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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; | |
7aa68e80 | 10 | struct request; |
c7ebbbce CH |
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 | ||
0f05df8b JB |
26 | static inline int sas_protocol_ata(enum sas_protocol proto) |
27 | { | |
28 | return ((proto & SAS_PROTOCOL_SATA) || | |
29 | (proto & SAS_PROTOCOL_STP))? 1 : 0; | |
30 | } | |
31 | ||
c7ebbbce | 32 | enum sas_linkrate { |
88edf746 JB |
33 | /* These Values are defined in the SAS standard */ |
34 | SAS_LINK_RATE_UNKNOWN = 0, | |
35 | SAS_PHY_DISABLED = 1, | |
36 | SAS_PHY_RESET_PROBLEM = 2, | |
37 | SAS_SATA_SPINUP_HOLD = 3, | |
38 | SAS_SATA_PORT_SELECTOR = 4, | |
39 | SAS_PHY_RESET_IN_PROGRESS = 5, | |
40 | SAS_LINK_RATE_1_5_GBPS = 8, | |
41 | SAS_LINK_RATE_G1 = SAS_LINK_RATE_1_5_GBPS, | |
42 | SAS_LINK_RATE_3_0_GBPS = 9, | |
43 | SAS_LINK_RATE_G2 = SAS_LINK_RATE_3_0_GBPS, | |
44 | SAS_LINK_RATE_6_0_GBPS = 10, | |
45 | /* These are virtual to the transport class and may never | |
46 | * be signalled normally since the standard defined field | |
47 | * is only 4 bits */ | |
48 | SAS_LINK_RATE_FAILED = 0x10, | |
49 | SAS_PHY_VIRTUAL = 0x11, | |
c7ebbbce CH |
50 | }; |
51 | ||
52 | struct sas_identify { | |
53 | enum sas_device_type device_type; | |
54 | enum sas_protocol initiator_port_protocols; | |
55 | enum sas_protocol target_port_protocols; | |
56 | u64 sas_address; | |
57 | u8 phy_identifier; | |
58 | }; | |
59 | ||
c7ebbbce CH |
60 | struct sas_phy { |
61 | struct device dev; | |
62 | int number; | |
acbf167d | 63 | int enabled; |
c3ee74c4 CH |
64 | |
65 | /* phy identification */ | |
c7ebbbce | 66 | struct sas_identify identify; |
c3ee74c4 CH |
67 | |
68 | /* phy attributes */ | |
c7ebbbce CH |
69 | enum sas_linkrate negotiated_linkrate; |
70 | enum sas_linkrate minimum_linkrate_hw; | |
71 | enum sas_linkrate minimum_linkrate; | |
72 | enum sas_linkrate maximum_linkrate_hw; | |
73 | enum sas_linkrate maximum_linkrate; | |
c3ee74c4 CH |
74 | |
75 | /* link error statistics */ | |
76 | u32 invalid_dword_count; | |
77 | u32 running_disparity_error_count; | |
78 | u32 loss_of_dword_sync_count; | |
79 | u32 phy_reset_problem_count; | |
80 | ||
65c92b09 JB |
81 | /* for the list of phys belonging to a port */ |
82 | struct list_head port_siblings; | |
dea22214 DW |
83 | |
84 | struct work_struct reset_work; | |
c7ebbbce CH |
85 | }; |
86 | ||
87 | #define dev_to_phy(d) \ | |
88 | container_of((d), struct sas_phy, dev) | |
89 | #define transport_class_to_phy(cdev) \ | |
90 | dev_to_phy((cdev)->dev) | |
91 | #define phy_to_shost(phy) \ | |
92 | dev_to_shost((phy)->dev.parent) | |
93 | ||
b6aff669 | 94 | struct request_queue; |
c7ebbbce CH |
95 | struct sas_rphy { |
96 | struct device dev; | |
97 | struct sas_identify identify; | |
98 | struct list_head list; | |
b6aff669 | 99 | struct request_queue *q; |
c7ebbbce CH |
100 | u32 scsi_target_id; |
101 | }; | |
102 | ||
103 | #define dev_to_rphy(d) \ | |
104 | container_of((d), struct sas_rphy, dev) | |
105 | #define transport_class_to_rphy(cdev) \ | |
106 | dev_to_rphy((cdev)->dev) | |
107 | #define rphy_to_shost(rphy) \ | |
108 | dev_to_shost((rphy)->dev.parent) | |
42ab0360 JB |
109 | #define target_to_rphy(targ) \ |
110 | dev_to_rphy((targ)->dev.parent) | |
111 | ||
112 | struct sas_end_device { | |
113 | struct sas_rphy rphy; | |
114 | /* flags */ | |
115 | unsigned ready_led_meaning:1; | |
116 | /* parameters */ | |
117 | u16 I_T_nexus_loss_timeout; | |
118 | u16 initiator_response_timeout; | |
119 | }; | |
120 | #define rphy_to_end_device(r) \ | |
121 | container_of((r), struct sas_end_device, rphy) | |
c7ebbbce | 122 | |
79cb1819 JB |
123 | struct sas_expander_device { |
124 | int level; | |
c9fefeb2 | 125 | int next_port_id; |
79cb1819 JB |
126 | |
127 | #define SAS_EXPANDER_VENDOR_ID_LEN 8 | |
128 | char vendor_id[SAS_EXPANDER_VENDOR_ID_LEN+1]; | |
129 | #define SAS_EXPANDER_PRODUCT_ID_LEN 16 | |
130 | char product_id[SAS_EXPANDER_PRODUCT_ID_LEN+1]; | |
131 | #define SAS_EXPANDER_PRODUCT_REV_LEN 4 | |
