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[PATCH v3 08/19] backends/iommufd: Introduce helper function iommufd_bac
From: |
Zhenzhong Duan |
Subject: |
[PATCH v3 08/19] backends/iommufd: Introduce helper function iommufd_backend_get_device_info() |
Date: |
Mon, 29 Apr 2024 14:50:35 +0800 |
Introduce a helper function iommufd_backend_get_device_info() to get
host IOMMU related information through iommufd uAPI.
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Yi Sun <yi.y.sun@linux.intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
---
include/sysemu/iommufd.h | 4 ++++
backends/iommufd.c | 24 +++++++++++++++++++++++-
2 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/include/sysemu/iommufd.h b/include/sysemu/iommufd.h
index 6a9fb0007a..e9593637a3 100644
--- a/include/sysemu/iommufd.h
+++ b/include/sysemu/iommufd.h
@@ -17,6 +17,7 @@
#include "qom/object.h"
#include "exec/hwaddr.h"
#include "exec/cpu-common.h"
+#include <linux/iommufd.h>
#include "sysemu/host_iommu_device.h"
#define TYPE_IOMMUFD_BACKEND "iommufd"
@@ -47,6 +48,9 @@ int iommufd_backend_map_dma(IOMMUFDBackend *be, uint32_t
ioas_id, hwaddr iova,
ram_addr_t size, void *vaddr, bool readonly);
int iommufd_backend_unmap_dma(IOMMUFDBackend *be, uint32_t ioas_id,
hwaddr iova, ram_addr_t size);
+int iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid,
+ enum iommu_hw_info_type *type,
+ void *data, uint32_t len, Error **errp);
#define TYPE_HOST_IOMMU_DEVICE_IOMMUFD TYPE_HOST_IOMMU_DEVICE "-iommufd"
OBJECT_DECLARE_TYPE(HostIOMMUDeviceIOMMUFD, HostIOMMUDeviceIOMMUFDClass,
diff --git a/backends/iommufd.c b/backends/iommufd.c
index 19e46194a2..d61209788a 100644
--- a/backends/iommufd.c
+++ b/backends/iommufd.c
@@ -19,7 +19,6 @@
#include "monitor/monitor.h"
#include "trace.h"
#include <sys/ioctl.h>
-#include <linux/iommufd.h>
static void iommufd_backend_init(Object *obj)
{
@@ -211,6 +210,29 @@ int iommufd_backend_unmap_dma(IOMMUFDBackend *be, uint32_t
ioas_id,
return ret;
}
+int iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid,
+ enum iommu_hw_info_type *type,
+ void *data, uint32_t len, Error **errp)
+{
+ struct iommu_hw_info info = {
+ .size = sizeof(info),
+ .dev_id = devid,
+ .data_len = len,
+ .data_uptr = (uintptr_t)data,
+ };
+ int ret;
+
+ ret = ioctl(be->fd, IOMMU_GET_HW_INFO, &info);
+ if (ret) {
+ error_setg_errno(errp, errno, "Failed to get hardware info");
+ } else {
+ g_assert(type);
+ *type = info.out_data_type;
+ }
+
+ return ret;
+}
+
static const TypeInfo types[] = {
{
.name = TYPE_IOMMUFD_BACKEND,
--
2.34.1
- [PATCH v3 05/19] backends/host_iommu_device: Introduce HostIOMMUDeviceCaps, (continued)
- [PATCH v3 06/19] range: Introduce range_get_last_bit(), Zhenzhong Duan, 2024/04/29
- [PATCH v3 07/19] vfio/container: Implement HostIOMMUDeviceClass::realize() handler, Zhenzhong Duan, 2024/04/29
- [PATCH v3 08/19] backends/iommufd: Introduce helper function iommufd_backend_get_device_info(),
Zhenzhong Duan <=
- [PATCH v3 09/19] vfio/iommufd: Implement HostIOMMUDeviceClass::realize() handler, Zhenzhong Duan, 2024/04/29
- [PATCH v3 12/19] vfio: Introduce VFIOIOMMUClass::hiod_typename attribute, Zhenzhong Duan, 2024/04/29
- [PATCH v3 11/19] backends/iommufd: Implement HostIOMMUDeviceClass::check_cap() handler, Zhenzhong Duan, 2024/04/29
[PATCH v3 10/19] vfio/container: Implement HostIOMMUDeviceClass::check_cap() handler, Zhenzhong Duan, 2024/04/29
[PATCH v3 13/19] vfio: Create host IOMMU device instance, Zhenzhong Duan, 2024/04/29