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 */ 42static 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 49static int __devinit 50delkin_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 99static void 100delkin_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 109static 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}; 114MODULE_DEVICE_TABLE(pci, delkin_cb_pci_tbl); 115 116static 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 123static int 124delkin_cb_init (void) 125{ 126 return pci_register_driver(&driver); 127} 128 129static void 130delkin_cb_exit (void) 131{ 132 pci_unregister_driver(&driver); 133} 134 135module_init(delkin_cb_init); 136module_exit(delkin_cb_exit); 137 138MODULE_AUTHOR("Mark Lord"); 139MODULE_DESCRIPTION("Basic support for Delkin/ASKA/Workbit Cardbus IDE"); 140MODULE_LICENSE("GPL"); 141