Alok Kataria | 851b164 | 2009-10-13 14:51:05 -0700 | [diff] [blame] | 1 | /* |
| 2 | * VMware PVSCSI header file |
| 3 | * |
Arvind Kumar | a2713cc | 2014-03-08 12:51:12 -0800 | [diff] [blame] | 4 | * Copyright (C) 2008-2014, VMware, Inc. All Rights Reserved. |
Alok Kataria | 851b164 | 2009-10-13 14:51:05 -0700 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the |
| 8 | * Free Software Foundation; version 2 of the License and no later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, but |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 13 | * NON INFRINGEMENT. See the GNU General Public License for more |
| 14 | * details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | * |
Alok Kataria | 851b164 | 2009-10-13 14:51:05 -0700 | [diff] [blame] | 20 | */ |
| 21 | |
| 22 | #ifndef _VMW_PVSCSI_H_ |
| 23 | #define _VMW_PVSCSI_H_ |
| 24 | |
| 25 | #include <linux/types.h> |
| 26 | |
David Jeffery | aac173e | 2016-10-28 12:27:26 -0400 | [diff] [blame] | 27 | #define PVSCSI_DRIVER_VERSION_STRING "1.0.7.0-k" |
Alok Kataria | 851b164 | 2009-10-13 14:51:05 -0700 | [diff] [blame] | 28 | |
| 29 | #define PVSCSI_MAX_NUM_SG_ENTRIES_PER_SEGMENT 128 |
| 30 | |
| 31 | #define MASK(n) ((1 << (n)) - 1) /* make an n-bit mask */ |
| 32 | |
Alok Kataria | 851b164 | 2009-10-13 14:51:05 -0700 | [diff] [blame] | 33 | #define PCI_DEVICE_ID_VMWARE_PVSCSI 0x07C0 |
| 34 | |
| 35 | /* |
| 36 | * host adapter status/error codes |
| 37 | */ |
| 38 | enum HostBusAdapterStatus { |
Arvind Kumar | a931073 | 2012-03-08 15:48:53 +0530 | [diff] [blame] | 39 | BTSTAT_SUCCESS = 0x00, /* CCB complete normally with no errors */ |
| 40 | BTSTAT_LINKED_COMMAND_COMPLETED = 0x0a, |
| 41 | BTSTAT_LINKED_COMMAND_COMPLETED_WITH_FLAG = 0x0b, |
| 42 | BTSTAT_DATA_UNDERRUN = 0x0c, |
| 43 | BTSTAT_SELTIMEO = 0x11, /* SCSI selection timeout */ |
| 44 | BTSTAT_DATARUN = 0x12, /* data overrun/underrun */ |
| 45 | BTSTAT_BUSFREE = 0x13, /* unexpected bus free */ |
| 46 | BTSTAT_INVPHASE = 0x14, /* invalid bus phase or sequence |
| 47 | * requested by target */ |
| 48 | BTSTAT_LUNMISMATCH = 0x17, /* linked CCB has different LUN from |
| 49 | * first CCB */ |
| 50 | BTSTAT_INVPARAM = 0x1a, /* invalid parameter in CCB or segment |
| 51 | * list */ |
| 52 | BTSTAT_SENSFAILED = 0x1b, /* auto request sense failed */ |
| 53 | BTSTAT_TAGREJECT = 0x1c, /* SCSI II tagged queueing message |
| 54 | * rejected by target */ |
| 55 | BTSTAT_BADMSG = 0x1d, /* unsupported message received by the |
| 56 | * host adapter */ |
| 57 | BTSTAT_HAHARDWARE = 0x20, /* host adapter hardware failed */ |
