kevin/linux
1
Fork 0
Code
2bd8c47597
linux/drivers/video/via/accel.c
Roel Kluin 2bd8c47597 viafb: returns 0 two too early 
Otherwise this will already return 0 if iteration MAXLOOP-2 occurs in the
first loop.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Joseph Chan <josephchan@via.com.tw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-01 08:59:32 -07:00

284 lines
8.4 KiB
C
Raw Blame History

/*
* Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.
* Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
* 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, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; 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.
*/
#include "global.h"
void viafb_init_accel(void)
{
viaparinfo->fbmem_free -= CURSOR_SIZE;
viaparinfo->cursor_start = viaparinfo->fbmem_free;
viaparinfo->fbmem_used += CURSOR_SIZE;
/* Reverse 8*1024 memory space for cursor image */
viaparinfo->fbmem_free -= (CURSOR_SIZE + VQ_SIZE);
viaparinfo->VQ_start = viaparinfo->fbmem_free;
viaparinfo->VQ_end = viaparinfo->VQ_start + VQ_SIZE - 1;
viaparinfo->fbmem_used += (CURSOR_SIZE + VQ_SIZE); }
void viafb_init_2d_engine(void)
{
u32 dwVQStartAddr, dwVQEndAddr;
u32 dwVQLen, dwVQStartL, dwVQEndL, dwVQStartEndH;
/* init 2D engine regs to reset 2D engine */
writel(0x0, viaparinfo->io_virt + VIA_REG_GEMODE);
writel(0x0, viaparinfo->io_virt + VIA_REG_SRCPOS);
writel(0x0, viaparinfo->io_virt + VIA_REG_DSTPOS);
writel(0x0, viaparinfo->io_virt + VIA_REG_DIMENSION);
writel(0x0, viaparinfo->io_virt + VIA_REG_PATADDR);
writel(0x0, viaparinfo->io_virt + VIA_REG_FGCOLOR);
writel(0x0, viaparinfo->io_virt + VIA_REG_BGCOLOR);
writel(0x0, viaparinfo->io_virt + VIA_REG_CLIPTL);
writel(0x0, viaparinfo->io_virt + VIA_REG_CLIPBR);
writel(0x0, viaparinfo->io_virt + VIA_REG_OFFSET);
writel(0x0, viaparinfo->io_virt + VIA_REG_KEYCONTROL);
writel(0x0, viaparinfo->io_virt + VIA_REG_SRCBASE);
writel(0x0, viaparinfo->io_virt + VIA_REG_DSTBASE);
writel(0x0, viaparinfo->io_virt + VIA_REG_PITCH);
writel(0x0, viaparinfo->io_virt + VIA_REG_MONOPAT1);
/* Init AGP and VQ regs */
switch (viaparinfo->chip_info->gfx_chip_name) {
case UNICHROME_K8M890:
case UNICHROME_P4M900:
writel(0x00100000, viaparinfo->io_virt + VIA_REG_CR_TRANSET);
writel(0x680A0000, viaparinfo->io_virt + VIA_REG_CR_TRANSPACE);
writel(0x02000000, viaparinfo->io_virt + VIA_REG_CR_TRANSPACE);
break;
default:
writel(0x00100000, viaparinfo->io_virt + VIA_REG_TRANSET);
writel(0x00000000, viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x00333004, viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x60000000, viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x61000000, viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x62000000, viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x63000000, viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x64000000, viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x7D000000, viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0xFE020000, viaparinfo->io_virt + VIA_REG_TRANSET);
writel(0x00000000, viaparinfo->io_virt + VIA_REG_TRANSPACE);
break;
}
if (viaparinfo->VQ_start != 0) {
/* Enable VQ */
dwVQStartAddr = viaparinfo->VQ_start;
dwVQEndAddr = viaparinfo->VQ_end;
dwVQStartL = 0x50000000 | (dwVQStartAddr & 0xFFFFFF);
dwVQEndL = 0x51000000 | (dwVQEndAddr & 0xFFFFFF);
dwVQStartEndH = 0x52000000 |
((dwVQStartAddr & 0xFF000000) >> 24) |
((dwVQEndAddr & 0xFF000000) >> 16);
dwVQLen = 0x53000000 | (VQ_SIZE >> 3);
switch (viaparinfo->chip_info->gfx_chip_name) {
case UNICHROME_K8M890:
case UNICHROME_P4M900:
dwVQStartL |= 0x20000000;
dwVQEndL |= 0x20000000;
dwVQStartEndH |= 0x20000000;
dwVQLen |= 0x20000000;
break;
default:
break;
}
switch (viaparinfo->chip_info->gfx_chip_name) {
case UNICHROME_K8M890:
case UNICHROME_P4M900:
writel(0x00100000,
viaparinfo->io_virt + VIA_REG_CR_TRANSET);
writel(dwVQStartEndH,
viaparinfo->io_virt + VIA_REG_CR_TRANSPACE);
writel(dwVQStartL,
viaparinfo->io_virt + VIA_REG_CR_TRANSPACE);
writel(dwVQEndL,
viaparinfo->io_virt + VIA_REG_CR_TRANSPACE);
