1 /* 2 * pci_regs.h 3 * 4 * PCI standard defines 5 * Copyright 1994, Drew Eckhardt 6 * Copyright 1997--1999 Martin Mares <mj@ucw.cz> 7 * 8 * For more information, please consult the following manuals (look at 9 * http://www.pcisig.com/ for how to get them): 10 * 11 * PCI BIOS Specification 12 * PCI Local Bus Specification 13 * PCI to PCI Bridge Specification 14 * PCI System Design Guide 15 * 16 * For HyperTransport information, please consult the following manuals 17 * from http://www.hypertransport.org 18 * 19 * The HyperTransport I/O Link Specification 20 */ 21 22 #ifndef LINUX_PCI_REGS_H 23 #define LINUX_PCI_REGS_H 24 25 /* 26 * Under PCI, each device has 256 bytes of configuration address space, 27 * of which the first 64 bytes are standardized as follows: 28 */ 29 #define PCI_STD_HEADER_SIZEOF 64 30 #define PCI_VENDOR_ID 0x00 /* 16 bits */ 31 #define PCI_DEVICE_ID 0x02 /* 16 bits */ 32 #define PCI_COMMAND 0x04 /* 16 bits */ 33 #define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */ 34 #define PCI_COMMAND_MEMORY 0x2 /* Enable response in Memory space */ 35 #define PCI_COMMAND_MASTER 0x4 /* Enable bus mastering */ 36 #define PCI_COMMAND_SPECIAL 0x8 /* Enable response to special cycles */ 37 #define PCI_COMMAND_INVALIDATE 0x10 /* Use memory write and invalidate */ 38 #define PCI_COMMAND_VGA_PALETTE 0x20 /* Enable palette snooping */ 39 #define PCI_COMMAND_PARITY 0x40 /* Enable parity checking */ 40 #define PCI_COMMAND_WAIT 0x80 /* Enable address/data stepping */ 41 #define PCI_COMMAND_SERR 0x100 /* Enable SERR */ 42 #define PCI_COMMAND_FAST_BACK 0x200 /* Enable back-to-back writes */ 43 #define PCI_COMMAND_INTX_DISABLE 0x400 /* INTx Emulation Disable */ 44 45 #define PCI_STATUS 0x06 /* 16 bits */ 46 #define PCI_STATUS_INTERRUPT 0x08 /* Interrupt status */ 47 #define PCI_STATUS_CAP_LIST 0x10 /* Support Capability List */ 48 #define PCI_STATUS_66MHZ 0x20 /* Support 66 MHz PCI 2.1 bus */ 49 #define PCI_STATUS_UDF 0x40 /* Support User Definable Features [obsolete] */ 50 #define PCI_STATUS_FAST_BACK 0x80 /* Accept fast-back to back */ 51 #define PCI_STATUS_PARITY 0x100 /* Detected parity error */ 52 #define PCI_STATUS_DEVSEL_MASK 0x600 /* DEVSEL timing */ 53 #define PCI_STATUS_DEVSEL_FAST 0x000 54 #define PCI_STATUS_DEVSEL_MEDIUM 0x200 55 #define PCI_STATUS_DEVSEL_SLOW 0x400 56 #define PCI_STATUS_SIG_TARGET_ABORT 0x800 /* Set on target abort */ 57 #define PCI_STATUS_REC_TARGET_ABORT 0x1000 /* Master ack of " */ 58 #define PCI_STATUS_REC_MASTER_ABORT 0x2000 /* Set on master abort */ 59 #define PCI_STATUS_SIG_SYSTEM_ERROR 0x4000 /* Set when we drive SERR */ 60 #define PCI_STATUS_DETECTED_PARITY 0x8000 /* Set on parity error */ 61 62 #define PCI_CLASS_REVISION 0x08 /* High 24 bits are class, low 8 revision */ 63 #define PCI_REVISION_ID 0x08 /* Revision ID */ 64 #define PCI_CLASS_PROG 0x09 /* Reg. Level Programming Interface */ 65 #define PCI_CLASS_DEVICE 0x0a /* Device class */ 66 67 #define PCI_CACHE_LINE_SIZE 0x0c /* 8 bits */ 68 #define PCI_LATENCY_TIMER 0x0d /* 8 bits */ 69 #define PCI_HEADER_TYPE 0x0e /* 8 bits */ 70 #define PCI_HEADER_TYPE_NORMAL 0 71 #define PCI_HEADER_TYPE_BRIDGE 1 72 #define PCI_HEADER_TYPE_CARDBUS 2 73 74 #define PCI_BIST 0x0f /* 8 bits */ 75 #define PCI_BIST_CODE_MASK 0x0f /* Return result */ 76 #define PCI_BIST_START 0x40 /* 1 to start BIST, 2 secs or less */ 77 #define PCI_BIST_CAPABLE 0x80 /* 1 if BIST capable */ 78 79 /* 80 * Base addresses specify locations in memory or I/O space. 81 * Decoded size can be determined by writing a value of 82 * 0xffffffff to the register, and reading it back. Only 83 * 1 bits are decoded. 84 */ 85 #define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */ 86 #define PCI_BASE_ADDRESS_1 0x14 /* 32 bits [htype 0,1 only] */ 87 #define PCI_BASE_ADDRESS_2 0x18 /* 32 bits [htype 0 only] */ 88 #define PCI_BASE_ADDRESS_3 0x1c /* 32 bits */ 89 #define PCI_BASE_ADDRESS_4 0x20 /* 32 bits */ 90 #define PCI_BASE_ADDRESS_5 0x24 /* 32 bits */ 91 #define PCI_BASE_ADDRESS_SPACE 0x01 /* 0 = memory, 1 = I/O */ 92 #define PCI_BASE_ADDRESS_SPACE_IO 0x01 93 #define PCI_BASE_ADDRESS_SPACE_MEMORY 0x00 94 #define PCI_BASE_ADDRESS_MEM_TYPE_MASK 0x06 95 #define PCI_BASE_ADDRESS_MEM_TYPE_32 0x00 /* 32 bit address */ 96 #define PCI_BASE_ADDRESS_MEM_TYPE_1M 0x02 /* Below 1M [obsolete] */ 97 #define PCI_BASE_ADDRESS_MEM_TYPE_64 0x04 /* 64 bit address */ 98 #define PCI_BASE_ADDRESS_MEM_PREFETCH 0x08 /* prefetchable? */ 99 #define PCI_BASE_ADDRESS_MEM_MASK (~0x0fUL) 100 #define PCI_BASE_ADDRESS_IO_MASK (~0x03UL) 101 /* bit 1 is reserved if address_space = 1 */ 102 103 /* Header type 0 (normal devices) */ 104 #define PCI_CARDBUS_CIS 0x28 105 #define PCI_SUBSYSTEM_VENDOR_ID 0x2c 106 #define PCI_SUBSYSTEM_ID 0x2e 107 #define PCI_ROM_ADDRESS 0x30 /* Bits 31..11 are address, 10..1 reserved */ 108 #define PCI_ROM_ADDRESS_ENABLE 0x01 109 #define PCI_ROM_ADDRESS_MASK (~0x7ffUL) 110 111 #define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */ 112 113 /* 0x35-0x3b are reserved */ 114 #define PCI_INTERRUPT_LINE 0x3c /* 8 bits */ 115 #define PCI_INTERRUPT_PIN 0x3d /* 8 bits */ 116 #define PCI_MIN_GNT 0x3e /* 8 bits */ 117 #define PCI_MAX_LAT 0x3f /* 8 bits */ 118 119 /* Header type 1 (PCI-to-PCI bridges) */ 120 #define PCI_PRIMARY_BUS 0x18 /* Primary bus number */ 121 #define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */ 122 #define PCI_SUBORDINATE_BUS 0x1a /* Highest bus number behind the bridge */ 123 #define PCI_SEC_LATENCY_TIMER 0x1b /* Latency timer for secondary interface */ 124 #define PCI_IO_BASE 0x1c /* I/O range behind the bridge */ 125 #define PCI_IO_LIMIT 0x1d 126 #define PCI_IO_RANGE_TYPE_MASK 0x0fUL /* I/O bridging type */ 127 #define PCI_IO_RANGE_TYPE_16 0x00 128 #define PCI_IO_RANGE_TYPE_32 0x01 129 #define PCI_IO_RANGE_MASK (~0x0fUL) /* Standard 4K I/O windows */ 130 #define PCI_IO_1K_RANGE_MASK (~0x03UL) /* Intel 1K I/O windows */ 131 #define PCI_SEC_STATUS 0x1e /* Secondary status register, only bit 14 used */ 132 #define PCI_MEMORY_BASE 0x20 /* Memory range behind */ 133 #define PCI_MEMORY_LIMIT 0x22 134 #define PCI_MEMORY_RANGE_TYPE_MASK 0x0fUL 135 #define PCI_MEMORY_RANGE_MASK (~0x0fUL) 136 #define PCI_PREF_MEMORY_BASE 0x24 /* Prefetchable memory range behind */ 137 #define PCI_PREF_MEMORY_LIMIT 0x26 138 #define PCI_PREF_RANGE_TYPE_MASK 0x0fUL 139 #define PCI_PREF_RANGE_TYPE_32 0x00 140 #define PCI_PREF_RANGE_TYPE_64 0x01 141 #define PCI_PREF_RANGE_MASK (~0x0fUL) 142 #define PCI_PREF_BASE_UPPER32 0x28 /* Upper half of prefetchable memory range */ 143 #define PCI_PREF_LIMIT_UPPER32 0x2c 144 #define PCI_IO_BASE_UPPER16 0x30 /* Upper half of I/O addresses */ 145 #define PCI_IO_LIMIT_UPPER16 0x32 146 /* 0x34 same as for htype 0 */ 147 /* 0x35-0x3b is reserved */ 148 #define PCI_ROM_ADDRESS1 0x38 /* Same as PCI_ROM_ADDRESS, but for htype 1 */ 149 /* 0x3c-0x3d are same as for htype 0 */ 150 #define PCI_BRIDGE_CONTROL 0x3e 151 #define PCI_BRIDGE_CTL_PARITY 0x01 /* Enable parity detection on secondary interface */ 152 #define PCI_BRIDGE_CTL_SERR 0x02 /* The same for SERR forwarding */ 153 #define PCI_BRIDGE_CTL_ISA 0x04 /* Enable ISA mode */ 154 #define PCI_BRIDGE_CTL_VGA 0x08 /* Forward VGA addresses */ 155 #define PCI_BRIDGE_CTL_MASTER_ABORT 0x20 /* Report master aborts */ 156 #define PCI_BRIDGE_CTL_BUS_RESET 0x40 /* Secondary bus reset */ 157 #define PCI_BRIDGE_CTL_FAST_BACK 0x80 /* Fast Back2Back enabled on secondary interface */ 158 159 /* Header type 2 (CardBus bridges) */ 160 #define PCI_CB_CAPABILITY_LIST 0x14 161 /* 0x15 reserved */ 162 #define PCI_CB_SEC_STATUS 0x16 /* Secondary status */ 163 #define PCI_CB_PRIMARY_BUS 0x18 /* PCI bus number */ 164 #define PCI_CB_CARD_BUS 0x19 /* CardBus bus number */ 165 #define PCI_CB_SUBORDINATE_BUS 0x1a /* Subordinate bus number */ 166 #define PCI_CB_LATENCY_TIMER 0x1b /* CardBus latency timer */ 167 #define PCI_CB_MEMORY_BASE_0 0x1c 168 #define PCI_CB_MEMORY_LIMIT_0 0x20 169 #define PCI_CB_MEMORY_BASE_1 0x24 170 #define PCI_CB_MEMORY_LIMIT_1 0x28 171 #define PCI_CB_IO_BASE_0 0x2c 172 #define PCI_CB_IO_BASE_0_HI 0x2e 173 #define PCI_CB_IO_LIMIT_0 0x30 174 #define PCI_CB_IO_LIMIT_0_HI 0x32 175 #define PCI_CB_IO_BASE_1 0x34 176 #define PCI_CB_IO_BASE_1_HI 0x36 177 #define PCI_CB_IO_LIMIT_1 0x38 178 #define PCI_CB_IO_LIMIT_1_HI 0x3a 179 #define PCI_CB_IO_RANGE_MASK (~0x03UL) 180 /* 0x3c-0x3d are same as for htype 0 */ 181 #define PCI_CB_BRIDGE_CONTROL 0x3e 182 #define PCI_CB_BRIDGE_CTL_PARITY 0x01 /* Similar to standard bridge control register */ 183 #define PCI_CB_BRIDGE_CTL_SERR 0x02 184 #define PCI_CB_BRIDGE_CTL_ISA 0x04 185 #define PCI_CB_BRIDGE_CTL_VGA 0x08 186 #define PCI_CB_BRIDGE_CTL_MASTER_ABORT 0x20 187 #define PCI_CB_BRIDGE_CTL_CB_RESET 0x40 /* CardBus reset */ 188 #define PCI_CB_BRIDGE_CTL_16BIT_INT 0x80 /* Enable interrupt for 16-bit cards */ 189 #define PCI_CB_BRIDGE_CTL_PREFETCH_MEM0 0x100 /* Prefetch enable for both memory regions */ 190 #define PCI_CB_BRIDGE_CTL_PREFETCH_MEM1 0x200 191 #define PCI_CB_BRIDGE_CTL_POST_WRITES 0x400 192 #define PCI_CB_SUBSYSTEM_VENDOR_ID 0x40 193 #define PCI_CB_SUBSYSTEM_ID 0x42 194 #define PCI_CB_LEGACY_MODE_BASE 0x44 /* 16-bit PC Card legacy mode base address (ExCa) */ 195 /* 0x48-0x7f reserved */ 196 197 /* Capability lists */ 198 199 #define PCI_CAP_LIST_ID 0 /* Capability ID */ 200 #define PCI_CAP_ID_PM 0x01 /* Power Management */ 201 #define PCI_CAP_ID_AGP 0x02 /* Accelerated Graphics Port */ 202 #define PCI_CAP_ID_VPD 0x03 /* Vital Product Data */ 203 #define PCI_CAP_ID_SLOTID 0x04 /* Slot Identification */ 204 #define PCI_CAP_ID_MSI 0x05 /* Message Signalled Interrupts */ 205 #define PCI_CAP_ID_CHSWP 0x06 /* CompactPCI HotSwap */ 206 #define PCI_CAP_ID_PCIX 0x07 /* PCI-X */ 207 #define PCI_CAP_ID_HT 0x08 /* HyperTransport */ 208 #define PCI_CAP_ID_VNDR 0x09 /* Vendor-Specific */ 209 #define PCI_CAP_ID_DBG 0x0A /* Debug port */ 210 #define PCI_CAP_ID_CCRC 0x0B /* CompactPCI Central Resource Control */ 211 #define PCI_CAP_ID_SHPC 0x0C /* PCI Standard Hot-Plug Controller */ 212 #define PCI_CAP_ID_SSVID 0x0D /* Bridge subsystem vendor/device ID */ 213 #define PCI_CAP_ID_AGP3 0x0E /* AGP Target PCI-PCI bridge */ 214 #define PCI_CAP_ID_SECDEV 0x0F /* Secure Device */ 215 #define PCI_CAP_ID_EXP 0x10 /* PCI Express */ 216 #define PCI_CAP_ID_MSIX 0x11 /* MSI-X */ 217 #define PCI_CAP_ID_SATA 0x12 /* SATA Data/Index Conf. */ 218 #define PCI_CAP_ID_AF 0x13 /* PCI Advanced Features */ 219 #define PCI_CAP_ID_MAX PCI_CAP_ID_AF 220 #define PCI_CAP_LIST_NEXT 1 /* Next capability in the list */ 221 #define PCI_CAP_FLAGS 2 /* Capability defined flags (16 bits) */ 222 #define PCI_CAP_SIZEOF 4 223 224 /* Power Management Registers */ 225 226 #define PCI_PM_PMC 2 /* PM Capabilities Register */ 227 #define PCI_PM_CAP_VER_MASK 0x0007 /* Version */ 228 #define PCI_PM_CAP_PME_CLOCK 0x0008 /* PME clock required */ 229 #define PCI_PM_CAP_RESERVED 0x0010 /* Reserved field */ 230 #define PCI_PM_CAP_DSI 0x0020 /* Device specific initialization */ 231 #define PCI_PM_CAP_AUX_POWER 0x01C0 /* Auxiliary power support mask */ 232 #define PCI_PM_CAP_D1 0x0200 /* D1 power state support */ 233 #define PCI_PM_CAP_D2 0x0400 /* D2 power state support */ 234 #define PCI_PM_CAP_PME 0x0800 /* PME pin supported */ 235 #define PCI_PM_CAP_PME_MASK 0xF800 /* PME Mask of all supported states */ 236 #define PCI_PM_CAP_PME_D0 0x0800 /* PME# from D0 */ 237 #define PCI_PM_CAP_PME_D1 0x1000 /* PME# from D1 */ 238 #define PCI_PM_CAP_PME_D2 0x2000 /* PME# from D2 */ 239 #define PCI_PM_CAP_PME_D3 0x4000 /* PME# from D3 (hot) */ 240 #define PCI_PM_CAP_PME_D3cold 0x8000 /* PME# from D3 (cold) */ 241 #define PCI_PM_CAP_PME_SHIFT 11 /* Start of the PME Mask in PMC */ 242 #define PCI_PM_CTRL 4 /* PM control and status register */ 243 #define PCI_PM_CTRL_STATE_MASK 0x0003 /* Current power state (D0 to D3) */ 244 #define PCI_PM_CTRL_NO_SOFT_RESET 0x0008 /* No reset for D3hot->D0 */ 245 #define PCI_PM_CTRL_PME_ENABLE 0x0100 /* PME pin enable */ 246 #define PCI_PM_CTRL_DATA_SEL_MASK 0x1e00 /* Data select (??) */ 247 #define PCI_PM_CTRL_DATA_SCALE_MASK 0x6000 /* Data scale (??) */ 248 #define PCI_PM_CTRL_PME_STATUS 0x8000 /* PME pin status */ 249 #define PCI_PM_PPB_EXTENSIONS 6 /* PPB support extensions (??) */ 250 #define PCI_PM_PPB_B2_B3 0x40 /* Stop clock when in D3hot (??) */ 251 #define PCI_PM_BPCC_ENABLE 0x80 /* Bus power/clock control enable (??) */ 252 #define PCI_PM_DATA_REGISTER 7 /* (??) */ 253 #define PCI_PM_SIZEOF 8 254 255 /* AGP registers */ 256 257 #define PCI_AGP_VERSION 2 /* BCD version number */ 258 #define PCI_AGP_RFU 3 /* Rest of capability flags */ 259 #define PCI_AGP_STATUS 4 /* Status register */ 260 #define PCI_AGP_STATUS_RQ_MASK 0xff000000 /* Maximum number of requests - 1 */ 261 #define PCI_AGP_STATUS_SBA 0x0200 /* Sideband addressing supported */ 262 #define PCI_AGP_STATUS_64BIT 0x0020 /* 64-bit addressing supported */ 263 #define PCI_AGP_STATUS_FW 0x0010 /* FW transfers supported */ 264 #define PCI_AGP_STATUS_RATE4 0x0004 /* 4x transfer rate supported */ 265 #define PCI_AGP_STATUS_RATE2 0x0002 /* 2x transfer rate supported */ 266 #define PCI_AGP_STATUS_RATE1 0x0001 /* 1x transfer rate supported */ 267 #define PCI_AGP_COMMAND 8 /* Control register */ 268 #define PCI_AGP_COMMAND_RQ_MASK 0xff000000 /* Master: Maximum number of requests */ 269 #define PCI_AGP_COMMAND_SBA 0x0200 /* Sideband addressing enabled */ 270 #define PCI_AGP_COMMAND_AGP 0x0100 /* Allow processing of AGP transactions */ 271 #define PCI_AGP_COMMAND_64BIT 0x0020 /* Allow processing of 64-bit addresses */ 272 #define PCI_AGP_COMMAND_FW 0x0010 /* Force FW transfers */ 273 #define PCI_AGP_COMMAND_RATE4 0x0004 /* Use 4x rate */ 274 #define PCI_AGP_COMMAND_RATE2 0x0002 /* Use 2x rate */ 275 #define PCI_AGP_COMMAND_RATE1 0x0001 /* Use 1x rate */ 276 #define PCI_AGP_SIZEOF 12 277 278 /* Vital Product Data */ 279 280 #define PCI_VPD_ADDR 2 /* Address to access (15 bits!) */ 281 #define PCI_VPD_ADDR_MASK 0x7fff /* Address mask */ 282 #define PCI_VPD_ADDR_F 0x8000 /* Write 0, 1 indicates completion */ 283 #define PCI_VPD_DATA 4 /* 32-bits of data returned here */ 284 #define PCI_CAP_VPD_SIZEOF 8 285 286 /* Slot Identification */ 287 288 #define PCI_SID_ESR 2 /* Expansion Slot Register */ 289 #define PCI_SID_ESR_NSLOTS 0x1f /* Number of expansion slots available */ 290 #define PCI_SID_ESR_FIC 0x20 /* First In Chassis Flag */ 291 #define PCI_SID_CHASSIS_NR 3 /* Chassis Number */ 292 293 /* Message Signalled Interrupts registers */ 294 295 #define PCI_MSI_FLAGS 2 /* Message Control */ 296 #define PCI_MSI_FLAGS_ENABLE 0x0001 /* MSI feature enabled */ 297 #define PCI_MSI_FLAGS_QMASK 0x000e /* Maximum queue size available */ 298 #define PCI_MSI_FLAGS_QSIZE 0x0070 /* Message queue size configured */ 299 #define PCI_MSI_FLAGS_64BIT 0x0080 /* 64-bit addresses allowed */ 300 #define PCI_MSI_FLAGS_MASKBIT 0x0100 /* Per-vector masking capable */ 301 #define PCI_MSI_RFU 3 /* Rest of capability flags */ 302 #define PCI_MSI_ADDRESS_LO 4 /* Lower 32 bits */ 303 #define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */ 304 #define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */ 305 #define PCI_MSI_MASK_32 12 /* Mask bits register for 32-bit devices */ 306 #define PCI_MSI_PENDING_32 16 /* Pending intrs for 32-bit devices */ 307 #define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */ 308 #define PCI_MSI_MASK_64 16 /* Mask bits register for 64-bit devices */ 309 #define PCI_MSI_PENDING_64 20 /* Pending intrs for 64-bit devices */ 310 311 /* MSI-X registers */ 312 #define PCI_MSIX_FLAGS 2 /* Message Control */ 313 #define PCI_MSIX_FLAGS_QSIZE 0x07FF /* Table size */ 314 #define PCI_MSIX_FLAGS_MASKALL 0x4000 /* Mask all vectors for this function */ 315 #define PCI_MSIX_FLAGS_ENABLE 0x8000 /* MSI-X enable */ 316 #define PCI_MSIX_TABLE 4 /* Table offset */ 317 #define PCI_MSIX_TABLE_BIR 0x00000007 /* BAR index */ 318 #define PCI_MSIX_TABLE_OFFSET 0xfffffff8 /* Offset into specified BAR */ 319 #define PCI_MSIX_PBA 8 /* Pending Bit Array offset */ 320 #define PCI_MSIX_PBA_BIR 0x00000007 /* BAR index */ 321 #define PCI_MSIX_PBA_OFFSET 0xfffffff8 /* Offset into specified BAR */ 322 #define PCI_MSIX_FLAGS_BIRMASK PCI_MSIX_PBA_BIR /* deprecated */ 323 #define PCI_CAP_MSIX_SIZEOF 12 /* size of MSIX registers */ 324 325 /* MSI-X Table entry format */ 326 #define PCI_MSIX_ENTRY_SIZE 16 327 #define PCI_MSIX_ENTRY_LOWER_ADDR 0 328 #define PCI_MSIX_ENTRY_UPPER_ADDR 4 329 #define PCI_MSIX_ENTRY_DATA 8 330 #define PCI_MSIX_ENTRY_VECTOR_CTRL 12 331 #define PCI_MSIX_ENTRY_CTRL_MASKBIT 1 332 333 /* CompactPCI Hotswap Register */ 334 335 #define PCI_CHSWP_CSR 2 /* Control and Status Register */ 336 #define PCI_CHSWP_DHA 0x01 /* Device Hiding Arm */ 337 #define PCI_CHSWP_EIM 0x02 /* ENUM# Signal Mask */ 338 #define PCI_CHSWP_PIE 0x04 /* Pending Insert or Extract */ 339 #define PCI_CHSWP_LOO 0x08 /* LED On / Off */ 340 #define PCI_CHSWP_PI 0x30 /* Programming Interface */ 341 #define PCI_CHSWP_EXT 0x40 /* ENUM# status - extraction */ 342 #define PCI_CHSWP_INS 0x80 /* ENUM# status - insertion */ 343 344 /* PCI Advanced Feature registers */ 345 346 #define PCI_AF_LENGTH 2 347 #define PCI_AF_CAP 3 348 #define PCI_AF_CAP_TP 0x01 349 #define PCI_AF_CAP_FLR 0x02 350 #define PCI_AF_CTRL 4 351 #define PCI_AF_CTRL_FLR 0x01 352 #define PCI_AF_STATUS 5 353 #define PCI_AF_STATUS_TP 0x01 354 #define PCI_CAP_AF_SIZEOF 6 /* size of AF registers */ 355 356 /* PCI-X registers (Type 0 (non-bridge) devices) */ 357 358 #define PCI_X_CMD 2 /* Modes & Features */ 359 #define PCI_X_CMD_DPERR_E 0x0001 /* Data Parity Error Recovery Enable */ 360 #define PCI_X_CMD_ERO 0x0002 /* Enable Relaxed Ordering */ 361 #define PCI_X_CMD_READ_512 0x0000 /* 512 byte maximum read byte count */ 362 #define PCI_X_CMD_READ_1K 0x0004 /* 1Kbyte maximum read byte count */ 363 #define PCI_X_CMD_READ_2K 0x0008 /* 2Kbyte maximum read byte count */ 364 #define PCI_X_CMD_READ_4K 0x000c /* 4Kbyte maximum read byte count */ 365 #define PCI_X_CMD_MAX_READ 0x000c /* Max Memory Read Byte Count */ 366 /* Max # of outstanding split transactions */ 367 #define PCI_X_CMD_SPLIT_1 0x0000 /* Max 1 */ 368 #define PCI_X_CMD_SPLIT_2 0x0010 /* Max 2 */ 369 #define PCI_X_CMD_SPLIT_3 0x0020 /* Max 3 */ 370 #define PCI_X_CMD_SPLIT_4 0x0030 /* Max 4 */ 371 #define PCI_X_CMD_SPLIT_8 0x0040 /* Max 8 */ 372 #define PCI_X_CMD_SPLIT_12 0x0050 /* Max 12 */ 373 #define PCI_X_CMD_SPLIT_16 0x0060 /* Max 16 */ 374 #define PCI_X_CMD_SPLIT_32 0x0070 /* Max 32 */ 375 #define PCI_X_CMD_MAX_SPLIT 0x0070 /* Max Outstanding Split Transactions */ 376 #define PCI_X_CMD_VERSION(x) (((x) >> 12) & 3) /* Version */ 377 #define PCI_X_STATUS 4 /* PCI-X capabilities */ 378 #define PCI_X_STATUS_DEVFN 0x000000ff /* A copy of devfn */ 379 #define PCI_X_STATUS_BUS 0x0000ff00 /* A copy of bus nr */ 380 #define PCI_X_STATUS_64BIT 0x00010000 /* 64-bit device */ 381 #define PCI_X_STATUS_133MHZ 0x00020000 /* 133 MHz capable */ 382 #define PCI_X_STATUS_SPL_DISC 0x00040000 /* Split Completion Discarded */ 383 #define PCI_X_STATUS_UNX_SPL 0x00080000 /* Unexpected Split Completion */ 384 #define PCI_X_STATUS_COMPLEX 0x00100000 /* Device Complexity */ 385 #define PCI_X_STATUS_MAX_READ 0x00600000 /* Designed Max Memory Read Count */ 386 #define PCI_X_STATUS_MAX_SPLIT 0x03800000 /* Designed Max Outstanding Split Transactions */ 387 #define PCI_X_STATUS_MAX_CUM 0x1c000000 /* Designed Max Cumulative Read Size */ 388 #define PCI_X_STATUS_SPL_ERR 0x20000000 /* Rcvd Split Completion Error Msg */ 389 #define PCI_X_STATUS_266MHZ 0x40000000 /* 266 MHz capable */ 390 #define PCI_X_STATUS_533MHZ 0x80000000 /* 533 MHz capable */ 391 #define PCI_X_ECC_CSR 8 /* ECC control and status */ 392 #define PCI_CAP_PCIX_SIZEOF_V0 8 /* size of registers for Version 0 */ 393 #define PCI_CAP_PCIX_SIZEOF_V1 24 /* size for Version 1 */ 394 #define PCI_CAP_PCIX_SIZEOF_V2 PCI_CAP_PCIX_SIZEOF_V1 /* Same for v2 */ 395 396 /* PCI-X registers (Type 1 (bridge) devices) */ 397 398 #define PCI_X_BRIDGE_SSTATUS 2 /* Secondary Status */ 399 #define PCI_X_SSTATUS_64BIT 0x0001 /* Secondary AD interface is 64 bits */ 400 #define PCI_X_SSTATUS_133MHZ 0x0002 /* 133 MHz capable */ 401 #define PCI_X_SSTATUS_FREQ 0x03c0 /* Secondary Bus Mode and Frequency */ 402 #define PCI_X_SSTATUS_VERS 0x3000 /* PCI-X Capability Version */ 403 #define PCI_X_SSTATUS_V1 0x1000 /* Mode 2, not Mode 1 */ 404 #define PCI_X_SSTATUS_V2 0x2000 /* Mode 1 or Modes 1 and 2 */ 405 #define PCI_X_SSTATUS_266MHZ 0x4000 /* 266 MHz capable */ 406 #define PCI_X_SSTATUS_533MHZ 0x8000 /* 533 MHz capable */ 407 #define PCI_X_BRIDGE_STATUS 4 /* Bridge Status */ 408 409 /* PCI Bridge Subsystem ID registers */ 410 411 #define PCI_SSVID_VENDOR_ID 4 /* PCI Bridge subsystem vendor ID */ 412 #define PCI_SSVID_DEVICE_ID 6 /* PCI Bridge subsystem device ID */ 413 414 /* PCI Express capability registers */ 415 416 #define PCI_EXP_FLAGS 2 /* Capabilities register */ 417 #define PCI_EXP_FLAGS_VERS 0x000f /* Capability version */ 418 #define PCI_EXP_FLAGS_TYPE 0x00f0 /* Device/Port type */ 419 #define PCI_EXP_TYPE_ENDPOINT 0x0 /* Express Endpoint */ 420 #define PCI_EXP_TYPE_LEG_END 0x1 /* Legacy Endpoint */ 421 #define PCI_EXP_TYPE_ROOT_PORT 0x4 /* Root Port */ 422 #define PCI_EXP_TYPE_UPSTREAM 0x5 /* Upstream Port */ 423 #define PCI_EXP_TYPE_DOWNSTREAM 0x6 /* Downstream Port */ 424 #define PCI_EXP_TYPE_PCI_BRIDGE 0x7 /* PCIe to PCI/PCI-X Bridge */ 425 #define PCI_EXP_TYPE_PCIE_BRIDGE 0x8 /* PCI/PCI-X to PCIe Bridge */ 426 #define PCI_EXP_TYPE_RC_END 0x9 /* Root Complex Integrated Endpoint */ 427 #define PCI_EXP_TYPE_RC_EC 0xa /* Root Complex Event Collector */ 428 #define PCI_EXP_FLAGS_SLOT 0x0100 /* Slot implemented */ 429 #define PCI_EXP_FLAGS_IRQ 0x3e00 /* Interrupt message number */ 430 #define PCI_EXP_DEVCAP 4 /* Device capabilities */ 431 #define PCI_EXP_DEVCAP_PAYLOAD 0x00000007 /* Max_Payload_Size */ 432 #define PCI_EXP_DEVCAP_PHANTOM 0x00000018 /* Phantom functions */ 433 #define PCI_EXP_DEVCAP_EXT_TAG 0x00000020 /* Extended tags */ 434 #define PCI_EXP_DEVCAP_L0S 0x000001c0 /* L0s Acceptable Latency */ 435 #define PCI_EXP_DEVCAP_L1 0x00000e00 /* L1 Acceptable Latency */ 436 #define PCI_EXP_DEVCAP_ATN_BUT 0x00001000 /* Attention Button Present */ 437 #define PCI_EXP_DEVCAP_ATN_IND 0x00002000 /* Attention Indicator Present */ 438 #define PCI_EXP_DEVCAP_PWR_IND 0x00004000 /* Power Indicator Present */ 439 #define PCI_EXP_DEVCAP_RBER 0x00008000 /* Role-Based Error Reporting */ 440 #define PCI_EXP_DEVCAP_PWR_VAL 0x03fc0000 /* Slot Power Limit Value */ 441 #define PCI_EXP_DEVCAP_PWR_SCL 0x0c000000 /* Slot Power Limit Scale */ 442 #define PCI_EXP_DEVCAP_FLR 0x10000000 /* Function Level Reset */ 443 #define PCI_EXP_DEVCTL 8 /* Device Control */ 444 #define PCI_EXP_DEVCTL_CERE 0x0001 /* Correctable Error Reporting En. */ 445 #define PCI_EXP_DEVCTL_NFERE 0x0002 /* Non-Fatal Error Reporting Enable */ 446 #define PCI_EXP_DEVCTL_FERE 0x0004 /* Fatal Error Reporting Enable */ 447 #define PCI_EXP_DEVCTL_URRE 0x0008 /* Unsupported Request Reporting En. */ 448 #define PCI_EXP_DEVCTL_RELAX_EN 0x0010 /* Enable relaxed ordering */ 449 #define PCI_EXP_DEVCTL_PAYLOAD 0x00e0 /* Max_Payload_Size */ 450 #define PCI_EXP_DEVCTL_EXT_TAG 0x0100 /* Extended Tag Field Enable */ 451 #define PCI_EXP_DEVCTL_PHANTOM 0x0200 /* Phantom Functions Enable */ 452 #define PCI_EXP_DEVCTL_AUX_PME 0x0400 /* Auxiliary Power PM Enable */ 453 #define PCI_EXP_DEVCTL_NOSNOOP_EN 0x0800 /* Enable No Snoop */ 454 #define PCI_EXP_DEVCTL_READRQ 0x7000 /* Max_Read_Request_Size */ 455 #define PCI_EXP_DEVCTL_READRQ_128B 0x0000 /* 128 Bytes */ 456 #define PCI_EXP_DEVCTL_READRQ_256B 0x1000 /* 256 Bytes */ 457 #define PCI_EXP_DEVCTL_READRQ_512B 0x2000 /* 512 Bytes */ 458 #define PCI_EXP_DEVCTL_READRQ_1024B 0x3000 /* 1024 Bytes */ 459 #define PCI_EXP_DEVCTL_BCR_FLR 0x8000 /* Bridge Configuration Retry / FLR */ 460 #define PCI_EXP_DEVSTA 10 /* Device Status */ 461 #define PCI_EXP_DEVSTA_CED 0x0001 /* Correctable Error Detected */ 462 #define PCI_EXP_DEVSTA_NFED 0x0002 /* Non-Fatal Error Detected */ 463 #define PCI_EXP_DEVSTA_FED 0x0004 /* Fatal Error Detected */ 464 #define PCI_EXP_DEVSTA_URD 0x0008 /* Unsupported Request Detected */ 465 #define PCI_EXP_DEVSTA_AUXPD 0x0010 /* AUX Power Detected */ 466 #define PCI_EXP_DEVSTA_TRPND 0x0020 /* Transactions Pending */ 467 #define PCI_EXP_LNKCAP 12 /* Link Capabilities */ 468 #define PCI_EXP_LNKCAP_SLS 0x0000000f /* Supported Link Speeds */ 469 #define PCI_EXP_LNKCAP_SLS_2_5GB 0x00000001 /* LNKCAP2 SLS Vector bit 0 */ 470 #define PCI_EXP_LNKCAP_SLS_5_0GB 0x00000002 /* LNKCAP2 SLS Vector bit 1 */ 471 #define PCI_EXP_LNKCAP_MLW 0x000003f0 /* Maximum Link Width */ 472 #define PCI_EXP_LNKCAP_ASPMS 0x00000c00 /* ASPM Support */ 473 #define PCI_EXP_LNKCAP_L0SEL 0x00007000 /* L0s Exit Latency */ 474 #define PCI_EXP_LNKCAP_L1EL 