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1/*
2 * PCMCIA high-level CIS access 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) 2004-2010 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
17#include <linux/slab.h>
18#include <linux/module.h>
19#include <linux/kernel.h>
20#include <linux/netdevice.h>
21
22#include <pcmcia/cisreg.h>
23#include <pcmcia/cistpl.h>
24#include <pcmcia/ss.h>
25#include <pcmcia/ds.h>
26#include "cs_internal.h"
27
28
29/**
30 * pccard_read_tuple() - internal CIS tuple access
31 * @s: the struct pcmcia_socket where the card is inserted
32 * @function: the device function we loop for
33 * @code: which CIS code shall we look for?
34 * @parse: buffer where the tuple shall be parsed (or NULL, if no parse)
35 *
36 * pccard_read_tuple() reads out one tuple and attempts to parse it
37 */
38int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function,
39 cisdata_t code, void *parse)
40{
41 tuple_t tuple;
42 cisdata_t *buf;
43 int ret;
44
45 buf = kmalloc(256, GFP_KERNEL);
46 if (buf == NULL) {
47 dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n");
48 return -ENOMEM;
49 }
50 tuple.DesiredTuple = code;
51 tuple.Attributes = 0;
52 if (function == BIND_FN_ALL)
53 tuple.Attributes = TUPLE_RETURN_COMMON;
54 ret = pccard_get_first_tuple(s, function, &tuple);
55 if (ret != 0)
56 goto done;
57 tuple.TupleData = buf;
58 tuple.TupleOffset = 0;
59 tuple.TupleDataMax = 255;
60 ret = pccard_get_tuple_data(s, &tuple);
61 if (ret != 0)
62 goto done;
63 ret = pcmcia_parse_tuple(&tuple, parse);
64done:
65 kfree(buf);
66 return ret;
67}
68
69
70/**
71 * pccard_loop_tuple() - loop over tuples in the CIS
72 * @s: the struct pcmcia_socket where the card is inserted
73 * @function: the device function we loop for
74 * @code: which CIS code shall we look for?
75 * @parse: buffer where the tuple shall be parsed (or NULL, if no parse)
76 * @priv_data: private data to be passed to the loop_tuple function.
77 * @loop_tuple: function to call for each CIS entry of type @function. IT
78 * gets passed the raw tuple, the paresed tuple (if @parse is
79 * set) and @priv_data.
80 *
81 * pccard_loop_tuple() loops over all CIS entries of type @function, and
82 * calls the @loop_tuple function for each entry. If the call to @loop_tuple
83 * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
84 */
85int pccard_loop_tuple(struct pcmcia_socket *s, unsigned int function,
86 cisdata_t code, cisparse_t *parse, void *priv_data,
87 int (*loop_tuple) (tuple_t *tuple,
88 cisparse_t *parse,
89 void *priv_data))
90{
91 tuple_t tuple;
92 cisdata_t *buf;
93 int ret;
94
95 buf = kzalloc(256, GFP_KERNEL);
96 if (buf == NULL) {
97 dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n");
98 return -ENOMEM;
99 }
100
101 tuple.TupleData = buf;
102 tuple.TupleDataMax = 255;
103 tuple.TupleOffset = 0;
104 tuple.DesiredTuple = code;
105 tuple.Attributes = 0;
106
107 ret = pccard_get_first_tuple(s, function, &tuple);
108 while (!ret) {
109 if (pccard_get_tuple_data(s, &tuple))
110 goto next_entry;
111
112 if (parse)
113 if (pcmcia_parse_tuple(&tuple, parse))
114 goto next_entry;
115
116 ret = loop_tuple(&tuple, parse, priv_data);
117 if (!ret)
118 break;
119
120next_entry:
121 ret = pccard_get_next_tuple(s, function, &tuple);
122 }
123
124 kfree(buf);
125 return ret;
126}
127
128
129/**
130 * pcmcia_io_cfg_data_width() - convert cfgtable to data path width parameter
131 */
132static int pcmcia_io_cfg_data_width(unsigned int flags)
133{
134 if (!(flags & CISTPL_IO_8BIT))
135 return IO_DATA_PATH_WIDTH_16;
136 if (!(flags & CISTPL_IO_16BIT))
137 return IO_DATA_PATH_WIDTH_8;
138 return IO_DATA_PATH_WIDTH_AUTO;
139}
140
141
142struct pcmcia_cfg_mem {
143 struct pcmcia_device *p_dev;
144 int (*conf_check) (struct pcmcia_device *p_dev, void *priv_data);
145 void *priv_data;
146 cisparse_t parse;
147 cistpl_cftable_entry_t dflt;
148};
149
150/**
151 * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
152 *
153 * pcmcia_do_loop_config() is the internal callback for the call from
154 * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
155 * by a struct pcmcia_cfg_mem.
