linux/drivers/ata/pata_acpi.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *	ACPI PATA driver
 *
 *	(c) 2007 Red Hat
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/gfp.h>
#include <linux/acpi.h>
#include <linux/libata.h>
#include <linux/ata.h>
#include <scsi/scsi_host.h>

#define DRV_NAME …
#define DRV_VERSION …

struct pata_acpi { … };

/**
 *	pacpi_pre_reset	-	check for 40/80 pin
 *	@link: ATA link
 *	@deadline: deadline jiffies for the operation
 *
 *	Perform the PATA port setup we need.
 */

static int pacpi_pre_reset(struct ata_link *link, unsigned long deadline)
{ … }

/**
 *	pacpi_cable_detect	-	cable type detection
 *	@ap: port to detect
 *
 *	Perform device specific cable detection
 */

static int pacpi_cable_detect(struct ata_port *ap)
{ … }

/**
 *	pacpi_discover_modes	-	filter non ACPI modes
 *	@ap: ATA port
 *	@adev: ATA device
 *
 *	Try the modes available and see which ones the ACPI method will
 *	set up sensibly. From this we get a mask of ACPI modes we can use
 */

static unsigned long pacpi_discover_modes(struct ata_port *ap, struct ata_device *adev)
{ … }

/**
 *	pacpi_mode_filter	-	mode filter for ACPI
 *	@adev: device
 *	@mask: mask of valid modes
 *
 *	Filter the valid mode list according to our own specific rules, in
 *	this case the list of discovered valid modes obtained by ACPI probing
 */

static unsigned int pacpi_mode_filter(struct ata_device *adev, unsigned int mask)
{ … }

/**
 *	pacpi_set_piomode	-	set initial PIO mode data
 *	@ap: ATA interface
 *	@adev: ATA device
 */

static void pacpi_set_piomode(struct ata_port *ap, struct ata_device *adev)
{ … }

/**
 *	pacpi_set_dmamode	-	set initial DMA mode data
 *	@ap: ATA interface
 *	@adev: ATA device
 */

static void pacpi_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{ … }

/**
 *	pacpi_qc_issue	-	command issue
 *	@qc: command pending
 *
 *	Called when the libata layer is about to issue a command. We wrap
 *	this interface so that we can load the correct ATA timings if
 *	necessary.
 */

static unsigned int pacpi_qc_issue(struct ata_queued_cmd *qc)
{ … }

/**
 *	pacpi_port_start	-	port setup
 *	@ap: ATA port being set up
 *
 *	Use the port_start hook to maintain private control structures
 */

static int pacpi_port_start(struct ata_port *ap)
{ … }

static const struct scsi_host_template pacpi_sht = …;

static struct ata_port_operations pacpi_ops = …;


/**
 *	pacpi_init_one - Register ACPI ATA PCI device with kernel services
 *	@pdev: PCI device to register
 *	@id: PCI device ID
 *
 *	Called from kernel PCI layer.
 *
 *	LOCKING:
 *	Inherited from PCI layer (may sleep).
 *
 *	RETURNS:
 *	Zero on success, or -ERRNO value.
 */

static int pacpi_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
{ … }

static const struct pci_device_id pacpi_pci_tbl[] = …;

static struct pci_driver pacpi_pci_driver = …;

module_pci_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;
MODULE_DEVICE_TABLE(pci, pacpi_pci_tbl);
MODULE_VERSION(…);