diff options
Diffstat (limited to 'drivers/gpu/drm/xe/xe_gsc_submit.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_gsc_submit.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_gsc_submit.c b/drivers/gpu/drm/xe/xe_gsc_submit.c index 348994b271be..9ede483d37ef 100644 --- a/drivers/gpu/drm/xe/xe_gsc_submit.c +++ b/drivers/gpu/drm/xe/xe_gsc_submit.c @@ -8,6 +8,7 @@ #include <linux/poison.h> #include "abi/gsc_command_header_abi.h" +#include "xe_assert.h" #include "xe_bb.h" #include "xe_exec_queue.h" #include "xe_gt_printk.h" @@ -41,6 +42,21 @@ gsc_to_gt(struct xe_gsc *gsc) } /** + * xe_gsc_create_host_session_id - Creates a random 64 bit host_session id with + * bits 56-63 masked. + * + * Returns: random host_session_id which can be used to send messages to gsc cs + */ +u64 xe_gsc_create_host_session_id(void) +{ + u64 host_session_id; + + get_random_bytes(&host_session_id, sizeof(u64)); + host_session_id &= ~HOST_SESSION_CLIENT_MASK; + return host_session_id; +} + +/** * xe_gsc_emit_header - write the MTL GSC header in memory * @xe: the Xe device * @map: the iosys map to write to |