From: Pat LaVarre <p.lavarre@ieee.org>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: linux-ide@vger.kernel.org
Subject: Re: [PATCH] libata DMADIR support
Date: 18 May 2004 16:40:24 -0600 [thread overview]
Message-ID: <1084920024.3191.8.camel@patibmrh9> (raw)
In-Reply-To: <40A93E85.4010904@pobox.com>
> Feel free to play around. :)
>
> Silicon Image is sending me a couple bridges, we'll see how they
> behave.
Heads up, I have a second sample of hardware now:
kernel: ata_exec_command_pio: ata2: cmd 0xA1
kernel: ata2: dev 0 cfg 49:0e00 82:4218 83:4000 84:4000 85:4218 86:0000 87:4000 88:0000
Its ata_piix.ko op x12 "INQUIRY" doesn't yet work at all, perhaps by way
of more accurately simulating what we may see in mass distribution.
You'll remember, the first hardware sample I acquired was a
massively-distributed PATA ATAPI DMA drive combined with an Si 3611CT80
r1.4 SATA/ PATA bridge.
My second sample is that same bridge, but now with a different drive
behind it, specifically a drive whose firmware purportedly implements
the "d1532v1r4b ATA-ATAPI-7.pdf" proposal to substitute:
PATA ATAPI:
id[49] = id[ 7 * 8 - 8 + 1] = x0F00 // DMA
id[62] = id[ 8 * 8 - 8 + 6] = x0000 // SWDMA not
id[63] = id[ 8 * 8 - 8 + 7] = x0007 // MWDMA 2 1 0
id[88] = id[12 * 8 - 8 + 0] = xXX3F // UDMA 5 4 2 1 0
SATA ATAPI per 2004-04-21 d1532v1r4b:
id[49] = id[ 7 * 8 - 8 + 1] = x0E00
id[62] = id[ 8 * 8 - 8 + 6] = x87FF // ATA-7: DMADIR, ATA-2: SWDMA 2 1 0
id[63] = id[ 8 * 8 - 8 + 7] = x0000
id[88] = id[12 * 8 - 8 + 0] = xXX00
I'll go digging now.
I imagine I'll find I can most concisely make this work by copying into
words 49 63 88 the bits of word 62.
Pat LaVarre
next prev parent reply other threads:[~2004-05-18 22:40 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-16 14:19 [PATCH] libata DMADIR support Pat LaVarre
2004-05-16 23:16 ` Jeff Garzik
2004-05-17 18:48 ` Pat LaVarre
2004-05-17 19:08 ` Jeff Garzik
2004-05-17 21:06 ` Pat LaVarre
2004-05-17 21:40 ` Jeff Garzik
2004-05-17 21:20 ` Pat LaVarre
2004-05-17 21:32 ` Jeff Garzik
2004-05-17 21:34 ` Jeff Garzik
2004-05-17 22:05 ` Pat LaVarre
2004-05-17 22:36 ` Jeff Garzik
2004-05-17 23:04 ` Pat LaVarre
2004-05-18 22:40 ` Pat LaVarre [this message]
2004-05-18 23:07 ` Pat LaVarre
2004-05-18 23:50 ` Jeff Garzik
2004-05-19 22:47 ` Pat LaVarre
2004-05-18 23:48 ` [PATCH] atapi request sense work Jeff Garzik
2004-05-19 20:35 ` Pat LaVarre
2004-05-19 22:19 ` Jeff Garzik
2004-05-19 22:24 ` Pat LaVarre
2004-05-19 22:27 ` Pat LaVarre
2004-05-19 22:54 ` Pat LaVarre
2004-05-21 1:58 ` Pat LaVarre
[not found] ` <6 E36A 11B-AACB-11D8-8B8A-003065635034@ieee.org>
2004-05-21 2:06 ` Pat LaVarre
2004-05-21 3:05 ` Pat LaVarre
2004-05-21 4:04 ` Jeff Garzik
[not found] ` <1 085153750.6103.33.camel@patibmrh9>
2004-05-21 15:35 ` Pat LaVarre
2004-05-21 15:46 ` Bartlomiej Zolnierkiewicz
2004-05-21 17:59 ` Pat LaVarre
2004-05-21 20:07 ` Pat LaVarre
2004-05-21 21:51 ` Jeff Garzik
2004-05-21 23:12 ` Pat LaVarre
2004-05-21 23:24 ` Pat LaVarre
2004-05-21 23:55 ` Jeff Garzik
2004-05-21 23:57 ` Pat LaVarre
2004-05-21 23:39 ` Pat LaVarre
2004-05-21 23:45 ` Jeff Garzik
2004-05-22 0:06 ` Pat LaVarre
2004-05-22 0:12 ` Pat LaVarre
2004-05-22 0:33 ` Pat LaVarre
2004-05-22 1:11 ` Pat LaVarre
2004-05-26 21:49 ` Pat LaVarre
2004-05-27 23:12 ` Pat LaVarre
2004-05-27 23:32 ` Jeff Garzik
2004-05-27 23:38 ` Pat LaVarre
2004-05-27 23:41 ` Jeff Garzik
2004-05-28 0:13 ` Pat LaVarre
2004-05-28 1:28 ` Pat LaVarre
2004-05-24 15:27 ` Pat LaVarre
2004-05-21 21:59 ` Pat LaVarre
2004-05-21 18:23 ` Danny Cox
2004-05-21 18:39 ` Bartlomiej Zolnierkiewicz
2004-05-21 18:55 ` [PATCH] kmalloc old_hwif Danny Cox
2004-05-21 19:00 ` [PATCH] atapi request sense work Danny Cox
2004-05-21 19:08 ` Bartlomiej Zolnierkiewicz
-- strict thread matches above, loose matches on Subject: below --
2004-05-15 21:46 [PATCH] libata DMADIR support Jeff Garzik
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