From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Fri, 18 Aug 2017 15:50:17 +0200
Subject: drm/amdgpu: fix and cleanup shadow handling
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Git-commit: 2e8f9fbe985e930055eb55323b8491cc668b178f
Patch-mainline: v4.14-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Set the shadow flag on the shadow and not the parent, always bind shadow BOs
during allocation instead of manually, use the reservation_object wrappers
to grab the lock.
This fixes a couple of issues with binding the shadow BOs as well as correctly
evicting them when memory becomes tight.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 6 ---
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 48 ++++++++++++++---------------
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 8 ----
3 files changed, 24 insertions(+), 38 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2622,12 +2622,6 @@ static int amdgpu_recover_vram_from_shad
goto err;
}
- r = amdgpu_ttm_bind(&bo->shadow->tbo, &bo->shadow->tbo.mem);
- if (r) {
- DRM_ERROR("%p bind failed\n", bo->shadow);
- goto err;
- }
-
r = amdgpu_bo_restore_from_shadow(adev, ring, bo,
NULL, fence, true);
if (r) {
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -91,7 +91,10 @@ static void amdgpu_ttm_placement_init(st
if (domain & AMDGPU_GEM_DOMAIN_GTT) {
places[c].fpfn = 0;
- places[c].lpfn = 0;
+ if (flags & AMDGPU_GEM_CREATE_SHADOW)
+ places[c].lpfn = adev->mc.gart_size >> PAGE_SHIFT;
+ else
+ places[c].lpfn = 0;
places[c].flags = TTM_PL_FLAG_TT;
if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
places[c].flags |= TTM_PL_FLAG_WC |
@@ -446,17 +449,16 @@ static int amdgpu_bo_create_shadow(struc
if (bo->shadow)
return 0;
- bo->flags |= AMDGPU_GEM_CREATE_SHADOW;
- memset(&placements, 0,
- (AMDGPU_GEM_DOMAIN_MAX + 1) * sizeof(struct ttm_place));
-
- amdgpu_ttm_placement_init(adev, &placement,
- placements, AMDGPU_GEM_DOMAIN_GTT,
- AMDGPU_GEM_CREATE_CPU_GTT_USWC);
+ memset(&placements, 0, sizeof(placements));
+ amdgpu_ttm_placement_init(adev, &placement, placements,
+ AMDGPU_GEM_DOMAIN_GTT,
+ AMDGPU_GEM_CREATE_CPU_GTT_USWC |
+ AMDGPU_GEM_CREATE_SHADOW);
r = amdgpu_bo_create_restricted(adev, size, byte_align, true,
AMDGPU_GEM_DOMAIN_GTT,
- AMDGPU_GEM_CREATE_CPU_GTT_USWC,
+ AMDGPU_GEM_CREATE_CPU_GTT_USWC |
+ AMDGPU_GEM_CREATE_SHADOW,
NULL, &placement,
bo->tbo.resv,
0,
@@ -484,30 +486,28 @@ int amdgpu_bo_create(struct amdgpu_devic
{
struct ttm_placement placement = {0};
struct ttm_place placements[AMDGPU_GEM_DOMAIN_MAX + 1];
+ uint64_t parent_flags = flags & ~AMDGPU_GEM_CREATE_SHADOW;
int r;
- memset(&placements, 0,
- (AMDGPU_GEM_DOMAIN_MAX + 1) * sizeof(struct ttm_place));
-
- amdgpu_ttm_placement_init(adev, &placement,
- placements, domain, flags);
-
- r = amdgpu_bo_create_restricted(adev, size, byte_align, kernel,
- domain, flags, sg, &placement,
- resv, init_value, bo_ptr);
+ memset(&placements, 0, sizeof(placements));
+ amdgpu_ttm_placement_init(adev, &placement, placements,
+ domain, parent_flags);
+
+ r = amdgpu_bo_create_restricted(adev, size, byte_align, kernel, domain,
+ parent_flags, sg, &placement, resv,
+ init_value, bo_ptr);
if (r)
return r;
- if (amdgpu_need_backup(adev) && (flags & AMDGPU_GEM_CREATE_SHADOW)) {
- if (!resv) {
- r = ww_mutex_lock(&(*bo_ptr)->tbo.resv->lock, NULL);
- WARN_ON(r != 0);
- }
+ if ((flags & AMDGPU_GEM_CREATE_SHADOW) && amdgpu_need_backup(adev)) {
+ if (!resv)
+ WARN_ON(reservation_object_lock((*bo_ptr)->tbo.resv,
+ NULL));
r = amdgpu_bo_create_shadow(adev, size, byte_align, (*bo_ptr));
if (!resv)
- ww_mutex_unlock(&(*bo_ptr)->tbo.resv->lock);
+ reservation_object_unlock((*bo_ptr)->tbo.resv);
if (r)
amdgpu_bo_unref(bo_ptr);
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -165,14 +165,6 @@ static int amdgpu_vm_validate_level(stru
unsigned i;
int r;
- if (parent->bo->shadow) {
- struct amdgpu_bo *shadow = parent->bo->shadow;
-
- r = amdgpu_ttm_bind(&shadow->tbo, &shadow->tbo.mem);
- if (r)
- return r;
- }
-
if (use_cpu_for_update) {
r = amdgpu_bo_kmap(parent->bo, NULL);
if (r)