Thomas Gleixner | d2912cb | 2019-06-04 10:11:33 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 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 |
Dominik Brodowski | 00990e7 | 2010-07-30 13:13:46 +0200 | [diff] [blame] | 10 | * Copyright (C) 2004-2010 Dominik Brodowski |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 11 | */ |
| 12 | |
Tejun Heo | 6d59622 | 2010-03-30 02:52:37 +0900 | [diff] [blame] | 13 | #include <linux/slab.h> |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 14 | #include <linux/module.h> |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/netdevice.h> |
Jakub Kicinski | 562ef98 | 2021-10-13 13:44:34 -0700 | [diff] [blame] | 17 | #include <linux/etherdevice.h> |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 18 | |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 19 | #include <pcmcia/cisreg.h> |
| 20 | #include <pcmcia/cistpl.h> |
| 21 | #include <pcmcia/ss.h> |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 22 | #include <pcmcia/ds.h> |
| 23 | #include "cs_internal.h" |
| 24 | |
| 25 | |
| 26 | /** |
| 27 | * pccard_read_tuple() - internal CIS tuple access |
| 28 | * @s: the struct pcmcia_socket where the card is inserted |
| 29 | * @function: the device function we loop for |
| 30 | * @code: which CIS code shall we look for? |
| 31 | * @parse: buffer where the tuple shall be parsed (or NULL, if no parse) |
| 32 | * |
| 33 | * pccard_read_tuple() reads out one tuple and attempts to parse it |
| 34 | */ |
| 35 | int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, |
| 36 | cisdata_t code, void *parse) |
| 37 | { |
| 38 | tuple_t tuple; |
| 39 | cisdata_t *buf; |
| 40 | int ret; |
| 41 | |
| 42 | buf = kmalloc(256, GFP_KERNEL); |
| 43 | if (buf == NULL) { |
Joe Perches | f2e6cf7 | 2014-10-10 09:12:47 -0700 | [diff] [blame] | 44 | dev_warn(&s->dev, "no memory to read tuple\n"); |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 45 | return -ENOMEM; |
| 46 | } |
| 47 | tuple.DesiredTuple = code; |
| 48 | tuple.Attributes = 0; |
| 49 | if (function == BIND_FN_ALL) |
| 50 | tuple.Attributes = TUPLE_RETURN_COMMON; |
| 51 | ret = pccard_get_first_tuple(s, function, &tuple); |
| 52 | if (ret != 0) |
| 53 | goto done; |
| 54 | tuple.TupleData = buf; |
| 55 | tuple.TupleOffset = 0; |
| 56 | tuple.TupleDataMax = 255; |
| 57 | ret = pccard_get_tuple_data(s, &tuple); |
| 58 | if (ret != 0) |
| 59 | goto done; |
| 60 | ret = pcmcia_parse_tuple(&tuple, parse); |
| 61 | done: |
| 62 | kfree(buf); |
| 63 | return ret; |
| 64 | } |
| 65 | |
| 66 | |
| 67 | /** |
| 68 | * pccard_loop_tuple() - loop over tuples in the CIS |
| 69 | * @s: the struct pcmcia_socket where the card is inserted |
| 70 | * @function: the device function we loop for |
| 71 | * @code: which CIS code shall we look for? |
| 72 | * @parse: buffer where the tuple shall be parsed (or NULL, if no parse) |
| 73 | * @priv_data: private data to be passed to the loop_tuple function. |
| 74 | * @loop_tuple: function to call for each CIS entry of type @function. IT |
| 75 | * gets passed the raw tuple, the paresed tuple (if @parse is |
| 76 | * set) and @priv_data. |
| 77 | * |
| 78 | * pccard_loop_tuple() loops over all CIS entries of type @function, and |
| 79 | * calls the @loop_tuple function for each entry. If the call to @loop_tuple |
| 80 | * returns 0, the loop exits. Returns 0 on success or errorcode otherwise. |
| 81 | */ |
Dominik Brodowski | 46d0797 | 2020-05-18 10:58:50 +0200 | [diff] [blame] | 82 | static int pccard_loop_tuple(struct pcmcia_socket *s, unsigned int function, |
| 83 | cisdata_t code, cisparse_t *parse, void *priv_data, |
| 84 | int (*loop_tuple) (tuple_t *tuple, |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 85 | cisparse_t *parse, |
