1 // SPDX-License-Identifier: GPL-2.0-only 2 3 /* 4 * Linux device driver for ADMtek ADM8211 (IEEE 802.11b MAC/BBP) 5 * 6 * Copyright (c) 2003, Jouni Malinen <j@w1.fi> 7 * Copyright (c) 2004-2007, Michael Wu <flamingice@sourmilk.net> 8 * Some parts copyright (c) 2003 by David Young <dyoung@pobox.com> 9 * and used with permission. 10 * 11 * Much thanks to Infineon-ADMtek for their support of this driver. 12 */ 13 14 #include <linux/interrupt.h> 15 #include <linux/if.h> 16 #include <linux/skbuff.h> 17 #include <linux/slab.h> 18 #include <linux/etherdevice.h> 19 #include <linux/pci.h> 20 #include <linux/delay.h> 21 #include <linux/crc32.h> 22 #include <linux/eeprom_93cx6.h> 23 #include <linux/module.h> 24 #include <net/mac80211.h> 25 26 #include "adm8211.h" 27 28 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>"); 29 MODULE_AUTHOR("Jouni Malinen <j@w1.fi>"); 30 MODULE_DESCRIPTION("Driver for IEEE 802.11b wireless cards based on ADMtek ADM8211"); 31 MODULE_LICENSE("GPL"); 32 33 static unsigned int tx_ring_size __read_mostly = 16; 34 static unsigned int rx_ring_size __read_mostly = 16; 35 36 module_param(tx_ring_size, uint, 0); 37 module_param(rx_ring_size, uint, 0); 38 39 static const struct pci_device_id adm8211_pci_id_table[] = { 40 /* ADMtek ADM8211 */ 41 { PCI_DEVICE(0x10B7, 0x6000) }, /* 3Com 3CRSHPW796 */ 42 { PCI_DEVICE(0x1200, 0x8201) }, /* ? */ 43 { PCI_DEVICE(0x1317, 0x8201) }, /* ADM8211A */ 44 { PCI_DEVICE(0x1317, 0x8211) }, /* ADM8211B/C */ 45 { 0 } 46 }; 47 48 static struct ieee80211_rate adm8211_rates[] = { 49 { .bitrate = 10, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 50 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 51 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 52 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 53 { .bitrate = 220, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, /* XX ?? */ 54 }; 55 56 static const struct ieee80211_channel adm8211_channels[] = { 57 { .center_freq = 2412}, 58 { .center_freq = 2417}, 59 { .center_freq = 2422}, 60 { .center_freq = 2427}, 61 { .center_freq = 2432}, 62 { .center_freq = 2437}, 63 { .center_freq = 2442}, 64 { .center_freq = 2447}, 65 { .center_freq = 2452}, 66 { .center_freq = 2457}, 67 { .center_freq = 2462}, 68 { .center_freq = 2467}, 69 { .center_freq = 2472}, 70 { .center_freq = 2484}, 71 }; 72 73 74 static void adm8211_eeprom_register_read(struct eeprom_93cx6 *eeprom) 75 { 76 struct adm8211_priv *priv = eeprom->data; 77 u32 reg = ADM8211_CSR_READ(SPR); 78 79 eeprom->reg_data_in = reg & ADM8211_SPR_SDI; 80 eeprom->reg_data_out = reg & ADM8211_SPR_SDO; 81 eeprom->reg_data_clock = reg & ADM8211_SPR_SCLK; 82 eeprom->reg_chip_select = reg & ADM8211_SPR_SCS; 83 } 84 85 static void adm8211_eeprom_register_write(struct eeprom_93cx6 *eeprom) 86 { 87 struct adm8211_priv *priv = eeprom->data; 88 u32 reg = 0x4000 | ADM8211_SPR_SRS; 89 90 if (eeprom->reg_data_in) 91 reg |= ADM8211_SPR_SDI; 92 if (eeprom->reg_data_out) 93 reg |= ADM8211_SPR_SDO; 94 if (eeprom->reg_data_clock) 95 reg |= ADM8211_SPR_SCLK; 96 if (eeprom->reg_chip_select) 97 reg |= ADM8211_SPR_SCS; 98 99 ADM8211_CSR_WRITE(SPR, reg); 100 ADM8211_CSR_READ(SPR); /* eeprom_delay */ 101 } 102 103 static int adm8211_read_eeprom(struct ieee80211_hw *dev) 104 { 105 struct adm8211_priv *priv = dev->priv; 106 unsigned int words, i; 107 struct ieee80211_chan_range chan_range; 108 u16 cr49; 109 struct eeprom_93cx6 eeprom = { 110 .data = priv, 111 .register_read = adm8211_eeprom_register_read, 112 .register_write = adm8211_eeprom_register_write 113 }; 114 115 if (ADM8211_CSR_READ(CSR_TEST0) & ADM8211_CSR_TEST0_EPTYP) { 116 /* 256 * 16-bit = 512 bytes */ 117 eeprom.width = PCI_EEPROM_WIDTH_93C66; 118 words = 256; 119 } else { 120 /* 64 * 16-bit = 128 bytes */ 121 eeprom.width = PCI_EEPROM_WIDTH_93C46; 122 words = 64; 123 } 124 125 priv->eeprom_len = words * 2; 126 priv->eeprom = kmalloc(priv->eeprom_len, GFP_KERNEL); 127 if (!priv->eeprom) 128 return -ENOMEM; 129 130 eeprom_93cx6_multiread(&eeprom, 0, (__le16 *)priv->eeprom, words); 131 132 cr49 = le16_to_cpu(priv->eeprom->cr49); 133 priv->rf_type = (cr49 >> 3) & 0x7; 134 switch (priv->rf_type) { 135 case ADM8211_TYPE_INTERSIL: 136 case ADM8211_TYPE_RFMD: 137 case ADM8211_TYPE_MARVEL: 138 case ADM8211_TYPE_AIROHA: 139 case ADM8211_TYPE_ADMTEK: 140 break; 141 142 default: 143 if (priv->pdev->revision < ADM8211_REV_CA) 144 priv->rf_type = ADM8211_TYPE_RFMD; 145 else 146 priv->rf_type = ADM8211_TYPE_AIROHA; 147 148 printk(KERN_WARNING "%s (adm8211): Unknown RFtype %d\n", 149 pci_name(priv->pdev), (cr49 >> 3) & 0x7); 150 } 151 152 priv->bbp_type = cr49 & 0x7; 153 switch (priv->bbp_type) { 154 case ADM8211_TYPE_INTERSIL: 155 case ADM8211_TYPE_RFMD: 156 case ADM8211_TYPE_MARVEL: 157 case ADM8211_TYPE_AIROHA: 158 case ADM8211_TYPE_ADMTEK: 159 break; 160 default: 161 if (priv->pdev->revision < ADM8211_REV_CA) 162 priv->bbp_type = ADM8211_TYPE_RFMD; 163 else 164 priv->bbp_type = ADM8211_TYPE_ADMTEK; 165 166 printk(KERN_WARNING "%s (adm8211): Unknown BBPtype: %d\n", 167 pci_name(priv->pdev), cr49 >> 3); 168 } 169 170 if (priv->eeprom->country_code >= ARRAY_SIZE(cranges)) { 171 printk(KERN_WARNING "%s (adm8211): Invalid country code (%d)\n", 172 pci_name(priv->pdev), priv->eeprom->country_code); 173 174 chan_range = cranges[2]; 175 } else 176 chan_range = cranges[priv->eeprom->country_code]; 177 178 printk(KERN_DEBUG "%s (adm8211): Channel range: %d - %d\n", 179 pci_name(priv->pdev), (int)chan_range.min, (int)chan_range.max); 180 181 BUILD_BUG_ON(sizeof(priv->channels) != sizeof(adm8211_channels)); 182 183 memcpy(priv->channels, adm8211_channels, sizeof(priv->channels)); 184 priv->band.channels = priv->channels; 185 priv->band.n_channels = ARRAY_SIZE(adm8211_channels); 186 priv->band.bitrates = adm8211_rates; 187 priv->band.n_bitrates = ARRAY_SIZE(adm8211_rates); 188 189 for (i = 1; i <= ARRAY_SIZE(adm8211_channels); i++) 190 if (i < chan_range.min || i > chan_range.max) 191 priv->channels[i - 1].flags |= IEEE80211_CHAN_DISABLED; 192 193 switch (priv->eeprom->specific_bbptype) { 194 case ADM8211_BBP_RFMD3000: 195 case ADM8211_BBP_RFMD3002: 196 case ADM8211_BBP_ADM8011: 197 priv->specific_bbptype = priv->eeprom->specific_bbptype; 198 break; 199 200 default: 201 if (priv->pdev->revision < ADM8211_REV_CA) 202 priv->specific_bbptype = ADM8211_BBP_RFMD3000; 203 else 204 priv->specific_bbptype = ADM8211_BBP_ADM8011; 205 206 printk(KERN_WARNING "%s (adm8211): Unknown specific BBP: %d\n", 207 pci_name(priv->pdev), priv->eeprom->specific_bbptype); 208 } 209 210 switch (priv->eeprom->specific_rftype) { 211 case ADM8211_RFMD2948: 212 case ADM8211_RFMD2958: 213 case ADM8211_RFMD2958_RF3000_CONTROL_POWER: 214 case ADM8211_MAX2820: 215 case ADM8211_AL2210L: 216 priv->transceiver_type = priv->eeprom->specific_rftype; 217 break; 218 219 default: 220 if (priv->pdev->revision == ADM8211_REV_BA) 221 priv->transceiver_type = ADM8211_RFMD2958_RF3000_CONTROL_POWER; 222 else if (priv->pdev->revision == ADM8211_REV_CA) 223 priv->transceiver_type = ADM8211_AL2210L; 224 else if (priv->pdev->revision == ADM8211_REV_AB) 225 priv->transceiver_type = ADM8211_RFMD2948; 226 227 printk(KERN_WARNING "%s (adm8211): Unknown transceiver: %d\n", 228 pci_name(priv->pdev), priv->eeprom->specific_rftype); 229 230 break; 231 } 232 233 printk(KERN_DEBUG "%s (adm8211): RFtype=%d BBPtype=%d Specific BBP=%d " 234 "Transceiver=%d\n", pci_name(priv->pdev), priv->rf_type, 235 priv->bbp_type, priv->specific_bbptype, priv->transceiver_type); 236 237 return 0; 238 } 239 240 static inline void adm8211_write_sram(struct ieee80211_hw *dev, 241 u32 addr, u32 data) 242 { 243 struct adm8211_priv *priv = dev->priv; 244 245 ADM8211_CSR_WRITE(WEPCTL, addr | ADM8211_WEPCTL_TABLE_WR | 246 (priv->pdev->revision < ADM8211_REV_BA ? 