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TOMOYO Linux Cross Reference
Linux/include/scsi/libsas.h

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  1 /*
  2  * SAS host prototypes and structures header file
  3  *
  4  * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
  5  * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
  6  *
  7  * This file is licensed under GPLv2.
  8  *
  9  * This program is free software; you can redistribute it and/or
 10  * modify it under the terms of the GNU General Public License as
 11  * published by the Free Software Foundation; either version 2 of the
 12  * License, or (at your option) any later version.
 13  *
 14  * This program is distributed in the hope that it will be useful, but
 15  * WITHOUT ANY WARRANTY; without even the implied warranty of
 16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 17  * General Public License for more details.
 18  *
 19  * You should have received a copy of the GNU General Public License
 20  * along with this program; if not, write to the Free Software
 21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 22  * USA
 23  *
 24  */
 25 
 26 #ifndef _LIBSAS_H_
 27 #define _LIBSAS_H_
 28 
 29 
 30 #include <linux/timer.h>
 31 #include <linux/pci.h>
 32 #include <scsi/sas.h>
 33 #include <linux/libata.h>
 34 #include <linux/list.h>
 35 #include <scsi/scsi_device.h>
 36 #include <scsi/scsi_cmnd.h>
 37 #include <scsi/scsi_transport_sas.h>
 38 #include <linux/scatterlist.h>
 39 #include <linux/slab.h>
 40 
 41 struct block_device;
 42 
 43 enum sas_class {
 44         SAS,
 45         EXPANDER
 46 };
 47 
 48 enum sas_phy_role {
 49         PHY_ROLE_NONE = 0,
 50         PHY_ROLE_TARGET = 0x40,
 51         PHY_ROLE_INITIATOR = 0x80,
 52 };
 53 
 54 enum sas_phy_type {
 55         PHY_TYPE_PHYSICAL,
 56         PHY_TYPE_VIRTUAL
 57 };
 58 
 59 /* The events are mnemonically described in sas_dump.c
 60  * so when updating/adding events here, please also
 61  * update the other file too.
 62  */
 63 enum port_event {
 64         PORTE_BYTES_DMAED     = 0U,
 65         PORTE_BROADCAST_RCVD,
 66         PORTE_LINK_RESET_ERR,
 67         PORTE_TIMER_EVENT,
 68         PORTE_HARD_RESET,
 69         PORT_NUM_EVENTS,
 70 };
 71 
 72 enum phy_event {
 73         PHYE_LOSS_OF_SIGNAL   = 0U,
 74         PHYE_OOB_DONE,
 75         PHYE_OOB_ERROR,
 76         PHYE_SPINUP_HOLD,             /* hot plug SATA, no COMWAKE sent */
 77         PHYE_RESUME_TIMEOUT,
 78         PHYE_SHUTDOWN,
 79         PHY_NUM_EVENTS,
 80 };
 81 
 82 enum discover_event {
 83         DISCE_DISCOVER_DOMAIN   = 0U,
 84         DISCE_REVALIDATE_DOMAIN,
 85         DISCE_SUSPEND,
 86         DISCE_RESUME,
 87         DISC_NUM_EVENTS,
 88 };
 89 
 90 /* ---------- Expander Devices ---------- */
 91 
 92 #define to_dom_device(_obj) container_of(_obj, struct domain_device, dev_obj)
 93 #define to_dev_attr(_attr)  container_of(_attr, struct domain_dev_attribute,\
 94                                          attr)
 95 
 96 enum routing_attribute {
 97         DIRECT_ROUTING,
 98         SUBTRACTIVE_ROUTING,
 99         TABLE_ROUTING,
100 };
101 
102 enum ex_phy_state {
103         PHY_EMPTY,
104         PHY_VACANT,
105         PHY_NOT_PRESENT,
106         PHY_DEVICE_DISCOVERED
107 };
108 
109 struct ex_phy {
110         int    phy_id;
111 
112         enum ex_phy_state phy_state;
113 
114         enum sas_device_type attached_dev_type;
115         enum sas_linkrate linkrate;
116 
117         u8   attached_sata_host:1;
118         u8   attached_sata_dev:1;
119         u8   attached_sata_ps:1;
120 
121         enum sas_protocol attached_tproto;
122         enum sas_protocol attached_iproto;
123 
124         u8   attached_sas_addr[SAS_ADDR_SIZE];
125         u8   attached_phy_id;
126 
127         int phy_change_count;
128         enum routing_attribute routing_attr;
129         u8   virtual:1;
130 
131         int  last_da_index;
132 
133         struct sas_phy *phy;
134         struct sas_port *port;
135 };
136 
137 struct expander_device {
138         struct list_head children;
