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linux/drivers/ide/aec62xx.c
Bartlomiej Zolnierkiewicz 2ed0ef543a ide: fix ->init_chipset method to return 'int' value 
* Return 0 instead of dev->irq in ->init_chipset implementations.

* Fix ->init_chipset method to return 'int' value instead of
  'unsigned int' one.

This fixes ->init_chipset handling for host drivers (cs5530, hpt366
and pdc202xx_new) for which it is possible for this method to fail.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:53 +01:00

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/*
* Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org>
* Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com>
*
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/ide.h>
#include <linux/init.h>
#include <asm/io.h>
#define DRV_NAME "aec62xx"
struct chipset_bus_clock_list_entry {
u8 xfer_speed;
u8 chipset_settings;
u8 ultra_settings;
};
static const struct chipset_bus_clock_list_entry aec6xxx_33_base [] = {
{ XFER_UDMA_6, 0x31, 0x07 },
{ XFER_UDMA_5, 0x31, 0x06 },
{ XFER_UDMA_4, 0x31, 0x05 },
{ XFER_UDMA_3, 0x31, 0x04 },
{ XFER_UDMA_2, 0x31, 0x03 },
{ XFER_UDMA_1, 0x31, 0x02 },
{ XFER_UDMA_0, 0x31, 0x01 },
{ XFER_MW_DMA_2, 0x31, 0x00 },
{ XFER_MW_DMA_1, 0x31, 0x00 },
{ XFER_MW_DMA_0, 0x0a, 0x00 },
{ XFER_PIO_4, 0x31, 0x00 },
{ XFER_PIO_3, 0x33, 0x00 },
{ XFER_PIO_2, 0x08, 0x00 },
{ XFER_PIO_1, 0x0a, 0x00 },
{ XFER_PIO_0, 0x00, 0x00 },
{ 0, 0x00, 0x00 }
};
static const struct chipset_bus_clock_list_entry aec6xxx_34_base [] = {
{ XFER_UDMA_6, 0x41, 0x06 },
{ XFER_UDMA_5, 0x41, 0x05 },
{ XFER_UDMA_4, 0x41, 0x04 },
{ XFER_UDMA_3, 0x41, 0x03 },
{ XFER_UDMA_2, 0x41, 0x02 },
{ XFER_UDMA_1, 0x41, 0x01 },
{ XFER_UDMA_0, 0x41, 0x01 },
{ XFER_MW_DMA_2, 0x41, 0x00 },
{ XFER_MW_DMA_1, 0x42, 0x00 },
{ XFER_MW_DMA_0, 0x7a, 0x00 },
{ XFER_PIO_4, 0x41, 0x00 },
{ XFER_PIO_3, 0x43, 0x00 },
{ XFER_PIO_2, 0x78, 0x00 },
{ XFER_PIO_1, 0x7a, 0x00 },
{ XFER_PIO_0, 0x70, 0x00 },
{ 0, 0x00, 0x00 }
};
/*
* TO DO: active tuning and correction of cards without a bios.
