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/*
* 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
if (ddv->flags & CXLFLASH_OCXL_DEV)
ops = &cxlflash_ocxl_ops;
#endif
#ifdef CONFIG_CXL
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 */
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