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Warning, cross-references for /kernel/drivers/acpica/rsirq.c need to be fixed.

0001 /*******************************************************************************
0002  *
0003  * Module Name: rsirq - IRQ resource descriptors
0004  *
0005  ******************************************************************************/
0006 
0007 /******************************************************************************
0008  *
0009  * 1. Copyright Notice
0010  *
0011  * Some or all of this work - Copyright (c) 1999 - 2009, Intel Corp.
0012  * All rights reserved.
0013  *
0014  * 2. License
0015  *
0016  * 2.1. This is your license from Intel Corp. under its intellectual property
0017  * rights.  You may have additional license terms from the party that provided
0018  * you this software, covering your right to use that party's intellectual
0019  * property rights.
0020  *
0021  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
0022  * copy of the source code appearing in this file ("Covered Code") an
0023  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
0024  * base code distributed originally by Intel ("Original Intel Code") to copy,
0025  * make derivatives, distribute, use and display any portion of the Covered
0026  * Code in any form, with the right to sublicense such rights; and
0027  *
0028  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
0029  * license (with the right to sublicense), under only those claims of Intel
0030  * patents that are infringed by the Original Intel Code, to make, use, sell,
0031  * offer to sell, and import the Covered Code and derivative works thereof
0032  * solely to the minimum extent necessary to exercise the above copyright
0033  * license, and in no event shall the patent license extend to any additions
0034  * to or modifications of the Original Intel Code.  No other license or right
0035  * is granted directly or by implication, estoppel or otherwise;
0036  *
0037  * The above copyright and patent license is granted only if the following
0038  * conditions are met:
0039  *
0040  * 3. Conditions
0041  *
0042  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
0043  * Redistribution of source code of any substantial portion of the Covered
0044  * Code or modification with rights to further distribute source must include
0045  * the above Copyright Notice, the above License, this list of Conditions,
0046  * and the following Disclaimer and Export Compliance provision.  In addition,
0047  * Licensee must cause all Covered Code to which Licensee contributes to
0048  * contain a file documenting the changes Licensee made to create that Covered
0049  * Code and the date of any change.  Licensee must include in that file the
0050  * documentation of any changes made by any predecessor Licensee.  Licensee
0051  * must include a prominent statement that the modification is derived,
0052  * directly or indirectly, from Original Intel Code.
0053  *
0054  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
0055  * Redistribution of source code of any substantial portion of the Covered
0056  * Code or modification without rights to further distribute source must
0057  * include the following Disclaimer and Export Compliance provision in the
0058  * documentation and/or other materials provided with distribution.  In
0059  * addition, Licensee may not authorize further sublicense of source of any
0060  * portion of the Covered Code, and must include terms to the effect that the
0061  * license from Licensee to its licensee is limited to the intellectual
0062  * property embodied in the software Licensee provides to its licensee, and
0063  * not to intellectual property embodied in modifications its licensee may
0064  * make.
0065  *
0066  * 3.3. Redistribution of Executable. Redistribution in executable form of any
0067  * substantial portion of the Covered Code or modification must reproduce the
0068  * above Copyright Notice, and the following Disclaimer and Export Compliance
0069  * provision in the documentation and/or other materials provided with the
0070  * distribution.
0071  *
0072  * 3.4. Intel retains all right, title, and interest in and to the Original
0073  * Intel Code.
0074  *
0075  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
0076  * Intel shall be used in advertising or otherwise to promote the sale, use or
0077  * other dealings in products derived from or relating to the Covered Code
0078  * without prior written authorization from Intel.
0079  *
0080  * 4. Disclaimer and Export Compliance
0081  *
0082  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
0083  * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
0084  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
0085  * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
0086  * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
0087  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
0088  * PARTICULAR PURPOSE.
0089  *
0090  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
0091  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
0092  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
0093  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
0094  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
0095  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
0096  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
0097  * LIMITED REMEDY.
0098  *
0099  * 4.3. Licensee shall not export, either directly or indirectly, any of this
0100  * software or system incorporating such software without first obtaining any
0101  * required license or other approval from the U. S. Department of Commerce or
0102  * any other agency or department of the United States Government.  In the
0103  * event Licensee exports any such software from the United States or
0104  * re-exports any such software from a foreign destination, Licensee shall
0105  * ensure that the distribution and export/re-export of the software is in
0106  * compliance with all laws, regulations, orders, or other restrictions of the
0107  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
0108  * any of its subsidiaries will export/re-export any technical data, process,
0109  * software, or service, directly or indirectly, to any country for which the
0110  * United States government or any agency thereof requires an export license,
0111  * other governmental approval, or letter of assurance, without first obtaining
0112  * such license, approval or letter.
