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linux/drivers/video/fbdev/via/accel.c
Thomas Gleixner 64b70da038 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 50 
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 43 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520170858.826676366@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:27:13 +02:00

534 lines
14 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.
* Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
*/
#include <linux/via-core.h>
#include "global.h"
/*
* Figure out an appropriate bytes-per-pixel setting.
*/
static int viafb_set_bpp(void __iomem *engine, u8 bpp)
{
u32 gemode;
/* Preserve the reserved bits */
/* Lowest 2 bits to zero gives us no rotation */
gemode = readl(engine + VIA_REG_GEMODE) & 0xfffffcfc;
switch (bpp) {
case 8:
gemode |= VIA_GEM_8bpp;
break;
case 16:
gemode |= VIA_GEM_16bpp;
break;
case 32:
gemode |= VIA_GEM_32bpp;
break;
default:
printk(KERN_WARNING "viafb_set_bpp: Unsupported bpp %d\n", bpp);
return -EINVAL;
}
writel(gemode, engine + VIA_REG_GEMODE);
return 0;
}
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;
int ret;
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;
}
}
ret = viafb_set_bpp(engine, dst_bpp);
if (ret)
return ret;
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;
int ret;
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;
}
}
ret = viafb_set_bpp(engine, dst_bpp);
if (ret)
return ret;
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_FILL) {
writel(fg_color, engine + 0x58);
} else if (op == VIA_BITBLT_MONO) {
writel(fg_color, engine + 0x4C);
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_setup_engine(struct fb_info *info)
{
struct viafb_par *viapar = info->par;
void __iomem *engine;
u32 chip_name = viapar->shared->chip_info.gfx_chip_name;
engine = viapar->shared->vdev->engine_mmio;
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:
case UNICHROME_VX900:
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;
#if IS_ENABLED(CONFIG_VIDEO_VIA_CAMERA)
/*
* Set aside a chunk of framebuffer memory for the camera
* driver. Someday this driver probably needs a proper allocator
* for fbmem; for now, we just have to do this before the
* framebuffer initializes itself.
*
* As for the size: the engine can handle three frames,
* 16 bits deep, up to VGA resolution.
*/
viapar->shared->vdev->camera_fbmem_size = 3*VGA_HEIGHT*VGA_WIDTH*2;
viapar->fbmem_free -= viapar->shared->vdev->camera_fbmem_size;
viapar->fbmem_used += viapar->shared->vdev->camera_fbmem_size;
viapar->shared->vdev->camera_fbmem_offset = viapar->fbmem_free;
#endif
viafb_reset_engine(viapar);
return 0;
}
void viafb_reset_engine(struct viafb_par *viapar)
{
void __iomem *engine = viapar->shared->vdev->engine_mmio;
int highest_reg, i;
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;
/* Initialize registers to reset the 2D engine */
switch (viapar->shared->chip_info.twod_engine) {
case VIA_2D_ENG_M1:
highest_reg = 0x5c;
break;
default:
highest_reg = 0x40;
break;
}
for (i = 0; i <= highest_reg; i += 4)
writel(0x0, engine + i);
/* Init AGP and VQ regs */
switch (chip_name) {
case UNICHROME_K8M890:
case UNICHROME_P4M900:
case UNICHROME_VX800:
case UNICHROME_VX855:
case UNICHROME_VX900:
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:
case UNICHROME_VX800:
case UNICHROME_VX855:
case UNICHROME_VX900:
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;
}
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->vdev->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->vdev->engine_mmio + VIA_REG_CURSOR_MODE);
}
void viafb_wait_engine_idle(struct fb_info *info)
{
struct viafb_par *viapar = info->par;
int loop = 0;
u32 mask;
void __iomem *engine = viapar->shared->vdev->engine_mmio;
switch (viapar->shared->chip_info.twod_engine) {
case VIA_2D_ENG_H5:
case VIA_2D_ENG_M1:
mask = VIA_CMD_RGTR_BUSY_M1 | VIA_2D_ENG_BUSY_M1 |
VIA_3D_ENG_BUSY_M1;
break;
default:
while (!(readl(engine + VIA_REG_STATUS) &
VIA_VR_QUEUE_BUSY) && (loop < MAXLOOP)) {
loop++;
cpu_relax();
}
mask = VIA_CMD_RGTR_BUSY | VIA_2D_ENG_BUSY | VIA_3D_ENG_BUSY;
break;
}
while ((readl(engine + VIA_REG_STATUS) & mask) && (loop < MAXLOOP)) {
loop++;
cpu_relax();
}
if (loop >= MAXLOOP)
printk(KERN_ERR "viafb_wait_engine_idle: not syncing\n");
}
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