156 */
157static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv)
158{
159 struct pcmcia_cfg_mem *cfg_mem = priv;
160 struct pcmcia_device *p_dev = cfg_mem->p_dev;
161 cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
162 cistpl_cftable_entry_t *dflt = &cfg_mem->dflt;
163 unsigned int flags = p_dev->config_flags;
164 unsigned int vcc = p_dev->socket->socket.Vcc;
165
166 dev_dbg(&p_dev->dev, "testing configuration %x, autoconf %x\n",
167 cfg->index, flags);
168
169 /* default values */
170 cfg_mem->p_dev->config_index = cfg->index;
171 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
172 cfg_mem->dflt = *cfg;
173
174 /* check for matching Vcc? */
175 if (flags & CONF_AUTO_CHECK_VCC) {
176 if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
177 if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000)
178 return -ENODEV;
179 } else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) {
180 if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000)
181 return -ENODEV;
182 }
183 }
184
185 /* set Vpp? */
186 if (flags & CONF_AUTO_SET_VPP) {
187 if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
188 p_dev->vpp = cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
189 else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM))
190 p_dev->vpp =
191 dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000;
192 }
193
194 /* enable audio? */
195 if ((flags & CONF_AUTO_AUDIO) && (cfg->flags & CISTPL_CFTABLE_AUDIO))
196 p_dev->config_flags |= CONF_ENABLE_SPKR;
197
198
199 /* IO window settings? */
200 if (flags & CONF_AUTO_SET_IO) {
201 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
202 int i = 0;
203
204 p_dev->resource[0]->start = p_dev->resource[0]->end = 0;
205 p_dev->resource[1]->start = p_dev->resource[1]->end = 0;
206 if (io->nwin == 0)
207 return -ENODEV;
208
209 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
210 p_dev->resource[0]->flags |=
211 pcmcia_io_cfg_data_width(io->flags);
212 if (io->nwin > 1) {
213 /* For multifunction cards, by convention, we
214 * configure the network function with window 0,
215 * and serial with window 1 */
216 i = (io->win[1].len > io->win[0].len);
217 p_dev->resource[1]->flags = p_dev->resource[0]->flags;
218 p_dev->resource[1]->start = io->win[1-i].base;
219 p_dev->resource[1]->end = io->win[1-i].len;
220 }
221 p_dev->resource[0]->start = io->win[i].base;
222 p_dev->resource[0]->end = io->win[i].len;
223 p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK;
224 }
225
226 /* MEM window settings? */
227 if (flags & CONF_AUTO_SET_IOMEM) {
228 /* so far, we only set one memory window */
229 cistpl_mem_t *mem = (cfg->mem.nwin) ? &cfg->mem : &dflt->mem;
230
231 p_dev->resource[2]->start = p_dev->resource[2]->end = 0;
232 if (mem->nwin == 0)
233 return -ENODEV;
234
235 p_dev->resource[2]->start = mem->win[0].host_addr;
236 p_dev->resource[2]->end = mem->win[0].len;
237 if (p_dev->resource[2]->end < 0x1000)
238 p_dev->resource[2]->end = 0x1000;
239 p_dev->card_addr = mem->win[0].card_addr;
240 }
241
242 dev_dbg(&p_dev->dev,
243 "checking configuration %x: %pr %pr %pr (%d lines)\n",
244 p_dev->config_index, p_dev->resource[0], p_dev->resource[1],
245 p_dev->resource[2], p_dev->io_lines);
246
247 return cfg_mem->conf_check(p_dev, cfg_mem->priv_data);
248}
249
250/**
251 * pcmcia_loop_config() - loop over configuration options
252 * @p_dev: the struct pcmcia_device which we need to loop for.
