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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 | /* hermes.c * * Driver core for the "Hermes" wireless MAC controller, as used in * the Lucent Orinoco and Cabletron RoamAbout cards. It should also * work on the hfa3841 and hfa3842 MAC controller chips used in the * Prism II chipsets. * * This is not a complete driver, just low-level access routines for * the MAC controller itself. * * Based on the prism2 driver from Absolute Value Systems' linux-wlan * project, the Linux wvlan_cs driver, Lucent's HCF-Light * (wvlan_hcf.c) library, and the NetBSD wireless driver (in no * particular order). * * Copyright (C) 2000, David Gibson, Linuxcare Australia. * (C) Copyright David Gibson, IBM Corp. 2001-2003. * * The contents of this file are subject to the Mozilla Public License * Version 1.1 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License * at http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See * the License for the specific language governing rights and * limitations under the License. * * Alternatively, the contents of this file may be used under the * terms of the GNU General Public License version 2 (the "GPL"), in * which case the provisions of the GPL are applicable instead of the * above. If you wish to allow the use of your version of this file * only under the terms of the GPL and not to allow others to use your * version of this file under the MPL, indicate your decision by * deleting the provisions above and replace them with the notice and * other provisions required by the GPL. If you do not delete the * provisions above, a recipient may use your version of this file * under either the MPL or the GPL. */ #include <linux/net.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/delay.h> #include "hermes.h" /* These are maximum timeouts. Most often, card wil react much faster */ #define CMD_BUSY_TIMEOUT (100) /* In iterations of ~1us */ #define CMD_INIT_TIMEOUT (50000) /* in iterations of ~10us */ #define CMD_COMPL_TIMEOUT (20000) /* in iterations of ~10us */ #define ALLOC_COMPL_TIMEOUT (1000) /* in iterations of ~10us */ /* * AUX port access. To unlock the AUX port write the access keys to the * PARAM0-2 registers, then write HERMES_AUX_ENABLE to the HERMES_CONTROL * register. Then read it and make sure it's HERMES_AUX_ENABLED. */ #define HERMES_AUX_ENABLE 0x8000 /* Enable auxiliary port access */ #define HERMES_AUX_DISABLE 0x4000 /* Disable to auxiliary port access */ #define HERMES_AUX_ENABLED 0xC000 /* Auxiliary port is open */ #define HERMES_AUX_DISABLED 0x0000 /* Auxiliary port is closed */ #define HERMES_AUX_PW0 0xFE01 #define HERMES_AUX_PW1 0xDC23 #define HERMES_AUX_PW2 0xBA45 /* HERMES_CMD_DOWNLD */ #define HERMES_PROGRAM_DISABLE (0x0000 | HERMES_CMD_DOWNLD) #define HERMES_PROGRAM_ENABLE_VOLATILE (0x0100 | HERMES_CMD_DOWNLD) #define HERMES_PROGRAM_ENABLE_NON_VOLATILE (0x0200 | HERMES_CMD_DOWNLD) #define HERMES_PROGRAM_NON_VOLATILE (0x0300 | HERMES_CMD_DOWNLD) /* * Debugging helpers */ #define DMSG(stuff...) do {printk(KERN_DEBUG "hermes @ %p: " , hw->iobase); \ printk(stuff); } while (0) #undef HERMES_DEBUG #ifdef HERMES_DEBUG #define DEBUG(lvl, stuff...) if ((lvl) <= HERMES_DEBUG) DMSG(stuff) #else /* ! HERMES_DEBUG */ #define DEBUG(lvl, stuff...) do { } while (0) #endif /* ! HERMES_DEBUG */ static const struct hermes_ops hermes_ops_local; /* * Internal functions */ /* Issue a command to the chip. Waiting for it to complete is the caller's problem. Returns -EBUSY if the command register is busy, 0 on success. Callable from any context. */ static int hermes_issue_cmd(struct hermes *hw, u16 cmd, u16 param0, u16 param1, u16 param2) { int k = CMD_BUSY_TIMEOUT; u16 reg; /* First wait for the command register to unbusy */ reg = hermes_read_regn(hw, CMD); while ((reg & HERMES_CMD_BUSY) && k) { k--; udelay(1); reg = hermes_read_regn(hw, CMD); } if (reg & HERMES_CMD_BUSY) return -EBUSY; hermes_write_regn(hw, PARAM2, param2); hermes_write_regn(hw, PARAM1, param1); hermes_write_regn(hw, PARAM0, param0); hermes_write_regn(hw, CMD, cmd); return 0; } /* * Function definitions */ /* For doing cmds that wipe the magic constant in SWSUPPORT0 */ static int hermes_doicmd_wait(struct hermes *hw, u16 cmd, u16 parm0, u16 parm1, u16 parm2, struct hermes_response *resp) { int err = 0; int k; u16 status, reg; err = hermes_issue_cmd(hw, cmd, parm0, parm1, parm2); if (err) return err; reg = hermes_read_regn(hw, EVSTAT); k = CMD_INIT_TIMEOUT; while ((!(reg & HERMES_EV_CMD)) && k) { k--; udelay(10); reg = hermes_read_regn(hw, EVSTAT); } hermes_write_regn(hw, SWSUPPORT0, HERMES_MAGIC); if (!hermes_present(hw)) { DEBUG(0, "hermes @ 0x%x: Card removed during reset.\n", hw->iobase); err = -ENODEV; goto out; } if (!(reg & HERMES_EV_CMD)) { printk(KERN_ERR "hermes @ %p: " "Timeout waiting for card to reset (reg=0x%04x)!\n", hw->iobase, reg); err = -ETIMEDOUT; goto out; } status = hermes_read_regn(hw, STATUS); if (resp) { resp->status = status; resp->resp0 = hermes_read_regn(hw, RESP0); resp->resp1 = hermes_read_regn(hw, RESP1); resp->resp2 = hermes_read_regn(hw, RESP2); } hermes_write_regn(hw, EVACK, HERMES_EV_CMD); if (status & HERMES_STATUS_RESULT) err = -EIO; out: return err; } void hermes_struct_init(struct hermes *hw, void __iomem *address, int reg_spacing) { hw->iobase = address; hw->reg_spacing = reg_spacing; hw->inten = 0x0; hw->eeprom_pda = false; hw->ops = &hermes_ops_local; } EXPORT_SYMBOL(hermes_struct_init); static int hermes_init(struct hermes *hw) { u16 reg; int err = 0; int k; /* We don't want to be interrupted while resetting the chipset */ hw->inten = 0x0; hermes_write_regn(hw, INTEN, 0); hermes_write_regn(hw, EVACK, 0xffff); /* Normally it's a "can't happen" for the command register to be busy when we go to issue a command because we are serializing all commands. However we want to have some chance of resetting the card even if it gets into a stupid state, so we actually wait to see if the command register will unbusy itself here. */ k = CMD_BUSY_TIMEOUT; reg = hermes_read_regn(hw, CMD); while (k && (reg & HERMES_CMD_BUSY)) { if (reg == 0xffff) /* Special case - the card has probably been removed, so don't wait for the timeout */ return -ENODEV; k--; udelay(1); reg = hermes_read_regn(hw, CMD); } /* No need to explicitly handle the timeout - if we've timed out hermes_issue_cmd() will probably return -EBUSY below */ /* According to the documentation, EVSTAT may contain obsolete event occurrence information. We have to acknowledge it by writing EVACK. */ reg = hermes_read_regn(hw, EVSTAT); hermes_write_regn(hw, EVACK, reg); /* We don't use hermes_docmd_wait here, because the reset wipes the magic constant in SWSUPPORT0 away, and it gets confused */ err = hermes_doicmd_wait(hw, HERMES_CMD_INIT, 0, 0, 0, NULL); return err; } /* Issue a command to the chip, and (busy!) wait for it to * complete. * * Returns: * < 0 on internal error * 0 on success * > 0 on error returned by the firmware * * Callable from any context, but locking is your problem. */ static int hermes_docmd_wait(struct hermes *hw, u16 cmd, u16 parm0, struct hermes_response *resp) { int err; int k; u16 reg; u16 status; err = hermes_issue_cmd(hw, cmd, parm0, 0, 0); if (err) { if (!hermes_present(hw)) { if (net_ratelimit()) printk(KERN_WARNING "hermes @ %p: " "Card removed while issuing command " "0x%04x.\n", hw->iobase, cmd); err = -ENODEV; } else if (net_ratelimit()) printk(KERN_ERR "hermes @ %p: " "Error %d issuing command 0x%04x.\n", hw->iobase, err, cmd); goto out; } reg = hermes_read_regn(hw, EVSTAT); k = CMD_COMPL_TIMEOUT; while ((!(reg & HERMES_EV_CMD)) && k) { k--; udelay(10); reg = hermes_read_regn(hw, EVSTAT); } if (!hermes_present(hw)) { printk(KERN_WARNING "hermes @ %p: Card removed " "while waiting for command 0x%04x completion.\n", hw->iobase, cmd); err = -ENODEV; goto out; } if (!(reg & HERMES_EV_CMD)) { printk(KERN_ERR "hermes @ %p: Timeout waiting for " "command 0x%04x completion.\n", hw->iobase, cmd); err = -ETIMEDOUT; goto out; } status = hermes_read_regn(hw, STATUS); if (resp) { resp->status = status; resp->resp0 = hermes_read_regn(hw, RESP0); resp->resp1 = hermes_read_regn(hw, RESP1); resp->resp2 = hermes_read_regn(hw, RESP2); } hermes_write_regn(hw, EVACK, HERMES_EV_CMD); if (status & HERMES_STATUS_RESULT) err = -EIO; out: return err; } static int hermes_allocate(struct hermes *hw, u16 size, u16 *fid) { int err = 0; int k; u16 reg; if ((size < HERMES_ALLOC_LEN_MIN) || (size > HERMES_ALLOC_LEN_MAX)) return -EINVAL; err = hermes_docmd_wait(hw, HERMES_CMD_ALLOC, size, NULL); if (err) return err; reg = hermes_read_regn(hw, EVSTAT); k = ALLOC_COMPL_TIMEOUT; while ((!(reg & HERMES_EV_ALLOC)) && k) { k--; udelay(10); reg = hermes_read_regn(hw, EVSTAT); } if (!hermes_present(hw)) { printk(KERN_WARNING "hermes @ %p: " "Card removed waiting for frame allocation.\n", hw->iobase); return -ENODEV; } if (!