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Commit | Line | Data |
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1a8d4663 DB |
1 | /* |
2 | * PCMCIA 16-bit resource management functions | |
3 | * | |
4 | * The initial developer of the original code is David A. Hinds | |
5 | * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds | |
6 | * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. | |
7 | * | |
8 | * Copyright (C) 1999 David A. Hinds | |
9 | * Copyright (C) 2004-2005 Dominik Brodowski | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
14 | * | |
15 | */ | |
16 | ||
1a8d4663 DB |
17 | #include <linux/module.h> |
18 | #include <linux/kernel.h> | |
19 | #include <linux/interrupt.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/pci.h> | |
22 | #include <linux/device.h> | |
91284224 | 23 | #include <linux/netdevice.h> |
1a8d4663 | 24 | |
1a8d4663 DB |
25 | #include <pcmcia/cs_types.h> |
26 | #include <pcmcia/ss.h> | |
27 | #include <pcmcia/cs.h> | |
1a8d4663 DB |
28 | #include <pcmcia/cistpl.h> |
29 | #include <pcmcia/cisreg.h> | |
30 | #include <pcmcia/ds.h> | |
31 | ||
32 | #include "cs_internal.h" | |
1a8d4663 DB |
33 | |
34 | ||
1a8d4663 DB |
35 | /* Access speed for IO windows */ |
36 | static int io_speed = 0; | |
37 | module_param(io_speed, int, 0444); | |
38 | ||
39 | ||
40 | #ifdef CONFIG_PCMCIA_PROBE | |
531e5ca6 | 41 | #include <asm/irq.h> |
1a8d4663 DB |
42 | /* mask of IRQs already reserved by other cards, we should avoid using them */ |
43 | static u8 pcmcia_used_irq[NR_IRQS]; | |
44 | #endif | |
45 | ||
46 | ||
1a8d4663 DB |
47 | /** alloc_io_space |
48 | * | |
49 | * Special stuff for managing IO windows, because they are scarce | |
50 | */ | |
51 | ||
ecb8a847 OJ |
52 | static int alloc_io_space(struct pcmcia_socket *s, u_int attr, |
53 | unsigned int *base, unsigned int num, u_int lines) | |
1a8d4663 DB |
54 | { |
55 | int i; | |
ecb8a847 | 56 | unsigned int try, align; |
1a8d4663 DB |
57 | |
58 | align = (*base) ? (lines ? 1<<lines : 0) : 1; | |
59 | if (align && (align < num)) { | |
60 | if (*base) { | |
d50dbec3 | 61 | dev_dbg(&s->dev, "odd IO request: num %#x align %#x\n", |
1a8d4663 DB |
62 | num, align); |
63 | align = 0; | |
64 | } else | |
65 | while (align && (align < num)) align <<= 1; | |
66 | } | |
67 | if (*base & ~(align-1)) { | |
d50dbec3 | 68 | dev_dbg(&s->dev, "odd IO request: base %#x align %#x\n", |
1a8d4663 DB |
69 | *base, align); |
70 | align = 0; | |
71 | } | |
72 | if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) { | |
73 | *base = s->io_offset | (*base & 0x0fff); | |
74 | return 0; | |
75 | } | |
76 | /* Check for an already-allocated window that must conflict with | |
77 | * what was asked for. It is a hack because it does not catch all | |
78 | * potential conflicts, just the most obvious ones. | |
79 | */ | |
80 | for (i = 0; i < MAX_IO_WIN; i++) | |
4708b5fa | 81 | if ((s->io[i].res) && *base && |
c7d00693 | 82 | ((s->io[i].res->start & (align-1)) == *base)) |
1a8d4663 DB |
83 | return 1; |
84 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 85 | if (!s->io[i].res) { |
1a8d4663 DB |
86 | s->io[i].res = pcmcia_find_io_region(*base, num, align, s); |
87 | if (s->io[i].res) { | |
c7d00693 DB |
88 | *base = s->io[i].res->start; |
89 | s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS); | |
90 | s->io[i].InUse = num; | |
1a8d4663 DB |
91 | break; |
92 | } else | |
93 | return 1; | |
c7d00693 | 94 | } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS)) |
1a8d4663 DB |
95 | continue; |
96 | /* Try to extend top of window */ | |
c7d00693 | 97 | try = s->io[i].res->end + 1; |
1a8d4663 DB |
98 | if ((*base == 0) || (*base == try)) |
99 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start, | |
100 | s->io[i].res->end + num, s) == 0) { | |
101 | *base = try; | |
1a8d4663 DB |
102 | s->io[i].InUse += num; |
103 | break; | |
104 | } | |
105 | /* Try to extend bottom of window */ | |
c7d00693 | 106 | try = s->io[i].res->start - num; |
1a8d4663 DB |
107 | if ((*base == 0) || (*base == try)) |
108 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num, | |
109 | s->io[i].res->end, s) == 0) { | |
c7d00693 | 110 | *base = try; |
1a8d4663 DB |
111 | s->io[i].InUse += num; |
112 | break; | |
113 | } | |
114 | } | |
115 | return (i == MAX_IO_WIN); | |
116 | } /* alloc_io_space */ | |
117 | ||
118 | ||
ecb8a847 OJ |
119 | static void release_io_space(struct pcmcia_socket *s, unsigned int base, |
120 | unsigned int num) | |
1a8d4663 DB |
121 | { |
122 | int i; | |
123 | ||
124 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 DB |
125 | if (!s->io[i].res) |
126 | continue; | |
127 | if ((s->io[i].res->start <= base) && | |
128 | (s->io[i].res->end >= base+num-1)) { | |
1a8d4663 DB |
129 | s->io[i].InUse -= num; |
130 | /* Free the window if no one else is using it */ | |
131 | if (s->io[i].InUse == 0) { | |
1a8d4663 DB |
132 | release_resource(s->io[i].res); |
133 | kfree(s->io[i].res); | |
134 | s->io[i].res = NULL; | |
135 | } | |
136 | } | |
137 | } | |
138 | } /* release_io_space */ | |
139 | ||
140 | ||
141 | /** pccard_access_configuration_register | |
142 | * | |
143 | * Access_configuration_register() reads and writes configuration | |
