1 files changed, 26 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index c7d64a739033..0137689ed461 100644
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -580,7 +580,7 @@ int radeon_cs_finish_pages(struct radeon_cs_parser *p)
         return 0;
 }
 
-int radeon_cs_update_pages(struct radeon_cs_parser *p, int pg_idx)
+static int radeon_cs_update_pages(struct radeon_cs_parser *p, int pg_idx)
 {
         int new_page;
         struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx];
@@ -623,3 +623,28 @@ int radeon_cs_update_pages(struct radeon_cs_parser *p, int pg_idx)
 
         return new_page;
 }
+
+u32 radeon_get_ib_value(struct radeon_cs_parser *p, int idx)
+{
+        struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx];
+        u32 pg_idx, pg_offset;
+        u32 idx_value = 0;
+        int new_page;
+
+        pg_idx = (idx * 4) / PAGE_SIZE;
+        pg_offset = (idx * 4) % PAGE_SIZE;
+
+        if (ibc->kpage_idx[0] == pg_idx)
+                return ibc->kpage[0][pg_offset/4];
+        if (ibc->kpage_idx[1] == pg_idx)
+                return ibc->kpage[1][pg_offset/4];
+
+        new_page = radeon_cs_update_pages(p, pg_idx);
+        if (new_page < 0) {
+                p->parser_error = new_page;
+                return 0;
+        }
+
+        idx_value = ibc->kpage[new_page][pg_offset/4];
+        return idx_value;
+}