forked from Minki/linux
a5bde2f964
This adds basic support for asics that use atomfirmware.h to define their vbios tables. v2: rebase v3: squash in num scratch reg fix Acked-by: Christian König <christian.koenig@amd.com> Reviewed-by: Ken Wang <Qingqing.Wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
113 lines
3.9 KiB
C
113 lines
3.9 KiB
C
/*
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* Copyright 2016 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <drm/drmP.h>
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#include <drm/amdgpu_drm.h>
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#include "amdgpu.h"
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#include "atomfirmware.h"
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#include "amdgpu_atomfirmware.h"
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#include "atom.h"
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#define get_index_into_master_table(master_table, table_name) (offsetof(struct master_table, table_name) / sizeof(uint16_t))
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bool amdgpu_atomfirmware_gpu_supports_virtualization(struct amdgpu_device *adev)
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{
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int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
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firmwareinfo);
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uint16_t data_offset;
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if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, NULL,
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NULL, NULL, &data_offset)) {
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struct atom_firmware_info_v3_1 *firmware_info =
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(struct atom_firmware_info_v3_1 *)(adev->mode_info.atom_context->bios +
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data_offset);
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if (le32_to_cpu(firmware_info->firmware_capability) &
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ATOM_FIRMWARE_CAP_GPU_VIRTUALIZATION)
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return true;
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}
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return false;
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}
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void amdgpu_atomfirmware_scratch_regs_init(struct amdgpu_device *adev)
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{
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int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
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firmwareinfo);
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uint16_t data_offset;
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if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, NULL,
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NULL, NULL, &data_offset)) {
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struct atom_firmware_info_v3_1 *firmware_info =
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(struct atom_firmware_info_v3_1 *)(adev->mode_info.atom_context->bios +
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data_offset);
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adev->bios_scratch_reg_offset =
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le32_to_cpu(firmware_info->bios_scratch_reg_startaddr);
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}
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}
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void amdgpu_atomfirmware_scratch_regs_save(struct amdgpu_device *adev)
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{
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int i;
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for (i = 0; i < AMDGPU_BIOS_NUM_SCRATCH; i++)
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adev->bios_scratch[i] = RREG32(adev->bios_scratch_reg_offset + i);
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}
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void amdgpu_atomfirmware_scratch_regs_restore(struct amdgpu_device *adev)
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{
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int i;
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for (i = 0; i < AMDGPU_BIOS_NUM_SCRATCH; i++)
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WREG32(adev->bios_scratch_reg_offset + i, adev->bios_scratch[i]);
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}
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int amdgpu_atomfirmware_allocate_fb_scratch(struct amdgpu_device *adev)
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{
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struct atom_context *ctx = adev->mode_info.atom_context;
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int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
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vram_usagebyfirmware);
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uint16_t data_offset;
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int usage_bytes = 0;
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if (amdgpu_atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) {
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struct vram_usagebyfirmware_v2_1 *firmware_usage =
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(struct vram_usagebyfirmware_v2_1 *)(ctx->bios + data_offset);
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DRM_DEBUG("atom firmware requested %08x %dkb fw %dkb drv\n",
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le32_to_cpu(firmware_usage->start_address_in_kb),
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le16_to_cpu(firmware_usage->used_by_firmware_in_kb),
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le16_to_cpu(firmware_usage->used_by_driver_in_kb));
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usage_bytes = le16_to_cpu(firmware_usage->used_by_driver_in_kb) * 1024;
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}
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ctx->scratch_size_bytes = 0;
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if (usage_bytes == 0)
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usage_bytes = 20 * 1024;
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/* allocate some scratch memory */
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ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL);
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if (!ctx->scratch)
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return -ENOMEM;
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ctx->scratch_size_bytes = usage_bytes;
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return 0;
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}
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