248 lines
6.7 KiB
C
248 lines
6.7 KiB
C
/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Freescale Semiconductor nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* ALTERNATIVELY, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") as published by the Free Software
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* Foundation, either version 2 of that License or (at your option) any
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* later version.
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*
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* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "qman_test.h"
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#define CGR_ID 27
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#define POOL_ID 2
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#define FQ_FLAGS QMAN_FQ_FLAG_DYNAMIC_FQID
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#define NUM_ENQUEUES 10
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#define NUM_PARTIAL 4
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#define PORTAL_SDQCR (QM_SDQCR_SOURCE_CHANNELS | \
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QM_SDQCR_TYPE_PRIO_QOS | \
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QM_SDQCR_TOKEN_SET(0x98) | \
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QM_SDQCR_CHANNELS_DEDICATED | \
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QM_SDQCR_CHANNELS_POOL(POOL_ID))
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#define PORTAL_OPAQUE ((void *)0xf00dbeef)
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#define VDQCR_FLAGS (QMAN_VOLATILE_FLAG_WAIT | QMAN_VOLATILE_FLAG_FINISH)
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static enum qman_cb_dqrr_result cb_dqrr(struct qman_portal *,
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struct qman_fq *,
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const struct qm_dqrr_entry *,
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bool sched_napi);
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static void cb_ern(struct qman_portal *, struct qman_fq *,
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const union qm_mr_entry *);
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static void cb_fqs(struct qman_portal *, struct qman_fq *,
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const union qm_mr_entry *);
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static struct qm_fd fd, fd_dq;
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static struct qman_fq fq_base = {
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.cb.dqrr = cb_dqrr,
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.cb.ern = cb_ern,
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.cb.fqs = cb_fqs
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};
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static DECLARE_WAIT_QUEUE_HEAD(waitqueue);
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static int retire_complete, sdqcr_complete;
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/* Helpers for initialising and "incrementing" a frame descriptor */
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static void fd_init(struct qm_fd *fd)
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{
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qm_fd_addr_set64(fd, 0xabdeadbeefLLU);
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qm_fd_set_contig_big(fd, 0x0000ffff);
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fd->cmd = cpu_to_be32(0xfeedf00d);
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}
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static void fd_inc(struct qm_fd *fd)
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{
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u64 t = qm_fd_addr_get64(fd);
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int z = t >> 40;
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unsigned int len, off;
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enum qm_fd_format fmt;
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t <<= 1;
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if (z)
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t |= 1;
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qm_fd_addr_set64(fd, t);
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fmt = qm_fd_get_format(fd);
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off = qm_fd_get_offset(fd);
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len = qm_fd_get_length(fd);
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len--;
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qm_fd_set_param(fd, fmt, off, len);
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be32_add_cpu(&fd->cmd, 1);
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}
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/* The only part of the 'fd' we can't memcmp() is the ppid */
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static bool fd_neq(const struct qm_fd *a, const struct qm_fd *b)
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{
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bool neq = qm_fd_addr_get64(a) != qm_fd_addr_get64(b);
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neq |= qm_fd_get_format(a) != qm_fd_get_format(b);
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neq |= a->cfg != b->cfg;
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neq |= a->cmd != b->cmd;
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return neq;
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}
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/* test */
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static int do_enqueues(struct qman_fq *fq)
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{
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unsigned int loop;
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int err = 0;
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for (loop = 0; loop < NUM_ENQUEUES; loop++) {
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if (qman_enqueue(fq, &fd)) {
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pr_crit("qman_enqueue() failed\n");
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err = -EIO;
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}
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fd_inc(&fd);
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}
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return err;
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}
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int qman_test_api(void)
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{
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unsigned int flags, frmcnt;
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int err;
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struct qman_fq *fq = &fq_base;
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pr_info("%s(): Starting\n", __func__);
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fd_init(&fd);
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fd_init(&fd_dq);
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/* Initialise (parked) FQ */
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err = qman_create_fq(0, FQ_FLAGS, fq);
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if (err) {
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pr_crit("qman_create_fq() failed\n");
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goto failed;
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}
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err = qman_init_fq(fq, QMAN_INITFQ_FLAG_LOCAL, NULL);
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if (err) {
