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2908d778 JB |
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> | |
899fcf40 | 33 | #include <scsi/sas_ata.h> |
2908d778 JB |
34 | |
35 | #define sas_printk(fmt, ...) printk(KERN_NOTICE "sas: " fmt, ## __VA_ARGS__) | |
36 | ||
96db6fa9 | 37 | #define SAS_DPRINTK(fmt, ...) printk(KERN_DEBUG "sas: " fmt, ## __VA_ARGS__) |
2908d778 | 38 | |
3a2755af DW |
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 | ||
0b3e09da DW |
42 | struct sas_phy_data { |
43 | /* let reset be performed in sas_queue_work() context */ | |
44 | struct sas_phy *phy; | |
45 | struct mutex event_lock; | |
46 | int hard_reset; | |
47 | int reset_result; | |
22b9153f | 48 | struct sas_work reset_work; |
2a559f4b DW |
49 | int enable; |
50 | int enable_result; | |
22b9153f | 51 | struct sas_work enable_work; |
0b3e09da DW |
52 | }; |
53 | ||
2908d778 JB |
54 | void sas_scsi_recover_host(struct Scsi_Host *shost); |
55 | ||
56 | int sas_show_class(enum sas_class class, char *buf); | |
5929faf3 | 57 | int sas_show_proto(enum sas_protocol proto, char *buf); |
88edf746 | 58 | int sas_show_linkrate(enum sas_linkrate linkrate, char *buf); |
2908d778 JB |
59 | int sas_show_oob_mode(enum sas_oob_mode oob_mode, char *buf); |
60 | ||
61 | int sas_register_phys(struct sas_ha_struct *sas_ha); | |
62 | void sas_unregister_phys(struct sas_ha_struct *sas_ha); | |
63 | ||
64 | int sas_register_ports(struct sas_ha_struct *sas_ha); | |
65 | void sas_unregister_ports(struct sas_ha_struct *sas_ha); | |
66 | ||
242f9dcb | 67 | enum blk_eh_timer_return sas_scsi_timed_out(struct scsi_cmnd *); |
2908d778 | 68 | |
2908d778 | 69 | int sas_init_events(struct sas_ha_struct *sas_ha); |
87c8331f DW |
70 | void sas_disable_revalidation(struct sas_ha_struct *ha); |
71 | void sas_enable_revalidation(struct sas_ha_struct *ha); | |
5d7f6d10 | 72 | void __sas_drain_work(struct sas_ha_struct *ha); |
2908d778 | 73 | |
90f1e10d | 74 | void sas_deform_port(struct asd_sas_phy *phy, int gone); |
2908d778 | 75 | |
c4028958 DH |
76 | void sas_porte_bytes_dmaed(struct work_struct *work); |
77 | void sas_porte_broadcast_rcvd(struct work_struct *work); | |
78 | void sas_porte_link_reset_err(struct work_struct *work); | |
79 | void sas_porte_timer_event(struct work_struct *work); | |
80 | void sas_porte_hard_reset(struct work_struct *work); | |
22b9153f | 81 | void sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw); |
2908d778 JB |
82 | |
83 | int sas_notify_lldd_dev_found(struct domain_device *); | |
84 | void sas_notify_lldd_dev_gone(struct domain_device *); | |
85 | ||
86 | int sas_smp_phy_control(struct domain_device *dev, int phy_id, | |
a01e70e5 | 87 | enum phy_func phy_func, struct sas_phy_linkrates *); |
2908d778 JB |
88 | int sas_smp_get_phy_events(struct sas_phy *phy); |
89 | ||
303694ee | 90 | void sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event); |
f41a0c44 | 91 | void sas_device_set_phy(struct domain_device *dev, struct sas_port *port); |
2908d778 | 92 | struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy); |
81c757bc | 93 | struct domain_device *sas_ex_to_ata(struct domain_device *ex_dev, int phy_id); |
354cf829 DW |
94 | int sas_ex_phy_discover(struct domain_device *dev, int single); |
95 | int sas_get_report_phy_sata(struct domain_device *dev, int phy_id, | |
96 | struct smp_resp *rps_resp); | |
ab526633 | 97 | int sas_try_ata_reset(struct asd_sas_phy *phy); |
c4028958 | 98 | void sas_hae_reset(struct work_struct *work); |
2908d778 | 99 | |
735f7d2f DW |
