diff options
Diffstat (limited to 'dma.c')
| -rw-r--r-- | dma.c | 25 |
1 files changed, 21 insertions, 4 deletions
@@ -9,6 +9,7 @@ #include <sys/ioctl.h> #include <sys/mman.h> #include <arpa/inet.h> +#include <sys/time.h> #include <errno.h> #include <assert.h> @@ -165,7 +166,14 @@ static int pcilib_dma_read_callback(void *arg, pcilib_dma_flags_t flags, size_t } static int pcilib_dma_skip_callback(void *arg, pcilib_dma_flags_t flags, size_t bufsize, void *buf) { -// if (arg) (*(uint32_t*)arg) += bufsize; + struct timeval *tv = (struct timeval*)arg; + struct timeval cur; + + if (tv) { + gettimeofday(&cur, NULL); + if ((cur.tv_sec > tv->tv_sec)||((cur.tv_sec == tv->tv_sec)&&(cur.tv_usec > tv->tv_usec))) return 0; + } + return 1; } @@ -215,11 +223,20 @@ int pcilib_read_dma(pcilib_t *ctx, pcilib_dma_engine_t dma, uintptr_t addr, size int pcilib_skip_dma(pcilib_t *ctx, pcilib_dma_engine_t dma) { int err; - size_t skipped = 0; + struct timeval tv, cur; + + gettimeofday(&tv, NULL); + tv.tv_usec += PCILIB_DMA_SKIP_TIMEOUT; + tv.tv_sec += tv.tv_usec / 1000000; + tv.tv_usec += tv.tv_usec % 1000000; + do { // IMMEDIATE timeout is not working properly, so default is set - err = pcilib_stream_dma(ctx, dma, 0, 0, PCILIB_DMA_FLAGS_DEFAULT, PCILIB_DMA_TIMEOUT, pcilib_dma_skip_callback, &skipped); - } while ((!err)&&(skipped > 0)); + err = pcilib_stream_dma(ctx, dma, 0, 0, PCILIB_DMA_FLAGS_DEFAULT, PCILIB_DMA_TIMEOUT, pcilib_dma_skip_callback, &tv); + gettimeofday(&cur, NULL); + } while ((!err)&&((cur.tv_sec < tv.tv_sec)||((cur.tv_sec == tv.tv_sec)&&(cur.tv_usec < tv.tv_usec)))); + + if ((cur.tv_sec > tv.tv_sec)||((cur.tv_sec == tv.tv_sec)&&(cur.tv_usec > tv.tv_usec))) return PCILIB_ERROR_TIMEOUT; return 0; } |