144 | * registers in attribute memory. Memory window 0 is reserved for | |
145 | * this and the tuple reading services. | |
146 | */ | |
147 | ||
855cdf13 | 148 | int pcmcia_access_configuration_register(struct pcmcia_device *p_dev, |
1a8d4663 DB |
149 | conf_reg_t *reg) |
150 | { | |
855cdf13 | 151 | struct pcmcia_socket *s; |
1a8d4663 DB |
152 | config_t *c; |
153 | int addr; | |
154 | u_char val; | |
155 | ||
855cdf13 | 156 | if (!p_dev || !p_dev->function_config) |
3939c1ef | 157 | return -EINVAL; |
1a8d4663 | 158 | |
855cdf13 DB |
159 | s = p_dev->socket; |
160 | c = p_dev->function_config; | |
1a8d4663 | 161 | |
6d9a299f DB |
162 | if (!(c->state & CONFIG_LOCKED)) { |
163 | dev_dbg(&s->dev, "Configuration isnt't locked\n"); | |
943f70f1 | 164 | return -EACCES; |
6d9a299f | 165 | } |
1a8d4663 DB |
166 | |
167 | addr = (c->ConfigBase + reg->Offset) >> 1; | |
168 | ||
169 | switch (reg->Action) { | |
170 | case CS_READ: | |
171 | pcmcia_read_cis_mem(s, 1, addr, 1, &val); | |
172 | reg->Value = val; | |
173 | break; | |
174 | case CS_WRITE: | |
175 | val = reg->Value; | |
176 | pcmcia_write_cis_mem(s, 1, addr, 1, &val); | |
177 | break; | |
178 | default: | |
6d9a299f | 179 | dev_dbg(&s->dev, "Invalid conf register request\n"); |
926c5402 | 180 | return -EINVAL; |
1a8d4663 DB |
181 | break; |
182 | } | |
4c89e88b | 183 | return 0; |
855cdf13 | 184 | } /* pcmcia_access_configuration_register */ |
3448139b DB |
185 | EXPORT_SYMBOL(pcmcia_access_configuration_register); |
186 | ||
1a8d4663 | 187 | |
868575d1 MD |
188 | int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh, |
189 | memreq_t *req) | |
1a8d4663 | 190 | { |
0bdf9b3d | 191 | struct pcmcia_socket *s = p_dev->socket; |
868575d1 | 192 | |
0bdf9b3d MD |
193 | wh--; |
194 | if (wh >= MAX_WIN) | |
ffb8da20 | 195 | return -EINVAL; |
610e2374 | 196 | if (req->Page != 0) { |
d50dbec3 | 197 | dev_dbg(&s->dev, "failure: requested page is zero\n"); |
610e2374 DB |
198 | return -EINVAL; |
199 | } | |
82f88e36 DB |
200 | s->win[wh].card_start = req->CardOffset; |
201 | if (s->ops->set_mem_map(s, &s->win[wh]) != 0) { | |
d50dbec3 | 202 | dev_dbg(&s->dev, "failed to set_mem_map\n"); |
69ba4433 DB |
203 | return -EIO; |
204 | } | |
4c89e88b | 205 | return 0; |
1a8d4663 DB |
206 | } /* pcmcia_map_mem_page */ |
207 | EXPORT_SYMBOL(pcmcia_map_mem_page); | |
208 | ||
209 | ||
210 | /** pcmcia_modify_configuration | |
211 | * | |
212 | * Modify a locked socket configuration | |
213 | */ | |
2bc5a9bd | 214 | int pcmcia_modify_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
215 | modconf_t *mod) |
216 | { | |
217 | struct pcmcia_socket *s; | |
218 | config_t *c; | |
219 | ||
2bc5a9bd | 220 | s = p_dev->socket; |
dbb22f0d DB |
221 | c = p_dev->function_config; |
222 | ||
6d9a299f DB |
223 | if (!(s->state & SOCKET_PRESENT)) { |
224 | dev_dbg(&s->dev, "No card present\n"); | |
3939c1ef | 225 | return -ENODEV; |
6d9a299f DB |
226 | } |
227 | if (!(c->state & CONFIG_LOCKED)) { | |
228 | dev_dbg(&s->dev, "Configuration isnt't locked\n"); | |
943f70f1 | 229 | return -EACCES; |
6d9a299f | 230 | } |
1a8d4663 DB |
231 | |
232 | if (mod->Attributes & CONF_IRQ_CHANGE_VALID) { | |
233 | if (mod->Attributes & CONF_ENABLE_IRQ) { | |
234 | c->Attributes |= CONF_ENABLE_IRQ; | |
235 | s->socket.io_irq = s->irq.AssignedIRQ; | |
236 | } else { | |
237 | c->Attributes &= ~CONF_ENABLE_IRQ; | |
238 | s->socket.io_irq = 0; | |
239 | } | |
240 | s->ops->set_socket(s, &s->socket); | |
241 | } | |
242 | ||
d8b0a49d | 243 | if (mod->Attributes & CONF_VCC_CHANGE_VALID) { |
d50dbec3 | 244 | dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n"); |
d8b0a49d DB |
245 | return -EINVAL; |
246 | } | |
1a8d4663 DB |
247 | |
248 | /* We only allow changing Vpp1 and Vpp2 to the same value */ | |
249 | if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) && | |
250 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { | |
60df3de8 | 251 | if (mod->Vpp1 != mod->Vpp2) { |
d50dbec3 | 252 | dev_dbg(&s->dev, "Vpp1 and Vpp2 must be the same\n"); |
d8b0a49d | 253 | return -EINVAL; |
60df3de8 | 254 | } |
71ed90d8 | 255 | s->socket.Vpp = mod->Vpp1; |
d8b0a49d DB |
256 | if (s->ops->set_socket(s, &s->socket)) { |
257 | dev_printk(KERN_WARNING, &s->dev, | |
258 | "Unable to set VPP\n"); | |
259 | return -EIO; | |
260 | } | |
1a8d4663 | 261 | } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || |
d8b0a49d | 262 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { |
d50dbec3 | 263 | dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n"); |
d8b0a49d DB |
264 | return -EINVAL; |
265 | } | |
1a8d4663 | 266 | |
4bbed523 DB |
267 | if (mod->Attributes & CONF_IO_CHANGE_WIDTH) { |
268 | pccard_io_map io_off = { 0, 0, 0, 0, 1 }; | |
269 | pccard_io_map io_on; | |
270 | int i; | |
271 | ||
272 | io_on.speed = io_speed; | |
273 | for (i = 0; i < MAX_IO_WIN; i++) { | |
274 | if (!s->io[i].res) | |
275 | continue; | |
276 | io_off.map = i; | |
277 | io_on.map = i; | |
278 | ||
279 | io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; | |
280 | io_on.start = s->io[i].res->start; | |
281 | io_on.stop = s->io[i].res->end; | |
282 | ||
283 | s->ops->set_io_map(s, &io_off); | |
