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2908d778 JB |
1 | /* |
2 | * Serial Attached SCSI (SAS) Phy class | |
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
22 | * | |
23 | */ | |
24 | ||
25 | #include "sas_internal.h" | |
26 | #include <scsi/scsi_host.h> | |
27 | #include <scsi/scsi_transport.h> | |
28 | #include <scsi/scsi_transport_sas.h> | |
29 | #include "../scsi_sas_internal.h" | |
30 | ||
31 | /* ---------- Phy events ---------- */ | |
32 | ||
c4028958 | 33 | static void sas_phye_loss_of_signal(struct work_struct *work) |
2908d778 | 34 | { |
c4028958 DH |
35 | struct asd_sas_event *ev = |
36 | container_of(work, struct asd_sas_event, work); | |
37 | struct asd_sas_phy *phy = ev->phy; | |
2908d778 | 38 | |
b15ebe0b | 39 | clear_bit(PHYE_LOSS_OF_SIGNAL, &phy->phy_events_pending); |
2908d778 | 40 | phy->error = 0; |
90f1e10d | 41 | sas_deform_port(phy, 1); |
2908d778 JB |
42 | } |
43 | ||
c4028958 | 44 | static void sas_phye_oob_done(struct work_struct *work) |
2908d778 | 45 | { |
c4028958 DH |
46 | struct asd_sas_event *ev = |
47 | container_of(work, struct asd_sas_event, work); | |
48 | struct asd_sas_phy *phy = ev->phy; | |
2908d778 | 49 | |
b15ebe0b | 50 | clear_bit(PHYE_OOB_DONE, &phy->phy_events_pending); |
2908d778 JB |
51 | phy->error = 0; |
52 | } | |
53 | ||
c4028958 | 54 | static void sas_phye_oob_error(struct work_struct *work) |
2908d778 | 55 | { |
c4028958 DH |
56 | struct asd_sas_event *ev = |
57 | container_of(work, struct asd_sas_event, work); | |
58 | struct asd_sas_phy *phy = ev->phy; | |
2908d778 JB |
59 | struct sas_ha_struct *sas_ha = phy->ha; |
60 | struct asd_sas_port *port = phy->port; | |
61 | struct sas_internal *i = | |
62 | to_sas_internal(sas_ha->core.shost->transportt); | |
63 | ||
b15ebe0b | 64 | clear_bit(PHYE_OOB_ERROR, &phy->phy_events_pending); |
2908d778 | 65 | |
90f1e10d | 66 | sas_deform_port(phy, 1); |
2908d778 JB |
67 | |
68 | if (!port && phy->enabled && i->dft->lldd_control_phy) { | |
69 | phy->error++; | |
70 | switch (phy->error) { | |
71 | case 1: | |
72 | case 2: | |
a01e70e5 JB |
73 | i->dft->lldd_control_phy(phy, PHY_FUNC_HARD_RESET, |
74 | NULL); | |
2908d778 JB |
75 | break; |
76 | case 3: | |
77 | default: | |
78 | phy->error = 0; | |
79 | phy->enabled = 0; | |
a01e70e5 | 80 | i->dft->lldd_control_phy(phy, PHY_FUNC_DISABLE, NULL); |
2908d778 JB |
81 | break; |
82 | } | |
83 | } | |
84 | } | |
85 | ||
c4028958 | 86 | static void sas_phye_spinup_hold(struct work_struct *work) |
2908d778 | 87 | { |
c4028958 DH |
88 | struct asd_sas_event *ev = |
89 | container_of(work, struct asd_sas_event, work); | |
90 | struct asd_sas_phy *phy = ev->phy; | |
2908d778 JB |
91 | struct sas_ha_struct *sas_ha = phy->ha; |
92 | struct sas_internal *i = | |
93 | to_sas_internal(sas_ha->core.shost->transportt); | |
94 | ||
