1 /* 2 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com> 3 * Andreas Heppel <aheppel@sysgo.de> 4 * 5 * (C) Copyright 2002 6 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 7 * 8 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 11 #ifndef _PCI_H 12 #define _PCI_H 13 14 #define PCI_CFG_SPACE_SIZE 256 15 #define PCI_CFG_SPACE_EXP_SIZE 4096 16 17 /* 18 * Under PCI, each device has 256 bytes of configuration address space, 19 * of which the first 64 bytes are standardized as follows: 20 */ 21 #define PCI_VENDOR_ID 0x00 /* 16 bits */ 22 #define PCI_DEVICE_ID 0x02 /* 16 bits */ 23 #define PCI_COMMAND 0x04 /* 16 bits */ 24 #define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */ 25 #define PCI_COMMAND_MEMORY 0x2 /* Enable response in Memory space */ 26 #define PCI_COMMAND_MASTER 0x4 /* Enable bus mastering */ 27 #define PCI_COMMAND_SPECIAL 0x8 /* Enable response to special cycles */ 28 #define PCI_COMMAND_INVALIDATE 0x10 /* Use memory write and invalidate */ 29 #define PCI_COMMAND_VGA_PALETTE 0x20 /* Enable palette snooping */ 30 #define PCI_COMMAND_PARITY 0x40 /* Enable parity checking */ 31 #define PCI_COMMAND_WAIT 0x80 /* Enable address/data stepping */ 32 #define PCI_COMMAND_SERR 0x100 /* Enable SERR */ 33 #define PCI_COMMAND_FAST_BACK 0x200 /* Enable back-to-back writes */ 34 35 #define PCI_STATUS 0x06 /* 16 bits */ 36 #define PCI_STATUS_CAP_LIST 0x10 /* Support Capability List */ 37 #define PCI_STATUS_66MHZ 0x20 /* Support 66 Mhz PCI 2.1 bus */ 38 #define PCI_STATUS_UDF 0x40 /* Support User Definable Features [obsolete] */ 39 #define PCI_STATUS_FAST_BACK 0x80 /* Accept fast-back to back */ 40 #define PCI_STATUS_PARITY 0x100 /* Detected parity error */ 41 #define PCI_STATUS_DEVSEL_MASK 0x600 /* DEVSEL timing */ 42 #define PCI_STATUS_DEVSEL_FAST 0x000 43 #define PCI_STATUS_DEVSEL_MEDIUM 0x200 44 #define PCI_STATUS_DEVSEL_SLOW 0x400 45 #define PCI_STATUS_SIG_TARGET_ABORT 0x800 /* Set on target abort */ 46 #define PCI_STATUS_REC_TARGET_ABORT 0x1000 /* Master ack of " */ 47 #define PCI_STATUS_REC_MASTER_ABORT 0x2000 /* Set on master abort */ 48 #define PCI_STATUS_SIG_SYSTEM_ERROR 0x4000 /* Set when we drive SERR */ 49 #define PCI_STATUS_DETECTED_PARITY 0x8000 /* Set on parity error */ 50 51 #define PCI_CLASS_REVISION 0x08 /* High 24 bits are class, low 8 52 revision */ 53 #define PCI_REVISION_ID 0x08 /* Revision ID */ 54 #define PCI_CLASS_PROG 0x09 /* Reg. Level Programming Interface */ 55 #define PCI_CLASS_DEVICE 0x0a /* Device class */ 56 #define PCI_CLASS_CODE 0x0b /* Device class code */ 57 #define PCI_CLASS_CODE_TOO_OLD 0x00 58 #define PCI_CLASS_CODE_STORAGE 0x01 59 #define PCI_CLASS_CODE_NETWORK 0x02 60 #define PCI_CLASS_CODE_DISPLAY 0x03 61 #define PCI_CLASS_CODE_MULTIMEDIA 0x04 62 #define PCI_CLASS_CODE_MEMORY 0x05 63 #define PCI_CLASS_CODE_BRIDGE 0x06 64 #define PCI_CLASS_CODE_COMM 0x07 65 #define PCI_CLASS_CODE_PERIPHERAL 0x08 66 #define PCI_CLASS_CODE_INPUT 0x09 67 #define PCI_CLASS_CODE_DOCKING 0x0A 68 #define PCI_CLASS_CODE_PROCESSOR 0x0B 69 #define PCI_CLASS_CODE_SERIAL 0x0C 70 #define PCI_CLASS_CODE_WIRELESS 0x0D 71 #define PCI_CLASS_CODE_I2O 0x0E 72 #define PCI_CLASS_CODE_SATELLITE 0x0F 73 #define PCI_CLASS_CODE_CRYPTO 0x10 74 #define PCI_CLASS_CODE_DATA 0x11 75 /* Base Class 0x12 - 0xFE is reserved */ 76 #define PCI_CLASS_CODE_OTHER 0xFF 77 78 #define PCI_CLASS_SUB_CODE 0x0a /* Device sub-class code */ 79 #define PCI_CLASS_SUB_CODE_TOO_OLD_NOTVGA 0x00 80 #define PCI_CLASS_SUB_CODE_TOO_OLD_VGA 0x01 81 #define PCI_CLASS_SUB_CODE_STORAGE_SCSI 0x00 82 #define PCI_CLASS_SUB_CODE_STORAGE_IDE 0x01 83 #define PCI_CLASS_SUB_CODE_STORAGE_FLOPPY 0x02 84 #define PCI_CLASS_SUB_CODE_STORAGE_IPIBUS 0x03 85 #define PCI_CLASS_SUB_CODE_STORAGE_RAID 0x04 86 #define PCI_CLASS_SUB_CODE_STORAGE_ATA 0x05 87 #define PCI_CLASS_SUB_CODE_STORAGE_SATA 0x06 88 #define PCI_CLASS_SUB_CODE_STORAGE_SAS 0x07 89 #define PCI_CLASS_SUB_CODE_STORAGE_OTHER 0x80 90 #define PCI_CLASS_SUB_CODE_NETWORK_ETHERNET 0x00 91 #define PCI_CLASS_SUB_CODE_NETWORK_TOKENRING 0x01 92 #define PCI_CLASS_SUB_CODE_NETWORK_FDDI 0x02 93 #define PCI_CLASS_SUB_CODE_NETWORK_ATM 0x03 94 #define PCI_CLASS_SUB_CODE_NETWORK_ISDN 0x04 95 #define PCI_CLASS_SUB_CODE_NETWORK_WORLDFIP 0x05 96 #define PCI_CLASS_SUB_CODE_NETWORK_PICMG 0x06 97 #define PCI_CLASS_SUB_CODE_NETWORK_OTHER 0x80 98 #define PCI_CLASS_SUB_CODE_DISPLAY_VGA 0x00 99 #define PCI_CLASS_SUB_CODE_DISPLAY_XGA 0x01 100 #define PCI_CLASS_SUB_CODE_DISPLAY_3D 0x02 101 #define PCI_CLASS_SUB_CODE_DISPLAY_OTHER 0x80 102 #define PCI_CLASS_SUB_CODE_MULTIMEDIA_VIDEO 0x00 103 #define PCI_CLASS_SUB_CODE_MULTIMEDIA_AUDIO 0x01 104 #define PCI_CLASS_SUB_CODE_MULTIMEDIA_PHONE 0x02 105 #define PCI_CLASS_SUB_CODE_MULTIMEDIA_OTHER 0x80 106 #define PCI_CLASS_SUB_CODE_MEMORY_RAM 0x00 107 #define PCI_CLASS_SUB_CODE_MEMORY_FLASH 0x01 108 #define PCI_CLASS_SUB_CODE_MEMORY_OTHER 0x80 109 #define PCI_CLASS_SUB_CODE_BRIDGE_HOST 0x00 110 #define PCI_CLASS_SUB_CODE_BRIDGE_ISA 0x01 111 #define PCI_CLASS_SUB_CODE_BRIDGE_EISA 0x02 112 #define PCI_CLASS_SUB_CODE_BRIDGE_MCA 0x03 113 #define PCI_CLASS_SUB_CODE_BRIDGE_PCI 0x04 114 #define PCI_CLASS_SUB_CODE_BRIDGE_PCMCIA 0x05 115 #define PCI_CLASS_SUB_CODE_BRIDGE_NUBUS 0x06 116 #define PCI_CLASS_SUB_CODE_BRIDGE_CARDBUS 0x07 117 #define PCI_CLASS_SUB_CODE_BRIDGE_RACEWAY 0x08 118 #define PCI_CLASS_SUB_CODE_BRIDGE_SEMI_PCI 0x09 119 #define PCI_CLASS_SUB_CODE_BRIDGE_INFINIBAND 0x0A 120 #define PCI_CLASS_SUB_CODE_BRIDGE_OTHER 0x80 121 #define PCI_CLASS_SUB_CODE_COMM_SERIAL 0x00 122 #define PCI_CLASS_SUB_CODE_COMM_PARALLEL 0x01 123 #define PCI_CLASS_SUB_CODE_COMM_MULTIPORT 0x02 124 #define PCI_CLASS_SUB_CODE_COMM_MODEM 0x03 125 #define PCI_CLASS_SUB_CODE_COMM_GPIB 0x04 126 #define PCI_CLASS_SUB_CODE_COMM_SMARTCARD 0x05 127 #define PCI_CLASS_SUB_CODE_COMM_OTHER 0x80 128 #define PCI_CLASS_SUB_CODE_PERIPHERAL_PIC 0x00 129 #define PCI_CLASS_SUB_CODE_PERIPHERAL_DMA 0x01 130 #define PCI_CLASS_SUB_CODE_PERIPHERAL_TIMER 0x02 131 #define PCI_CLASS_SUB_CODE_PERIPHERAL_RTC 0x03 132 #define PCI_CLASS_SUB_CODE_PERIPHERAL_HOTPLUG 0x04 133 #define PCI_CLASS_SUB_CODE_PERIPHERAL_SD 0x05 134 #define PCI_CLASS_SUB_CODE_PERIPHERAL_OTHER 0x80 135 #define PCI_CLASS_SUB_CODE_INPUT_KEYBOARD 0x00 136 #define PCI_CLASS_SUB_CODE_INPUT_DIGITIZER 0x01 137 #define PCI_CLASS_SUB_CODE_INPUT_MOUSE 0x02 138 #define PCI_CLASS_SUB_CODE_INPUT_SCANNER 0x03 139 #define PCI_CLASS_SUB_CODE_INPUT_GAMEPORT 0x04 140 #define PCI_CLASS_SUB_CODE_INPUT_OTHER 0x80 141 #define PCI_CLASS_SUB_CODE_DOCKING_GENERIC 0x00 142 #define PCI_CLASS_SUB_CODE_DOCKING_OTHER 0x80 143 #define PCI_CLASS_SUB_CODE_PROCESSOR_386 0x00 144 #define PCI_CLASS_SUB_CODE_PROCESSOR_486 0x01 145 #define PCI_CLASS_SUB_CODE_PROCESSOR_PENTIUM 0x02 146 #define PCI_CLASS_SUB_CODE_PROCESSOR_ALPHA 0x10 147 #define PCI_CLASS_SUB_CODE_PROCESSOR_POWERPC 0x20 148 #define PCI_CLASS_SUB_CODE_PROCESSOR_MIPS 0x30 149 #define PCI_CLASS_SUB_CODE_PROCESSOR_COPROC 0x40 150 #define PCI_CLASS_SUB_CODE_SERIAL_1394 0x00 151 #define PCI_CLASS_SUB_CODE_SERIAL_ACCESSBUS 0x01 152 #define PCI_CLASS_SUB_CODE_SERIAL_SSA 0x02 153 #define PCI_CLASS_SUB_CODE_SERIAL_USB 0x03 154 #define PCI_CLASS_SUB_CODE_SERIAL_FIBRECHAN 0x04 155 #define PCI_CLASS_SUB_CODE_SERIAL_SMBUS 0x05 156 #define PCI_CLASS_SUB_CODE_SERIAL_INFINIBAND 0x06 157 #define PCI_CLASS_SUB_CODE_SERIAL_IPMI 0x07 158 #define PCI_CLASS_SUB_CODE_SERIAL_SERCOS 0x08 159 #define PCI_CLASS_SUB_CODE_SERIAL_CANBUS 0x09 160 #define PCI_CLASS_SUB_CODE_WIRELESS_IRDA 0x00 161 #define PCI_CLASS_SUB_CODE_WIRELESS_IR 0x01 162 #define PCI_CLASS_SUB_CODE_WIRELESS_RF 0x10 163 #define PCI_CLASS_SUB_CODE_WIRELESS_BLUETOOTH 0x11 164 #define