/*
- * Copyright (C) 2005 Dell Inc.
+ * Copyright (C) 2005-2006 Dell Inc.
* Released under GPL v2.
*
* Serial Attached SCSI (SAS) transport class.
#include <linux/init.h>
#include <linux/module.h>
+#include <linux/jiffies.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_sas.h>
-
-#define SAS_HOST_ATTRS 0
-#define SAS_PORT_ATTRS 17
-#define SAS_RPORT_ATTRS 5
-
-struct sas_internal {
- struct scsi_transport_template t;
- struct sas_function_template *f;
-
- struct class_device_attribute private_host_attrs[SAS_HOST_ATTRS];
- struct class_device_attribute private_phy_attrs[SAS_PORT_ATTRS];
- struct class_device_attribute private_rphy_attrs[SAS_RPORT_ATTRS];
-
- struct transport_container phy_attr_cont;
- struct transport_container rphy_attr_cont;
-
- /*
- * The array of null terminated pointers to attributes
- * needed by scsi_sysfs.c
- */
- struct class_device_attribute *host_attrs[SAS_HOST_ATTRS + 1];
- struct class_device_attribute *phy_attrs[SAS_PORT_ATTRS + 1];
- struct class_device_attribute *rphy_attrs[SAS_RPORT_ATTRS + 1];
-};
-#define to_sas_internal(tmpl) container_of(tmpl, struct sas_internal, t)
-
+#include "scsi_sas_internal.h"
struct sas_host_attrs {
struct list_head rphy_list;
struct mutex lock;
u32 next_target_id;
+ u32 next_expander_id;
+ int next_port_id;
};
#define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data)
ssize_t len = 0; \
int i; \
\
- for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \
+ for (i = 0; i < ARRAY_SIZE(table); i++) { \
if (table[i].value & table_key) { \
len += sprintf(buf + len, "%s%s", \
prefix, table[i].name); \
return len; \
}
+#define sas_bitfield_name_set(title, table) \
+static ssize_t \
+set_sas_##title##_names(u32 *table_key, const char *buf) \
+{ \
+ ssize_t len = 0; \
+ int i; \
+ \
+ for (i = 0; i < ARRAY_SIZE(table); i++) { \
+ len = strlen(table[i].name); \
+ if (strncmp(buf, table[i].name, len) == 0 && \
+ (buf[len] == '\n' || buf[len] == '\0')) { \
+ *table_key = table[i].value; \
+ return 0; \
+ } \
+ } \
+ return -EINVAL; \
+}
+
#define sas_bitfield_name_search(title, table) \
static ssize_t \
get_sas_##title##_names(u32 table_key, char *buf) \
ssize_t len = 0; \
int i; \
\
- for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \
+ for (i = 0; i < ARRAY_SIZE(table); i++) { \
if (table[i].value == table_key) { \
len += sprintf(buf + len, "%s", \
table[i].name); \
{ SAS_SATA_SPINUP_HOLD, "Spin-up hold" },
{ SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" },
{ SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" },
+ { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" },
};
sas_bitfield_name_search(linkspeed, sas_linkspeed_names)
-
+sas_bitfield_name_set(linkspeed, sas_linkspeed_names)
/*
* SAS host attributes
INIT_LIST_HEAD(&sas_host->rphy_list);
mutex_init(&sas_host->lock);
sas_host->next_target_id = 0;
+ sas_host->next_expander_id = 0;
+ sas_host->next_port_id = 0;
return 0;
}
static int do_sas_phy_delete(struct device *dev, void *data)
{
- if (scsi_is_sas_phy(dev))
+ int pass = (int)(unsigned long)data;
+
+ if (pass == 0 && scsi_is_sas_port(dev))
+ sas_port_delete(dev_to_sas_port(dev));
+ else if (pass == 1 && scsi_is_sas_phy(dev))
sas_phy_delete(dev_to_phy(dev));
return 0;
}
+/**
+ * sas_remove_children -- tear down a devices SAS data structures
+ * @dev: device belonging to the sas object
+ *
+ * Removes all SAS PHYs and remote PHYs for a given object
+ */
+void sas_remove_children(struct device *dev)
+{
+ device_for_each_child(dev, (void *)0, do_sas_phy_delete);
+ device_for_each_child(dev, (void *)1, do_sas_phy_delete);
+}
+EXPORT_SYMBOL(sas_remove_children);
+
/**
* sas_remove_host -- tear down a Scsi_Host's SAS data structures
* @shost: Scsi Host that is torn down
*/
void sas_remove_host(struct Scsi_Host *shost)
{
- device_for_each_child(&shost->shost_gendev, NULL, do_sas_phy_delete);
+ sas_remove_children(&shost->shost_gendev);
}
EXPORT_SYMBOL(sas_remove_host);
/*
- * SAS Port attributes
+ * SAS Phy attributes
*/
#define sas_phy_show_simple(field, name, format_string, cast) \
return get_sas_linkspeed_names(phy->field, buf); \
}
+/* Fudge to tell if we're minimum or maximum */
+#define sas_phy_store_linkspeed(field) \
+static ssize_t \
+store_sas_phy_##field(struct class_device *cdev, const char *buf, \
+ size_t count) \
+{ \
+ struct sas_phy *phy = transport_class_to_phy(cdev); \
+ struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
+ struct sas_internal *i = to_sas_internal(shost->transportt); \
+ u32 value; \
+ struct sas_phy_linkrates rates = {0}; \
+ int error; \
+ \
+ error = set_sas_linkspeed_names(&value, buf); \
+ if (error) \
+ return error; \
+ rates.field = value; \
+ error = i->f->set_phy_speed(phy, &rates); \
+ \
+ return error ? error : count; \
+}
+
+#define sas_phy_linkspeed_rw_attr(field) \
+ sas_phy_show_linkspeed(field) \
+ sas_phy_store_linkspeed(field) \
+static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \
