2010-05-26 03:31:38 +08:00
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/*
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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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2010-08-20 04:11:32 +08:00
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#include <linux/slab.h>
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2010-05-26 03:31:38 +08:00
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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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2011-12-05 09:20:28 +08:00
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#include <linux/pm_runtime.h>
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2010-05-26 03:31:38 +08:00
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#include "libata.h"
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#include "libata-transport.h"
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2013-05-15 02:48:40 +08:00
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#define ATA_PORT_ATTRS 3
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2010-05-26 03:31:38 +08:00
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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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2014-11-05 20:08:21 +08:00
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{ ATA_DEV_ZAC, "zac" },
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2010-05-26 03:31:38 +08:00
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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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2013-05-15 02:48:40 +08:00
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ata_port_simple_attr(local_port_no, port_no, "%u\n", unsigned int);
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2010-05-26 03:31:38 +08:00
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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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put_device(dev->parent);
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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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2012-04-17 09:04:41 +08:00
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static int ata_is_port(const struct device *dev)
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2010-05-26 03:31:38 +08:00
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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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2011-12-05 09:20:27 +08:00
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dev->type = &ata_port_type;
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2010-05-26 03:31:38 +08:00
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dev->parent = get_device(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: rework the ata acpi bind support
Binding ACPI handle to SCSI device has several drawbacks, namely:
1 During ATA device initialization time, ACPI handle will be needed
while SCSI devices are not created yet. So each time ACPI handle is
needed, instead of retrieving the handle by ACPI_HANDLE macro,
a namespace scan is performed to find the handle for the corresponding
ATA device. This is inefficient, and also expose a restriction on
calling path not holding any lock.
2 The binding to SCSI device tree makes code complex, while at the same
time doesn't bring us any benefit. All ACPI handlings are still done
in ATA module, not in SCSI.
Rework the ATA ACPI binding code to bind ACPI handle to ATA transport
devices(ATA port and ATA device). The binding needs to be done only once,
since the ATA transport devices do not go away with hotplug. And due to
this, the flush_work call in hotplug handler for ATA bay is no longer
needed.
Tested on an Intel test platform for binding and runtime power off for
ODD(ZPODD) and hard disk; on an ASUS S400C for binding and normal boot
and S3, where its SATA port node has _SDD and _GTF control methods when
configured as an AHCI controller and its PATA device node has _GTF
control method when configured as an IDE controller. SATA PMP binding
and ATA hotplug is not tested.
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Tested-by: Dirk Griesbach <spamthis@freenet.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
2013-08-23 10:17:54 +08:00
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ata_acpi_bind_port(ap);
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2010-05-26 03:31:38 +08:00
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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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[libata] enable ata port async suspend
This saves devices suspend/resume time.
Tested system suspend/resume with SATA IDE/AHCI mode 3 times.
Below is the time took for devices suspend/resume.
SATA mode vanilla-kernel patched-kernel
--------- --------------------- ---------------------