| 58 | BTSTAT_NORESPONSE = 0x21, /* target did not respond to SCSI ATN, |
| 59 | * sent a SCSI RST */ |
| 60 | BTSTAT_SENTRST = 0x22, /* host adapter asserted a SCSI RST */ |
| 61 | BTSTAT_RECVRST = 0x23, /* other SCSI devices asserted a SCSI |
| 62 | * RST */ |
| 63 | BTSTAT_DISCONNECT = 0x24, /* target device reconnected improperly |
| 64 | * (w/o tag) */ |
| 65 | BTSTAT_BUSRESET = 0x25, /* host adapter issued BUS device reset */ |
| 66 | BTSTAT_ABORTQUEUE = 0x26, /* abort queue generated */ |
| 67 | BTSTAT_HASOFTWARE = 0x27, /* host adapter software error */ |
| 68 | BTSTAT_HATIMEOUT = 0x30, /* host adapter hardware timeout error */ |
| 69 | BTSTAT_SCSIPARITY = 0x34, /* SCSI parity error detected */ |
| 70 | }; |
| 71 | |
| 72 | /* |
| 73 | * SCSI device status values. |
| 74 | */ |
| 75 | enum ScsiDeviceStatus { |
| 76 | SDSTAT_GOOD = 0x00, /* No errors. */ |
| 77 | SDSTAT_CHECK = 0x02, /* Check condition. */ |
Alok Kataria | 851b164 | 2009-10-13 14:51:05 -0700 | [diff] [blame] | 78 | }; |
| 79 | |
| 80 | /* |
| 81 | * Register offsets. |
| 82 | * |
| 83 | * These registers are accessible both via i/o space and mm i/o. |
| 84 | */ |
| 85 | |
| 86 | enum PVSCSIRegOffset { |
| 87 | PVSCSI_REG_OFFSET_COMMAND = 0x0, |
| 88 | PVSCSI_REG_OFFSET_COMMAND_DATA = 0x4, |
| 89 | PVSCSI_REG_OFFSET_COMMAND_STATUS = 0x8, |
| 90 | PVSCSI_REG_OFFSET_LAST_STS_0 = 0x100, |
| 91 | PVSCSI_REG_OFFSET_LAST_STS_1 = 0x104, |
| 92 | PVSCSI_REG_OFFSET_LAST_STS_2 = 0x108, |
| 93 | PVSCSI_REG_OFFSET_LAST_STS_3 = 0x10c, |
| 94 | PVSCSI_REG_OFFSET_INTR_STATUS = 0x100c, |
| 95 | PVSCSI_REG_OFFSET_INTR_MASK = 0x2010, |
| 96 | PVSCSI_REG_OFFSET_KICK_NON_RW_IO = 0x3014, |
| 97 | PVSCSI_REG_OFFSET_DEBUG = 0x3018, |
| 98 | PVSCSI_REG_OFFSET_KICK_RW_IO = 0x4018, |
| 99 | }; |
| 100 | |
| 101 | /* |
| 102 | * Virtual h/w commands. |
| 103 | */ |
| 104 | |
| 105 | enum PVSCSICommands { |
| 106 | PVSCSI_CMD_FIRST = 0, /* has to be first */ |
| 107 | |
| 108 | PVSCSI_CMD_ADAPTER_RESET = 1, |
| 109 | PVSCSI_CMD_ISSUE_SCSI = 2, |
| 110 | PVSCSI_CMD_SETUP_RINGS = 3, |
| 111 | PVSCSI_CMD_RESET_BUS = 4, |
| 112 | PVSCSI_CMD_RESET_DEVICE = 5, |
| 113 | PVSCSI_CMD_ABORT_CMD = 6, |
| 114 | PVSCSI_CMD_CONFIG = 7, |
| 115 | PVSCSI_CMD_SETUP_MSG_RING = 8, |
| 116 | PVSCSI_CMD_DEVICE_UNPLUG = 9, |
Rishi Mehta | 2a815b5 | 2014-03-11 13:51:33 -0700 | [diff] [blame] | 117 | PVSCSI_CMD_SETUP_REQCALLTHRESHOLD = 10, |
Alok Kataria | 851b164 | 2009-10-13 14:51:05 -0700 | [diff] [blame] | 118 | |
Rishi Mehta | 2a815b5 | 2014-03-11 13:51:33 -0700 | [diff] [blame] | 119 | PVSCSI_CMD_LAST = 11 /* has to be last */ |
