457 строки
12 KiB
C
457 строки
12 KiB
C
/*-*- linux-c -*-
|
|
* linux/drivers/video/i810_accel.c -- Hardware Acceleration
|
|
*
|
|
* Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
|
|
* All Rights Reserved
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file COPYING in the main directory of this archive for
|
|
* more details.
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/string.h>
|
|
#include <linux/fb.h>
|
|
|
|
#include "i810_regs.h"
|
|
#include "i810.h"
|
|
#include "i810_main.h"
|
|
|
|
static u32 i810fb_rop[] = {
|
|
COLOR_COPY_ROP, /* ROP_COPY */
|
|
XOR_ROP /* ROP_XOR */
|
|
};
|
|
|
|
/* Macros */
|
|
#define PUT_RING(n) { \
|
|
i810_writel(par->cur_tail, par->iring.virtual, n); \
|
|
par->cur_tail += 4; \
|
|
par->cur_tail &= RING_SIZE_MASK; \
|
|
}
|
|
|
|
extern void flush_cache(void);
|
|
|
|
/************************************************************/
|
|
|
|
/* BLT Engine Routines */
|
|
static inline void i810_report_error(u8 __iomem *mmio)
|
|
{
|
|
printk("IIR : 0x%04x\n"
|
|
"EIR : 0x%04x\n"
|
|
"PGTBL_ER: 0x%04x\n"
|
|
"IPEIR : 0x%04x\n"
|
|
"IPEHR : 0x%04x\n",
|
|
i810_readw(IIR, mmio),
|
|
i810_readb(EIR, mmio),
|
|
i810_readl(PGTBL_ER, mmio),
|
|
i810_readl(IPEIR, mmio),
|
|
i810_readl(IPEHR, mmio));
|
|
}
|
|
|
|
/**
|
|
* wait_for_space - check ring buffer free space
|
|
* @space: amount of ringbuffer space needed in bytes
|
|
* @par: pointer to i810fb_par structure
|
|
*
|
|
* DESCRIPTION:
|
|
* The function waits until a free space from the ringbuffer
|
|
* is available
|
|
*/
|
|
static inline int wait_for_space(struct fb_info *info, u32 space)
|
|
{
|
|
struct i810fb_par *par = info->par;
|
|
u32 head, count = WAIT_COUNT, tail;
|
|
u8 __iomem *mmio = par->mmio_start_virtual;
|
|
|
|
tail = par->cur_tail;
|
|
while (count--) {
|
|
head = i810_readl(IRING + 4, mmio) & RBUFFER_HEAD_MASK;
|
|
if ((tail == head) ||
|
|
(tail > head &&
|
|
(par->iring.size - tail + head) >= space) ||
|
|
(tail < head && (head - tail) >= space)) {
|
|
return 0;
|
|
}
|
|
}
|
|
printk("ringbuffer lockup!!!\n");
|
|
i810_report_error(mmio);
|
|
par->dev_flags |= LOCKUP;
|
|
info->pixmap.scan_align = 1;
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* wait_for_engine_idle - waits for all hardware engines to finish
|
|
* @par: pointer to i810fb_par structure
|
|
*
|
|
* DESCRIPTION:
|
|
* This waits for lring(0), iring(1), and batch(3), etc to finish and
|
|
* waits until ringbuffer is empty.
|
|
*/
|
|
static inline int wait_for_engine_idle(struct fb_info *info)
|
|
{
|
|
struct i810fb_par *par = info->par;
|
|
u8 __iomem *mmio = par->mmio_start_virtual;
|
|
int count = WAIT_COUNT;
|
|
|
|
if (wait_for_space(info, par->iring.size)) /* flush */
|
|
return 1;
|
|
|
|
while((i810_readw(INSTDONE, mmio) & 0x7B) != 0x7B && --count);
|
|
if (count) return 0;
|
|
|
|
printk("accel engine lockup!!!\n");
|
|
printk("INSTDONE: 0x%04x\n", i810_readl(INSTDONE, mmio));
|
|
i810_report_error(mmio);
|
|
par->dev_flags |= LOCKUP;
|
|
info->pixmap.scan_align = 1;
|
|
return 1;
|
|
}
|
|
|
|
/* begin_iring - prepares the ringbuffer
|
|
* @space: length of sequence in dwords
|
|
* @par: pointer to i810fb_par structure
|
|
*
|
|
* DESCRIPTION:
|
|
* Checks/waits for sufficient space in ringbuffer of size
|
|
* space. Returns the tail of the buffer
|
|
*/
|
|
static inline u32 begin_iring(struct fb_info *info, u32 space)
|
|
{
|
|
struct i810fb_par *par = info->par;
|
|
|
|
if (par->dev_flags & ALWAYS_SYNC)
|
|
wait_for_engine_idle(info);
|
|
return wait_for_space(info, space);
|
|
}
|
|
|
|
/**
|
|
* end_iring - advances the buffer
|
|
* @par: pointer to i810fb_par structure
|
|
*
|
|
* DESCRIPTION:
|
|
* This advances the tail of the ringbuffer, effectively
|
|
* beginning the execution of the graphics instruction sequence.
