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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 | 35 | /* Access speed for IO windows */ |
9fea84f4 | 36 | static int io_speed; |
1a8d4663 DB |
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 | ||
f9c316f4 DB |
46 | static int pcmcia_adjust_io_region(struct resource *res, unsigned long start, |
47 | unsigned long end, struct pcmcia_socket *s) | |
48 | { | |
49 | if (s->resource_ops->adjust_io_region) | |
50 | return s->resource_ops->adjust_io_region(res, start, end, s); | |
51 | return -ENOMEM; | |
52 | } | |
53 | ||
54 | static struct resource *pcmcia_find_io_region(unsigned long base, int num, | |
55 | unsigned long align, | |
56 | struct pcmcia_socket *s) | |
57 | { | |
58 | if (s->resource_ops->find_io) | |
59 | return s->resource_ops->find_io(base, num, align, s); | |
60 | return NULL; | |
61 | } | |
62 | ||
1a8d4663 | 63 | |
1a8d4663 DB |
64 | /** alloc_io_space |
65 | * | |
66 | * Special stuff for managing IO windows, because they are scarce | |
67 | */ | |
68 | ||
ecb8a847 OJ |
69 | static int alloc_io_space(struct pcmcia_socket *s, u_int attr, |
70 | unsigned int *base, unsigned int num, u_int lines) | |
1a8d4663 DB |
71 | { |
72 | int i; | |
ecb8a847 | 73 | unsigned int try, align; |
1a8d4663 DB |
74 | |
75 | align = (*base) ? (lines ? 1<<lines : 0) : 1; | |
76 | if (align && (align < num)) { | |
77 | if (*base) { | |
d50dbec3 | 78 | dev_dbg(&s->dev, "odd IO request: num %#x align %#x\n", |
1a8d4663 DB |
79 | num, align); |
80 | align = 0; | |
81 | } else | |
9fea84f4 DB |
82 | while (align && (align < num)) |
83 | align <<= 1; | |
1a8d4663 DB |
84 | } |
85 | if (*base & ~(align-1)) { | |
d50dbec3 | 86 | dev_dbg(&s->dev, "odd IO request: base %#x align %#x\n", |
1a8d4663 DB |
87 | *base, align); |
88 | align = 0; | |
89 | } | |
90 | if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) { | |
91 | *base = s->io_offset | (*base & 0x0fff); | |
92 | return 0; | |
93 | } | |
94 | /* Check for an already-allocated window that must conflict with | |
95 | * what was asked for. It is a hack because it does not catch all | |
96 | * potential conflicts, just the most obvious ones. | |
97 | */ | |
98 | for (i = 0; i < MAX_IO_WIN; i++) | |
4708b5fa | 99 | if ((s->io[i].res) && *base && |
c7d00693 | 100 | ((s->io[i].res->start & (align-1)) == *base)) |
1a8d4663 DB |
101 | return 1; |
102 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 103 | if (!s->io[i].res) { |
1a8d4663 DB |
104 | s->io[i].res = pcmcia_find_io_region(*base, num, align, s); |
105 | if (s->io[i].res) { | |
c7d00693 DB |
106 | *base = s->io[i].res->start; |
107 | s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS); | |
108 | s->io[i].InUse = num; | |
1a8d4663 DB |
109 | break; |
110 | } else | |
111 | return 1; | |
c7d00693 | 112 | } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS)) |
1a8d4663 DB |
113 | continue; |
114 | /* Try to extend top of window */ | |
c7d00693 | 115 | try = s->io[i].res->end + 1; |
1a8d4663 DB |
116 | if ((*base == 0) || (*base == try)) |
117 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start, | |
118 | s->io[i].res->end + num, s) == 0) { | |
119 | *base = try; | |
1a8d4663 DB |
120 | s->io[i].InUse += num; |
121 | break; | |
122 | } | |
123 | /* Try to extend bottom of window */ | |
c7d00693 | 124 | try = s->io[i].res->start - num; |
1a8d4663 DB |
125 | if ((*base == 0) || (*base == try)) |
126 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num, | |
127 | s->io[i].res->end, s) == 0) { | |
c7d00693 | 128 | *base = try; |
1a8d4663 DB |
129 | s->io[i].InUse += num; |
130 | break; | |
131 | } | |
132 | } | |
133 | return (i == MAX_IO_WIN); | |
134 | } /* alloc_io_space */ | |
135 | ||
136 | ||
ecb8a847 OJ |
137 | static void release_io_space(struct pcmcia_socket *s, unsigned int base, |
138 | unsigned int num) | |
1a8d4663 DB |
139 | { |
140 | int i; | |
141 | ||
142 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 DB |
143 | if (!s->io[i].res) |
144 | continue; | |
145 | if ((s->io[i].res->start <= base) && | |
146 | (s->io[i].res->end >= base+num-1)) { | |
1a8d4663 DB |
147 | s->io[i].InUse -= num; |
148 | /* Free the window if no one else is using it */ | |
149 | if (s->io[i].InUse == 0) { | |
1a8d4663 DB |
150 | release_resource(s->io[i].res); |
151 | kfree(s->io[i].res); | |
152 | s->io[i].res = NULL; | |
153 | } | |
154 | } | |
155 | } | |
156 | } /* release_io_space */ | |
157 | ||
158 | ||
159 | /** pccard_access_configuration_register | |
160 | * | |
161 | * Access_configuration_register() reads and writes configuration | |
162 | * registers in attribute memory. Memory window 0 is reserved for | |
163 | * this and the tuple reading services. | |
164 | */ | |
165 | ||
855cdf13 | 166 | int pcmcia_access_configuration_register(struct pcmcia_device *p_dev, |
1a8d4663 DB |
167 | conf_reg_t *reg) |
168 | { | |
855cdf13 | 169 | struct pcmcia_socket *s; |
1a8d4663 DB |
170 | config_t *c; |
171 | int addr; | |
172 | u_char val; | |
173 | ||
855cdf13 | 174 | if (!p_dev || !p_dev->function_config) |
3939c1ef | 175 | return -EINVAL; |
1a8d4663 | 176 | |
