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26#ifndef _SAS_INTERNAL_H_
27#define _SAS_INTERNAL_H_
28
29#include <scsi/scsi.h>
30#include <scsi/scsi_host.h>
31#include <scsi/scsi_transport_sas.h>
32#include <scsi/libsas.h>
33#include <scsi/sas_ata.h>
34
35#define sas_printk(fmt, ...) printk(KERN_NOTICE "sas: " fmt, ## __VA_ARGS__)
36
37#define SAS_DPRINTK(fmt, ...) printk(KERN_DEBUG "sas: " fmt, ## __VA_ARGS__)
38
39#define TO_SAS_TASK(_scsi_cmd) ((void *)(_scsi_cmd)->host_scribble)
40#define ASSIGN_SAS_TASK(_sc, _t) do { (_sc)->host_scribble = (void *) _t; } while (0)
41
42struct sas_phy_data {
43
44 struct sas_phy *phy;
45 struct mutex event_lock;
46 int hard_reset;
47 int reset_result;
48 struct sas_work reset_work;
49 int enable;
50 int enable_result;
51 struct sas_work enable_work;
52};
53
54void sas_scsi_recover_host(struct Scsi_Host *shost);
55
56int sas_show_class(enum sas_class class, char *buf);
57int sas_show_proto(enum sas_protocol proto, char *buf);
58int sas_show_linkrate(enum sas_linkrate linkrate, char *buf);
59int sas_show_oob_mode(enum sas_oob_mode oob_mode, char *buf);
60
61int sas_register_phys(struct sas_ha_struct *sas_ha);
62void sas_unregister_phys(struct sas_ha_struct *sas_ha);
63
64int sas_register_ports(struct sas_ha_struct *sas_ha);
65void sas_unregister_ports(struct sas_ha_struct *sas_ha);
66
67enum blk_eh_timer_return sas_scsi_timed_out(struct scsi_cmnd *);
68
69int sas_init_events(struct sas_ha_struct *sas_ha);
70void sas_disable_revalidation(struct sas_ha_struct *ha);
71void sas_enable_revalidation(struct sas_ha_struct *ha);
72void __sas_drain_work(struct sas_ha_struct *ha);
73
74void sas_deform_port(struct asd_sas_phy *phy, int gone);
75
76void sas_porte_bytes_dmaed(struct work_struct *work);
77void sas_porte_broadcast_rcvd(struct work_struct *work);
78void sas_porte_link_reset_err(struct work_struct *work);
79void sas_porte_timer_event(struct work_struct *work);
80void sas_porte_hard_reset(struct work_struct *work);
81void sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw);
82
83int sas_notify_lldd_dev_found(struct domain_device *);
84void sas_notify_lldd_dev_gone(struct domain_device *);
85
86int sas_smp_phy_control(struct domain_device *dev, int phy_id,
87 enum phy_func phy_func, struct sas_phy_linkrates *);
88int sas_smp_get_phy_events(struct sas_phy *phy);
89
90void sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event);
91void sas_device_set_phy(struct domain_device *dev, struct sas_port *port);
92struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy);
93struct domain_device *sas_ex_to_ata(struct domain_device *ex_dev, int phy_id);
94int sas_ex_phy_discover(struct domain_device *dev, int single);
95int sas_get_report_phy_sata(struct domain_device *dev, int phy_id,
96 struct smp_resp *rps_resp);
97int sas_try_ata_reset(struct asd_sas_phy *phy);
98void sas_hae_reset(struct work_struct *work);
99
100void sas_free_device(struct kref *kref);
101void sas_destruct_devices(struct asd_sas_port *port);
102
103#ifdef CONFIG_SCSI_SAS_HOST_SMP
104extern int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
105 struct request *rsp);
106#else
107static inline int sas_smp_host_handler(struct Scsi_Host *shost,
108 struct request *req,
109 struct request *rsp)
110{
111 shost_printk(KERN_ERR, shost,
112 "Cannot send SMP to a sas host (not enabled in CONFIG)\n");
113 return -EINVAL;
114}
115#endif
116
117static inline void sas_fail_probe(struct domain_device *dev, const char *func, int err)
118{
119 SAS_DPRINTK("%s: for %s device %16llx returned %d\n",
120 func, dev->parent ? "exp-attached" :
121 "direct-attached",
122 SAS_ADDR(dev->sas_addr), err);
123 sas_unregister_dev(dev->port, dev);
124}
125
126static inline void sas_fill_in_rphy(struct domain_device *dev,
127 struct sas_rphy *rphy)
128{
129 rphy->identify.sas_address = SAS_ADDR(dev->sas_addr);
130 rphy->identify.initiator_port_protocols = dev->iproto;
131 rphy->identify.target_port_protocols = dev->tproto;
132 switch (dev->dev_type) {
133 case SAS_SATA_DEV:
134
135 case SAS_END_DEVICE:
136 case SAS_SATA_PENDING:
137 rphy->identify.device_type = SAS_END_DEVICE;
138 break;
139 case SAS_EDGE_EXPANDER_DEVICE:
140 rphy->identify.device_type = SAS_EDGE_EXPANDER_DEVICE;
141 break;
142 case SAS_FANOUT_EXPANDER_DEVICE:
143 rphy->identify.device_type = SAS_FANOUT_EXPANDER_DEVICE;
144 break;
145 default:
146 rphy->identify.device_type = SAS_PHY_UNUSED;
147 break;
148 }
149}
150
151static inline void sas_phy_set_target(struct asd_sas_phy *p, struct domain_device *dev)
152{
153 struct sas_phy *phy = p->phy;
154
155 if (dev) {
156 if (dev_is_sata(dev))
157 phy->identify.device_type = SAS_END_DEVICE;
158 else
159 phy->identify.device_type = dev->dev_type;
160 phy->identify.target_port_protocols = dev->tproto;
161 } else {
162 phy->identify.device_type = SAS_PHY_UNUSED;
163 phy->identify.target_port_protocols = 0;
164 }
165}
166
167static inline void sas_add_parent_port(struct domain_device *dev, int phy_id)
168{
169 struct expander_device *ex = &dev->ex_dev;
170 struct ex_phy *ex_phy = &ex->ex_phy[phy_id];
171
172 if (!ex->parent_port) {
173 ex->parent_port = sas_port_alloc(&dev->rphy->dev, phy_id);
174
175 BUG_ON(!ex->parent_port);
176 BUG_ON(sas_port_add(ex->parent_port));
177 sas_port_mark_backlink(ex->parent_port);
178 }
179 sas_port_add_phy(ex->parent_port, ex_phy->phy);
180}
181
182static inline struct domain_device *sas_alloc_device(void)
183{
184 struct domain_device *dev = kzalloc(sizeof(*dev), GFP_KERNEL);
185
186 if (dev) {
187 INIT_LIST_HEAD(&dev->siblings);
188 INIT_LIST_HEAD(&dev->dev_list_node);
189 INIT_LIST_HEAD(&dev->disco_list_node);
190 kref_init(&dev->kref);
191 spin_lock_init(&dev->done_lock);
192 }
193 return dev;
194}
195
196static inline void sas_put_device(struct domain_device *dev)
197{
198 kref_put(&dev->kref, sas_free_device);
199}
200
201#endif
202
