radeonfb: accelerate imageblit and other improvements

Implement support for HW color expansion of 1bpp images, along with some
improvements to the FIFO handling and other accel operations.

The offset fixup code is now unnecessary as the fbcon core will call our
set_par upon switch back from KD_GRAPHICS before anything else happens.  I
removed it as it would slow down accel operations.

The fifo wait has been improved to avoid hitting the HW register as often,
and the various accel ops are now performing better caching of register
values.

Overall, this improve accel performances.  The imageblit acceleration does
result in a small overall regression in performances on some machines (on
the order of 5% on some x86), probably becaus the SW path provides a
better bus utilisation, but I decided to ingnore that as the performances
is still very good, and on the other hand, some machines such as some
sparc64 get a 3 fold performance improvement.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

5 files changed, 237 insertions, 122 deletions

diff --git a/drivers/video/aty/radeon_accel.c b/drivers/video/aty/radeon_accel.c
index a469a3d..8718f73 100644
--- a/drivers/video/aty/radeon_accel.c
+++ b/drivers/video/aty/radeon_accel.c
@@ -5,61 +5,61 @@
  * --dte
  */
 
-static void radeon_fixup_offset(struct radeonfb_info *rinfo)
+#define FLUSH_CACHE_WORKAROUND	1
+
+void radeon_fifo_update_and_wait(struct radeonfb_info *rinfo, int entries)
 {
-	u32 local_base;
-
-	/* *** Ugly workaround *** */
-	/*
-	 * On some platforms, the video memory is mapped at 0 in radeon chip space
-	 * (like PPCs) by the firmware. X will always move it up so that it's seen
-	 * by the chip to be at the same address as the PCI BAR.
-	 * That means that when switching back from X, there is a mismatch between
-	 * the offsets programmed into the engine. This means that potentially,
-	 * accel operations done before radeonfb has a chance to re-init the engine
-	 * will have incorrect offsets, and potentially trash system memory !
-	 *
-	 * The correct fix is for fbcon to never call any accel op before the engine
-	 * has properly been re-initialized (by a call to set_var), but this is a
-	 * complex fix. This workaround in the meantime, called before every accel
-	 * operation, makes sure the offsets are in sync.
-	 */
+	int i;
 
-	radeon_fifo_wait (1);
-	local_base = INREG(MC_FB_LOCATION) << 16;
-	if (local_base == rinfo->fb_local_base)
-		return;
+	for (i=0; i<2000000; i++) {
+		rinfo->fifo_free = INREG(RBBM_STATUS) & 0x7f;
+		if (rinfo->fifo_free >= entries)
+			return;
+		udelay(10);
+	}
+	printk(KERN_ERR "radeonfb: FIFO Timeout !\n");
+	/* XXX Todo: attempt to reset the engine */
+}
 
-	rinfo->fb_local_base = local_base;
+static inline void radeon_fifo_wait(struct radeonfb_info *rinfo, int entries)
+{
+	if (entries <= rinfo->fifo_free)
+		rinfo->fifo_free -= entries;
+	else
+		radeon_fifo_update_and_wait(rinfo, entries);
+}
 
-	radeon_fifo_wait (3);
-	OUTREG(DEFAULT_PITCH_OFFSET, (rinfo->pitch << 0x16) |
-				     (rinfo->fb_local_base >> 10));
-	OUTREG(DST_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
-	OUTREG(SRC_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
+static inline void radeonfb_set_creg(struct radeonfb_info *rinfo, u32 reg,
+				     u32 *cache, u32 new_val)
+{
+	if (new_val == *cache)
+		return;
+	*cache = new_val;
+	radeon_fifo_wait(rinfo, 1);
+	OUTREG(reg, new_val);
 }
 
