[Qemu-devel] [PATCH v6 05/22] hw/acpi/aml-build: Add aml_interrupt() term

[Shannon Zhao]

From: Shannon Zhao <address@hidden>

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 <address@hidden>
Signed-off-by: Shannon Zhao <address@hidden>
---
 hw/acpi/aml-build.c         | 28 +++++++++++++++++++++++++
 include/hw/acpi/aml-build.h | 50 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 78 insertions(+)

diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 61407b7..babe4d6 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -532,6 +532,34 @@ Aml *aml_memory32_fixed(uint32_t addr, uint32_t size,
     return var;
 }
 
+/*
+ * ACPI 1.0: 6.4.3.6 Interrupt (Interrupt Resource Descriptor Macro)
+ */
+Aml *aml_interrupt(AmlConsumerAndProducer con_and_pro,
+                   AmlLevelAndEdge level_and_edge,
+                   AmlActiveHighAndLow high_and_low,
+                   AmlExclusiveAndShared exclusive_and_shared,
+                   AmlWakeCap wake_capable, uint32_t irq)
+{
+    Aml *var = aml_alloc();
+    uint8_t irq_flags = con_and_pro | (level_and_edge << 1)
+                        | (high_and_low << 2) | (exclusive_and_shared << 3)
+                        | (wake_capable << 4);
+
+    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)
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 154823b..5b60744 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -105,6 +105,51 @@ typedef enum {
     aml_ReadWrite = 1,
 } AmlReadAndWrite;
 
+/*
+ * ACPI 1.0b: Table 6-28 Extended Interrupt Descriptor Definition
+ * Interrupt Vector Flags Bits[0] Consumer/Producer
+ */
+typedef enum {
+    aml_consumer_producer = 0,
+    aml_consumer = 1,
+} AmlConsumerAndProducer;
+
+/*
+ * ACPI 1.0b: Table 6-28 Extended Interrupt Descriptor Definition
+ * _HE field definition
+ */
+typedef enum {
+    aml_level = 0,
+    aml_edge = 1,
+} AmlLevelAndEdge;
+
+/*
+ * ACPI 1.0b: Table 6-28 Extended Interrupt Descriptor Definition
+ * _LL field definition
+ */
+typedef enum {
+    aml_active_high = 0,
+    aml_active_low = 1,
+} AmlActiveHighAndLow;
+
+/*
+ * ACPI 1.0b: Table 6-28 Extended Interrupt Descriptor Definition
+ * _SHR field definition
+ */
+typedef enum {
+    aml_exclusive = 0,
+    aml_shared = 1,
+} AmlExclusiveAndShared;
+
+/*
+ * ACPI 5.1: Table 6-203 Extended Interrupt Descriptor Definition
+ * _WKC field definition
+ */
+typedef enum {
+    aml_not_wake_capable = 0,
+    aml_wake_capable = 1,
+} AmlWakeCap;
+
 typedef
 struct AcpiBuildTables {
     GArray *table_data;
@@ -164,6 +209,11 @@ 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(uint32_t addr, uint32_t size,
                         AmlReadAndWrite read_and_write);
+Aml *aml_interrupt(AmlConsumerAndProducer con_and_pro,
+                   AmlLevelAndEdge level_and_edge,
+                   AmlActiveHighAndLow high_and_low,
+                   AmlExclusiveAndShared exclusive_and_shared,
+                   AmlWakeCap wake_capable, uint32_t 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