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![Tim Schmielau](/assets/img/avatar_default.png)
Fix more include file problems that surfaced since I submitted the previous fix-missing-includes.patch. This should now allow not to include sched.h from module.h, which is done by a followup patch. Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
892 lines
24 KiB
C
892 lines
24 KiB
C
/*
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* Copyright (C) 2005 Dell Inc.
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* Released under GPL v2.
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*
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* Serial Attached SCSI (SAS) transport class.
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*
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* The SAS transport class contains common code to deal with SAS HBAs,
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* an aproximated representation of SAS topologies in the driver model,
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* and various sysfs attributes to expose these topologies and managment
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* interfaces to userspace.
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*
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* In addition to the basic SCSI core objects this transport class
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* introduces two additional intermediate objects: The SAS PHY
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* as represented by struct sas_phy defines an "outgoing" PHY on
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* a SAS HBA or Expander, and the SAS remote PHY represented by
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* struct sas_rphy defines an "incoming" PHY on a SAS Expander or
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* end device. Note that this is purely a software concept, the
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* underlying hardware for a PHY and a remote PHY is the exactly
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* the same.
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*
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* There is no concept of a SAS port in this code, users can see
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* what PHYs form a wide port based on the port_identifier attribute,
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* which is the same for all PHYs in a port.
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_transport.h>
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#include <scsi/scsi_transport_sas.h>
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#define SAS_HOST_ATTRS 0
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#define SAS_PORT_ATTRS 17
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#define SAS_RPORT_ATTRS 5
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struct sas_internal {
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struct scsi_transport_template t;
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struct sas_function_template *f;
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struct class_device_attribute private_host_attrs[SAS_HOST_ATTRS];
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struct class_device_attribute private_phy_attrs[SAS_PORT_ATTRS];
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struct class_device_attribute private_rphy_attrs[SAS_RPORT_ATTRS];
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struct transport_container phy_attr_cont;
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struct transport_container rphy_attr_cont;
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/*
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* The array of null terminated pointers to attributes
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* needed by scsi_sysfs.c
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*/
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struct class_device_attribute *host_attrs[SAS_HOST_ATTRS + 1];
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struct class_device_attribute *phy_attrs[SAS_PORT_ATTRS + 1];
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struct class_device_attribute *rphy_attrs[SAS_RPORT_ATTRS + 1];
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};
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#define to_sas_internal(tmpl) container_of(tmpl, struct sas_internal, t)
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struct sas_host_attrs {
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struct list_head rphy_list;
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spinlock_t lock;
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u32 next_target_id;
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};
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#define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data)
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/*
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* Hack to allow attributes of the same name in different objects.
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*/
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#define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
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struct class_device_attribute class_device_attr_##_prefix##_##_name = \
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__ATTR(_name,_mode,_show,_store)
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/*
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* Pretty printing helpers
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*/
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#define sas_bitfield_name_match(title, table) \
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static ssize_t \
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get_sas_##title##_names(u32 table_key, char *buf) \
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{ \
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char *prefix = ""; \
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ssize_t len = 0; \
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int i; \
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\
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for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \
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if (table[i].value & table_key) { \
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len += sprintf(buf + len, "%s%s", \
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prefix, table[i].name); \
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prefix = ", "; \
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} \
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} \
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len += sprintf(buf + len, "\n"); \
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return len; \
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}
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#define sas_bitfield_name_search(title, table) \
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static ssize_t \
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get_sas_##title##_names(u32 table_key, char *buf) \
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{ \
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ssize_t len = 0; \
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int i; \
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\
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for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \
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if (table[i].value == table_key) { \
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len += sprintf(buf + len, "%s", \
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table[i].name); \
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break; \
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} \
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} \
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len += sprintf(buf + len, "\n"); \
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return len; \
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}
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static struct {
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u32 value;
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char *name;
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} sas_device_type_names[] = {
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{ SAS_PHY_UNUSED, "unused" },
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{ SAS_END_DEVICE, "end device" },
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{ SAS_EDGE_EXPANDER_DEVICE, "edge expander" },
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{ SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" },
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};
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sas_bitfield_name_search(device_type, sas_device_type_names)
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static struct {
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u32 value;
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char *name;
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} sas_protocol_names[] = {
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{ SAS_PROTOCOL_SATA, "sata" },
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{ SAS_PROTOCOL_SMP, "smp" },
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{ SAS_PROTOCOL_STP, "stp" },
