1 2 /* 3 * Linux device driver for ADMtek ADM8211 (IEEE 802.11b MAC/BBP) 4 * 5 * Copyright (c) 2003, Jouni Malinen <j@w1.fi> 6 * Copyright (c) 2004-2007, Michael Wu <flamingice@sourmilk.net> 7 * Some parts copyright (c) 2003 by David Young <dyoung@pobox.com> 8 * and used with permission. 9 * 10 * Much thanks to Infineon-ADMtek for their support of this driver. 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License version 2 as 14 * published by the Free Software Foundation. See README and COPYING for 15 * more details. 16 */ 17 18 #include <linux/interrupt.h> 19 #include <linux/if.h> 20 #include <linux/skbuff.h> 21 #include <linux/slab.h> 22 #include <linux/etherdevice.h> 23 #include <linux/pci.h> 24 #include <linux/delay.h> 25 #include <linux/crc32.h> 26 #include <linux/eeprom_93cx6.h> 27 #include <linux/module.h> 28 #include <net/mac80211.h> 29 30 #include "adm8211.h" 31 32 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>"); 33 MODULE_AUTHOR("Jouni Malinen <j@w1.fi>"); 34 MODULE_DESCRIPTION("Driver for IEEE 802.11b wireless cards based on ADMtek ADM8211"); 35 MODULE_SUPPORTED_DEVICE("ADM8211"); 36 MODULE_LICENSE("GPL"); 37 38 static unsigned int tx_ring_size __read_mostly = 16; 39 static unsigned int rx_ring_size __read_mostly = 16; 40 41 module_param(tx_ring_size, uint, 0); 42 module_param(rx_ring_size, uint, 0); 43 44 static const struct pci_device_id adm8211_pci_id_table[] = { 45 /* ADMtek ADM8211 */ 46 { PCI_DEVICE(0x10B7, 0x6000) }, /* 3Com 3CRSHPW796 */ 47 { PCI_DEVICE(0x1200, 0x8201) }, /* ? */ 48 { PCI_DEVICE(0x1317, 0x8201) }, /* ADM8211A */ 49 { PCI_DEVICE(0x1317, 0x8211) }, /* ADM8211B/C */ 50 { 0 } 51 }; 52 53 static struct ieee80211_rate adm8211_rates[] = { 54 { .bitrate = 10, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 55 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 56 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 57 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 58 { .bitrate = 220, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, /* XX ?? */ 59 }; 60 61 static const struct ieee80211_channel adm8211_channels[] = { 62 { .center_freq = 2412}, 63 { .center_freq = 2417}, 64 { .center_freq = 2422}, 65 { .center_freq = 2427}, 66 { .center_freq = 2432}, 67 { .center_freq = 2437}, 68 { .center_freq = 2442}, 69 { .center_freq = 2447}, 70 { .center_freq = 2452}, 71 { .center_freq = 2457}, 72 { .center_freq = 2462}, 73 { .center_freq = 2467}, 74 { .center_freq = 2472}, 75 { .center_freq = 2484}, 76 }; 77 78 79 static void adm8211_eeprom_register_read(struct eeprom_93cx6 *eeprom) 80 { 81 struct adm8211_priv *priv = eeprom->data; 82 u32 reg = ADM8211_CSR_READ(SPR); 83 84 eeprom->reg_data_in = reg & ADM8211_SPR_SDI; 85 eeprom->reg_data_out = reg & ADM8211_SPR_SDO; 86 eeprom->reg_data_clock = reg & ADM8211_SPR_SCLK; 87 eeprom->reg_chip_select = reg & ADM8211_SPR_SCS; 88 } 89 90 static void adm8211_eeprom_register_write(struct eeprom_93cx6 *eeprom) 91 { 92 struct adm8211_priv *priv = eeprom->data; 93 u32 reg = 0x4000 | ADM8211_SPR_SRS; 94 95 if (eeprom->reg_data_in) 96 reg |= ADM8211_SPR_SDI; 97 if (eeprom->reg_data_out) 98 reg |= ADM8211_SPR_SDO; 99 if (eeprom->reg_data_clock) 100 reg |= ADM8211_SPR_SCLK; 101 if (eeprom->reg_chip_select) 102 reg |= ADM8211_SPR_SCS; 103 104 ADM8211_CSR_WRITE(SPR, reg); 105 ADM8211_CSR_READ(SPR); /* eeprom_delay */ 106 } 107 108 static int adm8211_read_eeprom(struct ieee80211_hw *dev) 109 { 110 struct adm8211_priv *priv = dev->priv; 111 unsigned int words, i; 112 struct ieee80211_chan_range chan_range; 113 u16 cr49; 114 struct eeprom_93cx6 eeprom = { 115 .data = priv, 116 .register_read = adm8211_eeprom_register_read, 117 .register_write = adm8211_eeprom_register_write 118 }; 119 120 if (ADM8211_CSR_READ(CSR_TEST0) & ADM8211_CSR_TEST0_EPTYP) { 121 /* 256 * 16-bit = 512 bytes */ 122 eeprom.width = PCI_EEPROM_WIDTH_93C66; 123 words = 256; 124 } else { 125 /* 64 * 16-bit = 128 bytes */ 126 eeprom.width = PCI_EEPROM_WIDTH_93C46; 127 words = 64; 128 } 129 130 priv->eeprom_len = words * 2; 131 priv->eeprom = kmalloc(priv->eeprom_len, GFP_KERNEL); 132 if (!priv->eeprom) 133 return -ENOMEM; 134 135 eeprom_93cx6_multiread(&eeprom, 0, (__le16 *)priv->eeprom, words); 136 137 cr49 = le16_to_cpu(priv->eeprom->cr49); 138 priv->rf_type = (cr49 >> 3) & 0x7; 139 switch (priv->rf_type) { 140 case ADM8211_TYPE_INTERSIL: 141 case ADM8211_TYPE_RFMD: 142 case ADM8211_TYPE_MARVEL: 143 case ADM8211_TYPE_AIROHA: 144 case ADM8211_TYPE_ADMTEK: 145 break; 146 147 default: 148 if (priv->pdev->revision < ADM8211_REV_CA) 149 priv->rf_type = ADM8211_TYPE_RFMD; 150 else 151 priv->rf_type = ADM8211_TYPE_AIROHA; 152 153 printk(KERN_WARNING "%s (adm8211): Unknown RFtype %d\n", 154 pci_name(priv->pdev), (cr49 >> 3) & 0x7); 155 } 156 157 priv->bbp_type = cr49 & 0x7; 158 switch (priv->bbp_type) { 159 case ADM8211_TYPE_INTERSIL: 160 case ADM8211_TYPE_RFMD: 161 case ADM8211_TYPE_MARVEL: 162 case ADM8211_TYPE_AIROHA: 163 case ADM8211_TYPE_ADMTEK: 164 break; 165 default: 166 if (priv->pdev->revision < ADM8211_REV_CA) 167 priv->bbp_type = ADM8211_TYPE_RFMD; 168 else 169 priv->bbp_type = ADM8211_TYPE_ADMTEK; 170 171 printk(KERN_WARNING "%s (adm8211): Unknown BBPtype: %d\n", 172 pci_name(priv->pdev), cr49 >> 3); 173 } 174 175 if (priv->eeprom->country_code >= ARRAY_SIZE(cranges)) { 176 printk(KERN_WARNING "%s (adm8211): Invalid country code (%d)\n", 177 pci_name(priv->pdev), priv->eeprom->country_code); 178 179 chan_range = cranges[2]; 180 } else 181 chan_range = cranges[priv->eeprom->country_code]; 182 183 printk(KERN_DEBUG "%s (adm8211): Channel range: %d - %d\n", 184 pci_name(priv->pdev), (int)chan_range.min, (int)chan_range.max); 185 186 BUILD_BUG_ON(sizeof(priv->channels) != sizeof(adm8211_channels)); 187 188 memcpy(priv->channels, adm8211_channels, sizeof(priv->channels)); 189 priv->band.channels = priv->channels; 190 priv->band.n_channels = ARRAY_SIZE(adm8211_channels); 191 priv->band.bitrates = adm8211_rates; 192 priv->band.n_bitrates = ARRAY_SIZE(adm8211_rates); 193 194 for (i = 1; i <= ARRAY_SIZE(adm8211_channels); i++) 195 if (i < chan_range.min || i > chan_range.max) 196 priv->channels[i - 1].flags |= IEEE80211_CHAN_DISABLED; 197 198 switch (priv->eeprom->specific_bbptype) { 199 case ADM8211_BBP_RFMD3000: 200 case ADM8211_BBP_RFMD3002: 201 case ADM8211_BBP_ADM8011: 202 priv->specific_bbptype = priv->eeprom->specific_bbptype; 203 break; 204 205 default: 206 if (priv->pdev->revision < ADM8211_REV_CA) 207 priv->specific_bbptype = ADM8211_BBP_RFMD3000; 208 else 209 priv->specific_bbptype = ADM8211_BBP_ADM8011; 210 211 printk(KERN_WARNING "%s (adm8211): Unknown specific BBP: %d\n", 212 pci_name(priv->pdev), priv->eeprom->specific_bbptype); 213 } 214 215 switch (priv->eeprom->specific_rftype) { 216 case ADM8211_RFMD2948: 217 case ADM8211_RFMD2958: 218 case ADM8211_RFMD2958_RF3000_CONTROL_POWER: 219 case ADM8211_MAX2820: 220 case ADM8211_AL2210L: 221 priv->transceiver_type = priv->eeprom->specific_rftype; 222 break; 223 224 default: 225 if (priv->pdev->revision == ADM8211_REV_BA) 226 priv->transceiver_type = ADM8211_RFMD2958_RF3000_CONTROL_POWER; 227 else if (priv->pdev->revision == ADM8211_REV_CA) 228 priv->transceiver_type = ADM8211_AL2210L; 229 else if (priv->pdev->revision == ADM8211_REV_AB) 230 priv->transceiver_type = ADM8211_RFMD2948; 231 232 printk(KERN_WARNING "%s (adm8211): Unknown transceiver: %d\n", 233 pci_name(priv->pdev), priv->eeprom->specific_rftype); 234 235 break; 236 } 237 238 printk(KERN_DEBUG "%s (adm8211): RFtype=%d BBPtype=%d Specific BBP=%d " 239 "Transceiver=%d\n", pci_name(priv->pdev), priv->rf_type, 240 priv->bbp_type, priv->specific_bbptype, priv->transceiver_type); 241 242 return 0; 243 } 244 245 static inline void adm8211_write_sram(struct ieee80211_hw *dev, 246 u32 addr, u32 data) 247 { 248 struct adm8211_priv *priv = dev->priv; 249 250 ADM8211_CSR_WRITE(WEPCTL, addr | ADM8211_WEPCTL_TABLE_WR | 251 (priv->pdev->revision < ADM8211_REV_BA ? 