Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 721 insertions, 0 deletions

diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
new file mode 100644
index 000000000..3de3b10da
--- /dev/null
+++ b/include/scsi/libsas.h
@@ -0,0 +1,721 @@
+/*
+ * SAS host prototypes and structures header file
+ *
+ * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
+ * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
+ *
+ * This file is licensed under GPLv2.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ *
+ */
+
+#ifndef _LIBSAS_H_
+#define _LIBSAS_H_
+
+
+#include <linux/timer.h>
+#include <linux/pci.h>
+#include <scsi/sas.h>
+#include <linux/libata.h>
+#include <linux/list.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_transport_sas.h>
+#include <linux/scatterlist.h>
+#include <linux/slab.h>
+
+struct block_device;
+
+enum sas_class {
+	SAS,
+	EXPANDER
+};
+
+enum sas_phy_role {
+	PHY_ROLE_NONE = 0,
+	PHY_ROLE_TARGET = 0x40,
+	PHY_ROLE_INITIATOR = 0x80,
+};
+
+enum sas_phy_type {
+        PHY_TYPE_PHYSICAL,
+        PHY_TYPE_VIRTUAL
+};
+
+/* The events are mnemonically described in sas_dump.c
+ * so when updating/adding events here, please also
+ * update the other file too.
+ */
+enum port_event {
+	PORTE_BYTES_DMAED     = 0U,
+	PORTE_BROADCAST_RCVD,
+	PORTE_LINK_RESET_ERR,
+	PORTE_TIMER_EVENT,
+	PORTE_HARD_RESET,
+	PORT_NUM_EVENTS,
+};
+
+enum phy_event {
+	PHYE_LOSS_OF_SIGNAL   = 0U,
+	PHYE_OOB_DONE,
+	PHYE_OOB_ERROR,
+	PHYE_SPINUP_HOLD,             /* hot plug SATA, no COMWAKE sent */
+	PHYE_RESUME_TIMEOUT,
+	PHYE_SHUTDOWN,
+	PHY_NUM_EVENTS,
+};
+
+enum discover_event {
+	DISCE_DISCOVER_DOMAIN   = 0U,
+	DISCE_REVALIDATE_DOMAIN,
+	DISCE_SUSPEND,
+	DISCE_RESUME,
+	DISC_NUM_EVENTS,
+};
+
+/* ---------- Expander Devices ---------- */
+
+#define to_dom_device(_obj) container_of(_obj, struct domain_device, dev_obj)
+#define to_dev_attr(_attr)  container_of(_attr, struct domain_dev_attribute,\
+                                         attr)
+
+enum routing_attribute {
+	DIRECT_ROUTING,
+	SUBTRACTIVE_ROUTING,
+	TABLE_ROUTING,
+};
+
+enum ex_phy_state {
+	PHY_EMPTY,
+	PHY_VACANT,
+	PHY_NOT_PRESENT,
+	PHY_DEVICE_DISCOVERED
+};
+
+struct ex_phy {
+	int    phy_id;
+
+	enum ex_phy_state phy_state;
+
+	enum sas_device_type attached_dev_type;
+	enum sas_linkrate linkrate;
+
+	u8   attached_sata_host:1;
+	u8   attached_sata_dev:1;
+	u8   attached_sata_ps:1;
+
+	enum sas_protocol attached_tproto;
+	enum sas_protocol attached_iproto;
+
+	u8   attached_sas_addr[SAS_ADDR_SIZE];
+	u8   attached_phy_id;
+
+	int phy_change_count;
+	enum routing_attribute routing_attr;
+	u8   virtual:1;
+
+	int  last_da_index;
+
+	struct sas_phy *phy;
+	struct sas_port *port;
+};
+
+struct expander_device {
+	struct list_head children;
+
+	int    ex_change_count;
+	u16    max_route_indexes;
+	u8     num_phys;
+
+	u8     t2t_supp:1;
+	u8     configuring:1;
+	u8     conf_route_table:1;
+
+	u8     enclosure_logical_id[8];
+
+	struct ex_phy *ex_phy;
+	struct sas_port *parent_port;
+
+	struct mutex cmd_mutex;
+};
+
+/* ---------- SATA device ---------- */
+#define ATA_RESP_FIS_SIZE 24
+
+struct sata_device {
+	unsigned int class;
+	u8     port_no;        /* port number, if this is a PM (Port) */
+
+	struct ata_port *ap;
+	struct ata_host *ata_host;
+	struct smp_resp rps_resp ____cacheline_aligned; /* report_phy_sata_resp */
+	u8     fis[ATA_RESP_FIS_SIZE];
+};
+
+struct ssp_device {
+	struct list_head eh_list_node; /* pending a user requested eh action */
