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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 | ||
1c393b97 JY |
64 | struct asd_sas_event *sas_alloc_event(struct asd_sas_phy *phy); |
65 | void sas_free_event(struct asd_sas_event *event); | |
66 | ||
2908d778 JB |
67 | int sas_register_ports(struct sas_ha_struct *sas_ha); |
68 | void sas_unregister_ports(struct sas_ha_struct *sas_ha); | |
69 | ||
2908d778 | 70 | int sas_init_events(struct sas_ha_struct *sas_ha); |
87c8331f DW |
71 | void sas_disable_revalidation(struct sas_ha_struct *ha); |
72 | void sas_enable_revalidation(struct sas_ha_struct *ha); | |
5d7f6d10 | 73 | void __sas_drain_work(struct sas_ha_struct *ha); |
2908d778 | 74 | |
90f1e10d | 75 | void sas_deform_port(struct asd_sas_phy *phy, int gone); |
2908d778 | 76 | |
c4028958 DH |
77 | void sas_porte_bytes_dmaed(struct work_struct *work); |
78 | void sas_porte_broadcast_rcvd(struct work_struct *work); | |
79 | void sas_porte_link_reset_err(struct work_struct *work); | |
80 | void sas_porte_timer_event(struct work_struct *work); | |
81 | void sas_porte_hard_reset(struct work_struct *work); | |
6d311fa7 | 82 | int sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw); |
2908d778 JB |
83 | |
84 | int sas_notify_lldd_dev_found(struct domain_device *); | |
85 | void sas_notify_lldd_dev_gone(struct domain_device *); | |
86 | ||
651a0136 CH |
87 | void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost, |
88 | struct sas_rphy *rphy); | |
2908d778 | 89 | int sas_smp_phy_control(struct domain_device *dev, int phy_id, |
a01e70e5 | 90 | enum phy_func phy_func, struct sas_phy_linkrates *); |
2908d778 JB |
91 | int sas_smp_get_phy_events(struct sas_phy *phy); |
92 | ||
6d311fa7 | 93 | int sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event); |
f41a0c44 | 94 | void sas_device_set_phy(struct domain_device *dev, struct sas_port *port); |
2908d778 | 95 | struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy); |
81c757bc | 96 | struct domain_device *sas_ex_to_ata(struct domain_device *ex_dev, int phy_id); |
354cf829 DW |
97 | int sas_ex_phy_discover(struct domain_device *dev, int single); |
98 | int sas_get_report_phy_sata(struct domain_device *dev, int phy_id, | |
99 | struct smp_resp *rps_resp); | |
ab526633 | 100 | int sas_try_ata_reset(struct asd_sas_phy *phy); |
c4028958 | 101 | void sas_hae_reset(struct work_struct *work); |
2908d778 | 102 | |
735f7d2f | 103 | void sas_free_device(struct kref *kref); |
0558f33c | 104 | void sas_destruct_devices(struct asd_sas_port *port); |
735f7d2f | 105 | |
1c393b97 JY |
106 | extern const work_func_t sas_phy_event_fns[PHY_NUM_EVENTS]; |
107 | extern const work_func_t sas_port_event_fns[PORT_NUM_EVENTS]; | |
108 | ||
b98e66fa | 109 | #ifdef CONFIG_SCSI_SAS_HOST_SMP |
651a0136 | 110 | extern void sas_smp_host_handler(struct bsg_job *job, struct Scsi_Host *shost); |
b98e66fa | 111 | #else |
651a0136 CH |
112 | static inline void sas_smp_host_handler(struct bsg_job *job, |
113 | struct Scsi_Host *shost) | |
b98e66fa JB |
114 | { |
115 | shost_printk(KERN_ERR, shost, | |
116 | "Cannot send SMP to a sas host (not enabled in CONFIG)\n"); | |
651a0136 | 117 | bsg_job_done(job, -EINVAL, 0); |
b98e66fa JB |
118 | } |
119 | #endif | |
120 | ||
