--- /dev/null
+/*
+ * 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 =
+ container_of(work, struct asd_sas_event, work);
+ struct asd_sas_phy *phy = ev->phy;
+
+ sas_begin_event(PHYE_LOSS_OF_SIGNAL, &phy->ha->event_lock,
+ &phy->phy_events_pending);
+ phy->error = 0;
+ sas_deform_port(phy);
+}
+
+static void sas_phye_oob_done(struct work_struct *work)
+{
+ struct asd_sas_event *ev =
+ container_of(work, struct asd_sas_event, work);
+ struct asd_sas_phy *phy = ev->phy;
+
+ sas_begin_event(PHYE_OOB_DONE, &phy->ha->event_lock,
+ &phy->phy_events_pending);
+ phy->error = 0;
+}
+
+static void sas_phye_oob_error(struct work_struct *work)
+{
+ struct asd_sas_event *ev =
+ container_of(work, struct 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_begin_event(PHYE_OOB_ERROR, &phy->ha->event_lock,
+ &phy->phy_events_pending);
+
+ sas_deform_port(phy);
+
+ 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 =
+ container_of(work, struct 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);
+
+ sas_begin_event(PHYE_SPINUP_HOLD, &phy->ha->event_lock,
+ &phy->phy_events_pending);
+
+ phy->error = 0;
+ i->dft->lldd_control_phy(phy, PHY_FUNC_RELEASE_SPINUP_HOLD, NULL);
+}
+
+/* ---------- Phy class registration ---------- */
+
+int sas_register_phys(struct sas_ha_struct *sas_ha)
+{
+ int i;
+
+ static 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,
+ };
+
+ static const work_func_t sas_port_event_fns[PORT_NUM_EVENTS] = {
+ [PORTE_BYTES_DMAED] = sas_porte_bytes_dmaed,
+ [PORTE_BROADCAST_RCVD] = sas_porte_broadcast_rcvd,
+ [PORTE_LINK_RESET_ERR] = sas_porte_link_reset_err,
+ [PORTE_TIMER_EVENT] = sas_porte_timer_event,
+ [PORTE_HARD_RESET] = sas_porte_hard_reset,
+ };
+
+ /* Now register the phys. */
+ for (i = 0; i < sas_ha->num_phys; i++) {
+ int k;
+ struct asd_sas_phy *phy = sas_ha->sas_phy[i];
+
+ phy->error = 0;
+ INIT_LIST_HEAD(&phy->port_phy_el);
+ for (k = 0; k < PORT_NUM_EVENTS; k++) {
+ INIT_WORK(&phy->port_events[k].work,
+ sas_port_event_fns[k]);
+ phy->port_events[k].phy = phy;
+ }
+
+ for (k = 0; k < PHY_NUM_EVENTS; k++) {
+ INIT_WORK(&phy->phy_events[k].work,
+ sas_phy_event_fns[k]);
+ phy->phy_events[k].phy = phy;
+ }
+
+ 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;
+}
git://git.onelab.eu / linux-2.6.git / blobdiff