linux-kernel - Re: PCI device driver broken between 4.2 and 4.3

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Date:	Thu, 28 Jan 2016 22:28:14 +0300
From:	Мороз Олег <oleg.moroz@....vniiem.ru>
To:	Bjorn Helgaas <helgaas@...nel.org>
Cc:	"	linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Jiang Liu <jiang.liu@...ux.intel.com>,
	" linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>
Subject: Re: PCI device driver broken between 4.2 and 4.3

What i need to print out at first order? 27 янв. 2016 г. 16:22 пользователь Bjorn Helgaas <helgaas@...nel.org> написал:
>
> On Wed, Jan 27, 2016 at 12:38:06PM +0300, Мороз Олег wrote: 
> > Also, my drive has no 
> > 
> > pcibios_enable_device() 
> > pcibios_alloc_irq() 
> > 
> > calls. 
>
> Those are internal interfaces used by the PCI core.  Drivers shouldn't 
> call them directly.  Drivers normally call pci_enable_device(), and 
> those internal interfaces are used in that path. 
>
> > 26.01.2016 22:05, Олег Мороз пишет: 
> > >I confirmed it works in 
> > > 
> > >890e4847587f 
> > > 
> > >and do not works in 
> > > 
> > >991de2e59090 
> > > 
> > >26.01.2016 18:32, Bjorn Helgaas пишет: 
> > >>[+cc Jiang] 
> > >> 
> > >>On Mon, Jan 25, 2016 at 03:52:51PM -0600, Bjorn Helgaas wrote: 
> > >>>Hi Олег, 
> > >>> 
> > >>>On Sun, Jan 24, 2016 at 04:50:08PM +0300, Олег Мороз wrote: 
> > >>>>Okay. I've sent logs (dmesg and lspci) from both 4.2 and 4.3 
> > >>>>to bugzilla 
> > >>>I don't see anything wrong in either log.  Both v4.2 and v4.3 
> > >>>enumerate the device the same way, and the driver seems to claim it 
> > >>>the same way: 
> > >>> 
> > >>>   pci 0000:0d:00.0: [10b5:9030] type 00 class 0x078000 
> > >>>   pci 0000:0d:00.0: reg 0x14: [io  0x2100-0x217f] 
> > >>>   pci 0000:0d:00.0: reg 0x18: [io  0x2380-0x239f] 
> > >>>   pci 0000:0d:00.0: PME# supported from D0 D3hot 
> > >>>   pci 0000:0d:01.0: [10b5:9030] type 00 class 0x078000 
> > >>>   pci 0000:0d:01.0: reg 0x14: [io  0x2180-0x21ff] 
> > >>>   pci 0000:0d:01.0: reg 0x18: [io  0x23a0-0x23bf] 
> > >>>   pci 0000:0d:01.0: PME# supported from D0 D3hot 
> > >>>   pci 0000:0d:02.0: [10b5:9030] type 00 class 0x078000 
> > >>>   pci 0000:0d:02.0: reg 0x14: [io  0x2200-0x227f] 
> > >>>   pci 0000:0d:02.0: reg 0x18: [io  0x2280-0x22ff] 
> > >>>   pci 0000:0d:02.0: reg 0x1c: [io  0x2300-0x237f] 
> > >>>   pci 0000:0d:02.0: PME# supported from D0 D3hot 
> > >>> 
> > >>>   sja1000_plx_pci 0000:0d:02.0: Detected "Eclus CAN-200-PCI" 
> > >>>card at slot #2 
> > >>>   sja1000_plx_pci 0000:0d:02.0: Channel #1 at 
> > >>>0x0000000000012280, irq 22 registered as can0 
> > >>>   sja1000_plx_pci 0000:0d:02.0: Channel #2 at 
> > >>>0x0000000000012300, irq 22 registered as can1 
> > >>>   sja1000_plx_pci 0000:0d:02.0 can0: setting BTR0=0x03 BTR1=0x37 
> > >>> 
> > >>>One option is always to bisect between v4.2 and v4.3 to see which 
> > >>>commit made it stop working.  See https://git-scm.com/docs/git-bisect 
> > >>Jiang, Олег bisected this to 991de2e59090 ("PCI, x86: Implement 
> > >>pcibios_alloc_irq() and pcibios_free_irq()"). 
> > >> 
> > >>Олег, please double-check and confirm that 890e4847587f works and 
> > >>991de2e59090 fails. 
> > >> 
> > >>Then please add some printks in the pcibios_enable_device() and 
> > >>pcibios_alloc_irq() paths and in your driver to see exactly what changed 
> > >>between 890e4847587f and 991de2e59090 
> > >> 
> > >>Bjorn 
> > >> 
> > >>>>23.01.2016 17:54, Bjorn Helgaas пишет: 
> > >>>>>[+cc linux-kernel] 
> > >>>>> 
> > >>>>>Hi Олег, 
> > >>>>> 
> > >>>>>On Sat, Jan 23, 2016 at 1:08 AM, Олег Мороз 
> > >>>>><oleg.moroz@....vniiem.ru> wrote: 
> > >>>>>>Hello. I've got a device driver for MIL-1553b card 
> > >>>>>>called TA1-PCI, which 
> > >>>>>>could be found at 
> > >>>>>>https://github.com/qmor/elcus-1553-driver-linux 
> > >>>>>>Card is using PLX_PCI9030 PCI controller. 
> > >>>>>>Today i've found that this driver compiles, installes, 
> > >>>>>>but is not working as 
> > >>>>>>it should. 
> > >>>>>>Looks like it not receives any interrupts from PCI. I've 
> > >>>>>>test it again with 
> > >>>>>>kernel 
> > >>>>>>4.2 and it works okay. What changes was made in PCI 
> > >>>>>>subsystem from 4.2 to 
> > >>>>>>4.3 
> > >>>>>>which could have impact this driver work. 
> > >>>>>Thank you very much for this problem report.  There were many PCI 
> > >>>>>changes between v4.2 and v4.3, and without more information, I can't 
> > >>>>>guess what might be causing this problem. 
> > >>>>> 
> > >>>>>I opened a bug report at 
> > >>>>>https://bugzilla.kernel.org/show_bug.cgi?id=111211 
> > >>>>> 
> > >>>>>Please attach complete dmesg logs for both v4.2 and v4.3 to that bug 
> > >>>>>report.  Also, please attach the complete "lspci -vv" output (as 
> > >>>>>root). 
> > >>>>> 
> > >>>>>Thanks! 
> > >>>>> 
> > >>>>>Bjorn 
> > >>>>-- 
> > >>>>To unsubscribe from this list: send the line "unsubscribe 
> > >>>>linux-pci" in 
> > >>>>the body of a message to majordomo@...r.kernel.org 
> > >>>>More majordomo info at http://vger.kernel.org/majordomo-info.html 
> > >>>-- 
> > >>>To unsubscribe from this list: send the line "unsubscribe linux-pci" in 
> > >>>the body of a message to majordomo@...r.kernel.org 
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> > > 
> > 
> > -- 
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