drivers/net/wireless/iwlegacy/iwl-io.h

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project.
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of version 2 of the GNU General Public License as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  19  *
  20  * The full GNU General Public License is included in this distribution in the
  21  * file called LICENSE.
  22  *
  23  * Contact Information:
  24  *  Intel Linux Wireless <ilw@linux.intel.com>
  25  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  26  *
  27  *****************************************************************************/
  28
  29 #ifndef __iwl_legacy_io_h__
  30 #define __iwl_legacy_io_h__
  31
  32 #include <linux/io.h>
  33
  34 #include "iwl-dev.h"
  35 #include "iwl-debug.h"
  36
  37 /*
  38  * IO, register, and NIC memory access functions
  39  *
  40  * NOTE on naming convention and macro usage for these
  41  *
  42  * A single _ prefix before a an access function means that no state
  43  * check or debug information is printed when that function is called.
  44  *
  45  * A double __ prefix before an access function means that state is checked
  46  * and the current line number and caller function name are printed in addition
  47  * to any other debug output.
  48  *
  49  * The non-prefixed name is the #define that maps the caller into a
  50  * #define that provides the caller's name and __LINE__ to the double
  51  * prefix version.
  52  *
  53  * If you wish to call the function without any debug or state checking,
  54  * you should use the single _ prefix version (as is used by dependent IO
  55  * routines, for example _iwl_legacy_read_direct32 calls the non-check version of
  56  * _iwl_legacy_read32.)
  57  *
  58  * These declarations are *extremely* useful in quickly isolating code deltas
  59  * which result in misconfiguration of the hardware I/O.  In combination with
  60  * git-bisect and the IO debug level you can quickly determine the specific
  61  * commit which breaks the IO sequence to the hardware.
  62  *
  63  */
  64
  65 static inline void _iwl_legacy_write8(struct iwl_priv *priv, u32 ofs, u8 val)
  66 {
  67         iowrite8(val, priv->hw_base + ofs);
  68 }
  69
  70 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
  71 static inline void
  72 __iwl_legacy_write8(const char *f, u32 l, struct iwl_priv *priv,
  73                                  u32 ofs, u8 val)
  74 {
  75         IWL_DEBUG_IO(priv, "write8(0x%08X, 0x%02X) - %s %d\n", ofs, val, f, l);
  76         _iwl_legacy_write8(priv, ofs, val);
  77 }
  78 #define iwl_write8(priv, ofs, val) \
  79         __iwl_legacy_write8(__FILE__, __LINE__, priv, ofs, val)
  80 #else
  81 #define iwl_write8(priv, ofs, val) _iwl_legacy_write8(priv, ofs, val)
  82 #endif
  83
  84
  85 static inline void _iwl_legacy_write32(struct iwl_priv *priv, u32 ofs, u32 val)
  86 {
  87         iowrite32(val, priv->hw_base + ofs);
  88 }
  89
  90 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
  91 static inline void
  92 __iwl_legacy_write32(const char *f, u32 l, struct iwl_priv *priv,
  93                                  u32 ofs, u32 val)
  94 {
  95         IWL_DEBUG_IO(priv, "write32(0x%08X, 0x%08X) - %s %d\n", ofs, val, f, l);
  96         _iwl_legacy_write32(priv, ofs, val);
  97 }
  98 #define iwl_write32(priv, ofs, val) \
  99         __iwl_legacy_write32(__FILE__, __LINE__, priv, ofs, val)
 100 #else
 101 #define iwl_write32(priv, ofs, val) _iwl_legacy_write32(priv, ofs, val)
 102 #endif
 103
 104 static inline u32 _iwl_legacy_read32(struct iwl_priv *priv, u32 ofs)
 105 {
 106         u32 val = ioread32(priv->hw_base + ofs);
 107         return val;
 108 }
 109
 110 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
 111 static inline u32
 112 __iwl_legacy_read32(char *f, u32 l, struct iwl_priv *priv, u32 ofs)
 113 {
 114         IWL_DEBUG_IO(priv, "read_direct32(0x%08X) - %s %d\n", ofs, f, l);
 115         return _iwl_legacy_read32(priv, ofs);
 116 }
 117 #define iwl_read32(priv, ofs) __iwl_legacy_read32(__FILE__, __LINE__, priv, ofs)
 118 #else
 119 #define iwl_read32(p, o) _iwl_legacy_read32(p, o)
 120 #endif
 121
 122 #define IWL_POLL_INTERVAL 10    /* microseconds */
 123 static inline int
 124 _iwl_legacy_poll_bit(struct iwl_priv *priv, u32 addr,
 125                                 u32 bits, u32 mask, int timeout)
 126 {
 127         int t = 0;
 128
 129         do {