PCI_CLASS_SUB_CODE_WIRELESS_BROADBAND 0x12 165 #define PCI_CLASS_SUB_CODE_WIRELESS_80211A 0x20 166 #define PCI_CLASS_SUB_CODE_WIRELESS_80211B 0x21 167 #define PCI_CLASS_SUB_CODE_WIRELESS_OTHER 0x80 168 #define PCI_CLASS_SUB_CODE_I2O_V1_0 0x00 169 #define PCI_CLASS_SUB_CODE_SATELLITE_TV 0x01 170 #define PCI_CLASS_SUB_CODE_SATELLITE_AUDIO 0x02 171 #define PCI_CLASS_SUB_CODE_SATELLITE_VOICE 0x03 172 #define PCI_CLASS_SUB_CODE_SATELLITE_DATA 0x04 173 #define PCI_CLASS_SUB_CODE_CRYPTO_NETWORK 0x00 174 #define PCI_CLASS_SUB_CODE_CRYPTO_ENTERTAINMENT 0x10 175 #define PCI_CLASS_SUB_CODE_CRYPTO_OTHER 0x80 176 #define PCI_CLASS_SUB_CODE_DATA_DPIO 0x00 177 #define PCI_CLASS_SUB_CODE_DATA_PERFCNTR 0x01 178 #define PCI_CLASS_SUB_CODE_DATA_COMMSYNC 0x10 179 #define PCI_CLASS_SUB_CODE_DATA_MGMT 0x20 180 #define PCI_CLASS_SUB_CODE_DATA_OTHER 0x80 181 182 #define PCI_CACHE_LINE_SIZE 0x0c /* 8 bits */ 183 #define PCI_LATENCY_TIMER 0x0d /* 8 bits */ 184 #define PCI_HEADER_TYPE 0x0e /* 8 bits */ 185 #define PCI_HEADER_TYPE_NORMAL 0 186 #define PCI_HEADER_TYPE_BRIDGE 1 187 #define PCI_HEADER_TYPE_CARDBUS 2 188 189 #define PCI_BIST 0x0f /* 8 bits */ 190 #define PCI_BIST_CODE_MASK 0x0f /* Return result */ 191 #define PCI_BIST_START 0x40 /* 1 to start BIST, 2 secs or less */ 192 #define PCI_BIST_CAPABLE 0x80 /* 1 if BIST capable */ 193 194 /* 195 * Base addresses specify locations in memory or I/O space. 196 * Decoded size can be determined by writing a value of 197 * 0xffffffff to the register, and reading it back. Only 198 * 1 bits are decoded. 199 */ 200 #define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */ 201 #define PCI_BASE_ADDRESS_1 0x14 /* 32 bits [htype 0,1 only] */ 202 #define PCI_BASE_ADDRESS_2 0x18 /* 32 bits [htype 0 only] */ 203 #define PCI_BASE_ADDRESS_3 0x1c /* 32 bits */ 204 #define PCI_BASE_ADDRESS_4 0x20 /* 32 bits */ 205 #define PCI_BASE_ADDRESS_5 0x24 /* 32 bits */ 206 #define PCI_BASE_ADDRESS_SPACE 0x01 /* 0 = memory, 1 = I/O */ 207 #define PCI_BASE_ADDRESS_SPACE_IO 0x01 208 #define PCI_BASE_ADDRESS_SPACE_MEMORY 0x00 209 #define PCI_BASE_ADDRESS_MEM_TYPE_MASK 0x06 210 #define PCI_BASE_ADDRESS_MEM_TYPE_32 0x00 /* 32 bit address */ 211 #define PCI_BASE_ADDRESS_MEM_TYPE_1M 0x02 /* Below 1M [obsolete] */ 212 #define PCI_BASE_ADDRESS_MEM_TYPE_64 0x04 /* 64 bit address */ 213 #define PCI_BASE_ADDRESS_MEM_PREFETCH 0x08 /* prefetchable? */ 214 #define PCI_BASE_ADDRESS_MEM_MASK (~0x0fULL) 215 #define PCI_BASE_ADDRESS_IO_MASK (~0x03ULL) 216 /* bit 1 is reserved if address_space = 1 */ 217 218 /* Header type 0 (normal devices) */ 219 #define PCI_CARDBUS_CIS 0x28 220 #define PCI_SUBSYSTEM_VENDOR_ID 0x2c 221 #define PCI_SUBSYSTEM_ID 0x2e 222 #define PCI_ROM_ADDRESS 0x30 /* Bits 31..11 are address, 10..1 reserved */ 223 #define PCI_ROM_ADDRESS_ENABLE 0x01 224 #define PCI_ROM_ADDRESS_MASK (~0x7ffULL) 225 226 #define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */ 227 228 /* 0x35-0x3b are reserved */ 229 #define PCI_INTERRUPT_LINE 0x3c /* 8 bits */ 230 #define PCI_INTERRUPT_PIN 0x3d /* 8 bits */ 231 #define PCI_MIN_GNT 0x3e /* 8 bits */ 232 #define PCI_MAX_LAT 0x3f /* 8 bits */ 233 234 #define PCI_INTERRUPT_LINE_DISABLE 0xff 235 236 /* Header type 1 (PCI-to-PCI bridges) */ 237 #define PCI_PRIMARY_BUS 0x18 /* Primary bus number */ 238 #define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */ 239 #define PCI_SUBORDINATE_BUS 0x1a /* Highest bus number behind the bridge */ 240 #define PCI_SEC_LATENCY_TIMER 0x1b /* Latency timer for secondary interface */ 241 #define PCI_IO_BASE 0x1c /* I/O range behind the bridge */ 242 #define PCI_IO_LIMIT 0x1d 243 #define PCI_IO_RANGE_TYPE_MASK 0x0f /* I/O bridging type */ 244 #define PCI_IO_RANGE_TYPE_16 0x00 245 #define PCI_IO_RANGE_TYPE_32 0x01 246 #define PCI_IO_RANGE_MASK ~0x0f 247 #define PCI_SEC_STATUS 0x1e /* Secondary status register, only bit 14 used */ 248 #define PCI_MEMORY_BASE 0x20 /* Memory range behind */ 249 #define PCI_MEMORY_LIMIT 0x22 250 #define PCI_MEMORY_RANGE_TYPE_MASK 0x0f 251 #define PCI_MEMORY_RANGE_MASK ~0x0f 252 #define PCI_PREF_MEMORY_BASE 0x24 /* Prefetchable memory range behind */ 253 #define PCI_PREF_MEMORY_LIMIT 0x26 254 #define PCI_PREF_RANGE_TYPE_MASK 0x0f 255 #define PCI_PREF_RANGE_TYPE_32 0x00 256 #define PCI_PREF_RANGE_TYPE_64 0x01 257 #define PCI_PREF_RANGE_MASK ~0x0f 258 #define PCI_PREF_BASE_UPPER32 0x28 /* Upper half of prefetchable memory range */ 259 #define PCI_PREF_LIMIT_UPPER32 0x2c 260 #define PCI_IO_BASE_UPPER16 0x30 /* Upper half of I/O addresses */ 261 #define PCI_IO_LIMIT_UPPER16 0x32 262 /* 0x34 same as for htype 0 */ 263 /* 0x35-0x3b is reserved */ 264 #define PCI_ROM_ADDRESS1 0x38 /* Same as PCI_ROM_ADDRESS, but for htype 1 */ 265 /* 0x3c-0x3d are same as for htype 0 */ 266 #define PCI_BRIDGE_CONTROL 0x3e 267 #define PCI_BRIDGE_CTL_PARITY 0x01 /* Enable parity detection on secondary interface */ 268 #define PCI_BRIDGE_CTL_SERR 0x02 /* The same for SERR forwarding */ 269 #define PCI_BRIDGE_CTL_NO_ISA 0x04 /* Disable bridging of ISA ports */ 270 #define PCI_BRIDGE_CTL_VGA 0x08 /* Forward VGA addresses */ 271 #define PCI_BRIDGE_CTL_MASTER_ABORT 0x20 /* Report master aborts */ 272 #define PCI_BRIDGE_CTL_BUS_RESET 0x40 /* Secondary bus reset */ 273 #define PCI_BRIDGE_CTL_FAST_BACK 0x80 /* Fast Back2Back enabled on secondary interface */ 274 275 /* From 440ep */ 276 #define PCI_ERREN 0x48 /* Error Enable */ 277 #define PCI_ERRSTS 0x49 /* Error Status */ 278 #define PCI_BRDGOPT1 0x4A /* PCI Bridge Options 1 */ 279 #define PCI_PLBSESR0 0x4C /* PCI PLB Slave Error Syndrome 0 */ 280 #define PCI_PLBSESR1 0x50 /* PCI PLB Slave Error Syndrome 1 */ 281 #define PCI_PLBSEAR 0x54 /* PCI PLB Slave Error Address */ 282 #define PCI_CAPID 0x58 /* Capability Identifier */ 283 #define PCI_NEXTITEMPTR 0x59 /* Next Item Pointer */ 284 #define PCI_PMC 0x5A /* Power Management Capabilities */ 285 #define PCI_PMCSR 0x5C /* Power Management Control Status */ 286 #define PCI_PMCSRBSE 0x5E /* PMCSR PCI to PCI Bridge Support Extensions */ 287 #define PCI_BRDGOPT2 0x60 /* PCI Bridge Options 2 */ 288 #define PCI_PMSCRR 0x64 /* Power Management State Change Request Re. */ 289 290 /* Header type 2 (CardBus bridges) */ 291 #define PCI_CB_CAPABILITY_LIST 0x14 292 /* 0x15 reserved */ 293 #define PCI_CB_SEC_STATUS 0x16 /* Secondary status */ 294 #define PCI_CB_PRIMARY_BUS 0x18 /* PCI bus number */ 295 #define PCI_CB_CARD_BUS 0x19 /* CardBus bus number */ 296 #define PCI_CB_SUBORDINATE_BUS 0x1a /* Subordinate bus number */ 297 #define PCI_CB_LATENCY_TIMER 0x1b /* CardBus latency timer */ 298 #define PCI_CB_MEMORY_BASE_0 0x1c 299 #define PCI_CB_MEMORY_LIMIT_0 0x20 300 #define PCI_CB_MEMORY_BASE_1 0x24 301 #define PCI_CB_MEMORY_LIMIT_1 0x28 302 #define PCI_CB_IO_BASE_0 0x2c 303 #define PCI_CB_IO_BASE_0_HI 0x2e 304 #define PCI_CB_IO_LIMIT_0 0x30 305 #define PCI_CB_IO_LIMIT_0_HI 0x32 306 #define PCI_CB_IO_BASE_1 0x34 307 #define PCI_CB_IO_BASE_1_HI 0x36 308 #define PCI_CB_IO_LIMIT_1 0x38 309 #define PCI_CB_IO_LIMIT_1_HI 0x3a 310 #define PCI_CB_IO_RANGE_MASK ~0x03 311 /* 0x3c-0x3d are same as for htype 0 */ 312 #define PCI_CB_BRIDGE_CONTROL 0x3e 313 #define PCI_CB_BRIDGE_CTL_PARITY 0x01 /* Similar to standard bridge control register */ 314 #define PCI_CB_BRIDGE_CTL_SERR 0x02 315 #define PCI_CB_BRIDGE_CTL_ISA 0x04 316 #define PCI_CB_BRIDGE_CTL_VGA 0x08 317 #define PCI_CB_BRIDGE_CTL_MASTER_ABORT 0x20 318 #define PCI_CB_BRIDGE_CTL_CB_RESET 0x40 /* CardBus reset */ 319 #define PCI_CB_BRIDGE_CTL_16BIT_INT 0x80 /* Enable interrupt for 16-bit cards */ 320 #define PCI_CB_BRIDGE_CTL_PREFETCH_MEM0 0x100 /* Prefetch enable for both memory regions */ 321 #define