diff options
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 62 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/include/amdgpu_reg_state.h | 13 |
2 files changed, 75 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 5d3a83193115..f29d0faf956e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -162,6 +162,65 @@ static ssize_t amdgpu_device_get_pcie_replay_count(struct device *dev, static DEVICE_ATTR(pcie_replay_count, 0444, amdgpu_device_get_pcie_replay_count, NULL); +static ssize_t amdgpu_sysfs_reg_state_get(struct file *f, struct kobject *kobj, + struct bin_attribute *attr, char *buf, + loff_t ppos, size_t count) +{ + struct device *dev = kobj_to_dev(kobj); + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(ddev); + ssize_t bytes_read; + + switch (ppos) { + case AMDGPU_SYS_REG_STATE_XGMI: + bytes_read = amdgpu_asic_get_reg_state( + adev, AMDGPU_REG_STATE_TYPE_XGMI, buf, count); + break; + case AMDGPU_SYS_REG_STATE_WAFL: + bytes_read = amdgpu_asic_get_reg_state( + adev, AMDGPU_REG_STATE_TYPE_WAFL, buf, count); + break; + case AMDGPU_SYS_REG_STATE_PCIE: + bytes_read = amdgpu_asic_get_reg_state( + adev, AMDGPU_REG_STATE_TYPE_PCIE, buf, count); + break; + case AMDGPU_SYS_REG_STATE_USR: + bytes_read = amdgpu_asic_get_reg_state( + adev, AMDGPU_REG_STATE_TYPE_USR, buf, count); + break; + case AMDGPU_SYS_REG_STATE_USR_1: + bytes_read = amdgpu_asic_get_reg_state( + adev, AMDGPU_REG_STATE_TYPE_USR_1, buf, count); + break; + default: + return -EINVAL; + } + + return bytes_read; +} + +BIN_ATTR(reg_state, 0444, amdgpu_sysfs_reg_state_get, NULL, + AMDGPU_SYS_REG_STATE_END); + +int amdgpu_reg_state_sysfs_init(struct amdgpu_device *adev) +{ + int ret; + + if (!amdgpu_asic_get_reg_state_supported(adev)) + return 0; + + ret = sysfs_create_bin_file(&adev->dev->kobj, &bin_attr_reg_state); + + return ret; +} + +void amdgpu_reg_state_sysfs_fini(struct amdgpu_device *adev) +{ + if (!amdgpu_asic_get_reg_state_supported(adev)) + return; + sysfs_remove_bin_file(&adev->dev->kobj, &bin_attr_reg_state); +} + /** * DOC: board_info * @@ -4233,6 +4292,7 @@ fence_driver_init: "Could not create amdgpu board attributes\n"); amdgpu_fru_sysfs_init(adev); + amdgpu_reg_state_sysfs_init(adev); if (IS_ENABLED(CONFIG_PERF_EVENTS)) r = amdgpu_pmu_init(adev); @@ -4355,6 +4415,8 @@ void amdgpu_device_fini_hw(struct amdgpu_device *adev) sysfs_remove_files(&adev->dev->kobj, amdgpu_dev_attributes); amdgpu_fru_sysfs_fini(adev); + amdgpu_reg_state_sysfs_fini(adev); + /* disable ras feature must before hw fini */ amdgpu_ras_pre_fini(adev); diff --git a/drivers/gpu/drm/amd/include/amdgpu_reg_state.h b/drivers/gpu/drm/amd/include/amdgpu_reg_state.h index 3dbdb118db59..be519c8edf49 100644 --- a/drivers/gpu/drm/amd/include/amdgpu_reg_state.h +++ b/drivers/gpu/drm/amd/include/amdgpu_reg_state.h @@ -34,6 +34,15 @@ enum amdgpu_reg_state { AMDGPU_REG_STATE_TYPE_USR_1 = 5 }; +enum amdgpu_sysfs_reg_offset { + AMDGPU_SYS_REG_STATE_XGMI = 0x0000, + AMDGPU_SYS_REG_STATE_WAFL = 0x1000, + AMDGPU_SYS_REG_STATE_PCIE = 0x2000, + AMDGPU_SYS_REG_STATE_USR = 0x3000, + AMDGPU_SYS_REG_STATE_USR_1 = 0x4000, + AMDGPU_SYS_REG_STATE_END = 0x5000, +}; + struct amdgpu_reg_state_header { uint16_t structure_size; uint8_t format_revision; @@ -137,4 +146,8 @@ static inline size_t amdgpu_reginst_size(uint16_t num_inst, size_t inst_size, (size)) : \ 0) + +int amdgpu_reg_state_sysfs_init(struct amdgpu_device *adev); +void amdgpu_reg_state_sysfs_fini(struct amdgpu_device *adev); + #endif |