Commit e8a4a26a authored by Len Brown's avatar Len Brown Committed by Len Brown

[ACPI] reserve IOPORTS for ACPI (David Shaohua Li)

http://bugzilla.kernel.org/show_bug.cgi?id=2641
parent 3b3db70d
......@@ -47,4 +47,4 @@ obj-$(CONFIG_ACPI_DEBUG) += debug.o
obj-$(CONFIG_ACPI_NUMA) += numa.o
obj-$(CONFIG_ACPI_ASUS) += asus_acpi.o
obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o
obj-$(CONFIG_ACPI_BUS) += scan.o
obj-$(CONFIG_ACPI_BUS) += scan.o motherboard.o
/*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <asm/io.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
#define _COMPONENT ACPI_SYSTEM_COMPONENT
ACPI_MODULE_NAME ("acpi_motherboard")
/* Dell use PNP0C01 instead of PNP0C02 */
#define ACPI_MB_HID1 "PNP0C01"
#define ACPI_MB_HID2 "PNP0C02"
/**
* Doesn't care about legacy IO ports, only IO ports beyond 0x1000 are reserved
* Doesn't care about the failure of 'request_region', since other may reserve
* the io ports as well
*/
#define IS_RESERVED_ADDR(base, len) \
(((len) > 0) && ((base) > 0) && ((base) + (len) < IO_SPACE_LIMIT) \
&& ((base) + (len) > PCIBIOS_MIN_IO))
static acpi_status
acpi_reserve_io_ranges (struct acpi_resource *res, void *data)
{
ACPI_FUNCTION_TRACE("acpi_reserve_io_ranges");
if (res->id == ACPI_RSTYPE_IO) {
struct acpi_resource_io *io_res = &res->data.io;
if (io_res->min_base_address != io_res->max_base_address)
return AE_OK;
if (IS_RESERVED_ADDR(io_res->min_base_address, io_res->range_length)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Motherboard resources 0x%08x - 0x%08x\n",
io_res->min_base_address,
io_res->min_base_address + io_res->range_length));
request_region(io_res->min_base_address,
io_res->range_length, "motherboard");
}
}else if (res->id == ACPI_RSTYPE_FIXED_IO) {
struct acpi_resource_fixed_io *fixed_io_res = &res->data.fixed_io;
if (IS_RESERVED_ADDR(fixed_io_res->base_address, fixed_io_res->range_length)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Motherboard resources 0x%08x - 0x%08x\n",
fixed_io_res->base_address,
fixed_io_res->base_address + fixed_io_res->range_length));
request_region(fixed_io_res->base_address,
fixed_io_res->range_length, "motherboard");
}
}else {
/* Memory mapped IO? */
}
return AE_OK;
}
static int acpi_motherboard_add (struct acpi_device *device)
{
if (!device)
return -EINVAL;
acpi_walk_resources(device->handle, METHOD_NAME__CRS,
acpi_reserve_io_ranges, NULL);
return 0;
}
static struct acpi_driver acpi_motherboard_driver1 = {
.name = "motherboard",
.class = "",
.ids = ACPI_MB_HID1,
.ops = {
.add = acpi_motherboard_add,
},
};
static struct acpi_driver acpi_motherboard_driver2 = {
.name = "motherboard",
.class = "",
.ids = ACPI_MB_HID2,
.ops = {
.add = acpi_motherboard_add,
},
};
static void __init
acpi_reserve_resources (void)
{
if (acpi_gbl_FADT->xpm1a_evt_blk.address && acpi_gbl_FADT->pm1_evt_len)
request_region(acpi_gbl_FADT->xpm1a_evt_blk.address,
acpi_gbl_FADT->pm1_evt_len, "PM1a_EVT_BLK");
if (acpi_gbl_FADT->xpm1b_evt_blk.address && acpi_gbl_FADT->pm1_evt_len)
request_region(acpi_gbl_FADT->xpm1b_evt_blk.address,
acpi_gbl_FADT->pm1_evt_len, "PM1b_EVT_BLK");
if (acpi_gbl_FADT->xpm1a_cnt_blk.address && acpi_gbl_FADT->pm1_cnt_len)
request_region(acpi_gbl_FADT->xpm1a_cnt_blk.address,
acpi_gbl_FADT->pm1_cnt_len, "PM1a_CNT_BLK");
if (acpi_gbl_FADT->xpm1b_cnt_blk.address && acpi_gbl_FADT->pm1_cnt_len)
request_region(acpi_gbl_FADT->xpm1b_cnt_blk.address,
acpi_gbl_FADT->pm1_cnt_len, "PM1b_CNT_BLK");
if (acpi_gbl_FADT->xpm_tmr_blk.address && acpi_gbl_FADT->pm_tm_len == 4)
request_region(acpi_gbl_FADT->xpm_tmr_blk.address,
4, "PM_TMR");
if (acpi_gbl_FADT->xpm2_cnt_blk.address && acpi_gbl_FADT->pm2_cnt_len)
request_region(acpi_gbl_FADT->xpm2_cnt_blk.address,
acpi_gbl_FADT->pm2_cnt_len, "PM2_CNT_BLK");
/* Length of GPE blocks must be a non-negative multiple of 2 */
if (acpi_gbl_FADT->xgpe0_blk.address && acpi_gbl_FADT->gpe0_blk_len &&
!(acpi_gbl_FADT->gpe0_blk_len & 0x1))
request_region(acpi_gbl_FADT->xgpe0_blk.address,
acpi_gbl_FADT->gpe0_blk_len, "GPE0_BLK");
if (acpi_gbl_FADT->xgpe1_blk.address && acpi_gbl_FADT->gpe1_blk_len &&
!(acpi_gbl_FADT->gpe1_blk_len & 0x1))
request_region(acpi_gbl_FADT->xgpe1_blk.address,
acpi_gbl_FADT->gpe1_blk_len, "GPE1_BLK");
}
static int __init acpi_motherboard_init(void)
{
acpi_bus_register_driver(&acpi_motherboard_driver1);
acpi_bus_register_driver(&acpi_motherboard_driver2);
/*
* Guarantee motherboard IO reservation first
* This module must run after scan.c
*/
if (!acpi_disabled)
acpi_reserve_resources ();
return 0;
}
subsys_initcall(acpi_motherboard_init);
......@@ -2234,7 +2234,6 @@ acpi_processor_get_info (
* (In particular, allocating the IO range for Cardbus)
*/
request_region(pr->throttling.address, 6, "ACPI CPU throttle");
request_region(acpi_fadt.xpm_tmr_blk.address, 4, "ACPI timer");
}
acpi_processor_get_power_info(pr);
......
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