tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 */
39static 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
46static const struct ide_port_ops delkin_cb_port_ops = {
47 .quirkproc = ide_undecoded_slave,
48};
49
50static 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
56static int __devinit
57delkin_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
97out_disable:
98 pci_release_regions(dev);
99 pci_disable_device(dev);
100 return rc;
101}
102
103static void
104delkin_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
114static 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};
119MODULE_DEVICE_TABLE(pci, delkin_cb_pci_tbl);
120
121static 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
128static int __init delkin_cb_init(void)
129{
130 return pci_register_driver(&driver);
131}
132
133static void __exit delkin_cb_exit(void)
134{
135 pci_unregister_driver(&driver);
136}
137
138module_init(delkin_cb_init);
139module_exit(delkin_cb_exit);
140
141MODULE_AUTHOR("Mark Lord");
142MODULE_DESCRIPTION("Basic support for Delkin/ASKA/Workbit Cardbus IDE");
143MODULE_LICENSE("GPL");
144