Hi Ted,
thanks for the dmesg. This shows your HBA doesn't even support the
odd 39-bit addressing. Now the real question is why we don't use
swiotlb. For that I'd like to see the whole dmesg from the very
beinning if you have it. Also it seems this boot didn't have the
WARN_ON_ONCE I sent you as the second patch.
On Fri, Oct 12, 2018 at 10:37:40PM -0400, tedheadster wrote:
> > That isn't a limit, just a reporting clause - the real check is this
> > line a little above:
> >
> > if (unlikely(dev && !dma_capable(dev, dma_addr, size))) {
> >
> > which is purely based on the dma mask. So for some reason we must
> > be in 32-bit only mode for the dma-mask, and not actually enabling
> > swiotlb. And thinking more about it the latter is what is really odd,
> > we should always enable swiotlb for systems with 4GB memory. I'll
> > defintivetly wait for your dmesg!
>
> Christoph,
> here is the dmesg output. It does not successfully boot.
>
> [ 16.527021] aic7xxx: large SCBS not supported
> [ 21.984104] scsi host0: Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 7.0
> [ 21.984104] <Adaptec aic7892 Ultra160 SCSI adapter>
> [ 21.984104] aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
> [ 21.984104]
> [ 22.012511] scsi 0:0:0:0: Direct-Access SEAGATE ST373454LC
> D403 PQ: 0 ANSI: 3
> [ 22.020995] scsi0:A:0:0:
> [ 22.020997] Tagged Queuing enabled. Depth 32
> [ 22.028503] scsi target0:0:0: Beginning Domain Validation
> [ 22.037780] scsi target0:0:0: wide asynchronous
> [ 22.045276] scsi target0:0:0: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5
> ns, offset 63)
> [ 22.056417] scsi 0:0:0:0: Power-on or device reset occurred
> [ 22.065532] scsi target0:0:0: Ending Domain Validation
> [ 22.104034] scsi 0:0:1:0: Direct-Access FUJITSU MAW3147NC
> 0104 PQ: 0 ANSI: 3
> [ 22.112535] scsi0:A:1:0:
> [ 22.112538] Tagged Queuing enabled. Depth 32
> [ 22.120056] scsi target0:0:1: Beginning Domain Validation
> [ 22.129058] scsi target0:0:1: wide asynchronous
> [ 22.136422] scsi target0:0:1: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5
> ns, offset 127)
> [ 22.152111] scsi 0:0:1:0: Power-on or device reset occurred
> [ 22.161065] scsi target0:0:1: Ending Domain Validation
> [ 22.188449] scsi 0:0:2:0: Direct-Access IBM
> IC35L073UCDY10-0 S27N PQ: 0 ANSI: 3
> [ 22.196952] scsi0:A:2:0:
> [ 22.196955] Tagged Queuing enabled. Depth 32
> [ 22.204460] scsi target0:0:2: Beginning Domain Validation
> [ 22.222059] random: fast init done
> [ 22.225725] scsi target0:0:2: wide asynchronous
> [ 22.231731] scsi target0:0:2: FAST-20 WIDE SCSI 40.0 MB/s ST (50
> ns, offset 8)
> [ 22.240024] scsi target0:0:2: Domain Validation skipping write tests
> [ 22.246600] scsi target0:0:2: Ending Domain Validation
> [ 22.284567] scsi 0:0:3:0: Direct-Access IBM
> IC35L073UCDY10-0 S27N PQ: 0 ANSI: 3
> [ 22.293069] scsi0:A:3:0:
> [ 22.293072] Tagged Queuing enabled. Depth 32
> [ 22.300583] scsi target0:0:3: Beginning Domain Validation
> [ 22.328612] scsi target0:0:3: wide asynchronous
> [ 22.334718] scsi target0:0:3: FAST-20 WIDE SCSI 40.0 MB/s ST (50
> ns, offset 8)
