tools/power/acpi/acpidump: version 20101221 - find dynamic tables in sysfs
This is unchanged version 20101221, plus a small bit in DEFINE_ALTERNATE_TYPES to enable building with latest kernel headers. This version finds dynamic tables exported by Linux in /sys/firmware/acpi/tables/dynamic Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown
parent
39a55ff2c3
commit
d4bb1c90c8
1 changed files with 90 additions and 99 deletions
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@ -1,6 +1,5 @@
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/*
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* (c) Alexey Starikovskiy, Intel, 2005-2006.
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* (c) Len Brown, Intel, 2007.
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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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@ -63,6 +62,8 @@ typedef long long s64;
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#include <unistd.h>
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#include <getopt.h>
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#include <sys/types.h>
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#include <dirent.h>
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#include <acpi/acconfig.h>
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#include <acpi/platform/acenv.h>
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@ -186,40 +187,6 @@ static void acpi_show_data(int fd, u8 * data, int size)
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/*
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* Output ACPI table
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*/
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#define MAX_TABLES 128
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int next_table_dump;
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u64 dumped_tables[MAX_TABLES];
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void
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set_table_dumped(u64 address) {
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if (next_table_dump >= MAX_TABLES) {
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printf("increase MAX_TABLES\n");
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exit(1);
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}
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dumped_tables[next_table_dump++] = address;
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}
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/*
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* list the tables as they are dumped
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* check the list so that they are not dumped twice.
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*
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* this is needed because we follow both the XSDT and RSDT
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* which generally point to all duplicate tables
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* except the FADT
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*/
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int
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check_table_dumped(u64 address) {
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int i;
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for (i = 0; i < MAX_TABLES; ++i) {
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if (address == dumped_tables[i])
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return 1;
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if (dumped_tables[i] == 0)
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return 0;
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}
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return 0;
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}
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static void acpi_show_table(int fd, struct acpi_table_header *table, unsigned long addr)
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{
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char buff[80];
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@ -233,10 +200,6 @@ static void acpi_show_table(int fd, struct acpi_table_header *table, unsigned lo
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static void write_table(int fd, struct acpi_table_header *tbl, unsigned long addr)
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{
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static int select_done = 0;
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if (check_table_dumped((u64)addr))
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return;
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if (!select_sig[0]) {
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if (print) {
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acpi_show_table(fd, tbl, addr);
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@ -255,7 +218,6 @@ static void write_table(int fd, struct acpi_table_header *tbl, unsigned long add
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}
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select_done = 1;
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}
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set_table_dumped((u64) addr);
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}
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static void acpi_dump_FADT(int fd, struct acpi_table_header *tbl, unsigned long xaddr) {
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@ -312,26 +274,30 @@ static void acpi_dump_FADT(int fd, struct acpi_table_header *tbl, unsigned long
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write_table(fd, (struct acpi_table_header *)&x, xaddr);
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}
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static int acpi_dump_RSDT(int fd, struct acpi_rsdp_descriptor *rsdp)
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static int acpi_dump_SDT(int fd, struct acpi_rsdp_descriptor *rsdp)
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{
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struct acpi_table_header *sdt, *tbl = 0;
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int i, num;
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int xsdt = 1, i, num;
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char *offset;
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unsigned long addr;
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tbl = acpi_map_table(rsdp->rsdt_physical_address, "RSDT");
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if (rsdp->revision > 1 && rsdp->xsdt_physical_address) {
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tbl = acpi_map_table(rsdp->xsdt_physical_address, "XSDT");
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}
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if (!tbl && rsdp->rsdt_physical_address) {
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xsdt = 0;
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tbl = acpi_map_table(rsdp->rsdt_physical_address, "RSDT");
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}
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if (!tbl) return 0;
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sdt = malloc(tbl->length);
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memcpy(sdt, tbl, tbl->length);
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acpi_unmap_table(tbl);
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if (checksum((u8 *)sdt, sdt->length))
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fprintf(stderr, "Wrong checksum for %s!\n", "RSDT");
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num = (sdt->length - sizeof(struct acpi_table_header))/sizeof(u32);
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fprintf(stderr, "Wrong checksum for %s!\n", (xsdt)?"XSDT":"RSDT");
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num = (sdt->length - sizeof(struct acpi_table_header))/((xsdt)?sizeof(u64):sizeof(u32));
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offset = (char *)sdt + sizeof(struct acpi_table_header);
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for (i = 0; i < num; ++i, offset += sizeof(u32)) {
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addr = (unsigned long)(*(u32 *)offset);
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for (i = 0; i < num; ++i, offset += ((xsdt) ? sizeof(u64) : sizeof(u32))) {
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addr = (xsdt) ? (unsigned long)(*(u64 *)offset):
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(unsigned long)(*(u32 *)offset);
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if (!addr) continue;
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tbl = acpi_map_table(addr, 0);
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if (!tbl) continue;
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@ -339,66 +305,92 @@ static int acpi_dump_RSDT(int fd, struct acpi_rsdp_descriptor *rsdp)
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acpi_dump_FADT(fd, tbl, addr);
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} else {
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if (checksum((u8 *)tbl, tbl->length))
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fprintf(stderr, "Wrong checksum for %.4s!\n", tbl->signature);
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fprintf(stderr, "Wrong checksum for generic table!\n");
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write_table(fd, tbl, addr);
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}
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acpi_unmap_table(tbl);
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if (connect) {
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(*(u32*)offset) = lseek(fd, 0, SEEK_CUR);
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if (xsdt)
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(*(u64*)offset) = lseek(fd, 0, SEEK_CUR);
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else
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(*(u32*)offset) = lseek(fd, 0, SEEK_CUR);
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}
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}
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addr = (unsigned long)rsdp->rsdt_physical_address;
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if (connect) {
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rsdp->rsdt_physical_address = lseek(fd, 0, SEEK_CUR);
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if (xsdt) {
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addr = (unsigned long)rsdp->xsdt_physical_address;
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if (connect) {
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rsdp->xsdt_physical_address = lseek(fd, 0, SEEK_CUR);
