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/ide.h>
23 #include <linux/init.h>
24 #include <linux/pci.h>
25
26 #include <asm/io.h>
27
28 /*
29 * No chip documentation has yet been found,
30 * so these configuration values were pulled from
31 * a running Win98 system using "debug".
32 * This gives around 3MByte/second read performance,
33 * which is about 2/3 of what the chip is capable of.
34 *
35 * There is also a 4KByte mmio region on the card,
36 * but its purpose has yet to be reverse-engineered.
37 */
38 static const u8 setup[] = {
39 0x00, 0x05, 0xbe, 0x01, 0x20, 0x8f, 0x00, 0x00,
40 0xa4, 0x1f, 0xb3, 0x1b, 0x00, 0x00, 0x00, 0x80,
41 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
42 0x00, 0x00, 0x00, 0x00, 0xa4, 0x83, 0x02, 0x13,
43 };
44
45 static const struct ide_port_ops delkin_cb_port_ops = {
46 .quirkproc = ide_undecoded_slave,
47 };
48
delkin_cb_init_chipset(struct pci_dev * dev)49 static int delkin_cb_init_chipset(struct pci_dev *dev)
50 {
51 unsigned long base = pci_resource_start(dev, 0);
52 int i;
53
54 outb(0x02, base + 0x1e); /* set nIEN to block interrupts */
55 inb(base + 0x17); /* read status to clear interrupts */
56
57 for (i = 0; i < sizeof(setup); ++i) {
58 if (setup[i])
59 outb(setup[i], base + i);
60 }
61
62 return 0;
63 }
64
65 static const struct ide_port_info delkin_cb_port_info = {
66 .port_ops = &delkin_cb_port_ops,
67 .host_flags = IDE_HFLAG_IO_32BIT | IDE_HFLAG_UNMASK_IRQS |
68 IDE_HFLAG_NO_DMA,
69 .irq_flags = IRQF_SHARED,
70 .init_chipset = delkin_cb_init_chipset,
71 .chipset = ide_pci,
72 };
73
74 static int __devinit
delkin_cb_probe(struct pci_dev * dev,const struct pci_device_id * id)75 delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
76 {
77 struct ide_host *host;
78 unsigned long base;
79 int rc;
80 struct ide_hw hw, *hws[] = { &hw };
81
82 rc = pci_enable_device(dev);
83 if (rc) {
84 printk(KERN_ERR "delkin_cb: pci_enable_device failed (%d)\n", rc);
85 return rc;
86 }
87 rc = pci_request_regions(dev, "delkin_cb");
88 if (rc) {
89 printk(KERN_ERR "delkin_cb: pci_request_regions failed (%d)\n", rc);
90 pci_disable_device(dev);
91 return rc;
92 }
93 base = pci_resource_start(dev, 0);
94
95 delkin_cb_init_chipset(dev);
96
97 memset(&hw, 0, sizeof(hw));
98 ide_std_init_ports(&hw, base + 0x10, base + 0x1e);
99 hw.irq = dev->irq;
100 hw.dev = &dev->dev;
101
102 rc = ide_host_add(&delkin_cb_port_info, hws, 1, &host);
103 if (rc)
104 goto out_disable;
105
106 pci_set_drvdata(dev, host);
107
108 return 0;
109
110 out_disable:
111 pci_release_regions(dev);
112 pci_disable_device(dev);
113 return rc;
114 }
115
116 static void
delkin_cb_remove(struct pci_dev * dev)117 delkin_cb_remove (struct pci_dev *dev)
118 {
119 struct ide_host *host = pci_get_drvdata(dev);
120
121 ide_host_remove(host);
122
123 pci_release_regions(dev);
124 pci_disable_device(dev);
125 }
126
127 #ifdef CONFIG_PM
delkin_cb_suspend(struct pci_dev * dev,pm_message_t state)128 static int delkin_cb_suspend(struct pci_dev *dev, pm_message_t state)
129 {
130 pci_save_state(dev);
131 pci_disable_device(dev);
132 pci_set_power_state(dev, pci_choose_state(dev, state));
133
134 return 0;
135 }
136
delkin_cb_resume(struct pci_dev * dev)137 static int delkin_cb_resume(struct pci_dev *dev)
138 {
139 struct ide_host *host = pci_get_drvdata(dev);
140 int rc;
141
142 pci_set_power_state(dev, PCI_D0);
143
144 rc = pci_enable_device(dev);
145 if (rc)
146 return rc;
147
148 pci_restore_state(dev);
149 pci_set_master(dev);
150
151 if (host->init_chipset)
152 host->init_chipset(dev);
153
154 return 0;
155 }
156 #else
157 #define delkin_cb_suspend NULL
158 #define delkin_cb_resume NULL
159 #endif
160
161 static struct pci_device_id delkin_cb_pci_tbl[] __devinitdata = {
162 { 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
163 { 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
164 { 0, },
165 };
166 MODULE_DEVICE_TABLE(pci, delkin_cb_pci_tbl);
167
168 static struct pci_driver delkin_cb_pci_driver = {
169 .name = "Delkin-ASKA-Workbit Cardbus IDE",
170 .id_table = delkin_cb_pci_tbl,
171 .probe = delkin_cb_probe,
172 .remove = delkin_cb_remove,
173 .suspend = delkin_cb_suspend,
174 .resume = delkin_cb_resume,
175 };
176
delkin_cb_init(void)177 static int __init delkin_cb_init(void)
178 {
179 return pci_register_driver(&delkin_cb_pci_driver);
180 }
181
delkin_cb_exit(void)182 static void __exit delkin_cb_exit(void)
183 {
184 pci_unregister_driver(&delkin_cb_pci_driver);
185 }
186
187 module_init(delkin_cb_init);
188 module_exit(delkin_cb_exit);
189
190 MODULE_AUTHOR("Mark Lord");
191 MODULE_DESCRIPTION("Basic support for Delkin/ASKA/Workbit Cardbus IDE");
192 MODULE_LICENSE("GPL");
193
194