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Diffstat (limited to 'linux/drivers/soc/fsl/qbman/qman_driver.c')
-rw-r--r--linux/drivers/soc/fsl/qbman/qman_driver.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/linux/drivers/soc/fsl/qbman/qman_driver.c b/linux/drivers/soc/fsl/qbman/qman_driver.c
new file mode 100644
index 00000000..6923504e
--- /dev/null
+++ b/linux/drivers/soc/fsl/qbman/qman_driver.c
@@ -0,0 +1,87 @@
+#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);