^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * zfcp device driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Global definitions for the zfcp device driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright IBM Corp. 2002, 2020
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #ifndef ZFCP_DEF_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define ZFCP_DEF_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) /*************************** INCLUDES *****************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/major.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/timer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/mempool.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/syscalls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/scatterlist.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/ioctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <scsi/fc/fc_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <scsi/fc/fc_gs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <scsi/scsi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <scsi/scsi_tcq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <scsi/scsi_cmnd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <scsi/scsi_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <scsi/scsi_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <scsi/scsi_transport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <scsi/scsi_transport_fc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <scsi/scsi_bsg_fc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <asm/ccwdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <asm/debug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <asm/ebcdic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <asm/sysinfo.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include "zfcp_fsf.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include "zfcp_fc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include "zfcp_qdio.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /********************* FSF SPECIFIC DEFINES *********************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /* ATTENTION: value must not be used by hardware */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define FSF_QTCB_UNSOLICITED_STATUS 0x6305
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /*************** ADAPTER/PORT/UNIT AND FSF_REQ STATUS FLAGS ******************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * Note, the leftmost 12 status bits (3 nibbles) are common among adapter, port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * and unit. This is a mask for bitwise 'and' with status values.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define ZFCP_COMMON_FLAGS 0xfff00000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /* common status bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define ZFCP_STATUS_COMMON_RUNNING 0x40000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define ZFCP_STATUS_COMMON_ERP_FAILED 0x20000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define ZFCP_STATUS_COMMON_UNBLOCKED 0x10000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define ZFCP_STATUS_COMMON_OPEN 0x04000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define ZFCP_STATUS_COMMON_ERP_INUSE 0x01000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define ZFCP_STATUS_COMMON_ACCESS_DENIED 0x00800000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define ZFCP_STATUS_COMMON_ACCESS_BOXED 0x00400000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define ZFCP_STATUS_COMMON_NOESC 0x00200000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /* adapter status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #define ZFCP_STATUS_ADAPTER_MB_ACT 0x00000001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #define ZFCP_STATUS_ADAPTER_QDIOUP 0x00000002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #define ZFCP_STATUS_ADAPTER_SIOSL_ISSUED 0x00000004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define ZFCP_STATUS_ADAPTER_XCONFIG_OK 0x00000008
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define ZFCP_STATUS_ADAPTER_HOST_CON_INIT 0x00000010
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #define ZFCP_STATUS_ADAPTER_SUSPENDED 0x00000040
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED 0x00000400
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) /* remote port status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define ZFCP_STATUS_PORT_PHYS_OPEN 0x00000001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define ZFCP_STATUS_PORT_LINK_TEST 0x00000002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /* FSF request status (this does not have a common part) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #define ZFCP_STATUS_FSFREQ_ERROR 0x00000008
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define ZFCP_STATUS_FSFREQ_CLEANUP 0x00000010
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #define ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED 0x00000040
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #define ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED 0x00000080
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define ZFCP_STATUS_FSFREQ_TMFUNCFAILED 0x00000200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #define ZFCP_STATUS_FSFREQ_DISMISSED 0x00001000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #define ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE 0x00020000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) /************************* STRUCTURE DEFINITIONS *****************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * enum zfcp_erp_act_type - Type of ERP action object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * @ZFCP_ERP_ACTION_REOPEN_LUN: LUN recovery.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * @ZFCP_ERP_ACTION_REOPEN_PORT: Port recovery.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * @ZFCP_ERP_ACTION_REOPEN_PORT_FORCED: Forced port recovery.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * @ZFCP_ERP_ACTION_REOPEN_ADAPTER: Adapter recovery.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * Values must fit into u8 because of code dependencies:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * zfcp_dbf_rec_trig(), &zfcp_dbf_rec_trigger.want, &zfcp_dbf_rec_trigger.need;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * zfcp_dbf_rec_run_lvl(), zfcp_dbf_rec_run(), &zfcp_dbf_rec_running.rec_action.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) enum zfcp_erp_act_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) ZFCP_ERP_ACTION_REOPEN_LUN = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) ZFCP_ERP_ACTION_REOPEN_PORT = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) ZFCP_ERP_ACTION_REOPEN_PORT_FORCED = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) ZFCP_ERP_ACTION_REOPEN_ADAPTER = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * Values must fit into u16 because of code dependencies:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * zfcp_dbf_rec_run_lvl(), zfcp_dbf_rec_run(), zfcp_dbf_rec_run_wka(),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * &zfcp_dbf_rec_running.rec_step.