Date: Thu, 1 Sep 2011 01:27:09 +0400 From: Sergey Kandaurov <pluknet@gmail.com> To: John Baldwin <jhb@freebsd.org> Cc: stable@freebsd.org Subject: Re: mfi(4) patch to add MSI-X support, possibly address command timeouts Message-ID: <CAE-mSOK8Cx=PKz65Wh52qcauPEitqNmjvZhhgxH_fsaoKzhvZg@mail.gmail.com> In-Reply-To: <201108311717.03127.jhb@freebsd.org> References: <201108311334.10804.jhb@freebsd.org> <CAE-mSO%2B=RZABD-xxLHkda%2B0JkMypAibMAAbPh23=fQRL9gKXMA@mail.gmail.com> <201108311717.03127.jhb@freebsd.org>
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On 1 September 2011 01:17, John Baldwin <jhb@freebsd.org> wrote: > On Wednesday, August 31, 2011 3:24:12 pm Sergey Kandaurov wrote: >> On 31 August 2011 21:34, John Baldwin <jhb@freebsd.org> wrote: >> > I'd like some folks to test a patch to the mfi(4) driver that may help= to >> > address issues several folks have reported. =A0The patch does two thin= gs, first >> > it adds some dummy reads of PCI registers when checking device status = in the >> > interrupt handler to "flush" the writes to ACK interrupts. =A0The Linu= x >> > megaraid-sas driver uses this approach and some folks have tested a pa= tch from >> > Scott Long which had a somewhat similar effect. =A0Second, it enables = the use of >> > MSI-X interrupts for many newer devices. >> > >> > The patch is available below and at www.freebsd.org/~jhb/patches/mfi.p= atch >> >> mfi0: <LSI MegaSAS Gen2> port 0x3000-0x30ff mem >> 0x9dd40000-0x9dd43fff,0x9dd00000-0x9dd3ffff irq 26 at device 0.0 on >> pci26 >> mfi0: Using MSI-X >> mfi0: Megaraid SAS driver Ver 3.00 >> >> However, booting never finishes ending up with: >> mfi0: COMMAND 0xffffff8000b3a550 TIMEOUT AFTER 58 SECONDS >> mfi0: COMMAND 0xffffff8000b3a550 TIMEOUT AFTER 88 SECONDS >> mfi0: COMMAND 0xffffff8000b3a550 TIMEOUT AFTER 118 SECONDS >> mfi0: COMMAND 0xffffff8000b3a550 TIMEOUT AFTER 148 SECONDS >> mfi0: COMMAND 0xffffff8000b3a550 TIMEOUT AFTER 179 SECONDS >> mfi0: COMMAND 0xffffff8000b3a550 TIMEOUT AFTER 209 SECONDS > > Did this work fine without the patch? Yes, like a charm. > > Also, does it work fine if you disable MSI-X via 'hw.pci.enable_msix=3D0' > in the loader? I will try this tomorrow. Thanks. --=20 wbr, pluknet
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