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_DRIVER_DATE "(June 2, 2015)" 26 27 #define PCI_DEVICE_ID_IBM_CORSA 0x04F0 28 #define CXLFLASH_SUBS_DEV_ID 0x04F0 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 RELEASE_CONTEXT = 0, 84 FREE_IRQ, 85 UNMAP_ONE, 86 UNMAP_TWO, 87 UNMAP_THREE, 88 UNDO_START 89 }; 90 91 struct dev_dependent_vals { 92 u64 max_sectors; 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 }; 103 104 #endif /* _CXLFLASH_MAIN_H */ 105