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[81.231.232.130]) by smtp.gmail.com with ESMTPSA id d19sm1085947lfj.8.2020.05.06.01.25.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 May 2020 01:25:21 -0700 (PDT) From: "Edgar E. Iglesias" To: qemu-devel@nongnu.org Subject: [PATCH v2 5/9] hw/core: stream: Add an end-of-packet flag Date: Wed, 6 May 2020 10:25:09 +0200 Message-Id: <20200506082513.18751-6-edgar.iglesias@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200506082513.18751-1-edgar.iglesias@gmail.com> References: <20200506082513.18751-1-edgar.iglesias@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::244; envelope-from=edgar.iglesias@gmail.com; helo=mail-lj1-x244.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: 13 X-Spam_score: 1.3 X-Spam_bar: + X-Spam_report: (1.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, FSL_HELO_FAKE=3.399, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: damien.hedde@greensocs.com, peter.maydell@linaro.org, sstabellini@kernel.org, edgar.iglesias@xilinx.com, sai.pavan.boddu@xilinx.com, frasse.iglesias@gmail.com, jasowang@redhat.com, alistair@alistair23.me, frederic.konrad@adacore.com, qemu-arm@nongnu.org, philmd@redhat.com, luc.michel@greensocs.com, figlesia@xilinx.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: "Edgar E. Iglesias" 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 Reviewed-by: Francisco Iglesias Signed-off-by: Edgar E. Iglesias --- include/hw/stream.h | 5 +++-- hw/core/stream.c | 4 ++-- hw/dma/xilinx_axidma.c | 10 ++++++---- hw/net/xilinx_axienet.c | 14 ++++++++++---- hw/ssi/xilinx_spips.c | 2 +- 5 files changed, 22 insertions(+), 13 deletions(-) diff --git a/include/hw/stream.h b/include/hw/stream.h index d02f62ca89..ed09e83683 100644 --- a/include/hw/stream.h +++ b/include/hw/stream.h @@ -39,12 +39,13 @@ typedef struct StreamSlaveClass { * @obj: Stream slave to push to * @buf: Data to write * @len: Maximum number of bytes to write + * @eop: End of packet flag */ - size_t (*push)(StreamSlave *obj, unsigned char *buf, size_t len); + size_t (*push)(StreamSlave *obj, unsigned char *buf, size_t len, bool eop); } StreamSlaveClass; size_t -stream_push(StreamSlave *sink, uint8_t *buf, size_t len); +stream_push(StreamSlave *sink, uint8_t *buf, size_t len, bool eop); bool stream_can_push(StreamSlave *sink, StreamCanPushNotifyFn notify, diff --git a/hw/core/stream.c b/hw/core/stream.c index 39b1e595cd..a65ad1208d 100644 --- a/hw/core/stream.c +++ b/hw/core/stream.c @@ -3,11 +3,11 @@ #include "qemu/module.h" size_t -stream_push(StreamSlave *sink, uint8_t *buf, size_t len) +stream_push(StreamSlave *sink, uint8_t *buf, size_t len, bool eop) { StreamSlaveClass *k = STREAM_SLAVE_GET_CLASS(sink); - return k->push(sink, buf, len); + return k->push(sink, buf, len, eop); } bool 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; diff --git a/hw/net/xilinx_axienet.c b/hw/net/xilinx_axienet.c index c8dfcda3ee..bd48305577 100644 --- a/hw/net/xilinx_axienet.c +++ b/hw/net/xilinx_axienet.c @@ -697,14 +697,14 @@ static void axienet_eth_rx_notify(void *opaque) axienet_eth_rx_notify, s)) { size_t ret = stream_push(s->tx_control_dev, (void *)s->rxapp + CONTROL_PAYLOAD_SIZE - - s->rxappsize, s->rxappsize); + - s->rxappsize, s->rxappsize, true); s->rxappsize -= ret; } while (s->rxsize && stream_can_push(s->tx_data_dev, axienet_eth_rx_notify, s)) { size_t ret = stream_push(s->tx_data_dev, (void *)s->rxmem + s->rxpos, - s->rxsize); + s->rxsize, true); s->rxsize -= ret; s->rxpos += ret; if (!s->rxsize) { @@ -874,12 +874,14 @@ static ssize_t eth_rx(NetClientState *nc, const uint8_t *buf, size_t size) } static size_t -xilinx_axienet_control_stream_push(StreamSlave *obj, uint8_t *buf, size_t len) +xilinx_axienet_control_stream_push(StreamSlave *obj, uint8_t *buf, size_t len, + bool eop) { int i; XilinxAXIEnetStreamSlave *cs = XILINX_AXI_ENET_CONTROL_STREAM(obj); XilinxAXIEnet *s = cs->enet; + assert(eop); if (len != CONTROL_PAYLOAD_SIZE) { hw_error("AXI Enet requires %d byte control stream payload\n", (int)CONTROL_PAYLOAD_SIZE); @@ -894,11 +896,15 @@ xilinx_axienet_control_stream_push(StreamSlave *obj, uint8_t *buf, size_t len) } static size_t -xilinx_axienet_data_stream_push(StreamSlave *obj, uint8_t *buf, size_t size) +xilinx_axienet_data_stream_push(StreamSlave *obj, uint8_t *buf, size_t size, + bool eop) { XilinxAXIEnetStreamSlave *ds = XILINX_AXI_ENET_DATA_STREAM(obj); XilinxAXIEnet *s = ds->enet; + /* We don't support fragmented packets yet. */ + assert(eop); + /* TX enable ? */ if (!(s->tc & TC_TX)) { return size; diff --git a/hw/ssi/xilinx_spips.c b/hw/ssi/xilinx_spips.c index c57850a505..4cfce882ab 100644 --- a/hw/ssi/xilinx_spips.c +++ b/hw/ssi/xilinx_spips.c @@ -868,7 +868,7 @@ static void xlnx_zynqmp_qspips_notify(void *opaque) memcpy(rq->dma_buf, rxd, num); - ret = stream_push(rq->dma, rq->dma_buf, num); + ret = stream_push(rq->dma, rq->dma_buf, num, false); assert(ret == num); xlnx_zynqmp_qspips_check_flush(rq); }