[SCSI] SAS transport class
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / scsi / scsi_transport_sas.h
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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
44/* The functions by which the transport class and the driver communicate */
45struct sas_function_template {
46};
47
48struct sas_phy {
49 struct device dev;
50 int number;
51 struct sas_identify identify;
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;
58 struct sas_rphy *rphy;
59};
60
61#define dev_to_phy(d) \
62 container_of((d), struct sas_phy, dev)
63#define transport_class_to_phy(cdev) \
64 dev_to_phy((cdev)->dev)
65#define phy_to_shost(phy) \
66 dev_to_shost((phy)->dev.parent)
67
68struct sas_rphy {
69 struct device dev;
70 struct sas_identify identify;
71 struct list_head list;
72 u32 scsi_target_id;
73};
74
75#define dev_to_rphy(d) \
76 container_of((d), struct sas_rphy, dev)
77#define transport_class_to_rphy(cdev) \
78 dev_to_rphy((cdev)->dev)
79#define rphy_to_shost(rphy) \
80 dev_to_shost((rphy)->dev.parent)
81
82extern void sas_remove_host(struct Scsi_Host *);
83
84extern struct sas_phy *sas_phy_alloc(struct device *, int);
85extern void sas_phy_free(struct sas_phy *);
86extern int sas_phy_add(struct sas_phy *);
87extern void sas_phy_delete(struct sas_phy *);
88extern int scsi_is_sas_phy(const struct device *);
89
90extern struct sas_rphy *sas_rphy_alloc(struct sas_phy *);
91void sas_rphy_free(struct sas_rphy *);
92extern int sas_rphy_add(struct sas_rphy *);
93extern void sas_rphy_delete(struct sas_rphy *);
94extern int scsi_is_sas_rphy(const struct device *);
95
96extern struct scsi_transport_template *
97sas_attach_transport(struct sas_function_template *);
98extern void sas_release_transport(struct scsi_transport_template *);
99
100#endif /* SCSI_TRANSPORT_SAS_H */