253 * @conf_check: function to call for each configuration option.
254 * It gets passed the struct pcmcia_device and private data
255 * being passed to pcmcia_loop_config()
256 * @priv_data: private data to be passed to the conf_check function.
257 *
258 * pcmcia_loop_config() loops over all configuration options, and calls
259 * the driver-specific conf_check() for each one, checking whether
260 * it is a valid one. Returns 0 on success or errorcode otherwise.
261 */
262int pcmcia_loop_config(struct pcmcia_device *p_dev,
263 int (*conf_check) (struct pcmcia_device *p_dev,
264 void *priv_data),
265 void *priv_data)
266{
267 struct pcmcia_cfg_mem *cfg_mem;
268 int ret;
269
270 cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
271 if (cfg_mem == NULL)
272 return -ENOMEM;
273
274 cfg_mem->p_dev = p_dev;
275 cfg_mem->conf_check = conf_check;
276 cfg_mem->priv_data = priv_data;
277
278 ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
279 CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
280 cfg_mem, pcmcia_do_loop_config);
281
282 kfree(cfg_mem);
283 return ret;
284}
285EXPORT_SYMBOL(pcmcia_loop_config);
286
287
288struct pcmcia_loop_mem {
289 struct pcmcia_device *p_dev;
290 void *priv_data;
291 int (*loop_tuple) (struct pcmcia_device *p_dev,
292 tuple_t *tuple,
293 void *priv_data);
294};
295
296/**
297 * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
298 *
299 * pcmcia_do_loop_tuple() is the internal callback for the call from
300 * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
301 * by a struct pcmcia_cfg_mem.
302 */
303static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv)
304{
305 struct pcmcia_loop_mem *loop = priv;
306
307 return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
308};
309
310/**
311 * pcmcia_loop_tuple() - loop over tuples in the CIS
312 * @p_dev: the struct pcmcia_device which we need to loop for.
313 * @code: which CIS code shall we look for?
314 * @priv_data: private data to be passed to the loop_tuple function.
315 * @loop_tuple: function to call for each CIS entry of type @function. IT
316 * gets passed the raw tuple and @priv_data.
317 *
318 * pcmcia_loop_tuple() loops over all CIS entries of type @function, and
319 * calls the @loop_tuple function for each entry. If the call to @loop_tuple
320 * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
321 */
322int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
323 int (*loop_tuple) (struct pcmcia_device *p_dev,
324 tuple_t *tuple,
325 void *priv_data),
326 void *priv_data)
327{
328 struct pcmcia_loop_mem loop = {
329 .p_dev = p_dev,
330 .loop_tuple = loop_tuple,
331 .priv_data = priv_data};
332
333 return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
334 &loop, pcmcia_do_loop_tuple);
335}
336EXPORT_SYMBOL(pcmcia_loop_tuple);
337
338
339struct pcmcia_loop_get {
340 size_t len;
341 cisdata_t **buf;
342};
343
344/**
345 * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
346 *
347 * pcmcia_do_get_tuple() is the internal callback for the call from
348 * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
349 * the first tuple, return 0 unconditionally. Create a memory buffer large
350 * enough to hold the content of the tuple, and fill it with the tuple data.
351 * The caller is responsible to free the buffer.
352 */
353static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple,
354 void *priv)
355{
356 struct pcmcia_loop_get *get = priv;
357
358 *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
359 if (*get->buf) {
360 get->len = tuple->TupleDataLen;
361 memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
362 } else
363 dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
364 return 0;
365}
366
367/**
368 * pcmcia_get_tuple() - get first tuple from CIS
369 * @p_dev: the struct pcmcia_device which we need to loop for.
370 * @code: which CIS code shall we look for?
371 * @buf: pointer to store the buffer to.
372 *
373 * pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
374 * It returns the buffer length (or zero). The caller is responsible to free
375 * the buffer passed in @buf.
376 */
377size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
378 unsigned char **buf)
379{
380 struct pcmcia_loop_get get = {
381 .len = 0,
382 .buf = buf,
383 };
384
385 *get.buf = NULL;
386 pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);
387
388 return get.len;
389}
390EXPORT_SYMBOL(pcmcia_get_tuple);
391
392
393/**
394 * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
395 *
396 * pcmcia_do_get_mac() is the internal callback for the call from
397 * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
398 * tuple contains a proper LAN_NODE_ID of length 6, and copy the data
399 * to struct net_device->dev_addr[i].
400 */
401static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple,
402 void *priv)
403{
404 struct net_device *dev = priv;
405 int i;
406
407 if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
408 return -EINVAL;
409 if (tuple->TupleDataLen < ETH_ALEN + 2) {
410 dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
411 "LAN_NODE_ID\n");
412 return -EINVAL;
413 }
414
415 if (tuple->TupleData[1] != ETH_ALEN) {
416 dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
417 return -EINVAL;
418 }
419 for (i = 0; i < 6; i++)
420 dev->dev_addr[i] = tuple->TupleData[i+2];
421 return 0;
422}
423
424/**
425 * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
426 * @p_dev: the struct pcmcia_device for which we want the address.
427 * @dev: a properly prepared struct net_device to store the info to.
428 *
429 * pcmcia_get_mac_from_cis() reads out the hardware MAC address from
430 * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
431 * must be set up properly by the driver (see examples!).
432 */
433int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev)
434{
435 return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
436}
437EXPORT_SYMBOL(pcmcia_get_mac_from_cis);
438
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * PCMCIA high-level CIS access functions
4 *
5 * The initial developer of the original code is David A. Hinds
6 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
7 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
8 *
9 * Copyright (C) 1999 David A. Hinds
10 * Copyright (C) 2004-2010 Dominik Brodowski
11 */
12
13#include <linux/slab.h>
14#include <linux/module.h>
15#include <linux/kernel.h>
16#include <linux/netdevice.h>
17
18#include <pcmcia/cisreg.h>
19#include <pcmcia/cistpl.h>
20#include <pcmcia/ss.h>
21#include <pcmcia/ds.h>
22#include "cs_internal.h"
23
24
25/**
26 * pccard_read_tuple() - internal CIS tuple access
27 * @s: the struct pcmcia_socket where the card is inserted
28 * @function: the device function we loop for
29 * @code: which CIS code shall we look for?
30 * @parse: buffer where the tuple shall be parsed (or NULL, if no parse)
31 *
32 * pccard_read_tuple() reads out one tuple and attempts to parse it
33 */
34int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function,
35 cisdata_t code, void *parse)
36{
37 tuple_t tuple;
38 cisdata_t *buf;
39 int ret;
40
41 buf = kmalloc(256, GFP_KERNEL);
42 if (buf == NULL) {
43 dev_warn(&s->dev, "no memory to read tuple\n");
44 return -ENOMEM;
45 }
46 tuple.DesiredTuple = code;
47 tuple.Attributes = 0;
48 if (function == BIND_FN_ALL)
49 tuple.Attributes = TUPLE_RETURN_COMMON;
50 ret = pccard_get_first_tuple(s, function, &tuple);
51 if (ret != 0)
52 goto done;
53 tuple.TupleData = buf;
54 tuple.TupleOffset = 0;
55 tuple.TupleDataMax = 255;
56 ret = pccard_get_tuple_data(s, &tuple);
57 if (ret != 0)
58 goto done;
59 ret = pcmcia_parse_tuple(&tuple, parse);
60done:
61 kfree(buf);
62 return ret;
63}
64
65
66/**
67 * pccard_loop_tuple() - loop over tuples in the CIS
68 * @s: the struct pcmcia_socket where the card is inserted
69 * @function: the device function we loop for
70 * @code: which CIS code shall we look for?