*/
static u8 pci_bus_clock_list (u8 speed, struct chipset_bus_clock_list_entry * chipset_table)
{
for ( ; chipset_table->xfer_speed ; chipset_table++)
if (chipset_table->xfer_speed == speed) {
return chipset_table->chipset_settings;
}
return chipset_table->chipset_settings;
}
static u8 pci_bus_clock_list_ultra (u8 speed, struct chipset_bus_clock_list_entry * chipset_table)
{
for ( ; chipset_table->xfer_speed ; chipset_table++)
if (chipset_table->xfer_speed == speed) {
return chipset_table->ultra_settings;
}
return chipset_table->ultra_settings;
}
static void aec6210_set_mode(ide_drive_t *drive, const u8 speed)
{
ide_hwif_t *hwif = drive->hwif;
struct pci_dev *dev = to_pci_dev(hwif->dev);
struct ide_host *host = pci_get_drvdata(dev);
struct chipset_bus_clock_list_entry *bus_clock = host->host_priv;
u16 d_conf = 0;
u8 ultra = 0, ultra_conf = 0;
u8 tmp0 = 0, tmp1 = 0, tmp2 = 0;
unsigned long flags;
local_irq_save(flags);
/* 0x40|(2*drive->dn): Active, 0x41|(2*drive->dn): Recovery */
pci_read_config_word(dev, 0x40|(2*drive->dn), &d_conf);
tmp0 = pci_bus_clock_list(speed, bus_clock);
d_conf = ((tmp0 & 0xf0) << 4) | (tmp0 & 0xf);
pci_write_config_word(dev, 0x40|(2*drive->dn), d_conf);
tmp1 = 0x00;
tmp2 = 0x00;
pci_read_config_byte(dev, 0x54, &ultra);
tmp1 = ((0x00 << (2*drive->dn)) | (ultra & ~(3 << (2*drive->dn))));
ultra_conf = pci_bus_clock_list_ultra(speed, bus_clock);
tmp2 = ((ultra_conf << (2*drive->dn)) | (tmp1 & ~(3 << (2*drive->dn))));
pci_write_config_byte(dev, 0x54, tmp2);
local_irq_restore(flags);
}
static void aec6260_set_mode(ide_drive_t *drive, const u8 speed)
{
ide_hwif_t *hwif = drive->hwif;
struct pci_dev *dev = to_pci_dev(hwif->dev);
struct ide_host *host = pci_get_drvdata(dev);
struct chipset_bus_clock_list_entry *bus_clock = host->host_priv;
u8 unit = drive->dn & 1;
u8 tmp1 = 0, tmp2 = 0;
u8 ultra = 0, drive_conf = 0, ultra_conf = 0;
unsigned long flags;
local_irq_save(flags);
/* high 4-bits: Active, low 4-bits: Recovery */
pci_read_config_byte(dev, 0x40|drive->dn, &drive_conf);
drive_conf = pci_bus_clock_list(speed, bus_clock);
pci_write_config_byte(dev, 0x40|drive->dn, drive_conf);
pci_read_config_byte(dev, (0x44|hwif->channel), &ultra);
tmp1 = ((0x00 << (4*unit)) | (ultra & ~(7 << (4*unit))));
ultra_conf = pci_bus_clock_list_ultra(speed, bus_clock);
tmp2 = ((ultra_conf << (4*unit)) | (tmp1 & ~(7 << (4*unit))));
pci_write_config_byte(dev, (0x44|hwif->channel), tmp2);
local_irq_restore(flags);
}
static void aec_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
drive->hwif->port_ops->set_dma_mode(drive, pio + XFER_PIO_0);
}
static int init_chipset_aec62xx(struct pci_dev *dev)
{
/* These are necessary to get AEC6280 Macintosh cards to work */
if ((dev->device == PCI_DEVICE_ID_ARTOP_ATP865) ||
(dev->device == PCI_DEVICE_ID_ARTOP_ATP865R)) {
u8 reg49h = 0, reg4ah = 0;
/* Clear reset and test bits. */
pci_read_config_byte(dev, 0x49, &reg49h);
pci_write_config_byte(dev, 0x49, reg49h & ~0x30);
/* Enable chip interrupt output. */
pci_read_config_byte(dev, 0x4a, &reg4ah);
pci_write_config_byte(dev, 0x4a, reg4ah & ~0x01);
/* Enable burst mode. */
pci_read_config_byte(dev, 0x4a, &reg4ah);
pci_write_config_byte(dev, 0x4a, reg4ah | 0x80);
}
return 0;
}
static u8 atp86x_cable_detect(ide_hwif_t *hwif)
{
struct pci_dev *dev = to_pci_dev(hwif->dev);
u8 ata66 = 0, mask = hwif->channel ? 0x02 : 0x01;
pci_read_config_byte(dev, 0x49, &ata66);
return (ata66 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
}
static const struct ide_port_ops atp850_port_ops = {
.set_pio_mode = aec_set_pio_mode,
.set_dma_mode = aec6210_set_mode,
};
static const struct ide_port_ops atp86x_port_ops = {
.set_pio_mode = aec_set_pio_mode,
.set_dma_mode = aec6260_set_mode,
.cable_detect = atp86x_cable_detect,
};
