Current Path : /sys/dev/acpica/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/dev/acpica/acpi_quirk.c |
/*- * Copyright (c) 2004 Nate Lawson (SDG) * All rights reserved. * * 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 AUTHOR 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 AUTHOR 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. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/dev/acpica/acpi_quirk.c 193530 2009-06-05 18:44:36Z jkim $"); #include <sys/param.h> #include <sys/bus.h> #include <contrib/dev/acpica/include/acpi.h> #include <dev/acpica/acpivar.h> enum ops_t { OP_NONE, OP_LEQ, OP_GEQ, OP_EQL, }; enum val_t { OEM, OEM_REV, CREATOR, CREATOR_REV, }; struct acpi_q_rule { char sig[ACPI_NAME_SIZE]; /* Table signature to match */ enum val_t val; union { char *id; enum ops_t op; } x; union { char *tid; int rev; } y; }; struct acpi_q_entry { const struct acpi_q_rule *match; int quirks; }; #include "acpi_quirks.h" static int aq_revcmp(int revision, enum ops_t op, int value); static int aq_strcmp(char *actual, char *possible); static int aq_match_header(ACPI_TABLE_HEADER *hdr, const struct acpi_q_rule *match); static int aq_revcmp(int revision, enum ops_t op, int value) { switch (op) { case OP_LEQ: if (revision <= value) return (TRUE); break; case OP_GEQ: if (revision >= value) return (TRUE); break; case OP_EQL: if (revision == value) return (TRUE); break; case OP_NONE: return (TRUE); default: panic("aq_revcmp: invalid op %d", op); } return (FALSE); } static int aq_strcmp(char *actual, char *possible) { if (actual == NULL || possible == NULL) return (TRUE); return (strncmp(actual, possible, strlen(possible)) == 0); } static int aq_match_header(ACPI_TABLE_HEADER *hdr, const struct acpi_q_rule *match) { int result; result = FALSE; switch (match->val) { case OEM: if (aq_strcmp(hdr->OemId, match->x.id) && aq_strcmp(hdr->OemTableId, match->y.tid)) result = TRUE; break; case CREATOR: if (aq_strcmp(hdr->AslCompilerId, match->x.id)) result = TRUE; break; case OEM_REV: if (aq_revcmp(hdr->OemRevision, match->x.op, match->y.rev)) result = TRUE; break; case CREATOR_REV: if (aq_revcmp(hdr->AslCompilerRevision, match->x.op, match->y.rev)) result = TRUE; break; } return (result); } int acpi_table_quirks(int *quirks) { const struct acpi_q_entry *entry; const struct acpi_q_rule *match; ACPI_TABLE_HEADER fadt, dsdt, xsdt, *hdr; int done; /* First, allow the machdep system to set its idea of quirks. */ KASSERT(quirks != NULL, ("acpi quirks ptr is NULL")); acpi_machdep_quirks(quirks); if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_FADT, 0, &fadt))) bzero(&fadt, sizeof(fadt)); if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_DSDT, 0, &dsdt))) bzero(&dsdt, sizeof(dsdt)); if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_XSDT, 0, &xsdt))) bzero(&xsdt, sizeof(xsdt)); /* Then, override the quirks with any matched from table signatures. */ for (entry = acpi_quirks_table; entry->match; entry++) { done = TRUE; for (match = entry->match; match->sig[0] != '\0'; match++) { if (!strncmp(match->sig, "FADT", ACPI_NAME_SIZE)) hdr = &fadt; else if (!strncmp(match->sig, ACPI_SIG_DSDT, ACPI_NAME_SIZE)) hdr = &dsdt; else if (!strncmp(match->sig, ACPI_SIG_XSDT, ACPI_NAME_SIZE)) hdr = &xsdt; else panic("invalid quirk header\n"); /* If we don't match any, skip to the next entry. */ if (aq_match_header(hdr, match) == FALSE) { done = FALSE; break; } } /* If all entries matched, update the quirks and return. */ if (done) { *quirks = entry->quirks; break; } } return (0); }