Root/
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 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 delkin_cb_probe(struct pci_dev *dev, const struct pci_device_id *id) |
75 | { |
76 | struct ide_host *host; |
77 | unsigned long base; |
78 | int rc; |
79 | struct ide_hw hw, *hws[] = { &hw }; |
80 | |
81 | rc = pci_enable_device(dev); |
82 | if (rc) { |
83 | printk(KERN_ERR "delkin_cb: pci_enable_device failed (%d)\n", rc); |
84 | return rc; |
85 | } |
86 | rc = pci_request_regions(dev, "delkin_cb"); |
87 | if (rc) { |
88 | printk(KERN_ERR "delkin_cb: pci_request_regions failed (%d)\n", rc); |
89 | pci_disable_device(dev); |
90 | return rc; |
91 | } |
92 | base = pci_resource_start(dev, 0); |
93 | |
94 | delkin_cb_init_chipset(dev); |
95 | |
96 | memset(&hw, 0, sizeof(hw)); |
97 | ide_std_init_ports(&hw, base + 0x10, base + 0x1e); |
98 | hw.irq = dev->irq; |
99 | hw.dev = &dev->dev; |
100 | |
101 | rc = ide_host_add(&delkin_cb_port_info, hws, 1, &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[] = { |
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 | |
193 |
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