[PATCH i-g-t v2 10/66] lib/xe_eudebug: Add support for user fence acking

[Christoph Manszewski <christoph.manszewski@intel.com>]

If the debugee uses user fences for synchronization, the debugger will
recieve a 'UFENCE_EVENT' and the fence won't be released untill the
debugger acks it. Note that for the fence to release, both the job
completion and debugger ack are required. Add a library function
to ack user fences.

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Christoph Manszewski <christoph.manszewski@intel.com>
Cc: Dominik Grzegorzek <dominik.grzegorzek@intel.com>
---
 lib/xe/xe_eudebug.c | 14 ++++++++++++++
 lib/xe/xe_eudebug.h |  2 ++
 2 files changed, 16 insertions(+)

diff --git a/lib/xe/xe_eudebug.c b/lib/xe/xe_eudebug.c
index 8164a2d50..af7cc5fc4 100644
--- a/lib/xe/xe_eudebug.c
+++ b/lib/xe/xe_eudebug.c
@@ -2037,3 +2037,17 @@ void xe_eudebug_client_metadata_destroy(struct xe_eudebug_client *c, int fd,
 
 	metadata_event(c, DRM_XE_EUDEBUG_EVENT_DESTROY, fd, id, type, len);
 }
+
+void xe_eudebug_ack_ufence(int debugfd,
+			   const struct drm_xe_eudebug_event_vm_bind_ufence *f)
+{
+	struct drm_xe_eudebug_ack_event ack = { 0, };
+	char event_str[XE_EUDEBUG_EVENT_STRING_MAX_LEN];
+
+	ack.type = f->base.type;
+	ack.seqno = f->base.seqno;
+
+	xe_eudebug_event_to_str((void *)f, event_str, XE_EUDEBUG_EVENT_STRING_MAX_LEN);
+	igt_debug("delivering ack for event: %s\n", event_str);
+	igt_assert_eq(igt_ioctl(debugfd, DRM_XE_EUDEBUG_IOCTL_ACK_EVENT, &ack), 0);
+}
diff --git a/lib/xe/xe_eudebug.h b/lib/xe/xe_eudebug.h
index 24336981f..ec75634f5 100644
--- a/lib/xe/xe_eudebug.h
+++ b/lib/xe/xe_eudebug.h
@@ -167,6 +167,8 @@ void xe_eudebug_client_vm_bind_op_metadata_event(struct xe_eudebug_client *c,
 						 uint64_t metadata_handle, uint64_t metadata_cookie);
 void xe_eudebug_client_vm_bind_ufence_event(struct xe_eudebug_client *c, uint32_t event_flags,
 					    uint64_t ref_seqno);
+void xe_eudebug_ack_ufence(int debugfd,
+			   const struct drm_xe_eudebug_event_vm_bind_ufence *f);
 
 void xe_eudebug_client_vm_bind_flags(struct xe_eudebug_client *c, int fd, uint32_t vm,
 				     uint32_t bo, uint64_t offset,
-- 
2.34.1