 static void radeonfb_prim_fillrect(struct radeonfb_info *rinfo, 
 				   const struct fb_fillrect *region)
 {
-	radeon_fifo_wait(4);  
-  
-	OUTREG(DP_GUI_MASTER_CNTL,  
-		rinfo->dp_gui_master_cntl  /* contains, like GMC_DST_32BPP */
-                | GMC_BRUSH_SOLID_COLOR
-                | ROP3_P);
-	if (radeon_get_dstbpp(rinfo->depth) != DST_8BPP)
-		OUTREG(DP_BRUSH_FRGD_CLR, rinfo->pseudo_palette[region->color]);
-	else
-		OUTREG(DP_BRUSH_FRGD_CLR, region->color);
-	OUTREG(DP_WRITE_MSK, 0xffffffff);
-	OUTREG(DP_CNTL, (DST_X_LEFT_TO_RIGHT | DST_Y_TOP_TO_BOTTOM));
-
-	radeon_fifo_wait(2);
+	radeonfb_set_creg(rinfo, DP_GUI_MASTER_CNTL, &rinfo->dp_gui_mc_cache,
+			  rinfo->dp_gui_mc_base | GMC_BRUSH_SOLID_COLOR | ROP3_P);
+	radeonfb_set_creg(rinfo, DP_CNTL, &rinfo->dp_cntl_cache,
+			  DST_X_LEFT_TO_RIGHT | DST_Y_TOP_TO_BOTTOM);
+	radeonfb_set_creg(rinfo, DP_BRUSH_FRGD_CLR, &rinfo->dp_brush_fg_cache,
+			  region->color);
+
+	/* Ensure the dst cache is flushed and the engine idle before
+	 * issuing the operation.
+	 *
+	 * This works around engine lockups on some cards
+	 */
+#if FLUSH_CACHE_WORKAROUND
+	radeon_fifo_wait(rinfo, 2);
 	OUTREG(DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL);
 	OUTREG(WAIT_UNTIL, (WAIT_2D_IDLECLEAN | WAIT_DMA_GUI_IDLE));
-
-	radeon_fifo_wait(2);  
+#endif
+	radeon_fifo_wait(rinfo, 2);
 	OUTREG(DST_Y_X, (region->dy << 16) | region->dx);
 	OUTREG(DST_WIDTH_HEIGHT, (region->width << 16) | region->height);
 }
@@ -70,15 +70,14 @@ void radeonfb_fillrect(struct fb_info *info, const struct fb_fillrect *region)
 	struct fb_fillrect modded;
 	int vxres, vyres;
   
-	if (info->state != FBINFO_STATE_RUNNING)
+	WARN_ON(rinfo->gfx_mode);
+	if (info->state != FBINFO_STATE_RUNNING || rinfo->gfx_mode)
 		return;
 	if (info->flags & FBINFO_HWACCEL_DISABLED) {
 		cfb_fillrect(info, region);
 		return;
 	}
 
-	radeon_fixup_offset(rinfo);
-
 	vxres = info->var.xres_virtual;
 	vyres = info->var.yres_virtual;
 
@@ -91,6 +90,10 @@ void radeonfb_fillrect(struct fb_info *info, const struct fb_fillrect *region)
 	if(modded.dx + modded.width  > vxres) modded.width  = vxres - modded.dx;
 	if(modded.dy + modded.height > vyres) modded.height = vyres - modded.dy;
 
+	if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
+	    info->fix.visual == FB_VISUAL_DIRECTCOLOR )
+		modded.color = ((u32 *) (info->pseudo_palette))[region->color];
+
 	radeonfb_prim_fillrect(rinfo, &modded);
 }
 
@@ -109,22 +112,22 @@ static void radeonfb_prim_copyarea(struct radeonfb_info *rinfo,
 	if ( xdir < 0 ) { sx += w-1; dx += w-1; }
 	if ( ydir < 0 ) { sy += h-1; dy += h-1; }
 
