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/*******************************************************************************

 *

 * Module Name: hwregs - Read/write access functions for the various ACPI

 *                       control and status registers.

 *

 ******************************************************************************/

/*

 * Copyright (C) 2000 - 2004, R. Byron Moore

 * 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/acnamesp.h>

#include <acpi/acevents.h>

#define _COMPONENT          ACPI_HARDWARE

         ACPI_MODULE_NAME    ("hwregs")

/*******************************************************************************

 *

 * FUNCTION:    acpi_hw_clear_acpi_status

 *

 * PARAMETERS:  Flags           - Lock the hardware or not

 *

 * RETURN:      none

 *

 * DESCRIPTION: Clears all fixed and general purpose status bits

 *

 ******************************************************************************/

acpi_status

acpi_hw_clear_acpi_status (

        u32                             flags)

{

        acpi_status                     status;

        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_evt_blk.address));

        if (flags & ACPI_MTX_LOCK) {

                status = acpi_ut_acquire_mutex (ACPI_MTX_HARDWARE);

                if (ACPI_FAILURE (status)) {

                        return_ACPI_STATUS (status);

                }

        }

        status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, 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_evt_blk.address) {

                status = acpi_hw_low_level_write (16, ACPI_BITMASK_ALL_FIXED_STATUS,

                                 &acpi_gbl_FADT->xpm1b_evt_blk);

                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);

unlock_and_exit:

        if (flags & ACPI_MTX_LOCK) {

                (void) acpi_ut_release_mutex (ACPI_MTX_HARDWARE);

        }

        return_ACPI_STATUS (status);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_get_sleep_type_data

 *

 * PARAMETERS:  sleep_state         - Numeric sleep state

 *              *sleep_type_a        - Where SLP_TYPa is returned

 *              *sleep_type_b        - Where SLP_TYPb is returned

 *

 * RETURN:      Status - ACPI status

 *

 * DESCRIPTION: Obtain the SLP_TYPa and SLP_TYPb values for the requested sleep

 *              state.

 *

 ******************************************************************************/

acpi_status

acpi_get_sleep_type_data (

        u8                              sleep_state,

        u8                              *sleep_type_a,

        u8                              *sleep_type_b)

{

        acpi_status                     status = AE_OK;

        union acpi_operand_object       *obj_desc;

        ACPI_FUNCTION_TRACE ("acpi_get_sleep_type_data");

        /*

         * Validate parameters

         */

        if ((sleep_state > ACPI_S_STATES_MAX) ||

                !sleep_type_a || !sleep_type_b) {

                return_ACPI_STATUS (AE_BAD_PARAMETER);

        }

        /*

         * Evaluate the namespace object containing the values for this state

         */

        status = acpi_ns_evaluate_by_name ((char *) acpi_gbl_sleep_state_names[sleep_state],

                          NULL, &obj_desc);

        if (ACPI_FAILURE (status)) {

                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%s while evaluating sleep_state [%s]\n",

                        acpi_format_exception (status), acpi_gbl_sleep_state_names[sleep_state]));

                return_ACPI_STATUS (status);

        }

        /* Must have a return object */

        if (!obj_desc) {

                ACPI_REPORT_ERROR (("Missing Sleep State object\n"));

                status = AE_NOT_EXIST;

        }

        /* It must be of type Package */

        else if (ACPI_GET_OBJECT_TYPE (obj_desc) != ACPI_TYPE_PACKAGE) {

                ACPI_REPORT_ERROR (("Sleep State object not a Package\n"));

                status = AE_AML_OPERAND_TYPE;

        }

        /* The package must have at least two elements */

        else if (obj_desc->package.count < 2) {

                ACPI_REPORT_ERROR (("Sleep State package does not have at least two elements\n"));

                status = AE_AML_NO_OPERAND;

        }

        /* The first two elements must both be of type Integer */

        else if ((ACPI_GET_OBJECT_TYPE (obj_desc->package.elements[0]) != ACPI_TYPE_INTEGER) ||

                         (ACPI_GET_OBJECT_TYPE (obj_desc->package.elements[1]) != ACPI_TYPE_INTEGER)) {

                ACPI_REPORT_ERROR (("Sleep State package elements are not both Integers (%s, %s)\n",