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{ SAS_PROTOCOL_SSP, "ssp" },
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};
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sas_bitfield_name_match(protocol, sas_protocol_names)
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static struct {
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u32 value;
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char *name;
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} sas_linkspeed_names[] = {
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{ SAS_LINK_RATE_UNKNOWN, "Unknown" },
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{ SAS_PHY_DISABLED, "Phy disabled" },
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{ SAS_LINK_RATE_FAILED, "Link Rate failed" },
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{ SAS_SATA_SPINUP_HOLD, "Spin-up hold" },
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{ SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" },
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{ SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" },
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};
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sas_bitfield_name_search(linkspeed, sas_linkspeed_names)
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/*
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* SAS host attributes
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*/
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static int sas_host_setup(struct transport_container *tc, struct device *dev,
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struct class_device *cdev)
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{
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struct Scsi_Host *shost = dev_to_shost(dev);
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struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
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INIT_LIST_HEAD(&sas_host->rphy_list);
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spin_lock_init(&sas_host->lock);
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sas_host->next_target_id = 0;
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return 0;
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}
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static DECLARE_TRANSPORT_CLASS(sas_host_class,
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"sas_host", sas_host_setup, NULL, NULL);
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static int sas_host_match(struct attribute_container *cont,
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struct device *dev)
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{
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struct Scsi_Host *shost;
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struct sas_internal *i;
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if (!scsi_is_host_device(dev))
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return 0;
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shost = dev_to_shost(dev);
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if (!shost->transportt)
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return 0;
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if (shost->transportt->host_attrs.ac.class !=
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&sas_host_class.class)
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return 0;
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i = to_sas_internal(shost->transportt);
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return &i->t.host_attrs.ac == cont;
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}
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static int do_sas_phy_delete(struct device *dev, void *data)
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{
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if (scsi_is_sas_phy(dev))
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sas_phy_delete(dev_to_phy(dev));
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return 0;
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}
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/**
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* sas_remove_host -- tear down a Scsi_Host's SAS data structures
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* @shost: Scsi Host that is torn down
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*
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* Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
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* Must be called just before scsi_remove_host for SAS HBAs.
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*/
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void sas_remove_host(struct Scsi_Host *shost)
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{
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device_for_each_child(&shost->shost_gendev, NULL, do_sas_phy_delete);
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}
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EXPORT_SYMBOL(sas_remove_host);
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/*
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* SAS Port attributes
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*/
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#define sas_phy_show_simple(field, name, format_string, cast) \
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static ssize_t \
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show_sas_phy_##name(struct class_device *cdev, char *buf) \
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{ \
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struct sas_phy *phy = transport_class_to_phy(cdev); \
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\
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return snprintf(buf, 20, format_string, cast phy->field); \
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}
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#define sas_phy_simple_attr(field, name, format_string, type) \
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sas_phy_show_simple(field, name, format_string, (type)) \
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static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
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#define sas_phy_show_protocol(field, name) \
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static ssize_t \
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show_sas_phy_##name(struct class_device *cdev, char *buf) \
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{ \
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struct sas_phy *phy = transport_class_to_phy(cdev); \
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\
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if (!phy->field) \
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return snprintf(buf, 20, "none\n"); \
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return get_sas_protocol_names(phy->field, buf); \
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}
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#define sas_phy_protocol_attr(field, name) \
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sas_phy_show_protocol(field, name) \
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static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
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#define sas_phy_show_linkspeed(field) \
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static ssize_t \
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show_sas_phy_##field(struct class_device *cdev, char *buf) \
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{ \
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struct sas_phy *phy = transport_class_to_phy(cdev); \
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\
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return get_sas_linkspeed_names(phy->field, buf); \
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}
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#define sas_phy_linkspeed_attr(field) \
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sas_phy_show_linkspeed(field) \
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static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
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#define sas_phy_show_linkerror(field) \
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static ssize_t \
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show_sas_phy_##field(struct class_device *cdev, char *buf) \
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{ \
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struct sas_phy *phy = transport_class_to_phy(cdev); \
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struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
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struct sas_internal *i = to_sas_internal(shost->transportt); \
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int error; \
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\
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if (!phy->local_attached) \
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return -EINVAL; \
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\
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error = i->f->get_linkerrors(phy); \
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if (error) \
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return error; \
