drivers/ide/pci/delkin_cb.c

   1 /*
   2  *  Created 20 Oct 2004 by Mark Lord
   3  *
   4  *  Basic support for Delkin/ASKA/Workbit Cardbus CompactFlash adapter
   5  *
   6  *  Modeled after the 16-bit PCMCIA driver: ide-cs.c
   7  *
   8  *  This is slightly peculiar, in that it is a PCI driver,
   9  *  but is NOT an IDE PCI driver -- the IDE layer does not directly
  10  *  support hot insertion/removal of PCI interfaces, so this driver
  11  *  is unable to use the IDE PCI interfaces.  Instead, it uses the
  12  *  same interfaces as the ide-cs (PCMCIA) driver uses.
  13  *  On the plus side, the driver is also smaller/simpler this way.
  14  *
  15  *  This file is subject to the terms and conditions of the GNU General Public
  16  *  License.  See the file COPYING in the main directory of this archive for
  17  *  more details.
  18  */
  19
  20 #include <linux/types.h>
  21 #include <linux/module.h>
  22 #include <linux/hdreg.h>
  23 #include <linux/ide.h>
  24 #include <linux/init.h>
  25 #include <linux/pci.h>
  26
  27 #include <asm/io.h>
  28
  29 /*
  30  * No chip documentation has yet been found,
  31  * so these configuration values were pulled from
  32  * a running Win98 system using "debug".
  33  * This gives around 3MByte/second read performance,
  34  * which is about 2/3 of what the chip is capable of.
  35  *
  36  * There is also a 4KByte mmio region on the card,
  37  * but its purpose has yet to be reverse-engineered.
  38  */
  39 static const u8 setup[] = {
  40         0x00, 0x05, 0xbe, 0x01, 0x20, 0x8f, 0x00, 0x00,
  41         0xa4, 0x1f, 0xb3, 0x1b, 0x00, 0x00, 0x00, 0x80,
  42         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  43         0x00, 0x00, 0x00, 0x00, 0xa4, 0x83, 0x02, 0x13,
  44 };
  45
  46 static int __devinit
  47 delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
  48 {
  49         unsigned long base;
  50         hw_regs_t hw;
  51         ide_hwif_t *hwif = NULL;
  52         ide_drive_t *drive;
  53         int i, rc;
  54         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
  55
  56         rc = pci_enable_device(dev);
  57         if (rc) {
  58                 printk(KERN_ERR "delkin_cb: pci_enable_device failed (%d)\n", rc);
  59                 return rc;
  60         }
  61         rc = pci_request_regions(dev, "delkin_cb");
  62         if (rc) {
  63                 printk(KERN_ERR "delkin_cb: pci_request_regions failed (%d)\n", rc);
  64                 pci_disable_device(dev);
  65                 return rc;
  66         }
  67         base = pci_resource_start(dev, 0);
  68         outb(0x02, base + 0x1e);        /* set nIEN to block interrupts */
  69         inb(base + 0x17);               /* read status to clear interrupts */
  70         for (i = 0; i < sizeof(setup); ++i) {
  71                 if (setup[i])
  72                         outb(setup[i], base + i);
  73         }
  74         pci_release_regions(dev);       /* IDE layer handles regions itself */
  75
  76         memset(&hw, 0, sizeof(hw));
  77         ide_std_init_ports(&hw, base + 0x10, base + 0x1e);
  78         hw.irq = dev->irq;
  79         hw.chipset = ide_pci;           /* this enables IRQ sharing */
  80
  81         hwif = ide_deprecated_find_port(hw.io_ports[IDE_DATA_OFFSET]);
  82         if (hwif == NULL)
  83                 goto out_disable;
  84
  85         i = hwif->index;
  86
  87         if (hwif->present)
  88                 ide_unregister(i, 0, 0);
  89         else if (!hwif->hold)
  90                 ide_init_port_data(hwif, i);
  91
  92         ide_init_port_hw(hwif, &hw);
  93         hwif->quirkproc = &ide_undecoded_slave;
  94
  95         idx[0] = i;
  96
  97         ide_device_add(idx, NULL);
  98
  99         if (!hwif->present)
 100                 goto out_disable;
 101
 102         pci_set_drvdata(dev, hwif);
 103         hwif->dev = &dev->dev;
 104         drive = &hwif->drives[0];
 105         if (drive->present) {
 106                 drive->io_32bit = 1;
 107                 drive->unmask   = 1;
 108         }
 109         return 0;
 110
 111 out_disable:
 112         printk(KERN_ERR "delkin_cb: no IDE devices found\n");
 113         pci_disable_device(dev);
 114         return -ENODEV;
 115 }
 116
 117 static void
 118 delkin_cb_remove (struct pci_dev *dev)
 119 {
 120         ide_hwif_t *hwif = pci_get_drvdata(dev);
 121
 122         if (hwif)
 123                 ide_unregister(hwif->index, 0, 0);
 124
 125         pci_disable_device(dev);
 126 }
 127
 128 static struct pci_device_id delkin_cb_pci_tbl[] __devinitdata = {
 129         { 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 130         { 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 131         { 0, },
 132 };
 133 MODULE_DEVICE_TABLE(pci, delkin_cb_pci_tbl);
 134
 135 static struct pci_driver driver = {
 136         .name           = "Delkin-ASKA-Workbit Cardbus IDE",
 137         .id_table       = delkin_cb_pci_tbl,
 138         .probe          = delkin_cb_probe,
 139         .remove         = delkin_cb_remove,
 140 };
 141
 142 static int
 143 delkin_cb_init (void)
 144 {
 145         return pci_register_driver(&driver);
 146 }
 147
 148 static void
 149 delkin_cb_exit (void)
 150 {
 151         pci_unregister_driver(&driver);
 152 }
 153
 154 module_init(delkin_cb_init);
 155 module_exit(delkin_cb_exit);
 156
 157 MODULE_AUTHOR("Mark Lord");
 158 MODULE_DESCRIPTION("Basic support for Delkin/ASKA/Workbit Cardbus IDE");
 159 MODULE_LICENSE("GPL");
 160