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path: root/drivers/ide/via82cxxx.c
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Diffstat (limited to 'drivers/ide/via82cxxx.c')
-rw-r--r--drivers/ide/via82cxxx.c95
1 files changed, 59 insertions, 36 deletions
diff --git a/drivers/ide/via82cxxx.c b/drivers/ide/via82cxxx.c
index 2a812d3207e..01464f1e233 100644
--- a/drivers/ide/via82cxxx.c
+++ b/drivers/ide/via82cxxx.c
@@ -6,7 +6,7 @@
* vt8235, vt8237, vt8237a
*
* Copyright (c) 2000-2002 Vojtech Pavlik
- * Copyright (c) 2007 Bartlomiej Zolnierkiewicz
+ * Copyright (c) 2007-2010 Bartlomiej Zolnierkiewicz
*
* Based on the work of:
* Michel Aubry
@@ -14,7 +14,7 @@
* Andre Hedrick
*
* Documentation:
- * Obsolete device documentation publically available from via.com.tw
+ * Obsolete device documentation publicly available from via.com.tw
* Current device documentation available under NDA only
*/
@@ -26,6 +26,7 @@
#include <linux/module.h>
#include <linux/kernel.h>
+#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/ide.h>
@@ -54,6 +55,11 @@
#define VIA_NO_UNMASK 0x08 /* Doesn't work with IRQ unmasking on */
#define VIA_BAD_ID 0x10 /* Has wrong vendor ID (0x1107) */
#define VIA_BAD_AST 0x20 /* Don't touch Address Setup Timing */
+#define VIA_SATA_PATA 0x80 /* SATA/PATA combined configuration */
+
+enum {
+ VIA_IDFLAG_SINGLE = (1 << 1), /* single channel controller */
+};
/*
* VIA SouthBridge chips.
@@ -67,10 +73,13 @@ static struct via_isa_bridge {
u8 udma_mask;
u8 flags;
} via_isa_bridges[] = {
- { "vx800", PCI_DEVICE_ID_VIA_VX800, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
- { "cx700", PCI_DEVICE_ID_VIA_CX700, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
+ { "vx855", PCI_DEVICE_ID_VIA_VX855, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST | VIA_SATA_PATA },
+ { "vx800", PCI_DEVICE_ID_VIA_VX800, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST | VIA_SATA_PATA },
+ { "cx700", PCI_DEVICE_ID_VIA_CX700, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST | VIA_SATA_PATA },
+ { "vt8261", PCI_DEVICE_ID_VIA_8261, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
{ "vt8237s", PCI_DEVICE_ID_VIA_8237S, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
{ "vt6410", PCI_DEVICE_ID_VIA_6410, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
+ { "vt6415", PCI_DEVICE_ID_VIA_6415, 0x00, 0xff, ATA_UDMA6, VIA_BAD_AST },
{ "vt8251", PCI_DEVICE_ID_VIA_8251, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
{ "vt8237", PCI_DEVICE_ID_VIA_8237, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
{ "vt8237a", PCI_DEVICE_ID_VIA_8237A, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
@@ -91,6 +100,7 @@ static struct via_isa_bridge {
{ "vt82c586", PCI_DEVICE_ID_VIA_82C586_0, 0x00, 0x0f, 0x00, VIA_SET_FIFO },
{ "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, 0x00, VIA_SET_FIFO | VIA_NO_UNMASK },
{ "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, 0x00, VIA_SET_FIFO | VIA_NO_UNMASK | VIA_BAD_ID },
+ { "vtxxxx", PCI_DEVICE_ID_VIA_ANON, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
{ NULL }
};
@@ -136,30 +146,45 @@ static void via_set_speed(ide_hwif_t *hwif, u8 dn, struct ide_timing *timing)
case ATA_UDMA4: t = timing->udma ? (0xe8 | (clamp_val(timing->udma, 2, 9) - 2)) : 0x0f; break;
case ATA_UDMA5: t = timing->udma ? (0xe0 | (clamp_val(timing->udma, 2, 9) - 2)) : 0x07; break;
case ATA_UDMA6: t = timing->udma ? (0xe0 | (clamp_val(timing->udma, 2, 9) - 2)) : 0x07; break;
- default: return;
}
- pci_write_config_byte(dev, VIA_UDMA_TIMING + (3 - dn), t);
+ /* Set UDMA unless device is not UDMA capable */
+ if (vdev->via_config->udma_mask) {
+ u8 udma_etc;
+
+ pci_read_config_byte(dev, VIA_UDMA_TIMING + 3 - dn, &udma_etc);
+
+ /* clear transfer mode bit */
+ udma_etc &= ~0x20;
+
+ if (timing->udma) {
+ /* preserve 80-wire cable detection bit */
+ udma_etc &= 0x10;
+ udma_etc |= t;
+ }
+
+ pci_write_config_byte(dev, VIA_UDMA_TIMING + 3 - dn, udma_etc);
+ }
}
/**
* via_set_drive - configure transfer mode
+ * @hwif: port
* @drive: Drive to set up
- * @speed: desired speed
*
* via_set_drive() computes timing values configures the chipset to
* a desired transfer mode. It also can be called by upper layers.
