/*
* SiS 300/630/730/540/315/550/650/740 frame buffer driver
* for Linux kernels 2.4.x and 2.5.x
*
* 2D acceleration part
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the named License,
* or any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
*
* Based on the X driver's sis300_accel.h which is
* Copyright (C) 2001-2004 by Thomas Winischhofer, Vienna, Austria
* and sis310_accel.h which is
* Copyright (C) 2001-2004 by Thomas Winischhofer, Vienna, Austria
*
* Author: Thomas Winischhofer <thomas@winischhofer.net>:
* (see http://www.winischhofer.net/
* for more information and updates)
*/
#ifndef _SISFB_ACCEL_H
#define _SISFB_ACCEL_H
/* Guard accelerator accesses with spin_lock_irqsave? Works well without. */
#undef SISFB_USE_SPINLOCKS
#ifdef SISFB_USE_SPINLOCKS
#include <linux/spinlock.h>
#define CRITBEGIN spin_lock_irqsave(&ivideo.lockaccel), critflags);
#define CRITEND spin_unlock_irqrestore(&ivideo.lockaccel), critflags);
#define CRITFLAGS unsigned long critflags;
#else
#define CRITBEGIN
#define CRITEND
#define CRITFLAGS
#endif
/* Definitions for the SIS engine communication. */
#define PATREGSIZE 384 /* Pattern register size. 384 bytes @ 0x8300 */
#define BR(x) (0x8200 | (x) << 2)
#define PBR(x) (0x8300 | (x) << 2)
/* SiS300 engine commands */
#define BITBLT 0x00000000 /* Blit */
#define COLOREXP 0x00000001 /* Color expand */
#define ENCOLOREXP 0x00000002 /* Enhanced color expand */
#define MULTIPLE_SCANLINE 0x00000003 /* ? */
#define LINE 0x00000004 /* Draw line */
#define TRAPAZOID_FILL 0x00000005 /* Fill trapezoid */
#define TRANSPARENT_BITBLT 0x00000006 /* Transparent Blit */
/* Additional engine commands for 315 */
#define ALPHA_BLEND 0x00000007 /* Alpha blend ? */
#define A3D_FUNCTION 0x00000008 /* 3D command ? */
#define CLEAR_Z_BUFFER 0x00000009 /* ? */
#define GRADIENT_FILL 0x0000000A /* Gradient fill */
#define STRETCH_BITBLT 0x0000000B /* Stretched Blit */
/* source select */
#define SRCVIDEO 0x00000000 /* source is video RAM */
#define SRCSYSTEM 0x00000010 /* source is system memory */
#define SRCCPUBLITBUF SRCSYSTEM /* source is CPU-driven BitBuffer (for color expand) */
#define SRCAGP 0x00000020 /* source is AGP memory (?) */
/* Pattern flags */
#define PATFG 0x00000000 /* foreground color */
#define PATPATREG 0x00000040 /* pattern in pattern buffer (0x8300) */
#define PATMONO 0x00000080 /* mono pattern */
/* blitting direction (300 series only) */
#define X_INC 0x00010000
#define X_DEC 0x00000000
#define Y_INC 0x00020000
#define Y_DEC 0x00000000
/* Clipping flags */
#define NOCLIP 0x00000000
#define NOMERGECLIP 0x04000000
#define CLIPENABLE 0x00040000
#define CLIPWITHOUTMERGE 0x04040000
/* Transparency */
#define OPAQUE 0x00000000
#define TRANSPARENT 0x00100000
/* ? */
#define DSTAGP 0x02000000
#define DSTVIDEO 0x02000000
/* Line */
#define LINE_STYLE 0x00800000
#define NO_RESET_COUNTER 0x00400000
#define NO_LAST_PIXEL 0x00200000
/* Subfunctions for Color/Enhanced Color Expansion (315 only) */
#define COLOR_TO_MONO 0x00100000
#define AA_TEXT 0x00200000
/* Some general registers for 315 series */
#define SRC_ADDR 0x8200
#define SRC_PITCH 0x8204
#define AGP_BASE 0x8206 /* color-depth dependent value */
#define SRC_Y 0x8208
#define SRC_X 0x820A
#define DST_Y 0x820C
#define DST_X 0x820E
#define DST_ADDR 0x8210
#define DST_PITCH 0x8214
#define DST_HEIGHT 0x8216
#define RECT_WIDTH 0x8218
#define RECT_HEIGHT 0x821A
#define PAT_FGCOLOR 0x821C
#define PAT_BGCOLOR 0x8220
