Revert "radeonfb: accelerate imageblit and other improvements"

This reverts commit b1ee26bab14886350ba12a5c10cbc0696ac679bf, along with
the "fixes" for it that all just caused problems:

 - c4c6fa9891f3d1bcaae4f39fb751d5302965b566 "radeonfb: fix problem with
   color expansion & alignment"

 - f3179748a157c21d44d929fd3779421ebfbeaa93 "radeonfb: Disable new color
   expand acceleration unless explicitely enabled"

because even when disabled, it breaks for people. See

	http://bugzilla.kernel.org/show_bug.cgi?id=12191

for the latest example.

Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Krzysztof Halasa <khc@pm.waw.pl>
Cc: James Cloos <cloos@jhcloos.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: Jean-Luc Coulon <jean.luc.coulon@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

5 files changed, 122 insertions, 267 deletions

diff --git a/drivers/video/aty/radeon_accel.c b/drivers/video/aty/radeon_accel.c
index 8da5e5a..a469a3d 100644
--- a/drivers/video/aty/radeon_accel.c
+++ b/drivers/video/aty/radeon_accel.c
@@ -5,61 +5,61 @@
  * --dte
  */
 
-#define FLUSH_CACHE_WORKAROUND	1
-
-void radeon_fifo_update_and_wait(struct radeonfb_info *rinfo, int entries)
+static void radeon_fixup_offset(struct radeonfb_info *rinfo)
 {
-	int i;
+	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.
+	 */
 
-	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 */
-}
+	radeon_fifo_wait (1);
+	local_base = INREG(MC_FB_LOCATION) << 16;
+	if (local_base == rinfo->fb_local_base)
+		return;
 
-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);
-}
+	rinfo->fb_local_base = local_base;
 
-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);
+	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 void radeonfb_prim_fillrect(struct radeonfb_info *rinfo, 
 				   const struct fb_fillrect *region)
 {
-	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);
+	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);
 	OUTREG(DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL);
 	OUTREG(WAIT_UNTIL, (WAIT_2D_IDLECLEAN | WAIT_DMA_GUI_IDLE));
-#endif
-	radeon_fifo_wait(rinfo, 2);
+
+	radeon_fifo_wait(2);  
 	OUTREG(DST_Y_X, (region->dy << 16) | region->dx);
 	OUTREG(DST_WIDTH_HEIGHT, (region->width << 16) | region->height);
 }
@@ -70,14 +70,15 @@ void radeonfb_fillrect(struct fb_info *info, const struct fb_fillrect *region)
 	struct fb_fillrect modded;
 	int vxres, vyres;
   
-	WARN_ON(rinfo->gfx_mode);
-	if (info->state != FBINFO_STATE_RUNNING || rinfo->gfx_mode)
+	if (info->state != FBINFO_STATE_RUNNING)
 		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;
 
@@ -90,10 +91,6 @@ 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);
 }
 
@@ -112,22 +109,22 @@ 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; }
 
-	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);
+	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);
 	OUTREG(DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL);
 	OUTREG(WAIT_UNTIL, (WAIT_2D_IDLECLEAN | WAIT_DMA_GUI_IDLE));
-#endif
-	radeon_fifo_wait(rinfo, 3);
+
+	radeon_fifo_wait(3);
 	OUTREG(SRC_Y_X, (sy << 16) | sx);
 	OUTREG(DST_Y_X, (dy << 16) | dx);
 	OUTREG(DST_HEIGHT_WIDTH, (h << 16) | w);
@@ -146,14 +143,15 @@ void radeonfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
 	modded.width  = area->width;
 	modded.height = area->height;
   
-	WARN_ON(rinfo->gfx_mode);
-	if (info->state != FBINFO_STATE_RUNNING || rinfo->gfx_mode)
+	if (info->state != FBINFO_STATE_RUNNING)
 		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;
 
@@ -170,116 +168,13 @@ 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 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_DST_CLIP_LEAVE |
-			  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);
-
-	/* 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.
-	 */
-	radeon_fifo_wait(rinfo, 4);
-	OUTREG(SC_TOP_LEFT, (image->dy << 16) | image->dx);
-	OUTREG(SC_BOTTOM_RIGHT, ((image->dy + image->height) << 16) |
-	       (image->dx + image->width));
-	OUTREG(DST_Y_X, (image->dy << 16) | image->dx);
-
-	OUTREG(DST_HEIGHT_WIDTH, (image->height << 16) | ((image->width + 31) & ~31));
-
-	dwords = (image->width + 31) >> 5;
-	dwords *= image->height;
-	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;
 
