Signed-off-by: Luben Tuikov <luben_tuikov@xxxxxxxxxxx>
diff -X linux-2.6.13/Documentation/dontdiff -Naur linux-2.6.13-orig/drivers/scsi/sas-class/sas_phy.c linux-2.6.13/drivers/scsi/sas-class/sas_phy.c
--- linux-2.6.13-orig/drivers/scsi/sas-class/sas_phy.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.13/drivers/scsi/sas-class/sas_phy.c 2005-09-09 11:14:29.000000000 -0400
@@ -0,0 +1,307 @@
+/*
+ * Serial Attached SCSI (SAS) Phy class
+ *
+ * Copyright (C) 2005 Adaptec, Inc. All rights reserved.
+ * Copyright (C) 2005 Luben Tuikov <luben_tuikov@xxxxxxxxxxx>
+ *
+ * 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
+ *
+ * $Id: //depot/sas-class/sas_phy.c#37 $
+ */
+
+#include "sas_internal.h"
+
+/* ---------- Phy events ---------- */
+
+void sas_phye_loss_of_signal(struct sas_phy *phy)
+{
+ phy->error = 0;
+ sas_deform_port(phy);
+}
+
+void sas_phye_oob_done(struct sas_phy *phy)
+{
+ phy->error = 0;
+}
+
+void sas_phye_oob_error(struct sas_phy *phy)
+{
+ struct sas_ha_struct *sas_ha = phy->ha;
+ struct sas_port *port = phy->port;
+
+ sas_deform_port(phy);
+
+ if (!port && phy->enabled && sas_ha->lldd_control_phy) {
+ phy->error++;
+ switch (phy->error) {
+ case 1:
+ case 2:
+ sas_ha->lldd_control_phy(phy, PHY_FUNC_HARD_RESET);
+ break;
+ case 3:
+ default:
+ phy->error = 0;
+ phy->enabled = 0;
+ sas_ha->lldd_control_phy(phy, PHY_FUNC_DISABLE);
+ break;
+ }
+ }
+}
+
+void sas_phye_spinup_hold(struct sas_phy *phy)
+{
+ struct sas_ha_struct *sas_ha = phy->ha;
+
+ phy->error = 0;
+ sas_ha->lldd_control_phy(phy, PHY_FUNC_RELEASE_SPINUP_HOLD);
+}
+
+/* ---------- Phy attributes ---------- */
+
+static ssize_t sas_phy_id_show(struct sas_phy *phy, char *buf)
+{
+ return sprintf(buf, "%d\n", phy->id);
+}
+
+static ssize_t sas_phy_enabled_show(struct sas_phy *phy, char *buf)
+{
+ return sprintf(buf, "%d\n", phy->enabled);
+}
+
+static ssize_t sas_phy_enabled_store(struct sas_phy *phy, const char *buf,
+ size_t size)
+{
+ if (size > 0) {
+ if (buf[0] == '1')
+ phy->ha->lldd_control_phy(phy, PHY_FUNC_LINK_RESET);
+ }
+ return size;
+}
+
+static ssize_t sas_phy_class_show(struct sas_phy *phy, char *buf)
+{
+ if (!phy->enabled)
+ return 0;
+ return sas_show_class(phy->class, buf);
+}
+
+static ssize_t sas_phy_iproto_show(struct sas_phy *phy, char *page)
+{
+ if (!phy->enabled)
+ return 0;
+ return sas_show_proto(phy->iproto, page);
+}
+
+static ssize_t sas_phy_tproto_show(struct sas_phy *phy, char *page)
+{
+ if (!phy->enabled)
+ return 0;
+ return sas_show_proto(phy->tproto, page);
+}
+
+static ssize_t sas_phy_type_show(struct sas_phy *phy, char *buf)
+{
+ static const char *phy_type_str[] = {
+ [PHY_TYPE_PHYSICAL] = "physical",
+ [PHY_TYPE_VIRTUAL] = "virtual",
+ };
+ if (!phy->enabled)
+ return 0;
+ return sprintf(buf, "%s\n", phy_type_str[phy->type]);
+}
+
+static ssize_t sas_phy_role_show(struct sas_phy *phy, char *page)
+{
+ static const char *phy_role_str[] = {
+ [PHY_ROLE_NONE] = "none",
+ [PHY_ROLE_TARGET] = "target",
+ [PHY_ROLE_INITIATOR] = "initiator",
+ };
+ int v;
+ char *buf = page;
+
+ if (!phy->enabled)
+ return 0;
+
+ if (phy->role == PHY_ROLE_NONE)
+ return sprintf(buf, "%s\n", phy_role_str[PHY_ROLE_NONE]);
+
+ for (v = 1; v <= PHY_ROLE_INITIATOR; v <<= 1) {
+ if (v & phy->role) {
+ buf += sprintf(buf, "%s", phy_role_str[v]);
+ if (phy->role & ~((v<<1)-1))
+ buf += sprintf(buf, "|");
+ else
+ buf += sprintf(buf, "\n");
+ }
+ }
+ return buf-page;
+}
+
+static ssize_t sas_phy_linkrate_show(struct sas_phy *phy, char *buf)
+{
+ if (!phy->enabled)
+ return 0;
+ return sas_show_linkrate(phy->linkrate, buf);
+}
+
+static ssize_t sas_phy_addr_show(struct sas_phy *phy, char *buf)
+{
+ if (!phy->enabled)
+ return 0;
+ return sprintf(buf, "%llx\n", SAS_ADDR(phy->sas_addr));
