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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> |
5929faf3 | 7 | #include <scsi/sas.h> |
c7ebbbce CH |
8 | |
9 | struct scsi_transport_template; | |
10 | struct sas_rphy; | |
7aa68e80 | 11 | struct request; |
c7ebbbce CH |
12 | |
13 | enum sas_device_type { | |
b98e66fa JB |
14 | SAS_PHY_UNUSED = 0, |
15 | SAS_END_DEVICE = 1, | |
16 | SAS_EDGE_EXPANDER_DEVICE = 2, | |
17 | SAS_FANOUT_EXPANDER_DEVICE = 3, | |
c7ebbbce CH |
18 | }; |
19 | ||
0f05df8b JB |
20 | static inline int sas_protocol_ata(enum sas_protocol proto) |
21 | { | |
22 | return ((proto & SAS_PROTOCOL_SATA) || | |
23 | (proto & SAS_PROTOCOL_STP))? 1 : 0; | |
24 | } | |
25 | ||
c7ebbbce | 26 | enum sas_linkrate { |
88edf746 JB |
27 | /* These Values are defined in the SAS standard */ |
28 | SAS_LINK_RATE_UNKNOWN = 0, | |
29 | SAS_PHY_DISABLED = 1, | |
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 | |
41 | * is only 4 bits */ | |
42 | SAS_LINK_RATE_FAILED = 0x10, | |
43 | SAS_PHY_VIRTUAL = 0x11, | |
c7ebbbce CH |
44 | }; |
45 | ||
46 | struct sas_identify { | |
47 | enum sas_device_type device_type; | |
48 | enum sas_protocol initiator_port_protocols; | |
49 | enum sas_protocol target_port_protocols; | |
50 | u64 sas_address; | |
51 | u8 phy_identifier; | |
52 | }; | |
53 | ||
c7ebbbce CH |
54 | struct sas_phy { |
55 | struct device dev; | |
56 | int number; | |
acbf167d | 57 | int enabled; |
c3ee74c4 CH |
58 | |
59 | /* phy identification */ | |
c7ebbbce | 60 | struct sas_identify identify; |
c3ee74c4 CH |
61 | |
62 | /* phy attributes */ | |
c7ebbbce CH |
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; | |
c3ee74c4 CH |
68 | |
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; | |
74 | ||
65c92b09 JB |
75 | /* for the list of phys belonging to a port */ |
76 | struct list_head port_siblings; | |
dea22214 DW |
77 | |
78 | struct work_struct reset_work; | |
c7ebbbce CH |
79 | }; |
80 | ||
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) | |
87 | ||
b6aff669 | 88 | struct request_queue; |
c7ebbbce CH |
89 | struct sas_rphy { |
90 | struct device dev; | |
91 | struct sas_identify identify; | |
92 | struct list_head list; | |
b6aff669 | 93 | struct request_queue *q; |
c7ebbbce CH |
94 | u32 scsi_target_id; |
95 | }; | |
96 | ||
97 | #define dev_to_rphy(d) \ | |
98 | container_of((d), struct sas_rphy, dev) | |
99 | #define transport_class_to_rphy(cdev) \ | |
100 | dev_to_rphy((cdev)->dev) | |
101 | #define rphy_to_shost(rphy) \ | |
102 | dev_to_shost((rphy)->dev.parent) | |
42ab0360 JB |
103 | #define target_to_rphy(targ) \ |
104 | dev_to_rphy((targ)->dev.parent) | |
105 | ||
106 | struct sas_end_device { | |
107 | struct sas_rphy rphy; | |
108 | /* flags */ | |
109 | unsigned ready_led_meaning:1; | |
110 | /* parameters */ | |
111 | u16 I_T_nexus_loss_timeout; | |
112 | u16 initiator_response_timeout; | |
113 | }; | |
114 | #define rphy_to_end_device(r) \ | |
115 | container_of((r), struct sas_end_device, rphy) | |
c7ebbbce | 116 | |
79cb1819 JB |
117 | struct sas_expander_device { |
118 | int level; | |
c9fefeb2 | 119 | int next_port_id; |
79cb1819 JB |
120 | |
121 | #define SAS_EXPANDER_VENDOR_ID_LEN 8 | |
122 | char vendor_id[SAS_EXPANDER_VENDOR_ID_LEN+1]; | |
123 | #define SAS_EXPANDER_PRODUCT_ID_LEN 16 | |
124 | char product_id[SAS_EXPANDER_PRODUCT_ID_LEN+1]; | |
125 | #define SAS_EXPANDER_PRODUCT_REV_LEN 4 | |
126 | char product_rev[SAS_EXPANDER_PRODUCT_REV_LEN+1]; | |
127 | #define SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN 8 | |
128 | char component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN+1]; | |
129 | u16 component_id; | |
130 | u8 component_revision_id; | |
131 | ||
132 | struct sas_rphy rphy; | |
133 | ||
134 | }; | |
135 | #define rphy_to_expander_device(r) \ | |
136 | container_of((r), struct sas_expander_device, rphy) | |
