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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2010-01-18 07:19:22 +0000
committerDavid S. Miller <davem@davemloft.net>2010-01-19 01:25:01 -0800
commite7593af6e5c24e323217c12d011ad7e43742ca6f (patch)
tree9cb018d472b63ddc58ff86957b25a0d2959777c5 /drivers/ide
parenta337c2272731d538827153b32f547ef7c131a4cb (diff)
downloadop-kernel-dev-e7593af6e5c24e323217c12d011ad7e43742ca6f.zip
op-kernel-dev-e7593af6e5c24e323217c12d011ad7e43742ca6f.tar.gz
serverworks: cleanup svwks_udma_filter()
* remove dead OSB4 UDMA support * remove unreachable code * make isa_dev local to ->init_chipset Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/ide')
-rw-r--r--drivers/ide/serverworks.c40
1 files changed, 11 insertions, 29 deletions
diff --git a/drivers/ide/serverworks.c b/drivers/ide/serverworks.c
index b6554ef..1777c91 100644
--- a/drivers/ide/serverworks.c
+++ b/drivers/ide/serverworks.c
@@ -2,7 +2,7 @@
* Copyright (C) 1998-2000 Michel Aubry
* Copyright (C) 1998-2000 Andrzej Krzysztofowicz
* Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
- * Copyright (C) 2007 Bartlomiej Zolnierkiewicz
+ * Copyright (C) 2007-2010 Bartlomiej Zolnierkiewicz
* Portions copyright (c) 2001 Sun Microsystems
*
*
@@ -52,8 +52,6 @@ static const char *svwks_bad_ata100[] = {
NULL
};
-static struct pci_dev *isa_dev;
-
static int check_in_drive_lists (ide_drive_t *drive, const char **list)
{
char *m = (char *)&drive->id[ATA_ID_PROD];
@@ -67,26 +65,14 @@ static int check_in_drive_lists (ide_drive_t *drive, const char **list)
static u8 svwks_udma_filter(ide_drive_t *drive)
{
struct pci_dev *dev = to_pci_dev(drive->hwif->dev);
- u8 mask = 0;
- if (dev->device == PCI_DEVICE_ID_SERVERWORKS_HT1000IDE)
+ if (dev->device == PCI_DEVICE_ID_SERVERWORKS_HT1000IDE) {
return 0x1f;
- if (dev->device == PCI_DEVICE_ID_SERVERWORKS_OSB4IDE) {
- u32 reg = 0;
- if (isa_dev)
- pci_read_config_dword(isa_dev, 0x64, &reg);
-
- /*
- * Don't enable UDMA on disk devices for the moment
- */
- if(drive->media == ide_disk)
- return 0;
- /* Check the OSB4 DMA33 enable bit */
- return ((reg & 0x00004000) == 0x00004000) ? 0x07 : 0;
} else if (dev->revision < SVWKS_CSB5_REVISION_NEW) {
return 0x07;
- } else if (dev->revision >= SVWKS_CSB5_REVISION_NEW) {
- u8 btr = 0, mode;
+ } else {
+ u8 btr = 0, mode, mask;
+
pci_read_config_byte(dev, 0x5A, &btr);
mode = btr & 0x3;
@@ -101,13 +87,9 @@ static u8 svwks_udma_filter(ide_drive_t *drive)
case 1: mask = 0x07; break;
default: mask = 0x00; break;
}
- }
- if (((dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE) ||
- (dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2)) &&
- (!(PCI_FUNC(dev->devfn) & 1)))
- mask = 0x1f;
- return mask;
+ return mask;
+ }
}
static u8 svwks_csb_check (struct pci_dev *dev)
@@ -185,8 +167,9 @@ static int init_chipset_svwks(struct pci_dev *dev)
/* OSB4 : South Bridge and IDE */
if (dev->device == PCI_DEVICE_ID_SERVERWORKS_OSB4IDE) {
- isa_dev = pci_get_device(PCI_VENDOR_ID_SERVERWORKS,
- PCI_DEVICE_ID_SERVERWORKS_OSB4, NULL);
+ struct pci_dev *isa_dev =
+ pci_get_device(PCI_VENDOR_ID_SERVERWORKS,
+ PCI_DEVICE_ID_SERVERWORKS_OSB4, NULL);
if (isa_dev) {
pci_read_config_dword(isa_dev, 0x64, &reg);
reg &= ~0x00002000; /* disable 600ns interrupt mask */
@@ -343,7 +326,6 @@ static u8 svwks_cable_detect(ide_hwif_t *hwif)
static const struct ide_port_ops osb4_port_ops = {
.set_pio_mode = svwks_set_pio_mode,
.set_dma_mode = svwks_set_dma_mode,
- .udma_filter = svwks_udma_filter,
};
static const struct ide_port_ops svwks_port_ops = {
@@ -460,6 +442,6 @@ static void __exit svwks_ide_exit(void)
module_init(svwks_ide_init);
module_exit(svwks_ide_exit);
-MODULE_AUTHOR("Michael Aubry. Andrzej Krzysztofowicz, Andre Hedrick");
+MODULE_AUTHOR("Michael Aubry. Andrzej Krzysztofowicz, Andre Hedrick, Bartlomiej Zolnierkiewicz");
MODULE_DESCRIPTION("PCI driver module for Serverworks OSB4/CSB5/CSB6 IDE");
MODULE_LICENSE("GPL");
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