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 | ||
7d16b658 | 47 | #ifdef CONFIG_PCMCIA_DEBUG |
1a8d4663 | 48 | extern int ds_pc_debug; |
1a8d4663 DB |
49 | |
50 | #define ds_dbg(skt, lvl, fmt, arg...) do { \ | |
51 | if (ds_pc_debug >= lvl) \ | |
ac449d6e DB |
52 | dev_printk(KERN_DEBUG, &skt->dev, \ |
53 | "pcmcia_resource: " fmt, \ | |
54 | ## arg); \ | |
1a8d4663 DB |
55 | } while (0) |
56 | #else | |
ac449d6e | 57 | #define ds_dbg(skt, lvl, fmt, arg...) do { } while (0) |
1a8d4663 DB |
58 | #endif |
59 | ||
60 | ||
61 | ||
62 | /** alloc_io_space | |
63 | * | |
64 | * Special stuff for managing IO windows, because they are scarce | |
65 | */ | |
66 | ||
ecb8a847 OJ |
67 | static int alloc_io_space(struct pcmcia_socket *s, u_int attr, |
68 | unsigned int *base, unsigned int num, u_int lines) | |
1a8d4663 DB |
69 | { |
70 | int i; | |
ecb8a847 | 71 | unsigned int try, align; |
1a8d4663 DB |
72 | |
73 | align = (*base) ? (lines ? 1<<lines : 0) : 1; | |
74 | if (align && (align < num)) { | |
75 | if (*base) { | |
ecb8a847 | 76 | ds_dbg(s, 0, "odd IO request: num %#x align %#x\n", |
1a8d4663 DB |
77 | num, align); |
78 | align = 0; | |
79 | } else | |
80 | while (align && (align < num)) align <<= 1; | |
81 | } | |
82 | if (*base & ~(align-1)) { | |
ecb8a847 | 83 | ds_dbg(s, 0, "odd IO request: base %#x align %#x\n", |
1a8d4663 DB |
84 | *base, align); |
85 | align = 0; | |
86 | } | |
87 | if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) { | |
88 | *base = s->io_offset | (*base & 0x0fff); | |
89 | return 0; | |
90 | } | |
91 | /* Check for an already-allocated window that must conflict with | |
92 | * what was asked for. It is a hack because it does not catch all | |
93 | * potential conflicts, just the most obvious ones. | |
94 | */ | |
95 | for (i = 0; i < MAX_IO_WIN; i++) | |
4708b5fa | 96 | if ((s->io[i].res) && *base && |
c7d00693 | 97 | ((s->io[i].res->start & (align-1)) == *base)) |
1a8d4663 DB |
98 | return 1; |
99 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 100 | if (!s->io[i].res) { |
1a8d4663 DB |
101 | s->io[i].res = pcmcia_find_io_region(*base, num, align, s); |
102 | if (s->io[i].res) { | |
c7d00693 DB |
103 | *base = s->io[i].res->start; |
104 | s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS); | |
105 | s->io[i].InUse = num; | |
1a8d4663 DB |
106 | break; |
107 | } else | |
108 | return 1; | |
c7d00693 | 109 | } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS)) |
1a8d4663 DB |
110 | continue; |
111 | /* Try to extend top of window */ | |
c7d00693 | 112 | try = s->io[i].res->end + 1; |
1a8d4663 DB |
113 | if ((*base == 0) || (*base == try)) |
114 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start, | |
115 | s->io[i].res->end + num, s) == 0) { | |
116 | *base = try; | |
1a8d4663 DB |
117 | s->io[i].InUse += num; |
118 | break; | |
119 | } | |
120 | /* Try to extend bottom of window */ | |
c7d00693 | 121 | try = s->io[i].res->start - num; |
1a8d4663 DB |
122 | if ((*base == 0) || (*base == try)) |
123 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num, | |
124 | s->io[i].res->end, s) == 0) { | |
c7d00693 | 125 | *base = try; |
1a8d4663 DB |
126 | s->io[i].InUse += num; |
127 | break; | |
128 | } | |
129 | } | |
130 | return (i == MAX_IO_WIN); | |
131 | } /* alloc_io_space */ | |
132 | ||
133 | ||
ecb8a847 OJ |
134 | static void release_io_space(struct pcmcia_socket *s, unsigned int base, |
135 | unsigned int num) | |
1a8d4663 DB |
136 | { |
137 | int i; | |
138 | ||
139 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 DB |
140 | if (!s->io[i].res) |
141 | continue; | |
142 | if ((s->io[i].res->start <= base) && | |
143 | (s->io[i].res->end >= base+num-1)) { | |
1a8d4663 DB |
144 | s->io[i].InUse -= num; |
145 | /* Free the window if no one else is using it */ | |
146 | if (s->io[i].InUse == 0) { | |
1a8d4663 DB |
147 | release_resource(s->io[i].res); |
148 | kfree(s->io[i].res); | |
149 | s->io[i].res = NULL; | |
150 | } | |
151 | } | |
152 | } | |
153 | } /* release_io_space */ | |
154 | ||
155 | ||
156 | /** pccard_access_configuration_register | |
157 | * | |
158 | * Access_configuration_register() reads and writes configuration | |
159 | * registers in attribute memory. Memory window 0 is reserved for | |
160 | * this and the tuple reading services. | |
161 | */ | |
162 | ||
855cdf13 | 163 | int pcmcia_access_configuration_register(struct pcmcia_device *p_dev, |
1a8d4663 DB |
164 | conf_reg_t *reg) |
165 | { | |
855cdf13 | 166 | struct pcmcia_socket *s; |
1a8d4663 DB |
167 | config_t *c; |
168 | int addr; | |
169 | u_char val; | |
170 | ||
855cdf13 | 171 | if (!p_dev || !p_dev->function_config) |
3939c1ef | 172 | return -EINVAL; |
1a8d4663 | 173 | |
855cdf13 DB |
174 | s = p_dev->socket; |
175 | c = p_dev->function_config; | |
1a8d4663 DB |
176 | |
177 | if (!(c->state & CONFIG_LOCKED)) | |
943f70f1 | 178 | return -EACCES; |
1a8d4663 DB |
179 | |
180 | addr = (c->ConfigBase + reg->Offset) >> 1; | |
181 | ||
182 | switch (reg->Action) { | |
183 | case CS_READ: | |
184 | pcmcia_read_cis_mem(s, 1, addr, 1, &val); | |
185 | reg->Value = val; | |
186 | break; | |
187 | case CS_WRITE: | |
188 | val = reg->Value; | |
189 | pcmcia_write_cis_mem(s, 1, addr, 1, &val); | |
190 | break; | |
191 | default: | |
926c5402 | 192 | return -EINVAL; |
1a8d4663 DB |
193 | break; |
194 | } | |
4c89e88b | 195 | return 0; |
855cdf13 | 196 | } /* pcmcia_access_configuration_register */ |
3448139b DB |
197 | EXPORT_SYMBOL(pcmcia_access_configuration_register); |
198 | ||
1a8d4663 | 199 | |
1a8d4663 DB |
200 | /** pcmcia_get_window |
201 | */ | |
202 | int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle, | |
203 | int idx, win_req_t *req) | |
204 | { | |
205 | window_t *win; | |
206 | int w; | |
207 | ||
208 | if (!s || !(s->state & SOCKET_PRESENT)) | |
3939c1ef | 209 | return -ENODEV; |
1a8d4663 DB |
210 | for (w = idx; w < MAX_WIN; w++) |
211 | if (s->state & SOCKET_WIN_REQ(w)) | |
212 | break; | |
213 | if (w == MAX_WIN) | |
635d19be | 214 | return -EINVAL; |
1a8d4663 DB |
215 | win = &s->win[w]; |
216 | req->Base = win->ctl.res->start; | |
217 | req->Size = win->ctl.res->end - win->ctl.res->start + 1; | |
218 | req->AccessSpeed = win->ctl.speed; | |
219 | req->Attributes = 0; | |
220 | if (win->ctl.flags & MAP_ATTRIB) | |
221 | req->Attributes |= WIN_MEMORY_TYPE_AM; | |
222 | if (win->ctl.flags & MAP_ACTIVE) | |
223 | req->Attributes |= WIN_ENABLE; | |
224 | if (win->ctl.flags & MAP_16BIT) | |
225 | req->Attributes |= WIN_DATA_WIDTH_16; | |
226 | if (win->ctl.flags & MAP_USE_WAIT) | |
227 | req->Attributes |= WIN_USE_WAIT; | |
228 | *handle = win; | |
4c89e88b | 229 | return 0; |
1a8d4663 DB |
230 | } /* pcmcia_get_window */ |
231 | EXPORT_SYMBOL(pcmcia_get_window); | |
232 | ||
233 | ||
1a8d4663 DB |
234 | /** pcmcia_get_mem_page |
235 | * | |
236 | * Change the card address of an already open memory window. | |
237 | */ | |
238 | int pcmcia_get_mem_page(window_handle_t win, memreq_t *req) | |
239 | { | |
240 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
ffb8da20 | 241 | return -EINVAL; |
1a8d4663 DB |
242 | req->Page = 0; |
243 | req->CardOffset = win->ctl.card_start; | |
4c89e88b | 244 | return 0; |
1a8d4663 DB |
245 | } /* pcmcia_get_mem_page */ |
246 | EXPORT_SYMBOL(pcmcia_get_mem_page); | |
247 | ||
248 | ||
249 | int pcmcia_map_mem_page(window_handle_t win, memreq_t *req) | |
250 | { | |
251 | struct pcmcia_socket *s; | |
252 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
ffb8da20 | 253 | return -EINVAL; |
1a8d4663 | 254 | s = win->sock; |
610e2374 DB |
255 | if (req->Page != 0) { |
256 | ds_dbg(s, 0, "failure: requested page is zero\n"); | |
257 | return -EINVAL; | |
258 | } | |
1a8d4663 | 259 | win->ctl.card_start = req->CardOffset; |
69ba4433 DB |
260 | if (s->ops->set_mem_map(s, &win->ctl) != 0) { |
261 | ds_dbg(s, 0, "failed to set_mem_map\n"); | |
262 | return -EIO; | |
263 | } | |
4c89e88b | 264 | return 0; |
1a8d4663 DB |
265 | } /* pcmcia_map_mem_page */ |
266 | EXPORT_SYMBOL(pcmcia_map_mem_page); | |
267 | ||
268 | ||
269 | /** pcmcia_modify_configuration | |
270 | * | |
271 | * Modify a locked socket configuration | |
272 | */ | |
2bc5a9bd | 273 | int pcmcia_modify_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
274 | modconf_t *mod) |
275 | { | |
276 | struct pcmcia_socket *s; | |
277 | config_t *c; | |
278 | ||
2bc5a9bd | 279 | s = p_dev->socket; |
dbb22f0d DB |
280 | c = p_dev->function_config; |
281 | ||
1a8d4663 | 282 | if (!(s->state & SOCKET_PRESENT)) |
3939c1ef | 283 | return -ENODEV; |
1a8d4663 | 284 | if (!(c->state & CONFIG_LOCKED)) |
943f70f1 | 285 | return -EACCES; |
1a8d4663 DB |
286 | |
287 | if (mod->Attributes & CONF_IRQ_CHANGE_VALID) { | |
288 | if (mod->Attributes & CONF_ENABLE_IRQ) { | |
289 | c->Attributes |= CONF_ENABLE_IRQ; | |
290 | s->socket.io_irq = s->irq.AssignedIRQ; | |
291 | } else { | |
292 | c->Attributes &= ~CONF_ENABLE_IRQ; | |
293 | s->socket.io_irq = 0; | |
294 | } | |
295 | s->ops->set_socket(s, &s->socket); | |
296 | } | |
297 | ||
d8b0a49d DB |
298 | if (mod->Attributes & CONF_VCC_CHANGE_VALID) { |
299 | ds_dbg(s, 0, "changing Vcc is not allowed at this time\n"); | |
300 | return -EINVAL; | |
301 | } | |
1a8d4663 DB |
302 | |
303 | /* We only allow changing Vpp1 and Vpp2 to the same value */ | |
304 | if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) && | |
305 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { | |
60df3de8 | 306 | if (mod->Vpp1 != mod->Vpp2) { |
d8b0a49d DB |
307 | ds_dbg(s, 0, "Vpp1 and Vpp2 must be the same\n"); |
308 | return -EINVAL; | |
60df3de8 | 309 | } |
71ed90d8 | 310 | s->socket.Vpp = mod->Vpp1; |
d8b0a49d DB |
311 | if (s->ops->set_socket(s, &s->socket)) { |
312 | dev_printk(KERN_WARNING, &s->dev, | |
313 | "Unable to set VPP\n"); | |
314 | return -EIO; | |
315 | } | |
1a8d4663 | 316 | } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || |
d8b0a49d DB |
317 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { |
318 | ds_dbg(s, 0, "changing Vcc is not allowed at this time\n"); | |
319 | return -EINVAL; | |
320 | } | |
1a8d4663 | 321 | |
4bbed523 DB |
322 | if (mod->Attributes & CONF_IO_CHANGE_WIDTH) { |
323 | pccard_io_map io_off = { 0, 0, 0, 0, 1 }; | |
324 | pccard_io_map io_on; | |
325 | int i; | |
326 | ||
327 | io_on.speed = io_speed; | |
328 | for (i = 0; i < MAX_IO_WIN; i++) { | |
329 | if (!s->io[i].res) | |
330 | continue; | |
331 | io_off.map = i; | |
332 | io_on.map = i; | |
333 | ||
334 | io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; | |
335 | io_on.start = s->io[i].res->start; | |
336 | io_on.stop = s->io[i].res->end; | |
337 | ||
338 | s->ops->set_io_map(s, &io_off); | |
339 | mdelay(40); | |
340 | s->ops->set_io_map(s, &io_on); | |
341 | } | |
342 | } | |
343 | ||
4c89e88b | 344 | return 0; |
1a8d4663 DB |
345 | } /* modify_configuration */ |
346 | EXPORT_SYMBOL(pcmcia_modify_configuration); | |
347 | ||
348 | ||
2bc5a9bd | 349 | int pcmcia_release_configuration(struct pcmcia_device *p_dev) |
1a8d4663 DB |
350 | { |
351 | pccard_io_map io = { 0, 0, 0, 0, 1 }; | |
2bc5a9bd | 352 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc | 353 | config_t *c = p_dev->function_config; |
1a8d4663 DB |
354 | int i; |
355 | ||
e2d40963 DB |
356 | if (p_dev->_locked) { |
357 | p_dev->_locked = 0; | |
1a8d4663 DB |
358 | if (--(s->lock_count) == 0) { |
359 | s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ | |
360 | s->socket.Vpp = 0; | |
361 | s->socket.io_irq = 0; | |
362 | s->ops->set_socket(s, &s->socket); | |
363 | } | |
5f2a71fc DB |
364 | } |
365 | if (c->state & CONFIG_LOCKED) { | |
366 | c->state &= ~CONFIG_LOCKED; | |
1a8d4663 DB |
367 | if (c->state & CONFIG_IO_REQ) |
368 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 369 | if (!s->io[i].res) |
1a8d4663 DB |
370 | continue; |
371 | s->io[i].Config--; | |
372 | if (s->io[i].Config != 0) | |
373 | continue; | |
374 | io.map = i; | |
375 | s->ops->set_io_map(s, &io); | |
376 | } | |
1a8d4663 DB |
377 | } |
378 | ||
4c89e88b | 379 | return 0; |
1a8d4663 | 380 | } /* pcmcia_release_configuration */ |
1a8d4663 DB |
381 | |
382 | ||
383 | /** pcmcia_release_io | |
384 | * | |
385 | * Release_io() releases the I/O ranges allocated by a client. This | |
386 | * may be invoked some time after a card ejection has already dumped | |
387 | * the actual socket configuration, so if the client is "stale", we | |
388 | * don't bother checking the port ranges against the current socket | |
389 | * values. | |
390 | */ | |
b4c88400 | 391 | static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 392 | { |
2bc5a9bd | 393 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc | 394 | config_t *c = p_dev->function_config; |
1a8d4663 | 395 | |
e2d40963 | 396 | if (!p_dev->_io ) |
ffb8da20 | 397 | return -EINVAL; |
5f2a71fc | 398 | |
e2d40963 | 399 | p_dev->_io = 0; |
1a8d4663 | 400 | |
5f2a71fc DB |
401 | if ((c->io.BasePort1 != req->BasePort1) || |
402 | (c->io.NumPorts1 != req->NumPorts1) || | |
403 | (c->io.BasePort2 != req->BasePort2) || | |
404 | (c->io.NumPorts2 != req->NumPorts2)) | |
926c5402 | 405 | return -EINVAL; |
5f2a71fc DB |
406 | |
407 | c->state &= ~CONFIG_IO_REQ; | |
1a8d4663 DB |
408 | |
409 | release_io_space(s, req->BasePort1, req->NumPorts1); | |
410 | if (req->NumPorts2) | |
411 | release_io_space(s, req->BasePort2, req->NumPorts2); | |
412 | ||
4c89e88b | 413 | return 0; |
1a8d4663 | 414 | } /* pcmcia_release_io */ |
1a8d4663 DB |
415 | |
416 | ||
b4c88400 | 417 | static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 418 | { |
2bc5a9bd | 419 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc DB |
420 | config_t *c= p_dev->function_config; |
421 | ||
e2d40963 | 422 | if (!p_dev->_irq) |
ffb8da20 | 423 | return -EINVAL; |
e2d40963 | 424 | p_dev->_irq = 0; |
1a8d4663 | 425 | |
5f2a71fc | 426 | if (c->state & CONFIG_LOCKED) |
943f70f1 | 427 | return -EACCES; |
610e2374 DB |
428 | if (c->irq.Attributes != req->Attributes) { |
429 | ds_dbg(s, 0, "IRQ attributes must match assigned ones\n"); | |
430 | return -EINVAL; | |
431 | } | |
69ba4433 DB |
432 | if (s->irq.AssignedIRQ != req->AssignedIRQ) { |
433 | ds_dbg(s, 0, "IRQ must match assigned one\n"); | |
434 | return -EINVAL; | |
435 | } | |
5f2a71fc DB |
436 | if (--s->irq.Config == 0) { |
437 | c->state &= ~CONFIG_IRQ_REQ; | |
438 | s->irq.AssignedIRQ = 0; | |
1a8d4663 DB |
439 | } |
440 | ||
441 | if (req->Attributes & IRQ_HANDLE_PRESENT) { | |
442 | free_irq(req->AssignedIRQ, req->Instance); | |
443 | } | |
444 | ||
445 | #ifdef CONFIG_PCMCIA_PROBE | |
446 | pcmcia_used_irq[req->AssignedIRQ]--; | |
447 | #endif | |
448 | ||
4c89e88b | 449 | return 0; |
1a8d4663 | 450 | } /* pcmcia_release_irq */ |
1a8d4663 DB |
451 | |
452 | ||
453 | int pcmcia_release_window(window_handle_t win) | |
454 | { | |
455 | struct pcmcia_socket *s; | |
456 | ||
457 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
ffb8da20 | 458 | return -EINVAL; |
1a8d4663 | 459 | s = win->sock; |
e2d40963 | 460 | if (!(win->handle->_win & CLIENT_WIN_REQ(win->index))) |
ffb8da20 | 461 | return -EINVAL; |
1a8d4663 DB |
462 | |
463 | /* Shut down memory window */ | |
464 | win->ctl.flags &= ~MAP_ACTIVE; | |
465 | s->ops->set_mem_map(s, &win->ctl); | |
