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ACPICA: Remove duplicate table manager

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Signed-off-by: Len Brown <[email protected]>
This commit is contained in:
Alexey Starikovskiy 2007-02-02 19:48:22 +03:00 • committed by Len Brown
commit ceb6c46839
7 changed files with 50 additions and 461 deletions
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396
drivers/acpi/tables.c
View file

@ -38,71 +38,11 @@
#define ACPI_MAX_TABLES 128
static char *acpi_table_signatures[ACPI_TABLE_COUNT] = {
[ACPI_TABLE_UNKNOWN] = "????",
[ACPI_APIC] = "APIC",
[ACPI_BOOT] = "BOOT",
[ACPI_DBGP] = "DBGP",
[ACPI_DSDT] = "DSDT",
[ACPI_ECDT] = "ECDT",
[ACPI_ETDT] = "ETDT",
[ACPI_FADT] = "FACP",
[ACPI_FACS] = "FACS",
[ACPI_OEMX] = "OEM",
[ACPI_PSDT] = "PSDT",
[ACPI_SBST] = "SBST",
[ACPI_SLIT] = "SLIT",
[ACPI_SPCR] = "SPCR",
[ACPI_SRAT] = "SRAT",
[ACPI_SSDT] = "SSDT",
[ACPI_SPMI] = "SPMI",
[ACPI_HPET] = "HPET",
[ACPI_MCFG] = "MCFG",
};
static char *mps_inti_flags_polarity[] = { "dfl", "high", "res", "low" };
static char *mps_inti_flags_trigger[] = { "dfl", "edge", "res", "level" };
/* System Description Table (RSDT/XSDT) */
struct acpi_table_sdt {
unsigned long pa;
enum acpi_table_id id;
unsigned long size;
} __attribute__ ((packed));
static unsigned long sdt_pa; /* Physical Address */
static unsigned long sdt_count; /* Table count */
static struct acpi_table_sdt sdt_entry[ACPI_MAX_TABLES] __initdata;
static struct acpi_table_desc initial_tables[ACPI_MAX_TABLES] __initdata;
void acpi_table_print(struct acpi_table_header *header, unsigned long phys_addr)
{
char *name = NULL;
if (!header)
return;
/* Some table signatures aren't good table names */
if (!strncmp((char *)&header->signature,
acpi_table_signatures[ACPI_APIC],
sizeof(header->signature))) {
name = "MADT";
} else if (!strncmp((char *)&header->signature,
acpi_table_signatures[ACPI_FADT],
sizeof(header->signature))) {
name = "FADT";
} else
name = header->signature;
printk(KERN_DEBUG PREFIX
"%.4s (v%3.3d %6.6s %8.8s 0x%08x %.4s 0x%08x) @ 0x%p\n", name,
header->revision, header->oem_id, header->oem_table_id,
header->oem_revision, header->asl_compiler_id,
header->asl_compiler_revision, (void *)phys_addr);
}
void acpi_table_print_madt_entry(acpi_table_entry_header * header)
{
if (!header)
@ -226,123 +166,32 @@ void acpi_table_print_madt_entry(acpi_table_entry_header * header)
}
}
static int
acpi_table_compute_checksum(void *table_pointer, unsigned long length)
{
u8 *p = table_pointer;
unsigned long remains = length;
unsigned long sum = 0;
if (!p || !length)
return -EINVAL;
while (remains--)
sum += *p++;
return (sum & 0xFF);
}
/*
* acpi_get_table_header_early()
* for acpi_blacklisted(), acpi_table_get_sdt()
*/
int __init
acpi_get_table_header_early(enum acpi_table_id id,
struct acpi_table_header **header)
{
unsigned int i;
enum acpi_table_id temp_id;
/* DSDT is different from the rest */
if (id == ACPI_DSDT)
temp_id = ACPI_FADT;
else
temp_id = id;
/* Locate the table. */
for (i = 0; i < sdt_count; i++) {
if (sdt_entry[i].id != temp_id)
continue;
*header = (void *)
__acpi_map_table(sdt_entry[i].pa, sdt_entry[i].size);
if (!*header) {
printk(KERN_WARNING PREFIX "Unable to map %s\n",
acpi_table_signatures[temp_id]);
return -ENODEV;
}
break;
}
if (!*header) {
printk(KERN_WARNING PREFIX "%s not present\n",
acpi_table_signatures[id]);
return -ENODEV;
}
/* Map the DSDT header via the pointer in the FADT */
if (id == ACPI_DSDT) {
struct fadt_descriptor *fadt =
(struct fadt_descriptor *)*header;
if (fadt->header.revision == 3 && fadt->Xdsdt) {
*header = (void *)__acpi_map_table(fadt->Xdsdt,
sizeof(struct
acpi_table_header));
} else if (fadt->dsdt) {
*header = (void *)__acpi_map_table(fadt->dsdt,
