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811 lines
20 KiB
811 lines
20 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright 2008 ioogle, Inc. All rights reserved. |
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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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|
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#include "libata.h" |
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#include "libata-transport.h" |
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|
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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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|
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struct scsi_transport_template; |
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struct scsi_transport_template *ata_scsi_transport_template; |
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|
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struct ata_internal { |
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struct scsi_transport_template t; |
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|
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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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|
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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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/* |
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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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|
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|
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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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|
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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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|
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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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|
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|
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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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|
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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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|
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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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|
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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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|
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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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|
|
|
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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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|
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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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/* |
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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 scnprintf(buf, 20, format_string, cast ap->field); \ |
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} |
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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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|
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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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|
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static DECLARE_TRANSPORT_CLASS(ata_port_class, |
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"ata_port", NULL, NULL, NULL); |
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|
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static void ata_tport_release(struct device *dev) |
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{ |
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struct ata_port *ap = tdev_to_port(dev); |
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ata_host_put(ap->host); |
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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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|
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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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/** |
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* ata_tport_delete -- remove ATA PORT |
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* @ap: 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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|
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ata_tlink_delete(&ap->link); |
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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_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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|
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device_initialize(dev); |
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dev->type = &ata_port_type; |
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|
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dev->parent = parent; |
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ata_host_get(ap->host); |
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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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ata_host_put(ap->host); |
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return error; |
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} |
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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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|
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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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|
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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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|
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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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|
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static DECLARE_TRANSPORT_CLASS(ata_link_class, |
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"ata_link", NULL, NULL, NULL); |
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|
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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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/** |
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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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|
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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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* @link: 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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|
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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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|
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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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|
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transport_setup_device(dev); |
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|
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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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|
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transport_add_device(dev); |
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transport_configure_device(dev); |
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|
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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 scnprintf(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) \ |
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ata_dev_show_simple(field, format_string, (type)) \ |
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static DEVICE_ATTR(field, S_IRUGO, \ |
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show_ata_dev_##field, NULL) |
|
|
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ata_dev_simple_attr(spdn_cnt, "%d\n", int); |
|
|
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struct ata_show_ering_arg { |
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char* buf; |
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int written; |
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}; |
|
|
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static int ata_show_ering(struct ata_ering_entry *ent, void *void_arg) |
|
{ |
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struct ata_show_ering_arg* arg = void_arg; |
|
u64 seconds; |
|
u32 rem; |
|
|
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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); |
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struct ata_show_ering_arg arg = { buf, 0 }; |
|
|
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ata_ering_map(&ata_dev->ering, ata_show_ering, &arg); |
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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 += scnprintf(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 += scnprintf(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 scnprintf(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 |
|
* @ata_dev: ATA device 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); |
|
}
|
|
|