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
_rtl_mac_to_hwqueue(struct ieee80211_hw * hw,struct sk_buff * skb)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*/
_rtl_pci_update_default_setting(struct ieee80211_hw * hw)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 u16 init_aspm;
68
69 ppsc->reg_rfps_level = 0;
70 ppsc->support_aspm = false;
71
72 /*Update PCI ASPM setting */
73 switch (rtlpci->const_pci_aspm) {
74 case 0:
75 /*No ASPM */
76 break;
77
78 case 1:
79 /*ASPM dynamically enabled/disable. */
80 ppsc->reg_rfps_level |= RT_RF_LPS_LEVEL_ASPM;
81 break;
82
83 case 2:
84 /*ASPM with Clock Req dynamically enabled/disable. */
85 ppsc->reg_rfps_level |= (RT_RF_LPS_LEVEL_ASPM |
86 RT_RF_OFF_LEVL_CLK_REQ);
87 break;
88
89 case 3:
90 /* Always enable ASPM and Clock Req
91 * from initialization to halt.
92 */
93 ppsc->reg_rfps_level &= ~(RT_RF_LPS_LEVEL_ASPM);
94 ppsc->reg_rfps_level |= (RT_RF_PS_LEVEL_ALWAYS_ASPM |
95 RT_RF_OFF_LEVL_CLK_REQ);
96 break;
97
98 case 4:
99 /* Always enable ASPM without Clock Req
100 * from initialization to halt.
101 */
102 ppsc->reg_rfps_level &= ~(RT_RF_LPS_LEVEL_ASPM |
103 RT_RF_OFF_LEVL_CLK_REQ);
104 ppsc->reg_rfps_level |= RT_RF_PS_LEVEL_ALWAYS_ASPM;
105 break;
106 }
107
108 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_HALT_NIC;
109
110 /*Update Radio OFF setting */
111 switch (rtlpci->const_hwsw_rfoff_d3) {
112 case 1:
113 if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM)
114 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_ASPM;
115 break;
116
117 case 2:
118 if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM)
119 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_ASPM;
120 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_HALT_NIC;
121 break;
122
123 case 3:
124 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_PCI_D3;
125 break;
126 }
127
128 /*Set HW definition to determine if it supports ASPM. */
129 switch (rtlpci->const_support_pciaspm) {
130 case 0:
131 /*Not support ASPM. */
132 ppsc->support_aspm = false;
133 break;
134 case 1:
135 /*Support ASPM. */
136 ppsc->support_aspm = true;
137 ppsc->support_backdoor = true;
138 break;
139 case 2:
140 /*ASPM value set by chipset. */
141 if (pcibridge_vendor == PCI_BRIDGE_VENDOR_INTEL)
142 ppsc->support_aspm = true;
143 break;
144 default:
145 pr_err("switch case %#x not processed\n",
146 rtlpci->const_support_pciaspm);
147 break;
148 }
149
150 /* toshiba aspm issue, toshiba will set aspm selfly
151 * so we should not set aspm in driver
152 */
153 pcie_capability_read_word(rtlpci->pdev, PCI_EXP_LNKCTL, &init_aspm);
154 if (rtlpriv->rtlhal.hw_type == HARDWARE_TYPE_RTL8192SE &&
155 ((u8)init_aspm) == (PCI_EXP_LNKCTL_ASPM_L0S |
156 PCI_EXP_LNKCTL_ASPM_L1 | PCI_EXP_LNKCTL_CCC))
157 ppsc->support_aspm = false;
158 }
159
_rtl_pci_platform_switch_device_pci_aspm(struct ieee80211_hw * hw,u8 value)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 value &= PCI_EXP_LNKCTL_ASPMC;
168
169 if (rtlhal->hw_type != HARDWARE_TYPE_RTL8192SE)
170 value |= PCI_EXP_LNKCTL_CCC;
171
172 pcie_capability_clear_and_set_word(rtlpci->pdev, PCI_EXP_LNKCTL,
173 PCI_EXP_LNKCTL_ASPMC | value,
174 value);
175
176 return false;
177 }
178
179 /* @value is PCI_EXP_LNKCTL_CLKREQ_EN or 0 to enable/disable clk request. */
_rtl_pci_switch_clk_req(struct ieee80211_hw * hw,u16 value)180 static void _rtl_pci_switch_clk_req(struct ieee80211_hw *hw, u16 value)
181 {
182 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
183 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
184
185 value &= PCI_EXP_LNKCTL_CLKREQ_EN;
186
187 pcie_capability_clear_and_set_word(rtlpci->pdev, PCI_EXP_LNKCTL,
188 PCI_EXP_LNKCTL_CLKREQ_EN,
189 value);
190
191 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE)
192 udelay(100);
193 }
194
195 /*Disable RTL8192SE ASPM & Disable Pci Bridge ASPM*/
rtl_pci_disable_aspm(struct ieee80211_hw * hw)196 static void rtl_pci_disable_aspm(struct ieee80211_hw *hw)
197 {
198 struct rtl_priv *rtlpriv = rtl_priv(hw);
199 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
200 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
201 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
202 u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor;
203 /*Retrieve original configuration settings. */
204 u8 linkctrl_reg = pcipriv->ndis_adapter.linkctrl_reg;
205 u16 aspmlevel = 0;
206 u16 tmp_u1b = 0;
207
208 if (!ppsc->support_aspm)
209 return;
210
211 if (pcibridge_vendor == PCI_BRIDGE_VENDOR_UNKNOWN) {
212 rtl_dbg(rtlpriv, COMP_POWER, DBG_TRACE,
213 "PCI(Bridge) UNKNOWN\n");
214
215 return;
216 }
217
218 if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_CLK_REQ) {
219 RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_CLK_REQ);
220 _rtl_pci_switch_clk_req(hw, 0x0);
221 }
222
223 /*for promising device will in L0 state after an I/O. */
224 pcie_capability_read_word(rtlpci->pdev, PCI_EXP_LNKCTL, &tmp_u1b);
225
226 /*Set corresponding value. */
227 aspmlevel |= PCI_EXP_LNKCTL_ASPM_L0S | PCI_EXP_LNKCTL_ASPM_L1;
228 linkctrl_reg &= ~aspmlevel;
229
230 _rtl_pci_platform_switch_device_pci_aspm(hw, linkctrl_reg);
231 }
232
233 /*Enable RTL8192SE ASPM & Enable Pci Bridge ASPM for
234 *power saving We should follow the sequence to enable
235 *RTL8192SE first then enable Pci Bridge ASPM
236 *or the system will show bluescreen.
237 */
rtl_pci_enable_aspm(struct ieee80211_hw * hw)238 static void rtl_pci_enable_aspm(struct ieee80211_hw *hw)
239 {
240 struct rtl_priv *rtlpriv = rtl_priv(hw);
241 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
242 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
243 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
244 u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor;
245 u16 aspmlevel;
246 u8 u_device_aspmsetting;
247
248 if (!ppsc->support_aspm)
249 return;
250
251 if (pcibridge_vendor == PCI_BRIDGE_VENDOR_UNKNOWN) {
252 rtl_dbg(rtlpriv, COMP_POWER, DBG_TRACE,
253 "PCI(Bridge) UNKNOWN\n");
254 return;
255 }
256
257 /*Get ASPM level (with/without Clock Req) */
258 aspmlevel = rtlpci->const_devicepci_aspm_setting;
259 u_device_aspmsetting = pcipriv->ndis_adapter.linkctrl_reg;
260
261 /*_rtl_pci_platform_switch_device_pci_aspm(dev,*/
262 /*(priv->ndis_adapter.linkctrl_reg | ASPMLevel)); */
263
264 u_device_aspmsetting |= aspmlevel;
265
266 _rtl_pci_platform_switch_device_pci_aspm(hw, u_device_aspmsetting);
267
268 if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_CLK_REQ) {
269 _rtl_pci_switch_clk_req(hw, (ppsc->reg_rfps_level &
270 RT_RF_OFF_LEVL_CLK_REQ) ?
271 PCI_EXP_LNKCTL_CLKREQ_EN : 0);
272 RT_SET_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_CLK_REQ);
273 }
274 udelay(100);
275 }
276
rtl_pci_get_amd_l1_patch(struct ieee80211_hw * hw)277 static bool rtl_pci_get_amd_l1_patch(struct ieee80211_hw *hw)
278 {
279 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
280
281 bool status = false;
282 u8 offset_e0;
283 unsigned int offset_e4;
284
285 pci_write_config_byte(rtlpci->pdev, 0xe0, 0xa0);
286
287 pci_read_config_byte(rtlpci->pdev, 0xe0, &offset_e0);
288
289 if (offset_e0 == 0xA0) {
290 pci_read_config_dword(rtlpci->pdev, 0xe4, &offset_e4);
291 if (offset_e4 & BIT(23))
292 status = true;
293 }
294
295 return status;
296 }
297
rtl_pci_check_buddy_priv(struct ieee80211_hw * hw,struct rtl_priv ** buddy_priv)298 static bool rtl_pci_check_buddy_priv(struct ieee80211_hw *hw,
299 struct rtl_priv **buddy_priv)
300 {
301 struct rtl_priv *rtlpriv = rtl_priv(hw);
302 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
303 struct rtl_priv *tpriv = NULL, *iter;
304 struct rtl_pci_priv *tpcipriv = NULL;
305
306 if (!list_empty(&rtlpriv->glb_var->glb_priv_list)) {
307 list_for_each_entry(iter, &rtlpriv->glb_var->glb_priv_list,
308 list) {
309 tpcipriv = (struct rtl_pci_priv *)iter->priv;
310 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
311 "pcipriv->ndis_adapter.funcnumber %x\n",
312 pcipriv->ndis_adapter.funcnumber);
313 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
314 "tpcipriv->ndis_adapter.funcnumber %x\n",
315 tpcipriv->ndis_adapter.funcnumber);
316
317 if (pcipriv->ndis_adapter.busnumber ==
318 tpcipriv->ndis_adapter.busnumber &&
319 pcipriv->ndis_adapter.devnumber ==
320 tpcipriv->ndis_adapter.devnumber &&
321 pcipriv->ndis_adapter.funcnumber !=
322 tpcipriv->ndis_adapter.funcnumber) {
323 tpriv = iter;
324 break;
325 }
326 }
327 }
328
329 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
330 "find_buddy_priv %d\n", tpriv != NULL);
331
332 if (tpriv)
333 *buddy_priv = tpriv;
334
335 return tpriv != NULL;
336 }
337
rtl_pci_parse_configuration(struct pci_dev * pdev,struct ieee80211_hw * hw)338 static void rtl_pci_parse_configuration(struct pci_dev *pdev,
339 struct ieee80211_hw *hw)
340 {
341 struct rtl_priv *rtlpriv = rtl_priv(hw);
342 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
343
344 u8 tmp;
345 u16 linkctrl_reg;
346
347 /*Link Control Register */
348 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &linkctrl_reg);
349 pcipriv->ndis_adapter.linkctrl_reg = (u8)linkctrl_reg;
