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 | ||
a3ac9af5 DB |
63 | int pcmcia_validate_mem(struct pcmcia_socket *s) |
64 | { | |
65 | if (s->resource_ops->validate_mem) | |
66 | return s->resource_ops->validate_mem(s); | |
67 | /* if there is no callback, we can assume that everything is OK */ | |
68 | return 0; | |
69 | } | |
70 | ||
71 | struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align, | |
72 | int low, struct pcmcia_socket *s) | |
73 | { | |
74 | if (s->resource_ops->find_mem) | |
75 | return s->resource_ops->find_mem(base, num, align, low, s); | |
76 | return NULL; | |
77 | } | |
78 | ||
1a8d4663 | 79 | |
1a8d4663 DB |
80 | /** alloc_io_space |
81 | * | |
82 | * Special stuff for managing IO windows, because they are scarce | |
83 | */ | |
84 | ||
ecb8a847 OJ |
85 | static int alloc_io_space(struct pcmcia_socket *s, u_int attr, |
86 | unsigned int *base, unsigned int num, u_int lines) | |
1a8d4663 DB |
87 | { |
88 | int i; | |
ecb8a847 | 89 | unsigned int try, align; |
1a8d4663 DB |
90 | |
91 | align = (*base) ? (lines ? 1<<lines : 0) : 1; | |
92 | if (align && (align < num)) { | |
93 | if (*base) { | |
d50dbec3 | 94 | dev_dbg(&s->dev, "odd IO request: num %#x align %#x\n", |
1a8d4663 DB |
95 | num, align); |
96 | align = 0; | |
97 | } else | |
9fea84f4 DB |
98 | while (align && (align < num)) |
99 | align <<= 1; | |
1a8d4663 DB |
100 | } |
101 | if (*base & ~(align-1)) { | |
d50dbec3 | 102 | dev_dbg(&s->dev, "odd IO request: base %#x align %#x\n", |
1a8d4663 DB |
103 | *base, align); |
104 | align = 0; | |
105 | } | |
106 | if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) { | |
107 | *base = s->io_offset | (*base & 0x0fff); | |
108 | return 0; | |
109 | } | |
110 | /* Check for an already-allocated window that must conflict with | |
111 | * what was asked for. It is a hack because it does not catch all | |
112 | * potential conflicts, just the most obvious ones. | |
113 | */ | |
114 | for (i = 0; i < MAX_IO_WIN; i++) | |
4708b5fa | 115 | if ((s->io[i].res) && *base && |
c7d00693 | 116 | ((s->io[i].res->start & (align-1)) == *base)) |
1a8d4663 DB |
117 | return 1; |
118 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 119 | if (!s->io[i].res) { |
1a8d4663 DB |
120 | s->io[i].res = pcmcia_find_io_region(*base, num, align, s); |
121 | if (s->io[i].res) { | |
c7d00693 DB |
122 | *base = s->io[i].res->start; |
123 | s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS); | |
124 | s->io[i].InUse = num; | |
1a8d4663 DB |
125 | break; |
126 | } else | |
127 | return 1; | |
c7d00693 | 128 | } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS)) |
1a8d4663 DB |
129 | continue; |
130 | /* Try to extend top of window */ | |
c7d00693 | 131 | try = s->io[i].res->end + 1; |
1a8d4663 DB |
132 | if ((*base == 0) || (*base == try)) |
133 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start, | |
134 | s->io[i].res->end + num, s) == 0) { | |
135 | *base = try; | |
1a8d4663 DB |
136 | s->io[i].InUse += num; |
137 | break; | |
138 | } | |
139 | /* Try to extend bottom of window */ | |
c7d00693 | 140 | try = s->io[i].res->start - num; |
1a8d4663 DB |
141 | if ((*base == 0) || (*base == try)) |
142 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num, | |
143 | s->io[i].res->end, s) == 0) { | |
c7d00693 | 144 | *base = try; |
1a8d4663 DB |
145 | s->io[i].InUse += num; |
146 | break; | |
147 | } | |
148 | } | |
149 | return (i == MAX_IO_WIN); | |
150 | } /* alloc_io_space */ | |
151 | ||
152 | ||
ecb8a847 OJ |
153 | static void release_io_space(struct pcmcia_socket *s, unsigned int base, |
154 | unsigned int num) | |
1a8d4663 DB |
155 | { |
156 | int i; | |
157 | ||
158 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 DB |
159 | if (!s->io[i].res) |
160 | continue; | |
161 | if ((s->io[i].res->start <= base) && | |
162 | (s->io[i].res->end >= base+num-1)) { | |
1a8d4663 DB |
163 | s->io[i].InUse -= num; |
164 | /* Free the window if no one else is using it */ | |
165 | if (s->io[i].InUse == 0) { | |
1a8d4663 DB |
166 | release_resource(s->io[i].res); |
167 | kfree(s->io[i].res); | |
168 | s->io[i].res = NULL; | |
169 | } | |
170 | } | |
171 | } | |
172 | } /* release_io_space */ | |
173 | ||
174 | ||
175 | /** pccard_access_configuration_register | |
176 | * | |
177 | * Access_configuration_register() reads and writes configuration | |
178 | * registers in attribute memory. Memory window 0 is reserved for | |
179 | * this and the tuple reading services. | |
180 | */ | |
181 | ||
855cdf13 | 182 | int pcmcia_access_configuration_register(struct pcmcia_device *p_dev, |
1a8d4663 DB |
183 | conf_reg_t *reg) |
184 | { | |
855cdf13 | 185 | struct pcmcia_socket *s; |
1a8d4663 DB |
186 | config_t *c; |
187 | int addr; | |
188 | u_char val; | |
189 | ||
855cdf13 | 190 | if (!p_dev || !p_dev->function_config) |
3939c1ef | 191 | return -EINVAL; |
1a8d4663 | 192 | |
855cdf13 DB |
193 | s = p_dev->socket; |
194 | c = p_dev->function_config; | |
1a8d4663 | 195 | |
6d9a299f DB |
196 | if (!(c->state & CONFIG_LOCKED)) { |
197 | dev_dbg(&s->dev, "Configuration isnt't locked\n"); | |
943f70f1 | 198 | return -EACCES; |
6d9a299f | 199 | } |
1a8d4663 DB |
200 | |
201 | addr = (c->ConfigBase + reg->Offset) >> 1; | |
