Hi ! I have an embedded XScale system with an SL811HS USB host chip. I've got usb-2.4 via Bitkeeper and looked into it because it had code for this USB chip and I had problems with
http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=1272/1 The links to my mail with the problems I had with this driver are http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2003-January/013071.html So I copied the relevant pieces from the usb-2.4 tree into my 2.4.19-rmk4-pxa2 tree and tried to compile the stuff. However, this did not work. I saw that in hcd.c there is the following code: // NOTE: 2.5 does this if !URB_NO_DMA_MAP transfer flag if (usb_pipecontrol (urb->pipe)) urb->setup_dma = pci_map_single ( hcd->pdev, urb->setup_packet, sizeof (struct usb_ctrlrequest), PCI_DMA_TODEVICE); if (urb->transfer_buffer_length != 0) urb->transfer_dma = pci_map_single ( hcd->pdev, urb->transfer_buffer, urb->transfer_buffer_length, usb_pipein (urb->pipe) ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE); No I wonder how I would convert this code to work on my PCI-less device --- That means that CONFIG_PCI is not set so there is no hcd->pdev. Also, the chip is not DMA-driven, nDACK and nDREQ pins are not connected to the CPU, so calling dma functions should not be done ?!? ------------------------------------------------------- This SF.NET email is sponsored by: SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See! http://www.vasoftware.com _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
