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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
[deliverable/linux.git] / drivers / net / wireless / rtlwifi / pci.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2009-2012 Realtek Corporation.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
21 * Contact Information:
22 * wlanfae <wlanfae@realtek.com>
23 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
24 * Hsinchu 300, Taiwan.
25 *
26 * Larry Finger <Larry.Finger@lwfinger.net>
27 *
28 *****************************************************************************/
29
30 #include "wifi.h"
31 #include "core.h"
32 #include "pci.h"
33 #include "base.h"
34 #include "ps.h"
35 #include "efuse.h"
36 #include <linux/interrupt.h>
37 #include <linux/export.h>
38 #include <linux/kmemleak.h>
39 #include <linux/module.h>
40
41 MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>");
42 MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>");
43 MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>");
44 MODULE_LICENSE("GPL");
45 MODULE_DESCRIPTION("PCI basic driver for rtlwifi");
46
47 static const u16 pcibridge_vendors[PCI_BRIDGE_VENDOR_MAX] = {
48 INTEL_VENDOR_ID,
49 ATI_VENDOR_ID,
50 AMD_VENDOR_ID,
51 SIS_VENDOR_ID
52 };
53
54 static const u8 ac_to_hwq[] = {
55 VO_QUEUE,
56 VI_QUEUE,
57 BE_QUEUE,
58 BK_QUEUE
59 };
60
61 static u8 _rtl_mac_to_hwqueue(struct ieee80211_hw *hw,
62 struct sk_buff *skb)
63 {
64 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
65 __le16 fc = rtl_get_fc(skb);
66 u8 queue_index = skb_get_queue_mapping(skb);
67
68 if (unlikely(ieee80211_is_beacon(fc)))
69 return BEACON_QUEUE;
70 if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc))
71 return MGNT_QUEUE;
72 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE)
73 if (ieee80211_is_nullfunc(fc))
74 return HIGH_QUEUE;
75
76 return ac_to_hwq[queue_index];
77 }
78
79 /* Update PCI dependent default settings*/
80 static void _rtl_pci_update_default_setting(struct ieee80211_hw *hw)
81 {
82 struct rtl_priv *rtlpriv = rtl_priv(hw);
83 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
84 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
85 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
86 u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor;
87 u8 init_aspm;
88
89 ppsc->reg_rfps_level = 0;
90 ppsc->support_aspm = false;
91
92 /*Update PCI ASPM setting */
93 ppsc->const_amdpci_aspm = rtlpci->const_amdpci_aspm;
94 switch (rtlpci->const_pci_aspm) {
95 case 0:
96 /*No ASPM */
97 break;
98
99 case 1:
100 /*ASPM dynamically enabled/disable. */
101 ppsc->reg_rfps_level |= RT_RF_LPS_LEVEL_ASPM;
102 break;
103
104 case 2:
105 /*ASPM with Clock Req dynamically enabled/disable. */
106 ppsc->reg_rfps_level |= (RT_RF_LPS_LEVEL_ASPM |
107 RT_RF_OFF_LEVL_CLK_REQ);
108 break;
109
110 case 3:
111 /*
112 * Always enable ASPM and Clock Req
113 * from initialization to halt.
114 * */
115 ppsc->reg_rfps_level &= ~(RT_RF_LPS_LEVEL_ASPM);
116 ppsc->reg_rfps_level |= (RT_RF_PS_LEVEL_ALWAYS_ASPM |
117 RT_RF_OFF_LEVL_CLK_REQ);
118 break;
119
120 case 4:
121 /*
122 * Always enable ASPM without Clock Req
123 * from initialization to halt.
124 * */
125 ppsc->reg_rfps_level &= ~(RT_RF_LPS_LEVEL_ASPM |
126 RT_RF_OFF_LEVL_CLK_REQ);
127 ppsc->reg_rfps_level |= RT_RF_PS_LEVEL_ALWAYS_ASPM;
128 break;
129 }
130
131 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_HALT_NIC;
132
133 /*Update Radio OFF setting */
134 switch (rtlpci->const_hwsw_rfoff_d3) {
135 case 1:
136 if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM)
137 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_ASPM;
138 break;
139
140 case 2:
141 if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM)
142 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_ASPM;
143 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_HALT_NIC;
144 break;
145
146 case 3:
147 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_PCI_D3;
148 break;
149 }
150
151 /*Set HW definition to determine if it supports ASPM. */
152 switch (rtlpci->const_support_pciaspm) {
153 case 0:{
154 /*Not support ASPM. */
155 bool support_aspm = false;
156 ppsc->support_aspm = support_aspm;
157 break;
158 }
159 case 1:{
160 /*Support ASPM. */
161 bool support_aspm = true;
162 bool support_backdoor = true;
163 ppsc->support_aspm = support_aspm;
164
165 /*if (priv->oem_id == RT_CID_TOSHIBA &&
166 !priv->ndis_adapter.amd_l1_patch)
167 support_backdoor = false; */
168
169 ppsc->support_backdoor = support_backdoor;
170
171 break;
172 }
173 case 2:
174 /*ASPM value set by chipset. */
175 if (pcibridge_vendor == PCI_BRIDGE_VENDOR_INTEL) {
176 bool support_aspm = true;
177 ppsc->support_aspm = support_aspm;
178 }
179 break;
180 default:
181 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
182 "switch case not processed\n");
183 break;
184 }
185
186 /* toshiba aspm issue, toshiba will set aspm selfly
187 * so we should not set aspm in driver */
188 pci_read_config_byte(rtlpci->pdev, 0x80, &init_aspm);
189 if (rtlpriv->rtlhal.hw_type == HARDWARE_TYPE_RTL8192SE &&
190 init_aspm == 0x43)
191 ppsc->support_aspm = false;
192 }
193
194 static bool _rtl_pci_platform_switch_device_pci_aspm(
195 struct ieee80211_hw *hw,
196 u8 value)
197 {
198 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
199 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
200
201 if (rtlhal->hw_type != HARDWARE_TYPE_RTL8192SE)
202 value |= 0x40;
203
204 pci_write_config_byte(rtlpci->pdev, 0x80, value);
205
206 return false;
207 }
208
209 /*When we set 0x01 to enable clk request. Set 0x0 to disable clk req.*/
210 static void _rtl_pci_switch_clk_req(struct ieee80211_hw *hw, u8 value)
211 {
212 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
213 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
214
215 pci_write_config_byte(rtlpci->pdev, 0x81, value);
216
217 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE)
218 udelay(100);
219 }
220
221 /*Disable RTL8192SE ASPM & Disable Pci Bridge ASPM*/
222 static void rtl_pci_disable_aspm(struct ieee80211_hw *hw)
223 {
224 struct rtl_priv *rtlpriv = rtl_priv(hw);
225 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
226 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
227 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
228 u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor;
229 u8 num4bytes = pcipriv->ndis_adapter.num4bytes;
230 /*Retrieve original configuration settings. */
231 u8 linkctrl_reg = pcipriv->ndis_adapter.linkctrl_reg;
232 u16 pcibridge_linkctrlreg = pcipriv->ndis_adapter.
233 pcibridge_linkctrlreg;
234 u16 aspmlevel = 0;
235 u8 tmp_u1b = 0;
236
237 if (!ppsc->support_aspm)
238 return;
239
240 if (pcibridge_vendor == PCI_BRIDGE_VENDOR_UNKNOWN) {
241 RT_TRACE(rtlpriv, COMP_POWER, DBG_TRACE,
242 "PCI(Bridge) UNKNOWN\n");
243
244 return;
245 }
246
247 if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_CLK_REQ) {
248 RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_CLK_REQ);
249 _rtl_pci_switch_clk_req(hw, 0x0);
250 }
251
252 /*for promising device will in L0 state after an I/O. */
253 pci_read_config_byte(rtlpci->pdev, 0x80, &tmp_u1b);
254
255 /*Set corresponding value. */
256 aspmlevel |= BIT(0) | BIT(1);
257 linkctrl_reg &= ~aspmlevel;
258 pcibridge_linkctrlreg &= ~(BIT(0) | BIT(1));
259
260 _rtl_pci_platform_switch_device_pci_aspm(hw, linkctrl_reg);
261 udelay(50);
262
263 /*4 Disable Pci Bridge ASPM */
264 pci_write_config_byte(rtlpci->pdev, (num4bytes << 2),
265 pcibridge_linkctrlreg);
266
267 udelay(50);
268 }
269
270 /*
271 *Enable RTL8192SE ASPM & Enable Pci Bridge ASPM for
272 *power saving We should follow the sequence to enable
273 *RTL8192SE first then enable Pci Bridge ASPM
274 *or the system will show bluescreen.
