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[81.231.232.130]) by smtp.gmail.com with ESMTPSA id a13sm808910ljm.25.2020.05.06.01.25.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 May 2020 01:25:25 -0700 (PDT) From: "Edgar E. Iglesias" To: qemu-devel@nongnu.org Subject: [PATCH v2 8/9] hw/dma/xilinx_axidma: s2mm: Support stream fragments Date: Wed, 6 May 2020 10:25:12 +0200 Message-Id: <20200506082513.18751-9-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::141; envelope-from=edgar.iglesias@gmail.com; helo=mail-lf1-x141.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" Add support for stream fragments. Reviewed-by: Alistair Francis Signed-off-by: Edgar E. Iglesias --- hw/dma/xilinx_axidma.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/hw/dma/xilinx_axidma.c b/hw/dma/xilinx_axidma.c index 101d32a965..87be9cade7 100644 --- a/hw/dma/xilinx_axidma.c +++ b/hw/dma/xilinx_axidma.c @@ -110,6 +110,7 @@ struct Stream { int nr; + bool sof; struct SDesc desc; unsigned int complete_cnt; uint32_t regs[R_MAX]; @@ -174,6 +175,7 @@ static void stream_reset(struct Stream *s) { s->regs[R_DMASR] = DMASR_HALTED; /* starts up halted. */ s->regs[R_DMACR] = 1 << 16; /* Starts with one in compl threshold. */ + s->sof = true; } /* Map an offset addr into a channel index. */ @@ -321,12 +323,11 @@ static void stream_process_mem2s(struct Stream *s, StreamSlave *tx_data_dev, } static size_t stream_process_s2mem(struct Stream *s, unsigned char *buf, - size_t len) + size_t len, bool eop) { uint32_t prev_d; unsigned int rxlen; size_t pos = 0; - int sof = 1; if (!stream_running(s) || stream_idle(s)) { return 0; @@ -352,16 +353,16 @@ static size_t stream_process_s2mem(struct Stream *s, unsigned char *buf, pos += rxlen; /* Update the descriptor. */ - if (!len) { + if (eop) { stream_complete(s); memcpy(s->desc.app, s->app, sizeof(s->desc.app)); s->desc.status |= SDESC_STATUS_EOF; } - s->desc.status |= sof << SDESC_STATUS_SOF_BIT; + s->desc.status |= s->sof << SDESC_STATUS_SOF_BIT; s->desc.status |= SDESC_STATUS_COMPLETE; stream_desc_store(s, s->regs[R_CURDESC]); - sof = 0; + s->sof = eop; /* Advance. */ prev_d = s->regs[R_CURDESC]; @@ -426,8 +427,7 @@ xilinx_axidma_data_stream_push(StreamSlave *obj, unsigned char *buf, size_t len, struct Stream *s = &ds->dma->streams[1]; size_t ret; - assert(eop); - ret = stream_process_s2mem(s, buf, len); + ret = stream_process_s2mem(s, buf, len, eop); stream_update_irq(s); return ret; }