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 DB |
161 | |
162 | if (!(c->state & CONFIG_LOCKED)) | |
943f70f1 | 163 | return -EACCES; |
1a8d4663 DB |
164 | |
165 | addr = (c->ConfigBase + reg->Offset) >> 1; | |
166 | ||
167 | switch (reg->Action) { | |
168 | case CS_READ: | |
169 | pcmcia_read_cis_mem(s, 1, addr, 1, &val); | |
170 | reg->Value = val; | |
171 | break; | |
172 | case CS_WRITE: | |
173 | val = reg->Value; | |
174 | pcmcia_write_cis_mem(s, 1, addr, 1, &val); | |
175 | break; | |
176 | default: | |
926c5402 | 177 | return -EINVAL; |
1a8d4663 DB |
178 | break; |
179 | } | |
4c89e88b | 180 | return 0; |
855cdf13 | 181 | } /* pcmcia_access_configuration_register */ |
3448139b DB |
182 | EXPORT_SYMBOL(pcmcia_access_configuration_register); |
183 | ||
1a8d4663 | 184 | |
1a8d4663 DB |
185 | /** pcmcia_get_window |
186 | */ | |
187 | int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle, | |
188 | int idx, win_req_t *req) | |
189 | { | |
190 | window_t *win; | |
191 | int w; | |
192 | ||
193 | if (!s || !(s->state & SOCKET_PRESENT)) | |
3939c1ef | 194 | return -ENODEV; |
1a8d4663 DB |
195 | for (w = idx; w < MAX_WIN; w++) |
196 | if (s->state & SOCKET_WIN_REQ(w)) | |
197 | break; | |
198 | if (w == MAX_WIN) | |
635d19be | 199 | return -EINVAL; |
1a8d4663 DB |
200 | win = &s->win[w]; |
201 | req->Base = win->ctl.res->start; | |
202 | req->Size = win->ctl.res->end - win->ctl.res->start + 1; | |
203 | req->AccessSpeed = win->ctl.speed; | |
204 | req->Attributes = 0; | |
205 | if (win->ctl.flags & MAP_ATTRIB) | |
206 | req->Attributes |= WIN_MEMORY_TYPE_AM; | |
207 | if (win->ctl.flags & MAP_ACTIVE) | |
208 | req->Attributes |= WIN_ENABLE; | |
209 | if (win->ctl.flags & MAP_16BIT) | |
210 | req->Attributes |= WIN_DATA_WIDTH_16; | |
211 | if (win->ctl.flags & MAP_USE_WAIT) | |
212 | req->Attributes |= WIN_USE_WAIT; | |
213 | *handle = win; | |
4c89e88b | 214 | return 0; |
1a8d4663 DB |
215 | } /* pcmcia_get_window */ |
216 | EXPORT_SYMBOL(pcmcia_get_window); | |
217 | ||
218 | ||
1a8d4663 DB |
219 | /** pcmcia_get_mem_page |
220 | * | |
221 | * Change the card address of an already open memory window. | |
222 | */ | |
223 | int pcmcia_get_mem_page(window_handle_t win, memreq_t *req) | |
224 | { | |
225 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
ffb8da20 | 226 | return -EINVAL; |
1a8d4663 DB |
227 | req->Page = 0; |
228 | req->CardOffset = win->ctl.card_start; | |
4c89e88b | 229 | return 0; |
1a8d4663 DB |
230 | } /* pcmcia_get_mem_page */ |
231 | EXPORT_SYMBOL(pcmcia_get_mem_page); | |
232 | ||
233 | ||
234 | int pcmcia_map_mem_page(window_handle_t win, memreq_t *req) | |
235 | { | |
236 | struct pcmcia_socket *s; | |
237 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
ffb8da20 | 238 | return -EINVAL; |
1a8d4663 | 239 | s = win->sock; |
610e2374 | 240 | if (req->Page != 0) { |
d50dbec3 | 241 | dev_dbg(&s->dev, "failure: requested page is zero\n"); |
610e2374 DB |
242 | return -EINVAL; |
243 | } | |
1a8d4663 | 244 | win->ctl.card_start = req->CardOffset; |
69ba4433 | 245 | if (s->ops->set_mem_map(s, &win->ctl) != 0) { |
d50dbec3 | 246 | dev_dbg(&s->dev, "failed to set_mem_map\n"); |
69ba4433 DB |
247 | return -EIO; |
248 | } | |
4c89e88b | 249 | return 0; |
1a8d4663 DB |
250 | } /* pcmcia_map_mem_page */ |
251 | EXPORT_SYMBOL(pcmcia_map_mem_page); | |
252 | ||
253 | ||
254 | /** pcmcia_modify_configuration | |
255 | * | |
256 | * Modify a locked socket configuration | |
257 | */ | |
2bc5a9bd | 258 | int pcmcia_modify_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
259 | modconf_t *mod) |
260 | { | |
261 | struct pcmcia_socket *s; | |
262 | config_t *c; | |
263 | ||
2bc5a9bd | 264 | s = p_dev->socket; |
dbb22f0d DB |
265 | c = p_dev->function_config; |
266 | ||
1a8d4663 | 267 | if (!(s->state & SOCKET_PRESENT)) |
3939c1ef | 268 | return -ENODEV; |
1a8d4663 | 269 | if (!(c->state & CONFIG_LOCKED)) |
943f70f1 | 270 | return -EACCES; |
1a8d4663 DB |
271 | |
272 | if (mod->Attributes & CONF_IRQ_CHANGE_VALID) { | |
273 | if (mod->Attributes & CONF_ENABLE_IRQ) { | |
274 | c->Attributes |= CONF_ENABLE_IRQ; | |
275 | s->socket.io_irq = s->irq.AssignedIRQ; | |
276 | } else { | |
277 | c->Attributes &= ~CONF_ENABLE_IRQ; | |