+	struct scsi_lun reset_lun;
+};
+
+enum {
+	SAS_DEV_GONE,
+	SAS_DEV_FOUND, /* device notified to lldd */
+	SAS_DEV_DESTROY,
+	SAS_DEV_EH_PENDING,
+	SAS_DEV_LU_RESET,
+	SAS_DEV_RESET,
+};
+
+struct domain_device {
+	spinlock_t done_lock;
+	enum sas_device_type dev_type;
+
+        enum sas_linkrate linkrate;
+        enum sas_linkrate min_linkrate;
+        enum sas_linkrate max_linkrate;
+
+        int  pathways;
+
+        struct domain_device *parent;
+        struct list_head siblings; /* devices on the same level */
+        struct asd_sas_port *port;        /* shortcut to root of the tree */
+	struct sas_phy *phy;
+
+        struct list_head dev_list_node;
+	struct list_head disco_list_node; /* awaiting probe or destruct */
+
+        enum sas_protocol    iproto;
+        enum sas_protocol    tproto;
+
+        struct sas_rphy *rphy;
+
+        u8  sas_addr[SAS_ADDR_SIZE];
+        u8  hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
+
+        u8  frame_rcvd[32];
+
+        union {
+                struct expander_device ex_dev;
+                struct sata_device     sata_dev; /* STP & directly attached */
+		struct ssp_device      ssp_dev;
+        };
+
+        void *lldd_dev;
+	unsigned long state;
+	struct kref kref;
+};
+
+struct sas_work {
+	struct list_head drain_node;
+	struct work_struct work;
+};
+
+static inline void INIT_SAS_WORK(struct sas_work *sw, void (*fn)(struct work_struct *))
+{
+	INIT_WORK(&sw->work, fn);
+	INIT_LIST_HEAD(&sw->drain_node);
+}
+
+struct sas_discovery_event {
+	struct sas_work work;
+	struct asd_sas_port *port;
+};
+
+static inline struct sas_discovery_event *to_sas_discovery_event(struct work_struct *work)
+{
+	struct sas_discovery_event *ev = container_of(work, typeof(*ev), work.work);
+
+	return ev;
+}
+
+struct sas_discovery {
+	struct sas_discovery_event disc_work[DISC_NUM_EVENTS];
+	unsigned long    pending;
+	u8     fanout_sas_addr[8];
+	u8     eeds_a[8];
+	u8     eeds_b[8];
+	int    max_level;
+};
+
+/* The port struct is Class:RW, driver:RO */
+struct asd_sas_port {
+/* private: */
+	struct sas_discovery disc;
+	struct domain_device *port_dev;
+	spinlock_t dev_list_lock;
+	struct list_head dev_list;
+	struct list_head disco_list;
+	struct list_head destroy_list;
+	struct list_head sas_port_del_list;
+	enum   sas_linkrate linkrate;
+
+	struct sas_work work;
+	int suspended;
+
+/* public: */
+	int id;
+
+	enum sas_class   class;
+	u8               sas_addr[SAS_ADDR_SIZE];
+	u8               attached_sas_addr[SAS_ADDR_SIZE];
+	enum sas_protocol   iproto;
+	enum sas_protocol   tproto;
+
+	enum sas_oob_mode oob_mode;
+
+	spinlock_t       phy_list_lock;
+	struct list_head phy_list;
+	int              num_phys;
+	u32              phy_mask;
+
+	struct sas_ha_struct *ha;
+
+	struct sas_port	*port;
+
+	void *lldd_port;	  /* not touched by the sas class code */
+};
+
+struct asd_sas_event {
+	struct sas_work work;
+	struct asd_sas_phy *phy;
+	int event;
+};
+
+static inline struct asd_sas_event *to_asd_sas_event(struct work_struct *work)
+{
+	struct asd_sas_event *ev = container_of(work, typeof(*ev), work.work);
+
+	return ev;
+}
+
+static inline void INIT_SAS_EVENT(struct asd_sas_event *ev,
+		void (*fn)(struct work_struct *),
+		struct asd_sas_phy *phy, int event)
+{
+	INIT_SAS_WORK(&ev->work, fn);
+	ev->phy = phy;
+	ev->event = event;
+}
+
+#define SAS_PHY_SHUTDOWN_THRES   1024
+
+/* The phy pretty much is controlled by the LLDD.
