diff mbox series

[v2] drm/amdgpu: refactor code to reuse system information

Message ID 20240319142552.893674-1-sunil.khatri@amd.com (mailing list archive)
State New, archived
Headers show
Series [v2] drm/amdgpu: refactor code to reuse system information | expand

Commit Message

Sunil Khatri March 19, 2024, 2:25 p.m. UTC
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 ioctl, debugfs
and devcoredump.

Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
---
 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

Comments

Christian König March 19, 2024, 2:37 p.m. UTC | #1
Am 19.03.24 um 15:25 schrieb Sunil Khatri:
> 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 ioctl, debugfs
> and devcoredump.

Ok, taking a closer look that is certainly not a good idea.

The devinfo structure was just created because somebody thought that 
mixing all that stuff into one structure would be a good idea.

We have pretty much deprecated that approach and should *really* not 
change anything here any more.

Regards,
Christian.

>
> Cc: Christian König <christian.koenig@amd.com>
> Cc: Alex Deucher <alexander.deucher@amd.com>
> Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
> ---
>   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..fdcbc1984031
> --- /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);
> +		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 0;
> +}
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> index a66d47865e3b..c924ba14f9a4 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 == -EINVAL) {
> +			kfree(dev_info);
> +			return ret;
>   		}
>   
>   		ret = copy_to_user(out, dev_info,
Khatri, Sunil March 19, 2024, 2:44 p.m. UTC | #2
On 3/19/2024 8:07 PM, Christian König wrote:
> Am 19.03.24 um 15:25 schrieb Sunil Khatri:
>> 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 ioctl, debugfs
>> and devcoredump.
>
> Ok, taking a closer look that is certainly not a good idea.
>
> The devinfo structure was just created because somebody thought that 
> mixing all that stuff into one structure would be a good idea.
>
> We have pretty much deprecated that approach and should *really* not 
> change anything here any more.
To support the ioctl we are keeping that information same without 
changing it. The intent to add a new file is because we will have more 
information coming in this new file. Next in line is firmware 
information which is again a huge function with lot of information and 
to use that information in devcoredump and ioctl and sysfs the new file 
seems to be right idea after some discussions.
FYI: this will not be just one function in new file but more to come so 
code can be reused without copying it.
>
> Regards,
> Christian.
>
>>
>> Cc: Christian König <christian.koenig@amd.com>
>> Cc: Alex Deucher <alexander.deucher@amd.com>
>> Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
>> ---
>>   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..fdcbc1984031
>> --- /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);
>> +        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 0;
>> +}
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c 
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
>> index a66d47865e3b..c924ba14f9a4 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 == -EINVAL) {
>> +            kfree(dev_info);
>> +            return ret;
>>           }
>>             ret = copy_to_user(out, dev_info,
>
Christian König March 19, 2024, 2:55 p.m. UTC | #3
Am 19.03.24 um 15:44 schrieb Khatri, Sunil:
>
> On 3/19/2024 8:07 PM, Christian König wrote:
>> Am 19.03.24 um 15:25 schrieb Sunil Khatri:
>>> 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 ioctl, debugfs
>>> and devcoredump.
>>
>> Ok, taking a closer look that is certainly not a good idea.
>>
>> The devinfo structure was just created because somebody thought that 
>> mixing all that stuff into one structure would be a good idea.
>>
>> We have pretty much deprecated that approach and should *really* not 
>> change anything here any more.
> To support the ioctl we are keeping that information same without 
> changing it. The intent to add a new file is because we will have more 
> information coming in this new file. Next in line is firmware 
> information which is again a huge function with lot of information and 
> to use that information in devcoredump and ioctl and sysfs the new 
> file seems to be right idea after some discussions.
> FYI: this will not be just one function in new file but more to come 
> so code can be reused without copying it.

That is exactly the point. I would say we should really *not* use that 
code for devcoredump.

This code is rather deprecated and we expose a lot of the information 
through other IOCTLs.

So the problem here isn't that you want to add a new file, but rather 
that you touch deprecated functionality.

Regards,
Christian.

>>
>> Regards,
>> Christian.
>>
>>>
>>> Cc: Christian König <christian.koenig@amd.com>
>>> Cc: Alex Deucher <alexander.deucher@amd.com>
>>> Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
>>> ---
>>>   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..fdcbc1984031
>>> --- /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);
>>> +        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 0;
>>> +}
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c 
>>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
>>> index a66d47865e3b..c924ba14f9a4 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 == -EINVAL) {
>>> +            kfree(dev_info);
>>> +            return ret;
>>>           }
>>>             ret = copy_to_user(out, dev_info,
>>
diff mbox series

Patch

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..fdcbc1984031
--- /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);
+		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 0;
+}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index a66d47865e3b..c924ba14f9a4 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 == -EINVAL) {
+			kfree(dev_info);
+			return ret;
 		}
 
 		ret = copy_to_user(out, dev_info,