 130                 if ((_iwl_legacy_read32(priv, addr) & mask) == (bits & mask))
 131                         return t;
 132                 udelay(IWL_POLL_INTERVAL);
 133                 t += IWL_POLL_INTERVAL;
 134         } while (t < timeout);
 135
 136         return -ETIMEDOUT;
 137 }
 138 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
 139 static inline int __iwl_legacy_poll_bit(const char *f, u32 l,
 140                                  struct iwl_priv *priv, u32 addr,
 141                                  u32 bits, u32 mask, int timeout)
 142 {
 143         int ret = _iwl_legacy_poll_bit(priv, addr, bits, mask, timeout);
 144         IWL_DEBUG_IO(priv, "poll_bit(0x%08X, 0x%08X, 0x%08X) - %s- %s %d\n",
 145                      addr, bits, mask,
 146                      unlikely(ret  == -ETIMEDOUT) ? "timeout" : "", f, l);
 147         return ret;
 148 }
 149 #define iwl_poll_bit(priv, addr, bits, mask, timeout) \
 150         __iwl_legacy_poll_bit(__FILE__, __LINE__, priv, addr, \
 151         bits, mask, timeout)
 152 #else
 153 #define iwl_poll_bit(p, a, b, m, t) _iwl_legacy_poll_bit(p, a, b, m, t)
 154 #endif
 155
 156 static inline void _iwl_legacy_set_bit(struct iwl_priv *priv, u32 reg, u32 mask)
 157 {
 158         _iwl_legacy_write32(priv, reg, _iwl_legacy_read32(priv, reg) | mask);
 159 }
 160 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
 161 static inline void __iwl_legacy_set_bit(const char *f, u32 l,
 162                                  struct iwl_priv *priv, u32 reg, u32 mask)
 163 {
 164         u32 val = _iwl_legacy_read32(priv, reg) | mask;
 165         IWL_DEBUG_IO(priv, "set_bit(0x%08X, 0x%08X) = 0x%08X\n", reg,
 166                                                         mask, val);
 167         _iwl_legacy_write32(priv, reg, val);
 168 }
 169 static inline void iwl_legacy_set_bit(struct iwl_priv *p, u32 r, u32 m)
 170 {
 171         unsigned long reg_flags;
 172
 173         spin_lock_irqsave(&p->reg_lock, reg_flags);
 174         __iwl_legacy_set_bit(__FILE__, __LINE__, p, r, m);
 175         spin_unlock_irqrestore(&p->reg_lock, reg_flags);
 176 }
 177 #else
 178 static inline void iwl_legacy_set_bit(struct iwl_priv *p, u32 r, u32 m)
 179 {
 180         unsigned long reg_flags;
 181
 182         spin_lock_irqsave(&p->reg_lock, reg_flags);
 183         _iwl_legacy_set_bit(p, r, m);
 184         spin_unlock_irqrestore(&p->reg_lock, reg_flags);
 185 }
 186 #endif
 187
 188 static inline void
 189 _iwl_legacy_clear_bit(struct iwl_priv *priv, u32 reg, u32 mask)
 190 {
 191         _iwl_legacy_write32(priv, reg, _iwl_legacy_read32(priv, reg) & ~mask);
 192 }
 193 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
 194 static inline void
 195 __iwl_legacy_clear_bit(const char *f, u32 l,
 196                                    struct iwl_priv *priv, u32 reg, u32 mask)
 197 {
 198         u32 val = _iwl_legacy_read32(priv, reg) & ~mask;
 199         IWL_DEBUG_IO(priv, "clear_bit(0x%08X, 0x%08X) = 0x%08X\n", reg, mask, val);
 200         _iwl_legacy_write32(priv, reg, val);
 201 }
 202 static inline void iwl_legacy_clear_bit(struct iwl_priv *p, u32 r, u32 m)
 203 {
 204         unsigned long reg_flags;
 205
 206         spin_lock_irqsave(&p->reg_lock, reg_flags);
 207         __iwl_legacy_clear_bit(__FILE__, __LINE__, p, r, m);
 208         spin_unlock_irqrestore(&p->reg_lock, reg_flags);
 209 }
 210 #else
 211 static inline void iwl_legacy_clear_bit(struct iwl_priv *p, u32 r, u32 m)
 212 {
 213         unsigned long reg_flags;
 214
 215         spin_lock_irqsave(&p->reg_lock, reg_flags);
 216         _iwl_legacy_clear_bit(p, r, m);
 217         spin_unlock_irqrestore(&p->reg_lock, reg_flags);
 218 }
 219 #endif
 220
 221 static inline int _iwl_legacy_grab_nic_access(struct iwl_priv *priv)
 222 {
 223         int ret;
 224         u32 val;
 225
 226         /* this bit wakes up the NIC */
 227         _iwl_legacy_set_bit(priv, CSR_GP_CNTRL,
 228                                 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
 229
 230         /*
 231          * These bits say the device is running, and should keep running for
 232          * at least a short while (at least as long as MAC_ACCESS_REQ stays 1),
 233          * but they do not indicate that embedded SRAM is restored yet;
 234          * 3945 and 4965 have volatile SRAM, and must save/restore contents
 235          * to/from host DRAM when sleeping/waking for power-saving.