*/
-static void via_set_drive(ide_drive_t *drive, const u8 speed)
+static void via_set_drive(ide_hwif_t *hwif, ide_drive_t *drive)
{
- ide_hwif_t *hwif = drive->hwif;
ide_drive_t *peer = ide_get_pair_dev(drive);
struct pci_dev *dev = to_pci_dev(hwif->dev);
struct ide_host *host = pci_get_drvdata(dev);
struct via82cxxx_dev *vdev = host->host_priv;
struct ide_timing t, p;
unsigned int T, UT;
+ const u8 speed = drive->dma_mode;
T = 1000000000 / via_clock;
@@ -174,31 +199,33 @@ static void via_set_drive(ide_drive_t *drive, const u8 speed)
ide_timing_compute(drive, speed, &t, T, UT);
if (peer) {
- ide_timing_compute(peer, peer->current_speed, &p, T, UT);
+ ide_timing_compute(peer, peer->pio_mode, &p, T, UT);
ide_timing_merge(&p, &t, &t, IDE_TIMING_8BIT);
}
- via_set_speed(HWIF(drive), drive->dn, &t);
+ via_set_speed(hwif, drive->dn, &t);
}
/**
* via_set_pio_mode - set host controller for PIO mode
+ * @hwif: port
* @drive: drive
- * @pio: PIO mode number
*
* A callback from the upper layers for PIO-only tuning.
*/
-static void via_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void via_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
{
- via_set_drive(drive, XFER_PIO_0 + pio);
+ drive->dma_mode = drive->pio_mode;
+ via_set_drive(hwif, drive);
}
static struct via_isa_bridge *via_config_find(struct pci_dev **isa)
{
struct via_isa_bridge *via_config;
- for (via_config = via_isa_bridges; via_config->id; via_config++)
+ for (via_config = via_isa_bridges;
+ via_config->id != PCI_DEVICE_ID_VIA_ANON; via_config++)
if ((*isa = pci_get_device(PCI_VENDOR_ID_VIA +
!!(via_config->flags & VIA_BAD_ID),
via_config->id, NULL))) {
@@ -267,7 +294,7 @@ static void via_cable_detect(struct via82cxxx_dev *vdev, u32 u)
* and initialize its drive independent registers.
*/
-static unsigned int init_chipset_via82cxxx(struct pci_dev *dev)
+static int init_chipset_via82cxxx(struct pci_dev *dev)
{
struct ide_host *host = pci_get_drvdata(dev);
struct via82cxxx_dev *vdev = host->host_priv;
@@ -361,6 +388,9 @@ static u8 via82cxxx_cable_detect(ide_hwif_t *hwif)
if (via_cable_override(pdev))
return ATA_CBL_PATA40_SHORT;
+ if ((vdev->via_config->flags & VIA_SATA_PATA) && hwif->channel == 0)
+ return ATA_CBL_SATA;
+
if ((vdev->via_80w >> hwif->channel) & 1)
return ATA_CBL_PATA80;
else
@@ -373,7 +403,7 @@ static const struct ide_port_ops via_port_ops = {
.cable_detect = via82cxxx_cable_detect,
};
-static const struct ide_port_info via82cxxx_chipset __devinitdata = {
+static const struct ide_port_info via82cxxx_chipset = {
.name = DRV_NAME,
.init_chipset = init_chipset_via82cxxx,
.enablebits = { { 0x40, 0x02, 0x02 }, { 0x40, 0x01, 0x01 } },
@@ -386,7 +416,7 @@ static const struct ide_port_info via82cxxx_chipset __devinitdata = {
.mwdma_mask = ATA_MWDMA2,
};
-static int __devinit via_init_one(struct pci_dev *dev, const struct pci_device_id *id)
+static int via_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
struct pci_dev *isa = NULL;
struct via_isa_bridge *via_config;
@@ -401,11 +431,6 @@ static int __devinit via_init_one(struct pci_dev *dev, const struct pci_device_i
* Find the ISA bridge and check we know what it is.