-	radeon_fifo_wait(3);
-	OUTREG(DP_GUI_MASTER_CNTL,
-		rinfo->dp_gui_master_cntl /* i.e. GMC_DST_32BPP */
-		| GMC_BRUSH_NONE
-		| GMC_SRC_DSTCOLOR
-		| ROP3_S 
-		| DP_SRC_SOURCE_MEMORY );
-	OUTREG(DP_WRITE_MSK, 0xffffffff);
-	OUTREG(DP_CNTL, (xdir>=0 ? DST_X_LEFT_TO_RIGHT : 0)
-			| (ydir>=0 ? DST_Y_TOP_TO_BOTTOM : 0));
-
-	radeon_fifo_wait(2);
+	radeonfb_set_creg(rinfo, DP_GUI_MASTER_CNTL, &rinfo->dp_gui_mc_cache,
+			  rinfo->dp_gui_mc_base |
+			  GMC_BRUSH_NONE |
+			  GMC_SRC_DATATYPE_COLOR |
+			  ROP3_S |
+			  DP_SRC_SOURCE_MEMORY);
+	radeonfb_set_creg(rinfo, DP_CNTL, &rinfo->dp_cntl_cache,
+			  (xdir>=0 ? DST_X_LEFT_TO_RIGHT : 0) |
+			  (ydir>=0 ? DST_Y_TOP_TO_BOTTOM : 0));
+
+#if FLUSH_CACHE_WORKAROUND
+	radeon_fifo_wait(rinfo, 2);
 	OUTREG(DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL);
 	OUTREG(WAIT_UNTIL, (WAIT_2D_IDLECLEAN | WAIT_DMA_GUI_IDLE));
-
-	radeon_fifo_wait(3);
+#endif
+	radeon_fifo_wait(rinfo, 3);
 	OUTREG(SRC_Y_X, (sy << 16) | sx);
 	OUTREG(DST_Y_X, (dy << 16) | dx);
 	OUTREG(DST_HEIGHT_WIDTH, (h << 16) | w);
@@ -143,15 +146,14 @@ void radeonfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
 	modded.width  = area->width;
 	modded.height = area->height;
   
-	if (info->state != FBINFO_STATE_RUNNING)
+	WARN_ON(rinfo->gfx_mode);
+	if (info->state != FBINFO_STATE_RUNNING || rinfo->gfx_mode)
 		return;
 	if (info->flags & FBINFO_HWACCEL_DISABLED) {
 		cfb_copyarea(info, area);
 		return;
 	}
 
-	radeon_fixup_offset(rinfo);
-
 	vxres = info->var.xres_virtual;
 	vyres = info->var.yres_virtual;
 
@@ -168,13 +170,112 @@ void radeonfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
 	radeonfb_prim_copyarea(rinfo, &modded);
 }
 
+static void radeonfb_prim_imageblit(struct radeonfb_info *rinfo,
+				    const struct fb_image *image,
+				    u32 fg, u32 bg)
+{
+	unsigned int src_bytes, dwords;
+	u32 *bits;
+
+	radeonfb_set_creg(rinfo, DP_GUI_MASTER_CNTL, &rinfo->dp_gui_mc_cache,
+			  rinfo->dp_gui_mc_base |
+			  GMC_BRUSH_NONE |
+			  GMC_SRC_DATATYPE_MONO_FG_BG |
+			  ROP3_S |
+			  GMC_BYTE_ORDER_MSB_TO_LSB |
+			  DP_SRC_SOURCE_HOST_DATA);
+	radeonfb_set_creg(rinfo, DP_CNTL, &rinfo->dp_cntl_cache,
+			  DST_X_LEFT_TO_RIGHT | DST_Y_TOP_TO_BOTTOM);
+	radeonfb_set_creg(rinfo, DP_SRC_FRGD_CLR, &rinfo->dp_src_fg_cache, fg);
+	radeonfb_set_creg(rinfo, DP_SRC_BKGD_CLR, &rinfo->dp_src_bg_cache, bg);
+
+	radeon_fifo_wait(rinfo, 1);
+	OUTREG(DST_Y_X, (image->dy << 16) | image->dx);
+
+	/* Ensure the dst cache is flushed and the engine idle before
+	 * issuing the operation.
+	 *
+	 * This works around engine lockups on some cards
+	 */
+#if FLUSH_CACHE_WORKAROUND
+	radeon_fifo_wait(rinfo, 2);
+	OUTREG(DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL);
+	OUTREG(WAIT_UNTIL, (WAIT_2D_IDLECLEAN | WAIT_DMA_GUI_IDLE));
+#endif
+
+	/* X here pads width to a multiple of 32 and uses the clipper to
+	 * adjust the result. Is that really necessary ? Things seem to
+	 * work ok for me without that and the doco doesn't seem to imply
+	 * there is such a restriction.
+	 */
+	OUTREG(DST_WIDTH_HEIGHT, (image->width << 16) | image->height);
+
+	src_bytes = (((image->width * image->depth) + 7) / 8) * image->height;
+	dwords = (src_bytes + 3) / 4;
+	bits = (u32*)(image->data);
+
+	while(dwords >= 8) {
+		radeon_fifo_wait(rinfo, 8);
+#if BITS_PER_LONG == 64
+		__raw_writeq(*((u64 *)(bits)), rinfo->mmio_base + HOST_DATA0);
+		__raw_writeq(*((u64 *)(bits+2)), rinfo->mmio_base + HOST_DATA2);
+		__raw_writeq(*((u64 *)(bits+4)), rinfo->mmio_base + HOST_DATA4);
+		__raw_writeq(*((u64 *)(bits+6)), rinfo->mmio_base + HOST_DATA6);
+		bits += 8;
+#else
+		__raw_writel(*(bits++), rinfo->mmio_base + HOST_DATA0);
+		__raw_writel(*(bits++), rinfo->mmio_base + HOST_DATA1);
+		__raw_writel(*(bits++), rinfo->mmio_base + HOST_DATA2);
+		__raw_writel(*(bits++), rinfo->mmio_base + HOST_DATA3);
+		__raw_writel(*(bits++), rinfo->mmio_base + HOST_DATA4);
+		__raw_writel(*(bits++), rinfo->mmio_base + HOST_DATA5);
+		__raw_writel(*(bits++), rinfo->mmio_base + HOST_DATA6);
+		__raw_writel(*(bits++), rinfo->mmio_base + HOST_DATA7);
+#endif
+		dwords -= 8;
+	}
+	while(dwords--) {
+		radeon_fifo_wait(rinfo, 1);
+		__raw_writel(*(bits++), rinfo->mmio_base + HOST_DATA0);
+	}
+}
+
 void radeonfb_imageblit(struct fb_info *info, const struct fb_image *image)
 {
 	struct radeonfb_info *rinfo = info->par;
+	u32 fg, bg;
 
