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
  26 #define PCI_DEVICE_ID_IBM_CORSA         0x04F0
  27 #define PCI_DEVICE_ID_IBM_FLASH_GT      0x0600
  28 #define PCI_DEVICE_ID_IBM_BRIARD        0x0624
  29
  30 /* Since there is only one target, make it 0 */
  31 #define CXLFLASH_TARGET         0
  32 #define CXLFLASH_MAX_CDB_LEN    16
  33
  34 /* Really only one target per bus since the Texan is directly attached */
  35 #define CXLFLASH_MAX_NUM_TARGETS_PER_BUS        1
  36 #define CXLFLASH_MAX_NUM_LUNS_PER_TARGET        65536
  37
  38 #define CXLFLASH_PCI_ERROR_RECOVERY_TIMEOUT     (120 * HZ)
  39
  40 #define NUM_FC_PORTS    CXLFLASH_NUM_FC_PORTS   /* ports per AFU */
  41
  42 /* FC defines */
  43 #define FC_MTIP_CMDCONFIG 0x010
  44 #define FC_MTIP_STATUS 0x018
  45
  46 #define FC_PNAME 0x300
  47 #define FC_CONFIG 0x320
  48 #define FC_CONFIG2 0x328
  49 #define FC_STATUS 0x330
  50 #define FC_ERROR 0x380
  51 #define FC_ERRCAP 0x388
  52 #define FC_ERRMSK 0x390
  53 #define FC_CNT_CRCERR 0x538
  54 #define FC_CRC_THRESH 0x580
  55
  56 #define FC_MTIP_CMDCONFIG_ONLINE        0x20ULL
  57 #define FC_MTIP_CMDCONFIG_OFFLINE       0x40ULL
  58
  59 #define FC_MTIP_STATUS_MASK             0x30ULL
  60 #define FC_MTIP_STATUS_ONLINE           0x20ULL
  61 #define FC_MTIP_STATUS_OFFLINE          0x10ULL
  62
  63 /* TIMEOUT and RETRY definitions */
  64
  65 /* AFU command timeout values */
  66 #define MC_AFU_SYNC_TIMEOUT     5       /* 5 secs */
  67
  68 /* AFU command room retry limit */
  69 #define MC_ROOM_RETRY_CNT       10
  70
  71 /* FC CRC clear periodic timer */
  72 #define MC_CRC_THRESH 100       /* threshold in 5 mins */
  73
  74 #define FC_PORT_STATUS_RETRY_CNT 100    /* 100 100ms retries = 10 seconds */
  75 #define FC_PORT_STATUS_RETRY_INTERVAL_US 100000 /* microseconds */
  76
  77 /* VPD defines */
  78 #define CXLFLASH_VPD_LEN        256
  79 #define WWPN_LEN        16
  80 #define WWPN_BUF_LEN    (WWPN_LEN + 1)
  81
  82 enum undo_level {
  83         UNDO_NOOP = 0,
  84         FREE_IRQ,
  85         UNMAP_ONE,
  86         UNMAP_TWO,
  87         UNMAP_THREE
  88 };
  89
  90 struct dev_dependent_vals {
  91         u64 max_sectors;
  92         u64 flags;
  93 #define CXLFLASH_NOTIFY_SHUTDOWN   0x0000000000000001ULL
  94 };
  95
  96 struct asyc_intr_info {
  97         u64 status;
  98         char *desc;
  99         u8 port;
 100         u8 action;
 101 #define CLR_FC_ERROR    0x01
 102 #define LINK_RESET      0x02
 103 #define SCAN_HOST       0x04
 104 };
 105
 106 #endif /* _CXLFLASH_MAIN_H */