Commit b46ef766 authored by Tomasz Lis's avatar Tomasz Lis Committed by Michał Winiarski
Browse files

drm/xe/vf: Rebase HWSP of all contexts after migration 



All contexts require an update due to GGTT range shift, as that
affects their HWSP.

The HW status page of a context contains GGTT references, which
need to be shifted to a new range (or re-computed using the
previously updated vma nodes). The references include ring start
address and indirect state address.

v2: move some functions to better matched files
v3: Add missing kerneldocs
v4: Style fix

Signed-off-by: default avatarTomasz Lis <tomasz.lis@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Michal Winiarski <michal.winiarski@intel.com>
Acked-by: default avatarSatyanarayana K V P <satyanarayana.k.v.p@intel.com>
Reviewed-by: default avatarMichal Winiarski <michal.winiarski@intel.com>
Link: https://lore.kernel.org/r/20250802031045.1127138-5-tomasz.lis@intel.com


Signed-off-by: default avatarMichał Winiarski <michal.winiarski@intel.com>
parent a0840b1c

drivers/gpu/drm/xe/xe_exec_queue.c

+13 −0
Original line number Diff line number Diff line
@@ -1076,3 +1076,16 @@ int xe_exec_queue_last_fence_test_dep(struct xe_exec_queue *q, struct xe_vm *vm) 


	return err;

}



/**

 * xe_exec_queue_contexts_hwsp_rebase - Re-compute GGTT references

 * within all LRCs of a queue.

 * @q: the &xe_exec_queue struct instance containing target LRCs

 */

void xe_exec_queue_contexts_hwsp_rebase(struct xe_exec_queue *q)

{

	int i;



	for (i = 0; i < q->width; ++i)

		xe_lrc_update_hwctx_regs_with_address(q->lrc[i]);

}

drivers/gpu/drm/xe/xe_exec_queue.h

+2 −0
Original line number Diff line number Diff line
@@ -90,4 +90,6 @@ int xe_exec_queue_last_fence_test_dep(struct xe_exec_queue *q, 
				      struct xe_vm *vm);

void xe_exec_queue_update_run_ticks(struct xe_exec_queue *q);



void xe_exec_queue_contexts_hwsp_rebase(struct xe_exec_queue *q);



#endif

drivers/gpu/drm/xe/xe_guc_submit.c

+16 −0
Original line number Diff line number Diff line
@@ -2505,3 +2505,19 @@ void xe_guc_submit_print(struct xe_guc *guc, struct drm_printer *p) 
		guc_exec_queue_print(q, p);

	mutex_unlock(&guc->submission_state.lock);

}



/**

 * xe_guc_contexts_hwsp_rebase - Re-compute GGTT references within all

 * exec queues registered to given GuC.

 * @guc: the &xe_guc struct instance

 */

void xe_guc_contexts_hwsp_rebase(struct xe_guc *guc)

{

	struct xe_exec_queue *q;

	unsigned long index;



	mutex_lock(&guc->submission_state.lock);

	xa_for_each(&guc->submission_state.exec_queue_lookup, index, q)

		xe_exec_queue_contexts_hwsp_rebase(q);

	mutex_unlock(&guc->submission_state.lock);

}

drivers/gpu/drm/xe/xe_guc_submit.h

+2 −0
Original line number Diff line number Diff line
@@ -46,4 +46,6 @@ xe_guc_exec_queue_snapshot_free(struct xe_guc_submit_exec_queue_snapshot *snapsh 
void xe_guc_submit_print(struct xe_guc *guc, struct drm_printer *p);

void xe_guc_register_exec_queue(struct xe_exec_queue *q, int ctx_type);



void xe_guc_contexts_hwsp_rebase(struct xe_guc *guc);



#endif

drivers/gpu/drm/xe/xe_lrc.c

+17 −0
Original line number Diff line number Diff line
@@ -1439,6 +1439,23 @@ void xe_lrc_destroy(struct kref *ref) 
	kfree(lrc);

}



/**

 * xe_lrc_update_hwctx_regs_with_address - Re-compute GGTT references within given LRC.

 * @lrc: the &xe_lrc struct instance

 */

void xe_lrc_update_hwctx_regs_with_address(struct xe_lrc *lrc)

{

	if (xe_lrc_has_indirect_ring_state(lrc)) {

		xe_lrc_write_ctx_reg(lrc, CTX_INDIRECT_RING_STATE,

				     __xe_lrc_indirect_ring_ggtt_addr(lrc));



		xe_lrc_write_indirect_ctx_reg(lrc, INDIRECT_CTX_RING_START,

					      __xe_lrc_ring_ggtt_addr(lrc));

	} else {

		xe_lrc_write_ctx_reg(lrc, CTX_RING_START, __xe_lrc_ring_ggtt_addr(lrc));

	}

}



void xe_lrc_set_ring_tail(struct xe_lrc *lrc, u32 tail)

{

	if (xe_lrc_has_indirect_ring_state(lrc))