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 /* 15 * Under PCI, each device has 256 bytes of configuration address space, 16 * of which the first 64 bytes are standardized as follows: 17 */ 18 #define PCI_VENDOR_ID 0x00 /* 16 bits */ 19 #define PCI_DEVICE_ID 0x02 /* 16 bits */ 20 #define PCI_COMMAND 0x04 /* 16 bits */ 21 #define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */ 22 #define PCI_COMMAND_MEMORY 0x2 /* Enable response in Memory space */ 23 #define PCI_COMMAND_MASTER 0x4 /* Enable bus mastering */ 24 #define PCI_COMMAND_SPECIAL 0x8 /* Enable response to special cycles */ 25 #define PCI_COMMAND_INVALIDATE 0x10 /* Use memory write and invalidate */ 26 #define PCI_COMMAND_VGA_PALETTE 0x20 /* Enable palette snooping */ 27 #define PCI_COMMAND_PARITY 0x40 /* Enable parity checking */ 28 #define PCI_COMMAND_WAIT 0x80 /* Enable address/data stepping */ 29 #define PCI_COMMAND_SERR 0x100 /* Enable SERR */ 30 #define PCI_COMMAND_FAST_BACK 0x200 /* Enable back-to-back writes */ 31 32 #define PCI_STATUS 0x06 /* 16 bits */ 33 #define PCI_STATUS_CAP_LIST 0x10 /* Support Capability List */ 34 #define PCI_STATUS_66MHZ 0x20 /* Support 66 Mhz PCI 2.1 bus */ 35 #define PCI_STATUS_UDF 0x40 /* Support User Definable Features [obsolete] */ 36 #define PCI_STATUS_FAST_BACK 0x80 /* Accept fast-back to back */ 37 #define PCI_STATUS_PARITY 0x100 /* Detected parity error */ 38 #define PCI_STATUS_DEVSEL_MASK 0x600 /* DEVSEL timing */ 39 #define PCI_STATUS_DEVSEL_FAST 0x000 40 #define PCI_STATUS_DEVSEL_MEDIUM 0x200 41 #define PCI_STATUS_DEVSEL_SLOW 0x400 42 #define PCI_STATUS_SIG_TARGET_ABORT 0x800 /* Set on target abort */ 43 #define PCI_STATUS_REC_TARGET_ABORT 0x1000 /* Master ack of " */ 44 #define PCI_STATUS_REC_MASTER_ABORT 0x2000 /* Set on master abort */ 45 #define PCI_STATUS_SIG_SYSTEM_ERROR 0x4000 /* Set when we drive SERR */ 46 #define PCI_STATUS_DETECTED_PARITY 0x8000 /* Set on parity error */ 47 48 #define PCI_CLASS_REVISION 0x08 /* High 24 bits are class, low 8 49 revision */ 50 #define PCI_REVISION_ID 0x08 /* Revision ID */ 51 #define PCI_CLASS_PROG 0x09 /* Reg. Level Programming Interface */ 52 #define PCI_CLASS_DEVICE 0x0a /* Device class */ 53 #define PCI_CLASS_CODE 0x0b /* Device class code */ 54 #define PCI_CLASS_CODE_TOO_OLD 0x00 55 #define PCI_CLASS_CODE_STORAGE 0x01 56 #define PCI_CLASS_CODE_NETWORK 0x02 57 #define PCI_CLASS_CODE_DISPLAY 0x03 58 #define PCI_CLASS_CODE_MULTIMEDIA 0x04 59 #define PCI_CLASS_CODE_MEMORY 0x05 60 #define PCI_CLASS_CODE_BRIDGE 0x06 61 #define PCI_CLASS_CODE_COMM 0x07 62 #define PCI_CLASS_CODE_PERIPHERAL 0x08 63 #define PCI_CLASS_CODE_INPUT 0x09 64 #define PCI_CLASS_CODE_DOCKING 0x0A 65 #define PCI_CLASS_CODE_PROCESSOR 0x0B 66 #define PCI_CLASS_CODE_SERIAL 0x0C 67 #define PCI_CLASS_CODE_WIRELESS 0x0D 68 #define PCI_CLASS_CODE_I2O 0x0E 69 #define PCI_CLASS_CODE_SATELLITE 0x0F 70 #define PCI_CLASS_CODE_CRYPTO 0x10 71 #define PCI_CLASS_CODE_DATA 0x11 72 /* Base Class 0x12 - 0xFE is reserved */ 73 #define PCI_CLASS_CODE_OTHER 0xFF 74 75 #define PCI_CLASS_SUB_CODE 0x0a /* Device sub-class code */ 76 #define PCI_CLASS_SUB_CODE_TOO_OLD_NOTVGA 0x00 77 #define PCI_CLASS_SUB_CODE_TOO_OLD_VGA 0x01 78 #define PCI_CLASS_SUB_CODE_STORAGE_SCSI 0x00 79 #define PCI_CLASS_SUB_CODE_STORAGE_IDE 0x01 80 #define PCI_CLASS_SUB_CODE_STORAGE_FLOPPY 0x02 81 #define PCI_CLASS_SUB_CODE_STORAGE_IPIBUS 0x03 82 #define PCI_CLASS_SUB_CODE_STORAGE_RAID 0x04 83 #define PCI_CLASS_SUB_CODE_STORAGE_ATA 0x05 84 #define PCI_CLASS_SUB_CODE_STORAGE_SATA 0x06 85 #define PCI_CLASS_SUB_CODE_STORAGE_SAS 0x07 86 #define PCI_CLASS_SUB_CODE_STORAGE_OTHER 0x80 87 #define PCI_CLASS_SUB_CODE_NETWORK_ETHERNET 0x00 88 #define PCI_CLASS_SUB_CODE_NETWORK_TOKENRING 0x01 89 #define PCI_CLASS_SUB_CODE_NETWORK_FDDI 0x02 90 #define PCI_CLASS_SUB_CODE_NETWORK_ATM 0x03 91 #define PCI_CLASS_SUB_CODE_NETWORK_ISDN 0x04 92 #define PCI_CLASS_SUB_CODE_NETWORK_WORLDFIP 0x05 93 #define PCI_CLASS_SUB_CODE_NETWORK_PICMG 0x06 94 #define PCI_CLASS_SUB_CODE_NETWORK_OTHER 0x80 95 #define PCI_CLASS_SUB_CODE_DISPLAY_VGA 0x00 96 #define PCI_CLASS_SUB_CODE_DISPLAY_XGA 0x01 97 #define PCI_CLASS_SUB_CODE_DISPLAY_3D 0x02 98 #define PCI_CLASS_SUB_CODE_DISPLAY_OTHER 0x80 99 #define PCI_CLASS_SUB_CODE_MULTIMEDIA_VIDEO 0x00 100 #define PCI_CLASS_SUB_CODE_MULTIMEDIA_AUDIO 0x01 101 #define PCI_CLASS_SUB_CODE_MULTIMEDIA_PHONE 0x02 102 #define PCI_CLASS_SUB_CODE_MULTIMEDIA_OTHER 0x80 103 #define PCI_CLASS_SUB_CODE_MEMORY_RAM 0x00 104 #define PCI_CLASS_SUB_CODE_MEMORY_FLASH 0x01 105 #define PCI_CLASS_SUB_CODE_MEMORY_OTHER 0x80 106 #define PCI_CLASS_SUB_CODE_BRIDGE_HOST 0x00 107 #define PCI_CLASS_SUB_CODE_BRIDGE_ISA 0x01 108 #define PCI_CLASS_SUB_CODE_BRIDGE_EISA 0x02 109 #define PCI_CLASS_SUB_CODE_BRIDGE_MCA 0x03 110 #define PCI_CLASS_SUB_CODE_BRIDGE_PCI 0x04 111 #define PCI_CLASS_SUB_CODE_BRIDGE_PCMCIA 0x05 112 #define PCI_CLASS_SUB_CODE_BRIDGE_NUBUS 0x06 113 #define PCI_CLASS_SUB_CODE_BRIDGE_CARDBUS 0x07 114 #define PCI_CLASS_SUB_CODE_BRIDGE_RACEWAY 0x08 115 #define PCI_CLASS_SUB_CODE_BRIDGE_SEMI_PCI 0x09 116 #define PCI_CLASS_SUB_CODE_BRIDGE_INFINIBAND 0x0A 117 #define PCI_CLASS_SUB_CODE_BRIDGE_OTHER 0x80 118 #define PCI_CLASS_SUB_CODE_COMM_SERIAL 0x00 119 #define PCI_CLASS_SUB_CODE_COMM_PARALLEL 0x01 120 #define PCI_CLASS_SUB_CODE_COMM_MULTIPORT 0x02 121 #define PCI_CLASS_SUB_CODE_COMM_MODEM 0x03 122 #define PCI_CLASS_SUB_CODE_COMM_GPIB 0x04 123 #define PCI_CLASS_SUB_CODE_COMM_SMARTCARD 0x05 124 #define PCI_CLASS_SUB_CODE_COMM_OTHER 0x80 125 #define PCI_CLASS_SUB_CODE_PERIPHERAL_PIC 0x00 126 #define PCI_CLASS_SUB_CODE_PERIPHERAL_DMA 0x01 127 #define PCI_CLASS_SUB_CODE_PERIPHERAL_TIMER 