On 20.11.2024 12:18:03, Ciprian Marian Costea wrote: > On 11/20/2024 12:01 PM, Marc Kleine-Budde wrote: > > On 20.11.2024 11:01:25, Ciprian Marian Costea wrote: > > > On 11/20/2024 10:52 AM, Marc Kleine-Budde wrote: > > > > On 19.11.2024 10:10:53, Ciprian Costea wrote: > > > > > From: Ciprian Marian Costea <ciprianmarian.costea@xxxxxxxxxxx> > > > > > > > > > > On S32G2/S32G3 SoC, there are separate interrupts > > > > > for state change, bus errors, MBs 0-7 and MBs 8-127 respectively. > > > > > > > > > > In order to handle this FlexCAN hardware particularity, reuse > > > > > the 'FLEXCAN_QUIRK_NR_IRQ_3' quirk provided by mcf5441x's irq > > > > > handling support. > > > > > > > > > > Additionally, introduce 'FLEXCAN_QUIRK_SECONDARY_MB_IRQ' quirk, > > > > > which can be used in case there are two separate mailbox ranges > > > > > controlled by independent hardware interrupt lines, as it is > > > > > the case on S32G2/S32G3 SoC. > > > > > > > > Does the mainline driver already handle the 2nd mailbox range? Is there > > > > any downstream code yet? > > > > > > > > Marc > > > > > > > > > > Hello Marc, > > > > > > The mainline driver already handles the 2nd mailbox range (same > > > 'flexcan_irq') is used. The only difference is that for the 2nd mailbox > > > range a separate interrupt line is used. > > > > AFAICS the IP core supports up to 128 mailboxes, though the driver only > > supports 64 mailboxes. Which mailboxes do you mean by the "2nd mailbox > > range"? What about mailboxes 64..127, which IRQ will them? > > On S32G the following is the mapping between FlexCAN IRQs and mailboxes: > - IRQ line X -> Mailboxes 0-7 > - IRQ line Y -> Mailboxes 8-127 (Logical OR of Message Buffer Interrupt > lines 127 to 8) > > By 2nd range, I was refering to Mailboxes 8-127. Interesting, do you know why it's not symmetrical (0...63, 64...127)? Can you point me to the documentation. Thanks, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung Nürnberg | Phone: +49-5121-206917-129 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-9 |
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