hw/vfio/helpers.c

11  * the COPYING file in the top-level directory.
13  * Based on qemu-kvm device-assignment:
19  *  Copyright (C) 2008, IBM, Muli Ben-Yehuda (muli@il.ibm.com)
26 #include "hw/vfio/vfio-device.h"
29 #include "vfio-helpers.h"
33     vbmap->pages = REAL_HOST_PAGE_ALIGN(size) / qemu_real_host_page_size();
34     vbmap->size = ROUND_UP(vbmap->pages, sizeof(__u64) * BITS_PER_BYTE) /
36     vbmap->bitmap = g_try_malloc0(vbmap->size);
37     if (!vbmap->bitmap) {
38         return -ENOMEM;
49     for (hdr = ptr + cap_offset; hdr != ptr; hdr = ptr + hdr->next) {
50         if (hdr->id == id) {
61     if (!(info->flags & VFIO_REGION_INFO_FLAG_CAPS)) {
65     return vfio_get_cap((void *)info, info->cap_offset, id);
71     if (!(info->flags & VFIO_DEVICE_FLAGS_CAPS)) {
75     return vfio_get_cap((void *)info, info->cap_offset, id);
81     if (!(info->flags & VFIO_IOMMU_INFO_CAPS)) {
85     return vfio_get_cap((void *)info, info->cap_offset, id);
103         *avail = cap->avail;
115  * we'll re-use it should another vfio device be attached before then.
117 int vfio_kvm_device_fd = -1;
124     if (vfio_kvm_device_fd != -1) {
126         vfio_kvm_device_fd = -1;
151             return -errno;
160         return -errno;
177         return -EINVAL;
183         return -errno;
197     info->argsz = argsz;
204     if (info->argsz > argsz) {
205         argsz = info->argsz;
217      * non-iterables loading phase) is required for ARM64 due to this platform