202 | ||
203 | switch (reg->Action) { | |
204 | case CS_READ: | |
205 | pcmcia_read_cis_mem(s, 1, addr, 1, &val); | |
206 | reg->Value = val; | |
207 | break; | |
208 | case CS_WRITE: | |
209 | val = reg->Value; | |
210 | pcmcia_write_cis_mem(s, 1, addr, 1, &val); | |
211 | break; | |
212 | default: | |
6d9a299f | 213 | dev_dbg(&s->dev, "Invalid conf register request\n"); |
926c5402 | 214 | return -EINVAL; |
1a8d4663 DB |
215 | break; |
216 | } | |
4c89e88b | 217 | return 0; |
855cdf13 | 218 | } /* pcmcia_access_configuration_register */ |
3448139b DB |
219 | EXPORT_SYMBOL(pcmcia_access_configuration_register); |
220 | ||
1a8d4663 | 221 | |
868575d1 MD |
222 | int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh, |
223 | memreq_t *req) | |
1a8d4663 | 224 | { |
0bdf9b3d | 225 | struct pcmcia_socket *s = p_dev->socket; |
6b8e087b | 226 | int ret; |
868575d1 | 227 | |
0bdf9b3d MD |
228 | wh--; |
229 | if (wh >= MAX_WIN) | |
ffb8da20 | 230 | return -EINVAL; |
610e2374 | 231 | if (req->Page != 0) { |
d50dbec3 | 232 | dev_dbg(&s->dev, "failure: requested page is zero\n"); |
610e2374 DB |
233 | return -EINVAL; |
234 | } | |
6b8e087b | 235 | mutex_lock(&s->ops_mutex); |
82f88e36 | 236 | s->win[wh].card_start = req->CardOffset; |
6b8e087b DB |
237 | ret = s->ops->set_mem_map(s, &s->win[wh]); |
238 | if (ret) | |
239 | dev_warn(&s->dev, "failed to set_mem_map\n"); | |
240 | mutex_unlock(&s->ops_mutex); | |
241 | return ret; | |
1a8d4663 DB |
242 | } /* pcmcia_map_mem_page */ |
243 | EXPORT_SYMBOL(pcmcia_map_mem_page); | |
244 | ||
245 | ||
246 | /** pcmcia_modify_configuration | |
247 | * | |
248 | * Modify a locked socket configuration | |
249 | */ | |
2bc5a9bd | 250 | int pcmcia_modify_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
251 | modconf_t *mod) |
252 | { | |
253 | struct pcmcia_socket *s; | |
254 | config_t *c; | |
255 | ||
2bc5a9bd | 256 | s = p_dev->socket; |
dbb22f0d DB |
257 | c = p_dev->function_config; |
258 | ||
6d9a299f DB |
259 | if (!(s->state & SOCKET_PRESENT)) { |
260 | dev_dbg(&s->dev, "No card present\n"); | |
3939c1ef | 261 | return -ENODEV; |
6d9a299f DB |
262 | } |
263 | if (!(c->state & CONFIG_LOCKED)) { | |
264 | dev_dbg(&s->dev, "Configuration isnt't locked\n"); | |
943f70f1 | 265 | return -EACCES; |
6d9a299f | 266 | } |
1a8d4663 DB |
267 | |
268 | if (mod->Attributes & CONF_IRQ_CHANGE_VALID) { | |
269 | if (mod->Attributes & CONF_ENABLE_IRQ) { | |
270 | c->Attributes |= CONF_ENABLE_IRQ; | |
271 | s->socket.io_irq = s->irq.AssignedIRQ; | |
272 | } else { | |
273 | c->Attributes &= ~CONF_ENABLE_IRQ; | |
274 | s->socket.io_irq = 0; | |
275 | } | |
276 | s->ops->set_socket(s, &s->socket); | |
277 | } | |
278 | ||
d8b0a49d | 279 | if (mod->Attributes & CONF_VCC_CHANGE_VALID) { |
d50dbec3 | 280 | dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n"); |
d8b0a49d DB |
281 | return -EINVAL; |
282 | } | |
1a8d4663 DB |
283 | |
284 | /* We only allow changing Vpp1 and Vpp2 to the same value */ | |
285 | if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) && | |
286 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { | |
60df3de8 | 287 | if (mod->Vpp1 != mod->Vpp2) { |
d50dbec3 | 288 | dev_dbg(&s->dev, "Vpp1 and Vpp2 must be the same\n"); |
d8b0a49d | 289 | return -EINVAL; |
60df3de8 | 290 | } |
71ed90d8 | 291 | s->socket.Vpp = mod->Vpp1; |
d8b0a49d DB |
292 | if (s->ops->set_socket(s, &s->socket)) { |
293 | dev_printk(KERN_WARNING, &s->dev, | |
294 | "Unable to set VPP\n"); | |
295 | return -EIO; | |
296 | } | |
1a8d4663 | 297 | } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || |
d8b0a49d | 298 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { |
d50dbec3 | 299 | dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n"); |
d8b0a49d DB |
300 | return -EINVAL; |
301 | } | |
1a8d4663 | 302 | |
4bbed523 DB |
303 | if (mod->Attributes & CONF_IO_CHANGE_WIDTH) { |
304 | pccard_io_map io_off = { 0, 0, 0, 0, 1 }; | |
305 | pccard_io_map io_on; | |
306 | int i; | |
307 | ||
308 | io_on.speed = io_speed; | |
8533ee31 | 309 | mutex_lock(&s->ops_mutex); |
4bbed523 DB |
310 | for (i = 0; i < MAX_IO_WIN; i++) { |
311 | if (!s->io[i].res) | |
312 | continue; | |
313 | io_off.map = i; | |
314 | io_on.map = i; | |
315 | ||
316 | io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; | |
317 | io_on.start = s->io[i].res->start; | |
318 | io_on.stop = s->io[i].res->end; | |
319 | ||
320 | s->ops->set_io_map(s, &io_off); | |
321 | mdelay(40); | |
322 | s->ops->set_io_map(s, &io_on); | |
323 | } | |
8533ee31 | 324 | mutex_unlock(&s->ops_mutex); |
4bbed523 DB |
325 | } |
326 | ||
4c89e88b | 327 | return 0; |
1a8d4663 DB |
328 | } /* modify_configuration */ |
329 | EXPORT_SYMBOL(pcmcia_modify_configuration); | |
330 | ||
331 | ||
2bc5a9bd | 332 | int pcmcia_release_configuration(struct pcmcia_device *p_dev) |
1a8d4663 DB |
333 | { |
334 | pccard_io_map io = { 0, 0, 0, 0, 1 }; | |
2bc5a9bd | 335 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc | 336 | config_t *c = p_dev->function_config; |
1a8d4663 DB |
337 | int i; |
338 | ||
e2d40963 DB |
339 | if (p_dev->_locked) { |
340 | p_dev->_locked = 0; | |
1a8d4663 DB |
341 | if (--(s->lock_count) == 0) { |
342 | s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ | |
343 | s->socket.Vpp = 0; | |
344 | s->socket.io_irq = 0; | |
345 | s->ops->set_socket(s, &s->socket); | |
346 | } | |
5f2a71fc DB |
347 | } |
348 | if (c->state & CONFIG_LOCKED) { | |
349 | c->state &= ~CONFIG_LOCKED; | |
8533ee31 | 350 | mutex_lock(&s->ops_mutex); |
1a8d4663 DB |
351 | if (c->state & CONFIG_IO_REQ) |
352 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 353 | if (!s->io[i].res) |
1a8d4663 DB |
354 | continue; |
355 | s->io[i].Config--; | |
356 | if (s->io[i].Config != 0) | |
357 | continue; | |
358 | io.map = i; | |
359 | s->ops->set_io_map(s, &io); | |
360 | } | |
8533ee31 | 361 | mutex_unlock(&s->ops_mutex); |
1a8d4663 DB |
362 | } |
363 | ||
4c89e88b | 364 | return 0; |
1a8d4663 | 365 | } /* pcmcia_release_configuration */ |
1a8d4663 DB |
366 | |
367 | ||
368 | /** pcmcia_release_io | |
369 | * | |
370 | * Release_io() releases the I/O ranges allocated by a client. This | |
371 | * may be invoked some time after a card ejection has already dumped | |
372 | * the actual socket configuration, so if the client is "stale", we | |
373 | * don't bother checking the port ranges against the current socket | |
374 | * values. | |
375 | */ | |
b4c88400 | 376 | static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 377 | { |
2bc5a9bd | 378 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc | 379 | config_t *c = p_dev->function_config; |
1a8d4663 | 380 | |
9fea84f4 | 381 | if (!p_dev->_io) |
ffb8da20 | 382 | return -EINVAL; |
5f2a71fc | 383 | |
e2d40963 | 384 | p_dev->_io = 0; |
1a8d4663 | 385 | |
5f2a71fc DB |
386 | if ((c->io.BasePort1 != req->BasePort1) || |
387 | (c->io.NumPorts1 != req->NumPorts1) || | |
388 | (c->io.BasePort2 != req->BasePort2) || | |
389 | (c->io.NumPorts2 != req->NumPorts2)) | |
926c5402 | 390 | return -EINVAL; |
5f2a71fc DB |
391 | |
392 | c->state &= ~CONFIG_IO_REQ; | |
1a8d4663 DB |
393 | |
394 | release_io_space(s, req->BasePort1, req->NumPorts1); | |
395 | if (req->NumPorts2) | |
396 | release_io_space(s, req->BasePort2, req->NumPorts2); | |
397 | ||
4c89e88b | 398 | return 0; |
1a8d4663 | 399 | } /* pcmcia_release_io */ |
1a8d4663 DB |
400 | |
401 | ||
b4c88400 | 402 | static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 403 | { |
2bc5a9bd | 404 | struct pcmcia_socket *s = p_dev->socket; |
9fea84f4 | 405 | config_t *c = p_dev->function_config; |
5f2a71fc | 406 | |
e2d40963 | 407 | if (!p_dev->_irq) |
ffb8da20 | 408 | return -EINVAL; |
e2d40963 | 409 | p_dev->_irq = 0; |
1a8d4663 | 410 | |
5f2a71fc | 411 | if (c->state & CONFIG_LOCKED) |
943f70f1 | 412 | return -EACCES; |
610e2374 | 413 | if (c->irq.Attributes != req->Attributes) { |
d50dbec3 | 414 | dev_dbg(&s->dev, "IRQ attributes must match assigned ones\n"); |
610e2374 DB |
415 | return -EINVAL; |
416 | } | |
69ba4433 | 417 | if (s->irq.AssignedIRQ != req->AssignedIRQ) { |
d50dbec3 | 418 | dev_dbg(&s->dev, "IRQ must match assigned one\n"); |
69ba4433 DB |
419 | return -EINVAL; |
420 | } | |
5f2a71fc DB |
421 | if (--s->irq.Config == 0) { |
422 | c->state &= ~CONFIG_IRQ_REQ; | |
423 | s->irq.AssignedIRQ = 0; | |
1a8d4663 DB |
424 | } |
425 | ||
9fea84f4 | 426 | if (req->Handler) |
5fa9167a | 427 | free_irq(req->AssignedIRQ, p_dev->priv); |
1a8d4663 DB |
428 | |
429 | #ifdef CONFIG_PCMCIA_PROBE | |
430 | pcmcia_used_irq[req->AssignedIRQ]--; | |
431 | #endif | |
432 | ||
4c89e88b | 433 | return 0; |
1a8d4663 | 434 | } /* pcmcia_release_irq */ |
1a8d4663 DB |
435 | |
436 | ||
f5560da5 | 437 | int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh) |
1a8d4663 | 438 | { |
0bdf9b3d | 439 | struct pcmcia_socket *s = p_dev->socket; |
82f88e36 | 440 | pccard_mem_map *win; |
1a8d4663 | 441 | |
0bdf9b3d MD |
442 | wh--; |
443 | if (wh >= MAX_WIN) | |
ffb8da20 | 444 | return -EINVAL; |
0bdf9b3d | 445 | |
6b8e087b | 446 | mutex_lock(&s->ops_mutex); |
0bdf9b3d MD |
447 | win = &s->win[wh]; |
448 | ||
449 | if (!(p_dev->_win & CLIENT_WIN_REQ(wh))) { | |
6d9a299f | 450 | dev_dbg(&s->dev, "not releasing unknown window\n"); |
6b8e087b | 451 | mutex_unlock(&s->ops_mutex); |
ffb8da20 | 452 | return -EINVAL; |
6d9a299f | 453 | } |
1a8d4663 DB |
454 | |
455 | /* Shut down memory window */ | |
82f88e36 DB |
456 | win->flags &= ~MAP_ACTIVE; |
457 | s->ops->set_mem_map(s, win); | |
0bdf9b3d | 458 | s->state &= ~SOCKET_WIN_REQ(wh); |
1a8d4663 DB |
459 | |
460 | /* Release system memory */ | |
82f88e36 DB |
461 | if (win->res) { |
462 | release_resource(win->res); | |
463 | kfree(win->res); | |
464 | win->res = NULL; | |
1a8d4663 | 465 | } |
0bdf9b3d | 466 | p_dev->_win &= ~CLIENT_WIN_REQ(wh); |
6b8e087b | 467 | mutex_unlock(&s->ops_mutex); |
1a8d4663 | 468 | |
4c89e88b | 469 | return 0; |
1a8d4663 DB |
470 | } /* pcmcia_release_window */ |
471 | EXPORT_SYMBOL(pcmcia_release_window); | |
472 | ||
473 | ||
2bc5a9bd | 474 | int pcmcia_request_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
475 | config_req_t *req) |
476 | { | |
477 | int i; | |
478 | u_int base; | |
2bc5a9bd | 479 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
480 | config_t *c; |
481 | pccard_io_map iomap; | |
482 | ||
1a8d4663 | 483 | if (!(s->state & SOCKET_PRESENT)) |
d598de02 | 484 | return -ENODEV; |
1a8d4663 | 485 | |
de6405e9 | 486 | if (req->IntType & INT_CARDBUS) { |
