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Message-ID: <8e36fae9-6501-435e-a01c-93990bef57f7@gmail.com>
Date: Tue, 19 Mar 2024 15:56:22 +0100
From: Christian König <ckoenig.leichtzumerken@...il.com>
To: Alex Deucher <alexdeucher@...il.com>, Sunil Khatri <sunil.khatri@....com>
Cc: Alex Deucher <alexander.deucher@....com>,
Christian König <christian.koenig@....com>,
Shashank Sharma <shashank.sharma@....com>, amd-gfx@...ts.freedesktop.org,
dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
Hawking Zhang <Hawking.Zhang@....com>,
Felix Kuehling <Felix.Kuehling@....com>, Lijo Lazar <lijo.lazar@....com>
Subject: Re: [PATCH] drm/amdgpu: refactor code to reuse system information
Am 19.03.24 um 15:26 schrieb Alex Deucher:
> On Tue, Mar 19, 2024 at 8:32 AM Sunil Khatri <sunil.khatri@....com> 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 <christian.koenig@....com>
>> Cc: Alex Deucher <alexander.deucher@....com>
>> Signed-off-by: Sunil Khatri <sunil.khatri@....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..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)
> We can probably keep this in amdgpu_kms.c unless that file is getting
> too big. I don't think it warrants a new file at this point. If you
> do keep it in amdgpu_kms.c, I'd recommend renaming it to something
> like amdgpu_kms_device_info() to keep the naming conventions.
We should not be using this for anything new in the first place.
A whole bunch of the stuff inside the devinfo structure has been
deprecated because we found that putting everything into one structure
was a bad idea.
Regards,
Christian.
>
>> +{
>> + 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 ret;
>> +}
> As noted by Lijo, this should probably be a void function since we
> want to populate as much information as we can and we can't break the
> IOCTL interface.
>
> Alex
>
>> 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,
>> --
>> 2.34.1
>>
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