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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [acpi/] [executer/] [exregion.c] - Blame information for rev 1765

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/******************************************************************************
 *
 * Module Name: exregion - ACPI default op_region (address space) handlers
 *
 *****************************************************************************/
 
/*
 * 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/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;
#ifndef ACPI_MISALIGNED_TRANSFERS
        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_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid system_memory width %d\n",
                        bit_width));
                return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
        }
 
 
#ifndef ACPI_MISALIGNED_TRANSFERS
        /*
         * 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 */
 
                status = acpi_os_map_memory (address, window_size,
                                  (void **) &mem_info->mapped_logical_address);
                if (ACPI_FAILURE (status)) {
                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not map memory at %8.8X%8.8X, size %X\n",
                                        ACPI_FORMAT_UINT64 (address), (u32) window_size));
                        mem_info->mapped_length = 0;
                        return_ACPI_STATUS (status);
                }
 
                /* 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 %d (%d width) Address=%8.8X%8.8X\n", function, bit_width,
                        ACPI_FORMAT_UINT64 (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) *((u8 *) logical_addr_ptr);
                        break;
 
                case 16:
                        *value = (acpi_integer) *((u16 *) logical_addr_ptr);
                        break;
 
                case 32:
                        *value = (acpi_integer) *((u32 *) logical_addr_ptr);
                        break;
 
#if ACPI_MACHINE_WIDTH != 16
                case 64:
                        *value = (acpi_integer) *((u64 *) logical_addr_ptr);
                        break;
#endif
                default:
                        /* bit_width was already validated */
                        break;
                }
                break;
 
        case ACPI_WRITE:
 
                switch (bit_width) {
                case 8:
                        *(u8 *) logical_addr_ptr = (u8) *value;
                        break;
 
                case 16:
                        *(u16 *) logical_addr_ptr = (u16) *value;
                        break;
 
                case 32:
                        *(u32 *) logical_addr_ptr = (u32) *value;
                        break;
 
#if ACPI_MACHINE_WIDTH != 16
                case 64:
                        *(u64 *) logical_addr_ptr = (u64) *value;
                        break;
#endif
 
                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 %d (%d width) Address=%8.8X%8.8X\n", function, bit_width,
                        ACPI_FORMAT_UINT64 (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;
 
 
        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:
 
                *value = 0;
                status = acpi_os_read_pci_configuration (pci_id, pci_register, value, bit_width);
                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_status                     status = AE_OK;
        u32                             byte_width = ACPI_DIV_8 (bit_width);
        u32                             i;
        char                            *logical_addr_ptr;
 
 
        ACPI_FUNCTION_TRACE ("ex_data_table_space_handler");
 
 
        logical_addr_ptr = ACPI_PHYSADDR_TO_PTR (address);
 
 
   /* Perform the memory read or write */
 
        switch (function) {
        case ACPI_READ:
 
                for (i = 0; i < byte_width; i++) {
                        ((char *) value) [i] = logical_addr_ptr[i];
                }
                break;
 
        case ACPI_WRITE:
        default:
 
                return_ACPI_STATUS (AE_SUPPORT);
        }
 
        return_ACPI_STATUS (status);
}
 
 

