Annotation of src/sys/dev/acpi/tpm_acpi.c, Revision 1.3.6.2
1.3.6.2 ! yamt 1: /* $NetBSD$ */
! 2:
! 3: /*-
! 4: * Copyright (c) 2012 The NetBSD Foundation, Inc.
! 5: * All rights reserved.
! 6: *
! 7: * This code is derived from software contributed to The NetBSD Foundation
! 8: * by Christos Zoulas.
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 13: * 1. Redistributions of source code must retain the above copyright
! 14: * notice, this list of conditions and the following disclaimer.
! 15: * 2. Redistributions in binary form must reproduce the above copyright
! 16: * notice, this list of conditions and the following disclaimer in the
! 17: * documentation and/or other materials provided with the distribution.
! 18: *
! 19: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 20: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 21: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 22: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 23: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 24: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 25: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 26: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 27: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 28: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 29: * POSSIBILITY OF SUCH DAMAGE.
! 30: */
! 31: /*
! 32: * Copyright (c) 2008, 2009 Michael Shalayeff
! 33: * Copyright (c) 2009, 2010 Hans-Jörg Höxer
! 34: * All rights reserved.
! 35: *
! 36: * Permission to use, copy, modify, and distribute this software for any
! 37: * purpose with or without fee is hereby granted, provided that the above
! 38: * copyright notice and this permission notice appear in all copies.
! 39: *
! 40: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 41: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 42: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 43: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 44: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN
! 45: * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
! 46: * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 47: */
! 48:
! 49: /*
! 50: * ACPI attachment for the Infineon SLD 9630 TT 1.1 and SLB 9635 TT 1.2
! 51: * trusted platform module. See www.trustedcomputinggroup.org
! 52: */
! 53:
! 54: #include <sys/cdefs.h>
! 55: __KERNEL_RCSID(0, "$NetBSD$");
! 56:
! 57: #include <sys/param.h>
! 58: #include <sys/device.h>
! 59: #include <sys/systm.h>
! 60: #include <sys/device.h>
! 61: #include <sys/bus.h>
! 62: #include <sys/pmf.h>
! 63:
! 64: #include <dev/ic/tpmreg.h>
! 65: #include <dev/ic/tpmvar.h>
! 66:
! 67: #include <dev/acpi/acpireg.h>
! 68: #include <dev/acpi/acpivar.h>
! 69:
! 70: #include <dev/isa/isavar.h>
! 71:
! 72: #define _COMPONENT ACPI_RESOURCE_COMPONENT
! 73: ACPI_MODULE_NAME ("tpm_acpi")
! 74:
! 75: static int tpm_acpi_match(device_t, cfdata_t, void *);
! 76: static void tpm_acpi_attach(device_t, device_t, void *);
! 77:
! 78:
! 79: CFATTACH_DECL_NEW(tpm_acpi, sizeof(struct tpm_softc), tpm_acpi_match,
! 80: tpm_acpi_attach, NULL, NULL);
! 81:
! 82: /*
! 83: * Supported device IDs
! 84: */
! 85:
! 86: static const char * const tpm_acpi_ids[] = {
! 87: "IFX0101",
! 88: "IFX0102",
! 89: NULL
! 90: };
! 91:
! 92: extern struct cfdriver tpm_cd;
! 93:
! 94: static int
! 95: tpm_acpi_match(device_t parent, cfdata_t match, void *aux)
