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linux/drivers/video/via/accel.c
Erik-Jan Post 97922b5462 viafb: fix acceleration for some chips 
Fix a regression in hardware acceleration which made the accelerated
framebuffer unusable on some chips.  These need extra initialization and
an extra flag which is no longer needed/available on current chips.

Signed-off-by: Erik-Jan Post <ej.lfs@xs4all.nl>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Scott Fang <ScottFang@viatech.com.cn>
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>
2010-01-16 12:15:37 -08:00

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/*
* 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"
static int hw_bitblt_1(void __iomem *engine, u8 op, u32 width, u32 height,
u8 dst_bpp, u32 dst_addr, u32 dst_pitch, u32 dst_x, u32 dst_y,
u32 *src_mem, u32 src_addr, u32 src_pitch, u32 src_x, u32 src_y,
u32 fg_color, u32 bg_color, u8 fill_rop)
{
u32 ge_cmd = 0, tmp, i;
if (!op || op > 3) {
printk(KERN_WARNING "hw_bitblt_1: Invalid operation: %d\n", op);
return -EINVAL;
}
if (op != VIA_BITBLT_FILL && !src_mem && src_addr == dst_addr) {
if (src_x < dst_x) {
ge_cmd |= 0x00008000;
src_x += width - 1;
dst_x += width - 1;
}
if (src_y < dst_y) {
ge_cmd |= 0x00004000;
src_y += height - 1;
dst_y += height - 1;
}
}
if (op == VIA_BITBLT_FILL) {
switch (fill_rop) {
case 0x00: /* blackness */
case 0x5A: /* pattern inversion */
case 0xF0: /* pattern copy */
case 0xFF: /* whiteness */
break;
default:
printk(KERN_WARNING "hw_bitblt_1: Invalid fill rop: "
"%u\n", fill_rop);
return -EINVAL;
}
}
switch (dst_bpp) {
case 8:
tmp = 0x00000000;
break;
case 16:
tmp = 0x00000100;
break;
case 32:
tmp = 0x00000300;
break;
default:
printk(KERN_WARNING "hw_bitblt_1: Unsupported bpp %d\n",
dst_bpp);
return -EINVAL;
}
writel(tmp, engine + 0x04);
if (op != VIA_BITBLT_FILL) {
if (src_x & (op == VIA_BITBLT_MONO ? 0xFFFF8000 : 0xFFFFF000)
|| src_y & 0xFFFFF000) {
printk(KERN_WARNING "hw_bitblt_1: Unsupported source "
"x/y %d %d\n", src_x, src_y);
return -EINVAL;
}
tmp = src_x | (src_y << 16);
writel(tmp, engine + 0x08);
}
if (dst_x & 0xFFFFF000 || dst_y & 0xFFFFF000) {
printk(KERN_WARNING "hw_bitblt_1: Unsupported destination x/y "
"%d %d\n", dst_x, dst_y);
return -EINVAL;
}
tmp = dst_x | (dst_y << 16);
writel(tmp, engine + 0x0C);
if ((width - 1) & 0xFFFFF000 || (height - 1) & 0xFFFFF000) {
printk(KERN_WARNING "hw_bitblt_1: Unsupported width/height "
"%d %d\n", width, height);
return -EINVAL;
}
tmp = (width - 1) | ((height - 1) << 16);
writel(tmp, engine + 0x10);
if (op != VIA_BITBLT_COLOR)
writel(fg_color, engine + 0x18);
if (op == VIA_BITBLT_MONO)
writel(bg_color, engine + 0x1C);
if (op != VIA_BITBLT_FILL) {
tmp = src_mem ? 0 : src_addr;
if (dst_addr & 0xE0000007) {
printk(KERN_WARNING "hw_bitblt_1: Unsupported source "
"address %X\n", tmp);
return -EINVAL;
}
tmp >>= 3;
writel(tmp, engine + 0x30);
}
if (dst_addr & 0xE0000007) {
printk(KERN_WARNING "hw_bitblt_1: Unsupported destination "