+ store_sas_phy_##field)
+
#define sas_phy_linkspeed_attr(field) \
sas_phy_show_linkspeed(field) \
static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
+
#define sas_phy_show_linkerror(field) \
static ssize_t \
show_sas_phy_##field(struct class_device *cdev, char *buf) \
struct sas_internal *i = to_sas_internal(shost->transportt); \
int error; \
\
- if (!phy->local_attached) \
- return -EINVAL; \
- \
- error = i->f->get_linkerrors(phy); \
+ error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \
if (error) \
return error; \
return snprintf(buf, 20, "%u\n", phy->field); \
struct sas_internal *i = to_sas_internal(shost->transportt);
int error;
- if (!phy->local_attached)
- return -EINVAL;
-
error = i->f->phy_reset(phy, hard_reset);
if (error)
return error;
sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
unsigned long long);
sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
-sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", u8);
+//sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int);
sas_phy_linkspeed_attr(negotiated_linkrate);
sas_phy_linkspeed_attr(minimum_linkrate_hw);
-sas_phy_linkspeed_attr(minimum_linkrate);
+sas_phy_linkspeed_rw_attr(minimum_linkrate);
sas_phy_linkspeed_attr(maximum_linkrate_hw);
-sas_phy_linkspeed_attr(maximum_linkrate);
+sas_phy_linkspeed_rw_attr(maximum_linkrate);
sas_phy_linkerror_attr(invalid_dword_count);
sas_phy_linkerror_attr(running_disparity_error_count);
sas_phy_linkerror_attr(loss_of_dword_sync_count);
struct Scsi_Host *shost = dev_to_shost(parent);
struct sas_phy *phy;
- phy = kmalloc(sizeof(*phy), GFP_KERNEL);
+ phy = kzalloc(sizeof(*phy), GFP_KERNEL);
if (!phy)
return NULL;
- memset(phy, 0, sizeof(*phy));
-
- get_device(parent);
phy->number = number;
device_initialize(&phy->dev);
phy->dev.parent = get_device(parent);
phy->dev.release = sas_phy_release;
- sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number);
+ INIT_LIST_HEAD(&phy->port_siblings);
+ if (scsi_is_sas_expander_device(parent)) {
+ struct sas_rphy *rphy = dev_to_rphy(parent);
+ sprintf(phy->dev.bus_id, "phy-%d:%d:%d", shost->host_no,
+ rphy->scsi_target_id, number);
+ } else
+ sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number);
transport_setup_device(&phy->dev);
void sas_phy_free(struct sas_phy *phy)
{
transport_destroy_device(&phy->dev);
- put_device(phy->dev.parent);
- put_device(phy->dev.parent);
- put_device(phy->dev.parent);
- kfree(phy);
+ put_device(&phy->dev);
}
EXPORT_SYMBOL(sas_phy_free);
{
struct device *dev = &phy->dev;
- if (phy->rphy)
- sas_rphy_delete(phy->rphy);
+ /* this happens if the phy is still part of a port when deleted */
+ BUG_ON(!list_empty(&phy->port_siblings));
transport_remove_device(dev);
device_del(dev);
transport_destroy_device(dev);
- put_device(dev->parent);
+ put_device(dev);
}
EXPORT_SYMBOL(sas_phy_delete);
}
EXPORT_SYMBOL(scsi_is_sas_phy);
+/*
+ * SAS Port attributes
+ */
+#define sas_port_show_simple(field, name, format_string, cast) \
+static ssize_t \
+show_sas_port_##name(struct class_device *cdev, char *buf) \
+{ \
+ struct sas_port *port = transport_class_to_sas_port(cdev); \
+ \
+ return snprintf(buf, 20, format_string, cast port->field); \
+}
+
+#define sas_port_simple_attr(field, name, format_string, type) \
+ sas_port_show_simple(field, name, format_string, (type)) \
+static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL)
+
+sas_port_simple_attr(num_phys, num_phys, "%d\n", int);
+
+static DECLARE_TRANSPORT_CLASS(sas_port_class,
+ "sas_port", NULL, NULL, NULL);
+
+static int sas_port_match(struct attribute_container *cont, struct device *dev)
+{
+ struct Scsi_Host *shost;
+ struct sas_internal *i;
+
+ if (!scsi_is_sas_port(dev))
+ return 0;
+ shost = dev_to_shost(dev->parent);
+
+ if (!shost->transportt)
+ return 0;
+ if (shost->transportt->host_attrs.ac.class !=
+ &sas_host_class.class)
+ return 0;
+
+ i = to_sas_internal(shost->transportt);
+ return &i->port_attr_cont.ac == cont;
+}
+
+
+static void sas_port_release(struct device *dev)
+{
+ struct sas_port *port = dev_to_sas_port(dev);
+
+ BUG_ON(!list_empty(&port->phy_list));
+
+ put_device(dev->parent);
+ kfree(port);
+}
+
+static void sas_port_create_link(struct sas_port *port,
+ struct sas_phy *phy)
+{
+ sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, phy->dev.bus_id);
+ sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port");
+}
+
+static void sas_port_delete_link(struct sas_port *port,
+ struct sas_phy *phy)
+{
+ sysfs_remove_link(&port->dev.kobj, phy->dev.bus_id);
+ sysfs_remove_link(&phy->dev.kobj, "port");
+}
+
+/** sas_port_alloc - allocate and initialize a SAS port structure
+ *
+ * @parent: parent device
+ * @port_id: port number
+ *
+ * Allocates a SAS port structure. It will be added to the device tree
+ * below the device specified by @parent which must be either a Scsi_Host
+ * or a sas_expander_device.
