drivers/scsi/cxlflash/main.h

   1 /*
   2  * CXL Flash Device Driver
   3  *
   4  * Written by: Manoj N. Kumar <manoj@linux.vnet.ibm.com>, IBM Corporation
   5  *             Matthew R. Ochs <mrochs@linux.vnet.ibm.com>, IBM Corporation
   6  *
   7  * Copyright (C) 2015 IBM Corporation
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version
  12  * 2 of the License, or (at your option) any later version.
  13  */
  14
  15 #ifndef _CXLFLASH_MAIN_H
  16 #define _CXLFLASH_MAIN_H
  17
  18 #include <linux/list.h>
  19 #include <linux/types.h>
  20 #include <scsi/scsi.h>
  21 #include <scsi/scsi_device.h>
  22
  23 #define CXLFLASH_NAME           "cxlflash"
  24 #define CXLFLASH_ADAPTER_NAME   "IBM POWER CXL Flash Adapter"
  25 #define CXLFLASH_MAX_ADAPTERS   32
  26
  27 #define PCI_DEVICE_ID_IBM_CORSA         0x04F0
  28 #define PCI_DEVICE_ID_IBM_FLASH_GT      0x0600
  29 #define PCI_DEVICE_ID_IBM_BRIARD        0x0624
  30
  31 /* Since there is only one target, make it 0 */
  32 #define CXLFLASH_TARGET         0
  33 #define CXLFLASH_MAX_CDB_LEN    16
  34
  35 /* Really only one target per bus since the Texan is directly attached */
  36 #define CXLFLASH_MAX_NUM_TARGETS_PER_BUS        1
  37 #define CXLFLASH_MAX_NUM_LUNS_PER_TARGET        65536
  38
  39 #define CXLFLASH_PCI_ERROR_RECOVERY_TIMEOUT     (120 * HZ)
  40
  41 /* FC defines */
  42 #define FC_MTIP_CMDCONFIG 0x010
  43 #define FC_MTIP_STATUS 0x018
  44 #define FC_MAX_NUM_LUNS 0x080 /* Max LUNs host can provision for port */
  45 #define FC_CUR_NUM_LUNS 0x088 /* Cur number LUNs provisioned for port */
  46 #define FC_MAX_CAP_PORT 0x090 /* Max capacity all LUNs for port (4K blocks) */
  47 #define FC_CUR_CAP_PORT 0x098 /* Cur capacity all LUNs for port (4K blocks) */
  48
  49 #define FC_PNAME 0x300
  50 #define FC_CONFIG 0x320
  51 #define FC_CONFIG2 0x328
  52 #define FC_STATUS 0x330
  53 #define FC_ERROR 0x380
  54 #define FC_ERRCAP 0x388
  55 #define FC_ERRMSK 0x390
  56 #define FC_CNT_CRCERR 0x538
  57 #define FC_CRC_THRESH 0x580
  58
  59 #define FC_MTIP_CMDCONFIG_ONLINE        0x20ULL
  60 #define FC_MTIP_CMDCONFIG_OFFLINE       0x40ULL
  61
  62 #define FC_MTIP_STATUS_MASK             0x30ULL
  63 #define FC_MTIP_STATUS_ONLINE           0x20ULL
  64 #define FC_MTIP_STATUS_OFFLINE          0x10ULL
  65
  66 /* TIMEOUT and RETRY definitions */
  67
  68 /* AFU command timeout values */
  69 #define MC_AFU_SYNC_TIMEOUT     5       /* 5 secs */
  70 #define MC_LUN_PROV_TIMEOUT     5       /* 5 secs */
  71 #define MC_AFU_DEBUG_TIMEOUT    5       /* 5 secs */
  72
  73 /* AFU command room retry limit */
  74 #define MC_ROOM_RETRY_CNT       10
  75
  76 /* FC CRC clear periodic timer */
  77 #define MC_CRC_THRESH 100       /* threshold in 5 mins */
  78
  79 #define FC_PORT_STATUS_RETRY_CNT 100    /* 100 100ms retries = 10 seconds */
  80 #define FC_PORT_STATUS_RETRY_INTERVAL_US 100000 /* microseconds */
  81
  82 /* VPD defines */
  83 #define CXLFLASH_VPD_LEN        256
  84 #define WWPN_LEN        16
  85 #define WWPN_BUF_LEN    (WWPN_LEN + 1)
  86
  87 enum undo_level {
  88         UNDO_NOOP = 0,
  89         FREE_IRQ,
  90         UNMAP_ONE,
  91         UNMAP_TWO,
  92         UNMAP_THREE
  93 };
  94
  95 struct dev_dependent_vals {
  96         u64 max_sectors;
  97         u64 flags;
  98 #define CXLFLASH_NOTIFY_SHUTDOWN        0x0000000000000001ULL
  99 #define CXLFLASH_WWPN_VPD_REQUIRED      0x0000000000000002ULL
 100 };
 101
 102 struct asyc_intr_info {
 103         u64 status;
 104         char *desc;
 105         u8 port;
 106         u8 action;
 107 #define CLR_FC_ERROR    0x01
 108 #define LINK_RESET      0x02
 109 #define SCAN_HOST       0x04
 110 };
 111
 112 #endif /* _CXLFLASH_MAIN_H */