0x02 128 #define PCI_CLASS_SUB_CODE_PERIPHERAL_RTC 0x03 129 #define PCI_CLASS_SUB_CODE_PERIPHERAL_HOTPLUG 0x04 130 #define PCI_CLASS_SUB_CODE_PERIPHERAL_SD 0x05 131 #define PCI_CLASS_SUB_CODE_PERIPHERAL_OTHER 0x80 132 #define PCI_CLASS_SUB_CODE_INPUT_KEYBOARD 0x00 133 #define PCI_CLASS_SUB_CODE_INPUT_DIGITIZER 0x01 134 #define PCI_CLASS_SUB_CODE_INPUT_MOUSE 0x02 135 #define PCI_CLASS_SUB_CODE_INPUT_SCANNER 0x03 136 #define PCI_CLASS_SUB_CODE_INPUT_GAMEPORT 0x04 137 #define PCI_CLASS_SUB_CODE_INPUT_OTHER 0x80 138 #define PCI_CLASS_SUB_CODE_DOCKING_GENERIC 0x00 139 #define PCI_CLASS_SUB_CODE_DOCKING_OTHER 0x80 140 #define PCI_CLASS_SUB_CODE_PROCESSOR_386 0x00 141 #define PCI_CLASS_SUB_CODE_PROCESSOR_486 0x01 142 #define PCI_CLASS_SUB_CODE_PROCESSOR_PENTIUM 0x02 143 #define PCI_CLASS_SUB_CODE_PROCESSOR_ALPHA 0x10 144 #define PCI_CLASS_SUB_CODE_PROCESSOR_POWERPC 0x20 145 #define PCI_CLASS_SUB_CODE_PROCESSOR_MIPS 0x30 146 #define PCI_CLASS_SUB_CODE_PROCESSOR_COPROC 0x40 147 #define PCI_CLASS_SUB_CODE_SERIAL_1394 0x00 148 #define PCI_CLASS_SUB_CODE_SERIAL_ACCESSBUS 0x01 149 #define PCI_CLASS_SUB_CODE_SERIAL_SSA 0x02 150 #define PCI_CLASS_SUB_CODE_SERIAL_USB 0x03 151 #define PCI_CLASS_SUB_CODE_SERIAL_FIBRECHAN 0x04 152 #define PCI_CLASS_SUB_CODE_SERIAL_SMBUS 0x05 153 #define PCI_CLASS_SUB_CODE_SERIAL_INFINIBAND 0x06 154 #define PCI_CLASS_SUB_CODE_SERIAL_IPMI 0x07 155 #define PCI_CLASS_SUB_CODE_SERIAL_SERCOS 0x08 156 #define PCI_CLASS_SUB_CODE_SERIAL_CANBUS 0x09 157 #define PCI_CLASS_SUB_CODE_WIRELESS_IRDA 0x00 158 #define PCI_CLASS_SUB_CODE_WIRELESS_IR 0x01 159 #define PCI_CLASS_SUB_CODE_WIRELESS_RF 0x10 160 #define PCI_CLASS_SUB_CODE_WIRELESS_BLUETOOTH 0x11 161 #define PCI_CLASS_SUB_CODE_WIRELESS_BROADBAND 0x12 162 #define PCI_CLASS_SUB_CODE_WIRELESS_80211A 0x20 163 #define PCI_CLASS_SUB_CODE_WIRELESS_80211B 0x21 164 #define PCI_CLASS_SUB_CODE_WIRELESS_OTHER 0x80 165 #define PCI_CLASS_SUB_CODE_I2O_V1_0 0x00 166 #define PCI_CLASS_SUB_CODE_SATELLITE_TV 0x01 167 #define PCI_CLASS_SUB_CODE_SATELLITE_AUDIO 0x02 168 #define PCI_CLASS_SUB_CODE_SATELLITE_VOICE 0x03 169 #define PCI_CLASS_SUB_CODE_SATELLITE_DATA 0x04 170 #define PCI_CLASS_SUB_CODE_CRYPTO_NETWORK 0x00 171 #define PCI_CLASS_SUB_CODE_CRYPTO_ENTERTAINMENT 0x10 172 #define PCI_CLASS_SUB_CODE_CRYPTO_OTHER 0x80 173 #define PCI_CLASS_SUB_CODE_DATA_DPIO 0x00 174 #define PCI_CLASS_SUB_CODE_DATA_PERFCNTR 0x01 175 #define PCI_CLASS_SUB_CODE_DATA_COMMSYNC 0x10 176 #define PCI_CLASS_SUB_CODE_DATA_MGMT 0x20 177 #define PCI_CLASS_SUB_CODE_DATA_OTHER 0x80 178 179 #define PCI_CACHE_LINE_SIZE 0x0c /* 8 bits */ 180 #define PCI_LATENCY_TIMER 0x0d /* 8 bits */ 181 #define PCI_HEADER_TYPE 0x0e /* 8 bits */ 182 #define PCI_HEADER_TYPE_NORMAL 0 183 #define PCI_HEADER_TYPE_BRIDGE 1 184 #define PCI_HEADER_TYPE_CARDBUS 2 185 186 #define PCI_BIST 0x0f /* 8 bits */ 187 #define PCI_BIST_CODE_MASK 0x0f /* Return result */ 188 #define PCI_BIST_START 0x40 /* 1 to start BIST, 2 secs or less */ 189 #define PCI_BIST_CAPABLE 0x80 /* 1 if BIST capable */ 190 191 /* 192 * Base addresses specify locations in memory or I/O space. 193 * Decoded size can be determined by writing a value of 194 * 0xffffffff to the register, and reading it back. Only 195 * 1 bits are decoded. 196 */ 197 #define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */ 198 #define PCI_BASE_ADDRESS_1 0x14 /* 32 bits [htype 0,1 only] */ 199 #define PCI_BASE_ADDRESS_2 0x18 /* 32 bits [htype 0 only] */ 200 #define PCI_BASE_ADDRESS_3 0x1c /* 32 bits */ 201 #define PCI_BASE_ADDRESS_4 0x20 /* 32 bits */ 202 #define PCI_BASE_ADDRESS_5 0x24 /* 32 bits */ 203 #define PCI_BASE_ADDRESS_SPACE 0x01 /* 0 = memory, 1 = I/O */ 204 #define PCI_BASE_ADDRESS_SPACE_IO 0x01 205 #define PCI_BASE_ADDRESS_SPACE_MEMORY 0x00 206 #define PCI_BASE_ADDRESS_MEM_TYPE_MASK 0x06 207 #define PCI_BASE_ADDRESS_MEM_TYPE_32 0x00 /* 32 bit address */ 208 #define PCI_BASE_ADDRESS_MEM_TYPE_1M 0x02 /* Below 1M [obsolete] */ 209 #define PCI_BASE_ADDRESS_MEM_TYPE_64 0x04 /* 64 bit address */ 210 #define PCI_BASE_ADDRESS_MEM_PREFETCH 0x08 /* prefetchable? */ 211 #define PCI_BASE_ADDRESS_MEM_MASK (~0x0fULL) 212 #define PCI_BASE_ADDRESS_IO_MASK (~0x03ULL) 213 /* bit 1 is reserved if address_space = 1 */ 214 215 /* Header type 0 (normal devices) */ 216 #define PCI_CARDBUS_CIS 0x28 217 #define PCI_SUBSYSTEM_VENDOR_ID 0x2c 218 #define PCI_SUBSYSTEM_ID 0x2e 219 #define PCI_ROM_ADDRESS 0x30 /* Bits 31..11 are address, 10..1 reserved */ 220 #define PCI_ROM_ADDRESS_ENABLE 0x01 221 #define PCI_ROM_ADDRESS_MASK (~0x7ffULL) 222 223 #define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */ 224 225 /* 0x35-0x3b are reserved */ 226 #define PCI_INTERRUPT_LINE 0x3c /* 8 bits */ 227 #define PCI_INTERRUPT_PIN 0x3d /* 8 bits */ 228 #define PCI_MIN_GNT 0x3e /* 8 bits */ 229 #define PCI_MAX_LAT 0x3f /* 8 bits */ 230 231 /* Header type 1 (PCI-to-PCI bridges) */ 232 #define PCI_PRIMARY_BUS 0x18 /* Primary bus number */ 233 #define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */ 234 #define PCI_SUBORDINATE_BUS 0x1a /* Highest bus number behind the bridge */ 235 #define PCI_SEC_LATENCY_TIMER 0x1b /* Latency timer for secondary interface */ 236 #define PCI_IO_BASE 0x1c /* I/O range behind the bridge */ 237 #define PCI_IO_LIMIT 0x1d 238 #define PCI_IO_RANGE_TYPE_MASK 0x0f /* I/O bridging type */ 239 #define PCI_IO_RANGE_TYPE_16 0x00 240 #define PCI_IO_RANGE_TYPE_32 0x01 241 #define PCI_IO_RANGE_MASK ~0x0f 242 #define PCI_SEC_STATUS 0x1e /* Secondary status register, only bit 14 used */ 243 #define PCI_MEMORY_BASE 0x20 /* Memory range behind */ 244 #define PCI_MEMORY_LIMIT 0x22 245 #define