278 | s->socket.io_irq = 0; | |
279 | } | |
280 | s->ops->set_socket(s, &s->socket); | |
281 | } | |
282 | ||
d8b0a49d | 283 | if (mod->Attributes & CONF_VCC_CHANGE_VALID) { |
d50dbec3 | 284 | dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n"); |
d8b0a49d DB |
285 | return -EINVAL; |
286 | } | |
1a8d4663 DB |
287 | |
288 | /* We only allow changing Vpp1 and Vpp2 to the same value */ | |
289 | if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) && | |
290 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { | |
60df3de8 | 291 | if (mod->Vpp1 != mod->Vpp2) { |
d50dbec3 | 292 | dev_dbg(&s->dev, "Vpp1 and Vpp2 must be the same\n"); |
d8b0a49d | 293 | return -EINVAL; |
60df3de8 | 294 | } |
71ed90d8 | 295 | s->socket.Vpp = mod->Vpp1; |
d8b0a49d DB |
296 | if (s->ops->set_socket(s, &s->socket)) { |
297 | dev_printk(KERN_WARNING, &s->dev, | |
298 | "Unable to set VPP\n"); | |
299 | return -EIO; | |
300 | } | |
1a8d4663 | 301 | } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || |
d8b0a49d | 302 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { |
d50dbec3 | 303 | dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n"); |
d8b0a49d DB |
304 | return -EINVAL; |
305 | } | |
1a8d4663 | 306 | |
4bbed523 DB |
307 | if (mod->Attributes & CONF_IO_CHANGE_WIDTH) { |
308 | pccard_io_map io_off = { 0, 0, 0, 0, 1 }; | |
309 | pccard_io_map io_on; | |
310 | int i; | |
311 | ||
312 | io_on.speed = io_speed; | |
313 | for (i = 0; i < MAX_IO_WIN; i++) { | |
314 | if (!s->io[i].res) | |
315 | continue; | |
316 | io_off.map = i; | |
317 | io_on.map = i; | |
318 | ||
319 | io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; | |
320 | io_on.start = s->io[i].res->start; | |
321 | io_on.stop = s->io[i].res->end; | |
322 | ||
323 | s->ops->set_io_map(s, &io_off); | |
324 | mdelay(40); | |
325 | s->ops->set_io_map(s, &io_on); | |
326 | } | |
327 | } | |
328 | ||
4c89e88b | 329 | return 0; |
1a8d4663 DB |
330 | } /* modify_configuration */ |
331 | EXPORT_SYMBOL(pcmcia_modify_configuration); | |
332 | ||
333 | ||
2bc5a9bd | 334 | int pcmcia_release_configuration(struct pcmcia_device *p_dev) |
1a8d4663 DB |
335 | { |
336 | pccard_io_map io = { 0, 0, 0, 0, 1 }; | |
2bc5a9bd | 337 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc | 338 | config_t *c = p_dev->function_config; |
1a8d4663 DB |
339 | int i; |
340 | ||
e2d40963 DB |
341 | if (p_dev->_locked) { |
342 | p_dev->_locked = 0; | |
1a8d4663 DB |
343 | if (--(s->lock_count) == 0) { |
344 | s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ | |
345 | s->socket.Vpp = 0; | |
346 | s->socket.io_irq = 0; | |
347 | s->ops->set_socket(s, &s->socket); | |
348 | } | |
5f2a71fc DB |
349 | } |
350 | if (c->state & CONFIG_LOCKED) { | |
351 | c->state &= ~CONFIG_LOCKED; | |
1a8d4663 DB |
352 | if (c->state & CONFIG_IO_REQ) |
353 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 354 | if (!s->io[i].res) |
1a8d4663 DB |
355 | continue; |
356 | s->io[i].Config--; | |
357 | if (s->io[i].Config != 0) | |
358 | continue; | |
359 | io.map = i; | |
360 | s->ops->set_io_map(s, &io); | |
361 | } | |
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 | |
e2d40963 | 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; |
5f2a71fc DB |
405 | config_t *c= p_dev->function_config; |
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 | ||
426 | if (req->Attributes & IRQ_HANDLE_PRESENT) { | |
427 | free_irq(req->AssignedIRQ, req->Instance); | |
428 | } | |
429 | ||
430 | #ifdef CONFIG_PCMCIA_PROBE | |
431 | pcmcia_used_irq[req->AssignedIRQ]--; | |
432 | #endif | |
433 | ||
4c89e88b | 434 | return 0; |
1a8d4663 | 435 | } /* pcmcia_release_irq */ |
1a8d4663 DB |
436 | |
437 | ||
438 | int pcmcia_release_window(window_handle_t win) | |
439 | { | |
440 | struct pcmcia_socket *s; | |
441 | ||
442 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
ffb8da20 | 443 | return -EINVAL; |
1a8d4663 | 444 | s = win->sock; |
e2d40963 | 445 | if (!(win->handle->_win & CLIENT_WIN_REQ(win->index))) |
ffb8da20 | 446 | return -EINVAL; |
1a8d4663 DB |
447 | |
448 | /* Shut down memory window */ | |
449 | win->ctl.flags &= ~MAP_ACTIVE; | |
450 | s->ops->set_mem_map(s, &win->ctl); | |
451 | s->state &= ~SOCKET_WIN_REQ(win->index); | |
452 | ||
453 | /* Release system memory */ | |
