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-rw-r--r--include/scsi/libsas.h71
1 files changed, 42 insertions, 29 deletions
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 6a308d42d98f..5f5ed1b8b41b 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -86,7 +86,9 @@ enum discover_event {
DISCE_DISCOVER_DOMAIN = 0U,
DISCE_REVALIDATE_DOMAIN = 1,
DISCE_PORT_GONE = 2,
- DISC_NUM_EVENTS = 3,
+ DISCE_PROBE = 3,
+ DISCE_DESTRUCT = 4,
+ DISC_NUM_EVENTS = 5,
};
/* ---------- Expander Devices ---------- */
@@ -151,6 +153,8 @@ struct expander_device {
struct ex_phy *ex_phy;
struct sas_port *parent_port;
+
+ struct mutex cmd_mutex;
};
/* ---------- SATA device ---------- */
@@ -162,22 +166,21 @@ enum ata_command_set {
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;
};
-/* ---------- Domain device ---------- */
+enum {
+ SAS_DEV_GONE,
+ SAS_DEV_DESTROY,
+};
+
struct domain_device {
+ spinlock_t done_lock;
enum sas_dev_type dev_type;
enum sas_linkrate linkrate;
@@ -189,8 +192,10 @@ 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;
@@ -208,7 +213,8 @@ struct domain_device {
};
void *lldd_dev;
- int gone;
+ unsigned long state;
+ struct kref kref;
};
struct sas_discovery_event {
@@ -217,7 +223,6 @@ struct sas_discovery_event {
};
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];
@@ -226,7 +231,6 @@ struct sas_discovery {
int max_level;
};
-
/* The port struct is Class:RW, driver:RO */
struct asd_sas_port {
/* private: */
@@ -236,9 +240,10 @@ 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;
/* public: */
@@ -274,7 +279,6 @@ struct asd_sas_event {
*/
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];
@@ -320,6 +324,7 @@ 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;
@@ -334,18 +339,23 @@ struct sas_ha_event {
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;
+ struct list_head defer_q; /* work queued while draining */
+ struct mutex drain_mutex;
+ unsigned long state;
spinlock_t state_lock;
+ struct mutex disco_mutex;
+
struct scsi_core core;
/* public: */
@@ -374,7 +384,8 @@ 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)
@@ -418,6 +429,11 @@ 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
@@ -447,7 +463,10 @@ 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,
@@ -487,10 +506,6 @@ 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;
};
#define SAS_STATUS_BUF_SIZE 96
@@ -604,7 +619,8 @@ 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_soft_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 *);
@@ -625,14 +641,11 @@ extern int sas_unregister_ha(struct sas_ha_struct *);
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_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);
@@ -649,7 +662,7 @@ 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);
@@ -661,20 +674,20 @@ 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_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);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.