466 | s->state &= ~SOCKET_WIN_REQ(win->index); | |
467 | ||
468 | /* Release system memory */ | |
469 | if (win->ctl.res) { | |
470 | release_resource(win->ctl.res); | |
471 | kfree(win->ctl.res); | |
472 | win->ctl.res = NULL; | |
473 | } | |
e2d40963 | 474 | win->handle->_win &= ~CLIENT_WIN_REQ(win->index); |
1a8d4663 DB |
475 | |
476 | win->magic = 0; | |
477 | ||
4c89e88b | 478 | return 0; |
1a8d4663 DB |
479 | } /* pcmcia_release_window */ |
480 | EXPORT_SYMBOL(pcmcia_release_window); | |
481 | ||
482 | ||
2bc5a9bd | 483 | int pcmcia_request_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
484 | config_req_t *req) |
485 | { | |
486 | int i; | |
487 | u_int base; | |
2bc5a9bd | 488 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
489 | config_t *c; |
490 | pccard_io_map iomap; | |
491 | ||
1a8d4663 | 492 | if (!(s->state & SOCKET_PRESENT)) |
d598de02 | 493 | return -ENODEV; |
1a8d4663 | 494 | |
de6405e9 DB |
495 | if (req->IntType & INT_CARDBUS) { |
496 | ds_dbg(p_dev->socket, 0, "IntType may not be INT_CARDBUS\n"); | |
497 | return -EINVAL; | |
498 | } | |
dbb22f0d | 499 | c = p_dev->function_config; |
1a8d4663 | 500 | if (c->state & CONFIG_LOCKED) |
943f70f1 | 501 | return -EACCES; |
1a8d4663 DB |
502 | |
503 | /* Do power control. We don't allow changes in Vcc. */ | |
70294b46 | 504 | s->socket.Vpp = req->Vpp; |
d8b0a49d DB |
505 | if (s->ops->set_socket(s, &s->socket)) { |
506 | dev_printk(KERN_WARNING, &s->dev, | |
507 | "Unable to set socket state\n"); | |
508 | return -EINVAL; | |
509 | } | |
1a8d4663 | 510 | |
1a8d4663 DB |
511 | /* Pick memory or I/O card, DMA mode, interrupt */ |
512 | c->IntType = req->IntType; | |
513 | c->Attributes = req->Attributes; | |
514 | if (req->IntType & INT_MEMORY_AND_IO) | |
515 | s->socket.flags |= SS_IOCARD; | |
516 | if (req->IntType & INT_ZOOMED_VIDEO) | |
517 | s->socket.flags |= SS_ZVCARD | SS_IOCARD; | |
518 | if (req->Attributes & CONF_ENABLE_DMA) | |
519 | s->socket.flags |= SS_DMA_MODE; | |
520 | if (req->Attributes & CONF_ENABLE_SPKR) | |
521 | s->socket.flags |= SS_SPKR_ENA; | |
522 | if (req->Attributes & CONF_ENABLE_IRQ) | |
523 | s->socket.io_irq = s->irq.AssignedIRQ; | |
524 | else | |
525 | s->socket.io_irq = 0; | |
526 | s->ops->set_socket(s, &s->socket); | |
527 | s->lock_count++; | |
528 | ||
529 | /* Set up CIS configuration registers */ | |
530 | base = c->ConfigBase = req->ConfigBase; | |
1ae9c7d8 | 531 | c->CardValues = req->Present; |
1a8d4663 DB |
532 | if (req->Present & PRESENT_COPY) { |
533 | c->Copy = req->Copy; | |
534 | pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy); | |
535 | } | |
536 | if (req->Present & PRESENT_OPTION) { | |
537 | if (s->functions == 1) { | |
538 | c->Option = req->ConfigIndex & COR_CONFIG_MASK; | |
539 | } else { | |
540 | c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK; | |
541 | c->Option |= COR_FUNC_ENA|COR_IREQ_ENA; | |
542 | if (req->Present & PRESENT_IOBASE_0) | |
543 | c->Option |= COR_ADDR_DECODE; | |
544 | } | |
545 | if (c->state & CONFIG_IRQ_REQ) | |
546 | if (!(c->irq.Attributes & IRQ_FORCED_PULSE)) | |
547 | c->Option |= COR_LEVEL_REQ; | |
548 | pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option); | |
549 | mdelay(40); | |
550 | } | |
551 | if (req->Present & PRESENT_STATUS) { | |
552 | c->Status = req->Status; | |
553 | pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status); | |
554 | } | |
555 | if (req->Present & PRESENT_PIN_REPLACE) { | |
556 | c->Pin = req->Pin; | |
557 | pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin); | |
558 | } | |
559 | if (req->Present & PRESENT_EXT_STATUS) { | |
560 | c->ExtStatus = req->ExtStatus; | |
561 | pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus); | |
562 | } | |
563 | if (req->Present & PRESENT_IOBASE_0) { | |
564 | u_char b = c->io.BasePort1 & 0xff; | |
565 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); | |
566 | b = (c->io.BasePort1 >> 8) & 0xff; | |
567 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); | |
568 | } | |
569 | if (req->Present & PRESENT_IOSIZE) { | |
570 | u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1; | |
571 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); | |
572 | } | |
573 | ||
574 | /* Configure I/O windows */ | |
575 | if (c->state & CONFIG_IO_REQ) { | |
576 | iomap.speed = io_speed; | |
577 | for (i = 0; i < MAX_IO_WIN; i++) | |
c7d00693 | 578 | if (s->io[i].res) { |
1a8d4663 DB |
579 | iomap.map = i; |
580 | iomap.flags = MAP_ACTIVE; | |
c7d00693 | 581 | switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) { |
1a8d4663 DB |
582 | case IO_DATA_PATH_WIDTH_16: |
583 | iomap.flags |= MAP_16BIT; break; | |
584 | case IO_DATA_PATH_WIDTH_AUTO: | |
585 | iomap.flags |= MAP_AUTOSZ; break; | |
586 | default: | |
587 | break; | |
588 | } | |
c7d00693 DB |
589 | iomap.start = s->io[i].res->start; |
590 | iomap.stop = s->io[i].res->end; | |
1a8d4663 DB |
591 | s->ops->set_io_map(s, &iomap); |
592 | s->io[i].Config++; | |
593 | } | |
594 | } | |
595 | ||
596 | c->state |= CONFIG_LOCKED; | |
e2d40963 | 597 | p_dev->_locked = 1; |
4c89e88b | 598 | return 0; |
