drivers/acpi/resources/rsirq.c

   1 /*******************************************************************************
   2  *
   3  * Module Name: rsirq - IRQ resource descriptors
   4  *
   5  ******************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2007, R. Byron Moore
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions, and the following disclaimer,
  16  *    without modification.
  17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  18  *    substantially similar to the "NO WARRANTY" disclaimer below
  19  *    ("Disclaimer") and any redistribution must be conditioned upon
  20  *    including a substantially similar Disclaimer requirement for further
  21  *    binary redistribution.
  22  * 3. Neither the names of the above-listed copyright holders nor the names
  23  *    of any contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * Alternatively, this software may be distributed under the terms of the
  27  * GNU General Public License ("GPL") version 2 as published by the Free
  28  * Software Foundation.
  29  *
  30  * NO WARRANTY
  31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41  * POSSIBILITY OF SUCH DAMAGES.
  42  */
  43
  44 #include <acpi/acpi.h>
  45 #include <acpi/acresrc.h>
  46
  47 #define _COMPONENT          ACPI_RESOURCES
  48 ACPI_MODULE_NAME("rsirq")
  49
  50 /*******************************************************************************
  51  *
  52  * acpi_rs_get_irq
  53  *
  54  ******************************************************************************/
  55 struct acpi_rsconvert_info acpi_rs_get_irq[7] = {
  56         {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_IRQ,
  57          ACPI_RS_SIZE(struct acpi_resource_irq),
  58          ACPI_RSC_TABLE_SIZE(acpi_rs_get_irq)},
  59
  60         /* Get the IRQ mask (bytes 1:2) */
  61
  62         {ACPI_RSC_BITMASK16, ACPI_RS_OFFSET(data.irq.interrupts[0]),
  63          AML_OFFSET(irq.irq_mask),
  64          ACPI_RS_OFFSET(data.irq.interrupt_count)},
  65
  66         /* Set default flags (others are zero) */
  67
  68         {ACPI_RSC_SET8, ACPI_RS_OFFSET(data.irq.triggering),
  69          ACPI_EDGE_SENSITIVE,
  70          1},
  71
  72         /* All done if no flag byte present in descriptor */
  73
  74         {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_AML_LENGTH, 0, 3},
  75
  76         /* Get flags: Triggering[0], Polarity[3], Sharing[4] */
  77
  78         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.triggering),
  79          AML_OFFSET(irq.flags),
  80          0},
  81
  82         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.polarity),
  83          AML_OFFSET(irq.flags),
  84          3},
  85
  86         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.sharable),
  87          AML_OFFSET(irq.flags),
  88          4}
  89 };
  90
  91 /*******************************************************************************
  92  *
  93  * acpi_rs_set_irq
  94  *
  95  ******************************************************************************/
  96
  97 struct acpi_rsconvert_info acpi_rs_set_irq[9] = {
  98         {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_IRQ,
  99          sizeof(struct aml_resource_irq),
 100          ACPI_RSC_TABLE_SIZE(acpi_rs_set_irq)},
 101
 102         /* Convert interrupt list to 16-bit IRQ bitmask */
 103
 104         {ACPI_RSC_BITMASK16, ACPI_RS_OFFSET(data.irq.interrupts[0]),
 105          AML_OFFSET(irq.irq_mask),
 106          ACPI_RS_OFFSET(data.irq.interrupt_count)},
 107
 108         /* Set the flags byte by default */
 109
 110         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.triggering),
 111          AML_OFFSET(irq.flags),
 112          0},
 113
 114         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.polarity),
 115          AML_OFFSET(irq.flags),
 116          3},
 117
 118         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.sharable),
 119          AML_OFFSET(irq.flags),
 120          4},
 121         /*
 122          * Check if the flags byte is necessary. Not needed if the flags are:
 123          * ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_HIGH, ACPI_EXCLUSIVE
 124          */
 125         {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
 126          ACPI_RS_OFFSET(data.irq.triggering),
 127          ACPI_EDGE_SENSITIVE},
 128
 129         {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
 130          ACPI_RS_OFFSET(data.irq.polarity),
 131          ACPI_ACTIVE_HIGH},
 132
 133         {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
 134          ACPI_RS_OFFSET(data.irq.sharable),
 135          ACPI_EXCLUSIVE},
 136
 137         /* irq_no_flags() descriptor can be used */
 138
 139         {ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq_noflags)}
 140 };
 141
 142 /*******************************************************************************
 143  *
 144  * acpi_rs_convert_ext_irq
 145  *
 146  ******************************************************************************/
 147
 148 struct acpi_rsconvert_info acpi_rs_convert_ext_irq[9] = {
 149         {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_EXTENDED_IRQ,
 150          ACPI_RS_SIZE(struct acpi_resource_extended_irq),
 151          ACPI_RSC_TABLE_SIZE(acpi_rs_convert_ext_irq)},
 152
 153         {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_EXTENDED_IRQ,
 154          sizeof(struct aml_resource_extended_irq),
 155          0},
 156
 157         /* Flag bits */
 158
 159         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.producer_consumer),
 160          AML_OFFSET(extended_irq.flags),
 161          0},
 162
 163         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.triggering),
 164          AML_OFFSET(extended_irq.flags),
 165          1},
 166
 167         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.polarity),
 168          AML_OFFSET(extended_irq.flags),
 169          2},
 170
 171         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.sharable),
 172          AML_OFFSET(extended_irq.flags),
 173          3},
 174
 175         /* IRQ Table length (Byte4) */
 176
 177         {ACPI_RSC_COUNT, ACPI_RS_OFFSET(data.extended_irq.interrupt_count),
 178          AML_OFFSET(extended_irq.interrupt_count),
 179          sizeof(u32)}
 180         ,
 181
 182         /* Copy every IRQ in the table, each is 32 bits */
 183
 184         {ACPI_RSC_MOVE32, ACPI_RS_OFFSET(data.extended_irq.interrupts[0]),
 185          AML_OFFSET(extended_irq.interrupts[0]),
 186          0}
 187         ,
 188
 189         /* Optional resource_source (Index and String) */
 190
 191         {ACPI_RSC_SOURCEX, ACPI_RS_OFFSET(data.extended_irq.resource_source),
 192          ACPI_RS_OFFSET(data.extended_irq.interrupts[0]),
 193          sizeof(struct aml_resource_extended_irq)}
 194 };
 195
 196 /*******************************************************************************
 197  *
 198  * acpi_rs_convert_dma
 199  *
 200  ******************************************************************************/
 201
 202 struct acpi_rsconvert_info acpi_rs_convert_dma[6] = {
 203         {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_DMA,
 204          ACPI_RS_SIZE(struct acpi_resource_dma),
 205          ACPI_RSC_TABLE_SIZE(acpi_rs_convert_dma)},
 206
 207         {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_DMA,
 208          sizeof(struct aml_resource_dma),
 209          0},
 210
 211         /* Flags: transfer preference, bus mastering, channel speed */
 212
 213         {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.dma.transfer),
 214          AML_OFFSET(dma.flags),
 215          0},
 216
 217         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.dma.bus_master),
 218          AML_OFFSET(dma.flags),
 219          2},
 220
 221         {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.dma.type),
 222          AML_OFFSET(dma.flags),
 223          5},
 224
 225         /* DMA channel mask bits */
 226
 227         {ACPI_RSC_BITMASK, ACPI_RS_OFFSET(data.dma.channels[0]),
 228          AML_OFFSET(dma.dma_channel_mask),
 229          ACPI_RS_OFFSET(data.dma.channel_count)}
 230 };