Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 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 | #include "iwl-devtrace.h" |
| 37 | |
| 38 | /* |
| 39 | * IO, register, and NIC memory access functions |
| 40 | * |
| 41 | * NOTE on naming convention and macro usage for these |
| 42 | * |
| 43 | * A single _ prefix before a an access function means that no state |
| 44 | * check or debug information is printed when that function is called. |
| 45 | * |
| 46 | * A double __ prefix before an access function means that state is checked |
| 47 | * and the current line number and caller function name are printed in addition |
| 48 | * to any other debug output. |
| 49 | * |
| 50 | * The non-prefixed name is the #define that maps the caller into a |
| 51 | * #define that provides the caller's name and __LINE__ to the double |
| 52 | * prefix version. |
| 53 | * |
| 54 | * If you wish to call the function without any debug or state checking, |
| 55 | * you should use the single _ prefix version (as is used by dependent IO |
| 56 | * routines, for example _iwl_legacy_read_direct32 calls the non-check version of |
| 57 | * _iwl_legacy_read32.) |
| 58 | * |
| 59 | * These declarations are *extremely* useful in quickly isolating code deltas |
| 60 | * which result in misconfiguration of the hardware I/O. In combination with |
| 61 | * git-bisect and the IO debug level you can quickly determine the specific |
| 62 | * commit which breaks the IO sequence to the hardware. |
| 63 | * |
| 64 | */ |
| 65 | |
| 66 | static inline void _iwl_legacy_write8(struct iwl_priv *priv, u32 ofs, u8 val) |
| 67 | { |
| 68 | trace_iwlwifi_legacy_dev_iowrite8(priv, ofs, val); |
| 69 | iowrite8(val, priv->hw_base + ofs); |
| 70 | } |
| 71 | |
| 72 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| 73 | static inline void |
| 74 | __iwl_legacy_write8(const char *f, u32 l, struct iwl_priv *priv, |
| 75 | u32 ofs, u8 val) |
| 76 | { |
| 77 | IWL_DEBUG_IO(priv, "write8(0x%08X, 0x%02X) - %s %d\n", ofs, val, f, l); |
| 78 | _iwl_legacy_write8(priv, ofs, val); |
| 79 | } |
| 80 | #define iwl_write8(priv, ofs, val) \ |
| 81 | __iwl_legacy_write8(__FILE__, __LINE__, priv, ofs, val) |
| 82 | #else |
| 83 | #define iwl_write8(priv, ofs, val) _iwl_legacy_write8(priv, ofs, val) |
| 84 | #endif |
| 85 | |
| 86 | |
| 87 | static inline void _iwl_legacy_write32(struct iwl_priv *priv, u32 ofs, u32 val) |
| 88 | { |
| 89 | trace_iwlwifi_legacy_dev_iowrite32(priv, ofs, val); |
| 90 | iowrite32(val, priv->hw_base + ofs); |
| 91 | } |
| 92 | |
| 93 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| 94 | static inline void |
| 95 | __iwl_legacy_write32(const char *f, u32 l, struct iwl_priv *priv, |
| 96 | u32 ofs, u32 val) |
| 97 | { |
| 98 | IWL_DEBUG_IO(priv, "write32(0x%08X, 0x%08X) - %s %d\n", ofs, val, f, l); |
| 99 | _iwl_legacy_write32(priv, ofs, val); |
