patch-2.4.6 linux/drivers/acpi/interpreter/amregion.c
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- Lines: 421
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.4.5/linux/drivers/acpi/interpreter/amregion.c
- Orig date:
Mon Jan 22 13:23:42 2001
diff -u --recursive --new-file v2.4.5/linux/drivers/acpi/interpreter/amregion.c linux/drivers/acpi/interpreter/amregion.c
@@ -1,420 +0,0 @@
-
-/******************************************************************************
- *
- * Module Name: amregion - ACPI default Op_region (address space) handlers
- * $Revision: 44 $
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000, 2001 R. Byron Moore
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-
-#include "acpi.h"
-#include "acinterp.h"
-#include "amlcode.h"
-#include "acnamesp.h"
-#include "achware.h"
-#include "acevents.h"
-
-
-#define _COMPONENT INTERPRETER
- MODULE_NAME ("amregion")
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_aml_system_memory_space_handler
- *
- * PARAMETERS: Function - Read or Write operation
- * Address - Where in the space to read or write
- * Bit_width - Field width in bits (8, 16, or 32)
- * Value - Pointer to in or out value
- * Handler_context - Pointer to Handler's context
- * Region_context - Pointer to context specific to the
- * accessed region
- *
- * RETURN: Status
- *
- * DESCRIPTION: Handler for the System Memory address space (Op Region)
- *
- ******************************************************************************/
-
-ACPI_STATUS
-acpi_aml_system_memory_space_handler (
- u32 function,
- ACPI_PHYSICAL_ADDRESS address,
- u32 bit_width,
- u32 *value,
- void *handler_context,
- void *region_context)
-{
- ACPI_STATUS status = AE_OK;
- void *logical_addr_ptr = NULL;
- MEM_HANDLER_CONTEXT *mem_info = region_context;
- u32 length;
-
-
- /* Validate and translate the bit width */
-
- switch (bit_width)
- {
- case 8:
- length = 1;
- break;
-
- case 16:
- length = 2;
- break;
-
- case 32:
- length = 4;
- break;
-
- default:
- return (AE_AML_OPERAND_VALUE);
- break;
- }
-
-
- /*
- * Does the request fit into the cached memory mapping?
- * Is 1) Address below the current mapping? OR
- * 2) Address beyond the current mapping?
- */
-
- if ((address < mem_info->mapped_physical_address) ||
- (((ACPI_INTEGER) address + length) >
- ((ACPI_INTEGER) mem_info->mapped_physical_address + mem_info->mapped_length)))
- {
- /*
- * The request cannot be resolved by the current memory mapping;
- * Delete the existing mapping and create a new one.
- */
-
- if (mem_info->mapped_length) {
- /* Valid mapping, delete it */
-
- acpi_os_unmap_memory (mem_info->mapped_logical_address,
- mem_info->mapped_length);
- }
-
- mem_info->mapped_length = 0; /* In case of failure below */
-
- /* Create a new mapping starting at the address given */
-
- status = acpi_os_map_memory (address, SYSMEM_REGION_WINDOW_SIZE,
- (void **) &mem_info->mapped_logical_address);
- if (ACPI_FAILURE (status)) {
- return (status);
- }
-
- /* TBD: should these pointers go to 64-bit in all cases ? */
-
- mem_info->mapped_physical_address = address;
- mem_info->mapped_length = SYSMEM_REGION_WINDOW_SIZE;
- }
-
-
- /*
- * Generate a logical pointer corresponding to the address we want to
- * access
- */
-
- /* TBD: should these pointers go to 64-bit in all cases ? */
-
- logical_addr_ptr = mem_info->mapped_logical_address +
- ((ACPI_INTEGER) address - (ACPI_INTEGER) mem_info->mapped_physical_address);
-
- /* Perform the memory read or write */
-
- switch (function)
- {
-
- case ADDRESS_SPACE_READ:
-
- switch (bit_width)
- {
- case 8:
- *value = (u32)* (u8 *) logical_addr_ptr;
- break;
-
- case 16:
- MOVE_UNALIGNED16_TO_32 (value, logical_addr_ptr);
- break;
-
- case 32:
- MOVE_UNALIGNED32_TO_32 (value, logical_addr_ptr);
- break;
- }
-
- break;
-
-
- case ADDRESS_SPACE_WRITE:
-
- switch (bit_width)
- {
- case 8:
- *(u8 *) logical_addr_ptr = (u8) *value;
- break;
-
- case 16:
- MOVE_UNALIGNED16_TO_16 (logical_addr_ptr, value);
- break;
-
- case 32:
- MOVE_UNALIGNED32_TO_32 (logical_addr_ptr, value);
- break;
- }
-
- break;
-
-
- default:
- status = AE_BAD_PARAMETER;
- break;
- }
-
- return (status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_aml_system_io_space_handler
