diff options
| author | Edgar E. Iglesias <edgar.iglesias@xilinx.com> | 2020-05-06 10:25:09 +0200 |
|---|---|---|
| committer | Edgar E. Iglesias <edgar.iglesias@xilinx.com> | 2020-05-14 13:44:35 +0200 |
| commit | 51b19950ca62abce05b00eef30d9ebbfb8b15f46 (patch) | |
| tree | 8df164e4d950c0e97fbc962087a05a4c20e6bebf /hw/dma | |
| parent | e3a8926d0e91e6783157a9934bd6f59c7efaa992 (diff) | |
hw/core: stream: Add an end-of-packet flag
Some stream clients stream an endless stream of data while
other clients stream data in packets. Stream interfaces
usually have a way to signal the end of a packet or the
last beat of a transfer.
This adds an end-of-packet flag to the push interface.
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-Id: <20200506082513.18751-6-edgar.iglesias@gmail.com>
Diffstat (limited to 'hw/dma')
| -rw-r--r-- | hw/dma/xilinx_axidma.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/hw/dma/xilinx_axidma.c b/hw/dma/xilinx_axidma.c index 4540051448..a770e12c96 100644 --- a/hw/dma/xilinx_axidma.c +++ b/hw/dma/xilinx_axidma.c @@ -283,7 +283,7 @@ static void stream_process_mem2s(struct Stream *s, StreamSlave *tx_data_dev, if (stream_desc_sof(&s->desc)) { s->pos = 0; - stream_push(tx_control_dev, s->desc.app, sizeof(s->desc.app)); + stream_push(tx_control_dev, s->desc.app, sizeof(s->desc.app), true); } txlen = s->desc.control & SDESC_CTRL_LEN_MASK; @@ -298,7 +298,7 @@ static void stream_process_mem2s(struct Stream *s, StreamSlave *tx_data_dev, s->pos += txlen; if (stream_desc_eof(&s->desc)) { - stream_push(tx_data_dev, s->txbuf, s->pos); + stream_push(tx_data_dev, s->txbuf, s->pos, true); s->pos = 0; stream_complete(s); } @@ -384,7 +384,7 @@ static void xilinx_axidma_reset(DeviceState *dev) static size_t xilinx_axidma_control_stream_push(StreamSlave *obj, unsigned char *buf, - size_t len) + size_t len, bool eop) { XilinxAXIDMAStreamSlave *cs = XILINX_AXI_DMA_CONTROL_STREAM(obj); struct Stream *s = &cs->dma->streams[1]; @@ -416,12 +416,14 @@ xilinx_axidma_data_stream_can_push(StreamSlave *obj, } static size_t -xilinx_axidma_data_stream_push(StreamSlave *obj, unsigned char *buf, size_t len) +xilinx_axidma_data_stream_push(StreamSlave *obj, unsigned char *buf, size_t len, + bool eop) { XilinxAXIDMAStreamSlave *ds = XILINX_AXI_DMA_DATA_STREAM(obj); struct Stream *s = &ds->dma->streams[1]; size_t ret; + assert(eop); ret = stream_process_s2mem(s, buf, len); stream_update_irq(s); return ret; |