350
351 rtl_dbg(rtlpriv, COMP_INIT, DBG_TRACE, "Link Control Register =%x\n",
352 pcipriv->ndis_adapter.linkctrl_reg);
353
354 pcie_capability_set_word(pdev, PCI_EXP_DEVCTL2,
355 PCI_EXP_DEVCTL2_COMP_TMOUT_DIS);
356
357 tmp = 0x17;
358 pci_write_config_byte(pdev, 0x70f, tmp);
359 }
360
rtl_pci_init_aspm(struct ieee80211_hw * hw)361 static void rtl_pci_init_aspm(struct ieee80211_hw *hw)
362 {
363 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
364
365 _rtl_pci_update_default_setting(hw);
366
367 if (ppsc->reg_rfps_level & RT_RF_PS_LEVEL_ALWAYS_ASPM) {
368 /*Always enable ASPM & Clock Req. */
369 rtl_pci_enable_aspm(hw);
370 RT_SET_PS_LEVEL(ppsc, RT_RF_PS_LEVEL_ALWAYS_ASPM);
371 }
372 }
373
_rtl_pci_io_handler_init(struct device * dev,struct ieee80211_hw * hw)374 static void _rtl_pci_io_handler_init(struct device *dev,
375 struct ieee80211_hw *hw)
376 {
377 struct rtl_priv *rtlpriv = rtl_priv(hw);
378
379 rtlpriv->io.dev = dev;
380
381 rtlpriv->io.write8 = pci_write8_async;
382 rtlpriv->io.write16 = pci_write16_async;
383 rtlpriv->io.write32 = pci_write32_async;
384
385 rtlpriv->io.read8 = pci_read8_sync;
386 rtlpriv->io.read16 = pci_read16_sync;
387 rtlpriv->io.read32 = pci_read32_sync;
388 }
389
_rtl_update_earlymode_info(struct ieee80211_hw * hw,struct sk_buff * skb,struct rtl_tcb_desc * tcb_desc,u8 tid)390 static bool _rtl_update_earlymode_info(struct ieee80211_hw *hw,
391 struct sk_buff *skb,
392 struct rtl_tcb_desc *tcb_desc, u8 tid)
393 {
394 struct rtl_priv *rtlpriv = rtl_priv(hw);
395 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
396 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
397 struct sk_buff *next_skb;
398 u8 additionlen = FCS_LEN;
399
400 /* here open is 4, wep/tkip is 8, aes is 12*/
401 if (info->control.hw_key)
402 additionlen += info->control.hw_key->icv_len;
403
404 /* The most skb num is 6 */
405 tcb_desc->empkt_num = 0;
406 spin_lock_bh(&rtlpriv->locks.waitq_lock);
407 skb_queue_walk(&rtlpriv->mac80211.skb_waitq[tid], next_skb) {
408 struct ieee80211_tx_info *next_info;
409
410 next_info = IEEE80211_SKB_CB(next_skb);
411 if (next_info->flags & IEEE80211_TX_CTL_AMPDU) {
412 tcb_desc->empkt_len[tcb_desc->empkt_num] =
413 next_skb->len + additionlen;
414 tcb_desc->empkt_num++;
415 } else {
416 break;
417 }
418
419 if (skb_queue_is_last(&rtlpriv->mac80211.skb_waitq[tid],
420 next_skb))
421 break;
422
423 if (tcb_desc->empkt_num >= rtlhal->max_earlymode_num)
424 break;
425 }
426 spin_unlock_bh(&rtlpriv->locks.waitq_lock);
427
428 return true;
429 }
430
431 /* just for early mode now */
_rtl_pci_tx_chk_waitq(struct ieee80211_hw * hw)432 static void _rtl_pci_tx_chk_waitq(struct ieee80211_hw *hw)
433 {
434 struct rtl_priv *rtlpriv = rtl_priv(hw);
435 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
436 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
437 struct sk_buff *skb = NULL;
438 struct ieee80211_tx_info *info = NULL;
439 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
440 int tid;
441
442 if (!rtlpriv->rtlhal.earlymode_enable)
443 return;
444
445 /* we just use em for BE/BK/VI/VO */
446 for (tid = 7; tid >= 0; tid--) {
447 u8 hw_queue = ac_to_hwq[rtl_tid_to_ac(tid)];
448 struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[hw_queue];
449
450 while (!mac->act_scanning &&
451 rtlpriv->psc.rfpwr_state == ERFON) {
452 struct rtl_tcb_desc tcb_desc;
453
454 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
455
456 spin_lock(&rtlpriv->locks.waitq_lock);
457 if (!skb_queue_empty(&mac->skb_waitq[tid]) &&
458 (ring->entries - skb_queue_len(&ring->queue) >
459 rtlhal->max_earlymode_num)) {
460 skb = skb_dequeue(&mac->skb_waitq[tid]);
461 } else {
462 spin_unlock(&rtlpriv->locks.waitq_lock);
463 break;
464 }
465 spin_unlock(&rtlpriv->locks.waitq_lock);
466
467 /* Some macaddr can't do early mode. like
468 * multicast/broadcast/no_qos data
469 */
470 info = IEEE80211_SKB_CB(skb);
471 if (info->flags & IEEE80211_TX_CTL_AMPDU)
472 _rtl_update_earlymode_info(hw, skb,
473 &tcb_desc, tid);
474
475 rtlpriv->intf_ops->adapter_tx(hw, NULL, skb, &tcb_desc);
476 }
477 }
478 }
479
_rtl_pci_tx_isr(struct ieee80211_hw * hw,int prio)480 static void _rtl_pci_tx_isr(struct ieee80211_hw *hw, int prio)
481 {
482 struct rtl_priv *rtlpriv = rtl_priv(hw);
483 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
484
485 struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[prio];
486
487 while (skb_queue_len(&ring->queue)) {
488 struct sk_buff *skb;
489 struct ieee80211_tx_info *info;
490 __le16 fc;
491 u8 tid;
492 u8 *entry;
493
494 if (rtlpriv->use_new_trx_flow)
495 entry = (u8 *)(&ring->buffer_desc[ring->idx]);
496 else
497 entry = (u8 *)(&ring->desc[ring->idx]);
498
499 if (!rtlpriv->cfg->ops->is_tx_desc_closed(hw, prio, ring->idx))
500 return;
501 ring->idx = (ring->idx + 1) % ring->entries;
502
503 skb = __skb_dequeue(&ring->queue);
504 dma_unmap_single(&rtlpci->pdev->dev,
505 rtlpriv->cfg->ops->get_desc(hw, (u8 *)entry,
506 true, HW_DESC_TXBUFF_ADDR),
507 skb->len, DMA_TO_DEVICE);
508
509 /* remove early mode header */
510 if (rtlpriv->rtlhal.earlymode_enable)
511 skb_pull(skb, EM_HDR_LEN);
512
513 rtl_dbg(rtlpriv, (COMP_INTR | COMP_SEND), DBG_TRACE,
514 "new ring->idx:%d, free: skb_queue_len:%d, free: seq:%x\n",
515 ring->idx,
516 skb_queue_len(&ring->queue),
517 *(u16 *)(skb->data + 22));
518
519 if (prio == TXCMD_QUEUE) {
520 dev_kfree_skb(skb);
521 goto tx_status_ok;
522 }
523
524 /* for sw LPS, just after NULL skb send out, we can
525 * sure AP knows we are sleeping, we should not let
526 * rf sleep
527 */
528 fc = rtl_get_fc(skb);
529 if (ieee80211_is_nullfunc(fc)) {
530 if (ieee80211_has_pm(fc)) {
531 rtlpriv->mac80211.offchan_delay = true;
532 rtlpriv->psc.state_inap = true;
533 } else {
534 rtlpriv->psc.state_inap = false;
535 }
536 }
537 if (ieee80211_is_action(fc)) {
538 struct ieee80211_mgmt *action_frame =
539 (struct ieee80211_mgmt *)skb->data;
540 if (action_frame->u.action.u.ht_smps.action ==
541 WLAN_HT_ACTION_SMPS) {
542 dev_kfree_skb(skb);
543 goto tx_status_ok;
544 }
545 }
546
547 /* update tid tx pkt num */
548 tid = rtl_get_tid(skb);
549 if (tid <= 7)
550 rtlpriv->link_info.tidtx_inperiod[tid]++;
551
552 info = IEEE80211_SKB_CB(skb);
553
554 if (likely(!ieee80211_is_nullfunc(fc))) {
555 ieee80211_tx_info_clear_status(info);
556 info->flags |= IEEE80211_TX_STAT_ACK;
557 /*info->status.rates[0].count = 1; */
558 ieee80211_tx_status_irqsafe(hw, skb);
559 } else {
560 rtl_tx_ackqueue(hw, skb);
561 }
562
563 if ((ring->entries - skb_queue_len(&ring->queue)) <= 4) {
564 rtl_dbg(rtlpriv, COMP_ERR, DBG_DMESG,
565 "more desc left, wake skb_queue@%d, ring->idx = %d, skb_queue_len = 0x%x\n",
566 prio, ring->idx,
567 skb_queue_len(&ring->queue));
568
569 ieee80211_wake_queue(hw, skb_get_queue_mapping(skb));
570 }
571 tx_status_ok:
572 skb = NULL;
573 }
574
575 if (((rtlpriv->link_info.num_rx_inperiod +
576 rtlpriv->link_info.num_tx_inperiod) > 8) ||
577 rtlpriv->link_info.num_rx_inperiod > 2)
578 rtl_lps_leave(hw, false);
579 }
580
_rtl_pci_init_one_rxdesc(struct ieee80211_hw * hw,struct sk_buff * new_skb,u8 * entry,int rxring_idx,int desc_idx)581 static int _rtl_pci_init_one_rxdesc(struct ieee80211_hw *hw,
582 struct sk_buff *new_skb, u8 *entry,
583 int rxring_idx, int desc_idx)
584 {
585 struct rtl_priv *rtlpriv = rtl_priv(hw);
586 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
587 u32 bufferaddress;
588 u8 tmp_one = 1;
589 struct sk_buff *skb;
590
591 if (likely(new_skb)) {
592 skb = new_skb;
593 goto remap;
594 }
595 skb = dev_alloc_skb(rtlpci->rxbuffersize);
596 if (!skb)
597 return 0;
598
599 remap:
600 /* just set skb->cb to mapping addr for pci_unmap_single use */
601 *((dma_addr_t *)skb->cb) =
602 dma_map_single(&rtlpci->pdev->dev, skb_tail_pointer(skb),
603 rtlpci->rxbuffersize, DMA_FROM_DEVICE);
604 bufferaddress = *((dma_addr_t *)skb->cb);
605 if (dma_mapping_error(&rtlpci->pdev->dev, bufferaddress))
606 return 0;
607 rtlpci->rx_ring[rxring_idx].rx_buf[desc_idx] = skb;
608 if (rtlpriv->use_new_trx_flow) {
609 /* skb->cb may be 64 bit address */
610 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false,
611 HW_DESC_RX_PREPARE,
612 (u8 *)(dma_addr_t *)skb->cb);
613 } else {
614 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false,
615 HW_DESC_RXBUFF_ADDR,
616 (u8 *)&bufferaddress);
617 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false,
618 HW_DESC_RXPKT_LEN,
619 (u8 *)&rtlpci->rxbuffersize);
620 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false,
621 HW_DESC_RXOWN,
622 (u8 *)&tmp_one);
623 }
624 return 1;
625 }
626
627 /* inorder to receive 8K AMSDU we have set skb to
628 * 9100bytes in init rx ring, but if this packet is
629 * not a AMSDU, this large packet will be sent to
630 * TCP/IP directly, this cause big packet ping fail
631 * like: "ping -s 65507", so here we will realloc skb
632 * based on the true size of packet, Mac80211
633 * Probably will do it better, but does not yet.
634 *
635 * Some platform will fail when alloc skb sometimes.
