1/* SPDX-License-Identifier: MIT */ 2/* 3 * Copyright �� 2014-2019 Intel Corporation 4 */ 5 6#ifndef _INTEL_UC_FW_H_ 7#define _INTEL_UC_FW_H_ 8 9#include <linux/sizes.h> 10#include <linux/types.h> 11#include "intel_uc_fw_abi.h" 12#include "intel_device_info.h" 13#include "i915_gem.h" 14#include "i915_vma.h" 15 16struct drm_printer; 17struct drm_i915_private; 18struct intel_gt; 19 20/* Home of GuC, HuC and DMC firmwares */ 21#define INTEL_UC_FIRMWARE_URL "https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/i915" 22 23/* 24 * +------------+---------------------------------------------------+ 25 * | PHASE | FIRMWARE STATUS TRANSITIONS | 26 * +============+===================================================+ 27 * | | UNINITIALIZED | 28 * +------------+- / | \ -+ 29 * | | DISABLED <--/ | \--> NOT_SUPPORTED | 30 * | init_early | V | 31 * | | SELECTED | 32 * +------------+- / | \ -+ 33 * | | MISSING <--/ | \--> ERROR | 34 * | fetch | V | 35 * | | AVAILABLE | 36 * +------------+- | \ -+ 37 * | | | \--> INIT FAIL | 38 * | init | V | 39 * | | /------> LOADABLE <----<-----------\ | 40 * +------------+- \ / \ \ \ -+ 41 * | | LOAD FAIL <--< \--> TRANSFERRED \ | 42 * | upload | \ / \ / | 43 * | | \---------/ \--> RUNNING | 44 * +------------+---------------------------------------------------+ 45 */ 46 47enum intel_uc_fw_status { 48 INTEL_UC_FIRMWARE_NOT_SUPPORTED = -1, /* no uc HW */ 49 INTEL_UC_FIRMWARE_UNINITIALIZED = 0, /* used to catch checks done too early */ 50 INTEL_UC_FIRMWARE_DISABLED, /* disabled */ 51 INTEL_UC_FIRMWARE_SELECTED, /* selected the blob we want to load */ 52 INTEL_UC_FIRMWARE_MISSING, /* blob not found on the system */ 53 INTEL_UC_FIRMWARE_ERROR, /* invalid format or version */ 54 INTEL_UC_FIRMWARE_AVAILABLE, /* blob found and copied in mem */ 55 INTEL_UC_FIRMWARE_INIT_FAIL, /* failed to prepare fw objects for load */ 56 INTEL_UC_FIRMWARE_LOADABLE, /* all fw-required objects are ready */ 57 INTEL_UC_FIRMWARE_LOAD_FAIL, /* failed to xfer or init/auth the fw */ 58 INTEL_UC_FIRMWARE_TRANSFERRED, /* dma xfer done */ 59 INTEL_UC_FIRMWARE_RUNNING /* init/auth done */ 60}; 61 62enum intel_uc_fw_type { 63 INTEL_UC_FW_TYPE_GUC = 0, 64 INTEL_UC_FW_TYPE_HUC, 65 INTEL_UC_FW_TYPE_GSC, 66}; 67#define INTEL_UC_FW_NUM_TYPES 3 68 69struct intel_uc_fw_ver { 70 u32 major; 71 u32 minor; 72 u32 patch; 73 u32 build; 74}; 75 76/* 77 * The firmware build process will generate a version header file with major and 78 * minor version defined. The versions are built into CSS header of firmware. 79 * i915 kernel driver set the minimal firmware version required per platform. 80 */ 81struct intel_uc_fw_file { 82 const char *path; 83 struct intel_uc_fw_ver ver; 84}; 85 86/* 87 * This structure encapsulates all the data needed during the process 88 * of fetching, caching, and loading the firmware image into the uC. 89 */ 90struct intel_uc_fw { 91 enum intel_uc_fw_type type; 92 union { 93 const enum intel_uc_fw_status status; 94 enum intel_uc_fw_status __status; /* no accidental overwrites */ 95 }; 96 struct intel_uc_fw_file file_wanted; 97 struct intel_uc_fw_file file_selected; 98 bool user_overridden; 99 size_t size; 100 struct drm_i915_gem_object *obj; 101 102 /** 103 * @needs_ggtt_mapping: indicates whether the fw object needs to be 104 * pinned to ggtt. If true, the fw is pinned at init time and unpinned 105 * during driver unload. 