252 0 : ADM8211_WEPCTL_SEL_WEPTABLE )); 253 ADM8211_CSR_READ(WEPCTL); 254 msleep(1); 255 256 ADM8211_CSR_WRITE(WESK, data); 257 ADM8211_CSR_READ(WESK); 258 msleep(1); 259 } 260 261 static void adm8211_write_sram_bytes(struct ieee80211_hw *dev, 262 unsigned int addr, u8 *buf, 263 unsigned int len) 264 { 265 struct adm8211_priv *priv = dev->priv; 266 u32 reg = ADM8211_CSR_READ(WEPCTL); 267 unsigned int i; 268 269 if (priv->pdev->revision < ADM8211_REV_BA) { 270 for (i = 0; i < len; i += 2) { 271 u16 val = buf[i] | (buf[i + 1] << 8); 272 adm8211_write_sram(dev, addr + i / 2, val); 273 } 274 } else { 275 for (i = 0; i < len; i += 4) { 276 u32 val = (buf[i + 0] << 0 ) | (buf[i + 1] << 8 ) | 277 (buf[i + 2] << 16) | (buf[i + 3] << 24); 278 adm8211_write_sram(dev, addr + i / 4, val); 279 } 280 } 281 282 ADM8211_CSR_WRITE(WEPCTL, reg); 283 } 284 285 static void adm8211_clear_sram(struct ieee80211_hw *dev) 286 { 287 struct adm8211_priv *priv = dev->priv; 288 u32 reg = ADM8211_CSR_READ(WEPCTL); 289 unsigned int addr; 290 291 for (addr = 0; addr < ADM8211_SRAM_SIZE; addr++) 292 adm8211_write_sram(dev, addr, 0); 293 294 ADM8211_CSR_WRITE(WEPCTL, reg); 295 } 296 297 static int adm8211_get_stats(struct ieee80211_hw *dev, 298 struct ieee80211_low_level_stats *stats) 299 { 300 struct adm8211_priv *priv = dev->priv; 301 302 memcpy(stats, &priv->stats, sizeof(*stats)); 303 304 return 0; 305 } 306 307 static void adm8211_interrupt_tci(struct ieee80211_hw *dev) 308 { 309 struct adm8211_priv *priv = dev->priv; 310 unsigned int dirty_tx; 311 312 spin_lock(&priv->lock); 313 314 for (dirty_tx = priv->dirty_tx; priv->cur_tx - dirty_tx; dirty_tx++) { 315 unsigned int entry = dirty_tx % priv->tx_ring_size; 316 u32 status = le32_to_cpu(priv->tx_ring[entry].status); 317 struct ieee80211_tx_info *txi; 318 struct adm8211_tx_ring_info *info; 319 struct sk_buff *skb; 320 321 if (status & TDES0_CONTROL_OWN || 322 !(status & TDES0_CONTROL_DONE)) 323 break; 324 325 info = &priv->tx_buffers[entry]; 326 skb = info->skb; 327 txi = IEEE80211_SKB_CB(skb); 328 329 /* TODO: check TDES0_STATUS_TUF and TDES0_STATUS_TRO */ 330 331 pci_unmap_single(priv->pdev, info->mapping, 332 info->skb->len, PCI_DMA_TODEVICE); 333 334 ieee80211_tx_info_clear_status(txi); 335 336 skb_pull(skb, sizeof(struct adm8211_tx_hdr)); 337 memcpy(skb_push(skb, info->hdrlen), skb->cb, info->hdrlen); 338 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && 339 !(status & TDES0_STATUS_ES)) 340 txi->flags |= IEEE80211_TX_STAT_ACK; 341 342 ieee80211_tx_status_irqsafe(dev, skb); 343 344 info->skb = NULL; 345 } 346 347 if (priv->cur_tx - dirty_tx < priv->tx_ring_size - 2) 348 ieee80211_wake_queue(dev, 0); 349 350 priv->dirty_tx = dirty_tx; 351 spin_unlock(&priv->lock); 352 } 353 354 355 static void adm8211_interrupt_rci(struct ieee80211_hw *dev) 356 { 357 struct adm8211_priv *priv = dev->priv; 358 unsigned int entry = priv->cur_rx % priv->rx_ring_size; 359 u32 status; 360 unsigned int pktlen; 361 struct sk_buff *skb, *newskb; 362 unsigned int limit = priv->rx_ring_size; 363 u8 rssi, rate; 364 365 while (!(priv->rx_ring[entry].status & cpu_to_le32(RDES0_STATUS_OWN))) { 366 if (!limit--) 367 break; 368 369 status = le32_to_cpu(priv->rx_ring[entry].status); 370 rate = (status & RDES0_STATUS_RXDR) >> 12; 371 rssi = le32_to_cpu(priv->rx_ring[entry].length) & 372 RDES1_STATUS_RSSI; 373 374 pktlen = status & RDES0_STATUS_FL; 375 if (pktlen > RX_PKT_SIZE) { 376 if (net_ratelimit()) 377 wiphy_debug(dev->wiphy, "frame too long (%d)\n", 378 pktlen); 379 pktlen = RX_PKT_SIZE; 380 } 381 382 if (!priv->soft_rx_crc && status & RDES0_STATUS_ES) { 383 skb = NULL; /* old buffer will be reused */ 384 /* TODO: update RX error stats */ 385 /* TODO: check RDES0_STATUS_CRC*E */ 386 } else if (pktlen < RX_COPY_BREAK) { 387 skb = dev_alloc_skb(pktlen); 388 if (skb) { 389 pci_dma_sync_single_for_cpu( 390 priv->pdev, 391 priv->rx_buffers[entry].mapping, 392 pktlen, PCI_DMA_FROMDEVICE); 393 memcpy(skb_put(skb, pktlen), 394 skb_tail_pointer(priv->rx_buffers[entry].skb), 395 pktlen); 396 pci_dma_sync_single_for_device( 397 priv->pdev, 398 priv->rx_buffers[entry].mapping, 399 RX_PKT_SIZE, PCI_DMA_FROMDEVICE); 400 } 401 } else { 402 newskb = dev_alloc_skb(RX_PKT_SIZE); 403 if (newskb) { 404 skb = priv->rx_buffers[entry].skb; 405 skb_put(skb, pktlen); 406 pci_unmap_single( 407 priv->pdev, 408 priv->rx_buffers[entry].mapping, 409 RX_PKT_SIZE, PCI_DMA_FROMDEVICE); 410 priv->rx_buffers[entry].skb = newskb; 411 priv->rx_buffers[entry].mapping = 412 pci_map_single(priv->pdev, 413 skb_tail_pointer(newskb), 414 RX_PKT_SIZE, 415 PCI_DMA_FROMDEVICE); 416 } else { 417 skb = NULL; 418 /* TODO: update rx dropped stats */ 419 } 420 421 priv->rx_ring[entry].buffer1 = 422 cpu_to_le32(priv->rx_buffers[entry].mapping); 423 } 424 425 priv->rx_ring[entry].status = cpu_to_le32(RDES0_STATUS_OWN | 426 RDES0_STATUS_SQL); 427 priv->rx_ring[entry].length = 428 cpu_to_le32(RX_PKT_SIZE | 429 (entry == priv->rx_ring_size - 1 ? 430 RDES1_CONTROL_RER : 0)); 431 432 if (skb) { 433 struct ieee80211_rx_status rx_status = {0}; 434 435 if (priv->pdev->revision < ADM8211_REV_CA) 436 rx_status.signal = rssi; 437 else 438 rx_status.signal = 100 - rssi; 439 440 rx_status.rate_idx = rate; 441 442 rx_status.freq = adm8211_channels[priv->channel - 1].center_freq; 443 rx_status.band = IEEE80211_BAND_2GHZ; 444 445 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status)); 446 ieee80211_rx_irqsafe(dev, skb); 447 } 448 449 entry = (++priv->cur_rx) % priv->rx_ring_size; 450 } 451 452 /* TODO: check LPC and update stats? */ 453 } 454 455 456 static irqreturn_t adm8211_interrupt(int irq, void *dev_id) 457 { 458 #define ADM8211_INT(x) \ 459 do { \ 460 if (unlikely(stsr & ADM8211_STSR_ ## x)) \ 461 wiphy_debug(dev->wiphy, "%s\n", #x); \ 462 } while (0) 463 464 struct ieee80211_hw *dev = dev_id; 465 struct adm8211_priv *priv = dev->priv; 466 u32 stsr = ADM8211_CSR_READ(STSR); 467 ADM8211_CSR_WRITE(STSR, stsr); 468 if (stsr == 0xffffffff) 469 return IRQ_HANDLED; 470 471 if (!