1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(C) 2020 Broadcom.
12 #include "bcmfs_device.h"
13 #include "bcmfs_logs.h"
14 #include "bcmfs_vfio.h"
18 vfio_map_dev_obj(const char *path, const char *dev_obj,
19 uint32_t *size, void **addr, int *dev_fd)
22 struct vfio_group_status status = { .argsz = sizeof(status) };
24 struct vfio_device_info d_info = { .argsz = sizeof(d_info) };
25 struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };
27 ret = rte_vfio_setup_device(path, dev_obj, dev_fd, &d_info);
29 BCMFS_LOG(ERR, "VFIO Setting for device failed");
33 /* getting device region info*/
34 ret = ioctl(*dev_fd, VFIO_DEVICE_GET_REGION_INFO, ®_info);
36 BCMFS_LOG(ERR, "Error in VFIO getting REGION_INFO");
40 *addr = mmap(NULL, reg_info.size,
41 PROT_WRITE | PROT_READ, MAP_SHARED,
42 *dev_fd, reg_info.offset);
43 if (*addr == MAP_FAILED) {
44 BCMFS_LOG(ERR, "Error mapping region (errno = %d)", errno);
48 *size = reg_info.size;
53 rte_vfio_release_device(path, dev_obj, *dev_fd);
59 bcmfs_attach_vfio(struct bcmfs_device *dev)
66 ret = vfio_map_dev_obj(dev->dirname, dev->name,
67 &size, &v_addr, &vfio_dev_fd);
71 dev->mmap_size = size;
72 dev->mmap_addr = v_addr;
73 dev->vfio_dev_fd = vfio_dev_fd;
79 bcmfs_release_vfio(struct bcmfs_device *dev)
87 munmap(dev->mmap_addr, dev->mmap_size);
88 /* release the device */
89 ret = rte_vfio_release_device(dev->dirname, dev->name,
92 BCMFS_LOG(ERR, "cannot release device");
98 bcmfs_attach_vfio(struct bcmfs_device *dev __rte_unused)
104 bcmfs_release_vfio(struct bcmfs_device *dev __rte_unused)