d50dbec3 | 487 | dev_dbg(&s->dev, "IntType may not be INT_CARDBUS\n"); |
de6405e9 DB |
488 | return -EINVAL; |
489 | } | |
dbb22f0d | 490 | c = p_dev->function_config; |
6d9a299f DB |
491 | if (c->state & CONFIG_LOCKED) { |
492 | dev_dbg(&s->dev, "Configuration is locked\n"); | |
943f70f1 | 493 | return -EACCES; |
6d9a299f | 494 | } |
1a8d4663 DB |
495 | |
496 | /* Do power control. We don't allow changes in Vcc. */ | |
70294b46 | 497 | s->socket.Vpp = req->Vpp; |
d8b0a49d DB |
498 | if (s->ops->set_socket(s, &s->socket)) { |
499 | dev_printk(KERN_WARNING, &s->dev, | |
500 | "Unable to set socket state\n"); | |
501 | return -EINVAL; | |
502 | } | |
1a8d4663 | 503 | |
1a8d4663 DB |
504 | /* Pick memory or I/O card, DMA mode, interrupt */ |
505 | c->IntType = req->IntType; | |
506 | c->Attributes = req->Attributes; | |
507 | if (req->IntType & INT_MEMORY_AND_IO) | |
508 | s->socket.flags |= SS_IOCARD; | |
509 | if (req->IntType & INT_ZOOMED_VIDEO) | |
510 | s->socket.flags |= SS_ZVCARD | SS_IOCARD; | |
511 | if (req->Attributes & CONF_ENABLE_DMA) | |
512 | s->socket.flags |= SS_DMA_MODE; | |
513 | if (req->Attributes & CONF_ENABLE_SPKR) | |
514 | s->socket.flags |= SS_SPKR_ENA; | |
515 | if (req->Attributes & CONF_ENABLE_IRQ) | |
516 | s->socket.io_irq = s->irq.AssignedIRQ; | |
517 | else | |
518 | s->socket.io_irq = 0; | |
519 | s->ops->set_socket(s, &s->socket); | |
520 | s->lock_count++; | |
521 | ||
522 | /* Set up CIS configuration registers */ | |
523 | base = c->ConfigBase = req->ConfigBase; | |
1ae9c7d8 | 524 | c->CardValues = req->Present; |
1a8d4663 DB |
525 | if (req->Present & PRESENT_COPY) { |
526 | c->Copy = req->Copy; | |
527 | pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy); | |
528 | } | |
529 | if (req->Present & PRESENT_OPTION) { | |
530 | if (s->functions == 1) { | |
531 | c->Option = req->ConfigIndex & COR_CONFIG_MASK; | |
532 | } else { | |
533 | c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK; | |
534 | c->Option |= COR_FUNC_ENA|COR_IREQ_ENA; | |
535 | if (req->Present & PRESENT_IOBASE_0) | |
536 | c->Option |= COR_ADDR_DECODE; | |
537 | } | |
538 | if (c->state & CONFIG_IRQ_REQ) | |
539 | if (!(c->irq.Attributes & IRQ_FORCED_PULSE)) | |
540 | c->Option |= COR_LEVEL_REQ; | |
541 | pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option); | |
542 | mdelay(40); | |
543 | } | |
544 | if (req->Present & PRESENT_STATUS) { | |
545 | c->Status = req->Status; | |
546 | pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status); | |
547 | } | |
548 | if (req->Present & PRESENT_PIN_REPLACE) { | |
549 | c->Pin = req->Pin; | |
550 | pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin); | |
551 | } | |
552 | if (req->Present & PRESENT_EXT_STATUS) { | |
553 | c->ExtStatus = req->ExtStatus; | |
554 | pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus); | |
555 | } | |
556 | if (req->Present & PRESENT_IOBASE_0) { | |
557 | u_char b = c->io.BasePort1 & 0xff; | |
558 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); | |
559 | b = (c->io.BasePort1 >> 8) & 0xff; | |
560 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); | |
561 | } | |
562 | if (req->Present & PRESENT_IOSIZE) { | |
563 | u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1; | |
564 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); | |
565 | } | |
566 | ||
567 | /* Configure I/O windows */ | |
568 | if (c->state & CONFIG_IO_REQ) { | |
8533ee31 | 569 | mutex_lock(&s->ops_mutex); |
1a8d4663 DB |
570 | iomap.speed = io_speed; |
571 | for (i = 0; i < MAX_IO_WIN; i++) | |
c7d00693 | 572 | if (s->io[i].res) { |
1a8d4663 DB |
573 | iomap.map = i; |
574 | iomap.flags = MAP_ACTIVE; | |
c7d00693 | 575 | switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) { |
1a8d4663 DB |
576 | case IO_DATA_PATH_WIDTH_16: |
577 | iomap.flags |= MAP_16BIT; break; | |
578 | case IO_DATA_PATH_WIDTH_AUTO: | |
579 | iomap.flags |= MAP_AUTOSZ; break; | |
580 | default: | |
581 | break; | |
582 | } | |
c7d00693 DB |
583 | iomap.start = s->io[i].res->start; |
584 | iomap.stop = s->io[i].res->end; | |
1a8d4663 DB |
585 | s->ops->set_io_map(s, &iomap); |
586 | s->io[i].Config++; | |
587 | } | |
8533ee31 | 588 | mutex_unlock(&s->ops_mutex); |
1a8d4663 DB |
589 | } |
590 | ||
591 | c->state |= CONFIG_LOCKED; | |
e2d40963 | 592 | p_dev->_locked = 1; |
4c89e88b | 593 | return 0; |
1a8d4663 DB |
594 | } /* pcmcia_request_configuration */ |
595 | EXPORT_SYMBOL(pcmcia_request_configuration); | |
596 | ||
597 | ||
598 | /** pcmcia_request_io | |
599 | * | |
600 | * Request_io() reserves ranges of port addresses for a socket. | |
601 | * I have not implemented range sharing or alias addressing. | |
602 | */ | |
2bc5a9bd | 603 | int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 604 | { |
2bc5a9bd | 605 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
606 | config_t *c; |
607 | ||
6d9a299f DB |
608 | if (!(s->state & SOCKET_PRESENT)) { |
609 | dev_dbg(&s->dev, "No card present\n"); | |
3939c1ef | 610 | return -ENODEV; |
6d9a299f | 611 | } |
1a8d4663 | 612 | |
1a8d4663 | 613 | if (!req) |
de6405e9 | 614 | return -EINVAL; |
dbb22f0d | 615 | c = p_dev->function_config; |
6d9a299f DB |
616 | if (c->state & CONFIG_LOCKED) { |
