266 lines
8.0 KiB
C
266 lines
8.0 KiB
C
/*******************************************************************************
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*
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* Module Name: rsirq - IRQ resource descriptors
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*
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******************************************************************************/
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/*
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* Copyright (C) 2000 - 2008, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include <acpi/acresrc.h>
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#define _COMPONENT ACPI_RESOURCES
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ACPI_MODULE_NAME("rsirq")
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/*******************************************************************************
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*
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* acpi_rs_get_irq
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*
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******************************************************************************/
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struct acpi_rsconvert_info acpi_rs_get_irq[8] = {
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{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_IRQ,
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ACPI_RS_SIZE(struct acpi_resource_irq),
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ACPI_RSC_TABLE_SIZE(acpi_rs_get_irq)},
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/* Get the IRQ mask (bytes 1:2) */
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{ACPI_RSC_BITMASK16, ACPI_RS_OFFSET(data.irq.interrupts[0]),
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AML_OFFSET(irq.irq_mask),
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ACPI_RS_OFFSET(data.irq.interrupt_count)},
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/* Set default flags (others are zero) */
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{ACPI_RSC_SET8, ACPI_RS_OFFSET(data.irq.triggering),
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ACPI_EDGE_SENSITIVE,
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1},
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/* Get the descriptor length (2 or 3 for IRQ descriptor) */
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{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.irq.descriptor_length),
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AML_OFFSET(irq.descriptor_type),
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0},
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/* All done if no flag byte present in descriptor */
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{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_AML_LENGTH, 0, 3},
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/* Get flags: Triggering[0], Polarity[3], Sharing[4] */
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{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.triggering),
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AML_OFFSET(irq.flags),
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0},
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{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.polarity),
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AML_OFFSET(irq.flags),
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3},
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{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.sharable),
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AML_OFFSET(irq.flags),
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4}
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};
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/*******************************************************************************
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*
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* acpi_rs_set_irq
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*
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******************************************************************************/
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struct acpi_rsconvert_info acpi_rs_set_irq[13] = {
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/* Start with a default descriptor of length 3 */
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{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_IRQ,
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sizeof(struct aml_resource_irq),
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ACPI_RSC_TABLE_SIZE(acpi_rs_set_irq)},
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/* Convert interrupt list to 16-bit IRQ bitmask */
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{ACPI_RSC_BITMASK16, ACPI_RS_OFFSET(data.irq.interrupts[0]),
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AML_OFFSET(irq.irq_mask),
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ACPI_RS_OFFSET(data.irq.interrupt_count)},
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/* Set the flags byte */
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{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.triggering),
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AML_OFFSET(irq.flags),
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0},
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{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.polarity),
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AML_OFFSET(irq.flags),
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3},
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{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.sharable),
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AML_OFFSET(irq.flags),
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4},
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/*
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* All done if the output descriptor length is required to be 3
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* (i.e., optimization to 2 bytes cannot be attempted)
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*/
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{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
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ACPI_RS_OFFSET(data.irq.descriptor_length),
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3},
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/* Set length to 2 bytes (no flags byte) */
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{ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq_noflags)},
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/*
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* All done if the output descriptor length is required to be 2.
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*
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* TBD: Perhaps we should check for error if input flags are not
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* compatible with a 2-byte descriptor.
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*/
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{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
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ACPI_RS_OFFSET(data.irq.descriptor_length),
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2},
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/* Reset length to 3 bytes (descriptor with flags byte) */
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{ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq)},
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/*
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* Check if the flags byte is necessary. Not needed if the flags are:
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* ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_HIGH, ACPI_EXCLUSIVE
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*/
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{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
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ACPI_RS_OFFSET(data.irq.triggering),
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ACPI_EDGE_SENSITIVE},
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{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
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ACPI_RS_OFFSET(data.irq.polarity),
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ACPI_ACTIVE_HIGH},
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{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
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ACPI_RS_OFFSET(data.irq.sharable),
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ACPI_EXCLUSIVE},
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/* We can optimize to a 2-byte irq_no_flags() descriptor */
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{ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq_noflags)}
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};
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/*******************************************************************************
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*
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* acpi_rs_convert_ext_irq
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*
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******************************************************************************/
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struct acpi_rsconvert_info acpi_rs_convert_ext_irq[9] = {
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{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_EXTENDED_IRQ,
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ACPI_RS_SIZE(struct acpi_resource_extended_irq),
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ACPI_RSC_TABLE_SIZE(acpi_rs_convert_ext_irq)},
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{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_EXTENDED_IRQ,
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sizeof(struct aml_resource_extended_irq),
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0},
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/* Flag bits */
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{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.producer_consumer),
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AML_OFFSET(extended_irq.flags),
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0},
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{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.triggering),
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AML_OFFSET(extended_irq.flags),
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1},
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{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.polarity),
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AML_OFFSET(extended_irq.flags),
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2},
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{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.sharable),
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AML_OFFSET(extended_irq.flags),
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3},
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/* IRQ Table length (Byte4) */
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{ACPI_RSC_COUNT, ACPI_RS_OFFSET(data.extended_irq.interrupt_count),
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AML_OFFSET(extended_irq.interrupt_count),
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sizeof(u32)}
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,
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/* Copy every IRQ in the table, each is 32 bits */
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{ACPI_RSC_MOVE32, ACPI_RS_OFFSET(data.extended_irq.interrupts[0]),
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AML_OFFSET(extended_irq.interrupts[0]),
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0}
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,
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/* Optional resource_source (Index and String) */
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{ACPI_RSC_SOURCEX, ACPI_RS_OFFSET(data.extended_irq.resource_source),
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ACPI_RS_OFFSET(data.extended_irq.interrupts[0]),
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sizeof(struct aml_resource_extended_irq)}
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};
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/*******************************************************************************
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*
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* acpi_rs_convert_dma
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*
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******************************************************************************/
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struct acpi_rsconvert_info acpi_rs_convert_dma[6] = {
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{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_DMA,
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ACPI_RS_SIZE(struct acpi_resource_dma),
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ACPI_RSC_TABLE_SIZE(acpi_rs_convert_dma)},
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{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_DMA,
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sizeof(struct aml_resource_dma),
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0},
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/* Flags: transfer preference, bus mastering, channel speed */
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{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.dma.transfer),
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AML_OFFSET(dma.flags),
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0},
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{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.dma.bus_master),
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AML_OFFSET(dma.flags),
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2},
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{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.dma.type),
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AML_OFFSET(dma.flags),
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5},
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/* DMA channel mask bits */
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{ACPI_RSC_BITMASK, ACPI_RS_OFFSET(data.dma.channels[0]),
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AML_OFFSET(dma.dma_channel_mask),
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ACPI_RS_OFFSET(data.dma.channel_count)}
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};
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