aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/acpi
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/acpi_pad.c5
-rw-r--r--drivers/acpi/acpica/dsinit.c11
-rw-r--r--drivers/acpi/acpica/dsmethod.c50
-rw-r--r--drivers/acpi/acpica/dswload2.c2
-rw-r--r--drivers/acpi/acpica/evrgnini.c3
-rw-r--r--drivers/acpi/acpica/nsload.c2
-rw-r--r--drivers/acpi/apei/ghes.c2
-rw-r--r--drivers/acpi/ec.c2
-rw-r--r--drivers/acpi/fan.c12
-rw-r--r--drivers/acpi/osl.c13
-rw-r--r--drivers/acpi/pci_link.c38
-rw-r--r--drivers/acpi/property.c117
12 files changed, 148 insertions, 109 deletions
diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
index 8ea8211b2d58..eb76a4c10dbf 100644
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -26,6 +26,7 @@
#include <linux/slab.h>
#include <linux/acpi.h>
#include <asm/mwait.h>
+#include <xen/xen.h>
#define ACPI_PROCESSOR_AGGREGATOR_CLASS "acpi_pad"
#define ACPI_PROCESSOR_AGGREGATOR_DEVICE_NAME "Processor Aggregator"
@@ -477,6 +478,10 @@ static struct acpi_driver acpi_pad_driver = {
static int __init acpi_pad_init(void)
{
+ /* Xen ACPI PAD is used when running as Xen Dom0. */
+ if (xen_initial_domain())
+ return -ENODEV;
+
power_saving_mwait_init();
if (power_saving_mwait_eax == 0)
return -EINVAL;
diff --git a/drivers/acpi/acpica/dsinit.c b/drivers/acpi/acpica/dsinit.c
index f1e6dcc7a827..54d48b90de2c 100644
--- a/drivers/acpi/acpica/dsinit.c
+++ b/drivers/acpi/acpica/dsinit.c
@@ -46,6 +46,7 @@
#include "acdispat.h"
#include "acnamesp.h"
#include "actables.h"
+#include "acinterp.h"
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dsinit")
@@ -214,23 +215,17 @@ acpi_ds_initialize_objects(u32 table_index,
/* Walk entire namespace from the supplied root */
- status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
/*
* We don't use acpi_walk_namespace since we do not want to acquire
* the namespace reader lock.
*/
status =
acpi_ns_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX,
- ACPI_NS_WALK_UNLOCK, acpi_ds_init_one_object,
- NULL, &info, NULL);
+ 0, acpi_ds_init_one_object, NULL, &info,
+ NULL);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
}
- (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
status = acpi_get_table_by_index(table_index, &table);
if (ACPI_FAILURE(status)) {
diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index 32e9ddc0cf2b..2b3210f42a46 100644
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -99,14 +99,11 @@ acpi_ds_auto_serialize_method(struct acpi_namespace_node *node,
"Method auto-serialization parse [%4.4s] %p\n",
acpi_ut_get_node_name(node), node));
- acpi_ex_enter_interpreter();
-
/* Create/Init a root op for the method parse tree */
op = acpi_ps_alloc_op(AML_METHOD_OP, obj_desc->method.aml_start);
if (!op) {
- status = AE_NO_MEMORY;
- goto unlock;
+ return_ACPI_STATUS(AE_NO_MEMORY);
}
acpi_ps_set_name(op, node->name.integer);
@@ -118,8 +115,7 @@ acpi_ds_auto_serialize_method(struct acpi_namespace_node *node,
acpi_ds_create_walk_state(node->owner_id, NULL, NULL, NULL);
if (!walk_state) {
acpi_ps_free_op(op);
- status = AE_NO_MEMORY;
- goto unlock;
+ return_ACPI_STATUS(AE_NO_MEMORY);
}
status = acpi_ds_init_aml_walk(walk_state, op, node,
@@ -138,8 +134,6 @@ acpi_ds_auto_serialize_method(struct acpi_namespace_node *node,
status = acpi_ps_parse_aml(walk_state);
acpi_ps_delete_parse_tree(op);
-unlock:
- acpi_ex_exit_interpreter();
return_ACPI_STATUS(status);
}
@@ -731,26 +725,6 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
acpi_ds_method_data_delete_all(walk_state);
/*
- * If method is serialized, release the mutex and restore the
- * current sync level for this thread
- */
- if (method_desc->method.mutex) {
-
- /* Acquisition Depth handles recursive calls */
-
- method_desc->method.mutex->mutex.acquisition_depth--;
- if (!method_desc->method.mutex->mutex.acquisition_depth) {
- walk_state->thread->current_sync_level =
- method_desc->method.mutex->mutex.
- original_sync_level;
-
- acpi_os_release_mutex(method_desc->method.