617 | dev_dbg(&s->dev, "Configuration is locked\n"); | |
943f70f1 | 618 | return -EACCES; |
6d9a299f | 619 | } |
f958095e | 620 | if (c->state & CONFIG_IO_REQ) { |
d50dbec3 | 621 | dev_dbg(&s->dev, "IO already configured\n"); |
f958095e DB |
622 | return -EBUSY; |
623 | } | |
610e2374 | 624 | if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) { |
d50dbec3 | 625 | dev_dbg(&s->dev, "bad attribute setting for IO region 1\n"); |
610e2374 DB |
626 | return -EINVAL; |
627 | } | |
1a8d4663 | 628 | if ((req->NumPorts2 > 0) && |
610e2374 | 629 | (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) { |
d50dbec3 | 630 | dev_dbg(&s->dev, "bad attribute setting for IO region 2\n"); |
610e2374 DB |
631 | return -EINVAL; |
632 | } | |
1a8d4663 | 633 | |
8533ee31 | 634 | mutex_lock(&s->ops_mutex); |
d50dbec3 | 635 | dev_dbg(&s->dev, "trying to allocate resource 1\n"); |
1a8d4663 | 636 | if (alloc_io_space(s, req->Attributes1, &req->BasePort1, |
f958095e | 637 | req->NumPorts1, req->IOAddrLines)) { |
d50dbec3 | 638 | dev_dbg(&s->dev, "allocation of resource 1 failed\n"); |
8533ee31 | 639 | mutex_unlock(&s->ops_mutex); |
f958095e DB |
640 | return -EBUSY; |
641 | } | |
1a8d4663 DB |
642 | |
643 | if (req->NumPorts2) { | |
d50dbec3 | 644 | dev_dbg(&s->dev, "trying to allocate resource 2\n"); |
1a8d4663 DB |
645 | if (alloc_io_space(s, req->Attributes2, &req->BasePort2, |
646 | req->NumPorts2, req->IOAddrLines)) { | |
d50dbec3 | 647 | dev_dbg(&s->dev, "allocation of resource 2 failed\n"); |
1a8d4663 | 648 | release_io_space(s, req->BasePort1, req->NumPorts1); |
8533ee31 | 649 | mutex_unlock(&s->ops_mutex); |
f958095e | 650 | return -EBUSY; |
1a8d4663 DB |
651 | } |
652 | } | |
8533ee31 | 653 | mutex_unlock(&s->ops_mutex); |
1a8d4663 DB |
654 | |
655 | c->io = *req; | |
656 | c->state |= CONFIG_IO_REQ; | |
e2d40963 | 657 | p_dev->_io = 1; |
4c89e88b | 658 | return 0; |
1a8d4663 DB |
659 | } /* pcmcia_request_io */ |
660 | EXPORT_SYMBOL(pcmcia_request_io); | |
661 | ||
662 | ||
663 | /** pcmcia_request_irq | |
664 | * | |
665 | * Request_irq() reserves an irq for this client. | |
666 | * | |
667 | * Also, since Linux only reserves irq's when they are actually | |
668 | * hooked, we don't guarantee that an irq will still be available | |
669 | * when the configuration is locked. Now that I think about it, | |
670 | * there might be a way to fix this using a dummy handler. | |
671 | */ | |
672 | ||
673 | #ifdef CONFIG_PCMCIA_PROBE | |
7d12e780 | 674 | static irqreturn_t test_action(int cpl, void *dev_id) |
1a8d4663 DB |
675 | { |
676 | return IRQ_NONE; | |
677 | } | |
678 | #endif | |
679 | ||
2bc5a9bd | 680 | int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 681 | { |
2bc5a9bd | 682 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 | 683 | config_t *c; |
f958095e | 684 | int ret = -EINVAL, irq = 0; |
c533120b | 685 | int type; |
1a8d4663 | 686 | |
6d9a299f DB |
687 | if (!(s->state & SOCKET_PRESENT)) { |
688 | dev_dbg(&s->dev, "No card present\n"); | |
3939c1ef | 689 | return -ENODEV; |
6d9a299f | 690 | } |
dbb22f0d | 691 | c = p_dev->function_config; |
6d9a299f DB |
692 | if (c->state & CONFIG_LOCKED) { |
693 | dev_dbg(&s->dev, "Configuration is locked\n"); | |
943f70f1 | 694 | return -EACCES; |
6d9a299f | 695 | } |
f958095e | 696 | if (c->state & CONFIG_IRQ_REQ) { |
d50dbec3 | 697 | dev_dbg(&s->dev, "IRQ already configured\n"); |
f958095e DB |
698 | return -EBUSY; |
699 | } | |
1a8d4663 | 700 | |
c533120b AC |
701 | /* Decide what type of interrupt we are registering */ |
702 | type = 0; | |
703 | if (s->functions > 1) /* All of this ought to be handled higher up */ | |
dace1453 | 704 | type = IRQF_SHARED; |
7bbfd39b | 705 | else if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) |
dace1453 | 706 | type = IRQF_SHARED; |
9fea84f4 DB |
707 | else |
708 | printk(KERN_WARNING "pcmcia: Driver needs updating to support IRQ sharing.\n"); | |
c533120b | 709 | |
1a8d4663 | 710 | #ifdef CONFIG_PCMCIA_PROBE |
635416ef AC |
711 | |
712 | #ifdef IRQ_NOAUTOEN | |
713 | /* if the underlying IRQ infrastructure allows for it, only allocate | |
714 | * the IRQ, but do not enable it | |
715 | */ | |
5fa9167a | 716 | if (!(req->Handler)) |
635416ef AC |
717 | type |= IRQ_NOAUTOEN; |
718 | #endif /* IRQ_NOAUTOEN */ | |
719 | ||
1a8d4663 DB |
720 | if (s->irq.AssignedIRQ != 0) { |
721 | /* If the interrupt is already assigned, it must be the same */ | |
722 | irq = s->irq.AssignedIRQ; | |
723 | } else { | |
724 | int try; | |
725 | u32 mask = s->irq_mask; | |
5fa9167a | 726 | void *data = p_dev; /* something unique to this device */ |
1a8d4663 DB |
727 | |
728 | for (try = 0; try < 64; try++) { | |
729 | irq = try % 32; | |
730 | ||
731 | /* marked as available by driver, and not blocked by userspace? */ | |
732 | if (!((mask >> irq) & 1)) | |
733 | continue; | |
734 | ||
735 | /* avoid an IRQ which is already used by a PCMCIA card */ | |
736 | if ((try < 32) && pcmcia_used_irq[irq]) | |
737 | continue; | |
738 | ||
739 | /* register the correct driver, if possible, of check whether | |
740 | * registering a dummy handle works, i.e. if the IRQ isn't | |
741 | * marked as used by the kernel resource management core */ | |
742 | ret = request_irq(irq, | |
