161 lines
3.9 KiB
C
161 lines
3.9 KiB
C
/*
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* Created 20 Oct 2004 by Mark Lord
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*
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* Basic support for Delkin/ASKA/Workbit Cardbus CompactFlash adapter
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*
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* Modeled after the 16-bit PCMCIA driver: ide-cs.c
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*
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* This is slightly peculiar, in that it is a PCI driver,
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* but is NOT an IDE PCI driver -- the IDE layer does not directly
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* support hot insertion/removal of PCI interfaces, so this driver
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* is unable to use the IDE PCI interfaces. Instead, it uses the
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* same interfaces as the ide-cs (PCMCIA) driver uses.
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* On the plus side, the driver is also smaller/simpler this way.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive for
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* more details.
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*/
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#include <linux/types.h>
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#include <linux/module.h>
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#include <linux/hdreg.h>
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#include <linux/ide.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <asm/io.h>
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/*
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* No chip documentation has yet been found,
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* so these configuration values were pulled from
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* a running Win98 system using "debug".
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* This gives around 3MByte/second read performance,
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* which is about 2/3 of what the chip is capable of.
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*
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* There is also a 4KByte mmio region on the card,
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* but its purpose has yet to be reverse-engineered.
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*/
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static const u8 setup[] = {
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0x00, 0x05, 0xbe, 0x01, 0x20, 0x8f, 0x00, 0x00,
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0xa4, 0x1f, 0xb3, 0x1b, 0x00, 0x00, 0x00, 0x80,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0xa4, 0x83, 0x02, 0x13,
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};
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static int __devinit
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delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
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{
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unsigned long base;
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hw_regs_t hw;
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ide_hwif_t *hwif = NULL;
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ide_drive_t *drive;
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int i, rc;
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u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
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rc = pci_enable_device(dev);
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if (rc) {
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printk(KERN_ERR "delkin_cb: pci_enable_device failed (%d)\n", rc);
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return rc;
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}
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rc = pci_request_regions(dev, "delkin_cb");
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if (rc) {
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printk(KERN_ERR "delkin_cb: pci_request_regions failed (%d)\n", rc);
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pci_disable_device(dev);
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return rc;
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}
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base = pci_resource_start(dev, 0);
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outb(0x02, base + 0x1e); /* set nIEN to block interrupts */
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inb(base + 0x17); /* read status to clear interrupts */
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for (i = 0; i < sizeof(setup); ++i) {
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if (setup[i])
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outb(setup[i], base + i);
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}
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pci_release_regions(dev); /* IDE layer handles regions itself */
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memset(&hw, 0, sizeof(hw));
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ide_std_init_ports(&hw, base + 0x10, base + 0x1e);
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hw.irq = dev->irq;
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hw.chipset = ide_pci; /* this enables IRQ sharing */
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hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
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if (hwif == NULL)
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goto out_disable;
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i = hwif->index;
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if (hwif->present)
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ide_unregister(i);
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else if (!hwif->hold)
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ide_init_port_data(hwif, i);
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ide_init_port_hw(hwif, &hw);
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hwif->quirkproc = &ide_undecoded_slave;
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idx[0] = i;
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ide_device_add(idx, NULL);
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if (!hwif->present)
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goto out_disable;
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pci_set_drvdata(dev, hwif);
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hwif->dev = &dev->dev;
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drive = &hwif->drives[0];
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if (drive->present) {
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drive->io_32bit = 1;
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drive->unmask = 1;
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}
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return 0;
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out_disable:
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printk(KERN_ERR "delkin_cb: no IDE devices found\n");
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pci_disable_device(dev);
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return -ENODEV;
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}
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static void
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delkin_cb_remove (struct pci_dev *dev)
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{
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ide_hwif_t *hwif = pci_get_drvdata(dev);
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if (hwif)
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ide_unregister(hwif->index);
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pci_disable_device(dev);
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}
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static struct pci_device_id delkin_cb_pci_tbl[] __devinitdata = {
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{ 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
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{ 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
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{ 0, },
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};
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MODULE_DEVICE_TABLE(pci, delkin_cb_pci_tbl);
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static struct pci_driver driver = {
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.name = "Delkin-ASKA-Workbit Cardbus IDE",
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.id_table = delkin_cb_pci_tbl,
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.probe = delkin_cb_probe,
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.remove = delkin_cb_remove,
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};
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static int
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delkin_cb_init (void)
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{
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return pci_register_driver(&driver);
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}
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static void
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delkin_cb_exit (void)
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{
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pci_unregister_driver(&driver);
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}
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module_init(delkin_cb_init);
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module_exit(delkin_cb_exit);
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MODULE_AUTHOR("Mark Lord");
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MODULE_DESCRIPTION("Basic support for Delkin/ASKA/Workbit Cardbus IDE");
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MODULE_LICENSE("GPL");
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