/***************************************************************************\
| * * |
| * Copyright 1993 - 2003 NVIDIA , Corporation . All rights reserved . * |
| * * |
| * NOTICE TO USER : The source code is copyrighted under U . S . and * |
| * international laws . Users and possessors of this source code are * |
| * hereby granted a nonexclusive , royalty - free copyright license to * |
| * use this code in individual and commercial software . * |
| * * |
| * Any use of this source code must include , in the user documenta - * |
| * tion and internal comments to the code , notices to the end user * |
| * as follows : * |
| * * |
| * Copyright 1993 - 2003 NVIDIA , Corporation . All rights reserved . * |
| * * |
| * NVIDIA , CORPORATION MAKES NO REPRESENTATION ABOUT THE SUITABILITY * |
| * OF THIS SOURCE CODE FOR ANY PURPOSE . IT IS PROVIDED " AS IS " * |
| * WITHOUT EXPRESS OR IMPLIED WARRANTY OF ANY KIND . NVIDIA , CORPOR - * |
| * ATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOURCE CODE , * |
| * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY , NONINFRINGE - * |
| * MENT , AND FITNESS FOR A PARTICULAR PURPOSE . IN NO EVENT SHALL * |
| * NVIDIA , CORPORATION BE LIABLE FOR ANY SPECIAL , INDIRECT , INCI - * |
| * DENTAL , OR CONSEQUENTIAL DAMAGES , OR ANY DAMAGES WHATSOEVER RE - * |
| * SULTING FROM LOSS OF USE , DATA OR PROFITS , WHETHER IN AN ACTION * |
| * OF CONTRACT , NEGLIGENCE OR OTHER TORTIOUS ACTION , ARISING OUT OF * |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOURCE CODE . * |
| * * |
| * U . S . Government End Users . This source code is a " commercial * |
| * item , " as that term is defined at 48 C . F . R . 2 . 101 ( OCT 1995 ) , * |
| * consisting of " commercial computer software " and " commercial * |
| * computer software documentation , " as such terms are used in * |
| * 48 C . F . R . 12 . 212 ( SEPT 1995 ) and is provided to the U . S . Govern - * |
| * ment only as a commercial end item . Consistent with 48 C . F . R . * |
| * 12 . 212 and 48 C . F . R . 227 . 7202 - 1 through 227 . 7202 - 4 ( JUNE 1995 ) , * |
| * all U . S . Government End Users acquire the source code with only * |
| * those rights set forth herein . * |
| * * |
\***************************************************************************/
/*
* GPL Licensing Note - According to Mark Vojkovich , author of the Xorg /
* XFree86 ' nv ' driver , this source code is provided under MIT - style licensing
* where the source code is provided " as is " without warranty of any kind .
* The only usage restriction is for the copyright notices to be retained
* whenever code is used .
*
* Antonino Daplas < adaplas @ pol . net > 2005 - 03 - 11
*/
#include <linux/fb.h>
#include <linux/nmi.h>
#include "nv_type.h"
#include "nv_proto.h"
#include "nv_dma.h"
#include "nv_local.h"
/* There is a HW race condition with videoram command buffers.