284 | mdelay(40); | |
285 | s->ops->set_io_map(s, &io_on); | |
286 | } | |
287 | } | |
288 | ||
4c89e88b | 289 | return 0; |
1a8d4663 DB |
290 | } /* modify_configuration */ |
291 | EXPORT_SYMBOL(pcmcia_modify_configuration); | |
292 | ||
293 | ||
2bc5a9bd | 294 | int pcmcia_release_configuration(struct pcmcia_device *p_dev) |
1a8d4663 DB |
295 | { |
296 | pccard_io_map io = { 0, 0, 0, 0, 1 }; | |
2bc5a9bd | 297 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc | 298 | config_t *c = p_dev->function_config; |
1a8d4663 DB |
299 | int i; |
300 | ||
e2d40963 DB |
301 | if (p_dev->_locked) { |
302 | p_dev->_locked = 0; | |
1a8d4663 DB |
303 | if (--(s->lock_count) == 0) { |
304 | s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ | |
305 | s->socket.Vpp = 0; | |
306 | s->socket.io_irq = 0; | |
307 | s->ops->set_socket(s, &s->socket); | |
308 | } | |
5f2a71fc DB |
309 | } |
310 | if (c->state & CONFIG_LOCKED) { | |
311 | c->state &= ~CONFIG_LOCKED; | |
1a8d4663 DB |
312 | if (c->state & CONFIG_IO_REQ) |
313 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 314 | if (!s->io[i].res) |
1a8d4663 DB |
315 | continue; |
316 | s->io[i].Config--; | |
317 | if (s->io[i].Config != 0) | |
318 | continue; | |
319 | io.map = i; | |
320 | s->ops->set_io_map(s, &io); | |
321 | } | |
1a8d4663 DB |
322 | } |
323 | ||
4c89e88b | 324 | return 0; |
1a8d4663 | 325 | } /* pcmcia_release_configuration */ |
1a8d4663 DB |
326 | |
327 | ||
328 | /** pcmcia_release_io | |
329 | * | |
330 | * Release_io() releases the I/O ranges allocated by a client. This | |
331 | * may be invoked some time after a card ejection has already dumped | |
332 | * the actual socket configuration, so if the client is "stale", we | |
333 | * don't bother checking the port ranges against the current socket | |
334 | * values. | |
335 | */ | |
b4c88400 | 336 | static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 337 | { |
2bc5a9bd | 338 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc | 339 | config_t *c = p_dev->function_config; |
1a8d4663 | 340 | |
e2d40963 | 341 | if (!p_dev->_io ) |
ffb8da20 | 342 | return -EINVAL; |
5f2a71fc | 343 | |
e2d40963 | 344 | p_dev->_io = 0; |
1a8d4663 | 345 | |
5f2a71fc DB |
346 | if ((c->io.BasePort1 != req->BasePort1) || |
347 | (c->io.NumPorts1 != req->NumPorts1) || | |
348 | (c->io.BasePort2 != req->BasePort2) || | |
349 | (c->io.NumPorts2 != req->NumPorts2)) | |
926c5402 | 350 | return -EINVAL; |
5f2a71fc DB |
351 | |
352 | c->state &= ~CONFIG_IO_REQ; | |
1a8d4663 DB |
353 | |
354 | release_io_space(s, req->BasePort1, req->NumPorts1); | |
355 | if (req->NumPorts2) | |
356 | release_io_space(s, req->BasePort2, req->NumPorts2); | |
357 | ||
4c89e88b | 358 | return 0; |
1a8d4663 | 359 | } /* pcmcia_release_io */ |
1a8d4663 DB |
360 | |
361 | ||
b4c88400 | 362 | static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 363 | { |
2bc5a9bd | 364 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc DB |
365 | config_t *c= p_dev->function_config; |
366 | ||
e2d40963 | 367 | if (!p_dev->_irq) |
ffb8da20 | 368 | return -EINVAL; |
e2d40963 | 369 | p_dev->_irq = 0; |
1a8d4663 | 370 | |
5f2a71fc | 371 | if (c->state & CONFIG_LOCKED) |
943f70f1 | 372 | return -EACCES; |
610e2374 | 373 | if (c->irq.Attributes != req->Attributes) { |
d50dbec3 | 374 | dev_dbg(&s->dev, "IRQ attributes must match assigned ones\n"); |
610e2374 DB |
375 | return -EINVAL; |
376 | } | |
69ba4433 | 377 | if (s->irq.AssignedIRQ != req->AssignedIRQ) { |
d50dbec3 | 378 | dev_dbg(&s->dev, "IRQ must match assigned one\n"); |
69ba4433 DB |
379 | return -EINVAL; |
380 | } | |
5f2a71fc DB |
381 | if (--s->irq.Config == 0) { |
382 | c->state &= ~CONFIG_IRQ_REQ; | |
383 | s->irq.AssignedIRQ = 0; | |
1a8d4663 DB |
384 | } |
385 | ||
386 | if (req->Attributes & IRQ_HANDLE_PRESENT) { | |
387 | free_irq(req->AssignedIRQ, req->Instance); | |
388 | } | |
389 | ||
390 | #ifdef CONFIG_PCMCIA_PROBE | |
391 | pcmcia_used_irq[req->AssignedIRQ]--; | |
392 | #endif | |
393 | ||
4c89e88b | 394 | return 0; |
1a8d4663 | 395 | } /* pcmcia_release_irq */ |
1a8d4663 DB |
396 | |
397 | ||
f5560da5 | 398 | int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh) |
1a8d4663 | 399 | { |
0bdf9b3d | 400 | struct pcmcia_socket *s = p_dev->socket; |
82f88e36 | 401 | pccard_mem_map *win; |
1a8d4663 | 402 | |
0bdf9b3d MD |
403 | wh--; |
404 | if (wh >= MAX_WIN) | |
ffb8da20 | 405 | return -EINVAL; |
0bdf9b3d MD |
406 | |
407 | win = &s->win[wh]; | |
408 | ||
409 | if (!(p_dev->_win & CLIENT_WIN_REQ(wh))) { | |
6d9a299f | 410 | dev_dbg(&s->dev, "not releasing unknown window\n"); |
ffb8da20 | 411 | return -EINVAL; |
6d9a299f | 412 | } |
1a8d4663 DB |
413 | |
414 | /* Shut down memory window */ | |
82f88e36 DB |
415 | win->flags &= ~MAP_ACTIVE; |
416 | s->ops->set_mem_map(s, win); | |
0bdf9b3d | 417 | s->state &= ~SOCKET_WIN_REQ(wh); |
1a8d4663 DB |
418 | |
419 | /* Release system memory */ | |
82f88e36 DB |
420 | if (win->res) { |
421 | release_resource(win->res); | |
422 | kfree(win->res); | |
423 | win->res = NULL; | |
1a8d4663 | 424 | } |
0bdf9b3d | 425 | p_dev->_win &= ~CLIENT_WIN_REQ(wh); |
1a8d4663 | 426 | |
4c89e88b | 427 | return 0; |
1a8d4663 DB |