*/
via_config = via_config_find(&isa);
- if (!via_config->id) {
- printk(KERN_WARNING DRV_NAME " %s: unknown chipset, skipping\n",
- pci_name(dev));
- return -ENODEV;
- }
/*
* Print the boot message.
@@ -432,24 +457,20 @@ static int __devinit via_init_one(struct pci_dev *dev, const struct pci_device_i
if (via_clock < 20000 || via_clock > 50000) {
printk(KERN_WARNING DRV_NAME ": User given PCI clock speed "
"impossible (%d), using 33 MHz instead.\n", via_clock);
- printk(KERN_WARNING DRV_NAME ": Use ide0=ata66 if you want "
- "to assume 80-wire cable.\n");
via_clock = 33333;
}
- if (idx == 0)
- d.host_flags |= IDE_HFLAG_NO_AUTODMA;
- else
+ if (idx == 1)
d.enablebits[1].reg = d.enablebits[0].reg = 0;
+ else
+ d.host_flags |= IDE_HFLAG_NO_AUTODMA;
+
+ if (idx == VIA_IDFLAG_SINGLE)
+ d.host_flags |= IDE_HFLAG_SINGLE;
if ((via_config->flags & VIA_NO_UNMASK) == 0)
d.host_flags |= IDE_HFLAG_UNMASK_IRQS;
-#ifdef CONFIG_PPC_CHRP
- if (machine_is(chrp) && _chrp_type == _CHRP_Pegasos)
- d.host_flags |= IDE_HFLAG_FORCE_LEGACY_IRQS;
-#endif
-
d.udma_mask = via_config->udma_mask;
vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
@@ -468,7 +489,7 @@ static int __devinit via_init_one(struct pci_dev *dev, const struct pci_device_i
return rc;
}
-static void __devexit via_remove(struct pci_dev *dev)
+static void via_remove(struct pci_dev *dev)
{
struct ide_host *host = pci_get_drvdata(dev);
struct via82cxxx_dev *vdev = host->host_priv;
@@ -481,7 +502,9 @@ static const struct pci_device_id via_pci_tbl[] = {
{ PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C576_1), 0 },
{ PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C586_1), 0 },
{ PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_CX700_IDE), 0 },
+ { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_VX855_IDE), VIA_IDFLAG_SINGLE },
{ PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_6410), 1 },
+ { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_6415), 1 },
{ PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_SATA_EIDE), 1 },
{ 0, },
};
@@ -491,7 +514,7 @@ static struct pci_driver via_pci_driver = {
.name = "VIA_IDE",
.id_table = via_pci_tbl,
.probe = via_init_one,
- .remove = __devexit_p(via_remove),
+ .remove = via_remove,
.suspend = ide_pci_suspend,
.resume = ide_pci_resume,
};
@@ -509,6 +532,6 @@ static void __exit via_ide_exit(void)
module_init(via_ide_init);
module_exit(via_ide_exit);
-MODULE_AUTHOR("Vojtech Pavlik, Michel Aubry, Jeff Garzik, Andre Hedrick");
+MODULE_AUTHOR("Vojtech Pavlik, Bartlomiej Zolnierkiewicz, Michel Aubry, Jeff Garzik, Andre Hedrick");
MODULE_DESCRIPTION("PCI driver module for VIA IDE");
MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-13 10:50:49 +0000