247 0 : ADM8211_WEPCTL_SEL_WEPTABLE )); 248 ADM8211_CSR_READ(WEPCTL); 249 msleep(1); 250 251 ADM8211_CSR_WRITE(WESK, data); 252 ADM8211_CSR_READ(WESK); 253 msleep(1); 254 } 255 256 static void adm8211_write_sram_bytes(struct ieee80211_hw *dev, 257 unsigned int addr, u8 *buf, 258 unsigned int len) 259 { 260 struct adm8211_priv *priv = dev->priv; 261 u32 reg = ADM8211_CSR_READ(WEPCTL); 262 unsigned int i; 263 264 if (priv->pdev->revision < ADM8211_REV_BA) { 265 for (i = 0; i < len; i += 2) { 266 u16 val = buf[i] | (buf[i + 1] << 8); 267 adm8211_write_sram(dev, addr + i / 2, val); 268 } 269 } else { 270 for (i = 0; i < len; i += 4) { 271 u32 val = (buf[i + 0] << 0 ) | (buf[i + 1] << 8 ) | 272 (buf[i + 2] << 16) | (buf[i + 3] << 24); 273 adm8211_write_sram(dev, addr + i / 4, val); 274 } 275 } 276 277 ADM8211_CSR_WRITE(WEPCTL, reg); 278 } 279 280 static void adm8211_clear_sram(struct ieee80211_hw *dev) 281 { 282 struct adm8211_priv *priv = dev->priv; 283 u32 reg = ADM8211_CSR_READ(WEPCTL); 284 unsigned int addr; 285 286 for (addr = 0; addr < ADM8211_SRAM_SIZE; addr++) 287 adm8211_write_sram(dev, addr, 0); 288 289 ADM8211_CSR_WRITE(WEPCTL, reg); 290 } 291 292 static int adm8211_get_stats(struct ieee80211_hw *dev, 293 struct ieee80211_low_level_stats *stats) 294 { 295 struct adm8211_priv *priv = dev->priv; 296 297 memcpy(stats, &priv->stats, sizeof(*stats)); 298 299 return 0; 300 } 301 302 static void adm8211_interrupt_tci(struct ieee80211_hw *dev) 303 { 304 struct adm8211_priv *priv = dev->priv; 305 unsigned int dirty_tx; 306 307 spin_lock(&priv->lock); 308 309 for (dirty_tx = priv->dirty_tx; priv->cur_tx - dirty_tx; dirty_tx++) { 310 unsigned int entry = dirty_tx % priv->tx_ring_size; 311 u32 status = le32_to_cpu(priv->tx_ring[entry].status); 312 struct ieee80211_tx_info *txi; 313 struct adm8211_tx_ring_info *info; 314 struct sk_buff *skb; 315 316 if (status & TDES0_CONTROL_OWN || 317 !(status & TDES0_CONTROL_DONE)) 318 break; 319 320 info = &priv->tx_buffers[entry]; 321 skb = info->skb; 322 txi = IEEE80211_SKB_CB(skb); 323 324 /* TODO: check TDES0_STATUS_TUF and TDES0_STATUS_TRO */ 325 326 dma_unmap_single(&priv->pdev->dev, info->mapping, 327 info->skb->len, DMA_TO_DEVICE); 328 329 ieee80211_tx_info_clear_status(txi); 330 331 skb_pull(skb, sizeof(struct adm8211_tx_hdr)); 332 memcpy(skb_push(skb, info->hdrlen), skb->cb, info->hdrlen); 333 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && 334 !(status & TDES0_STATUS_ES)) 335 txi->flags |= IEEE80211_TX_STAT_ACK; 336 337 ieee80211_tx_status_irqsafe(dev, skb); 338 339 info->skb = NULL; 340 } 341 342 if (priv->cur_tx - dirty_tx < priv->tx_ring_size - 2) 343 ieee80211_wake_queue(dev, 0); 344 345 priv->dirty_tx = dirty_tx; 346 spin_unlock(&priv->lock); 347 } 348 349 350 static void adm8211_interrupt_rci(struct ieee80211_hw *dev) 351 { 352 struct adm8211_priv *priv = dev->priv; 353 unsigned int entry = priv->cur_rx % priv->rx_ring_size; 354 u32 status; 355 unsigned int pktlen; 356 struct sk_buff *skb, *newskb; 357 unsigned int limit = priv->rx_ring_size; 358 u8 rssi, rate; 359 360 while (!(priv->rx_ring[entry].status & cpu_to_le32(RDES0_STATUS_OWN))) { 361 if (!limit--) 362 break; 363 364 status = le32_to_cpu(priv->rx_ring[entry].status); 365 rate = (status & RDES0_STATUS_RXDR) >> 12; 366 rssi = le32_to_cpu(priv->rx_ring[entry].length) & 367 RDES1_STATUS_RSSI; 368 369 pktlen = status & RDES0_STATUS_FL; 370 if (pktlen > RX_PKT_SIZE) { 371 if (net_ratelimit()) 372 wiphy_debug(dev->wiphy, "frame too long (%d)\n", 373 pktlen); 374 pktlen = RX_PKT_SIZE; 375 } 376 377 if (!priv->soft_rx_crc && status & RDES0_STATUS_ES) { 378 skb = NULL; /* old buffer will be reused */ 379 /* TODO: update RX error stats */ 380 /* TODO: check RDES0_STATUS_CRC*E */ 381 } else if (pktlen < RX_COPY_BREAK) { 382 skb = dev_alloc_skb(pktlen); 383 if (skb) { 384 dma_sync_single_for_cpu(&priv->pdev->dev, 385 priv->rx_buffers[entry].mapping, 386 pktlen, 387 DMA_FROM_DEVICE); 388 skb_put_data(skb, 389 skb_tail_pointer(priv->rx_buffers[entry].skb), 390 pktlen); 391 dma_sync_single_for_device(&priv->pdev->dev, 392 priv->rx_buffers[entry].mapping, 393 RX_PKT_SIZE, 394 DMA_FROM_DEVICE); 395 } 396 } else { 397 newskb = dev_alloc_skb(RX_PKT_SIZE); 398 if (newskb) { 399 skb = priv->rx_buffers[entry].skb; 400 skb_put(skb, pktlen); 401 dma_unmap_single(&priv->pdev->dev, 402 priv->rx_buffers[entry].mapping, 403 RX_PKT_SIZE, DMA_FROM_DEVICE); 404 priv->rx_buffers[entry].skb = newskb; 405 priv->rx_buffers[entry].mapping = 406 dma_map_single(&priv->pdev->dev, 407 skb_tail_pointer(newskb), 408 RX_PKT_SIZE, 409 DMA_FROM_DEVICE); 410 if (dma_mapping_error(&priv->pdev->dev, 411 priv->rx_buffers[entry].mapping)) { 412 priv->rx_buffers[entry].skb = NULL; 413 dev_kfree_skb(newskb); 414 skb = NULL; 415 /* TODO: update rx dropped stats */ 416 } 417 } else { 418 skb = NULL; 419 /* TODO: update rx dropped stats */ 420 } 421 422 priv->rx_ring[entry].buffer1 = 423 cpu_to_le32(priv->rx_buffers[entry].mapping); 424 } 425 426 priv->rx_ring[entry].status = cpu_to_le32(RDES0_STATUS_OWN | 427 RDES0_STATUS_SQL); 428 priv->rx_ring[entry].length = 429 cpu_to_le32(RX_PKT_SIZE | 430 (entry == priv->rx_ring_size - 1 ? 431 RDES1_CONTROL_RER : 0)); 432 433 if (skb) { 434 struct ieee80211_rx_status rx_status = {0}; 435 436 if (priv->pdev->revision < ADM8211_REV_CA) 437 rx_status.signal = rssi; 438 else 439 rx_status.signal = 100 - rssi; 440 441 rx_status.rate_idx = rate; 442 443 rx_status.freq = adm8211_channels[priv->channel - 1].center_freq; 444 rx_status.band = NL80211_BAND_2GHZ; 445 446 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status)); 447 ieee80211_rx_irqsafe(dev, skb); 448 } 449 450 entry = (++priv->cur_rx) % priv->rx_ring_size; 451 } 452 453 /* TODO: check LPC and update stats? */ 454 } 455 456 457 static irqreturn_t adm8211_interrupt(int irq, void *dev_id) 458 { 459 #define ADM8211_INT(x) \ 460 do { \ 461 if (unlikely(stsr & ADM8211_STSR_ ## x)) \ 462 wiphy_debug(dev->wiphy, "%s\n", #x); \ 463 } while (0) 464 465 struct ieee80211_hw *dev = dev_id; 466 struct adm8211_priv *priv = dev->priv; 467 u32 stsr = ADM8211_CSR_READ(STSR); 468 ADM8211_CSR_WRITE(STSR, stsr); 469 if (stsr == 0xffffffff) 470 return IRQ_HANDLED; 471 472 if (!