On Tue, 18 Mar 2025 18:43:14 +0800, Huacai Chen wrote:
> We use CD/DVD drives under Marvell 88SE9215 SATA controller on many
> Loongson-based machines. We found its PIO doesn't work well, and on the
> opposite its DMA seems work very well.
>
> We don't know the detail of the 88SE9215 SATA controller, but we have
> tested different CD/DVD drives and they all have problems under 88SE9215
> (but they all work well under an Intel SATA controller). So, we consider
> this problem is bound to 88SE9215 SATA controller rather than bound to
> CD/DVD drives.
>
> [...]
Applied to libata/linux.git (for-6.15), thanks!
[1/1] ahci: Marvell 88SE9215 controllers prefer DMA for ATAPI
https://git.kernel.org/libata/linux/c/0507c777
Kind regards,
Niklas