5fa9167a | 743 | (req->Handler) ? req->Handler : test_action, |
c533120b | 744 | type, |
bd65a685 | 745 | p_dev->devname, |
5fa9167a | 746 | (req->Handler) ? p_dev->priv : data); |
1a8d4663 | 747 | if (!ret) { |
5fa9167a | 748 | if (!req->Handler) |
1a8d4663 DB |
749 | free_irq(irq, data); |
750 | break; | |
751 | } | |
752 | } | |
753 | } | |
754 | #endif | |
c181e0e0 DR |
755 | /* only assign PCI irq if no IRQ already assigned */ |
756 | if (ret && !s->irq.AssignedIRQ) { | |
6d9a299f DB |
757 | if (!s->pci_irq) { |
758 | dev_printk(KERN_INFO, &s->dev, "no IRQ found\n"); | |
1a8d4663 | 759 | return ret; |
6d9a299f | 760 | } |
dace1453 | 761 | type = IRQF_SHARED; |
1a8d4663 DB |
762 | irq = s->pci_irq; |
763 | } | |
764 | ||
5fa9167a | 765 | if (ret && req->Handler) { |
f958095e | 766 | ret = request_irq(irq, req->Handler, type, |
5fa9167a | 767 | p_dev->devname, p_dev->priv); |
6d9a299f DB |
768 | if (ret) { |
769 | dev_printk(KERN_INFO, &s->dev, | |
770 | "request_irq() failed\n"); | |
f958095e | 771 | return ret; |
6d9a299f | 772 | } |
1a8d4663 DB |
773 | } |
774 | ||
c533120b | 775 | /* Make sure the fact the request type was overridden is passed back */ |
dace1453 | 776 | if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) { |
c533120b | 777 | req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING; |
ac449d6e DB |
778 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: " |
779 | "request for exclusive IRQ could not be fulfilled.\n"); | |
780 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver " | |
781 | "needs updating to supported shared IRQ lines.\n"); | |
c533120b | 782 | } |
1a8d4663 DB |
783 | c->irq.Attributes = req->Attributes; |
784 | s->irq.AssignedIRQ = req->AssignedIRQ = irq; | |
785 | s->irq.Config++; | |
786 | ||
787 | c->state |= CONFIG_IRQ_REQ; | |
e2d40963 | 788 | p_dev->_irq = 1; |
1a8d4663 DB |
789 | |
790 | #ifdef CONFIG_PCMCIA_PROBE | |
791 | pcmcia_used_irq[irq]++; | |
792 | #endif | |
793 | ||
4c89e88b | 794 | return 0; |
1a8d4663 DB |
795 | } /* pcmcia_request_irq */ |
796 | EXPORT_SYMBOL(pcmcia_request_irq); | |
797 | ||
798 | ||
799 | /** pcmcia_request_window | |
800 | * | |
801 | * Request_window() establishes a mapping between card memory space | |
802 | * and system memory space. | |
803 | */ | |
6838b03f | 804 | int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_handle_t *wh) |
1a8d4663 | 805 | { |
6838b03f | 806 | struct pcmcia_socket *s = p_dev->socket; |
82f88e36 | 807 | pccard_mem_map *win; |
1a8d4663 DB |
808 | u_long align; |
809 | int w; | |
810 | ||
6d9a299f DB |
811 | if (!(s->state & SOCKET_PRESENT)) { |
812 | dev_dbg(&s->dev, "No card present\n"); | |
3939c1ef | 813 | return -ENODEV; |
6d9a299f | 814 | } |
610e2374 | 815 | if (req->Attributes & (WIN_PAGED | WIN_SHARED)) { |
d50dbec3 | 816 | dev_dbg(&s->dev, "bad attribute setting for iomem region\n"); |
610e2374 DB |
817 | return -EINVAL; |
818 | } | |
1a8d4663 DB |
819 | |
820 | /* Window size defaults to smallest available */ | |
821 | if (req->Size == 0) | |
822 | req->Size = s->map_size; | |
823 | align = (((s->features & SS_CAP_MEM_ALIGN) || | |
824 | (req->Attributes & WIN_STRICT_ALIGN)) ? | |
825 | req->Size : s->map_size); | |
69ba4433 | 826 | if (req->Size & (s->map_size-1)) { |
d50dbec3 | 827 | dev_dbg(&s->dev, "invalid map size\n"); |
69ba4433 DB |
828 | return -EINVAL; |
829 | } | |
1a8d4663 | 830 | if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) || |
69ba4433 | 831 | (req->Base & (align-1))) { |
d50dbec3 | 832 | dev_dbg(&s->dev, "invalid base address\n"); |
69ba4433 DB |
833 | return -EINVAL; |
834 | } | |
1a8d4663 DB |
835 | if (req->Base) |
836 | align = 0; | |
837 | ||
838 | /* Allocate system memory window */ | |
839 | for (w = 0; w < MAX_WIN; w++) | |
9fea84f4 DB |
840 | if (!(s->state & SOCKET_WIN_REQ(w))) |
841 | break; | |
f958095e | 842 | if (w == MAX_WIN) { |
d50dbec3 | 843 | dev_dbg(&s->dev, "all windows are used already\n"); |
f958095e DB |
844 | return -EINVAL; |
845 | } | |
1a8d4663 | 846 | |
6b8e087b | 847 | mutex_lock(&s->ops_mutex); |
1a8d4663 | 848 | win = &s->win[w]; |
1a8d4663 DB |
849 | |
850 | if (!(s->features & SS_CAP_STATIC_MAP)) { | |
82f88e36 | 851 | win->res = pcmcia_find_mem_region(req->Base, req->Size, align, |
1a8d4663 | 852 | (req->Attributes & WIN_MAP_BELOW_1MB), s); |
82f88e36 | 853 | if (!win->res) { |
d50dbec3 | 854 | dev_dbg(&s->dev, "allocating mem region failed\n"); |
6b8e087b | 855 | mutex_unlock(&s->ops_mutex); |
f958095e DB |
856 | return -EINVAL; |
857 | } | |
1a8d4663 | 858 | } |
6838b03f | 859 | p_dev->_win |= CLIENT_WIN_REQ(w); |
1a8d4663 DB |
860 | |
861 | /* Configure the socket controller */ | |
82f88e36 DB |
862 | win->map = w+1; |
863 | win->flags = 0; | |
864 | win->speed = req->AccessSpeed; | |
1a8d4663 | 865 | if (req->Attributes & WIN_MEMORY_TYPE) |
82f88e36 | 866 | win->flags |= MAP_ATTRIB; |
1a8d4663 | 867 | if (req->Attributes & WIN_ENABLE) |
82f88e36 | 868 | win->flags |= MAP_ACTIVE; |
1a8d4663 | 869 | if (req->Attributes & WIN_DATA_WIDTH_16) |
82f88e36 | 870 | win->flags |= MAP_16BIT; |
1a8d4663 | 871 | if (req->Attributes & WIN_USE_WAIT) |
82f88e36 DB |
872 | win->flags |= MAP_USE_WAIT; |
873 | win->card_start = 0; | |
6b8e087b | 874 | |