 236          * Each direction takes approximately 1/4 millisecond; with this
 237          * overhead, it's a good idea to grab and hold MAC_ACCESS_REQUEST if a
 238          * series of register accesses are expected (e.g. reading Event Log),
 239          * to keep device from sleeping.
 240          *
 241          * CSR_UCODE_DRV_GP1 register bit MAC_SLEEP == 0 indicates that
 242          * SRAM is okay/restored.  We don't check that here because this call
 243          * is just for hardware register access; but GP1 MAC_SLEEP check is a
 244          * good idea before accessing 3945/4965 SRAM (e.g. reading Event Log).
 245          *
 246          */
 247         ret = _iwl_legacy_poll_bit(priv, CSR_GP_CNTRL,
 248                            CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN,
 249                            (CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY |
 250                             CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000);
 251         if (ret < 0) {
 252                 val = _iwl_legacy_read32(priv, CSR_GP_CNTRL);
 253                 IWL_ERR(priv,
 254                         "MAC is in deep sleep!.  CSR_GP_CNTRL = 0x%08X\n", val);
 255                 _iwl_legacy_write32(priv, CSR_RESET,
 256                                 CSR_RESET_REG_FLAG_FORCE_NMI);
 257                 return -EIO;
 258         }
 259
 260         return 0;
 261 }
 262
 263 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
 264 static inline int __iwl_legacy_grab_nic_access(const char *f, u32 l,
 265                                                struct iwl_priv *priv)
 266 {
 267         IWL_DEBUG_IO(priv, "grabbing nic access - %s %d\n", f, l);
 268         return _iwl_legacy_grab_nic_access(priv);
 269 }
 270 #define iwl_grab_nic_access(priv) \
 271         __iwl_legacy_grab_nic_access(__FILE__, __LINE__, priv)
 272 #else
 273 #define iwl_grab_nic_access(priv) \
 274         _iwl_legacy_grab_nic_access(priv)
 275 #endif
 276
 277 static inline void _iwl_legacy_release_nic_access(struct iwl_priv *priv)
 278 {
 279         _iwl_legacy_clear_bit(priv, CSR_GP_CNTRL,
 280                         CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
 281 }
 282 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
 283 static inline void __iwl_legacy_release_nic_access(const char *f, u32 l,
 284                                             struct iwl_priv *priv)
 285 {
 286
 287         IWL_DEBUG_IO(priv, "releasing nic access - %s %d\n", f, l);
 288         _iwl_legacy_release_nic_access(priv);
 289 }
 290 #define iwl_release_nic_access(priv) \
 291         __iwl_legacy_release_nic_access(__FILE__, __LINE__, priv)
 292 #else
 293 #define iwl_release_nic_access(priv) \
 294         _iwl_legacy_release_nic_access(priv)
 295 #endif
 296
 297 static inline u32 _iwl_legacy_read_direct32(struct iwl_priv *priv, u32 reg)
 298 {
 299         return _iwl_legacy_read32(priv, reg);
 300 }
 301 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
 302 static inline u32 __iwl_legacy_read_direct32(const char *f, u32 l,
 303                                         struct iwl_priv *priv, u32 reg)
 304 {
 305         u32 value = _iwl_legacy_read_direct32(priv, reg);
 306         IWL_DEBUG_IO(priv,
 307                         "read_direct32(0x%4X) = 0x%08x - %s %d\n", reg, value,
 308                      f, l);
 309         return value;
 310 }
 311 static inline u32 iwl_legacy_read_direct32(struct iwl_priv *priv, u32 reg)
 312 {
 313         u32 value;
 314         unsigned long reg_flags;
 315
 316         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 317         iwl_grab_nic_access(priv);
 318         value = __iwl_legacy_read_direct32(__FILE__, __LINE__, priv, reg);
 319         iwl_release_nic_access(priv);
 320         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 321         return value;
 322 }
 323
 324 #else
 325 static inline u32 iwl_legacy_read_direct32(struct iwl_priv *priv, u32 reg)
 326 {
 327         u32 value;
 328         unsigned long reg_flags;
 329
 330         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 331         iwl_grab_nic_access(priv);
