Date: Sat, 13 Jan 2001 08:29:51 -0700 From: "Justin T. Gibbs" <gibbs@scsiguy.com> To: Robert Lipe <robertlipe@usa.net> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: bus_alloc_resource and RF_SHARABLE Message-ID: <200101131529.f0DFTps26367@aslan.scsiguy.com> In-Reply-To: Your message of "Fri, 12 Jan 2001 22:39:49 CST." <20010112223949.R8978@rjlhome.sco.com>
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>I'm on FreeBSD 4.1.1 and when I attempt multiple calls to
>bus_alloc_resource on a PCI device for the same BAR, I run afoul of code
>in resource_list_alloc:
>
> rle = resource_list_find(rl, type, *rid);
>
> if (!rle)
> return 0; /* no resource of that type/rid */
> if (rle->res)
> panic("resource_list_alloc: resource entry is busy");
>
>
>Even though I'm calling it with RF_SHARABLE
RF_SHARABLE requests to share a resource with another device, not
within the same device. Further, RF_SHARABLE only applies to
IRQs, not BARs.
--
Justin
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