On 3/19/2024 7:27 PM, Khatri, Sunil wrote:
>
> On 3/19/2024 7:19 PM, Lazar, Lijo wrote:
>>
>> On 3/19/2024 6:02 PM, Sunil Khatri wrote:
>>> Refactor the code so debugfs and devcoredump can reuse
>>> the common information and avoid unnecessary copy of it.
>>>
>>> created a new file which would be the right place to
>>> hold functions which will be used between sysfs, debugfs
>>> and devcoredump.
>>>
>>> Cc: Christian König <[email protected]>
>>> Cc: Alex Deucher <[email protected]>
>>> Signed-off-by: Sunil Khatri <[email protected]>
>>> ---
>>> drivers/gpu/drm/amd/amdgpu/Makefile | 2 +-
>>> drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 +
>>> drivers/gpu/drm/amd/amdgpu/amdgpu_devinfo.c | 151 ++++++++++++++++++++
>>> drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 118 +--------------
>>> 4 files changed, 157 insertions(+), 115 deletions(-)
>>> create mode 100644 drivers/gpu/drm/amd/amdgpu/amdgpu_devinfo.c
>>>
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile
>>> b/drivers/gpu/drm/amd/amdgpu/Makefile
>>> index 4536c8ad0e11..05d34f4b18f5 100644
>>> --- a/drivers/gpu/drm/amd/amdgpu/Makefile
>>> +++ b/drivers/gpu/drm/amd/amdgpu/Makefile
>>> @@ -80,7 +80,7 @@ amdgpu-y += amdgpu_device.o amdgpu_doorbell_mgr.o
>>> amdgpu_kms.o \
>>> amdgpu_umc.o smu_v11_0_i2c.o amdgpu_fru_eeprom.o amdgpu_rap.o \
>>> amdgpu_fw_attestation.o amdgpu_securedisplay.o \
>>> amdgpu_eeprom.o amdgpu_mca.o amdgpu_psp_ta.o amdgpu_lsdma.o \
>>> - amdgpu_ring_mux.o amdgpu_xcp.o amdgpu_seq64.o amdgpu_aca.o
>>> + amdgpu_ring_mux.o amdgpu_xcp.o amdgpu_seq64.o amdgpu_aca.o
>>> amdgpu_devinfo.o
>>> amdgpu-$(CONFIG_PROC_FS) += amdgpu_fdinfo.o
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
>>> b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
>>> index 9c62552bec34..0267870aa9b1 100644
>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
>>> @@ -1609,4 +1609,5 @@ extern const struct attribute_group
>>> amdgpu_vram_mgr_attr_group;
>>> extern const struct attribute_group amdgpu_gtt_mgr_attr_group;
>>> extern const struct attribute_group amdgpu_flash_attr_group;
>>> +int amdgpu_device_info(struct amdgpu_device *adev, struct
>>> drm_amdgpu_info_device *dev_info);
>>> #endif
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_devinfo.c
>>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_devinfo.c
>>> new file mode 100644
>>> index 000000000000..d2c15a1dcb0d
>>> --- /dev/null
>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_devinfo.c
>>> @@ -0,0 +1,151 @@
>>> +// SPDX-License-Identifier: MIT
>>> +/*
>>> + * Copyright 2024 Advanced Micro Devices, Inc.
>>> + *
>>> + * Permission is hereby granted, free of charge, to any person
>>> obtaining a
>>> + * copy of this software and associated documentation files (the
>>> "Software"),
>>> + * to deal in the Software without restriction, including without
>>> limitation
>>> + * the rights to use, copy, modify, merge, publish, distribute,
>>> sublicense,
>>> + * and/or sell copies of the Software, and to permit persons to whom
>>> the
>>> + * Software is furnished to do so, subject to the following conditions:
>>> + *
>>> + * The above copyright notice and this permission notice shall be
>>> included in
>>> + * all copies or substantial portions of the Software.
>>> + *
>>> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
>>> EXPRESS OR
>>> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
>>> MERCHANTABILITY,
>>> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
>>> EVENT SHALL
>>> + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM,
>>> DAMAGES OR
>>> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
>>> OTHERWISE,
>>> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
>>> USE OR
>>> + * OTHER DEALINGS IN THE SOFTWARE.