275 */
276 static void rtl_pci_enable_aspm(struct ieee80211_hw *hw)
277 {
278 struct rtl_priv *rtlpriv = rtl_priv(hw);
279 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
280 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
281 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
282 u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor;
283 u8 num4bytes = pcipriv->ndis_adapter.num4bytes;
284 u16 aspmlevel;
285 u8 u_pcibridge_aspmsetting;
286 u8 u_device_aspmsetting;
287
288 if (!ppsc->support_aspm)
289 return;
290
291 if (pcibridge_vendor == PCI_BRIDGE_VENDOR_UNKNOWN) {
292 RT_TRACE(rtlpriv, COMP_POWER, DBG_TRACE,
293 "PCI(Bridge) UNKNOWN\n");
294 return;
295 }
296
297 /*4 Enable Pci Bridge ASPM */
298
299 u_pcibridge_aspmsetting =
300 pcipriv->ndis_adapter.pcibridge_linkctrlreg |
301 rtlpci->const_hostpci_aspm_setting;
302
303 if (pcibridge_vendor == PCI_BRIDGE_VENDOR_INTEL)
304 u_pcibridge_aspmsetting &= ~BIT(0);
305
306 pci_write_config_byte(rtlpci->pdev, (num4bytes << 2),
307 u_pcibridge_aspmsetting);
308
309 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
310 "PlatformEnableASPM(): Write reg[%x] = %x\n",
311 (pcipriv->ndis_adapter.pcibridge_pciehdr_offset + 0x10),
312 u_pcibridge_aspmsetting);
313
314 udelay(50);
315
316 /*Get ASPM level (with/without Clock Req) */
317 aspmlevel = rtlpci->const_devicepci_aspm_setting;
318 u_device_aspmsetting = pcipriv->ndis_adapter.linkctrl_reg;
319
320 /*_rtl_pci_platform_switch_device_pci_aspm(dev,*/
321 /*(priv->ndis_adapter.linkctrl_reg | ASPMLevel)); */
322
323 u_device_aspmsetting |= aspmlevel;
324
325 _rtl_pci_platform_switch_device_pci_aspm(hw, u_device_aspmsetting);
326
327 if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_CLK_REQ) {
328 _rtl_pci_switch_clk_req(hw, (ppsc->reg_rfps_level &
329 RT_RF_OFF_LEVL_CLK_REQ) ? 1 : 0);
330 RT_SET_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_CLK_REQ);
331 }
332 udelay(100);
333 }
334
335 static bool rtl_pci_get_amd_l1_patch(struct ieee80211_hw *hw)
336 {
337 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
338
339 bool status = false;
340 u8 offset_e0;
341 unsigned offset_e4;
342
343 pci_write_config_byte(rtlpci->pdev, 0xe0, 0xa0);
344
345 pci_read_config_byte(rtlpci->pdev, 0xe0, &offset_e0);
346
347 if (offset_e0 == 0xA0) {
348 pci_read_config_dword(rtlpci->pdev, 0xe4, &offset_e4);
349 if (offset_e4 & BIT(23))
350 status = true;
351 }
352
353 return status;
354 }
355
356 static bool rtl_pci_check_buddy_priv(struct ieee80211_hw *hw,
357 struct rtl_priv **buddy_priv)
358 {
359 struct rtl_priv *rtlpriv = rtl_priv(hw);
360 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
361 bool find_buddy_priv = false;
362 struct rtl_priv *tpriv = NULL;
363 struct rtl_pci_priv *tpcipriv = NULL;
364
365 if (!list_empty(&rtlpriv->glb_var->glb_priv_list)) {
366 list_for_each_entry(tpriv, &rtlpriv->glb_var->glb_priv_list,
367 list) {
368 if (tpriv) {
369 tpcipriv = (struct rtl_pci_priv *)tpriv->priv;
370 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
371 "pcipriv->ndis_adapter.funcnumber %x\n",
372 pcipriv->ndis_adapter.funcnumber);
373 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
374 "tpcipriv->ndis_adapter.funcnumber %x\n",
375 tpcipriv->ndis_adapter.funcnumber);
376
377 if ((pcipriv->ndis_adapter.busnumber ==
378 tpcipriv->ndis_adapter.busnumber) &&
379 (pcipriv->ndis_adapter.devnumber ==
380 tpcipriv->ndis_adapter.devnumber) &&
381 (pcipriv->ndis_adapter.funcnumber !=
382 tpcipriv->ndis_adapter.funcnumber)) {
383 find_buddy_priv = true;
384 break;
385 }
386 }
387 }
388 }
389
390 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
391 "find_buddy_priv %d\n", find_buddy_priv);
392
393 if (find_buddy_priv)
394 *buddy_priv = tpriv;
395
396 return find_buddy_priv;
397 }
398
399 static void rtl_pci_get_linkcontrol_field(struct ieee80211_hw *hw)
400 {
401 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
402 struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
403 u8 capabilityoffset = pcipriv->ndis_adapter.pcibridge_pciehdr_offset;
404 u8 linkctrl_reg;
405 u8 num4bbytes;
406
407 num4bbytes = (capabilityoffset + 0x10) / 4;
408
409 /*Read Link Control Register */
410 pci_read_config_byte(rtlpci->pdev, (num4bbytes << 2), &linkctrl_reg);
411
412 pcipriv->ndis_adapter.pcibridge_linkctrlreg = linkctrl_reg;
413 }
414
415 static void rtl_pci_parse_configuration(struct pci_dev *pdev,
416 struct ieee80211_hw *hw)
417 {
418 struct rtl_priv *rtlpriv = rtl_priv(hw);
419 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
420
421 u8 tmp;
422 u16 linkctrl_reg;
423
424 /*Link Control Register */
425 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &linkctrl_reg);
426 pcipriv->ndis_adapter.linkctrl_reg = (u8)linkctrl_reg;
427
428 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE, "Link Control Register =%x\n",
429 pcipriv->ndis_adapter.linkctrl_reg);
430
431 pci_read_config_byte(pdev, 0x98, &tmp);
432 tmp |= BIT(4);
433 pci_write_config_byte(pdev, 0x98, tmp);
434
435 tmp = 0x17;
436 pci_write_config_byte(pdev, 0x70f, tmp);
437 }
438
439 static void rtl_pci_init_aspm(struct ieee80211_hw *hw)
440 {
441 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
442
443 _rtl_pci_update_default_setting(hw);
444
445 if (ppsc->reg_rfps_level & RT_RF_PS_LEVEL_ALWAYS_ASPM) {
446 /*Always enable ASPM & Clock Req. */
447 rtl_pci_enable_aspm(hw);
448 RT_SET_PS_LEVEL(ppsc, RT_RF_PS_LEVEL_ALWAYS_ASPM);
449 }
450
451 }
452
453 static void _rtl_pci_io_handler_init(struct device *dev,
454 struct ieee80211_hw *hw)
455 {
456 struct rtl_priv *rtlpriv = rtl_priv(hw);
457
458 rtlpriv->io.dev = dev;
459
460 rtlpriv->io.write8_async = pci_write8_async;
461 rtlpriv->io.write16_async = pci_write16_async;
462 rtlpriv->io.write32_async = pci_write32_async;
463
464 rtlpriv->io.read8_sync = pci_read8_sync;
465 rtlpriv->io.read16_sync = pci_read16_sync;
466 rtlpriv->io.read32_sync = pci_read32_sync;
467
468 }
469
470 static bool _rtl_update_earlymode_info(struct ieee80211_hw *hw,
471 struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc, u8 tid)
472 {
473 struct rtl_priv *rtlpriv = rtl_priv(hw);
474 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
475 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
476 struct sk_buff *next_skb;
477 u8 additionlen = FCS_LEN;
478
479 /* here open is 4, wep/tkip is 8, aes is 12*/
480 if (info->control.hw_key)
481 additionlen += info->control.hw_key->icv_len;
482
483 /* The most skb num is 6 */
484 tcb_desc->empkt_num = 0;
485 spin_lock_bh(&rtlpriv->locks.waitq_lock);
486 skb_queue_walk(&rtlpriv->mac80211.skb_waitq[tid], next_skb) {
487 struct ieee80211_tx_info *next_info;
488
489 next_info = IEEE80211_SKB_CB(next_skb);
490 if (next_info->flags & IEEE80211_TX_CTL_AMPDU) {
491 tcb_desc->empkt_len[tcb_desc->empkt_num] =
492 next_skb->len + additionlen;
493 tcb_desc->empkt_num++;