IDE suspend: 0.744 suspend: 0.432
(0.716, 0.768, 0.748) (0.440, 0.428, 0.428)
resume: 5.084 resume: 2.209
(5.100, 5.064, 5.088) (2.168, 2.232, 2.228)
AHCI: suspend: 0.725 suspend: 0.449
(0.740, 0.708, 0.728) (0.456, 0.448, 0.444)
resume: 2.556 resume: 1.896
(2.604, 2.492, 2.572) (1.932, 1.872, 1.884)
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-01-16 13:23:23 +08:00
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device_enable_async_suspend(dev);
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2011-12-05 09:20:28 +08:00
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pm_runtime_set_active(dev);
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pm_runtime_enable(dev);
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2012-04-18 09:29:47 +08:00
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pm_runtime_forbid(dev);
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2011-12-05 09:20:28 +08:00
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2010-05-26 03:31:38 +08:00
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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:
|
|
|
|
transport_remove_device(dev);
|
|
|
|
device_del(dev);
|
|
|
|
|
|
|
|
tport_err:
|
|
|
|
transport_destroy_device(dev);
|
|
|
|
put_device(dev);
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ATA link attributes
|
|
|
|
*/
|
2013-10-26 07:28:57 +08:00
|
|
|
static int noop(int x) { return x; }
|
2010-05-26 03:31:38 +08:00
|
|
|
|
2013-10-26 07:28:57 +08:00
|
|
|
#define ata_link_show_linkspeed(field, format) \
|
2010-05-26 03:31:38 +08:00
|
|
|
static ssize_t \
|
|
|
|
show_ata_link_##field(struct device *dev, \
|
|
|
|
struct device_attribute *attr, char *buf) \
|
|
|
|
{ \
|
|
|
|
struct ata_link *link = transport_class_to_link(dev); \
|
|
|
|
\
|
2013-10-26 07:28:57 +08:00
|
|
|
return sprintf(buf, "%s\n", sata_spd_string(format(link->field))); \
|
2010-05-26 03:31:38 +08:00
|
|
|
}
|
|
|
|
|
2013-10-26 07:28:57 +08:00
|
|
|
#define ata_link_linkspeed_attr(field, format) \
|
|
|
|
ata_link_show_linkspeed(field, format) \
|
2010-05-26 03:31:38 +08:00
|
|
|
static DEVICE_ATTR(field, S_IRUGO, show_ata_link_##field, NULL)
|
|
|
|
|
2013-10-26 07:28:57 +08:00
|
|
|
ata_link_linkspeed_attr(hw_sata_spd_limit, fls);
|
|
|
|
ata_link_linkspeed_attr(sata_spd_limit, fls);
|
|
|
|
ata_link_linkspeed_attr(sata_spd, noop);
|
2010-05-26 03:31:38 +08:00
|
|
|
|
|
|
|
|
|
|
|
static DECLARE_TRANSPORT_CLASS(ata_link_class,
|
|
|
|
"ata_link", NULL, NULL, NULL);
|
|
|
|
|
|
|
|
static void ata_tlink_release(struct device *dev)
|
|
|
|
{
|
|
|
|
put_device(dev->parent);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ata_is_link -- check if a struct device represents a ATA link
|
|
|
|
* @dev: device to check
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* %1 if the device represents a ATA link, %0 else
|
|
|
|
*/
|
2012-04-17 09:04:41 +08:00
|
|
|
static int ata_is_link(const struct device *dev)
|
2010-05-26 03:31:38 +08:00
|
|
|
{
|
|
|
|
return dev->release == ata_tlink_release;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ata_tlink_match(struct attribute_container *cont,
|
|
|
|
struct device *dev)
|
|
|
|
{
|
|
|
|
struct ata_internal* i = to_ata_internal(ata_scsi_transport_template);
|
|
|
|
if (!ata_is_link(dev))
|
|
|
|
return 0;
|
|
|
|
return &i->link_attr_cont.ac == cont;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ata_tlink_delete -- remove ATA LINK
|
|
|
|
* @port: ATA LINK to remove
|
|
|
|
*
|
|
|
|
* Removes the specified ATA LINK. remove associated ATA device(s) as well.
|
|
|
|
*/
|
|
|
|
void ata_tlink_delete(struct ata_link *link)
|
|
|
|
{
|
|
|
|
struct device *dev = &link->tdev;
|
|
|
|
struct ata_device *ata_dev;
|
|
|
|
|
|
|
|
ata_for_each_dev(ata_dev, link, ALL) {
|
|
|
|
ata_tdev_delete(ata_dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
transport_remove_device(dev);
|
|
|
|
device_del(dev);
|
|
|
|
transport_destroy_device(dev);
|
|
|
|
put_device(dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ata_tlink_add -- initialize a transport ATA link structure
|
|
|
|
* @link: allocated ata_link structure.
|
|
|
|
*
|
|
|
|
* Initialize an ATA LINK structure for sysfs. It will be added in the
|
|
|
|
* device tree below the ATA PORT it belongs to.
|
|
|
|
*
|
|
|
|
* Returns %0 on success
|
|
|
|
*/
|
|
|
|
int ata_tlink_add(struct ata_link *link)
|
|
|
|
{
|
|
|
|
struct device *dev = &link->tdev;
|
|
|
|
struct ata_port *ap = link->ap;
|
|
|
|
struct ata_device *ata_dev;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
device_initialize(dev);
|
|
|
|
dev->parent = get_device(&ap->tdev);
|
|
|
|
dev->release = ata_tlink_release;
|
|
|
|
if (ata_is_host_link(link))
|
|
|
|
dev_set_name(dev, "link%d", ap->print_id);
|
|
|
|
else
|
|
|
|
dev_set_name(dev, "link%d.%d", ap->print_id, link->pmp);
|
|
|
|
|
|
|
|
transport_setup_device(dev);
|
|
|
|
|
|
|
|
error = device_add(dev);
|
|
|
|
if (error) {
|
|
|
|
