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![Gwendal Grignou](/assets/img/avatar_default.png)
Without this patch, failed probe would not free resources like irq. ata port tdev object currently hold a reference to the ata port object. Therefore the ata port object release function will not get called until the ata_tport_release is called. But that would never happen, releasing the last reference of ata port dev is done by scsi_host_release, which is called by ata_host_release when the ata port object is released. The ata device objects actually do not need to explicitly hold a reference to their real counterpart, given the transport objects are the children of these objects and device_add() is call for each child. We know the parent will not be deleted until we call the child's device_del(). Reported-by: Matthew Whitehead <tedheadster@gmail.com> Tested-by: Matthew Whitehead <tedheadster@gmail.com> Suggested-by: Tejun Heo <tj@kernel.org> Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Signed-off-by: Tejun Heo <tj@kernel.org>
807 lines
20 KiB
C
807 lines
20 KiB
C
/*
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* Copyright 2008 ioogle, Inc. All rights reserved.
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* Released under GPL v2.
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*
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* Libata transport class.
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*
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* The ATA transport class contains common code to deal with ATA HBAs,
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* an approximated representation of ATA topologies in the driver model,
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* and various sysfs attributes to expose these topologies and management
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* interfaces to user-space.
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*
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* There are 3 objects defined in in this class:
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* - ata_port
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* - ata_link
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* - ata_device
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* Each port has a link object. Each link can have up to two devices for PATA
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* and generally one for SATA.
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* If there is SATA port multiplier [PMP], 15 additional ata_link object are
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* created.
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*
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* These objects are created when the ata host is initialized and when a PMP is
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* found. They are removed only when the HBA is removed, cleaned before the
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* error handler runs.
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*/
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#include <linux/kernel.h>
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#include <linux/blkdev.h>
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#include <linux/spinlock.h>
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#include <linux/slab.h>
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#include <scsi/scsi_transport.h>
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#include <linux/libata.h>
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#include <linux/hdreg.h>
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#include <linux/uaccess.h>
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#include <linux/pm_runtime.h>
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#include "libata.h"
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#include "libata-transport.h"
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#define ATA_PORT_ATTRS 3
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#define ATA_LINK_ATTRS 3
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#define ATA_DEV_ATTRS 9
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struct scsi_transport_template;
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struct scsi_transport_template *ata_scsi_transport_template;
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struct ata_internal {
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struct scsi_transport_template t;
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struct device_attribute private_port_attrs[ATA_PORT_ATTRS];
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struct device_attribute private_link_attrs[ATA_LINK_ATTRS];
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struct device_attribute private_dev_attrs[ATA_DEV_ATTRS];
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struct transport_container link_attr_cont;
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struct transport_container dev_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 device_attribute *link_attrs[ATA_LINK_ATTRS + 1];
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struct device_attribute *port_attrs[ATA_PORT_ATTRS + 1];
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struct device_attribute *dev_attrs[ATA_DEV_ATTRS + 1];
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};
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#define to_ata_internal(tmpl) container_of(tmpl, struct ata_internal, t)
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#define tdev_to_device(d) \
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container_of((d), struct ata_device, tdev)
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#define transport_class_to_dev(dev) \
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tdev_to_device((dev)->parent)
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#define tdev_to_link(d) \
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container_of((d), struct ata_link, tdev)
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#define transport_class_to_link(dev) \
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tdev_to_link((dev)->parent)
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#define tdev_to_port(d) \
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container_of((d), struct ata_port, tdev)
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#define transport_class_to_port(dev) \
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tdev_to_port((dev)->parent)
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/* Device objects are always created whit link objects */
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static int ata_tdev_add(struct ata_device *dev);
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static void ata_tdev_delete(struct ata_device *dev);
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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 ATA_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
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struct device_attribute device_attr_##_prefix##_##_name = \
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__ATTR(_name,_mode,_show,_store)
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#define ata_bitfield_name_match(title, table) \
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static ssize_t \
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get_ata_##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 < ARRAY_SIZE(table); 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 ata_bitfield_name_search(title, table) \
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static ssize_t \
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get_ata_##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 < ARRAY_SIZE(table); 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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} ata_class_names[] = {
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{ ATA_DEV_UNKNOWN, "unknown" },
