1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 2009-2012 Realtek Corporation.*/ 3 4 #include "wifi.h" 5 #include "core.h" 6 #include "pci.h" 7 #include "base.h" 8 #include "ps.h" 9 #include "efuse.h" 10 #include <linux/interrupt.h> 11 #include <linux/export.h> 12 #include <linux/module.h> 13 14 MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>"); 15 MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>"); 16 MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>"); 17 MODULE_LICENSE("GPL"); 18 MODULE_DESCRIPTION("PCI basic driver for rtlwifi"); 19 20 static const u16 pcibridge_vendors[PCI_BRIDGE_VENDOR_MAX] = { 21 INTEL_VENDOR_ID, 22 ATI_VENDOR_ID, 23 AMD_VENDOR_ID, 24 SIS_VENDOR_ID 25 }; 26 27 static const u8 ac_to_hwq[] = { 28 VO_QUEUE, 29 VI_QUEUE, 30 BE_QUEUE, 31 BK_QUEUE 32 }; 33 34 static u8 _rtl_mac_to_hwqueue(struct ieee80211_hw *hw, struct sk_buff *skb) 35 { 36 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); 37 __le16 fc = rtl_get_fc(skb); 38 u8 queue_index = skb_get_queue_mapping(skb); 39 struct ieee80211_hdr *hdr; 40 41 if (unlikely(ieee80211_is_beacon(fc))) 42 return BEACON_QUEUE; 43 if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc)) 44 return MGNT_QUEUE; 45 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE) 46 if (ieee80211_is_nullfunc(fc)) 47 return HIGH_QUEUE; 48 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8822BE) { 49 hdr = rtl_get_hdr(skb); 50 51 if (is_multicast_ether_addr(hdr->addr1) || 52 is_broadcast_ether_addr(hdr->addr1)) 53 return HIGH_QUEUE; 54 } 55 56 return ac_to_hwq[queue_index]; 57 } 58 59 /* Update PCI dependent default settings*/ 60 static void _rtl_pci_update_default_setting(struct ieee80211_hw *hw) 61 { 62 struct rtl_priv *rtlpriv = rtl_priv(hw); 63 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); 64 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); 65 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 66 u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor; 67 u8 init_aspm; 68 69 ppsc->reg_rfps_level = 0; 70 ppsc->support_aspm = false; 71 72 /*Update PCI ASPM setting */ 73 ppsc->const_amdpci_aspm = rtlpci->const_amdpci_aspm; 74 switch (rtlpci->const_pci_aspm) { 75 case 0: 76 /*No ASPM */ 77 break; 78 79 case 1: 80 /*ASPM dynamically enabled/disable. */ 81 ppsc->reg_rfps_level |= RT_RF_LPS_LEVEL_ASPM; 82 break; 83 84 case 2: 85 /*ASPM with Clock Req dynamically enabled/disable. */ 86 ppsc->reg_rfps_level |= (RT_RF_LPS_LEVEL_ASPM | 87 RT_RF_OFF_LEVL_CLK_REQ); 88 break; 89 90 case 3: 91 /* Always enable ASPM and Clock Req 92 * from initialization to halt. 93 */ 94 ppsc->reg_rfps_level &= ~(RT_RF_LPS_LEVEL_ASPM); 95 ppsc->reg_rfps_level |= (RT_RF_PS_LEVEL_ALWAYS_ASPM | 96 RT_RF_OFF_LEVL_CLK_REQ); 97 break; 98 99 case 4: 100 /* Always enable ASPM without Clock Req 101 * from initialization to halt. 102 */ 103 ppsc->reg_rfps_level &= ~(RT_RF_LPS_LEVEL_ASPM | 104 RT_RF_OFF_LEVL_CLK_REQ); 105 ppsc->reg_rfps_level |= RT_RF_PS_LEVEL_ALWAYS_ASPM; 106 break; 107 } 108 109 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_HALT_NIC; 110 111 /*Update Radio OFF setting */ 112 switch (rtlpci->const_hwsw_rfoff_d3) { 113 case 1: 114 if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM) 115 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_ASPM; 116 break; 117 118 case 2: 119 if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM) 120 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_ASPM; 121 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_HALT_NIC; 122 break; 123 124 case 3: 125 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_PCI_D3; 126 break; 127 } 128 129 /*Set HW definition to determine if it supports ASPM. */ 130 switch (rtlpci->const_support_pciaspm) { 131 case 0: 132 /*Not support ASPM. */ 133 ppsc->support_aspm = false; 134 break; 135 case 1: 136 /*Support ASPM. */ 137 ppsc->support_aspm = true; 138 ppsc->support_backdoor = true; 139 break; 140 case 2: 141 /*ASPM value set by chipset. */ 142 if (pcibridge_vendor == PCI_BRIDGE_VENDOR_INTEL) 143 ppsc->support_aspm = true; 144 break; 145 default: 146 pr_err("switch case %#x not processed\n", 147 rtlpci->const_support_pciaspm); 148 break; 149 } 150 151 /* toshiba aspm issue, toshiba will set aspm selfly 152 * so we should not set aspm in driver 153 */ 154 pci_read_config_byte(rtlpci->pdev, 0x80, &init_aspm); 155 if (rtlpriv->rtlhal.hw_type == HARDWARE_TYPE_RTL8192SE && 156 init_aspm == 0x43) 157 ppsc->support_aspm = false; 158 } 159 160 static bool _rtl_pci_platform_switch_device_pci_aspm( 161 struct ieee80211_hw *hw, 162 u8 value) 163 { 164 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 165 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); 166 167 if (rtlhal->hw_type != HARDWARE_TYPE_RTL8192SE) 168 value |= 0x40; 169 170 pci_write_config_byte(rtlpci->pdev, 0x80, value); 171 172 return false; 173 } 174 175 /*When we set 0x01 to enable clk request. Set 0x0 to disable clk req.*/ 176 static void _rtl_pci_switch_clk_req(struct ieee80211_hw *hw, u8 value) 177 { 178 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 179 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); 180 181 pci_write_config_byte(rtlpci->pdev, 0x81, value); 182 183 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE) 184 udelay(100); 185 } 186 187 /*Disable RTL8192SE ASPM & Disable Pci Bridge ASPM*/ 188 static void rtl_pci_disable_aspm(struct ieee80211_hw *hw) 189 { 190 struct rtl_priv *rtlpriv = rtl_priv(hw); 191 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); 192 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); 193 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 194 u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor; 195 u8 num4bytes = pcipriv->ndis_adapter.num4bytes; 196 /*Retrieve original configuration settings. */ 197 u8 linkctrl_reg = pcipriv->ndis_adapter.linkctrl_reg; 198 u16 pcibridge_linkctrlreg = pcipriv->ndis_adapter. 199 pcibridge_linkctrlreg; 200 u16 aspmlevel = 0; 201 u8 tmp_u1b = 0; 202 203 if (!ppsc->support_aspm) 204 return; 205 206 if (pcibridge_vendor == PCI_BRIDGE_VENDOR_UNKNOWN) { 207 rtl_dbg(rtlpriv, COMP_POWER, DBG_TRACE, 208 "PCI(Bridge) UNKNOWN\n"); 209 210 return; 211 } 212 213 if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_CLK_REQ) { 214 RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_CLK_REQ); 215 _rtl_pci_switch_clk_req(hw, 0x0); 216 } 217 218 /*for promising device will in L0 state after an I/O. */ 219 pci_read_config_byte(rtlpci->pdev, 0x80, &tmp_u1b); 220 221 /*Set corresponding value. */ 222 aspmlevel |= BIT(0) | BIT(1); 223 linkctrl_reg &= ~aspmlevel; 224 pcibridge_linkctrlreg &= ~(BIT(0) | BIT(1)); 225 226 _rtl_pci_platform_switch_device_pci_aspm(hw, linkctrl_reg); 227 udelay(50); 228 229 /*4 Disable Pci Bridge ASPM */ 230 pci_write_config_byte(rtlpci->pdev, (num4bytes << 2), 231 pcibridge_linkctrlreg); 232 233 udelay(50); 234 } 235 236 /*Enable RTL8192SE ASPM & Enable Pci Bridge ASPM for 237 *power saving We should follow the sequence to enable 238 *RTL8192SE first then enable Pci Bridge ASPM 239 *or the system will show bluescreen. 240 */ 241 static void rtl_pci_enable_aspm(struct ieee80211_hw *hw) 242 { 243 struct rtl_priv *rtlpriv = rtl_priv(hw); 244 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); 245 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); 246 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 247 u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor; 248 u8 num4bytes = pcipriv->ndis_adapter.num4bytes; 249 u16 aspmlevel; 250 u8 u_pcibridge_aspmsetting; 251 u8 u_device_aspmsetting; 252 253 if (!ppsc->support_aspm) 254 return; 255 256 if (pcibridge_vendor == PCI_BRIDGE_VENDOR_UNKNOWN) { 257 rtl_dbg(rtlpriv, COMP_POWER, DBG_TRACE, 258 "PCI(Bridge) UNKNOWN\n"); 259 return; 260 } 261 262 /*4 Enable Pci Bridge ASPM */ 263 264 u_pcibridge_aspmsetting = 265 pcipriv->ndis_adapter.pcibridge_linkctrlreg | 266 rtlpci->const_hostpci_aspm_setting; 267 268 if (pcibridge_vendor == PCI_BRIDGE_VENDOR_INTEL) 269 u_pcibridge_aspmsetting &= ~BIT(0); 270 271 pci_write_config_byte(rtlpci->pdev, (num4bytes << 2), 272 u_pcibridge_aspmsetting); 273 274 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, 275 "PlatformEnableASPM(): Write reg[%x] = %x\n", 276 (pcipriv->ndis_adapter.pcibridge_pciehdr_offset + 0x10), 277 u_pcibridge_aspmsetting); 278 279 udelay(50); 280 281 /*Get ASPM level (with/without Clock Req) */ 282 aspmlevel = rtlpci->const_devicepci_aspm_setting; 283 u_device_aspmsetting = pcipriv->ndis_adapter.linkctrl_reg; 284 285 /*_rtl_pci_platform_switch_device_pci_aspm(dev,*/ 286 /*(priv->ndis_adapter.linkctrl_reg | ASPMLevel)); */ 287 288 u_device_aspmsetting |= aspmlevel; 289 290 _rtl_pci_platform_switch_device_pci_aspm(hw, u_device_aspmsetting); 291 292 if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_CLK_REQ) { 293 _rtl_pci_switch_clk_req(hw, (ppsc->reg_rfps_level & 294 RT_RF_OFF_LEVL_CLK_REQ) ? 