                        acpi_ut_get_object_type_name (obj_desc->package.elements[0]),

                        acpi_ut_get_object_type_name (obj_desc->package.elements[1])));

                status = AE_AML_OPERAND_TYPE;

        }

        else {

                /*

                 * Valid _Sx_ package size, type, and value

                 */

                *sleep_type_a = (u8) (obj_desc->package.elements[0])->integer.value;

                *sleep_type_b = (u8) (obj_desc->package.elements[1])->integer.value;

        }

        if (ACPI_FAILURE (status)) {

                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "While evaluating sleep_state [%s], bad Sleep object %p type %s\n",

                        acpi_gbl_sleep_state_names[sleep_state], obj_desc, acpi_ut_get_object_type_name (obj_desc)));

        }

        acpi_ut_remove_reference (obj_desc);

        return_ACPI_STATUS (status);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_hw_get_register_bit_mask

 *

 * PARAMETERS:  register_id         - Index of ACPI Register to access

 *

 * RETURN:      The bit mask to be used when accessing the register

 *

 * DESCRIPTION: Map register_id into a register bit mask.

 *

 ******************************************************************************/

struct acpi_bit_register_info *

acpi_hw_get_bit_register_info (

        u32                             register_id)

{

        ACPI_FUNCTION_NAME ("hw_get_bit_register_info");

        if (register_id > ACPI_BITREG_MAX) {

                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid bit_register ID: %X\n", register_id));

                return (NULL);

        }

        return (&acpi_gbl_bit_register_info[register_id]);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_get_register

 *

 * PARAMETERS:  register_id     - ID of ACPI bit_register to access

 *              return_value    - Value that was read from the register

 *              Flags           - Lock the hardware or not

 *

 * RETURN:      Value is read from specified Register.  Value returned is

 *              normalized to bit0 (is shifted all the way right)

 *

 * DESCRIPTION: ACPI bit_register read function.

 *

 ******************************************************************************/

acpi_status

acpi_get_register (

        u32                             register_id,

        u32                             *return_value,

        u32                             flags)

{

        u32                             register_value = 0;

        struct acpi_bit_register_info   *bit_reg_info;

        acpi_status                     status;

        ACPI_FUNCTION_TRACE ("acpi_get_register");

        /* Get the info structure corresponding to the requested ACPI Register */

        bit_reg_info = acpi_hw_get_bit_register_info (register_id);

        if (!bit_reg_info) {

                return_ACPI_STATUS (AE_BAD_PARAMETER);

        }

        if (flags & ACPI_MTX_LOCK) {

                status = acpi_ut_acquire_mutex (ACPI_MTX_HARDWARE);

                if (ACPI_FAILURE (status)) {

                        return_ACPI_STATUS (status);

                }

        }

        status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK,

                          bit_reg_info->parent_register, &register_value);

        if (flags & ACPI_MTX_LOCK) {

                (void) acpi_ut_release_mutex (ACPI_MTX_HARDWARE);

        }

        if (ACPI_SUCCESS (status)) {

                /* Normalize the value that was read */

                register_value = ((register_value & bit_reg_info->access_bit_mask)

                                   >> bit_reg_info->bit_position);

                *return_value = register_value;

                ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Read value %8.8X register %X\n",

                                register_value, bit_reg_info->parent_register));

        }

        return_ACPI_STATUS (status);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_set_register

 *

 * PARAMETERS:  register_id     - ID of ACPI bit_register to access

 *              Value           - (only used on write) value to write to the

 *                                Register, NOT pre-normalized to the bit pos.

 *              Flags           - Lock the hardware or not

 *

 * RETURN:      None

 *

 * DESCRIPTION: ACPI Bit Register write function.

