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https://github.com/Motorhead1991/qemu.git
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f18a288632
The current use of aliased memory regions causes us 2 problems: firstly the output of "info qom-tree" is absolutely huge and difficult to read, and secondly we have already reached the internal limit for memory regions as adding any new memory region into the mac-io region causes QEMU to assert with "phys_section_add: Assertion `map->sections_nb < TARGET_PAGE_SIZE' failed". Implement the mac-io region aliasing using a single IO memory region that applies IO_SLICE_MASK representing the maximum size of the aliased region and then forwarding the access to the existing mac-io memory region using the address space API. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20230621085353.113233-12-mark.cave-ayland@ilande.co.uk> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/*
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* QEMU Motorla 680x0 Macintosh hardware System Emulator
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef HW_Q800_H
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#define HW_Q800_H
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#include "hw/boards.h"
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#include "qom/object.h"
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#include "target/m68k/cpu-qom.h"
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#include "exec/memory.h"
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#include "hw/m68k/q800-glue.h"
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/*
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* The main Q800 machine
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*/
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struct Q800MachineState {
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MachineState parent_obj;
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M68kCPU cpu;
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MemoryRegion rom;
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GLUEState glue;
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MemoryRegion macio;
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MemoryRegion macio_alias;
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};
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#define TYPE_Q800_MACHINE MACHINE_TYPE_NAME("q800")
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OBJECT_DECLARE_SIMPLE_TYPE(Q800MachineState, Q800_MACHINE)
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#endif
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