pcmcia: Pass struct pcmcia_device to pcmcia_release_window()
[linux-2.6.git] / drivers / char / pcmcia / ipwireless / main.c
1 /*
2  * IPWireless 3G PCMCIA Network Driver
3  *
4  * Original code
5  *   by Stephen Blackheath <stephen@blacksapphire.com>,
6  *      Ben Martel <benm@symmetric.co.nz>
7  *
8  * Copyrighted as follows:
9  *   Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
10  *
11  * Various driver changes and rewrites, port to new kernels
12  *   Copyright (C) 2006-2007 Jiri Kosina
13  *
14  * Misc code cleanups and updates
15  *   Copyright (C) 2007 David Sterba
16  */
17
18 #include "hardware.h"
19 #include "network.h"
20 #include "main.h"
21 #include "tty.h"
22
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>
30
31 #include <pcmcia/cisreg.h>
32 #include <pcmcia/device_id.h>
33 #include <pcmcia/ss.h>
34 #include <pcmcia/ds.h>
35 #include <pcmcia/cs.h>
36
37 static struct pcmcia_device_id ipw_ids[] = {
38         PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0100),
39         PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0200),
40         PCMCIA_DEVICE_NULL
41 };
42 MODULE_DEVICE_TABLE(pcmcia, ipw_ids);
43
44 static void ipwireless_detach(struct pcmcia_device *link);
45
46 /*
47  * Module params
48  */
49 /* Debug mode: more verbose, print sent/recv bytes */
50 int ipwireless_debug;
51 int ipwireless_loopback;
52 int ipwireless_out_queue = 10;
53
54 module_param_named(debug, ipwireless_debug, int, 0);
55 module_param_named(loopback, ipwireless_loopback, int, 0);
56 module_param_named(out_queue, ipwireless_out_queue, int, 0);
57 MODULE_PARM_DESC(debug, "switch on debug messages [0]");
58 MODULE_PARM_DESC(loopback,
59                 "debug: enable ras_raw channel [0]");
60 MODULE_PARM_DESC(out_queue, "debug: set size of outgoing PPP queue [10]");
61
62 /* Executes in process context. */
63 static void signalled_reboot_work(struct work_struct *work_reboot)
64 {
65         struct ipw_dev *ipw = container_of(work_reboot, struct ipw_dev,
66                         work_reboot);
67         struct pcmcia_device *link = ipw->link;
68         pcmcia_reset_card(link->socket);
69 }
70
71 static void signalled_reboot_callback(void *callback_data)
72 {
73         struct ipw_dev *ipw = (struct ipw_dev *) callback_data;
74
75         /* Delegate to process context. */
76         schedule_work(&ipw->work_reboot);
77 }
78
79 static int ipwireless_probe(struct pcmcia_device *p_dev,
80                             cistpl_cftable_entry_t *cfg,
81                             cistpl_cftable_entry_t *dflt,
82                             unsigned int vcc,
83                             void *priv_data)
84 {
85         struct ipw_dev *ipw = priv_data;
86         struct resource *io_resource;
87         memreq_t memreq_attr_memory;
88         memreq_t memreq_common_memory;
89         int ret;
90
91         p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
92         p_dev->io.BasePort1 = cfg->io.win[0].base;
93         p_dev->io.NumPorts1 = cfg->io.win[0].len;
94         p_dev->io.IOAddrLines = 16;
95
96         p_dev->irq.IRQInfo1 = cfg->irq.IRQInfo1;
97
98         /* 0x40 causes it to generate level mode interrupts. */
99         /* 0x04 enables IREQ pin. */
100         p_dev->conf.ConfigIndex = cfg->index | 0x44;
101         ret = pcmcia_request_io(p_dev, &p_dev->io);
102         if (ret)
103                 return ret;
104
105         io_resource = request_region(p_dev->io.BasePort1, p_dev->io.NumPorts1,
106                                 IPWIRELESS_PCCARD_NAME);
107
108         if (cfg->mem.nwin == 0)
109                 return 0;
110
111         ipw->request_common_memory.Attributes =
112                 WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM | WIN_ENABLE;
113         ipw->request_common_memory.Base = cfg->mem.win[0].host_addr;
114         ipw->request_common_memory.Size = cfg->mem.win[0].len;
115         if (ipw->request_common_memory.Size < 0x1000)
116                 ipw->request_common_memory.Size = 0x1000;
117         ipw->request_common_memory.AccessSpeed = 0;
118
119         ret = pcmcia_request_window(&p_dev, &ipw->request_common_memory,
120                                 &ipw->handle_common_memory);
121
122         if (ret != 0)
123                 goto exit1;
124
125         memreq_common_memory.CardOffset = cfg->mem.win[0].card_addr;
126         memreq_common_memory.Page = 0;
127
128         ret = pcmcia_map_mem_page(ipw->handle_common_memory,
129                                 &memreq_common_memory);
130
131         if (ret != 0)
132                 goto exit2;
133
134         ipw->is_v2_card = cfg->mem.win[0].len == 0x100;
135
136         ipw->common_memory = ioremap(ipw->request_common_memory.Base,