> [ 22.343006] scsi target0:0:3: Domain Validation skipping write tests
> [ 22.349589] scsi target0:0:3: Ending Domain Validation
> [ 22.901684] scsi 0:0:6:0: Processor PE/PV 1x5 SCSI BP
> 1.1 PQ: 0 ANSI: 2
> [ 22.910273] scsi target0:0:6: Beginning Domain Validation
> [ 22.939101] scsi target0:0:6: Ending Domain Validation
> [ 25.096168] sd 0:0:0:0: [sda] 143374650 512-byte logical blocks:
> (73.4 GB/68.4 GiB)
> [ 25.096225] sd 0:0:1:0: [sdb] 287277984 512-byte logical blocks:
> (147 GB/137 GiB)
> [ 25.107747] sd 0:0:2:0: Power-on or device reset occurred
> [ 25.139537] sd 0:0:3:0: Power-on or device reset occurred
> [ 25.145255] sd 0:0:0:0: [sda] Write Protect is off
> [ 25.145278] sd 0:0:1:0: [sdb] Write Protect is off
> [ 25.145643] scsi host1: pata_serverworks
> [ 25.177180] sd 0:0:2:0: [sdc] 143374805 512-byte logical blocks:
> (73.4 GB/68.4 GiB)
> [ 25.177240] sd 0:0:3:0: [sdd] 143374805 512-byte logical blocks:
> (73.4 GB/68.4 GiB)
> [ 25.178429] sd 0:0:1:0: [sdb] Write cache: disabled, read cache:
> enabled, doesn't support DPO or FUA
> [ 25.189353] sd 0:0:0:0: [sda] Write cache: disabled, read cache:
> enabled, supports DPO and FUA
> [ 25.200252] scsi host2: pata_serverworks
> [ 25.202942] sd 0:0:3:0: [sdd] Write Protect is off
> [ 25.202953] sd 0:0:2:0: [sdc] Write Protect is off
> [ 25.213855] ata1: PATA max UDMA/100 cmd 0x1f0 ctl 0x3f6 bmdma 0x8b0 irq 14
> [ 25.247030] sd 0:0:2:0: [sdc] Write cache: disabled, read cache:
> enabled, doesn't support DPO or FUA
> [ 25.247037] ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0x8b8 irq 15
> [ 25.278937] sd 0:0:3:0: [sdd] Write cache: disabled, read cache:
> enabled, doesn't support DPO or FUA
> [ 25.300661] sdb: sdb1
> [ 25.406317] sda: sda1 sda2
> [ 25.409465] sdc: sdc1
> [ 25.474427] sd 0:0:1:0: [sdb] Attached SCSI disk
> [ 25.475141] sdd: sdd1
> [ 25.486165] sd 0:0:2:0: [sdc] Attached SCSI disk
> [ 25.529044] sd 0:0:0:0: [sda] Attached SCSI disk
> [ 25.530061] sd 0:0:3:0: [sdd] Attached SCSI disk
> [ 25.537753] scsi 1:0:0:0: CD-ROM HL-DT-ST RW/DVD
> GCC-4243N A102 PQ: 0 ANSI: 5
> [ 25.963649] EXT4-fs (sda2): mounting ext3 file system using the
> ext4 subsystem
> [ 26.206768] EXT4-fs (sda2): mounted filesystem with ordered data
> mode. Opts: (null)
> [ 26.214856] VFS: Mounted root (ext3 filesystem) readonly on device 8:2.
> [ 26.274864] devtmpfs: mounted
> [ 26.278548] Freeing unused kernel image memory: 500K
> [ 26.283885] Write protecting the kernel text: 3540k
> [ 26.289142] Write protecting the kernel read-only data: 1976k
> [ 27.895223] random: crng init done
> [ 28.369523] aic7xxx 0000:00:03.0: dma_direct_map_sg: overflow
> 0x00000003ff800000+65536 of device mask ffffffff
> [ 28.424016] aic7xxx 0000:00:03.0: dma_direct_map_sg: overflow
> 0x00000003ff800000+65536 of device mask ffffffff
> [ 28.480015] aic7xxx 0000:00:03.0: dma_direct_map_sg: overflow
> 0x00000003ff800000+65536 of device mask ffffffff
> [ 28.536015] aic7xxx 0000:00:03.0: dma_direct_map_sg: overflow
> 0x00000003ff800000+65536 of device mask ffffffff
>
> - Matthew
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