From 29ac7b1fe364a4be1db7e22d2b400bef04fc240d Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@linux.ie>
Date: Tue, 3 Apr 2007 21:20:00 +1000
Subject: radeon: add setup for PCIE GART ttm

---
 linux-core/ati_pcigart.c   | 32 +++++++++++++++++++++++++++++++-
 linux-core/drmP.h          |  8 ++++++++
 linux-core/radeon_buffer.c | 30 ++++++++++++++++++++----------
 3 files changed, 59 insertions(+), 11 deletions(-)

diff --git a/linux-core/ati_pcigart.c b/linux-core/ati_pcigart.c
index f3f91129..108e1875 100644
--- a/linux-core/ati_pcigart.c
+++ b/linux-core/ati_pcigart.c
@@ -239,8 +239,22 @@ static int ati_pcigart_populate(drm_ttm_backend_t *backend,
 				struct page **pages)
 {
 	ati_pcigart_ttm_priv *atipci_priv = (ati_pcigart_ttm_priv *)backend->private;	
+	struct page **cur_page, **last_page = pages + num_pages;
+	struct ati_pcigart_memory *mem;
 
-	return -1;
+	DRM_DEBUG("%d\n", num_pages);
+	if (drm_alloc_memctl(num_pages * sizeof(void *)))
+		return -1;
+
+	mem = drm_alloc(sizeof(struct ati_pcigart_memory), DRM_MEM_MAPPINGS);
+	if (!mem) {
+		drm_free_memctl(num_pages * sizeof(void *));
+		return -1;
+	}
+
+	mem->page_count = num_pages;
+	atipci_priv->mem = mem;
+	return 0;
 }
 
 static int ati_pcigart_bind_ttm(drm_ttm_backend_t *backend,
@@ -249,6 +263,7 @@ static int ati_pcigart_bind_ttm(drm_ttm_backend_t *backend,
 {
 	ati_pcigart_ttm_priv *atipci_priv = (ati_pcigart_ttm_priv *)backend->private;
 
+	DRM_DEBUG("\n");
 	return -1;
 }
 
@@ -256,12 +271,24 @@ static int ati_pcigart_unbind_ttm(drm_ttm_backend_t *backend)
 {
 	ati_pcigart_ttm_priv *atipci_priv = (ati_pcigart_ttm_priv *)backend->private;
 	
+	DRM_DEBUG("\n");
 	return -1;
 }
 
 static void ati_pcigart_clear_ttm(drm_ttm_backend_t *backend)
 {
 	ati_pcigart_ttm_priv *atipci_priv = (ati_pcigart_ttm_priv *)backend->private;
+	struct ati_pcigart_memory *mem = atipci_priv->mem;
+
+	DRM_DEBUG("\n");	
+	if (mem) {
+		unsigned long num_pages = mem->page_count;
+		backend->unbind(backend);
+		/* free test */
+		drm_free(mem, sizeof(struct ati_pcigart_memory), DRM_MEM_MAPPINGS);
+		drm_free_memctl(num_pages * sizeof(void *));
+	}
+	atipci_priv->mem = NULL;
 }
 
 static void ati_pcigart_destroy_ttm(drm_ttm_backend_t *backend)
@@ -272,6 +299,9 @@ static void ati_pcigart_destroy_ttm(drm_ttm_backend_t *backend)
 		DRM_DEBUG("\n");
 		atipci_priv = (ati_pcigart_ttm_priv *)backend->private;
 		if (atipci_priv) {
+			if (atipci_priv->mem) {
+				backend->clear(backend);
+			}
 			drm_ctl_free(atipci_priv, sizeof(*atipci_priv), DRM_MEM_MAPPINGS);
 			backend->private = NULL;
 		}
diff --git a/linux-core/drmP.h b/linux-core/drmP.h
index b6da6926..3ddd405f 100644
--- a/linux-core/drmP.h
+++ b/linux-core/drmP.h
@@ -840,8 +840,16 @@ typedef struct drm_agp_ttm_priv {
 } drm_agp_ttm_priv;
 #endif
 
+#define ATI_PCIGART_FLAG_VMALLOC 1
+struct ati_pcigart_memory {
+	size_t page_count;
+	unsigned long *memory;
+	int flags;
+};
+
 typedef struct ati_pcigart_ttm_priv {
 	int populated;
+	struct ati_pcigart_memory *mem;
 } ati_pcigart_ttm_priv;
 
 static __inline__ int drm_core_check_feature(struct drm_device *dev,
diff --git a/linux-core/radeon_buffer.c b/linux-core/radeon_buffer.c
index d5a1456a..dd387604 100644
--- a/linux-core/radeon_buffer.c
+++ b/linux-core/radeon_buffer.c
@@ -80,6 +80,8 @@ uint32_t radeon_evict_mask(drm_buffer_object_t *bo)
 int radeon_init_mem_type(drm_device_t * dev, uint32_t type,
 			 drm_mem_type_manager_t * man)
 {
+	drm_radeon_private_t *dev_priv = dev->dev_private;
+
 	switch (type) {
 	case DRM_BO_MEM_LOCAL:
 		man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE |
@@ -87,17 +89,25 @@ int radeon_init_mem_type(drm_device_t * dev, uint32_t type,
 		man->drm_bus_maptype = 0;
 		break;
 	case DRM_BO_MEM_TT:
-		if (!(drm_core_has_AGP(dev) && dev->agp)) {
-			DRM_ERROR("AGP is not enabled for memory type %u\n",
-				  (unsigned)type);
-			return -EINVAL;
+		if (dev_priv->flags & RADEON_IS_AGP) {
+			if (!(drm_core_has_AGP(dev) && dev->agp)) {
+				DRM_ERROR("AGP is not enabled for memory type %u\n",
+					  (unsigned)type);
+				return -EINVAL;
+			}
+			man->io_offset = dev->agp->agp_info.aper_base;
+			man->io_size = dev->agp->agp_info.aper_size * 1024 * 1024;
+			man->io_addr = NULL;
+			man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE |
+				_DRM_FLAG_MEMTYPE_CSELECT | _DRM_FLAG_NEEDS_IOREMAP;
+			man->drm_bus_maptype = _DRM_AGP;
+		} else {
+			man->io_offset = 0;
+			man->io_size = dev_priv->gart_size;
+			man->io_addr = NULL;
+			man->flags = _DRM_FLAG_MEMTYPE_CSELECT | _DRM_FLAG_MEMTYPE_MAPPABLE;
+			man->drm_bus_maptype = _DRM_SCATTER_GATHER;
 		}
-		man->io_offset = dev->agp->agp_info.aper_base;
-		man->io_size = dev->agp->agp_info.aper_size * 1024 * 1024;
-		man->io_addr = NULL;
-		man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE |
-		    _DRM_FLAG_MEMTYPE_CSELECT | _DRM_FLAG_NEEDS_IOREMAP;
-		man->drm_bus_maptype = _DRM_AGP;
 		break;
 	default:
 		DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
-- 
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