1a8d4663 DB |
599 | } /* pcmcia_request_configuration */ |
600 | EXPORT_SYMBOL(pcmcia_request_configuration); | |
601 | ||
602 | ||
603 | /** pcmcia_request_io | |
604 | * | |
605 | * Request_io() reserves ranges of port addresses for a socket. | |
606 | * I have not implemented range sharing or alias addressing. | |
607 | */ | |
2bc5a9bd | 608 | int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 609 | { |
2bc5a9bd | 610 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
611 | config_t *c; |
612 | ||
1a8d4663 | 613 | if (!(s->state & SOCKET_PRESENT)) |
3939c1ef | 614 | return -ENODEV; |
1a8d4663 | 615 | |
1a8d4663 | 616 | if (!req) |
de6405e9 | 617 | return -EINVAL; |
dbb22f0d | 618 | c = p_dev->function_config; |
1a8d4663 | 619 | if (c->state & CONFIG_LOCKED) |
943f70f1 | 620 | return -EACCES; |
f958095e DB |
621 | if (c->state & CONFIG_IO_REQ) { |
622 | ds_dbg(s, 0, "IO already configured\n"); | |
623 | return -EBUSY; | |
624 | } | |
610e2374 DB |
625 | if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) { |
626 | ds_dbg(s, 0, "bad attribute setting for IO region 1\n"); | |
627 | return -EINVAL; | |
628 | } | |
1a8d4663 | 629 | if ((req->NumPorts2 > 0) && |
610e2374 DB |
630 | (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) { |
631 | ds_dbg(s, 0, "bad attribute setting for IO region 2\n"); | |
632 | return -EINVAL; | |
633 | } | |
1a8d4663 | 634 | |
f958095e | 635 | ds_dbg(s, 1, "trying to allocate resource 1\n"); |
1a8d4663 | 636 | if (alloc_io_space(s, req->Attributes1, &req->BasePort1, |
f958095e DB |
637 | req->NumPorts1, req->IOAddrLines)) { |
638 | ds_dbg(s, 0, "allocation of resource 1 failed\n"); | |
639 | return -EBUSY; | |
640 | } | |
1a8d4663 DB |
641 | |
642 | if (req->NumPorts2) { | |
f958095e | 643 | ds_dbg(s, 1, "trying to allocate resource 2\n"); |
1a8d4663 DB |
644 | if (alloc_io_space(s, req->Attributes2, &req->BasePort2, |
645 | req->NumPorts2, req->IOAddrLines)) { | |
f958095e | 646 | ds_dbg(s, 0, "allocation of resource 2 failed\n"); |
1a8d4663 | 647 | release_io_space(s, req->BasePort1, req->NumPorts1); |
f958095e | 648 | return -EBUSY; |
1a8d4663 DB |
649 | } |
650 | } | |
651 | ||
652 | c->io = *req; | |
653 | c->state |= CONFIG_IO_REQ; | |
e2d40963 | 654 | p_dev->_io = 1; |
4c89e88b | 655 | return 0; |
1a8d4663 DB |
656 | } /* pcmcia_request_io */ |
657 | EXPORT_SYMBOL(pcmcia_request_io); | |
658 | ||
659 | ||
660 | /** pcmcia_request_irq | |
661 | * | |
662 | * Request_irq() reserves an irq for this client. | |
663 | * | |
664 | * Also, since Linux only reserves irq's when they are actually | |
665 | * hooked, we don't guarantee that an irq will still be available | |
666 | * when the configuration is locked. Now that I think about it, | |
667 | * there might be a way to fix this using a dummy handler. | |
668 | */ | |
669 | ||
670 | #ifdef CONFIG_PCMCIA_PROBE | |
7d12e780 | 671 | static irqreturn_t test_action(int cpl, void *dev_id) |
1a8d4663 DB |
672 | { |
673 | return IRQ_NONE; | |
674 | } | |
675 | #endif | |
676 | ||
2bc5a9bd | 677 | int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 678 | { |
2bc5a9bd | 679 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 | 680 | config_t *c; |
f958095e | 681 | int ret = -EINVAL, irq = 0; |
c533120b | 682 | int type; |
1a8d4663 | 683 | |
1a8d4663 | 684 | if (!(s->state & SOCKET_PRESENT)) |
3939c1ef | 685 | return -ENODEV; |
dbb22f0d | 686 | c = p_dev->function_config; |
1a8d4663 | 687 | if (c->state & CONFIG_LOCKED) |
943f70f1 | 688 | return -EACCES; |
f958095e DB |
689 | if (c->state & CONFIG_IRQ_REQ) { |
690 | ds_dbg(s, 0, "IRQ already configured\n"); | |
691 | return -EBUSY; | |
692 | } | |
1a8d4663 | 693 | |
c533120b AC |
694 | /* Decide what type of interrupt we are registering */ |
695 | type = 0; | |
696 | if (s->functions > 1) /* All of this ought to be handled higher up */ | |
dace1453 | 697 | type = IRQF_SHARED; |
7bbfd39b | 698 | else if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) |
dace1453 | 699 | type = IRQF_SHARED; |
7bbfd39b | 700 | else printk(KERN_WARNING "pcmcia: Driver needs updating to support IRQ sharing.\n"); |
c533120b | 701 | |
1a8d4663 | 702 | #ifdef CONFIG_PCMCIA_PROBE |
635416ef AC |
703 | |
704 | #ifdef IRQ_NOAUTOEN | |
705 | /* if the underlying IRQ infrastructure allows for it, only allocate | |
706 | * the IRQ, but do not enable it | |
707 | */ | |
708 | if (!(req->Attributes & IRQ_HANDLE_PRESENT)) | |
709 | type |= IRQ_NOAUTOEN; | |
710 | #endif /* IRQ_NOAUTOEN */ | |
711 | ||
1a8d4663 DB |
712 | if (s->irq.AssignedIRQ != 0) { |
713 | /* If the interrupt is already assigned, it must be the same */ | |
714 | irq = s->irq.AssignedIRQ; | |
715 | } else { | |
716 | int try; | |
717 | u32 mask = s->irq_mask; | |
a1b274fb | 718 | void *data = &p_dev->dev.driver; /* something unique to this device */ |
1a8d4663 DB |
719 | |
720 | for (try = 0; try < 64; try++) { | |
721 | irq = try % 32; | |
722 | ||
723 | /* marked as available by driver, and not blocked by userspace? */ | |
724 | if (!((mask >> irq) & 1)) | |
725 | continue; | |
726 | ||
