Hi, 1. I have allocated memory of size 50 Kbytes using "get_user_pages()". 2. I created "struct scatterlist " list for DMA operation. 3. I have used dma_map_sg() call to map all scatterlist pages for DMA operation. 4. "sg_dma_address()" returns the bus (DMA) address from this scatterlist entry for single page/buffer only. Hardware bus master register is having only one address register for PCI-bus master operation. I want to transmit all the pages/buffer at at time. If i pass initial dma address to bus master register, whether OS will take care of upcoming dma addresses of scatterlist ? Regards, Munees. DISCLAIMER The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or HCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any mail and attachments please check them for viruses and defect. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