1 : 0); 295 RT_SET_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_CLK_REQ); 296 } 297 udelay(100); 298 } 299 300 static bool rtl_pci_get_amd_l1_patch(struct ieee80211_hw *hw) 301 { 302 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 303 304 bool status = false; 305 u8 offset_e0; 306 unsigned int offset_e4; 307 308 pci_write_config_byte(rtlpci->pdev, 0xe0, 0xa0); 309 310 pci_read_config_byte(rtlpci->pdev, 0xe0, &offset_e0); 311 312 if (offset_e0 == 0xA0) { 313 pci_read_config_dword(rtlpci->pdev, 0xe4, &offset_e4); 314 if (offset_e4 & BIT(23)) 315 status = true; 316 } 317 318 return status; 319 } 320 321 static bool rtl_pci_check_buddy_priv(struct ieee80211_hw *hw, 322 struct rtl_priv **buddy_priv) 323 { 324 struct rtl_priv *rtlpriv = rtl_priv(hw); 325 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); 326 struct rtl_priv *tpriv = NULL, *iter; 327 struct rtl_pci_priv *tpcipriv = NULL; 328 329 if (!list_empty(&rtlpriv->glb_var->glb_priv_list)) { 330 list_for_each_entry(iter, &rtlpriv->glb_var->glb_priv_list, 331 list) { 332 tpcipriv = (struct rtl_pci_priv *)iter->priv; 333 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, 334 "pcipriv->ndis_adapter.funcnumber %x\n", 335 pcipriv->ndis_adapter.funcnumber); 336 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, 337 "tpcipriv->ndis_adapter.funcnumber %x\n", 338 tpcipriv->ndis_adapter.funcnumber); 339 340 if (pcipriv->ndis_adapter.busnumber == 341 tpcipriv->ndis_adapter.busnumber && 342 pcipriv->ndis_adapter.devnumber == 343 tpcipriv->ndis_adapter.devnumber && 344 pcipriv->ndis_adapter.funcnumber != 345 tpcipriv->ndis_adapter.funcnumber) { 346 tpriv = iter; 347 break; 348 } 349 } 350 } 351 352 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, 353 "find_buddy_priv %d\n", tpriv != NULL); 354 355 if (tpriv) 356 *buddy_priv = tpriv; 357 358 return tpriv != NULL; 359 } 360 361 static void rtl_pci_get_linkcontrol_field(struct ieee80211_hw *hw) 362 { 363 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); 364 struct rtl_pci *rtlpci = rtl_pcidev(pcipriv); 365 u8 capabilityoffset = pcipriv->ndis_adapter.pcibridge_pciehdr_offset; 366 u8 linkctrl_reg; 367 u8 num4bbytes; 368 369 num4bbytes = (capabilityoffset + 0x10) / 4; 370 371 /*Read Link Control Register */ 372 pci_read_config_byte(rtlpci->pdev, (num4bbytes << 2), &linkctrl_reg); 373 374 pcipriv->ndis_adapter.pcibridge_linkctrlreg = linkctrl_reg; 375 } 376 377 static void rtl_pci_parse_configuration(struct pci_dev *pdev, 378 struct ieee80211_hw *hw) 379 { 380 struct rtl_priv *rtlpriv = rtl_priv(hw); 381 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); 382 383 u8 tmp; 384 u16 linkctrl_reg; 385 386 /*Link Control Register */ 387 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &linkctrl_reg); 388 pcipriv->ndis_adapter.linkctrl_reg = (u8)linkctrl_reg; 389 390 rtl_dbg(rtlpriv, COMP_INIT, DBG_TRACE, "Link Control Register =%x\n", 391 pcipriv->ndis_adapter.linkctrl_reg); 392 393 pci_read_config_byte(pdev, 0x98, &tmp); 394 tmp |= BIT(4); 395 pci_write_config_byte(pdev, 0x98, tmp); 396 397 tmp = 0x17; 398 pci_write_config_byte(pdev, 0x70f, tmp); 399 } 400 401 static void rtl_pci_init_aspm(struct ieee80211_hw *hw) 402 { 403 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); 404 405 _rtl_pci_update_default_setting(hw); 406 407 if (ppsc->reg_rfps_level & RT_RF_PS_LEVEL_ALWAYS_ASPM) { 408 /*Always enable ASPM & Clock Req. */ 409 rtl_pci_enable_aspm(hw); 410 RT_SET_PS_LEVEL(ppsc, RT_RF_PS_LEVEL_ALWAYS_ASPM); 411 } 412 } 413 414 static void _rtl_pci_io_handler_init(struct device *dev, 415 struct ieee80211_hw *hw) 416 { 417 struct rtl_priv *rtlpriv = rtl_priv(hw); 418 419 rtlpriv->io.dev = dev; 420 421 rtlpriv->io.write8_async = pci_write8_async; 422 rtlpriv->io.write16_async = pci_write16_async; 423 rtlpriv->io.write32_async = pci_write32_async; 424 425 rtlpriv->io.read8_sync = pci_read8_sync; 426 rtlpriv->io.read16_sync = pci_read16_sync; 427 rtlpriv->io.read32_sync = pci_read32_sync; 428 } 429 430 static bool _rtl_update_earlymode_info(struct ieee80211_hw *hw, 431 struct sk_buff *skb, 432 struct rtl_tcb_desc *tcb_desc, u8 tid) 433 { 434 struct rtl_priv *rtlpriv = rtl_priv(hw); 435 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 436 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); 437 struct sk_buff *next_skb; 438 u8 additionlen = FCS_LEN; 439 440 /* here open is 4, wep/tkip is 8, aes is 12*/ 441 if (info->control.hw_key) 442 additionlen += info->control.hw_key->icv_len; 443 444 /* The most skb num is 6 */ 445 tcb_desc->empkt_num = 0; 446 spin_lock_bh(&rtlpriv->locks.waitq_lock); 447 skb_queue_walk(&rtlpriv->mac80211.skb_waitq[tid], next_skb) { 448 struct ieee80211_tx_info *next_info; 449 450 next_info = IEEE80211_SKB_CB(next_skb); 451 if (next_info->flags & IEEE80211_TX_CTL_AMPDU) { 452 tcb_desc->empkt_len[tcb_desc->empkt_num] = 453 next_skb->len + additionlen; 454 tcb_desc->empkt_num++; 455 } else { 456 break; 457 } 458 459 if (skb_queue_is_last(&rtlpriv->mac80211.skb_waitq[tid], 460 next_skb)) 461 break; 462 463 if (tcb_desc->empkt_num >= rtlhal->max_earlymode_num) 464 break; 465 } 466 spin_unlock_bh(&rtlpriv->locks.waitq_lock); 467 468 return true; 469 } 470 471 /* just for early mode now */ 472 static void _rtl_pci_tx_chk_waitq(struct ieee80211_hw *hw) 473 { 474 struct rtl_priv *rtlpriv = rtl_priv(hw); 475 struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); 476 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 477 struct sk_buff *skb = NULL; 478 struct ieee80211_tx_info *info = NULL; 479 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); 480 int tid; 481 482 if (!rtlpriv->rtlhal.earlymode_enable) 483 return; 484 485 if (rtlpriv->dm.supp_phymode_switch && 486 (rtlpriv->easy_concurrent_ctl.switch_in_process || 487 (rtlpriv->buddy_priv && 488 rtlpriv->buddy_priv->easy_concurrent_ctl.switch_in_process))) 489 return; 490 /* we just use em for BE/BK/VI/VO */ 491 for (tid = 7; tid >= 0; tid--) { 492 u8 hw_queue = ac_to_hwq[rtl_tid_to_ac(tid)]; 493 struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[hw_queue]; 494 495 while (!mac->act_scanning && 496 rtlpriv->psc.rfpwr_state == ERFON) { 497 struct rtl_tcb_desc tcb_desc; 498 499 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc)); 500 501 spin_lock(&rtlpriv->locks.waitq_lock); 502 if (!skb_queue_empty(&mac->skb_waitq[tid]) && 503 (ring->entries - skb_queue_len(&ring->queue) > 504 rtlhal->max_earlymode_num)) { 505 skb = skb_dequeue(&mac->skb_waitq[tid]); 506 } else { 507 spin_unlock(&rtlpriv->locks.waitq_lock); 508 break; 509 } 510 spin_unlock(&rtlpriv->locks.waitq_lock); 511 512 /* Some macaddr can't do early mode. like 513 * multicast/broadcast/no_qos data 514 */ 515 info = IEEE80211_SKB_CB(skb); 516 if (info->flags & IEEE80211_TX_CTL_AMPDU) 517 _rtl_update_earlymode_info(hw, skb, 518 &tcb_desc, tid); 519 520 rtlpriv->intf_ops->adapter_tx(hw, NULL, skb, &tcb_desc); 521 } 522 } 523 } 524 525 static void _rtl_pci_tx_isr(struct ieee80211_hw *hw, int prio) 526 { 527 struct rtl_priv *rtlpriv = rtl_priv(hw); 528 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 529 530 struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[prio]; 531 532 while (skb_queue_len(&ring->queue)) { 533 struct sk_buff *skb; 534 struct ieee80211_tx_info *info; 535 __le16 fc; 536 u8 tid; 537 u8 *entry; 538 539 if (rtlpriv->use_new_trx_flow) 540 entry = (u8 *)(&ring->buffer_desc[ring->idx]); 541 else 542 entry = (u8 *)(&ring->desc[ring->idx]); 543 544 if (!rtlpriv->cfg->ops->is_tx_desc_closed(hw, prio, ring->idx)) 545 return; 546 ring->idx = (ring->idx + 1) % ring->entries; 547 548 skb = __skb_dequeue(&ring->queue); 549 dma_unmap_single(&rtlpci->pdev->dev, 550 rtlpriv->cfg->ops->get_desc(hw, (u8 *)entry, 551 true, HW_DESC_TXBUFF_ADDR), 552 skb->len, DMA_TO_DEVICE); 553 554 /* remove early mode header */ 555 if (rtlpriv->rtlhal.earlymode_enable) 556 skb_pull(skb, EM_HDR_LEN); 557 558 rtl_dbg(rtlpriv, (COMP_INTR | COMP_SEND), DBG_TRACE, 559 "new ring->idx:%d, free: skb_queue_len:%d, free: seq:%x\n", 560 ring->idx, 561 skb_queue_len(&ring->queue), 562 *(u16 *)(skb->data + 22)); 563 564 if (prio == TXCMD_QUEUE) { 565 dev_kfree_skb(skb); 566 goto tx_status_ok; 567 } 568 569 /* for sw LPS, just after NULL skb send out, we can 570 * sure AP knows we are sleeping, we should not let 571 * rf sleep 572 */ 573 fc = rtl_get_fc(skb); 574 if (ieee80211_is_nullfunc(fc)) { 575 if (ieee80211_has_pm(fc)) { 576 rtlpriv->mac80211.offchan_delay = true; 577 rtlpriv->psc.state_inap = true; 578 } else { 579 rtlpriv->psc.state_inap = false; 580 } 581 } 582 if (ieee80211_is_action(fc)) { 583 struct ieee80211_mgmt *action_frame = 584 (struct ieee80211_mgmt *)skb->data; 585 if (action_frame->u.action.u.ht_smps.action == 586 WLAN_HT_ACTION_SMPS) { 587 dev_kfree_skb(skb); 588 goto tx_status_ok; 589 } 590 } 591 592 /* update tid tx pkt num */ 593 tid = rtl_get_tid(skb); 594 if (tid <= 7) 595 rtlpriv->link_info.tidtx_inperiod[tid]++; 596 597 info = IEEE80211_SKB_CB(skb); 598 599 if (likely(!ieee80211_is_nullfunc(fc))) { 600 ieee80211_tx_info_clear_status(info); 601 info->flags |= IEEE80211_TX_STAT_ACK; 602 /*info->status.rates[0].count = 1; */ 603 ieee80211_tx_status_irqsafe(hw, skb); 604 } else { 605 rtl_tx_ackqueue(hw, skb); 606 } 607 608 if ((ring->entries - skb_queue_len(&ring->queue)) <= 4) { 609 rtl_dbg(rtlpriv, COMP_ERR, DBG_DMESG, 610 "more desc left, wake skb_queue@%d, ring->idx = %d, skb_queue_len = 0x%x\n", 611 prio, ring->idx, 612 skb_queue_len(&ring->queue)); 613 614 ieee80211_wake_queue(hw, skb_get_queue_mapping(skb)); 615 } 616 tx_status_ok: 617 skb = NULL; 618 } 619 620 if (((rtlpriv->link_info.num_rx_inperiod + 621 rtlpriv->link_info.num_tx_inperiod) > 8) || 622 rtlpriv->link_info.num_rx_inperiod > 2) 623 rtl_lps_leave(hw, false); 624 } 625 626 static int _rtl_pci_init_one_rxdesc(struct ieee80211_hw *hw, 627 struct sk_buff *new_skb, u8 *entry, 628 int rxring_idx, int desc_idx) 629 { 630 struct rtl_priv *rtlpriv = rtl_priv(hw); 631 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 632 u32 bufferaddress; 633 u8 tmp_one = 1; 634 struct sk_buff *skb; 635 636 if (likely(new_skb)) { 637 skb = new_skb; 638 goto remap; 639 } 640 skb = dev_alloc_skb(rtlpci->rxbuffersize); 641 if (!skb) 642 return 0; 643 644 remap: 645 /* just set skb->cb to mapping addr for pci_unmap_single use */ 646 *((dma_addr_t *)skb->cb) = 647 dma_map_single(&rtlpci->pdev->dev, skb_tail_pointer(skb), 648 rtlpci->rxbuffersize, DMA_FROM_DEVICE); 649 bufferaddress = *((dma_addr_t *)skb->cb); 650 if (dma_mapping_error(&rtlpci->pdev->dev, bufferaddress)) 651 return 0; 652 rtlpci->rx_ring[rxring_idx].rx_buf[desc_idx] = skb; 653 if (rtlpriv->use_new_trx_flow) { 654 /* skb->cb may be 64 bit address */ 655 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false, 656 HW_DESC_RX_PREPARE, 657 (u8 *)(dma_addr_t *)skb->cb); 658 } else { 659 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false, 660 HW_DESC_RXBUFF_ADDR, 661 (u8 *)&bufferaddress); 662 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false, 663 HW_DESC_RXPKT_LEN, 664 (u8 *)&rtlpci->rxbuffersize); 665 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false, 666 HW_DESC_RXOWN, 667 (u8 *)&tmp_one); 668 } 669 return 1; 670 } 671 672 /* inorder to receive 8K AMSDU we have set skb to 673 * 9100bytes in init rx ring, but if this packet is 674 * not a AMSDU, this large packet will be sent to 675 * TCP/IP directly, this cause big packet ping fail 676 * like: "ping -s 65507", so here we will realloc skb 677 * based on the true size of packet, Mac80211 678 * Probably will do it better, but does not yet. 679 * 680 * Some platform will fail when alloc skb sometimes. 681 * in this condition, we will send the old skb to 682 * mac80211 directly, this will not cause any other 683 * issues, but only this packet will be lost by TCP/IP 684 */ 685 static void _rtl_pci_rx_to_mac80211(struct ieee80211_hw *hw, 686 struct sk_buff *skb, 687 struct ieee80211_rx_status rx_status) 688 { 689 if (unlikely(!rtl_action_proc(hw, skb, false))) { 690 dev_kfree_skb_any(skb); 691 } else { 692 struct sk_buff *uskb = NULL; 693 694 uskb = dev_alloc_skb(skb->len + 128); 695 if (likely(uskb)) { 696 memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status, 697 sizeof(rx_status)); 698 skb_put_data(uskb, skb->data, skb->len); 699 dev_kfree_skb_any(skb); 700 ieee80211_rx_irqsafe(hw, uskb); 701 } else { 702 ieee80211_rx_irqsafe(hw, skb); 703 } 704 } 705 } 706 707 /*hsisr interrupt handler*/ 708 static void _rtl_pci_hs_interrupt(struct ieee80211_hw *hw) 709 { 710 struct rtl_priv *rtlpriv = rtl_priv(hw); 711 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 712 713 rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[MAC_HSISR], 714 rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[MAC_HSISR]) | 715 rtlpci->sys_irq_mask); 716 } 717 718 static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw) 719 { 720 struct rtl_priv *rtlpriv = rtl_priv(hw); 721 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 722 int rxring_idx = RTL_PCI_RX_MPDU_QUEUE; 723 struct ieee80211_rx_status rx_status = { 0 }; 724 unsigned int count = rtlpci->rxringcount; 725 u8 own; 726 u8 tmp_one; 727 bool unicast = false; 728 u8 hw_queue = 0; 729 unsigned int rx_remained_cnt = 0; 730 struct rtl_stats stats = { 731 .signal = 0, 732 .rate = 0, 733 }; 734 735 /*RX NORMAL PKT */ 736 while (count--) { 737 struct ieee80211_hdr *hdr; 738 __le16 fc; 739 u16 len; 740 /*rx buffer descriptor */ 741 struct rtl_rx_buffer_desc *buffer_desc = NULL; 742 /*if use new trx flow, it means wifi info */ 743 struct rtl_rx_desc *pdesc = NULL; 744 /*rx pkt */ 745 struct sk_buff *skb = rtlpci->rx_ring[rxring_idx].rx_buf[ 746 rtlpci->rx_ring[rxring_idx].idx]; 747 struct sk_buff *new_skb; 748 749 if (rtlpriv->use_new_trx_flow) { 750 if (rx_remained_cnt == 0) 751 rx_remained_cnt = 752 rtlpriv->cfg->ops->rx_desc_buff_remained_cnt(hw, 753 hw_queue); 754 if (rx_remained_cnt == 0) 755 return; 756 buffer_desc = &rtlpci->rx_ring[rxring_idx].buffer_desc[ 757 rtlpci->rx_ring[rxring_idx].idx]; 758 pdesc = (struct rtl_rx_desc *)skb->data; 759 } else { /* rx descriptor */ 760 pdesc = &rtlpci->rx_ring[rxring_idx].desc[ 761 rtlpci->rx_ring[rxring_idx].idx]; 762 763 own = (u8)rtlpriv->cfg->ops->get_desc(hw, (u8 *)pdesc, 764 false, 765 HW_DESC_OWN); 766 if (own) /* wait data to be filled by hardware */ 767 return; 768 } 769 770 /* Reaching this point means: data is filled already 771 * AAAAAAttention !!! 772 * We can NOT access 'skb' before 'pci_unmap_single' 773 */ 774 dma_unmap_single(&rtlpci->pdev->dev, *((dma_addr_t *)skb->cb), 775 rtlpci->rxbuffersize, DMA_FROM_DEVICE); 776 777 /* get a new skb - if fail, old one will be reused */ 778 new_skb = dev_alloc_skb(rtlpci->rxbuffersize); 779 if (unlikely(!new_skb)) 780 goto no_new; 781 memset(&rx_status, 0, sizeof(rx_status)); 782 rtlpriv->cfg->ops->query_rx_desc(hw, &stats, 783 &rx_status, (u8 *)pdesc, skb); 784 785 if (rtlpriv->use_new_trx_flow) 786 rtlpriv->cfg->ops->rx_check_dma_ok(hw, 787 (u8 *)buffer_desc, 788 hw_queue); 789 790 len = rtlpriv->cfg->ops->get_desc(hw, (u8 *)pdesc, false, 791 HW_DESC_RXPKT_LEN); 792 793 if (skb->end - skb->tail > len) { 794 skb_put(skb, len); 795 if (rtlpriv->use_new_trx_flow) 796 skb_reserve(skb, stats.rx_drvinfo_size + 797 stats.rx_bufshift + 24); 798 else 799 skb_reserve(skb, stats.rx_drvinfo_size + 800 stats.rx_bufshift); 801 } else { 802 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, 803 "skb->end - skb->tail = %d, len is %d\n", 804 skb->end - skb->tail, len); 805 dev_kfree_skb_any(skb); 806 goto new_trx_end; 807 } 808 /* handle command packet here */ 809 if (stats.packet_report_type == C2H_PACKET) { 810 rtl_c2hcmd_enqueue(hw, skb); 811 goto new_trx_end; 812 } 813 814 /* NOTICE This can not be use for mac80211, 815 * this is done in mac80211 code, 816 * if done here sec DHCP will fail 817 * skb_trim(skb, skb->len - 4); 818 */ 819 820 hdr = rtl_get_hdr(skb); 821 fc = rtl_get_fc(skb); 822 823 if (!stats.crc && !stats.hwerror && (skb->len > FCS_LEN)) { 824 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, 825 sizeof(rx_status)); 826 827 if (is_broadcast_ether_addr(hdr->addr1)) { 828 ;/*TODO*/ 829 } else if (is_multicast_ether_addr(hdr->addr1)) { 830 ;/*TODO*/ 831 } else { 832 unicast = true; 833 rtlpriv->stats.rxbytesunicast += skb->len; 834 } 835 rtl_is_special_data(hw, skb, false, true); 836 837 if (ieee80211_is_data(fc)) { 838 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX); 839 if (unicast) 840 rtlpriv->link_info.num_rx_inperiod++; 841 } 842 843 rtl_collect_scan_list(hw, skb); 844 845 /* static bcn for roaming */ 846 rtl_beacon_statistic(hw, skb); 847 rtl_p2p_info(hw, (void *)skb->data, skb->len); 848 /* for sw lps */ 849 rtl_swlps_beacon(hw, (void *)skb->data, skb->len); 850 rtl_recognize_peer(hw, (void *)skb->data, skb->len); 851 if (rtlpriv->mac80211.opmode == NL80211_IFTYPE_AP && 852 rtlpriv->rtlhal.current_bandtype == BAND_ON_2_4G && 853 (ieee80211_is_beacon(fc) || 854 ieee80211_is_probe_resp(fc))) { 855 dev_kfree_skb_any(skb); 856 } else { 857 _rtl_pci_rx_to_mac80211(hw, skb, rx_status); 858 } 859 } else { 860 /* drop packets with errors or those too short */ 861 dev_kfree_skb_any(skb); 862 } 863 new_trx_end: 864 if (rtlpriv->use_new_trx_flow) { 865 rtlpci->rx_ring[hw_queue].next_rx_rp += 1; 866 rtlpci->rx_ring[hw_queue].next_rx_rp %= 867 RTL_PCI_MAX_RX_COUNT; 868 869 rx_remained_cnt--; 870 rtl_write_word(rtlpriv, 0x3B4, 871 rtlpci->rx_ring[hw_queue].next_rx_rp); 872 } 873 if (((rtlpriv->link_info.num_rx_inperiod + 874 rtlpriv->link_info.num_tx_inperiod) > 8) || 875 rtlpriv->link_info.num_rx_inperiod > 2) 876 rtl_lps_leave(hw, false); 877 skb = new_skb; 878 no_new: 879 if (rtlpriv->use_new_trx_flow) { 880 _rtl_pci_init_one_rxdesc(hw, skb, (u8 *)buffer_desc, 881 rxring_idx, 882 rtlpci->rx_ring[rxring_idx].idx); 883 } else { 884 _rtl_pci_init_one_rxdesc(hw, skb, (u8 *)pdesc, 885 rxring_idx, 886 rtlpci->rx_ring[rxring_idx].idx); 887 if (rtlpci->rx_ring[rxring_idx].idx == 888 rtlpci->rxringcount - 1) 889 rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, 890 false, 891 HW_DESC_RXERO, 892 (u8 *)&tmp_one); 893 } 894 rtlpci->rx_ring[rxring_idx].idx = 895 (rtlpci->rx_ring[rxring_idx].idx + 1) % 896 rtlpci->rxringcount; 897 } 898 } 899 900 static irqreturn_t _rtl_pci_interrupt(int irq, void *dev_id) 901 { 902 struct ieee80211_hw *hw = dev_id; 903 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 904 struct rtl_priv *rtlpriv = rtl_priv(hw); 905 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); 906 unsigned long flags; 907 struct rtl_int intvec = {0}; 908 909 irqreturn_t ret = IRQ_HANDLED; 910 911 if (rtlpci->irq_enabled == 0) 912 return ret; 913 914 spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags); 915 rtlpriv->cfg->ops->disable_interrupt(hw); 916 917 /*read ISR: 4/8bytes */ 918 rtlpriv->cfg->ops->interrupt_recognized(hw, &intvec); 919 920 /*Shared IRQ or HW disappeared */ 921 if (!intvec.inta || intvec.inta == 0xffff) 922 goto done; 923 924 /*<1> beacon related */ 925 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_TBDOK]) 926 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, 927 "beacon ok interrupt!\n"); 928 929 if (unlikely(intvec.inta & rtlpriv->cfg->maps[RTL_IMR_TBDER])) 930 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, 931 "beacon err interrupt!\n"); 932 933 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_BDOK]) 934 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, "beacon interrupt!\n"); 935 936 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_BCNINT]) { 937 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, 938 "prepare beacon for interrupt!