454 | if (win->ctl.res) { | |
455 | release_resource(win->ctl.res); | |
456 | kfree(win->ctl.res); | |
457 | win->ctl.res = NULL; | |
458 | } | |
e2d40963 | 459 | win->handle->_win &= ~CLIENT_WIN_REQ(win->index); |
1a8d4663 DB |
460 | |
461 | win->magic = 0; | |
462 | ||
4c89e88b | 463 | return 0; |
1a8d4663 DB |
464 | } /* pcmcia_release_window */ |
465 | EXPORT_SYMBOL(pcmcia_release_window); | |
466 | ||
467 | ||
2bc5a9bd | 468 | int pcmcia_request_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
469 | config_req_t *req) |
470 | { | |
471 | int i; | |
472 | u_int base; | |
2bc5a9bd | 473 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
474 | config_t *c; |
475 | pccard_io_map iomap; | |
476 | ||
1a8d4663 | 477 | if (!(s->state & SOCKET_PRESENT)) |
d598de02 | 478 | return -ENODEV; |
1a8d4663 | 479 | |
de6405e9 | 480 | if (req->IntType & INT_CARDBUS) { |
d50dbec3 | 481 | dev_dbg(&s->dev, "IntType may not be INT_CARDBUS\n"); |
de6405e9 DB |
482 | return -EINVAL; |
483 | } | |
dbb22f0d | 484 | c = p_dev->function_config; |
1a8d4663 | 485 | if (c->state & CONFIG_LOCKED) |
943f70f1 | 486 | return -EACCES; |
1a8d4663 DB |
487 | |
488 | /* Do power control. We don't allow changes in Vcc. */ | |
70294b46 | 489 | s->socket.Vpp = req->Vpp; |
d8b0a49d DB |
490 | if (s->ops->set_socket(s, &s->socket)) { |
491 | dev_printk(KERN_WARNING, &s->dev, | |
492 | "Unable to set socket state\n"); | |
493 | return -EINVAL; | |
494 | } | |
1a8d4663 | 495 | |
1a8d4663 DB |
496 | /* Pick memory or I/O card, DMA mode, interrupt */ |
497 | c->IntType = req->IntType; | |
498 | c->Attributes = req->Attributes; | |
499 | if (req->IntType & INT_MEMORY_AND_IO) | |
500 | s->socket.flags |= SS_IOCARD; | |
501 | if (req->IntType & INT_ZOOMED_VIDEO) | |
502 | s->socket.flags |= SS_ZVCARD | SS_IOCARD; | |
503 | if (req->Attributes & CONF_ENABLE_DMA) | |
504 | s->socket.flags |= SS_DMA_MODE; | |
505 | if (req->Attributes & CONF_ENABLE_SPKR) | |
506 | s->socket.flags |= SS_SPKR_ENA; | |
507 | if (req->Attributes & CONF_ENABLE_IRQ) | |
508 | s->socket.io_irq = s->irq.AssignedIRQ; | |
509 | else | |
510 | s->socket.io_irq = 0; | |
511 | s->ops->set_socket(s, &s->socket); | |
512 | s->lock_count++; | |
513 | ||
514 | /* Set up CIS configuration registers */ | |
515 | base = c->ConfigBase = req->ConfigBase; | |
1ae9c7d8 | 516 | c->CardValues = req->Present; |
1a8d4663 DB |
517 | if (req->Present & PRESENT_COPY) { |
518 | c->Copy = req->Copy; | |
519 | pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy); | |
520 | } | |
521 | if (req->Present & PRESENT_OPTION) { | |
522 | if (s->functions == 1) { | |
523 | c->Option = req->ConfigIndex & COR_CONFIG_MASK; | |
524 | } else { | |
525 | c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK; | |
526 | c->Option |= COR_FUNC_ENA|COR_IREQ_ENA; | |
527 | if (req->Present & PRESENT_IOBASE_0) | |
528 | c->Option |= COR_ADDR_DECODE; | |
529 | } | |
530 | if (c->state & CONFIG_IRQ_REQ) | |
531 | if (!(c->irq.Attributes & IRQ_FORCED_PULSE)) | |
532 | c->Option |= COR_LEVEL_REQ; | |
533 | pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option); | |
534 | mdelay(40); | |
535 | } | |
536 | if (req->Present & PRESENT_STATUS) { | |
537 | c->Status = req->Status; | |
538 | pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status); | |
539 | } | |
540 | if (req->Present & PRESENT_PIN_REPLACE) { | |
541 | c->Pin = req->Pin; | |
542 | pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin); | |
543 | } | |
544 | if (req->Present & PRESENT_EXT_STATUS) { | |
545 | c->ExtStatus = req->ExtStatus; | |
546 | pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus); | |
547 | } | |
548 | if (req->Present & PRESENT_IOBASE_0) { | |
549 | u_char b = c->io.BasePort1 & 0xff; | |
550 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); | |
551 | b = (c->io.BasePort1 >> 8) & 0xff; | |
552 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); | |
553 | } | |
554 | if (req->Present & PRESENT_IOSIZE) { | |
555 | u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1; | |
556 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); | |
557 | } | |
558 | ||
559 | /* Configure I/O windows */ | |
560 | if (c->state & CONFIG_IO_REQ) { | |
