1 files changed, 499 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c
new file mode 100644
index 00000000000..ceb269e45ab
--- /dev/null
+++ b/drivers/acpi/acpica/exregion.c
@@ -0,0 +1,499 @@
+
+/******************************************************************************
+ *
+ * Module Name: exregion - ACPI default op_region (address space) handlers
+ *
+ *****************************************************************************/
+
+/*
+ * 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/acinterp.h>
+
+#define _COMPONENT          ACPI_EXECUTER
+ACPI_MODULE_NAME("exregion")
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_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_ex_system_memory_space_handler(u32 function,
+                                    acpi_physical_address address,
+                                    u32 bit_width,
+                                    acpi_integer * value,
+                                    void *handler_context, void *region_context)
+{
+        acpi_status status = AE_OK;
+        void *logical_addr_ptr = NULL;
+        struct acpi_mem_space_context *mem_info = region_context;
+        u32 length;
+        acpi_size window_size;
+#ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
+        u32 remainder;
+#endif
+
+        ACPI_FUNCTION_TRACE(ex_system_memory_space_handler);
+
+        /* Validate and translate the bit width */
+
+        switch (bit_width) {
+        case 8:
+                length = 1;
+                break;
+
+        case 16:
+                length = 2;
+                break;
+
+        case 32:
+                length = 4;
+                break;
+
+        case 64:
+                length = 8;
+                break;
+
+        default:
+                ACPI_ERROR((AE_INFO, "Invalid SystemMemory width %d",
+                            bit_width));
+                return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
+        }
+
+#ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
+        /*
+         * Hardware does not support non-aligned data transfers, we must verify
+         * the request.
+         */
+        (void)acpi_ut_short_divide((acpi_integer) address, length, NULL,
+                                   &remainder);
+        if (remainder != 0) {
+                return_ACPI_STATUS(AE_AML_ALIGNMENT);
+        }
+#endif
+
+        /*
+         * 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);
+                }
+
+                /*
+                 * Don't attempt to map memory beyond the end of the region, and
+                 * constrain the maximum mapping size to something reasonable.
+                 */
+                window_size = (acpi_size)
+                    ((mem_info->address + mem_info->length) - address);
+
+                if (window_size > ACPI_SYSMEM_REGION_WINDOW_SIZE) {
+                        window_size = ACPI_SYSMEM_REGION_WINDOW_SIZE;
+                }
+
+                /* Create a new mapping starting at the address given */
+
+                mem_info->mapped_logical_address =
+                        acpi_os_map_memory((acpi_physical_address) address, window_size);
+                if (!mem_info->mapped_logical_address) {
+                        ACPI_ERROR((AE_INFO,
+                                    "Could not map memory at %8.8X%8.8X, size %X",
+                                    ACPI_FORMAT_NATIVE_UINT(address),
+                                    (u32) window_size));
+                        mem_info->mapped_length = 0;
+                        return_ACPI_STATUS(AE_NO_MEMORY);
+                }
+
+                /* Save the physical address and mapping size */
+
+                mem_info->mapped_physical_address = address;
+                mem_info->mapped_length = window_size;
+        }
+
+        /*
+         * Generate a logical pointer corresponding to the address we want to
+         * access
+         */
+        logical_addr_ptr = mem_info->mapped_logical_address +
+            ((acpi_integer) address -
+             (acpi_integer) mem_info->mapped_physical_address);
+
+        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                          "System-Memory (width %d) R/W %d Address=%8.8X%8.8X\n",
+                          bit_width, function,
+                          ACPI_FORMAT_NATIVE_UINT(address)));
+
+        /*
+         * Perform the memory read or write
+         *
+         * Note: For machines that do not support non-aligned transfers, the target
+         * address was checked for alignment above.  We do not attempt to break the
+         * transfer up into smaller (byte-size) chunks because the AML specifically
+         * asked for a transfer width that the hardware may require.