|
|
*/
|
|
static inline void end_iring(struct i810fb_par *par)
|
|
{
|
|
u8 __iomem *mmio = par->mmio_start_virtual;
|
|
|
|
i810_writel(IRING, mmio, par->cur_tail);
|
|
}
|
|
|
|
/**
|
|
* source_copy_blit - BLIT transfer operation
|
|
* @dwidth: width of rectangular graphics data
|
|
* @dheight: height of rectangular graphics data
|
|
* @dpitch: bytes per line of destination buffer
|
|
* @xdir: direction of copy (left to right or right to left)
|
|
* @src: address of first pixel to read from
|
|
* @dest: address of first pixel to write to
|
|
* @from: source address
|
|
* @where: destination address
|
|
* @rop: raster operation
|
|
* @blit_bpp: pixel format which can be different from the
|
|
* framebuffer's pixelformat
|
|
* @par: pointer to i810fb_par structure
|
|
*
|
|
* DESCRIPTION:
|
|
* This is a BLIT operation typically used when doing
|
|
* a 'Copy and Paste'
|
|
*/
|
|
static inline void source_copy_blit(int dwidth, int dheight, int dpitch,
|
|
int xdir, int src, int dest, int rop,
|
|
int blit_bpp, struct fb_info *info)
|
|
{
|
|
struct i810fb_par *par = info->par;
|
|
|
|
if (begin_iring(info, 24 + IRING_PAD)) return;
|
|
|
|
PUT_RING(BLIT | SOURCE_COPY_BLIT | 4);
|
|
PUT_RING(xdir | rop << 16 | dpitch | DYN_COLOR_EN | blit_bpp);
|
|
PUT_RING(dheight << 16 | dwidth);
|
|
PUT_RING(dest);
|
|
PUT_RING(dpitch);
|
|
PUT_RING(src);
|
|
|
|
end_iring(par);
|
|
}
|
|
|
|
/**
|
|
* color_blit - solid color BLIT operation
|
|
* @width: width of destination
|
|
* @height: height of destination
|
|
* @pitch: pixels per line of the buffer
|
|
* @dest: address of first pixel to write to
|
|
* @where: destination
|
|
* @rop: raster operation
|
|
* @what: color to transfer
|
|
* @blit_bpp: pixel format which can be different from the
|
|
* framebuffer's pixelformat
|
|
* @par: pointer to i810fb_par structure
|
|
*
|
|
* DESCRIPTION:
|
|
* A BLIT operation which can be used for color fill/rectangular fill
|
|
*/
|
|
static inline void color_blit(int width, int height, int pitch, int dest,
|
|
int rop, int what, int blit_bpp,
|
|
struct fb_info *info)
|
|
{
|
|
struct i810fb_par *par = info->par;
|
|
|
|
if (begin_iring(info, 24 + IRING_PAD)) return;
|
|
|
|
PUT_RING(BLIT | COLOR_BLT | 3);
|
|
PUT_RING(rop << 16 | pitch | SOLIDPATTERN | DYN_COLOR_EN | blit_bpp);
|
|
PUT_RING(height << 16 | width);
|
|
PUT_RING(dest);
|
|
PUT_RING(what);
|
|
PUT_RING(NOP);
|
|
|
|
end_iring(par);
|
|
}
|
|
|
|
/**
|
|
* mono_src_copy_imm_blit - color expand from system memory to framebuffer
|
|
* @dwidth: width of destination
|
|
* @dheight: height of destination
|
|
* @dpitch: pixels per line of the buffer
|
|
* @dsize: size of bitmap in double words
|
|
* @dest: address of first byte of pixel;
|
|
* @rop: raster operation
|
|
* @blit_bpp: pixelformat to use which can be different from the
|
|
* framebuffer's pixelformat
|
|
* @src: address of image data
|
|
* @bg: backgound color
|
|
* @fg: forground color
|
|
* @par: pointer to i810fb_par structure
|
|
*
|
|
* DESCRIPTION:
|
|
* A color expand operation where the source data is placed in the
|
|
* ringbuffer itself. Useful for drawing text.