+ *
+ * Returns %NULL on error
+ */
+struct sas_port *sas_port_alloc(struct device *parent, int port_id)
+{
+ struct Scsi_Host *shost = dev_to_shost(parent);
+ struct sas_port *port;
+
+ port = kzalloc(sizeof(*port), GFP_KERNEL);
+ if (!port)
+ return NULL;
+
+ port->port_identifier = port_id;
+
+ device_initialize(&port->dev);
+
+ port->dev.parent = get_device(parent);
+ port->dev.release = sas_port_release;
+
+ mutex_init(&port->phy_list_mutex);
+ INIT_LIST_HEAD(&port->phy_list);
+
+ if (scsi_is_sas_expander_device(parent)) {
+ struct sas_rphy *rphy = dev_to_rphy(parent);
+ sprintf(port->dev.bus_id, "port-%d:%d:%d", shost->host_no,
+ rphy->scsi_target_id, port->port_identifier);
+ } else
+ sprintf(port->dev.bus_id, "port-%d:%d", shost->host_no,
+ port->port_identifier);
+
+ transport_setup_device(&port->dev);
+
+ return port;
+}
+EXPORT_SYMBOL(sas_port_alloc);
+
+/** sas_port_alloc_num - allocate and initialize a SAS port structure
+ *
+ * @parent: parent device
+ *
+ * Allocates a SAS port structure and a number to go with it. This
+ * interface is really for adapters where the port number has no
+ * meansing, so the sas class should manage them. It will be added to
+ * the device tree below the device specified by @parent which must be
+ * either a Scsi_Host or a sas_expander_device.
+ *
+ * Returns %NULL on error
+ */
+struct sas_port *sas_port_alloc_num(struct device *parent)
+{
+ int index;
+ struct Scsi_Host *shost = dev_to_shost(parent);
+ struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
+
+ /* FIXME: use idr for this eventually */
+ mutex_lock(&sas_host->lock);
+ if (scsi_is_sas_expander_device(parent)) {
+ struct sas_rphy *rphy = dev_to_rphy(parent);
+ struct sas_expander_device *exp = rphy_to_expander_device(rphy);
+
+ index = exp->next_port_id++;
+ } else
+ index = sas_host->next_port_id++;
+ mutex_unlock(&sas_host->lock);
+ return sas_port_alloc(parent, index);
+}
+EXPORT_SYMBOL(sas_port_alloc_num);
+
+/**
+ * sas_port_add - add a SAS port to the device hierarchy
+ *
+ * @port: port to be added
+ *
+ * publishes a port to the rest of the system
+ */
+int sas_port_add(struct sas_port *port)
+{
+ int error;
+
+ /* No phys should be added until this is made visible */
+ BUG_ON(!list_empty(&port->phy_list));
+
+ error = device_add(&port->dev);
+
+ if (error)
+ return error;
+
+ transport_add_device(&port->dev);
+ transport_configure_device(&port->dev);
+
+ return 0;
+}
+EXPORT_SYMBOL(sas_port_add);
+
+/**
+ * sas_port_free -- free a SAS PORT
+ * @port: SAS PORT to free
+ *
+ * Frees the specified SAS PORT.
+ *
+ * Note:
+ * This function must only be called on a PORT that has not
+ * sucessfully been added using sas_port_add().
+ */
+void sas_port_free(struct sas_port *port)
+{
+ transport_destroy_device(&port->dev);
+ put_device(&port->dev);
+}
+EXPORT_SYMBOL(sas_port_free);
+
+/**
+ * sas_port_delete -- remove SAS PORT
+ * @port: SAS PORT to remove
+ *
+ * Removes the specified SAS PORT. If the SAS PORT has an
+ * associated phys, unlink them from the port as well.
