This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / scsi / scsi_transport_sas.h

diff --git a/include/scsi/scsi_transport_sas.h b/include/scsi/scsi_transport_sas.h
new file mode 100644 (file)
index 0000000..93cfb4b
--- /dev/null
+++ b/include/scsi/scsi_transport_sas.h
@@ -0,0 +1,167 @@
+#ifndef SCSI_TRANSPORT_SAS_H
+#define SCSI_TRANSPORT_SAS_H
+
+#include <linux/transport_class.h>
+#include <linux/types.h>
+
+struct scsi_transport_template;
+struct sas_rphy;
+
+
+enum sas_device_type {
+       SAS_PHY_UNUSED,
+       SAS_END_DEVICE,
+       SAS_EDGE_EXPANDER_DEVICE,
+       SAS_FANOUT_EXPANDER_DEVICE,
+};
+
+enum sas_protocol {
+       SAS_PROTOCOL_SATA               = 0x01,
+       SAS_PROTOCOL_SMP                = 0x02,
+       SAS_PROTOCOL_STP                = 0x04,
+       SAS_PROTOCOL_SSP                = 0x08,
+};
+
+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_RATE_6_0_GBPS,
+       SAS_LINK_VIRTUAL,
+};
+
+struct sas_identify {
+       enum sas_device_type    device_type;
+       enum sas_protocol       initiator_port_protocols;
+       enum sas_protocol       target_port_protocols;
+       u64                     sas_address;
+       u8                      phy_identifier;
+};
+
+struct sas_phy {
+       struct device           dev;
+       int                     number;
+
+       /* phy identification */
+       struct sas_identify     identify;
+
+       /* phy attributes */
+       enum sas_linkrate       negotiated_linkrate;
+       enum sas_linkrate       minimum_linkrate_hw;
+       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                     running_disparity_error_count;
+       u32                     loss_of_dword_sync_count;
+       u32                     phy_reset_problem_count;
+
+       /* the other end of the link */
+       struct sas_rphy         *rphy;
+};
+
+#define dev_to_phy(d) \
+       container_of((d), struct sas_phy, dev)
+#define transport_class_to_phy(cdev) \
+       dev_to_phy((cdev)->dev)
+#define phy_to_shost(phy) \
+       dev_to_shost((phy)->dev.parent)
+
+struct sas_rphy {
+       struct device           dev;
+       struct sas_identify     identify;
+       struct list_head        list;
+       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 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;
+       /* 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;
+
+       #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)
+
+/* The functions by which the transport class and the driver communicate */
+struct sas_function_template {
+       int (*get_linkerrors)(struct sas_phy *);
+       int (*get_enclosure_identifier)(struct sas_rphy *, u64 *);
+       int (*get_bay_identifier)(struct sas_rphy *);
+       int (*phy_reset)(struct sas_phy *, int);
+};
+
+
+extern void sas_remove_host(struct Scsi_Host *);
+
+extern struct sas_phy *sas_phy_alloc(struct device *, int);
+extern void sas_phy_free(struct sas_phy *);
+extern int sas_phy_add(struct sas_phy *);
+extern void sas_phy_delete(struct sas_phy *);
+extern int scsi_is_sas_phy(const struct device *);
+
+extern struct sas_rphy *sas_end_device_alloc(struct sas_phy *);
+extern struct sas_rphy *sas_expander_alloc(struct sas_phy *, enum sas_device_type);
+void sas_rphy_free(struct sas_rphy *);
+extern int sas_rphy_add(struct sas_rphy *);
+extern void sas_rphy_delete(struct sas_rphy *);
+extern int scsi_is_sas_rphy(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;
+}
+
+#endif /* SCSI_TRANSPORT_SAS_H */