|
|
*
|
|
* REQUIREMENT:
|
|
* The end of a scanline must be padded to the next word.
|
|
*/
|
|
static inline void mono_src_copy_imm_blit(int dwidth, int dheight, int dpitch,
|
|
int dsize, int blit_bpp, int rop,
|
|
int dest, const u32 *src, int bg,
|
|
int fg, struct fb_info *info)
|
|
{
|
|
struct i810fb_par *par = info->par;
|
|
|
|
if (begin_iring(info, 24 + (dsize << 2) + IRING_PAD)) return;
|
|
|
|
PUT_RING(BLIT | MONO_SOURCE_COPY_IMMEDIATE | (4 + dsize));
|
|
PUT_RING(DYN_COLOR_EN | blit_bpp | rop << 16 | dpitch);
|
|
PUT_RING(dheight << 16 | dwidth);
|
|
PUT_RING(dest);
|
|
PUT_RING(bg);
|
|
PUT_RING(fg);
|
|
while (dsize--)
|
|
PUT_RING(*src++);
|
|
|
|
end_iring(par);
|
|
}
|
|
|
|
static inline void load_front(int offset, struct fb_info *info)
|
|
{
|
|
struct i810fb_par *par = info->par;
|
|
|
|
if (begin_iring(info, 8 + IRING_PAD)) return;
|
|
|
|
PUT_RING(PARSER | FLUSH);
|
|
PUT_RING(NOP);
|
|
|
|
end_iring(par);
|
|
|
|
if (begin_iring(info, 8 + IRING_PAD)) return;
|
|
|
|
PUT_RING(PARSER | FRONT_BUFFER | ((par->pitch >> 3) << 8));
|
|
PUT_RING((par->fb.offset << 12) + offset);
|
|
|
|
end_iring(par);
|
|
}
|
|
|
|
/**
|
|
* i810fb_iring_enable - enables/disables the ringbuffer
|
|
* @mode: enable or disable
|
|
* @par: pointer to i810fb_par structure
|
|
*
|
|
* DESCRIPTION:
|
|
* Enables or disables the ringbuffer, effectively enabling or
|
|
* disabling the instruction/acceleration engine.
|
|
*/
|
|
static inline void i810fb_iring_enable(struct i810fb_par *par, u32 mode)
|
|
{
|
|
u32 tmp;
|
|
u8 __iomem *mmio = par->mmio_start_virtual;
|
|
|
|
tmp = i810_readl(IRING + 12, mmio);
|
|
if (mode == OFF)
|
|
tmp &= ~1;
|
|
else
|
|
tmp |= 1;
|
|
flush_cache();
|
|
i810_writel(IRING + 12, mmio, tmp);
|
|
}
|
|
|
|
void i810fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
|
|
{
|
|
struct i810fb_par *par = info->par;
|
|
u32 dx, dy, width, height, dest, rop = 0, color = 0;
|
|
|
|
if (!info->var.accel_flags || par->dev_flags & LOCKUP ||
|
|
par->depth == 4) {
|
|
cfb_fillrect(info, rect);
|
|
return;
|
|
}
|
|
|
|
if (par->depth == 1)
|
|
color = rect->color;
|
|
else
|
|
color = ((u32 *) (info->pseudo_palette))[rect->color];
|
|
|
|
rop = i810fb_rop[rect->rop];
|
|
|
|
dx = rect->dx * par->depth;
|
|
width = rect->width * par->depth;
|
|
dy = rect->dy;
|
|
height = rect->height;
|
|
|
|
dest = info->fix.smem_start + (dy * info->fix.line_length) + dx;
|
|
color_blit(width, height, info->fix.line_length, dest, rop, color,
|
|
par->blit_bpp, info);
|
|
}
|
|
|
|
void i810fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
|
|
{
|
|
struct i810fb_par *par = info->par;
|
|
u32 sx, sy, dx, dy, pitch, width, height, src, dest, xdir;
|
|
|
|
if (!info->var.accel_flags || par->dev_flags & LOCKUP ||
|
|
par->depth == 4) {
|
|
cfb_copyarea(info, region);
|
|
return;
|
|
}
|
|
|
|
dx = region->dx * par->depth;
|
|
sx = region->sx * par->depth;
|
|
width = region->width * par->depth;
|
|
sy = region->sy;
|
|
dy = region->dy;
|
|
height = region->height;
|
|
|
|
if (dx <= sx) {
|
|
xdir = INCREMENT;
