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#include <machine/rtems-bsd-kernel-space.h>
#include <rtems/bsd/local/opt_dpaa.h>
/* Copyright 2013 - 2015 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.
*/
#include "qman_priv.h"
#include <linux/time.h>
static int __init early_qman_init(void)
{
struct device_node *dn;
u32 is_portal_available;
qman_init();
is_portal_available = 0;
for_each_compatible_node(dn, NULL, "fsl,qman-portal") {
if (of_device_is_available(dn)) {
is_portal_available = 1;
break;
}
}
if (!qman_have_ccsr() && is_portal_available) {
struct qman_fq fq = {.fqid = 1};
struct qm_mcr_queryfq_np np;
int err, retry = CONFIG_FSL_QMAN_INIT_TIMEOUT;
struct timespec nowts, diffts, startts = current_kernel_time();
/* Loop while querying given fqid succeeds or time out */
while (1) {
err = qman_query_fq_np(&fq, &np);
if (!err) {
/* success, control-plane has configured QMan */
break;
} else if (err != -ERANGE) {
pr_err("I/O error, continuing anyway\n");
break;
}
nowts = current_kernel_time();
diffts = timespec_sub(nowts, startts);
if (diffts.tv_sec > 0) {
if (!retry--) {
pr_err("Time out, control-plane dead?\n");
break;
}
pr_warn("Polling for the control-plane (%d)\n",
retry);
}
}
}
qman_resource_init();
return 0;
}
subsys_initcall(early_qman_init);
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