| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * SiS 300/540/630[S]/730[S], |
| * SiS 315[E|PRO]/550/[M]650/651/[M]661[F|M]X/740/[M]741[GX]/330/[M]760[GX], |
| * XGI V3XT/V5/V8, Z7 |
| * frame buffer driver for Linux kernels >= 2.4.14 and >=2.6.3 |
| * |
| * 2D acceleration part |
| * |
| * Based on the XFree86/X.org driver which is |
| * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria |
| * |
| * Author: Thomas Winischhofer <thomas@winischhofer.net> |
| * (see http://www.winischhofer.net/ |
| * for more information and updates) |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/fb.h> |
| #include <linux/ioport.h> |
| #include <linux/types.h> |
| #include <asm/io.h> |
| |
| #include "sis.h" |
| #include "sis_accel.h" |
| |
| static const u8 sisALUConv[] = |
| { |
| 0x00, /* dest = 0; 0, GXclear, 0 */ |
| 0x88, /* dest &= src; DSa, GXand, 0x1 */ |
| 0x44, /* dest = src & ~dest; SDna, GXandReverse, 0x2 */ |
| 0xCC, /* dest = src; S, GXcopy, 0x3 */ |
| 0x22, /* dest &= ~src; DSna, GXandInverted, 0x4 */ |
| 0xAA, /* dest = dest; D, GXnoop, 0x5 */ |
| 0x66, /* dest = ^src; DSx, GXxor, 0x6 */ |
| 0xEE, /* dest |= src; DSo, GXor, 0x7 */ |
| 0x11, /* dest = ~src & ~dest; DSon, GXnor, 0x8 */ |
| 0x99, /* dest ^= ~src ; DSxn, GXequiv, 0x9 */ |
| 0x55, /* dest = ~dest; Dn, GXInvert, 0xA */ |
| 0xDD, /* dest = src|~dest ; SDno, GXorReverse, 0xB */ |
| 0x33, /* dest = ~src; Sn, GXcopyInverted, 0xC */ |
| 0xBB, /* dest |= ~src; DSno, GXorInverted, 0xD */ |
| 0x77, /* dest = ~src|~dest; DSan, GXnand, 0xE */ |
| 0xFF, /* dest = 0xFF; 1, GXset, 0xF */ |
| }; |
| /* same ROP but with Pattern as Source */ |
| static const u8 sisPatALUConv[] = |
| { |
| 0x00, /* dest = 0; 0, GXclear, 0 */ |
| 0xA0, /* dest &= src; DPa, GXand, 0x1 */ |
| 0x50, /* dest = src & ~dest; PDna, GXandReverse, 0x2 */ |
| 0xF0, /* dest = src; P, GXcopy, 0x3 */ |
| 0x0A, /* dest &= ~src; DPna, GXandInverted, 0x4 */ |
| 0xAA, /* dest = dest; D, GXnoop, 0x5 */ |
| 0x5A, /* dest = ^src; DPx, GXxor, 0x6 */ |
| 0xFA, /* dest |= src; DPo, GXor, 0x7 */ |
| 0x05, /* dest = ~src & ~dest; DPon, GXnor, 0x8 */ |
| 0xA5, /* dest ^= ~src ; DPxn, GXequiv, 0x9 */ |
| 0x55, /* dest = ~dest; Dn, GXInvert, 0xA */ |
| 0xF5, /* dest = src|~dest ; PDno, GXorReverse, 0xB */ |
| 0x0F, /* dest = ~src; Pn, GXcopyInverted, 0xC */ |
| 0xAF, /* dest |= ~src; DPno, GXorInverted, 0xD */ |
| 0x5F, /* dest = ~src|~dest; DPan, GXnand, 0xE */ |
| 0xFF, /* dest = 0xFF; 1, GXset, 0xF */ |
| }; |
| |
| static const int myrops[] = { |
| 3, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 |
| }; |
| |
| /* 300 series ----------------------------------------------------- */ |
| #ifdef CONFIG_FB_SIS_300 |
| static void |
| SiS300Sync(struct sis_video_info *ivideo) |
| { |
| SiS300Idle |
| } |
| |
| static void |
| SiS300SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int xdir, int ydir, |
| int rop, int trans_color) |