82f88e36 | 875 | if (s->ops->set_mem_map(s, win) != 0) { |
d50dbec3 | 876 | dev_dbg(&s->dev, "failed to set memory mapping\n"); |
6b8e087b | 877 | mutex_unlock(&s->ops_mutex); |
926c5402 DB |
878 | return -EIO; |
879 | } | |
1a8d4663 DB |
880 | s->state |= SOCKET_WIN_REQ(w); |
881 | ||
882 | /* Return window handle */ | |
9fea84f4 | 883 | if (s->features & SS_CAP_STATIC_MAP) |
82f88e36 | 884 | req->Base = win->static_start; |
9fea84f4 | 885 | else |
82f88e36 | 886 | req->Base = win->res->start; |
9fea84f4 | 887 | |
6b8e087b | 888 | mutex_unlock(&s->ops_mutex); |
0bdf9b3d | 889 | *wh = w + 1; |
1a8d4663 | 890 | |
4c89e88b | 891 | return 0; |
1a8d4663 DB |
892 | } /* pcmcia_request_window */ |
893 | EXPORT_SYMBOL(pcmcia_request_window); | |
5f2a71fc | 894 | |
9fea84f4 DB |
895 | void pcmcia_disable_device(struct pcmcia_device *p_dev) |
896 | { | |
5f2a71fc | 897 | pcmcia_release_configuration(p_dev); |
fd238232 DB |
898 | pcmcia_release_io(p_dev, &p_dev->io); |
899 | pcmcia_release_irq(p_dev, &p_dev->irq); | |
c1ac0228 | 900 | if (p_dev->win) |
f5560da5 | 901 | pcmcia_release_window(p_dev, p_dev->win); |
5f2a71fc DB |
902 | } |
903 | EXPORT_SYMBOL(pcmcia_disable_device); | |
a804b574 DB |
904 | |
905 | ||
906 | struct pcmcia_cfg_mem { | |
91284224 DB |
907 | struct pcmcia_device *p_dev; |
908 | void *priv_data; | |
909 | int (*conf_check) (struct pcmcia_device *p_dev, | |
910 | cistpl_cftable_entry_t *cfg, | |
911 | cistpl_cftable_entry_t *dflt, | |
912 | unsigned int vcc, | |
913 | void *priv_data); | |
a804b574 | 914 | cisparse_t parse; |
8e2fc39d | 915 | cistpl_cftable_entry_t dflt; |
a804b574 DB |
916 | }; |
917 | ||
91284224 DB |
918 | /** |
919 | * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config() | |
920 | * | |
921 | * pcmcia_do_loop_config() is the internal callback for the call from | |
922 | * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred | |
923 | * by a struct pcmcia_cfg_mem. | |
924 | */ | |
925 | static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv) | |
926 | { | |
927 | cistpl_cftable_entry_t *cfg = &parse->cftable_entry; | |
928 | struct pcmcia_cfg_mem *cfg_mem = priv; | |
929 | ||
930 | /* default values */ | |
931 | cfg_mem->p_dev->conf.ConfigIndex = cfg->index; | |
932 | if (cfg->flags & CISTPL_CFTABLE_DEFAULT) | |
933 | cfg_mem->dflt = *cfg; | |
934 | ||
935 | return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt, | |
936 | cfg_mem->p_dev->socket->socket.Vcc, | |
937 | cfg_mem->priv_data); | |
938 | } | |
939 | ||
a804b574 DB |
940 | /** |
941 | * pcmcia_loop_config() - loop over configuration options | |
942 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
943 | * @conf_check: function to call for each configuration option. | |
944 | * It gets passed the struct pcmcia_device, the CIS data | |
945 | * describing the configuration option, and private data | |
946 | * being passed to pcmcia_loop_config() | |
947 | * @priv_data: private data to be passed to the conf_check function. | |
948 | * | |
949 | * pcmcia_loop_config() loops over all configuration options, and calls | |
950 | * the driver-specific conf_check() for each one, checking whether | |
889c2774 | 951 | * it is a valid one. Returns 0 on success or errorcode otherwise. |
a804b574 DB |
952 | */ |
953 | int pcmcia_loop_config(struct pcmcia_device *p_dev, | |
954 | int (*conf_check) (struct pcmcia_device *p_dev, | |
955 | cistpl_cftable_entry_t *cfg, | |
8e2fc39d | 956 | cistpl_cftable_entry_t *dflt, |
ad913c11 | 957 | unsigned int vcc, |
a804b574 DB |
958 | void *priv_data), |
959 | void *priv_data) | |
960 | { | |
961 | struct pcmcia_cfg_mem *cfg_mem; | |
889c2774 | 962 | int ret; |
a804b574 DB |
963 | |
964 | cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL); | |
965 | if (cfg_mem == NULL) | |
966 | return -ENOMEM; | |
967 | ||
91284224 DB |
968 | cfg_mem->p_dev = p_dev; |
969 | cfg_mem->conf_check = conf_check; | |
970 | cfg_mem->priv_data = priv_data; | |
ad913c11 | 971 | |
91284224 DB |
972 | ret = pccard_loop_tuple(p_dev->socket, p_dev->func, |
973 | CISTPL_CFTABLE_ENTRY, &cfg_mem->parse, | |
974 | cfg_mem, pcmcia_do_loop_config); | |
a804b574 | 975 | |
91284224 DB |
976 | kfree(cfg_mem); |
977 | return ret; | |
978 | } | |
979 | EXPORT_SYMBOL(pcmcia_loop_config); | |
498ac189 | 980 | |
a804b574 | 981 | |
91284224 DB |
982 | struct pcmcia_loop_mem { |
983 | struct pcmcia_device *p_dev; | |
984 | void *priv_data; | |
985 | int (*loop_tuple) (struct pcmcia_device *p_dev, | |
986 | tuple_t *tuple, | |
987 | void *priv_data); | |
988 | }; | |
a804b574 | 989 | |
91284224 DB |
990 | /** |
991 | * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config() | |
992 | * | |
993 | * pcmcia_do_loop_tuple() is the internal callback for the call from | |
994 | * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred | |
995 | * by a struct pcmcia_cfg_mem. | |
996 | */ | |
997 | static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv) | |
998 | { | |
999 | struct pcmcia_loop_mem *loop = priv; | |
498ac189 | 1000 | |
91284224 DB |
1001 | return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data); |
1002 | }; | |
1003 | ||
1004 | /** | |
1005 | * pcmcia_loop_tuple() - loop over tuples in the CIS | |