(stsr & (ADM8211_STSR_NISS | ADM8211_STSR_AISS))) 472 return IRQ_HANDLED; 473 474 if (stsr & ADM8211_STSR_RCI) 475 adm8211_interrupt_rci(dev); 476 if (stsr & ADM8211_STSR_TCI) 477 adm8211_interrupt_tci(dev); 478 479 ADM8211_INT(PCF); 480 ADM8211_INT(BCNTC); 481 ADM8211_INT(GPINT); 482 ADM8211_INT(ATIMTC); 483 ADM8211_INT(TSFTF); 484 ADM8211_INT(TSCZ); 485 ADM8211_INT(SQL); 486 ADM8211_INT(WEPTD); 487 ADM8211_INT(ATIME); 488 ADM8211_INT(TEIS); 489 ADM8211_INT(FBE); 490 ADM8211_INT(REIS); 491 ADM8211_INT(GPTT); 492 ADM8211_INT(RPS); 493 ADM8211_INT(RDU); 494 ADM8211_INT(TUF); 495 ADM8211_INT(TPS); 496 497 return IRQ_HANDLED; 498 499 #undef ADM8211_INT 500 } 501 502 #define WRITE_SYN(name,v_mask,v_shift,a_mask,a_shift,bits,prewrite,postwrite)\ 503 static void adm8211_rf_write_syn_ ## name (struct ieee80211_hw *dev, \ 504 u16 addr, u32 value) { \ 505 struct adm8211_priv *priv = dev->priv; \ 506 unsigned int i; \ 507 u32 reg, bitbuf; \ 508 \ 509 value &= v_mask; \ 510 addr &= a_mask; \ 511 bitbuf = (value << v_shift) | (addr << a_shift); \ 512 \ 513 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_1); \ 514 ADM8211_CSR_READ(SYNRF); \ 515 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_0); \ 516 ADM8211_CSR_READ(SYNRF); \ 517 \ 518 if (prewrite) { \ 519 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_WRITE_SYNDATA_0); \ 520 ADM8211_CSR_READ(SYNRF); \ 521 } \ 522 \ 523 for (i = 0; i <= bits; i++) { \ 524 if (bitbuf & (1 << (bits - i))) \ 525 reg = ADM8211_SYNRF_WRITE_SYNDATA_1; \ 526 else \ 527 reg = ADM8211_SYNRF_WRITE_SYNDATA_0; \ 528 \ 529 ADM8211_CSR_WRITE(SYNRF, reg); \ 530 ADM8211_CSR_READ(SYNRF); \ 531 \ 532 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_1); \ 533 ADM8211_CSR_READ(SYNRF); \ 534 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_0); \ 535 ADM8211_CSR_READ(SYNRF); \ 536 } \ 537 \ 538 if (postwrite == 1) { \ 539 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_0); \ 540 ADM8211_CSR_READ(SYNRF); \ 541 } \ 542 if (postwrite == 2) { \ 543 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_1); \ 544 ADM8211_CSR_READ(SYNRF); \ 545 } \ 546 \ 547 ADM8211_CSR_WRITE(SYNRF, 0); \ 548 ADM8211_CSR_READ(SYNRF); \ 549 } 550 551 WRITE_SYN(max2820, 0x00FFF, 0, 0x0F, 12, 15, 1, 1) 552 WRITE_SYN(al2210l, 0xFFFFF, 4, 0x0F, 0, 23, 1, 1) 553 WRITE_SYN(rfmd2958, 0x3FFFF, 0, 0x1F, 18, 23, 0, 1) 554 WRITE_SYN(rfmd2948, 0x0FFFF, 4, 0x0F, 0, 21, 0, 2) 555 556 #undef WRITE_SYN 557 558 static int adm8211_write_bbp(struct ieee80211_hw *dev, u8 addr, u8 data) 559 { 560 struct adm8211_priv *priv = dev->priv; 561 unsigned int timeout; 562 u32 reg; 563 564 timeout = 10; 565 while (timeout > 0) { 566 reg = ADM8211_CSR_READ(BBPCTL); 567 if (!(reg & (ADM8211_BBPCTL_WR | ADM8211_BBPCTL_RD))) 568 break; 569 timeout--; 570 msleep(2); 571 } 572 573 if (timeout == 0) { 574 wiphy_debug(dev->wiphy, 575 "adm8211_write_bbp(%d,%d) failed prewrite (reg=0x%08x)\n", 576 addr, data, reg); 577 return -ETIMEDOUT; 578 } 579 580 switch (priv->bbp_type) { 581 case ADM8211_TYPE_INTERSIL: 582 reg = ADM8211_BBPCTL_MMISEL; /* three wire interface */ 583 break; 584 case ADM8211_TYPE_RFMD: 585 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP | 586 (0x01 << 18); 587 break; 588 case ADM8211_TYPE_ADMTEK: 589 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP | 590 (0x05 << 18); 591 break; 592 } 593 reg |= ADM8211_BBPCTL_WR | (addr << 8) | data; 594 595 ADM8211_CSR_WRITE(BBPCTL, reg); 596 597 timeout = 10; 598 while (timeout > 0) { 599 reg = ADM8211_CSR_READ(BBPCTL); 600 if (!(reg & ADM8211_BBPCTL_WR)) 601 break; 602 timeout--; 603 msleep(2); 604 } 605 606 if (timeout == 0) { 607 ADM8211_CSR_WRITE(BBPCTL, ADM8211_CSR_READ(BBPCTL) & 608 ~ADM8211_BBPCTL_WR); 609 wiphy_debug(dev->wiphy, 610 "adm8211_write_bbp(%d,%d) failed postwrite (reg=0x%08x)\n", 611 addr, data, reg); 612 return -ETIMEDOUT; 613 } 614 615 return 0; 616 } 617 618 static int adm8211_rf_set_channel(struct ieee80211_hw *dev, unsigned int chan) 619 { 620 static const u32 adm8211_rfmd2958_reg5[] = 621 {0x22BD, 0x22D2, 0x22E8, 0x22FE, 0x2314, 0x232A, 0x2340, 622 0x2355, 0x236B, 0x2381, 0x2397, 0x23AD, 0x23C2, 0x23F7}; 623 static const u32 adm8211_rfmd2958_reg6[] = 624 {0x05D17, 0x3A2E8, 0x2E8BA, 0x22E8B, 0x1745D, 0x0BA2E, 0x00000, 625 0x345D1, 0x28BA2, 0x1D174, 0x11745, 0x05D17, 0x3A2E8, 0x11745}; 626 627 struct adm8211_priv *priv = dev->priv; 628 u8 ant_power = priv->ant_power > 0x3F ? 629 priv->eeprom->antenna_power[chan - 1] : priv->ant_power; 630 u8 tx_power = priv->tx_power > 0x3F ? 631 priv->eeprom->tx_power[chan - 1] : priv->tx_power; 632 u8 lpf_cutoff = priv->lpf_cutoff == 0xFF ? 633 priv->eeprom->lpf_cutoff[chan - 1] : priv->lpf_cutoff; 634 u8 lnags_thresh = priv->lnags_threshold == 0xFF ? 635 priv->eeprom->lnags_threshold[chan - 1] : priv->lnags_threshold; 636 u32 reg; 637 638 ADM8211_IDLE(); 639 640 /* Program synthesizer to new channel */ 641 switch (priv->transceiver_type) { 642 case ADM8211_RFMD2958: 643 case ADM8211_RFMD2958_RF3000_CONTROL_POWER: 644 adm8211_rf_write_syn_rfmd2958(dev, 0x00, 0x04007); 645 adm8211_rf_write_syn_rfmd2958(dev, 0x02, 0x00033); 646 647 adm8211_rf_write_syn_rfmd2958(dev, 0x05, 648 adm8211_rfmd2958_reg5[chan - 1]); 649 adm8211_rf_write_syn_rfmd2958(dev, 0x06, 650 adm8211_rfmd2958_reg6[chan - 1]); 651 break; 652 653 case ADM8211_RFMD2948: 654 adm8211_rf_write_syn_rfmd2948(dev, SI4126_MAIN_CONF, 655 SI4126_MAIN_XINDIV2); 656 adm8211_rf_write_syn_rfmd2948(dev, SI4126_POWERDOWN, 657 SI4126_POWERDOWN_PDIB | 658 SI4126_POWERDOWN_PDRB); 659 adm8211_rf_write_syn_rfmd2948(dev, SI4126_PHASE_DET_GAIN, 0); 660 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_N_DIV, 661 (chan == 14 ? 662 2110 : (2033 + (chan * 5)))); 663 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_N_DIV, 1496); 664 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_R_DIV, 44); 665 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_R_DIV, 44); 666 break; 667 668 case ADM8211_MAX2820: 669 adm8211_rf_write_syn_max2820(dev, 0x3, 670 (chan == 14 ? 0x054 : (0x7 + (chan * 5)))); 671 break; 672 673 case ADM8211_AL2210L: 674 adm8211_rf_write_syn_al2210l(dev, 0x0, 675 (chan == 14 ? 0x229B4 : (0x22967 + (chan * 5)))); 676 break; 677 678 default: 679 wiphy_debug(dev->wiphy, "unsupported transceiver type %d\n", 680 priv->transceiver_type); 681 break; 682 } 683 684 /* write BBP regs */ 685 if (priv->bbp_type == ADM8211_TYPE_RFMD) { 686 687 /* SMC 2635W specific? adm8211b doesn't use the 2948 though.. */ 688 /* TODO: remove if SMC 2635W doesn't need this */ 689 if (priv->transceiver_type == ADM8211_RFMD2948) { 690 reg = ADM8211_CSR_READ(GPIO); 691 reg &= 0xfffc0000; 692 reg |= ADM8211_CSR_GPIO_EN0; 693 if (chan != 14) 694 reg |= ADM8211_CSR_GPIO_O0; 695 ADM8211_CSR_WRITE(GPIO, reg); 696 } 697 698 if (priv->transceiver_type == ADM8211_RFMD2958) { 699 /* set PCNT2 */ 700 adm8211_rf_write_syn_rfmd2958(dev, 0x0B, 0x07100); 701 /* set PCNT1 P_DESIRED/MID_BIAS */ 702 reg = le16_to_cpu(priv->eeprom->cr49); 703 reg >>= 13; 704 reg <<= 15; 705 reg |= ant_power << 9; 706 adm8211_rf_write_syn_rfmd2958(dev, 0x0A, reg); 707 /* set TXRX TX_GAIN */ 708 adm8211_rf_write_syn_rfmd2958(dev, 0x09, 0x00050 | 709 (priv->pdev->revision < ADM8211_REV_CA ? tx_power : 0)); 710 } else { 711 reg = ADM8211_CSR_READ(PLCPHD); 712 reg &= 0xff00ffff; 713 reg |= tx_power << 18; 714 ADM8211_CSR_WRITE(PLCPHD, reg); 715 } 716 717 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF | 718 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST); 719 ADM8211_CSR_READ(SYNRF); 720 msleep(30); 721 722 /* RF3000 BBP */ 723 if (priv->transceiver_type != ADM8211_RFMD2958) 724 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT, 725 tx_power<<2); 726 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, lpf_cutoff); 727 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, lnags_thresh); 728 adm8211_write_bbp(dev, 0x1c, priv->pdev->revision == ADM8211_REV_BA ? 