On 28.02.2021 11:18:13, Dario Binacchi wrote: > > > + u32 msg_obj_rx_mask; > > > > Is this variable big enough after you've extended the driver to use 64 > > mailboxes? > > Yes. I have kept the message assignment policy unchanged, they are equally > divided between reception and transmission. Therefore, in the case of 64 > messages, 32 are used for reception and 32 for transmission. So a 32-bit > variable is enough. > > > > > If you want to support 128 message objects converting the driver to the > > linux bitmap API is another option. > > > > Do you know if any of the hardware managed by Linux use a D_CAN controller > with 128 message objects?
Even the am437x only uses 64 message objects. Ok let's stay with 64 as max for now. regards, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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