855cdf13 DB |
177 | s = p_dev->socket; |
178 | c = p_dev->function_config; | |
1a8d4663 | 179 | |
6d9a299f DB |
180 | if (!(c->state & CONFIG_LOCKED)) { |
181 | dev_dbg(&s->dev, "Configuration isnt't locked\n"); | |
943f70f1 | 182 | return -EACCES; |
6d9a299f | 183 | } |
1a8d4663 DB |
184 | |
185 | addr = (c->ConfigBase + reg->Offset) >> 1; | |
186 | ||
187 | switch (reg->Action) { | |
188 | case CS_READ: | |
189 | pcmcia_read_cis_mem(s, 1, addr, 1, &val); | |
190 | reg->Value = val; | |
191 | break; | |
192 | case CS_WRITE: | |
193 | val = reg->Value; | |
194 | pcmcia_write_cis_mem(s, 1, addr, 1, &val); | |
195 | break; | |
196 | default: | |
6d9a299f | 197 | dev_dbg(&s->dev, "Invalid conf register request\n"); |
926c5402 | 198 | return -EINVAL; |
1a8d4663 DB |
199 | break; |
200 | } | |
4c89e88b | 201 | return 0; |
855cdf13 | 202 | } /* pcmcia_access_configuration_register */ |
3448139b DB |
203 | EXPORT_SYMBOL(pcmcia_access_configuration_register); |
204 | ||
1a8d4663 | 205 | |
868575d1 MD |
206 | int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh, |
207 | memreq_t *req) | |
1a8d4663 | 208 | { |
0bdf9b3d | 209 | struct pcmcia_socket *s = p_dev->socket; |
868575d1 | 210 | |
0bdf9b3d MD |
211 | wh--; |
212 | if (wh >= MAX_WIN) | |
ffb8da20 | 213 | return -EINVAL; |
610e2374 | 214 | if (req->Page != 0) { |
d50dbec3 | 215 | dev_dbg(&s->dev, "failure: requested page is zero\n"); |
610e2374 DB |
216 | return -EINVAL; |
217 | } | |
82f88e36 DB |
218 | s->win[wh].card_start = req->CardOffset; |
219 | if (s->ops->set_mem_map(s, &s->win[wh]) != 0) { | |
d50dbec3 | 220 | dev_dbg(&s->dev, "failed to set_mem_map\n"); |
69ba4433 DB |
221 | return -EIO; |
222 | } | |
4c89e88b | 223 | return 0; |
1a8d4663 DB |
224 | } /* pcmcia_map_mem_page */ |
225 | EXPORT_SYMBOL(pcmcia_map_mem_page); | |
226 | ||
227 | ||
228 | /** pcmcia_modify_configuration | |
229 | * | |
230 | * Modify a locked socket configuration | |
231 | */ | |
2bc5a9bd | 232 | int pcmcia_modify_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
233 | modconf_t *mod) |
234 | { | |
235 | struct pcmcia_socket *s; | |
236 | config_t *c; | |
237 | ||
2bc5a9bd | 238 | s = p_dev->socket; |
dbb22f0d DB |
239 | c = p_dev->function_config; |
240 | ||
6d9a299f DB |
241 | if (!(s->state & SOCKET_PRESENT)) { |
242 | dev_dbg(&s->dev, "No card present\n"); | |
3939c1ef | 243 | return -ENODEV; |
6d9a299f DB |
244 | } |
245 | if (!(c->state & CONFIG_LOCKED)) { | |
246 | dev_dbg(&s->dev, "Configuration isnt't locked\n"); | |
943f70f1 | 247 | return -EACCES; |
6d9a299f | 248 | } |
1a8d4663 DB |
249 | |
250 | if (mod->Attributes & CONF_IRQ_CHANGE_VALID) { | |
251 | if (mod->Attributes & CONF_ENABLE_IRQ) { | |
252 | c->Attributes |= CONF_ENABLE_IRQ; | |
253 | s->socket.io_irq = s->irq.AssignedIRQ; | |
254 | } else { | |
255 | c->Attributes &= ~CONF_ENABLE_IRQ; | |
256 | s->socket.io_irq = 0; | |
257 | } | |
258 | s->ops->set_socket(s, &s->socket); | |
259 | } | |
260 | ||
d8b0a49d | 261 | if (mod->Attributes & CONF_VCC_CHANGE_VALID) { |
d50dbec3 | 262 | dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n"); |
d8b0a49d DB |
263 | return -EINVAL; |
264 | } | |
1a8d4663 DB |
265 | |
266 | /* We only allow changing Vpp1 and Vpp2 to the same value */ | |
267 | if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) && | |
268 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { | |
60df3de8 | 269 | if (mod->Vpp1 != mod->Vpp2) { |
d50dbec3 | 270 | dev_dbg(&s->dev, "Vpp1 and Vpp2 must be the same\n"); |
d8b0a49d | 271 | return -EINVAL; |
60df3de8 | 272 | } |
71ed90d8 | 273 | s->socket.Vpp = mod->Vpp1; |
d8b0a49d DB |
274 | if (s->ops->set_socket(s, &s->socket)) { |
275 | dev_printk(KERN_WARNING, &s->dev, | |
276 | "Unable to set VPP\n"); | |
277 | return -EIO; | |
278 | } | |
1a8d4663 | 279 | } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || |
d8b0a49d | 280 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { |
d50dbec3 | 281 | dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n"); |
d8b0a49d DB |
282 | return -EINVAL; |
283 | } | |
1a8d4663 | 284 | |
4bbed523 DB |
285 | if (mod->Attributes & CONF_IO_CHANGE_WIDTH) { |
286 | pccard_io_map io_off = { 0, 0, 0, 0, 1 }; | |
287 | pccard_io_map io_on; | |
288 | int i; | |
289 | ||
290 | io_on.speed = io_speed; | |
291 | for (i = 0; i < MAX_IO_WIN; i++) { | |
292 | if (!s->io[i].res) | |
293 | continue; | |
294 | io_off.map = i; | |
295 | io_on.map = i; | |
296 | ||
297 | io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; | |
298 | io_on.start = s->io[i].res->start; | |
299 | io_on.stop = s->io[i].res->end; | |
300 | ||
301 | s->ops->set_io_map(s, &io_off); | |
302 | mdelay(40); | |
303 | s->ops->set_io_map(s, &io_on); | |
304 | } | |
305 | } | |
306 | ||
4c89e88b | 307 | return 0; |
1a8d4663 DB |
308 | } /* modify_configuration */ |
309 | EXPORT_SYMBOL(pcmcia_modify_configuration); | |
310 | ||
311 | ||
2bc5a9bd | 312 | int pcmcia_release_configuration(struct pcmcia_device *p_dev) |
1a8d4663 DB |
313 | { |
314 | pccard_io_map io = { 0, 0, 0, 0, 1 }; | |
2bc5a9bd | 315 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc | 316 | config_t *c = p_dev->function_config; |