| 86 | void *priv_data)) |
| 87 | { |
| 88 | tuple_t tuple; |
| 89 | cisdata_t *buf; |
| 90 | int ret; |
| 91 | |
| 92 | buf = kzalloc(256, GFP_KERNEL); |
| 93 | if (buf == NULL) { |
Joe Perches | f2e6cf7 | 2014-10-10 09:12:47 -0700 | [diff] [blame] | 94 | dev_warn(&s->dev, "no memory to read tuple\n"); |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 95 | return -ENOMEM; |
| 96 | } |
| 97 | |
| 98 | tuple.TupleData = buf; |
| 99 | tuple.TupleDataMax = 255; |
| 100 | tuple.TupleOffset = 0; |
| 101 | tuple.DesiredTuple = code; |
| 102 | tuple.Attributes = 0; |
| 103 | |
| 104 | ret = pccard_get_first_tuple(s, function, &tuple); |
| 105 | while (!ret) { |
| 106 | if (pccard_get_tuple_data(s, &tuple)) |
| 107 | goto next_entry; |
| 108 | |
| 109 | if (parse) |
| 110 | if (pcmcia_parse_tuple(&tuple, parse)) |
| 111 | goto next_entry; |
| 112 | |
| 113 | ret = loop_tuple(&tuple, parse, priv_data); |
| 114 | if (!ret) |
| 115 | break; |
| 116 | |
| 117 | next_entry: |
| 118 | ret = pccard_get_next_tuple(s, function, &tuple); |
| 119 | } |
| 120 | |
| 121 | kfree(buf); |
| 122 | return ret; |
| 123 | } |
| 124 | |
Dominik Brodowski | 00990e7 | 2010-07-30 13:13:46 +0200 | [diff] [blame] | 125 | |
Lee Jones | f4468bb | 2021-03-12 11:02:36 +0000 | [diff] [blame] | 126 | /* |
Dominik Brodowski | 00990e7 | 2010-07-30 13:13:46 +0200 | [diff] [blame] | 127 | * pcmcia_io_cfg_data_width() - convert cfgtable to data path width parameter |
| 128 | */ |
| 129 | static int pcmcia_io_cfg_data_width(unsigned int flags) |
| 130 | { |
| 131 | if (!(flags & CISTPL_IO_8BIT)) |
| 132 | return IO_DATA_PATH_WIDTH_16; |
| 133 | if (!(flags & CISTPL_IO_16BIT)) |
| 134 | return IO_DATA_PATH_WIDTH_8; |
| 135 | return IO_DATA_PATH_WIDTH_AUTO; |
| 136 | } |
| 137 | |
| 138 | |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 139 | struct pcmcia_cfg_mem { |
| 140 | struct pcmcia_device *p_dev; |
Dominik Brodowski | 00990e7 | 2010-07-30 13:13:46 +0200 | [diff] [blame] | 141 | int (*conf_check) (struct pcmcia_device *p_dev, void *priv_data); |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 142 | void *priv_data; |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 143 | cisparse_t parse; |
| 144 | cistpl_cftable_entry_t dflt; |
| 145 | }; |
| 146 | |
Lee Jones | f4468bb | 2021-03-12 11:02:36 +0000 | [diff] [blame] | 147 | /* |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 148 | * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config() |
| 149 | * |
| 150 | * pcmcia_do_loop_config() is the internal callback for the call from |
| 151 | * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred |
| 152 | * by a struct pcmcia_cfg_mem. |
| 153 | */ |
| 154 | static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv) |
| 155 | { |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 156 | struct pcmcia_cfg_mem *cfg_mem = priv; |
Dominik Brodowski | 440eed4 | 2010-07-30 09:51:52 +0200 | [diff] [blame] | 157 | struct pcmcia_device *p_dev = cfg_mem->p_dev; |
| 158 | cistpl_cftable_entry_t *cfg = &parse->cftable_entry; |
| 159 | cistpl_cftable_entry_t *dflt = &cfg_mem->dflt; |
| 160 | unsigned int flags = p_dev->config_flags; |
| 161 | unsigned int vcc = p_dev->socket->socket.Vcc; |
| 162 | |
| 163 | dev_dbg(&p_dev->dev, "testing configuration %x, autoconf %x\n", |
| 164 | cfg->index, flags); |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 165 | |
| 166 | /* default values */ |
Dominik Brodowski | 7feabb6 | 2010-07-29 18:35:47 +0200 | [diff] [blame] | 167 | cfg_mem->p_dev->config_index = cfg->index; |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 168 | if (cfg->flags & CISTPL_CFTABLE_DEFAULT) |
| 169 | cfg_mem->dflt = *cfg; |
