From: "Cédric Le Goater" <clg@redhat.com>
To: Zhenzhong Duan <zhenzhong.duan@intel.com>, qemu-devel@nongnu.org
Cc: alex.williamson@redhat.com, eric.auger@redhat.com,
mst@redhat.com, peterx@redhat.com, jasowang@redhat.com,
jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com,
kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com,
Yi Sun <yi.y.sun@linux.intel.com>
Subject: Re: [PATCH v3 08/19] backends/iommufd: Introduce helper function iommufd_backend_get_device_info()
Date: Tue, 30 Apr 2024 11:41:31 +0200 [thread overview]
Message-ID: <44765b34-c4f7-48e0-9e74-5b8a8d427766@redhat.com> (raw)
In-Reply-To: <20240429065046.3688701-9-zhenzhong.duan@intel.com>
On 4/29/24 08:50, Zhenzhong Duan wrote:
> 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)
When taking an 'Error **' argument, routines preferably return a bool.
Thanks,
C.
> +{
> + 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,
next prev parent reply other threads:[~2024-04-30 9:42 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-29 6:50 [PATCH v3 00/19] Add a host IOMMU device abstraction to check with vIOMMU Zhenzhong Duan
2024-04-29 6:50 ` [PATCH v3 01/19] backends: Introduce HostIOMMUDevice abstract Zhenzhong Duan
2024-04-29 6:50 ` [PATCH v3 02/19] vfio/container: Introduce HostIOMMUDeviceLegacyVFIO device Zhenzhong Duan
2024-04-30 7:51 ` Cédric Le Goater
2024-04-30 9:13 ` Duan, Zhenzhong
2024-04-30 12:00 ` Cédric Le Goater
2024-04-29 6:50 ` [PATCH v3 03/19] backends/iommufd: Introduce abstract HostIOMMUDeviceIOMMUFD device Zhenzhong Duan
2024-04-29 6:50 ` [PATCH v3 04/19] vfio/iommufd: Introduce HostIOMMUDeviceIOMMUFDVFIO device Zhenzhong Duan
2024-04-30 7:52 ` Cédric Le Goater
2024-04-30 9:25 ` Duan, Zhenzhong
2024-04-29 6:50 ` [PATCH v3 05/19] backends/host_iommu_device: Introduce HostIOMMUDeviceCaps Zhenzhong Duan
2024-04-30 9:41 ` Cédric Le Goater
2024-04-30 9:55 ` Duan, Zhenzhong
2024-04-30 12:01 ` Cédric Le Goater
2024-05-07 6:11 ` Cédric Le Goater
2024-05-07 6:24 ` Duan, Zhenzhong
2024-04-29 6:50 ` [PATCH v3 06/19] range: Introduce range_get_last_bit() Zhenzhong Duan
2024-04-30 9:41 ` Cédric Le Goater
2024-04-30 9:58 ` Duan, Zhenzhong
2024-05-02 10:30 ` Cédric Le Goater
2024-05-06 6:45 ` Duan, Zhenzhong
2024-04-29 6:50 ` [PATCH v3 07/19] vfio/container: Implement HostIOMMUDeviceClass::realize() handler Zhenzhong Duan
2024-04-30 9:41 ` Cédric Le Goater
2024-04-30 9:59 ` Duan, Zhenzhong
2024-04-29 6:50 ` [PATCH v3 08/19] backends/iommufd: Introduce helper function iommufd_backend_get_device_info() Zhenzhong Duan
2024-04-30 9:41 ` Cédric Le Goater [this message]
2024-04-30 10:06 ` Duan, Zhenzhong
2024-04-29 6:50 ` [PATCH v3 09/19] vfio/iommufd: Implement HostIOMMUDeviceClass::realize() handler Zhenzhong Duan
2024-04-29 6:50 ` [PATCH v3 10/19] vfio/container: Implement HostIOMMUDeviceClass::check_cap() handler Zhenzhong Duan
2024-04-29 6:50 ` [PATCH v3 11/19] backends/iommufd: " Zhenzhong Duan
2024-04-30 9:41 ` Cédric Le Goater
2024-04-30 10:06 ` Duan, Zhenzhong
2024-04-30 12:12 ` Cédric Le Goater
2024-05-01 12:34 ` Duan, Zhenzhong
2024-05-02 8:17 ` Cédric Le Goater
2024-05-06 1:47 ` Duan, Zhenzhong
2024-04-29 6:50 ` [PATCH v3 12/19] vfio: Introduce VFIOIOMMUClass::hiod_typename attribute Zhenzhong Duan
2024-04-29 6:50 ` [PATCH v3 13/19] vfio: Create host IOMMU device instance Zhenzhong Duan
2024-04-30 9:41 ` Cédric Le Goater
2024-04-30 10:16 ` Duan, Zhenzhong
2024-04-30 12:15 ` Cédric Le Goater
2024-04-29 6:50 ` [PATCH v3 14/19] hw/pci: Introduce helper function pci_device_get_iommu_bus_devfn() Zhenzhong Duan
2024-04-29 6:50 ` [PATCH v3 15/19] hw/pci: Introduce pci_device_[set|unset]_iommu_device() Zhenzhong Duan
2024-05-07 7:04 ` Cédric Le Goater
2024-05-07 7:48 ` Duan, Zhenzhong
2024-05-07 12:26 ` Cédric Le Goater
2024-05-08 6:24 ` Duan, Zhenzhong
2024-04-29 6:50 ` [PATCH v3 16/19] vfio/pci: Pass HostIOMMUDevice to vIOMMU Zhenzhong Duan
2024-04-29 6:50 ` [PATCH v3 17/19] intel_iommu: Extract out vtd_cap_init() to initialize cap/ecap Zhenzhong Duan
2024-04-29 6:50 ` [PATCH v3 18/19] intel_iommu: Implement [set|unset]_iommu_device() callbacks Zhenzhong Duan
2024-04-29 6:50 ` [PATCH v3 19/19] intel_iommu: Check compatibility with host IOMMU capabilities Zhenzhong Duan
2024-05-03 14:04 ` [PATCH v3 00/19] Add a host IOMMU device abstraction to check with vIOMMU Cédric Le Goater
2024-05-03 14:10 ` Jason Gunthorpe
2024-05-03 14:29 ` Cédric Le Goater
2024-05-06 2:30 ` Duan, Zhenzhong
2024-05-06 12:05 ` Jason Gunthorpe
2024-05-07 2:24 ` Duan, Zhenzhong
2024-05-07 11:58 ` Jason Gunthorpe
2024-05-08 6:36 ` Duan, Zhenzhong
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