| { |
| SiS300SetupDSTColorDepth(ivideo->DstColor); |
| SiS300SetupSRCPitch(ivideo->video_linelength) |
| SiS300SetupDSTRect(ivideo->video_linelength, 0xffff) |
| |
| if(trans_color != -1) { |
| SiS300SetupROP(0x0A) |
| SiS300SetupSRCTrans(trans_color) |
| SiS300SetupCMDFlag(TRANSPARENT_BITBLT) |
| } else { |
| SiS300SetupROP(sisALUConv[rop]) |
| } |
| if(xdir > 0) { |
| SiS300SetupCMDFlag(X_INC) |
| } |
| if(ydir > 0) { |
| SiS300SetupCMDFlag(Y_INC) |
| } |
| } |
| |
| static void |
| SiS300SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x, |
| int src_y, int dst_x, int dst_y, int width, int height) |
| { |
| u32 srcbase = 0, dstbase = 0; |
| |
| if(src_y >= 2048) { |
| srcbase = ivideo->video_linelength * src_y; |
| src_y = 0; |
| } |
| if(dst_y >= 2048) { |
| dstbase = ivideo->video_linelength * dst_y; |
| dst_y = 0; |
| } |
| |
| SiS300SetupSRCBase(srcbase); |
| SiS300SetupDSTBase(dstbase); |
| |
| if(!(ivideo->CommandReg & X_INC)) { |
| src_x += width-1; |
| dst_x += width-1; |
| } |
| if(!(ivideo->CommandReg & Y_INC)) { |
| src_y += height-1; |
| dst_y += height-1; |
| } |
| SiS300SetupRect(width, height) |
| SiS300SetupSRCXY(src_x, src_y) |
| SiS300SetupDSTXY(dst_x, dst_y) |
| SiS300DoCMD |
| } |
| |
| static void |
| SiS300SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop) |
| { |
| SiS300SetupPATFG(color) |
| SiS300SetupDSTRect(ivideo->video_linelength, 0xffff) |
| SiS300SetupDSTColorDepth(ivideo->DstColor); |
| SiS300SetupROP(sisPatALUConv[rop]) |
| SiS300SetupCMDFlag(PATFG) |
| } |
| |
| static void |
| SiS300SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h) |
| { |
| u32 dstbase = 0; |
| |
| if(y >= 2048) { |
| dstbase = ivideo->video_linelength * y; |
| y = 0; |
| } |
| SiS300SetupDSTBase(dstbase) |
| SiS300SetupDSTXY(x,y) |
| SiS300SetupRect(w,h) |
| SiS300SetupCMDFlag(X_INC | Y_INC | BITBLT) |
| SiS300DoCMD |
| } |
| #endif |
| |
| /* 315/330/340 series ---------------------------------------------- */ |
| |
| #ifdef CONFIG_FB_SIS_315 |
| static void |
| SiS310Sync(struct sis_video_info *ivideo) |
| { |
| SiS310Idle |
| } |
| |
| static void |
| SiS310SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int rop, int trans_color) |
| { |
| SiS310SetupDSTColorDepth(ivideo->DstColor); |
| SiS310SetupSRCPitch(ivideo->video_linelength) |
| SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff) |
| if(trans_color != -1) { |
| SiS310SetupROP(0x0A) |
| SiS310SetupSRCTrans(trans_color) |
| SiS310SetupCMDFlag(TRANSPARENT_BITBLT) |
| } else { |
| SiS310SetupROP(sisALUConv[rop]) |
| /* Set command - not needed, both 0 */ |
| /* SiSSetupCMDFlag(BITBLT | SRCVIDEO) */ |
| } |
| SiS310SetupCMDFlag(ivideo->SiS310_AccelDepth) |
| /* The chip is smart enough to know the direction */ |
| } |
| |
| static void |
| SiS310SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x, int src_y, |
| int dst_x, int dst_y, int width, int height) |
| { |