137                                 ipw->request_common_memory.Size);
138         request_mem_region(ipw->request_common_memory.Base,
139                         ipw->request_common_memory.Size,
140                         IPWIRELESS_PCCARD_NAME);
141
142         ipw->request_attr_memory.Attributes =
143                 WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_AM | WIN_ENABLE;
144         ipw->request_attr_memory.Base = 0;
145         ipw->request_attr_memory.Size = 0;      /* this used to be 0x1000 */
146         ipw->request_attr_memory.AccessSpeed = 0;
147
148         ret = pcmcia_request_window(&p_dev, &ipw->request_attr_memory,
149                                 &ipw->handle_attr_memory);
150
151         if (ret != 0)
152                 goto exit2;
153
154         memreq_attr_memory.CardOffset = 0;
155         memreq_attr_memory.Page = 0;
156
157         ret = pcmcia_map_mem_page(ipw->handle_attr_memory,
158                                 &memreq_attr_memory);
159
160         if (ret != 0)
161                 goto exit3;
162
163         ipw->attr_memory = ioremap(ipw->request_attr_memory.Base,
164                                 ipw->request_attr_memory.Size);
165         request_mem_region(ipw->request_attr_memory.Base,
166                         ipw->request_attr_memory.Size, IPWIRELESS_PCCARD_NAME);
167
168         return 0;
169
170 exit3:
171         pcmcia_release_window(p_dev, ipw->handle_attr_memory);
172 exit2:
173         if (ipw->common_memory) {
174                 release_mem_region(ipw->request_common_memory.Base,
175                                 ipw->request_common_memory.Size);
176                 iounmap(ipw->common_memory);
177                 pcmcia_release_window(p_dev, ipw->handle_common_memory);
178         } else
179                 pcmcia_release_window(p_dev, ipw->handle_common_memory);
180 exit1:
181         release_resource(io_resource);
182         pcmcia_disable_device(p_dev);
183         return -1;
184 }
185
186 static int config_ipwireless(struct ipw_dev *ipw)
187 {
188         struct pcmcia_device *link = ipw->link;
189         int ret = 0;
190
191         ipw->is_v2_card = 0;
192
193         ret = pcmcia_loop_config(link, ipwireless_probe, ipw);
194         if (ret != 0)
195                 return ret;
196
197         link->conf.Attributes = CONF_ENABLE_IRQ;
198         link->conf.IntType = INT_MEMORY_AND_IO;
199
200         link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING | IRQ_HANDLE_PRESENT;
201         link->irq.Handler = ipwireless_interrupt;
202         link->irq.Instance = ipw->hardware;
203
204         INIT_WORK(&ipw->work_reboot, signalled_reboot_work);
205
206         ipwireless_init_hardware_v1(ipw->hardware, link->io.BasePort1,
207                                     ipw->attr_memory, ipw->common_memory,
208                                     ipw->is_v2_card, signalled_reboot_callback,
209                                     ipw);
210
211         ret = pcmcia_request_irq(link, &link->irq);
212
213         if (ret != 0)
214                 goto exit;
215
216         printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": Card type %s\n",
217                         ipw->is_v2_card ? "V2/V3" : "V1");
218         printk(KERN_INFO IPWIRELESS_PCCARD_NAME
219                         ": I/O ports 0x%04x-0x%04x, irq %d\n",
220                         (unsigned int) link->io.BasePort1,
221                         (unsigned int) (link->io.BasePort1 +
222                                 link->io.NumPorts1 - 1),
223                         (unsigned int) link->irq.AssignedIRQ);
224         if (ipw->attr_memory && ipw->common_memory)
225                 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
226                         ": attr memory 0x%08lx-0x%08lx, common memory 0x%08lx-0x%08lx\n",
227                         ipw->request_attr_memory.Base,
228                         ipw->request_attr_memory.Base
229                         + ipw->request_attr_memory.Size - 1,
230                         ipw->request_common_memory.Base,
231                         ipw->request_common_memory.Base
232                         + ipw->request_common_memory.Size - 1);
233
234         ipw->network = ipwireless_network_create(ipw->hardware);
235         if (!ipw->network)
236                 goto exit;
237
238         ipw->tty = ipwireless_tty_create(ipw->hardware, ipw->network,
239                         ipw->nodes);
240         if (!ipw->tty)
241                 goto exit;
242
243         ipwireless_init_hardware_v2_v3(ipw->hardware);
244
245         /*
246          * Do the RequestConfiguration last, because it enables interrupts.
247          * Then we don't get any interrupts before we're ready for them.
