[PATCH 19/21] drm/xe/eudebug: Implement vm_bind_op discovery

[Mika Kuoppala]

Follow the vm bind, vm_bind op sequence for
discovery process of a vm with the vmas it has.
Send events for ops and attach metadata if available.

v2: Fix bad op ref seqno (Christoph)

Signed-off-by: Mika Kuoppala <mika.kuoppala at linux.intel.com>
---
 drivers/gpu/drm/xe/xe_eudebug.c | 40 +++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_eudebug.c b/drivers/gpu/drm/xe/xe_eudebug.c
index f0bec8c8bba1..a80ffb64df15 100644
--- a/drivers/gpu/drm/xe/xe_eudebug.c
+++ b/drivers/gpu/drm/xe/xe_eudebug.c
@@ -3070,6 +3070,42 @@ void xe_eudebug_debug_metadata_destroy(struct xe_file *xef, struct xe_debug_meta
 	xe_eudebug_event_put(d, debug_metadata_destroy_event(d, xef, m));
 }
 
+static int vm_discover_binds(struct xe_eudebug *d, struct xe_vm *vm)
+{
+	struct drm_gpuva *va;
+	unsigned int num_ops = 0, send_ops = 0;
+	u64 ref_seqno = 0;
+	int err;
+
+	/* Currently only vm_bind_ioctl inserts vma's */
+	drm_gpuvm_for_each_va(va, &vm->gpuvm)
+		num_ops++;
+
+	if (!num_ops)
+		return 0;
+
+	err = vm_bind_event(d, vm, num_ops, &ref_seqno);
+	if (err)
+		return err;
+
+	drm_gpuvm_for_each_va(va, &vm->gpuvm) {
+		struct xe_vma *vma = container_of(va, struct xe_vma, gpuva);
+
+		if (send_ops >= num_ops)
+			break;
+
+		err = vm_bind_op(d, vm, DRM_XE_EUDEBUG_EVENT_CREATE, ref_seqno,
+				 xe_vma_start(vma), xe_vma_size(vma),
+				 &vma->debug_metadata);
+		if (err)
+			return err;
+
+		send_ops++;
+	}
+
+	return num_ops == send_ops ? 0 : -EINVAL;
+}
+
 static int discover_client(struct xe_eudebug *d, struct xe_file *xef)
 {
 	struct xe_debug_metadata *m;
@@ -3095,6 +3131,10 @@ static int discover_client(struct xe_eudebug *d, struct xe_file *xef)
 		err = vm_create_event(d, xef, vm);
 		if (err)
 			break;
+
+		err = vm_discover_binds(d, vm);
+		if (err)
+			break;
 	}
 	mutex_unlock(&xef->vm.lock);
 
-- 
2.34.1