PCI_CB_BRIDGE_CTL_PREFETCH_MEM1 0x200 322 #define PCI_CB_BRIDGE_CTL_POST_WRITES 0x400 323 #define PCI_CB_SUBSYSTEM_VENDOR_ID 0x40 324 #define PCI_CB_SUBSYSTEM_ID 0x42 325 #define PCI_CB_LEGACY_MODE_BASE 0x44 /* 16-bit PC Card legacy mode base address (ExCa) */ 326 /* 0x48-0x7f reserved */ 327 328 /* Capability lists */ 329 330 #define PCI_CAP_LIST_ID 0 /* Capability ID */ 331 #define PCI_CAP_ID_PM 0x01 /* Power Management */ 332 #define PCI_CAP_ID_AGP 0x02 /* Accelerated Graphics Port */ 333 #define PCI_CAP_ID_VPD 0x03 /* Vital Product Data */ 334 #define PCI_CAP_ID_SLOTID 0x04 /* Slot Identification */ 335 #define PCI_CAP_ID_MSI 0x05 /* Message Signalled Interrupts */ 336 #define PCI_CAP_ID_CHSWP 0x06 /* CompactPCI HotSwap */ 337 #define PCI_CAP_ID_EXP 0x10 /* PCI Express */ 338 #define PCI_CAP_LIST_NEXT 1 /* Next capability in the list */ 339 #define PCI_CAP_FLAGS 2 /* Capability defined flags (16 bits) */ 340 #define PCI_CAP_SIZEOF 4 341 342 /* Power Management Registers */ 343 344 #define PCI_PM_CAP_VER_MASK 0x0007 /* Version */ 345 #define PCI_PM_CAP_PME_CLOCK 0x0008 /* PME clock required */ 346 #define PCI_PM_CAP_AUX_POWER 0x0010 /* Auxilliary power support */ 347 #define PCI_PM_CAP_DSI 0x0020 /* Device specific initialization */ 348 #define PCI_PM_CAP_D1 0x0200 /* D1 power state support */ 349 #define PCI_PM_CAP_D2 0x0400 /* D2 power state support */ 350 #define PCI_PM_CAP_PME 0x0800 /* PME pin supported */ 351 #define PCI_PM_CTRL 4 /* PM control and status register */ 352 #define PCI_PM_CTRL_STATE_MASK 0x0003 /* Current power state (D0 to D3) */ 353 #define PCI_PM_CTRL_PME_ENABLE 0x0100 /* PME pin enable */ 354 #define PCI_PM_CTRL_DATA_SEL_MASK 0x1e00 /* Data select (??) */ 355 #define PCI_PM_CTRL_DATA_SCALE_MASK 0x6000 /* Data scale (??) */ 356 #define PCI_PM_CTRL_PME_STATUS 0x8000 /* PME pin status */ 357 #define PCI_PM_PPB_EXTENSIONS 6 /* PPB support extensions (??) */ 358 #define PCI_PM_PPB_B2_B3 0x40 /* Stop clock when in D3hot (??) */ 359 #define PCI_PM_BPCC_ENABLE 0x80 /* Bus power/clock control enable (??) */ 360 #define PCI_PM_DATA_REGISTER 7 /* (??) */ 361 #define PCI_PM_SIZEOF 8 362 363 /* AGP registers */ 364 365 #define PCI_AGP_VERSION 2 /* BCD version number */ 366 #define PCI_AGP_RFU 3 /* Rest of capability flags */ 367 #define PCI_AGP_STATUS 4 /* Status register */ 368 #define PCI_AGP_STATUS_RQ_MASK 0xff000000 /* Maximum number of requests - 1 */ 369 #define PCI_AGP_STATUS_SBA 0x0200 /* Sideband addressing supported */ 370 #define PCI_AGP_STATUS_64BIT 0x0020 /* 64-bit addressing supported */ 371 #define PCI_AGP_STATUS_FW 0x0010 /* FW transfers supported */ 372 #define PCI_AGP_STATUS_RATE4 0x0004 /* 4x transfer rate supported */ 373 #define PCI_AGP_STATUS_RATE2 0x0002 /* 2x transfer rate supported */ 374 #define PCI_AGP_STATUS_RATE1 0x0001 /* 1x transfer rate supported */ 375 #define PCI_AGP_COMMAND 8 /* Control register */ 376 #define PCI_AGP_COMMAND_RQ_MASK 0xff000000 /* Master: Maximum number of requests */ 377 #define PCI_AGP_COMMAND_SBA 0x0200 /* Sideband addressing enabled */ 378 #define PCI_AGP_COMMAND_AGP 0x0100 /* Allow processing of AGP transactions */ 379 #define PCI_AGP_COMMAND_64BIT 0x0020 /* Allow processing of 64-bit addresses */ 380 #define PCI_AGP_COMMAND_FW 0x0010 /* Force FW transfers */ 381 #define PCI_AGP_COMMAND_RATE4 0x0004 /* Use 4x rate */ 382 #define PCI_AGP_COMMAND_RATE2 0x0002 /* Use 4x rate */ 383 #define PCI_AGP_COMMAND_RATE1 0x0001 /* Use 4x rate */ 384 #define PCI_AGP_SIZEOF 12 385 386 /* PCI-X registers */ 387 388 #define PCI_X_CMD_DPERR_E 0x0001 /* Data Parity Error Recovery Enable */ 389 #define PCI_X_CMD_ERO 0x0002 /* Enable Relaxed Ordering */ 390 #define PCI_X_CMD_MAX_READ 0x0000 /* Max Memory Read Byte Count */ 391 #define PCI_X_CMD_MAX_SPLIT 0x0030 /* Max Outstanding Split Transactions */ 392 #define PCI_X_CMD_VERSION(x) (((x) >> 12) & 3) /* Version */ 393 394 395 /* Slot Identification */ 396 397 #define PCI_SID_ESR 2 /* Expansion Slot Register */ 398 #define PCI_SID_ESR_NSLOTS 0x1f /* Number of expansion slots available */ 399 #define PCI_SID_ESR_FIC 0x20 /* First In Chassis Flag */ 400 #define PCI_SID_CHASSIS_NR 3 /* Chassis Number */ 401 402 /* Message Signalled Interrupts registers */ 403 404 #define PCI_MSI_FLAGS 2 /* Various flags */ 405 #define PCI_MSI_FLAGS_64BIT 0x80 /* 64-bit addresses allowed */ 406 #define PCI_MSI_FLAGS_QSIZE 0x70 /* Message queue size configured */ 407 #define PCI_MSI_FLAGS_QMASK 0x0e /* Maximum queue size available */ 408 #define PCI_MSI_FLAGS_ENABLE 0x01 /* MSI feature enabled */ 409 #define PCI_MSI_RFU 3 /* Rest of capability flags */ 410 #define PCI_MSI_ADDRESS_LO 4 /* Lower 32 bits */ 411 #define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */ 412 #define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */ 413 #define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */ 414 415 #define PCI_MAX_PCI_DEVICES 32 416 #define PCI_MAX_PCI_FUNCTIONS 8 417 418 #define PCI_FIND_CAP_TTL 0x48 419 #define CAP_START_POS 0x40 420 421 /* Extended Capabilities (PCI-X 2.0 and Express) */ 422 #define PCI_EXT_CAP_ID(header) (header & 0x0000ffff) 423 #define PCI_EXT_CAP_VER(header) ((header >> 16) & 0xf) 424 #define PCI_EXT_CAP_NEXT(header) ((header >> 20) & 0xffc) 425 426 #define PCI_EXT_CAP_ID_ERR 0x01 /* Advanced Error Reporting */ 427 #define PCI_EXT_CAP_ID_VC 0x02 /* Virtual Channel Capability */ 428 #define PCI_EXT_CAP_ID_DSN 0x03 /* Device Serial Number */ 429 #define PCI_EXT_CAP_ID_PWR 0x04 /* Power Budgeting */ 430 #define PCI_EXT_CAP_ID_RCLD 0x05 /* Root Complex Link Declaration */ 431 #define PCI_EXT_CAP_ID_RCILC 0x06 /* Root Complex Internal Link Control */ 432 #define PCI_EXT_CAP_ID_RCEC 0x07 /* Root Complex Event Collector */ 433 #define PCI_EXT_CAP_ID_MFVC 0x08 /* Multi-Function VC Capability */ 434 #define PCI_EXT_CAP_ID_VC9 0x09 /* same as _VC */ 435 #define PCI_EXT_CAP_ID_RCRB 0x0A /* Root Complex RB? */ 436 #define PCI_EXT_CAP_ID_VNDR 0x0B /* Vendor-Specific */ 437 #define PCI_EXT_CAP_ID_CAC 0x0C /* Config Access - obsolete */ 438 #define PCI_EXT_CAP_ID_ACS 0x0D /* Access Control Services */ 439 #define PCI_EXT_CAP_ID_ARI 0x0E /* Alternate Routing ID */ 440 #define PCI_EXT_CAP_ID_ATS 0x0F /* Address Translation Services */ 441 #define PCI_EXT_CAP_ID_SRIOV 0x10 /* Single Root I/O Virtualization */ 442 #define PCI_EXT_CAP_ID_MRIOV 0x11 /* Multi Root I/O Virtualization */ 443 #define PCI_EXT_CAP_ID_MCAST 0x12 /* Multicast */ 444 #define PCI_EXT_CAP_ID_PRI 0x13 /* Page Request Interface */ 445 #define PCI_EXT_CAP_ID_AMD_XXX 0x14 /* Reserved for AMD */ 446 #define PCI_EXT_CAP_ID_REBAR 0x15 /* Resizable BAR */ 447 #define PCI_EXT_CAP_ID_DPA 0x16 /* Dynamic Power Allocation */ 448 #define PCI_EXT_CAP_ID_TPH 0x17 /* TPH Requester */ 449 #define PCI_EXT_CAP_ID_LTR 0x18 /* Latency Tolerance Reporting */ 450 #define PCI_EXT_CAP_ID_SECPCI 0x19 /* Secondary PCIe Capability */ 451 #define PCI_EXT_CAP_ID_PMUX 0x1A /* Protocol Multiplexing */ 452 #define PCI_EXT_CAP_ID_PASID 0x1B /* Process Address Space ID */ 453 454 /* Include the ID list */ 455 456 #include <pci_ids.h> 457 458 #ifndef __ASSEMBLY__ 459 460 #ifdef CONFIG_SYS_PCI_64BIT 461 typedef u64 pci_addr_t; 462 typedef u64 pci_size_t; 463 #else 464 typedef u32 pci_addr_t; 465 typedef u32 pci_size_t; 466 #endif 467 468 struct pci_region { 469 pci_addr_t bus_start; /* Start on the bus */ 470 phys_addr_t phys_start; /* Start in physical address space */ 471 pci_size_t size; /* Size */ 472 unsigned long flags; /* Resource flags */ 473 474 pci_addr_t bus_lower; 475 }; 476 477 #define PCI_REGION_MEM 0x00000000 /* PCI memory space */ 478 #define PCI_REGION_IO 0x00000001 /* PCI IO space */ 479 #define PCI_REGION_TYPE 0x00000001 480 #define PCI_REGION_PREFETCH 0x00000008 /* prefetchable PCI memory */ 481 482 #define PCI_REGION_SYS_MEMORY 0x00000100 /* System memory */ 483 #define PCI_REGION_RO 0x00000200 /* Read-only memory */ 484 485 static inline void pci_set_region(struct pci_region *reg, 486 pci_addr_t bus_start, 487 phys_addr_t phys_start, 488 pci_size_t size, 489 unsigned long flags) { 490 reg->bus_start = bus_start; 491 reg->phys_start = phys_start; 492 reg->size = size; 493 reg->flags = flags; 494 } 495 496 typedef int pci_dev_t; 497 498 #define PCI_BUS(d) (((d) >> 16) & 0xff) 499 #define PCI_DEV(d) (((d) >> 11) & 0x1f) 500 #define PCI_FUNC(d) (((d) >> 8) & 0x7) 501 #define PCI_DEVFN(d, f) ((d) << 11 | (f) << 8) 502 #define PCI_MASK_BUS(bdf) ((bdf) & 0xffff) 503 #define PCI_ADD_BUS(bus, devfn) (((bus) << 16) | (devfn)) 504 #define PCI_BDF(b, d, f) ((b) << 16 | PCI_DEVFN(d, f)) 505 #define PCI_VENDEV(v, d) (((v) << 16) | (d)) 506 #define PCI_ANY_ID (~0) 507 508 struct pci_device_id { 509 unsigned int vendor, device; /* Vendor and device ID or PCI_ANY_ID */ 510 unsigned int subvendor, subdevice; /* Subsystem ID's or PCI_ANY_ID */ 511 unsigned int class, class_mask; /* (class,subclass,prog-if) triplet */ 512 unsigned long driver_data; /* Data private to the driver */ 513 }; 514 515 struct pci_controller; 516 517 struct pci_config_table { 518 unsigned int vendor, device; /* Vendor and device ID or PCI_ANY_ID */ 519 unsigned int class; /* Class ID, or PCI_ANY_ID */ 520 unsigned int bus; /* Bus number, or PCI_ANY_ID */ 521 unsigned int dev; /* Device number, or PCI_ANY_ID */ 522 unsigned int func; /* Function number, or PCI_ANY_ID */ 523 524 void (*config_device)(struct pci_controller* hose, pci_dev_t dev, 525 struct pci_config_table *); 526 unsigned long priv[3]; 527 }; 528 529 extern void pci_cfgfunc_do_nothing(struct pci_controller* hose, pci_dev_t dev, 530 struct pci_config_table *); 531 extern void pci_cfgfunc_config_device(struct pci_controller* hose, pci_dev_t dev, 532 struct pci_config_table *); 533 534 #define MAX_PCI_REGIONS 7 535 536 #define INDIRECT_TYPE_NO_PCIE_LINK 1 537 538 /* 539 * Structure of a PCI controller (host bridge) 540 * 541 * With driver model this is dev_get_uclass_priv(bus) 542 */ 543 struct pci_controller { 544 #ifdef CONFIG_DM_PCI 545 struct udevice *bus; 546 struct udevice *ctlr; 547 #else 548 struct pci_controller *next; 549 #endif 550 551 int first_busno; 552 int last_busno; 553 554 volatile unsigned int *cfg_addr; 555 volatile unsigned char *cfg_data; 556 557 int indirect_type; 558 559 /* 560 * TODO(sjg@chromium.org): With driver model we use struct 561 * pci_controller for both the controller and any bridge devices 562 * attached to it. But there is only one region list and it is in the 563 * top-level controller. 564 * 565 * This could be changed so that struct pci_controller is only used 566 * for PCI controllers and a separate UCLASS (or perhaps 567 * UCLASS_PCI_GENERIC) is used for bridges. 568 */ 569 struct pci_region regions[MAX_PCI_REGIONS]; 570 int region_count; 571 572 struct pci_config_table *config_table; 573 574 void (*fixup_irq)(struct pci_controller *, pci_dev_t); 575 #ifndef CONFIG_DM_PCI 576 /* Low-level architecture-dependent routines */ 577 int (*read_byte)(struct pci_controller*, pci_dev_t, int where, u8 *); 578 int (*read_word)(struct pci_controller*, pci_dev_t, int where, u16 *); 579 int (*read_dword)(struct pci_controller*, pci_dev_t, int where, u32 *); 580 int (*write_byte)(struct pci_controller*, pci_dev_t, int where, u8); 581 int (*write_word)(struct pci_controller*, pci_dev_t, int where, u16); 582 int (*write_dword)(struct pci_controller*, pci_dev_t, int where, u32); 583 #endif 584 585 /* Used by auto config */ 586 struct pci_region *pci_mem, *pci_io, *pci_prefetch; 587 588 /* Used by ppc405 autoconfig*/ 589 struct pci_region *pci_fb; 590 #ifndef CONFIG_DM_PCI 591 int current_busno; 592 593 void *priv_data; 594 #endif 595 }; 596 597 #ifndef CONFIG_DM_PCI 598 static inline void pci_set_ops(struct pci_controller *hose, 599 int (*read_byte)(struct pci_controller*, 600 pci_dev_t, int where, u8 *), 601 int (*read_word)(struct pci_controller*, 602 pci_dev_t, int where, u16 *), 603 int (*read_dword)(struct pci_controller*, 604 pci_dev_t, int where, u32 *), 605 int (*write_byte)(struct pci_controller*, 606 pci_dev_t, int where, u8), 607 int (*write_word)(struct pci_controller*, 608 pci_dev_t, int where, u16), 609 int (*write_dword)(struct pci_controller*, 610 pci_dev_t, int where, u32)) { 611 hose->read_byte = read_byte; 612 hose->read_word = read_word; 613 hose->read_dword = read_dword; 614 hose->write_byte = write_byte; 615 hose->write_word = write_word; 616 hose->write_dword = write_dword; 617 } 618 #endif 619 620 #ifdef CONFIG_PCI_INDIRECT_BRIDGE 621 extern void pci_setup_indirect(struct pci_controller* hose, u32 cfg_addr, u32 cfg_data); 622 #endif 623 624 #if !defined(CONFIG_DM_PCI) || defined(CONFIG_DM_PCI_COMPAT) 625 extern phys_addr_t pci_hose_bus_to_phys(struct pci_controller* hose, 626 pci_addr_t addr, unsigned long flags); 627 extern pci_addr_t pci_hose_phys_to_bus(struct pci_controller* hose, 628 phys_addr_t addr, unsigned long flags); 629 630 #define pci_phys_to_bus(dev, addr, flags) \ 631 pci_hose_phys_to_bus(pci_bus_to_hose(PCI_BUS(dev)), (addr), (flags)) 632 #define pci_bus_to_phys(dev, addr, flags) \ 633 pci_hose_bus_to_phys(pci_bus_to_hose(PCI_BUS(dev)), (addr), (flags)) 634 635 #define pci_virt_to_bus(dev, addr, flags) \ 636 pci_hose_phys_to_bus(pci_bus_to_hose(PCI_BUS(dev)), \ 637 (virt_to_phys(addr)), (flags)) 638 #define pci_bus_to_virt(dev, addr, flags, len, map_flags) \ 639 map_physmem(pci_hose_bus_to_phys(pci_bus_to_hose(PCI_BUS(dev)), \ 640 (addr), (flags)), \ 641 (len), (map_flags)) 642 643 #define pci_phys_to_mem(dev, addr) \ 644 pci_phys_to_bus((dev), (addr), PCI_REGION_MEM) 645 #define pci_mem_to_phys(dev, addr) \ 646 pci_bus_to_phys((dev), (addr), PCI_REGION_MEM) 647 #define pci_phys_to_io(dev, addr) pci_phys_to_bus((dev), (addr), PCI_REGION_IO) 648 #define pci_io_to_phys(dev, addr) pci_bus_to_phys((dev), (addr), PCI_REGION_IO) 649 650 #define pci_virt_to_mem(dev, addr) \ 651 pci_virt_to_bus((dev), (addr), PCI_REGION_MEM) 652 #define pci_mem_to_virt(dev, addr, len, map_flags) \ 653 pci_bus_to_virt((dev), (addr), PCI_REGION_MEM, (len), (map_flags)) 654 #define pci_virt_to_io(dev, addr) \ 655 pci_virt_to_bus((dev), (addr), PCI_REGION_IO) 656 #define pci_io_to_virt(dev, addr, len, map_flags) \ 657 pci_bus_to_virt((dev), (addr), PCI_REGION_IO, (len), (map_flags)) 658 659 /* For driver model these are defined in macros in pci_compat.c */ 660 extern int pci_hose_read_config_byte(struct pci_controller *hose, 661 pci_dev_t dev, int where, u8 *val); 662 extern int pci_hose_read_config_word(struct pci_controller *hose, 663 pci_dev_t dev, int where, u16 *val); 664 extern int pci_hose_read_config_dword(struct pci_controller *hose, 665 pci_dev_t dev, int where, u32 *val); 666 extern int pci_hose_write_config_byte(struct pci_controller *hose, 667 pci_dev_t dev, int where, u8 val); 668 extern int pci_hose_write_config_word(struct pci_controller *hose, 669 pci_dev_t dev, int where, u16 val); 670 extern int pci_hose_write_config_dword(struct pci_controller *hose, 671 pci_dev_t dev, int where, u32 val); 672 #endif 673 674 #ifndef CONFIG_DM_PCI 675 extern int pci_read_config_byte(pci_dev_t dev, int where, u8 *val); 676 extern int pci_read_config_word(pci_dev_t dev, int where, u16 *val); 677 extern int pci_read_config_dword(pci_dev_t dev, int where, u32 *val); 678 extern int pci_write_config_byte(pci_dev_t