Messages in this thread | | | Subject | Question: how to map SCSI data DMA address to virtual address? | Date | Thu, 2 Mar 2006 09:53:06 -0700 | From | "Ju, Seokmann" <> |
| |
Hi,
In the 'scsi_cmnd' structure, there are two entries holding address information for data to be transferred. One is 'request_buffer' and the other one is 'buffer'. In case of 'use_sg' is non-zero, those entries indicates the address of the scatter-gather table.
Is there way to get virtual address (so that the data could be accessed by the driver) of the actual data in the case of 'use_sg' is non-zero?
Any comments would be appreciated.
Thank you,
Seokmann - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |