agp: kill agp_(map|unmap)_page

Only used to remap the scratch page. Now that intel-gtt does this
itself, kill the support code.

Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

diff --git a/drivers/char/agp/agp.h b/drivers/char/agp/agp.h
index 1204909..04ad0bb 100644 (file)
--- a/drivers/char/agp/agp.h
+++ b/drivers/char/agp/agp.h
@@ -122,8 +122,6 @@ struct agp_bridge_driver {
        int (*agp_type_to_mask_type) (struct agp_bridge_data *, int);
        void (*chipset_flush)(struct agp_bridge_data *);
 
-       int (*agp_map_page)(struct page *page, dma_addr_t *ret);
-       void (*agp_unmap_page)(struct page *page, dma_addr_t dma);
        int (*agp_map_memory)(struct agp_memory *mem);
        void (*agp_unmap_memory)(struct agp_memory *mem);
 };

diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c
index ee4f855..f27d0d0 100644 (file)
--- a/drivers/char/agp/backend.c
+++ b/drivers/char/agp/backend.c
@@ -151,17 +151,7 @@ static int agp_backend_initialize(struct agp_bridge_data *bridge)
                }
 
                bridge->scratch_page_page = page;
-               if (bridge->driver->agp_map_page) {
-                       if (bridge->driver->agp_map_page(page,
-                                                        &bridge->scratch_page_dma)) {
-                               dev_err(&bridge->dev->dev,
-                                       "unable to dma-map scratch page\n");
-                               rc = -ENOMEM;
-                               goto err_out_nounmap;
-                       }
-               } else {
-                       bridge->scratch_page_dma = page_to_phys(page);
-               }
+               bridge->scratch_page_dma = page_to_phys(page);
 
                bridge->scratch_page = bridge->driver->mask_memory(bridge,
                                                   bridge->scratch_page_dma, 0);
@@ -204,12 +194,6 @@ static int agp_backend_initialize(struct agp_bridge_data *bridge)
        return 0;
 
 err_out:
-       if (bridge->driver->needs_scratch_page &&
-           bridge->driver->agp_unmap_page) {
-               bridge->driver->agp_unmap_page(bridge->scratch_page_page,
-                                              bridge->scratch_page_dma);
-       }
-err_out_nounmap:
        if (bridge->driver->needs_scratch_page) {
                void *va = page_address(bridge->scratch_page_page);
 
@@ -240,10 +224,6 @@ static void agp_backend_cleanup(struct agp_bridge_data *bridge)
            bridge->driver->needs_scratch_page) {
                void *va = page_address(bridge->scratch_page_page);
 
-               if (bridge->driver->agp_unmap_page)
-                       bridge->driver->agp_unmap_page(bridge->scratch_page_page,
-                                                      bridge->scratch_page_dma);
-
                bridge->driver->agp_destroy_page(va, AGP_PAGE_DESTROY_UNMAP);
                bridge->driver->agp_destroy_page(va, AGP_PAGE_DESTROY_FREE);
        }