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From 8d4e7940ab068137237447f5c70e96e1f57cd5c9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Thu, 16 Aug 2018 10:49:41 +0200
Subject: [PATCH 1560/2940] drm/amdgpu: let amdgpu_vm_clear_bo figure out ats
status v2
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Instead of providing it from outside figure out the ats status in the
function itself from the data structures.
v2: simplify finding the right level
v3: partially revert changes from v2, more cleanup and split code
into more functions.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Chaudhary Amit Kumar <Chaudharyamit.Kumar@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 72 +++++++++++++++++---------
1 file changed, 47 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index e836d8fa639e..338a68a9822d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -182,6 +182,22 @@ static unsigned amdgpu_vm_num_entries(struct amdgpu_device *adev,
return AMDGPU_VM_PTE_COUNT(adev);
}
+/**
+ * amdgpu_vm_num_ats_entries - return the number of ATS entries in the root PD
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Returns:
+ * The number of entries in the root page directory which needs the ATS setting.
+ */
+static unsigned amdgpu_vm_num_ats_entries(struct amdgpu_device *adev)
+{
+ unsigned shift;
+
+ shift = amdgpu_vm_level_shift(adev, adev->vm_manager.root_level);
+ return AMDGPU_GMC_HOLE_START >> (shift + AMDGPU_GPU_PAGE_SHIFT);
+}
+
/**
* amdgpu_vm_entries_mask - the mask to get the entry number of a PD/PT
*
@@ -725,8 +741,6 @@ bool amdgpu_vm_ready(struct amdgpu_vm *vm)
* @adev: amdgpu_device pointer
* @vm: VM to clear BO from
* @bo: BO to clear
- * @level: level this BO is at
- * @pte_support_ats: indicate ATS support from PTE
*
* Root PD needs to be reserved when calling this.
*
@@ -734,10 +748,12 @@ bool amdgpu_vm_ready(struct amdgpu_vm *vm)
* 0 on success, errno otherwise.
*/
static int amdgpu_vm_clear_bo(struct amdgpu_device *adev,
- struct amdgpu_vm *vm, struct amdgpu_bo *bo,
- unsigned level, bool pte_support_ats)
+ struct amdgpu_vm *vm,
+ struct amdgpu_bo *bo)
{
struct ttm_operation_ctx ctx = { true, false };
+ unsigned level = adev->vm_manager.root_level;
+ struct amdgpu_bo *ancestor = bo;
struct dma_fence *fence = NULL;
unsigned entries, ats_entries;
struct amdgpu_ring *ring;
@@ -745,21 +761,35 @@ static int amdgpu_vm_clear_bo(struct amdgpu_device *adev,
uint64_t addr;
int r;
+ /* Figure out our place in the hierarchy */
+ if (ancestor->parent) {
+ ++level;
+ while (ancestor->parent->parent) {
+ ++level;
+ ancestor = ancestor->parent;
+ }
+ }
+
entries = amdgpu_bo_size(bo) / 8;
+ if (!vm->pte_support_ats) {
+ ats_entries = 0;
+
+ } else if (!bo->parent) {
+ ats_entries = amdgpu_vm_num_ats_entries(adev);
+ ats_entries = min(ats_entries, entries);
+ entries -= ats_entries;
- if (pte_support_ats) {
- if (level == adev->vm_manager.root_level) {
- ats_entries = amdgpu_vm_level_shift(adev, level);
- ats_entries += AMDGPU_GPU_PAGE_SHIFT;
- ats_entries = AMDGPU_GMC_HOLE_START >> ats_entries;
- ats_entries = min(ats_entries, entries);
- entries -= ats_entries;
+ } else {
+ struct amdgpu_vm_pt *pt;
+
+ pt = container_of(ancestor->vm_bo, struct amdgpu_vm_pt, base);
+ ats_entries = amdgpu_vm_num_ats_entries(adev);
+ if ((pt - vm->root.entries) >= ats_entries) {
+ ats_entries = 0;
} else {
ats_entries = entries;
entries = 0;
}
- } else {
- ats_entries = 0;
}
ring = container_of(vm->entity.rq->sched, struct amdgpu_ring, sched);
@@ -882,7 +912,6 @@ int amdgpu_vm_alloc_pts(struct amdgpu_device *adev,
{
struct amdgpu_vm_pt_cursor cursor;
struct amdgpu_bo *pt;
- bool ats = false;
uint64_t eaddr;
int r;
@@ -892,9 +921,6 @@ int amdgpu_vm_alloc_pts(struct amdgpu_device *adev,
eaddr = saddr + size - 1;
- if (vm->pte_support_ats)
- ats = saddr < AMDGPU_GMC_HOLE_START;
-
saddr /= AMDGPU_GPU_PAGE_SIZE;
eaddr /= AMDGPU_GPU_PAGE_SIZE;
@@ -943,7 +969,7 @@ int amdgpu_vm_alloc_pts(struct amdgpu_device *adev,
amdgpu_vm_bo_base_init(&entry->base, vm, pt);
- r = amdgpu_vm_clear_bo(adev, vm, pt, cursor.level, ats);
+ r = amdgpu_vm_clear_bo(adev, vm, pt);
if (r)
goto error_free_pt;
}
@@ -3033,9 +3059,7 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm,
amdgpu_vm_bo_base_init(&vm->root.base, vm, root);
- r = amdgpu_vm_clear_bo(adev, vm, root,
- adev->vm_manager.root_level,
- vm->pte_support_ats);
+ r = amdgpu_vm_clear_bo(adev, vm, root);
if (r)
goto error_unreserve;
@@ -3118,9 +3142,8 @@ int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm)
* changing any other state, in case it fails.
*/
if (pte_support_ats != vm->pte_support_ats) {
- r = amdgpu_vm_clear_bo(adev, vm, vm->root.base.bo,
- adev->vm_manager.root_level,
- pte_support_ats);
+ vm->pte_support_ats = pte_support_ats;
+ r = amdgpu_vm_clear_bo(adev, vm, vm->root.base.bo);
if (r)
goto error;
}
@@ -3128,7 +3151,6 @@ int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm)
/* Update VM state */
vm->use_cpu_for_update = !!(adev->vm_manager.vm_update_mode &
AMDGPU_VM_USE_CPU_FOR_COMPUTE);
- vm->pte_support_ats = pte_support_ats;
DRM_DEBUG_DRIVER("VM update mode is %s\n",
vm->use_cpu_for_update ? "CPU" : "SDMA");
WARN_ONCE((vm->use_cpu_for_update && !amdgpu_gmc_vram_full_visible(&adev->gmc)),
--
2.17.1
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