Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm: fix for non-coherent DMA PowerPC
drm: radeon: fix sparse integer as NULL pointer warnings in radeon_mem.c
drm/i915: fix oops on agp=off
drm/r300: fix bug in r300 userspace hardware wait emission

drivers/char/drm/ati_pcigart.c

···
 		}
 	}
 
+	if (gart_info->gart_table_location == DRM_ATI_GART_MAIN)
+		dma_sync_single_for_device(&dev->pdev->dev,
+					   bus_address,
+					   max_pages * sizeof(u32),
+					   PCI_DMA_TODEVICE);
+
 	ret = 1;
 
 #if defined(__i386__) || defined(__x86_64__)

drivers/char/drm/drm_scatter.c

···
 
 #define DEBUG_SCATTER 0
 
+static inline void *drm_vmalloc_dma(unsigned long size)
+{
+#if defined(__powerpc__) && defined(CONFIG_NOT_COHERENT_CACHE)
+	return __vmalloc(size, GFP_KERNEL, PAGE_KERNEL | _PAGE_NO_CACHE);
+#else
+	return vmalloc_32(size);
+#endif
+}
+
 void drm_sg_cleanup(struct drm_sg_mem * entry)
 {
 	struct page *page;
···
 	}
 	memset((void *)entry->busaddr, 0, pages * sizeof(*entry->busaddr));
 
-	entry->virtual = vmalloc_32(pages << PAGE_SHIFT);
+	entry->virtual = drm_vmalloc_dma(pages << PAGE_SHIFT);
 	if (!entry->virtual) {
 		drm_free(entry->busaddr,
 			 entry->pages * sizeof(*entry->busaddr), DRM_MEM_PAGES);

drivers/char/drm/drm_vm.c

···
 	pgprot_val(tmp) |= _PAGE_NO_CACHE;
 	if (map_type == _DRM_REGISTERS)
 		pgprot_val(tmp) |= _PAGE_GUARDED;
-#endif
-#if defined(__ia64__)
+#elif defined(__ia64__)
 	if (efi_range_is_wc(vma->vm_start, vma->vm_end -
 				    vma->vm_start))
 		tmp = pgprot_writecombine(tmp);
 	else
 		tmp = pgprot_noncached(tmp);
+#elif defined(__sparc__)
+	tmp = pgprot_noncached(tmp);
+#endif
+	return tmp;
+}
+
+static pgprot_t drm_dma_prot(uint32_t map_type, struct vm_area_struct *vma)
+{
+	pgprot_t tmp = vm_get_page_prot(vma->vm_flags);
+
+#if defined(__powerpc__) && defined(CONFIG_NOT_COHERENT_CACHE)
+	tmp |= _PAGE_NO_CACHE;
 #endif
 	return tmp;
 }
···
 		offset = dev->driver->get_reg_ofs(dev);
 		vma->vm_flags |= VM_IO;	/* not in core dump */
 		vma->vm_page_prot = drm_io_prot(map->type, vma);
-#ifdef __sparc__
-		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-#endif
 		if (io_remap_pfn_range(vma, vma->vm_start,
 				       (map->offset + offset) >> PAGE_SHIFT,
 				       vma->vm_end - vma->vm_start,
···
 		    page_to_pfn(virt_to_page(map->handle)),
 		    vma->vm_end - vma->vm_start, vma->vm_page_prot))
 			return -EAGAIN;
+		vma->vm_page_prot = drm_dma_prot(map->type, vma);
 	/* fall through to _DRM_SHM */
 	case _DRM_SHM:
 		vma->vm_ops = &drm_vm_shm_ops;
···
 		/* Don't let this area swap.  Change when
 		   DRM_KERNEL advisory is supported. */
 		vma->vm_flags |= VM_RESERVED;
+		vma->vm_page_prot = drm_dma_prot(map->type, vma);
 		break;
 	case _DRM_SCATTER_GATHER:
 		vma->vm_ops = &drm_vm_sg_ops;

drivers/char/drm/i915_dma.c

···
 {
 	drm_i915_private_t *dev_priv = dev->dev_private;
 