| u32 srcbase = 0, dstbase = 0; |
| int mymin = min(src_y, dst_y); |
| int mymax = max(src_y, dst_y); |
| |
| /* Although the chip knows the direction to use |
| * if the source and destination areas overlap, |
| * that logic fails if we fiddle with the bitmap |
| * addresses. Therefore, we check if the source |
| * and destination blitting areas overlap and |
| * adapt the bitmap addresses synchronously |
| * if the coordinates exceed the valid range. |
| * The the areas do not overlap, we do our |
| * normal check. |
| */ |
| if((mymax - mymin) < height) { |
| if((src_y >= 2048) || (dst_y >= 2048)) { |
| srcbase = ivideo->video_linelength * mymin; |
| dstbase = ivideo->video_linelength * mymin; |
| src_y -= mymin; |
| dst_y -= mymin; |
| } |
| } else { |
| if(src_y >= 2048) { |
| srcbase = ivideo->video_linelength * src_y; |
| src_y = 0; |
| } |
| if(dst_y >= 2048) { |
| dstbase = ivideo->video_linelength * dst_y; |
| dst_y = 0; |
| } |
| } |
| |
| srcbase += ivideo->video_offset; |
| dstbase += ivideo->video_offset; |
| |
| SiS310SetupSRCBase(srcbase); |
| SiS310SetupDSTBase(dstbase); |
| SiS310SetupRect(width, height) |
| SiS310SetupSRCXY(src_x, src_y) |
| SiS310SetupDSTXY(dst_x, dst_y) |
| SiS310DoCMD |
| } |
| |
| static void |
| SiS310SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop) |
| { |
| SiS310SetupPATFG(color) |
| SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff) |
| SiS310SetupDSTColorDepth(ivideo->DstColor); |
| SiS310SetupROP(sisPatALUConv[rop]) |
| SiS310SetupCMDFlag(PATFG | ivideo->SiS310_AccelDepth) |
| } |
| |
| static void |
| SiS310SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h) |
| { |
| u32 dstbase = 0; |
| |
| if(y >= 2048) { |
| dstbase = ivideo->video_linelength * y; |
| y = 0; |
| } |
| dstbase += ivideo->video_offset; |
| SiS310SetupDSTBase(dstbase) |
| SiS310SetupDSTXY(x,y) |
| SiS310SetupRect(w,h) |
| SiS310SetupCMDFlag(BITBLT) |
| SiS310DoCMD |
| } |
| #endif |
| |
| /* --------------------------------------------------------------------- */ |
| |
| /* The exported routines */ |
| |
| int sisfb_initaccel(struct sis_video_info *ivideo) |
| { |
| #ifdef SISFB_USE_SPINLOCKS |
| spin_lock_init(&ivideo->lockaccel); |
| #endif |
| return 0; |
| } |
| |
| void sisfb_syncaccel(struct sis_video_info *ivideo) |
| { |
| if(ivideo->sisvga_engine == SIS_300_VGA) { |
| #ifdef CONFIG_FB_SIS_300 |
| SiS300Sync(ivideo); |
| #endif |
| } else { |
| #ifdef CONFIG_FB_SIS_315 |
| SiS310Sync(ivideo); |
| #endif |
| } |
| } |
| |
| int fbcon_sis_sync(struct fb_info *info) |
| { |
| struct sis_video_info *ivideo = (struct sis_video_info *)info->par; |
| CRITFLAGS |
| |
| if((!ivideo->accel) || (!ivideo->engineok)) |
| return 0; |
| |
| CRITBEGIN |
| sisfb_syncaccel(ivideo); |
| CRITEND |
| |
| return 0; |
| } |
| |
| void fbcon_sis_fillrect(struct fb_info *info, const struct fb_fillrect *rect) |
| { |