-	WARN_ON(rinfo->gfx_mode);
-	if (info->state != FBINFO_STATE_RUNNING || rinfo->gfx_mode)
-		return;
-
-	if (!image->width || !image->height)
+	if (info->state != FBINFO_STATE_RUNNING)
 		return;
-
-	/* We only do 1 bpp color expansion for now */
-	if (!accel_cexp ||
-	    (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);
+	radeon_engine_idle();
 
 	cfb_imageblit(info, image);
 }
@@ -290,8 +185,7 @@ int radeonfb_sync(struct fb_info *info)
 
 	if (info->state != FBINFO_STATE_RUNNING)
 		return 0;
-
-	radeon_engine_idle(rinfo);
+	radeon_engine_idle();
 
 	return 0;
 }
@@ -367,10 +261,9 @@ 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(rinfo, 1);
+	radeon_fifo_wait (1);
 	if (IS_R300_VARIANT(rinfo)) {
 		OUTREG(RB2D_DSTCACHE_MODE, INREG(RB2D_DSTCACHE_MODE) |
 		       RB2D_DC_AUTOFLUSH_ENABLE |
@@ -384,7 +277,7 @@ void radeonfb_engine_init (struct radeonfb_info *rinfo)
 		OUTREG(RB2D_DSTCACHE_MODE, 0);
 	}
 
-	radeon_fifo_wait(rinfo, 3);
+	radeon_fifo_wait (3);
 	/* We re-read MC_FB_LOCATION from card as it can have been
 	 * modified by XFree drivers (ouch !)
 	 */
@@ -395,57 +288,41 @@ 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(rinfo, 1);
-#ifdef __BIG_ENDIAN
+	radeon_fifo_wait (1);
+#if defined(__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(rinfo, 2);
+	radeon_fifo_wait (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_mc_base = ((temp << 8) | GMC_CLR_CMP_CNTL_DIS);
+	rinfo->dp_gui_master_cntl = ((temp << 8) | GMC_CLR_CMP_CNTL_DIS);
 
-	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 (1);
+	OUTREG(DP_GUI_MASTER_CNTL, (rinfo->dp_gui_master_cntl |
+				    GMC_BRUSH_SOLID_COLOR |
+				    GMC_SRC_DATATYPE_COLOR));
 
+	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 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);
+	/* 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);
 
 	/* default write mask */
-	radeon_fifo_wait(rinfo, 1);
 	OUTREG(DP_WRITE_MSK, 0xffffffff);
 
-	/* 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);
+	radeon_engine_idle ();
 }
diff --git a/drivers/video/aty/radeon_backlight.c b/drivers/video/aty/radeon_backlight.c
index f343ba8..1a056ad 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(rinfo);
+	radeon_engine_idle();
 
 	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 d5b27f9..d0f1a7f 100644
--- a/drivers/video/aty/radeon_base.c
+++ b/drivers/video/aty/radeon_base.c
@@ -282,8 +282,6 @@ static int backlight = 1;
 static int backlight = 0;
 #endif
 
-int accel_cexp = 0;
-
 /*
  * prototypes
  */
@@ -854,6 +852,7 @@ 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;
@@ -883,6 +882,7 @@ 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 +940,7 @@ int radeon_screen_blank(struct radeonfb_info *rinfo, int blank, int mode_switch)
 	if (rinfo->lock_blank)
 		return 0;
 
-	radeon_engine_idle(rinfo);
+	radeon_engine_idle();
 
 	val = INREG(CRTC_EXT_CNTL);
         val &= ~(CRTC_DISPLAY_DIS | CRTC_HSYNC_DIS |
@@ -1048,7 +1048,7 @@ static int radeonfb_blank (int blank, struct fb_info *info)
 
 	if (rinfo->asleep)
 		return 0;
-
+		
 	return radeon_screen_blank(rinfo, blank, 0);
 }
 
@@ -1074,6 +1074,8 @@ 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;
 
@@ -1242,6 +1244,8 @@ 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
@@ -1337,7 +1341,7 @@ static void radeon_lvds_timer_func(unsigned long data)
 {
 	struct radeonfb_info *rinfo = (struct radeonfb_info *)data;
 
-	radeon_engine_idle(rinfo);
+	radeon_engine_idle();
 
 	OUTREG(LVDS_GEN_CNTL, rinfo->pending_lvds_gen_cntl);
 }
@@ -1355,11 +1359,10 @@ 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);
 
@@ -1387,6 +1390,7 @@ 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);
@@ -1401,6 +1405,7 @@ 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;
@@ -1551,7 +1556,7 @@ 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(rinfo);
+	radeon_engine_idle();
 
 	hSyncStart = mode->xres + mode->right_margin;
 	hSyncEnd = hSyncStart + mode->hsync_len;
@@ -1846,6 +1851,7 @@ 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,
@@ -1869,7 +1875,6 @@ 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
@@ -1877,7 +1882,6 @@ static int __devinit radeon_set_fbinfo (struct radeonfb_info *rinfo)
 	info->fbops = &radeonfb_ops;
 	info->screen_base = rinfo->fb_base;
 	info->screen_size = rinfo->mapped_vram;
-
 	/* Fill fix common fields */
 	strlcpy(info->fix.id, rinfo->name, sizeof(info->fix.id));
         info->fix.smem_start = rinfo->fb_base_phys;
@@ -1892,25 +1896,8 @@ static int __devinit radeon_set_fbinfo (struct radeonfb_info *rinfo)
         info->fix.mmio_len = RADEON_REGSIZE;
 	info->fix.accel = FB_ACCEL_ATI_RADEON;
 
