1 /*
2 * Serial Attached SCSI (SAS) class internal header file
3 *
4 * Copyright (C) 2005 Adaptec, Inc. All rights reserved.
5 * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
6 *
7 * This file is licensed under GPLv2.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of the
12 * License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
22 * USA
23 *
24 */
25
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
34 #define sas_printk(fmt, ...) printk(KERN_NOTICE "sas: " fmt, ## __VA_ARGS__)
35
36 #ifdef SAS_DEBUG
37 #define SAS_DPRINTK(fmt, ...) printk(KERN_NOTICE "sas: " fmt, ## __VA_ARGS__)
38 #else
39 #define SAS_DPRINTK(fmt, ...)
40 #endif
41
42 #define TO_SAS_TASK(_scsi_cmd) ((void *)(_scsi_cmd)->host_scribble)
43 #define ASSIGN_SAS_TASK(_sc, _t) do { (_sc)->host_scribble = (void *) _t; } while (0)
44
45 void sas_scsi_recover_host(struct Scsi_Host *shost);
46
47 int sas_show_class(enum sas_class class, char *buf);
48 int sas_show_proto(enum sas_protocol proto, char *buf);
49 int sas_show_linkrate(enum sas_linkrate linkrate, char *buf);
50 int sas_show_oob_mode(enum sas_oob_mode oob_mode, char *buf);
51
52 int sas_register_phys(struct sas_ha_struct *sas_ha);
53 void sas_unregister_phys(struct sas_ha_struct *sas_ha);
54
55 int sas_register_ports(struct sas_ha_struct *sas_ha);
56 void sas_unregister_ports(struct sas_ha_struct *sas_ha);
57
58 enum blk_eh_timer_return sas_scsi_timed_out(struct scsi_cmnd *);
59
60 int sas_init_queue(struct sas_ha_struct *sas_ha);
61 int sas_init_events(struct sas_ha_struct *sas_ha);
62 void sas_shutdown_queue(struct sas_ha_struct *sas_ha);
63
64 void sas_deform_port(struct asd_sas_phy *phy);
65
66 void sas_porte_bytes_dmaed(struct work_struct *work);
67 void sas_porte_broadcast_rcvd(struct work_struct *work);
68 void sas_porte_link_reset_err(struct work_struct *work);
69 void sas_porte_timer_event(struct work_struct *work);
70 void sas_porte_hard_reset(struct work_struct *work);
71
72 int sas_notify_lldd_dev_found(struct domain_device *);
73 void sas_notify_lldd_dev_gone(struct domain_device *);
74
75 int sas_smp_phy_control(struct domain_device *dev, int phy_id,
76 enum phy_func phy_func, struct sas_phy_linkrates *);
77 int sas_smp_get_phy_events(struct sas_phy *phy);
78
79 struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy);
80
81 void sas_hae_reset(struct work_struct *work);
82
83 #ifdef CONFIG_SCSI_SAS_HOST_SMP
84 extern int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
85 struct request *rsp);
86 #else
87 static inline int sas_smp_host_handler(struct Scsi_Host *shost,
88 struct request *req,
89 struct request *rsp)
90 {
91 shost_printk(KERN_ERR, shost,
92 "Cannot send SMP to a sas host (not enabled in CONFIG)\n");
93 return -EINVAL;
94 }
95 #endif
96
97 static inline void sas_queue_event(int event, spinlock_t *lock,
98 unsigned long *pending,
99 struct work_struct *work,
100 struct sas_ha_struct *sas_ha)
101 {
102 unsigned long flags;
103
104 spin_lock_irqsave(lock, flags);
105 if (test_bit(event, pending)) {
106 spin_unlock_irqrestore(lock, flags);
107 return;
108 }
109 __set_bit(event, pending);
110 spin_unlock_irqrestore(lock, flags);
111
112 spin_lock_irqsave(&sas_ha->state_lock, flags);
113 if (sas_ha->state != SAS_HA_UNREGISTERED) {
114 scsi_queue_work(sas_ha->core.shost, work);
115 }
116 spin_unlock_irqrestore(&sas_ha->state_lock, flags);
117 }
118
119 static inline void sas_begin_event(int event, spinlock_t *lock,
120 unsigned long *pending)
121 {
122 unsigned long flags;
123
124 spin_lock_irqsave(lock, flags);
125 __clear_bit(event, pending);
126 spin_unlock_irqrestore(lock, flags);
127 }
128
129 static inline void sas_fill_in_rphy(struct domain_device *dev,
130 struct sas_rphy *rphy)
131 {
132 rphy->identify.sas_address = SAS_ADDR(dev->sas_addr);
133 rphy->identify.initiator_port_protocols = dev->iproto;
134 rphy->identify.target_port_protocols = dev->tproto;
135 switch (dev->dev_type) {
136 case SATA_DEV:
137 /* FIXME: need sata device type */
138 case SAS_END_DEV:
139 rphy->identify.device_type = SAS_END_DEVICE;
140 break;
141 case EDGE_DEV:
142 rphy->identify.device_type = SAS_EDGE_EXPANDER_DEVICE;
143 break;
144 case FANOUT_DEV:
145 rphy->identify.device_type = SAS_FANOUT_EXPANDER_DEVICE;
146 break;
147 default:
148 rphy->identify.device_type = SAS_PHY_UNUSED;
149 break;
150 }
151 }
152
153 static inline void sas_add_parent_port(struct domain_device *dev, int phy_id)
154 {
155 struct expander_device *ex = &dev->ex_dev;
156 struct ex_phy *ex_phy = &ex->ex_phy[phy_id];
157
158 if (!ex->parent_port) {
159 ex->parent_port = sas_port_alloc(&dev->rphy->dev, phy_id);
160 /* FIXME: error handling */
161 BUG_ON(!ex->parent_port);
162 BUG_ON(sas_port_add(ex->parent_port));
163 sas_port_mark_backlink(ex->parent_port);
164 }
165 sas_port_add_phy(ex->parent_port, ex_phy->phy);
166 }
167
168 #endif /* _SAS_INTERNAL_H_ */
169
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