#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 7
-
-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;
};
#define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data)
INIT_LIST_HEAD(&sas_host->rphy_list);
mutex_init(&sas_host->lock);
sas_host->next_target_id = 0;
+ sas_host->next_expander_id = 0;
return 0;
}
if (!phy)
return NULL;
- 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);
+ 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);
transport_remove_device(dev);
device_del(dev);
transport_destroy_device(dev);
- put_device(dev->parent);
+ put_device(dev);
}
EXPORT_SYMBOL(sas_phy_delete);
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(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(rphy);
+ kfree(edev);
}
/**
- * 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_phy *parent)
{
struct Scsi_Host *shost = dev_to_shost(&parent->dev);
- struct sas_rphy *rphy;
+ struct sas_end_device *rdev;
- rphy = kzalloc(sizeof(*rphy), GFP_KERNEL);
- if (!rphy) {
- put_device(&parent->dev);
+ rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
+ if (!rdev) {
return NULL;
}
- 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",
+ device_initialize(&rdev->rphy.dev);
+ rdev->rphy.dev.parent = get_device(&parent->dev);
+ rdev->rphy.dev.release = sas_end_device_release;
+ sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d-%d",
shost->host_no, parent->port_identifier, parent->number);
- transport_setup_device(&rphy->dev);
+ rdev->rphy.identify.device_type = SAS_END_DEVICE;
+ transport_setup_device(&rdev->rphy.dev);
+
+ return &rdev->rphy;
+}
+EXPORT_SYMBOL(sas_end_device_alloc);
+
+/**
+ * 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_phy *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;
+ transport_setup_device(&rdev->rphy.dev);
- return rphy;
+ 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
(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) {
+ if (identify->device_type == SAS_END_DEVICE &&
+ rphy->scsi_target_id != -1) {
scsi_scan_target(&rphy->dev, parent->port_identifier,
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);
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);
* 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->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) \
- 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]; \
- if (i->f->func) \
- count++
+ SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func)
#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(phy_attrs, field, S_IRUGO, 1)
#define SETUP_OPTIONAL_PORT_ATTRIBUTE(field, func) \
- 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]; \
- if (i->f->func) \
- count++
+ SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 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++
+ SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, 1)
#define SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(field, func) \
- 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]; \
- if (i->f->func) \
- count++
+ SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, i->f->func)
+#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
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;
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->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_rphy_class);
if (error)
goto out_unregister_phy;
+ 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_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_rphy_class);
+ transport_class_unregister(&sas_end_dev_class);
+ transport_class_unregister(&sas_expander_class);
}
MODULE_AUTHOR("Christoph Hellwig");