This source file includes following definitions.
- sas_smp_host_handler
- sas_fail_probe
- sas_fill_in_rphy
- sas_phy_set_target
- sas_add_parent_port
- sas_alloc_device
- sas_put_device
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9 #ifndef _SAS_INTERNAL_H_
10 #define _SAS_INTERNAL_H_
11
12 #include <scsi/scsi.h>
13 #include <scsi/scsi_host.h>
14 #include <scsi/scsi_transport_sas.h>
15 #include <scsi/libsas.h>
16 #include <scsi/sas_ata.h>
17
18 #ifdef pr_fmt
19 #undef pr_fmt
20 #endif
21
22 #define SAS_FMT "sas: "
23
24 #define pr_fmt(fmt) SAS_FMT fmt
25
26 #define TO_SAS_TASK(_scsi_cmd) ((void *)(_scsi_cmd)->host_scribble)
27 #define ASSIGN_SAS_TASK(_sc, _t) do { (_sc)->host_scribble = (void *) _t; } while (0)
28
29 struct sas_phy_data {
30
31 struct sas_phy *phy;
32 struct mutex event_lock;
33 int hard_reset;
34 int reset_result;
35 struct sas_work reset_work;
36 int enable;
37 int enable_result;
38 struct sas_work enable_work;
39 };
40
41 void sas_scsi_recover_host(struct Scsi_Host *shost);
42
43 int sas_show_class(enum sas_class class, char *buf);
44 int sas_show_proto(enum sas_protocol proto, char *buf);
45 int sas_show_linkrate(enum sas_linkrate linkrate, char *buf);
46 int sas_show_oob_mode(enum sas_oob_mode oob_mode, char *buf);
47
48 int sas_register_phys(struct sas_ha_struct *sas_ha);
49 void sas_unregister_phys(struct sas_ha_struct *sas_ha);
50
51 struct asd_sas_event *sas_alloc_event(struct asd_sas_phy *phy);
52 void sas_free_event(struct asd_sas_event *event);
53
54 int sas_register_ports(struct sas_ha_struct *sas_ha);
55 void sas_unregister_ports(struct sas_ha_struct *sas_ha);
56
57 int sas_init_events(struct sas_ha_struct *sas_ha);
58 void sas_disable_revalidation(struct sas_ha_struct *ha);
59 void sas_enable_revalidation(struct sas_ha_struct *ha);
60 void __sas_drain_work(struct sas_ha_struct *ha);
61
62 void sas_deform_port(struct asd_sas_phy *phy, int gone);
63
64 void sas_porte_bytes_dmaed(struct work_struct *work);
65 void sas_porte_broadcast_rcvd(struct work_struct *work);
66 void sas_porte_link_reset_err(struct work_struct *work);
67 void sas_porte_timer_event(struct work_struct *work);
68 void sas_porte_hard_reset(struct work_struct *work);
69 int sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw);
70
71 int sas_notify_lldd_dev_found(struct domain_device *);
72 void sas_notify_lldd_dev_gone(struct domain_device *);
73
74 void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
75 struct sas_rphy *rphy);
76 int sas_smp_phy_control(struct domain_device *dev, int phy_id,
77 enum phy_func phy_func, struct sas_phy_linkrates *);
78 int sas_smp_get_phy_events(struct sas_phy *phy);
79
80 int sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event);
81 void sas_device_set_phy(struct domain_device *dev, struct sas_port *port);
82 struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy);
83 struct domain_device *sas_ex_to_ata(struct domain_device *ex_dev, int phy_id);
84 int sas_ex_phy_discover(struct domain_device *dev, int single);
85 int sas_get_report_phy_sata(struct domain_device *dev, int phy_id,
86 struct smp_resp *rps_resp);
87 int sas_try_ata_reset(struct asd_sas_phy *phy);
