/* $NetBSD: tpm_isa.c,v 1.4.2.2 2022/08/29 15:48:30 martin Exp $ */ /* * Copyright (c) 2019 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Maxime Villard. * * 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-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 __KERNEL_RCSID(0, "$NetBSD: tpm_isa.c,v 1.4.2.2 2022/08/29 15:48:30 martin Exp $"); #include #include #include #include #include #include #include #include #include #include "ioconf.h" static int tpm_isa_match(device_t, cfdata_t, void *); static void tpm_isa_attach(device_t, device_t, void *); CFATTACH_DECL_NEW(tpm_isa, sizeof(struct tpm_softc), tpm_isa_match, tpm_isa_attach, NULL, NULL); static int tpm_isa_match(device_t parent, cfdata_t match, void *aux) { struct isa_attach_args *ia = aux; bus_space_tag_t bt = ia->ia_memt; bus_space_handle_t bh; int rv; /* There can be only one. */ if (tpm_cd.cd_devs && tpm_cd.cd_devs[0]) return 0; if (ia->ia_iomem[0].ir_addr == ISA_UNKNOWN_IOMEM) return 0; /* XXX: integer locator sign extension */ if (bus_space_map(bt, (unsigned int)ia->ia_iomem[0].ir_addr, TPM_SPACE_SIZE, 0, &bh)) return 0; if ((rv = (*tpm_intf_tis12.probe)(bt, bh)) == 0) { ia->ia_nio = 0; ia->ia_io[0].ir_size = 0; ia->ia_iomem[0].ir_size = TPM_SPACE_SIZE; } ia->ia_ndrq = 0; bus_space_unmap(bt, bh, TPM_SPACE_SIZE); return (rv == 0) ? 1 : 0; } static void tpm_isa_attach(device_t parent, device_t self, void *aux) { struct tpm_softc *sc = device_private(self); struct isa_attach_args *ia = aux; bus_addr_t base; bus_size_t size; int rv; base = (unsigned int)ia->ia_iomem[0].ir_addr; size = TPM_SPACE_SIZE; aprint_normal("\n"); aprint_naive("\n"); sc->sc_dev = self; sc->sc_ver = TPM_1_2; mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); sc->sc_busy = false; sc->sc_intf = &tpm_intf_tis12; sc->sc_bt = ia->ia_memt; if (bus_space_map(sc->sc_bt, base, size, 0, &sc->sc_bh)) { aprint_error_dev(sc->sc_dev, "cannot map registers\n"); return; } if ((rv = (*sc->sc_intf->init)(sc)) != 0) { aprint_error_dev(sc->sc_dev, "cannot init device, rv=%d\n", rv); bus_space_unmap(sc->sc_bt, sc->sc_bh, size); return; } if (!pmf_device_register(self, tpm_suspend, tpm_resume)) aprint_error_dev(self, "couldn't establish power handler\n"); }