139 
140         int    ex_change_count;
141         u16    max_route_indexes;
142         u8     num_phys;
143 
144         u8     t2t_supp:1;
145         u8     configuring:1;
146         u8     conf_route_table:1;
147 
148         u8     enclosure_logical_id[8];
149 
150         struct ex_phy *ex_phy;
151         struct sas_port *parent_port;
152 
153         struct mutex cmd_mutex;
154 };
155 
156 /* ---------- SATA device ---------- */
157 #define ATA_RESP_FIS_SIZE 24
158 
159 struct sata_device {
160         unsigned int class;
161         u8     port_no;        /* port number, if this is a PM (Port) */
162 
163         struct ata_port *ap;
164         struct ata_host *ata_host;
165         struct smp_resp rps_resp ____cacheline_aligned; /* report_phy_sata_resp */
166         u8     fis[ATA_RESP_FIS_SIZE];
167 };
168 
169 struct ssp_device {
170         struct list_head eh_list_node; /* pending a user requested eh action */
171         struct scsi_lun reset_lun;
172 };
173 
174 enum {
175         SAS_DEV_GONE,
176         SAS_DEV_FOUND, /* device notified to lldd */
177         SAS_DEV_DESTROY,
178         SAS_DEV_EH_PENDING,
179         SAS_DEV_LU_RESET,
180         SAS_DEV_RESET,
181 };
182 
183 struct domain_device {
184         spinlock_t done_lock;
185         enum sas_device_type dev_type;
186 
187         enum sas_linkrate linkrate;
188         enum sas_linkrate min_linkrate;
189         enum sas_linkrate max_linkrate;
190 
191         int  pathways;
192 
193         struct domain_device *parent;
194         struct list_head siblings; /* devices on the same level */
195         struct asd_sas_port *port;        /* shortcut to root of the tree */
196         struct sas_phy *phy;
197 
198         struct list_head dev_list_node;
199         struct list_head disco_list_node; /* awaiting probe or destruct */
200 
201         enum sas_protocol    iproto;
202         enum sas_protocol    tproto;
203 
204         struct sas_rphy *rphy;
205 
206         u8  sas_addr[SAS_ADDR_SIZE];
207         u8  hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
208 
209         u8  frame_rcvd[32];
210 
211         union {
212                 struct expander_device ex_dev;
213                 struct sata_device     sata_dev; /* STP & directly attached */
214                 struct ssp_device      ssp_dev;
215         };
216 
217         void *lldd_dev;
218         unsigned long state;
219         struct kref kref;
220 };
221 
222 struct sas_work {
223         struct list_head drain_node;
224         struct work_struct work;
225 };
226 
227 static inline void INIT_SAS_WORK(struct sas_work *sw, void (*fn)(struct work_struct *))
228 {
229         INIT_WORK(&sw->work, fn);
230         INIT_LIST_HEAD(&sw->drain_node);
231 }
232 
233 struct sas_discovery_event {
234         struct sas_work work;
235         struct asd_sas_port *port;
236 };
237 
238 static inline struct sas_discovery_event *to_sas_discovery_event(struct work_struct *work)
239 {
240         struct sas_discovery_event *ev = container_of(work, typeof(*ev), work.work);
241 
242         return ev;
243 }
244 
245 struct sas_discovery {
246         struct sas_discovery_event disc_work[DISC_NUM_EVENTS];
247         unsigned long    pending;
248         u8     fanout_sas_addr[8];
249         u8     eeds_a[8];
250         u8     eeds_b[8];
251         int    max_level;
252 };
253 
254 /* The port struct is Class:RW, driver:RO */
255 struct asd_sas_port {
256 /* private: */
257         struct sas_discovery disc;
258         struct domain_device *port_dev;
259         spinlock_t dev_list_lock;
260         struct list_head dev_list;
261         struct list_head disco_list;
262         struct list_head destroy_list;
263         struct list_head sas_port_del_list;
264         enum   sas_linkrate linkrate;
265 
266         struct sas_work work;
267         int suspended;
268 
269 /* public: */
270         int id;
271 
272         enum sas_class   class;
273         u8               sas_addr[SAS_ADDR_SIZE];
274         u8               attached_sas_addr[SAS_ADDR_SIZE];
