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Message-ID: <1474556652-5044-4-git-send-email-claudiu.manoil@nxp.com>
Date: Thu, 22 Sep 2016 18:04:10 +0300
From: Claudiu Manoil <claudiu.manoil@....com>
To: <linuxppc-dev@...ts.ozlabs.org>, <scottwood@...escale.com>
CC: <linux-kernel@...r.kernel.org>, Scott Wood <oss@...error.net>,
Roy Pledge <roy.pledge@....com>
Subject: [PATCH v2 3/5] 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@....com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@....com>
---
v2: none
drivers/soc/fsl/qbman/Kconfig | 16 ++++
drivers/soc/fsl/qbman/Makefile | 4 +
drivers/soc/fsl/qbman/bman_test.c | 53 ++++++++++++
drivers/soc/fsl/qbman/bman_test.h | 35 ++++++++
drivers/soc/fsl/qbman/bman_test_api.c | 151 ++++++++++++++++++++++++++++++++++
5 files changed, 259 insertions(+)
create mode 100644 drivers/soc/fsl/qbman/bman_test.c
create mode 100644 drivers/soc/fsl/qbman/bman_test.h
create mode 100644 drivers/soc/fsl/qbman/bman_test_api.c
diff --git a/drivers/soc/fsl/qbman/Kconfig b/drivers/soc/fsl/qbman/Kconfig
index 8f2df64..e6da6a2 100644
--- a/drivers/soc/fsl/qbman/Kconfig
+++ b/drivers/soc/fsl/qbman/Kconfig
@@ -25,4 +25,20 @@ config FSL_DPAA_CHECKING
Compiles in additional checks, to sanity-check the drivers and
any use of the exported API. Not recommended for performance.
+config FSL_BMAN_TEST
+ tristate "BMan self-tests"
+ help
+ Compile the BMan self-test code. These tests will
+ exercise the BMan APIs to confirm functionality
+ of both the software drivers and hardware device.
+
+config FSL_BMAN_TEST_API
+ bool "High-level API self-test"
+ depends on FSL_BMAN_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).
+
endif # FSL_DPAA
diff --git a/drivers/soc/fsl/qbman/Makefile b/drivers/soc/fsl/qbman/Makefile
index 6e0ee30..714dd97 100644
--- a/drivers/soc/fsl/qbman/Makefile
+++ b/drivers/soc/fsl/qbman/Makefile
@@ -1,3 +1,7 @@
obj-$(CONFIG_FSL_DPAA) += bman_ccsr.o qman_ccsr.o \
bman_portal.o qman_portal.o \
bman.o qman.o
+
+obj-$(CONFIG_FSL_BMAN_TEST) += bman-test.o
+bman-test-y = bman_test.o
+bman-test-$(CONFIG_FSL_BMAN_TEST_API) += bman_test_api.o
diff --git a/drivers/soc/fsl/qbman/bman_test.c b/drivers/soc/fsl/qbman/bman_test.c
new file mode 100644
index 0000000..09b1c96
--- /dev/null
+++ b/drivers/soc/fsl/qbman/bman_test.c
@@ -0,0 +1,53 @@
+/* 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 "bman_test.h"
+
+MODULE_AUTHOR("Geoff Thorpe");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("BMan testing");
+
+static int test_init(void)
+{
+#ifdef CONFIG_FSL_BMAN_TEST_API
+ int loop = 1;
+
+ while (loop--)
+ bman_test_api();
+#endif
+ return 0;
+}
+
+static void test_exit(void)
+{
+}
+
+module_init(test_init);
+module_exit(test_exit);
diff --git a/drivers/soc/fsl/qbman/bman_test.h b/drivers/soc/fsl/qbman/bman_test.h
new file mode 100644
index 0000000..037ed34
--- /dev/null
+++ b/drivers/soc/fsl/qbman/bman_test.h
@@ -0,0 +1,35 @@
+/* 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 "bman_priv.h"
