Date: Thu, 26 Oct 2006 14:23:04 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-acpi@freebsd.org Subject: Re: smbios.ko probes successfully if i disable acpi sysresource, fails if i do not Message-ID: <200610261423.04670.jhb@freebsd.org> In-Reply-To: <4540E242.8080100@root.org> References: <FBFBCF13-54B0-4825-A115-4CDDE4215CD7@utzweb.net> <4540E242.8080100@root.org>
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On Thursday 26 October 2006 12:28, Nate Lawson wrote: > John Utz wrote: > > Hello; > > > > as you may know i am attempting to use fbsd's smbios functionality to > > support porting the linux i8k-utils dell smbios keyboard and fan stuff. > > > > i just discovered today that disabling sysresource allows the module to > > attach. > > > > so, here's the part that i'd love some help with understanding: > > > > 1. with acpi enabled, is smbios.ko supposed to be asking acpi for a > > resource handle or something? > > > > 2. is acpi_resource.c behaving in error? should it not be consuming the > > smbios startaddr? > > > > note that startaddr for smbios is 0xf000, bios.c looks for pnpbios and > > pcibios starting at 0xe000 and completely ignores smbios. > > > > it seems to me that either statement 1 or 2 is correct, but not both. > > > > of course, i could be totally wrong, can anybody enlighten me? > > ACPI reserves sysresource objects for downstream devices. Then, those > devices get the resources they request via ACPI. Anyway, all this > should be transparent to the downstream devices. They shouldn't care if > they're getting their resources from nexus (top, pseudo-device) or acpi. > > Are you using bus_alloc_resource() or the equivalent to get the > resources in your driver? It transparently maps resource requests to > upstream devices. Please send the output of devinfo -rv with your > driver installed, both with and without sysresource enabled in ACPI. smbios is attached to nexus though, so acpi isn't upstream. -- John Baldwin
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