soc/qman: Add self-test for QMan driver (de775623) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/soc/fsl/qbman/Kconfig

+23 −0

Original line number	Diff line number	Diff line
		@@ -41,4 +41,27 @@ config FSL_BMAN_TEST_API
		high-level API testing with them (whichever portal(s) are affine
		to the cpu(s) the test executes on).

		config FSL_QMAN_TEST
		tristate "QMan self-tests"
		help
		Compile self-test code for QMan.

		config FSL_QMAN_TEST_API
		bool "QMan high-level self-test"
		depends on FSL_QMAN_TEST
		default y
		help
		This requires the presence of cpu-affine portals, and performs
		high-level API testing with them (whichever portal(s) are affine to
		the cpu(s) the test executes on).

		config FSL_QMAN_TEST_STASH
		bool "QMan 'hot potato' data-stashing self-test"
		depends on FSL_QMAN_TEST
		default y
		help
		This performs a "hot potato" style test enqueuing/dequeuing a frame
		across a series of FQs scheduled to different portals (and cpus), with
		DQRR, data and context stashing always on.

		endif # FSL_DPAA

drivers/soc/fsl/qbman/Makefile

+5 −0

Original line number	Diff line number	Diff line
		@@ -5,3 +5,8 @@ obj-$(CONFIG_FSL_DPAA) += bman_ccsr.o qman_ccsr.o \
		obj-$(CONFIG_FSL_BMAN_TEST) += bman-test.o
		bman-test-y = bman_test.o
		bman-test-$(CONFIG_FSL_BMAN_TEST_API) += bman_test_api.o

		obj-$(CONFIG_FSL_QMAN_TEST) += qman-test.o
		qman-test-y = qman_test.o
		qman-test-$(CONFIG_FSL_QMAN_TEST_API) += qman_test_api.o
		qman-test-$(CONFIG_FSL_QMAN_TEST_STASH) += qman_test_stash.o

drivers/soc/fsl/qbman/qman_test.c

0 → 100644

+62 −0

Original line number	Diff line number	Diff line
		/* 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"

		MODULE_AUTHOR("Geoff Thorpe");
		MODULE_LICENSE("Dual BSD/GPL");
		MODULE_DESCRIPTION("QMan testing");

		static int test_init(void)
		{
		int loop = 1;
		int err = 0;

		while (loop--) {
		#ifdef CONFIG_FSL_QMAN_TEST_STASH
		err = qman_test_stash();
		if (err)
		break;
		#endif
		#ifdef CONFIG_FSL_QMAN_TEST_API
		err = qman_test_api();
		if (err)
		break;
		#endif
		}
		return err;
		}

		static void test_exit(void)
		{
		}

		module_init(test_init);
		module_exit(test_exit);

drivers/soc/fsl/qbman/qman_test.h

0 → 100644

+36 −0

Original line number	Diff line number	Diff line
		/* 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_priv.h"

		#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

		int qman_test_stash(void);
		int qman_test_api(void);

drivers/soc/fsl/qbman/qman_test_api.c

0 → 100644

+252 −0

Original line number	Diff line number	Diff line
		/* 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;
		}

		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++;
		}

		/* 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;
		}

		/* 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;
		}

		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;
		}

		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;
		}

		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);
		}

		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);
		}