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{ ATA_DEV_ATA, "ata" },
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{ ATA_DEV_ATA_UNSUP, "ata" },
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{ ATA_DEV_ATAPI, "atapi" },
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{ ATA_DEV_ATAPI_UNSUP, "atapi" },
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{ ATA_DEV_PMP, "pmp" },
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{ ATA_DEV_PMP_UNSUP, "pmp" },
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{ ATA_DEV_SEMB, "semb" },
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{ ATA_DEV_SEMB_UNSUP, "semb" },
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{ ATA_DEV_ZAC, "zac" },
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{ ATA_DEV_NONE, "none" }
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};
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ata_bitfield_name_search(class, ata_class_names)
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static struct {
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u32 value;
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char *name;
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} ata_err_names[] = {
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{ AC_ERR_DEV, "DeviceError" },
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{ AC_ERR_HSM, "HostStateMachineError" },
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{ AC_ERR_TIMEOUT, "Timeout" },
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{ AC_ERR_MEDIA, "MediaError" },
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{ AC_ERR_ATA_BUS, "BusError" },
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{ AC_ERR_HOST_BUS, "HostBusError" },
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{ AC_ERR_SYSTEM, "SystemError" },
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{ AC_ERR_INVALID, "InvalidArg" },
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{ AC_ERR_OTHER, "Unknown" },
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{ AC_ERR_NODEV_HINT, "NoDeviceHint" },
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{ AC_ERR_NCQ, "NCQError" }
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};
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ata_bitfield_name_match(err, ata_err_names)
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static struct {
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u32 value;
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char *name;
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} ata_xfer_names[] = {
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{ XFER_UDMA_7, "XFER_UDMA_7" },
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{ XFER_UDMA_6, "XFER_UDMA_6" },
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{ XFER_UDMA_5, "XFER_UDMA_5" },
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{ XFER_UDMA_4, "XFER_UDMA_4" },
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{ XFER_UDMA_3, "XFER_UDMA_3" },
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{ XFER_UDMA_2, "XFER_UDMA_2" },
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{ XFER_UDMA_1, "XFER_UDMA_1" },
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{ XFER_UDMA_0, "XFER_UDMA_0" },
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{ XFER_MW_DMA_4, "XFER_MW_DMA_4" },
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{ XFER_MW_DMA_3, "XFER_MW_DMA_3" },
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{ XFER_MW_DMA_2, "XFER_MW_DMA_2" },
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{ XFER_MW_DMA_1, "XFER_MW_DMA_1" },
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{ XFER_MW_DMA_0, "XFER_MW_DMA_0" },
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{ XFER_SW_DMA_2, "XFER_SW_DMA_2" },
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{ XFER_SW_DMA_1, "XFER_SW_DMA_1" },
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{ XFER_SW_DMA_0, "XFER_SW_DMA_0" },
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{ XFER_PIO_6, "XFER_PIO_6" },
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{ XFER_PIO_5, "XFER_PIO_5" },
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{ XFER_PIO_4, "XFER_PIO_4" },
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{ XFER_PIO_3, "XFER_PIO_3" },
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{ XFER_PIO_2, "XFER_PIO_2" },
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{ XFER_PIO_1, "XFER_PIO_1" },
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{ XFER_PIO_0, "XFER_PIO_0" },
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{ XFER_PIO_SLOW, "XFER_PIO_SLOW" }
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};
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ata_bitfield_name_match(xfer,ata_xfer_names)
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/*
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* ATA Port attributes
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*/
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#define ata_port_show_simple(field, name, format_string, cast) \
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static ssize_t \
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show_ata_port_##name(struct device *dev, \
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struct device_attribute *attr, char *buf) \
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{ \
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struct ata_port *ap = transport_class_to_port(dev); \
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\
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return snprintf(buf, 20, format_string, cast ap->field); \
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}
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#define ata_port_simple_attr(field, name, format_string, type) \
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ata_port_show_simple(field, name, format_string, (type)) \
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static DEVICE_ATTR(name, S_IRUGO, show_ata_port_##name, NULL)
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ata_port_simple_attr(nr_pmp_links, nr_pmp_links, "%d\n", int);
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ata_port_simple_attr(stats.idle_irq, idle_irq, "%ld\n", unsigned long);
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ata_port_simple_attr(local_port_no, port_no, "%u\n", unsigned int);
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static DECLARE_TRANSPORT_CLASS(ata_port_class,
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"ata_port", NULL, NULL, NULL);
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static void ata_tport_release(struct device *dev)
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{
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}
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/**
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* ata_is_port -- check if a struct device represents a ATA port
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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 ATA Port, %0 else
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*/
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static int ata_is_port(const struct device *dev)
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{
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return dev->release == ata_tport_release;
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}
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static int ata_tport_match(struct attribute_container *cont,
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struct device *dev)
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{
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if (!ata_is_port(dev))
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return 0;
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return &ata_scsi_transport_template->host_attrs.ac == cont;
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}
