[Intel-xe] [PATCH 04/26] drm/xe: Add ops_execute function which returns a fence
Matthew Brost
matthew.brost at intel.com
Thu Oct 26 04:01:51 UTC 2023
Add ops_execute function which returns a fence. This be helpful to
initiate all binds (VM bind IOCTL, rebinds in exec IOCTL, rebinds in
preempt rebind worker, and rebinds in pagefaults) via a gpuva ops list.
Returning a fence is needed in various paths.
Signed-off-by: Matthew Brost <matthew.brost at intel.com>
---
drivers/gpu/drm/xe/xe_vm.c | 210 +++++++++++++++++++------------------
1 file changed, 109 insertions(+), 101 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index f3f59df20a21..fa243d4e6405 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -1842,21 +1842,22 @@ static bool xe_vm_sync_mode(struct xe_vm *vm, struct xe_exec_queue *q)
!(vm->flags & XE_VM_FLAG_ASYNC_DEFAULT);
}
-static int __xe_vm_bind(struct xe_vm *vm, struct xe_vma *vma,
- struct xe_exec_queue *q, struct xe_sync_entry *syncs,
- u32 num_syncs, bool immediate, bool first_op,
- bool last_op)
+static struct dma_fence *
+xe_vm_bind(struct xe_vm *vm, struct xe_vma *vma, struct xe_exec_queue *q,
+ struct xe_bo *bo, struct xe_sync_entry *syncs, u32 num_syncs,
+ bool immediate, bool first_op, bool last_op)
{
struct dma_fence *fence;
struct xe_exec_queue *wait_exec_queue = to_wait_exec_queue(vm, q);
xe_vm_assert_held(vm);
+ xe_bo_assert_held(bo);
if (immediate) {
fence = xe_vm_bind_vma(vma, q, syncs, num_syncs, first_op,
last_op);
if (IS_ERR(fence))
- return PTR_ERR(fence);
+ return fence;
} else {
int i;
@@ -1873,26 +1874,14 @@ static int __xe_vm_bind(struct xe_vm *vm, struct xe_vma *vma,
xe_exec_queue_last_fence_set(wait_exec_queue, vm, fence);
if (last_op && xe_vm_sync_mode(vm, q))
dma_fence_wait(fence, true);
- dma_fence_put(fence);
- return 0;
-}
-
-static int xe_vm_bind(struct xe_vm *vm, struct xe_vma *vma, struct xe_exec_queue *q,
- struct xe_bo *bo, struct xe_sync_entry *syncs,
- u32 num_syncs, bool immediate, bool first_op,
- bool last_op)
-{
- xe_vm_assert_held(vm);
- xe_bo_assert_held(bo);
-
- return __xe_vm_bind(vm, vma, q, syncs, num_syncs, immediate, first_op,
- last_op);
+ return fence;
}
-static int xe_vm_unbind(struct xe_vm *vm, struct xe_vma *vma,
- struct xe_exec_queue *q, struct xe_sync_entry *syncs,
- u32 num_syncs, bool first_op, bool last_op)
+static struct dma_fence *
+xe_vm_unbind(struct xe_vm *vm, struct xe_vma *vma,
+ struct xe_exec_queue *q, struct xe_sync_entry *syncs,
+ u32 num_syncs, bool first_op, bool last_op)
{
struct dma_fence *fence;
struct xe_exec_queue *wait_exec_queue = to_wait_exec_queue(vm, q);
@@ -1902,16 +1891,15 @@ static int xe_vm_unbind(struct xe_vm *vm, struct xe_vma *vma,
fence = xe_vm_unbind_vma(vma, q, syncs, num_syncs, first_op, last_op);
if (IS_ERR(fence))
- return PTR_ERR(fence);