-	/* Allocate colormap */
 	fb_alloc_cmap(&info->cmap, 256, 0);
 
-	/* Setup pixmap used for acceleration */
-#define PIXMAP_SIZE	(2048 * 4)
-
-	info->pixmap.addr = kmalloc(PIXMAP_SIZE, GFP_KERNEL);
-	if (!info->pixmap.addr) {
-		printk(KERN_ERR "radeonfb: Failed to allocate pixmap !\n");
-		noaccel = 1;
-		goto bail;
-	}
-	info->pixmap.size = PIXMAP_SIZE;
-	info->pixmap.flags = FB_PIXMAP_SYSTEM;
-	info->pixmap.scan_align = 4;
-	info->pixmap.buf_align = 4;
-	info->pixmap.access_align = 32;
-
-bail:
 	if (noaccel)
 		info->flags |= FBINFO_HWACCEL_DISABLED;
 
@@ -2019,6 +2006,7 @@ 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);
@@ -2522,8 +2510,6 @@ static int __init radeonfb_setup (char *options)
 		} else if (!strncmp(this_opt, "ignore_devlist", 14)) {
 			ignore_devlist = 1;
 #endif
-		} else if (!strncmp(this_opt, "accel_cexp", 12)) {
-			accel_cexp = 1;
 		} else
 			mode_option = this_opt;
 	}
@@ -2571,8 +2557,6 @@ module_param(monitor_layout, charp, 0);
 MODULE_PARM_DESC(monitor_layout, "Specify monitor mapping (like XFree86)");
 module_param(force_measure_pll, bool, 0);
 MODULE_PARM_DESC(force_measure_pll, "Force measurement of PLL (debug)");
-module_param(accel_cexp, bool, 0);
-MODULE_PARM_DESC(accel_cexp, "Use acceleration engine for color expansion");
 #ifdef CONFIG_MTRR
 module_param(nomtrr, bool, 0);
 MODULE_PARM_DESC(nomtrr, "bool: disable use of MTRR registers");
diff --git a/drivers/video/aty/radeon_pm.c b/drivers/video/aty/radeon_pm.c
index 3df5015..675abda 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(rinfo);
+		radeon_engine_idle();
 		radeonfb_engine_reset(rinfo);
-		radeon_engine_idle(rinfo);
+		radeon_engine_idle();
 	}
 
 	/* Blank display and LCD */
@@ -2767,7 +2767,7 @@ int radeonfb_pci_resume(struct pci_dev *pdev)
 
 		rinfo->asleep = 0;
 	} else
-		radeon_engine_idle(rinfo);
+		radeon_engine_idle();
 
 	/* 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 974ca6d..3ea1b00 100644
--- a/drivers/video/aty/radeonfb.h
+++ b/drivers/video/aty/radeonfb.h
@@ -336,15 +336,7 @@ struct radeonfb_info {
 	int			mon2_type;
 	u8		        *mon2_EDID;
 
-	/* 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;
+	u32			dp_gui_master_cntl;
 
 	struct pll_info		pll;
 
@@ -356,7 +348,6 @@ 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;
 
@@ -401,14 +392,8 @@ 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)
@@ -550,7 +535,17 @@ static inline u32 radeon_get_dstbpp(u16 depth)
  * 2D Engine helper routines
  */
 
-extern void radeon_fifo_update_and_wait(struct radeonfb_info *rinfo, int entries);
+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");
+}
 
 static inline void radeon_engine_flush (struct radeonfb_info *rinfo)
 {
@@ -563,7 +558,7 @@ 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_update_and_wait(rinfo, 64);
+	_radeon_fifo_wait (rinfo, 64);
 
 	/* Wait for the flush to complete */
 	for (i=0; i < 2000000; i++) {
@@ -575,12 +570,12 @@ 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_update_and_wait (rinfo, 64);
+	_radeon_fifo_wait (rinfo, 64);
 
 	for (i=0; i<2000000; i++) {
 		if (((INREG(RBBM_STATUS) & GUI_ACTIVE)) == 0) {
@@ -593,6 +588,8 @@ 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)
 
 
@@ -622,7 +619,6 @@ 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);
@@ -638,6 +634,4 @@ static inline void radeonfb_bl_init(struct radeonfb_info *rinfo) {}
 static inline void radeonfb_bl_exit(struct radeonfb_info *rinfo) {}
 #endif
 
-extern int accel_cexp;
-
 #endif /* __RADEONFB_H__ */