561 | iomap.speed = io_speed; | |
562 | for (i = 0; i < MAX_IO_WIN; i++) | |
c7d00693 | 563 | if (s->io[i].res) { |
1a8d4663 DB |
564 | iomap.map = i; |
565 | iomap.flags = MAP_ACTIVE; | |
c7d00693 | 566 | switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) { |
1a8d4663 DB |
567 | case IO_DATA_PATH_WIDTH_16: |
568 | iomap.flags |= MAP_16BIT; break; | |
569 | case IO_DATA_PATH_WIDTH_AUTO: | |
570 | iomap.flags |= MAP_AUTOSZ; break; | |
571 | default: | |
572 | break; | |
573 | } | |
c7d00693 DB |
574 | iomap.start = s->io[i].res->start; |
575 | iomap.stop = s->io[i].res->end; | |
1a8d4663 DB |
576 | s->ops->set_io_map(s, &iomap); |
577 | s->io[i].Config++; | |
578 | } | |
579 | } | |
580 | ||
581 | c->state |= CONFIG_LOCKED; | |
e2d40963 | 582 | p_dev->_locked = 1; |
4c89e88b | 583 | return 0; |
1a8d4663 DB |
584 | } /* pcmcia_request_configuration */ |
585 | EXPORT_SYMBOL(pcmcia_request_configuration); | |
586 | ||
587 | ||
588 | /** pcmcia_request_io | |
589 | * | |
590 | * Request_io() reserves ranges of port addresses for a socket. | |
591 | * I have not implemented range sharing or alias addressing. | |
592 | */ | |
2bc5a9bd | 593 | int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 594 | { |
2bc5a9bd | 595 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
596 | config_t *c; |
597 | ||
1a8d4663 | 598 | if (!(s->state & SOCKET_PRESENT)) |
3939c1ef | 599 | return -ENODEV; |
1a8d4663 | 600 | |
1a8d4663 | 601 | if (!req) |
de6405e9 | 602 | return -EINVAL; |
dbb22f0d | 603 | c = p_dev->function_config; |
1a8d4663 | 604 | if (c->state & CONFIG_LOCKED) |
943f70f1 | 605 | return -EACCES; |
f958095e | 606 | if (c->state & CONFIG_IO_REQ) { |
d50dbec3 | 607 | dev_dbg(&s->dev, "IO already configured\n"); |
f958095e DB |
608 | return -EBUSY; |
609 | } | |
610e2374 | 610 | if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) { |
d50dbec3 | 611 | dev_dbg(&s->dev, "bad attribute setting for IO region 1\n"); |
610e2374 DB |
612 | return -EINVAL; |
613 | } | |
1a8d4663 | 614 | if ((req->NumPorts2 > 0) && |
610e2374 | 615 | (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) { |
d50dbec3 | 616 | dev_dbg(&s->dev, "bad attribute setting for IO region 2\n"); |
610e2374 DB |
617 | return -EINVAL; |
618 | } | |
1a8d4663 | 619 | |
d50dbec3 | 620 | dev_dbg(&s->dev, "trying to allocate resource 1\n"); |
1a8d4663 | 621 | if (alloc_io_space(s, req->Attributes1, &req->BasePort1, |
f958095e | 622 | req->NumPorts1, req->IOAddrLines)) { |
d50dbec3 | 623 | dev_dbg(&s->dev, "allocation of resource 1 failed\n"); |
f958095e DB |
624 | return -EBUSY; |
625 | } | |
1a8d4663 DB |
626 | |
627 | if (req->NumPorts2) { | |
d50dbec3 | 628 | dev_dbg(&s->dev, "trying to allocate resource 2\n"); |
1a8d4663 DB |
629 | if (alloc_io_space(s, req->Attributes2, &req->BasePort2, |
630 | req->NumPorts2, req->IOAddrLines)) { | |
d50dbec3 | 631 | dev_dbg(&s->dev, "allocation of resource 2 failed\n"); |
1a8d4663 | 632 | release_io_space(s, req->BasePort1, req->NumPorts1); |
f958095e | 633 | return -EBUSY; |
1a8d4663 DB |
634 | } |
635 | } | |
636 | ||
637 | c->io = *req; | |
638 | c->state |= CONFIG_IO_REQ; | |
e2d40963 | 639 | p_dev->_io = 1; |
4c89e88b | 640 | return 0; |
1a8d4663 DB |
641 | } /* pcmcia_request_io */ |
642 | EXPORT_SYMBOL(pcmcia_request_io); | |
643 | ||
644 | ||
645 | /** pcmcia_request_irq | |
646 | * | |
647 | * Request_irq() reserves an irq for this client. | |
648 | * | |
649 | * Also, since Linux only reserves irq's when they are actually | |
650 | * hooked, we don't guarantee that an irq will still be available | |
651 | * when the configuration is locked. Now that I think about it, | |
652 | * there might be a way to fix this using a dummy handler. | |
653 | */ | |
654 | ||
655 | #ifdef CONFIG_PCMCIA_PROBE | |
7d12e780 | 656 | static irqreturn_t test_action(int cpl, void *dev_id) |
1a8d4663 DB |
657 | { |
658 | return IRQ_NONE; | |
659 | } | |
660 | #endif | |
661 | ||
2bc5a9bd | 662 | int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 663 | { |
2bc5a9bd | 664 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 | 665 | config_t *c; |
f958095e | 666 | int ret = -EINVAL, irq = 0; |
c533120b | 667 | int type; |
1a8d4663 | 668 | |
1a8d4663 | 669 | if (!(s->state & SOCKET_PRESENT)) |
3939c1ef | 670 | return -ENODEV; |
dbb22f0d | 671 | c = p_dev->function_config; |
1a8d4663 | 672 | if (c->state & CONFIG_LOCKED) |
943f70f1 | 673 | return -EACCES; |
f958095e | 674 | if (c->state & CONFIG_IRQ_REQ) { |
d50dbec3 | 675 | dev_dbg(&s->dev, "IRQ already configured\n"); |
f958095e DB |
676 | return -EBUSY; |
677 | } | |
1a8d4663 | 678 | |
c533120b AC |
679 | /* Decide what type of interrupt we are registering */ |
680 | type = 0; | |
681 | if (s->functions > 1) /* All of this ought to be handled higher up */ | |
dace1453 | 682 | type = IRQF_SHARED; |
7bbfd39b | 683 | else if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) |
dace1453 | 684 | type = IRQF_SHARED; |
7bbfd39b | 685 | else printk(KERN_WARNING "pcmcia: Driver needs updating to support IRQ sharing.\n"); |
c533120b | 686 | |
1a8d4663 | 687 | #ifdef CONFIG_PCMCIA_PROBE |
635416ef AC |
688 | |
689 | #ifdef IRQ_NOAUTOEN | |
690 | /* if the underlying IRQ infrastructure allows for it, only allocate | |
691 | * the IRQ, but do not enable it | |
692 | */ | |
693 | if (!(req->Attributes & IRQ_HANDLE_PRESENT)) | |
694 | type |= IRQ_NOAUTOEN; | |
695 | #endif /* IRQ_NOAUTOEN */ | |
696 | ||
1a8d4663 DB |
697 | if (s->irq.AssignedIRQ != 0) { |
698 | /* If the interrupt is already assigned, it must be the same */ | |
699 | irq = s->irq.AssignedIRQ; | |
700 | } else { | |
701 | int try; | |
702 | u32 mask = s->irq_mask; | |
a1b274fb | 703 | void *data = &p_dev->dev.driver; /* something unique to this device */ |
1a8d4663 DB |
704 | |
705 | for (try = 0; try < 64; try++) { | |
706 | irq = try % 32; | |
707 | ||
708 | /* marked as available by driver, and not blocked by userspace? */ | |
709 | if (!((mask >> irq) & 1)) | |
710 | continue; | |
711 | ||
712 | /* avoid an IRQ which is already used by a PCMCIA card */ | |
713 | if ((try < 32) && pcmcia_used_irq[irq]) | |
714 | continue; | |
715 | ||
716 | /* register the correct driver, if possible, of check whether | |
717 | * registering a dummy handle works, i.e. if the IRQ isn't | |
718 | * marked as used by the kernel resource management core */ | |
719 | ret = request_irq(irq, | |
720 | (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action, | |
c533120b | 721 | type, |
bd65a685 | 722 | p_dev->devname, |
1a8d4663 DB |
723 | (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data); |
724 | if (!ret) { | |
725 | if (!(req->Attributes & IRQ_HANDLE_PRESENT)) | |
726 | free_irq(irq, data); | |
727 | break; | |
728 | } | |
729 | } | |
730 | } | |
731 | #endif | |
c181e0e0 DR |
732 | /* only assign PCI irq if no IRQ already assigned */ |
733 | if (ret && !s->irq.AssignedIRQ) { | |
1a8d4663 DB |
734 | if (!s->pci_irq) |
735 | return ret; | |
dace1453 | 736 | type = IRQF_SHARED; |
1a8d4663 DB |
737 | irq = s->pci_irq; |
738 | } | |
739 | ||
c533120b | 740 | if (ret && (req->Attributes & IRQ_HANDLE_PRESENT)) { |
f958095e DB |
741 | ret = request_irq(irq, req->Handler, type, |
742 | p_dev->devname, req->Instance); | |
743 | if (ret) | |
744 | return ret; | |
1a8d4663 DB |
745 | } |
746 | ||
c533120b | 747 | /* Make sure the fact the request type was overridden is passed back */ |
dace1453 | 748 | if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) { |
c533120b | 749 | req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING; |
ac449d6e DB |
750 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: " |
751 | "request for exclusive IRQ could not be fulfilled.\n"); | |
752 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver " | |
753 | "needs updating to supported shared IRQ lines.\n"); | |
c533120b | 754 | } |
1a8d4663 DB |
755 | c->irq.Attributes = req->Attributes; |
756 | s->irq.AssignedIRQ = req->AssignedIRQ = irq; | |
757 | s->irq.Config++; | |
758 | ||
759 | c->state |= CONFIG_IRQ_REQ; | |
e2d40963 | 760 | p_dev->_irq = 1; |
1a8d4663 DB |
761 | |
762 | #ifdef CONFIG_PCMCIA_PROBE | |
763 | pcmcia_used_irq[irq]++; | |
764 | #endif | |
765 | ||
4c89e88b | 766 | return 0; |
1a8d4663 DB |
767 | } /* pcmcia_request_irq */ |
768 | EXPORT_SYMBOL(pcmcia_request_irq); | |
769 | ||
770 | ||
771 | /** pcmcia_request_window | |
772 | * | |
773 | * Request_window() establishes a mapping between card memory space | |
774 | * and system memory space. | |