9508a66f DW |
121 | static inline void sas_fail_probe(struct domain_device *dev, const char *func, int err) |
122 | { | |
123 | SAS_DPRINTK("%s: for %s device %16llx returned %d\n", | |
124 | func, dev->parent ? "exp-attached" : | |
125 | "direct-attached", | |
126 | SAS_ADDR(dev->sas_addr), err); | |
127 | sas_unregister_dev(dev->port, dev); | |
128 | } | |
129 | ||
2908d778 JB |
130 | static inline void sas_fill_in_rphy(struct domain_device *dev, |
131 | struct sas_rphy *rphy) | |
132 | { | |
133 | rphy->identify.sas_address = SAS_ADDR(dev->sas_addr); | |
134 | rphy->identify.initiator_port_protocols = dev->iproto; | |
135 | rphy->identify.target_port_protocols = dev->tproto; | |
136 | switch (dev->dev_type) { | |
aa9f8328 | 137 | case SAS_SATA_DEV: |
2908d778 | 138 | /* FIXME: need sata device type */ |
aa9f8328 JB |
139 | case SAS_END_DEVICE: |
140 | case SAS_SATA_PENDING: | |
2908d778 JB |
141 | rphy->identify.device_type = SAS_END_DEVICE; |
142 | break; | |
aa9f8328 | 143 | case SAS_EDGE_EXPANDER_DEVICE: |
2908d778 JB |
144 | rphy->identify.device_type = SAS_EDGE_EXPANDER_DEVICE; |
145 | break; | |
aa9f8328 | 146 | case SAS_FANOUT_EXPANDER_DEVICE: |
2908d778 JB |
147 | rphy->identify.device_type = SAS_FANOUT_EXPANDER_DEVICE; |
148 | break; | |
149 | default: | |
150 | rphy->identify.device_type = SAS_PHY_UNUSED; | |
151 | break; | |
152 | } | |
153 | } | |
154 | ||
899fcf40 DW |
155 | static inline void sas_phy_set_target(struct asd_sas_phy *p, struct domain_device *dev) |
156 | { | |
157 | struct sas_phy *phy = p->phy; | |
158 | ||
159 | if (dev) { | |
160 | if (dev_is_sata(dev)) | |
161 | phy->identify.device_type = SAS_END_DEVICE; | |
162 | else | |
163 | phy->identify.device_type = dev->dev_type; | |
164 | phy->identify.target_port_protocols = dev->tproto; | |
165 | } else { | |
166 | phy->identify.device_type = SAS_PHY_UNUSED; | |
167 | phy->identify.target_port_protocols = 0; | |
168 | } | |
169 | } | |
170 | ||
2908d778 JB |
171 | static inline void sas_add_parent_port(struct domain_device *dev, int phy_id) |
172 | { | |
173 | struct expander_device *ex = &dev->ex_dev; | |
174 | struct ex_phy *ex_phy = &ex->ex_phy[phy_id]; | |
175 | ||
176 | if (!ex->parent_port) { | |
177 | ex->parent_port = sas_port_alloc(&dev->rphy->dev, phy_id); | |
178 | /* FIXME: error handling */ | |
179 | BUG_ON(!ex->parent_port); | |
180 | BUG_ON(sas_port_add(ex->parent_port)); | |
181 | sas_port_mark_backlink(ex->parent_port); | |
182 | } | |
183 | sas_port_add_phy(ex->parent_port, ex_phy->phy); | |
184 | } | |
185 | ||
735f7d2f DW |
186 | static inline struct domain_device *sas_alloc_device(void) |
187 | { | |
188 | struct domain_device *dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
189 | ||
190 | if (dev) { | |
191 | INIT_LIST_HEAD(&dev->siblings); | |
192 | INIT_LIST_HEAD(&dev->dev_list_node); | |
87c8331f | 193 | INIT_LIST_HEAD(&dev->disco_list_node); |
735f7d2f | 194 | kref_init(&dev->kref); |
9095a64a | 195 | spin_lock_init(&dev->done_lock); |
735f7d2f DW |
196 | } |
197 | return dev; | |
198 | } | |
199 | ||
200 | static inline void sas_put_device(struct domain_device *dev) | |
201 | { | |
202 | kref_put(&dev->kref, sas_free_device); | |
203 | } | |
204 | ||
2908d778 | 205 | #endif /* _SAS_INTERNAL_H_ */ |