71 * @parse: buffer where the tuple shall be parsed (or NULL, if no parse)
72 * @priv_data: private data to be passed to the loop_tuple function.
73 * @loop_tuple: function to call for each CIS entry of type @function. IT
74 * gets passed the raw tuple, the paresed tuple (if @parse is
75 * set) and @priv_data.
76 *
77 * pccard_loop_tuple() loops over all CIS entries of type @function, and
78 * calls the @loop_tuple function for each entry. If the call to @loop_tuple
79 * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
80 */
81static int pccard_loop_tuple(struct pcmcia_socket *s, unsigned int function,
82 cisdata_t code, cisparse_t *parse, void *priv_data,
83 int (*loop_tuple) (tuple_t *tuple,
84 cisparse_t *parse,
85 void *priv_data))
86{
87 tuple_t tuple;
88 cisdata_t *buf;
89 int ret;
90
91 buf = kzalloc(256, GFP_KERNEL);
92 if (buf == NULL) {
93 dev_warn(&s->dev, "no memory to read tuple\n");
94 return -ENOMEM;
95 }
96
97 tuple.TupleData = buf;
98 tuple.TupleDataMax = 255;
99 tuple.TupleOffset = 0;
100 tuple.DesiredTuple = code;
101 tuple.Attributes = 0;
102
103 ret = pccard_get_first_tuple(s, function, &tuple);
104 while (!ret) {
105 if (pccard_get_tuple_data(s, &tuple))
106 goto next_entry;
107
108 if (parse)
109 if (pcmcia_parse_tuple(&tuple, parse))
110 goto next_entry;
111
112 ret = loop_tuple(&tuple, parse, priv_data);
113 if (!ret)
114 break;
115
116next_entry:
117 ret = pccard_get_next_tuple(s, function, &tuple);
118 }
119
120 kfree(buf);
121 return ret;
122}
123
124
125/*
126 * pcmcia_io_cfg_data_width() - convert cfgtable to data path width parameter
127 */
128static int pcmcia_io_cfg_data_width(unsigned int flags)
129{
130 if (!(flags & CISTPL_IO_8BIT))
131 return IO_DATA_PATH_WIDTH_16;
132 if (!(flags & CISTPL_IO_16BIT))
133 return IO_DATA_PATH_WIDTH_8;
134 return IO_DATA_PATH_WIDTH_AUTO;
135}
136
137
138struct pcmcia_cfg_mem {
139 struct pcmcia_device *p_dev;
140 int (*conf_check) (struct pcmcia_device *p_dev, void *priv_data);
141 void *priv_data;
142 cisparse_t parse;
143 cistpl_cftable_entry_t dflt;
144};
145
146/*
147 * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
148 *
149 * pcmcia_do_loop_config() is the internal callback for the call from
150 * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
151 * by a struct pcmcia_cfg_mem.