| 100 | } |
| 101 | #define iwl_write32(priv, ofs, val) \ |
| 102 | __iwl_legacy_write32(__FILE__, __LINE__, priv, ofs, val) |
| 103 | #else |
| 104 | #define iwl_write32(priv, ofs, val) _iwl_legacy_write32(priv, ofs, val) |
| 105 | #endif |
| 106 | |
| 107 | static inline u32 _iwl_legacy_read32(struct iwl_priv *priv, u32 ofs) |
| 108 | { |
| 109 | u32 val = ioread32(priv->hw_base + ofs); |
| 110 | trace_iwlwifi_legacy_dev_ioread32(priv, ofs, val); |
| 111 | return val; |
| 112 | } |
| 113 | |
| 114 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| 115 | static inline u32 |
| 116 | __iwl_legacy_read32(char *f, u32 l, struct iwl_priv *priv, u32 ofs) |
| 117 | { |
| 118 | IWL_DEBUG_IO(priv, "read_direct32(0x%08X) - %s %d\n", ofs, f, l); |
| 119 | return _iwl_legacy_read32(priv, ofs); |
| 120 | } |
| 121 | #define iwl_read32(priv, ofs) __iwl_legacy_read32(__FILE__, __LINE__, priv, ofs) |
| 122 | #else |
| 123 | #define iwl_read32(p, o) _iwl_legacy_read32(p, o) |
| 124 | #endif |
| 125 | |
| 126 | #define IWL_POLL_INTERVAL 10 /* microseconds */ |
| 127 | static inline int |
| 128 | _iwl_legacy_poll_bit(struct iwl_priv *priv, u32 addr, |
| 129 | u32 bits, u32 mask, int timeout) |
| 130 | { |
| 131 | int t = 0; |
| 132 | |
| 133 | do { |
| 134 | if ((_iwl_legacy_read32(priv, addr) & mask) == (bits & mask)) |
| 135 | return t; |
| 136 | udelay(IWL_POLL_INTERVAL); |
| 137 | t += IWL_POLL_INTERVAL; |
| 138 | } while (t < timeout); |
| 139 | |
| 140 | return -ETIMEDOUT; |
| 141 | } |
| 142 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| 143 | static inline int __iwl_legacy_poll_bit(const char *f, u32 l, |
| 144 | struct iwl_priv *priv, u32 addr, |
| 145 | u32 bits, u32 mask, int timeout) |
| 146 | { |
| 147 | int ret = _iwl_legacy_poll_bit(priv, addr, bits, mask, timeout); |
| 148 | IWL_DEBUG_IO(priv, "poll_bit(0x%08X, 0x%08X, 0x%08X) - %s- %s %d\n", |
| 149 | addr, bits, mask, |
| 150 | unlikely(ret == -ETIMEDOUT) ? "timeout" : "", f, l); |
| 151 | return ret; |
| 152 | } |
| 153 | #define iwl_poll_bit(priv, addr, bits, mask, timeout) \ |
| 154 | __iwl_legacy_poll_bit(__FILE__, __LINE__, priv, addr, \ |
| 155 | bits, mask, timeout) |
| 156 | #else |
| 157 | #define iwl_poll_bit(p, a, b, m, t) _iwl_legacy_poll_bit(p, a, b, m, t) |
| 158 | #endif |
| 159 | |
| 160 | static inline void _iwl_legacy_set_bit(struct iwl_priv *priv, u32 reg, u32 mask) |
| 161 | { |
| 162 | _iwl_legacy_write32(priv, reg, _iwl_legacy_read32(priv, reg) | mask); |
| 163 | } |
| 164 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| 165 | static inline void __iwl_legacy_set_bit(const char *f, u32 l, |
| 166 | struct iwl_priv *priv, u32 reg, u32 mask) |
| 167 | { |
| 168 | u32 val = _iwl_legacy_read32(priv, reg) | mask; |
| 169 | IWL_DEBUG_IO(priv, "set_bit(0x%08X, 0x%08X) = 0x%08X\n", reg, |
| 170 | mask, val); |
