/*
* Created 20 Oct 2004 by Mark Lord
*
* Basic support for Delkin/ASKA/Workbit Cardbus CompactFlash adapter
*
* Modeled after the 16-bit PCMCIA driver: ide-cs.c
*
* This is slightly peculiar, in that it is a PCI driver,
* but is NOT an IDE PCI driver -- the IDE layer does not directly
* support hot insertion/removal of PCI interfaces, so this driver
* is unable to use the IDE PCI interfaces. Instead, it uses the
* same interfaces as the ide-cs (PCMCIA) driver uses.
* On the plus side, the driver is also smaller/simpler this way.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/ide.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <asm/io.h>
/*
* No chip documentation has yet been found,
* so these configuration values were pulled from
* a running Win98 system using "debug".
* This gives around 3MByte/second read performance,
* which is about 2/3 of what the chip is capable of.
*
* There is also a 4KByte mmio region on the card,
* but its purpose has yet to be reverse-engineered.
*/
static const u8 setup[] = {
0x00, 0x05, 0xbe, 0x01, 0x20, 0x8f, 0x00, 0x00,
0xa4, 0x1f, 0xb3, 0x1b, 0x00, 0x00, 0x00, 0x80,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0xa4, 0x83, 0x02, 0x13,
};
static const struct ide_port_ops delkin_cb_port_ops = {
.quirkproc = ide_undecoded_slave,
};
static int delkin_cb_init_chipset(struct pci_dev *dev)
{
unsigned long base = pci_resource_start(dev, 0);
int i;
outb(0x02, base + 0x1e); /* set nIEN to block interrupts */
inb(base + 0x17); /* read status to clear interrupts */
for (i = 0; i < sizeof(setup); ++i) {
if (setup[i])
outb(setup[i], base + i);
}
return 0;
}
static const struct ide_port_info delkin_cb_port_info = {
.port_ops = &delkin_cb_port_ops,
.host_flags = IDE_HFLAG_IO_32BIT | IDE_HFLAG_UNMASK_IRQS |
IDE_HFLAG_NO_DMA,
.irq_flags = IRQF_SHARED,
.init_chipset = delkin_cb_init_chipset,
};
static int __devinit
delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
{
struct ide_host *host;
unsigned long base;
int rc;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
rc = pci_enable_device(dev);
if (rc) {
printk(KERN_ERR "delkin_cb: pci_enable_device failed (%d)\n", rc);
return rc;
}
rc = pci_request_regions(dev, "delkin_cb");
if (rc) {
printk(KERN_ERR "delkin_cb: pci_request_regions failed (%d)\n", rc);
pci_disable_device(dev);
return rc;
}
base = pci_resource_start(dev, 0);
delkin_cb_init_chipset(dev);
memset(&hw, 0, sizeof(hw));
ide_std_init_ports(&hw, base + 0x10, base + 0x1e);
hw.irq = dev->irq;
hw.dev = &dev->dev;
hw.chipset = ide_pci; /* this enables IRQ sharing */
rc = ide_host_add(&delkin_cb_port_info, hws, &host);
if (rc)
goto out_disable;
pci_set_drvdata(dev, host);
return 0;
out_disable:
pci_release_regions(dev);
pci_disable_device(dev);
return rc;
}
static void
delkin_cb_remove (struct pci_dev *dev)
{
struct ide_host *host = pci_get_drvdata(dev);
ide_host_remove(host);
pci_release_regions(dev);
pci_disable_device(dev);
}
#ifdef CONFIG_PM
static int delkin_cb_suspend(struct pci_dev *dev, pm_message_t state)
{
pci_save_state(dev);
pci_disable_device(dev);
pci_set_power_state(dev, pci_choose_state(dev, state));
return 0;
}
static int delkin_cb_resume(struct pci_dev *dev)
{
struct ide_host *host = pci_get_drvdata(dev);
int rc;
pci_set_power_state(dev, PCI_D0);
rc = pci_enable_device(dev);
if (rc)
return rc;
pci_restore_state(dev);
pci_set_master(dev);
if (host->init_chipset)
host->init_chipset(dev);
return 0;
}
#else
#define delkin_cb_suspend NULL
#define delkin_cb_resume NULL
#endif
static struct pci_device_id delkin_cb_pci_tbl[] __devinitdata = {
{ 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{ 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{ 0, },
};
MODULE_DEVICE_TABLE(pci, delkin_cb_pci_tbl);
static struct pci_driver delkin_cb_pci_driver = {
.name = "Delkin-ASKA-Workbit Cardbus IDE",
.id_table = delkin_cb_pci_tbl,
.probe = delkin_cb_probe,
.remove = delkin_cb_remove,
.suspend = delkin_cb_suspend,
.resume = delkin_cb_resume,
};
static int __init delkin_cb_init(void)
{
return pci_register_driver(&delkin_cb_pci_driver);
}
static void __exit delkin_cb_exit(void)
{
pci_unregister_driver(&delkin_cb_pci_driver);
}
module_init(delkin_cb_init);
module_exit(delkin_cb_exit);
MODULE_AUTHOR("Mark Lord");
MODULE_DESCRIPTION("Basic support for Delkin/ASKA/Workbit Cardbus IDE");
MODULE_LICENSE("GPL");