\n"); 939 tasklet_schedule(&rtlpriv->works.irq_prepare_bcn_tasklet); 940 } 941 942 /*<2> Tx related */ 943 if (unlikely(intvec.intb & rtlpriv->cfg->maps[RTL_IMR_TXFOVW])) 944 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, "IMR_TXFOVW!\n"); 945 946 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_MGNTDOK]) { 947 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, 948 "Manage ok interrupt!\n"); 949 _rtl_pci_tx_isr(hw, MGNT_QUEUE); 950 } 951 952 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_HIGHDOK]) { 953 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, 954 "HIGH_QUEUE ok interrupt!\n"); 955 _rtl_pci_tx_isr(hw, HIGH_QUEUE); 956 } 957 958 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_BKDOK]) { 959 rtlpriv->link_info.num_tx_inperiod++; 960 961 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, 962 "BK Tx OK interrupt!\n"); 963 _rtl_pci_tx_isr(hw, BK_QUEUE); 964 } 965 966 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_BEDOK]) { 967 rtlpriv->link_info.num_tx_inperiod++; 968 969 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, 970 "BE TX OK interrupt!\n"); 971 _rtl_pci_tx_isr(hw, BE_QUEUE); 972 } 973 974 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_VIDOK]) { 975 rtlpriv->link_info.num_tx_inperiod++; 976 977 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, 978 "VI TX OK interrupt!\n"); 979 _rtl_pci_tx_isr(hw, VI_QUEUE); 980 } 981 982 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_VODOK]) { 983 rtlpriv->link_info.num_tx_inperiod++; 984 985 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, 986 "Vo TX OK interrupt!\n"); 987 _rtl_pci_tx_isr(hw, VO_QUEUE); 988 } 989 990 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8822BE) { 991 if (intvec.intd & rtlpriv->cfg->maps[RTL_IMR_H2CDOK]) { 992 rtlpriv->link_info.num_tx_inperiod++; 993 994 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, 995 "H2C TX OK interrupt!\n"); 996 _rtl_pci_tx_isr(hw, H2C_QUEUE); 997 } 998 } 999 1000 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE) { 1001 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_COMDOK]) { 1002 rtlpriv->link_info.num_tx_inperiod++; 1003 1004 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, 1005 "CMD TX OK interrupt!\n"); 1006 _rtl_pci_tx_isr(hw, TXCMD_QUEUE); 1007 } 1008 } 1009 1010 /*<3> Rx related */ 1011 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_ROK]) { 1012 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, "Rx ok interrupt!\n"); 1013 _rtl_pci_rx_interrupt(hw); 1014 } 1015 1016 if (unlikely(intvec.inta & rtlpriv->cfg->maps[RTL_IMR_RDU])) { 1017 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, 1018 "rx descriptor unavailable!\n"); 1019 _rtl_pci_rx_interrupt(hw); 1020 } 1021 1022 if (unlikely(intvec.intb & rtlpriv->cfg->maps[RTL_IMR_RXFOVW])) { 1023 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, "rx overflow !\n"); 1024 _rtl_pci_rx_interrupt(hw); 1025 } 1026 1027 /*<4> fw related*/ 1028 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8723AE) { 1029 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_C2HCMD]) { 1030 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, 1031 "firmware interrupt!\n"); 1032 queue_delayed_work(rtlpriv->works.rtl_wq, 1033 &rtlpriv->works.fwevt_wq, 0); 1034 } 1035 } 1036 1037 /*<5> hsisr related*/ 1038 /* Only 8188EE & 8723BE Supported. 1039 * If Other ICs Come in, System will corrupt, 1040 * because maps[RTL_IMR_HSISR_IND] & maps[MAC_HSISR] 1041 * are not initialized 1042 */ 1043 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8188EE || 1044 rtlhal->hw_type == HARDWARE_TYPE_RTL8723BE) { 1045 if (unlikely(intvec.inta & 1046 rtlpriv->cfg->maps[RTL_IMR_HSISR_IND])) { 1047 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, 1048 "hsisr interrupt!\n"); 1049 _rtl_pci_hs_interrupt(hw); 1050 } 1051 } 1052 1053 if (rtlpriv->rtlhal.earlymode_enable) 1054 tasklet_schedule(&rtlpriv->works.irq_tasklet); 1055 1056 done: 1057 rtlpriv->cfg->ops->enable_interrupt(hw); 1058 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags); 1059 return ret; 1060 } 1061 1062 static void _rtl_pci_irq_tasklet(struct tasklet_struct *t) 1063 { 1064 struct rtl_priv *rtlpriv = from_tasklet(rtlpriv, t, works.irq_tasklet); 1065 struct ieee80211_hw *hw = rtlpriv->hw; 1066 _rtl_pci_tx_chk_waitq(hw); 1067 } 1068 1069 static void _rtl_pci_prepare_bcn_tasklet(struct tasklet_struct *t) 1070 { 1071 struct rtl_priv *rtlpriv = from_tasklet(rtlpriv, t, 1072 works.irq_prepare_bcn_tasklet); 1073 struct ieee80211_hw *hw = rtlpriv->hw; 1074 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 1075 struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); 1076 struct rtl8192_tx_ring *ring = NULL; 1077 struct ieee80211_hdr *hdr = NULL; 1078 struct ieee80211_tx_info *info = NULL; 1079 struct sk_buff *pskb = NULL; 1080 struct rtl_tx_desc *pdesc = NULL; 1081 struct rtl_tcb_desc tcb_desc; 1082 /*This is for new trx flow*/ 1083 struct rtl_tx_buffer_desc *pbuffer_desc = NULL; 1084 u8 temp_one = 1; 1085 u8 *entry; 1086 1087 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc)); 1088 ring = &rtlpci->tx_ring[BEACON_QUEUE]; 1089 pskb = __skb_dequeue(&ring->queue); 1090 if (rtlpriv->use_new_trx_flow) 1091 entry = (u8 *)(&ring->buffer_desc[ring->idx]); 1092 else 1093 entry = (u8 *)(&ring->desc[ring->idx]); 1094 if (pskb) { 1095 dma_unmap_single(&rtlpci->pdev->dev, 1096 rtlpriv->cfg->ops->get_desc(hw, (u8 *)entry, 1097 true, HW_DESC_TXBUFF_ADDR), 1098 pskb->len, DMA_TO_DEVICE); 1099 kfree_skb(pskb); 1100 } 1101 1102 /*NB: the beacon data buffer must be 32-bit aligned. */ 1103 pskb = ieee80211_beacon_get(hw, mac->vif, 0); 1104 if (!pskb) 1105 return; 1106 hdr = rtl_get_hdr(pskb); 1107 info = IEEE80211_SKB_CB(pskb); 1108 pdesc = &ring->desc[0]; 1109 if (rtlpriv->use_new_trx_flow) 1110 pbuffer_desc = &ring->buffer_desc[0]; 1111 1112 rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, 1113 (u8 *)pbuffer_desc, info, NULL, pskb, 1114 BEACON_QUEUE, &tcb_desc); 1115 1116 __skb_queue_tail(&ring->queue, pskb); 1117 1118 if (rtlpriv->use_new_trx_flow) { 1119 temp_one = 4; 1120 rtlpriv->cfg->ops->set_desc(hw, (u8 *)pbuffer_desc, true, 1121 HW_DESC_OWN, (u8 *)&temp_one); 1122 } else { 1123 rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, true, HW_DESC_OWN, 1124 &temp_one); 1125 } 1126 } 1127 1128 static void _rtl_pci_init_trx_var(struct ieee80211_hw *hw) 1129 { 1130 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 1131 struct rtl_priv *rtlpriv = rtl_priv(hw); 1132 struct rtl_hal *rtlhal = rtl_hal(rtlpriv); 1133 u8 i; 1134 u16 desc_num; 1135 1136 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192EE) 1137 desc_num = TX_DESC_NUM_92E; 1138 else if (rtlhal->hw_type == HARDWARE_TYPE_RTL8822BE) 1139 desc_num = TX_DESC_NUM_8822B; 1140 else 1141 desc_num = RT_TXDESC_NUM; 1142 1143 for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) 1144 rtlpci->txringcount[i] = desc_num; 1145 1146 /*we just alloc 2 desc for beacon queue, 1147 *because we just need first desc in hw beacon. 1148 */ 1149 rtlpci->txringcount[BEACON_QUEUE] = 2; 1150 1151 /*BE queue need more descriptor for performance 1152 *consideration or, No more tx desc will happen, 1153 *and may cause mac80211 mem leakage. 1154 */ 1155 if (!rtl_priv(hw)->use_new_trx_flow) 1156 rtlpci->txringcount[BE_QUEUE] = RT_TXDESC_NUM_BE_QUEUE; 1157 1158 rtlpci->rxbuffersize = 9100; /*2048/1024; */ 1159 rtlpci->rxringcount = RTL_PCI_MAX_RX_COUNT; /*64; */ 1160 } 1161 1162 static void _rtl_pci_init_struct(struct ieee80211_hw *hw, 1163 struct pci_dev *pdev) 1164 { 1165 struct rtl_priv *rtlpriv = rtl_priv(hw); 1166 struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); 1167 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 1168 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); 1169 1170 rtlpci->up_first_time = true; 1171 rtlpci->being_init_adapter = false; 1172 1173 rtlhal->hw = hw; 1174 rtlpci->pdev = pdev; 1175 1176 /*Tx/Rx related var */ 1177 _rtl_pci_init_trx_var(hw); 1178 1179 /*IBSS*/ 1180 mac->beacon_interval = 100; 1181 1182 /*AMPDU*/ 1183 mac->min_space_cfg = 0; 1184 mac->max_mss_density = 0; 1185 /*set sane AMPDU defaults */ 1186 mac->current_ampdu_density = 7; 1187 mac->current_ampdu_factor = 3; 1188 1189 /*Retry Limit*/ 1190 mac->retry_short = 7; 1191 mac->retry_long = 7; 1192 1193 /*QOS*/ 1194 rtlpci->acm_method = EACMWAY2_SW; 1195 1196 /*task */ 1197 tasklet_setup(&rtlpriv->works.irq_tasklet, _rtl_pci_irq_tasklet); 1198 tasklet_setup(&rtlpriv->works.irq_prepare_bcn_tasklet, 1199 _rtl_pci_prepare_bcn_tasklet); 1200 INIT_WORK(&rtlpriv->works.lps_change_work, 1201 rtl_lps_change_work_callback); 1202 } 1203 1204 static int _rtl_pci_init_tx_ring(struct ieee80211_hw *hw, 1205 unsigned int prio, unsigned int entries) 1206 { 1207 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 1208 struct rtl_priv *rtlpriv = rtl_priv(hw); 1209 struct rtl_tx_buffer_desc *buffer_desc; 1210 struct rtl_tx_desc *desc; 1211 dma_addr_t buffer_desc_dma, desc_dma; 1212 u32 nextdescaddress; 1213 int i; 1214 1215 /* alloc tx buffer desc for new trx flow*/ 1216 if (rtlpriv->use_new_trx_flow) { 1217 buffer_desc = 1218 dma_alloc_coherent(&rtlpci->pdev->dev, 1219 sizeof(*buffer_desc) * entries, 1220 &buffer_desc_dma, GFP_KERNEL); 1221 1222 if (!buffer_desc || (unsigned long)buffer_desc & 0xFF) { 1223 pr_err("Cannot allocate TX ring (prio = %d)\n", 1224 prio); 1225 return -ENOMEM; 1226 } 1227 1228 rtlpci->tx_ring[prio].buffer_desc = buffer_desc; 1229 rtlpci->tx_ring[prio].buffer_desc_dma = buffer_desc_dma; 1230 1231 rtlpci->tx_ring[prio].cur_tx_rp = 0; 1232 rtlpci->tx_ring[prio].cur_tx_wp = 0; 1233 } 1234 1235 /* alloc dma for this ring */ 1236 desc = dma_alloc_coherent(&rtlpci->pdev->dev, sizeof(*desc) * entries, 1237 &desc_dma, GFP_KERNEL); 1238 1239 if (!desc || (unsigned long)desc & 0xFF) { 1240 pr_err("Cannot allocate TX ring (prio = %d)\n", prio); 1241 return -ENOMEM; 1242 } 1243 1244 rtlpci->tx_ring[prio].desc = desc; 1245 rtlpci->tx_ring[prio].dma = desc_dma; 1246 1247 rtlpci->tx_ring[prio].idx = 0; 1248 rtlpci->tx_ring[prio].entries = entries; 1249 skb_queue_head_init(&rtlpci->tx_ring[prio].queue); 1250 1251 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "queue:%d, ring_addr:%p\n", 1252 prio, desc); 1253 1254 /* init every desc in this ring */ 1255 if (!rtlpriv->use_new_trx_flow) { 1256 for (i = 0; i < entries; i++) { 1257 nextdescaddress = (u32)desc_dma + 1258 ((i + 1) % entries) * 1259 sizeof(*desc); 1260 1261 rtlpriv->cfg->ops->set_desc(hw, (u8 *)&desc[i], 1262 true, 1263 HW_DESC_TX_NEXTDESC_ADDR, 1264 (u8 *)&nextdescaddress); 1265 } 1266 } 1267 return 0; 1268 } 1269 1270 static int _rtl_pci_init_rx_ring(struct ieee80211_hw *hw, int rxring_idx) 1271 { 1272 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 1273 struct rtl_priv *rtlpriv = rtl_priv(hw); 1274 int i; 1275 1276 if (rtlpriv->use_new_trx_flow) { 1277 struct rtl_rx_buffer_desc *entry = NULL; 1278 /* alloc dma for this ring */ 1279 rtlpci->rx_ring[rxring_idx].buffer_desc = 1280 dma_alloc_coherent(&rtlpci->pdev->dev, 1281 sizeof(*rtlpci->rx_ring[rxring_idx].buffer_desc) * 1282 rtlpci->rxringcount, 1283 &rtlpci->rx_ring[rxring_idx].dma, GFP_KERNEL); 1284 if (!rtlpci->rx_ring[rxring_idx].buffer_desc || 1285 (ulong)rtlpci->rx_ring[rxring_idx].buffer_desc & 0xFF) { 1286 pr_err("Cannot allocate RX ring\n"); 1287 return -ENOMEM; 1288 } 1289 1290 /* init every desc in this ring */ 1291 rtlpci->rx_ring[rxring_idx].idx = 0; 1292 for (i = 0; i < rtlpci->rxringcount; i++) { 1293 entry = &rtlpci->rx_ring[rxring_idx].buffer_desc[i]; 1294 if (!_rtl_pci_init_one_rxdesc(hw, NULL, (u8 *)entry, 1295 rxring_idx, i)) 1296 return -ENOMEM; 1297 } 1298 } else { 1299 struct rtl_rx_desc *entry = NULL; 1300 u8 tmp_one = 1; 1301 /* alloc dma for this ring */ 1302 rtlpci->rx_ring[rxring_idx].desc = 1303 dma_alloc_coherent(&rtlpci->pdev->dev, 1304 sizeof(*rtlpci->rx_ring[rxring_idx].desc) * 1305 rtlpci->rxringcount, 1306 &rtlpci->rx_ring[rxring_idx].dma, GFP_KERNEL); 1307 if (!rtlpci->rx_ring[rxring_idx].desc || 1308 (unsigned long)rtlpci->rx_ring[rxring_idx].desc & 0xFF) { 1309 pr_err("Cannot allocate RX ring\n"); 1310 return -ENOMEM; 1311 } 1312 1313 /* init every desc in this ring */ 1314 rtlpci->rx_ring[rxring_idx].idx = 0; 1315 1316 for (i = 0; i < rtlpci->rxringcount; i++) { 1317 entry = &rtlpci->rx_ring[rxring_idx].desc[i]; 1318 if (!_rtl_pci_init_one_rxdesc(hw, NULL, (u8 *)entry, 1319 rxring_idx, i)) 1320 return -ENOMEM; 1321 } 1322 1323 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false, 1324 HW_DESC_RXERO, &tmp_one); 1325 } 1326 return 0; 1327 } 1328 1329 static void _rtl_pci_free_tx_ring(struct ieee80211_hw *hw, 1330 unsigned int prio) 1331 { 1332 struct rtl_priv *rtlpriv = rtl_priv(hw); 1333 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 1334 struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[prio]; 1335 1336 /* free every desc in this ring */ 1337 while (skb_queue_len(&ring->queue)) { 1338 u8 *entry; 1339 struct sk_buff *skb = __skb_dequeue(&ring->queue); 1340 1341 if (rtlpriv->use_new_trx_flow) 1342 entry = (u8 *)(&ring->buffer_desc[ring->idx]); 1343 else 1344 entry = (u8 *)(&ring->desc[ring->idx]); 1345 1346 dma_unmap_single(&rtlpci->pdev->dev, 1347 rtlpriv->cfg->ops->get_desc(hw, (u8 *)entry, 1348 true, HW_DESC_TXBUFF_ADDR), 1349 skb->len, DMA_TO_DEVICE); 1350 kfree_skb(skb); 1351 ring->idx = (ring->idx + 1) % ring->entries; 1352 } 1353 1354 /* free dma of this ring */ 1355 dma_free_coherent(&rtlpci->pdev->dev, 1356 sizeof(*ring->desc) * ring->entries, ring->desc, 1357 ring->dma); 1358 ring->desc = NULL; 1359 if (rtlpriv->use_new_trx_flow) { 1360 dma_free_coherent(&rtlpci->pdev->dev, 1361 sizeof(*ring->buffer_desc) * ring->entries, 1362 ring->buffer_desc, ring->buffer_desc_dma); 1363 ring->buffer_desc = NULL; 1364 } 1365 } 1366 1367 static void _rtl_pci_free_rx_ring(struct ieee80211_hw *hw, int rxring_idx) 1368 { 1369 struct rtl_priv *rtlpriv = rtl_priv(hw); 1370 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 1371 int i; 1372 1373 /* free every desc in this ring */ 1374 for (i = 0; i < rtlpci->rxringcount; i++) { 1375 struct sk_buff *skb = rtlpci->rx_ring[rxring_idx].rx_buf[i]; 1376 1377 if (!skb) 1378 continue; 1379 dma_unmap_single(&rtlpci->pdev->dev, *((dma_addr_t *)skb->cb), 1380 rtlpci->rxbuffersize, DMA_FROM_DEVICE); 1381 kfree_skb(skb); 1382 } 1383 1384 /* free dma of this ring */ 1385 if (rtlpriv->use_new_trx_flow) { 1386 dma_free_coherent(&rtlpci->pdev->dev, 1387 sizeof(*rtlpci->rx_ring[rxring_idx].buffer_desc) * 1388 rtlpci->rxringcount, 1389 rtlpci->rx_ring[rxring_idx].buffer_desc, 1390 rtlpci->rx_ring[rxring_idx].dma); 1391 rtlpci->rx_ring[rxring_idx].buffer_desc = NULL; 1392 } else { 1393 dma_free_coherent(&rtlpci->pdev->dev, 1394 sizeof(*rtlpci->rx_ring[rxring_idx].desc) * 1395 rtlpci->rxringcount, 1396 rtlpci->rx_ring[rxring_idx].desc, 1397 rtlpci->rx_ring[rxring_idx].dma); 1398 rtlpci->rx_ring[rxring_idx].desc = NULL; 1399 } 1400 } 1401 1402 static int _rtl_pci_init_trx_ring(struct ieee80211_hw *hw) 1403 { 1404 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 1405 int ret; 1406 int i, rxring_idx; 1407 1408 /* rxring_idx 0:RX_MPDU_QUEUE 1409 * rxring_idx 1:RX_CMD_QUEUE 1410 */ 1411 for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++) { 1412 ret = _rtl_pci_init_rx_ring(hw, rxring_idx); 1413 if (ret) 1414 return ret; 1415 } 1416 1417 for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) { 1418 ret = _rtl_pci_init_tx_ring(hw, i, rtlpci->txringcount[i]); 1419 if (ret) 1420 goto err_free_rings; 1421 } 1422 1423 return 0; 1424 1425 err_free_rings: 1426 for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++) 1427 _rtl_pci_free_rx_ring(hw, rxring_idx); 1428 1429 for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) 1430 if (rtlpci->tx_ring[i].desc || 1431 rtlpci->tx_ring[i].buffer_desc) 1432 _rtl_pci_free_tx_ring(hw, i); 1433 1434 return 1; 1435 } 1436 1437 static int _rtl_pci_deinit_trx_ring(struct ieee80211_hw *hw) 1438 { 1439 u32 i, rxring_idx; 1440 1441 /*free rx rings */ 1442 for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++) 1443 _rtl_pci_free_rx_ring(hw, rxring_idx); 1444 1445 /*free tx rings */ 1446 for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) 1447 _rtl_pci_free_tx_ring(hw, i); 1448 1449 return 0; 1450 } 1451 1452 int rtl_pci_reset_trx_ring(struct ieee80211_hw *hw) 1453 { 1454 struct rtl_priv *rtlpriv = rtl_priv(hw); 1455 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 1456 int i, rxring_idx; 1457 unsigned long flags; 1458 u8 tmp_one = 1; 1459 u32 bufferaddress; 1460 /* rxring_idx 0:RX_MPDU_QUEUE */ 1461 /* rxring_idx 1:RX_CMD_QUEUE */ 1462 for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++) { 1463 /* force the rx_ring[RX_MPDU_QUEUE/ 1464 * RX_CMD_QUEUE].idx to the first one 1465 *new trx flow, do nothing 1466 */ 1467 if (!rtlpriv->use_new_trx_flow && 1468 rtlpci->rx_ring[rxring_idx].desc) { 1469 struct rtl_rx_desc *entry = NULL; 1470 1471 rtlpci->rx_ring[rxring_idx].idx = 0; 1472 for (i = 0; i < rtlpci->rxringcount; i++) { 1473 entry = &rtlpci->rx_ring[rxring_idx].desc[i]; 1474 bufferaddress = 1475 rtlpriv->cfg->ops->get_desc(hw, (u8 *)entry, 1476 false, HW_DESC_RXBUFF_ADDR); 1477 memset((u8 *)entry, 0, 1478 sizeof(*rtlpci->rx_ring 1479 [rxring_idx].desc));/*clear one entry*/ 1480 if (rtlpriv->use_new_trx_flow) { 1481 rtlpriv->cfg->ops->set_desc(hw, 1482 (u8 *)entry, false, 1483 HW_DESC_RX_PREPARE, 1484 (u8 *)&bufferaddress); 1485 } else { 1486 rtlpriv->cfg->ops->set_desc(hw, 1487 (u8 *)entry, false, 1488 HW_DESC_RXBUFF_ADDR, 1489 (u8 *)&bufferaddress); 1490 rtlpriv->cfg->ops->set_desc(hw, 1491 (u8 *)entry, false, 1492 HW_DESC_RXPKT_LEN, 1493 (u8 *)&rtlpci->rxbuffersize); 1494 rtlpriv->cfg->ops->set_desc(hw, 1495 (u8 *)entry, false, 1496 HW_DESC_RXOWN, 1497 (u8 *)&tmp_one); 1498 } 1499 } 1500 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false, 1501 HW_DESC_RXERO, (u8 *)&tmp_one); 1502 } 1503 rtlpci->rx_ring[rxring_idx].idx = 0; 1504 } 1505 1506 /*after reset, release previous pending packet, 1507 *and force the tx idx to the first one 1508 */ 1509 spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags); 1510 for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) { 1511 if (rtlpci->tx_ring[i].desc || 1512 rtlpci->tx_ring[i].buffer_desc) { 1513 struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[i]; 1514 1515 while (skb_queue_len(&ring->queue)) { 1516 u8 *entry; 1517 struct sk_buff *skb = 1518 __skb_dequeue(&ring->queue); 1519 if (rtlpriv->use_new_trx_flow) 1520 entry = (u8 *)(&ring->buffer_desc 1521 [ring->idx]); 1522 else 1523 entry = (u8 *)(&ring->desc[ring->idx]); 1524 1525 dma_unmap_single(&rtlpci->pdev->dev, 1526 rtlpriv->cfg->ops->get_desc(hw, (u8 *)entry, 1527 true, HW_DESC_TXBUFF_ADDR), 1528 skb->len, DMA_TO_DEVICE); 1529 dev_kfree_skb_irq(skb); 1530 ring->idx = (ring->idx + 1) % ring->entries; 1531 } 1532 1533 if (rtlpriv->use_new_trx_flow) { 1534 rtlpci->tx_ring[i].cur_tx_rp = 0; 1535 rtlpci->tx_ring[i].cur_tx_wp = 0; 1536 } 1537 1538 ring->idx = 0; 1539 ring->entries = rtlpci->txringcount[i]; 1540 } 1541 } 1542 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags); 1543 1544 return 0; 1545 } 1546 1547 static bool rtl_pci_tx_chk_waitq_insert(struct ieee80211_hw *hw, 1548 struct ieee80211_sta *sta, 1549 struct sk_buff *skb) 1550 { 1551 struct rtl_priv *rtlpriv = rtl_priv(hw); 1552 struct rtl_sta_info *sta_entry = NULL; 1553 u8 tid = rtl_get_tid(skb); 1554 __le16 fc = rtl_get_fc(skb); 1555 1556 if (!sta) 1557 return false; 1558 sta_entry = (struct rtl_sta_info *)sta->drv_priv; 1559 1560 if (!rtlpriv->rtlhal.earlymode_enable) 1561 return false; 1562 if (ieee80211_is_nullfunc(fc)) 1563 return false; 1564 if (ieee80211_is_qos_nullfunc(fc)) 1565 return false; 1566 if (ieee80211_is_pspoll(fc)) 1567 return false; 1568 if (sta_entry->tids[tid].agg.agg_state != RTL_AGG_OPERATIONAL) 1569 return false; 1570 if (_rtl_mac_to_hwqueue(hw, skb) > VO_QUEUE) 1571 return false; 1572 if (tid > 7) 1573 return false; 1574 1575 /* maybe every tid should be checked */ 1576 if (!rtlpriv->link_info.higher_busytxtraffic[tid]) 1577 return false; 1578 1579 spin_lock_bh(&rtlpriv->locks.waitq_lock); 1580 skb_queue_tail(&rtlpriv->mac80211.skb_waitq[tid], skb); 1581 spin_unlock_bh(&rtlpriv->locks.waitq_lock); 1582 1583 return true; 1584 } 1585 1586 static int rtl_pci_tx(struct ieee80211_hw *hw, 1587 struct ieee80211_sta *sta, 1588 struct sk_buff *skb, 1589 struct rtl_tcb_desc *ptcb_desc) 1590 { 1591 struct rtl_priv *rtlpriv = rtl_priv(hw); 1592 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 1593 struct rtl8192_tx_ring *ring; 1594 struct rtl_tx_desc *pdesc; 1595 struct rtl_tx_buffer_desc *ptx_bd_desc = NULL; 1596 u16 idx; 1597 u8 hw_queue = _rtl_mac_to_hwqueue(hw, skb); 1598 unsigned long flags; 1599 struct ieee80211_hdr *hdr = rtl_get_hdr(skb); 1600 __le16 fc = rtl_get_fc(skb); 1601 u8 *pda_addr = hdr->addr1; 1602 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 1603 u8 own; 1604 u8 temp_one = 1; 1605 1606 if (ieee80211_is_mgmt(fc)) 1607 rtl_tx_mgmt_proc(hw, skb); 1608 1609 if (rtlpriv->psc.sw_ps_enabled) { 1610 if (ieee80211_is_data(fc) && !ieee80211_is_nullfunc(fc) && 1611 !ieee80211_has_pm(fc)) 1612 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); 1613 } 1614 1615 rtl_action_proc(hw, skb, true); 1616 1617 if (is_multicast_ether_addr(pda_addr)) 1618 rtlpriv->stats.txbytesmulticast += skb->len; 1619 else if (is_broadcast_ether_addr(pda_addr)) 1620 rtlpriv->stats.txbytesbroadcast += skb->len; 1621 else 1622 rtlpriv->stats.txbytesunicast += skb->len; 1623 1624 spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags); 1625 ring = &rtlpci->tx_ring[hw_queue]; 1626 if (hw_queue != BEACON_QUEUE) { 1627 if (rtlpriv->use_new_trx_flow) 1628 idx = ring->cur_tx_wp; 1629 else 1630 idx = (ring->idx + skb_queue_len(&ring->queue)) % 1631 ring->entries; 1632 } else { 1633 idx = 0; 1634 } 1635 1636 pdesc = &ring->desc[idx]; 1637 if (rtlpriv->use_new_trx_flow) { 1638 ptx_bd_desc = &ring->buffer_desc[idx]; 1639 } else { 1640 own = (u8)rtlpriv->cfg->ops->get_desc(hw, (u8 *)pdesc, 1641 true, HW_DESC_OWN); 1642 1643 if (own == 1 && hw_queue != BEACON_QUEUE) { 1644 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, 1645 "No more TX desc@%d, ring->idx = %d, idx = %d, skb_queue_len = 0x%x\n", 1646 hw_queue, ring->idx, idx, 1647 skb_queue_len(&ring->queue)); 1648 1649 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, 1650 flags); 1651 return skb->len; 1652 } 1653 } 1654 1655 if (rtlpriv->cfg->ops->get_available_desc && 1656 rtlpriv->cfg->ops->get_available_desc(hw, hw_queue) == 0) { 1657 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, 1658 "get_available_desc fail\n"); 1659 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags); 1660 return skb->len; 1661 } 1662 1663 if (ieee80211_is_data(fc)) 1664 rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX); 1665 1666 rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, 1667 (u8 *)ptx_bd_desc, info, sta, skb, hw_queue, ptcb_desc); 1668 1669 __skb_queue_tail(&ring->queue, skb); 1670 1671 if (rtlpriv->use_new_trx_flow) { 1672 rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, true, 1673 HW_DESC_OWN, &hw_queue); 1674 } else { 1675 rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, true, 1676 HW_DESC_OWN, &temp_one); 1677 } 1678 1679 if ((ring->entries - skb_queue_len(&ring->queue)) < 2 && 1680 hw_queue != BEACON_QUEUE) { 1681 rtl_dbg(rtlpriv, COMP_ERR, DBG_LOUD, 1682 "less desc left, stop skb_queue@%d, ring->idx = %d, idx = %d, skb_queue_len = 0x%x\n", 1683 hw_queue, ring->idx, idx, 1684 skb_queue_len(&ring->queue)); 1685 1686 ieee80211_stop_queue(hw, skb_get_queue_mapping(skb)); 1687 } 1688 1689 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags); 1690 1691 rtlpriv->cfg->ops->tx_polling(hw, hw_queue); 1692 1693 return 0; 1694 } 1695 1696 static void rtl_pci_flush(struct ieee80211_hw *hw, u32 queues, bool drop) 1697 { 1698 struct rtl_priv *rtlpriv = rtl_priv(hw); 1699 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); 1700 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); 1701 struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); 1702 u16 i = 0; 1703 int queue_id; 1704 struct rtl8192_tx_ring *ring; 1705 1706 if (mac->skip_scan) 1707 return; 1708 1709 for (queue_id = RTL_PCI_MAX_TX_QUEUE_COUNT - 1; queue_id >= 0;) { 1710 u32 queue_len; 1711 1712 if (((queues >> queue_id) & 0x1) == 0) { 1713 queue_id--; 1714 continue; 1715 } 1716 ring = &pcipriv->dev.tx_ring[queue_id]; 1717 queue_len = skb_queue_len(&ring->queue); 1718 if (queue_len == 0 || queue_id == BEACON_QUEUE || 1719 queue_id == TXCMD_QUEUE) { 1720 queue_id--; 1721 continue; 1722 } else { 1723 msleep(20); 1724 i++; 1725 } 1726 1727 /* we just wait 1s for all queues */ 1728 if (rtlpriv->psc.rfpwr_state == ERFOFF || 1729 is_hal_stop(rtlhal) || i >= 200) 1730 return; 1731 } 1732 } 1733 1734 static void rtl_pci_deinit(struct ieee80211_hw *hw) 1735 { 1736 struct rtl_priv *rtlpriv = rtl_priv(hw); 1737 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 1738 1739 _rtl_pci_deinit_trx_ring(hw); 1740 1741 synchronize_irq(rtlpci->pdev->irq); 1742 tasklet_kill(&rtlpriv->works.irq_tasklet); 1743 cancel_work_sync(&rtlpriv->works.lps_change_work); 1744 1745 destroy_workqueue(rtlpriv->works.rtl_wq); 1746 } 1747 1748 static int rtl_pci_init(struct ieee80211_hw *hw, struct pci_dev *pdev) 1749 { 1750 int err; 1751 1752 _rtl_pci_init_struct(hw, pdev); 1753 1754 err = _rtl_pci_init_trx_ring(hw); 1755 if (err) { 1756 pr_err("tx ring initialization failed\n"); 1757 return err; 1758 } 1759 1760 return 0; 1761 } 1762 1763 static int rtl_pci_start(struct ieee80211_hw *hw) 1764 { 1765 struct rtl_priv *rtlpriv = rtl_priv(hw); 1766 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); 1767 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 1768 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); 1769 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw)); 1770 struct rtl_btc_ops *btc_ops = rtlpriv->btcoexist.btc_ops; 1771 1772 int err; 1773 1774 rtl_pci_reset_trx_ring(hw); 1775 1776 rtlpci->driver_is_goingto_unload = false; 1777 if (rtlpriv->cfg->ops->get_btc_status && 1778 rtlpriv->cfg->ops->get_btc_status()) { 1779 rtlpriv->btcoexist.btc_info.ap_num = 36; 1780 btc_ops->btc_init_variables(rtlpriv); 1781 btc_ops->btc_init_hal_vars(rtlpriv); 1782 } else if (btc_ops) { 1783 btc_ops->btc_init_variables_wifi_only(rtlpriv); 1784 } 1785 1786 err = rtlpriv->cfg->ops->hw_init(hw); 1787 if (err) { 1788 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, 1789 "Failed to config hardware!\n"); 1790 kfree(rtlpriv->btcoexist.btc_context); 1791 kfree(rtlpriv->btcoexist.wifi_only_context); 1792 return err; 1793 } 1794 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RETRY_LIMIT, 1795 &rtlmac->retry_long); 1796 1797 rtlpriv->cfg->ops->enable_interrupt(hw); 1798 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "enable_interrupt OK\n"); 1799 1800 rtl_init_rx_config(hw); 1801 1802 /*should be after adapter start and interrupt enable. */ 1803 set_hal_start(rtlhal); 1804 1805 RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC); 1806 1807 rtlpci->up_first_time = false; 1808 1809 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, "%s OK\n", __func__); 1810 return 0; 1811 } 1812 1813 static void rtl_pci_stop(struct ieee80211_hw *hw) 1814 { 1815 struct rtl_priv *rtlpriv = rtl_priv(hw); 1816 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); 1817 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); 1818 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); 1819 unsigned long flags; 1820 u8 rf_timeout = 0; 1821 1822 if (rtlpriv->cfg->ops->get_btc_status()) 1823 rtlpriv->btcoexist.btc_ops->btc_halt_notify(rtlpriv); 1824 1825 if (rtlpriv->btcoexist.btc_ops) 1826 rtlpriv->btcoexist.btc_ops->btc_deinit_variables(rtlpriv); 1827 1828 /*should be before disable interrupt&adapter 1829 *and will do it immediately. 