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return snprintf(buf, 20, "%u\n", phy->field); \
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}
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#define sas_phy_linkerror_attr(field) \
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sas_phy_show_linkerror(field) \
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static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
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static ssize_t
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show_sas_device_type(struct class_device *cdev, char *buf)
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{
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struct sas_phy *phy = transport_class_to_phy(cdev);
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if (!phy->identify.device_type)
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return snprintf(buf, 20, "none\n");
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return get_sas_device_type_names(phy->identify.device_type, buf);
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}
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static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL);
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static ssize_t do_sas_phy_reset(struct class_device *cdev,
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size_t count, int hard_reset)
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{
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struct sas_phy *phy = transport_class_to_phy(cdev);
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struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
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struct sas_internal *i = to_sas_internal(shost->transportt);
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int error;
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if (!phy->local_attached)
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return -EINVAL;
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error = i->f->phy_reset(phy, hard_reset);
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if (error)
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return error;
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return count;
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};
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static ssize_t store_sas_link_reset(struct class_device *cdev,
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const char *buf, size_t count)
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{
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return do_sas_phy_reset(cdev, count, 0);
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}
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static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset);
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static ssize_t store_sas_hard_reset(struct class_device *cdev,
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const char *buf, size_t count)
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{
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return do_sas_phy_reset(cdev, count, 1);
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}
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static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset);
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sas_phy_protocol_attr(identify.initiator_port_protocols,
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initiator_port_protocols);
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sas_phy_protocol_attr(identify.target_port_protocols,
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target_port_protocols);
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sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
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unsigned long long);
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sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
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sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", u8);
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sas_phy_linkspeed_attr(negotiated_linkrate);
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sas_phy_linkspeed_attr(minimum_linkrate_hw);
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sas_phy_linkspeed_attr(minimum_linkrate);
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sas_phy_linkspeed_attr(maximum_linkrate_hw);
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sas_phy_linkspeed_attr(maximum_linkrate);
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sas_phy_linkerror_attr(invalid_dword_count);
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sas_phy_linkerror_attr(running_disparity_error_count);
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sas_phy_linkerror_attr(loss_of_dword_sync_count);
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sas_phy_linkerror_attr(phy_reset_problem_count);
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static DECLARE_TRANSPORT_CLASS(sas_phy_class,
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"sas_phy", NULL, NULL, NULL);
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static int sas_phy_match(struct attribute_container *cont, struct device *dev)
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{
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struct Scsi_Host *shost;
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struct sas_internal *i;
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if (!scsi_is_sas_phy(dev))
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return 0;
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shost = dev_to_shost(dev->parent);
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if (!shost->transportt)
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return 0;
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if (shost->transportt->host_attrs.ac.class !=
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&sas_host_class.class)
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return 0;
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i = to_sas_internal(shost->transportt);
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return &i->phy_attr_cont.ac == cont;
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}
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static void sas_phy_release(struct device *dev)
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{
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struct sas_phy *phy = dev_to_phy(dev);
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put_device(dev->parent);
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kfree(phy);
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}
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/**
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* sas_phy_alloc -- allocates and initialize a SAS PHY structure
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* @parent: Parent device
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* @number: Port number
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*
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* Allocates an SAS PHY structure. It will be added in the device tree
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* below the device specified by @parent, which has to be either a Scsi_Host
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* or sas_rphy.
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*
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* Returns:
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* SAS PHY allocated or %NULL if the allocation failed.
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*/
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struct sas_phy *sas_phy_alloc(struct device *parent, int number)
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{
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struct Scsi_Host *shost = dev_to_shost(parent);
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struct sas_phy *phy;
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phy = kmalloc(sizeof(*phy), GFP_KERNEL);
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if (!phy)
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return NULL;
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memset(phy, 0, sizeof(*phy));
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get_device(parent);
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phy->number = number;
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device_initialize(&phy->dev);
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phy->dev.parent = get_device(parent);
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phy->dev.release = sas_phy_release;
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sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number);
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transport_setup_device(&phy->dev);
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return phy;
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}
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EXPORT_SYMBOL(sas_phy_alloc);
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/**
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* sas_phy_add -- add a SAS PHY to the device hierachy
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* @phy: The PHY to be added
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*
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* Publishes a SAS PHY to the rest of the system.