| 171 | _iwl_legacy_write32(priv, reg, val); |
| 172 | } |
| 173 | static inline void iwl_legacy_set_bit(struct iwl_priv *p, u32 r, u32 m) |
| 174 | { |
| 175 | unsigned long reg_flags; |
| 176 | |
| 177 | spin_lock_irqsave(&p->reg_lock, reg_flags); |
| 178 | __iwl_legacy_set_bit(__FILE__, __LINE__, p, r, m); |
| 179 | spin_unlock_irqrestore(&p->reg_lock, reg_flags); |
| 180 | } |
| 181 | #else |
| 182 | static inline void iwl_legacy_set_bit(struct iwl_priv *p, u32 r, u32 m) |
| 183 | { |
| 184 | unsigned long reg_flags; |
| 185 | |
| 186 | spin_lock_irqsave(&p->reg_lock, reg_flags); |
| 187 | _iwl_legacy_set_bit(p, r, m); |
| 188 | spin_unlock_irqrestore(&p->reg_lock, reg_flags); |
| 189 | } |
| 190 | #endif |
| 191 | |
| 192 | static inline void |
| 193 | _iwl_legacy_clear_bit(struct iwl_priv *priv, u32 reg, u32 mask) |
| 194 | { |
| 195 | _iwl_legacy_write32(priv, reg, _iwl_legacy_read32(priv, reg) & ~mask); |
| 196 | } |
| 197 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| 198 | static inline void |
| 199 | __iwl_legacy_clear_bit(const char *f, u32 l, |
| 200 | struct iwl_priv *priv, u32 reg, u32 mask) |
| 201 | { |
| 202 | u32 val = _iwl_legacy_read32(priv, reg) & ~mask; |
| 203 | IWL_DEBUG_IO(priv, "clear_bit(0x%08X, 0x%08X) = 0x%08X\n", reg, mask, val); |
| 204 | _iwl_legacy_write32(priv, reg, val); |
| 205 | } |
| 206 | static inline void iwl_legacy_clear_bit(struct iwl_priv *p, u32 r, u32 m) |
| 207 | { |
| 208 | unsigned long reg_flags; |
| 209 | |
| 210 | spin_lock_irqsave(&p->reg_lock, reg_flags); |
| 211 | __iwl_legacy_clear_bit(__FILE__, __LINE__, p, r, m); |
| 212 | spin_unlock_irqrestore(&p->reg_lock, reg_flags); |
| 213 | } |
| 214 | #else |
| 215 | static inline void iwl_legacy_clear_bit(struct iwl_priv *p, u32 r, u32 m) |
| 216 | { |
| 217 | unsigned long reg_flags; |
| 218 | |
| 219 | spin_lock_irqsave(&p->reg_lock, reg_flags); |
| 220 | _iwl_legacy_clear_bit(p, r, m); |
| 221 | spin_unlock_irqrestore(&p->reg_lock, reg_flags); |
| 222 | } |
| 223 | #endif |
| 224 | |
| 225 | static inline int _iwl_legacy_grab_nic_access(struct iwl_priv *priv) |
| 226 | { |
| 227 | int ret; |
| 228 | u32 val; |
| 229 | |
| 230 | /* this bit wakes up the NIC */ |
| 231 | _iwl_legacy_set_bit(priv, CSR_GP_CNTRL, |
| 232 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
| 233 | |
| 234 | /* |
| 235 | * These bits say the device is running, and should keep running for |
| 236 | * at least a short while (at least as long as MAC_ACCESS_REQ stays 1), |
| 237 | * but they do not indicate that embedded SRAM is restored yet; |
| 238 | * 3945 and 4965 have volatile SRAM, and must save/restore contents |
| 239 | * to/from host DRAM when sleeping/waking for power-saving. |
| 240 | * Each direction takes approximately 1/4 millisecond; with this |
| 241 | * overhead, it's a good idea to grab and hold MAC_ACCESS_REQUEST if a |