You can ' t jump to the location of your put offset . We write put
at the jump offset + SKIPS dwords with noop padding in between
to solve this problem */
#define SKIPS 8
static const int NVCopyROP[16 ] = {
0 xCC, /* copy */
0 x55 /* invert */
};
static const int NVCopyROP_PM[16 ] = {
0 xCA, /* copy */
0 x5A, /* invert */
};
static inline void nvidiafb_safe_mode(struct fb_info *info)
{
struct nvidia_par *par = info->par;
touch_softlockup_watchdog();
info->pixmap.scan_align = 1 ;
par->lockup = 1 ;
}
static inline void NVFlush(struct fb_info *info)
{
struct nvidia_par *par = info->par;
int count = 1000000000 ;
while (--count && READ_GET(par) != par->dmaPut) ;
if (!count) {
printk("nvidiafb: DMA Flush lockup\n" );
nvidiafb_safe_mode(info);
}
}
static inline void NVSync(struct fb_info *info)
{
struct nvidia_par *par = info->par;
int count = 1000000000 ;
while (--count && NV_RD32(par->PGRAPH, 0 x0700)) ;
if (!count) {
printk("nvidiafb: DMA Sync lockup\n" );
nvidiafb_safe_mode(info);
}
}
static void NVDmaKickoff(struct nvidia_par *par)
{
if (par->dmaCurrent != par->dmaPut) {
par->dmaPut = par->dmaCurrent;
WRITE_PUT(par, par->dmaPut);
}
}
static void NVDmaWait(struct fb_info *info, int size)
{
struct nvidia_par *par = info->par;
int dmaGet;
int count = 1000000000 , cnt;
size++;
while (par->dmaFree < size && --count && !par->lockup) {
dmaGet = READ_GET(par);
if (par->dmaPut >= dmaGet) {
par->dmaFree = par->dmaMax - par->dmaCurrent;
if (par->dmaFree < size) {
NVDmaNext(par, 0 x20000000);
if (dmaGet <= SKIPS) {
if (par->dmaPut <= SKIPS)
WRITE_PUT(par, SKIPS + 1 );
cnt = 1000000000 ;
do {
dmaGet = READ_GET(par);
} while (--cnt && dmaGet <= SKIPS);
if (!cnt) {
printk("DMA Get lockup\n" );
par->lockup = 1 ;
}
}
WRITE_PUT(par, SKIPS);
par->dmaCurrent = par->dmaPut = SKIPS;
par->dmaFree = dmaGet - (SKIPS + 1 );
}
} else
par->dmaFree = dmaGet - par->dmaCurrent - 1 ;
}
if (!count) {
printk("nvidiafb: DMA Wait Lockup\n" );
nvidiafb_safe_mode(info);
}
}
static void NVSetPattern(struct fb_info *info, u32 clr0, u32 clr1,
u32 pat0, u32 pat1)
{
struct nvidia_par *par = info->par;
NVDmaStart(info, par, PATTERN_COLOR_0, 4 );
NVDmaNext(par, clr0);
NVDmaNext(par, clr1);
NVDmaNext(par, pat0);
NVDmaNext(par, pat1);
}
static void NVSetRopSolid(struct fb_info *info, u32 rop, u32 planemask)
{
struct nvidia_par *par = info->par;
if (planemask != ~0 ) {
NVSetPattern(info, 0 , planemask, ~0 , ~0 );
if (par->currentRop != (rop + 32 )) {
NVDmaStart(info, par, ROP_SET, 1 );
NVDmaNext(par, NVCopyROP_PM[rop]);
par->currentRop = rop + 32 ;
}
} else if (par->currentRop != rop) {
if (par->currentRop >= 16 )
NVSetPattern(info, ~0 , ~0 , ~0 , ~0 );
NVDmaStart(info, par, ROP_SET, 1 );
NVDmaNext(par, NVCopyROP[rop]);
par->currentRop = rop;
}
}
static void NVSetClippingRectangle(struct fb_info *info, int x1, int y1,
int x2, int y2)
{
struct nvidia_par *par = info->par;