PCI_MEMORY_RANGE_TYPE_MASK 0x0f 246 #define PCI_MEMORY_RANGE_MASK ~0x0f 247 #define PCI_PREF_MEMORY_BASE 0x24 /* Prefetchable memory range behind */ 248 #define PCI_PREF_MEMORY_LIMIT 0x26 249 #define PCI_PREF_RANGE_TYPE_MASK 0x0f 250 #define PCI_PREF_RANGE_TYPE_32 0x00 251 #define PCI_PREF_RANGE_TYPE_64 0x01 252 #define PCI_PREF_RANGE_MASK ~0x0f 253 #define PCI_PREF_BASE_UPPER32 0x28 /* Upper half of prefetchable memory range */ 254 #define PCI_PREF_LIMIT_UPPER32 0x2c 255 #define PCI_IO_BASE_UPPER16 0x30 /* Upper half of I/O addresses */ 256 #define PCI_IO_LIMIT_UPPER16 0x32 257 /* 0x34 same as for htype 0 */ 258 /* 0x35-0x3b is reserved */ 259 #define PCI_ROM_ADDRESS1 0x38 /* Same as PCI_ROM_ADDRESS, but for htype 1 */ 260 /* 0x3c-0x3d are same as for htype 0 */ 261 #define PCI_BRIDGE_CONTROL 0x3e 262 #define PCI_BRIDGE_CTL_PARITY 0x01 /* Enable parity detection on secondary interface */ 263 #define PCI_BRIDGE_CTL_SERR 0x02 /* The same for SERR forwarding */ 264 #define PCI_BRIDGE_CTL_NO_ISA 0x04 /* Disable bridging of ISA ports */ 265 #define PCI_BRIDGE_CTL_VGA 0x08 /* Forward VGA addresses */ 266 #define PCI_BRIDGE_CTL_MASTER_ABORT 0x20 /* Report master aborts */ 267 #define PCI_BRIDGE_CTL_BUS_RESET 0x40 /* Secondary bus reset */ 268 #define PCI_BRIDGE_CTL_FAST_BACK 0x80 /* Fast Back2Back enabled on secondary interface */ 269 270 /* From 440ep */ 271 #define PCI_ERREN 0x48 /* Error Enable */ 272 #define PCI_ERRSTS 0x49 /* Error Status */ 273 #define PCI_BRDGOPT1 0x4A /* PCI Bridge Options 1 */ 274 #define PCI_PLBSESR0 0x4C /* PCI PLB Slave Error Syndrome 0 */ 275 #define PCI_PLBSESR1 0x50 /* PCI PLB Slave Error Syndrome 1 */ 276 #define PCI_PLBSEAR 0x54 /* PCI PLB Slave Error Address */ 277 #define PCI_CAPID 0x58 /* Capability Identifier */ 278 #define PCI_NEXTITEMPTR 0x59 /* Next Item Pointer */ 279 #define PCI_PMC 0x5A /* Power Management Capabilities */ 280 #define PCI_PMCSR 0x5C /* Power Management Control Status */ 281 #define PCI_PMCSRBSE 0x5E /* PMCSR PCI to PCI Bridge Support Extensions */ 282 #define PCI_BRDGOPT2 0x60 /* PCI Bridge Options 2 */ 283 #define PCI_PMSCRR 0x64 /* Power Management State Change Request Re. */ 284 285 /* Header type 2 (CardBus bridges) */ 286 #define PCI_CB_CAPABILITY_LIST 0x14 287 /* 0x15 reserved */ 288 #define PCI_CB_SEC_STATUS 0x16 /* Secondary status */ 289 #define PCI_CB_PRIMARY_BUS 0x18 /* PCI bus number */ 290 #define PCI_CB_CARD_BUS 0x19 /* CardBus bus number */ 291 #define PCI_CB_SUBORDINATE_BUS 0x1a /* Subordinate bus number */ 292 #define PCI_CB_LATENCY_TIMER 0x1b /* CardBus latency timer */ 293 #define PCI_CB_MEMORY_BASE_0 0x1c 294 #define PCI_CB_MEMORY_LIMIT_0 0x20 295 #define PCI_CB_MEMORY_BASE_1 0x24 296 #define PCI_CB_MEMORY_LIMIT_1 0x28 297 #define PCI_CB_IO_BASE_0 0x2c 298 #define PCI_CB_IO_BASE_0_HI 0x2e 299 #define PCI_CB_IO_LIMIT_0 0x30 300 #define PCI_CB_IO_LIMIT_0_HI 0x32 301 #define PCI_CB_IO_BASE_1 0x34 302 #define PCI_CB_IO_BASE_1_HI 0x36 303 #define PCI_CB_IO_LIMIT_1 0x38 304 #define PCI_CB_IO_LIMIT_1_HI 0x3a 305 #define PCI_CB_IO_RANGE_MASK ~0x03 306 /* 0x3c-0x3d are same as for htype 0 */ 307 #define PCI_CB_BRIDGE_CONTROL 0x3e 308 #define PCI_CB_BRIDGE_CTL_PARITY 0x01 /* Similar to standard bridge control register */ 309 #define PCI_CB_BRIDGE_CTL_SERR 0x02 310 #define PCI_CB_BRIDGE_CTL_ISA 0x04 311 #define PCI_CB_BRIDGE_CTL_VGA 0x08 312 #define PCI_CB_BRIDGE_CTL_MASTER_ABORT 0x20 313 #define PCI_CB_BRIDGE_CTL_CB_RESET 0x40 /* CardBus reset */ 314 #define PCI_CB_BRIDGE_CTL_16BIT_INT 0x80 /* Enable interrupt for 16-bit cards */ 315 #define PCI_CB_BRIDGE_CTL_PREFETCH_MEM0 0x100 /* Prefetch enable for both memory regions */ 316 #define PCI_CB_BRIDGE_CTL_PREFETCH_MEM1 0x200 317 #define PCI_CB_BRIDGE_CTL_POST_WRITES 0x400 318 #define PCI_CB_SUBSYSTEM_VENDOR_ID 0x40 319 #define PCI_CB_SUBSYSTEM_ID 0x42 320 #define PCI_CB_LEGACY_MODE_BASE 0x44 /* 16-bit PC Card legacy mode base address (ExCa) */ 321 /* 0x48-0x7f reserved */ 322 323 /* Capability lists */ 324 325 #define PCI_CAP_LIST_ID 0 /* Capability ID */ 326 #define PCI_CAP_ID_PM 0x01 /* Power Management */ 327 #define PCI_CAP_ID_AGP 0x02 /* Accelerated Graphics Port */ 328 #define PCI_CAP_ID_VPD 0x03 /* Vital Product Data */ 329 #define PCI_CAP_ID_SLOTID 0x04 /* Slot Identification */ 330 #define PCI_CAP_ID_MSI 0x05 /* Message Signalled Interrupts */ 331 #define PCI_CAP_ID_CHSWP 0x06 /* CompactPCI HotSwap */ 332 #define PCI_CAP_ID_EXP 0x10 /* PCI Express */ 333 #define PCI_CAP_LIST_NEXT 1 /* Next capability in the list */ 334 #define PCI_CAP_FLAGS 2 /* Capability defined flags (16 bits) */ 335 #define PCI_CAP_SIZEOF 4 336 337 /* Power Management Registers */ 338 339 #define PCI_PM_CAP_VER_MASK 0x0007 /* Version */ 340 #define PCI_PM_CAP_PME_CLOCK 0x0008 /* PME clock required */ 341 #define PCI_PM_CAP_AUX_POWER 0x0010 /* Auxilliary power support */ 342 #define PCI_PM_CAP_DSI 0x0020 /* Device specific initialization */ 343 #define PCI_PM_CAP_D1 0x0200 /* D1 power state support */ 344 #define PCI_PM_CAP_D2 0x0400 /* D2 power state support */ 345 #define PCI_PM_CAP_PME 0x0800 /* PME pin supported */ 346 #define PCI_PM_CTRL 4 /* PM control and status register */ 347 #define PCI_PM_CTRL_STATE_MASK 0x0003 /* Current power state (D0 to D3) */ 348 #define PCI_PM_CTRL_PME_ENABLE 0x0100 /* PME pin enable */ 349 #define PCI_PM_CTRL_DATA_SEL_MASK 0x1e00 /* Data select (??) */ 350 #define PCI_PM_CTRL_DATA_SCALE_MASK 0x6000 /* Data scale (??) */ 351 #define PCI_PM_CTRL_PME_STATUS 0x8000 /* PME pin status */ 352 #define PCI_PM_PPB_EXTENSIONS 6 /* PPB support extensions (??) */ 353 #define PCI_PM_PPB_B2_B3 0x40 /* Stop clock when in