+ */
+void sas_port_delete(struct sas_port *port)
+{
+ struct device *dev = &port->dev;
+ struct sas_phy *phy, *tmp_phy;
+
+ if (port->rphy) {
+ sas_rphy_delete(port->rphy);
+ port->rphy = NULL;
+ }
+
+ mutex_lock(&port->phy_list_mutex);
+ list_for_each_entry_safe(phy, tmp_phy, &port->phy_list,
+ port_siblings) {
+ sas_port_delete_link(port, phy);
+ list_del_init(&phy->port_siblings);
+ }
+ mutex_unlock(&port->phy_list_mutex);
+
+ if (port->is_backlink) {
+ struct device *parent = port->dev.parent;
+
+ sysfs_remove_link(&port->dev.kobj, parent->bus_id);
+ port->is_backlink = 0;
+ }
+
+ transport_remove_device(dev);
+ device_del(dev);
+ transport_destroy_device(dev);
+ put_device(dev);
+}
+EXPORT_SYMBOL(sas_port_delete);
+
+/**
+ * scsi_is_sas_port -- check if a struct device represents a SAS port
+ * @dev: device to check
+ *
+ * Returns:
+ * %1 if the device represents a SAS Port, %0 else
+ */
+int scsi_is_sas_port(const struct device *dev)
+{
+ return dev->release == sas_port_release;
+}
+EXPORT_SYMBOL(scsi_is_sas_port);
+
+/**
+ * sas_port_add_phy - add another phy to a port to form a wide port
+ * @port: port to add the phy to
+ * @phy: phy to add
+ *
+ * When a port is initially created, it is empty (has no phys). All
+ * ports must have at least one phy to operated, and all wide ports
+ * must have at least two. The current code makes no difference
+ * between ports and wide ports, but the only object that can be
+ * connected to a remote device is a port, so ports must be formed on
+ * all devices with phys if they're connected to anything.
+ */
+void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy)
+{
+ mutex_lock(&port->phy_list_mutex);
+ if (unlikely(!list_empty(&phy->port_siblings))) {
+ /* make sure we're already on this port */
+ struct sas_phy *tmp;
+
+ list_for_each_entry(tmp, &port->phy_list, port_siblings)
+ if (tmp == phy)
+ break;
+ /* If this trips, you added a phy that was already
+ * part of a different port */
+ if (unlikely(tmp != phy)) {
+ dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", phy->dev.bus_id);
+ BUG();
+ }
+ } else {
+ sas_port_create_link(port, phy);
+ list_add_tail(&phy->port_siblings, &port->phy_list);
+ port->num_phys++;
+ }
+ mutex_unlock(&port->phy_list_mutex);
+}
+EXPORT_SYMBOL(sas_port_add_phy);
+
+/**
+ * sas_port_delete_phy - remove a phy from a port or wide port
+ * @port: port to remove the phy from
+ * @phy: phy to remove
+ *
+ * This operation is used for tearing down ports again. It must be
+ * done to every port or wide port before calling sas_port_delete.
+ */
+void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy)
+{
+ mutex_lock(&port->phy_list_mutex);
+ sas_port_delete_link(port, phy);
+ list_del_init(&phy->port_siblings);
+ port->num_phys--;
+ mutex_unlock(&port->phy_list_mutex);
+}
+EXPORT_SYMBOL(sas_port_delete_phy);
+
+void sas_port_mark_backlink(struct sas_port *port)
+{
+ struct device *parent = port->dev.parent->parent->parent;
+
+ if (port->is_backlink)
+ return;
+ port->is_backlink = 1;
+ sysfs_create_link(&port->dev.kobj, &parent->kobj,
+ parent->bus_id);
+
+}
+EXPORT_SYMBOL(sas_port_mark_backlink);
+
/*
* SAS remote PHY attributes.
*/
static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO,
show_sas_rphy_device_type, NULL);
+static ssize_t
+show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf)
+{
+ struct sas_rphy *rphy = transport_class_to_rphy(cdev);
+ struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
+ struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
+ struct sas_internal *i = to_sas_internal(shost->transportt);
+ u64 identifier;
+ int error;
+
+ /*
+ * Only devices behind an expander are supported, because the
+ * enclosure identifier is a SMP feature.
+ */
+ if (scsi_is_sas_phy_local(phy))
+ return -EINVAL;
+
+ error = i->f->get_enclosure_identifier(rphy, &identifier);
+ if (error)
+ return error;
+ return sprintf(buf, "0x%llx\n", (unsigned long long)identifier);
+}
+
+static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO,
+ show_sas_rphy_enclosure_identifier, NULL);
+
+static ssize_t
+show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf)
+{
+ struct sas_rphy *rphy = transport_class_to_rphy(cdev);
+ struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
+ struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
+ struct sas_internal *i = to_sas_internal(shost->transportt);
+ int val;
+
+ if (scsi_is_sas_phy_local(phy))
+ return -EINVAL;
+
+ val = i->f->get_bay_identifier(rphy);
+ if (val < 0)
+ return val;
+ return sprintf(buf, "%d\n", val);
+}
+
+static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO,
+ show_sas_rphy_bay_identifier, NULL);
+
sas_rphy_protocol_attr(identify.initiator_port_protocols,
initiator_port_protocols);
sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols);
unsigned long long);
sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
+/* only need 8 bytes of data plus header (4 or 8) */
+#define BUF_SIZE 64
+
+int sas_read_port_mode_page(struct scsi_device *sdev)
+{
+ char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata;
+ struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target);
+ struct sas_end_device *rdev;
+ struct scsi_mode_data mode_data;
