}
}
+#define XE_INVALID_VMA ((struct xe_vma *)(0xdeaddeadull))
+
static void xe_pt_commit_prepare_locks_assert(struct xe_vma *vma)
{
- struct xe_vm *vm = xe_vma_vm(vma);
+ struct xe_vm *vm;
+ if (vma == XE_INVALID_VMA)
+ return;
+
+ vm = xe_vma_vm(vma);
lockdep_assert_held(&vm->lock);
if (!xe_vma_has_no_bo(vma))
static void xe_pt_commit_locks_assert(struct xe_vma *vma)
{
- struct xe_vm *vm = xe_vma_vm(vma);
+ struct xe_vm *vm;
+ if (vma == XE_INVALID_VMA)
+ return;
+
+ vm = xe_vma_vm(vma);
xe_pt_commit_prepare_locks_assert(vma);
if (xe_vma_is_userptr(vma))
int j_ = j + entries[i].ofs;
pt_dir->children[j_] = pt_dir->staging[j_];
- xe_pt_destroy(oldpte, xe_vma_vm(vma)->flags, deferred);
+ xe_pt_destroy(oldpte, (vma == XE_INVALID_VMA) ? 0 :
+ xe_vma_vm(vma)->flags, deferred);
}
}
}
list_for_each_entry(op, &vops->list, link) {
struct xe_svm_range *range = op->map_range.range;
+ if (op->subop == XE_VMA_SUBOP_UNMAP_RANGE)
+ continue;
+
xe_assert(vm->xe, xe_vma_is_cpu_addr_mirror(op->map_range.vma));
xe_assert(vm->xe, op->subop == XE_VMA_SUBOP_MAP_RANGE);
* xe_pt_stage_unbind() - Build page-table update structures for an unbind
* operation
* @tile: The tile we're unbinding for.
+ * @vm: The vm
* @vma: The vma we're unbinding.
+ * @range: The range we're unbinding.
* @entries: Caller-provided storage for the update structures.
*
* Builds page-table update structures for an unbind operation. The function
*
* Return: The number of entries used.
*/
-static unsigned int xe_pt_stage_unbind(struct xe_tile *tile, struct xe_vma *vma,
+static unsigned int xe_pt_stage_unbind(struct xe_tile *tile,
+ struct xe_vm *vm,
+ struct xe_vma *vma,
+ struct xe_svm_range *range,
struct xe_vm_pgtable_update *entries)
{
+ u64 start = range ? range->base.itree.start : xe_vma_start(vma);
+ u64 end = range ? range->base.itree.last + 1 : xe_vma_end(vma);
struct xe_pt_stage_unbind_walk xe_walk = {
.base = {
.ops = &xe_pt_stage_unbind_ops,
.staging = true,
},
.tile = tile,
- .modified_start = xe_vma_start(vma),
- .modified_end = xe_vma_end(vma),
+ .modified_start = start,
+ .modified_end = end,
.wupd.entries = entries,
};
- struct xe_pt *pt = xe_vma_vm(vma)->pt_root[tile->id];
+ struct xe_pt *pt = vm->pt_root[tile->id];
- (void)xe_pt_walk_shared(&pt->base, pt->level, xe_vma_start(vma),
- xe_vma_end(vma), &xe_walk.base);
+ (void)xe_pt_walk_shared(&pt->base, pt->level, start, end,
+ &xe_walk.base);
return xe_walk.wupd.num_used_entries;
}
"Preparing unbind, with range [%llx...%llx)\n",
xe_vma_start(vma), xe_vma_end(vma) - 1);
- /*
- * Wait for invalidation to complete. Can corrupt internal page table
- * state if an invalidation is running while preparing an unbind.
