From c8abbeaccc5bbcc5a1239c15298e453a90c76add Mon Sep 17 00:00:00 2001 From: Peter Jung Date: Sat, 3 Aug 2024 09:34:40 +0200 Subject: [PATCH 11/12] t2 Signed-off-by: Peter Jung --- .../ABI/testing/sysfs-driver-hid-appletb-kbd | 13 + Documentation/core-api/printk-formats.rst | 32 + MAINTAINERS | 12 + drivers/acpi/video_detect.c | 16 + drivers/firmware/efi/libstub/Makefile | 2 +- drivers/firmware/efi/libstub/arm64.c | 3 +- drivers/firmware/efi/libstub/efistub.h | 9 +- drivers/firmware/efi/libstub/smbios.c | 43 +- drivers/firmware/efi/libstub/x86-stub.c | 71 +- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 3 + drivers/gpu/drm/drm_format_helper.c | 54 + drivers/gpu/drm/i915/display/intel_ddi.c | 4 + drivers/gpu/drm/i915/display/intel_fbdev.c | 6 +- drivers/gpu/drm/i915/display/intel_quirks.c | 15 + drivers/gpu/drm/i915/display/intel_quirks.h | 1 + .../gpu/drm/tests/drm_format_helper_test.c | 81 ++ drivers/gpu/drm/tiny/Kconfig | 12 + drivers/gpu/drm/tiny/Makefile | 1 + drivers/gpu/drm/tiny/appletbdrm.c | 624 +++++++++ drivers/gpu/vga/vga_switcheroo.c | 7 +- drivers/hid/Kconfig | 22 + drivers/hid/Makefile | 2 + drivers/hid/hid-apple.c | 87 ++ drivers/hid/hid-appletb-bl.c | 193 +++ drivers/hid/hid-appletb-kbd.c | 289 +++++ drivers/hid/hid-core.c | 25 + drivers/hid/hid-google-hammer.c | 27 +- drivers/hid/hid-multitouch.c | 60 +- drivers/hid/hid-quirks.c | 8 +- drivers/hwmon/applesmc.c | 1138 ++++++++++++----- drivers/input/mouse/bcm5974.c | 138 ++ drivers/pci/vgaarb.c | 1 + drivers/platform/x86/apple-gmux.c | 18 + drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + drivers/staging/apple-bce/Kconfig | 18 + drivers/staging/apple-bce/Makefile | 28 + drivers/staging/apple-bce/apple_bce.c | 445 +++++++ drivers/staging/apple-bce/apple_bce.h | 38 + drivers/staging/apple-bce/audio/audio.c | 711 ++++++++++ drivers/staging/apple-bce/audio/audio.h | 125 ++ drivers/staging/apple-bce/audio/description.h | 42 + drivers/staging/apple-bce/audio/pcm.c | 308 +++++ drivers/staging/apple-bce/audio/pcm.h | 16 + drivers/staging/apple-bce/audio/protocol.c | 347 +++++ drivers/staging/apple-bce/audio/protocol.h | 147 +++ .../staging/apple-bce/audio/protocol_bce.c | 226 ++++ .../staging/apple-bce/audio/protocol_bce.h | 72 ++ drivers/staging/apple-bce/mailbox.c | 151 +++ drivers/staging/apple-bce/mailbox.h | 53 + drivers/staging/apple-bce/queue.c | 390 ++++++ drivers/staging/apple-bce/queue.h | 177 +++ drivers/staging/apple-bce/queue_dma.c | 220 ++++ drivers/staging/apple-bce/queue_dma.h | 50 + drivers/staging/apple-bce/vhci/command.h | 204 +++ drivers/staging/apple-bce/vhci/queue.c | 268 ++++ drivers/staging/apple-bce/vhci/queue.h | 76 ++ drivers/staging/apple-bce/vhci/transfer.c | 661 ++++++++++ drivers/staging/apple-bce/vhci/transfer.h | 73 ++ drivers/staging/apple-bce/vhci/vhci.c | 759 +++++++++++ drivers/staging/apple-bce/vhci/vhci.h | 52 + drivers/usb/core/driver.c | 14 + drivers/usb/storage/uas.c | 5 +- include/drm/drm_format_helper.h | 3 + include/linux/efi.h | 5 +- include/linux/hid.h | 2 + include/linux/usb.h | 3 + lib/test_printf.c | 20 +- lib/vsprintf.c | 36 +- scripts/checkpatch.pl | 2 +- 70 files changed, 8374 insertions(+), 393 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-driver-hid-appletb-kbd create mode 100644 drivers/gpu/drm/tiny/appletbdrm.c create mode 100644 drivers/hid/hid-appletb-bl.c create mode 100644 drivers/hid/hid-appletb-kbd.c create mode 100644 drivers/staging/apple-bce/Kconfig create mode 100644 drivers/staging/apple-bce/Makefile create mode 100644 drivers/staging/apple-bce/apple_bce.c create mode 100644 drivers/staging/apple-bce/apple_bce.h create mode 100644 drivers/staging/apple-bce/audio/audio.c create mode 100644 drivers/staging/apple-bce/audio/audio.h create mode 100644 drivers/staging/apple-bce/audio/description.h create mode 100644 drivers/staging/apple-bce/audio/pcm.c create mode 100644 drivers/staging/apple-bce/audio/pcm.h create mode 100644 drivers/staging/apple-bce/audio/protocol.c create mode 100644 drivers/staging/apple-bce/audio/protocol.h create mode 100644 drivers/staging/apple-bce/audio/protocol_bce.c create mode 100644 drivers/staging/apple-bce/audio/protocol_bce.h create mode 100644 drivers/staging/apple-bce/mailbox.c create mode 100644 drivers/staging/apple-bce/mailbox.h create mode 100644 drivers/staging/apple-bce/queue.c create mode 100644 drivers/staging/apple-bce/queue.h create mode 100644 drivers/staging/apple-bce/queue_dma.c create mode 100644 drivers/staging/apple-bce/queue_dma.h create mode 100644 drivers/staging/apple-bce/vhci/command.h create mode 100644 drivers/staging/apple-bce/vhci/queue.c create mode 100644 drivers/staging/apple-bce/vhci/queue.h create mode 100644 drivers/staging/apple-bce/vhci/transfer.c create mode 100644 drivers/staging/apple-bce/vhci/transfer.h create mode 100644 drivers/staging/apple-bce/vhci/vhci.c create mode 100644 drivers/staging/apple-bce/vhci/vhci.h diff --git a/Documentation/ABI/testing/sysfs-driver-hid-appletb-kbd b/Documentation/ABI/testing/sysfs-driver-hid-appletb-kbd new file mode 100644 index 000000000000..2a19584d091e --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-hid-appletb-kbd @@ -0,0 +1,13 @@ +What: /sys/bus/hid/drivers/hid-appletb-kbd//mode +Date: September, 2023 +KernelVersion: 6.5 +Contact: linux-input@vger.kernel.org +Description: + The set of keys displayed on the Touch Bar. + Valid values are: + == ================= + 0 Escape key only + 1 Function keys + 2 Media/brightness keys + 3 None + == ================= diff --git a/Documentation/core-api/printk-formats.rst b/Documentation/core-api/printk-formats.rst index 4451ef501936..c726a846f752 100644 --- a/Documentation/core-api/printk-formats.rst +++ b/Documentation/core-api/printk-formats.rst @@ -632,6 +632,38 @@ Examples:: %p4cc Y10 little-endian (0x20303159) %p4cc NV12 big-endian (0xb231564e) +Generic FourCC code +------------------- + +:: + %p4c[hnbl] gP00 (0x67503030) + +Print a generic FourCC code, as both ASCII characters and its numerical +value as hexadecimal. + +The additional ``h``, ``r``, ``b``, and ``l`` specifiers are used to specify +host, reversed, big or little endian order data respectively. Host endian +order means the data is interpreted as a 32-bit integer and the most +significant byte is printed first; that is, the character code as printed +matches the byte order stored in memory on big-endian systems, and is reversed +on little-endian systems. + +Passed by reference. + +Examples for a little-endian machine, given &(u32)0x67503030:: + + %p4ch gP00 (0x67503030) + %p4cl gP00 (0x67503030) + %p4cb 00Pg (0x30305067) + %p4cr 00Pg (0x30305067) + +Examples for a big-endian machine, given &(u32)0x67503030:: + + %p4ch gP00 (0x67503030) + %p4cl 00Pg (0x30305067) + %p4cb gP00 (0x67503030) + %p4cr 00Pg (0x30305067) + Rust ---- diff --git a/MAINTAINERS b/MAINTAINERS index 4112729fc23a..064156d69e75 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6728,6 +6728,12 @@ S: Supported T: git https://gitlab.freedesktop.org/drm/misc/kernel.git F: drivers/gpu/drm/sun4i/sun8i* +DRM DRIVER FOR APPLE TOUCH BARS +M: Kerem Karabay +L: dri-devel@lists.freedesktop.org +S: Maintained +F: drivers/gpu/drm/tiny/appletbdrm.c + DRM DRIVER FOR ARM PL111 CLCD S: Orphan T: git https://gitlab.freedesktop.org/drm/misc/kernel.git @@ -9733,6 +9739,12 @@ F: include/linux/pm.h F: include/linux/suspend.h F: kernel/power/ +HID APPLE TOUCH BAR DRIVERS +M: Kerem Karabay +L: linux-input@vger.kernel.org +S: Maintained +F: drivers/hid/hid-appletb-* + HID CORE LAYER M: Jiri Kosina M: Benjamin Tissoires diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 2cc3821b2b16..c11cbe5b6eaa 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -539,6 +539,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "iMac12,2"), }, }, + { + .callback = video_detect_force_native, + /* Apple MacBook Air 9,1 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir9,1"), + }, + }, { /* https://bugzilla.redhat.com/show_bug.cgi?id=1217249 */ .callback = video_detect_force_native, @@ -548,6 +556,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro12,1"), }, }, + { + .callback = video_detect_force_native, + /* Apple MacBook Pro 16,2 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,2"), + }, + }, { .callback = video_detect_force_native, /* Dell Inspiron N4010 */ diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile index 06f0428a723c..1f32d6cf98d6 100644 --- a/drivers/firmware/efi/libstub/Makefile +++ b/drivers/firmware/efi/libstub/Makefile @@ -76,7 +76,7 @@ lib-$(CONFIG_EFI_GENERIC_STUB) += efi-stub.o string.o intrinsics.o systable.o \ lib-$(CONFIG_ARM) += arm32-stub.o lib-$(CONFIG_ARM64) += kaslr.o arm64.o arm64-stub.o smbios.o -lib-$(CONFIG_X86) += x86-stub.o +lib-$(CONFIG_X86) += x86-stub.o smbios.o lib-$(CONFIG_X86_64) += x86-5lvl.o lib-$(CONFIG_RISCV) += kaslr.o riscv.o riscv-stub.o lib-$(CONFIG_LOONGARCH) += loongarch.o loongarch-stub.o diff --git a/drivers/firmware/efi/libstub/arm64.c b/drivers/firmware/efi/libstub/arm64.c index 446e35eaf3d9..e57cd3de0a00 100644 --- a/drivers/firmware/efi/libstub/arm64.c +++ b/drivers/firmware/efi/libstub/arm64.c @@ -39,8 +39,7 @@ static bool system_needs_vamap(void) static char const emag[] = "eMAG"; default: - version = efi_get_smbios_string(&record->header, 4, - processor_version); + version = efi_get_smbios_string(record, processor_version); if (!version || (strncmp(version, altra, sizeof(altra) - 1) && strncmp(version, emag, sizeof(emag) - 1))) break; diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h index 27abb4ce0291..d33ccbc4a2c6 100644 --- a/drivers/firmware/efi/libstub/efistub.h +++ b/drivers/firmware/efi/libstub/efistub.h @@ -1204,14 +1204,13 @@ struct efi_smbios_type4_record { u16 thread_enabled; }; -#define efi_get_smbios_string(__record, __type, __name) ({ \ - int off = offsetof(struct efi_smbios_type ## __type ## _record, \ - __name); \ - __efi_get_smbios_string((__record), __type, off); \ +#define efi_get_smbios_string(__record, __field) ({ \ + __typeof__(__record) __rec = __record; \ + __efi_get_smbios_string(&__rec->header, &__rec->__field); \ }) const u8 *__efi_get_smbios_string(const struct efi_smbios_record *record, - u8 type, int offset); + const u8 *offset); void efi_remap_image(unsigned long image_base, unsigned alloc_size, unsigned long code_size); diff --git a/drivers/firmware/efi/libstub/smbios.c b/drivers/firmware/efi/libstub/smbios.c index c217de2cc8d5..f31410d7e7e1 100644 --- a/drivers/firmware/efi/libstub/smbios.c +++ b/drivers/firmware/efi/libstub/smbios.c @@ -6,20 +6,31 @@ #include "efistub.h" -typedef struct efi_smbios_protocol efi_smbios_protocol_t; - -struct efi_smbios_protocol { - efi_status_t (__efiapi *add)(efi_smbios_protocol_t *, efi_handle_t, - u16 *, struct efi_smbios_record *); - efi_status_t (__efiapi *update_string)(efi_smbios_protocol_t *, u16 *, - unsigned long *, u8 *); - efi_status_t (__efiapi *remove)(efi_smbios_protocol_t *, u16); - efi_status_t (__efiapi *get_next)(efi_smbios_protocol_t *, u16 *, u8 *, - struct efi_smbios_record **, - efi_handle_t *); - - u8 major_version; - u8 minor_version; +typedef union efi_smbios_protocol efi_smbios_protocol_t; + +union efi_smbios_protocol { + struct { + efi_status_t (__efiapi *add)(efi_smbios_protocol_t *, efi_handle_t, + u16 *, struct efi_smbios_record *); + efi_status_t (__efiapi *update_string)(efi_smbios_protocol_t *, u16 *, + unsigned long *, u8 *); + efi_status_t (__efiapi *remove)(efi_smbios_protocol_t *, u16); + efi_status_t (__efiapi *get_next)(efi_smbios_protocol_t *, u16 *, u8 *, + struct efi_smbios_record **, + efi_handle_t *); + + u8 major_version; + u8 minor_version; + }; + struct { + u32 add; + u32 update_string; + u32 remove; + u32 get_next; + + u8 major_version; + u8 minor_version; + } mixed_mode; }; const struct efi_smbios_record *efi_get_smbios_record(u8 type) @@ -38,7 +49,7 @@ const struct efi_smbios_record *efi_get_smbios_record(u8 type) } const u8 *__efi_get_smbios_string(const struct efi_smbios_record *record, - u8 type, int offset) + const u8 *offset) { const u8 *strtable; @@ -46,7 +57,7 @@ const u8 *__efi_get_smbios_string(const struct efi_smbios_record *record, return NULL; strtable = (u8 *)record + record->length; - for (int i = 1; i < ((u8 *)record)[offset]; i++) { + for (int i = 1; i < *offset; i++) { int len = strlen(strtable); if (!len) diff --git a/drivers/firmware/efi/libstub/x86-stub.c b/drivers/firmware/efi/libstub/x86-stub.c index 99d39eda5134..0a2342c0bc16 100644 --- a/drivers/firmware/efi/libstub/x86-stub.c +++ b/drivers/firmware/efi/libstub/x86-stub.c @@ -225,6 +225,68 @@ static void retrieve_apple_device_properties(struct boot_params *boot_params) } } +static bool apple_match_product_name(void) +{ + static const char type1_product_matches[][15] = { + "MacBookPro11,3", + "MacBookPro11,5", + "MacBookPro13,3", + "MacBookPro14,3", + "MacBookPro15,1", + "MacBookPro15,3", + "MacBookPro16,1", + "MacBookPro16,4", + }; + const struct efi_smbios_type1_record *record; + const u8 *product; + + record = (struct efi_smbios_type1_record *)efi_get_smbios_record(1); + if (!record) + return false; + + product = efi_get_smbios_string(record, product_name); + if (!product) + return false; + + for (int i = 0; i < ARRAY_SIZE(type1_product_matches); i++) { + if (!strcmp(product, type1_product_matches[i])) + return true; + } + + return false; +} + +static void apple_set_os(void) +{ + struct { + unsigned long version; + efi_status_t (__efiapi *set_os_version)(const char *); + efi_status_t (__efiapi *set_os_vendor)(const char *); + } *set_os; + efi_status_t status; + + if (!efi_is_64bit() || !apple_match_product_name()) + return; + + status = efi_bs_call(locate_protocol, &APPLE_SET_OS_PROTOCOL_GUID, NULL, + (void **)&set_os); + if (status != EFI_SUCCESS) + return; + + if (set_os->version >= 2) { + status = set_os->set_os_vendor("Apple Inc."); + if (status != EFI_SUCCESS) + efi_err("Failed to set OS vendor via apple_set_os\n"); + } + + if (set_os->version > 0) { + /* The version being set doesn't seem to matter */ + status = set_os->set_os_version("Mac OS X 10.9"); + if (status != EFI_SUCCESS) + efi_err("Failed to set OS version via apple_set_os\n"); + } +} + efi_status_t efi_adjust_memory_range_protection(unsigned long start, unsigned long size) { @@ -335,9 +397,12 @@ static const efi_char16_t apple[] = L"Apple"; static void setup_quirks(struct boot_params *boot_params) { - if (IS_ENABLED(CONFIG_APPLE_PROPERTIES) && - !memcmp(efistub_fw_vendor(), apple, sizeof(apple))) - retrieve_apple_device_properties(boot_params); + if (!memcmp(efistub_fw_vendor(), apple, sizeof(apple))) { + if (IS_ENABLED(CONFIG_APPLE_PROPERTIES)) + retrieve_apple_device_properties(boot_params); + + apple_set_os(); + } } /* diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index bb0b636d0d75..a05ed98da785 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -2211,6 +2211,9 @@ static int amdgpu_pci_probe(struct pci_dev *pdev, int ret, retry = 0, i; bool supports_atomic = false; + if (vga_switcheroo_client_probe_defer(pdev)) + return -EPROBE_DEFER; + /* skip devices which are owned by radeon */ for (i = 0; i < ARRAY_SIZE(amdgpu_unsupported_pciidlist); i++) { if (amdgpu_unsupported_pciidlist[i] == pdev->device) diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c index b1be458ed4dd..28c0e76a1e88 100644 --- a/drivers/gpu/drm/drm_format_helper.c +++ b/drivers/gpu/drm/drm_format_helper.c @@ -702,6 +702,57 @@ void drm_fb_xrgb8888_to_rgb888(struct iosys_map *dst, const unsigned int *dst_pi } EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb888); +static void drm_fb_xrgb8888_to_bgr888_line(void *dbuf, const void *sbuf, unsigned int pixels) +{ + u8 *dbuf8 = dbuf; + const __le32 *sbuf32 = sbuf; + unsigned int x; + u32 pix; + + for (x = 0; x < pixels; x++) { + pix = le32_to_cpu(sbuf32[x]); + /* write red-green-blue to output in little endianness */ + *dbuf8++ = (pix & 0x00FF0000) >> 16; + *dbuf8++ = (pix & 0x0000FF00) >> 8; + *dbuf8++ = (pix & 0x000000FF) >> 0; + } +} + +/** + * drm_fb_xrgb8888_to_bgr888 - Convert XRGB8888 to BGR888 clip buffer + * @dst: Array of BGR888 destination buffers + * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines + * within @dst; can be NULL if scanlines are stored next to each other. + * @src: Array of XRGB8888 source buffers + * @fb: DRM framebuffer + * @clip: Clip rectangle area to copy + * @state: Transform and conversion state + * + * This function copies parts of a framebuffer to display memory and converts the + * color format during the process. Destination and framebuffer formats must match. The + * parameters @dst, @dst_pitch and @src refer to arrays. Each array must have at + * least as many entries as there are planes in @fb's format. Each entry stores the + * value for the format's respective color plane at the same index. + * + * This function does not apply clipping on @dst (i.e. the destination is at the + * top-left corner). + * + * Drivers can use this function for BGR888 devices that don't natively + * support XRGB8888. + */ +void drm_fb_xrgb8888_to_bgr888(struct iosys_map *dst, const unsigned int *dst_pitch, + const struct iosys_map *src, const struct drm_framebuffer *fb, + const struct drm_rect *clip, struct drm_format_conv_state *state) +{ + static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { + 3, + }; + + drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, + drm_fb_xrgb8888_to_bgr888_line); +} +EXPORT_SYMBOL(drm_fb_xrgb8888_to_bgr888); + static void drm_fb_xrgb8888_to_argb8888_line(void *dbuf, const void *sbuf, unsigned int pixels) { __le32 *dbuf32 = dbuf; @@ -1035,6 +1086,9 @@ int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t d } else if (dst_format == DRM_FORMAT_RGB888) { drm_fb_xrgb8888_to_rgb888(dst, dst_pitch, src, fb, clip, state); return 0; + } else if (dst_format == DRM_FORMAT_BGR888) { + drm_fb_xrgb8888_to_bgr888(dst, dst_pitch, src, fb, clip, state); + return 0; } else if (dst_format == DRM_FORMAT_ARGB8888) { drm_fb_xrgb8888_to_argb8888(dst, dst_pitch, src, fb, clip, state); return 0; diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 6bff169fa8d4..8d80ae00b838 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -4648,6 +4648,7 @@ intel_ddi_init_hdmi_connector(struct intel_digital_port *dig_port) static bool intel_ddi_a_force_4_lanes(struct intel_digital_port *dig_port) { + struct intel_display *display = to_intel_display(dig_port); struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); if (dig_port->base.port != PORT_A) @@ -4656,6 +4657,9 @@ static bool intel_ddi_a_force_4_lanes(struct intel_digital_port *dig_port) if (dig_port->saved_port_bits & DDI_A_4_LANES) return false; + if (intel_has_quirk(display, QUIRK_DDI_A_FORCE_4_LANES)) + return true; + /* Broxton/Geminilake: Bspec says that DDI_A_4_LANES is the only * supported configuration */ diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c index bda702c2cab8..1647e141ae78 100644 --- a/drivers/gpu/drm/i915/display/intel_fbdev.c +++ b/drivers/gpu/drm/i915/display/intel_fbdev.c @@ -196,10 +196,10 @@ static int intelfb_create(struct drm_fb_helper *helper, return ret; if (intel_fb && - (sizes->fb_width > intel_fb->base.width || - sizes->fb_height > intel_fb->base.height)) { + (sizes->fb_width != intel_fb->base.width || + sizes->fb_height != intel_fb->base.height)) { drm_dbg_kms(&dev_priv->drm, - "BIOS fb too small (%dx%d), we require (%dx%d)," + "BIOS fb not valid (%dx%d), we require (%dx%d)," " releasing it\n", intel_fb->base.width, intel_fb->base.height, sizes->fb_width, sizes->fb_height); diff --git a/drivers/gpu/drm/i915/display/intel_quirks.c b/drivers/gpu/drm/i915/display/intel_quirks.c index 14d5fefc9c5b..727639b8f6a6 100644 --- a/drivers/gpu/drm/i915/display/intel_quirks.c +++ b/drivers/gpu/drm/i915/display/intel_quirks.c @@ -59,6 +59,18 @@ static void quirk_increase_ddi_disabled_time(struct intel_display *display) drm_info(display->drm, "Applying Increase DDI Disabled quirk\n"); } +/* + * In some cases, the firmware might not set the lane count to 4 (for example, + * when booting in some dual GPU Macs with the dGPU as the default GPU), this + * quirk is used to force it as otherwise it might not be possible to compute a + * valid link configuration. + */ +static void quirk_ddi_a_force_4_lanes(struct intel_display *display) +{ + intel_set_quirk(display, QUIRK_DDI_A_FORCE_4_LANES); + drm_info(display->drm, "Applying DDI A Forced 4 Lanes quirk\n"); +} + static void quirk_no_pps_backlight_power_hook(struct intel_display *display) { intel_set_quirk(display, QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK); @@ -201,6 +213,9 @@ static struct intel_quirk intel_quirks[] = { { 0x3184, 0x1019, 0xa94d, quirk_increase_ddi_disabled_time }, /* HP Notebook - 14-r206nv */ { 0x0f31, 0x103c, 0x220f, quirk_invert_brightness }, + + /* Apple MacBookPro15,1 */ + { 0x3e9b, 0x106b, 0x0176, quirk_ddi_a_force_4_lanes }, }; void intel_init_quirks(struct intel_display *display) diff --git a/drivers/gpu/drm/i915/display/intel_quirks.h b/drivers/gpu/drm/i915/display/intel_quirks.h index 151c8f4ae576..46e7feba88f4 100644 --- a/drivers/gpu/drm/i915/display/intel_quirks.h +++ b/drivers/gpu/drm/i915/display/intel_quirks.h @@ -17,6 +17,7 @@ enum intel_quirk_id { QUIRK_INVERT_BRIGHTNESS, QUIRK_LVDS_SSC_DISABLE, QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK, + QUIRK_DDI_A_FORCE_4_LANES, }; void intel_init_quirks(struct intel_display *display); diff --git a/drivers/gpu/drm/tests/drm_format_helper_test.c b/drivers/gpu/drm/tests/drm_format_helper_test.c index 08992636ec05..35cd3405d045 100644 --- a/drivers/gpu/drm/tests/drm_format_helper_test.c +++ b/drivers/gpu/drm/tests/drm_format_helper_test.c @@ -60,6 +60,11 @@ struct convert_to_rgb888_result { const u8 expected[TEST_BUF_SIZE]; }; +struct convert_to_bgr888_result { + unsigned int dst_pitch; + const u8 expected[TEST_BUF_SIZE]; +}; + struct convert_to_argb8888_result { unsigned int dst_pitch; const u32 expected[TEST_BUF_SIZE]; @@ -107,6 +112,7 @@ struct convert_xrgb8888_case { struct convert_to_argb1555_result argb1555_result; struct convert_to_rgba5551_result rgba5551_result; struct convert_to_rgb888_result rgb888_result; + struct convert_to_bgr888_result bgr888_result; struct convert_to_argb8888_result argb8888_result; struct convert_to_xrgb2101010_result xrgb2101010_result; struct convert_to_argb2101010_result argb2101010_result; @@ -151,6 +157,10 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = { .dst_pitch = TEST_USE_DEFAULT_PITCH, .expected = { 0x00, 0x00, 0xFF }, }, + .bgr888_result = { + .dst_pitch = TEST_USE_DEFAULT_PITCH, + .expected = { 0xFF, 0x00, 0x00 }, + }, .argb8888_result = { .dst_pitch = TEST_USE_DEFAULT_PITCH, .expected = { 0xFFFF0000 }, @@ -217,6 +227,10 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = { .dst_pitch = TEST_USE_DEFAULT_PITCH, .expected = { 0x00, 0x00, 0xFF }, }, + .bgr888_result = { + .dst_pitch = TEST_USE_DEFAULT_PITCH, + .expected = { 0xFF, 0x00, 0x00 }, + }, .argb8888_result = { .dst_pitch = TEST_USE_DEFAULT_PITCH, .expected = { 0xFFFF0000 }, @@ -330,6 +344,15 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = { 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, }, }, + .bgr888_result = { + .dst_pitch = TEST_USE_DEFAULT_PITCH, + .expected = { + 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, + 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, + 0x00, 0x00, 0xFF, 0xFF, 0x00, 0xFF, + 0xFF, 0xFF, 0x00, 0x00, 0xFF, 0xFF, + }, + }, .argb8888_result = { .dst_pitch = TEST_USE_DEFAULT_PITCH, .expected = { @@ -468,6 +491,17 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }, }, + .bgr888_result = { + .dst_pitch = 15, + .expected = { + 0x0E, 0x44, 0x9C, 0x11, 0x4D, 0x05, 0xA8, 0xF3, 0x03, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x6C, 0xF0, 0x73, 0x0E, 0x44, 0x9C, 0x11, 0x4D, 0x05, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0xA8, 0x03, 0x03, 0x6C, 0xF0, 0x73, 0x0E, 0x44, 0x9C, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + }, + }, .argb8888_result = { .dst_pitch = 20, .expected = { @@ -914,6 +948,52 @@ static void drm_test_fb_xrgb8888_to_rgb888(struct kunit *test) KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size); } +static void drm_test_fb_xrgb8888_to_bgr888(struct kunit *test) +{ + const struct convert_xrgb8888_case *params = test->param_value; + const struct convert_to_bgr888_result *result = ¶ms->bgr888_result; + size_t dst_size; + u8 *buf = NULL; + __le32 *xrgb8888 = NULL; + struct iosys_map dst, src; + + struct drm_framebuffer fb = { + .format = drm_format_info(DRM_FORMAT_XRGB8888), + .pitches = { params->pitch, 0, 0 }, + }; + + dst_size = conversion_buf_size(DRM_FORMAT_BGR888, result->dst_pitch, + ¶ms->clip, 0); + KUNIT_ASSERT_GT(test, dst_size, 0); + + buf = kunit_kzalloc(test, dst_size, GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf); + iosys_map_set_vaddr(&dst, buf); + + xrgb8888 = cpubuf_to_le32(test, params->xrgb8888, TEST_BUF_SIZE); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, xrgb8888); + iosys_map_set_vaddr(&src, xrgb8888); + + /* + * BGR888 expected results are already in little-endian + * order, so there's no need to convert the test output. + */ + drm_fb_xrgb8888_to_bgr888(&dst, &result->dst_pitch, &src, &fb, ¶ms->clip, + &fmtcnv_state); + KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size); + + buf = dst.vaddr; /* restore original value of buf */ + memset(buf, 0, dst_size); + + int blit_result = 0; + + blit_result = drm_fb_blit(&dst, &result->dst_pitch, DRM_FORMAT_BGR888, &src, &fb, ¶ms->clip, + &fmtcnv_state); + + KUNIT_EXPECT_FALSE(test, blit_result); + KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size); +} + static void drm_test_fb_xrgb8888_to_argb8888(struct kunit *test) { const struct convert_xrgb8888_case *params = test->param_value; @@ -1851,6 +1931,7 @@ static struct kunit_case drm_format_helper_test_cases[] = { KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_argb1555, convert_xrgb8888_gen_params), KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_rgba5551, convert_xrgb8888_gen_params), KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_rgb888, convert_xrgb8888_gen_params), + KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_bgr888, convert_xrgb8888_gen_params), KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_argb8888, convert_xrgb8888_gen_params), KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_xrgb2101010, convert_xrgb8888_gen_params), KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_argb2101010, convert_xrgb8888_gen_params), diff --git a/drivers/gpu/drm/tiny/Kconfig b/drivers/gpu/drm/tiny/Kconfig index f6889f649bc1..559a97bce12c 100644 --- a/drivers/gpu/drm/tiny/Kconfig +++ b/drivers/gpu/drm/tiny/Kconfig @@ -1,5 +1,17 @@ # SPDX-License-Identifier: GPL-2.0-only +config DRM_APPLETBDRM + tristate "DRM support for Apple Touch Bars" + depends on DRM && USB && MMU + select DRM_KMS_HELPER + select DRM_GEM_SHMEM_HELPER + help + Say Y here if you want support for the display of Touch Bars on x86 + MacBook Pros. + + To compile this driver as a module, choose M here: the + module will be called appletbdrm. + config DRM_ARCPGU tristate "ARC PGU" depends on DRM && OF diff --git a/drivers/gpu/drm/tiny/Makefile b/drivers/gpu/drm/tiny/Makefile index 76dde89a044b..9a1b412e764a 100644 --- a/drivers/gpu/drm/tiny/Makefile +++ b/drivers/gpu/drm/tiny/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-only +obj-$(CONFIG_DRM_APPLETBDRM) += appletbdrm.o obj-$(CONFIG_DRM_ARCPGU) += arcpgu.o obj-$(CONFIG_DRM_BOCHS) += bochs.o obj-$(CONFIG_DRM_CIRRUS_QEMU) += cirrus.o diff --git a/drivers/gpu/drm/tiny/appletbdrm.c b/drivers/gpu/drm/tiny/appletbdrm.c new file mode 100644 index 000000000000..b9440ce0064e --- /dev/null +++ b/drivers/gpu/drm/tiny/appletbdrm.c @@ -0,0 +1,624 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Apple Touch Bar DRM Driver + * + * Copyright (c) 2023 Kerem Karabay + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include + +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define _APPLETBDRM_FOURCC(s) (((s)[0] << 24) | ((s)[1] << 16) | ((s)[2] << 8) | (s)[3]) +#define APPLETBDRM_FOURCC(s) _APPLETBDRM_FOURCC(#s) + +#define APPLETBDRM_PIXEL_FORMAT APPLETBDRM_FOURCC(RGBA) /* The actual format is BGR888 */ +#define APPLETBDRM_BITS_PER_PIXEL 24 + +#define APPLETBDRM_MSG_CLEAR_DISPLAY APPLETBDRM_FOURCC(CLRD) +#define APPLETBDRM_MSG_GET_INFORMATION APPLETBDRM_FOURCC(GINF) +#define APPLETBDRM_MSG_UPDATE_COMPLETE APPLETBDRM_FOURCC(UDCL) +#define APPLETBDRM_MSG_SIGNAL_READINESS APPLETBDRM_FOURCC(REDY) + +#define APPLETBDRM_BULK_MSG_TIMEOUT 1000 + +#define drm_to_adev(_drm) container_of(_drm, struct appletbdrm_device, drm) +#define adev_to_udev(adev) interface_to_usbdev(to_usb_interface(adev->dev)) + +struct appletbdrm_device { + struct device *dev; + + u8 in_ep; + u8 out_ep; + + u32 width; + u32 height; + + struct drm_device drm; + struct drm_display_mode mode; + struct drm_connector connector; + struct drm_simple_display_pipe pipe; + + bool readiness_signal_received; +}; + +struct appletbdrm_request_header { + __le16 unk_00; + __le16 unk_02; + __le32 unk_04; + __le32 unk_08; + __le32 size; +} __packed; + +struct appletbdrm_response_header { + u8 unk_00[16]; + u32 msg; +} __packed; + +struct appletbdrm_simple_request { + struct appletbdrm_request_header header; + u32 msg; + u8 unk_14[8]; + __le32 size; +} __packed; + +struct appletbdrm_information { + struct appletbdrm_response_header header; + u8 unk_14[12]; + __le32 width; + __le32 height; + u8 bits_per_pixel; + __le32 bytes_per_row; + __le32 orientation; + __le32 bitmap_info; + u32 pixel_format; + __le32 width_inches; /* floating point */ + __le32 height_inches; /* floating point */ +} __packed; + +struct appletbdrm_frame { + __le16 begin_x; + __le16 begin_y; + __le16 width; + __le16 height; + __le32 buf_size; + u8 buf[]; +} __packed; + +struct appletbdrm_fb_request_footer { + u8 unk_00[12]; + __le32 unk_0c; + u8 unk_10[12]; + __le32 unk_1c; + __le64 timestamp; + u8 unk_28[12]; + __le32 unk_34; + u8 unk_38[20]; + __le32 unk_4c; +} __packed; + +struct appletbdrm_fb_request { + struct appletbdrm_request_header header; + __le16 unk_10; + u8 msg_id; + u8 unk_13[29]; + /* + * Contents of `data`: + * - struct appletbdrm_frame frames[]; + * - struct appletbdrm_fb_request_footer footer; + * - padding to make the total size a multiple of 16 + */ + u8 data[]; +} __packed; + +struct appletbdrm_fb_request_response { + struct appletbdrm_response_header header; + u8 unk_14[12]; + __le64 timestamp; +} __packed; + +static int appletbdrm_send_request(struct appletbdrm_device *adev, + struct appletbdrm_request_header *request, size_t size) +{ + struct usb_device *udev = adev_to_udev(adev); + struct drm_device *drm = &adev->drm; + int ret, actual_size; + + ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, adev->out_ep), + request, size, &actual_size, APPLETBDRM_BULK_MSG_TIMEOUT); + if (ret) { + drm_err(drm, "Failed to send message (%pe)\n", ERR_PTR(ret)); + return ret; + } + + if (actual_size != size) { + drm_err(drm, "Actual size (%d) doesn't match expected size (%lu)\n", + actual_size, size); + return -EIO; + } + + return ret; +} + +static int appletbdrm_read_response(struct appletbdrm_device *adev, + struct appletbdrm_response_header *response, + size_t size, u32 expected_response) +{ + struct usb_device *udev = adev_to_udev(adev); + struct drm_device *drm = &adev->drm; + int ret, actual_size; + +retry: + ret = usb_bulk_msg(udev, usb_rcvbulkpipe(udev, adev->in_ep), + response, size, &actual_size, APPLETBDRM_BULK_MSG_TIMEOUT); + if (ret) { + drm_err(drm, "Failed to read response (%pe)\n", ERR_PTR(ret)); + return ret; + } + + /* + * The device responds to the first request sent in a particular + * timeframe after the USB device configuration is set with a readiness + * signal, in which case the response should be read again + */ + if (response->msg == APPLETBDRM_MSG_SIGNAL_READINESS) { + if (!adev->readiness_signal_received) { + adev->readiness_signal_received = true; + goto retry; + } + + drm_err(drm, "Encountered unexpected readiness signal\n"); + return -EIO; + } + + if (actual_size != size) { + drm_err(drm, "Actual size (%d) doesn't match expected size (%lu)\n", + actual_size, size); + return -EIO; + } + + if (response->msg != expected_response) { + drm_err(drm, "Unexpected response from device (expected %p4ch found %p4ch)\n", + &expected_response, &response->msg); + return -EIO; + } + + return 0; +} + +static int appletbdrm_send_msg(struct appletbdrm_device *adev, u32 msg) +{ + struct appletbdrm_simple_request *request; + int ret; + + request = kzalloc(sizeof(*request), GFP_KERNEL); + if (!request) + return -ENOMEM; + + request->header.unk_00 = cpu_to_le16(2); + request->header.unk_02 = cpu_to_le16(0x1512); + request->header.size = cpu_to_le32(sizeof(*request) - sizeof(request->header)); + request->msg = msg; + request->size = request->header.size; + + ret = appletbdrm_send_request(adev, &request->header, sizeof(*request)); + + kfree(request); + + return ret; +} + +static int appletbdrm_clear_display(struct appletbdrm_device *adev) +{ + return appletbdrm_send_msg(adev, APPLETBDRM_MSG_CLEAR_DISPLAY); +} + +static int appletbdrm_signal_readiness(struct appletbdrm_device *adev) +{ + return appletbdrm_send_msg(adev, APPLETBDRM_MSG_SIGNAL_READINESS); +} + +static int appletbdrm_get_information(struct appletbdrm_device *adev) +{ + struct appletbdrm_information *info; + struct drm_device *drm = &adev->drm; + u8 bits_per_pixel; + u32 pixel_format; + int ret; + + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + ret = appletbdrm_send_msg(adev, APPLETBDRM_MSG_GET_INFORMATION); + if (ret) + return ret; + + ret = appletbdrm_read_response(adev, &info->header, sizeof(*info), + APPLETBDRM_MSG_GET_INFORMATION); + if (ret) + goto free_info; + + bits_per_pixel = info->bits_per_pixel; + pixel_format = get_unaligned(&info->pixel_format); + + adev->width = get_unaligned_le32(&info->width); + adev->height = get_unaligned_le32(&info->height); + + if (bits_per_pixel != APPLETBDRM_BITS_PER_PIXEL) { + drm_err(drm, "Encountered unexpected bits per pixel value (%d)\n", bits_per_pixel); + ret = -EINVAL; + goto free_info; + } + + if (pixel_format != APPLETBDRM_PIXEL_FORMAT) { + drm_err(drm, "Encountered unknown pixel format (%p4ch)\n", &pixel_format); + ret = -EINVAL; + goto free_info; + } + +free_info: + kfree(info); + + return ret; +} + +static u32 rect_size(struct drm_rect *rect) +{ + return drm_rect_width(rect) * drm_rect_height(rect) * (APPLETBDRM_BITS_PER_PIXEL / 8); +} + +static int appletbdrm_flush_damage(struct appletbdrm_device *adev, + struct drm_plane_state *old_state, + struct drm_plane_state *state) +{ + struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(state); + struct appletbdrm_fb_request_response *response; + struct appletbdrm_fb_request_footer *footer; + struct drm_atomic_helper_damage_iter iter; + struct drm_framebuffer *fb = state->fb; + struct appletbdrm_fb_request *request; + struct drm_device *drm = &adev->drm; + struct appletbdrm_frame *frame; + u64 timestamp = ktime_get_ns(); + struct drm_rect damage; + size_t frames_size = 0; + size_t request_size; + int ret; + + drm_atomic_helper_damage_iter_init(&iter, old_state, state); + drm_atomic_for_each_plane_damage(&iter, &damage) { + frames_size += struct_size(frame, buf, rect_size(&damage)); + } + + if (!frames_size) + return 0; + + request_size = ALIGN(sizeof(*request) + frames_size + sizeof(*footer), 16); + + request = kzalloc(request_size, GFP_KERNEL); + if (!request) + return -ENOMEM; + + response = kzalloc(sizeof(*response), GFP_KERNEL); + if (!response) { + ret = -ENOMEM; + goto free_request; + } + + ret = drm_gem_fb_begin_cpu_access(fb, DMA_FROM_DEVICE); + if (ret) { + drm_err(drm, "Failed to start CPU framebuffer access (%pe)\n", ERR_PTR(ret)); + goto free_response; + } + + request->header.unk_00 = cpu_to_le16(2); + request->header.unk_02 = cpu_to_le16(0x12); + request->header.unk_04 = cpu_to_le32(9); + request->header.size = cpu_to_le32(request_size - sizeof(request->header)); + request->unk_10 = cpu_to_le16(1); + request->msg_id = timestamp & 0xff; + + frame = (struct appletbdrm_frame *)request->data; + + drm_atomic_helper_damage_iter_init(&iter, old_state, state); + drm_atomic_for_each_plane_damage(&iter, &damage) { + struct iosys_map dst = IOSYS_MAP_INIT_VADDR(frame->buf); + u32 buf_size = rect_size(&damage); + + /* + * The coordinates need to be translated to the coordinate + * system the device expects, see the comment in + * appletbdrm_setup_mode_config + */ + frame->begin_x = cpu_to_le16(damage.y1); + frame->begin_y = cpu_to_le16(adev->height - damage.x2); + frame->width = cpu_to_le16(drm_rect_height(&damage)); + frame->height = cpu_to_le16(drm_rect_width(&damage)); + frame->buf_size = cpu_to_le32(buf_size); + + ret = drm_fb_blit(&dst, NULL, DRM_FORMAT_BGR888, + &shadow_plane_state->data[0], fb, &damage, &shadow_plane_state->fmtcnv_state); + if (ret) { + drm_err(drm, "Failed to copy damage clip (%pe)\n", ERR_PTR(ret)); + goto end_fb_cpu_access; + } + + frame = (void *)frame + struct_size(frame, buf, buf_size); + } + + footer = (struct appletbdrm_fb_request_footer *)&request->data[frames_size]; + + footer->unk_0c = cpu_to_le32(0xfffe); + footer->unk_1c = cpu_to_le32(0x80001); + footer->unk_34 = cpu_to_le32(0x80002); + footer->unk_4c = cpu_to_le32(0xffff); + footer->timestamp = cpu_to_le64(timestamp); + + ret = appletbdrm_send_request(adev, &request->header, request_size); + if (ret) + goto end_fb_cpu_access; + + ret = appletbdrm_read_response(adev, &response->header, sizeof(*response), + APPLETBDRM_MSG_UPDATE_COMPLETE); + if (ret) + goto end_fb_cpu_access; + + if (response->timestamp != footer->timestamp) { + drm_err(drm, "Response timestamp (%llu) doesn't match request timestamp (%llu)\n", + le64_to_cpu(response->timestamp), timestamp); + goto end_fb_cpu_access; + } + +end_fb_cpu_access: + drm_gem_fb_end_cpu_access(fb, DMA_FROM_DEVICE); +free_response: + kfree(response); +free_request: + kfree(request); + + return ret; +} + +static int appletbdrm_connector_helper_get_modes(struct drm_connector *connector) +{ + struct appletbdrm_device *adev = drm_to_adev(connector->dev); + + return drm_connector_helper_get_modes_fixed(connector, &adev->mode); +} + +static enum drm_mode_status appletbdrm_pipe_mode_valid(struct drm_simple_display_pipe *pipe, + const struct drm_display_mode *mode) +{ + struct drm_crtc *crtc = &pipe->crtc; + struct appletbdrm_device *adev = drm_to_adev(crtc->dev); + + return drm_crtc_helper_mode_valid_fixed(crtc, mode, &adev->mode); +} + +static void appletbdrm_pipe_disable(struct drm_simple_display_pipe *pipe) +{ + struct appletbdrm_device *adev = drm_to_adev(pipe->crtc.dev); + int idx; + + if (!drm_dev_enter(&adev->drm, &idx)) + return; + + appletbdrm_clear_display(adev); + + drm_dev_exit(idx); +} + +static void appletbdrm_pipe_update(struct drm_simple_display_pipe *pipe, + struct drm_plane_state *old_state) +{ + struct drm_crtc *crtc = &pipe->crtc; + struct appletbdrm_device *adev = drm_to_adev(crtc->dev); + int idx; + + if (!crtc->state->active || !drm_dev_enter(&adev->drm, &idx)) + return; + + appletbdrm_flush_damage(adev, old_state, pipe->plane.state); + + drm_dev_exit(idx); +} + +static const u32 appletbdrm_formats[] = { + DRM_FORMAT_BGR888, + DRM_FORMAT_XRGB8888, /* emulated */ +}; + +static const struct drm_mode_config_funcs appletbdrm_mode_config_funcs = { + .fb_create = drm_gem_fb_create_with_dirty, + .atomic_check = drm_atomic_helper_check, + .atomic_commit = drm_atomic_helper_commit, +}; + +static const struct drm_connector_funcs appletbdrm_connector_funcs = { + .reset = drm_atomic_helper_connector_reset, + .destroy = drm_connector_cleanup, + .fill_modes = drm_helper_probe_single_connector_modes, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, +}; + +static const struct drm_connector_helper_funcs appletbdrm_connector_helper_funcs = { + .get_modes = appletbdrm_connector_helper_get_modes, +}; + +static const struct drm_simple_display_pipe_funcs appletbdrm_pipe_funcs = { + DRM_GEM_SIMPLE_DISPLAY_PIPE_SHADOW_PLANE_FUNCS, + .update = appletbdrm_pipe_update, + .disable = appletbdrm_pipe_disable, + .mode_valid = appletbdrm_pipe_mode_valid, +}; + +DEFINE_DRM_GEM_FOPS(appletbdrm_drm_fops); + +static const struct drm_driver appletbdrm_drm_driver = { + DRM_GEM_SHMEM_DRIVER_OPS, + .name = "appletbdrm", + .desc = "Apple Touch Bar DRM Driver", + .date = "20230910", + .major = 1, + .minor = 0, + .