drivers/acpi/resources/rsirq.c

   1 /*******************************************************************************
   2  *
   3  * Module Name: rsirq - IRQ resource descriptors
   4  *
   5  ******************************************************************************/
   6
   7 /******************************************************************************
   8  *
   9  * 1. Copyright Notice
  10  *
  11  * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
  12  * All rights reserved.
  13  *
  14  * 2. License
  15  *
  16  * 2.1. This is your license from Intel Corp. under its intellectual property
  17  * rights.  You may have additional license terms from the party that provided
  18  * you this software, covering your right to use that party's intellectual
  19  * property rights.
  20  *
  21  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
  22  * copy of the source code appearing in this file ("Covered Code") an
  23  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
  24  * base code distributed originally by Intel ("Original Intel Code") to copy,
  25  * make derivatives, distribute, use and display any portion of the Covered
  26  * Code in any form, with the right to sublicense such rights; and
  27  *
  28  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
  29  * license (with the right to sublicense), under only those claims of Intel
  30  * patents that are infringed by the Original Intel Code, to make, use, sell,
  31  * offer to sell, and import the Covered Code and derivative works thereof
  32  * solely to the minimum extent necessary to exercise the above copyright
  33  * license, and in no event shall the patent license extend to any additions
  34  * to or modifications of the Original Intel Code.  No other license or right
  35  * is granted directly or by implication, estoppel or otherwise;
  36  *
  37  * The above copyright and patent license is granted only if the following
  38  * conditions are met:
  39  *
  40  * 3. Conditions
  41  *
  42  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
  43  * Redistribution of source code of any substantial portion of the Covered
  44  * Code or modification with rights to further distribute source must include
  45  * the above Copyright Notice, the above License, this list of Conditions,
  46  * and the following Disclaimer and Export Compliance provision.  In addition,
  47  * Licensee must cause all Covered Code to which Licensee contributes to
  48  * contain a file documenting the changes Licensee made to create that Covered
  49  * Code and the date of any change.  Licensee must include in that file the
  50  * documentation of any changes made by any predecessor Licensee.  Licensee
  51  * must include a prominent statement that the modification is derived,
  52  * directly or indirectly, from Original Intel Code.
  53  *
  54  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
  55  * Redistribution of source code of any substantial portion of the Covered
  56  * Code or modification without rights to further distribute source must
  57  * include the following Disclaimer and Export Compliance provision in the
  58  * documentation and/or other materials provided with distribution.  In
  59  * addition, Licensee may not authorize further sublicense of source of any
  60  * portion of the Covered Code, and must include terms to the effect that the
  61  * license from Licensee to its licensee is limited to the intellectual
  62  * property embodied in the software Licensee provides to its licensee, and
  63  * not to intellectual property embodied in modifications its licensee may
  64  * make.
  65  *
  66  * 3.3. Redistribution of Executable. Redistribution in executable form of any
  67  * substantial portion of the Covered Code or modification must reproduce the
  68  * above Copyright Notice, and the following Disclaimer and Export Compliance
  69  * provision in the documentation and/or other materials provided with the
  70  * distribution.
  71  *
  72  * 3.4. Intel retains all right, title, and interest in and to the Original
  73  * Intel Code.
  74  *
  75  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
  76  * Intel shall be used in advertising or otherwise to promote the sale, use or
  77  * other dealings in products derived from or relating to the Covered Code
  78  * without prior written authorization from Intel.
  79  *
  80  * 4. Disclaimer and Export Compliance
  81  *
  82  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
  83  * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
  84  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
  85  * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
  86  * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
  87  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
  88  * PARTICULAR PURPOSE.
  89  *
  90  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
  91  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
  92  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
  93  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
  94  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
  95  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
  96  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
  97  * LIMITED REMEDY.
  98  *
  99  * 4.3. Licensee shall not export, either directly or indirectly, any of this
 100  * software or system incorporating such software without first obtaining any
 101  * required license or other approval from the U. S. Department of Commerce or
 102  * any other agency or department of the United States Government.  In the
 103  * event Licensee exports any such software from the United States or
 104  * re-exports any such software from a foreign destination, Licensee shall
 105  * ensure that the distribution and export/re-export of the software is in
 106  * compliance with all laws, regulations, orders, or other restrictions of the
 107  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
 108  * any of its subsidiaries will export/re-export any technical data, process,
 109  * software, or service, directly or indirectly, to any country for which the
 110  * United States government or any agency thereof requires an export license,
 111  * other governmental approval, or letter of assurance, without first obtaining
 112  * such license, approval or letter.
