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 const struct ide_port_ops delkin_cb_port_ops = {
  47         .quirkproc              = ide_undecoded_slave,
  48 };
  49
  50 static const struct ide_port_info delkin_cb_port_info = {
  51         .port_ops               = &delkin_cb_port_ops,
  52         .host_flags             = IDE_HFLAG_IO_32BIT | IDE_HFLAG_UNMASK_IRQS |
  53                                   IDE_HFLAG_NO_DMA,
  54 };
  55
  56 static int __devinit
  57 delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
  58 {
  59         struct ide_host *host;
  60         unsigned long base;
  61         int i, rc;
  62         hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
  63
  64         rc = pci_enable_device(dev);
  65         if (rc) {
  66                 printk(KERN_ERR "delkin_cb: pci_enable_device failed (%d)\n", rc);
  67                 return rc;
  68         }
  69         rc = pci_request_regions(dev, "delkin_cb");
  70         if (rc) {
  71                 printk(KERN_ERR "delkin_cb: pci_request_regions failed (%d)\n", rc);
  72                 pci_disable_device(dev);
  73                 return rc;
  74         }
  75         base = pci_resource_start(dev, 0);
  76         outb(0x02, base + 0x1e);        /* set nIEN to block interrupts */
  77         inb(base + 0x17);               /* read status to clear interrupts */
  78         for (i = 0; i < sizeof(setup); ++i) {
  79                 if (setup[i])
  80                         outb(setup[i], base + i);
  81         }
  82
  83         memset(&hw, 0, sizeof(hw));
  84         ide_std_init_ports(&hw, base + 0x10, base + 0x1e);
  85         hw.irq = dev->irq;
  86         hw.dev = &dev->dev;
  87         hw.chipset = ide_pci;           /* this enables IRQ sharing */
  88
  89         rc = ide_host_add(&delkin_cb_port_info, hws, &host);
  90         if (rc)
  91                 goto out_disable;
  92
  93         pci_set_drvdata(dev, host);
  94
  95         return 0;
  96
  97 out_disable:
  98         pci_release_regions(dev);
  99         pci_disable_device(dev);
 100         return rc;
 101 }
 102
 103 static void
 104 delkin_cb_remove (struct pci_dev *dev)
 105 {
 106         struct ide_host *host = pci_get_drvdata(dev);
 107
 108         ide_host_remove(host);
 109
 110         pci_release_regions(dev);
 111         pci_disable_device(dev);
 112 }
 113
 114 static struct pci_device_id delkin_cb_pci_tbl[] __devinitdata = {
 115         { 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 116         { 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 117         { 0, },
 118 };
 119 MODULE_DEVICE_TABLE(pci, delkin_cb_pci_tbl);
 120
 121 static struct pci_driver driver = {
 122         .name           = "Delkin-ASKA-Workbit Cardbus IDE",
 123         .id_table       = delkin_cb_pci_tbl,
 124         .probe          = delkin_cb_probe,
 125         .remove         = delkin_cb_remove,
 126 };
 127
 128 static int __init delkin_cb_init(void)
 129 {
 130         return pci_register_driver(&driver);
 131 }
 132
 133 static void __exit delkin_cb_exit(void)
 134 {
 135         pci_unregister_driver(&driver);
 136 }
 137
 138 module_init(delkin_cb_init);
 139 module_exit(delkin_cb_exit);
 140
 141 MODULE_AUTHOR("Mark Lord");
 142 MODULE_DESCRIPTION("Basic support for Delkin/ASKA/Workbit Cardbus IDE");
 143 MODULE_LICENSE("GPL");
 144