184 lines
4.6 KiB
C
184 lines
4.6 KiB
C
/*-
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* Copyright (c) 2004 Nate Lawson (SDG)
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* All rights reserved.
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <contrib/dev/acpica/include/acpi.h>
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#include <dev/acpica/acpivar.h>
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enum ops_t {
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OP_NONE,
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OP_LEQ,
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OP_GEQ,
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OP_EQL,
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};
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enum val_t {
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OEM,
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OEM_REV,
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CREATOR,
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CREATOR_REV,
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};
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struct acpi_q_rule {
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char sig[ACPI_NAMESEG_SIZE]; /* Table signature to match */
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enum val_t val;
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union {
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char *id;
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enum ops_t op;
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} x;
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union {
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char *tid;
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int rev;
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} y;
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};
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struct acpi_q_entry {
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const struct acpi_q_rule *match;
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int quirks;
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};
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#include "acpi_quirks.h"
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static int aq_revcmp(int revision, enum ops_t op, int value);
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static int aq_strcmp(char *actual, char *possible);
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static int aq_match_header(ACPI_TABLE_HEADER *hdr,
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const struct acpi_q_rule *match);
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static int
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aq_revcmp(int revision, enum ops_t op, int value)
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{
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switch (op) {
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case OP_LEQ:
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if (revision <= value)
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return (TRUE);
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break;
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case OP_GEQ:
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if (revision >= value)
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return (TRUE);
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break;
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case OP_EQL:
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if (revision == value)
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return (TRUE);
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break;
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case OP_NONE:
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return (TRUE);
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default:
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panic("aq_revcmp: invalid op %d", op);
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}
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return (FALSE);
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}
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static int
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aq_strcmp(char *actual, char *possible)
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{
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if (actual == NULL || possible == NULL)
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return (TRUE);
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return (strncmp(actual, possible, strlen(possible)) == 0);
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}
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static int
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aq_match_header(ACPI_TABLE_HEADER *hdr, const struct acpi_q_rule *match)
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{
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int result;
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result = FALSE;
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switch (match->val) {
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case OEM:
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if (aq_strcmp(hdr->OemId, match->x.id) &&
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aq_strcmp(hdr->OemTableId, match->y.tid))
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result = TRUE;
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break;
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case CREATOR:
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if (aq_strcmp(hdr->AslCompilerId, match->x.id))
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result = TRUE;
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break;
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case OEM_REV:
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if (aq_revcmp(hdr->OemRevision, match->x.op, match->y.rev))
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result = TRUE;
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break;
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case CREATOR_REV:
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if (aq_revcmp(hdr->AslCompilerRevision, match->x.op, match->y.rev))
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result = TRUE;
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break;
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}
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return (result);
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}
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int
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acpi_table_quirks(int *quirks)
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{
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const struct acpi_q_entry *entry;
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const struct acpi_q_rule *match;
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ACPI_TABLE_HEADER fadt, dsdt, xsdt, *hdr;
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int done;
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/* First, allow the machdep system to set its idea of quirks. */
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KASSERT(quirks != NULL, ("acpi quirks ptr is NULL"));
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acpi_machdep_quirks(quirks);
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if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_FADT, 0, &fadt)))
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bzero(&fadt, sizeof(fadt));
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if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_DSDT, 0, &dsdt)))
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bzero(&dsdt, sizeof(dsdt));
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if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_XSDT, 0, &xsdt)))
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bzero(&xsdt, sizeof(xsdt));
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/* Then, override the quirks with any matched from table signatures. */
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for (entry = acpi_quirks_table; entry->match; entry++) {
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done = TRUE;
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for (match = entry->match; match->sig[0] != '\0'; match++) {
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if (!strncmp(match->sig, "FADT", ACPI_NAMESEG_SIZE))
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hdr = &fadt;
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else if (!strncmp(match->sig, ACPI_SIG_DSDT, ACPI_NAMESEG_SIZE))
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hdr = &dsdt;
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else if (!strncmp(match->sig, ACPI_SIG_XSDT, ACPI_NAMESEG_SIZE))
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hdr = &xsdt;
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else
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panic("invalid quirk header\n");
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/* If we don't match any, skip to the next entry. */
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if (aq_match_header(hdr, match) == FALSE) {
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done = FALSE;
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break;
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}
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}
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/* If all entries matched, update the quirks and return. */
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if (done) {
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*quirks = entry->quirks;
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break;
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}
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}
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return (0);
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}
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