[Public]
I think this may have already been fixed with this patch:
https://gitlab.freedesktop.org/agd5f/linux/-/commit/2a7b9a8437130fd328001f4edfac8eec98dfe298
Alex
________________________________
From: Mahapatra, Rajib <rajib.mahapa...@amd.com>
Sent: Thursday, August 26, 2021 2:07 PM
To: Wentland, Harry <harry.wentl...@amd.com>; Kazlauskas, Nicholas
<nicholas.kazlaus...@amd.com>; Deucher, Alexander <alexander.deuc...@amd.com>;
Wu, Hersen <hersenxs...@amd.com>
Cc: amd-gfx@lists.freedesktop.org <amd-gfx@lists.freedesktop.org>; Mahapatra,
Rajib <rajib.mahapa...@amd.com>
Subject: [PATCH] drm/amd/display: Set the domain as GTT when VRAM size <= 32 MB
[Why]
In lower carve out (<= 32 MB) devices, it was unable to pin framebuffer in
VRAM domain for some BO allocations. The device shows below error logs and
sometimes it reboots too.
amdgpu 0000:02:00.0: amdgpu: 00000000d721431c pin failed
[drm:dm_plane_helper_prepare_fb] *ERROR* Failed to pin framebuffer with error
-12
[How]
Place the domain as GTT when VRAM size <= 32 MB.
Signed-off-by: Rajib Mahapatra <rajib.mahapa...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 +
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 10 +++++++++-
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index dc3c6b3a00e5..d719be448eec 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -236,6 +236,7 @@ extern int amdgpu_num_kcq;
#define AMDGPU_VM_MAX_NUM_CTX 4096
#define AMDGPU_SG_THRESHOLD (256*1024*1024)
+#define AMDGPU_VRAM_MIN_THRESHOLD (32*1024*1024)
#define AMDGPU_DEFAULT_GTT_SIZE_MB 3072ULL /* 3GB by default */
#define AMDGPU_WAIT_IDLE_TIMEOUT_IN_MS 3000
#define AMDGPU_MAX_USEC_TIMEOUT 100000 /* 100 ms */
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index e1e57e7465a7..f71391599be1 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -7106,8 +7106,16 @@ static int dm_plane_helper_prepare_fb(struct drm_plane
*plane,
return r;
}
- if (plane->type != DRM_PLANE_TYPE_CURSOR)
+ if (plane->type != DRM_PLANE_TYPE_CURSOR) {
domain = amdgpu_display_supported_domains(adev, rbo->flags);
+ /*
+ * Handle devices with lower carve out.
+ */
+ if (adev->gmc.real_vram_size <= AMDGPU_VRAM_MIN_THRESHOLD) {
+ domain |= (domain & AMDGPU_GEM_DOMAIN_GTT) ? domain :
+ AMDGPU_GEM_DOMAIN_GTT;
+ }
+ }
else
domain = AMDGPU_GEM_DOMAIN_VRAM;
--
2.25.1