+         */
+        switch (function) {
+        case ACPI_READ:
+
+                *value = 0;
+                switch (bit_width) {
+                case 8:
+                        *value = (acpi_integer) ACPI_GET8(logical_addr_ptr);
+                        break;
+
+                case 16:
+                        *value = (acpi_integer) ACPI_GET16(logical_addr_ptr);
+                        break;
+
+                case 32:
+                        *value = (acpi_integer) ACPI_GET32(logical_addr_ptr);
+                        break;
+
+                case 64:
+                        *value = (acpi_integer) ACPI_GET64(logical_addr_ptr);
+                        break;
+
+                default:
+                        /* bit_width was already validated */
+                        break;
+                }
+                break;
+
+        case ACPI_WRITE:
+
+                switch (bit_width) {
+                case 8:
+                        ACPI_SET8(logical_addr_ptr) = (u8) * value;
+                        break;
+
+                case 16:
+                        ACPI_SET16(logical_addr_ptr) = (u16) * value;
+                        break;
+
+                case 32:
+                        ACPI_SET32(logical_addr_ptr) = (u32) * value;
+                        break;
+
+                case 64:
+                        ACPI_SET64(logical_addr_ptr) = (u64) * value;
+                        break;
+
+                default:
+                        /* bit_width was already validated */
+                        break;
+                }
+                break;
+
+        default:
+                status = AE_BAD_PARAMETER;
+                break;
+        }
+
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_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_ex_system_io_space_handler(u32 function,
+                                acpi_physical_address address,
+                                u32 bit_width,
+                                acpi_integer * value,
+                                void *handler_context, void *region_context)
+{
+        acpi_status status = AE_OK;
+        u32 value32;
+
+        ACPI_FUNCTION_TRACE(ex_system_io_space_handler);
+
+        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                          "System-IO (width %d) R/W %d Address=%8.8X%8.8X\n",
+                          bit_width, function,
+                          ACPI_FORMAT_NATIVE_UINT(address)));
+
+        /* Decode the function parameter */
+
+        switch (function) {
+        case ACPI_READ:
+
+                status = acpi_os_read_port((acpi_io_address) address,
+                                           &value32, bit_width);
+                *value = value32;
+                break;
+
+        case ACPI_WRITE:
+
+                status = acpi_os_write_port((acpi_io_address) address,
+                                            (u32) * value, bit_width);
+                break;
+
+        default:
+                status = AE_BAD_PARAMETER;
+                break;
+        }
+
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_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_ex_pci_config_space_handler(u32 function,
+                                 acpi_physical_address address,
+                                 u32 bit_width,
+                                 acpi_integer * value,
+                                 void *handler_context, void *region_context)
+{
+        acpi_status status = AE_OK;
+        struct acpi_pci_id *pci_id;
+        u16 pci_register;
+        u32 value32;
+
+        ACPI_FUNCTION_TRACE(ex_pci_config_space_handler);
+
+        /*
+         *  The arguments to acpi_os(Read|Write)pci_configuration are:
+         *
+         *  pci_segment is the PCI bus segment range 0-31
+         *  pci_bus     is the PCI bus number range 0-255
+         *  pci_device  is the PCI device number range 0-31
+         *  pci_function is the PCI device function number
+         *  pci_register is the Config space register range 0-255 bytes
+         *
+         *  Value - input value for write, output address for read
+         *
+         */
+        pci_id = (struct acpi_pci_id *)region_context;
+        pci_register = (u16) (u32) address;
+
+        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                          "Pci-Config %d (%d) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n",
+                          function, bit_width, pci_id->segment, pci_id->bus,
+                          pci_id->device, pci_id->function, pci_register));
+
+        switch (function) {
+        case ACPI_READ:
+
+                status = acpi_os_read_pci_configuration(pci_id, pci_register,
+                                                        &value32, bit_width);
+                *value = value32;
+                break;
+
+        case ACPI_WRITE:
+
+                status = acpi_os_write_pci_configuration(pci_id, pci_register,
+                                                         *value, bit_width);
+                break;
+
+        default:
+
+                status = AE_BAD_PARAMETER;
+                break;
+        }
+
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_cmos_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 CMOS address space (Op Region)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_cmos_space_handler(u32 function,
+                           acpi_physical_address address,
+                           u32 bit_width,
+                           acpi_integer * value,
+                           void *handler_context, void *region_context)
+{
+        acpi_status status = AE_OK;
+
+        ACPI_FUNCTION_TRACE(ex_cmos_space_handler);
+
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_pci_bar_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 bar_target address space (Op Region)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_pci_bar_space_handler(u32 function,
+                              acpi_physical_address address,
+                              u32 bit_width,
+                              acpi_integer * value,
+                              void *handler_context, void *region_context)
+{
+        acpi_status status = AE_OK;
+
+        ACPI_FUNCTION_TRACE(ex_pci_bar_space_handler);
+
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_data_table_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 Data Table address space (Op Region)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_data_table_space_handler(u32 function,
+                                 acpi_physical_address address,
+                                 u32 bit_width,
+                                 acpi_integer * value,
+                                 void *handler_context, void *region_context)
+{
+        ACPI_FUNCTION_TRACE(ex_data_table_space_handler);
+
+        /* Perform the memory read or write */
+
+        switch (function) {
+        case ACPI_READ:
+
+                ACPI_MEMCPY(ACPI_CAST_PTR(char, value),
+                            ACPI_PHYSADDR_TO_PTR(address),
+                            ACPI_DIV_8(bit_width));
+                break;
+
+        case ACPI_WRITE:
+        default:
+
+                return_ACPI_STATUS(AE_SUPPORT);
+        }
+
+        return_ACPI_STATUS(AE_OK);
+}