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[Qemu-devel] [PATCH 3/9] hw/misc/empty_slot: Allow overide by device wit
From: |
Philippe Mathieu-Daudé |
Subject: |
[Qemu-devel] [PATCH 3/9] hw/misc/empty_slot: Allow overide by device with higher priority |
Date: |
Tue, 25 Jun 2019 00:00:50 +0200 |
The 'empty_slot' models a ChipEnable (or ChipSelect) MMIO device
pluggable on a bus.
The bus allow such slots to be not connected ('empty), thus no
bus errors are generated when this range is accessed.
The device is mapped at priority -10000 to allow other devices
to be mapped on top of it.
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
hw/misc/empty_slot.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/hw/misc/empty_slot.c b/hw/misc/empty_slot.c
index 0adf7a26dc..53299cdbd1 100644
--- a/hw/misc/empty_slot.c
+++ b/hw/misc/empty_slot.c
@@ -68,7 +68,11 @@ void empty_slot_init(hwaddr addr, uint64_t slot_size)
qdev_init_nofail(dev);
- sysbus_mmio_map(s, 0, addr);
+ /*
+ * We use a priority lower than the default UNIMPLEMENTED_DEVICE
+ * to be able to plug a UnimplementedDevice on an EmptySlot.
+ */
+ sysbus_mmio_map_overlap(s, 0, addr, -10000);
}
}
--
2.19.1
- [Qemu-devel] [PATCH 0/9] hw/misc: Clean the empty_slot device, Philippe Mathieu-Daudé, 2019/06/24
- [Qemu-devel] [PATCH 1/9] hw/misc: Move the 'empty_slot' device to hw/misc/, Philippe Mathieu-Daudé, 2019/06/24
- [Qemu-devel] [RFC PATCH 2/9] MAINTAINERS: Add the 'empty_slot' device with the 'unimp' one, Philippe Mathieu-Daudé, 2019/06/24
- [Qemu-devel] [PATCH 7/9] hw/sparc/sun4m: Mark some devices as 'unimplemented', Philippe Mathieu-Daudé, 2019/06/24
- [Qemu-devel] [PATCH 5/9] hw/misc/empty_slot: Add a qdev property 'name', Philippe Mathieu-Daudé, 2019/06/24
- [Qemu-devel] [PATCH 3/9] hw/misc/empty_slot: Allow overide by device with higher priority,
Philippe Mathieu-Daudé <=
- [Qemu-devel] [PATCH 6/9] hw/misc/empty_slot: Convert debug printf()s to trace events, Philippe Mathieu-Daudé, 2019/06/24
- [Qemu-devel] [PATCH 9/9] hw/misc/empty_slot: Pass the slot name as argument, Philippe Mathieu-Daudé, 2019/06/24
- [Qemu-devel] [PATCH 8/9] hw/sparc/sun4m: Simplify the RAM creation, Philippe Mathieu-Daudé, 2019/06/24
- [Qemu-devel] [PATCH 4/9] hw/misc/empty_slot: Add a qdev property 'size', Philippe Mathieu-Daudé, 2019/06/24