0x00038000 /* L1 Exit Latency */ 475 #define PCI_EXP_LNKCAP_CLKPM 0x00040000 /* Clock Power Management */ 476 #define PCI_EXP_LNKCAP_SDERC 0x00080000 /* Surprise Down Error Reporting Capable */ 477 #define PCI_EXP_LNKCAP_DLLLARC 0x00100000 /* Data Link Layer Link Active Reporting Capable */ 478 #define PCI_EXP_LNKCAP_LBNC 0x00200000 /* Link Bandwidth Notification Capability */ 479 #define PCI_EXP_LNKCAP_PN 0xff000000 /* Port Number */ 480 #define PCI_EXP_LNKCTL 16 /* Link Control */ 481 #define PCI_EXP_LNKCTL_ASPMC 0x0003 /* ASPM Control */ 482 #define PCI_EXP_LNKCTL_ASPM_L0S 0x0001 /* L0s Enable */ 483 #define PCI_EXP_LNKCTL_ASPM_L1 0x0002 /* L1 Enable */ 484 #define PCI_EXP_LNKCTL_RCB 0x0008 /* Read Completion Boundary */ 485 #define PCI_EXP_LNKCTL_LD 0x0010 /* Link Disable */ 486 #define PCI_EXP_LNKCTL_RL 0x0020 /* Retrain Link */ 487 #define PCI_EXP_LNKCTL_CCC 0x0040 /* Common Clock Configuration */ 488 #define PCI_EXP_LNKCTL_ES 0x0080 /* Extended Synch */ 489 #define PCI_EXP_LNKCTL_CLKREQ_EN 0x0100 /* Enable clkreq */ 490 #define PCI_EXP_LNKCTL_HAWD 0x0200 /* Hardware Autonomous Width Disable */ 491 #define PCI_EXP_LNKCTL_LBMIE 0x0400 /* Link Bandwidth Management Interrupt Enable */ 492 #define PCI_EXP_LNKCTL_LABIE 0x0800 /* Link Autonomous Bandwidth Interrupt Enable */ 493 #define PCI_EXP_LNKSTA 18 /* Link Status */ 494 #define PCI_EXP_LNKSTA_CLS 0x000f /* Current Link Speed */ 495 #define PCI_EXP_LNKSTA_CLS_2_5GB 0x0001 /* Current Link Speed 2.5GT/s */ 496 #define PCI_EXP_LNKSTA_CLS_5_0GB 0x0002 /* Current Link Speed 5.0GT/s */ 497 #define PCI_EXP_LNKSTA_CLS_8_0GB 0x0003 /* Current Link Speed 8.0GT/s */ 498 #define PCI_EXP_LNKSTA_NLW 0x03f0 /* Negotiated Link Width */ 499 #define PCI_EXP_LNKSTA_NLW_X1 0x0010 /* Current Link Width x1 */ 500 #define PCI_EXP_LNKSTA_NLW_X2 0x0020 /* Current Link Width x2 */ 501 #define PCI_EXP_LNKSTA_NLW_X4 0x0040 /* Current Link Width x4 */ 502 #define PCI_EXP_LNKSTA_NLW_X8 0x0080 /* Current Link Width x8 */ 503 #define PCI_EXP_LNKSTA_NLW_SHIFT 4 /* start of NLW mask in link status */ 504 #define PCI_EXP_LNKSTA_LT 0x0800 /* Link Training */ 505 #define PCI_EXP_LNKSTA_SLC 0x1000 /* Slot Clock Configuration */ 506 #define PCI_EXP_LNKSTA_DLLLA 0x2000 /* Data Link Layer Link Active */ 507 #define PCI_EXP_LNKSTA_LBMS 0x4000 /* Link Bandwidth Management Status */ 508 #define PCI_EXP_LNKSTA_LABS 0x8000 /* Link Autonomous Bandwidth Status */ 509 #define PCI_CAP_EXP_ENDPOINT_SIZEOF_V1 20 /* v1 endpoints end here */ 510 #define PCI_EXP_SLTCAP 20 /* Slot Capabilities */ 511 #define PCI_EXP_SLTCAP_ABP 0x00000001 /* Attention Button Present */ 512 #define PCI_EXP_SLTCAP_PCP 0x00000002 /* Power Controller Present */ 513 #define PCI_EXP_SLTCAP_MRLSP 0x00000004 /* MRL Sensor Present */ 514 #define PCI_EXP_SLTCAP_AIP 0x00000008 /* Attention Indicator Present */ 515 #define PCI_EXP_SLTCAP_PIP 0x00000010 /* Power Indicator Present */ 516 #define PCI_EXP_SLTCAP_HPS 0x00000020 /* Hot-Plug Surprise */ 517 #define PCI_EXP_SLTCAP_HPC 0x00000040 /* Hot-Plug Capable */ 518 #define PCI_EXP_SLTCAP_SPLV 0x00007f80 /* Slot Power Limit Value */ 519 #define PCI_EXP_SLTCAP_SPLS 0x00018000 /* Slot Power Limit Scale */ 520 #define PCI_EXP_SLTCAP_EIP 0x00020000 /* Electromechanical Interlock Present */ 521 #define PCI_EXP_SLTCAP_NCCS 0x00040000 /* No Command Completed Support */ 522 #define PCI_EXP_SLTCAP_PSN 0xfff80000 /* Physical Slot Number */ 523 #define PCI_EXP_SLTCTL 24 /* Slot Control */ 524 #define PCI_EXP_SLTCTL_ABPE 0x0001 /* Attention Button Pressed Enable */ 525 #define PCI_EXP_SLTCTL_PFDE 0x0002 /* Power Fault Detected Enable */ 526 #define PCI_EXP_SLTCTL_MRLSCE 0x0004 /* MRL Sensor Changed Enable */ 527 #define PCI_EXP_SLTCTL_PDCE 0x0008 /* Presence Detect Changed Enable */ 528 #define PCI_EXP_SLTCTL_CCIE 0x0010 /* Command Completed Interrupt Enable */ 529 #define PCI_EXP_SLTCTL_HPIE 0x0020 /* Hot-Plug Interrupt Enable */ 530 #define PCI_EXP_SLTCTL_AIC 0x00c0 /* Attention Indicator Control */ 531 #define PCI_EXP_SLTCTL_ATTN_IND_ON 0x0040 /* Attention Indicator on */ 532 #define PCI_EXP_SLTCTL_ATTN_IND_BLINK 0x0080 /* Attention Indicator blinking */ 533 #define PCI_EXP_SLTCTL_ATTN_IND_OFF 0x00c0 /* Attention Indicator off */ 534 #define PCI_EXP_SLTCTL_PIC 0x0300 /* Power Indicator Control */ 535 #define PCI_EXP_SLTCTL_PWR_IND_ON 0x0100 /* Power Indicator on */ 536 #define PCI_EXP_SLTCTL_PWR_IND_BLINK 0x0200 /* Power Indicator blinking */ 537 #define PCI_EXP_SLTCTL_PWR_IND_OFF 0x0300 /* Power Indicator off */ 538 #define PCI_EXP_SLTCTL_PCC 0x0400 /* Power Controller Control */ 539 #define PCI_EXP_SLTCTL_PWR_ON 0x0000 /* Power On */ 540 #define PCI_EXP_SLTCTL_PWR_OFF 0x0400 /* Power Off */ 541 #define PCI_EXP_SLTCTL_EIC 0x0800 /* Electromechanical Interlock Control */ 542 #define PCI_EXP_SLTCTL_DLLSCE 0x1000 /* Data Link Layer State Changed Enable */ 543 #define PCI_EXP_SLTSTA 26 /* Slot Status */ 544 #define PCI_EXP_SLTSTA_ABP 0x0001 /* Attention Button Pressed */ 545 #define PCI_EXP_SLTSTA_PFD 0x0002 /* Power Fault Detected */ 546 #define PCI_EXP_SLTSTA_MRLSC 0x0004 /* MRL Sensor Changed */ 547 #define PCI_EXP_SLTSTA_PDC 0x0008 /* Presence Detect Changed */ 548 #define PCI_EXP_SLTSTA_CC 0x0010 /* Command Completed */ 549 #define PCI_EXP_SLTSTA_MRLSS 0x0020 /* MRL Sensor State */ 550 #define PCI_EXP_SLTSTA_PDS 0x0040 /* Presence Detect State */ 551 #define PCI_EXP_SLTSTA_EIS 0x0080 /* Electromechanical Interlock Status */ 552 #define PCI_EXP_SLTSTA_DLLSC 0x0100 /* Data Link Layer State Changed */ 553 #define PCI_EXP_RTCTL 28 /* Root Control */ 554 #define PCI_EXP_RTCTL_SECEE 0x0001 /* System Error on Correctable Error */ 555 #define PCI_EXP_RTCTL_SENFEE 0x0002 /* System Error on Non-Fatal Error */ 556 #define PCI_EXP_RTCTL_SEFEE 0x0004 /* System Error on Fatal Error */ 557 #define PCI_EXP_RTCTL_PMEIE 0x0008 /* PME Interrupt Enable */ 558 #define PCI_EXP_RTCTL_CRSSVE 0x0010 /* CRS Software Visibility Enable */ 559 #define PCI_EXP_RTCAP 30 /* Root Capabilities */ 560 #define PCI_EXP_RTCAP_CRSVIS 0x0001 /* CRS Software Visibility capability */ 561 #define PCI_EXP_RTSTA 32 /* Root Status */ 562 #define PCI_EXP_RTSTA_PME 0x00010000 /* PME status */ 563 #define PCI_EXP_RTSTA_PENDING 0x00020000 /* PME pending */ 564 /* 565 * The Device Capabilities 2, Device Status 2, Device Control 2, 566 * Link Capabilities 2, Link Status 2, Link Control 2, 567 * Slot Capabilities 2, Slot Status 2, and Slot Control 2 registers 568 * are only present on devices with PCIe Capability version 2. 