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>
9 struct scsi_transport_template;
13 enum sas_device_type {
16 SAS_EDGE_EXPANDER_DEVICE = 2,
17 SAS_FANOUT_EXPANDER_DEVICE = 3,
20 static inline int sas_protocol_ata(enum sas_protocol proto)
22 return ((proto & SAS_PROTOCOL_SATA) ||
23 (proto & SAS_PROTOCOL_STP))? 1 : 0;
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 SAS_LINK_RATE_12_0_GBPS = 11,
40 /* These are virtual to the transport class and may never
41 * be signalled normally since the standard defined field
43 SAS_LINK_RATE_FAILED = 0x10,
44 SAS_PHY_VIRTUAL = 0x11,
48 enum sas_device_type device_type;
49 enum sas_protocol initiator_port_protocols;
50 enum sas_protocol target_port_protocols;
60 /* phy identification */
61 struct sas_identify identify;
64 enum sas_linkrate negotiated_linkrate;
65 enum sas_linkrate minimum_linkrate_hw;
66 enum sas_linkrate minimum_linkrate;
67 enum sas_linkrate maximum_linkrate_hw;
68 enum sas_linkrate maximum_linkrate;
70 /* link error statistics */
71 u32 invalid_dword_count;
72 u32 running_disparity_error_count;
73 u32 loss_of_dword_sync_count;
74 u32 phy_reset_problem_count;
76 /* for the list of phys belonging to a port */
77 struct list_head port_siblings;
79 /* available to the lldd */
83 #define dev_to_phy(d) \
84 container_of((d), struct sas_phy, dev)
85 #define transport_class_to_phy(dev) \
86 dev_to_phy((dev)->parent)
87 #define phy_to_shost(phy) \
88 dev_to_shost((phy)->dev.parent)
93 struct sas_identify identify;
94 struct list_head list;
95 struct request_queue *q;
99 #define dev_to_rphy(d) \
100 container_of((d), struct sas_rphy, dev)
101 #define transport_class_to_rphy(dev) \
102 dev_to_rphy((dev)->parent)
103 #define rphy_to_shost(rphy) \
104 dev_to_shost((rphy)->dev.parent)
105 #define target_to_rphy(targ) \
106 dev_to_rphy((targ)->dev.parent)
108 struct sas_end_device {
109 struct sas_rphy rphy;
111 unsigned ready_led_meaning:1;
112 unsigned tlr_supported:1;
113 unsigned tlr_enabled:1;
115 u16 I_T_nexus_loss_timeout;
116 u16 initiator_response_timeout;
118 #define rphy_to_end_device(r) \
119 container_of((r), struct sas_end_device, rphy)
121 struct sas_expander_device {
125 #define SAS_EXPANDER_VENDOR_ID_LEN 8
126 char vendor_id[SAS_EXPANDER_VENDOR_ID_LEN+1];
127 #define SAS_EXPANDER_PRODUCT_ID_LEN 16
128 char product_id[SAS_EXPANDER_PRODUCT_ID_LEN+1];
129 #define SAS_EXPANDER_PRODUCT_REV_LEN 4
130 char product_rev[SAS_EXPANDER_PRODUCT_REV_LEN+1];
131 #define SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN 8
132 char component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN+1];
134 u8 component_revision_id;
136 struct sas_rphy rphy;
139 #define rphy_to_expander_device(r) \
140 container_of((r), struct sas_expander_device, rphy)
148 unsigned int is_backlink:1;
150 /* the other end of the link */
151 struct sas_rphy *rphy;
153 struct mutex phy_list_mutex;
154 struct list_head phy_list;
157 #define dev_to_sas_port(d) \
158 container_of((d), struct sas_port, dev)
159 #define transport_class_to_sas_port(dev) \
160 dev_to_sas_port((dev)->parent)
162 struct sas_phy_linkrates {
163 enum sas_linkrate maximum_linkrate;
164 enum sas_linkrate minimum_linkrate;
167 /* The functions by which the transport class and the driver communicate */
168 struct sas_function_template {
169 int (*get_linkerrors)(struct sas_phy *);
170 int (*get_enclosure_identifier)(struct sas_rphy *, u64 *);
171 int (*get_bay_identifier)(struct sas_rphy *);
172 int (*phy_reset)(struct sas_phy *, int);
173 int (*phy_enable)(struct sas_phy *, int);
174 int (*phy_setup)(struct sas_phy *);
175 void (*phy_release)(struct sas_phy *);
176 int (*set_phy_speed)(struct sas_phy *, struct sas_phy_linkrates *);
177 int (*smp_handler)(struct Scsi_Host *, struct sas_rphy *, struct request *);
181 void sas_remove_children(struct device *);
182 extern void sas_remove_host(struct Scsi_Host *);
184 extern struct sas_phy *sas_phy_alloc(struct device *, int);
185 extern void sas_phy_free(struct sas_phy *);
186 extern int sas_phy_add(struct sas_phy *);
187 extern void sas_phy_delete(struct sas_phy *);
188 extern int scsi_is_sas_phy(const struct device *);
190 unsigned int sas_tlr_supported(struct scsi_device *);
191 unsigned int sas_is_tlr_enabled(struct scsi_device *);
192 void sas_disable_tlr(struct scsi_device *);
193 void sas_enable_tlr(struct scsi_device *);
195 extern struct sas_rphy *sas_end_device_alloc(struct sas_port *);
196 extern struct sas_rphy *sas_expander_alloc(struct sas_port *, enum sas_device_type);
197 void sas_rphy_free(struct sas_rphy *);
198 extern int sas_rphy_add(struct sas_rphy *);
199 extern void sas_rphy_remove(struct sas_rphy *);
200 extern void sas_rphy_delete(struct sas_rphy *);
201 extern void sas_rphy_unlink(struct sas_rphy *);
202 extern int scsi_is_sas_rphy(const struct device *);
204 struct sas_port *sas_port_alloc(struct device *, int);
205 struct sas_port *sas_port_alloc_num(struct device *);
206 int sas_port_add(struct sas_port *);
207 void sas_port_free(struct sas_port *);
208 void sas_port_delete(struct sas_port *);
209 void sas_port_add_phy(struct sas_port *, struct sas_phy *);
210 void sas_port_delete_phy(struct sas_port *, struct sas_phy *);
211 void sas_port_mark_backlink(struct sas_port *);
212 int scsi_is_sas_port(const struct device *);
213 struct sas_phy *sas_port_get_phy(struct sas_port *port);
214 static inline void sas_port_put_phy(struct sas_phy *phy)
217 put_device(&phy->dev);
220 extern struct scsi_transport_template *
221 sas_attach_transport(struct sas_function_template *);
222 extern void sas_release_transport(struct scsi_transport_template *);
223 int sas_read_port_mode_page(struct scsi_device *);
226 scsi_is_sas_expander_device(struct device *dev)
228 struct sas_rphy *rphy;
229 if (!scsi_is_sas_rphy(dev))
231 rphy = dev_to_rphy(dev);
232 return rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE ||
233 rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE;
236 #define scsi_is_sas_phy_local(phy) scsi_is_host_device((phy)->dev.parent)
238 #endif /* SCSI_TRANSPORT_SAS_H */