0113  *
0114  *****************************************************************************/
0115 
0116 #define __RSIRQ_C__
0117 
0118 #include "acpi.h"
0119 #include "accommon.h"
0120 #include "acresrc.h"
0121 
0122 #define _COMPONENT          ACPI_RESOURCES
0123         ACPI_MODULE_NAME    ("rsirq")
0124 
0125 
0126 /*******************************************************************************
0127  *
0128  * AcpiRsGetIrq
0129  *
0130  ******************************************************************************/
0131 
0132 ACPI_RSCONVERT_INFO     AcpiRsGetIrq[8] =
0133 {
0134     {ACPI_RSC_INITGET,  ACPI_RESOURCE_TYPE_IRQ,
0135                         ACPI_RS_SIZE (ACPI_RESOURCE_IRQ),
0136                         ACPI_RSC_TABLE_SIZE (AcpiRsGetIrq)},
0137 
0138     /* Get the IRQ mask (bytes 1:2) */
0139 
0140     {ACPI_RSC_BITMASK16,ACPI_RS_OFFSET (Data.Irq.Interrupts[0]),
0141                         AML_OFFSET (Irq.IrqMask),
0142                         ACPI_RS_OFFSET (Data.Irq.InterruptCount)},
0143 
0144     /* Set default flags (others are zero) */
0145 
0146     {ACPI_RSC_SET8,     ACPI_RS_OFFSET (Data.Irq.Triggering),
0147                         ACPI_EDGE_SENSITIVE,
0148                         1},
0149 
0150     /* Get the descriptor length (2 or 3 for IRQ descriptor) */
0151 
0152     {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET (Data.Irq.DescriptorLength),
0153                         AML_OFFSET (Irq.DescriptorType),
0154                         0},
0155 
0156     /* All done if no flag byte present in descriptor */
0157 
0158     {ACPI_RSC_EXIT_NE,  ACPI_RSC_COMPARE_AML_LENGTH, 0, 3},
0159 
0160     /* Get flags: Triggering[0], Polarity[3], Sharing[4] */
0161 
0162     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.Irq.Triggering),
0163                         AML_OFFSET (Irq.Flags),
0164                         0},
0165 
0166     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.Irq.Polarity),
0167                         AML_OFFSET (Irq.Flags),
0168                         3},
0169 
0170     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.Irq.Sharable),
0171                         AML_OFFSET (Irq.Flags),
0172                         4}
0173 };
0174 
0175 
0176 /*******************************************************************************
0177  *
0178  * AcpiRsSetIrq
0179  *
0180  ******************************************************************************/
0181 
0182 ACPI_RSCONVERT_INFO     AcpiRsSetIrq[13] =
0183 {
0184     /* Start with a default descriptor of length 3 */
0185 
0186     {ACPI_RSC_INITSET,  ACPI_RESOURCE_NAME_IRQ,
0187                         sizeof (AML_RESOURCE_IRQ),
0188                         ACPI_RSC_TABLE_SIZE (AcpiRsSetIrq)},
0189 
0190     /* Convert interrupt list to 16-bit IRQ bitmask */
0191 
0192     {ACPI_RSC_BITMASK16,ACPI_RS_OFFSET (Data.Irq.Interrupts[0]),
0193                         AML_OFFSET (Irq.IrqMask),
0194                         ACPI_RS_OFFSET (Data.Irq.InterruptCount)},
0195 
0196     /* Set the flags byte */
0197 
0198     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.Irq.Triggering),
0199                         AML_OFFSET (Irq.Flags),
0200                         0},
0201 
0202     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.Irq.Polarity),
0203                         AML_OFFSET (Irq.Flags),
0204                         3},
0205 
0206     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.Irq.Sharable),
0207                         AML_OFFSET (Irq.Flags),
0208                         4},
0209 
0210     /*
0211      * All done if the output descriptor length is required to be 3
0212      * (i.e., optimization to 2 bytes cannot be attempted)
0213      */
0214     {ACPI_RSC_EXIT_EQ,  ACPI_RSC_COMPARE_VALUE,
0215                         ACPI_RS_OFFSET(Data.Irq.DescriptorLength),
0216                         3},
0217 
0218     /* Set length to 2 bytes (no flags byte) */
0219 
0220     {ACPI_RSC_LENGTH,   0, 0, sizeof (AML_RESOURCE_IRQ_NOFLAGS)},
0221 
0222     /*
0223      * All done if the output descriptor length is required to be 2.
0224      *
0225      * TBD: Perhaps we should check for error if input flags are not
0226      * compatible with a 2-byte descriptor.
