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Diffstat (limited to 'include/scsi/libsas.h')
-rw-r--r--include/scsi/libsas.h226
1 files changed, 152 insertions, 74 deletions
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 3dec1949f69..ef7872c20da 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -79,14 +79,19 @@ enum phy_event {
PHYE_OOB_DONE = 1,
PHYE_OOB_ERROR = 2,
PHYE_SPINUP_HOLD = 3, /* hot plug SATA, no COMWAKE sent */
- PHY_NUM_EVENTS = 4,
+ PHYE_RESUME_TIMEOUT = 4,
+ PHY_NUM_EVENTS = 5,
};
enum discover_event {
DISCE_DISCOVER_DOMAIN = 0U,
DISCE_REVALIDATE_DOMAIN = 1,
DISCE_PORT_GONE = 2,
- DISC_NUM_EVENTS = 3,
+ DISCE_PROBE = 3,
+ DISCE_SUSPEND = 4,
+ DISCE_RESUME = 5,
+ DISCE_DESTRUCT = 6,
+ DISC_NUM_EVENTS = 7,
};
/* ---------- Expander Devices ---------- */
@@ -113,7 +118,7 @@ struct ex_phy {
enum ex_phy_state phy_state;
- enum sas_dev_type attached_dev_type;
+ enum sas_device_type attached_dev_type;
enum sas_linkrate linkrate;
u8 attached_sata_host:1;
@@ -126,7 +131,7 @@ struct ex_phy {
u8 attached_sas_addr[SAS_ADDR_SIZE];
u8 attached_phy_id;
- u8 phy_change_count;
+ int phy_change_count;
enum routing_attribute routing_attr;
u8 virtual:1;
@@ -139,15 +144,20 @@ struct ex_phy {
struct expander_device {
struct list_head children;
- u16 ex_change_count;
+ 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 ---------- */
@@ -156,26 +166,35 @@ enum ata_command_set {
ATAPI_COMMAND_SET = 1,
};
+#define ATA_RESP_FIS_SIZE 24
+
struct sata_device {
enum ata_command_set command_set;
struct smp_resp rps_resp; /* report_phy_sata_resp */
- __le16 *identify_device;
- __le16 *identify_packet_device;
-
u8 port_no; /* port number, if this is a PM (Port) */
- struct list_head children; /* PM Ports if this is a PM */
struct ata_port *ap;
struct ata_host ata_host;
- struct ata_taskfile tf;
- u32 sstatus;
- u32 serror;
- u32 scontrol;
+ 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,
};
-/* ---------- Domain device ---------- */
struct domain_device {
- enum sas_dev_type dev_type;
+ spinlock_t done_lock;
+ enum sas_device_type dev_type;
enum sas_linkrate linkrate;
enum sas_linkrate min_linkrate;
@@ -186,8 +205,10 @@ struct domain_device {
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;
@@ -202,19 +223,38 @@ struct domain_device {
union {
struct expander_device ex_dev;
struct sata_device sata_dev; /* STP & directly attached */
+ struct ssp_device ssp_dev;
};
void *lldd_dev;
- int gone;
+ unsigned long state;
+ struct kref kref;
};
-struct sas_discovery_event {
+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 {
- spinlock_t disc_event_lock;
struct sas_discovery_event disc_work[DISC_NUM_EVENTS];
unsigned long pending;
u8 fanout_sas_addr[8];
@@ -223,7 +263,6 @@ struct sas_discovery {
int max_level;
};
-
/* The port struct is Class:RW, driver:RO */
struct asd_sas_port {
/* private: */
@@ -233,10 +272,12 @@ struct asd_sas_port {
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;
enum sas_linkrate linkrate;
- struct sas_phy *phy;
- struct work_struct work;
+ struct sas_work work;
+ int suspended;
/* public: */
int id;
@@ -262,16 +303,22 @@ struct asd_sas_port {
};
struct asd_sas_event {
- struct work_struct work;
+ struct sas_work work;
struct asd_sas_phy *phy;
};
+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;
+}
+
/* The phy pretty much is controlled by the LLDD.
* The class only reads those fields.