494 } else {
495 break;
496 }
497
498 if (skb_queue_is_last(&rtlpriv->mac80211.skb_waitq[tid],
499 next_skb))
500 break;
501
502 if (tcb_desc->empkt_num >= rtlhal->max_earlymode_num)
503 break;
504 }
505 spin_unlock_bh(&rtlpriv->locks.waitq_lock);
506
507 return true;
508 }
509
510 /* just for early mode now */
511 static void _rtl_pci_tx_chk_waitq(struct ieee80211_hw *hw)
512 {
513 struct rtl_priv *rtlpriv = rtl_priv(hw);
514 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
515 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
516 struct sk_buff *skb = NULL;
517 struct ieee80211_tx_info *info = NULL;
518 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
519 int tid;
520
521 if (!rtlpriv->rtlhal.earlymode_enable)
522 return;
523
524 if (rtlpriv->dm.supp_phymode_switch &&
525 (rtlpriv->easy_concurrent_ctl.switch_in_process ||
526 (rtlpriv->buddy_priv &&
527 rtlpriv->buddy_priv->easy_concurrent_ctl.switch_in_process)))
528 return;
529 /* we juse use em for BE/BK/VI/VO */
530 for (tid = 7; tid >= 0; tid--) {
531 u8 hw_queue = ac_to_hwq[rtl_tid_to_ac(tid)];
532 struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[hw_queue];
533 while (!mac->act_scanning &&
534 rtlpriv->psc.rfpwr_state == ERFON) {
535 struct rtl_tcb_desc tcb_desc;
536 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
537
538 spin_lock_bh(&rtlpriv->locks.waitq_lock);
539 if (!skb_queue_empty(&mac->skb_waitq[tid]) &&
540 (ring->entries - skb_queue_len(&ring->queue) >
541 rtlhal->max_earlymode_num)) {
542 skb = skb_dequeue(&mac->skb_waitq[tid]);
543 } else {
544 spin_unlock_bh(&rtlpriv->locks.waitq_lock);
545 break;
546 }
547 spin_unlock_bh(&rtlpriv->locks.waitq_lock);
548
549 /* Some macaddr can't do early mode. like
550 * multicast/broadcast/no_qos data */
551 info = IEEE80211_SKB_CB(skb);
552 if (info->flags & IEEE80211_TX_CTL_AMPDU)
553 _rtl_update_earlymode_info(hw, skb,
554 &tcb_desc, tid);
555
556 rtlpriv->intf_ops->adapter_tx(hw, NULL, skb, &tcb_desc);
557 }
558 }
559 }
560
561
562 static void _rtl_pci_tx_isr(struct ieee80211_hw *hw, int prio)
563 {
564 struct rtl_priv *rtlpriv = rtl_priv(hw);
565 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
566
567 struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[prio];
568
569 while (skb_queue_len(&ring->queue)) {
570 struct sk_buff *skb;
571 struct ieee80211_tx_info *info;
572 __le16 fc;
573 u8 tid;
574 u8 *entry;
575
576 if (rtlpriv->use_new_trx_flow)
577 entry = (u8 *)(&ring->buffer_desc[ring->idx]);
578 else
579 entry = (u8 *)(&ring->desc[ring->idx]);
580
581 if (rtlpriv->cfg->ops->get_available_desc &&
582 rtlpriv->cfg->ops->get_available_desc(hw, prio) <= 1) {
583 RT_TRACE(rtlpriv, (COMP_INTR | COMP_SEND), DBG_DMESG,
584 "no available desc!\n");
585 return;
586 }
587
588 if (!rtlpriv->cfg->ops->is_tx_desc_closed(hw, prio, ring->idx))
589 return;
590 ring->idx = (ring->idx + 1) % ring->entries;
591
592 skb = __skb_dequeue(&ring->queue);
593 pci_unmap_single(rtlpci->pdev,
594 rtlpriv->cfg->ops->
595 get_desc((u8 *)entry, true,
596 HW_DESC_TXBUFF_ADDR),
597 skb->len, PCI_DMA_TODEVICE);
598
599 /* remove early mode header */
600 if (rtlpriv->rtlhal.earlymode_enable)
601 skb_pull(skb, EM_HDR_LEN);
602
603 RT_TRACE(rtlpriv, (COMP_INTR | COMP_SEND), DBG_TRACE,
604 "new ring->idx:%d, free: skb_queue_len:%d, free: seq:%x\n",
605 ring->idx,
606 skb_queue_len(&ring->queue),
607 *(u16 *)(skb->data + 22));
608
609 if (prio == TXCMD_QUEUE) {
610 dev_kfree_skb(skb);
611 goto tx_status_ok;
612
613 }
614
615 /* for sw LPS, just after NULL skb send out, we can
616 * sure AP knows we are sleeping, we should not let
617 * rf sleep
618 */
619 fc = rtl_get_fc(skb);
620 if (ieee80211_is_nullfunc(fc)) {
621 if (ieee80211_has_pm(fc)) {
622 rtlpriv->mac80211.offchan_delay = true;
623 rtlpriv->psc.state_inap = true;
624 } else {
625 rtlpriv->psc.state_inap = false;
626 }
627 }
628 if (ieee80211_is_action(fc)) {
629 struct ieee80211_mgmt *action_frame =
630 (struct ieee80211_mgmt *)skb->data;
631 if (action_frame->u.action.u.ht_smps.action ==
632 WLAN_HT_ACTION_SMPS) {
633 dev_kfree_skb(skb);
634 goto tx_status_ok;
635 }
636 }
637
638 /* update tid tx pkt num */
639 tid = rtl_get_tid(skb);
640 if (tid <= 7)
641 rtlpriv->link_info.tidtx_inperiod[tid]++;
642
643 info = IEEE80211_SKB_CB(skb);
644 ieee80211_tx_info_clear_status(info);
645
646 info->flags |= IEEE80211_TX_STAT_ACK;
647 /*info->status.rates[0].count = 1; */
648
649 ieee80211_tx_status_irqsafe(hw, skb);
650
651 if ((ring->entries - skb_queue_len(&ring->queue)) <= 4) {
652
653 RT_TRACE(rtlpriv, COMP_ERR, DBG_DMESG,
654 "more desc left, wake skb_queue@%d, ring->idx = %d, skb_queue_len = 0x%x\n",
655 prio, ring->idx,
656 skb_queue_len(&ring->queue));
657
658 ieee80211_wake_queue(hw,
659 skb_get_queue_mapping
660 (skb));
661 }
662 tx_status_ok:
663 skb = NULL;
664 }
665
666 if (((rtlpriv->link_info.num_rx_inperiod +
667 rtlpriv->link_info.num_tx_inperiod) > 8) ||
668 (rtlpriv->link_info.num_rx_inperiod > 2)) {
669 rtlpriv->enter_ps = false;
670 schedule_work(&rtlpriv->works.lps_change_work);
671 }
672 }
673
674 static int _rtl_pci_init_one_rxdesc(struct ieee80211_hw *hw,
675 struct sk_buff *new_skb, u8 *entry,
676 int rxring_idx, int desc_idx)
677 {
678 struct rtl_priv *rtlpriv = rtl_priv(hw);
679 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
680 u32 bufferaddress;
681 u8 tmp_one = 1;
682 struct sk_buff *skb;
683
684 if (likely(new_skb)) {
685 skb = new_skb;
686 goto remap;
687 }
688 skb = dev_alloc_skb(rtlpci->rxbuffersize);
689 if (!skb)
690 return 0;
691
692 remap:
693 /* just set skb->cb to mapping addr for pci_unmap_single use */
694 *((dma_addr_t *)skb->cb) =
695 pci_map_single(rtlpci->pdev, skb_tail_pointer(skb),
696 rtlpci->rxbuffersize, PCI_DMA_FROMDEVICE);
697 bufferaddress = *((dma_addr_t *)skb->cb);
698 if (pci_dma_mapping_error(rtlpci->pdev, bufferaddress))
699 return 0;
700 rtlpci->rx_ring[rxring_idx].rx_buf[desc_idx] = skb;
701 if (rtlpriv->use_new_trx_flow) {
702 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false,
703 HW_DESC_RX_PREPARE,
704 (u8 *)&bufferaddress);
705 } else {
706 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false,
707 HW_DESC_RXBUFF_ADDR,
708 (u8 *)&bufferaddress);
709 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false,
710 HW_DESC_RXPKT_LEN,
711 (u8 *)&rtlpci->rxbuffersize);
712 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false,
713 HW_DESC_RXOWN,
714 (u8 *)&tmp_one);
715 }
716 return 1;
717 }
718
719 /* inorder to receive 8K AMSDU we have set skb to
720 * 9100bytes in init rx ring, but if this packet is
721 * not a AMSDU, this large packet will be sent to
722 * TCP/IP directly, this cause big packet ping fail
723 * like: "ping -s 65507", so here we will realloc skb
724 * based on the true size of packet, Mac80211
725 * Probably will do it better, but does not yet.