275         enum sas_protocol   iproto;
276         enum sas_protocol   tproto;
277 
278         enum sas_oob_mode oob_mode;
279 
280         spinlock_t       phy_list_lock;
281         struct list_head phy_list;
282         int              num_phys;
283         u32              phy_mask;
284 
285         struct sas_ha_struct *ha;
286 
287         struct sas_port *port;
288 
289         void *lldd_port;          /* not touched by the sas class code */
290 };
291 
292 struct asd_sas_event {
293         struct sas_work work;
294         struct asd_sas_phy *phy;
295         int event;
296 };
297 
298 static inline struct asd_sas_event *to_asd_sas_event(struct work_struct *work)
299 {
300         struct asd_sas_event *ev = container_of(work, typeof(*ev), work.work);
301 
302         return ev;
303 }
304 
305 static inline void INIT_SAS_EVENT(struct asd_sas_event *ev,
306                 void (*fn)(struct work_struct *),
307                 struct asd_sas_phy *phy, int event)
308 {
309         INIT_SAS_WORK(&ev->work, fn);
310         ev->phy = phy;
311         ev->event = event;
312 }
313 
314 #define SAS_PHY_SHUTDOWN_THRES   1024
315 
316 /* The phy pretty much is controlled by the LLDD.
317  * The class only reads those fields.
318  */
319 struct asd_sas_phy {
320 /* private: */
321         atomic_t event_nr;
322         int in_shutdown;
323         int error;
324         int suspended;
325 
326         struct sas_phy *phy;
327 
328 /* public: */
329         /* The following are class:RO, driver:R/W */
330         int            enabled;   /* must be set */
331 
332         int            id;        /* must be set */
333         enum sas_class class;
334         enum sas_protocol iproto;
335         enum sas_protocol tproto;
336 
337         enum sas_phy_type  type;
338         enum sas_phy_role  role;
339         enum sas_oob_mode  oob_mode;
340         enum sas_linkrate linkrate;
341 
342         u8   *sas_addr;           /* must be set */
343         u8   attached_sas_addr[SAS_ADDR_SIZE]; /* class:RO, driver: R/W */
344 
345         spinlock_t     frame_rcvd_lock;
346         u8             *frame_rcvd; /* must be set */
347         int            frame_rcvd_size;
348 
349         spinlock_t     sas_prim_lock;
350         u32            sas_prim;
351 
352         struct list_head port_phy_el; /* driver:RO */
353         struct asd_sas_port      *port; /* Class:RW, driver: RO */
354 
355         struct sas_ha_struct *ha; /* may be set; the class sets it anyway */
356 
357         void *lldd_phy;           /* not touched by the sas_class_code */
358 };
359 
360 struct scsi_core {
361         struct Scsi_Host *shost;
362 
363 };
364 
365 enum sas_ha_state {
366         SAS_HA_REGISTERED,
367         SAS_HA_DRAINING,
368         SAS_HA_ATA_EH_ACTIVE,
369         SAS_HA_FROZEN,
370 };
371 
372 struct sas_ha_struct {
373 /* private: */
374         struct list_head  defer_q; /* work queued while draining */
375         struct mutex      drain_mutex;
376         unsigned long     state;
377         spinlock_t        lock;
378         int               eh_active;
379         wait_queue_head_t eh_wait_q;
380         struct list_head  eh_dev_q;
381 
382         struct mutex disco_mutex;
383 
384         struct scsi_core core;
385 
386 /* public: */
387         char *sas_ha_name;
388         struct device *dev;       /* should be set */
389         struct module *lldd_module; /* should be set */
390 
391         struct workqueue_struct *event_q;
392         struct workqueue_struct *disco_q;
393 
394         u8 *sas_addr;             /* must be set */
395         u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
396 
397         spinlock_t      phy_port_lock;
398         struct asd_sas_phy  **sas_phy; /* array of valid pointers, must be set */
399         struct asd_sas_port **sas_port; /* array of valid pointers, must be set */
400         int             num_phys; /* must be set, gt 0, static */
401 
402         int strict_wide_ports; /* both sas_addr and attached_sas_addr must match