int h = y2 - y1 + 1 ;
int w = x2 - x1 + 1 ;
NVDmaStart(info, par, CLIP_POINT, 2 );
NVDmaNext(par, (y1 << 16 ) | x1);
NVDmaNext(par, (h << 16 ) | w);
}
void NVResetGraphics(struct fb_info *info)
{
struct nvidia_par *par = info->par;
u32 surfaceFormat, patternFormat, rectFormat, lineFormat;
int pitch, i;
pitch = info->fix.line_length;
par->dmaBase = (u32 __iomem *) (&par->FbStart[par->FbUsableSize]);
for (i = 0 ; i < SKIPS; i++)
NV_WR32(&par->dmaBase[i], 0 , 0 x00000000);
NV_WR32(&par->dmaBase[0 x0 + SKIPS], 0 , 0 x00040000);
NV_WR32(&par->dmaBase[0 x1 + SKIPS], 0 , 0 x80000010);
NV_WR32(&par->dmaBase[0 x2 + SKIPS], 0 , 0 x00042000);
NV_WR32(&par->dmaBase[0 x3 + SKIPS], 0 , 0 x80000011);
NV_WR32(&par->dmaBase[0 x4 + SKIPS], 0 , 0 x00044000);
NV_WR32(&par->dmaBase[0 x5 + SKIPS], 0 , 0 x80000012);
NV_WR32(&par->dmaBase[0 x6 + SKIPS], 0 , 0 x00046000);
NV_WR32(&par->dmaBase[0 x7 + SKIPS], 0 , 0 x80000013);
NV_WR32(&par->dmaBase[0 x8 + SKIPS], 0 , 0 x00048000);
NV_WR32(&par->dmaBase[0 x9 + SKIPS], 0 , 0 x80000014);
NV_WR32(&par->dmaBase[0 xA + SKIPS], 0 , 0 x0004A000);
NV_WR32(&par->dmaBase[0 xB + SKIPS], 0 , 0 x80000015);
NV_WR32(&par->dmaBase[0 xC + SKIPS], 0 , 0 x0004C000);
NV_WR32(&par->dmaBase[0 xD + SKIPS], 0 , 0 x80000016);
NV_WR32(&par->dmaBase[0 xE + SKIPS], 0 , 0 x0004E000);
NV_WR32(&par->dmaBase[0 xF + SKIPS], 0 , 0 x80000017);
par->dmaPut = 0 ;
par->dmaCurrent = 16 + SKIPS;
par->dmaMax = 8191 ;
par->dmaFree = par->dmaMax - par->dmaCurrent;
switch (info->var.bits_per_pixel) {
case 32 :
case 24 :
surfaceFormat = SURFACE_FORMAT_DEPTH24;
patternFormat = PATTERN_FORMAT_DEPTH24;
rectFormat = RECT_FORMAT_DEPTH24;
lineFormat = LINE_FORMAT_DEPTH24;
break ;
case 16 :
surfaceFormat = SURFACE_FORMAT_DEPTH16;
patternFormat = PATTERN_FORMAT_DEPTH16;
rectFormat = RECT_FORMAT_DEPTH16;
lineFormat = LINE_FORMAT_DEPTH16;
break ;
default :
surfaceFormat = SURFACE_FORMAT_DEPTH8;
patternFormat = PATTERN_FORMAT_DEPTH8;
rectFormat = RECT_FORMAT_DEPTH8;
lineFormat = LINE_FORMAT_DEPTH8;
break ;
}
NVDmaStart(info, par, SURFACE_FORMAT, 4 );
NVDmaNext(par, surfaceFormat);
NVDmaNext(par, pitch | (pitch << 16 ));
NVDmaNext(par, 0 );
NVDmaNext(par, 0 );
NVDmaStart(info, par, PATTERN_FORMAT, 1 );
NVDmaNext(par, patternFormat);
NVDmaStart(info, par, RECT_FORMAT, 1 );
NVDmaNext(par, rectFormat);
NVDmaStart(info, par, LINE_FORMAT, 1 );
NVDmaNext(par, lineFormat);
par->currentRop = ~0 ; /* set to something invalid */
NVSetRopSolid(info, ROP_COPY, ~0 );
NVSetClippingRectangle(info, 0 , 0 , info->var.xres_virtual,
info->var.yres_virtual);
NVDmaKickoff(par);
}
int nvidiafb_sync(struct fb_info *info)
{
struct nvidia_par *par = info->par;
if (info->state != FBINFO_STATE_RUNNING)
return 0 ;
if (!par->lockup)
NVFlush(info);
if (!par->lockup)
NVSync(info);
return 0 ;
}
void nvidiafb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
{
