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c7ebbbce CH |
1 | #ifndef SCSI_TRANSPORT_SAS_H |
2 | #define SCSI_TRANSPORT_SAS_H | |
3 | ||
4 | #include <linux/transport_class.h> | |
5 | #include <linux/types.h> | |
65c92b09 | 6 | #include <linux/mutex.h> |
c7ebbbce CH |
7 | |
8 | struct scsi_transport_template; | |
9 | struct sas_rphy; | |
10 | ||
11 | ||
12 | enum sas_device_type { | |
13 | SAS_PHY_UNUSED, | |
14 | SAS_END_DEVICE, | |
15 | SAS_EDGE_EXPANDER_DEVICE, | |
16 | SAS_FANOUT_EXPANDER_DEVICE, | |
17 | }; | |
18 | ||
19 | enum sas_protocol { | |
20 | SAS_PROTOCOL_SATA = 0x01, | |
21 | SAS_PROTOCOL_SMP = 0x02, | |
22 | SAS_PROTOCOL_STP = 0x04, | |
23 | SAS_PROTOCOL_SSP = 0x08, | |
24 | }; | |
25 | ||
26 | enum sas_linkrate { | |
27 | SAS_LINK_RATE_UNKNOWN, | |
28 | SAS_PHY_DISABLED, | |
29 | SAS_LINK_RATE_FAILED, | |
30 | SAS_SATA_SPINUP_HOLD, | |
31 | SAS_SATA_PORT_SELECTOR, | |
32 | SAS_LINK_RATE_1_5_GBPS, | |
33 | SAS_LINK_RATE_3_0_GBPS, | |
7e6dff62 | 34 | SAS_LINK_RATE_6_0_GBPS, |
c7ebbbce CH |
35 | SAS_LINK_VIRTUAL, |
36 | }; | |
37 | ||
38 | struct sas_identify { | |
39 | enum sas_device_type device_type; | |
40 | enum sas_protocol initiator_port_protocols; | |
41 | enum sas_protocol target_port_protocols; | |
42 | u64 sas_address; | |
43 | u8 phy_identifier; | |
44 | }; | |
45 | ||
c7ebbbce CH |
46 | struct sas_phy { |
47 | struct device dev; | |
48 | int number; | |
c3ee74c4 CH |
49 | |
50 | /* phy identification */ | |
c7ebbbce | 51 | struct sas_identify identify; |
c3ee74c4 CH |
52 | |
53 | /* phy attributes */ | |
c7ebbbce CH |
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; | |
c3ee74c4 | 59 | |
ac01bbbd CH |
60 | /* internal state */ |
61 | unsigned int local_attached : 1; | |
62 | ||
c3ee74c4 CH |
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; | |
68 | ||
65c92b09 JB |
69 | /* for the list of phys belonging to a port */ |
70 | struct list_head port_siblings; | |
c7ebbbce CH |
71 | }; |
72 | ||
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) | |
79 | ||
80 | struct sas_rphy { | |
81 | struct device dev; | |
82 | struct sas_identify identify; | |
83 | struct list_head list; | |
84 | u32 scsi_target_id; | |
85 | }; | |
86 | ||
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) | |
42ab0360 JB |
93 | #define target_to_rphy(targ) \ |
94 | dev_to_rphy((targ)->dev.parent) | |
95 | ||
96 | struct sas_end_device { | |
97 | struct sas_rphy rphy; | |
98 | /* flags */ | |
99 | unsigned ready_led_meaning:1; | |
100 | /* parameters */ | |
101 | u16 I_T_nexus_loss_timeout; | |
102 | u16 initiator_response_timeout; | |
103 | }; | |
104 | #define rphy_to_end_device(r) \ | |
105 | container_of((r), struct sas_end_device, rphy) | |
c7ebbbce | 106 | |
79cb1819 JB |
107 | struct sas_expander_device { |
108 | int level; | |
c9fefeb2 | 109 | int next_port_id; |
79cb1819 JB |
110 | |
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]; | |
119 | u16 component_id; | |
120 | u8 component_revision_id; | |
121 | ||
122 | struct sas_rphy rphy; | |
123 | ||
124 | }; | |
125 | #define rphy_to_expander_device(r) \ | |
126 | container_of((r), struct sas_expander_device, rphy) | |
c3ee74c4 | 127 | |
65c92b09 JB |
128 | struct sas_port { |
129 | struct device dev; | |
130 | ||
c9fefeb2 | 131 | int port_identifier; |
65c92b09 JB |
132 | int num_phys; |
133 | ||
134 | /* the other end of the link */ | |
135 | struct sas_rphy *rphy; | |
136 | ||
137 | struct mutex phy_list_mutex; | |
138 | struct list_head phy_list; | |
139 | }; | |
140 | ||
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) | |
145 | ||
c3ee74c4 CH |
146 | /* The functions by which the transport class and the driver communicate */ |
147 | struct sas_function_template { | |
148 | int (*get_linkerrors)(struct sas_phy *); | |
a0125641 CH |
149 | int (*get_enclosure_identifier)(struct sas_rphy *, u64 *); |
150 | int (*get_bay_identifier)(struct sas_rphy *); | |
07ba3a95 | 151 | int (*phy_reset)(struct sas_phy *, int); |
c3ee74c4 CH |
152 | }; |
153 | ||
154 | ||
65c92b09 | 155 | void sas_remove_children(struct device *); |
c7ebbbce CH |
156 | extern void sas_remove_host(struct Scsi_Host *); |
157 | ||
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 *); | |
163 | ||
65c92b09 JB |
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); | |
c7ebbbce CH |
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 *); | |
170 | ||
65c92b09 | 171 | struct sas_port *sas_port_alloc(struct device *, int); |
c9fefeb2 | 172 | struct sas_port *sas_port_alloc_num(struct device *); |
65c92b09 JB |
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 *); | |
179 | ||
c7ebbbce CH |
180 | extern struct scsi_transport_template * |
181 | sas_attach_transport(struct sas_function_template *); | |
182 | extern void sas_release_transport(struct scsi_transport_template *); | |
42ab0360 | 183 | int sas_read_port_mode_page(struct scsi_device *); |
c7ebbbce | 184 | |
79cb1819 JB |
185 | static inline int |
186 | scsi_is_sas_expander_device(struct device *dev) | |
187 | { | |
188 | struct sas_rphy *rphy; | |
189 | if (!scsi_is_sas_rphy(dev)) | |
190 | return 0; | |
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; | |
194 | } | |
195 | ||
c7ebbbce | 196 | #endif /* SCSI_TRANSPORT_SAS_H */ |