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linux/drivers/acpi/acpica/evgpeblk.c
Lv Zheng f5c1e1c5a6 ACPICA: Divergence: remove unwanted spaces for typedef 
ACPICA commit b2294cae776f5a66a7697414b21949d307e6856f

This patch removes unwanted spaces for typedef. This solution doesn't cover
function types.

Note that the linuxize result of this commit is very giant and should have
many conflicts against the current Linux upstream. Thus it is required to
modify the linuxize result of this commit and the commits around it
manually in order to have them merged to the Linux upstream. Since this is
very costy, we should do this only once, and if we can't ensure to do this
only once, we need to revert the Linux code to the wrong indentation result
before merging the linuxize result of this commit. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/b2294cae
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05 15:14:35 +02:00

514 lines
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/******************************************************************************
*
* Module Name: evgpeblk - GPE block creation and initialization.
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2016, Intel Corp.
* All rights reserved.
*
* 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,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
*/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acevents.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evgpeblk")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/* Local prototypes */
static acpi_status
acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block,
u32 interrupt_number);
static acpi_status
acpi_ev_create_gpe_info_blocks(struct acpi_gpe_block_info *gpe_block);
/*******************************************************************************
*
* FUNCTION: acpi_ev_install_gpe_block
*
* PARAMETERS: gpe_block - New GPE block
* interrupt_number - Xrupt to be associated with this
* GPE block
*
* RETURN: Status
*
* DESCRIPTION: Install new GPE block with mutex support
*
******************************************************************************/
static acpi_status
acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block,
u32 interrupt_number)
{
struct acpi_gpe_block_info *next_gpe_block;
struct acpi_gpe_xrupt_info *gpe_xrupt_block;
acpi_status status;
acpi_cpu_flags flags;
ACPI_FUNCTION_TRACE(ev_install_gpe_block);
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status =
acpi_ev_get_gpe_xrupt_block(interrupt_number, &gpe_xrupt_block);
if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
/* Install the new block at the end of the list with lock */
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
if (gpe_xrupt_block->gpe_block_list_head) {
next_gpe_block = gpe_xrupt_block->gpe_block_list_head;
while (next_gpe_block->next) {
next_gpe_block = next_gpe_block->next;
}
next_gpe_block->next = gpe_block;
gpe_block->previous = next_gpe_block;
} else {
gpe_xrupt_block->gpe_block_list_head = gpe_block;
}
gpe_block->xrupt_block = gpe_xrupt_block;
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_delete_gpe_block
*
* PARAMETERS: gpe_block - Existing GPE block
*
* RETURN: Status
*
* DESCRIPTION: Remove a GPE block
*
******************************************************************************/
acpi_status acpi_ev_delete_gpe_block(struct acpi_gpe_block_info *gpe_block)
{
acpi_status status;
acpi_cpu_flags flags;
ACPI_FUNCTION_TRACE(ev_install_gpe_block);
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Disable all GPEs in this block */
status =
acpi_hw_disable_gpe_block(gpe_block->xrupt_block, gpe_block, NULL);
if (!gpe_block->previous && !gpe_block->next) {
/* This is the last gpe_block on this interrupt */
status = acpi_ev_delete_gpe_xrupt(gpe_block->xrupt_block);
if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
} else {
/* Remove the block on this interrupt with lock */
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
if (gpe_block->previous) {
gpe_block->previous->next = gpe_block->next;
} else {
gpe_block->xrupt_block->gpe_block_list_head =
gpe_block->next;
}
if (gpe_block->next) {
gpe_block->next->previous = gpe_block->previous;
}
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
}
acpi_current_gpe_count -= gpe_block->gpe_count;
/* Free the gpe_block */
ACPI_FREE(gpe_block->register_info);
ACPI_FREE(gpe_block->event_info);
ACPI_FREE(gpe_block);
unlock_and_exit:
status = acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_create_gpe_info_blocks
*
* PARAMETERS: gpe_block - New GPE block
*
* RETURN: Status
*
* DESCRIPTION: Create the register_info and event_info blocks for this GPE block
*
******************************************************************************/
static acpi_status
acpi_ev_create_gpe_info_blocks(struct acpi_gpe_block_info *gpe_block)
{
struct acpi_gpe_register_info *gpe_register_info = NULL;
struct acpi_gpe_event_info *gpe_event_info = NULL;
struct acpi_gpe_event_info *this_event;
struct acpi_gpe_register_info *this_register;
u32 i;
u32 j;
acpi_status status;
ACPI_FUNCTION_TRACE(ev_create_gpe_info_blocks);
/* Allocate the GPE register information block */
gpe_register_info = ACPI_ALLOCATE_ZEROED((acpi_size)gpe_block->
register_count *
sizeof(struct
acpi_gpe_register_info));
if (!gpe_register_info) {
ACPI_ERROR((AE_INFO,
"Could not allocate the GpeRegisterInfo table"));
return_ACPI_STATUS(AE_NO_MEMORY);
}
/*
* Allocate the GPE event_info block. There are eight distinct GPEs
* per register. Initialization to zeros is sufficient.
