Re: kern/55115 (siisata(4) broken after enabling MSI support)

["John D. Baker" <jdbaker%consolidated.net@localhost>]

The following reply was made to PR kern/55115; it has been noted by GNATS.

From: "John D. Baker" <jdbaker%consolidated.net@localhost>
To: "gnats-bugs%NetBSD.org@localhost" <gnats-bugs%netbsd.org@localhost>
Cc: 
Subject: Re: kern/55115 (siisata(4) broken after enabling MSI support)
Date: Sat, 28 Mar 2020 11:51:42 -0500 (CDT)

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 No Reply-to:, so not originally sent to gnats...
 
 On Sat, 28 Mar 2020, Jarom=C3=ADr Dole=C4~Mek wrote:
 
 > I think it's unlikely it's board problem (wm0 is using MSI and works),
 
 I wrote nearly the same thing before I saw this message.
 
 > but perhaps worth checking if by change there would be any BIOS
 > settings enabling MSI just for particular slots.
 
 I'll take a look when I next get a chance.
 
 > Another option would be to simply disable MSI for Sii3124. It's an old
 > chip used for old PCI/PCI-X cards, so not much of those left in wild.
 
 That explains a lot.  I should have included more in the relevant snippet
 of dmesg.  My SiI3124 is a 1x PCIe card, but it's the PCI/PCI-X chip behind
 a PCIe-PCI reverse bridge:
 
 [...]
 ppb4 at pci4 dev 0 function 0: Pericom Semiconductors PI7C9X111SL PCIe to P=
 CI Reverse Bridge (rev. 0x02)
 ppb4: PCI Express capability version 1 <PCI-E to PCI/PCI-X Bridge>
 pci5 at ppb4 bus 5
 pci5: i/o space, memory space enabled, rd/line, wr/inv ok
 siisata0 at pci5 dev 4 function 0: CMD Technology SiI3124 SATALink (rev. 0x=
 02)
 siisata0: interrupting at ioapic0 pin 19
 siisata0: SiI3124, 3.0Gb/s
 siisata0: 32-bit 66MHz PCI
 [...]
 
 See also my message about slot placement.
 
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