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-rw-r--r--drivers/gpu/drm/radeon/r300.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c
index e699e6d053dd..43b55a030b4d 100644
--- a/drivers/gpu/drm/radeon/r300.c
+++ b/drivers/gpu/drm/radeon/r300.c
@@ -506,11 +506,14 @@ void r300_vram_info(struct radeon_device *rdev)
/* DDR for all card after R300 & IGP */
rdev->mc.vram_is_ddr = true;
+
tmp = RREG32(RADEON_MEM_CNTL);
- if (tmp & R300_MEM_NUM_CHANNELS_MASK) {
- rdev->mc.vram_width = 128;
- } else {
- rdev->mc.vram_width = 64;
+ tmp &= R300_MEM_NUM_CHANNELS_MASK;
+ switch (tmp) {
+ case 0: rdev->mc.vram_width = 64; break;
+ case 1: rdev->mc.vram_width = 128; break;
+ case 2: rdev->mc.vram_width = 256; break;
+ default: rdev->mc.vram_width = 128; break;
}
r100_vram_init_sizes(rdev);
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