Date: Wed, 31 Aug 2011 17:17:03 -0400 From: John Baldwin <jhb@freebsd.org> To: Sergey Kandaurov <pluknet@gmail.com> Cc: stable@freebsd.org Subject: Re: mfi(4) patch to add MSI-X support, possibly address command timeouts Message-ID: <201108311717.03127.jhb@freebsd.org> In-Reply-To: <CAE-mSO%2B=RZABD-xxLHkda%2B0JkMypAibMAAbPh23=fQRL9gKXMA@mail.gmail.com> References: <201108311334.10804.jhb@freebsd.org> <CAE-mSO%2B=RZABD-xxLHkda%2B0JkMypAibMAAbPh23=fQRL9gKXMA@mail.gmail.com>
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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. The patch does two things, first > > it adds some dummy reads of PCI registers when checking device status in the > > interrupt handler to "flush" the writes to ACK interrupts. The Linux > > megaraid-sas driver uses this approach and some folks have tested a patch from > > Scott Long which had a somewhat similar effect. Second, 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.patch > > 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? Also, does it work fine if you disable MSI-X via 'hw.pci.enable_msix=0' in the loader? -- John Baldwin
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