 *

 ******************************************************************************/

acpi_status

acpi_set_register (

        u32                             register_id,

        u32                             value,

        u32                             flags)

{

        u32                             register_value = 0;

        struct acpi_bit_register_info   *bit_reg_info;

        acpi_status                     status;

        ACPI_FUNCTION_TRACE_U32 ("acpi_set_register", register_id);

        /* Get the info structure corresponding to the requested ACPI Register */

        bit_reg_info = acpi_hw_get_bit_register_info (register_id);

        if (!bit_reg_info) {

                ACPI_REPORT_ERROR (("Bad ACPI HW register_id: %X\n", register_id));

                return_ACPI_STATUS (AE_BAD_PARAMETER);

        }

        if (flags & ACPI_MTX_LOCK) {

                status = acpi_ut_acquire_mutex (ACPI_MTX_HARDWARE);

                if (ACPI_FAILURE (status)) {

                        return_ACPI_STATUS (status);

                }

        }

        /* Always do a register read first so we can insert the new bits  */

        status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK,

                          bit_reg_info->parent_register, &register_value);

        if (ACPI_FAILURE (status)) {

                goto unlock_and_exit;

        }

        /*

         * Decode the Register ID

         * Register ID = [Register block ID] | [bit ID]

         *

         * Check bit ID to fine locate Register offset.

         * Check Mask to determine Register offset, and then read-write.

         */

        switch (bit_reg_info->parent_register) {

        case ACPI_REGISTER_PM1_STATUS:

                /*

                 * Status Registers are different from the rest.  Clear by

                 * writing 1, and writing 0 has no effect.  So, the only relevant

                 * information is the single bit we're interested in, all others should

                 * be written as 0 so they will be left unchanged.

                 */

                value = ACPI_REGISTER_PREPARE_BITS (value,

                                 bit_reg_info->bit_position, bit_reg_info->access_bit_mask);

                if (value) {

                        status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,

                                         ACPI_REGISTER_PM1_STATUS, (u16) value);

                        register_value = 0;

                }

                break;

        case ACPI_REGISTER_PM1_ENABLE:

                ACPI_REGISTER_INSERT_VALUE (register_value, bit_reg_info->bit_position,

                                bit_reg_info->access_bit_mask, value);

                status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,

                                  ACPI_REGISTER_PM1_ENABLE, (u16) register_value);

                break;

        case ACPI_REGISTER_PM1_CONTROL:

                /*

                 * Write the PM1 Control register.

                 * Note that at this level, the fact that there are actually TWO

                 * registers (A and B - and B may not exist) is abstracted.

                 */

                ACPI_DEBUG_PRINT ((ACPI_DB_IO, "PM1 control: Read %X\n", register_value));

                ACPI_REGISTER_INSERT_VALUE (register_value, bit_reg_info->bit_position,

                                bit_reg_info->access_bit_mask, value);

                status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,

                                  ACPI_REGISTER_PM1_CONTROL, (u16) register_value);

                break;

        case ACPI_REGISTER_PM2_CONTROL:

                status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK,

                                 ACPI_REGISTER_PM2_CONTROL, &register_value);

                if (ACPI_FAILURE (status)) {

                        goto unlock_and_exit;

                }

                ACPI_DEBUG_PRINT ((ACPI_DB_IO, "PM2 control: Read %X from %8.8X%8.8X\n",

                        register_value,

                        ACPI_FORMAT_UINT64 (acpi_gbl_FADT->xpm2_cnt_blk.address)));

                ACPI_REGISTER_INSERT_VALUE (register_value, bit_reg_info->bit_position,

                                bit_reg_info->access_bit_mask, value);

                ACPI_DEBUG_PRINT ((ACPI_DB_IO, "About to write %4.4X to %8.8X%8.8X\n",

                        register_value,

                        ACPI_FORMAT_UINT64 (acpi_gbl_FADT->xpm2_cnt_blk.address)));

                status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,

                                   ACPI_REGISTER_PM2_CONTROL, (u8) (register_value));

                break;

        default:

                break;

        }

unlock_and_exit:

        if (flags & ACPI_MTX_LOCK) {

                (void) acpi_ut_release_mutex (ACPI_MTX_HARDWARE);

        }

        /* Normalize the value that was read */

        ACPI_DEBUG_EXEC (register_value = ((register_value & bit_reg_info->access_bit_mask) >> bit_reg_info->bit_position));

        ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Set bits: %8.8X actual %8.8X register %X\n",

                        value, register_value, bit_reg_info->parent_register));

        return_ACPI_STATUS (status);

}

/******************************************************************************

 *

 * FUNCTION:    acpi_hw_register_read

 *

 * PARAMETERS:  use_lock               - Mutex hw access.