+ return fence;
xe_vma_destroy(vma, fence);
if (last_op)
xe_exec_queue_last_fence_set(wait_exec_queue, vm, fence);
if (last_op && xe_vm_sync_mode(vm, q))
dma_fence_wait(fence, true);
- dma_fence_put(fence);
- return 0;
+ return fence;
}
#define ALL_DRM_XE_VM_CREATE_FLAGS (DRM_XE_VM_CREATE_SCRATCH_PAGE | \
@@ -2051,10 +2039,11 @@ static const u32 region_to_mem_type[] = {
XE_PL_VRAM1,
};
-static int xe_vm_prefetch(struct xe_vm *vm, struct xe_vma *vma,
- struct xe_exec_queue *q, u32 region,
- struct xe_sync_entry *syncs, u32 num_syncs,
- bool first_op, bool last_op)
+static struct dma_fence *
+xe_vm_prefetch(struct xe_vm *vm, struct xe_vma *vma,
+ struct xe_exec_queue *q, u32 region,
+ struct xe_sync_entry *syncs, u32 num_syncs,
+ bool first_op, bool last_op)
{
struct xe_exec_queue *wait_exec_queue = to_wait_exec_queue(vm, q);
int err;
@@ -2064,26 +2053,24 @@ static int xe_vm_prefetch(struct xe_vm *vm, struct xe_vma *vma,
if (!xe_vma_has_no_bo(vma)) {
err = xe_bo_migrate(xe_vma_bo(vma), region_to_mem_type[region]);
if (err)
- return err;
+ return ERR_PTR(err);
}
if (vma->tile_mask != (vma->tile_present & ~vma->usm.tile_invalidated)) {
return xe_vm_bind(vm, vma, q, xe_vma_bo(vma), syncs, num_syncs,
true, first_op, last_op);
} else {
+ struct dma_fence *fence =
+ xe_exec_queue_last_fence_get(wait_exec_queue, vm);
int i;
/* Nothing to do, signal fences now */
if (last_op) {
- for (i = 0; i < num_syncs; i++) {
- struct dma_fence *fence =
- xe_exec_queue_last_fence_get(wait_exec_queue, vm);
-
+ for (i = 0; i < num_syncs; i++)
xe_sync_entry_signal(&syncs[i], NULL, fence);
- }
}
- return 0;
+ return fence;
}
}
@@ -2523,10 +2510,10 @@ static int vm_bind_ioctl_ops_parse(struct xe_vm *vm, struct xe_exec_queue *q,
return 0;
}
-static int op_execute(struct xe_vm *vm, struct xe_vma *vma,
- struct xe_vma_op *op)
+static struct dma_fence *op_execute(struct xe_vm *vm, struct xe_vma *vma,
+ struct xe_vma_op *op)
{
- int err;
+ struct dma_fence *fence;
lockdep_assert_held_write(&vm->lock);
xe_vm_assert_held(vm);
@@ -2534,11 +2521,12 @@ static int op_execute(struct xe_vm *vm, struct xe_vma *vma,
switch (op->base.op) {
case DRM_GPUVA_OP_MAP:
- err = xe_vm_bind(vm, vma, op->q, xe_vma_bo(vma),
- op->syncs, op->num_syncs,
- op->map.immediate || !xe_vm_in_fault_mode(vm),
- op->flags & XE_VMA_OP_FIRST,
- op->flags & XE_VMA_OP_LAST);
+ fence = xe_vm_bind(vm, vma, op->q, xe_vma_bo(vma),
+ op->syncs, op->num_syncs,
+ op->map.immediate ||
+ !xe_vm_in_fault_mode(vm),
+ op->flags & XE_VMA_OP_FIRST,
+ op->flags & XE_VMA_OP_LAST);
break;
case DRM_GPUVA_OP_REMAP:
{
@@ -2548,37 +2536,37 @@ static int op_execute(struct xe_vm *vm, struct xe_vma *vma,
if (!op->remap.unmap_done) {
if (prev || next)
vma->gpuva.flags |= XE_VMA_FIRST_REBIND;
- err = xe_vm_unbind(vm, vma, op->q, op->syncs,
- op->num_syncs,