-	if (info->state != FBINFO_STATE_RUNNING)
+	WARN_ON(rinfo->gfx_mode);
+	if (info->state != FBINFO_STATE_RUNNING || rinfo->gfx_mode)
+		return;
+
+	if (!image->width || !image->height)
 		return;
-	radeon_engine_idle();
+
+	/* We only do 1 bpp color expansion for now */
+	if (info->flags & FBINFO_HWACCEL_DISABLED || image->depth != 1)
+		goto fallback;
+
+	/* Fallback if running out of the screen. We may do clipping
+	 * in the future */
+	if ((image->dx + image->width) > info->var.xres_virtual ||
+	    (image->dy + image->height) > info->var.yres_virtual)
+		goto fallback;
+
+	if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
+	    info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
+		fg = ((u32*)(info->pseudo_palette))[image->fg_color];
+		bg = ((u32*)(info->pseudo_palette))[image->bg_color];
+	} else {
+		fg = image->fg_color;
+		bg = image->bg_color;
+	}
+
+	radeonfb_prim_imageblit(rinfo, image, fg, bg);
+	return;
+
+ fallback:
+	radeon_engine_idle(rinfo);
 
 	cfb_imageblit(info, image);
 }
@@ -185,7 +286,8 @@ int radeonfb_sync(struct fb_info *info)
 
 	if (info->state != FBINFO_STATE_RUNNING)
 		return 0;
-	radeon_engine_idle();
+
+	radeon_engine_idle(rinfo);
 
 	return 0;
 }
@@ -261,9 +363,10 @@ void radeonfb_engine_init (struct radeonfb_info *rinfo)
 	/* disable 3D engine */
 	OUTREG(RB3D_CNTL, 0);
 
+	rinfo->fifo_free = 0;
 	radeonfb_engine_reset(rinfo);
 
-	radeon_fifo_wait (1);
+	radeon_fifo_wait(rinfo, 1);
 	if (IS_R300_VARIANT(rinfo)) {
 		OUTREG(RB2D_DSTCACHE_MODE, INREG(RB2D_DSTCACHE_MODE) |
 		       RB2D_DC_AUTOFLUSH_ENABLE |
@@ -277,7 +380,7 @@ void radeonfb_engine_init (struct radeonfb_info *rinfo)
 		OUTREG(RB2D_DSTCACHE_MODE, 0);
 	}
 
-	radeon_fifo_wait (3);
+	radeon_fifo_wait(rinfo, 3);
 	/* We re-read MC_FB_LOCATION from card as it can have been
 	 * modified by XFree drivers (ouch !)
 	 */
@@ -288,41 +391,57 @@ void radeonfb_engine_init (struct radeonfb_info *rinfo)
 	OUTREG(DST_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
 	OUTREG(SRC_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
 
