101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
/*
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* This file provides autodetection for ISA PnP IDE interfaces.
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* It was tested with "ESS ES1868 Plug and Play AudioDrive" IDE interface.
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*
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* Copyright (C) 2000 Andrey Panin <pazke@donpac.ru>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* You should have received a copy of the GNU General Public License
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* (for example /usr/src/linux/COPYING); if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/init.h>
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#include <linux/pnp.h>
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#include <linux/ide.h>
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#include <linux/module.h>
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#define DRV_NAME "ide-pnp"
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/* Add your devices here :)) */
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static const struct pnp_device_id idepnp_devices[] = {
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/* Generic ESDI/IDE/ATA compatible hard disk controller */
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{.id = "PNP0600", .driver_data = 0},
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{.id = ""}
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};
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static const struct ide_port_info ide_pnp_port_info = {
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.host_flags = IDE_HFLAG_NO_DMA,
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.chipset = ide_generic,
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};
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static int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
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{
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struct ide_host *host;
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unsigned long base, ctl;
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int rc;
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struct ide_hw hw, *hws[] = { &hw };
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printk(KERN_INFO DRV_NAME ": generic PnP IDE interface\n");
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if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
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return -1;
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base = pnp_port_start(dev, 0);
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ctl = pnp_port_start(dev, 1);
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if (!request_region(base, 8, DRV_NAME)) {
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printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
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DRV_NAME, base, base + 7);
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return -EBUSY;
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}
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if (!request_region(ctl, 1, DRV_NAME)) {
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printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
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DRV_NAME, ctl);
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release_region(base, 8);
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return -EBUSY;
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}
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memset(&hw, 0, sizeof(hw));
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ide_std_init_ports(&hw, base, ctl);
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hw.irq = pnp_irq(dev, 0);
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rc = ide_host_add(&ide_pnp_port_info, hws, 1, &host);
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if (rc)
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goto out;
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pnp_set_drvdata(dev, host);
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return 0;
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out:
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release_region(ctl, 1);
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release_region(base, 8);
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return rc;
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}
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static void idepnp_remove(struct pnp_dev *dev)
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{
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struct ide_host *host = pnp_get_drvdata(dev);
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ide_host_remove(host);
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release_region(pnp_port_start(dev, 1), 1);
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release_region(pnp_port_start(dev, 0), 8);
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}
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static struct pnp_driver idepnp_driver = {
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.name = "ide",
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.id_table = idepnp_devices,
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.probe = idepnp_probe,
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.remove = idepnp_remove,
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};
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module_pnp_driver(idepnp_driver);
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MODULE_LICENSE("GPL");
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