| 242 | * series of register accesses are expected (e.g. reading Event Log), |
| 243 | * to keep device from sleeping. |
| 244 | * |
| 245 | * CSR_UCODE_DRV_GP1 register bit MAC_SLEEP == 0 indicates that |
| 246 | * SRAM is okay/restored. We don't check that here because this call |
| 247 | * is just for hardware register access; but GP1 MAC_SLEEP check is a |
| 248 | * good idea before accessing 3945/4965 SRAM (e.g. reading Event Log). |
| 249 | * |
| 250 | */ |
| 251 | ret = _iwl_legacy_poll_bit(priv, CSR_GP_CNTRL, |
| 252 | CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN, |
| 253 | (CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY | |
| 254 | CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000); |
| 255 | if (ret < 0) { |
| 256 | val = _iwl_legacy_read32(priv, CSR_GP_CNTRL); |
| 257 | IWL_ERR(priv, |
| 258 | "MAC is in deep sleep!. CSR_GP_CNTRL = 0x%08X\n", val); |
| 259 | _iwl_legacy_write32(priv, CSR_RESET, |
| 260 | CSR_RESET_REG_FLAG_FORCE_NMI); |
| 261 | return -EIO; |
| 262 | } |
| 263 | |
| 264 | return 0; |
| 265 | } |
| 266 | |
| 267 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| 268 | static inline int __iwl_legacy_grab_nic_access(const char *f, u32 l, |
| 269 | struct iwl_priv *priv) |
| 270 | { |
| 271 | IWL_DEBUG_IO(priv, "grabbing nic access - %s %d\n", f, l); |
| 272 | return _iwl_legacy_grab_nic_access(priv); |
| 273 | } |
| 274 | #define iwl_grab_nic_access(priv) \ |
| 275 | __iwl_legacy_grab_nic_access(__FILE__, __LINE__, priv) |
| 276 | #else |
| 277 | #define iwl_grab_nic_access(priv) \ |
| 278 | _iwl_legacy_grab_nic_access(priv) |
| 279 | #endif |
| 280 | |
| 281 | static inline void _iwl_legacy_release_nic_access(struct iwl_priv *priv) |
| 282 | { |
| 283 | _iwl_legacy_clear_bit(priv, CSR_GP_CNTRL, |
| 284 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
| 285 | } |
| 286 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| 287 | static inline void __iwl_legacy_release_nic_access(const char *f, u32 l, |
| 288 | struct iwl_priv *priv) |
| 289 | { |
| 290 | |
| 291 | IWL_DEBUG_IO(priv, "releasing nic access - %s %d\n", f, l); |
| 292 | _iwl_legacy_release_nic_access(priv); |
| 293 | } |
| 294 | #define iwl_release_nic_access(priv) \ |
| 295 | __iwl_legacy_release_nic_access(__FILE__, __LINE__, priv) |
| 296 | #else |
| 297 | #define iwl_release_nic_access(priv) \ |
| 298 | _iwl_legacy_release_nic_access(priv) |
| 299 | #endif |
| 300 | |
| 301 | static inline u32 _iwl_legacy_read_direct32(struct iwl_priv *priv, u32 reg) |
| 302 | { |
| 303 | return _iwl_legacy_read32(priv, reg); |
| 304 | } |
| 305 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| 306 | static inline u32 __iwl_legacy_read_direct32(const char *f, u32 l, |
| 307 | struct iwl_priv *priv, u32 reg) |
| 308 | { |
| 309 | u32 value = _iwl_legacy_read_direct32(priv, reg); |
