/* 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);
}
Codebase Browser
linux