drm/amdgpu: Add plumbing for handling SQ EDC/ECC interrupts v2.

SQ can generate interrupts and installs the ISR to
handle the SQ interrupts.

Add parsing SQ data in interrupt handler.

v2:
Remove CZ only limitation.
Rebase.

Signed-off-by: David Panariti <David.Panariti@amd.com>
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index dbc47a7..807ee0d 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -2061,6 +2061,14 @@ static int gfx_v8_0_sw_init(void *handle)
        if (r)
                return r;
 
+       /* SQ interrupts. */
+       r = amdgpu_irq_add_id(adev, AMDGPU_IH_CLIENTID_LEGACY, 239,
+                             &adev->gfx.sq_irq);
+       if (r) {
+               DRM_ERROR("amdgpu_irq_add() for SQ failed: %d\n", r);
+               return r;
+       }
+
        adev->gfx.gfx_current_status = AMDGPU_GFX_NORMAL_MODE;
 
        gfx_v8_0_scratch_init(adev);
@@ -5126,6 +5134,8 @@ static int gfx_v8_0_hw_fini(void *handle)
 
        amdgpu_irq_put(adev, &adev->gfx.cp_ecc_error_irq, 0);
 
+       amdgpu_irq_put(adev, &adev->gfx.sq_irq, 0);
+
        /* disable KCQ to avoid CPC touch memory not valid anymore */
        for (i = 0; i < adev->gfx.num_compute_rings; i++)
                gfx_v8_0_kcq_disable(&adev->gfx.kiq.ring, &adev->gfx.compute_ring[i]);
@@ -5563,6 +5573,14 @@ static int gfx_v8_0_late_init(void *handle)
                return r;
        }
 
+       r = amdgpu_irq_get(adev, &adev->gfx.sq_irq, 0);
+       if (r) {
+               DRM_ERROR(
+                       "amdgpu_irq_get() failed to get IRQ for SQ, r: %d.\n",
+                       r);
+               return r;
+       }
+
        amdgpu_device_ip_set_powergating_state(adev,
                                               AMD_IP_BLOCK_TYPE_GFX,
                                               AMD_PG_STATE_GATE);
@@ -6853,6 +6871,32 @@ static int gfx_v8_0_set_cp_ecc_int_state(struct amdgpu_device *adev,
        return 0;
 }
 
+static int gfx_v8_0_set_sq_int_state(struct amdgpu_device *adev,
+                                    struct amdgpu_irq_src *source,
+                                    unsigned int type,
+                                    enum amdgpu_interrupt_state state)
+{
+       int enable_flag;
+
+       switch (state) {
+       case AMDGPU_IRQ_STATE_DISABLE:
+               enable_flag = 1;
+               break;
+
+       case AMDGPU_IRQ_STATE_ENABLE:
+               enable_flag = 0;
+               break;
+
+       default:
+               return -EINVAL;
+       }
+
+       WREG32_FIELD(SQ_INTERRUPT_MSG_CTRL, STALL,
+                    enable_flag);
+
+       return 0;
+}
+
 static int gfx_v8_0_eop_irq(struct amdgpu_device *adev,
                            struct amdgpu_irq_src *source,
                            struct amdgpu_iv_entry *entry)
@@ -6907,7 +6951,62 @@ static int gfx_v8_0_cp_ecc_error_irq(struct amdgpu_device *adev,
                                     struct amdgpu_irq_src *source,
                                     struct amdgpu_iv_entry *entry)
 {
-       DRM_ERROR("ECC error detected.");
+       DRM_ERROR("CP EDC/ECC error detected.");
+       return 0;
+}
+
+static int gfx_v8_0_sq_irq(struct amdgpu_device *adev,
+                          struct amdgpu_irq_src *source,
+                          struct amdgpu_iv_entry *entry)
+{
+       u8 enc, se_id;
+       char type[20];
+
+       /* Parse all fields according to SQ_INTERRUPT* registers */
+       enc = (entry->src_data[0] >> 26) & 0x3;
+       se_id = (entry->src_data[0] >> 24) & 0x3;
+
+       switch (enc) {
+               case 0:
+                       DRM_INFO("SQ general purpose intr detected:"
+                                       "se_id %d, immed_overflow %d, host_reg_overflow %d,"
+                                       "host_cmd_overflow %d, cmd_timestamp %d,"
+                                       "reg_timestamp %d, thread_trace_buff_full %d,"
+                                       "wlt %d, thread_trace %d.\n",
+                                       se_id,
+                                       (entry->src_data[0] >> 7) & 0x1,
+                                       (entry->src_data[0] >> 6) & 0x1,
+                                       (entry->src_data[0] >> 5) & 0x1,
+                                       (entry->src_data[0] >> 4) & 0x1,
+                                       (entry->src_data[0] >> 3) & 0x1,
+                                       (entry->src_data[0] >> 2) & 0x1,
+                                       (entry->src_data[0] >> 1) & 0x1,
+                                       entry->src_data[0] & 0x1
+                                       );
+                       break;
+               case 1:
+               case 2:
+
+                       if (enc == 1)
+                               sprintf(type, "instruction intr");
+                       else
+                               sprintf(type, "EDC/ECC error");
+
+                       DRM_INFO(
+                               "SQ %s detected: "
+                                       "se_id %d, cu_id %d, simd_id %d, wave_id %d, vm_id %d\n",
+                                       type, se_id,
+                                       (entry->src_data[0] >> 20) & 0xf,
+                                       (entry->src_data[0] >> 18) & 0x3,
+                                       (entry->src_data[0] >> 14) & 0xf,
+                                       (entry->src_data[0] >> 10) & 0xf
+                                       );
+                       break;
+               default:
+                       DRM_ERROR("SQ invalid encoding type\n.");
+                       return -EINVAL;
+       }
+
        return 0;
 }
 
@@ -7116,6 +7215,11 @@ static const struct amdgpu_irq_src_funcs gfx_v8_0_cp_ecc_error_irq_funcs = {
        .process = gfx_v8_0_cp_ecc_error_irq,
 };
 
+static const struct amdgpu_irq_src_funcs gfx_v8_0_sq_irq_funcs = {
+       .set = gfx_v8_0_set_sq_int_state,
+       .process = gfx_v8_0_sq_irq,
+};
+
 static void gfx_v8_0_set_irq_funcs(struct amdgpu_device *adev)
 {
        adev->gfx.eop_irq.num_types = AMDGPU_CP_IRQ_LAST;
@@ -7132,6 +7236,9 @@ static void gfx_v8_0_set_irq_funcs(struct amdgpu_device *adev)
 
        adev->gfx.cp_ecc_error_irq.num_types = 1;
        adev->gfx.cp_ecc_error_irq.funcs = &gfx_v8_0_cp_ecc_error_irq_funcs;
+
+       adev->gfx.sq_irq.num_types = 1;
+       adev->gfx.sq_irq.funcs = &gfx_v8_0_sq_irq_funcs;
 }
 
 static void gfx_v8_0_set_rlc_funcs(struct amdgpu_device *adev)