| 310 | IWL_DEBUG_IO(priv, |
| 311 | "read_direct32(0x%4X) = 0x%08x - %s %d\n", reg, value, |
| 312 | f, l); |
| 313 | return value; |
| 314 | } |
| 315 | static inline u32 iwl_legacy_read_direct32(struct iwl_priv *priv, u32 reg) |
| 316 | { |
| 317 | u32 value; |
| 318 | unsigned long reg_flags; |
| 319 | |
| 320 | spin_lock_irqsave(&priv->reg_lock, reg_flags); |
| 321 | iwl_grab_nic_access(priv); |
| 322 | value = __iwl_legacy_read_direct32(__FILE__, __LINE__, priv, reg); |
| 323 | iwl_release_nic_access(priv); |
| 324 | spin_unlock_irqrestore(&priv->reg_lock, reg_flags); |
| 325 | return value; |
| 326 | } |
| 327 | |
| 328 | #else |
| 329 | static inline u32 iwl_legacy_read_direct32(struct iwl_priv *priv, u32 reg) |
| 330 | { |
| 331 | u32 value; |
| 332 | unsigned long reg_flags; |
| 333 | |
| 334 | spin_lock_irqsave(&priv->reg_lock, reg_flags); |
| 335 | iwl_grab_nic_access(priv); |
| 336 | value = _iwl_legacy_read_direct32(priv, reg); |
| 337 | iwl_release_nic_access(priv); |
| 338 | spin_unlock_irqrestore(&priv->reg_lock, reg_flags); |
| 339 | return value; |
| 340 | |
| 341 | } |
| 342 | #endif |
| 343 | |
| 344 | static inline void _iwl_legacy_write_direct32(struct iwl_priv *priv, |
| 345 | u32 reg, u32 value) |
| 346 | { |
| 347 | _iwl_legacy_write32(priv, reg, value); |
| 348 | } |
| 349 | static inline void |
| 350 | iwl_legacy_write_direct32(struct iwl_priv *priv, u32 reg, u32 value) |
| 351 | { |
| 352 | unsigned long reg_flags; |
| 353 | |
| 354 | spin_lock_irqsave(&priv->reg_lock, reg_flags); |
| 355 | if (!iwl_grab_nic_access(priv)) { |
| 356 | _iwl_legacy_write_direct32(priv, reg, value); |
| 357 | iwl_release_nic_access(priv); |
| 358 | } |
| 359 | spin_unlock_irqrestore(&priv->reg_lock, reg_flags); |
| 360 | } |
| 361 | |
| 362 | static inline void iwl_legacy_write_reg_buf(struct iwl_priv *priv, |
| 363 | u32 reg, u32 len, u32 *values) |
| 364 | { |
| 365 | u32 count = sizeof(u32); |
| 366 | |
| 367 | if ((priv != NULL) && (values != NULL)) { |
| 368 | for (; 0 < len; len -= count, reg += count, values++) |
| 369 | iwl_legacy_write_direct32(priv, reg, *values); |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | static inline int _iwl_legacy_poll_direct_bit(struct iwl_priv *priv, u32 addr, |
| 374 | u32 mask, int timeout) |
| 375 | { |
| 376 | int t = 0; |
| 377 | |
| 378 | do { |
| 379 | if ((iwl_legacy_read_direct32(priv, addr) & mask) == mask) |
| 380 | return t; |
| 381 | udelay(IWL_POLL_INTERVAL); |
| 382 | t += IWL_POLL_INTERVAL; |
| 383 | } while (t < timeout); |
| 384 | |
| 385 | return -ETIMEDOUT; |
| 386 | } |
| 387 | |
| 388 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| 389 | static inline int __iwl_legacy_poll_direct_bit(const char *f, u32 l, |
| 390 | struct iwl_priv *priv, |
| 391 | u32 addr, u32 mask, int timeout) |
| 392 | { |
| 393 | int ret = _iwl_legacy_poll_direct_bit(priv, addr, mask, timeout); |
