From e455f83ca2e4ee7c39837309a422732167994cbf Mon Sep 17 00:00:00 2001 From: "Suren A. Chilingaryan" Date: Tue, 12 Jul 2011 16:35:24 +0200 Subject: Separate NWL loopback code, provide DMA start/stop interfaces --- dma.c | 46 ++++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 42 insertions(+), 4 deletions(-) (limited to 'dma.c') diff --git a/dma.c b/dma.c index 0619a45..3cba0da 100644 --- a/dma.c +++ b/dma.c @@ -55,9 +55,47 @@ int pcilib_set_dma_engine_description(pcilib_t *ctx, pcilib_dma_engine_t engine, } int pcilib_start_dma(pcilib_t *ctx, pcilib_dma_engine_t dma, pcilib_dma_flags_t flags) { + int err; + + const pcilib_dma_info_t *info = pcilib_get_dma_info(ctx); + if (!info) { + pcilib_error("DMA is not supported by the device"); + return PCILIB_ERROR_NOTSUPPORTED; + } + + if (!ctx->model_info.dma_api) { + pcilib_error("DMA Engine is not configured in the current model"); + return PCILIB_ERROR_NOTAVAILABLE; + } + + if (!ctx->model_info.dma_api->start_dma) { + //pcilib_error("The IRQs are not supported by configured DMA engine"); + return 0; + } + + return ctx->model_info.dma_api->start_dma(ctx->dma_ctx, dma, flags); } int pcilib_stop_dma(pcilib_t *ctx, pcilib_dma_engine_t dma, pcilib_dma_flags_t flags) { + int err; + + const pcilib_dma_info_t *info = pcilib_get_dma_info(ctx); + if (!info) { + pcilib_error("DMA is not supported by the device"); + return PCILIB_ERROR_NOTSUPPORTED; + } + + if (!ctx->model_info.dma_api) { + pcilib_error("DMA Engine is not configured in the current model"); + return PCILIB_ERROR_NOTAVAILABLE; + } + + if (!ctx->model_info.dma_api->stop_dma) { + //pcilib_error("The IRQs are not supported by configured DMA engine"); + return 0; + } + + return ctx->model_info.dma_api->stop_dma(ctx->dma_ctx, dma, flags); } int pcilib_enable_irq(pcilib_t *ctx, pcilib_irq_type_t irq_type, pcilib_dma_flags_t flags) { @@ -75,8 +113,8 @@ int pcilib_enable_irq(pcilib_t *ctx, pcilib_irq_type_t irq_type, pcilib_dma_flag } if (!ctx->model_info.dma_api->enable_irq) { - pcilib_error("The IRQs are not supported by configured DMA engine"); - return PCILIB_ERROR_NOTSUPPORTED; + //pcilib_error("The IRQs are not supported by configured DMA engine"); + return 0; } return ctx->model_info.dma_api->enable_irq(ctx->dma_ctx, irq_type, flags); @@ -97,8 +135,8 @@ int pcilib_disable_irq(pcilib_t *ctx, pcilib_dma_flags_t flags) { } if (!ctx->model_info.dma_api->disable_irq) { - pcilib_error("The IRQs are not supported by configured DMA engine"); - return PCILIB_ERROR_NOTSUPPORTED; + //pcilib_error("The IRQs are not supported by configured DMA engine"); + return 0; } return ctx->model_info.dma_api->disable_irq(ctx->dma_ctx, flags); -- cgit v1.2.3