[PATCH 1/2] drm/amd/pm: Add STB dump function.

[Andrey Grodzovsky]

It will be used during GPU reset.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky at amd.com>
---
 drivers/gpu/drm/amd/pm/amdgpu_dpm.c           | 10 +++++++
 drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h       |  3 +++
 drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c     | 26 +++++++++++++++++++
 drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h |  2 ++
 4 files changed, 41 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
index 1d63f1e8884c..815a6367d834 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
@@ -1327,6 +1327,16 @@ void amdgpu_dpm_stb_debug_fs_init(struct amdgpu_device *adev)
 	amdgpu_smu_stb_debug_fs_init(adev);
 }
 
+void amdgpu_dpm_stb_dump(struct amdgpu_device *adev)
+{
+	struct smu_context *smu = adev->powerplay.pp_handle;
+
+	if (!is_support_sw_smu(adev))
+		return;
+
+	smu_stb_dump(smu);
+}
+
 int amdgpu_dpm_display_configuration_change(struct amdgpu_device *adev,
 					    const struct amd_pp_display_configuration *input)
 {
diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h
index ddfa55b59d02..99351d463a72 100644
--- a/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h
+++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h
@@ -503,6 +503,7 @@ int amdgpu_dpm_set_pp_table(struct amdgpu_device *adev,
 			    size_t size);
 int amdgpu_dpm_get_num_cpu_cores(struct amdgpu_device *adev);
 void amdgpu_dpm_stb_debug_fs_init(struct amdgpu_device *adev);
+void amdgpu_dpm_stb_dump(struct amdgpu_device *adev);
 int amdgpu_dpm_display_configuration_change(struct amdgpu_device *adev,
 					    const struct amd_pp_display_configuration *input);
 int amdgpu_dpm_get_clock_by_type(struct amdgpu_device *adev,
@@ -540,4 +541,6 @@ enum pp_smu_status amdgpu_dpm_get_uclk_dpm_states(struct amdgpu_device *adev,
 						  unsigned int *num_states);
 int amdgpu_dpm_get_dpm_clock_table(struct amdgpu_device *adev,
 				   struct dpm_clocks *clock_table);
+
+
 #endif
diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index 7e79a67bb8ef..aff0ed9b6f9a 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -2958,6 +2958,32 @@ int smu_stb_collect_info(struct smu_context *smu, void *buf, uint32_t size)
 	return smu->ppt_funcs->stb_collect_info(smu, buf, size);
 }
 
+void smu_stb_dump(struct smu_context *smu)
+{
+	unsigned char *buf;
+
+	/* STB is disabled */
+	if (!drm_debug_enabled(DRM_UT_DRIVER) || !smu->stb_context.enabled)
+		return;
+
+	buf = kvmalloc_array(smu->stb_context.stb_buf_size, sizeof(*buf), GFP_KERNEL);
+	if (!buf)
+		return;
+
+	if (smu_stb_collect_info(smu, buf, smu->stb_context.stb_buf_size))
+		goto out;
+
+	DRM_DEV_DEBUG_DRIVER(smu->adev->dev, "START PRINT STB DUMP");
+	print_hex_dump(KERN_INFO, "data: ", DUMP_PREFIX_NONE,
+		       4, 4, buf, smu->stb_context.stb_buf_size, false);
+	DRM_DEV_DEBUG_DRIVER(smu->adev->dev, "END PRINT STB DUMP");
+
+	return;
+
+out:
+	kvfree(buf);
+}
+
 #if defined(CONFIG_DEBUG_FS)
 
 static int smu_stb_debugfs_open(struct inode *inode, struct file *filp)
diff --git a/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
index fbef3ab8d487..991586f61a85 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
@@ -1426,6 +1426,8 @@ int smu_wait_for_event(struct smu_context *smu, enum smu_event_type event,
 		       uint64_t event_arg);
 int smu_get_ecc_info(struct smu_context *smu, void *umc_ecc);
 int smu_stb_collect_info(struct smu_context *smu, void *buff, uint32_t size);
+void smu_stb_dump(struct smu_context *smu);
+
 void amdgpu_smu_stb_debug_fs_init(struct amdgpu_device *adev);
 int smu_send_hbm_bad_pages_num(struct smu_context *smu, uint32_t size);
 #endif
-- 
2.25.1