+ int res, error;
+
+ BUG_ON(rphy->identify.device_type != SAS_END_DEVICE);
+
+ rdev = rphy_to_end_device(rphy);
+
+ if (!buffer)
+ return -ENOMEM;
+
+ res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3,
+ &mode_data, NULL);
+
+ error = -EINVAL;
+ if (!scsi_status_is_good(res))
+ goto out;
+
+ msdata = buffer + mode_data.header_length +
+ mode_data.block_descriptor_length;
+
+ if (msdata - buffer > BUF_SIZE - 8)
+ goto out;
+
+ error = 0;
+
+ rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0;
+ rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5];
+ rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7];
+
+ out:
+ kfree(buffer);
+ return error;
+}
+EXPORT_SYMBOL(sas_read_port_mode_page);
+
+static DECLARE_TRANSPORT_CLASS(sas_end_dev_class,
+ "sas_end_device", NULL, NULL, NULL);
+
+#define sas_end_dev_show_simple(field, name, format_string, cast) \
+static ssize_t \
+show_sas_end_dev_##name(struct class_device *cdev, char *buf) \
+{ \
+ struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
+ struct sas_end_device *rdev = rphy_to_end_device(rphy); \
+ \
+ return snprintf(buf, 20, format_string, cast rdev->field); \
+}
+
+#define sas_end_dev_simple_attr(field, name, format_string, type) \
+ sas_end_dev_show_simple(field, name, format_string, (type)) \
+static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \
+ show_sas_end_dev_##name, NULL)
+
+sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int);
+sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout,
+ "%d\n", int);
+sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout,
+ "%d\n", int);
+
+static DECLARE_TRANSPORT_CLASS(sas_expander_class,
+ "sas_expander", NULL, NULL, NULL);
+
+#define sas_expander_show_simple(field, name, format_string, cast) \
+static ssize_t \
+show_sas_expander_##name(struct class_device *cdev, char *buf) \
+{ \
+ struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
+ struct sas_expander_device *edev = rphy_to_expander_device(rphy); \
+ \
+ return snprintf(buf, 20, format_string, cast edev->field); \
+}
+
+#define sas_expander_simple_attr(field, name, format_string, type) \
+ sas_expander_show_simple(field, name, format_string, (type)) \
+static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO, \
+ show_sas_expander_##name, NULL)
+
+sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *);
+sas_expander_simple_attr(product_id, product_id, "%s\n", char *);
+sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *);
+sas_expander_simple_attr(component_vendor_id, component_vendor_id,
+ "%s\n", char *);
+sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int);
+sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n",
+ unsigned int);
+sas_expander_simple_attr(level, level, "%d\n", int);
+
static DECLARE_TRANSPORT_CLASS(sas_rphy_class,
- "sas_rphy", NULL, NULL, NULL);
+ "sas_device", NULL, NULL, NULL);
static int sas_rphy_match(struct attribute_container *cont, struct device *dev)
{
return &i->rphy_attr_cont.ac == cont;
}
-static void sas_rphy_release(struct device *dev)
+static int sas_end_dev_match(struct attribute_container *cont,
+ struct device *dev)
+{
+ struct Scsi_Host *shost;
+ struct sas_internal *i;
+ struct sas_rphy *rphy;
+
+ if (!scsi_is_sas_rphy(dev))
+ return 0;
+ shost = dev_to_shost(dev->parent->parent);
+ rphy = dev_to_rphy(dev);
+
+ if (!shost->transportt)
+ return 0;
+ if (shost->transportt->host_attrs.ac.class !=
+ &sas_host_class.class)
+ return 0;
+
+ i = to_sas_internal(shost->transportt);
+ return &i->end_dev_attr_cont.ac == cont &&
+ rphy->identify.device_type == SAS_END_DEVICE;
+}
+
+static int sas_expander_match(struct attribute_container *cont,
+ struct device *dev)
+{
+ struct Scsi_Host *shost;
+ struct sas_internal *i;
+ struct sas_rphy *rphy;
+
+ if (!scsi_is_sas_rphy(dev))
+ return 0;
+ shost = dev_to_shost(dev->parent->parent);
+ rphy = dev_to_rphy(dev);
+
+ if (!shost->transportt)
+ return 0;
+ if (shost->transportt->host_attrs.ac.class !=
+ &sas_host_class.class)
+ return 0;
+
+ i = to_sas_internal(shost->transportt);
+ return &i->expander_attr_cont.ac == cont &&
+ (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE ||
+ rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE);
+}
+
+static void sas_expander_release(struct device *dev)
{
struct sas_rphy *rphy = dev_to_rphy(dev);
+ struct sas_expander_device *edev = rphy_to_expander_device(rphy);
put_device(dev->parent);
- kfree(rphy);
+ kfree(edev);
+}
+
+static void sas_end_device_release(struct device *dev)
+{
+ struct sas_rphy *rphy = dev_to_rphy(dev);
+ struct sas_end_device *edev = rphy_to_end_device(rphy);
+
+ put_device(dev->parent);
+ kfree(edev);
+}
+
+/**
+ * sas_rphy_initialize - common rphy intialization
+ * @rphy: rphy to initialise
+ *
+ * Used by both sas_end_device_alloc() and sas_expander_alloc() to
+ * initialise the common rphy component of each.
+ */
+static void sas_rphy_initialize(struct sas_rphy *rphy)
+{
+ INIT_LIST_HEAD(&rphy->list);
}
/**
- * sas_rphy_alloc -- allocates and initialize a SAS remote PHY structure
- * @parent: SAS PHY this remote PHY is conneted to
+ * sas_end_device_alloc - allocate an rphy for an end device
*
* Allocates an SAS remote PHY structure, connected to @parent.