D3hot (??) */ 354 #define PCI_PM_BPCC_ENABLE 0x80 /* Bus power/clock control enable (??) */ 355 #define PCI_PM_DATA_REGISTER 7 /* (??) */ 356 #define PCI_PM_SIZEOF 8 357 358 /* AGP registers */ 359 360 #define PCI_AGP_VERSION 2 /* BCD version number */ 361 #define PCI_AGP_RFU 3 /* Rest of capability flags */ 362 #define PCI_AGP_STATUS 4 /* Status register */ 363 #define PCI_AGP_STATUS_RQ_MASK 0xff000000 /* Maximum number of requests - 1 */ 364 #define PCI_AGP_STATUS_SBA 0x0200 /* Sideband addressing supported */ 365 #define PCI_AGP_STATUS_64BIT 0x0020 /* 64-bit addressing supported */ 366 #define PCI_AGP_STATUS_FW 0x0010 /* FW transfers supported */ 367 #define PCI_AGP_STATUS_RATE4 0x0004 /* 4x transfer rate supported */ 368 #define PCI_AGP_STATUS_RATE2 0x0002 /* 2x transfer rate supported */ 369 #define PCI_AGP_STATUS_RATE1 0x0001 /* 1x transfer rate supported */ 370 #define PCI_AGP_COMMAND 8 /* Control register */ 371 #define PCI_AGP_COMMAND_RQ_MASK 0xff000000 /* Master: Maximum number of requests */ 372 #define PCI_AGP_COMMAND_SBA 0x0200 /* Sideband addressing enabled */ 373 #define PCI_AGP_COMMAND_AGP 0x0100 /* Allow processing of AGP transactions */ 374 #define PCI_AGP_COMMAND_64BIT 0x0020 /* Allow processing of 64-bit addresses */ 375 #define PCI_AGP_COMMAND_FW 0x0010 /* Force FW transfers */ 376 #define PCI_AGP_COMMAND_RATE4 0x0004 /* Use 4x rate */ 377 #define PCI_AGP_COMMAND_RATE2 0x0002 /* Use 4x rate */ 378 #define PCI_AGP_COMMAND_RATE1 0x0001 /* Use 4x rate */ 379 #define PCI_AGP_SIZEOF 12 380 381 /* PCI-X registers */ 382 383 #define PCI_X_CMD_DPERR_E 0x0001 /* Data Parity Error Recovery Enable */ 384 #define PCI_X_CMD_ERO 0x0002 /* Enable Relaxed Ordering */ 385 #define PCI_X_CMD_MAX_READ 0x0000 /* Max Memory Read Byte Count */ 386 #define PCI_X_CMD_MAX_SPLIT 0x0030 /* Max Outstanding Split Transactions */ 387 #define PCI_X_CMD_VERSION(x) (((x) >> 12) & 3) /* Version */ 388 389 390 /* Slot Identification */ 391 392 #define PCI_SID_ESR 2 /* Expansion Slot Register */ 393 #define PCI_SID_ESR_NSLOTS 0x1f /* Number of expansion slots available */ 394 #define PCI_SID_ESR_FIC 0x20 /* First In Chassis Flag */ 395 #define PCI_SID_CHASSIS_NR 3 /* Chassis Number */ 396 397 /* Message Signalled Interrupts registers */ 398 399 #define PCI_MSI_FLAGS 2 /* Various flags */ 400 #define PCI_MSI_FLAGS_64BIT 0x80 /* 64-bit addresses allowed */ 401 #define PCI_MSI_FLAGS_QSIZE 0x70 /* Message queue size configured */ 402 #define PCI_MSI_FLAGS_QMASK 0x0e /* Maximum queue size available */ 403 #define PCI_MSI_FLAGS_ENABLE 0x01 /* MSI feature enabled */ 404 #define PCI_MSI_RFU 3 /* Rest of capability flags */ 405 #define PCI_MSI_ADDRESS_LO 4 /* Lower 32 bits */ 406 #define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */ 407 #define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */ 408 #define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */ 409 410 #define PCI_MAX_PCI_DEVICES 32 411 #define PCI_MAX_PCI_FUNCTIONS 8 412 413 #define PCI_FIND_CAP_TTL 0x48 414 #define CAP_START_POS 0x40 415 416 /* Include the ID list */ 417 418 #include <pci_ids.h> 419 420 #ifndef __ASSEMBLY__ 421 422 #ifdef CONFIG_SYS_PCI_64BIT 423 typedef u64 pci_addr_t; 424 typedef u64 pci_size_t; 425 #else 426 typedef u32 pci_addr_t; 427 typedef u32 pci_size_t; 428 #endif 429 430 struct pci_region { 431 pci_addr_t bus_start; /* Start on the bus */ 432 phys_addr_t phys_start; /* Start in physical address space */ 433 pci_size_t size; /* Size */ 434 unsigned long flags; /* Resource flags */ 435 436 pci_addr_t bus_lower; 437 }; 438 439 #define PCI_REGION_MEM 0x00000000 /* PCI memory space */ 440 #define PCI_REGION_IO 0x00000001 /* PCI IO space */ 441 #define PCI_REGION_TYPE 0x00000001 442 #define PCI_REGION_PREFETCH 0x00000008 /* prefetchable PCI memory */ 443 444 #define PCI_REGION_SYS_MEMORY 0x00000100 /* System memory */ 445 #define PCI_REGION_RO 0x00000200 /* Read-only memory */ 446 447 static inline void pci_set_region(struct pci_region *reg, 448 pci_addr_t bus_start, 449 phys_addr_t phys_start, 450 pci_size_t size, 451 unsigned long flags) { 452 reg->bus_start = bus_start; 453 reg->phys_start = phys_start; 454 reg->size = size; 455 reg->flags = flags; 456 } 457 458 typedef int pci_dev_t; 459 460 #define PCI_BUS(d) (((d) >> 16) & 0xff) 461 #define PCI_DEV(d) (((d) >> 11) & 0x1f) 462 #define PCI_FUNC(d) (((d) >> 8) & 0x7) 463 #define PCI_DEVFN(d, f) ((d) << 11 | (f) << 8) 464 #define PCI_MASK_BUS(bdf) ((bdf) & 0xffff) 465 #define PCI_ADD_BUS(bus, devfn) (((bus) << 16) | (devfn)) 466 #define PCI_BDF(b, d, f) ((b) << 16 | PCI_DEVFN(d, f)) 467 #define PCI_VENDEV(v, d) (((v) << 16) | (d)) 468 #define PCI_ANY_ID (~0) 469 470 struct pci_device_id { 471 unsigned int vendor, device; /* Vendor and device ID or PCI_ANY_ID */ 472 }; 473 474 struct pci_controller; 475 476 struct pci_config_table { 477 unsigned int vendor, device; /* Vendor and device ID or PCI_ANY_ID */ 478 unsigned int class; /* Class ID, or PCI_ANY_ID */ 479 unsigned int bus; /* Bus number, or PCI_ANY_ID */ 480 unsigned int dev; /* Device number, or PCI_ANY_ID */ 481 unsigned int func; /* Function number, or PCI_ANY_ID */ 482 483 void (*config_device)(struct pci_controller* hose, pci_dev_t dev, 484 struct pci_config_table *); 485 unsigned long priv[3]; 486 }; 487 488 extern void pci_cfgfunc_do_nothing(struct pci_controller* hose, pci_dev_t dev, 489 struct pci_config_table *); 490 extern void pci_cfgfunc_config_device(struct pci_controller* hose, pci_dev_t dev, 491 struct pci_config_table *); 492 493 #define MAX_PCI_REGIONS 7 494 495 #define INDIRECT_TYPE_NO_PCIE_LINK 1 496 497 /* 498 * Structure