 113  *
 114  *****************************************************************************/
 115
 116 #define __RSIRQ_C__
 117
 118 #include "acpi.h"
 119 #include "accommon.h"
 120 #include "acresrc.h"
 121
 122 #define _COMPONENT          ACPI_RESOURCES
 123         ACPI_MODULE_NAME    ("rsirq")
 124
 125
 126 /*******************************************************************************
 127  *
 128  * AcpiRsGetIrq
 129  *
 130  ******************************************************************************/
 131
 132 ACPI_RSCONVERT_INFO     AcpiRsGetIrq[8] =
 133 {
 134     {ACPI_RSC_INITGET,  ACPI_RESOURCE_TYPE_IRQ,
 135                         ACPI_RS_SIZE (ACPI_RESOURCE_IRQ),
 136                         ACPI_RSC_TABLE_SIZE (AcpiRsGetIrq)},
 137
 138     /* Get the IRQ mask (bytes 1:2) */
 139
 140     {ACPI_RSC_BITMASK16,ACPI_RS_OFFSET (Data.Irq.Interrupts[0]),
 141                         AML_OFFSET (Irq.IrqMask),
 142                         ACPI_RS_OFFSET (Data.Irq.InterruptCount)},
 143
 144     /* Set default flags (others are zero) */
 145
 146     {ACPI_RSC_SET8,     ACPI_RS_OFFSET (Data.Irq.Triggering),
 147                         ACPI_EDGE_SENSITIVE,
 148                         1},
 149
 150     /* Get the descriptor length (2 or 3 for IRQ descriptor) */
 151
 152     {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET (Data.Irq.DescriptorLength),
 153                         AML_OFFSET (Irq.DescriptorType),
 154                         0},
 155
 156     /* All done if no flag byte present in descriptor */
 157
 158     {ACPI_RSC_EXIT_NE,  ACPI_RSC_COMPARE_AML_LENGTH, 0, 3},
 159
 160     /* Get flags: Triggering[0], Polarity[3], Sharing[4] */
 161
 162     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.Irq.Triggering),
 163                         AML_OFFSET (Irq.Flags),
 164                         0},
 165
 166     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.Irq.Polarity),
 167                         AML_OFFSET (Irq.Flags),
 168                         3},
 169
 170     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.Irq.Sharable),
 171                         AML_OFFSET (Irq.Flags),
 172                         4}
 173 };
 174
 175
 176 /*******************************************************************************
 177  *
 178  * AcpiRsSetIrq
 179  *
 180  ******************************************************************************/
 181
 182 ACPI_RSCONVERT_INFO     AcpiRsSetIrq[13] =
 183 {
 184     /* Start with a default descriptor of length 3 */
 185
 186     {ACPI_RSC_INITSET,  ACPI_RESOURCE_NAME_IRQ,
 187                         sizeof (AML_RESOURCE_IRQ),
 188                         ACPI_RSC_TABLE_SIZE (AcpiRsSetIrq)},
 189
 190     /* Convert interrupt list to 16-bit IRQ bitmask */
 191
 192     {ACPI_RSC_BITMASK16,ACPI_RS_OFFSET (Data.Irq.Interrupts[0]),
 193                         AML_OFFSET (Irq.IrqMask),
 194                         ACPI_RS_OFFSET (Data.Irq.InterruptCount)},
 195
 196     /* Set the flags byte */
 197
 198     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.Irq.Triggering),
 199                         AML_OFFSET (Irq.Flags),
 200                         0},
 201
 202     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.Irq.Polarity),
 203                         AML_OFFSET (Irq.Flags),
 204                         3},
 205
 206     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.Irq.Sharable),
 207                         AML_OFFSET (Irq.Flags),
 208                         4},
 209
 210     /*
 211      * All done if the output descriptor length is required to be 3
 212      * (i.e., optimization to 2 bytes cannot be attempted)
 213      */
 214     {ACPI_RSC_EXIT_EQ,  ACPI_RSC_COMPARE_VALUE,
 215                         ACPI_RS_OFFSET(Data.Irq.DescriptorLength),
 216                         3},
 217
 218     /* Set length to 2 bytes (no flags byte) */
 219
 220     {ACPI_RSC_LENGTH,   0, 0, sizeof (AML_RESOURCE_IRQ_NOFLAGS)},
 221
 222     /*
 223      * All done if the output descriptor length is required to be 2.
 224      *
 225      * TBD: Perhaps we should check for error if input flags are not
 226      * compatible with a 2-byte descriptor.