636 * in this condition, we will send the old skb to
637 * mac80211 directly, this will not cause any other
638 * issues, but only this packet will be lost by TCP/IP
639 */
_rtl_pci_rx_to_mac80211(struct ieee80211_hw * hw,struct sk_buff * skb,struct ieee80211_rx_status rx_status)640 static void _rtl_pci_rx_to_mac80211(struct ieee80211_hw *hw,
641 struct sk_buff *skb,
642 struct ieee80211_rx_status rx_status)
643 {
644 if (unlikely(!rtl_action_proc(hw, skb, false))) {
645 dev_kfree_skb_any(skb);
646 } else {
647 struct sk_buff *uskb = NULL;
648
649 uskb = dev_alloc_skb(skb->len + 128);
650 if (likely(uskb)) {
651 memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status,
652 sizeof(rx_status));
653 skb_put_data(uskb, skb->data, skb->len);
654 dev_kfree_skb_any(skb);
655 ieee80211_rx_irqsafe(hw, uskb);
656 } else {
657 ieee80211_rx_irqsafe(hw, skb);
658 }
659 }
660 }
661
662 /*hsisr interrupt handler*/
_rtl_pci_hs_interrupt(struct ieee80211_hw * hw)663 static void _rtl_pci_hs_interrupt(struct ieee80211_hw *hw)
664 {
665 struct rtl_priv *rtlpriv = rtl_priv(hw);
666 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
667
668 rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[MAC_HSISR],
669 rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[MAC_HSISR]) |
670 rtlpci->sys_irq_mask);
671 }
672
_rtl_pci_rx_interrupt(struct ieee80211_hw * hw)673 static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw)
674 {
675 struct rtl_priv *rtlpriv = rtl_priv(hw);
676 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
677 int rxring_idx = RTL_PCI_RX_MPDU_QUEUE;
678 struct ieee80211_rx_status rx_status = { 0 };
679 unsigned int count = rtlpci->rxringcount;
680 u8 own;
681 u8 tmp_one;
682 bool unicast = false;
683 u8 hw_queue = 0;
684 unsigned int rx_remained_cnt = 0;
685 struct rtl_stats stats = {
686 .signal = 0,
687 .rate = 0,
688 };
689
690 /*RX NORMAL PKT */
691 while (count--) {
692 struct ieee80211_hdr *hdr;
693 __le16 fc;
694 u16 len;
695 /*rx buffer descriptor */
696 struct rtl_rx_buffer_desc *buffer_desc = NULL;
697 /*if use new trx flow, it means wifi info */
698 struct rtl_rx_desc *pdesc = NULL;
699 /*rx pkt */
700 struct sk_buff *skb = rtlpci->rx_ring[rxring_idx].rx_buf[
701 rtlpci->rx_ring[rxring_idx].idx];
702 struct sk_buff *new_skb;
703
704 if (rtlpriv->use_new_trx_flow) {
705 if (rx_remained_cnt == 0)
706 rx_remained_cnt =
707 rtlpriv->cfg->ops->rx_desc_buff_remained_cnt(hw,
708 hw_queue);
709 if (rx_remained_cnt == 0)
710 return;
711 buffer_desc = &rtlpci->rx_ring[rxring_idx].buffer_desc[
712 rtlpci->rx_ring[rxring_idx].idx];
713 pdesc = (struct rtl_rx_desc *)skb->data;
714 } else { /* rx descriptor */
715 pdesc = &rtlpci->rx_ring[rxring_idx].desc[
716 rtlpci->rx_ring[rxring_idx].idx];
717
718 own = (u8)rtlpriv->cfg->ops->get_desc(hw, (u8 *)pdesc,
719 false,
720 HW_DESC_OWN);
721 if (own) /* wait data to be filled by hardware */
722 return;
723 }
724
725 /* Reaching this point means: data is filled already
726 * AAAAAAttention !!!
727 * We can NOT access 'skb' before 'pci_unmap_single'
728 */
729 dma_unmap_single(&rtlpci->pdev->dev, *((dma_addr_t *)skb->cb),
730 rtlpci->rxbuffersize, DMA_FROM_DEVICE);
731
732 /* get a new skb - if fail, old one will be reused */
733 new_skb = dev_alloc_skb(rtlpci->rxbuffersize);
734 if (unlikely(!new_skb))
735 goto no_new;
736 memset(&rx_status, 0, sizeof(rx_status));
737 rtlpriv->cfg->ops->query_rx_desc(hw, &stats,
738 &rx_status, (u8 *)pdesc, skb);
739
740 if (rtlpriv->use_new_trx_flow)
741 rtlpriv->cfg->ops->rx_check_dma_ok(hw,
742 (u8 *)buffer_desc,
743 hw_queue);
744
745 len = rtlpriv->cfg->ops->get_desc(hw, (u8 *)pdesc, false,
746 HW_DESC_RXPKT_LEN);
747
748 if (skb->end - skb->tail > len) {
749 skb_put(skb, len);
750 if (rtlpriv->use_new_trx_flow)
751 skb_reserve(skb, stats.rx_drvinfo_size +
752 stats.rx_bufshift + 24);
753 else
754 skb_reserve(skb, stats.rx_drvinfo_size +
755 stats.rx_bufshift);
756 } else {
757 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING,
758 "skb->end - skb->tail = %d, len is %d\n",
759 skb->end - skb->tail, len);
760 dev_kfree_skb_any(skb);
761 goto new_trx_end;
762 }
763 /* handle command packet here */
764 if (stats.packet_report_type == C2H_PACKET) {
765 rtl_c2hcmd_enqueue(hw, skb);
766 goto new_trx_end;
767 }
768
769 /* NOTICE This can not be use for mac80211,
770 * this is done in mac80211 code,
771 * if done here sec DHCP will fail
772 * skb_trim(skb, skb->len - 4);
773 */
774
775 hdr = rtl_get_hdr(skb);
776 fc = rtl_get_fc(skb);
777
778 if (!stats.crc && !stats.hwerror && (skb->len > FCS_LEN)) {
779 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status,
780 sizeof(rx_status));
781
782 if (is_broadcast_ether_addr(hdr->addr1)) {
783 ;/*TODO*/
784 } else if (is_multicast_ether_addr(hdr->addr1)) {
785 ;/*TODO*/
786 } else {
787 unicast = true;
788 rtlpriv->stats.rxbytesunicast += skb->len;
789 }
790 rtl_is_special_data(hw, skb, false, true);
791
792 if (ieee80211_is_data(fc)) {
793 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
794 if (unicast)
795 rtlpriv->link_info.num_rx_inperiod++;
796 }
797
798 rtl_collect_scan_list(hw, skb);
799
800 /* static bcn for roaming */
801 rtl_beacon_statistic(hw, skb);
802 rtl_p2p_info(hw, (void *)skb->data, skb->len);
803 /* for sw lps */
804 rtl_swlps_beacon(hw, (void *)skb->data, skb->len);
805 rtl_recognize_peer(hw, (void *)skb->data, skb->len);
806 if (rtlpriv->mac80211.opmode == NL80211_IFTYPE_AP &&
807 rtlpriv->rtlhal.current_bandtype == BAND_ON_2_4G &&
808 (ieee80211_is_beacon(fc) ||
809 ieee80211_is_probe_resp(fc))) {
810 dev_kfree_skb_any(skb);
811 } else {
812 _rtl_pci_rx_to_mac80211(hw, skb, rx_status);
813 }
814 } else {
815 /* drop packets with errors or those too short */
816 dev_kfree_skb_any(skb);
817 }
818 new_trx_end:
819 if (rtlpriv->use_new_trx_flow) {
820 rtlpci->rx_ring[hw_queue].next_rx_rp += 1;
821 rtlpci->rx_ring[hw_queue].next_rx_rp %=
822 RTL_PCI_MAX_RX_COUNT;
823
824 rx_remained_cnt--;
825 rtl_write_word(rtlpriv, 0x3B4,
826 rtlpci->rx_ring[hw_queue].next_rx_rp);
827 }
828 if (((rtlpriv->link_info.num_rx_inperiod +
829 rtlpriv->link_info.num_tx_inperiod) > 8) ||
830 rtlpriv->link_info.num_rx_inperiod > 2)
831 rtl_lps_leave(hw, false);
832 skb = new_skb;
833 no_new:
834 if (rtlpriv->use_new_trx_flow) {
835 _rtl_pci_init_one_rxdesc(hw, skb, (u8 *)buffer_desc,
836 rxring_idx,
837 rtlpci->rx_ring[rxring_idx].idx);
838 } else {
839 _rtl_pci_init_one_rxdesc(hw, skb, (u8 *)pdesc,
840 rxring_idx,
841 rtlpci->rx_ring[rxring_idx].idx);
842 if (rtlpci->rx_ring[rxring_idx].idx ==
843 rtlpci->rxringcount - 1)
844 rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc,
845 false,
846 HW_DESC_RXERO,
847 (u8 *)&tmp_one);
848 }
849 rtlpci->rx_ring[rxring_idx].idx =
850 (rtlpci->rx_ring[rxring_idx].idx + 1) %
851 rtlpci->rxringcount;
852 }
853 }
854
_rtl_pci_interrupt(int irq,void * dev_id)855 static irqreturn_t _rtl_pci_interrupt(int irq, void *dev_id)
856 {
857 struct ieee80211_hw *hw = dev_id;
858 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
859 struct rtl_priv *rtlpriv = rtl_priv(hw);
860 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
861 unsigned long flags;
862 struct rtl_int intvec = {0};
863
864 irqreturn_t ret = IRQ_HANDLED;
865
866 if (rtlpci->irq_enabled == 0)
867 return ret;
868
869 spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags);
870 rtlpriv->cfg->ops->disable_interrupt(hw);
871
872 /*read ISR: 4/8bytes */
873 rtlpriv->cfg->ops->interrupt_recognized(hw, &intvec);
874
875 /*Shared IRQ or HW disappeared */
876 if (!intvec.inta || intvec.inta == 0xffff)
877 goto done;
878
879 /*<1> beacon related */
880 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_TBDOK])
881 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE,
882 "beacon ok interrupt!\n");
883
884 if (unlikely(intvec.inta & rtlpriv->cfg->maps[RTL_IMR_TBDER]))
885 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE,
886 "beacon err interrupt!\n");
887
888 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_BDOK])
889 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, "beacon interrupt!\n");
890
891 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_BCNINT]) {
892 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE,
893 "prepare beacon for interrupt!\n");
894 tasklet_schedule(&rtlpriv->works.irq_prepare_bcn_tasklet);
895 }
896
897 /*<2> Tx related */
898 if (unlikely(intvec.intb & rtlpriv->cfg->maps[RTL_IMR_TXFOVW]))
899 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, "IMR_TXFOVW!\n");
900
901 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_MGNTDOK]) {
902 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE,
903 "Manage ok interrupt!\n");
904 _rtl_pci_tx_isr(hw, MGNT_QUEUE);
905 }
906
907 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_HIGHDOK]) {
908 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE,
909 "HIGH_QUEUE ok interrupt!\n");
910 _rtl_pci_tx_isr(hw, HIGH_QUEUE);
911 }
912
913 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_BKDOK]) {
914 rtlpriv->link_info.num_tx_inperiod++;
915
916 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE,
917 "BK Tx OK interrupt!\n");
918 _rtl_pci_tx_isr(hw, BK_QUEUE);
919 }
920
921 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_BEDOK]) {
922 rtlpriv->link_info.num_tx_inperiod++;
923
924 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE,
925 "BE TX OK interrupt!\n");
926 _rtl_pci_tx_isr(hw, BE_QUEUE);
927 }
928
929 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_VIDOK]) {
930 rtlpriv->link_info.num_tx_inperiod++;
931
932 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE,
933 "VI TX OK interrupt!\n");
934 _rtl_pci_tx_isr(hw, VI_QUEUE);
935 }
936
937 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_VODOK]) {
938 rtlpriv->link_info.num_tx_inperiod++;
939
940 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE,
941 "Vo TX OK interrupt!\n");
942 _rtl_pci_tx_isr(hw, VO_QUEUE);
943 }
944
945 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8822BE) {
946 if (intvec.intd & rtlpriv->cfg->maps[RTL_IMR_H2CDOK]) {
947 rtlpriv->link_info.num_tx_inperiod++;
948
949 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE,
950 "H2C TX OK interrupt!\n");
951 _rtl_pci_tx_isr(hw, H2C_QUEUE);
952 }
953 }
954
955 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE) {
956 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_COMDOK]) {
957 rtlpriv->link_info.num_tx_inperiod++;
958
959 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE,
960 "CMD TX OK interrupt!\n");
961 _rtl_pci_tx_isr(hw, TXCMD_QUEUE);
962 }
963 }
964
965 /*<3> Rx related */
966 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_ROK]) {
967 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, "Rx ok interrupt!\n");
968 _rtl_pci_rx_interrupt(hw);
969 }
970
971 if (unlikely(intvec.inta & rtlpriv->cfg->maps[RTL_IMR_RDU])) {
972 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING,
973 "rx descriptor unavailable!\n");
974 _rtl_pci_rx_interrupt(hw);
975 }
976
977 if (unlikely(intvec.intb & rtlpriv->cfg->maps[RTL_IMR_RXFOVW])) {
978 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, "rx overflow !\n");
979 _rtl_pci_rx_interrupt(hw);
980 }
981
982 /*<4> fw related*/
983 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8723AE) {
984 if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_C2HCMD]) {
985 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE,
986 "firmware interrupt!\n");
987 queue_delayed_work(rtlpriv->works.rtl_wq,
988 &rtlpriv->works.fwevt_wq, 0);
989 }
990 }
991
992 /*<5> hsisr related*/
993 /* Only 8188EE & 8723BE Supported.
994 * If Other ICs Come in, System will corrupt,
995 * because maps[RTL_IMR_HSISR_IND] & maps[MAC_HSISR]
996 * are not initialized
997 */
998 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8188EE ||
999 rtlhal->hw_type == HARDWARE_TYPE_RTL8723BE) {
1000 if (unlikely(intvec.inta &
1001 rtlpriv->cfg->maps[RTL_IMR_HSISR_IND])) {
1002 rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE,
1003 "hsisr interrupt!\n");
1004 _rtl_pci_hs_interrupt(hw);
1005 }
1006 }
1007
1008 if (rtlpriv->rtlhal.earlymode_enable)
1009 tasklet_schedule(&rtlpriv->works.irq_tasklet);
1010
1011 done:
1012 rtlpriv->cfg->ops->enable_interrupt(hw);
1013 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
1014 return ret;
1015 }
1016
_rtl_pci_irq_tasklet(struct tasklet_struct * t)1017 static void _rtl_pci_irq_tasklet(struct tasklet_struct *t)
1018 {
1019 struct rtl_priv *rtlpriv = from_tasklet(rtlpriv, t, works.irq_tasklet);
1020 struct ieee80211_hw *hw = rtlpriv->hw;
1021 _rtl_pci_tx_chk_waitq(hw);
1022 }
1023
_rtl_pci_prepare_bcn_tasklet(struct tasklet_struct * t)1024 static void _rtl_pci_prepare_bcn_tasklet(struct tasklet_struct *t)
1025 {
1026 struct rtl_priv *rtlpriv = from_tasklet(rtlpriv, t,
1027 works.irq_prepare_bcn_tasklet);
1028 struct ieee80211_hw *hw = rtlpriv->hw;
1029 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1030 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1031 struct rtl8192_tx_ring *ring = NULL;
1032 struct ieee80211_hdr *hdr = NULL;
1033 struct ieee80211_tx_info *info = NULL;
1034 struct sk_buff *pskb = NULL;
1035 struct rtl_tx_desc *pdesc = NULL;
1036 struct rtl_tcb_desc tcb_desc;
1037 /*This is for new trx flow*/
1038 struct rtl_tx_buffer_desc *pbuffer_desc = NULL;
1039 u8 temp_one = 1;
1040 u8 *entry;
1041
1042 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
1043 ring = &rtlpci->tx_ring[BEACON_QUEUE];
1044 pskb = __skb_dequeue(&ring->queue);
1045 if (rtlpriv->use_new_trx_flow)
1046 entry = (u8 *)(&ring->buffer_desc[ring->idx]);
1047 else
1048 entry = (u8 *)(&ring->desc[ring->idx]);
1049 if (pskb) {
1050 dma_unmap_single(&rtlpci->pdev->dev,
1051 rtlpriv->cfg->ops->get_desc(hw, (u8 *)entry,
1052 true, HW_DESC_TXBUFF_ADDR),
1053 pskb->len, DMA_TO_DEVICE);
1054 kfree_skb(pskb);
1055 }
1056
1057 /*NB: the beacon data buffer must be 32-bit aligned. */
1058 pskb = ieee80211_beacon_get(hw, mac->vif, 0);
1059 if (!pskb)
1060 return;
1061 hdr = rtl_get_hdr(pskb);
1062 info = IEEE80211_SKB_CB(pskb);
1063 pdesc = &ring->desc[0];
1064 if (rtlpriv->use_new_trx_flow)
1065 pbuffer_desc = &ring->buffer_desc[0];
1066
1067 rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc,
1068 (u8 *)pbuffer_desc, info, NULL, pskb,
1069 BEACON_QUEUE, &tcb_desc);
1070
1071 __skb_queue_tail(&ring->queue, pskb);
1072
1073 if (rtlpriv->use_new_trx_flow) {
1074 temp_one = 4;
1075 rtlpriv->cfg->ops->set_desc(hw, (u8 *)pbuffer_desc, true,
1076 HW_DESC_OWN, (u8 *)&temp_one);
1077 } else {
1078 rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, true, HW_DESC_OWN,
1079 &temp_one);
1080 }
1081 }
1082
_rtl_pci_init_trx_var(struct ieee80211_hw * hw)1083 static void _rtl_pci_init_trx_var(struct ieee80211_hw *hw)
1084 {
1085 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1086 struct rtl_priv *rtlpriv = rtl_priv(hw);
1087 struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
1088 u8 i;
1089 u16 desc_num;
1090
1091 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192EE)
1092 desc_num = TX_DESC_NUM_92E;
1093 else if (rtlhal->hw_type == HARDWARE_TYPE_RTL8822BE)
1094 desc_num = TX_DESC_NUM_8822B;
1095 else
1096 desc_num = RT_TXDESC_NUM;
1097
1098 for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++)
1099 rtlpci->txringcount[i] = desc_num;
1100
1101 /*we just alloc 2 desc for beacon queue,
1102 *because we just need first desc in hw beacon.
1103 */
1104 rtlpci->txringcount[BEACON_QUEUE] = 2;
1105
1106 /*BE queue need more descriptor for performance
1107 *consideration or, No more tx desc will happen,
1108 *and may cause mac80211 mem leakage.
1109 */
1110 if (!rtl_priv(hw)->use_new_trx_flow)
1111 rtlpci->txringcount[BE_QUEUE] = RT_TXDESC_NUM_BE_QUEUE;
1112
1113 rtlpci->rxbuffersize = 9100; /*2048/1024; */
1114 rtlpci->rxringcount = RTL_PCI_MAX_RX_COUNT; /*64; */
1115 }
1116
_rtl_pci_init_struct(struct ieee80211_hw * hw,struct pci_dev * pdev)1117 static void _rtl_pci_init_struct(struct ieee80211_hw *hw,
1118 struct pci_dev *pdev)
1119 {
1120 struct rtl_priv *rtlpriv = rtl_priv(hw);
1121 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1122 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1123 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1124
1125 rtlpci->up_first_time = true;
1126 rtlpci->being_init_adapter = false;
1127
1128 rtlhal->hw = hw;
1129 rtlpci->pdev = pdev;
1130
1131 /*Tx/Rx related var */
1132 _rtl_pci_init_trx_var(hw);
1133
1134 /*IBSS*/
1135 mac->beacon_interval = 100;
1136
1137 /*AMPDU*/
1138 mac->min_space_cfg = 0;
1139 mac->max_mss_density = 0;
1140 /*set sane AMPDU defaults */
1141 mac->current_ampdu_density = 7;
1142 mac->current_ampdu_factor = 3;
1143
1144 /*Retry Limit*/
1145 mac->retry_short = 7;
1146 mac->retry_long = 7;
1147
1148 /*QOS*/
1149 rtlpci->acm_method = EACMWAY2_SW;
1150
1151 /*task */
1152 tasklet_setup(&rtlpriv->works.irq_tasklet, _rtl_pci_irq_tasklet);
1153 tasklet_setup(&rtlpriv->works.irq_prepare_bcn_tasklet,
1154 _rtl_pci_prepare_bcn_tasklet);
1155 INIT_WORK(&rtlpriv->works.lps_change_work,
1156 rtl_lps_change_work_callback);
1157 }
1158
_rtl_pci_init_tx_ring(struct ieee80211_hw * hw,unsigned int prio,unsigned int entries)1159 static int _rtl_pci_init_tx_ring(struct ieee80211_hw *hw,
1160 unsigned int prio, unsigned int entries)
1161 {
1162 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1163 struct rtl_priv *rtlpriv = rtl_priv(hw);
1164 struct rtl_tx_buffer_desc *buffer_desc;
1165 struct rtl_tx_desc *desc;
1166 dma_addr_t buffer_desc_dma, desc_dma;
1167 u32 nextdescaddress;
1168 int i;
1169
1170 /* alloc tx buffer desc for new trx flow*/
1171 if (rtlpriv->use_new_trx_flow) {
1172 buffer_desc =
1173 dma_alloc_coherent(&rtlpci->pdev->dev,
1174 sizeof(*buffer_desc) * entries,
1175 &buffer_desc_dma, GFP_KERNEL);
1176
1177 if (!buffer_desc || (unsigned long)buffer_desc & 0xFF) {
1178 pr_err("Cannot allocate TX ring (prio = %d)\n",
1179 prio);
1180 return -ENOMEM;
1181 }
1182
1183 rtlpci->tx_ring[prio].buffer_desc = buffer_desc;
1184 rtlpci->tx_ring[prio].buffer_desc_dma = buffer_desc_dma;
1185
1186 rtlpci->tx_ring[prio].cur_tx_rp = 0;
1187 rtlpci->tx_ring[prio].cur_tx_wp = 0;
1188 }
1189
1190 /* alloc dma for this ring */
1191 desc = dma_alloc_coherent(&rtlpci->pdev->dev, sizeof(*desc) * entries,
1192 &desc_dma, GFP_KERNEL);
1193
1194 if (!desc || (unsigned long)desc & 0xFF) {
1195 pr_err("Cannot allocate TX ring (prio = %d)\n", prio);
1196 return -ENOMEM;
1197 }
1198
1199 rtlpci->tx_ring[prio].desc = desc;
1200 rtlpci->tx_ring[prio].dma = desc_dma;
1201
1202 rtlpci->tx_ring[prio].idx = 0;
1203 rtlpci->tx_ring[prio].entries = entries;
1204 skb_queue_head_init(&rtlpci->tx_ring[prio].queue);
1205
1206 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "queue:%d, ring_addr:%p\n",
1207 prio, desc);
1208
1209 /* init every desc in this ring */
1210 if (!rtlpriv->use_new_trx_flow) {
1211 for (i = 0; i < entries; i++) {
1212 nextdescaddress = (u32)desc_dma +
1213 ((i + 1) % entries) *
1214 sizeof(*desc);
1215
1216 rtlpriv->cfg->ops->set_desc(hw, (u8 *)&desc[i],
1217 true,
1218 HW_DESC_TX_NEXTDESC_ADDR,
1219 (u8 *)&nextdescaddress);
1220 }
1221 }
1222 return 0;
1223 }
1224
_rtl_pci_init_rx_ring(struct ieee80211_hw * hw,int rxring_idx)1225 static int _rtl_pci_init_rx_ring(struct ieee80211_hw *hw, int rxring_idx)
1226 {
1227 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1228 struct rtl_priv *rtlpriv = rtl_priv(hw);
1229 int i;
1230
1231 if (rtlpriv->use_new_trx_flow) {
1232 struct rtl_rx_buffer_desc *entry = NULL;
1233 /* alloc dma for this ring */
1234 rtlpci->rx_ring[rxring_idx].buffer_desc =
1235 dma_alloc_coherent(&rtlpci->pdev->dev,
1236 sizeof(*rtlpci->rx_ring[rxring_idx].buffer_desc) *
1237 rtlpci->rxringcount,
1238 &rtlpci->rx_ring[rxring_idx].dma, GFP_KERNEL);
1239 if (!rtlpci->rx_ring[rxring_idx].buffer_desc ||
1240 (ulong)rtlpci->rx_ring[rxring_idx].buffer_desc & 0xFF) {
1241 pr_err("Cannot allocate RX ring\n");
1242 return -ENOMEM;
1243 }
1244
1245 /* init every desc in this ring */
1246 rtlpci->rx_ring[rxring_idx].idx = 0;
1247 for (i = 0; i < rtlpci->rxringcount; i++) {
1248 entry = &rtlpci->rx_ring[rxring_idx].buffer_desc[i];
1249 if (!_rtl_pci_init_one_rxdesc(hw, NULL, (u8 *)entry,
1250 rxring_idx, i))
1251 return -ENOMEM;
1252 }
1253 } else {
1254 struct rtl_rx_desc *entry = NULL;
1255 u8 tmp_one = 1;
1256 /* alloc dma for this ring */
1257 rtlpci->rx_ring[rxring_idx].desc =
1258 dma_alloc_coherent(&rtlpci->pdev->dev,
1259 sizeof(*rtlpci->rx_ring[rxring_idx].desc) *
1260 rtlpci->rxringcount,
1261 &rtlpci->rx_ring[rxring_idx].dma, GFP_KERNEL);
1262 if (!rtlpci->rx_ring[rxring_idx].desc ||
1263 (unsigned long)rtlpci->rx_ring[rxring_idx].desc & 0xFF) {
1264 pr_err("Cannot allocate RX ring\n");
1265 return -ENOMEM;
1266 }
1267
1268 /* init every desc in this ring */
1269 rtlpci->rx_ring[rxring_idx].idx = 0;
1270
