Commit d8f94cb0 authored by Ashley Smith's avatar Ashley Smith Committed by Boris Brezillon
Browse files

drm/panthor: Enable timestamp propagation 



Set the GLB_COUNTER_EN bit to enable coherent propagation of GPU
timestamp values to shader cores. This is a prerequisite for exposing
device-coherent timestamp queries.

Bump the version to 1.6 so userspace can detect support.

v2:
- GLB_COUNTER_EN is not a toggle bit move to panthor_fw_update_reqs

Signed-off-by: default avatarAshley Smith <ashley.smith@collabora.com>
Reviewed-by: default avatarSteven Price <steven.price@arm.com>
Link: https://patch.msgid.link/20251127115019.2113040-1-ashley.smith@collabora.com


Signed-off-by: default avatarBoris Brezillon <boris.brezillon@collabora.com>
parent 88e721ab

drivers/gpu/drm/panthor/panthor_drv.c

+2 −1
Original line number Diff line number Diff line
@@ -1604,6 +1604,7 @@ static void panthor_debugfs_init(struct drm_minor *minor) 
 * - 1.3 - adds DRM_PANTHOR_GROUP_STATE_INNOCENT flag

 * - 1.4 - adds DRM_IOCTL_PANTHOR_BO_SET_LABEL ioctl

 * - 1.5 - adds DRM_PANTHOR_SET_USER_MMIO_OFFSET ioctl

 * - 1.6 - enables GLB_COUNTER_EN

 */

static const struct drm_driver panthor_drm_driver = {

	.driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ |
@@ -1617,7 +1618,7 @@ static const struct drm_driver panthor_drm_driver = { 
	.name = "panthor",

	.desc = "Panthor DRM driver",

	.major = 1,

	.minor = 5,

	.minor = 6,



	.gem_create_object = panthor_gem_create_object,

	.gem_prime_import_sg_table = drm_gem_shmem_prime_import_sg_table,

drivers/gpu/drm/panthor/panthor_fw.c

+2 −1
Original line number Diff line number Diff line
@@ -1044,7 +1044,8 @@ static void panthor_fw_init_global_iface(struct panthor_device *ptdev) 
	if (panthor_fw_has_glb_state(ptdev))

		glb_iface->input->ack_irq_mask |= GLB_STATE_MASK;



	panthor_fw_update_reqs(glb_iface, req, GLB_IDLE_EN, GLB_IDLE_EN);

	panthor_fw_update_reqs(glb_iface, req, GLB_IDLE_EN | GLB_COUNTER_EN,

			       GLB_IDLE_EN | GLB_COUNTER_EN);

	panthor_fw_toggle_reqs(glb_iface, req, ack,

			       GLB_CFG_ALLOC_EN |

			       GLB_CFG_POWEROFF_TIMER |