*
* Returns:
* SAS PHY allocated or %NULL if the allocation failed.
*/
-struct sas_rphy *sas_rphy_alloc(struct sas_phy *parent)
+struct sas_rphy *sas_end_device_alloc(struct sas_port *parent)
{
struct Scsi_Host *shost = dev_to_shost(&parent->dev);
- struct sas_rphy *rphy;
+ struct sas_end_device *rdev;
- rphy = kmalloc(sizeof(*rphy), GFP_KERNEL);
- if (!rphy) {
- put_device(&parent->dev);
+ rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
+ if (!rdev) {
return NULL;
}
- memset(rphy, 0, sizeof(*rphy));
- device_initialize(&rphy->dev);
- rphy->dev.parent = get_device(&parent->dev);
- rphy->dev.release = sas_rphy_release;
- sprintf(rphy->dev.bus_id, "rphy-%d:%d-%d",
- shost->host_no, parent->port_identifier, parent->number);
- transport_setup_device(&rphy->dev);
+ device_initialize(&rdev->rphy.dev);
+ rdev->rphy.dev.parent = get_device(&parent->dev);
+ rdev->rphy.dev.release = sas_end_device_release;
+ if (scsi_is_sas_expander_device(parent->dev.parent)) {
+ struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent);
+ sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d:%d",
+ shost->host_no, rphy->scsi_target_id, parent->port_identifier);
+ } else
+ sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d",
+ shost->host_no, parent->port_identifier);
+ rdev->rphy.identify.device_type = SAS_END_DEVICE;
+ sas_rphy_initialize(&rdev->rphy);
+ transport_setup_device(&rdev->rphy.dev);
+
+ return &rdev->rphy;
+}
+EXPORT_SYMBOL(sas_end_device_alloc);
- return rphy;
+/**
+ * sas_expander_alloc - allocate an rphy for an end device
+ *
+ * Allocates an SAS remote PHY structure, connected to @parent.
+ *
+ * Returns:
+ * SAS PHY allocated or %NULL if the allocation failed.
+ */
+struct sas_rphy *sas_expander_alloc(struct sas_port *parent,
+ enum sas_device_type type)
+{
+ struct Scsi_Host *shost = dev_to_shost(&parent->dev);
+ struct sas_expander_device *rdev;
+ struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
+
+ BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE &&
+ type != SAS_FANOUT_EXPANDER_DEVICE);
+
+ rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
+ if (!rdev) {
+ return NULL;
+ }
+
+ device_initialize(&rdev->rphy.dev);
+ rdev->rphy.dev.parent = get_device(&parent->dev);
+ rdev->rphy.dev.release = sas_expander_release;
+ mutex_lock(&sas_host->lock);
+ rdev->rphy.scsi_target_id = sas_host->next_expander_id++;
+ mutex_unlock(&sas_host->lock);
+ sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d",
+ shost->host_no, rdev->rphy.scsi_target_id);
+ rdev->rphy.identify.device_type = type;
+ sas_rphy_initialize(&rdev->rphy);
+ transport_setup_device(&rdev->rphy.dev);
+
+ return &rdev->rphy;
}
-EXPORT_SYMBOL(sas_rphy_alloc);
+EXPORT_SYMBOL(sas_expander_alloc);
/**
* sas_rphy_add -- add a SAS remote PHY to the device hierachy
*/
int sas_rphy_add(struct sas_rphy *rphy)
{
- struct sas_phy *parent = dev_to_phy(rphy->dev.parent);
+ struct sas_port *parent = dev_to_sas_port(rphy->dev.parent);
struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
struct sas_identify *identify = &rphy->identify;
(identify->target_port_protocols &
(SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA)))
rphy->scsi_target_id = sas_host->next_target_id++;
- else
+ else if (identify->device_type == SAS_END_DEVICE)
rphy->scsi_target_id = -1;
mutex_unlock(&sas_host->lock);
- if (rphy->scsi_target_id != -1) {
- scsi_scan_target(&rphy->dev, parent->port_identifier,
+ if (identify->device_type == SAS_END_DEVICE &&
+ rphy->scsi_target_id != -1) {
+ scsi_scan_target(&rphy->dev, 0,
rphy->scsi_target_id, ~0, 0);
}
*/
void sas_rphy_free(struct sas_rphy *rphy)
{
+ struct device *dev = &rphy->dev;
struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
list_del(&rphy->list);
mutex_unlock(&sas_host->lock);
- transport_destroy_device(&rphy->dev);
- put_device(rphy->dev.parent);
- put_device(rphy->dev.parent);
- put_device(rphy->dev.parent);
- kfree(rphy);
+ transport_destroy_device(dev);
+
+ put_device(dev);
}
EXPORT_SYMBOL(sas_rphy_free);
sas_rphy_delete(struct sas_rphy *rphy)
{
struct device *dev = &rphy->dev;
- struct sas_phy *parent = dev_to_phy(dev->parent);
+ struct sas_port *parent = dev_to_sas_port(dev->parent);
struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
break;
case SAS_EDGE_EXPANDER_DEVICE:
case SAS_FANOUT_EXPANDER_DEVICE:
- device_for_each_child(dev, NULL, do_sas_phy_delete);
+ sas_remove_children(dev);
break;
default:
break;
parent->rphy = NULL;
- put_device(&parent->dev);
+ put_device(dev);
}
EXPORT_SYMBOL(sas_rphy_delete);
*/