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/**
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* ata_tport_delete -- remove ATA PORT
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* @port: ATA PORT to remove
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*
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* Removes the specified ATA PORT. Remove the associated link as well.
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*/
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void ata_tport_delete(struct ata_port *ap)
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{
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struct device *dev = &ap->tdev;
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ata_tlink_delete(&ap->link);
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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);
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}
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/** ata_tport_add - initialize a transport ATA port structure
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*
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* @parent: parent device
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* @ap: existing ata_port structure
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*
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* Initialize a ATA port structure for sysfs. It will be added to the device
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* tree below the device specified by @parent which could be a PCI device.
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*
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* Returns %0 on success
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*/
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int ata_tport_add(struct device *parent,
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struct ata_port *ap)
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{
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int error;
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struct device *dev = &ap->tdev;
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device_initialize(dev);
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dev->type = &ata_port_type;
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dev->parent = parent;
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dev->release = ata_tport_release;
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dev_set_name(dev, "ata%d", ap->print_id);
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transport_setup_device(dev);
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ata_acpi_bind_port(ap);
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error = device_add(dev);
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if (error) {
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goto tport_err;
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}
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device_enable_async_suspend(dev);
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pm_runtime_set_active(dev);
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pm_runtime_enable(dev);
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pm_runtime_forbid(dev);
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transport_add_device(dev);
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transport_configure_device(dev);
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error = ata_tlink_add(&ap->link);
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if (error) {
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goto tport_link_err;
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}
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return 0;
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tport_link_err:
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transport_remove_device(dev);
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device_del(dev);
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tport_err:
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transport_destroy_device(dev);
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put_device(dev);
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return error;
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}
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/*
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* ATA link attributes
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*/
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static int noop(int x) { return x; }
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#define ata_link_show_linkspeed(field, format) \
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static ssize_t \
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show_ata_link_##field(struct device *dev, \
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struct device_attribute *attr, char *buf) \
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{ \
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struct ata_link *link = transport_class_to_link(dev); \
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\
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return sprintf(buf, "%s\n", sata_spd_string(format(link->field))); \
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}
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#define ata_link_linkspeed_attr(field, format) \
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ata_link_show_linkspeed(field, format) \
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static DEVICE_ATTR(field, S_IRUGO, show_ata_link_##field, NULL)
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ata_link_linkspeed_attr(hw_sata_spd_limit, fls);
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ata_link_linkspeed_attr(sata_spd_limit, fls);
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ata_link_linkspeed_attr(sata_spd, noop);
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static DECLARE_TRANSPORT_CLASS(ata_link_class,
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"ata_link", NULL, NULL, NULL);
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static void ata_tlink_release(struct device *dev)
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{
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}
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/**
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* ata_is_link -- check if a struct device represents a ATA link
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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 ATA link, %0 else
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*/
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static int ata_is_link(const struct device *dev)
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{
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return dev->release == ata_tlink_release;
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}
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static int ata_tlink_match(struct attribute_container *cont,
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struct device *dev)
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{
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struct ata_internal* i = to_ata_internal(ata_scsi_transport_template);
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if (!ata_is_link(dev))
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return 0;
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return &i->link_attr_cont.ac == cont;
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}
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/**
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* ata_tlink_delete -- remove ATA LINK
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* @port: ATA LINK to remove
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*
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* Removes the specified ATA LINK. remove associated ATA device(s) as well.