 227      */
 228     {ACPI_RSC_EXIT_EQ,  ACPI_RSC_COMPARE_VALUE,
 229                         ACPI_RS_OFFSET(Data.Irq.DescriptorLength),
 230                         2},
 231
 232     /* Reset length to 3 bytes (descriptor with flags byte) */
 233
 234     {ACPI_RSC_LENGTH,   0, 0, sizeof (AML_RESOURCE_IRQ)},
 235
 236     /*
 237      * Check if the flags byte is necessary. Not needed if the flags are:
 238      * ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_HIGH, ACPI_EXCLUSIVE
 239      */
 240     {ACPI_RSC_EXIT_NE,  ACPI_RSC_COMPARE_VALUE,
 241                         ACPI_RS_OFFSET (Data.Irq.Triggering),
 242                         ACPI_EDGE_SENSITIVE},
 243
 244     {ACPI_RSC_EXIT_NE,  ACPI_RSC_COMPARE_VALUE,
 245                         ACPI_RS_OFFSET (Data.Irq.Polarity),
 246                         ACPI_ACTIVE_HIGH},
 247
 248     {ACPI_RSC_EXIT_NE,  ACPI_RSC_COMPARE_VALUE,
 249                         ACPI_RS_OFFSET (Data.Irq.Sharable),
 250                         ACPI_EXCLUSIVE},
 251
 252     /* We can optimize to a 2-byte IrqNoFlags() descriptor */
 253
 254     {ACPI_RSC_LENGTH,   0, 0, sizeof (AML_RESOURCE_IRQ_NOFLAGS)}
 255 };
 256
 257
 258 /*******************************************************************************
 259  *
 260  * AcpiRsConvertExtIrq
 261  *
 262  ******************************************************************************/
 263
 264 ACPI_RSCONVERT_INFO     AcpiRsConvertExtIrq[9] =
 265 {
 266     {ACPI_RSC_INITGET,  ACPI_RESOURCE_TYPE_EXTENDED_IRQ,
 267                         ACPI_RS_SIZE (ACPI_RESOURCE_EXTENDED_IRQ),
 268                         ACPI_RSC_TABLE_SIZE (AcpiRsConvertExtIrq)},
 269
 270     {ACPI_RSC_INITSET,  ACPI_RESOURCE_NAME_EXTENDED_IRQ,
 271                         sizeof (AML_RESOURCE_EXTENDED_IRQ),
 272                         0},
 273
 274     /* Flag bits */
 275
 276     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.ExtendedIrq.ProducerConsumer),
 277                         AML_OFFSET (ExtendedIrq.Flags),
 278                         0},
 279
 280     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.ExtendedIrq.Triggering),
 281                         AML_OFFSET (ExtendedIrq.Flags),
 282                         1},
 283
 284     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.ExtendedIrq.Polarity),
 285                         AML_OFFSET (ExtendedIrq.Flags),
 286                         2},
 287
 288     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.ExtendedIrq.Sharable),
 289                         AML_OFFSET (ExtendedIrq.Flags),
 290                         3},
 291
 292     /* IRQ Table length (Byte4) */
 293
 294     {ACPI_RSC_COUNT,    ACPI_RS_OFFSET (Data.ExtendedIrq.InterruptCount),
 295                         AML_OFFSET (ExtendedIrq.InterruptCount),
 296                         sizeof (UINT32)},
 297
 298     /* Copy every IRQ in the table, each is 32 bits */
 299
 300     {ACPI_RSC_MOVE32,   ACPI_RS_OFFSET (Data.ExtendedIrq.Interrupts[0]),
 301                         AML_OFFSET (ExtendedIrq.Interrupts[0]),
 302                         0},
 303
 304     /* Optional ResourceSource (Index and String) */
 305
 306     {ACPI_RSC_SOURCEX,  ACPI_RS_OFFSET (Data.ExtendedIrq.ResourceSource),
 307                         ACPI_RS_OFFSET (Data.ExtendedIrq.Interrupts[0]),
 308                         sizeof (AML_RESOURCE_EXTENDED_IRQ)}
 309 };
 310
 311
 312 /*******************************************************************************
 313  *
 314  * AcpiRsConvertDma
 315  *
 316  ******************************************************************************/
 317
 318 ACPI_RSCONVERT_INFO     AcpiRsConvertDma[6] =
 319 {
 320     {ACPI_RSC_INITGET,  ACPI_RESOURCE_TYPE_DMA,
 321                         ACPI_RS_SIZE (ACPI_RESOURCE_DMA),
 322                         ACPI_RSC_TABLE_SIZE (AcpiRsConvertDma)},
 323
 324     {ACPI_RSC_INITSET,  ACPI_RESOURCE_NAME_DMA,
 325                         sizeof (AML_RESOURCE_DMA),
 326                         0},
 327
 328     /* Flags: transfer preference, bus mastering, channel speed */
 329
 330     {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET (Data.Dma.Transfer),
 331                         AML_OFFSET (Dma.Flags),
 332                         0},
 333
 334     {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.Dma.BusMaster),
 335                         AML_OFFSET (Dma.Flags),
 336                         2},
 337
 338     {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET (Data.Dma.Type),
 339                         AML_OFFSET (Dma.Flags),
 340                         5},
 341
 342     /* DMA channel mask bits */
 343
 344     {ACPI_RSC_BITMASK,  ACPI_RS_OFFSET (Data.Dma.Channels[0]),
 345                         AML_OFFSET (Dma.DmaChannelMask),
 346                         ACPI_RS_OFFSET (Data.Dma.ChannelCount)}
 347 };
 348