#include <linux/transport_class.h>
#include <linux/types.h>
+#include <linux/mutex.h>
+#include <scsi/sas.h>
struct scsi_transport_template;
struct sas_rphy;
-
+struct request;
enum sas_device_type {
- SAS_PHY_UNUSED,
- SAS_END_DEVICE,
- SAS_EDGE_EXPANDER_DEVICE,
- SAS_FANOUT_EXPANDER_DEVICE,
+ SAS_PHY_UNUSED = 0,
+ SAS_END_DEVICE = 1,
+ SAS_EDGE_EXPANDER_DEVICE = 2,
+ SAS_FANOUT_EXPANDER_DEVICE = 3,
};
-enum sas_protocol {
- SAS_PROTOCOL_SATA = 0x01,
- SAS_PROTOCOL_SMP = 0x02,
- SAS_PROTOCOL_STP = 0x04,
- SAS_PROTOCOL_SSP = 0x08,
-};
+static inline int sas_protocol_ata(enum sas_protocol proto)
+{
+ return ((proto & SAS_PROTOCOL_SATA) ||
+ (proto & SAS_PROTOCOL_STP))? 1 : 0;
+}
enum sas_linkrate {
- SAS_LINK_RATE_UNKNOWN,
- SAS_PHY_DISABLED,
- SAS_LINK_RATE_FAILED,
- SAS_SATA_SPINUP_HOLD,
- SAS_SATA_PORT_SELECTOR,
- SAS_LINK_RATE_1_5_GBPS,
- SAS_LINK_RATE_3_0_GBPS,
- SAS_LINK_VIRTUAL,
+ /* These Values are defined in the SAS standard */
+ SAS_LINK_RATE_UNKNOWN = 0,
+ SAS_PHY_DISABLED = 1,
+ SAS_PHY_RESET_PROBLEM = 2,
+ SAS_SATA_SPINUP_HOLD = 3,
+ SAS_SATA_PORT_SELECTOR = 4,
+ SAS_PHY_RESET_IN_PROGRESS = 5,
+ SAS_LINK_RATE_1_5_GBPS = 8,
+ SAS_LINK_RATE_G1 = SAS_LINK_RATE_1_5_GBPS,
+ SAS_LINK_RATE_3_0_GBPS = 9,
+ SAS_LINK_RATE_G2 = SAS_LINK_RATE_3_0_GBPS,
+ SAS_LINK_RATE_6_0_GBPS = 10,
+ /* These are virtual to the transport class and may never
+ * be signalled normally since the standard defined field
+ * is only 4 bits */
+ SAS_LINK_RATE_FAILED = 0x10,
+ SAS_PHY_VIRTUAL = 0x11,
};
struct sas_identify {
struct sas_phy {
struct device dev;
int number;
+ int enabled;
/* phy identification */
struct sas_identify identify;
enum sas_linkrate minimum_linkrate;
enum sas_linkrate maximum_linkrate_hw;
enum sas_linkrate maximum_linkrate;
- u8 port_identifier;
-
- /* internal state */
- unsigned int local_attached : 1;
/* link error statistics */
u32 invalid_dword_count;
u32 loss_of_dword_sync_count;
u32 phy_reset_problem_count;
- /* the other end of the link */
- struct sas_rphy *rphy;
+ /* for the list of phys belonging to a port */
+ struct list_head port_siblings;
+
+ struct work_struct reset_work;
};
#define dev_to_phy(d) \
container_of((d), struct sas_phy, dev)
-#define transport_class_to_phy(cdev) \
- dev_to_phy((cdev)->dev)
+#define transport_class_to_phy(dev) \
+ dev_to_phy((dev)->parent)
#define phy_to_shost(phy) \
dev_to_shost((phy)->dev.parent)
+struct request_queue;
struct sas_rphy {
struct device dev;
struct sas_identify identify;
struct list_head list;
+ struct request_queue *q;
u32 scsi_target_id;
};
#define dev_to_rphy(d) \
container_of((d), struct sas_rphy, dev)
-#define transport_class_to_rphy(cdev) \
- dev_to_rphy((cdev)->dev)
+#define transport_class_to_rphy(dev) \
+ dev_to_rphy((dev)->parent)
#define rphy_to_shost(rphy) \
dev_to_shost((rphy)->dev.parent)
+#define target_to_rphy(targ) \
+ dev_to_rphy((targ)->dev.parent)
+
+struct sas_end_device {
+ struct sas_rphy rphy;
+ /* flags */
+ unsigned ready_led_meaning:1;
+ unsigned tlr_supported:1;
+ unsigned tlr_enabled:1;
+ /* parameters */
+ u16 I_T_nexus_loss_timeout;
+ u16 initiator_response_timeout;
+};
+#define rphy_to_end_device(r) \
+ container_of((r), struct sas_end_device, rphy)
+
+struct sas_expander_device {
+ int level;
+ int next_port_id;
+
+ #define SAS_EXPANDER_VENDOR_ID_LEN 8
+ char vendor_id[SAS_EXPANDER_VENDOR_ID_LEN+1];
+ #define SAS_EXPANDER_PRODUCT_ID_LEN 16
