1 #ifndef SCSI_TRANSPORT_SAS_H
2 #define SCSI_TRANSPORT_SAS_H
4 #include <linux/transport_class.h>
5 #include <linux/types.h>
6 #include <linux/mutex.h>
8 struct scsi_transport_template;
12 enum sas_device_type {
15 SAS_EDGE_EXPANDER_DEVICE,
16 SAS_FANOUT_EXPANDER_DEVICE,
20 SAS_PROTOCOL_SATA = 0x01,
21 SAS_PROTOCOL_SMP = 0x02,
22 SAS_PROTOCOL_STP = 0x04,
23 SAS_PROTOCOL_SSP = 0x08,
27 SAS_LINK_RATE_UNKNOWN,
31 SAS_SATA_PORT_SELECTOR,
32 SAS_LINK_RATE_1_5_GBPS,
33 SAS_LINK_RATE_3_0_GBPS,
34 SAS_LINK_RATE_6_0_GBPS,
39 enum sas_device_type device_type;
40 enum sas_protocol initiator_port_protocols;
41 enum sas_protocol target_port_protocols;
50 /* phy identification */
51 struct sas_identify identify;
54 enum sas_linkrate negotiated_linkrate;
55 enum sas_linkrate minimum_linkrate_hw;
56 enum sas_linkrate minimum_linkrate;
57 enum sas_linkrate maximum_linkrate_hw;
58 enum sas_linkrate maximum_linkrate;
61 unsigned int local_attached : 1;
63 /* link error statistics */
64 u32 invalid_dword_count;
65 u32 running_disparity_error_count;
66 u32 loss_of_dword_sync_count;
67 u32 phy_reset_problem_count;
69 /* for the list of phys belonging to a port */
70 struct list_head port_siblings;
73 #define dev_to_phy(d) \
74 container_of((d), struct sas_phy, dev)
75 #define transport_class_to_phy(cdev) \
76 dev_to_phy((cdev)->dev)
77 #define phy_to_shost(phy) \
78 dev_to_shost((phy)->dev.parent)
82 struct sas_identify identify;
83 struct list_head list;
87 #define dev_to_rphy(d) \
88 container_of((d), struct sas_rphy, dev)
89 #define transport_class_to_rphy(cdev) \
90 dev_to_rphy((cdev)->dev)
91 #define rphy_to_shost(rphy) \
92 dev_to_shost((rphy)->dev.parent)
93 #define target_to_rphy(targ) \
94 dev_to_rphy((targ)->dev.parent)
96 struct sas_end_device {
99 unsigned ready_led_meaning:1;
101 u16 I_T_nexus_loss_timeout;
102 u16 initiator_response_timeout;
104 #define rphy_to_end_device(r) \
105 container_of((r), struct sas_end_device, rphy)
107 struct sas_expander_device {
111 #define SAS_EXPANDER_VENDOR_ID_LEN 8
112 char vendor_id[SAS_EXPANDER_VENDOR_ID_LEN+1];
113 #define SAS_EXPANDER_PRODUCT_ID_LEN 16
114 char product_id[SAS_EXPANDER_PRODUCT_ID_LEN+1];
115 #define SAS_EXPANDER_PRODUCT_REV_LEN 4
116 char product_rev[SAS_EXPANDER_PRODUCT_REV_LEN+1];
117 #define SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN 8
118 char component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN+1];
120 u8 component_revision_id;
122 struct sas_rphy rphy;
125 #define rphy_to_expander_device(r) \
126 container_of((r), struct sas_expander_device, rphy)
134 /* the other end of the link */
135 struct sas_rphy *rphy;
137 struct mutex phy_list_mutex;
138 struct list_head phy_list;
141 #define dev_to_sas_port(d) \
142 container_of((d), struct sas_port, dev)
143 #define transport_class_to_sas_port(cdev) \
144 dev_to_sas_port((cdev)->dev)
146 /* The functions by which the transport class and the driver communicate */
147 struct sas_function_template {
148 int (*get_linkerrors)(struct sas_phy *);
149 int (*get_enclosure_identifier)(struct sas_rphy *, u64 *);
150 int (*get_bay_identifier)(struct sas_rphy *);
151 int (*phy_reset)(struct sas_phy *, int);
155 void sas_remove_children(struct device *);
156 extern void sas_remove_host(struct Scsi_Host *);
158 extern struct sas_phy *sas_phy_alloc(struct device *, int);
159 extern void sas_phy_free(struct sas_phy *);
160 extern int sas_phy_add(struct sas_phy *);
161 extern void sas_phy_delete(struct sas_phy *);
162 extern int scsi_is_sas_phy(const struct device *);
164 extern struct sas_rphy *sas_end_device_alloc(struct sas_port *);
165 extern struct sas_rphy *sas_expander_alloc(struct sas_port *, enum sas_device_type);
166 void sas_rphy_free(struct sas_rphy *);
167 extern int sas_rphy_add(struct sas_rphy *);
168 extern void sas_rphy_delete(struct sas_rphy *);
169 extern int scsi_is_sas_rphy(const struct device *);
171 struct sas_port *sas_port_alloc(struct device *, int);
172 struct sas_port *sas_port_alloc_num(struct device *);
173 int sas_port_add(struct sas_port *);
174 void sas_port_free(struct sas_port *);
175 void sas_port_delete(struct sas_port *);
176 void sas_port_add_phy(struct sas_port *, struct sas_phy *);
177 void sas_port_delete_phy(struct sas_port *, struct sas_phy *);
178 int scsi_is_sas_port(const struct device *);
180 extern struct scsi_transport_template *
181 sas_attach_transport(struct sas_function_template *);
182 extern void sas_release_transport(struct scsi_transport_template *);
183 int sas_read_port_mode_page(struct scsi_device *);
186 scsi_is_sas_expander_device(struct device *dev)
188 struct sas_rphy *rphy;
189 if (!scsi_is_sas_rphy(dev))
191 rphy = dev_to_rphy(dev);
192 return rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE ||
193 rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE;
196 #endif /* SCSI_TRANSPORT_SAS_H */