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#include <linux/mutex.h>
7#include <scsi/sas.h>
8
9struct scsi_transport_template;
10struct sas_rphy;
11struct request;
12
13enum sas_device_type {
14 SAS_PHY_UNUSED = 0,
15 SAS_END_DEVICE = 1,
16 SAS_EDGE_EXPANDER_DEVICE = 2,
17 SAS_FANOUT_EXPANDER_DEVICE = 3,
18};
19
20static 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
26enum sas_linkrate {
27
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
40
41
42 SAS_LINK_RATE_FAILED = 0x10,
43 SAS_PHY_VIRTUAL = 0x11,
44};
45
46struct 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
54struct sas_phy {
55 struct device dev;
56 int number;
57 int enabled;
58
59
60 struct sas_identify identify;
61
62
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;
68
69
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
75
76 struct list_head port_siblings;
77
78 struct work_struct reset_work;
79};
80
81#define dev_to_phy(d) \
82 container_of((d), struct sas_phy, dev)
83#define transport_class_to_phy(dev) \
84 dev_to_phy((dev)->parent)
85#define phy_to_shost(phy) \
86 dev_to_shost((phy)->dev.parent)
87
88struct request_queue;
89struct sas_rphy {
90 struct device dev;
91 struct sas_identify identify;
92 struct list_head list;
93 struct request_queue *q;
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(dev) \
100 dev_to_rphy((dev)->parent)
101#define rphy_to_shost(rphy) \
102 dev_to_shost((rphy)->dev.parent)
103#define target_to_rphy(targ) \
104 dev_to_rphy((targ)->dev.parent)
105
106struct sas_end_device {
107 struct sas_rphy rphy;
108
109 unsigned ready_led_meaning:1;
110
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)
116
117struct sas_expander_device {
118 int level;
119 int next_port_id;
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)
137
138struct sas_port {
139 struct device dev;
140
141 int port_identifier;
142 int num_phys;
143
144 unsigned int is_backlink:1;
145
146
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(dev) \
156 dev_to_sas_port((dev)->parent)
157
158struct sas_phy_linkrates {
159 enum sas_linkrate maximum_linkrate;
160 enum sas_linkrate minimum_linkrate;
161};
162
163
164struct sas_function_template {
165 int (*get_linkerrors)(struct sas_phy *);
166 int (*get_enclosure_identifier)(struct sas_rphy *, u64 *);
167 int (*get_bay_identifier)(struct sas_rphy *);
168 int (*phy_reset)(struct sas_phy *, int);
169 int (*phy_enable)(struct sas_phy *, int);
170 int (*set_phy_speed)(struct sas_phy *, struct sas_phy_linkrates *);
171 int (*smp_handler)(struct Scsi_Host *, struct sas_rphy *, struct request *);
172};
173
174
175void sas_remove_children(struct device *);
176extern void sas_remove_host(struct Scsi_Host *);
177
178extern struct sas_phy *sas_phy_alloc(struct device *, int);
179extern void sas_phy_free(struct sas_phy *);
180extern int sas_phy_add(struct sas_phy *);
181extern void sas_phy_delete(struct sas_phy *);
182extern int scsi_is_sas_phy(const struct device *);
183
184extern struct sas_rphy *sas_end_device_alloc(struct sas_port *);
185extern struct sas_rphy *sas_expander_alloc(struct sas_port *, enum sas_device_type);
186void sas_rphy_free(struct sas_rphy *);
187extern int sas_rphy_add(struct sas_rphy *);
188extern void sas_rphy_remove(struct sas_rphy *);
189extern void sas_rphy_delete(struct sas_rphy *);
190extern int scsi_is_sas_rphy(const struct device *);
191
192struct sas_port *sas_port_alloc(struct device *, int);
193struct sas_port *sas_port_alloc_num(struct device *);
194int sas_port_add(struct sas_port *);
195void sas_port_free(struct sas_port *);
196void sas_port_delete(struct sas_port *);
197void sas_port_add_phy(struct sas_port *, struct sas_phy *);
198void sas_port_delete_phy(struct sas_port *, struct sas_phy *);
199void sas_port_mark_backlink(struct sas_port *);
200int scsi_is_sas_port(const struct device *);
201
202extern struct scsi_transport_template *
203sas_attach_transport(struct sas_function_template *);
204extern void sas_release_transport(struct scsi_transport_template *);
205int sas_read_port_mode_page(struct scsi_device *);
206
207static inline int
208scsi_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
218#define scsi_is_sas_phy_local(phy) scsi_is_host_device((phy)->dev.parent)
219
220#endif
221