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [acpi/] [executer/] [exregion.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	1275	phoenix
2			`/******************************************************************************`
3			`*`
4			`* Module Name: exregion - ACPI default op_region (address space) handlers`
5			`*`
6			`*****************************************************************************/`
7
8			`/*`
9			`* Copyright (C) 2000 - 2004, R. Byron Moore`
10			`* All rights reserved.`
11			`*`
12			`* Redistribution and use in source and binary forms, with or without`
13			`* modification, are permitted provided that the following conditions`
14			`* are met:`
15			`* 1. Redistributions of source code must retain the above copyright`
16			`* notice, this list of conditions, and the following disclaimer,`
17			`* without modification.`
18			`* 2. Redistributions in binary form must reproduce at minimum a disclaimer`
19			`* substantially similar to the "NO WARRANTY" disclaimer below`
20			`* ("Disclaimer") and any redistribution must be conditioned upon`
21			`* including a substantially similar Disclaimer requirement for further`
22			`* binary redistribution.`
23			`* 3. Neither the names of the above-listed copyright holders nor the names`
24			`* of any contributors may be used to endorse or promote products derived`
25			`* from this software without specific prior written permission.`
26			`*`
27			`* Alternatively, this software may be distributed under the terms of the`
28			`* GNU General Public License ("GPL") version 2 as published by the Free`
29			`* Software Foundation.`
30			`*`
31			`* NO WARRANTY`
32			`* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS`
33			`* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT`
34			`* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR`
35			`* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT`
36			`* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL`
37			`* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS`
38			`* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)`
39			`* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,`
40			`* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING`
41			`* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE`
42			`* POSSIBILITY OF SUCH DAMAGES.`
43			`*/`
44
45
46			`#include <acpi/acpi.h>`
47			`#include <acpi/acinterp.h>`
48
49
50			`#define _COMPONENT ACPI_EXECUTER`
51			`ACPI_MODULE_NAME ("exregion")`
52
53
54			`/*******************************************************************************`
55			`*`
56			`* FUNCTION: acpi_ex_system_memory_space_handler`
57			`*`
58			`* PARAMETERS: Function - Read or Write operation`
59			`* Address - Where in the space to read or write`
60			`* bit_width - Field width in bits (8, 16, or 32)`
61			`* Value - Pointer to in or out value`
62			`* handler_context - Pointer to Handler's context`
63			`* region_context - Pointer to context specific to the`
64			`* accessed region`
65			`*`
66			`* RETURN: Status`
67			`*`
68			`* DESCRIPTION: Handler for the System Memory address space (Op Region)`
69			`*`
70			`******************************************************************************/`
71
72			`acpi_status`
73			`acpi_ex_system_memory_space_handler (`
74			`u32 function,`
75			`acpi_physical_address address,`
76			`u32 bit_width,`
77			`acpi_integer *value,`
78			`void *handler_context,`
79			`void *region_context)`
80			`{`
81			`acpi_status status = AE_OK;`
82			`void *logical_addr_ptr = NULL;`
83			`struct acpi_mem_space_context *mem_info = region_context;`
84			`u32 length;`
85			`acpi_size window_size;`
86			`#ifndef ACPI_MISALIGNED_TRANSFERS`
87			`u32 remainder;`
88			`#endif`
89
90			`ACPI_FUNCTION_TRACE ("ex_system_memory_space_handler");`
91
92
93			`/* Validate and translate the bit width */`
94
95			`switch (bit_width) {`
96			`case 8:`
97			`length = 1;`
98			`break;`
99
100			`case 16:`
101			`length = 2;`
102			`break;`
103
104			`case 32:`
105			`length = 4;`
106			`break;`
107
108			`case 64:`
109			`length = 8;`
110			`break;`
111
112			`default:`
113			`ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid system_memory width %d\n",`
