1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
/*
* Serial Attached SCSI (SAS) Phy class
*
* Copyright (C) 2005 Adaptec, Inc. All rights reserved.
* Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
*
* This file is licensed under GPLv2.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "sas_internal.h"
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_sas.h>
#include "../scsi_sas_internal.h"
/* ---------- Phy events ---------- */
static void sas_phye_loss_of_signal(struct work_struct *work)
{
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
phy->in_shutdown = 0;
phy->error = 0;
sas_deform_port(phy, 1);
}
static void sas_phye_oob_done(struct work_struct *work)
{
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
phy->in_shutdown = 0;
phy->error = 0;
}
static void sas_phye_oob_error(struct work_struct *work)
{
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
struct sas_ha_struct *sas_ha = phy->ha;
struct asd_sas_port *port = phy->port;
struct sas_internal *i =
to_sas_internal(sas_ha->core.shost->transportt);
sas_deform_port(phy, 1);
if (!port && phy->enabled && i->dft->lldd_control_phy) {
phy->error++;
switch (phy->error) {
case 1:
case 2:
i->dft->lldd_control_phy(phy, PHY_FUNC_HARD_RESET,
NULL);
break;
case 3:
default:
phy->error = 0;
phy->enabled = 0;
i->dft->lldd_control_phy(phy, PHY_FUNC_DISABLE, NULL);
break;
}
}
}
static void sas_phye_spinup_hold(struct work_struct *work)
{
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
struct sas_ha_struct *sas_ha = phy->ha;
struct sas_internal *i =
to_sas_internal(sas_ha->core.shost->transportt);
phy->error = 0;
i->dft->lldd_control_phy(phy, PHY_FUNC_RELEASE_SPINUP_HOLD, NULL);
}
static void sas_phye_resume_timeout(struct work_struct *work)
{
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
/* phew, lldd got the phy back in the nick of time */
if (!phy->suspended) {
dev_info(&phy->phy->dev, "resume timeout cancelled\n");
return;
}
phy->error = 0;
phy->suspended = 0;
sas_deform_port(phy, 1);
}
static void sas_phye_shutdown(struct work_struct *work)
{
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
struct sas_ha_struct *sas_ha = phy->ha;
struct sas_internal *i =
to_sas_internal(sas_ha->core.shost->transportt);
if (phy->enabled) {
int ret;
phy->error = 0;
phy->enabled = 0;
ret = i->dft->lldd_control_phy(phy, PHY_FUNC_DISABLE, NULL);
if (ret)
sas_printk("lldd disable phy%02d returned %d\n",
phy->id, ret);
} else
sas_printk("phy%02d is not enabled, cannot shutdown\n",
phy->id);
}
/* ---------- Phy class registration ---------- */
int sas_register_phys(struct sas_ha_struct *sas_ha)
{
int i;
/* Now register the phys. */
for (i = 0; i < sas_ha->num_phys; i++) {
struct asd_sas_phy *phy = sas_ha->sas_phy[i];
phy->error = 0;
atomic_set(&phy->event_nr, 0);
INIT_LIST_HEAD(&phy->port_phy_el);
phy->port = NULL;
phy->ha = sas_ha;
spin_lock_init(&phy->frame_rcvd_lock);
spin_lock_init(&phy->sas_prim_lock);
phy->frame_rcvd_size = 0;
phy->phy = sas_phy_alloc(&sas_ha->core.shost->shost_gendev, i);
if (!phy->phy)
return -ENOMEM;
phy->phy->identify.initiator_port_protocols =
phy->iproto;
phy->phy->identify.target_port_protocols = phy->tproto;
phy->phy->identify.sas_address = SAS_ADDR(sas_ha->sas_addr);
phy->phy->identify.phy_identifier = i;
phy->phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
phy->phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
phy->phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN;
phy->phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN;
phy->phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
sas_phy_add(phy->phy);
}
return 0;
}
const work_func_t sas_phy_event_fns[PHY_NUM_EVENTS] = {
[PHYE_LOSS_OF_SIGNAL] = sas_phye_loss_of_signal,
[PHYE_OOB_DONE] = sas_phye_oob_done,
[PHYE_OOB_ERROR] = sas_phye_oob_error,
[PHYE_SPINUP_HOLD] = sas_phye_spinup_hold,
[PHYE_RESUME_TIMEOUT] = sas_phye_resume_timeout,
[PHYE_SHUTDOWN] = sas_phye_shutdown,
};
|