726 *
727 * Some platform will fail when alloc skb sometimes.
728 * in this condition, we will send the old skb to
729 * mac80211 directly, this will not cause any other
730 * issues, but only this packet will be lost by TCP/IP
731 */
732 static void _rtl_pci_rx_to_mac80211(struct ieee80211_hw *hw,
733 struct sk_buff *skb,
734 struct ieee80211_rx_status rx_status)
735 {
736 if (unlikely(!rtl_action_proc(hw, skb, false))) {
737 dev_kfree_skb_any(skb);
738 } else {
739 struct sk_buff *uskb = NULL;
740 u8 *pdata;
741
742 uskb = dev_alloc_skb(skb->len + 128);
743 if (likely(uskb)) {
744 memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status,
745 sizeof(rx_status));
746 pdata = (u8 *)skb_put(uskb, skb->len);
747 memcpy(pdata, skb->data, skb->len);
748 dev_kfree_skb_any(skb);
749 ieee80211_rx_irqsafe(hw, uskb);
750 } else {
751 ieee80211_rx_irqsafe(hw, skb);
752 }
753 }
754 }
755
756 /*hsisr interrupt handler*/
757 static void _rtl_pci_hs_interrupt(struct ieee80211_hw *hw)
758 {
759 struct rtl_priv *rtlpriv = rtl_priv(hw);
760 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
761
762 rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[MAC_HSISR],
763 rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[MAC_HSISR]) |
764 rtlpci->sys_irq_mask);
765 }
766
767 static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw)
768 {
769 struct rtl_priv *rtlpriv = rtl_priv(hw);
770 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
771 int rxring_idx = RTL_PCI_RX_MPDU_QUEUE;
772 struct ieee80211_rx_status rx_status = { 0 };
773 unsigned int count = rtlpci->rxringcount;
774 u8 own;
775 u8 tmp_one;
776 bool unicast = false;
777 u8 hw_queue = 0;
778 unsigned int rx_remained_cnt;
779 struct rtl_stats stats = {
780 .signal = 0,
781 .rate = 0,
782 };
783
784 /*RX NORMAL PKT */
785 while (count--) {
786 struct ieee80211_hdr *hdr;
787 __le16 fc;
788 u16 len;
789 /*rx buffer descriptor */
790 struct rtl_rx_buffer_desc *buffer_desc = NULL;
791 /*if use new trx flow, it means wifi info */
792 struct rtl_rx_desc *pdesc = NULL;
793 /*rx pkt */
794 struct sk_buff *skb = rtlpci->rx_ring[rxring_idx].rx_buf[
795 rtlpci->rx_ring[rxring_idx].idx];
796 struct sk_buff *new_skb;
797
798 if (rtlpriv->use_new_trx_flow) {
799 rx_remained_cnt =
800 rtlpriv->cfg->ops->rx_desc_buff_remained_cnt(hw,
801 hw_queue);
802 if (rx_remained_cnt == 0)
803 return;
804
805 } else { /* rx descriptor */
806 pdesc = &rtlpci->rx_ring[rxring_idx].desc[
807 rtlpci->rx_ring[rxring_idx].idx];
808
809 own = (u8)rtlpriv->cfg->ops->get_desc((u8 *)pdesc,
810 false,
811 HW_DESC_OWN);
812 if (own) /* wait data to be filled by hardware */
813 return;
814 }
815
816 /* Reaching this point means: data is filled already
817 * AAAAAAttention !!!
818 * We can NOT access 'skb' before 'pci_unmap_single'
819 */
820 pci_unmap_single(rtlpci->pdev, *((dma_addr_t *)skb->cb),
821 rtlpci->rxbuffersize, PCI_DMA_FROMDEVICE);
822
823 /* get a new skb - if fail, old one will be reused */
824 new_skb = dev_alloc_skb(rtlpci->rxbuffersize);
825 if (unlikely(!new_skb))
826 goto no_new;
827 if (rtlpriv->use_new_trx_flow) {
828 buffer_desc =
829 &rtlpci->rx_ring[rxring_idx].buffer_desc
830 [rtlpci->rx_ring[rxring_idx].idx];
831 /*means rx wifi info*/
832 pdesc = (struct rtl_rx_desc *)skb->data;
833 }
834 memset(&rx_status , 0 , sizeof(rx_status));
835 rtlpriv->cfg->ops->query_rx_desc(hw, &stats,
836 &rx_status, (u8 *)pdesc, skb);
837
838 if (rtlpriv->use_new_trx_flow)
839 rtlpriv->cfg->ops->rx_check_dma_ok(hw,
840 (u8 *)buffer_desc,
841 hw_queue);
842
843 len = rtlpriv->cfg->ops->get_desc((u8 *)pdesc, false,
844 HW_DESC_RXPKT_LEN);
845
846 if (skb->end - skb->tail > len) {
847 skb_put(skb, len);
848 if (rtlpriv->use_new_trx_flow)
849 skb_reserve(skb, stats.rx_drvinfo_size +
850 stats.rx_bufshift + 24);
851 else
852 skb_reserve(skb, stats.rx_drvinfo_size +
853 stats.rx_bufshift);
854 } else {
855 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
856 "skb->end - skb->tail = %d, len is %d\n",
857 skb->end - skb->tail, len);
858 dev_kfree_skb_any(skb);
859 goto new_trx_end;
860 }
861 /* handle command packet here */
862 if (rtlpriv->cfg->ops->rx_command_packet &&
863 rtlpriv->cfg->ops->rx_command_packet(hw, stats, skb)) {
864 dev_kfree_skb_any(skb);
865 goto new_trx_end;
866 }
867
868 /*
869 * NOTICE This can not be use for mac80211,
870 * this is done in mac80211 code,
871 * if done here sec DHCP will fail
872 * skb_trim(skb, skb->len - 4);
873 */
874
875 hdr = rtl_get_hdr(skb);
876 fc = rtl_get_fc(skb);
877
878 if (!stats.crc && !stats.hwerror) {
879 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status,
880 sizeof(rx_status));
881
882 if (is_broadcast_ether_addr(hdr->addr1)) {
883 ;/*TODO*/
884 } else if (is_multicast_ether_addr(hdr->addr1)) {
885 ;/*TODO*/
886 } else {
887 unicast = true;
888 rtlpriv->stats.rxbytesunicast += skb->len;
889 }
890 rtl_is_special_data(hw, skb, false);
891
892 if (ieee80211_is_data(fc)) {
893 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
894 if (unicast)
895 rtlpriv->link_info.num_rx_inperiod++;
896 }
897 /* static bcn for roaming */
898 rtl_beacon_statistic(hw, skb);
899 rtl_p2p_info(hw, (void *)skb->data, skb->len);
900 /* for sw lps */
901 rtl_swlps_beacon(hw, (void *)skb->data, skb->len);
902 rtl_recognize_peer(hw, (void *)skb->data, skb->len);
903 if ((rtlpriv->mac80211.opmode == NL80211_IFTYPE_AP) &&
904 (rtlpriv->rtlhal.current_bandtype ==
905 BAND_ON_2_4G) &&
906 (ieee80211_is_beacon(fc) ||
907 ieee80211_is_probe_resp(fc))) {