- mutex->mutex.os_mutex);
- method_desc->method.mutex->mutex.thread_id = 0;
- }
- }
-
- /*
* Delete any namespace objects created anywhere within the
* namespace by the execution of this method. Unless:
* 1) This method is a module-level executable code method, in which
@@ -786,6 +760,26 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
~ACPI_METHOD_MODIFIED_NAMESPACE;
}
}
+
+ /*
+ * If method is serialized, release the mutex and restore the
+ * current sync level for this thread
+ */
+ if (method_desc->method.mutex) {
+
+ /* Acquisition Depth handles recursive calls */
+
+ method_desc->method.mutex->mutex.acquisition_depth--;
+ if (!method_desc->method.mutex->mutex.acquisition_depth) {
+ walk_state->thread->current_sync_level =
+ method_desc->method.mutex->mutex.
+ original_sync_level;
+
+ acpi_os_release_mutex(method_desc->method.
+ mutex->mutex.os_mutex);
+ method_desc->method.mutex->mutex.thread_id = 0;
+ }
+ }
}
/* Decrement the thread count on the method */
diff --git a/drivers/acpi/acpica/dswload2.c b/drivers/acpi/acpica/dswload2.c
index 028b22a3154e..e36218206bb0 100644
--- a/drivers/acpi/acpica/dswload2.c
+++ b/drivers/acpi/acpica/dswload2.c
@@ -607,11 +607,9 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
}
}
- acpi_ex_exit_interpreter();
status =
acpi_ev_initialize_region
(acpi_ns_get_attached_object(node), FALSE);
- acpi_ex_enter_interpreter();
if (ACPI_FAILURE(status)) {
/*
diff --git a/drivers/acpi/acpica/evrgnini.c b/drivers/acpi/acpica/evrgnini.c
index 3843f1fc5dbb..75ddd160a716 100644
--- a/drivers/acpi/acpica/evrgnini.c
+++ b/drivers/acpi/acpica/evrgnini.c
@@ -45,6 +45,7 @@
#include "accommon.h"
#include "acevents.h"
#include "acnamesp.h"
+#include "acinterp.h"
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evrgnini")
@@ -597,9 +598,11 @@ acpi_ev_initialize_region(union acpi_operand_object *region_obj,
}
}
+ acpi_ex_exit_interpreter();
status =
acpi_ev_execute_reg_method(region_obj,
ACPI_REG_CONNECT);
+ acpi_ex_enter_interpreter();
if (acpi_ns_locked) {
status =
diff --git a/drivers/acpi/acpica/nsload.c b/drivers/acpi/acpica/nsload.c
index 334d3c5ba617..d1f20143bb11 100644
--- a/drivers/acpi/acpica/nsload.c
+++ b/drivers/acpi/acpica/nsload.c
@@ -137,7 +137,9 @@ unlock:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Begin Table Object Initialization\n"));
+ acpi_ex_enter_interpreter();
status = acpi_ds_initialize_objects(table_index, node);
+ acpi_ex_exit_interpreter();
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Completed Table Object Initialization\n"));
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index f0a029e68d3e..0d099a24f776 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -662,7 +662,7 @@ static int ghes_proc(struct ghes *ghes)
ghes_do_proc(ghes, ghes->estatus);
out:
ghes_clear_estatus(ghes);
- return 0;
+ return rc;
}
static void ghes_add_timer(struct ghes *ghes)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 680531062160..48e19d013170 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -526,6 +526,7 @@ static void acpi_ec_enable_event(struct acpi_ec *ec)
acpi_ec_clear(ec);
}
+#ifdef CONFIG_PM_SLEEP
static bool acpi_ec_query_flushed(struct acpi_ec *ec)
{
bool flushed;
@@ -557,6 +558,7 @@ static void acpi_ec_disable_event(struct acpi_ec *ec)
spin_unlock_irqrestore(&ec->lock, flags);
__acpi_ec_flush_event(ec);
}
+#endif /* CONFIG_PM_SLEEP */
static bool acpi_ec_guard_event(struct acpi_ec *ec)
{
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 384cfc3083e1..6cf4988206f2 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -129,8 +129,18 @@ static int fan_get_state_acpi4(struct acpi_device *device, unsigned long *state)
control = obj->package.elements[1].integer.value;
for (i = 0; i < fan->fps_count; i++) {
- if (control == fan->fps[i].control)
+ /*
+ * When Fine Grain Control is set, return the state
+ * corresponding to maximum fan->fps[i].control
+ * value compared to the current speed. Here the
+ * fan->fps[] is sorted array with increasing speed.
