Date: Thu, 29 Dec 2016 12:14:56 +0100 From: Harry Schmalzbauer <freebsd@omnilan.de> To: Alexander Motin <mav@freebsd.org> Cc: FreeBSD Stable <freebsd-stable@freebsd.org>, freebsd-virtualization@freebsd.org Subject: Re: ASM1062 AHCI timeouts, ppt(4) BAR aligning [Was: Re: svn commit: r309251 - head/sys/dev/ahci] Message-ID: <5864F030.4050204@omnilan.de> In-Reply-To: <8c37d73e-59dc-3ca2-cab0-941a525f4d44@FreeBSD.org> References: <201611281623.uASGNWoA056995@repo.freebsd.org> <5864CADD.6020805@omnilan.de> <8c37d73e-59dc-3ca2-cab0-941a525f4d44@FreeBSD.org>
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Bezüglich Alexander Motin's Nachricht vom 29.12.2016 11:32 (localtime): > On 29.12.2016 10:35, Harry Schmalzbauer wrote: >> I'd like to report that this doesn't fix timeouts for me (applied to >> 11-stable). >> >> For example my REV120 works without problems on Intel-AHCI but not on >> ASM1062-AHCI. >> Even attaching gives different output. Both look fine at first: >> # cd0 at ahcich0 bus 0 scbus5 target 0 lun 0 >> # cd0: <Iomega RRD3 M079> Removable CD-ROM SCSI device >> # cd0: Serial Number 0C1E4D046E5DFF18 >> # cd0: 150.000MB/s transfers (SATA 1.x, UDMA5, ATAPI 12bytes, PIO >> 8192bytes) >> >> When attached to the Intel-AHCI, it's followed by >> + cd0: Attempt to query device size failed: NOT READY, Medium not present >> while attaching to ASM1062 it reads (!?) >> - cd0: 0MB (1 0 byte sectors) >> >> Then these timeouts occur: >> ahcich7: Timeout on slot 11 port 0 >> ahcich7: is 00000000 cs 00000c00 ss 00000000 rs 00000c00 tfd 6051 serr >> 00000000 cmd 0004cb17 >> ahcich7: Timeout on slot 24 port 0 >> ahcich7: is 00000000 cs 01800000 ss 00000000 rs 01800000 tfd 2051 serr >> 00000000 cmd 0004d817 >> ahcich7: Timeout on slot 6 port 0 >> ahcich7: is 00000000 cs 00000060 ss 00000000 rs 00000060 tfd 2051 serr >> 00000000 cmd 0004c617 >> ahcich7: Timeout on slot 20 port 0 >> ahcich7: is 00000000 cs 00180000 ss 00000000 rs 00180000 tfd 2051 serr >> 00000000 cmd 0004d417 >> >> Also IDENT (via camcontrol) "hangs" for 20 seconds, but finally succeeds. > > I think problem may be different in your case. The HBA still reports > that command is not completed by the device. Unfortunately I don't have > those fancy drives to try, but I'll try to reproduce it with regular CD > drive when I get back home after short New Year holidays. Oic, then I need to test the patch with regular SSD usage! I have had problems with the asm1062 when I used it for a "roaming" SSD, backing virtio-blk/ahci,hd:/dev/ada4. After some mentionable I/O there were _always_ outages which I don't remember exactly, but moving the SSD from asm-ahci to intel-ahci made them vanish. I'll see if these are now solved for the ASM1062. Otherwise I'll report. >> Btw: I already found out that extending ppt(4) to support unaligned base >> address register wouldn't be too easy. >> Initially I added that ASM1062 card to use it for byhve(8) passthrough. >> Unfortunately that doesn't work: >> bhyve: passthru device 6/0/0 BAR 5: base 0xc3e10000 or size 0x200 not … > > I believe it is bhyve bug, since these values are just what hardware > reports. BAR size of 512 bytes indeed does not align to 4K, but that is > not our problem. :) > >> Are there any recommendations for AHCI (SATA-PCIe) controller >> cards/chips that do work (both, for byhve passthrough and also as plain >> AHCI provider)? > > Please don't mix multiple unrelated questions in one email. Yes, sorry, I should have sent that in two different mails. Took the wrong route because I thought others who are possibly searching/trying low-power SATA passthrough controllers could find this (useful)... > There is very little reasonable external AHCI controllers on the market > now. I am not sure anything other then Marvell and ASmedia were > released at all in last years since 6Gbps SATA came out. Marvell and > ASmedia probably worth each other, while later Marvell may be slightly > better on functionality (number of ports and FBS PMP support), but they > are both desktop products. If you need this in server environment -- > think about about SAS adapter like LSI. Or just use on-board Intel > AHCI, since they are probably the best om reliability you may get out of > SATA. Thanks for your hints! Usually I go with LSI2008 for such cases, but this time the additional 7W power consumption for only _one_ roaming SATA-SSD seemd inappropriate. Furthermore, I only have one spare slot, so I got a card with the ASM1062 and an Etron EJ168 USB 3.0 combined. That was exactly what I'd want to have as passthrough for my guest :-) Hopefully bhyve(8)/ppt will make that possible in the future. Thanks, -harry
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