+ * The class only reads those fields.
+ */
+struct asd_sas_phy {
+/* private: */
+	atomic_t event_nr;
+	int in_shutdown;
+	int error;
+	int suspended;
+
+	struct sas_phy *phy;
+
+/* public: */
+	/* The following are class:RO, driver:R/W */
+	int            enabled;	  /* must be set */
+
+	int            id;	  /* must be set */
+	enum sas_class class;
+	enum sas_protocol iproto;
+	enum sas_protocol tproto;
+
+	enum sas_phy_type  type;
+	enum sas_phy_role  role;
+	enum sas_oob_mode  oob_mode;
+	enum sas_linkrate linkrate;
+
+	u8   *sas_addr;		  /* must be set */
+	u8   attached_sas_addr[SAS_ADDR_SIZE]; /* class:RO, driver: R/W */
+
+	spinlock_t     frame_rcvd_lock;
+	u8             *frame_rcvd; /* must be set */
+	int            frame_rcvd_size;
+
+	spinlock_t     sas_prim_lock;
+	u32            sas_prim;
+
+	struct list_head port_phy_el; /* driver:RO */
+	struct asd_sas_port      *port; /* Class:RW, driver: RO */
+
+	struct sas_ha_struct *ha; /* may be set; the class sets it anyway */
+
+	void *lldd_phy;		  /* not touched by the sas_class_code */
+};
+
+struct scsi_core {
+	struct Scsi_Host *shost;
+
+};
+
+enum sas_ha_state {
+	SAS_HA_REGISTERED,
+	SAS_HA_DRAINING,
+	SAS_HA_ATA_EH_ACTIVE,
+	SAS_HA_FROZEN,
+};
+
+struct sas_ha_struct {
+/* private: */
+	struct list_head  defer_q; /* work queued while draining */
+	struct mutex	  drain_mutex;
+	unsigned long	  state;
+	spinlock_t	  lock;
+	int		  eh_active;
+	wait_queue_head_t eh_wait_q;
+	struct list_head  eh_dev_q;
+
+	struct mutex disco_mutex;
+
+	struct scsi_core core;
+
+/* public: */
+	char *sas_ha_name;
+	struct device *dev;	  /* should be set */
+	struct module *lldd_module; /* should be set */
+
+	struct workqueue_struct *event_q;
+	struct workqueue_struct *disco_q;
+
+	u8 *sas_addr;		  /* must be set */
+	u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
+
+	spinlock_t      phy_port_lock;
+	struct asd_sas_phy  **sas_phy; /* array of valid pointers, must be set */
+	struct asd_sas_port **sas_port; /* array of valid pointers, must be set */
+	int             num_phys; /* must be set, gt 0, static */
+
+	int strict_wide_ports; /* both sas_addr and attached_sas_addr must match
+				* their siblings when forming wide ports */
+
+	/* LLDD calls these to notify the class of an event. */
+	int (*notify_port_event)(struct asd_sas_phy *, enum port_event);
+	int (*notify_phy_event)(struct asd_sas_phy *, enum phy_event);
+
+	void *lldd_ha;		  /* not touched by sas class code */
+
+	struct list_head eh_done_q;  /* complete via scsi_eh_flush_done_q */
+	struct list_head eh_ata_q; /* scmds to promote from sas to ata eh */
+
+	int event_thres;
+};
+
+#define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata)
+
+static inline struct domain_device *
+starget_to_domain_dev(struct scsi_target *starget) {
+	return starget->hostdata;