writel(dwVQLen,
viaparinfo->io_virt + VIA_REG_CR_TRANSPACE);
writel(0x74301001,
viaparinfo->io_virt + VIA_REG_CR_TRANSPACE);
writel(0x00000000,
viaparinfo->io_virt + VIA_REG_CR_TRANSPACE);
break;
default:
writel(0x00FE0000,
viaparinfo->io_virt + VIA_REG_TRANSET);
writel(0x080003FE,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x0A00027C,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x0B000260,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x0C000274,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x0D000264,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x0E000000,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x0F000020,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x1000027E,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x110002FE,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x200F0060,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x00000006,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x40008C0F,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x44000000,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x45080C04,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x46800408,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(dwVQStartEndH,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(dwVQStartL,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(dwVQEndL,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(dwVQLen,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
break;
}
} else {
/* Disable VQ */
switch (viaparinfo->chip_info->gfx_chip_name) {
case UNICHROME_K8M890:
case UNICHROME_P4M900:
writel(0x00100000,
viaparinfo->io_virt + VIA_REG_CR_TRANSET);
writel(0x74301000,
viaparinfo->io_virt + VIA_REG_CR_TRANSPACE);
break;
default:
writel(0x00FE0000,
viaparinfo->io_virt + VIA_REG_TRANSET);
writel(0x00000004,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x40008C0F,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x44000000,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x45080C04,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
writel(0x46800408,
viaparinfo->io_virt + VIA_REG_TRANSPACE);
break;
}
}
viafb_set_2d_color_depth(viaparinfo->bpp);
writel(0x0, viaparinfo->io_virt + VIA_REG_SRCBASE);
writel(0x0, viaparinfo->io_virt + VIA_REG_DSTBASE);
writel(VIA_PITCH_ENABLE |
(((viaparinfo->hres *
viaparinfo->bpp >> 3) >> 3) | (((viaparinfo->hres *
viaparinfo->
bpp >> 3) >> 3) << 16)),
viaparinfo->io_virt + VIA_REG_PITCH);
}
void viafb_set_2d_color_depth(int bpp)
{
u32 dwGEMode;
dwGEMode = readl(viaparinfo->io_virt + 0x04) & 0xFFFFFCFF;
switch (bpp) {
case 16:
dwGEMode |= VIA_GEM_16bpp;
break;
case 32:
dwGEMode |= VIA_GEM_32bpp;
break;
default:
dwGEMode |= VIA_GEM_8bpp;
break;
}
/* Set BPP and Pitch */
writel(dwGEMode, viaparinfo->io_virt + VIA_REG_GEMODE);
}
void viafb_hw_cursor_init(void)
{
/* Set Cursor Image Base Address */
writel(viaparinfo->cursor_start,
viaparinfo->io_virt + VIA_REG_CURSOR_MODE);
writel(0x0, viaparinfo->io_virt + VIA_REG_CURSOR_POS);
writel(0x0, viaparinfo->io_virt + VIA_REG_CURSOR_ORG);
writel(0x0, viaparinfo->io_virt + VIA_REG_CURSOR_BG);
writel(0x0, viaparinfo->io_virt + VIA_REG_CURSOR_FG);
}
void viafb_show_hw_cursor(struct fb_info *info, int Status)
{
u32 temp;
u32 iga_path = ((struct viafb_par *)(info->par))->iga_path;
temp = readl(viaparinfo->io_virt + VIA_REG_CURSOR_MODE);
switch (Status) {
case HW_Cursor_ON:
temp |= 0x1;
break;
case HW_Cursor_OFF:
temp &= 0xFFFFFFFE;
break;
}
switch (iga_path) {
case IGA2:
temp |= 0x80000000;
break;
case IGA1:
default:
temp &= 0x7FFFFFFF;
}
writel(temp, viaparinfo->io_virt + VIA_REG_CURSOR_MODE);
}
int viafb_wait_engine_idle(void)
{
int loop = 0;
while (!(readl(viaparinfo->io_virt + VIA_REG_STATUS) &
VIA_VR_QUEUE_BUSY) && (loop < MAXLOOP)) {
loop++;
cpu_relax();
}
while ((readl(viaparinfo->io_virt + VIA_REG_STATUS) &
(VIA_CMD_RGTR_BUSY | VIA_2D_ENG_BUSY | VIA_3D_ENG_BUSY)) &&
(loop < MAXLOOP)) {
loop++;
cpu_relax();
}
return loop >= MAXLOOP;
}
View Git Blame Copy Permalink