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Merge branch 'acpi-tables'

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* acpi-tables:
  ACPI / x86: Increase override tables number limit
This commit is contained in:
Rafael J. Wysocki 2013-10-28 01:13:29 +01:00
commit 3f66c315f5
2 changed files with 33 additions and 12 deletions
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1
arch/x86/include/asm/acpi.h
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@ -26,6 +26,7 @@
#include <acpi/pdc_intel.h>
#include <asm/numa.h>
#include <asm/fixmap.h>
#include <asm/processor.h>
#include <asm/mmu.h>
#include <asm/mpspec.h>

44
drivers/acpi/osl.c
View File

@ -569,8 +569,10 @@ static const char * const table_sigs[] = {
#define ACPI_HEADER_SIZE sizeof(struct acpi_table_header)
/* Must not increase 10 or needs code modification below */
#define ACPI_OVERRIDE_TABLES 10
#define ACPI_OVERRIDE_TABLES 64
static struct cpio_data __initdata acpi_initrd_files[ACPI_OVERRIDE_TABLES];
#define MAP_CHUNK_SIZE (NR_FIX_BTMAPS << PAGE_SHIFT)
void __init acpi_initrd_override(void *data, size_t size)
{
@ -579,8 +581,6 @@ void __init acpi_initrd_override(void *data, size_t size)
struct acpi_table_header *table;
char cpio_path[32] = "kernel/firmware/acpi/";
struct cpio_data file;
struct cpio_data early_initrd_files[ACPI_OVERRIDE_TABLES];
char *p;
if (data == NULL || size == 0)
return;
@ -625,8 +625,8 @@ void __init acpi_initrd_override(void *data, size_t size)
table->signature, cpio_path, file.name, table->length);
all_tables_size += table->length;
early_initrd_files[table_nr].data = file.data;
early_initrd_files[table_nr].size = file.size;
acpi_initrd_files[table_nr].data = file.data;
acpi_initrd_files[table_nr].size = file.size;
table_nr++;
}
if (table_nr == 0)
@ -652,14 +652,34 @@ void __init acpi_initrd_override(void *data, size_t size)
memblock_reserve(acpi_tables_addr, all_tables_size);
arch_reserve_mem_area(acpi_tables_addr, all_tables_size);
p = early_ioremap(acpi_tables_addr, all_tables_size);
/*
* early_ioremap only can remap 256k one time. If we map all
* tables one time, we will hit the limit. Need to map chunks
* one by one during copying the same as that in relocate_initrd().
*/
for (no = 0; no < table_nr; no++) {
memcpy(p + total_offset, early_initrd_files[no].data,
early_initrd_files[no].size);
total_offset += early_initrd_files[no].size;
unsigned char *src_p = acpi_initrd_files[no].data;
phys_addr_t size = acpi_initrd_files[no].size;
phys_addr_t dest_addr = acpi_tables_addr + total_offset;
phys_addr_t slop, clen;
char *dest_p;
total_offset += size;
while (size) {
slop = dest_addr & ~PAGE_MASK;
clen = size;
if (clen > MAP_CHUNK_SIZE - slop)
clen = MAP_CHUNK_SIZE - slop;
dest_p = early_ioremap(dest_addr & PAGE_MASK,
clen + slop);
memcpy(dest_p + slop, src_p, clen);
early_iounmap(dest_p, clen + slop);
src_p += clen;
dest_addr += clen;
size -= clen;
}
}
early_iounmap(p, all_tables_size);
}
#endif /* CONFIG_ACPI_INITRD_TABLE_OVERRIDE */