Get it from the system info table.
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 76 ++++++++++++++++++-----------------
1 file changed, 40 insertions(+), 36 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 175ba5f..19f3ffb 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -23,6 +23,7 @@
#include <linux/firmware.h>
#include "amdgpu.h"
#include "gmc_v9_0.h"
+#include "amdgpu_atomfirmware.h"
#include "vega10/soc15ip.h"
#include "vega10/HDP/hdp_4_0_offset.h"
@@ -442,43 +443,46 @@ static int gmc_v9_0_mc_init(struct amdgpu_device *adev)
u32 tmp;
int chansize, numchan;
- /* hbm memory channel size */
- chansize = 128;
-
- tmp = RREG32_SOC15(DF, 0, mmDF_CS_AON0_DramBaseAddress0);
- tmp &= DF_CS_AON0_DramBaseAddress0__IntLvNumChan_MASK;
- tmp >>= DF_CS_AON0_DramBaseAddress0__IntLvNumChan__SHIFT;
- switch (tmp) {
- case 0:
- default:
- numchan = 1;
- break;
- case 1:
- numchan = 2;
- break;
- case 2:
- numchan = 0;
- break;
- case 3:
- numchan = 4;
- break;
- case 4:
- numchan = 0;
- break;
- case 5:
- numchan = 8;
- break;
- case 6:
- numchan = 0;
- break;
- case 7:
- numchan = 16;
- break;
- case 8:
- numchan = 2;
- break;
+ adev->mc.vram_width = amdgpu_atomfirmware_get_vram_width(adev);
+ if (!adev->mc.vram_width) {
+ /* hbm memory channel size */
+ chansize = 128;
+
+ tmp = RREG32_SOC15(DF, 0, mmDF_CS_AON0_DramBaseAddress0);
+ tmp &= DF_CS_AON0_DramBaseAddress0__IntLvNumChan_MASK;
+ tmp >>= DF_CS_AON0_DramBaseAddress0__IntLvNumChan__SHIFT;
+ switch (tmp) {
+ case 0:
+ default:
+ numchan = 1;
+ break;
+ case 1:
+ numchan = 2;
+ break;
+ case 2:
+ numchan = 0;
+ break;
+ case 3:
+ numchan = 4;
+ break;
+ case 4:
+ numchan = 0;
+ break;
+ case 5:
+ numchan = 8;
+ break;
+ case 6:
+ numchan = 0;
+ break;
+ case 7:
+ numchan = 16;
+ break;
+ case 8:
+ numchan = 2;
+ break;
+ }
+ adev->mc.vram_width = numchan * chansize;
}
- adev->mc.vram_width = numchan * chansize;
/* Could aper size report 0 ? */
adev->mc.aper_base = pci_resource_start(adev->pdev, 0);
--
2.5.5
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