1a8d4663 DB |
317 | int i; |
318 | ||
e2d40963 DB |
319 | if (p_dev->_locked) { |
320 | p_dev->_locked = 0; | |
1a8d4663 DB |
321 | if (--(s->lock_count) == 0) { |
322 | s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ | |
323 | s->socket.Vpp = 0; | |
324 | s->socket.io_irq = 0; | |
325 | s->ops->set_socket(s, &s->socket); | |
326 | } | |
5f2a71fc DB |
327 | } |
328 | if (c->state & CONFIG_LOCKED) { | |
329 | c->state &= ~CONFIG_LOCKED; | |
1a8d4663 DB |
330 | if (c->state & CONFIG_IO_REQ) |
331 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 332 | if (!s->io[i].res) |
1a8d4663 DB |
333 | continue; |
334 | s->io[i].Config--; | |
335 | if (s->io[i].Config != 0) | |
336 | continue; | |
337 | io.map = i; | |
338 | s->ops->set_io_map(s, &io); | |
339 | } | |
1a8d4663 DB |
340 | } |
341 | ||
4c89e88b | 342 | return 0; |
1a8d4663 | 343 | } /* pcmcia_release_configuration */ |
1a8d4663 DB |
344 | |
345 | ||
346 | /** pcmcia_release_io | |
347 | * | |
348 | * Release_io() releases the I/O ranges allocated by a client. This | |
349 | * may be invoked some time after a card ejection has already dumped | |
350 | * the actual socket configuration, so if the client is "stale", we | |
351 | * don't bother checking the port ranges against the current socket | |
352 | * values. | |
353 | */ | |
b4c88400 | 354 | static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 355 | { |
2bc5a9bd | 356 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc | 357 | config_t *c = p_dev->function_config; |
1a8d4663 | 358 | |
9fea84f4 | 359 | if (!p_dev->_io) |
ffb8da20 | 360 | return -EINVAL; |
5f2a71fc | 361 | |
e2d40963 | 362 | p_dev->_io = 0; |
1a8d4663 | 363 | |
5f2a71fc DB |
364 | if ((c->io.BasePort1 != req->BasePort1) || |
365 | (c->io.NumPorts1 != req->NumPorts1) || | |
366 | (c->io.BasePort2 != req->BasePort2) || | |
367 | (c->io.NumPorts2 != req->NumPorts2)) | |
926c5402 | 368 | return -EINVAL; |
5f2a71fc DB |
369 | |
370 | c->state &= ~CONFIG_IO_REQ; | |
1a8d4663 DB |
371 | |
372 | release_io_space(s, req->BasePort1, req->NumPorts1); | |
373 | if (req->NumPorts2) | |
374 | release_io_space(s, req->BasePort2, req->NumPorts2); | |
375 | ||
4c89e88b | 376 | return 0; |
1a8d4663 | 377 | } /* pcmcia_release_io */ |
1a8d4663 DB |
378 | |
379 | ||
b4c88400 | 380 | static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 381 | { |
2bc5a9bd | 382 | struct pcmcia_socket *s = p_dev->socket; |
9fea84f4 | 383 | config_t *c = p_dev->function_config; |
5f2a71fc | 384 | |
e2d40963 | 385 | if (!p_dev->_irq) |
ffb8da20 | 386 | return -EINVAL; |
e2d40963 | 387 | p_dev->_irq = 0; |
1a8d4663 | 388 | |
5f2a71fc | 389 | if (c->state & CONFIG_LOCKED) |
943f70f1 | 390 | return -EACCES; |
610e2374 | 391 | if (c->irq.Attributes != req->Attributes) { |
d50dbec3 | 392 | dev_dbg(&s->dev, "IRQ attributes must match assigned ones\n"); |
610e2374 DB |
393 | return -EINVAL; |
394 | } | |
69ba4433 | 395 | if (s->irq.AssignedIRQ != req->AssignedIRQ) { |
d50dbec3 | 396 | dev_dbg(&s->dev, "IRQ must match assigned one\n"); |
69ba4433 DB |
397 | return -EINVAL; |
398 | } | |
5f2a71fc DB |
399 | if (--s->irq.Config == 0) { |
400 | c->state &= ~CONFIG_IRQ_REQ; | |
401 | s->irq.AssignedIRQ = 0; | |
1a8d4663 DB |
402 | } |
403 | ||
9fea84f4 | 404 | if (req->Handler) |
5fa9167a | 405 | free_irq(req->AssignedIRQ, p_dev->priv); |
1a8d4663 DB |
406 | |
407 | #ifdef CONFIG_PCMCIA_PROBE | |
408 | pcmcia_used_irq[req->AssignedIRQ]--; | |
409 | #endif | |
410 | ||
4c89e88b | 411 | return 0; |
1a8d4663 | 412 | } /* pcmcia_release_irq */ |
1a8d4663 DB |
413 | |
414 | ||
f5560da5 | 415 | int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh) |
1a8d4663 | 416 | { |
0bdf9b3d | 417 | struct pcmcia_socket *s = p_dev->socket; |
82f88e36 | 418 | pccard_mem_map *win; |
1a8d4663 | 419 | |
0bdf9b3d MD |
420 | wh--; |
421 | if (wh >= MAX_WIN) | |
ffb8da20 | 422 | return -EINVAL; |
0bdf9b3d MD |
423 | |
424 | win = &s->win[wh]; | |
425 | ||
426 | if (!(p_dev->_win & CLIENT_WIN_REQ(wh))) { | |
6d9a299f | 427 | dev_dbg(&s->dev, "not releasing unknown window\n"); |
ffb8da20 | 428 | return -EINVAL; |
6d9a299f | 429 | } |
1a8d4663 DB |
430 | |
431 | /* Shut down memory window */ | |
82f88e36 DB |
432 | win->flags &= ~MAP_ACTIVE; |
433 | s->ops->set_mem_map(s, win); | |
0bdf9b3d | 434 | s->state &= ~SOCKET_WIN_REQ(wh); |
1a8d4663 DB |
435 | |
436 | /* Release system memory */ | |
82f88e36 DB |
437 | if (win->res) { |
438 | release_resource(win->res); | |
439 | kfree(win->res); | |
440 | win->res = NULL; | |
1a8d4663 | 441 | } |
0bdf9b3d | 442 | p_dev->_win &= ~CLIENT_WIN_REQ(wh); |
1a8d4663 | 443 | |
4c89e88b | 444 | return 0; |
1a8d4663 DB |
445 | } /* pcmcia_release_window */ |
446 | EXPORT_SYMBOL(pcmcia_release_window); | |
447 | ||
448 | ||
2bc5a9bd | 449 | int pcmcia_request_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
450 | config_req_t *req) |
451 | { | |
452 | int i; | |
453 | u_int base; | |
2bc5a9bd | 454 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
455 | config_t *c; |
456 | pccard_io_map iomap; | |
457 | ||
1a8d4663 | 458 | if (!(s->state & SOCKET_PRESENT)) |