(reg & HERMES_EV_ALLOC)) { printk(KERN_ERR "hermes @ %p: " "Timeout waiting for frame allocation\n", hw->iobase); return -ETIMEDOUT; } *fid = hermes_read_regn(hw, ALLOCFID); hermes_write_regn(hw, EVACK, HERMES_EV_ALLOC); return 0; } /* Set up a BAP to read a particular chunk of data from card's internal buffer. * * Returns: * < 0 on internal failure (errno) * 0 on success * > 0 on error * from firmware * * Callable from any context */ static int hermes_bap_seek(struct hermes *hw, int bap, u16 id, u16 offset) { int sreg = bap ? HERMES_SELECT1 : HERMES_SELECT0; int oreg = bap ? HERMES_OFFSET1 : HERMES_OFFSET0; int k; u16 reg; /* Paranoia.. */ if ((offset > HERMES_BAP_OFFSET_MAX) || (offset % 2)) return -EINVAL; k = HERMES_BAP_BUSY_TIMEOUT; reg = hermes_read_reg(hw, oreg); while ((reg & HERMES_OFFSET_BUSY) && k) { k--; udelay(1); reg = hermes_read_reg(hw, oreg); } if (reg & HERMES_OFFSET_BUSY) return -ETIMEDOUT; /* Now we actually set up the transfer */ hermes_write_reg(hw, sreg, id); hermes_write_reg(hw, oreg, offset); /* Wait for the BAP to be ready */ k = HERMES_BAP_BUSY_TIMEOUT; reg = hermes_read_reg(hw, oreg); while ((reg & (HERMES_OFFSET_BUSY | HERMES_OFFSET_ERR)) && k) { k--; udelay(1); reg = hermes_read_reg(hw, oreg); } if (reg != offset) { printk(KERN_ERR "hermes @ %p: BAP%d offset %s: " "reg=0x%x id=0x%x offset=0x%x\n", hw->iobase, bap, (reg & HERMES_OFFSET_BUSY) ? "timeout" : "error", reg, id, offset); if (reg & HERMES_OFFSET_BUSY) return -ETIMEDOUT; return -EIO; /* error or wrong offset */ } return 0; } /* Read a block of data from the chip's buffer, via the * BAP. Synchronization/serialization is the caller's problem. len * must be even. * * Returns: * < 0 on internal failure (errno) * 0 on success * > 0 on error from firmware */ static int hermes_bap_pread(struct hermes *hw, int bap, void *buf, int len, u16 id, u16 offset) { int dreg = bap ? HERMES_DATA1 : HERMES_DATA0; int err = 0; if ((len < 0) || (len % 2)) return -EINVAL; err = hermes_bap_seek(hw, bap, id, offset); if (err) goto out; /* Actually do the transfer */ hermes_read_words(hw, dreg, buf, len / 2); out: return err; } /* Write a block of data to the chip's buffer, via the * BAP. Synchronization/serialization is the caller's problem. * * Returns: * < 0 on internal failure (errno) * 0 on success * > 0 on error from firmware */ static int hermes_bap_pwrite(struct hermes *hw, int bap, const void *buf, int len, u16 id, u16 offset) { int dreg = bap ? HERMES_DATA1 : HERMES_DATA0; int err = 0; if (len < 0) return -EINVAL; err = hermes_bap_seek(hw, bap, id, offset); if (err) goto out; /* Actually do the transfer */ hermes_write_bytes(hw, dreg, buf, len); out: return err; } /* Read a Length-Type-Value record from the card. * * If length is NULL, we ignore the length read from the card, and * read the entire buffer regardless. This is useful because some of * the configuration records appear to have incorrect lengths in * practice. * * Callable from user or bh context. */ static int hermes_read_ltv(struct hermes *hw, int bap, u16 rid, unsigned bufsize, u16 *length, void *buf) { int err = 0; int dreg = bap ? HERMES_DATA1 : HERMES_DATA0; u16 rlength, rtype; unsigned nwords; if (bufsize % 2) return -EINVAL; err = hermes_docmd_wait(hw, HERMES_CMD_ACCESS, rid, NULL); if (err) return err; err = hermes_bap_seek(hw, bap, rid, 0); if (err) return err; rlength = hermes_read_reg(hw, dreg); if (!rlength) return -ENODATA; rtype = hermes_read_reg(hw, dreg); if (length) *length = rlength; if (rtype != rid) printk(KERN_WARNING "hermes @ %p: %s(): " "rid (0x%04x) does not match type (0x%04x)\n", hw->iobase, __func__, rid, rtype); if (HERMES_RECLEN_TO_BYTES(rlength) > bufsize) printk(KERN_WARNING "hermes @ %p: " "Truncating LTV record from %d to %d bytes. " "(rid=0x%04x, len=0x%04x)\n", hw->iobase, HERMES_RECLEN_TO_BYTES(rlength), bufsize, rid, rlength); nwords = min((unsigned)rlength - 1, bufsize / 2); hermes_read_words(hw, dreg, buf, nwords); return 0; } static int hermes_write_ltv(struct hermes *hw, int bap, u16 rid, u16 length, const void *value) { int dreg = bap ? HERMES_DATA1 : HERMES_DATA0; int err = 0; unsigned count; if (length == 0) return -EINVAL; err = hermes_bap_seek(hw, bap, rid, 0); if (err) return err; hermes_write_reg(hw, dreg, length); hermes_write_reg(hw, dreg, rid); count = length - 1; hermes_write_bytes(hw, dreg, value, count << 1); err = hermes_docmd_wait(hw, HERMES_CMD_ACCESS | HERMES_CMD_WRITE, rid, NULL); return err; } /*** Hermes AUX control ***/ static inline void hermes_aux_setaddr(struct hermes *hw, u32 addr) { hermes_write_reg(hw, HERMES_AUXPAGE, (u16) (addr >> 7)); hermes_write_reg(hw, HERMES_AUXOFFSET, (u16) (addr & 0x7F)); } static inline int hermes_aux_control(struct hermes *hw, int enabled) { int desired_state = enabled ? HERMES_AUX_ENABLED : HERMES_AUX_DISABLED; int action = enabled ? HERMES_AUX_ENABLE : HERMES_AUX_DISABLE; int i; /* Already open? */ if (hermes_read_reg(hw, HERMES_CONTROL) == desired_state) return 0; hermes_write_reg(hw, HERMES_PARAM0, HERMES_AUX_PW0); hermes_write_reg(hw, HERMES_PARAM1, HERMES_AUX_PW1); hermes_write_reg(hw, HERMES_PARAM2, HERMES_AUX_PW2); hermes_write_reg(hw, HERMES_CONTROL, action); for (i = 0; i < 20; i++) { udelay(10); if (hermes_read_reg(hw, HERMES_CONTROL) == desired_state) return 0; } return -EBUSY; } /*** Hermes programming ***/ /* About to start programming data (Hermes I) * offset is the entry point * * Spectrum_cs' Symbol fw does not require this * wl_lkm Agere fw does * Don't know about intersil */ static int hermesi_program_init(struct hermes *hw, u32 offset) { int err; /* Disable interrupts?*/ /*hw->inten = 0x0;*/ /*hermes_write_regn(hw, INTEN, 0);*/ /*hermes_set_irqmask(hw, 0);*/ /* Acknowledge any outstanding command */ hermes_write_regn(hw, EVACK, 0xFFFF); /* Using init_cmd_wait rather than cmd_wait */ err = hw->ops->init_cmd_wait(hw, 0x0100 | HERMES_CMD_INIT, 0, 0, 0, NULL); if (err) return err; err = hw->ops->init_cmd_wait(hw, 0x0000 | HERMES_CMD_INIT, 0, 0, 0, NULL); if (err) return err; err = hermes_aux_control(hw, 1); pr_debug("AUX enable returned %d\n", err); if (err) return err; pr_debug("Enabling volatile, EP 0x%08x\n", offset); err = hw->ops->init_cmd_wait(hw, HERMES_PROGRAM_ENABLE_VOLATILE, offset & 0xFFFFu, offset >> 16, 0, NULL); pr_debug("PROGRAM_ENABLE returned %d\n", err); return err; } /* Done programming data (Hermes I) * * Spectrum_cs' Symbol fw does not require this * wl_lkm Agere fw does * Don't know about intersil */ static int hermesi_program_end(struct hermes *hw) { struct hermes_response resp; int rc = 0; int err; rc = hw->ops->cmd_wait(hw, HERMES_PROGRAM_DISABLE, 0, &resp); pr_debug("PROGRAM_DISABLE