diff options
author | Dave Airlie <airlied@redhat.com> | 2009-08-27 09:53:47 +1000 |
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committer | Dave Airlie <airlied@redhat.com> | 2009-08-27 09:53:47 +1000 |
commit | c9c97b8c75019814d8c007059bc827bb475be917 (patch) | |
tree | 2a990d2beee85bb059a38fdea6a4d3325d3791e3 /drivers/gpu/drm/ttm | |
parent | 50f153036c9d9e4ae1768d5ca9c2ad4184f7a0b7 (diff) | |
download | op-kernel-dev-c9c97b8c75019814d8c007059bc827bb475be917.zip op-kernel-dev-c9c97b8c75019814d8c007059bc827bb475be917.tar.gz |
drm/ttm: consolidate cache flushing code in one place.
This merges the TTM and drm cache flushing into one file in the
drm core.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/ttm')
-rw-r--r-- | drivers/gpu/drm/ttm/ttm_tt.c | 67 |
1 files changed, 2 insertions, 65 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c index 42cca55..a55ee1a 100644 --- a/drivers/gpu/drm/ttm/ttm_tt.c +++ b/drivers/gpu/drm/ttm/ttm_tt.c @@ -34,76 +34,13 @@ #include <linux/pagemap.h> #include <linux/file.h> #include <linux/swap.h> +#include "drm_cache.h" #include "ttm/ttm_module.h" #include "ttm/ttm_bo_driver.h" #include "ttm/ttm_placement.h" static int ttm_tt_swapin(struct ttm_tt *ttm); -#if defined(CONFIG_X86) -static void ttm_tt_clflush_page(struct page *page) -{ - uint8_t *page_virtual; - unsigned int i; - - if (unlikely(page == NULL)) - return; - - page_virtual = kmap_atomic(page, KM_USER0); - - for (i = 0; i < PAGE_SIZE; i += boot_cpu_data.x86_clflush_size) - clflush(page_virtual + i); - - kunmap_atomic(page_virtual, KM_USER0); -} - -static void ttm_tt_cache_flush_clflush(struct page *pages[], - unsigned long num_pages) -{ - unsigned long i; - - mb(); - for (i = 0; i < num_pages; ++i) - ttm_tt_clflush_page(*pages++); - mb(); -} -#elif !defined(__powerpc__) -static void ttm_tt_ipi_handler(void *null) -{ - ; -} -#endif - -void ttm_tt_cache_flush(struct page *pages[], unsigned long num_pages) -{ - -#if defined(CONFIG_X86) - if (cpu_has_clflush) { - ttm_tt_cache_flush_clflush(pages, num_pages); - return; - } -#elif defined(__powerpc__) - unsigned long i; - - for (i = 0; i < num_pages; ++i) { - struct page *page = pages[i]; - void *page_virtual; - - if (unlikely(page == NULL)) - continue; - - page_virtual = kmap_atomic(page, KM_USER0); - flush_dcache_range((unsigned long) page_virtual, - (unsigned long) page_virtual + PAGE_SIZE); - kunmap_atomic(page_virtual, KM_USER0); - } -#else - if (on_each_cpu(ttm_tt_ipi_handler, NULL, 1) != 0) - printk(KERN_ERR TTM_PFX - "Timed out waiting for drm cache flush.\n"); -#endif -} - /** * Allocates storage for pointers to the pages that back the ttm. * @@ -302,7 +239,7 @@ static int ttm_tt_set_caching(struct ttm_tt *ttm, } if (ttm->caching_state == tt_cached) - ttm_tt_cache_flush(ttm->pages, ttm->num_pages); + drm_clflush_pages(ttm->pages, ttm->num_pages); for (i = 0; i < ttm->num_pages; ++i) { cur_page = ttm->pages[i]; |