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*/
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void ata_tlink_delete(struct ata_link *link)
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{
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struct device *dev = &link->tdev;
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struct ata_device *ata_dev;
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ata_for_each_dev(ata_dev, link, ALL) {
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ata_tdev_delete(ata_dev);
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}
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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);
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}
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/**
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* ata_tlink_add -- initialize a transport ATA link structure
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* @link: allocated ata_link structure.
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*
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* Initialize an ATA LINK structure for sysfs. It will be added in the
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* device tree below the ATA PORT it belongs to.
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*
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* Returns %0 on success
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*/
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int ata_tlink_add(struct ata_link *link)
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{
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struct device *dev = &link->tdev;
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struct ata_port *ap = link->ap;
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struct ata_device *ata_dev;
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int error;
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device_initialize(dev);
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dev->parent = &ap->tdev;
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dev->release = ata_tlink_release;
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if (ata_is_host_link(link))
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dev_set_name(dev, "link%d", ap->print_id);
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else
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dev_set_name(dev, "link%d.%d", ap->print_id, link->pmp);
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transport_setup_device(dev);
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error = device_add(dev);
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if (error) {
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goto tlink_err;
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}
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transport_add_device(dev);
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transport_configure_device(dev);
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ata_for_each_dev(ata_dev, link, ALL) {
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error = ata_tdev_add(ata_dev);
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if (error) {
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goto tlink_dev_err;
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}
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}
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return 0;
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tlink_dev_err:
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while (--ata_dev >= link->device) {
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ata_tdev_delete(ata_dev);
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}
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transport_remove_device(dev);
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device_del(dev);
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tlink_err:
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transport_destroy_device(dev);
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put_device(dev);
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return error;
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}
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/*
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* ATA device attributes
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*/
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#define ata_dev_show_class(title, field) \
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static ssize_t \
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show_ata_dev_##field(struct device *dev, \
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struct device_attribute *attr, char *buf) \
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{ \
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struct ata_device *ata_dev = transport_class_to_dev(dev); \
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\
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return get_ata_##title##_names(ata_dev->field, buf); \