428 | } /* pcmcia_release_window */ |
429 | EXPORT_SYMBOL(pcmcia_release_window); | |
430 | ||
431 | ||
2bc5a9bd | 432 | int pcmcia_request_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
433 | config_req_t *req) |
434 | { | |
435 | int i; | |
436 | u_int base; | |
2bc5a9bd | 437 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
438 | config_t *c; |
439 | pccard_io_map iomap; | |
440 | ||
1a8d4663 | 441 | if (!(s->state & SOCKET_PRESENT)) |
d598de02 | 442 | return -ENODEV; |
1a8d4663 | 443 | |
de6405e9 | 444 | if (req->IntType & INT_CARDBUS) { |
d50dbec3 | 445 | dev_dbg(&s->dev, "IntType may not be INT_CARDBUS\n"); |
de6405e9 DB |
446 | return -EINVAL; |
447 | } | |
dbb22f0d | 448 | c = p_dev->function_config; |
6d9a299f DB |
449 | if (c->state & CONFIG_LOCKED) { |
450 | dev_dbg(&s->dev, "Configuration is locked\n"); | |
943f70f1 | 451 | return -EACCES; |
6d9a299f | 452 | } |
1a8d4663 DB |
453 | |
454 | /* Do power control. We don't allow changes in Vcc. */ | |
70294b46 | 455 | s->socket.Vpp = req->Vpp; |
d8b0a49d DB |
456 | if (s->ops->set_socket(s, &s->socket)) { |
457 | dev_printk(KERN_WARNING, &s->dev, | |
458 | "Unable to set socket state\n"); | |
459 | return -EINVAL; | |
460 | } | |
1a8d4663 | 461 | |
1a8d4663 DB |
462 | /* Pick memory or I/O card, DMA mode, interrupt */ |
463 | c->IntType = req->IntType; | |
464 | c->Attributes = req->Attributes; | |
465 | if (req->IntType & INT_MEMORY_AND_IO) | |
466 | s->socket.flags |= SS_IOCARD; | |
467 | if (req->IntType & INT_ZOOMED_VIDEO) | |
468 | s->socket.flags |= SS_ZVCARD | SS_IOCARD; | |
469 | if (req->Attributes & CONF_ENABLE_DMA) | |
470 | s->socket.flags |= SS_DMA_MODE; | |
471 | if (req->Attributes & CONF_ENABLE_SPKR) | |
472 | s->socket.flags |= SS_SPKR_ENA; | |
473 | if (req->Attributes & CONF_ENABLE_IRQ) | |
474 | s->socket.io_irq = s->irq.AssignedIRQ; | |
475 | else | |
476 | s->socket.io_irq = 0; | |
477 | s->ops->set_socket(s, &s->socket); | |
478 | s->lock_count++; | |
479 | ||
480 | /* Set up CIS configuration registers */ | |
481 | base = c->ConfigBase = req->ConfigBase; | |
1ae9c7d8 | 482 | c->CardValues = req->Present; |
1a8d4663 DB |
483 | if (req->Present & PRESENT_COPY) { |
484 | c->Copy = req->Copy; | |
485 | pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy); | |
486 | } | |
487 | if (req->Present & PRESENT_OPTION) { | |
488 | if (s->functions == 1) { | |
489 | c->Option = req->ConfigIndex & COR_CONFIG_MASK; | |
490 | } else { | |
491 | c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK; | |
492 | c->Option |= COR_FUNC_ENA|COR_IREQ_ENA; | |
493 | if (req->Present & PRESENT_IOBASE_0) | |
494 | c->Option |= COR_ADDR_DECODE; | |
495 | } | |
496 | if (c->state & CONFIG_IRQ_REQ) | |
497 | if (!(c->irq.Attributes & IRQ_FORCED_PULSE)) | |
498 | c->Option |= COR_LEVEL_REQ; | |
499 | pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option); | |
500 | mdelay(40); | |
501 | } | |
502 | if (req->Present & PRESENT_STATUS) { | |
503 | c->Status = req->Status; | |
504 | pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status); | |
505 | } | |
506 | if (req->Present & PRESENT_PIN_REPLACE) { | |
507 | c->Pin = req->Pin; | |
508 | pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin); | |
509 | } | |
510 | if (req->Present & PRESENT_EXT_STATUS) { | |
511 | c->ExtStatus = req->ExtStatus; | |
512 | pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus); | |
513 | } | |
514 | if (req->Present & PRESENT_IOBASE_0) { | |
515 | u_char b = c->io.BasePort1 & 0xff; | |
516 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); | |
517 | b = (c->io.BasePort1 >> 8) & 0xff; | |
518 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); | |
519 | } | |
520 | if (req->Present & PRESENT_IOSIZE) { | |
521 | u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1; | |
522 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); | |
523 | } | |
524 | ||
525 | /* Configure I/O windows */ | |
526 | if (c->state & CONFIG_IO_REQ) { | |
527 | iomap.speed = io_speed; | |
528 | for (i = 0; i < MAX_IO_WIN; i++) | |
c7d00693 | 529 | if (s->io[i].res) { |
1a8d4663 DB |
530 | iomap.map = i; |
531 | iomap.flags = MAP_ACTIVE; | |
c7d00693 | 532 | switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) { |
1a8d4663 DB |
533 | case IO_DATA_PATH_WIDTH_16: |
534 | iomap.flags |= MAP_16BIT; break; | |
535 | case IO_DATA_PATH_WIDTH_AUTO: | |
536 | iomap.flags |= MAP_AUTOSZ; break; | |
537 | default: | |
538 | break; | |
539 | } | |
c7d00693 DB |
540 | iomap.start = s->io[i].res->start; |
541 | iomap.stop = s->io[i].res->end; | |
1a8d4663 DB |
542 | s->ops->set_io_map(s, &iomap); |
543 | s->io[i].Config++; | |
544 | } | |
545 | } | |
546 | ||
547 | c->state |= CONFIG_LOCKED; | |
e2d40963 | 548 | p_dev->_locked = 1; |
4c89e88b | 549 | return 0; |
1a8d4663 DB |
550 | } /* pcmcia_request_configuration */ |
551 | EXPORT_SYMBOL(pcmcia_request_configuration); | |
552 | ||
553 | ||
554 | /** pcmcia_request_io | |
555 | * | |
556 | * Request_io() reserves ranges of port addresses for a socket. | |
557 | * I have not implemented range sharing or alias addressing. | |
558 | */ | |
2bc5a9bd | 559 | int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 560 | { |
