search for: pci_write_config_byt

...tial console to prevent VRAM corruption while we initialize + * the HW. For vgacon it will move console memory from VGA VRAM to RAM. + */ + console_lock(); + do_blank_screen(1); + console_unlock(); + + /* Completely disable access to VGA IO/memory, just to be sure no one + * will change it. */ + pci_write_config_byte(pdev, NV_PCI_VGAMEM_ENABLE, 0); + ret = nouveau_cli_create(pdev, "DRM", sizeof(*drm), (void**)&drm); if (ret) - return ret; + goto fail_cli; dev->dev_private = drm; drm->dev = dev; @@ -336,6 +350,11 @@ nouveau_drm_load(struct drm_device *dev, unsigned long flags)...

...common + offsetof(struct virtio_pci_cap, > + bar), > + &bar); > + pci_read_config_dword(dev, common + offsetof(struct virtio_pci_cap, > + offset), > + &offset); > + > + /* Program cfg capability for dword access into common cfg. */ > + pci_write_config_byte(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > + cap.bar), > + bar); > + pci_write_config_dword(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > + cap.length), > + 0x4); > + > + /* Select features dword that has VIRTIO_F_IOMMU_PLATFORM. */ &gt...

...common + offsetof(struct virtio_pci_cap, > + bar), > + &bar); > + pci_read_config_dword(dev, common + offsetof(struct virtio_pci_cap, > + offset), > + &offset); > + > + /* Program cfg capability for dword access into common cfg. */ > + pci_write_config_byte(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > + cap.bar), > + bar); > + pci_write_config_dword(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > + cap.length), > + 0x4); > + > + /* Select features dword that has VIRTIO_F_IOMMU_PLATFORM. */ &gt...

...common + offsetof(struct virtio_pci_cap, > + bar), > + &bar); > + pci_read_config_dword(dev, common + offsetof(struct virtio_pci_cap, > + offset), > + &offset); > + > + /* Program cfg capability for dword access into common cfg. */ > + pci_write_config_byte(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > + cap.bar), > + bar); > + pci_write_config_dword(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > + cap.length), > + 0x4); > + > + /* Select features dword that has VIRTIO_F_IOMMU_PLATFORM. */ &gt...

...common + offsetof(struct virtio_pci_cap, > + bar), > + &bar); > + pci_read_config_dword(dev, common + offsetof(struct virtio_pci_cap, > + offset), > + &offset); > + > + /* Program cfg capability for dword access into common cfg. */ > + pci_write_config_byte(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > + cap.bar), > + bar); > + pci_write_config_dword(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > + cap.length), > + 0x4); > + > + /* Select features dword that has VIRTIO_F_IOMMU_PLATFORM. */ &gt...

...t; > + &bar); > > > + pci_read_config_dword(dev, common + offsetof(struct virtio_pci_cap, > > > + offset), > > > + &offset); > > > + > > > + /* Program cfg capability for dword access into common cfg. */ > > > + pci_write_config_byte(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > > > + cap.bar), > > > + bar); > > > + pci_write_config_dword(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > > > + cap.length), > > > + 0x4); > > > + > > &g...

...t; > + &bar); > > > + pci_read_config_dword(dev, common + offsetof(struct virtio_pci_cap, > > > + offset), > > > + &offset); > > > + > > > + /* Program cfg capability for dword access into common cfg. */ > > > + pci_write_config_byte(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > > > + cap.bar), > > > + bar); > > > + pci_write_config_dword(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > > > + cap.length), > > > + 0x4); > > > + > > &g...

...u32 length, + u32 offset) +{ + offset += cap->offset; + + if (offset + length > cap->offset + cap->length) { + dev_warn(&dev->dev, + "read of %d bytes at offset 0x%x overflows cap of size %d\n", + length, offset, cap->length); + return -EOVERFLOW; + } + + pci_write_config_byte(dev, cfg + VPCI_FIELD(bar), cap->bar); + pci_write_config_dword(dev, cfg + VPCI_FIELD(length), length); + pci_write_config_dword(dev, cfg + VPCI_FIELD(offset), offset); + return 0; +} + +static u32 viommu_cread(struct pci_dev *dev, int cfg, + struct viommu_cap_config *cap, u32 length, u32 off...

...ODEV; + } + + pci_read_config_byte(dev, common + offsetof(struct virtio_pci_cap, + bar), + &bar); + pci_read_config_dword(dev, common + offsetof(struct virtio_pci_cap, + offset), + &offset); + + /* Program cfg capability for dword access into common cfg. */ + pci_write_config_byte(dev, cfg + offsetof(struct virtio_pci_cfg_cap, + cap.bar), + bar); + pci_write_config_dword(dev, cfg + offsetof(struct virtio_pci_cfg_cap, + cap.length), + 0x4); + + /* Select features dword that has VIRTIO_F_IOMMU_PLATFORM. */ + pci_write_config_dword(dev, cfg + of...