1830 */ 1831 set_hal_stop(rtlhal); 1832 1833 rtlpci->driver_is_goingto_unload = true; 1834 rtlpriv->cfg->ops->disable_interrupt(hw); 1835 cancel_work_sync(&rtlpriv->works.lps_change_work); 1836 1837 spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags); 1838 while (ppsc->rfchange_inprogress) { 1839 spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags); 1840 if (rf_timeout > 100) { 1841 spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags); 1842 break; 1843 } 1844 mdelay(1); 1845 rf_timeout++; 1846 spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags); 1847 } 1848 ppsc->rfchange_inprogress = true; 1849 spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags); 1850 1851 rtlpriv->cfg->ops->hw_disable(hw); 1852 /* some things are not needed if firmware not available */ 1853 if (!rtlpriv->max_fw_size) 1854 return; 1855 rtlpriv->cfg->ops->led_control(hw, LED_CTL_POWER_OFF); 1856 1857 spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags); 1858 ppsc->rfchange_inprogress = false; 1859 spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags); 1860 1861 rtl_pci_enable_aspm(hw); 1862 } 1863 1864 static bool _rtl_pci_find_adapter(struct pci_dev *pdev, 1865 struct ieee80211_hw *hw) 1866 { 1867 struct rtl_priv *rtlpriv = rtl_priv(hw); 1868 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); 1869 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); 1870 struct pci_dev *bridge_pdev = pdev->bus->self; 1871 u16 venderid; 1872 u16 deviceid; 1873 u8 revisionid; 1874 u16 irqline; 1875 u8 tmp; 1876 1877 pcipriv->ndis_adapter.pcibridge_vendor = PCI_BRIDGE_VENDOR_UNKNOWN; 1878 venderid = pdev->vendor; 1879 deviceid = pdev->device; 1880 pci_read_config_byte(pdev, 0x8, &revisionid); 1881 pci_read_config_word(pdev, 0x3C, &irqline); 1882 1883 /* PCI ID 0x10ec:0x8192 occurs for both RTL8192E, which uses 1884 * r8192e_pci, and RTL8192SE, which uses this driver. If the 1885 * revision ID is RTL_PCI_REVISION_ID_8192PCIE (0x01), then 1886 * the correct driver is r8192e_pci, thus this routine should 1887 * return false. 1888 */ 1889 if (deviceid == RTL_PCI_8192SE_DID && 1890 revisionid == RTL_PCI_REVISION_ID_8192PCIE) 1891 return false; 1892 1893 if (deviceid == RTL_PCI_8192_DID || 1894 deviceid == RTL_PCI_0044_DID || 1895 deviceid == RTL_PCI_0047_DID || 1896 deviceid == RTL_PCI_8192SE_DID || 1897 deviceid == RTL_PCI_8174_DID || 1898 deviceid == RTL_PCI_8173_DID || 1899 deviceid == RTL_PCI_8172_DID || 1900 deviceid == RTL_PCI_8171_DID) { 1901 switch (revisionid) { 1902 case RTL_PCI_REVISION_ID_8192PCIE: 1903 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, 1904 "8192 PCI-E is found - vid/did=%x/%x\n", 1905 venderid, deviceid); 1906 rtlhal->hw_type = HARDWARE_TYPE_RTL8192E; 1907 return false; 1908 case RTL_PCI_REVISION_ID_8192SE: 1909 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, 1910 "8192SE is found - vid/did=%x/%x\n", 1911 venderid, deviceid); 1912 rtlhal->hw_type = HARDWARE_TYPE_RTL8192SE; 1913 break; 1914 default: 1915 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, 1916 "Err: Unknown device - vid/did=%x/%x\n", 1917 venderid, deviceid); 1918 rtlhal->hw_type = HARDWARE_TYPE_RTL8192SE; 1919 break; 1920 } 1921 } else if (deviceid == RTL_PCI_8723AE_DID) { 1922 rtlhal->hw_type = HARDWARE_TYPE_RTL8723AE; 1923 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, 1924 "8723AE PCI-E is found - vid/did=%x/%x\n", 1925 venderid, deviceid); 1926 } else if (deviceid == RTL_PCI_8192CET_DID || 1927 deviceid == RTL_PCI_8192CE_DID || 1928 deviceid == RTL_PCI_8191CE_DID || 1929 deviceid == RTL_PCI_8188CE_DID) { 1930 rtlhal->hw_type = HARDWARE_TYPE_RTL8192CE; 1931 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, 1932 "8192C PCI-E is found - vid/did=%x/%x\n", 1933 venderid, deviceid); 1934 } else if (deviceid == RTL_PCI_8192DE_DID || 1935 deviceid == RTL_PCI_8192DE_DID2) { 1936 rtlhal->hw_type = HARDWARE_TYPE_RTL8192DE; 1937 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, 1938 "8192D PCI-E is found - vid/did=%x/%x\n", 1939 venderid, deviceid); 1940 } else if (deviceid == RTL_PCI_8188EE_DID) { 1941 rtlhal->hw_type = HARDWARE_TYPE_RTL8188EE; 1942 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, 1943 "Find adapter, Hardware type is 8188EE\n"); 1944 } else if (deviceid == RTL_PCI_8723BE_DID) { 1945 rtlhal->hw_type = HARDWARE_TYPE_RTL8723BE; 1946 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, 1947 "Find adapter, Hardware type is 8723BE\n"); 1948 } else if (deviceid == RTL_PCI_8192EE_DID) { 1949 rtlhal->hw_type = HARDWARE_TYPE_RTL8192EE; 1950 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, 1951 "Find adapter, Hardware type is 8192EE\n"); 1952 } else if (deviceid == RTL_PCI_8821AE_DID) { 1953 rtlhal->hw_type = HARDWARE_TYPE_RTL8821AE; 1954 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, 1955 "Find adapter, Hardware type is 8821AE\n"); 1956 } else if (deviceid == RTL_PCI_8812AE_DID) { 1957 rtlhal->hw_type = HARDWARE_TYPE_RTL8812AE; 1958 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, 1959 "Find adapter, Hardware type is 8812AE\n"); 1960 } else if (deviceid == RTL_PCI_8822BE_DID) { 1961 rtlhal->hw_type = HARDWARE_TYPE_RTL8822BE; 1962 rtlhal->bandset = BAND_ON_BOTH; 1963 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, 1964 "Find adapter, Hardware type is 8822BE\n"); 1965 } else { 1966 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, 1967 "Err: Unknown device - vid/did=%x/%x\n", 1968 venderid, deviceid); 1969 1970 rtlhal->hw_type = RTL_DEFAULT_HARDWARE_TYPE; 1971 } 1972 1973 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192DE) { 1974 if (revisionid == 0 || revisionid == 1) { 1975 if (revisionid == 0) { 1976 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, 1977 "Find 92DE MAC0\n"); 1978 rtlhal->interfaceindex = 0; 1979 } else if (revisionid == 1) { 1980 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, 1981 "Find 92DE MAC1\n"); 1982 rtlhal->interfaceindex = 1; 1983 } 1984 } else { 1985 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, 1986 "Unknown device - VendorID/DeviceID=%x/%x, Revision=%x\n", 1987 venderid, deviceid, revisionid); 1988 rtlhal->interfaceindex = 0; 1989 } 1990 } 1991 1992 switch (rtlhal->hw_type) { 1993 case HARDWARE_TYPE_RTL8192EE: 1994 case HARDWARE_TYPE_RTL8822BE: 1995 /* use new trx flow */ 1996 rtlpriv->use_new_trx_flow = true; 1997 break; 1998 1999 default: 2000 rtlpriv->use_new_trx_flow = false; 2001 break; 2002 } 2003 2004 /*find bus info */ 2005 pcipriv->ndis_adapter.busnumber = pdev->bus->number; 2006 pcipriv->ndis_adapter.devnumber = PCI_SLOT(pdev->devfn); 2007 pcipriv->ndis_adapter.funcnumber = PCI_FUNC(pdev->devfn); 2008 2009 /*find bridge info */ 2010 pcipriv->ndis_adapter.pcibridge_vendor = PCI_BRIDGE_VENDOR_UNKNOWN; 2011 /* some ARM have no bridge_pdev and will crash here 2012 * so we should check if bridge_pdev is NULL 2013 */ 2014 if (bridge_pdev) { 2015 /*find bridge info if available */ 2016 pcipriv->ndis_adapter.pcibridge_vendorid = bridge_pdev->vendor; 2017 for (tmp = 0; tmp < PCI_BRIDGE_VENDOR_MAX; tmp++) { 2018 if (bridge_pdev->vendor == pcibridge_vendors[tmp]) { 2019 pcipriv->ndis_adapter.pcibridge_vendor = tmp; 2020 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, 2021 "Pci Bridge Vendor is found index: %d\n", 2022 tmp); 2023 break; 2024 } 2025 } 2026 } 2027 2028 if (pcipriv->ndis_adapter.pcibridge_vendor != 2029 PCI_BRIDGE_VENDOR_UNKNOWN) { 2030 pcipriv->ndis_adapter.pcibridge_busnum = 2031 bridge_pdev->bus->number; 2032 pcipriv->ndis_adapter.pcibridge_devnum = 2033 PCI_SLOT(bridge_pdev->devfn); 2034 pcipriv->ndis_adapter.pcibridge_funcnum = 2035 PCI_FUNC(bridge_pdev->devfn); 2036 pcipriv->ndis_adapter.pcibridge_pciehdr_offset = 2037 pci_pcie_cap(bridge_pdev); 2038 pcipriv->ndis_adapter.num4bytes = 2039 (pcipriv->ndis_adapter.pcibridge_pciehdr_offset + 0x10) / 4; 2040 2041 rtl_pci_get_linkcontrol_field(hw); 2042 2043 if (pcipriv->ndis_adapter.pcibridge_vendor == 2044 PCI_BRIDGE_VENDOR_AMD) { 2045 pcipriv->ndis_adapter.amd_l1_patch = 2046 rtl_pci_get_amd_l1_patch(hw); 2047 } 2048 } 2049 2050 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, 2051 "pcidev busnumber:devnumber:funcnumber:vendor:link_ctl %d:%d:%d:%x:%x\n", 2052 pcipriv->ndis_adapter.busnumber, 2053 pcipriv->ndis_adapter.devnumber, 2054 pcipriv->ndis_adapter.funcnumber, 2055 pdev->vendor, pcipriv->ndis_adapter.linkctrl_reg); 2056 2057 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, 2058 "pci_bridge busnumber:devnumber:funcnumber:vendor:pcie_cap:link_ctl_reg:amd %d:%d:%d:%x:%x:%x:%x\n", 2059 pcipriv->ndis_adapter.pcibridge_busnum, 2060 pcipriv->ndis_adapter.pcibridge_devnum, 2061 pcipriv->ndis_adapter.pcibridge_funcnum, 2062 pcibridge_vendors[pcipriv->ndis_adapter.pcibridge_vendor], 2063 pcipriv->ndis_adapter.pcibridge_pciehdr_offset, 2064 pcipriv->ndis_adapter.pcibridge_linkctrlreg, 2065 pcipriv->ndis_adapter.amd_l1_patch); 2066 2067 rtl_pci_parse_configuration(pdev, hw); 2068 list_add_tail(&rtlpriv->list, &rtlpriv->glb_var->glb_priv_list); 2069 2070 return true; 2071 } 2072 2073 static int rtl_pci_intr_mode_msi(struct ieee80211_hw *hw) 2074 { 2075 struct rtl_priv *rtlpriv = rtl_priv(hw); 2076 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); 2077 struct rtl_pci *rtlpci = rtl_pcidev(pcipriv); 2078 int ret; 2079 2080 ret = pci_enable_msi(rtlpci->pdev); 2081 if (ret < 0) 2082 return ret; 2083 2084 ret = request_irq(rtlpci->pdev->irq, &_rtl_pci_interrupt, 2085 IRQF_SHARED, KBUILD_MODNAME, hw); 2086 if (ret < 0) { 2087 pci_disable_msi(rtlpci->pdev); 2088 return ret; 2089 } 2090 2091 rtlpci->using_msi = true; 2092 2093 rtl_dbg(rtlpriv, COMP_INIT | COMP_INTR, DBG_DMESG, 2094 "MSI Interrupt Mode!\n"); 2095 return 0; 2096 } 2097 2098 static int rtl_pci_intr_mode_legacy(struct ieee80211_hw *hw) 2099 { 2100 struct rtl_priv *rtlpriv = rtl_priv(hw); 2101 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); 2102 struct rtl_pci *rtlpci = rtl_pcidev(pcipriv); 2103 int ret; 2104 2105 ret = request_irq(rtlpci->pdev->irq, &_rtl_pci_interrupt, 2106 IRQF_SHARED, KBUILD_MODNAME, hw); 2107 if (ret < 0) 2108 return ret; 2109 2110 rtlpci->using_msi = false; 2111 rtl_dbg(rtlpriv, COMP_INIT | COMP_INTR, DBG_DMESG, 2112 "Pin-based Interrupt Mode!