of a PCI controller (host bridge) 499 */ 500 struct pci_controller { 501 #ifdef CONFIG_DM_PCI 502 struct udevice *bus; 503 struct udevice *ctlr; 504 #else 505 struct pci_controller *next; 506 #endif 507 508 int first_busno; 509 int last_busno; 510 511 volatile unsigned int *cfg_addr; 512 volatile unsigned char *cfg_data; 513 514 int indirect_type; 515 516 struct pci_region regions[MAX_PCI_REGIONS]; 517 int region_count; 518 519 struct pci_config_table *config_table; 520 521 void (*fixup_irq)(struct pci_controller *, pci_dev_t); 522 #ifndef CONFIG_DM_PCI 523 /* Low-level architecture-dependent routines */ 524 int (*read_byte)(struct pci_controller*, pci_dev_t, int where, u8 *); 525 int (*read_word)(struct pci_controller*, pci_dev_t, int where, u16 *); 526 int (*read_dword)(struct pci_controller*, pci_dev_t, int where, u32 *); 527 int (*write_byte)(struct pci_controller*, pci_dev_t, int where, u8); 528 int (*write_word)(struct pci_controller*, pci_dev_t, int where, u16); 529 int (*write_dword)(struct pci_controller*, pci_dev_t, int where, u32); 530 #endif 531 532 /* Used by auto config */ 533 struct pci_region *pci_mem, *pci_io, *pci_prefetch; 534 535 /* Used by ppc405 autoconfig*/ 536 struct pci_region *pci_fb; 537 #ifndef CONFIG_DM_PCI 538 int current_busno; 539 540 void *priv_data; 541 #endif 542 }; 543 544 #ifndef CONFIG_DM_PCI 545 static inline void pci_set_ops(struct pci_controller *hose, 546 int (*read_byte)(struct pci_controller*, 547 pci_dev_t, int where, u8 *), 548 int (*read_word)(struct pci_controller*, 549 pci_dev_t, int where, u16 *), 550 int (*read_dword)(struct pci_controller*, 551 pci_dev_t, int where, u32 *), 552 int (*write_byte)(struct pci_controller*, 553 pci_dev_t, int where, u8), 554 int (*write_word)(struct pci_controller*, 555 pci_dev_t, int where, u16), 556 int (*write_dword)(struct pci_controller*, 557 pci_dev_t, int where, u32)) { 558 hose->read_byte = read_byte; 559 hose->read_word = read_word; 560 hose->read_dword = read_dword; 561 hose->write_byte = write_byte; 562 hose->write_word = write_word; 563 hose->write_dword = write_dword; 564 } 565 #endif 566 567 #ifdef CONFIG_PCI_INDIRECT_BRIDGE 568 extern void pci_setup_indirect(struct pci_controller* hose, u32 cfg_addr, u32 cfg_data); 569 #endif 570 571 extern phys_addr_t pci_hose_bus_to_phys(struct pci_controller* hose, 572 pci_addr_t addr, unsigned long flags); 573 extern pci_addr_t pci_hose_phys_to_bus(struct pci_controller* hose, 574 phys_addr_t addr, unsigned long flags); 575 576 #define pci_phys_to_bus(dev, addr, flags) \ 577 pci_hose_phys_to_bus(pci_bus_to_hose(PCI_BUS(dev)), (addr), (flags)) 578 #define pci_bus_to_phys(dev, addr, flags) \ 579 pci_hose_bus_to_phys(pci_bus_to_hose(PCI_BUS(dev)), (addr), (flags)) 580 581 #define pci_virt_to_bus(dev, addr, flags) \ 582 pci_hose_phys_to_bus(pci_bus_to_hose(PCI_BUS(dev)), \ 583 (virt_to_phys(addr)), (flags)) 584 #define pci_bus_to_virt(dev, addr, flags, len, map_flags) \ 585 map_physmem(pci_hose_bus_to_phys(pci_bus_to_hose(PCI_BUS(dev)), \ 586 (addr), (flags)), \ 587 (len), (map_flags)) 588 589 #define pci_phys_to_mem(dev, addr) \ 590 pci_phys_to_bus((dev), (addr), PCI_REGION_MEM) 591 #define pci_mem_to_phys(dev, addr) \ 592 pci_bus_to_phys((dev), (addr), PCI_REGION_MEM) 593 #define pci_phys_to_io(dev, addr) pci_phys_to_bus((dev), (addr), PCI_REGION_IO) 594 #define pci_io_to_phys(dev, addr) pci_bus_to_phys((dev), (addr), PCI_REGION_IO) 595 596 #define pci_virt_to_mem(dev, addr) \ 597 pci_virt_to_bus((dev), (addr), PCI_REGION_MEM) 598 #define pci_mem_to_virt(dev, addr, len, map_flags) \ 599 pci_bus_to_virt((dev), (addr), PCI_REGION_MEM, (len), (map_flags)) 600 #define pci_virt_to_io(dev, addr) \ 601 pci_virt_to_bus((dev), (addr), PCI_REGION_IO) 602 #define pci_io_to_virt(dev, addr, len, map_flags) \ 603 pci_bus_to_virt((dev), (addr), PCI_REGION_IO, (len), (map_flags)) 604 605 extern int pci_hose_read_config_byte(struct pci_controller *hose, 606 pci_dev_t dev, int where, u8 *val); 607 extern int pci_hose_read_config_word(struct pci_controller *hose, 608 pci_dev_t dev, int where, u16 *val); 609 extern int pci_hose_read_config_dword(struct pci_controller *hose, 610 pci_dev_t dev, int where, u32 *val); 611 extern int pci_hose_write_config_byte(struct pci_controller *hose, 612 pci_dev_t dev, int where, u8 val); 613 extern int pci_hose_write_config_word(struct pci_controller *hose, 614 pci_dev_t dev, int where, u16 val); 615 extern int pci_hose_write_config_dword(struct pci_controller *hose, 616 pci_dev_t dev, int where, u32 val); 617 618 #ifndef CONFIG_DM_PCI 619 extern int pci_read_config_byte(pci_dev_t dev, int where, u8 *val); 620 extern int pci_read_config_word(pci_dev_t dev, int where, u16 *val); 621 extern int pci_read_config_dword(pci_dev_t dev, int where, u32 *val); 622 extern int pci_write_config_byte(pci_dev_t dev, int where, u8 val); 623 extern int pci_write_config_word(pci_dev_t dev, int where, u16 val); 624 extern int pci_write_config_dword(pci_dev_t dev, int where, u32 val); 625 #endif 626 627 extern int pci_hose_read_config_byte_via_dword(struct pci_controller *hose, 628 pci_dev_t dev, int where, u8 *val); 629 extern int pci_hose_read_config_word_via_dword(struct pci_controller *hose, 630 pci_dev_t dev, int where, u16 *val); 631 extern int pci_hose_write_config_byte_via_dword(struct pci_controller *hose, 632 pci_dev_t dev, int where, u8 val); 633 extern int pci_hose_write_config_word_via_dword(struct pci_controller *hose, 634 pci_dev_t dev, int where, u16 val); 635 636 extern void *pci_map_bar(pci_dev_t pdev, int bar, int flags); 637 extern void pci_register_hose(struct pci_controller* hose); 