403                                 * their siblings when forming wide ports */
404 
405         /* LLDD calls these to notify the class of an event. */
406         int (*notify_port_event)(struct asd_sas_phy *, enum port_event);
407         int (*notify_phy_event)(struct asd_sas_phy *, enum phy_event);
408 
409         void *lldd_ha;            /* not touched by sas class code */
410 
411         struct list_head eh_done_q;  /* complete via scsi_eh_flush_done_q */
412         struct list_head eh_ata_q; /* scmds to promote from sas to ata eh */
413 
414         int event_thres;
415 };
416 
417 #define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata)
418 
419 static inline struct domain_device *
420 starget_to_domain_dev(struct scsi_target *starget) {
421         return starget->hostdata;
422 }
423 
424 static inline struct domain_device *
425 sdev_to_domain_dev(struct scsi_device *sdev) {
426         return starget_to_domain_dev(sdev->sdev_target);
427 }
428 
429 static inline struct ata_device *sas_to_ata_dev(struct domain_device *dev)
430 {
431         return &dev->sata_dev.ap->link.device[0];
432 }
433 
434 static inline struct domain_device *
435 cmd_to_domain_dev(struct scsi_cmnd *cmd)
436 {
437         return sdev_to_domain_dev(cmd->device);
438 }
439 
440 void sas_hash_addr(u8 *hashed, const u8 *sas_addr);
441 
442 /* Before calling a notify event, LLDD should use this function
443  * when the link is severed (possibly from its tasklet).
444  * The idea is that the Class only reads those, while the LLDD,
445  * can R/W these (thus avoiding a race).
446  */
447 static inline void sas_phy_disconnected(struct asd_sas_phy *phy)
448 {
449         phy->oob_mode = OOB_NOT_CONNECTED;
450         phy->linkrate = SAS_LINK_RATE_UNKNOWN;
451 }
452 
453 static inline unsigned int to_sas_gpio_od(int device, int bit)
454 {
455         return 3 * device + bit;
456 }
457 
458 static inline void sas_put_local_phy(struct sas_phy *phy)
459 {
460         put_device(&phy->dev);
461 }
462 
463 #ifdef CONFIG_SCSI_SAS_HOST_SMP
464 int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count);
465 #else
466 static inline int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count)
467 {
468         return -1;
469 }
470 #endif
471 
472 /* ---------- Tasks ---------- */
473 /*
474       service_response |  SAS_TASK_COMPLETE  |  SAS_TASK_UNDELIVERED |
475   exec_status          |                     |                       |
476   ---------------------+---------------------+-----------------------+
477        SAM_...         |         X           |                       |
478        DEV_NO_RESPONSE |         X           |           X           |
479        INTERRUPTED     |         X           |                       |
480        QUEUE_FULL      |                     |           X           |
481        DEVICE_UNKNOWN  |                     |           X           |
482        SG_ERR          |                     |           X           |
483   ---------------------+---------------------+-----------------------+
484  */
485 
486 enum service_response {
487         SAS_TASK_COMPLETE,
488         SAS_TASK_UNDELIVERED = -1,
489 };
490 
491 enum exec_status {
492         /* The SAM_STAT_.. codes fit in the lower 6 bits, alias some of
493          * them here to silence 'case value not in enumerated type' warnings
494          */
495         __SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION,
496 
497         SAS_DEV_NO_RESPONSE = 0x80,
498         SAS_DATA_UNDERRUN,
499         SAS_DATA_OVERRUN,
500         SAS_INTERRUPTED,
501         SAS_QUEUE_FULL,
502         SAS_DEVICE_UNKNOWN,
503         SAS_SG_ERR,
504         SAS_OPEN_REJECT,
505         SAS_OPEN_TO,
506         SAS_PROTO_RESPONSE,
507         SAS_PHY_DOWN,
508         SAS_NAK_R_ERR,
509         SAS_PENDING,
510         SAS_ABORTED_TASK,
511 };
512 
513 /* When a task finishes with a response, the LLDD examines the
514  * response:
515  *      - For an ATA task task_status_struct::stat is set to
516  * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the
517  * contents of struct ata_task_resp.
