| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Martin Schwidefsky | 357 | 38.02% | 5 | 6.33% |
| Christof Schmitt | 268 | 28.54% | 25 | 31.65% |
| Swen Schillig | 83 | 8.84% | 14 | 17.72% |
| Andrew Morton | 47 | 5.01% | 2 | 2.53% |
| Steffen Maier | 44 | 4.69% | 8 | 10.13% |
| Andreas Herrmann | 30 | 3.19% | 5 | 6.33% |
| Sven Schuetz | 23 | 2.45% | 3 | 3.80% |
| Jens Remus | 15 | 1.60% | 3 | 3.80% |
| Heiko Carstens | 14 | 1.49% | 1 | 1.27% |
| Benjamin Block | 12 | 1.28% | 3 | 3.80% |
| Maxim Shchetynin | 12 | 1.28% | 2 | 2.53% |
| James Bottomley | 9 | 0.96% | 1 | 1.27% |
| Ralph Wuerthner | 6 | 0.64% | 1 | 1.27% |
| Volker Sameske | 5 | 0.53% | 1 | 1.27% |
| Martin Peschke | 5 | 0.53% | 1 | 1.27% |
| Julian Wiedmann | 4 | 0.43% | 1 | 1.27% |
| FUJITA Tomonori | 3 | 0.32% | 1 | 1.27% |
| Greg Kroah-Hartman | 1 | 0.11% | 1 | 1.27% |
| Felix Beck | 1 | 0.11% | 1 | 1.27% |
| Total | 939 | 79 |
/* SPDX-License-Identifier: GPL-2.0 */ /* * zfcp device driver * * Global definitions for the zfcp device driver. * * Copyright IBM Corp. 2002, 2020 */ #ifndef ZFCP_DEF_H #define ZFCP_DEF_H /*************************** INCLUDES *****************************************/ #include <linux/init.h> #include <linux/moduleparam.h> #include <linux/major.h> #include <linux/blkdev.h> #include <linux/delay.h> #include <linux/timer.h> #include <linux/slab.h> #include <linux/mempool.h> #include <linux/syscalls.h> #include <linux/scatterlist.h> #include <linux/ioctl.h> #include <scsi/fc/fc_fs.h> #include <scsi/fc/fc_gs.h> #include <scsi/scsi.h> #include <scsi/scsi_tcq.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_device.h> #include <scsi/scsi_host.h> #include <scsi/scsi_transport.h> #include <scsi/scsi_transport_fc.h> #include <scsi/scsi_bsg_fc.h> #include <asm/ccwdev.h> #include <asm/debug.h> #include <asm/ebcdic.h> #include <asm/sysinfo.h> #include "zfcp_fsf.h" #include "zfcp_fc.h" #include "zfcp_qdio.h" /********************* FSF SPECIFIC DEFINES *********************************/ /* ATTENTION: value must not be used by hardware */ #define FSF_QTCB_UNSOLICITED_STATUS 0x6305 /*************** ADAPTER/PORT/UNIT AND FSF_REQ STATUS FLAGS ******************/ /* * Note, the leftmost 12 status bits (3 nibbles) are common among adapter, port * and unit. This is a mask for bitwise 'and' with status values. */ #define ZFCP_COMMON_FLAGS 0xfff00000 /* common status bits */ #define ZFCP_STATUS_COMMON_RUNNING 0x40000000 #define ZFCP_STATUS_COMMON_ERP_FAILED 0x20000000 #define ZFCP_STATUS_COMMON_UNBLOCKED 0x10000000 #define ZFCP_STATUS_COMMON_OPEN 0x04000000 #define ZFCP_STATUS_COMMON_ERP_INUSE 0x01000000 #define ZFCP_STATUS_COMMON_ACCESS_DENIED 0x00800000 #define ZFCP_STATUS_COMMON_ACCESS_BOXED 0x00400000 #define ZFCP_STATUS_COMMON_NOESC 0x00200000 /* adapter status */ #define ZFCP_STATUS_ADAPTER_MB_ACT 0x00000001 #define ZFCP_STATUS_ADAPTER_QDIOUP 0x00000002 #define ZFCP_STATUS_ADAPTER_SIOSL_ISSUED 0x00000004 #define ZFCP_STATUS_ADAPTER_XCONFIG_OK 0x00000008 #define ZFCP_STATUS_ADAPTER_HOST_CON_INIT 0x00000010 #define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100 #define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200 #define ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED 0x00000400 /* remote port status */ #define ZFCP_STATUS_PORT_PHYS_OPEN 0x00000001 #define ZFCP_STATUS_PORT_LINK_TEST 0x00000002 /* FSF request status (this does not have a common part) */ #define ZFCP_STATUS_FSFREQ_ERROR 0x00000008 #define ZFCP_STATUS_FSFREQ_CLEANUP 0x00000010 #define ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED 0x00000040 #define ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED 0x00000080 #define ZFCP_STATUS_FSFREQ_TMFUNCFAILED 0x00000200 #define ZFCP_STATUS_FSFREQ_DISMISSED 0x00001000 #define ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE 0x00020000 /************************* STRUCTURE DEFINITIONS *****************************/ /** * enum zfcp_erp_act_type - Type of ERP