1271 for (i = 0; i < rtlpci->rxringcount; i++) {
1272 entry = &rtlpci->rx_ring[rxring_idx].desc[i];
1273 if (!_rtl_pci_init_one_rxdesc(hw, NULL, (u8 *)entry,
1274 rxring_idx, i))
1275 return -ENOMEM;
1276 }
1277
1278 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false,
1279 HW_DESC_RXERO, &tmp_one);
1280 }
1281 return 0;
1282 }
1283
_rtl_pci_free_tx_ring(struct ieee80211_hw * hw,unsigned int prio)1284 static void _rtl_pci_free_tx_ring(struct ieee80211_hw *hw,
1285 unsigned int prio)
1286 {
1287 struct rtl_priv *rtlpriv = rtl_priv(hw);
1288 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1289 struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[prio];
1290
1291 /* free every desc in this ring */
1292 while (skb_queue_len(&ring->queue)) {
1293 u8 *entry;
1294 struct sk_buff *skb = __skb_dequeue(&ring->queue);
1295
1296 if (rtlpriv->use_new_trx_flow)
1297 entry = (u8 *)(&ring->buffer_desc[ring->idx]);
1298 else
1299 entry = (u8 *)(&ring->desc[ring->idx]);
1300
1301 dma_unmap_single(&rtlpci->pdev->dev,
1302 rtlpriv->cfg->ops->get_desc(hw, (u8 *)entry,
1303 true, HW_DESC_TXBUFF_ADDR),
1304 skb->len, DMA_TO_DEVICE);
1305 kfree_skb(skb);
1306 ring->idx = (ring->idx + 1) % ring->entries;
1307 }
1308
1309 /* free dma of this ring */
1310 dma_free_coherent(&rtlpci->pdev->dev,
1311 sizeof(*ring->desc) * ring->entries, ring->desc,
1312 ring->dma);
1313 ring->desc = NULL;
1314 if (rtlpriv->use_new_trx_flow) {
1315 dma_free_coherent(&rtlpci->pdev->dev,
1316 sizeof(*ring->buffer_desc) * ring->entries,
1317 ring->buffer_desc, ring->buffer_desc_dma);
1318 ring->buffer_desc = NULL;
1319 }
1320 }
1321
_rtl_pci_free_rx_ring(struct ieee80211_hw * hw,int rxring_idx)1322 static void _rtl_pci_free_rx_ring(struct ieee80211_hw *hw, int rxring_idx)
1323 {
1324 struct rtl_priv *rtlpriv = rtl_priv(hw);
1325 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1326 int i;
1327
1328 /* free every desc in this ring */
1329 for (i = 0; i < rtlpci->rxringcount; i++) {
1330 struct sk_buff *skb = rtlpci->rx_ring[rxring_idx].rx_buf[i];
1331
1332 if (!skb)
1333 continue;
1334 dma_unmap_single(&rtlpci->pdev->dev, *((dma_addr_t *)skb->cb),
1335 rtlpci->rxbuffersize, DMA_FROM_DEVICE);
1336 kfree_skb(skb);
1337 }
1338
1339 /* free dma of this ring */
1340 if (rtlpriv->use_new_trx_flow) {
1341 dma_free_coherent(&rtlpci->pdev->dev,
1342 sizeof(*rtlpci->rx_ring[rxring_idx].buffer_desc) *
1343 rtlpci->rxringcount,
1344 rtlpci->rx_ring[rxring_idx].buffer_desc,
1345 rtlpci->rx_ring[rxring_idx].dma);
1346 rtlpci->rx_ring[rxring_idx].buffer_desc = NULL;
1347 } else {
1348 dma_free_coherent(&rtlpci->pdev->dev,
1349 sizeof(*rtlpci->rx_ring[rxring_idx].desc) *
1350 rtlpci->rxringcount,
1351 rtlpci->rx_ring[rxring_idx].desc,
1352 rtlpci->rx_ring[rxring_idx].dma);
1353 rtlpci->rx_ring[rxring_idx].desc = NULL;
1354 }
1355 }
1356
_rtl_pci_init_trx_ring(struct ieee80211_hw * hw)1357 static int _rtl_pci_init_trx_ring(struct ieee80211_hw *hw)
1358 {
1359 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1360 int ret;
1361 int i, rxring_idx;
1362
1363 /* rxring_idx 0:RX_MPDU_QUEUE
1364 * rxring_idx 1:RX_CMD_QUEUE
1365 */
1366 for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++) {
1367 ret = _rtl_pci_init_rx_ring(hw, rxring_idx);
1368 if (ret)
1369 return ret;
1370 }
1371
1372 for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) {
1373 ret = _rtl_pci_init_tx_ring(hw, i, rtlpci->txringcount[i]);
1374 if (ret)
1375 goto err_free_rings;
1376 }
1377
1378 return 0;
1379
1380 err_free_rings:
1381 for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++)
1382 _rtl_pci_free_rx_ring(hw, rxring_idx);
1383
1384 for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++)
1385 if (rtlpci->tx_ring[i].desc ||
1386 rtlpci->tx_ring[i].buffer_desc)
1387 _rtl_pci_free_tx_ring(hw, i);
1388
1389 return 1;
1390 }
1391
_rtl_pci_deinit_trx_ring(struct ieee80211_hw * hw)1392 static int _rtl_pci_deinit_trx_ring(struct ieee80211_hw *hw)
1393 {
1394 u32 i, rxring_idx;
1395
1396 /*free rx rings */
1397 for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++)
1398 _rtl_pci_free_rx_ring(hw, rxring_idx);
1399
1400 /*free tx rings */
1401 for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++)
1402 _rtl_pci_free_tx_ring(hw, i);
1403
1404 return 0;
1405 }
1406
rtl_pci_reset_trx_ring(struct ieee80211_hw * hw)1407 int rtl_pci_reset_trx_ring(struct ieee80211_hw *hw)
1408 {
1409 struct rtl_priv *rtlpriv = rtl_priv(hw);
1410 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1411 int i, rxring_idx;
1412 unsigned long flags;
1413 u8 tmp_one = 1;
1414 u32 bufferaddress;
1415 /* rxring_idx 0:RX_MPDU_QUEUE */
1416 /* rxring_idx 1:RX_CMD_QUEUE */
1417 for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++) {
1418 /* force the rx_ring[RX_MPDU_QUEUE/
1419 * RX_CMD_QUEUE].idx to the first one
1420 *new trx flow, do nothing
1421 */
1422 if (!rtlpriv->use_new_trx_flow &&
1423 rtlpci->rx_ring[rxring_idx].desc) {
1424 struct rtl_rx_desc *entry = NULL;
1425
1426 rtlpci->rx_ring[rxring_idx].idx = 0;
1427 for (i = 0; i < rtlpci->rxringcount; i++) {
1428 entry = &rtlpci->rx_ring[rxring_idx].desc[i];
1429 bufferaddress =
1430 rtlpriv->cfg->ops->get_desc(hw, (u8 *)entry,
1431 false, HW_DESC_RXBUFF_ADDR);
1432 memset((u8 *)entry, 0,
1433 sizeof(*rtlpci->rx_ring
1434 [rxring_idx].desc));/*clear one entry*/
1435 if (rtlpriv->use_new_trx_flow) {
1436 rtlpriv->cfg->ops->set_desc(hw,
1437 (u8 *)entry, false,
1438 HW_DESC_RX_PREPARE,
1439 (u8 *)&bufferaddress);
1440 } else {
1441 rtlpriv->cfg->ops->set_desc(hw,
1442 (u8 *)entry, false,
1443 HW_DESC_RXBUFF_ADDR,
1444 (u8 *)&bufferaddress);
1445 rtlpriv->cfg->ops->set_desc(hw,
1446 (u8 *)entry, false,
1447 HW_DESC_RXPKT_LEN,
1448 (u8 *)&rtlpci->rxbuffersize);
1449 rtlpriv->cfg->ops->set_desc(hw,
1450 (u8 *)entry, false,
1451 HW_DESC_RXOWN,
1452 (u8 *)&tmp_one);
1453 }
1454 }
1455 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false,
1456 HW_DESC_RXERO, (u8 *)&tmp_one);
1457 }
1458 rtlpci->rx_ring[rxring_idx].idx = 0;
1459 }
1460
1461 /*after reset, release previous pending packet,
1462 *and force the tx idx to the first one
1463 */
1464 spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags);
1465 for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) {
1466 if (rtlpci->tx_ring[i].desc ||
1467 rtlpci->tx_ring[i].buffer_desc) {
1468 struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[i];
1469
1470 while (skb_queue_len(&ring->queue)) {
1471 u8 *entry;
1472 struct sk_buff *skb =
1473 __skb_dequeue(&ring->queue);
1474 if (rtlpriv->use_new_trx_flow)
1475 entry = (u8 *)(&ring->buffer_desc
1476 [ring->idx]);
1477 else
1478 entry = (u8 *)(&ring->desc[ring->idx]);
1479
1480 dma_unmap_single(&rtlpci->pdev->dev,
1481 rtlpriv->cfg->ops->get_desc(hw, (u8 *)entry,
1482 true, HW_DESC_TXBUFF_ADDR),
1483 skb->len, DMA_TO_DEVICE);
1484 dev_kfree_skb_irq(skb);
1485 ring->idx = (ring->idx + 1) % ring->entries;
1486 }
1487
1488 if (rtlpriv->use_new_trx_flow) {
1489 rtlpci->tx_ring[i].cur_tx_rp = 0;
1490 rtlpci->tx_ring[i].cur_tx_wp = 0;
1491 }
1492
1493 ring->idx = 0;
1494 ring->entries = rtlpci->txringcount[i];
1495 }
1496 }
1497 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
1498
1499 return 0;
1500 }
1501
rtl_pci_tx_chk_waitq_insert(struct ieee80211_hw * hw,struct ieee80211_sta * sta,struct sk_buff * skb)1502 static bool rtl_pci_tx_chk_waitq_insert(struct ieee80211_hw *hw,
1503 struct ieee80211_sta *sta,
1504 struct sk_buff *skb)
1505 {
1506 struct rtl_priv *rtlpriv = rtl_priv(hw);
1507 struct rtl_sta_info *sta_entry = NULL;
1508 u8 tid = rtl_get_tid(skb);
1509 __le16 fc = rtl_get_fc(skb);
1510
1511 if (!sta)
1512 return false;
1513 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1514
1515 if (!rtlpriv->rtlhal.earlymode_enable)
1516 return false;
1517 if (ieee80211_is_nullfunc(fc))
1518 return false;
1519 if (ieee80211_is_qos_nullfunc(fc))
1520 return false;
1521 if (ieee80211_is_pspoll(fc))
1522 return false;
1523 if (sta_entry->tids[tid].agg.agg_state != RTL_AGG_OPERATIONAL)
1524 return false;
1525 if (_rtl_mac_to_hwqueue(hw, skb) > VO_QUEUE)
1526 return false;
1527 if (tid > 7)
1528 return false;
1529
1530 /* maybe every tid should be checked */
1531 if (!rtlpriv->link_info.higher_busytxtraffic[tid])
1532 return false;
1533
1534 spin_lock_bh(&rtlpriv->locks.waitq_lock);
1535 skb_queue_tail(&rtlpriv->mac80211.skb_waitq[tid], skb);
1536 spin_unlock_bh(&rtlpriv->locks.waitq_lock);
1537
1538 return true;
1539 }
1540
rtl_pci_tx(struct ieee80211_hw * hw,struct ieee80211_sta * sta,struct sk_buff * skb,struct rtl_tcb_desc * ptcb_desc)1541 static int rtl_pci_tx(struct ieee80211_hw *hw,
1542 struct ieee80211_sta *sta,
1543 struct sk_buff *skb,
1544 struct rtl_tcb_desc *ptcb_desc)
1545 {
1546 struct rtl_priv *rtlpriv = rtl_priv(hw);
1547 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1548 struct rtl8192_tx_ring *ring;
1549 struct rtl_tx_desc *pdesc;
1550 struct rtl_tx_buffer_desc *ptx_bd_desc = NULL;
1551 u16 idx;
1552 u8 hw_queue = _rtl_mac_to_hwqueue(hw, skb);
1553 unsigned long flags;
1554 struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
1555 __le16 fc = rtl_get_fc(skb);
1556 u8 *pda_addr = hdr->addr1;
1557 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1558 u8 own;
1559 u8 temp_one = 1;
1560
1561 if (ieee80211_is_mgmt(fc))
