// 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,
        .name           = "fdomain_cs",
        .probe          = fdomain_probe,
        .remove         = fdomain_remove,
        .id_table       = fdomain_ids,
};

module_pcmcia_driver(fdomain_cs_driver);