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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#include <linux/pm_runtime.h>
18
19#ifdef pr_fmt
20#undef pr_fmt
21#endif
22
23#define SAS_FMT "sas: "
24
25#define pr_fmt(fmt) SAS_FMT fmt
26
27#define TO_SAS_TASK(_scsi_cmd) ((void *)(_scsi_cmd)->host_scribble)
28#define ASSIGN_SAS_TASK(_sc, _t) do { (_sc)->host_scribble = (void *) _t; } while (0)
29
30struct sas_phy_data {
31
32 struct sas_phy *phy;
33 struct mutex event_lock;
34 int hard_reset;
35 int reset_result;
36 struct sas_work reset_work;
37 int enable;
38 int enable_result;
39 struct sas_work enable_work;
40};
41
42void sas_scsi_recover_host(struct Scsi_Host *shost);
43
44int sas_show_class(enum sas_class class, char *buf);
45int sas_show_proto(enum sas_protocol proto, char *buf);
46int sas_show_linkrate(enum sas_linkrate linkrate, char *buf);
47int sas_show_oob_mode(enum sas_oob_mode oob_mode, char *buf);
48
49int sas_register_phys(struct sas_ha_struct *sas_ha);
50void sas_unregister_phys(struct sas_ha_struct *sas_ha);
51
52struct asd_sas_event *sas_alloc_event(struct asd_sas_phy *phy, gfp_t gfp_flags);
53void sas_free_event(struct asd_sas_event *event);
54
55int sas_register_ports(struct sas_ha_struct *sas_ha);
56void sas_unregister_ports(struct sas_ha_struct *sas_ha);
57
58void sas_disable_revalidation(struct sas_ha_struct *ha);
59void sas_enable_revalidation(struct sas_ha_struct *ha);
60void sas_queue_deferred_work(struct sas_ha_struct *ha);
61void __sas_drain_work(struct sas_ha_struct *ha);
62
63void sas_deform_port(struct asd_sas_phy *phy, int gone);
64
65void sas_porte_bytes_dmaed(struct work_struct *work);
66void sas_porte_broadcast_rcvd(struct work_struct *work);
67void sas_porte_link_reset_err(struct work_struct *work);
68void sas_porte_timer_event(struct work_struct *work);
69void sas_porte_hard_reset(struct work_struct *work);
70bool sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw);
71
72int sas_notify_lldd_dev_found(struct domain_device *);
73void sas_notify_lldd_dev_gone(struct domain_device *);
74
75void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
76 struct sas_rphy *rphy);
77int sas_smp_phy_control(struct domain_device *dev, int phy_id,
78 enum phy_func phy_func, struct sas_phy_linkrates *);
79int sas_smp_get_phy_events(struct sas_phy *phy);
80
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
96void sas_task_internal_done(struct sas_task *task);
97void sas_task_internal_timedout(struct timer_list *t);
98int sas_execute_tmf(struct domain_device *device, void *parameter,
99 int para_len, int force_phy_id,
100 struct sas_tmf_task *tmf);
101
102#ifdef CONFIG_SCSI_SAS_HOST_SMP
103extern void sas_smp_host_handler(struct bsg_job *job, struct Scsi_Host *shost);
104#else
105static inline void sas_smp_host_handler(struct bsg_job *job,
106 struct Scsi_Host *shost)
107{
108 shost_printk(KERN_ERR, shost,
109 "Cannot send SMP to a sas host (not enabled in CONFIG)\n");
110 bsg_job_done(job, -EINVAL, 0);
111}
112#endif
113
114static inline void sas_fail_probe(struct domain_device *dev, const char *func, int err)
115{
116 pr_warn("%s: for %s device %016llx returned %d\n",
117 func, dev->parent ? "exp-attached" :
118 "direct-attached",
119 SAS_ADDR(dev->sas_addr), err);
120 sas_unregister_dev(dev->port, dev);
121}
122
123static inline void sas_fill_in_rphy(struct domain_device *dev,
124 struct sas_rphy *rphy)
125{
126 rphy->identify.sas_address = SAS_ADDR(dev->sas_addr);
127 rphy->identify.initiator_port_protocols = dev->iproto;
128 rphy->identify.target_port_protocols = dev->tproto;
129 switch (dev->dev_type) {
130 case SAS_SATA_DEV:
131
132 case SAS_END_DEVICE:
133 case SAS_SATA_PENDING:
134 rphy->identify.device_type = SAS_END_DEVICE;
135 break;
136 case SAS_EDGE_EXPANDER_DEVICE:
137 rphy->identify.device_type = SAS_EDGE_EXPANDER_DEVICE;
138 break;
139 case SAS_FANOUT_EXPANDER_DEVICE:
140 rphy->identify.device_type = SAS_FANOUT_EXPANDER_DEVICE;
141 break;
142 default:
143 rphy->identify.device_type = SAS_PHY_UNUSED;
144 break;
145 }
146}
147
148static inline void sas_phy_set_target(struct asd_sas_phy *p, struct domain_device *dev)
149{
150 struct sas_phy *phy = p->phy;
151
152 if (dev) {
153 if (dev_is_sata(dev))
154 phy->identify.device_type = SAS_END_DEVICE;
155 else
156 phy->identify.device_type = dev->dev_type;
157 phy->identify.target_port_protocols = dev->tproto;
158 } else {
159 phy->identify.device_type = SAS_PHY_UNUSED;
160 phy->identify.target_port_protocols = 0;
161 }
162}
163
164static inline void sas_add_parent_port(struct domain_device *dev, int phy_id)
165{
166 struct expander_device *ex = &dev->ex_dev;
167 struct ex_phy *ex_phy = &ex->ex_phy[phy_id];
168
169 if (!ex->parent_port) {
170 ex->parent_port = sas_port_alloc(&dev->rphy->dev, phy_id);
171
172 BUG_ON(!ex->parent_port);
173 BUG_ON(sas_port_add(ex->parent_port));
174 sas_port_mark_backlink(ex->parent_port);
175 }
176 sas_port_add_phy(ex->parent_port, ex_phy->phy);
177}
178
179static inline struct domain_device *sas_alloc_device(void)
180{
181 struct domain_device *dev = kzalloc(sizeof(*dev), GFP_KERNEL);
182
183 if (dev) {
184 INIT_LIST_HEAD(&dev->siblings);
185 INIT_LIST_HEAD(&dev->dev_list_node);
186 INIT_LIST_HEAD(&dev->disco_list_node);
187 kref_init(&dev->kref);
188 spin_lock_init(&dev->done_lock);
189 }
190 return dev;
191}
192
193static inline void sas_put_device(struct domain_device *dev)
194{
195 kref_put(&dev->kref, sas_free_device);
196}
197
198#endif
199