248          */
249         ret = pcmcia_request_configuration(link, &link->conf);
250
251         if (ret != 0)
252                 goto exit;
253
254         link->dev_node = &ipw->nodes[0];
255
256         return 0;
257
258 exit:
259         if (ipw->attr_memory) {
260                 release_mem_region(ipw->request_attr_memory.Base,
261                                 ipw->request_attr_memory.Size);
262                 iounmap(ipw->attr_memory);
263                 pcmcia_release_window(link, ipw->handle_attr_memory);
264         }
265         if (ipw->common_memory) {
266                 release_mem_region(ipw->request_common_memory.Base,
267                                 ipw->request_common_memory.Size);
268                 iounmap(ipw->common_memory);
269                 pcmcia_release_window(link, ipw->handle_common_memory);
270         }
271         pcmcia_disable_device(link);
272         return -1;
273 }
274
275 static void release_ipwireless(struct ipw_dev *ipw)
276 {
277         pcmcia_disable_device(ipw->link);
278
279         if (ipw->common_memory) {
280                 release_mem_region(ipw->request_common_memory.Base,
281                                 ipw->request_common_memory.Size);
282                 iounmap(ipw->common_memory);
283         }
284         if (ipw->attr_memory) {
285                 release_mem_region(ipw->request_attr_memory.Base,
286                                 ipw->request_attr_memory.Size);
287                 iounmap(ipw->attr_memory);
288         }
289         if (ipw->common_memory)
290                 pcmcia_release_window(ipw->link, ipw->handle_common_memory);
291         if (ipw->attr_memory)
292                 pcmcia_release_window(ipw->link, ipw->handle_attr_memory);
293
294         /* Break the link with Card Services */
295         pcmcia_disable_device(ipw->link);
296 }
297
298 /*
299  * ipwireless_attach() creates an "instance" of the driver, allocating
300  * local data structures for one device (one interface).  The device
301  * is registered with Card Services.
302  *
303  * The pcmcia_device structure is initialized, but we don't actually
304  * configure the card at this point -- we wait until we receive a
305  * card insertion event.
306  */
307 static int ipwireless_attach(struct pcmcia_device *link)
308 {
309         struct ipw_dev *ipw;
310         int ret;
311
312         ipw = kzalloc(sizeof(struct ipw_dev), GFP_KERNEL);
313         if (!ipw)
314                 return -ENOMEM;
315
316         ipw->link = link;
317         link->priv = ipw;
318         link->irq.Instance = ipw;
319
320         /* Link this device into our device list. */
321         link->dev_node = &ipw->nodes[0];
322
323         ipw->hardware = ipwireless_hardware_create();
324         if (!ipw->hardware) {
325                 kfree(ipw);
326                 return -ENOMEM;
327         }
328         /* RegisterClient will call config_ipwireless */
329
330         ret = config_ipwireless(ipw);
331
332         if (ret != 0) {
333                 ipwireless_detach(link);
334                 return ret;
335         }
336
337         return 0;
338 }
339
340 /*
341  * This deletes a driver "instance".  The device is de-registered with
342  * Card Services.  If it has been released, all local data structures
343  * are freed.  Otherwise, the structures will be freed when the device
344  * is released.
345  */
346 static void ipwireless_detach(struct pcmcia_device *link)
347 {
348         struct ipw_dev *ipw = link->priv;
349
350         release_ipwireless(ipw);
351
352         if (ipw->tty != NULL)
353                 ipwireless_tty_free(ipw->tty);
354         if (ipw->network != NULL)
355                 ipwireless_network_free(ipw->network);
356         if (ipw->hardware != NULL)
357                 ipwireless_hardware_free(ipw->hardware);
358         kfree(ipw);
359 }
360
361 static struct pcmcia_driver me = {
362         .owner          = THIS_MODULE,
363         .probe          = ipwireless_attach,
364         .remove         = ipwireless_detach,
365         .drv = { .name  = IPWIRELESS_PCCARD_NAME },
366         .id_table       = ipw_ids
367 };
368
369 /*
370  * Module insertion : initialisation of the module.
371  * Register the card with cardmgr...
372  */
373 static int __init init_ipwireless(void)
374 {
375         int ret;
376
377         printk(KERN_INFO IPWIRELESS_PCCARD_NAME " "
378                IPWIRELESS_PCMCIA_VERSION " by " IPWIRELESS_PCMCIA_AUTHOR "\n");
379
380         ret = ipwireless_tty_init();
381         if (ret != 0)
382                 return ret;
383
384         ret = pcmcia_register_driver(&me);
385         if (ret != 0)
386                 ipwireless_tty_release();
387
388         return ret;
389 }
390
391 /*
392  * Module removal
393  */
394 static void __exit exit_ipwireless(void)
395 {
396         printk(KERN_INFO IPWIRELESS_PCCARD_NAME " "
397                         IPWIRELESS_PCMCIA_VERSION " removed\n");
398
399         pcmcia_unregister_driver(&me);
400         ipwireless_tty_release();
401 }
402
403 module_init(init_ipwireless);
404 module_exit(exit_ipwireless);
405
406 MODULE_AUTHOR(IPWIRELESS_PCMCIA_AUTHOR);
407 MODULE_DESCRIPTION(IPWIRELESS_PCCARD_NAME " " IPWIRELESS_PCMCIA_VERSION);
408 MODULE_LICENSE("GPL");