![matthieu castet](/assets/img/avatar_default.png)
Clean the blacklist. Battery, Button, Fan have no _CRS and can be removed. PCI root is in pnpbios and is harmless. Cc: Adam Belay <ambx1@neo.rr.com> Cc: "Li, Shaohua" <shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Len Brown <len.brown@intel.com>
268 lines
6.9 KiB
C
268 lines
6.9 KiB
C
/*
|
|
* pnpacpi -- PnP ACPI driver
|
|
*
|
|
* Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr>
|
|
* Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com>
|
|
*
|
|
* 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, 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/config.h>
|
|
#include <linux/acpi.h>
|
|
#include <linux/pnp.h>
|
|
#include <acpi/acpi_bus.h>
|
|
#include "pnpacpi.h"
|
|
|
|
static int num = 0;
|
|
|
|
/* We need only to blacklist devices that have already an acpi driver that
|
|
* can't use pnp layer. We don't need to blacklist device that are directly
|
|
* used by the kernel (PCI root, ...), as it is harmless and there were
|
|
* already present in pnpbios. But there is an exception for devices that
|
|
* have irqs (PIC, Timer) because we call acpi_register_gsi.
|
|
* Finaly only devices that have a CRS method need to be in this list.
|
|
*/
|
|
static char __initdata excluded_id_list[] =
|
|
"PNP0C09," /* EC */
|
|
"PNP0C0F," /* Link device */
|
|
"PNP0000," /* PIC */
|
|
"PNP0100," /* Timer */
|
|
;
|
|
static inline int is_exclusive_device(struct acpi_device *dev)
|
|
{
|
|
return (!acpi_match_ids(dev, excluded_id_list));
|
|
}
|
|
|
|
/*
|
|
* Compatible Device IDs
|
|
*/
|
|
#define TEST_HEX(c) \
|
|
if (!(('0' <= (c) && (c) <= '9') || ('A' <= (c) && (c) <= 'F'))) \
|
|
return 0
|
|
#define TEST_ALPHA(c) \
|
|
if (!('@' <= (c) || (c) <= 'Z')) \
|
|
return 0
|
|
static int __init ispnpidacpi(char *id)
|
|
{
|
|
TEST_ALPHA(id[0]);
|
|
TEST_ALPHA(id[1]);
|
|
TEST_ALPHA(id[2]);
|
|
TEST_HEX(id[3]);
|
|
TEST_HEX(id[4]);
|
|
TEST_HEX(id[5]);
|
|
TEST_HEX(id[6]);
|
|
if (id[7] != '\0')
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
static void __init pnpidacpi_to_pnpid(char *id, char *str)
|
|
{
|
|
str[0] = id[0];
|
|
str[1] = id[1];
|
|
str[2] = id[2];
|
|
str[3] = tolower(id[3]);
|
|
str[4] = tolower(id[4]);
|
|
str[5] = tolower(id[5]);
|
|
str[6] = tolower(id[6]);
|
|
str[7] = '\0';
|
|
}
|
|
|
|
static int pnpacpi_get_resources(struct pnp_dev * dev, struct pnp_resource_table * res)
|
|
{
|
|
acpi_status status;
|
|
status = pnpacpi_parse_allocated_resource((acpi_handle)dev->data,
|
|
&dev->res);
|
|
return ACPI_FAILURE(status) ? -ENODEV : 0;
|
|
}
|
|
|
|
static int pnpacpi_set_resources(struct pnp_dev * dev, struct pnp_resource_table * res)
|
|
{
|
|
acpi_handle handle = dev->data;
|
|
struct acpi_buffer buffer;
|
|
int ret = 0;
|
|
acpi_status status;
|
|
|
|
ret = pnpacpi_build_resource_template(handle, &buffer);
|
|
if (ret)
|
|
return ret;
|
|
ret = pnpacpi_encode_resources(res, &buffer);
|
|
if (ret) {
|
|
kfree(buffer.pointer);
|
|
return ret;
|
|
}
|
|
status = acpi_set_current_resources(handle, &buffer);
|
|
if (ACPI_FAILURE(status))
|
|
ret = -EINVAL;
|
|
kfree(buffer.pointer);
|
|
return ret;
|
|
}
|
|
|
|
static int pnpacpi_disable_resources(struct pnp_dev *dev)
|
|
{
|
|
acpi_status status;
|
|
|
|
/* acpi_unregister_gsi(pnp_irq(dev, 0)); */
|
|
status = acpi_evaluate_object((acpi_handle)dev->data,
|
|
"_DIS", NULL, NULL);
|
|
return ACPI_FAILURE(status) ? -ENODEV : 0;
|
|
}
|
|
|
|
static struct pnp_protocol pnpacpi_protocol = {
|
|
.name = "Plug and Play ACPI",
|
|
.get = pnpacpi_get_resources,
|
|
.set = pnpacpi_set_resources,
|
|
.disable = pnpacpi_disable_resources,
|
|
};
|
|
|
|
static int __init pnpacpi_add_device(struct acpi_device *device)
|
|
{
|
|
acpi_handle temp = NULL;
|
|
acpi_status status;
|
|
struct pnp_id *dev_id;
