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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
29struct 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
41void sas_scsi_recover_host(struct Scsi_Host *shost);
42
43int sas_show_class(enum sas_class class, char *buf);
44int sas_show_proto(enum sas_protocol proto, char *buf);
45int sas_show_linkrate(enum sas_linkrate linkrate, char *buf);
46int sas_show_oob_mode(enum sas_oob_mode oob_mode, char *buf);
47
48int sas_register_phys(struct sas_ha_struct *sas_ha);
49void sas_unregister_phys(struct sas_ha_struct *sas_ha);
50
51struct asd_sas_event *sas_alloc_event(struct asd_sas_phy *phy, gfp_t gfp_flags);
52void sas_free_event(struct asd_sas_event *event);
53
54int sas_register_ports(struct sas_ha_struct *sas_ha);
55void sas_unregister_ports(struct sas_ha_struct *sas_ha);
56
57void sas_disable_revalidation(struct sas_ha_struct *ha);
58void sas_enable_revalidation(struct sas_ha_struct *ha);
59void __sas_drain_work(struct sas_ha_struct *ha);
60
61void sas_deform_port(struct asd_sas_phy *phy, int gone);
62
63void sas_porte_bytes_dmaed(struct work_struct *work);
64void sas_porte_broadcast_rcvd(struct work_struct *work);
65void sas_porte_link_reset_err(struct work_struct *work);
66void sas_porte_timer_event(struct work_struct *work);
67void sas_porte_hard_reset(struct work_struct *work);
68int sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw);
69
70int sas_notify_lldd_dev_found(struct domain_device *);
71void sas_notify_lldd_dev_gone(struct domain_device *);
72
73void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
74 struct sas_rphy *rphy);
75int sas_smp_phy_control(struct domain_device *dev, int phy_id,
76 enum phy_func phy_func, struct sas_phy_linkrates *);
77int sas_smp_get_phy_events(struct sas_phy *phy);
78
79int sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event,
80 gfp_t flags);
81void sas_device_set_phy(struct domain_device *dev, struct sas_port *port);
82struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy);
83struct domain_device *sas_ex_to_ata(struct domain_device *ex_dev, int phy_id);
84int sas_ex_phy_discover(struct domain_device *dev, int single);
85int sas_get_report_phy_sata(struct domain_device *dev, int phy_id,
86 struct smp_resp *rps_resp);
87int sas_try_ata_reset(struct asd_sas_phy *phy);
88void sas_hae_reset(struct work_struct *work);
89
90void sas_free_device(struct kref *kref);
91void sas_destruct_devices(struct asd_sas_port *port);
92
93extern const work_func_t sas_phy_event_fns[PHY_NUM_EVENTS];
94extern const work_func_t sas_port_event_fns[PORT_NUM_EVENTS];
95
96#ifdef CONFIG_SCSI_SAS_HOST_SMP
97extern void sas_smp_host_handler(struct bsg_job *job, struct Scsi_Host *shost);
98#else
99static 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
108static inline void sas_fail_probe(struct domain_device *dev, const char *func, int err)
109{
110 pr_warn("%s: for %s device %016llx 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
117static 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
142static 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
158static 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
173static 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
187static inline void sas_put_device(struct domain_device *dev)
188{
189 kref_put(&dev->kref, sas_free_device);
190}
191
192#endif
193
