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authorMichel Dänzer <daenzer@vmware.com>2009-06-15 16:56:13 +0200
committerDave Airlie <airlied@redhat.com>2009-06-19 09:24:53 +1000
commit46f4b3eab73e621bc239bfa62ebdc44dcc0a877a (patch)
tree242528337269c59a967560b7141b87ff33150db9
parent919f32f1df228723f66bf5c5aed23e0ab076b1a1 (diff)
drm/ttm: Add some powerpc cache flush code.
Optimise the powerpc flushing path for TTM. Signed-off-by: Dave Airlie <airlied@redhat.com>
-rw-r--r--drivers/gpu/drm/ttm/ttm_tt.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index c27ab3a877a..0331fa74cd3 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -68,7 +68,7 @@ static void ttm_tt_cache_flush_clflush(struct page *pages[],
ttm_tt_clflush_page(*pages++);
mb();
}
-#else
+#elif !defined(__powerpc__)
static void ttm_tt_ipi_handler(void *null)
{
;
@@ -83,6 +83,15 @@ void ttm_tt_cache_flush(struct page *pages[], unsigned long num_pages)
ttm_tt_cache_flush_clflush(pages, num_pages);
return;
}
+#elif defined(__powerpc__)
+ unsigned long i;
+
+ for (i = 0; i < num_pages; ++i) {
+ if (pages[i]) {
+ unsigned long start = (unsigned long)page_address(pages[i]);
+ flush_dcache_range(start, start + PAGE_SIZE);
+ }
+ }
#else
if (on_each_cpu(ttm_tt_ipi_handler, NULL, 1) != 0)
printk(KERN_ERR TTM_PFX