From e15de77e74d429f14641ebe7a29ccd8aa6656f3c Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Tue, 8 May 2007 00:39:35 -0700 Subject: [PATCH] nvidiafb: prevent triggering of softlockup If the chip locks up, we get into a long polling loop, where the softlockup detector kicks in. See https://bugzilla.redhat.com/bugzilla/attachment.cgi?id=151878 for an example. [adaplas] Chip lockup can occur at 3 points (flush, sync, and wait). Consolidate and allow the driver to go to safe mode cleanly. Signed-off-by: Dave Jones Signed-off-by: Antonino Daplas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/nvidia/nv_accel.c | 76 +++++++++++++++++++++++++---------------- drivers/video/nvidia/nv_local.h | 4 +-- 2 files changed, 48 insertions(+), 32 deletions(-) diff --git a/drivers/video/nvidia/nv_accel.c b/drivers/video/nvidia/nv_accel.c index 9efb8a3..fa4821c 100644 --- a/drivers/video/nvidia/nv_accel.c +++ b/drivers/video/nvidia/nv_accel.c @@ -69,27 +69,38 @@ static const int NVCopyROP_PM[16] = { 0x5A, /* invert */ }; -static inline void NVFlush(struct nvidia_par *par) +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"); - par->lockup = 1; + nvidiafb_safe_mode(info); } } -static inline void NVSync(struct nvidia_par *par) +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"); - par->lockup = 1; + nvidiafb_safe_mode(info); } } @@ -101,8 +112,9 @@ static void NVDmaKickoff(struct nvidia_par *par) } } -static void NVDmaWait(struct nvidia_par *par, int size) +static void NVDmaWait(struct fb_info *info, int size) { + struct nvidia_par *par = info->par; int dmaGet; int count = 1000000000, cnt; size++; @@ -135,34 +147,38 @@ static void NVDmaWait(struct nvidia_par *par, int size) } if (!count) { - printk("DMA Wait Lockup\n"); - par->lockup = 1; + printk("nvidiafb: DMA Wait Lockup\n"); + nvidiafb_safe_mode(info); } } -static void NVSetPattern(struct nvidia_par *par, u32 clr0, u32 clr1, +static void NVSetPattern(struct fb_info *info, u32 clr0, u32 clr1, u32 pat0, u32 pat1) { - NVDmaStart(par, PATTERN_COLOR_0, 4); + 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 nvidia_par *par, u32 rop, u32 planemask) +static void NVSetRopSolid(struct fb_info *info, u32 rop, u32 planemask) { + struct nvidia_par *par = info->par; + if (planemask != ~0) { - NVSetPattern(par, 0, planemask, ~0, ~0); + NVSetPattern(info, 0, planemask, ~0, ~0); if (par->currentRop != (rop + 32)) { - NVDmaStart(par, ROP_SET, 1); + 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(par, ~0, ~0, ~0, ~0); - NVDmaStart(par, ROP_SET, 1); + NVSetPattern(info, ~0, ~0, ~0, ~0); + NVDmaStart(info, par, ROP_SET, 1); NVDmaNext(par, NVCopyROP[rop]); par->currentRop = rop; } @@ -175,7 +191,7 @@ static void NVSetClippingRectangle(struct fb_info *info, int x1, int y1, int h = y2 - y1 + 1; int w = x2 - x1 + 1; - NVDmaStart(par, CLIP_POINT, 2); + NVDmaStart(info, par, CLIP_POINT, 2); NVDmaNext(par, (y1 << 16) | x1); NVDmaNext(par, (h << 16) | w); } @@ -237,23 +253,23 @@ void NVResetGraphics(struct fb_info *info) break; } - NVDmaStart(par, SURFACE_FORMAT, 