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[PATCH v3 05/12] vfio-user: find and init PCI device
From: |
Jagannathan Raman |
Subject: |
[PATCH v3 05/12] vfio-user: find and init PCI device |
Date: |
Mon, 11 Oct 2021 01:31:10 -0400 |
Find the PCI device with specified id. Initialize the device context
with the QEMU PCI device
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>
---
hw/remote/vfio-user-obj.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/hw/remote/vfio-user-obj.c b/hw/remote/vfio-user-obj.c
index d26e5ec9e9..7ce4e5b256 100644
--- a/hw/remote/vfio-user-obj.c
+++ b/hw/remote/vfio-user-obj.c
@@ -44,6 +44,8 @@
#include "qemu/notify.h"
#include "sysemu/sysemu.h"
#include "libvfio-user.h"
+#include "hw/qdev-core.h"
+#include "hw/pci/pci.h"
#define TYPE_VFU_OBJECT "vfio-user-server"
OBJECT_DECLARE_TYPE(VfuObject, VfuObjectClass, VFU_OBJECT)
@@ -68,6 +70,8 @@ struct VfuObject {
Notifier machine_done;
vfu_ctx_t *vfu_ctx;
+
+ PCIDevice *pci_dev;
};
static void vfu_object_set_socket(Object *obj, Visitor *v, const char *name,
@@ -112,6 +116,9 @@ static void vfu_object_set_device(Object *obj, const char
*str, Error **errp)
static void vfu_object_machine_done(Notifier *notifier, void *data)
{
VfuObject *o = container_of(notifier, VfuObject, machine_done);
+ DeviceState *dev = NULL;
+ vfu_pci_type_t pci_type = VFU_PCI_TYPE_CONVENTIONAL;
+ int ret;
o->vfu_ctx = vfu_create_ctx(VFU_TRANS_SOCK, o->socket->u.q_unix.path, 0,
o, VFU_DEV_TYPE_PCI);
@@ -120,6 +127,31 @@ static void vfu_object_machine_done(Notifier *notifier,
void *data)
strerror(errno));
return;
}
+
+ dev = qdev_find_recursive(sysbus_get_default(), o->device);
+ if (dev == NULL) {
+ error_setg(&error_abort, "vfu: Device %s not found", o->device);
+ return;
+ }
+
+ if (!object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
+ error_setg(&error_abort, "vfu: %s not a PCI device", o->device);
+ return;
+ }
+
+ o->pci_dev = PCI_DEVICE(dev);
+
+ if (pci_is_express(o->pci_dev)) {
+ pci_type = VFU_PCI_TYPE_EXPRESS;
+ }
+
+ ret = vfu_pci_init(o->vfu_ctx, pci_type, PCI_HEADER_TYPE_NORMAL, 0);
+ if (ret < 0) {
+ error_setg(&error_abort,
+ "vfu: Failed to attach PCI device %s to context - %s",
+ o->device, strerror(errno));
+ return;
+ }
}
static void vfu_object_init(Object *obj)
--
2.20.1
- Re: [PATCH v3 01/12] configure, meson: override C compiler for cmake, (continued)
- [PATCH v3 02/12] vfio-user: build library, Jagannathan Raman, 2021/10/11
- [PATCH v3 03/12] vfio-user: define vfio-user-server object, Jagannathan Raman, 2021/10/11
- [PATCH v3 04/12] vfio-user: instantiate vfio-user context, Jagannathan Raman, 2021/10/11
- [PATCH v3 05/12] vfio-user: find and init PCI device,
Jagannathan Raman <=
- [PATCH v3 07/12] vfio-user: handle PCI config space accesses, Jagannathan Raman, 2021/10/11
- [PATCH v3 08/12] vfio-user: handle DMA mappings, Jagannathan Raman, 2021/10/11
- [PATCH v3 06/12] vfio-user: run vfio-user context, Jagannathan Raman, 2021/10/11
- [PATCH v3 10/12] vfio-user: handle device interrupts, Jagannathan Raman, 2021/10/11
- [PATCH v3 09/12] vfio-user: handle PCI BAR accesses, Jagannathan Raman, 2021/10/11