Date: Tue, 4 Jan 2005 09:25:56 +1100 From: Peter Jeremy <PeterJeremy@optushome.com.au> To: freebsd-acpi@freebsd.org Subject: ACPI + SMBus disables ISA bus Message-ID: <20050103222556.GW79646@cirb503493.alcatel.com.au>
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I originally sent this to -stable but have received no response. It's possible that it's an ACPI problem so I'm trying here. I'm trying to upgrade a system from 4.10 to 5.3p2 and am running into problems with the ISA bus disappearing (not probing or attaching) when I have both ACPI and SMBus enabled. This leads to a panic when something tries to do a sysctl on the (non-existent) console. The problem is masked if I use a serial console because the only ISA device I need is the VGA adapter and the lack of vga0 and syscons doesn't worry the serial console. I've had a google around and it looks like this combination should work. At least, I can't find anything forbidding it and can find some dmesgs showing both ACPI and SMBus. The relevant sections of a GENERIC "boot -v" shows: ... AcpiOsDerivePciId: bus 0 dev 17 func 0 AcpiOsDerivePciId: bus 0 dev 17 func 0 ... found-> vendor=0x1106, dev=0x3147, revid=0x00 bus=0, slot=17, func=0 class=06-01-00, hdrtype=0x00, mfdev=1 cmdreg=0x0087, statreg=0x0210, cachelnsz=0 (dwords) lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns) powerspec 2 supports D0 D3 current D0 map[20]: type 4, range 32, base 0000fc00, size 4, enabled ... pci1: <display, VGA> at device 0.0 (no driver attached) pci0: <multimedia, audio> at device 8.0 (no driver attached) pci0: <multimedia> at device 11.0 (no driver attached) isab0: <PCI-ISA bridge> at device 17.0 on pci0 isa0: <ISA bus> on isab0 atapci0: <VIA 8233A UDMA133 controller> port 0xfc00-0xfc0f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 17.1 on pci0 If I add the following options to GENERIC: device smbus device viapm device smb device iicbb device iicbus then the ISA bus vanishes and the above probe messages change to: ... pci1: <display, VGA> at device 0.0 (no driver attached) pci0: <multimedia, audio> at device 8.0 (no driver attached) pci0: <multimedia> at device 11.0 (no driver attached) viapropm0: SMBus I/O base at 0x400 viapropm0: <VIA VT8233 Power Management Unit> port 0x400-0x40f at device 17.0 on pci0 viapropm0: SMBus revision code 0x0 smbus0: <System Management Bus> on viapropm0 smb0: <SMBus generic I/O> on smbus0 atapci0: <VIA 8233A UDMA133 controller> port 0xfc00-0xfc0f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 17.1 on pci0 I can't get ACPI running properly in 4.x but I can have both SMBus and ACPI loaded and dmesg shows: ... viapropm0: SMBus I/O base at 0x400 viapropm0: <VIA VT8233 Power Management Unit> port 0x400-0x40f at device 17.0 on pci0 viapropm0: SMBus revision code 0x0 smb0: <SMBus general purpose I/O> on smbus0 ... isa0: <ISA bus> on motherboard The motherboard is a Gigabyte GA-7VRXP with F12 BIOS (the latest AFAIK). Switching between PIC and APIC modes in the BIOS has no effect. There's no explicit "PnP/nonPnP" option. Should this work? If so, where should I look for clues as to why it doesn't for me? -- Peter Jeremy
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