208 lines
6.1 KiB
C
208 lines
6.1 KiB
C
/* $NetBSD: tpm_acpi.c,v 1.4 2014/03/01 16:59:41 maxv Exp $ */
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/*-
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* Copyright (c) 2012 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 2008, 2009 Michael Shalayeff
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* Copyright (c) 2009, 2010 Hans-Jörg Höxer
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* All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* ACPI attachment for the Infineon SLD 9630 TT 1.1 and SLB 9635 TT 1.2
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* trusted platform module. See www.trustedcomputinggroup.org
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: tpm_acpi.c,v 1.4 2014/03/01 16:59:41 maxv Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/bus.h>
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#include <sys/pmf.h>
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#include <dev/ic/tpmreg.h>
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#include <dev/ic/tpmvar.h>
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#include <dev/acpi/acpireg.h>
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#include <dev/acpi/acpivar.h>
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#include <dev/isa/isavar.h>
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#define _COMPONENT ACPI_RESOURCE_COMPONENT
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ACPI_MODULE_NAME ("tpm_acpi")
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static int tpm_acpi_match(device_t, cfdata_t, void *);
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static void tpm_acpi_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(tpm_acpi, sizeof(struct tpm_softc), tpm_acpi_match,
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tpm_acpi_attach, NULL, NULL);
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/*
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* Supported device IDs
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*/
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static const char * const tpm_acpi_ids[] = {
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"IFX0101",
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"IFX0102",
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NULL
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};
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extern struct cfdriver tpm_cd;
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static int
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tpm_acpi_match(device_t parent, cfdata_t match, void *aux)
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{
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struct acpi_attach_args *aa = aux;
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if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
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return 0;
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/* There can be only one. */
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if (tpm_cd.cd_devs && tpm_cd.cd_devs[0])
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return 0;
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#ifdef notyet
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return acpi_match_hid(aa->aa_node->ad_devinfo, tpm_acpi_ids);
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#else
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return 0;
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#endif
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}
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static void
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tpm_acpi_attach(device_t parent, device_t self, void *aux)
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{
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struct tpm_softc *sc = device_private(self);
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struct acpi_attach_args *aa = aux;
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struct acpi_resources res;
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struct acpi_io *io;
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struct acpi_mem *mem;
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struct acpi_irq *irq;
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bus_addr_t base;
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bus_addr_t size;
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int rv, inum;
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sc->sc_dev = self;
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/* Parse our resources */
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rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", &res,
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&acpi_resource_parse_ops_default);
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if (ACPI_FAILURE(rv)) {
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aprint_error_dev(sc->sc_dev, "cannot parse resources %d\n", rv);
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return;
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}
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io = acpi_res_io(&res, 0);
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if (io && tpm_legacy_probe(aa->aa_iot, io->ar_base)) {
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sc->sc_bt = aa->aa_iot;
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base = io->ar_base;
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size = io->ar_length;
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sc->sc_batm = aa->aa_iot;
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sc->sc_init = tpm_legacy_init;
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sc->sc_start = tpm_legacy_start;
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sc->sc_read = tpm_legacy_read;
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sc->sc_write = tpm_legacy_write;
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sc->sc_end = tpm_legacy_end;
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mem = NULL;
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} else {
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mem = acpi_res_mem(&res, 0);
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if (mem == NULL) {
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aprint_error_dev(sc->sc_dev, "cannot find mem\n");
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goto out;
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}
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if (mem->ar_length != TPM_SIZE) {
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aprint_error_dev(sc->sc_dev,
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"wrong size mem %u != %u\n",
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mem->ar_length, TPM_SIZE);
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goto out;
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}
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base = mem->ar_base;
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size = mem->ar_length;
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sc->sc_bt = aa->aa_memt;
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sc->sc_init = tpm_tis12_init;
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sc->sc_start = tpm_tis12_start;
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sc->sc_read = tpm_tis12_read;
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sc->sc_write = tpm_tis12_write;
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sc->sc_end = tpm_tis12_end;
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}
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if (bus_space_map(sc->sc_bt, base, size, 0, &sc->sc_bh)) {
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aprint_error_dev(sc->sc_dev, "cannot map registers\n");
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goto out;
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}
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if (mem && !tpm_tis12_probe(sc->sc_bt, sc->sc_bh)) {
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aprint_error_dev(sc->sc_dev, "1.2 probe failed\n");
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goto out1;
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}
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irq = acpi_res_irq(&res, 0);
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if (irq == NULL)
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inum = -1;
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else
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inum = irq->ar_irq;
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if ((rv = (*sc->sc_init)(sc, inum, device_xname(sc->sc_dev))) != 0) {
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aprint_error_dev(sc->sc_dev, "cannot init device %d\n", rv);
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goto out1;
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}
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if (inum != -1 &&
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(sc->sc_ih = isa_intr_establish(aa->aa_ic, irq->ar_irq,
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IST_EDGE, IPL_TTY, tpm_intr, sc)) == NULL) {
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aprint_error_dev(sc->sc_dev, "cannot establish interrupt\n");
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goto out1;
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}
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if (!pmf_device_register(sc->sc_dev, tpm_suspend, tpm_resume))
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aprint_error_dev(sc->sc_dev, "Cannot set power mgmt handler\n");
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return;
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out1:
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bus_space_unmap(sc->sc_bt, sc->sc_bh, size);
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out:
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acpi_resource_cleanup(&res);
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}
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