727 | /* avoid an IRQ which is already used by a PCMCIA card */ | |
728 | if ((try < 32) && pcmcia_used_irq[irq]) | |
729 | continue; | |
730 | ||
731 | /* register the correct driver, if possible, of check whether | |
732 | * registering a dummy handle works, i.e. if the IRQ isn't | |
733 | * marked as used by the kernel resource management core */ | |
734 | ret = request_irq(irq, | |
735 | (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action, | |
c533120b | 736 | type, |
bd65a685 | 737 | p_dev->devname, |
1a8d4663 DB |
738 | (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data); |
739 | if (!ret) { | |
740 | if (!(req->Attributes & IRQ_HANDLE_PRESENT)) | |
741 | free_irq(irq, data); | |
742 | break; | |
743 | } | |
744 | } | |
745 | } | |
746 | #endif | |
c181e0e0 DR |
747 | /* only assign PCI irq if no IRQ already assigned */ |
748 | if (ret && !s->irq.AssignedIRQ) { | |
1a8d4663 DB |
749 | if (!s->pci_irq) |
750 | return ret; | |
dace1453 | 751 | type = IRQF_SHARED; |
1a8d4663 DB |
752 | irq = s->pci_irq; |
753 | } | |
754 | ||
c533120b | 755 | if (ret && (req->Attributes & IRQ_HANDLE_PRESENT)) { |
f958095e DB |
756 | ret = request_irq(irq, req->Handler, type, |
757 | p_dev->devname, req->Instance); | |
758 | if (ret) | |
759 | return ret; | |
1a8d4663 DB |
760 | } |
761 | ||
c533120b | 762 | /* Make sure the fact the request type was overridden is passed back */ |
dace1453 | 763 | if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) { |
c533120b | 764 | req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING; |
ac449d6e DB |
765 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: " |
766 | "request for exclusive IRQ could not be fulfilled.\n"); | |
767 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver " | |
768 | "needs updating to supported shared IRQ lines.\n"); | |
c533120b | 769 | } |
1a8d4663 DB |
770 | c->irq.Attributes = req->Attributes; |
771 | s->irq.AssignedIRQ = req->AssignedIRQ = irq; | |
772 | s->irq.Config++; | |
773 | ||
774 | c->state |= CONFIG_IRQ_REQ; | |
e2d40963 | 775 | p_dev->_irq = 1; |
1a8d4663 DB |
776 | |
777 | #ifdef CONFIG_PCMCIA_PROBE | |
778 | pcmcia_used_irq[irq]++; | |
779 | #endif | |
780 | ||
4c89e88b | 781 | return 0; |
1a8d4663 DB |
782 | } /* pcmcia_request_irq */ |
783 | EXPORT_SYMBOL(pcmcia_request_irq); | |
784 | ||
785 | ||
786 | /** pcmcia_request_window | |
787 | * | |
788 | * Request_window() establishes a mapping between card memory space | |
789 | * and system memory space. | |
790 | */ | |
2bc5a9bd | 791 | int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh) |
1a8d4663 | 792 | { |
2bc5a9bd | 793 | struct pcmcia_socket *s = (*p_dev)->socket; |
1a8d4663 DB |
794 | window_t *win; |
795 | u_long align; | |
796 | int w; | |
797 | ||
1a8d4663 | 798 | if (!(s->state & SOCKET_PRESENT)) |
3939c1ef | 799 | return -ENODEV; |
610e2374 DB |
800 | if (req->Attributes & (WIN_PAGED | WIN_SHARED)) { |
801 | ds_dbg(s, 0, "bad attribute setting for iomem region\n"); | |
802 | return -EINVAL; | |
803 | } | |
1a8d4663 DB |
804 | |
805 | /* Window size defaults to smallest available */ | |
806 | if (req->Size == 0) | |
807 | req->Size = s->map_size; | |
808 | align = (((s->features & SS_CAP_MEM_ALIGN) || | |
809 | (req->Attributes & WIN_STRICT_ALIGN)) ? | |
810 | req->Size : s->map_size); | |
69ba4433 DB |
811 | if (req->Size & (s->map_size-1)) { |
812 | ds_dbg(s, 0, "invalid map size\n"); | |
813 | return -EINVAL; | |
814 | } | |
1a8d4663 | 815 | if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) || |
69ba4433 DB |
816 | (req->Base & (align-1))) { |
817 | ds_dbg(s, 0, "invalid base address\n"); | |
818 | return -EINVAL; | |
819 | } | |
1a8d4663 DB |
820 | if (req->Base) |
821 | align = 0; | |
822 | ||
823 | /* Allocate system memory window */ | |
824 | for (w = 0; w < MAX_WIN; w++) | |
825 | if (!(s->state & SOCKET_WIN_REQ(w))) break; | |
f958095e DB |
826 | if (w == MAX_WIN) { |
827 | ds_dbg(s, 0, "all windows are used already\n"); | |
828 | return -EINVAL; | |
829 | } | |
1a8d4663 DB |
830 | |
831 | win = &s->win[w]; | |
832 | win->magic = WINDOW_MAGIC; | |
833 | win->index = w; | |
2bc5a9bd | 834 | win->handle = *p_dev; |
1a8d4663 DB |
835 | win->sock = s; |
836 | ||
837 | if (!(s->features & SS_CAP_STATIC_MAP)) { | |
838 | win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align, | |
839 | (req->Attributes & WIN_MAP_BELOW_1MB), s); | |
f958095e DB |
840 | if (!win->ctl.res) { |
841 | ds_dbg(s, 0, "allocating mem region failed\n"); | |
842 | return -EINVAL; | |
843 | } | |
1a8d4663 | 844 | } |
e2d40963 | 845 | (*p_dev)->_win |= CLIENT_WIN_REQ(w); |
1a8d4663 DB |
846 | |
847 | /* Configure the socket controller */ | |
848 | win->ctl.map = w+1; | |
849 | win->ctl.flags = 0; | |
850 | win->ctl.speed = req->AccessSpeed; | |
851 | if (req->Attributes & WIN_MEMORY_TYPE) | |
852 | win->ctl.flags |= MAP_ATTRIB; | |
853 | if (req->Attributes & WIN_ENABLE) | |
854 | win->ctl.flags |= MAP_ACTIVE; | |
855 | if (req->Attributes & WIN_DATA_WIDTH_16) | |
856 | win->ctl.flags |= MAP_16BIT; | |
857 | if (req->Attributes & WIN_USE_WAIT) | |