- op->flags & XE_VMA_OP_FIRST,
- op->flags & XE_VMA_OP_LAST &&
- !prev && !next);
- if (err)
+ fence = xe_vm_unbind(vm, vma, op->q, op->syncs,
+ op->num_syncs,
+ op->flags & XE_VMA_OP_FIRST,
+ op->flags & XE_VMA_OP_LAST &&
+ !prev && !next);
+ if (IS_ERR(fence))
break;
op->remap.unmap_done = true;
}
if (prev) {
op->remap.prev->gpuva.flags |= XE_VMA_LAST_REBIND;
- err = xe_vm_bind(vm, op->remap.prev, op->q,
- xe_vma_bo(op->remap.prev), op->syncs,
- op->num_syncs, true, false,
- op->flags & XE_VMA_OP_LAST && !next);
+ fence = xe_vm_bind(vm, op->remap.prev, op->q,
+ xe_vma_bo(op->remap.prev), op->syncs,
+ op->num_syncs, true, false,
+ op->flags & XE_VMA_OP_LAST && !next);
op->remap.prev->gpuva.flags &= ~XE_VMA_LAST_REBIND;
- if (err)
+ if (IS_ERR(fence))
break;
op->remap.prev = NULL;
}
if (next) {
op->remap.next->gpuva.flags |= XE_VMA_LAST_REBIND;
- err = xe_vm_bind(vm, op->remap.next, op->q,
- xe_vma_bo(op->remap.next),
- op->syncs, op->num_syncs,
- true, false,
- op->flags & XE_VMA_OP_LAST);
+ fence = xe_vm_bind(vm, op->remap.next, op->q,
+ xe_vma_bo(op->remap.next),
+ op->syncs, op->num_syncs,
+ true, false,
+ op->flags & XE_VMA_OP_LAST);
op->remap.next->gpuva.flags &= ~XE_VMA_LAST_REBIND;
- if (err)
+ if (IS_ERR(fence))
break;
op->remap.next = NULL;
}
@@ -2586,61 +2574,66 @@ static int op_execute(struct xe_vm *vm, struct xe_vma *vma,
break;
}
case DRM_GPUVA_OP_UNMAP:
- err = xe_vm_unbind(vm, vma, op->q, op->syncs,
- op->num_syncs, op->flags & XE_VMA_OP_FIRST,
- op->flags & XE_VMA_OP_LAST);
+ fence = xe_vm_unbind(vm, vma, op->q, op->syncs,
+ op->num_syncs, op->flags & XE_VMA_OP_FIRST,
+ op->flags & XE_VMA_OP_LAST);
break;
case DRM_GPUVA_OP_PREFETCH:
- err = xe_vm_prefetch(vm, vma, op->q, op->prefetch.region,
- op->syncs, op->num_syncs,
- op->flags & XE_VMA_OP_FIRST,
- op->flags & XE_VMA_OP_LAST);
+ fence = xe_vm_prefetch(vm, vma, op->q, op->prefetch.region,
+ op->syncs, op->num_syncs,
+ op->flags & XE_VMA_OP_FIRST,
+ op->flags & XE_VMA_OP_LAST);
break;
default:
drm_warn(&vm->xe->drm, "NOT POSSIBLE");
}
- if (err)
+ if (IS_ERR(fence))
trace_xe_vma_fail(vma);
- return err;
+ return fence;
}
-static int __xe_vma_op_execute(struct xe_vm *vm, struct xe_vma *vma,
- struct xe_vma_op *op)
+static struct dma_fence *
+__xe_vma_op_execute(struct xe_vm *vm, struct xe_vma *vma,
+ struct xe_vma_op *op)
{
+ struct dma_fence *fence;
int err;
retry_userptr:
- err = op_execute(vm, vma, op);
- if (err == -EAGAIN && xe_vma_is_userptr(vma)) {
+ fence = op_execute(vm, vma, op);
+ if (IS_ERR(fence) && PTR_ERR(fence) == -EAGAIN &&
+ xe_vma_is_userptr(vma)) {
lockdep_assert_held_write(&vm->lock);
err = xe_vma_userptr_pin_pages(vma);
if (!err)
goto retry_userptr;
+ fence = ERR_PTR(err);
trace_xe_vma_fail(vma);
}
- return err;
+ return fence;
}