114			`bit_width));`
115			`return_ACPI_STATUS (AE_AML_OPERAND_VALUE);`
116			`}`
117
118
119			`#ifndef ACPI_MISALIGNED_TRANSFERS`
120			`/*`
121			`* Hardware does not support non-aligned data transfers, we must verify`
122			`* the request.`
123			`*/`
124			`(void) acpi_ut_short_divide ((acpi_integer *) &address, length, NULL, &remainder);`
125			`if (remainder != 0) {`
126			`return_ACPI_STATUS (AE_AML_ALIGNMENT);`
127			`}`
128			`#endif`
129
130			`/*`
131			`* Does the request fit into the cached memory mapping?`
132			`* Is 1) Address below the current mapping? OR`
133			`* 2) Address beyond the current mapping?`
134			`*/`
135			`if ((address < mem_info->mapped_physical_address) \|\|`
136			`(((acpi_integer) address + length) >`
137			`((acpi_integer) mem_info->mapped_physical_address + mem_info->mapped_length))) {`
138			`/*`
139			`* The request cannot be resolved by the current memory mapping;`
140			`* Delete the existing mapping and create a new one.`
141			`*/`
142			`if (mem_info->mapped_length) {`
143			`/* Valid mapping, delete it */`
144
145			`acpi_os_unmap_memory (mem_info->mapped_logical_address,`
146			`mem_info->mapped_length);`
147			`}`
148
149			`/*`
150			`* Don't attempt to map memory beyond the end of the region, and`
151			`* constrain the maximum mapping size to something reasonable.`
152			`*/`
153			`window_size = (acpi_size) ((mem_info->address + mem_info->length) - address);`
154			`if (window_size > ACPI_SYSMEM_REGION_WINDOW_SIZE) {`
155			`window_size = ACPI_SYSMEM_REGION_WINDOW_SIZE;`
156			`}`
157
158			`/* Create a new mapping starting at the address given */`
159
160			`status = acpi_os_map_memory (address, window_size,`
161			`(void **) &mem_info->mapped_logical_address);`
162			`if (ACPI_FAILURE (status)) {`
163			`ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not map memory at %8.8X%8.8X, size %X\n",`
164			`ACPI_FORMAT_UINT64 (address), (u32) window_size));`
165			`mem_info->mapped_length = 0;`
166			`return_ACPI_STATUS (status);`
167			`}`
168
169			`/* Save the physical address and mapping size */`
170
171			`mem_info->mapped_physical_address = address;`
172			`mem_info->mapped_length = window_size;`
173			`}`
174
175			`/*`
176			`* Generate a logical pointer corresponding to the address we want to`
177			`* access`
178			`*/`
179			`logical_addr_ptr = mem_info->mapped_logical_address +`
180			`((acpi_integer) address - (acpi_integer) mem_info->mapped_physical_address);`
181
182			`ACPI_DEBUG_PRINT ((ACPI_DB_INFO,`
183			`"system_memory %d (%d width) Address=%8.8X%8.8X\n", function, bit_width,`
184			`ACPI_FORMAT_UINT64 (address)));`
185
186			`/*`
187			`* Perform the memory read or write`
188			`*`
189			`* Note: For machines that do not support non-aligned transfers, the target`
190			`* address was checked for alignment above. We do not attempt to break the`
191			`* transfer up into smaller (byte-size) chunks because the AML specifically`
192			`* asked for a transfer width that the hardware may require.`
193			`*/`
194			`switch (function) {`
195			`case ACPI_READ:`
196
197			`*value = 0;`
198			`switch (bit_width) {`
199			`case 8:`
200			`value = (acpi_integer) ((u8 *) logical_addr_ptr);`
201			`break;`
202
203			`case 16:`
204			`value = (acpi_integer) ((u16 *) logical_addr_ptr);`
205			`break;`
206
207			`case 32:`
208			`value = (acpi_integer) ((u32 *) logical_addr_ptr);`
209			`break;`
210
211			`#if ACPI_MACHINE_WIDTH != 16`
212			`case 64:`
213			`value = (acpi_integer) ((u64 *) logical_addr_ptr);`
214			`break;`
215			`#endif`
216			`default:`
217			`/* bit_width was already validated */`
218			`break;`
219			`}`
220			`break;`
221
222			`case ACPI_WRITE:`
223
224			`switch (bit_width) {`
225			`case 8:`
226			`(u8 ) logical_addr_ptr = (u8) *value;`
227			`break;`
228
229			`case 16:`
230			`(u16 ) logical_addr_ptr = (u16) *value;`
231			`break;`
232
233			`case 32:`
234			`(u32 ) logical_addr_ptr = (u32) *value;`
235			`break;`
236
237			`#if ACPI_MACHINE_WIDTH != 16`
238			`case 64:`
239			`(u64 ) logical_addr_ptr = (u64) *value;`
240			`break;`
241			`#endif`
242
243			`default:`
244			`/* bit_width was already validated */`
