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/* $NetBSD: sticreg.h,v 1.9 2008/09/08 23:36:54 gmcgarry Exp $ */
/*-
* Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andrew Doran.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _TC_STICREG_H_
#define _TC_STICREG_H_
/*
* PixelStamp command packets take this general format:
*
* command word
* plane mask & primitive count
* always zero
* update method
*
* per-packet context (optional):
* line width
* xy mask
* cliping rectangle min & max
* rgb constant
* z constant
*
* per-primitive context (optional):
* xy mask
* xy mask address
* primitive data (vertices, spans info, video)
* line width
* halfspace equals conditions
* rgb flat, or rgb{1,2,3} smooth
* z flat, or z{1,2,3} smooth
*/
/*
* Command word.
*/
/* Base command */
#define STAMP_CMD_POINTS (0x0000)
#define STAMP_CMD_LINES (0x0001)
#define STAMP_CMD_TRIANGLES (0x0002)
#define STAMP_CMD_COPYSPANS (0x0005)
#define STAMP_CMD_READSPANS (0x0006)
#define STAMP_CMD_WRITESPANS (0x0007)
#define STAMP_CMD_VIDEO (0x0008)
/* Color */
#define STAMP_RGB_NONE (0x0000)
#define STAMP_RGB_CONST (0x0010)
#define STAMP_RGB_FLAT (0x0020)
#define STAMP_RGB_SMOOTH (0x0030)
/* Z */
#define STAMP_Z_NONE (0x0000)
#define STAMP_Z_CONST (0x0040)
#define STAMP_Z_FLAT (0x0080)
#define STAMP_Z_SMOOTH (0x00c0)
/* XYMASK */
#define STAMP_XY_NONE (0x0000)
#define STAMP_XY_PERPACKET (0x0100)
#define STAMP_XY_PERPRIMATIVE (0x0200)
/* Line width */
#define STAMP_LW_NONE (0x0000)
#define STAMP_LW_PERPACKET (0x0400)
#define STAMP_LW_PERPRIMATIVE (0x0800)
/* Miscellaneous flags */
#define STAMP_CLIPRECT (0x00080000)
#define STAMP_MESH (0x00200000)
#define STAMP_AALINE (0x00800000)
#define STAMP_HS_EQUALS (0x80000000)
/*
* Update word.
*/
/* XXX What does this do? Perhaps for 96-bit boards? */
#define STAMP_PLANE_8X3 (0 << 5)
#define STAMP_PLANE_24 (1 << 5)
/* Write enable */
#define STAMP_WE_SIGN (0x04 << 8)
#define STAMP_WE_XYMASK (0x02 << 8)
#define STAMP_WE_CLIPRECT (0x01 << 8)
#define STAMP_WE_NONE (0x00 << 8)
/* Pixel write method */
#define STAMP_METHOD_CLEAR (0x60 << 12)
#define STAMP_METHOD_AND (0x14 << 12)
#define STAMP_METHOD_ANDREV (0x15 << 12)
#define STAMP_METHOD_COPY (0x20 << 12)
#define STAMP_METHOD_ANDINV (0x16 << 12)
#define STAMP_METHOD_NOOP (0x40 << 12)
#define STAMP_METHOD_XOR (0x11 << 12)
#define STAMP_METHOD_OR (0x0f << 12)
#define STAMP_METHOD_NOR (0x17 << 12)
#define STAMP_METHOD_EQUIV (0x10 << 12)
#define STAMP_METHOD_INV (0x4e << 12)
#define STAMP_METHOD_ORREV (0x0e << 12)
#define STAMP_METHOD_COPYINV (0x2d << 12)
#define STAMP_METHOD_ORINV (0x0d << 12)
#define STAMP_METHOD_NAND (0x0c << 12)
#define STAMP_METHOD_SET (0x6c << 12)
#define STAMP_METHOD_SUM (0x00 << 12)
#define STAMP_METHOD_DIFF (0x02 << 12)
#define STAMP_METHOD_REVDIFF (0x01 << 12)
/* Double buffering */
#define STAMP_DB_NONE (0x00 << 28)
#define STAMP_DB_01 (0x01 << 28)
#define STAMP_DB_12 (0x02 << 28)
#define STAMP_DB_02 (0x04 << 28)
/* Miscellaneous flags */
#define STAMP_UPDATE_ENABLE (1 << 0)
#define STAMP_SAVE_SIGN (1 << 6)
#define STAMP_SAVE_ALPHA (1 << 7)
#define STAMP_SUPERSAMPLE (1 << 11)
#define STAMP_SPAN (1 << 19)
#define STAMP_COPYSPAN_ALIGNED (1 << 20)
#define STAMP_MINMAX (1 << 21)
#define STAMP_MULT (1 << 22)
#define STAMP_MULTACC (1 << 23)
#define STAMP_HALF_BUFF (1 << 27)
#define STAMP_INITIALIZE (1 << 31)
/*
* XYMASK address calculation.
