diff options
Diffstat (limited to 'drivers/dma/dmatest.c')
| -rw-r--r-- | drivers/dma/dmatest.c | 44 |
1 files changed, 33 insertions, 11 deletions
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c index 01ac7112b5fd..d07b73275d0f 100644 --- a/drivers/dma/dmatest.c +++ b/drivers/dma/dmatest.c @@ -66,6 +66,10 @@ module_param(timeout, uint, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(timeout, "Transfer Timeout in msec (default: 3000), " "Pass -1 for infinite timeout"); +static bool noverify; +module_param(noverify, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(noverify, "Disable random data setup and verification"); + /** * struct dmatest_params - test parameters. * @buf_size: size of the memcpy test buffer @@ -88,6 +92,7 @@ struct dmatest_params { unsigned int xor_sources; unsigned int pq_sources; int timeout; + bool noverify; }; /** @@ -435,18 +440,30 @@ static int dmatest_func(void *data) break; } - len = dmatest_random() % params->buf_size + 1; + if (params->noverify) { + len = params->buf_size; + src_off = 0; + dst_off = 0; + } else { + len = dmatest_random() % params->buf_size + 1; + len = (len >> align) << align; + if (!len) + len = 1 << align; + src_off = dmatest_random() % (params->buf_size - len + 1); + dst_off = dmatest_random() % (params->buf_size - len + 1); + + src_off = (src_off >> align) << align; + dst_off = (dst_off >> align) << align; + + dmatest_init_srcs(thread->srcs, src_off, len, + params->buf_size); + dmatest_init_dsts(thread->dsts, dst_off, len, + params->buf_size); + } + len = (len >> align) << align; if (!len) len = 1 << align; - src_off = dmatest_random() % (params->buf_size - len + 1); - dst_off = dmatest_random() % (params->buf_size - len + 1); - - src_off = (src_off >> align) << align; - dst_off = (dst_off >> align) << align; - - dmatest_init_srcs(thread->srcs, src_off, len, params->buf_size); - dmatest_init_dsts(thread->dsts, dst_off, len, params->buf_size); for (i = 0; i < src_cnt; i++) { u8 *buf = thread->srcs[i] + src_off; @@ -555,10 +572,14 @@ static int dmatest_func(void *data) unmap_src(dev->dev, dma_srcs, len, src_cnt); unmap_dst(dev->dev, dma_dsts, params->buf_size, dst_cnt); - error_count = 0; + if (params->noverify) { + dbg_result("test passed", total_tests, src_off, dst_off, + len, 0); + continue; + } pr_debug("%s: verifying source buffer...\n", current->comm); - error_count += dmatest_verify(thread->srcs, 0, src_off, + error_count = dmatest_verify(thread->srcs, 0, src_off, 0, PATTERN_SRC, true); error_count += dmatest_verify(thread->srcs, src_off, src_off + len, src_off, @@ -773,6 +794,7 @@ static void run_threaded_test(struct dmatest_info *info) params->xor_sources = xor_sources; params->pq_sources = pq_sources; params->timeout = timeout; + params->noverify = noverify; request_channels(info, DMA_MEMCPY); request_channels(info, DMA_XOR); |