729 priv->eeprom->cr28 : 0); 730 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29); 731 732 ADM8211_CSR_WRITE(SYNRF, 0); 733 734 /* Nothing to do for ADMtek BBP */ 735 } else if (priv->bbp_type != ADM8211_TYPE_ADMTEK) 736 wiphy_debug(dev->wiphy, "unsupported BBP type %d\n", 737 priv->bbp_type); 738 739 ADM8211_RESTORE(); 740 741 /* update current channel for adhoc (and maybe AP mode) */ 742 reg = ADM8211_CSR_READ(CAP0); 743 reg &= ~0xF; 744 reg |= chan; 745 ADM8211_CSR_WRITE(CAP0, reg); 746 747 return 0; 748 } 749 750 static void adm8211_update_mode(struct ieee80211_hw *dev) 751 { 752 struct adm8211_priv *priv = dev->priv; 753 754 ADM8211_IDLE(); 755 756 priv->soft_rx_crc = 0; 757 switch (priv->mode) { 758 case NL80211_IFTYPE_STATION: 759 priv->nar &= ~(ADM8211_NAR_PR | ADM8211_NAR_EA); 760 priv->nar |= ADM8211_NAR_ST | ADM8211_NAR_SR; 761 break; 762 case NL80211_IFTYPE_ADHOC: 763 priv->nar &= ~ADM8211_NAR_PR; 764 priv->nar |= ADM8211_NAR_EA | ADM8211_NAR_ST | ADM8211_NAR_SR; 765 766 /* don't trust the error bits on rev 0x20 and up in adhoc */ 767 if (priv->pdev->revision >= ADM8211_REV_BA) 768 priv->soft_rx_crc = 1; 769 break; 770 case NL80211_IFTYPE_MONITOR: 771 priv->nar &= ~(ADM8211_NAR_EA | ADM8211_NAR_ST); 772 priv->nar |= ADM8211_NAR_PR | ADM8211_NAR_SR; 773 break; 774 } 775 776 ADM8211_RESTORE(); 777 } 778 779 static void adm8211_hw_init_syn(struct ieee80211_hw *dev) 780 { 781 struct adm8211_priv *priv = dev->priv; 782 783 switch (priv->transceiver_type) { 784 case ADM8211_RFMD2958: 785 case ADM8211_RFMD2958_RF3000_CONTROL_POWER: 786 /* comments taken from ADMtek vendor driver */ 787 788 /* Reset RF2958 after power on */ 789 adm8211_rf_write_syn_rfmd2958(dev, 0x1F, 0x00000); 790 /* Initialize RF VCO Core Bias to maximum */ 791 adm8211_rf_write_syn_rfmd2958(dev, 0x0C, 0x3001F); 792 /* Initialize IF PLL */ 793 adm8211_rf_write_syn_rfmd2958(dev, 0x01, 0x29C03); 794 /* Initialize IF PLL Coarse Tuning */ 795 adm8211_rf_write_syn_rfmd2958(dev, 0x03, 0x1FF6F); 796 /* Initialize RF PLL */ 797 adm8211_rf_write_syn_rfmd2958(dev, 0x04, 0x29403); 798 /* Initialize RF PLL Coarse Tuning */ 799 adm8211_rf_write_syn_rfmd2958(dev, 0x07, 0x1456F); 800 /* Initialize TX gain and filter BW (R9) */ 801 adm8211_rf_write_syn_rfmd2958(dev, 0x09, 802 (priv->transceiver_type == ADM8211_RFMD2958 ? 803 0x10050 : 0x00050)); 804 /* Initialize CAL register */ 805 adm8211_rf_write_syn_rfmd2958(dev, 0x08, 0x3FFF8); 806 break; 807 808 case ADM8211_MAX2820: 809 adm8211_rf_write_syn_max2820(dev, 0x1, 0x01E); 810 adm8211_rf_write_syn_max2820(dev, 0x2, 0x001); 811 adm8211_rf_write_syn_max2820(dev, 0x3, 0x054); 812 adm8211_rf_write_syn_max2820(dev, 0x4, 0x310); 813 adm8211_rf_write_syn_max2820(dev, 0x5, 0x000); 814 break; 815 816 case ADM8211_AL2210L: 817 adm8211_rf_write_syn_al2210l(dev, 0x0, 0x0196C); 818 adm8211_rf_write_syn_al2210l(dev, 0x1, 0x007CB); 819 adm8211_rf_write_syn_al2210l(dev, 0x2, 0x3582F); 820 adm8211_rf_write_syn_al2210l(dev, 0x3, 0x010A9); 821 adm8211_rf_write_syn_al2210l(dev, 0x4, 0x77280); 822 adm8211_rf_write_syn_al2210l(dev, 0x5, 0x45641); 823 adm8211_rf_write_syn_al2210l(dev, 0x6, 0xEA130); 824 adm8211_rf_write_syn_al2210l(dev, 0x7, 0x80000); 825 adm8211_rf_write_syn_al2210l(dev, 0x8, 0x7850F); 826 adm8211_rf_write_syn_al2210l(dev, 0x9, 0xF900C); 827 adm8211_rf_write_syn_al2210l(dev, 0xA, 0x00000); 828 adm8211_rf_write_syn_al2210l(dev, 0xB, 0x00000); 829 break; 830 831 case ADM8211_RFMD2948: 832 default: 833 break; 834 } 835 } 836 837 static int adm8211_hw_init_bbp(struct ieee80211_hw *dev) 838 { 839 struct adm8211_priv *priv = dev->priv; 840 u32 reg; 841 842 /* write addresses */ 843 if (priv->bbp_type == ADM8211_TYPE_INTERSIL) { 844 ADM8211_CSR_WRITE(MMIWA, 0x100E0C0A); 845 ADM8211_CSR_WRITE(MMIRD0, 0x00007C7E); 846 ADM8211_CSR_WRITE(MMIRD1, 0x00100000); 847 } else if (priv->bbp_type == ADM8211_TYPE_RFMD || 848 priv->bbp_type == ADM8211_TYPE_ADMTEK) { 849 /* check specific BBP type */ 850 switch (priv->specific_bbptype) { 851 case ADM8211_BBP_RFMD3000: 852 case ADM8211_BBP_RFMD3002: 853 ADM8211_CSR_WRITE(MMIWA, 0x00009101); 854 ADM8211_CSR_WRITE(MMIRD0, 0x00000301); 855 break; 856 857 case ADM8211_BBP_ADM8011: 858 ADM8211_CSR_WRITE(MMIWA, 0x00008903); 859 ADM8211_CSR_WRITE(MMIRD0, 0x00001716); 860 861 reg = ADM8211_CSR_READ(BBPCTL); 862 reg &= ~ADM8211_BBPCTL_TYPE; 863 reg |= 0x5 << 18; 864 ADM8211_CSR_WRITE(BBPCTL, reg); 865 break; 866 } 867 868 switch (priv->pdev->revision) { 869 case ADM8211_REV_CA: 870 if (priv->transceiver_type == ADM8211_RFMD2958 || 871 priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER || 872 priv->transceiver_type == ADM8211_RFMD2948) 873 ADM8211_CSR_WRITE(SYNCTL, 0x1 << 22); 874 else if (priv->transceiver_type == ADM8211_MAX2820 || 875 priv->transceiver_type == ADM8211_AL2210L) 876 ADM8211_CSR_WRITE(SYNCTL, 0x3 << 22); 877 break; 878 879 case ADM8211_REV_BA: 880 reg = ADM8211_CSR_READ(MMIRD1); 881 reg &= 0x0000FFFF; 882 reg |= 0x7e100000; 883 ADM8211_CSR_WRITE(MMIRD1, reg); 884 break; 885 886 case ADM8211_REV_AB: 887 case ADM8211_REV_AF: 888 default: 889 ADM8211_CSR_WRITE(MMIRD1, 0x7e100000); 890 break; 891 } 892 893 /* For RFMD */ 894 ADM8211_CSR_WRITE(MACTEST, 0x800); 895 } 896 897 adm8211_hw_init_syn(dev); 898 899 /* Set RF Power control IF pin to PE1+PHYRST# */ 900 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF | 901 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST); 902 ADM8211_CSR_READ(SYNRF); 903 msleep(20); 904 905 /* write BBP regs */ 906 if (priv->bbp_type == ADM8211_TYPE_RFMD) { 907 /* RF3000 BBP */ 908 /* another set: 909 * 11: c8 910 * 14: 14 911 * 15: 50 (chan 1..13; chan 14: d0) 912 * 1c: 00 913 * 1d: 84 914 */ 915 adm8211_write_bbp(dev, RF3000_CCA_CTRL, 0x80); 916 /* antenna selection: diversity */ 917 adm8211_write_bbp(dev, RF3000_DIVERSITY__RSSI, 0x80); 918 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT, 0x74); 919 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, 0x38); 920 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, 0x40); 921 922 if (priv->eeprom->major_version < 2) { 923 adm8211_write_bbp(dev, 0x1c, 0x00); 924 adm8211_write_bbp(dev, 0x1d, 0x80); 925 } else { 926 if (priv->pdev->revision == ADM8211_REV_BA) 927 adm8211_write_bbp(dev, 0x1c, priv->eeprom->cr28); 928 else 929 adm8211_write_bbp(dev, 0x1c, 0x00); 930 931 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29); 932 } 933 } else if (priv->bbp_type == ADM8211_TYPE_ADMTEK) { 934 /* reset baseband */ 935 adm8211_write_bbp(dev, 0x00, 0xFF); 936 /* antenna selection: diversity */ 937 adm8211_write_bbp(dev, 0x07, 0x0A); 938 939 /* TODO: find documentation for this */ 940 switch (priv->transceiver_type) { 941 case ADM8211_RFMD2958: 942 case ADM8211_RFMD2958_RF3000_CONTROL_POWER: 943 adm8211_write_bbp(dev, 0x00, 0x00); 944 adm8211_write_bbp(dev, 0x01, 0x00); 945 adm8211_write_bbp(dev, 0x02, 0x00); 946 adm8211_write_bbp(dev, 0x03, 0x00); 947 adm8211_write_bbp(dev, 0x06, 0x0f); 948 adm8211_write_bbp(dev, 0x09, 0x00); 949 adm8211_write_bbp(dev, 0x0a, 0x00); 950 adm8211_write_bbp(dev, 0x0b, 0x00); 951 adm8211_write_bbp(dev, 0x0c, 0x00); 952 adm8211_write_bbp(dev, 0x0f, 0xAA); 953 adm8211_write_bbp(dev, 0x10, 0x8c); 954 adm8211_write_bbp(dev, 0x11, 0x43); 955 adm8211_write_bbp(dev, 0x18, 0x40); 956 adm8211_write_bbp(dev, 0x20, 0x23); 957 adm8211_write_bbp(dev, 0x21, 0x02); 958 adm8211_write_bbp(dev, 0x22, 0x28); 959 adm8211_write_bbp(dev, 0x23, 0x30); 960 adm8211_write_bbp(dev, 0x24, 0x2d); 961 adm8211_write_bbp(dev, 0x28, 0x35); 962 adm8211_write_bbp(dev, 0x2a, 0x8c); 963 adm8211_write_bbp(dev, 0x2b, 0x81); 964 adm8211_write_bbp(dev, 0x2c, 0x44); 965 adm8211_write_bbp(dev, 0x2d, 0x0A); 966 adm8211_write_bbp(dev, 0x29, 0x40); 967 adm8211_write_bbp(dev, 0x60, 0x08); 968 adm8211_write_bbp(dev, 0x64, 0x01); 969 break; 970 971 case ADM8211_MAX2820: 972 adm8211_write_bbp(dev, 0x00, 0x00); 973 adm8211_write_bbp(dev, 0x01, 0x00); 974 adm8211_write_bbp(dev, 0x02, 0x00); 975 adm8211_write_bbp(dev, 0x03, 0x00); 976 adm8211_write_bbp(dev, 0x06, 0x0f); 977 adm8211_write_bbp(dev, 0x09, 0x05); 978 adm8211_write_bbp(dev, 0x0a, 0x02); 979 