152 */
153static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv)
154{
155 struct pcmcia_cfg_mem *cfg_mem = priv;
156 struct pcmcia_device *p_dev = cfg_mem->p_dev;
157 cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
158 cistpl_cftable_entry_t *dflt = &cfg_mem->dflt;
159 unsigned int flags = p_dev->config_flags;
160 unsigned int vcc = p_dev->socket->socket.Vcc;
161
162 dev_dbg(&p_dev->dev, "testing configuration %x, autoconf %x\n",
163 cfg->index, flags);
164
165 /* default values */
166 cfg_mem->p_dev->config_index = cfg->index;
167 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
168 cfg_mem->dflt = *cfg;
169
170 /* check for matching Vcc? */
171 if (flags & CONF_AUTO_CHECK_VCC) {
172 if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
173 if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000)
174 return -ENODEV;
175 } else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) {
176 if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000)
177 return -ENODEV;
178 }
179 }
180
181 /* set Vpp? */
182 if (flags & CONF_AUTO_SET_VPP) {
183 if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
184 p_dev->vpp = cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
185 else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM))
186 p_dev->vpp =
187 dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000;
188 }
189
190 /* enable audio? */
191 if ((flags & CONF_AUTO_AUDIO) && (cfg->flags & CISTPL_CFTABLE_AUDIO))
192 p_dev->config_flags |= CONF_ENABLE_SPKR;
193
194
195 /* IO window settings? */
196 if (flags & CONF_AUTO_SET_IO) {
197 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
198 int i = 0;
199
200 p_dev->resource[0]->start = p_dev->resource[0]->end = 0;
201 p_dev->resource[1]->start = p_dev->resource[1]->end = 0;
202 if (io->nwin == 0)
203 return -ENODEV;
204
205 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
206 p_dev->resource[0]->flags |=
207 pcmcia_io_cfg_data_width(io->flags);
208 if (io->nwin > 1) {
209 /* For multifunction cards, by convention, we
210 * configure the network function with window 0,
211 * and serial with window 1 */
212 i = (io->win[1].len > io->win[0].len);
213 p_dev->resource[1]->flags = p_dev->resource[0]->flags;
214 p_dev->resource[1]->start = io->win[1-i].base;
215 p_dev->resource[1]->end = io->win[1-i].len;
216 }
217 p_dev->resource[0]->start = io->win[i].base;
218 p_dev->resource[0]->end = io->win[i].len;
219 p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK;
220 }
221
222 /* MEM window settings? */
223 if (flags & CONF_AUTO_SET_IOMEM) {
224 /* so far, we only set one memory window */
225 cistpl_mem_t *mem = (cfg->mem.nwin) ? &cfg->mem : &dflt->mem;
226
227 p_dev->resource[2]->start = p_dev->resource[2]->end = 0;
228 if (mem->nwin == 0)
229 return -ENODEV;
230
231 p_dev->resource[2]->start = mem->win[0].host_addr;
232 p_dev->resource[2]->end = mem->win[0].len;
233 if (p_dev->resource[2]->end < 0x1000)
234 p_dev->resource[2]->end = 0x1000;
235 p_dev->card_addr = mem->win[0].card_addr;
236 }
237
238 dev_dbg(&p_dev->dev,
239 "checking configuration %x: %pr %pr %pr (%d lines)\n",
240 p_dev->config_index, p_dev->resource[0], p_dev->resource[1],
241 p_dev->resource[2], p_dev->io_lines);
242
243 return cfg_mem->conf_check(p_dev, cfg_mem->priv_data);
244}
245
246/**
247 * pcmcia_loop_config() - loop over configuration options
248 * @p_dev: the struct pcmcia_device which we need to loop for.
249 * @conf_check: function to call for each configuration option.
250 * It gets passed the struct pcmcia_device and private data
251 * being passed to pcmcia_loop_config()
252 * @priv_data: private data to be passed to the conf_check function.
253 *
254 * pcmcia_loop_config() loops over all configuration options, and calls
255 * the driver-specific conf_check() for each one, checking whether
256 * it is a valid one. Returns 0 on success or errorcode otherwise.
257 */
258int pcmcia_loop_config(struct pcmcia_device *p_dev,
259 int (*conf_check) (struct pcmcia_device *p_dev,
260 void *priv_data),
261 void *priv_data)
262{
263 struct pcmcia_cfg_mem *cfg_mem;
264 int ret;
265
266 cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
267 if (cfg_mem == NULL)
268 return -ENOMEM;
269
270 cfg_mem->p_dev = p_dev;
271 cfg_mem->conf_check = conf_check;
272 cfg_mem->priv_data = priv_data;
273
274 ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
275 CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
276 cfg_mem, pcmcia_do_loop_config);
277
278 kfree(cfg_mem);
279 return ret;
280}
281EXPORT_SYMBOL(pcmcia_loop_config);
282
283
284struct pcmcia_loop_mem {
285 struct pcmcia_device *p_dev;
286 void *priv_data;
287 int (*loop_tuple) (struct pcmcia_device *p_dev,
288 tuple_t *tuple,
289 void *priv_data);
290};
291
292/*
293 * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
294 *
295 * pcmcia_do_loop_tuple() is the internal callback for the call from
296 * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
297 * by a struct pcmcia_cfg_mem.