>>> + *
>>> + */
>>> +
>>> +#include "amdgpu.h"
>>> +#include "amd_pcie.h"
>>> +
>>> +#include <drm/amdgpu_drm.h>
>>> +
>>> +int amdgpu_device_info(struct amdgpu_device *adev, struct
>>> drm_amdgpu_info_device *dev_info)
>>> +{
>>> + int ret;
>>> + uint64_t vm_size;
>>> + uint32_t pcie_gen_mask;
>>> +
>>> + if (dev_info == NULL)
>>> + return -EINVAL;
>>> +
>>> + dev_info->device_id = adev->pdev->device;
>>> + dev_info->chip_rev = adev->rev_id;
>>> + dev_info->external_rev = adev->external_rev_id;
>>> + dev_info->pci_rev = adev->pdev->revision;
>>> + dev_info->family = adev->family;
>>> + dev_info->num_shader_engines = adev->gfx.config.max_shader_engines;
>>> + dev_info->num_shader_arrays_per_engine =
>>> adev->gfx.config.max_sh_per_se;
>>> + /* return all clocks in KHz */
>>> + dev_info->gpu_counter_freq = amdgpu_asic_get_xclk(adev) * 10;
>>> + if (adev->pm.dpm_enabled) {
>>> + dev_info->max_engine_clock = amdgpu_dpm_get_sclk(adev,
>>> false) * 10;
>>> + dev_info->max_memory_clock = amdgpu_dpm_get_mclk(adev,
>>> false) * 10;
>>> + dev_info->min_engine_clock = amdgpu_dpm_get_sclk(adev, true)
>>> * 10;
>>> + dev_info->min_memory_clock = amdgpu_dpm_get_mclk(adev, true)
>>> * 10;
>>> + } else {
>>> + dev_info->max_engine_clock =
>>> + dev_info->min_engine_clock =
>>> + adev->clock.default_sclk * 10;
>>> + dev_info->max_memory_clock =
>>> + dev_info->min_memory_clock =
>>> + adev->clock.default_mclk * 10;
>>> + }
>>> + dev_info->enabled_rb_pipes_mask =
>>> adev->gfx.config.backend_enable_mask;
>>> + dev_info->num_rb_pipes = adev->gfx.config.max_backends_per_se *
>>> + adev->gfx.config.max_shader_engines;
>>> + dev_info->num_hw_gfx_contexts = adev->gfx.config.max_hw_contexts;
>>> + dev_info->ids_flags = 0;
>>> + if (adev->flags & AMD_IS_APU)
>>> + dev_info->ids_flags |= AMDGPU_IDS_FLAGS_FUSION;
>>> + if (adev->gfx.mcbp)
>>> + dev_info->ids_flags |= AMDGPU_IDS_FLAGS_PREEMPTION;
>>> + if (amdgpu_is_tmz(adev))
>>> + dev_info->ids_flags |= AMDGPU_IDS_FLAGS_TMZ;
>>> + if (adev->gfx.config.ta_cntl2_truncate_coord_mode)
>>> + dev_info->ids_flags |= AMDGPU_IDS_FLAGS_CONFORMANT_TRUNC_COORD;
>>> +
>>> + vm_size = adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE;
>>> + vm_size -= AMDGPU_VA_RESERVED_TOP;
>>> +
>>> + /* Older VCE FW versions are buggy and can handle only 40bits */
>>> + if (adev->vce.fw_version && adev->vce.fw_version <
>>> AMDGPU_VCE_FW_53_45)
>>> + vm_size = min(vm_size, 1ULL << 40);
>>> +
>>> + dev_info->virtual_address_offset = AMDGPU_VA_RESERVED_BOTTOM;
>>> + dev_info->virtual_address_max = min(vm_size,
>>> AMDGPU_GMC_HOLE_START);
>>> +
>>> + if (vm_size > AMDGPU_GMC_HOLE_START) {
>>> + dev_info->high_va_offset = AMDGPU_GMC_HOLE_END;
>>> + dev_info->high_va_max = AMDGPU_GMC_HOLE_END | vm_size;
>>> + }
>>> + dev_info->virtual_address_alignment = max_t(u32, PAGE_SIZE,
>>> AMDGPU_GPU_PAGE_SIZE);
>>> + dev_info->pte_fragment_size = (1 <<
>>> adev->vm_manager.fragment_size) * AMDGPU_GPU_PAGE_SIZE;
>>> + dev_info->gart_page_size = max_t(u32, PAGE_SIZE,
>>> AMDGPU_GPU_PAGE_SIZE);
>>> + dev_info->cu_active_number = adev->gfx.cu_info.number;
>>> + dev_info->cu_ao_mask = adev->gfx.cu_info.ao_cu_mask;
>>> + dev_info->ce_ram_size = adev->gfx.ce_ram_size;
>>> + memcpy(&dev_info->cu_ao_bitmap[0],
