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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
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
Darrick J. Wong3a2755a2007-01-30 01:18:58 -080042#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
James Bottomley2908d772006-08-29 09:22:51 -050045void sas_scsi_recover_host(struct Scsi_Host *shost);
46
47int sas_show_class(enum sas_class class, char *buf);
Darrick J. Wong5929faf2007-11-05 11:51:17 -080048int sas_show_proto(enum sas_protocol proto, char *buf);
James Bottomley88edf742006-09-06 17:36:13 -050049int sas_show_linkrate(enum sas_linkrate linkrate, char *buf);
James Bottomley2908d772006-08-29 09:22:51 -050050int sas_show_oob_mode(enum sas_oob_mode oob_mode, char *buf);
51
52int sas_register_phys(struct sas_ha_struct *sas_ha);
53void sas_unregister_phys(struct sas_ha_struct *sas_ha);
54
55int sas_register_ports(struct sas_ha_struct *sas_ha);
56void sas_unregister_ports(struct sas_ha_struct *sas_ha);
57
58enum scsi_eh_timer_return sas_scsi_timed_out(struct scsi_cmnd *);
59
60int sas_init_queue(struct sas_ha_struct *sas_ha);
61int sas_init_events(struct sas_ha_struct *sas_ha);
62void sas_shutdown_queue(struct sas_ha_struct *sas_ha);
63
64void sas_deform_port(struct asd_sas_phy *phy);
65
David Howellsc4028952006-11-22 14:57:56 +000066void sas_porte_bytes_dmaed(struct work_struct *work);
67void sas_porte_broadcast_rcvd(struct work_struct *work);
68void sas_porte_link_reset_err(struct work_struct *work);
69void sas_porte_timer_event(struct work_struct *work);
70void sas_porte_hard_reset(struct work_struct *work);
James Bottomley2908d772006-08-29 09:22:51 -050071
72int sas_notify_lldd_dev_found(struct domain_device *);
73void sas_notify_lldd_dev_gone(struct domain_device *);
74
75int sas_smp_phy_control(struct domain_device *dev, int phy_id,
James Bottomleya01e70e2006-09-06 19:28:07 -050076 enum phy_func phy_func, struct sas_phy_linkrates *);
James Bottomley2908d772006-08-29 09:22:51 -050077int sas_smp_get_phy_events(struct sas_phy *phy);
78
79struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy);
80
David Howellsc4028952006-11-22 14:57:56 +000081void sas_hae_reset(struct work_struct *work);
James Bottomley2908d772006-08-29 09:22:51 -050082
83static inline void sas_queue_event(int event, spinlock_t *lock,
84 unsigned long *pending,
85 struct work_struct *work,
Darrick J. Wong6b0efb82007-01-11 14:15:43 -080086 struct sas_ha_struct *sas_ha)
James Bottomley2908d772006-08-29 09:22:51 -050087{
88 unsigned long flags;
89
90 spin_lock_irqsave(lock, flags);
91 if (test_bit(event, pending)) {
92 spin_unlock_irqrestore(lock, flags);
93 return;
94 }
95 __set_bit(event, pending);
96 spin_unlock_irqrestore(lock, flags);
Darrick J. Wong6b0efb82007-01-11 14:15:43 -080097
98 spin_lock_irqsave(&sas_ha->state_lock, flags);
99 if (sas_ha->state != SAS_HA_UNREGISTERED) {
100 scsi_queue_work(sas_ha->core.shost, work);
101 }
102 spin_unlock_irqrestore(&sas_ha->state_lock, flags);
James Bottomley2908d772006-08-29 09:22:51 -0500103}
104
105static inline void sas_begin_event(int event, spinlock_t *lock,
106 unsigned long *pending)
107{
108 unsigned long flags;
109
110 spin_lock_irqsave(lock, flags);
111 __clear_bit(event, pending);
112 spin_unlock_irqrestore(lock, flags);
113}
114
115static inline void sas_fill_in_rphy(struct domain_device *dev,
116 struct sas_rphy *rphy)
117{
118 rphy->identify.sas_address = SAS_ADDR(dev->sas_addr);
119 rphy->identify.initiator_port_protocols = dev->iproto;
120 rphy->identify.target_port_protocols = dev->tproto;
121 switch (dev->dev_type) {
122 case SATA_DEV:
123 /* FIXME: need sata device type */
124 case SAS_END_DEV:
125 rphy->identify.device_type = SAS_END_DEVICE;
126 break;
127 case EDGE_DEV:
128 rphy->identify.device_type = SAS_EDGE_EXPANDER_DEVICE;
129 break;
130 case FANOUT_DEV:
131 rphy->identify.device_type = SAS_FANOUT_EXPANDER_DEVICE;
132 break;
133 default:
134 rphy->identify.device_type = SAS_PHY_UNUSED;
135 break;
136 }
137}
138
139static inline void sas_add_parent_port(struct domain_device *dev, int phy_id)
140{
141 struct expander_device *ex = &dev->ex_dev;
142 struct ex_phy *ex_phy = &ex->ex_phy[phy_id];
143
144 if (!ex->parent_port) {
145 ex->parent_port = sas_port_alloc(&dev->rphy->dev, phy_id);
146 /* FIXME: error handling */
147 BUG_ON(!ex->parent_port);
148 BUG_ON(sas_port_add(ex->parent_port));
149 sas_port_mark_backlink(ex->parent_port);
150 }
151 sas_port_add_phy(ex->parent_port, ex_phy->phy);
152}
153
154#endif /* _SAS_INTERNAL_H_ */