[PATCH v4 07/13] hw/riscv/virt-acpi-build.c: Add APLIC in the MADT

[Sunil V L <sunilvl@ventanamicro.com>]

Add APLIC structures for each socket in the MADT when system is configured
with APLIC as the external wired interrupt controller.

Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
---
 hw/riscv/virt-acpi-build.c | 36 ++++++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/hw/riscv/virt-acpi-build.c b/hw/riscv/virt-acpi-build.c
index 7f1a370e54..8fa358d034 100644
--- a/hw/riscv/virt-acpi-build.c
+++ b/hw/riscv/virt-acpi-build.c
@@ -277,9 +277,9 @@ static void build_madt(GArray *table_data,
     MachineClass *mc = MACHINE_GET_CLASS(s);
     MachineState *ms = MACHINE(s);
     const CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(ms);
-    uint64_t imsic_socket_addr, imsic_addr;
+    uint64_t imsic_socket_addr, imsic_addr, aplic_addr;
+    uint32_t imsic_size, gsi_base;
     uint8_t  guest_index_bits;
-    uint32_t imsic_size;
     uint32_t local_cpu_id, socket_id;
     uint8_t  hart_index_bits, group_index_bits, group_index_shift;
     uint16_t imsic_max_hart_per_socket = 0;
@@ -341,6 +341,38 @@ static void build_madt(GArray *table_data,
         build_append_int_noprefix(table_data, group_index_shift, 1);
     }
 
+    if (s->aia_type != VIRT_AIA_TYPE_NONE) {
+        /* APLICs */
+        for (socket = 0; socket < riscv_socket_count(ms); socket++) {
+            aplic_addr = s->memmap[VIRT_APLIC_S].base +
+                             s->memmap[VIRT_APLIC_S].size * socket;
+            gsi_base = VIRT_IRQCHIP_NUM_SOURCES * socket;
+            build_append_int_noprefix(table_data, 0x1A, 1);    /* Type */
+            build_append_int_noprefix(table_data, 36, 1);      /* Length */
+            build_append_int_noprefix(table_data, 1, 1);       /* Version */
+            build_append_int_noprefix(table_data, socket, 1);  /* APLIC ID */
+            build_append_int_noprefix(table_data, 0, 4);       /* Flags */
+            build_append_int_noprefix(table_data, 0, 8);       /* Hardware ID */
+            /* Number of IDCs */
+            if (s->aia_type == VIRT_AIA_TYPE_APLIC) {
+                build_append_int_noprefix(table_data,
+                                          s->soc[socket].num_harts,
+                                          2);
+            } else {
+                build_append_int_noprefix(table_data, 0, 2);
+            }
+            /* Total External Interrupt Sources Supported */
+            build_append_int_noprefix(table_data, VIRT_IRQCHIP_NUM_SOURCES, 2);
+            /* Global System Interrupt Base */
+            build_append_int_noprefix(table_data, gsi_base, 4);
+            /* APLIC Address */
+            build_append_int_noprefix(table_data, aplic_addr, 8);
+            /* APLIC size */
+            build_append_int_noprefix(table_data,
+                                      s->memmap[VIRT_APLIC_S].size, 4);
+        }
+    }
+
     acpi_table_end(linker, &table);
 }
 
-- 
2.39.2