>>> &adev->gfx.cu_info.ao_cu_bitmap[0],
>>> + sizeof(adev->gfx.cu_info.ao_cu_bitmap));
>>> + memcpy(&dev_info->cu_bitmap[0], &adev->gfx.cu_info.bitmap[0],
>>> + sizeof(dev_info->cu_bitmap));
>>> + dev_info->vram_type = adev->gmc.vram_type;
>>> + dev_info->vram_bit_width = adev->gmc.vram_width;
>>> + dev_info->vce_harvest_config = adev->vce.harvest_config;
>>> + dev_info->gc_double_offchip_lds_buf =
>>> + adev->gfx.config.double_offchip_lds_buf;
>>> + dev_info->wave_front_size = adev->gfx.cu_info.wave_front_size;
>>> + dev_info->num_shader_visible_vgprs = adev->gfx.config.max_gprs;
>>> + dev_info->num_cu_per_sh = adev->gfx.config.max_cu_per_sh;
>>> + dev_info->num_tcc_blocks =
>>> adev->gfx.config.max_texture_channel_caches;
>>> + dev_info->gs_vgt_table_depth = adev->gfx.config.gs_vgt_table_depth;
>>> + dev_info->gs_prim_buffer_depth =
>>> adev->gfx.config.gs_prim_buffer_depth;
>>> + dev_info->max_gs_waves_per_vgt = adev->gfx.config.max_gs_threads;
>>> +
>>> + if (adev->family >= AMDGPU_FAMILY_NV)
>>> + dev_info->pa_sc_tile_steering_override =
>>> + adev->gfx.config.pa_sc_tile_steering_override;
>>> +
>>> + dev_info->tcc_disabled_mask = adev->gfx.config.tcc_disabled_mask;
>>> +
>>> + /* Combine the chip gen mask with the platform (CPU/mobo) mask. */
>>> + pcie_gen_mask = adev->pm.pcie_gen_mask & (adev->pm.pcie_gen_mask
>>> >> 16);
>>> + dev_info->pcie_gen = fls(pcie_gen_mask);
>>> + dev_info->pcie_num_lanes =
>>> + adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X32 ?
>>> 32 :
>>> + adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 ?
>>> 16 :
>>> + adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 ?
>>> 12 :
>>> + adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 ? 8 :
>>> + adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 ? 4 :
>>> + adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 ? 2
>>> : 1;
>>> +
>>> + dev_info->tcp_cache_size = adev->gfx.config.gc_tcp_l1_size;
>>> + dev_info->num_sqc_per_wgp = adev->gfx.config.gc_num_sqc_per_wgp;
>>> + dev_info->sqc_data_cache_size =
>>> adev->gfx.config.gc_l1_data_cache_size_per_sqc;
>>> + dev_info->sqc_inst_cache_size =
>>> adev->gfx.config.gc_l1_instruction_cache_size_per_sqc;
>>> + dev_info->gl1c_cache_size =
>>> adev->gfx.config.gc_gl1c_size_per_instance *
>>> + adev->gfx.config.gc_gl1c_per_sa;
>>> + dev_info->gl2c_cache_size = adev->gfx.config.gc_gl2c_per_gpu;
>>> + dev_info->mall_size = adev->gmc.mall_size;
>>> +
>>> +
>>> + if (adev->gfx.funcs->get_gfx_shadow_info) {
>>> + struct amdgpu_gfx_shadow_info shadow_info;
>>> +
>>> + ret = amdgpu_gfx_get_gfx_shadow_info(adev, &shadow_info);
>> This failure is ignored in the present logic and rest of the information
>> is filled. Probably, need to continue the same way.
>
> Since this is the information that we are sharing with user and on any
> failure we just decide not to populate those fields. By default all the
> members are initialized to zero and they
>
> are updated when we have valid values. To me seems the right logic
> instead of failing the complete call, we provide the information what we
> have.
>
Actually, this is not what is really done. If you fail here, then this
happens down the call. It doesn't copy, instead frees without copying to
userspace.