| 394 | |
| 395 | if (unlikely(ret == -ETIMEDOUT)) |
| 396 | IWL_DEBUG_IO(priv, "poll_direct_bit(0x%08X, 0x%08X) - " |
| 397 | "timedout - %s %d\n", addr, mask, f, l); |
| 398 | else |
| 399 | IWL_DEBUG_IO(priv, "poll_direct_bit(0x%08X, 0x%08X) = 0x%08X " |
| 400 | "- %s %d\n", addr, mask, ret, f, l); |
| 401 | return ret; |
| 402 | } |
| 403 | #define iwl_poll_direct_bit(priv, addr, mask, timeout) \ |
| 404 | __iwl_legacy_poll_direct_bit(__FILE__, __LINE__, priv, addr, mask, timeout) |
| 405 | #else |
| 406 | #define iwl_poll_direct_bit _iwl_legacy_poll_direct_bit |
| 407 | #endif |
| 408 | |
| 409 | static inline u32 _iwl_legacy_read_prph(struct iwl_priv *priv, u32 reg) |
| 410 | { |
| 411 | _iwl_legacy_write_direct32(priv, HBUS_TARG_PRPH_RADDR, reg | (3 << 24)); |
| 412 | rmb(); |
| 413 | return _iwl_legacy_read_direct32(priv, HBUS_TARG_PRPH_RDAT); |
| 414 | } |
| 415 | static inline u32 iwl_legacy_read_prph(struct iwl_priv *priv, u32 reg) |
| 416 | { |
| 417 | unsigned long reg_flags; |
| 418 | u32 val; |
| 419 | |
| 420 | spin_lock_irqsave(&priv->reg_lock, reg_flags); |
| 421 | iwl_grab_nic_access(priv); |
| 422 | val = _iwl_legacy_read_prph(priv, reg); |
| 423 | iwl_release_nic_access(priv); |
| 424 | spin_unlock_irqrestore(&priv->reg_lock, reg_flags); |
| 425 | return val; |
| 426 | } |
| 427 | |
| 428 | static inline void _iwl_legacy_write_prph(struct iwl_priv *priv, |
| 429 | u32 addr, u32 val) |
| 430 | { |
| 431 | _iwl_legacy_write_direct32(priv, HBUS_TARG_PRPH_WADDR, |
| 432 | ((addr & 0x0000FFFF) | (3 << 24))); |
| 433 | wmb(); |
| 434 | _iwl_legacy_write_direct32(priv, HBUS_TARG_PRPH_WDAT, val); |
| 435 | } |
| 436 | |
| 437 | static inline void |
| 438 | iwl_legacy_write_prph(struct iwl_priv *priv, u32 addr, u32 val) |
| 439 | { |
| 440 | unsigned long reg_flags; |
| 441 | |
| 442 | spin_lock_irqsave(&priv->reg_lock, reg_flags); |
| 443 | if (!iwl_grab_nic_access(priv)) { |
| 444 | _iwl_legacy_write_prph(priv, addr, val); |
| 445 | iwl_release_nic_access(priv); |
| 446 | } |
| 447 | spin_unlock_irqrestore(&priv->reg_lock, reg_flags); |
| 448 | } |
| 449 | |
| 450 | #define _iwl_legacy_set_bits_prph(priv, reg, mask) \ |
| 451 | _iwl_legacy_write_prph(priv, reg, (_iwl_legacy_read_prph(priv, reg) | mask)) |
| 452 | |
| 453 | static inline void |
| 454 | iwl_legacy_set_bits_prph(struct iwl_priv *priv, u32 reg, u32 mask) |
| 455 | { |
| 456 | unsigned long reg_flags; |
| 457 | |
| 458 | spin_lock_irqsave(&priv->reg_lock, reg_flags); |
| 459 | iwl_grab_nic_access(priv); |
| 460 | _iwl_legacy_set_bits_prph(priv, reg, mask); |
| 461 | iwl_release_nic_access(priv); |
| 462 | spin_unlock_irqrestore(&priv->reg_lock, reg_flags); |
| 463 | } |
| 464 | |
| 465 | #define _iwl_legacy_set_bits_mask_prph(priv, reg, bits, mask) \ |
| 466 | _iwl_legacy_write_prph(priv, reg, \ |
