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 72 /* AFU command room retry limit */ 73 #define MC_ROOM_RETRY_CNT 10 74 75 /* FC CRC clear periodic timer */ 76 #define MC_CRC_THRESH 100 /* threshold in 5 mins */ 77 78 #define FC_PORT_STATUS_RETRY_CNT 100 /* 100 100ms retries = 10 seconds */ 79 #define FC_PORT_STATUS_RETRY_INTERVAL_US 100000 /* microseconds */ 80 81 /* VPD defines */ 82 #define CXLFLASH_VPD_LEN 256 83 #define WWPN_LEN 16 84 #define WWPN_BUF_LEN (WWPN_LEN + 1) 85 86 enum undo_level { 87 UNDO_NOOP = 0, 88 FREE_IRQ, 89 UNMAP_ONE, 90 UNMAP_TWO, 91 UNMAP_THREE 92 }; 93 94 struct dev_dependent_vals { 95 u64 max_sectors; 96 u64 flags; 97 #define CXLFLASH_NOTIFY_SHUTDOWN 0x0000000000000001ULL 98 }; 99 100 struct asyc_intr_info { 101 u64 status; 102 char *desc; 103 u8 port; 104 u8 action; 105 #define CLR_FC_ERROR 0x01 106 #define LINK_RESET 0x02 107 #define SCAN_HOST 0x04 108 }; 109 110 #endif /* _CXLFLASH_MAIN_H */ 111