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drm/amdgpu/vcn: Add regdump helper functions

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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>
This commit is contained in:
Sathishkumar S 2025-07-17 11:30:52 +05:30 committed by Alex Deucher
parent e6c2b0f232
commit de55cbff5c
2 changed files with 95 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

87
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
View file

@ -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);
}
}
}

8
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
View file

@ -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