#define SRC_FGCOLOR 0x8224
#define SRC_BGCOLOR 0x8228
#define MONO_MASK 0x822C
#define LEFT_CLIP 0x8234
#define TOP_CLIP 0x8236
#define RIGHT_CLIP 0x8238
#define BOTTOM_CLIP 0x823A
#define COMMAND_READY 0x823C
#define FIRE_TRIGGER 0x8240
#define PATTERN_REG 0x8300 /* 384 bytes pattern buffer */
/* Line registers */
#define LINE_X0 SRC_Y
#define LINE_X1 DST_Y
#define LINE_Y0 SRC_X
#define LINE_Y1 DST_X
#define LINE_COUNT RECT_WIDTH
#define LINE_STYLE_PERIOD RECT_HEIGHT
#define LINE_STYLE_0 MONO_MASK
#define LINE_STYLE_1 0x8230
#define LINE_XN PATTERN_REG
#define LINE_YN PATTERN_REG+2
/* Transparent bitblit registers */
#define TRANS_DST_KEY_HIGH PAT_FGCOLOR
#define TRANS_DST_KEY_LOW PAT_BGCOLOR
#define TRANS_SRC_KEY_HIGH SRC_FGCOLOR
#define TRANS_SRC_KEY_LOW SRC_BGCOLOR
/* Queue */
#define Q_BASE_ADDR 0x85C0 /* Base address of software queue (?) */
#define Q_WRITE_PTR 0x85C4 /* Current write pointer (?) */
#define Q_READ_PTR 0x85C8 /* Current read pointer (?) */
#define Q_STATUS 0x85CC /* queue status */
#define MMIO_IN8(base, offset) \
*(volatile u8 *)(((u8*)(base)) + (offset))
#define MMIO_IN16(base, offset) \
*(volatile u16 *)(void *)(((u8*)(base)) + (offset))
#define MMIO_IN32(base, offset) \
*(volatile u32 *)(void *)(((u8*)(base)) + (offset))
#define MMIO_OUT8(base, offset, val) \
*(volatile u8 *)(((u8*)(base)) + (offset)) = (val)
#define MMIO_OUT16(base, offset, val) \
*(volatile u16 *)(void *)(((u8*)(base)) + (offset)) = (val)
#define MMIO_OUT32(base, offset, val) \
*(volatile u32 *)(void *)(((u8*)(base)) + (offset)) = (val)
/* ------------- SiS 300 series -------------- */
/* Macros to do useful things with the SIS BitBLT engine */
/* BR(16) (0x8420):
bit 31 2D engine: 1 is idle,
bit 30 3D engine: 1 is idle,
bit 29 Command queue: 1 is empty
bits 28:24: Current CPU driven BitBlt buffer stage bit[4:0]
bits 15:0: Current command queue length
*/
/* TW: BR(16)+2 = 0x8242 */
int CmdQueLen;
#define SiS300Idle \
{ \
while( (MMIO_IN16(ivideo.mmio_vbase, BR(16)+2) & 0xE000) != 0xE000){}; \
while( (MMIO_IN16(ivideo.mmio_vbase, BR(16)+2) & 0xE000) != 0xE000){}; \
while( (MMIO_IN16(ivideo.mmio_vbase, BR(16)+2) & 0xE000) != 0xE000){}; \
CmdQueLen=MMIO_IN16(ivideo.mmio_vbase, 0x8240); \
}
/* TW: (do three times, because 2D engine seems quite unsure about whether or not it's idle) */
#define SiS300SetupSRCBase(base) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(0), base);\
CmdQueLen --;
#define SiS300SetupSRCPitch(pitch) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT16(ivideo.mmio_vbase, BR(1), pitch);\
CmdQueLen --;
#define SiS300SetupSRCXY(x,y) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(2), (x)<<16 | (y) );\
CmdQueLen --;
#define SiS300SetupDSTBase(base) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(4), base);\
CmdQueLen --;
#define SiS300SetupDSTXY(x,y) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(3), (x)<<16 | (y) );\
CmdQueLen --;
#define SiS300SetupDSTRect(x,y) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(5), (y)<<16 | (x) );\
CmdQueLen --;
#define SiS300SetupDSTColorDepth(bpp) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT16(ivideo.mmio_vbase, BR(1)+2, bpp);\
CmdQueLen --;
#define SiS300SetupRect(w,h) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(6), (h)<<16 | (w) );\
CmdQueLen --;
#define SiS300SetupPATFG(color) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(7), color);\
CmdQueLen --;