d598de02 | 459 | return -ENODEV; |
1a8d4663 | 460 | |
de6405e9 | 461 | if (req->IntType & INT_CARDBUS) { |
d50dbec3 | 462 | dev_dbg(&s->dev, "IntType may not be INT_CARDBUS\n"); |
de6405e9 DB |
463 | return -EINVAL; |
464 | } | |
dbb22f0d | 465 | c = p_dev->function_config; |
6d9a299f DB |
466 | if (c->state & CONFIG_LOCKED) { |
467 | dev_dbg(&s->dev, "Configuration is locked\n"); | |
943f70f1 | 468 | return -EACCES; |
6d9a299f | 469 | } |
1a8d4663 DB |
470 | |
471 | /* Do power control. We don't allow changes in Vcc. */ | |
70294b46 | 472 | s->socket.Vpp = req->Vpp; |
d8b0a49d DB |
473 | if (s->ops->set_socket(s, &s->socket)) { |
474 | dev_printk(KERN_WARNING, &s->dev, | |
475 | "Unable to set socket state\n"); | |
476 | return -EINVAL; | |
477 | } | |
1a8d4663 | 478 | |
1a8d4663 DB |
479 | /* Pick memory or I/O card, DMA mode, interrupt */ |
480 | c->IntType = req->IntType; | |
481 | c->Attributes = req->Attributes; | |
482 | if (req->IntType & INT_MEMORY_AND_IO) | |
483 | s->socket.flags |= SS_IOCARD; | |
484 | if (req->IntType & INT_ZOOMED_VIDEO) | |
485 | s->socket.flags |= SS_ZVCARD | SS_IOCARD; | |
486 | if (req->Attributes & CONF_ENABLE_DMA) | |
487 | s->socket.flags |= SS_DMA_MODE; | |
488 | if (req->Attributes & CONF_ENABLE_SPKR) | |
489 | s->socket.flags |= SS_SPKR_ENA; | |
490 | if (req->Attributes & CONF_ENABLE_IRQ) | |
491 | s->socket.io_irq = s->irq.AssignedIRQ; | |
492 | else | |
493 | s->socket.io_irq = 0; | |
494 | s->ops->set_socket(s, &s->socket); | |
495 | s->lock_count++; | |
496 | ||
497 | /* Set up CIS configuration registers */ | |
498 | base = c->ConfigBase = req->ConfigBase; | |
1ae9c7d8 | 499 | c->CardValues = req->Present; |
1a8d4663 DB |
500 | if (req->Present & PRESENT_COPY) { |
501 | c->Copy = req->Copy; | |
502 | pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy); | |
503 | } | |
504 | if (req->Present & PRESENT_OPTION) { | |
505 | if (s->functions == 1) { | |
506 | c->Option = req->ConfigIndex & COR_CONFIG_MASK; | |
507 | } else { | |
508 | c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK; | |
509 | c->Option |= COR_FUNC_ENA|COR_IREQ_ENA; | |
510 | if (req->Present & PRESENT_IOBASE_0) | |
511 | c->Option |= COR_ADDR_DECODE; | |
512 | } | |
513 | if (c->state & CONFIG_IRQ_REQ) | |
514 | if (!(c->irq.Attributes & IRQ_FORCED_PULSE)) | |
515 | c->Option |= COR_LEVEL_REQ; | |
516 | pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option); | |
517 | mdelay(40); | |
518 | } | |
519 | if (req->Present & PRESENT_STATUS) { | |
520 | c->Status = req->Status; | |
521 | pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status); | |
522 | } | |
523 | if (req->Present & PRESENT_PIN_REPLACE) { | |
524 | c->Pin = req->Pin; | |
525 | pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin); | |
526 | } | |
527 | if (req->Present & PRESENT_EXT_STATUS) { | |
528 | c->ExtStatus = req->ExtStatus; | |
529 | pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus); | |
530 | } | |
531 | if (req->Present & PRESENT_IOBASE_0) { | |
532 | u_char b = c->io.BasePort1 & 0xff; | |
533 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); | |
534 | b = (c->io.BasePort1 >> 8) & 0xff; | |
535 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); | |
536 | } | |
537 | if (req->Present & PRESENT_IOSIZE) { | |
538 | u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1; | |
539 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); | |
540 | } | |
541 | ||
542 | /* Configure I/O windows */ | |
543 | if (c->state & CONFIG_IO_REQ) { | |
544 | iomap.speed = io_speed; | |
545 | for (i = 0; i < MAX_IO_WIN; i++) | |
c7d00693 | 546 | if (s->io[i].res) { |
1a8d4663 DB |
547 | iomap.map = i; |
548 | iomap.flags = MAP_ACTIVE; | |
c7d00693 | 549 | switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) { |
1a8d4663 DB |
550 | case IO_DATA_PATH_WIDTH_16: |
551 | iomap.flags |= MAP_16BIT; break; | |
552 | case IO_DATA_PATH_WIDTH_AUTO: | |
553 | iomap.flags |= MAP_AUTOSZ; break; | |
554 | default: | |
555 | break; | |
556 | } | |
c7d00693 DB |
557 | iomap.start = s->io[i].res->start; |
558 | iomap.stop = s->io[i].res->end; | |
1a8d4663 DB |
559 | s->ops->set_io_map(s, &iomap); |
560 | s->io[i].Config++; | |
561 | } | |
562 | } | |
563 | ||
564 | c->state |= CONFIG_LOCKED; | |
e2d40963 | 565 | p_dev->_locked = 1; |
4c89e88b | 566 | return 0; |
1a8d4663 DB |
567 | } /* pcmcia_request_configuration */ |
568 | EXPORT_SYMBOL(pcmcia_request_configuration); | |
569 | ||
570 | ||
571 | /** pcmcia_request_io | |
572 | * | |
573 | * Request_io() reserves ranges of port addresses for a socket. | |
574 | * I have not implemented range sharing or alias addressing. | |
575 | */ | |
2bc5a9bd | 576 | int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 577 | { |
2bc5a9bd | 578 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
579 | config_t *c; |
580 | ||
6d9a299f DB |
581 | if (!(s->state & SOCKET_PRESENT)) { |
582 | dev_dbg(&s->dev, "No card present\n"); | |
3939c1ef | 583 | return -ENODEV; |
6d9a299f | 584 | } |
1a8d4663 | 585 | |
1a8d4663 | 586 | if (!req) |
de6405e9 | 587 | return -EINVAL; |
dbb22f0d | 588 | c = p_dev->function_config; |
6d9a299f DB |
589 | if (c->state & CONFIG_LOCKED) { |
590 | dev_dbg(&s->dev, "Configuration is locked\n"); | |
943f70f1 | 591 | return -EACCES; |
6d9a299f | 592 | } |
f958095e | 593 | if (c->state & CONFIG_IO_REQ) { |
d50dbec3 | 594 | dev_dbg(&s->dev, "IO already configured\n"); |
f958095e DB |
595 | return -EBUSY; |
596 | } | |
610e2374 | 597 | if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) { |
d50dbec3 | 598 | dev_dbg(&s->dev, "bad attribute setting for IO region 1\n"); |
610e2374 DB |
599 | return -EINVAL; |
600 | } | |
1a8d4663 | 601 | if ((req->NumPorts2 > 0) && |
610e2374 | 602 | (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) { |
d50dbec3 | 603 | dev_dbg(&s->dev, "bad attribute setting for IO region 2\n"); |
610e2374 DB |
604 | return -EINVAL; |
605 | } | |
1a8d4663 | 606 | |
d50dbec3 | 607 | dev_dbg(&s->dev, "trying to allocate resource 1\n"); |
1a8d4663 | 608 | if (alloc_io_space(s, req->Attributes1, &req->BasePort1, |
f958095e | 609 | req->NumPorts1, req->IOAddrLines)) { |
d50dbec3 | 610 | dev_dbg(&s->dev, "allocation of resource 1 failed\n"); |
f958095e DB |
611 | return -EBUSY; |
612 | } | |
1a8d4663 DB |
613 | |
614 | if (req->NumPorts2) { | |
d50dbec3 | 615 | dev_dbg(&s->dev, "trying to allocate resource 2\n"); |
1a8d4663 DB |
616 | if (alloc_io_space(s, req->Attributes2, &req->BasePort2, |
617 | req->NumPorts2, req->IOAddrLines)) { | |
d50dbec3 | 618 | dev_dbg(&s->dev, "allocation of resource 2 failed\n"); |
1a8d4663 | 619 | release_io_space(s, req->BasePort1, req->NumPorts1); |
f958095e | 620 | return -EBUSY; |
1a8d4663 DB |
621 | } |
622 | } | |
623 | ||
624 | c->io = *req; | |
625 | c->state |= CONFIG_IO_REQ; | |
e2d40963 | 626 | p_dev->_io = 1; |
4c89e88b | 627 | return 0; |
1a8d4663 DB |
628 | } /* pcmcia_request_io */ |
629 | EXPORT_SYMBOL(pcmcia_request_io); | |
630 | ||
631 | ||
632 | /** pcmcia_request_irq | |
633 | * | |
634 | * Request_irq() reserves an irq for this client. | |
635 | * | |
636 | * Also, since Linux only reserves irq's when they are actually | |
637 | * hooked, we don't guarantee that an irq will still be available | |
638 | * when the configuration is locked. Now that I think about it, | |
639 | * there might be a way to fix this using a dummy handler. | |
640 | */ | |
641 | ||
642 | #ifdef CONFIG_PCMCIA_PROBE | |
7d12e780 | 643 | static irqreturn_t test_action(int cpl, void *dev_id) |
1a8d4663 DB |
644 | { |
645 | return IRQ_NONE; | |
646 | } | |
647 | #endif | |
648 | ||
2bc5a9bd | 649 | int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 650 | { |
2bc5a9bd | 651 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 | 652 | config_t *c; |
f958095e | 653 | int ret = -EINVAL, irq = 0; |
c533120b | 654 | int type; |
1a8d4663 | 655 | |
6d9a299f DB |
656 | if (!(s->state & SOCKET_PRESENT)) { |
657 | dev_dbg(&s->dev, "No card present\n"); | |
3939c1ef | 658 | return -ENODEV; |
6d9a299f | 659 | } |
dbb22f0d | 660 | c = p_dev->function_config; |
6d9a299f DB |
661 | if (c->state & CONFIG_LOCKED) { |
662 | dev_dbg(&s->dev, "Configuration is locked\n"); | |
943f70f1 | 663 | return -EACCES; |
6d9a299f | 664 | } |
f958095e | 665 | if (c->state & CONFIG_IRQ_REQ) { |
d50dbec3 | 666 | dev_dbg(&s->dev, "IRQ already configured\n"); |
f958095e DB |
667 | return -EBUSY; |
668 | } | |
1a8d4663 | 669 | |
c533120b AC |
670 | /* Decide what type of interrupt we are registering */ |
671 | type = 0; | |
672 | if (s->functions > 1) /* All of this ought to be handled higher up */ | |
dace1453 | 673 | type = IRQF_SHARED; |
7bbfd39b | 674 | else if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) |
dace1453 | 675 | type = IRQF_SHARED; |
9fea84f4 DB |
676 | else |
677 | printk(KERN_WARNING "pcmcia: Driver needs updating to support IRQ sharing.\n"); | |
c533120b | 678 | |
1a8d4663 | 679 | #ifdef CONFIG_PCMCIA_PROBE |
635416ef AC |
680 | |
681 | #ifdef IRQ_NOAUTOEN | |
682 | /* if the underlying IRQ infrastructure allows for it, only allocate | |
683 | * the IRQ, but do not enable it | |
684 | */ | |
5fa9167a | 685 | if (!(req->Handler)) |
635416ef AC |
686 | type |= IRQ_NOAUTOEN; |
687 | #endif /* IRQ_NOAUTOEN */ | |
688 | ||
1a8d4663 DB |
689 | if (s->irq.AssignedIRQ != 0) { |
690 | /* If the interrupt is already assigned, it must be the same */ | |
691 | irq = s->irq.AssignedIRQ; | |
692 | } else { | |
693 | int try; | |
694 | u32 mask = s->irq_mask; | |
5fa9167a | 695 | void *data = p_dev; /* something unique to this device */ |
1a8d4663 DB |
696 | |
697 | for (try = 0; try < 64; try++) { | |
698 | irq = try % 32; | |
699 | ||
700 | /* marked as available by driver, and not blocked by userspace? */ | |
701 | if (!((mask >> irq) & 1)) | |
702 | continue; | |
703 | ||
704 | /* avoid an IRQ which is already used by a PCMCIA card */ | |
705 | if ((try < 32) && pcmcia_used_irq[irq]) | |
706 | continue; | |
707 | ||
708 | /* register the correct driver, if possible, of check whether | |
709 | * registering a dummy handle works, i.e. if the IRQ isn't | |
710 | * marked as used by the kernel resource management core */ | |
711 | ret = request_irq(irq, | |
5fa9167a | 712 | (req->Handler) ? req->Handler : test_action, |
