android_kernel_xiaomi_sm8350/drivers/ata/pata_rz1000.c
Tejun Heo 9363c3825e libata: rename SFF functions
SFF functions have confusing names.  Some have sff prefix, some have
bmdma, some std, some pci and some none.  Unify the naming by...

* SFF functions which are common to both BMDMA and non-BMDMA are
  prefixed with ata_sff_.

* SFF functions which are specific to BMDMA are prefixed with
  ata_bmdma_.

* SFF functions which are specific to PCI but apply to both BMDMA and
  non-BMDMA are prefixed with ata_pci_sff_.

* SFF functions which are specific to PCI and BMDMA are prefixed with
  ata_pci_bmdma_.

* Drop generic prefixes from LLD specific routines.  For example,
  bfin_std_dev_select -> bfin_dev_select.

The following renames are noteworthy.

  ata_qc_issue_prot() -> ata_sff_qc_issue()
  ata_pci_default_filter() -> ata_bmdma_mode_filter()
  ata_dev_try_classify() -> ata_sff_dev_classify()

This rename is in preparation of separating SFF support out of libata
core layer.  This patch strictly renames functions and doesn't
introduce any behavior difference.

Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17 15:44:21 -04:00

157 lines
4.0 KiB
C

/*
* RZ1000/1001 driver based upon
*
* linux/drivers/ide/pci/rz1000.c Version 0.06 January 12, 2003
* Copyright (C) 1995-1998 Linus Torvalds & author (see below)
* Principal Author: mlord@pobox.com (Mark Lord)
*
* See linux/MAINTAINERS for address of current maintainer.
*
* This file provides support for disabling the buggy read-ahead
* mode of the RZ1000 IDE chipset, commonly used on Intel motherboards.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>
#define DRV_NAME "pata_rz1000"
#define DRV_VERSION "0.2.4"
/**
* rz1000_set_mode - mode setting function
* @link: ATA link
* @unused: returned device on set_mode failure
*
* Use a non standard set_mode function. We don't want to be tuned. We
* would prefer to be BIOS generic but for the fact our hardware is
* whacked out.
*/
static int rz1000_set_mode(struct ata_link *link, struct ata_device **unused)
{
struct ata_device *dev;
ata_link_for_each_dev(dev, link) {
if (ata_dev_enabled(dev)) {
/* We don't really care */
dev->pio_mode = XFER_PIO_0;
dev->xfer_mode = XFER_PIO_0;
dev->xfer_shift = ATA_SHIFT_PIO;
dev->flags |= ATA_DFLAG_PIO;
ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
}
}
return 0;
}
static struct scsi_host_template rz1000_sht = {
ATA_PIO_SHT(DRV_NAME),
};
static struct ata_port_operations rz1000_port_ops = {
.inherits = &ata_sff_port_ops,
.cable_detect = ata_cable_40wire,
.set_mode = rz1000_set_mode,
};
static int rz1000_fifo_disable(struct pci_dev *pdev)
{
u16 reg;
/* Be exceptionally paranoid as we must be sure to apply the fix */
if (pci_read_config_word(pdev, 0x40, &reg) != 0)
return -1;
reg &= 0xDFFF;
if (pci_write_config_word(pdev, 0x40, reg) != 0)
return -1;
printk(KERN_INFO DRV_NAME ": disabled chipset readahead.\n");
return 0;
}
/**
* rz1000_init_one - Register RZ1000 ATA PCI device with kernel services
* @pdev: PCI device to register
* @ent: Entry in rz1000_pci_tbl matching with @pdev
*
* Configure an RZ1000 interface. This doesn't require much special
* handling except that we *MUST* kill the chipset readahead or the
* user may experience data corruption.
*/
static int rz1000_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
{
static int printed_version;
static const struct ata_port_info info = {
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.port_ops = &rz1000_port_ops
};
const struct ata_port_info *ppi[] = { &info, NULL };
if (!printed_version++)
printk(KERN_DEBUG DRV_NAME " version " DRV_VERSION "\n");
if (rz1000_fifo_disable(pdev) == 0)
return ata_pci_sff_init_one(pdev, ppi, &rz1000_sht, NULL);
printk(KERN_ERR DRV_NAME ": failed to disable read-ahead on chipset..\n");
/* Not safe to use so skip */
return -ENODEV;
}
#ifdef CONFIG_PM
static int rz1000_reinit_one(struct pci_dev *pdev)
{
/* If this fails on resume (which is a "cant happen" case), we
must stop as any progress risks data loss */
if (rz1000_fifo_disable(pdev))
panic("rz1000 fifo");
return ata_pci_device_resume(pdev);
}
#endif
static const struct pci_device_id pata_rz1000[] = {
{ PCI_VDEVICE(PCTECH, PCI_DEVICE_ID_PCTECH_RZ1000), },
{ PCI_VDEVICE(PCTECH, PCI_DEVICE_ID_PCTECH_RZ1001), },
{ },
};
static struct pci_driver rz1000_pci_driver = {
.name = DRV_NAME,
.id_table = pata_rz1000,
.probe = rz1000_init_one,
.remove = ata_pci_remove_one,
#ifdef CONFIG_PM
.suspend = ata_pci_device_suspend,
.resume = rz1000_reinit_one,
#endif
};
static int __init rz1000_init(void)
{
return pci_register_driver(&rz1000_pci_driver);
}
static void __exit rz1000_exit(void)
{
pci_unregister_driver(&rz1000_pci_driver);
}
MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("low-level driver for RZ1000 PCI ATA");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, pata_rz1000);
MODULE_VERSION(DRV_VERSION);
module_init(rz1000_init);
module_exit(rz1000_exit);