aboutsummaryrefslogtreecommitdiff
path: root/hw/dma/xilinx_axidma.c
diff options
context:
space:
mode:
authorEdgar E. Iglesias <edgar.iglesias@xilinx.com>2020-05-06 10:25:09 +0200
committerEdgar E. Iglesias <edgar.iglesias@xilinx.com>2020-05-14 13:44:35 +0200
commit51b19950ca62abce05b00eef30d9ebbfb8b15f46 (patch)
tree8df164e4d950c0e97fbc962087a05a4c20e6bebf /hw/dma/xilinx_axidma.c
parente3a8926d0e91e6783157a9934bd6f59c7efaa992 (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/xilinx_axidma.c')
-rw-r--r--hw/dma/xilinx_axidma.c10
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;