1 files changed, 271 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/rsirq.c b/drivers/acpi/acpica/rsirq.c
new file mode 100644
index 0000000000..b0d970efa0
--- /dev/null
+++ b/drivers/acpi/acpica/rsirq.c
@@ -0,0 +1,271 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/*******************************************************************************
+ *
+ * Module Name: rsirq - IRQ resource descriptors
+ *
+ ******************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acresrc.h"
+
+#define _COMPONENT          ACPI_RESOURCES
+ACPI_MODULE_NAME("rsirq")
+
+/*******************************************************************************
+ *
+ * acpi_rs_get_irq
+ *
+ ******************************************************************************/
+struct acpi_rsconvert_info acpi_rs_get_irq[9] = {
+	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_IRQ,
+	 ACPI_RS_SIZE(struct acpi_resource_irq),
+	 ACPI_RSC_TABLE_SIZE(acpi_rs_get_irq)},
+
+	/* Get the IRQ mask (bytes 1:2) */
+
+	{ACPI_RSC_BITMASK16, ACPI_RS_OFFSET(data.irq.interrupts[0]),
+	 AML_OFFSET(irq.irq_mask),
+	 ACPI_RS_OFFSET(data.irq.interrupt_count)},
+
+	/* Set default flags (others are zero) */
+
+	{ACPI_RSC_SET8, ACPI_RS_OFFSET(data.irq.triggering),
+	 ACPI_EDGE_SENSITIVE,
+	 1},
+
+	/* Get the descriptor length (2 or 3 for IRQ descriptor) */
+
+	{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.irq.descriptor_length),
+	 AML_OFFSET(irq.descriptor_type),
+	 0},
+
+	/* All done if no flag byte present in descriptor */
+
+	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_AML_LENGTH, 0, 3},
+
+	/* Get flags: Triggering[0], Polarity[3], Sharing[4], Wake[5] */
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.triggering),
+	 AML_OFFSET(irq.flags),
+	 0},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.polarity),
+	 AML_OFFSET(irq.flags),
+	 3},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.shareable),
+	 AML_OFFSET(irq.flags),
+	 4},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.wake_capable),
+	 AML_OFFSET(irq.flags),
+	 5}
+};
+
+/*******************************************************************************
+ *
+ * acpi_rs_set_irq
+ *
+ ******************************************************************************/
+
+struct acpi_rsconvert_info acpi_rs_set_irq[14] = {
+	/* Start with a default descriptor of length 3 */
+
+	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_IRQ,
+	 sizeof(struct aml_resource_irq),
+	 ACPI_RSC_TABLE_SIZE(acpi_rs_set_irq)},
+
+	/* Convert interrupt list to 16-bit IRQ bitmask */
+
+	{ACPI_RSC_BITMASK16, ACPI_RS_OFFSET(data.irq.interrupts[0]),
+	 AML_OFFSET(irq.irq_mask),
+	 ACPI_RS_OFFSET(data.irq.interrupt_count)},
+
+	/* Set flags: Triggering[0], Polarity[3], Sharing[4], Wake[5] */
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.triggering),
+	 AML_OFFSET(irq.flags),
+	 0},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.polarity),
+	 AML_OFFSET(irq.flags),
+	 3},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.shareable),
+	 AML_OFFSET(irq.flags),
+	 4},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.wake_capable),
+	 AML_OFFSET(irq.flags),
+	 5},
+
+	/*
+	 * All done if the output descriptor length is required to be 3
+	 * (i.e., optimization to 2 bytes cannot be attempted)
+	 */
+	{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
+	 ACPI_RS_OFFSET(data.irq.descriptor_length),
+	 3},
+
+	/* Set length to 2 bytes (no flags byte) */
+
+	{ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq_noflags)},
+
+	/*
+	 * All done if the output descriptor length is required to be 2.
+	 *
+	 * TBD: Perhaps we should check for error if input flags are not
+	 * compatible with a 2-byte descriptor.
