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path: root/drivers/video/fbdev/nvidia/nv_accel.c
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Diffstat (limited to 'drivers/video/fbdev/nvidia/nv_accel.c')
-rw-r--r--drivers/video/fbdev/nvidia/nv_accel.c416
1 files changed, 416 insertions, 0 deletions
diff --git a/drivers/video/fbdev/nvidia/nv_accel.c b/drivers/video/fbdev/nvidia/nv_accel.c
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index 00000000000..ad6472a894e
--- /dev/null
+++ b/drivers/video/fbdev/nvidia/nv_accel.c
@@ -0,0 +1,416 @@
+ /***************************************************************************\
+|* *|
+|* 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 "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] = {
+ 0xCC, /* copy */
+ 0x55 /* invert */
+};
+
+static const int NVCopyROP_PM[16] = {
+ 0xCA, /* copy */
+ 0x5A, /* 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, 0x0700)) ;
+
+ 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, 0x20000000);
+ 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, 0x00000000);
+
+ NV_WR32(&par->dmaBase[0x0 + SKIPS], 0, 0x00040000);
+ NV_WR32(&par->dmaBase[0x1 + SKIPS], 0, 0x80000010);
+ NV_WR32(&par->dmaBase[0x2 + SKIPS], 0, 0x00042000);
+ NV_WR32(&par->dmaBase[0x3 + SKIPS], 0, 0x80000011);
+ NV_WR32(&par->dmaBase[0x4 + SKIPS], 0, 0x00044000);
+ NV_WR32(&par->dmaBase[0x5 + SKIPS], 0, 0x80000012);
+ NV_WR32(&par->dmaBase[0x6 + SKIPS], 0, 0x00046000);
+ NV_WR32(&par->dmaBase[0x7 + SKIPS], 0, 0x80000013);
+ NV_WR32(&par->dmaBase[0x8 + SKIPS], 0, 0x00048000);
+ NV_WR32(&par->dmaBase[0x9 + SKIPS], 0, 0x80000014);
+ NV_WR32(&par->dmaBase[0xA + SKIPS], 0, 0x0004A000);
+ NV_WR32(&par->dmaBase[0xB + SKIPS], 0, 0x80000015);
+ NV_WR32(&par->dmaBase[0xC + SKIPS], 0, 0x0004C000);
+ NV_WR32(&par->dmaBase[0xD + SKIPS], 0, 0x80000016);
+ NV_WR32(&par->dmaBase[0xE + SKIPS], 0, 0x0004E000);
+ NV_WR32(&par->dmaBase[0xF + SKIPS], 0, 0x80000017);
+
+ 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 & 0xffff));
+ NVDmaNext(par, ((image->dy + image->height) << 16) |
+ ((image->dx + image->width) & 0xffff));
+ 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 & 0xffff));
+
+ 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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