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 unsigned int is_backlink:1;
136 /* the other end of the link */
137 struct sas_rphy *rphy;
139 struct mutex phy_list_mutex;
140 struct list_head phy_list;
143 #define dev_to_sas_port(d) \
144 container_of((d), struct sas_port, dev)
145 #define transport_class_to_sas_port(cdev) \
146 dev_to_sas_port((cdev)->dev)
148 /* The functions by which the transport class and the driver communicate */
149 struct sas_function_template {
150 int (*get_linkerrors)(struct sas_phy *);
151 int (*get_enclosure_identifier)(struct sas_rphy *, u64 *);
152 int (*get_bay_identifier)(struct sas_rphy *);
153 int (*phy_reset)(struct sas_phy *, int);
157 void sas_remove_children(struct device *);
158 extern void sas_remove_host(struct Scsi_Host *);
160 extern struct sas_phy *sas_phy_alloc(struct device *, int);
161 extern void sas_phy_free(struct sas_phy *);
162 extern int sas_phy_add(struct sas_phy *);
163 extern void sas_phy_delete(struct sas_phy *);
164 extern int scsi_is_sas_phy(const struct device *);
166 extern struct sas_rphy *sas_end_device_alloc(struct sas_port *);
167 extern struct sas_rphy *sas_expander_alloc(struct sas_port *, enum sas_device_type);
168 void sas_rphy_free(struct sas_rphy *);
169 extern int sas_rphy_add(struct sas_rphy *);
170 extern void sas_rphy_delete(struct sas_rphy *);
171 extern int scsi_is_sas_rphy(const struct device *);
173 struct sas_port *sas_port_alloc(struct device *, int);
174 struct sas_port *sas_port_alloc_num(struct device *);
175 int sas_port_add(struct sas_port *);
176 void sas_port_free(struct sas_port *);
177 void sas_port_delete(struct sas_port *);
178 void sas_port_add_phy(struct sas_port *, struct sas_phy *);
179 void sas_port_delete_phy(struct sas_port *, struct sas_phy *);
180 void sas_port_mark_backlink(struct sas_port *);
181 int scsi_is_sas_port(const struct device *);
183 extern struct scsi_transport_template *
184 sas_attach_transport(struct sas_function_template *);
185 extern void sas_release_transport(struct scsi_transport_template *);
186 int sas_read_port_mode_page(struct scsi_device *);
189 scsi_is_sas_expander_device(struct device *dev)
191 struct sas_rphy *rphy;
192 if (!scsi_is_sas_rphy(dev))
194 rphy = dev_to_rphy(dev);
195 return rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE ||
196 rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE;
199 #endif /* SCSI_TRANSPORT_SAS_H */