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path: root/drivers/acpi/osl.c
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Diffstat (limited to 'drivers/acpi/osl.c')
-rw-r--r--drivers/acpi/osl.c165
1 files changed, 144 insertions, 21 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index c2bed56915e..00d53c2fd1e 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -33,6 +33,7 @@
#include <linux/interrupt.h>
#include <linux/kmod.h>
#include <linux/delay.h>
+#include <linux/dmi.h>
#include <linux/workqueue.h>
#include <linux/nmi.h>
#include <linux/acpi.h>
@@ -71,6 +72,22 @@ static unsigned int acpi_irq_irq;
static acpi_osd_handler acpi_irq_handler;
static void *acpi_irq_context;
static struct workqueue_struct *kacpid_wq;
+static struct workqueue_struct *kacpi_notify_wq;
+
+#define OSI_STRING_LENGTH_MAX 64 /* arbitrary */
+static char osi_additional_string[OSI_STRING_LENGTH_MAX];
+
+#define OSI_LINUX_ENABLED
+#ifdef OSI_LINUX_ENABLED
+int osi_linux = 1; /* enable _OSI(Linux) by default */
+#else
+int osi_linux; /* disable _OSI(Linux) by default */
+#endif
+
+
+#ifdef CONFIG_DMI
+static struct __initdata dmi_system_id acpi_osl_dmi_table[];
+#endif
static void __init acpi_request_region (struct acpi_generic_address *addr,
unsigned int length, char *desc)
@@ -120,8 +137,9 @@ static int __init acpi_reserve_resources(void)
}
device_initcall(acpi_reserve_resources);
-acpi_status acpi_os_initialize(void)
+acpi_status __init acpi_os_initialize(void)
{
+ dmi_check_system(acpi_osl_dmi_table);
return AE_OK;
}
@@ -137,8 +155,9 @@ acpi_status acpi_os_initialize1(void)
return AE_NULL_ENTRY;
}
kacpid_wq = create_singlethread_workqueue("kacpid");
+ kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify");
BUG_ON(!kacpid_wq);
-
+ BUG_ON(!kacpi_notify_wq);
return AE_OK;
}
@@ -150,6 +169,7 @@ acpi_status acpi_os_terminate(void)
}
destroy_workqueue(kacpid_wq);
+ destroy_workqueue(kacpi_notify_wq);
return AE_OK;
}
@@ -603,6 +623,23 @@ void acpi_os_derive_pci_id(acpi_handle rhandle, /* upper bound */
static void acpi_os_execute_deferred(struct work_struct *work)
{
struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work);
+ if (!dpc) {
+ printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
+ return;
+ }
+
+ dpc->function(dpc->context);
+ kfree(dpc);
+
+ /* Yield cpu to notify thread */
+ cond_resched();
+
+ return;
+}
+
+static void acpi_os_execute_notify(struct work_struct *work)
+{
+ struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work);
if (!dpc) {
printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
@@ -637,14 +674,12 @@ acpi_status acpi_os_execute(acpi_execute_type type,
acpi_status status = AE_OK;
struct acpi_os_dpc *dpc;
- ACPI_FUNCTION_TRACE("os_queue_for_execution");
-
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Scheduling function [%p(%p)] for deferred execution.\n",
function, context));
if (!function)
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ return AE_BAD_PARAMETER;
/*
* Allocate/initialize DPC structure. Note that this memory will be
@@ -662,14 +697,21 @@ acpi_status acpi_os_execute(acpi_execute_type type,
dpc->function = function;
dpc->context = context;
- INIT_WORK(&dpc->work, acpi_os_execute_deferred);
- if (!queue_work(kacpid_wq, &dpc->work)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ if (type == OSL_NOTIFY_HANDLER) {
+ INIT_WORK(&dpc->work, acpi_os_execute_notify);
+ if (!queue_work(kacpi_notify_wq, &dpc->work)) {
+ status = AE_ERROR;
+ kfree(dpc);
+ }
+ } else {
+ INIT_WORK(&dpc->work, acpi_os_execute_deferred);
+ if (!queue_work(kacpid_wq, &dpc->work)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Call to queue_work() failed.\n"));
- kfree(dpc);
- status = AE_ERROR;