c3ee74c4 | 137 | |
65c92b09 JB |
138 | struct sas_port { |
139 | struct device dev; | |
140 | ||
c9fefeb2 | 141 | int port_identifier; |
65c92b09 | 142 | int num_phys; |
a0e1b6ef JB |
143 | /* port flags */ |
144 | unsigned int is_backlink:1; | |
65c92b09 JB |
145 | |
146 | /* the other end of the link */ | |
147 | struct sas_rphy *rphy; | |
148 | ||
149 | struct mutex phy_list_mutex; | |
150 | struct list_head phy_list; | |
151 | }; | |
152 | ||
153 | #define dev_to_sas_port(d) \ | |
154 | container_of((d), struct sas_port, dev) | |
155 | #define transport_class_to_sas_port(cdev) \ | |
156 | dev_to_sas_port((cdev)->dev) | |
157 | ||
d24e1eeb JB |
158 | struct sas_phy_linkrates { |
159 | enum sas_linkrate maximum_linkrate; | |
160 | enum sas_linkrate minimum_linkrate; | |
161 | }; | |
162 | ||
c3ee74c4 CH |
163 | /* The functions by which the transport class and the driver communicate */ |
164 | struct sas_function_template { | |
165 | int (*get_linkerrors)(struct sas_phy *); | |
a0125641 CH |
166 | int (*get_enclosure_identifier)(struct sas_rphy *, u64 *); |
167 | int (*get_bay_identifier)(struct sas_rphy *); | |
07ba3a95 | 168 | int (*phy_reset)(struct sas_phy *, int); |
acbf167d | 169 | int (*phy_enable)(struct sas_phy *, int); |
d24e1eeb | 170 | int (*set_phy_speed)(struct sas_phy *, struct sas_phy_linkrates *); |
7aa68e80 | 171 | int (*smp_handler)(struct Scsi_Host *, struct sas_rphy *, struct request *); |
c3ee74c4 CH |
172 | }; |
173 | ||
174 | ||
65c92b09 | 175 | void sas_remove_children(struct device *); |
c7ebbbce CH |
176 | extern void sas_remove_host(struct Scsi_Host *); |
177 | ||
178 | extern struct sas_phy *sas_phy_alloc(struct device *, int); | |
179 | extern void sas_phy_free(struct sas_phy *); | |
180 | extern int sas_phy_add(struct sas_phy *); | |
181 | extern void sas_phy_delete(struct sas_phy *); | |
182 | extern int scsi_is_sas_phy(const struct device *); | |
183 | ||
65c92b09 JB |
184 | extern struct sas_rphy *sas_end_device_alloc(struct sas_port *); |
185 | extern struct sas_rphy *sas_expander_alloc(struct sas_port *, enum sas_device_type); | |
c7ebbbce CH |
186 | void sas_rphy_free(struct sas_rphy *); |
187 | extern int sas_rphy_add(struct sas_rphy *); | |
6f63caae | 188 | extern void sas_rphy_remove(struct sas_rphy *); |
c7ebbbce CH |
189 | extern void sas_rphy_delete(struct sas_rphy *); |
190 | extern int scsi_is_sas_rphy(const struct device *); | |
191 | ||
65c92b09 | 192 | struct sas_port *sas_port_alloc(struct device *, int); |
c9fefeb2 | 193 | struct sas_port *sas_port_alloc_num(struct device *); |
65c92b09 JB |
194 | int sas_port_add(struct sas_port *); |
195 | void sas_port_free(struct sas_port *); | |
196 | void sas_port_delete(struct sas_port *); | |
197 | void sas_port_add_phy(struct sas_port *, struct sas_phy *); | |
198 | void sas_port_delete_phy(struct sas_port *, struct sas_phy *); | |
a0e1b6ef | 199 | void sas_port_mark_backlink(struct sas_port *); |
65c92b09 JB |
200 | int scsi_is_sas_port(const struct device *); |
201 | ||
c7ebbbce CH |
202 | extern struct scsi_transport_template * |
203 | sas_attach_transport(struct sas_function_template *); | |
204 | extern void sas_release_transport(struct scsi_transport_template *); | |
42ab0360 | 205 | int sas_read_port_mode_page(struct scsi_device *); |
c7ebbbce | 206 | |
79cb1819 JB |
207 | static inline int |
208 | scsi_is_sas_expander_device(struct device *dev) | |
209 | { | |
210 | struct sas_rphy *rphy; | |
211 | if (!scsi_is_sas_rphy(dev)) | |
212 | return 0; | |
213 | rphy = dev_to_rphy(dev); | |
214 | return rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE || | |
215 | rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE; | |
216 | } | |
217 | ||
f4ad7b58 JB |
218 | #define scsi_is_sas_phy_local(phy) scsi_is_host_device((phy)->dev.parent) |
219 | ||
c7ebbbce | 220 | #endif /* SCSI_TRANSPORT_SAS_H */ |