638 extern struct pci_controller* pci_bus_to_hose(int bus); 639 extern struct pci_controller *find_hose_by_cfg_addr(void *cfg_addr); 640 641 extern int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev); 642 extern int pci_hose_scan(struct pci_controller *hose); 643 extern int pci_hose_scan_bus(struct pci_controller *hose, int bus); 644 645 extern void pciauto_region_init(struct pci_region* res); 646 extern void pciauto_region_align(struct pci_region *res, pci_size_t size); 647 extern int pciauto_region_allocate(struct pci_region* res, pci_size_t size, pci_addr_t *bar); 648 extern void pciauto_setup_device(struct pci_controller *hose, 649 pci_dev_t dev, int bars_num, 650 struct pci_region *mem, 651 struct pci_region *prefetch, 652 struct pci_region *io); 653 extern void pciauto_prescan_setup_bridge(struct pci_controller *hose, 654 pci_dev_t dev, int sub_bus); 655 extern void pciauto_postscan_setup_bridge(struct pci_controller *hose, 656 pci_dev_t dev, int sub_bus); 657 extern void pciauto_config_init(struct pci_controller *hose); 658 extern int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev); 659 660 extern pci_dev_t pci_find_device (unsigned int vendor, unsigned int device, int index); 661 extern pci_dev_t pci_find_devices (struct pci_device_id *ids, int index); 662 pci_dev_t pci_find_class(unsigned int find_class, int index); 663 664 extern int pci_hose_config_device(struct pci_controller *hose, 665 pci_dev_t dev, 666 unsigned long io, 667 pci_addr_t mem, 668 unsigned long command); 669 670 extern int pci_hose_find_capability(struct pci_controller *hose, pci_dev_t dev, 671 int cap); 672 extern int pci_hose_find_cap_start(struct pci_controller *hose, pci_dev_t dev, 673 u8 hdr_type); 674 extern int pci_find_cap(struct pci_controller *hose, pci_dev_t dev, int pos, 675 int cap); 676 677 #ifdef CONFIG_PCI_FIXUP_DEV 678 extern void board_pci_fixup_dev(struct pci_controller *hose, pci_dev_t dev, 679 unsigned short vendor, 680 unsigned short device, 681 unsigned short class); 682 #endif 683 684 const char * pci_class_str(u8 class); 685 int pci_last_busno(void); 686 687 #ifdef CONFIG_MPC85xx 688 extern void pci_mpc85xx_init (struct pci_controller *hose); 689 #endif 690 691 /** 692 * pci_write_bar32() - Write the address of a BAR including control bits 693 * 694 * This writes a raw address (with control bits) to a bar 695 * 696 * @hose: PCI hose to use 697 * @dev: PCI device to update 698 * @barnum: BAR number (0-5) 699 * @addr: BAR address with control bits 700 */ 701 void pci_write_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum, 702 u32 addr_and_ctrl); 703 704 /** 705 * pci_read_bar32() - read the address of a bar 706 * 707 * @hose: PCI hose to use 708 * @dev: PCI device to inspect 709 * @barnum: BAR number (0-5) 710 * @return address of the bar, masking out any control bits 711 * */ 712 u32 pci_read_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum); 713 714 /** 715 * pciauto_setup_rom() - Set up access to a device ROM 716 * 717 * @hose: PCI hose to use 718 * @dev: PCI device to adjust 719 * @return 0 if done, -ve on error 720 */ 721 int pciauto_setup_rom(struct pci_controller *hose, pci_dev_t dev); 722 723 /** 724 * pci_hose_find_devices() - Find devices by vendor/device ID 725 * 726 * @hose: PCI hose to search 727 * @busnum: Bus number to search 728 * @ids: PCI vendor/device IDs to look for, terminated by 0, 0 record 729 * @indexp: Pointer to device index to find. To find the first matching 730 * device, pass 0; to find the second, pass 1, etc. This 731 * parameter is decremented for each non-matching device so 732 * can be called repeatedly. 733 */ 734 pci_dev_t pci_hose_find_devices(struct pci_controller *hose, int busnum, 735 struct pci_device_id *ids, int *indexp); 736 737 /* Access sizes for PCI reads and writes */ 738 enum pci_size_t { 739 PCI_SIZE_8, 740 PCI_SIZE_16, 741 PCI_SIZE_32, 742 }; 743 744 struct udevice; 745 746 #ifdef CONFIG_DM_PCI 747 /** 748 * struct pci_child_platdata - information stored about each PCI device 749 * 750 * Every device on a PCI bus has this per-child data. 751 * 752 * It can be accessed using dev_get_parentdata(dev) if dev->parent is a 753 * PCI bus (i.e. UCLASS_PCI) 754 * 755 * @devfn: Encoded device and function index - see PCI_DEVFN() 756 * @vendor: PCI vendor ID (see pci_ids.h) 757 * @device: PCI device ID (see pci_ids.h) 758 * @class: PCI class, 3 bytes: (base, sub, prog-if) 759 */ 760 struct pci_child_platdata { 761 int devfn; 762 unsigned short vendor; 763 unsigned short device; 764 unsigned int class; 765 }; 766 767 /* PCI bus operations */ 768 struct dm_pci_ops { 769 /** 770 * read_config() - Read a PCI configuration value 771 * 772 * PCI buses must support reading and writing configuration values 773 * so that the bus can be scanned and its devices configured. 774 * 775 * Normally PCI_BUS(@bdf) is the same as @bus->seq, but not always. 