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

[Zhao, Yong]

Because we record the mapping 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 | 5 +++--
 1 file changed, 3 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..754c052b7d72 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 +58,9 @@ 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];
+		if (!pasid)
+			pr_err("pasid is not queried correctly\n");
 
 		/* Patch the pasid field */
 		patched_ihre[3] = cpu_to_le32((le32_to_cpu(patched_ihre[3])
-- 
2.17.1