drm/amdkfd: add sdma poison consumption handling

Follow the same apporach as GFX to handle SDMA
poison consumption. Send SIGBUS to application
when receives SDMA_ECC interrupt and issue gpu
reset either mode 2 or mode 1 to get the engine
back
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Dennis Li<dennis.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c

@@ -249,8 +249,13 @@ static void event_interrupt_wq_v9(struct kfd_dev *dev,
 		   client_id == SOC15_IH_CLIENTID_SDMA5 ||
 		   client_id == SOC15_IH_CLIENTID_SDMA6 ||
 		   client_id == SOC15_IH_CLIENTID_SDMA7) {
-		if (source_id == SOC15_INTSRC_SDMA_TRAP)
+		if (source_id == SOC15_INTSRC_SDMA_TRAP) {
 			kfd_signal_event_interrupt(pasid, context_id0 & 0xfffffff, 28);
+		} else if (source_id == SOC15_INTSRC_SDMA_ECC) {
+			kfd_signal_poison_consumed_event(dev, pasid);
+			amdgpu_amdkfd_gpu_reset(dev->kgd);
+			return;
+		}
 	} else if (client_id == SOC15_IH_CLIENTID_VMC ||
 		   client_id == SOC15_IH_CLIENTID_VMC1 ||
 		   client_id == SOC15_IH_CLIENTID_UTCL2) {

drivers/gpu/drm/amd/amdkfd/soc15_int.h

@@ -30,6 +30,7 @@
 #define SOC15_INTSRC_SQ_INTERRUPT_MSG	239
 #define SOC15_INTSRC_VMC_FAULT		0
 #define SOC15_INTSRC_SDMA_TRAP		224
+#define SOC15_INTSRC_SDMA_ECC		220
 
 
 #define SOC15_CLIENT_ID_FROM_IH_ENTRY(entry) (le32_to_cpu(entry[0]) & 0xff)