\n"); 2113 return 0; 2114 } 2115 2116 static int rtl_pci_intr_mode_decide(struct ieee80211_hw *hw) 2117 { 2118 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); 2119 struct rtl_pci *rtlpci = rtl_pcidev(pcipriv); 2120 int ret; 2121 2122 if (rtlpci->msi_support) { 2123 ret = rtl_pci_intr_mode_msi(hw); 2124 if (ret < 0) 2125 ret = rtl_pci_intr_mode_legacy(hw); 2126 } else { 2127 ret = rtl_pci_intr_mode_legacy(hw); 2128 } 2129 return ret; 2130 } 2131 2132 static void platform_enable_dma64(struct pci_dev *pdev, bool dma64) 2133 { 2134 u8 value; 2135 2136 pci_read_config_byte(pdev, 0x719, &value); 2137 2138 /* 0x719 Bit5 is DMA64 bit fetch. */ 2139 if (dma64) 2140 value |= BIT(5); 2141 else 2142 value &= ~BIT(5); 2143 2144 pci_write_config_byte(pdev, 0x719, value); 2145 } 2146 2147 int rtl_pci_probe(struct pci_dev *pdev, 2148 const struct pci_device_id *id) 2149 { 2150 struct ieee80211_hw *hw = NULL; 2151 2152 struct rtl_priv *rtlpriv = NULL; 2153 struct rtl_pci_priv *pcipriv = NULL; 2154 struct rtl_pci *rtlpci; 2155 unsigned long pmem_start, pmem_len, pmem_flags; 2156 int err; 2157 2158 err = pci_enable_device(pdev); 2159 if (err) { 2160 WARN_ONCE(true, "%s : Cannot enable new PCI device\n", 2161 pci_name(pdev)); 2162 return err; 2163 } 2164 2165 if (((struct rtl_hal_cfg *)id->driver_data)->mod_params->dma64 && 2166 !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { 2167 if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { 2168 WARN_ONCE(true, 2169 "Unable to obtain 64bit DMA for consistent allocations\n"); 2170 err = -ENOMEM; 2171 goto fail1; 2172 } 2173 2174 platform_enable_dma64(pdev, true); 2175 } else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) { 2176 if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32))) { 2177 WARN_ONCE(true, 2178 "rtlwifi: Unable to obtain 32bit DMA for consistent allocations\n"); 2179 err = -ENOMEM; 2180 goto fail1; 2181 } 2182 2183 platform_enable_dma64(pdev, false); 2184 } 2185 2186 pci_set_master(pdev); 2187 2188 hw = ieee80211_alloc_hw(sizeof(struct rtl_pci_priv) + 2189 sizeof(struct rtl_priv), &rtl_ops); 2190 if (!hw) { 2191 WARN_ONCE(true, 2192 "%s : ieee80211 alloc failed\n", pci_name(pdev)); 2193 err = -ENOMEM; 2194 goto fail1; 2195 } 2196 2197 SET_IEEE80211_DEV(hw, &pdev->dev); 2198 pci_set_drvdata(pdev, hw); 2199 2200 rtlpriv = hw->priv; 2201 rtlpriv->hw = hw; 2202 pcipriv = (void *)rtlpriv->priv; 2203 pcipriv->dev.pdev = pdev; 2204 init_completion(&rtlpriv->firmware_loading_complete); 2205 /*proximity init here*/ 2206 rtlpriv->proximity.proxim_on = false; 2207 2208 pcipriv = (void *)rtlpriv->priv; 2209 pcipriv->dev.pdev = pdev; 2210 2211 /* init cfg & intf_ops */ 2212 rtlpriv->rtlhal.interface = INTF_PCI; 2213 rtlpriv->cfg = (struct rtl_hal_cfg *)(id->driver_data); 2214 rtlpriv->intf_ops = &rtl_pci_ops; 2215 rtlpriv->glb_var = &rtl_global_var; 2216 rtl_efuse_ops_init(hw); 2217 2218 /* MEM map */ 2219 err = pci_request_regions(pdev, KBUILD_MODNAME); 2220 if (err) { 2221 WARN_ONCE(true, "rtlwifi: Can't obtain PCI resources\n"); 2222 goto fail1; 2223 } 2224 2225 pmem_start = pci_resource_start(pdev, rtlpriv->cfg->bar_id); 2226 pmem_len = pci_resource_len(pdev, rtlpriv->cfg->bar_id); 2227 pmem_flags = pci_resource_flags(pdev, rtlpriv->cfg->bar_id); 2228 2229 /*shared mem start */ 2230 rtlpriv->io.pci_mem_start = 2231 (unsigned long)pci_iomap(pdev, 2232 rtlpriv->cfg->bar_id, pmem_len); 2233 if (rtlpriv->io.pci_mem_start == 0) { 2234 WARN_ONCE(true, "rtlwifi: Can't map PCI mem\n"); 2235 err = -ENOMEM; 2236 goto fail2; 2237 } 2238 2239 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, 2240 "mem mapped space: start: 0x%08lx len:%08lx flags:%08lx, after map:0x%08lx\n", 2241 pmem_start, pmem_len, pmem_flags, 2242 rtlpriv->io.pci_mem_start); 2243 2244 /* Disable Clk Request */ 2245 pci_write_config_byte(pdev, 0x81, 0); 2246 /* leave D3 mode */ 2247 pci_write_config_byte(pdev, 0x44, 0); 2248 pci_write_config_byte(pdev, 0x04, 0x06); 2249 pci_write_config_byte(pdev, 0x04, 0x07); 2250 2251 /* find adapter */ 2252 if (!_rtl_pci_find_adapter(pdev, hw)) { 2253 err = -ENODEV; 2254 goto fail2; 2255 } 2256 2257 /* Init IO handler */ 2258 _rtl_pci_io_handler_init(&pdev->dev, hw); 2259 2260 /*like read eeprom and so on */ 2261 rtlpriv->cfg->ops->read_eeprom_info(hw); 2262 2263 if (rtlpriv->cfg->ops->init_sw_vars(hw)) { 2264 pr_err("Can't init_sw_vars\n"); 2265 err = -ENODEV; 2266 goto fail3; 2267 } 2268 rtlpriv->cfg->ops->init_sw_leds(hw); 2269 2270 /*aspm */ 2271 rtl_pci_init_aspm(hw); 2272 2273 /* Init mac80211 sw */ 2274 err = rtl_init_core(hw); 2275 if (err) { 2276 pr_err("Can't allocate sw for mac80211\n"); 2277 goto fail3; 2278 } 2279 2280 /* Init PCI sw */ 2281 err = rtl_pci_init(hw, pdev); 2282 if (err) { 2283 pr_err("Failed to init PCI\n"); 2284 goto fail3; 2285 } 2286 2287 err = ieee80211_register_hw(hw); 2288 if (err) { 2289 pr_err("Can't register mac80211 hw.\n"); 2290 err = -ENODEV; 2291 goto fail3; 2292 } 2293 rtlpriv->mac80211.mac80211_registered = 1; 2294 2295 /* add for debug */ 2296 rtl_debug_add_one(hw); 2297 2298 /*init rfkill */ 2299 rtl_init_rfkill(hw); /* Init PCI sw */ 2300 2301 rtlpci = rtl_pcidev(pcipriv); 2302 err = rtl_pci_intr_mode_decide(hw); 2303 if (err) { 2304 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, 2305 "%s: failed to register IRQ handler\n", 2306 wiphy_name(hw->wiphy)); 2307 goto fail3; 2308 } 2309 rtlpci->irq_alloc = 1; 2310 2311 set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status); 2312 return 0; 2313 2314 fail3: 2315 pci_set_drvdata(pdev, NULL); 2316 rtl_deinit_core(hw); 2317 2318 fail2: 2319 if (rtlpriv->io.pci_mem_start != 0) 2320 pci_iounmap(pdev, (void __iomem *)rtlpriv->io.pci_mem_start); 2321 2322 pci_release_regions(pdev); 2323 complete(&rtlpriv->firmware_loading_complete); 2324 2325 fail1: 2326 if (hw) 2327 ieee80211_free_hw(hw); 2328 pci_disable_device(pdev); 2329 2330 return err; 2331 } 2332 EXPORT_SYMBOL(rtl_pci_probe); 2333 2334 void rtl_pci_disconnect(struct pci_dev *pdev) 2335 { 2336 struct ieee80211_hw *hw = pci_get_drvdata(pdev); 2337 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); 2338 struct rtl_priv *rtlpriv = rtl_priv(hw); 2339 struct rtl_pci *rtlpci = rtl_pcidev(pcipriv); 2340 struct rtl_mac *rtlmac = rtl_mac(rtlpriv); 2341 2342 /* just in case driver is removed before firmware callback */ 2343 wait_for_completion(&rtlpriv->firmware_loading_complete); 2344 clear_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status); 2345 2346 /* remove form debug */ 2347 rtl_debug_remove_one(hw); 2348 2349 /*ieee80211_unregister_hw will call ops_stop */ 2350 if (rtlmac->mac80211_registered == 1) { 2351 ieee80211_unregister_hw(hw); 2352 rtlmac->mac80211_registered = 0; 2353 } else { 2354 rtl_deinit_deferred_work(hw, false); 2355 rtlpriv->intf_ops->adapter_stop(hw); 2356 } 2357 rtlpriv->cfg->ops->disable_interrupt(hw); 2358 2359 /*deinit rfkill */ 2360 rtl_deinit_rfkill(hw); 2361 2362 rtl_pci_deinit(hw); 2363 rtl_deinit_core(hw); 2364 rtlpriv->cfg->ops->deinit_sw_vars(hw); 2365 2366 if (rtlpci->irq_alloc) { 2367 free_irq(rtlpci->pdev->irq, hw); 2368 rtlpci->irq_alloc = 0; 2369 } 2370 2371 if (rtlpci->using_msi) 2372 pci_disable_msi(rtlpci->pdev); 2373 2374 list_del(&rtlpriv->list); 2375 if (rtlpriv->io.pci_mem_start != 0) { 2376 pci_iounmap(pdev, (void __iomem *)rtlpriv->io.pci_mem_start); 2377 pci_release_regions(pdev); 2378 } 2379 2380 pci_disable_device(pdev); 2381 2382 rtl_pci_disable_aspm(hw); 2383 2384 pci_set_drvdata(pdev, NULL); 2385 2386 ieee80211_free_hw(hw); 2387 } 2388 EXPORT_SYMBOL(rtl_pci_disconnect); 2389 2390 #ifdef CONFIG_PM_SLEEP 2391 /*************************************** 2392 * kernel pci power state define: 2393 * PCI_D0 ((pci_power_t __force) 0) 2394 * PCI_D1 ((pci_power_t __force) 1) 2395 * PCI_D2 ((pci_power_t __force) 2) 2396 * PCI_D3hot ((pci_power_t __force) 3) 2397 * PCI_D3cold ((pci_power_t __force) 4) 2398 * PCI_UNKNOWN ((pci_power_t __force) 5) 2399 2400 * This function is called when system 2401 * goes into suspend state mac80211 will 2402 * call rtl_mac_stop() from the mac80211 2403 * suspend function first, So there is 2404 * no need to call hw_disable here. 2405 ****************************************/ 2406 int rtl_pci_suspend(struct device *dev) 2407 { 2408 struct ieee80211_hw *hw = dev_get_drvdata(dev); 2409 struct rtl_priv *rtlpriv = rtl_priv(hw); 2410 2411 rtlpriv->cfg->ops->hw_suspend(hw); 2412 rtl_deinit_rfkill(hw); 2413 2414 return 0; 2415 } 2416 EXPORT_SYMBOL(rtl_pci_suspend); 2417 2418 int rtl_pci_resume(struct device *dev) 2419 { 2420 struct ieee80211_hw *hw = dev_get_drvdata(dev); 2421 struct rtl_priv *rtlpriv = rtl_priv(hw); 2422 2423 rtlpriv->cfg->ops->hw_resume(hw); 2424 rtl_init_rfkill(hw); 2425 return 0; 2426 } 2427 EXPORT_SYMBOL(rtl_pci_resume); 2428 #endif /* CONFIG_PM_SLEEP */ 2429 2430 const struct rtl_intf_ops rtl_pci_ops = { 2431 .read_efuse_byte = read_efuse_byte, 2432 .adapter_start = rtl_pci_start, 2433 .adapter_stop = rtl_pci_stop, 2434 .check_buddy_priv = rtl_pci_check_buddy_priv, 2435 .adapter_tx = rtl_pci_tx, 2436 .flush = rtl_pci_flush, 2437 .reset_trx_ring = rtl_pci_reset_trx_ring, 2438 .waitq_insert = rtl_pci_tx_chk_waitq_insert, 2439 2440 .disable_aspm = rtl_pci_disable_aspm, 2441 .enable_aspm = rtl_pci_enable_aspm, 2442 }; 2443