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 /* These Values are defined in the SAS standard */
28 SAS_LINK_RATE_UNKNOWN = 0,
30 SAS_PHY_RESET_PROBLEM = 2,
31 SAS_SATA_SPINUP_HOLD = 3,
32 SAS_SATA_PORT_SELECTOR = 4,
33 SAS_PHY_RESET_IN_PROGRESS = 5,
34 SAS_LINK_RATE_1_5_GBPS = 8,
35 SAS_LINK_RATE_G1 = SAS_LINK_RATE_1_5_GBPS,
36 SAS_LINK_RATE_3_0_GBPS = 9,
37 SAS_LINK_RATE_G2 = SAS_LINK_RATE_3_0_GBPS,
38 SAS_LINK_RATE_6_0_GBPS = 10,
39 /* These are virtual to the transport class and may never
40 * be signalled normally since the standard defined field
42 SAS_LINK_RATE_FAILED = 0x10,
43 SAS_PHY_VIRTUAL = 0x11,
47 enum sas_device_type device_type;
48 enum sas_protocol initiator_port_protocols;
49 enum sas_protocol target_port_protocols;
59 /* phy identification */
60 struct sas_identify identify;
63 enum sas_linkrate negotiated_linkrate;
64 enum sas_linkrate minimum_linkrate_hw;
65 enum sas_linkrate minimum_linkrate;
66 enum sas_linkrate maximum_linkrate_hw;
67 enum sas_linkrate maximum_linkrate;
69 /* link error statistics */
70 u32 invalid_dword_count;
71 u32 running_disparity_error_count;
72 u32 loss_of_dword_sync_count;
73 u32 phy_reset_problem_count;
75 /* for the list of phys belonging to a port */
76 struct list_head port_siblings;
78 struct work_struct reset_work;
81 #define dev_to_phy(d) \
82 container_of((d), struct sas_phy, dev)
83 #define transport_class_to_phy(cdev) \
84 dev_to_phy((cdev)->dev)
85 #define phy_to_shost(phy) \
86 dev_to_shost((phy)->dev.parent)
90 struct sas_identify identify;
91 struct list_head list;
95 #define dev_to_rphy(d) \
96 container_of((d), struct sas_rphy, dev)
97 #define transport_class_to_rphy(cdev) \
98 dev_to_rphy((cdev)->dev)
99 #define rphy_to_shost(rphy) \
100 dev_to_shost((rphy)->dev.parent)
101 #define target_to_rphy(targ) \
102 dev_to_rphy((targ)->dev.parent)
104 struct sas_end_device {
105 struct sas_rphy rphy;
107 unsigned ready_led_meaning:1;
109 u16 I_T_nexus_loss_timeout;
110 u16 initiator_response_timeout;
112 #define rphy_to_end_device(r) \
113 container_of((r), struct sas_end_device, rphy)
115 struct sas_expander_device {
119 #define SAS_EXPANDER_VENDOR_ID_LEN 8
120 char vendor_id[SAS_EXPANDER_VENDOR_ID_LEN+1];
121 #define SAS_EXPANDER_PRODUCT_ID_LEN 16
122 char product_id[SAS_EXPANDER_PRODUCT_ID_LEN+1];
123 #define SAS_EXPANDER_PRODUCT_REV_LEN 4
124 char product_rev[SAS_EXPANDER_PRODUCT_REV_LEN+1];
125 #define SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN 8
126 char component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN+1];
128 u8 component_revision_id;
130 struct sas_rphy rphy;
133 #define rphy_to_expander_device(r) \
134 container_of((r), struct sas_expander_device, rphy)
142 unsigned int is_backlink:1;
144 /* the other end of the link */
145 struct sas_rphy *rphy;
147 struct mutex phy_list_mutex;
148 struct list_head phy_list;
151 #define dev_to_sas_port(d) \
152 container_of((d), struct sas_port, dev)
153 #define transport_class_to_sas_port(cdev) \
154 dev_to_sas_port((cdev)->dev)
156 struct sas_phy_linkrates {
157 enum sas_linkrate maximum_linkrate;
158 enum sas_linkrate minimum_linkrate;
161 /* The functions by which the transport class and the driver communicate */
162 struct sas_function_template {
163 int (*get_linkerrors)(struct sas_phy *);
164 int (*get_enclosure_identifier)(struct sas_rphy *, u64 *);
165 int (*get_bay_identifier)(struct sas_rphy *);
166 int (*phy_reset)(struct sas_phy *, int);
167 int (*phy_enable)(struct sas_phy *, int);
168 int (*set_phy_speed)(struct sas_phy *, struct sas_phy_linkrates *);
172 void sas_remove_children(struct device *);
173 extern void sas_remove_host(struct Scsi_Host *);
175 extern struct sas_phy *sas_phy_alloc(struct device *, int);
176 extern void sas_phy_free(struct sas_phy *);
177 extern int sas_phy_add(struct sas_phy *);
178 extern void sas_phy_delete(struct sas_phy *);
179 extern int scsi_is_sas_phy(const struct device *);
181 extern struct sas_rphy *sas_end_device_alloc(struct sas_port *);
182 extern struct sas_rphy *sas_expander_alloc(struct sas_port *, enum sas_device_type);
183 void sas_rphy_free(struct sas_rphy *);
184 extern int sas_rphy_add(struct sas_rphy *);
185 extern void sas_rphy_remove(struct sas_rphy *);
186 extern void sas_rphy_delete(struct sas_rphy *);
187 extern int scsi_is_sas_rphy(const struct device *);
189 struct sas_port *sas_port_alloc(struct device *, int);
190 struct sas_port *sas_port_alloc_num(struct device *);
191 int sas_port_add(struct sas_port *);
192 void sas_port_free(struct sas_port *);
193 void sas_port_delete(struct sas_port *);
194 void sas_port_add_phy(struct sas_port *, struct sas_phy *);
195 void sas_port_delete_phy(struct sas_port *, struct sas_phy *);
196 void sas_port_mark_backlink(struct sas_port *);
197 int scsi_is_sas_port(const struct device *);
199 extern struct scsi_transport_template *
200 sas_attach_transport(struct sas_function_template *);
201 extern void sas_release_transport(struct scsi_transport_template *);
202 int sas_read_port_mode_page(struct scsi_device *);
205 scsi_is_sas_expander_device(struct device *dev)
207 struct sas_rphy *rphy;
208 if (!scsi_is_sas_rphy(dev))
210 rphy = dev_to_rphy(dev);
211 return rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE ||
212 rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE;
215 #define scsi_is_sas_phy_local(phy) scsi_is_host_device((phy)->dev.parent)
217 #endif /* SCSI_TRANSPORT_SAS_H */