0227      */
0228     {ACPI_RSC_EXIT_EQ,  ACPI_RSC_COMPARE_VALUE,
0229                         ACPI_RS_OFFSET(Data.Irq.DescriptorLength),
0230                         2},
0231 
0232     /* Reset length to 3 bytes (descriptor with flags byte) */
0233 
0234     {ACPI_RSC_LENGTH,   0, 0, sizeof (AML_RESOURCE_IRQ)},
0235 
0236     /*
0237      * Check if the flags byte is necessary. Not needed if the flags are:
0238      * ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_HIGH, ACPI_EXCLUSIVE
0239      */
0240     {ACPI_RSC_EXIT_NE,  ACPI_RSC_COMPARE_VALUE,
0241                         ACPI_RS_OFFSET (Data.Irq.Triggering),
0242                         ACPI_EDGE_SENSITIVE},
0243 
0244     {ACPI_RSC_EXIT_NE,  ACPI_RSC_COMPARE_VALUE,
0245                         ACPI_RS_OFFSET (Data.Irq.Polarity),
0246                         ACPI_ACTIVE_HIGH},
0247 
0248     {ACPI_RSC_EXIT_NE,  ACPI_RSC_COMPARE_VALUE,
0249                         ACPI_RS_OFFSET (Data.Irq.Sharable),
0250                         ACPI_EXCLUSIVE},
0251 
0252     /* We can optimize to a 2-byte IrqNoFlags() descriptor */
0253 
0254     {ACPI_RSC_LENGTH,   0, 0, sizeof (AML_RESOURCE_IRQ_NOFLAGS)}
0255 };
0256 
0257 
0258 /*******************************************************************************
0259  *
0260  * AcpiRsConvertExtIrq
0261  *
0262  ******************************************************************************/
0263 
0264 ACPI_RSCONVERT_INFO     AcpiRsConvertExtIrq[9] =
0265 {
0266     {ACPI_RSC_INITGET,  ACPI_RESOURCE_TYPE_EXTENDED_IRQ,
0267                         ACPI_RS_SIZE (ACPI_RESOURCE_EXTENDED_IRQ),
0268                         ACPI_RSC_TABLE_SIZE (AcpiRsConvertExtIrq)},
0269 
0270     {ACPI_RSC_INITSET,  ACPI_RESOURCE_NAME_EXTENDED_IRQ,
0271                         sizeof (AML_RESOURCE_EXTENDED_IRQ),
0272                         0},
0273 
0274     /* Flag bits */
0275 
0276     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.ExtendedIrq.ProducerConsumer),
0277                         AML_OFFSET (ExtendedIrq.Flags),
0278                         0},
0279 
0280     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.ExtendedIrq.Triggering),
0281                         AML_OFFSET (ExtendedIrq.Flags),
0282                         1},
0283 
0284     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.ExtendedIrq.Polarity),
0285                         AML_OFFSET (ExtendedIrq.Flags),
0286                         2},
0287 
0288     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.ExtendedIrq.Sharable),
0289                         AML_OFFSET (ExtendedIrq.Flags),
0290                         3},
0291 
0292     /* IRQ Table length (Byte4) */
0293 
0294     {ACPI_RSC_COUNT,    ACPI_RS_OFFSET (Data.ExtendedIrq.InterruptCount),
0295                         AML_OFFSET (ExtendedIrq.InterruptCount),
0296                         sizeof (UINT32)},
0297 
0298     /* Copy every IRQ in the table, each is 32 bits */
0299 
0300     {ACPI_RSC_MOVE32,   ACPI_RS_OFFSET (Data.ExtendedIrq.Interrupts[0]),
0301                         AML_OFFSET (ExtendedIrq.Interrupts[0]),
0302                         0},
0303 
0304     /* Optional ResourceSource (Index and String) */
0305 
0306     {ACPI_RSC_SOURCEX,  ACPI_RS_OFFSET (Data.ExtendedIrq.ResourceSource),
0307                         ACPI_RS_OFFSET (Data.ExtendedIrq.Interrupts[0]),
0308                         sizeof (AML_RESOURCE_EXTENDED_IRQ)}
0309 };
0310 
0311 
0312 /*******************************************************************************
0313  *
0314  * AcpiRsConvertDma
0315  *
0316  ******************************************************************************/
0317 
0318 ACPI_RSCONVERT_INFO     AcpiRsConvertDma[6] =
0319 {
0320     {ACPI_RSC_INITGET,  ACPI_RESOURCE_TYPE_DMA,
0321                         ACPI_RS_SIZE (ACPI_RESOURCE_DMA),
0322                         ACPI_RSC_TABLE_SIZE (AcpiRsConvertDma)},
0323 
0324     {ACPI_RSC_INITSET,  ACPI_RESOURCE_NAME_DMA,
0325                         sizeof (AML_RESOURCE_DMA),
0326                         0},
0327 
0328     /* Flags: transfer preference, bus mastering, channel speed */
0329 
0330     {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET (Data.Dma.Transfer),
0331                         AML_OFFSET (Dma.Flags),
0332                         0},
0333 
0334     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.Dma.BusMaster),
0335                         AML_OFFSET (Dma.Flags),
0336                         2},
0337 
0338     {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET (Data.Dma.Type),
0339                         AML_OFFSET (Dma.Flags),
0340                         5},
0341 
0342     /* DMA channel mask bits */
0343 
0344     {ACPI_RSC_BITMASK,  ACPI_RS_OFFSET (Data.Dma.Channels[0]),
0345                         AML_OFFSET (Dma.DmaChannelMask),
0346                         ACPI_RS_OFFSET (Data.Dma.ChannelCount)}
0347 };
0348