diff options
Diffstat (limited to 'hw/vfio/container-base.c')
| -rw-r--r-- | hw/vfio/container-base.c | 347 |
1 files changed, 0 insertions, 347 deletions
diff --git a/hw/vfio/container-base.c b/hw/vfio/container-base.c deleted file mode 100644 index 5630497..0000000 --- a/hw/vfio/container-base.c +++ /dev/null @@ -1,347 +0,0 @@ -/* - * VFIO BASE CONTAINER - * - * Copyright (C) 2023 Intel Corporation. - * Copyright Red Hat, Inc. 2023 - * - * Authors: Yi Liu <yi.l.liu@intel.com> - * Eric Auger <eric.auger@redhat.com> - * - * SPDX-License-Identifier: GPL-2.0-or-later - */ - -#include <sys/ioctl.h> -#include <linux/vfio.h> - -#include "qemu/osdep.h" -#include "system/tcg.h" -#include "system/ram_addr.h" -#include "qapi/error.h" -#include "qemu/error-report.h" -#include "hw/vfio/vfio-container-base.h" -#include "hw/vfio/vfio-device.h" /* vfio_device_reset_handler */ -#include "system/reset.h" -#include "vfio-helpers.h" - -#include "trace.h" - -static QLIST_HEAD(, VFIOAddressSpace) vfio_address_spaces = - QLIST_HEAD_INITIALIZER(vfio_address_spaces); - -VFIOAddressSpace *vfio_address_space_get(AddressSpace *as) -{ - VFIOAddressSpace *space; - - QLIST_FOREACH(space, &vfio_address_spaces, list) { - if (space->as == as) { - return space; - } - } - - /* No suitable VFIOAddressSpace, create a new one */ - space = g_malloc0(sizeof(*space)); - space->as = as; - QLIST_INIT(&space->containers); - - if (QLIST_EMPTY(&vfio_address_spaces)) { - qemu_register_reset(vfio_device_reset_handler, NULL); - } - - QLIST_INSERT_HEAD(&vfio_address_spaces, space, list); - - return space; -} - -void vfio_address_space_put(VFIOAddressSpace *space) -{ - if (!QLIST_EMPTY(&space->containers)) { - return; - } - - QLIST_REMOVE(space, list); - g_free(space); - - if (QLIST_EMPTY(&vfio_address_spaces)) { - qemu_unregister_reset(vfio_device_reset_handler, NULL); - } -} - -void vfio_address_space_insert(VFIOAddressSpace *space, - VFIOContainerBase *bcontainer) -{ - QLIST_INSERT_HEAD(&space->containers, bcontainer, next); - bcontainer->space = space; -} - -int vfio_container_dma_map(VFIOContainerBase *bcontainer, - hwaddr iova, ram_addr_t size, - void *vaddr, bool readonly, MemoryRegion *mr) -{ - VFIOIOMMUClass *vioc = VFIO_IOMMU_GET_CLASS(bcontainer); - RAMBlock *rb = mr->ram_block; - int mfd = rb ? qemu_ram_get_fd(rb) : -1; - - if (mfd >= 0 && vioc->dma_map_file) { - unsigned long start = vaddr - qemu_ram_get_host_addr(rb); - unsigned long offset = qemu_ram_get_fd_offset(rb); - - return vioc->dma_map_file(bcontainer, iova, size, mfd, start + offset, - readonly); - } - g_assert(vioc->dma_map); - return vioc->dma_map(bcontainer, iova, size, vaddr, readonly, mr); -} - -int vfio_container_dma_unmap(VFIOContainerBase *bcontainer, - hwaddr iova, ram_addr_t size, - IOMMUTLBEntry *iotlb, bool unmap_all) -{ - VFIOIOMMUClass *vioc = VFIO_IOMMU_GET_CLASS(bcontainer); - - g_assert(vioc->dma_unmap); - return vioc->dma_unmap(bcontainer, iova, size, iotlb, unmap_all); -} - -bool vfio_container_add_section_window(VFIOContainerBase *bcontainer, - MemoryRegionSection *section, - Error **errp) -{ - VFIOIOMMUClass *vioc = VFIO_IOMMU_GET_CLASS(bcontainer); - - if (!vioc->add_window) { - return true; - } - - return vioc->add_window(bcontainer, section, errp); -} - -void vfio_container_del_section_window(VFIOContainerBase *bcontainer, - MemoryRegionSection *section) -{ - VFIOIOMMUClass *vioc = VFIO_IOMMU_GET_CLASS(bcontainer); - - if (!vioc->del_window) { - return; - } - - return vioc->del_window(bcontainer, section); -} - -int vfio_container_set_dirty_page_tracking(VFIOContainerBase *bcontainer, - bool start, Error **errp) -{ - VFIOIOMMUClass *vioc = VFIO_IOMMU_GET_CLASS(bcontainer); - int ret; - - if (!bcontainer->dirty_pages_supported) { - return 0; - } - - g_assert(vioc->set_dirty_page_tracking); - if (bcontainer->dirty_pages_started == start) { - return 0; - } - - ret = vioc->set_dirty_page_tracking(bcontainer, start, errp); - if (!ret) { - bcontainer->dirty_pages_started = start; - } - - return ret; -} - -static bool vfio_container_devices_dirty_tracking_is_started( - const VFIOContainerBase *bcontainer) -{ - VFIODevice *vbasedev; - - QLIST_FOREACH(vbasedev, &bcontainer->device_list, container_next) { - if (!vbasedev->dirty_tracking) { - return false; - } - } - - return true; -} - -bool vfio_container_dirty_tracking_is_started( - const VFIOContainerBase *bcontainer) -{ - return vfio_container_devices_dirty_tracking_is_started(bcontainer) || - bcontainer->dirty_pages_started; -} - -bool vfio_container_devices_dirty_tracking_is_supported( - const VFIOContainerBase *bcontainer) -{ - VFIODevice *vbasedev; - - QLIST_FOREACH(vbasedev, &bcontainer->device_list, container_next) { - if (vbasedev->device_dirty_page_tracking == ON_OFF_AUTO_OFF) { - return false; - } - if (!vbasedev->dirty_pages_supported) { - return false; - } - } - - return true; -} - -static int vfio_device_dma_logging_report(VFIODevice *vbasedev, hwaddr iova, - hwaddr size, void *bitmap) -{ - uint64_t buf[DIV_ROUND_UP(sizeof(struct vfio_device_feature) + - sizeof(struct vfio_device_feature_dma_logging_report), - sizeof(uint64_t))] = {}; - struct vfio_device_feature *feature = (struct vfio_device_feature *)buf; - struct vfio_device_feature_dma_logging_report *report = - (struct vfio_device_feature_dma_logging_report *)feature->data; - - report->iova = iova; - report->length = size; - report->page_size = qemu_real_host_page_size(); - report->bitmap = (uintptr_t)bitmap; - - feature->argsz = sizeof(buf); - feature->flags = VFIO_DEVICE_FEATURE_GET | - VFIO_DEVICE_FEATURE_DMA_LOGGING_REPORT; - - return vbasedev->io_ops->device_feature(vbasedev, feature); -} - -static int vfio_container_iommu_query_dirty_bitmap(const VFIOContainerBase *bcontainer, - VFIOBitmap *vbmap, hwaddr iova, hwaddr size, Error **errp) -{ - VFIOIOMMUClass *vioc = VFIO_IOMMU_GET_CLASS(bcontainer); - - g_assert(vioc->query_dirty_bitmap); - return vioc->query_dirty_bitmap(bcontainer, vbmap, iova, size, - errp); -} - -static int vfio_container_devices_query_dirty_bitmap(const VFIOContainerBase *bcontainer, - VFIOBitmap *vbmap, hwaddr iova, hwaddr size, Error **errp) -{ - VFIODevice *vbasedev; - int