+ */
+ if (fan->fif.fine_grain_ctrl && control < fan->fps[i].control) {
+ i = (i > 0) ? i - 1 : 0;
break;
+ } else if (control == fan->fps[i].control) {
+ break;
+ }
}
if (i == fan->fps_count) {
dev_dbg(&device->dev, "Invalid control value returned\n");
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 4305ee9db4b2..416953a42510 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -162,11 +162,18 @@ void acpi_os_vprintf(const char *fmt, va_list args)
if (acpi_in_debugger) {
kdb_printf("%s", buffer);
} else {
- printk(KERN_CONT "%s", buffer);
+ if (printk_get_level(buffer))
+ printk("%s", buffer);
+ else
+ printk(KERN_CONT "%s", buffer);
}
#else
- if (acpi_debugger_write_log(buffer) < 0)
- printk(KERN_CONT "%s", buffer);
+ if (acpi_debugger_write_log(buffer) < 0) {
+ if (printk_get_level(buffer))
+ printk("%s", buffer);
+ else
+ printk(KERN_CONT "%s", buffer);
+ }
#endif
}
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index c983bf733ad3..bc3d914dfc3e 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -87,6 +87,7 @@ struct acpi_pci_link {
static LIST_HEAD(acpi_link_list);
static DEFINE_MUTEX(acpi_link_lock);
+static int sci_irq = -1, sci_penalty;
/* --------------------------------------------------------------------------
PCI Link Device Management
@@ -496,25 +497,13 @@ static int acpi_irq_get_penalty(int irq)
{
int penalty = 0;
- /*
- * Penalize IRQ used by ACPI SCI. If ACPI SCI pin attributes conflict
- * with PCI IRQ attributes, mark ACPI SCI as ISA_ALWAYS so it won't be
- * use for PCI IRQs.
- */
- if (irq == acpi_gbl_FADT.sci_interrupt) {
- u32 type = irq_get_trigger_type(irq) & IRQ_TYPE_SENSE_MASK;
-
- if (type != IRQ_TYPE_LEVEL_LOW)
- penalty += PIRQ_PENALTY_ISA_ALWAYS;
- else
- penalty += PIRQ_PENALTY_PCI_USING;
- }
+ if (irq == sci_irq)
+ penalty += sci_penalty;
if (irq < ACPI_MAX_ISA_IRQS)
return penalty + acpi_isa_irq_penalty[irq];
- penalty += acpi_irq_pci_sharing_penalty(irq);
- return penalty;
+ return penalty + acpi_irq_pci_sharing_penalty(irq);
}
int __init acpi_irq_penalty_init(void)
@@ -619,6 +608,10 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
acpi_device_bid(link->device));
return -ENODEV;
} else {
+ if (link->irq.active < ACPI_MAX_ISA_IRQS)
+ acpi_isa_irq_penalty[link->irq.active] +=
+ PIRQ_PENALTY_PCI_USING;
+
printk(KERN_WARNING PREFIX "%s [%s] enabled at IRQ %d\n",
acpi_device_name(link->device),
acpi_device_bid(link->device), link->irq.active);
@@ -849,7 +842,7 @@ static int __init acpi_irq_penalty_update(char *str, int used)
continue;
if (used)
- new_penalty = acpi_irq_get_penalty(irq) +
+ new_penalty = acpi_isa_irq_penalty[irq] +
PIRQ_PENALTY_ISA_USED;
else
new_penalty = 0;
@@ -871,7 +864,7 @@ static int __init acpi_irq_penalty_update(char *str, int used)
void acpi_penalize_isa_irq(int irq, int active)
{
if ((irq >= 0) && (irq < ARRAY_SIZE(acpi_isa_irq_penalty)))
- acpi_isa_irq_penalty[irq] = acpi_irq_get_penalty(irq) +
+ acpi_isa_irq_penalty[irq] +=
(active ? PIRQ_PENALTY_ISA_USED : PIRQ_PENALTY_PCI_USING);
}
@@ -881,6 +874,17 @@ bool acpi_isa_irq_available(int irq)
acpi_irq_get_penalty(irq) < PIRQ_PENALTY_ISA_ALWAYS);
}
+void acpi_penalize_sci_irq(int irq, int trigger, int polarity)
+{
+ sci_irq = irq;
+
+ if (trigger == ACPI_MADT_TRIGGER_LEVEL &&
+ polarity == ACPI_MADT_POLARITY_ACTIVE_LOW)
+ sci_penalty = PIRQ_PENALTY_PCI_USING;
+ else
+ sci_penalty = PIRQ_PENALTY_ISA_ALWAYS;
+}
+
/*
* Over-ride default table to reserve additional IRQs for use by ISA
* e.g. acpi_irq_isa=5
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index f2fd3fee588a..03f5ec11ab31 100644
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -468,10 +468,11 @@ static int acpi_data_get_property_array(struct acpi_device_data *data,
}
/**
- * acpi_data_get_property_reference - returns handle to the referenced object
- * @data: ACPI device data object containing the property
+ * __acpi_node_get_property_reference - returns handle to the referenced object
+ * @fwnode: Firmware node to get the property from
* @propname: Name of the property
* @index: Index of the reference to return
+ * @num_args: Maximum number of arguments after each reference
* @args: Location to store the returned reference with optional arguments
*
* Find property with @name, verifify that it is a package containing at least
@@ -482,17 +483,40 @@ static int acpi_data_get_property_array(struct acpi_device_data *data,
* If there's more than one reference in the property value package, @index is
* used to select the one to return.
