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drm/amdgpu: SW part of MES event log enablement

Browse source 
This is the generic SW part, prepare the event log buffer and dump it through debugfs

Signed-off-by: shaoyunl <shaoyun.liu@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
shaoyunl 2023-11-23 13:59:44 -05:00 committed by Alex Deucher
parent a2020be694
commit b2662d4cc4
4 changed files with 70 additions and 0 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
View file

@ -2147,6 +2147,8 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
amdgpu_debugfs_firmware_init(adev);
amdgpu_ta_if_debugfs_init(adev);
amdgpu_debugfs_mes_event_log_init(adev);
#if defined(CONFIG_DRM_AMD_DC)
if (adev->dc_enabled)
dtn_debugfs_init(adev);

2
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.h
View file

@ -32,3 +32,5 @@ void amdgpu_debugfs_fini(struct amdgpu_device *adev);
void amdgpu_debugfs_fence_init(struct amdgpu_device *adev);
void amdgpu_debugfs_firmware_init(struct amdgpu_device *adev);
void amdgpu_debugfs_gem_init(struct amdgpu_device *adev);
void amdgpu_debugfs_mes_event_log_init(struct amdgpu_device *adev);

61
drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
View file

@ -98,6 +98,26 @@ static int amdgpu_mes_doorbell_init(struct amdgpu_device *adev)
return 0;
}
static int amdgpu_mes_event_log_init(struct amdgpu_device *adev)
{
int r;
r = amdgpu_bo_create_kernel(adev, PAGE_SIZE, PAGE_SIZE,
AMDGPU_GEM_DOMAIN_GTT,
&adev->mes.event_log_gpu_obj,
&adev->mes.event_log_gpu_addr,
&adev->mes.event_log_cpu_addr);
if (r) {
dev_warn(adev->dev, "failed to create MES event log buffer (%d)", r);
return r;
}
memset(adev->mes.event_log_cpu_addr, 0, PAGE_SIZE);
return 0;
}
static void amdgpu_mes_doorbell_free(struct amdgpu_device *adev)
{
bitmap_free(adev->mes.doorbell_bitmap);
@ -182,8 +202,14 @@ int amdgpu_mes_init(struct amdgpu_device *adev)
if (r)
goto error;
r = amdgpu_mes_event_log_init(adev);
if (r)
goto error_doorbell;
return 0;
error_doorbell:
amdgpu_mes_doorbell_free(adev);
error:
amdgpu_device_wb_free(adev, adev->mes.sch_ctx_offs);
amdgpu_device_wb_free(adev, adev->mes.query_status_fence_offs);
@ -199,6 +225,10 @@ int amdgpu_mes_init(struct amdgpu_device *adev)
void amdgpu_mes_fini(struct amdgpu_device *adev)
{
amdgpu_bo_free_kernel(&adev->mes.event_log_gpu_obj,
&adev->mes.event_log_gpu_addr,
&adev->mes.event_log_cpu_addr);
amdgpu_device_wb_free(adev, adev->mes.sch_ctx_offs);
amdgpu_device_wb_free(adev, adev->mes.query_status_fence_offs);
amdgpu_device_wb_free(adev, adev->mes.read_val_offs);
@ -1479,3 +1509,34 @@ int amdgpu_mes_init_microcode(struct amdgpu_device *adev, int pipe)
amdgpu_ucode_release(&adev->mes.fw[pipe]);
return r;
}
#if defined(CONFIG_DEBUG_FS)
static int amdgpu_debugfs_mes_event_log_show(struct seq_file *m, void *unused)
{
struct amdgpu_device *adev = m->private;
uint32_t *mem = (uint32_t *)(adev->mes.event_log_cpu_addr);
seq_hex_dump(m, "", DUMP_PREFIX_OFFSET, 32, 4,
mem, PAGE_SIZE, false);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(amdgpu_debugfs_mes_event_log);
#endif
void amdgpu_debugfs_mes_event_log_init(struct amdgpu_device *adev)
{
#if defined(CONFIG_DEBUG_FS)
struct drm_minor *minor = adev_to_drm(adev)->primary;
struct dentry *root = minor->debugfs_root;
debugfs_create_file("amdgpu_mes_event_log", 0444, root,
adev, &amdgpu_debugfs_mes_event_log_fops);
#endif
}

5
drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
View file

@ -133,6 +133,11 @@ struct amdgpu_mes {
uint32_t num_mes_dbs;
unsigned long *doorbell_bitmap;
/* MES event log buffer */
struct amdgpu_bo *event_log_gpu_obj;
uint64_t event_log_gpu_addr;
void *event_log_cpu_addr;
/* ip specific functions */
const struct amdgpu_mes_funcs *funcs;
};