goto tlink_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
transport_add_device(dev);
|
|
|
|
transport_configure_device(dev);
|
|
|
|
|
|
|
|
ata_for_each_dev(ata_dev, link, ALL) {
|
|
|
|
error = ata_tdev_add(ata_dev);
|
|
|
|
if (error) {
|
|
|
|
goto tlink_dev_err;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
tlink_dev_err:
|
|
|
|
while (--ata_dev >= link->device) {
|
|
|
|
ata_tdev_delete(ata_dev);
|
|
|
|
}
|
|
|
|
transport_remove_device(dev);
|
|
|
|
device_del(dev);
|
|
|
|
tlink_err:
|
|
|
|
transport_destroy_device(dev);
|
|
|
|
put_device(dev);
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ATA device attributes
|
|
|
|
*/
|
|
|
|
|
|
|
|
#define ata_dev_show_class(title, field) \
|
|
|
|
static ssize_t \
|
|
|
|
show_ata_dev_##field(struct device *dev, \
|
|
|
|
struct device_attribute *attr, char *buf) \
|
|
|
|
{ \
|
|
|
|
struct ata_device *ata_dev = transport_class_to_dev(dev); \
|
|
|
|
\
|
|
|
|
return get_ata_##title##_names(ata_dev->field, buf); \
|
|
|
|
}
|
|
|
|
|
|
|
|
#define ata_dev_attr(title, field) \
|
|
|
|
ata_dev_show_class(title, field) \
|
|
|
|
static DEVICE_ATTR(field, S_IRUGO, show_ata_dev_##field, NULL)
|
|
|
|
|
|
|
|
ata_dev_attr(class, class);
|
|
|
|
ata_dev_attr(xfer, pio_mode);
|
|
|
|
ata_dev_attr(xfer, dma_mode);
|
|
|
|
ata_dev_attr(xfer, xfer_mode);
|
|
|
|
|
|
|
|
|
|
|
|
#define ata_dev_show_simple(field, format_string, cast) \
|
|
|
|
static ssize_t \
|
|
|
|
show_ata_dev_##field(struct device *dev, \
|
|
|
|
struct device_attribute *attr, char *buf) \
|
|
|
|
{ \
|
|
|
|
struct ata_device *ata_dev = transport_class_to_dev(dev); \
|
|
|
|
\
|
|
|
|
return snprintf(buf, 20, format_string, cast ata_dev->field); \
|
|
|
|
}
|
|
|
|
|
|
|
|
#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;
|
|
|
|
struct timespec time;
|
|
|
|
|
|
|
|
jiffies_to_timespec(ent->timestamp,&time);
|
|
|
|
arg->written += sprintf(arg->buf + arg->written,
|
|
|
|
"[%5lu.%06lu]",
|
|
|
|
time.tv_sec, time.tv_nsec);
|
|
|
|
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);
|
|
|
|
|
2015-05-05 09:54:19 +08:00
|
|
|
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";
|
2015-07-15 19:54:36 +08:00
|
|
|
else if (ata_dev->horkage & ATA_HORKAGE_NOTRIM)
|
|
|
|
mode = "forced_unsupported";
|
2015-05-05 09:54:19 +08:00
|
|
|
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);
|
|
|
|
|
2010-05-26 03:31:38 +08:00
|
|
|
static DECLARE_TRANSPORT_CLASS(ata_dev_class,
|
|
|
|
"ata_device", NULL, NULL, NULL);
|
|
|
|
|
|
|
|
static void ata_tdev_release(struct device *dev)
|
|
|
|
{
|
|
|
|
put_device(dev->parent);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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
|
|
|
|
*/
|
2012-04-17 09:04:41 +08:00
|
|
|
static int ata_is_ata_dev(const struct device *dev)
|
2010-05-26 03:31:38 +08:00
|
|
|
{
|
|
|
|
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 = get_device(&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: rework the ata acpi bind support
Binding ACPI handle to SCSI device has several drawbacks, namely:
1 During ATA device initialization time, ACPI handle will be needed
while SCSI devices are not created yet. So each time ACPI handle is
needed, instead of retrieving the handle by ACPI_HANDLE macro,
a namespace scan is performed to find the handle for the corresponding
ATA device. This is inefficient, and also expose a restriction on
calling path not holding any lock.
2 The binding to SCSI device tree makes code complex, while at the same
time doesn't bring us any benefit. All ACPI handlings are still done
in ATA module, not in SCSI.
Rework the ATA ACPI binding code to bind ACPI handle to ATA transport
devices(ATA port and ATA device). The binding needs to be done only once,
since the ATA transport devices do not go away with hotplug. And due to
this, the flush_work call in hotplug handler for ATA bay is no longer
needed.
Tested on an Intel test platform for binding and runtime power off for
ODD(ZPODD) and hard disk; on an ASUS S400C for binding and normal boot
and S3, where its SATA port node has _SDD and _GTF control methods when
configured as an AHCI controller and its PATA device node has _GTF
control method when configured as an IDE controller. SATA PMP binding
and ATA hotplug is not tested.
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Tested-by: Dirk Griesbach <spamthis@freenet.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
2013-08-23 10:17:54 +08:00
|
|
|
ata_acpi_bind_dev(ata_dev);
|
2010-05-26 03:31:38 +08:00
|
|
|
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.eh_timed_out = ata_scsi_timed_out;
|
|
|
|
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);
|
2013-05-15 02:48:40 +08:00
|
|
|
SETUP_PORT_ATTRIBUTE(port_no);
|
2010-05-26 03:31:38 +08:00
|
|
|
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);
|
2015-05-05 09:54:19 +08:00
|
|
|
SETUP_DEV_ATTRIBUTE(trim);
|
2010-05-26 03:31:38 +08:00
|
|
|
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);
|
|
|
|
}
|