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James Bottomley2908d772006-08-29 09:22:51 -05001/*
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
James Bottomley96db6fa2011-01-23 08:19:00 -060036#define SAS_DPRINTK(fmt, ...) printk(KERN_DEBUG "sas: " fmt, ## __VA_ARGS__)
James Bottomley2908d772006-08-29 09:22:51 -050037
Darrick J. Wong3a2755a2007-01-30 01:18:58 -080038#define TO_SAS_TASK(_scsi_cmd) ((void *)(_scsi_cmd)->host_scribble)
39#define ASSIGN_SAS_TASK(_sc, _t) do { (_sc)->host_scribble = (void *) _t; } while (0)
40
James Bottomley2908d772006-08-29 09:22:51 -050041void sas_scsi_recover_host(struct Scsi_Host *shost);
42
43int sas_show_class(enum sas_class class, char *buf);
Darrick J. Wong5929faf2007-11-05 11:51:17 -080044int sas_show_proto(enum sas_protocol proto, char *buf);
James Bottomley88edf742006-09-06 17:36:13 -050045int sas_show_linkrate(enum sas_linkrate linkrate, char *buf);
James Bottomley2908d772006-08-29 09:22:51 -050046int 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
51int sas_register_ports(struct sas_ha_struct *sas_ha);
52void sas_unregister_ports(struct sas_ha_struct *sas_ha);
53
Jens Axboe242f9dc2008-09-14 05:55:09 -070054enum blk_eh_timer_return sas_scsi_timed_out(struct scsi_cmnd *);
James Bottomley2908d772006-08-29 09:22:51 -050055
56int sas_init_queue(struct sas_ha_struct *sas_ha);
57int sas_init_events(struct sas_ha_struct *sas_ha);
58void sas_shutdown_queue(struct sas_ha_struct *sas_ha);
59
Dan Williams90f1e102011-05-24 13:17:53 -070060void sas_deform_port(struct asd_sas_phy *phy, int gone);
James Bottomley2908d772006-08-29 09:22:51 -050061
David Howellsc4028952006-11-22 14:57:56 +000062void sas_porte_bytes_dmaed(struct work_struct *work);
63void sas_porte_broadcast_rcvd(struct work_struct *work);
64void sas_porte_link_reset_err(struct work_struct *work);
65void sas_porte_timer_event(struct work_struct *work);
66void sas_porte_hard_reset(struct work_struct *work);
James Bottomley2908d772006-08-29 09:22:51 -050067
68int sas_notify_lldd_dev_found(struct domain_device *);
69void sas_notify_lldd_dev_gone(struct domain_device *);
70
71int sas_smp_phy_control(struct domain_device *dev, int phy_id,
James Bottomleya01e70e2006-09-06 19:28:07 -050072 enum phy_func phy_func, struct sas_phy_linkrates *);
James Bottomley2908d772006-08-29 09:22:51 -050073int sas_smp_get_phy_events(struct sas_phy *phy);
74
75struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy);
76
David Howellsc4028952006-11-22 14:57:56 +000077void sas_hae_reset(struct work_struct *work);
James Bottomley2908d772006-08-29 09:22:51 -050078
James Bottomleyb98e66f2007-12-28 16:35:17 -060079#ifdef CONFIG_SCSI_SAS_HOST_SMP
80extern int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
81 struct request *rsp);
82#else
83static inline int sas_smp_host_handler(struct Scsi_Host *shost,
84 struct request *req,
85 struct request *rsp)
86{
87 shost_printk(KERN_ERR, shost,
88 "Cannot send SMP to a sas host (not enabled in CONFIG)\n");
89 return -EINVAL;
90}
91#endif
92
James Bottomley2908d772006-08-29 09:22:51 -050093static inline void sas_queue_event(int event, spinlock_t *lock,
94 unsigned long *pending,
95 struct work_struct *work,
Darrick J. Wong6b0efb82007-01-11 14:15:43 -080096 struct sas_ha_struct *sas_ha)
James Bottomley2908d772006-08-29 09:22:51 -050097{
98 unsigned long flags;
99
100 spin_lock_irqsave(lock, flags);
101 if (test_bit(event, pending)) {
102 spin_unlock_irqrestore(lock, flags);
103 return;
104 }
105 __set_bit(event, pending);
106 spin_unlock_irqrestore(lock, flags);
Darrick J. Wong6b0efb82007-01-11 14:15:43 -0800107
108 spin_lock_irqsave(&sas_ha->state_lock, flags);
109 if (sas_ha->state != SAS_HA_UNREGISTERED) {
110 scsi_queue_work(sas_ha->core.shost, work);
111 }
112 spin_unlock_irqrestore(&sas_ha->state_lock, flags);
James Bottomley2908d772006-08-29 09:22:51 -0500113}
114
115static inline void sas_begin_event(int event, spinlock_t *lock,
116 unsigned long *pending)
117{
118 unsigned long flags;
119
120 spin_lock_irqsave(lock, flags);
121 __clear_bit(event, pending);
122 spin_unlock_irqrestore(lock, flags);
123}
124
125static inline void sas_fill_in_rphy(struct domain_device *dev,
126 struct sas_rphy *rphy)
127{
128 rphy->identify.sas_address = SAS_ADDR(dev->sas_addr);
129 rphy->identify.initiator_port_protocols = dev->iproto;
130 rphy->identify.target_port_protocols = dev->tproto;
131 switch (dev->dev_type) {
132 case SATA_DEV:
133 /* FIXME: need sata device type */
134 case SAS_END_DEV:
135 rphy->identify.device_type = SAS_END_DEVICE;
136 break;
137 case EDGE_DEV:
138 rphy->identify.device_type = SAS_EDGE_EXPANDER_DEVICE;
139 break;
140 case FANOUT_DEV:
141 rphy->identify.device_type = SAS_FANOUT_EXPANDER_DEVICE;
142 break;
143 default:
144 rphy->identify.device_type = SAS_PHY_UNUSED;
145 break;
146 }
147}
148
149static inline void sas_add_parent_port(struct domain_device *dev, int phy_id)
150{
151 struct expander_device *ex = &dev->ex_dev;
152 struct ex_phy *ex_phy = &ex->ex_phy[phy_id];
153
154 if (!ex->parent_port) {
155 ex->parent_port = sas_port_alloc(&dev->rphy->dev, phy_id);
156 /* FIXME: error handling */
157 BUG_ON(!ex->parent_port);
158 BUG_ON(sas_port_add(ex->parent_port));
159 sas_port_mark_backlink(ex->parent_port);
160 }
161 sas_port_add_phy(ex->parent_port, ex_phy->phy);
162}
163
164#endif /* _SAS_INTERNAL_H_ */