c533120b | 713 | type, |
bd65a685 | 714 | p_dev->devname, |
5fa9167a | 715 | (req->Handler) ? p_dev->priv : data); |
1a8d4663 | 716 | if (!ret) { |
5fa9167a | 717 | if (!req->Handler) |
1a8d4663 DB |
718 | free_irq(irq, data); |
719 | break; | |
720 | } | |
721 | } | |
722 | } | |
723 | #endif | |
c181e0e0 DR |
724 | /* only assign PCI irq if no IRQ already assigned */ |
725 | if (ret && !s->irq.AssignedIRQ) { | |
6d9a299f DB |
726 | if (!s->pci_irq) { |
727 | dev_printk(KERN_INFO, &s->dev, "no IRQ found\n"); | |
1a8d4663 | 728 | return ret; |
6d9a299f | 729 | } |
dace1453 | 730 | type = IRQF_SHARED; |
1a8d4663 DB |
731 | irq = s->pci_irq; |
732 | } | |
733 | ||
5fa9167a | 734 | if (ret && req->Handler) { |
f958095e | 735 | ret = request_irq(irq, req->Handler, type, |
5fa9167a | 736 | p_dev->devname, p_dev->priv); |
6d9a299f DB |
737 | if (ret) { |
738 | dev_printk(KERN_INFO, &s->dev, | |
739 | "request_irq() failed\n"); | |
f958095e | 740 | return ret; |
6d9a299f | 741 | } |
1a8d4663 DB |
742 | } |
743 | ||
c533120b | 744 | /* Make sure the fact the request type was overridden is passed back */ |
dace1453 | 745 | if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) { |
c533120b | 746 | req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING; |
ac449d6e DB |
747 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: " |
748 | "request for exclusive IRQ could not be fulfilled.\n"); | |
749 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver " | |
750 | "needs updating to supported shared IRQ lines.\n"); | |
c533120b | 751 | } |
1a8d4663 DB |
752 | c->irq.Attributes = req->Attributes; |
753 | s->irq.AssignedIRQ = req->AssignedIRQ = irq; | |
754 | s->irq.Config++; | |
755 | ||
756 | c->state |= CONFIG_IRQ_REQ; | |
e2d40963 | 757 | p_dev->_irq = 1; |
1a8d4663 DB |
758 | |
759 | #ifdef CONFIG_PCMCIA_PROBE | |
760 | pcmcia_used_irq[irq]++; | |
761 | #endif | |
762 | ||
4c89e88b | 763 | return 0; |
1a8d4663 DB |
764 | } /* pcmcia_request_irq */ |
765 | EXPORT_SYMBOL(pcmcia_request_irq); | |
766 | ||
767 | ||
768 | /** pcmcia_request_window | |
769 | * | |
770 | * Request_window() establishes a mapping between card memory space | |
771 | * and system memory space. | |
772 | */ | |
6838b03f | 773 | int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_handle_t *wh) |
1a8d4663 | 774 | { |
6838b03f | 775 | struct pcmcia_socket *s = p_dev->socket; |
82f88e36 | 776 | pccard_mem_map *win; |
1a8d4663 DB |
777 | u_long align; |
778 | int w; | |
779 | ||
6d9a299f DB |
780 | if (!(s->state & SOCKET_PRESENT)) { |
781 | dev_dbg(&s->dev, "No card present\n"); | |
3939c1ef | 782 | return -ENODEV; |
6d9a299f | 783 | } |
610e2374 | 784 | if (req->Attributes & (WIN_PAGED | WIN_SHARED)) { |
d50dbec3 | 785 | dev_dbg(&s->dev, "bad attribute setting for iomem region\n"); |
610e2374 DB |
786 | return -EINVAL; |
787 | } | |
1a8d4663 DB |
788 | |
789 | /* Window size defaults to smallest available */ | |
790 | if (req->Size == 0) | |
791 | req->Size = s->map_size; | |
792 | align = (((s->features & SS_CAP_MEM_ALIGN) || | |
793 | (req->Attributes & WIN_STRICT_ALIGN)) ? | |
794 | req->Size : s->map_size); | |
69ba4433 | 795 | if (req->Size & (s->map_size-1)) { |
d50dbec3 | 796 | dev_dbg(&s->dev, "invalid map size\n"); |
69ba4433 DB |
797 | return -EINVAL; |
798 | } | |
1a8d4663 | 799 | if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) || |
69ba4433 | 800 | (req->Base & (align-1))) { |
d50dbec3 | 801 | dev_dbg(&s->dev, "invalid base address\n"); |
69ba4433 DB |
802 | return -EINVAL; |
803 | } | |
1a8d4663 DB |
804 | if (req->Base) |
805 | align = 0; | |
806 | ||
807 | /* Allocate system memory window */ | |
808 | for (w = 0; w < MAX_WIN; w++) | |
9fea84f4 DB |
809 | if (!(s->state & SOCKET_WIN_REQ(w))) |
810 | break; | |
f958095e | 811 | if (w == MAX_WIN) { |
d50dbec3 | 812 | dev_dbg(&s->dev, "all windows are used already\n"); |
f958095e DB |
813 | return -EINVAL; |
814 | } | |
1a8d4663 DB |
815 | |
816 | win = &s->win[w]; | |
1a8d4663 DB |
817 | |
818 | if (!(s->features & SS_CAP_STATIC_MAP)) { | |
82f88e36 | 819 | win->res = pcmcia_find_mem_region(req->Base, req->Size, align, |
1a8d4663 | 820 | (req->Attributes & WIN_MAP_BELOW_1MB), s); |
82f88e36 | 821 | if (!win->res) { |
d50dbec3 | 822 | dev_dbg(&s->dev, "allocating mem region failed\n"); |
f958095e DB |
823 | return -EINVAL; |
824 | } | |
1a8d4663 | 825 | } |
6838b03f | 826 | p_dev->_win |= CLIENT_WIN_REQ(w); |
1a8d4663 DB |
827 | |
828 | /* Configure the socket controller */ | |
82f88e36 DB |
829 | win->map = w+1; |
830 | win->flags = 0; | |
831 | win->speed = req->AccessSpeed; | |
1a8d4663 | 832 | if (req->Attributes & WIN_MEMORY_TYPE) |
82f88e36 | 833 | win->flags |= MAP_ATTRIB; |
1a8d4663 | 834 | if (req->Attributes & WIN_ENABLE) |
82f88e36 | 835 | win->flags |= MAP_ACTIVE; |
1a8d4663 | 836 | if (req->Attributes & WIN_DATA_WIDTH_16) |
82f88e36 | 837 | win->flags |= MAP_16BIT; |
1a8d4663 | 838 | if (req->Attributes & WIN_USE_WAIT) |
82f88e36 DB |
839 | win->flags |= MAP_USE_WAIT; |
840 | win->card_start = 0; | |
841 | if (s->ops->set_mem_map(s, win) != 0) { | |
