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 clear_bit(PHYE_LOSS_OF_SIGNAL, &phy->phy_events_pending); 40 phy->error = 0; 41 sas_deform_port(phy, 1); 42 } 43 44 static void sas_phye_oob_done(struct work_struct *work) 45 { 46 struct asd_sas_event *ev = 47 container_of(work, struct asd_sas_event, work); 48 struct asd_sas_phy *phy = ev->phy; 49 50 clear_bit(PHYE_OOB_DONE, &phy->phy_events_pending); 51 phy->error = 0; 52 } 53 54 static void sas_phye_oob_error(struct work_struct *work) 55 { 56 struct asd_sas_event *ev = 57 container_of(work, struct asd_sas_event, work); 58 struct asd_sas_phy *phy = ev->phy; 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 64 clear_bit(PHYE_OOB_ERROR, &phy->phy_events_pending); 65 66 sas_deform_port(phy, 1); 67 68 if (!port && phy->enabled && i->dft->lldd_control_phy) { 69 phy->error++; 70 switch (phy->error) { 71 case 1: 72 case 2: 73 i->dft->lldd_control_phy(phy, PHY_FUNC_HARD_RESET, 74 NULL); 75 break; 76 case 3: 77 default: 78 phy->error = 0; 79 phy->enabled = 0; 80 i->dft->lldd_control_phy(phy, PHY_FUNC_DISABLE, NULL); 81 break; 82 } 83 } 84 } 85 86 static void sas_phye_spinup_hold(struct work_struct *work) 87 { 88 struct asd_sas_event *ev = 89 container_of(work, struct asd_sas_event, work); 90 struct asd_sas_phy *phy = ev->phy; 91 struct sas_ha_struct *sas_ha = phy->ha; 92 struct sas_internal *i = 93 to_sas_internal(sas_ha->core.shost->transportt); 94 95 clear_bit(PHYE_SPINUP_HOLD, &phy->phy_events_pending); 96 97 phy->error = 0; 98 i->dft->lldd_control_phy(phy, PHY_FUNC_RELEASE_SPINUP_HOLD, NULL); 99 } 100 101 /* ---------- Phy class registration ---------- */ 102 103 int sas_register_phys(struct sas_ha_struct *sas_ha) 104 { 105 int i; 106 107 static const work_func_t sas_phy_event_fns[PHY_NUM_EVENTS] = { 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 }; 113 114 static const work_func_t sas_port_event_fns[PORT_NUM_EVENTS] = { 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); 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 } 140 141 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; 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; 161 phy->phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN; 162 163 sas_phy_add(phy->phy); 164 } 165 166 return 0; 167 } 168