(stsr & (ADM8211_STSR_NISS | ADM8211_STSR_AISS))) 473 return IRQ_HANDLED; 474 475 if (stsr & ADM8211_STSR_RCI) 476 adm8211_interrupt_rci(dev); 477 if (stsr & ADM8211_STSR_TCI) 478 adm8211_interrupt_tci(dev); 479 480 ADM8211_INT(PCF); 481 ADM8211_INT(BCNTC); 482 ADM8211_INT(GPINT); 483 ADM8211_INT(ATIMTC); 484 ADM8211_INT(TSFTF); 485 ADM8211_INT(TSCZ); 486 ADM8211_INT(SQL); 487 ADM8211_INT(WEPTD); 488 ADM8211_INT(ATIME); 489 ADM8211_INT(TEIS); 490 ADM8211_INT(FBE); 491 ADM8211_INT(REIS); 492 ADM8211_INT(GPTT); 493 ADM8211_INT(RPS); 494 ADM8211_INT(RDU); 495 ADM8211_INT(TUF); 496 ADM8211_INT(TPS); 497 498 return IRQ_HANDLED; 499 500 #undef ADM8211_INT 501 } 502 503 #define WRITE_SYN(name,v_mask,v_shift,a_mask,a_shift,bits,prewrite,postwrite)\ 504 static void adm8211_rf_write_syn_ ## name (struct ieee80211_hw *dev, \ 505 u16 addr, u32 value) { \ 506 struct adm8211_priv *priv = dev->priv; \ 507 unsigned int i; \ 508 u32 reg, bitbuf; \ 509 \ 510 value &= v_mask; \ 511 addr &= a_mask; \ 512 bitbuf = (value << v_shift) | (addr << a_shift); \ 513 \ 514 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_1); \ 515 ADM8211_CSR_READ(SYNRF); \ 516 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_0); \ 517 ADM8211_CSR_READ(SYNRF); \ 518 \ 519 if (prewrite) { \ 520 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_WRITE_SYNDATA_0); \ 521 ADM8211_CSR_READ(SYNRF); \ 522 } \ 523 \ 524 for (i = 0; i <= bits; i++) { \ 525 if (bitbuf & (1 << (bits - i))) \ 526 reg = ADM8211_SYNRF_WRITE_SYNDATA_1; \ 527 else \ 528 reg = ADM8211_SYNRF_WRITE_SYNDATA_0; \ 529 \ 530 ADM8211_CSR_WRITE(SYNRF, reg); \ 531 ADM8211_CSR_READ(SYNRF); \ 532 \ 533 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_1); \ 534 ADM8211_CSR_READ(SYNRF); \ 535 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_0); \ 536 ADM8211_CSR_READ(SYNRF); \ 537 } \ 538 \ 539 if (postwrite == 1) { \ 540 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_0); \ 541 ADM8211_CSR_READ(SYNRF); \ 542 } \ 543 if (postwrite == 2) { \ 544 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_1); \ 545 ADM8211_CSR_READ(SYNRF); \ 546 } \ 547 \ 548 ADM8211_CSR_WRITE(SYNRF, 0); \ 549 ADM8211_CSR_READ(SYNRF); \ 550 } 551 552 WRITE_SYN(max2820, 0x00FFF, 0, 0x0F, 12, 15, 1, 1) 553 WRITE_SYN(al2210l, 0xFFFFF, 4, 0x0F, 0, 23, 1, 1) 554 WRITE_SYN(rfmd2958, 0x3FFFF, 0, 0x1F, 18, 23, 0, 1) 555 WRITE_SYN(rfmd2948, 0x0FFFF, 4, 0x0F, 0, 21, 0, 2) 556 557 #undef WRITE_SYN 558 559 static int adm8211_write_bbp(struct ieee80211_hw *dev, u8 addr, u8 data) 560 { 561 struct adm8211_priv *priv = dev->priv; 562 unsigned int timeout; 563 u32 reg; 564 565 timeout = 10; 566 while (timeout > 0) { 567 reg = ADM8211_CSR_READ(BBPCTL); 568 if (!(reg & (ADM8211_BBPCTL_WR | ADM8211_BBPCTL_RD))) 569 break; 570 timeout--; 571 msleep(2); 572 } 573 574 if (timeout == 0) { 575 wiphy_debug(dev->wiphy, 576 "adm8211_write_bbp(%d,%d) failed prewrite (reg=0x%08x)\n", 577 addr, data, reg); 578 return -ETIMEDOUT; 579 } 580 581 switch (priv->bbp_type) { 582 case ADM8211_TYPE_INTERSIL: 583 reg = ADM8211_BBPCTL_MMISEL; /* three wire interface */ 584 break; 585 case ADM8211_TYPE_RFMD: 586 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP | 587 (0x01 << 18); 588 break; 589 case ADM8211_TYPE_ADMTEK: 590 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP | 591 (0x05 << 18); 592 break; 593 } 594 reg |= ADM8211_BBPCTL_WR | (addr << 8) | data; 595 596 ADM8211_CSR_WRITE(BBPCTL, reg); 597 598 timeout = 10; 599 while (timeout > 0) { 600 reg = ADM8211_CSR_READ(BBPCTL); 601 if (!(reg & ADM8211_BBPCTL_WR)) 602 break; 603 timeout--; 604 msleep(2); 605 } 606 607 if (timeout == 0) { 608 ADM8211_CSR_WRITE(BBPCTL, ADM8211_CSR_READ(BBPCTL) & 609 ~ADM8211_BBPCTL_WR); 610 wiphy_debug(dev->wiphy, 611 "adm8211_write_bbp(%d,%d) failed postwrite (reg=0x%08x)\n", 612 addr, data, reg); 613 return -ETIMEDOUT; 614 } 615 616 return 0; 617 } 618 619 static int adm8211_rf_set_channel(struct ieee80211_hw *dev, unsigned int chan) 620 { 621 static const u32 adm8211_rfmd2958_reg5[] = 622 {0x22BD, 0x22D2, 0x22E8, 0x22FE, 0x2314, 0x232A, 0x2340, 623 0x2355, 0x236B, 0x2381, 0x2397, 0x23AD, 0x23C2, 0x23F7}; 624 static const u32 adm8211_rfmd2958_reg6[] = 625 {0x05D17, 0x3A2E8, 0x2E8BA, 0x22E8B, 0x1745D, 0x0BA2E, 0x00000, 626 0x345D1, 0x28BA2, 0x1D174, 0x11745, 0x05D17, 0x3A2E8, 0x11745}; 627 628 struct adm8211_priv *priv = dev->priv; 629 u8 ant_power = priv->ant_power > 0x3F ? 630 priv->eeprom->antenna_power[chan - 1] : priv->ant_power; 631 u8 tx_power = priv->tx_power > 0x3F ? 632 priv->eeprom->tx_power[chan - 1] : priv->tx_power; 633 u8 lpf_cutoff = priv->lpf_cutoff == 0xFF ? 634 priv->eeprom->lpf_cutoff[chan - 1] : priv->lpf_cutoff; 635 u8 lnags_thresh = priv->lnags_threshold == 0xFF ? 636 priv->eeprom->lnags_threshold[chan - 1] : priv->lnags_threshold; 637 u32 reg; 638 639 ADM8211_IDLE(); 640 641 /* Program synthesizer to new channel */ 642 switch (priv->transceiver_type) { 643 case ADM8211_RFMD2958: 644 case ADM8211_RFMD2958_RF3000_CONTROL_POWER: 645 adm8211_rf_write_syn_rfmd2958(dev, 0x00, 0x04007); 646 adm8211_rf_write_syn_rfmd2958(dev, 0x02, 0x00033); 647 648 adm8211_rf_write_syn_rfmd2958(dev, 0x05, 649 adm8211_rfmd2958_reg5[chan - 1]); 650 adm8211_rf_write_syn_rfmd2958(dev, 0x06, 651 adm8211_rfmd2958_reg6[chan - 1]); 652 break; 653 654 case ADM8211_RFMD2948: 655 adm8211_rf_write_syn_rfmd2948(dev, SI4126_MAIN_CONF, 656 SI4126_MAIN_XINDIV2); 657 adm8211_rf_write_syn_rfmd2948(dev, SI4126_POWERDOWN, 658 SI4126_POWERDOWN_PDIB | 659 SI4126_POWERDOWN_PDRB); 660 adm8211_rf_write_syn_rfmd2948(dev, SI4126_PHASE_DET_GAIN, 0); 661 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_N_DIV, 662 (chan == 14 ? 663 2110 : (2033 + (chan * 5)))); 664 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_N_DIV, 1496); 665 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_R_DIV, 44); 666 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_R_DIV, 44); 667 break; 668 669 case ADM8211_MAX2820: 670 adm8211_rf_write_syn_max2820(dev, 0x3, 671 (chan == 14 ? 0x054 : (0x7 + (chan * 5)))); 672 break; 673 674 case ADM8211_AL2210L: 675 adm8211_rf_write_syn_al2210l(dev, 0x0, 676 (chan == 14 ? 0x229B4 : (0x22967 + (chan * 5)))); 677 break; 678 679 default: 680 wiphy_debug(dev->wiphy, "unsupported transceiver type %d\n", 681 priv->transceiver_type); 682 break; 683 } 684 685 /* write BBP regs */ 686 if (priv->bbp_type == ADM8211_TYPE_RFMD) { 687 688 /* SMC 2635W specific? adm8211b doesn't use the 2948 though.. */ 689 /* TODO: remove if SMC 2635W doesn't need this */ 690 if (priv->transceiver_type == ADM8211_RFMD2948) { 691 reg = ADM8211_CSR_READ(GPIO); 692 reg &= 0xfffc0000; 693 reg |= ADM8211_CSR_GPIO_EN0; 694 if (chan != 14) 695 reg |= ADM8211_CSR_GPIO_O0; 696 ADM8211_CSR_WRITE(GPIO, reg); 697 } 698 699 if (priv->transceiver_type == ADM8211_RFMD2958) { 700 /* set PCNT2 */ 701 adm8211_rf_write_syn_rfmd2958(dev, 0x0B, 0x07100); 702 /* set PCNT1 P_DESIRED/MID_BIAS */ 703 reg = le16_to_cpu(priv->eeprom->cr49); 704 reg >>= 13; 705 reg <<= 15; 706 reg |= ant_power << 9; 707 adm8211_rf_write_syn_rfmd2958(dev, 0x0A, reg); 708 /* set TXRX TX_GAIN */ 709 adm8211_rf_write_syn_rfmd2958(dev, 0x09, 0x00050 | 710 (priv->pdev->revision < ADM8211_REV_CA ? tx_power : 0)); 711 } else { 712 reg = ADM8211_CSR_READ(PLCPHD); 713 reg &= 0xff00ffff; 714 reg |= tx_power << 18; 715 ADM8211_CSR_WRITE(PLCPHD, reg); 716 } 717 718 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF | 719 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST); 720 ADM8211_CSR_READ(SYNRF); 721 msleep(30); 722 723 /* RF3000 BBP */ 724 if (priv->transceiver_type != ADM8211_RFMD2958) 725 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT, 726 tx_power<<2); 727 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, lpf_cutoff); 728 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, lnags_thresh); 729 adm8211_write_bbp(dev, 0x1c, priv->pdev->revision == ADM8211_REV_BA ? 