cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/amd/amdgpu/kv_smc.c

/*
 * Copyright 2013 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.
 *
 * Authors: Alex Deucher
 */

#include "drmP.h"
#include "amdgpu.h"
#include "cikd.h"
#include "kv_dpm.h"

#include "smu/smu_7_0_0_d.h"
#include "smu/smu_7_0_0_sh_mask.h"


int amdgpu_kv_notify_message_to_smu(struct amdgpu_device *adev, u32 id) { u32 i; u32 tmp = 0; WREG32(mmSMC_MESSAGE_0, id & SMC_MESSAGE_0__SMC_MSG_MASK); for (i = 0; i < adev->usec_timeout; i++) { if ((RREG32(mmSMC_RESP_0) & SMC_RESP_0__SMC_RESP_MASK) != 0) break; udelay(1); } tmp = RREG32(mmSMC_RESP_0) & SMC_RESP_0__SMC_RESP_MASK; if (tmp != 1) { if (tmp == 0xFF) return -EINVAL; else if (tmp == 0xFE) return -EINVAL; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alex Deucher107100.00%1100.00%
Total107100.00%1100.00%


int amdgpu_kv_dpm_get_enable_mask(struct amdgpu_device *adev, u32 *enable_mask) { int ret; ret = amdgpu_kv_notify_message_to_smu(adev, PPSMC_MSG_SCLKDPM_GetEnabledMask); if (ret == 0) *enable_mask = RREG32_SMC(ixSMC_SYSCON_MSG_ARG_0); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Alex Deucher43100.00%1100.00%
Total43100.00%1100.00%


int amdgpu_kv_send_msg_to_smc_with_parameter(struct amdgpu_device *adev, PPSMC_Msg msg, u32 parameter) { WREG32(mmSMC_MSG_ARG_0, parameter); return amdgpu_kv_notify_message_to_smu(adev, msg); }

Contributors

PersonTokensPropCommitsCommitProp
Alex Deucher31100.00%1100.00%
Total31100.00%1100.00%


static int kv_set_smc_sram_address(struct amdgpu_device *adev, u32 smc_address, u32 limit) { if (smc_address & 3) return -EINVAL; if ((smc_address + 3) > limit) return -EINVAL; WREG32(mmSMC_IND_INDEX_0, smc_address); WREG32_P(mmSMC_IND_ACCESS_CNTL, 0, ~SMC_IND_ACCESS_CNTL__AUTO_INCREMENT_IND_0_MASK); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alex Deucher61100.00%1100.00%
Total61100.00%1100.00%


int amdgpu_kv_read_smc_sram_dword(struct amdgpu_device *adev, u32 smc_address, u32 *value, u32 limit) { int ret; ret = kv_set_smc_sram_address(adev, smc_address, limit); if (ret) return ret; *value = RREG32(mmSMC_IND_DATA_0); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alex Deucher52100.00%1100.00%
Total52100.00%1100.00%


int amdgpu_kv_smc_dpm_enable(struct amdgpu_device *adev, bool enable) { if (enable) return amdgpu_kv_notify_message_to_smu(adev, PPSMC_MSG_DPM_Enable); else return amdgpu_kv_notify_message_to_smu(adev, PPSMC_MSG_DPM_Disable); }

Contributors

PersonTokensPropCommitsCommitProp
Alex Deucher34100.00%1100.00%
Total34100.00%1100.00%


int amdgpu_kv_smc_bapm_enable(struct amdgpu_device *adev, bool enable) { if (enable) return amdgpu_kv_notify_message_to_smu(adev, PPSMC_MSG_EnableBAPM); else return amdgpu_kv_notify_message_to_smu(adev, PPSMC_MSG_DisableBAPM); }

Contributors

PersonTokensPropCommitsCommitProp
Alex Deucher34100.00%1100.00%
Total34100.00%1100.00%


int amdgpu_kv_copy_bytes_to_smc(struct amdgpu_device *adev, u32 smc_start_address, const u8 *src, u32 byte_count, u32 limit) { int ret; u32 data, original_data, addr, extra_shift, t_byte, count, mask; if ((smc_start_address + byte_count) > limit) return -EINVAL; addr = smc_start_address; t_byte = addr & 3; /* RMW for the initial bytes */ if (t_byte != 0) { addr -= t_byte; ret = kv_set_smc_sram_address(adev, addr, limit); if (ret) return ret; original_data = RREG32(mmSMC_IND_DATA_0); data = 0; mask = 0; count = 4; while (count > 0) { if (t_byte > 0) { mask = (mask << 8) | 0xff; t_byte--; } else if (byte_count > 0) { data = (data << 8) + *src++; byte_count--; mask <<= 8; } else { data <<= 8; mask = (mask << 8) | 0xff; } count--; } data |= original_data & mask; ret = kv_set_smc_sram_address(adev, addr, limit); if (ret) return ret; WREG32(mmSMC_IND_DATA_0, data); addr += 4; } while (byte_count >= 4) { /* SMC address space is BE */ data = (src[0] << 24) + (src[1] << 16) + (src[2] << 8) + src[3]; ret = kv_set_smc_sram_address(adev, addr, limit); if (ret) return ret; WREG32(mmSMC_IND_DATA_0, data); src += 4; byte_count -= 4; addr += 4; } /* RMW for the final bytes */ if (byte_count > 0) { data = 0; ret = kv_set_smc_sram_address(adev, addr, limit); if (ret) return ret; original_data = RREG32(mmSMC_IND_DATA_0); extra_shift = 8 * (4 - byte_count); while (byte_count > 0) { /* SMC address space is BE */ data = (data << 8) + *src++; byte_count--; } data <<= extra_shift; data |= (original_data & ~((~0UL) << extra_shift)); ret = kv_set_smc_sram_address(adev, addr, limit); if (ret) return ret; WREG32(mmSMC_IND_DATA_0, data); } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alex Deucher428100.00%1100.00%
Total428100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Alex Deucher809100.00%1100.00%
Total809100.00%1100.00%
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.