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) enum zfcp_erp_steps {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) ZFCP_ERP_STEP_UNINITIALIZED = 0x0000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) ZFCP_ERP_STEP_PHYS_PORT_CLOSING = 0x0010,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) ZFCP_ERP_STEP_PORT_CLOSING = 0x0100,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) ZFCP_ERP_STEP_PORT_OPENING = 0x0800,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) ZFCP_ERP_STEP_LUN_CLOSING = 0x1000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) ZFCP_ERP_STEP_LUN_OPENING = 0x2000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) struct zfcp_erp_action {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) enum zfcp_erp_act_type type; /* requested action code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct zfcp_adapter *adapter; /* device which should be recovered */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct zfcp_port *port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct scsi_device *sdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) u32 status; /* recovery status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) enum zfcp_erp_steps step; /* active step of this erp action */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) unsigned long fsf_req_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) struct timer_list timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) /* holds various memory pools of an adapter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) struct zfcp_adapter_mempool {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) mempool_t *erp_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) mempool_t *gid_pn_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) mempool_t *scsi_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) mempool_t *scsi_abort;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) mempool_t *status_read_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) mempool_t *sr_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) mempool_t *gid_pn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) mempool_t *qtcb_pool;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) struct zfcp_adapter {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) struct kref ref;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) u64 peer_wwnn; /* P2P peer WWNN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) u64 peer_wwpn; /* P2P peer WWPN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) u32 peer_d_id; /* P2P peer D_ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) struct ccw_device *ccw_device; /* S/390 ccw device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) struct zfcp_qdio *qdio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) u32 hydra_version; /* Hydra version */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) u32 fsf_lic_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) u32 adapter_features; /* FCP channel features */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) u32 connection_features; /* host connection features */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) u32 hardware_version; /* of FCP channel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) u32 fc_security_algorithms; /* of FCP channel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) u32 fc_security_algorithms_old; /* of FCP channel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) u16 timer_ticks; /* time int for a tick */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) struct Scsi_Host *scsi_host; /* Pointer to mid-layer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) struct list_head port_list; /* remote port list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) rwlock_t port_list_lock; /* port list lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) unsigned long req_no; /* unique FSF req number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) struct zfcp_reqlist *req_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) u32 fsf_req_seq_no; /* FSF cmnd seq number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) rwlock_t abort_lock; /* Protects against SCSI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) stack abort/command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) completion races */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) atomic_t stat_miss; /* # missing status reads*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) unsigned int stat_read_buf_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) struct work_struct stat_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) atomic_t status; /* status of this adapter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) struct list_head erp_ready_head; /* error recovery for this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) adapter/devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) wait_queue_head_t erp_ready_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) struct list_head erp_running_head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) rwlock_t erp_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) wait_queue_head_t erp_done_wqh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) struct zfcp_erp_action erp_action; /* pending error recovery */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) atomic_t erp_counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) u32 erp_total_count; /* total nr of enqueued erp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) actions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) u32 erp_low_mem_count; /* nr of erp actions waiting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) for memory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) struct task_struct *erp_thread;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) struct zfcp_fc_wka_ports *gs; /* generic services */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) struct zfcp_dbf *dbf; /* debug traces */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) struct zfcp_adapter_mempool pool; /* Adapter memory pools */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) struct fc_host_statistics *fc_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) struct fsf_qtcb_bottom_port *stats_reset_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) unsigned long stats_reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) struct delayed_work scan_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) struct work_struct ns_up_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) struct service_level service_level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) struct workqueue_struct *work_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) struct device_dma_parameters dma_parms;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) struct zfcp_fc_events events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) unsigned long next_port_scan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) struct zfcp_diag_adapter *diagnostics;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) struct zfcp_port {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct device dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) struct fc_rport *rport; /* rport of fc transport class */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) struct list_head list; /* list of remote ports */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct zfcp_adapter *adapter; /* adapter used to access port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) struct list_head unit_list; /* head of logical unit list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) rwlock_t unit_list_lock; /* unit list lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) atomic_t units; /* zfcp_unit count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) atomic_t status; /* status of this remote port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) u64 wwnn; /* WWNN if known */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) u64 wwpn; /* WWPN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) u32 d_id; /* D_ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) u32 handle; /* handle assigned by FSF */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) struct zfcp_erp_action erp_action; /* pending error recovery */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) atomic_t erp_counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) u32 maxframe_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) u32 supported_classes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) u32 connection_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) u32 