Messages in this thread | | | Date | Fri, 22 Oct 2021 14:51:18 +0200 | From | Andrew Lunn <> | Subject | Re: [PATCH net-next v3] net: marvell: prestera: add firmware v4.0 support |
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On Fri, Oct 22, 2021 at 02:27:37PM +0200, Andrew Lunn wrote: > On Wed, Oct 20, 2021 at 12:32:28PM +0300, Volodymyr Mytnyk wrote: > > From: Volodymyr Mytnyk <vmytnyk@marvell.com> > > > > Add firmware (FW) version 4.0 support for Marvell Prestera > > driver. > > > > Major changes have been made to new v4.0 FW ABI to add support > > of new features, introduce the stability of the FW ABI and ensure > > better forward compatibility for the future driver vesrions. > > > > Current v4.0 FW feature set support does not expect any changes > > to ABI, as it was defined and tested through long period of time. > > The ABI may be extended in case of new features, but it will not > > break the backward compatibility. > > > > ABI major changes done in v4.0: > > - L1 ABI, where MAC and PHY API configuration are split. > > - ACL has been split to low-level TCAM and Counters ABI > > to provide more HW ACL capabilities for future driver > > versions. > > > > To support backward support, the addition compatibility layer is > > required in the driver which will have two different codebase under > > "if FW-VER elif FW-VER else" conditions that will be removed > > in the future anyway, So, the idea was to break backward support > > and focus on more stable FW instead of supporting old version > > with very minimal and limited set of features/capabilities. > > > +/* TODO: add another parameters here: modes, etc... */ > > +struct prestera_port_phy_config { > > + bool admin; > > + u32 mode; > > + u8 mdix; > > +}; > > > @@ -242,10 +246,44 @@ union prestera_msg_port_param { > > u8 duplex; > > u8 fec; > > u8 fc; > > - struct prestera_msg_port_mdix_param mdix; > > - struct prestera_msg_port_autoneg_param autoneg; > > + > > + union { > > + struct { > > + /* TODO: merge it with "mode" */ > > > + struct { > > + /* TODO: merge it with "mode" */ > > + u8 admin:1; > > + u8 adv_enable; > > + u64 modes; > > + /* TODO: merge it with modes */ > > + u32 mode; > > + u8 mdix; > > + } phy;
Please can you also make use of __le64, __le32, __le16 in messages to/from the firmware, so sparse etc can help you catch were you are missing htonl(), htons() etc.
Andrew
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