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*/
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int sas_phy_add(struct sas_phy *phy)
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{
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int error;
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error = device_add(&phy->dev);
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if (!error) {
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transport_add_device(&phy->dev);
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transport_configure_device(&phy->dev);
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}
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return error;
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}
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EXPORT_SYMBOL(sas_phy_add);
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/**
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* sas_phy_free -- free a SAS PHY
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* @phy: SAS PHY to free
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*
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* Frees the specified SAS PHY.
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*
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* Note:
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* This function must only be called on a PHY that has not
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* sucessfully been added using sas_phy_add().
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*/
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void sas_phy_free(struct sas_phy *phy)
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{
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transport_destroy_device(&phy->dev);
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put_device(phy->dev.parent);
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put_device(phy->dev.parent);
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put_device(phy->dev.parent);
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kfree(phy);
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}
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EXPORT_SYMBOL(sas_phy_free);
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/**
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* sas_phy_delete -- remove SAS PHY
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* @phy: SAS PHY to remove
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*
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* Removes the specified SAS PHY. If the SAS PHY has an
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* associated remote PHY it is removed before.
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*/
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void
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sas_phy_delete(struct sas_phy *phy)
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{
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struct device *dev = &phy->dev;
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if (phy->rphy)
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sas_rphy_delete(phy->rphy);
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transport_remove_device(dev);
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device_del(dev);
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transport_destroy_device(dev);
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put_device(dev->parent);
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}
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EXPORT_SYMBOL(sas_phy_delete);
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/**
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* scsi_is_sas_phy -- check if a struct device represents a SAS PHY
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* @dev: device to check
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*
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* Returns:
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* %1 if the device represents a SAS PHY, %0 else
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*/
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int scsi_is_sas_phy(const struct device *dev)
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{
|
|
return dev->release == sas_phy_release;
|
|
}
|
|
EXPORT_SYMBOL(scsi_is_sas_phy);
|
|
|
|
/*
|
|
* SAS remote PHY attributes.
|
|
*/
|
|
|
|
#define sas_rphy_show_simple(field, name, format_string, cast) \
|
|
static ssize_t \
|
|
show_sas_rphy_##name(struct class_device *cdev, char *buf) \
|
|
{ \
|
|
struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
|
|
\
|
|
return snprintf(buf, 20, format_string, cast rphy->field); \
|
|
}
|
|
|
|
#define sas_rphy_simple_attr(field, name, format_string, type) \
|
|
sas_rphy_show_simple(field, name, format_string, (type)) \
|
|
static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
|
|
show_sas_rphy_##name, NULL)
|
|
|
|
#define sas_rphy_show_protocol(field, name) \
|
|
static ssize_t \
|
|
show_sas_rphy_##name(struct class_device *cdev, char *buf) \
|
|
{ \
|
|
struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
|
|
\
|
|
if (!rphy->field) \
|
|
return snprintf(buf, 20, "none\n"); \
|
|
return get_sas_protocol_names(rphy->field, buf); \
|
|
}
|
|
|
|
#define sas_rphy_protocol_attr(field, name) \
|
|
sas_rphy_show_protocol(field, name) \
|
|
static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
|
|
show_sas_rphy_##name, NULL)
|
|
|
|
static ssize_t
|
|
show_sas_rphy_device_type(struct class_device *cdev, char *buf)
|
|
{
|
|
struct sas_rphy *rphy = transport_class_to_rphy(cdev);
|
|
|
|
if (!rphy->identify.device_type)
|
|
return snprintf(buf, 20, "none\n");
|
|
return get_sas_device_type_names(
|
|
rphy->identify.device_type, buf);
|
|
}
|
|
|
|
static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO,
|
|
show_sas_rphy_device_type, NULL);
|
|
|
|
sas_rphy_protocol_attr(identify.initiator_port_protocols,
|
|
initiator_port_protocols);
|
|
sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols);
|
|
sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
|
|
unsigned long long);
|
|
sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
|
|
|
|
static DECLARE_TRANSPORT_CLASS(sas_rphy_class,
|
|
"sas_rphy", NULL, NULL, NULL);
|
|
|
|
static int sas_rphy_match(struct attribute_container *cont, struct device *dev)
|
|
{
|
|
struct Scsi_Host *shost;
|
|
struct sas_internal *i;
|
|
|
|
if (!scsi_is_sas_rphy(dev))
|
|
return 0;
|
|
shost = dev_to_shost(dev->parent->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->rphy_attr_cont.ac == cont;
|
|
}
|
|
|
|
static void sas_rphy_release(struct device *dev)
|
|
{
|
|
struct sas_rphy *rphy = dev_to_rphy(dev);
|
|
|
|
put_device(dev->parent);
|
|
kfree(rphy);
|
|
}
|
|
|
|
/**
|
|
* sas_rphy_alloc -- allocates and initialize a SAS remote PHY structure
|
|
* @parent: SAS PHY this remote PHY is conneted to
|
|
*
|
|
* 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 Scsi_Host *shost = dev_to_shost(&parent->dev);
|
|
struct sas_rphy *rphy;
|
|
|
|
rphy = kmalloc(sizeof(*rphy), GFP_KERNEL);
|
|
if (!rphy) {
|
|
put_device(&parent->dev);
|
|
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",
|
|
shost->host_no, parent->number);
|
|
transport_setup_device(&rphy->dev);
|
|
|
|
return rphy;
|
|
}
|
|
EXPORT_SYMBOL(sas_rphy_alloc);
|
|
|
|
/**
|
|
* sas_rphy_add -- add a SAS remote PHY to the device hierachy
|
|
* @rphy: The remote PHY to be added
|
|
*
|
|
* Publishes a SAS remote PHY to the rest of the system.