106 */ 107 bool needs_ggtt_mapping; 108 109 /** 110 * @vma_res: A vma resource used in binding the uc fw to ggtt. The fw is 111 * pinned in a reserved area of the ggtt (above the maximum address 112 * usable by GuC); therefore, we can't use the normal vma functions to 113 * do the pinning and we instead use this resource to do so. 114 */ 115 struct i915_vma_resource vma_res; 116 struct i915_vma *rsa_data; 117 118 u32 rsa_size; 119 u32 ucode_size; 120 u32 private_data_size; 121 122 u32 dma_start_offset; 123 124 bool has_gsc_headers; 125}; 126 127/* 128 * When we load the uC binaries, we pin them in a reserved section at the top of 129 * the GGTT, which is ~18 MBs. On multi-GT systems where the GTs share the GGTT, 130 * we also need to make sure that each binary is pinned to a unique location 131 * during load, because the different GT can go through the FW load at the same 132 * time (see uc_fw_ggtt_offset() for details). 133 * Given that the available space is much greater than what is required by the 134 * binaries, to keep things simple instead of dynamically partitioning the 135 * reserved section to make space for all the blobs we can just reserve a static 136 * chunk for each binary. 137 */ 138#define INTEL_UC_RSVD_GGTT_PER_FW SZ_2M 139 140#ifdef CONFIG_DRM_I915_DEBUG_GUC 141void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw, 142 enum intel_uc_fw_status status); 143#else 144static inline void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw, 145 enum intel_uc_fw_status status) 146{ 147 uc_fw->__status = status; 148} 149#endif 150 151static inline 152const char *intel_uc_fw_status_repr(enum intel_uc_fw_status status) 153{ 154 switch (status) { 155 case INTEL_UC_FIRMWARE_NOT_SUPPORTED: 156 return "N/A"; 157 case INTEL_UC_FIRMWARE_UNINITIALIZED: 158 return "UNINITIALIZED"; 159 case INTEL_UC_FIRMWARE_DISABLED: 160 return "DISABLED"; 161 case INTEL_UC_FIRMWARE_SELECTED: 162 return "SELECTED"; 163 case INTEL_UC_FIRMWARE_MISSING: 164 return "MISSING"; 165 case INTEL_UC_FIRMWARE_ERROR: 166 return "ERROR"; 167 case INTEL_UC_FIRMWARE_AVAILABLE: 168 return "AVAILABLE"; 169 case INTEL_UC_FIRMWARE_INIT_FAIL: 170 return "INIT FAIL"; 171 case INTEL_UC_FIRMWARE_LOADABLE: 172 return "LOADABLE"; 173 case INTEL_UC_FIRMWARE_LOAD_FAIL: 174 return "LOAD FAIL"; 175 case INTEL_UC_FIRMWARE_TRANSFERRED: 176 return "TRANSFERRED"; 177 case INTEL_UC_FIRMWARE_RUNNING: 178 return "RUNNING"; 179 } 180 return "<invalid>"; 181} 182 183static inline int intel_uc_fw_status_to_error(enum intel_uc_fw_status status) 184{ 185 switch (status) { 186 case INTEL_UC_FIRMWARE_NOT_SUPPORTED: 187 return -ENODEV; 188 case INTEL_UC_FIRMWARE_UNINITIALIZED: 189 return -EACCES; 190 case INTEL_UC_FIRMWARE_DISABLED: 191 return -EPERM; 192 case INTEL_UC_FIRMWARE_MISSING: 193 return -ENOENT; 194 case INTEL_UC_FIRMWARE_ERROR: 195 return -ENOEXEC; 196 case INTEL_UC_FIRMWARE_INIT_FAIL: 197 case INTEL_UC_FIRMWARE_LOAD_FAIL: 198 return -EIO; 199 case INTEL_UC_FIRMWARE_SELECTED: 200 return -ESTALE; 201 case INTEL_UC_FIRMWARE_AVAILABLE: 202 case INTEL_UC_FIRMWARE_LOADABLE: 203 case INTEL_UC_FIRMWARE_TRANSFERRED: 204 case INTEL_UC_FIRMWARE_RUNNING: 205 return 0; 206 } 207 return -EINVAL; 208} 209 210static inline const char *intel_uc_fw_type_repr(enum intel_uc_fw_type type) 211{ 212 switch (type) { 213 case INTEL_UC_FW_TYPE_GUC: 214 return "GuC"; 215 case INTEL_UC_FW_TYPE_HUC: 216 return "HuC"; 217 case INTEL_UC_FW_TYPE_GSC: 218 return "GSC"; 219 } 220 return "uC"; 221} 222 223static inline enum intel_uc_fw_status 224__intel_uc_fw_status(struct intel_uc_fw *uc_fw) 225{ 226 /* shouldn't call this before checking hw/blob availability */ 227 GEM_BUG_ON(uc_fw->status == INTEL_UC_FIRMWARE_UNINITIALIZED); 228 return uc_fw->status; 229} 230 231static inline bool intel_uc_fw_is_supported(struct intel_uc_fw *uc_fw) 232{ 233 return __intel_uc_fw_status(uc_fw) != INTEL_UC_FIRMWARE_NOT_SUPPORTED; 234} 235 236static inline bool intel_uc_fw_is_enabled(struct intel_uc_fw *uc_fw) 237{ 238 return __intel_uc_fw_status(uc_fw) > INTEL_UC_FIRMWARE_DISABLED; 239} 240 241static inline bool intel_uc_fw_is_available(struct intel_uc_fw *uc_fw) 242{ 243 return __intel_uc_fw_status(uc_fw) >= INTEL_UC_FIRMWARE_AVAILABLE; 244} 245 246static inline bool intel_uc_fw_is_loadable(struct intel_uc_fw *uc_fw) 247{ 248 return __intel_uc_fw_status(uc_fw) >= INTEL_UC_FIRMWARE_LOADABLE; 249} 250 251static inline bool intel_uc_fw_is_loaded(struct intel_uc_fw *uc_fw) 252{ 253 return __intel_uc_fw_status(uc_fw) >= INTEL_UC_FIRMWARE_TRANSFERRED; 254} 255 256static inline bool intel_uc_fw_is_running(struct intel_uc_fw *uc_fw) 257{ 258 return __intel_uc_fw_status(uc_fw) == INTEL_UC_FIRMWARE_RUNNING; 259} 260 261static inline bool intel_uc_fw_is_overridden(const struct intel_uc_fw *uc_fw) 262{ 263 return uc_fw->user_overridden; 264} 265 266static inline void intel_uc_fw_sanitize(struct intel_uc_fw *uc_fw) 267{ 268 if (intel_uc_fw_is_loaded(uc_fw)) 269 intel_uc_fw_change_status(uc_fw, INTEL_UC_FIRMWARE_LOADABLE); 270} 271 272static inline u32 __intel_uc_fw_get_upload_size(struct intel_uc_fw *uc_fw) 273{ 274 return sizeof(struct uc_css_header) + uc_fw->ucode_size; 275} 276 277/** 278 * intel_uc_fw_get_upload_size() - Get size of firmware needed to be uploaded. 279 * @uc_fw: uC firmware. 280 * 281 * Get the size of the firmware and header that will be uploaded to WOPCM. 282 * 283 * Return: Upload firmware size, or zero on firmware fetch failure. 284 */ 285static inline u32 intel_uc_fw_get_upload_size(struct intel_uc_fw *uc_fw) 286{ 287 if (!intel_uc_fw_is_available(uc_fw)) 288 return 0; 289 290 return __intel_uc_fw_get_upload_size(uc_fw); 291} 292 293void intel_uc_fw_version_from_gsc_manifest(struct intel_uc_fw_ver *ver, 294 const void *data); 295int intel_uc_check_file_version(struct intel_uc_fw *uc_fw, bool *old_ver); 296void intel_uc_fw_init_early(struct intel_uc_fw *uc_fw, 297 enum intel_uc_fw_type type, 298 bool needs_ggtt_mapping); 299int intel_uc_fw_fetch(struct intel_uc_fw *uc_fw); 300void intel_uc_fw_cleanup_fetch(struct intel_uc_fw *uc_fw); 301int intel_uc_fw_upload(struct intel_uc_fw *uc_fw, u32 offset, u32 dma_flags); 302int intel_uc_fw_init(struct intel_uc_fw *uc_fw); 303void intel_uc_fw_fini(struct intel_uc_fw *uc_fw); 304void intel_uc_fw_resume_mapping(struct intel_uc_fw *uc_fw); 305size_t intel_uc_fw_copy_rsa(struct intel_uc_fw *uc_fw, void *dst, u32 max_len); 306int intel_uc_fw_mark_load_failed(struct intel_uc_fw *uc_fw, int err); 307void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p); 308 309#endif 310