Some sysbus devices have conditionnal mmio regions. This
happens for instance with the hw/acpi/ged device. In that case
it becomes difficult to predict which index a specific MMIO
region corresponds to when one needs to mmio map the region.
Introduce a new helper that takes the name of the region instead
of its index. If the region is not found this returns -1.
Otherwise it maps the corresponding index and returns this latter.
Signed-off-by: Eric Auger <eric.au...@redhat.com>
---
include/hw/sysbus.h | 1 +
hw/core/sysbus.c | 11 +++++++++++
2 files changed, 12 insertions(+)
diff --git a/include/hw/sysbus.h b/include/hw/sysbus.h
index 7dc88aaa27..18fde8a7b4 100644
--- a/include/hw/sysbus.h
+++ b/include/hw/sysbus.h
@@ -82,6 +82,7 @@ void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq
irq);
bool sysbus_is_irq_connected(SysBusDevice *dev, int n);
qemu_irq sysbus_get_connected_irq(SysBusDevice *dev, int n);
void sysbus_mmio_map(SysBusDevice *dev, int n, hwaddr addr);
+int sysbus_mmio_map_name(SysBusDevice *dev, const char*name, hwaddr addr);
void sysbus_mmio_map_overlap(SysBusDevice *dev, int n, hwaddr addr,
int priority);
diff --git a/hw/core/sysbus.c b/hw/core/sysbus.c
index 6eb4c0f15a..fe1abe589d 100644
--- a/hw/core/sysbus.c
+++ b/hw/core/sysbus.c
@@ -151,6 +151,17 @@ void sysbus_mmio_map(SysBusDevice *dev, int n, hwaddr addr)
sysbus_mmio_map_common(dev, n, addr, false, 0);
}
+int sysbus_mmio_map_name(SysBusDevice *dev, const char *name, hwaddr addr)
+{
+ for (int i = 0; i < dev->num_mmio; i++) {
+ if (!strcmp(dev->mmio[i].memory->name, name)) {
+ sysbus_mmio_map(dev, i, addr);
+ return i;
+ }
+ }
+ return -1;
+}
+
void sysbus_mmio_map_overlap(SysBusDevice *dev, int n, hwaddr addr,
int priority)
{
--
2.49.0