ret; - - QLIST_FOREACH(vbasedev, &bcontainer->device_list, container_next) { - ret = vfio_device_dma_logging_report(vbasedev, iova, size, - vbmap->bitmap); - if (ret) { - error_setg_errno(errp, -ret, - "%s: Failed to get DMA logging report, iova: " - "0x%" HWADDR_PRIx ", size: 0x%" HWADDR_PRIx, - vbasedev->name, iova, size); - - return ret; - } - } - - return 0; -} - -int vfio_container_query_dirty_bitmap(const VFIOContainerBase *bcontainer, uint64_t iova, - uint64_t size, ram_addr_t ram_addr, Error **errp) -{ - bool all_device_dirty_tracking = - vfio_container_devices_dirty_tracking_is_supported(bcontainer); - uint64_t dirty_pages; - VFIOBitmap vbmap; - int ret; - - if (!bcontainer->dirty_pages_supported && !all_device_dirty_tracking) { - cpu_physical_memory_set_dirty_range(ram_addr, size, - tcg_enabled() ? DIRTY_CLIENTS_ALL : - DIRTY_CLIENTS_NOCODE); - return 0; - } - - ret = vfio_bitmap_alloc(&vbmap, size); - if (ret) { - error_setg_errno(errp, -ret, - "Failed to allocate dirty tracking bitmap"); - return ret; - } - - if (all_device_dirty_tracking) { - ret = vfio_container_devices_query_dirty_bitmap(bcontainer, &vbmap, iova, size, - errp); - } else { - ret = vfio_container_iommu_query_dirty_bitmap(bcontainer, &vbmap, iova, size, - errp); - } - - if (ret) { - goto out; - } - - dirty_pages = cpu_physical_memory_set_dirty_lebitmap(vbmap.bitmap, ram_addr, - vbmap.pages); - - trace_vfio_container_query_dirty_bitmap(iova, size, vbmap.size, ram_addr, - dirty_pages); -out: - g_free(vbmap.bitmap); - - return ret; -} - -static gpointer copy_iova_range(gconstpointer src, gpointer data) -{ - Range *source = (Range *)src; - Range *dest = g_new(Range, 1); - - range_set_bounds(dest, range_lob(source), range_upb(source)); - return dest; -} - -GList *vfio_container_get_iova_ranges(const VFIOContainerBase *bcontainer) -{ - assert(bcontainer); - return g_list_copy_deep(bcontainer->iova_ranges, copy_iova_range, NULL); -} - -static void vfio_container_instance_finalize(Object *obj) -{ - VFIOContainerBase *bcontainer = VFIO_IOMMU(obj); - VFIOGuestIOMMU *giommu, *tmp; - - QLIST_SAFE_REMOVE(bcontainer, next); - - QLIST_FOREACH_SAFE(giommu, &bcontainer->giommu_list, giommu_next, tmp) { - memory_region_unregister_iommu_notifier( - MEMORY_REGION(giommu->iommu_mr), &giommu->n); - QLIST_REMOVE(giommu, giommu_next); - g_free(giommu); - } - - g_list_free_full(bcontainer->iova_ranges, g_free); -} - -static void vfio_container_instance_init(Object *obj) -{ - VFIOContainerBase *bcontainer = VFIO_IOMMU(obj); - - bcontainer->error = NULL; - bcontainer->dirty_pages_supported = false; - bcontainer->dma_max_mappings = 0; - bcontainer->iova_ranges = NULL; - QLIST_INIT(&bcontainer->giommu_list); - QLIST_INIT(&bcontainer->vrdl_list); -} - -static const TypeInfo types[] = { - { - .name = TYPE_VFIO_IOMMU, - .parent = TYPE_OBJECT, - .instance_init = vfio_container_instance_init, - .instance_finalize = vfio_container_instance_finalize, - .instance_size = sizeof(VFIOContainerBase), - .class_size = sizeof(VFIOIOMMUClass), - .abstract = true, - }, -}; - -DEFINE_TYPES(types) |