+ ret = amdgpu_device_info(adev, dev_info);
+ if (!ret) {
Thanks,
Lijo
> Regards
> Sunil
>
>>
>> Thanks,
>> Lijo
>>
>>> + if (!ret) {
>>> + dev_info->shadow_size = shadow_info.shadow_size;
>>> + dev_info->shadow_alignment = shadow_info.shadow_alignment;
>>> + dev_info->csa_size = shadow_info.csa_size;
>>> + dev_info->csa_alignment = shadow_info.csa_alignment;
>>> + }
>>> + }
>>> + return ret;
>>> +}
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
>>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
>>> index a66d47865e3b..24f775c68a51 100644
>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
>>> @@ -850,125 +850,15 @@ int amdgpu_info_ioctl(struct drm_device *dev,
>>> void *data, struct drm_file *filp)
>>> }
>>> case AMDGPU_INFO_DEV_INFO: {
>>> struct drm_amdgpu_info_device *dev_info;
>>> - uint64_t vm_size;
>>> - uint32_t pcie_gen_mask;
>>> dev_info = kzalloc(sizeof(*dev_info), GFP_KERNEL);
>>> if (!dev_info)
>>> return -ENOMEM;
>>> - dev_info->device_id = adev->pdev->device;
>>> - dev_info->chip_rev = adev->rev_id;
>>> - dev_info->external_rev = adev->external_rev_id;
>>> - dev_info->pci_rev = adev->pdev->revision;
>>> - dev_info->family = adev->family;
>>> - dev_info->num_shader_engines =
>>> adev->gfx.config.max_shader_engines;
>>> - dev_info->num_shader_arrays_per_engine =
>>> adev->gfx.config.max_sh_per_se;
>>> - /* return all clocks in KHz */
>>> - dev_info->gpu_counter_freq = amdgpu_asic_get_xclk(adev) * 10;
>>> - if (adev->pm.dpm_enabled) {
>>> - dev_info->max_engine_clock = amdgpu_dpm_get_sclk(adev,
>>> false) * 10;
>>> - dev_info->max_memory_clock = amdgpu_dpm_get_mclk(adev,
>>> false) * 10;
>>> - dev_info->min_engine_clock = amdgpu_dpm_get_sclk(adev,
>>> true) * 10;
>>> - dev_info->min_memory_clock = amdgpu_dpm_get_mclk(adev,
>>> true) * 10;
>>> - } else {
>>> - dev_info->max_engine_clock =
>>> - dev_info->min_engine_clock =
>>> - adev->clock.default_sclk * 10;
>>> - dev_info->max_memory_clock =
>>> - dev_info->min_memory_clock =
>>> - adev->clock.default_mclk * 10;
>>> - }
>>> - dev_info->enabled_rb_pipes_mask =
>>> adev->gfx.config.backend_enable_mask;
>>> - dev_info->num_rb_pipes = adev->gfx.config.max_backends_per_se *
>>> - adev->gfx.config.max_shader_engines;
>>> - dev_info->num_hw_gfx_contexts =
>>> adev->gfx.config.max_hw_contexts;
>>> - dev_info->ids_flags = 0;
>>> - if (adev->flags & AMD_IS_APU)
>>> - dev_info->ids_flags |= AMDGPU_IDS_FLAGS_FUSION;
>>> - if (adev->gfx.mcbp)
>>> - dev_info->ids_flags |= AMDGPU_IDS_FLAGS_PREEMPTION;
>>> - if (amdgpu_is_tmz(adev))
>>> - dev_info->ids_flags |= AMDGPU_IDS_FLAGS_TMZ;
>>> - if (adev->gfx.config.ta_cntl2_truncate_coord_mode)
>>> - dev_info->ids_flags |=
>>> AMDGPU_IDS_FLAGS_CONFORMANT_TRUNC_COORD;
>>> -
>>> - vm_size = adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE;
>>> - vm_size -= AMDGPU_VA_RESERVED_TOP;
>>> -
>>> - /* Older VCE FW versions are buggy and can handle only
>>> 40bits */
>>> - if (adev->vce.fw_version &&
>>> - adev->vce.fw_version < AMDGPU_VCE_FW_53_45)
>>> - vm_size = min(vm_size, 1ULL << 40);
>>> -
>>> - dev_info->virtual_address_offset = AMDGPU_VA_RESERVED_BOTTOM;
>>> - dev_info->virtual_address_max =
>>> - min(vm_size, AMDGPU_GMC_HOLE_START);
>>> -
>>> - if (vm_size > AMDGPU_GMC_HOLE_START) {
>>> - dev_info->high_va_offset = AMDGPU_GMC_HOLE_END;
>>> - dev_info->high_va_max = AMDGPU_GMC_HOLE_END | vm_size;
>>> - }
>>> - dev_info->virtual_address_alignment = max_t(u32, PAGE_SIZE,
>>> AMDGPU_GPU_PAGE_SIZE);