908 dev_kfree_skb_any(skb);
909 } else {
910 _rtl_pci_rx_to_mac80211(hw, skb, rx_status);
911 }
912 } else {
913 dev_kfree_skb_any(skb);
914 }
915 new_trx_end:
916 if (rtlpriv->use_new_trx_flow) {
917 rtlpci->rx_ring[hw_queue].next_rx_rp += 1;
918 rtlpci->rx_ring[hw_queue].next_rx_rp %=
919 RTL_PCI_MAX_RX_COUNT;
920
921 rx_remained_cnt--;
922 rtl_write_word(rtlpriv, 0x3B4,
923 rtlpci->rx_ring[hw_queue].next_rx_rp);
924 }
925 if (((rtlpriv->link_info.num_rx_inperiod +
926 rtlpriv->link_info.num_tx_inperiod) > 8) ||
927 (rtlpriv->link_info.num_rx_inperiod > 2)) {
928 rtlpriv->enter_ps = false;
929 schedule_work(&rtlpriv->works.lps_change_work);
930 }
931 skb = new_skb;
932 no_new:
933 if (rtlpriv->use_new_trx_flow) {
934 _rtl_pci_init_one_rxdesc(hw, skb, (u8 *)buffer_desc,
935 rxring_idx,
936 rtlpci->rx_ring[rxring_idx].idx);
937 } else {
938 _rtl_pci_init_one_rxdesc(hw, skb, (u8 *)pdesc,
939 rxring_idx,
940 rtlpci->rx_ring[rxring_idx].idx);
941 if (rtlpci->rx_ring[rxring_idx].idx ==
942 rtlpci->rxringcount - 1)
943 rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc,
944 false,
945 HW_DESC_RXERO,
946 (u8 *)&tmp_one);
947 }
948 rtlpci->rx_ring[rxring_idx].idx =
949 (rtlpci->rx_ring[rxring_idx].idx + 1) %
950 rtlpci->rxringcount;
951 }
952 }
953
954 static irqreturn_t _rtl_pci_interrupt(int irq, void *dev_id)
955 {
956 struct ieee80211_hw *hw = dev_id;
957 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
958 struct rtl_priv *rtlpriv = rtl_priv(hw);
959 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
960 unsigned long flags;
961 u32 inta = 0;
962 u32 intb = 0;
963 irqreturn_t ret = IRQ_HANDLED;
964
965 if (rtlpci->irq_enabled == 0)
966 return ret;
967
968 spin_lock_irqsave(&rtlpriv->locks.irq_th_lock , flags);
969 rtlpriv->cfg->ops->disable_interrupt(hw);
970
971 /*read ISR: 4/8bytes */
972 rtlpriv->cfg->ops->interrupt_recognized(hw, &inta, &intb);
973
974 /*Shared IRQ or HW disappared */
975 if (!inta || inta == 0xffff)
976 goto done;
977
978 /*<1> beacon related */
979 if (inta & rtlpriv->cfg->maps[RTL_IMR_TBDOK]) {
980 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
981 "beacon ok interrupt!\n");
982 }
983
984 if (unlikely(inta & rtlpriv->cfg->maps[RTL_IMR_TBDER])) {
985 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
986 "beacon err interrupt!\n");
987 }
988
989 if (inta & rtlpriv->cfg->maps[RTL_IMR_BDOK]) {
990 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE, "beacon interrupt!\n");
991 }
992
993 if (inta & rtlpriv->cfg->maps[RTL_IMR_BCNINT]) {
994 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
995 "prepare beacon for interrupt!\n");
996 tasklet_schedule(&rtlpriv->works.irq_prepare_bcn_tasklet);
997 }
998
999 /*<2> Tx related */
1000 if (unlikely(intb & rtlpriv->cfg->maps[RTL_IMR_TXFOVW]))
1001 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, "IMR_TXFOVW!\n");
1002
1003 if (inta & rtlpriv->cfg->maps[RTL_IMR_MGNTDOK]) {
1004 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
1005 "Manage ok interrupt!\n");
1006 _rtl_pci_tx_isr(hw, MGNT_QUEUE);
1007 }
1008
1009 if (inta & rtlpriv->cfg->maps[RTL_IMR_HIGHDOK]) {
1010 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
1011 "HIGH_QUEUE ok interrupt!\n");
1012 _rtl_pci_tx_isr(hw, HIGH_QUEUE);
1013 }
1014
1015 if (inta & rtlpriv->cfg->maps[RTL_IMR_BKDOK]) {
1016 rtlpriv->link_info.num_tx_inperiod++;
1017
1018 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
1019 "BK Tx OK interrupt!\n");
1020 _rtl_pci_tx_isr(hw, BK_QUEUE);
1021 }
1022
1023 if (inta & rtlpriv->cfg->maps[RTL_IMR_BEDOK]) {
1024 rtlpriv->link_info.num_tx_inperiod++;
1025
1026 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
1027 "BE TX OK interrupt!\n");
1028 _rtl_pci_tx_isr(hw, BE_QUEUE);
1029 }
1030
1031 if (inta & rtlpriv->cfg->maps[RTL_IMR_VIDOK]) {
1032 rtlpriv->link_info.num_tx_inperiod++;
1033
1034 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
1035 "VI TX OK interrupt!\n");
1036 _rtl_pci_tx_isr(hw, VI_QUEUE);
1037 }
1038
1039 if (inta & rtlpriv->cfg->maps[RTL_IMR_VODOK]) {
1040 rtlpriv->link_info.num_tx_inperiod++;
1041
1042 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
1043 "Vo TX OK interrupt!\n");
1044 _rtl_pci_tx_isr(hw, VO_QUEUE);
1045 }
1046
1047 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE) {
1048 if (inta & rtlpriv->cfg->maps[RTL_IMR_COMDOK]) {
1049 rtlpriv->link_info.num_tx_inperiod++;
1050
1051 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
1052 "CMD TX OK interrupt!\n");
1053 _rtl_pci_tx_isr(hw, TXCMD_QUEUE);
1054 }
1055 }
1056
1057 /*<3> Rx related */
1058 if (inta & rtlpriv->cfg->maps[RTL_IMR_ROK]) {
1059 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE, "Rx ok interrupt!\n");
1060 _rtl_pci_rx_interrupt(hw);
1061 }
1062
1063 if (unlikely(inta & rtlpriv->cfg->maps[RTL_IMR_RDU])) {
1064 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
1065 "rx descriptor unavailable!\n");
1066 _rtl_pci_rx_interrupt(hw);
1067 }
1068
1069 if (unlikely(intb & rtlpriv->cfg->maps[RTL_IMR_RXFOVW])) {
1070 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, "rx overflow !\n");
1071 _rtl_pci_rx_interrupt(hw);
1072 }
1073
1074 /*<4> fw related*/
1075 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8723AE) {
1076 if (inta & rtlpriv->cfg->maps[RTL_IMR_C2HCMD]) {
1077 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
1078 "firmware interrupt!\n");
1079 queue_delayed_work(rtlpriv->works.rtl_wq,
1080 &rtlpriv->works.fwevt_wq, 0);
1081 }
1082 }
1083
1084 /*<5> hsisr related*/
1085 /* Only 8188EE & 8723BE Supported.