*/
#define XMASKADDR(sw, sx, a) (((a)-((sx) % (sw))) & 15)
#define YMASKADDR(shm, sy, b) (((b)-((sy) & (shm))) & 15)
#define XYMASKADDR(sw,shm,x,y,a,b) \
(XMASKADDR(sw,x,a) << 16 | YMASKADDR(shm,y,b))
/*
* Miscellenous constants.
*/
#define STIC_MAGIC_X 370
#define STIC_MAGIC_Y 37
/*
* Poll register magic values.
*/
#define STAMP_OK (0)
#define STAMP_BUSY (1)
#define STAMP_RETRIES (100000)
#define STAMP_DELAY (10)
/*
* STIC registers.
*/
struct stic_regs {
u_int32_t sr_pad0;
u_int32_t sr_pad1;
u_int32_t sr_hsync;
u_int32_t sr_hsync2;
u_int32_t sr_hblank;
u_int32_t sr_vsync;
u_int32_t sr_vblank;
u_int32_t sr_vtest;
u_int32_t sr_ipdvint;
u_int32_t sr_pad2;
u_int32_t sr_sticsr;
u_int32_t sr_busdat;
u_int32_t sr_busadr;
u_int32_t sr_pad3;
u_int32_t sr_buscsr;
u_int32_t sr_modcl;
} __packed;
/*
* Bit definitions for stic_regs::sticsr.
*/
#define STIC_CSR_TSTFNC 0x00000003
# define STIC_CSR_TSTFNC_NORMAL 0
# define STIC_CSR_TSTFNC_PARITY 1
# define STIC_CSR_TSTFNC_CNTPIX 2
# define STIC_CSR_TSTFNC_TSTDAC 3
#define STIC_CSR_CHECKPAR 0x00000004
#define STIC_CSR_STARTVT 0x00000010
#define STIC_CSR_START 0x00000020
#define STIC_CSR_RESET 0x00000040
#define STIC_CSR_STARTST 0x00000080
/*
* Bit definitions for stic_regs::int. Three four-bit wide fields, for
* error (E), vertical-blank (V), and packet-done (P) intererupts,
* respectively. The low-order three bits of each field are interrupt
* enable, condition flagged, and nybble write enable. The top bit of each
* field is unused.
*/
#define STIC_INT_E_EN 0x00000001
#define STIC_INT_E 0x00000002
#define STIC_INT_E_WE 0x00000004
#define STIC_INT_V_EN 0x00000100
#define STIC_INT_V 0x00000200
#define STIC_INT_V_WE 0x00000400
#define STIC_INT_P_EN 0x00010000
#define STIC_INT_P 0x00020000
#define STIC_INT_P_WE 0x00040000
#define STIC_INT_E_MASK (STIC_INT_E_EN | STIC_INT_E | STIC_INT_E_WE)
#define STIC_INT_V_MASK (STIC_INT_V_EN | STIC_INT_V | STIC_INT_V_WE)
#define STIC_INT_P_MASK (STIC_INT_P_EN | STIC_INT_P | STIC_INT_P_WE)
#define STIC_INT_MASK (STIC_INT_E_MASK | STIC_INT_P_MASK | STIC_INT_V_MASK)
#define STIC_INT_WE (STIC_INT_E_WE | STIC_INT_V_WE | STIC_INT_P_WE)
#define STIC_INT_CLR (STIC_INT_E_EN | STIC_INT_V_EN | STIC_INT_P_EN)
/*
* On DMA: reading from a STIC poll register causes load & execution of
* the packet at the correspoinding physical address. Either STAMP_OK
* or STAMP_BUSY will be returned to indicate status.
*
* The STIC sees only 23-bits (8MB) of address space. Bits 21-22 in
* physical address space map to bits 27-28, and bits 15-20 map to bits
* 18-23 in the STIC's warped view of the word. On the PXG, the STIC
* sees only the onboard SRAM (so any `physical addresses' are offsets
* into the beginning of the SRAM).
*/
#endif /* _TC_STICREG_H_ */
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