/* Copyright 2008 - 2016 Freescale Semiconductor, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * Neither the name of Freescale Semiconductor nor the * names of its contributors may be used to endorse or promote products * derived from this software without specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") as published by the Free Software * Foundation, either version 2 of that License or (at your option) any * later version. * * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* Helpers for initialising and "incrementing" a frame descriptor */ staticvoid fd_init(struct qm_fd *fd)
{
qm_fd_addr_set64(fd, 0xabdeadbeefLLU);
qm_fd_set_contig_big(fd, 0x0000ffff);
fd->cmd = cpu_to_be32(0xfeedf00d);
}
staticvoid fd_inc(struct qm_fd *fd)
{
u64 t = qm_fd_addr_get64(fd); int z = t >> 40; unsignedint len, off; enum qm_fd_format fmt;
t <<= 1; if (z)
t |= 1;
qm_fd_addr_set64(fd, t);
fmt = qm_fd_get_format(fd);
off = qm_fd_get_offset(fd);
len = qm_fd_get_length(fd);
len--;
qm_fd_set_param(fd, fmt, off, len);
be32_add_cpu(&fd->cmd, 1);
}
/* The only part of the 'fd' we can't memcmp() is the ppid */ staticbool fd_neq(conststruct qm_fd *a, conststruct qm_fd *b)
{ bool neq = qm_fd_addr_get64(a) != qm_fd_addr_get64(b);
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