From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k6T5N-00033j-LM for barebox@lists.infradead.org; Fri, 14 Aug 2020 06:21:07 +0000 Date: Fri, 14 Aug 2020 08:21:03 +0200 From: Sascha Hauer Message-ID: <20200814062103.GC13023@pengutronix.de> References: <20200811151637.17705-1-jmaselbas@kalray.eu> <20200811151637.17705-3-jmaselbas@kalray.eu> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200811151637.17705-3-jmaselbas@kalray.eu> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [PATCH v4 02/13] usb: dwc2: Add host controller driver To: Jules Maselbas Cc: Barebox List , Ahmad Fatoum Hi Jules, On Tue, Aug 11, 2020 at 05:16:26PM +0200, Jules Maselbas wrote: > + > +static int transfer_chunk(struct dwc2 *dwc2, u8 hc, > + u8 *pid, int in, void *buffer, int num_packets, > + int xfer_len, int *actual_len, int odd_frame) > +{ > + uint32_t hctsiz, hcchar, sub; > + dma_addr_t dma_addr; > + int ret = 0; > + > + dma_addr = dma_map_single(dwc2->dev, buffer, xfer_len, > + in ? DMA_FROM_DEVICE : DMA_TO_DEVICE); > + > + dwc2_dbg(dwc2, "chunk: pid=%d xfer_len=%u pkts=%u dma_addr=%pad\n", > + *pid, xfer_len, num_packets, (void *)dma_addr); > + > + dwc2_writel(dwc2, dma_addr, HCDMA(hc)); > + > + hctsiz = (xfer_len << TSIZ_XFERSIZE_SHIFT) > + | (1 << TSIZ_PKTCNT_SHIFT) > + | (*pid << TSIZ_SC_MC_PID_SHIFT); Any reason to ignore num_packets here and hardcode 1 to the packet count? This breaks transfers > 512 bytes in my case. Sascha -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox