[PATCH 4.5 028/124] drm/amdgpu/gmc: use proper register for vram type on Fiji

[Greg Kroah-Hartman]

4.5-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alex Deucher <alexander.deuc...@amd.com>

commit b634de4f446c062a0c95ec4d150b4cf7c85e3526 upstream.

The offset changed on Fiji.

Reviewed-by: Harish Kasiviswanathan <harish.kasiviswanat...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -866,6 +866,8 @@ static int gmc_v8_0_late_init(void *hand
        return amdgpu_irq_get(adev, &adev->mc.vm_fault, 0);
 }
 
+#define mmMC_SEQ_MISC0_FIJI 0xA71
+
 static int gmc_v8_0_sw_init(void *handle)
 {
        int r;
@@ -879,7 +881,12 @@ static int gmc_v8_0_sw_init(void *handle
        if (adev->flags & AMD_IS_APU) {
                adev->mc.vram_type = AMDGPU_VRAM_TYPE_UNKNOWN;
        } else {
-               u32 tmp = RREG32(mmMC_SEQ_MISC0);
+               u32 tmp;
+
+               if (adev->asic_type == CHIP_FIJI)
+                       tmp = RREG32(mmMC_SEQ_MISC0_FIJI);
+               else
+                       tmp = RREG32(mmMC_SEQ_MISC0);
                tmp &= MC_SEQ_MISC0__MT__MASK;
                adev->mc.vram_type = gmc_v8_0_convert_vram_type(tmp);
        }