b15ebe0b | 95 | clear_bit(PHYE_SPINUP_HOLD, &phy->phy_events_pending); |
2908d778 JB |
96 | |
97 | phy->error = 0; | |
a01e70e5 | 98 | i->dft->lldd_control_phy(phy, PHY_FUNC_RELEASE_SPINUP_HOLD, NULL); |
2908d778 JB |
99 | } |
100 | ||
101 | /* ---------- Phy class registration ---------- */ | |
102 | ||
103 | int sas_register_phys(struct sas_ha_struct *sas_ha) | |
104 | { | |
105 | int i; | |
106 | ||
c4028958 | 107 | static const work_func_t sas_phy_event_fns[PHY_NUM_EVENTS] = { |
2908d778 JB |
108 | [PHYE_LOSS_OF_SIGNAL] = sas_phye_loss_of_signal, |
109 | [PHYE_OOB_DONE] = sas_phye_oob_done, | |
110 | [PHYE_OOB_ERROR] = sas_phye_oob_error, | |
111 | [PHYE_SPINUP_HOLD] = sas_phye_spinup_hold, | |
112 | }; | |
113 | ||
c4028958 | 114 | static const work_func_t sas_port_event_fns[PORT_NUM_EVENTS] = { |
2908d778 JB |
115 | [PORTE_BYTES_DMAED] = sas_porte_bytes_dmaed, |
116 | [PORTE_BROADCAST_RCVD] = sas_porte_broadcast_rcvd, | |
117 | [PORTE_LINK_RESET_ERR] = sas_porte_link_reset_err, | |
118 | [PORTE_TIMER_EVENT] = sas_porte_timer_event, | |
119 | [PORTE_HARD_RESET] = sas_porte_hard_reset, | |
120 | }; | |
121 | ||
122 | /* Now register the phys. */ | |
123 | for (i = 0; i < sas_ha->num_phys; i++) { | |
124 | int k; | |
125 | struct asd_sas_phy *phy = sas_ha->sas_phy[i]; | |
126 | ||
127 | phy->error = 0; | |
128 | INIT_LIST_HEAD(&phy->port_phy_el); | |
c4028958 DH |
129 | for (k = 0; k < PORT_NUM_EVENTS; k++) { |
130 | INIT_WORK(&phy->port_events[k].work, | |
131 | sas_port_event_fns[k]); | |
132 | phy->port_events[k].phy = phy; | |
133 | } | |
134 | ||
135 | for (k = 0; k < PHY_NUM_EVENTS; k++) { | |
136 | INIT_WORK(&phy->phy_events[k].work, | |
137 | sas_phy_event_fns[k]); | |
138 | phy->phy_events[k].phy = phy; | |
139 | } | |
2908d778 | 140 | |
2908d778 JB |
141 | phy->port = NULL; |
142 | phy->ha = sas_ha; | |
143 | spin_lock_init(&phy->frame_rcvd_lock); | |
144 | spin_lock_init(&phy->sas_prim_lock); | |
145 | phy->frame_rcvd_size = 0; | |
146 | ||
147 | phy->phy = sas_phy_alloc(&sas_ha->core.shost->shost_gendev, | |
148 | i); | |
149 | if (!phy->phy) | |
150 | return -ENOMEM; | |
151 | ||
152 | phy->phy->identify.initiator_port_protocols = | |
153 | phy->iproto; | |
154 | phy->phy->identify.target_port_protocols = phy->tproto; | |
155 | phy->phy->identify.sas_address = SAS_ADDR(sas_ha->sas_addr); | |
156 | phy->phy->identify.phy_identifier = i; | |
a01e70e5 JB |
157 | phy->phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN; |
158 | phy->phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN; | |
159 | phy->phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN; | |
160 | phy->phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN; | |
2908d778 JB |
161 | phy->phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN; |
162 | ||
163 | sas_phy_add(phy->phy); | |
164 | } | |
165 | ||
166 | return 0; | |
167 | } |