int scsi_is_sas_rphy(const struct device *dev)
{
- return dev->release == sas_rphy_release;
+ return dev->release == sas_end_device_release ||
+ dev->release == sas_expander_release;
}
EXPORT_SYMBOL(scsi_is_sas_rphy);
mutex_lock(&sas_host->lock);
list_for_each_entry(rphy, &sas_host->rphy_list, list) {
- struct sas_phy *parent = dev_to_phy(rphy->dev.parent);
-
- if (rphy->scsi_target_id == -1)
+ if (rphy->identify.device_type != SAS_END_DEVICE ||
+ rphy->scsi_target_id == -1)
continue;
- if ((channel == SCAN_WILD_CARD || channel == parent->port_identifier) &&
+ if ((channel == SCAN_WILD_CARD || channel == 0) &&
(id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) {
- scsi_scan_target(&rphy->dev, parent->port_identifier,
+ scsi_scan_target(&rphy->dev, 0,
rphy->scsi_target_id, lun, 1);
}
}
* Setup / Teardown code
*/
-#define SETUP_RPORT_ATTRIBUTE(field) \
- i->private_rphy_attrs[count] = class_device_attr_##field; \
- i->private_rphy_attrs[count].attr.mode = S_IRUGO; \
- i->private_rphy_attrs[count].store = NULL; \
- i->rphy_attrs[count] = &i->private_rphy_attrs[count]; \
- count++
+#define SETUP_TEMPLATE(attrb, field, perm, test) \
+ i->private_##attrb[count] = class_device_attr_##field; \
+ i->private_##attrb[count].attr.mode = perm; \
+ i->attrb[count] = &i->private_##attrb[count]; \
+ if (test) \
+ count++
+
+#define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \
+ i->private_##attrb[count] = class_device_attr_##field; \
+ i->private_##attrb[count].attr.mode = perm; \
+ if (ro_test) { \
+ i->private_##attrb[count].attr.mode = ro_perm; \
+ i->private_##attrb[count].store = NULL; \
+ } \
+ i->attrb[count] = &i->private_##attrb[count]; \
+ if (test) \
+ count++
+
+#define SETUP_RPORT_ATTRIBUTE(field) \
+ SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1)
+
+#define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \
+ SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func)
+
+#define SETUP_PHY_ATTRIBUTE(field) \
+ SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1)
+
+#define SETUP_PHY_ATTRIBUTE_RW(field) \
+ SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
+ !i->f->set_phy_speed, S_IRUGO)
#define SETUP_PORT_ATTRIBUTE(field) \
- i->private_phy_attrs[count] = class_device_attr_##field; \
- i->private_phy_attrs[count].attr.mode = S_IRUGO; \
- i->private_phy_attrs[count].store = NULL; \
- i->phy_attrs[count] = &i->private_phy_attrs[count]; \
- count++
+ SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1)
+
+#define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \
+ SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func)
+
+#define SETUP_PHY_ATTRIBUTE_WRONLY(field) \
+ SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, 1)
+
+#define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \
+ SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, i->f->func)
-#define SETUP_PORT_ATTRIBUTE_WRONLY(field) \
- i->private_phy_attrs[count] = class_device_attr_##field; \
- i->private_phy_attrs[count].attr.mode = S_IWUGO; \
- i->private_phy_attrs[count].show = NULL; \
- i->phy_attrs[count] = &i->private_phy_attrs[count]; \
- count++
+#define SETUP_END_DEV_ATTRIBUTE(field) \
+ SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1)
+#define SETUP_EXPANDER_ATTRIBUTE(field) \
+ SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1)
/**
* sas_attach_transport -- instantiate SAS transport template
struct sas_internal *i;
int count;
- i = kmalloc(sizeof(struct sas_internal), GFP_KERNEL);
+ i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL);
if (!i)
return NULL;
- memset(i, 0, sizeof(struct sas_internal));
i->t.user_scan = sas_user_scan;
i->phy_attr_cont.ac.match = sas_phy_match;
transport_container_register(&i->phy_attr_cont);
+ i->port_attr_cont.ac.class = &sas_port_class.class;
+ i->port_attr_cont.ac.attrs = &i->port_attrs[0];
+ i->port_attr_cont.ac.match = sas_port_match;
+ transport_container_register(&i->port_attr_cont);
+
i->rphy_attr_cont.ac.class = &sas_rphy_class.class;
i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0];
i->rphy_attr_cont.ac.match = sas_rphy_match;
transport_container_register(&i->rphy_attr_cont);
+ i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class;
+ i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0];
+ i->end_dev_attr_cont.ac.match = sas_end_dev_match;
+ transport_container_register(&i->end_dev_attr_cont);
+
+ i->expander_attr_cont.ac.class = &sas_expander_class.class;
+ i->expander_attr_cont.ac.attrs = &i->expander_attrs[0];
+ i->expander_attr_cont.ac.match = sas_expander_match;
