eisa.c

Go to the documentation of this file.

/*
 * Virtual EISA root driver.
 * Acts as a placeholder if we don't have a proper EISA bridge.
 *
 * (C) 2003 Marc Zyngier <[email protected]>
 * modified for SNI usage by Thomas Bogendoerfer
 *
 * This code is released under the GPL version 2.
 */

#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/eisa.h>
#include <linux/init.h>

/* The default EISA device parent (virtual root device).
 * Now use a platform device, since that's the obvious choice. */

static struct platform_device eisa_root_dev = {
    .name = "eisa",
    .id   = 0,
};

static struct eisa_root_device eisa_bus_root = {
    .dev           = &eisa_root_dev.dev,
    .bus_base_addr = 0,
    .res           = &ioport_resource,
    .slots         = EISA_MAX_SLOTS,
    .dma_mask      = 0xffffffff,
    .force_probe   = 1,
};

int __init sni_eisa_root_init(void)
{
    int r;

    r = platform_device_register(&eisa_root_dev);
    if (!r)
        return r;

    dev_set_drvdata(&eisa_root_dev.dev, &eisa_bus_root);

    if (eisa_root_register(&eisa_bus_root)) {
        /* A real bridge may have been registered before
         * us. So quietly unregister. */
        platform_device_unregister(&eisa_root_dev);
        return -1;
    }
    return 0;
}