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From c7e1a8da5c3576d962c10c7afc11b0146f6b9adc Mon Sep 17 00:00:00 2001
From: Alex Williamson <alex.williamson@redhat.com>
Date: Fri, 29 Sep 2017 21:44:24 +0200
Subject: [PATCH 03/27] hw/vfio/pci: generalize mask/unmask to any IRQ index

RH-Author: Alex Williamson <alex.williamson@redhat.com>
Message-id: <20170929214424.16765.25345.stgit@gimli.home>
Patchwork-id: 76761
O-Subject: [RHEL-7.5 qemu-kvm PATCH 03/16] hw/vfio/pci: generalize mask/unmask to any IRQ index
Bugzilla: 1494181
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
RH-Acked-by: Auger Eric <eric.auger@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>

From: Eric Auger <eric.auger@linaro.org>

Upstream: 079eb19cbb3079536788dfd58832824804815e48

To prepare for platform device introduction, rename vfio_mask_intx
and vfio_unmask_intx into vfio_mask_single_irqindex and respectively
unmask_single_irqindex. Also use a nex index parameter.

With that name and prototype the function will be usable for other
indexes than VFIO_PCI_INTX_IRQ_INDEX.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 hw/misc/vfio.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/hw/misc/vfio.c b/hw/misc/vfio.c
index a1ca883..ed9b8c4 100644
--- a/hw/misc/vfio.c
+++ b/hw/misc/vfio.c
@@ -288,12 +288,12 @@ static void vfio_disable_irqindex(VFIOPCIDevice *vdev, int index)
 /*
  * INTx
  */
-static void vfio_unmask_intx(VFIOPCIDevice *vdev)
+static void vfio_unmask_single_irqindex(VFIOPCIDevice *vdev, int index)
 {
     struct vfio_irq_set irq_set = {
         .argsz = sizeof(irq_set),
         .flags = VFIO_IRQ_SET_DATA_NONE | VFIO_IRQ_SET_ACTION_UNMASK,
-        .index = VFIO_PCI_INTX_IRQ_INDEX,
+        .index = index,
         .start = 0,
         .count = 1,
     };
@@ -302,12 +302,12 @@ static void vfio_unmask_intx(VFIOPCIDevice *vdev)
 }
 
 #ifdef CONFIG_KVM /* Unused outside of CONFIG_KVM code */
-static void vfio_mask_intx(VFIOPCIDevice *vdev)
+static void vfio_mask_single_irqindex(VFIOPCIDevice *vdev, int index)
 {
     struct vfio_irq_set irq_set = {
         .argsz = sizeof(irq_set),
         .flags = VFIO_IRQ_SET_DATA_NONE | VFIO_IRQ_SET_ACTION_MASK,
-        .index = VFIO_PCI_INTX_IRQ_INDEX,
+        .index = index,
         .start = 0,
         .count = 1,
     };
@@ -376,7 +376,7 @@ static void vfio_eoi(VFIOPCIDevice *vdev)
 
     vdev->intx.pending = false;
     qemu_set_irq(vdev->pdev.irq[vdev->intx.pin], 0);
-    vfio_unmask_intx(vdev);
+    vfio_unmask_single_irqindex(vdev, VFIO_PCI_INTX_IRQ_INDEX);
 }
 
 static void vfio_enable_intx_kvm(VFIOPCIDevice *vdev)
@@ -399,7 +399,7 @@ static void vfio_enable_intx_kvm(VFIOPCIDevice *vdev)
 
     /* Get to a known interrupt state */
     qemu_set_fd_handler(irqfd.fd, NULL, NULL, vdev);
-    vfio_mask_intx(vdev);
+    vfio_mask_single_irqindex(vdev, VFIO_PCI_INTX_IRQ_INDEX);
     vdev->intx.pending = false;
     qemu_set_irq(vdev->pdev.irq[vdev->intx.pin], 0);
 
@@ -437,7 +437,7 @@ static void vfio_enable_intx_kvm(VFIOPCIDevice *vdev)
     }
 
     /* Let'em rip */
-    vfio_unmask_intx(vdev);
+    vfio_unmask_single_irqindex(vdev, VFIO_PCI_INTX_IRQ_INDEX);
 
     vdev->intx.kvm_accel = true;
 
@@ -454,7 +454,7 @@ fail_irqfd:
     event_notifier_cleanup(&vdev->intx.unmask);
 fail:
     qemu_set_fd_handler(irqfd.fd, vfio_intx_interrupt, NULL, vdev);
-    vfio_unmask_intx(vdev);
+    vfio_unmask_single_irqindex(vdev, VFIO_PCI_INTX_IRQ_INDEX);
 #endif
 }
 
@@ -475,7 +475,7 @@ static void vfio_disable_intx_kvm(VFIOPCIDevice *vdev)
      * Get to a known state, hardware masked, QEMU ready to accept new
      * interrupts, QEMU IRQ de-asserted.
      */
-    vfio_mask_intx(vdev);
+    vfio_mask_single_irqindex(vdev, VFIO_PCI_INTX_IRQ_INDEX);
     vdev->intx.pending = false;
     qemu_set_irq(vdev->pdev.irq[vdev->intx.pin], 0);
 
@@ -493,7 +493,7 @@ static void vfio_disable_intx_kvm(VFIOPCIDevice *vdev)
     vdev->intx.kvm_accel = false;
 
     /* If we've missed an event, let it re-fire through QEMU */
-    vfio_unmask_intx(vdev);
+    vfio_unmask_single_irqindex(vdev, VFIO_PCI_INTX_IRQ_INDEX);
 
     DPRINTF("%s(%04x:%02x:%02x.%x) KVM INTx accel disabled\n",
             __func__, vdev->host.domain, vdev->host.bus,
-- 
1.8.3.1