858 | win->ctl.flags |= MAP_USE_WAIT; | |
859 | win->ctl.card_start = 0; | |
926c5402 DB |
860 | if (s->ops->set_mem_map(s, &win->ctl) != 0) { |
861 | ds_dbg(s, 0, "failed to set memory mapping\n"); | |
862 | return -EIO; | |
863 | } | |
1a8d4663 DB |
864 | s->state |= SOCKET_WIN_REQ(w); |
865 | ||
866 | /* Return window handle */ | |
867 | if (s->features & SS_CAP_STATIC_MAP) { | |
868 | req->Base = win->ctl.static_start; | |
869 | } else { | |
870 | req->Base = win->ctl.res->start; | |
871 | } | |
872 | *wh = win; | |
873 | ||
4c89e88b | 874 | return 0; |
1a8d4663 DB |
875 | } /* pcmcia_request_window */ |
876 | EXPORT_SYMBOL(pcmcia_request_window); | |
5f2a71fc DB |
877 | |
878 | void pcmcia_disable_device(struct pcmcia_device *p_dev) { | |
5f2a71fc | 879 | pcmcia_release_configuration(p_dev); |
fd238232 DB |
880 | pcmcia_release_io(p_dev, &p_dev->io); |
881 | pcmcia_release_irq(p_dev, &p_dev->irq); | |
c1ac0228 | 882 | if (p_dev->win) |
fd238232 | 883 | pcmcia_release_window(p_dev->win); |
5f2a71fc DB |
884 | } |
885 | EXPORT_SYMBOL(pcmcia_disable_device); | |
a804b574 DB |
886 | |
887 | ||
888 | struct pcmcia_cfg_mem { | |
91284224 DB |
889 | struct pcmcia_device *p_dev; |
890 | void *priv_data; | |
891 | int (*conf_check) (struct pcmcia_device *p_dev, | |
892 | cistpl_cftable_entry_t *cfg, | |
893 | cistpl_cftable_entry_t *dflt, | |
894 | unsigned int vcc, | |
895 | void *priv_data); | |
a804b574 | 896 | cisparse_t parse; |
8e2fc39d | 897 | cistpl_cftable_entry_t dflt; |
a804b574 DB |
898 | }; |
899 | ||
91284224 DB |
900 | /** |
901 | * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config() | |
902 | * | |
903 | * pcmcia_do_loop_config() is the internal callback for the call from | |
904 | * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred | |
905 | * by a struct pcmcia_cfg_mem. | |
906 | */ | |
907 | static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv) | |
908 | { | |
909 | cistpl_cftable_entry_t *cfg = &parse->cftable_entry; | |
910 | struct pcmcia_cfg_mem *cfg_mem = priv; | |
911 | ||
912 | /* default values */ | |
913 | cfg_mem->p_dev->conf.ConfigIndex = cfg->index; | |
914 | if (cfg->flags & CISTPL_CFTABLE_DEFAULT) | |
915 | cfg_mem->dflt = *cfg; | |
916 | ||
917 | return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt, | |
918 | cfg_mem->p_dev->socket->socket.Vcc, | |
919 | cfg_mem->priv_data); | |
920 | } | |
921 | ||
a804b574 DB |
922 | /** |
923 | * pcmcia_loop_config() - loop over configuration options | |
924 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
925 | * @conf_check: function to call for each configuration option. | |
926 | * It gets passed the struct pcmcia_device, the CIS data | |
927 | * describing the configuration option, and private data | |
928 | * being passed to pcmcia_loop_config() | |
929 | * @priv_data: private data to be passed to the conf_check function. | |
930 | * | |
931 | * pcmcia_loop_config() loops over all configuration options, and calls | |
932 | * the driver-specific conf_check() for each one, checking whether | |
889c2774 | 933 | * it is a valid one. Returns 0 on success or errorcode otherwise. |
a804b574 DB |
934 | */ |
935 | int pcmcia_loop_config(struct pcmcia_device *p_dev, | |
936 | int (*conf_check) (struct pcmcia_device *p_dev, | |
937 | cistpl_cftable_entry_t *cfg, | |
8e2fc39d | 938 | cistpl_cftable_entry_t *dflt, |
ad913c11 | 939 | unsigned int vcc, |
a804b574 DB |
940 | void *priv_data), |
941 | void *priv_data) | |
942 | { | |
943 | struct pcmcia_cfg_mem *cfg_mem; | |
889c2774 | 944 | int ret; |
a804b574 DB |
945 | |
946 | cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL); | |
947 | if (cfg_mem == NULL) | |
948 | return -ENOMEM; | |
949 | ||
91284224 DB |
950 | cfg_mem->p_dev = p_dev; |
951 | cfg_mem->conf_check = conf_check; | |
952 | cfg_mem->priv_data = priv_data; | |
ad913c11 | 953 | |
91284224 DB |
954 | ret = pccard_loop_tuple(p_dev->socket, p_dev->func, |
955 | CISTPL_CFTABLE_ENTRY, &cfg_mem->parse, | |
956 | cfg_mem, pcmcia_do_loop_config); | |
a804b574 | 957 | |
91284224 DB |
958 | kfree(cfg_mem); |
959 | return ret; | |
960 | } | |
961 | EXPORT_SYMBOL(pcmcia_loop_config); | |
498ac189 | 962 | |
a804b574 | 963 | |
91284224 DB |
964 | struct pcmcia_loop_mem { |
965 | struct pcmcia_device *p_dev; | |
966 | void *priv_data; | |
967 | int (*loop_tuple) (struct pcmcia_device *p_dev, | |
968 | tuple_t *tuple, | |
969 | void *priv_data); | |
970 | }; | |
a804b574 | 971 | |
91284224 DB |
972 | /** |
973 | * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config() | |
974 | * | |
975 | * pcmcia_do_loop_tuple() is the internal callback for the call from | |
976 | * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred | |
977 | * by a struct pcmcia_cfg_mem. | |
978 | */ | |
979 | static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv) | |
980 | { | |
981 | struct pcmcia_loop_mem *loop = priv; | |
498ac189 | 982 | |
91284224 DB |
983 | return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data); |
984 | }; | |
985 | ||
986 | /** | |
987 | * pcmcia_loop_tuple() - loop over tuples in the CIS | |
