From: Jagannathan Raman <jag.raman@oracle.com>
To: qemu-devel@nongnu.org
Cc: elena.ufimtseva@oracle.com, john.g.johnson@oracle.com,
jag.raman@oracle.com, swapnil.ingle@nutanix.com,
john.levon@nutanix.com, alex.williamson@redhat.com,
stefanha@redhat.com, thanos.makatos@nutanix.com
Subject: [PATCH RFC server 09/11] vfio-user: handle device interrupts
Date: Mon, 19 Jul 2021 16:00:11 -0400 [thread overview]
Message-ID: <8da299d8adc92a9f6bba76931db90c286cfe920d.1626722742.git.jag.raman@oracle.com> (raw)
In-Reply-To: <cover.1626722742.git.jag.raman@oracle.com>
Forward remote device's interrupts to the guest
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
---
include/hw/remote/iohub.h | 2 ++
hw/remote/iohub.c | 6 ++++++
hw/remote/vfio-user-obj.c | 30 ++++++++++++++++++++++++++++++
hw/remote/trace-events | 1 +
4 files changed, 39 insertions(+)
diff --git a/include/hw/remote/iohub.h b/include/hw/remote/iohub.h
index 0bf98e0..132f496 100644
--- a/include/hw/remote/iohub.h
+++ b/include/hw/remote/iohub.h
@@ -15,6 +15,7 @@
#include "qemu/event_notifier.h"
#include "qemu/thread-posix.h"
#include "hw/remote/mpqemu-link.h"
+#include "libvfio-user/include/libvfio-user.h"
#define REMOTE_IOHUB_NB_PIRQS PCI_DEVFN_MAX
@@ -30,6 +31,7 @@ typedef struct RemoteIOHubState {
unsigned int irq_level[REMOTE_IOHUB_NB_PIRQS];
ResampleToken token[REMOTE_IOHUB_NB_PIRQS];
QemuMutex irq_level_lock[REMOTE_IOHUB_NB_PIRQS];
+ vfu_ctx_t *vfu_ctx[REMOTE_IOHUB_NB_PIRQS];
} RemoteIOHubState;
int remote_iohub_map_irq(PCIDevice *pci_dev, int intx);
diff --git a/hw/remote/iohub.c b/hw/remote/iohub.c
index 547d597..241c8d7 100644
--- a/hw/remote/iohub.c
+++ b/hw/remote/iohub.c
@@ -18,6 +18,8 @@
#include "hw/remote/machine.h"
#include "hw/remote/iohub.h"
#include "qemu/main-loop.h"
+#include "libvfio-user/include/libvfio-user.h"
+#include "trace.h"
void remote_iohub_init(RemoteIOHubState *iohub)
{
@@ -62,6 +64,10 @@ void remote_iohub_set_irq(void *opaque, int pirq, int level)
QEMU_LOCK_GUARD(&iohub->irq_level_lock[pirq]);
if (level) {
+ if (iohub->vfu_ctx[pirq]) {
+ trace_vfu_interrupt(pirq);
+ vfu_irq_trigger(iohub->vfu_ctx[pirq], 0);
+ }
if (++iohub->irq_level[pirq] == 1) {
event_notifier_set(&iohub->irqfds[pirq]);
}
diff --git a/hw/remote/vfio-user-obj.c b/hw/remote/vfio-user-obj.c
index 9853feb..d2a2e51 100644
--- a/hw/remote/vfio-user-obj.c
+++ b/hw/remote/vfio-user-obj.c
@@ -41,6 +41,9 @@
#include "sysemu/sysemu.h"
#include "hw/qdev-core.h"
#include "hw/pci/pci.h"
+#include "hw/boards.h"
+#include "hw/remote/iohub.h"
+#include "hw/remote/machine.h"
#include "libvfio-user/include/libvfio-user.h"
@@ -305,6 +308,26 @@ static void vfu_object_register_bars(vfu_ctx_t *vfu_ctx, PCIDevice *pdev)
}
}
+static int vfu_object_setup_irqs(vfu_ctx_t *vfu_ctx, PCIDevice *pci_dev)
+{
+ RemoteMachineState *machine = REMOTE_MACHINE(current_machine);
+ RemoteIOHubState *iohub = &machine->iohub;
+ int pirq, intx, ret;
+
+ ret = vfu_setup_device_nr_irqs(vfu_ctx, VFU_DEV_INTX_IRQ, 1);
+ if (ret < 0) {
+ return ret;
+ }
+
+ intx = pci_get_byte(pci_dev->config + PCI_INTERRUPT_PIN) - 1;
+
+ pirq = remote_iohub_map_irq(pci_dev, intx);
+
+ iohub->vfu_ctx[pirq] = vfu_ctx;
+
+ return 0;
+}
+
static void vfu_object_machine_done(Notifier *notifier, void *data)
{
VfuObject *o = container_of(notifier, VfuObject, machine_done);
@@ -361,6 +384,13 @@ static void vfu_object_machine_done(Notifier *notifier, void *data)
vfu_object_register_bars(o->vfu_ctx, o->pci_dev);
+ ret = vfu_object_setup_irqs(o->vfu_ctx, o->pci_dev);
+ if (ret < 0) {
+ error_setg(&error_abort, "vfu: Failed to setup interrupts for %s",
+ o->devid);
+ return;
+ }
+
qemu_thread_create(&o->vfu_ctx_thread, "VFU ctx runner", vfu_object_ctx_run,
o, QEMU_THREAD_JOINABLE);
}
diff --git a/hw/remote/trace-events b/hw/remote/trace-events
index f3f65e2..b419d6f 100644
--- a/hw/remote/trace-events
+++ b/hw/remote/trace-events
@@ -11,3 +11,4 @@ vfu_dma_register(uint64_t gpa, size_t len) "vfu: registering GPA 0x%"PRIx64", %z
vfu_dma_unregister(uint64_t gpa) "vfu: unregistering GPA 0x%"PRIx64""
vfu_bar_rw_enter(const char *op, uint64_t addr) "vfu: %s request for BAR address 0x%"PRIx64""
