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 29 /* Since there is only one target, make it 0 */ 30 #define CXLFLASH_TARGET 0 31 #define CXLFLASH_MAX_CDB_LEN 16 32 33 /* Really only one target per bus since the Texan is directly attached */ 34 #define CXLFLASH_MAX_NUM_TARGETS_PER_BUS 1 35 #define CXLFLASH_MAX_NUM_LUNS_PER_TARGET 65536 36 37 #define CXLFLASH_PCI_ERROR_RECOVERY_TIMEOUT (120 * HZ) 38 39 #define NUM_FC_PORTS CXLFLASH_NUM_FC_PORTS /* ports per AFU */ 40 41 /* FC defines */ 42 #define FC_MTIP_CMDCONFIG 0x010 43 #define FC_MTIP_STATUS 0x018 44 45 #define FC_PNAME 0x300 46 #define FC_CONFIG 0x320 47 #define FC_CONFIG2 0x328 48 #define FC_STATUS 0x330 49 #define FC_ERROR 0x380 50 #define FC_ERRCAP 0x388 51 #define FC_ERRMSK 0x390 52 #define FC_CNT_CRCERR 0x538 53 #define FC_CRC_THRESH 0x580 54 55 #define FC_MTIP_CMDCONFIG_ONLINE 0x20ULL 56 #define FC_MTIP_CMDCONFIG_OFFLINE 0x40ULL 57 58 #define FC_MTIP_STATUS_MASK 0x30ULL 59 #define FC_MTIP_STATUS_ONLINE 0x20ULL 60 #define FC_MTIP_STATUS_OFFLINE 0x10ULL 61 62 /* TIMEOUT and RETRY definitions */ 63 64 /* AFU command timeout values */ 65 #define MC_AFU_SYNC_TIMEOUT 5 /* 5 secs */ 66 67 /* AFU command room retry limit */ 68 #define MC_ROOM_RETRY_CNT 10 69 70 /* FC CRC clear periodic timer */ 71 #define MC_CRC_THRESH 100 /* threshold in 5 mins */ 72 73 #define FC_PORT_STATUS_RETRY_CNT 100 /* 100 100ms retries = 10 seconds */ 74 #define FC_PORT_STATUS_RETRY_INTERVAL_US 100000 /* microseconds */ 75 76 /* VPD defines */ 77 #define CXLFLASH_VPD_LEN 256 78 #define WWPN_LEN 16 79 #define WWPN_BUF_LEN (WWPN_LEN + 1) 80 81 enum undo_level { 82 UNDO_NOOP = 0, 83 FREE_IRQ, 84 UNMAP_ONE, 85 UNMAP_TWO, 86 UNMAP_THREE 87 }; 88 89 struct dev_dependent_vals { 90 u64 max_sectors; 91 u64 flags; 92 #define CXLFLASH_NOTIFY_SHUTDOWN 0x0000000000000001ULL 93 }; 94 95 struct asyc_intr_info { 96 u64 status; 97 char *desc; 98 u8 port; 99 u8 action; 100 #define CLR_FC_ERROR 0x01 101 #define LINK_RESET 0x02 102 #define SCAN_HOST 0x04 103 }; 104 105 #ifndef CONFIG_CXL_EEH 106 #define cxl_perst_reloads_same_image(_a, _b) do { } while (0) 107 #endif 108 109 #endif /* _CXLFLASH_MAIN_H */ 110