1086 * If Other ICs Come in, System will corrupt,
1087 * because maps[RTL_IMR_HSISR_IND] & maps[MAC_HSISR]
1088 * are not initialized
1089 */
1090 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8188EE ||
1091 rtlhal->hw_type == HARDWARE_TYPE_RTL8723BE) {
1092 if (unlikely(inta & rtlpriv->cfg->maps[RTL_IMR_HSISR_IND])) {
1093 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
1094 "hsisr interrupt!\n");
1095 _rtl_pci_hs_interrupt(hw);
1096 }
1097 }
1098
1099 if (rtlpriv->rtlhal.earlymode_enable)
1100 tasklet_schedule(&rtlpriv->works.irq_tasklet);
1101
1102 done:
1103 rtlpriv->cfg->ops->enable_interrupt(hw);
1104 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
1105 return ret;
1106 }
1107
1108 static void _rtl_pci_irq_tasklet(struct ieee80211_hw *hw)
1109 {
1110 _rtl_pci_tx_chk_waitq(hw);
1111 }
1112
1113 static void _rtl_pci_prepare_bcn_tasklet(struct ieee80211_hw *hw)
1114 {
1115 struct rtl_priv *rtlpriv = rtl_priv(hw);
1116 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1117 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1118 struct rtl8192_tx_ring *ring = NULL;
1119 struct ieee80211_hdr *hdr = NULL;
1120 struct ieee80211_tx_info *info = NULL;
1121 struct sk_buff *pskb = NULL;
1122 struct rtl_tx_desc *pdesc = NULL;
1123 struct rtl_tcb_desc tcb_desc;
1124 /*This is for new trx flow*/
1125 struct rtl_tx_buffer_desc *pbuffer_desc = NULL;
1126 u8 temp_one = 1;
1127
1128 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
1129 ring = &rtlpci->tx_ring[BEACON_QUEUE];
1130 pskb = __skb_dequeue(&ring->queue);
1131 if (pskb)
1132 kfree_skb(pskb);
1133
1134 /*NB: the beacon data buffer must be 32-bit aligned. */
1135 pskb = ieee80211_beacon_get(hw, mac->vif);
1136 if (pskb == NULL)
1137 return;
1138 hdr = rtl_get_hdr(pskb);
1139 info = IEEE80211_SKB_CB(pskb);
1140 pdesc = &ring->desc[0];
1141 if (rtlpriv->use_new_trx_flow)
1142 pbuffer_desc = &ring->buffer_desc[0];
1143
1144 rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc,
1145 (u8 *)pbuffer_desc, info, NULL, pskb,
1146 BEACON_QUEUE, &tcb_desc);
1147
1148 __skb_queue_tail(&ring->queue, pskb);
1149
1150 if (rtlpriv->use_new_trx_flow) {
1151 temp_one = 4;
1152 rtlpriv->cfg->ops->set_desc(hw, (u8 *)pbuffer_desc, true,
1153 HW_DESC_OWN, (u8 *)&temp_one);
1154 } else {
1155 rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, true, HW_DESC_OWN,
1156 &temp_one);
1157 }
1158 return;
1159 }
1160
1161 static void _rtl_pci_init_trx_var(struct ieee80211_hw *hw)
1162 {
1163 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1164 struct rtl_priv *rtlpriv = rtl_priv(hw);
1165 struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
1166 u8 i;
1167 u16 desc_num;
1168
1169 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192EE)
1170 desc_num = TX_DESC_NUM_92E;
1171 else
1172 desc_num = RT_TXDESC_NUM;
1173
1174 for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++)
1175 rtlpci->txringcount[i] = desc_num;
1176
1177 /*
1178 *we just alloc 2 desc for beacon queue,
1179 *because we just need first desc in hw beacon.
1180 */
1181 rtlpci->txringcount[BEACON_QUEUE] = 2;
1182
1183 /*BE queue need more descriptor for performance
1184 *consideration or, No more tx desc will happen,
1185 *and may cause mac80211 mem leakage.
1186 */
1187 if (!rtl_priv(hw)->use_new_trx_flow)
1188 rtlpci->txringcount[BE_QUEUE] = RT_TXDESC_NUM_BE_QUEUE;
1189
1190 rtlpci->rxbuffersize = 9100; /*2048/1024; */
1191 rtlpci->rxringcount = RTL_PCI_MAX_RX_COUNT; /*64; */
1192 }
1193
1194 static void _rtl_pci_init_struct(struct ieee80211_hw *hw,
1195 struct pci_dev *pdev)
1196 {
1197 struct rtl_priv *rtlpriv = rtl_priv(hw);
1198 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1199 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1200 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1201
1202 rtlpci->up_first_time = true;
1203 rtlpci->being_init_adapter = false;
1204
1205 rtlhal->hw = hw;
1206 rtlpci->pdev = pdev;
1207
1208 /*Tx/Rx related var */
1209 _rtl_pci_init_trx_var(hw);
1210
1211 /*IBSS*/ mac->beacon_interval = 100;
1212
1213 /*AMPDU*/
1214 mac->min_space_cfg = 0;
1215 mac->max_mss_density = 0;
1216 /*set sane AMPDU defaults */
1217 mac->current_ampdu_density = 7;
1218 mac->current_ampdu_factor = 3;
1219
1220 /*QOS*/
1221 rtlpci->acm_method = EACMWAY2_SW;
1222
1223 /*task */
1224 tasklet_init(&rtlpriv->works.irq_tasklet,
1225 (void (*)(unsigned long))_rtl_pci_irq_tasklet,
1226 (unsigned long)hw);
1227 tasklet_init(&rtlpriv->works.irq_prepare_bcn_tasklet,
1228 (void (*)(unsigned long))_rtl_pci_prepare_bcn_tasklet,
1229 (unsigned long)hw);
1230 INIT_WORK(&rtlpriv->works.lps_change_work,
1231 rtl_lps_change_work_callback);
1232 }
1233
1234 static int _rtl_pci_init_tx_ring(struct ieee80211_hw *hw,
1235 unsigned int prio, unsigned int entries)
1236 {
1237 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1238 struct rtl_priv *rtlpriv = rtl_priv(hw);
1239 struct rtl_tx_buffer_desc *buffer_desc;
1240 struct rtl_tx_desc *desc;
1241 dma_addr_t buffer_desc_dma, desc_dma;
1242 u32 nextdescaddress;
1243 int i;
1244
1245 /* alloc tx buffer desc for new trx flow*/
1246 if (rtlpriv->use_new_trx_flow) {
1247 buffer_desc =
1248 pci_zalloc_consistent(rtlpci->pdev,
1249 sizeof(*buffer_desc) * entries,
1250 &buffer_desc_dma);
1251
1252 if (!buffer_desc || (unsigned long)buffer_desc & 0xFF) {
1253 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1254 "Cannot allocate TX ring (prio = %d)\n",
1255 prio);
1256 return -ENOMEM;
1257 }
1258
1259 rtlpci->tx_ring[prio].buffer_desc = buffer_desc;
1260 rtlpci->tx_ring[prio].buffer_desc_dma = buffer_desc_dma;
1261
1262 rtlpci->tx_ring[prio].cur_tx_rp = 0;
1263 rtlpci->tx_ring[prio].cur_tx_wp = 0;
1264 rtlpci->tx_ring[prio].avl_desc = entries;
1265 }
1266
1267 /* alloc dma for this ring */
1268 desc = pci_zalloc_consistent(rtlpci->pdev,
1269 sizeof(*desc) * entries, &desc_dma);
1270
1271 if (!desc || (unsigned long)desc & 0xFF) {
1272 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1273 "Cannot allocate TX ring (prio = %d)\n", prio);
1274 return -ENOMEM;
1275 }
1276
1277 rtlpci->tx_ring[prio].desc = desc;
1278 rtlpci->tx_ring[prio].dma = desc_dma;
1279
1280 rtlpci->tx_ring[prio].idx = 0;
1281 rtlpci->tx_ring[prio].entries = entries;
1282 skb_queue_head_init(&rtlpci->tx_ring[prio].queue);
1283
1284 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD, "queue:%d, ring_addr:%p\n",
1285 prio, desc);
1286
1287 /* init every desc in this ring */
1288 if (!rtlpriv->use_new_trx_flow) {
1289 for (i = 0; i < entries; i++) {
1290 nextdescaddress = (u32)desc_dma +
1291 ((i + 1) % entries) *
1292 sizeof(*desc);
1293
1294 rtlpriv->cfg->ops->set_desc(hw, (u8 *)&desc[i],
1295 true,
1296 HW_DESC_TX_NEXTDESC_ADDR,
1297 (u8 *)&nextdescaddress);
1298 }
1299 }
1300 return 0;
1301 }
1302
1303 static int _rtl_pci_init_rx_ring(struct ieee80211_hw *hw, int rxring_idx)
1304 {
1305 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1306 struct rtl_priv *rtlpriv = rtl_priv(hw);
1307 int i;
1308
1309 if (rtlpriv->use_new_trx_flow) {
1310 struct rtl_rx_buffer_desc *entry = NULL;
1311 /* alloc dma for this ring */
1312 rtlpci->rx_ring[rxring_idx].buffer_desc =
1313 pci_zalloc_consistent(rtlpci->pdev,
1314 sizeof(*rtlpci->rx_ring[rxring_idx].