 332         value = _iwl_legacy_read_direct32(priv, reg);
 333         iwl_release_nic_access(priv);
 334         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 335         return value;
 336
 337 }
 338 #endif
 339
 340 static inline void _iwl_legacy_write_direct32(struct iwl_priv *priv,
 341                                          u32 reg, u32 value)
 342 {
 343         _iwl_legacy_write32(priv, reg, value);
 344 }
 345 static inline void
 346 iwl_legacy_write_direct32(struct iwl_priv *priv, u32 reg, u32 value)
 347 {
 348         unsigned long reg_flags;
 349
 350         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 351         if (!iwl_grab_nic_access(priv)) {
 352                 _iwl_legacy_write_direct32(priv, reg, value);
 353                 iwl_release_nic_access(priv);
 354         }
 355         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 356 }
 357
 358 static inline void iwl_legacy_write_reg_buf(struct iwl_priv *priv,
 359                                                u32 reg, u32 len, u32 *values)
 360 {
 361         u32 count = sizeof(u32);
 362
 363         if ((priv != NULL) && (values != NULL)) {
 364                 for (; 0 < len; len -= count, reg += count, values++)
 365                         iwl_legacy_write_direct32(priv, reg, *values);
 366         }
 367 }
 368
 369 static inline int _iwl_legacy_poll_direct_bit(struct iwl_priv *priv, u32 addr,
 370                                        u32 mask, int timeout)
 371 {
 372         int t = 0;
 373
 374         do {
 375                 if ((iwl_legacy_read_direct32(priv, addr) & mask) == mask)
 376                         return t;
 377                 udelay(IWL_POLL_INTERVAL);
 378                 t += IWL_POLL_INTERVAL;
 379         } while (t < timeout);
 380
 381         return -ETIMEDOUT;
 382 }
 383
 384 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
 385 static inline int __iwl_legacy_poll_direct_bit(const char *f, u32 l,
 386                                             struct iwl_priv *priv,
 387                                             u32 addr, u32 mask, int timeout)
 388 {
 389         int ret  = _iwl_legacy_poll_direct_bit(priv, addr, mask, timeout);
 390
 391         if (unlikely(ret == -ETIMEDOUT))
 392                 IWL_DEBUG_IO(priv, "poll_direct_bit(0x%08X, 0x%08X) - "
 393                              "timedout - %s %d\n", addr, mask, f, l);
 394         else
 395                 IWL_DEBUG_IO(priv, "poll_direct_bit(0x%08X, 0x%08X) = 0x%08X "
 396                              "- %s %d\n", addr, mask, ret, f, l);
 397         return ret;
 398 }
 399 #define iwl_poll_direct_bit(priv, addr, mask, timeout) \
 400 __iwl_legacy_poll_direct_bit(__FILE__, __LINE__, priv, addr, mask, timeout)
 401 #else
 402 #define iwl_poll_direct_bit _iwl_legacy_poll_direct_bit
 403 #endif
 404
 405 static inline u32 _iwl_legacy_read_prph(struct iwl_priv *priv, u32 reg)
 406 {
 407         _iwl_legacy_write_direct32(priv, HBUS_TARG_PRPH_RADDR, reg | (3 << 24));
 408         rmb();
 409         return _iwl_legacy_read_direct32(priv, HBUS_TARG_PRPH_RDAT);
 410 }
 411 static inline u32 iwl_legacy_read_prph(struct iwl_priv *priv, u32 reg)
 412 {
 413         unsigned long reg_flags;
 414         u32 val;
 415
 416         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 417         iwl_grab_nic_access(priv);
 418         val = _iwl_legacy_read_prph(priv, reg);
 419         iwl_release_nic_access(priv);
 420         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 421         return val;
 422 }
 423
 424 static inline void _iwl_legacy_write_prph(struct iwl_priv *priv,
 425                                              u32 addr, u32 val)
 426 {
 427         _iwl_legacy_write_direct32(priv, HBUS_TARG_PRPH_WADDR,
 428                               ((addr & 0x0000FFFF) | (3 << 24)));
 429         wmb();
 430         _iwl_legacy_write_direct32(priv, HBUS_TARG_PRPH_WDAT, val);
 431 }
 432
 433 static inline void
 434 iwl_legacy_write_prph(struct iwl_priv *priv, u32 addr, u32 val)
 435 {
 436         unsigned long reg_flags;
 437