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}
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#define ata_dev_attr(title, field) \
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ata_dev_show_class(title, field) \
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static DEVICE_ATTR(field, S_IRUGO, show_ata_dev_##field, NULL)
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ata_dev_attr(class, class);
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ata_dev_attr(xfer, pio_mode);
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ata_dev_attr(xfer, dma_mode);
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ata_dev_attr(xfer, xfer_mode);
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#define ata_dev_show_simple(field, format_string, cast) \
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static ssize_t \
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show_ata_dev_##field(struct device *dev, \
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struct device_attribute *attr, char *buf) \
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{ \
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struct ata_device *ata_dev = transport_class_to_dev(dev); \
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\
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return snprintf(buf, 20, format_string, cast ata_dev->field); \
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}
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|
#define ata_dev_simple_attr(field, format_string, type) \
|
|
ata_dev_show_simple(field, format_string, (type)) \
|
|
static DEVICE_ATTR(field, S_IRUGO, \
|
|
show_ata_dev_##field, NULL)
|
|
|
|
ata_dev_simple_attr(spdn_cnt, "%d\n", int);
|
|
|
|
struct ata_show_ering_arg {
|
|
char* buf;
|
|
int written;
|
|
};
|
|
|
|
static int ata_show_ering(struct ata_ering_entry *ent, void *void_arg)
|
|
{
|
|
struct ata_show_ering_arg* arg = void_arg;
|
|
u64 seconds;
|
|
u32 rem;
|
|
|
|
seconds = div_u64_rem(ent->timestamp, HZ, &rem);
|
|
arg->written += sprintf(arg->buf + arg->written,
|
|
"[%5llu.%09lu]", seconds,
|
|
rem * NSEC_PER_SEC / HZ);
|
|
arg->written += get_ata_err_names(ent->err_mask,
|
|
arg->buf + arg->written);
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t
|
|
show_ata_dev_ering(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct ata_device *ata_dev = transport_class_to_dev(dev);
|
|
struct ata_show_ering_arg arg = { buf, 0 };
|
|
|
|
ata_ering_map(&ata_dev->ering, ata_show_ering, &arg);
|
|
return arg.written;
|
|
}
|
|
|
|
|
|
static DEVICE_ATTR(ering, S_IRUGO, show_ata_dev_ering, NULL);
|
|
|
|
static ssize_t
|
|
show_ata_dev_id(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct ata_device *ata_dev = transport_class_to_dev(dev);
|
|
int written = 0, i = 0;
|
|
|
|
if (ata_dev->class == ATA_DEV_PMP)
|
|
return 0;
|
|
for(i=0;i<ATA_ID_WORDS;i++) {
|
|
written += snprintf(buf+written, 20, "%04x%c",
|
|
ata_dev->id[i],
|
|
((i+1) & 7) ? ' ' : '\n');
|
|
}
|
|
return written;
|
|
}
|
|
|
|
static DEVICE_ATTR(id, S_IRUGO, show_ata_dev_id, NULL);
|
|
|
|
static ssize_t
|
|
show_ata_dev_gscr(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct ata_device *ata_dev = transport_class_to_dev(dev);
|
|
int written = 0, i = 0;
|
|
|
|
if (ata_dev->class != ATA_DEV_PMP)
|
|
return 0;
|
|
for(i=0;i<SATA_PMP_GSCR_DWORDS;i++) {
|
|
written += snprintf(buf+written, 20, "%08x%c",
|
|
ata_dev->gscr[i],
|
|
((i+1) & 3) ? ' ' : '\n');
|
|
}
|
|
if (SATA_PMP_GSCR_DWORDS & 3)
|
|
buf[written-1] = '\n';
|
|
return written;
|
|
}
|
|
|
|
static DEVICE_ATTR(gscr, S_IRUGO, show_ata_dev_gscr, NULL);
|
|
|
|
static ssize_t
|
|
show_ata_dev_trim(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct ata_device *ata_dev = transport_class_to_dev(dev);
|
|
unsigned char *mode;
|
|
|
|
if (!ata_id_has_trim(ata_dev->id))
|
|
mode = "unsupported";
|
|
else if (ata_dev->horkage & ATA_HORKAGE_NOTRIM)
|
|
mode = "forced_unsupported";
|
|
else if (ata_dev->horkage & ATA_HORKAGE_NO_NCQ_TRIM)
|
|
mode = "forced_unqueued";
|
|
else if (ata_fpdma_dsm_supported(ata_dev))
|
|
mode = "queued";
|
|
else
|
|
mode = "unqueued";
|
|
|
|
return snprintf(buf, 20, "%s\n", mode);
|
|
}
|
|
|
|
static DEVICE_ATTR(trim, S_IRUGO, show_ata_dev_trim, NULL);
|
|
|
|
static DECLARE_TRANSPORT_CLASS(ata_dev_class,
|
|
"ata_device", NULL, NULL, NULL);
|
|
|
|
static void ata_tdev_release(struct device *dev)
|
|
{
|
|
}
|
|
|
|
/**
|
|
* ata_is_ata_dev -- check if a struct device represents a ATA device
|
|
* @dev: device to check
|
|
*
|
|
* Returns:
|
|
* %1 if the device represents a ATA device, %0 else
|
|
*/
|
|
static int ata_is_ata_dev(const struct device *dev)
|
|
{
|
|
return dev->release == ata_tdev_release;
|
|
}
|
|
|
|
static int ata_tdev_match(struct attribute_container *cont,
|
|
struct device *dev)
|
|
{
|
|
struct ata_internal* i = to_ata_internal(ata_scsi_transport_template);
|
|
if (!ata_is_ata_dev(dev))
|
|
return 0;
|
|
return &i->dev_attr_cont.ac == cont;
|
|
}
|
|
|
|
/**
|
|
* ata_tdev_free -- free a ATA LINK
|
|
* @dev: ATA PHY to free
|
|
*
|
|
* Frees the specified ATA PHY.