vfu_bar_rw_exit(const char *op, uint64_t addr) "vfu: Finished %s of BAR address 0x%"PRIx64""
+vfu_interrupt(int pirq) "vfu: sending interrupt to device - PIRQ %d"
--
1.8.3.1
next prev parent reply other threads:[~2021-07-19 20:08 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-19 6:27 [PATCH RFC 00/19] vfio-user implementation Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 01/19] vfio-user: introduce vfio-user protocol specification Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 02/19] vfio-user: add VFIO base abstract class Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 03/19] vfio-user: define VFIO Proxy and communication functions Elena Ufimtseva
2021-07-27 16:34 ` Stefan Hajnoczi
2021-07-28 18:08 ` John Johnson
2021-07-29 8:06 ` Stefan Hajnoczi
2021-07-19 6:27 ` [PATCH RFC 04/19] vfio-user: Define type vfio_user_pci_dev_info Elena Ufimtseva
2021-07-28 10:16 ` Stefan Hajnoczi
2021-07-29 0:55 ` John Johnson
2021-07-29 8:22 ` Stefan Hajnoczi
2021-07-19 6:27 ` [PATCH RFC 05/19] vfio-user: connect vfio proxy to remote server Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 06/19] vfio-user: negotiate protocol with " Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 07/19] vfio-user: define vfio-user pci ops Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 08/19] vfio-user: VFIO container setup & teardown Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 09/19] vfio-user: get device info and get irq info Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 10/19] vfio-user: device region read/write Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 11/19] vfio-user: get region and DMA map/unmap operations Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 12/19] vfio-user: probe remote device's BARs Elena Ufimtseva
2021-07-19 22:59 ` Alex Williamson
2021-07-20 1:39 ` John Johnson
2021-07-20 3:01 ` Alex Williamson
2021-07-19 6:27 ` [PATCH RFC 13/19] vfio-user: respond to remote DMA read/write requests Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 14/19] vfio_user: setup MSI/X interrupts and PCI config operations Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 15/19] vfio-user: vfio user device realize Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 16/19] vfio-user: pci reset Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 17/19] vfio-user: probe remote device ROM BAR Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 18/19] vfio-user: migration support Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 19/19] vfio-user: add migration cli options and version negotiation Elena Ufimtseva
2021-07-19 20:00 ` [PATCH RFC server 00/11] vfio-user server in QEMU Jagannathan Raman
2021-07-19 20:00 ` [PATCH RFC server 01/11] vfio-user: build library Jagannathan Raman
2021-07-19 20:24 ` John Levon
2021-07-20 12:06 ` Jag Raman
2021-07-20 12:20 ` Marc-André Lureau
2021-07-20 13:09 ` John Levon
2021-07-19 20:00 ` [PATCH RFC server 02/11] vfio-user: define vfio-user object Jagannathan Raman
2021-07-19 20:00 ` [PATCH RFC server 03/11] vfio-user: instantiate vfio-user context Jagannathan Raman
2021-07-19 20:00 ` [PATCH RFC server 04/11] vfio-user: find and init PCI device Jagannathan Raman
2021-07-26 15:05 ` John Levon
2021-07-28 17:08 ` Jag Raman
2021-07-19 20:00 ` [PATCH RFC server 05/11] vfio-user: run vfio-user context Jagannathan Raman
2021-07-20 14:17 ` Thanos Makatos
2021-08-13 14:51 ` Jag Raman
2021-08-16 12:52 ` John Levon
2021-08-16 14:10 ` Jag Raman
2021-07-19 20:00 ` [PATCH RFC server 06/11] vfio-user: handle PCI config space accesses Jagannathan Raman
2021-07-26 15:10 ` John Levon
2021-07-19 20:00 ` [PATCH RFC server 07/11] vfio-user: handle DMA mappings Jagannathan Raman
2021-07-20 14:38 ` Thanos Makatos
2021-07-19 20:00 ` [PATCH RFC server 08/11] vfio-user: handle PCI BAR accesses Jagannathan Raman
2021-07-19 20:00 ` Jagannathan Raman [this message]
2021-07-19 20:00 ` [PATCH RFC server 10/11] vfio-user: register handlers to facilitate migration Jagannathan Raman
2021-07-20 14:05 ` Thanos Makatos
2021-07-19 20:00 ` [PATCH RFC server 11/11] vfio-user: acceptance test Jagannathan Raman
2021-07-20 16:12 ` Thanos Makatos
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