1562 rtl_tx_mgmt_proc(hw, skb);
1563
1564 if (rtlpriv->psc.sw_ps_enabled) {
1565 if (ieee80211_is_data(fc) && !ieee80211_is_nullfunc(fc) &&
1566 !ieee80211_has_pm(fc))
1567 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1568 }
1569
1570 rtl_action_proc(hw, skb, true);
1571
1572 if (is_multicast_ether_addr(pda_addr))
1573 rtlpriv->stats.txbytesmulticast += skb->len;
1574 else if (is_broadcast_ether_addr(pda_addr))
1575 rtlpriv->stats.txbytesbroadcast += skb->len;
1576 else
1577 rtlpriv->stats.txbytesunicast += skb->len;
1578
1579 spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags);
1580 ring = &rtlpci->tx_ring[hw_queue];
1581 if (hw_queue != BEACON_QUEUE) {
1582 if (rtlpriv->use_new_trx_flow)
1583 idx = ring->cur_tx_wp;
1584 else
1585 idx = (ring->idx + skb_queue_len(&ring->queue)) %
1586 ring->entries;
1587 } else {
1588 idx = 0;
1589 }
1590
1591 pdesc = &ring->desc[idx];
1592 if (rtlpriv->use_new_trx_flow) {
1593 ptx_bd_desc = &ring->buffer_desc[idx];
1594 } else {
1595 own = (u8)rtlpriv->cfg->ops->get_desc(hw, (u8 *)pdesc,
1596 true, HW_DESC_OWN);
1597
1598 if (own == 1 && hw_queue != BEACON_QUEUE) {
1599 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING,
1600 "No more TX desc@%d, ring->idx = %d, idx = %d, skb_queue_len = 0x%x\n",
1601 hw_queue, ring->idx, idx,
1602 skb_queue_len(&ring->queue));
1603
1604 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock,
1605 flags);
1606 return skb->len;
1607 }
1608 }
1609
1610 if (rtlpriv->cfg->ops->get_available_desc &&
1611 rtlpriv->cfg->ops->get_available_desc(hw, hw_queue) == 0) {
1612 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING,
1613 "get_available_desc fail\n");
1614 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
1615 return skb->len;
1616 }
1617
1618 if (ieee80211_is_data(fc))
1619 rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
1620
1621 rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc,
1622 (u8 *)ptx_bd_desc, info, sta, skb, hw_queue, ptcb_desc);
1623
1624 __skb_queue_tail(&ring->queue, skb);
1625
1626 if (rtlpriv->use_new_trx_flow) {
1627 rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, true,
1628 HW_DESC_OWN, &hw_queue);
1629 } else {
1630 rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, true,
1631 HW_DESC_OWN, &temp_one);
1632 }
1633
1634 if ((ring->entries - skb_queue_len(&ring->queue)) < 2 &&
1635 hw_queue != BEACON_QUEUE) {
1636 rtl_dbg(rtlpriv, COMP_ERR, DBG_LOUD,
1637 "less desc left, stop skb_queue@%d, ring->idx = %d, idx = %d, skb_queue_len = 0x%x\n",
1638 hw_queue, ring->idx, idx,
1639 skb_queue_len(&ring->queue));
1640
1641 ieee80211_stop_queue(hw, skb_get_queue_mapping(skb));
1642 }
1643
1644 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
1645
1646 rtlpriv->cfg->ops->tx_polling(hw, hw_queue);
1647
1648 return 0;
1649 }
1650
rtl_pci_flush(struct ieee80211_hw * hw,u32 queues,bool drop)1651 static void rtl_pci_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
1652 {
1653 struct rtl_priv *rtlpriv = rtl_priv(hw);
1654 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
1655 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1656 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1657 u16 i = 0;
1658 int queue_id;
1659 struct rtl8192_tx_ring *ring;
1660
1661 if (mac->skip_scan)
1662 return;
1663
1664 for (queue_id = RTL_PCI_MAX_TX_QUEUE_COUNT - 1; queue_id >= 0;) {
1665 u32 queue_len;
1666
1667 if (((queues >> queue_id) & 0x1) == 0) {
1668 queue_id--;
1669 continue;
1670 }
1671 ring = &pcipriv->dev.tx_ring[queue_id];
1672 queue_len = skb_queue_len(&ring->queue);
1673 if (queue_len == 0 || queue_id == BEACON_QUEUE ||
1674 queue_id == TXCMD_QUEUE) {
1675 queue_id--;
1676 continue;
1677 } else {
1678 msleep(20);
1679 i++;
1680 }
1681
1682 /* we just wait 1s for all queues */
1683 if (rtlpriv->psc.rfpwr_state == ERFOFF ||
1684 is_hal_stop(rtlhal) || i >= 200)
1685 return;
1686 }
1687 }
1688
rtl_pci_deinit(struct ieee80211_hw * hw)1689 static void rtl_pci_deinit(struct ieee80211_hw *hw)
1690 {
1691 struct rtl_priv *rtlpriv = rtl_priv(hw);
1692 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1693
1694 _rtl_pci_deinit_trx_ring(hw);
1695
1696 synchronize_irq(rtlpci->pdev->irq);
1697 tasklet_kill(&rtlpriv->works.irq_tasklet);
1698 cancel_work_sync(&rtlpriv->works.lps_change_work);
1699
1700 destroy_workqueue(rtlpriv->works.rtl_wq);
1701 }
1702
rtl_pci_init(struct ieee80211_hw * hw,struct pci_dev * pdev)1703 static int rtl_pci_init(struct ieee80211_hw *hw, struct pci_dev *pdev)
1704 {
1705 int err;
1706
1707 _rtl_pci_init_struct(hw, pdev);
1708
1709 err = _rtl_pci_init_trx_ring(hw);
1710 if (err) {
1711 pr_err("tx ring initialization failed\n");
1712 return err;
1713 }
1714
1715 return 0;
1716 }
1717
rtl_pci_start(struct ieee80211_hw * hw)1718 static int rtl_pci_start(struct ieee80211_hw *hw)
1719 {
1720 struct rtl_priv *rtlpriv = rtl_priv(hw);
1721 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1722 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1723 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1724 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
1725 struct rtl_btc_ops *btc_ops = rtlpriv->btcoexist.btc_ops;
1726
1727 int err;
1728
1729 rtl_pci_reset_trx_ring(hw);
1730
1731 rtlpci->driver_is_goingto_unload = false;
1732 if (rtlpriv->cfg->ops->get_btc_status &&
1733 rtlpriv->cfg->ops->get_btc_status()) {
1734 rtlpriv->btcoexist.btc_info.ap_num = 36;
1735 btc_ops->btc_init_variables(rtlpriv);
1736 btc_ops->btc_init_hal_vars(rtlpriv);
1737 } else if (btc_ops) {
1738 btc_ops->btc_init_variables_wifi_only(rtlpriv);
1739 }
1740
1741 err = rtlpriv->cfg->ops->hw_init(hw);
1742 if (err) {
1743 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
1744 "Failed to config hardware!\n");
1745 kfree(rtlpriv->btcoexist.btc_context);
1746 kfree(rtlpriv->btcoexist.wifi_only_context);
1747 return err;
1748 }
1749 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RETRY_LIMIT,
1750 &rtlmac->retry_long);
1751
1752 rtlpriv->cfg->ops->enable_interrupt(hw);
1753 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "enable_interrupt OK\n");
1754
1755 rtl_init_rx_config(hw);
1756
1757 /*should be after adapter start and interrupt enable. */
1758 set_hal_start(rtlhal);
1759
1760 RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC);
1761
1762 rtlpci->up_first_time = false;
1763
1764 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, "%s OK\n", __func__);
1765 return 0;
1766 }
1767
rtl_pci_stop(struct ieee80211_hw * hw)1768 static void rtl_pci_stop(struct ieee80211_hw *hw)
1769 {
1770 struct rtl_priv *rtlpriv = rtl_priv(hw);
1771 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1772 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1773 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1774 unsigned long flags;
1775 u8 rf_timeout = 0;
1776
1777 if (rtlpriv->cfg->ops->get_btc_status())
1778 rtlpriv->btcoexist.btc_ops->btc_halt_notify(rtlpriv);
1779
1780 if (rtlpriv->btcoexist.btc_ops)
1781 rtlpriv->btcoexist.btc_ops->btc_deinit_variables(rtlpriv);
1782
1783 /*should be before disable interrupt&adapter
1784 *and will do it immediately.
1785 */
1786 set_hal_stop(rtlhal);
1787
1788 rtlpci->driver_is_goingto_unload = true;
1789 rtlpriv->cfg->ops->disable_interrupt(hw);
1790 cancel_work_sync(&rtlpriv->works.lps_change_work);
1791
1792 spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags);
1793 while (ppsc->rfchange_inprogress) {
1794 spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags);
1795 if (rf_timeout > 100) {
1796 spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags);
1797 break;
1798 }
1799 mdelay(1);
1800 rf_timeout++;
1801 spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags);
1802 }
1803 ppsc->rfchange_inprogress = true;
1804 spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags);
1805
1806 rtlpriv->cfg->ops->hw_disable(hw);
1807 /* some things are not needed if firmware not available */
1808 if (!rtlpriv->max_fw_size)
1809 return;
1810 rtlpriv->cfg->ops->led_control(hw, LED_CTL_POWER_OFF);
1811
1812 spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags);
1813 ppsc->rfchange_inprogress = false;
1814 spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags);
1815
1816 rtl_pci_enable_aspm(hw);
1817 }
1818
_rtl_pci_find_adapter(struct pci_dev * pdev,struct ieee80211_hw * hw)1819 static bool _rtl_pci_find_adapter(struct pci_dev *pdev,
1820 struct ieee80211_hw *hw)
1821 {
1822 struct rtl_priv *rtlpriv = rtl_priv(hw);
1823 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
1824 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1825 struct pci_dev *bridge_pdev = pdev->bus->self;
1826 u16 venderid;
1827 u16 deviceid;
1828 u8 revisionid;
1829 u16 irqline;
1830 u8 tmp;
1831
1832 pcipriv->ndis_adapter.pcibridge_vendor = PCI_BRIDGE_VENDOR_UNKNOWN;
1833 venderid = pdev->vendor;
1834 deviceid = pdev->device;
1835 pci_read_config_byte(pdev, 0x8, &revisionid);
1836 pci_read_config_word(pdev, 0x3C, &irqline);
1837
1838 /* PCI ID 0x10ec:0x8192 occurs for both RTL8192E, which uses
1839 * r8192e_pci, and RTL8192SE, which uses this driver. If the
1840 * revision ID is RTL_PCI_REVISION_ID_8192PCIE (0x01), then
1841 * the correct driver is r8192e_pci, thus this routine should
1842 * return false.
