drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c

   1 /*
   2  * Copyright 2016 Advanced Micro Devices, Inc.
   3  *
   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:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  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.
  21  *
  22  */
  23 #include <drm/drmP.h>
  24 #include <drm/amdgpu_drm.h>
  25 #include "amdgpu.h"
  26 #include "atomfirmware.h"
  27 #include "amdgpu_atomfirmware.h"
  28 #include "atom.h"
  29 #include "atombios.h"
  30
  31 #define get_index_into_master_table(master_table, table_name) (offsetof(struct master_table, table_name) / sizeof(uint16_t))
  32
  33 bool amdgpu_atomfirmware_gpu_supports_virtualization(struct amdgpu_device *adev)
  34 {
  35         int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
  36                                                 firmwareinfo);
  37         uint16_t data_offset;
  38
  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 +
  43                                                            data_offset);
  44
  45                 if (le32_to_cpu(firmware_info->firmware_capability) &
  46                     ATOM_FIRMWARE_CAP_GPU_VIRTUALIZATION)
  47                         return true;
  48         }
  49         return false;
  50 }
  51
  52 void amdgpu_atomfirmware_scratch_regs_init(struct amdgpu_device *adev)
  53 {
  54         int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
  55                                                 firmwareinfo);
  56         uint16_t data_offset;
  57
  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 +
  62                                                            data_offset);
  63
  64                 adev->bios_scratch_reg_offset =
  65                         le32_to_cpu(firmware_info->bios_scratch_reg_startaddr);
  66         }
  67 }
  68
  69 void amdgpu_atomfirmware_scratch_regs_save(struct amdgpu_device *adev)
  70 {
  71         int i;
  72
  73         for (i = 0; i < AMDGPU_BIOS_NUM_SCRATCH; i++)
  74                 adev->bios_scratch[i] = RREG32(adev->bios_scratch_reg_offset + i);
  75 }
  76
  77 void amdgpu_atomfirmware_scratch_regs_restore(struct amdgpu_device *adev)
  78 {
  79         int i;
  80
  81         /*
  82          * VBIOS will check ASIC_INIT_COMPLETE bit to decide if
  83          * execute ASIC_Init posting via driver
  84          */
  85         adev->bios_scratch[7] &= ~ATOM_S7_ASIC_INIT_COMPLETE_MASK;
  86
  87         for (i = 0; i < AMDGPU_BIOS_NUM_SCRATCH; i++)
  88                 WREG32(adev->bios_scratch_reg_offset + i, adev->bios_scratch[i]);
  89 }
  90
  91 void amdgpu_atomfirmware_scratch_regs_engine_hung(struct amdgpu_device *adev,
  92                                                   bool hung)
  93 {
  94         u32 tmp = RREG32(adev->bios_scratch_reg_offset + 3);
  95
  96         if (hung)
  97                 tmp |= ATOM_S3_ASIC_GUI_ENGINE_HUNG;
  98         else
  99                 tmp &= ~ATOM_S3_ASIC_GUI_ENGINE_HUNG;
 100
 101         WREG32(adev->bios_scratch_reg_offset + 3, tmp);
 102 }
 103
 104 int amdgpu_atomfirmware_allocate_fb_scratch(struct amdgpu_device *adev)
 105 {
 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;
 110         int usage_bytes = 0;
 111
 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);
 115
 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));
 120
 121                 usage_bytes = le16_to_cpu(firmware_usage->used_by_driver_in_kb) * 1024;
 122         }
 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);
 128         if (!ctx->scratch)
 129                 return -ENOMEM;
 130         ctx->scratch_size_bytes = usage_bytes;
 131         return 0;
 132 }