returned %d, " "r0 0x%04x, r1 0x%04x, r2 0x%04x\n", rc, resp.resp0, resp.resp1, resp.resp2); if ((rc == 0) && ((resp.status & HERMES_STATUS_CMDCODE) != HERMES_CMD_DOWNLD)) rc = -EIO; err = hermes_aux_control(hw, 0); pr_debug("AUX disable returned %d\n", err); /* Acknowledge any outstanding command */ hermes_write_regn(hw, EVACK, 0xFFFF); /* Reinitialise, ignoring return */ (void) hw->ops->init_cmd_wait(hw, 0x0000 | HERMES_CMD_INIT, 0, 0, 0, NULL); return rc ? rc : err; } static int hermes_program_bytes(struct hermes *hw, const char *data, u32 addr, u32 len) { /* wl lkm splits the programming into chunks of 2000 bytes. * This restriction appears to come from USB. The PCMCIA * adapters can program the whole lot in one go */ hermes_aux_setaddr(hw, addr); hermes_write_bytes(hw, HERMES_AUXDATA, data, len); return 0; } /* Read PDA from the adapter */ static int hermes_read_pda(struct hermes *hw, __le16 *pda, u32 pda_addr, u16 pda_len) { int ret; u16 pda_size; u16 data_len = pda_len; __le16 *data = pda; if (hw->eeprom_pda) { /* PDA of spectrum symbol is in eeprom */ /* Issue command to read EEPROM */ ret = hw->ops->cmd_wait(hw, HERMES_CMD_READMIF, 0, NULL); if (ret) return ret; } else { /* wl_lkm does not include PDA size in the PDA area. * We will pad the information into pda, so other routines * don't have to be modified */ pda[0] = cpu_to_le16(pda_len - 2); /* Includes CFG_PROD_DATA but not itself */ pda[1] = cpu_to_le16(0x0800); /* CFG_PROD_DATA */ data_len = pda_len - 4; data = pda + 2; } /* Open auxiliary port */ ret = hermes_aux_control(hw, 1); pr_debug("AUX enable returned %d\n", ret); if (ret) return ret; /* Read PDA */ hermes_aux_setaddr(hw, pda_addr); hermes_read_words(hw, HERMES_AUXDATA, data, data_len / 2); /* Close aux port */ ret = hermes_aux_control(hw, 0); pr_debug("AUX disable returned %d\n", ret); /* Check PDA length */ pda_size = le16_to_cpu(pda[0]); pr_debug("Actual PDA length %d, Max allowed %d\n", pda_size, pda_len); if (pda_size > pda_len) return -EINVAL; return 0; } static void hermes_lock_irqsave(spinlock_t *lock, unsigned long *flags) __acquires(lock) { spin_lock_irqsave(lock, *flags); } static void hermes_unlock_irqrestore(spinlock_t *lock, unsigned long *flags) __releases(lock) { spin_unlock_irqrestore(lock, *flags); } static void hermes_lock_irq(spinlock_t *lock) __acquires(lock) { spin_lock_irq(lock); } static void hermes_unlock_irq(spinlock_t *lock) __releases(lock) { spin_unlock_irq(lock); } /* Hermes operations for local buses */ static const struct hermes_ops hermes_ops_local = { .init = hermes_init, .cmd_wait = hermes_docmd_wait, .init_cmd_wait = hermes_doicmd_wait, .allocate = hermes_allocate, .read_ltv = hermes_read_ltv, .read_ltv_pr = hermes_read_ltv, .write_ltv = hermes_write_ltv, .bap_pread = hermes_bap_pread, .bap_pwrite = hermes_bap_pwrite, .read_pda = hermes_read_pda, .program_init = hermesi_program_init, .program_end = hermesi_program_end, .program = hermes_program_bytes, .lock_irqsave = hermes_lock_irqsave, .unlock_irqrestore = hermes_unlock_irqrestore, .lock_irq = hermes_lock_irq, .unlock_irq = hermes_unlock_irq, }; |