730 priv->eeprom->cr28 : 0); 731 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29); 732 733 ADM8211_CSR_WRITE(SYNRF, 0); 734 735 /* Nothing to do for ADMtek BBP */ 736 } else if (priv->bbp_type != ADM8211_TYPE_ADMTEK) 737 wiphy_debug(dev->wiphy, "unsupported BBP type %d\n", 738 priv->bbp_type); 739 740 ADM8211_RESTORE(); 741 742 /* update current channel for adhoc (and maybe AP mode) */ 743 reg = ADM8211_CSR_READ(CAP0); 744 reg &= ~0xF; 745 reg |= chan; 746 ADM8211_CSR_WRITE(CAP0, reg); 747 748 return 0; 749 } 750 751 static void adm8211_update_mode(struct ieee80211_hw *dev) 752 { 753 struct adm8211_priv *priv = dev->priv; 754 755 ADM8211_IDLE(); 756 757 priv->soft_rx_crc = 0; 758 switch (priv->mode) { 759 case NL80211_IFTYPE_STATION: 760 priv->nar &= ~(ADM8211_NAR_PR | ADM8211_NAR_EA); 761 priv->nar |= ADM8211_NAR_ST | ADM8211_NAR_SR; 762 break; 763 case NL80211_IFTYPE_ADHOC: 764 priv->nar &= ~ADM8211_NAR_PR; 765 priv->nar |= ADM8211_NAR_EA | ADM8211_NAR_ST | ADM8211_NAR_SR; 766 767 /* don't trust the error bits on rev 0x20 and up in adhoc */ 768 if (priv->pdev->revision >= ADM8211_REV_BA) 769 priv->soft_rx_crc = 1; 770 break; 771 case NL80211_IFTYPE_MONITOR: 772 priv->nar &= ~(ADM8211_NAR_EA | ADM8211_NAR_ST); 773 priv->nar |= ADM8211_NAR_PR | ADM8211_NAR_SR; 774 break; 775 } 776 777 ADM8211_RESTORE(); 778 } 779 780 static void adm8211_hw_init_syn(struct ieee80211_hw *dev) 781 { 782 struct adm8211_priv *priv = dev->priv; 783 784 switch (priv->transceiver_type) { 785 case ADM8211_RFMD2958: 786 case ADM8211_RFMD2958_RF3000_CONTROL_POWER: 787 /* comments taken from ADMtek vendor driver */ 788 789 /* Reset RF2958 after power on */ 790 adm8211_rf_write_syn_rfmd2958(dev, 0x1F, 0x00000); 791 /* Initialize RF VCO Core Bias to maximum */ 792 adm8211_rf_write_syn_rfmd2958(dev, 0x0C, 0x3001F); 793 /* Initialize IF PLL */ 794 adm8211_rf_write_syn_rfmd2958(dev, 0x01, 0x29C03); 795 /* Initialize IF PLL Coarse Tuning */ 796 adm8211_rf_write_syn_rfmd2958(dev, 0x03, 0x1FF6F); 797 /* Initialize RF PLL */ 798 adm8211_rf_write_syn_rfmd2958(dev, 0x04, 0x29403); 799 /* Initialize RF PLL Coarse Tuning */ 800 adm8211_rf_write_syn_rfmd2958(dev, 0x07, 0x1456F); 801 /* Initialize TX gain and filter BW (R9) */ 802 adm8211_rf_write_syn_rfmd2958(dev, 0x09, 803 (priv->transceiver_type == ADM8211_RFMD2958 ? 804 0x10050 : 0x00050)); 805 /* Initialize CAL register */ 806 adm8211_rf_write_syn_rfmd2958(dev, 0x08, 0x3FFF8); 807 break; 808 809 case ADM8211_MAX2820: 810 adm8211_rf_write_syn_max2820(dev, 0x1, 0x01E); 811 adm8211_rf_write_syn_max2820(dev, 0x2, 0x001); 812 adm8211_rf_write_syn_max2820(dev, 0x3, 0x054); 813 adm8211_rf_write_syn_max2820(dev, 0x4, 0x310); 814 adm8211_rf_write_syn_max2820(dev, 0x5, 0x000); 815 break; 816 817 case ADM8211_AL2210L: 818 adm8211_rf_write_syn_al2210l(dev, 0x0, 0x0196C); 819 adm8211_rf_write_syn_al2210l(dev, 0x1, 0x007CB); 820 adm8211_rf_write_syn_al2210l(dev, 0x2, 0x3582F); 821 adm8211_rf_write_syn_al2210l(dev, 0x3, 0x010A9); 822 adm8211_rf_write_syn_al2210l(dev, 0x4, 0x77280); 823 adm8211_rf_write_syn_al2210l(dev, 0x5, 0x45641); 824 adm8211_rf_write_syn_al2210l(dev, 0x6, 0xEA130); 825 adm8211_rf_write_syn_al2210l(dev, 0x7, 0x80000); 826 adm8211_rf_write_syn_al2210l(dev, 0x8, 0x7850F); 827 adm8211_rf_write_syn_al2210l(dev, 0x9, 0xF900C); 828 adm8211_rf_write_syn_al2210l(dev, 0xA, 0x00000); 829 adm8211_rf_write_syn_al2210l(dev, 0xB, 0x00000); 830 break; 831 832 case ADM8211_RFMD2948: 833 default: 834 break; 835 } 836 } 837 838 static int adm8211_hw_init_bbp(struct ieee80211_hw *dev) 839 { 840 struct adm8211_priv *priv = dev->priv; 841 u32 reg; 842 843 /* write addresses */ 844 if (priv->bbp_type == ADM8211_TYPE_INTERSIL) { 845 ADM8211_CSR_WRITE(MMIWA, 0x100E0C0A); 846 ADM8211_CSR_WRITE(MMIRD0, 0x00007C7E); 847 ADM8211_CSR_WRITE(MMIRD1, 0x00100000); 848 } else if (priv->bbp_type == ADM8211_TYPE_RFMD || 849 priv->bbp_type == ADM8211_TYPE_ADMTEK) { 850 /* check specific BBP type */ 851 switch (priv->specific_bbptype) { 852 case ADM8211_BBP_RFMD3000: 853 case ADM8211_BBP_RFMD3002: 854 ADM8211_CSR_WRITE(MMIWA, 0x00009101); 855 ADM8211_CSR_WRITE(MMIRD0, 0x00000301); 856 break; 857 858 case ADM8211_BBP_ADM8011: 859 ADM8211_CSR_WRITE(MMIWA, 0x00008903); 860 ADM8211_CSR_WRITE(MMIRD0, 0x00001716); 861 862 reg = ADM8211_CSR_READ(BBPCTL); 863 reg &= ~ADM8211_BBPCTL_TYPE; 864 reg |= 0x5 << 18; 865 ADM8211_CSR_WRITE(BBPCTL, reg); 866 break; 867 } 868 869 switch (priv->pdev->revision) { 870 case ADM8211_REV_CA: 871 if (priv->transceiver_type == ADM8211_RFMD2958 || 872 priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER || 873 priv->transceiver_type == ADM8211_RFMD2948) 874 ADM8211_CSR_WRITE(SYNCTL, 0x1 << 22); 875 else if (priv->transceiver_type == ADM8211_MAX2820 || 876 priv->transceiver_type == ADM8211_AL2210L) 877 ADM8211_CSR_WRITE(SYNCTL, 0x3 << 22); 878 break; 879 880 case ADM8211_REV_BA: 881 reg = ADM8211_CSR_READ(MMIRD1); 882 reg &= 0x0000FFFF; 883 reg |= 0x7e100000; 884 ADM8211_CSR_WRITE(MMIRD1, reg); 885 break; 886 887 case ADM8211_REV_AB: 888 case ADM8211_REV_AF: 889 default: 890 ADM8211_CSR_WRITE(MMIRD1, 0x7e100000); 891 break; 892 } 893 894 /* For RFMD */ 895 ADM8211_CSR_WRITE(MACTEST, 0x800); 896 } 897 898 adm8211_hw_init_syn(dev); 899 900 /* Set RF Power control IF pin to PE1+PHYRST# */ 901 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF | 902 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST); 903 ADM8211_CSR_READ(SYNRF); 904 msleep(20); 905 906 /* write BBP regs */ 907 if (priv->bbp_type == ADM8211_TYPE_RFMD) { 908 /* RF3000 BBP */ 909 /* another set: 910 * 11: c8 911 * 14: 14 912 * 15: 50 (chan 1..13; chan 14: d0) 913 * 1c: 00 914 * 1d: 84 915 */ 916 adm8211_write_bbp(dev, RF3000_CCA_CTRL, 0x80); 917 /* antenna selection: diversity */ 918 adm8211_write_bbp(dev, RF3000_DIVERSITY__RSSI, 0x80); 919 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT, 0x74); 920 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, 0x38); 921 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, 0x40); 922 923 if (priv->eeprom->major_version < 2) { 924 adm8211_write_bbp(dev, 0x1c, 0x00); 925 adm8211_write_bbp(dev, 0x1d, 0x80); 926 } else { 927 if (priv->pdev->revision == ADM8211_REV_BA) 928 adm8211_write_bbp(dev, 0x1c, priv->eeprom->cr28); 929 else 930 adm8211_write_bbp(dev, 0x1c, 0x00); 931 932 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29); 933 } 934 } else if (priv->bbp_type == ADM8211_TYPE_ADMTEK) { 935 /* reset baseband */ 936 adm8211_write_bbp(dev, 0x00, 0xFF); 937 /* antenna selection: diversity */ 938 adm8211_write_bbp(dev, 0x07, 0x0A); 939 940 /* TODO: find documentation for this */ 941 switch (priv->transceiver_type) { 942 case ADM8211_RFMD2958: 943 case ADM8211_RFMD2958_RF3000_CONTROL_POWER: 944 adm8211_write_bbp(dev, 0x00, 0x00); 945 adm8211_write_bbp(dev, 0x01, 0x00); 946 adm8211_write_bbp(dev, 0x02, 0x00); 947 adm8211_write_bbp(dev, 0x03, 0x00); 948 adm8211_write_bbp(dev, 0x06, 0x0f); 949 adm8211_write_bbp(dev, 0x09, 0x00); 950 adm8211_write_bbp(dev, 0x0a, 0x00); 951 adm8211_write_bbp(dev, 0x0b, 0x00); 952 adm8211_write_bbp(dev, 0x0c, 0x00); 953 adm8211_write_bbp(dev, 0x0f, 0xAA); 954 adm8211_write_bbp(dev, 0x10, 0x8c); 955 adm8211_write_bbp(dev, 0x11, 0x43); 956 adm8211_write_bbp(dev, 0x18, 0x40); 957 adm8211_write_bbp(dev, 0x20, 0x23); 958 adm8211_write_bbp(dev, 0x21, 0x02); 959 adm8211_write_bbp(dev, 0x22, 0x28); 960 adm8211_write_bbp(dev, 0x23, 0x30); 961 adm8211_write_bbp(dev, 0x24, 0x2d); 962 adm8211_write_bbp(dev, 0x28, 0x35); 963 adm8211_write_bbp(dev, 0x2a, 0x8c); 964 adm8211_write_bbp(dev, 0x2b, 0x81); 965 adm8211_write_bbp(dev, 0x2c, 0x44); 966 adm8211_write_bbp(dev, 0x2d, 0x0A); 967 adm8211_write_bbp(dev, 0x29, 0x40); 968 adm8211_write_bbp(dev, 0x60, 0x08); 969 adm8211_write_bbp(dev, 0x64, 0x01); 970 break; 971 972 case ADM8211_MAX2820: 973 adm8211_write_bbp(dev, 0x00, 0x00); 974 adm8211_write_bbp(dev, 0x01, 0x00); 975 adm8211_write_bbp(dev, 0x02, 0x00); 976 adm8211_write_bbp(dev, 0x03, 0x00); 977 adm8211_write_bbp(dev, 0x06, 0x0f); 978 adm8211_write_bbp(dev, 0x09, 0x05); 979 adm8211_write_bbp(dev, 0x0a, 0x02); 980 adm8211_write_bbp(dev, 0x0b, 0x00); 981 adm8211_write_bbp(dev, 0x0c, 0x0f); 982 adm8211_write_bbp(dev, 0x0f, 0x55); 983 