2bc5a9bd | 561 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
562 | config_t *c; |
563 | ||
6d9a299f DB |
564 | if (!(s->state & SOCKET_PRESENT)) { |
565 | dev_dbg(&s->dev, "No card present\n"); | |
3939c1ef | 566 | return -ENODEV; |
6d9a299f | 567 | } |
1a8d4663 | 568 | |
1a8d4663 | 569 | if (!req) |
de6405e9 | 570 | return -EINVAL; |
dbb22f0d | 571 | c = p_dev->function_config; |
6d9a299f DB |
572 | if (c->state & CONFIG_LOCKED) { |
573 | dev_dbg(&s->dev, "Configuration is locked\n"); | |
943f70f1 | 574 | return -EACCES; |
6d9a299f | 575 | } |
f958095e | 576 | if (c->state & CONFIG_IO_REQ) { |
d50dbec3 | 577 | dev_dbg(&s->dev, "IO already configured\n"); |
f958095e DB |
578 | return -EBUSY; |
579 | } | |
610e2374 | 580 | if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) { |
d50dbec3 | 581 | dev_dbg(&s->dev, "bad attribute setting for IO region 1\n"); |
610e2374 DB |
582 | return -EINVAL; |
583 | } | |
1a8d4663 | 584 | if ((req->NumPorts2 > 0) && |
610e2374 | 585 | (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) { |
d50dbec3 | 586 | dev_dbg(&s->dev, "bad attribute setting for IO region 2\n"); |
610e2374 DB |
587 | return -EINVAL; |
588 | } | |
1a8d4663 | 589 | |
d50dbec3 | 590 | dev_dbg(&s->dev, "trying to allocate resource 1\n"); |
1a8d4663 | 591 | if (alloc_io_space(s, req->Attributes1, &req->BasePort1, |
f958095e | 592 | req->NumPorts1, req->IOAddrLines)) { |
d50dbec3 | 593 | dev_dbg(&s->dev, "allocation of resource 1 failed\n"); |
f958095e DB |
594 | return -EBUSY; |
595 | } | |
1a8d4663 DB |
596 | |
597 | if (req->NumPorts2) { | |
d50dbec3 | 598 | dev_dbg(&s->dev, "trying to allocate resource 2\n"); |
1a8d4663 DB |
599 | if (alloc_io_space(s, req->Attributes2, &req->BasePort2, |
600 | req->NumPorts2, req->IOAddrLines)) { | |
d50dbec3 | 601 | dev_dbg(&s->dev, "allocation of resource 2 failed\n"); |
1a8d4663 | 602 | release_io_space(s, req->BasePort1, req->NumPorts1); |
f958095e | 603 | return -EBUSY; |
1a8d4663 DB |
604 | } |
605 | } | |
606 | ||
607 | c->io = *req; | |
608 | c->state |= CONFIG_IO_REQ; | |
e2d40963 | 609 | p_dev->_io = 1; |
4c89e88b | 610 | return 0; |
1a8d4663 DB |
611 | } /* pcmcia_request_io */ |
612 | EXPORT_SYMBOL(pcmcia_request_io); | |
613 | ||
614 | ||
615 | /** pcmcia_request_irq | |
616 | * | |
617 | * Request_irq() reserves an irq for this client. | |
618 | * | |
619 | * Also, since Linux only reserves irq's when they are actually | |
620 | * hooked, we don't guarantee that an irq will still be available | |
621 | * when the configuration is locked. Now that I think about it, | |
622 | * there might be a way to fix this using a dummy handler. | |
623 | */ | |
624 | ||
625 | #ifdef CONFIG_PCMCIA_PROBE | |
7d12e780 | 626 | static irqreturn_t test_action(int cpl, void *dev_id) |
1a8d4663 DB |
627 | { |
628 | return IRQ_NONE; | |
629 | } | |
630 | #endif | |
631 | ||
2bc5a9bd | 632 | int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 633 | { |
2bc5a9bd | 634 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 | 635 | config_t *c; |
f958095e | 636 | int ret = -EINVAL, irq = 0; |
c533120b | 637 | int type; |
1a8d4663 | 638 | |
6d9a299f DB |
639 | if (!(s->state & SOCKET_PRESENT)) { |
640 | dev_dbg(&s->dev, "No card present\n"); | |
3939c1ef | 641 | return -ENODEV; |
6d9a299f | 642 | } |
dbb22f0d | 643 | c = p_dev->function_config; |
6d9a299f DB |
644 | if (c->state & CONFIG_LOCKED) { |
645 | dev_dbg(&s->dev, "Configuration is locked\n"); | |
943f70f1 | 646 | return -EACCES; |
6d9a299f | 647 | } |
f958095e | 648 | if (c->state & CONFIG_IRQ_REQ) { |
d50dbec3 | 649 | dev_dbg(&s->dev, "IRQ already configured\n"); |
f958095e DB |
650 | return -EBUSY; |
651 | } | |
1a8d4663 | 652 | |
c533120b AC |
653 | /* Decide what type of interrupt we are registering */ |
654 | type = 0; | |
655 | if (s->functions > 1) /* All of this ought to be handled higher up */ | |
dace1453 | 656 | type = IRQF_SHARED; |
7bbfd39b | 657 | else if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) |
dace1453 | 658 | type = IRQF_SHARED; |
7bbfd39b | 659 | else printk(KERN_WARNING "pcmcia: Driver needs updating to support IRQ sharing.\n"); |
c533120b | 660 | |
1a8d4663 | 661 | #ifdef CONFIG_PCMCIA_PROBE |
635416ef AC |
662 | |
663 | #ifdef IRQ_NOAUTOEN | |
664 | /* if the underlying IRQ infrastructure allows for it, only allocate | |
665 | * the IRQ, but do not enable it | |
666 | */ | |
667 | if (!(req->Attributes & IRQ_HANDLE_PRESENT)) | |
668 | type |= IRQ_NOAUTOEN; | |
669 | #endif /* IRQ_NOAUTOEN */ | |
670 | ||
1a8d4663 DB |
671 | if (s->irq.AssignedIRQ != 0) { |
672 | /* If the interrupt is already assigned, it must be the same */ | |
673 | irq = s->irq.AssignedIRQ; | |
674 | } else { | |
675 | int try; | |
676 | u32 mask = s->irq_mask; | |
a1b274fb | 677 | void *data = &p_dev->dev.driver; /* something unique to this device */ |
1a8d4663 DB |
678 | |
679 | for (try = 0; try < 64; try++) { | |
680 | irq = try % 32; | |
681 | ||
682 | /* marked as available by driver, and not blocked by userspace? */ | |
683 | if (!((mask >> irq) & 1)) | |
684 | continue; | |
685 | ||
686 | /* avoid an IRQ which is already used by a PCMCIA card */ | |
687 | if ((try < 32) && pcmcia_used_irq[irq]) | |
