Re: [Xen-devel] PCI passthrough stopped working, brainache!

["Taylor, Neal E" <Neal.Taylor@xxxxxx>]

Konrad,

Thanks for the patch but all I'm getting from the patch is:

Dec  6 19:40:30 Gridos_Node kernel: [  220.270179] SWIOTLB is 0% full
Dec  6 19:40:35 Gridos_Node kernel: [  225.270172] SWIOTLB is 0% full
Dec  6 19:40:40 Gridos_Node kernel: [  230.270179] SWIOTLB is 0% full
Dec  6 19:40:45 Gridos_Node kernel: [  235.270174] SWIOTLB is 0% full
Dec  6 19:40:50 Gridos_Node kernel: [  240.270179] SWIOTLB is 0% full
Dec  6 19:40:55 Gridos_Node kernel: [  245.270169] SWIOTLB is 0% full
Dec  6 19:41:00 Gridos_Node kernel: [  250.270178] SWIOTLB is 0% full
Dec  6 19:41:05 Gridos_Node kernel: [  255.270181] SWIOTLB is 0% full
Dec  6 19:41:10 Gridos_Node kernel: [  260.270181] SWIOTLB is 0% full
Dec  6 19:41:15 Gridos_Node kernel: [  265.270171] SWIOTLB is 0% full

I was hoping my problem was related but it looks like "not close enough." My 
issue is with the "failed to set dma mask" and others like it in the log 
segment below. The "Fusion MPT SPI Host driver 3.04.19" believes it is able to 
support dma, but nothing after it does. 

Dec  6 19:37:37 Gridos_Node kernel: Fusion MPT SAS Host driver 3.04.19
Dec  6 19:37:37 Gridos_Node kernel: ata_piix 0000:00:1f.1: enabling device 
(0005 -> 0007)
Dec  6 19:37:37 Gridos_Node kernel: ata_piix 0000:00:1f.1: can't derive routing 
for PCI INT A

Dec  6 19:37:37 Gridos_Node kernel: ata_piix 0000:00:1f.1: BMDMA: failed to set 
dma mask, falling back to PIO

Dec  6 19:37:37 Gridos_Node kernel: scsi1 : ata_piix
Dec  6 19:37:37 Gridos_Node kernel: scsi2 : ata_piix
Dec  6 19:37:37 Gridos_Node kernel: ata1: PATA max PIO4 cmd 0x1f0 ctl 0x3f6 
bmdma 0xfc00 irq 14
Dec  6 19:37:37 Gridos_Node kernel: ata2: PATA max PIO4 cmd 0x170 ctl 0x376 
bmdma 0xfc08 irq 15
Dec  6 19:37:37 Gridos_Node kernel: ata1.00: ATAPI: PHILIPS DVD-ROM SDR089, 
TD36, max UDMA/33
Dec  6 19:37:37 Gridos_Node kernel: ata1.00: configured for PIO4
Dec  6 19:37:37 Gridos_Node kernel: scsi 1:0:0:0: CD-ROM            PHILIPS  
DVD-ROM SDR089   TD36 PQ: 0 ANSI: 5
Dec  6 19:37:37 Gridos_Node kernel: 0 mptspi 0000:02:05.0 alloc coherent: 57, 
free: 56
Dec  6 19:37:37 Gridos_Node kernel: 1 mptspi 0000:02:05.0 alloc coherent: 3, 
free: 0
Dec  6 19:37:37 Gridos_Node kernel: SWIOTLB is 0% full
Dec  6 19:37:37 Gridos_Node kernel: SWIOTLB is 0% full
Dec  6 19:37:37 Gridos_Node kernel: EXT3-fs: barriers not enabled
Dec  6 19:37:37 Gridos_Node kernel: kjournald starting.  Commit interval 5 
seconds
Dec  6 19:37:37 Gridos_Node kernel: EXT3-fs (sda3): mounted filesystem with 
ordered data mode
Dec  6 19:37:37 Gridos_Node kernel: SWIOTLB is 0% full
Dec  6 19:37:37 Gridos_Node kernel: input: PC Speaker as 
/devices/platform/pcspkr/input/input2
Dec  6 19:37:37 Gridos_Node kernel: iTCO_vendor_support: vendor-support=0
Dec  6 19:37:37 Gridos_Node kernel: iTCO_wdt: Intel TCO WatchDog Timer Driver 
v1.06
Dec  6 19:37:37 Gridos_Node kernel: iTCO_wdt: Found a ICH5 or ICH5R TCO device 
(Version=1, TCOBASE=0x0860)
Dec  6 19:37:37 Gridos_Node kernel: iTCO_wdt: initialized. heartbeat=30 sec 
(nowayout=1)
Dec  6 19:37:37 Gridos_Node kernel: pata_acpi 0000:09:06.0: PCI INT A -> GSI 23 
(level, low) -> IRQ 23
Dec  6 19:37:37 Gridos_Node kernel: pata_acpi 0000:09:06.0: BMDMA: failed to 
set dma mask, falling back to PIO
Dec  6 19:37:37 Gridos_Node kernel: pata_acpi 0000:09:06.0: PCI INT A disabled
Dec  6 19:37:37 Gridos_Node kernel: FDC 0 is a National Semiconductor PC87306
Dec  6 19:37:37 Gridos_Node kernel: xen_map_pirq_gsi: returning irq 23 for gsi 
23
Dec  6 19:37:38 Gridos_Node kernel: Already setup the GSI :23
Dec  6 19:37:38 Gridos_Node kernel: pata_sil680 0000:09:06.0: PCI INT A -> GSI 
23 (level, low) -> IRQ 23
Dec  6 19:37:38 Gridos_Node kernel: sil680: 133MHz clock.

Dec  6 19:37:38 Gridos_Node kernel: pata_sil680 0000:09:06.0: BMDMA: failed to 
set dma mask, falling back to PIO

neal

-----Original Message-----
From: Konrad Rzeszutek Wilk [mailto:konrad@xxxxxxxxxx] 
Sent: Monday, December 05, 2011 1:09 PM
To: Taylor, Neal E
Cc: Ian Campbell; Andy Burns; xen-devel
Subject: Re: [Xen-devel] PCI passthrough stopped working, brainache!

On Mon, Dec 05, 2011 at 04:10:39PM +0000, Taylor, Neal E wrote:
> Andy,
> 
> Did I mess the solution for this or are you still working with 'mem=3.99999G'?
> 
.. snip..
> 
> Konrad had some suggestions in
> <20111020034000.GA2401@xxxxxxxxxxxxxxxxxxx> which would be worth trying.
> (that mail was sent on Thursday but appears to have sat in a queue 
> somewhere until after you sent this mail so just checking you've seen 
> it).
> 

.. which resolves itself to:

http://article.gmane.org/gmane.comp.emulators.xen.devel/114063

and in 3). I mentioned a patch. See attached please

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