| 170 | |
Dominik Brodowski | 440eed4 | 2010-07-30 09:51:52 +0200 | [diff] [blame] | 171 | /* check for matching Vcc? */ |
| 172 | if (flags & CONF_AUTO_CHECK_VCC) { |
| 173 | if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) { |
| 174 | if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) |
| 175 | return -ENODEV; |
| 176 | } else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) { |
| 177 | if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000) |
| 178 | return -ENODEV; |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | /* set Vpp? */ |
| 183 | if (flags & CONF_AUTO_SET_VPP) { |
| 184 | if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM)) |
| 185 | p_dev->vpp = cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000; |
| 186 | else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM)) |
| 187 | p_dev->vpp = |
| 188 | dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000; |
| 189 | } |
| 190 | |
| 191 | /* enable audio? */ |
| 192 | if ((flags & CONF_AUTO_AUDIO) && (cfg->flags & CISTPL_CFTABLE_AUDIO)) |
| 193 | p_dev->config_flags |= CONF_ENABLE_SPKR; |
| 194 | |
Dominik Brodowski | 00990e7 | 2010-07-30 13:13:46 +0200 | [diff] [blame] | 195 | |
| 196 | /* IO window settings? */ |
| 197 | if (flags & CONF_AUTO_SET_IO) { |
| 198 | cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; |
| 199 | int i = 0; |
| 200 | |
| 201 | p_dev->resource[0]->start = p_dev->resource[0]->end = 0; |
| 202 | p_dev->resource[1]->start = p_dev->resource[1]->end = 0; |
| 203 | if (io->nwin == 0) |
| 204 | return -ENODEV; |
| 205 | |
| 206 | p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; |
| 207 | p_dev->resource[0]->flags |= |
| 208 | pcmcia_io_cfg_data_width(io->flags); |
| 209 | if (io->nwin > 1) { |
| 210 | /* For multifunction cards, by convention, we |
| 211 | * configure the network function with window 0, |
| 212 | * and serial with window 1 */ |
| 213 | i = (io->win[1].len > io->win[0].len); |
| 214 | p_dev->resource[1]->flags = p_dev->resource[0]->flags; |
| 215 | p_dev->resource[1]->start = io->win[1-i].base; |
| 216 | p_dev->resource[1]->end = io->win[1-i].len; |
| 217 | } |
| 218 | p_dev->resource[0]->start = io->win[i].base; |
| 219 | p_dev->resource[0]->end = io->win[i].len; |
| 220 | p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; |
| 221 | } |
| 222 | |
| 223 | /* MEM window settings? */ |
| 224 | if (flags & CONF_AUTO_SET_IOMEM) { |
| 225 | /* so far, we only set one memory window */ |
| 226 | cistpl_mem_t *mem = (cfg->mem.nwin) ? &cfg->mem : &dflt->mem; |
| 227 | |
| 228 | p_dev->resource[2]->start = p_dev->resource[2]->end = 0; |
| 229 | if (mem->nwin == 0) |
| 230 | return -ENODEV; |
| 231 | |
| 232 | p_dev->resource[2]->start = mem->win[0].host_addr; |
| 233 | p_dev->resource[2]->end = mem->win[0].len; |
| 234 | if (p_dev->resource[2]->end < 0x1000) |
| 235 | p_dev->resource[2]->end = 0x1000; |
| 236 | p_dev->card_addr = mem->win[0].card_addr; |
| 237 | } |
| 238 | |
| 239 | dev_dbg(&p_dev->dev, |
| 240 | "checking configuration %x: %pr %pr %pr (%d lines)\n", |
| 241 | p_dev->config_index, p_dev->resource[0], p_dev->resource[1], |
| 242 | p_dev->resource[2], p_dev->io_lines); |
| 243 | |
| 244 | return cfg_mem->conf_check(p_dev, cfg_mem->priv_data); |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 245 | } |
| 246 | |
| 247 | /** |
| 248 | * pcmcia_loop_config() - loop over configuration options |
| 249 | * @p_dev: the struct pcmcia_device which we need to loop for. |
| 250 | * @conf_check: function to call for each configuration option. |
Dominik Brodowski | 00990e7 | 2010-07-30 13:13:46 +0200 | [diff] [blame] | 251 | * It gets passed the struct pcmcia_device and private data |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 252 | * being passed to pcmcia_loop_config() |