"address %X\n", dst_addr);
return -EINVAL;
}
tmp = dst_addr >> 3;
writel(tmp, engine + 0x34);
if (op == VIA_BITBLT_FILL)
tmp = 0;
else
tmp = src_pitch;
if (tmp & 0xFFFFC007 || dst_pitch & 0xFFFFC007) {
printk(KERN_WARNING "hw_bitblt_1: Unsupported pitch %X %X\n",
tmp, dst_pitch);
return -EINVAL;
}
tmp = VIA_PITCH_ENABLE | (tmp >> 3) | (dst_pitch << (16 - 3));
writel(tmp, engine + 0x38);
if (op == VIA_BITBLT_FILL)
ge_cmd |= fill_rop << 24 | 0x00002000 | 0x00000001;
else {
ge_cmd |= 0xCC000000; /* ROP=SRCCOPY */
if (src_mem)
ge_cmd |= 0x00000040;
if (op == VIA_BITBLT_MONO)
ge_cmd |= 0x00000002 | 0x00000100 | 0x00020000;
else
ge_cmd |= 0x00000001;
}
writel(ge_cmd, engine);
if (op == VIA_BITBLT_FILL || !src_mem)
return 0;
tmp = (width * height * (op == VIA_BITBLT_MONO ? 1 : (dst_bpp >> 3)) +
3) >> 2;
for (i = 0; i < tmp; i++)
writel(src_mem[i], engine + VIA_MMIO_BLTBASE);
return 0;
}
static int hw_bitblt_2(void __iomem *engine, u8 op, u32 width, u32 height,
u8 dst_bpp, u32 dst_addr, u32 dst_pitch, u32 dst_x, u32 dst_y,
u32 *src_mem, u32 src_addr, u32 src_pitch, u32 src_x, u32 src_y,
u32 fg_color, u32 bg_color, u8 fill_rop)
{
u32 ge_cmd = 0, tmp, i;
if (!op || op > 3) {
printk(KERN_WARNING "hw_bitblt_2: Invalid operation: %d\n", op);
return -EINVAL;
}
if (op != VIA_BITBLT_FILL && !src_mem && src_addr == dst_addr) {
if (src_x < dst_x) {
ge_cmd |= 0x00008000;
src_x += width - 1;
dst_x += width - 1;
}
if (src_y < dst_y) {
ge_cmd |= 0x00004000;
src_y += height - 1;
dst_y += height - 1;
}
}
if (op == VIA_BITBLT_FILL) {
switch (fill_rop) {
case 0x00: /* blackness */
case 0x5A: /* pattern inversion */
case 0xF0: /* pattern copy */
case 0xFF: /* whiteness */
break;
default:
printk(KERN_WARNING "hw_bitblt_2: Invalid fill rop: "
"%u\n", fill_rop);
return -EINVAL;
}
}
switch (dst_bpp) {
case 8:
tmp = 0x00000000;
break;
case 16:
tmp = 0x00000100;
break;
case 32:
tmp = 0x00000300;
break;
default:
printk(KERN_WARNING "hw_bitblt_2: Unsupported bpp %d\n",
dst_bpp);
return -EINVAL;
}
writel(tmp, engine + 0x04);
if (op == VIA_BITBLT_FILL)
tmp = 0;
else
tmp = src_pitch;
if (tmp & 0xFFFFC007 || dst_pitch & 0xFFFFC007) {
printk(KERN_WARNING "hw_bitblt_2: Unsupported pitch %X %X\n",
tmp, dst_pitch);
return -EINVAL;
}
tmp = (tmp >> 3) | (dst_pitch << (16 - 3));
writel(tmp, engine + 0x08);
if ((width - 1) & 0xFFFFF000 || (height - 1) & 0xFFFFF000) {
printk(KERN_WARNING "hw_bitblt_2: Unsupported width/height "
"%d %d\n", width, height);
return -EINVAL;
}
tmp = (width - 1) | ((height - 1) << 16);
writel(tmp, engine + 0x0C);
if (dst_x & 0xFFFFF000 || dst_y & 0xFFFFF000) {
printk(KERN_WARNING "hw_bitblt_2: Unsupported destination x/y "
"%d %d\n", dst_x, dst_y);
return -EINVAL;
}
tmp = dst_x | (dst_y << 16);
writel(tmp, engine + 0x10);
if (dst_addr & 0xE0000007) {
printk(KERN_WARNING "hw_bitblt_2: Unsupported destination "
"address %X\n", dst_addr);
return -EINVAL;
}
tmp = dst_addr >> 3;
writel(tmp, engine + 0x14);
if (op != VIA_BITBLT_FILL) {
if (src_x & (op == VIA_BITBLT_MONO ? 0xFFFF8000 : 0xFFFFF000)
