f81f335a56
This is one of the hackiest Alpha machines, and the only one without PCI support. Removing this allows cleaning up code in eise and tty drivers in addition to the architecture code. Acked-by: Paul E. McKenney <paulmck@kernel.org> Acked-by: Matt Turner <mattst88@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Virtual EISA root driver.
|
|
* Acts as a placeholder if we don't have a proper EISA bridge.
|
|
*
|
|
* (C) 2003 Marc Zyngier <maz@wild-wind.fr.eu.org>
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/eisa.h>
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/init.h>
|
|
|
|
#if defined(CONFIG_EISA_VLB_PRIMING)
|
|
#define EISA_FORCE_PROBE_DEFAULT 1
|
|
#else
|
|
#define EISA_FORCE_PROBE_DEFAULT 0
|
|
#endif
|
|
|
|
static int force_probe = EISA_FORCE_PROBE_DEFAULT;
|
|
static void virtual_eisa_release (struct device *);
|
|
|
|
/* 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,
|
|
.dev = {
|
|
.release = virtual_eisa_release,
|
|
},
|
|
};
|
|
|
|
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,
|
|
};
|
|
|
|
static void virtual_eisa_release (struct device *dev)
|
|
{
|
|
/* nothing really to do here */
|
|
}
|
|
|
|
static int __init virtual_eisa_root_init (void)
|
|
{
|
|
int r;
|
|
|
|
if ((r = platform_device_register (&eisa_root_dev)))
|
|
return r;
|
|
|
|
eisa_bus_root.force_probe = force_probe;
|
|
|
|
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;
|
|
}
|
|
|
|
module_param (force_probe, int, 0444);
|
|
|
|
device_initcall (virtual_eisa_root_init);
|