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;
58 /* phy identification */
59 struct sas_identify identify;
62 enum sas_linkrate negotiated_linkrate;
63 enum sas_linkrate minimum_linkrate_hw;
64 enum sas_linkrate minimum_linkrate;
65 enum sas_linkrate maximum_linkrate_hw;
66 enum sas_linkrate maximum_linkrate;
68 /* link error statistics */
69 u32 invalid_dword_count;
70 u32 running_disparity_error_count;
71 u32 loss_of_dword_sync_count;
72 u32 phy_reset_problem_count;
74 /* for the list of phys belonging to a port */
75 struct list_head port_siblings;
78 #define dev_to_phy(d) \
79 container_of((d), struct sas_phy, dev)
80 #define transport_class_to_phy(cdev) \
81 dev_to_phy((cdev)->dev)
82 #define phy_to_shost(phy) \
83 dev_to_shost((phy)->dev.parent)
87 struct sas_identify identify;
88 struct list_head list;
92 #define dev_to_rphy(d) \
93 container_of((d), struct sas_rphy, dev)
94 #define transport_class_to_rphy(cdev) \
95 dev_to_rphy((cdev)->dev)
96 #define rphy_to_shost(rphy) \
97 dev_to_shost((rphy)->dev.parent)
98 #define target_to_rphy(targ) \
99 dev_to_rphy((targ)->dev.parent)
101 struct sas_end_device {
102 struct sas_rphy rphy;
104 unsigned ready_led_meaning:1;
106 u16 I_T_nexus_loss_timeout;
107 u16 initiator_response_timeout;
109 #define rphy_to_end_device(r) \
110 container_of((r), struct sas_end_device, rphy)
112 struct sas_expander_device {
116 #define SAS_EXPANDER_VENDOR_ID_LEN 8
117 char vendor_id[SAS_EXPANDER_VENDOR_ID_LEN+1];
118 #define SAS_EXPANDER_PRODUCT_ID_LEN 16
119 char product_id[SAS_EXPANDER_PRODUCT_ID_LEN+1];
120 #define SAS_EXPANDER_PRODUCT_REV_LEN 4
121 char product_rev[SAS_EXPANDER_PRODUCT_REV_LEN+1];
122 #define SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN 8
123 char component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN+1];
125 u8 component_revision_id;
127 struct sas_rphy rphy;
130 #define rphy_to_expander_device(r) \
131 container_of((r), struct sas_expander_device, rphy)
139 unsigned int is_backlink:1;
141 /* the other end of the link */
142 struct sas_rphy *rphy;
144 struct mutex phy_list_mutex;
145 struct list_head phy_list;
148 #define dev_to_sas_port(d) \
149 container_of((d), struct sas_port, dev)
150 #define transport_class_to_sas_port(cdev) \
151 dev_to_sas_port((cdev)->dev)
153 struct sas_phy_linkrates {
154 enum sas_linkrate maximum_linkrate;
155 enum sas_linkrate minimum_linkrate;
158 /* The functions by which the transport class and the driver communicate */
159 struct sas_function_template {
160 int (*get_linkerrors)(struct sas_phy *);
161 int (*get_enclosure_identifier)(struct sas_rphy *, u64 *);
162 int (*get_bay_identifier)(struct sas_rphy *);
163 int (*phy_reset)(struct sas_phy *, int);
164 int (*set_phy_speed)(struct sas_phy *, struct sas_phy_linkrates *);
168 void sas_remove_children(struct device *);
169 extern void sas_remove_host(struct Scsi_Host *);
171 extern struct sas_phy *sas_phy_alloc(struct device *, int);
172 extern void sas_phy_free(struct sas_phy *);
173 extern int sas_phy_add(struct sas_phy *);
174 extern void sas_phy_delete(struct sas_phy *);
175 extern int scsi_is_sas_phy(const struct device *);
177 extern struct sas_rphy *sas_end_device_alloc(struct sas_port *);
178 extern struct sas_rphy *sas_expander_alloc(struct sas_port *, enum sas_device_type);
179 void sas_rphy_free(struct sas_rphy *);
180 extern int sas_rphy_add(struct sas_rphy *);
181 extern void sas_rphy_delete(struct sas_rphy *);
182 extern int scsi_is_sas_rphy(const struct device *);
184 struct sas_port *sas_port_alloc(struct device *, int);
185 struct sas_port *sas_port_alloc_num(struct device *);
186 int sas_port_add(struct sas_port *);
187 void sas_port_free(struct sas_port *);
188 void sas_port_delete(struct sas_port *);
189 void sas_port_add_phy(struct sas_port *, struct sas_phy *);
190 void sas_port_delete_phy(struct sas_port *, struct sas_phy *);
191 void sas_port_mark_backlink(struct sas_port *);
192 int scsi_is_sas_port(const struct device *);
194 extern struct scsi_transport_template *
195 sas_attach_transport(struct sas_function_template *);
196 extern void sas_release_transport(struct scsi_transport_template *);
197 int sas_read_port_mode_page(struct scsi_device *);
200 scsi_is_sas_expander_device(struct device *dev)
202 struct sas_rphy *rphy;
203 if (!scsi_is_sas_rphy(dev))
205 rphy = dev_to_rphy(dev);
206 return rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE ||
207 rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE;
210 #define scsi_is_sas_phy_local(phy) scsi_is_host_device((phy)->dev.parent)
212 #endif /* SCSI_TRANSPORT_SAS_H */