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC, + .fops = &appletbdrm_drm_fops, +}; + +static int appletbdrm_setup_mode_config(struct appletbdrm_device *adev) +{ + struct drm_connector *connector = &adev->connector; + struct drm_device *drm = &adev->drm; + struct device *dev = adev->dev; + int ret; + + ret = drmm_mode_config_init(drm); + if (ret) + return dev_err_probe(dev, ret, "Failed to initialize mode configuration\n"); + + /* + * The coordinate system used by the device is different from the + * coordinate system of the framebuffer in that the x and y axes are + * swapped, and that the y axis is inverted; so what the device reports + * as the height is actually the width of the framebuffer and vice + * versa + */ + drm->mode_config.min_width = 0; + drm->mode_config.min_height = 0; + drm->mode_config.max_width = max(adev->height, DRM_SHADOW_PLANE_MAX_WIDTH); + drm->mode_config.max_height = max(adev->width, DRM_SHADOW_PLANE_MAX_HEIGHT); + drm->mode_config.preferred_depth = APPLETBDRM_BITS_PER_PIXEL; + drm->mode_config.funcs = &appletbdrm_mode_config_funcs; + + adev->mode = (struct drm_display_mode) { + DRM_MODE_INIT(60, adev->height, adev->width, + DRM_MODE_RES_MM(adev->height, 218), + DRM_MODE_RES_MM(adev->width, 218)) + }; + + ret = drm_connector_init(drm, connector, + &appletbdrm_connector_funcs, DRM_MODE_CONNECTOR_USB); + if (ret) + return dev_err_probe(dev, ret, "Failed to initialize connector\n"); + + drm_connector_helper_add(connector, &appletbdrm_connector_helper_funcs); + + ret = drm_connector_set_panel_orientation(connector, + DRM_MODE_PANEL_ORIENTATION_RIGHT_UP); + if (ret) + return dev_err_probe(dev, ret, "Failed to set panel orientation\n"); + + connector->display_info.non_desktop = true; + ret = drm_object_property_set_value(&connector->base, + drm->mode_config.non_desktop_property, true); + if (ret) + return dev_err_probe(dev, ret, "Failed to set non-desktop property\n"); + + ret = drm_simple_display_pipe_init(drm, &adev->pipe, &appletbdrm_pipe_funcs, + appletbdrm_formats, ARRAY_SIZE(appletbdrm_formats), + NULL, &adev->connector); + if (ret) + return dev_err_probe(dev, ret, "Failed to initialize simple display pipe\n"); + + drm_plane_enable_fb_damage_clips(&adev->pipe.plane); + + drm_mode_config_reset(drm); + + ret = drm_dev_register(drm, 0); + if (ret) + return dev_err_probe(dev, ret, "Failed to register DRM device\n"); + + return 0; +} + +static int appletbdrm_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct usb_endpoint_descriptor *bulk_in, *bulk_out; + struct device *dev = &intf->dev; + struct appletbdrm_device *adev; + int ret; + + ret = usb_find_common_endpoints(intf->cur_altsetting, &bulk_in, &bulk_out, NULL, NULL); + if (ret) + return dev_err_probe(dev, ret, "Failed to find bulk endpoints\n"); + + adev = devm_drm_dev_alloc(dev, &appletbdrm_drm_driver, struct appletbdrm_device, drm); + if (IS_ERR(adev)) + return PTR_ERR(adev); + + adev->dev = dev; + adev->in_ep = bulk_in->bEndpointAddress; + adev->out_ep = bulk_out->bEndpointAddress; + + usb_set_intfdata(intf, adev); + + ret = appletbdrm_get_information(adev); + if (ret) + return dev_err_probe(dev, ret, "Failed to get display information\n"); + + ret = appletbdrm_signal_readiness(adev); + if (ret) + return dev_err_probe(dev, ret, "Failed to signal readiness\n"); + + ret = appletbdrm_clear_display(adev); + if (ret) + return dev_err_probe(dev, ret, "Failed to clear display\n"); + + return appletbdrm_setup_mode_config(adev); +} + +static void appletbdrm_disconnect(struct usb_interface *intf) +{ + struct appletbdrm_device *adev = usb_get_intfdata(intf); + struct drm_device *drm = &adev->drm; + + drm_dev_unplug(drm); + drm_atomic_helper_shutdown(drm); +} + +static void appletbdrm_shutdown(struct usb_interface *intf) +{ + struct appletbdrm_device *adev = usb_get_intfdata(intf); + + /* + * The framebuffer needs to be cleared on shutdown since its content + * persists across boots + */ + drm_atomic_helper_shutdown(&adev->drm); +} + +static const struct usb_device_id appletbdrm_usb_id_table[] = { + { USB_DEVICE_INTERFACE_CLASS(0x05ac, 0x8302, USB_CLASS_AUDIO_VIDEO) }, + {} +}; +MODULE_DEVICE_TABLE(usb, appletbdrm_usb_id_table); + +static struct usb_driver appletbdrm_usb_driver = { + .name = "appletbdrm", + .probe = appletbdrm_probe, + .disconnect = appletbdrm_disconnect, + .shutdown = appletbdrm_shutdown, + .id_table = appletbdrm_usb_id_table, +}; +module_usb_driver(appletbdrm_usb_driver); + +MODULE_AUTHOR("Kerem Karabay "); +MODULE_DESCRIPTION("Apple Touch Bar DRM Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c index 365e6ddbe90f..cf357cd3389d 100644 --- a/drivers/gpu/vga/vga_switcheroo.c +++ b/drivers/gpu/vga/vga_switcheroo.c @@ -438,12 +438,7 @@ find_active_client(struct list_head *head) bool vga_switcheroo_client_probe_defer(struct pci_dev *pdev) { if ((pdev->class >> 16) == PCI_BASE_CLASS_DISPLAY) { - /* - * apple-gmux is needed on pre-retina MacBook Pro - * to probe the panel if pdev is the inactive GPU. - */ - if (apple_gmux_present() && pdev != vga_default_device() && - !vgasr_priv.handler_flags) + if (apple_gmux_present() && !vgasr_priv.handler_flags) return true; } diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index 08446c89eff6..35ef5d4ef068 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -148,6 +148,27 @@ config HID_APPLEIR Say Y here if you want support for Apple infrared remote control. +config HID_APPLETB_BL + tristate "Apple Touch Bar Backlight" + depends on BACKLIGHT_CLASS_DEVICE + help + Say Y here if you want support for the backlight of Touch Bars on x86 + MacBook Pros. + + To compile this driver as a module, choose M here: the + module will be called hid-appletb-bl. + +config HID_APPLETB_KBD + tristate "Apple Touch Bar Keyboard Mode" + depends on USB_HID + help + Say Y here if you want support for the keyboard mode (escape, + function, media and brightness keys) of Touch Bars on x86 MacBook + Pros. + + To compile this driver as a module, choose M here: the + module will be called hid-appletb-kbd. + config HID_ASUS tristate "Asus" depends on USB_HID @@ -723,6 +744,7 @@ config HID_MULTITOUCH Say Y here if you have one of the following devices: - 3M PCT touch screens - ActionStar dual touch panels + - Touch Bars on x86 MacBook Pros - Atmel panels - Cando dual touch panels - Chunghwa panels diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile index ce71b53ea6c5..fecec1d61393 100644 --- a/drivers/hid/Makefile +++ b/drivers/hid/Makefile @@ -29,6 +29,8 @@ obj-$(CONFIG_HID_ALPS) += hid-alps.o obj-$(CONFIG_HID_ACRUX) += hid-axff.o obj-$(CONFIG_HID_APPLE) += hid-apple.o obj-$(CONFIG_HID_APPLEIR) += hid-appleir.o +obj-$(CONFIG_HID_APPLETB_BL) += hid-appletb-bl.o +obj-$(CONFIG_HID_APPLETB_KBD) += hid-appletb-kbd.o obj-$(CONFIG_HID_CREATIVE_SB0540) += hid-creative-sb0540.o obj-$(CONFIG_HID_ASUS) += hid-asus.o obj-$(CONFIG_HID_AUREAL) += hid-aureal.o diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c index bd022e004356..6dedb84d7cc3 100644 --- a/drivers/hid/hid-apple.c +++ b/drivers/hid/hid-apple.c @@ -8,6 +8,8 @@ * Copyright (c) 2006-2007 Jiri Kosina * Copyright (c) 2008 Jiri Slaby * Copyright (c) 2019 Paul Pawlowski + * Copyright (c) 2023 Orlando Chamberlain + * Copyright (c) 2024 Aditya Garg */ /* @@ -23,6 +25,7 @@ #include #include #include +#include #include "hid-ids.h" @@ -38,12 +41,17 @@ #define APPLE_RDESC_BATTERY BIT(9) #define APPLE_BACKLIGHT_CTL BIT(10) #define APPLE_IS_NON_APPLE BIT(11) +#define APPLE_MAGIC_BACKLIGHT BIT(12) #define APPLE_FLAG_FKEY 0x01 #define HID_COUNTRY_INTERNATIONAL_ISO 13 #define APPLE_BATTERY_TIMEOUT_MS 60000 +#define HID_USAGE_MAGIC_BL 0xff00000f +#define APPLE_MAGIC_REPORT_ID_POWER 3 +#define APPLE_MAGIC_REPORT_ID_BRIGHTNESS 1 + static unsigned int fnmode = 3; module_param(fnmode, uint, 0644); MODULE_PARM_DESC(fnmode, "Mode of fn key on Apple keyboards (0 = disabled, " @@ -81,6 +89,12 @@ struct apple_sc_backlight { struct hid_device *hdev; }; +struct apple_magic_backlight { + struct led_classdev cdev; + struct hid_report *brightness; + struct hid_report *power; +}; + struct apple_sc { struct hid_device *hdev; unsigned long quirks; @@ -822,6 +836,66 @@ static int apple_backlight_init(struct hid_device *hdev) return ret; } +static void apple_magic_backlight_report_set(struct hid_report *rep, s32 value, u8 rate) +{ + rep->field[0]->value[0] = value; + rep->field[1]->value[0] = 0x5e; /* Mimic Windows */ + rep->field[1]->value[0] |= rate << 8; + + hid_hw_request(rep->device, rep, HID_REQ_SET_REPORT); +} + +static void apple_magic_backlight_set(struct apple_magic_backlight *backlight, + int brightness, char rate) +{ + apple_magic_backlight_report_set(backlight->power, brightness ? 1 : 0, rate); + if (brightness) + apple_magic_backlight_report_set(backlight->brightness, brightness, rate); +} + +static int apple_magic_backlight_led_set(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + struct apple_magic_backlight *backlight = container_of(led_cdev, + struct apple_magic_backlight, cdev); + + apple_magic_backlight_set(backlight, brightness, 1); + return 0; +} + +static int apple_magic_backlight_init(struct hid_device *hdev) +{ + struct apple_magic_backlight *backlight; + struct hid_report_enum *report_enum; + + /* + * Ensure this usb endpoint is for the keyboard backlight, not touchbar + * backlight. + */ + if (hdev->collection[0].usage != HID_USAGE_MAGIC_BL) + return -ENODEV; + + backlight = devm_kzalloc(&hdev->dev, sizeof(*backlight), GFP_KERNEL); + if (!backlight) + return -ENOMEM; + + report_enum = &hdev->report_enum[HID_FEATURE_REPORT]; + backlight->brightness = report_enum->report_id_hash[APPLE_MAGIC_REPORT_ID_BRIGHTNESS]; + backlight->power = report_enum->report_id_hash[APPLE_MAGIC_REPORT_ID_POWER]; + + if (!backlight->brightness || !backlight->power) + return -ENODEV; + + backlight->cdev.name = ":white:" LED_FUNCTION_KBD_BACKLIGHT; + backlight->cdev.max_brightness = backlight->brightness->field[0]->logical_maximum; + backlight->cdev.brightness_set_blocking = apple_magic_backlight_led_set; + + apple_magic_backlight_set(backlight, 0, 0); + + return devm_led_classdev_register(&hdev->dev, &backlight->cdev); + +} + static int apple_probe(struct hid_device *hdev, const struct hid_device_id *id) { @@ -860,7 +934,18 @@ static int apple_probe(struct hid_device *hdev, if (quirks & APPLE_BACKLIGHT_CTL) apple_backlight_init(hdev); + if (quirks & APPLE_MAGIC_BACKLIGHT) { + ret = apple_magic_backlight_init(hdev); + if (ret) + goto out_err; + } + return 0; + +out_err: + del_timer_sync(&asc->battery_timer); + hid_hw_stop(hdev); + return ret; } static void apple_remove(struct hid_device *hdev) @@ -1073,6 +1158,8 @@ static const struct hid_device_id apple_devices[] = { .driver_data = APPLE_HAS_FN | APPLE_ISO_TILDE_QUIRK | APPLE_RDESC_BATTERY }, { HID_BLUETOOTH_DEVICE(BT_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_NUMPAD_2021), .driver_data = APPLE_HAS_FN | APPLE_ISO_TILDE_QUIRK }, + { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_TOUCHBAR_BACKLIGHT), + .driver_data = APPLE_MAGIC_BACKLIGHT }, { } }; diff --git a/drivers/hid/hid-appletb-bl.c b/drivers/hid/hid-appletb-bl.c new file mode 100644 index 000000000000..0c5e4b776851 --- /dev/null +++ b/drivers/hid/hid-appletb-bl.c @@ -0,0 +1,193 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Apple Touch Bar Backlight Driver + * + * Copyright (c) 2017-2018 Ronald Tschalär + * Copyright (c) 2022-2023 Kerem Karabay + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include + +#include "hid-ids.h" + +#define APPLETB_BL_ON 1 +#define APPLETB_BL_DIM 3 +#define APPLETB_BL_OFF 4 + +#define HID_UP_APPLEVENDOR_TB_BL 0xff120000 + +#define HID_VD_APPLE_TB_BRIGHTNESS 0xff120001 +#define HID_USAGE_AUX1 0xff120020 +#define HID_USAGE_BRIGHTNESS 0xff120021 + +struct appletb_bl { + struct hid_field *aux1_field, *brightness_field; + struct backlight_device *bdev; + + bool full_on; +}; + +const u8 appletb_bl_brightness_map[] = { + APPLETB_BL_OFF, + APPLETB_BL_DIM, + APPLETB_BL_ON +}; + +static int appletb_bl_set_brightness(struct appletb_bl *bl, u8 brightness) +{ + struct hid_report *report = bl->brightness_field->report; + struct hid_device *hdev = report->device; + int ret; + + ret = hid_set_field(bl->aux1_field, 0, 1); + if (ret) { + hid_err(hdev, "Failed to set auxiliary field (%pe)\n", ERR_PTR(ret)); + return ret; + } + + ret = hid_set_field(bl->brightness_field, 0, brightness); + if (ret) { + hid_err(hdev, "Failed to set brightness field (%pe)\n", ERR_PTR(ret)); + return ret; + } + + if (!bl->full_on) { + ret = hid_hw_power(hdev, PM_HINT_FULLON); + if (ret < 0) { + hid_err(hdev, "Device didn't power on (%pe)\n", ERR_PTR(ret)); + return ret; + } + + bl->full_on = true; + } + + hid_hw_request(hdev, report, HID_REQ_SET_REPORT); + + if (brightness == APPLETB_BL_OFF) { + hid_hw_power(hdev, PM_HINT_NORMAL); + bl->full_on = false; + } + + return 0; +} + +static int appletb_bl_update_status(struct backlight_device *bdev) +{ + struct appletb_bl *bl = bl_get_data(bdev); + u16 brightness; + + if (bdev->props.state & BL_CORE_SUSPENDED) + brightness = 0; + else + brightness = backlight_get_brightness(bdev); + + return appletb_bl_set_brightness(bl, appletb_bl_brightness_map[brightness]); +} + +static const struct backlight_ops appletb_bl_backlight_ops = { + .options = BL_CORE_SUSPENDRESUME, + .update_status = appletb_bl_update_status, +}; + +static int appletb_bl_probe(struct hid_device *hdev, const struct hid_device_id *id) +{ + struct hid_field *aux1_field, *brightness_field; + struct backlight_properties bl_props = { 0 }; + struct device *dev = &hdev->dev; + struct appletb_bl *bl; + int ret; + + ret = hid_parse(hdev); + if (ret) + return dev_err_probe(dev, ret, "HID parse failed\n"); + + aux1_field = hid_find_field(hdev, HID_FEATURE_REPORT, + HID_VD_APPLE_TB_BRIGHTNESS, HID_USAGE_AUX1); + + brightness_field = hid_find_field(hdev, HID_FEATURE_REPORT, + HID_VD_APPLE_TB_BRIGHTNESS, HID_USAGE_BRIGHTNESS); + + if (!aux1_field || !brightness_field) + return -ENODEV; + + if (aux1_field->report != brightness_field->report) + return dev_err_probe(dev, -ENODEV, "Encountered unexpected report structure\n"); + + bl = devm_kzalloc(dev, sizeof(*bl), GFP_KERNEL); + if (!bl) + return -ENOMEM; + + ret = hid_hw_start(hdev, HID_CONNECT_DRIVER); + if (ret) + return dev_err_probe(dev, ret, "HID hardware start failed\n"); + + ret = hid_hw_open(hdev); + if (ret) { + dev_err_probe(dev, ret, "HID hardware open failed\n"); + goto stop_hw; + } + + bl->aux1_field = aux1_field; + bl->brightness_field = brightness_field; + + ret = appletb_bl_set_brightness(bl, APPLETB_BL_OFF); + if (ret) { + dev_err_probe(dev, ret, "Failed to set touch bar brightness to off\n"); + goto close_hw; + } + + bl_props.type = BACKLIGHT_RAW; + bl_props.max_brightness = ARRAY_SIZE(appletb_bl_brightness_map) - 1; + + bl->bdev = devm_backlight_device_register(dev, "appletb_backlight", dev, bl, + &appletb_bl_backlight_ops, &bl_props); + if (IS_ERR(bl->bdev)) { + ret = PTR_ERR(bl->bdev); + dev_err_probe(dev, ret, "Failed to register backlight device\n"); + goto close_hw; + } + + hid_set_drvdata(hdev, bl); + + return 0; + +close_hw: + hid_hw_close(hdev); +stop_hw: + hid_hw_stop(hdev); + + return ret; +} + +static void appletb_bl_remove(struct hid_device *hdev) +{ + struct appletb_bl *bl = hid_get_drvdata(hdev); + + appletb_bl_set_brightness(bl, APPLETB_BL_OFF); + + hid_hw_close(hdev); + hid_hw_stop(hdev); +} + +static const struct hid_device_id appletb_bl_hid_ids[] = { + /* MacBook Pro's 2018, 2019, with T2 chip: iBridge DFR Brightness */ + { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_TOUCHBAR_BACKLIGHT) }, + { } +}; +MODULE_DEVICE_TABLE(hid, appletb_bl_hid_ids); + +static struct hid_driver appletb_bl_hid_driver = { + .name = "hid-appletb-bl", + .id_table = appletb_bl_hid_ids, + .probe = appletb_bl_probe, + .remove = appletb_bl_remove, +}; +module_hid_driver(appletb_bl_hid_driver); + +MODULE_AUTHOR("Ronald Tschalär"); +MODULE_AUTHOR("Kerem Karabay "); +MODULE_DESCRIPTION("MacBookPro Touch Bar Backlight Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/hid/hid-appletb-kbd.c b/drivers/hid/hid-appletb-kbd.c new file mode 100644 index 000000000000..bc004c40805f --- /dev/null +++ b/drivers/hid/hid-appletb-kbd.c @@ -0,0 +1,289 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Apple Touch Bar Keyboard Mode Driver + * + * Copyright (c) 2017-2018 Ronald Tschalär + * Copyright (c) 2022-2023 Kerem Karabay + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "hid-ids.h" + +#define APPLETB_KBD_MODE_ESC 0 +#define APPLETB_KBD_MODE_FN 1 +#define APPLETB_KBD_MODE_SPCL 2 +#define APPLETB_KBD_MODE_OFF 3 +#define APPLETB_KBD_MODE_MAX APPLETB_KBD_MODE_OFF + +#define HID_USAGE_MODE 0x00ff0004 + +struct appletb_kbd { + struct hid_field *mode_field; + + u8 saved_mode; + u8 current_mode; +}; + +static const struct key_entry appletb_kbd_keymap[] = { + { KE_KEY, KEY_ESC, { KEY_ESC } }, + { KE_KEY, KEY_F1, { KEY_BRIGHTNESSDOWN } }, + { KE_KEY, KEY_F2, { KEY_BRIGHTNESSUP } }, + { KE_KEY, KEY_F3, { KEY_RESERVED } }, + { KE_KEY, KEY_F4, { KEY_RESERVED } }, + { KE_KEY, KEY_F5, { KEY_KBDILLUMDOWN } }, + { KE_KEY, KEY_F6, { KEY_KBDILLUMUP } }, + { KE_KEY, KEY_F7, { KEY_PREVIOUSSONG } }, + { KE_KEY, KEY_F8, { KEY_PLAYPAUSE } }, + { KE_KEY, KEY_F9, { KEY_NEXTSONG } }, + { KE_KEY, KEY_F10, { KEY_MUTE } }, + { KE_KEY, KEY_F11, { KEY_VOLUMEDOWN } }, + { KE_KEY, KEY_F12, { KEY_VOLUMEUP } }, + { KE_END, 0 } +}; + +static int appletb_kbd_set_mode(struct appletb_kbd *kbd, u8 mode) +{ + struct hid_report *report = kbd->mode_field->report; + struct hid_device *hdev = report->device; + int ret; + + ret = hid_hw_power(hdev, PM_HINT_FULLON); + if (ret) { + hid_err(hdev, "Device didn't resume (%pe)\n", ERR_PTR(ret)); + return ret; + } + + ret = hid_set_field(kbd->mode_field, 0, mode); + if (ret) { + hid_err(hdev, "Failed to set mode field to %u (%pe)\n", mode, ERR_PTR(ret)); + goto power_normal; + } + + hid_hw_request(hdev, report, HID_REQ_SET_REPORT); + + kbd->current_mode = mode; + +power_normal: + hid_hw_power(hdev, PM_HINT_NORMAL); + + return ret; +} + +static ssize_t mode_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct appletb_kbd *kbd = dev_get_drvdata(dev); + + return sysfs_emit(buf, "%d\n", kbd->current_mode); +} + +static ssize_t mode_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct appletb_kbd *kbd = dev_get_drvdata(dev); + u8 mode; + int ret; + + ret = kstrtou8(buf, 0, &mode); + if (ret) + return ret; + + if (mode > APPLETB_KBD_MODE_MAX) + return -EINVAL; + + ret = appletb_kbd_set_mode(kbd, mode); + + return ret < 0 ? ret : size; +} +static DEVICE_ATTR_RW(mode); + +struct attribute *appletb_kbd_attrs[] = { + &dev_attr_mode.attr, + NULL +}; +ATTRIBUTE_GROUPS(appletb_kbd); + +static int appletb_tb_key_to_slot(unsigned int code) +{ + switch (code) { + case KEY_ESC: + return 0; + case KEY_F1 ... KEY_F10: + return code - KEY_F1 + 1; + case KEY_F11 ... KEY_F12: + return code - KEY_F11 + 11; + + default: + return -EINVAL; + } +} + +static int appletb_kbd_hid_event(struct hid_device *hdev, struct hid_field *field, + struct hid_usage *usage, __s32 value) +{ + struct appletb_kbd *kbd = hid_get_drvdata(hdev); + struct key_entry *translation; + struct input_dev *input; + int slot; + + if ((usage->hid & HID_USAGE_PAGE) != HID_UP_KEYBOARD || usage->type != EV_KEY) + return 0; + + input = field->hidinput->input; + + /* + * Skip non-touch-bar keys. + * + * Either the touch bar itself or usbhid generate a slew of key-down + * events for all the meta keys. None of which we're at all interested + * in. + */ + slot = appletb_tb_key_to_slot(usage->code); + if (slot < 0) + return 0; + + translation = sparse_keymap_entry_from_scancode(input, usage->code); + + if (translation && kbd->current_mode == APPLETB_KBD_MODE_SPCL) { + input_event(input, usage->type, translation->keycode, value); + + return 1; + } + + return kbd->current_mode == APPLETB_KBD_MODE_OFF; +} + +static int appletb_kbd_input_configured(struct hid_device *hdev, struct hid_input *hidinput) +{ + struct input_dev *input = hidinput->input; + + /* + * Clear various input capabilities that are blindly set by the hid + * driver (usbkbd.c) + */ + memset(input->evbit, 0, sizeof(input->evbit)); + memset(input->keybit, 0, sizeof(input->keybit)); + memset(input->ledbit, 0, sizeof(input->ledbit)); + + __set_bit(EV_REP, input->evbit); + + return sparse_keymap_setup(input, appletb_kbd_keymap, NULL); +} + +static int appletb_kbd_probe(struct hid_device *hdev, const struct hid_device_id *id) +{ + struct appletb_kbd *kbd; + struct device *dev = &hdev->dev; + struct hid_field *mode_field; + int ret; + + ret = hid_parse(hdev); + if (ret) + return dev_err_probe(dev, ret, "HID parse failed\n"); + + mode_field = hid_find_field(hdev, HID_OUTPUT_REPORT, + HID_GD_KEYBOARD, HID_USAGE_MODE); + if (!mode_field) + return -ENODEV; + + kbd = devm_kzalloc(dev, sizeof(*kbd), GFP_KERNEL); + if (!kbd) + return -ENOMEM; + + kbd->mode_field = mode_field; + + ret = hid_hw_start(hdev, HID_CONNECT_HIDINPUT); + if (ret) + return dev_err_probe(dev, ret, "HID hw start failed\n"); + + ret = hid_hw_open(hdev); + if (ret) { + dev_err_probe(dev, ret, "HID hw open failed\n"); + goto stop_hw; + } + + ret = appletb_kbd_set_mode(kbd, APPLETB_KBD_MODE_OFF); + if (ret) { + dev_err_probe(dev, ret, "Failed to set touchbar mode\n"); + goto close_hw; + } + + hid_set_drvdata(hdev, kbd); + + return 0; + +close_hw: + hid_hw_close(hdev); +stop_hw: + hid_hw_stop(hdev); + return ret; +} + +static void appletb_kbd_remove(struct hid_device *hdev) +{ + struct appletb_kbd *kbd = hid_get_drvdata(hdev); + + appletb_kbd_set_mode(kbd, APPLETB_KBD_MODE_OFF); + + hid_hw_close(hdev); + hid_hw_stop(hdev); +} + +#ifdef CONFIG_PM +static int appletb_kbd_suspend(struct hid_device *hdev, pm_message_t msg) +{ + struct appletb_kbd *kbd = hid_get_drvdata(hdev); + + kbd->saved_mode = kbd->current_mode; + appletb_kbd_set_mode(kbd, APPLETB_KBD_MODE_OFF); + + return 0; +} + +static int appletb_kbd_reset_resume(struct hid_device *hdev) +{ + struct appletb_kbd *kbd = hid_get_drvdata(hdev); + + appletb_kbd_set_mode(kbd, kbd->saved_mode); + + return 0; +} +#endif + +static const struct hid_device_id appletb_kbd_hid_ids[] = { + /* MacBook Pro's 2018, 2019, with T2 chip: iBridge Display */ + { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_TOUCHBAR_DISPLAY) }, + { } +}; +MODULE_DEVICE_TABLE(hid, appletb_kbd_hid_ids); + +static struct hid_driver appletb_kbd_hid_driver = { + .name = "hid-appletb-kbd", + .id_table = appletb_kbd_hid_ids, + .probe = appletb_kbd_probe, + .remove = appletb_kbd_remove, + .event = appletb_kbd_hid_event, + .input_configured = appletb_kbd_input_configured, +#ifdef CONFIG_PM + .suspend = appletb_kbd_suspend, + .reset_resume = appletb_kbd_reset_resume, +#endif + .driver.dev_groups = appletb_kbd_groups, +}; +module_hid_driver(appletb_kbd_hid_driver); + +MODULE_AUTHOR("Ronald Tschalär"); +MODULE_AUTHOR("Kerem Karabay "); +MODULE_DESCRIPTION("MacBookPro Touch Bar Keyboard Mode Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 74efda212c55..f4379efdbf30 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1912,6 +1912,31 @@ int hid_set_field(struct hid_field *field, unsigned offset, __s32 value) } EXPORT_SYMBOL_GPL(hid_set_field); +struct hid_field *hid_find_field(struct hid_device *hdev, unsigned int report_type, + unsigned int application, unsigned int usage) +{ + struct list_head *report_list = &hdev->report_enum[report_type].report_list; + struct hid_report *report; + int i, j; + + list_for_each_entry(report, report_list, list) { + if (report->application != application) + continue; + + for (i = 0; i < report->maxfield; i++) { + struct hid_field *field = report->field[i]; + + for (j = 0; j < field->maxusage; j++) { + if (field->usage[j].hid == usage) + return field; + } + } + } + + return NULL; +} +EXPORT_SYMBOL_GPL(hid_find_field); + static struct hid_report *hid_get_report(struct hid_report_enum *report_enum, const u8 *data) { diff --git a/drivers/hid/hid-google-hammer.c b/drivers/hid/hid-google-hammer.c index 25331695ae32..3380694ba18c 100644 --- a/drivers/hid/hid-google-hammer.c +++ b/drivers/hid/hid-google-hammer.c @@ -418,38 +418,15 @@ static int hammer_event(struct hid_device *hid, struct hid_field *field, return 0; } -static bool hammer_has_usage(struct hid_device *hdev, unsigned int report_type, - unsigned application, unsigned usage) -{ - struct hid_report_enum *re = &hdev->report_enum[report_type]; - struct hid_report *report; - int i, j; - - list_for_each_entry(report, &re->report_list, list) { - if (report->application != application) - continue; - - for (i = 0; i < report->maxfield; i++) { - struct hid_field *field = report->field[i]; - - for (j = 0; j < field->maxusage; j++) - if (field->usage[j].hid == usage) - return true; - } - } - - return false; -} - static bool hammer_has_folded_event(struct hid_device *hdev) { - return hammer_has_usage(hdev, HID_INPUT_REPORT, + return !!hid_find_field(hdev, HID_INPUT_REPORT, HID_GD_KEYBOARD, HID_USAGE_KBD_FOLDED); } static bool hammer_has_backlight_control(struct hid_device *hdev) { - return hammer_has_usage(hdev, HID_OUTPUT_REPORT, + return !!hid_find_field(hdev, HID_OUTPUT_REPORT, HID_GD_KEYBOARD, HID_AD_BRIGHTNESS); } diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 56fc78841f24..0fed955364c3 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -78,6 +78,7 @@ #define MT_QUIRK_ORIENTATION_INVERT BIT(22) #define MT_QUIRK_HAS_TYPE_COVER_BACKLIGHT BIT(23) #define MT_QUIRK_HAS_TYPE_COVER_TABLET_MODE_SWITCH BIT(24) +#define MT_QUIRK_TOUCH_IS_TIPSTATE BIT(25) #define MT_INPUTMODE_TOUCHSCREEN 0x02 #define MT_INPUTMODE_TOUCHPAD 0x03 @@ -145,6 +146,7 @@ struct mt_class { __s32 sn_height; /* Signal/noise ratio for height events */ __s32 sn_pressure; /* Signal/noise ratio for pressure events */ __u8 maxcontacts; + bool is_direct; /* true for touchscreens */ bool is_indirect; /* true for touchpads */ bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ }; @@ -225,6 +225,7 @@ #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 #define MT_CLS_SMART_TECH 0x0113 #define MT_CLS_WIN_8_MS_SURFACE_TYPE_COVER 0x0114 +#define MT_CLS_APPLE_TOUCHBAR 0x0115 #define MT_DEFAULT_MAXCONTACT 10 #define MT_MAX_MAXCONTACT 250 @@ -420,6 +420,13 @@ MT_QUIRK_WIN8_PTP_BUTTONS, .export_all_inputs = true }, + { .name = MT_CLS_APPLE_TOUCHBAR, + .quirks = MT_QUIRK_HOVERING | + MT_QUIRK_TOUCH_IS_TIPSTATE | + MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE, + .is_direct = true, + .maxcontacts = 11, + }, { } }; @@ -489,9 +499,6 @@ static void mt_feature_mapping(struct hid_device *hdev, if (!td->maxcontacts && field->logical_maximum <= MT_MAX_MAXCONTACT) td->maxcontacts = field->logical_maximum; - if (td->mtclass.maxcontacts) - /* check if the maxcontacts is given by the class */ - td->maxcontacts = td->mtclass.maxcontacts; break; case HID_DG_BUTTONTYPE: @@ -565,13 +572,13 @@ static struct mt_application *mt_allocate_application(struct mt_device *td, mt_application->application = application; INIT_LIST_HEAD(&mt_application->mt_usages); - if (application == HID_DG_TOUCHSCREEN) + if (application == HID_DG_TOUCHSCREEN && !td->mtclass.is_indirect) mt_application->mt_flags |= INPUT_MT_DIRECT; /* * Model touchscreens providing buttons as touchpads. */ - if (application == HID_DG_TOUCHPAD) { + if (application == HID_DG_TOUCHPAD && !td->mtclass.is_direct) { mt_application->mt_flags |= INPUT_MT_POINTER; td->inputmode_value = MT_INPUTMODE_TOUCHPAD; } @@ -635,7 +642,9 @@ static struct mt_report_data *mt_allocate_report_data(struct mt_device *td, if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) { for (n = 0; n < field->report_count; n++) { - if (field->usage[n].hid == HID_DG_CONTACTID) { + unsigned int hid = field->usage[n].hid; + + if (hid == HID_DG_CONTACTID || hid == HID_DG_TRANSDUCER_INDEX) { rdata->is_mt_collection = true; break; } @@ -807,6 +816,15 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, MT_STORE_FIELD(confidence_state); return 1; + case HID_DG_TOUCH: + /* + * Legacy devices use TIPSWITCH and not TOUCH. + * Let's just ignore this field unless the quirk is set. + */ + if (!(cls->quirks & MT_QUIRK_TOUCH_IS_TIPSTATE)) + return -1; + + fallthrough; case HID_DG_TIPSWITCH: if (field->application != HID_GD_SYSTEM_MULTIAXIS) input_set_capability(hi->input, @@ -814,6 +832,7 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, MT_STORE_FIELD(tip_state); return 1; case HID_DG_CONTACTID: + case HID_DG_TRANSDUCER_INDEX: MT_STORE_FIELD(contactid); app->touches_by_report++; return 1; @@ -869,10 +888,6 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, case HID_DG_CONTACTMAX: /* contact max are global to the report */ return -1; - case HID_DG_TOUCH: - /* Legacy devices use TIPSWITCH and not TOUCH. - * Let's just ignore this field. */ - return -1; } /* let hid-input decide for the others */ return 0; @@ -1300,6 +1315,10 @@ static int mt_touch_input_configured(struct hid_device *hdev, struct input_dev *input = hi->input; int ret; + /* check if the maxcontacts is given by the class */ + if (cls->maxcontacts) + td->maxcontacts = cls->maxcontacts; + if (!td->maxcontacts) td->maxcontacts = MT_DEFAULT_MAXCONTACT; @@ -1307,6 +1326,9 @@ static int mt_touch_input_configured(struct hid_device *hdev, if (td->serial_maybe) mt_post_parse_default_settings(td, app); + if (cls->is_direct) + app->mt_flags |= INPUT_MT_DIRECT; + if (cls->is_indirect) app->mt_flags |= INPUT_MT_POINTER; @@ -1882,6 +1882,17 @@ } } + ret = hid_parse(hdev); + if (ret != 0) { + unregister_pm_notifier(&td->pm_notifier); + return ret; + } + + if (mtclass->name == MT_CLS_APPLE_TOUCHBAR && + !hid_find_field(hdev, HID_INPUT_REPORT, + HID_DG_TOUCHPAD, HID_DG_TRANSDUCER_INDEX)) + return -ENODEV; + td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); if (!td) { dev_err(&hdev->dev, "cannot allocate multitouch data\n"); @@ -1932,12 +1943,6 @@ timer_setup(&td->release_timer, mt_expired_timeout, 0); - ret = hid_parse(hdev); - if (ret != 0) { - unregister_pm_notifier(&td->pm_notifier); - return ret; - } - if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) mt_fix_const_fields(hdev, HID_DG_CONTACTID); @@ -2427,6 +2427,11 @@ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_MICROSOFT, 0x09c0) }, + /* Apple Touch Bars */ + { .driver_data = MT_CLS_APPLE_TOUCHBAR, + HID_USB_DEVICE(USB_VENDOR_ID_APPLE, + USB_DEVICE_ID_APPLE_TOUCHBAR_DISPLAY) }, + /* Google MT devices */ { .driver_data = MT_CLS_GOOGLE, HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, diff --git a/drivers/hid/hid-quirks.c b/drivers/hid/hid-quirks.c index e0bbf0c6345d..7c576d6540fe 100644 --- a/drivers/hid/hid-quirks.c +++ b/drivers/hid/hid-quirks.c @@ -328,8 +328,6 @@ static const struct hid_device_id hid_have_special_driver[] = { { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_2021) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_FINGERPRINT_2021) }, - { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_TOUCHBAR_BACKLIGHT) }, - { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_TOUCHBAR_DISPLAY) }, #endif #if IS_ENABLED(CONFIG_HID_APPLEIR) { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) }, @@ -338,6 +336,12 @@ static const struct hid_device_id hid_have_special_driver[] = { { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) }, #endif +#if IS_ENABLED(CONFIG_HID_APPLETB_BL) + { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_TOUCHBAR_BACKLIGHT) }, +#endif +#if IS_ENABLED(CONFIG_HID_APPLETB_KBD) + { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_TOUCHBAR_DISPLAY) }, +#endif #if IS_ENABLED(CONFIG_HID_ASUS) { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD) }, { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD) }, diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c index fc6d6a9053ce..698f44794453 100644 --- a/drivers/hwmon/applesmc.c +++ b/drivers/hwmon/applesmc.c @@ -6,6 +6,7 @@ * * Copyright (C) 2007 Nicolas Boichat * Copyright (C) 2010 Henrik Rydberg + * Copyright (C) 2019 Paul Pawlowski * * Based on hdaps.c driver: * Copyright (C) 2005 Robert Love @@ -18,7 +19,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include -#include +#include #include #include #include @@ -35,12 +36,24 @@ #include /* data port used by Apple SMC */ -#define APPLESMC_DATA_PORT 0x300 +#define APPLESMC_DATA_PORT 0 /* command/status port used by Apple SMC */ -#define APPLESMC_CMD_PORT 0x304 +#define APPLESMC_CMD_PORT 4 #define APPLESMC_NR_PORTS 32 /* 0x300-0x31f */ +#define APPLESMC_IOMEM_KEY_DATA 0 +#define APPLESMC_IOMEM_KEY_STATUS 0x4005 +#define APPLESMC_IOMEM_KEY_NAME 0x78 +#define APPLESMC_IOMEM_KEY_DATA_LEN 0x7D +#define APPLESMC_IOMEM_KEY_SMC_ID 0x7E +#define APPLESMC_IOMEM_KEY_CMD 0x7F +#define APPLESMC_IOMEM_MIN_SIZE 0x4006 + +#define APPLESMC_IOMEM_KEY_TYPE_CODE 0 +#define APPLESMC_IOMEM_KEY_TYPE_DATA_LEN 5 +#define APPLESMC_IOMEM_KEY_TYPE_FLAGS 6 + #define APPLESMC_MAX_DATA_LENGTH 32 /* Apple SMC status bits */ @@ -74,6 +87,7 @@ #define FAN_ID_FMT "F%dID" /* r-o char[16] */ #define TEMP_SENSOR_TYPE "sp78" +#define FLOAT_TYPE "flt " /* List of keys used to read/write fan speeds */ static const char *const fan_speed_fmt[] = { @@ -83,6 +97,7 @@ static const char *const fan_speed_fmt[] = { "F%dSf", /* safe speed - not all models */ "F%dTg", /* target speed (manual: rw) */ }; +#define FAN_MANUAL_FMT "F%dMd" #define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */ #define INIT_WAIT_MSECS 50 /* ... in 50ms increments */ @@ -119,7 +134,7 @@ struct applesmc_entry { }; /* Register lookup and registers common to all SMCs */ -static struct applesmc_registers { +struct applesmc_registers { struct mutex mutex; /* register read/write mutex */ unsigned int key_count; /* number of SMC registers */ unsigned int fan_count; /* number of fans */ @@ -133,26 +148,38 @@ static struct applesmc_registers { bool init_complete; /* true when fully initialized */ struct applesmc_entry *cache; /* cached key entries */ const char **index; /* temperature key index */ -} smcreg = { - .mutex = __MUTEX_INITIALIZER(smcreg.mutex), }; -static const int debug; -static struct platform_device *pdev; -static s16 rest_x; -static s16 rest_y; -static u8 backlight_state[2]; +struct applesmc_device { + struct acpi_device *dev; + struct device *ldev; + struct applesmc_registers reg; -static struct device *hwmon_dev; -static struct input_dev *applesmc_idev; + bool port_base_set, iomem_base_set; + u16 port_base; + u8 *__iomem iomem_base; + u32 iomem_base_addr, iomem_base_size; -/* - * Last index written to key_at_index sysfs file, and value to use for all other - * key_at_index_* sysfs files. - */ -static unsigned int key_at_index; + s16 rest_x; + s16 rest_y; + + u8 backlight_state[2]; + + struct device *hwmon_dev; + struct input_dev *idev; + + /* + * Last index written to key_at_index sysfs file, and value to use for all other + * key_at_index_* sysfs files. + */ + unsigned int key_at_index; -static struct workqueue_struct *applesmc_led_wq; + struct workqueue_struct *backlight_wq; + struct work_struct backlight_work; + struct led_classdev backlight_dev; +}; + +static const int debug; /* * Wait for specific status bits with a mask on the SMC. @@ -162,7 +189,7 @@ static struct workqueue_struct *applesmc_led_wq; * run out past 500ms. */ -static int wait_status(u8 val, u8 mask) +static int port_wait_status(struct applesmc_device *smc, u8 val, u8 mask) { u8 status; int us; @@ -170,7 +197,7 @@ static int wait_status(u8 val, u8 mask) us = APPLESMC_MIN_WAIT; for (i = 0; i < 24 ; i++) { - status = inb(APPLESMC_CMD_PORT); + status = inb(smc->port_base + APPLESMC_CMD_PORT); if ((status & mask) == val) return 0; usleep_range(us, us * 2); @@ -180,13 +207,13 @@ static int wait_status(u8 val, u8 mask) return -EIO; } -/* send_byte - Write to SMC data port. Callers must hold applesmc_lock. */ +/* port_send_byte - Write to SMC data port. Callers must hold applesmc_lock. */ -static int send_byte(u8 cmd, u16 port) +static int port_send_byte(struct applesmc_device *smc, u8 cmd, u16 port) { int status; - status = wait_status(0, SMC_STATUS_IB_CLOSED); + status = port_wait_status(smc, 0, SMC_STATUS_IB_CLOSED); if (status) return status; /* @@ -195,24 +222,25 @@ static int send_byte(u8 cmd, u16 port) * this extra read may not happen if status returns both * simultaneously and this would appear to be required. */ - status = wait_status(SMC_STATUS_BUSY, SMC_STATUS_BUSY); + status = port_wait_status(smc, SMC_STATUS_BUSY, SMC_STATUS_BUSY); if (status) return status; - outb(cmd, port); + outb(cmd, smc->port_base + port); return 0; } -/* send_command - Write a command to the SMC. Callers must hold applesmc_lock. */ +/* port_send_command - Write a command to the SMC. Callers must hold applesmc_lock. */ -static int send_command(u8 cmd) +static int port_send_command(struct applesmc_device *smc, u8 cmd) { int ret; - ret = wait_status(0, SMC_STATUS_IB_CLOSED); + ret = port_wait_status(smc, 0, SMC_STATUS_IB_CLOSED); if (ret) return ret; - outb(cmd, APPLESMC_CMD_PORT); + + outb(cmd, smc->port_base + APPLESMC_CMD_PORT); return 0; } @@ -222,110 +250,304 @@ static int send_command(u8 cmd) * If busy is stuck high after the command then the SMC is jammed. */ -static int smc_sane(void) +static int port_smc_sane(struct applesmc_device *smc) { int ret; - ret = wait_status(0, SMC_STATUS_BUSY); + ret = port_wait_status(smc, 0, SMC_STATUS_BUSY); if (!ret) return ret; - ret = send_command(APPLESMC_READ_CMD); + ret = port_send_command(smc, APPLESMC_READ_CMD); if (ret) return ret; - return wait_status(0, SMC_STATUS_BUSY); + return port_wait_status(smc, 0, SMC_STATUS_BUSY); } -static int send_argument(const char *key) +static int port_send_argument(struct applesmc_device *smc, const char *key) { int i; for (i = 0; i < 4; i++) - if (send_byte(key[i], APPLESMC_DATA_PORT)) + if (port_send_byte(smc, key[i], APPLESMC_DATA_PORT)) return -EIO; return 0; } -static int read_smc(u8 cmd, const char *key, u8 *buffer, u8 len) +static int port_read_smc(struct applesmc_device *smc, u8 cmd, const char *key, + u8 *buffer, u8 len) { u8 status, data = 0; int i; int ret; - ret = smc_sane(); + ret = port_smc_sane(smc); if (ret) return ret; - if (send_command(cmd) || send_argument(key)) { + if (port_send_command(smc, cmd) || port_send_argument(smc, key)) { pr_warn("%.4s: read arg fail\n", key); return -EIO; } /* This has no effect on newer (2012) SMCs */ - if (send_byte(len, APPLESMC_DATA_PORT)) { + if (port_send_byte(smc, len, APPLESMC_DATA_PORT)) { pr_warn("%.4s: read len fail\n", key); return -EIO; } for (i = 0; i < len; i++) { - if (wait_status(SMC_STATUS_AWAITING_DATA | SMC_STATUS_BUSY, + if (port_wait_status(smc, + SMC_STATUS_AWAITING_DATA | SMC_STATUS_BUSY, SMC_STATUS_AWAITING_DATA | SMC_STATUS_BUSY)) { pr_warn("%.4s: read data[%d] fail\n", key, i); return -EIO; } - buffer[i] = inb(APPLESMC_DATA_PORT); + buffer[i] = inb(smc->port_base + APPLESMC_DATA_PORT); } /* Read the data port until bit0 is cleared */ for (i = 0; i < 16; i++) { udelay(APPLESMC_MIN_WAIT); - status = inb(APPLESMC_CMD_PORT); + status = inb(smc->port_base + APPLESMC_CMD_PORT); if (!