|
|
}
|
|
else {
|
|
xdir = DECREMENT;
|
|
sx += width - 1;
|
|
dx += width - 1;
|
|
}
|
|
if (dy <= sy) {
|
|
pitch = info->fix.line_length;
|
|
}
|
|
else {
|
|
pitch = (-(info->fix.line_length)) & 0xFFFF;
|
|
sy += height - 1;
|
|
dy += height - 1;
|
|
}
|
|
src = info->fix.smem_start + (sy * info->fix.line_length) + sx;
|
|
dest = info->fix.smem_start + (dy * info->fix.line_length) + dx;
|
|
|
|
source_copy_blit(width, height, pitch, xdir, src, dest,
|
|
PAT_COPY_ROP, par->blit_bpp, info);
|
|
}
|
|
|
|
void i810fb_imageblit(struct fb_info *info, const struct fb_image *image)
|
|
{
|
|
struct i810fb_par *par = info->par;
|
|
u32 fg = 0, bg = 0, size, dst;
|
|
|
|
if (!info->var.accel_flags || par->dev_flags & LOCKUP ||
|
|
par->depth == 4 || image->depth != 1) {
|
|
cfb_imageblit(info, image);
|
|
return;
|
|
}
|
|
|
|
switch (info->var.bits_per_pixel) {
|
|
case 8:
|
|
fg = image->fg_color;
|
|
bg = image->bg_color;
|
|
break;
|
|
case 16:
|
|
case 24:
|
|
fg = ((u32 *)(info->pseudo_palette))[image->fg_color];
|
|
bg = ((u32 *)(info->pseudo_palette))[image->bg_color];
|
|
break;
|
|
}
|
|
|
|
dst = info->fix.smem_start + (image->dy * info->fix.line_length) +
|
|
(image->dx * par->depth);
|
|
|
|
size = (image->width+7)/8 + 1;
|
|
size &= ~1;
|
|
size *= image->height;
|
|
size += 7;
|
|
size &= ~7;
|
|
mono_src_copy_imm_blit(image->width * par->depth,
|
|
image->height, info->fix.line_length,
|
|
size/4, par->blit_bpp,
|
|
PAT_COPY_ROP, dst, (u32 *) image->data,
|
|
bg, fg, info);
|
|
}
|
|
|
|
int i810fb_sync(struct fb_info *info)
|
|
{
|
|
struct i810fb_par *par = info->par;
|
|
|
|
if (!info->var.accel_flags || par->dev_flags & LOCKUP)
|
|
return 0;
|
|
|
|
return wait_for_engine_idle(info);
|
|
}
|
|
|
|
void i810fb_load_front(u32 offset, struct fb_info *info)
|
|
{
|
|
struct i810fb_par *par = info->par;
|
|
u8 __iomem *mmio = par->mmio_start_virtual;
|
|
|
|
if (!info->var.accel_flags || par->dev_flags & LOCKUP)
|
|
i810_writel(DPLYBASE, mmio, par->fb.physical + offset);
|
|
else
|
|
load_front(offset, info);
|
|
}
|
|
|
|
/**
|
|
* i810fb_init_ringbuffer - initialize the ringbuffer
|
|
* @par: pointer to i810fb_par structure
|
|
*
|
|
* DESCRIPTION:
|
|
* Initializes the ringbuffer by telling the device the
|
|
* size and location of the ringbuffer. It also sets
|
|
* the head and tail pointers = 0
|
|
*/
|
|
void i810fb_init_ringbuffer(struct fb_info *info)
|
|
{
|
|
struct i810fb_par *par = info->par;
|
|
u32 tmp1, tmp2;
|
|
u8 __iomem *mmio = par->mmio_start_virtual;
|
|
|
|
wait_for_engine_idle(info);
|
|
i810fb_iring_enable(par, OFF);
|
|
i810_writel(IRING, mmio, 0);
|
|
i810_writel(IRING + 4, mmio, 0);
|
|
par->cur_tail = 0;
|
|
|
|
tmp2 = i810_readl(IRING + 8, mmio) & ~RBUFFER_START_MASK;
|
|
tmp1 = par->iring.physical;
|
|
i810_writel(IRING + 8, mmio, tmp2 | tmp1);
|
|
|
|
tmp1 = i810_readl(IRING + 12, mmio);
|
|
tmp1 &= ~RBUFFER_SIZE_MASK;
|
|
tmp2 = (par->iring.size - I810_PAGESIZE) & RBUFFER_SIZE_MASK;
|
|
i810_writel(IRING + 12, mmio, tmp1 | tmp2);
|
|
i810fb_iring_enable(par, ON);
|
|
}
|