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From: Christian Zigotzky <chzigotzky@xenosoft.de>
To: Michael Ellerman <mpe@ellerman.id.au>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Darren Stevens <darren@stevens-zone.net>,
	"contact@a-eon.com" <contact@a-eon.com>,
	"R.T.Dickinson" <rtd2@xtra.co.nz>,
	mad skateman <madskateman@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	linuxppc-dev@lists.ozlabs.org
Subject: Bug 205201 - overflow of DMA mask and bus mask
Date: Tue, 5 Nov 2019 08:50:34 +0100	[thread overview]
Message-ID: <22f58dae-4e30-076a-8479-b57b40098cd6@xenosoft.de> (raw)
In-Reply-To: <668ae8d5-f9f9-6304-d389-a854da53c2d2@xenosoft.de>

Hi All,

We still have DMA problems with some PCI devices. Since the PowerPC 
updates 4.21-1 [1] we need to decrease the RAM to 3500MB (mem=3500M) if 
we want to work with our PCI devices. The FSL P5020 and P5040 have these 
problems currently.

Error message:

[   25.654852] bttv 1000:04:05.0: overflow 0x00000000fe077000+4096 of 
DMA mask ffffffff bus mask df000000

All 5.x Linux kernels can't initialize a SCSI PCI card anymore so 
booting of a Linux userland isn't possible.

PLEASE check the DMA changes in the PowerPC updates 4.21-1 [1]. The 
kernel 4.20 works with all PCI devices without limitation of RAM.

We created a bug report a month ago. [2]

Thanks,
Christian

[1] 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8d6973327ee84c2f40dd9efd8928d4a1186c96e2
[2] https://bugzilla.kernel.org/show_bug.cgi?id=205201



  reply	other threads:[~2019-11-05  7:53 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <7b549219-a2e1-08c7-331b-9c3e4fdb8a8f@xenosoft.de>
     [not found] ` <3aeae0d8-e9be-2585-cbbd-70263cb495f1@xenosoft.de>
     [not found]   ` <20191015125105.GU25745@shell.armlinux.org.uk>
     [not found]     ` <5611f3bc-68aa-78ec-182a-1cb414202314@xenosoft.de>
     [not found]       ` <20191015131750.GV25745@shell.armlinux.org.uk>
2019-10-23  5:42         ` Onboard SD card doesn't work anymore after the 'mmc-v5.4-2' updates Michael Ellerman
2019-10-23  6:41           ` Benjamin Herrenschmidt
2019-10-23 13:52             ` Rob Herring
2019-10-23 14:12               ` Russell King - ARM Linux admin
2019-10-23 14:31               ` Russell King - ARM Linux admin
2019-10-25 22:28                 ` Rob Herring
2019-10-26  6:39                   ` Christoph Hellwig
2019-10-28  8:47                     ` Benjamin Herrenschmidt
2019-10-28  8:45                   ` Benjamin Herrenschmidt
2019-10-23 14:20           ` Christian Zigotzky
2019-11-04 14:44             ` Christian Zigotzky
2019-11-05  7:50               ` Christian Zigotzky [this message]
2018-12-13 11:25 use generic DMA mapping code in powerpc V4 Christoph Hellwig
2018-12-13 13:34 ` Christian Zigotzky
2018-12-13 17:48   ` Christian Zigotzky
2018-12-13 21:53     ` Christian Zigotzky
2018-12-14 12:00       ` Christian Zigotzky
2019-01-03  7:36         ` Christoph Hellwig
2019-01-03 19:26           ` Christian Zigotzky
2019-01-05 16:03             ` Christian Zigotzky
2019-01-09  9:31               ` Christian Zigotzky
     [not found]                 ` <46025f1b-db20-ac23-7dcd-10bc43bbb6ee@xenosoft.de>
     [not found]                   ` <20191105162856.GA15402@lst.de>
2019-11-07  9:53                     ` Bug 205201 - overflow of DMA mask and bus mask Christian Zigotzky
2019-11-10  7:27                       ` Christian Zigotzky
2019-11-11  8:12                         ` Christian Zigotzky
2019-11-11  8:16                           ` Christian Zigotzky
2019-11-11 12:22                             ` Christian Zigotzky
2019-11-12 14:41                               ` Christoph Hellwig
2019-11-12 22:58                                 ` Christian Zigotzky
2019-11-13 10:14                                 ` Christian Zigotzky
2019-11-13 11:02                                   ` Christoph Hellwig

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