|| src_y & 0xFFFFF000) {
printk(KERN_WARNING "hw_bitblt_2: Unsupported source "
"x/y %d %d\n", src_x, src_y);
return -EINVAL;
}
tmp = src_x | (src_y << 16);
writel(tmp, engine + 0x18);
tmp = src_mem ? 0 : src_addr;
if (dst_addr & 0xE0000007) {
printk(KERN_WARNING "hw_bitblt_2: Unsupported source "
"address %X\n", tmp);
return -EINVAL;
}
tmp >>= 3;
writel(tmp, engine + 0x1C);
}
if (op != VIA_BITBLT_COLOR)
writel(fg_color, engine + 0x4C);
if (op == VIA_BITBLT_MONO)
writel(bg_color, engine + 0x50);
if (op == VIA_BITBLT_FILL)
ge_cmd |= fill_rop << 24 | 0x00002000 | 0x00000001;
else {
ge_cmd |= 0xCC000000; /* ROP=SRCCOPY */
if (src_mem)
ge_cmd |= 0x00000040;
if (op == VIA_BITBLT_MONO)
ge_cmd |= 0x00000002 | 0x00000100 | 0x00020000;
else
ge_cmd |= 0x00000001;
}
writel(ge_cmd, engine);
if (op == VIA_BITBLT_FILL || !src_mem)
return 0;
tmp = (width * height * (op == VIA_BITBLT_MONO ? 1 : (dst_bpp >> 3)) +
3) >> 2;
for (i = 0; i < tmp; i++)
writel(src_mem[i], engine + VIA_MMIO_BLTBASE);
return 0;
}
int viafb_init_engine(struct fb_info *info)
{
struct viafb_par *viapar = info->par;
void __iomem *engine;
u32 vq_start_addr, vq_end_addr, vq_start_low, vq_end_low, vq_high,
vq_len, chip_name = viapar->shared->chip_info.gfx_chip_name;
engine = ioremap_nocache(info->fix.mmio_start, info->fix.mmio_len);
viapar->shared->engine_mmio = engine;
if (!engine) {
printk(KERN_WARNING "viafb_init_accel: ioremap failed, "
"hardware acceleration disabled\n");
return -ENOMEM;
}
switch (chip_name) {
case UNICHROME_CLE266:
case UNICHROME_K400:
case UNICHROME_K800:
case UNICHROME_PM800:
case UNICHROME_CN700:
case UNICHROME_CX700:
case UNICHROME_CN750:
case UNICHROME_K8M890:
case UNICHROME_P4M890:
case UNICHROME_P4M900:
viapar->shared->hw_bitblt = hw_bitblt_1;
break;
case UNICHROME_VX800:
case UNICHROME_VX855:
viapar->shared->hw_bitblt = hw_bitblt_2;
break;
default:
viapar->shared->hw_bitblt = NULL;
}
viapar->fbmem_free -= CURSOR_SIZE;
viapar->shared->cursor_vram_addr = viapar->fbmem_free;
viapar->fbmem_used += CURSOR_SIZE;
viapar->fbmem_free -= VQ_SIZE;
viapar->shared->vq_vram_addr = viapar->fbmem_free;
viapar->fbmem_used += VQ_SIZE;
/* Init 2D engine reg to reset 2D engine */
writel(0x0, engine + VIA_REG_KEYCONTROL);
/* Init AGP and VQ regs */
switch (chip_name) {
case UNICHROME_K8M890:
case UNICHROME_P4M900:
writel(0x00100000, engine + VIA_REG_CR_TRANSET);
writel(0x680A0000, engine + VIA_REG_CR_TRANSPACE);
writel(0x02000000, engine + VIA_REG_CR_TRANSPACE);
break;
default:
writel(0x00100000, engine + VIA_REG_TRANSET);
writel(0x00000000, engine + VIA_REG_TRANSPACE);
writel(0x00333004, engine + VIA_REG_TRANSPACE);
writel(0x60000000, engine + VIA_REG_TRANSPACE);
writel(0x61000000, engine + VIA_REG_TRANSPACE);
writel(0x62000000, engine + VIA_REG_TRANSPACE);
writel(0x63000000, engine + VIA_REG_TRANSPACE);
writel(0x64000000, engine + VIA_REG_TRANSPACE);
writel(0x7D000000, engine + VIA_REG_TRANSPACE);
writel(0xFE020000, engine + VIA_REG_TRANSET);
