linux/drivers/ata/pata_cmd64x.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * pata_cmd64x.c 	- CMD64x PATA for new ATA layer
 *			  (C) 2005 Red Hat Inc
 *			  Alan Cox <[email protected]>
 *			  (C) 2009-2010 Bartlomiej Zolnierkiewicz
 *			  (C) 2012 MontaVista Software, LLC <[email protected]>
 *
 * Based upon
 * linux/drivers/ide/pci/cmd64x.c		Version 1.30	Sept 10, 2002
 *
 * cmd64x.c: Enable interrupts at initialization time on Ultra/PCI machines.
 *           Note, this driver is not used at all on other systems because
 *           there the "BIOS" has done all of the following already.
 *           Due to massive hardware bugs, UltraDMA is only supported
 *           on the 646U2 and not on the 646U.
 *
 * Copyright (C) 1998		Eddie C. Dost  ([email protected])
 * Copyright (C) 1998		David S. Miller ([email protected])
 *
 * Copyright (C) 1999-2002	Andre Hedrick <[email protected]>
 *
 * TODO
 *	Testing work
 */

#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>

#define DRV_NAME …
#define DRV_VERSION …

/*
 * CMD64x specific registers definition.
 */

enum { … };

static int cmd648_cable_detect(struct ata_port *ap)
{ … }

/**
 *	cmd64x_set_timing	-	set PIO and MWDMA timing
 *	@ap: ATA interface
 *	@adev: ATA device
 *	@mode: mode
 *
 *	Called to do the PIO and MWDMA mode setup.
 */

static void cmd64x_set_timing(struct ata_port *ap, struct ata_device *adev, u8 mode)
{ … }

/**
 *	cmd64x_set_piomode	-	set initial PIO mode data
 *	@ap: ATA interface
 *	@adev: ATA device
 *
 *	Used when configuring the devices ot set the PIO timings. All the
 *	actual work is done by the PIO/MWDMA setting helper
 */

static void cmd64x_set_piomode(struct ata_port *ap, struct ata_device *adev)
{ … }

/**
 *	cmd64x_set_dmamode	-	set initial DMA mode data
 *	@ap: ATA interface
 *	@adev: ATA device
 *
 *	Called to do the DMA mode setup.
 */

static void cmd64x_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{ … }

/**
 *	cmd64x_sff_irq_check	-	check IDE interrupt
 *	@ap: ATA interface
 *
 *	Check IDE interrupt in CFR/ARTTIM23 registers.
 */

static bool cmd64x_sff_irq_check(struct ata_port *ap)
{ … }

/**
 *	cmd64x_sff_irq_clear	-	clear IDE interrupt
 *	@ap: ATA interface
 *
 *	Clear IDE interrupt in CFR/ARTTIM23 and DMA status registers.
 */

static void cmd64x_sff_irq_clear(struct ata_port *ap)
{ … }

/**
 *	cmd648_sff_irq_check	-	check IDE interrupt
 *	@ap: ATA interface
 *
 *	Check IDE interrupt in MRDMODE register.
 */

static bool cmd648_sff_irq_check(struct ata_port *ap)
{ … }

/**
 *	cmd648_sff_irq_clear	-	clear IDE interrupt
 *	@ap: ATA interface
 *
 *	Clear IDE interrupt in MRDMODE and DMA status registers.
 */

static void cmd648_sff_irq_clear(struct ata_port *ap)
{ … }

/**
 *	cmd646r1_bmdma_stop	-	DMA stop callback
 *	@qc: Command in progress
 *
 *	Stub for now while investigating the r1 quirk in the old driver.
 */

static void cmd646r1_bmdma_stop(struct ata_queued_cmd *qc)
{ … }

static const struct scsi_host_template cmd64x_sht = …;

static const struct ata_port_operations cmd64x_base_ops = …;

static struct ata_port_operations cmd64x_port_ops = …;

static struct ata_port_operations cmd646r1_port_ops = …;

static struct ata_port_operations cmd646r3_port_ops = …;

static struct ata_port_operations cmd648_port_ops = …;

static void cmd64x_fixup(struct pci_dev *pdev)
{ … }

static int cmd64x_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
{ … }

#ifdef CONFIG_PM_SLEEP
static int cmd64x_reinit_one(struct pci_dev *pdev)
{ … }
#endif

static const struct pci_device_id cmd64x[] = …;

static struct pci_driver cmd64x_pci_driver = …;

module_pci_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;
MODULE_DEVICE_TABLE(pci, cmd64x);
MODULE_VERSION(…);