Add linux-next specific files for 20110831
[linux-2.6/next.git] / drivers / tty / ipwireless / main.c
blob655c7948261c79771ef7b788f1a0ca7559336408
1 /*
2 * IPWireless 3G PCMCIA Network Driver
4 * Original code
5 * by Stephen Blackheath <stephen@blacksapphire.com>,
6 * Ben Martel <benm@symmetric.co.nz>
8 * Copyrighted as follows:
9 * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
11 * Various driver changes and rewrites, port to new kernels
12 * Copyright (C) 2006-2007 Jiri Kosina
14 * Misc code cleanups and updates
15 * Copyright (C) 2007 David Sterba
18 #include "hardware.h"
19 #include "network.h"
20 #include "main.h"
21 #include "tty.h"
23 #include <linux/delay.h>
24 #include <linux/init.h>
25 #include <linux/io.h>
26 #include <linux/kernel.h>
27 #include <linux/module.h>
28 #include <linux/sched.h>
29 #include <linux/slab.h>
31 #include <pcmcia/cisreg.h>
32 #include <pcmcia/device_id.h>
33 #include <pcmcia/ss.h>
34 #include <pcmcia/ds.h>
36 static const struct pcmcia_device_id ipw_ids[] = {
37 PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0100),
38 PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0200),
39 PCMCIA_DEVICE_NULL
41 MODULE_DEVICE_TABLE(pcmcia, ipw_ids);
43 static void ipwireless_detach(struct pcmcia_device *link);
46 * Module params
48 /* Debug mode: more verbose, print sent/recv bytes */
49 int ipwireless_debug;
50 int ipwireless_loopback;
51 int ipwireless_out_queue = 10;
53 module_param_named(debug, ipwireless_debug, int, 0);
54 module_param_named(loopback, ipwireless_loopback, int, 0);
55 module_param_named(out_queue, ipwireless_out_queue, int, 0);
56 MODULE_PARM_DESC(debug, "switch on debug messages [0]");
57 MODULE_PARM_DESC(loopback,
58 "debug: enable ras_raw channel [0]");
59 MODULE_PARM_DESC(out_queue, "debug: set size of outgoing PPP queue [10]");
61 /* Executes in process context. */
62 static void signalled_reboot_work(struct work_struct *work_reboot)
64 struct ipw_dev *ipw = container_of(work_reboot, struct ipw_dev,
65 work_reboot);
66 struct pcmcia_device *link = ipw->link;
67 pcmcia_reset_card(link->socket);
70 static void signalled_reboot_callback(void *callback_data)
72 struct ipw_dev *ipw = (struct ipw_dev *) callback_data;
74 /* Delegate to process context. */
75 schedule_work(&ipw->work_reboot);
78 static int ipwireless_probe(struct pcmcia_device *p_dev, void *priv_data)
80 struct ipw_dev *ipw = priv_data;
81 int ret;
83 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
84 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
86 /* 0x40 causes it to generate level mode interrupts. */
87 /* 0x04 enables IREQ pin. */
88 p_dev->config_index |= 0x44;
89 p_dev->io_lines = 16;
90 ret = pcmcia_request_io(p_dev);
91 if (ret)
92 return ret;
94 if (!request_region(p_dev->resource[0]->start,
95 resource_size(p_dev->resource[0]),
96 IPWIRELESS_PCCARD_NAME)) {
97 ret = -EBUSY;
98 goto exit;
101 p_dev->resource[2]->flags |=
102 WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM | WIN_ENABLE;
104 ret = pcmcia_request_window(p_dev, p_dev->resource[2], 0);
105 if (ret != 0)
106 goto exit1;
108 ret = pcmcia_map_mem_page(p_dev, p_dev->resource[2], p_dev->card_addr);
109 if (ret != 0)
110 goto exit1;
112 ipw->is_v2_card = resource_size(p_dev->resource[2]) == 0x100;
114 ipw->common_memory = ioremap(p_dev->resource[2]->start,
115 resource_size(p_dev->resource[2]));
116 if (!request_mem_region(p_dev->resource[2]->start,
117 resource_size(p_dev->resource[2]),
118 IPWIRELESS_PCCARD_NAME)) {
119 ret = -EBUSY;
120 goto exit2;
123 p_dev->resource[3]->flags |= WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_AM |
124 WIN_ENABLE;
125 p_dev->resource[3]->end = 0; /* this used to be 0x1000 */
126 ret = pcmcia_request_window(p_dev, p_dev->resource[3], 0);
127 if (ret != 0)
128 goto exit3;
130 ret = pcmcia_map_mem_page(p_dev, p_dev->resource[3], 0);
131 if (ret != 0)
132 goto exit3;
134 ipw->attr_memory = ioremap(p_dev->resource[3]->start,
135 resource_size(p_dev->resource[3]));
136 if (!request_mem_region(p_dev->resource[3]->start,
137 resource_size(p_dev->resource[3]),
138 IPWIRELESS_PCCARD_NAME)) {
139 ret = -EBUSY;
140 goto exit4;
143 return 0;
145 exit4:
146 iounmap(ipw->attr_memory);
147 exit3:
148 release_mem_region(p_dev->resource[2]->start,
149 resource_size(p_dev->resource[2]));
150 exit2:
151 iounmap(ipw->common_memory);
152 exit1:
153 release_region(p_dev->resource[0]->start,
154 resource_size(p_dev->resource[0]));
155 exit:
156 pcmcia_disable_device(p_dev);
157 return ret;
160 static int config_ipwireless(struct ipw_dev *ipw)
162 struct pcmcia_device *link = ipw->link;
163 int ret = 0;
165 ipw->is_v2_card = 0;
166 link->config_flags |= CONF_AUTO_SET_IO | CONF_AUTO_SET_IOMEM |
167 CONF_ENABLE_IRQ;
169 ret = pcmcia_loop_config(link, ipwireless_probe, ipw);
170 if (ret != 0)
171 return ret;
173 INIT_WORK(&ipw->work_reboot, signalled_reboot_work);
175 ipwireless_init_hardware_v1(ipw->hardware, link->resource[0]->start,
176 ipw->attr_memory, ipw->common_memory,
177 ipw->is_v2_card, signalled_reboot_callback,
178 ipw);
180 ret = pcmcia_request_irq(link, ipwireless_interrupt);
181 if (ret != 0)
182 goto exit;
184 printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": Card type %s\n",
185 ipw->is_v2_card ? "V2/V3" : "V1");
186 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
187 ": I/O ports %pR, irq %d\n", link->resource[0],
188 (unsigned int) link->irq);
189 if (ipw->attr_memory && ipw->common_memory)
190 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
191 ": attr memory %pR, common memory %pR\n",
192 link->resource[3],
193 link->resource[2]);
195 ipw->network = ipwireless_network_create(ipw->hardware);
196 if (!ipw->network)
197 goto exit;
199 ipw->tty = ipwireless_tty_create(ipw->hardware, ipw->network);
200 if (!ipw->tty)
201 goto exit;
203 ipwireless_init_hardware_v2_v3(ipw->hardware);
206 * Do the RequestConfiguration last, because it enables interrupts.