776 * If bridges exist it is possible to use the top-level bus to 777 * access a sub-bus. In that case @bus will be the top-level bus 778 * and PCI_BUS(bdf) will be a different (higher) value 779 * 780 * @bus: Bus to read from 781 * @bdf: Bus, device and function to read 782 * @offset: Byte offset within the device's configuration space 783 * @valuep: Place to put the returned value 784 * @size: Access size 785 * @return 0 if OK, -ve on error 786 */ 787 int (*read_config)(struct udevice *bus, pci_dev_t bdf, uint offset, 788 ulong *valuep, enum pci_size_t size); 789 /** 790 * write_config() - Write a PCI configuration value 791 * 792 * @bus: Bus to write to 793 * @bdf: Bus, device and function to write 794 * @offset: Byte offset within the device's configuration space 795 * @value: Value to write 796 * @size: Access size 797 * @return 0 if OK, -ve on error 798 */ 799 int (*write_config)(struct udevice *bus, pci_dev_t bdf, uint offset, 800 ulong value, enum pci_size_t size); 801 }; 802 803 /* Get access to a PCI bus' operations */ 804 #define pci_get_ops(dev) ((struct dm_pci_ops *)(dev)->driver->ops) 805 806 /** 807 * pci_bind_bus_devices() - scan a PCI bus and bind devices 808 * 809 * Scan a PCI bus looking for devices. Bind each one that is found. If 810 * devices are already bound that match the scanned devices, just update the 811 * child data so that the device can be used correctly (this happens when 812 * the device tree describes devices we expect to see on the bus). 813 * 814 * Devices that are bound in this way will use a generic PCI driver which 815 * does nothing. The device can still be accessed but will not provide any 816 * driver interface. 817 * 818 * @bus: Bus containing devices to bind 819 * @return 0 if OK, -ve on error 820 */ 821 int pci_bind_bus_devices(struct udevice *bus); 822 823 /** 824 * pci_auto_config_devices() - configure bus devices ready for use 825 * 826 * This works through all devices on a bus by scanning the driver model 827 * data structures (normally these have been set up by pci_bind_bus_devices() 828 * earlier). 829 * 830 * Space is allocated for each PCI base address register (BAR) so that the 831 * devices are mapped into memory and I/O space ready for use. 832 * 833 * @bus: Bus containing devices to bind 834 * @return 0 if OK, -ve on error 835 */ 836 int pci_auto_config_devices(struct udevice *bus); 837 838 /** 839 * pci_bus_find_bdf() - Find a device given its PCI bus address 840 * 841 * @bdf: PCI device address: bus, device and function -see PCI_BDF() 842 * @devp: Returns the device for this address, if found 843 * @return 0 if OK, -ENODEV if not found 844 */ 845 int pci_bus_find_bdf(pci_dev_t bdf, struct udevice **devp); 846 847 /** 848 * pci_bus_find_devfn() - Find a device on a bus 849 * 850 * @find_devfn: PCI device address (device and function only) 851 * @devp: Returns the device for this address, if found 852 * @return 0 if OK, -ENODEV if not found 853 */ 854 int pci_bus_find_devfn(struct udevice *bus, pci_dev_t find_devfn, 855 struct udevice **devp); 856 857 /** 858 * pci_get_ff() - Returns a mask for the given access size 859 * 860 * @size: Access size 861 * @return 0xff for PCI_SIZE_8, 0xffff for PCI_SIZE_16, 0xffffffff for 862 * PCI_SIZE_32 863 */ 864 int pci_get_ff(enum pci_size_t size); 865 866 /** 867 * pci_bus_find_devices () - Find devices on a bus 868 * 869 * @bus: Bus to search 870 * @ids: PCI vendor/device IDs to look for, terminated by 0, 0 record 871 * @indexp: Pointer to device index to find. To find the first matching 872 * device, pass 0; to find the second, pass 1, etc. This 873 * parameter is decremented for each non-matching device so 874 * can be called repeatedly. 875 * @devp: Returns matching device if found 876 * @return 0 if found, -ENODEV if not 877 */ 878 int pci_bus_find_devices(struct udevice *bus, struct pci_device_id *ids, 879 int *indexp, struct udevice **devp); 880 881 /** 882 * pci_find_device_id() - Find a device on any bus 883 * 884 * @ids: PCI vendor/device IDs to look for, terminated by 0, 0 record 885 * @index: Index number of device to find, 0 for the first match, 1 for 886 * the second, etc. 887 * @devp: Returns matching device if found 888 * @return 0 if found, -ENODEV if not 889 */ 890 int pci_find_device_id(struct pci_device_id *ids, int index, 891 struct udevice **devp); 892 893 /** 894 * dm_pci_hose_probe_bus() - probe a subordinate bus, scanning it for devices 895 * 896 * This probes the given bus which causes it to be scanned for devices. The 897 * devices will be bound but not probed. 898 * 899 * @hose specifies the PCI hose that will be used for the scan. This is 900 * always a top-level bus with uclass UCLASS_PCI. The bus to scan is 901 * in @bdf, and is a subordinate bus reachable from @hose. 902 * 903 * @hose: PCI hose to scan 904 * @bdf: PCI bus address to scan (PCI_BUS(bdf) is the bus number) 905 * @return 0 if OK, -ve on error 906 */ 907 int dm_pci_hose_probe_bus(struct pci_controller *hose, pci_dev_t bdf); 908 909 /** 910 * pci_bus_read_config() - Read a configuration value from a device 911 * 912 * TODO(sjg@chromium.org): We should be able to pass just a device and have 913 * it do the right thing. It would be good to have that function also. 914 * 915 * @bus: Bus to read from 916 * @bdf: PCI device address: bus, device and function -see PCI_BDF() 917 * @valuep: Place to put the returned value 918 * @size: Access size 919 * @return 0 if OK, -ve on error 920 */ 921 int pci_bus_read_config(struct udevice *bus, pci_dev_t bdf, int offset, 922 unsigned long *valuep, enum pci_size_t size); 923 924 /** 925 * pci_bus_write_config() - Write a configuration value to a device 926 * 927 * @bus: Bus to write from 928 * @bdf: PCI device address: bus, device and function -see PCI_BDF() 929 * @value: Value to write 930 * @size: Access size 931 * @return 0 if OK, -ve on error 932 */ 933 int pci_bus_write_config(struct udevice *bus, pci_dev_t bdf, int offset, 934 unsigned long value, enum pci_size_t size); 935 936 /* 937 * The following functions provide access to the above without needing the 938 * size parameter. We are trying to encourage the use of the 8/16/32-style 939 * functions, rather than byte/word/dword. But both are supported. 