-	radeon_fifo_wait (1);
-#if defined(__BIG_ENDIAN)
+	radeon_fifo_wait(rinfo, 1);
+#ifdef __BIG_ENDIAN
 	OUTREGP(DP_DATATYPE, HOST_BIG_ENDIAN_EN, ~HOST_BIG_ENDIAN_EN);
 #else
 	OUTREGP(DP_DATATYPE, 0, ~HOST_BIG_ENDIAN_EN);
 #endif
-	radeon_fifo_wait (2);
+	radeon_fifo_wait(rinfo, 2);
 	OUTREG(DEFAULT_SC_TOP_LEFT, 0);
 	OUTREG(DEFAULT_SC_BOTTOM_RIGHT, (DEFAULT_SC_RIGHT_MAX |
 					 DEFAULT_SC_BOTTOM_MAX));
 
+	/* set default DP_GUI_MASTER_CNTL */
 	temp = radeon_get_dstbpp(rinfo->depth);
-	rinfo->dp_gui_master_cntl = ((temp << 8) | GMC_CLR_CMP_CNTL_DIS);
+	rinfo->dp_gui_mc_base = ((temp << 8) | GMC_CLR_CMP_CNTL_DIS);
 
-	radeon_fifo_wait (1);
-	OUTREG(DP_GUI_MASTER_CNTL, (rinfo->dp_gui_master_cntl |
-				    GMC_BRUSH_SOLID_COLOR |
-				    GMC_SRC_DATATYPE_COLOR));
+	rinfo->dp_gui_mc_cache = rinfo->dp_gui_mc_base |
+		GMC_BRUSH_SOLID_COLOR |
+		GMC_SRC_DATATYPE_COLOR;
+	radeon_fifo_wait(rinfo, 1);
+	OUTREG(DP_GUI_MASTER_CNTL, rinfo->dp_gui_mc_cache);
 
-	radeon_fifo_wait (7);
 
 	/* clear line drawing regs */
+	radeon_fifo_wait(rinfo, 2);
 	OUTREG(DST_LINE_START, 0);
 	OUTREG(DST_LINE_END, 0);
 
-	/* set brush color regs */
-	OUTREG(DP_BRUSH_FRGD_CLR, 0xffffffff);
-	OUTREG(DP_BRUSH_BKGD_CLR, 0x00000000);
-
-	/* set source color regs */
-	OUTREG(DP_SRC_FRGD_CLR, 0xffffffff);
-	OUTREG(DP_SRC_BKGD_CLR, 0x00000000);
+	/* set brush and source color regs */
+	rinfo->dp_brush_fg_cache = 0xffffffff;
+	rinfo->dp_brush_bg_cache = 0x00000000;
+	rinfo->dp_src_fg_cache = 0xffffffff;
+	rinfo->dp_src_bg_cache = 0x00000000;
+	radeon_fifo_wait(rinfo, 4);
+	OUTREG(DP_BRUSH_FRGD_CLR, rinfo->dp_brush_fg_cache);
+	OUTREG(DP_BRUSH_BKGD_CLR, rinfo->dp_brush_bg_cache);
+	OUTREG(DP_SRC_FRGD_CLR, rinfo->dp_src_fg_cache);
+	OUTREG(DP_SRC_BKGD_CLR, rinfo->dp_src_bg_cache);
+
+	/* Default direction */
+	rinfo->dp_cntl_cache = DST_X_LEFT_TO_RIGHT | DST_Y_TOP_TO_BOTTOM;
+	radeon_fifo_wait(rinfo, 1);
+	OUTREG(DP_CNTL, rinfo->dp_cntl_cache);
 
 	/* default write mask */
+	radeon_fifo_wait(rinfo, 1);
 	OUTREG(DP_WRITE_MSK, 0xffffffff);
 
