[PATCH 2/2] drm/amdkfd: Query vmid pasid mapping through stored info for non HWS

[Zhao, Yong]

Because we record the mapping under non HWS mode in the software,
we can query pasid through vmid using the stored mapping instead of
reading from ATC registers.

This also prepares for the defeatured ATC block in future ASICs.

Change-Id: I781cb9d30dc0cc93379908ff1cf8da798bb26f13
Signed-off-by: Yong Zhao <Yong.Zhao at amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c
index ab8a695c4a3c..9fff01c0fb9e 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c
@@ -58,8 +58,8 @@ static bool event_interrupt_isr_v9(struct kfd_dev *dev,
 		memcpy(patched_ihre, ih_ring_entry,
 				dev->device_info->ih_ring_entry_size);
 
-		pasid = dev->kfd2kgd->get_atc_vmid_pasid_mapping_pasid(
-				dev->kgd, vmid);
+		pasid = dev->dqm->vmid_pasid[vmid];
+		WARN_ONCE(pasid == 0, "No PASID assigned for VMID %d\n", vmid);
 
 		/* Patch the pasid field */
 		patched_ihre[3] = cpu_to_le32((le32_to_cpu(patched_ihre[3])
-- 
2.17.1