drivers/ide/pci/delkin_cb.c

   1 /*
   2  *  linux/drivers/ide/pci/delkin_cb.c
   3  *
   4  *  Created 20 Oct 2004 by Mark Lord
   5  *
   6  *  Basic support for Delkin/ASKA/Workbit Cardbus CompactFlash adapter
   7  *
   8  *  Modeled after the 16-bit PCMCIA driver: ide-cs.c
   9  *
  10  *  This is slightly peculiar, in that it is a PCI driver,
  11  *  but is NOT an IDE PCI driver -- the IDE layer does not directly
  12  *  support hot insertion/removal of PCI interfaces, so this driver
  13  *  is unable to use the IDE PCI interfaces.  Instead, it uses the
  14  *  same interfaces as the ide-cs (PCMCIA) driver uses.
  15  *  On the plus side, the driver is also smaller/simpler this way.
  16  *
  17  *  This file is subject to the terms and conditions of the GNU General Public
  18  *  License.  See the file COPYING in the main directory of this archive for
  19  *  more details.
  20  */
  21 #include <linux/autoconf.h>
  22 #include <linux/types.h>
  23 #include <linux/module.h>
  24 #include <linux/mm.h>
  25 #include <linux/blkdev.h>
  26 #include <linux/hdreg.h>
  27 #include <linux/ide.h>
  28 #include <linux/init.h>
  29 #include <linux/pci.h>
  30 #include <asm/io.h>
  31
  32 /*
  33  * No chip documentation has yet been found,
  34  * so these configuration values were pulled from
  35  * a running Win98 system using "debug".
  36  * This gives around 3MByte/second read performance,
  37  * which is about 2/3 of what the chip is capable of.
  38  *
  39  * There is also a 4KByte mmio region on the card,
  40  * but its purpose has yet to be reverse-engineered.
  41  */
  42 static const u8 setup[] = {
  43         0x00, 0x05, 0xbe, 0x01, 0x20, 0x8f, 0x00, 0x00,
  44         0xa4, 0x1f, 0xb3, 0x1b, 0x00, 0x00, 0x00, 0x80,
  45         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  46         0x00, 0x00, 0x00, 0x00, 0xa4, 0x83, 0x02, 0x13,
  47 };
  48
  49 static int __devinit
  50 delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
  51 {
  52         unsigned long base;
  53         hw_regs_t hw;
  54         ide_hwif_t *hwif = NULL;
  55         ide_drive_t *drive;
  56         int i, rc;
  57
  58         rc = pci_enable_device(dev);
  59         if (rc) {
  60                 printk(KERN_ERR "delkin_cb: pci_enable_device failed (%d)\n", rc);
  61                 return rc;
  62         }
  63         rc = pci_request_regions(dev, "delkin_cb");
  64         if (rc) {
  65                 printk(KERN_ERR "delkin_cb: pci_request_regions failed (%d)\n", rc);
  66                 pci_disable_device(dev);
  67                 return rc;
  68         }
  69         base = pci_resource_start(dev, 0);
  70         outb(0x02, base + 0x1e);        /* set nIEN to block interrupts */
  71         inb(base + 0x17);               /* read status to clear interrupts */
  72         for (i = 0; i < sizeof(setup); ++i) {
  73                 if (setup[i])
  74                         outb(setup[i], base + i);
  75         }
  76         pci_release_regions(dev);       /* IDE layer handles regions itself */
  77
  78         memset(&hw, 0, sizeof(hw));
  79         ide_std_init_ports(&hw, base + 0x10, base + 0x1e);
  80         hw.irq = dev->irq;
  81         hw.chipset = ide_pci;           /* this enables IRQ sharing */
  82
  83         rc = ide_register_hw_with_fixup(&hw, 0, &hwif, ide_undecoded_slave);
  84         if (rc < 0) {
  85                 printk(KERN_ERR "delkin_cb: ide_register_hw failed (%d)\n", rc);
  86                 pci_disable_device(dev);
  87                 return -ENODEV;
  88         }
  89         pci_set_drvdata(dev, hwif);
  90         hwif->pci_dev = dev;
  91         drive = &hwif->drives[0];
  92         if (drive->present) {
  93                 drive->io_32bit = 1;
  94                 drive->unmask   = 1;
  95         }
  96         return 0;
  97 }
  98
  99 static void
 100 delkin_cb_remove (struct pci_dev *dev)
 101 {
 102         ide_hwif_t *hwif = pci_get_drvdata(dev);
 103
 104         if (hwif)
 105                 ide_unregister(hwif->index);
 106         pci_disable_device(dev);
 107 }
 108
 109 static struct pci_device_id delkin_cb_pci_tbl[] __devinitdata = {
 110         { 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 111         { 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 112         { 0, },
 113 };
 114 MODULE_DEVICE_TABLE(pci, delkin_cb_pci_tbl);
 115
 116 static struct pci_driver driver = {
 117         .name           = "Delkin-ASKA-Workbit Cardbus IDE",
 118         .id_table       = delkin_cb_pci_tbl,
 119         .probe          = delkin_cb_probe,
 120         .remove         = delkin_cb_remove,
 121 };
 122
 123 static int
 124 delkin_cb_init (void)
 125 {
 126         return pci_register_driver(&driver);
 127 }
 128
 129 static void
 130 delkin_cb_exit (void)
 131 {
 132         pci_unregister_driver(&driver);
 133 }
 134
 135 module_init(delkin_cb_init);
 136 module_exit(delkin_cb_exit);
 137
 138 MODULE_AUTHOR("Mark Lord");
 139 MODULE_DESCRIPTION("Basic support for Delkin/ASKA/Workbit Cardbus IDE");
 140 MODULE_LICENSE("GPL");
 141