I'm currently trying to wrap my head around SEMB and sending messages to an attached SEP on some Port Multiplier connected via eSATA ... I found that the AHCI driver supports certain well defined messages (for the activity leds) but I'm not sure what they actually are, and I have no idea how to utilize them from userspace at the moment Basically what I want to do is the following: - attach a Smart Enclosure via I2C to the PMP (the SEP is basically under my control) - retrieve certain values like temperature readings from that Smart Enclosure via the SEMB - send specific 'command' messages to the SEP to control user visible lights on the enclosure My current Test Setup includes a simple Sil 3726 based PMP (Dawicontrol DC-6510 PM) which has a connector for a SEP using I2C (via the SEMB), connected to an eSATA Port which is PMP capable and handles the connected drives quite well. I had a quick read on the (S)ATA specification regarding PMP and sending/retrieving messages from the SEMB, but at the moment, I have no clue how to 'map' that to existing? code in the Linux kernel or how that should/could be exposed to userspace ... Any hints/pointers/information would be greatly appreciated. Many thanks in advance, Herbert -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