(status & SMC_STATUS_AWAITING_DATA)) break; - data = inb(APPLESMC_DATA_PORT); + data = inb(smc->port_base + APPLESMC_DATA_PORT); } if (i) pr_warn("flushed %d bytes, last value is: %d\n", i, data); - return wait_status(0, SMC_STATUS_BUSY); + return port_wait_status(smc, 0, SMC_STATUS_BUSY); } -static int write_smc(u8 cmd, const char *key, const u8 *buffer, u8 len) +static int port_write_smc(struct applesmc_device *smc, u8 cmd, const char *key, + const u8 *buffer, u8 len) { int i; int ret; - ret = smc_sane(); + ret = port_smc_sane(smc); if (ret) return ret; - if (send_command(cmd) || send_argument(key)) { + if (port_send_command(smc, cmd) || port_send_argument(smc, key)) { pr_warn("%s: write arg fail\n", key); return -EIO; } - if (send_byte(len, APPLESMC_DATA_PORT)) { + if (port_send_byte(smc, len, APPLESMC_DATA_PORT)) { pr_warn("%.4s: write len fail\n", key); return -EIO; } for (i = 0; i < len; i++) { - if (send_byte(buffer[i], APPLESMC_DATA_PORT)) { + if (port_send_byte(smc, buffer[i], APPLESMC_DATA_PORT)) { pr_warn("%s: write data fail\n", key); return -EIO; } } - return wait_status(0, SMC_STATUS_BUSY); + return port_wait_status(smc, 0, SMC_STATUS_BUSY); } -static int read_register_count(unsigned int *count) +static int port_get_smc_key_info(struct applesmc_device *smc, + const char *key, struct applesmc_entry *info) { - __be32 be; int ret; + u8 raw[6]; - ret = read_smc(APPLESMC_READ_CMD, KEY_COUNT_KEY, (u8 *)&be, 4); + ret = port_read_smc(smc, APPLESMC_GET_KEY_TYPE_CMD, key, raw, 6); if (ret) return ret; + info->len = raw[0]; + memcpy(info->type, &raw[1], 4); + info->flags = raw[5]; + return 0; +} + + +/* + * MMIO based communication. + * TODO: Use updated mechanism for cmd timeout/retry + */ + +static void iomem_clear_status(struct applesmc_device *smc) +{ + if (ioread8(smc->iomem_base + APPLESMC_IOMEM_KEY_STATUS)) + iowrite8(0, smc->iomem_base + APPLESMC_IOMEM_KEY_STATUS); +} + +static int iomem_wait_read(struct applesmc_device *smc) +{ + u8 status; + int us; + int i; + + us = APPLESMC_MIN_WAIT; + for (i = 0; i < 24 ; i++) { + status = ioread8(smc->iomem_base + APPLESMC_IOMEM_KEY_STATUS); + if (status & 0x20) + return 0; + usleep_range(us, us * 2); + if (i > 9) + us <<= 1; + } + + dev_warn(smc->ldev, "%s... timeout\n", __func__); + return -EIO; +} + +static int iomem_read_smc(struct applesmc_device *smc, u8 cmd, const char *key, + u8 *buffer, u8 len) +{ + u8 err, remote_len; + u32 key_int = *((u32 *) key); + + iomem_clear_status(smc); + iowrite32(key_int, smc->iomem_base + APPLESMC_IOMEM_KEY_NAME); + iowrite32(0, smc->iomem_base + APPLESMC_IOMEM_KEY_SMC_ID); + iowrite32(cmd, smc->iomem_base + APPLESMC_IOMEM_KEY_CMD); + + if (iomem_wait_read(smc)) + return -EIO; + + err = ioread8(smc->iomem_base + APPLESMC_IOMEM_KEY_CMD); + if (err != 0) { + dev_warn(smc->ldev, "read_smc_mmio(%x %8x/%.4s) failed: %u\n", + cmd, key_int, key, err); + return -EIO; + } + + if (cmd == APPLESMC_READ_CMD) { + remote_len = ioread8(smc->iomem_base + APPLESMC_IOMEM_KEY_DATA_LEN); + if (remote_len != len) { + dev_warn(smc->ldev, + "read_smc_mmio(%x %8x/%.4s) failed: buffer length mismatch (remote = %u, requested = %u)\n", + cmd, key_int, key, remote_len, len); + return -EINVAL; + } + } else { + remote_len = len; + } + + memcpy_fromio(buffer, smc->iomem_base + APPLESMC_IOMEM_KEY_DATA, + remote_len); + + dev_dbg(smc->ldev, "read_smc_mmio(%x %8x/%.4s): buflen=%u reslen=%u\n", + cmd, key_int, key, len, remote_len); + print_hex_dump_bytes("read_smc_mmio(): ", DUMP_PREFIX_NONE, buffer, remote_len); + return 0; +} + +static int iomem_get_smc_key_type(struct applesmc_device *smc, const char *key, + struct applesmc_entry *e) +{ + u8 err; + u8 cmd = APPLESMC_GET_KEY_TYPE_CMD; + u32 key_int = *((u32 *) key); + + iomem_clear_status(smc); + iowrite32(key_int, smc->iomem_base + APPLESMC_IOMEM_KEY_NAME); + iowrite32(0, smc->iomem_base + APPLESMC_IOMEM_KEY_SMC_ID); + iowrite32(cmd, smc->iomem_base + APPLESMC_IOMEM_KEY_CMD); + + if (iomem_wait_read(smc)) + return -EIO; + + err = ioread8(smc->iomem_base + APPLESMC_IOMEM_KEY_CMD); + if (err != 0) { + dev_warn(smc->ldev, "get_smc_key_type_mmio(%.4s) failed: %u\n", key, err); + return -EIO; + } + + e->len = ioread8(smc->iomem_base + APPLESMC_IOMEM_KEY_TYPE_DATA_LEN); + *((uint32_t *) e->type) = ioread32( + smc->iomem_base + APPLESMC_IOMEM_KEY_TYPE_CODE); + e->flags = ioread8(smc->iomem_base + APPLESMC_IOMEM_KEY_TYPE_FLAGS); + + dev_dbg(smc->ldev, "get_smc_key_type_mmio(%.4s): len=%u type=%.4s flags=%x\n", + key, e->len, e->type, e->flags); + return 0; +} + +static int iomem_write_smc(struct applesmc_device *smc, u8 cmd, const char *key, + const u8 *buffer, u8 len) +{ + u8 err; + u32 key_int = *((u32 *) key); + + iomem_clear_status(smc); + iowrite32(key_int, smc->iomem_base + APPLESMC_IOMEM_KEY_NAME); + memcpy_toio(smc->iomem_base + APPLESMC_IOMEM_KEY_DATA, buffer, len); + iowrite32(len, smc->iomem_base + APPLESMC_IOMEM_KEY_DATA_LEN); + iowrite32(0, smc->iomem_base + APPLESMC_IOMEM_KEY_SMC_ID); + iowrite32(cmd, smc->iomem_base + APPLESMC_IOMEM_KEY_CMD); + + if (iomem_wait_read(smc)) + return -EIO; + + err = ioread8(smc->iomem_base + APPLESMC_IOMEM_KEY_CMD); + if (err != 0) { + dev_warn(smc->ldev, "write_smc_mmio(%x %.4s) failed: %u\n", cmd, key, err); + print_hex_dump_bytes("write_smc_mmio(): ", DUMP_PREFIX_NONE, buffer, len); + return -EIO; + } + + dev_dbg(smc->ldev, "write_smc_mmio(%x %.4s): buflen=%u\n", cmd, key, len); + print_hex_dump_bytes("write_smc_mmio(): ", DUMP_PREFIX_NONE, buffer, len); + return 0; +} + + +static int read_smc(struct applesmc_device *smc, const char *key, + u8 *buffer, u8 len) +{ + if (smc->iomem_base_set) + return iomem_read_smc(smc, APPLESMC_READ_CMD, key, buffer, len); + else + return port_read_smc(smc, APPLESMC_READ_CMD, key, buffer, len); +} + +static int write_smc(struct applesmc_device *smc, const char *key, + const u8 *buffer, u8 len) +{ + if (smc->iomem_base_set) + return iomem_write_smc(smc, APPLESMC_WRITE_CMD, key, buffer, len); + else + return port_write_smc(smc, APPLESMC_WRITE_CMD, key, buffer, len); +} + +static int get_smc_key_by_index(struct applesmc_device *smc, + unsigned int index, char *key) +{ + __be32 be; + + be = cpu_to_be32(index); + if (smc->iomem_base_set) + return iomem_read_smc(smc, APPLESMC_GET_KEY_BY_INDEX_CMD, + (const char *) &be, (u8 *) key, 4); + else + return port_read_smc(smc, APPLESMC_GET_KEY_BY_INDEX_CMD, + (const char *) &be, (u8 *) key, 4); +} + +static int get_smc_key_info(struct applesmc_device *smc, const char *key, + struct applesmc_entry *info) +{ + if (smc->iomem_base_set) + return iomem_get_smc_key_type(smc, key, info); + else + return port_get_smc_key_info(smc, key, info); +} + +static int read_register_count(struct applesmc_device *smc, + unsigned int *count) +{ + __be32 be; + int ret; + + ret = read_smc(smc, KEY_COUNT_KEY, (u8 *)&be, 4); + if (ret < 0) + return ret; *count = be32_to_cpu(be); return 0; @@ -338,76 +560,73 @@ static int read_register_count(unsigned int *count) * All functions below are concurrency safe - callers should NOT hold lock. */ -static int applesmc_read_entry(const struct applesmc_entry *entry, - u8 *buf, u8 len) +static int applesmc_read_entry(struct applesmc_device *smc, + const struct applesmc_entry *entry, u8 *buf, u8 len) { int ret; if (entry->len != len) return -EINVAL; - mutex_lock(&smcreg.mutex); - ret = read_smc(APPLESMC_READ_CMD, entry->key, buf, len); - mutex_unlock(&smcreg.mutex); + mutex_lock(&smc->reg.mutex); + ret = read_smc(smc, entry->key, buf, len); + mutex_unlock(&smc->reg.mutex); return ret; } -static int applesmc_write_entry(const struct applesmc_entry *entry, - const u8 *buf, u8 len) +static int applesmc_write_entry(struct applesmc_device *smc, + const struct applesmc_entry *entry, const u8 *buf, u8 len) { int ret; if (entry->len != len) return -EINVAL; - mutex_lock(&smcreg.mutex); - ret = write_smc(APPLESMC_WRITE_CMD, entry->key, buf, len); - mutex_unlock(&smcreg.mutex); + mutex_lock(&smc->reg.mutex); + ret = write_smc(smc, entry->key, buf, len); + mutex_unlock(&smc->reg.mutex); return ret; } -static const struct applesmc_entry *applesmc_get_entry_by_index(int index) +static const struct applesmc_entry *applesmc_get_entry_by_index( + struct applesmc_device *smc, int index) { - struct applesmc_entry *cache = &smcreg.cache[index]; - u8 key[4], info[6]; - __be32 be; + struct applesmc_entry *cache = &smc->reg.cache[index]; + char key[4]; int ret = 0; if (cache->valid) return cache; - mutex_lock(&smcreg.mutex); + mutex_lock(&smc->reg.mutex); if (cache->valid) goto out; - be = cpu_to_be32(index); - ret = read_smc(APPLESMC_GET_KEY_BY_INDEX_CMD, (u8 *)&be, key, 4); + ret = get_smc_key_by_index(smc, index, key); if (ret) goto out; - ret = read_smc(APPLESMC_GET_KEY_TYPE_CMD, key, info, 6); + memcpy(cache->key, key, 4); + + ret = get_smc_key_info(smc, key, cache); if (ret) goto out; - - memcpy(cache->key, key, 4); - cache->len = info[0]; - memcpy(cache->type, &info[1], 4); - cache->flags = info[5]; cache->valid = true; out: - mutex_unlock(&smcreg.mutex); + mutex_unlock(&smc->reg.mutex); if (ret) return ERR_PTR(ret); return cache; } -static int applesmc_get_lower_bound(unsigned int *lo, const char *key) +static int applesmc_get_lower_bound(struct applesmc_device *smc, + unsigned int *lo, const char *key) { - int begin = 0, end = smcreg.key_count; + int begin = 0, end = smc->reg.key_count; const struct applesmc_entry *entry; while (begin != end) { int middle = begin + (end - begin) / 2; - entry = applesmc_get_entry_by_index(middle); + entry = applesmc_get_entry_by_index(smc, middle); if (IS_ERR(entry)) { *lo = 0; return PTR_ERR(entry); @@ -422,16 +641,17 @@ static int applesmc_get_lower_bound(unsigned int *lo, const char *key) return 0; } -static int applesmc_get_upper_bound(unsigned int *hi, const char *key) +static int applesmc_get_upper_bound(struct applesmc_device *smc, + unsigned int *hi, const char *key) { - int begin = 0, end = smcreg.key_count; + int begin = 0, end = smc->reg.key_count; const struct applesmc_entry *entry; while (begin != end) { int middle = begin + (end - begin) / 2; - entry = applesmc_get_entry_by_index(middle); + entry = applesmc_get_entry_by_index(smc, middle); if (IS_ERR(entry)) { - *hi = smcreg.key_count; + *hi = smc->reg.key_count; return PTR_ERR(entry); } if (strcmp(key, entry->key) < 0) @@ -444,50 +664,54 @@ static int applesmc_get_upper_bound(unsigned int *hi, const char *key) return 0; } -static const struct applesmc_entry *applesmc_get_entry_by_key(const char *key) +static const struct applesmc_entry *applesmc_get_entry_by_key( + struct applesmc_device *smc, const char *key) { int begin, end; int ret; - ret = applesmc_get_lower_bound(&begin, key); + ret = applesmc_get_lower_bound(smc, &begin, key); if (ret) return ERR_PTR(ret); - ret = applesmc_get_upper_bound(&end, key); + ret = applesmc_get_upper_bound(smc, &end, key); if (ret) return ERR_PTR(ret); if (end - begin != 1) return ERR_PTR(-EINVAL); - return applesmc_get_entry_by_index(begin); + return applesmc_get_entry_by_index(smc, begin); } -static int applesmc_read_key(const char *key, u8 *buffer, u8 len) +static int applesmc_read_key(struct applesmc_device *smc, + const char *key, u8 *buffer, u8 len) { const struct applesmc_entry *entry; - entry = applesmc_get_entry_by_key(key); + entry = applesmc_get_entry_by_key(smc, key); if (IS_ERR(entry)) return PTR_ERR(entry); - return applesmc_read_entry(entry, buffer, len); + return applesmc_read_entry(smc, entry, buffer, len); } -static int applesmc_write_key(const char *key, const u8 *buffer, u8 len) +static int applesmc_write_key(struct applesmc_device *smc, + const char *key, const u8 *buffer, u8 len) { const struct applesmc_entry *entry; - entry = applesmc_get_entry_by_key(key); + entry = applesmc_get_entry_by_key(smc, key); if (IS_ERR(entry)) return PTR_ERR(entry); - return applesmc_write_entry(entry, buffer, len); + return applesmc_write_entry(smc, entry, buffer, len); } -static int applesmc_has_key(const char *key, bool *value) +static int applesmc_has_key(struct applesmc_device *smc, + const char *key, bool *value) { const struct applesmc_entry *entry; - entry = applesmc_get_entry_by_key(key); + entry = applesmc_get_entry_by_key(smc, key); if (IS_ERR(entry) && PTR_ERR(entry) != -EINVAL) return PTR_ERR(entry); @@ -498,12 +722,13 @@ static int applesmc_has_key(const char *key, bool *value) /* * applesmc_read_s16 - Read 16-bit signed big endian register */ -static int applesmc_read_s16(const char *key, s16 *value) +static int applesmc_read_s16(struct applesmc_device *smc, + const char *key, s16 *value) { u8 buffer[2]; int ret; - ret = applesmc_read_key(key, buffer, 2); + ret = applesmc_read_key(smc, key, buffer, 2); if (ret) return ret; @@ -511,31 +736,68 @@ static int applesmc_read_s16(const char *key, s16 *value) return 0; } +/** + * applesmc_float_to_u32 - Retrieve the integral part of a float. + * This is needed because Apple made fans use float values in the T2. + * The fractional point is not significantly useful though, and the integral + * part can be easily extracted. + */ +static inline u32 applesmc_float_to_u32(u32 d) +{ + u8 sign = (u8) ((d >> 31) & 1); + s32 exp = (s32) ((d >> 23) & 0xff) - 0x7f; + u32 fr = d & ((1u << 23) - 1); + + if (sign || exp < 0) + return 0; + + return (u32) ((1u << exp) + (fr >> (23 - exp))); +} + +/** + * applesmc_u32_to_float - Convert an u32 into a float. + * See applesmc_float_to_u32 for a rationale. + */ +static inline u32 applesmc_u32_to_float(u32 d) +{ + u32 dc = d, bc = 0, exp; + + if (!d) + return 0; + + while (dc >>= 1) + ++bc; + exp = 0x7f + bc; + + return (u32) ((exp << 23) | + ((d << (23 - (exp - 0x7f))) & ((1u << 23) - 1))); +} /* * applesmc_device_init - initialize the accelerometer. Can sleep. */ -static void applesmc_device_init(void) +static void applesmc_device_init(struct applesmc_device *smc) { int total; u8 buffer[2]; - if (!smcreg.has_accelerometer) + if (!smc->reg.has_accelerometer) return; for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) { - if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) && + if (!applesmc_read_key(smc, MOTION_SENSOR_KEY, buffer, 2) && (buffer[0] != 0x00 || buffer[1] != 0x00)) return; buffer[0] = 0xe0; buffer[1] = 0x00; - applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2); + applesmc_write_key(smc, MOTION_SENSOR_KEY, buffer, 2); msleep(INIT_WAIT_MSECS); } pr_warn("failed to init the device\n"); } -static int applesmc_init_index(struct applesmc_registers *s) +static int applesmc_init_index(struct applesmc_device *smc, + struct applesmc_registers *s) { const struct applesmc_entry *entry; unsigned int i; @@ -548,7 +810,7 @@ static int applesmc_init_index(struct applesmc_registers *s) return -ENOMEM; for (i = s->temp_begin; i < s->temp_end; i++) { - entry = applesmc_get_entry_by_index(i); + entry = applesmc_get_entry_by_index(smc, i); if (IS_ERR(entry)) continue; if (strcmp(entry->type, TEMP_SENSOR_TYPE)) @@ -562,9 +824,9 @@ static int applesmc_init_index(struct applesmc_registers *s) /* * applesmc_init_smcreg_try - Try to initialize register cache. Idempotent. */ -static int applesmc_init_smcreg_try(void) +static int applesmc_init_smcreg_try(struct applesmc_device *smc) { - struct applesmc_registers *s = &smcreg; + struct applesmc_registers *s = &smc->reg; bool left_light_sensor = false, right_light_sensor = false; unsigned int count; u8 tmp[1]; @@ -573,7 +835,7 @@ static int applesmc_init_smcreg_try(void) if (s->init_complete) return 0; - ret = read_register_count(&count); + ret = read_register_count(smc, &count); if (ret) return ret; @@ -590,35 +852,35 @@ static int applesmc_init_smcreg_try(void) if (!s->cache) return -ENOMEM; - ret = applesmc_read_key(FANS_COUNT, tmp, 1); + ret = applesmc_read_key(smc, FANS_COUNT, tmp, 1); if (ret) return ret; s->fan_count = tmp[0]; if (s->fan_count > 10) s->fan_count = 10; - ret = applesmc_get_lower_bound(&s->temp_begin, "T"); + ret = applesmc_get_lower_bound(smc, &s->temp_begin, "T"); if (ret) return ret; - ret = applesmc_get_lower_bound(&s->temp_end, "U"); + ret = applesmc_get_lower_bound(smc, &s->temp_end, "U"); if (ret) return ret; s->temp_count = s->temp_end - s->temp_begin; - ret = applesmc_init_index(s); + ret = applesmc_init_index(smc, s); if (ret) return ret; - ret = applesmc_has_key(LIGHT_SENSOR_LEFT_KEY, &left_light_sensor); + ret = applesmc_has_key(smc, LIGHT_SENSOR_LEFT_KEY, &left_light_sensor); if (ret) return ret; - ret = applesmc_has_key(LIGHT_SENSOR_RIGHT_KEY, &right_light_sensor); + ret = applesmc_has_key(smc, LIGHT_SENSOR_RIGHT_KEY, &right_light_sensor); if (ret) return ret; - ret = applesmc_has_key(MOTION_SENSOR_KEY, &s->has_accelerometer); + ret = applesmc_has_key(smc, MOTION_SENSOR_KEY, &s->has_accelerometer); if (ret) return ret; - ret = applesmc_has_key(BACKLIGHT_KEY, &s->has_key_backlight); + ret = applesmc_has_key(smc, BACKLIGHT_KEY, &s->has_key_backlight); if (ret) return ret; @@ -634,13 +896,13 @@ static int applesmc_init_smcreg_try(void) return 0; } -static void applesmc_destroy_smcreg(void) +static void applesmc_destroy_smcreg(struct applesmc_device *smc) { - kfree(smcreg.index); - smcreg.index = NULL; - kfree(smcreg.cache); - smcreg.cache = NULL; - smcreg.init_complete = false; + kfree(smc->reg.index); + smc->reg.index = NULL; + kfree(smc->reg.cache); + smc->reg.cache = NULL; + smc->reg.init_complete = false; } /* @@ -649,12 +911,12 @@ static void applesmc_destroy_smcreg(void) * Retries until initialization is successful, or the operation times out. * */ -static int applesmc_init_smcreg(void) +static int applesmc_init_smcreg(struct applesmc_device *smc) { int ms, ret; for (ms = 0; ms < INIT_TIMEOUT_MSECS; ms += INIT_WAIT_MSECS) { - ret = applesmc_init_smcreg_try(); + ret = applesmc_init_smcreg_try(smc); if (!ret) { if (ms) pr_info("init_smcreg() took %d ms\n", ms); @@ -663,50 +925,223 @@ static int applesmc_init_smcreg(void) msleep(INIT_WAIT_MSECS); } - applesmc_destroy_smcreg(); + applesmc_destroy_smcreg(smc); return ret; } /* Device model stuff */ -static int applesmc_probe(struct platform_device *dev) + +static int applesmc_init_resources(struct applesmc_device *smc); +static void applesmc_free_resources(struct applesmc_device *smc); +static int applesmc_create_modules(struct applesmc_device *smc); +static void applesmc_destroy_modules(struct applesmc_device *smc); + +static int applesmc_add(struct acpi_device *dev) { + struct applesmc_device *smc; int ret; - ret = applesmc_init_smcreg(); + smc = kzalloc(sizeof(struct applesmc_device), GFP_KERNEL); + if (!smc) + return -ENOMEM; + smc->dev = dev; + smc->ldev = &dev->dev; + mutex_init(&smc->reg.mutex); + + dev_set_drvdata(&dev->dev, smc); + + ret = applesmc_init_resources(smc); if (ret) - return ret; + goto out_mem; + + ret = applesmc_init_smcreg(smc); + if (ret) + goto out_res; + + applesmc_device_init(smc); + + ret = applesmc_create_modules(smc); + if (ret) + goto out_reg; + + return 0; + +out_reg: + applesmc_destroy_smcreg(smc); +out_res: + applesmc_free_resources(smc); +out_mem: + dev_set_drvdata(&dev->dev, NULL); + mutex_destroy(&smc->reg.mutex); + kfree(smc); + + return ret; +} + +static void applesmc_remove(struct acpi_device *dev) +{ + struct applesmc_device *smc = dev_get_drvdata(&dev->dev); + + applesmc_destroy_modules(smc); + applesmc_destroy_smcreg(smc); + applesmc_free_resources(smc); - applesmc_device_init(); + mutex_destroy(&smc->reg.mutex); + kfree(smc); + + return; +} + +static acpi_status applesmc_walk_resources(struct acpi_resource *res, + void *data) +{ + struct applesmc_device *smc = data; + + switch (res->type) { + case ACPI_RESOURCE_TYPE_IO: + if (!smc->port_base_set) { + if (res->data.io.address_length < APPLESMC_NR_PORTS) + return AE_ERROR; + smc->port_base = res->data.io.minimum; + smc->port_base_set = true; + } + return AE_OK; + + case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: + if (!smc->iomem_base_set) { + if (res->data.fixed_memory32.address_length < + APPLESMC_IOMEM_MIN_SIZE) { + dev_warn(smc->ldev, "found iomem but it's too small: %u\n", + res->data.fixed_memory32.address_length); + return AE_OK; + } + smc->iomem_base_addr = res->data.fixed_memory32.address; + smc->iomem_base_size = res->data.fixed_memory32.address_length; + smc->iomem_base_set = true; + } + return AE_OK; + + case ACPI_RESOURCE_TYPE_END_TAG: + if (smc->port_base_set) + return AE_OK; + else + return AE_NOT_FOUND; + + default: + return AE_OK; + } +} + +static int applesmc_try_enable_iomem(struct applesmc_device *smc); + +static int applesmc_init_resources(struct applesmc_device *smc) +{ + int ret; + + ret = acpi_walk_resources(smc->dev->handle, METHOD_NAME__CRS, + applesmc_walk_resources, smc); + if (ACPI_FAILURE(ret)) + return -ENXIO; + + if (!request_region(smc->port_base, APPLESMC_NR_PORTS, "applesmc")) + return -ENXIO; + + if (smc->iomem_base_set) { + if (applesmc_try_enable_iomem(smc)) + smc->iomem_base_set = false; + } + + return 0; +} + +static int applesmc_try_enable_iomem(struct applesmc_device *smc) +{ + u8 test_val, ldkn_version; + + dev_dbg(smc->ldev, "Trying to enable iomem based communication\n"); + smc->iomem_base = ioremap(smc->iomem_base_addr, smc->iomem_base_size); + if (!smc->iomem_base) + goto out; + + /* Apple's driver does this check for some reason */ + test_val = ioread8(smc->iomem_base + APPLESMC_IOMEM_KEY_STATUS); + if (test_val == 0xff) { + dev_warn(smc->ldev, + "iomem enable failed: initial status is 0xff (is %x)\n", + test_val); + goto out_iomem; + } + + if (read_smc(smc, "LDKN", &ldkn_version, 1)) { + dev_warn(smc->ldev, "iomem enable failed: ldkn read failed\n"); + goto out_iomem; + } + + if (ldkn_version < 2) { + dev_warn(smc->ldev, + "iomem enable failed: ldkn version %u is less than minimum (2)\n", + ldkn_version); + goto out_iomem; + } return 0; + +out_iomem: + iounmap(smc->iomem_base); + +out: + return -ENXIO; +} + +static void applesmc_free_resources(struct applesmc_device *smc) +{ + if (smc->iomem_base_set) + iounmap(smc->iomem_base); + release_region(smc->port_base, APPLESMC_NR_PORTS); } /* Synchronize device with memorized backlight state */ static int applesmc_pm_resume(struct device *dev) { - if (smcreg.has_key_backlight) - applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2); + struct applesmc_device *smc = dev_get_drvdata(dev); + + if (smc->reg.has_key_backlight) + applesmc_write_key(smc, BACKLIGHT_KEY, smc->backlight_state, 2); + return 0; } /* Reinitialize device on resume from hibernation */ static int applesmc_pm_restore(struct device *dev) { - applesmc_device_init(); + struct applesmc_device *smc = dev_get_drvdata(dev); + + applesmc_device_init(smc); + return applesmc_pm_resume(dev); } +static const struct acpi_device_id applesmc_ids[] = { + {"APP0001", 0}, + {"", 0}, +}; + static const struct dev_pm_ops applesmc_pm_ops = { .resume = applesmc_pm_resume, .restore = applesmc_pm_restore, }; -static struct platform_driver applesmc_driver = { - .probe = applesmc_probe, - .driver = { - .name = "applesmc", - .pm = &applesmc_pm_ops, +static struct acpi_driver applesmc_driver = { + .name = "applesmc", + .class = "applesmc", + .ids = applesmc_ids, + .ops = { + .add = applesmc_add, + .remove = applesmc_remove + }, + .drv = { + .pm = &applesmc_pm_ops }, }; @@ -714,25 +1149,26 @@ static struct platform_driver applesmc_driver = { * applesmc_calibrate - Set our "resting" values. Callers must * hold applesmc_lock. */ -static void applesmc_calibrate(void) +static void applesmc_calibrate(struct applesmc_device *smc) { - applesmc_read_s16(MOTION_SENSOR_X_KEY, &rest_x); - applesmc_read_s16(MOTION_SENSOR_Y_KEY, &rest_y); - rest_x = -rest_x; + applesmc_read_s16(smc, MOTION_SENSOR_X_KEY, &smc->rest_x); + applesmc_read_s16(smc, MOTION_SENSOR_Y_KEY, &smc->rest_y); + smc->rest_x = -smc->rest_x; } static void applesmc_idev_poll(struct input_dev *idev) { + struct applesmc_device *smc = dev_get_drvdata(&idev->dev); s16 x, y; - if (applesmc_read_s16(MOTION_SENSOR_X_KEY, &x)) + if (applesmc_read_s16(smc, MOTION_SENSOR_X_KEY, &x)) return; - if (applesmc_read_s16(MOTION_SENSOR_Y_KEY, &y)) + if (applesmc_read_s16(smc, MOTION_SENSOR_Y_KEY, &y)) return; x = -x; - input_report_abs(idev, ABS_X, x - rest_x); - input_report_abs(idev, ABS_Y, y - rest_y); + input_report_abs(idev, ABS_X, x - smc->rest_x); + input_report_abs(idev, ABS_Y, y - smc->rest_y); input_sync(idev); } @@ -747,16 +1183,17 @@ static ssize_t applesmc_name_show(struct device *dev, static ssize_t applesmc_position_show(struct device *dev, struct device_attribute *attr, char *buf) { + struct applesmc_device *smc = dev_get_drvdata(dev); int ret; s16 x, y, z; - ret = applesmc_read_s16(MOTION_SENSOR_X_KEY, &x); + ret = applesmc_read_s16(smc, MOTION_SENSOR_X_KEY, &x); if (ret) goto out; - ret = applesmc_read_s16(MOTION_SENSOR_Y_KEY, &y); + ret = applesmc_read_s16(smc, MOTION_SENSOR_Y_KEY, &y); if (ret) goto out; - ret = applesmc_read_s16(MOTION_SENSOR_Z_KEY, &z); + ret = applesmc_read_s16(smc, MOTION_SENSOR_Z_KEY, &z); if (ret) goto out; @@ -770,6 +1207,7 @@ static ssize_t applesmc_position_show(struct device *dev, static ssize_t applesmc_light_show(struct device *dev, struct device_attribute *attr, char *sysfsbuf) { + struct applesmc_device *smc = dev_get_drvdata(dev); const struct applesmc_entry *entry; static int data_length; int ret; @@ -777,7 +1215,7 @@ static ssize_t applesmc_light_show(struct device *dev, u8 buffer[10]; if (!data_length) { - entry = applesmc_get_entry_by_key(LIGHT_SENSOR_LEFT_KEY); + entry = applesmc_get_entry_by_key(smc, LIGHT_SENSOR_LEFT_KEY); if (IS_ERR(entry)) return PTR_ERR(entry); if (entry->len > 10) @@ -786,7 +1224,7 @@ static ssize_t applesmc_light_show(struct device *dev, pr_info("light sensor data length set to %d\n", data_length); } - ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, data_length); + ret = applesmc_read_key(smc, LIGHT_SENSOR_LEFT_KEY, buffer, data_length); if (ret) goto out; /* newer macbooks report a single 10-bit bigendian value */ @@ -796,7 +1234,7 @@ static ssize_t applesmc_light_show(struct device *dev, } left = buffer[2]; - ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, data_length); + ret = applesmc_read_key(smc, LIGHT_SENSOR_RIGHT_KEY, buffer, data_length); if (ret) goto out; right = buffer[2]; @@ -812,7 +1250,8 @@ static ssize_t applesmc_light_show(struct device *dev, static ssize_t applesmc_show_sensor_label(struct device *dev, struct device_attribute *devattr, char *sysfsbuf) { - const char *key = smcreg.index[to_index(devattr)]; + struct applesmc_device *smc = dev_get_drvdata(dev); + const char *key = smc->reg.index[to_index(devattr)]; return sysfs_emit(sysfsbuf, "%s\n", key); } @@ -821,12 +1260,13 @@ static ssize_t applesmc_show_sensor_label(struct device *dev, static ssize_t applesmc_show_temperature(struct device *dev, struct device_attribute *devattr, char *sysfsbuf) { - const char *key = smcreg.index[to_index(devattr)]; + struct applesmc_device *smc = dev_get_drvdata(dev); + const char *key = smc->reg.index[to_index(devattr)]; int ret; s16 value; int temp; - ret = applesmc_read_s16(key, &value); + ret = applesmc_read_s16(smc, key, &value); if (ret) return ret; @@ -838,6 +1278,8 @@ static ssize_t applesmc_show_temperature(struct device *dev, static ssize_t applesmc_show_fan_speed(struct device *dev, struct device_attribute *attr, char *sysfsbuf) { + struct applesmc_device *smc = dev_get_drvdata(dev); + const struct applesmc_entry *entry; int ret; unsigned int speed = 0; char newkey[5]; @@ -846,11 +1288,21 @@ static ssize_t applesmc_show_fan_speed(struct device *dev, scnprintf(newkey, sizeof(newkey), fan_speed_fmt[to_option(attr)], to_index(attr)); - ret = applesmc_read_key(newkey, buffer, 2); + entry = applesmc_get_entry_by_key(smc, newkey); + if (IS_ERR(entry)) + return PTR_ERR(entry); + + if (!strcmp(entry->type, FLOAT_TYPE)) { + ret = applesmc_read_entry(smc, entry, (u8 *) &speed, 4); + speed = applesmc_float_to_u32(speed); + } else { + ret = applesmc_read_entry(smc, entry, buffer, 2); + speed = ((buffer[0] << 8 | buffer[1]) >> 2); + } + if (ret) return ret; - speed = ((buffer[0] << 8 | buffer[1]) >> 2); return sysfs_emit(sysfsbuf, "%u\n", speed); } @@ -858,6 +1310,8 @@ static ssize_t applesmc_store_fan_speed(struct device *dev, struct device_attribute *attr, const char *sysfsbuf, size_t count) { + struct applesmc_device *smc = dev_get_drvdata(dev); + const struct applesmc_entry *entry; int ret; unsigned long speed; char newkey[5]; @@ -869,9 +1323,18 @@ static ssize_t applesmc_store_fan_speed(struct device *dev, scnprintf(newkey, sizeof(newkey), fan_speed_fmt[to_option(attr)], to_index(attr)); - buffer[0] = (speed >> 6) & 0xff; - buffer[1] = (speed << 2) & 0xff; - ret = applesmc_write_key(newkey, buffer, 2); + entry = applesmc_get_entry_by_key(smc, newkey); + if (IS_ERR(entry)) + return PTR_ERR(entry); + + if (!strcmp(entry->type, FLOAT_TYPE)) { + speed = applesmc_u32_to_float(speed); + ret = applesmc_write_entry(smc, entry, (u8 *) &speed, 4); + } else { + buffer[0] = (speed >> 6) & 0xff; + buffer[1] = (speed << 2) & 0xff; + ret = applesmc_write_key(smc, newkey, buffer, 2); + } if (ret) return ret; @@ -882,15 +1345,30 @@ static ssize_t applesmc_store_fan_speed(struct device *dev, static ssize_t applesmc_show_fan_manual(struct device *dev, struct device_attribute *attr, char *sysfsbuf) { + struct applesmc_device *smc = dev_get_drvdata(dev); int ret; u16 manual = 0; u8 buffer[2]; + char newkey[5]; + bool has_newkey = false; + + scnprintf(newkey, sizeof(newkey), FAN_MANUAL_FMT, to_index(attr)); + + ret = applesmc_has_key(smc, newkey, &has_newkey); + if (ret) + return ret; + + if (has_newkey) { + ret = applesmc_read_key(smc, newkey, buffer, 1); + manual = buffer[0]; + } else { + ret = applesmc_read_key(smc, FANS_MANUAL, buffer, 2); + manual = ((buffer[0] << 8 | buffer[1]) >> to_index(attr)) & 0x01; + } - ret = applesmc_read_key(FANS_MANUAL, buffer, 2); if (ret) return ret; - manual = ((buffer[0] << 8 | buffer[1]) >> to_index(attr)) & 0x01; return sysfs_emit(sysfsbuf, "%d\n", manual); } @@ -898,29 +1376,42 @@ static ssize_t applesmc_store_fan_manual(struct device *dev, struct device_attribute *attr, const char *sysfsbuf, size_t count) { + struct applesmc_device *smc = dev_get_drvdata(dev); int ret; u8 buffer[2]; + char newkey[5]; + bool has_newkey = false; unsigned long input; u16 val; if (kstrtoul(sysfsbuf, 10, &input) < 0) return -EINVAL; - ret = applesmc_read_key(FANS_MANUAL, buffer, 2); + scnprintf(newkey, sizeof(newkey), FAN_MANUAL_FMT, to_index(attr)); + + ret = applesmc_has_key(smc, newkey, &has_newkey); if (ret) - goto out; + return ret; - val = (buffer[0] << 8 | buffer[1]); + if (has_newkey) { + buffer[0] = input & 1; + ret = applesmc_write_key(smc, newkey, buffer, 1); + } else { + ret = applesmc_read_key(smc, FANS_MANUAL, buffer, 2); + val = (buffer[0] << 8 | buffer[1]); + if (ret) + goto out; - if (input) - val = val | (0x01 << to_index(attr)); - else - val = val & ~(0x01 << to_index(attr)); + if (input) + val = val | (0x01 << to_index(attr)); + else + val = val & ~(0x01 << to_index(attr)); - buffer[0] = (val >> 8) & 0xFF; - buffer[1] = val & 0xFF; + buffer[0] = (val >> 8) & 0xFF; + buffer[1] = val & 0xFF; - ret = applesmc_write_key(FANS_MANUAL, buffer, 2); + ret = applesmc_write_key(smc, FANS_MANUAL, buffer, 2); + } out: if (ret) @@ -932,13 +1423,14 @@ static ssize_t applesmc_store_fan_manual(struct device *dev, static ssize_t applesmc_show_fan_position(struct device *dev, struct device_attribute *attr, char *sysfsbuf) { + struct applesmc_device *smc = dev_get_drvdata(dev); int ret; char newkey[5]; u8 buffer[17]; scnprintf(newkey, sizeof(newkey), FAN_ID_FMT, to_index(attr)); - ret = applesmc_read_key(newkey, buffer, 16); + ret = applesmc_read_key(smc, newkey, buffer, 16); buffer[16] = 0; if (ret) @@ -950,43 +1442,79 @@ static ssize_t applesmc_show_fan_position(struct device *dev, static ssize_t applesmc_calibrate_show(struct device *dev, struct device_attribute *attr, char *sysfsbuf) { - return sysfs_emit(sysfsbuf, "(%d,%d)\n", rest_x, rest_y); + struct applesmc_device *smc = dev_get_drvdata(dev); + + return sysfs_emit(sysfsbuf, "(%d,%d)\n", smc->rest_x, smc->rest_y); } static ssize_t applesmc_calibrate_store(struct device *dev, struct device_attribute *attr, const char *sysfsbuf, size_t count) { - applesmc_calibrate(); + struct applesmc_device *smc = dev_get_drvdata(dev); + + applesmc_calibrate(smc); return count; } static void applesmc_backlight_set(struct work_struct *work) { - applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2); + struct applesmc_device *smc = container_of(work, struct applesmc_device, backlight_work); + + applesmc_write_key(smc, BACKLIGHT_KEY, smc->backlight_state, 2); } -static DECLARE_WORK(backlight_work, &applesmc_backlight_set); static void applesmc_brightness_set(struct led_classdev *led_cdev, enum led_brightness value) { + struct applesmc_device *smc = dev_get_drvdata(led_cdev->dev); int ret; - backlight_state[0] = value; - ret = queue_work(applesmc_led_wq, &backlight_work); + smc->backlight_state[0] = value; + ret = queue_work(smc->backlight_wq, &smc->backlight_work); if (debug && (!ret)) dev_dbg(led_cdev->dev, "work was already on the queue.\n"); } +static ssize_t applesmc_BCLM_store(struct device *dev, + struct device_attribute *attr, char *sysfsbuf, size_t count) +{ + struct applesmc_device *smc = dev_get_drvdata(dev); + u8 val; + + if (kstrtou8(sysfsbuf, 10, &val) < 0) + return -EINVAL; + + if (val < 0 || val > 100) + return -EINVAL; + + if (applesmc_write_key(smc, "BCLM", &val, 1)) + return -ENODEV; + return count; +} + +static ssize_t applesmc_BCLM_show(struct device *dev, + struct device_attribute *attr, char *sysfsbuf) +{ + struct applesmc_device *smc = dev_get_drvdata(dev); + u8 val; + + if (applesmc_read_key(smc, "BCLM", &val, 1)) + return -ENODEV; + + return sysfs_emit(sysfsbuf, "%d\n", val); +} + static ssize_t applesmc_key_count_show(struct device *dev, struct device_attribute *attr, char *sysfsbuf) { + struct applesmc_device *smc = dev_get_drvdata(dev); int ret; u8 buffer[4]; u32 count; - ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4); + ret = applesmc_read_key(smc, KEY_COUNT_KEY, buffer, 4); if (ret) return ret; @@ -998,13 +1526,14 @@ static ssize_t applesmc_key_count_show(struct device *dev, static ssize_t applesmc_key_at_index_read_show(struct device *dev, struct device_attribute *attr, char *sysfsbuf) { + struct applesmc_device *smc = dev_get_drvdata(dev); const struct applesmc_entry *entry; int ret; - entry = applesmc_get_entry_by_index(key_at_index); + entry = applesmc_get_entry_by_index(smc, smc->key_at_index); if (IS_ERR(entry)) return PTR_ERR(entry); - ret = applesmc_read_entry(entry, sysfsbuf, entry->len); + ret = applesmc_read_entry(smc, entry, sysfsbuf, entry->len); if (ret) return ret; @@ -1014,9 +1543,10 @@ static ssize_t applesmc_key_at_index_read_show(struct device *dev, static ssize_t applesmc_key_at_index_data_length_show(struct device *dev, struct device_attribute *attr, char *sysfsbuf) { + struct applesmc_device *smc = dev_get_drvdata(dev); const struct applesmc_entry *entry; - entry = applesmc_get_entry_by_index(key_at_index); + entry = applesmc_get_entry_by_index(smc, smc->key_at_index); if (IS_ERR(entry)) return PTR_ERR(entry); @@ -1026,9 +1556,10 @@ static ssize_t applesmc_key_at_index_data_length_show(struct device *dev, static ssize_t applesmc_key_at_index_type_show(struct device *dev, struct device_attribute *attr, char *sysfsbuf) { + struct applesmc_device *smc = dev_get_drvdata(dev); const struct applesmc_entry *entry; - entry = applesmc_get_entry_by_index(key_at_index); + entry = applesmc_get_entry_by_index(smc, smc->key_at_index); if (IS_ERR(entry)) return PTR_ERR(entry); @@ -1038,9 +1569,10 @@ static ssize_t applesmc_key_at_index_type_show(struct device *dev, static ssize_t applesmc_key_at_index_name_show(struct device *dev, struct device_attribute *attr, char *sysfsbuf) { + struct applesmc_device *smc = dev_get_drvdata(dev); const struct applesmc_entry *entry; - entry = applesmc_get_entry_by_index(key_at_index); + entry = applesmc_get_entry_by_index(smc, smc->key_at_index); if (IS_ERR(entry)) return PTR_ERR(entry); @@ -1050,28 +1582,25 @@ static ssize_t applesmc_key_at_index_name_show(struct device *dev, static ssize_t applesmc_key_at_index_show(struct device *dev, struct device_attribute *attr, char *sysfsbuf) { - return sysfs_emit(sysfsbuf, "%d\n", key_at_index); + struct applesmc_device *smc = dev_get_drvdata(dev); + + return sysfs_emit(sysfsbuf, "%d\n", smc->key_at_index); } static ssize_t applesmc_key_at_index_store(struct device *dev, struct device_attribute *attr, const char *sysfsbuf, size_t count) { + struct applesmc_device *smc = dev_get_drvdata(dev); unsigned long newkey; if (kstrtoul(sysfsbuf, 10, &newkey) < 0 - || newkey >= smcreg.key_count) + || newkey >= smc->reg.key_count) return -EINVAL; - key_at_index = newkey; + smc->key_at_index = newkey; return count; } -static struct led_classdev applesmc_backlight = { - .name = "smc::kbd_backlight", - .default_trigger = "nand-disk", - .brightness_set = applesmc_brightness_set, -}; - static struct applesmc_node_group info_group[] = { { "name", applesmc_name_show }, { "key_count", applesmc_key_count_show }, @@ -1111,19 +1640,25 @@ static struct applesmc_node_group temp_group[] = { { } }; +static struct applesmc_node_group BCLM_group[] = { + { "battery_charge_limit", applesmc_BCLM_show, applesmc_BCLM_store }, + { } +}; + /* Module stuff */ /* * applesmc_destroy_nodes - remove files and free associated memory */ -static void applesmc_destroy_nodes(struct applesmc_node_group *groups) +static void applesmc_destroy_nodes(struct applesmc_device *smc, + struct applesmc_node_group *groups) { struct applesmc_node_group *grp; struct applesmc_dev_attr *node; for (grp = groups; grp->nodes; grp++) { for (node = grp->nodes; node->sda.dev_attr.attr.name; node++) - sysfs_remove_file(&pdev->dev.kobj, + sysfs_remove_file(&smc->dev->dev.kobj, &node->sda.dev_attr.attr); kfree(grp->nodes); grp->nodes = NULL; @@ -1133,7 +1668,8 @@ static void applesmc_destroy_nodes(struct applesmc_node_group *groups) /* * applesmc_create_nodes - create a two-dimensional group of sysfs files */ -static int applesmc_create_nodes(struct applesmc_node_group *groups, int num) +static int applesmc_create_nodes(struct applesmc_device *smc, + struct applesmc_node_group *groups, int num) { struct applesmc_node_group *grp; struct applesmc_dev_attr *node; @@ -1157,7 +1693,7 @@ static int applesmc_create_nodes(struct applesmc_node_group *groups, int num) sysfs_attr_init(attr); attr->name = node->name; attr->mode = 0444 | (grp->store ? 0200 : 0); - ret = sysfs_create_file(&pdev->dev.kobj, attr); + ret = sysfs_create_file(&smc->dev->dev.kobj, attr); if (ret) { attr->name = NULL; goto out; @@ -1167,57 +1703,56 @@ static int applesmc_create_nodes(struct applesmc_node_group *groups, int num) return 0; out: - applesmc_destroy_nodes(groups); + applesmc_destroy_nodes(smc, groups); return ret; } /* Create accelerometer resources */ -static int applesmc_create_accelerometer(void) +static int applesmc_create_accelerometer(struct applesmc_device *smc) { int ret; - - if (!smcreg.has_accelerometer) + if (!smc->reg.has_accelerometer) return 0; - ret = applesmc_create_nodes(accelerometer_group, 1); + ret = applesmc_create_nodes(smc, accelerometer_group, 1); if (ret) goto out; - applesmc_idev = input_allocate_device(); - if (!applesmc_idev) { + smc->idev = input_allocate_device(); + if (!smc->idev) { ret = -ENOMEM; goto out_sysfs; } /* initial calibrate for the input device */ - applesmc_calibrate(); + applesmc_calibrate(smc); /* initialize the input device */ - applesmc_idev->name = "applesmc"; - applesmc_idev->id.bustype = BUS_HOST; - applesmc_idev->dev.parent = &pdev->dev; - input_set_abs_params(applesmc_idev, ABS_X, + smc->idev->name = "applesmc"; + smc->idev->id.bustype = BUS_HOST; + smc->idev->dev.parent = &smc->dev->dev; + input_set_abs_params(smc->idev, ABS_X, -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); - input_set_abs_params(applesmc_idev, ABS_Y, + input_set_abs_params(smc->idev, ABS_Y, -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); - ret = input_setup_polling(applesmc_idev, applesmc_idev_poll); + ret = input_setup_polling(smc->idev, applesmc_idev_poll); if (ret) goto out_idev; - input_set_poll_interval(applesmc_idev, APPLESMC_POLL_INTERVAL); + input_set_poll_interval(smc->idev, APPLESMC_POLL_INTERVAL); - ret = input_register_device(applesmc_idev); + ret = input_register_device(smc->idev); if (ret) goto out_idev; return 0; out_idev: - input_free_device(applesmc_idev); + input_free_device(smc->idev); out_sysfs: - applesmc_destroy_nodes(accelerometer_group); + applesmc_destroy_nodes(smc, accelerometer_group); out: pr_warn("driver init failed (ret=%d)!\n", ret); @@ -1225,44 +1760,55 @@ static int applesmc_create_accelerometer(void) } /* Release all resources used by the accelerometer */ -static void applesmc_release_accelerometer(void) +static void applesmc_release_accelerometer(struct applesmc_device *smc) { - if (!smcreg.has_accelerometer) + if (!smc->reg.has_accelerometer) return; - input_unregister_device(applesmc_idev); - applesmc_destroy_nodes(accelerometer_group); + input_unregister_device(smc->idev); + applesmc_destroy_nodes(smc, accelerometer_group); } -static int applesmc_create_light_sensor(void) +static int applesmc_create_light_sensor(struct applesmc_device *smc) { - if (!smcreg.num_light_sensors) + if (!smc->reg.num_light_sensors) return 0; - return applesmc_create_nodes(light_sensor_group, 1); + return applesmc_create_nodes(smc, light_sensor_group, 1); } -static void applesmc_release_light_sensor(void) +static void applesmc_release_light_sensor(struct applesmc_device *smc) { - if (!smcreg.num_light_sensors) + if (!smc->reg.num_light_sensors) return; - applesmc_destroy_nodes(light_sensor_group); + applesmc_destroy_nodes(smc, light_sensor_group); } -static int applesmc_create_key_backlight(void) +static int applesmc_create_key_backlight(struct applesmc_device *smc) { - if (!smcreg.has_key_backlight) + int ret; + + if (!smc->reg.has_key_backlight) return 0; - applesmc_led_wq = create_singlethread_workqueue("applesmc-led"); - if (!applesmc_led_wq) + smc->backlight_wq = create_singlethread_workqueue("applesmc-led"); + if (!smc->backlight_wq) return -ENOMEM; - return led_classdev_register(&pdev->dev, &applesmc_backlight); + + INIT_WORK(&smc->backlight_work, applesmc_backlight_set); + smc->backlight_dev.name = "smc::kbd_backlight"; + smc->backlight_dev.default_trigger = "nand-disk"; + smc->backlight_dev.brightness_set = applesmc_brightness_set; + ret = led_classdev_register(&smc->dev->dev, &smc->backlight_dev); + if (ret) + destroy_workqueue(smc->backlight_wq); + + return ret; } -static void applesmc_release_key_backlight(void) +static void applesmc_release_key_backlight(struct applesmc_device *smc) { - if (!smcreg.has_key_backlight) + if (!smc->reg.has_key_backlight) return; - led_classdev_unregister(&applesmc_backlight); - destroy_workqueue(applesmc_led_wq); + led_classdev_unregister(&smc->backlight_dev); + destroy_workqueue(smc->backlight_wq); } static int applesmc_dmi_match(const struct dmi_system_id *id) @@ -1291,6 +1837,10 @@ static const struct dmi_system_id applesmc_whitelist[] __initconst = { DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), DMI_MATCH(DMI_PRODUCT_NAME, "Macmini") }, }, + { applesmc_dmi_match, "Apple iMacPro", { + DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), + DMI_MATCH(DMI_PRODUCT_NAME, "iMacPro") }, + }, { applesmc_dmi_match, "Apple MacPro", { DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), DMI_MATCH(DMI_PRODUCT_NAME, "MacPro") }, @@ -1306,90 +1856,91 @@ static const struct dmi_system_id applesmc_whitelist[] __initconst = { { .ident = NULL } }; -static int __init applesmc_init(void) +static int applesmc_create_modules(struct applesmc_device *smc) { int ret; - if (!dmi_check_system(applesmc_whitelist)) { - pr_warn("supported laptop not found!