2 * Copyright 2016 Advanced Micro Devices, Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
24 #include <drm/amdgpu_drm.h>
26 #include "atomfirmware.h"
27 #include "amdgpu_atomfirmware.h"
31 #define get_index_into_master_table(master_table, table_name) (offsetof(struct master_table, table_name) / sizeof(uint16_t))
33 bool amdgpu_atomfirmware_gpu_supports_virtualization(struct amdgpu_device *adev)
35 int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
39 if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, NULL,
40 NULL, NULL, &data_offset)) {
41 struct atom_firmware_info_v3_1 *firmware_info =
42 (struct atom_firmware_info_v3_1 *)(adev->mode_info.atom_context->bios +
45 if (le32_to_cpu(firmware_info->firmware_capability) &
46 ATOM_FIRMWARE_CAP_GPU_VIRTUALIZATION)
52 void amdgpu_atomfirmware_scratch_regs_init(struct amdgpu_device *adev)
54 int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
58 if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, NULL,
59 NULL, NULL, &data_offset)) {
60 struct atom_firmware_info_v3_1 *firmware_info =
61 (struct atom_firmware_info_v3_1 *)(adev->mode_info.atom_context->bios +
64 adev->bios_scratch_reg_offset =
65 le32_to_cpu(firmware_info->bios_scratch_reg_startaddr);
69 void amdgpu_atomfirmware_scratch_regs_save(struct amdgpu_device *adev)
73 for (i = 0; i < AMDGPU_BIOS_NUM_SCRATCH; i++)
74 adev->bios_scratch[i] = RREG32(adev->bios_scratch_reg_offset + i);
77 void amdgpu_atomfirmware_scratch_regs_restore(struct amdgpu_device *adev)
82 * VBIOS will check ASIC_INIT_COMPLETE bit to decide if
83 * execute ASIC_Init posting via driver
85 adev->bios_scratch[7] &= ~ATOM_S7_ASIC_INIT_COMPLETE_MASK;
87 for (i = 0; i < AMDGPU_BIOS_NUM_SCRATCH; i++)
88 WREG32(adev->bios_scratch_reg_offset + i, adev->bios_scratch[i]);
91 void amdgpu_atomfirmware_scratch_regs_engine_hung(struct amdgpu_device *adev,
94 u32 tmp = RREG32(adev->bios_scratch_reg_offset + 3);
97 tmp |= ATOM_S3_ASIC_GUI_ENGINE_HUNG;
99 tmp &= ~ATOM_S3_ASIC_GUI_ENGINE_HUNG;
101 WREG32(adev->bios_scratch_reg_offset + 3, tmp);
104 int amdgpu_atomfirmware_allocate_fb_scratch(struct amdgpu_device *adev)
106 struct atom_context *ctx = adev->mode_info.atom_context;
107 int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
108 vram_usagebyfirmware);
109 uint16_t data_offset;
112 if (amdgpu_atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) {
113 struct vram_usagebyfirmware_v2_1 *firmware_usage =
114 (struct vram_usagebyfirmware_v2_1 *)(ctx->bios + data_offset);
116 DRM_DEBUG("atom firmware requested %08x %dkb fw %dkb drv\n",
117 le32_to_cpu(firmware_usage->start_address_in_kb),
118 le16_to_cpu(firmware_usage->used_by_firmware_in_kb),
119 le16_to_cpu(firmware_usage->used_by_driver_in_kb));
121 usage_bytes = le16_to_cpu(firmware_usage->used_by_driver_in_kb) * 1024;
123 ctx->scratch_size_bytes = 0;
124 if (usage_bytes == 0)
125 usage_bytes = 20 * 1024;
126 /* allocate some scratch memory */
127 ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL);
130 ctx->scratch_size_bytes = usage_bytes;