| struct sis_video_info *ivideo = (struct sis_video_info *)info->par; |
| u32 col = 0; |
| u32 vxres = info->var.xres_virtual; |
| u32 vyres = info->var.yres_virtual; |
| int width, height; |
| CRITFLAGS |
| |
| if(info->state != FBINFO_STATE_RUNNING) |
| return; |
| |
| if((!ivideo->accel) || (!ivideo->engineok)) { |
| cfb_fillrect(info, rect); |
| return; |
| } |
| |
| if(!rect->width || !rect->height || rect->dx >= vxres || rect->dy >= vyres) |
| return; |
| |
| /* Clipping */ |
| width = ((rect->dx + rect->width) > vxres) ? (vxres - rect->dx) : rect->width; |
| height = ((rect->dy + rect->height) > vyres) ? (vyres - rect->dy) : rect->height; |
| |
| switch(info->var.bits_per_pixel) { |
| case 8: col = rect->color; |
| break; |
| case 16: |
| case 32: col = ((u32 *)(info->pseudo_palette))[rect->color]; |
| break; |
| } |
| |
| if(ivideo->sisvga_engine == SIS_300_VGA) { |
| #ifdef CONFIG_FB_SIS_300 |
| CRITBEGIN |
| SiS300SetupForSolidFill(ivideo, col, myrops[rect->rop]); |
| SiS300SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height); |
| CRITEND |
| #endif |
| } else { |
| #ifdef CONFIG_FB_SIS_315 |
| CRITBEGIN |
| SiS310SetupForSolidFill(ivideo, col, myrops[rect->rop]); |
| SiS310SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height); |
| CRITEND |
| #endif |
| } |
| |
| sisfb_syncaccel(ivideo); |
| } |
| |
| void fbcon_sis_copyarea(struct fb_info *info, const struct fb_copyarea *area) |
| { |
| struct sis_video_info *ivideo = (struct sis_video_info *)info->par; |
| u32 vxres = info->var.xres_virtual; |
| u32 vyres = info->var.yres_virtual; |
| int width = area->width; |
| int height = area->height; |
| CRITFLAGS |
| |
| if(info->state != FBINFO_STATE_RUNNING) |
| return; |
| |
| if((!ivideo->accel) || (!ivideo->engineok)) { |
| cfb_copyarea(info, area); |
| return; |
| } |
| |
| if(!width || !height || |
| area->sx >= vxres || area->sy >= vyres || |
| area->dx >= vxres || area->dy >= vyres) |
| return; |
| |
| /* Clipping */ |
| if((area->sx + width) > vxres) width = vxres - area->sx; |
| if((area->dx + width) > vxres) width = vxres - area->dx; |
| if((area->sy + height) > vyres) height = vyres - area->sy; |
| if((area->dy + height) > vyres) height = vyres - area->dy; |
| |
| if(ivideo->sisvga_engine == SIS_300_VGA) { |
| #ifdef CONFIG_FB_SIS_300 |
| int xdir, ydir; |
| |
| if(area->sx < area->dx) xdir = 0; |
| else xdir = 1; |
| if(area->sy < area->dy) ydir = 0; |
| else ydir = 1; |
| |
| CRITBEGIN |
| SiS300SetupForScreenToScreenCopy(ivideo, xdir, ydir, 3, -1); |
| SiS300SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy, |
| area->dx, area->dy, width, height); |
| CRITEND |
| #endif |
| } else { |
| #ifdef CONFIG_FB_SIS_315 |
| CRITBEGIN |
| SiS310SetupForScreenToScreenCopy(ivideo, 3, -1); |
| SiS310SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy, |
| area->dx, area->dy, width, height); |
| CRITEND |
| #endif |
| } |
| |
| sisfb_syncaccel(ivideo); |
| } |