|
|
*
|
|
* Note:
|
|
* This function must only be called on a PHY that has not
|
|
* successfully been added using ata_tdev_add().
|
|
*/
|
|
static void ata_tdev_free(struct ata_device *dev)
|
|
{
|
|
transport_destroy_device(&dev->tdev);
|
|
put_device(&dev->tdev);
|
|
}
|
|
|
|
/**
|
|
* ata_tdev_delete -- remove ATA device
|
|
* @port: ATA PORT to remove
|
|
*
|
|
* Removes the specified ATA device.
|
|
*/
|
|
static void ata_tdev_delete(struct ata_device *ata_dev)
|
|
{
|
|
struct device *dev = &ata_dev->tdev;
|
|
|
|
transport_remove_device(dev);
|
|
device_del(dev);
|
|
ata_tdev_free(ata_dev);
|
|
}
|
|
|
|
|
|
/**
|
|
* ata_tdev_add -- initialize a transport ATA device structure.
|
|
* @ata_dev: ata_dev structure.
|
|
*
|
|
* Initialize an ATA device structure for sysfs. It will be added in the
|
|
* device tree below the ATA LINK device it belongs to.
|
|
*
|
|
* Returns %0 on success
|
|
*/
|
|
static int ata_tdev_add(struct ata_device *ata_dev)
|
|
{
|
|
struct device *dev = &ata_dev->tdev;
|
|
struct ata_link *link = ata_dev->link;
|
|
struct ata_port *ap = link->ap;
|
|
int error;
|
|
|
|
device_initialize(dev);
|
|
dev->parent = &link->tdev;
|
|
dev->release = ata_tdev_release;
|
|
if (ata_is_host_link(link))
|
|
dev_set_name(dev, "dev%d.%d", ap->print_id,ata_dev->devno);
|
|
else
|
|
dev_set_name(dev, "dev%d.%d.0", ap->print_id, link->pmp);
|
|
|
|
transport_setup_device(dev);
|
|
ata_acpi_bind_dev(ata_dev);
|
|
error = device_add(dev);
|
|
if (error) {
|
|
ata_tdev_free(ata_dev);
|
|
return error;
|
|
}
|
|
|
|
transport_add_device(dev);
|
|
transport_configure_device(dev);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Setup / Teardown code
|
|
*/
|
|
|
|
#define SETUP_TEMPLATE(attrb, field, perm, test) \
|
|
i->private_##attrb[count] = dev_attr_##field; \
|
|
i->private_##attrb[count].attr.mode = perm; \
|
|
i->attrb[count] = &i->private_##attrb[count]; \
|
|
if (test) \
|
|
count++
|
|
|
|
#define SETUP_LINK_ATTRIBUTE(field) \
|
|
SETUP_TEMPLATE(link_attrs, field, S_IRUGO, 1)
|
|
|
|
#define SETUP_PORT_ATTRIBUTE(field) \
|
|
SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1)
|
|
|
|
#define SETUP_DEV_ATTRIBUTE(field) \
|
|
SETUP_TEMPLATE(dev_attrs, field, S_IRUGO, 1)
|
|
|
|
/**
|
|
* ata_attach_transport -- instantiate ATA transport template
|
|
*/
|
|
struct scsi_transport_template *ata_attach_transport(void)
|
|
{
|
|
struct ata_internal *i;
|
|
int count;
|
|
|
|
i = kzalloc(sizeof(struct ata_internal), GFP_KERNEL);
|
|
if (!i)
|
|
return NULL;
|
|
|
|
i->t.eh_strategy_handler = ata_scsi_error;
|
|
i->t.user_scan = ata_scsi_user_scan;
|
|
|
|
i->t.host_attrs.ac.attrs = &i->port_attrs[0];
