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 33 static void sas_phye_loss_of_signal(struct work_struct *work) 34 { 35 struct asd_sas_event *ev = 36 container_of(work, struct asd_sas_event, work); 37 struct asd_sas_phy *phy = ev->phy; 38 39 sas_begin_event(PHYE_LOSS_OF_SIGNAL, &phy->ha->event_lock, 40 &phy->phy_events_pending); 41 phy->error = 0; 42 sas_deform_port(phy, 1); 43 } 44 45 static void sas_phye_oob_done(struct work_struct *work) 46 { 47 struct asd_sas_event *ev = 48 container_of(work, struct asd_sas_event, work); 49 struct asd_sas_phy *phy = ev->phy; 50 51 sas_begin_event(PHYE_OOB_DONE, &phy->ha->event_lock, 52 &phy->phy_events_pending); 53 phy->error = 0; 54 } 55 56 static void sas_phye_oob_error(struct work_struct *work) 57 { 58 struct asd_sas_event *ev = 59 container_of(work, struct asd_sas_event, work); 60 struct asd_sas_phy *phy = ev->phy; 61 struct sas_ha_struct *sas_ha = phy->ha; 62 struct asd_sas_port *port = phy->port; 63 struct sas_internal *i = 64 to_sas_internal(sas_ha->core.shost->transportt); 65 66 sas_begin_event(PHYE_OOB_ERROR, &phy->ha->event_lock, 67 &phy->phy_events_pending); 68 69 sas_deform_port(phy, 1); 70 71 if (!port && phy->enabled && i->dft->lldd_control_phy) { 72 phy->error++; 73 switch (phy->error) { 74 case 1: 75 case 2: 76 i->dft->lldd_control_phy(phy, PHY_FUNC_HARD_RESET, 77 NULL); 78 break; 79 case 3: 80 default: 81 phy->error = 0; 82 phy->enabled = 0; 83 i->dft->lldd_control_phy(phy, PHY_FUNC_DISABLE, NULL); 84 break; 85 } 86 } 87 } 88 89 static void sas_phye_spinup_hold(struct work_struct *work) 90 { 91 struct asd_sas_event *ev = 92 container_of(work, struct asd_sas_event, work); 93 struct asd_sas_phy *phy = ev->phy; 94 struct sas_ha_struct *sas_ha = phy->ha; 95 struct sas_internal *i = 96 to_sas_internal(sas_ha->core.shost->transportt); 97 98 sas_begin_event(PHYE_SPINUP_HOLD, &phy->ha->event_lock, 99 &phy->phy_events_pending); 100 101 phy->error = 0; 102 i->dft->lldd_control_phy(phy, PHY_FUNC_RELEASE_SPINUP_HOLD, NULL); 103 } 104 105 /* ---------- Phy class registration ---------- */ 106 107 int sas_register_phys(struct sas_ha_struct *sas_ha) 108 { 109 int i; 110 111 static const work_func_t sas_phy_event_fns[PHY_NUM_EVENTS] = { 112 [PHYE_LOSS_OF_SIGNAL] = sas_phye_loss_of_signal, 113 [PHYE_OOB_DONE] = sas_phye_oob_done, 114 [PHYE_OOB_ERROR] = sas_phye_oob_error, 115 [PHYE_SPINUP_HOLD] = sas_phye_spinup_hold, 116 }; 117 118 static const work_func_t sas_port_event_fns[PORT_NUM_EVENTS] = { 119 [PORTE_BYTES_DMAED] = sas_porte_bytes_dmaed, 120 [PORTE_BROADCAST_RCVD] = sas_porte_broadcast_rcvd, 121 [PORTE_LINK_RESET_ERR] = sas_porte_link_reset_err, 122 [PORTE_TIMER_EVENT] = sas_porte_timer_event, 123 [PORTE_HARD_RESET] = sas_porte_hard_reset, 124 }; 125 126 /* Now register the phys. */ 127 for (i = 0; i < sas_ha->num_phys; i++) { 128 int k; 129 struct asd_sas_phy *phy = sas_ha->sas_phy[i]; 130 131 phy->error = 0; 132 INIT_LIST_HEAD(&phy->port_phy_el); 133 for (k = 0; k < PORT_NUM_EVENTS; k++) { 134 INIT_WORK(&phy->port_events[k].work, 135 sas_port_event_fns[k]); 136 phy->port_events[k].phy = phy; 137 } 138 139 for (k = 0; k < PHY_NUM_EVENTS; k++) { 140 INIT_WORK(&phy->phy_events[k].work, 141 sas_phy_event_fns[k]); 142 phy->phy_events[k].phy = phy; 143 } 144 145 phy->port = NULL; 146 phy->ha = sas_ha; 147 spin_lock_init(&phy->frame_rcvd_lock); 148 spin_lock_init(&phy->sas_prim_lock); 149 phy->frame_rcvd_size = 0; 150 151 phy->phy = sas_phy_alloc(&sas_ha->core.shost->shost_gendev, 152 i); 153 if (!phy->phy) 154 return -ENOMEM; 155 156 phy->phy->identify.initiator_port_protocols = 157 phy->iproto; 158 phy->phy->identify.target_port_protocols = phy->tproto; 159 phy->phy->identify.sas_address = SAS_ADDR(sas_ha->sas_addr); 160 phy->phy->identify.phy_identifier = i; 161 phy->phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN; 162 phy->phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN; 163 phy->phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN; 164 phy->phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN; 165 phy->phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN; 166 167 sas_phy_add(phy->phy); 168 } 169 170 return 0; 171 } 172