 *              register_id            - register_iD + Offset.

 *

 * RETURN:      Value read or written.

 *

 * DESCRIPTION: Acpi register read function.  Registers are read at the

 *              given offset.

 *

 ******************************************************************************/

acpi_status

acpi_hw_register_read (

        u8                              use_lock,

        u32                             register_id,

        u32                             *return_value)

{

        u32                             value1 = 0;

        u32                             value2 = 0;

        acpi_status                     status;

        ACPI_FUNCTION_TRACE ("hw_register_read");

        if (ACPI_MTX_LOCK == use_lock) {

                status = acpi_ut_acquire_mutex (ACPI_MTX_HARDWARE);

                if (ACPI_FAILURE (status)) {

                        return_ACPI_STATUS (status);

                }

        }

        switch (register_id) {

        case ACPI_REGISTER_PM1_STATUS:           /* 16-bit access */

                status = acpi_hw_low_level_read (16, &value1, &acpi_gbl_FADT->xpm1a_evt_blk);

                if (ACPI_FAILURE (status)) {

                        goto unlock_and_exit;

                }

                /* PM1B is optional */

                status = acpi_hw_low_level_read (16, &value2, &acpi_gbl_FADT->xpm1b_evt_blk);

                value1 |= value2;

                break;

        case ACPI_REGISTER_PM1_ENABLE:           /* 16-bit access */

                status = acpi_hw_low_level_read (16, &value1, &acpi_gbl_xpm1a_enable);

                if (ACPI_FAILURE (status)) {

                        goto unlock_and_exit;

                }

                /* PM1B is optional */

                status = acpi_hw_low_level_read (16, &value2, &acpi_gbl_xpm1b_enable);

                value1 |= value2;

                break;

        case ACPI_REGISTER_PM1_CONTROL:          /* 16-bit access */

                status = acpi_hw_low_level_read (16, &value1, &acpi_gbl_FADT->xpm1a_cnt_blk);

                if (ACPI_FAILURE (status)) {

                        goto unlock_and_exit;

                }

                status = acpi_hw_low_level_read (16, &value2, &acpi_gbl_FADT->xpm1b_cnt_blk);

                value1 |= value2;

                break;

        case ACPI_REGISTER_PM2_CONTROL:          /* 8-bit access */

                status = acpi_hw_low_level_read (8, &value1, &acpi_gbl_FADT->xpm2_cnt_blk);

                break;

        case ACPI_REGISTER_PM_TIMER:             /* 32-bit access */

                status = acpi_hw_low_level_read (32, &value1, &acpi_gbl_FADT->xpm_tmr_blk);

                break;

        case ACPI_REGISTER_SMI_COMMAND_BLOCK:    /* 8-bit access */

                status = acpi_os_read_port (acpi_gbl_FADT->smi_cmd, &value1, 8);

                break;

        default:

                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Register ID: %X\n", register_id));

                status = AE_BAD_PARAMETER;

                break;

        }

unlock_and_exit:

        if (ACPI_MTX_LOCK == use_lock) {

                (void) acpi_ut_release_mutex (ACPI_MTX_HARDWARE);

        }

        if (ACPI_SUCCESS (status)) {

                *return_value = value1;

        }

        return_ACPI_STATUS (status);

}

/******************************************************************************

 *

 * FUNCTION:    acpi_hw_register_write

 *

 * PARAMETERS:  use_lock               - Mutex hw access.

 *              register_id            - register_iD + Offset.

 *

 * RETURN:      Value read or written.

 *

 * DESCRIPTION: Acpi register Write function.  Registers are written at the

 *              given offset.