- *
- * PARAMETERS: Function - Read or Write operation
- * Address - Where in the space to read or write
- * Bit_width - Field width in bits (8, 16, or 32)
- * Value - Pointer to in or out value
- * Handler_context - Pointer to Handler's context
- * Region_context - Pointer to context specific to the
- * accessed region
- *
- * RETURN: Status
- *
- * DESCRIPTION: Handler for the System IO address space (Op Region)
- *
- ******************************************************************************/
-
-ACPI_STATUS
-acpi_aml_system_io_space_handler (
- u32 function,
- ACPI_PHYSICAL_ADDRESS address,
- u32 bit_width,
- u32 *value,
- void *handler_context,
- void *region_context)
-{
- ACPI_STATUS status = AE_OK;
-
-
- /* Decode the function parameter */
-
- switch (function)
- {
-
- case ADDRESS_SPACE_READ:
-
- switch (bit_width)
- {
- /* I/O Port width */
-
- case 8:
- *value = (u32) acpi_os_in8 ((ACPI_IO_ADDRESS) address);
- break;
-
- case 16:
- *value = (u32) acpi_os_in16 ((ACPI_IO_ADDRESS) address);
- break;
-
- case 32:
- *value = acpi_os_in32 ((ACPI_IO_ADDRESS) address);
- break;
-
- default:
- status = AE_AML_OPERAND_VALUE;
- }
-
- break;
-
-
- case ADDRESS_SPACE_WRITE:
-
- switch (bit_width)
- {
- /* I/O Port width */
- case 8:
- acpi_os_out8 ((ACPI_IO_ADDRESS) address, (u8) *value);
- break;
-
- case 16:
- acpi_os_out16 ((ACPI_IO_ADDRESS) address, (u16) *value);
- break;
-
- case 32:
- acpi_os_out32 ((ACPI_IO_ADDRESS) address, *value);
- break;
-
- default:
- status = AE_AML_OPERAND_VALUE;
- }
-
- break;
-
-
- default:
- status = AE_BAD_PARAMETER;
- break;
- }
-
- return (status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_aml_pci_config_space_handler
- *
- * PARAMETERS: Function - Read or Write operation
- * Address - Where in the space to read or write
- * Bit_width - Field width in bits (8, 16, or 32)
- * Value - Pointer to in or out value
- * Handler_context - Pointer to Handler's context
- * Region_context - Pointer to context specific to the
- * accessed region
- *
- * RETURN: Status
- *
- * DESCRIPTION: Handler for the PCI Config address space (Op Region)
- *
- ******************************************************************************/
-
-ACPI_STATUS
-acpi_aml_pci_config_space_handler (
- u32 function,
- ACPI_PHYSICAL_ADDRESS address,
- u32 bit_width,
- u32 *value,
- void *handler_context,
- void *region_context)
-{
- ACPI_STATUS status = AE_OK;
- u32 pci_bus;
- u32 dev_func;
- u8 pci_reg;
- PCI_HANDLER_CONTEXT *PCIcontext;
-
-
- /*
- * The arguments to Acpi_os(Read|Write)Pci_cfg(Byte|Word|Dword) are:
- *
- * Seg_bus - 0xSSSSBBBB - SSSS is the PCI bus segment
- * BBBB is the PCI bus number
- *
- * Dev_func - 0xDDDDFFFF - DDDD is the PCI device number
- * FFFF is the PCI device function number
- *
- * Reg_num - Config space register must be < 40h
- *
- * Value - input value for write, output for read
- *
- */
-
- PCIcontext = (PCI_HANDLER_CONTEXT *) region_context;
-
- pci_bus = LOWORD(PCIcontext->seg) << 16;
- pci_bus |= LOWORD(PCIcontext->bus);
-
- dev_func = PCIcontext->dev_func;
-
- pci_reg = (u8) address;
-
- switch (function)
- {
-
- case ADDRESS_SPACE_READ:
-
- *value = 0;
-
- switch (bit_width)
- {
- /* PCI Register width */
-
- case 8:
- status = acpi_os_read_pci_cfg_byte (pci_bus, dev_func, pci_reg,
- (u8 *) value);
- break;
-
- case 16:
- status = acpi_os_read_pci_cfg_word (pci_bus, dev_func, pci_reg,
- (u16 *) value);
- break;
-
- case 32:
- status = acpi_os_read_pci_cfg_dword (pci_bus, dev_func, pci_reg,
- value);
- break;
-
- default:
- status = AE_AML_OPERAND_VALUE;
-
- } /* Switch bit_width */
-
- break;
-
-
- case ADDRESS_SPACE_WRITE:
-
- switch (bit_width)
- {
- /* PCI Register width */
-
- case 8:
- status = acpi_os_write_pci_cfg_byte (pci_bus, dev_func, pci_reg,
- *(u8 *) value);
- break;
-
- case 16:
- status = acpi_os_write_pci_cfg_word (pci_bus, dev_func, pci_reg,
- *(u16 *) value);
- break;
-
- case 32:
- status = acpi_os_write_pci_cfg_dword (pci_bus, dev_func, pci_reg,
- *value);
- break;
-
- default:
- status = AE_AML_OPERAND_VALUE;
-
- } /* Switch bit_width */
-
- break;
-
-
- default:
-
- status = AE_BAD_PARAMETER;
- break;
-
- }
-
- return (status);
-}
-
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