adm8211_write_bbp(dev, 0x10, 0x8d); 984 adm8211_write_bbp(dev, 0x11, 0x43); 985 adm8211_write_bbp(dev, 0x18, 0x4a); 986 adm8211_write_bbp(dev, 0x20, 0x20); 987 adm8211_write_bbp(dev, 0x21, 0x02); 988 adm8211_write_bbp(dev, 0x22, 0x23); 989 adm8211_write_bbp(dev, 0x23, 0x30); 990 adm8211_write_bbp(dev, 0x24, 0x2d); 991 adm8211_write_bbp(dev, 0x2a, 0x8c); 992 adm8211_write_bbp(dev, 0x2b, 0x81); 993 adm8211_write_bbp(dev, 0x2c, 0x44); 994 adm8211_write_bbp(dev, 0x29, 0x4a); 995 adm8211_write_bbp(dev, 0x60, 0x2b); 996 adm8211_write_bbp(dev, 0x64, 0x01); 997 break; 998 999 case ADM8211_AL2210L: 1000 adm8211_write_bbp(dev, 0x00, 0x00); 1001 adm8211_write_bbp(dev, 0x01, 0x00); 1002 adm8211_write_bbp(dev, 0x02, 0x00); 1003 adm8211_write_bbp(dev, 0x03, 0x00); 1004 adm8211_write_bbp(dev, 0x06, 0x0f); 1005 adm8211_write_bbp(dev, 0x07, 0x05); 1006 adm8211_write_bbp(dev, 0x08, 0x03); 1007 adm8211_write_bbp(dev, 0x09, 0x00); 1008 adm8211_write_bbp(dev, 0x0a, 0x00); 1009 adm8211_write_bbp(dev, 0x0b, 0x00); 1010 adm8211_write_bbp(dev, 0x0c, 0x10); 1011 adm8211_write_bbp(dev, 0x0f, 0x55); 1012 adm8211_write_bbp(dev, 0x10, 0x8d); 1013 adm8211_write_bbp(dev, 0x11, 0x43); 1014 adm8211_write_bbp(dev, 0x18, 0x4a); 1015 adm8211_write_bbp(dev, 0x20, 0x20); 1016 adm8211_write_bbp(dev, 0x21, 0x02); 1017 adm8211_write_bbp(dev, 0x22, 0x23); 1018 adm8211_write_bbp(dev, 0x23, 0x30); 1019 adm8211_write_bbp(dev, 0x24, 0x2d); 1020 adm8211_write_bbp(dev, 0x2a, 0xaa); 1021 adm8211_write_bbp(dev, 0x2b, 0x81); 1022 adm8211_write_bbp(dev, 0x2c, 0x44); 1023 adm8211_write_bbp(dev, 0x29, 0xfa); 1024 adm8211_write_bbp(dev, 0x60, 0x2d); 1025 adm8211_write_bbp(dev, 0x64, 0x01); 1026 break; 1027 1028 case ADM8211_RFMD2948: 1029 break; 1030 1031 default: 1032 wiphy_debug(dev->wiphy, "unsupported transceiver %d\n", 1033 priv->transceiver_type); 1034 break; 1035 } 1036 } else 1037 wiphy_debug(dev->wiphy, "unsupported BBP %d\n", priv->bbp_type); 1038 1039 ADM8211_CSR_WRITE(SYNRF, 0); 1040 1041 /* Set RF CAL control source to MAC control */ 1042 reg = ADM8211_CSR_READ(SYNCTL); 1043 reg |= ADM8211_SYNCTL_SELCAL; 1044 ADM8211_CSR_WRITE(SYNCTL, reg); 1045 1046 return 0; 1047 } 1048 1049 /* configures hw beacons/probe responses */ 1050 static int adm8211_set_rate(struct ieee80211_hw *dev) 1051 { 1052 struct adm8211_priv *priv = dev->priv; 1053 u32 reg; 1054 int i = 0; 1055 u8 rate_buf[12] = {0}; 1056 1057 /* write supported rates */ 1058 if (priv->pdev->revision != ADM8211_REV_BA) { 1059 rate_buf[0] = ARRAY_SIZE(adm8211_rates); 1060 for (i = 0; i < ARRAY_SIZE(adm8211_rates); i++) 1061 rate_buf[i + 1] = (adm8211_rates[i].bitrate / 5) | 0x80; 1062 } else { 1063 /* workaround for rev BA specific bug */ 1064 rate_buf[0] = 0x04; 1065 rate_buf[1] = 0x82; 1066 rate_buf[2] = 0x04; 1067 rate_buf[3] = 0x0b; 1068 rate_buf[4] = 0x16; 1069 } 1070 1071 adm8211_write_sram_bytes(dev, ADM8211_SRAM_SUPP_RATE, rate_buf, 1072 ARRAY_SIZE(adm8211_rates) + 1); 1073 1074 reg = ADM8211_CSR_READ(PLCPHD) & 0x00FFFFFF; /* keep bits 0-23 */ 1075 reg |= 1 << 15; /* short preamble */ 1076 reg |= 110 << 24; 1077 ADM8211_CSR_WRITE(PLCPHD, reg); 1078 1079 /* MTMLT = 512 TU (max TX MSDU lifetime) 1080 * BCNTSIG = plcp_signal (beacon, probe resp, and atim TX rate) 1081 * SRTYLIM = 224 (short retry limit, TX header value is default) */ 1082 ADM8211_CSR_WRITE(TXLMT, (512 << 16) | (110 << 8) | (224 << 0)); 1083 1084 return 0; 1085 } 1086 1087 static void adm8211_hw_init(struct ieee80211_hw *dev) 1088 { 1089 struct adm8211_priv *priv = dev->priv; 1090 u32 reg; 1091 u8 cline; 1092 1093 reg = ADM8211_CSR_READ(PAR); 1094 reg |= ADM8211_PAR_MRLE | ADM8211_PAR_MRME; 1095 reg &= ~(ADM8211_PAR_BAR | ADM8211_PAR_CAL); 1096 1097 if (!pci_set_mwi(priv->pdev)) { 1098 reg |= 0x1 << 24; 1099 pci_read_config_byte(priv->pdev, PCI_CACHE_LINE_SIZE, &cline); 1100 1101 switch (cline) { 1102 case 0x8: 1103 reg |= (0x1 << 14); 1104 break; 1105 case 0x10: 1106 reg |= (0x2 << 14); 1107 break; 1108 case 0x20: 1109 reg |= (0x3 << 14); 1110 break; 1111 default: 1112 reg |= (0x0 << 14); 1113 break; 1114 } 1115 } 1116 1117 ADM8211_CSR_WRITE(PAR, reg); 1118 1119 reg = ADM8211_CSR_READ(CSR_TEST1); 1120 reg &= ~(0xF << 28); 1121 reg |= (1 << 28) | (1 << 31); 1122 ADM8211_CSR_WRITE(CSR_TEST1, reg); 1123 1124 /* lose link after 4 lost beacons */ 1125 reg = (0x04 << 21) | ADM8211_WCSR_TSFTWE | ADM8211_WCSR_LSOE; 1126 ADM8211_CSR_WRITE(WCSR, reg); 1127 1128 /* Disable APM, enable receive FIFO threshold, and set drain receive 1129 * threshold to store-and-forward */ 1130 reg = ADM8211_CSR_READ(CMDR); 1131 reg &= ~(ADM8211_CMDR_APM | ADM8211_CMDR_DRT); 1132 reg |= ADM8211_CMDR_RTE | ADM8211_CMDR_DRT_SF; 1133 ADM8211_CSR_WRITE(CMDR, reg); 1134 1135 adm8211_set_rate(dev); 1136 1137 /* 4-bit values: 1138 * PWR1UP = 8 * 2 ms 1139 * PWR0PAPE = 8 us or 5 us 1140 * PWR1PAPE = 1 us or 3 us 1141 * PWR0TRSW = 5 us 1142 * PWR1TRSW = 12 us 1143 * PWR0PE2 = 13 us 1144 * PWR1PE2 = 1 us 1145 * PWR0TXPE = 8 or 6 */ 1146 if (priv->pdev->revision < ADM8211_REV_CA) 1147 ADM8211_CSR_WRITE(TOFS2, 0x8815cd18); 1148 else 1149 ADM8211_CSR_WRITE(TOFS2, 0x8535cd16); 1150 1151 /* Enable store and forward for transmit */ 1152 priv->nar = ADM8211_NAR_SF | ADM8211_NAR_PB; 1153 ADM8211_CSR_WRITE(NAR, priv->nar); 1154 1155 /* Reset RF */ 1156 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_RADIO); 1157 ADM8211_CSR_READ(SYNRF); 1158 msleep(10); 1159 ADM8211_CSR_WRITE(SYNRF, 0); 1160 ADM8211_CSR_READ(SYNRF); 1161 msleep(5); 1162 1163 /* Set CFP Max Duration to 0x10 TU */ 1164 reg = ADM8211_CSR_READ(CFPP); 1165 reg &= ~(0xffff << 8); 1166 reg |= 0x0010 << 8; 1167 ADM8211_CSR_WRITE(CFPP, reg); 1168 1169 /* USCNT = 0x16 (number of system clocks, 22 MHz, in 1us 1170 * TUCNT = 0x3ff - Tu counter 1024 us */ 1171 ADM8211_CSR_WRITE(TOFS0, (0x16 << 24) | 0x3ff); 1172 1173 /* SLOT=20 us, SIFS=110 cycles of 22 MHz (5 us), 1174 * DIFS=50 us, EIFS=100 us */ 1175 if (priv->pdev->revision < ADM8211_REV_CA) 1176 ADM8211_CSR_WRITE(IFST, (20 << 23) | (110 << 15) | 1177 (50 << 9) | 100); 1178 else 1179 ADM8211_CSR_WRITE(IFST, (20 << 23) | (24 << 15) | 1180 (50 << 9) | 100); 1181 1182 /* PCNT = 1 (MAC idle time awake/sleep, unit S) 1183 * RMRD = 2346 * 8 + 1 us (max RX duration) */ 1184 ADM8211_CSR_WRITE(RMD, (1 << 16) | 18769); 1185 1186 /* MART=65535 us, MIRT=256 us, TSFTOFST=0 us */ 1187 ADM8211_CSR_WRITE(RSPT, 0xffffff00); 1188 1189 /* Initialize BBP (and SYN) */ 1190 adm8211_hw_init_bbp(dev); 1191 1192 /* make sure interrupts are off */ 1193 ADM8211_CSR_WRITE(IER, 0); 1194 1195 /* ACK interrupts */ 1196 ADM8211_CSR_WRITE(STSR, ADM8211_CSR_READ(STSR)); 1197 1198 /* Setup WEP (turns it off for now) */ 1199 reg = ADM8211_CSR_READ(MACTEST); 1200 reg &= ~(7 << 20); 1201 ADM8211_CSR_WRITE(MACTEST, reg); 1202 1203 reg = ADM8211_CSR_READ(WEPCTL); 1204 reg &= ~ADM8211_WEPCTL_WEPENABLE; 1205 reg |= ADM8211_WEPCTL_WEPRXBYP; 1206 ADM8211_CSR_WRITE(WEPCTL, reg); 1207 1208 /* Clear the missed-packet counter. */ 1209 ADM8211_CSR_READ(LPC); 1210 } 1211 1212 static int adm8211_hw_reset(struct ieee80211_hw *dev) 1213 { 1214 struct adm8211_priv *priv = dev->priv; 1215 u32 reg, tmp; 1216 int timeout = 100; 1217 1218 /* Power-on issue */ 1219 /* TODO: check if this is necessary */ 1220 ADM8211_CSR_WRITE(FRCTL, 0); 1221 1222 /* Reset the chip */ 1223 tmp = ADM8211_CSR_READ(PAR); 1224 ADM8211_CSR_WRITE(PAR, ADM8211_PAR_SWR); 1225 1226 while ((ADM8211_CSR_READ(PAR) & ADM8211_PAR_SWR) && timeout--) 1227 msleep(50); 1228 1229 if (timeout <= 0) 1230 return -ETIMEDOUT; 1231 1232 ADM8211_CSR_WRITE(PAR, tmp); 1233 