 438         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 439         if (!iwl_grab_nic_access(priv)) {
 440                 _iwl_legacy_write_prph(priv, addr, val);
 441                 iwl_release_nic_access(priv);
 442         }
 443         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 444 }
 445
 446 #define _iwl_legacy_set_bits_prph(priv, reg, mask) \
 447 _iwl_legacy_write_prph(priv, reg, (_iwl_legacy_read_prph(priv, reg) | mask))
 448
 449 static inline void
 450 iwl_legacy_set_bits_prph(struct iwl_priv *priv, u32 reg, u32 mask)
 451 {
 452         unsigned long reg_flags;
 453
 454         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 455         iwl_grab_nic_access(priv);
 456         _iwl_legacy_set_bits_prph(priv, reg, mask);
 457         iwl_release_nic_access(priv);
 458         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 459 }
 460
 461 #define _iwl_legacy_set_bits_mask_prph(priv, reg, bits, mask) \
 462 _iwl_legacy_write_prph(priv, reg,                               \
 463                  ((_iwl_legacy_read_prph(priv, reg) & mask) | bits))
 464
 465 static inline void iwl_legacy_set_bits_mask_prph(struct iwl_priv *priv, u32 reg,
 466                                 u32 bits, u32 mask)
 467 {
 468         unsigned long reg_flags;
 469
 470         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 471         iwl_grab_nic_access(priv);
 472         _iwl_legacy_set_bits_mask_prph(priv, reg, bits, mask);
 473         iwl_release_nic_access(priv);
 474         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 475 }
 476
 477 static inline void iwl_legacy_clear_bits_prph(struct iwl_priv
 478                                                  *priv, u32 reg, u32 mask)
 479 {
 480         unsigned long reg_flags;
 481         u32 val;
 482
 483         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 484         iwl_grab_nic_access(priv);
 485         val = _iwl_legacy_read_prph(priv, reg);
 486         _iwl_legacy_write_prph(priv, reg, (val & ~mask));
 487         iwl_release_nic_access(priv);
 488         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 489 }
 490
 491 static inline u32 iwl_legacy_read_targ_mem(struct iwl_priv *priv, u32 addr)
 492 {
 493         unsigned long reg_flags;
 494         u32 value;
 495
 496         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 497         iwl_grab_nic_access(priv);
 498
 499         _iwl_legacy_write_direct32(priv, HBUS_TARG_MEM_RADDR, addr);
 500         rmb();
 501         value = _iwl_legacy_read_direct32(priv, HBUS_TARG_MEM_RDAT);
 502
 503         iwl_release_nic_access(priv);
 504         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 505         return value;
 506 }
 507
 508 static inline void
 509 iwl_legacy_write_targ_mem(struct iwl_priv *priv, u32 addr, u32 val)
 510 {
 511         unsigned long reg_flags;
 512
 513         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 514         if (!iwl_grab_nic_access(priv)) {
 515                 _iwl_legacy_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr);
 516                 wmb();
 517                 _iwl_legacy_write_direct32(priv, HBUS_TARG_MEM_WDAT, val);
 518                 iwl_release_nic_access(priv);
 519         }
 520         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 521 }
 522
 523 static inline void
 524 iwl_legacy_write_targ_mem_buf(struct iwl_priv *priv, u32 addr,
 525                                           u32 len, u32 *values)
 526 {
 527         unsigned long reg_flags;
 528
 529         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 530         if (!iwl_grab_nic_access(priv)) {
 531                 _iwl_legacy_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr);
 532                 wmb();
 533                 for (; 0 < len; len -= sizeof(u32), values++)
 534                         _iwl_legacy_write_direct32(priv,
 535                                         HBUS_TARG_MEM_WDAT, *values);
 536
 537                 iwl_release_nic_access(priv);
 538         }
 539         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 540 }
 541 #endif