Release 4.9 drivers/soc/fsl/qbman/qman_test_api.c
/* 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.
*/
#include "qman_test.h"
#define CGR_ID 27
#define POOL_ID 2
#define FQ_FLAGS QMAN_FQ_FLAG_DYNAMIC_FQID
#define NUM_ENQUEUES 10
#define NUM_PARTIAL 4
#define PORTAL_SDQCR (QM_SDQCR_SOURCE_CHANNELS | \
QM_SDQCR_TYPE_PRIO_QOS | \
QM_SDQCR_TOKEN_SET(0x98) | \
QM_SDQCR_CHANNELS_DEDICATED | \
QM_SDQCR_CHANNELS_POOL(POOL_ID))
#define PORTAL_OPAQUE ((void *)0xf00dbeef)
#define VDQCR_FLAGS (QMAN_VOLATILE_FLAG_WAIT | QMAN_VOLATILE_FLAG_FINISH)
static enum qman_cb_dqrr_result cb_dqrr(struct qman_portal *,
struct qman_fq *,
const struct qm_dqrr_entry *);
static void cb_ern(struct qman_portal *, struct qman_fq *,
const union qm_mr_entry *);
static void cb_fqs(struct qman_portal *, struct qman_fq *,
const union qm_mr_entry *);
static struct qm_fd fd, fd_dq;
static struct qman_fq fq_base = {
.cb.dqrr = cb_dqrr,
.cb.ern = cb_ern,
.cb.fqs = cb_fqs
};
static DECLARE_WAIT_QUEUE_HEAD(waitqueue);
static int retire_complete, sdqcr_complete;
/* Helpers for initialising and "incrementing" a frame descriptor */
static void fd_init(struct qm_fd *fd)
{
qm_fd_addr_set64(fd, 0xabdeadbeefLLU);
qm_fd_set_contig_big(fd, 0x0000ffff);
fd->cmd = 0xfeedf00d;
}
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static void fd_inc(struct qm_fd *fd)
{
u64 t = qm_fd_addr_get64(fd);
int z = t >> 40;
unsigned int 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);
fd->cmd++;
}
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/* The only part of the 'fd' we can't memcmp() is the ppid */
static int fd_cmp(const struct qm_fd *a, const struct qm_fd *b)
{
int r = (qm_fd_addr_get64(a) == qm_fd_addr_get64(b)) ? 0 : -1;
if (!r) {
enum qm_fd_format fmt_a, fmt_b;
fmt_a = qm_fd_get_format(a);
fmt_b = qm_fd_get_format(b);
r = fmt_a - fmt_b;
}
if (!r)
r = a->cfg - b->cfg;
if (!r)
r = a->cmd - b->cmd;
return r;
}
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/* test */
static int do_enqueues(struct qman_fq *fq)
{
unsigned int loop;
int err = 0;
for (loop = 0; loop < NUM_ENQUEUES; loop++) {
if (qman_enqueue(fq, &fd)) {
pr_crit("qman_enqueue() failed\n");
err = -EIO;
}
fd_inc(&fd);
}
return err;
}
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int qman_test_api(void)
{
unsigned int flags, frmcnt;
int err;
struct qman_fq *fq = &fq_base;
pr_info("%s(): Starting\n", __func__);
fd_init(&fd);
fd_init(&fd_dq);
/* Initialise (parked) FQ */
err = qman_create_fq(0, FQ_FLAGS, fq);
if (err) {
pr_crit("qman_create_fq() failed\n");
goto failed;
}
err = qman_init_fq(fq, QMAN_INITFQ_FLAG_LOCAL, NULL);
if (err) {
pr_crit("qman_init_fq() failed\n");
goto failed;
}
/* Do enqueues + VDQCR, twice. (Parked FQ) */
err = do_enqueues(fq);
if (err)
goto failed;
pr_info("VDQCR (till-empty);\n");
frmcnt = QM_VDQCR_NUMFRAMES_TILLEMPTY;
err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt);
if (err) {
pr_crit("qman_volatile_dequeue() failed\n");
goto failed;
}
err = do_enqueues(fq);
if (err)
goto failed;
pr_info("VDQCR (%d of %d);\n", NUM_PARTIAL, NUM_ENQUEUES);
frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_PARTIAL);
err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt);
if (err) {
pr_crit("qman_volatile_dequeue() failed\n");
goto failed;
}
pr_info("VDQCR (%d of %d);\n", NUM_ENQUEUES - NUM_PARTIAL,
NUM_ENQUEUES);
frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_ENQUEUES - NUM_PARTIAL);
err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt);
if (err) {
pr_err("qman_volatile_dequeue() failed\n");
goto failed;
}
err = do_enqueues(fq);
if (err)
goto failed;
pr_info("scheduled dequeue (till-empty)\n");
err = qman_schedule_fq(fq);
if (err) {
pr_crit("qman_schedule_fq() failed\n");
goto failed;
}
wait_event(waitqueue, sdqcr_complete);
/* Retire and OOS the FQ */
err = qman_retire_fq(fq, &flags);
if (err < 0) {
pr_crit("qman_retire_fq() failed\n");
goto failed;
}
wait_event(waitqueue, retire_complete);
if (flags & QMAN_FQ_STATE_BLOCKOOS) {
err = -EIO;
pr_crit("leaking frames\n");
goto failed;
}
err = qman_oos_fq(fq);
if (err) {
pr_crit("qman_oos_fq() failed\n");
goto failed;
}
qman_destroy_fq(fq);
pr_info("%s(): Finished\n", __func__);
return 0;
failed:
WARN_ON(1);
return err;
}
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static enum qman_cb_dqrr_result cb_dqrr(struct qman_portal *p,
struct qman_fq *fq,
const struct qm_dqrr_entry *dq)
{
if (WARN_ON(fd_cmp(&fd_dq, &dq->fd))) {
pr_err("BADNESS: dequeued frame doesn't match;\n");
return qman_cb_dqrr_consume;
}
fd_inc(&fd_dq);
if (!(dq->stat & QM_DQRR_STAT_UNSCHEDULED) && !fd_cmp(&fd_dq, &fd)) {
sdqcr_complete = 1;
wake_up(&waitqueue);
}
return qman_cb_dqrr_consume;
}
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static void cb_ern(struct qman_portal *p, struct qman_fq *fq,
const union qm_mr_entry *msg)
{
pr_crit("cb_ern() unimplemented");
WARN_ON(1);
}
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static void cb_fqs(struct qman_portal *p, struct qman_fq *fq,
const union qm_mr_entry *msg)
{
u8 verb = (msg->verb & QM_MR_VERB_TYPE_MASK);
if ((verb != QM_MR_VERB_FQRN) && (verb != QM_MR_VERB_FQRNI)) {
pr_crit("unexpected FQS message");
WARN_ON(1);
return;
}
pr_info("Retirement message received\n");
retire_complete = 1;
wake_up(&waitqueue);
}
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