diff mbox series

[04/12] hw/misc/allwinner-dramc: Do not use SysBus API to map local MMIO region

Message ID 20231018141151.87466-5-philmd@linaro.org
State Superseded
Headers show
Series hw: Strengthen SysBus & QBus API | expand

Commit Message

Philippe Mathieu-Daudé Oct. 18, 2023, 2:11 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/misc/allwinner-r40-dramc.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/hw/misc/allwinner-r40-dramc.c b/hw/misc/allwinner-r40-dramc.c
index 2cc0254a55..3d81ddb2e1 100644
--- a/hw/misc/allwinner-r40-dramc.c
+++ b/hw/misc/allwinner-r40-dramc.c
@@ -414,7 +414,6 @@  static void allwinner_r40_dramc_reset(DeviceState *dev)
 static void allwinner_r40_dramc_realize(DeviceState *dev, Error **errp)
 {
     AwR40DramCtlState *s = AW_R40_DRAMC(dev);
-    SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
 
     if (!get_match_ddr(s->ram_size)) {
         error_report("%s: ram-size %u MiB is not supported",
@@ -422,23 +421,23 @@  static void allwinner_r40_dramc_realize(DeviceState *dev, Error **errp)
         exit(1);
     }
 
-    /* R40 support max 2G memory but we only support up to 1G now. index 3 */
+    /* R40 support max 2G memory but we only support up to 1G now. */
     memory_region_init_io(&s->detect_cells, OBJECT(s),
                           &allwinner_r40_detect_ops, s,
                           "DRAMCELLS", 1 * GiB);
-    sysbus_init_mmio(sbd, &s->detect_cells);
-    sysbus_mmio_map_overlap(sbd, 3, s->ram_addr, 10);
+    memory_region_add_subregion_overlap(get_system_memory(), s->ram_addr,
+                                        &s->detect_cells, 10);
     memory_region_set_enabled(&s->detect_cells, false);
 
     /*
      * We only support DRAM size up to 1G now, so prepare a high memory page
-     * after 1G for dualrank detect. index = 4
+     * after 1G for dualrank detect.
      */
     memory_region_init_io(&s->dram_high, OBJECT(s),
                             &allwinner_r40_dualrank_detect_ops, s,
                             "DRAMHIGH", KiB);
-    sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->dram_high);
-    sysbus_mmio_map(SYS_BUS_DEVICE(s), 4, s->ram_addr + GiB);
+    memory_region_add_subregion(get_system_memory(), s->ram_addr + GiB,
+                                &s->dram_high);
 }
 
 static void allwinner_r40_dramc_init(Object *obj)