d50dbec3 | 842 | dev_dbg(&s->dev, "failed to set memory mapping\n"); |
926c5402 DB |
843 | return -EIO; |
844 | } | |
1a8d4663 DB |
845 | s->state |= SOCKET_WIN_REQ(w); |
846 | ||
847 | /* Return window handle */ | |
9fea84f4 | 848 | if (s->features & SS_CAP_STATIC_MAP) |
82f88e36 | 849 | req->Base = win->static_start; |
9fea84f4 | 850 | else |
82f88e36 | 851 | req->Base = win->res->start; |
9fea84f4 | 852 | |
0bdf9b3d | 853 | *wh = w + 1; |
1a8d4663 | 854 | |
4c89e88b | 855 | return 0; |
1a8d4663 DB |
856 | } /* pcmcia_request_window */ |
857 | EXPORT_SYMBOL(pcmcia_request_window); | |
5f2a71fc | 858 | |
9fea84f4 DB |
859 | void pcmcia_disable_device(struct pcmcia_device *p_dev) |
860 | { | |
5f2a71fc | 861 | pcmcia_release_configuration(p_dev); |
fd238232 DB |
862 | pcmcia_release_io(p_dev, &p_dev->io); |
863 | pcmcia_release_irq(p_dev, &p_dev->irq); | |
c1ac0228 | 864 | if (p_dev->win) |
f5560da5 | 865 | pcmcia_release_window(p_dev, p_dev->win); |
5f2a71fc DB |
866 | } |
867 | EXPORT_SYMBOL(pcmcia_disable_device); | |
a804b574 DB |
868 | |
869 | ||
870 | struct pcmcia_cfg_mem { | |
91284224 DB |
871 | struct pcmcia_device *p_dev; |
872 | void *priv_data; | |
873 | int (*conf_check) (struct pcmcia_device *p_dev, | |
874 | cistpl_cftable_entry_t *cfg, | |
875 | cistpl_cftable_entry_t *dflt, | |
876 | unsigned int vcc, | |
877 | void *priv_data); | |
a804b574 | 878 | cisparse_t parse; |
8e2fc39d | 879 | cistpl_cftable_entry_t dflt; |
a804b574 DB |
880 | }; |
881 | ||
91284224 DB |
882 | /** |
883 | * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config() | |
884 | * | |
885 | * pcmcia_do_loop_config() is the internal callback for the call from | |
886 | * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred | |
887 | * by a struct pcmcia_cfg_mem. | |
888 | */ | |
889 | static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv) | |
890 | { | |
891 | cistpl_cftable_entry_t *cfg = &parse->cftable_entry; | |
892 | struct pcmcia_cfg_mem *cfg_mem = priv; | |
893 | ||
894 | /* default values */ | |
895 | cfg_mem->p_dev->conf.ConfigIndex = cfg->index; | |
896 | if (cfg->flags & CISTPL_CFTABLE_DEFAULT) | |
897 | cfg_mem->dflt = *cfg; | |
898 | ||
899 | return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt, | |
900 | cfg_mem->p_dev->socket->socket.Vcc, | |
901 | cfg_mem->priv_data); | |
902 | } | |
903 | ||
a804b574 DB |
904 | /** |
905 | * pcmcia_loop_config() - loop over configuration options | |
906 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
907 | * @conf_check: function to call for each configuration option. | |
908 | * It gets passed the struct pcmcia_device, the CIS data | |
909 | * describing the configuration option, and private data | |
910 | * being passed to pcmcia_loop_config() | |
911 | * @priv_data: private data to be passed to the conf_check function. | |
912 | * | |
913 | * pcmcia_loop_config() loops over all configuration options, and calls | |
914 | * the driver-specific conf_check() for each one, checking whether | |
889c2774 | 915 | * it is a valid one. Returns 0 on success or errorcode otherwise. |
a804b574 DB |
916 | */ |
917 | int pcmcia_loop_config(struct pcmcia_device *p_dev, | |
918 | int (*conf_check) (struct pcmcia_device *p_dev, | |
919 | cistpl_cftable_entry_t *cfg, | |
8e2fc39d | 920 | cistpl_cftable_entry_t *dflt, |
ad913c11 | 921 | unsigned int vcc, |
a804b574 DB |
922 | void *priv_data), |
923 | void *priv_data) | |
924 | { | |
925 | struct pcmcia_cfg_mem *cfg_mem; | |
889c2774 | 926 | int ret; |
a804b574 DB |
927 | |
928 | cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL); | |
929 | if (cfg_mem == NULL) | |
930 | return -ENOMEM; | |
931 | ||
91284224 DB |
932 | cfg_mem->p_dev = p_dev; |
933 | cfg_mem->conf_check = conf_check; | |
934 | cfg_mem->priv_data = priv_data; | |
ad913c11 | 935 | |
91284224 DB |
936 | ret = pccard_loop_tuple(p_dev->socket, p_dev->func, |
937 | CISTPL_CFTABLE_ENTRY, &cfg_mem->parse, | |
938 | cfg_mem, pcmcia_do_loop_config); | |
a804b574 | 939 | |
91284224 DB |
940 | kfree(cfg_mem); |
941 | return ret; | |
942 | } | |
943 | EXPORT_SYMBOL(pcmcia_loop_config); | |
498ac189 | 944 | |
a804b574 | 945 | |
91284224 DB |
946 | struct pcmcia_loop_mem { |
947 | struct pcmcia_device *p_dev; | |
948 | void *priv_data; | |
949 | int (*loop_tuple) (struct pcmcia_device *p_dev, | |
950 | tuple_t *tuple, | |
951 | void *priv_data); | |
952 | }; | |
a804b574 | 953 | |
91284224 DB |
954 | /** |
955 | * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config() | |
956 | * | |
957 | * pcmcia_do_loop_tuple() is the internal callback for the call from | |
958 | * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred | |
959 | * by a struct pcmcia_cfg_mem. | |
960 | */ | |
961 | static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv) | |
962 | { | |
963 | struct pcmcia_loop_mem *loop = priv; | |
498ac189 | 964 | |
91284224 DB |
965 | return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data); |
966 | }; | |
967 | ||
968 | /** | |
969 | * pcmcia_loop_tuple() - loop over tuples in the CIS | |
970 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