Alok Kataria | 851b164 | 2009-10-13 14:51:05 -0700 | [diff] [blame] | 120 | }; |
| 121 | |
| 122 | /* |
| 123 | * Command descriptor for PVSCSI_CMD_RESET_DEVICE -- |
| 124 | */ |
| 125 | |
| 126 | struct PVSCSICmdDescResetDevice { |
| 127 | u32 target; |
| 128 | u8 lun[8]; |
| 129 | } __packed; |
| 130 | |
| 131 | /* |
Arvind Kumar | a931073 | 2012-03-08 15:48:53 +0530 | [diff] [blame] | 132 | * Command descriptor for PVSCSI_CMD_CONFIG -- |
| 133 | */ |
| 134 | |
| 135 | struct PVSCSICmdDescConfigCmd { |
| 136 | u64 cmpAddr; |
| 137 | u64 configPageAddress; |
| 138 | u32 configPageNum; |
| 139 | u32 _pad; |
| 140 | } __packed; |
| 141 | |
Rishi Mehta | 2a815b5 | 2014-03-11 13:51:33 -0700 | [diff] [blame] | 142 | /* |
| 143 | * Command descriptor for PVSCSI_CMD_SETUP_REQCALLTHRESHOLD -- |
| 144 | */ |
| 145 | |
| 146 | struct PVSCSICmdDescSetupReqCall { |
| 147 | u32 enable; |
| 148 | } __packed; |
| 149 | |
Arvind Kumar | a931073 | 2012-03-08 15:48:53 +0530 | [diff] [blame] | 150 | enum PVSCSIConfigPageType { |
| 151 | PVSCSI_CONFIG_PAGE_CONTROLLER = 0x1958, |
| 152 | PVSCSI_CONFIG_PAGE_PHY = 0x1959, |
| 153 | PVSCSI_CONFIG_PAGE_DEVICE = 0x195a, |
| 154 | }; |
| 155 | |
| 156 | enum PVSCSIConfigPageAddressType { |
| 157 | PVSCSI_CONFIG_CONTROLLER_ADDRESS = 0x2120, |
| 158 | PVSCSI_CONFIG_BUSTARGET_ADDRESS = 0x2121, |
| 159 | PVSCSI_CONFIG_PHY_ADDRESS = 0x2122, |
| 160 | }; |
| 161 | |
| 162 | /* |
Alok Kataria | 851b164 | 2009-10-13 14:51:05 -0700 | [diff] [blame] | 163 | * Command descriptor for PVSCSI_CMD_ABORT_CMD -- |
| 164 | * |
| 165 | * - currently does not support specifying the LUN. |
| 166 | * - _pad should be 0. |
| 167 | */ |
| 168 | |
| 169 | struct PVSCSICmdDescAbortCmd { |
| 170 | u64 context; |
| 171 | u32 target; |
| 172 | u32 _pad; |
| 173 | } __packed; |
| 174 | |
| 175 | /* |
| 176 | * Command descriptor for PVSCSI_CMD_SETUP_RINGS -- |
| 177 | * |
| 178 | * Notes: |
| 179 | * - reqRingNumPages and cmpRingNumPages need to be power of two. |
| 180 | * - reqRingNumPages and cmpRingNumPages need to be different from 0, |
| 181 | * - reqRingNumPages and cmpRingNumPages need to be inferior to |
| 182 | * PVSCSI_SETUP_RINGS_MAX_NUM_PAGES. |
| 183 | */ |
| 184 | |
| 185 | #define PVSCSI_SETUP_RINGS_MAX_NUM_PAGES 32 |
| 186 | struct PVSCSICmdDescSetupRings { |
| 187 | u32 reqRingNumPages; |
| 188 | u32 cmpRingNumPages; |
| 189 | u64 ringsStatePPN; |
| 190 | u64 reqRingPPNs[PVSCSI_SETUP_RINGS_MAX_NUM_PAGES]; |
| 191 | u64 cmpRingPPNs[PVSCSI_SETUP_RINGS_MAX_NUM_PAGES]; |
| 192 | } __packed; |
| 193 | |
| 194 | /* |
| 195 | * Command descriptor for PVSCSI_CMD_SETUP_MSG_RING -- |