1843 */
1844 if (deviceid == RTL_PCI_8192SE_DID &&
1845 revisionid == RTL_PCI_REVISION_ID_8192PCIE)
1846 return false;
1847
1848 if (deviceid == RTL_PCI_8192_DID ||
1849 deviceid == RTL_PCI_0044_DID ||
1850 deviceid == RTL_PCI_0047_DID ||
1851 deviceid == RTL_PCI_8192SE_DID ||
1852 deviceid == RTL_PCI_8174_DID ||
1853 deviceid == RTL_PCI_8173_DID ||
1854 deviceid == RTL_PCI_8172_DID ||
1855 deviceid == RTL_PCI_8171_DID) {
1856 switch (revisionid) {
1857 case RTL_PCI_REVISION_ID_8192PCIE:
1858 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
1859 "8192 PCI-E is found - vid/did=%x/%x\n",
1860 venderid, deviceid);
1861 rtlhal->hw_type = HARDWARE_TYPE_RTL8192E;
1862 return false;
1863 case RTL_PCI_REVISION_ID_8192SE:
1864 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
1865 "8192SE is found - vid/did=%x/%x\n",
1866 venderid, deviceid);
1867 rtlhal->hw_type = HARDWARE_TYPE_RTL8192SE;
1868 break;
1869 default:
1870 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING,
1871 "Err: Unknown device - vid/did=%x/%x\n",
1872 venderid, deviceid);
1873 rtlhal->hw_type = HARDWARE_TYPE_RTL8192SE;
1874 break;
1875 }
1876 } else if (deviceid == RTL_PCI_8723AE_DID) {
1877 rtlhal->hw_type = HARDWARE_TYPE_RTL8723AE;
1878 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
1879 "8723AE PCI-E is found - vid/did=%x/%x\n",
1880 venderid, deviceid);
1881 } else if (deviceid == RTL_PCI_8192CET_DID ||
1882 deviceid == RTL_PCI_8192CE_DID ||
1883 deviceid == RTL_PCI_8191CE_DID ||
1884 deviceid == RTL_PCI_8188CE_DID) {
1885 rtlhal->hw_type = HARDWARE_TYPE_RTL8192CE;
1886 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
1887 "8192C PCI-E is found - vid/did=%x/%x\n",
1888 venderid, deviceid);
1889 } else if (deviceid == RTL_PCI_8192DE_DID ||
1890 deviceid == RTL_PCI_8192DE_DID2) {
1891 rtlhal->hw_type = HARDWARE_TYPE_RTL8192DE;
1892 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
1893 "8192D PCI-E is found - vid/did=%x/%x\n",
1894 venderid, deviceid);
1895 } else if (deviceid == RTL_PCI_8188EE_DID) {
1896 rtlhal->hw_type = HARDWARE_TYPE_RTL8188EE;
1897 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
1898 "Find adapter, Hardware type is 8188EE\n");
1899 } else if (deviceid == RTL_PCI_8723BE_DID) {
1900 rtlhal->hw_type = HARDWARE_TYPE_RTL8723BE;
1901 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
1902 "Find adapter, Hardware type is 8723BE\n");
1903 } else if (deviceid == RTL_PCI_8192EE_DID) {
1904 rtlhal->hw_type = HARDWARE_TYPE_RTL8192EE;
1905 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
1906 "Find adapter, Hardware type is 8192EE\n");
1907 } else if (deviceid == RTL_PCI_8821AE_DID) {
1908 rtlhal->hw_type = HARDWARE_TYPE_RTL8821AE;
1909 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
1910 "Find adapter, Hardware type is 8821AE\n");
1911 } else if (deviceid == RTL_PCI_8812AE_DID) {
1912 rtlhal->hw_type = HARDWARE_TYPE_RTL8812AE;
1913 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
1914 "Find adapter, Hardware type is 8812AE\n");
1915 } else if (deviceid == RTL_PCI_8822BE_DID) {
1916 rtlhal->hw_type = HARDWARE_TYPE_RTL8822BE;
1917 rtlhal->bandset = BAND_ON_BOTH;
1918 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
1919 "Find adapter, Hardware type is 8822BE\n");
1920 } else {
1921 rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING,
1922 "Err: Unknown device - vid/did=%x/%x\n",
1923 venderid, deviceid);
1924
1925 rtlhal->hw_type = RTL_DEFAULT_HARDWARE_TYPE;
1926 }
1927
1928 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192DE) {
1929 if (revisionid == 0 || revisionid == 1) {
1930 if (revisionid == 0) {
1931 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
1932 "Find 92DE MAC0\n");
1933 rtlhal->interfaceindex = 0;
1934 } else if (revisionid == 1) {
1935 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
1936 "Find 92DE MAC1\n");
1937 rtlhal->interfaceindex = 1;
1938 }
1939 } else {
1940 rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
1941 "Unknown device - VendorID/DeviceID=%x/%x, Revision=%x\n",
1942 venderid, deviceid, revisionid);
1943 rtlhal->interfaceindex = 0;
1944 }
1945 }
1946
1947 switch (rtlhal->hw_type) {
1948 case HARDWARE_TYPE_RTL8192EE:
1949 case HARDWARE_TYPE_RTL8822BE:
1950 /* use new trx flow */
1951 rtlpriv->use_new_trx_flow = true;
1952 break;
1953
1954 default:
1955 rtlpriv->use_new_trx_flow = false;
1956 break;
1957 }
1958
1959 /*find bus info */
1960 pcipriv->ndis_adapter.busnumber = pdev->bus->number;
1961 pcipriv->ndis_adapter.devnumber = PCI_SLOT(pdev->devfn);
1962 pcipriv->ndis_adapter.funcnumber = PCI_FUNC(pdev->devfn);
1963
1964 /*find bridge info */
1965 pcipriv->ndis_adapter.pcibridge_vendor = PCI_BRIDGE_VENDOR_UNKNOWN;
1966 /* some ARM have no bridge_pdev and will crash here
1967 * so we should check if bridge_pdev is NULL
1968 */
1969 if (bridge_pdev) {
1970 /*find bridge info if available */
1971 for (tmp = 0; tmp < PCI_BRIDGE_VENDOR_MAX; tmp++) {
1972 if (bridge_pdev->vendor == pcibridge_vendors[tmp]) {
1973 pcipriv->ndis_adapter.pcibridge_vendor = tmp;
1974 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
1975 "Pci Bridge Vendor is found index: %d\n",
1976 tmp);
1977 break;
1978 }
1979 }
1980 }
1981
1982 if (pcipriv->ndis_adapter.pcibridge_vendor !=
1983 PCI_BRIDGE_VENDOR_UNKNOWN) {
1984 pcipriv->ndis_adapter.pcibridge_busnum =
1985 bridge_pdev->bus->number;
1986 pcipriv->ndis_adapter.pcibridge_devnum =
1987 PCI_SLOT(bridge_pdev->devfn);
1988 pcipriv->ndis_adapter.pcibridge_funcnum =
1989 PCI_FUNC(bridge_pdev->devfn);
1990
1991 if (pcipriv->ndis_adapter.pcibridge_vendor ==
1992 PCI_BRIDGE_VENDOR_AMD) {
1993 pcipriv->ndis_adapter.amd_l1_patch =
1994 rtl_pci_get_amd_l1_patch(hw);
1995 }
1996 }
1997
1998 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
1999 "pcidev busnumber:devnumber:funcnumber:vendor:link_ctl %d:%d:%d:%x:%x\n",
2000 pcipriv->ndis_adapter.busnumber,
2001 pcipriv->ndis_adapter.devnumber,
2002 pcipriv->ndis_adapter.funcnumber,
2003 pdev->vendor, pcipriv->ndis_adapter.linkctrl_reg);
2004
2005 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
2006 "pci_bridge busnumber:devnumber:funcnumber:vendor:amd %d:%d:%d:%x:%x\n",
2007 pcipriv->ndis_adapter.pcibridge_busnum,
2008 pcipriv->ndis_adapter.pcibridge_devnum,
2009 pcipriv->ndis_adapter.pcibridge_funcnum,
2010 pcibridge_vendors[pcipriv->ndis_adapter.pcibridge_vendor],
2011 pcipriv->ndis_adapter.amd_l1_patch);
2012
2013 rtl_pci_parse_configuration(pdev, hw);
2014 list_add_tail(&rtlpriv->list, &rtlpriv->glb_var->glb_priv_list);
2015
2016 return true;
2017 }
2018
rtl_pci_intr_mode_msi(struct ieee80211_hw * hw)2019 static int rtl_pci_intr_mode_msi(struct ieee80211_hw *hw)
2020 {
2021 struct rtl_priv *rtlpriv = rtl_priv(hw);
2022 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
2023 struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
2024 int ret;
2025
2026 ret = pci_enable_msi(rtlpci->pdev);
2027 if (ret < 0)
2028 return ret;
2029
2030 ret = request_irq(rtlpci->pdev->irq, &_rtl_pci_interrupt,
2031 IRQF_SHARED, KBUILD_MODNAME, hw);
2032 if (ret < 0) {
2033 pci_disable_msi(rtlpci->pdev);
2034 return ret;
2035 }
2036
2037 rtlpci->using_msi = true;
2038
2039 rtl_dbg(rtlpriv, COMP_INIT | COMP_INTR, DBG_DMESG,
2040 "MSI Interrupt Mode!\n");
2041 return 0;
2042 }
2043
rtl_pci_intr_mode_legacy(struct ieee80211_hw * hw)2044 static int rtl_pci_intr_mode_legacy(struct ieee80211_hw *hw)
2045 {
2046 struct rtl_priv *rtlpriv = rtl_priv(hw);
2047 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
2048 struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
2049 int ret;
2050
2051 ret = request_irq(rtlpci->pdev->irq, &_rtl_pci_interrupt,
2052 IRQF_SHARED, KBUILD_MODNAME, hw);
2053 if (ret < 0)
2054 return ret;
2055
2056 rtlpci->using_msi = false;
2057 rtl_dbg(rtlpriv, COMP_INIT | COMP_INTR, DBG_DMESG,
2058 "Pin-based Interrupt Mode!\n");
2059 return 0;
2060 }
2061
rtl_pci_intr_mode_decide(struct ieee80211_hw * hw)2062 static int rtl_pci_intr_mode_decide(struct ieee80211_hw *hw)
2063 {
2064 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
2065 struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
2066 int ret;
2067
2068 if (rtlpci->msi_support) {
2069 ret = rtl_pci_intr_mode_msi(hw);
2070 if (ret < 0)
2071 ret = rtl_pci_intr_mode_legacy(hw);
2072 } else {
2073 ret = rtl_pci_intr_mode_legacy(hw);
2074 }
2075 return ret;
2076 }
2077
platform_enable_dma64(struct pci_dev * pdev,bool dma64)2078 static void platform_enable_dma64(struct pci_dev *pdev, bool dma64)
2079 {
2080 u8 value;
2081
2082 pci_read_config_byte(pdev, 0x719, &value);
2083
2084 /* 0x719 Bit5 is DMA64 bit fetch. */
2085 if (dma64)
2086 value |= BIT(5);
2087 else
2088 value &= ~BIT(5);
2089
