[PATCH] drm/amdgpu: Enable translate_further to extend UTCL2 reach

[Deucher, Alexander]

[Public]

Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
________________________________
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of Joseph Greathouse <Joseph.Greathouse at amd.com>
Sent: Thursday, August 4, 2022 12:01 PM
To: amd-gfx at lists.freedesktop.org <amd-gfx at lists.freedesktop.org>
Cc: Russell, Kent <Kent.Russell at amd.com>; Greathouse, Joseph <Joseph.Greathouse at amd.com>; Koenig, Christian <Christian.Koenig at amd.com>
Subject: [PATCH] drm/amdgpu: Enable translate_further to extend UTCL2 reach

Enable translate_further on Arcturus and Aldebaran server chips
in order to increase the UTCL2 reach from 8 GiB to 64 GiB,
which is more in line with the amount of framebuffer DRAM in
the devices.

Signed-off-by: Joseph Greathouse <Joseph.Greathouse at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 22761a3bb818..ab89d91975ab 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -1624,12 +1624,15 @@ static int gmc_v9_0_sw_init(void *handle)
                         amdgpu_vm_adjust_size(adev, 256 * 1024, 9, 3, 47);
                 else
                         amdgpu_vm_adjust_size(adev, 256 * 1024, 9, 3, 48);
+               if (adev->ip_versions[GC_HWIP][0] == IP_VERSION(9, 4, 2))
+                       adev->gmc.translate_further = adev->vm_manager.num_level > 1;
                 break;
         case IP_VERSION(9, 4, 1):
                 adev->num_vmhubs = 3;

                 /* Keep the vm size same with Vega20 */
                 amdgpu_vm_adjust_size(adev, 256 * 1024, 9, 3, 48);
+               adev->gmc.translate_further = adev->vm_manager.num_level > 1;
                 break;
         default:
                 break;
--
2.20.1

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