+}
+
+static ssize_t sas_phy_oob_mode_show(struct sas_phy *phy, char *buf)
+{
+ if (!phy->enabled)
+ return 0;
+ return sas_show_oob_mode(phy->oob_mode, buf);
+}
+
+struct phy_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct sas_phy *phy, char *);
+ ssize_t (*store)(struct sas_phy *phy, const char *, size_t);
+};
+
+static struct phy_attribute phy_attrs[] = {
+ /* port is a symlink */
+ __ATTR(id, 0444, sas_phy_id_show, NULL),
+ __ATTR(enabled, 0644, sas_phy_enabled_show, sas_phy_enabled_store),
+ __ATTR(class, 0444, sas_phy_class_show, NULL),
+ __ATTR(iproto, 0444, sas_phy_iproto_show, NULL),
+ __ATTR(tproto, 0444, sas_phy_tproto_show, NULL),
+ __ATTR(type, 0444, sas_phy_type_show, NULL),
+ __ATTR(role, 0444, sas_phy_role_show, NULL),
+ __ATTR(linkrate, 0444, sas_phy_linkrate_show, NULL),
+ __ATTR(sas_addr, 0444, sas_phy_addr_show, NULL),
+ __ATTR(oob_mode, 0444, sas_phy_oob_mode_show, NULL),
+ __ATTR_NULL,
+};
+
+static struct attribute *def_attrs[ARRAY_SIZE(phy_attrs)];
+
+#define to_sas_phy(_obj) container_of(_obj, struct sas_phy, phy_kobj)
+#define to_phy_attr(_attr) container_of(_attr, struct phy_attribute, attr)
+
+static ssize_t phy_show_attr(struct kobject *kobj,
+ struct attribute *attr,
+ char *page)
+{
+ ssize_t ret = 0;
+ struct sas_phy *phy = to_sas_phy(kobj);
+ struct phy_attribute *phy_attr = to_phy_attr(attr);
+
+ if (phy_attr->show)
+ ret = phy_attr->show(phy, page);
+ return ret;
+}
+
+static ssize_t phy_store_attr(struct kobject *kobj,
+ struct attribute *attr,
+ const char *page, size_t size)
+{
+ ssize_t ret = 0;
+ struct sas_phy *phy = to_sas_phy(kobj);
+ struct phy_attribute *phy_attr = to_phy_attr(attr);
+
+ if (phy_attr->store)
+ ret = phy_attr->store(phy, page, size);
+ return ret;
+}
+
+static struct sysfs_ops phy_sysfs_ops = {
+ .show = phy_show_attr,
+ .store = phy_store_attr,
+};
+
+static struct kobj_type phy_ktype = {
+ .sysfs_ops = &phy_sysfs_ops,
+ .default_attrs = def_attrs,
+};
+
+/* ---------- Phy class registration ---------- */
+
+int sas_register_phys(struct sas_ha_struct *sas_ha)
+{
+ int i, error;
+
+ for (i = 0; i < ARRAY_SIZE(def_attrs)-1; i++)
+ def_attrs[i] = &phy_attrs[i].attr;
+ def_attrs[i] = NULL;
+
+ /* make sas/ha/phys/ appear */
+ kobject_set_name(&sas_ha->phy_kset.kobj, "%s", "phys");
+ sas_ha->phy_kset.kobj.kset = &sas_ha->ha_kset; /* parent */
+ /* we do not inherit the type of the parent */
+ sas_ha->phy_kset.kobj.ktype = NULL;
+ sas_ha->phy_kset.ktype = &phy_ktype;
+ error = kset_register(&sas_ha->phy_kset);
+ if (error)
+ return error;
+
+ /* Now register the phys. */
+ for (i = 0; i < sas_ha->num_phys; i++) {
+ int k;
+ struct sas_phy *phy = sas_ha->sas_phy[i];
+
+ phy->error = 0;
+ INIT_LIST_HEAD(&phy->port_phy_el);
+ INIT_LIST_HEAD(&phy->port_event_list);
+ INIT_LIST_HEAD(&phy->phy_event_list);
+ for (k = 0; k < PORT_NUM_EVENTS; k++) {
+ struct sas_event *ev = &phy->port_events[k];
+ ev->event = k;
+ INIT_LIST_HEAD(&ev->el);
+ }
+ for (k = 0; k < PHY_NUM_EVENTS; k++) {
+ struct sas_event *ev = &phy->phy_events[k];
+ ev->event = k;
+ INIT_LIST_HEAD(&ev->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;
+
+ kobject_set_name(&phy->phy_kobj, "%d", i);
+ phy->phy_kobj.kset = &sas_ha->phy_kset; /* parent */
+ phy->phy_kobj.ktype = sas_ha->phy_kset.ktype;
+ error = kobject_register(&phy->phy_kobj);
+ if (error)
+ goto unroll;
+ }
+
+ return 0;
+unroll:
+ for (i--; i >= 0; i--)
+ kobject_unregister(&sas_ha->sas_phy[i]->phy_kobj);
+
+ return error;
+}
+
+void sas_unregister_phys(struct sas_ha_struct *sas_ha)
+{
+ int i;
+
+ for (i = 0; i < sas_ha->num_phys; i++)
+ kobject_unregister(&sas_ha->sas_phy[i]->phy_kobj);
+
+ kset_unregister(&sas_ha->phy_kset);
+}
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