From 7056045332b997a8cd298e3bf231ecf690accdf4 Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Fri, 20 Feb 2015 18:22:10 +0000 Subject: [PATCH] acpi: add acpi_irq_no_flags() term Signed-off-by: Igor Mammedov Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/acpi/aml-build.c | 21 +++++++++++++++++++++ include/hw/acpi/aml-build.h | 1 + 2 files changed, 22 insertions(+) diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c index d793775d93..60245e7ded 100644 --- a/hw/acpi/aml-build.c +++ b/hw/acpi/aml-build.c @@ -514,6 +514,27 @@ Aml *aml_io(AmlIODecode dec, uint16_t min_base, uint16_t max_base, return var; } +/* + * ACPI 1.0b: 6.4.2.1.1 ASL Macro for IRQ Descriptor + * + * More verbose description at: + * ACPI 5.0: 19.5.64 IRQNoFlags (Interrupt Resource Descriptor Macro) + * 6.4.2.1 IRQ Descriptor + */ +Aml *aml_irq_no_flags(uint8_t irq) +{ + uint16_t irq_mask; + Aml *var = aml_alloc(); + + assert(irq < 16); + build_append_byte(var->buf, 0x22); /* IRQ descriptor 2 byte form */ + + irq_mask = 1U << irq; + build_append_byte(var->buf, irq_mask & 0xFF); /* IRQ mask bits[7:0] */ + build_append_byte(var->buf, irq_mask >> 8); /* IRQ mask bits[15:8] */ + return var; +} + /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefLEqual */ Aml *aml_equal(Aml *arg1, Aml *arg2) { diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h index d2b2c354fa..11871970ca 100644 --- a/include/hw/acpi/aml-build.h +++ b/include/hw/acpi/aml-build.h @@ -146,6 +146,7 @@ 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, uint32_t offset, uint32_t len); +Aml *aml_irq_no_flags(uint8_t irq); Aml *aml_named_field(const char *name, unsigned length); Aml *aml_reserved_field(unsigned length); Aml *aml_local(int num);