88 void sas_hae_reset(struct work_struct *work);
89
90 void sas_free_device(struct kref *kref);
91 void sas_destruct_devices(struct asd_sas_port *port);
92
93 extern const work_func_t sas_phy_event_fns[PHY_NUM_EVENTS];
94 extern const work_func_t sas_port_event_fns[PORT_NUM_EVENTS];
95
96 #ifdef CONFIG_SCSI_SAS_HOST_SMP
97 extern void sas_smp_host_handler(struct bsg_job *job, struct Scsi_Host *shost);
98 #else
99 static inline void sas_smp_host_handler(struct bsg_job *job,
100 struct Scsi_Host *shost)
101 {
102 shost_printk(KERN_ERR, shost,
103 "Cannot send SMP to a sas host (not enabled in CONFIG)\n");
104 bsg_job_done(job, -EINVAL, 0);
105 }
106 #endif
107
108 static inline void sas_fail_probe(struct domain_device *dev, const char *func, int err)
109 {
110 pr_warn("%s: for %s device %16llx returned %d\n",
111 func, dev->parent ? "exp-attached" :
112 "direct-attached",
113 SAS_ADDR(dev->sas_addr), err);
114 sas_unregister_dev(dev->port, dev);
115 }
116
117 static inline void sas_fill_in_rphy(struct domain_device *dev,
118 struct sas_rphy *rphy)
119 {
120 rphy->identify.sas_address = SAS_ADDR(dev->sas_addr);
121 rphy->identify.initiator_port_protocols = dev->iproto;
122 rphy->identify.target_port_protocols = dev->tproto;
123 switch (dev->dev_type) {
124 case SAS_SATA_DEV:
125
126 case SAS_END_DEVICE:
127 case SAS_SATA_PENDING:
128 rphy->identify.device_type = SAS_END_DEVICE;
129 break;
130 case SAS_EDGE_EXPANDER_DEVICE:
131 rphy->identify.device_type = SAS_EDGE_EXPANDER_DEVICE;
132 break;
133 case SAS_FANOUT_EXPANDER_DEVICE:
134 rphy->identify.device_type = SAS_FANOUT_EXPANDER_DEVICE;
135 break;
136 default:
137 rphy->identify.device_type = SAS_PHY_UNUSED;
138 break;
139 }
140 }
141
142 static inline void sas_phy_set_target(struct asd_sas_phy *p, struct domain_device *dev)
143 {
144 struct sas_phy *phy = p->phy;
145
146 if (dev) {
147 if (dev_is_sata(dev))
148 phy->identify.device_type = SAS_END_DEVICE;
149 else
150 phy->identify.device_type = dev->dev_type;
151 phy->identify.target_port_protocols = dev->tproto;
152 } else {
153 phy->identify.device_type = SAS_PHY_UNUSED;
154 phy->identify.target_port_protocols = 0;
155 }
156 }
157
158 static inline void sas_add_parent_port(struct domain_device *dev, int phy_id)
159 {
160 struct expander_device *ex = &dev->ex_dev;
161 struct ex_phy *ex_phy = &ex->ex_phy[phy_id];
162
163 if (!ex->parent_port) {
164 ex->parent_port = sas_port_alloc(&dev->rphy->dev, phy_id);
165
166 BUG_ON(!ex->parent_port);
167 BUG_ON(sas_port_add(ex->parent_port));
168 sas_port_mark_backlink(ex->parent_port);
169 }
170 sas_port_add_phy(ex->parent_port, ex_phy->phy);
171 }
172
173 static inline struct domain_device *sas_alloc_device(void)
174 {
175 struct domain_device *dev = kzalloc(sizeof(*dev), GFP_KERNEL);
176
177 if (dev) {
178 INIT_LIST_HEAD(&dev->siblings);
179 INIT_LIST_HEAD(&dev->dev_list_node);
180 INIT_LIST_HEAD(&dev->disco_list_node);
181 kref_init(&dev->kref);
182 spin_lock_init(&dev->done_lock);
183 }
184 return dev;
185 }
186
187 static inline void sas_put_device(struct domain_device *dev)
188 {
189 kref_put(&dev->kref, sas_free_device);
190 }
191
192 #endif