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