>>> - dev_info->pte_fragment_size = (1 <<
>>> adev->vm_manager.fragment_size) * AMDGPU_GPU_PAGE_SIZE;
>>> - dev_info->gart_page_size = max_t(u32, PAGE_SIZE,
>>> AMDGPU_GPU_PAGE_SIZE);
>>> - dev_info->cu_active_number = adev->gfx.cu_info.number;
>>> - dev_info->cu_ao_mask = adev->gfx.cu_info.ao_cu_mask;
>>> - dev_info->ce_ram_size = adev->gfx.ce_ram_size;
>>> - memcpy(&dev_info->cu_ao_bitmap[0],
>>> &adev->gfx.cu_info.ao_cu_bitmap[0],
>>> - sizeof(adev->gfx.cu_info.ao_cu_bitmap));
>>> - memcpy(&dev_info->cu_bitmap[0], &adev->gfx.cu_info.bitmap[0],
>>> - sizeof(dev_info->cu_bitmap));
>>> - dev_info->vram_type = adev->gmc.vram_type;
>>> - dev_info->vram_bit_width = adev->gmc.vram_width;
>>> - dev_info->vce_harvest_config = adev->vce.harvest_config;
>>> - dev_info->gc_double_offchip_lds_buf =
>>> - adev->gfx.config.double_offchip_lds_buf;
>>> - dev_info->wave_front_size = adev->gfx.cu_info.wave_front_size;
>>> - dev_info->num_shader_visible_vgprs = adev->gfx.config.max_gprs;
>>> - dev_info->num_cu_per_sh = adev->gfx.config.max_cu_per_sh;
>>> - dev_info->num_tcc_blocks =
>>> adev->gfx.config.max_texture_channel_caches;
>>> - dev_info->gs_vgt_table_depth =
>>> adev->gfx.config.gs_vgt_table_depth;
>>> - dev_info->gs_prim_buffer_depth =
>>> adev->gfx.config.gs_prim_buffer_depth;
>>> - dev_info->max_gs_waves_per_vgt =
>>> adev->gfx.config.max_gs_threads;
>>> -
>>> - if (adev->family >= AMDGPU_FAMILY_NV)
>>> - dev_info->pa_sc_tile_steering_override =
>>> - adev->gfx.config.pa_sc_tile_steering_override;
>>> -
>>> - dev_info->tcc_disabled_mask =
>>> adev->gfx.config.tcc_disabled_mask;
>>> -
>>> - /* Combine the chip gen mask with the platform (CPU/mobo)
>>> mask. */
>>> - pcie_gen_mask = adev->pm.pcie_gen_mask &
>>> (adev->pm.pcie_gen_mask >> 16);
>>> - dev_info->pcie_gen = fls(pcie_gen_mask);
>>> - dev_info->pcie_num_lanes =
>>> - adev->pm.pcie_mlw_mask &
>>> CAIL_PCIE_LINK_WIDTH_SUPPORT_X32 ? 32 :
>>> - adev->pm.pcie_mlw_mask &
>>> CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 ? 16 :
>>> - adev->pm.pcie_mlw_mask &
>>> CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 ? 12 :
>>> - adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X8
>>> ? 8 :
>>> - adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X4
>>> ? 4 :
>>> - adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X2
>>> ? 2 : 1;
>>> -
>>> - dev_info->tcp_cache_size = adev->gfx.config.gc_tcp_l1_size;
>>> - dev_info->num_sqc_per_wgp =
>>> adev->gfx.config.gc_num_sqc_per_wgp;
>>> - dev_info->sqc_data_cache_size =
>>> adev->gfx.config.gc_l1_data_cache_size_per_sqc;
>>> - dev_info->sqc_inst_cache_size =
>>> adev->gfx.config.gc_l1_instruction_cache_size_per_sqc;
>>> - dev_info->gl1c_cache_size =
>>> adev->gfx.config.gc_gl1c_size_per_instance *
>>> - adev->gfx.config.gc_gl1c_per_sa;
>>> - dev_info->gl2c_cache_size = adev->gfx.config.gc_gl2c_per_gpu;
>>> - dev_info->mall_size = adev->gmc.mall_size;
>>> -
>>> -
>>> - if (adev->gfx.funcs->get_gfx_shadow_info) {
>>> - struct amdgpu_gfx_shadow_info shadow_info;
>>> -
>>> - ret = amdgpu_gfx_get_gfx_shadow_info(adev, &shadow_info);
>>> - if (!ret) {
>>> - dev_info->shadow_size = shadow_info.shadow_size;
>>> - dev_info->shadow_alignment =
>>> shadow_info.shadow_alignment;
>>> - dev_info->csa_size = shadow_info.csa_size;
>>> - dev_info->csa_alignment = shadow_info.csa_alignment;
>>> - }
>>> + ret = amdgpu_device_info(adev, dev_info);
>>> + if (!ret) {
>>> + kfree(dev_info);
>>> + return ret;
>>> }
>>> ret = copy_to_user(out, dev_info,