| 196 | * |
| 197 | * Notes: |
| 198 | * - this command was not supported in the initial revision of the h/w |
| 199 | * interface. Before using it, you need to check that it is supported by |
| 200 | * writing PVSCSI_CMD_SETUP_MSG_RING to the 'command' register, then |
| 201 | * immediately after read the 'command status' register: |
| 202 | * * a value of -1 means that the cmd is NOT supported, |
| 203 | * * a value != -1 means that the cmd IS supported. |
| 204 | * If it's supported the 'command status' register should return: |
| 205 | * sizeof(PVSCSICmdDescSetupMsgRing) / sizeof(u32). |
| 206 | * - this command should be issued _after_ the usual SETUP_RINGS so that the |
| 207 | * RingsState page is already setup. If not, the command is a nop. |
| 208 | * - numPages needs to be a power of two, |
| 209 | * - numPages needs to be different from 0, |
| 210 | * - _pad should be zero. |
| 211 | */ |
| 212 | |
| 213 | #define PVSCSI_SETUP_MSG_RING_MAX_NUM_PAGES 16 |
| 214 | |
| 215 | struct PVSCSICmdDescSetupMsgRing { |
| 216 | u32 numPages; |
| 217 | u32 _pad; |
| 218 | u64 ringPPNs[PVSCSI_SETUP_MSG_RING_MAX_NUM_PAGES]; |
| 219 | } __packed; |
| 220 | |
| 221 | enum PVSCSIMsgType { |
| 222 | PVSCSI_MSG_DEV_ADDED = 0, |
| 223 | PVSCSI_MSG_DEV_REMOVED = 1, |
| 224 | PVSCSI_MSG_LAST = 2, |
| 225 | }; |
| 226 | |
| 227 | /* |
| 228 | * Msg descriptor. |
| 229 | * |
| 230 | * sizeof(struct PVSCSIRingMsgDesc) == 128. |
| 231 | * |
| 232 | * - type is of type enum PVSCSIMsgType. |
| 233 | * - the content of args depend on the type of event being delivered. |
| 234 | */ |
| 235 | |
| 236 | struct PVSCSIRingMsgDesc { |
| 237 | u32 type; |
| 238 | u32 args[31]; |
| 239 | } __packed; |
| 240 | |
| 241 | struct PVSCSIMsgDescDevStatusChanged { |
| 242 | u32 type; /* PVSCSI_MSG_DEV _ADDED / _REMOVED */ |
| 243 | u32 bus; |
| 244 | u32 target; |
| 245 | u8 lun[8]; |
| 246 | u32 pad[27]; |
| 247 | } __packed; |
| 248 | |
| 249 | /* |
| 250 | * Rings state. |
| 251 | * |
| 252 | * - the fields: |
| 253 | * . msgProdIdx, |
| 254 | * . msgConsIdx, |
| 255 | * . msgNumEntriesLog2, |
| 256 | * .. are only used once the SETUP_MSG_RING cmd has been issued. |
| 257 | * - '_pad' helps to ensure that the msg related fields are on their own |
| 258 | * cache-line. |
| 259 | */ |
| 260 | |
| 261 | struct PVSCSIRingsState { |
| 262 | u32 reqProdIdx; |
| 263 | u32 reqConsIdx; |
| 264 | u32 reqNumEntriesLog2; |
| 265 | |
| 266 | u32 cmpProdIdx; |
| 267 | u32 cmpConsIdx; |
| 268 | u32 cmpNumEntriesLog2; |
| 269 | |
Rishi Mehta | 2a815b5 | 2014-03-11 13:51:33 -0700 | [diff] [blame] | 270 | u32 reqCallThreshold; |
