[v8,07/13] hw/riscv/virt-acpi-build.c: Add APLIC in the MADT

Commit Message

Sunil V L Dec. 18, 2023, 3:02 p.m. UTC

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 <[e-mail]>
Reviewed-by: Daniel Henrique Barboza <[e-mail]>
Reviewed-by: Andrew Jones <[e-mail]>
Acked-by: Alistair Francis <[e-mail]>
Acked-by: Michael S. Tsirkin <[e-mail]>
---
 hw/riscv/virt-acpi-build.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

Patch

diff --git a/hw/riscv/virt-acpi-build.c b/hw/riscv/virt-acpi-build.c
index 6bb21014fd..ec49c8804b 100644
--- a/hw/riscv/virt-acpi-build.c
+++ b/hw/riscv/virt-acpi-build.c
@@ -274,6 +274,8 @@  static void build_madt(GArray *table_data,
     uint8_t  guest_index_bits = imsic_num_bits(s->aia_guests + 1);
     uint16_t imsic_max_hart_per_socket = 0;
     uint8_t  hart_index_bits;
+    uint64_t aplic_addr;
+    uint32_t gsi_base;
     uint8_t  socket;
 
     for (socket = 0; socket < riscv_socket_count(ms); socket++) {
@@ -319,6 +321,38 @@  static void build_madt(GArray *table_data,
         build_append_int_noprefix(table_data, IMSIC_MMIO_GROUP_MIN_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);
 }