[PATCH 2/2] drm/amdgpu: separate out vm pasid assignment
Nirmoy Das
nirmoy.das at amd.com
Tue Jun 29 15:19:07 UTC 2021
Use new helper function amdgpu_vm_set_pasid() to
assign vm pasid value. This also ensures that we don't free
a pasid from vm code as pasids are allocated somewhere else.
Signed-off-by: Nirmoy Das <nirmoy.das at amd.com>
---
.../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 13 ++++++++-
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 10 +++++--
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 28 +++----------------
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 4 +--
4 files changed, 26 insertions(+), 29 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index f96598279593..3a2ac7f66bbd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -1287,11 +1287,22 @@ int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct kgd_dev *kgd,
if (avm->process_info)
return -EINVAL;
+ /* Free the original amdgpu allocated pasid,
+ * will be replaced with kfd allocated pasid.
+ */
+ if (avm->pasid) {
+ amdgpu_pasid_free(avm->pasid);
+ amdgpu_vm_set_pasid(adev, avm, 0);
+ }
+
/* Convert VM into a compute VM */
- ret = amdgpu_vm_make_compute(adev, avm, pasid);
+ ret = amdgpu_vm_make_compute(adev, avm);
if (ret)
return ret;
+ ret = amdgpu_vm_set_pasid(adev, avm, pasid);
+ if (ret)
+ return ret;
/* Initialize KFD part of the VM and process info */
ret = init_kfd_vm(avm, process_info, ef);
if (ret)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index cbb932f97355..66bf8b0c56bb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -1178,10 +1178,14 @@ int amdgpu_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
pasid = 0;
}
- r = amdgpu_vm_init(adev, &fpriv->vm, pasid);
+ r = amdgpu_vm_init(adev, &fpriv->vm);
if (r)
goto error_pasid;
+ r = amdgpu_vm_set_pasid(adev, &fpriv->vm, pasid);
+ if (r)
+ goto error_vm;
+
fpriv->prt_va = amdgpu_vm_bo_add(adev, &fpriv->vm, NULL);
if (!fpriv->prt_va) {
r = -ENOMEM;
@@ -1209,8 +1213,10 @@ int amdgpu_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
amdgpu_vm_fini(adev, &fpriv->vm);
error_pasid:
- if (pasid)
+ if (pasid) {
amdgpu_pasid_free(pasid);
+ amdgpu_vm_set_pasid(adev, &fpriv->vm, 0);
+ }
kfree(fpriv);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index fd92ff27931a..1dccede6387e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -2899,14 +2899,13 @@ long amdgpu_vm_wait_idle(struct amdgpu_vm *vm, long timeout)
*
* @adev: amdgpu_device pointer
* @vm: requested vm
- * @pasid: Process address space identifier
*
* Init @vm fields.
*
* Returns:
* 0 for success, error for failure.
*/
-int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm, u32 pasid)
+int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm)
{
struct amdgpu_bo *root_bo;
struct amdgpu_bo_vm *root;
@@ -2980,10 +2979,6 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm, u32 pasid)
amdgpu_bo_unreserve(vm->root.bo);
- r = amdgpu_vm_set_pasid(adev, vm, pasid);
- if (r)
- goto error_free_root;
-
INIT_KFIFO(vm->faults);
return 0;
@@ -3039,7 +3034,6 @@ static int amdgpu_vm_check_clean_reserved(struct amdgpu_device *adev,
*
* @adev: amdgpu_device pointer
* @vm: requested vm
- * @pasid: pasid to use
*
* This only works on GFX VMs that don't have any BOs added and no
* page tables allocated yet.
@@ -3047,7 +3041,6 @@ static int amdgpu_vm_check_clean_reserved(struct amdgpu_device *adev,
* Changes the following VM parameters:
* - use_cpu_for_update
* - pte_supports_ats
- * - pasid (old PASID is released, because compute manages its own PASIDs)
*
* Reinitializes the page directory to reflect the changed ATS
* setting.
@@ -3055,8 +3048,7 @@ static int amdgpu_vm_check_clean_reserved(struct amdgpu_device *adev,
* Returns:
* 0 for success, -errno for errors.
*/
-int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm,
- u32 pasid)
+int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm)
{
bool pte_support_ats = (adev->asic_type == CHIP_RAVEN);
int r;
@@ -3070,16 +3062,6 @@ int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm,
if (r)
goto unreserve_bo;
- /* Free the original amdgpu allocated pasid,
- * will be replaced with kfd allocated pasid.
- */
- if (vm->pasid)
- amdgpu_pasid_free(vm->pasid);
-
- r = amdgpu_vm_set_pasid(adev, vm, pasid);
- if (r)
- goto unreserve_bo;
-
/* Check if PD needs to be reinitialized and do it before
* changing any other state, in case it fails.
*/
@@ -3089,7 +3071,7 @@ int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm,
to_amdgpu_bo_vm(vm->root.bo),
false);
if (r)
- goto free_pasid_entry;
+ goto unreserve_bo;
}
/* Update VM state */
@@ -3106,7 +3088,7 @@ int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm,
r = amdgpu_bo_sync_wait(vm->root.bo,
AMDGPU_FENCE_OWNER_UNDEFINED, true);
if (r)
- goto free_pasid_entry;
+ goto unreserve_bo;
vm->update_funcs = &amdgpu_vm_cpu_funcs;
} else {
@@ -3121,8 +3103,6 @@ int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm,
goto unreserve_bo;
-free_pasid_entry:
- amdgpu_vm_set_pasid(adev, vm, 0);
unreserve_bo:
amdgpu_bo_unreserve(vm->root.bo);
return r;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
index 8e8bc132e590..a0bceccaa6b5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
@@ -378,8 +378,8 @@ int amdgpu_vm_set_pasid(struct amdgpu_device *adev, struct amdgpu_vm *vm,
unsigned long pasid);
long amdgpu_vm_wait_idle(struct amdgpu_vm *vm, long timeout);
-int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm, u32 pasid);
-int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm, u32 pasid);
+int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm);
+int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm);
void amdgpu_vm_release_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm);
void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm);
void amdgpu_vm_get_pd_bo(struct amdgpu_vm *vm,
--
2.32.0
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