775 | */ | |
2bc5a9bd | 776 | int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh) |
1a8d4663 | 777 | { |
2bc5a9bd | 778 | struct pcmcia_socket *s = (*p_dev)->socket; |
1a8d4663 DB |
779 | window_t *win; |
780 | u_long align; | |
781 | int w; | |
782 | ||
1a8d4663 | 783 | if (!(s->state & SOCKET_PRESENT)) |
3939c1ef | 784 | return -ENODEV; |
610e2374 | 785 | if (req->Attributes & (WIN_PAGED | WIN_SHARED)) { |
d50dbec3 | 786 | dev_dbg(&s->dev, "bad attribute setting for iomem region\n"); |
610e2374 DB |
787 | return -EINVAL; |
788 | } | |
1a8d4663 DB |
789 | |
790 | /* Window size defaults to smallest available */ | |
791 | if (req->Size == 0) | |
792 | req->Size = s->map_size; | |
793 | align = (((s->features & SS_CAP_MEM_ALIGN) || | |
794 | (req->Attributes & WIN_STRICT_ALIGN)) ? | |
795 | req->Size : s->map_size); | |
69ba4433 | 796 | if (req->Size & (s->map_size-1)) { |
d50dbec3 | 797 | dev_dbg(&s->dev, "invalid map size\n"); |
69ba4433 DB |
798 | return -EINVAL; |
799 | } | |
1a8d4663 | 800 | if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) || |
69ba4433 | 801 | (req->Base & (align-1))) { |
d50dbec3 | 802 | dev_dbg(&s->dev, "invalid base address\n"); |
69ba4433 DB |
803 | return -EINVAL; |
804 | } | |
1a8d4663 DB |
805 | if (req->Base) |
806 | align = 0; | |
807 | ||
808 | /* Allocate system memory window */ | |
809 | for (w = 0; w < MAX_WIN; w++) | |
810 | if (!(s->state & SOCKET_WIN_REQ(w))) 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]; | |
817 | win->magic = WINDOW_MAGIC; | |
818 | win->index = w; | |
2bc5a9bd | 819 | win->handle = *p_dev; |
1a8d4663 DB |
820 | win->sock = s; |
821 | ||
822 | if (!(s->features & SS_CAP_STATIC_MAP)) { | |
823 | win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align, | |
824 | (req->Attributes & WIN_MAP_BELOW_1MB), s); | |
f958095e | 825 | if (!win->ctl.res) { |
d50dbec3 | 826 | dev_dbg(&s->dev, "allocating mem region failed\n"); |
f958095e DB |
827 | return -EINVAL; |
828 | } | |
1a8d4663 | 829 | } |
e2d40963 | 830 | (*p_dev)->_win |= CLIENT_WIN_REQ(w); |
1a8d4663 DB |
831 | |
832 | /* Configure the socket controller */ | |
833 | win->ctl.map = w+1; | |
834 | win->ctl.flags = 0; | |
835 | win->ctl.speed = req->AccessSpeed; | |
836 | if (req->Attributes & WIN_MEMORY_TYPE) | |
837 | win->ctl.flags |= MAP_ATTRIB; | |
838 | if (req->Attributes & WIN_ENABLE) | |
839 | win->ctl.flags |= MAP_ACTIVE; | |
840 | if (req->Attributes & WIN_DATA_WIDTH_16) | |
841 | win->ctl.flags |= MAP_16BIT; | |
842 | if (req->Attributes & WIN_USE_WAIT) | |
843 | win->ctl.flags |= MAP_USE_WAIT; | |
844 | win->ctl.card_start = 0; | |
926c5402 | 845 | if (s->ops->set_mem_map(s, &win->ctl) != 0) { |
d50dbec3 | 846 | dev_dbg(&s->dev, "failed to set memory mapping\n"); |
926c5402 DB |
847 | return -EIO; |
848 | } | |
1a8d4663 DB |
849 | s->state |= SOCKET_WIN_REQ(w); |
850 | ||
851 | /* Return window handle */ | |
852 | if (s->features & SS_CAP_STATIC_MAP) { | |
853 | req->Base = win->ctl.static_start; | |
854 | } else { | |
855 | req->Base = win->ctl.res->start; | |
856 | } | |
857 | *wh = win; | |
858 | ||
4c89e88b | 859 | return 0; |
1a8d4663 DB |
860 | } /* pcmcia_request_window */ |
861 | EXPORT_SYMBOL(pcmcia_request_window); | |
5f2a71fc DB |
862 | |
863 | void pcmcia_disable_device(struct pcmcia_device *p_dev) { | |
5f2a71fc | 864 | pcmcia_release_configuration(p_dev); |
fd238232 DB |
865 | pcmcia_release_io(p_dev, &p_dev->io); |
866 | pcmcia_release_irq(p_dev, &p_dev->irq); | |
c1ac0228 | 867 | if (p_dev->win) |
fd238232 | 868 | pcmcia_release_window(p_dev->win); |
5f2a71fc DB |
869 | } |
870 | EXPORT_SYMBOL(pcmcia_disable_device); | |
a804b574 DB |
871 | |
872 | ||
873 | struct pcmcia_cfg_mem { | |
91284224 DB |
874 | struct pcmcia_device *p_dev; |
875 | void *priv_data; | |
876 | int (*conf_check) (struct pcmcia_device *p_dev, | |
877 | cistpl_cftable_entry_t *cfg, | |
878 | cistpl_cftable_entry_t *dflt, | |
879 | unsigned int vcc, | |
880 | void *priv_data); | |
a804b574 | 881 | cisparse_t parse; |
8e2fc39d | 882 | cistpl_cftable_entry_t dflt; |
a804b574 DB |
883 | }; |
884 | ||
91284224 DB |
885 | /** |
886 | * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config() | |
887 | * | |
