From: Shannon Zhao <shannon.z...@linaro.org>
Add aml_interrupt() for describing device interrupt in resource template.
These can be used to generating DSDT table for ACPI on ARM.
Signed-off-by: Shannon Zhao <zhaoshengl...@huawei.com>
Signed-off-by: Shannon Zhao <shannon.z...@linaro.org>
---
hw/acpi/aml-build.c | 18 ++++++++++++++++++
include/hw/acpi/aml-build.h | 1 +
2 files changed, 19 insertions(+)
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index fefe7c7..bd1713c 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -527,6 +527,24 @@ Aml *aml_memory32_fixed(uint64_t addr, uint64_t size,
uint8_t rw_flag)
return var;
}
+/*
+ * ACPI 1.0: 6.4.3.6 Interrupt (Interrupt Resource Descriptor Macro)
+ */
+Aml *aml_interrupt(uint8_t irq_flags, int irq)
+{
+ Aml *var = aml_alloc();
+ build_append_byte(var->buf, 0x89); /* Extended irq descriptor */
+ build_append_byte(var->buf, 6); /* Length, bits[7:0] minimum value = 6 */
+ build_append_byte(var->buf, 0); /* Length, bits[15:8] minimum value = 0 */
+ build_append_byte(var->buf, irq_flags); /* Interrupt Vector Information. */
+ build_append_byte(var->buf, 0x01); /* Interrupt table length = 1 */
+ build_append_byte(var->buf, irq & 0xff); /* Interrupt Number bits[7:0] */
+ build_append_byte(var->buf, (irq >> 8) & 0xff); /* Interrupt Number
bits[15:8] */
+ build_append_byte(var->buf, (irq >> 16) & 0xff); /* Interrupt Number
bits[23:16] */
+ build_append_byte(var->buf, (irq >> 24) & 0xff); /* Interrupt Number
bits[31:24] */
+ return var;
+}
+
/* ACPI 1.0b: 6.4.2.5 I/O Port Descriptor */
Aml *aml_io(AmlIODecode dec, uint16_t min_base, uint16_t max_base,
uint8_t aln, uint8_t len)
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index baa0652..315c729 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -163,6 +163,7 @@ Aml *aml_call2(const char *method, Aml *arg1, Aml *arg2);
Aml *aml_call3(const char *method, Aml *arg1, Aml *arg2, Aml *arg3);
Aml *aml_call4(const char *method, Aml *arg1, Aml *arg2, Aml *arg3, Aml *arg4);
Aml *aml_memory32_fixed(uint64_t addr, uint64_t size, uint8_t rw_flag);
+Aml *aml_interrupt(uint8_t irq_flags, int irq);
Aml *aml_io(AmlIODecode dec, uint16_t min_base, uint16_t max_base,
uint8_t aln, uint8_t len);
Aml *aml_operation_region(const char *name, AmlRegionSpace rs,
--
2.0.4