+}
+
+static inline struct domain_device *
+sdev_to_domain_dev(struct scsi_device *sdev) {
+	return starget_to_domain_dev(sdev->sdev_target);
+}
+
+static inline struct ata_device *sas_to_ata_dev(struct domain_device *dev)
+{
+	return &dev->sata_dev.ap->link.device[0];
+}
+
+static inline struct domain_device *
+cmd_to_domain_dev(struct scsi_cmnd *cmd)
+{
+	return sdev_to_domain_dev(cmd->device);
+}
+
+void sas_hash_addr(u8 *hashed, const u8 *sas_addr);
+
+/* Before calling a notify event, LLDD should use this function
+ * when the link is severed (possibly from its tasklet).
+ * The idea is that the Class only reads those, while the LLDD,
+ * can R/W these (thus avoiding a race).
+ */
+static inline void sas_phy_disconnected(struct asd_sas_phy *phy)
+{
+	phy->oob_mode = OOB_NOT_CONNECTED;
+	phy->linkrate = SAS_LINK_RATE_UNKNOWN;
+}
+
+static inline unsigned int to_sas_gpio_od(int device, int bit)
+{
+	return 3 * device + bit;
+}
+
+static inline void sas_put_local_phy(struct sas_phy *phy)
+{
+	put_device(&phy->dev);
+}
+
+#ifdef CONFIG_SCSI_SAS_HOST_SMP
+int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count);
+#else
+static inline int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count)
+{
+	return -1;
+}
+#endif
+
+/* ---------- Tasks ---------- */
+/*
+      service_response |  SAS_TASK_COMPLETE  |  SAS_TASK_UNDELIVERED |
+  exec_status          |                     |                       |
+  ---------------------+---------------------+-----------------------+
+       SAM_...         |         X           |                       |
+       DEV_NO_RESPONSE |         X           |           X           |
+       INTERRUPTED     |         X           |                       |
+       QUEUE_FULL      |                     |           X           |
+       DEVICE_UNKNOWN  |                     |           X           |
+       SG_ERR          |                     |           X           |
+  ---------------------+---------------------+-----------------------+
+ */
+
+enum service_response {
+	SAS_TASK_COMPLETE,
+	SAS_TASK_UNDELIVERED = -1,
+};
+
+enum exec_status {
+	/* The SAM_STAT_.. codes fit in the lower 6 bits, alias some of
+	 * them here to silence 'case value not in enumerated type' warnings
+	 */
+	__SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION,
+
+	SAS_DEV_NO_RESPONSE = 0x80,
+	SAS_DATA_UNDERRUN,
+	SAS_DATA_OVERRUN,
+	SAS_INTERRUPTED,
+	SAS_QUEUE_FULL,
+	SAS_DEVICE_UNKNOWN,
+	SAS_SG_ERR,
+	SAS_OPEN_REJECT,
+	SAS_OPEN_TO,
+	SAS_PROTO_RESPONSE,
+	SAS_PHY_DOWN,
+	SAS_NAK_R_ERR,
+	SAS_PENDING,
+	SAS_ABORTED_TASK,
+};
+
+/* When a task finishes with a response, the LLDD examines the
+ * response:
+ * 	- For an ATA task task_status_struct::stat is set to
+ * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the
+ * contents of struct ata_task_resp.