dev, int where, u8 val); 679 extern int pci_write_config_word(pci_dev_t dev, int where, u16 val); 680 extern int pci_write_config_dword(pci_dev_t dev, int where, u32 val); 681 #endif 682 683 void pciauto_region_init(struct pci_region *res); 684 void pciauto_region_align(struct pci_region *res, pci_size_t size); 685 void pciauto_config_init(struct pci_controller *hose); 686 int pciauto_region_allocate(struct pci_region *res, pci_size_t size, 687 pci_addr_t *bar); 688 689 #if !defined(CONFIG_DM_PCI) || defined(CONFIG_DM_PCI_COMPAT) 690 extern int pci_hose_read_config_byte_via_dword(struct pci_controller *hose, 691 pci_dev_t dev, int where, u8 *val); 692 extern int pci_hose_read_config_word_via_dword(struct pci_controller *hose, 693 pci_dev_t dev, int where, u16 *val); 694 extern int pci_hose_write_config_byte_via_dword(struct pci_controller *hose, 695 pci_dev_t dev, int where, u8 val); 696 extern int pci_hose_write_config_word_via_dword(struct pci_controller *hose, 697 pci_dev_t dev, int where, u16 val); 698 699 extern void *pci_map_bar(pci_dev_t pdev, int bar, int flags); 700 extern void pci_register_hose(struct pci_controller* hose); 701 extern struct pci_controller* pci_bus_to_hose(int bus); 702 extern struct pci_controller *find_hose_by_cfg_addr(void *cfg_addr); 703 extern struct pci_controller *pci_get_hose_head(void); 704 705 extern int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev); 706 extern int pci_hose_scan(struct pci_controller *hose); 707 extern int pci_hose_scan_bus(struct pci_controller *hose, int bus); 708 709 extern void pciauto_setup_device(struct pci_controller *hose, 710 pci_dev_t dev, int bars_num, 711 struct pci_region *mem, 712 struct pci_region *prefetch, 713 struct pci_region *io); 714 extern void pciauto_prescan_setup_bridge(struct pci_controller *hose, 715 pci_dev_t dev, int sub_bus); 716 extern void pciauto_postscan_setup_bridge(struct pci_controller *hose, 717 pci_dev_t dev, int sub_bus); 718 extern int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev); 719 720 extern pci_dev_t pci_find_device (unsigned int vendor, unsigned int device, int index); 721 extern pci_dev_t pci_find_devices (struct pci_device_id *ids, int index); 722 pci_dev_t pci_find_class(unsigned int find_class, int index); 723 724 extern int pci_hose_config_device(struct pci_controller *hose, 725 pci_dev_t dev, 726 unsigned long io, 727 pci_addr_t mem, 728 unsigned long command); 729 730 extern int pci_hose_find_capability(struct pci_controller *hose, pci_dev_t dev, 731 int cap); 732 extern int pci_hose_find_cap_start(struct pci_controller *hose, pci_dev_t dev, 733 u8 hdr_type); 734 extern int pci_find_cap(struct pci_controller *hose, pci_dev_t dev, int pos, 735 int cap); 736 737 int pci_find_next_ext_capability(struct pci_controller *hose, 738 pci_dev_t dev, int start, int cap); 739 int pci_hose_find_ext_capability(struct pci_controller *hose, 740 pci_dev_t dev, int cap); 741 742 #ifdef CONFIG_PCI_FIXUP_DEV 743 extern void board_pci_fixup_dev(struct pci_controller *hose, pci_dev_t dev, 744 unsigned short vendor, 745 unsigned short device, 746 unsigned short class); 747 #endif 748 #endif /* !defined(CONFIG_DM_PCI) || defined(CONFIG_DM_PCI_COMPAT) */ 749 750 const char * pci_class_str(u8 class); 751 int pci_last_busno(void); 752 753 #ifdef CONFIG_MPC85xx 754 extern void pci_mpc85xx_init (struct pci_controller *hose); 755 #endif 756 757 #ifdef CONFIG_PCIE_IMX 758 extern void imx_pcie_remove(void); 759 #endif 760 761 #if !defined(CONFIG_DM_PCI) || defined(CONFIG_DM_PCI_COMPAT) 762 /** 763 * pci_write_bar32() - Write the address of a BAR including control bits 764 * 765 * This writes a raw address (with control bits) to a bar. This can be used 766 * with devices which require hard-coded addresses, not part of the normal 767 * PCI enumeration process. 768 * 769 * @hose: PCI hose to use 770 * @dev: PCI device to update 771 * @barnum: BAR number (0-5) 772 * @addr: BAR address with control bits 773 */ 774 void pci_write_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum, 775 u32 addr); 776 777 /** 778 * pci_read_bar32() - read the address of a bar 779 * 780 * @hose: PCI hose to use 781 * @dev: PCI device to inspect 782 * @barnum: BAR number (0-5) 783 * @return address of the bar, masking out any control bits 784 * */ 785 u32 pci_read_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum); 786 787 /** 788 * pci_hose_find_devices() - Find devices by vendor/device ID 789 * 790 * @hose: PCI hose to search 791 * @busnum: Bus number to search 792 * @ids: PCI vendor/device IDs to look for, terminated by 0, 0 record 793 * @indexp: Pointer to device index to find. To find the first matching 794 * device, pass 0; to find the second, pass 1, etc. This 795 * parameter is decremented for each non-matching device so 796 * can be called repeatedly. 797 */ 798 pci_dev_t pci_hose_find_devices(struct pci_controller *hose, int busnum, 799 struct pci_device_id *ids, int *indexp); 800 #endif /* !CONFIG_DM_PCI || CONFIG_DM_PCI_COMPAT */ 801 802 /* Access sizes for PCI reads and writes */ 803 enum pci_size_t { 804 PCI_SIZE_8, 805 PCI_SIZE_16, 806 PCI_SIZE_32, 807 }; 808 809 struct udevice; 810 811 #ifdef CONFIG_DM_PCI 812 /** 813 * struct pci_child_platdata - information stored about each PCI device 814 * 815 * Every device on a PCI bus has this per-child data. 816 * 817 * It can be accessed using dev_get_parent_priv(dev) if dev->parent is a 818 * PCI bus (i.e. UCLASS_PCI) 819 * 820 * @devfn: Encoded device and function index - see PCI_DEVFN() 821 * @vendor: PCI vendor ID (see pci_ids.h) 822 * @device: PCI device ID (see pci_ids.h) 823 * @class: PCI class, 3 bytes: (base, sub, prog-if) 824 */ 825 struct pci_child_platdata { 826 int devfn; 827 unsigned short vendor; 828 unsigned short device; 829 unsigned int class; 830 }; 831 832 /* PCI bus operations */ 833 struct dm_pci_ops { 834 /** 835 * read_config() - Read a PCI configuration value 836 * 837 * PCI buses must support reading and writing configuration values 838 * so that the bus can be scanned and its devices configured. 839 * 840 * Normally PCI_BUS(@bdf) is the same as @bus->seq, but not always. 841 * If bridges exist it is possible to use the top-level bus to 842 * access a sub-bus. In that case @bus will be the top-level bus 843 * and PCI_BUS(bdf) will be a different (higher) value 844 * 845 * @bus: Bus to read from 846 * @bdf: Bus, device and function to read 847 * @offset: Byte offset within the device's configuration space 848 * @valuep: Place to put the returned value 849 * @size: Access size 850 * @return 0 if OK, -ve on error 851 */ 852 int (*read_config)(struct udevice *bus, pci_dev_t bdf, uint offset, 853 ulong *valuep, enum pci_size_t size); 854 /** 855 * write_config() - Write a PCI configuration value 856 * 857 * @bus: Bus to write to 858 * @bdf: Bus, device and function to write 859 * @offset: Byte offset within the device's configuration space 860 * @value: Value to write 861 * @size: Access size 862 * @return 0 if OK, -ve on error 863 */ 864 int (*write_config)(struct udevice *bus, pci_dev_t bdf, uint offset, 865 ulong value, enum pci_size_t size); 866 }; 867 868 /* Get access to a PCI bus' operations */ 869 #define pci_get_ops(dev) ((struct dm_pci_ops *)(dev)->driver->ops) 870 871 /** 872 * dm_pci_get_bdf() - Get the BDF value for a device 873 * 874 * @dev: Device to check 875 * @return bus/device/function value (see PCI_BDF()) 876 */ 877 pci_dev_t dm_pci_get_bdf(struct udevice *dev); 878 879 /** 880 * pci_bind_bus_devices() - scan a PCI bus and bind devices 881 * 882 * Scan a PCI bus looking for devices. Bind each one that is found. If 883 * devices are already bound that match the scanned devices, just update the 884 * child data so that the device can be used correctly (this happens when 885 * the device tree describes devices we expect to see on the bus). 