688 | continue; | |
689 | ||
690 | /* register the correct driver, if possible, of check whether | |
691 | * registering a dummy handle works, i.e. if the IRQ isn't | |
692 | * marked as used by the kernel resource management core */ | |
693 | ret = request_irq(irq, | |
694 | (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action, | |
c533120b | 695 | type, |
bd65a685 | 696 | p_dev->devname, |
1a8d4663 DB |
697 | (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data); |
698 | if (!ret) { | |
699 | if (!(req->Attributes & IRQ_HANDLE_PRESENT)) | |
700 | free_irq(irq, data); | |
701 | break; | |
702 | } | |
703 | } | |
704 | } | |
705 | #endif | |
c181e0e0 DR |
706 | /* only assign PCI irq if no IRQ already assigned */ |
707 | if (ret && !s->irq.AssignedIRQ) { | |
6d9a299f DB |
708 | if (!s->pci_irq) { |
709 | dev_printk(KERN_INFO, &s->dev, "no IRQ found\n"); | |
1a8d4663 | 710 | return ret; |
6d9a299f | 711 | } |
dace1453 | 712 | type = IRQF_SHARED; |
1a8d4663 DB |
713 | irq = s->pci_irq; |
714 | } | |
715 | ||
c533120b | 716 | if (ret && (req->Attributes & IRQ_HANDLE_PRESENT)) { |
f958095e DB |
717 | ret = request_irq(irq, req->Handler, type, |
718 | p_dev->devname, req->Instance); | |
6d9a299f DB |
719 | if (ret) { |
720 | dev_printk(KERN_INFO, &s->dev, | |
721 | "request_irq() failed\n"); | |
f958095e | 722 | return ret; |
6d9a299f | 723 | } |
1a8d4663 DB |
724 | } |
725 | ||
c533120b | 726 | /* Make sure the fact the request type was overridden is passed back */ |
dace1453 | 727 | if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) { |
c533120b | 728 | req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING; |
ac449d6e DB |
729 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: " |
730 | "request for exclusive IRQ could not be fulfilled.\n"); | |
731 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver " | |
732 | "needs updating to supported shared IRQ lines.\n"); | |
c533120b | 733 | } |
1a8d4663 DB |
734 | c->irq.Attributes = req->Attributes; |
735 | s->irq.AssignedIRQ = req->AssignedIRQ = irq; | |
736 | s->irq.Config++; | |
737 | ||
738 | c->state |= CONFIG_IRQ_REQ; | |
e2d40963 | 739 | p_dev->_irq = 1; |
1a8d4663 DB |
740 | |
741 | #ifdef CONFIG_PCMCIA_PROBE | |
742 | pcmcia_used_irq[irq]++; | |
743 | #endif | |
744 | ||
4c89e88b | 745 | return 0; |
1a8d4663 DB |
746 | } /* pcmcia_request_irq */ |
747 | EXPORT_SYMBOL(pcmcia_request_irq); | |
748 | ||
749 | ||
750 | /** pcmcia_request_window | |
751 | * | |
752 | * Request_window() establishes a mapping between card memory space | |
753 | * and system memory space. | |
754 | */ | |
2bc5a9bd | 755 | int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh) |
1a8d4663 | 756 | { |
2bc5a9bd | 757 | struct pcmcia_socket *s = (*p_dev)->socket; |
82f88e36 | 758 | pccard_mem_map *win; |
1a8d4663 DB |
759 | u_long align; |
760 | int w; | |
761 | ||
6d9a299f DB |
762 | if (!(s->state & SOCKET_PRESENT)) { |
763 | dev_dbg(&s->dev, "No card present\n"); | |
3939c1ef | 764 | return -ENODEV; |
6d9a299f | 765 | } |
610e2374 | 766 | if (req->Attributes & (WIN_PAGED | WIN_SHARED)) { |
d50dbec3 | 767 | dev_dbg(&s->dev, "bad attribute setting for iomem region\n"); |
610e2374 DB |
768 | return -EINVAL; |
769 | } | |
1a8d4663 DB |
770 | |
771 | /* Window size defaults to smallest available */ | |
772 | if (req->Size == 0) | |
773 | req->Size = s->map_size; | |
774 | align = (((s->features & SS_CAP_MEM_ALIGN) || | |
775 | (req->Attributes & WIN_STRICT_ALIGN)) ? | |
776 | req->Size : s->map_size); | |
69ba4433 | 777 | if (req->Size & (s->map_size-1)) { |
d50dbec3 | 778 | dev_dbg(&s->dev, "invalid map size\n"); |
69ba4433 DB |
779 | return -EINVAL; |
780 | } | |
1a8d4663 | 781 | if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) || |
69ba4433 | 782 | (req->Base & (align-1))) { |
d50dbec3 | 783 | dev_dbg(&s->dev, "invalid base address\n"); |
69ba4433 DB |
784 | return -EINVAL; |
785 | } | |
1a8d4663 DB |
786 | if (req->Base) |
787 | align = 0; | |
788 | ||
789 | /* Allocate system memory window */ | |
790 | for (w = 0; w < MAX_WIN; w++) | |
791 | if (!(s->state & SOCKET_WIN_REQ(w))) break; | |
f958095e | 792 | if (w == MAX_WIN) { |
d50dbec3 | 793 | dev_dbg(&s->dev, "all windows are used already\n"); |
f958095e DB |
794 | return -EINVAL; |
795 | } | |
1a8d4663 DB |
796 | |
797 | win = &s->win[w]; | |
1a8d4663 DB |
798 | |
799 | if (!(s->features & SS_CAP_STATIC_MAP)) { | |
82f88e36 | 800 | win->res = pcmcia_find_mem_region(req->Base, req->Size, align, |
1a8d4663 | 801 | (req->Attributes & WIN_MAP_BELOW_1MB), s); |
82f88e36 | 802 | if (!win->res) { |
d50dbec3 | 803 | dev_dbg(&s->dev, "allocating mem region failed\n"); |
f958095e DB |
804 | return -EINVAL; |
805 | } | |
1a8d4663 | 806 | } |
e2d40963 | 807 | (*p_dev)->_win |= CLIENT_WIN_REQ(w); |
1a8d4663 DB |
808 | |
809 | /* Configure the socket controller */ | |
82f88e36 DB |
810 | win->map = w+1; |
811 | win->flags = 0; | |
812 | win->speed = req->AccessSpeed; | |
1a8d4663 | 813 | if (req->Attributes & WIN_MEMORY_TYPE) |
82f88e36 | 814 | win->flags |= MAP_ATTRIB; |
1a8d4663 | 815 | if (req->Attributes & WIN_ENABLE) |
82f88e36 | 816 | win->flags |= MAP_ACTIVE; |