1315 buffer_desc) *
1316 rtlpci->rxringcount,
1317 &rtlpci->rx_ring[rxring_idx].dma);
1318 if (!rtlpci->rx_ring[rxring_idx].buffer_desc ||
1319 (ulong)rtlpci->rx_ring[rxring_idx].buffer_desc & 0xFF) {
1320 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1321 "Cannot allocate RX ring\n");
1322 return -ENOMEM;
1323 }
1324
1325 /* init every desc in this ring */
1326 rtlpci->rx_ring[rxring_idx].idx = 0;
1327 for (i = 0; i < rtlpci->rxringcount; i++) {
1328 entry = &rtlpci->rx_ring[rxring_idx].buffer_desc[i];
1329 if (!_rtl_pci_init_one_rxdesc(hw, NULL, (u8 *)entry,
1330 rxring_idx, i))
1331 return -ENOMEM;
1332 }
1333 } else {
1334 struct rtl_rx_desc *entry = NULL;
1335 u8 tmp_one = 1;
1336 /* alloc dma for this ring */
1337 rtlpci->rx_ring[rxring_idx].desc =
1338 pci_zalloc_consistent(rtlpci->pdev,
1339 sizeof(*rtlpci->rx_ring[rxring_idx].
1340 desc) * rtlpci->rxringcount,
1341 &rtlpci->rx_ring[rxring_idx].dma);
1342 if (!rtlpci->rx_ring[rxring_idx].desc ||
1343 (unsigned long)rtlpci->rx_ring[rxring_idx].desc & 0xFF) {
1344 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1345 "Cannot allocate RX ring\n");
1346 return -ENOMEM;
1347 }
1348
1349 /* init every desc in this ring */
1350 rtlpci->rx_ring[rxring_idx].idx = 0;
1351
1352 for (i = 0; i < rtlpci->rxringcount; i++) {
1353 entry = &rtlpci->rx_ring[rxring_idx].desc[i];
1354 if (!_rtl_pci_init_one_rxdesc(hw, NULL, (u8 *)entry,
1355 rxring_idx, i))
1356 return -ENOMEM;
1357 }
1358
1359 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false,
1360 HW_DESC_RXERO, &tmp_one);
1361 }
1362 return 0;
1363 }
1364
1365 static void _rtl_pci_free_tx_ring(struct ieee80211_hw *hw,
1366 unsigned int prio)
1367 {
1368 struct rtl_priv *rtlpriv = rtl_priv(hw);
1369 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1370 struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[prio];
1371
1372 /* free every desc in this ring */
1373 while (skb_queue_len(&ring->queue)) {
1374 u8 *entry;
1375 struct sk_buff *skb = __skb_dequeue(&ring->queue);
1376
1377 if (rtlpriv->use_new_trx_flow)
1378 entry = (u8 *)(&ring->buffer_desc[ring->idx]);
1379 else
1380 entry = (u8 *)(&ring->desc[ring->idx]);
1381
1382 pci_unmap_single(rtlpci->pdev,
1383 rtlpriv->cfg->
1384 ops->get_desc((u8 *)entry, true,
1385 HW_DESC_TXBUFF_ADDR),
1386 skb->len, PCI_DMA_TODEVICE);
1387 kfree_skb(skb);
1388 ring->idx = (ring->idx + 1) % ring->entries;
1389 }
1390
1391 /* free dma of this ring */
1392 pci_free_consistent(rtlpci->pdev,
1393 sizeof(*ring->desc) * ring->entries,
1394 ring->desc, ring->dma);
1395 ring->desc = NULL;
1396 if (rtlpriv->use_new_trx_flow) {
1397 pci_free_consistent(rtlpci->pdev,
1398 sizeof(*ring->buffer_desc) * ring->entries,
1399 ring->buffer_desc, ring->buffer_desc_dma);
1400 ring->buffer_desc = NULL;
1401 }
1402 }
1403
1404 static void _rtl_pci_free_rx_ring(struct ieee80211_hw *hw, int rxring_idx)
1405 {
1406 struct rtl_priv *rtlpriv = rtl_priv(hw);
1407 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1408 int i;
1409
1410 /* free every desc in this ring */
1411 for (i = 0; i < rtlpci->rxringcount; i++) {
1412 struct sk_buff *skb = rtlpci->rx_ring[rxring_idx].rx_buf[i];
1413
1414 if (!skb)
1415 continue;
1416 pci_unmap_single(rtlpci->pdev, *((dma_addr_t *)skb->cb),
1417 rtlpci->rxbuffersize, PCI_DMA_FROMDEVICE);
1418 kfree_skb(skb);
1419 }
1420
1421 /* free dma of this ring */
1422 if (rtlpriv->use_new_trx_flow) {
1423 pci_free_consistent(rtlpci->pdev,
1424 sizeof(*rtlpci->rx_ring[rxring_idx].
