forked from Minki/linux
ef51074a4e
Following a link up event, the LUNs available to the host may have changed. Without rescanning the host, the LUN topology is unknown to the user. In such a state, the user would be unable to locate provisioned resources. To remedy, the host should be rescanned after a link up event. Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Manoj N. Kumar <manoj@linux.vnet.ibm.com> Reviewed-by: Brian King <brking@linux.vnet.ibm.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
/*
|
|
* 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>
|
|
|
|
#define CXLFLASH_NAME "cxlflash"
|
|
#define CXLFLASH_ADAPTER_NAME "IBM POWER CXL Flash Adapter"
|
|
#define CXLFLASH_DRIVER_DATE "(August 13, 2015)"
|
|
|
|
#define PCI_DEVICE_ID_IBM_CORSA 0x04F0
|
|
#define CXLFLASH_SUBS_DEV_ID 0x04F0
|
|
|
|
/* 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)
|
|
|
|
#define NUM_FC_PORTS CXLFLASH_NUM_FC_PORTS /* ports per AFU */
|
|
|
|
/* FC defines */
|
|
#define FC_MTIP_CMDCONFIG 0x010
|
|
#define FC_MTIP_STATUS 0x018
|
|
|
|
#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 */
|
|
|
|
/* 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 {
|
|
RELEASE_CONTEXT = 0,
|
|
FREE_IRQ,
|
|
UNMAP_ONE,
|
|
UNMAP_TWO,
|
|
UNMAP_THREE,
|
|
UNDO_START
|
|
};
|
|
|
|
struct dev_dependent_vals {
|
|
u64 max_sectors;
|
|
};
|
|
|
|
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
|
|
};
|
|
|
|
#ifndef CONFIG_CXL_EEH
|
|
#define cxl_perst_reloads_same_image(_a, _b) do { } while (0)
|
|
#endif
|
|
|
|
#endif /* _CXLFLASH_MAIN_H */
|