4); + NVDmaStart(info, par, SURFACE_FORMAT, 4); NVDmaNext(par, surfaceFormat); NVDmaNext(par, pitch | (pitch << 16)); NVDmaNext(par, 0); NVDmaNext(par, 0); - NVDmaStart(par, PATTERN_FORMAT, 1); + NVDmaStart(info, par, PATTERN_FORMAT, 1); NVDmaNext(par, patternFormat); - NVDmaStart(par, RECT_FORMAT, 1); + NVDmaStart(info, par, RECT_FORMAT, 1); NVDmaNext(par, rectFormat); - NVDmaStart(par, LINE_FORMAT, 1); + NVDmaStart(info, par, LINE_FORMAT, 1); NVDmaNext(par, lineFormat); par->currentRop = ~0; /* set to something invalid */ - NVSetRopSolid(par, ROP_COPY, ~0); + NVSetRopSolid(info, ROP_COPY, ~0); NVSetClippingRectangle(info, 0, 0, info->var.xres_virtual, info->var.yres_virtual); @@ -269,10 +285,10 @@ int nvidiafb_sync(struct fb_info *info) return 0; if (!par->lockup) - NVFlush(par); + NVFlush(info); if (!par->lockup) - NVSync(par); + NVSync(info); return 0; } @@ -287,7 +303,7 @@ void nvidiafb_copyarea(struct fb_info *info, const struct fb_copyarea *region) if (par->lockup) return cfb_copyarea(info, region); - NVDmaStart(par, BLIT_POINT_SRC, 3); + 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); @@ -312,19 +328,19 @@ void nvidiafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) color = ((u32 *) info->pseudo_palette)[rect->color]; if (rect->rop != ROP_COPY) - NVSetRopSolid(par, rect->rop, ~0); + NVSetRopSolid(info, rect->rop, ~0); - NVDmaStart(par, RECT_SOLID_COLOR, 1); + NVDmaStart(info, par, RECT_SOLID_COLOR, 1); NVDmaNext(par, color); - NVDmaStart(par, RECT_SOLID_RECTS(0), 2); + 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(par, ROP_COPY, ~0); + NVSetRopSolid(info, ROP_COPY, ~0); } static void nvidiafb_mono_color_expand(struct fb_info *info, @@ -346,7 +362,7 @@ static void nvidiafb_mono_color_expand(struct fb_info *info, bg = ((u32 *) info->pseudo_palette)[image->bg_color] | mask; } - NVDmaStart(par, RECT_EXPAND_TWO_COLOR_CLIP, 7); + 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)); @@ -357,7 +373,7 @@ static void nvidiafb_mono_color_expand(struct fb_info *info, NVDmaNext(par, (image->dy << 16) | (image->dx & 0xffff)); while (dsize >= RECT_EXPAND_TWO_COLOR_DATA_MAX_DWORDS) { - NVDmaStart(par, RECT_EXPAND_TWO_COLOR_DATA(0), + 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--;) { @@ -370,7 +386,7 @@ static void nvidiafb_mono_color_expand(struct fb_info *info, } if (dsize) { - NVDmaStart(par, RECT_EXPAND_TWO_COLOR_DATA(0), dsize); + NVDmaStart(info, par, RECT_EXPAND_TWO_COLOR_DATA(0), dsize); for (j = dsize; j--;) { tmp = data[k++]; diff --git a/drivers/video/nvidia/nv_local.h b/drivers/video/nvidia/nv_local.h index e009d24..68e508d 100644 --- a/drivers/video/nvidia/nv_local.h +++ b/drivers/video/nvidia/nv_local.h @@ -73,9 +73,9 @@ #define NVDmaNext(par, data) \ NV_WR32(&(par)->dmaBase[(par)->dmaCurrent++], 0, (data)) -#define NVDmaStart(par, tag, size) { \ +#define NVDmaStart(info, par, tag, size) { \ if((par)->dmaFree <= (size)) \ - NVDmaWait(par, size); \ + NVDmaWait(info, size); \ NVDmaNext(par, ((size) << 18) | (tag)); \ (par)->dmaFree -= ((size) + 1); \ } -- 2.7.4