connection_info_old;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) struct work_struct gid_pn_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) struct work_struct test_link_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) struct work_struct rport_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) enum { RPORT_NONE, RPORT_ADD, RPORT_DEL } rport_task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) unsigned int starget_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) struct zfcp_latency_record {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) u32 min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) u32 max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) u64 sum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct zfcp_latency_cont {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) struct zfcp_latency_record channel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) struct zfcp_latency_record fabric;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) u64 counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) struct zfcp_latencies {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) struct zfcp_latency_cont read;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) struct zfcp_latency_cont write;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) struct zfcp_latency_cont cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) * struct zfcp_unit - LUN configured via zfcp sysfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) * @dev: struct device for sysfs representation and reference counting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) * @list: entry in LUN/unit list per zfcp_port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) * @port: reference to zfcp_port where this LUN is configured
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) * @fcp_lun: 64 bit LUN value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) * @scsi_work: for running scsi_scan_target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) * This is the representation of a LUN that has been configured for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) * usage. The main data here is the 64 bit LUN value, data for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) * running I/O and recovery is in struct zfcp_scsi_dev.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) struct zfcp_unit {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) struct device dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) struct zfcp_port *port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) u64 fcp_lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) struct work_struct scsi_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) * struct zfcp_scsi_dev - zfcp data per SCSI device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) * @status: zfcp internal status flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) * @lun_handle: handle from "open lun" for issuing FSF requests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) * @erp_action: zfcp erp data for opening and recovering this LUN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) * @erp_counter: zfcp erp counter for this LUN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * @latencies: FSF channel and fabric latencies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) * @port: zfcp_port where this LUN belongs to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) struct zfcp_scsi_dev {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) atomic_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) u32 lun_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) struct zfcp_erp_action erp_action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) atomic_t erp_counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) struct zfcp_latencies latencies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) struct zfcp_port *port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) * sdev_to_zfcp - Access zfcp LUN data for SCSI device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) * @sdev: scsi_device where to get the zfcp_scsi_dev pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) static inline struct zfcp_scsi_dev *sdev_to_zfcp(struct scsi_device *sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) return scsi_transport_device_data(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) * zfcp_scsi_dev_lun - Return SCSI device LUN as 64 bit FCP LUN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) * @sdev: SCSI device where to get the LUN from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) static inline u64 zfcp_scsi_dev_lun(struct scsi_device *sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) u64 fcp_lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) int_to_scsilun(sdev->lun, (struct scsi_lun *)&fcp_lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) return fcp_lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) * struct zfcp_fsf_req - basic FSF request structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) * @list: list of FSF requests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) * @req_id: unique request ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) * @adapter: adapter this request belongs to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) * @qdio_req: qdio queue related values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) * @completion: used to signal the completion of the request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) * @status: status of the request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) * @qtcb: associated QTCB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) * @data: private data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) * @timer: timer data of this request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) * @erp_action: reference to erp action if request issued on behalf of ERP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) * @pool: reference to memory pool if used for this request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) * @issued: time when request was send (STCK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) * @handler: handler which should be called to process response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) struct zfcp_fsf_req {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) unsigned long req_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) struct zfcp_adapter *adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) struct zfcp_qdio_req qdio_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) struct completion completion;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) u32 status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) struct fsf_qtcb *qtcb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) void *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) struct timer_list timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) struct zfcp_erp_action *erp_action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) mempool_t *pool;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) unsigned long long issued;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) void (*handler)(struct zfcp_fsf_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) static inline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) int zfcp_adapter_multi_buffer_active(struct zfcp_adapter *adapter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) return atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_MB_ACT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) static inline bool zfcp_fsf_req_is_status_read_buffer(struct zfcp_fsf_req *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) return req->qtcb == NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) #endif /* ZFCP_DEF_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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