518  *      - For SSP tasks, if no data is present or status/TMF response
519  * is valid, task_status_struct::stat is set.  If data is present
520  * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets
521  * task_status_struct::buf_valid_size, and task_status_struct::stat is
522  * set to SAM_CHECK_COND.
523  *
524  * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp
525  * for ATA task.
526  *
527  * "frame_len" is the total frame length, which could be more or less
528  * than actually copied.
529  *
530  * Tasks ending with response, always set the residual field.
531  */
532 struct ata_task_resp {
533         u16  frame_len;
534         u8   ending_fis[ATA_RESP_FIS_SIZE];       /* dev to host or data-in */
535 };
536 
537 #define SAS_STATUS_BUF_SIZE 96
538 
539 struct task_status_struct {
540         enum service_response resp;
541         enum exec_status      stat;
542         int  buf_valid_size;
543 
544         u8   buf[SAS_STATUS_BUF_SIZE];
545 
546         u32  residual;
547         enum sas_open_rej_reason open_rej_reason;
548 };
549 
550 /* ATA and ATAPI task queuable to a SAS LLDD.
551  */
552 struct sas_ata_task {
553         struct host_to_dev_fis fis;
554         u8     atapi_packet[16];  /* 0 if not ATAPI task */
555 
556         u8     retry_count;       /* hardware retry, should be > 0 */
557 
558         u8     dma_xfer:1;        /* PIO:0 or DMA:1 */
559         u8     use_ncq:1;
560         u8     set_affil_pol:1;
561         u8     stp_affil_pol:1;
562 
563         u8     device_control_reg_update:1;
564 };
565 
566 struct sas_smp_task {
567         struct scatterlist smp_req;
568         struct scatterlist smp_resp;
569 };
570 
571 enum task_attribute {
572         TASK_ATTR_SIMPLE = 0,
573         TASK_ATTR_HOQ    = 1,
574         TASK_ATTR_ORDERED= 2,
575         TASK_ATTR_ACA    = 4,
576 };
577 
578 struct sas_ssp_task {
579         u8     retry_count;       /* hardware retry, should be > 0 */
580 
581         u8     LUN[8];
582         u8     enable_first_burst:1;
583         enum   task_attribute task_attr;
584         u8     task_prio;
585         struct scsi_cmnd *cmd;
586 };
587 
588 struct sas_task {
589         struct domain_device *dev;
590 
591         spinlock_t   task_state_lock;
592         unsigned     task_state_flags;
593 
594         enum   sas_protocol      task_proto;
595 
596         union {
597                 struct sas_ata_task ata_task;
598                 struct sas_smp_task smp_task;
599                 struct sas_ssp_task ssp_task;
600         };
601 
602         struct scatterlist *scatter;
603         int    num_scatter;
604         u32    total_xfer_len;
605         u8     data_dir:2;        /* Use PCI_DMA_... */
606 
607         struct task_status_struct task_status;
608         void   (*task_done)(struct sas_task *);
609 
610         void   *lldd_task;        /* for use by LLDDs */
611         void   *uldd_task;
612         struct sas_task_slow *slow_task;
613 };
614 
615 struct sas_task_slow {
616         /* standard/extra infrastructure for slow path commands (SMP and
617          * internal lldd commands
618          */
619         struct timer_list     timer;
620         struct completion     completion;
621         struct sas_task       *task;
622 };
623 
624 #define SAS_TASK_STATE_PENDING      1
625 #define SAS_TASK_STATE_DONE         2
626 #define SAS_TASK_STATE_ABORTED      4
627 #define SAS_TASK_NEED_DEV_RESET     8
628 #define SAS_TASK_AT_INITIATOR       16
629 
630 extern struct sas_task *sas_alloc_task(gfp_t flags);
631 extern struct sas_task *sas_alloc_slow_task(gfp_t flags);
632 extern void sas_free_task(struct sas_task *task);
633 
634 struct sas_domain_function_template {
635         /* The class calls these to notify the LLDD of an event. */
636         void (*lldd_port_formed)(struct asd_sas_phy *);
637         void (*lldd_port_deformed)(struct asd_sas_phy *);
638 