-	radeon_engine_idle ();
+	/* Default to no swapping of host data */
+	radeon_fifo_wait(rinfo, 1);
+	OUTREG(RBBM_GUICNTL, RBBM_GUICNTL_HOST_DATA_SWAP_NONE);
+
+	/* Make sure it's settled */
+	radeon_engine_idle(rinfo);
 }
diff --git a/drivers/video/aty/radeon_backlight.c b/drivers/video/aty/radeon_backlight.c
index 1a056ad..f343ba8 100644
--- a/drivers/video/aty/radeon_backlight.c
+++ b/drivers/video/aty/radeon_backlight.c
@@ -66,7 +66,7 @@ static int radeon_bl_update_status(struct backlight_device *bd)
 		level = bd->props.brightness;
 
 	del_timer_sync(&rinfo->lvds_timer);
-	radeon_engine_idle();
+	radeon_engine_idle(rinfo);
 
 	lvds_gen_cntl = INREG(LVDS_GEN_CNTL);
 	if (level > 0) {
diff --git a/drivers/video/aty/radeon_base.c b/drivers/video/aty/radeon_base.c
index d0f1a7f..9a5821c 100644
--- a/drivers/video/aty/radeon_base.c
+++ b/drivers/video/aty/radeon_base.c
@@ -852,7 +852,6 @@ static int radeonfb_pan_display (struct fb_var_screeninfo *var,
         if (rinfo->asleep)
         	return 0;
 
-	radeon_fifo_wait(2);
         OUTREG(CRTC_OFFSET, ((var->yoffset * var->xres_virtual + var->xoffset)
 			     * var->bits_per_pixel / 8) & ~7);
         return 0;
@@ -882,7 +881,6 @@ static int radeonfb_ioctl (struct fb_info *info, unsigned int cmd,
 			if (rc)
 				return rc;
 
-			radeon_fifo_wait(2);
 			if (value & 0x01) {
 				tmp = INREG(LVDS_GEN_CNTL);
 
@@ -940,7 +938,7 @@ int radeon_screen_blank(struct radeonfb_info *rinfo, int blank, int mode_switch)
 	if (rinfo->lock_blank)
 		return 0;
 
-	radeon_engine_idle();
+	radeon_engine_idle(rinfo);
 
 	val = INREG(CRTC_EXT_CNTL);
         val &= ~(CRTC_DISPLAY_DIS | CRTC_HSYNC_DIS |
@@ -1048,7 +1046,7 @@ static int radeonfb_blank (int blank, struct fb_info *info)
 
 	if (rinfo->asleep)
 		return 0;
-		
+
 	return radeon_screen_blank(rinfo, blank, 0);
 }
 
@@ -1074,8 +1072,6 @@ static int radeon_setcolreg (unsigned regno, unsigned red, unsigned green,
         pindex = regno;
 
         if (!rinfo->asleep) {
-		radeon_fifo_wait(9);
-
 		if (rinfo->bpp == 16) {
 			pindex = regno * 8;
 
@@ -1244,8 +1240,6 @@ static void radeon_write_pll_regs(struct radeonfb_info *rinfo, struct radeon_reg
 {
 	int i;
 
-	radeon_fifo_wait(20);
-
 	/* Workaround from XFree */
 	if (rinfo->is_mobility) {
 	        /* A temporal workaround for the occational blanking on certain laptop
@@ -1341,7 +1335,7 @@ static void radeon_lvds_timer_func(unsigned long data)
 {
 	struct radeonfb_info *rinfo = (struct radeonfb_info *)data;
 
-	radeon_engine_idle();
+	radeon_engine_idle(rinfo);
 
 	OUTREG(LVDS_GEN_CNTL, rinfo->pending_lvds_gen_cntl);
 }
@@ -1359,10 +1353,11 @@ void radeon_write_mode (struct radeonfb_info *rinfo, struct radeon_regs *mode,
 	if (nomodeset)
 		return;
 
+	radeon_engine_idle(rinfo);
+
 	if (!regs_only)
 		radeon_screen_blank(rinfo, FB_BLANK_NORMAL, 0);
 
-	radeon_fifo_wait(31);
 	for (i=0; i<10; i++)
 		OUTREG(common_regs[i].reg, common_regs[i].val);
 