! 96: {
! 97: struct acpi_attach_args *aa = aux;
! 98:
! 99: if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
! 100: return 0;
! 101:
! 102: /* There can be only one. */
! 103: if (tpm_cd.cd_devs && tpm_cd.cd_devs[0])
! 104: return 0;
! 105: #ifdef notyet
! 106: return acpi_match_hid(aa->aa_node->ad_devinfo, tpm_acpi_ids);
! 107: #else
! 108: return 0;
! 109: #endif
! 110: }
! 111:
! 112: static void
! 113: tpm_acpi_attach(device_t parent, device_t self, void *aux)
! 114: {
! 115: struct tpm_softc *sc = device_private(self);
! 116: struct acpi_attach_args *aa = aux;
! 117: struct acpi_resources res;
! 118: struct acpi_io *io;
! 119: struct acpi_mem *mem;
! 120: struct acpi_irq *irq;
! 121: bus_addr_t base;
! 122: bus_addr_t size;
! 123: int rv, inum;
! 124:
! 125: sc->sc_dev = self;
! 126:
! 127: /* Parse our resources */
! 128: rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", &res,
! 129: &acpi_resource_parse_ops_default);
! 130:
! 131: if (ACPI_FAILURE(rv)) {
! 132: aprint_error_dev(sc->sc_dev, "cannot parse resources %d\n", rv);
! 133: return;
! 134: }
! 135:
! 136: io = acpi_res_io(&res, 0);
! 137: if (io && tpm_legacy_probe(aa->aa_iot, io->ar_base)) {
! 138: sc->sc_bt = aa->aa_iot;
! 139: base = io->ar_base;
! 140: size = io->ar_length;
! 141: sc->sc_batm = aa->aa_iot;
! 142: sc->sc_init = tpm_legacy_init;
! 143: sc->sc_start = tpm_legacy_start;
! 144: sc->sc_read = tpm_legacy_read;
! 145: sc->sc_write = tpm_legacy_write;
! 146: sc->sc_end = tpm_legacy_end;
! 147: mem = NULL;
! 148: } else {
! 149: mem = acpi_res_mem(&res, 0);
! 150: if (mem == NULL) {
! 151: aprint_error_dev(sc->sc_dev, "cannot find mem\n");
! 152: goto out;
! 153: }
! 154:
! 155: if (mem->ar_length != TPM_SIZE) {
! 156: aprint_error_dev(sc->sc_dev,
! 157: "wrong size mem %u != %u\n",
! 158: mem->ar_length, TPM_SIZE);
! 159: goto out;
! 160: }
! 161:
! 162: base = mem->ar_base;
! 163: size = mem->ar_length;
! 164: sc->sc_bt = aa->aa_memt;
! 165: sc->sc_init = tpm_tis12_init;
! 166: sc->sc_start = tpm_tis12_start;
! 167: sc->sc_read = tpm_tis12_read;
! 168: sc->sc_write = tpm_tis12_write;
! 169: sc->sc_end = tpm_tis12_end;
! 170: }
! 171:
! 172: if (bus_space_map(sc->sc_bt, base, size, 0, &sc->sc_bh)) {
! 173: aprint_error_dev(sc->sc_dev, "cannot map registers\n");
! 174: goto out;
! 175: }
! 176:
! 177: if (mem && !tpm_tis12_probe(sc->sc_bt, sc->sc_bh)) {
! 178: aprint_error_dev(sc->sc_dev, "1.2 probe failed\n");
! 179: goto out1;
! 180: }
! 181:
! 182: irq = acpi_res_irq(&res, 0);
! 183: if (irq == NULL)
! 184: inum = -1;
! 185: else
! 186: inum = irq->ar_irq;
! 187:
! 188: if ((rv = (*sc->sc_init)(sc, inum, device_xname(sc->sc_dev))) != 0)
! 189: aprint_error_dev(sc->sc_dev, "cannot init device %d\n", rv);
! 190: goto out1;
! 191:
! 192: if (inum != -1 &&
! 193: (sc->sc_ih = isa_intr_establish(aa->aa_ic, irq->ar_irq,
! 194: IST_EDGE, IPL_TTY, tpm_intr, sc)) == NULL) {
! 195: aprint_error_dev(sc->sc_dev, "cannot establish interrupt\n");
! 196: goto out1;
! 197: }
! 198:
! 199: if (!pmf_device_register(sc->sc_dev, tpm_suspend, tpm_resume))
! 200: aprint_error_dev(sc->sc_dev, "Cannot set power mgmt handler\n");
! 201: return;
! 202: out1:
! 203: bus_space_unmap(sc->sc_bt, sc->sc_bh, size);
! 204: out:
! 205: acpi_resource_cleanup(&res);
! 206: }
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