\n"); - ret = -ENODEV; - goto out; - } - - if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS, - "applesmc")) { - ret = -ENXIO; - goto out; - } - - ret = platform_driver_register(&applesmc_driver); - if (ret) - goto out_region; - - pdev = platform_device_register_simple("applesmc", APPLESMC_DATA_PORT, - NULL, 0); - if (IS_ERR(pdev)) { - ret = PTR_ERR(pdev); - goto out_driver; - } - - /* create register cache */ - ret = applesmc_init_smcreg(); + ret = applesmc_create_nodes(smc, info_group, 1); if (ret) - goto out_device; - - ret = applesmc_create_nodes(info_group, 1); + goto out; + ret = applesmc_create_nodes(smc, BCLM_group, 1); if (ret) - goto out_smcreg; + goto out_info; - ret = applesmc_create_nodes(fan_group, smcreg.fan_count); + ret = applesmc_create_nodes(smc, fan_group, smc->reg.fan_count); if (ret) - goto out_info; + goto out_bclm; - ret = applesmc_create_nodes(temp_group, smcreg.index_count); + ret = applesmc_create_nodes(smc, temp_group, smc->reg.index_count); if (ret) goto out_fans; - ret = applesmc_create_accelerometer(); + ret = applesmc_create_accelerometer(smc); if (ret) goto out_temperature; - ret = applesmc_create_light_sensor(); + ret = applesmc_create_light_sensor(smc); if (ret) goto out_accelerometer; - ret = applesmc_create_key_backlight(); + ret = applesmc_create_key_backlight(smc); if (ret) goto out_light_sysfs; - hwmon_dev = hwmon_device_register(&pdev->dev); - if (IS_ERR(hwmon_dev)) { - ret = PTR_ERR(hwmon_dev); + smc->hwmon_dev = hwmon_device_register(&smc->dev->dev); + if (IS_ERR(smc->hwmon_dev)) { + ret = PTR_ERR(smc->hwmon_dev); goto out_light_ledclass; } return 0; out_light_ledclass: - applesmc_release_key_backlight(); + applesmc_release_key_backlight(smc); out_light_sysfs: - applesmc_release_light_sensor(); + applesmc_release_light_sensor(smc); out_accelerometer: - applesmc_release_accelerometer(); + applesmc_release_accelerometer(smc); out_temperature: - applesmc_destroy_nodes(temp_group); + applesmc_destroy_nodes(smc, temp_group); out_fans: - applesmc_destroy_nodes(fan_group); + applesmc_destroy_nodes(smc, fan_group); +out_bclm: + applesmc_destroy_nodes(smc, BCLM_group); out_info: - applesmc_destroy_nodes(info_group); -out_smcreg: - applesmc_destroy_smcreg(); -out_device: - platform_device_unregister(pdev); -out_driver: - platform_driver_unregister(&applesmc_driver); -out_region: - release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); + applesmc_destroy_nodes(smc, info_group); +out: + return ret; +} + +static void applesmc_destroy_modules(struct applesmc_device *smc) +{ + hwmon_device_unregister(smc->hwmon_dev); + applesmc_release_key_backlight(smc); + applesmc_release_light_sensor(smc); + applesmc_release_accelerometer(smc); + applesmc_destroy_nodes(smc, temp_group); + applesmc_destroy_nodes(smc, fan_group); + applesmc_destroy_nodes(smc, BCLM_group); + applesmc_destroy_nodes(smc, info_group); +} + +static int __init applesmc_init(void) +{ + int ret; + + if (!dmi_check_system(applesmc_whitelist)) { + pr_warn("supported laptop not found!\n"); + ret = -ENODEV; + goto out; + } + + ret = acpi_bus_register_driver(&applesmc_driver); + if (ret) + goto out; + + return 0; + out: pr_warn("driver init failed (ret=%d)!\n", ret); return ret; @@ -1397,23 +1948,14 @@ static int __init applesmc_init(void) static void __exit applesmc_exit(void) { - hwmon_device_unregister(hwmon_dev); - applesmc_release_key_backlight(); - applesmc_release_light_sensor(); - applesmc_release_accelerometer(); - applesmc_destroy_nodes(temp_group); - applesmc_destroy_nodes(fan_group); - applesmc_destroy_nodes(info_group); - applesmc_destroy_smcreg(); - platform_device_unregister(pdev); - platform_driver_unregister(&applesmc_driver); - release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); + acpi_bus_unregister_driver(&applesmc_driver); } module_init(applesmc_init); module_exit(applesmc_exit); MODULE_AUTHOR("Nicolas Boichat"); +MODULE_AUTHOR("Paul Pawlowski"); MODULE_DESCRIPTION("Apple SMC"); MODULE_LICENSE("GPL v2"); MODULE_DEVICE_TABLE(dmi, applesmc_whitelist); diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c index ca150618d32f..4e692b272ae9 100644 --- a/drivers/input/mouse/bcm5974.c +++ b/drivers/input/mouse/bcm5974.c @@ -83,6 +83,24 @@ #define USB_DEVICE_ID_APPLE_WELLSPRING9_ISO 0x0273 #define USB_DEVICE_ID_APPLE_WELLSPRING9_JIS 0x0274 +/* T2-Attached Devices */ +/* MacbookAir8,1 (2018) */ +#define USB_DEVICE_ID_APPLE_WELLSPRINGT2_J140K 0x027a +/* MacbookPro15,2 (2018) */ +#define USB_DEVICE_ID_APPLE_WELLSPRINGT2_J132 0x027b +/* MacbookPro15,1 (2018) */ +#define USB_DEVICE_ID_APPLE_WELLSPRINGT2_J680 0x027c +/* MacbookPro15,4 (2019) */ +#define USB_DEVICE_ID_APPLE_WELLSPRINGT2_J213 0x027d +/* MacbookPro16,2 (2020) */ +#define USB_DEVICE_ID_APPLE_WELLSPRINGT2_J214K 0x027e +/* MacbookPro16,3 (2020) */ +#define USB_DEVICE_ID_APPLE_WELLSPRINGT2_J223 0x027f +/* MacbookAir9,1 (2020) */ +#define USB_DEVICE_ID_APPLE_WELLSPRINGT2_J230K 0x0280 +/* MacbookPro16,1 (2019)*/ +#define USB_DEVICE_ID_APPLE_WELLSPRINGT2_J152F 0x0340 + #define BCM5974_DEVICE(prod) { \ .match_flags = (USB_DEVICE_ID_MATCH_DEVICE | \ USB_DEVICE_ID_MATCH_INT_CLASS | \ @@ -147,6 +165,22 @@ static const struct usb_device_id bcm5974_table[] = { BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING9_ANSI), BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING9_ISO), BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING9_JIS), + /* MacbookAir8,1 */ + BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRINGT2_J140K), + /* MacbookPro15,2 */ + BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRINGT2_J132), + /* MacbookPro15,1 */ + BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRINGT2_J680), + /* MacbookPro15,4 */ + BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRINGT2_J213), + /* MacbookPro16,2 */ + BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRINGT2_J214K), + /* MacbookPro16,3 */ + BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRINGT2_J223), + /* MacbookAir9,1 */ + BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRINGT2_J230K), + /* MacbookPro16,1 */ + BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRINGT2_J152F), /* Terminating entry */ {} }; @@ -483,6 +517,110 @@ static const struct bcm5974_config bcm5974_config_table[] = { { SN_COORD, -203, 6803 }, { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, + { + USB_DEVICE_ID_APPLE_WELLSPRINGT2_J140K, + 0, + 0, + HAS_INTEGRATED_BUTTON, + 0, sizeof(struct bt_data), + 0x83, DATAFORMAT(TYPE4), + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -6243, 6749 }, + { SN_COORD, -170, 7685 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } + }, + { + USB_DEVICE_ID_APPLE_WELLSPRINGT2_J132, + 0, + 0, + HAS_INTEGRATED_BUTTON, + 0, sizeof(struct bt_data), + 0x83, DATAFORMAT(TYPE4), + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -6243, 6749 }, + { SN_COORD, -170, 7685 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } + }, + { + USB_DEVICE_ID_APPLE_WELLSPRINGT2_J680, + 0, + 0, + HAS_INTEGRATED_BUTTON, + 0, sizeof(struct bt_data), + 0x83, DATAFORMAT(TYPE4), + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -7456, 7976 }, + { SN_COORD, -1768, 7685 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } + }, + { + USB_DEVICE_ID_APPLE_WELLSPRINGT2_J213, + 0, + 0, + HAS_INTEGRATED_BUTTON, + 0, sizeof(struct bt_data), + 0x83, DATAFORMAT(TYPE4), + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -6243, 6749 }, + { SN_COORD, -170, 7685 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } + }, + { + USB_DEVICE_ID_APPLE_WELLSPRINGT2_J214K, + 0, + 0, + HAS_INTEGRATED_BUTTON, + 0, sizeof(struct bt_data), + 0x83, DATAFORMAT(TYPE4), + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -7823, 8329 }, + { SN_COORD, -370, 7925 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } + }, + { + USB_DEVICE_ID_APPLE_WELLSPRINGT2_J223, + 0, + 0, + HAS_INTEGRATED_BUTTON, + 0, sizeof(struct bt_data), + 0x83, DATAFORMAT(TYPE4), + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -6243, 6749 }, + { SN_COORD, -170, 7685 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } + }, + { + USB_DEVICE_ID_APPLE_WELLSPRINGT2_J230K, + 0, + 0, + HAS_INTEGRATED_BUTTON, + 0, sizeof(struct bt_data), + 0x83, DATAFORMAT(TYPE4), + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -6243, 6749 }, + { SN_COORD, -170, 7685 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } + }, + { + USB_DEVICE_ID_APPLE_WELLSPRINGT2_J152F, + 0, + 0, + HAS_INTEGRATED_BUTTON, + 0, sizeof(struct bt_data), + 0x83, DATAFORMAT(TYPE4), + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -8916, 9918 }, + { SN_COORD, -1934, 9835 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } + }, {} }; diff --git a/drivers/pci/vgaarb.c b/drivers/pci/vgaarb.c index 78748e8d2dba..2b2b558cebe6 100644 --- a/drivers/pci/vgaarb.c +++ b/drivers/pci/vgaarb.c @@ -143,6 +143,7 @@ void vga_set_default_device(struct pci_dev *pdev) pci_dev_put(vga_default); vga_default = pci_dev_get(pdev); } +EXPORT_SYMBOL_GPL(vga_set_default_device); /** * vga_remove_vgacon - deactivate VGA console diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c index 1417e230edbd..e69785af8e1d 100644 --- a/drivers/platform/x86/apple-gmux.c +++ b/drivers/platform/x86/apple-gmux.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -107,6 +108,10 @@ struct apple_gmux_config { # define MMIO_GMUX_MAX_BRIGHTNESS 0xffff +static bool force_igd; +module_param(force_igd, bool, 0); +MODULE_PARM_DESC(force_idg, "Switch gpu to igd on module load. Make sure that you have apple-set-os set up and the iGPU is in `lspci -s 00:02.0`. (default: false) (bool)"); + static u8 gmux_pio_read8(struct apple_gmux_data *gmux_data, int port) { return inb(gmux_data->iostart + port); @@ -945,6 +950,19 @@ static int gmux_probe(struct pnp_dev *pnp, const struct pnp_device_id *id) gmux_enable_interrupts(gmux_data); gmux_read_switch_state(gmux_data); + if (force_igd) { + struct pci_dev *pdev; + + pdev = pci_get_domain_bus_and_slot(0, 0, PCI_DEVFN(2, 0)); + if (pdev) { + pr_info("Switching to IGD"); + gmux_switchto(VGA_SWITCHEROO_IGD); + vga_set_default_device(pdev); + } else { + pr_err("force_idg is true, but couldn't find iGPU at 00:02.0! Is apple-set-os working?"); + } + } + /* * Retina MacBook Pros cannot switch the panel's AUX separately * and need eDP pre-calibration. They are distinguishable from diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index db4a392841b1..580df4ce4f9f 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -66,4 +66,6 @@ source "drivers/staging/fieldbus/Kconfig" source "drivers/staging/vme_user/Kconfig" +source "drivers/staging/apple-bce/Kconfig" + endif # STAGING diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index 5390879b5d1b..528be2d3b546 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -22,3 +22,4 @@ obj-$(CONFIG_GREYBUS) += greybus/ obj-$(CONFIG_BCM2835_VCHIQ) += vc04_services/ obj-$(CONFIG_XIL_AXIS_FIFO) += axis-fifo/ obj-$(CONFIG_FIELDBUS_DEV) += fieldbus/ +obj-$(CONFIG_APPLE_BCE) += apple-bce/ diff --git a/drivers/staging/apple-bce/Kconfig b/drivers/staging/apple-bce/Kconfig new file mode 100644 index 000000000000..fe92bc441e89 --- /dev/null +++ b/drivers/staging/apple-bce/Kconfig @@ -0,0 +1,18 @@ +config APPLE_BCE + tristate "Apple BCE driver (VHCI and Audio support)" + default m + depends on X86 + select SOUND + select SND + select SND_PCM + select SND_JACK + help + VHCI and audio support on Apple MacBooks with the T2 Chip. + This driver is divided in three components: + - BCE (Buffer Copy Engine): which establishes a basic communication + channel with the T2 chip. This component is required by the other two: + - VHCI (Virtual Host Controller Interface): Access to keyboard, mouse + and other system devices depend on this virtual USB host controller + - Audio: a driver for the T2 audio interface. + + If "M" is selected, the module will be called apple-bce.' diff --git a/drivers/staging/apple-bce/Makefile b/drivers/staging/apple-bce/Makefile new file mode 100644 index 000000000000..8cfbd3f64af6 --- /dev/null +++ b/drivers/staging/apple-bce/Makefile @@ -0,0 +1,28 @@ +modname := apple-bce +obj-$(CONFIG_APPLE_BCE) += $(modname).o + +apple-bce-objs := apple_bce.o mailbox.o queue.o queue_dma.o vhci/vhci.o vhci/queue.o vhci/transfer.o audio/audio.o audio/protocol.o audio/protocol_bce.o audio/pcm.o + +MY_CFLAGS += -DWITHOUT_NVME_PATCH +#MY_CFLAGS += -g -DDEBUG +ccflags-y += ${MY_CFLAGS} +CC += ${MY_CFLAGS} + +KVERSION := $(KERNELRELEASE) +ifeq ($(origin KERNELRELEASE), undefined) +KVERSION := $(shell uname -r) +endif + +KDIR := /lib/modules/$(KVERSION)/build +PWD := $(shell pwd) + +.PHONY: all + +all: + $(MAKE) -C $(KDIR) M=$(PWD) modules + +clean: + $(MAKE) -C $(KDIR) M=$(PWD) clean + +install: + $(MAKE) -C $(KDIR) M=$(PWD) modules_install diff --git a/drivers/staging/apple-bce/apple_bce.c b/drivers/staging/apple-bce/apple_bce.c new file mode 100644 index 000000000000..4fd2415d7028 --- /dev/null +++ b/drivers/staging/apple-bce/apple_bce.c @@ -0,0 +1,445 @@ +#include "apple_bce.h" +#include +#include +#include "audio/audio.h" +#include + +static dev_t bce_chrdev; +static struct class *bce_class; + +struct apple_bce_device *global_bce; + +static int bce_create_command_queues(struct apple_bce_device *bce); +static void bce_free_command_queues(struct apple_bce_device *bce); +static irqreturn_t bce_handle_mb_irq(int irq, void *dev); +static irqreturn_t bce_handle_dma_irq(int irq, void *dev); +static int bce_fw_version_handshake(struct apple_bce_device *bce); +static int bce_register_command_queue(struct apple_bce_device *bce, struct bce_queue_memcfg *cfg, int is_sq); + +static int apple_bce_probe(struct pci_dev *dev, const struct pci_device_id *id) +{ + struct apple_bce_device *bce = NULL; + int status = 0; + int nvec; + + pr_info("apple-bce: capturing our device\n"); + + if (pci_enable_device(dev)) + return -ENODEV; + if (pci_request_regions(dev, "apple-bce")) { + status = -ENODEV; + goto fail; + } + pci_set_master(dev); + nvec = pci_alloc_irq_vectors(dev, 1, 8, PCI_IRQ_MSI); + if (nvec < 5) { + status = -EINVAL; + goto fail; + } + + bce = kzalloc(sizeof(struct apple_bce_device), GFP_KERNEL); + if (!bce) { + status = -ENOMEM; + goto fail; + } + + bce->pci = dev; + pci_set_drvdata(dev, bce); + + bce->devt = bce_chrdev; + bce->dev = device_create(bce_class, &dev->dev, bce->devt, NULL, "apple-bce"); + if (IS_ERR_OR_NULL(bce->dev)) { + status = PTR_ERR(bce_class); + goto fail; + } + + bce->reg_mem_mb = pci_iomap(dev, 4, 0); + bce->reg_mem_dma = pci_iomap(dev, 2, 0); + + if (IS_ERR_OR_NULL(bce->reg_mem_mb) || IS_ERR_OR_NULL(bce->reg_mem_dma)) { + dev_warn(&dev->dev, "apple-bce: Failed to pci_iomap required regions\n"); + goto fail; + } + + bce_mailbox_init(&bce->mbox, bce->reg_mem_mb); + bce_timestamp_init(&bce->timestamp, bce->reg_mem_mb); + + spin_lock_init(&bce->queues_lock); + ida_init(&bce->queue_ida); + + if ((status = pci_request_irq(dev, 0, bce_handle_mb_irq, NULL, dev, "bce_mbox"))) + goto fail; + if ((status = pci_request_irq(dev, 4, NULL, bce_handle_dma_irq, dev, "bce_dma"))) + goto fail_interrupt_0; + + if ((status = dma_set_mask_and_coherent(&dev->dev, DMA_BIT_MASK(37)))) { + dev_warn(&dev->dev, "dma: Setting mask failed\n"); + goto fail_interrupt; + } + + /* Gets the function 0's interface. This is needed because Apple only accepts DMA on our function if function 0 + is a bus master, so we need to work around this. */ + bce->pci0 = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0)); +#ifndef WITHOUT_NVME_PATCH + if ((status = pci_enable_device_mem(bce->pci0))) { + dev_warn(&dev->dev, "apple-bce: failed to enable function 0\n"); + goto fail_dev0; + } +#endif + pci_set_master(bce->pci0); + + bce_timestamp_start(&bce->timestamp, true); + + if ((status = bce_fw_version_handshake(bce))) + goto fail_ts; + pr_info("apple-bce: handshake done\n"); + + if ((status = bce_create_command_queues(bce))) { + pr_info("apple-bce: Creating command queues failed\n"); + goto fail_ts; + } + + global_bce = bce; + + bce_vhci_create(bce, &bce->vhci); + + return 0; + +fail_ts: + bce_timestamp_stop(&bce->timestamp); +#ifndef WITHOUT_NVME_PATCH + pci_disable_device(bce->pci0); +fail_dev0: +#endif + pci_dev_put(bce->pci0); +fail_interrupt: + pci_free_irq(dev, 4, dev); +fail_interrupt_0: + pci_free_irq(dev, 0, dev); +fail: + if (bce && bce->dev) { + device_destroy(bce_class, bce->devt); + + if (!IS_ERR_OR_NULL(bce->reg_mem_mb)) + pci_iounmap(dev, bce->reg_mem_mb); + if (!IS_ERR_OR_NULL(bce->reg_mem_dma)) + pci_iounmap(dev, bce->reg_mem_dma); + + kfree(bce); + } + + pci_free_irq_vectors(dev); + pci_release_regions(dev); + pci_disable_device(dev); + + if (!status) + status = -EINVAL; + return status; +} + +static int bce_create_command_queues(struct apple_bce_device *bce) +{ + int status; + struct bce_queue_memcfg *cfg; + + bce->cmd_cq = bce_alloc_cq(bce, 0, 0x20); + bce->cmd_cmdq = bce_alloc_cmdq(bce, 1, 0x20); + if (bce->cmd_cq == NULL || bce->cmd_cmdq == NULL) { + status = -ENOMEM; + goto err; + } + bce->queues[0] = (struct bce_queue *) bce->cmd_cq; + bce->queues[1] = (struct bce_queue *) bce->cmd_cmdq->sq; + + cfg = kzalloc(sizeof(struct bce_queue_memcfg), GFP_KERNEL); + if (!cfg) { + status = -ENOMEM; + goto err; + } + bce_get_cq_memcfg(bce->cmd_cq, cfg); + if ((status = bce_register_command_queue(bce, cfg, false))) + goto err; + bce_get_sq_memcfg(bce->cmd_cmdq->sq, bce->cmd_cq, cfg); + if ((status = bce_register_command_queue(bce, cfg, true))) + goto err; + kfree(cfg); + + return 0; + +err: + if (bce->cmd_cq) + bce_free_cq(bce, bce->cmd_cq); + if (bce->cmd_cmdq) + bce_free_cmdq(bce, bce->cmd_cmdq); + return status; +} + +static void bce_free_command_queues(struct apple_bce_device *bce) +{ + bce_free_cq(bce, bce->cmd_cq); + bce_free_cmdq(bce, bce->cmd_cmdq); + bce->cmd_cq = NULL; + bce->queues[0] = NULL; +} + +static irqreturn_t bce_handle_mb_irq(int irq, void *dev) +{ + struct apple_bce_device *bce = pci_get_drvdata(dev); + bce_mailbox_handle_interrupt(&bce->mbox); + return IRQ_HANDLED; +} + +static irqreturn_t bce_handle_dma_irq(int irq, void *dev) +{ + int i; + struct apple_bce_device *bce = pci_get_drvdata(dev); + spin_lock(&bce->queues_lock); + for (i = 0; i < BCE_MAX_QUEUE_COUNT; i++) + if (bce->queues[i] && bce->queues[i]->type == BCE_QUEUE_CQ) + bce_handle_cq_completions(bce, (struct bce_queue_cq *) bce->queues[i]); + spin_unlock(&bce->queues_lock); + return IRQ_HANDLED; +} + +static int bce_fw_version_handshake(struct apple_bce_device *bce) +{ + u64 result; + int status; + + if ((status = bce_mailbox_send(&bce->mbox, BCE_MB_MSG(BCE_MB_SET_FW_PROTOCOL_VERSION, BC_PROTOCOL_VERSION), + &result))) + return status; + if (BCE_MB_TYPE(result) != BCE_MB_SET_FW_PROTOCOL_VERSION || + BCE_MB_VALUE(result) != BC_PROTOCOL_VERSION) { + pr_err("apple-bce: FW version handshake failed %x:%llx\n", BCE_MB_TYPE(result), BCE_MB_VALUE(result)); + return -EINVAL; + } + return 0; +} + +static int bce_register_command_queue(struct apple_bce_device *bce, struct bce_queue_memcfg *cfg, int is_sq) +{ + int status; + int cmd_type; + u64 result; + // OS X uses an bidirectional direction, but that's not really needed + dma_addr_t a = dma_map_single(&bce->pci->dev, cfg, sizeof(struct bce_queue_memcfg), DMA_TO_DEVICE); + if (dma_mapping_error(&bce->pci->dev, a)) + return -ENOMEM; + cmd_type = is_sq ? BCE_MB_REGISTER_COMMAND_SQ : BCE_MB_REGISTER_COMMAND_CQ; + status = bce_mailbox_send(&bce->mbox, BCE_MB_MSG(cmd_type, a), &result); + dma_unmap_single(&bce->pci->dev, a, sizeof(struct bce_queue_memcfg), DMA_TO_DEVICE); + if (status) + return status; + if (BCE_MB_TYPE(result) != BCE_MB_REGISTER_COMMAND_QUEUE_REPLY) + return -EINVAL; + return 0; +} + +static void apple_bce_remove(struct pci_dev *dev) +{ + struct apple_bce_device *bce = pci_get_drvdata(dev); + bce->is_being_removed = true; + + bce_vhci_destroy(&bce->vhci); + + bce_timestamp_stop(&bce->timestamp); +#ifndef WITHOUT_NVME_PATCH + pci_disable_device(bce->pci0); +#endif + pci_dev_put(bce->pci0); + pci_free_irq(dev, 0, dev); + pci_free_irq(dev, 4, dev); + bce_free_command_queues(bce); + pci_iounmap(dev, bce->reg_mem_mb); + pci_iounmap(dev, bce->reg_mem_dma); + device_destroy(bce_class, bce->devt); + pci_free_irq_vectors(dev); + pci_release_regions(dev); + pci_disable_device(dev); + kfree(bce); +} + +static int bce_save_state_and_sleep(struct apple_bce_device *bce) +{ + int attempt, status = 0; + u64 resp; + dma_addr_t dma_addr; + void *dma_ptr = NULL; + size_t size = max(PAGE_SIZE, 4096UL); + + for (attempt = 0; attempt < 5; ++attempt) { + pr_debug("apple-bce: suspend: attempt %i, buffer size %li\n", attempt, size); + dma_ptr = dma_alloc_coherent(&bce->pci->dev, size, &dma_addr, GFP_KERNEL); + if (!dma_ptr) { + pr_err("apple-bce: suspend failed (data alloc failed)\n"); + break; + } + BUG_ON((dma_addr % 4096) != 0); + status = bce_mailbox_send(&bce->mbox, + BCE_MB_MSG(BCE_MB_SAVE_STATE_AND_SLEEP, (dma_addr & ~(4096LLU - 1)) | (size / 4096)), &resp); + if (status) { + pr_err("apple-bce: suspend failed (mailbox send)\n"); + break; + } + if (BCE_MB_TYPE(resp) == BCE_MB_SAVE_RESTORE_STATE_COMPLETE) { + bce->saved_data_dma_addr = dma_addr; + bce->saved_data_dma_ptr = dma_ptr; + bce->saved_data_dma_size = size; + return 0; + } else if (BCE_MB_TYPE(resp) == BCE_MB_SAVE_STATE_AND_SLEEP_FAILURE) { + dma_free_coherent(&bce->pci->dev, size, dma_ptr, dma_addr); + /* The 0x10ff magic value was extracted from Apple's driver */ + size = (BCE_MB_VALUE(resp) + 0x10ff) & ~(4096LLU - 1); + pr_debug("apple-bce: suspend: device requested a larger buffer (%li)\n", size); + continue; + } else { + pr_err("apple-bce: suspend failed (invalid device response)\n"); + status = -EINVAL; + break; + } + } + if (dma_ptr) + dma_free_coherent(&bce->pci->dev, size, dma_ptr, dma_addr); + if (!status) + return bce_mailbox_send(&bce->mbox, BCE_MB_MSG(BCE_MB_SLEEP_NO_STATE, 0), &resp); + return status; +} + +static int bce_restore_state_and_wake(struct apple_bce_device *bce) +{ + int status; + u64 resp; + if (!bce->saved_data_dma_ptr) { + if ((status = bce_mailbox_send(&bce->mbox, BCE_MB_MSG(BCE_MB_RESTORE_NO_STATE, 0), &resp))) { + pr_err("apple-bce: resume with no state failed (mailbox send)\n"); + return status; + } + if (BCE_MB_TYPE(resp) != BCE_MB_RESTORE_NO_STATE) { + pr_err("apple-bce: resume with no state failed (invalid device response)\n"); + return -EINVAL; + } + return 0; + } + + if ((status = bce_mailbox_send(&bce->mbox, BCE_MB_MSG(BCE_MB_RESTORE_STATE_AND_WAKE, + (bce->saved_data_dma_addr & ~(4096LLU - 1)) | (bce->saved_data_dma_size / 4096)), &resp))) { + pr_err("apple-bce: resume with state failed (mailbox send)\n"); + goto finish_with_state; + } + if (BCE_MB_TYPE(resp) != BCE_MB_SAVE_RESTORE_STATE_COMPLETE) { + pr_err("apple-bce: resume with state failed (invalid device response)\n"); + status = -EINVAL; + goto finish_with_state; + } + +finish_with_state: + dma_free_coherent(&bce->pci->dev, bce->saved_data_dma_size, bce->saved_data_dma_ptr, bce->saved_data_dma_addr); + bce->saved_data_dma_ptr = NULL; + return status; +} + +static int apple_bce_suspend(struct device *dev) +{ + struct apple_bce_device *bce = pci_get_drvdata(to_pci_dev(dev)); + int status; + + bce_timestamp_stop(&bce->timestamp); + + if ((status = bce_save_state_and_sleep(bce))) + return status; + + return 0; +} + +static int apple_bce_resume(struct device *dev) +{ + struct apple_bce_device *bce = pci_get_drvdata(to_pci_dev(dev)); + int status; + + pci_set_master(bce->pci); + pci_set_master(bce->pci0); + + if ((status = bce_restore_state_and_wake(bce))) + return status; + + bce_timestamp_start(&bce->timestamp, false); + + return 0; +} + +static struct pci_device_id apple_bce_ids[ ] = { + { PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x1801) }, + { 0, }, +}; + +MODULE_DEVICE_TABLE(pci, apple_bce_ids); + +struct dev_pm_ops apple_bce_pci_driver_pm = { + .suspend = apple_bce_suspend, + .resume = apple_bce_resume +}; +struct pci_driver apple_bce_pci_driver = { + .name = "apple-bce", + .id_table = apple_bce_ids, + .probe = apple_bce_probe, + .remove = apple_bce_remove, + .driver = { + .pm = &apple_bce_pci_driver_pm + } +}; + + +static int __init apple_bce_module_init(void) +{ + int result; + if ((result = alloc_chrdev_region(&bce_chrdev, 0, 1, "apple-bce"))) + goto fail_chrdev; +#if LINUX_VERSION_CODE < KERNEL_VERSION(6,4,0) + bce_class = class_create(THIS_MODULE, "apple-bce"); +#else + bce_class = class_create("apple-bce"); +#endif + if (IS_ERR(bce_class)) { + result = PTR_ERR(bce_class); + goto fail_class; + } + if ((result = bce_vhci_module_init())) { + pr_err("apple-bce: bce-vhci init failed"); + goto fail_class; + } + + result = pci_register_driver(&apple_bce_pci_driver); + if (result) + goto fail_drv; + + aaudio_module_init(); + + return 0; + +fail_drv: + pci_unregister_driver(&apple_bce_pci_driver); +fail_class: + class_destroy(bce_class); +fail_chrdev: + unregister_chrdev_region(bce_chrdev, 1); + if (!result) + result = -EINVAL; + return result; +} +static void __exit apple_bce_module_exit(void) +{ + pci_unregister_driver(&apple_bce_pci_driver); + + aaudio_module_exit(); + bce_vhci_module_exit(); + class_destroy(bce_class); + unregister_chrdev_region(bce_chrdev, 1); +} + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("MrARM"); +MODULE_DESCRIPTION("Apple BCE Driver"); +MODULE_VERSION("0.01"); +module_init(apple_bce_module_init); +module_exit(apple_bce_module_exit); diff --git a/drivers/staging/apple-bce/apple_bce.h b/drivers/staging/apple-bce/apple_bce.h new file mode 100644 index 000000000000..f13ab8d5742e --- /dev/null +++ b/drivers/staging/apple-bce/apple_bce.h @@ -0,0 +1,38 @@ +#pragma once + +#include +#include +#include "mailbox.h" +#include "queue.h" +#include "vhci/vhci.h" + +#define BC_PROTOCOL_VERSION 0x20001 +#define BCE_MAX_QUEUE_COUNT 0x100 + +#define BCE_QUEUE_USER_MIN 2 +#define BCE_QUEUE_USER_MAX (BCE_MAX_QUEUE_COUNT - 1) + +struct apple_bce_device { + struct pci_dev *pci, *pci0; + dev_t devt; + struct device *dev; + void __iomem *reg_mem_mb; + void __iomem *reg_mem_dma; + struct bce_mailbox mbox; + struct bce_timestamp timestamp; + struct bce_queue *queues[BCE_MAX_QUEUE_COUNT]; + struct spinlock queues_lock; + struct ida queue_ida; + struct bce_queue_cq *cmd_cq; + struct bce_queue_cmdq *cmd_cmdq; + struct bce_queue_sq *int_sq_list[BCE_MAX_QUEUE_COUNT]; + bool is_being_removed; + + dma_addr_t saved_data_dma_addr; + void *saved_data_dma_ptr; + size_t saved_data_dma_size; + + struct bce_vhci vhci; +}; + +extern struct apple_bce_device *global_bce; \ No newline at end of file diff --git a/drivers/staging/apple-bce/audio/audio.c b/drivers/staging/apple-bce/audio/audio.c new file mode 100644 index 000000000000..bd16ddd16c1d --- /dev/null +++ b/drivers/staging/apple-bce/audio/audio.c @@ -0,0 +1,711 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include "audio.h" +#include "pcm.h" +#include + +static int aaudio_alsa_index = SNDRV_DEFAULT_IDX1; +static char *aaudio_alsa_id = SNDRV_DEFAULT_STR1; + +static dev_t aaudio_chrdev; +static struct class *aaudio_class; + +static int aaudio_init_cmd(struct aaudio_device *a); +static int aaudio_init_bs(struct aaudio_device *a); +static void aaudio_init_dev(struct aaudio_device *a, aaudio_device_id_t dev_id); +static void aaudio_free_dev(struct aaudio_subdevice *sdev); + +static int aaudio_probe(struct pci_dev *dev, const struct pci_device_id *id) +{ + struct aaudio_device *aaudio = NULL; + struct aaudio_subdevice *sdev = NULL; + int status = 0; + u32 cfg; + + pr_info("aaudio: capturing our device\n"); + + if (pci_enable_device(dev)) + return -ENODEV; + if (pci_request_regions(dev, "aaudio")) { + status = -ENODEV; + goto fail; + } + pci_set_master(dev); + + aaudio = kzalloc(sizeof(struct aaudio_device), GFP_KERNEL); + if (!aaudio) { + status = -ENOMEM; + goto fail; + } + + aaudio->bce = global_bce; + if (!aaudio->bce) { + dev_warn(&dev->dev, "aaudio: No BCE available\n"); + status = -EINVAL; + goto fail; + } + + aaudio->pci = dev; + pci_set_drvdata(dev, aaudio); + + aaudio->devt = aaudio_chrdev; + aaudio->dev = device_create(aaudio_class, &dev->dev, aaudio->devt, NULL, "aaudio"); + if (IS_ERR_OR_NULL(aaudio->dev)) { + status = PTR_ERR(aaudio_class); + goto fail; + } + device_link_add(aaudio->dev, aaudio->bce->dev, DL_FLAG_PM_RUNTIME | DL_FLAG_AUTOREMOVE_CONSUMER); + + init_completion(&aaudio->remote_alive); + INIT_LIST_HEAD(&aaudio->subdevice_list); + + /* Init: set an unknown flag in the bitset */ + if (pci_read_config_dword(dev, 4, &cfg)) + dev_warn(&dev->dev, "aaudio: pci_read_config_dword fail\n"); + if (pci_write_config_dword(dev, 4, cfg | 6u)) + dev_warn(&dev->dev, "aaudio: pci_write_config_dword fail\n"); + + dev_info(aaudio->dev, "aaudio: bs len = %llx\n", pci_resource_len(dev, 0)); + aaudio->reg_mem_bs_dma = pci_resource_start(dev, 0); + aaudio->reg_mem_bs = pci_iomap(dev, 0, 0); + aaudio->reg_mem_cfg = pci_iomap(dev, 4, 0); + + aaudio->reg_mem_gpr = (u32 __iomem *) ((u8 __iomem *) aaudio->reg_mem_cfg + 0xC000); + + if (IS_ERR_OR_NULL(aaudio->reg_mem_bs) || IS_ERR_OR_NULL(aaudio->reg_mem_cfg)) { + dev_warn(&dev->dev, "aaudio: Failed to pci_iomap required regions\n"); + goto fail; + } + + if (aaudio_bce_init(aaudio)) { + dev_warn(&dev->dev, "aaudio: Failed to init BCE command transport\n"); + goto fail; + } + + if (snd_card_new(aaudio->dev, aaudio_alsa_index, aaudio_alsa_id, THIS_MODULE, 0, &aaudio->card)) { + dev_err(&dev->dev, "aaudio: Failed to create ALSA card\n"); + goto fail; + } + + strcpy(aaudio->card->shortname, "Apple T2 Audio"); + strcpy(aaudio->card->longname, "Apple T2 Audio"); + strcpy(aaudio->card->mixername, "Apple T2 Audio"); + /* Dynamic alsa ids start at 100 */ + aaudio->next_alsa_id = 100; + + if (aaudio_init_cmd(aaudio)) { + dev_err(&dev->dev, "aaudio: Failed to initialize over BCE\n"); + goto fail_snd; + } + + if (aaudio_init_bs(aaudio)) { + dev_err(&dev->dev, "aaudio: Failed to initialize BufferStruct\n"); + goto fail_snd; + } + + if ((status = aaudio_cmd_set_remote_access(aaudio, AAUDIO_REMOTE_ACCESS_ON))) { + dev_err(&dev->dev, "Failed to set remote access\n"); + return status; + } + + if (snd_card_register(aaudio->card)) { + dev_err(&dev->dev, "aaudio: Failed to register ALSA sound device\n"); + goto fail_snd; + } + + list_for_each_entry(sdev, &aaudio->subdevice_list, list) { + struct aaudio_buffer_struct_device *dev = &aaudio->bs->devices[sdev->buf_id]; + + if (sdev->out_stream_cnt == 1 && !strcmp(dev->name, "Speaker")) { + struct snd_pcm_hardware *hw = sdev->out_streams[0].alsa_hw_desc; + + snprintf(aaudio->card->driver, sizeof(aaudio->card->driver) / sizeof(char), "AppleT2x%d", hw->channels_min); + } + } + + return 0; + +fail_snd: + snd_card_free(aaudio->card); +fail: + if (aaudio && aaudio->dev) + device_destroy(aaudio_class, aaudio->devt); + kfree(aaudio); + + if (!IS_ERR_OR_NULL(aaudio->reg_mem_bs)) + pci_iounmap(dev, aaudio->reg_mem_bs); + if (!IS_ERR_OR_NULL(aaudio->reg_mem_cfg)) + pci_iounmap(dev, aaudio->reg_mem_cfg); + + pci_release_regions(dev); + pci_disable_device(dev); + + if (!status) + status = -EINVAL; + return status; +} + + + +static void aaudio_remove(struct pci_dev *dev) +{ + struct aaudio_subdevice *sdev; + struct aaudio_device *aaudio = pci_get_drvdata(dev); + + snd_card_free(aaudio->card); + while (!list_empty(&aaudio->subdevice_list)) { + sdev = list_first_entry(&aaudio->subdevice_list, struct aaudio_subdevice, list); + list_del(&sdev->list); + aaudio_free_dev(sdev); + } + pci_iounmap(dev, aaudio->reg_mem_bs); + pci_iounmap(dev, aaudio->reg_mem_cfg); + device_destroy(aaudio_class, aaudio->devt); + pci_free_irq_vectors(dev); + pci_release_regions(dev); + pci_disable_device(dev); + kfree(aaudio); +} + +static int aaudio_suspend(struct device *dev) +{ + struct aaudio_device *aaudio = pci_get_drvdata(to_pci_dev(dev)); + + if (aaudio_cmd_set_remote_access(aaudio, AAUDIO_REMOTE_ACCESS_OFF)) + dev_warn(aaudio->dev, "Failed to reset remote access\n"); + + pci_disable_device(aaudio->pci); + return 0; +} + +static int aaudio_resume(struct device *dev) +{ + int status; + struct aaudio_device *aaudio = pci_get_drvdata(to_pci_dev(dev)); + + if ((status = pci_enable_device(aaudio->pci))) + return status; + pci_set_master(aaudio->pci); + + if ((status = aaudio_cmd_set_remote_access(aaudio, AAUDIO_REMOTE_ACCESS_ON))) { + dev_err(aaudio->dev, "Failed to set remote access\n"); + return status; + } + + return 0; +} + +static int aaudio_init_cmd(struct aaudio_device *a) +{ + int status; + struct aaudio_send_ctx sctx; + struct aaudio_msg buf; + u64 dev_cnt, dev_i; + aaudio_device_id_t *dev_l; + + if ((status = aaudio_send(a, &sctx, 500, + aaudio_msg_write_alive_notification, 1, 3))) { + dev_err(a->dev, "Sending alive notification failed\n"); + return status; + } + + if (wait_for_completion_timeout(&a->remote_alive, msecs_to_jiffies(500)) == 0) { + dev_err(a->dev, "Timed out waiting for remote\n"); + return -ETIMEDOUT; + } + dev_info(a->dev, "Continuing init\n"); + + buf = aaudio_reply_alloc(); + if ((status = aaudio_cmd_get_device_list(a, &buf, &dev_l, &dev_cnt))) { + dev_err(a->dev, "Failed to get device list\n"); + aaudio_reply_free(&buf); + return status; + } + for (dev_i = 0; dev_i < dev_cnt; ++dev_i) + aaudio_init_dev(a, dev_l[dev_i]); + aaudio_reply_free(&buf); + + return 0; +} + +static void aaudio_init_stream_info(struct aaudio_subdevice *sdev, struct aaudio_stream *strm); +static void aaudio_handle_jack_connection_change(struct aaudio_subdevice *sdev); + +static void aaudio_init_dev(struct aaudio_device *a, aaudio_device_id_t dev_id) +{ + struct aaudio_subdevice *sdev; + struct aaudio_msg buf = aaudio_reply_alloc(); + u64 uid_len, stream_cnt, i; + aaudio_object_id_t *stream_list; + char *uid; + + sdev = kzalloc(sizeof(struct aaudio_subdevice), GFP_KERNEL); + + if (aaudio_cmd_get_property(a, &buf, dev_id, dev_id, AAUDIO_PROP(AAUDIO_PROP_SCOPE_GLOBAL, AAUDIO_PROP_UID, 0), + NULL, 0, (void **) &uid, &uid_len) || uid_len > AAUDIO_DEVICE_MAX_UID_LEN) { + dev_err(a->dev, "Failed to get device uid for device %llx\n", dev_id); + goto fail; + } + dev_info(a->dev, "Remote device %llx %.*s\n", dev_id, (int) uid_len, uid); + + sdev->a = a; + INIT_LIST_HEAD(&sdev->list); + sdev->dev_id = dev_id; + sdev->buf_id = AAUDIO_BUFFER_ID_NONE; + strncpy(sdev->uid, uid, uid_len); + sdev->uid[uid_len + 1] = '\0'; + + if (aaudio_cmd_get_primitive_property(a, dev_id, dev_id, + AAUDIO_PROP(AAUDIO_PROP_SCOPE_INPUT, AAUDIO_PROP_LATENCY, 0), NULL, 0, &sdev->in_latency, sizeof(u32))) + dev_warn(a->dev, "Failed to query device input latency\n"); + if (aaudio_cmd_get_primitive_property(a, dev_id, dev_id, + AAUDIO_PROP(AAUDIO_PROP_SCOPE_OUTPUT, AAUDIO_PROP_LATENCY, 0), NULL, 0, &sdev->out_latency, sizeof(u32))) + dev_warn(a->dev, "Failed to query device output latency\n"); + + if (aaudio_cmd_get_input_stream_list(a, &buf, dev_id, &stream_list, &stream_cnt)) { + dev_err(a->dev, "Failed to get input stream list for device %llx\n", dev_id); + goto fail; + } + if (stream_cnt > AAUDIO_DEIVCE_MAX_INPUT_STREAMS) { + dev_warn(a->dev, "Device %s input stream count %llu is larger than the supported count of %u\n", + sdev->uid, stream_cnt, AAUDIO_DEIVCE_MAX_INPUT_STREAMS); + stream_cnt = AAUDIO_DEIVCE_MAX_INPUT_STREAMS; + } + sdev->in_stream_cnt = stream_cnt; + for (i = 0; i < stream_cnt; i++) { + sdev->in_streams[i].id = stream_list[i]; + sdev->in_streams[i].buffer_cnt = 0; + aaudio_init_stream_info(sdev, &sdev->in_streams[i]); + sdev->in_streams[i].latency += sdev->in_latency; + } + + if (aaudio_cmd_get_output_stream_list(a, &buf, dev_id, &stream_list, &stream_cnt)) { + dev_err(a->dev, "Failed to get output stream list for device %llx\n", dev_id); + goto fail; + } + if (stream_cnt > AAUDIO_DEIVCE_MAX_OUTPUT_STREAMS) { + dev_warn(a->dev, "Device %s input stream count %llu is larger than the supported count of %u\n", + sdev->uid, stream_cnt, AAUDIO_DEIVCE_MAX_OUTPUT_STREAMS); + stream_cnt = AAUDIO_DEIVCE_MAX_OUTPUT_STREAMS; + } + sdev->out_stream_cnt = stream_cnt; + for (i = 0; i < stream_cnt; i++) { + sdev->out_streams[i].id = stream_list[i]; + sdev->out_streams[i].buffer_cnt = 0; + aaudio_init_stream_info(sdev, &sdev->out_streams[i]); + sdev->out_streams[i].latency += sdev->in_latency; + } + + if (sdev->is_pcm) + aaudio_create_pcm(sdev); + /* Headphone Jack status */ + if (!strcmp(sdev->uid, "Codec Output")) { + if (snd_jack_new(a->card, sdev->uid, SND_JACK_HEADPHONE, &sdev->jack, true, false)) + dev_warn(a->dev, "Failed to create an attached jack for %s\n", sdev->uid); + aaudio_cmd_property_listener(a, sdev->dev_id, sdev->dev_id, + AAUDIO_PROP(AAUDIO_PROP_SCOPE_OUTPUT, AAUDIO_PROP_JACK_PLUGGED, 0)); + aaudio_handle_jack_connection_change(sdev); + } + + aaudio_reply_free(&buf); + + list_add_tail(&sdev->list, &a->subdevice_list); + return; + +fail: + aaudio_reply_free(&buf); + kfree(sdev); +} + +static void aaudio_init_stream_info(struct aaudio_subdevice *sdev, struct aaudio_stream *strm) +{ + if (aaudio_cmd_get_primitive_property(sdev->a, sdev->dev_id, strm->id, + AAUDIO_PROP(AAUDIO_PROP_SCOPE_GLOBAL, AAUDIO_PROP_PHYS_FORMAT, 0), NULL, 0, + &strm->desc, sizeof(strm->desc))) + dev_warn(sdev->a->dev, "Failed to query stream descriptor\n"); + if (aaudio_cmd_get_primitive_property(sdev->a, sdev->dev_id, strm->id, + AAUDIO_PROP(AAUDIO_PROP_SCOPE_GLOBAL, AAUDIO_PROP_LATENCY, 0), NULL, 0, &strm->latency, sizeof(u32))) + dev_warn(sdev->a->dev, "Failed to query stream latency\n"); + if (strm->desc.format_id == AAUDIO_FORMAT_LPCM) + sdev->is_pcm = true; +} + +static void aaudio_free_dev(struct aaudio_subdevice *sdev) +{ + size_t i; + for (i = 0; i < sdev->in_stream_cnt; i++) { + if (sdev->in_streams[i].alsa_hw_desc) + kfree(sdev->in_streams[i].alsa_hw_desc); + if (sdev->in_streams[i].buffers) + kfree(sdev->in_streams[i].buffers); + } + for (i = 0; i < sdev->out_stream_cnt; i++) { + if (sdev->out_streams[i].alsa_hw_desc) + kfree(sdev->out_streams[i].alsa_hw_desc); + if (sdev->out_streams[i].buffers) + kfree(sdev->out_streams[i].buffers); + } + kfree(sdev); +} + +static struct aaudio_subdevice *aaudio_find_dev_by_dev_id(struct aaudio_device *a, aaudio_device_id_t dev_id) +{ + struct aaudio_subdevice *sdev; + list_for_each_entry(sdev, &a->subdevice_list, list) { + if (dev_id == sdev->dev_id) + return sdev; + } + return NULL; +} + +static struct aaudio_subdevice *aaudio_find_dev_by_uid(struct aaudio_device *a, const char *uid) +{ + struct aaudio_subdevice *sdev; + list_for_each_entry(sdev, &a->subdevice_list, list) { + if (!strcmp(uid, sdev->uid)) + return sdev; + } + return NULL; +} + +static void aaudio_init_bs_stream(struct aaudio_device *a, struct aaudio_stream *strm, + struct aaudio_buffer_struct_stream *bs_strm); +static void aaudio_init_bs_stream_host(struct aaudio_device *a, struct aaudio_stream *strm, + struct aaudio_buffer_struct_stream *bs_strm); + +static int aaudio_init_bs(struct aaudio_device *a) +{ + int i, j; + struct aaudio_buffer_struct_device *dev; + struct aaudio_subdevice *sdev; + u32 ver, sig, bs_base; + + ver = ioread32(&a->reg_mem_gpr[0]); + if (ver < 3) { + dev_err(a->dev, "aaudio: Bad GPR version (%u)", ver); + return -EINVAL; + } + sig = ioread32(&a->reg_mem_gpr[1]); + if (sig != AAUDIO_SIG) { + dev_err(a->dev, "aaudio: Bad GPR sig (%x)", sig); + return -EINVAL; + } + bs_base = ioread32(&a->reg_mem_gpr[2]); + a->bs = (struct aaudio_buffer_struct *) ((u8 *) a->reg_mem_bs + bs_base); + if (a->bs->signature != AAUDIO_SIG) { + dev_err(a->dev, "aaudio: Bad BufferStruct sig (%x)", a->bs->signature); + return -EINVAL; + } + dev_info(a->dev, "aaudio: BufferStruct ver = %i\n", a->bs->version); + dev_info(a->dev, "aaudio: Num devices = %i\n", a->bs->num_devices); + for (i = 0; i < a->bs->num_devices; i++) { + dev = &a->bs->devices[i]; + dev_info(a->dev, "aaudio: Device %i %s\n", i, dev->name); + + sdev = aaudio_find_dev_by_uid(a, dev->name); + if (!sdev) { + dev_err(a->dev, "aaudio: Subdevice not found for BufferStruct device %s\n", dev->name); + continue; + } + sdev->buf_id = (u8) i; + dev->num_input_streams = 0; + for (j = 0; j < dev->num_output_streams; j++) { + dev_info(a->dev, "aaudio: Device %i Stream %i: Output; Buffer Count = %i\n", i, j, + dev->output_streams[j].num_buffers); + if (j < sdev->out_stream_cnt) + aaudio_init_bs_stream(a, &sdev->out_streams[j], &dev->output_streams[j]); + } + } + + list_for_each_entry(sdev, &a->subdevice_list, list) { + if (sdev->buf_id != AAUDIO_BUFFER_ID_NONE) + continue; + sdev->buf_id = i; + dev_info(a->dev, "aaudio: Created device %i %s\n", i, sdev->uid); + strcpy(a->bs->devices[i].name, sdev->uid); + a->bs->devices[i].num_input_streams = 0; + a->bs->devices[i].num_output_streams = 0; + a->bs->num_devices = ++i; + } + list_for_each_entry(sdev, &a->subdevice_list, list) { + if (sdev->in_stream_cnt == 1) { + dev_info(a->dev, "aaudio: