[PATCH 7/8] drm/amdkfd: Add detect+reset hangs to GC 12.1

[Amber Lin]

Add detect_and_reset_hung_queues to user mode compute queues on GC 12.1.

Signed-off-by: Amber Lin <amber....@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/mes_v12_1.c | 35 +++++++++++++++++++++++++-
 1 file changed, 34 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v12_1.c 
b/drivers/gpu/drm/amd/amdgpu/mes_v12_1.c
index 7aea3a50e712..ac9e26b8bb52 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_v12_1.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v12_1.c
@@ -46,6 +46,8 @@ static int mes_v12_1_kiq_hw_fini(struct amdgpu_device *adev, 
uint32_t xcc_id);
 static int mes_v12_1_self_test(struct amdgpu_device *adev, int xcc_id);
 
 #define MES_EOP_SIZE   2048
+#define MES12_HUNG_DB_OFFSET_ARRAY_SIZE 8 /* [0:3] = db offset [4:7] hqd info 
*/
+#define MES12_HUNG_HQD_INFO_OFFSET      4
 
 #define regCP_HQD_IB_CONTROL_MES_12_1_DEFAULT 0x100000
 #define XCC_MID_MASK 0x41000000
@@ -229,7 +231,7 @@ static int mes_v12_1_submit_pkt_and_poll_completion(struct 
amdgpu_mes *mes,
                        xcc_id, pipe, x_pkt->header.opcode);
 
        r = amdgpu_fence_wait_polling(ring, seq, timeout);
-       if (r < 1 || !*status_ptr) {
+       if (r < 1 || !lower_32_bits(*status_ptr)) {
                if (misc_op_str)
                        dev_err(adev->dev,
                                "MES(%d, %d) failed to respond to msg=%s 
(%s)\n",
@@ -858,6 +860,33 @@ static int mes_v12_1_reset_legacy_queue(struct amdgpu_mes 
*mes,
 }
 #endif
 
+static int mes_v12_1_detect_and_reset_hung_queues(struct amdgpu_mes *mes,
+                                                 struct 
mes_detect_and_reset_queue_input *input)
+{
+       union MESAPI__RESET mes_reset_queue_pkt;
+
+       memset(&mes_reset_queue_pkt, 0, sizeof(mes_reset_queue_pkt));
+
+       mes_reset_queue_pkt.header.type = MES_API_TYPE_SCHEDULER;
+       mes_reset_queue_pkt.header.opcode = MES_SCH_API_RESET;
+       mes_reset_queue_pkt.header.dwsize = API_FRAME_SIZE_IN_DWORDS;
+
+       mes_reset_queue_pkt.queue_type =
+               convert_to_mes_queue_type(input->queue_type);
+       mes_reset_queue_pkt.doorbell_offset_addr =
+               mes->hung_queue_db_array_gpu_addr[0];
+
+       if (input->detect_only)
+               mes_reset_queue_pkt.hang_detect_only = 1;
+       else
+               mes_reset_queue_pkt.hang_detect_then_reset = 1;
+
+       return mes_v12_1_submit_pkt_and_poll_completion(mes,
+                       input->xcc_id, AMDGPU_MES_SCHED_PIPE,
+                       &mes_reset_queue_pkt, sizeof(mes_reset_queue_pkt),
+                       offsetof(union MESAPI__RESET, api_status));
+}
+
 static int mes_v12_inv_tlb_convert_hub_id(uint8_t id)
 {
        /*
@@ -915,6 +944,7 @@ static const struct amdgpu_mes_funcs mes_v12_1_funcs = {
        .resume_gang = mes_v12_1_resume_gang,
        .misc_op = mes_v12_1_misc_op,
        .reset_hw_queue = mes_v12_1_reset_hw_queue,
+       .detect_and_reset_hung_queues = mes_v12_1_detect_and_reset_hung_queues,
        .invalidate_tlbs_pasid = mes_v12_1_inv_tlbs_pasid,
 };
 
@@ -1931,6 +1961,9 @@ static int mes_v12_1_early_init(struct amdgpu_ip_block 
*ip_block)
        struct amdgpu_device *adev = ip_block->adev;
        int pipe, r;
 
+       adev->mes.hung_queue_db_array_size = MES12_HUNG_DB_OFFSET_ARRAY_SIZE;
+       adev->mes.hung_queue_hqd_info_offset = MES12_HUNG_HQD_INFO_OFFSET;
+
        for (pipe = 0; pipe < AMDGPU_MAX_MES_PIPES; pipe++) {
                r = amdgpu_mes_init_microcode(adev, pipe);
                if (r)
-- 
2.43.0