hw/intc/aspeed: Support setting different memory size

According to the AST2700 datasheet, the INTC(CPU DIE) controller has 16KB
(0x4000) of register space, and the INTCIO (I/O DIE) controller has 1KB (0x400)
of register space.

Introduced a new class attribute "mem_size" to set different memory sizes for
the INTC models in AST2700.

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250307035945.3698802-2-jamin_lin@aspeedtech.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>

diff --git a/hw/intc/aspeed_intc.c b/hw/intc/aspeed_intc.c
index 126b711b9430a290e80b3c6dfd3092e9e1d51a64..033b574c1e24cd3e39d572226ab7a07b7ec4d0c6 100644 (file)
--- a/hw/intc/aspeed_intc.c
+++ b/hw/intc/aspeed_intc.c
@@ -302,10 +302,16 @@ static void aspeed_intc_realize(DeviceState *dev, Error **errp)
     AspeedINTCClass *aic = ASPEED_INTC_GET_CLASS(s);
     int i;
 
+    memory_region_init(&s->iomem_container, OBJECT(s),
+            TYPE_ASPEED_INTC ".container", aic->mem_size);
+
+    sysbus_init_mmio(sbd, &s->iomem_container);
+
     memory_region_init_io(&s->iomem, OBJECT(s), &aspeed_intc_ops, s,
                           TYPE_ASPEED_INTC ".regs", ASPEED_INTC_NR_REGS << 2);
 
-    sysbus_init_mmio(sbd, &s->iomem);
+    memory_region_add_subregion(&s->iomem_container, 0x0, &s->iomem);
+
     qdev_init_gpio_in(dev, aspeed_intc_set_irq, aic->num_ints);
 
     for (i = 0; i < aic->num_ints; i++) {
@@ -344,6 +350,7 @@ static void aspeed_2700_intc_class_init(ObjectClass *klass, void *data)
     dc->desc = "ASPEED 2700 INTC Controller";
     aic->num_lines = 32;
     aic->num_ints = 9;
+    aic->mem_size = 0x4000;
 }
 
 static const TypeInfo aspeed_2700_intc_info = {

diff --git a/include/hw/intc/aspeed_intc.h b/include/hw/intc/aspeed_intc.h
index 18cb43476cd71a4784f0124d48c72c87885cfee6..03324f05ab58968ff65d158df2d48285b5b4589a 100644 (file)
--- a/include/hw/intc/aspeed_intc.h
+++ b/include/hw/intc/aspeed_intc.h
@@ -25,6 +25,8 @@ struct AspeedINTCState {
 
     /*< public >*/
     MemoryRegion iomem;
+    MemoryRegion iomem_container;
+
     uint32_t regs[ASPEED_INTC_NR_REGS];
     OrIRQState orgates[ASPEED_INTC_NR_INTS];
     qemu_irq output_pins[ASPEED_INTC_NR_INTS];
@@ -39,6 +41,7 @@ struct AspeedINTCClass {
 
     uint32_t num_lines;
     uint32_t num_ints;
+    uint64_t mem_size;
 };
 
 #endif /* ASPEED_INTC_H */