2090 pci_write_config_byte(pdev, 0x719, value);
2091 }
2092
rtl_pci_probe(struct pci_dev * pdev,const struct pci_device_id * id)2093 int rtl_pci_probe(struct pci_dev *pdev,
2094 const struct pci_device_id *id)
2095 {
2096 struct ieee80211_hw *hw = NULL;
2097
2098 struct rtl_priv *rtlpriv = NULL;
2099 struct rtl_pci_priv *pcipriv = NULL;
2100 struct rtl_pci *rtlpci;
2101 unsigned long pmem_start, pmem_len, pmem_flags;
2102 int err;
2103
2104 err = pci_enable_device(pdev);
2105 if (err) {
2106 WARN_ONCE(true, "%s : Cannot enable new PCI device\n",
2107 pci_name(pdev));
2108 return err;
2109 }
2110
2111 if (((struct rtl_hal_cfg *)id->driver_data)->mod_params->dma64 &&
2112 !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
2113 if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
2114 WARN_ONCE(true,
2115 "Unable to obtain 64bit DMA for consistent allocations\n");
2116 err = -ENOMEM;
2117 goto fail1;
2118 }
2119
2120 platform_enable_dma64(pdev, true);
2121 } else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
2122 if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32))) {
2123 WARN_ONCE(true,
2124 "rtlwifi: Unable to obtain 32bit DMA for consistent allocations\n");
2125 err = -ENOMEM;
2126 goto fail1;
2127 }
2128
2129 platform_enable_dma64(pdev, false);
2130 }
2131
2132 pci_set_master(pdev);
2133
2134 hw = ieee80211_alloc_hw(sizeof(struct rtl_pci_priv) +
2135 sizeof(struct rtl_priv), &rtl_ops);
2136 if (!hw) {
2137 WARN_ONCE(true,
2138 "%s : ieee80211 alloc failed\n", pci_name(pdev));
2139 err = -ENOMEM;
2140 goto fail1;
2141 }
2142
2143 SET_IEEE80211_DEV(hw, &pdev->dev);
2144 pci_set_drvdata(pdev, hw);
2145
2146 rtlpriv = hw->priv;
2147 rtlpriv->hw = hw;
2148 pcipriv = (void *)rtlpriv->priv;
2149 pcipriv->dev.pdev = pdev;
2150 init_completion(&rtlpriv->firmware_loading_complete);
2151 /*proximity init here*/
2152 rtlpriv->proximity.proxim_on = false;
2153
2154 pcipriv = (void *)rtlpriv->priv;
2155 pcipriv->dev.pdev = pdev;
2156
2157 /* init cfg & intf_ops */
2158 rtlpriv->rtlhal.interface = INTF_PCI;
2159 rtlpriv->cfg = (struct rtl_hal_cfg *)(id->driver_data);
2160 rtlpriv->intf_ops = &rtl_pci_ops;
2161 rtlpriv->glb_var = &rtl_global_var;
2162 rtl_efuse_ops_init(hw);
2163
2164 /* MEM map */
2165 err = pci_request_regions(pdev, KBUILD_MODNAME);
2166 if (err) {
2167 WARN_ONCE(true, "rtlwifi: Can't obtain PCI resources\n");
2168 goto fail1;
2169 }
2170
2171 pmem_start = pci_resource_start(pdev, rtlpriv->cfg->bar_id);
2172 pmem_len = pci_resource_len(pdev, rtlpriv->cfg->bar_id);
2173 pmem_flags = pci_resource_flags(pdev, rtlpriv->cfg->bar_id);
2174
2175 /*shared mem start */
2176 rtlpriv->io.pci_mem_start =
2177 (unsigned long)pci_iomap(pdev,
2178 rtlpriv->cfg->bar_id, pmem_len);
2179 if (rtlpriv->io.pci_mem_start == 0) {
2180 WARN_ONCE(true, "rtlwifi: Can't map PCI mem\n");
2181 err = -ENOMEM;
2182 goto fail2;
2183 }
2184
2185 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
2186 "mem mapped space: start: 0x%08lx len:%08lx flags:%08lx, after map:0x%08lx\n",
2187 pmem_start, pmem_len, pmem_flags,
2188 rtlpriv->io.pci_mem_start);
2189
2190 /* Disable Clk Request */
2191 pci_write_config_byte(pdev, 0x81, 0);
2192 /* leave D3 mode */
2193 pci_write_config_byte(pdev, 0x44, 0);
2194 pci_write_config_byte(pdev, 0x04, 0x06);
2195 pci_write_config_byte(pdev, 0x04, 0x07);
2196
2197 /* find adapter */
2198 if (!_rtl_pci_find_adapter(pdev, hw)) {
2199 err = -ENODEV;
2200 goto fail2;
2201 }
2202
2203 /* Init IO handler */
2204 _rtl_pci_io_handler_init(&pdev->dev, hw);
2205
2206 /*like read eeprom and so on */
2207 rtlpriv->cfg->ops->read_eeprom_info(hw);
2208
2209 if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
2210 pr_err("Can't init_sw_vars\n");
2211 err = -ENODEV;
2212 goto fail3;
2213 }
2214 rtl_init_sw_leds(hw);
2215
2216 /*aspm */
2217 rtl_pci_init_aspm(hw);
2218
2219 /* Init mac80211 sw */
2220 err = rtl_init_core(hw);
2221 if (err) {
2222 pr_err("Can't allocate sw for mac80211\n");
2223 goto fail3;
2224 }
2225
2226 /* Init PCI sw */
2227 err = rtl_pci_init(hw, pdev);
2228 if (err) {
2229 pr_err("Failed to init PCI\n");
2230 goto fail3;
2231 }
2232
2233 err = ieee80211_register_hw(hw);
2234 if (err) {
2235 pr_err("Can't register mac80211 hw.\n");
2236 err = -ENODEV;
2237 goto fail3;
2238 }
2239 rtlpriv->mac80211.mac80211_registered = 1;
2240
2241 /* add for debug */
2242 rtl_debug_add_one(hw);
2243
2244 /*init rfkill */
2245 rtl_init_rfkill(hw); /* Init PCI sw */
2246
2247 rtlpci = rtl_pcidev(pcipriv);
2248 err = rtl_pci_intr_mode_decide(hw);
2249 if (err) {
2250 rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
2251 "%s: failed to register IRQ handler\n",
2252 wiphy_name(hw->wiphy));
2253 goto fail3;
2254 }
2255 rtlpci->irq_alloc = 1;
2256
2257 set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
2258 return 0;
2259
2260 fail3:
2261 pci_set_drvdata(pdev, NULL);
2262 rtl_deinit_core(hw);
2263
2264 fail2:
2265 if (rtlpriv->io.pci_mem_start != 0)
2266 pci_iounmap(pdev, (void __iomem *)rtlpriv->io.pci_mem_start);
2267
2268 pci_release_regions(pdev);
2269 complete(&rtlpriv->firmware_loading_complete);
2270
2271 fail1:
2272 if (hw)
2273 ieee80211_free_hw(hw);
2274 pci_disable_device(pdev);
2275
2276 return err;
2277 }
2278 EXPORT_SYMBOL(rtl_pci_probe);
2279
rtl_pci_disconnect(struct pci_dev * pdev)2280 void rtl_pci_disconnect(struct pci_dev *pdev)
2281 {
2282 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
2283 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
2284 struct rtl_priv *rtlpriv = rtl_priv(hw);
2285 struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
2286 struct rtl_mac *rtlmac = rtl_mac(rtlpriv);
2287
2288 /* just in case driver is removed before firmware callback */
2289 wait_for_completion(&rtlpriv->firmware_loading_complete);
2290 clear_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
2291
2292 /* remove form debug */
2293 rtl_debug_remove_one(hw);
2294
2295 /*ieee80211_unregister_hw will call ops_stop */
2296 if (rtlmac->mac80211_registered == 1) {
2297 ieee80211_unregister_hw(hw);
2298 rtlmac->mac80211_registered = 0;
2299 } else {
2300 rtl_deinit_deferred_work(hw, false);
2301 rtlpriv->intf_ops->adapter_stop(hw);
2302 }
2303 rtlpriv->cfg->ops->disable_interrupt(hw);
2304
2305 /*deinit rfkill */
2306 rtl_deinit_rfkill(hw);
2307
2308 rtl_pci_deinit(hw);
2309 rtl_deinit_core(hw);
2310 rtlpriv->cfg->ops->deinit_sw_vars(hw);
2311
2312 if (rtlpci->irq_alloc) {
2313 free_irq(rtlpci->pdev->irq, hw);
2314 rtlpci->irq_alloc = 0;
2315 }
2316
2317 if (rtlpci->using_msi)
2318 pci_disable_msi(rtlpci->pdev);
2319
2320 list_del(&rtlpriv->list);
2321 if (rtlpriv->io.pci_mem_start != 0) {
2322 pci_iounmap(pdev, (void __iomem *)rtlpriv->io.pci_mem_start);
2323 pci_release_regions(pdev);
2324 }
2325
2326 pci_disable_device(pdev);
2327
2328 rtl_pci_disable_aspm(hw);
2329
2330 pci_set_drvdata(pdev, NULL);
2331
2332 ieee80211_free_hw(hw);
2333 }
2334 EXPORT_SYMBOL(rtl_pci_disconnect);
2335
2336 #ifdef CONFIG_PM_SLEEP
2337 /***************************************
2338 * kernel pci power state define:
2339 * PCI_D0 ((pci_power_t __force) 0)
2340 * PCI_D1 ((pci_power_t __force) 1)
2341 * PCI_D2 ((pci_power_t __force) 2)
2342 * PCI_D3hot ((pci_power_t __force) 3)
2343 * PCI_D3cold ((pci_power_t __force) 4)
2344 * PCI_UNKNOWN ((pci_power_t __force) 5)
2345
2346 * This function is called when system
2347 * goes into suspend state mac80211 will
2348 * call rtl_mac_stop() from the mac80211
2349 * suspend function first, So there is
2350 * no need to call hw_disable here.
2351 ****************************************/
rtl_pci_suspend(struct device * dev)2352 int rtl_pci_suspend(struct device *dev)
2353 {
2354 struct ieee80211_hw *hw = dev_get_drvdata(dev);
2355 struct rtl_priv *rtlpriv = rtl_priv(hw);
2356
2357 rtlpriv->cfg->ops->hw_suspend(hw);
2358 rtl_deinit_rfkill(hw);
2359
2360 return 0;
2361 }
2362 EXPORT_SYMBOL(rtl_pci_suspend);
2363
rtl_pci_resume(struct device * dev)2364 int rtl_pci_resume(struct device *dev)
2365 {
2366 struct ieee80211_hw *hw = dev_get_drvdata(dev);
2367 struct rtl_priv *rtlpriv = rtl_priv(hw);
2368
2369 rtlpriv->cfg->ops->hw_resume(hw);
2370 rtl_init_rfkill(hw);
2371 return 0;
2372 }
2373 EXPORT_SYMBOL(rtl_pci_resume);
2374 #endif /* CONFIG_PM_SLEEP */
2375
2376 const struct rtl_intf_ops rtl_pci_ops = {
2377 .adapter_start = rtl_pci_start,
2378 .adapter_stop = rtl_pci_stop,
2379 .check_buddy_priv = rtl_pci_check_buddy_priv,
2380 .adapter_tx = rtl_pci_tx,
2381 .flush = rtl_pci_flush,
2382 .reset_trx_ring = rtl_pci_reset_trx_ring,
2383 .waitq_insert = rtl_pci_tx_chk_waitq_insert,
2384
2385 .disable_aspm = rtl_pci_disable_aspm,
2386 .enable_aspm = rtl_pci_enable_aspm,
2387 };
2388