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pr_crit("qman_init_fq() failed\n");
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goto failed;
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}
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/* Do enqueues + VDQCR, twice. (Parked FQ) */
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err = do_enqueues(fq);
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if (err)
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goto failed;
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pr_info("VDQCR (till-empty);\n");
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frmcnt = QM_VDQCR_NUMFRAMES_TILLEMPTY;
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err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt);
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if (err) {
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pr_crit("qman_volatile_dequeue() failed\n");
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goto failed;
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}
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err = do_enqueues(fq);
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if (err)
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goto failed;
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pr_info("VDQCR (%d of %d);\n", NUM_PARTIAL, NUM_ENQUEUES);
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frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_PARTIAL);
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err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt);
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if (err) {
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pr_crit("qman_volatile_dequeue() failed\n");
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goto failed;
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}
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pr_info("VDQCR (%d of %d);\n", NUM_ENQUEUES - NUM_PARTIAL,
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NUM_ENQUEUES);
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frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_ENQUEUES - NUM_PARTIAL);
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err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt);
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if (err) {
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pr_err("qman_volatile_dequeue() failed\n");
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goto failed;
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}
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err = do_enqueues(fq);
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if (err)
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goto failed;
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pr_info("scheduled dequeue (till-empty)\n");
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err = qman_schedule_fq(fq);
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if (err) {
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pr_crit("qman_schedule_fq() failed\n");
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goto failed;
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}
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wait_event(waitqueue, sdqcr_complete);
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/* Retire and OOS the FQ */
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err = qman_retire_fq(fq, &flags);
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if (err < 0) {
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pr_crit("qman_retire_fq() failed\n");
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goto failed;
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}
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wait_event(waitqueue, retire_complete);
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if (flags & QMAN_FQ_STATE_BLOCKOOS) {
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err = -EIO;
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pr_crit("leaking frames\n");
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goto failed;
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}
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err = qman_oos_fq(fq);
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if (err) {
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pr_crit("qman_oos_fq() failed\n");
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goto failed;
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}
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qman_destroy_fq(fq);
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pr_info("%s(): Finished\n", __func__);
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return 0;
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failed:
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WARN_ON(1);
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return err;
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}
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static enum qman_cb_dqrr_result cb_dqrr(struct qman_portal *p,
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struct qman_fq *fq,
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const struct qm_dqrr_entry *dq,
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bool sched_napi)
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{
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if (WARN_ON(fd_neq(&fd_dq, &dq->fd))) {
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pr_err("BADNESS: dequeued frame doesn't match;\n");
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return qman_cb_dqrr_consume;
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}
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fd_inc(&fd_dq);
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if (!(dq->stat & QM_DQRR_STAT_UNSCHEDULED) && !fd_neq(&fd_dq, &fd)) {
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sdqcr_complete = 1;
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wake_up(&waitqueue);
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}
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return qman_cb_dqrr_consume;
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}
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static void cb_ern(struct qman_portal *p, struct qman_fq *fq,
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const union qm_mr_entry *msg)
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{
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pr_crit("cb_ern() unimplemented");
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WARN_ON(1);
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}
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static void cb_fqs(struct qman_portal *p, struct qman_fq *fq,
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const union qm_mr_entry *msg)
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{
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u8 verb = (msg->verb & QM_MR_VERB_TYPE_MASK);
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if ((verb != QM_MR_VERB_FQRN) && (verb != QM_MR_VERB_FQRNI)) {
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pr_crit("unexpected FQS message");
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WARN_ON(1);
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return;
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}
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pr_info("Retirement message received\n");
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retire_complete = 1;
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wake_up(&waitqueue);
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}
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