 *

 ******************************************************************************/

acpi_status

acpi_hw_register_write (

        u8                              use_lock,

        u32                             register_id,

        u32                             value)

{

        acpi_status                     status;

        ACPI_FUNCTION_TRACE ("hw_register_write");

        if (ACPI_MTX_LOCK == use_lock) {

                status = acpi_ut_acquire_mutex (ACPI_MTX_HARDWARE);

                if (ACPI_FAILURE (status)) {

                        return_ACPI_STATUS (status);

                }

        }

        switch (register_id) {

        case ACPI_REGISTER_PM1_STATUS:           /* 16-bit access */

                status = acpi_hw_low_level_write (16, value, &acpi_gbl_FADT->xpm1a_evt_blk);

                if (ACPI_FAILURE (status)) {

                        goto unlock_and_exit;

                }

                /* PM1B is optional */

                status = acpi_hw_low_level_write (16, value, &acpi_gbl_FADT->xpm1b_evt_blk);

                break;

        case ACPI_REGISTER_PM1_ENABLE:           /* 16-bit access*/

                status = acpi_hw_low_level_write (16, value, &acpi_gbl_xpm1a_enable);

                if (ACPI_FAILURE (status)) {

                        goto unlock_and_exit;

                }

                /* PM1B is optional */

                status = acpi_hw_low_level_write (16, value, &acpi_gbl_xpm1b_enable);

                break;

        case ACPI_REGISTER_PM1_CONTROL:          /* 16-bit access */

                status = acpi_hw_low_level_write (16, value, &acpi_gbl_FADT->xpm1a_cnt_blk);

                if (ACPI_FAILURE (status)) {

                        goto unlock_and_exit;

                }

                status = acpi_hw_low_level_write (16, value, &acpi_gbl_FADT->xpm1b_cnt_blk);

                break;

        case ACPI_REGISTER_PM1A_CONTROL:         /* 16-bit access */

                status = acpi_hw_low_level_write (16, value, &acpi_gbl_FADT->xpm1a_cnt_blk);

                break;

        case ACPI_REGISTER_PM1B_CONTROL:         /* 16-bit access */

                status = acpi_hw_low_level_write (16, value, &acpi_gbl_FADT->xpm1b_cnt_blk);

                break;

        case ACPI_REGISTER_PM2_CONTROL:          /* 8-bit access */

                status = acpi_hw_low_level_write (8, value, &acpi_gbl_FADT->xpm2_cnt_blk);

                break;

        case ACPI_REGISTER_PM_TIMER:             /* 32-bit access */

                status = acpi_hw_low_level_write (32, value, &acpi_gbl_FADT->xpm_tmr_blk);

                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_cmd, value, 8);

                break;

        default:

                status = AE_BAD_PARAMETER;

                break;

        }

unlock_and_exit:

        if (ACPI_MTX_LOCK == use_lock) {

                (void) acpi_ut_release_mutex (ACPI_MTX_HARDWARE);

        }

        return_ACPI_STATUS (status);

}

/******************************************************************************

 *

 * FUNCTION:    acpi_hw_low_level_read

 *

 * PARAMETERS:  Width               - 8, 16, or 32

 *              Value               - Where the value is returned

 *              Register            - GAS register structure

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Read from either memory, IO, or PCI config space.

 *

 ******************************************************************************/

acpi_status

acpi_hw_low_level_read (

        u32                             width,

        u32                             *value,

        struct acpi_generic_address     *reg)

{

        struct acpi_pci_id              pci_id;

        u16                             pci_register;

        acpi_status                     status;

        ACPI_FUNCTION_NAME ("hw_low_level_read");

        /*

         * Must have a valid pointer to a GAS structure, and

         * a non-zero address within. However, don't return an error

         * because the PM1A/B code must not fail if B isn't present.

         */

        if ((!reg) ||

                (!reg->address)) {

                return (AE_OK);

        }

        *value = 0;

        /*

         * Three address spaces supported:

         * Memory, IO, or PCI_Config.

         */

        switch (reg->address_space_id) {

        case ACPI_ADR_SPACE_SYSTEM_MEMORY:

                status = acpi_os_read_memory (

                                 (acpi_physical_address) reg->address,

                                 value, width);

                break;

        case ACPI_ADR_SPACE_SYSTEM_IO:

                status = acpi_os_read_port ((acpi_io_address) reg->address,

                                 value, width);

                break;

        case ACPI_ADR_SPACE_PCI_CONFIG:

                pci_id.segment = 0;

                pci_id.bus     = 0;

                pci_id.device  = ACPI_PCI_DEVICE (reg->address);

                pci_id.function = ACPI_PCI_FUNCTION (reg->address);

                pci_register   = (u16) ACPI_PCI_REGISTER (reg->address);