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2018-03-02hw/core/split-irq: Device that splits IRQ linesPeter Maydell
In some board or SoC models it is necessary to split a qemu_irq line so that one input can feed multiple outputs. We currently have qemu_irq_split() for this, but that has several deficiencies: * it can only handle splitting a line into two * it unavoidably leaks memory, so it can't be used in a device that can be deleted Implement a qdev device that encapsulates splitting of IRQs, with a configurable number of outputs. (This is in some ways the inverse of the TYPE_OR_IRQ device.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180220180325.29818-13-peter.maydell@linaro.org
2014-10-23irq: Remove qemu_irq_intercept_outPeter Crosthwaite
No more users left and obsoleted by qdev_intercept_gpio_out. Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-07-01irq: Slim conversion of qemu_irq to QOMAndreas Färber
As a prequel to any big Pin refactoring plans, do an in-place conversion of qemu_irq to an Object, so that we can reference it in link<> properties. Signed-off-by: Andreas Färber <afaerber@suse.de> [ PC Changes: * Removed array-alloctor ref counting logic (limit changes just to * single IRQ allocator) * Removed WIP marking from subject line ] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-07-01irq: Allocate IRQs individuallyPeter Crosthwaite
Allocate each IRQ individually on array allocations. This prepares for QOMification of IRQs, where pointers to individual IRQs may be taken and handed around for usage as QOM Links. The g_renew() scheme used here is too fragile and would break all existing links should an IRQ list be extended. We now have to pass the IRQ count to qemu_free_irqs(). We have so few call sites however, so this change is reasonably trivial. Cc: agarcia@igalia.com Cc: mst@redhat.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Alberto Garcia <agarcia@igalia.com> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-10-14hw/core: Add interface to allocate and free a single IRQMarcel Apfelbaum
qemu_allocate_irq returns a single qemu_irq. The interface allows to specify an interrupt number. qemu_free_irq frees it. Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2013-04-08hw: move headers to include/Paolo Bonzini
Many of these should be cleaned up with proper qdev-/QOM-ification. Right now there are many catch-all headers in include/hw/ARCH depending on cpu.h, and this makes it necessary to compile these files per-target. However, fixing this does not belong in these patches. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>