|
|
*/
|
|
int sas_rphy_add(struct sas_rphy *rphy)
|
|
{
|
|
struct sas_phy *parent = dev_to_phy(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;
|
|
int error;
|
|
|
|
if (parent->rphy)
|
|
return -ENXIO;
|
|
parent->rphy = rphy;
|
|
|
|
error = device_add(&rphy->dev);
|
|
if (error)
|
|
return error;
|
|
transport_add_device(&rphy->dev);
|
|
transport_configure_device(&rphy->dev);
|
|
|
|
spin_lock(&sas_host->lock);
|
|
list_add_tail(&rphy->list, &sas_host->rphy_list);
|
|
if (identify->device_type == SAS_END_DEVICE &&
|
|
(identify->target_port_protocols &
|
|
(SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA)))
|
|
rphy->scsi_target_id = sas_host->next_target_id++;
|
|
else
|
|
rphy->scsi_target_id = -1;
|
|
spin_unlock(&sas_host->lock);
|
|
|
|
if (rphy->scsi_target_id != -1) {
|
|
scsi_scan_target(&rphy->dev, parent->number,
|
|
rphy->scsi_target_id, ~0, 0);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(sas_rphy_add);
|
|
|
|
/**
|
|
* sas_rphy_free -- free a SAS remote PHY
|
|
* @rphy SAS remote PHY to free
|
|
*
|
|
* Frees the specified SAS remote PHY.
|
|
*
|
|
* Note:
|
|
* This function must only be called on a remote
|
|
* PHY that has not sucessfully been added using
|
|
* sas_rphy_add().
|
|
*/
|
|
void sas_rphy_free(struct sas_rphy *rphy)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
|
|
struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
|
|
|
|
spin_lock(&sas_host->lock);
|
|
list_del(&rphy->list);
|
|
spin_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);
|
|
}
|
|
EXPORT_SYMBOL(sas_rphy_free);
|
|
|
|
/**
|
|
* sas_rphy_delete -- remove SAS remote PHY
|
|
* @rphy: SAS remote PHY to remove
|
|
*
|
|
* Removes the specified SAS remote PHY.
