/*-
* Copyright (c) 2001 Mitsuru IWASAKI
* Copyright (c) 2015 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Andrew Turner under
* sponsorship from the FreeBSD Foundation.
*
* 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("$FreeBSD$");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/machdep.h>
#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <contrib/dev/acpica/include/actables.h>
#include <dev/acpica/acpivar.h>
extern struct bus_space memmap_bus;
int
acpi_machdep_init(device_t dev)
{
return (0);
}
int
acpi_machdep_quirks(int *quirks)
{
return (0);
}
static void *
map_table(vm_paddr_t pa, int offset, const char *sig)
{
ACPI_TABLE_HEADER *header;
vm_offset_t length;
void *table;
header = pmap_mapbios(pa, sizeof(ACPI_TABLE_HEADER));
if (strncmp(header->Signature, sig, ACPI_NAMESEG_SIZE) != 0) {
pmap_unmapbios((vm_offset_t)header, sizeof(ACPI_TABLE_HEADER));
return (NULL);
}
length = header->Length;
pmap_unmapbios((vm_offset_t)header, sizeof(ACPI_TABLE_HEADER));
table = pmap_mapbios(pa, length);
if (ACPI_FAILURE(AcpiTbChecksum(table, length))) {
if (bootverbose)
printf("ACPI: Failed checksum for table %s\n", sig);
#if (ACPI_CHECKSUM_ABORT)
pmap_unmapbios(table, length);
return (NULL);
#endif
}
return (table);
}
/*
* See if a given ACPI table is the requested table. Returns the
* length of the able if it matches or zero on failure.
*/
static int
probe_table(vm_paddr_t address, const char *sig)
{
ACPI_TABLE_HEADER *table;
table = pmap_mapbios(address, sizeof(ACPI_TABLE_HEADER));
if (table == NULL) {
if (bootverbose)
printf("ACPI: Failed to map table at 0x%jx\n",
(uintmax_t)address);
return (0);
}
if (bootverbose)
printf("Table '%.4s' at 0x%jx\n", table->Signature,
(uintmax_t)address);
if (strncmp(table->Signature, sig, ACPI_NAMESEG_SIZE) != 0) {
pmap_unmapbios((vm_offset_t)table, sizeof(ACPI_TABLE_HEADER));
return (0);
}
pmap_unmapbios((vm_offset_t)table, sizeof(ACPI_TABLE_HEADER));
return (1);
}
/* Unmap a table previously mapped via acpi_map_table(). */
void
acpi_unmap_table(void *table)
{
ACPI_TABLE_HEADER *header;
header = (ACPI_TABLE_HEADER *)table;
pmap_unmapbios((vm_offset_t)table, header->Length);
}
/*
* Try to map a table at a given physical address previously returned
* by acpi_find_table().
*/
void *
acpi_map_table(vm_paddr_t pa, const char *sig)
{
return (map_table(pa, 0, sig));
}
/*
* Return the physical address of the requested table or zero if one
* is not found.
*/
vm_paddr_t
acpi_find_table(const char *sig)
{
ACPI_PHYSICAL_ADDRESS rsdp_ptr;
ACPI_TABLE_RSDP *rsdp;
ACPI_TABLE_XSDT *xsdt;
ACPI_TABLE_HEADER *table;
vm_paddr_t addr;
int i, count;
if (resource_disabled("acpi", 0))
return (0);
/*
* Map in the RSDP. Since ACPI uses AcpiOsMapMemory() which in turn
* calls pmap_mapbios() to find the RSDP, we assume that we can use
* pmap_mapbios() to map the RSDP.
*/
if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
return (0);
rsdp = pmap_mapbios(rsdp_ptr, sizeof(ACPI_TABLE_RSDP));
if (rsdp == NULL) {
if (bootverbose)
printf("ACPI: Failed to map RSDP\n");
return (0);
}
addr = 0;
if (rsdp->Revision >= 2 && rsdp->XsdtPhysicalAddress != 0) {
/*
* AcpiOsGetRootPointer only verifies the checksum for
* the version 1.0 portion of the RSDP. Version 2.0 has
* an additional checksum that we verify first.
*/
if (AcpiTbChecksum((UINT8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH)) {
if (bootverbose)
printf("ACPI: RSDP failed extended checksum\n");
return (0);
}
xsdt = map_table(rsdp->XsdtPhysicalAddress, 2, ACPI_SIG_XSDT);
if (xsdt == NULL) {
if (bootverbose)
printf("ACPI: Failed to map XSDT\n");
pmap_unmapbios((vm_offset_t)rsdp,
sizeof(ACPI_TABLE_RSDP));
return (0);
}
count = (xsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
sizeof(UINT64);
for (i = 0; i < count; i++)
if (probe_table(xsdt->TableOffsetEntry[i], sig)) {
addr = xsdt->TableOffsetEntry[i];
break;
}
acpi_unmap_table(xsdt);
}
pmap_unmapbios((vm_offset_t)rsdp, sizeof(ACPI_TABLE_RSDP));
if (addr == 0) {
if (bootverbose)
printf("ACPI: No %s table found\n", sig);
return (0);
}
if (bootverbose)
printf("%s: Found table at 0x%jx\n", sig, (uintmax_t)addr);
/*
* Verify that we can map the full table and that its checksum is
* correct, etc.
*/
table = map_table(addr, 0, sig);
if (table == NULL)
return (0);
acpi_unmap_table(table);
return (addr);
}
int
acpi_map_addr(struct acpi_generic_address *addr, bus_space_tag_t *tag,
bus_space_handle_t *handle, bus_size_t size)
{
bus_addr_t phys;
/* Check if the device is Memory mapped */
if (addr->SpaceId != 0)
return (ENXIO);
phys = addr->Address;
*tag = &memmap_bus;
return (bus_space_map(*tag, phys, size, 0, handle));
}
#if MAXMEMDOM > 1
static void
parse_pxm_tables(void *dummy)
{
/* Only parse ACPI tables when booting via ACPI */
if (arm64_bus_method != ARM64_BUS_ACPI)
return;
acpi_pxm_init(MAXCPU, (vm_paddr_t)1 << 40);
acpi_pxm_parse_tables();
acpi_pxm_set_mem_locality();
}
SYSINIT(parse_pxm_tables, SI_SUB_VM - 1, SI_ORDER_FIRST, parse_pxm_tables,
NULL);
#endif