| 271 | |
| 272 | u8 _pad[100]; |
Alok Kataria | 851b164 | 2009-10-13 14:51:05 -0700 | [diff] [blame] | 273 | |
| 274 | u32 msgProdIdx; |
| 275 | u32 msgConsIdx; |
| 276 | u32 msgNumEntriesLog2; |
| 277 | } __packed; |
| 278 | |
| 279 | /* |
| 280 | * Request descriptor. |
| 281 | * |
| 282 | * sizeof(RingReqDesc) = 128 |
| 283 | * |
| 284 | * - context: is a unique identifier of a command. It could normally be any |
| 285 | * 64bit value, however we currently store it in the serialNumber variable |
| 286 | * of struct SCSI_Command, so we have the following restrictions due to the |
| 287 | * way this field is handled in the vmkernel storage stack: |
| 288 | * * this value can't be 0, |
| 289 | * * the upper 32bit need to be 0 since serialNumber is as a u32. |
| 290 | * Currently tracked as PR 292060. |
| 291 | * - dataLen: contains the total number of bytes that need to be transferred. |
| 292 | * - dataAddr: |
| 293 | * * if PVSCSI_FLAG_CMD_WITH_SG_LIST is set: dataAddr is the PA of the first |
| 294 | * s/g table segment, each s/g segment is entirely contained on a single |
| 295 | * page of physical memory, |
| 296 | * * if PVSCSI_FLAG_CMD_WITH_SG_LIST is NOT set, then dataAddr is the PA of |
| 297 | * the buffer used for the DMA transfer, |
| 298 | * - flags: |
| 299 | * * PVSCSI_FLAG_CMD_WITH_SG_LIST: see dataAddr above, |
| 300 | * * PVSCSI_FLAG_CMD_DIR_NONE: no DMA involved, |
| 301 | * * PVSCSI_FLAG_CMD_DIR_TOHOST: transfer from device to main memory, |
| 302 | * * PVSCSI_FLAG_CMD_DIR_TODEVICE: transfer from main memory to device, |
| 303 | * * PVSCSI_FLAG_CMD_OUT_OF_BAND_CDB: reserved to handle CDBs larger than |
| 304 | * 16bytes. To be specified. |
| 305 | * - vcpuHint: vcpuId of the processor that will be most likely waiting for the |
| 306 | * completion of the i/o. For guest OSes that use lowest priority message |
| 307 | * delivery mode (such as windows), we use this "hint" to deliver the |
| 308 | * completion action to the proper vcpu. For now, we can use the vcpuId of |
| 309 | * the processor that initiated the i/o as a likely candidate for the vcpu |
| 310 | * that will be waiting for the completion.. |
| 311 | * - bus should be 0: we currently only support bus 0 for now. |
| 312 | * - unused should be zero'd. |
| 313 | */ |
| 314 | |
| 315 | #define PVSCSI_FLAG_CMD_WITH_SG_LIST (1 << 0) |
| 316 | #define PVSCSI_FLAG_CMD_OUT_OF_BAND_CDB (1 << 1) |
| 317 | #define PVSCSI_FLAG_CMD_DIR_NONE (1 << 2) |
| 318 | #define PVSCSI_FLAG_CMD_DIR_TOHOST (1 << 3) |
| 319 | #define PVSCSI_FLAG_CMD_DIR_TODEVICE (1 << 4) |