adm8211_write_bbp(dev, 0x0b, 0x00); 980 adm8211_write_bbp(dev, 0x0c, 0x0f); 981 adm8211_write_bbp(dev, 0x0f, 0x55); 982 adm8211_write_bbp(dev, 0x10, 0x8d); 983 adm8211_write_bbp(dev, 0x11, 0x43); 984 adm8211_write_bbp(dev, 0x18, 0x4a); 985 adm8211_write_bbp(dev, 0x20, 0x20); 986 adm8211_write_bbp(dev, 0x21, 0x02); 987 adm8211_write_bbp(dev, 0x22, 0x23); 988 adm8211_write_bbp(dev, 0x23, 0x30); 989 adm8211_write_bbp(dev, 0x24, 0x2d); 990 adm8211_write_bbp(dev, 0x2a, 0x8c); 991 adm8211_write_bbp(dev, 0x2b, 0x81); 992 adm8211_write_bbp(dev, 0x2c, 0x44); 993 adm8211_write_bbp(dev, 0x29, 0x4a); 994 adm8211_write_bbp(dev, 0x60, 0x2b); 995 adm8211_write_bbp(dev, 0x64, 0x01); 996 break; 997 998 case ADM8211_AL2210L: 999 adm8211_write_bbp(dev, 0x00, 0x00); 1000 adm8211_write_bbp(dev, 0x01, 0x00); 1001 adm8211_write_bbp(dev, 0x02, 0x00); 1002 adm8211_write_bbp(dev, 0x03, 0x00); 1003 adm8211_write_bbp(dev, 0x06, 0x0f); 1004 adm8211_write_bbp(dev, 0x07, 0x05); 1005 adm8211_write_bbp(dev, 0x08, 0x03); 1006 adm8211_write_bbp(dev, 0x09, 0x00); 1007 adm8211_write_bbp(dev, 0x0a, 0x00); 1008 adm8211_write_bbp(dev, 0x0b, 0x00); 1009 adm8211_write_bbp(dev, 0x0c, 0x10); 1010 adm8211_write_bbp(dev, 0x0f, 0x55); 1011 adm8211_write_bbp(dev, 0x10, 0x8d); 1012 adm8211_write_bbp(dev, 0x11, 0x43); 1013 adm8211_write_bbp(dev, 0x18, 0x4a); 1014 adm8211_write_bbp(dev, 0x20, 0x20); 1015 adm8211_write_bbp(dev, 0x21, 0x02); 1016 adm8211_write_bbp(dev, 0x22, 0x23); 1017 adm8211_write_bbp(dev, 0x23, 0x30); 1018 adm8211_write_bbp(dev, 0x24, 0x2d); 1019 adm8211_write_bbp(dev, 0x2a, 0xaa); 1020 adm8211_write_bbp(dev, 0x2b, 0x81); 1021 adm8211_write_bbp(dev, 0x2c, 0x44); 1022 adm8211_write_bbp(dev, 0x29, 0xfa); 1023 adm8211_write_bbp(dev, 0x60, 0x2d); 1024 adm8211_write_bbp(dev, 0x64, 0x01); 1025 break; 1026 1027 case ADM8211_RFMD2948: 1028 break; 1029 1030 default: 1031 wiphy_debug(dev->wiphy, "unsupported transceiver %d\n", 1032 priv->transceiver_type); 1033 break; 1034 } 1035 } else 1036 wiphy_debug(dev->wiphy, "unsupported BBP %d\n", priv->bbp_type); 1037 1038 ADM8211_CSR_WRITE(SYNRF, 0); 1039 1040 /* Set RF CAL control source to MAC control */ 1041 reg = ADM8211_CSR_READ(SYNCTL); 1042 reg |= ADM8211_SYNCTL_SELCAL; 1043 ADM8211_CSR_WRITE(SYNCTL, reg); 1044 1045 return 0; 1046 } 1047 1048 /* configures hw beacons/probe responses */ 1049 static int adm8211_set_rate(struct ieee80211_hw *dev) 1050 { 1051 struct adm8211_priv *priv = dev->priv; 1052 u32 reg; 1053 int i = 0; 1054 u8 rate_buf[12] = {0}; 1055 1056 /* write supported rates */ 1057 if (priv->pdev->revision != ADM8211_REV_BA) { 1058 rate_buf[0] = ARRAY_SIZE(adm8211_rates); 1059 for (i = 0; i < ARRAY_SIZE(adm8211_rates); i++) 1060 rate_buf[i + 1] = (adm8211_rates[i].bitrate / 5) | 0x80; 1061 } else { 1062 /* workaround for rev BA specific bug */ 1063 rate_buf[0] = 0x04; 1064 rate_buf[1] = 0x82; 1065 rate_buf[2] = 0x04; 1066 rate_buf[3] = 0x0b; 1067 rate_buf[4] = 0x16; 1068 } 1069 1070 adm8211_write_sram_bytes(dev, ADM8211_SRAM_SUPP_RATE, rate_buf, 1071 ARRAY_SIZE(adm8211_rates) + 1); 1072 1073 reg = ADM8211_CSR_READ(PLCPHD) & 0x00FFFFFF; /* keep bits 0-23 */ 1074 reg |= 1 << 15; /* short preamble */ 1075 reg |= 110 << 24; 1076 ADM8211_CSR_WRITE(PLCPHD, reg); 1077 1078 /* MTMLT = 512 TU (max TX MSDU lifetime) 1079 * BCNTSIG = plcp_signal (beacon, probe resp, and atim TX rate) 1080 * SRTYLIM = 224 (short retry limit, TX header value is default) */ 1081 ADM8211_CSR_WRITE(TXLMT, (512 << 16) | (110 << 8) | (224 << 0)); 1082 1083 return 0; 1084 } 1085 1086 static void adm8211_hw_init(struct ieee80211_hw *dev) 1087 { 1088 struct adm8211_priv *priv = dev->priv; 1089 u32 reg; 1090 u8 cline; 1091 1092 reg = ADM8211_CSR_READ(PAR); 1093 reg |= ADM8211_PAR_MRLE | ADM8211_PAR_MRME; 1094 reg &= ~(ADM8211_PAR_BAR | ADM8211_PAR_CAL); 1095 1096 if (!pci_set_mwi(priv->pdev)) { 1097 reg |= 0x1 << 24; 1098 pci_read_config_byte(priv->pdev, PCI_CACHE_LINE_SIZE, &cline); 1099 1100 switch (cline) { 1101 case 0x8: 1102 reg |= (0x1 << 14); 1103 break; 1104 case 0x10: 1105 reg |= (0x2 << 14); 1106 break; 1107 case 0x20: 1108 reg |= (0x3 << 14); 1109 break; 1110 default: 1111 reg |= (0x0 << 14); 1112 break; 1113 } 1114 } 1115 1116 ADM8211_CSR_WRITE(PAR, reg); 1117 1118 reg = ADM8211_CSR_READ(CSR_TEST1); 1119 reg &= ~(0xF << 28); 1120 reg |= (1 << 28) | (1 << 31); 1121 ADM8211_CSR_WRITE(CSR_TEST1, reg); 1122 1123 /* lose link after 4 lost beacons */ 1124 reg = (0x04 << 21) | ADM8211_WCSR_TSFTWE | ADM8211_WCSR_LSOE; 1125 ADM8211_CSR_WRITE(WCSR, reg); 1126 1127 /* Disable APM, enable receive FIFO threshold, and set drain receive 1128 * threshold to store-and-forward */ 1129 reg = ADM8211_CSR_READ(CMDR); 1130 reg &= ~(ADM8211_CMDR_APM | ADM8211_CMDR_DRT); 1131 reg |= ADM8211_CMDR_RTE | ADM8211_CMDR_DRT_SF; 1132 ADM8211_CSR_WRITE(CMDR, reg); 1133 1134 adm8211_set_rate(dev); 1135 1136 /* 4-bit values: 1137 * PWR1UP = 8 * 2 ms 1138 * PWR0PAPE = 8 us or 5 us 1139 * PWR1PAPE = 1 us or 3 us 1140 * PWR0TRSW = 5 us 1141 * PWR1TRSW = 12 us 1142 * PWR0PE2 = 13 us 1143 * PWR1PE2 = 1 us 1144 * PWR0TXPE = 8 or 6 */ 1145 if (priv->pdev->revision < ADM8211_REV_CA) 1146 ADM8211_CSR_WRITE(TOFS2, 0x8815cd18); 1147 else 1148 ADM8211_CSR_WRITE(TOFS2, 0x8535cd16); 1149 1150 /* Enable store and forward for transmit */ 1151 priv->nar = ADM8211_NAR_SF | ADM8211_NAR_PB; 1152 ADM8211_CSR_WRITE(NAR, priv->nar); 1153 1154 /* Reset RF */ 1155 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_RADIO); 1156 ADM8211_CSR_READ(SYNRF); 1157 msleep(10); 1158 ADM8211_CSR_WRITE(SYNRF, 0); 1159 ADM8211_CSR_READ(SYNRF); 1160 msleep(5); 1161 1162 /* Set CFP Max Duration to 0x10 TU */ 1163 reg = ADM8211_CSR_READ(CFPP); 1164 reg &= ~(0xffff << 8); 1165 reg |= 0x0010 << 8; 1166 ADM8211_CSR_WRITE(CFPP, reg); 1167 1168 /* USCNT = 0x16 (number of system clocks, 22 MHz, in 1us 1169 * TUCNT = 0x3ff - Tu counter 1024 us */ 1170 ADM8211_CSR_WRITE(TOFS0, (0x16 << 24) | 0x3ff); 1171 1172 /* SLOT=20 us, SIFS=110 cycles of 22 MHz (5 us), 1173 * DIFS=50 us, EIFS=100 us */ 1174 if (priv->pdev->revision < ADM8211_REV_CA) 1175 ADM8211_CSR_WRITE(IFST, (20 << 23) | (110 << 15) | 1176 (50 << 9) | 100); 1177 else 1178 ADM8211_CSR_WRITE(IFST, (20 << 23) | (24 << 15) | 1179 (50 << 9) | 100); 1180 1181 /* PCNT = 1 (MAC idle time awake/sleep, unit S) 1182 * RMRD = 2346 * 8 + 1 us (max RX duration) */ 1183 ADM8211_CSR_WRITE(RMD, (1 << 16) | 18769); 1184 1185 /* MART=65535 us, MIRT=256 us, TSFTOFST=0 us */ 1186 ADM8211_CSR_WRITE(RSPT, 0xffffff00); 1187 1188 /* Initialize BBP (and SYN) */ 1189 adm8211_hw_init_bbp(dev); 1190 1191 /* make sure interrupts are off */ 1192 ADM8211_CSR_WRITE(IER, 0); 1193 1194 /* ACK interrupts */ 1195 ADM8211_CSR_WRITE(STSR, ADM8211_CSR_READ(STSR)); 1196 1197 /* Setup WEP (turns it off for now) */ 1198 reg = ADM8211_CSR_READ(MACTEST); 1199 reg &= ~(7 << 20); 1200 ADM8211_CSR_WRITE(MACTEST, reg); 1201 1202 reg = ADM8211_CSR_READ(WEPCTL); 1203 reg &= ~ADM8211_WEPCTL_WEPENABLE; 1204 reg |= ADM8211_WEPCTL_WEPRXBYP; 1205 ADM8211_CSR_WRITE(WEPCTL, reg); 1206 1207 /* Clear the missed-packet counter. */ 1208 ADM8211_CSR_READ(LPC); 1209 } 1210 1211 static int adm8211_hw_reset(struct ieee80211_hw *dev) 1212 { 1213 struct adm8211_priv *priv = dev->priv; 1214 u32 reg, tmp; 1215 int timeout = 100; 1216 1217 /* Power-on issue */ 1218 /* TODO: check if this is necessary */ 1219 ADM8211_CSR_WRITE(FRCTL, 0); 1220 1221 /* Reset the chip */ 1222 tmp = ADM8211_CSR_READ(PAR); 1223 ADM8211_CSR_WRITE(PAR, ADM8211_PAR_SWR); 1224 1225 while ((ADM8211_CSR_READ(PAR) & ADM8211_PAR_SWR) && timeout--) 1226 msleep(50); 1227 1228 if (timeout <= 0) 1229 return -ETIMEDOUT; 1230 1231 ADM8211_CSR_WRITE(PAR, tmp); 1232 1233 if (priv->pdev->revision == ADM8211_REV_BA && 1234 (priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER || 1235 priv->transceiver_type == ADM8211_RFMD2958)) { 1236 reg = ADM8211_CSR_READ(CSR_TEST1); 1237 reg |= (1 << 4) | (1 << 5); 1238 ADM8211_CSR_WRITE(CSR_TEST1, reg); 1239 } else if (priv->pdev->revision == ADM8211_REV_CA) { 1240 reg = ADM8211_CSR_READ(CSR_TEST1); 1241 reg &= ~((1 << 4) | (1 << 5)); 1242 ADM8211_CSR_WRITE(CSR_TEST1, reg); 1243 } 1244 1245 ADM8211_CSR_WRITE(FRCTL, 0); 1246 1247 reg = ADM8211_CSR_READ(CSR_TEST0); 1248 reg |= ADM8211_CSR_TEST0_EPRLD; /* EEPROM Recall */ 1249 ADM8211_CSR_WRITE(CSR_TEST0, reg); 1250 1251 adm8211_clear_sram(dev); 1252 1253 return 0; 1254 } 1255 1256 static u64 adm8211_get_tsft(struct ieee80211_hw *dev, 1257 struct ieee80211_vif *vif) 1258 { 1259 struct adm8211_priv *priv = dev->priv; 1260 u32 tsftl; 1261 u64 tsft; 1262 1263 tsftl = ADM8211_CSR_READ(TSFTL); 1264 tsft = ADM8211_CSR_READ(TSFTH); 1265 tsft <<= 32; 1266 tsft |= tsftl; 1267 1268 return tsft; 1269 } 1270 1271 static void adm8211_set_interval(struct ieee80211_hw *dev, 1272 unsigned short bi, unsigned short li) 1273 { 1274 struct adm8211_priv *priv = dev->priv; 1275 u32 reg; 1276 1277 /* BP (beacon interval) = data->beacon_interval 1278 * LI (listen interval) = data->listen_interval (in beacon intervals) */ 1279 reg = (bi << 16) | li; 1280 ADM8211_CSR_WRITE(BPLI, reg); 1281 } 1282 1283 static void adm8211_set_bssid(struct ieee80211_hw *dev, const u8 *bssid) 1284 { 1285 struct adm8211_priv *priv = dev->priv; 1286 u32 reg; 1287 1288 ADM8211_CSR_WRITE(BSSID0, le32_to_cpu(*(__le32 *)bssid)); 1289 reg = ADM8211_CSR_READ(ABDA1); 1290 reg &= 0x0000ffff; 1291 reg |= (bssid[4] << 16) | (bssid[5] << 24); 1292 ADM8211_CSR_WRITE(ABDA1, reg); 1293 } 1294 1295 static int adm8211_config(struct ieee80211_hw *dev, u32 changed) 1296 { 1297 struct adm8211_priv *priv = dev->priv; 1298 struct ieee80211_conf *conf = &dev->conf; 1299 int channel = 1300 ieee80211_frequency_to_channel(conf->chandef.chan->center_freq); 1301 1302 if (channel != priv->channel) { 1303 priv->channel = channel; 1304 adm8211_rf_set_channel(dev, priv->channel); 1305 } 1306 1307 return 0; 1308 } 1309 1310 static void adm8211_bss_info_changed(struct ieee80211_hw *dev, 1311 struct ieee80211_vif *vif, 1312 struct ieee80211_bss_conf *conf, 1313 u32 changes) 1314 { 1315 struct adm8211_priv *priv = dev->priv; 1316 1317 if (!(changes & BSS_CHANGED_BSSID)) 1318 return; 1319 1320 if (!ether_addr_equal(conf->bssid, priv->bssid)) { 1321 adm8211_set_bssid(dev, conf->bssid); 1322 memcpy(priv->bssid, conf->bssid, ETH_ALEN); 1323 } 1324 } 1325 1326 static u64 adm8211_prepare_multicast(struct ieee80211_hw *hw, 1327 struct netdev_hw_addr_list *mc_list) 1328 { 1329 unsigned int bit_nr; 1330 u32 mc_filter[2]; 1331 struct netdev_hw_addr *ha; 1332 1333 mc_filter[1] = mc_filter[0] = 0; 1334 1335 netdev_hw_addr_list_for_each(ha, mc_list) { 1336 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26; 1337 1338 bit_nr &= 0x3F; 1339 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31); 1340 } 1341 1342 return mc_filter[0] | ((u64)(mc_filter[1]) << 32); 1343 } 1344 1345 static void adm8211_configure_filter(struct ieee80211_hw *dev, 1346 unsigned int changed_flags, 1347 unsigned int *total_flags, 1348 u64 multicast) 1349 { 1350 static const u8 bcast[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; 1351 struct adm8211_priv *priv = dev->priv; 1352 unsigned int new_flags; 1353 u32 mc_filter[2]; 1354 1355 mc_filter[0] = multicast; 1356 mc_filter[1] = multicast >> 32; 1357 1358 new_flags = 0; 1359 1360 if (*total_flags & FIF_ALLMULTI || multicast == ~(0ULL)) { 1361 new_flags |= FIF_ALLMULTI; 1362 priv->nar &= ~ADM8211_NAR_PR; 1363 priv->nar |= ADM8211_NAR_MM; 1364 mc_filter[1] = mc_filter[0] = ~0; 1365 } else { 1366 priv->nar &= ~(ADM8211_NAR_MM | ADM8211_NAR_PR); 1367 } 1368 1369 ADM8211_IDLE_RX(); 1370 1371 ADM8211_CSR_WRITE(MAR0, mc_filter[0]); 1372 ADM8211_CSR_WRITE(MAR1, mc_filter[1]); 1373 ADM8211_CSR_READ(NAR); 1374 1375 if (priv->nar & ADM8211_NAR_PR) 1376 ieee80211_hw_set(dev, RX_INCLUDES_FCS); 1377 else 1378 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, dev->flags); 1379 1380 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) 1381 adm8211_set_bssid(dev, bcast); 1382 else 1383 adm8211_set_bssid(dev, priv->bssid); 1384 1385 ADM8211_RESTORE(); 1386 1387 *total_flags = new_flags; 1388 } 1389 1390 static int adm8211_add_interface(struct ieee80211_hw *dev, 1391 struct ieee80211_vif *vif) 1392 { 1393 struct adm8211_priv *priv = dev->priv; 1394 if (priv->mode != NL80211_IFTYPE_MONITOR) 1395 return -EOPNOTSUPP; 1396 1397 switch (vif->type) { 1398 case NL80211_IFTYPE_STATION: 1399 priv->mode = vif->type; 1400 break; 1401 default: 1402 return -EOPNOTSUPP; 1403 } 1404 1405 ADM8211_IDLE(); 1406 1407 ADM8211_CSR_WRITE(PAR0, le32_to_cpu(*(__le32 *)vif->addr)); 1408 ADM8211_CSR_WRITE(PAR1, le16_to_cpu(*(__le16 *)(vif->addr + 4))); 1409 1410 adm8211_update_mode(dev); 1411 1412 ADM8211_RESTORE(); 1413 1414 return 0; 1415 } 1416 1417 static void adm8211_remove_interface(struct ieee80211_hw *dev, 1418 struct ieee80211_vif *vif) 1419 { 1420 struct adm8211_priv *priv = dev->priv; 1421 priv->mode = NL80211_IFTYPE_MONITOR; 1422 } 1423 1424 static int adm8211_init_rings(struct ieee80211_hw *dev) 1425 { 1426 struct adm8211_priv *priv = dev->priv; 1427 struct adm8211_desc *desc = NULL; 1428 struct adm8211_rx_ring_info *rx_info; 1429 struct adm8211_tx_ring_info *tx_info; 1430 unsigned int i; 1431 1432 for (i = 0; i < priv->rx_ring_size; i++) { 1433 desc = &priv->rx_ring[i]; 1434 desc->status = 0; 1435 desc->length = cpu_to_le32(RX_PKT_SIZE); 1436 priv->rx_buffers[i].skb = NULL; 1437 } 1438 /* Mark the end of RX ring; hw returns to base address after this 1439 * descriptor */ 1440 desc->length |= cpu_to_le32(RDES1_CONTROL_RER); 1441 1442 for (i = 0; i < priv->rx_ring_size; i++) { 1443 desc = &priv->rx_ring[i]; 1444 rx_info = &priv->rx_buffers[i]; 1445 1446 rx_info->skb = dev_alloc_skb(RX_PKT_SIZE); 1447 if (rx_info->skb == NULL) 1448 break; 1449 rx_info->mapping = pci_map_single(priv->pdev, 1450 skb_tail_pointer(rx_info->skb), 1451 RX_PKT_SIZE, 1452 PCI_DMA_FROMDEVICE); 1453 desc->buffer1 = cpu_to_le32(rx_info->mapping); 1454 desc->status = cpu_to_le32(RDES0_STATUS_OWN | RDES0_STATUS_SQL); 1455 } 1456 1457 /* Setup TX ring. TX buffers descriptors will be filled in as needed */ 1458 for (i = 0; i < priv->tx_ring_size; i++) { 1459 desc = &priv->tx_ring[i]; 1460 tx_info = &priv->tx_buffers[i]; 1461 1462 tx_info->skb = NULL; 1463 tx_info->mapping = 0; 1464 desc->status = 0; 1465 } 1466 desc->length = cpu_to_le32(TDES1_CONTROL_TER); 1467 1468 priv->cur_rx = priv->cur_tx = priv->dirty_tx = 0; 1469 ADM8211_CSR_WRITE(RDB, priv->rx_ring_dma); 1470 ADM8211_CSR_WRITE(TDBD, priv->tx_ring_dma); 1471 1472 return 0; 1473 } 1474 1475 static void adm8211_free_rings(struct ieee80211_hw *dev) 1476 { 1477 struct adm8211_priv *priv = dev->priv; 1478 unsigned int i; 1479 1480 for (i = 0; i < priv->rx_ring_size; i++) { 1481 if (!priv->rx_buffers[i].skb) 1482 continue; 1483 1484 pci_unmap_single( 1485 priv->pdev, 1486 priv->rx_buffers[i].mapping, 1487 RX_PKT_SIZE, PCI_DMA_FROMDEVICE); 1488 1489 dev_kfree_skb(priv->rx_buffers[i].skb); 1490 } 1491 1492 for (i = 0; i < priv->tx_ring_size; i++) { 