988 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
989 | * @code: which CIS code shall we look for? | |
990 | * @priv_data: private data to be passed to the loop_tuple function. | |
991 | * @loop_tuple: function to call for each CIS entry of type @function. IT | |
992 | * gets passed the raw tuple and @priv_data. | |
993 | * | |
994 | * pcmcia_loop_tuple() loops over all CIS entries of type @function, and | |
995 | * calls the @loop_tuple function for each entry. If the call to @loop_tuple | |
996 | * returns 0, the loop exits. Returns 0 on success or errorcode otherwise. | |
997 | */ | |
998 | int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code, | |
999 | int (*loop_tuple) (struct pcmcia_device *p_dev, | |
1000 | tuple_t *tuple, | |
1001 | void *priv_data), | |
1002 | void *priv_data) | |
1003 | { | |
1004 | struct pcmcia_loop_mem loop = { | |
1005 | .p_dev = p_dev, | |
1006 | .loop_tuple = loop_tuple, | |
1007 | .priv_data = priv_data}; | |
1008 | ||
1009 | return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL, | |
1010 | &loop, pcmcia_do_loop_tuple); | |
1011 | }; | |
1012 | EXPORT_SYMBOL(pcmcia_loop_tuple); | |
a804b574 | 1013 | |
91284224 DB |
1014 | |
1015 | struct pcmcia_loop_get { | |
1016 | size_t len; | |
1017 | cisdata_t **buf; | |
1018 | }; | |
1019 | ||
1020 | /** | |
1021 | * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple() | |
1022 | * | |
1023 | * pcmcia_do_get_tuple() is the internal callback for the call from | |
1024 | * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in | |
1025 | * the first tuple, return 0 unconditionally. Create a memory buffer large | |
1026 | * enough to hold the content of the tuple, and fill it with the tuple data. | |
1027 | * The caller is responsible to free the buffer. | |
1028 | */ | |
1029 | static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple, | |
1030 | void *priv) | |
1031 | { | |
1032 | struct pcmcia_loop_get *get = priv; | |
1033 | ||
1034 | *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL); | |
1035 | if (*get->buf) { | |
1036 | get->len = tuple->TupleDataLen; | |
1037 | memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen); | |
a804b574 | 1038 | } |
91284224 DB |
1039 | return 0; |
1040 | }; | |
1041 | ||
1042 | /** | |
1043 | * pcmcia_get_tuple() - get first tuple from CIS | |
1044 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
1045 | * @code: which CIS code shall we look for? | |
1046 | * @buf: pointer to store the buffer to. | |
1047 | * | |
1048 | * pcmcia_get_tuple() gets the content of the first CIS entry of type @code. | |
1049 | * It returns the buffer length (or zero). The caller is responsible to free | |
1050 | * the buffer passed in @buf. | |
1051 | */ | |
1052 | size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code, | |
1053 | unsigned char **buf) | |
1054 | { | |
1055 | struct pcmcia_loop_get get = { | |
1056 | .len = 0, | |
1057 | .buf = buf, | |
1058 | }; | |
1059 | ||
1060 | *get.buf = NULL; | |
1061 | pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get); | |
1062 | ||
1063 | return get.len; | |
1064 | }; | |
1065 | EXPORT_SYMBOL(pcmcia_get_tuple); | |
1066 | ||
1067 | ||
1068 | /** | |
1069 | * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis() | |
1070 | * | |
1071 | * pcmcia_do_get_mac() is the internal callback for the call from | |
1072 | * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the | |
1073 | * tuple contains a proper LAN_NODE_ID of length 6, and copy the data | |
1074 | * to struct net_device->dev_addr[i]. | |
1075 | */ | |
1076 | static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple, | |
1077 | void *priv) | |
1078 | { | |
1079 | struct net_device *dev = priv; | |
1080 | int i; | |
1081 | ||
1082 | if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID) | |
1083 | return -EINVAL; | |
1084 | if (tuple->TupleDataLen < ETH_ALEN + 2) { | |
1085 | dev_warn(&p_dev->dev, "Invalid CIS tuple length for " | |
1086 | "LAN_NODE_ID\n"); | |
1087 | return -EINVAL; | |
1088 | } | |
1089 | ||
1090 | if (tuple->TupleData[1] != ETH_ALEN) { | |
1091 | dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n"); | |
1092 | return -EINVAL; | |
1093 | } | |
1094 | for (i = 0; i < 6; i++) | |
1095 | dev->dev_addr[i] = tuple->TupleData[i+2]; | |
1096 | return 0; | |
1097 | }; | |
1098 | ||
1099 | /** | |
1100 | * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE | |
1101 | * @p_dev: the struct pcmcia_device for which we want the address. | |
1102 | * @dev: a properly prepared struct net_device to store the info to. | |
1103 | * | |
1104 | * pcmcia_get_mac_from_cis() reads out the hardware MAC address from | |
1105 | * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which | |
1106 | * must be set up properly by the driver (see examples!). | |
1107 | */ | |
1108 | int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev) | |
1109 | { | |
1110 | return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev); | |
1111 | }; | |
1112 | EXPORT_SYMBOL(pcmcia_get_mac_from_cis); | |
a804b574 | 1113 |