| 320 | |
| 321 | struct PVSCSIRingReqDesc { |
| 322 | u64 context; |
| 323 | u64 dataAddr; |
| 324 | u64 dataLen; |
| 325 | u64 senseAddr; |
| 326 | u32 senseLen; |
| 327 | u32 flags; |
| 328 | u8 cdb[16]; |
| 329 | u8 cdbLen; |
| 330 | u8 lun[8]; |
| 331 | u8 tag; |
| 332 | u8 bus; |
| 333 | u8 target; |
Wentao Wang | cf71d59 | 2022-06-02 08:57:00 +0000 | [diff] [blame] | 334 | u16 vcpuHint; |
| 335 | u8 unused[58]; |
Alok Kataria | 851b164 | 2009-10-13 14:51:05 -0700 | [diff] [blame] | 336 | } __packed; |
| 337 | |
| 338 | /* |
| 339 | * Scatter-gather list management. |
| 340 | * |
| 341 | * As described above, when PVSCSI_FLAG_CMD_WITH_SG_LIST is set in the |
| 342 | * RingReqDesc.flags, then RingReqDesc.dataAddr is the PA of the first s/g |
| 343 | * table segment. |
| 344 | * |
| 345 | * - each segment of the s/g table contain a succession of struct |
| 346 | * PVSCSISGElement. |
| 347 | * - each segment is entirely contained on a single physical page of memory. |
| 348 | * - a "chain" s/g element has the flag PVSCSI_SGE_FLAG_CHAIN_ELEMENT set in |
| 349 | * PVSCSISGElement.flags and in this case: |
| 350 | * * addr is the PA of the next s/g segment, |
| 351 | * * length is undefined, assumed to be 0. |
| 352 | */ |
| 353 | |
| 354 | struct PVSCSISGElement { |
| 355 | u64 addr; |
| 356 | u32 length; |
| 357 | u32 flags; |
| 358 | } __packed; |
| 359 | |
| 360 | /* |
| 361 | * Completion descriptor. |
| 362 | * |
| 363 | * sizeof(RingCmpDesc) = 32 |
| 364 | * |
| 365 | * - context: identifier of the command. The same thing that was specified |
| 366 | * under "context" as part of struct RingReqDesc at initiation time, |
| 367 | * - dataLen: number of bytes transferred for the actual i/o operation, |
| 368 | * - senseLen: number of bytes written into the sense buffer, |
| 369 | * - hostStatus: adapter status, |
| 370 | * - scsiStatus: device status, |
| 371 | * - _pad should be zero. |
| 372 | */ |
| 373 | |
| 374 | struct PVSCSIRingCmpDesc { |
| 375 | u64 context; |
| 376 | u64 dataLen; |
| 377 | u32 senseLen; |
| 378 | u16 hostStatus; |
| 379 | u16 scsiStatus; |
| 380 | u32 _pad[2]; |
| 381 | } __packed; |
| 382 | |
Arvind Kumar | a931073 | 2012-03-08 15:48:53 +0530 | [diff] [blame] | 383 | struct PVSCSIConfigPageHeader { |
| 384 | u32 pageNum; |
| 385 | u16 numDwords; |
| 386 | u16 hostStatus; |
| 387 | u16 scsiStatus; |
| 388 | u16 reserved[3]; |
| 389 | } __packed; |
| 390 | |
| 391 | struct PVSCSIConfigPageController { |
| 392 | struct PVSCSIConfigPageHeader header; |
| 393 | u64 nodeWWN; /* Device name as defined in the SAS spec. */ |