| 253 | * @priv_data: private data to be passed to the conf_check function. |
| 254 | * |
| 255 | * pcmcia_loop_config() loops over all configuration options, and calls |
| 256 | * the driver-specific conf_check() for each one, checking whether |
| 257 | * it is a valid one. Returns 0 on success or errorcode otherwise. |
| 258 | */ |
| 259 | int pcmcia_loop_config(struct pcmcia_device *p_dev, |
| 260 | int (*conf_check) (struct pcmcia_device *p_dev, |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 261 | void *priv_data), |
| 262 | void *priv_data) |
| 263 | { |
| 264 | struct pcmcia_cfg_mem *cfg_mem; |
| 265 | int ret; |
| 266 | |
| 267 | cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL); |
| 268 | if (cfg_mem == NULL) |
| 269 | return -ENOMEM; |
| 270 | |
| 271 | cfg_mem->p_dev = p_dev; |
| 272 | cfg_mem->conf_check = conf_check; |
| 273 | cfg_mem->priv_data = priv_data; |
| 274 | |
| 275 | ret = pccard_loop_tuple(p_dev->socket, p_dev->func, |
| 276 | CISTPL_CFTABLE_ENTRY, &cfg_mem->parse, |
| 277 | cfg_mem, pcmcia_do_loop_config); |
| 278 | |
| 279 | kfree(cfg_mem); |
| 280 | return ret; |
| 281 | } |
| 282 | EXPORT_SYMBOL(pcmcia_loop_config); |
| 283 | |
| 284 | |
| 285 | struct pcmcia_loop_mem { |
| 286 | struct pcmcia_device *p_dev; |
| 287 | void *priv_data; |
| 288 | int (*loop_tuple) (struct pcmcia_device *p_dev, |
| 289 | tuple_t *tuple, |
| 290 | void *priv_data); |
| 291 | }; |
| 292 | |
Lee Jones | f4468bb | 2021-03-12 11:02:36 +0000 | [diff] [blame] | 293 | /* |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 294 | * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config() |
| 295 | * |
| 296 | * pcmcia_do_loop_tuple() is the internal callback for the call from |
| 297 | * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred |
| 298 | * by a struct pcmcia_cfg_mem. |
| 299 | */ |
| 300 | static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv) |
| 301 | { |
| 302 | struct pcmcia_loop_mem *loop = priv; |
| 303 | |
| 304 | return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data); |
| 305 | }; |
| 306 | |
| 307 | /** |
| 308 | * pcmcia_loop_tuple() - loop over tuples in the CIS |
| 309 | * @p_dev: the struct pcmcia_device which we need to loop for. |
| 310 | * @code: which CIS code shall we look for? |
| 311 | * @priv_data: private data to be passed to the loop_tuple function. |
| 312 | * @loop_tuple: function to call for each CIS entry of type @function. IT |
| 313 | * gets passed the raw tuple and @priv_data. |
| 314 | * |
| 315 | * pcmcia_loop_tuple() loops over all CIS entries of type @function, and |
| 316 | * calls the @loop_tuple function for each entry. If the call to @loop_tuple |
| 317 | * returns 0, the loop exits. Returns 0 on success or errorcode otherwise. |
| 318 | */ |
| 319 | int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code, |
| 320 | int (*loop_tuple) (struct pcmcia_device *p_dev, |
| 321 | tuple_t *tuple, |
| 322 | void *priv_data), |
| 323 | void *priv_data) |
| 324 | { |
| 325 | struct pcmcia_loop_mem loop = { |
| 326 | .p_dev = p_dev, |
| 327 | .loop_tuple = loop_tuple, |
| 328 | .priv_data = priv_data}; |
| 329 | |
| 330 | return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL, |
| 331 | &loop, pcmcia_do_loop_tuple); |
| 332 | } |
| 333 | EXPORT_SYMBOL(pcmcia_loop_tuple); |
| 334 | |
| 335 | |
| 336 | struct pcmcia_loop_get { |
| 337 | size_t len; |
| 338 | cisdata_t **buf; |
| 339 | }; |
| 340 | |
Lee Jones | f4468bb | 2021-03-12 11:02:36 +0000 | [diff] [blame] | 341 | /* |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 342 | * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple() |