Device %i Host Stream; Input\n", sdev->buf_id); + aaudio_init_bs_stream_host(a, &sdev->in_streams[0], &a->bs->devices[sdev->buf_id].input_streams[0]); + a->bs->devices[sdev->buf_id].num_input_streams = 1; + wmb(); + + if (aaudio_cmd_set_input_stream_address_ranges(a, sdev->dev_id)) { + dev_err(a->dev, "aaudio: Failed to set input stream address ranges\n"); + } + } + } + + return 0; +} + +static void aaudio_init_bs_stream(struct aaudio_device *a, struct aaudio_stream *strm, + struct aaudio_buffer_struct_stream *bs_strm) +{ + size_t i; + strm->buffer_cnt = bs_strm->num_buffers; + if (bs_strm->num_buffers > AAUDIO_DEIVCE_MAX_BUFFER_COUNT) { + dev_warn(a->dev, "BufferStruct buffer count %u exceeds driver limit of %u\n", bs_strm->num_buffers, + AAUDIO_DEIVCE_MAX_BUFFER_COUNT); + strm->buffer_cnt = AAUDIO_DEIVCE_MAX_BUFFER_COUNT; + } + if (!strm->buffer_cnt) + return; + strm->buffers = kmalloc_array(strm->buffer_cnt, sizeof(struct aaudio_dma_buf), GFP_KERNEL); + if (!strm->buffers) { + dev_err(a->dev, "Buffer list allocation failed\n"); + return; + } + for (i = 0; i < strm->buffer_cnt; i++) { + strm->buffers[i].dma_addr = a->reg_mem_bs_dma + (dma_addr_t) bs_strm->buffers[i].address; + strm->buffers[i].ptr = a->reg_mem_bs + bs_strm->buffers[i].address; + strm->buffers[i].size = bs_strm->buffers[i].size; + } + + if (strm->buffer_cnt == 1) { + strm->alsa_hw_desc = kmalloc(sizeof(struct snd_pcm_hardware), GFP_KERNEL); + if (aaudio_create_hw_info(&strm->desc, strm->alsa_hw_desc, strm->buffers[0].size)) { + kfree(strm->alsa_hw_desc); + strm->alsa_hw_desc = NULL; + } + } +} + +static void aaudio_init_bs_stream_host(struct aaudio_device *a, struct aaudio_stream *strm, + struct aaudio_buffer_struct_stream *bs_strm) +{ + size_t size; + dma_addr_t dma_addr; + void *dma_ptr; + size = strm->desc.bytes_per_packet * 16640; + dma_ptr = dma_alloc_coherent(&a->pci->dev, size, &dma_addr, GFP_KERNEL); + if (!dma_ptr) { + dev_err(a->dev, "dma_alloc_coherent failed\n"); + return; + } + bs_strm->buffers[0].address = dma_addr; + bs_strm->buffers[0].size = size; + bs_strm->num_buffers = 1; + + memset(dma_ptr, 0, size); + + strm->buffer_cnt = 1; + strm->buffers = kmalloc_array(strm->buffer_cnt, sizeof(struct aaudio_dma_buf), GFP_KERNEL); + if (!strm->buffers) { + dev_err(a->dev, "Buffer list allocation failed\n"); + return; + } + strm->buffers[0].dma_addr = dma_addr; + strm->buffers[0].ptr = dma_ptr; + strm->buffers[0].size = size; + + strm->alsa_hw_desc = kmalloc(sizeof(struct snd_pcm_hardware), GFP_KERNEL); + if (aaudio_create_hw_info(&strm->desc, strm->alsa_hw_desc, strm->buffers[0].size)) { + kfree(strm->alsa_hw_desc); + strm->alsa_hw_desc = NULL; + } +} + +static void aaudio_handle_prop_change(struct aaudio_device *a, struct aaudio_msg *msg); + +void aaudio_handle_notification(struct aaudio_device *a, struct aaudio_msg *msg) +{ + struct aaudio_send_ctx sctx; + struct aaudio_msg_base base; + if (aaudio_msg_read_base(msg, &base)) + return; + switch (base.msg) { + case AAUDIO_MSG_NOTIFICATION_BOOT: + dev_info(a->dev, "Received boot notification from remote\n"); + + /* Resend the alive notify */ + if (aaudio_send(a, &sctx, 500, + aaudio_msg_write_alive_notification, 1, 3)) { + pr_err("Sending alive notification failed\n"); + } + break; + case AAUDIO_MSG_NOTIFICATION_ALIVE: + dev_info(a->dev, "Received alive notification from remote\n"); + complete_all(&a->remote_alive); + break; + case AAUDIO_MSG_PROPERTY_CHANGED: + aaudio_handle_prop_change(a, msg); + break; + default: + dev_info(a->dev, "Unhandled notification %i", base.msg); + break; + } +} + +struct aaudio_prop_change_work_struct { + struct work_struct ws; + struct aaudio_device *a; + aaudio_device_id_t dev; + aaudio_object_id_t obj; + struct aaudio_prop_addr prop; +}; + +static void aaudio_handle_jack_connection_change(struct aaudio_subdevice *sdev) +{ + u32 plugged; + if (!sdev->jack) + return; + /* NOTE: Apple made the plug status scoped to the input and output streams. This makes no sense for us, so I just + * always pick the OUTPUT status. */ + if (aaudio_cmd_get_primitive_property(sdev->a, sdev->dev_id, sdev->dev_id, + AAUDIO_PROP(AAUDIO_PROP_SCOPE_OUTPUT, AAUDIO_PROP_JACK_PLUGGED, 0), NULL, 0, &plugged, sizeof(plugged))) { + dev_err(sdev->a->dev, "Failed to get jack enable status\n"); + return; + } + dev_dbg(sdev->a->dev, "Jack is now %s\n", plugged ? "plugged" : "unplugged"); + snd_jack_report(sdev->jack, plugged ? sdev->jack->type : 0); +} + +void aaudio_handle_prop_change_work(struct work_struct *ws) +{ + struct aaudio_prop_change_work_struct *work = container_of(ws, struct aaudio_prop_change_work_struct, ws); + struct aaudio_subdevice *sdev; + + sdev = aaudio_find_dev_by_dev_id(work->a, work->dev); + if (!sdev) { + dev_err(work->a->dev, "Property notification change: device not found\n"); + goto done; + } + dev_dbg(work->a->dev, "Property changed for device: %s\n", sdev->uid); + + if (work->prop.scope == AAUDIO_PROP_SCOPE_OUTPUT && work->prop.selector == AAUDIO_PROP_JACK_PLUGGED) { + aaudio_handle_jack_connection_change(sdev); + } + +done: + kfree(work); +} + +void aaudio_handle_prop_change(struct aaudio_device *a, struct aaudio_msg *msg) +{ + /* NOTE: This is a scheduled work because this callback will generally need to query device information and this + * is not possible when we are in the reply parsing code's context. */ + struct aaudio_prop_change_work_struct *work; + work = kmalloc(sizeof(struct aaudio_prop_change_work_struct), GFP_KERNEL); + work->a = a; + INIT_WORK(&work->ws, aaudio_handle_prop_change_work); + aaudio_msg_read_property_changed(msg, &work->dev, &work->obj, &work->prop); + schedule_work(&work->ws); +} + +#define aaudio_send_cmd_response(a, sctx, msg, fn, ...) \ + if (aaudio_send_with_tag(a, sctx, ((struct aaudio_msg_header *) msg->data)->tag, 500, fn, ##__VA_ARGS__)) \ + pr_err("aaudio: Failed to reply to a command\n"); + +void aaudio_handle_cmd_timestamp(struct aaudio_device *a, struct aaudio_msg *msg) +{ + ktime_t time_os = ktime_get_boottime(); + struct aaudio_send_ctx sctx; + struct aaudio_subdevice *sdev; + u64 devid, timestamp, update_seed; + aaudio_msg_read_update_timestamp(msg, &devid, ×tamp, &update_seed); + dev_dbg(a->dev, "Received timestamp update for dev=%llx ts=%llx seed=%llx\n", devid, timestamp, update_seed); + + sdev = aaudio_find_dev_by_dev_id(a, devid); + aaudio_handle_timestamp(sdev, time_os, timestamp); + + aaudio_send_cmd_response(a, &sctx, msg, + aaudio_msg_write_update_timestamp_response); +} + +void aaudio_handle_command(struct aaudio_device *a, struct aaudio_msg *msg) +{ + struct aaudio_msg_base base; + if (aaudio_msg_read_base(msg, &base)) + return; + switch (base.msg) { + case AAUDIO_MSG_UPDATE_TIMESTAMP: + aaudio_handle_cmd_timestamp(a, msg); + break; + default: + dev_info(a->dev, "Unhandled device command %i", base.msg); + break; + } +} + +static struct pci_device_id aaudio_ids[ ] = { + { PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x1803) }, + { 0, }, +}; + +struct dev_pm_ops aaudio_pci_driver_pm = { + .suspend = aaudio_suspend, + .resume = aaudio_resume +}; +struct pci_driver aaudio_pci_driver = { + .name = "aaudio", + .id_table = aaudio_ids, + .probe = aaudio_probe, + .remove = aaudio_remove, + .driver = { + .pm = &aaudio_pci_driver_pm + } +}; + + +int aaudio_module_init(void) +{ + int result; + if ((result = alloc_chrdev_region(&aaudio_chrdev, 0, 1, "aaudio"))) + goto fail_chrdev; +#if LINUX_VERSION_CODE < KERNEL_VERSION(6,4,0) + aaudio_class = class_create(THIS_MODULE, "aaudio"); +#else + aaudio_class = class_create("aaudio"); +#endif + if (IS_ERR(aaudio_class)) { + result = PTR_ERR(aaudio_class); + goto fail_class; + } + + result = pci_register_driver(&aaudio_pci_driver); + if (result) + goto fail_drv; + return 0; + +fail_drv: + pci_unregister_driver(&aaudio_pci_driver); +fail_class: + class_destroy(aaudio_class); +fail_chrdev: + unregister_chrdev_region(aaudio_chrdev, 1); + if (!result) + result = -EINVAL; + return result; +} + +void aaudio_module_exit(void) +{ + pci_unregister_driver(&aaudio_pci_driver); + class_destroy(aaudio_class); + unregister_chrdev_region(aaudio_chrdev, 1); +} + +struct aaudio_alsa_pcm_id_mapping aaudio_alsa_id_mappings[] = { + {"Speaker", 0}, + {"Digital Mic", 1}, + {"Codec Output", 2}, + {"Codec Input", 3}, + {"Bridge Loopback", 4}, + {} +}; + +module_param_named(index, aaudio_alsa_index, int, 0444); +MODULE_PARM_DESC(index, "Index value for Apple Internal Audio soundcard."); +module_param_named(id, aaudio_alsa_id, charp, 0444); +MODULE_PARM_DESC(id, "ID string for Apple Internal Audio soundcard."); diff --git a/drivers/staging/apple-bce/audio/audio.h b/drivers/staging/apple-bce/audio/audio.h new file mode 100644 index 000000000000..004bc1e22ea4 --- /dev/null +++ b/drivers/staging/apple-bce/audio/audio.h @@ -0,0 +1,125 @@ +#ifndef AAUDIO_H +#define AAUDIO_H + +#include +#include +#include "../apple_bce.h" +#include "protocol_bce.h" +#include "description.h" + +#define AAUDIO_SIG 0x19870423 + +#define AAUDIO_DEVICE_MAX_UID_LEN 128 +#define AAUDIO_DEIVCE_MAX_INPUT_STREAMS 1 +#define AAUDIO_DEIVCE_MAX_OUTPUT_STREAMS 1 +#define AAUDIO_DEIVCE_MAX_BUFFER_COUNT 1 + +#define AAUDIO_BUFFER_ID_NONE 0xffu + +struct snd_card; +struct snd_pcm; +struct snd_pcm_hardware; +struct snd_jack; + +struct __attribute__((packed)) __attribute__((aligned(4))) aaudio_buffer_struct_buffer { + size_t address; + size_t size; + size_t pad[4]; +}; +struct aaudio_buffer_struct_stream { + u8 num_buffers; + struct aaudio_buffer_struct_buffer buffers[100]; + char filler[32]; +}; +struct aaudio_buffer_struct_device { + char name[128]; + u8 num_input_streams; + u8 num_output_streams; + struct aaudio_buffer_struct_stream input_streams[5]; + struct aaudio_buffer_struct_stream output_streams[5]; + char filler[128]; +}; +struct aaudio_buffer_struct { + u32 version; + u32 signature; + u32 flags; + u8 num_devices; + struct aaudio_buffer_struct_device devices[20]; +}; + +struct aaudio_device; +struct aaudio_dma_buf { + dma_addr_t dma_addr; + void *ptr; + size_t size; +}; +struct aaudio_stream { + aaudio_object_id_t id; + size_t buffer_cnt; + struct aaudio_dma_buf *buffers; + + struct aaudio_apple_description desc; + struct snd_pcm_hardware *alsa_hw_desc; + u32 latency; + + bool waiting_for_first_ts; + + ktime_t remote_timestamp; + snd_pcm_sframes_t frame_min; + int started; +}; +struct aaudio_subdevice { + struct aaudio_device *a; + struct list_head list; + aaudio_device_id_t dev_id; + u32 in_latency, out_latency; + u8 buf_id; + int alsa_id; + char uid[AAUDIO_DEVICE_MAX_UID_LEN + 1]; + size_t in_stream_cnt; + struct aaudio_stream in_streams[AAUDIO_DEIVCE_MAX_INPUT_STREAMS]; + size_t out_stream_cnt; + struct aaudio_stream out_streams[AAUDIO_DEIVCE_MAX_OUTPUT_STREAMS]; + bool is_pcm; + struct snd_pcm *pcm; + struct snd_jack *jack; +}; +struct aaudio_alsa_pcm_id_mapping { + const char *name; + int alsa_id; +}; + +struct aaudio_device { + struct pci_dev *pci; + dev_t devt; + struct device *dev; + void __iomem *reg_mem_bs; + dma_addr_t reg_mem_bs_dma; + void __iomem *reg_mem_cfg; + + u32 __iomem *reg_mem_gpr; + + struct aaudio_buffer_struct *bs; + + struct apple_bce_device *bce; + struct aaudio_bce bcem; + + struct snd_card *card; + + struct list_head subdevice_list; + int next_alsa_id; + + struct completion remote_alive; +}; + +void aaudio_handle_notification(struct aaudio_device *a, struct aaudio_msg *msg); +void aaudio_handle_prop_change_work(struct work_struct *ws); +void aaudio_handle_cmd_timestamp(struct aaudio_device *a, struct aaudio_msg *msg); +void aaudio_handle_command(struct aaudio_device *a, struct aaudio_msg *msg); + +int aaudio_module_init(void); +void aaudio_module_exit(void); + +extern struct aaudio_alsa_pcm_id_mapping aaudio_alsa_id_mappings[]; + +#endif //AAUDIO_H diff --git a/drivers/staging/apple-bce/audio/description.h b/drivers/staging/apple-bce/audio/description.h new file mode 100644 index 000000000000..dfef3ab68f27 --- /dev/null +++ b/drivers/staging/apple-bce/audio/description.h @@ -0,0 +1,42 @@ +#ifndef AAUDIO_DESCRIPTION_H +#define AAUDIO_DESCRIPTION_H + +#include + +struct aaudio_apple_description { + u64 sample_rate_double; + u32 format_id; + u32 format_flags; + u32 bytes_per_packet; + u32 frames_per_packet; + u32 bytes_per_frame; + u32 channels_per_frame; + u32 bits_per_channel; + u32 reserved; +}; + +enum { + AAUDIO_FORMAT_LPCM = 0x6c70636d // 'lpcm' +}; + +enum { + AAUDIO_FORMAT_FLAG_FLOAT = 1, + AAUDIO_FORMAT_FLAG_BIG_ENDIAN = 2, + AAUDIO_FORMAT_FLAG_SIGNED = 4, + AAUDIO_FORMAT_FLAG_PACKED = 8, + AAUDIO_FORMAT_FLAG_ALIGNED_HIGH = 16, + AAUDIO_FORMAT_FLAG_NON_INTERLEAVED = 32, + AAUDIO_FORMAT_FLAG_NON_MIXABLE = 64 +}; + +static inline u64 aaudio_double_to_u64(u64 d) +{ + u8 sign = (u8) ((d >> 63) & 1); + s32 exp = (s32) ((d >> 52) & 0x7ff) - 1023; + u64 fr = d & ((1LL << 52) - 1); + if (sign || exp < 0) + return 0; + return (u64) ((1LL << exp) + (fr >> (52 - exp))); +} + +#endif //AAUDIO_DESCRIPTION_H diff --git a/drivers/staging/apple-bce/audio/pcm.c b/drivers/staging/apple-bce/audio/pcm.c new file mode 100644 index 000000000000..1026e10a9ac5 --- /dev/null +++ b/drivers/staging/apple-bce/audio/pcm.c @@ -0,0 +1,308 @@ +#include "pcm.h" +#include "audio.h" + +static u64 aaudio_get_alsa_fmtbit(struct aaudio_apple_description *desc) +{ + if (desc->format_flags & AAUDIO_FORMAT_FLAG_FLOAT) { + if (desc->bits_per_channel == 32) { + if (desc->format_flags & AAUDIO_FORMAT_FLAG_BIG_ENDIAN) + return SNDRV_PCM_FMTBIT_FLOAT_BE; + else + return SNDRV_PCM_FMTBIT_FLOAT_LE; + } else if (desc->bits_per_channel == 64) { + if (desc->format_flags & AAUDIO_FORMAT_FLAG_BIG_ENDIAN) + return SNDRV_PCM_FMTBIT_FLOAT64_BE; + else + return SNDRV_PCM_FMTBIT_FLOAT64_LE; + } else { + pr_err("aaudio: unsupported bits per channel for float format: %u\n", desc->bits_per_channel); + return 0; + } + } +#define DEFINE_BPC_OPTION(val, b) \ + case val: \ + if (desc->format_flags & AAUDIO_FORMAT_FLAG_BIG_ENDIAN) { \ + if (desc->format_flags & AAUDIO_FORMAT_FLAG_SIGNED) \ + return SNDRV_PCM_FMTBIT_S ## b ## BE; \ + else \ + return SNDRV_PCM_FMTBIT_U ## b ## BE; \ + } else { \ + if (desc->format_flags & AAUDIO_FORMAT_FLAG_SIGNED) \ + return SNDRV_PCM_FMTBIT_S ## b ## LE; \ + else \ + return SNDRV_PCM_FMTBIT_U ## b ## LE; \ + } + if (desc->format_flags & AAUDIO_FORMAT_FLAG_PACKED) { + switch (desc->bits_per_channel) { + case 8: + case 16: + case 32: + break; + DEFINE_BPC_OPTION(24, 24_3) + default: + pr_err("aaudio: unsupported bits per channel for packed format: %u\n", desc->bits_per_channel); + return 0; + } + } + if (desc->format_flags & AAUDIO_FORMAT_FLAG_ALIGNED_HIGH) { + switch (desc->bits_per_channel) { + DEFINE_BPC_OPTION(24, 32_) + default: + pr_err("aaudio: unsupported bits per channel for high-aligned format: %u\n", desc->bits_per_channel); + return 0; + } + } + switch (desc->bits_per_channel) { + case 8: + if (desc->format_flags & AAUDIO_FORMAT_FLAG_SIGNED) + return SNDRV_PCM_FMTBIT_S8; + else + return SNDRV_PCM_FMTBIT_U8; + DEFINE_BPC_OPTION(16, 16_) + DEFINE_BPC_OPTION(24, 24_) + DEFINE_BPC_OPTION(32, 32_) + default: + pr_err("aaudio: unsupported bits per channel: %u\n", desc->bits_per_channel); + return 0; + } +} +int aaudio_create_hw_info(struct aaudio_apple_description *desc, struct snd_pcm_hardware *alsa_hw, + size_t buf_size) +{ + uint rate; + alsa_hw->info = (SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_DOUBLE); + if (desc->format_flags & AAUDIO_FORMAT_FLAG_NON_MIXABLE) + pr_warn("aaudio: unsupported hw flag: NON_MIXABLE\n"); + if (!(desc->format_flags & AAUDIO_FORMAT_FLAG_NON_INTERLEAVED)) + alsa_hw->info |= SNDRV_PCM_INFO_INTERLEAVED; + alsa_hw->formats = aaudio_get_alsa_fmtbit(desc); + if (!alsa_hw->formats) + return -EINVAL; + rate = (uint) aaudio_double_to_u64(desc->sample_rate_double); + alsa_hw->rates = snd_pcm_rate_to_rate_bit(rate); + alsa_hw->rate_min = rate; + alsa_hw->rate_max = rate; + alsa_hw->channels_min = desc->channels_per_frame; + alsa_hw->channels_max = desc->channels_per_frame; + alsa_hw->buffer_bytes_max = buf_size; + alsa_hw->period_bytes_min = desc->bytes_per_packet; + alsa_hw->period_bytes_max = desc->bytes_per_packet; + alsa_hw->periods_min = (uint) (buf_size / desc->bytes_per_packet); + alsa_hw->periods_max = (uint) (buf_size / desc->bytes_per_packet); + pr_debug("aaudio_create_hw_info: format = %llu, rate = %u/%u. channels = %u, periods = %u, period size = %lu\n", + alsa_hw->formats, alsa_hw->rate_min, alsa_hw->rates, alsa_hw->channels_min, alsa_hw->periods_min, + alsa_hw->period_bytes_min); + return 0; +} + +static struct aaudio_stream *aaudio_pcm_stream(struct snd_pcm_substream *substream) +{ + struct aaudio_subdevice *sdev = snd_pcm_substream_chip(substream); + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + return &sdev->out_streams[substream->number]; + else + return &sdev->in_streams[substream->number]; +} + +static int aaudio_pcm_open(struct snd_pcm_substream *substream) +{ + pr_debug("aaudio_pcm_open\n"); + substream->runtime->hw = *aaudio_pcm_stream(substream)->alsa_hw_desc; + + return 0; +} + +static int aaudio_pcm_close(struct snd_pcm_substream *substream) +{ + pr_debug("aaudio_pcm_close\n"); + return 0; +} + +static int aaudio_pcm_prepare(struct snd_pcm_substream *substream) +{ + return 0; +} + +static int aaudio_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params) +{ + struct aaudio_stream *astream = aaudio_pcm_stream(substream); + pr_debug("aaudio_pcm_hw_params\n"); + + if (!astream->buffer_cnt || !astream->buffers) + return -EINVAL; + + substream->runtime->dma_area = astream->buffers[0].ptr; + substream->runtime->dma_addr = astream->buffers[0].dma_addr; + substream->runtime->dma_bytes = astream->buffers[0].size; + return 0; +} + +static int aaudio_pcm_hw_free(struct snd_pcm_substream *substream) +{ + pr_debug("aaudio_pcm_hw_free\n"); + return 0; +} + +static void aaudio_pcm_start(struct snd_pcm_substream *substream) +{ + struct aaudio_subdevice *sdev = snd_pcm_substream_chip(substream); + struct aaudio_stream *stream = aaudio_pcm_stream(substream); + void *buf; + size_t s; + ktime_t time_start, time_end; + bool back_buffer; + time_start = ktime_get(); + + back_buffer = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK); + + if (back_buffer) { + s = frames_to_bytes(substream->runtime, substream->runtime->control->appl_ptr); + buf = kmalloc(s, GFP_KERNEL); + memcpy_fromio(buf, substream->runtime->dma_area, s); + time_end = ktime_get(); + pr_debug("aaudio: Backed up the buffer in %lluns [%li]\n", ktime_to_ns(time_end - time_start), + substream->runtime->control->appl_ptr); + } + + stream->waiting_for_first_ts = true; + stream->frame_min = stream->latency; + + aaudio_cmd_start_io(sdev->a, sdev->dev_id); + if (back_buffer) + memcpy_toio(substream->runtime->dma_area, buf, s); + + time_end = ktime_get(); + pr_debug("aaudio: Started the audio device in %lluns\n", ktime_to_ns(time_end - time_start)); +} + +static int aaudio_pcm_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct aaudio_subdevice *sdev = snd_pcm_substream_chip(substream); + struct aaudio_stream *stream = aaudio_pcm_stream(substream); + pr_debug("aaudio_pcm_trigger %x\n", cmd); + + /* We only supports triggers on the #0 buffer */ + if (substream->number != 0) + return 0; + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + aaudio_pcm_start(substream); + stream->started = 1; + break; + case SNDRV_PCM_TRIGGER_STOP: + aaudio_cmd_stop_io(sdev->a, sdev->dev_id); + stream->started = 0; + break; + default: + return -EINVAL; + } + return 0; +} + +static snd_pcm_uframes_t aaudio_pcm_pointer(struct snd_pcm_substream *substream) +{ + struct aaudio_stream *stream = aaudio_pcm_stream(substream); + ktime_t time_from_start; + snd_pcm_sframes_t frames; + snd_pcm_sframes_t buffer_time_length; + + if (!stream->started || stream->waiting_for_first_ts) { + pr_warn("aaudio_pcm_pointer while not started\n"); + return 0; + } + + /* Approximate the pointer based on the last received timestamp */ + time_from_start = ktime_get_boottime() - stream->remote_timestamp; + buffer_time_length = NSEC_PER_SEC * substream->runtime->buffer_size / substream->runtime->rate; + frames = (ktime_to_ns(time_from_start) % buffer_time_length) * substream->runtime->buffer_size / buffer_time_length; + if (ktime_to_ns(time_from_start) < buffer_time_length) { + if (frames < stream->frame_min) + frames = stream->frame_min; + else + stream->frame_min = 0; + } else { + if (ktime_to_ns(time_from_start) < 2 * buffer_time_length) + stream->frame_min = frames; + else + stream->frame_min = 0; /* Heavy desync */ + } + frames -= stream->latency; + if (frames < 0) + frames += ((-frames - 1) / substream->runtime->buffer_size + 1) * substream->runtime->buffer_size; + return (snd_pcm_uframes_t) frames; +} + +static struct snd_pcm_ops aaudio_pcm_ops = { + .open = aaudio_pcm_open, + .close = aaudio_pcm_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = aaudio_pcm_hw_params, + .hw_free = aaudio_pcm_hw_free, + .prepare = aaudio_pcm_prepare, + .trigger = aaudio_pcm_trigger, + .pointer = aaudio_pcm_pointer, + .mmap = snd_pcm_lib_mmap_iomem +}; + +int aaudio_create_pcm(struct aaudio_subdevice *sdev) +{ + struct snd_pcm *pcm; + struct aaudio_alsa_pcm_id_mapping *id_mapping; + int err; + + if (!sdev->is_pcm || (sdev->in_stream_cnt == 0 && sdev->out_stream_cnt == 0)) { + return -EINVAL; + } + + for (id_mapping = aaudio_alsa_id_mappings; id_mapping->name; id_mapping++) { + if (!strcmp(sdev->uid, id_mapping->name)) { + sdev->alsa_id = id_mapping->alsa_id; + break; + } + } + if (!id_mapping->name) + sdev->alsa_id = sdev->a->next_alsa_id++; + err = snd_pcm_new(sdev->a->card, sdev->uid, sdev->alsa_id, + (int) sdev->out_stream_cnt, (int) sdev->in_stream_cnt, &pcm); + if (err < 0) + return err; + pcm->private_data = sdev; + pcm->nonatomic = 1; + sdev->pcm = pcm; + strcpy(pcm->name, sdev->uid); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &aaudio_pcm_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &aaudio_pcm_ops); + return 0; +} + +static void aaudio_handle_stream_timestamp(struct snd_pcm_substream *substream, ktime_t timestamp) +{ + unsigned long flags; + struct aaudio_stream *stream; + + stream = aaudio_pcm_stream(substream); + snd_pcm_stream_lock_irqsave(substream, flags); + stream->remote_timestamp = timestamp; + if (stream->waiting_for_first_ts) { + stream->waiting_for_first_ts = false; + snd_pcm_stream_unlock_irqrestore(substream, flags); + return; + } + snd_pcm_stream_unlock_irqrestore(substream, flags); + snd_pcm_period_elapsed(substream); +} + +void aaudio_handle_timestamp(struct aaudio_subdevice *sdev, ktime_t os_timestamp, u64 dev_timestamp) +{ + struct snd_pcm_substream *substream; + + substream = sdev->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; + if (substream) + aaudio_handle_stream_timestamp(substream, dev_timestamp); + substream = sdev->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; + if (substream) + aaudio_handle_stream_timestamp(substream, os_timestamp); +} diff --git a/drivers/staging/apple-bce/audio/pcm.h b/drivers/staging/apple-bce/audio/pcm.h new file mode 100644 index 000000000000..ea5f35fbe408 --- /dev/null +++ b/drivers/staging/apple-bce/audio/pcm.h @@ -0,0 +1,16 @@ +#ifndef AAUDIO_PCM_H +#define AAUDIO_PCM_H + +#include +#include + +struct aaudio_subdevice; +struct aaudio_apple_description; +struct snd_pcm_hardware; + +int aaudio_create_hw_info(struct aaudio_apple_description *desc, struct snd_pcm_hardware *alsa_hw, size_t buf_size); +int aaudio_create_pcm(struct aaudio_subdevice *sdev); + +void aaudio_handle_timestamp(struct aaudio_subdevice *sdev, ktime_t os_timestamp, u64 dev_timestamp); + +#endif //AAUDIO_PCM_H diff --git a/drivers/staging/apple-bce/audio/protocol.c b/drivers/staging/apple-bce/audio/protocol.c new file mode 100644 index 000000000000..2314813aeead --- /dev/null +++ b/drivers/staging/apple-bce/audio/protocol.c @@ -0,0 +1,347 @@ +#include "protocol.h" +#include "protocol_bce.h" +#include "audio.h" + +int aaudio_msg_read_base(struct aaudio_msg *msg, struct aaudio_msg_base *base) +{ + if (msg->size < sizeof(struct aaudio_msg_header) + sizeof(struct aaudio_msg_base) * 2) + return -EINVAL; + *base = *((struct aaudio_msg_base *) ((struct aaudio_msg_header *) msg->data + 1)); + return 0; +} + +#define READ_START(type) \ + size_t offset = sizeof(struct aaudio_msg_header) + sizeof(struct aaudio_msg_base); (void)offset; \ + if (((struct aaudio_msg_base *) ((struct aaudio_msg_header *) msg->data + 1))->msg != type) \ + return -EINVAL; +#define READ_DEVID_VAR(devid) *devid = ((struct aaudio_msg_header *) msg->data)->device_id +#define READ_VAL(type) ({ offset += sizeof(type); *((type *) ((u8 *) msg->data + offset - sizeof(type))); }) +#define READ_VAR(type, var) *var = READ_VAL(type) + +int aaudio_msg_read_start_io_response(struct aaudio_msg *msg) +{ + READ_START(AAUDIO_MSG_START_IO_RESPONSE); + return 0; +} + +int aaudio_msg_read_stop_io_response(struct aaudio_msg *msg) +{ + READ_START(AAUDIO_MSG_STOP_IO_RESPONSE); + return 0; +} + +int aaudio_msg_read_update_timestamp(struct aaudio_msg *msg, aaudio_device_id_t *devid, + u64 *timestamp, u64 *update_seed) +{ + READ_START(AAUDIO_MSG_UPDATE_TIMESTAMP); + READ_DEVID_VAR(devid); + READ_VAR(u64, timestamp); + READ_VAR(u64, update_seed); + return 0; +} + +int aaudio_msg_read_get_property_response(struct aaudio_msg *msg, aaudio_object_id_t *obj, + struct aaudio_prop_addr *prop, void **data, u64 *data_size) +{ + READ_START(AAUDIO_MSG_GET_PROPERTY_RESPONSE); + READ_VAR(aaudio_object_id_t, obj); + READ_VAR(u32, &prop->element); + READ_VAR(u32, &prop->scope); + READ_VAR(u32, &prop->selector); + READ_VAR(u64, data_size); + *data = ((u8 *) msg->data + offset); + /* offset += data_size; */ + return 0; +} + +int aaudio_msg_read_set_property_response(struct aaudio_msg *msg, aaudio_object_id_t *obj) +{ + READ_START(AAUDIO_MSG_SET_PROPERTY_RESPONSE); + READ_VAR(aaudio_object_id_t, obj); + return 0; +} + +int aaudio_msg_read_property_listener_response(struct aaudio_msg *msg, aaudio_object_id_t *obj, + struct aaudio_prop_addr *prop) +{ + READ_START(AAUDIO_MSG_PROPERTY_LISTENER_RESPONSE); + READ_VAR(aaudio_object_id_t, obj); + READ_VAR(u32, &prop->element); + READ_VAR(u32, &prop->scope); + READ_VAR(u32, &prop->selector); + return 0; +} + +int aaudio_msg_read_property_changed(struct aaudio_msg *msg, aaudio_device_id_t *devid, aaudio_object_id_t *obj, + struct aaudio_prop_addr *prop) +{ + READ_START(AAUDIO_MSG_PROPERTY_CHANGED); + READ_DEVID_VAR(devid); + READ_VAR(aaudio_object_id_t, obj); + READ_VAR(u32, &prop->element); + READ_VAR(u32, &prop->scope); + READ_VAR(u32, &prop->selector); + return 0; +} + +int aaudio_msg_read_set_input_stream_address_ranges_response(struct aaudio_msg *msg) +{ + READ_START(AAUDIO_MSG_SET_INPUT_STREAM_ADDRESS_RANGES_RESPONSE); + return 0; +} + +int aaudio_msg_read_get_input_stream_list_response(struct aaudio_msg *msg, aaudio_object_id_t **str_l, u64 *str_cnt) +{ + READ_START(AAUDIO_MSG_GET_INPUT_STREAM_LIST_RESPONSE); + READ_VAR(u64, str_cnt); + *str_l = (aaudio_device_id_t *) ((u8 *) msg->data + offset); + /* offset += str_cnt * sizeof(aaudio_object_id_t); */ + return 0; +} + +int aaudio_msg_read_get_output_stream_list_response(struct aaudio_msg *msg, aaudio_object_id_t **str_l, u64 *str_cnt) +{ + READ_START(AAUDIO_MSG_GET_OUTPUT_STREAM_LIST_RESPONSE); + READ_VAR(u64, str_cnt); + *str_l = (aaudio_device_id_t *) ((u8 *) msg->data + offset); + /* offset += str_cnt * sizeof(aaudio_object_id_t); */ + return 0; +} + +int aaudio_msg_read_set_remote_access_response(struct aaudio_msg *msg) +{ + READ_START(AAUDIO_MSG_SET_REMOTE_ACCESS_RESPONSE); + return 0; +} + +int aaudio_msg_read_get_device_list_response(struct aaudio_msg *msg, aaudio_device_id_t **dev_l, u64 *dev_cnt) +{ + READ_START(AAUDIO_MSG_GET_DEVICE_LIST_RESPONSE); + READ_VAR(u64, dev_cnt); + *dev_l = (aaudio_device_id_t *) ((u8 *) msg->data + offset); + /* offset += dev_cnt * sizeof(aaudio_device_id_t); */ + return 0; +} + +#define WRITE_START_OF_TYPE(typev, devid) \ + size_t offset = sizeof(struct aaudio_msg_header); (void) offset; \ + ((struct aaudio_msg_header *) msg->data)->type = (typev); \ + ((struct aaudio_msg_header *) msg->data)->device_id = (devid); +#define WRITE_START_COMMAND(devid) WRITE_START_OF_TYPE(AAUDIO_MSG_TYPE_COMMAND, devid) +#define WRITE_START_RESPONSE() WRITE_START_OF_TYPE(AAUDIO_MSG_TYPE_RESPONSE, 0) +#define WRITE_START_NOTIFICATION() WRITE_START_OF_TYPE(AAUDIO_MSG_TYPE_NOTIFICATION, 0) +#define WRITE_VAL(type, value) { *((type *) ((u8 *) msg->data + offset)) = value; offset += sizeof(value); } +#define WRITE_BIN(value, size) { memcpy((u8 *) msg->data + offset, value, size); offset += size; } +#define WRITE_BASE(type) WRITE_VAL(u32, type) WRITE_VAL(u32, 0) +#define WRITE_END() { msg->size = offset; } + +void aaudio_msg_write_start_io(struct aaudio_msg *msg, aaudio_device_id_t dev) +{ + WRITE_START_COMMAND(dev); + WRITE_BASE(AAUDIO_MSG_START_IO); + WRITE_END(); +} + +void aaudio_msg_write_stop_io(struct aaudio_msg *msg, aaudio_device_id_t dev) +{ + WRITE_START_COMMAND(dev); + WRITE_BASE(AAUDIO_MSG_STOP_IO); + WRITE_END(); +} + +void aaudio_msg_write_get_property(struct aaudio_msg *msg, aaudio_device_id_t dev, aaudio_object_id_t obj, + struct aaudio_prop_addr prop, void *qualifier, u64 qualifier_size) +{ + WRITE_START_COMMAND(dev); + WRITE_BASE(AAUDIO_MSG_GET_PROPERTY); + WRITE_VAL(aaudio_object_id_t, obj); + WRITE_VAL(u32, prop.element); + WRITE_VAL(u32, prop.scope); + WRITE_VAL(u32, prop.selector); + WRITE_VAL(u64, qualifier_size); + WRITE_BIN(qualifier, qualifier_size); + WRITE_END(); +} + +void aaudio_msg_write_set_property(struct aaudio_msg *msg, aaudio_device_id_t dev, aaudio_object_id_t obj, + struct aaudio_prop_addr prop, void *data, u64 data_size, void *qualifier, u64 qualifier_size) +{ + WRITE_START_COMMAND(dev); + WRITE_BASE(AAUDIO_MSG_SET_PROPERTY); + WRITE_VAL(aaudio_object_id_t, obj); + WRITE_VAL(u32, prop.element); + WRITE_VAL(u32, prop.scope); + WRITE_VAL(u32, prop.selector); + WRITE_VAL(u64, data_size); + WRITE_BIN(data, data_size); + WRITE_VAL(u64, qualifier_size); + WRITE_BIN(qualifier, qualifier_size); + WRITE_END(); +} + +void aaudio_msg_write_property_listener(struct aaudio_msg *msg, aaudio_device_id_t dev, aaudio_object_id_t obj, + struct aaudio_prop_addr prop) +{ + WRITE_START_COMMAND(dev); + WRITE_BASE(AAUDIO_MSG_PROPERTY_LISTENER); + WRITE_VAL(aaudio_object_id_t, obj); + WRITE_VAL(u32, prop.element); + WRITE_VAL(u32, prop.scope); + WRITE_VAL(u32, prop.selector); + WRITE_END(); +} + +void aaudio_msg_write_set_input_stream_address_ranges(struct aaudio_msg *msg, aaudio_device_id_t devid) +{ + WRITE_START_COMMAND(devid); + WRITE_BASE(AAUDIO_MSG_SET_INPUT_STREAM_ADDRESS_RANGES); + WRITE_END(); +} + +void aaudio_msg_write_get_input_stream_list(struct aaudio_msg *msg, aaudio_device_id_t devid) +{ + WRITE_START_COMMAND(devid); + WRITE_BASE(AAUDIO_MSG_GET_INPUT_STREAM_LIST); + WRITE_END(); +} + +void aaudio_msg_write_get_output_stream_list(struct aaudio_msg *msg, aaudio_device_id_t devid) +{ + WRITE_START_COMMAND(devid); + WRITE_BASE(AAUDIO_MSG_GET_OUTPUT_STREAM_LIST); + WRITE_END(); +} + +void aaudio_msg_write_set_remote_access(struct aaudio_msg *msg, u64 mode) +{ + WRITE_START_COMMAND(0); + WRITE_BASE(AAUDIO_MSG_SET_REMOTE_ACCESS); + WRITE_VAL(u64, mode); + WRITE_END(); +} + +void aaudio_msg_write_alive_notification(struct aaudio_msg *msg, u32 proto_ver, u32 msg_ver) +{ + WRITE_START_NOTIFICATION(); + WRITE_BASE(AAUDIO_MSG_NOTIFICATION_ALIVE); + WRITE_VAL(u32, proto_ver); + WRITE_VAL(u32, msg_ver); + WRITE_END(); +} + +void aaudio_msg_write_update_timestamp_response(struct aaudio_msg *msg) +{ + WRITE_START_RESPONSE(); + WRITE_BASE(AAUDIO_MSG_UPDATE_TIMESTAMP_RESPONSE); + WRITE_END(); +} + +void aaudio_msg_write_get_device_list(struct aaudio_msg *msg) +{ + WRITE_START_COMMAND(0); + WRITE_BASE(AAUDIO_MSG_GET_DEVICE_LIST); + WRITE_END(); +} + +#define CMD_SHARED_VARS_NO_REPLY \ + int status = 0; \ + struct aaudio_send_ctx sctx; +#define CMD_SHARED_VARS \ + CMD_SHARED_VARS_NO_REPLY \ + struct aaudio_msg reply = aaudio_reply_alloc(); \ + struct aaudio_msg *buf = &reply; +#define CMD_SEND_REQUEST(fn, ...) \ + if ((status = aaudio_send_cmd_sync(a, &sctx, buf, 500, fn, ##__VA_ARGS__))) \ + return status; +#define CMD_DEF_SHARED_AND_SEND(fn, ...) \ + CMD_SHARED_VARS \ + CMD_SEND_REQUEST(fn, ##__VA_ARGS__); +#define CMD_DEF_SHARED_NO_REPLY_AND_SEND(fn, ...) \ + CMD_SHARED_VARS_NO_REPLY \ + CMD_SEND_REQUEST(fn, ##__VA_ARGS__); +#define CMD_HNDL_REPLY_NO_FREE(fn, ...) \ + status = fn(buf, ##__VA_ARGS__); \ + return status; +#define CMD_HNDL_REPLY_AND_FREE(fn, ...) \ + status = fn(buf, ##__VA_ARGS__); \ + aaudio_reply_free(&reply); \ + return status; + +int aaudio_cmd_start_io(struct aaudio_device *a, aaudio_device_id_t devid) +{ + CMD_DEF_SHARED_AND_SEND(aaudio_msg_write_start_io, devid); + CMD_HNDL_REPLY_AND_FREE(aaudio_msg_read_start_io_response); +} +int aaudio_cmd_stop_io(struct aaudio_device *a, aaudio_device_id_t devid) +{ + CMD_DEF_SHARED_AND_SEND(aaudio_msg_write_stop_io, devid); + CMD_HNDL_REPLY_AND_FREE(aaudio_msg_read_stop_io_response); +} +int aaudio_cmd_get_property(struct aaudio_device *a, struct aaudio_msg *buf, + aaudio_device_id_t devid, aaudio_object_id_t obj, + struct aaudio_prop_addr prop, void *qualifier, u64 qualifier_size, void **data, u64 *data_size) +{ + CMD_DEF_SHARED_NO_REPLY_AND_SEND(aaudio_msg_write_get_property, devid, obj, prop, qualifier, qualifier_size); + CMD_HNDL_REPLY_NO_FREE(aaudio_msg_read_get_property_response, &obj, &prop, data, data_size); +} +int aaudio_cmd_get_primitive_property(struct aaudio_device *a, + aaudio_device_id_t devid, aaudio_object_id_t obj, + struct aaudio_prop_addr prop, void *qualifier, u64 qualifier_size, void *data, u64 data_size) +{ + int status; + struct aaudio_msg reply = aaudio_reply_alloc(); + void *r_data; + u64 r_data_size; + if ((status = aaudio_cmd_get_property(a, &reply, devid, obj, prop, qualifier, qualifier_size, + &r_data, &r_data_size))) + goto finish; + if (r_data_size != data_size) { + status = -EINVAL; + goto finish; + } + memcpy(data, r_data, data_size); +finish: + aaudio_reply_free(&reply); + return status; +} +int aaudio_cmd_set_property(struct aaudio_device *a, aaudio_device_id_t devid, aaudio_object_id_t obj, + struct aaudio_prop_addr prop, void *qualifier, u64 qualifier_size, void *data, u64 data_size) +{ + CMD_DEF_SHARED_AND_SEND(aaudio_msg_write_set_property, devid, obj, prop, data, data_size, + qualifier, qualifier_size); + CMD_HNDL_REPLY_AND_FREE(aaudio_msg_read_set_property_response, &obj); +} +int aaudio_cmd_property_listener(struct aaudio_device *a, aaudio_device_id_t devid, aaudio_object_id_t obj, + struct aaudio_prop_addr prop) +{ + CMD_DEF_SHARED_AND_SEND(aaudio_msg_write_property_listener, devid, obj, prop); + CMD_HNDL_REPLY_AND_FREE(aaudio_msg_read_property_listener_response, &obj, &prop); +} +int aaudio_cmd_set_input_stream_address_ranges(struct aaudio_device *a, aaudio_device_id_t devid) +{ + CMD_DEF_SHARED_AND_SEND(aaudio_msg_write_set_input_stream_address_ranges, devid); + CMD_HNDL_REPLY_AND_FREE(aaudio_msg_read_set_input_stream_address_ranges_response); +} +int aaudio_cmd_get_input_stream_list(struct aaudio_device *a, struct aaudio_msg *buf, aaudio_device_id_t devid, + aaudio_object_id_t **str_l, u64 *str_cnt) +{ + CMD_DEF_SHARED_NO_REPLY_AND_SEND(aaudio_msg_write_get_input_stream_list, devid); + CMD_HNDL_REPLY_NO_FREE(aaudio_msg_read_get_input_stream_list_response, str_l, str_cnt); +} +int aaudio_cmd_get_output_stream_list(struct aaudio_device *a, struct aaudio_msg *buf, aaudio_device_id_t devid, + aaudio_object_id_t **str_l, u64 *str_cnt) +{ + CMD_DEF_SHARED_NO_REPLY_AND_SEND(aaudio_msg_write_get_output_stream_list, devid); + CMD_HNDL_REPLY_NO_FREE(aaudio_msg_read_get_output_stream_list_response, str_l, str_cnt); +} +int aaudio_cmd_set_remote_access(struct aaudio_device *a, u64 mode) +{ + CMD_DEF_SHARED_AND_SEND(aaudio_msg_write_set_remote_access, mode); + CMD_HNDL_REPLY_AND_FREE(aaudio_msg_read_set_remote_access_response); +} +int aaudio_cmd_get_device_list(struct aaudio_device *a, struct aaudio_msg *buf, + aaudio_device_id_t **dev_l, u64 *dev_cnt) +{ + CMD_DEF_SHARED_NO_REPLY_AND_SEND(aaudio_msg_write_get_device_list); + CMD_HNDL_REPLY_NO_FREE(aaudio_msg_read_get_device_list_response, dev_l, dev_cnt); +} \ No newline at end of file diff --git a/drivers/staging/apple-bce/audio/protocol.h b/drivers/staging/apple-bce/audio/protocol.h new file mode 100644 index 000000000000..3427486f3f57 --- /dev/null +++ b/drivers/staging/apple-bce/audio/protocol.h @@ -0,0 +1,147 @@ +#ifndef AAUDIO_PROTOCOL_H +#define AAUDIO_PROTOCOL_H + +#include + +struct aaudio_device; + +typedef u64 aaudio_device_id_t; +typedef u64 aaudio_object_id_t; + +struct aaudio_msg { + void *data; + size_t size; +}; + +struct __attribute__((packed)) aaudio_msg_header { + char tag[4]; + u8 type; + aaudio_device_id_t device_id; // Idk, use zero for commands? +}; +struct __attribute__((packed)) aaudio_msg_base { + u32 msg; + u32 status; +}; + +struct aaudio_prop_addr { + u32 scope; + u32 selector; + u32 element; +}; +#define AAUDIO_PROP(scope, sel, el) (struct aaudio_prop_addr) { scope, sel, el } + +enum { + AAUDIO_MSG_TYPE_COMMAND = 1, + AAUDIO_MSG_TYPE_RESPONSE = 2, + AAUDIO_MSG_TYPE_NOTIFICATION = 3 +}; + +enum { + AAUDIO_MSG_START_IO = 0, + AAUDIO_MSG_START_IO_RESPONSE = 1, + AAUDIO_MSG_STOP_IO = 2, + AAUDIO_MSG_STOP_IO_RESPONSE = 3, + AAUDIO_MSG_UPDATE_TIMESTAMP = 4, + AAUDIO_MSG_GET_PROPERTY = 7, + AAUDIO_MSG_GET_PROPERTY_RESPONSE = 8, + AAUDIO_MSG_SET_PROPERTY = 9, + AAUDIO_MSG_SET_PROPERTY_RESPONSE = 10, + AAUDIO_MSG_PROPERTY_LISTENER = 11, + AAUDIO_MSG_PROPERTY_LISTENER_RESPONSE = 12, + AAUDIO_MSG_PROPERTY_CHANGED = 13, + AAUDIO_MSG_SET_INPUT_STREAM_ADDRESS_RANGES = 18, + AAUDIO_MSG_SET_INPUT_STREAM_ADDRESS_RANGES_RESPONSE = 19, + AAUDIO_MSG_GET_INPUT_STREAM_LIST = 24, + AAUDIO_MSG_GET_INPUT_STREAM_LIST_RESPONSE = 25, + AAUDIO_MSG_GET_OUTPUT_STREAM_LIST = 26, + AAUDIO_MSG_GET_OUTPUT_STREAM_LIST_RESPONSE = 27, + AAUDIO_MSG_SET_REMOTE_ACCESS = 32, + AAUDIO_MSG_SET_REMOTE_ACCESS_RESPONSE = 33, + AAUDIO_MSG_UPDATE_TIMESTAMP_RESPONSE = 34, + + AAUDIO_MSG_NOTIFICATION_ALIVE = 100, + AAUDIO_MSG_GET_DEVICE_LIST = 101, + AAUDIO_MSG_GET_DEVICE_LIST_RESPONSE = 102, + AAUDIO_MSG_NOTIFICATION_BOOT = 104 +}; + +enum { + AAUDIO_REMOTE_ACCESS_OFF = 0, + AAUDIO_REMOTE_ACCESS_ON = 2 +}; + +enum { + AAUDIO_PROP_SCOPE_GLOBAL = 0x676c6f62, // 'glob' + AAUDIO_PROP_SCOPE_INPUT = 0x696e7074, // 'inpt' + AAUDIO_PROP_SCOPE_OUTPUT = 0x6f757470 // 'outp' +}; + +enum { + AAUDIO_PROP_UID = 0x75696420, // 'uid ' + AAUDIO_PROP_BOOL_VALUE = 0x6263766c, // 'bcvl' + AAUDIO_PROP_JACK_PLUGGED = 0x6a61636b, // 'jack' + AAUDIO_PROP_SEL_VOLUME = 0x64656176, // 'deav' + AAUDIO_PROP_LATENCY = 0x6c746e63, // 'ltnc' + AAUDIO_PROP_PHYS_FORMAT = 0x70667420 // 'pft ' +}; + +int aaudio_msg_read_base(struct aaudio_msg *msg, struct aaudio_msg_base *base); + +int aaudio_msg_read_start_io_response(struct aaudio_msg *msg); +int aaudio_msg_read_stop_io_response(struct aaudio_msg *msg); +int aaudio_msg_read_update_timestamp(struct aaudio_msg *msg, aaudio_device_id_t *devid, + u64 *timestamp, u64 *update_seed); +int aaudio_msg_read_get_property_response(struct aaudio_msg *msg, aaudio_object_id_t *obj, + struct aaudio_prop_addr *prop, void **data, u64 *data_size); +int aaudio_msg_read_set_property_response(struct aaudio_msg *msg, aaudio_object_id_t *obj); +int aaudio_msg_read_property_listener_response(struct aaudio_msg *msg,aaudio_object_id_t *obj, + struct aaudio_prop_addr *prop); +int aaudio_msg_read_property_changed(struct aaudio_msg *msg, aaudio_device_id_t *devid, aaudio_object_id_t *obj, + struct aaudio_prop_addr *prop); +int aaudio_msg_read_set_input_stream_address_ranges_response(struct aaudio_msg *msg); +int aaudio_msg_read_get_input_stream_list_response(struct aaudio_msg *msg, aaudio_object_id_t **str_l, u64 *str_cnt); +int aaudio_msg_read_get_output_stream_list_response(struct aaudio_msg *msg, aaudio_object_id_t **str_l, u64 *str_cnt); +int aaudio_msg_read_set_remote_access_response(struct aaudio_msg *msg); +int aaudio_msg_read_get_device_list_response(struct aaudio_msg *msg, aaudio_device_id_t **dev_l, u64 *dev_cnt); + +void aaudio_msg_write_start_io(struct aaudio_msg *msg, aaudio_device_id_t dev); +void aaudio_msg_write_stop_io(struct aaudio_msg *msg, aaudio_device_id_t dev); +void aaudio_msg_write_get_property(struct aaudio_msg *msg, aaudio_device_id_t dev, aaudio_object_id_t obj, + struct aaudio_prop_addr prop, void *qualifier, u64 qualifier_size); +void aaudio_msg_write_set_property(struct aaudio_msg *msg, aaudio_device_id_t dev, aaudio_object_id_t obj, + struct aaudio_prop_addr prop, void *data, u64 data_size, void *qualifier, u64 qualifier_size); +void aaudio_msg_write_property_listener(struct aaudio_msg *msg, aaudio_device_id_t dev, aaudio_object_id_t obj, + struct aaudio_prop_addr prop); +void aaudio_msg_write_set_input_stream_address_ranges(struct aaudio_msg *msg, aaudio_device_id_t devid); +void aaudio_msg_write_get_input_stream_list(struct