1a8d4663 | 817 | if (req->Attributes & WIN_DATA_WIDTH_16) |
82f88e36 | 818 | win->flags |= MAP_16BIT; |
1a8d4663 | 819 | if (req->Attributes & WIN_USE_WAIT) |
82f88e36 DB |
820 | win->flags |= MAP_USE_WAIT; |
821 | win->card_start = 0; | |
822 | if (s->ops->set_mem_map(s, win) != 0) { | |
d50dbec3 | 823 | dev_dbg(&s->dev, "failed to set memory mapping\n"); |
926c5402 DB |
824 | return -EIO; |
825 | } | |
1a8d4663 DB |
826 | s->state |= SOCKET_WIN_REQ(w); |
827 | ||
828 | /* Return window handle */ | |
829 | if (s->features & SS_CAP_STATIC_MAP) { | |
82f88e36 | 830 | req->Base = win->static_start; |
1a8d4663 | 831 | } else { |
82f88e36 | 832 | req->Base = win->res->start; |
1a8d4663 | 833 | } |
0bdf9b3d | 834 | *wh = w + 1; |
1a8d4663 | 835 | |
4c89e88b | 836 | return 0; |
1a8d4663 DB |
837 | } /* pcmcia_request_window */ |
838 | EXPORT_SYMBOL(pcmcia_request_window); | |
5f2a71fc DB |
839 | |
840 | void pcmcia_disable_device(struct pcmcia_device *p_dev) { | |
5f2a71fc | 841 | pcmcia_release_configuration(p_dev); |
fd238232 DB |
842 | pcmcia_release_io(p_dev, &p_dev->io); |
843 | pcmcia_release_irq(p_dev, &p_dev->irq); | |
c1ac0228 | 844 | if (p_dev->win) |
f5560da5 | 845 | pcmcia_release_window(p_dev, p_dev->win); |
5f2a71fc DB |
846 | } |
847 | EXPORT_SYMBOL(pcmcia_disable_device); | |
a804b574 DB |
848 | |
849 | ||
850 | struct pcmcia_cfg_mem { | |
91284224 DB |
851 | struct pcmcia_device *p_dev; |
852 | void *priv_data; | |
853 | int (*conf_check) (struct pcmcia_device *p_dev, | |
854 | cistpl_cftable_entry_t *cfg, | |
855 | cistpl_cftable_entry_t *dflt, | |
856 | unsigned int vcc, | |
857 | void *priv_data); | |
a804b574 | 858 | cisparse_t parse; |
8e2fc39d | 859 | cistpl_cftable_entry_t dflt; |
a804b574 DB |
860 | }; |
861 | ||
91284224 DB |
862 | /** |
863 | * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config() | |
864 | * | |
865 | * pcmcia_do_loop_config() is the internal callback for the call from | |
866 | * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred | |
867 | * by a struct pcmcia_cfg_mem. | |
868 | */ | |
869 | static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv) | |
870 | { | |
871 | cistpl_cftable_entry_t *cfg = &parse->cftable_entry; | |
872 | struct pcmcia_cfg_mem *cfg_mem = priv; | |
873 | ||
874 | /* default values */ | |
875 | cfg_mem->p_dev->conf.ConfigIndex = cfg->index; | |
876 | if (cfg->flags & CISTPL_CFTABLE_DEFAULT) | |
877 | cfg_mem->dflt = *cfg; | |
878 | ||
879 | return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt, | |
880 | cfg_mem->p_dev->socket->socket.Vcc, | |
881 | cfg_mem->priv_data); | |
882 | } | |
883 | ||
a804b574 DB |
884 | /** |
885 | * pcmcia_loop_config() - loop over configuration options | |
886 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
887 | * @conf_check: function to call for each configuration option. | |
888 | * It gets passed the struct pcmcia_device, the CIS data | |
889 | * describing the configuration option, and private data | |
890 | * being passed to pcmcia_loop_config() | |
891 | * @priv_data: private data to be passed to the conf_check function. | |
892 | * | |
893 | * pcmcia_loop_config() loops over all configuration options, and calls | |
894 | * the driver-specific conf_check() for each one, checking whether | |
889c2774 | 895 | * it is a valid one. Returns 0 on success or errorcode otherwise. |
a804b574 DB |
896 | */ |
897 | int pcmcia_loop_config(struct pcmcia_device *p_dev, | |
898 | int (*conf_check) (struct pcmcia_device *p_dev, | |
899 | cistpl_cftable_entry_t *cfg, | |
8e2fc39d | 900 | cistpl_cftable_entry_t *dflt, |
ad913c11 | 901 | unsigned int vcc, |
a804b574 DB |
902 | void *priv_data), |
903 | void *priv_data) | |
904 | { | |
905 | struct pcmcia_cfg_mem *cfg_mem; | |
889c2774 | 906 | int ret; |
a804b574 DB |
907 | |
908 | cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL); | |
909 | if (cfg_mem == NULL) | |
910 | return -ENOMEM; | |
911 | ||
91284224 DB |
912 | cfg_mem->p_dev = p_dev; |
913 | cfg_mem->conf_check = conf_check; | |
914 | cfg_mem->priv_data = priv_data; | |
ad913c11 | 915 | |
91284224 DB |
916 | ret = pccard_loop_tuple(p_dev->socket, p_dev->func, |
917 | CISTPL_CFTABLE_ENTRY, &cfg_mem->parse, | |
918 | cfg_mem, pcmcia_do_loop_config); | |
a804b574 | 919 | |
91284224 DB |
920 | kfree(cfg_mem); |
921 | return ret; | |
922 | } | |
923 | EXPORT_SYMBOL(pcmcia_loop_config); | |
498ac189 | 924 | |
a804b574 | 925 | |
91284224 DB |
926 | struct pcmcia_loop_mem { |
927 | struct pcmcia_device *p_dev; | |
928 | void *priv_data; | |
929 | int (*loop_tuple) (struct pcmcia_device *p_dev, | |
930 | tuple_t *tuple, | |
931 | void *priv_data); | |
932 | }; | |
a804b574 | 933 | |
91284224 DB |
934 | /** |
935 | * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config() | |
936 | * | |
937 | * pcmcia_do_loop_tuple() is the internal callback for the call from | |
938 | * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred | |
939 | * by a struct pcmcia_cfg_mem. | |
940 | */ | |
941 | static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv) | |
942 | { | |
943 | struct pcmcia_loop_mem *loop = priv; | |
498ac189 | 944 | |
91284224 DB |
945 | return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data); |