1234 if (priv->pdev->revision == ADM8211_REV_BA && 1235 (priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER || 1236 priv->transceiver_type == ADM8211_RFMD2958)) { 1237 reg = ADM8211_CSR_READ(CSR_TEST1); 1238 reg |= (1 << 4) | (1 << 5); 1239 ADM8211_CSR_WRITE(CSR_TEST1, reg); 1240 } else if (priv->pdev->revision == ADM8211_REV_CA) { 1241 reg = ADM8211_CSR_READ(CSR_TEST1); 1242 reg &= ~((1 << 4) | (1 << 5)); 1243 ADM8211_CSR_WRITE(CSR_TEST1, reg); 1244 } 1245 1246 ADM8211_CSR_WRITE(FRCTL, 0); 1247 1248 reg = ADM8211_CSR_READ(CSR_TEST0); 1249 reg |= ADM8211_CSR_TEST0_EPRLD; /* EEPROM Recall */ 1250 ADM8211_CSR_WRITE(CSR_TEST0, reg); 1251 1252 adm8211_clear_sram(dev); 1253 1254 return 0; 1255 } 1256 1257 static u64 adm8211_get_tsft(struct ieee80211_hw *dev, 1258 struct ieee80211_vif *vif) 1259 { 1260 struct adm8211_priv *priv = dev->priv; 1261 u32 tsftl; 1262 u64 tsft; 1263 1264 tsftl = ADM8211_CSR_READ(TSFTL); 1265 tsft = ADM8211_CSR_READ(TSFTH); 1266 tsft <<= 32; 1267 tsft |= tsftl; 1268 1269 return tsft; 1270 } 1271 1272 static void adm8211_set_interval(struct ieee80211_hw *dev, 1273 unsigned short bi, unsigned short li) 1274 { 1275 struct adm8211_priv *priv = dev->priv; 1276 u32 reg; 1277 1278 /* BP (beacon interval) = data->beacon_interval 1279 * LI (listen interval) = data->listen_interval (in beacon intervals) */ 1280 reg = (bi << 16) | li; 1281 ADM8211_CSR_WRITE(BPLI, reg); 1282 } 1283 1284 static void adm8211_set_bssid(struct ieee80211_hw *dev, const u8 *bssid) 1285 { 1286 struct adm8211_priv *priv = dev->priv; 1287 u32 reg; 1288 1289 ADM8211_CSR_WRITE(BSSID0, le32_to_cpu(*(__le32 *)bssid)); 1290 reg = ADM8211_CSR_READ(ABDA1); 1291 reg &= 0x0000ffff; 1292 reg |= (bssid[4] << 16) | (bssid[5] << 24); 1293 ADM8211_CSR_WRITE(ABDA1, reg); 1294 } 1295 1296 static int adm8211_config(struct ieee80211_hw *dev, u32 changed) 1297 { 1298 struct adm8211_priv *priv = dev->priv; 1299 struct ieee80211_conf *conf = &dev->conf; 1300 int channel = 1301 ieee80211_frequency_to_channel(conf->chandef.chan->center_freq); 1302 1303 if (channel != priv->channel) { 1304 priv->channel = channel; 1305 adm8211_rf_set_channel(dev, priv->channel); 1306 } 1307 1308 return 0; 1309 } 1310 1311 static void adm8211_bss_info_changed(struct ieee80211_hw *dev, 1312 struct ieee80211_vif *vif, 1313 struct ieee80211_bss_conf *conf, 1314 u64 changes) 1315 { 1316 struct adm8211_priv *priv = dev->priv; 1317 1318 if (!(changes & BSS_CHANGED_BSSID)) 1319 return; 1320 1321 if (!ether_addr_equal(conf->bssid, priv->bssid)) { 1322 adm8211_set_bssid(dev, conf->bssid); 1323 memcpy(priv->bssid, conf->bssid, ETH_ALEN); 1324 } 1325 } 1326 1327 static u64 adm8211_prepare_multicast(struct ieee80211_hw *hw, 1328 struct netdev_hw_addr_list *mc_list) 1329 { 1330 unsigned int bit_nr; 1331 u32 mc_filter[2]; 1332 struct netdev_hw_addr *ha; 1333 1334 mc_filter[1] = mc_filter[0] = 0; 1335 1336 netdev_hw_addr_list_for_each(ha, mc_list) { 1337 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26; 1338 1339 bit_nr &= 0x3F; 1340 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31); 1341 } 1342 1343 return mc_filter[0] | ((u64)(mc_filter[1]) << 32); 1344 } 1345 1346 static void adm8211_configure_filter(struct ieee80211_hw *dev, 1347 unsigned int changed_flags, 1348 unsigned int *total_flags, 1349 u64 multicast) 1350 { 1351 static const u8 bcast[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; 1352 struct adm8211_priv *priv = dev->priv; 1353 unsigned int new_flags; 1354 u32 mc_filter[2]; 1355 1356 mc_filter[0] = multicast; 1357 mc_filter[1] = multicast >> 32; 1358 1359 new_flags = 0; 1360 1361 if (*total_flags & FIF_ALLMULTI || multicast == ~(0ULL)) { 1362 new_flags |= FIF_ALLMULTI; 1363 priv->nar &= ~ADM8211_NAR_PR; 1364 priv->nar |= ADM8211_NAR_MM; 1365 mc_filter[1] = mc_filter[0] = ~0; 1366 } else { 1367 priv->nar &= ~(ADM8211_NAR_MM | ADM8211_NAR_PR); 1368 } 1369 1370 ADM8211_IDLE_RX(); 1371 1372 ADM8211_CSR_WRITE(MAR0, mc_filter[0]); 1373 ADM8211_CSR_WRITE(MAR1, mc_filter[1]); 1374 ADM8211_CSR_READ(NAR); 1375 1376 if (priv->nar & ADM8211_NAR_PR) 1377 ieee80211_hw_set(dev, RX_INCLUDES_FCS); 1378 else 1379 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, dev->flags); 1380 1381 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) 1382 adm8211_set_bssid(dev, bcast); 1383 else 1384 adm8211_set_bssid(dev, priv->bssid); 1385 1386 ADM8211_RESTORE(); 1387 1388 *total_flags = new_flags; 1389 } 1390 1391 static int adm8211_add_interface(struct ieee80211_hw *dev, 1392 struct ieee80211_vif *vif) 1393 { 1394 struct adm8211_priv *priv = dev->priv; 1395 if (priv->mode != NL80211_IFTYPE_MONITOR) 1396 return -EOPNOTSUPP; 1397 1398 switch (vif->type) { 1399 case NL80211_IFTYPE_STATION: 1400 priv->mode = vif->type; 1401 break; 1402 default: 1403 return -EOPNOTSUPP; 1404 } 1405 1406 ADM8211_IDLE(); 1407 1408 ADM8211_CSR_WRITE(PAR0, le32_to_cpu(*(__le32 *)vif->addr)); 1409 ADM8211_CSR_WRITE(PAR1, le16_to_cpu(*(__le16 *)(vif->addr + 4))); 1410 1411 adm8211_update_mode(dev); 1412 1413 ADM8211_RESTORE(); 1414 1415 return 0; 1416 } 1417 1418 static void adm8211_remove_interface(struct ieee80211_hw *dev, 1419 struct ieee80211_vif *vif) 1420 { 1421 struct adm8211_priv *priv = dev->priv; 1422 priv->mode = NL80211_IFTYPE_MONITOR; 1423 } 1424 1425 static int adm8211_init_rings(struct ieee80211_hw *dev) 1426 { 1427 struct adm8211_priv *priv = dev->priv; 1428 struct adm8211_desc *desc = NULL; 1429 struct adm8211_rx_ring_info *rx_info; 1430 struct adm8211_tx_ring_info *tx_info; 1431 unsigned int i; 1432 1433 for (i = 0; i < priv->rx_ring_size; i++) { 1434 desc = &priv->rx_ring[i]; 1435 desc->status = 0; 1436 desc->length = cpu_to_le32(RX_PKT_SIZE); 1437 priv->rx_buffers[i].skb = NULL; 1438 } 1439 /* Mark the end of RX ring; hw returns to base address after this 1440 * descriptor */ 1441 desc->length |= cpu_to_le32(RDES1_CONTROL_RER); 1442 1443 for (i = 0; i < priv->rx_ring_size; i++) { 1444 desc = &priv->rx_ring[i]; 1445 rx_info = &priv->rx_buffers[i]; 1446 1447 rx_info->skb = dev_alloc_skb(RX_PKT_SIZE); 1448 if (rx_info->skb == NULL) 1449 break; 1450 rx_info->mapping = dma_map_single(&priv->pdev->dev, 1451 skb_tail_pointer(rx_info->skb), 1452 RX_PKT_SIZE, 1453 DMA_FROM_DEVICE); 1454 if (dma_mapping_error(&priv->pdev->dev, rx_info->mapping)) { 1455 dev_kfree_skb(rx_info->skb); 1456 rx_info->skb = NULL; 1457 break; 1458 } 1459 1460 desc->buffer1 = cpu_to_le32(rx_info->mapping); 1461 desc->status = cpu_to_le32(RDES0_STATUS_OWN | RDES0_STATUS_SQL); 1462 } 1463 1464 /* Setup TX ring. TX buffers descriptors will be filled in as needed */ 1465 for (i = 0; i < priv->tx_ring_size; i++) { 1466 desc = &priv->tx_ring[i]; 1467 tx_info = &priv->tx_buffers[i]; 1468 1469 tx_info->skb = NULL; 1470 tx_info->mapping = 0; 1471 desc->status = 0; 1472 } 1473 desc->length = cpu_to_le32(TDES1_CONTROL_TER); 1474 1475 priv->cur_rx = priv->cur_tx = priv->dirty_tx = 0; 1476 ADM8211_CSR_WRITE(RDB, priv->rx_ring_dma); 1477 ADM8211_CSR_WRITE(TDBD, priv->tx_ring_dma); 1478 1479 return 0; 1480 } 1481 1482 static void adm8211_free_rings(struct ieee80211_hw *dev) 1483 { 1484 struct adm8211_priv *priv = dev->priv; 1485 unsigned int i; 1486 1487 for (i = 0; i < priv->rx_ring_size; i++) { 1488 if (!priv->rx_buffers[i].skb) 1489 continue; 1490 1491 dma_unmap_single(&priv->pdev->dev, 1492 priv->rx_buffers[i].mapping, RX_PKT_SIZE, 1493 DMA_FROM_DEVICE); 1494 1495 dev_kfree_skb(priv->rx_buffers[i].skb); 1496 } 1497 1498 for (i = 0; i < priv->tx_ring_size; i++) { 1499 if (!priv->tx_buffers[i].skb) 1500 continue; 