*
+ * It is possible to leave holes in the property value set like in the
+ * example below:
+ *
+ * Package () {
+ * "cs-gpios",
+ * Package () {
+ * ^GPIO, 19, 0, 0,
+ * ^GPIO, 20, 0, 0,
+ * 0,
+ * ^GPIO, 21, 0, 0,
+ * }
+ * }
+ *
+ * Calling this function with index %2 return %-ENOENT and with index %3
+ * returns the last entry. If the property does not contain any more values
+ * %-ENODATA is returned. The NULL entry must be single integer and
+ * preferably contain value %0.
+ *
* Return: %0 on success, negative error code on failure.
*/
-static int acpi_data_get_property_reference(struct acpi_device_data *data,
- const char *propname, size_t index,
- struct acpi_reference_args *args)
+int __acpi_node_get_property_reference(struct fwnode_handle *fwnode,
+ const char *propname, size_t index, size_t num_args,
+ struct acpi_reference_args *args)
{
const union acpi_object *element, *end;
const union acpi_object *obj;
+ struct acpi_device_data *data;
struct acpi_device *device;
int ret, idx = 0;
+ data = acpi_device_data_of_node(fwnode);
+ if (!data)
+ return -EINVAL;
+
ret = acpi_data_get_property(data, propname, ACPI_TYPE_ANY, &obj);
if (ret)
return ret;
@@ -532,59 +556,54 @@ static int acpi_data_get_property_reference(struct acpi_device_data *data,
while (element < end) {
u32 nargs, i;
- if (element->type != ACPI_TYPE_LOCAL_REFERENCE)
- return -EPROTO;
-
- ret = acpi_bus_get_device(element->reference.handle, &device);
- if (ret)
- return -ENODEV;
-
- element++;
- nargs = 0;
-
- /* assume following integer elements are all args */
- for (i = 0; element + i < end; i++) {
- int type = element[i].type;
+ if (element->type == ACPI_TYPE_LOCAL_REFERENCE) {
+ ret = acpi_bus_get_device(element->reference.handle,
+ &device);
+ if (ret)
+ return -ENODEV;
+
+ nargs = 0;
+ element++;
+
+ /* assume following integer elements are all args */
+ for (i = 0; element + i < end && i < num_args; i++) {
+ int type = element[i].type;
+
+ if (type == ACPI_TYPE_INTEGER)
+ nargs++;
+ else if (type == ACPI_TYPE_LOCAL_REFERENCE)
+ break;
+ else
+ return -EPROTO;
+ }
- if (type == ACPI_TYPE_INTEGER)
- nargs++;
- else if (type == ACPI_TYPE_LOCAL_REFERENCE)
- break;
- else
+ if (nargs > MAX_ACPI_REFERENCE_ARGS)
return -EPROTO;
- }
- if (idx++ == index) {
- args->adev = device;
- args->nargs = nargs;
- for (i = 0; i < nargs; i++)
- args->args[i] = element[i].integer.value;
+ if (idx == index) {
+ args->adev = device;
+ args->nargs = nargs;
+ for (i = 0; i < nargs; i++)
+ args->args[i] = element[i].integer.value;
- return 0;
+ return 0;
+ }
+
+ element += nargs;
+ } else if (element->type == ACPI_TYPE_INTEGER) {
+ if (idx == index)
+ return -ENOENT;
+ element++;
+ } else {
+ return -EPROTO;
}
- element += nargs;
+ idx++;
}
- return -EPROTO;
-}
-
-/**
- * acpi_node_get_property_reference - get a handle to the referenced object.
- * @fwnode: Firmware node to get the property from.
- * @propname: Name of the property.
- * @index: Index of the reference to return.
- * @args: Location to store the returned reference with optional arguments.
- */
-int acpi_node_get_property_reference(struct fwnode_handle *fwnode,
- const char *name, size_t index,
- struct acpi_reference_args *args)
-{
- struct acpi_device_data *data = acpi_device_data_of_node(fwnode);
-
- return data ? acpi_data_get_property_reference(data, name, index, args) : -EINVAL;
+ return -ENODATA;
}
-EXPORT_SYMBOL_GPL(acpi_node_get_property_reference);
+EXPORT_SYMBOL_GPL(__acpi_node_get_property_reference);
static int acpi_data_prop_read_single(struct acpi_device_data *data,
const char *propname,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.