| Message ID | 20210915095037.1149-5-shameerali.kolothum.thodi@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | vfio/hisilicon: add acc live migration driver | expand |
On Wed, Sep 15, 2021 at 10:50:35AM +0100, Shameer Kolothum wrote: > +static const struct vfio_device_ops hisi_acc_vfio_pci_ops = { > + .name = "hisi-acc-vfio-pci", > + .open_device = hisi_acc_vfio_pci_open_device, > + .close_device = vfio_pci_core_close_device, > + .ioctl = vfio_pci_core_ioctl, > + .read = vfio_pci_core_read, > + .write = vfio_pci_core_write, > + .mmap = vfio_pci_core_mmap, > + .request = vfio_pci_core_request, > + .match = vfio_pci_core_match, > +}; Avoid horizontal alignments please > +static void hisi_acc_vfio_pci_remove(struct pci_dev *pdev) > +{ > + struct vfio_pci_core_device *vdev = dev_get_drvdata(&pdev->dev); > + > + vfio_pci_core_unregister_device(vdev); > + vfio_pci_core_uninit_device(vdev); > + kfree(vdev); > +} > + > +static const struct pci_device_id hisi_acc_vfio_pci_table[] = { > + { PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_HUAWEI, SEC_VF_PCI_DEVICE_ID) }, > + { PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_HUAWEI, HPRE_VF_PCI_DEVICE_ID) }, > + { PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_HUAWEI, ZIP_VF_PCI_DEVICE_ID) }, > + { 0, } Just {} > +}; > + > +MODULE_DEVICE_TABLE(pci, hisi_acc_vfio_pci_table); > + > +static struct pci_driver hisi_acc_vfio_pci_driver = { > + .name = "hisi-acc-vfio-pci", This shoud be KBUILD_MODNAME, the string must always match the module name Jason
> -----Original Message----- > From: Jason Gunthorpe [mailto:jgg@nvidia.com] > Sent: 15 September 2021 13:52 > To: Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com> > Cc: kvm@vger.kernel.org; linux-kernel@vger.kernel.org; > linux-crypto@vger.kernel.org; alex.williamson@redhat.com; > mgurtovoy@nvidia.com; Linuxarm <linuxarm@huawei.com>; liulongfang > <liulongfang@huawei.com>; Zengtao (B) <prime.zeng@hisilicon.com>; > Jonathan Cameron <jonathan.cameron@huawei.com>; Wangzhou (B) > <wangzhou1@hisilicon.com> > Subject: Re: [PATCH v3 4/6] hisi-acc-vfio-pci: add new vfio_pci driver for > HiSilicon ACC devices > > On Wed, Sep 15, 2021 at 10:50:35AM +0100, Shameer Kolothum wrote: > > +static const struct vfio_device_ops hisi_acc_vfio_pci_ops = { > > + .name = "hisi-acc-vfio-pci", > > + .open_device = hisi_acc_vfio_pci_open_device, > > + .close_device = vfio_pci_core_close_device, > > + .ioctl = vfio_pci_core_ioctl, > > + .read = vfio_pci_core_read, > > + .write = vfio_pci_core_write, > > + .mmap = vfio_pci_core_mmap, > > + .request = vfio_pci_core_request, > > + .match = vfio_pci_core_match, > > +}; > > Avoid horizontal alignments please Sure. > > > +static void hisi_acc_vfio_pci_remove(struct pci_dev *pdev) { > > + struct vfio_pci_core_device *vdev = dev_get_drvdata(&pdev->dev); > > + > > + vfio_pci_core_unregister_device(vdev); > > + vfio_pci_core_uninit_device(vdev); > > + kfree(vdev); > > +} > > + > > +static const struct pci_device_id hisi_acc_vfio_pci_table[] = { > > + { PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_HUAWEI, > SEC_VF_PCI_DEVICE_ID) }, > > + { PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_HUAWEI, > HPRE_VF_PCI_DEVICE_ID) }, > > + { PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_HUAWEI, > ZIP_VF_PCI_DEVICE_ID) }, > > + { 0, } > > Just {} Ok. > > +}; > > + > > +MODULE_DEVICE_TABLE(pci, hisi_acc_vfio_pci_table); > > + > > +static struct pci_driver hisi_acc_vfio_pci_driver = { > > + .name = "hisi-acc-vfio-pci", > > This shoud be KBUILD_MODNAME, the string must always match the module > name Ok. Will update. Thanks, Shameer