+	if (!dev_priv)
+		return;
+
 	if (dev_priv->agp_heap)
 		i915_mem_takedown(&(dev_priv->agp_heap));
 

drivers/char/drm/r300_cmdbuf.c

···
 	buf->used = 0;
 }
 
+static void r300_cmd_wait(drm_radeon_private_t * dev_priv,
+			  drm_r300_cmd_header_t header)
+{
+	u32 wait_until;
+	RING_LOCALS;
+
+	if (!header.wait.flags)
+		return;
+
+	wait_until = 0;
+
+	switch(header.wait.flags) {
+	case R300_WAIT_2D:
+		wait_until = RADEON_WAIT_2D_IDLE;
+		break;
+	case R300_WAIT_3D:
+		wait_until = RADEON_WAIT_3D_IDLE;
+		break;
+	case R300_NEW_WAIT_2D_3D:
+		wait_until = RADEON_WAIT_2D_IDLE|RADEON_WAIT_3D_IDLE;
+		break;
+	case R300_NEW_WAIT_2D_2D_CLEAN:
+		wait_until = RADEON_WAIT_2D_IDLE|RADEON_WAIT_2D_IDLECLEAN;
+		break;
+	case R300_NEW_WAIT_3D_3D_CLEAN:
+		wait_until = RADEON_WAIT_3D_IDLE|RADEON_WAIT_3D_IDLECLEAN;
+		break;
+	case R300_NEW_WAIT_2D_2D_CLEAN_3D_3D_CLEAN:
+		wait_until = RADEON_WAIT_2D_IDLE|RADEON_WAIT_2D_IDLECLEAN;
+		wait_until |= RADEON_WAIT_3D_IDLE|RADEON_WAIT_3D_IDLECLEAN;
+		break;
+	default:
+		return;
+	}
+
+	BEGIN_RING(2);
+	OUT_RING(CP_PACKET0(RADEON_WAIT_UNTIL, 0));
+	OUT_RING(wait_until);
+	ADVANCE_RING();
+}
+
 static int r300_scratch(drm_radeon_private_t *dev_priv,
 			drm_radeon_kcmd_buffer_t *cmdbuf,
 			drm_r300_cmd_header_t header)
···
 			break;
 
 		case R300_CMD_WAIT:
-			/* simple enough, we can do it here */
 			DRM_DEBUG("R300_CMD_WAIT\n");
-			if (header.wait.flags == 0)
-				break;	/* nothing to do */
-
-			{
-				RING_LOCALS;
-
-				BEGIN_RING(2);
-				OUT_RING(CP_PACKET0(RADEON_WAIT_UNTIL, 0));
-				OUT_RING((header.wait.flags & 0xf) << 14);
-				ADVANCE_RING();
-			}
+			r300_cmd_wait(dev_priv, header);
 			break;
 
 		case R300_CMD_SCRATCH:

drivers/char/drm/radeon_drm.h

···
 #define R300_CMD_WAIT			7
 #	define R300_WAIT_2D		0x1
 #	define R300_WAIT_3D		0x2
+/* these two defines are DOING IT WRONG - however
+ * we have userspace which relies on using these.
+ * The wait interface is backwards compat new 
+ * code should use the NEW_WAIT defines below
+ * THESE ARE NOT BIT FIELDS
+ */
 #	define R300_WAIT_2D_CLEAN	0x3
 #	define R300_WAIT_3D_CLEAN	0x4
+
+#	define R300_NEW_WAIT_2D_3D	0x3
+#	define R300_NEW_WAIT_2D_2D_CLEAN	0x4
+#	define R300_NEW_WAIT_3D_3D_CLEAN	0x6
+#	define R300_NEW_WAIT_2D_2D_CLEAN_3D_3D_CLEAN	0x8
+
 #define R300_CMD_SCRATCH		8
 
 typedef union {

drivers/char/drm/radeon_mem.c

···
 
 	list_for_each(p, heap) {
 		int start = (p->start + mask) & ~mask;
-		if (p->file_priv == 0 && start + size <= p->start + p->size)
+		if (p->file_priv == NULL && start + size <= p->start + p->size)
 			return split_block(p, start, size, file_priv);
 	}
 
···
 	/* Assumes a single contiguous range.  Needs a special file_priv in
 	 * 'heap' to stop it being subsumed.
 	 */
-	if (p->next->file_priv == 0) {
+	if (p->next->file_priv == NULL) {
 		struct mem_block *q = p->next;
 		p->size += q->size;
 		p->next = q->next;
···
 		drm_free(q, sizeof(*q), DRM_MEM_BUFS);
 	}
 
-	if (p->prev->file_priv == 0) {
+	if (p->prev->file_priv == NULL) {
 		struct mem_block *q = p->prev;
 		q->size += p->size;
 		q->next = p->next;
···
 	 * 'heap' to stop it being subsumed.
 	 */
 	list_for_each(p, heap) {
-		while (p->file_priv == 0 && p->next->file_priv == 0) {
+		while (p->file_priv == NULL && p->next->file_priv == NULL) {
 			struct mem_block *q = p->next;
 			p->size += q->size;
 			p->next = q->next;