Date: Sat, 12 Oct 2024 16:12:37 +1000 From: Peter Grehan <grehan@freebsd.org> To: Vasily Postnicov <shamaz.mazum@gmail.com> Cc: freebsd-virtualization@freebsd.org Subject: Re: Running Mezzano in bhyve Message-ID: <e395fc30-0582-4d51-b1b3-cf5157bdd3a9@freebsd.org> In-Reply-To: <CADnZ6BkHkNBD5LaEZCeSy7QnfquwB-Wv3sYu4S=P58ZyVGrDQQ@mail.gmail.com> References: <CADnZ6B=ex24mbGN3du6UuS84akJZAxTcG5xqt0HB0RN5S262cQ@mail.gmail.com> <17f4077d-647d-4848-9d6f-97f9886ef636@freebsd.org> <CADnZ6BkWd-v=y0L9%2BGiu=ys_Cuk5nm6djApSXYLufYuv=WnQWQ@mail.gmail.com> <CADnZ6B=LwZyiBTvXGek37e23t_e3ub4K%2BE96QaahukPbobkHhg@mail.gmail.com> <8b249b64-d041-4f12-b6cb-fdb528837f22@freebsd.org> <CADnZ6BkKh5V9_Y%2BTGrGpc=vTW2q81pdWJn8MUVvWNOiV35nBFw@mail.gmail.com> <CADnZ6BkHkNBD5LaEZCeSy7QnfquwB-Wv3sYu4S=P58ZyVGrDQQ@mail.gmail.com>
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> I suspect PCI interrupts are not functioning correctly. > > Look at this code: > ;; Attach interrupt handler. > (sup:debug-print-line "Handler: " (ahci-irq-handler ahci)) > (sup:irq-attach (sup:platform-irq (pci:pci-intr-line location)) > (ahci-irq-handler-function ahci) > ahci) > > and this > > (defun pci-intr-line (device) > (pci-config/8 device +pci-config-intr-line+)) ;; comment by me: the > constant is #x3c > > I found that "PCI 0x3c" means PCI interrupt pin. AFAIK, interrupt pins > are not supported by bhyve, is that correct? If it's true, I need either > to teach bhyve how to deal with legacy interrupts or to teach Mezzano to > understand MSI. What would be easier in your opinion? Legacy interrupts should work fine in bhyve for emulated devices. I'd suspect this would be much easier to debug/enhance as opposed to adding MSI (and likely MSI-x). later, Peter.
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