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Diffstat (limited to '')
| -rw-r--r-- | drivers/scsi/cxlflash/main.h | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/drivers/scsi/cxlflash/main.h b/drivers/scsi/cxlflash/main.h new file mode 100644 index 000000000..a39be94d1 --- /dev/null +++ b/drivers/scsi/cxlflash/main.h @@ -0,0 +1,133 @@ +/* + * CXL Flash Device Driver + * + * Written by: Manoj N. Kumar <manoj@linux.vnet.ibm.com>, IBM Corporation + * Matthew R. Ochs <mrochs@linux.vnet.ibm.com>, IBM Corporation + * + * Copyright (C) 2015 IBM Corporation + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifndef _CXLFLASH_MAIN_H +#define _CXLFLASH_MAIN_H + +#include <linux/list.h> +#include <linux/types.h> +#include <scsi/scsi.h> +#include <scsi/scsi_device.h> + +#include "backend.h" + +#define CXLFLASH_NAME "cxlflash" +#define CXLFLASH_ADAPTER_NAME "IBM POWER CXL Flash Adapter" +#define CXLFLASH_MAX_ADAPTERS 32 + +#define PCI_DEVICE_ID_IBM_CORSA 0x04F0 +#define PCI_DEVICE_ID_IBM_FLASH_GT 0x0600 +#define PCI_DEVICE_ID_IBM_BRIARD 0x0624 + +/* Since there is only one target, make it 0 */ +#define CXLFLASH_TARGET 0 +#define CXLFLASH_MAX_CDB_LEN 16 + +/* Really only one target per bus since the Texan is directly attached */ +#define CXLFLASH_MAX_NUM_TARGETS_PER_BUS 1 +#define CXLFLASH_MAX_NUM_LUNS_PER_TARGET 65536 + +#define CXLFLASH_PCI_ERROR_RECOVERY_TIMEOUT (120 * HZ) + +/* FC defines */ +#define FC_MTIP_CMDCONFIG 0x010 +#define FC_MTIP_STATUS 0x018 +#define FC_MAX_NUM_LUNS 0x080 /* Max LUNs host can provision for port */ +#define FC_CUR_NUM_LUNS 0x088 /* Cur number LUNs provisioned for port */ +#define FC_MAX_CAP_PORT 0x090 /* Max capacity all LUNs for port (4K blocks) */ +#define FC_CUR_CAP_PORT 0x098 /* Cur capacity all LUNs for port (4K blocks) */ + +#define FC_PNAME 0x300 +#define FC_CONFIG 0x320 +#define FC_CONFIG2 0x328 +#define FC_STATUS 0x330 +#define FC_ERROR 0x380 +#define FC_ERRCAP 0x388 +#define FC_ERRMSK 0x390 +#define FC_CNT_CRCERR 0x538 +#define FC_CRC_THRESH 0x580 + +#define FC_MTIP_CMDCONFIG_ONLINE 0x20ULL +#define FC_MTIP_CMDCONFIG_OFFLINE 0x40ULL + +#define FC_MTIP_STATUS_MASK 0x30ULL +#define FC_MTIP_STATUS_ONLINE 0x20ULL +#define FC_MTIP_STATUS_OFFLINE 0x10ULL + +/* TIMEOUT and RETRY definitions */ + +/* AFU command timeout values */ +#define MC_AFU_SYNC_TIMEOUT 5 /* 5 secs */ +#define MC_LUN_PROV_TIMEOUT 5 /* 5 secs */ +#define MC_AFU_DEBUG_TIMEOUT 5 /* 5 secs */ + +/* AFU command room retry limit */ +#define MC_ROOM_RETRY_CNT 10 + +/* FC CRC clear periodic timer */ +#define MC_CRC_THRESH 100 /* threshold in 5 mins */ + +#define FC_PORT_STATUS_RETRY_CNT 100 /* 100 100ms retries = 10 seconds */ +#define FC_PORT_STATUS_RETRY_INTERVAL_US 100000 /* microseconds */ + +/* VPD defines */ +#define CXLFLASH_VPD_LEN 256 +#define WWPN_LEN 16 +#define WWPN_BUF_LEN (WWPN_LEN + 1) + +enum undo_level { + UNDO_NOOP = 0, + FREE_IRQ, + UNMAP_ONE, + UNMAP_TWO, + UNMAP_THREE +}; + +struct dev_dependent_vals { + u64 max_sectors; + u64 flags; +#define CXLFLASH_NOTIFY_SHUTDOWN 0x0000000000000001ULL +#define CXLFLASH_WWPN_VPD_REQUIRED 0x0000000000000002ULL +#define CXLFLASH_OCXL_DEV 0x0000000000000004ULL +}; + +static inline const struct cxlflash_backend_ops * +cxlflash_assign_ops(struct dev_dependent_vals *ddv) +{ + const struct cxlflash_backend_ops *ops = NULL; + +#ifdef CONFIG_OCXL_BASE + if (ddv->flags & CXLFLASH_OCXL_DEV) + ops = &cxlflash_ocxl_ops; +#endif + +#ifdef CONFIG_CXL_BASE + if (!(ddv->flags & CXLFLASH_OCXL_DEV)) + ops = &cxlflash_cxl_ops; +#endif + + return ops; +} + +struct asyc_intr_info { + u64 status; + char *desc; + u8 port; + u8 action; +#define CLR_FC_ERROR 0x01 +#define LINK_RESET 0x02 +#define SCAN_HOST 0x04 +}; + +#endif /* _CXLFLASH_MAIN_H */ |