245			`break;`
246			`}`
247			`break;`
248
249			`default:`
250			`status = AE_BAD_PARAMETER;`
251			`break;`
252			`}`
253
254			`return_ACPI_STATUS (status);`
255			`}`
256
257
258			`/*******************************************************************************`
259			`*`
260			`* FUNCTION: acpi_ex_system_io_space_handler`
261			`*`
262			`* PARAMETERS: Function - Read or Write operation`
263			`* Address - Where in the space to read or write`
264			`* bit_width - Field width in bits (8, 16, or 32)`
265			`* Value - Pointer to in or out value`
266			`* handler_context - Pointer to Handler's context`
267			`* region_context - Pointer to context specific to the`
268			`* accessed region`
269			`*`
270			`* RETURN: Status`
271			`*`
272			`* DESCRIPTION: Handler for the System IO address space (Op Region)`
273			`*`
274			`******************************************************************************/`
275
276			`acpi_status`
277			`acpi_ex_system_io_space_handler (`
278			`u32 function,`
279			`acpi_physical_address address,`
280			`u32 bit_width,`
281			`acpi_integer *value,`
282			`void *handler_context,`
283			`void *region_context)`
284			`{`
285			`acpi_status status = AE_OK;`
286			`u32 value32;`
287
288
289			`ACPI_FUNCTION_TRACE ("ex_system_io_space_handler");`
290
291
292			`ACPI_DEBUG_PRINT ((ACPI_DB_INFO,`
293			`"system_iO %d (%d width) Address=%8.8X%8.8X\n", function, bit_width,`
294			`ACPI_FORMAT_UINT64 (address)));`
295
296			`/* Decode the function parameter */`
297
298			`switch (function) {`
299			`case ACPI_READ:`
300
301			`status = acpi_os_read_port ((acpi_io_address) address, &value32, bit_width);`
302			`*value = value32;`
303			`break;`
304
305			`case ACPI_WRITE:`
306
307			`status = acpi_os_write_port ((acpi_io_address) address, (u32) *value, bit_width);`
308			`break;`
309
310			`default:`
311			`status = AE_BAD_PARAMETER;`
312			`break;`
313			`}`
314
315			`return_ACPI_STATUS (status);`
316			`}`
317
318
319			`/*******************************************************************************`
320			`*`
321			`* FUNCTION: acpi_ex_pci_config_space_handler`
322			`*`
323			`* PARAMETERS: Function - Read or Write operation`
324			`* Address - Where in the space to read or write`
325			`* bit_width - Field width in bits (8, 16, or 32)`
326			`* Value - Pointer to in or out value`
327			`* handler_context - Pointer to Handler's context`
328			`* region_context - Pointer to context specific to the`
329			`* accessed region`
330			`*`
331			`* RETURN: Status`
332			`*`
333			`* DESCRIPTION: Handler for the PCI Config address space (Op Region)`
334			`*`
335			`******************************************************************************/`
336
337			`acpi_status`
338			`acpi_ex_pci_config_space_handler (`
339			`u32 function,`
340			`acpi_physical_address address,`
341			`u32 bit_width,`
342			`acpi_integer *value,`
343			`void *handler_context,`
344			`void *region_context)`
345			`{`
346			`acpi_status status = AE_OK;`
347			`struct acpi_pci_id *pci_id;`
348			`u16 pci_register;`
349
350
351			`ACPI_FUNCTION_TRACE ("ex_pci_config_space_handler");`
352
353
354			`/*`
355			`* The arguments to acpi_os(Read\|Write)pci_configuration are:`
356			`*`
357			`* pci_segment is the PCI bus segment range 0-31`
358			`* pci_bus is the PCI bus number range 0-255`
359			`* pci_device is the PCI device number range 0-31`
360			`* pci_function is the PCI device function number`
361			`* pci_register is the Config space register range 0-255 bytes`
362			`*`
363			`* Value - input value for write, output address for read`
364			`*`
365			`*/`
366			`pci_id = (struct acpi_pci_id *) region_context;`
367			`pci_register = (u16) (u32) address;`
368
369			`ACPI_DEBUG_PRINT ((ACPI_DB_INFO,`
370			`"pci_config %d (%d) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n",`
371			`function, bit_width, pci_id->segment, pci_id->bus, pci_id->device,`
372			`pci_id->function, pci_register));`
373
374			`switch (function) {`
375			`case ACPI_READ:`
376
377			`*value = 0;`
378			`status = acpi_os_read_pci_configuration (pci_id, pci_register, value, bit_width);`
379			`break;`
380
381			`case ACPI_WRITE:`
382