| 467 | ((_iwl_legacy_read_prph(priv, reg) & mask) | bits)) |
| 468 | |
| 469 | static inline void iwl_legacy_set_bits_mask_prph(struct iwl_priv *priv, u32 reg, |
| 470 | u32 bits, u32 mask) |
| 471 | { |
| 472 | unsigned long reg_flags; |
| 473 | |
| 474 | spin_lock_irqsave(&priv->reg_lock, reg_flags); |
| 475 | iwl_grab_nic_access(priv); |
| 476 | _iwl_legacy_set_bits_mask_prph(priv, reg, bits, mask); |
| 477 | iwl_release_nic_access(priv); |
| 478 | spin_unlock_irqrestore(&priv->reg_lock, reg_flags); |
| 479 | } |
| 480 | |
| 481 | static inline void iwl_legacy_clear_bits_prph(struct iwl_priv |
| 482 | *priv, u32 reg, u32 mask) |
| 483 | { |
| 484 | unsigned long reg_flags; |
| 485 | u32 val; |
| 486 | |
| 487 | spin_lock_irqsave(&priv->reg_lock, reg_flags); |
| 488 | iwl_grab_nic_access(priv); |
| 489 | val = _iwl_legacy_read_prph(priv, reg); |
| 490 | _iwl_legacy_write_prph(priv, reg, (val & ~mask)); |
| 491 | iwl_release_nic_access(priv); |
| 492 | spin_unlock_irqrestore(&priv->reg_lock, reg_flags); |
| 493 | } |
| 494 | |
| 495 | static inline u32 iwl_legacy_read_targ_mem(struct iwl_priv *priv, u32 addr) |
| 496 | { |
| 497 | unsigned long reg_flags; |
| 498 | u32 value; |
| 499 | |
| 500 | spin_lock_irqsave(&priv->reg_lock, reg_flags); |
| 501 | iwl_grab_nic_access(priv); |
| 502 | |
| 503 | _iwl_legacy_write_direct32(priv, HBUS_TARG_MEM_RADDR, addr); |
| 504 | rmb(); |
| 505 | value = _iwl_legacy_read_direct32(priv, HBUS_TARG_MEM_RDAT); |
| 506 | |
| 507 | iwl_release_nic_access(priv); |
| 508 | spin_unlock_irqrestore(&priv->reg_lock, reg_flags); |
| 509 | return value; |
| 510 | } |
| 511 | |
| 512 | static inline void |
| 513 | iwl_legacy_write_targ_mem(struct iwl_priv *priv, u32 addr, u32 val) |
| 514 | { |
| 515 | unsigned long reg_flags; |
| 516 | |
| 517 | spin_lock_irqsave(&priv->reg_lock, reg_flags); |
| 518 | if (!iwl_grab_nic_access(priv)) { |
| 519 | _iwl_legacy_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr); |
| 520 | wmb(); |
| 521 | _iwl_legacy_write_direct32(priv, HBUS_TARG_MEM_WDAT, val); |
| 522 | iwl_release_nic_access(priv); |
| 523 | } |
| 524 | spin_unlock_irqrestore(&priv->reg_lock, reg_flags); |
| 525 | } |
| 526 | |
| 527 | static inline void |
| 528 | iwl_legacy_write_targ_mem_buf(struct iwl_priv *priv, u32 addr, |
| 529 | u32 len, u32 *values) |
| 530 | { |
| 531 | unsigned long reg_flags; |
| 532 | |
| 533 | spin_lock_irqsave(&priv->reg_lock, reg_flags); |
| 534 | if (!iwl_grab_nic_access(priv)) { |
| 535 | _iwl_legacy_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr); |
| 536 | wmb(); |
| 537 | for (; 0 < len; len -= sizeof(u32), values++) |
| 538 | _iwl_legacy_write_direct32(priv, |
| 539 | HBUS_TARG_MEM_WDAT, *values); |
| 540 | |
| 541 | iwl_release_nic_access(priv); |
| 542 | } |
| 543 | spin_unlock_irqrestore(&priv->reg_lock, reg_flags); |
| 544 | } |
| 545 | #endif |