639         /* The class calls these when a device is found or gone. */
640         int  (*lldd_dev_found)(struct domain_device *);
641         void (*lldd_dev_gone)(struct domain_device *);
642 
643         int (*lldd_execute_task)(struct sas_task *, gfp_t gfp_flags);
644 
645         /* Task Management Functions. Must be called from process context. */
646         int (*lldd_abort_task)(struct sas_task *);
647         int (*lldd_abort_task_set)(struct domain_device *, u8 *lun);
648         int (*lldd_clear_aca)(struct domain_device *, u8 *lun);
649         int (*lldd_clear_task_set)(struct domain_device *, u8 *lun);
650         int (*lldd_I_T_nexus_reset)(struct domain_device *);
651         int (*lldd_ata_check_ready)(struct domain_device *);
652         void (*lldd_ata_set_dmamode)(struct domain_device *);
653         int (*lldd_lu_reset)(struct domain_device *, u8 *lun);
654         int (*lldd_query_task)(struct sas_task *);
655 
656         /* Port and Adapter management */
657         int (*lldd_clear_nexus_port)(struct asd_sas_port *);
658         int (*lldd_clear_nexus_ha)(struct sas_ha_struct *);
659 
660         /* Phy management */
661         int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *);
662 
663         /* GPIO support */
664         int (*lldd_write_gpio)(struct sas_ha_struct *, u8 reg_type,
665                                u8 reg_index, u8 reg_count, u8 *write_data);
666 };
667 
668 extern int sas_register_ha(struct sas_ha_struct *);
669 extern int sas_unregister_ha(struct sas_ha_struct *);
670 extern void sas_prep_resume_ha(struct sas_ha_struct *sas_ha);
671 extern void sas_resume_ha(struct sas_ha_struct *sas_ha);
672 extern void sas_suspend_ha(struct sas_ha_struct *sas_ha);
673 
674 int sas_set_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates);
675 int sas_phy_reset(struct sas_phy *phy, int hard_reset);
676 extern int sas_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
677 extern int sas_target_alloc(struct scsi_target *);
678 extern int sas_slave_configure(struct scsi_device *);
679 extern int sas_change_queue_depth(struct scsi_device *, int new_depth);
680 extern int sas_bios_param(struct scsi_device *, struct block_device *,
681                           sector_t capacity, int *hsc);
682 extern struct scsi_transport_template *
683 sas_domain_attach_transport(struct sas_domain_function_template *);
684 extern struct device_attribute dev_attr_phy_event_threshold;
685 
686 int  sas_discover_root_expander(struct domain_device *);
687 
688 void sas_init_ex_attr(void);
689 
690 int  sas_ex_revalidate_domain(struct domain_device *);
691 
692 void sas_unregister_domain_devices(struct asd_sas_port *port, int gone);
693 void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *);
694 int  sas_discover_event(struct asd_sas_port *, enum discover_event ev);
695 
696 int  sas_discover_sata(struct domain_device *);
697 int  sas_discover_end_dev(struct domain_device *);
698 
699 void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *);
700 
701 void sas_init_dev(struct domain_device *);
702 
703 void sas_task_abort(struct sas_task *);
704 int sas_eh_abort_handler(struct scsi_cmnd *cmd);
705 int sas_eh_device_reset_handler(struct scsi_cmnd *cmd);
706 int sas_eh_target_reset_handler(struct scsi_cmnd *cmd);
707 
708 extern void sas_target_destroy(struct scsi_target *);
709 extern int sas_slave_alloc(struct scsi_device *);
710 extern int sas_ioctl(struct scsi_device *sdev, unsigned int cmd,
711                      void __user *arg);
712 extern int sas_drain_work(struct sas_ha_struct *ha);
713 
714 extern void sas_ssp_task_response(struct device *dev, struct sas_task *task,
715                                   struct ssp_response_iu *iu);
716 struct sas_phy *sas_get_local_phy(struct domain_device *dev);
717 
718 int sas_request_addr(struct Scsi_Host *shost, u8 *addr);
719 
720 #endif /* _SASLIB_H_ */
721 

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