*/
struct asd_sas_phy {
/* private: */
- /* protected by ha->event_lock */
struct asd_sas_event port_events[PORT_NUM_EVENTS];
struct asd_sas_event phy_events[PHY_NUM_EVENTS];
@@ -279,6 +326,7 @@ struct asd_sas_phy {
unsigned long phy_events_pending;
int error;
+ int suspended;
struct sas_phy *phy;
@@ -317,6 +365,7 @@ struct asd_sas_phy {
struct scsi_core {
struct Scsi_Host *shost;
+ struct mutex task_queue_flush;
spinlock_t task_queue_lock;
struct list_head task_queue;
int task_queue_size;
@@ -325,23 +374,38 @@ struct scsi_core {
};
struct sas_ha_event {
- struct work_struct work;
+ struct sas_work work;
struct sas_ha_struct *ha;
};
+static inline struct sas_ha_event *to_sas_ha_event(struct work_struct *work)
+{
+ struct sas_ha_event *ev = container_of(work, typeof(*ev), work.work);
+
+ return ev;
+}
+
enum sas_ha_state {
SAS_HA_REGISTERED,
- SAS_HA_UNREGISTERED
+ SAS_HA_DRAINING,
+ SAS_HA_ATA_EH_ACTIVE,
+ SAS_HA_FROZEN,
};
struct sas_ha_struct {
/* private: */
- spinlock_t event_lock;
struct sas_ha_event ha_events[HA_NUM_EVENTS];
unsigned long pending;
- enum sas_ha_state state;
- spinlock_t state_lock;
+ 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;
@@ -361,6 +425,8 @@ struct sas_ha_struct {
/* The class calls this to send a task for execution. */
int lldd_max_execute_num;
int lldd_queue_size;
+ 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. */
void (*notify_ha_event)(struct sas_ha_struct *, enum ha_event);
@@ -369,7 +435,8 @@ struct sas_ha_struct {
void *lldd_ha; /* not touched by sas class code */
- struct list_head eh_done_q;
+ 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 */
};
#define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata)
@@ -384,6 +451,11 @@ 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)
{
@@ -403,6 +475,25 @@ static inline void sas_phy_disconnected(struct asd_sas_phy *phy)
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 |
@@ -423,7 +514,10 @@ enum service_response {
};
enum exec_status {
- /* The SAM_STAT_.. codes fit in the lower 6 bits */
+ /* 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,
@@ -462,11 +556,7 @@ enum exec_status {
*/
struct ata_task_resp {
u16 frame_len;
- u8 ending_fis[24]; /* dev to host or data-in */
- u32 sstatus;
- u32 serror;
- u32 scontrol;
- u32 sactive;
+ u8 ending_fis[ATA_RESP_FIS_SIZE]; /* dev to host or data-in */
};
#define SAS_STATUS_BUF_SIZE 96
@@ -517,7 +607,7 @@ struct sas_ssp_task {
u8 enable_first_burst:1;
enum task_attribute task_attr;
u8 task_prio;
- u8 cdb[16];
+ struct scsi_cmnd *cmd;
};
struct sas_task {
@@ -529,10 +619,6 @@ struct sas_task {
enum sas_protocol task_proto;
- /* Used by the discovery code. */
- struct timer_list timer;
- struct completion completion;
-
union {
struct sas_ata_task ata_task;
struct sas_smp_task smp_task;
@@ -549,11 +635,16 @@ struct sas_task {
void *lldd_task; /* for use by LLDDs */
void *uldd_task;
-
- struct work_struct abort_work;
+ struct sas_task_slow *slow_task;
};
-extern struct kmem_cache *sas_task_cache;
+struct sas_task_slow {
+ /* standard/extra infrastructure for slow path commands (SMP and
+ * internal lldd commands
+ */
+ struct timer_list timer;
+ struct completion completion;
+};
#define SAS_TASK_STATE_PENDING 1
#define SAS_TASK_STATE_DONE 2
@@ -561,28 +652,9 @@ extern struct kmem_cache *sas_task_cache;
#define SAS_TASK_NEED_DEV_RESET 8
#define SAS_TASK_AT_INITIATOR 16
-static inline struct sas_task *sas_alloc_task(gfp_t flags)
-{
- struct sas_task *task = kmem_cache_zalloc(sas_task_cache, flags);
-
- if (task) {
- INIT_LIST_HEAD(&task->list);
- spin_lock_init(&task->task_state_lock);
- task->task_state_flags = SAS_TASK_STATE_PENDING;
- init_timer(&task->timer);
- init_completion(&task->completion);
- }
-
- return task;
-}
-
-static inline void sas_free_task(struct sas_task *task)
-{
- if (task) {
- BUG_ON(!list_empty(&task->list));
- kmem_cache_free(sas_task_cache, task);
- }
-}
+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. */
@@ -602,6 +674,8 @@ struct sas_domain_function_template {
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 *);
@@ -611,22 +685,25 @@ struct sas_domain_function_template {
/* 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_enable(struct sas_phy *phy, int enabled);
int sas_phy_reset(struct sas_phy *phy, int hard_reset);
int sas_queue_up(struct sas_task *task);
-extern int sas_queuecommand(struct scsi_cmnd *,
- void (*scsi_done)(struct scsi_cmnd *));
+extern int sas_queuecommand(struct Scsi_Host * ,struct scsi_cmnd *);
extern int sas_target_alloc(struct scsi_target *);
-extern int sas_slave_alloc(struct scsi_device *);
extern int sas_slave_configure(struct scsi_device *);
-extern void sas_slave_destroy(struct scsi_device *);
extern int sas_change_queue_depth(struct scsi_device *, int new_depth,
int reason);
extern int sas_change_queue_type(struct scsi_device *, int qt);
@@ -643,32 +720,33 @@ void sas_init_ex_attr(void);
int sas_ex_revalidate_domain(struct domain_device *);
-void sas_unregister_domain_devices(struct asd_sas_port *port);
+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 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_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_bus_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 int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
struct request *req);
extern void sas_ssp_task_response(struct device *dev, struct sas_task *task,
struct ssp_response_iu *iu);
-struct sas_phy *sas_find_local_phy(struct domain_device *dev);
+struct sas_phy *sas_get_local_phy(struct domain_device *dev);
int sas_request_addr(struct Scsi_Host *shost, u8 *addr);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 01:21:01 +0000