@@ -1390,7 +1385,6 @@ void radeon_write_mode (struct radeonfb_info *rinfo, struct radeon_regs *mode,
 	radeon_write_pll_regs(rinfo, mode);
 
 	if ((primary_mon == MT_DFP) || (primary_mon == MT_LCD)) {
-		radeon_fifo_wait(10);
 		OUTREG(FP_CRTC_H_TOTAL_DISP, mode->fp_crtc_h_total_disp);
 		OUTREG(FP_CRTC_V_TOTAL_DISP, mode->fp_crtc_v_total_disp);
 		OUTREG(FP_H_SYNC_STRT_WID, mode->fp_h_sync_strt_wid);
@@ -1405,7 +1399,6 @@ void radeon_write_mode (struct radeonfb_info *rinfo, struct radeon_regs *mode,
 	if (!regs_only)
 		radeon_screen_blank(rinfo, FB_BLANK_UNBLANK, 0);
 
-	radeon_fifo_wait(2);
 	OUTPLL(VCLK_ECP_CNTL, mode->vclk_ecp_cntl);
 	
 	return;
@@ -1556,7 +1549,7 @@ static int radeonfb_set_par(struct fb_info *info)
 	/* We always want engine to be idle on a mode switch, even
 	 * if we won't actually change the mode
 	 */
-	radeon_engine_idle();
+	radeon_engine_idle(rinfo);
 
 	hSyncStart = mode->xres + mode->right_margin;
 	hSyncEnd = hSyncStart + mode->hsync_len;
@@ -1851,7 +1844,6 @@ static int radeonfb_set_par(struct fb_info *info)
 	return 0;
 }
 
-
 static struct fb_ops radeonfb_ops = {
 	.owner			= THIS_MODULE,
 	.fb_check_var		= radeonfb_check_var,
@@ -1875,6 +1867,7 @@ static int __devinit radeon_set_fbinfo (struct radeonfb_info *rinfo)
 	info->par = rinfo;
 	info->pseudo_palette = rinfo->pseudo_palette;
 	info->flags = FBINFO_DEFAULT
+		    | FBINFO_HWACCEL_IMAGEBLIT
 		    | FBINFO_HWACCEL_COPYAREA
 		    | FBINFO_HWACCEL_FILLRECT
 		    | FBINFO_HWACCEL_XPAN
@@ -2006,7 +1999,6 @@ static void radeon_identify_vram(struct radeonfb_info *rinfo)
           u32 tom = INREG(NB_TOM);
           tmp = ((((tom >> 16) - (tom & 0xffff) + 1) << 6) * 1024);
 
- 		radeon_fifo_wait(6);
           OUTREG(MC_FB_LOCATION, tom);
           OUTREG(DISPLAY_BASE_ADDR, (tom & 0xffff) << 16);
           OUTREG(CRTC2_DISPLAY_BASE_ADDR, (tom & 0xffff) << 16);
diff --git a/drivers/video/aty/radeon_pm.c b/drivers/video/aty/radeon_pm.c
index 675abda..3df5015 100644
--- a/drivers/video/aty/radeon_pm.c
+++ b/drivers/video/aty/radeon_pm.c
@@ -2653,9 +2653,9 @@ int radeonfb_pci_suspend(struct pci_dev *pdev, pm_message_t mesg)
 
 	if (!(info->flags & FBINFO_HWACCEL_DISABLED)) {
 		/* Make sure engine is reset */
-		radeon_engine_idle();
+		radeon_engine_idle(rinfo);
 		radeonfb_engine_reset(rinfo);
-		radeon_engine_idle();
+		radeon_engine_idle(rinfo);
 	}
 
 	/* Blank display and LCD */
@@ -2767,7 +2767,7 @@ int radeonfb_pci_resume(struct pci_dev *pdev)
 
 		rinfo->asleep = 0;
 	} else
-		radeon_engine_idle();
+		radeon_engine_idle(rinfo);
 
 	/* Restore display & engine */
 	radeon_write_mode (rinfo, &rinfo->state, 1);
diff --git a/drivers/video/aty/radeonfb.h b/drivers/video/aty/radeonfb.h
index 3ea1b00..ea0b5b4 100644
--- a/drivers/video/aty/radeonfb.h
+++ b/drivers/video/aty/radeonfb.h
@@ -336,7 +336,15 @@ struct radeonfb_info {
 	int			mon2_type;
 	u8		        *mon2_EDID;
 
-	u32			dp_gui_master_cntl;
+	/* accel bits */
+	u32			dp_gui_mc_base;
+	u32			dp_gui_mc_cache;
+	u32			dp_cntl_cache;
+	u32			dp_brush_fg_cache;
+	u32			dp_brush_bg_cache;
+	u32			dp_src_fg_cache;
+	u32			dp_src_bg_cache;
+	u32			fifo_free;
 
 	struct pll_info		pll;
 
