diff options
Diffstat (limited to 'hw/acpi/aml-build.c')
| -rw-r--r-- | hw/acpi/aml-build.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c index ad4d7ea212..0d9994146d 100644 --- a/hw/acpi/aml-build.c +++ b/hw/acpi/aml-build.c @@ -533,6 +533,33 @@ Aml *aml_memory32_fixed(uint32_t addr, uint32_t size, return var; } +/* + * ACPI 5.0: 6.4.3.6 Extended Interrupt Descriptor + * Type 1, Large Item Name 0x9 + */ +Aml *aml_interrupt(AmlConsumerAndProducer con_and_pro, + AmlLevelAndEdge level_and_edge, + AmlActiveHighAndLow high_and_low, AmlShared shared, + uint32_t irq) +{ + Aml *var = aml_alloc(); + uint8_t irq_flags = con_and_pro | (level_and_edge << 1) + | (high_and_low << 2) | (shared << 3); + + 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 */ + + /* Interrupt Number */ + build_append_byte(var->buf, extract32(irq, 0, 8)); /* bits[7:0] */ + build_append_byte(var->buf, extract32(irq, 8, 8)); /* bits[15:8] */ + build_append_byte(var->buf, extract32(irq, 16, 8)); /* bits[23:16] */ + build_append_byte(var->buf, extract32(irq, 24, 8)); /* 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) |