sizeof(struct
acpi_table_header));
} else
*header = NULL;
if (!*header) {
printk(KERN_WARNING PREFIX "Unable to map DSDT\n");
return -ENODEV;
}
}
return 0;
}
int __init
acpi_table_parse_madt_family(enum acpi_table_id id,
acpi_table_parse_madt_family(char *id,
unsigned long madt_size,
int entry_id,
acpi_madt_entry_handler handler,
unsigned int max_entries)
{
void *madt = NULL;
struct acpi_table_header *madt = NULL;
acpi_table_entry_header *entry;
unsigned int count = 0;
unsigned long madt_end;
unsigned int i;
if (!handler)
return -EINVAL;
/* Locate the MADT (if exists). There should only be one. */
for (i = 0; i < sdt_count; i++) {
if (sdt_entry[i].id != id)
continue;
madt = (void *)
__acpi_map_table(sdt_entry[i].pa, sdt_entry[i].size);
if (!madt) {
printk(KERN_WARNING PREFIX "Unable to map %s\n",
acpi_table_signatures[id]);
return -ENODEV;
}
break;
}
acpi_get_table(id, 0, &madt);
if (!madt) {
printk(KERN_WARNING PREFIX "%s not present\n",
acpi_table_signatures[id]);
printk(KERN_WARNING PREFIX "%4.4s not present\n", id);
return -ENODEV;
}
madt_end = (unsigned long)madt + sdt_entry[i].size;
madt_end = (unsigned long)madt + madt->length;
/* Parse all entries looking for a match. */
@ -360,9 +209,8 @@ acpi_table_parse_madt_family(enum acpi_table_id id,
((unsigned long)entry + entry->length);
}
if (max_entries && count > max_entries) {
printk(KERN_WARNING PREFIX "[%s:0x%02x] ignored %i entries of "
"%i found\n", acpi_table_signatures[id], entry_id,
count - max_entries, count);
printk(KERN_WARNING PREFIX "[%4.4s:0x%02x] ignored %i entries of "
"%i found\n", id, entry_id, count - max_entries, count);
}
return count;
@ -372,195 +220,24 @@ int __init
acpi_table_parse_madt(enum acpi_madt_entry_id id,
acpi_madt_entry_handler handler, unsigned int max_entries)
{
return acpi_table_parse_madt_family(ACPI_APIC,
return acpi_table_parse_madt_family("APIC",
sizeof(struct acpi_table_madt), id,
handler, max_entries);
}
int __init acpi_table_parse(enum acpi_table_id id, acpi_table_handler handler)
int __init acpi_table_parse(char *id, acpi_table_handler handler)
{
int count = 0;
unsigned int i = 0;
struct acpi_table_header *table = NULL;
if (!handler)
return -EINVAL;
for (i = 0; i < sdt_count; i++) {
if (sdt_entry[i].id != id)
continue;
count++;
if (count == 1)
handler(sdt_entry[i].pa, sdt_entry[i].size);
else
printk(KERN_WARNING PREFIX
"%d duplicate %s table ignored.\n", count,
acpi_table_signatures[id]);
}
return count;
}
static int __init acpi_table_get_sdt(struct acpi_table_rsdp *rsdp)
{
struct acpi_table_header *header = NULL;
unsigned int i, id = 0;
if (!rsdp)
return -EINVAL;
/* First check XSDT (but only on ACPI 2.0-compatible systems) */
if ((rsdp->revision >= 2) && rsdp->xsdt_physical_address) {
struct acpi_table_xsdt *mapped_xsdt = NULL;
sdt_pa = rsdp->xsdt_physical_address;
/* map in just the header */
header = (struct acpi_table_header *)
__acpi_map_table(sdt_pa, sizeof(struct acpi_table_header));
if (!header) {
printk(KERN_WARNING PREFIX
"Unable to map XSDT header\n");
return -ENODEV;
}
/* remap in the entire table before processing */
mapped_xsdt = (struct acpi_table_xsdt *)
__acpi_map_table(sdt_pa, header->length);
if (!mapped_xsdt) {
printk(KERN_WARNING PREFIX "Unable to map XSDT\n");
return -ENODEV;
}
header = &mapped_xsdt->header;
if (strncmp(header->signature, "XSDT", 4)) {
printk(KERN_WARNING PREFIX
"XSDT signature incorrect\n");
return -ENODEV;
}
if (acpi_table_compute_checksum(header, header->length)) {
printk(KERN_WARNING PREFIX "Invalid XSDT checksum\n");
return -ENODEV;
}
sdt_count =
(header->length - sizeof(struct acpi_table_header)) >> 3;
if (sdt_count > ACPI_MAX_TABLES) {
printk(KERN_WARNING PREFIX
"Truncated %lu XSDT entries\n",
(sdt_count - ACPI_MAX_TABLES));
