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authorJerome Glisse <jglisse@redhat.com>2011-11-09 17:15:26 -0500
committerDave Airlie <airlied@redhat.com>2011-12-06 10:40:02 +0000
commit8e7e70522d760c4ccd4cd370ebfa0ba69e006c6e (patch)
treea2b0f931e513f3aeba174b974bd5e869685fe288 /include/drm
parent3230cfc34fca9d17c1628cf0e4ac25199592a69a (diff)
downloadop-kernel-dev-8e7e70522d760c4ccd4cd370ebfa0ba69e006c6e.zip
op-kernel-dev-8e7e70522d760c4ccd4cd370ebfa0ba69e006c6e.tar.gz
drm/ttm: isolate dma data from ttm_tt V4
Move dma data to a superset ttm_dma_tt structure which herit from ttm_tt. This allow driver that don't use dma functionalities to not have to waste memory for it. V2 Rebase on top of no memory account changes (where/when is my delorean when i need it ?) V3 Make sure page list is initialized empty V4 typo/syntax fixes Signed-off-by: Jerome Glisse <jglisse@redhat.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Diffstat (limited to 'include/drm')
-rw-r--r--include/drm/ttm/ttm_bo_driver.h32
-rw-r--r--include/drm/ttm/ttm_page_alloc.h33
2 files changed, 31 insertions, 34 deletions
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index beef9ab..b2a0848 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -103,8 +103,6 @@ enum ttm_caching_state {
* @swap_storage: Pointer to shmem struct file for swap storage.
* @caching_state: The current caching state of the pages.
* @state: The current binding state of the pages.
- * @dma_address: The DMA (bus) addresses of the pages (if TTM_PAGE_FLAG_DMA32)
- * @alloc_list: used by some page allocation backend
*
* This is a structure holding the pages, caching- and aperture binding
* status for a buffer object that isn't backed by fixed (VRAM / AGP)
@@ -127,8 +125,23 @@ struct ttm_tt {
tt_unbound,
tt_unpopulated,
} state;
+};
+
+/**
+ * struct ttm_dma_tt
+ *
+ * @ttm: Base ttm_tt struct.
+ * @dma_address: The DMA (bus) addresses of the pages
+ * @pages_list: used by some page allocation backend
+ *
+ * This is a structure holding the pages, caching- and aperture binding
+ * status for a buffer object that isn't backed by fixed (VRAM / AGP)
+ * memory.
+ */
+struct ttm_dma_tt {
+ struct ttm_tt ttm;
dma_addr_t *dma_address;
- struct list_head alloc_list;
+ struct list_head pages_list;
};
#define TTM_MEMTYPE_FLAG_FIXED (1 << 0) /* Fixed (on-card) PCI memory */
@@ -595,6 +608,19 @@ ttm_flag_masked(uint32_t *old, uint32_t new, uint32_t mask)
extern int ttm_tt_init(struct ttm_tt *ttm, struct ttm_bo_device *bdev,
unsigned long size, uint32_t page_flags,
struct page *dummy_read_page);
+extern int ttm_dma_tt_init(struct ttm_dma_tt *ttm_dma, struct ttm_bo_device *bdev,
+ unsigned long size, uint32_t page_flags,
+ struct page *dummy_read_page);
+
+/**
+ * ttm_tt_fini
+ *
+ * @ttm: the ttm_tt structure.
+ *
+ * Free memory of ttm_tt structure
+ */
+extern void ttm_tt_fini(struct ttm_tt *ttm);
+extern void ttm_dma_tt_fini(struct ttm_dma_tt *ttm_dma);
/**
* ttm_ttm_bind:
diff --git a/include/drm/ttm/ttm_page_alloc.h b/include/drm/ttm/ttm_page_alloc.h
index 1e1337e..5fe2740 100644
--- a/include/drm/ttm/ttm_page_alloc.h
+++ b/include/drm/ttm/ttm_page_alloc.h
@@ -30,35 +30,6 @@
#include "ttm_memory.h"
/**
- * Get count number of pages from pool to pages list.
- *
- * @pages: head of empty linked list where pages are filled.
- * @flags: ttm flags for page allocation.
- * @cstate: ttm caching state for the page.
- * @count: number of pages to allocate.
- * @dma_address: The DMA (bus) address of pages (if TTM_PAGE_FLAG_DMA32 set).
- */
-int ttm_get_pages(struct page **pages,
- int flags,
- enum ttm_caching_state cstate,
- unsigned npages,
- dma_addr_t *dma_address);
-/**
- * Put linked list of pages to pool.
- *
- * @pages: list of pages to free.
- * @page_count: number of pages in the list. Zero can be passed for unknown
- * count.
- * @flags: ttm flags for page allocation.
- * @cstate: ttm caching state.
- * @dma_address: The DMA (bus) address of pages (if TTM_PAGE_FLAG_DMA32 set).
- */
-void ttm_put_pages(struct page **pages,
- unsigned npages,
- int flags,
- enum ttm_caching_state cstate,
- dma_addr_t *dma_address);
-/**
* Initialize pool allocator.
*/
int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages);
@@ -107,8 +78,8 @@ void ttm_dma_page_alloc_fini(void);
*/
extern int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data);
-int ttm_dma_populate(struct ttm_tt *ttm, struct device *dev);
-extern void ttm_dma_unpopulate(struct ttm_tt *ttm, struct device *dev);
+extern int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, struct device *dev);
+extern void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, struct device *dev);
#else
static inline int ttm_dma_page_alloc_init(struct ttm_mem_global *glob,
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