569 * Use pcie_capability_read_word() and similar interfaces to use them 570 * safely. 571 */ 572 #define PCI_EXP_DEVCAP2 36 /* Device Capabilities 2 */ 573 #define PCI_EXP_DEVCAP2_ARI 0x00000020 /* Alternative Routing-ID */ 574 #define PCI_EXP_DEVCAP2_LTR 0x00000800 /* Latency tolerance reporting */ 575 #define PCI_EXP_DEVCAP2_OBFF_MASK 0x000c0000 /* OBFF support mechanism */ 576 #define PCI_EXP_DEVCAP2_OBFF_MSG 0x00040000 /* New message signaling */ 577 #define PCI_EXP_DEVCAP2_OBFF_WAKE 0x00080000 /* Re-use WAKE# for OBFF */ 578 #define PCI_EXP_DEVCTL2 40 /* Device Control 2 */ 579 #define PCI_EXP_DEVCTL2_COMP_TIMEOUT 0x000f /* Completion Timeout Value */ 580 #define PCI_EXP_DEVCTL2_ARI 0x0020 /* Alternative Routing-ID */ 581 #define PCI_EXP_DEVCTL2_IDO_REQ_EN 0x0100 /* Allow IDO for requests */ 582 #define PCI_EXP_DEVCTL2_IDO_CMP_EN 0x0200 /* Allow IDO for completions */ 583 #define PCI_EXP_DEVCTL2_LTR_EN 0x0400 /* Enable LTR mechanism */ 584 #define PCI_EXP_DEVCTL2_OBFF_MSGA_EN 0x2000 /* Enable OBFF Message type A */ 585 #define PCI_EXP_DEVCTL2_OBFF_MSGB_EN 0x4000 /* Enable OBFF Message type B */ 586 #define PCI_EXP_DEVCTL2_OBFF_WAKE_EN 0x6000 /* OBFF using WAKE# signaling */ 587 #define PCI_EXP_DEVSTA2 42 /* Device Status 2 */ 588 #define PCI_CAP_EXP_ENDPOINT_SIZEOF_V2 44 /* v2 endpoints end here */ 589 #define PCI_EXP_LNKCAP2 44 /* Link Capabilities 2 */ 590 #define PCI_EXP_LNKCAP2_SLS_2_5GB 0x00000002 /* Supported Speed 2.5GT/s */ 591 #define PCI_EXP_LNKCAP2_SLS_5_0GB 0x00000004 /* Supported Speed 5.0GT/s */ 592 #define PCI_EXP_LNKCAP2_SLS_8_0GB 0x00000008 /* Supported Speed 8.0GT/s */ 593 #define PCI_EXP_LNKCAP2_CROSSLINK 0x00000100 /* Crosslink supported */ 594 #define PCI_EXP_LNKCTL2 48 /* Link Control 2 */ 595 #define PCI_EXP_LNKSTA2 50 /* Link Status 2 */ 596 #define PCI_EXP_SLTCAP2 52 /* Slot Capabilities 2 */ 597 #define PCI_EXP_SLTCTL2 56 /* Slot Control 2 */ 598 #define PCI_EXP_SLTSTA2 58 /* Slot Status 2 */ 599 600 /* Extended Capabilities (PCI-X 2.0 and Express) */ 601 #define PCI_EXT_CAP_ID(header) (header & 0x0000ffff) 602 #define PCI_EXT_CAP_VER(header) ((header >> 16) & 0xf) 603 #define PCI_EXT_CAP_NEXT(header) ((header >> 20) & 0xffc) 604 605 #define PCI_EXT_CAP_ID_ERR 0x01 /* Advanced Error Reporting */ 606 #define PCI_EXT_CAP_ID_VC 0x02 /* Virtual Channel Capability */ 607 #define PCI_EXT_CAP_ID_DSN 0x03 /* Device Serial Number */ 608 #define PCI_EXT_CAP_ID_PWR 0x04 /* Power Budgeting */ 609 #define PCI_EXT_CAP_ID_RCLD 0x05 /* Root Complex Link Declaration */ 610 #define PCI_EXT_CAP_ID_RCILC 0x06 /* Root Complex Internal Link Control */ 611 #define PCI_EXT_CAP_ID_RCEC 0x07 /* Root Complex Event Collector */ 612 #define PCI_EXT_CAP_ID_MFVC 0x08 /* Multi-Function VC Capability */ 613 #define PCI_EXT_CAP_ID_VC9 0x09 /* same as _VC */ 614 #define PCI_EXT_CAP_ID_RCRB 0x0A /* Root Complex RB? */ 615 #define PCI_EXT_CAP_ID_VNDR 0x0B /* Vendor-Specific */ 616 #define PCI_EXT_CAP_ID_CAC 0x0C /* Config Access - obsolete */ 617 #define PCI_EXT_CAP_ID_ACS 0x0D /* Access Control Services */ 618 #define PCI_EXT_CAP_ID_ARI 0x0E /* Alternate Routing ID */ 619 #define PCI_EXT_CAP_ID_ATS 0x0F /* Address Translation Services */ 620 #define PCI_EXT_CAP_ID_SRIOV 0x10 /* Single Root I/O Virtualization */ 621 #define PCI_EXT_CAP_ID_MRIOV 0x11 /* Multi Root I/O Virtualization */ 622 #define PCI_EXT_CAP_ID_MCAST 0x12 /* Multicast */ 623 #define PCI_EXT_CAP_ID_PRI 0x13 /* Page Request Interface */ 624 #define PCI_EXT_CAP_ID_AMD_XXX 0x14 /* Reserved for AMD */ 625 #define PCI_EXT_CAP_ID_REBAR 0x15 /* Resizable BAR */ 626 #define PCI_EXT_CAP_ID_DPA 0x16 /* Dynamic Power Allocation */ 627 #define PCI_EXT_CAP_ID_TPH 0x17 /* TPH Requester */ 628 #define PCI_EXT_CAP_ID_LTR 0x18 /* Latency Tolerance Reporting */ 629 #define PCI_EXT_CAP_ID_SECPCI 0x19 /* Secondary PCIe Capability */ 630 #define PCI_EXT_CAP_ID_PMUX 0x1A /* Protocol Multiplexing */ 631 #define PCI_EXT_CAP_ID_PASID 0x1B /* Process Address Space ID */ 632 #define PCI_EXT_CAP_ID_MAX PCI_EXT_CAP_ID_PASID 633 634 #define PCI_EXT_CAP_DSN_SIZEOF 12 635 #define PCI_EXT_CAP_MCAST_ENDPOINT_SIZEOF 40 636 637 /* Advanced Error Reporting */ 638 #define PCI_ERR_UNCOR_STATUS 4 /* Uncorrectable Error Status */ 639 #define PCI_ERR_UNC_UND 0x00000001 /* Undefined */ 640 #define PCI_ERR_UNC_DLP 0x00000010 /* Data Link Protocol */ 641 #define PCI_ERR_UNC_SURPDN 0x00000020 /* Surprise Down */ 642 #define PCI_ERR_UNC_POISON_TLP 0x00001000 /* Poisoned TLP */ 643 #define PCI_ERR_UNC_FCP 0x00002000 /* Flow Control Protocol */ 644 #define PCI_ERR_UNC_COMP_TIME 0x00004000 /* Completion Timeout */ 645 #define PCI_ERR_UNC_COMP_ABORT 0x00008000 /* Completer Abort */ 646 #define PCI_ERR_UNC_UNX_COMP 0x00010000 /* Unexpected Completion */ 647 #define PCI_ERR_UNC_RX_OVER 0x00020000 /* Receiver Overflow */ 648 #define PCI_ERR_UNC_MALF_TLP 0x00040000 /* Malformed TLP */ 649 #define PCI_ERR_UNC_ECRC 0x00080000 /* ECRC Error Status */ 650 #define PCI_ERR_UNC_UNSUP 0x00100000 /* Unsupported Request */ 651 #define PCI_ERR_UNC_ACSV 0x00200000 /* ACS Violation */ 652 #define PCI_ERR_UNC_INTN 0x00400000 /* internal error */ 653 #define PCI_ERR_UNC_MCBTLP 0x00800000 /* MC blocked TLP */ 654 #define PCI_ERR_UNC_ATOMEG 0x01000000 /* Atomic egress blocked */ 655 #define PCI_ERR_UNC_TLPPRE 0x02000000 /* TLP prefix blocked */ 656 #define PCI_ERR_UNCOR_MASK 8 /* Uncorrectable Error Mask */ 657 /* Same bits as above */ 658 #define PCI_ERR_UNCOR_SEVER 12 /* Uncorrectable Error Severity */ 659 /* Same bits as above */ 660 #define PCI_ERR_COR_STATUS 16 /* Correctable Error Status */ 661 #define PCI_ERR_COR_RCVR 0x00000001 /* Receiver Error Status */ 662 #define PCI_ERR_COR_BAD_TLP 0x00000040 /* Bad TLP Status */ 663 #define PCI_ERR_COR_BAD_DLLP 0x00000080 /* Bad DLLP Status */ 664 #define PCI_ERR_COR_REP_ROLL 0x00000100 /* REPLAY_NUM Rollover */ 665 #define PCI_ERR_COR_REP_TIMER 0x00001000 /* Replay Timer Timeout */ 666 #define PCI_ERR_COR_ADV_NFAT 0x00002000 /* Advisory Non-Fatal */ 667 #define PCI_ERR_COR_INTERNAL 0x00004000 /* Corrected Internal */ 668 #define PCI_ERR_COR_LOG_OVER 0x00008000 /* Header Log Overflow */ 669 #define PCI_ERR_COR_MASK 20 /* Correctable Error Mask */ 670 /* Same bits as above */ 671 #define PCI_ERR_CAP 24 /* Advanced Error Capabilities */ 672 #define PCI_ERR_CAP_FEP(x) ((x) & 31) /* First Error Pointer */ 673 #define PCI_ERR_CAP_ECRC_GENC 0x00000020 /* ECRC Generation Capable */ 674 #define PCI_ERR_CAP_ECRC_GENE 0x00000040 /* ECRC Generation Enable */ 675 #define PCI_ERR_CAP_ECRC_CHKC 0x00000080 /* ECRC Check Capable */ 676 #define PCI_ERR_CAP_ECRC_CHKE 0x00000100 /* ECRC Check Enable */ 677 #define PCI_ERR_HEADER_LOG 28 /* Header Log Register (16 bytes) */ 678 #define PCI_ERR_ROOT_COMMAND 44 /* Root Error Command */ 679 /* Correctable Err Reporting Enable */ 680 #define PCI_ERR_ROOT_CMD_COR_EN 0x00000001 681 /* Non-fatal Err Reporting Enable */ 682 #define PCI_ERR_ROOT_CMD_NONFATAL_EN 0x00000002 683 /* Fatal Err Reporting Enable */ 684 #define PCI_ERR_ROOT_CMD_FATAL_EN 0x00000004 685 #define PCI_ERR_ROOT_STATUS 48 686 #define PCI_ERR_ROOT_COR_RCV 0x00000001 /* ERR_COR Received */ 687 /* Multi ERR_COR Received */ 688 #define PCI_ERR_ROOT_MULTI_COR_RCV 0x00000002 689 /* ERR_FATAL/NONFATAL Received */ 690 #define PCI_ERR_ROOT_UNCOR_RCV 0x00000004 691 /* Multi ERR_FATAL/NONFATAL Received */ 692 #define PCI_ERR_ROOT_MULTI_UNCOR_RCV 0x00000008 693 #define PCI_ERR_ROOT_FIRST_FATAL 0x00000010 /* First Fatal */ 694 #define PCI_ERR_ROOT_NONFATAL_RCV 0x00000020 /* Non-Fatal Received */ 695 #define PCI_ERR_ROOT_FATAL_RCV 0x00000040 /* Fatal Received */ 696 #define PCI_ERR_ROOT_ERR_SRC 52 /* Error Source Identification */ 697 698 /* Virtual Channel */ 699 #define PCI_VC_PORT_CAP1 4 700 #define PCI_VC_CAP1_EVCC 0x00000007 /* extended VC count */ 701 #define PCI_VC_CAP1_LPEVCC 0x00000070 /* low prio extended VC count */ 702 #define PCI_VC_CAP1_ARB_SIZE 0x00000c00 703 #define PCI_VC_PORT_CAP2 8 704 #define PCI_VC_CAP2_32_PHASE 0x00000002 705 #define PCI_VC_CAP2_64_PHASE 0x00000004 706 #define PCI_VC_CAP2_128_PHASE 0x00000008 707 #define PCI_VC_CAP2_ARB_OFF 0xff000000 708 #define PCI_VC_PORT_CTRL 12 709 #define PCI_VC_PORT_CTRL_LOAD_TABLE 0x00000001 710 #define PCI_VC_PORT_STATUS 14 711 #define PCI_VC_PORT_STATUS_TABLE 0x00000001 712 #define PCI_VC_RES_CAP 16 713 #define PCI_VC_RES_CAP_32_PHASE 0x00000002 714 #define PCI_VC_RES_CAP_64_PHASE 0x00000004 715 #define PCI_VC_RES_CAP_128_PHASE 0x00000008 716 #define PCI_VC_RES_CAP_128_PHASE_TB 0x00000010 717 #define PCI_VC_RES_CAP_256_PHASE 0x00000020 718 #define PCI_VC_RES_CAP_ARB_OFF 0xff000000 719 #define PCI_VC_RES_CTRL 20 720 #define PCI_VC_RES_CTRL_LOAD_TABLE 0x00010000 721 #define PCI_VC_RES_CTRL_ARB_SELECT 0x000e0000 722 #define PCI_VC_RES_CTRL_ID 0x07000000 723 #define PCI_VC_RES_CTRL_ENABLE 0x80000000 724 #define PCI_VC_RES_STATUS 26 725 #define PCI_VC_RES_STATUS_TABLE 0x00000001 726 #define PCI_VC_RES_STATUS_NEGO 0x00000002 727 #define PCI_CAP_VC_BASE_SIZEOF 0x10 728 #define PCI_CAP_VC_PER_VC_SIZEOF 0x0C 729 730 /* Power Budgeting */ 731 #define PCI_PWR_DSR 4 /* Data Select Register */ 732 #define PCI_PWR_DATA 8 /* Data Register */ 733 #define PCI_PWR_DATA_BASE(x) ((x) & 0xff) /* Base Power */ 734 #define PCI_PWR_DATA_SCALE(x) (((x) >> 8) & 3) /* Data Scale */ 735 #define PCI_PWR_DATA_PM_SUB(x) (((x) >> 10) & 7) /* PM Sub State */ 736 #define PCI_PWR_DATA_PM_STATE(x) (((x) >> 13) & 3) /* PM State */ 737 #define PCI_PWR_DATA_TYPE(x) (((x) >> 15) & 7) /* Type */ 738 #define PCI_PWR_DATA_RAIL(x) (((x) >> 18) & 7) /* Power Rail */ 739 #define PCI_PWR_CAP 12 /* Capability */ 740 #define PCI_PWR_CAP_BUDGET(x) ((x) & 1) /* Included in system budget */ 741 #define PCI_EXT_CAP_PWR_SIZEOF 16 742 743 /* Vendor-Specific (VSEC, PCI_EXT_CAP_ID_VNDR) */ 744 #define PCI_VNDR_HEADER 4 /* Vendor-Specific Header */ 745 #define PCI_VNDR_HEADER_ID(x) ((x) & 0xffff) 746 #define PCI_VNDR_HEADER_REV(x) (((x) >> 16) & 0xf) 747 #define PCI_VNDR_HEADER_LEN(x) (((x) >> 20) & 0xfff) 748 749 /* 750 * HyperTransport sub capability types 751 * 752 * Unfortunately there are both 3 bit and 5 bit capability types defined 753 * in the HT spec, catering for that is a little messy. You probably don't 754 * want to use these directly, just use pci_find_ht_capability() and it 755 * will do the right thing for you. 756 */ 757 #define HT_3BIT_CAP_MASK 0xE0 758 #define HT_CAPTYPE_SLAVE 0x00 /* Slave/Primary link configuration */ 759 #define HT_CAPTYPE_HOST 0x20 /* Host/Secondary link configuration */ 760 761 #define HT_5BIT_CAP_MASK 0xF8 762 #define HT_CAPTYPE_IRQ 0x80 /* IRQ Configuration */ 763 #define HT_CAPTYPE_REMAPPING_40 0xA0 /* 40 bit address remapping */ 764 #define HT_CAPTYPE_REMAPPING_64 0xA2 /* 64 bit address remapping */ 765 #define HT_CAPTYPE_UNITID_CLUMP 0x90 /* Unit ID clumping */ 766 #define HT_CAPTYPE_EXTCONF 0x98 /* Extended Configuration Space Access */ 767 #define HT_CAPTYPE_MSI_MAPPING 0xA8 /* MSI Mapping Capability */ 768 #define HT_MSI_FLAGS 0x02 /* Offset to flags */ 769 #define HT_MSI_FLAGS_ENABLE 0x1 /* Mapping enable */ 770 #define HT_MSI_FLAGS_FIXED 0x2 /* Fixed mapping only */ 771 #define HT_MSI_FIXED_ADDR 0x00000000FEE00000ULL /* Fixed addr */ 772 #define HT_MSI_ADDR_LO 0x04 /* Offset to low addr bits */ 773 #define HT_MSI_ADDR_LO_MASK 0xFFF00000 /* Low address bit mask */ 774 #define HT_MSI_ADDR_HI 0x08 /* Offset to high addr bits */ 775 #define HT_CAPTYPE_DIRECT_ROUTE 0xB0 /* Direct routing configuration */ 776 #define HT_CAPTYPE_VCSET 0xB8 /* Virtual Channel configuration */ 777 #define HT_CAPTYPE_ERROR_RETRY 0xC0 /* Retry on error configuration */ 778 #define HT_CAPTYPE_GEN3 0xD0 /* Generation 3 HyperTransport configuration */ 779 #define HT_CAPTYPE_PM 0xE0 /* HyperTransport power management configuration */ 780 #define HT_CAP_SIZEOF_LONG 28 /* slave & primary */ 781 #define HT_CAP_SIZEOF_SHORT 24 /* host & secondary */ 782 783 /* Alternative Routing-ID Interpretation */ 784 #define PCI_ARI_CAP 0x04 /* ARI Capability Register */ 785 #define PCI_ARI_CAP_MFVC 0x0001 /* MFVC Function Groups Capability */ 786 #define