888 | * pcmcia_do_loop_config() is the internal callback for the call from | |
889 | * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred | |
890 | * by a struct pcmcia_cfg_mem. | |
891 | */ | |
892 | static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv) | |
893 | { | |
894 | cistpl_cftable_entry_t *cfg = &parse->cftable_entry; | |
895 | struct pcmcia_cfg_mem *cfg_mem = priv; | |
896 | ||
897 | /* default values */ | |
898 | cfg_mem->p_dev->conf.ConfigIndex = cfg->index; | |
899 | if (cfg->flags & CISTPL_CFTABLE_DEFAULT) | |
900 | cfg_mem->dflt = *cfg; | |
901 | ||
902 | return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt, | |
903 | cfg_mem->p_dev->socket->socket.Vcc, | |
904 | cfg_mem->priv_data); | |
905 | } | |
906 | ||
a804b574 DB |
907 | /** |
908 | * pcmcia_loop_config() - loop over configuration options | |
909 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
910 | * @conf_check: function to call for each configuration option. | |
911 | * It gets passed the struct pcmcia_device, the CIS data | |
912 | * describing the configuration option, and private data | |
913 | * being passed to pcmcia_loop_config() | |
914 | * @priv_data: private data to be passed to the conf_check function. | |
915 | * | |
916 | * pcmcia_loop_config() loops over all configuration options, and calls | |
917 | * the driver-specific conf_check() for each one, checking whether | |
889c2774 | 918 | * it is a valid one. Returns 0 on success or errorcode otherwise. |
a804b574 DB |
919 | */ |
920 | int pcmcia_loop_config(struct pcmcia_device *p_dev, | |
921 | int (*conf_check) (struct pcmcia_device *p_dev, | |
922 | cistpl_cftable_entry_t *cfg, | |
8e2fc39d | 923 | cistpl_cftable_entry_t *dflt, |
ad913c11 | 924 | unsigned int vcc, |
a804b574 DB |
925 | void *priv_data), |
926 | void *priv_data) | |
927 | { | |
928 | struct pcmcia_cfg_mem *cfg_mem; | |
889c2774 | 929 | int ret; |
a804b574 DB |
930 | |
931 | cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL); | |
932 | if (cfg_mem == NULL) | |
933 | return -ENOMEM; | |
934 | ||
91284224 DB |
935 | cfg_mem->p_dev = p_dev; |
936 | cfg_mem->conf_check = conf_check; | |
937 | cfg_mem->priv_data = priv_data; | |
ad913c11 | 938 | |
91284224 DB |
939 | ret = pccard_loop_tuple(p_dev->socket, p_dev->func, |
940 | CISTPL_CFTABLE_ENTRY, &cfg_mem->parse, | |
941 | cfg_mem, pcmcia_do_loop_config); | |
a804b574 | 942 | |
91284224 DB |
943 | kfree(cfg_mem); |
944 | return ret; | |
945 | } | |
946 | EXPORT_SYMBOL(pcmcia_loop_config); | |
498ac189 | 947 | |
a804b574 | 948 | |
91284224 DB |
949 | struct pcmcia_loop_mem { |
950 | struct pcmcia_device *p_dev; | |
951 | void *priv_data; | |
952 | int (*loop_tuple) (struct pcmcia_device *p_dev, | |
953 | tuple_t *tuple, | |
954 | void *priv_data); | |
955 | }; | |
a804b574 | 956 | |
91284224 DB |
957 | /** |
958 | * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config() | |
959 | * | |
960 | * pcmcia_do_loop_tuple() is the internal callback for the call from | |
961 | * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred | |
962 | * by a struct pcmcia_cfg_mem. | |
963 | */ | |
964 | static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv) | |
965 | { | |
966 | struct pcmcia_loop_mem *loop = priv; | |
498ac189 | 967 | |
91284224 DB |
968 | return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data); |
969 | }; | |
970 | ||
971 | /** | |
972 | * pcmcia_loop_tuple() - loop over tuples in the CIS | |
973 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
974 | * @code: which CIS code shall we look for? | |
975 | * @priv_data: private data to be passed to the loop_tuple function. | |
976 | * @loop_tuple: function to call for each CIS entry of type @function. IT | |
977 | * gets passed the raw tuple and @priv_data. | |
978 | * | |
979 | * pcmcia_loop_tuple() loops over all CIS entries of type @function, and | |
980 | * calls the @loop_tuple function for each entry. If the call to @loop_tuple | |
981 | * returns 0, the loop exits. Returns 0 on success or errorcode otherwise. | |
982 | */ | |
983 | int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code, | |
984 | int (*loop_tuple) (struct pcmcia_device *p_dev, | |
985 | tuple_t *tuple, | |
986 | void *priv_data), | |