1501 1502 dma_unmap_single(&priv->pdev->dev, 1503 priv->tx_buffers[i].mapping, 1504 priv->tx_buffers[i].skb->len, DMA_TO_DEVICE); 1505 1506 dev_kfree_skb(priv->tx_buffers[i].skb); 1507 } 1508 } 1509 1510 static int adm8211_start(struct ieee80211_hw *dev) 1511 { 1512 struct adm8211_priv *priv = dev->priv; 1513 int retval; 1514 1515 /* Power up MAC and RF chips */ 1516 retval = adm8211_hw_reset(dev); 1517 if (retval) { 1518 wiphy_err(dev->wiphy, "hardware reset failed\n"); 1519 goto fail; 1520 } 1521 1522 retval = adm8211_init_rings(dev); 1523 if (retval) { 1524 wiphy_err(dev->wiphy, "failed to initialize rings\n"); 1525 goto fail; 1526 } 1527 1528 /* Init hardware */ 1529 adm8211_hw_init(dev); 1530 adm8211_rf_set_channel(dev, priv->channel); 1531 1532 retval = request_irq(priv->pdev->irq, adm8211_interrupt, 1533 IRQF_SHARED, "adm8211", dev); 1534 if (retval) { 1535 wiphy_err(dev->wiphy, "failed to register IRQ handler\n"); 1536 goto fail; 1537 } 1538 1539 ADM8211_CSR_WRITE(IER, ADM8211_IER_NIE | ADM8211_IER_AIE | 1540 ADM8211_IER_RCIE | ADM8211_IER_TCIE | 1541 ADM8211_IER_TDUIE | ADM8211_IER_GPTIE); 1542 priv->mode = NL80211_IFTYPE_MONITOR; 1543 adm8211_update_mode(dev); 1544 ADM8211_CSR_WRITE(RDR, 0); 1545 1546 adm8211_set_interval(dev, 100, 10); 1547 return 0; 1548 1549 fail: 1550 return retval; 1551 } 1552 1553 static void adm8211_stop(struct ieee80211_hw *dev, bool suspend) 1554 { 1555 struct adm8211_priv *priv = dev->priv; 1556 1557 priv->mode = NL80211_IFTYPE_UNSPECIFIED; 1558 priv->nar = 0; 1559 ADM8211_CSR_WRITE(NAR, 0); 1560 ADM8211_CSR_WRITE(IER, 0); 1561 ADM8211_CSR_READ(NAR); 1562 1563 free_irq(priv->pdev->irq, dev); 1564 1565 adm8211_free_rings(dev); 1566 } 1567 1568 static void adm8211_calc_durations(int *dur, int *plcp, size_t payload_len, int len, 1569 int plcp_signal, int short_preamble) 1570 { 1571 /* Alternative calculation from NetBSD: */ 1572 1573 /* IEEE 802.11b durations for DSSS PHY in microseconds */ 1574 #define IEEE80211_DUR_DS_LONG_PREAMBLE 144 1575 #define IEEE80211_DUR_DS_SHORT_PREAMBLE 72 1576 #define IEEE80211_DUR_DS_FAST_PLCPHDR 24 1577 #define IEEE80211_DUR_DS_SLOW_PLCPHDR 48 1578 #define IEEE80211_DUR_DS_SLOW_ACK 112 1579 #define IEEE80211_DUR_DS_FAST_ACK 56 1580 #define IEEE80211_DUR_DS_SLOW_CTS 112 1581 #define IEEE80211_DUR_DS_FAST_CTS 56 1582 #define IEEE80211_DUR_DS_SLOT 20 1583 #define IEEE80211_DUR_DS_SIFS 10 1584 1585 int remainder; 1586 1587 *dur = (80 * (24 + payload_len) + plcp_signal - 1) 1588 / plcp_signal; 1589 1590 if (plcp_signal <= PLCP_SIGNAL_2M) 1591 /* 1-2Mbps WLAN: send ACK/CTS at 1Mbps */ 1592 *dur += 3 * (IEEE80211_DUR_DS_SIFS + 1593 IEEE80211_DUR_DS_SHORT_PREAMBLE + 1594 IEEE80211_DUR_DS_FAST_PLCPHDR) + 1595 IEEE80211_DUR_DS_SLOW_CTS + IEEE80211_DUR_DS_SLOW_ACK; 1596 else 1597 /* 5-11Mbps WLAN: send ACK/CTS at 2Mbps */ 1598 *dur += 3 * (IEEE80211_DUR_DS_SIFS + 1599 IEEE80211_DUR_DS_SHORT_PREAMBLE + 1600 IEEE80211_DUR_DS_FAST_PLCPHDR) + 1601 IEEE80211_DUR_DS_FAST_CTS + IEEE80211_DUR_DS_FAST_ACK; 1602 1603 /* lengthen duration if long preamble */ 1604 if (!short_preamble) 1605 *dur += 3 * (IEEE80211_DUR_DS_LONG_PREAMBLE - 1606 IEEE80211_DUR_DS_SHORT_PREAMBLE) + 1607 3 * (IEEE80211_DUR_DS_SLOW_PLCPHDR - 1608 IEEE80211_DUR_DS_FAST_PLCPHDR); 1609 1610 1611 *plcp = (80 * len) / plcp_signal; 1612 remainder = (80 * len) % plcp_signal; 1613 if (plcp_signal == PLCP_SIGNAL_11M && 1614 remainder <= 30 && remainder > 0) 1615 *plcp = (*plcp | 0x8000) + 1; 1616 else if (remainder) 1617 (*plcp)++; 1618 } 1619 1620 /* Transmit skb w/adm8211_tx_hdr (802.11 header created by hardware) */ 1621 static int adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb, 1622 u16 plcp_signal, 1623 size_t hdrlen) 1624 { 1625 struct adm8211_priv *priv = dev->priv; 1626 unsigned long flags; 1627 dma_addr_t mapping; 1628 unsigned int entry; 1629 u32 flag; 1630 1631 mapping = dma_map_single(&priv->pdev->dev, skb->data, skb->len, 1632 DMA_TO_DEVICE); 1633 if (dma_mapping_error(&priv->pdev->dev, mapping)) 1634 return -ENOMEM; 1635 1636 spin_lock_irqsave(&priv->lock, flags); 1637 1638 if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size / 2) 1639 flag = TDES1_CONTROL_IC | TDES1_CONTROL_LS | TDES1_CONTROL_FS; 1640 else 1641 flag = TDES1_CONTROL_LS | TDES1_CONTROL_FS; 1642 1643 if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size - 2) 1644 ieee80211_stop_queue(dev, 0); 1645 1646 entry = priv->cur_tx % priv->tx_ring_size; 1647 1648 priv->tx_buffers[entry].skb = skb; 1649 priv->tx_buffers[entry].mapping = mapping; 1650 priv->tx_buffers[entry].hdrlen = hdrlen; 1651 priv->tx_ring[entry].buffer1 = cpu_to_le32(mapping); 1652 1653 if (entry == priv->tx_ring_size - 1) 1654 flag |= TDES1_CONTROL_TER; 1655 priv->tx_ring[entry].length = cpu_to_le32(flag | skb->len); 1656 1657 /* Set TX rate (SIGNAL field in PLCP PPDU format) */ 1658 flag = TDES0_CONTROL_OWN | (plcp_signal << 20) | 8 /* ? */; 1659 priv->tx_ring[entry].status = cpu_to_le32(flag); 1660 1661 priv->cur_tx++; 1662 1663 spin_unlock_irqrestore(&priv->lock, flags); 1664 1665 /* Trigger transmit poll */ 1666 ADM8211_CSR_WRITE(TDR, 0); 1667 1668 return 0; 1669 } 1670 1671 /* Put adm8211_tx_hdr on skb and transmit */ 1672 static void adm8211_tx(struct ieee80211_hw *dev, 1673 struct ieee80211_tx_control *control, 1674 struct sk_buff *skb) 1675 { 1676 struct adm8211_tx_hdr *txhdr; 1677 size_t payload_len, hdrlen; 1678 int plcp, dur, len, plcp_signal, short_preamble; 1679 struct ieee80211_hdr *hdr; 1680 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 1681 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(dev, info); 1682 u8 rc_flags; 1683 1684 rc_flags = info->control.rates[0].flags; 1685 short_preamble = !!(rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE); 1686 plcp_signal = txrate->bitrate; 1687 1688 hdr = (struct ieee80211_hdr *)skb->data; 1689 hdrlen = ieee80211_hdrlen(hdr->frame_control); 1690 memcpy(skb->cb, skb->data, hdrlen); 1691 hdr = (struct ieee80211_hdr *)skb->cb; 1692 skb_pull(skb, hdrlen); 1693 payload_len = skb->len; 1694 1695 txhdr = skb_push(skb, sizeof(*txhdr)); 1696 memset(txhdr, 0, sizeof(*txhdr)); 1697 memcpy(txhdr->da, ieee80211_get_DA(hdr), ETH_ALEN); 1698 txhdr->signal = plcp_signal; 1699 txhdr->frame_body_size = cpu_to_le16(payload_len); 1700 txhdr->frame_control = hdr->frame_control; 1701 1702 len = hdrlen + payload_len + FCS_LEN; 1703 1704 txhdr->frag = cpu_to_le16(0x0FFF); 1705 adm8211_calc_durations(&dur, &plcp, payload_len, 1706 len, plcp_signal, short_preamble); 1707 txhdr->plcp_frag_head_len = cpu_to_le16(plcp); 1708 txhdr->plcp_frag_tail_len = cpu_to_le16(plcp); 1709 txhdr->dur_frag_head = cpu_to_le16(dur); 1710 txhdr->dur_frag_tail = cpu_to_le16(dur); 1711 1712 txhdr->header_control = cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_EXTEND_HEADER); 1713 1714 if (short_preamble) 1715 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_SHORT_PREAMBLE); 1716 1717 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) 1718 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS); 1719 1720 txhdr->retry_limit = info->control.rates[0].count; 1721 1722 if (adm8211_tx_raw(dev, skb, plcp_signal, hdrlen)) { 1723 /* Drop packet */ 1724 ieee80211_free_txskb(dev, skb); 1725 } 1726 } 1727 1728 static int adm8211_alloc_rings(struct ieee80211_hw *dev) 1729 { 1730 struct adm8211_priv *priv = dev->priv; 1731 unsigned int ring_size; 1732 1733 priv->rx_buffers = kmalloc(sizeof(*priv->rx_buffers) * priv->rx_ring_size + 1734 sizeof(*priv->tx_buffers) * priv->tx_ring_size, GFP_KERNEL); 1735 if (!priv->rx_buffers) 1736 return -ENOMEM; 1737 1738 priv->tx_buffers = (void *)priv->rx_buffers + 1739 sizeof(*priv->rx_buffers) * priv->rx_ring_size; 1740 1741 /* Allocate TX/RX descriptors */ 1742 ring_size = sizeof(struct adm8211_desc) * priv->rx_ring_size + 1743 sizeof(struct adm8211_desc) * priv->tx_ring_size; 1744 priv->rx_ring = dma_alloc_coherent(&priv->pdev->dev, ring_size, 1745 &priv->rx_ring_dma, GFP_KERNEL); 1746 1747 if (!priv->rx_ring) { 1748 kfree(priv->rx_buffers); 1749 priv->rx_buffers = NULL; 1750 priv->tx_buffers = NULL; 1751 return -ENOMEM; 1752 } 1753 1754 priv->tx_ring = priv->rx_ring + priv->rx_ring_size; 1755 priv->tx_ring_dma = priv->rx_ring_dma + 1756 sizeof(struct adm8211_desc) * priv->rx_ring_size; 1757 1758 return 0; 1759 } 1760 1761 static const struct ieee80211_ops adm8211_ops = { 1762 .add_chanctx = ieee80211_emulate_add_chanctx, 1763 .remove_chanctx = ieee80211_emulate_remove_chanctx, 1764 .change_chanctx = ieee80211_emulate_change_chanctx, 1765 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, 1766 .tx = adm8211_tx, 1767 .wake_tx_queue = ieee80211_handle_wake_tx_queue, 1768 .start = adm8211_start, 1769 .stop = adm8211_stop, 1770 .add_interface = adm8211_add_interface, 1771 .remove_interface = adm8211_remove_interface, 1772 .config = adm8211_config, 1773 .bss_info_changed = adm8211_bss_info_changed, 1774 .prepare_multicast = adm8211_prepare_multicast, 1775 .configure_filter = adm8211_configure_filter, 1776 .get_stats = adm8211_get_stats, 1777 .get_tsf = adm8211_get_tsft 1778 }; 1779 1780 static int adm8211_probe(struct pci_dev *pdev, 1781 const struct pci_device_id *id) 1782 { 1783 struct ieee80211_hw *dev; 1784 struct adm8211_priv *priv; 1785 unsigned long mem_len; 1786 unsigned int io_len; 1787 int err; 1788 u32 reg; 1789 u8 perm_addr[ETH_ALEN]; 1790 1791 err = pci_enable_device(pdev); 1792 if (err) { 1793 printk(KERN_ERR "%s (adm8211): Cannot enable new PCI device\n", 1794 pci_name(pdev)); 1795 return err; 1796 } 1797 1798 io_len = pci_resource_len(pdev, 0); 1799 mem_len = pci_resource_len(pdev, 1); 1800 if (io_len < 256 || mem_len < 1024) { 1801 printk(KERN_ERR "%s (adm8211): Too short PCI resources\n", 1802 pci_name(pdev)); 1803 err = -ENOMEM; 1804 goto err_disable_pdev; 1805 } 1806 1807 1808 /* check signature */ 1809 pci_read_config_dword(pdev, 0x80 /* CR32 */, ®); 1810 if (reg != ADM8211_SIG1 && reg != ADM8211_SIG2) { 1811 printk(KERN_ERR "%s (adm8211): Invalid signature (0x%x)\n", 1812 pci_name(pdev), reg); 1813 err = -EINVAL; 1814 goto err_disable_pdev; 1815 } 1816 1817 err = pci_request_regions(pdev, "adm8211"); 1818 if (err) { 1819 printk(KERN_ERR "%s (adm8211): Cannot obtain PCI resources\n", 1820 pci_name(pdev)); 1821 return err; /* someone else grabbed it? don't disable it */ 1822 } 1823 1824 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 1825 if (err) { 1826 printk(KERN_ERR "%s (adm8211): No suitable DMA available\n", 1827 pci_name(pdev)); 1828 goto err_free_reg; 1829 } 1830 1831 pci_set_master(pdev); 1832 1833 dev = ieee80211_alloc_hw(sizeof(*priv), &adm8211_ops); 1834 if (!dev) { 1835 printk(KERN_ERR "%s (adm8211): ieee80211 alloc failed\n", 1836 pci_name(pdev)); 1837 err = -ENOMEM; 1838 goto err_free_reg; 1839 } 1840 priv = dev->priv; 1841 priv->pdev = pdev; 1842 1843 spin_lock_init(&priv->lock); 1844 1845 SET_IEEE80211_DEV(dev, &pdev->dev); 1846 1847 pci_set_drvdata(pdev, dev); 1848 1849 priv->map = pci_iomap(pdev, 1, mem_len); 1850 if (!priv->map) 1851 priv->map = pci_iomap(pdev, 0, io_len); 1852 1853 if (!priv->map) { 1854 printk(KERN_ERR "%s (adm8211): Cannot map device memory\n", 1855 pci_name(pdev)); 1856 err = -ENOMEM; 1857 goto err_free_dev; 1858 } 1859 1860 priv->rx_ring_size = rx_ring_size; 1861 priv->tx_ring_size = tx_ring_size; 1862 1863 err = adm8211_alloc_rings(dev); 1864 if (err) { 1865 printk(KERN_ERR "%s (adm8211): Cannot allocate TX/RX ring\n", 1866 pci_name(pdev)); 1867 goto err_iounmap; 1868 } 1869 1870 *(__le32 *)perm_addr = cpu_to_le32(ADM8211_CSR_READ(PAR0)); 1871 *(__le16 *)&perm_addr[4] = 1872 cpu_to_le16(ADM8211_CSR_READ(PAR1) & 0xFFFF); 1873 1874 if (!is_valid_ether_addr(perm_addr)) { 1875 printk(KERN_WARNING "%s (adm8211): Invalid hwaddr in EEPROM!\n", 1876 pci_name(pdev)); 1877 eth_random_addr(perm_addr); 1878 } 1879 SET_IEEE80211_PERM_ADDR(dev, perm_addr); 1880 1881 dev->extra_tx_headroom = sizeof(struct adm8211_tx_hdr); 1882 /* dev->flags = RX_INCLUDES_FCS in promisc mode */ 1883 ieee80211_hw_set(dev, SIGNAL_UNSPEC); 1884 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); 1885 1886 dev->max_signal = 100; /* FIXME: find better value */ 1887 1888 dev->queues = 1; /* ADM8211C supports more, maybe ADM8211B too */ 1889 1890 priv->retry_limit = 3; 1891 priv->ant_power = 0x40; 1892 priv->tx_power = 0x40; 1893 priv->lpf_cutoff = 0xFF; 1894 priv->lnags_threshold = 0xFF; 1895 priv->mode = NL80211_IFTYPE_UNSPECIFIED; 1896 1897 /* Power-on issue. EEPROM won't read correctly without */ 1898 if (pdev->revision >= ADM8211_REV_BA) { 1899 ADM8211_CSR_WRITE(FRCTL, 0); 1900 ADM8211_CSR_READ(FRCTL); 1901 ADM8211_CSR_WRITE(FRCTL, 1); 1902 ADM8211_CSR_READ(FRCTL); 1903 msleep(100); 1904 } 1905 1906 err = adm8211_read_eeprom(dev); 1907 if (err) { 1908 printk(KERN_ERR "%s (adm8211): Can't alloc eeprom buffer\n", 1909 pci_name(pdev)); 1910 goto err_free_desc; 1911 } 1912 1913 priv->channel = 1; 1914 1915 dev->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band; 1916 1917 wiphy_ext_feature_set(dev->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 1918 1919 err = ieee80211_register_hw(dev); 1920 if (err) { 1921 printk(KERN_ERR "%s (adm8211): Cannot register device\n", 1922 pci_name(pdev)); 1923 goto err_free_eeprom; 1924 } 1925 1926 wiphy_info(dev->wiphy, "hwaddr %pM, Rev 0x%02x\n", 1927 dev->wiphy->perm_addr, pdev->revision); 1928 1929 return 0; 1930 1931 err_free_eeprom: 1932 kfree(priv->eeprom); 1933 1934 err_free_desc: 1935 dma_free_coherent(&pdev->dev, 1936 sizeof(struct adm8211_desc) * priv->rx_ring_size + 1937 sizeof(struct adm8211_desc) * priv->tx_ring_size, 1938 priv->rx_ring, priv->rx_ring_dma); 1939 kfree(priv->rx_buffers); 1940 1941 err_iounmap: 1942 pci_iounmap(pdev, priv->map); 1943 1944 err_free_dev: 1945 ieee80211_free_hw(dev); 1946 1947 err_free_reg: 1948 pci_release_regions(pdev); 1949 1950 err_disable_pdev: 1951 pci_disable_device(pdev); 1952 return err; 1953 } 1954 1955 1956 static void adm8211_remove(struct pci_dev *pdev) 1957 { 1958 struct ieee80211_hw *dev = pci_get_drvdata(pdev); 1959 struct adm8211_priv *priv; 1960 1961 if (!dev) 1962 return; 1963 1964 ieee80211_unregister_hw(dev); 1965 1966 priv = dev->priv; 1967 1968 dma_free_coherent(&pdev->dev, 1969 sizeof(struct adm8211_desc) * priv->rx_ring_size + 1970 sizeof(struct adm8211_desc) * priv->tx_ring_size, 1971 priv->rx_ring, priv->rx_ring_dma); 1972 1973 kfree(priv->rx_buffers); 1974 kfree(priv->eeprom); 1975 pci_iounmap(pdev, priv->map); 1976 pci_release_regions(pdev); 1977 pci_disable_device(pdev); 1978 ieee80211_free_hw(dev); 1979 } 1980 1981 1982 #define adm8211_suspend NULL 1983 #define adm8211_resume NULL 1984 1985 MODULE_DEVICE_TABLE(pci, adm8211_pci_id_table); 1986 1987 static SIMPLE_DEV_PM_OPS(adm8211_pm_ops, adm8211_suspend, adm8211_resume); 1988 1989 /* TODO: implement enable_wake */ 1990 static struct pci_driver adm8211_driver = { 1991 .name = "adm8211", 1992 .id_table = adm8211_pci_id_table, 1993 .probe = adm8211_probe, 1994 .remove = adm8211_remove, 1995 .driver.pm = &adm8211_pm_ops, 1996 }; 1997 1998 module_pci_driver(adm8211_driver); 1999