+ status = AE_ERROR;
+ kfree(dpc);
+ }
}
-
return_ACPI_STATUS(status);
}
@@ -935,20 +977,38 @@ static int __init acpi_os_name_setup(char *str)
__setup("acpi_os_name=", acpi_os_name_setup);
+static void enable_osi_linux(int enable) {
+
+ if (osi_linux != enable)
+ printk(KERN_INFO PREFIX "%sabled _OSI(Linux)\n",
+ enable ? "En": "Dis");
+
+ osi_linux = enable;
+ return;
+}
+
/*
- * _OSI control
+ * Modify the list of "OS Interfaces" reported to BIOS via _OSI
+ *
* empty string disables _OSI
- * TBD additional string adds to _OSI
+ * string starting with '!' disables that string
+ * otherwise string is added to list, augmenting built-in strings
*/
static int __init acpi_osi_setup(char *str)
{
if (str == NULL || *str == '\0') {
printk(KERN_INFO PREFIX "_OSI method disabled\n");
acpi_gbl_create_osi_method = FALSE;
- } else {
- /* TBD */
- printk(KERN_ERR PREFIX "_OSI additional string ignored -- %s\n",
- str);
+ } else if (!strcmp("!Linux", str)) {
+ enable_osi_linux(0);
+ } else if (*str == '!') {
+ if (acpi_osi_invalidate(++str) == AE_OK)
+ printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str);
+ } else if (!strcmp("Linux", str)) {
+ enable_osi_linux(1);
+ } else if (*osi_additional_string == '\0') {
+ strncpy(osi_additional_string, str, OSI_STRING_LENGTH_MAX);
+ printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str);
}
return 1;
@@ -1038,7 +1098,7 @@ void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags)
acpi_status
acpi_os_create_cache(char *name, u16 size, u16 depth, acpi_cache_t ** cache)
{
- *cache = kmem_cache_create(name, size, 0, 0, NULL, NULL);
+ *cache = kmem_cache_create(name, size, 0, 0, NULL);
if (*cache == NULL)
return AE_ERROR;
else
@@ -1118,11 +1178,28 @@ acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object)
acpi_status
acpi_os_validate_interface (char *interface)
{
-
- return AE_SUPPORT;
+ if (!strncmp(osi_additional_string, interface, OSI_STRING_LENGTH_MAX))
+ return AE_OK;
+ if (!strcmp("Linux", interface)) {
+ printk(KERN_WARNING PREFIX
+ "System BIOS is requesting _OSI(Linux)\n");
+#ifdef OSI_LINUX_ENABLED
+ printk(KERN_WARNING PREFIX
+ "Please test with \"acpi_osi=!Linux\"\n"
+ "Please send dmidecode "
+ "to linux-acpi@vger.kernel.org\n");
+#else
+ printk(KERN_WARNING PREFIX
+ "If \"acpi_osi=Linux\" works better,\n"
+ "Please send dmidecode "
+ "to linux-acpi@vger.kernel.org\n");
+#endif
+ if(osi_linux)
+ return AE_OK;
+ }
+ return AE_SUPPORT;
}
-
/******************************************************************************
*
* FUNCTION: acpi_os_validate_address
@@ -1149,5 +1226,51 @@ acpi_os_validate_address (
return AE_OK;
}
+#ifdef CONFIG_DMI
+#ifdef OSI_LINUX_ENABLED
+static int dmi_osi_not_linux(struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE "%s detected: requires not _OSI(Linux)\n", d->ident);
+ enable_osi_linux(0);
+ return 0;
+}
+#else
+static int dmi_osi_linux(struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE "%s detected: requires _OSI(Linux)\n", d->ident);
+ enable_osi_linux(1);
+ return 0;
+}
+#endif
+
+static struct dmi_system_id acpi_osl_dmi_table[] __initdata = {
+#ifdef OSI_LINUX_ENABLED
+ /*
+ * Boxes that need NOT _OSI(Linux)
+ */
+ {
+ .callback = dmi_osi_not_linux,
+ .ident = "Toshiba Satellite P100",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_BOARD_NAME, "Satellite P100"),
+ },
+ },
+#else
+ /*
+ * Boxes that need _OSI(Linux)
+ */
+ {
+ .callback = dmi_osi_linux,
+ .ident = "Intel Napa CRB",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
+ DMI_MATCH(DMI_BOARD_NAME, "MPAD-MSAE Customer Reference Boards"),
+ },
+ },
+#endif
+ {}
+};
+#endif /* CONFIG_DMI */
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-22 17:46:11 +0000