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pata_hpt{37x|3x2n}: SATA mode filtering

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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;  these cards are
based on HPT372/372A/372N/374 chips (judging from the vendor drivers), so
the Linux drivers need to have a mode_filter() method for these chips...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Sergei Shtylyov
2010-12-25 22:44:01 +03:00
committed by Jeff Garzik
parent b27dcfb067
commit 8e834c2e6d
2 changed files with 93 additions and 22 deletions
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54
drivers/ata/pata_hpt37x.c
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@@ -8,7 +8,7 @@
* Copyright (C) 1999-2003 Andre Hedrick <andre@linux-ide.org>
* Portions Copyright (C) 2001 Sun Microsystems, Inc.
* Portions Copyright (C) 2003 Red Hat Inc
* Portions Copyright (C) 2005-2009 MontaVista Software, Inc.
* Portions Copyright (C) 2005-2010 MontaVista Software, Inc.
*
* TODO
* Look into engine reset on timeout errors. Should not be required.
@@ -24,7 +24,7 @@
#include <linux/libata.h>
#define DRV_NAME "pata_hpt37x"
#define DRV_VERSION "0.6.15"
#define DRV_VERSION "0.6.16"
struct hpt_clock {
u8 xfer_speed;
@@ -301,6 +301,22 @@ static unsigned long hpt370a_filter(struct ata_device *adev, unsigned long mask)
return mask;
}
/**
* hpt372_filter - mode selection filter
* @adev: ATA device
* @mask: mode mask
*
* The Marvell bridge chips used on the HighPoint SATA cards do not seem
* to support the UltraDMA modes 1, 2, and 3 as well as any MWDMA modes...
*/
static unsigned long hpt372_filter(struct ata_device *adev, unsigned long mask)
{
if (ata_id_is_sata(adev->id))
mask &= ~((0xE << ATA_SHIFT_UDMA) | ATA_MASK_MWDMA);
return mask;
}
/**
* hpt37x_cable_detect - Detect the cable type
* @ap: ATA port to detect on
@@ -586,11 +602,11 @@ static struct ata_port_operations hpt370a_port_ops = {
};
/*
* Configuration for HPT372, HPT371, HPT302. Slightly different PIO
* and DMA mode setting functionality.
* Configuration for HPT371 and HPT302. Slightly different PIO and DMA
* mode setting functionality.
*/
static struct ata_port_operations hpt372_port_ops = {
static struct ata_port_operations hpt302_port_ops = {
.inherits = &ata_bmdma_port_ops,
.bmdma_stop = hpt37x_bmdma_stop,
@@ -602,7 +618,17 @@ static struct ata_port_operations hpt372_port_ops = {
};
/*
* Configuration for HPT374. Mode setting works like 372 and friends
* Configuration for HPT372. Mode setting works like 371 and 302
* but we have a mode filter.
*/
static struct ata_port_operations hpt372_port_ops = {
.inherits = &hpt302_port_ops,
.mode_filter = hpt372_filter,
};
/*
* Configuration for HPT374. Mode setting and filtering works like 372
* but we have a different cable detection procedure for function 1.
*/
@@ -753,7 +779,7 @@ static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
.udma_mask = ATA_UDMA5,
.port_ops = &hpt370a_port_ops
};
/* HPT371, 372 and friends - UDMA133 */
/* HPT372 - UDMA133 */
static const struct ata_port_info info_hpt372 = {
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = ATA_PIO4,
@@ -761,6 +787,14 @@ static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
.udma_mask = ATA_UDMA6,
.port_ops = &hpt372_port_ops
};
/* HPT371, 302 - UDMA133 */
static const struct ata_port_info info_hpt302 = {
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA6,
.port_ops = &hpt302_port_ops
};
/* HPT374 - UDMA100, function 1 uses different prereset method */
static const struct ata_port_info info_hpt374_fn0 = {
.flags = ATA_FLAG_SLAVE_POSS,
@@ -828,7 +862,7 @@ static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
} else {
switch(dev->device) {
case PCI_DEVICE_ID_TTI_HPT372:
/* 372N if rev >= 2*/
/* 372N if rev >= 2 */
if (rev >= 2)
return -ENODEV;
ppi[0] = &info_hpt372;
@@ -838,14 +872,14 @@ static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
/* 302N if rev > 1 */
if (rev > 1)
return -ENODEV;
ppi[0] = &info_hpt372;
ppi[0] = &info_hpt302;
/* Check this */
chip_table = &hpt302;
break;
case PCI_DEVICE_ID_TTI_HPT371:
if (rev > 1)
return -ENODEV;
ppi[0] = &info_hpt372;
ppi[0] = &info_hpt302;
chip_table = &hpt371;
/* Single channel device, master is not present
but the BIOS (or us for non x86) must mark it