#define SiS300SetupPATBG(color) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(8), color);\
CmdQueLen --;
#define SiS300SetupSRCFG(color) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(9), color);\
CmdQueLen --;
#define SiS300SetupSRCBG(color) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(10), color);\
CmdQueLen --;
/* 0x8224 src colorkey high */
/* 0x8228 src colorkey low */
/* 0x821c dest colorkey high */
/* 0x8220 dest colorkey low */
#define SiS300SetupSRCTrans(color) \
if (CmdQueLen <= 1) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, 0x8224, color);\
MMIO_OUT32(ivideo.mmio_vbase, 0x8228, color);\
CmdQueLen -= 2;
#define SiS300SetupDSTTrans(color) \
if (CmdQueLen <= 1) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, 0x821C, color); \
MMIO_OUT32(ivideo.mmio_vbase, 0x8220, color); \
CmdQueLen -= 2;
#define SiS300SetupMONOPAT(p0,p1) \
if (CmdQueLen <= 1) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(11), p0);\
MMIO_OUT32(ivideo.mmio_vbase, BR(12), p1);\
CmdQueLen -= 2;
#define SiS300SetupClipLT(left,top) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(13), ((left) & 0xFFFF) | (top)<<16 );\
CmdQueLen--;
#define SiS300SetupClipRB(right,bottom) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(14), ((right) & 0xFFFF) | (bottom)<<16 );\
CmdQueLen--;
/* General */
#define SiS300SetupROP(rop) \
ivideo.CommandReg = (rop) << 8;
#define SiS300SetupCMDFlag(flags) \
ivideo.CommandReg |= (flags);
#define SiS300DoCMD \
if (CmdQueLen <= 1) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(15), ivideo.CommandReg); \
MMIO_OUT32(ivideo.mmio_vbase, BR(16), 0);\
CmdQueLen -= 2;
/* Line */
#define SiS300SetupX0Y0(x,y) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(2), (y)<<16 | (x) );\
CmdQueLen--;
#define SiS300SetupX1Y1(x,y) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(3), (y)<<16 | (x) );\
CmdQueLen--;
#define SiS300SetupLineCount(c) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT16(ivideo.mmio_vbase, BR(6), c);\
CmdQueLen--;
#define SiS300SetupStylePeriod(p) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT16(ivideo.mmio_vbase, BR(6)+2, p);\
CmdQueLen--;
#define SiS300SetupStyleLow(ls) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(11), ls);\
CmdQueLen--;
#define SiS300SetupStyleHigh(ls) \
if (CmdQueLen <= 0) SiS300Idle;\
MMIO_OUT32(ivideo.mmio_vbase, BR(12), ls);\
CmdQueLen--;
/* -------------- SiS 315 series --------------- */
/* Q_STATUS:
bit 31 = 1: All engines idle and all queues empty
bit 30 = 1: Hardware Queue (=HW CQ, 2D queue, 3D queue) empty
bit 29 = 1: 2D engine is idle
bit 28 = 1: 3D engine is idle
bit 27 = 1: HW command queue empty
bit 26 = 1: 2D queue empty
bit 25 = 1: 3D queue empty
bit 24 = 1: SW command queue empty
bits 23:16: 2D counter 3
bits 15:8: 2D counter 2
bits 7:0: 2D counter 1
Where is the command queue length (current amount of commands the queue
can accept) on the 315 series?
*/
/* TW: FIXME: CmdQueLen is... where....? */
/* We assume a length of 4 bytes per command; since 512K of
* of RAM are allocated, the number of commands is easily
* calculated (assuming that there is no 3D support yet)
* We calculate it very cautiously (128K only) and let the
* rest to the (never?)-to-come (?) 3D engine. (The 3D engine
* can use a similar technique, using the remaining 384K,
* hence a queue overflow is avoided)
* UPDATE: This technique causes a terrible system latency
* on integrated chipsets. Disable the queue handling for
* now.
