bc5a39bf26
This commit defines an interface allowing multi-phase reset. This aims to solve a problem of the actual single-phase reset (built in DeviceClass and BusClass): reset behavior is dependent on the order in which reset handlers are called. In particular doing external side-effect (like setting an qemu_irq) is problematic because receiving object may not be reset yet. The Resettable interface divides the reset in 3 well defined phases. To reset an object tree, all 1st phases are executed then all 2nd then all 3rd. See the comments in include/hw/resettable.h for a more complete description. The interface defines 3 phases to let the future possibility of holding an object into reset for some time. The qdev/qbus reset in DeviceClass and BusClass will be modified in following commits to use this interface. A mechanism is provided to allow executing a transitional reset handler in place of the 2nd phase which is executed in children-then-parent order inside a tree. This will allow to transition devices and buses smoothly while keeping the exact current qdev/qbus reset behavior for now. Documentation will be added in a following commit. Signed-off-by: Damien Hedde <damien.hedde@greensocs.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20200123132823.1117486-4-damien.hedde@greensocs.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
34 lines
1.3 KiB
Makefile
34 lines
1.3 KiB
Makefile
# core qdev-related obj files, also used by *-user:
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common-obj-y += qdev.o qdev-properties.o
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common-obj-y += bus.o
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common-obj-y += cpu.o
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common-obj-y += resettable.o
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common-obj-y += hotplug.o
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common-obj-y += vmstate-if.o
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# irq.o needed for qdev GPIO handling:
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common-obj-y += irq.o
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common-obj-$(CONFIG_SOFTMMU) += reset.o
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common-obj-$(CONFIG_SOFTMMU) += qdev-fw.o
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common-obj-$(CONFIG_SOFTMMU) += fw-path-provider.o
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common-obj-$(CONFIG_SOFTMMU) += nmi.o
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common-obj-$(CONFIG_SOFTMMU) += vm-change-state-handler.o
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common-obj-$(CONFIG_SOFTMMU) += qdev-properties-system.o
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common-obj-$(CONFIG_SOFTMMU) += sysbus.o
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common-obj-$(CONFIG_SOFTMMU) += machine.o
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common-obj-$(CONFIG_SOFTMMU) += null-machine.o
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common-obj-$(CONFIG_SOFTMMU) += loader.o
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common-obj-$(CONFIG_SOFTMMU) += machine-hmp-cmds.o
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obj-$(CONFIG_SOFTMMU) += machine-qmp-cmds.o
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obj-$(CONFIG_SOFTMMU) += numa.o
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common-obj-$(CONFIG_EMPTY_SLOT) += empty_slot.o
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common-obj-$(CONFIG_XILINX_AXI) += stream.o
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common-obj-$(CONFIG_PTIMER) += ptimer.o
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common-obj-$(CONFIG_FITLOADER) += loader-fit.o
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common-obj-$(CONFIG_REGISTER) += register.o
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common-obj-$(CONFIG_OR_IRQ) += or-irq.o
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common-obj-$(CONFIG_SPLIT_IRQ) += split-irq.o
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common-obj-$(CONFIG_PLATFORM_BUS) += platform-bus.o
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common-obj-$(CONFIG_GENERIC_LOADER) += generic-loader.o
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