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84969111e6
When a device creates a MemoryRegion without setting its ownership,
the MemoryRegion is added to the machine "/unattached" container in
the QOM tree.
Example with the Samsung SMDKC210 board:
$ arm-softmmu/qemu-system-arm -M smdkc210 -S -monitor stdio
(qemu) info qom-tree
/machine (smdkc210-machine)
/unattached (container)
/io[0] (qemu:memory-region)
/exynos4210.dram0[0] (qemu:memory-region)
/exynos4210.irom[0] (qemu:memory-region)
/exynos4210.iram[0] (qemu:memory-region)
/exynos4210.chipid[0] (qemu:memory-region)
...
/device[26] (exynos4210.uart)
/exynos4210.uart[0] (qemu:memory-region)
/soc (exynos4210)
^
\__ [*]
The irom/iram/chipid regions should go under 'soc' at [*].
Add a semantic patch to let the device own the memory region.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
160 lines
3.9 KiB
Plaintext
160 lines
3.9 KiB
Plaintext
/*
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Usage:
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spatch \
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--macro-file scripts/cocci-macro-file.h \
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--sp-file scripts/coccinelle/memory-region-housekeeping.cocci \
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--keep-comments \
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--in-place \
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--dir .
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*/
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// Replace memory_region_init_ram(readonly) by memory_region_init_rom()
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@@
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expression E1, E2, E3, E4, E5;
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symbol true;
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@@
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(
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- memory_region_init_ram(E1, E2, E3, E4, E5);
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+ memory_region_init_rom(E1, E2, E3, E4, E5);
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... WHEN != E1
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- memory_region_set_readonly(E1, true);
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- memory_region_init_ram_nomigrate(E1, E2, E3, E4, E5);
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+ memory_region_init_rom_nomigrate(E1, E2, E3, E4, E5);
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... WHEN != E1
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- memory_region_set_readonly(E1, true);
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)
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@possible_memory_region_init_rom@
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expression E1, E2, E3, E4, E5;
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position p;
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@@
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(
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memory_region_init_ram@p(E1, E2, E3, E4, E5);
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...
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memory_region_set_readonly(E1, true);
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memory_region_init_ram_nomigrate@p(E1, E2, E3, E4, E5);
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...
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memory_region_set_readonly(E1, true);
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)
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@script:python@
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p << possible_memory_region_init_rom.p;
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@@
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cocci.print_main("potential use of memory_region_init_rom*() in ", p)
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// Do not call memory_region_set_readonly() on ROM alias
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@@
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expression ROM, E1, E2, E3, E4;
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expression ALIAS, E5, E6, E7, E8;
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@@
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(
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memory_region_init_rom(ROM, E1, E2, E3, E4);
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memory_region_init_rom_nomigrate(ROM, E1, E2, E3, E4);
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)
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...
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memory_region_init_alias(ALIAS, E5, E6, ROM, E7, E8);
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- memory_region_set_readonly(ALIAS, true);
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// Replace by-hand memory_region_init_ram_nomigrate/vmstate_register_ram
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// code sequences with use of the new memory_region_init_ram function.
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// Similarly for the _rom and _rom_device functions.
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// We don't try to replace sequences with a non-NULL owner, because
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// there are none in the tree that can be automatically converted
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// (and only a handful that can be manually converted).
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@@
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expression MR;
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expression NAME;
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expression SIZE;
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expression ERRP;
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@@
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-memory_region_init_ram_nomigrate(MR, NULL, NAME, SIZE, ERRP);
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+memory_region_init_ram(MR, NULL, NAME, SIZE, ERRP);
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...
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-vmstate_register_ram_global(MR);
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@@
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expression MR;
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expression NAME;
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expression SIZE;
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expression ERRP;
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@@
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-memory_region_init_rom_nomigrate(MR, NULL, NAME, SIZE, ERRP);
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+memory_region_init_rom(MR, NULL, NAME, SIZE, ERRP);
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...
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-vmstate_register_ram_global(MR);
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@@
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expression MR;
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expression OPS;
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expression OPAQUE;
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expression NAME;
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expression SIZE;
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expression ERRP;
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@@
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-memory_region_init_rom_device_nomigrate(MR, NULL, OPS, OPAQUE, NAME, SIZE, ERRP);
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+memory_region_init_rom_device(MR, NULL, OPS, OPAQUE, NAME, SIZE, ERRP);
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...
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-vmstate_register_ram_global(MR);
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// Device is owner
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@@
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typedef DeviceState;
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identifier device_fn, dev, obj;
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expression E1, E2, E3, E4, E5;
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@@
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static void device_fn(DeviceState *dev, ...)
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{
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...
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Object *obj = OBJECT(dev);
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<+...
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(
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- memory_region_init(E1, NULL, E2, E3);
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+ memory_region_init(E1, obj, E2, E3);
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- memory_region_init_io(E1, NULL, E2, E3, E4, E5);
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+ memory_region_init_io(E1, obj, E2, E3, E4, E5);
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- memory_region_init_alias(E1, NULL, E2, E3, E4, E5);
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+ memory_region_init_alias(E1, obj, E2, E3, E4, E5);
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- memory_region_init_rom(E1, NULL, E2, E3, E4);
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+ memory_region_init_rom(E1, obj, E2, E3, E4);
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- memory_region_init_ram_shared_nomigrate(E1, NULL, E2, E3, E4, E5);
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+ memory_region_init_ram_shared_nomigrate(E1, obj, E2, E3, E4, E5);
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)
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...+>
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}
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@@
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identifier device_fn, dev;
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expression E1, E2, E3, E4, E5;
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@@
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static void device_fn(DeviceState *dev, ...)
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{
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<+...
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(
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- memory_region_init(E1, NULL, E2, E3);
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+ memory_region_init(E1, OBJECT(dev), E2, E3);
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- memory_region_init_io(E1, NULL, E2, E3, E4, E5);
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+ memory_region_init_io(E1, OBJECT(dev), E2, E3, E4, E5);
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- memory_region_init_alias(E1, NULL, E2, E3, E4, E5);
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+ memory_region_init_alias(E1, OBJECT(dev), E2, E3, E4, E5);
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- memory_region_init_rom(E1, NULL, E2, E3, E4);
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+ memory_region_init_rom(E1, OBJECT(dev), E2, E3, E4);
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- memory_region_init_ram_shared_nomigrate(E1, NULL, E2, E3, E4, E5);
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+ memory_region_init_ram_shared_nomigrate(E1, OBJECT(dev), E2, E3, E4, E5);
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)
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...+>
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}
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