| 394 | u16 manufacturer[64]; |
| 395 | u16 serialNumber[64]; |
| 396 | u16 opromVersion[32]; |
| 397 | u16 hwVersion[32]; |
| 398 | u16 firmwareVersion[32]; |
| 399 | u32 numPhys; |
| 400 | u8 useConsecutivePhyWWNs; |
| 401 | u8 reserved[3]; |
| 402 | } __packed; |
| 403 | |
Alok Kataria | 851b164 | 2009-10-13 14:51:05 -0700 | [diff] [blame] | 404 | /* |
| 405 | * Interrupt status / IRQ bits. |
| 406 | */ |
| 407 | |
| 408 | #define PVSCSI_INTR_CMPL_0 (1 << 0) |
| 409 | #define PVSCSI_INTR_CMPL_1 (1 << 1) |
| 410 | #define PVSCSI_INTR_CMPL_MASK MASK(2) |
| 411 | |
| 412 | #define PVSCSI_INTR_MSG_0 (1 << 2) |
| 413 | #define PVSCSI_INTR_MSG_1 (1 << 3) |
| 414 | #define PVSCSI_INTR_MSG_MASK (MASK(2) << 2) |
| 415 | |
| 416 | #define PVSCSI_INTR_ALL_SUPPORTED MASK(4) |
| 417 | |
| 418 | /* |
| 419 | * Number of MSI-X vectors supported. |
| 420 | */ |
| 421 | #define PVSCSI_MAX_INTRS 24 |
| 422 | |
| 423 | /* |
Alok Kataria | 851b164 | 2009-10-13 14:51:05 -0700 | [diff] [blame] | 424 | * Misc constants for the rings. |
| 425 | */ |
| 426 | |
| 427 | #define PVSCSI_MAX_NUM_PAGES_REQ_RING PVSCSI_SETUP_RINGS_MAX_NUM_PAGES |
| 428 | #define PVSCSI_MAX_NUM_PAGES_CMP_RING PVSCSI_SETUP_RINGS_MAX_NUM_PAGES |
| 429 | #define PVSCSI_MAX_NUM_PAGES_MSG_RING PVSCSI_SETUP_MSG_RING_MAX_NUM_PAGES |
| 430 | |
| 431 | #define PVSCSI_MAX_NUM_REQ_ENTRIES_PER_PAGE \ |
| 432 | (PAGE_SIZE / sizeof(struct PVSCSIRingReqDesc)) |
| 433 | |
| 434 | #define PVSCSI_MAX_REQ_QUEUE_DEPTH \ |
| 435 | (PVSCSI_MAX_NUM_PAGES_REQ_RING * PVSCSI_MAX_NUM_REQ_ENTRIES_PER_PAGE) |
| 436 | |
| 437 | #define PVSCSI_MEM_SPACE_COMMAND_NUM_PAGES 1 |
| 438 | #define PVSCSI_MEM_SPACE_INTR_STATUS_NUM_PAGES 1 |
| 439 | #define PVSCSI_MEM_SPACE_MISC_NUM_PAGES 2 |
| 440 | #define PVSCSI_MEM_SPACE_KICK_IO_NUM_PAGES 2 |
| 441 | #define PVSCSI_MEM_SPACE_MSIX_NUM_PAGES 2 |
| 442 | |
| 443 | enum PVSCSIMemSpace { |
| 444 | PVSCSI_MEM_SPACE_COMMAND_PAGE = 0, |
| 445 | PVSCSI_MEM_SPACE_INTR_STATUS_PAGE = 1, |
| 446 | PVSCSI_MEM_SPACE_MISC_PAGE = 2, |
| 447 | PVSCSI_MEM_SPACE_KICK_IO_PAGE = 4, |
| 448 | PVSCSI_MEM_SPACE_MSIX_TABLE_PAGE = 6, |
| 449 | PVSCSI_MEM_SPACE_MSIX_PBA_PAGE = 7, |
| 450 | }; |
| 451 | |
| 452 | #define PVSCSI_MEM_SPACE_NUM_PAGES \ |
| 453 | (PVSCSI_MEM_SPACE_COMMAND_NUM_PAGES + \ |
| 454 | PVSCSI_MEM_SPACE_INTR_STATUS_NUM_PAGES + \ |
| 455 | PVSCSI_MEM_SPACE_MISC_NUM_PAGES + \ |
| 456 | PVSCSI_MEM_SPACE_KICK_IO_NUM_PAGES + \ |
| 457 | PVSCSI_MEM_SPACE_MSIX_NUM_PAGES) |
| 458 | |
| 459 | #define PVSCSI_MEM_SPACE_SIZE (PVSCSI_MEM_SPACE_NUM_PAGES * PAGE_SIZE) |
| 460 | |
| 461 | #endif /* _VMW_PVSCSI_H_ */ |