1493 if (!priv->tx_buffers[i].skb) 1494 continue; 1495 1496 pci_unmap_single(priv->pdev, 1497 priv->tx_buffers[i].mapping, 1498 priv->tx_buffers[i].skb->len, 1499 PCI_DMA_TODEVICE); 1500 1501 dev_kfree_skb(priv->tx_buffers[i].skb); 1502 } 1503 } 1504 1505 static int adm8211_start(struct ieee80211_hw *dev) 1506 { 1507 struct adm8211_priv *priv = dev->priv; 1508 int retval; 1509 1510 /* Power up MAC and RF chips */ 1511 retval = adm8211_hw_reset(dev); 1512 if (retval) { 1513 wiphy_err(dev->wiphy, "hardware reset failed\n"); 1514 goto fail; 1515 } 1516 1517 retval = adm8211_init_rings(dev); 1518 if (retval) { 1519 wiphy_err(dev->wiphy, "failed to initialize rings\n"); 1520 goto fail; 1521 } 1522 1523 /* Init hardware */ 1524 adm8211_hw_init(dev); 1525 adm8211_rf_set_channel(dev, priv->channel); 1526 1527 retval = request_irq(priv->pdev->irq, adm8211_interrupt, 1528 IRQF_SHARED, "adm8211", dev); 1529 if (retval) { 1530 wiphy_err(dev->wiphy, "failed to register IRQ handler\n"); 1531 goto fail; 1532 } 1533 1534 ADM8211_CSR_WRITE(IER, ADM8211_IER_NIE | ADM8211_IER_AIE | 1535 ADM8211_IER_RCIE | ADM8211_IER_TCIE | 1536 ADM8211_IER_TDUIE | ADM8211_IER_GPTIE); 1537 priv->mode = NL80211_IFTYPE_MONITOR; 1538 adm8211_update_mode(dev); 1539 ADM8211_CSR_WRITE(RDR, 0); 1540 1541 adm8211_set_interval(dev, 100, 10); 1542 return 0; 1543 1544 fail: 1545 return retval; 1546 } 1547 1548 static void adm8211_stop(struct ieee80211_hw *dev) 1549 { 1550 struct adm8211_priv *priv = dev->priv; 1551 1552 priv->mode = NL80211_IFTYPE_UNSPECIFIED; 1553 priv->nar = 0; 1554 ADM8211_CSR_WRITE(NAR, 0); 1555 ADM8211_CSR_WRITE(IER, 0); 1556 ADM8211_CSR_READ(NAR); 1557 1558 free_irq(priv->pdev->irq, dev); 1559 1560 adm8211_free_rings(dev); 1561 } 1562 1563 static void adm8211_calc_durations(int *dur, int *plcp, size_t payload_len, int len, 1564 int plcp_signal, int short_preamble) 1565 { 1566 /* Alternative calculation from NetBSD: */ 1567 1568 /* IEEE 802.11b durations for DSSS PHY in microseconds */ 1569 #define IEEE80211_DUR_DS_LONG_PREAMBLE 144 1570 #define IEEE80211_DUR_DS_SHORT_PREAMBLE 72 1571 #define IEEE80211_DUR_DS_FAST_PLCPHDR 24 1572 #define IEEE80211_DUR_DS_SLOW_PLCPHDR 48 1573 #define IEEE80211_DUR_DS_SLOW_ACK 112 1574 #define IEEE80211_DUR_DS_FAST_ACK 56 1575 #define IEEE80211_DUR_DS_SLOW_CTS 112 1576 #define IEEE80211_DUR_DS_FAST_CTS 56 1577 #define IEEE80211_DUR_DS_SLOT 20 1578 #define IEEE80211_DUR_DS_SIFS 10 1579 1580 int remainder; 1581 1582 *dur = (80 * (24 + payload_len) + plcp_signal - 1) 1583 / plcp_signal; 1584 1585 if (plcp_signal <= PLCP_SIGNAL_2M) 1586 /* 1-2Mbps WLAN: send ACK/CTS at 1Mbps */ 1587 *dur += 3 * (IEEE80211_DUR_DS_SIFS + 1588 IEEE80211_DUR_DS_SHORT_PREAMBLE + 1589 IEEE80211_DUR_DS_FAST_PLCPHDR) + 1590 IEEE80211_DUR_DS_SLOW_CTS + IEEE80211_DUR_DS_SLOW_ACK; 1591 else 1592 /* 5-11Mbps WLAN: send ACK/CTS at 2Mbps */ 1593 *dur += 3 * (IEEE80211_DUR_DS_SIFS + 1594 IEEE80211_DUR_DS_SHORT_PREAMBLE + 1595 IEEE80211_DUR_DS_FAST_PLCPHDR) + 1596 IEEE80211_DUR_DS_FAST_CTS + IEEE80211_DUR_DS_FAST_ACK; 1597 1598 /* lengthen duration if long preamble */ 1599 if (!short_preamble) 1600 *dur += 3 * (IEEE80211_DUR_DS_LONG_PREAMBLE - 1601 IEEE80211_DUR_DS_SHORT_PREAMBLE) + 1602 3 * (IEEE80211_DUR_DS_SLOW_PLCPHDR - 1603 IEEE80211_DUR_DS_FAST_PLCPHDR); 1604 1605 1606 *plcp = (80 * len) / plcp_signal; 1607 remainder = (80 * len) % plcp_signal; 1608 if (plcp_signal == PLCP_SIGNAL_11M && 1609 remainder <= 30 && remainder > 0) 1610 *plcp = (*plcp | 0x8000) + 1; 1611 else if (remainder) 1612 (*plcp)++; 1613 } 1614 1615 /* Transmit skb w/adm8211_tx_hdr (802.11 header created by hardware) */ 1616 static void adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb, 1617 u16 plcp_signal, 1618 size_t hdrlen) 1619 { 1620 struct adm8211_priv *priv = dev->priv; 1621 unsigned long flags; 1622 dma_addr_t mapping; 1623 unsigned int entry; 1624 u32 flag; 1625 1626 mapping = pci_map_single(priv->pdev, skb->data, skb->len, 1627 PCI_DMA_TODEVICE); 1628 1629 spin_lock_irqsave(&priv->lock, flags); 1630 1631 if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size / 2) 1632 flag = TDES1_CONTROL_IC | TDES1_CONTROL_LS | TDES1_CONTROL_FS; 1633 else 1634 flag = TDES1_CONTROL_LS | TDES1_CONTROL_FS; 1635 1636 if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size - 2) 1637 ieee80211_stop_queue(dev, 0); 1638 1639 entry = priv->cur_tx % priv->tx_ring_size; 1640 1641 priv->tx_buffers[entry].skb = skb; 1642 priv->tx_buffers[entry].mapping = mapping; 1643 priv->tx_buffers[entry].hdrlen = hdrlen; 1644 priv->tx_ring[entry].buffer1 = cpu_to_le32(mapping); 1645 1646 if (entry == priv->tx_ring_size - 1) 1647 flag |= TDES1_CONTROL_TER; 1648 priv->tx_ring[entry].length = cpu_to_le32(flag | skb->len); 1649 1650 /* Set TX rate (SIGNAL field in PLCP PPDU format) */ 1651 flag = TDES0_CONTROL_OWN | (plcp_signal << 20) | 8 /* ? */; 1652 priv->tx_ring[entry].status = cpu_to_le32(flag); 1653 1654 priv->cur_tx++; 1655 1656 spin_unlock_irqrestore(&priv->lock, flags); 1657 1658 /* Trigger transmit poll */ 1659 ADM8211_CSR_WRITE(TDR, 0); 1660 } 1661 1662 /* Put adm8211_tx_hdr on skb and transmit */ 1663 static void adm8211_tx(struct ieee80211_hw *dev, 1664 struct ieee80211_tx_control *control, 1665 struct sk_buff *skb) 1666 { 1667 struct adm8211_tx_hdr *txhdr; 1668 size_t payload_len, hdrlen; 1669 int plcp, dur, len, plcp_signal, short_preamble; 1670 struct ieee80211_hdr *hdr; 1671 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 1672 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(dev, info); 1673 u8 rc_flags; 1674 1675 rc_flags = info->control.rates[0].flags; 1676 short_preamble = !!(rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE); 1677 plcp_signal = txrate->bitrate; 1678 1679 hdr = (struct ieee80211_hdr *)skb->data; 1680 hdrlen = ieee80211_hdrlen(hdr->frame_control); 1681 memcpy(skb->cb, skb->data, hdrlen); 1682 hdr = (struct ieee80211_hdr *)skb->cb; 1683 skb_pull(skb, hdrlen); 1684 payload_len = skb->len; 1685 1686 txhdr = (struct adm8211_tx_hdr *) skb_push(skb, sizeof(*txhdr)); 1687 memset(txhdr, 0, sizeof(*txhdr)); 1688 memcpy(txhdr->da, ieee80211_get_DA(hdr), ETH_ALEN); 1689 txhdr->signal = plcp_signal; 1690 txhdr->frame_body_size = cpu_to_le16(payload_len); 1691 txhdr->frame_control = hdr->frame_control; 1692 1693 len = hdrlen + payload_len + FCS_LEN; 1694 1695 txhdr->frag = cpu_to_le16(0x0FFF); 1696 adm8211_calc_durations(&dur, &plcp, payload_len, 1697 len, plcp_signal, short_preamble); 1698 txhdr->plcp_frag_head_len = cpu_to_le16(plcp); 1699 txhdr->plcp_frag_tail_len = cpu_to_le16(plcp); 1700 txhdr->dur_frag_head = cpu_to_le16(dur); 1701 txhdr->dur_frag_tail = cpu_to_le16(dur); 1702 1703 txhdr->header_control = cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_EXTEND_HEADER); 1704 1705 if (short_preamble) 1706 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_SHORT_PREAMBLE); 1707 1708 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) 1709 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS); 1710 1711 txhdr->retry_limit = info->control.rates[0].count; 1712 1713 adm8211_tx_raw(dev, skb, plcp_signal, hdrlen); 1714 } 1715 1716 static int adm8211_alloc_rings(struct ieee80211_hw *dev) 1717 { 1718 struct adm8211_priv *priv = dev->priv; 1719 unsigned int ring_size; 1720 1721 priv->rx_buffers = kmalloc(sizeof(*priv->rx_buffers) * priv->rx_ring_size + 1722 sizeof(*priv->tx_buffers) * priv->tx_ring_size, GFP_KERNEL); 1723 if (!priv->rx_buffers) 1724 return -ENOMEM; 1725 1726 priv->tx_buffers = (void *)priv->rx_buffers + 1727 sizeof(*priv->rx_buffers) * priv->rx_ring_size; 1728 1729 /* Allocate TX/RX descriptors */ 1730 ring_size = sizeof(struct adm8211_desc) * priv->rx_ring_size + 1731 sizeof(struct adm8211_desc) * priv->tx_ring_size; 1732 priv->rx_ring = pci_alloc_consistent(priv->pdev, ring_size, 1733 &priv->rx_ring_dma); 1734 1735 if (!priv->rx_ring) { 1736 kfree(priv->rx_buffers); 1737 priv->rx_buffers = NULL; 1738 priv->tx_buffers = NULL; 1739 return -ENOMEM; 1740 } 1741 1742 priv->tx_ring = priv->rx_ring + priv->rx_ring_size; 1743 priv->tx_ring_dma = priv->rx_ring_dma + 1744 sizeof(struct adm8211_desc) * priv->rx_ring_size; 1745 1746 return 0; 1747 } 1748 1749 static const struct ieee80211_ops adm8211_ops = { 1750 .tx = adm8211_tx, 1751 .start = adm8211_start, 1752 .stop = adm8211_stop, 1753 .add_interface = adm8211_add_interface, 1754 .remove_interface = adm8211_remove_interface, 1755 .config = adm8211_config, 1756 .bss_info_changed = adm8211_bss_info_changed, 1757 .prepare_multicast = adm8211_prepare_multicast, 1758 .configure_filter = adm8211_configure_filter, 1759 .get_stats = adm8211_get_stats, 1760 .get_tsf = adm8211_get_tsft 1761 }; 1762 1763 static int adm8211_probe(struct pci_dev *pdev, 1764 const struct pci_device_id *id) 1765 { 1766 struct ieee80211_hw *dev; 1767 struct adm8211_priv *priv; 1768 unsigned long mem_addr, mem_len; 1769 unsigned int io_addr, io_len; 1770 int err; 1771 u32 reg; 1772 u8 perm_addr[ETH_ALEN]; 1773 1774 err = pci_enable_device(pdev); 1775 if (err) { 1776 printk(KERN_ERR "%s (adm8211): Cannot enable new PCI device\n", 1777 pci_name(pdev)); 1778 return err; 1779 } 1780 1781 io_addr = pci_resource_start(pdev, 0); 1782 io_len = pci_resource_len(pdev, 0); 1783 mem_addr = pci_resource_start(pdev, 1); 1784 mem_len = pci_resource_len(pdev, 1); 1785 if (io_len < 256 || mem_len < 1024) { 1786 printk(KERN_ERR "%s (adm8211): Too short PCI resources\n", 1787 pci_name(pdev)); 1788 goto err_disable_pdev; 1789 } 1790 1791 1792 /* check signature */ 1793 pci_read_config_dword(pdev, 0x80 /* CR32 */, ®); 1794 if (reg != ADM8211_SIG1 && reg != ADM8211_SIG2) { 1795 printk(KERN_ERR "%s (adm8211): Invalid signature (0x%x)\n", 1796 pci_name(pdev), reg); 1797 goto err_disable_pdev; 1798 } 1799 1800 err = pci_request_regions(pdev, "adm8211"); 1801 if (err) { 1802 printk(KERN_ERR "%s (adm8211): Cannot obtain PCI resources\n", 1803 pci_name(pdev)); 1804 return err; /* someone else grabbed it? don't disable it */ 1805 } 1806 1807 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) || 1808 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) { 1809 printk(KERN_ERR "%s (adm8211): No suitable DMA available\n", 1810 pci_name(pdev)); 1811 goto err_free_reg; 1812 } 1813 1814 pci_set_master(pdev); 1815 1816 dev = ieee80211_alloc_hw(sizeof(*priv), &adm8211_ops); 1817 if (!dev) { 1818 printk(KERN_ERR "%s (adm8211): ieee80211 alloc failed\n", 1819 pci_name(pdev)); 1820 err = -ENOMEM; 1821 goto err_free_reg; 1822 } 1823 priv = dev->priv; 1824 priv->pdev = pdev; 1825 1826 spin_lock_init(&priv->lock); 1827 1828 SET_IEEE80211_DEV(dev, &pdev->dev); 1829 1830 pci_set_drvdata(pdev, dev); 1831 1832 priv->map = pci_iomap(pdev, 1, mem_len); 1833 if (!priv->map) 1834 priv->map = pci_iomap(pdev, 0, io_len); 1835 1836 if (!priv->map) { 1837 printk(KERN_ERR "%s (adm8211): Cannot map device memory\n", 1838 pci_name(pdev)); 1839 err = -ENOMEM; 1840 goto err_free_dev; 1841 } 1842 1843 priv->rx_ring_size = rx_ring_size; 1844 priv->tx_ring_size = tx_ring_size; 1845 1846 if (adm8211_alloc_rings(dev)) { 1847 printk(KERN_ERR "%s (adm8211): Cannot allocate TX/RX ring\n", 1848 pci_name(pdev)); 1849 goto err_iounmap; 1850 } 1851 1852 *(__le32 *)perm_addr = cpu_to_le32(ADM8211_CSR_READ(PAR0)); 1853 *(__le16 *)&perm_addr[4] = 1854 cpu_to_le16(ADM8211_CSR_READ(PAR1) & 0xFFFF); 1855 1856 if (!is_valid_ether_addr(perm_addr)) { 1857 printk(KERN_WARNING "%s (adm8211): Invalid hwaddr in EEPROM!\n", 1858 pci_name(pdev)); 1859 eth_random_addr(perm_addr); 1860 } 1861 SET_IEEE80211_PERM_ADDR(dev, perm_addr); 1862 1863 dev->extra_tx_headroom = sizeof(struct adm8211_tx_hdr); 1864 /* dev->flags = RX_INCLUDES_FCS in promisc mode */ 1865 ieee80211_hw_set(dev, SIGNAL_UNSPEC); 1866 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); 1867 1868 dev->max_signal = 100; /* FIXME: find better value */ 1869 1870 dev->queues = 1; /* ADM8211C supports more, maybe ADM8211B too */ 1871 1872 priv->retry_limit = 3; 1873 priv->ant_power = 0x40; 1874 priv->tx_power = 0x40; 1875 priv->lpf_cutoff = 0xFF; 1876 priv->lnags_threshold = 0xFF; 1877 priv->mode = NL80211_IFTYPE_UNSPECIFIED; 1878 1879 /* Power-on issue. EEPROM won't read correctly without */ 1880 if (pdev->revision >= ADM8211_REV_BA) { 1881 ADM8211_CSR_WRITE(FRCTL, 0); 1882 ADM8211_CSR_READ(FRCTL); 1883 ADM8211_CSR_WRITE(FRCTL, 1); 1884 ADM8211_CSR_READ(FRCTL); 1885 msleep(100); 1886 } 1887 1888 err = adm8211_read_eeprom(dev); 1889 if (err) { 1890 printk(KERN_ERR "%s (adm8211): Can't alloc eeprom buffer\n", 1891 pci_name(pdev)); 1892 goto err_free_desc; 1893 } 1894 1895 priv->channel = 1; 1896 1897 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band; 1898 1899 err = ieee80211_register_hw(dev); 1900 if (err) { 1901 printk(KERN_ERR "%s (adm8211): Cannot register device\n", 1902 pci_name(pdev)); 1903 goto err_free_eeprom; 1904 } 1905 1906 wiphy_info(dev->wiphy, "hwaddr %pM, Rev 0x%02x\n", 1907 dev->wiphy->perm_addr, pdev->revision); 1908 1909 return 0; 1910 1911 err_free_eeprom: 1912 kfree(priv->eeprom); 1913 1914 err_free_desc: 1915 pci_free_consistent(pdev, 1916 sizeof(struct adm8211_desc) * priv->rx_ring_size + 1917 sizeof(struct adm8211_desc) * priv->tx_ring_size, 1918 priv->rx_ring, priv->rx_ring_dma); 1919 kfree(priv->rx_buffers); 1920 1921 err_iounmap: 1922 pci_iounmap(pdev, priv->map); 1923 1924 err_free_dev: 1925 ieee80211_free_hw(dev); 1926 1927 err_free_reg: 1928 pci_release_regions(pdev); 1929 1930 err_disable_pdev: 1931 pci_disable_device(pdev); 1932 return err; 1933 } 1934 1935 1936 static void adm8211_remove(struct pci_dev *pdev) 1937 { 1938 struct ieee80211_hw *dev = pci_get_drvdata(pdev); 1939 struct adm8211_priv *priv; 1940 1941 if (!dev) 1942 return; 1943 1944 ieee80211_unregister_hw(dev); 1945 1946 priv = dev->priv; 1947 1948 pci_free_consistent(pdev, 1949 sizeof(struct adm8211_desc) * priv->rx_ring_size + 1950 sizeof(struct adm8211_desc) * priv->tx_ring_size, 1951 priv->rx_ring, priv->rx_ring_dma); 1952 1953 kfree(priv->rx_buffers); 1954 kfree(priv->eeprom); 1955 pci_iounmap(pdev, priv->map); 1956 pci_release_regions(pdev); 1957 pci_disable_device(pdev); 1958 ieee80211_free_hw(dev); 1959 } 1960 1961 1962 #ifdef CONFIG_PM 1963 static int adm8211_suspend(struct pci_dev *pdev, pm_message_t state) 1964 { 1965 pci_save_state(pdev); 1966 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 1967 return 0; 1968 } 1969 1970 static int adm8211_resume(struct pci_dev *pdev) 1971 { 1972 pci_set_power_state(pdev, PCI_D0); 1973 pci_restore_state(pdev); 1974 return 0; 1975 } 1976 #endif /* CONFIG_PM */ 1977 1978 1979 MODULE_DEVICE_TABLE(pci, adm8211_pci_id_table); 1980 1981 /* TODO: implement enable_wake */ 1982 static struct pci_driver adm8211_driver = { 1983 .name = "adm8211", 1984 .id_table = adm8211_pci_id_table, 1985 .probe = adm8211_probe, 1986 .remove = adm8211_remove, 1987 #ifdef CONFIG_PM 1988 .suspend = adm8211_suspend, 1989 .resume = adm8211_resume, 1990 #endif /* CONFIG_PM */ 1991 }; 1992 1993 module_pci_driver(adm8211_driver); 1994