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-rw-r--r--SOURCES/0001-PCI-Add-MCFG-quirks-for-Tegra194-host-controllers.patch87
1 files changed, 59 insertions, 28 deletions
diff --git a/SOURCES/0001-PCI-Add-MCFG-quirks-for-Tegra194-host-controllers.patch b/SOURCES/0001-PCI-Add-MCFG-quirks-for-Tegra194-host-controllers.patch
index 6fc81f8..bf1e480 100644
--- a/SOURCES/0001-PCI-Add-MCFG-quirks-for-Tegra194-host-controllers.patch
+++ b/SOURCES/0001-PCI-Add-MCFG-quirks-for-Tegra194-host-controllers.patch
@@ -1,6 +1,6 @@
-From 92c547f35f4852908f40c2861d9b9d10e0c5099b Mon Sep 17 00:00:00 2001
-From: Peter Robinson <pbrobinson@gmail.com>
-Date: Sun, 28 Jun 2020 16:48:50 +0100
+From 9134295c0515492b1ab7733c0290b2afde336d6b Mon Sep 17 00:00:00 2001
+From: Vidya Sagar <vidyas@nvidia.com>
+Date: Sat, 11 Jan 2020 00:45:00 +0530
Subject: [PATCH] PCI: Add MCFG quirks for Tegra194 host controllers
The PCIe controller in Tegra194 SoC is not completely ECAM-compliant.
@@ -15,25 +15,20 @@ to generate respective configuration accesses just like the way it is
done in DesignWare core sub-system.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
-Reported-by: kbuild test robot <lkp@intel.com>
-Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
----
-V3:
-* Removed MCFG address hardcoding in pci_mcfg.c file
-* Started using 'dbi_base' for accessing root port's own config space
-* and using 'config_base' for accessing config space of downstream hierarchy
-
-V2:
-* Fixed build issues reported by kbuild test bot
+Acked-by: Thierry Reding <treding@nvidia.com>
+[ Updated by jonathanh@nvidia.com only permit building the Tegra194
+ PCIe driver into the kernel and not as a module ]
+Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
drivers/acpi/pci_mcfg.c | 7 ++
+ drivers/pci/controller/dwc/Kconfig | 10 +-
drivers/pci/controller/dwc/Makefile | 2 +-
drivers/pci/controller/dwc/pcie-tegra194.c | 102 +++++++++++++++++++++
include/linux/pci-ecam.h | 1 +
- 4 files changed, 111 insertions(+), 1 deletion(-)
+ 5 files changed, 117 insertions(+), 5 deletions(-)
diff --git a/drivers/acpi/pci_mcfg.c b/drivers/acpi/pci_mcfg.c
-index 6b347d9920cc2..7071814081736 100644
+index 54b36b7ad47d9..6573d495d9c1f 100644
--- a/drivers/acpi/pci_mcfg.c
+++ b/drivers/acpi/pci_mcfg.c
@@ -116,6 +116,13 @@ static struct mcfg_fixup mcfg_quirks[] = {
@@ -50,8 +45,44 @@ index 6b347d9920cc2..7071814081736 100644
#define XGENE_V1_ECAM_MCFG(rev, seg) \
{"APM ", "XGENE ", rev, seg, MCFG_BUS_ANY, \
&xgene_v1_pcie_ecam_ops }
+diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
+index 044a3761c44f2..e4ee4bf9ac64a 100644
+--- a/drivers/pci/controller/dwc/Kconfig
++++ b/drivers/pci/controller/dwc/Kconfig
+@@ -247,25 +247,27 @@ config PCI_MESON
+ implement the driver.
+
+ config PCIE_TEGRA194
+- tristate
++ bool
+
+ config PCIE_TEGRA194_HOST
+- tristate "NVIDIA Tegra194 (and later) PCIe controller - Host Mode"
++ bool "NVIDIA Tegra194 (and later) PCIe controller - Host Mode"
+ depends on ARCH_TEGRA_194_SOC || COMPILE_TEST
+ depends on PCI_MSI_IRQ_DOMAIN
+ select PCIE_DW_HOST
+ select PHY_TEGRA194_P2U
+ select PCIE_TEGRA194
++ default y if ARCH_TEGRA_194_SOC
+ help
+ Enables support for the PCIe controller in the NVIDIA Tegra194 SoC to
+ work in host mode. There are two instances of PCIe controllers in
+ Tegra194. This controller can work either as EP or RC. In order to
+ enable host-specific features PCIE_TEGRA194_HOST must be selected and
+ in order to enable device-specific features PCIE_TEGRA194_EP must be
+- selected. This uses the DesignWare core.
++ selected. This uses the DesignWare core. ACPI platforms with Tegra194
++ don't need to enable this.