946 | }; | |
947 | ||
948 | /** | |
949 | * pcmcia_loop_tuple() - loop over tuples in the CIS | |
950 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
951 | * @code: which CIS code shall we look for? | |
952 | * @priv_data: private data to be passed to the loop_tuple function. | |
953 | * @loop_tuple: function to call for each CIS entry of type @function. IT | |
954 | * gets passed the raw tuple and @priv_data. | |
955 | * | |
956 | * pcmcia_loop_tuple() loops over all CIS entries of type @function, and | |
957 | * calls the @loop_tuple function for each entry. If the call to @loop_tuple | |
958 | * returns 0, the loop exits. Returns 0 on success or errorcode otherwise. | |
959 | */ | |
960 | int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code, | |
961 | int (*loop_tuple) (struct pcmcia_device *p_dev, | |
962 | tuple_t *tuple, | |
963 | void *priv_data), | |
964 | void *priv_data) | |
965 | { | |
966 | struct pcmcia_loop_mem loop = { | |
967 | .p_dev = p_dev, | |
968 | .loop_tuple = loop_tuple, | |
969 | .priv_data = priv_data}; | |
970 | ||
971 | return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL, | |
972 | &loop, pcmcia_do_loop_tuple); | |
973 | }; | |
974 | EXPORT_SYMBOL(pcmcia_loop_tuple); | |
a804b574 | 975 | |
91284224 DB |
976 | |
977 | struct pcmcia_loop_get { | |
978 | size_t len; | |
979 | cisdata_t **buf; | |
980 | }; | |
981 | ||
982 | /** | |
983 | * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple() | |
984 | * | |
985 | * pcmcia_do_get_tuple() is the internal callback for the call from | |
986 | * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in | |
987 | * the first tuple, return 0 unconditionally. Create a memory buffer large | |
988 | * enough to hold the content of the tuple, and fill it with the tuple data. | |
989 | * The caller is responsible to free the buffer. | |
990 | */ | |
991 | static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple, | |
992 | void *priv) | |
993 | { | |
994 | struct pcmcia_loop_get *get = priv; | |
995 | ||
996 | *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL); | |
997 | if (*get->buf) { | |
998 | get->len = tuple->TupleDataLen; | |
999 | memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen); | |
6d9a299f DB |
1000 | } else |
1001 | dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n"); | |
91284224 DB |
1002 | return 0; |
1003 | }; | |
1004 | ||
1005 | /** | |
1006 | * pcmcia_get_tuple() - get first tuple from CIS | |
1007 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
1008 | * @code: which CIS code shall we look for? | |
1009 | * @buf: pointer to store the buffer to. | |
1010 | * | |
1011 | * pcmcia_get_tuple() gets the content of the first CIS entry of type @code. | |
1012 | * It returns the buffer length (or zero). The caller is responsible to free | |
1013 | * the buffer passed in @buf. | |
1014 | */ | |
1015 | size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code, | |
1016 | unsigned char **buf) | |
1017 | { | |
1018 | struct pcmcia_loop_get get = { | |
1019 | .len = 0, | |
1020 | .buf = buf, | |
1021 | }; | |
1022 | ||
1023 | *get.buf = NULL; | |
1024 | pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get); | |
1025 | ||
1026 | return get.len; | |
1027 | }; | |
1028 | EXPORT_SYMBOL(pcmcia_get_tuple); | |
1029 | ||
1030 | ||
1031 | /** | |
1032 | * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis() | |
1033 | * | |
1034 | * pcmcia_do_get_mac() is the internal callback for the call from | |
1035 | * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the | |
1036 | * tuple contains a proper LAN_NODE_ID of length 6, and copy the data | |
1037 | * to struct net_device->dev_addr[i]. | |
1038 | */ | |
1039 | static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple, | |
1040 | void *priv) | |
1041 | { | |
1042 | struct net_device *dev = priv; | |
1043 | int i; | |
1044 | ||
1045 | if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID) | |
1046 | return -EINVAL; | |
1047 | if (tuple->TupleDataLen < ETH_ALEN + 2) { | |
1048 | dev_warn(&p_dev->dev, "Invalid CIS tuple length for " | |
1049 | "LAN_NODE_ID\n"); | |
1050 | return -EINVAL; | |
1051 | } | |
1052 | ||
1053 | if (tuple->TupleData[1] != ETH_ALEN) { | |
1054 | dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n"); | |
1055 | return -EINVAL; | |
1056 | } | |
1057 | for (i = 0; i < 6; i++) | |
1058 | dev->dev_addr[i] = tuple->TupleData[i+2]; | |
1059 | return 0; | |
1060 | }; | |
1061 | ||
1062 | /** | |
1063 | * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE | |
1064 | * @p_dev: the struct pcmcia_device for which we want the address. | |
1065 | * @dev: a properly prepared struct net_device to store the info to. | |
1066 | * | |
1067 | * pcmcia_get_mac_from_cis() reads out the hardware MAC address from | |
1068 | * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which | |
1069 | * must be set up properly by the driver (see examples!). | |
1070 | */ | |
1071 | int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev) | |
1072 | { | |
1073 | return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev); | |
1074 | }; | |
1075 | EXPORT_SYMBOL(pcmcia_get_mac_from_cis); | |
a804b574 | 1076 |