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2011-09-10 Initial commit of SE sources for msm7x27
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
49 static unsigned 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 .init_chipset = delkin_cb_init_chipset,
70 };
71
72 static int __devinit
73 delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
74 {
75 struct ide_host *host;
76 unsigned long base;
77 int rc;
78 hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
79
80 rc = pci_enable_device(dev);
81 if (rc) {
82 printk(KERN_ERR "delkin_cb: pci_enable_device failed (%d)\n", rc);
83 return rc;
84 }
85 rc = pci_request_regions(dev, "delkin_cb");
86 if (rc) {
87 printk(KERN_ERR "delkin_cb: pci_request_regions failed (%d)\n", rc);
88 pci_disable_device(dev);
89 return rc;
90 }
91 base = pci_resource_start(dev, 0);
92
93 delkin_cb_init_chipset(dev);
94
95 memset(&hw, 0, sizeof(hw));
96 ide_std_init_ports(&hw, base + 0x10, base + 0x1e);
97 hw.irq = dev->irq;
98 hw.dev = &dev->dev;
99 hw.chipset = ide_pci; /* this enables IRQ sharing */
100
101 rc = ide_host_add(&delkin_cb_port_info, hws, &host);
102 if (rc)
103 goto out_disable;
104
105 pci_set_drvdata(dev, host);
106
107 return 0;
108
109 out_disable:
110 pci_release_regions(dev);
111 pci_disable_device(dev);
112 return rc;
113 }
114
115 static void
116 delkin_cb_remove (struct pci_dev *dev)
117 {
118 struct ide_host *host = pci_get_drvdata(dev);
119
120 ide_host_remove(host);
121
122 pci_release_regions(dev);
123 pci_disable_device(dev);
124 }
125
126 #ifdef CONFIG_PM
127 static int delkin_cb_suspend(struct pci_dev *dev, pm_message_t state)
128 {
129 pci_save_state(dev);
130 pci_disable_device(dev);
131 pci_set_power_state(dev, pci_choose_state(dev, state));
132
133 return 0;
134 }
135
136 static int delkin_cb_resume(struct pci_dev *dev)
137 {
138 struct ide_host *host = pci_get_drvdata(dev);
139 int rc;
140
141 pci_set_power_state(dev, PCI_D0);
142
143 rc = pci_enable_device(dev);
144 if (rc)
145 return rc;
146
147 pci_restore_state(dev);
148 pci_set_master(dev);
149
150 if (host->init_chipset)
151 host->init_chipset(dev);
152
153 return 0;
154 }
155 #else
156 #define delkin_cb_suspend NULL
157 #define delkin_cb_resume NULL
158 #endif
159
160 static struct pci_device_id delkin_cb_pci_tbl[] __devinitdata = {
161 { 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
162 { 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
163 { 0, },
164 };
165 MODULE_DEVICE_TABLE(pci, delkin_cb_pci_tbl);
166
167 static struct pci_driver delkin_cb_pci_driver = {
168 .name = "Delkin-ASKA-Workbit Cardbus IDE",
169 .id_table = delkin_cb_pci_tbl,
170 .probe = delkin_cb_probe,
171 .remove = delkin_cb_remove,
172 .suspend = delkin_cb_suspend,
173 .resume = delkin_cb_resume,
174 };
175
176 static int __init delkin_cb_init(void)
177 {
178 return pci_register_driver(&delkin_cb_pci_driver);
179 }
180
181 static void __exit delkin_cb_exit(void)
182 {
183 pci_unregister_driver(&delkin_cb_pci_driver);
184 }
185
186 module_init(delkin_cb_init);
187 module_exit(delkin_cb_exit);
188
189 MODULE_AUTHOR("Mark Lord");
190 MODULE_DESCRIPTION("Basic support for Delkin/ASKA/Workbit Cardbus IDE");
191 MODULE_LICENSE("GPL");
192
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