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+void bman_test_api(void);
diff --git a/drivers/soc/fsl/qbman/bman_test_api.c b/drivers/soc/fsl/qbman/bman_test_api.c
new file mode 100644
index 0000000..6f6bdd1
--- /dev/null
+++ b/drivers/soc/fsl/qbman/bman_test_api.c
@@ -0,0 +1,151 @@
+/* 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 "bman_test.h"
+
+#define NUM_BUFS 93
+#define LOOPS 3
+#define BMAN_TOKEN_MASK 0x00FFFFFFFFFFLLU
+
+static struct bman_pool *pool;
+static struct bm_buffer bufs_in[NUM_BUFS] ____cacheline_aligned;
+static struct bm_buffer bufs_out[NUM_BUFS] ____cacheline_aligned;
+static int bufs_received;
+
+static void bufs_init(void)
+{
+ int i;
+
+ for (i = 0; i < NUM_BUFS; i++)
+ bm_buffer_set64(&bufs_in[i], 0xfedc01234567LLU * i);
+ bufs_received = 0;
+}
+
+static inline int bufs_cmp(const struct bm_buffer *a, const struct bm_buffer *b)
+{
+ if (bman_ip_rev == BMAN_REV20 || bman_ip_rev == BMAN_REV21) {
+
+ /*
+ * On SoCs with BMan revison 2.0, BMan only respects the 40
+ * LS-bits of buffer addresses, masking off the upper 8-bits on
+ * release commands. The API provides for 48-bit addresses
+ * because some SoCs support all 48-bits. When generating
+ * garbage addresses for testing, we either need to zero the
+ * upper 8-bits when releasing to BMan (otherwise we'll be
+ * disappointed when the buffers we acquire back from BMan
+ * don't match), or we need to mask the upper 8-bits off when
+ * comparing. We do the latter.
+ */
+ if ((bm_buffer_get64(a) & BMAN_TOKEN_MASK) <
+ (bm_buffer_get64(b) & BMAN_TOKEN_MASK))
+ return -1;
+ if ((bm_buffer_get64(a) & BMAN_TOKEN_MASK) >
+ (bm_buffer_get64(b) & BMAN_TOKEN_MASK))
+ return 1;
+ } else {
+ if (bm_buffer_get64(a) < bm_buffer_get64(b))
+ return -1;
+ if (bm_buffer_get64(a) > bm_buffer_get64(b))
+ return 1;
+ }
+
+ return 0;
+}
+
+static void bufs_confirm(void)
+{
+ int i, j;
+
+ for (i = 0; i < NUM_BUFS; i++) {
+ int matches = 0;
+
+ for (j = 0; j < NUM_BUFS; j++)
+ if (!bufs_cmp(&bufs_in[i], &bufs_out[j]))
+ matches++;
+ WARN_ON(matches != 1);
+ }
+}
+
+/* test */
+void bman_test_api(void)
+{
+ int i, loops = LOOPS;
+
+ bufs_init();
+
+ pr_info("%s(): Starting\n", __func__);
+
+ pool = bman_new_pool();
+ if (!pool) {
+ pr_crit("bman_new_pool() failed\n");
+ goto failed;
+ }
+
+ /* Release buffers */
+do_loop:
+ i = 0;
+ while (i < NUM_BUFS) {
+ int num = 8;
+
+ if (i + num > NUM_BUFS)
+ num = NUM_BUFS - i;
+ if (bman_release(pool, bufs_in + i, num)) {
+ pr_crit("bman_release() failed\n");
+ goto failed;
+ }
+ i += num;
+ }
+
+ /* Acquire buffers */
+ while (i > 0) {
+ int tmp, num = 8;
+
+ if (num > i)
+ num = i;
+ tmp = bman_acquire(pool, bufs_out + i - num, num);
+ WARN_ON(tmp != num);
+ i -= num;
+ }
+ i = bman_acquire(pool, NULL, 1);
+ WARN_ON(i > 0);
+
+ bufs_confirm();
+
+ if (--loops)
+ goto do_loop;
+
+ /* Clean up */
+ bman_free_pool(pool);
+ pr_info("%s(): Finished\n", __func__);
+ return;
+
+failed:
+ WARN_ON(1);
+}
--
1.7.11.7
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