100 | void sas_free_device(struct kref *kref); |
101 | ||
b98e66fa JB |
102 | #ifdef CONFIG_SCSI_SAS_HOST_SMP |
103 | extern int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, | |
104 | struct request *rsp); | |
105 | #else | |
106 | static inline int sas_smp_host_handler(struct Scsi_Host *shost, | |
107 | struct request *req, | |
108 | struct request *rsp) | |
109 | { | |
110 | shost_printk(KERN_ERR, shost, | |
111 | "Cannot send SMP to a sas host (not enabled in CONFIG)\n"); | |
112 | return -EINVAL; | |
113 | } | |
114 | #endif | |
115 | ||
9508a66f DW |
116 | static inline void sas_fail_probe(struct domain_device *dev, const char *func, int err) |
117 | { | |
118 | SAS_DPRINTK("%s: for %s device %16llx returned %d\n", | |
119 | func, dev->parent ? "exp-attached" : | |
120 | "direct-attached", | |
121 | SAS_ADDR(dev->sas_addr), err); | |
122 | sas_unregister_dev(dev->port, dev); | |
123 | } | |
124 | ||
2908d778 JB |
125 | static 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) { | |
aa9f8328 | 132 | case SAS_SATA_DEV: |
2908d778 | 133 | /* FIXME: need sata device type */ |
aa9f8328 JB |
134 | case SAS_END_DEVICE: |
135 | case SAS_SATA_PENDING: | |
2908d778 JB |
136 | rphy->identify.device_type = SAS_END_DEVICE; |
137 | break; | |
aa9f8328 | 138 | case SAS_EDGE_EXPANDER_DEVICE: |
2908d778 JB |
139 | rphy->identify.device_type = SAS_EDGE_EXPANDER_DEVICE; |
140 | break; | |
aa9f8328 | 141 | case SAS_FANOUT_EXPANDER_DEVICE: |
2908d778 JB |
142 | rphy->identify.device_type = SAS_FANOUT_EXPANDER_DEVICE; |
143 | break; | |
144 | default: | |
145 | rphy->identify.device_type = SAS_PHY_UNUSED; | |
146 | break; | |
147 | } | |
148 | } | |
149 | ||
899fcf40 DW |
150 | static inline void sas_phy_set_target(struct asd_sas_phy *p, struct domain_device *dev) |
151 | { | |
152 | struct sas_phy *phy = p->phy; | |
153 | ||
154 | if (dev) { | |
155 | if (dev_is_sata(dev)) | |
156 | phy->identify.device_type = SAS_END_DEVICE; | |
157 | else | |
158 | phy->identify.device_type = dev->dev_type; | |
159 | phy->identify.target_port_protocols = dev->tproto; | |
160 | } else { | |
161 | phy->identify.device_type = SAS_PHY_UNUSED; | |
162 | phy->identify.target_port_protocols = 0; | |
163 | } | |
164 | } | |
165 | ||
2908d778 JB |
166 | static inline void sas_add_parent_port(struct domain_device *dev, int phy_id) |
167 | { | |
168 | struct expander_device *ex = &dev->ex_dev; | |
169 | struct ex_phy *ex_phy = &ex->ex_phy[phy_id]; | |
170 | ||
171 | if (!ex->parent_port) { | |
172 | ex->parent_port = sas_port_alloc(&dev->rphy->dev, phy_id); | |
173 | /* FIXME: error handling */ | |
174 | BUG_ON(!ex->parent_port); | |
175 | BUG_ON(sas_port_add(ex->parent_port)); | |
176 | sas_port_mark_backlink(ex->parent_port); | |
177 | } | |
178 | sas_port_add_phy(ex->parent_port, ex_phy->phy); | |
179 | } | |
180 | ||
735f7d2f DW |
181 | static inline struct domain_device *sas_alloc_device(void) |
182 | { | |
183 | struct domain_device *dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
184 | ||
185 | if (dev) { | |
186 | INIT_LIST_HEAD(&dev->siblings); | |
187 | INIT_LIST_HEAD(&dev->dev_list_node); | |
87c8331f | 188 | INIT_LIST_HEAD(&dev->disco_list_node); |
735f7d2f | 189 | kref_init(&dev->kref); |
9095a64a | 190 | spin_lock_init(&dev->done_lock); |
735f7d2f DW |
191 | } |
192 | return dev; | |
193 | } | |
194 | ||
195 | static inline void sas_put_device(struct domain_device *dev) | |
196 | { | |
197 | kref_put(&dev->kref, sas_free_device); | |
198 | } | |
199 | ||
2908d778 | 200 | #endif /* _SAS_INTERNAL_H_ */ |