|
|
struct pnp_dev *dev;
|
|
|
|
status = acpi_get_handle(device->handle, "_CRS", &temp);
|
|
if (ACPI_FAILURE(status) || !ispnpidacpi(acpi_device_hid(device)) ||
|
|
is_exclusive_device(device))
|
|
return 0;
|
|
|
|
pnp_dbg("ACPI device : hid %s", acpi_device_hid(device));
|
|
dev = kcalloc(1, sizeof(struct pnp_dev), GFP_KERNEL);
|
|
if (!dev) {
|
|
pnp_err("Out of memory");
|
|
return -ENOMEM;
|
|
}
|
|
dev->data = device->handle;
|
|
/* .enabled means if the device can decode the resources */
|
|
dev->active = device->status.enabled;
|
|
status = acpi_get_handle(device->handle, "_SRS", &temp);
|
|
if (ACPI_SUCCESS(status))
|
|
dev->capabilities |= PNP_CONFIGURABLE;
|
|
dev->capabilities |= PNP_READ;
|
|
if (device->flags.dynamic_status)
|
|
dev->capabilities |= PNP_WRITE;
|
|
if (device->flags.removable)
|
|
dev->capabilities |= PNP_REMOVABLE;
|
|
status = acpi_get_handle(device->handle, "_DIS", &temp);
|
|
if (ACPI_SUCCESS(status))
|
|
dev->capabilities |= PNP_DISABLE;
|
|
|
|
dev->protocol = &pnpacpi_protocol;
|
|
|
|
if (strlen(acpi_device_name(device)))
|
|
strncpy(dev->name, acpi_device_name(device), sizeof(dev->name));
|
|
else
|
|
strncpy(dev->name, acpi_device_bid(device), sizeof(dev->name));
|
|
|
|
dev->number = num;
|
|
|
|
/* set the initial values for the PnP device */
|
|
dev_id = kcalloc(1, sizeof(struct pnp_id), GFP_KERNEL);
|
|
if (!dev_id)
|
|
goto err;
|
|
pnpidacpi_to_pnpid(acpi_device_hid(device), dev_id->id);
|
|
pnp_add_id(dev_id, dev);
|
|
|
|
if(dev->active) {
|
|
/* parse allocated resource */
|
|
status = pnpacpi_parse_allocated_resource(device->handle, &dev->res);
|
|
if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
|
|
pnp_err("PnPACPI: METHOD_NAME__CRS failure for %s", dev_id->id);
|
|
goto err1;
|
|
}
|
|
}
|
|
|
|
if(dev->capabilities & PNP_CONFIGURABLE) {
|
|
status = pnpacpi_parse_resource_option_data(device->handle,
|
|
dev);
|
|
if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
|
|
pnp_err("PnPACPI: METHOD_NAME__PRS failure for %s", dev_id->id);
|
|
goto err1;
|
|
}
|
|
}
|
|
|
|
/* parse compatible ids */
|
|
if (device->flags.compatible_ids) {
|
|
struct acpi_compatible_id_list *cid_list = device->pnp.cid_list;
|
|
int i;
|
|
|
|
for (i = 0; i < cid_list->count; i++) {
|
|
if (!ispnpidacpi(cid_list->id[i].value))
|
|
continue;
|
|
dev_id = kcalloc(1, sizeof(struct pnp_id), GFP_KERNEL);
|
|
if (!dev_id)
|
|
continue;
|
|
|
|
pnpidacpi_to_pnpid(cid_list->id[i].value, dev_id->id);
|
|
pnp_add_id(dev_id, dev);
|
|
}
|
|
}
|
|
|
|
/* clear out the damaged flags */
|
|
if (!dev->active)
|
|
pnp_init_resource_table(&dev->res);
|
|
pnp_add_device(dev);
|
|
num ++;
|
|
|
|
return AE_OK;
|
|
err1:
|
|
kfree(dev_id);
|
|
err:
|
|
kfree(dev);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static acpi_status __init pnpacpi_add_device_handler(acpi_handle handle,
|
|
u32 lvl, void *context, void **rv)
|
|
{
|
|
struct acpi_device *device;
|
|
|
|
if (!acpi_bus_get_device(handle, &device))
|
|
pnpacpi_add_device(device);
|
|
else
|
|
return AE_CTRL_DEPTH;
|
|
return AE_OK;
|
|
}
|
|
|
|
int pnpacpi_disabled __initdata;
|
|
static int __init pnpacpi_init(void)
|
|
{
|
|
if (acpi_disabled || pnpacpi_disabled) {
|
|
pnp_info("PnP ACPI: disabled");
|
|
return 0;
|
|
}
|
|
pnp_info("PnP ACPI init");
|
|
pnp_register_protocol(&pnpacpi_protocol);
|
|
acpi_get_devices(NULL, pnpacpi_add_device_handler, NULL, NULL);
|
|
pnp_info("PnP ACPI: found %d devices", num);
|
|
return 0;
|
|
}
|
|
subsys_initcall(pnpacpi_init);
|
|
|
|
static int __init pnpacpi_setup(char *str)
|
|
{
|
|
if (str == NULL)
|
|
return 1;
|
|
if (!strncmp(str, "off", 3))
|
|
pnpacpi_disabled = 1;
|
|
return 1;
|
|
}
|
|
__setup("pnpacpi=", pnpacpi_setup);
|
|
|
|
#if 0
|
|
EXPORT_SYMBOL(pnpacpi_protocol);
|
|
#endif
|