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android-review.linaro.org / kernel / hikey-linaro / 07ba3a954714da10cbd3f6249d93ac2c1df72c4f / . / include / scsi / scsi_transport_sas.h
blob: b91400bfb02a430fc1c0186ac2281237f36860b1 [file] [log] [blame]
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200[diff] [blame]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
7struct scsi_transport_template;
8struct sas_rphy;
9
10
11enum sas_device_type {
12 SAS_PHY_UNUSED,
13 SAS_END_DEVICE,
14 SAS_EDGE_EXPANDER_DEVICE,
15 SAS_FANOUT_EXPANDER_DEVICE,
16};
17
18enum sas_protocol {
19 SAS_PROTOCOL_SATA = 0x01,
20 SAS_PROTOCOL_SMP = 0x02,
21 SAS_PROTOCOL_STP = 0x04,
22 SAS_PROTOCOL_SSP = 0x08,
23};
24
25enum 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,
33 SAS_LINK_VIRTUAL,
34};
35
36struct sas_identify {
37 enum sas_device_type device_type;
38 enum sas_protocol initiator_port_protocols;
39 enum sas_protocol target_port_protocols;
40 u64 sas_address;
41 u8 phy_identifier;
42};
43
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200[diff] [blame]44struct sas_phy {
45 struct device dev;
46 int number;
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200[diff] [blame]47
48 /* phy identification */
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200[diff] [blame]49 struct sas_identify identify;
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200[diff] [blame]50
51 /* phy attributes */
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200[diff] [blame]52 enum sas_linkrate negotiated_linkrate;
53 enum sas_linkrate minimum_linkrate_hw;
54 enum sas_linkrate minimum_linkrate;
55 enum sas_linkrate maximum_linkrate_hw;
56 enum sas_linkrate maximum_linkrate;
57 u8 port_identifier;
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200[diff] [blame]58
Christoph Hellwigac01bbb2005-10-19 20:01:17 +0200[diff] [blame]59 /* internal state */
60 unsigned int local_attached : 1;
61
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200[diff] [blame]62 /* link error statistics */
63 u32 invalid_dword_count;
64 u32 running_disparity_error_count;
65 u32 loss_of_dword_sync_count;
66 u32 phy_reset_problem_count;
67
68 /* the other end of the link */
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200[diff] [blame]69 struct sas_rphy *rphy;
70};
71
72#define dev_to_phy(d) \
73 container_of((d), struct sas_phy, dev)
74#define transport_class_to_phy(cdev) \
75 dev_to_phy((cdev)->dev)
76#define phy_to_shost(phy) \
77 dev_to_shost((phy)->dev.parent)
78
79struct sas_rphy {
80 struct device dev;
81 struct sas_identify identify;
82 struct list_head list;
83 u32 scsi_target_id;
84};
85
86#define dev_to_rphy(d) \
87 container_of((d), struct sas_rphy, dev)
88#define transport_class_to_rphy(cdev) \
89 dev_to_rphy((cdev)->dev)
90#define rphy_to_shost(rphy) \
91 dev_to_shost((rphy)->dev.parent)
92
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200[diff] [blame]93
94/* The functions by which the transport class and the driver communicate */
95struct sas_function_template {
96 int (*get_linkerrors)(struct sas_phy *);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200[diff] [blame^]97 int (*phy_reset)(struct sas_phy *, int);
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200[diff] [blame]98};
99
100
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200[diff] [blame]101extern void sas_remove_host(struct Scsi_Host *);
102
103extern struct sas_phy *sas_phy_alloc(struct device *, int);
104extern void sas_phy_free(struct sas_phy *);
105extern int sas_phy_add(struct sas_phy *);
106extern void sas_phy_delete(struct sas_phy *);
107extern int scsi_is_sas_phy(const struct device *);
108
109extern struct sas_rphy *sas_rphy_alloc(struct sas_phy *);
110void sas_rphy_free(struct sas_rphy *);
111extern int sas_rphy_add(struct sas_rphy *);
112extern void sas_rphy_delete(struct sas_rphy *);
113extern int scsi_is_sas_rphy(const struct device *);
114
115extern struct scsi_transport_template *
116sas_attach_transport(struct sas_function_template *);
117extern void sas_release_transport(struct scsi_transport_template *);
118
119#endif /* SCSI_TRANSPORT_SAS_H */