From: Thierry Reding <treding@xxxxxxxxxx>
Add implementations for drm_clflush_*() on 64-bit ARM. This shares a lot
of code with the 32-bit ARM implementation.
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
drivers/gpu/drm/drm_cache.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_cache.c b/drivers/gpu/drm/drm_cache.c
index 200d86c3d72d..0c3072b4cdc9 100644
--- a/drivers/gpu/drm/drm_cache.c
+++ b/drivers/gpu/drm/drm_cache.c
@@ -102,6 +102,17 @@ static void drm_clflush_page(struct page *page)
}
#endif
+#if defined(CONFIG_ARM64)
+static void drm_clflush_page(struct page *page)
+{
+ void *virt;
+
+ virt = kmap_atomic(page);
+ __dma_flush_range(virt, virt + PAGE_SIZE);
+ kunmap_atomic(virt);
+}
+#endif
+
void
drm_clflush_pages(struct page *pages[], unsigned long num_pages)
{
@@ -129,7 +140,7 @@ drm_clflush_pages(struct page *pages[], unsigned long num_pages)
(unsigned long)page_virtual + PAGE_SIZE);
kunmap_atomic(page_virtual);
}
-#elif defined(CONFIG_ARM)
+#elif defined(CONFIG_ARM) || defined(CONFIG_ARM64)
unsigned long i;
for (i = 0; i < num_pages; i++)
@@ -158,7 +169,7 @@ drm_clflush_sg(struct sg_table *st)
if (wbinvd_on_all_cpus())
printk(KERN_ERR "Timed out waiting for cache flush.\n");
-#elif defined(CONFIG_ARM)
+#elif defined(CONFIG_ARM) || defined(CONFIG_ARM64)
struct sg_page_iter sg_iter;
for_each_sg_page(st->sgl, &sg_iter, st->nents, 0)
--
2.3.2
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