*/
gpe_event_info = ACPI_ALLOCATE_ZEROED((acpi_size)gpe_block->gpe_count *
sizeof(struct
acpi_gpe_event_info));
if (!gpe_event_info) {
ACPI_ERROR((AE_INFO,
"Could not allocate the GpeEventInfo table"));
status = AE_NO_MEMORY;
goto error_exit;
}
/* Save the new Info arrays in the GPE block */
gpe_block->register_info = gpe_register_info;
gpe_block->event_info = gpe_event_info;
/*
* Initialize the GPE Register and Event structures. A goal of these
* tables is to hide the fact that there are two separate GPE register
* sets in a given GPE hardware block, the status registers occupy the
* first half, and the enable registers occupy the second half.
*/
this_register = gpe_register_info;
this_event = gpe_event_info;
for (i = 0; i < gpe_block->register_count; i++) {
/* Init the register_info for this GPE register (8 GPEs) */
this_register->base_gpe_number = (u16)
(gpe_block->block_base_number +
(i * ACPI_GPE_REGISTER_WIDTH));
this_register->status_address.address = gpe_block->address + i;
this_register->enable_address.address =
gpe_block->address + i + gpe_block->register_count;
this_register->status_address.space_id = gpe_block->space_id;
this_register->enable_address.space_id = gpe_block->space_id;
this_register->status_address.bit_width =
ACPI_GPE_REGISTER_WIDTH;
this_register->enable_address.bit_width =
ACPI_GPE_REGISTER_WIDTH;
this_register->status_address.bit_offset = 0;
this_register->enable_address.bit_offset = 0;
/* Init the event_info for each GPE within this register */
for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) {
this_event->gpe_number =
(u8) (this_register->base_gpe_number + j);
this_event->register_info = this_register;
this_event++;
}
/* Disable all GPEs within this register */
status = acpi_hw_write(0x00, &this_register->enable_address);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
/* Clear any pending GPE events within this register */
status = acpi_hw_write(0xFF, &this_register->status_address);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
this_register++;
}
return_ACPI_STATUS(AE_OK);
error_exit:
if (gpe_register_info) {
ACPI_FREE(gpe_register_info);
}
if (gpe_event_info) {
ACPI_FREE(gpe_event_info);
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_create_gpe_block
*
* PARAMETERS: gpe_device - Handle to the parent GPE block
* gpe_block_address - Address and space_ID
* register_count - Number of GPE register pairs in the block
* gpe_block_base_number - Starting GPE number for the block
* interrupt_number - H/W interrupt for the block
* return_gpe_block - Where the new block descriptor is returned
*
* RETURN: Status
*
* DESCRIPTION: Create and Install a block of GPE registers. All GPEs within
* the block are disabled at exit.
* Note: Assumes namespace is locked.