+
+ config PCIE_TEGRA194_EP
+- tristate "NVIDIA Tegra194 (and later) PCIe controller - Endpoint Mode"
++ bool "NVIDIA Tegra194 (and later) PCIe controller - Endpoint Mode"
+ depends on ARCH_TEGRA_194_SOC || COMPILE_TEST
+ depends on PCI_ENDPOINT
+ select PCIE_DW_EP
diff --git a/drivers/pci/controller/dwc/Makefile b/drivers/pci/controller/dwc/Makefile
-index 8a637cfcf6e99..76a6c52b8500e 100644
+index a751553fa0dbd..dbb9818765566 100644
--- a/drivers/pci/controller/dwc/Makefile
+++ b/drivers/pci/controller/dwc/Makefile
@@ -17,7 +17,6 @@ obj-$(CONFIG_PCIE_INTEL_GW) += pcie-intel-gw.o
@@ -60,16 +91,16 @@ index 8a637cfcf6e99..76a6c52b8500e 100644
obj-$(CONFIG_PCI_MESON) += pci-meson.o
-obj-$(CONFIG_PCIE_TEGRA194) += pcie-tegra194.o
obj-$(CONFIG_PCIE_UNIPHIER) += pcie-uniphier.o
+ obj-$(CONFIG_PCIE_UNIPHIER_EP) += pcie-uniphier-ep.o
- # The following drivers are for devices that use the generic ACPI
-@@ -33,4 +32,5 @@ obj-$(CONFIG_PCIE_UNIPHIER) += pcie-uniphier.o
+@@ -34,4 +33,5 @@ obj-$(CONFIG_PCIE_UNIPHIER_EP) += pcie-uniphier-ep.o
ifdef CONFIG_PCI
obj-$(CONFIG_ARM64) += pcie-al.o
obj-$(CONFIG_ARM64) += pcie-hisi.o
+obj-$(CONFIG_ARM64) += pcie-tegra194.o
endif
diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
-index ae30a2fd3716a..571b39c5cac63 100644
+index 92b77f7d83546..7b3d581795197 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -22,6 +22,8 @@
@@ -169,7 +200,7 @@ index ae30a2fd3716a..571b39c5cac63 100644
+ return (void __iomem *)(pcie->config_base + where);
+}
+
-+struct pci_ecam_ops tegra194_pcie_ops = {
++const struct pci_ecam_ops tegra194_pcie_ops = {
+ .bus_shift = 20,
+ .init = tegra194_acpi_init,
+ .pci_ops = {
@@ -185,7 +216,7 @@ index ae30a2fd3716a..571b39c5cac63 100644
static inline struct tegra_pcie_dw *to_tegra_pcie(struct dw_pcie *pci)
{
return container_of(pci, struct tegra_pcie_dw, pci);
-@@ -2406,3 +2505,6 @@ MODULE_DEVICE_TABLE(of, tegra_pcie_dw_of_match);
+@@ -2405,3 +2504,6 @@ MODULE_DEVICE_TABLE(of, tegra_pcie_dw_of_match);
MODULE_AUTHOR("Vidya Sagar <vidyas@nvidia.com>");
MODULE_DESCRIPTION("NVIDIA PCIe host controller driver");
MODULE_LICENSE("GPL v2");
@@ -193,17 +224,17 @@ index ae30a2fd3716a..571b39c5cac63 100644
+#endif /* CONFIG_PCIE_TEGRA194 */
+
diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h
-index a73164c85e78b..6156140dcbb65 100644
+index 1af5cb02ef7f9..3fb16ada505a0 100644
--- a/include/linux/pci-ecam.h
+++ b/include/linux/pci-ecam.h
-@@ -57,6 +57,7 @@ extern struct pci_ecam_ops pci_thunder_ecam_ops; /* Cavium ThunderX 1.x */
- extern struct pci_ecam_ops xgene_v1_pcie_ecam_ops; /* APM X-Gene PCIe v1 */
- extern struct pci_ecam_ops xgene_v2_pcie_ecam_ops; /* APM X-Gene PCIe v2.x */
- extern struct pci_ecam_ops al_pcie_ops; /* Amazon Annapurna Labs PCIe */
-+extern struct pci_ecam_ops tegra194_pcie_ops; /* Tegra194 PCIe */
+@@ -57,6 +57,7 @@ extern const struct pci_ecam_ops pci_thunder_ecam_ops; /* Cavium ThunderX 1.x */
+ extern const struct pci_ecam_ops xgene_v1_pcie_ecam_ops; /* APM X-Gene PCIe v1 */
+ extern const struct pci_ecam_ops xgene_v2_pcie_ecam_ops; /* APM X-Gene PCIe v2.x */
+ extern const struct pci_ecam_ops al_pcie_ops; /* Amazon Annapurna Labs PCIe */
++extern const struct pci_ecam_ops tegra194_pcie_ops; /* Tegra194 PCIe */
#endif
- #ifdef CONFIG_PCI_HOST_COMMON
+ #if IS_ENABLED(CONFIG_PCI_HOST_COMMON)
--
2.26.2