+ * 	- For SSP tasks, if no data is present or status/TMF response
+ * is valid, task_status_struct::stat is set.  If data is present
+ * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets
+ * task_status_struct::buf_valid_size, and task_status_struct::stat is
+ * set to SAM_CHECK_COND.
+ *
+ * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp
+ * for ATA task.
+ *
+ * "frame_len" is the total frame length, which could be more or less
+ * than actually copied.
+ *
+ * Tasks ending with response, always set the residual field.
+ */
+struct ata_task_resp {
+	u16  frame_len;
+	u8   ending_fis[ATA_RESP_FIS_SIZE];	  /* dev to host or data-in */
+};
+
+#define SAS_STATUS_BUF_SIZE 96
+
+struct task_status_struct {
+	enum service_response resp;
+	enum exec_status      stat;
+	int  buf_valid_size;
+
+	u8   buf[SAS_STATUS_BUF_SIZE];
+
+	u32  residual;
+	enum sas_open_rej_reason open_rej_reason;
+};
+
+/* ATA and ATAPI task queuable to a SAS LLDD.
+ */
+struct sas_ata_task {
+	struct host_to_dev_fis fis;
+	u8     atapi_packet[16];  /* 0 if not ATAPI task */
+
+	u8     retry_count;	  /* hardware retry, should be > 0 */
+
+	u8     dma_xfer:1;	  /* PIO:0 or DMA:1 */
+	u8     use_ncq:1;
+	u8     set_affil_pol:1;
+	u8     stp_affil_pol:1;
+
+	u8     device_control_reg_update:1;
+};
+
+struct sas_smp_task {
+	struct scatterlist smp_req;
+	struct scatterlist smp_resp;
+};
+
+enum task_attribute {
+	TASK_ATTR_SIMPLE = 0,
+	TASK_ATTR_HOQ    = 1,
+	TASK_ATTR_ORDERED= 2,
+	TASK_ATTR_ACA    = 4,
+};
+
+struct sas_ssp_task {
+	u8     retry_count;	  /* hardware retry, should be > 0 */
+
+	u8     LUN[8];
+	u8     enable_first_burst:1;
+	enum   task_attribute task_attr;
+	u8     task_prio;
+	struct scsi_cmnd *cmd;
+};
+
+struct sas_task {
+	struct domain_device *dev;
+
+	spinlock_t   task_state_lock;
+	unsigned     task_state_flags;
+
+	enum   sas_protocol      task_proto;
+
+	union {
+		struct sas_ata_task ata_task;
+		struct sas_smp_task smp_task;
+		struct sas_ssp_task ssp_task;
+	};
+
+	struct scatterlist *scatter;
+	int    num_scatter;
+	u32    total_xfer_len;
+	u8     data_dir:2;	  /* Use PCI_DMA_... */
+
+	struct task_status_struct task_status;
+	void   (*task_done)(struct sas_task *);
+
+	void   *lldd_task;	  /* for use by LLDDs */
+	void   *uldd_task;
+	struct sas_task_slow *slow_task;
+};
+
+struct sas_task_slow {
+	/* standard/extra infrastructure for slow path commands (SMP and
+	 * internal lldd commands
+	 */
+	struct timer_list     timer;
+	struct completion     completion;
+	struct sas_task       *task;
+};
+
+#define SAS_TASK_STATE_PENDING      1
+#define SAS_TASK_STATE_DONE         2
+#define SAS_TASK_STATE_ABORTED      4
+#define SAS_TASK_NEED_DEV_RESET     8
+#define SAS_TASK_AT_INITIATOR       16
+
+extern struct sas_task *sas_alloc_task(gfp_t flags);
+extern struct sas_task *sas_alloc_slow_task(gfp_t flags);
+extern void sas_free_task(struct sas_task *task);
+
+struct sas_domain_function_template {
+	/* The class calls these to notify the LLDD of an event. */
+	void (*lldd_port_formed)(struct asd_sas_phy *);
+	void (*lldd_port_deformed)(struct asd_sas_phy *);
+
+	/* The class calls these when a device is found or gone. */
+	int  (*lldd_dev_found)(struct domain_device *);
+	void (*lldd_dev_gone)(struct domain_device *);