aaudio_msg *msg, aaudio_device_id_t devid); +void aaudio_msg_write_get_output_stream_list(struct aaudio_msg *msg, aaudio_device_id_t devid); +void aaudio_msg_write_set_remote_access(struct aaudio_msg *msg, u64 mode); +void aaudio_msg_write_alive_notification(struct aaudio_msg *msg, u32 proto_ver, u32 msg_ver); +void aaudio_msg_write_update_timestamp_response(struct aaudio_msg *msg); +void aaudio_msg_write_get_device_list(struct aaudio_msg *msg); + + +int aaudio_cmd_start_io(struct aaudio_device *a, aaudio_device_id_t devid); +int aaudio_cmd_stop_io(struct aaudio_device *a, aaudio_device_id_t devid); +int aaudio_cmd_get_property(struct aaudio_device *a, struct aaudio_msg *buf, + aaudio_device_id_t devid, aaudio_object_id_t obj, + struct aaudio_prop_addr prop, void *qualifier, u64 qualifier_size, void **data, u64 *data_size); +int aaudio_cmd_get_primitive_property(struct aaudio_device *a, + aaudio_device_id_t devid, aaudio_object_id_t obj, + struct aaudio_prop_addr prop, void *qualifier, u64 qualifier_size, void *data, u64 data_size); +int aaudio_cmd_set_property(struct aaudio_device *a, aaudio_device_id_t devid, aaudio_object_id_t obj, + struct aaudio_prop_addr prop, void *qualifier, u64 qualifier_size, void *data, u64 data_size); +int aaudio_cmd_property_listener(struct aaudio_device *a, aaudio_device_id_t devid, aaudio_object_id_t obj, + struct aaudio_prop_addr prop); +int aaudio_cmd_set_input_stream_address_ranges(struct aaudio_device *a, aaudio_device_id_t devid); +int aaudio_cmd_get_input_stream_list(struct aaudio_device *a, struct aaudio_msg *buf, aaudio_device_id_t devid, + aaudio_object_id_t **str_l, u64 *str_cnt); +int aaudio_cmd_get_output_stream_list(struct aaudio_device *a, struct aaudio_msg *buf, aaudio_device_id_t devid, + aaudio_object_id_t **str_l, u64 *str_cnt); +int aaudio_cmd_set_remote_access(struct aaudio_device *a, u64 mode); +int aaudio_cmd_get_device_list(struct aaudio_device *a, struct aaudio_msg *buf, + aaudio_device_id_t **dev_l, u64 *dev_cnt); + + + +#endif //AAUDIO_PROTOCOL_H diff --git a/drivers/staging/apple-bce/audio/protocol_bce.c b/drivers/staging/apple-bce/audio/protocol_bce.c new file mode 100644 index 000000000000..28f2dfd44d67 --- /dev/null +++ b/drivers/staging/apple-bce/audio/protocol_bce.c @@ -0,0 +1,226 @@ +#include "protocol_bce.h" + +#include "audio.h" + +static void aaudio_bce_out_queue_completion(struct bce_queue_sq *sq); +static void aaudio_bce_in_queue_completion(struct bce_queue_sq *sq); +static int aaudio_bce_queue_init(struct aaudio_device *dev, struct aaudio_bce_queue *q, const char *name, int direction, + bce_sq_completion cfn); +void aaudio_bce_in_queue_submit_pending(struct aaudio_bce_queue *q, size_t count); + +int aaudio_bce_init(struct aaudio_device *dev) +{ + int status; + struct aaudio_bce *bce = &dev->bcem; + bce->cq = bce_create_cq(dev->bce, 0x80); + spin_lock_init(&bce->spinlock); + if (!bce->cq) + return -EINVAL; + if ((status = aaudio_bce_queue_init(dev, &bce->qout, "com.apple.BridgeAudio.IntelToARM", DMA_TO_DEVICE, + aaudio_bce_out_queue_completion))) { + return status; + } + if ((status = aaudio_bce_queue_init(dev, &bce->qin, "com.apple.BridgeAudio.ARMToIntel", DMA_FROM_DEVICE, + aaudio_bce_in_queue_completion))) { + return status; + } + aaudio_bce_in_queue_submit_pending(&bce->qin, bce->qin.el_count); + return 0; +} + +int aaudio_bce_queue_init(struct aaudio_device *dev, struct aaudio_bce_queue *q, const char *name, int direction, + bce_sq_completion cfn) +{ + q->cq = dev->bcem.cq; + q->el_size = AAUDIO_BCE_QUEUE_ELEMENT_SIZE; + q->el_count = AAUDIO_BCE_QUEUE_ELEMENT_COUNT; + /* NOTE: The Apple impl uses 0x80 as the queue size, however we use 21 (in fact 20) to simplify the impl */ + q->sq = bce_create_sq(dev->bce, q->cq, name, (u32) (q->el_count + 1), direction, cfn, dev); + if (!q->sq) + return -EINVAL; + + q->data = dma_alloc_coherent(&dev->bce->pci->dev, q->el_size * q->el_count, &q->dma_addr, GFP_KERNEL); + if (!q->data) { + bce_destroy_sq(dev->bce, q->sq); + return -EINVAL; + } + return 0; +} + +static void aaudio_send_create_tag(struct aaudio_bce *b, int *tagn, char tag[4]) +{ + char tag_zero[5]; + b->tag_num = (b->tag_num + 1) % AAUDIO_BCE_QUEUE_TAG_COUNT; + *tagn = b->tag_num; + snprintf(tag_zero, 5, "S%03d", b->tag_num); + *((u32 *) tag) = *((u32 *) tag_zero); +} + +int __aaudio_send_prepare(struct aaudio_bce *b, struct aaudio_send_ctx *ctx, char *tag) +{ + int status; + size_t index; + void *dptr; + struct aaudio_msg_header *header; + if ((status = bce_reserve_submission(b->qout.sq, &ctx->timeout))) + return status; + spin_lock_irqsave(&b->spinlock, ctx->irq_flags); + index = b->qout.data_tail; + dptr = (u8 *) b->qout.data + index * b->qout.el_size; + ctx->msg.data = dptr; + header = dptr; + if (tag) + *((u32 *) header->tag) = *((u32 *) tag); + else + aaudio_send_create_tag(b, &ctx->tag_n, header->tag); + return 0; +} + +void __aaudio_send(struct aaudio_bce *b, struct aaudio_send_ctx *ctx) +{ + struct bce_qe_submission *s = bce_next_submission(b->qout.sq); +#ifdef DEBUG + pr_debug("aaudio: Sending command data\n"); + print_hex_dump(KERN_DEBUG, "aaudio:OUT ", DUMP_PREFIX_NONE, 32, 1, ctx->msg.data, ctx->msg.size, true); +#endif + bce_set_submission_single(s, b->qout.dma_addr + (dma_addr_t) (ctx->msg.data - b->qout.data), ctx->msg.size); + bce_submit_to_device(b->qout.sq); + b->qout.data_tail = (b->qout.data_tail + 1) % b->qout.el_count; + spin_unlock_irqrestore(&b->spinlock, ctx->irq_flags); +} + +int __aaudio_send_cmd_sync(struct aaudio_bce *b, struct aaudio_send_ctx *ctx, struct aaudio_msg *reply) +{ + struct aaudio_bce_queue_entry ent; + DECLARE_COMPLETION_ONSTACK(cmpl); + ent.msg = reply; + ent.cmpl = &cmpl; + b->pending_entries[ctx->tag_n] = &ent; + __aaudio_send(b, ctx); /* unlocks the spinlock */ + ctx->timeout = wait_for_completion_timeout(&cmpl, ctx->timeout); + if (ctx->timeout == 0) { + /* Remove the pending queue entry; this will be normally handled by the completion route but + * during a timeout it won't */ + spin_lock_irqsave(&b->spinlock, ctx->irq_flags); + if (b->pending_entries[ctx->tag_n] == &ent) + b->pending_entries[ctx->tag_n] = NULL; + spin_unlock_irqrestore(&b->spinlock, ctx->irq_flags); + return -ETIMEDOUT; + } + return 0; +} + +static void aaudio_handle_reply(struct aaudio_bce *b, struct aaudio_msg *reply) +{ + const char *tag; + int tagn; + unsigned long irq_flags; + char tag_zero[5]; + struct aaudio_bce_queue_entry *entry; + + tag = ((struct aaudio_msg_header *) reply->data)->tag; + if (tag[0] != 'S') { + pr_err("aaudio_handle_reply: Unexpected tag: %.4s\n", tag); + return; + } + *((u32 *) tag_zero) = *((u32 *) tag); + tag_zero[4] = 0; + if (kstrtoint(&tag_zero[1], 10, &tagn)) { + pr_err("aaudio_handle_reply: Tag parse failed: %.4s\n", tag); + return; + } + + spin_lock_irqsave(&b->spinlock, irq_flags); + entry = b->pending_entries[tagn]; + if (entry) { + if (reply->size < entry->msg->size) + entry->msg->size = reply->size; + memcpy(entry->msg->data, reply->data, entry->msg->size); + complete(entry->cmpl); + + b->pending_entries[tagn] = NULL; + } else { + pr_err("aaudio_handle_reply: No queued item found for tag: %.4s\n", tag); + } + spin_unlock_irqrestore(&b->spinlock, irq_flags); +} + +static void aaudio_bce_out_queue_completion(struct bce_queue_sq *sq) +{ + while (bce_next_completion(sq)) { + //pr_info("aaudio: Send confirmed\n"); + bce_notify_submission_complete(sq); + } +} + +static void aaudio_bce_in_queue_handle_msg(struct aaudio_device *a, struct aaudio_msg *msg); + +static void aaudio_bce_in_queue_completion(struct bce_queue_sq *sq) +{ + struct aaudio_msg msg; + struct aaudio_device *dev = sq->userdata; + struct aaudio_bce_queue *q = &dev->bcem.qin; + struct bce_sq_completion_data *c; + size_t cnt = 0; + + mb(); + while ((c = bce_next_completion(sq))) { + msg.data = (u8 *) q->data + q->data_head * q->el_size; + msg.size = c->data_size; +#ifdef DEBUG + pr_debug("aaudio: Received command data %llx\n", c->data_size); + print_hex_dump(KERN_DEBUG, "aaudio:IN ", DUMP_PREFIX_NONE, 32, 1, msg.data, min(msg.size, 128UL), true); +#endif + aaudio_bce_in_queue_handle_msg(dev, &msg); + + q->data_head = (q->data_head + 1) % q->el_count; + + bce_notify_submission_complete(sq); + ++cnt; + } + aaudio_bce_in_queue_submit_pending(q, cnt); +} + +static void aaudio_bce_in_queue_handle_msg(struct aaudio_device *a, struct aaudio_msg *msg) +{ + struct aaudio_msg_header *header = (struct aaudio_msg_header *) msg->data; + if (msg->size < sizeof(struct aaudio_msg_header)) { + pr_err("aaudio: Msg size smaller than header (%lx)", msg->size); + return; + } + if (header->type == AAUDIO_MSG_TYPE_RESPONSE) { + aaudio_handle_reply(&a->bcem, msg); + } else if (header->type == AAUDIO_MSG_TYPE_COMMAND) { + aaudio_handle_command(a, msg); + } else if (header->type == AAUDIO_MSG_TYPE_NOTIFICATION) { + aaudio_handle_notification(a, msg); + } +} + +void aaudio_bce_in_queue_submit_pending(struct aaudio_bce_queue *q, size_t count) +{ + struct bce_qe_submission *s; + while (count--) { + if (bce_reserve_submission(q->sq, NULL)) { + pr_err("aaudio: Failed to reserve an event queue submission\n"); + break; + } + s = bce_next_submission(q->sq); + bce_set_submission_single(s, q->dma_addr + (dma_addr_t) (q->data_tail * q->el_size), q->el_size); + q->data_tail = (q->data_tail + 1) % q->el_count; + } + bce_submit_to_device(q->sq); +} + +struct aaudio_msg aaudio_reply_alloc(void) +{ + struct aaudio_msg ret; + ret.size = AAUDIO_BCE_QUEUE_ELEMENT_SIZE; + ret.data = kmalloc(ret.size, GFP_KERNEL); + return ret; +} + +void aaudio_reply_free(struct aaudio_msg *reply) +{ + kfree(reply->data); +} diff --git a/drivers/staging/apple-bce/audio/protocol_bce.h b/drivers/staging/apple-bce/audio/protocol_bce.h new file mode 100644 index 000000000000..14d26c05ddf9 --- /dev/null +++ b/drivers/staging/apple-bce/audio/protocol_bce.h @@ -0,0 +1,72 @@ +#ifndef AAUDIO_PROTOCOL_BCE_H +#define AAUDIO_PROTOCOL_BCE_H + +#include "protocol.h" +#include "../queue.h" + +#define AAUDIO_BCE_QUEUE_ELEMENT_SIZE 0x1000 +#define AAUDIO_BCE_QUEUE_ELEMENT_COUNT 20 + +#define AAUDIO_BCE_QUEUE_TAG_COUNT 1000 + +struct aaudio_device; + +struct aaudio_bce_queue_entry { + struct aaudio_msg *msg; + struct completion *cmpl; +}; +struct aaudio_bce_queue { + struct bce_queue_cq *cq; + struct bce_queue_sq *sq; + void *data; + dma_addr_t dma_addr; + size_t data_head, data_tail; + size_t el_size, el_count; +}; +struct aaudio_bce { + struct bce_queue_cq *cq; + struct aaudio_bce_queue qin; + struct aaudio_bce_queue qout; + int tag_num; + struct aaudio_bce_queue_entry *pending_entries[AAUDIO_BCE_QUEUE_TAG_COUNT]; + struct spinlock spinlock; +}; + +struct aaudio_send_ctx { + int status; + int tag_n; + unsigned long irq_flags; + struct aaudio_msg msg; + unsigned long timeout; +}; + +int aaudio_bce_init(struct aaudio_device *dev); +int __aaudio_send_prepare(struct aaudio_bce *b, struct aaudio_send_ctx *ctx, char *tag); +void __aaudio_send(struct aaudio_bce *b, struct aaudio_send_ctx *ctx); +int __aaudio_send_cmd_sync(struct aaudio_bce *b, struct aaudio_send_ctx *ctx, struct aaudio_msg *reply); + +#define aaudio_send_with_tag(a, ctx, tag, tout, fn, ...) ({ \ + (ctx)->timeout = msecs_to_jiffies(tout); \ + (ctx)->status = __aaudio_send_prepare(&(a)->bcem, (ctx), (tag)); \ + if (!(ctx)->status) { \ + fn(&(ctx)->msg, ##__VA_ARGS__); \ + __aaudio_send(&(a)->bcem, (ctx)); \ + } \ + (ctx)->status; \ +}) +#define aaudio_send(a, ctx, tout, fn, ...) aaudio_send_with_tag(a, ctx, NULL, tout, fn, ##__VA_ARGS__) + +#define aaudio_send_cmd_sync(a, ctx, reply, tout, fn, ...) ({ \ + (ctx)->timeout = msecs_to_jiffies(tout); \ + (ctx)->status = __aaudio_send_prepare(&(a)->bcem, (ctx), NULL); \ + if (!(ctx)->status) { \ + fn(&(ctx)->msg, ##__VA_ARGS__); \ + (ctx)->status = __aaudio_send_cmd_sync(&(a)->bcem, (ctx), (reply)); \ + } \ + (ctx)->status; \ +}) + +struct aaudio_msg aaudio_reply_alloc(void); +void aaudio_reply_free(struct aaudio_msg *reply); + +#endif //AAUDIO_PROTOCOL_BCE_H diff --git a/drivers/staging/apple-bce/mailbox.c b/drivers/staging/apple-bce/mailbox.c new file mode 100644 index 000000000000..e24bd35215c0 --- /dev/null +++ b/drivers/staging/apple-bce/mailbox.c @@ -0,0 +1,151 @@ +#include "mailbox.h" +#include +#include "apple_bce.h" + +#define REG_MBOX_OUT_BASE 0x820 +#define REG_MBOX_REPLY_COUNTER 0x108 +#define REG_MBOX_REPLY_BASE 0x810 +#define REG_TIMESTAMP_BASE 0xC000 + +#define BCE_MBOX_TIMEOUT_MS 200 + +void bce_mailbox_init(struct bce_mailbox *mb, void __iomem *reg_mb) +{ + mb->reg_mb = reg_mb; + init_completion(&mb->mb_completion); +} + +int bce_mailbox_send(struct bce_mailbox *mb, u64 msg, u64* recv) +{ + u32 __iomem *regb; + + if (atomic_cmpxchg(&mb->mb_status, 0, 1) != 0) { + return -EEXIST; // We don't support two messages at once + } + reinit_completion(&mb->mb_completion); + + pr_debug("bce_mailbox_send: %llx\n", msg); + regb = (u32*) ((u8*) mb->reg_mb + REG_MBOX_OUT_BASE); + iowrite32((u32) msg, regb); + iowrite32((u32) (msg >> 32), regb + 1); + iowrite32(0, regb + 2); + iowrite32(0, regb + 3); + + wait_for_completion_timeout(&mb->mb_completion, msecs_to_jiffies(BCE_MBOX_TIMEOUT_MS)); + if (atomic_read(&mb->mb_status) != 2) { // Didn't get the reply + atomic_set(&mb->mb_status, 0); + return -ETIMEDOUT; + } + + *recv = mb->mb_result; + pr_debug("bce_mailbox_send: reply %llx\n", *recv); + + atomic_set(&mb->mb_status, 0); + return 0; +} + +static int bce_mailbox_retrive_response(struct bce_mailbox *mb) +{ + u32 __iomem *regb; + u32 lo, hi; + int count, counter; + u32 res = ioread32((u8*) mb->reg_mb + REG_MBOX_REPLY_COUNTER); + count = (res >> 20) & 0xf; + counter = count; + pr_debug("bce_mailbox_retrive_response count=%i\n", count); + while (counter--) { + regb = (u32*) ((u8*) mb->reg_mb + REG_MBOX_REPLY_BASE); + lo = ioread32(regb); + hi = ioread32(regb + 1); + ioread32(regb + 2); + ioread32(regb + 3); + pr_debug("bce_mailbox_retrive_response %llx\n", ((u64) hi << 32) | lo); + mb->mb_result = ((u64) hi << 32) | lo; + } + return count > 0 ? 0 : -ENODATA; +} + +int bce_mailbox_handle_interrupt(struct bce_mailbox *mb) +{ + int status = bce_mailbox_retrive_response(mb); + if (!status) { + atomic_set(&mb->mb_status, 2); + complete(&mb->mb_completion); + } + return status; +} + +static void bc_send_timestamp(struct timer_list *tl); + +void bce_timestamp_init(struct bce_timestamp *ts, void __iomem *reg) +{ + u32 __iomem *regb; + + spin_lock_init(&ts->stop_sl); + ts->stopped = false; + + ts->reg = reg; + + regb = (u32*) ((u8*) ts->reg + REG_TIMESTAMP_BASE); + + ioread32(regb); + mb(); + + timer_setup(&ts->timer, bc_send_timestamp, 0); +} + +void bce_timestamp_start(struct bce_timestamp *ts, bool is_initial) +{ + unsigned long flags; + u32 __iomem *regb = (u32*) ((u8*) ts->reg + REG_TIMESTAMP_BASE); + + if (is_initial) { + iowrite32((u32) -4, regb + 2); + iowrite32((u32) -1, regb); + } else { + iowrite32((u32) -3, regb + 2); + iowrite32((u32) -1, regb); + } + + spin_lock_irqsave(&ts->stop_sl, flags); + ts->stopped = false; + spin_unlock_irqrestore(&ts->stop_sl, flags); + mod_timer(&ts->timer, jiffies + msecs_to_jiffies(150)); +} + +void bce_timestamp_stop(struct bce_timestamp *ts) +{ + unsigned long flags; + u32 __iomem *regb = (u32*) ((u8*) ts->reg + REG_TIMESTAMP_BASE); + + spin_lock_irqsave(&ts->stop_sl, flags); + ts->stopped = true; + spin_unlock_irqrestore(&ts->stop_sl, flags); + del_timer_sync(&ts->timer); + + iowrite32((u32) -2, regb + 2); + iowrite32((u32) -1, regb); +} + +static void bc_send_timestamp(struct timer_list *tl) +{ + struct bce_timestamp *ts; + unsigned long flags; + u32 __iomem *regb; + ktime_t bt; + + ts = container_of(tl, struct bce_timestamp, timer); + regb = (u32*) ((u8*) ts->reg + REG_TIMESTAMP_BASE); + local_irq_save(flags); + ioread32(regb + 2); + mb(); + bt = ktime_get_boottime(); + iowrite32((u32) bt, regb + 2); + iowrite32((u32) (bt >> 32), regb); + + spin_lock(&ts->stop_sl); + if (!ts->stopped) + mod_timer(&ts->timer, jiffies + msecs_to_jiffies(150)); + spin_unlock(&ts->stop_sl); + local_irq_restore(flags); +} \ No newline at end of file diff --git a/drivers/staging/apple-bce/mailbox.h b/drivers/staging/apple-bce/mailbox.h new file mode 100644 index 000000000000..f3323f95ba51 --- /dev/null +++ b/drivers/staging/apple-bce/mailbox.h @@ -0,0 +1,53 @@ +#ifndef BCE_MAILBOX_H +#define BCE_MAILBOX_H + +#include +#include +#include + +struct bce_mailbox { + void __iomem *reg_mb; + + atomic_t mb_status; // possible statuses: 0 (no msg), 1 (has active msg), 2 (got reply) + struct completion mb_completion; + uint64_t mb_result; +}; + +enum bce_message_type { + BCE_MB_REGISTER_COMMAND_SQ = 0x7, // to-device + BCE_MB_REGISTER_COMMAND_CQ = 0x8, // to-device + BCE_MB_REGISTER_COMMAND_QUEUE_REPLY = 0xB, // to-host + BCE_MB_SET_FW_PROTOCOL_VERSION = 0xC, // both + BCE_MB_SLEEP_NO_STATE = 0x14, // to-device + BCE_MB_RESTORE_NO_STATE = 0x15, // to-device + BCE_MB_SAVE_STATE_AND_SLEEP = 0x17, // to-device + BCE_MB_RESTORE_STATE_AND_WAKE = 0x18, // to-device + BCE_MB_SAVE_STATE_AND_SLEEP_FAILURE = 0x19, // from-device + BCE_MB_SAVE_RESTORE_STATE_COMPLETE = 0x1A, // from-device +}; + +#define BCE_MB_MSG(type, value) (((u64) (type) << 58) | ((value) & 0x3FFFFFFFFFFFFFFLL)) +#define BCE_MB_TYPE(v) ((u32) (v >> 58)) +#define BCE_MB_VALUE(v) (v & 0x3FFFFFFFFFFFFFFLL) + +void bce_mailbox_init(struct bce_mailbox *mb, void __iomem *reg_mb); + +int bce_mailbox_send(struct bce_mailbox *mb, u64 msg, u64* recv); + +int bce_mailbox_handle_interrupt(struct bce_mailbox *mb); + + +struct bce_timestamp { + void __iomem *reg; + struct timer_list timer; + struct spinlock stop_sl; + bool stopped; +}; + +void bce_timestamp_init(struct bce_timestamp *ts, void __iomem *reg); + +void bce_timestamp_start(struct bce_timestamp *ts, bool is_initial); + +void bce_timestamp_stop(struct bce_timestamp *ts); + +#endif //BCEDRIVER_MAILBOX_H diff --git a/drivers/staging/apple-bce/queue.c b/drivers/staging/apple-bce/queue.c new file mode 100644 index 000000000000..bc9cd3bc6f0c --- /dev/null +++ b/drivers/staging/apple-bce/queue.c @@ -0,0 +1,390 @@ +#include "queue.h" +#include "apple_bce.h" + +#define REG_DOORBELL_BASE 0x44000 + +struct bce_queue_cq *bce_alloc_cq(struct apple_bce_device *dev, int qid, u32 el_count) +{ + struct bce_queue_cq *q; + q = kzalloc(sizeof(struct bce_queue_cq), GFP_KERNEL); + q->qid = qid; + q->type = BCE_QUEUE_CQ; + q->el_count = el_count; + q->data = dma_alloc_coherent(&dev->pci->dev, el_count * sizeof(struct bce_qe_completion), + &q->dma_handle, GFP_KERNEL); + if (!q->data) { + pr_err("DMA queue memory alloc failed\n"); + kfree(q); + return NULL; + } + return q; +} + +void bce_get_cq_memcfg(struct bce_queue_cq *cq, struct bce_queue_memcfg *cfg) +{ + cfg->qid = (u16) cq->qid; + cfg->el_count = (u16) cq->el_count; + cfg->vector_or_cq = 0; + cfg->_pad = 0; + cfg->addr = cq->dma_handle; + cfg->length = cq->el_count * sizeof(struct bce_qe_completion); +} + +void bce_free_cq(struct apple_bce_device *dev, struct bce_queue_cq *cq) +{ + dma_free_coherent(&dev->pci->dev, cq->el_count * sizeof(struct bce_qe_completion), cq->data, cq->dma_handle); + kfree(cq); +} + +static void bce_handle_cq_completion(struct apple_bce_device *dev, struct bce_qe_completion *e, size_t *ce) +{ + struct bce_queue *target; + struct bce_queue_sq *target_sq; + struct bce_sq_completion_data *cmpl; + if (e->qid >= BCE_MAX_QUEUE_COUNT) { + pr_err("Device sent a response for qid (%u) >= BCE_MAX_QUEUE_COUNT\n", e->qid); + return; + } + target = dev->queues[e->qid]; + if (!target || target->type != BCE_QUEUE_SQ) { + pr_err("Device sent a response for qid (%u), which does not exist\n", e->qid); + return; + } + target_sq = (struct bce_queue_sq *) target; + if (target_sq->completion_tail != e->completion_index) { + pr_err("Completion index mismatch; this is likely going to make this driver unusable\n"); + return; + } + if (!target_sq->has_pending_completions) { + target_sq->has_pending_completions = true; + dev->int_sq_list[(*ce)++] = target_sq; + } + cmpl = &target_sq->completion_data[e->completion_index]; + cmpl->status = e->status; + cmpl->data_size = e->data_size; + cmpl->result = e->result; + wmb(); + target_sq->completion_tail = (target_sq->completion_tail + 1) % target_sq->el_count; +} + +void bce_handle_cq_completions(struct apple_bce_device *dev, struct bce_queue_cq *cq) +{ + size_t ce = 0; + struct bce_qe_completion *e; + struct bce_queue_sq *sq; + e = bce_cq_element(cq, cq->index); + if (!(e->flags & BCE_COMPLETION_FLAG_PENDING)) + return; + mb(); + while (true) { + e = bce_cq_element(cq, cq->index); + if (!(e->flags & BCE_COMPLETION_FLAG_PENDING)) + break; + // pr_info("apple-bce: compl: %i: %i %llx %llx", e->qid, e->status, e->data_size, e->result); + bce_handle_cq_completion(dev, e, &ce); + e->flags = 0; + cq->index = (cq->index + 1) % cq->el_count; + } + mb(); + iowrite32(cq->index, (u32 *) ((u8 *) dev->reg_mem_dma + REG_DOORBELL_BASE) + cq->qid); + while (ce) { + --ce; + sq = dev->int_sq_list[ce]; + sq->completion(sq); + sq->has_pending_completions = false; + } +} + + +struct bce_queue_sq *bce_alloc_sq(struct apple_bce_device *dev, int qid, u32 el_size, u32 el_count, + bce_sq_completion compl, void *userdata) +{ + struct bce_queue_sq *q; + q = kzalloc(sizeof(struct bce_queue_sq), GFP_KERNEL); + q->qid = qid; + q->type = BCE_QUEUE_SQ; + q->el_size = el_size; + q->el_count = el_count; + q->data = dma_alloc_coherent(&dev->pci->dev, el_count * el_size, + &q->dma_handle, GFP_KERNEL); + q->completion = compl; + q->userdata = userdata; + q->completion_data = kzalloc(sizeof(struct bce_sq_completion_data) * el_count, GFP_KERNEL); + q->reg_mem_dma = dev->reg_mem_dma; + atomic_set(&q->available_commands, el_count - 1); + init_completion(&q->available_command_completion); + atomic_set(&q->available_command_completion_waiting_count, 0); + if (!q->data) { + pr_err("DMA queue memory alloc failed\n"); + kfree(q); + return NULL; + } + return q; +} + +void bce_get_sq_memcfg(struct bce_queue_sq *sq, struct bce_queue_cq *cq, struct bce_queue_memcfg *cfg) +{ + cfg->qid = (u16) sq->qid; + cfg->el_count = (u16) sq->el_count; + cfg->vector_or_cq = (u16) cq->qid; + cfg->_pad = 0; + cfg->addr = sq->dma_handle; + cfg->length = sq->el_count * sq->el_size; +} + +void bce_free_sq(struct apple_bce_device *dev, struct bce_queue_sq *sq) +{ + dma_free_coherent(&dev->pci->dev, sq->el_count * sq->el_size, sq->data, sq->dma_handle); + kfree(sq); +} + +int bce_reserve_submission(struct bce_queue_sq *sq, unsigned long *timeout) +{ + while (atomic_dec_if_positive(&sq->available_commands) < 0) { + if (!timeout || !*timeout) + return -EAGAIN; + atomic_inc(&sq->available_command_completion_waiting_count); + *timeout = wait_for_completion_timeout(&sq->available_command_completion, *timeout); + if (!*timeout) { + if (atomic_dec_if_positive(&sq->available_command_completion_waiting_count) < 0) + try_wait_for_completion(&sq->available_command_completion); /* consume the pending completion */ + } + } + return 0; +} + +void bce_cancel_submission_reservation(struct bce_queue_sq *sq) +{ + atomic_inc(&sq->available_commands); +} + +void *bce_next_submission(struct bce_queue_sq *sq) +{ + void *ret = bce_sq_element(sq, sq->tail); + sq->tail = (sq->tail + 1) % sq->el_count; + return ret; +} + +void bce_submit_to_device(struct bce_queue_sq *sq) +{ + mb(); + iowrite32(sq->tail, (u32 *) ((u8 *) sq->reg_mem_dma + REG_DOORBELL_BASE) + sq->qid); +} + +void bce_notify_submission_complete(struct bce_queue_sq *sq) +{ + sq->head = (sq->head + 1) % sq->el_count; + atomic_inc(&sq->available_commands); + if (atomic_dec_if_positive(&sq->available_command_completion_waiting_count) >= 0) { + complete(&sq->available_command_completion); + } +} + +void bce_set_submission_single(struct bce_qe_submission *element, dma_addr_t addr, size_t size) +{ + element->addr = addr; + element->length = size; + element->segl_addr = element->segl_length = 0; +} + +static void bce_cmdq_completion(struct bce_queue_sq *q); + +struct bce_queue_cmdq *bce_alloc_cmdq(struct apple_bce_device *dev, int qid, u32 el_count) +{ + struct bce_queue_cmdq *q; + q = kzalloc(sizeof(struct bce_queue_cmdq), GFP_KERNEL); + q->sq = bce_alloc_sq(dev, qid, BCE_CMD_SIZE, el_count, bce_cmdq_completion, q); + if (!q->sq) { + kfree(q); + return NULL; + } + spin_lock_init(&q->lck); + q->tres = kzalloc(sizeof(struct bce_queue_cmdq_result_el*) * el_count, GFP_KERNEL); + if (!q->tres) { + kfree(q); + return NULL; + } + return q; +} + +void bce_free_cmdq(struct apple_bce_device *dev, struct bce_queue_cmdq *cmdq) +{ + bce_free_sq(dev, cmdq->sq); + kfree(cmdq->tres); + kfree(cmdq); +} + +void bce_cmdq_completion(struct bce_queue_sq *q) +{ + struct bce_queue_cmdq_result_el *el; + struct bce_queue_cmdq *cmdq = q->userdata; + struct bce_sq_completion_data *result; + + spin_lock(&cmdq->lck); + while ((result = bce_next_completion(q))) { + el = cmdq->tres[cmdq->sq->head]; + if (el) { + el->result = result->result; + el->status = result->status; + mb(); + complete(&el->cmpl); + } else { + pr_err("apple-bce: Unexpected command queue completion\n"); + } + cmdq->tres[cmdq->sq->head] = NULL; + bce_notify_submission_complete(q); + } + spin_unlock(&cmdq->lck); +} + +static __always_inline void *bce_cmd_start(struct bce_queue_cmdq *cmdq, struct bce_queue_cmdq_result_el *res) +{ + void *ret; + unsigned long timeout; + init_completion(&res->cmpl); + mb(); + + timeout = msecs_to_jiffies(1000L * 60 * 5); /* wait for up to ~5 minutes */ + if (bce_reserve_submission(cmdq->sq, &timeout)) + return NULL; + + spin_lock(&cmdq->lck); + cmdq->tres[cmdq->sq->tail] = res; + ret = bce_next_submission(cmdq->sq); + return ret; +} + +static __always_inline void bce_cmd_finish(struct bce_queue_cmdq *cmdq, struct bce_queue_cmdq_result_el *res) +{ + bce_submit_to_device(cmdq->sq); + spin_unlock(&cmdq->lck); + + wait_for_completion(&res->cmpl); + mb(); +} + +u32 bce_cmd_register_queue(struct bce_queue_cmdq *cmdq, struct bce_queue_memcfg *cfg, const char *name, bool isdirout) +{ + struct bce_queue_cmdq_result_el res; + struct bce_cmdq_register_memory_queue_cmd *cmd = bce_cmd_start(cmdq, &res); + if (!cmd) + return (u32) -1; + cmd->cmd = BCE_CMD_REGISTER_MEMORY_QUEUE; + cmd->flags = (u16) ((name ? 2 : 0) | (isdirout ? 1 : 0)); + cmd->qid = cfg->qid; + cmd->el_count = cfg->el_count; + cmd->vector_or_cq = cfg->vector_or_cq; + memset(cmd->name, 0, sizeof(cmd->name)); + if (name) { + cmd->name_len = (u16) min(strlen(name), (size_t) sizeof(cmd->name)); + memcpy(cmd->name, name, cmd->name_len); + } else { + cmd->name_len = 0; + } + cmd->addr = cfg->addr; + cmd->length = cfg->length; + + bce_cmd_finish(cmdq, &res); + return res.status; +} + +u32 bce_cmd_unregister_memory_queue(struct bce_queue_cmdq *cmdq, u16 qid) +{ + struct bce_queue_cmdq_result_el res; + struct bce_cmdq_simple_memory_queue_cmd *cmd = bce_cmd_start(cmdq, &res); + if (!cmd) + return (u32) -1; + cmd->cmd = BCE_CMD_UNREGISTER_MEMORY_QUEUE; + cmd->flags = 0; + cmd->qid = qid; + bce_cmd_finish(cmdq, &res); + return res.status; +} + +u32 bce_cmd_flush_memory_queue(struct bce_queue_cmdq *cmdq, u16 qid) +{ + struct bce_queue_cmdq_result_el res; + struct bce_cmdq_simple_memory_queue_cmd *cmd = bce_cmd_start(cmdq, &res); + if (!cmd) + return (u32) -1; + cmd->cmd = BCE_CMD_FLUSH_MEMORY_QUEUE; + cmd->flags = 0; + cmd->qid = qid; + bce_cmd_finish(cmdq, &res); + return res.status; +} + + +struct bce_queue_cq *bce_create_cq(struct apple_bce_device *dev, u32 el_count) +{ + struct bce_queue_cq *cq; + struct bce_queue_memcfg cfg; + int qid = ida_simple_get(&dev->queue_ida, BCE_QUEUE_USER_MIN, BCE_QUEUE_USER_MAX, GFP_KERNEL); + if (qid < 0) + return NULL; + cq = bce_alloc_cq(dev, qid, el_count); + if (!cq) + return NULL; + bce_get_cq_memcfg(cq, &cfg); + if (bce_cmd_register_queue(dev->cmd_cmdq, &cfg, NULL, false) != 0) { + pr_err("apple-bce: CQ registration failed (%i)", qid); + bce_free_cq(dev, cq); + ida_simple_remove(&dev->queue_ida, (uint) qid); + return NULL; + } + dev->queues[qid] = (struct bce_queue *) cq; + return cq; +} + +struct bce_queue_sq *bce_create_sq(struct apple_bce_device *dev, struct bce_queue_cq *cq, const char *name, u32 el_count, + int direction, bce_sq_completion compl, void *userdata) +{ + struct bce_queue_sq *sq; + struct bce_queue_memcfg cfg; + int qid; + if (cq == NULL) + return NULL; /* cq can not be null */ + if (name == NULL) + return NULL; /* name can not be null */ + if (direction != DMA_TO_DEVICE && direction != DMA_FROM_DEVICE) + return NULL; /* unsupported direction */ + qid = ida_simple_get(&dev->queue_ida, BCE_QUEUE_USER_MIN, BCE_QUEUE_USER_MAX, GFP_KERNEL); + if (qid < 0) + return NULL; + sq = bce_alloc_sq(dev, qid, sizeof(struct bce_qe_submission), el_count, compl, userdata); + if (!sq) + return NULL; + bce_get_sq_memcfg(sq, cq, &cfg); + if (bce_cmd_register_queue(dev->cmd_cmdq, &cfg, name, direction != DMA_FROM_DEVICE) != 0) { + pr_err("apple-bce: SQ registration failed (%i)", qid); + bce_free_sq(dev, sq); + ida_simple_remove(&dev->queue_ida, (uint) qid); + return NULL; + } + spin_lock(&dev->queues_lock); + dev->queues[qid] = (struct bce_queue *) sq; + spin_unlock(&dev->queues_lock); + return sq; +} + +void bce_destroy_cq(struct apple_bce_device *dev, struct bce_queue_cq *cq) +{ + if (!dev->is_being_removed && bce_cmd_unregister_memory_queue(dev->cmd_cmdq, (u16) cq->qid)) + pr_err("apple-bce: CQ unregister failed"); + spin_lock(&dev->queues_lock); + dev->queues[cq->qid] = NULL; + spin_unlock(&dev->queues_lock); + ida_simple_remove(&dev->queue_ida, (uint) cq->qid); + bce_free_cq(dev, cq); +} + +void bce_destroy_sq(struct apple_bce_device *dev, struct bce_queue_sq *sq) +{ + if (!dev->is_being_removed && bce_cmd_unregister_memory_queue(dev->cmd_cmdq, (u16) sq->qid)) + pr_err("apple-bce: CQ unregister failed"); + spin_lock(&dev->queues_lock); + dev->queues[sq->qid] = NULL; + spin_unlock(&dev->queues_lock); + ida_simple_remove(&dev->queue_ida, (uint) sq->qid); + bce_free_sq(dev, sq); +} \ No newline at end of file diff --git a/drivers/staging/apple-bce/queue.h b/drivers/staging/apple-bce/queue.h new file mode 100644 index 000000000000..8368ac5dfca8 --- /dev/null +++ b/drivers/staging/apple-bce/queue.h @@ -0,0 +1,177 @@ +#ifndef BCE_QUEUE_H +#define BCE_QUEUE_H + +#include +#include + +#define BCE_CMD_SIZE 0x40 + +struct apple_bce_device; + +enum bce_queue_type { + BCE_QUEUE_CQ, BCE_QUEUE_SQ +}; +struct bce_queue { + int qid; + int type; +}; +struct bce_queue_cq { + int qid; + int type; + u32 el_count; + dma_addr_t dma_handle; + void *data; + + u32 index; +}; +struct bce_queue_sq; +typedef void (*bce_sq_completion)(struct bce_queue_sq *q); +struct bce_sq_completion_data { + u32 status; + u64 data_size; + u64 result; +}; +struct bce_queue_sq { + int qid; + int type; + u32 el_size; + u32 el_count; + dma_addr_t dma_handle; + void *data; + void *userdata; + void __iomem *reg_mem_dma; + + atomic_t available_commands; + struct completion available_command_completion; + atomic_t available_command_completion_waiting_count; + u32 head, tail; + + u32 completion_cidx, completion_tail; + struct bce_sq_completion_data *completion_data; + bool has_pending_completions; + bce_sq_completion completion; +}; + +struct bce_queue_cmdq_result_el { + struct completion cmpl; + u32 status; + u64 result; +}; +struct bce_queue_cmdq { + struct bce_queue_sq *sq; + struct spinlock lck; + struct bce_queue_cmdq_result_el **tres; +}; + +struct bce_queue_memcfg { + u16 qid; + u16 el_count; + u16 vector_or_cq; + u16 _pad; + u64 addr; + u64 length; +}; + +enum bce_qe_completion_status { + BCE_COMPLETION_SUCCESS = 0, + BCE_COMPLETION_ERROR = 1, + BCE_COMPLETION_ABORTED = 2, + BCE_COMPLETION_NO_SPACE = 3, + BCE_COMPLETION_OVERRUN = 4 +}; +enum bce_qe_completion_flags { + BCE_COMPLETION_FLAG_PENDING = 0x8000 +}; +struct bce_qe_completion { + u64 result; + u64 data_size; + u16 qid; + u16 completion_index; + u16 status; // bce_qe_completion_status + u16 flags; // bce_qe_completion_flags +}; + +struct bce_qe_submission { + u64 length; + u64 addr; + + u64 segl_addr; + u64 segl_length; +}; + +enum bce_cmdq_command { + BCE_CMD_REGISTER_MEMORY_QUEUE = 0x20, + BCE_CMD_UNREGISTER_MEMORY_QUEUE = 0x30, + BCE_CMD_FLUSH_MEMORY_QUEUE = 0x40, + BCE_CMD_SET_MEMORY_QUEUE_PROPERTY = 0x50 +}; +struct bce_cmdq_simple_memory_queue_cmd { + u16 cmd; // bce_cmdq_command + u16 flags; + u16 qid; +}; +struct bce_cmdq_register_memory_queue_cmd { + u16 cmd; // bce_cmdq_command + u16 flags; + u16 qid; + u16 _pad; + u16 el_count; + u16 vector_or_cq; + u16 _pad2; + u16 name_len; + char name[0x20]; + u64 addr; + u64 length; +}; + +static __always_inline void *bce_sq_element(struct bce_queue_sq *q, int i) { + return (void *) ((u8 *) q->data + q->el_size * i); +} +static __always_inline void *bce_cq_element(struct bce_queue_cq *q, int i) { + return (void *) ((struct bce_qe_completion *) q->data + i); +} + +static __always_inline struct bce_sq_completion_data *bce_next_completion(struct bce_queue_sq *sq) { + struct bce_sq_completion_data *res; + rmb(); + if (sq->completion_cidx == sq->completion_tail) + return NULL; + res = &sq->completion_data[sq->completion_cidx]; + sq->completion_cidx = (sq->completion_cidx + 1) % sq->el_count; + return res; +} + +struct bce_queue_cq *bce_alloc_cq(struct apple_bce_device *dev, int qid, u32 el_count); +void bce_get_cq_memcfg(struct bce_queue_cq *cq, struct bce_queue_memcfg *cfg); +void bce_free_cq(struct apple_bce_device *dev, struct bce_queue_cq *cq); +void bce_handle_cq_completions(struct apple_bce_device *dev, struct bce_queue_cq *cq); + +struct bce_queue_sq *bce_alloc_sq(struct apple_bce_device *dev, int qid, u32 el_size, u32 el_count, + bce_sq_completion compl, void *userdata); +void bce_get_sq_memcfg(struct bce_queue_sq *sq, struct bce_queue_cq *cq, struct bce_queue_memcfg *cfg); +void bce_free_sq(struct apple_bce_device *dev, struct bce_queue_sq *sq); +int bce_reserve_submission(struct bce_queue_sq *sq, unsigned long *timeout); +void bce_cancel_submission_reservation(struct bce_queue_sq *sq); +void *bce_next_submission(struct bce_queue_sq *sq); +void bce_submit_to_device(struct bce_queue_sq *sq); +void bce_notify_submission_complete(struct bce_queue_sq *sq); + +void bce_set_submission_single(struct bce_qe_submission *element, dma_addr_t addr, size_t size); + +struct bce_queue_cmdq *bce_alloc_cmdq(struct apple_bce_device *dev, int qid, u32 el_count); +void bce_free_cmdq(struct apple_bce_device *dev, struct bce_queue_cmdq *cmdq); + +u32 bce_cmd_register_queue(struct bce_queue_cmdq *cmdq, struct bce_queue_memcfg *cfg, const char *name, bool isdirout); +u32 bce_cmd_unregister_memory_queue(struct bce_queue_cmdq *cmdq, u16 qid); +u32 bce_cmd_flush_memory_queue(struct bce_queue_cmdq *cmdq, u16 qid); + + +/* User API - Creates and registers the queue */ + +struct bce_queue_cq *bce_create_cq(struct apple_bce_device *dev, u32 el_count); +struct bce_queue_sq *bce_create_sq(struct apple_bce_device *dev, struct bce_queue_cq *cq, const char *name, u32 el_count, + int direction, bce_sq_completion compl, void *userdata); +void bce_destroy_cq(struct apple_bce_device *dev, struct bce_queue_cq *cq); +void bce_destroy_sq(struct apple_bce_device *dev, struct bce_queue_sq *sq); + +#endif //BCEDRIVER_MAILBOX_H diff --git a/drivers/staging/apple-bce/queue_dma.c b/drivers/staging/apple-bce/queue_dma.c new file mode 100644 index 000000000000..b236613285c0 --- /dev/null +++ b/drivers/staging/apple-bce/queue_dma.c @@ -0,0 +1,220 @@ +#include "queue_dma.h" +#include +#include +#include "queue.h" + +static int bce_alloc_scatterlist_from_vm(struct sg_table *tbl, void *data, size_t len); +static struct bce_segment_list_element_hostinfo *bce_map_segment_list( + struct device *dev, struct scatterlist *pages, int pagen); +static void bce_unmap_segement_list(struct device *dev, struct bce_segment_list_element_hostinfo *list); + +int bce_map_dma_buffer(struct device *dev, struct bce_dma_buffer *buf, struct sg_table scatterlist, + enum dma_data_direction dir) +{ + int cnt; + + buf->direction = dir; + buf->scatterlist = scatterlist; + buf->seglist_hostinfo = NULL; + + cnt = dma_map_sg(dev, buf->scatterlist.sgl, buf->scatterlist.nents, dir); + if (cnt != buf->scatterlist.nents) { + pr_err("apple-bce: DMA scatter list mapping returned an unexpected count: %i\n", cnt); + dma_unmap_sg(dev, buf->scatterlist.sgl, buf->scatterlist.nents, dir); + return -EIO; + } + if (cnt == 1) + return 0; + + buf->seglist_hostinfo = bce_map_segment_list(dev, buf->scatterlist.sgl, buf->scatterlist.nents); + if (!buf->seglist_hostinfo) { + pr_err("apple-bce: Creating segment list failed\n"); + dma_unmap_sg(dev, buf->scatterlist.sgl, buf->scatterlist.nents, dir); + return -EIO; + } + return 0; +} + +int bce_map_dma_buffer_vm(struct device *dev, struct bce_dma_buffer *buf, void *data, size_t len, + enum dma_data_direction dir) +{ + int status; + struct sg_table scatterlist; + if ((status = bce_alloc_scatterlist_from_vm(&scatterlist, data, len))) + return status; + if ((status = bce_map_dma_buffer(dev, buf, scatterlist, dir))) { + sg_free_table(&scatterlist); + return status; + } + return 0; +} + +int bce_map_dma_buffer_km(struct device *dev, struct bce_dma_buffer *buf, void *data, size_t len, + enum dma_data_direction dir) +{ + /* Kernel memory is continuous which is great for us. */ + int status; + struct sg_table scatterlist; + if ((status = sg_alloc_table(&scatterlist, 1, GFP_KERNEL))) { + sg_free_table(&scatterlist); + return status; + } + sg_set_buf(scatterlist.sgl, data, (uint) len); + if ((status = bce_map_dma_buffer(dev, buf, scatterlist, dir))) { + sg_free_table(&scatterlist); + return status; + } + return 0; +} + +void bce_unmap_dma_buffer(struct device *dev, struct bce_dma_buffer *buf) +{ + dma_unmap_sg(dev, buf->scatterlist.sgl, buf->scatterlist.nents, buf->direction); + bce_unmap_segement_list(dev, buf->seglist_hostinfo); +} + + +static int bce_alloc_scatterlist_from_vm(struct sg_table *tbl, void *data, size_t len) +{ + int status, i; + struct page **pages; + size_t off, start_page, end_page, page_count; + off = (size_t) data % PAGE_SIZE; + start_page = (size_t) data / PAGE_SIZE; + end_page = ((size_t) data + len - 1) / PAGE_SIZE; + page_count = end_page - start_page + 1; + + if (page_count > PAGE_SIZE / sizeof(struct page *)) + pages = vmalloc(page_count * sizeof(struct page *)); + else + pages = kmalloc(page_count * sizeof(struct page *), GFP_KERNEL); + + for (i = 0; i < page_count; i++) + pages[i] = vmalloc_to_page((void *) ((start_page + i) * PAGE_SIZE)); + + if ((status = sg_alloc_table_from_pages(tbl, pages, page_count, (unsigned int) off, len, GFP_KERNEL))) { + sg_free_table(tbl); + } + + if (page_count > PAGE_SIZE / sizeof(struct page *)) + vfree(pages); + else + kfree(pages); + return status; +} + +#define BCE_ELEMENTS_PER_PAGE ((PAGE_SIZE - sizeof(struct bce_segment_list_header)) \ + / sizeof(struct bce_segment_list_element)) +#define BCE_ELEMENTS_PER_ADDITIONAL_PAGE (PAGE_SIZE / sizeof(struct bce_segment_list_element)) + +static struct bce_segment_list_element_hostinfo *bce_map_segment_list( + struct device *dev, struct scatterlist *pages, int pagen) +{ + size_t ptr, pptr = 0; + struct bce_segment_list_header theader; /* a temp header, to store the initial seg */ + struct bce_segment_list_header *header; + struct bce_segment_list_element *el, *el_end; + struct bce_segment_list_element_hostinfo *out, *pout, *out_root; + struct scatterlist *sg; + int i; + header = &theader; + out = out_root = NULL; + el = el_end = NULL; + for_each_sg(pages, sg, pagen, i) { + if (el >= el_end) { + /* allocate a new page, this will be also done for the first element */ + ptr = __get_free_page(GFP_KERNEL); + if (pptr && ptr == pptr + PAGE_SIZE) { + out->page_count++; + header->element_count += BCE_ELEMENTS_PER_ADDITIONAL_PAGE; + el_end += BCE_ELEMENTS_PER_ADDITIONAL_PAGE; + } else { + header = (void *) ptr; + header->element_count = BCE_ELEMENTS_PER_PAGE; + header->data_size = 0; + header->next_segl_addr = 0; + header->next_segl_length = 0; + el = (void *) (header + 1); + el_end = el + BCE_ELEMENTS_PER_PAGE; + + if (out) { + out->next = kmalloc(sizeof(struct bce_segment_list_element_hostinfo), GFP_KERNEL); + out = out->next; + } else { + out_root = out = kmalloc(sizeof(struct bce_segment_list_element_hostinfo), GFP_KERNEL); + } + out->page_start = (void *) ptr; + out->page_count = 1; + out->dma_start = DMA_MAPPING_ERROR; + out->next = NULL; + } + pptr = ptr; + } + el->addr = sg->dma_address; + el->length = sg->length; + header->data_size += el->length; + } + + /* DMA map */ + out = out_root; + pout = NULL; + while (out) { + out->dma_start = dma_map_single(dev, out->page_start, out->page_count * PAGE_SIZE, DMA_TO_DEVICE); + if (dma_mapping_error(dev, out->dma_start)) + goto error; + if (pout) { + header = pout->page_start; + header->next_segl_addr = out->dma_start; + header->next_segl_length = out->page_count * PAGE_SIZE; + } + pout = out; + out = out->next; + } + return out_root; + + error: + bce_unmap_segement_list(dev, out_root); + return NULL; +} + +static void bce_unmap_segement_list(struct