| 343 | * |
| 344 | * pcmcia_do_get_tuple() is the internal callback for the call from |
| 345 | * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in |
| 346 | * the first tuple, return 0 unconditionally. Create a memory buffer large |
| 347 | * enough to hold the content of the tuple, and fill it with the tuple data. |
| 348 | * The caller is responsible to free the buffer. |
| 349 | */ |
| 350 | static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple, |
| 351 | void *priv) |
| 352 | { |
| 353 | struct pcmcia_loop_get *get = priv; |
| 354 | |
| 355 | *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL); |
| 356 | if (*get->buf) { |
| 357 | get->len = tuple->TupleDataLen; |
| 358 | memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen); |
| 359 | } else |
| 360 | dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n"); |
| 361 | return 0; |
| 362 | } |
| 363 | |
| 364 | /** |
| 365 | * pcmcia_get_tuple() - get first tuple from CIS |
| 366 | * @p_dev: the struct pcmcia_device which we need to loop for. |
| 367 | * @code: which CIS code shall we look for? |
| 368 | * @buf: pointer to store the buffer to. |
| 369 | * |
| 370 | * pcmcia_get_tuple() gets the content of the first CIS entry of type @code. |
| 371 | * It returns the buffer length (or zero). The caller is responsible to free |
| 372 | * the buffer passed in @buf. |
| 373 | */ |
| 374 | size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code, |
| 375 | unsigned char **buf) |
| 376 | { |
| 377 | struct pcmcia_loop_get get = { |
| 378 | .len = 0, |
| 379 | .buf = buf, |
| 380 | }; |
| 381 | |
| 382 | *get.buf = NULL; |
| 383 | pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get); |
| 384 | |
| 385 | return get.len; |
| 386 | } |
| 387 | EXPORT_SYMBOL(pcmcia_get_tuple); |
| 388 | |
Jakub Kicinski | bd4b827 | 2021-11-20 09:15:10 -0800 | [diff] [blame] | 389 | #ifdef CONFIG_NET |
Lee Jones | f4468bb | 2021-03-12 11:02:36 +0000 | [diff] [blame] | 390 | /* |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 391 | * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis() |
| 392 | * |
| 393 | * pcmcia_do_get_mac() is the internal callback for the call from |
| 394 | * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the |
| 395 | * tuple contains a proper LAN_NODE_ID of length 6, and copy the data |
| 396 | * to struct net_device->dev_addr[i]. |
| 397 | */ |
| 398 | static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple, |
| 399 | void *priv) |
| 400 | { |
| 401 | struct net_device *dev = priv; |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 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 | } |
Jakub Kicinski | 562ef98 | 2021-10-13 13:44:34 -0700 | [diff] [blame] | 415 | eth_hw_addr_set(dev, &tuple->TupleData[2]); |
Dominik Brodowski | 5c128e8 | 2010-03-20 20:03:57 +0100 | [diff] [blame] | 416 | return 0; |
| 417 | } |
| 418 | |
| 419 | /** |
| 420 | * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE |
| 421 | * @p_dev: the struct pcmcia_device for which we want the address. |
| 422 | * @dev: a properly prepared struct net_device to store the info to. |
| 423 | * |
| 424 | * pcmcia_get_mac_from_cis() reads out the hardware MAC address from |
| 425 | * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which |
| 426 | * must be set up properly by the driver (see examples!). |
| 427 | */ |
| 428 | int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev) |
| 429 | { |
| 430 | return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev); |
| 431 | } |
| 432 | EXPORT_SYMBOL(pcmcia_get_mac_from_cis); |
| 433 | |
Jakub Kicinski | bd4b827 | 2021-11-20 09:15:10 -0800 | [diff] [blame] | 434 | #endif /* CONFIG_NET */ |