+ char product_id[SAS_EXPANDER_PRODUCT_ID_LEN+1];
+ #define SAS_EXPANDER_PRODUCT_REV_LEN 4
+ char product_rev[SAS_EXPANDER_PRODUCT_REV_LEN+1];
+ #define SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN 8
+ char component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN+1];
+ u16 component_id;
+ u8 component_revision_id;
+
+ struct sas_rphy rphy;
+
+};
+#define rphy_to_expander_device(r) \
+ container_of((r), struct sas_expander_device, rphy)
+
+struct sas_port {
+ struct device dev;
+ int port_identifier;
+ int num_phys;
+ /* port flags */
+ unsigned int is_backlink:1;
+
+ /* the other end of the link */
+ struct sas_rphy *rphy;
+
+ struct mutex phy_list_mutex;
+ struct list_head phy_list;
+};
+
+#define dev_to_sas_port(d) \
+ container_of((d), struct sas_port, dev)
+#define transport_class_to_sas_port(dev) \
+ dev_to_sas_port((dev)->parent)
+
+struct sas_phy_linkrates {
+ enum sas_linkrate maximum_linkrate;
+ enum sas_linkrate minimum_linkrate;
+};
/* The functions by which the transport class and the driver communicate */
struct sas_function_template {
int (*get_enclosure_identifier)(struct sas_rphy *, u64 *);
int (*get_bay_identifier)(struct sas_rphy *);
int (*phy_reset)(struct sas_phy *, int);
+ int (*phy_enable)(struct sas_phy *, int);
+ int (*set_phy_speed)(struct sas_phy *, struct sas_phy_linkrates *);
+ int (*smp_handler)(struct Scsi_Host *, struct sas_rphy *, struct request *);
};
+void sas_remove_children(struct device *);
extern void sas_remove_host(struct Scsi_Host *);
extern struct sas_phy *sas_phy_alloc(struct device *, int);
extern void sas_phy_delete(struct sas_phy *);
extern int scsi_is_sas_phy(const struct device *);
-extern struct sas_rphy *sas_rphy_alloc(struct sas_phy *);
+unsigned int sas_tlr_supported(struct scsi_device *);
+unsigned int sas_is_tlr_enabled(struct scsi_device *);
+void sas_disable_tlr(struct scsi_device *);
+void sas_enable_tlr(struct scsi_device *);
+
+extern struct sas_rphy *sas_end_device_alloc(struct sas_port *);
+extern struct sas_rphy *sas_expander_alloc(struct sas_port *, enum sas_device_type);
void sas_rphy_free(struct sas_rphy *);
extern int sas_rphy_add(struct sas_rphy *);
+extern void sas_rphy_remove(struct sas_rphy *);
extern void sas_rphy_delete(struct sas_rphy *);
extern int scsi_is_sas_rphy(const struct device *);
+struct sas_port *sas_port_alloc(struct device *, int);
+struct sas_port *sas_port_alloc_num(struct device *);
+int sas_port_add(struct sas_port *);
+void sas_port_free(struct sas_port *);
+void sas_port_delete(struct sas_port *);
+void sas_port_add_phy(struct sas_port *, struct sas_phy *);
+void sas_port_delete_phy(struct sas_port *, struct sas_phy *);
+void sas_port_mark_backlink(struct sas_port *);
+int scsi_is_sas_port(const struct device *);
+
extern struct scsi_transport_template *
sas_attach_transport(struct sas_function_template *);
extern void sas_release_transport(struct scsi_transport_template *);
+int sas_read_port_mode_page(struct scsi_device *);
+
+static inline int
+scsi_is_sas_expander_device(struct device *dev)
+{
+ struct sas_rphy *rphy;
+ if (!scsi_is_sas_rphy(dev))
+ return 0;
+ rphy = dev_to_rphy(dev);
+ return rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE ||
+ rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE;
+}
+
+#define scsi_is_sas_phy_local(phy) scsi_is_host_device((phy)->dev.parent)
#endif /* SCSI_TRANSPORT_SAS_H */
Code Review / linux-2.6.git / blobdiff