886 * 887 * Devices that are bound in this way will use a generic PCI driver which 888 * does nothing. The device can still be accessed but will not provide any 889 * driver interface. 890 * 891 * @bus: Bus containing devices to bind 892 * @return 0 if OK, -ve on error 893 */ 894 int pci_bind_bus_devices(struct udevice *bus); 895 896 /** 897 * pci_auto_config_devices() - configure bus devices ready for use 898 * 899 * This works through all devices on a bus by scanning the driver model 900 * data structures (normally these have been set up by pci_bind_bus_devices() 901 * earlier). 902 * 903 * Space is allocated for each PCI base address register (BAR) so that the 904 * devices are mapped into memory and I/O space ready for use. 905 * 906 * @bus: Bus containing devices to bind 907 * @return 0 if OK, -ve on error 908 */ 909 int pci_auto_config_devices(struct udevice *bus); 910 911 /** 912 * dm_pci_bus_find_bdf() - Find a device given its PCI bus address 913 * 914 * @bdf: PCI device address: bus, device and function -see PCI_BDF() 915 * @devp: Returns the device for this address, if found 916 * @return 0 if OK, -ENODEV if not found 917 */ 918 int dm_pci_bus_find_bdf(pci_dev_t bdf, struct udevice **devp); 919 920 /** 921 * pci_bus_find_devfn() - Find a device on a bus 922 * 923 * @find_devfn: PCI device address (device and function only) 924 * @devp: Returns the device for this address, if found 925 * @return 0 if OK, -ENODEV if not found 926 */ 927 int pci_bus_find_devfn(struct udevice *bus, pci_dev_t find_devfn, 928 struct udevice **devp); 929 930 /** 931 * pci_find_first_device() - return the first available PCI device 932 * 933 * This function and pci_find_first_device() allow iteration through all 934 * available PCI devices on all buses. Assuming there are any, this will 935 * return the first one. 936 * 937 * @devp: Set to the first available device, or NULL if no more are left 938 * or we got an error 939 * @return 0 if all is OK, -ve on error (e.g. a bus/bridge failed to probe) 940 */ 941 int pci_find_first_device(struct udevice **devp); 942 943 /** 944 * pci_find_next_device() - return the next available PCI device 945 * 946 * Finds the next available PCI device after the one supplied, or sets @devp 947 * to NULL if there are no more. 948 * 949 * @devp: On entry, the last device returned. Set to the next available 950 * device, or NULL if no more are left or we got an error 951 * @return 0 if all is OK, -ve on error (e.g. a bus/bridge failed to probe) 952 */ 953 int pci_find_next_device(struct udevice **devp); 954 955 /** 956 * pci_get_ff() - Returns a mask for the given access size 957 * 958 * @size: Access size 959 * @return 0xff for PCI_SIZE_8, 0xffff for PCI_SIZE_16, 0xffffffff for 960 * PCI_SIZE_32 961 */ 962 int pci_get_ff(enum pci_size_t size); 963 964 /** 965 * pci_bus_find_devices () - Find devices on a bus 966 * 967 * @bus: Bus to search 968 * @ids: PCI vendor/device IDs to look for, terminated by 0, 0 record 969 * @indexp: Pointer to device index to find. To find the first matching 970 * device, pass 0; to find the second, pass 1, etc. This 971 * parameter is decremented for each non-matching device so 972 * can be called repeatedly. 973 * @devp: Returns matching device if found 974 * @return 0 if found, -ENODEV if not 975 */ 976 int pci_bus_find_devices(struct udevice *bus, struct pci_device_id *ids, 977 int *indexp, struct udevice **devp); 978 979 /** 980 * pci_find_device_id() - Find a device on any bus 981 * 982 * @ids: PCI vendor/device IDs to look for, terminated by 0, 0 record 983 * @index: Index number of device to find, 0 for the first match, 1 for 984 * the second, etc. 985 * @devp: Returns matching device if found 986 * @return 0 if found, -ENODEV if not 987 */ 988 int pci_find_device_id(struct pci_device_id *ids, int index, 989 struct udevice **devp); 990 991 /** 992 * dm_pci_hose_probe_bus() - probe a subordinate bus, scanning it for devices 993 * 994 * This probes the given bus which causes it to be scanned for devices. The 995 * devices will be bound but not probed. 996 * 997 * @hose specifies the PCI hose that will be used for the scan. This is 998 * always a top-level bus with uclass UCLASS_PCI. The bus to scan is 999 * in @bdf, and is a subordinate bus reachable from @hose. 1000 * 1001 * @hose: PCI hose to scan 1002 * @bdf: PCI bus address to scan (PCI_BUS(bdf) is the bus number) 1003 * @return 0 if OK, -ve on error 1004 */ 1005 int dm_pci_hose_probe_bus(struct udevice *bus); 1006 1007 /** 1008 * pci_bus_read_config() - Read a configuration value from a device 1009 * 1010 * TODO(sjg@chromium.org): We should be able to pass just a device and have 1011 * it do the right thing. It would be good to have that function also. 1012 * 1013 * @bus: Bus to read from 1014 * @bdf: PCI device address: bus, device and function -see PCI_BDF() 1015 * @offset: Register offset to read 1016 * @valuep: Place to put the returned value 1017 * @size: Access size 1018 * @return 0 if OK, -ve on error 1019 */ 1020 int pci_bus_read_config(struct udevice *bus, pci_dev_t bdf, int offset, 1021 unsigned long *valuep, enum pci_size_t size); 1022 1023 /** 1024 * pci_bus_write_config() - Write a configuration value to a device 1025 * 1026 * @bus: Bus to write from 1027 * @bdf: PCI device address: bus, device and function -see PCI_BDF() 1028 * @offset: Register offset to write 1029 * @value: Value to write 1030 * @size: Access size 1031 * @return 0 if OK, -ve on error 1032 */ 1033 int pci_bus_write_config(struct udevice *bus, pci_dev_t bdf, int offset, 1034 unsigned long value, enum pci_size_t size); 1035 1036 /** 1037 * pci_bus_clrset_config32() - Update a configuration value for a device 1038 * 1039 * The register at @offset is updated to (oldvalue & ~clr) | set. 1040 * 1041 * @bus: Bus to access 1042 * @bdf: PCI device address: bus, device and function -see PCI_BDF() 1043 * @offset: Register offset to update 1044 * @clr: Bits to clear 1045 * @set: Bits to set 1046 * @return 0 if OK, -ve on error 1047 */ 1048 int pci_bus_clrset_config32(struct udevice *bus, pci_dev_t bdf, int offset, 1049 u32 clr, u32 set); 1050 1051 /** 1052 * Driver model PCI config access functions. Use these in preference to others 1053 * when you have a valid device 1054 */ 1055 int dm_pci_read_config(struct udevice *dev, int offset, unsigned long *valuep, 1056 enum pci_size_t size); 1057 1058 int dm_pci_read_config8(struct udevice *dev, int offset, u8 *valuep); 1059 int dm_pci_read_config16(struct udevice *dev, int offset, u16 *valuep); 1060 int dm_pci_read_config32(struct udevice *dev, int offset, u32 *valuep); 1061 1062 int dm_pci_write_config(struct udevice *dev, int offset, unsigned long value, 1063 enum pci_size_t size); 1064 1065 int dm_pci_write_config8(struct udevice *dev, int offset, u8 value); 1066 int dm_pci_write_config16(struct udevice *dev, int offset, u16 value); 1067 int dm_pci_write_config32(struct udevice *dev, int offset, u32 value); 1068 1069 /** 1070 * These permit convenient read/modify/write on PCI configuration. The 1071 * register is updated to (oldvalue & ~clr) | set. 1072 */ 1073 int dm_pci_clrset_config8(struct udevice *dev, int offset, u32 clr, u32 set); 1074 int dm_pci_clrset_config16(struct udevice *dev, int offset, u32 clr, u32 set); 1075 int dm_pci_clrset_config32(struct udevice *dev, int offset, u32 clr, u32 set); 1076 1077 /* 1078 * The following functions provide access to the above without needing the 1079 * size parameter. We are trying to encourage the use of the 8/16/32-style 1080 * functions, rather than byte/word/dword. But both are supported. 