- */
- if (xe_vma_is_userptr(vma) && xe_vm_in_fault_mode(xe_vma_vm(vma)))
- mmu_interval_read_begin(&to_userptr_vma(vma)->userptr.notifier);
-
pt_op->vma = vma;
pt_op->bind = false;
pt_op->rebind = false;
if (err)
return err;
- pt_op->num_entries = xe_pt_stage_unbind(tile, vma, pt_op->entries);
+ pt_op->num_entries = xe_pt_stage_unbind(tile, xe_vma_vm(vma),
+ vma, NULL, pt_op->entries);
xe_vm_dbg_print_entries(tile_to_xe(tile), pt_op->entries,
pt_op->num_entries, false);
return 0;
}
+static int unbind_range_prepare(struct xe_vm *vm,
+ struct xe_tile *tile,
+ struct xe_vm_pgtable_update_ops *pt_update_ops,
+ struct xe_svm_range *range)
+{
+ u32 current_op = pt_update_ops->current_op;
+ struct xe_vm_pgtable_update_op *pt_op = &pt_update_ops->ops[current_op];
+
+ if (!(range->tile_present & BIT(tile->id)))
+ return 0;
+
+ vm_dbg(&vm->xe->drm,
+ "Preparing unbind, with range [%lx...%lx)\n",
+ range->base.itree.start, range->base.itree.last);
+
+ pt_op->vma = XE_INVALID_VMA;
+ pt_op->bind = false;
+ pt_op->rebind = false;
+
+ pt_op->num_entries = xe_pt_stage_unbind(tile, vm, NULL, range,
+ pt_op->entries);
+
+ xe_vm_dbg_print_entries(tile_to_xe(tile), pt_op->entries,
+ pt_op->num_entries, false);
+ xe_pt_update_ops_rfence_interval(pt_update_ops, range->base.itree.start,
+ range->base.itree.last + 1);
+ ++pt_update_ops->current_op;
+ pt_update_ops->needs_svm_lock = true;
+ pt_update_ops->needs_invalidation = true;
+
+ xe_pt_commit_prepare_unbind(XE_INVALID_VMA, pt_op->entries,
+ pt_op->num_entries);
+
+ return 0;
+}
+
static int op_prepare(struct xe_vm *vm,
struct xe_tile *tile,
struct xe_vm_pgtable_update_ops *pt_update_ops,
err = bind_range_prepare(vm, tile, pt_update_ops,
op->map_range.vma,
op->map_range.range);
+ } else if (op->subop == XE_VMA_SUBOP_UNMAP_RANGE) {
+ err = unbind_range_prepare(vm, tile, pt_update_ops,
+ op->unmap_range.range);
}
break;
default:
if (op->subop == XE_VMA_SUBOP_MAP_RANGE) {
op->map_range.range->tile_present |= BIT(tile->id);
op->map_range.range->tile_invalidated &= ~BIT(tile->id);
+ } else if (op->subop == XE_VMA_SUBOP_UNMAP_RANGE) {
+ op->unmap_range.range->tile_present &= ~BIT(tile->id);
}
break;
}
return fence;
}
+static void xe_vm_populate_range_unbind(struct xe_vma_op *op,
+ struct xe_svm_range *range)
+{
+ INIT_LIST_HEAD(&op->link);
+ op->tile_mask = range->tile_present;
+ op->base.op = DRM_GPUVA_OP_DRIVER;
+ op->subop = XE_VMA_SUBOP_UNMAP_RANGE;
+ op->unmap_range.range = range;
+}
+
+static int
+xe_vm_ops_add_range_unbind(struct xe_vma_ops *vops,
+ struct xe_svm_range *range)
+{
+ struct xe_vma_op *op;
+
+ op = kzalloc(sizeof(*op), GFP_KERNEL);
+ if (!op)
+ return -ENOMEM;
+
+ xe_vm_populate_range_unbind(op, range);
+ list_add_tail(&op->link, &vops->list);
+ xe_vma_ops_incr_pt_update_ops(vops, range->tile_present);
+
+ return 0;
+}
+
+/**
+ * xe_vm_range_unbind() - VM range unbind
+ * @vm: The VM which the range belongs to.
+ * @range: SVM range to rebind.
+ *
+ * Unbind SVM range removing the GPU page tables for the range.
+ *
+ * Return: dma fence for unbind to signal completion on succees, ERR_PTR on
+ * failure
+ */
+struct dma_fence *xe_vm_range_unbind(struct xe_vm *vm,
+ struct xe_svm_range *range)
+{
+ struct dma_fence *fence = NULL;
+ struct xe_vma_ops vops;
+ struct xe_vma_op *op, *next_op;
+ struct xe_tile *tile;
+ u8 id;
+ int err;
+
+ lockdep_assert_held(&vm->lock);
+ xe_vm_assert_held(vm);
+ xe_assert(vm->xe, xe_vm_in_fault_mode(vm));
+
+ if (!range->tile_present)
+ return dma_fence_get_stub();
+
+ xe_vma_ops_init(&vops, vm, NULL, NULL, 0);
+ for_each_tile(tile, vm->xe, id) {
+ vops.pt_update_ops[id].wait_vm_bookkeep = true;
+ vops.pt_update_ops[tile->id].q =
+ xe_tile_migrate_exec_queue(tile);
+ }
+
+ err = xe_vm_ops_add_range_unbind(&vops, range);
+ if (err)
+ return ERR_PTR(err);
+
+ err = xe_vma_ops_alloc(&vops, false);
+ if (err) {
+ fence = ERR_PTR(err);
+ goto free_ops;
+ }
+
+ fence = ops_execute(vm, &vops);
+
+free_ops:
+ list_for_each_entry_safe(op, next_op, &vops.list, link) {
+ list_del(&op->link);
+ kfree(op);
+ }
+ xe_vma_ops_fini(&vops);
+
+ return fence;
+}
+
static void xe_vma_free(struct xe_vma *vma)
{
if (xe_vma_is_userptr(vma))
projects / linux-block.git / commitdiff