linux/drivers/ata/pata_atiixp.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * pata_atiixp.c 	- ATI PATA for new ATA layer
 *			  (C) 2005 Red Hat Inc
 *			  (C) 2009-2010 Bartlomiej Zolnierkiewicz
 *
 * Based on
 *
 *  linux/drivers/ide/pci/atiixp.c	Version 0.01-bart2	Feb. 26, 2004
 *
 *  Copyright (C) 2003 ATI Inc. <[email protected]>
 *  Copyright (C) 2004 Bartlomiej Zolnierkiewicz
 *
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>
#include <linux/dmi.h>

#define DRV_NAME …
#define DRV_VERSION …

enum { … };

static const struct dmi_system_id attixp_cable_override_dmi_table[] = …;

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

static DEFINE_SPINLOCK(atiixp_lock);

/**
 *	atiixp_prereset	-	perform reset handling
 *	@link: ATA link
 *	@deadline: deadline jiffies for the operation
 *
 *	Reset sequence checking enable bits to see which ports are
 *	active.
 */

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

/**
 *	atiixp_set_pio_timing	-	set initial PIO mode data
 *	@ap: ATA interface
 *	@adev: ATA device
 *	@pio: Requested PIO
 *
 *	Called by both the pio and dma setup functions to set the controller
 *	timings for PIO transfers. We must load both the mode number and
 *	timing values into the controller.
 */

static void atiixp_set_pio_timing(struct ata_port *ap, struct ata_device *adev, int pio)
{ … }

/**
 *	atiixp_set_piomode	-	set initial PIO mode data
 *	@ap: ATA interface
 *	@adev: ATA device
 *
 *	Called to do the PIO mode setup. We use a shared helper for this
 *	as the DMA setup must also adjust the PIO timing information.
 */

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

/**
 *	atiixp_set_dmamode	-	set initial DMA mode data
 *	@ap: ATA interface
 *	@adev: ATA device
 *
 *	Called to do the DMA mode setup. We use timing tables for most
 *	modes but must tune an appropriate PIO mode to match.
 */

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

/**
 *	atiixp_bmdma_start	-	DMA start callback
 *	@qc: Command in progress
 *
 *	When DMA begins we need to ensure that the UDMA control
 *	register for the channel is correctly set.
 *
 *	Note: The host lock held by the libata layer protects
 *	us from two channels both trying to set DMA bits at once
 */

static void atiixp_bmdma_start(struct ata_queued_cmd *qc)
{ … }

/**
 *	atiixp_bmdma_stop	-	DMA stop callback
 *	@qc: Command in progress
 *
 *	DMA has completed. Clear the UDMA flag as the next operations will
 *	be PIO ones not UDMA data transfer.
 *
 *	Note: The host lock held by the libata layer protects
 *	us from two channels both trying to set DMA bits at once
 */

static void atiixp_bmdma_stop(struct ata_queued_cmd *qc)
{ … }

static const struct scsi_host_template atiixp_sht = …;

static struct ata_port_operations atiixp_port_ops = …;

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

static const struct pci_device_id atiixp[] = …;

static struct pci_driver atiixp_pci_driver = …;

module_pci_driver(…) …;

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