298 */
299static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv)
300{
301 struct pcmcia_loop_mem *loop = priv;
302
303 return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
304};
305
306/**
307 * pcmcia_loop_tuple() - loop over tuples in the CIS
308 * @p_dev: the struct pcmcia_device which we need to loop for.
309 * @code: which CIS code shall we look for?
310 * @priv_data: private data to be passed to the loop_tuple function.
311 * @loop_tuple: function to call for each CIS entry of type @function. IT
312 * gets passed the raw tuple and @priv_data.
313 *
314 * pcmcia_loop_tuple() loops over all CIS entries of type @function, and
315 * calls the @loop_tuple function for each entry. If the call to @loop_tuple
316 * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
317 */
318int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
319 int (*loop_tuple) (struct pcmcia_device *p_dev,
320 tuple_t *tuple,
321 void *priv_data),
322 void *priv_data)
323{
324 struct pcmcia_loop_mem loop = {
325 .p_dev = p_dev,
326 .loop_tuple = loop_tuple,
327 .priv_data = priv_data};
328
329 return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
330 &loop, pcmcia_do_loop_tuple);
331}
332EXPORT_SYMBOL(pcmcia_loop_tuple);
333
334
335struct pcmcia_loop_get {
336 size_t len;
337 cisdata_t **buf;
338};
339
340/*
341 * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
342 *
343 * pcmcia_do_get_tuple() is the internal callback for the call from
344 * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
345 * the first tuple, return 0 unconditionally. Create a memory buffer large
346 * enough to hold the content of the tuple, and fill it with the tuple data.
347 * The caller is responsible to free the buffer.
348 */
349static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple,
350 void *priv)
351{
352 struct pcmcia_loop_get *get = priv;
353
354 *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
355 if (*get->buf) {
356 get->len = tuple->TupleDataLen;
357 memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
358 } else
359 dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
360 return 0;
361}
362
363/**
364 * pcmcia_get_tuple() - get first tuple from CIS
365 * @p_dev: the struct pcmcia_device which we need to loop for.
366 * @code: which CIS code shall we look for?
367 * @buf: pointer to store the buffer to.
368 *
369 * pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
370 * It returns the buffer length (or zero). The caller is responsible to free
371 * the buffer passed in @buf.
372 */
373size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
374 unsigned char **buf)
375{
376 struct pcmcia_loop_get get = {
377 .len = 0,
378 .buf = buf,
379 };
380
381 *get.buf = NULL;
382 pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);
383
384 return get.len;
385}
386EXPORT_SYMBOL(pcmcia_get_tuple);
387
388
389/*
390 * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
391 *
392 * pcmcia_do_get_mac() is the internal callback for the call from
393 * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
394 * tuple contains a proper LAN_NODE_ID of length 6, and copy the data
395 * to struct net_device->dev_addr[i].
396 */
397static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple,
398 void *priv)
399{
400 struct net_device *dev = priv;
401 int i;
402
403 if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
404 return -EINVAL;
405 if (tuple->TupleDataLen < ETH_ALEN + 2) {
406 dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
407 "LAN_NODE_ID\n");
408 return -EINVAL;
409 }
410
411 if (tuple->TupleData[1] != ETH_ALEN) {
412 dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
413 return -EINVAL;
414 }
415 for (i = 0; i < 6; i++)
416 dev->dev_addr[i] = tuple->TupleData[i+2];
417 return 0;
418}
419
420/**
421 * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
422 * @p_dev: the struct pcmcia_device for which we want the address.
423 * @dev: a properly prepared struct net_device to store the info to.
424 *
425 * pcmcia_get_mac_from_cis() reads out the hardware MAC address from
426 * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
427 * must be set up properly by the driver (see examples!).
428 */
429int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev)
430{
431 return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
432}
433EXPORT_SYMBOL(pcmcia_get_mac_from_cis);
434