drm/amdgpu/vcn: Add regdump helper functions

Add generic helper functions for vcn devcoredump support
which can be re-used for all vcn versions.

Signed-off-by: Sathishkumar S <sathishkumar.sundararaju@amd.com>
Acked-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
index f1f67521c29cab315b2c09bfbcf37d5dda20a88a..b497a67141384a88793a3f2e36510194a542e26e 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
@@ -92,6 +92,7 @@ MODULE_FIRMWARE(FIRMWARE_VCN5_0_0);
 MODULE_FIRMWARE(FIRMWARE_VCN5_0_1);
 
 static void amdgpu_vcn_idle_work_handler(struct work_struct *work);
+static void amdgpu_vcn_reg_dump_fini(struct amdgpu_device *adev);
 
 int amdgpu_vcn_early_init(struct amdgpu_device *adev, int i)
 {
@@ -285,6 +286,10 @@ int amdgpu_vcn_sw_fini(struct amdgpu_device *adev, int i)
                amdgpu_ucode_release(&adev->vcn.inst[0].fw);
                adev->vcn.inst[i].fw = NULL;
        }
+
+       if (adev->vcn.reg_list)
+               amdgpu_vcn_reg_dump_fini(adev);
+
        mutex_destroy(&adev->vcn.inst[i].vcn_pg_lock);
        mutex_destroy(&adev->vcn.inst[i].vcn1_jpeg1_workaround);
 
@@ -1527,3 +1532,85 @@ int amdgpu_vcn_ring_reset(struct amdgpu_ring *ring,
 
        return amdgpu_vcn_reset_engine(adev, ring->me);
 }
+
+int amdgpu_vcn_reg_dump_init(struct amdgpu_device *adev,
+                            const struct amdgpu_hwip_reg_entry *reg, u32 count)
+{
+       adev->vcn.ip_dump = kcalloc(adev->vcn.num_vcn_inst * count,
+                                    sizeof(uint32_t), GFP_KERNEL);
+       if (!adev->vcn.ip_dump)
+               return -ENOMEM;
+       adev->vcn.reg_list = reg;
+       adev->vcn.reg_count = count;
+
+       return 0;
+}
+
+static void amdgpu_vcn_reg_dump_fini(struct amdgpu_device *adev)
+{
+       kfree(adev->vcn.ip_dump);
+       adev->vcn.reg_list = NULL;
+       adev->vcn.reg_count = 0;
+}
+
+void amdgpu_vcn_dump_ip_state(struct amdgpu_ip_block *ip_block)
+{
+       struct amdgpu_device *adev = ip_block->adev;
+       int i, j;
+       bool is_powered;
+       u32 inst_off;
+
+       if (!adev->vcn.ip_dump)
+               return;
+
+       for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
+               if (adev->vcn.harvest_config & (1 << i))
+                       continue;
+
+               inst_off = i * adev->vcn.reg_count;
+               /* mmUVD_POWER_STATUS is always readable and is the first in reg_list */
+               adev->vcn.ip_dump[inst_off] =
+                       RREG32(SOC15_REG_ENTRY_OFFSET_INST(adev->vcn.reg_list[0], i));
+               is_powered = (adev->vcn.ip_dump[inst_off] &
+                             UVD_POWER_STATUS__UVD_POWER_STATUS_TILES_OFF) !=
+                             UVD_POWER_STATUS__UVD_POWER_STATUS_TILES_OFF;
+
+               if (is_powered)
+                       for (j = 1; j < adev->vcn.reg_count; j++)
+                               adev->vcn.ip_dump[inst_off + j] =
+                               RREG32(SOC15_REG_ENTRY_OFFSET_INST(adev->vcn.reg_list[j], i));
+       }
+}
+
+void amdgpu_vcn_print_ip_state(struct amdgpu_ip_block *ip_block, struct drm_printer *p)
+{
+       struct amdgpu_device *adev = ip_block->adev;
+       int i, j;
+       bool is_powered;
+       u32 inst_off;
+
+       if (!adev->vcn.ip_dump)
+               return;
+
+       drm_printf(p, "num_instances:%d\n", adev->vcn.num_vcn_inst);
+       for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
+               if (adev->vcn.harvest_config & (1 << i)) {
+                       drm_printf(p, "\nHarvested Instance:VCN%d Skipping dump\n", i);
+                       continue;
+               }
+
+               inst_off = i * adev->vcn.reg_count;
+               is_powered = (adev->vcn.ip_dump[inst_off] &
+                             UVD_POWER_STATUS__UVD_POWER_STATUS_TILES_OFF) !=
+                             UVD_POWER_STATUS__UVD_POWER_STATUS_TILES_OFF;
+
+               if (is_powered) {
+                       drm_printf(p, "\nActive Instance:VCN%d\n", i);
+                       for (j = 0; j < adev->vcn.reg_count; j++)
+                               drm_printf(p, "%-50s \t 0x%08x\n", adev->vcn.reg_list[j].reg_name,
+                                          adev->vcn.ip_dump[inst_off + j]);
+               } else {
+                       drm_printf(p, "\nInactive Instance:VCN%d\n", i);
+               }
+       }
+}

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
index 0bc0a94d7cf0fb0a3a3b2584e07b2c1f4326bbd1..b3fb1d0e43fc957ecd2e9ca1c86ca05d80b46240 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
@@ -237,6 +237,8 @@
 
 #define AMDGPU_DRM_KEY_INJECT_WORKAROUND_VCNFW_ASD_HANDSHAKING 2
 
+struct amdgpu_hwip_reg_entry;
+
 enum amdgpu_vcn_caps {
        AMDGPU_VCN_RRMT_ENABLED,
 };
@@ -362,6 +364,8 @@ struct amdgpu_vcn {
 
        bool                    workload_profile_active;
        struct mutex            workload_profile_mutex;
+       u32 reg_count;
+       const struct amdgpu_hwip_reg_entry *reg_list;
 };
 
 struct amdgpu_fw_shared_rb_ptrs_struct {
@@ -557,4 +561,8 @@ int vcn_set_powergating_state(struct amdgpu_ip_block *ip_block,
 int amdgpu_vcn_ring_reset(struct amdgpu_ring *ring,
                          unsigned int vmid,
                          struct amdgpu_fence *guilty_fence);
+int amdgpu_vcn_reg_dump_init(struct amdgpu_device *adev,
+                            const struct amdgpu_hwip_reg_entry *reg, u32 count);
+void amdgpu_vcn_dump_ip_state(struct amdgpu_ip_block *ip_block);
+void amdgpu_vcn_print_ip_state(struct amdgpu_ip_block *ip_block, struct drm_printer *p);
 #endif