diff options
author | Len Brown <len.brown@intel.com> | 2009-01-09 00:13:17 -0500 |
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committer | Len Brown <len.brown@intel.com> | 2009-01-09 03:30:47 -0500 |
commit | 95b482a8d31116f3f5c2a5089569393234d06385 (patch) | |
tree | f32aec8673a285a9d188948be97af3034ee06e93 /drivers/acpi/hardware/hwregs.c | |
parent | 6620e0c49f577454b772fb381543d60ae53eb885 (diff) |
ACPICA: create acpica/ directory
also, delete sleep/ and delete ACPI_CFLAGS from Makefile
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/hardware/hwregs.c')
-rw-r--r-- | drivers/acpi/hardware/hwregs.c | 353 |
1 files changed, 0 insertions, 353 deletions
diff --git a/drivers/acpi/hardware/hwregs.c b/drivers/acpi/hardware/hwregs.c deleted file mode 100644 index 4bc3bbba6e9..00000000000 --- a/drivers/acpi/hardware/hwregs.c +++ /dev/null @@ -1,353 +0,0 @@ - -/******************************************************************************* - * - * Module Name: hwregs - Read/write access functions for the various ACPI - * control and status registers. - * - ******************************************************************************/ - -/* - * Copyright (C) 2000 - 2008, 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 <acpi/accommon.h> -#include <acpi/acnamesp.h> -#include <acpi/acevents.h> - -#define _COMPONENT ACPI_HARDWARE -ACPI_MODULE_NAME("hwregs") - -/******************************************************************************* - * - * FUNCTION: acpi_hw_clear_acpi_status - * - * PARAMETERS: None - * - * RETURN: Status - * - * DESCRIPTION: Clears all fixed and general purpose status bits - * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED - * - ******************************************************************************/ -acpi_status acpi_hw_clear_acpi_status(void) -{ - acpi_status status; - acpi_cpu_flags lock_flags = 0; - - ACPI_FUNCTION_TRACE(hw_clear_acpi_status); - - ACPI_DEBUG_PRINT((ACPI_DB_IO, "About to write %04X to %04X\n", - ACPI_BITMASK_ALL_FIXED_STATUS, - (u16) acpi_gbl_FADT.xpm1a_event_block.address)); - - lock_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock); - - status = acpi_hw_register_write(ACPI_REGISTER_PM1_STATUS, - ACPI_BITMASK_ALL_FIXED_STATUS); - if (ACPI_FAILURE(status)) { - goto unlock_and_exit; - } - - /* Clear the fixed events */ - - if (acpi_gbl_FADT.xpm1b_event_block.address) { - status = acpi_write(ACPI_BITMASK_ALL_FIXED_STATUS, - &acpi_gbl_FADT.xpm1b_event_block); - if (ACPI_FAILURE(status)) { - goto unlock_and_exit; - } - } - - /* Clear the GPE Bits in all GPE registers in all GPE blocks */ - - status = acpi_ev_walk_gpe_list(acpi_hw_clear_gpe_block, NULL); - - unlock_and_exit: - acpi_os_release_lock(acpi_gbl_hardware_lock, lock_flags); - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_hw_get_register_bit_mask - * - * PARAMETERS: register_id - Index of ACPI Register to access - * - * RETURN: The bitmask to be used when accessing the register - * - * DESCRIPTION: Map register_id into a register bitmask. - * - ******************************************************************************/ - -struct acpi_bit_register_info *acpi_hw_get_bit_register_info(u32 register_id) -{ - ACPI_FUNCTION_ENTRY(); - - if (register_id > ACPI_BITREG_MAX) { - ACPI_ERROR((AE_INFO, "Invalid BitRegister ID: %X", - register_id)); - return (NULL); - } - - return (&acpi_gbl_bit_register_info[register_id]); -} - -/****************************************************************************** - * - * FUNCTION: acpi_hw_register_read - * - * PARAMETERS: register_id - ACPI Register ID - * return_value - Where the register value is returned - * - * RETURN: Status and the value read. - * - * DESCRIPTION: Read from the specified ACPI register - * - ******************************************************************************/ -acpi_status -acpi_hw_register_read(u32 register_id, u32 * return_value) -{ - u32 value1 = 0; - u32 value2 = 0; - acpi_status status; - - ACPI_FUNCTION_TRACE(hw_register_read); - - switch (register_id) { - case ACPI_REGISTER_PM1_STATUS: /* 16-bit access */ - - status = acpi_read(&value1, &acpi_gbl_FADT.xpm1a_event_block); - if (ACPI_FAILURE(status)) { - goto exit; - } - - /* PM1B is optional */ - - status = acpi_read(&value2, &acpi_gbl_FADT.xpm1b_event_block); - value1 |= value2; - break; - - case ACPI_REGISTER_PM1_ENABLE: /* 16-bit access */ - - status = acpi_read(&value1, &acpi_gbl_xpm1a_enable); - if (ACPI_FAILURE(status)) { - goto exit; - } - - /* PM1B is optional */ - - status = acpi_read(&value2, &acpi_gbl_xpm1b_enable); - value1 |= value2; - break; - - case ACPI_REGISTER_PM1_CONTROL: /* 16-bit access */ - - status = acpi_read(&value1, &acpi_gbl_FADT.xpm1a_control_block); - if (ACPI_FAILURE(status)) { - goto exit; - } - - status = acpi_read(&value2, &acpi_gbl_FADT.xpm1b_control_block); - value1 |= value2; - break; - - case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */ - - status = acpi_read(&value1, &acpi_gbl_FADT.xpm2_control_block); - break; - - case ACPI_REGISTER_PM_TIMER: /* 32-bit access */ - - status = acpi_read(&value1, &acpi_gbl_FADT.xpm_timer_block); - break; - - case ACPI_REGISTER_SMI_COMMAND_BLOCK: /* 8-bit access */ - - status = - acpi_os_read_port(acpi_gbl_FADT.smi_command, &value1, 8); - break; - - default: - ACPI_ERROR((AE_INFO, "Unknown Register ID: %X", register_id)); - status = AE_BAD_PARAMETER; - break; - } - - exit: - - if (ACPI_SUCCESS(status)) { - *return_value = value1; - } - - return_ACPI_STATUS(status); -} - -/****************************************************************************** - * - * FUNCTION: acpi_hw_register_write - * - * PARAMETERS: register_id - ACPI Register ID - * Value - The value to write - * - * RETURN: Status - * - * DESCRIPTION: Write to the specified ACPI register - * - * NOTE: In accordance with the ACPI specification, this function automatically - * preserves the value of the following bits, meaning that these bits cannot be - * changed via this interface: - * - * PM1_CONTROL[0] = SCI_EN - * PM1_CONTROL[9] - * PM1_STATUS[11] - * - * ACPI References: - * 1) Hardware Ignored Bits: When software writes to a register with ignored - * bit fields, it preserves the ignored bit fields - * 2) SCI_EN: OSPM always preserves this bit position - * - ******************************************************************************/ - -acpi_status acpi_hw_register_write(u32 register_id, u32 value) -{ - acpi_status status; - u32 read_value; - - ACPI_FUNCTION_TRACE(hw_register_write); - - switch (register_id) { - case ACPI_REGISTER_PM1_STATUS: /* 16-bit access */ - - /* Perform a read first to preserve certain bits (per ACPI spec) */ - - status = acpi_hw_register_read(ACPI_REGISTER_PM1_STATUS, - &read_value); - if (ACPI_FAILURE(status)) { - goto exit; - } - - /* Insert the bits to be preserved */ - - ACPI_INSERT_BITS(value, ACPI_PM1_STATUS_PRESERVED_BITS, - read_value); - - /* Now we can write the data */ - - status = acpi_write(value, &acpi_gbl_FADT.xpm1a_event_block); - if (ACPI_FAILURE(status)) { - goto exit; - } - - /* PM1B is optional */ - - status = acpi_write(value, &acpi_gbl_FADT.xpm1b_event_block); - break; - - case ACPI_REGISTER_PM1_ENABLE: /* 16-bit access */ - - status = acpi_write(value, &acpi_gbl_xpm1a_enable); - if (ACPI_FAILURE(status)) { - goto exit; - } - - /* PM1B is optional */ - - status = acpi_write(value, &acpi_gbl_xpm1b_enable); - break; - - case ACPI_REGISTER_PM1_CONTROL: /* 16-bit access */ - - /* - * Perform a read first to preserve certain bits (per ACPI spec) - */ - status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL, - &read_value); - if (ACPI_FAILURE(status)) { - goto exit; - } - - /* Insert the bits to be preserved */ - - ACPI_INSERT_BITS(value, ACPI_PM1_CONTROL_PRESERVED_BITS, - read_value); - - /* Now we can write the data */ - - status = acpi_write(value, &acpi_gbl_FADT.xpm1a_control_block); - if (ACPI_FAILURE(status)) { - goto exit; - } - - status = acpi_write(value, &acpi_gbl_FADT.xpm1b_control_block); - break; - - case ACPI_REGISTER_PM1A_CONTROL: /* 16-bit access */ - - status = acpi_write(value, &acpi_gbl_FADT.xpm1a_control_block); - break; - - case ACPI_REGISTER_PM1B_CONTROL: /* 16-bit access */ - - status = acpi_write(value, &acpi_gbl_FADT.xpm1b_control_block); - break; - - case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */ - - status = acpi_write(value, &acpi_gbl_FADT.xpm2_control_block); - break; - - case ACPI_REGISTER_PM_TIMER: /* 32-bit access */ - - status = acpi_write(value, &acpi_gbl_FADT.xpm_timer_block); - break; - - case ACPI_REGISTER_SMI_COMMAND_BLOCK: /* 8-bit access */ - - /* SMI_CMD is currently always in IO space */ - - status = - acpi_os_write_port(acpi_gbl_FADT.smi_command, value, 8); - break; - - default: - status = AE_BAD_PARAMETER; - break; - } - - exit: - return_ACPI_STATUS(status); -} |