383			`status = acpi_os_write_pci_configuration (pci_id, pci_register, *value, bit_width);`
384			`break;`
385
386			`default:`
387
388			`status = AE_BAD_PARAMETER;`
389			`break;`
390			`}`
391
392			`return_ACPI_STATUS (status);`
393			`}`
394
395
396			`/*******************************************************************************`
397			`*`
398			`* FUNCTION: acpi_ex_cmos_space_handler`
399			`*`
400			`* PARAMETERS: Function - Read or Write operation`
401			`* Address - Where in the space to read or write`
402			`* bit_width - Field width in bits (8, 16, or 32)`
403			`* Value - Pointer to in or out value`
404			`* handler_context - Pointer to Handler's context`
405			`* region_context - Pointer to context specific to the`
406			`* accessed region`
407			`*`
408			`* RETURN: Status`
409			`*`
410			`* DESCRIPTION: Handler for the CMOS address space (Op Region)`
411			`*`
412			`******************************************************************************/`
413
414			`acpi_status`
415			`acpi_ex_cmos_space_handler (`
416			`u32 function,`
417			`acpi_physical_address address,`
418			`u32 bit_width,`
419			`acpi_integer *value,`
420			`void *handler_context,`
421			`void *region_context)`
422			`{`
423			`acpi_status status = AE_OK;`
424
425
426			`ACPI_FUNCTION_TRACE ("ex_cmos_space_handler");`
427
428
429			`return_ACPI_STATUS (status);`
430			`}`
431
432
433			`/*******************************************************************************`
434			`*`
435			`* FUNCTION: acpi_ex_pci_bar_space_handler`
436			`*`
437			`* PARAMETERS: Function - Read or Write operation`
438			`* Address - Where in the space to read or write`
439			`* bit_width - Field width in bits (8, 16, or 32)`
440			`* Value - Pointer to in or out value`
441			`* handler_context - Pointer to Handler's context`
442			`* region_context - Pointer to context specific to the`
443			`* accessed region`
444			`*`
445			`* RETURN: Status`
446			`*`
447			`* DESCRIPTION: Handler for the PCI bar_target address space (Op Region)`
448			`*`
449			`******************************************************************************/`
450
451			`acpi_status`
452			`acpi_ex_pci_bar_space_handler (`
453			`u32 function,`
454			`acpi_physical_address address,`
455			`u32 bit_width,`
456			`acpi_integer *value,`
457			`void *handler_context,`
458			`void *region_context)`
459			`{`
460			`acpi_status status = AE_OK;`
461
462
463			`ACPI_FUNCTION_TRACE ("ex_pci_bar_space_handler");`
464
465
466			`return_ACPI_STATUS (status);`
467			`}`
468
469
470			`/*******************************************************************************`
471			`*`
472			`* FUNCTION: acpi_ex_data_table_space_handler`
473			`*`
474			`* PARAMETERS: Function - Read or Write operation`
475			`* Address - Where in the space to read or write`
476			`* bit_width - Field width in bits (8, 16, or 32)`
477			`* Value - Pointer to in or out value`
478			`* handler_context - Pointer to Handler's context`
479			`* region_context - Pointer to context specific to the`
480			`* accessed region`
481			`*`
482			`* RETURN: Status`
483			`*`
484			`* DESCRIPTION: Handler for the Data Table address space (Op Region)`
485			`*`
486			`******************************************************************************/`
487
488			`acpi_status`
489			`acpi_ex_data_table_space_handler (`
490			`u32 function,`
491			`acpi_physical_address address,`
492			`u32 bit_width,`
493			`acpi_integer *value,`
494			`void *handler_context,`
495			`void *region_context)`
496			`{`
497			`acpi_status status = AE_OK;`
498			`u32 byte_width = ACPI_DIV_8 (bit_width);`
499			`u32 i;`
500			`char *logical_addr_ptr;`
501
502
503			`ACPI_FUNCTION_TRACE ("ex_data_table_space_handler");`
504
505
506			`logical_addr_ptr = ACPI_PHYSADDR_TO_PTR (address);`
507
508
509			`/* Perform the memory read or write */`
510
511			`switch (function) {`
512			`case ACPI_READ:`
513
514			`for (i = 0; i < byte_width; i++) {`
515			`((char *) value) [i] = logical_addr_ptr[i];`
516			`}`
517			`break;`
518
519			`case ACPI_WRITE:`
520			`default:`
521
522			`return_ACPI_STATUS (AE_SUPPORT);`
523			`}`
524
525			`return_ACPI_STATUS (status);`
526			`}`
527
528