PCI_ARI_CAP_ACS 0x0002 /* ACS Function Groups Capability */ 787 #define PCI_ARI_CAP_NFN(x) (((x) >> 8) & 0xff) /* Next Function Number */ 788 #define PCI_ARI_CTRL 0x06 /* ARI Control Register */ 789 #define PCI_ARI_CTRL_MFVC 0x0001 /* MFVC Function Groups Enable */ 790 #define PCI_ARI_CTRL_ACS 0x0002 /* ACS Function Groups Enable */ 791 #define PCI_ARI_CTRL_FG(x) (((x) >> 4) & 7) /* Function Group */ 792 #define PCI_EXT_CAP_ARI_SIZEOF 8 793 794 /* Address Translation Service */ 795 #define PCI_ATS_CAP 0x04 /* ATS Capability Register */ 796 #define PCI_ATS_CAP_QDEP(x) ((x) & 0x1f) /* Invalidate Queue Depth */ 797 #define PCI_ATS_MAX_QDEP 32 /* Max Invalidate Queue Depth */ 798 #define PCI_ATS_CTRL 0x06 /* ATS Control Register */ 799 #define PCI_ATS_CTRL_ENABLE 0x8000 /* ATS Enable */ 800 #define PCI_ATS_CTRL_STU(x) ((x) & 0x1f) /* Smallest Translation Unit */ 801 #define PCI_ATS_MIN_STU 12 /* shift of minimum STU block */ 802 #define PCI_EXT_CAP_ATS_SIZEOF 8 803 804 /* Page Request Interface */ 805 #define PCI_PRI_CTRL 0x04 /* PRI control register */ 806 #define PCI_PRI_CTRL_ENABLE 0x01 /* Enable */ 807 #define PCI_PRI_CTRL_RESET 0x02 /* Reset */ 808 #define PCI_PRI_STATUS 0x06 /* PRI status register */ 809 #define PCI_PRI_STATUS_RF 0x001 /* Response Failure */ 810 #define PCI_PRI_STATUS_UPRGI 0x002 /* Unexpected PRG index */ 811 #define PCI_PRI_STATUS_STOPPED 0x100 /* PRI Stopped */ 812 #define PCI_PRI_MAX_REQ 0x08 /* PRI max reqs supported */ 813 #define PCI_PRI_ALLOC_REQ 0x0c /* PRI max reqs allowed */ 814 #define PCI_EXT_CAP_PRI_SIZEOF 16 815 816 /* Process Address Space ID */ 817 #define PCI_PASID_CAP 0x04 /* PASID feature register */ 818 #define PCI_PASID_CAP_EXEC 0x02 /* Exec permissions Supported */ 819 #define PCI_PASID_CAP_PRIV 0x04 /* Privilege Mode Supported */ 820 #define PCI_PASID_CTRL 0x06 /* PASID control register */ 821 #define PCI_PASID_CTRL_ENABLE 0x01 /* Enable bit */ 822 #define PCI_PASID_CTRL_EXEC 0x02 /* Exec permissions Enable */ 823 #define PCI_PASID_CTRL_PRIV 0x04 /* Privilege Mode Enable */ 824 #define PCI_EXT_CAP_PASID_SIZEOF 8 825 826 /* Single Root I/O Virtualization */ 827 #define PCI_SRIOV_CAP 0x04 /* SR-IOV Capabilities */ 828 #define PCI_SRIOV_CAP_VFM 0x01 /* VF Migration Capable */ 829 #define PCI_SRIOV_CAP_INTR(x) ((x) >> 21) /* Interrupt Message Number */ 830 #define PCI_SRIOV_CTRL 0x08 /* SR-IOV Control */ 831 #define PCI_SRIOV_CTRL_VFE 0x01 /* VF Enable */ 832 #define PCI_SRIOV_CTRL_VFM 0x02 /* VF Migration Enable */ 833 #define PCI_SRIOV_CTRL_INTR 0x04 /* VF Migration Interrupt Enable */ 834 #define PCI_SRIOV_CTRL_MSE 0x08 /* VF Memory Space Enable */ 835 #define PCI_SRIOV_CTRL_ARI 0x10 /* ARI Capable Hierarchy */ 836 #define PCI_SRIOV_STATUS 0x0a /* SR-IOV Status */ 837 #define PCI_SRIOV_STATUS_VFM 0x01 /* VF Migration Status */ 838 #define PCI_SRIOV_INITIAL_VF 0x0c /* Initial VFs */ 839 #define PCI_SRIOV_TOTAL_VF 0x0e /* Total VFs */ 840 #define PCI_SRIOV_NUM_VF 0x10 /* Number of VFs */ 841 #define PCI_SRIOV_FUNC_LINK 0x12 /* Function Dependency Link */ 842 #define PCI_SRIOV_VF_OFFSET 0x14 /* First VF Offset */ 843 #define PCI_SRIOV_VF_STRIDE 0x16 /* Following VF Stride */ 844 #define PCI_SRIOV_VF_DID 0x1a /* VF Device ID */ 845 #define PCI_SRIOV_SUP_PGSIZE 0x1c /* Supported Page Sizes */ 846 #define PCI_SRIOV_SYS_PGSIZE 0x20 /* System Page Size */ 847 #define PCI_SRIOV_BAR 0x24 /* VF BAR0 */ 848 #define PCI_SRIOV_NUM_BARS 6 /* Number of VF BARs */ 849 #define PCI_SRIOV_VFM 0x3c /* VF Migration State Array Offset*/ 850 #define PCI_SRIOV_VFM_BIR(x) ((x) & 7) /* State BIR */ 851 #define PCI_SRIOV_VFM_OFFSET(x) ((x) & ~7) /* State Offset */ 852 #define PCI_SRIOV_VFM_UA 0x0 /* Inactive.Unavailable */ 853 #define PCI_SRIOV_VFM_MI 0x1 /* Dormant.MigrateIn */ 854 #define PCI_SRIOV_VFM_MO 0x2 /* Active.MigrateOut */ 855 #define PCI_SRIOV_VFM_AV 0x3 /* Active.Available */ 856 #define PCI_EXT_CAP_SRIOV_SIZEOF 64 857 858 #define PCI_LTR_MAX_SNOOP_LAT 0x4 859 #define PCI_LTR_MAX_NOSNOOP_LAT 0x6 860 #define PCI_LTR_VALUE_MASK 0x000003ff 861 #define PCI_LTR_SCALE_MASK 0x00001c00 862 #define PCI_LTR_SCALE_SHIFT 10 863 #define PCI_EXT_CAP_LTR_SIZEOF 8 864 865 /* Access Control Service */ 866 #define PCI_ACS_CAP 0x04 /* ACS Capability Register */ 867 #define PCI_ACS_SV 0x01 /* Source Validation */ 868 #define PCI_ACS_TB 0x02 /* Translation Blocking */ 869 #define PCI_ACS_RR 0x04 /* P2P Request Redirect */ 870 #define PCI_ACS_CR 0x08 /* P2P Completion Redirect */ 871 #define PCI_ACS_UF 0x10 /* Upstream Forwarding */ 872 #define PCI_ACS_EC 0x20 /* P2P Egress Control */ 873 #define PCI_ACS_DT 0x40 /* Direct Translated P2P */ 874 #define PCI_ACS_EGRESS_BITS 0x05 /* ACS Egress Control Vector Size */ 875 #define PCI_ACS_CTRL 0x06 /* ACS Control Register */ 876 #define PCI_ACS_EGRESS_CTL_V 0x08 /* ACS Egress Control Vector */ 877 878 #define PCI_VSEC_HDR 4 /* extended cap - vendor-specific */ 879 #define PCI_VSEC_HDR_LEN_SHIFT 20 /* shift for length field */ 880 881 /* SATA capability */ 882 #define PCI_SATA_REGS 4 /* SATA REGs specifier */ 883 #define PCI_SATA_REGS_MASK 0xF /* location - BAR#/inline */ 884 #define PCI_SATA_REGS_INLINE 0xF /* REGS in config space */ 885 #define PCI_SATA_SIZEOF_SHORT 8 886 #define PCI_SATA_SIZEOF_LONG 16 887 888 /* Resizable BARs */ 889 #define PCI_REBAR_CTRL 8 /* control register */ 890 #define PCI_REBAR_CTRL_NBAR_MASK (7 << 5) /* mask for # bars */ 891 #define PCI_REBAR_CTRL_NBAR_SHIFT 5 /* shift for # bars */ 892 893 /* Dynamic Power Allocation */ 894 #define PCI_DPA_CAP 4 /* capability register */ 895 #define PCI_DPA_CAP_SUBSTATE_MASK 0x1F /* # substates - 1 */ 896 #define PCI_DPA_BASE_SIZEOF 16 /* size with 0 substates */ 897 898 /* TPH Requester */ 899 #define PCI_TPH_CAP 4 /* capability register */ 900 #define PCI_TPH_CAP_LOC_MASK 0x600 /* location mask */ 901 #define PCI_TPH_LOC_NONE 0x000 /* no location */ 902 #define PCI_TPH_LOC_CAP 0x200 /* in capability */ 903 #define PCI_TPH_LOC_MSIX 0x400 /* in MSI-X */ 904 #define PCI_TPH_CAP_ST_MASK 0x07FF0000 /* st table mask */ 905 #define PCI_TPH_CAP_ST_SHIFT 16 /* st table shift */ 906 #define PCI_TPH_BASE_SIZEOF 12 /* size with no st table */ 907 908 #endif /* LINUX_PCI_REGS_H */ 909