action object. * @ZFCP_ERP_ACTION_REOPEN_LUN: LUN recovery. * @ZFCP_ERP_ACTION_REOPEN_PORT: Port recovery. * @ZFCP_ERP_ACTION_REOPEN_PORT_FORCED: Forced port recovery. * @ZFCP_ERP_ACTION_REOPEN_ADAPTER: Adapter recovery. * * Values must fit into u8 because of code dependencies: * zfcp_dbf_rec_trig(), &zfcp_dbf_rec_trigger.want, &zfcp_dbf_rec_trigger.need; * zfcp_dbf_rec_run_lvl(), zfcp_dbf_rec_run(), &zfcp_dbf_rec_running.rec_action. */ enum zfcp_erp_act_type { ZFCP_ERP_ACTION_REOPEN_LUN = 1, ZFCP_ERP_ACTION_REOPEN_PORT = 2, ZFCP_ERP_ACTION_REOPEN_PORT_FORCED = 3, ZFCP_ERP_ACTION_REOPEN_ADAPTER = 4, }; /* * Values must fit into u16 because of code dependencies: * zfcp_dbf_rec_run_lvl(), zfcp_dbf_rec_run(), zfcp_dbf_rec_run_wka(), * &zfcp_dbf_rec_running.rec_step. */ enum zfcp_erp_steps { ZFCP_ERP_STEP_UNINITIALIZED = 0x0000, ZFCP_ERP_STEP_PHYS_PORT_CLOSING = 0x0010, ZFCP_ERP_STEP_PORT_CLOSING = 0x0100, ZFCP_ERP_STEP_PORT_OPENING = 0x0800, ZFCP_ERP_STEP_LUN_CLOSING = 0x1000, ZFCP_ERP_STEP_LUN_OPENING = 0x2000, }; struct zfcp_erp_action { struct list_head list; enum zfcp_erp_act_type type; /* requested action code */ struct zfcp_adapter *adapter; /* device which should be recovered */ struct zfcp_port *port; struct scsi_device *sdev; u32 status; /* recovery status */ enum zfcp_erp_steps step; /* active step of this erp action */ u64 fsf_req_id; struct timer_list timer; }; /* holds various memory pools of an adapter */ struct zfcp_adapter_mempool { mempool_t *erp_req; mempool_t *gid_pn_req; mempool_t *scsi_req; mempool_t *scsi_abort; mempool_t *status_read_req; mempool_t *sr_data; mempool_t *gid_pn; mempool_t *qtcb_pool; }; struct zfcp_adapter { struct kref ref; u64 peer_wwnn; /* P2P peer WWNN */ u64 peer_wwpn; /* P2P peer WWPN */ u32 peer_d_id; /* P2P peer D_ID */ struct ccw_device *ccw_device; /* S/390 ccw device */ struct zfcp_qdio *qdio; u32 hydra_version; /* Hydra version */ u32 fsf_lic_version; u32 adapter_features; /* FCP channel features */ u32 connection_features; /* host connection features */ u32 hardware_version; /* of FCP channel */ u32 fc_security_algorithms; /* of FCP channel */ u32 fc_security_algorithms_old; /* of FCP channel */ u16 timer_ticks; /* time int for a tick */ struct Scsi_Host *scsi_host; /* Pointer to mid-layer */ struct list_head port_list; /* remote port list */ rwlock_t port_list_lock; /* port list lock */ u64 req_no; /* unique FSF req number */ struct zfcp_reqlist *req_list; u32 fsf_req_seq_no; /* FSF cmnd seq number */ rwlock_t abort_lock; /* Protects against SCSI stack abort/command completion races */ atomic_t stat_miss; /* # missing status reads*/ unsigned int stat_read_buf_num; struct work_struct stat_work; atomic_t status; /* status of this adapter */ struct list_head erp_ready_head; /* error recovery for this adapter/devices */ wait_queue_head_t erp_ready_wq; struct list_head erp_running_head; rwlock_t erp_lock; wait_queue_head_t erp_done_wqh; struct zfcp_erp_action erp_action; /* pending error recovery */ atomic_t erp_counter; u32 erp_total_count; /* total nr of enqueued erp actions */ u32 erp_low_mem_count; /* nr of erp actions waiting for memory */ struct task_struct *erp_thread; struct zfcp_fc_wka_ports *gs; /* generic services */ struct zfcp_dbf *dbf; /* debug traces */ struct zfcp_adapter_mempool pool; /* Adapter memory pools */ struct fc_host_statistics *fc_stats; struct fsf_qtcb_bottom_port *stats_reset_data; unsigned long stats_reset; struct delayed_work scan_work; struct work_struct ns_up_work; struct service_level service_level; struct workqueue_struct *work_queue; struct device_dma_parameters dma_parms; struct zfcp_fc_events events; unsigned long next_port_scan; struct zfcp_diag_adapter *diagnostics; struct work_struct version_change_lost_work; }; struct zfcp_port { struct device dev; struct fc_rport *rport; /* rport of fc transport class */ struct list_head list; /* list of remote ports */ struct zfcp_adapter *adapter; /* adapter used to