971 | * @code: which CIS code shall we look for? | |
972 | * @priv_data: private data to be passed to the loop_tuple function. | |
973 | * @loop_tuple: function to call for each CIS entry of type @function. IT | |
974 | * gets passed the raw tuple and @priv_data. | |
975 | * | |
976 | * pcmcia_loop_tuple() loops over all CIS entries of type @function, and | |
977 | * calls the @loop_tuple function for each entry. If the call to @loop_tuple | |
978 | * returns 0, the loop exits. Returns 0 on success or errorcode otherwise. | |
979 | */ | |
980 | int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code, | |
981 | int (*loop_tuple) (struct pcmcia_device *p_dev, | |
982 | tuple_t *tuple, | |
983 | void *priv_data), | |
984 | void *priv_data) | |
985 | { | |
986 | struct pcmcia_loop_mem loop = { | |
987 | .p_dev = p_dev, | |
988 | .loop_tuple = loop_tuple, | |
989 | .priv_data = priv_data}; | |
990 | ||
991 | return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL, | |
992 | &loop, pcmcia_do_loop_tuple); | |
9fea84f4 | 993 | } |
91284224 | 994 | EXPORT_SYMBOL(pcmcia_loop_tuple); |
a804b574 | 995 | |
91284224 DB |
996 | |
997 | struct pcmcia_loop_get { | |
998 | size_t len; | |
999 | cisdata_t **buf; | |
1000 | }; | |
1001 | ||
1002 | /** | |
1003 | * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple() | |
1004 | * | |
1005 | * pcmcia_do_get_tuple() is the internal callback for the call from | |
1006 | * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in | |
1007 | * the first tuple, return 0 unconditionally. Create a memory buffer large | |
1008 | * enough to hold the content of the tuple, and fill it with the tuple data. | |
1009 | * The caller is responsible to free the buffer. | |
1010 | */ | |
1011 | static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple, | |
1012 | void *priv) | |
1013 | { | |
1014 | struct pcmcia_loop_get *get = priv; | |
1015 | ||
1016 | *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL); | |
1017 | if (*get->buf) { | |
1018 | get->len = tuple->TupleDataLen; | |
1019 | memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen); | |
6d9a299f DB |
1020 | } else |
1021 | dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n"); | |
91284224 | 1022 | return 0; |
9fea84f4 | 1023 | } |
91284224 DB |
1024 | |
1025 | /** | |
1026 | * pcmcia_get_tuple() - get first tuple from CIS | |
1027 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
1028 | * @code: which CIS code shall we look for? | |
1029 | * @buf: pointer to store the buffer to. | |
1030 | * | |
1031 | * pcmcia_get_tuple() gets the content of the first CIS entry of type @code. | |
1032 | * It returns the buffer length (or zero). The caller is responsible to free | |
1033 | * the buffer passed in @buf. | |
1034 | */ | |
1035 | size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code, | |
1036 | unsigned char **buf) | |
1037 | { | |
1038 | struct pcmcia_loop_get get = { | |
1039 | .len = 0, | |
1040 | .buf = buf, | |
1041 | }; | |
1042 | ||
1043 | *get.buf = NULL; | |
1044 | pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get); | |
1045 | ||
1046 | return get.len; | |
9fea84f4 | 1047 | } |
91284224 DB |
1048 | EXPORT_SYMBOL(pcmcia_get_tuple); |
1049 | ||
1050 | ||
1051 | /** | |
1052 | * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis() | |
1053 | * | |
1054 | * pcmcia_do_get_mac() is the internal callback for the call from | |
1055 | * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the | |
1056 | * tuple contains a proper LAN_NODE_ID of length 6, and copy the data | |
1057 | * to struct net_device->dev_addr[i]. | |
1058 | */ | |
1059 | static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple, | |
1060 | void *priv) | |
1061 | { | |
1062 | struct net_device *dev = priv; | |
1063 | int i; | |
1064 | ||
1065 | if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID) | |
1066 | return -EINVAL; | |
1067 | if (tuple->TupleDataLen < ETH_ALEN + 2) { | |
1068 | dev_warn(&p_dev->dev, "Invalid CIS tuple length for " | |
1069 | "LAN_NODE_ID\n"); | |
1070 | return -EINVAL; | |
1071 | } | |
1072 | ||
1073 | if (tuple->TupleData[1] != ETH_ALEN) { | |
1074 | dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n"); | |
1075 | return -EINVAL; | |
1076 | } | |
1077 | for (i = 0; i < 6; i++) | |
1078 | dev->dev_addr[i] = tuple->TupleData[i+2]; | |
1079 | return 0; | |
9fea84f4 | 1080 | } |
91284224 DB |
1081 | |
1082 | /** | |
1083 | * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE | |
1084 | * @p_dev: the struct pcmcia_device for which we want the address. | |
1085 | * @dev: a properly prepared struct net_device to store the info to. | |
1086 | * | |
1087 | * pcmcia_get_mac_from_cis() reads out the hardware MAC address from | |
1088 | * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which | |
1089 | * must be set up properly by the driver (see examples!). | |
1090 | */ | |
1091 | int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev) | |
1092 | { | |
1093 | return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev); | |
9fea84f4 | 1094 | } |
91284224 | 1095 | EXPORT_SYMBOL(pcmcia_get_mac_from_cis); |
a804b574 | 1096 |