...ODEV; + } + + pci_read_config_byte(dev, common + offsetof(struct virtio_pci_cap, + bar), + &bar); + pci_read_config_dword(dev, common + offsetof(struct virtio_pci_cap, + offset), + &offset); + + /* Program cfg capability for dword access into common cfg. */ + pci_write_config_byte(dev, cfg + offsetof(struct virtio_pci_cfg_cap, + cap.bar), + bar); + pci_write_config_dword(dev, cfg + offsetof(struct virtio_pci_cfg_cap, + cap.length), + 0x4); + + /* Select features dword that has VIRTIO_F_IOMMU_PLATFORM. */ + pci_write_config_dword(dev, cfg + of...

Legacy virtio devices always bypassed an IOMMU, so using them with vfio was never safe. This adds a quirk detecting these and disabling VFIO unless the noiommu mode is used. At the moment, this only applies to virtio-pci devices. The patch might make sense on stable as well. Michael S. Tsirkin (2): vfio: report group noiommu status vfio: add virtio pci quirk

Legacy virtio devices always bypassed an IOMMU, so using them with vfio was never safe. This adds a quirk detecting these and disabling VFIO unless the noiommu mode is used. At the moment, this only applies to virtio-pci devices. The patch might make sense on stable as well. Michael S. Tsirkin (2): vfio: report group noiommu status vfio: add virtio pci quirk

...cap->offset; > + > + if (offset + length > cap->offset + cap->length) { > + dev_warn(&dev->dev, > + "read of %d bytes at offset 0x%x overflows cap of size %d\n", > + length, offset, cap->length); > + return -EOVERFLOW; > + } > + > + pci_write_config_byte(dev, cfg + VPCI_FIELD(bar), cap->bar); > + pci_write_config_dword(dev, cfg + VPCI_FIELD(length), length); > + pci_write_config_dword(dev, cfg + VPCI_FIELD(offset), offset); > + return 0; > +} > + > +static u32 viommu_cread(struct pci_dev *dev, int cfg, > + struct viommu_c...

...> > + bar), > > + &bar); > > + pci_read_config_dword(dev, common + offsetof(struct virtio_pci_cap, > > + offset), > > + &offset); > > + > > + /* Program cfg capability for dword access into common cfg. */ > > + pci_write_config_byte(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > > + cap.bar), > > + bar); > > + pci_write_config_dword(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > > + cap.length), > > + 0x4); > > + > > + /* Select features dword that...

This is an attempt to allow enabling IOMMU for DMA. Design: - new feature bit IOMMU_PLATFORM which means host won't bypass IOMMU - virtio core uses DMA API if it sees IOMMU_PLATFORM - add quirk for vfio to disable device unless IOMMU_PLATFORM is set or the no-iommu mode is enabled - while I'm not sure how it will be used, it seems like a good idea to also have

This is an attempt to allow enabling IOMMU for DMA. Design: - new feature bit IOMMU_PLATFORM which means host won't bypass IOMMU - virtio core uses DMA API if it sees IOMMU_PLATFORM - add quirk for vfio to disable device unless IOMMU_PLATFORM is set or the no-iommu mode is enabled - while I'm not sure how it will be used, it seems like a good idea to also have

...t; > > > + pci_read_config_dword(dev, common + offsetof(struct virtio_pci_cap, > > > > + offset), > > > > + &offset); > > > > + > > > > + /* Program cfg capability for dword access into common cfg. */ > > > > + pci_write_config_byte(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > > > > + cap.bar), > > > > + bar); > > > > + pci_write_config_dword(dev, cfg + offsetof(struct virtio_pci_cfg_cap, > > > > + cap.length), > > > > + 0x4); >...

This should allow testing when QEMU gets VIRTIO_PCI_CAP_PCI_CFG support, but I'm pretty sure we should never allow these patches upstream. Tested with lguest (in virtio-next), which supports VIRTIO_PCI_CAP_PCI_CFG. Rusty Russell (2): virtio_pci: abstract all MMIO accesses. virtio: Introducing virtio_pci.no_mmio, the worst boot option in history. drivers/virtio/virtio_pci_common.c |

This should allow testing when QEMU gets VIRTIO_PCI_CAP_PCI_CFG support, but I'm pretty sure we should never allow these patches upstream. Tested with lguest (in virtio-next), which supports VIRTIO_PCI_CAP_PCI_CFG. Rusty Russell (2): virtio_pci: abstract all MMIO accesses. virtio: Introducing virtio_pci.no_mmio, the worst boot option in history. drivers/virtio/virtio_pci_common.c |

...eded by kmod-iwlegacy-0.0-2.el8_1.elrepo.x86_64 - nothing provides kernel(pci_release_regions) = 0xbf4a2a75 needed by kmod-iwlegacy-0.0-2.el8_1.elrepo.x86_64 - nothing provides kernel(pci_request_regions) = 0x9c656956 needed by kmod-iwlegacy-0.0-2.el8_1.elrepo.x86_64 - nothing provides kernel(pci_write_config_byte) = 0x21935607 needed by kmod-iwlegacy-0.0-2.el8_1.elrepo.x86_64 - nothing provides kernel(pci_read_config_word) = 0x3dc485cf needed by kmod-iwlegacy-0.0-2.el8_1.elrepo.x86_64 - nothing provides kernel(pci_disable_msi) = 0xc174fcd7 needed by kmod-iwlegacy-0.0-2.el8_1.elrepo.x86_64 - nothing p...