static const struct ide_port_info aec62xx_chipsets[] __devinitdata = {
{ /* 0: AEC6210 */
.name = DRV_NAME,
.init_chipset = init_chipset_aec62xx,
.enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
.port_ops = &atp850_port_ops,
.host_flags = IDE_HFLAG_SERIALIZE |
IDE_HFLAG_NO_ATAPI_DMA |
IDE_HFLAG_NO_DSC |
IDE_HFLAG_OFF_BOARD,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA2,
},
{ /* 1: AEC6260 */
.name = DRV_NAME,
.init_chipset = init_chipset_aec62xx,
.port_ops = &atp86x_port_ops,
.host_flags = IDE_HFLAG_NO_ATAPI_DMA | IDE_HFLAG_NO_AUTODMA |
IDE_HFLAG_OFF_BOARD,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA4,
},
{ /* 2: AEC6260R */
.name = DRV_NAME,
.init_chipset = init_chipset_aec62xx,
.enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
.port_ops = &atp86x_port_ops,
.host_flags = IDE_HFLAG_NO_ATAPI_DMA |
IDE_HFLAG_NON_BOOTABLE,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA4,
},
{ /* 3: AEC6280 */
.name = DRV_NAME,
.init_chipset = init_chipset_aec62xx,
.port_ops = &atp86x_port_ops,
.host_flags = IDE_HFLAG_NO_ATAPI_DMA |
IDE_HFLAG_OFF_BOARD,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA5,
},
{ /* 4: AEC6280R */
.name = DRV_NAME,
.init_chipset = init_chipset_aec62xx,
.enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
.port_ops = &atp86x_port_ops,
.host_flags = IDE_HFLAG_NO_ATAPI_DMA |
IDE_HFLAG_OFF_BOARD,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA5,
}
};
/**
* aec62xx_init_one - called when a AEC is found
* @dev: the aec62xx device
* @id: the matching pci id
*
* Called when the PCI registration layer (or the IDE initialization)
* finds a device matching our IDE device tables.
*
* NOTE: since we're going to modify the 'name' field for AEC-6[26]80[R]
* chips, pass a local copy of 'struct ide_port_info' down the call chain.
*/
static int __devinit aec62xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
const struct chipset_bus_clock_list_entry *bus_clock;
struct ide_port_info d;
u8 idx = id->driver_data;
int bus_speed = ide_pci_clk ? ide_pci_clk : 33;
int err;
if (bus_speed <= 33)
bus_clock = aec6xxx_33_base;
else
bus_clock = aec6xxx_34_base;
err = pci_enable_device(dev);
if (err)
return err;
d = aec62xx_chipsets[idx];
if (idx == 3 || idx == 4) {
unsigned long dma_base = pci_resource_start(dev, 4);
if (inb(dma_base + 2) & 0x10) {
printk(KERN_INFO DRV_NAME " %s: AEC6880%s card detected"
"\n", pci_name(dev), (idx == 4) ? "R" : "");
d.udma_mask = ATA_UDMA6;
}
}
err = ide_pci_init_one(dev, &d, (void *)bus_clock);
if (err)
pci_disable_device(dev);
return err;
}
static void __devexit aec62xx_remove(struct pci_dev *dev)
{
ide_pci_remove(dev);
pci_disable_device(dev);
}
static const struct pci_device_id aec62xx_pci_tbl[] = {
{ PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP850UF), 0 },
{ PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP860), 1 },
{ PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP860R), 2 },
{ PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP865), 3 },
{ PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP865R), 4 },
{ 0, },
};
MODULE_DEVICE_TABLE(pci, aec62xx_pci_tbl);
static struct pci_driver aec62xx_pci_driver = {
.name = "AEC62xx_IDE",
.id_table = aec62xx_pci_tbl,
.probe = aec62xx_init_one,
.remove = __devexit_p(aec62xx_remove),
.suspend = ide_pci_suspend,
.resume = ide_pci_resume,
};
static int __init aec62xx_ide_init(void)
{
return ide_pci_register_driver(&aec62xx_pci_driver);
}
static void __exit aec62xx_ide_exit(void)
{
pci_unregister_driver(&aec62xx_pci_driver);
}
module_init(aec62xx_ide_init);
module_exit(aec62xx_ide_exit);
MODULE_AUTHOR("Andre Hedrick");
MODULE_DESCRIPTION("PCI driver module for ARTOP AEC62xx IDE");
MODULE_LICENSE("GPL");
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