From: Michael Schmitz <schmitzmic@gmail.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Tuomas Vainikka <tuomas.vainikka@aalto.fi>,
Linux/m68k <linux-m68k@vger.kernel.org>
Subject: Re: [PATCH 0/2] Experimental Amiga Zorro ESP driver
Date: Mon, 19 Aug 2013 20:48:24 +1200 [thread overview]
Message-ID: <5211DBD8.5090801@gmail.com> (raw)
In-Reply-To: <CAMuHMdWqNBjHKiDojPdjzuOV65QXzjeMX5VbtUvgU7VTP4iYFg@mail.gmail.com>
Geert,
> On Sun, Aug 18, 2013 at 10:58 AM, Michael Schmitz <schmitzmic@gmail.com> wrote:
>
>> I'll also need to check the command_block and command_block_dma addresses -
>> does the DMA require virtual or physical addresses?
>>
>
> Physical, of course.
>
:-) VDMA was invented a bit later ...
I'll go check the usage of the DMA API calls again, but as the driver
seems to do DMA fine until the short transfer, that seems the most
likely cause. PIO for dma_count < 7 might be an option.
I see transfers with esp_count=1 and dma_count=7 in the log - wonder why
that works but the short 2/2 byte case does not.
Cheers,
Michael
next prev parent reply other threads:[~2013-08-19 8:48 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-06 20:56 [PATCH 0/2] Experimental Amiga Zorro ESP driver Michael Schmitz
2013-06-06 20:56 ` [PATCH 1/2] m68k/amiga - Zorro ESP SCSI Makefile/Kconfig support Michael Schmitz
2013-06-06 20:56 ` [PATCH 2/2] m68k/amiga - Zorro ESP: convert old driver to ESP core Michael Schmitz
2013-08-15 21:40 ` [PATCH 0/2] Experimental Amiga Zorro ESP driver Tuomas Vainikka
2013-08-16 19:01 ` Tuomas Vainikka
2013-08-17 1:49 ` Michael Schmitz
2013-08-17 11:33 ` Tuomas Vainikka
2013-08-18 2:05 ` Michael Schmitz
2013-08-18 8:23 ` Geert Uytterhoeven
2013-08-18 8:58 ` Michael Schmitz
2013-08-18 9:10 ` Geert Uytterhoeven
2013-08-19 8:48 ` Michael Schmitz [this message]
2013-08-19 11:47 ` Tuomas Vainikka
2013-08-19 12:01 ` Geert Uytterhoeven
2013-08-19 20:46 ` Tuomas Vainikka
2013-08-20 9:36 ` Michael Schmitz
2013-08-20 10:00 ` Tuomas Vainikka
2013-08-22 20:34 ` Michael Schmitz
2013-08-31 10:37 ` Tuomas Vainikka
2013-09-10 21:13 ` Tuomas Vainikka
2013-09-11 10:12 ` Michael Schmitz
2013-09-11 13:08 ` Tuomas Vainikka
2013-09-11 20:14 ` Tuomas Vainikka
2013-09-26 13:44 ` Michael Schmitz
2013-09-26 14:04 ` Tuomas Vainikka
2013-09-27 9:17 ` Michael Schmitz
2013-09-11 14:48 ` Geert Uytterhoeven
2013-09-12 15:36 ` esp_scsi QTAG in FAS216 (was Re: [PATCH 0/2] Experimental Amiga Zorro ESP driver) Tuomas Vainikka
2013-09-26 13:50 ` Michael Schmitz
2014-04-04 20:28 ` esp_scsi QTAG in FAS216 David Miller
2014-04-06 20:33 ` Michael Schmitz
2014-04-07 3:39 ` David Miller
2014-04-10 14:31 ` Kars de Jong
2014-04-11 1:47 ` Michael Schmitz
2014-04-13 14:47 ` Kars de Jong
2014-04-13 22:38 ` Michael Schmitz
2014-04-14 2:14 ` David Miller
2014-04-14 5:05 ` Tuomas Vainikka
2014-04-14 8:51 ` Michael Schmitz
2014-05-25 8:56 ` Geert Uytterhoeven
2014-05-26 1:15 ` Michael Schmitz
2014-04-14 9:01 ` Michael Schmitz
2014-05-04 11:41 ` Tuomas Vainikka
2016-10-28 21:54 ` Finn Thain
2016-10-30 2:33 ` Finn Thain
2016-10-31 8:03 ` Michael Schmitz
2016-10-31 18:54 ` Michael Schmitz
2016-10-31 23:47 ` Finn Thain
2016-11-01 7:09 ` Michael Schmitz
2016-11-01 7:23 ` Finn Thain
2013-08-18 9:14 ` [PATCH 0/2] Experimental Amiga Zorro ESP driver Tuomas Vainikka
2013-08-18 9:42 ` Geert Uytterhoeven
2013-08-18 12:25 ` Tuomas Vainikka
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