987 | void *priv_data) | |
988 | { | |
989 | struct pcmcia_loop_mem loop = { | |
990 | .p_dev = p_dev, | |
991 | .loop_tuple = loop_tuple, | |
992 | .priv_data = priv_data}; | |
993 | ||
994 | return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL, | |
995 | &loop, pcmcia_do_loop_tuple); | |
996 | }; | |
997 | EXPORT_SYMBOL(pcmcia_loop_tuple); | |
a804b574 | 998 | |
91284224 DB |
999 | |
1000 | struct pcmcia_loop_get { | |
1001 | size_t len; | |
1002 | cisdata_t **buf; | |
1003 | }; | |
1004 | ||
1005 | /** | |
1006 | * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple() | |
1007 | * | |
1008 | * pcmcia_do_get_tuple() is the internal callback for the call from | |
1009 | * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in | |
1010 | * the first tuple, return 0 unconditionally. Create a memory buffer large | |
1011 | * enough to hold the content of the tuple, and fill it with the tuple data. | |
1012 | * The caller is responsible to free the buffer. | |
1013 | */ | |
1014 | static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple, | |
1015 | void *priv) | |
1016 | { | |
1017 | struct pcmcia_loop_get *get = priv; | |
1018 | ||
1019 | *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL); | |
1020 | if (*get->buf) { | |
1021 | get->len = tuple->TupleDataLen; | |
1022 | memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen); | |
a804b574 | 1023 | } |
91284224 DB |
1024 | return 0; |
1025 | }; | |
1026 | ||
1027 | /** | |
1028 | * pcmcia_get_tuple() - get first tuple from CIS | |
1029 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
1030 | * @code: which CIS code shall we look for? | |
1031 | * @buf: pointer to store the buffer to. | |
1032 | * | |
1033 | * pcmcia_get_tuple() gets the content of the first CIS entry of type @code. | |
1034 | * It returns the buffer length (or zero). The caller is responsible to free | |
1035 | * the buffer passed in @buf. | |
1036 | */ | |
1037 | size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code, | |
1038 | unsigned char **buf) | |
1039 | { | |
1040 | struct pcmcia_loop_get get = { | |
1041 | .len = 0, | |
1042 | .buf = buf, | |
1043 | }; | |
1044 | ||
1045 | *get.buf = NULL; | |
1046 | pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get); | |
1047 | ||
1048 | return get.len; | |
1049 | }; | |
1050 | EXPORT_SYMBOL(pcmcia_get_tuple); | |
1051 | ||
1052 | ||
1053 | /** | |
1054 | * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis() | |
1055 | * | |
1056 | * pcmcia_do_get_mac() is the internal callback for the call from | |
1057 | * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the | |
1058 | * tuple contains a proper LAN_NODE_ID of length 6, and copy the data | |
1059 | * to struct net_device->dev_addr[i]. | |
1060 | */ | |
1061 | static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple, | |
1062 | void *priv) | |
1063 | { | |
1064 | struct net_device *dev = priv; | |
1065 | int i; | |
1066 | ||
1067 | if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID) | |
1068 | return -EINVAL; | |
1069 | if (tuple->TupleDataLen < ETH_ALEN + 2) { | |
1070 | dev_warn(&p_dev->dev, "Invalid CIS tuple length for " | |
1071 | "LAN_NODE_ID\n"); | |
1072 | return -EINVAL; | |
1073 | } | |
1074 | ||
1075 | if (tuple->TupleData[1] != ETH_ALEN) { | |
1076 | dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n"); | |
1077 | return -EINVAL; | |
1078 | } | |
1079 | for (i = 0; i < 6; i++) | |
1080 | dev->dev_addr[i] = tuple->TupleData[i+2]; | |
1081 | return 0; | |
1082 | }; | |
1083 | ||
1084 | /** | |
1085 | * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE | |
1086 | * @p_dev: the struct pcmcia_device for which we want the address. | |
1087 | * @dev: a properly prepared struct net_device to store the info to. | |
1088 | * | |
1089 | * pcmcia_get_mac_from_cis() reads out the hardware MAC address from | |
1090 | * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which | |
1091 | * must be set up properly by the driver (see examples!). | |
1092 | */ | |
1093 | int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev) | |
1094 | { | |
1095 | return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev); | |
1096 | }; | |
1097 | EXPORT_SYMBOL(pcmcia_get_mac_from_cis); | |
a804b574 | 1098 |