Re: [PATCH v3 13/23] ata: libahci: Extend port-cmd flags set with port capabilities

Sergei Shtylyov
2022-05-13T08:22:59Z

On 5/12/22 2:18 AM, Serge Semin wrote:

> Currently not all of the Port-specific capabilities listed in the
> PORT_CMD-enumeration. Let's extend that set with the Cold Presence
> Detection and Mechanical Presence Switch attached to the Port flags [1] so
> to closeup the set of the platform-specific port-capabilities flags. Note
> these flags are supposed to be set by the platform firmware if there is
> one. Alternatively as we are about to do they can be set by means of the
> OF properties.
>
> While at it replace PORT_IRQ_DEV_ILCK with PORT_IRQ_DEV_MPS and fix the

Your code has PORT_IRQ_DMPS instead...

> comment there. In accordance with [2] that IRQ flag is supposed to
> indicate the state of the signal coming from the Mechanical Presence
> Switch.
>
> [1] Serial ATA AHCI 1.3.1 Specification, p.27
> [2] Serial ATA AHCI 1.3.1 Specification, p.7
>
> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
> ---
> drivers/ata/ahci.h | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
> index 7d834deefeb9..f501531bd1b3 100644
> --- a/drivers/ata/ahci.h
> +++ b/drivers/ata/ahci.h
> @@ -138,7 +138,7 @@ enum {
> PORT_IRQ_BAD_PMP = (1 << 23), /* incorrect port multiplier */
>
> PORT_IRQ_PHYRDY = (1 << 22), /* PhyRdy changed */
> - PORT_IRQ_DEV_ILCK = (1 << 7), /* device interlock */
> + PORT_IRQ_DMPS = (1 << 7), /* mechanical presence status */
> PORT_IRQ_CONNECT = (1 << 6), /* port connect change status */
> PORT_IRQ_SG_DONE = (1 << 5), /* descriptor processed */
> PORT_IRQ_UNK_FIS = (1 << 4), /* unknown FIS rx'd */
[...]

MBR, Sergey