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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> | |
6 | ||
7 | struct scsi_transport_template; | |
8 | struct sas_rphy; | |
9 | ||
10 | ||
11 | enum sas_device_type { | |
12 | SAS_PHY_UNUSED, | |
13 | SAS_END_DEVICE, | |
14 | SAS_EDGE_EXPANDER_DEVICE, | |
15 | SAS_FANOUT_EXPANDER_DEVICE, | |
16 | }; | |
17 | ||
18 | enum sas_protocol { | |
19 | SAS_PROTOCOL_SATA = 0x01, | |
20 | SAS_PROTOCOL_SMP = 0x02, | |
21 | SAS_PROTOCOL_STP = 0x04, | |
22 | SAS_PROTOCOL_SSP = 0x08, | |
23 | }; | |
24 | ||
25 | enum sas_linkrate { | |
26 | SAS_LINK_RATE_UNKNOWN, | |
27 | SAS_PHY_DISABLED, | |
28 | SAS_LINK_RATE_FAILED, | |
29 | SAS_SATA_SPINUP_HOLD, | |
30 | SAS_SATA_PORT_SELECTOR, | |
31 | SAS_LINK_RATE_1_5_GBPS, | |
32 | SAS_LINK_RATE_3_0_GBPS, | |
7e6dff62 | 33 | SAS_LINK_RATE_6_0_GBPS, |
c7ebbbce CH |
34 | SAS_LINK_VIRTUAL, |
35 | }; | |
36 | ||
37 | struct sas_identify { | |
38 | enum sas_device_type device_type; | |
39 | enum sas_protocol initiator_port_protocols; | |
40 | enum sas_protocol target_port_protocols; | |
41 | u64 sas_address; | |
42 | u8 phy_identifier; | |
43 | }; | |
44 | ||
c7ebbbce CH |
45 | struct sas_phy { |
46 | struct device dev; | |
47 | int number; | |
c3ee74c4 CH |
48 | |
49 | /* phy identification */ | |
c7ebbbce | 50 | struct sas_identify identify; |
c3ee74c4 CH |
51 | |
52 | /* phy attributes */ | |
c7ebbbce CH |
53 | enum sas_linkrate negotiated_linkrate; |
54 | enum sas_linkrate minimum_linkrate_hw; | |
55 | enum sas_linkrate minimum_linkrate; | |
56 | enum sas_linkrate maximum_linkrate_hw; | |
57 | enum sas_linkrate maximum_linkrate; | |
58 | u8 port_identifier; | |
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 | ||
69 | /* the other end of the link */ | |
c7ebbbce CH |
70 | struct sas_rphy *rphy; |
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; | |
109 | ||
110 | #define SAS_EXPANDER_VENDOR_ID_LEN 8 | |
111 | char vendor_id[SAS_EXPANDER_VENDOR_ID_LEN+1]; | |
112 | #define SAS_EXPANDER_PRODUCT_ID_LEN 16 | |
113 | char product_id[SAS_EXPANDER_PRODUCT_ID_LEN+1]; | |
114 | #define SAS_EXPANDER_PRODUCT_REV_LEN 4 | |
115 | char product_rev[SAS_EXPANDER_PRODUCT_REV_LEN+1]; | |
116 | #define SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN 8 | |
117 | char component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN+1]; | |
118 | u16 component_id; | |
119 | u8 component_revision_id; | |
120 | ||
121 | struct sas_rphy rphy; | |
122 | ||
123 | }; | |
124 | #define rphy_to_expander_device(r) \ | |
125 | container_of((r), struct sas_expander_device, rphy) | |
c3ee74c4 CH |
126 | |
127 | /* The functions by which the transport class and the driver communicate */ | |
128 | struct sas_function_template { | |
129 | int (*get_linkerrors)(struct sas_phy *); | |
a0125641 CH |
130 | int (*get_enclosure_identifier)(struct sas_rphy *, u64 *); |
131 | int (*get_bay_identifier)(struct sas_rphy *); | |
07ba3a95 | 132 | int (*phy_reset)(struct sas_phy *, int); |
c3ee74c4 CH |
133 | }; |
134 | ||
135 | ||
c7ebbbce CH |
136 | extern void sas_remove_host(struct Scsi_Host *); |
137 | ||
138 | extern struct sas_phy *sas_phy_alloc(struct device *, int); | |
139 | extern void sas_phy_free(struct sas_phy *); | |
140 | extern int sas_phy_add(struct sas_phy *); | |
141 | extern void sas_phy_delete(struct sas_phy *); | |
142 | extern int scsi_is_sas_phy(const struct device *); | |
143 | ||
42ab0360 | 144 | extern struct sas_rphy *sas_end_device_alloc(struct sas_phy *); |
79cb1819 | 145 | extern struct sas_rphy *sas_expander_alloc(struct sas_phy *, enum sas_device_type); |
c7ebbbce CH |
146 | void sas_rphy_free(struct sas_rphy *); |
147 | extern int sas_rphy_add(struct sas_rphy *); | |
148 | extern void sas_rphy_delete(struct sas_rphy *); | |
149 | extern int scsi_is_sas_rphy(const struct device *); | |
150 | ||
151 | extern struct scsi_transport_template * | |
152 | sas_attach_transport(struct sas_function_template *); | |
153 | extern void sas_release_transport(struct scsi_transport_template *); | |
42ab0360 | 154 | int sas_read_port_mode_page(struct scsi_device *); |
c7ebbbce | 155 | |
79cb1819 JB |
156 | static inline int |
157 | scsi_is_sas_expander_device(struct device *dev) | |
158 | { | |
159 | struct sas_rphy *rphy; | |
160 | if (!scsi_is_sas_rphy(dev)) | |
161 | return 0; | |
162 | rphy = dev_to_rphy(dev); | |
163 | return rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE || | |
164 | rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE; | |
165 | } | |
166 | ||
c7ebbbce | 167 | #endif /* SCSI_TRANSPORT_SAS_H */ |