940 */ 941 int pci_write_config32(pci_dev_t pcidev, int offset, u32 value); 942 943 /* Compatibility with old naming */ 944 static inline int pci_write_config_dword(pci_dev_t pcidev, int offset, 945 u32 value) 946 { 947 return pci_write_config32(pcidev, offset, value); 948 } 949 950 int pci_write_config16(pci_dev_t pcidev, int offset, u16 value); 951 952 /* Compatibility with old naming */ 953 static inline int pci_write_config_word(pci_dev_t pcidev, int offset, 954 u16 value) 955 { 956 return pci_write_config16(pcidev, offset, value); 957 } 958 959 int pci_write_config8(pci_dev_t pcidev, int offset, u8 value); 960 961 /* Compatibility with old naming */ 962 static inline int pci_write_config_byte(pci_dev_t pcidev, int offset, 963 u8 value) 964 { 965 return pci_write_config8(pcidev, offset, value); 966 } 967 968 int pci_read_config32(pci_dev_t pcidev, int offset, u32 *valuep); 969 970 /* Compatibility with old naming */ 971 static inline int pci_read_config_dword(pci_dev_t pcidev, int offset, 972 u32 *valuep) 973 { 974 return pci_read_config32(pcidev, offset, valuep); 975 } 976 977 int pci_read_config16(pci_dev_t pcidev, int offset, u16 *valuep); 978 979 /* Compatibility with old naming */ 980 static inline int pci_read_config_word(pci_dev_t pcidev, int offset, 981 u16 *valuep) 982 { 983 return pci_read_config16(pcidev, offset, valuep); 984 } 985 986 int pci_read_config8(pci_dev_t pcidev, int offset, u8 *valuep); 987 988 /* Compatibility with old naming */ 989 static inline int pci_read_config_byte(pci_dev_t pcidev, int offset, 990 u8 *valuep) 991 { 992 return pci_read_config8(pcidev, offset, valuep); 993 } 994 995 /** 996 * struct dm_pci_emul_ops - PCI device emulator operations 997 */ 998 struct dm_pci_emul_ops { 999 /** 1000 * get_devfn(): Check which device and function this emulators 1001 * 1002 * @dev: device to check 1003 * @return the device and function this emulates, or -ve on error 1004 */ 1005 int (*get_devfn)(struct udevice *dev); 1006 /** 1007 * read_config() - Read a PCI configuration value 1008 * 1009 * @dev: Emulated device to read from 1010 * @offset: Byte offset within the device's configuration space 1011 * @valuep: Place to put the returned value 1012 * @size: Access size 1013 * @return 0 if OK, -ve on error 1014 */ 1015 int (*read_config)(struct udevice *dev, uint offset, ulong *valuep, 1016 enum pci_size_t size); 1017 /** 1018 * write_config() - Write a PCI configuration value 1019 * 1020 * @dev: Emulated device to write to 1021 * @offset: Byte offset within the device's configuration space 1022 * @value: Value to write 1023 * @size: Access size 1024 * @return 0 if OK, -ve on error 1025 */ 1026 int (*write_config)(struct udevice *dev, uint offset, ulong value, 1027 enum pci_size_t size); 1028 /** 1029 * read_io() - Read a PCI I/O value 1030 * 1031 * @dev: Emulated device to read from 1032 * @addr: I/O address to read 1033 * @valuep: Place to put the returned value 1034 * @size: Access size 1035 * @return 0 if OK, -ENOENT if @addr is not mapped by this device, 1036 * other -ve value on error 1037 */ 1038 int (*read_io)(struct udevice *dev, unsigned int addr, ulong *valuep, 1039 enum pci_size_t size); 1040 /** 1041 * write_io() - Write a PCI I/O value 1042 * 1043 * @dev: Emulated device to write from 1044 * @addr: I/O address to write 1045 * @value: Value to write 1046 * @size: Access size 1047 * @return 0 if OK, -ENOENT if @addr is not mapped by this device, 1048 * other -ve value on error 1049 */ 1050 int (*write_io)(struct udevice *dev, unsigned int addr, 1051 ulong value, enum pci_size_t size); 1052 /** 1053 * map_physmem() - Map a device into sandbox memory 1054 * 1055 * @dev: Emulated device to map 1056 * @addr: Memory address, normally corresponding to a PCI BAR. 1057 * The device should have been configured to have a BAR 1058 * at this address. 1059 * @lenp: On entry, the size of the area to map, On exit it is 1060 * updated to the size actually mapped, which may be less 1061 * if the device has less space 1062 * @ptrp: Returns a pointer to the mapped address. The device's 1063 * space can be accessed as @lenp bytes starting here 1064 * @return 0 if OK, -ENOENT if @addr is not mapped by this device, 1065 * other -ve value on error 1066 */ 1067 int (*map_physmem)(struct udevice *dev, phys_addr_t addr, 1068 unsigned long *lenp, void **ptrp); 1069 /** 1070 * unmap_physmem() - undo a memory mapping 1071 * 1072 * This must be called after map_physmem() to undo the mapping. 1073 * Some devices can use this to check what has been written into 1074 * their mapped memory and perform an operations they require on it. 1075 * In this way, map/unmap can be used as a sort of handshake between 1076 * the emulated device and its users. 1077 * 1078 * @dev: Emuated device to unmap 1079 * @vaddr: Mapped memory address, as passed to map_physmem() 1080 * @len: Size of area mapped, as returned by map_physmem() 1081 * @return 0 if OK, -ve on error 1082 */ 1083 int (*unmap_physmem)(struct udevice *dev, const void *vaddr, 1084 unsigned long len); 1085 }; 1086 1087 /* Get access to a PCI device emulator's operations */ 1088 #define pci_get_emul_ops(dev) ((struct dm_pci_emul_ops *)(dev)->driver->ops) 1089 1090 /** 1091 * sandbox_pci_get_emul() - Get the emulation device for a PCI device 1092 * 1093 * Searches for a suitable emulator for the given PCI bus device 1094 * 1095 * @bus: PCI bus to search 1096 * @find_devfn: PCI device and function address (PCI_DEVFN()) 1097 * @emulp: Returns emulated device if found 1098 * @return 0 if found, -ENODEV if not found 1099 */ 1100 int sandbox_pci_get_emul(struct udevice *bus, pci_dev_t find_devfn, 1101 struct udevice **emulp); 1102 1103 #endif 1104 1105 #endif /* __ASSEMBLY__ */ 1106 #endif /* _PCI_H */ 1107