1006 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
1007 | * @code: which CIS code shall we look for? | |
1008 | * @priv_data: private data to be passed to the loop_tuple function. | |
1009 | * @loop_tuple: function to call for each CIS entry of type @function. IT | |
1010 | * gets passed the raw tuple and @priv_data. | |
1011 | * | |
1012 | * pcmcia_loop_tuple() loops over all CIS entries of type @function, and | |
1013 | * calls the @loop_tuple function for each entry. If the call to @loop_tuple | |
1014 | * returns 0, the loop exits. Returns 0 on success or errorcode otherwise. | |
1015 | */ | |
1016 | int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code, | |
1017 | int (*loop_tuple) (struct pcmcia_device *p_dev, | |
1018 | tuple_t *tuple, | |
1019 | void *priv_data), | |
1020 | void *priv_data) | |
1021 | { | |
1022 | struct pcmcia_loop_mem loop = { | |
1023 | .p_dev = p_dev, | |
1024 | .loop_tuple = loop_tuple, | |
1025 | .priv_data = priv_data}; | |
1026 | ||
1027 | return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL, | |
1028 | &loop, pcmcia_do_loop_tuple); | |
9fea84f4 | 1029 | } |
91284224 | 1030 | EXPORT_SYMBOL(pcmcia_loop_tuple); |
a804b574 | 1031 | |
91284224 DB |
1032 | |
1033 | struct pcmcia_loop_get { | |
1034 | size_t len; | |
1035 | cisdata_t **buf; | |
1036 | }; | |
1037 | ||
1038 | /** | |
1039 | * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple() | |
1040 | * | |
1041 | * pcmcia_do_get_tuple() is the internal callback for the call from | |
1042 | * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in | |
1043 | * the first tuple, return 0 unconditionally. Create a memory buffer large | |
1044 | * enough to hold the content of the tuple, and fill it with the tuple data. | |
1045 | * The caller is responsible to free the buffer. | |
1046 | */ | |
1047 | static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple, | |
1048 | void *priv) | |
1049 | { | |
1050 | struct pcmcia_loop_get *get = priv; | |
1051 | ||
1052 | *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL); | |
1053 | if (*get->buf) { | |
1054 | get->len = tuple->TupleDataLen; | |
1055 | memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen); | |
6d9a299f DB |
1056 | } else |
1057 | dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n"); | |
91284224 | 1058 | return 0; |
9fea84f4 | 1059 | } |
91284224 DB |
1060 | |
1061 | /** | |
1062 | * pcmcia_get_tuple() - get first tuple from CIS | |
1063 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
1064 | * @code: which CIS code shall we look for? | |
1065 | * @buf: pointer to store the buffer to. | |
1066 | * | |
1067 | * pcmcia_get_tuple() gets the content of the first CIS entry of type @code. | |
1068 | * It returns the buffer length (or zero). The caller is responsible to free | |
1069 | * the buffer passed in @buf. | |
1070 | */ | |
1071 | size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code, | |
1072 | unsigned char **buf) | |
1073 | { | |
1074 | struct pcmcia_loop_get get = { | |
1075 | .len = 0, | |
1076 | .buf = buf, | |
1077 | }; | |
1078 | ||
1079 | *get.buf = NULL; | |
1080 | pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get); | |
1081 | ||
1082 | return get.len; | |
9fea84f4 | 1083 | } |
91284224 DB |
1084 | EXPORT_SYMBOL(pcmcia_get_tuple); |
1085 | ||
1086 | ||
1087 | /** | |
1088 | * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis() | |
1089 | * | |
1090 | * pcmcia_do_get_mac() is the internal callback for the call from | |
1091 | * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the | |
1092 | * tuple contains a proper LAN_NODE_ID of length 6, and copy the data | |
1093 | * to struct net_device->dev_addr[i]. | |
1094 | */ | |
1095 | static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple, | |
1096 | void *priv) | |
1097 | { | |
1098 | struct net_device *dev = priv; | |
1099 | int i; | |
1100 | ||
1101 | if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID) | |
1102 | return -EINVAL; | |
1103 | if (tuple->TupleDataLen < ETH_ALEN + 2) { | |
1104 | dev_warn(&p_dev->dev, "Invalid CIS tuple length for " | |
1105 | "LAN_NODE_ID\n"); | |
1106 | return -EINVAL; | |
1107 | } | |
1108 | ||
1109 | if (tuple->TupleData[1] != ETH_ALEN) { | |
1110 | dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n"); | |
1111 | return -EINVAL; | |
1112 | } | |
1113 | for (i = 0; i < 6; i++) | |
1114 | dev->dev_addr[i] = tuple->TupleData[i+2]; | |
1115 | return 0; | |
9fea84f4 | 1116 | } |
91284224 DB |
1117 | |
1118 | /** | |
1119 | * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE | |
1120 | * @p_dev: the struct pcmcia_device for which we want the address. | |
1121 | * @dev: a properly prepared struct net_device to store the info to. | |
1122 | * | |
1123 | * pcmcia_get_mac_from_cis() reads out the hardware MAC address from | |
1124 | * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which | |
1125 | * must be set up properly by the driver (see examples!). | |
1126 | */ | |
1127 | int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev) | |
1128 | { | |
1129 | return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev); | |
9fea84f4 | 1130 | } |
91284224 | 1131 | EXPORT_SYMBOL(pcmcia_get_mac_from_cis); |
a804b574 | 1132 |