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[PATCH RFC server v2 04/11] vfio-user: find and init PCI device
From: |
Jagannathan Raman |
Subject: |
[PATCH RFC server v2 04/11] vfio-user: find and init PCI device |
Date: |
Fri, 27 Aug 2021 13:53:23 -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 | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/hw/remote/vfio-user-obj.c b/hw/remote/vfio-user-obj.c
index 99d3dd1..5ae0991 100644
--- a/hw/remote/vfio-user-obj.c
+++ b/hw/remote/vfio-user-obj.c
@@ -38,6 +38,8 @@
#include "qapi/error.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"
OBJECT_DECLARE_TYPE(VfuObject, VfuObjectClass, VFU_OBJECT)
@@ -61,6 +63,8 @@ struct VfuObject {
Notifier machine_done;
vfu_ctx_t *vfu_ctx;
+
+ PCIDevice *pci_dev;
};
static void vfu_object_set_socket(Object *obj, const char *str, Error **errp)
@@ -88,6 +92,8 @@ static void vfu_object_set_devid(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;
+ int ret;
o->vfu_ctx = vfu_create_ctx(VFU_TRANS_SOCK, o->socket, 0,
o, VFU_DEV_TYPE_PCI);
@@ -96,6 +102,28 @@ static void vfu_object_machine_done(Notifier *notifier,
void *data)
strerror(errno));
return;
}
+
+ dev = qdev_find_recursive(sysbus_get_default(), o->devid);
+ if (dev == NULL) {
+ error_setg(&error_abort, "vfu: Device %s not found", o->devid);
+ return;
+ }
+
+ if (!object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
+ error_setg(&error_abort, "vfu: %s not a PCI devices", o->devid);
+ return;
+ }
+
+ o->pci_dev = PCI_DEVICE(dev);
+
+ ret = vfu_pci_init(o->vfu_ctx, VFU_PCI_TYPE_CONVENTIONAL,
+ PCI_HEADER_TYPE_NORMAL, 0);
+ if (ret < 0) {
+ error_setg(&error_abort,
+ "vfu: Failed to attach PCI device %s to context - %s",
+ o->devid, strerror(errno));
+ return;
+ }
}
static void vfu_object_init(Object *obj)
--
1.8.3.1
- Re: [PATCH RFC v2 01/16] vfio-user: introduce vfio-user protocol specification, (continued)
[PATCH RFC v2 13/16] vfio-user: dma map/unmap operations, Elena Ufimtseva, 2021/08/16
[PATCH RFC v2 16/16] vfio-user: migration support, Elena Ufimtseva, 2021/08/16
[PATCH RFC server v2 00/11] vfio-user server in QEMU, Jagannathan Raman, 2021/08/27
- [PATCH RFC server v2 01/11] vfio-user: build library, Jagannathan Raman, 2021/08/27
- [PATCH RFC server v2 02/11] vfio-user: define vfio-user object, Jagannathan Raman, 2021/08/27
- [PATCH RFC server v2 03/11] vfio-user: instantiate vfio-user context, Jagannathan Raman, 2021/08/27
- [PATCH RFC server v2 04/11] vfio-user: find and init PCI device,
Jagannathan Raman <=
- [PATCH RFC server v2 05/11] vfio-user: run vfio-user context, Jagannathan Raman, 2021/08/27
- [PATCH RFC server v2 07/11] vfio-user: handle DMA mappings, Jagannathan Raman, 2021/08/27
- [PATCH RFC server v2 06/11] vfio-user: handle PCI config space accesses, Jagannathan Raman, 2021/08/27
- [PATCH RFC server v2 08/11] vfio-user: handle PCI BAR accesses, Jagannathan Raman, 2021/08/27
- [PATCH RFC server v2 09/11] vfio-user: handle device interrupts, Jagannathan Raman, 2021/08/27
- [PATCH RFC server v2 10/11] vfio-user: register handlers to facilitate migration, Jagannathan Raman, 2021/08/27
- [PATCH RFC server v2 11/11] vfio-user: acceptance test, Jagannathan Raman, 2021/08/27