xref: /freebsd/sys/dev/tpm/tpm_isa.c (revision fdafd315ad0d0f28a11b9fb4476a9ab059c62b92)

/*
 * Copyright (c) 2008, 2009 Michael Shalayeff
 * Copyright (c) 2009, 2010 Hans-Joerg Hoexer
 * All rights reserved.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN
 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/proc.h>

#ifdef __FreeBSD__
#include <sys/module.h>
#include <sys/conf.h>
#include <sys/uio.h>
#include <sys/bus.h>

#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>

#include <machine/md_var.h>

#include <isa/isareg.h>
#include <isa/isavar.h>
#else
#include <sys/device.h>

#include <machine/cpu.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <machine/conf.h>

#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#endif
#include "tpmvar.h"

static int
tpm_isa_probe(device_t dev)
{
	bus_space_tag_t iot;
	bus_space_handle_t ioh;
	struct resource *mem_res;
	int rv, mem_rid;

	mem_rid = 0;
	mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &mem_rid,
	    RF_ACTIVE);
	if (mem_res == NULL)
		return (ENXIO);
	iot = rman_get_bustag(mem_res);
	ioh = rman_get_bushandle(mem_res);

	if ((rv = tpm_tis12_probe(iot, ioh)))
		device_set_desc(dev, "Trusted Platform Module");

	bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res);
	return rv ? 0 : ENXIO;
}

static device_method_t tpm_methods[] = {
#if 0
	DEVMETHOD(device_identify,	tpm_identify),
#endif
	DEVMETHOD(device_probe,		tpm_isa_probe),
	DEVMETHOD(device_attach,	tpm_attach),
	DEVMETHOD(device_detach,	tpm_detach),
	DEVMETHOD(device_suspend,	tpm_suspend),
	DEVMETHOD(device_resume,	tpm_resume),
	{ 0, 0 }
};

static driver_t tpm_driver = {
	"tpm", tpm_methods, sizeof(struct tpm_softc),
};

DRIVER_MODULE(tpm, isa, tpm_driver, 0, 0);