access port */ struct list_head unit_list; /* head of logical unit list */ rwlock_t unit_list_lock; /* unit list lock */ atomic_t units; /* zfcp_unit count */ atomic_t status; /* status of this remote port */ u64 wwnn; /* WWNN if known */ u64 wwpn; /* WWPN */ u32 d_id; /* D_ID */ u32 handle; /* handle assigned by FSF */ struct zfcp_erp_action erp_action; /* pending error recovery */ atomic_t erp_counter; u32 maxframe_size; u32 supported_classes; u32 connection_info; u32 connection_info_old; struct work_struct gid_pn_work; struct work_struct test_link_work; struct work_struct rport_work; enum { RPORT_NONE, RPORT_ADD, RPORT_DEL } rport_task; unsigned int starget_id; }; struct zfcp_latency_record { u32 min; u32 max; u64 sum; }; struct zfcp_latency_cont { struct zfcp_latency_record channel; struct zfcp_latency_record fabric; u64 counter; }; struct zfcp_latencies { struct zfcp_latency_cont read; struct zfcp_latency_cont write; struct zfcp_latency_cont cmd; spinlock_t lock; }; /** * struct zfcp_unit - LUN configured via zfcp sysfs * @dev: struct device for sysfs representation and reference counting * @list: entry in LUN/unit list per zfcp_port * @port: reference to zfcp_port where this LUN is configured * @fcp_lun: 64 bit LUN value * @scsi_work: for running scsi_scan_target * * This is the representation of a LUN that has been configured for * usage. The main data here is the 64 bit LUN value, data for * running I/O and recovery is in struct zfcp_scsi_dev. */ struct zfcp_unit { struct device dev; struct list_head list; struct zfcp_port *port; u64 fcp_lun; struct work_struct scsi_work; }; /** * struct zfcp_scsi_dev - zfcp data per SCSI device * @status: zfcp internal status flags * @lun_handle: handle from "open lun" for issuing FSF requests * @erp_action: zfcp erp data for opening and recovering this LUN * @erp_counter: zfcp erp counter for this LUN * @latencies: FSF channel and fabric latencies * @port: zfcp_port where this LUN belongs to */ struct zfcp_scsi_dev { atomic_t status; u32 lun_handle; struct zfcp_erp_action erp_action; atomic_t erp_counter; struct zfcp_latencies latencies; struct zfcp_port *port; }; /** * sdev_to_zfcp - Access zfcp LUN data for SCSI device * @sdev: scsi_device where to get the zfcp_scsi_dev pointer */ static inline struct zfcp_scsi_dev *sdev_to_zfcp(struct scsi_device *sdev) { return scsi_transport_device_data(sdev); } /** * zfcp_scsi_dev_lun - Return SCSI device LUN as 64 bit FCP LUN * @sdev: SCSI device where to get the LUN from */ static inline u64 zfcp_scsi_dev_lun(struct scsi_device *sdev) { u64 fcp_lun; int_to_scsilun(sdev->lun, (struct scsi_lun *)&fcp_lun); return fcp_lun; } /** * struct zfcp_fsf_req - basic FSF request structure * @list: list of FSF requests * @req_id: unique request ID * @adapter: adapter this request belongs to * @qdio_req: qdio queue related values * @completion: used to signal the completion of the request * @status: status of the request * @qtcb: associated QTCB * @data: private data * @timer: timer data of this request * @erp_action: reference to erp action if request issued on behalf of ERP * @pool: reference to memory pool if used for this request * @issued: time when request was send (STCK) * @handler: handler which should be called to process response */ struct zfcp_fsf_req { struct list_head list; u64 req_id; struct zfcp_adapter *adapter; struct zfcp_qdio_req qdio_req; struct completion completion; u32 status; struct fsf_qtcb *qtcb; void *data; struct timer_list timer; struct zfcp_erp_action *erp_action; mempool_t *pool; unsigned long long issued; void (*handler)(struct zfcp_fsf_req *); }; static inline int zfcp_adapter_multi_buffer_active(struct zfcp_adapter *adapter) { return atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_MB_ACT; } static inline bool zfcp_fsf_req_is_status_read_buffer(struct zfcp_fsf_req *req) { return req->qtcb == NULL; } #endif /* ZFCP_DEF_H */
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