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

  /*
      dmx3191d.c - driver for the Domex DMX3191D SCSI card.
      Copyright (C) 2000 by Massimo Piccioni <dafastidio@libero.it>
      Portions Copyright (C) 2004 by Christoph Hellwig <hch@lst.de>
  
      Based on the generic NCR5380 driver by Drew Eckhardt et al.

  */
  
  #include <linux/init.h>
  #include <linux/ioport.h>
  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/pci.h>
  #include <linux/interrupt.h>
  #include <asm/io.h>
  
  #include <scsi/scsi_host.h>
  
  /*

   * Definitions for the generic 5380 driver.

   */

  #define NCR5380_read(reg)		inb(hostdata->base + (reg))
  #define NCR5380_write(reg, value)	outb(value, hostdata->base + (reg))

  #define NCR5380_dma_xfer_len		NCR5380_dma_xfer_none
  #define NCR5380_dma_recv_setup		NCR5380_dma_setup_none
  #define NCR5380_dma_send_setup		NCR5380_dma_setup_none
  #define NCR5380_dma_residual		NCR5380_dma_residual_none

  #define NCR5380_implementation_fields	/* none */

  #include "NCR5380.h"
  #include "NCR5380.c"
  
  #define DMX3191D_DRIVER_NAME	"dmx3191d"
  #define DMX3191D_REGION_LEN	8
  
  
  static struct scsi_host_template dmx3191d_driver_template = {

  	.module			= THIS_MODULE,

  	.proc_name		= DMX3191D_DRIVER_NAME,
  	.name			= "Domex DMX3191D",

  	.info			= NCR5380_info,

  	.queuecommand		= NCR5380_queue_command,
  	.eh_abort_handler	= NCR5380_abort,

  	.eh_host_reset_handler	= NCR5380_host_reset,

  	.can_queue		= 32,
  	.this_id		= 7,
  	.sg_tablesize		= SG_ALL,
  	.cmd_per_lun		= 2,

  	.dma_boundary		= PAGE_SIZE - 1,

  	.cmd_size		= NCR5380_CMD_SIZE,

  };

  static int dmx3191d_probe_one(struct pci_dev *pdev,
  			      const struct pci_device_id *id)

  {
  	struct Scsi_Host *shost;

  	struct NCR5380_hostdata *hostdata;

  	unsigned long io;
  	int error = -ENODEV;
  
  	if (pci_enable_device(pdev))
  		goto out;
  
  	io = pci_resource_start(pdev, 0);
  	if (!request_region(io, DMX3191D_REGION_LEN, DMX3191D_DRIVER_NAME)) {
  		printk(KERN_ERR "dmx3191: region 0x%lx-0x%lx already reserved
  ",
  				io, io + DMX3191D_REGION_LEN);
  		goto out_disable_device;
  	}
  
  	shost = scsi_host_alloc(&dmx3191d_driver_template,
  			sizeof(struct NCR5380_hostdata));
  	if (!shost)
  		goto out_release_region;       

  
  	hostdata = shost_priv(shost);
  	hostdata->base = io;

  	/* This card does not seem to raise an interrupt on pdev->irq.
  	 * Steam-powered SCSI controllers run without an IRQ anyway.
  	 */
  	shost->irq = NO_IRQ;

  	error = NCR5380_init(shost, 0);

  	if (error)
  		goto out_host_put;

  	NCR5380_maybe_reset_bus(shost);

  	pci_set_drvdata(pdev, shost);
  
  	error = scsi_add_host(shost, &pdev->dev);
  	if (error)

  		goto out_exit;

  
  	scsi_scan_host(shost);
  	return 0;

  out_exit:
  	NCR5380_exit(shost);
  out_host_put:
  	scsi_host_put(shost);

   out_release_region:

  	release_region(io, DMX3191D_REGION_LEN);

   out_disable_device:
  	pci_disable_device(pdev);
   out:
  	return error;
  }

  static void dmx3191d_remove_one(struct pci_dev *pdev)

  {
  	struct Scsi_Host *shost = pci_get_drvdata(pdev);

  	struct NCR5380_hostdata *hostdata = shost_priv(shost);
  	unsigned long io = hostdata->base;

  
  	scsi_remove_host(shost);
  
  	NCR5380_exit(shost);

  	scsi_host_put(shost);

  	release_region(io, DMX3191D_REGION_LEN);
  	pci_disable_device(pdev);

  }
  
  static struct pci_device_id dmx3191d_pci_tbl[] = {
  	{PCI_VENDOR_ID_DOMEX, PCI_DEVICE_ID_DOMEX_DMX3191D,
  		PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
  	{ }
  };
  MODULE_DEVICE_TABLE(pci, dmx3191d_pci_tbl);
  
  static struct pci_driver dmx3191d_pci_driver = {
  	.name		= DMX3191D_DRIVER_NAME,
  	.id_table	= dmx3191d_pci_tbl,
  	.probe		= dmx3191d_probe_one,

  	.remove		= dmx3191d_remove_one,

  };

  module_pci_driver(dmx3191d_pci_driver);

  
  MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>");
  MODULE_DESCRIPTION("Domex DMX3191D SCSI driver");
  MODULE_LICENSE("GPL");