diff --git a/drivers/vfio/pci/Kconfig b/drivers/vfio/pci/Kconfig index 860424ccda1b..4fed27fa413d 100644 --- a/drivers/vfio/pci/Kconfig +++ b/drivers/vfio/pci/Kconfig @@ -43,4 +43,13 @@ config VFIO_PCI_IGD To enable Intel IGD assignment through vfio-pci, say Y. endif + +config HISI_ACC_VFIO_PCI + tristate "VFIO PCI support for HiSilicon ACC devices" + depends on ARM64 && VFIO_PCI_CORE + help + This provides generic PCI support for HiSilicon ACC devices + using the VFIO framework. + + If you don't know what to do here, say N. endif diff --git a/drivers/vfio/pci/Makefile b/drivers/vfio/pci/Makefile index 349d68d242b4..9d90b036cce6 100644 --- a/drivers/vfio/pci/Makefile +++ b/drivers/vfio/pci/Makefile @@ -7,3 +7,6 @@ obj-$(CONFIG_VFIO_PCI_CORE) += vfio-pci-core.o vfio-pci-y := vfio_pci.o vfio-pci-$(CONFIG_VFIO_PCI_IGD) += vfio_pci_igd.o obj-$(CONFIG_VFIO_PCI) += vfio-pci.o + +hisi-acc-vfio-pci-y := hisi_acc_vfio_pci.o +obj-$(CONFIG_HISI_ACC_VFIO_PCI) += hisi-acc-vfio-pci.o diff --git a/drivers/vfio/pci/hisi_acc_vfio_pci.c b/drivers/vfio/pci/hisi_acc_vfio_pci.c new file mode 100644 index 000000000000..c847bc469644 --- /dev/null +++ b/drivers/vfio/pci/hisi_acc_vfio_pci.c @@ -0,0 +1,99 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2021, HiSilicon Ltd. + */ + +#include <linux/device.h> +#include <linux/eventfd.h> +#include <linux/file.h> +#include <linux/hisi_acc_qm.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/vfio.h> +#include <linux/vfio_pci_core.h> + +static int hisi_acc_vfio_pci_open_device(struct vfio_device *core_vdev) +{ + struct vfio_pci_core_device *vdev = + container_of(core_vdev, struct vfio_pci_core_device, vdev); + int ret; + + ret = vfio_pci_core_enable(vdev); + if (ret) + return ret; + + vfio_pci_core_finish_enable(vdev); + + return 0; +} + +static const struct vfio_device_ops hisi_acc_vfio_pci_ops = { + .name = "hisi-acc-vfio-pci", + .open_device = hisi_acc_vfio_pci_open_device, + .close_device = vfio_pci_core_close_device, + .ioctl = vfio_pci_core_ioctl, + .read = vfio_pci_core_read, + .write = vfio_pci_core_write, + .mmap = vfio_pci_core_mmap, + .request = vfio_pci_core_request, + .match = vfio_pci_core_match, +}; + +static int hisi_acc_vfio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + struct vfio_pci_core_device *vdev; + int ret; + + vdev = kzalloc(sizeof(*vdev), GFP_KERNEL); + if (!vdev) + return -ENOMEM; + + vfio_pci_core_init_device(vdev, pdev, &hisi_acc_vfio_pci_ops); + + ret = vfio_pci_core_register_device(vdev); + if (ret) + goto out_free; + + dev_set_drvdata(&pdev->dev, vdev); + + return 0; + +out_free: + vfio_pci_core_uninit_device(vdev); + kfree(vdev); + return ret; +} + +static void hisi_acc_vfio_pci_remove(struct pci_dev *pdev) +{ + struct vfio_pci_core_device *vdev = dev_get_drvdata(&pdev->dev); + + vfio_pci_core_unregister_device(vdev); + vfio_pci_core_uninit_device(vdev); + kfree(vdev); +} + +static const struct pci_device_id hisi_acc_vfio_pci_table[] = { + { PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_HUAWEI, SEC_VF_PCI_DEVICE_ID) }, + { PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_HUAWEI, HPRE_VF_PCI_DEVICE_ID) }, + { PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_HUAWEI, ZIP_VF_PCI_DEVICE_ID) }, + { 0, } +}; + +MODULE_DEVICE_TABLE(pci, hisi_acc_vfio_pci_table); + +static struct pci_driver hisi_acc_vfio_pci_driver = { + .name = "hisi-acc-vfio-pci", + .id_table = hisi_acc_vfio_pci_table, + .probe = hisi_acc_vfio_pci_probe, + .remove = hisi_acc_vfio_pci_remove, + .err_handler = &vfio_pci_core_err_handlers, +}; + +module_pci_driver(hisi_acc_vfio_pci_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Liu Longfang <liulongfang@huawei.com>"); +MODULE_AUTHOR("Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>"); +MODULE_DESCRIPTION("HiSilicon VFIO PCI - Generic VFIO PCI driver for HiSilicon ACC device family");
Add a vendor-specific vfio_pci driver for HiSilicon ACC devices. This will be extended in subsequent patches to add support for VFIO live migration feature. Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> --- drivers/vfio/pci/Kconfig | 9 +++ drivers/vfio/pci/Makefile | 3 + drivers/vfio/pci/hisi_acc_vfio_pci.c | 99 ++++++++++++++++++++++++++++ 3 files changed, 111 insertions(+) create mode 100644 drivers/vfio/pci/hisi_acc_vfio_pci.c