sg_dma_address

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.
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