From: Brett Russ <russb@emc.com>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2.6.13] Fix pio_mask values
Date: Tue, 30 Aug 2005 15:03:09 -0400 (EDT) [thread overview]
Message-ID: <20050830190309.E14FE20F4C@lns1058.lss.emc.com> (raw)
ata_get_mode_mask() has PIO modes 3 and 4 as bits 3 and 4 in the pio_mask
since the value read from the drive is shifted left by 3 bits and OR'd with
0x7 (which corresponds to PIO 2-0). Thus, the drivers below need adjustments
to comply with the way pio_mask is used. I left the masks in a state which
agrees with the existing comments; perhaps they all should get 0x1f to
indicate driver support for PIO4-0 but that can be done later.
Signed-off-by: Brett Russ <russb@emc.com>
Index: linux-2.6.13/drivers/scsi/ahci.c
===================================================================
--- linux-2.6.13.orig/drivers/scsi/ahci.c
+++ linux-2.6.13/drivers/scsi/ahci.c
@@ -244,7 +244,7 @@ static struct ata_port_info ahci_port_in
.host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
ATA_FLAG_SATA_RESET | ATA_FLAG_MMIO |
ATA_FLAG_PIO_DMA,
- .pio_mask = 0x03, /* pio3-4 */
+ .pio_mask = 0x18, /* pio3-4 */
.udma_mask = 0x7f, /* udma0-6 ; FIXME */
.port_ops = &ahci_ops,
},
Index: linux-2.6.13/drivers/scsi/sata_uli.c
===================================================================
--- linux-2.6.13.orig/drivers/scsi/sata_uli.c
+++ linux-2.6.13/drivers/scsi/sata_uli.c
@@ -120,7 +120,7 @@ static struct ata_port_info uli_port_inf
.sht = &uli_sht,
.host_flags = ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
ATA_FLAG_NO_LEGACY,
- .pio_mask = 0x03, //support pio mode 4 (FIXME)
+ .pio_mask = 0x10, //support pio mode 4 (FIXME)
.udma_mask = 0x7f, //support udma mode 6
.port_ops = &uli_ops,
};
next reply other threads:[~2005-08-30 19:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-30 19:03 Brett Russ [this message]
2005-09-02 1:53 ` [PATCH 2.6.13] libata: fix pio_mask values (take 2) Brett Russ
2005-09-07 5:55 ` Jeff Garzik
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