// SPDX-License-Identifier: GPL-2.0-or-later

/* SNI RM driver
 *
 * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
**-----------------------------------------------------------------------------
**
**
**-----------------------------------------------------------------------------
 */

/*
 * Based on lasi700.c
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/mm.h>
#include <linux/blkdev.h>
#include <linux/sched.h>
#include <linux/ioport.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>

#include <asm/page.h>
#include <asm/irq.h>
#include <asm/delay.h>

#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_spi.h>

#include "53c700.h"

MODULE_AUTHOR("Thomas Bogendörfer");
MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:snirm_53c710");

#define SNIRM710_CLOCK  32

static struct scsi_host_template snirm710_template = {
        .name           = "SNI RM SCSI 53c710",
        .proc_name      = "snirm_53c710",
        .this_id        = 7,
        .module         = THIS_MODULE,
};

static int snirm710_probe(struct platform_device *dev)
{
        unsigned long base;
        struct NCR_700_Host_Parameters *hostdata;
        struct Scsi_Host *host;
        struct  resource *res;
        int rc;

        res = platform_get_resource(dev, IORESOURCE_MEM, 0);
        if (!res)
                return -ENODEV;

        base = res->start;
        hostdata = kzalloc_obj(*hostdata);
        if (!hostdata)
                return -ENOMEM;

        hostdata->dev = &dev->dev;
        dma_set_mask(&dev->dev, DMA_BIT_MASK(32));
        hostdata->base = ioremap(base, 0x100);
        hostdata->differential = 0;

        hostdata->clock = SNIRM710_CLOCK;
        hostdata->force_le_on_be = 1;
        hostdata->chip710 = 1;
        hostdata->burst_length = 4;

        host = NCR_700_detect(&snirm710_template, hostdata, &dev->dev);
        if (!host)
                goto out_kfree;
        host->this_id = 7;
        host->base = base;
        host->irq = rc = platform_get_irq(dev, 0);
        if (rc < 0)
                goto out_put_host;
        if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) {
                printk(KERN_ERR "snirm710: request_irq failed!\n");
                goto out_put_host;
        }

        dev_set_drvdata(&dev->dev, host);
        scsi_scan_host(host);

        return 0;

 out_put_host:
        scsi_host_put(host);
 out_kfree:
        iounmap(hostdata->base);
        kfree(hostdata);
        return -ENODEV;
}

static void snirm710_driver_remove(struct platform_device *dev)
{
        struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
        struct NCR_700_Host_Parameters *hostdata =
                (struct NCR_700_Host_Parameters *)host->hostdata[0];

        scsi_remove_host(host);
        NCR_700_release(host);
        free_irq(host->irq, host);
        iounmap(hostdata->base);
        kfree(hostdata);
}

static struct platform_driver snirm710_driver = {
        .probe  = snirm710_probe,
        .remove = snirm710_driver_remove,
        .driver = {
                .name   = "snirm_53c710",
        },
};
module_platform_driver(snirm710_driver);