Date: Tue, 9 May 2000 08:44:26 -0400 (EDT) From: "John H. Baldwin" <jobaldwi@cslab.vt.edu> To: Doug Rabson <dfr@nlsystems.com> Cc: freebsd-new-bus@freebsd.org, jhb@freebsd.org, n_hibma@freebsd.org Subject: Re: Alpha USB difficulties... Message-ID: <Pine.BSF.4.21.0005090836050.31869-100000@snowcow.cslab.vt.edu> In-Reply-To: <Pine.BSF.4.21.0005090943310.47945-100000@salmon.nlsystems.com>
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On Tue, 9 May 2000, Doug Rabson wrote: > There is already a function isa_alloc_intr() which does most of what you > need so perhaps you don't need to add isa_alloc_intrs(). On the other > hand, your function is slightly more general. I did see the isa_alloc_intr() function, it was what I modeled my function on. I did use the intrs() function solely for the general case. I figured it would be bad to assume that all IRQ requests would always contain just one IRQ. If that is the case, however, then I'll change it to use isa_alloc_intr() instead. > To make interrupt delivery work, you also need to hook pci_setup_intr and > pci_teardown_intr and vector them to the isa functions too. Hmmm, it looks like I'll need to override this /sys/pci/pcisupport.c conditional on #ifdef alpha? Or is this only a USB thing and thus should only be done for the ohci and uhci drivers? I was assuming that this was a general problem with SRM and PCI devices with ISA IRQ's. > -- > Doug Rabson Mail: dfr@nlsystems.com > Nonlinear Systems Ltd. Phone: +44 20 8442 9037 John Baldwin jhb@FreeBSD.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-new-bus" in the body of the message
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