132 | char product_rev[SAS_EXPANDER_PRODUCT_REV_LEN+1]; | |
133 | #define SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN 8 | |
134 | char component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN+1]; | |
135 | u16 component_id; | |
136 | u8 component_revision_id; | |
137 | ||
138 | struct sas_rphy rphy; | |
139 | ||
140 | }; | |
141 | #define rphy_to_expander_device(r) \ | |
142 | container_of((r), struct sas_expander_device, rphy) | |
c3ee74c4 | 143 | |
65c92b09 JB |
144 | struct sas_port { |
145 | struct device dev; | |
146 | ||
c9fefeb2 | 147 | int port_identifier; |
65c92b09 | 148 | int num_phys; |
a0e1b6ef JB |
149 | /* port flags */ |
150 | unsigned int is_backlink:1; | |
65c92b09 JB |
151 | |
152 | /* the other end of the link */ | |
153 | struct sas_rphy *rphy; | |
154 | ||
155 | struct mutex phy_list_mutex; | |
156 | struct list_head phy_list; | |
157 | }; | |
158 | ||
159 | #define dev_to_sas_port(d) \ | |
160 | container_of((d), struct sas_port, dev) | |
161 | #define transport_class_to_sas_port(cdev) \ | |
162 | dev_to_sas_port((cdev)->dev) | |
163 | ||
d24e1eeb JB |
164 | struct sas_phy_linkrates { |
165 | enum sas_linkrate maximum_linkrate; | |
166 | enum sas_linkrate minimum_linkrate; | |
167 | }; | |
168 | ||
c3ee74c4 CH |
169 | /* The functions by which the transport class and the driver communicate */ |
170 | struct sas_function_template { | |
171 | int (*get_linkerrors)(struct sas_phy *); | |
a0125641 CH |
172 | int (*get_enclosure_identifier)(struct sas_rphy *, u64 *); |
173 | int (*get_bay_identifier)(struct sas_rphy *); | |
07ba3a95 | 174 | int (*phy_reset)(struct sas_phy *, int); |
acbf167d | 175 | int (*phy_enable)(struct sas_phy *, int); |
d24e1eeb | 176 | int (*set_phy_speed)(struct sas_phy *, struct sas_phy_linkrates *); |
7aa68e80 | 177 | int (*smp_handler)(struct Scsi_Host *, struct sas_rphy *, struct request *); |
c3ee74c4 CH |
178 | }; |
179 | ||
180 | ||
65c92b09 | 181 | void sas_remove_children(struct device *); |
c7ebbbce CH |
182 | extern void sas_remove_host(struct Scsi_Host *); |
183 | ||
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 *); | |
189 | ||
65c92b09 JB |
190 | extern struct sas_rphy *sas_end_device_alloc(struct sas_port *); |
191 | extern struct sas_rphy *sas_expander_alloc(struct sas_port *, enum sas_device_type); | |
c7ebbbce CH |
192 | void sas_rphy_free(struct sas_rphy *); |
193 | extern int sas_rphy_add(struct sas_rphy *); | |
6f63caae | 194 | extern void sas_rphy_remove(struct sas_rphy *); |
c7ebbbce CH |
195 | extern void sas_rphy_delete(struct sas_rphy *); |
196 | extern int scsi_is_sas_rphy(const struct device *); | |
197 | ||
65c92b09 | 198 | struct sas_port *sas_port_alloc(struct device *, int); |
c9fefeb2 | 199 | struct sas_port *sas_port_alloc_num(struct device *); |
65c92b09 JB |
200 | int sas_port_add(struct sas_port *); |
201 | void sas_port_free(struct sas_port *); | |
202 | void sas_port_delete(struct sas_port *); | |
203 | void sas_port_add_phy(struct sas_port *, struct sas_phy *); | |
204 | void sas_port_delete_phy(struct sas_port *, struct sas_phy *); | |
a0e1b6ef | 205 | void sas_port_mark_backlink(struct sas_port *); |
65c92b09 JB |
206 | int scsi_is_sas_port(const struct device *); |
207 | ||
c7ebbbce CH |
208 | extern struct scsi_transport_template * |
209 | sas_attach_transport(struct sas_function_template *); | |
210 | extern void sas_release_transport(struct scsi_transport_template *); | |
42ab0360 | 211 | int sas_read_port_mode_page(struct scsi_device *); |
c7ebbbce | 212 | |
79cb1819 JB |
213 | static inline int |
214 | scsi_is_sas_expander_device(struct device *dev) | |
215 | { | |
216 | struct sas_rphy *rphy; | |
217 | if (!scsi_is_sas_rphy(dev)) | |
218 | return 0; | |
219 | rphy = dev_to_rphy(dev); | |
220 | return rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE || | |
221 | rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE; | |
222 | } | |
223 | ||
f4ad7b58 JB |
224 | #define scsi_is_sas_phy_local(phy) scsi_is_host_device((phy)->dev.parent) |
225 | ||
c7ebbbce | 226 | #endif /* SCSI_TRANSPORT_SAS_H */ |