|
|
i->t.host_attrs.ac.class = &ata_port_class.class;
|
|
i->t.host_attrs.ac.match = ata_tport_match;
|
|
transport_container_register(&i->t.host_attrs);
|
|
|
|
i->link_attr_cont.ac.class = &ata_link_class.class;
|
|
i->link_attr_cont.ac.attrs = &i->link_attrs[0];
|
|
i->link_attr_cont.ac.match = ata_tlink_match;
|
|
transport_container_register(&i->link_attr_cont);
|
|
|
|
i->dev_attr_cont.ac.class = &ata_dev_class.class;
|
|
i->dev_attr_cont.ac.attrs = &i->dev_attrs[0];
|
|
i->dev_attr_cont.ac.match = ata_tdev_match;
|
|
transport_container_register(&i->dev_attr_cont);
|
|
|
|
count = 0;
|
|
SETUP_PORT_ATTRIBUTE(nr_pmp_links);
|
|
SETUP_PORT_ATTRIBUTE(idle_irq);
|
|
SETUP_PORT_ATTRIBUTE(port_no);
|
|
BUG_ON(count > ATA_PORT_ATTRS);
|
|
i->port_attrs[count] = NULL;
|
|
|
|
count = 0;
|
|
SETUP_LINK_ATTRIBUTE(hw_sata_spd_limit);
|
|
SETUP_LINK_ATTRIBUTE(sata_spd_limit);
|
|
SETUP_LINK_ATTRIBUTE(sata_spd);
|
|
BUG_ON(count > ATA_LINK_ATTRS);
|
|
i->link_attrs[count] = NULL;
|
|
|
|
count = 0;
|
|
SETUP_DEV_ATTRIBUTE(class);
|
|
SETUP_DEV_ATTRIBUTE(pio_mode);
|
|
SETUP_DEV_ATTRIBUTE(dma_mode);
|
|
SETUP_DEV_ATTRIBUTE(xfer_mode);
|
|
SETUP_DEV_ATTRIBUTE(spdn_cnt);
|
|
SETUP_DEV_ATTRIBUTE(ering);
|
|
SETUP_DEV_ATTRIBUTE(id);
|
|
SETUP_DEV_ATTRIBUTE(gscr);
|
|
SETUP_DEV_ATTRIBUTE(trim);
|
|
BUG_ON(count > ATA_DEV_ATTRS);
|
|
i->dev_attrs[count] = NULL;
|
|
|
|
return &i->t;
|
|
}
|
|
|
|
/**
|
|
* ata_release_transport -- release ATA transport template instance
|
|
* @t: transport template instance
|
|
*/
|
|
void ata_release_transport(struct scsi_transport_template *t)
|
|
{
|
|
struct ata_internal *i = to_ata_internal(t);
|
|
|
|
transport_container_unregister(&i->t.host_attrs);
|
|
transport_container_unregister(&i->link_attr_cont);
|
|
transport_container_unregister(&i->dev_attr_cont);
|
|
|
|
kfree(i);
|
|
}
|
|
|
|
__init int libata_transport_init(void)
|
|
{
|
|
int error;
|
|
|
|
error = transport_class_register(&ata_link_class);
|
|
if (error)
|
|
goto out_unregister_transport;
|
|
error = transport_class_register(&ata_port_class);
|
|
if (error)
|
|
goto out_unregister_link;
|
|
error = transport_class_register(&ata_dev_class);
|
|
if (error)
|
|
goto out_unregister_port;
|
|
return 0;
|
|
|
|
out_unregister_port:
|
|
transport_class_unregister(&ata_port_class);
|
|
out_unregister_link:
|
|
transport_class_unregister(&ata_link_class);
|
|
out_unregister_transport:
|
|
return error;
|
|
|
|
}
|
|
|
|
void __exit libata_transport_exit(void)
|
|
{
|
|
transport_class_unregister(&ata_link_class);
|
|
transport_class_unregister(&ata_port_class);
|
|
transport_class_unregister(&ata_dev_class);
|
|
}
|