-static int xe_vma_op_execute(struct xe_vm *vm, struct xe_vma_op *op)
+static struct dma_fence *
+xe_vma_op_execute(struct xe_vm *vm, struct xe_vma_op *op)
{
- int ret = 0;
+ struct dma_fence *fence = ERR_PTR(-ENOMEM);
lockdep_assert_held_write(&vm->lock);
#ifdef TEST_VM_ASYNC_OPS_ERROR
if (op->inject_error) {
op->inject_error = false;
- return -ENOMEM;
+ return fence;
}
#endif
switch (op->base.op) {
case DRM_GPUVA_OP_MAP:
- ret = __xe_vma_op_execute(vm, op->map.vma, op);
+ fence = __xe_vma_op_execute(vm, op->map.vma, op);
break;
case DRM_GPUVA_OP_REMAP:
{
@@ -2653,23 +2646,23 @@ static int xe_vma_op_execute(struct xe_vm *vm, struct xe_vma_op *op)
else
vma = op->remap.next;
- ret = __xe_vma_op_execute(vm, vma, op);
+ fence = __xe_vma_op_execute(vm, vma, op);
break;
}
case DRM_GPUVA_OP_UNMAP:
- ret = __xe_vma_op_execute(vm, gpuva_to_vma(op->base.unmap.va),
- op);
+ fence = __xe_vma_op_execute(vm, gpuva_to_vma(op->base.unmap.va),
+ op);
break;
case DRM_GPUVA_OP_PREFETCH:
- ret = __xe_vma_op_execute(vm,
- gpuva_to_vma(op->base.prefetch.va),
- op);
+ fence = __xe_vma_op_execute(vm,
+ gpuva_to_vma(op->base.prefetch.va),
+ op);
break;
default:
drm_warn(&vm->xe->drm, "NOT POSSIBLE");
}
- return ret;
+ return fence;
}
static void xe_vma_op_cleanup(struct xe_vm *vm, struct xe_vma_op *op)
@@ -2844,11 +2837,32 @@ static int vm_bind_ioctl_ops_lock(struct drm_exec *exec,
return err;
}
+static struct dma_fence *ops_execute(struct xe_vm *vm,
+ struct list_head *ops_list,
+ bool cleanup)
+{
+ struct xe_vma_op *op, *next;
+ struct dma_fence *fence = NULL;
+
+ list_for_each_entry_safe(op, next, ops_list, link) {
+ fence = xe_vma_op_execute(vm, op);
+ if (IS_ERR(fence)) {
+ drm_warn(&vm->xe->drm, "VM op(%d) failed with %ld",
+ op->base.op, PTR_ERR(fence));
+ return ERR_PTR(-ENOSPC);
+ }
+ if (cleanup)
+ xe_vma_op_cleanup(vm, op);
+ }
+
+ return fence;
+}
+
static int vm_bind_ioctl_ops_execute(struct xe_vm *vm,
struct list_head *ops_list)
{
struct drm_exec exec;
- struct xe_vma_op *op, *next;
+ struct dma_fence *fence;
int err;
lockdep_assert_held_write(&vm->lock);
@@ -2857,23 +2871,17 @@ static int vm_bind_ioctl_ops_execute(struct xe_vm *vm,
if (err)
return err;
- list_for_each_entry_safe(op, next, ops_list, link) {
- err = xe_vma_op_execute(vm, op);
- if (err) {
- drm_warn(&vm->xe->drm, "VM op(%d) failed with %d",
- op->base.op, err);
- /*
- * FIXME: Killing VM rather than proper error handling
- */
- xe_vm_kill(vm, false);
- err = -ENOSPC;
- goto unlock;
- }
- xe_vma_op_cleanup(vm, op);
+ fence = ops_execute(vm, ops_list, true);
+ if (IS_ERR(fence)) {
+ err = PTR_ERR(fence);
+ /* FIXME: Killing VM rather than proper error handling */
+ xe_vm_kill(vm, false);
+ } else {
+ dma_fence_put(fence);
}
-unlock:
drm_exec_fini(&exec);
+
return err;
}
--
2.34.1
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