+ transport_container_register(&i->expander_attr_cont);
+
i->f = ft;
count = 0;
+ SETUP_PORT_ATTRIBUTE(num_phys);
i->host_attrs[count] = NULL;
count = 0;
- SETUP_PORT_ATTRIBUTE(initiator_port_protocols);
- SETUP_PORT_ATTRIBUTE(target_port_protocols);
- SETUP_PORT_ATTRIBUTE(device_type);
- SETUP_PORT_ATTRIBUTE(sas_address);
- SETUP_PORT_ATTRIBUTE(phy_identifier);
- SETUP_PORT_ATTRIBUTE(port_identifier);
- SETUP_PORT_ATTRIBUTE(negotiated_linkrate);
- SETUP_PORT_ATTRIBUTE(minimum_linkrate_hw);
- SETUP_PORT_ATTRIBUTE(minimum_linkrate);
- SETUP_PORT_ATTRIBUTE(maximum_linkrate_hw);
- SETUP_PORT_ATTRIBUTE(maximum_linkrate);
-
- SETUP_PORT_ATTRIBUTE(invalid_dword_count);
- SETUP_PORT_ATTRIBUTE(running_disparity_error_count);
- SETUP_PORT_ATTRIBUTE(loss_of_dword_sync_count);
- SETUP_PORT_ATTRIBUTE(phy_reset_problem_count);
- SETUP_PORT_ATTRIBUTE_WRONLY(link_reset);
- SETUP_PORT_ATTRIBUTE_WRONLY(hard_reset);
+ SETUP_PHY_ATTRIBUTE(initiator_port_protocols);
+ SETUP_PHY_ATTRIBUTE(target_port_protocols);
+ SETUP_PHY_ATTRIBUTE(device_type);
+ SETUP_PHY_ATTRIBUTE(sas_address);
+ SETUP_PHY_ATTRIBUTE(phy_identifier);
+ //SETUP_PHY_ATTRIBUTE(port_identifier);
+ SETUP_PHY_ATTRIBUTE(negotiated_linkrate);
+ SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw);
+ SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate);
+ SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw);
+ SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate);
+
+ SETUP_PHY_ATTRIBUTE(invalid_dword_count);
+ SETUP_PHY_ATTRIBUTE(running_disparity_error_count);
+ SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count);
+ SETUP_PHY_ATTRIBUTE(phy_reset_problem_count);
+ SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset);
+ SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset);
i->phy_attrs[count] = NULL;
+ count = 0;
+ SETUP_PORT_ATTRIBUTE(num_phys);
+ i->port_attrs[count] = NULL;
+
count = 0;
SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols);
SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols);
SETUP_RPORT_ATTRIBUTE(rphy_device_type);
SETUP_RPORT_ATTRIBUTE(rphy_sas_address);
SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier);
+ SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier,
+ get_enclosure_identifier);
+ SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier,
+ get_bay_identifier);
i->rphy_attrs[count] = NULL;
+ count = 0;
+ SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning);
+ SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout);
+ SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout);
+ i->end_dev_attrs[count] = NULL;
+
+ count = 0;
+ SETUP_EXPANDER_ATTRIBUTE(vendor_id);
+ SETUP_EXPANDER_ATTRIBUTE(product_id);
+ SETUP_EXPANDER_ATTRIBUTE(product_rev);
+ SETUP_EXPANDER_ATTRIBUTE(component_vendor_id);
+ SETUP_EXPANDER_ATTRIBUTE(component_id);
+ SETUP_EXPANDER_ATTRIBUTE(component_revision_id);
+ SETUP_EXPANDER_ATTRIBUTE(level);
+ i->expander_attrs[count] = NULL;
+
return &i->t;
}
EXPORT_SYMBOL(sas_attach_transport);
transport_container_unregister(&i->t.host_attrs);
transport_container_unregister(&i->phy_attr_cont);
+ transport_container_unregister(&i->port_attr_cont);
transport_container_unregister(&i->rphy_attr_cont);
+ transport_container_unregister(&i->end_dev_attr_cont);
+ transport_container_unregister(&i->expander_attr_cont);
kfree(i);
}
error = transport_class_register(&sas_phy_class);
if (error)
goto out_unregister_transport;
- error = transport_class_register(&sas_rphy_class);
+ error = transport_class_register(&sas_port_class);
if (error)
goto out_unregister_phy;
+ error = transport_class_register(&sas_rphy_class);
+ if (error)
+ goto out_unregister_port;
+ error = transport_class_register(&sas_end_dev_class);
+ if (error)
+ goto out_unregister_rphy;
+ error = transport_class_register(&sas_expander_class);
+ if (error)
+ goto out_unregister_end_dev;
return 0;
+ out_unregister_end_dev:
+ transport_class_unregister(&sas_end_dev_class);
+ out_unregister_rphy:
+ transport_class_unregister(&sas_rphy_class);
+ out_unregister_port:
+ transport_class_unregister(&sas_port_class);
out_unregister_phy:
transport_class_unregister(&sas_phy_class);
out_unregister_transport:
{
transport_class_unregister(&sas_host_class);
transport_class_unregister(&sas_phy_class);
+ transport_class_unregister(&sas_port_class);
transport_class_unregister(&sas_rphy_class);
+ transport_class_unregister(&sas_end_dev_class);
+ transport_class_unregister(&sas_expander_class);
}
MODULE_AUTHOR("Christoph Hellwig");
git://git.onelab.eu / linux-2.6.git / blobdiff