tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
soc/bman: Add self-test for BMan driver
Add a self test for the DPAA 1.x Buffer Manager driver. This
test ensures that the driver can properly acquire and release
buffers using the BMan portal infrastructure.
Signed-off-by: Roy Pledge <roy.pledge@nxp.com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
authored by
Claudiu Manoil
and committed by
Scott Wood
97e0d385
c535e923
+259
+16
drivers/soc/fsl/qbman/Kconfig
+16
drivers/soc/fsl/qbman/Kconfig
···
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Compiles in additional checks, to sanity-check the drivers and
26
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any use of the exported API. Not recommended for performance.
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config FSL_BMAN_TEST
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tristate "BMan self-tests"
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help
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Compile the BMan self-test code. These tests will
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exercise the BMan APIs to confirm functionality
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of both the software drivers and hardware device.
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config FSL_BMAN_TEST_API
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bool "High-level API self-test"
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depends on FSL_BMAN_TEST
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default y
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help
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This requires the presence of cpu-affine portals, and performs
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high-level API testing with them (whichever portal(s) are affine
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to the cpu(s) the test executes on).
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endif # FSL_DPAA
+4
drivers/soc/fsl/qbman/Makefile
+4
drivers/soc/fsl/qbman/Makefile
+53
drivers/soc/fsl/qbman/bman_test.c
+53
drivers/soc/fsl/qbman/bman_test.c
···
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/* 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 "bman_test.h"
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MODULE_AUTHOR("Geoff Thorpe");
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_DESCRIPTION("BMan testing");
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static int test_init(void)
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{
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#ifdef CONFIG_FSL_BMAN_TEST_API
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int loop = 1;
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while (loop--)
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bman_test_api();
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#endif
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return 0;
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}
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static void test_exit(void)
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{
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}
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module_init(test_init);
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module_exit(test_exit);
+35
drivers/soc/fsl/qbman/bman_test.h
+35
drivers/soc/fsl/qbman/bman_test.h
···
1
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/* 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:
5
+
* * Redistributions of source code must retain the above copyright
6
+
* notice, this list of conditions and the following disclaimer.
7
+
* * Redistributions in binary form must reproduce the above copyright
8
+
* 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
21
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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 "bman_priv.h"
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+
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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void bman_test_api(void);
+151
drivers/soc/fsl/qbman/bman_test_api.c
+151
drivers/soc/fsl/qbman/bman_test_api.c
···
1
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/* 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
4
+
* modification, are permitted provided that the following conditions are met:
5
+
* * Redistributions of source code must retain the above copyright
6
+
* notice, this list of conditions and the following disclaimer.
7
+
* * Redistributions in binary form must reproduce the above copyright
8
+
* notice, this list of conditions and the following disclaimer in the
9
+
* 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
12
+
* 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
16
+
* Foundation, either version 2 of that License or (at your option) any
17
+
* 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
21
+
* 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
24
+
* (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 "bman_test.h"
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#define NUM_BUFS 93
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#define LOOPS 3
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#define BMAN_TOKEN_MASK 0x00FFFFFFFFFFLLU
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static struct bman_pool *pool;
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static struct bm_buffer bufs_in[NUM_BUFS] ____cacheline_aligned;
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static struct bm_buffer bufs_out[NUM_BUFS] ____cacheline_aligned;
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static int bufs_received;
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static void bufs_init(void)
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{
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int i;
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for (i = 0; i < NUM_BUFS; i++)
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bm_buffer_set64(&bufs_in[i], 0xfedc01234567LLU * i);
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bufs_received = 0;
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}
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static inline int bufs_cmp(const struct bm_buffer *a, const struct bm_buffer *b)
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{
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if (bman_ip_rev == BMAN_REV20 || bman_ip_rev == BMAN_REV21) {
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/*
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* On SoCs with BMan revison 2.0, BMan only respects the 40
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* LS-bits of buffer addresses, masking off the upper 8-bits on
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* release commands. The API provides for 48-bit addresses
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* because some SoCs support all 48-bits. When generating
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* garbage addresses for testing, we either need to zero the
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* upper 8-bits when releasing to BMan (otherwise we'll be
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* disappointed when the buffers we acquire back from BMan
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* don't match), or we need to mask the upper 8-bits off when
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* comparing. We do the latter.
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*/
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if ((bm_buffer_get64(a) & BMAN_TOKEN_MASK) <
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(bm_buffer_get64(b) & BMAN_TOKEN_MASK))
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return -1;
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if ((bm_buffer_get64(a) & BMAN_TOKEN_MASK) >
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(bm_buffer_get64(b) & BMAN_TOKEN_MASK))
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return 1;
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} else {
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if (bm_buffer_get64(a) < bm_buffer_get64(b))
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return -1;
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if (bm_buffer_get64(a) > bm_buffer_get64(b))
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return 1;
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}
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return 0;
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}
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static void bufs_confirm(void)
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{
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int i, j;
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for (i = 0; i < NUM_BUFS; i++) {
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int matches = 0;
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for (j = 0; j < NUM_BUFS; j++)
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if (!bufs_cmp(&bufs_in[i], &bufs_out[j]))
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matches++;
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WARN_ON(matches != 1);
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}
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}
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/* test */
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void bman_test_api(void)
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{
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int i, loops = LOOPS;
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bufs_init();
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pr_info("%s(): Starting\n", __func__);
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pool = bman_new_pool();
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if (!pool) {
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pr_crit("bman_new_pool() failed\n");
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goto failed;
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}
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/* Release buffers */
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do_loop:
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i = 0;
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while (i < NUM_BUFS) {
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int num = 8;
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if (i + num > NUM_BUFS)
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num = NUM_BUFS - i;
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if (bman_release(pool, bufs_in + i, num)) {
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pr_crit("bman_release() failed\n");
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goto failed;
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}
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i += num;
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}
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/* Acquire buffers */
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while (i > 0) {
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int tmp, num = 8;
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if (num > i)
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num = i;
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tmp = bman_acquire(pool, bufs_out + i - num, num);
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WARN_ON(tmp != num);
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i -= num;
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}
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i = bman_acquire(pool, NULL, 1);
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WARN_ON(i > 0);
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bufs_confirm();
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if (--loops)
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goto do_loop;
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/* Clean up */
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bman_free_pool(pool);
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pr_info("%s(): Finished\n", __func__);
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return;
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failed:
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WARN_ON(1);
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}