Function vfio_map_dev_obj

dpdk/drivers/crypto/bcmfs/bcmfs_vfio.c:17–56

#ifdef VFIO_PRESENT
static int
vfio_map_dev_obj(const char *path, const char *dev_obj,
		 uint32_t *size, void **addr, int *dev_fd)
{
	int32_t ret;
	struct vfio_group_status status = { .argsz = sizeof(status) };

	struct vfio_device_info d_info = { .argsz = sizeof(d_info) };
	struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };

	ret = rte_vfio_setup_device(path, dev_obj, dev_fd, &d_info);
	if (ret) {
		BCMFS_LOG(ERR, "VFIO Setting for device failed");
		return ret;
	}

	/* getting device region info*/
	ret = ioctl(*dev_fd, VFIO_DEVICE_GET_REGION_INFO, &reg_info);
	if (ret < 0) {
		BCMFS_LOG(ERR, "Error in VFIO getting REGION_INFO");
		goto map_failed;
	}

	*addr = mmap(NULL, reg_info.size,
		     PROT_WRITE | PROT_READ, MAP_SHARED,
		     *dev_fd, reg_info.offset);
	if (*addr == MAP_FAILED) {
		BCMFS_LOG(ERR, "Error mapping region (errno = %d)", errno);
		ret = errno;
		goto map_failed;
	}
	*size = reg_info.size;

	return 0;

map_failed:
	rte_vfio_release_device(path, dev_obj, *dev_fd);

	return ret;
}

int
bcmfs_attach_vfio(struct bcmfs_device *dev)