*/
#define SiS310Idle \
{ \
while( (MMIO_IN16(ivideo.mmio_vbase, Q_STATUS+2) & 0x8000) != 0x8000){}; \
while( (MMIO_IN16(ivideo.mmio_vbase, Q_STATUS+2) & 0x8000) != 0x8000){}; \
CmdQueLen = 0; \
/*CmdQueLen = ((128 * 1024) / 4) - 64; */ \
}
#define SiS310SetupSRCBase(base) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, SRC_ADDR, base);\
CmdQueLen--;
#define SiS310SetupSRCPitch(pitch) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT16(ivideo.mmio_vbase, SRC_PITCH, pitch);\
CmdQueLen--;
#define SiS310SetupSRCXY(x,y) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, SRC_Y, (x)<<16 | (y) );\
CmdQueLen--;
#define SiS310SetupDSTBase(base) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, DST_ADDR, base);\
CmdQueLen--;
#define SiS310SetupDSTXY(x,y) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, DST_Y, (x)<<16 | (y) );\
CmdQueLen--;
#define SiS310SetupDSTRect(x,y) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, DST_PITCH, (y)<<16 | (x) );\
CmdQueLen--;
#define SiS310SetupDSTColorDepth(bpp) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT16(ivideo.mmio_vbase, AGP_BASE, bpp);\
CmdQueLen--;
#define SiS310SetupRect(w,h) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, RECT_WIDTH, (h)<<16 | (w) );\
CmdQueLen--;
#define SiS310SetupPATFG(color) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, PAT_FGCOLOR, color);\
CmdQueLen--;
#define SiS310SetupPATBG(color) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, PAT_BGCOLOR, color);\
CmdQueLen--;
#define SiS310SetupSRCFG(color) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, SRC_FGCOLOR, color);\
CmdQueLen--;
#define SiS310SetupSRCBG(color) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, SRC_BGCOLOR, color);\
CmdQueLen--;
#define SiS310SetupSRCTrans(color) \
if (CmdQueLen <= 1) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, TRANS_SRC_KEY_HIGH, color);\
MMIO_OUT32(ivideo.mmio_vbase, TRANS_SRC_KEY_LOW, color);\
CmdQueLen -= 2;
#define SiS310SetupDSTTrans(color) \
if (CmdQueLen <= 1) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, TRANS_DST_KEY_HIGH, color); \
MMIO_OUT32(ivideo.mmio_vbase, TRANS_DST_KEY_LOW, color); \
CmdQueLen -= 2;
#define SiS310SetupMONOPAT(p0,p1) \
if (CmdQueLen <= 1) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, MONO_MASK, p0);\
MMIO_OUT32(ivideo.mmio_vbase, MONO_MASK+4, p1);\
CmdQueLen -= 2;
#define SiS310SetupClipLT(left,top) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, LEFT_CLIP, ((left) & 0xFFFF) | (top)<<16 );\
CmdQueLen--;
#define SiS310SetupClipRB(right,bottom) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, RIGHT_CLIP, ((right) & 0xFFFF) | (bottom)<<16 );\
CmdQueLen--;
#define SiS310SetupROP(rop) \
ivideo.CommandReg = (rop) << 8;
#define SiS310SetupCMDFlag(flags) \
ivideo.CommandReg |= (flags);
#define SiS310DoCMD \
if (CmdQueLen <= 1) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, COMMAND_READY, ivideo.CommandReg); \
MMIO_OUT32(ivideo.mmio_vbase, FIRE_TRIGGER, 0); \
CmdQueLen -= 2;
#define SiS310SetupX0Y0(x,y) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, LINE_X0, (y)<<16 | (x) );\
CmdQueLen--;
#define SiS310SetupX1Y1(x,y) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, LINE_X1, (y)<<16 | (x) );\
CmdQueLen--;
#define SiS310SetupLineCount(c) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT16(ivideo.mmio_vbase, LINE_COUNT, c);\
CmdQueLen--;
#define SiS310SetupStylePeriod(p) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT16(ivideo.mmio_vbase, LINE_STYLE_PERIOD, p);\
CmdQueLen--;
#define SiS310SetupStyleLow(ls) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, LINE_STYLE_0, ls);\
CmdQueLen--;
#define SiS310SetupStyleHigh(ls) \
if (CmdQueLen <= 0) SiS310Idle;\
MMIO_OUT32(ivideo.mmio_vbase, LINE_STYLE_1, ls);\
CmdQueLen--;
int sisfb_initaccel(void);
void sisfb_syncaccel(void);
extern struct video_info ivideo;
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,5,33)
void fbcon_sis_bmove(struct display *p, int srcy, int srcx, int dsty,
int dstx, int height, int width);
void fbcon_sis_revc(struct display *p, int srcy, int srcx);
void fbcon_sis_clear8(struct vc_data *conp, struct display *p, int srcy,
int srcx, int height, int width);
void fbcon_sis_clear16(struct vc_data *conp, struct display *p, int srcy,
int srcx, int height, int width);
void fbcon_sis_clear32(struct vc_data *conp, struct display *p, int srcy,
int srcx, int height, int width);
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,34)
extern int sisfb_accel;
void fbcon_sis_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
void fbcon_sis_copyarea(struct fb_info *info, const struct fb_copyarea *area);
#endif
#endif
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