Merge master.kernel.org:/pub/scm/linux/kernel/git/tmlind/linux-omap-upstream into...

[pandora-kernel.git] / include / scsi / scsi_transport_sas.h

diff --git a/include/scsi/scsi_transport_sas.h b/include/scsi/scsi_transport_sas.h
index e3c503c..5302437 100644 (file)
--- a/include/scsi/scsi_transport_sas.h
+++ b/include/scsi/scsi_transport_sas.h
@@ -24,15 +24,23 @@ enum sas_protocol {
 };
 
 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,
+       /* 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 {
@@ -57,9 +65,6 @@ struct sas_phy {
        enum sas_linkrate       maximum_linkrate_hw;
        enum sas_linkrate       maximum_linkrate;
 
-       /* internal state */
-       unsigned int            local_attached : 1;
-
        /* link error statistics */
        u32                     invalid_dword_count;
        u32                     running_disparity_error_count;
@@ -106,6 +111,7 @@ struct sas_end_device {
 
 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];
@@ -127,8 +133,10 @@ struct sas_expander_device {
 struct sas_port {
        struct device           dev;
 
-       u8                      port_identifier;
+       int                     port_identifier;
        int                     num_phys;
+       /* port flags */
+       unsigned int            is_backlink:1;
 
        /* the other end of the link */
        struct sas_rphy         *rphy;
@@ -142,12 +150,18 @@ struct sas_port {
 #define transport_class_to_sas_port(cdev) \
        dev_to_sas_port((cdev)->dev)
 
+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_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);
+       int (*set_phy_speed)(struct sas_phy *, struct sas_phy_linkrates *);
 };
 
 
@@ -168,11 +182,13 @@ 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 *
@@ -191,4 +207,6 @@ scsi_is_sas_expander_device(struct device *dev)
                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 */