diff options
Diffstat (limited to 'drivers/video/fbdev/sis/sis_accel.c')
| -rw-r--r-- | drivers/video/fbdev/sis/sis_accel.c | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/drivers/video/fbdev/sis/sis_accel.c b/drivers/video/fbdev/sis/sis_accel.c new file mode 100644 index 000000000..1914ab5a5 --- /dev/null +++ b/drivers/video/fbdev/sis/sis_accel.c @@ -0,0 +1,410 @@ +// 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); +} |