|
|
*/
|
|
void
|
|
sas_rphy_delete(struct sas_rphy *rphy)
|
|
{
|
|
struct device *dev = &rphy->dev;
|
|
struct sas_phy *parent = dev_to_phy(dev->parent);
|
|
struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
|
|
struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
|
|
|
|
scsi_remove_target(dev);
|
|
|
|
transport_remove_device(dev);
|
|
device_del(dev);
|
|
transport_destroy_device(dev);
|
|
|
|
spin_lock(&sas_host->lock);
|
|
list_del(&rphy->list);
|
|
spin_unlock(&sas_host->lock);
|
|
|
|
put_device(&parent->dev);
|
|
}
|
|
EXPORT_SYMBOL(sas_rphy_delete);
|
|
|
|
/**
|
|
* scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY
|
|
* @dev: device to check
|
|
*
|
|
* Returns:
|
|
* %1 if the device represents a SAS remote PHY, %0 else
|
|
*/
|
|
int scsi_is_sas_rphy(const struct device *dev)
|
|
{
|
|
return dev->release == sas_rphy_release;
|
|
}
|
|
EXPORT_SYMBOL(scsi_is_sas_rphy);
|
|
|
|
|
|
/*
|
|
* SCSI scan helper
|
|
*/
|
|
|
|
static struct device *sas_target_parent(struct Scsi_Host *shost,
|
|
int channel, uint id)
|
|
{
|
|
struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
|
|
struct sas_rphy *rphy;
|
|
struct device *dev = NULL;
|
|
|
|
spin_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 (parent->number == channel &&
|
|
rphy->scsi_target_id == id)
|
|
dev = &rphy->dev;
|
|
}
|
|
spin_unlock(&sas_host->lock);
|
|
|
|
return dev;
|
|
}
|
|
|
|
|
|
/*
|
|
* 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_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++
|
|
|
|
#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++
|
|
|
|
|
|
/**
|
|
* sas_attach_transport -- instantiate SAS transport template
|
|
* @ft: SAS transport class function template
|
|
*/
|
|
struct scsi_transport_template *
|
|
sas_attach_transport(struct sas_function_template *ft)
|
|
{
|
|
struct sas_internal *i;
|
|
int count;
|
|
|
|
i = kmalloc(sizeof(struct sas_internal), GFP_KERNEL);
|
|
if (!i)
|
|
return NULL;
|
|
memset(i, 0, sizeof(struct sas_internal));
|
|
|
|
i->t.target_parent = sas_target_parent;
|
|
|
|
i->t.host_attrs.ac.attrs = &i->host_attrs[0];
|
|
i->t.host_attrs.ac.class = &sas_host_class.class;
|
|
i->t.host_attrs.ac.match = sas_host_match;
|
|
transport_container_register(&i->t.host_attrs);
|
|
i->t.host_size = sizeof(struct sas_host_attrs);
|
|
|
|
i->phy_attr_cont.ac.class = &sas_phy_class.class;
|
|
i->phy_attr_cont.ac.attrs = &i->phy_attrs[0];
|
|
i->phy_attr_cont.ac.match = sas_phy_match;
|
|
transport_container_register(&i->phy_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->f = ft;
|
|
|
|
count = 0;
|
|
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);
|
|
i->phy_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);
|
|
i->rphy_attrs[count] = NULL;
|
|
|
|
return &i->t;
|
|
}
|
|
EXPORT_SYMBOL(sas_attach_transport);
|
|
|
|
/**
|
|
* sas_release_transport -- release SAS transport template instance
|
|
* @t: transport template instance
|
|
*/
|
|
void sas_release_transport(struct scsi_transport_template *t)
|
|
{
|
|
struct sas_internal *i = to_sas_internal(t);
|
|
|
|
transport_container_unregister(&i->t.host_attrs);
|
|
transport_container_unregister(&i->phy_attr_cont);
|
|
transport_container_unregister(&i->rphy_attr_cont);
|
|
|
|
kfree(i);
|
|
}
|
|
EXPORT_SYMBOL(sas_release_transport);
|
|
|
|
static __init int sas_transport_init(void)
|
|
{
|
|
int error;
|
|
|
|
error = transport_class_register(&sas_host_class);
|
|
if (error)
|
|
goto out;
|
|
error = transport_class_register(&sas_phy_class);
|
|
if (error)
|
|
goto out_unregister_transport;
|
|
error = transport_class_register(&sas_rphy_class);
|
|
if (error)
|
|
goto out_unregister_phy;
|
|
|
|
return 0;
|
|
|
|
out_unregister_phy:
|
|
transport_class_unregister(&sas_phy_class);
|
|
out_unregister_transport:
|
|
transport_class_unregister(&sas_host_class);
|
|
out:
|
|
return error;
|
|
|
|
}
|
|
|
|
static void __exit sas_transport_exit(void)
|
|
{
|
|
transport_class_unregister(&sas_host_class);
|
|
transport_class_unregister(&sas_phy_class);
|
|
transport_class_unregister(&sas_rphy_class);
|
|
}
|
|
|
|
MODULE_AUTHOR("Christoph Hellwig");
|
|
MODULE_DESCRIPTION("SAS Transphy Attributes");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(sas_transport_init);
|
|
module_exit(sas_transport_exit);
|