struct nvidia_par *par = info->par;
if (info->state != FBINFO_STATE_RUNNING)
return ;
if (par->lockup) {
cfb_copyarea(info, region);
return ;
}
NVDmaStart(info, par, BLIT_POINT_SRC, 3 );
NVDmaNext(par, (region->sy << 16 ) | region->sx);
NVDmaNext(par, (region->dy << 16 ) | region->dx);
NVDmaNext(par, (region->height << 16 ) | region->width);
NVDmaKickoff(par);
}
void nvidiafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
struct nvidia_par *par = info->par;
u32 color;
if (info->state != FBINFO_STATE_RUNNING)
return ;
if (par->lockup) {
cfb_fillrect(info, rect);
return ;
}
if (info->var.bits_per_pixel == 8 )
color = rect->color;
else
color = ((u32 *) info->pseudo_palette)[rect->color];
if (rect->rop != ROP_COPY)
NVSetRopSolid(info, rect->rop, ~0 );
NVDmaStart(info, par, RECT_SOLID_COLOR, 1 );
NVDmaNext(par, color);
NVDmaStart(info, par, RECT_SOLID_RECTS(0 ), 2 );
NVDmaNext(par, (rect->dx << 16 ) | rect->dy);
NVDmaNext(par, (rect->width << 16 ) | rect->height);
NVDmaKickoff(par);
if (rect->rop != ROP_COPY)
NVSetRopSolid(info, ROP_COPY, ~0 );
}
static void nvidiafb_mono_color_expand(struct fb_info *info,
const struct fb_image *image)
{
struct nvidia_par *par = info->par;
u32 fg, bg, mask = ~(~0 >> (32 - info->var.bits_per_pixel));
u32 dsize, width, *data = (u32 *) image->data, tmp;
int j, k = 0 ;
width = (image->width + 31 ) & ~31 ;
dsize = (width * image->height) >> 5 ;
if (info->var.bits_per_pixel == 8 ) {
fg = image->fg_color | mask;
bg = image->bg_color | mask;
} else {
fg = ((u32 *) info->pseudo_palette)[image->fg_color] | mask;
bg = ((u32 *) info->pseudo_palette)[image->bg_color] | mask;
}
NVDmaStart(info, par, RECT_EXPAND_TWO_COLOR_CLIP, 7 );
NVDmaNext(par, (image->dy << 16 ) | (image->dx & 0 xffff));
NVDmaNext(par, ((image->dy + image->height) << 16 ) |
((image->dx + image->width) & 0 xffff));
NVDmaNext(par, bg);
NVDmaNext(par, fg);
NVDmaNext(par, (image->height << 16 ) | width);
NVDmaNext(par, (image->height << 16 ) | width);
NVDmaNext(par, (image->dy << 16 ) | (image->dx & 0 xffff));
while (dsize >= RECT_EXPAND_TWO_COLOR_DATA_MAX_DWORDS) {
NVDmaStart(info, par, RECT_EXPAND_TWO_COLOR_DATA(0 ),
RECT_EXPAND_TWO_COLOR_DATA_MAX_DWORDS);
for (j = RECT_EXPAND_TWO_COLOR_DATA_MAX_DWORDS; j--;) {
tmp = data[k++];
reverse_order(&tmp);
NVDmaNext(par, tmp);
}
dsize -= RECT_EXPAND_TWO_COLOR_DATA_MAX_DWORDS;
}
if (dsize) {
NVDmaStart(info, par, RECT_EXPAND_TWO_COLOR_DATA(0 ), dsize);
for (j = dsize; j--;) {
tmp = data[k++];
reverse_order(&tmp);
NVDmaNext(par, tmp);
}
}
NVDmaKickoff(par);
}
void nvidiafb_imageblit(struct fb_info *info, const struct fb_image *image)
{
struct nvidia_par *par = info->par;
if (info->state != FBINFO_STATE_RUNNING)
return ;
if (image->depth == 1 && !par->lockup)
nvidiafb_mono_color_expand(info, image);
else
cfb_imageblit(info, image);
}
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