device *dev, struct bce_segment_list_element_hostinfo *list) +{ + struct bce_segment_list_element_hostinfo *next; + while (list) { + if (list->dma_start != DMA_MAPPING_ERROR) + dma_unmap_single(dev, list->dma_start, list->page_count * PAGE_SIZE, DMA_TO_DEVICE); + next = list->next; + kfree(list); + list = next; + } +} + +int bce_set_submission_buf(struct bce_qe_submission *element, struct bce_dma_buffer *buf, size_t offset, size_t length) +{ + struct bce_segment_list_element_hostinfo *seg; + struct bce_segment_list_header *seg_header; + + seg = buf->seglist_hostinfo; + if (!seg) { + element->addr = buf->scatterlist.sgl->dma_address + offset; + element->length = length; + element->segl_addr = 0; + element->segl_length = 0; + return 0; + } + + while (seg) { + seg_header = seg->page_start; + if (offset <= seg_header->data_size) + break; + offset -= seg_header->data_size; + seg = seg->next; + } + if (!seg) + return -EINVAL; + element->addr = offset; + element->length = buf->scatterlist.sgl->dma_length; + element->segl_addr = seg->dma_start; + element->segl_length = seg->page_count * PAGE_SIZE; + return 0; +} \ No newline at end of file diff --git a/drivers/staging/apple-bce/queue_dma.h b/drivers/staging/apple-bce/queue_dma.h new file mode 100644 index 000000000000..f8a57e50e7a3 --- /dev/null +++ b/drivers/staging/apple-bce/queue_dma.h @@ -0,0 +1,50 @@ +#ifndef BCE_QUEUE_DMA_H +#define BCE_QUEUE_DMA_H + +#include + +struct bce_qe_submission; + +struct bce_segment_list_header { + u64 element_count; + u64 data_size; + + u64 next_segl_addr; + u64 next_segl_length; +}; +struct bce_segment_list_element { + u64 addr; + u64 length; +}; + +struct bce_segment_list_element_hostinfo { + struct bce_segment_list_element_hostinfo *next; + void *page_start; + size_t page_count; + dma_addr_t dma_start; +}; + + +struct bce_dma_buffer { + enum dma_data_direction direction; + struct sg_table scatterlist; + struct bce_segment_list_element_hostinfo *seglist_hostinfo; +}; + +/* NOTE: Takes ownership of the sg_table if it succeeds. Ownership is not transferred on failure. */ +int bce_map_dma_buffer(struct device *dev, struct bce_dma_buffer *buf, struct sg_table scatterlist, + enum dma_data_direction dir); + +/* Creates a buffer from virtual memory (vmalloc) */ +int bce_map_dma_buffer_vm(struct device *dev, struct bce_dma_buffer *buf, void *data, size_t len, + enum dma_data_direction dir); + +/* Creates a buffer from kernel memory (kmalloc) */ +int bce_map_dma_buffer_km(struct device *dev, struct bce_dma_buffer *buf, void *data, size_t len, + enum dma_data_direction dir); + +void bce_unmap_dma_buffer(struct device *dev, struct bce_dma_buffer *buf); + +int bce_set_submission_buf(struct bce_qe_submission *element, struct bce_dma_buffer *buf, size_t offset, size_t length); + +#endif //BCE_QUEUE_DMA_H diff --git a/drivers/staging/apple-bce/vhci/command.h b/drivers/staging/apple-bce/vhci/command.h new file mode 100644 index 000000000000..26619e0bccfa --- /dev/null +++ b/drivers/staging/apple-bce/vhci/command.h @@ -0,0 +1,204 @@ +#ifndef BCE_VHCI_COMMAND_H +#define BCE_VHCI_COMMAND_H + +#include "queue.h" +#include +#include + +#define BCE_VHCI_CMD_TIMEOUT_SHORT msecs_to_jiffies(2000) +#define BCE_VHCI_CMD_TIMEOUT_LONG msecs_to_jiffies(30000) + +#define BCE_VHCI_BULK_MAX_ACTIVE_URBS_POW2 2 +#define BCE_VHCI_BULK_MAX_ACTIVE_URBS (1 << BCE_VHCI_BULK_MAX_ACTIVE_URBS_POW2) + +typedef u8 bce_vhci_port_t; +typedef u8 bce_vhci_device_t; + +enum bce_vhci_command { + BCE_VHCI_CMD_CONTROLLER_ENABLE = 1, + BCE_VHCI_CMD_CONTROLLER_DISABLE = 2, + BCE_VHCI_CMD_CONTROLLER_START = 3, + BCE_VHCI_CMD_CONTROLLER_PAUSE = 4, + + BCE_VHCI_CMD_PORT_POWER_ON = 0x10, + BCE_VHCI_CMD_PORT_POWER_OFF = 0x11, + BCE_VHCI_CMD_PORT_RESUME = 0x12, + BCE_VHCI_CMD_PORT_SUSPEND = 0x13, + BCE_VHCI_CMD_PORT_RESET = 0x14, + BCE_VHCI_CMD_PORT_DISABLE = 0x15, + BCE_VHCI_CMD_PORT_STATUS = 0x16, + + BCE_VHCI_CMD_DEVICE_CREATE = 0x30, + BCE_VHCI_CMD_DEVICE_DESTROY = 0x31, + + BCE_VHCI_CMD_ENDPOINT_CREATE = 0x40, + BCE_VHCI_CMD_ENDPOINT_DESTROY = 0x41, + BCE_VHCI_CMD_ENDPOINT_SET_STATE = 0x42, + BCE_VHCI_CMD_ENDPOINT_RESET = 0x44, + + /* Device to host only */ + BCE_VHCI_CMD_ENDPOINT_REQUEST_STATE = 0x43, + BCE_VHCI_CMD_TRANSFER_REQUEST = 0x1000, + BCE_VHCI_CMD_CONTROL_TRANSFER_STATUS = 0x1005 +}; + +enum bce_vhci_endpoint_state { + BCE_VHCI_ENDPOINT_ACTIVE = 0, + BCE_VHCI_ENDPOINT_PAUSED = 1, + BCE_VHCI_ENDPOINT_STALLED = 2 +}; + +static inline int bce_vhci_cmd_controller_enable(struct bce_vhci_command_queue *q, u8 busNum, u16 *portMask) +{ + int status; + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_CONTROLLER_ENABLE; + cmd.param1 = 0x7100u | busNum; + status = bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_LONG); + if (!status) + *portMask = (u16) res.param2; + return status; +} +static inline int bce_vhci_cmd_controller_disable(struct bce_vhci_command_queue *q) +{ + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_CONTROLLER_DISABLE; + return bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_LONG); +} +static inline int bce_vhci_cmd_controller_start(struct bce_vhci_command_queue *q) +{ + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_CONTROLLER_START; + return bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_LONG); +} +static inline int bce_vhci_cmd_controller_pause(struct bce_vhci_command_queue *q) +{ + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_CONTROLLER_PAUSE; + return bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_LONG); +} + +static inline int bce_vhci_cmd_port_power_on(struct bce_vhci_command_queue *q, bce_vhci_port_t port) +{ + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_PORT_POWER_ON; + cmd.param1 = port; + return bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_SHORT); +} +static inline int bce_vhci_cmd_port_power_off(struct bce_vhci_command_queue *q, bce_vhci_port_t port) +{ + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_PORT_POWER_OFF; + cmd.param1 = port; + return bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_SHORT); +} +static inline int bce_vhci_cmd_port_resume(struct bce_vhci_command_queue *q, bce_vhci_port_t port) +{ + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_PORT_RESUME; + cmd.param1 = port; + return bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_LONG); +} +static inline int bce_vhci_cmd_port_suspend(struct bce_vhci_command_queue *q, bce_vhci_port_t port) +{ + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_PORT_SUSPEND; + cmd.param1 = port; + return bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_LONG); +} +static inline int bce_vhci_cmd_port_reset(struct bce_vhci_command_queue *q, bce_vhci_port_t port, u32 timeout) +{ + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_PORT_RESET; + cmd.param1 = port; + cmd.param2 = timeout; + return bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_SHORT); +} +static inline int bce_vhci_cmd_port_disable(struct bce_vhci_command_queue *q, bce_vhci_port_t port) +{ + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_PORT_DISABLE; + cmd.param1 = port; + return bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_SHORT); +} +static inline int bce_vhci_cmd_port_status(struct bce_vhci_command_queue *q, bce_vhci_port_t port, + u32 clearFlags, u32 *resStatus) +{ + int status; + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_PORT_STATUS; + cmd.param1 = port; + cmd.param2 = clearFlags & 0x560000; + status = bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_SHORT); + if (status >= 0) + *resStatus = (u32) res.param2; + return status; +} + +static inline int bce_vhci_cmd_device_create(struct bce_vhci_command_queue *q, bce_vhci_port_t port, + bce_vhci_device_t *dev) +{ + int status; + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_DEVICE_CREATE; + cmd.param1 = port; + status = bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_SHORT); + if (!status) + *dev = (bce_vhci_device_t) res.param2; + return status; +} +static inline int bce_vhci_cmd_device_destroy(struct bce_vhci_command_queue *q, bce_vhci_device_t dev) +{ + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_DEVICE_DESTROY; + cmd.param1 = dev; + return bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_LONG); +} + +static inline int bce_vhci_cmd_endpoint_create(struct bce_vhci_command_queue *q, bce_vhci_device_t dev, + struct usb_endpoint_descriptor *desc) +{ + struct bce_vhci_message cmd, res; + int endpoint_type = usb_endpoint_type(desc); + int maxp = usb_endpoint_maxp(desc); + int maxp_burst = usb_endpoint_maxp_mult(desc) * maxp; + u8 max_active_requests_pow2 = 0; + cmd.cmd = BCE_VHCI_CMD_ENDPOINT_CREATE; + cmd.param1 = dev | ((desc->bEndpointAddress & 0x8Fu) << 8); + if (endpoint_type == USB_ENDPOINT_XFER_BULK) + max_active_requests_pow2 = BCE_VHCI_BULK_MAX_ACTIVE_URBS_POW2; + cmd.param2 = endpoint_type | ((max_active_requests_pow2 & 0xf) << 4) | (maxp << 16) | ((u64) maxp_burst << 32); + if (endpoint_type == USB_ENDPOINT_XFER_INT) + cmd.param2 |= (desc->bInterval - 1) << 8; + return bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_SHORT); +} +static inline int bce_vhci_cmd_endpoint_destroy(struct bce_vhci_command_queue *q, bce_vhci_device_t dev, u8 endpoint) +{ + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_ENDPOINT_DESTROY; + cmd.param1 = dev | (endpoint << 8); + return bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_SHORT); +} +static inline int bce_vhci_cmd_endpoint_set_state(struct bce_vhci_command_queue *q, bce_vhci_device_t dev, u8 endpoint, + enum bce_vhci_endpoint_state newState, enum bce_vhci_endpoint_state *retState) +{ + int status; + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_ENDPOINT_SET_STATE; + cmd.param1 = dev | (endpoint << 8); + cmd.param2 = (u64) newState; + status = bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_SHORT); + if (status != BCE_VHCI_INTERNAL_ERROR && status != BCE_VHCI_NO_POWER) + *retState = (enum bce_vhci_endpoint_state) res.param2; + return status; +} +static inline int bce_vhci_cmd_endpoint_reset(struct bce_vhci_command_queue *q, bce_vhci_device_t dev, u8 endpoint) +{ + struct bce_vhci_message cmd, res; + cmd.cmd = BCE_VHCI_CMD_ENDPOINT_RESET; + cmd.param1 = dev | (endpoint << 8); + return bce_vhci_command_queue_execute(q, &cmd, &res, BCE_VHCI_CMD_TIMEOUT_SHORT); +} + + +#endif //BCE_VHCI_COMMAND_H diff --git a/drivers/staging/apple-bce/vhci/queue.c b/drivers/staging/apple-bce/vhci/queue.c new file mode 100644 index 000000000000..7b0b5027157b --- /dev/null +++ b/drivers/staging/apple-bce/vhci/queue.c @@ -0,0 +1,268 @@ +#include "queue.h" +#include "vhci.h" +#include "../apple_bce.h" + + +static void bce_vhci_message_queue_completion(struct bce_queue_sq *sq); + +int bce_vhci_message_queue_create(struct bce_vhci *vhci, struct bce_vhci_message_queue *ret, const char *name) +{ + int status; + ret->cq = bce_create_cq(vhci->dev, VHCI_EVENT_QUEUE_EL_COUNT); + if (!ret->cq) + return -EINVAL; + ret->sq = bce_create_sq(vhci->dev, ret->cq, name, VHCI_EVENT_QUEUE_EL_COUNT, DMA_TO_DEVICE, + bce_vhci_message_queue_completion, ret); + if (!ret->sq) { + status = -EINVAL; + goto fail_cq; + } + ret->data = dma_alloc_coherent(&vhci->dev->pci->dev, sizeof(struct bce_vhci_message) * VHCI_EVENT_QUEUE_EL_COUNT, + &ret->dma_addr, GFP_KERNEL); + if (!ret->data) { + status = -EINVAL; + goto fail_sq; + } + return 0; + +fail_sq: + bce_destroy_sq(vhci->dev, ret->sq); + ret->sq = NULL; +fail_cq: + bce_destroy_cq(vhci->dev, ret->cq); + ret->cq = NULL; + return status; +} + +void bce_vhci_message_queue_destroy(struct bce_vhci *vhci, struct bce_vhci_message_queue *q) +{ + if (!q->cq) + return; + dma_free_coherent(&vhci->dev->pci->dev, sizeof(struct bce_vhci_message) * VHCI_EVENT_QUEUE_EL_COUNT, + q->data, q->dma_addr); + bce_destroy_sq(vhci->dev, q->sq); + bce_destroy_cq(vhci->dev, q->cq); +} + +void bce_vhci_message_queue_write(struct bce_vhci_message_queue *q, struct bce_vhci_message *req) +{ + int sidx; + struct bce_qe_submission *s; + sidx = q->sq->tail; + s = bce_next_submission(q->sq); + pr_debug("bce-vhci: Send message: %x s=%x p1=%x p2=%llx\n", req->cmd, req->status, req->param1, req->param2); + q->data[sidx] = *req; + bce_set_submission_single(s, q->dma_addr + sizeof(struct bce_vhci_message) * sidx, + sizeof(struct bce_vhci_message)); + bce_submit_to_device(q->sq); +} + +static void bce_vhci_message_queue_completion(struct bce_queue_sq *sq) +{ + while (bce_next_completion(sq)) + bce_notify_submission_complete(sq); +} + + + +static void bce_vhci_event_queue_completion(struct bce_queue_sq *sq); + +int __bce_vhci_event_queue_create(struct bce_vhci *vhci, struct bce_vhci_event_queue *ret, const char *name, + bce_sq_completion compl) +{ + ret->vhci = vhci; + + ret->sq = bce_create_sq(vhci->dev, vhci->ev_cq, name, VHCI_EVENT_QUEUE_EL_COUNT, DMA_FROM_DEVICE, compl, ret); + if (!ret->sq) + return -EINVAL; + ret->data = dma_alloc_coherent(&vhci->dev->pci->dev, sizeof(struct bce_vhci_message) * VHCI_EVENT_QUEUE_EL_COUNT, + &ret->dma_addr, GFP_KERNEL); + if (!ret->data) { + bce_destroy_sq(vhci->dev, ret->sq); + ret->sq = NULL; + return -EINVAL; + } + + init_completion(&ret->queue_empty_completion); + bce_vhci_event_queue_submit_pending(ret, VHCI_EVENT_PENDING_COUNT); + return 0; +} + +int bce_vhci_event_queue_create(struct bce_vhci *vhci, struct bce_vhci_event_queue *ret, const char *name, + bce_vhci_event_queue_callback cb) +{ + ret->cb = cb; + return __bce_vhci_event_queue_create(vhci, ret, name, bce_vhci_event_queue_completion); +} + +void bce_vhci_event_queue_destroy(struct bce_vhci *vhci, struct bce_vhci_event_queue *q) +{ + if (!q->sq) + return; + dma_free_coherent(&vhci->dev->pci->dev, sizeof(struct bce_vhci_message) * VHCI_EVENT_QUEUE_EL_COUNT, + q->data, q->dma_addr); + bce_destroy_sq(vhci->dev, q->sq); +} + +static void bce_vhci_event_queue_completion(struct bce_queue_sq *sq) +{ + struct bce_sq_completion_data *cd; + struct bce_vhci_event_queue *ev = sq->userdata; + struct bce_vhci_message *msg; + size_t cnt = 0; + + while ((cd = bce_next_completion(sq))) { + if (cd->status == BCE_COMPLETION_ABORTED) { /* We flushed the queue */ + bce_notify_submission_complete(sq); + continue; + } + msg = &ev->data[sq->head]; + pr_debug("bce-vhci: Got event: %x s=%x p1=%x p2=%llx\n", msg->cmd, msg->status, msg->param1, msg->param2); + ev->cb(ev, msg); + + bce_notify_submission_complete(sq); + ++cnt; + } + bce_vhci_event_queue_submit_pending(ev, cnt); + if (atomic_read(&sq->available_commands) == sq->el_count - 1) + complete(&ev->queue_empty_completion); +} + +void bce_vhci_event_queue_submit_pending(struct bce_vhci_event_queue *q, size_t count) +{ + int idx; + struct bce_qe_submission *s; + while (count--) { + if (bce_reserve_submission(q->sq, NULL)) { + pr_err("bce-vhci: Failed to reserve an event queue submission\n"); + break; + } + idx = q->sq->tail; + s = bce_next_submission(q->sq); + bce_set_submission_single(s, + q->dma_addr + idx * sizeof(struct bce_vhci_message), sizeof(struct bce_vhci_message)); + } + bce_submit_to_device(q->sq); +} + +void bce_vhci_event_queue_pause(struct bce_vhci_event_queue *q) +{ + unsigned long timeout; + reinit_completion(&q->queue_empty_completion); + if (bce_cmd_flush_memory_queue(q->vhci->dev->cmd_cmdq, q->sq->qid)) + pr_warn("bce-vhci: failed to flush event queue\n"); + timeout = msecs_to_jiffies(5000); + while (atomic_read(&q->sq->available_commands) != q->sq->el_count - 1) { + timeout = wait_for_completion_timeout(&q->queue_empty_completion, timeout); + if (timeout == 0) { + pr_err("bce-vhci: waiting for queue to be flushed timed out\n"); + break; + } + } +} + +void bce_vhci_event_queue_resume(struct bce_vhci_event_queue *q) +{ + if (atomic_read(&q->sq->available_commands) != q->sq->el_count - 1) { + pr_err("bce-vhci: resume of a queue with pending submissions\n"); + return; + } + bce_vhci_event_queue_submit_pending(q, VHCI_EVENT_PENDING_COUNT); +} + +void bce_vhci_command_queue_create(struct bce_vhci_command_queue *ret, struct bce_vhci_message_queue *mq) +{ + ret->mq = mq; + ret->completion.result = NULL; + init_completion(&ret->completion.completion); + spin_lock_init(&ret->completion_lock); + mutex_init(&ret->mutex); +} + +void bce_vhci_command_queue_destroy(struct bce_vhci_command_queue *cq) +{ + spin_lock(&cq->completion_lock); + if (cq->completion.result) { + memset(cq->completion.result, 0, sizeof(struct bce_vhci_message)); + cq->completion.result->status = BCE_VHCI_ABORT; + complete(&cq->completion.completion); + cq->completion.result = NULL; + } + spin_unlock(&cq->completion_lock); + mutex_lock(&cq->mutex); + mutex_unlock(&cq->mutex); + mutex_destroy(&cq->mutex); +} + +void bce_vhci_command_queue_deliver_completion(struct bce_vhci_command_queue *cq, struct bce_vhci_message *msg) +{ + struct bce_vhci_command_queue_completion *c = &cq->completion; + + spin_lock(&cq->completion_lock); + if (c->result) { + *c->result = *msg; + complete(&c->completion); + c->result = NULL; + } + spin_unlock(&cq->completion_lock); +} + +static int __bce_vhci_command_queue_execute(struct bce_vhci_command_queue *cq, struct bce_vhci_message *req, + struct bce_vhci_message *res, unsigned long timeout) +{ + int status; + struct bce_vhci_command_queue_completion *c; + struct bce_vhci_message creq; + c = &cq->completion; + + if ((status = bce_reserve_submission(cq->mq->sq, &timeout))) + return status; + + spin_lock(&cq->completion_lock); + c->result = res; + reinit_completion(&c->completion); + spin_unlock(&cq->completion_lock); + + bce_vhci_message_queue_write(cq->mq, req); + + if (!wait_for_completion_timeout(&c->completion, timeout)) { + /* we ran out of time, send cancellation */ + pr_debug("bce-vhci: command timed out req=%x\n", req->cmd); + if ((status = bce_reserve_submission(cq->mq->sq, &timeout))) + return status; + + creq = *req; + creq.cmd |= 0x4000; + bce_vhci_message_queue_write(cq->mq, &creq); + + if (!wait_for_completion_timeout(&c->completion, 1000)) { + pr_err("bce-vhci: Possible desync, cmd cancel timed out\n"); + + spin_lock(&cq->completion_lock); + c->result = NULL; + spin_unlock(&cq->completion_lock); + return -ETIMEDOUT; + } + if ((res->cmd & ~0x8000) == creq.cmd) + return -ETIMEDOUT; + /* reply for the previous command most likely arrived */ + } + + if ((res->cmd & ~0x8000) != req->cmd) { + pr_err("bce-vhci: Possible desync, cmd reply mismatch req=%x, res=%x\n", req->cmd, res->cmd); + return -EIO; + } + if (res->status == BCE_VHCI_SUCCESS) + return 0; + return res->status; +} + +int bce_vhci_command_queue_execute(struct bce_vhci_command_queue *cq, struct bce_vhci_message *req, + struct bce_vhci_message *res, unsigned long timeout) +{ + int status; + mutex_lock(&cq->mutex); + status = __bce_vhci_command_queue_execute(cq, req, res, timeout); + mutex_unlock(&cq->mutex); + return status; +} diff --git a/drivers/staging/apple-bce/vhci/queue.h b/drivers/staging/apple-bce/vhci/queue.h new file mode 100644 index 000000000000..adb705b6ba1d --- /dev/null +++ b/drivers/staging/apple-bce/vhci/queue.h @@ -0,0 +1,76 @@ +#ifndef BCE_VHCI_QUEUE_H +#define BCE_VHCI_QUEUE_H + +#include +#include "../queue.h" + +#define VHCI_EVENT_QUEUE_EL_COUNT 256 +#define VHCI_EVENT_PENDING_COUNT 32 + +struct bce_vhci; +struct bce_vhci_event_queue; + +enum bce_vhci_message_status { + BCE_VHCI_SUCCESS = 1, + BCE_VHCI_ERROR = 2, + BCE_VHCI_USB_PIPE_STALL = 3, + BCE_VHCI_ABORT = 4, + BCE_VHCI_BAD_ARGUMENT = 5, + BCE_VHCI_OVERRUN = 6, + BCE_VHCI_INTERNAL_ERROR = 7, + BCE_VHCI_NO_POWER = 8, + BCE_VHCI_UNSUPPORTED = 9 +}; +struct bce_vhci_message { + u16 cmd; + u16 status; // bce_vhci_message_status + u32 param1; + u64 param2; +}; + +struct bce_vhci_message_queue { + struct bce_queue_cq *cq; + struct bce_queue_sq *sq; + struct bce_vhci_message *data; + dma_addr_t dma_addr; +}; +typedef void (*bce_vhci_event_queue_callback)(struct bce_vhci_event_queue *q, struct bce_vhci_message *msg); +struct bce_vhci_event_queue { + struct bce_vhci *vhci; + struct bce_queue_sq *sq; + struct bce_vhci_message *data; + dma_addr_t dma_addr; + bce_vhci_event_queue_callback cb; + struct completion queue_empty_completion; +}; +struct bce_vhci_command_queue_completion { + struct bce_vhci_message *result; + struct completion completion; +}; +struct bce_vhci_command_queue { + struct bce_vhci_message_queue *mq; + struct bce_vhci_command_queue_completion completion; + struct spinlock completion_lock; + struct mutex mutex; +}; + +int bce_vhci_message_queue_create(struct bce_vhci *vhci, struct bce_vhci_message_queue *ret, const char *name); +void bce_vhci_message_queue_destroy(struct bce_vhci *vhci, struct bce_vhci_message_queue *q); +void bce_vhci_message_queue_write(struct bce_vhci_message_queue *q, struct bce_vhci_message *req); + +int __bce_vhci_event_queue_create(struct bce_vhci *vhci, struct bce_vhci_event_queue *ret, const char *name, + bce_sq_completion compl); +int bce_vhci_event_queue_create(struct bce_vhci *vhci, struct bce_vhci_event_queue *ret, const char *name, + bce_vhci_event_queue_callback cb); +void bce_vhci_event_queue_destroy(struct bce_vhci *vhci, struct bce_vhci_event_queue *q); +void bce_vhci_event_queue_submit_pending(struct bce_vhci_event_queue *q, size_t count); +void bce_vhci_event_queue_pause(struct bce_vhci_event_queue *q); +void bce_vhci_event_queue_resume(struct bce_vhci_event_queue *q); + +void bce_vhci_command_queue_create(struct bce_vhci_command_queue *ret, struct bce_vhci_message_queue *mq); +void bce_vhci_command_queue_destroy(struct bce_vhci_command_queue *cq); +int bce_vhci_command_queue_execute(struct bce_vhci_command_queue *cq, struct bce_vhci_message *req, + struct bce_vhci_message *res, unsigned long timeout); +void bce_vhci_command_queue_deliver_completion(struct bce_vhci_command_queue *cq, struct bce_vhci_message *msg); + +#endif //BCE_VHCI_QUEUE_H diff --git a/drivers/staging/apple-bce/vhci/transfer.c b/drivers/staging/apple-bce/vhci/transfer.c new file mode 100644 index 000000000000..8226363d69c8 --- /dev/null +++ b/drivers/staging/apple-bce/vhci/transfer.c @@ -0,0 +1,661 @@ +#include "transfer.h" +#include "../queue.h" +#include "vhci.h" +#include "../apple_bce.h" +#include + +static void bce_vhci_transfer_queue_completion(struct bce_queue_sq *sq); +static void bce_vhci_transfer_queue_giveback(struct bce_vhci_transfer_queue *q); +static void bce_vhci_transfer_queue_remove_pending(struct bce_vhci_transfer_queue *q); + +static int bce_vhci_urb_init(struct bce_vhci_urb *vurb); +static int bce_vhci_urb_update(struct bce_vhci_urb *urb, struct bce_vhci_message *msg); +static int bce_vhci_urb_transfer_completion(struct bce_vhci_urb *urb, struct bce_sq_completion_data *c); + +static void bce_vhci_transfer_queue_reset_w(struct work_struct *work); + +void bce_vhci_create_transfer_queue(struct bce_vhci *vhci, struct bce_vhci_transfer_queue *q, + struct usb_host_endpoint *endp, bce_vhci_device_t dev_addr, enum dma_data_direction dir) +{ + char name[0x21]; + INIT_LIST_HEAD(&q->evq); + INIT_LIST_HEAD(&q->giveback_urb_list); + spin_lock_init(&q->urb_lock); + mutex_init(&q->pause_lock); + q->vhci = vhci; + q->endp = endp; + q->dev_addr = dev_addr; + q->endp_addr = (u8) (endp->desc.bEndpointAddress & 0x8F); + q->state = BCE_VHCI_ENDPOINT_ACTIVE; + q->active = true; + q->stalled = false; + q->max_active_requests = 1; + if (usb_endpoint_type(&endp->desc) == USB_ENDPOINT_XFER_BULK) + q->max_active_requests = BCE_VHCI_BULK_MAX_ACTIVE_URBS; + q->remaining_active_requests = q->max_active_requests; + q->cq = bce_create_cq(vhci->dev, 0x100); + INIT_WORK(&q->w_reset, bce_vhci_transfer_queue_reset_w); + q->sq_in = NULL; + if (dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL) { + snprintf(name, sizeof(name), "VHC1-%i-%02x", dev_addr, 0x80 | usb_endpoint_num(&endp->desc)); + q->sq_in = bce_create_sq(vhci->dev, q->cq, name, 0x100, DMA_FROM_DEVICE, + bce_vhci_transfer_queue_completion, q); + } + q->sq_out = NULL; + if (dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL) { + snprintf(name, sizeof(name), "VHC1-%i-%02x", dev_addr, usb_endpoint_num(&endp->desc)); + q->sq_out = bce_create_sq(vhci->dev, q->cq, name, 0x100, DMA_TO_DEVICE, + bce_vhci_transfer_queue_completion, q); + } +} + +void bce_vhci_destroy_transfer_queue(struct bce_vhci *vhci, struct bce_vhci_transfer_queue *q) +{ + bce_vhci_transfer_queue_giveback(q); + bce_vhci_transfer_queue_remove_pending(q); + if (q->sq_in) + bce_destroy_sq(vhci->dev, q->sq_in); + if (q->sq_out) + bce_destroy_sq(vhci->dev, q->sq_out); + bce_destroy_cq(vhci->dev, q->cq); +} + +static inline bool bce_vhci_transfer_queue_can_init_urb(struct bce_vhci_transfer_queue *q) +{ + return q->remaining_active_requests > 0; +} + +static void bce_vhci_transfer_queue_defer_event(struct bce_vhci_transfer_queue *q, struct bce_vhci_message *msg) +{ + struct bce_vhci_list_message *lm; + lm = kmalloc(sizeof(struct bce_vhci_list_message), GFP_KERNEL); + INIT_LIST_HEAD(&lm->list); + lm->msg = *msg; + list_add_tail(&lm->list, &q->evq); +} + +static void bce_vhci_transfer_queue_giveback(struct bce_vhci_transfer_queue *q) +{ + unsigned long flags; + struct urb *urb; + spin_lock_irqsave(&q->urb_lock, flags); + while (!list_empty(&q->giveback_urb_list)) { + urb = list_first_entry(&q->giveback_urb_list, struct urb, urb_list); + list_del(&urb->urb_list); + + spin_unlock_irqrestore(&q->urb_lock, flags); + usb_hcd_giveback_urb(q->vhci->hcd, urb, urb->status); + spin_lock_irqsave(&q->urb_lock, flags); + } + spin_unlock_irqrestore(&q->urb_lock, flags); +} + +static void bce_vhci_transfer_queue_init_pending_urbs(struct bce_vhci_transfer_queue *q); + +static void bce_vhci_transfer_queue_deliver_pending(struct bce_vhci_transfer_queue *q) +{ + struct urb *urb; + struct bce_vhci_list_message *lm; + + while (!list_empty(&q->endp->urb_list) && !list_empty(&q->evq)) { + urb = list_first_entry(&q->endp->urb_list, struct urb, urb_list); + + lm = list_first_entry(&q->evq, struct bce_vhci_list_message, list); + if (bce_vhci_urb_update(urb->hcpriv, &lm->msg) == -EAGAIN) + break; + list_del(&lm->list); + kfree(lm); + } + + /* some of the URBs could have been completed, so initialize more URBs if possible */ + bce_vhci_transfer_queue_init_pending_urbs(q); +} + +static void bce_vhci_transfer_queue_remove_pending(struct bce_vhci_transfer_queue *q) +{ + unsigned long flags; + struct bce_vhci_list_message *lm; + spin_lock_irqsave(&q->urb_lock, flags); + while (!list_empty(&q->evq)) { + lm = list_first_entry(&q->evq, struct bce_vhci_list_message, list); + list_del(&lm->list); + kfree(lm); + } + spin_unlock_irqrestore(&q->urb_lock, flags); +} + +void bce_vhci_transfer_queue_event(struct bce_vhci_transfer_queue *q, struct bce_vhci_message *msg) +{ + unsigned long flags; + struct bce_vhci_urb *turb; + struct urb *urb; + spin_lock_irqsave(&q->urb_lock, flags); + bce_vhci_transfer_queue_deliver_pending(q); + + if (msg->cmd == BCE_VHCI_CMD_TRANSFER_REQUEST && + (!list_empty(&q->evq) || list_empty(&q->endp->urb_list))) { + bce_vhci_transfer_queue_defer_event(q, msg); + goto complete; + } + if (list_empty(&q->endp->urb_list)) { + pr_err("bce-vhci: [%02x] Unexpected transfer queue event\n", q->endp_addr); + goto complete; + } + urb = list_first_entry(&q->endp->urb_list, struct urb, urb_list); + turb = urb->hcpriv; + if (bce_vhci_urb_update(turb, msg) == -EAGAIN) { + bce_vhci_transfer_queue_defer_event(q, msg); + } else { + bce_vhci_transfer_queue_init_pending_urbs(q); + } + +complete: + spin_unlock_irqrestore(&q->urb_lock, flags); + bce_vhci_transfer_queue_giveback(q); +} + +static void bce_vhci_transfer_queue_completion(struct bce_queue_sq *sq) +{ + unsigned long flags; + struct bce_sq_completion_data *c; + struct urb *urb; + struct bce_vhci_transfer_queue *q = sq->userdata; + spin_lock_irqsave(&q->urb_lock, flags); + while ((c = bce_next_completion(sq))) { + if (c->status == BCE_COMPLETION_ABORTED) { /* We flushed the queue */ + pr_debug("bce-vhci: [%02x] Got an abort completion\n", q->endp_addr); + bce_notify_submission_complete(sq); + continue; + } + if (list_empty(&q->endp->urb_list)) { + pr_err("bce-vhci: [%02x] Got a completion while no requests are pending\n", q->endp_addr); + continue; + } + pr_debug("bce-vhci: [%02x] Got a transfer queue completion\n", q->endp_addr); + urb = list_first_entry(&q->endp->urb_list, struct urb, urb_list); + bce_vhci_urb_transfer_completion(urb->hcpriv, c); + bce_notify_submission_complete(sq); + } + bce_vhci_transfer_queue_deliver_pending(q); + spin_unlock_irqrestore(&q->urb_lock, flags); + bce_vhci_transfer_queue_giveback(q); +} + +int bce_vhci_transfer_queue_do_pause(struct bce_vhci_transfer_queue *q) +{ + unsigned long flags; + int status; + u8 endp_addr = (u8) (q->endp->desc.bEndpointAddress & 0x8F); + spin_lock_irqsave(&q->urb_lock, flags); + q->active = false; + spin_unlock_irqrestore(&q->urb_lock, flags); + if (q->sq_out) { + pr_err("bce-vhci: Not implemented: wait for pending output requests\n"); + } + bce_vhci_transfer_queue_remove_pending(q); + if ((status = bce_vhci_cmd_endpoint_set_state( + &q->vhci->cq, q->dev_addr, endp_addr, BCE_VHCI_ENDPOINT_PAUSED, &q->state))) + return status; + if (q->state != BCE_VHCI_ENDPOINT_PAUSED) + return -EINVAL; + if (q->sq_in) + bce_cmd_flush_memory_queue(q->vhci->dev->cmd_cmdq, (u16) q->sq_in->qid); + if (q->sq_out) + bce_cmd_flush_memory_queue(q->vhci->dev->cmd_cmdq, (u16) q->sq_out->qid); + return 0; +} + +static void bce_vhci_urb_resume(struct bce_vhci_urb *urb); + +int bce_vhci_transfer_queue_do_resume(struct bce_vhci_transfer_queue *q) +{ + unsigned long flags; + int status; + struct urb *urb, *urbt; + struct bce_vhci_urb *vurb; + u8 endp_addr = (u8) (q->endp->desc.bEndpointAddress & 0x8F); + if ((status = bce_vhci_cmd_endpoint_set_state( + &q->vhci->cq, q->dev_addr, endp_addr, BCE_VHCI_ENDPOINT_ACTIVE, &q->state))) + return status; + if (q->state != BCE_VHCI_ENDPOINT_ACTIVE) + return -EINVAL; + spin_lock_irqsave(&q->urb_lock, flags); + q->active = true; + list_for_each_entry_safe(urb, urbt, &q->endp->urb_list, urb_list) { + vurb = urb->hcpriv; + if (vurb->state == BCE_VHCI_URB_INIT_PENDING) { + if (!bce_vhci_transfer_queue_can_init_urb(q)) + break; + bce_vhci_urb_init(vurb); + } else { + bce_vhci_urb_resume(vurb); + } + } + bce_vhci_transfer_queue_deliver_pending(q); + spin_unlock_irqrestore(&q->urb_lock, flags); + return 0; +} + +int bce_vhci_transfer_queue_pause(struct bce_vhci_transfer_queue *q, enum bce_vhci_pause_source src) +{ + int ret = 0; + mutex_lock(&q->pause_lock); + if ((q->paused_by & src) != src) { + if (!q->paused_by) + ret = bce_vhci_transfer_queue_do_pause(q); + if (!ret) + q->paused_by |= src; + } + mutex_unlock(&q->pause_lock); + return ret; +} + +int bce_vhci_transfer_queue_resume(struct bce_vhci_transfer_queue *q, enum bce_vhci_pause_source src) +{ + int ret = 0; + mutex_lock(&q->pause_lock); + if (q->paused_by & src) { + if (!(q->paused_by & ~src)) + ret = bce_vhci_transfer_queue_do_resume(q); + if (!ret) + q->paused_by &= ~src; + } + mutex_unlock(&q->pause_lock); + return ret; +} + +static void bce_vhci_transfer_queue_reset_w(struct work_struct *work) +{ + unsigned long flags; + struct bce_vhci_transfer_queue *q = container_of(work, struct bce_vhci_transfer_queue, w_reset); + + mutex_lock(&q->pause_lock); + spin_lock_irqsave(&q->urb_lock, flags); + if (!q->stalled) { + spin_unlock_irqrestore(&q->urb_lock, flags); + mutex_unlock(&q->pause_lock); + return; + } + q->active = false; + spin_unlock_irqrestore(&q->urb_lock, flags); + q->paused_by |= BCE_VHCI_PAUSE_INTERNAL_WQ; + bce_vhci_transfer_queue_remove_pending(q); + if (q->sq_in) + bce_cmd_flush_memory_queue(q->vhci->dev->cmd_cmdq, (u16) q->sq_in->qid); + if (q->sq_out) + bce_cmd_flush_memory_queue(q->vhci->dev->cmd_cmdq, (u16) q->sq_out->qid); + bce_vhci_cmd_endpoint_reset(&q->vhci->cq, q->dev_addr, (u8) (q->endp->desc.bEndpointAddress & 0x8F)); + spin_lock_irqsave(&q->urb_lock, flags); + q->stalled = false; + spin_unlock_irqrestore(&q->urb_lock, flags); + mutex_unlock(&q->pause_lock); + bce_vhci_transfer_queue_resume(q, BCE_VHCI_PAUSE_INTERNAL_WQ); +} + +void bce_vhci_transfer_queue_request_reset(struct bce_vhci_transfer_queue *q) +{ + queue_work(q->vhci->tq_state_wq, &q->w_reset); +} + +static void bce_vhci_transfer_queue_init_pending_urbs(struct bce_vhci_transfer_queue *q) +{ + struct urb *urb, *urbt; + struct bce_vhci_urb *vurb; + list_for_each_entry_safe(urb, urbt, &q->endp->urb_list, urb_list) { + vurb = urb->hcpriv; + if (!bce_vhci_transfer_queue_can_init_urb(q)) + break; + if (vurb->state == BCE_VHCI_URB_INIT_PENDING) + bce_vhci_urb_init(vurb); + } +} + + + +static int bce_vhci_urb_data_start(struct bce_vhci_urb *urb, unsigned long *timeout); + +int bce_vhci_urb_create(struct bce_vhci_transfer_queue *q, struct urb *urb) +{ + unsigned long flags; + int status = 0; + struct bce_vhci_urb *vurb; + vurb = kzalloc(sizeof(struct bce_vhci_urb), GFP_KERNEL); + urb->hcpriv = vurb; + + vurb->q = q; + vurb->urb = urb; + vurb->dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; + vurb->is_control = (usb_endpoint_num(&urb->ep->desc) == 0); + + spin_lock_irqsave(&q->urb_lock, flags); + status = usb_hcd_link_urb_to_ep(q->vhci->hcd, urb); + if (status) { + spin_unlock_irqrestore(&q->urb_lock, flags); + urb->hcpriv = NULL; + kfree(vurb); + return status; + } + + if (q->active) { + if (bce_vhci_transfer_queue_can_init_urb(vurb->q)) + status = bce_vhci_urb_init(vurb); + else + vurb->state = BCE_VHCI_URB_INIT_PENDING; + } else { + if (q->stalled) + bce_vhci_transfer_queue_request_reset(q); + vurb->state = BCE_VHCI_URB_INIT_PENDING; + } + if (status) { + usb_hcd_unlink_urb_from_ep(q->vhci->hcd, urb); + urb->hcpriv = NULL; + kfree(vurb); + } else { + bce_vhci_transfer_queue_deliver_pending(q); + } + spin_unlock_irqrestore(&q->urb_lock, flags); + pr_debug("bce-vhci: [%02x] URB enqueued (dir = %s, size = %i)\n", q->endp_addr, + usb_urb_dir_in(urb) ? "IN" : "OUT", urb->transfer_buffer_length); + return status; +} + +static int bce_vhci_urb_init(struct bce_vhci_urb *vurb) +{ + int status = 0; + + if (vurb->q->remaining_active_requests == 0) { + pr_err("bce-vhci: cannot init request (remaining_active_requests = 0)\n"); + return -EINVAL; + } + + if (vurb->is_control) { + vurb->state = BCE_VHCI_URB_CONTROL_WAITING_FOR_SETUP_REQUEST; + } else { + status = bce_vhci_urb_data_start(vurb, NULL); + } + + if (!status) { + --vurb->q->remaining_active_requests; + } + return status; +} + +static void bce_vhci_urb_complete(struct bce_vhci_urb *urb, int status) +{ + struct bce_vhci_transfer_queue *q = urb->q; + struct bce_vhci *vhci = q->vhci; + struct urb *real_urb = urb->urb; + pr_debug("bce-vhci: [%02x] URB complete %i\n", q->endp_addr, status); + usb_hcd_unlink_urb_from_ep(vhci->hcd, real_urb); + real_urb->hcpriv = NULL; + real_urb->status = status; + if (urb->state != BCE_VHCI_URB_INIT_PENDING) + ++urb->q->remaining_active_requests; + kfree(urb); + list_add_tail(&real_urb->urb_list, &q->giveback_urb_list); +} + +int bce_vhci_urb_request_cancel(struct bce_vhci_transfer_queue *q, struct urb *urb, int status) +{ + struct bce_vhci_urb *vurb; + unsigned long flags; + int ret; + + spin_lock_irqsave(&q->urb_lock, flags); + if ((ret = usb_hcd_check_unlink_urb(q->vhci->hcd, urb, status))) { + spin_unlock_irqrestore(&q->urb_lock, flags); + return ret; + } + + vurb = urb->hcpriv; + /* If the URB wasn't posted to the device yet, we can still remove it on the host without pausing the queue. */ + if (vurb->state != BCE_VHCI_URB_INIT_PENDING) { + pr_debug("bce-vhci: [%02x] Cancelling URB\n", q->endp_addr); + + spin_unlock_irqrestore(&q->urb_lock, flags); + bce_vhci_transfer_queue_pause(q, BCE_VHCI_PAUSE_INTERNAL_WQ); + spin_lock_irqsave(&q->urb_lock, flags); + + ++q->remaining_active_requests; + } + + usb_hcd_unlink_urb_from_ep(q->vhci->hcd, urb); + + spin_unlock_irqrestore(&q->urb_lock, flags); + + usb_hcd_giveback_urb(q->vhci->hcd, urb, status); + + if (vurb->state != BCE_VHCI_URB_INIT_PENDING) + bce_vhci_transfer_queue_resume(q, BCE_VHCI_PAUSE_INTERNAL_WQ); + + kfree(vurb); + + return 0; +} + +static int bce_vhci_urb_data_transfer_in(struct bce_vhci_urb *urb, unsigned long *timeout) +{ + struct bce_vhci_message msg; + struct bce_qe_submission *s; + u32 tr_len; + int reservation1, reservation2 = -EFAULT; + + pr_debug("bce-vhci: [%02x] DMA from device %llx %x\n", urb->q->endp_addr, + (u64) urb->urb->transfer_dma, urb->urb->transfer_buffer_length); + + /* Reserve both a message and a submission, so we don't run into issues later. */ + reservation1 = bce_reserve_submission(urb->q->vhci->msg_asynchronous.sq, timeout); + if (!reservation1) + reservation2 = bce_reserve_submission(urb->q->sq_in, timeout); + if (reservation1 || reservation2) { + pr_err("bce-vhci: Failed to reserve a submission for URB data transfer\n"); + if (!reservation1) + bce_cancel_submission_reservation(urb->q->vhci->msg_asynchronous.sq); + return -ENOMEM; + } + + urb->send_offset = urb->receive_offset; + + tr_len = urb->urb->transfer_buffer_length - urb->send_offset; + + spin_lock(&urb->q->vhci->msg_asynchronous_lock); + msg.cmd = BCE_VHCI_CMD_TRANSFER_REQUEST; + msg.status = 0; + msg.param1 = ((urb->urb->ep->desc.bEndpointAddress & 0x8Fu) << 8) | urb->q->dev_addr; + msg.param2 = tr_len; + bce_vhci_message_queue_write(&urb->q->vhci->msg_asynchronous, &msg); + spin_unlock(&urb->q->vhci->msg_asynchronous_lock); + + s = bce_next_submission(urb->q->sq_in); + bce_set_submission_single(s, urb->urb->transfer_dma + urb->send_offset, tr_len); + bce_submit_to_device(urb->q->sq_in); + + urb->state = BCE_VHCI_URB_WAITING_FOR_COMPLETION; + return 0; +} + +static int bce_vhci_urb_data_start(struct bce_vhci_urb *urb, unsigned long *timeout) +{ + if (urb->dir == DMA_TO_DEVICE) { + if (urb->urb->transfer_buffer_length > 0) + urb->state = BCE_VHCI_URB_WAITING_FOR_TRANSFER_REQUEST; + else + urb->state = BCE_VHCI_URB_DATA_TRANSFER_COMPLETE; + return 0; + } else { + return bce_vhci_urb_data_transfer_in(urb, timeout); + } +} + +static int bce_vhci_urb_send_out_data(struct bce_vhci_urb *urb, dma_addr_t addr, size_t size) +{ + struct bce_qe_submission *s; + unsigned long timeout = 0; + if (bce_reserve_submission(urb->q->sq_out, &timeout)) { + pr_err("bce-vhci: Failed to reserve a submission for URB data transfer\n"); + return -EPIPE; + } + + pr_debug("bce-vhci: [%02x] DMA to device %llx %lx\n", urb->q->endp_addr, (u64) addr, size); + + s = bce_next_submission(urb->q->sq_out); + bce_set_submission_single(s, addr, size); + bce_submit_to_device(urb->q->sq_out); + return 0; +} + +static int bce_vhci_urb_data_update(struct bce_vhci_urb *urb, struct bce_vhci_message *msg) +{ + u32 tr_len; + int status; + if (urb->state == BCE_VHCI_URB_WAITING_FOR_TRANSFER_REQUEST) { + if (msg->cmd == BCE_VHCI_CMD_TRANSFER_REQUEST) { + tr_len = min(urb->urb->transfer_buffer_length - urb->send_offset, (u32) msg->param2); + if ((status = bce_vhci_urb_send_out_data(urb, urb->urb->transfer_dma + urb->send_offset, tr_len))) + return status; + urb->send_offset += tr_len; + urb->state = BCE_VHCI_URB_WAITING_FOR_COMPLETION; + return 0; + } + } + + /* 0x1000 in out queues aren't really unexpected */ + if (msg->cmd == BCE_VHCI_CMD_TRANSFER_REQUEST && urb->q->sq_out != NULL) + return -EAGAIN; + pr_err("bce-vhci: [%02x] %s URB unexpected message (state = %x, msg: %x %x %x %llx)\n", + urb->q->endp_addr, (urb->is_control ? "Control (data update)" : "Data"), urb->state, + msg->cmd, msg->status, msg->param1, msg->param2); + return -EAGAIN; +} + +static int bce_vhci_urb_data_transfer_completion(struct bce_vhci_urb *urb, struct bce_sq_completion_data *c) +{ + if (urb->state == BCE_VHCI_URB_WAITING_FOR_COMPLETION) { + urb->receive_offset += c->data_size; + if (urb->dir == DMA_FROM_DEVICE || urb->receive_offset >= urb->urb->transfer_buffer_length) { + urb->urb->actual_length = (u32) urb->receive_offset; + urb->state = BCE_VHCI_URB_DATA_TRANSFER_COMPLETE; + if (!urb->is_control) { + bce_vhci_urb_complete(urb, 0); + return -ENOENT; + } + } + } else { + pr_err("bce-vhci: [%02x] Data URB unexpected completion\n", urb->q->endp_addr); + } + return 0; +} + + +static int bce_vhci_urb_control_check_status(struct bce_vhci_urb *urb) +{ + struct bce_vhci_transfer_queue *q = urb->q; + if (urb->received_status == 0) + return 0; + if (urb->state == BCE_VHCI_URB_DATA_TRANSFER_COMPLETE || + (urb->received_status != BCE_VHCI_SUCCESS && urb->state != BCE_VHCI_URB_CONTROL_WAITING_FOR_SETUP_REQUEST && + urb->state != BCE_VHCI_URB_CONTROL_WAITING_FOR_SETUP_COMPLETION)) { + urb->state = BCE_VHCI_URB_CONTROL_COMPLETE; + if (urb->received_status != BCE_VHCI_SUCCESS) { + pr_err("bce-vhci: [%02x] URB failed: %x\n", urb->q->endp_addr, urb->received_status); + urb->q->active = false; + urb->q->stalled = true; + bce_vhci_urb_complete(urb, -EPIPE); + if (!list_empty(&q->endp->urb_list)) + bce_vhci_transfer_queue_request_reset(q); + return -ENOENT; + } + bce_vhci_urb_complete(urb, 0); + return -ENOENT; + } + return 0; +} + +static int bce_vhci_urb_control_update(struct bce_vhci_urb *urb, struct bce_vhci_message *msg) +{ + int status; + if (msg->cmd == BCE_VHCI_CMD_CONTROL_TRANSFER_STATUS) { + urb->received_status = msg->status; + return