@@ -348,6 +356,7 @@ struct radeonfb_info {
 	int			lock_blank;
 	int			dynclk;
 	int			no_schedule;
+	int 			gfx_mode;
 	enum radeon_pm_mode	pm_mode;
 	reinit_function_ptr     reinit_func;
 
@@ -392,8 +401,14 @@ static inline void _radeon_msleep(struct radeonfb_info *rinfo, unsigned long ms)
 #define OUTREG8(addr,val)	writeb(val, (rinfo->mmio_base)+addr)
 #define INREG16(addr)		readw((rinfo->mmio_base)+addr)
 #define OUTREG16(addr,val)	writew(val, (rinfo->mmio_base)+addr)
+
+#ifdef CONFIG_PPC
+#define INREG(addr)	     	({ eieio(); ld_le32(rinfo->mmio_base+(addr)); })
+#define OUTREG(addr,val)	do { eieio(); st_le32(rinfo->mmio_base+(addr),(val)); } while(0)
+#else
 #define INREG(addr)		readl((rinfo->mmio_base)+addr)
 #define OUTREG(addr,val)	writel(val, (rinfo->mmio_base)+addr)
+#endif
 
 static inline void _OUTREGP(struct radeonfb_info *rinfo, u32 addr,
 		       u32 val, u32 mask)
@@ -535,17 +550,7 @@ static inline u32 radeon_get_dstbpp(u16 depth)
  * 2D Engine helper routines
  */
 
-static inline void _radeon_fifo_wait(struct radeonfb_info *rinfo, int entries)
-{
-	int i;
-
-	for (i=0; i<2000000; i++) {
-		if ((INREG(RBBM_STATUS) & 0x7f) >= entries)
-			return;
-		udelay(1);
-	}
-	printk(KERN_ERR "radeonfb: FIFO Timeout !\n");
-}
+extern void radeon_fifo_update_and_wait(struct radeonfb_info *rinfo, int entries);
 
 static inline void radeon_engine_flush (struct radeonfb_info *rinfo)
 {
@@ -558,7 +563,7 @@ static inline void radeon_engine_flush (struct radeonfb_info *rinfo)
 	/* Ensure FIFO is empty, ie, make sure the flush commands
 	 * has reached the cache
 	 */
-	_radeon_fifo_wait (rinfo, 64);
+	radeon_fifo_update_and_wait(rinfo, 64);
 
 	/* Wait for the flush to complete */
 	for (i=0; i < 2000000; i++) {
@@ -570,12 +575,12 @@ static inline void radeon_engine_flush (struct radeonfb_info *rinfo)
 }
 
 
-static inline void _radeon_engine_idle(struct radeonfb_info *rinfo)
+static inline void radeon_engine_idle(struct radeonfb_info *rinfo)
 {
 	int i;
 
 	/* ensure FIFO is empty before waiting for idle */
-	_radeon_fifo_wait (rinfo, 64);
+	radeon_fifo_update_and_wait (rinfo, 64);
 
 	for (i=0; i<2000000; i++) {
 		if (((INREG(RBBM_STATUS) & GUI_ACTIVE)) == 0) {
@@ -588,8 +593,6 @@ static inline void _radeon_engine_idle(struct radeonfb_info *rinfo)
 }
 
 
-#define radeon_engine_idle()		_radeon_engine_idle(rinfo)
-#define radeon_fifo_wait(entries)	_radeon_fifo_wait(rinfo,entries)
 #define radeon_msleep(ms)		_radeon_msleep(rinfo,ms)
 
 
@@ -619,6 +622,7 @@ extern void radeonfb_imageblit(struct fb_info *p, const struct fb_image *image);
 extern int radeonfb_sync(struct fb_info *info);
 extern void radeonfb_engine_init (struct radeonfb_info *rinfo);
 extern void radeonfb_engine_reset(struct radeonfb_info *rinfo);
+extern void radeon_fixup_mem_offset(struct radeonfb_info *rinfo);
 
 /* Other functions */
 extern int radeon_screen_blank(struct radeonfb_info *rinfo, int blank, int mode_switch);