Dear, We have seen some issues with the VIA VX900 chipset. The main trouble is that some SATA hard drive are not seen by the kernel (BIOS and boot-loader are OK).
After investigations, it seems that during the initialisation of the controler, some reset commands are send via "ata_via_sata_reset" fonction. Into the chipset documentation, there is a warning about successive reset commands, and software must waiting the "BUSY" flag is clear, before send another reset. I have added a "DELAY(10000)" between the second call of "ata_sata_phy_reset" and the call of "ata_generic_reset" and the problem disapear. I also made a more complex fix which check the "BUSY" flag. Which fix of delai checking is the better one ? Best Regards -- Alexandre Martins NETASQ -- We secure IT
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