ttm: fix agp since ttm tt rework

ttm tt rework modified the way we allocate and populate the
ttm_tt structure, the AGP side was missing some bit to properly
work. Fix those and fix radeon and nouveau AGP support.

Tested on radeon only so far.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

4 files changed, 43 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 8cf4a48f872e..724b41a2b9e9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -1066,6 +1066,12 @@ nouveau_ttm_tt_populate(struct ttm_tt *ttm)
         dev_priv = nouveau_bdev(ttm->bdev);
         dev = dev_priv->dev;
 
+#if __OS_HAS_AGP
+        if (dev_priv->gart_info.type == NOUVEAU_GART_AGP) {
+                return ttm_agp_tt_populate(ttm);
+        }
+#endif
+
 #ifdef CONFIG_SWIOTLB
         if (swiotlb_nr_tbl()) {
                 return ttm_dma_populate((void *)ttm, dev->dev);
@@ -1105,6 +1111,13 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm)
         dev_priv = nouveau_bdev(ttm->bdev);
         dev = dev_priv->dev;
 
+#if __OS_HAS_AGP
+        if (dev_priv->gart_info.type == NOUVEAU_GART_AGP) {
+                ttm_agp_tt_unpopulate(ttm);
+                return;
+        }
+#endif
+
 #ifdef CONFIG_SWIOTLB
         if (swiotlb_nr_tbl()) {
                 ttm_dma_unpopulate((void *)ttm, dev->dev);
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index 1882025a9dc8..c421e77ace71 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -618,6 +618,11 @@ static int radeon_ttm_tt_populate(struct ttm_tt *ttm)
                 return 0;
 
         rdev = radeon_get_rdev(ttm->bdev);
+#if __OS_HAS_AGP
+        if (rdev->flags & RADEON_IS_AGP) {
+                return ttm_agp_tt_populate(ttm);
+        }
+#endif
 
 #ifdef CONFIG_SWIOTLB
         if (swiotlb_nr_tbl()) {
@@ -654,6 +659,12 @@ static void radeon_ttm_tt_unpopulate(struct ttm_tt *ttm)
         unsigned i;
 
         rdev = radeon_get_rdev(ttm->bdev);
+#if __OS_HAS_AGP
+        if (rdev->flags & RADEON_IS_AGP) {
+                ttm_agp_tt_unpopulate(ttm);
+                return;
+        }
+#endif
 
 #ifdef CONFIG_SWIOTLB
         if (swiotlb_nr_tbl()) {
diff --git a/drivers/gpu/drm/ttm/ttm_agp_backend.c b/drivers/gpu/drm/ttm/ttm_agp_backend.c
index 14ebd3650aa9..747c1413fc95 100644
--- a/drivers/gpu/drm/ttm/ttm_agp_backend.c
+++ b/drivers/gpu/drm/ttm/ttm_agp_backend.c
@@ -31,6 +31,7 @@
 
 #include "ttm/ttm_module.h"
 #include "ttm/ttm_bo_driver.h"
+#include "ttm/ttm_page_alloc.h"
 #ifdef TTM_HAS_AGP
 #include "ttm/ttm_placement.h"
 #include <linux/agp_backend.h>
@@ -97,6 +98,7 @@ static void ttm_agp_destroy(struct ttm_tt *ttm)
 
         if (agp_be->mem)
                 ttm_agp_unbind(ttm);
+        ttm_tt_fini(ttm);
         kfree(agp_be);
 }
 
@@ -129,4 +131,19 @@ struct ttm_tt *ttm_agp_tt_create(struct ttm_bo_device *bdev,
 }
 EXPORT_SYMBOL(ttm_agp_tt_create);
 
+int ttm_agp_tt_populate(struct ttm_tt *ttm)
+{
+        if (ttm->state != tt_unpopulated)
+                return 0;
+
+        return ttm_pool_populate(ttm);
+}
+EXPORT_SYMBOL(ttm_agp_tt_populate);
+
+void ttm_agp_tt_unpopulate(struct ttm_tt *ttm)
+{
+        ttm_pool_unpopulate(ttm);
+}
+EXPORT_SYMBOL(ttm_agp_tt_unpopulate);
+
 #endif
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index 58e1fa14fe3a..2f75d203a2bf 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -191,6 +191,7 @@ int ttm_tt_init(struct ttm_tt *ttm, struct ttm_bo_device *bdev,
         ttm->page_flags = page_flags;
         ttm->dummy_read_page = dummy_read_page;
         ttm->state = tt_unpopulated;
+        ttm->swap_storage = NULL;
 
         ttm_tt_alloc_page_directory(ttm);
         if (!ttm->pages) {
@@ -222,6 +223,7 @@ int ttm_dma_tt_init(struct ttm_dma_tt *ttm_dma, struct ttm_bo_device *bdev,
         ttm->page_flags = page_flags;
         ttm->dummy_read_page = dummy_read_page;
         ttm->state = tt_unpopulated;
+        ttm->swap_storage = NULL;
 
         INIT_LIST_HEAD(&ttm_dma->pages_list);
         ttm_dma_tt_alloc_page_directory(ttm_dma);