writel(0x00000000, engine + VIA_REG_TRANSPACE);
break;
}
/* Enable VQ */
vq_start_addr = viapar->shared->vq_vram_addr;
vq_end_addr = viapar->shared->vq_vram_addr + VQ_SIZE - 1;
vq_start_low = 0x50000000 | (vq_start_addr & 0xFFFFFF);
vq_end_low = 0x51000000 | (vq_end_addr & 0xFFFFFF);
vq_high = 0x52000000 | ((vq_start_addr & 0xFF000000) >> 24) |
((vq_end_addr & 0xFF000000) >> 16);
vq_len = 0x53000000 | (VQ_SIZE >> 3);
switch (chip_name) {
case UNICHROME_K8M890:
case UNICHROME_P4M900:
vq_start_low |= 0x20000000;
vq_end_low |= 0x20000000;
vq_high |= 0x20000000;
vq_len |= 0x20000000;
writel(0x00100000, engine + VIA_REG_CR_TRANSET);
writel(vq_high, engine + VIA_REG_CR_TRANSPACE);
writel(vq_start_low, engine + VIA_REG_CR_TRANSPACE);
writel(vq_end_low, engine + VIA_REG_CR_TRANSPACE);
writel(vq_len, engine + VIA_REG_CR_TRANSPACE);
writel(0x74301001, engine + VIA_REG_CR_TRANSPACE);
writel(0x00000000, engine + VIA_REG_CR_TRANSPACE);
break;
default:
writel(0x00FE0000, engine + VIA_REG_TRANSET);
writel(0x080003FE, engine + VIA_REG_TRANSPACE);
writel(0x0A00027C, engine + VIA_REG_TRANSPACE);
writel(0x0B000260, engine + VIA_REG_TRANSPACE);
writel(0x0C000274, engine + VIA_REG_TRANSPACE);
writel(0x0D000264, engine + VIA_REG_TRANSPACE);
writel(0x0E000000, engine + VIA_REG_TRANSPACE);
writel(0x0F000020, engine + VIA_REG_TRANSPACE);
writel(0x1000027E, engine + VIA_REG_TRANSPACE);
writel(0x110002FE, engine + VIA_REG_TRANSPACE);
writel(0x200F0060, engine + VIA_REG_TRANSPACE);
writel(0x00000006, engine + VIA_REG_TRANSPACE);
writel(0x40008C0F, engine + VIA_REG_TRANSPACE);
writel(0x44000000, engine + VIA_REG_TRANSPACE);
writel(0x45080C04, engine + VIA_REG_TRANSPACE);
writel(0x46800408, engine + VIA_REG_TRANSPACE);
writel(vq_high, engine + VIA_REG_TRANSPACE);
writel(vq_start_low, engine + VIA_REG_TRANSPACE);
writel(vq_end_low, engine + VIA_REG_TRANSPACE);
writel(vq_len, engine + VIA_REG_TRANSPACE);
break;
}
/* Set Cursor Image Base Address */
writel(viapar->shared->cursor_vram_addr, engine + VIA_REG_CURSOR_MODE);
writel(0x0, engine + VIA_REG_CURSOR_POS);
writel(0x0, engine + VIA_REG_CURSOR_ORG);
writel(0x0, engine + VIA_REG_CURSOR_BG);
writel(0x0, engine + VIA_REG_CURSOR_FG);
return 0;
}
void viafb_show_hw_cursor(struct fb_info *info, int Status)
{
struct viafb_par *viapar = info->par;
u32 temp, iga_path = viapar->iga_path;
temp = readl(viapar->shared->engine_mmio + 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, viapar->shared->engine_mmio + VIA_REG_CURSOR_MODE);
}
void viafb_wait_engine_idle(struct fb_info *info)
{
struct viafb_par *viapar = info->par;
int loop = 0;
while (!(readl(viapar->shared->engine_mmio + VIA_REG_STATUS) &
VIA_VR_QUEUE_BUSY) && (loop < MAXLOOP)) {
loop++;
cpu_relax();
}
while ((readl(viapar->shared->engine_mmio + VIA_REG_STATUS) &
(VIA_CMD_RGTR_BUSY | VIA_2D_ENG_BUSY | VIA_3D_ENG_BUSY)) &&
(loop < MAXLOOP)) {
loop++;
cpu_relax();
}
if (loop >= MAXLOOP)
printk(KERN_ERR "viafb_wait_engine_idle: not syncing\n");
}
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