Date: Thu, 2 Aug 2012 16:58:41 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-stable@freebsd.org Cc: Alexander Motin <mav@freebsd.org>, Steve Polyack <korvus@comcast.net>, freebsd-hardware@freebsd.org Subject: Re: Problem detecting Sil3124 SATA controllers off of Sandy Bridge northbridge-connected PCIe slots Message-ID: <201208021658.41541.jhb@freebsd.org> In-Reply-To: <501AE488.1090001@comcast.net> References: <501A8CE0.4000800@comcast.net> <201208021358.59897.jhb@freebsd.org> <501AE488.1090001@comcast.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thursday, August 02, 2012 4:35:20 pm Steve Polyack wrote:
> On 08/02/2012 01:58 PM, John Baldwin wrote:
> > On Thursday, August 02, 2012 10:21:20 am Steve Polyack wrote:
> >> Hi,
> >>
> >> We're having some trouble with detection of a couple of Sil3124 SATA
> >> controller cards on newer motherboard and processor combos.
> >> Specifically, we're running a Supermicro X9SCM-F motherboard (latest
> >> BIOS) and Intel E3-1220v2 CPU.
> >>
> >> What we're seeing:
> >> - Syba Sil3124 PCIe cards are only being detected when installed in PCIe
> >> Slot 4
> >> -- The motherboard documentation shows that this is the only slot
> >> connected to the Intel C202/204 chipset on the motherboard
> >> -- Slots 5, 6, and 7 are connected to the integrated northbridge on the
> >> Ivy Bridge CPU
> >> (there is no slot 1, 2, or 3)
> >>
> >> FreeBSD won't detect even a single Sil3124 card installed in PCIe slot
> >> 5, 6, or 7. If we put an Intel Dual-port NIC in either of one of these
> >> slots, it is detected just fine.
> >>
> >> I've attached a verbose dmesg.boot from this box running FreeBSD
> >> 9.0-RELEASE. We've also tried 8.1-RELEASE, 8.2-RELEASE, and 9.1-BETA1
> >> with the same results. Booting with ACPI disabled results in a kernel
> >> panic during the boot process.
> >>
> >> I'd greatly appreciate any help or suggestions on this matter. We've
> >> already tried just about every BIOS option on the board.
> > Does the device show up in pciconf -l output?
> >
> The device itself does NOT show up in pciconf -l output. However, I ran
> pciconf on two different boots, once with and once without the card
> installed in one of the non-probed slots. I noticed that the following
> "Ivy Bridge PCI Express Root Port" showed up when the card was installed:
> +pcib2@pci0:0:1:1: class=0x060400 card=0x062415d9 chip=0x01558086
> rev=0x09 hdr=0x01
> + vendor = 'Intel Corporation'
> + device = 'Ivy Bridge PCI Express Root Port'
> + class = bridge
> + subclass = PCI-PCI
> + cap 0d[88] = PCI Bridge card=0x062415d9
> + cap 01[80] = powerspec 3 supports D0 D3 current D0
> + cap 05[90] = MSI supports 1 message
> + cap 10[a0] = PCI-Express 2 root port max data 128(128) link x1(x8)
> + ecap 0002[100] = VC 1 max VC0
> + ecap 0005[140] = unknown 1
> + ecap 0019[d94] = unknown 1
Oh, now I see the problem. This isn't completely trivial to solve. :(
pcib3: <PCI-PCI bridge> at device 0.0 on pci2
pcib2: attempting to grow I/O port window for (0-0xfff,0x1000)
pcib3: failed to allocate initial I/O port window: 0-0xfff
pcib2: attempting to grow memory window for (0-0xfffff,0x100000)
pcib3: failed to allocate initial memory window: 0-0xfffff
pcib2: failed to allocate initial prefetch window (0-0xfffff,0x100000)
pcib2: attempting to grow memory window for (0-0xfffff,0x100000)
pcib3: failed to allocate initial prefetch window: 0-0xfffff
pcib3: domain 0
pcib3: secondary bus 0
pcib3: subordinate bus 0
pcib3: no prefetched decode
This bridge isn't configured by the BIOS, so we can't see any devices behind
it. I have some patches to start adding support for fixing that, but they are
incomplete (and I haven't touched them in months). Try this hack as a test:
Index: sys/dev/pci/pci_pci.c
===================================================================
--- pci_pci.c (revision 238992)
+++ pci_pci.c (working copy)
@@ -566,6 +566,13 @@ pcib_attach_common(device_t dev)
SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "subbus",
CTLFLAG_RD, &sc->subbus, 0, "Subordinate bus number");
+ if (device_get_unit(dev) == 3 && sc->secbus == 0 && sc->subbus == 0) {
+ pci_write_config(dev, PCIR_SUBBUS_1, 3, 1);
+ pci_write_config(dev, PCIR_SECBUS_1, 3, 1);
+ sc->secbus = 3;
+ sc->subbus = 3;
+ }
+
/*
* Quirk handling.
*/
--
John Baldwin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201208021658.41541.jhb>