diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c new file mode 100644 index 000000000000..4b9abd68e04f --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c @@ -0,0 +1,112 @@ +/* + * Copyright 2016 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 <drm/drmP.h> +#include <drm/amdgpu_drm.h> +#include "amdgpu.h" +#include "atomfirmware.h" +#include "amdgpu_atomfirmware.h" +#include "atom.h" + +#define get_index_into_master_table(master_table, table_name) (offsetof(struct master_table, table_name) / sizeof(uint16_t)) + +bool amdgpu_atomfirmware_gpu_supports_virtualization(struct amdgpu_device *adev) +{ + int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1, + firmwareinfo); + uint16_t data_offset; + + if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, NULL, + NULL, NULL, &data_offset)) { + struct atom_firmware_info_v3_1 *firmware_info = + (struct atom_firmware_info_v3_1 *)(adev->mode_info.atom_context->bios + + data_offset); + + if (le32_to_cpu(firmware_info->firmware_capability) & + ATOM_FIRMWARE_CAP_GPU_VIRTUALIZATION) + return true; + } + return false; +} + +void amdgpu_atomfirmware_scratch_regs_init(struct amdgpu_device *adev) +{ + int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1, + firmwareinfo); + uint16_t data_offset; + + if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, NULL, + NULL, NULL, &data_offset)) { + struct atom_firmware_info_v3_1 *firmware_info = + (struct atom_firmware_info_v3_1 *)(adev->mode_info.atom_context->bios + + data_offset); + + adev->bios_scratch_reg_offset = + le32_to_cpu(firmware_info->bios_scratch_reg_startaddr); + } +} + +void amdgpu_atomfirmware_scratch_regs_save(struct amdgpu_device *adev) +{ + int i; + + for (i = 0; i < AMDGPU_BIOS_NUM_SCRATCH; i++) + adev->bios_scratch[i] = RREG32(adev->bios_scratch_reg_offset + i); +} + +void amdgpu_atomfirmware_scratch_regs_restore(struct amdgpu_device *adev) +{ + int i; + + for (i = 0; i < AMDGPU_BIOS_NUM_SCRATCH; i++) + WREG32(adev->bios_scratch_reg_offset + i, adev->bios_scratch[i]); +} + +int amdgpu_atomfirmware_allocate_fb_scratch(struct amdgpu_device *adev) +{ + struct atom_context *ctx = adev->mode_info.atom_context; + int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1, + vram_usagebyfirmware); + uint16_t data_offset; + int usage_bytes = 0; + + if (amdgpu_atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) { + struct vram_usagebyfirmware_v2_1 *firmware_usage = + (struct vram_usagebyfirmware_v2_1 *)(ctx->bios + data_offset); + + DRM_DEBUG("atom firmware requested %08x %dkb fw %dkb drv\n", + le32_to_cpu(firmware_usage->start_address_in_kb), + le16_to_cpu(firmware_usage->used_by_firmware_in_kb), + le16_to_cpu(firmware_usage->used_by_driver_in_kb)); + + usage_bytes = le16_to_cpu(firmware_usage->used_by_driver_in_kb) * 1024; + } + ctx->scratch_size_bytes = 0; + if (usage_bytes == 0) + usage_bytes = 20 * 1024; + /* allocate some scratch memory */ + ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL); + if (!ctx->scratch) + return -ENOMEM; + ctx->scratch_size_bytes = usage_bytes; + return 0; +} |
