1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * CXL Flash Device Driver 4 * 5 * Written by: Manoj N. Kumar <manoj@linux.vnet.ibm.com>, IBM Corporation 6 * Matthew R. Ochs <mrochs@linux.vnet.ibm.com>, IBM Corporation 7 * 8 * Copyright (C) 2015 IBM Corporation 9 */ 10 11#ifndef _CXLFLASH_MAIN_H 12#define _CXLFLASH_MAIN_H 13 14#include <linux/list.h> 15#include <linux/types.h> 16#include <scsi/scsi.h> 17#include <scsi/scsi_device.h> 18 19#include "backend.h" 20 21#define CXLFLASH_NAME "cxlflash" 22#define CXLFLASH_ADAPTER_NAME "IBM POWER CXL Flash Adapter" 23#define CXLFLASH_MAX_ADAPTERS 32 24 25#define PCI_DEVICE_ID_IBM_CORSA 0x04F0 26#define PCI_DEVICE_ID_IBM_FLASH_GT 0x0600 27#define PCI_DEVICE_ID_IBM_BRIARD 0x0624 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/* FC defines */ 40#define FC_MTIP_CMDCONFIG 0x010 41#define FC_MTIP_STATUS 0x018 42#define FC_MAX_NUM_LUNS 0x080 /* Max LUNs host can provision for port */ 43#define FC_CUR_NUM_LUNS 0x088 /* Cur number LUNs provisioned for port */ 44#define FC_MAX_CAP_PORT 0x090 /* Max capacity all LUNs for port (4K blocks) */ 45#define FC_CUR_CAP_PORT 0x098 /* Cur capacity all LUNs for port (4K blocks) */ 46 47#define FC_PNAME 0x300 48#define FC_CONFIG 0x320 49#define FC_CONFIG2 0x328 50#define FC_STATUS 0x330 51#define FC_ERROR 0x380 52#define FC_ERRCAP 0x388 53#define FC_ERRMSK 0x390 54#define FC_CNT_CRCERR 0x538 55#define FC_CRC_THRESH 0x580 56 57#define FC_MTIP_CMDCONFIG_ONLINE 0x20ULL 58#define FC_MTIP_CMDCONFIG_OFFLINE 0x40ULL 59 60#define FC_MTIP_STATUS_MASK 0x30ULL 61#define FC_MTIP_STATUS_ONLINE 0x20ULL 62#define FC_MTIP_STATUS_OFFLINE 0x10ULL 63 64/* TIMEOUT and RETRY definitions */ 65 66/* AFU command timeout values */ 67#define MC_AFU_SYNC_TIMEOUT 5 /* 5 secs */ 68#define MC_LUN_PROV_TIMEOUT 5 /* 5 secs */ 69#define MC_AFU_DEBUG_TIMEOUT 5 /* 5 secs */ 70 71/* AFU command room retry limit */ 72#define MC_ROOM_RETRY_CNT 10 73 74/* FC CRC clear periodic timer */ 75#define MC_CRC_THRESH 100 /* threshold in 5 mins */ 76 77#define FC_PORT_STATUS_RETRY_CNT 100 /* 100 100ms retries = 10 seconds */ 78#define FC_PORT_STATUS_RETRY_INTERVAL_US 100000 /* microseconds */ 79 80/* VPD defines */ 81#define CXLFLASH_VPD_LEN 256 82#define WWPN_LEN 16 83#define WWPN_BUF_LEN (WWPN_LEN + 1) 84 85enum undo_level { 86 UNDO_NOOP = 0, 87 FREE_IRQ, 88 UNMAP_ONE, 89 UNMAP_TWO, 90 UNMAP_THREE 91}; 92 93struct dev_dependent_vals { 94 u64 max_sectors; 95 u64 flags; 96#define CXLFLASH_NOTIFY_SHUTDOWN 0x0000000000000001ULL 97#define CXLFLASH_WWPN_VPD_REQUIRED 0x0000000000000002ULL 98#define CXLFLASH_OCXL_DEV 0x0000000000000004ULL 99}; 100 101static inline const struct cxlflash_backend_ops * 102cxlflash_assign_ops(struct dev_dependent_vals *ddv) 103{ 104 const struct cxlflash_backend_ops *ops = NULL; 105 106#ifdef CONFIG_OCXL_BASE 107 if (ddv->flags & CXLFLASH_OCXL_DEV) 108 ops = &cxlflash_ocxl_ops; 109#endif 110 111#ifdef CONFIG_CXL_BASE 112 if (!(ddv->flags & CXLFLASH_OCXL_DEV)) 113 ops = &cxlflash_cxl_ops; 114#endif 115 116 return ops; 117} 118 119struct asyc_intr_info { 120 u64 status; 121 char *desc; 122 u8 port; 123 u8 action; 124#define CLR_FC_ERROR 0x01 125#define LINK_RESET 0x02 126#define SCAN_HOST 0x04 127}; 128 129#endif /* _CXLFLASH_MAIN_H */ 130