From 2b85e0cda4b066010efda63a2d2359872ba07a04 Mon Sep 17 00:00:00 2001 From: Thomas Huth Date: Tue, 10 Jan 2023 10:53:48 +0100 Subject: hw/intc: Extract the IRQ counting functions into a separate file MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit These IRQ counting functions will soon be required in binaries that do not include the APIC code, too, so let's extract them into a separate file that can be linked independently of the APIC code. While we're at it, change the apic_* prefix into kvm_* since the functions are used from the i8259 PIC (i.e. not the APIC), too. Reviewed-by: Bernhard Beschow Signed-off-by: Thomas Huth Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Mark Cave-Ayland Message-Id: <20230110095351.611724-2-thuth@redhat.com> Signed-off-by: Philippe Mathieu-Daudé --- hw/intc/kvm_irqcount.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 hw/intc/kvm_irqcount.c (limited to 'hw/intc/kvm_irqcount.c') diff --git a/hw/intc/kvm_irqcount.c b/hw/intc/kvm_irqcount.c new file mode 100644 index 0000000..2ef8a83 --- /dev/null +++ b/hw/intc/kvm_irqcount.c @@ -0,0 +1,49 @@ +/* + * KVM PIC functions for counting the delivered IRQs. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see + */ + +#include "qemu/osdep.h" +#include "hw/intc/kvm_irqcount.h" +#include "trace.h" + +static int kvm_irq_delivered; + +void kvm_report_irq_delivered(int delivered) +{ + kvm_irq_delivered += delivered; + + trace_kvm_report_irq_delivered(kvm_irq_delivered); +} + +void kvm_reset_irq_delivered(void) +{ + /* + * Copy this into a local variable to encourage gcc to emit a plain + * register for a sys/sdt.h marker. For details on this workaround, see: + * https://sourceware.org/bugzilla/show_bug.cgi?id=13296 + */ + volatile int k_i_d = kvm_irq_delivered; + trace_kvm_reset_irq_delivered(k_i_d); + + kvm_irq_delivered = 0; +} + +int kvm_get_irq_delivered(void) +{ + trace_kvm_get_irq_delivered(kvm_irq_delivered); + + return kvm_irq_delivered; +} -- cgit v1.1