sdt_count = ACPI_MAX_TABLES;
}
for (i = 0; i < sdt_count; i++)
sdt_entry[i].pa = (unsigned long)mapped_xsdt->table_offset_entry[i];
}
/* Then check RSDT */
else if (rsdp->rsdt_physical_address) {
struct acpi_table_rsdt *mapped_rsdt = NULL;
sdt_pa = rsdp->rsdt_physical_address;
/* map in just the header */
header = (struct acpi_table_header *)
__acpi_map_table(sdt_pa, sizeof(struct acpi_table_header));
if (!header) {
printk(KERN_WARNING PREFIX
"Unable to map RSDT header\n");
return -ENODEV;
}
/* remap in the entire table before processing */
mapped_rsdt = (struct acpi_table_rsdt *)
__acpi_map_table(sdt_pa, header->length);
if (!mapped_rsdt) {
printk(KERN_WARNING PREFIX "Unable to map RSDT\n");
return -ENODEV;
}
header = &mapped_rsdt->header;
if (strncmp(header->signature, "RSDT", 4)) {
printk(KERN_WARNING PREFIX
"RSDT signature incorrect\n");
return -ENODEV;
}
if (acpi_table_compute_checksum(header, header->length)) {
printk(KERN_WARNING PREFIX "Invalid RSDT checksum\n");
return -ENODEV;
}
sdt_count =
(header->length - sizeof(struct acpi_table_header)) >> 2;
if (sdt_count > ACPI_MAX_TABLES) {
printk(KERN_WARNING PREFIX
"Truncated %lu RSDT entries\n",
(sdt_count - ACPI_MAX_TABLES));
sdt_count = ACPI_MAX_TABLES;
}
for (i = 0; i < sdt_count; i++)
sdt_entry[i].pa = (unsigned long)mapped_rsdt->table_offset_entry[i];
}
else {
printk(KERN_WARNING PREFIX
"No System Description Table (RSDT/XSDT) specified in RSDP\n");
return -ENODEV;
}
acpi_table_print(header, sdt_pa);
for (i = 0; i < sdt_count; i++) {
/* map in just the header */
header = (struct acpi_table_header *)
__acpi_map_table(sdt_entry[i].pa,
sizeof(struct acpi_table_header));
if (!header)
continue;
/* remap in the entire table before processing */
header = (struct acpi_table_header *)
__acpi_map_table(sdt_entry[i].pa, header->length);
if (!header)
continue;
acpi_table_print(header, sdt_entry[i].pa);
if (acpi_table_compute_checksum(header, header->length)) {
printk(KERN_WARNING " >>> ERROR: Invalid checksum\n");
continue;
}
sdt_entry[i].size = header->length;
for (id = 0; id < ACPI_TABLE_COUNT; id++) {
if (!strncmp((char *)&header->signature,
acpi_table_signatures[id],
sizeof(header->signature))) {
sdt_entry[i].id = id;
}
}
}
/*
* The DSDT is *not* in the RSDT (why not? no idea.) but we want
* to print its info, because this is what people usually blacklist
* against. Unfortunately, we don't know the phys_addr, so just
* print 0. Maybe no one will notice.
*/
if (!acpi_get_table_header_early(ACPI_DSDT, &header))
acpi_table_print(header, 0);
return 0;
acpi_get_table(id, 0, &table);
if (table) {
handler(table);
return 1;
} else
return 0;
}
/*
@ -574,47 +251,6 @@ static int __init acpi_table_get_sdt(struct acpi_table_rsdp *rsdp)
int __init acpi_table_init(void)
{
struct acpi_table_rsdp *rsdp = NULL;
unsigned long rsdp_phys = 0;
int result = 0;
/* Locate and map the Root System Description Table (RSDP) */
rsdp_phys = acpi_find_rsdp();
if (!rsdp_phys) {
printk(KERN_ERR PREFIX "Unable to locate RSDP\n");
return -ENODEV;
}
rsdp = (struct acpi_table_rsdp *)__acpi_map_table(rsdp_phys,
sizeof(struct acpi_table_rsdp));
if (!rsdp) {
printk(KERN_WARNING PREFIX "Unable to map RSDP\n");
return -ENODEV;
}
printk(KERN_DEBUG PREFIX
"RSDP (v%3.3d %6.6s ) @ 0x%p\n",
rsdp->revision, rsdp->oem_id, (void *)rsdp_phys);
if (rsdp->revision < 2)
result =
acpi_table_compute_checksum(rsdp, ACPI_RSDP_REV0_SIZE);
else
result =
acpi_table_compute_checksum(rsdp, rsdp->length);
if (result) {
printk(KERN_WARNING " >>> ERROR: Invalid checksum\n");
return -ENODEV;
}
/* Locate and map the System Description table (RSDT/XSDT) */
if (acpi_table_get_sdt(rsdp))
return -ENODEV;
acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0);
return 0;
}