1081 */ 1082 int pci_write_config32(pci_dev_t pcidev, int offset, u32 value); 1083 int pci_write_config16(pci_dev_t pcidev, int offset, u16 value); 1084 int pci_write_config8(pci_dev_t pcidev, int offset, u8 value); 1085 int pci_read_config32(pci_dev_t pcidev, int offset, u32 *valuep); 1086 int pci_read_config16(pci_dev_t pcidev, int offset, u16 *valuep); 1087 int pci_read_config8(pci_dev_t pcidev, int offset, u8 *valuep); 1088 1089 #ifdef CONFIG_DM_PCI_COMPAT 1090 /* Compatibility with old naming */ 1091 static inline int pci_write_config_dword(pci_dev_t pcidev, int offset, 1092 u32 value) 1093 { 1094 return pci_write_config32(pcidev, offset, value); 1095 } 1096 1097 /* Compatibility with old naming */ 1098 static inline int pci_write_config_word(pci_dev_t pcidev, int offset, 1099 u16 value) 1100 { 1101 return pci_write_config16(pcidev, offset, value); 1102 } 1103 1104 /* Compatibility with old naming */ 1105 static inline int pci_write_config_byte(pci_dev_t pcidev, int offset, 1106 u8 value) 1107 { 1108 return pci_write_config8(pcidev, offset, value); 1109 } 1110 1111 /* Compatibility with old naming */ 1112 static inline int pci_read_config_dword(pci_dev_t pcidev, int offset, 1113 u32 *valuep) 1114 { 1115 return pci_read_config32(pcidev, offset, valuep); 1116 } 1117 1118 /* Compatibility with old naming */ 1119 static inline int pci_read_config_word(pci_dev_t pcidev, int offset, 1120 u16 *valuep) 1121 { 1122 return pci_read_config16(pcidev, offset, valuep); 1123 } 1124 1125 /* Compatibility with old naming */ 1126 static inline int pci_read_config_byte(pci_dev_t pcidev, int offset, 1127 u8 *valuep) 1128 { 1129 return pci_read_config8(pcidev, offset, valuep); 1130 } 1131 #endif /* CONFIG_DM_PCI_COMPAT */ 1132 1133 /** 1134 * dm_pciauto_config_device() - configure a device ready for use 1135 * 1136 * Space is allocated for each PCI base address register (BAR) so that the 1137 * devices are mapped into memory and I/O space ready for use. 1138 * 1139 * @dev: Device to configure 1140 * @return 0 if OK, -ve on error 1141 */ 1142 int dm_pciauto_config_device(struct udevice *dev); 1143 1144 /** 1145 * pci_conv_32_to_size() - convert a 32-bit read value to the given size 1146 * 1147 * Some PCI buses must always perform 32-bit reads. The data must then be 1148 * shifted and masked to reflect the required access size and offset. This 1149 * function performs this transformation. 1150 * 1151 * @value: Value to transform (32-bit value read from @offset & ~3) 1152 * @offset: Register offset that was read 1153 * @size: Required size of the result 1154 * @return the value that would have been obtained if the read had been 1155 * performed at the given offset with the correct size 1156 */ 1157 ulong pci_conv_32_to_size(ulong value, uint offset, enum pci_size_t size); 1158 1159 /** 1160 * pci_conv_size_to_32() - update a 32-bit value to prepare for a write 1161 * 1162 * Some PCI buses must always perform 32-bit writes. To emulate a smaller 1163 * write the old 32-bit data must be read, updated with the required new data 1164 * and written back as a 32-bit value. This function performs the 1165 * transformation from the old value to the new value. 1166 * 1167 * @value: Value to transform (32-bit value read from @offset & ~3) 1168 * @offset: Register offset that should be written 1169 * @size: Required size of the write 1170 * @return the value that should be written as a 32-bit access to @offset & ~3. 1171 */ 1172 ulong pci_conv_size_to_32(ulong old, ulong value, uint offset, 1173 enum pci_size_t size); 1174 1175 /** 1176 * pci_get_controller() - obtain the controller to use for a bus 1177 * 1178 * @dev: Device to check 1179 * @return pointer to the controller device for this bus 1180 */ 1181 struct udevice *pci_get_controller(struct udevice *dev); 1182 1183 /** 1184 * pci_get_regions() - obtain pointers to all the region types 1185 * 1186 * @dev: Device to check 1187 * @iop: Returns a pointer to the I/O region, or NULL if none 1188 * @memp: Returns a pointer to the memory region, or NULL if none 1189 * @prefp: Returns a pointer to the pre-fetch region, or NULL if none 1190 * @return the number of non-NULL regions returned, normally 3 1191 */ 1192 int pci_get_regions(struct udevice *dev, struct pci_region **iop, 1193 struct pci_region **memp, struct pci_region **prefp); 1194 1195 /** 1196 * dm_pci_write_bar32() - Write the address of a BAR 1197 * 1198 * This writes a raw address to a bar 1199 * 1200 * @dev: PCI device to update 1201 * @barnum: BAR number (0-5) 1202 * @addr: BAR address 1203 */ 1204 void dm_pci_write_bar32(struct udevice *dev, int barnum, u32 addr); 1205 1206 /** 1207 * dm_pci_read_bar32() - read a base address register from a device 1208 * 1209 * @dev: Device to check 1210 * @barnum: Bar number to read (numbered from 0) 1211 * @return: value of BAR 1212 */ 1213 u32 dm_pci_read_bar32(struct udevice *dev, int barnum); 1214 1215 /** 1216 * dm_pci_bus_to_phys() - convert a PCI bus address to a physical address 1217 * 1218 * @dev: Device containing the PCI address 1219 * @addr: PCI address to convert 1220 * @flags: Flags for the region type (PCI_REGION_...) 1221 * @return physical address corresponding to that PCI bus address 1222 */ 1223 phys_addr_t dm_pci_bus_to_phys(struct udevice *dev, pci_addr_t addr, 1224 unsigned long flags); 1225 1226 /** 1227 * dm_pci_phys_to_bus() - convert a physical address to a PCI bus address 1228 * 1229 * @dev: Device containing the bus address 1230 * @addr: Physical address to convert 1231 * @flags: Flags for the region type (PCI_REGION_...) 1232 * @return PCI bus address corresponding to that physical address 1233 */ 1234 pci_addr_t dm_pci_phys_to_bus(struct udevice *dev, phys_addr_t addr, 1235 unsigned long flags); 1236 1237 /** 1238 * dm_pci_map_bar() - get a virtual address associated with a BAR region 1239 * 1240 * Looks up a base address register and finds the physical memory address 1241 * that corresponds to it 1242 * 1243 * @dev: Device to check 1244 * @bar: Bar number to read (numbered from 0) 1245 * @flags: Flags for the region type (PCI_REGION_...) 1246 * @return: pointer to the virtual address to use 1247 */ 1248 void *dm_pci_map_bar(struct udevice *dev, int bar, int flags); 1249 1250 #define dm_pci_virt_to_bus(dev, addr, flags) \ 1251 dm_pci_phys_to_bus(dev, (virt_to_phys(addr)), (flags)) 1252 #define dm_pci_bus_to_virt(dev, addr, flags, len, map_flags) \ 1253 map_physmem(dm_pci_bus_to_phys(dev, (addr), (flags)), \ 1254 (len), (map_flags)) 1255 1256 #define dm_pci_phys_to_mem(dev, addr) \ 1257 dm_pci_phys_to_bus((dev), (addr), PCI_REGION_MEM) 1258 #define dm_pci_mem_to_phys(dev, addr) \ 1259 dm_pci_bus_to_phys((dev), (addr), PCI_REGION_MEM) 1260 #define dm_pci_phys_to_io(dev, addr) \ 1261 dm_pci_phys_to_bus((dev), (addr), PCI_REGION_IO) 1262 #define dm_pci_io_to_phys(dev, addr) \ 1263 dm_pci_bus_to_phys((dev), (addr), PCI_REGION_IO) 1264 1265 #define dm_pci_virt_to_mem(dev, addr) \ 1266 dm_pci_virt_to_bus((dev), (addr), PCI_REGION_MEM) 1267 #define dm_pci_mem_to_virt(dev, addr, len, map_flags) \ 1268 dm_pci_bus_to_virt((dev), (addr), PCI_REGION_MEM, (len), (map_flags)) 1269 #define dm_pci_virt_to_io(dev, addr) \ 1270 dm_pci_virt_to_bus((dev), (addr), PCI_REGION_IO) 1271 #define dm_pci_io_to_virt(dev, addr, len, map_flags) \ 1272 dm_pci_bus_to_virt((dev), (addr), PCI_REGION_IO, (len), (map_flags)) 1273 1274 /** 1275 * dm_pci_find_device() - find a device by vendor/device ID 1276 * 1277 * @vendor: Vendor ID 1278 * @device: Device ID 1279 * @index: 0 to find the first match, 1 for second, etc. 1280 * @devp: Returns pointer to the device, if found 1281 * @return 0 if found, -ve on error 1282 */ 1283 int dm_pci_find_device(unsigned int vendor, unsigned int device, int index, 1284 struct udevice **devp); 1285 1286 /** 1287 * dm_pci_find_class() - find a device by class 1288 * 1289 * @find_class: 3-byte (24-bit) class value to find 1290 * @index: 0 to find the first match, 1 for second, etc. 1291 * @devp: Returns pointer to the device, if found 1292 * @return 0 if found, -ve on error 1293 */ 1294 int dm_pci_find_class(uint find_class, int index, struct udevice **devp); 1295 1296 /** 1297 * struct dm_pci_emul_ops - PCI device emulator operations 1298 */ 1299 struct dm_pci_emul_ops { 1300 /** 1301 * get_devfn(): Check which device and function this emulators 1302 * 1303 * @dev: device to check 1304 * @return the device and function this emulates, or -ve on error 1305 */ 1306 int (*get_devfn)(struct udevice *dev); 1307 /** 1308 * read_config() - Read a PCI configuration value 1309 * 1310 * @dev: Emulated device to read from 1311 * @offset: Byte offset within the device's configuration space 1312 * @valuep: Place to put the returned value 1313 * @size: Access size 1314 * @return 0 if OK, -ve on error 1315 */ 1316 int (*read_config)(struct udevice *dev, uint offset, ulong *valuep, 1317 enum pci_size_t size); 1318 /** 1319 * write_config() - Write a PCI configuration value 1320 * 1321 * @dev: Emulated device to write to 1322 * @offset: Byte offset within the device's configuration space 1323 * @value: Value to write 1324 * @size: Access size 1325 * @return 0 if OK, -ve on error 1326 */ 1327 int (*write_config)(struct udevice *dev, uint offset, ulong value, 1328 enum pci_size_t size); 1329 /** 1330 * read_io() - Read a PCI I/O value 1331 * 1332 * @dev: Emulated device to read from 1333 * @addr: I/O address to read 1334 * @valuep: Place to put the returned value 1335 * @size: Access size 1336 * @return 0 if OK, -ENOENT if @addr is not mapped by this device, 1337 * other -ve value on error 1338 */ 1339 int (*read_io)(struct udevice *dev, unsigned int addr, ulong *valuep, 1340 enum pci_size_t size); 1341 /** 1342 * write_io() - Write a PCI I/O value 1343 * 1344 * @dev: Emulated device to write from 1345 * @addr: I/O address to write 1346 * @value: Value to write 1347 * @size: Access size 1348 * @return 0 if OK, -ENOENT if @addr is not mapped by this device, 1349 * other -ve value on error 1350 */ 1351 int (*write_io)(struct udevice *dev, unsigned int addr, 1352 ulong value, enum pci_size_t size); 1353 /** 1354 * map_physmem() - Map a device into sandbox memory 1355 * 1356 * @dev: Emulated device to map 1357 * @addr: Memory address, normally corresponding to a PCI BAR. 1358 * The device should have been configured to have a BAR 1359 * at this address. 1360 * @lenp: On entry, the size of the area to map, On exit it is 1361 * updated to the size actually mapped, which may be less 1362 * if the device has less space 1363 * @ptrp: Returns a pointer to the mapped address. The device's 1364 * space can be accessed as @lenp bytes starting here 1365 * @return 0 if OK, -ENOENT if @addr is not mapped by this device, 1366 * other -ve value on error 1367 */ 1368 int (*map_physmem)(struct udevice *dev, phys_addr_t addr, 1369 unsigned long *lenp, void **ptrp); 1370 /** 1371 * unmap_physmem() - undo a memory mapping 1372 * 1373 * This must be called after map_physmem() to undo the mapping. 1374 * Some devices can use this to check what has been written into 1375 * their mapped memory and perform an operations they require on it. 1376 * In this way, map/unmap can be used as a sort of handshake between 1377 * the emulated device and its users. 1378 * 1379 * @dev: Emuated device to unmap 1380 * @vaddr: Mapped memory address, as passed to map_physmem() 1381 * @len: Size of area mapped, as returned by map_physmem() 1382 * @return 0 if OK, -ve on error 1383 */ 1384 int (*unmap_physmem)(struct udevice *dev, const void *vaddr, 1385 unsigned long len); 1386 }; 1387 1388 /* Get access to a PCI device emulator's operations */ 1389 #define pci_get_emul_ops(dev) ((struct dm_pci_emul_ops *)(dev)->driver->ops) 1390 1391 /** 1392 * sandbox_pci_get_emul() - Get the emulation device for a PCI device 1393 * 1394 * Searches for a suitable emulator for the given PCI bus device 1395 * 1396 * @bus: PCI bus to search 1397 * @find_devfn: PCI device and function address (PCI_DEVFN()) 1398 * @emulp: Returns emulated device if found 1399 * @return 0 if found, -ENODEV if not found 1400 */ 1401 int sandbox_pci_get_emul(struct udevice *bus, pci_dev_t find_devfn, 1402 struct udevice **emulp); 1403 1404 #endif /* CONFIG_DM_PCI */ 1405 1406 /** 1407 * PCI_DEVICE - macro used to describe a specific pci device 1408 * @vend: the 16 bit PCI Vendor ID 1409 * @dev: the 16 bit PCI Device ID 1410 * 1411 * This macro is used to create a struct pci_device_id that matches a 1412 * specific device. The subvendor and subdevice fields will be set to 1413 * PCI_ANY_ID. 1414 */ 1415 #define PCI_DEVICE(vend, dev) \ 1416 .vendor = (vend), .device = (dev), \ 1417 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID 1418 1419 /** 1420 * PCI_DEVICE_SUB - macro used to describe a specific pci device with subsystem 1421 * @vend: the 16 bit PCI Vendor ID 1422 * @dev: the 16 bit PCI Device ID 1423 * @subvend: the 16 bit PCI Subvendor ID 1424 * @subdev: the 16 bit PCI Subdevice ID 1425 * 1426 * This macro is used to create a struct pci_device_id that matches a 1427 * specific device with subsystem information. 1428 */ 1429 #define PCI_DEVICE_SUB(vend, dev, subvend, subdev) \ 1430 .vendor = (vend), .device = (dev), \ 1431 .subvendor = (subvend), .subdevice = (subdev) 1432 1433 /** 1434 * PCI_DEVICE_CLASS - macro used to describe a specific pci device class 1435 * @dev_class: the class, subclass, prog-if triple for this device 1436 * @dev_class_mask: the class mask for this device 1437 * 1438 * This macro is used to create a struct pci_device_id that matches a 1439 * specific PCI class. The vendor, device, subvendor, and subdevice 1440 * fields will be set to PCI_ANY_ID. 1441 */ 1442 #define PCI_DEVICE_CLASS(dev_class, dev_class_mask) \ 1443 .class = (dev_class), .class_mask = (dev_class_mask), \ 1444 .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \ 1445 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID 1446 1447 /** 1448 * PCI_VDEVICE - macro used to describe a specific pci device in short form 1449 * @vend: the vendor name 1450 * @dev: the 16 bit PCI Device ID 1451 * 1452 * This macro is used to create a struct pci_device_id that matches a 1453 * specific PCI device. The subvendor, and subdevice fields will be set 1454 * to PCI_ANY_ID. The macro allows the next field to follow as the device 1455 * private data. 1456 */ 1457 1458 #define PCI_VDEVICE(vend, dev) \ 1459 .vendor = PCI_VENDOR_ID_##vend, .device = (dev), \ 1460 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, 0, 0 1461 1462 /** 1463 * struct pci_driver_entry - Matches a driver to its pci_device_id list 1464 * @driver: Driver to use 1465 * @match: List of match records for this driver, terminated by {} 1466 */ 1467 struct pci_driver_entry { 1468 struct driver *driver; 1469 const struct pci_device_id *match; 1470 }; 1471 1472 #define U_BOOT_PCI_DEVICE(__name, __match) \ 1473 ll_entry_declare(struct pci_driver_entry, __name, pci_driver_entry) = {\ 1474 .driver = llsym(struct driver, __name, driver), \ 1475 .match = __match, \ 1476 } 1477 1478 #endif /* __ASSEMBLY__ */ 1479 #endif /* _PCI_H */ 1480