207 * Then we don't get any interrupts before we're ready for them.
209 ret = pcmcia_enable_device(link);
210 if (ret != 0)
211 goto exit;
213 return 0;
215 exit:
216 if (ipw->common_memory) {
217 release_mem_region(link->resource[2]->start,
218 resource_size(link->resource[2]));
219 iounmap(ipw->common_memory);
221 if (ipw->attr_memory) {
222 release_mem_region(link->resource[3]->start,
223 resource_size(link->resource[3]));
224 iounmap(ipw->attr_memory);
226 pcmcia_disable_device(link);
227 return -1;
230 static void release_ipwireless(struct ipw_dev *ipw)
232 release_region(ipw->link->resource[0]->start,
233 resource_size(ipw->link->resource[0]));
234 if (ipw->common_memory) {
235 release_mem_region(ipw->link->resource[2]->start,
236 resource_size(ipw->link->resource[2]));
237 iounmap(ipw->common_memory);
239 if (ipw->attr_memory) {
240 release_mem_region(ipw->link->resource[3]->start,
241 resource_size(ipw->link->resource[3]));
242 iounmap(ipw->attr_memory);
244 pcmcia_disable_device(ipw->link);
248 * ipwireless_attach() creates an "instance" of the driver, allocating
249 * local data structures for one device (one interface). The device
250 * is registered with Card Services.
252 * The pcmcia_device structure is initialized, but we don't actually
253 * configure the card at this point -- we wait until we receive a
254 * card insertion event.
256 static int ipwireless_attach(struct pcmcia_device *link)
258 struct ipw_dev *ipw;
259 int ret;
261 ipw = kzalloc(sizeof(struct ipw_dev), GFP_KERNEL);
262 if (!ipw)
263 return -ENOMEM;
265 ipw->link = link;
266 link->priv = ipw;
268 ipw->hardware = ipwireless_hardware_create();
269 if (!ipw->hardware) {
270 kfree(ipw);
271 return -ENOMEM;
273 /* RegisterClient will call config_ipwireless */
275 ret = config_ipwireless(ipw);
277 if (ret != 0) {
278 ipwireless_detach(link);
279 return ret;
282 return 0;
286 * This deletes a driver "instance". The device is de-registered with
287 * Card Services. If it has been released, all local data structures
288 * are freed. Otherwise, the structures will be freed when the device
289 * is released.
291 static void ipwireless_detach(struct pcmcia_device *link)
293 struct ipw_dev *ipw = link->priv;
295 release_ipwireless(ipw);
297 if (ipw->tty != NULL)
298 ipwireless_tty_free(ipw->tty);
299 if (ipw->network != NULL)
300 ipwireless_network_free(ipw->network);
301 if (ipw->hardware != NULL)
302 ipwireless_hardware_free(ipw->hardware);
303 kfree(ipw);
306 static struct pcmcia_driver me = {
307 .owner = THIS_MODULE,
308 .probe = ipwireless_attach,
309 .remove = ipwireless_detach,
310 .name = IPWIRELESS_PCCARD_NAME,
311 .id_table = ipw_ids
315 * Module insertion : initialisation of the module.
316 * Register the card with cardmgr...
318 static int __init init_ipwireless(void)
320 int ret;
322 ret = ipwireless_tty_init();
323 if (ret != 0)
324 return ret;
326 ret = pcmcia_register_driver(&me);
327 if (ret != 0)
328 ipwireless_tty_release();
330 return ret;
334 * Module removal
336 static void __exit exit_ipwireless(void)
338 pcmcia_unregister_driver(&me);
339 ipwireless_tty_release();
342 module_init(init_ipwireless);
343 module_exit(exit_ipwireless);
345 MODULE_AUTHOR(IPWIRELESS_PCMCIA_AUTHOR);
346 MODULE_DESCRIPTION(IPWIRELESS_PCCARD_NAME " " IPWIRELESS_PCMCIA_VERSION);
347 MODULE_LICENSE("GPL");