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From 7e9f057b0bea04c1a0d50d5eb0118a02d5544952 Mon Sep 17 00:00:00 2001
From: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Date: Thu, 31 Mar 2016 16:13:28 -0400
Subject: [PATCH 1415/4131] drm/amdkgd: Temporary fix for HBM width
The current computation for vram width is outdated. For permanent
solution this has to be fixed.
Change-Id: I1ec2895fae698def72d5047961bdf041f92f8194
Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index e306006..d956df4 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -543,6 +543,10 @@ static int gmc_v8_0_mc_init(struct amdgpu_device *adev)
break;
}
adev->mc.vram_width = numchan * chansize;
+ /* FIXME: The above calculation is outdated.
+ * For HBM provide a temporary fix */
+ if (adev->mc.vram_type == AMDGPU_VRAM_TYPE_HBM)
+ adev->mc.vram_width = AMDGPU_VRAM_TYPE_HBM_WIDTH;
}
/* Could aper size report 0 ? */
adev->mc.aper_base = pci_resource_start(adev->pdev, 0);
--
2.7.4
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