+
+	int (*lldd_execute_task)(struct sas_task *, gfp_t gfp_flags);
+
+	/* Task Management Functions. Must be called from process context. */
+	int (*lldd_abort_task)(struct sas_task *);
+	int (*lldd_abort_task_set)(struct domain_device *, u8 *lun);
+	int (*lldd_clear_aca)(struct domain_device *, u8 *lun);
+	int (*lldd_clear_task_set)(struct domain_device *, u8 *lun);
+	int (*lldd_I_T_nexus_reset)(struct domain_device *);
+	int (*lldd_ata_check_ready)(struct domain_device *);
+	void (*lldd_ata_set_dmamode)(struct domain_device *);
+	int (*lldd_lu_reset)(struct domain_device *, u8 *lun);
+	int (*lldd_query_task)(struct sas_task *);
+
+	/* Port and Adapter management */
+	int (*lldd_clear_nexus_port)(struct asd_sas_port *);
+	int (*lldd_clear_nexus_ha)(struct sas_ha_struct *);
+
+	/* Phy management */
+	int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *);
+
+	/* GPIO support */
+	int (*lldd_write_gpio)(struct sas_ha_struct *, u8 reg_type,
+			       u8 reg_index, u8 reg_count, u8 *write_data);
+};
+
+extern int sas_register_ha(struct sas_ha_struct *);
+extern int sas_unregister_ha(struct sas_ha_struct *);
+extern void sas_prep_resume_ha(struct sas_ha_struct *sas_ha);
+extern void sas_resume_ha(struct sas_ha_struct *sas_ha);
+extern void sas_suspend_ha(struct sas_ha_struct *sas_ha);
+
+int sas_set_phy_speed(struct sas_phy *phy,
+		      struct sas_phy_linkrates *rates);
+int sas_phy_reset(struct sas_phy *phy, int hard_reset);
+extern int sas_queuecommand(struct Scsi_Host * ,struct scsi_cmnd *);
+extern int sas_target_alloc(struct scsi_target *);
+extern int sas_slave_configure(struct scsi_device *);
+extern int sas_change_queue_depth(struct scsi_device *, int new_depth);
+extern int sas_bios_param(struct scsi_device *,
+			  struct block_device *,
+			  sector_t capacity, int *hsc);
+extern struct scsi_transport_template *
+sas_domain_attach_transport(struct sas_domain_function_template *);
+extern struct device_attribute dev_attr_phy_event_threshold;
+
+int  sas_discover_root_expander(struct domain_device *);
+
+void sas_init_ex_attr(void);
+
+int  sas_ex_revalidate_domain(struct domain_device *);
+
+void sas_unregister_domain_devices(struct asd_sas_port *port, int gone);
+void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *);
+int  sas_discover_event(struct asd_sas_port *, enum discover_event ev);
+
+int  sas_discover_sata(struct domain_device *);
+int  sas_discover_end_dev(struct domain_device *);
+
+void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *);
+
+void sas_init_dev(struct domain_device *);
+
+void sas_task_abort(struct sas_task *);
+int sas_eh_abort_handler(struct scsi_cmnd *cmd);
+int sas_eh_device_reset_handler(struct scsi_cmnd *cmd);
+int sas_eh_target_reset_handler(struct scsi_cmnd *cmd);
+
+extern void sas_target_destroy(struct scsi_target *);
+extern int sas_slave_alloc(struct scsi_device *);
+extern int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg);
+extern int sas_drain_work(struct sas_ha_struct *ha);
+
+extern void sas_ssp_task_response(struct device *dev, struct sas_task *task,
+				  struct ssp_response_iu *iu);
+struct sas_phy *sas_get_local_phy(struct domain_device *dev);
+
+int sas_request_addr(struct Scsi_Host *shost, u8 *addr);
+
+#endif /* _SASLIB_H_ */