drivers/scsi/pcmcia/fdomain_cs.c

Source file repositories/reference/linux-study-clean/drivers/scsi/pcmcia/fdomain_cs.c

File Facts

System
Linux kernel
Corpus path
drivers/scsi/pcmcia/fdomain_cs.c
Extension
.c
Size
2568 bytes
Lines
98
Domain
Driver Families
Bucket
drivers/scsi
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: (GPL-2.0 OR MPL-1.1)
/*
 * Driver for Future Domain-compatible PCMCIA SCSI cards
 * Copyright 2019 Ondrej Zary
 *
 * The initial developer of the original code is David A. Hinds
 * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
 * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <scsi/scsi_host.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>
#include "fdomain.h"

MODULE_AUTHOR("Ondrej Zary, David Hinds");
MODULE_DESCRIPTION("Future Domain PCMCIA SCSI driver");
MODULE_LICENSE("Dual MPL/GPL");

static int fdomain_config_check(struct pcmcia_device *p_dev, void *priv_data)
{
	p_dev->io_lines = 10;
	p_dev->resource[0]->end = FDOMAIN_REGION_SIZE;
	p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
	return pcmcia_request_io(p_dev);
}

static int fdomain_probe(struct pcmcia_device *link)
{
	int ret;
	struct Scsi_Host *sh;

	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
	link->config_regs = PRESENT_OPTION;

	ret = pcmcia_loop_config(link, fdomain_config_check, NULL);
	if (ret)
		return ret;

	ret = pcmcia_enable_device(link);
	if (ret)
		goto fail_disable;

	if (!request_region(link->resource[0]->start, FDOMAIN_REGION_SIZE,
			    "fdomain_cs")) {
		ret = -EBUSY;
		goto fail_disable;
	}

	sh = fdomain_create(link->resource[0]->start, link->irq, 7, &link->dev);
	if (!sh) {
		dev_err(&link->dev, "Controller initialization failed");
		ret = -ENODEV;
		goto fail_release;
	}

	link->priv = sh;

	return 0;

fail_release:
	release_region(link->resource[0]->start, FDOMAIN_REGION_SIZE);
fail_disable:
	pcmcia_disable_device(link);
	return ret;
}

static void fdomain_remove(struct pcmcia_device *link)
{
	fdomain_destroy(link->priv);
	release_region(link->resource[0]->start, FDOMAIN_REGION_SIZE);
	pcmcia_disable_device(link);
}

static const struct pcmcia_device_id fdomain_ids[] = {
	PCMCIA_DEVICE_PROD_ID12("IBM Corp.", "SCSI PCMCIA Card", 0xe3736c88,
				0x859cad20),
	PCMCIA_DEVICE_PROD_ID1("SCSI PCMCIA Adapter Card", 0x8dacb57e),
	PCMCIA_DEVICE_PROD_ID12(" SIMPLE TECHNOLOGY Corporation",
				"SCSI PCMCIA Credit Card Controller",
				0x182bdafe, 0xc80d106f),
	PCMCIA_DEVICE_NULL,
};
MODULE_DEVICE_TABLE(pcmcia, fdomain_ids);

static struct pcmcia_driver fdomain_cs_driver = {
	.owner		= THIS_MODULE,

Annotation

Implementation Notes