*
******************************************************************************/
acpi_status
acpi_ev_create_gpe_block(struct acpi_namespace_node *gpe_device,
u64 address,
u8 space_id,
u32 register_count,
u16 gpe_block_base_number,
u32 interrupt_number,
struct acpi_gpe_block_info **return_gpe_block)
{
acpi_status status;
struct acpi_gpe_block_info *gpe_block;
struct acpi_gpe_walk_info walk_info;
ACPI_FUNCTION_TRACE(ev_create_gpe_block);
if (!register_count) {
return_ACPI_STATUS(AE_OK);
}
/* Allocate a new GPE block */
gpe_block = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_block_info));
if (!gpe_block) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Initialize the new GPE block */
gpe_block->address = address;
gpe_block->space_id = space_id;
gpe_block->node = gpe_device;
gpe_block->gpe_count = (u16)(register_count * ACPI_GPE_REGISTER_WIDTH);
gpe_block->initialized = FALSE;
gpe_block->register_count = register_count;
gpe_block->block_base_number = gpe_block_base_number;
/*
* Create the register_info and event_info sub-structures
* Note: disables and clears all GPEs in the block
*/
status = acpi_ev_create_gpe_info_blocks(gpe_block);
if (ACPI_FAILURE(status)) {
ACPI_FREE(gpe_block);
return_ACPI_STATUS(status);
}
/* Install the new block in the global lists */
status = acpi_ev_install_gpe_block(gpe_block, interrupt_number);
if (ACPI_FAILURE(status)) {
ACPI_FREE(gpe_block->register_info);
ACPI_FREE(gpe_block->event_info);
ACPI_FREE(gpe_block);
return_ACPI_STATUS(status);
}
acpi_gbl_all_gpes_initialized = FALSE;
/* Find all GPE methods (_Lxx or_Exx) for this block */
walk_info.gpe_block = gpe_block;
walk_info.gpe_device = gpe_device;
walk_info.execute_by_owner_id = FALSE;
status = acpi_ns_walk_namespace(ACPI_TYPE_METHOD, gpe_device,
ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK,
acpi_ev_match_gpe_method, NULL,
&walk_info, NULL);
/* Return the new block */
if (return_gpe_block) {
(*return_gpe_block) = gpe_block;
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
" Initialized GPE %02X to %02X [%4.4s] %u regs on interrupt 0x%X%s\n",
(u32)gpe_block->block_base_number,
(u32)(gpe_block->block_base_number +
(gpe_block->gpe_count - 1)),
gpe_device->name.ascii, gpe_block->register_count,
interrupt_number,
interrupt_number ==
acpi_gbl_FADT.sci_interrupt ? " (SCI)" : ""));
/* Update global count of currently available GPEs */
acpi_current_gpe_count += gpe_block->gpe_count;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_initialize_gpe_block
*
* PARAMETERS: acpi_gpe_callback
*
* RETURN: Status
*
* DESCRIPTION: Initialize and enable a GPE block. Enable GPEs that have
* associated methods.
* Note: Assumes namespace is locked.
*
******************************************************************************/
acpi_status
acpi_ev_initialize_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
struct acpi_gpe_block_info *gpe_block,
void *ignored)
{
acpi_status status;
struct acpi_gpe_event_info *gpe_event_info;
u32 gpe_enabled_count;
u32 gpe_index;
u32 i;
u32 j;
ACPI_FUNCTION_TRACE(ev_initialize_gpe_block);
/*
* Ignore a null GPE block (e.g., if no GPE block 1 exists), and
* any GPE blocks that have been initialized already.
*/
if (!gpe_block || gpe_block->initialized) {
return_ACPI_STATUS(AE_OK);
}
/*
* Enable all GPEs that have a corresponding method and have the
* ACPI_GPE_CAN_WAKE flag unset. Any other GPEs within this block
* must be enabled via the acpi_enable_gpe() interface.
*/
gpe_enabled_count = 0;
for (i = 0; i < gpe_block->register_count; i++) {
for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) {
/* Get the info block for this particular GPE */
gpe_index = (i * ACPI_GPE_REGISTER_WIDTH) + j;
gpe_event_info = &gpe_block->event_info[gpe_index];
/*
* Ignore GPEs that have no corresponding _Lxx/_Exx method
* and GPEs that are used to wake the system
*/
if ((ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
ACPI_GPE_DISPATCH_NONE)
|| (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
ACPI_GPE_DISPATCH_HANDLER)
|| (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
ACPI_GPE_DISPATCH_RAW_HANDLER)
|| (gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) {
continue;
}
status = acpi_ev_add_gpe_reference(gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Could not enable GPE 0x%02X",
gpe_index +
gpe_block->block_base_number));
continue;
}
gpe_enabled_count++;
}
}
if (gpe_enabled_count) {
ACPI_INFO(("Enabled %u GPEs in block %02X to %02X",
gpe_enabled_count, (u32)gpe_block->block_base_number,
(u32)(gpe_block->block_base_number +
(gpe_block->gpe_count - 1))));
}
gpe_block->initialized = TRUE;
return_ACPI_STATUS(AE_OK);
}
#endif /* !ACPI_REDUCED_HARDWARE */
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