diff options
| author | Shannon Nelson <shannon.nelson@amd.com> | 2023-05-19 23:56:28 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-06-27 16:47:08 +0200 |
| commit | 94591894df81ce443b0696440b9198fda6615c45 (patch) | |
| tree | 13ae1257bad62a89df2d32735d01cfc1bb2d9c6b /drivers/vdpa | |
| parent | pds_vdpa: get vdpa management info (diff) | |
| download | linux-94591894df81ce443b0696440b9198fda6615c45.tar.xz linux-94591894df81ce443b0696440b9198fda6615c45.zip | |
pds_vdpa: virtio bar setup for vdpa
Prep and use the "modern" virtio bar utilities to get our
virtio config space ready.
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230519215632.12343-8-shannon.nelson@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vdpa')
| -rw-r--r-- | drivers/vdpa/pds/aux_drv.c | 25 | ||||
| -rw-r--r-- | drivers/vdpa/pds/aux_drv.h | 3 |
2 files changed, 28 insertions, 0 deletions
diff --git a/drivers/vdpa/pds/aux_drv.c b/drivers/vdpa/pds/aux_drv.c index aa748cf55d2b..0c4a135b1484 100644 --- a/drivers/vdpa/pds/aux_drv.c +++ b/drivers/vdpa/pds/aux_drv.c @@ -4,6 +4,7 @@ #include <linux/auxiliary_bus.h> #include <linux/pci.h> #include <linux/vdpa.h> +#include <linux/virtio_pci_modern.h> #include <linux/pds/pds_common.h> #include <linux/pds/pds_core_if.h> @@ -19,12 +20,22 @@ static const struct auxiliary_device_id pds_vdpa_id_table[] = { {}, }; +static int pds_vdpa_device_id_check(struct pci_dev *pdev) +{ + if (pdev->device != PCI_DEVICE_ID_PENSANDO_VDPA_VF || + pdev->vendor != PCI_VENDOR_ID_PENSANDO) + return -ENODEV; + + return PCI_DEVICE_ID_PENSANDO_VDPA_VF; +} + static int pds_vdpa_probe(struct auxiliary_device *aux_dev, const struct auxiliary_device_id *id) { struct pds_auxiliary_dev *padev = container_of(aux_dev, struct pds_auxiliary_dev, aux_dev); + struct device *dev = &aux_dev->dev; struct pds_vdpa_aux *vdpa_aux; int err; @@ -41,8 +52,21 @@ static int pds_vdpa_probe(struct auxiliary_device *aux_dev, if (err) goto err_free_mem; + /* Find the virtio configuration */ + vdpa_aux->vd_mdev.pci_dev = padev->vf_pdev; + vdpa_aux->vd_mdev.device_id_check = pds_vdpa_device_id_check; + vdpa_aux->vd_mdev.dma_mask = DMA_BIT_MASK(PDS_CORE_ADDR_LEN); + err = vp_modern_probe(&vdpa_aux->vd_mdev); + if (err) { + dev_err(dev, "Unable to probe for virtio configuration: %pe\n", + ERR_PTR(err)); + goto err_free_mgmt_info; + } + return 0; +err_free_mgmt_info: + pci_free_irq_vectors(padev->vf_pdev); err_free_mem: kfree(vdpa_aux); auxiliary_set_drvdata(aux_dev, NULL); @@ -55,6 +79,7 @@ static void pds_vdpa_remove(struct auxiliary_device *aux_dev) struct pds_vdpa_aux *vdpa_aux = auxiliary_get_drvdata(aux_dev); struct device *dev = &aux_dev->dev; + vp_modern_remove(&vdpa_aux->vd_mdev); pci_free_irq_vectors(vdpa_aux->padev->vf_pdev); kfree(vdpa_aux); diff --git a/drivers/vdpa/pds/aux_drv.h b/drivers/vdpa/pds/aux_drv.h index dcec782e79eb..99e0ff340bfa 100644 --- a/drivers/vdpa/pds/aux_drv.h +++ b/drivers/vdpa/pds/aux_drv.h @@ -4,6 +4,8 @@ #ifndef _AUX_DRV_H_ #define _AUX_DRV_H_ +#include <linux/virtio_pci_modern.h> + #define PDS_VDPA_DRV_DESCRIPTION "AMD/Pensando vDPA VF Device Driver" #define PDS_VDPA_DRV_NAME KBUILD_MODNAME @@ -16,6 +18,7 @@ struct pds_vdpa_aux { int vf_id; struct dentry *dentry; + struct virtio_pci_modern_device vd_mdev; int nintrs; }; |