+	 */
+	{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
+	 ACPI_RS_OFFSET(data.irq.descriptor_length),
+	 2},
+
+	/* Reset length to 3 bytes (descriptor with flags byte) */
+
+	{ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq)},
+
+	/*
+	 * Check if the flags byte is necessary. Not needed if the flags are:
+	 * ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_HIGH, ACPI_EXCLUSIVE
+	 */
+	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
+	 ACPI_RS_OFFSET(data.irq.triggering),
+	 ACPI_EDGE_SENSITIVE},
+
+	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
+	 ACPI_RS_OFFSET(data.irq.polarity),
+	 ACPI_ACTIVE_HIGH},
+
+	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
+	 ACPI_RS_OFFSET(data.irq.shareable),
+	 ACPI_EXCLUSIVE},
+
+	/* We can optimize to a 2-byte irq_no_flags() descriptor */
+
+	{ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq_noflags)}
+};
+
+/*******************************************************************************
+ *
+ * acpi_rs_convert_ext_irq
+ *
+ ******************************************************************************/
+
+struct acpi_rsconvert_info acpi_rs_convert_ext_irq[10] = {
+	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_EXTENDED_IRQ,
+	 ACPI_RS_SIZE(struct acpi_resource_extended_irq),
+	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_ext_irq)},
+
+	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_EXTENDED_IRQ,
+	 sizeof(struct aml_resource_extended_irq),
+	 0},
+
+	/*
+	 * Flags: Producer/Consumer[0], Triggering[1], Polarity[2],
+	 *        Sharing[3], Wake[4]
+	 */
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.producer_consumer),
+	 AML_OFFSET(extended_irq.flags),
+	 0},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.triggering),
+	 AML_OFFSET(extended_irq.flags),
+	 1},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.polarity),
+	 AML_OFFSET(extended_irq.flags),
+	 2},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.shareable),
+	 AML_OFFSET(extended_irq.flags),
+	 3},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.wake_capable),
+	 AML_OFFSET(extended_irq.flags),
+	 4},
+
+	/* IRQ Table length (Byte4) */
+
+	{ACPI_RSC_COUNT, ACPI_RS_OFFSET(data.extended_irq.interrupt_count),
+	 AML_OFFSET(extended_irq.interrupt_count),
+	 sizeof(u32)},
+
+	/* Copy every IRQ in the table, each is 32 bits */
+
+	{ACPI_RSC_MOVE32, ACPI_RS_OFFSET(data.extended_irq.interrupts[0]),
+	 AML_OFFSET(extended_irq.interrupts[0]),
+	 0},
+
+	/* Optional resource_source (Index and String) */
+
+	{ACPI_RSC_SOURCEX, ACPI_RS_OFFSET(data.extended_irq.resource_source),
+	 ACPI_RS_OFFSET(data.extended_irq.interrupts[0]),
+	 sizeof(struct aml_resource_extended_irq)}
+};
+
+/*******************************************************************************
+ *
+ * acpi_rs_convert_dma
+ *
+ ******************************************************************************/
+
+struct acpi_rsconvert_info acpi_rs_convert_dma[6] = {
+	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_DMA,
+	 ACPI_RS_SIZE(struct acpi_resource_dma),
+	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_dma)},
+
+	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_DMA,
+	 sizeof(struct aml_resource_dma),
+	 0},
+
+	/* Flags: transfer preference, bus mastering, channel speed */
+
+	{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.dma.transfer),
+	 AML_OFFSET(dma.flags),
+	 0},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.dma.bus_master),
+	 AML_OFFSET(dma.flags),
+	 2},
+
+	{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.dma.type),
+	 AML_OFFSET(dma.flags),
+	 5},
+
+	/* DMA channel mask bits */
+
+	{ACPI_RSC_BITMASK, ACPI_RS_OFFSET(data.dma.channels[0]),
+	 AML_OFFSET(dma.dma_channel_mask),
+	 ACPI_RS_OFFSET(data.dma.channel_count)}
+};
+
+/*******************************************************************************
+ *
+ * acpi_rs_convert_fixed_dma
+ *
+ ******************************************************************************/
+
+struct acpi_rsconvert_info acpi_rs_convert_fixed_dma[4] = {
+	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_FIXED_DMA,
+	 ACPI_RS_SIZE(struct acpi_resource_fixed_dma),
+	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_fixed_dma)},
+
+	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_FIXED_DMA,
+	 sizeof(struct aml_resource_fixed_dma),
+	 0},
+
+	/*
+	 * These fields are contiguous in both the source and destination:
+	 * request_lines
+	 * Channels
+	 */
+	{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.fixed_dma.request_lines),
+	 AML_OFFSET(fixed_dma.request_lines),
+	 2},
+
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.fixed_dma.width),
+	 AML_OFFSET(fixed_dma.width),
+	 1},
+};