Bartlomiej Zolnierkiewicz wrote:
The Marvell bridge chips used on HighPoint SATA cards do not seem to support
the UltraDMA modes 1, 2, and 3 as well as any MWDMA modes, so the driver needs
to account for this in the udma_filter() method. In order to achieve that, do
the following changes:
- install the method for all chips, not only HPT36x/370 and impove the code
formatting by killing the extra tabs while at it;
- add to the end of the 'switch' statement in the method cases for HPT372[AN]
and HPT374 chips upon which the known SATA cards are based;
- use hwif->ultra_mask as a default mask for the ide_dma_filter() method to
behave correctly;
- move the HPT370[A] cases below the HPT36x case for consistency...
Signed-off-by: Sergei Shtylyov <[email protected]>
---
Argh! I've managed to put = instead of &= here and there, so please disregard
the take #2... :-/
Not to mention that there was already take #2 on Aug 19 2007
(the version of the patch which is currently in IDE quilt tree)...
I've just changed my mind about which series it'd beliong too -- propply
need to post [0/n] message before the series....
This version doesn't use explicit UltraDMA masks, so converting them to the
ATA_UDMA* is left for another, global patch. This patch against the current
I have already other patches which are based on the previous version of the
patch and I don't find the idea of re-doing them especially tempting...
Too bad. :-)
I don't find the idea if the open coded masks depnding on HPT3*_ALLOW_ATA*
for a catch all udma_filter() method especially tempting to. :-)
Linus' tree and unfortunately I was able to only compile test it since that
tree gives MODPOST warning and dies early on bootup.
Index: linux-2.6/drivers/ide/pci/hpt366.c
===================================================================
--- linux-2.6.orig/drivers/ide/pci/hpt366.c
+++ linux-2.6/drivers/ide/pci/hpt366.c
@@ -1,5 +1,5 @@
/*
- * linux/drivers/ide/pci/hpt366.c Version 1.11 Aug 11, 2007
+ * linux/drivers/ide/pci/hpt366.c Version 1.12 Aug 25, 2007
*
* Copyright (C) 1999-2003 Andre Hedrick <[email protected]>
* Portions Copyright (C) 2001 Sun Microsystems, Inc.
@@ -114,6 +114,7 @@
* unify HPT36x/37x timing setup code and the speedproc handlers by joining
* the register setting lists into the table indexed by the clock selected
* - set the correct hwif->ultra_mask for each individual chip
+ * - add UltraDMA mode filtering for the HPT37[24] based SATA cards
* Sergei Shtylyov, <[email protected]> or <[email protected]>
*/
@@ -524,36 +525,38 @@ static int check_in_drive_list(ide_drive
(the real) take #2 also updated hpt3xx_udma_filter() comment
I've probably dropped that part in anticipation of adding mdma_filter...
I agree -- future has always come. B-)
static u8 hpt3xx_udma_filter(ide_drive_t *drive)
{
- struct hpt_info *info = pci_get_drvdata(HWIF(drive)->pci_dev);
- u8 mask;
+ ide_hwif_t *hwif = HWIF(drive);
+ struct hpt_info *info = pci_get_drvdata(hwif->pci_dev);
+ u8 mask = hwif->ultra_mask;
switch (info->chip_type) {
- case HPT370A:
- if (!HPT370_ALLOW_ATA100_5 ||
- check_in_drive_list(drive, bad_ata100_5))
- return 0x1f;
- else
- return 0x3f;
- case HPT370:
- if (!HPT370_ALLOW_ATA100_5 ||
- check_in_drive_list(drive, bad_ata100_5))
- mask = 0x1f;
- else
- mask = 0x3f;
- break;
case HPT36x:
- if (!HPT366_ALLOW_ATA66_4 ||
+ if (HPT366_ALLOW_ATA66_4 &&
check_in_drive_list(drive, bad_ata66_4))
- mask = 0x0f;
- else
- mask = 0x1f;
+ mask &= ~0x10;
- if (!HPT366_ALLOW_ATA66_3 ||
+ if (HPT366_ALLOW_ATA66_3 &&
check_in_drive_list(drive, bad_ata66_3))
- mask = 0x07;
+ mask &= ~0x08;
break;
+ case HPT370 :
+ case HPT370A:
+ if (HPT370_ALLOW_ATA100_5 &&
+ check_in_drive_list(drive, bad_ata100_5))
+ mask &= ~0x20;
+
+ if (info->chip_type == HPT370A)
+ return mask;
+ break;
+ case HPT372 :
+ case HPT372A:
+ case HPT372N:
+ case HPT374 :
+ if (ide_dev_is_sata(drive->id))
+ mask &= ~0x0e;
+ /* Fall thru */
default:
- return 0x7f;
+ return mask;
}
I really don't see the advantage of "mask &=" over the previous
Considered the smaller code? ;-)
code ("mask = ATA_UDMA*") which was just more readable IMO.
Like I said, I don't want to be tied by HPT3*_ALLOW_ATA* here and there
(BTW, this approach was in revision #0 which I've never published :-).
I'm staying with (the real) take #2 of this patch for now.
I'll respin RSN... but not take #2, alas. B-)
Bart
MBR, Sergei
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