bce_vhci_urb_control_check_status(urb); + } + + if (urb->state == BCE_VHCI_URB_CONTROL_WAITING_FOR_SETUP_REQUEST) { + if (msg->cmd == BCE_VHCI_CMD_TRANSFER_REQUEST) { + if (bce_vhci_urb_send_out_data(urb, urb->urb->setup_dma, sizeof(struct usb_ctrlrequest))) { + pr_err("bce-vhci: [%02x] Failed to start URB setup transfer\n", urb->q->endp_addr); + return 0; /* TODO: fail the URB? */ + } + urb->state = BCE_VHCI_URB_CONTROL_WAITING_FOR_SETUP_COMPLETION; + pr_debug("bce-vhci: [%02x] Sent setup %llx\n", urb->q->endp_addr, urb->urb->setup_dma); + return 0; + } + } else if (urb->state == BCE_VHCI_URB_WAITING_FOR_TRANSFER_REQUEST || + urb->state == BCE_VHCI_URB_WAITING_FOR_COMPLETION) { + if ((status = bce_vhci_urb_data_update(urb, msg))) + return status; + return bce_vhci_urb_control_check_status(urb); + } + + /* 0x1000 in out queues aren't really unexpected */ + if (msg->cmd == BCE_VHCI_CMD_TRANSFER_REQUEST && urb->q->sq_out != NULL) + return -EAGAIN; + pr_err("bce-vhci: [%02x] Control URB unexpected message (state = %x, msg: %x %x %x %llx)\n", urb->q->endp_addr, + urb->state, msg->cmd, msg->status, msg->param1, msg->param2); + return -EAGAIN; +} + +static int bce_vhci_urb_control_transfer_completion(struct bce_vhci_urb *urb, struct bce_sq_completion_data *c) +{ + int status; + unsigned long timeout; + + if (urb->state == BCE_VHCI_URB_CONTROL_WAITING_FOR_SETUP_COMPLETION) { + if (c->data_size != sizeof(struct usb_ctrlrequest)) + pr_err("bce-vhci: [%02x] transfer complete data size mistmatch for usb_ctrlrequest (%llx instead of %lx)\n", + urb->q->endp_addr, c->data_size, sizeof(struct usb_ctrlrequest)); + + timeout = 1000; + status = bce_vhci_urb_data_start(urb, &timeout); + if (status) { + bce_vhci_urb_complete(urb, status); + return -ENOENT; + } + return 0; + } else if (urb->state == BCE_VHCI_URB_WAITING_FOR_TRANSFER_REQUEST || + urb->state == BCE_VHCI_URB_WAITING_FOR_COMPLETION) { + if ((status = bce_vhci_urb_data_transfer_completion(urb, c))) + return status; + return bce_vhci_urb_control_check_status(urb); + } else { + pr_err("bce-vhci: [%02x] Control URB unexpected completion (state = %x)\n", urb->q->endp_addr, urb->state); + } + return 0; +} + +static int bce_vhci_urb_update(struct bce_vhci_urb *urb, struct bce_vhci_message *msg) +{ + if (urb->state == BCE_VHCI_URB_INIT_PENDING) + return -EAGAIN; + if (urb->is_control) + return bce_vhci_urb_control_update(urb, msg); + else + return bce_vhci_urb_data_update(urb, msg); +} + +static int bce_vhci_urb_transfer_completion(struct bce_vhci_urb *urb, struct bce_sq_completion_data *c) +{ + if (urb->is_control) + return bce_vhci_urb_control_transfer_completion(urb, c); + else + return bce_vhci_urb_data_transfer_completion(urb, c); +} + +static void bce_vhci_urb_resume(struct bce_vhci_urb *urb) +{ + int status = 0; + if (urb->state == BCE_VHCI_URB_WAITING_FOR_COMPLETION) { + status = bce_vhci_urb_data_transfer_in(urb, NULL); + } + if (status) + bce_vhci_urb_complete(urb, status); +} diff --git a/drivers/staging/apple-bce/vhci/transfer.h b/drivers/staging/apple-bce/vhci/transfer.h new file mode 100644 index 000000000000..89ecad6bcf8f --- /dev/null +++ b/drivers/staging/apple-bce/vhci/transfer.h @@ -0,0 +1,73 @@ +#ifndef BCEDRIVER_TRANSFER_H +#define BCEDRIVER_TRANSFER_H + +#include +#include "queue.h" +#include "command.h" +#include "../queue.h" + +struct bce_vhci_list_message { + struct list_head list; + struct bce_vhci_message msg; +}; +enum bce_vhci_pause_source { + BCE_VHCI_PAUSE_INTERNAL_WQ = 1, + BCE_VHCI_PAUSE_FIRMWARE = 2, + BCE_VHCI_PAUSE_SUSPEND = 4, + BCE_VHCI_PAUSE_SHUTDOWN = 8 +}; +struct bce_vhci_transfer_queue { + struct bce_vhci *vhci; + struct usb_host_endpoint *endp; + enum bce_vhci_endpoint_state state; + u32 max_active_requests, remaining_active_requests; + bool active, stalled; + u32 paused_by; + bce_vhci_device_t dev_addr; + u8 endp_addr; + struct bce_queue_cq *cq; + struct bce_queue_sq *sq_in; + struct bce_queue_sq *sq_out; + struct list_head evq; + struct spinlock urb_lock; + struct mutex pause_lock; + struct list_head giveback_urb_list; + + struct work_struct w_reset; +}; +enum bce_vhci_urb_state { + BCE_VHCI_URB_INIT_PENDING, + + BCE_VHCI_URB_WAITING_FOR_TRANSFER_REQUEST, + BCE_VHCI_URB_WAITING_FOR_COMPLETION, + BCE_VHCI_URB_DATA_TRANSFER_COMPLETE, + + BCE_VHCI_URB_CONTROL_WAITING_FOR_SETUP_REQUEST, + BCE_VHCI_URB_CONTROL_WAITING_FOR_SETUP_COMPLETION, + BCE_VHCI_URB_CONTROL_COMPLETE +}; +struct bce_vhci_urb { + struct urb *urb; + struct bce_vhci_transfer_queue *q; + enum dma_data_direction dir; + bool is_control; + enum bce_vhci_urb_state state; + int received_status; + u32 send_offset; + u32 receive_offset; +}; + +void bce_vhci_create_transfer_queue(struct bce_vhci *vhci, struct bce_vhci_transfer_queue *q, + struct usb_host_endpoint *endp, bce_vhci_device_t dev_addr, enum dma_data_direction dir); +void bce_vhci_destroy_transfer_queue(struct bce_vhci *vhci, struct bce_vhci_transfer_queue *q); +void bce_vhci_transfer_queue_event(struct bce_vhci_transfer_queue *q, struct bce_vhci_message *msg); +int bce_vhci_transfer_queue_do_pause(struct bce_vhci_transfer_queue *q); +int bce_vhci_transfer_queue_do_resume(struct bce_vhci_transfer_queue *q); +int bce_vhci_transfer_queue_pause(struct bce_vhci_transfer_queue *q, enum bce_vhci_pause_source src); +int bce_vhci_transfer_queue_resume(struct bce_vhci_transfer_queue *q, enum bce_vhci_pause_source src); +void bce_vhci_transfer_queue_request_reset(struct bce_vhci_transfer_queue *q); + +int bce_vhci_urb_create(struct bce_vhci_transfer_queue *q, struct urb *urb); +int bce_vhci_urb_request_cancel(struct bce_vhci_transfer_queue *q, struct urb *urb, int status); + +#endif //BCEDRIVER_TRANSFER_H diff --git a/drivers/staging/apple-bce/vhci/vhci.c b/drivers/staging/apple-bce/vhci/vhci.c new file mode 100644 index 000000000000..eb26f55000d8 --- /dev/null +++ b/drivers/staging/apple-bce/vhci/vhci.c @@ -0,0 +1,759 @@ +#include "vhci.h" +#include "../apple_bce.h" +#include "command.h" +#include +#include +#include +#include + +static dev_t bce_vhci_chrdev; +static struct class *bce_vhci_class; +static const struct hc_driver bce_vhci_driver; +static u16 bce_vhci_port_mask = U16_MAX; + +static int bce_vhci_create_event_queues(struct bce_vhci *vhci); +static void bce_vhci_destroy_event_queues(struct bce_vhci *vhci); +static int bce_vhci_create_message_queues(struct bce_vhci *vhci); +static void bce_vhci_destroy_message_queues(struct bce_vhci *vhci); +static void bce_vhci_handle_firmware_events_w(struct work_struct *ws); +static void bce_vhci_firmware_event_completion(struct bce_queue_sq *sq); + +int bce_vhci_create(struct apple_bce_device *dev, struct bce_vhci *vhci) +{ + int status; + + spin_lock_init(&vhci->hcd_spinlock); + + vhci->dev = dev; + + vhci->vdevt = bce_vhci_chrdev; + vhci->vdev = device_create(bce_vhci_class, dev->dev, vhci->vdevt, NULL, "bce-vhci"); + if (IS_ERR_OR_NULL(vhci->vdev)) { + status = PTR_ERR(vhci->vdev); + goto fail_dev; + } + + if ((status = bce_vhci_create_message_queues(vhci))) + goto fail_mq; + if ((status = bce_vhci_create_event_queues(vhci))) + goto fail_eq; + + vhci->tq_state_wq = alloc_ordered_workqueue("bce-vhci-tq-state", 0); + INIT_WORK(&vhci->w_fw_events, bce_vhci_handle_firmware_events_w); + + vhci->hcd = usb_create_hcd(&bce_vhci_driver, vhci->vdev, "bce-vhci"); + if (!vhci->hcd) { + status = -ENOMEM; + goto fail_hcd; + } + vhci->hcd->self.sysdev = &dev->pci->dev; +#if LINUX_VERSION_CODE < KERNEL_VERSION(5,4,0) + vhci->hcd->self.uses_dma = 1; +#endif + *((struct bce_vhci **) vhci->hcd->hcd_priv) = vhci; + vhci->hcd->speed = HCD_USB2; + + if ((status = usb_add_hcd(vhci->hcd, 0, 0))) + goto fail_hcd; + + return 0; + +fail_hcd: + bce_vhci_destroy_event_queues(vhci); +fail_eq: + bce_vhci_destroy_message_queues(vhci); +fail_mq: + device_destroy(bce_vhci_class, vhci->vdevt); +fail_dev: + if (!status) + status = -EINVAL; + return status; +} + +void bce_vhci_destroy(struct bce_vhci *vhci) +{ + usb_remove_hcd(vhci->hcd); + bce_vhci_destroy_event_queues(vhci); + bce_vhci_destroy_message_queues(vhci); + device_destroy(bce_vhci_class, vhci->vdevt); +} + +struct bce_vhci *bce_vhci_from_hcd(struct usb_hcd *hcd) +{ + return *((struct bce_vhci **) hcd->hcd_priv); +} + +int bce_vhci_start(struct usb_hcd *hcd) +{ + struct bce_vhci *vhci = bce_vhci_from_hcd(hcd); + int status; + u16 port_mask = 0; + bce_vhci_port_t port_no = 0; + if ((status = bce_vhci_cmd_controller_enable(&vhci->cq, 1, &port_mask))) + return status; + vhci->port_mask = port_mask; + vhci->port_power_mask = 0; + if ((status = bce_vhci_cmd_controller_start(&vhci->cq))) + return status; + port_mask = vhci->port_mask; + while (port_mask) { + port_no += 1; + port_mask >>= 1; + } + vhci->port_count = port_no; + return 0; +} + +void bce_vhci_stop(struct usb_hcd *hcd) +{ + struct bce_vhci *vhci = bce_vhci_from_hcd(hcd); + bce_vhci_cmd_controller_disable(&vhci->cq); +} + +static int bce_vhci_hub_status_data(struct usb_hcd *hcd, char *buf) +{ + return 0; +} + +static int bce_vhci_reset_device(struct bce_vhci *vhci, int index, u16 timeout); + +static int bce_vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength) +{ + struct bce_vhci *vhci = bce_vhci_from_hcd(hcd); + int status; + struct usb_hub_descriptor *hd; + struct usb_hub_status *hs; + struct usb_port_status *ps; + u32 port_status; + // pr_info("bce-vhci: bce_vhci_hub_control %x %i %i [bufl=%i]\n", typeReq, wValue, wIndex, wLength); + if (typeReq == GetHubDescriptor && wLength >= sizeof(struct usb_hub_descriptor)) { + hd = (struct usb_hub_descriptor *) buf; + memset(hd, 0, sizeof(*hd)); + hd->bDescLength = sizeof(struct usb_hub_descriptor); + hd->bDescriptorType = USB_DT_HUB; + hd->bNbrPorts = (u8) vhci->port_count; + hd->wHubCharacteristics = HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_INDV_PORT_OCPM; + hd->bPwrOn2PwrGood = 0; + hd->bHubContrCurrent = 0; + return 0; + } else if (typeReq == GetHubStatus && wLength >= sizeof(struct usb_hub_status)) { + hs = (struct usb_hub_status *) buf; + memset(hs, 0, sizeof(*hs)); + hs->wHubStatus = 0; + hs->wHubChange = 0; + return 0; + } else if (typeReq == GetPortStatus && wLength >= 4 /* usb 2.0 */) { + ps = (struct usb_port_status *) buf; + ps->wPortStatus = 0; + ps->wPortChange = 0; + + if (vhci->port_power_mask & BIT(wIndex)) + ps->wPortStatus |= USB_PORT_STAT_POWER; + + if (!(bce_vhci_port_mask & BIT(wIndex))) + return 0; + + if ((status = bce_vhci_cmd_port_status(&vhci->cq, (u8) wIndex, 0, &port_status))) + return status; + + if (port_status & 16) + ps->wPortStatus |= USB_PORT_STAT_ENABLE | USB_PORT_STAT_HIGH_SPEED; + if (port_status & 4) + ps->wPortStatus |= USB_PORT_STAT_CONNECTION; + if (port_status & 2) + ps->wPortStatus |= USB_PORT_STAT_OVERCURRENT; + if (port_status & 8) + ps->wPortStatus |= USB_PORT_STAT_RESET; + if (port_status & 0x60) + ps->wPortStatus |= USB_PORT_STAT_SUSPEND; + + if (port_status & 0x40000) + ps->wPortChange |= USB_PORT_STAT_C_CONNECTION; + + pr_debug("bce-vhci: Translated status %x to %x:%x\n", port_status, ps->wPortStatus, ps->wPortChange); + return 0; + } else if (typeReq == SetPortFeature) { + if (wValue == USB_PORT_FEAT_POWER) { + status = bce_vhci_cmd_port_power_on(&vhci->cq, (u8) wIndex); + /* As far as I am aware, power status is not part of the port status so store it separately */ + if (!status) + vhci->port_power_mask |= BIT(wIndex); + return status; + } + if (wValue == USB_PORT_FEAT_RESET) { + return bce_vhci_reset_device(vhci, wIndex, wValue); + } + if (wValue == USB_PORT_FEAT_SUSPEND) { + /* TODO: Am I supposed to also suspend the endpoints? */ + pr_debug("bce-vhci: Suspending port %i\n", wIndex); + return bce_vhci_cmd_port_suspend(&vhci->cq, (u8) wIndex); + } + } else if (typeReq == ClearPortFeature) { + if (wValue == USB_PORT_FEAT_ENABLE) + return bce_vhci_cmd_port_disable(&vhci->cq, (u8) wIndex); + if (wValue == USB_PORT_FEAT_POWER) { + status = bce_vhci_cmd_port_power_off(&vhci->cq, (u8) wIndex); + if (!status) + vhci->port_power_mask &= ~BIT(wIndex); + return status; + } + if (wValue == USB_PORT_FEAT_C_CONNECTION) + return bce_vhci_cmd_port_status(&vhci->cq, (u8) wIndex, 0x40000, &port_status); + if (wValue == USB_PORT_FEAT_C_RESET) { /* I don't think I can transfer it in any way */ + return 0; + } + if (wValue == USB_PORT_FEAT_SUSPEND) { + pr_debug("bce-vhci: Resuming port %i\n", wIndex); + return bce_vhci_cmd_port_resume(&vhci->cq, (u8) wIndex); + } + } + pr_err("bce-vhci: bce_vhci_hub_control unhandled request: %x %i %i [bufl=%i]\n", typeReq, wValue, wIndex, wLength); + dump_stack(); + return -EIO; +} + +static int bce_vhci_enable_device(struct usb_hcd *hcd, struct usb_device *udev) +{ + struct bce_vhci *vhci = bce_vhci_from_hcd(hcd); + struct bce_vhci_device *vdev; + bce_vhci_device_t devid; + pr_info("bce_vhci_enable_device\n"); + + if (vhci->port_to_device[udev->portnum]) + return 0; + + /* We need to early address the device */ + if (bce_vhci_cmd_device_create(&vhci->cq, udev->portnum, &devid)) + return -EIO; + + pr_info("bce_vhci_cmd_device_create %i -> %i\n", udev->portnum, devid); + + vdev = kzalloc(sizeof(struct bce_vhci_device), GFP_KERNEL); + vhci->port_to_device[udev->portnum] = devid; + vhci->devices[devid] = vdev; + + bce_vhci_create_transfer_queue(vhci, &vdev->tq[0], &udev->ep0, devid, DMA_BIDIRECTIONAL); + udev->ep0.hcpriv = &vdev->tq[0]; + vdev->tq_mask |= BIT(0); + + bce_vhci_cmd_endpoint_create(&vhci->cq, devid, &udev->ep0.desc); + return 0; +} + +static int bce_vhci_address_device(struct usb_hcd *hcd, struct usb_device *udev, unsigned int timeout_ms) //TODO: follow timeout +{ + /* This is the same as enable_device, but instead in the old scheme */ + return bce_vhci_enable_device(hcd, udev); +} + +static void bce_vhci_free_device(struct usb_hcd *hcd, struct usb_device *udev) +{ + struct bce_vhci *vhci = bce_vhci_from_hcd(hcd); + int i; + bce_vhci_device_t devid; + struct bce_vhci_device *dev; + pr_info("bce_vhci_free_device %i\n", udev->portnum); + if (!vhci->port_to_device[udev->portnum]) + return; + devid = vhci->port_to_device[udev->portnum]; + dev = vhci->devices[devid]; + for (i = 0; i < 32; i++) { + if (dev->tq_mask & BIT(i)) { + bce_vhci_transfer_queue_pause(&dev->tq[i], BCE_VHCI_PAUSE_SHUTDOWN); + bce_vhci_cmd_endpoint_destroy(&vhci->cq, devid, (u8) i); + bce_vhci_destroy_transfer_queue(vhci, &dev->tq[i]); + } + } + vhci->devices[devid] = NULL; + vhci->port_to_device[udev->portnum] = 0; + bce_vhci_cmd_device_destroy(&vhci->cq, devid); + kfree(dev); +} + +static int bce_vhci_reset_device(struct bce_vhci *vhci, int index, u16 timeout) +{ + struct bce_vhci_device *dev = NULL; + bce_vhci_device_t devid; + int i; + int status; + enum dma_data_direction dir; + pr_info("bce_vhci_reset_device %i\n", index); + + devid = vhci->port_to_device[index]; + if (devid) { + dev = vhci->devices[devid]; + + for (i = 0; i < 32; i++) { + if (dev->tq_mask & BIT(i)) { + bce_vhci_transfer_queue_pause(&dev->tq[i], BCE_VHCI_PAUSE_SHUTDOWN); + bce_vhci_cmd_endpoint_destroy(&vhci->cq, devid, (u8) i); + bce_vhci_destroy_transfer_queue(vhci, &dev->tq[i]); + } + } + vhci->devices[devid] = NULL; + vhci->port_to_device[index] = 0; + bce_vhci_cmd_device_destroy(&vhci->cq, devid); + } + status = bce_vhci_cmd_port_reset(&vhci->cq, (u8) index, timeout); + + if (dev) { + if ((status = bce_vhci_cmd_device_create(&vhci->cq, index, &devid))) + return status; + vhci->devices[devid] = dev; + vhci->port_to_device[index] = devid; + + for (i = 0; i < 32; i++) { + if (dev->tq_mask & BIT(i)) { + dir = usb_endpoint_dir_in(&dev->tq[i].endp->desc) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; + if (i == 0) + dir = DMA_BIDIRECTIONAL; + bce_vhci_create_transfer_queue(vhci, &dev->tq[i], dev->tq[i].endp, devid, dir); + bce_vhci_cmd_endpoint_create(&vhci->cq, devid, &dev->tq[i].endp->desc); + } + } + } + + return status; +} + +static int bce_vhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev) +{ + return 0; +} + +static int bce_vhci_get_frame_number(struct usb_hcd *hcd) +{ + return 0; +} + +static int bce_vhci_bus_suspend(struct usb_hcd *hcd) +{ + int i, j; + int status; + struct bce_vhci *vhci = bce_vhci_from_hcd(hcd); + pr_info("bce_vhci: suspend started\n"); + + pr_info("bce_vhci: suspend endpoints\n"); + for (i = 0; i < 16; i++) { + if (!vhci->port_to_device[i]) + continue; + for (j = 0; j < 32; j++) { + if (!(vhci->devices[vhci->port_to_device[i]]->tq_mask & BIT(j))) + continue; + bce_vhci_transfer_queue_pause(&vhci->devices[vhci->port_to_device[i]]->tq[j], + BCE_VHCI_PAUSE_SUSPEND); + } + } + + pr_info("bce_vhci: suspend ports\n"); + for (i = 0; i < 16; i++) { + if (!vhci->port_to_device[i]) + continue; + bce_vhci_cmd_port_suspend(&vhci->cq, i); + } + pr_info("bce_vhci: suspend controller\n"); + if ((status = bce_vhci_cmd_controller_pause(&vhci->cq))) + return status; + + bce_vhci_event_queue_pause(&vhci->ev_commands); + bce_vhci_event_queue_pause(&vhci->ev_system); + bce_vhci_event_queue_pause(&vhci->ev_isochronous); + bce_vhci_event_queue_pause(&vhci->ev_interrupt); + bce_vhci_event_queue_pause(&vhci->ev_asynchronous); + pr_info("bce_vhci: suspend done\n"); + return 0; +} + +static int bce_vhci_bus_resume(struct usb_hcd *hcd) +{ + int i, j; + int status; + struct bce_vhci *vhci = bce_vhci_from_hcd(hcd); + pr_info("bce_vhci: resume started\n"); + + bce_vhci_event_queue_resume(&vhci->ev_system); + bce_vhci_event_queue_resume(&vhci->ev_isochronous); + bce_vhci_event_queue_resume(&vhci->ev_interrupt); + bce_vhci_event_queue_resume(&vhci->ev_asynchronous); + bce_vhci_event_queue_resume(&vhci->ev_commands); + + pr_info("bce_vhci: resume controller\n"); + if ((status = bce_vhci_cmd_controller_start(&vhci->cq))) + return status; + + pr_info("bce_vhci: resume ports\n"); + for (i = 0; i < 16; i++) { + if (!vhci->port_to_device[i]) + continue; + bce_vhci_cmd_port_resume(&vhci->cq, i); + } + pr_info("bce_vhci: resume endpoints\n"); + for (i = 0; i < 16; i++) { + if (!vhci->port_to_device[i]) + continue; + for (j = 0; j < 32; j++) { + if (!(vhci->devices[vhci->port_to_device[i]]->tq_mask & BIT(j))) + continue; + bce_vhci_transfer_queue_resume(&vhci->devices[vhci->port_to_device[i]]->tq[j], + BCE_VHCI_PAUSE_SUSPEND); + } + } + + pr_info("bce_vhci: resume done\n"); + return 0; +} + +static int bce_vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) +{ + struct bce_vhci_transfer_queue *q = urb->ep->hcpriv; + pr_debug("bce_vhci_urb_enqueue %i:%x\n", q->dev_addr, urb->ep->desc.bEndpointAddress); + if (!q) + return -ENOENT; + return bce_vhci_urb_create(q, urb); +} + +static int bce_vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) +{ + struct bce_vhci_transfer_queue *q = urb->ep->hcpriv; + pr_debug("bce_vhci_urb_dequeue %x\n", urb->ep->desc.bEndpointAddress); + return bce_vhci_urb_request_cancel(q, urb, status); +} + +static void bce_vhci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep) +{ + struct bce_vhci_transfer_queue *q = ep->hcpriv; + pr_debug("bce_vhci_endpoint_reset\n"); + if (q) + bce_vhci_transfer_queue_request_reset(q); +} + +static u8 bce_vhci_endpoint_index(u8 addr) +{ + if (addr & 0x80) + return (u8) (0x10 + (addr & 0xf)); + return (u8) (addr & 0xf); +} + +static int bce_vhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *endp) +{ + u8 endp_index = bce_vhci_endpoint_index(endp->desc.bEndpointAddress); + struct bce_vhci *vhci = bce_vhci_from_hcd(hcd); + bce_vhci_device_t devid = vhci->port_to_device[udev->portnum]; + struct bce_vhci_device *vdev = vhci->devices[devid]; + pr_debug("bce_vhci_add_endpoint %x/%x:%x\n", udev->portnum, devid, endp_index); + + if (udev->bus->root_hub == udev) /* The USB hub */ + return 0; + if (vdev == NULL) + return -ENODEV; + if (vdev->tq_mask & BIT(endp_index)) { + endp->hcpriv = &vdev->tq[endp_index]; + return 0; + } + + bce_vhci_create_transfer_queue(vhci, &vdev->tq[endp_index], endp, devid, + usb_endpoint_dir_in(&endp->desc) ? DMA_FROM_DEVICE : DMA_TO_DEVICE); + endp->hcpriv = &vdev->tq[endp_index]; + vdev->tq_mask |= BIT(endp_index); + + bce_vhci_cmd_endpoint_create(&vhci->cq, devid, &endp->desc); + return 0; +} + +static int bce_vhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *endp) +{ + u8 endp_index = bce_vhci_endpoint_index(endp->desc.bEndpointAddress); + struct bce_vhci *vhci = bce_vhci_from_hcd(hcd); + bce_vhci_device_t devid = vhci->port_to_device[udev->portnum]; + struct bce_vhci_transfer_queue *q = endp->hcpriv; + struct bce_vhci_device *vdev = vhci->devices[devid]; + pr_info("bce_vhci_drop_endpoint %x:%x\n", udev->portnum, endp_index); + if (!q) { + if (vdev && vdev->tq_mask & BIT(endp_index)) { + pr_err("something deleted the hcpriv?\n"); + q = &vdev->tq[endp_index]; + } else { + return 0; + } + } + + bce_vhci_cmd_endpoint_destroy(&vhci->cq, devid, (u8) (endp->desc.bEndpointAddress & 0x8Fu)); + vhci->devices[devid]->tq_mask &= ~BIT(endp_index); + bce_vhci_destroy_transfer_queue(vhci, q); + return 0; +} + +static int bce_vhci_create_message_queues(struct bce_vhci *vhci) +{ + if (bce_vhci_message_queue_create(vhci, &vhci->msg_commands, "VHC1HostCommands") || + bce_vhci_message_queue_create(vhci, &vhci->msg_system, "VHC1HostSystemEvents") || + bce_vhci_message_queue_create(vhci, &vhci->msg_isochronous, "VHC1HostIsochronousEvents") || + bce_vhci_message_queue_create(vhci, &vhci->msg_interrupt, "VHC1HostInterruptEvents") || + bce_vhci_message_queue_create(vhci, &vhci->msg_asynchronous, "VHC1HostAsynchronousEvents")) { + bce_vhci_destroy_message_queues(vhci); + return -EINVAL; + } + spin_lock_init(&vhci->msg_asynchronous_lock); + bce_vhci_command_queue_create(&vhci->cq, &vhci->msg_commands); + return 0; +} + +static void bce_vhci_destroy_message_queues(struct bce_vhci *vhci) +{ + bce_vhci_command_queue_destroy(&vhci->cq); + bce_vhci_message_queue_destroy(vhci, &vhci->msg_commands); + bce_vhci_message_queue_destroy(vhci, &vhci->msg_system); + bce_vhci_message_queue_destroy(vhci, &vhci->msg_isochronous); + bce_vhci_message_queue_destroy(vhci, &vhci->msg_interrupt); + bce_vhci_message_queue_destroy(vhci, &vhci->msg_asynchronous); +} + +static void bce_vhci_handle_system_event(struct bce_vhci_event_queue *q, struct bce_vhci_message *msg); +static void bce_vhci_handle_usb_event(struct bce_vhci_event_queue *q, struct bce_vhci_message *msg); + +static int bce_vhci_create_event_queues(struct bce_vhci *vhci) +{ + vhci->ev_cq = bce_create_cq(vhci->dev, 0x100); + if (!vhci->ev_cq) + return -EINVAL; +#define CREATE_EVENT_QUEUE(field, name, cb) bce_vhci_event_queue_create(vhci, &vhci->field, name, cb) + if (__bce_vhci_event_queue_create(vhci, &vhci->ev_commands, "VHC1FirmwareCommands", + bce_vhci_firmware_event_completion) || + CREATE_EVENT_QUEUE(ev_system, "VHC1FirmwareSystemEvents", bce_vhci_handle_system_event) || + CREATE_EVENT_QUEUE(ev_isochronous, "VHC1FirmwareIsochronousEvents", bce_vhci_handle_usb_event) || + CREATE_EVENT_QUEUE(ev_interrupt, "VHC1FirmwareInterruptEvents", bce_vhci_handle_usb_event) || + CREATE_EVENT_QUEUE(ev_asynchronous, "VHC1FirmwareAsynchronousEvents", bce_vhci_handle_usb_event)) { + bce_vhci_destroy_event_queues(vhci); + return -EINVAL; + } +#undef CREATE_EVENT_QUEUE + return 0; +} + +static void bce_vhci_destroy_event_queues(struct bce_vhci *vhci) +{ + bce_vhci_event_queue_destroy(vhci, &vhci->ev_commands); + bce_vhci_event_queue_destroy(vhci, &vhci->ev_system); + bce_vhci_event_queue_destroy(vhci, &vhci->ev_isochronous); + bce_vhci_event_queue_destroy(vhci, &vhci->ev_interrupt); + bce_vhci_event_queue_destroy(vhci, &vhci->ev_asynchronous); + if (vhci->ev_cq) + bce_destroy_cq(vhci->dev, vhci->ev_cq); +} + +static void bce_vhci_send_fw_event_response(struct bce_vhci *vhci, struct bce_vhci_message *req, u16 status) +{ + unsigned long timeout = 1000; + struct bce_vhci_message r = *req; + r.cmd = (u16) (req->cmd | 0x8000u); + r.status = status; + r.param1 = req->param1; + r.param2 = 0; + + if (bce_reserve_submission(vhci->msg_system.sq, &timeout)) { + pr_err("bce-vhci: Cannot reserve submision for FW event reply\n"); + return; + } + bce_vhci_message_queue_write(&vhci->msg_system, &r); +} + +static int bce_vhci_handle_firmware_event(struct bce_vhci *vhci, struct bce_vhci_message *msg) +{ + unsigned long flags; + bce_vhci_device_t devid; + u8 endp; + struct bce_vhci_device *dev; + struct bce_vhci_transfer_queue *tq; + if (msg->cmd == BCE_VHCI_CMD_ENDPOINT_REQUEST_STATE || msg->cmd == BCE_VHCI_CMD_ENDPOINT_SET_STATE) { + devid = (bce_vhci_device_t) (msg->param1 & 0xff); + endp = bce_vhci_endpoint_index((u8) ((msg->param1 >> 8) & 0xff)); + dev = vhci->devices[devid]; + if (!dev || !(dev->tq_mask & BIT(endp))) + return BCE_VHCI_BAD_ARGUMENT; + tq = &dev->tq[endp]; + } + + if (msg->cmd == BCE_VHCI_CMD_ENDPOINT_REQUEST_STATE) { + if (msg->param2 == BCE_VHCI_ENDPOINT_ACTIVE) { + bce_vhci_transfer_queue_resume(tq, BCE_VHCI_PAUSE_FIRMWARE); + return BCE_VHCI_SUCCESS; + } else if (msg->param2 == BCE_VHCI_ENDPOINT_PAUSED) { + bce_vhci_transfer_queue_pause(tq, BCE_VHCI_PAUSE_FIRMWARE); + return BCE_VHCI_SUCCESS; + } + return BCE_VHCI_BAD_ARGUMENT; + } else if (msg->cmd == BCE_VHCI_CMD_ENDPOINT_SET_STATE) { + if (msg->param2 == BCE_VHCI_ENDPOINT_STALLED) { + tq->state = msg->param2; + spin_lock_irqsave(&tq->urb_lock, flags); + tq->stalled = true; + spin_unlock_irqrestore(&tq->urb_lock, flags); + return BCE_VHCI_SUCCESS; + } + return BCE_VHCI_BAD_ARGUMENT; + } + pr_warn("bce-vhci: Unhandled firmware event: %x s=%x p1=%x p2=%llx\n", + msg->cmd, msg->status, msg->param1, msg->param2); + return BCE_VHCI_BAD_ARGUMENT; +} + +static void bce_vhci_handle_firmware_events_w(struct work_struct *ws) +{ + size_t cnt = 0; + int result; + struct bce_vhci *vhci = container_of(ws, struct bce_vhci, w_fw_events); + struct bce_queue_sq *sq = vhci->ev_commands.sq; + struct bce_sq_completion_data *cq; + struct bce_vhci_message *msg, *msg2 = NULL; + + while (true) { + if (msg2) { + msg = msg2; + msg2 = NULL; + } else if ((cq = bce_next_completion(sq))) { + if (cq->status == BCE_COMPLETION_ABORTED) { + bce_notify_submission_complete(sq); + continue; + } + msg = &vhci->ev_commands.data[sq->head]; + } else { + break; + } + + pr_debug("bce-vhci: Got fw event: %x s=%x p1=%x p2=%llx\n", msg->cmd, msg->status, msg->param1, msg->param2); + if ((cq = bce_next_completion(sq))) { + msg2 = &vhci->ev_commands.data[(sq->head + 1) % sq->el_count]; + pr_debug("bce-vhci: Got second fw event: %x s=%x p1=%x p2=%llx\n", + msg->cmd, msg->status, msg->param1, msg->param2); + if (cq->status != BCE_COMPLETION_ABORTED && + msg2->cmd == (msg->cmd | 0x4000) && msg2->param1 == msg->param1) { + /* Take two elements */ + pr_debug("bce-vhci: Cancelled\n"); + bce_vhci_send_fw_event_response(vhci, msg, BCE_VHCI_ABORT); + + bce_notify_submission_complete(sq); + bce_notify_submission_complete(sq); + msg2 = NULL; + cnt += 2; + continue; + } + + pr_warn("bce-vhci: Handle fw event - unexpected cancellation\n"); + } + + result = bce_vhci_handle_firmware_event(vhci, msg); + bce_vhci_send_fw_event_response(vhci, msg, (u16) result); + + + bce_notify_submission_complete(sq); + ++cnt; + } + bce_vhci_event_queue_submit_pending(&vhci->ev_commands, cnt); + if (atomic_read(&sq->available_commands) == sq->el_count - 1) { + pr_debug("bce-vhci: complete\n"); + complete(&vhci->ev_commands.queue_empty_completion); + } +} + +static void bce_vhci_firmware_event_completion(struct bce_queue_sq *sq) +{ + struct bce_vhci_event_queue *q = sq->userdata; + queue_work(q->vhci->tq_state_wq, &q->vhci->w_fw_events); +} + +static void bce_vhci_handle_system_event(struct bce_vhci_event_queue *q, struct bce_vhci_message *msg) +{ + if (msg->cmd & 0x8000) { + bce_vhci_command_queue_deliver_completion(&q->vhci->cq, msg); + } else { + pr_warn("bce-vhci: Unhandled system event: %x s=%x p1=%x p2=%llx\n", + msg->cmd, msg->status, msg->param1, msg->param2); + } +} + +static void bce_vhci_handle_usb_event(struct bce_vhci_event_queue *q, struct bce_vhci_message *msg) +{ + bce_vhci_device_t devid; + u8 endp; + struct bce_vhci_device *dev; + if (msg->cmd & 0x8000) { + bce_vhci_command_queue_deliver_completion(&q->vhci->cq, msg); + } else if (msg->cmd == BCE_VHCI_CMD_TRANSFER_REQUEST || msg->cmd == BCE_VHCI_CMD_CONTROL_TRANSFER_STATUS) { + devid = (bce_vhci_device_t) (msg->param1 & 0xff); + endp = bce_vhci_endpoint_index((u8) ((msg->param1 >> 8) & 0xff)); + dev = q->vhci->devices[devid]; + if (!dev || (dev->tq_mask & BIT(endp)) == 0) { + pr_err("bce-vhci: Didn't find destination for transfer queue event\n"); + return; + } + bce_vhci_transfer_queue_event(&dev->tq[endp], msg); + } else { + pr_warn("bce-vhci: Unhandled USB event: %x s=%x p1=%x p2=%llx\n", + msg->cmd, msg->status, msg->param1, msg->param2); + } +} + + + +static const struct hc_driver bce_vhci_driver = { + .description = "bce-vhci", + .product_desc = "BCE VHCI Host Controller", + .hcd_priv_size = sizeof(struct bce_vhci *), + +#if LINUX_VERSION_CODE < KERNEL_VERSION(5,4,0) + .flags = HCD_USB2, +#else + .flags = HCD_USB2 | HCD_DMA, +#endif + + .start = bce_vhci_start, + .stop = bce_vhci_stop, + .hub_status_data = bce_vhci_hub_status_data, + .hub_control = bce_vhci_hub_control, + .urb_enqueue = bce_vhci_urb_enqueue, + .urb_dequeue = bce_vhci_urb_dequeue, + .enable_device = bce_vhci_enable_device, + .free_dev = bce_vhci_free_device, + .address_device = bce_vhci_address_device, + .add_endpoint = bce_vhci_add_endpoint, + .drop_endpoint = bce_vhci_drop_endpoint, + .endpoint_reset = bce_vhci_endpoint_reset, + .check_bandwidth = bce_vhci_check_bandwidth, + .get_frame_number = bce_vhci_get_frame_number, + .bus_suspend = bce_vhci_bus_suspend, + .bus_resume = bce_vhci_bus_resume +}; + + +int __init bce_vhci_module_init(void) +{ + int result; + if ((result = alloc_chrdev_region(&bce_vhci_chrdev, 0, 1, "bce-vhci"))) + goto fail_chrdev; +#if LINUX_VERSION_CODE < KERNEL_VERSION(6,4,0) + bce_vhci_class = class_create(THIS_MODULE, "bce-vhci"); +#else + bce_vhci_class = class_create("bce-vhci"); +#endif + if (IS_ERR(bce_vhci_class)) { + result = PTR_ERR(bce_vhci_class); + goto fail_class; + } + return 0; + +fail_class: + class_destroy(bce_vhci_class); +fail_chrdev: + unregister_chrdev_region(bce_vhci_chrdev, 1); + if (!result) + result = -EINVAL; + return result; +} +void __exit bce_vhci_module_exit(void) +{ + class_destroy(bce_vhci_class); + unregister_chrdev_region(bce_vhci_chrdev, 1); +} + +module_param_named(vhci_port_mask, bce_vhci_port_mask, ushort, 0444); +MODULE_PARM_DESC(vhci_port_mask, "Specifies which VHCI ports are enabled"); diff --git a/drivers/staging/apple-bce/vhci/vhci.h b/drivers/staging/apple-bce/vhci/vhci.h new file mode 100644 index 000000000000..6c2e22622f4c --- /dev/null +++ b/drivers/staging/apple-bce/vhci/vhci.h @@ -0,0 +1,52 @@ +#ifndef BCE_VHCI_H +#define BCE_VHCI_H + +#include "queue.h" +#include "transfer.h" + +struct usb_hcd; +struct bce_queue_cq; + +struct bce_vhci_device { + struct bce_vhci_transfer_queue tq[32]; + u32 tq_mask; +}; +struct bce_vhci { + struct apple_bce_device *dev; + dev_t vdevt; + struct device *vdev; + struct usb_hcd *hcd; + struct spinlock hcd_spinlock; + struct bce_vhci_message_queue msg_commands; + struct bce_vhci_message_queue msg_system; + struct bce_vhci_message_queue msg_isochronous; + struct bce_vhci_message_queue msg_interrupt; + struct bce_vhci_message_queue msg_asynchronous; + struct spinlock msg_asynchronous_lock; + struct bce_vhci_command_queue cq; + struct bce_queue_cq *ev_cq; + struct bce_vhci_event_queue ev_commands; + struct bce_vhci_event_queue ev_system; + struct bce_vhci_event_queue ev_isochronous; + struct bce_vhci_event_queue ev_interrupt; + struct bce_vhci_event_queue ev_asynchronous; + u16 port_mask; + u8 port_count; + u16 port_power_mask; + bce_vhci_device_t port_to_device[16]; + struct bce_vhci_device *devices[16]; + struct workqueue_struct *tq_state_wq; + struct work_struct w_fw_events; +}; + +int __init bce_vhci_module_init(void); +void __exit bce_vhci_module_exit(void); + +int bce_vhci_create(struct apple_bce_device *dev, struct bce_vhci *vhci); +void bce_vhci_destroy(struct bce_vhci *vhci); +int bce_vhci_start(struct usb_hcd *hcd); +void bce_vhci_stop(struct usb_hcd *hcd); + +struct bce_vhci *bce_vhci_from_hcd(struct usb_hcd *hcd); + +#endif //BCE_VHCI_H diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index e02ba15f6e34..b35734d03109 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -517,6 +517,19 @@ static int usb_unbind_interface(struct device *dev) return 0; } +static void usb_shutdown_interface(struct device *dev) +{ + struct usb_interface *intf = to_usb_interface(dev); + struct usb_driver *driver; + + if (!dev->driver) + return; + + driver = to_usb_driver(dev->driver); + if (driver->shutdown) + driver->shutdown(intf); +} + /** * usb_driver_claim_interface - bind a driver to an interface * @driver: the driver to be bound @@ -1059,6 +1072,7 @@ int usb_register_driver(struct usb_driver *new_driver, struct module *owner, new_driver->driver.bus = &usb_bus_type; new_driver->driver.probe = usb_probe_interface; new_driver->driver.remove = usb_unbind_interface; + new_driver->driver.shutdown = usb_shutdown_interface; new_driver->driver.owner = owner; new_driver->driver.mod_name = mod_name; new_driver->driver.dev_groups = new_driver->dev_groups; diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index b610a2de4ae5..0cdbcf82554f 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -1232,9 +1232,8 @@ static void uas_disconnect(struct usb_interface *intf) * hang on reboot when the device is still in uas mode. Note the reset is * necessary as some devices won't revert to usb-storage mode without it. */ -static void uas_shutdown(struct device *dev) +static void uas_shutdown(struct usb_interface *intf) { - struct usb_interface *intf = to_usb_interface(dev); struct usb_device *udev = interface_to_usbdev(intf); struct Scsi_Host *shost = usb_get_intfdata(intf); struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; @@ -1257,7 +1256,7 @@ static struct usb_driver uas_driver = { .suspend = uas_suspend, .resume = uas_resume, .reset_resume = uas_reset_resume, - .driver.shutdown = uas_shutdown, + .shutdown = uas_shutdown, .id_table = uas_usb_ids, }; diff --git a/include/drm/drm_format_helper.h b/include/drm/drm_format_helper.h index 428d81afe215..aa1604d92c1a 100644 --- a/include/drm/drm_format_helper.h +++ b/include/drm/drm_format_helper.h @@ -96,6 +96,9 @@ void drm_fb_xrgb8888_to_rgba5551(struct iosys_map *dst, const unsigned int *dst_ void drm_fb_xrgb8888_to_rgb888(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state); +void drm_fb_xrgb8888_to_bgr888(struct iosys_map *dst, const unsigned int *dst_pitch, + const struct iosys_map *src, const struct drm_framebuffer *fb, + const struct drm_rect *clip, struct drm_format_conv_state *state); void drm_fb_xrgb8888_to_argb8888(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state); diff --git a/include/linux/efi.h b/include/linux/efi.h index 418e555459da..3a6c04a9f9aa 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -74,10 +74,10 @@ typedef void *efi_handle_t; */ typedef guid_t efi_guid_t __aligned(__alignof__(u32)); -#define EFI_GUID(a, b, c, d...) (efi_guid_t){ { \ +#define EFI_GUID(a, b, c, d...) ((efi_guid_t){ { \ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ (b) & 0xff, ((b) >> 8) & 0xff, \ - (c) & 0xff, ((c) >> 8) & 0xff, d } } + (c) & 0xff, ((c) >> 8) & 0xff, d } }) /* * Generic EFI table header @@ -385,6 +385,7 @@ void efi_native_runtime_setup(void); #define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20) #define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) #define APPLE_PROPERTIES_PROTOCOL_GUID EFI_GUID(0x91bd12fe, 0xf6c3, 0x44fb, 0xa5, 0xb7, 0x51, 0x22, 0xab, 0x30, 0x3a, 0xe0) +#define APPLE_SET_OS_PROTOCOL_GUID EFI_GUID(0xc5c5da95, 0x7d5c, 0x45e6, 0xb2, 0xf1, 0x3f, 0xd5, 0x2b, 0xb1, 0x00, 0x77) #define EFI_TCG2_PROTOCOL_GUID EFI_GUID(0x607f766c, 0x7455, 0x42be, 0x93, 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f) #define EFI_TCG2_FINAL_EVENTS_TABLE_GUID EFI_GUID(0x1e2ed096, 0x30e2, 0x4254, 0xbd, 0x89, 0x86, 0x3b, 0xbe, 0xf8, 0x23, 0x25) #define EFI_LOAD_FILE_PROTOCOL_GUID EFI_GUID(0x56ec3091, 0x954c, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) diff --git a/include/linux/hid.h b/include/linux/hid.h index 8e06d89698e6..6cdb5a451453 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -940,6 +940,8 @@ extern void hidinput_report_event(struct hid_device *hid, struct hid_report *rep extern int hidinput_connect(struct hid_device *hid, unsigned int force); extern void hidinput_disconnect(struct hid_device *); +struct hid_field *hid_find_field(struct hid_device *hdev, unsigned int report_type, + unsigned int application, unsigned int usage); int hid_set_field(struct hid_field *, unsigned, __s32); int hid_input_report(struct hid_device *hid, enum hid_report_type type, u8 *data, u32 size, int interrupt); diff --git a/include/linux/usb.h b/include/linux/usb.h index 1913a13833f2..832997a9da0a 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -1171,6 +1171,7 @@ extern ssize_t usb_show_dynids(struct usb_dynids *dynids, char *buf); * post_reset method is called. * @post_reset: Called by usb_reset_device() after the device * has been reset + * @shutdown: Called at shut-down time to quiesce the device. * @id_table: USB drivers use ID table to support hotplugging. * Export this with MODULE_DEVICE_TABLE(usb,...). This must be set * or your driver's probe function will never get called. @@ -1222,6 +1223,8 @@ struct usb_driver { int (*pre_reset)(struct usb_interface *intf); int (*post_reset)(struct usb_interface *intf); + void (*shutdown)(struct usb_interface *intf); + const struct usb_device_id *id_table; const struct attribute_group **dev_groups; diff --git a/lib/test_printf.c b/lib/test_printf.c index 69b6a5e177f2..a318bb72a165 100644 --- a/lib/test_printf.c +++ b/lib/test_printf.c @@ -745,18 +745,26 @@ static void __init fwnode_pointer(void) static void __init fourcc_pointer(void) { struct { + char type; u32 code; char *str; } const try[] = { - { 0x3231564e, "NV12 little-endian (0x3231564e)", }, - { 0xb231564e, "NV12 big-endian (0xb231564e)", }, - { 0x10111213, ".... little-endian (0x10111213)", }, - { 0x20303159, "Y10 little-endian (0x20303159)", }, + { 'c', 0x3231564e, "NV12 little-endian (0x3231564e)", }, + { 'c', 0xb231564e, "NV12 big-endian (0xb231564e)", }, + { 'c', 0x10111213, ".... little-endian (0x10111213)", }, + { 'c', 0x20303159, "Y10 little-endian (0x20303159)", }, + { 'h', 0x67503030, "gP00 (0x67503030)", }, + { 'r', 0x30305067, "gP00 (0x67503030)", }, + { 'l', cpu_to_le32(0x67503030), "gP00 (0x67503030)", }, + { 'b', cpu_to_be32(0x67503030), "gP00 (0x67503030)", }, }; unsigned int i; - for (i = 0; i < ARRAY_SIZE(try); i++) - test(try[i].str, "%p4cc", &try[i].code); + for (i = 0; i < ARRAY_SIZE(try); i++) { + char fmt[] = { '%', 'p', '4', 'c', try[i].type, '\0' }; + + test(try[i].str, fmt, &try[i].code); + } } static void __init diff --git a/lib/vsprintf.c b/lib/vsprintf.c index cdd4e2314bfc..4feaea1815fa 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -1760,27 +1760,50 @@ char *fourcc_string(char *buf, char *end, const u32 *fourcc, char output[sizeof("0123 little-endian (0x01234567)")]; char *p = output; unsigned int i; + bool pix_fmt = false; u32 orig, val; - if (fmt[1] != 'c' || fmt[2] != 'c') + if (fmt[1] != 'c') return error_string(buf, end, "(%p4?)", spec); if (check_pointer(&buf, end, fourcc, spec)) return buf; orig = get_unaligned(fourcc); - val = orig & ~BIT(31); + switch (fmt[2]) { + case 'h': + val = orig; + break; + case 'r': + val = orig = swab32(orig); + break; + case 'l': + val = orig = le32_to_cpu(orig); + break; + case 'b': + val = orig = be32_to_cpu(orig); + break; + case 'c': + /* Pixel formats are printed LSB-first */ + val = swab32(orig & ~BIT(31)); + pix_fmt = true; + break; + default: + return error_string(buf, end, "(%p4?)", spec); + } for (i = 0; i < sizeof(u32); i++) { - unsigned char c = val >> (i * 8); + unsigned char c = val >> ((3 - i) * 8); /* Print non-control ASCII characters as-is, dot otherwise */ *p++ = isascii(c) && isprint(c) ? c : '.'; } - *p++ = ' '; - strcpy(p, orig & BIT(31) ? "big-endian" : "little-endian"); - p += strlen(p); + if (pix_fmt) { + *p++ = ' '; + strcpy(p, orig & BIT(31) ? "big-endian" : "little-endian"); + p += strlen(p); + } *p++ = ' '; *p++ = '('; @@ -2355,6 +2378,7 @@ char *rust_fmt_argument(char *buf, char *end, void *ptr); * read the documentation (path below) first. * - 'NF' For a netdev_features_t * - '4cc' V4L2 or DRM FourCC code, with endianness and raw numerical value. + * - '4c[hlbr]' Generic FourCC code. * - 'h[CDN]' For a variable-length buffer, it prints it as a hex string with * a certain separator (' ' by default): * C colon diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 2b812210b412..4c3a8cc6ef15 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -6909,7 +6909,7 @@ sub process { ($extension eq "f" && defined $qualifier && $qualifier !~ /^w/) || ($extension eq "4" && - defined $qualifier && $qualifier !~ /^cc/)) { + defined $qualifier && $qualifier !~ /^c[chlbr]/)) { $bad_specifier = $specifier; last; } -- 2.46.0.rc1