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[3/6] hw/ppc/pnv_xscom: Do not use SysBus API to map local MMIO region

Message ID 20231018133059.85765-4-philmd@linaro.org
State Superseded
Headers show
Series hw/ppc: SysBus simplifications | expand

Commit Message

Philippe Mathieu-Daudé Oct. 18, 2023, 1:30 p.m. UTC 
There is no point in exposing an internal MMIO region via
SysBus and directly mapping it in the very same device.

Just map it without using the SysBus API.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/ppc/pnv_xscom.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

Comments

Thomas Huth Oct. 19, 2023, 5:43 a.m. UTC | #1 
On 18/10/2023 15.30, Philippe Mathieu-Daudé wrote:
> There is no point in exposing an internal MMIO region via
> SysBus and directly mapping it in the very same device.
> 
> Just map it without using the SysBus API.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>   hw/ppc/pnv_xscom.c | 4 +---
>   1 file changed, 1 insertion(+), 3 deletions(-)

Reviewed-by: Thomas Huth <thuth@redhat.com>
diff mbox series

Patch

diff --git a/hw/ppc/pnv_xscom.c b/hw/ppc/pnv_xscom.c
index cf892c9fe8..805b1d0c87 100644
--- a/hw/ppc/pnv_xscom.c
+++ b/hw/ppc/pnv_xscom.c
@@ -223,14 +223,12 @@  const MemoryRegionOps pnv_xscom_ops = {
 
 void pnv_xscom_init(PnvChip *chip, uint64_t size, hwaddr addr)
 {
-    SysBusDevice *sbd = SYS_BUS_DEVICE(chip);
     char *name;
 
     name = g_strdup_printf("xscom-%x", chip->chip_id);
     memory_region_init_io(&chip->xscom_mmio, OBJECT(chip), &pnv_xscom_ops,
                           chip, name, size);
-    sysbus_init_mmio(sbd, &chip->xscom_mmio);
-    sysbus_mmio_map(sbd, 0, addr);
+    memory_region_add_subregion(get_system_memory(), addr, &chip->xscom_mmio);
 
     memory_region_init(&chip->xscom, OBJECT(chip), name, size);
     address_space_init(&chip->xscom_as, &chip->xscom, name);