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}
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} else {
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addr = (unsigned long)rsdp->rsdt_physical_address;
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if (connect) {
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rsdp->rsdt_physical_address = lseek(fd, 0, SEEK_CUR);
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}
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}
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write_table(fd, sdt, addr);
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free (sdt);
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return 1;
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}
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#define DYNAMIC_SSDT "/sys/firmware/acpi/tables/dynamic"
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static int acpi_dump_XSDT(int fd, struct acpi_rsdp_descriptor *rsdp)
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static void acpi_dump_dynamic_SSDT(int fd)
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{
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struct acpi_table_header *sdt, *tbl = 0;
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int i, num;
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char *offset;
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unsigned long addr;
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if (rsdp->revision > 1 && rsdp->xsdt_physical_address) {
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tbl = acpi_map_table(rsdp->xsdt_physical_address, "XSDT");
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}
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if (!tbl) return 0;
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struct stat file_stat;
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char filename[256], *ptr;
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DIR *tabledir;
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struct dirent *entry;
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FILE *fp;
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int count, readcount, length;
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struct acpi_table_header table_header, *ptable;
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sdt = malloc(tbl->length);
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memcpy(sdt, tbl, tbl->length);
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acpi_unmap_table(tbl);
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if (checksum((u8 *)sdt, sdt->length))
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fprintf(stderr, "Wrong checksum for %s!\n", "XSDT");
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num = (sdt->length - sizeof(struct acpi_table_header))/sizeof(u64);
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offset = (char *)sdt + sizeof(struct acpi_table_header);
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for (i = 0; i < num; ++i, offset += sizeof(u64)) {
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addr = (unsigned long)(*(u64 *)offset);
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if (!addr) continue;
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tbl = acpi_map_table(addr, 0);
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if (!tbl) continue;
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if (!memcmp(tbl->signature, FADT_SIG, 4)) {
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acpi_dump_FADT(fd, tbl, addr);
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} else {
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if (checksum((u8 *)tbl, tbl->length))
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fprintf(stderr, "Wrong checksum for %.4s\n", tbl->signature);
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write_table(fd, tbl, addr);
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}
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acpi_unmap_table(tbl);
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if (connect) {
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(*(u64*)offset) = lseek(fd, 0, SEEK_CUR);
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}
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if (stat(DYNAMIC_SSDT, &file_stat) == -1) {
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/* The directory doesn't exist */
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return;
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}
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addr = (unsigned long)rsdp->xsdt_physical_address;
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if (connect) {
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rsdp->xsdt_physical_address = lseek(fd, 0, SEEK_CUR);
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tabledir = opendir(DYNAMIC_SSDT);
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if(!tabledir){
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/*can't open the directory */
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return;
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}
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while ((entry = readdir(tabledir)) != 0){
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/* skip the file of . /.. */
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if (entry->d_name[0] == '.')
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continue;
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sprintf(filename, "%s/%s", DYNAMIC_SSDT, entry->d_name);
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fp = fopen(filename, "r");
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if (fp == NULL) {
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fprintf(stderr, "Can't open the file of %s\n",
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filename);
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continue;
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}
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/* Read the Table header to parse the table length */
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count = fread(&table_header, 1, sizeof(struct acpi_table_header), fp);
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if (count < sizeof(table_header)) {
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/* the length is lessn than ACPI table header. skip it */
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fclose(fp);
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continue;
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}
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length = table_header.length;
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ptr = malloc(table_header.length);
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fseek(fp, 0, SEEK_SET);
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readcount = 0;
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while(!feof(fp) && readcount < length) {
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count = fread(ptr + readcount, 1, 256, fp);
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readcount += count;
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}
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fclose(fp);
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ptable = (struct acpi_table_header *) ptr;
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if (checksum((u8 *) ptable, ptable->length))
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fprintf(stderr, "Wrong checksum "
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"for dynamic SSDT table!\n");
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write_table(fd, ptable, 0);
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free(ptr);
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}
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write_table(fd, sdt, addr);
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free (sdt);
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return 1;
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closedir(tabledir);
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return;
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}
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static void usage(const char *progname)
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@ -518,6 +510,7 @@ int main(int argc, char **argv)
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goto not_found;
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write(fd, raw, length);
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acpi_unmap_memory(raw, length);
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close(fd);
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return 0;
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}
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@ -540,12 +533,7 @@ int main(int argc, char **argv)
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if (connect) {
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lseek(fd, sizeof(struct acpi_rsdp_descriptor), SEEK_SET);
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}
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if (rsdpx.revision > 1 && rsdpx.xsdt_physical_address) {
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/* ACPIDUMP uses xsdt table */
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if (!acpi_dump_XSDT(fd, &rsdpx))
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goto not_found;
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}
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if (!acpi_dump_RSDT(fd, &rsdpx))
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if (!acpi_dump_SDT(fd, &rsdpx))
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goto not_found;
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if (connect) {
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lseek(fd, 0, SEEK_SET);
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@ -560,8 +548,11 @@ int main(int argc, char **argv)
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buff[0] = '\n';
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write(fd, buff, 1);
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}
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acpi_dump_dynamic_SSDT(fd);
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close(fd);
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return 0;
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not_found:
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close(fd);
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fprintf(stderr, "ACPI tables were not found. If you know location "
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"of RSD PTR table (from dmesg, etc), "
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"supply it with either --addr or -a option\n");
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