diff options
Diffstat (limited to 'linux/drivers/soc/fsl/qbman/bman_test_api.c')
| -rw-r--r-- | linux/drivers/soc/fsl/qbman/bman_test_api.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/linux/drivers/soc/fsl/qbman/bman_test_api.c b/linux/drivers/soc/fsl/qbman/bman_test_api.c new file mode 100644 index 00000000..5585bdf6 --- /dev/null +++ b/linux/drivers/soc/fsl/qbman/bman_test_api.c @@ -0,0 +1,188 @@ +#include <machine/rtems-bsd-kernel-space.h> + +#include <rtems/bsd/local/opt_dpaa.h> + +/* Copyright 2008 - 2015 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" + +/*************/ +/* constants */ +/*************/ + +#define PORTAL_OPAQUE ((void *)0xf00dbeef) +#define POOL_OPAQUE ((void *)0xdeadabba) +#define NUM_BUFS 93 +#define LOOPS 3 +#define BMAN_TOKEN_MASK 0x00FFFFFFFFFFLLU + +/***************/ +/* global vars */ +/***************/ + +static struct bman_pool *pool; +static int depleted; +static struct bm_buffer bufs_in[NUM_BUFS] ____cacheline_aligned; +static struct bm_buffer bufs_out[NUM_BUFS] ____cacheline_aligned; +static int bufs_received; + +/* Predeclare the callback so we can instantiate pool parameters */ +static void depletion_cb(struct bman_portal *, struct bman_pool *, void *, int); + +/**********************/ +/* internal functions */ +/**********************/ + +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++; + BUG_ON(matches != 1); + } +} + +/********/ +/* test */ +/********/ + +static void depletion_cb(struct bman_portal *__portal, struct bman_pool *__pool, + void *pool_ctx, int __depleted) +{ + BUG_ON(__pool != pool); + BUG_ON(pool_ctx != POOL_OPAQUE); + depleted = __depleted; +} + +void bman_test_api(void) +{ + struct bman_pool_params pparams = { + .flags = BMAN_POOL_FLAG_DEPLETION | BMAN_POOL_FLAG_DYNAMIC_BPID, + .cb = depletion_cb, + .cb_ctx = POOL_OPAQUE, + }; + int i, loops = LOOPS; + + bufs_init(); + + pr_info(" --- Starting high-level test ---\n"); + + pool = bman_new_pool(&pparams); + BUG_ON(!pool); + + /*******************/ + /* Release buffers */ + /*******************/ +do_loop: + i = 0; + while (i < NUM_BUFS) { + u32 flags = BMAN_RELEASE_FLAG_WAIT; + int num = 8; + + if ((i + num) > NUM_BUFS) + num = NUM_BUFS - i; + if ((i + num) == NUM_BUFS) + flags |= BMAN_RELEASE_FLAG_WAIT_SYNC; + if (bman_release(pool, bufs_in + i, num, flags)) + panic("bman_release() failed\n"); + 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, 0); + BUG_ON(tmp != num); + i -= num; + } + i = bman_acquire(pool, NULL, 1, 0); + BUG_ON(i > 0); + + bufs_confirm(); + + if (--loops) + goto do_loop; + + /************/ + /* Clean up */ + /************/ + bman_free_pool(pool); + pr_info(" --- Finished high-level test ---\n"); +} |