1425 buffer_desc) * rtlpci->rxringcount,
1426 rtlpci->rx_ring[rxring_idx].buffer_desc,
1427 rtlpci->rx_ring[rxring_idx].dma);
1428 rtlpci->rx_ring[rxring_idx].buffer_desc = NULL;
1429 } else {
1430 pci_free_consistent(rtlpci->pdev,
1431 sizeof(*rtlpci->rx_ring[rxring_idx].desc) *
1432 rtlpci->rxringcount,
1433 rtlpci->rx_ring[rxring_idx].desc,
1434 rtlpci->rx_ring[rxring_idx].dma);
1435 rtlpci->rx_ring[rxring_idx].desc = NULL;
1436 }
1437 }
1438
1439 static int _rtl_pci_init_trx_ring(struct ieee80211_hw *hw)
1440 {
1441 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1442 int ret;
1443 int i, rxring_idx;
1444
1445 /* rxring_idx 0:RX_MPDU_QUEUE
1446 * rxring_idx 1:RX_CMD_QUEUE
1447 */
1448 for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++) {
1449 ret = _rtl_pci_init_rx_ring(hw, rxring_idx);
1450 if (ret)
1451 return ret;
1452 }
1453
1454 for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) {
1455 ret = _rtl_pci_init_tx_ring(hw, i,
1456 rtlpci->txringcount[i]);
1457 if (ret)
1458 goto err_free_rings;
1459 }
1460
1461 return 0;
1462
1463 err_free_rings:
1464 for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++)
1465 _rtl_pci_free_rx_ring(hw, rxring_idx);
1466
1467 for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++)
1468 if (rtlpci->tx_ring[i].desc ||
1469 rtlpci->tx_ring[i].buffer_desc)
1470 _rtl_pci_free_tx_ring(hw, i);
1471
1472 return 1;
1473 }
1474
1475 static int _rtl_pci_deinit_trx_ring(struct ieee80211_hw *hw)
1476 {
1477 u32 i, rxring_idx;
1478
1479 /*free rx rings */
1480 for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++)
1481 _rtl_pci_free_rx_ring(hw, rxring_idx);
1482
1483 /*free tx rings */
1484 for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++)
1485 _rtl_pci_free_tx_ring(hw, i);
1486
1487 return 0;
1488 }
1489
1490 int rtl_pci_reset_trx_ring(struct ieee80211_hw *hw)
1491 {
1492 struct rtl_priv *rtlpriv = rtl_priv(hw);
1493 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1494 int i, rxring_idx;
1495 unsigned long flags;
1496 u8 tmp_one = 1;
1497 u32 bufferaddress;
1498 /* rxring_idx 0:RX_MPDU_QUEUE */
1499 /* rxring_idx 1:RX_CMD_QUEUE */
1500 for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++) {
1501 /* force the rx_ring[RX_MPDU_QUEUE/
1502 * RX_CMD_QUEUE].idx to the first one
1503 *new trx flow, do nothing
1504 */
1505 if (!rtlpriv->use_new_trx_flow &&
1506 rtlpci->rx_ring[rxring_idx].desc) {
1507 struct rtl_rx_desc *entry = NULL;
1508
1509 rtlpci->rx_ring[rxring_idx].idx = 0;
1510 for (i = 0; i < rtlpci->rxringcount; i++) {
1511 entry = &rtlpci->rx_ring[rxring_idx].desc[i];
1512 bufferaddress =
1513 rtlpriv->cfg->ops->get_desc((u8 *)entry,
1514 false , HW_DESC_RXBUFF_ADDR);
1515 memset((u8 *)entry , 0 ,
1516 sizeof(*rtlpci->rx_ring
1517 [rxring_idx].desc));/*clear one entry*/
1518 if (rtlpriv->use_new_trx_flow) {
1519 rtlpriv->cfg->ops->set_desc(hw,
1520 (u8 *)entry, false,
1521 HW_DESC_RX_PREPARE,
1522 (u8 *)&bufferaddress);
1523 } else {
1524 rtlpriv->cfg->ops->set_desc(hw,
1525 (u8 *)entry, false,
1526 HW_DESC_RXBUFF_ADDR,
1527 (u8 *)&bufferaddress);
1528 rtlpriv->cfg->ops->set_desc(hw,
1529 (u8 *)entry, false,
1530 HW_DESC_RXPKT_LEN,
1531 (u8 *)&rtlpci->rxbuffersize);
1532 rtlpriv->cfg->ops->set_desc(hw,
1533 (u8 *)entry, false,
1534 HW_DESC_RXOWN,
1535 (u8 *)&tmp_one);
1536 }
1537 }
1538 rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false,
1539 HW_DESC_RXERO, (u8 *)&tmp_one);
1540 }
1541 rtlpci->rx_ring[rxring_idx].idx = 0;
1542 }
1543
1544 /*
1545 *after reset, release previous pending packet,
1546 *and force the tx idx to the first one
1547 */
1548 spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags);
1549 for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) {
1550 if (rtlpci->tx_ring[i].desc ||
1551 rtlpci->tx_ring[i].buffer_desc) {
1552 struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[i];
1553
1554 while (skb_queue_len(&ring->queue)) {
1555 u8 *entry;
1556 struct sk_buff *skb =
1557 __skb_dequeue(&ring->queue);
1558 if (rtlpriv->use_new_trx_flow)
1559 entry = (u8 *)(&ring->buffer_desc
1560 [ring->idx]);
1561 else
1562 entry = (u8 *)(&ring->desc[ring->idx]);
1563
1564 pci_unmap_single(rtlpci->pdev,
1565 rtlpriv->cfg->ops->
1566 get_desc((u8 *)
1567 entry,
1568 true,
1569 HW_DESC_TXBUFF_ADDR),
1570 skb->len, PCI_DMA_TODEVICE);
1571 kfree_skb(skb);
1572 ring->idx = (ring->idx + 1) % ring->entries;
1573 }
1574 ring->idx = 0;
1575 }
1576 }
1577 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
1578
1579 return 0;
1580 }
1581
1582 static bool rtl_pci_tx_chk_waitq_insert(struct ieee80211_hw *hw,
1583 struct ieee80211_sta *sta,
1584 struct sk_buff *skb)
1585 {
1586 struct rtl_priv *rtlpriv = rtl_priv(hw);
1587 struct rtl_sta_info *sta_entry = NULL;
1588 u8 tid = rtl_get_tid(skb);
1589 __le16 fc = rtl_get_fc(skb);
1590
1591 if (!sta)
1592 return false;
1593 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1594
1595 if (!rtlpriv->rtlhal.earlymode_enable)
1596 return false;
1597 if (ieee80211_is_nullfunc(fc))
1598 return false;
1599 if (ieee80211_is_qos_nullfunc(fc))
1600 return false;
1601 if (ieee80211_is_pspoll(fc))
1602 return false;
1603 if (sta_entry->tids[tid].agg.agg_state != RTL_AGG_OPERATIONAL)
1604 return false;
1605 if (_rtl_mac_to_hwqueue(hw, skb) > VO_QUEUE)
1606 return false;
1607 if (tid > 7)
1608 return false;
1609
1610 /* maybe every tid should be checked */
1611 if (!rtlpriv->link_info.higher_busytxtraffic[tid])
1612 return false;
1613
1614 spin_lock_bh(&rtlpriv->locks.waitq_lock);
1615 skb_queue_tail(&rtlpriv->mac80211.skb_waitq[tid], skb);
1616 spin_unlock_bh(&rtlpriv->locks.waitq_lock);
1617
1618 return true;
1619 }
1620
1621 static int rtl_pci_tx(struct ieee80211_hw *hw,
1622 struct ieee80211_sta *sta,
1623 struct sk_buff *skb,
1624 struct rtl_tcb_desc *ptcb_desc)
1625 {
1626 struct rtl_priv *rtlpriv = rtl_priv(hw);
1627 struct rtl_sta_info *sta_entry = NULL;
1628 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1629 struct rtl8192_tx_ring *ring;
1630 struct rtl_tx_desc *pdesc;
1631 struct rtl_tx_buffer_desc *ptx_bd_desc = NULL;
1632 u16 idx;
1633 u8 hw_queue = _rtl_mac_to_hwqueue(hw, skb);
1634 unsigned long flags;
1635 struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
1636 __le16 fc = rtl_get_fc(skb);
1637 u8 *pda_addr = hdr->addr1;
1638 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1639 /*ssn */
1640 u8 tid = 0;
1641 u16 seq_number = 0;
1642 u8 own;
1643 u8 temp_one = 1;
1644
1645 if (ieee80211_is_mgmt(fc))
1646 rtl_tx_mgmt_proc(hw, skb);
1647
1648 if (rtlpriv->psc.sw_ps_enabled) {
1649 if (ieee80211_is_data(fc) && !ieee80211_is_nullfunc(fc) &&
1650 !ieee80211_has_pm(fc))
1651 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1652 }
1653
1654 rtl_action_proc(hw, skb, true);
1655
1656 if (is_multicast_ether_addr(pda_addr))
1657 rtlpriv->stats.txbytesmulticast += skb->len;
1658 else if (is_broadcast_ether_addr(pda_addr))
1659 rtlpriv->stats.txbytesbroadcast += skb->len;
1660 else
1661 rtlpriv->stats.txbytesunicast += skb->len;
1662
1663 spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags);
1664 ring = &rtlpci->tx_ring[hw_queue];
1665 if (hw_queue != BEACON_QUEUE) {
1666 if (rtlpriv->use_new_trx_flow)
1667 idx = ring->cur_tx_wp;
1668 else
1669 idx = (ring->idx + skb_queue_len(&ring->queue)) %
1670 ring->entries;
1671 } else {
1672 idx = 0;
1673 }
1674
1675 pdesc = &ring->desc[idx];
1676 if (rtlpriv->use_new_trx_flow) {
1677 ptx_bd_desc = &ring->buffer_desc[idx];
1678 } else {
1679 own = (u8) rtlpriv->cfg->ops->get_desc((u8 *)pdesc,
1680 true, HW_DESC_OWN);
1681
1682 if ((own == 1) && (hw_queue != BEACON_QUEUE)) {
1683 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
1684 "No more TX desc@%d, ring->idx = %d, idx = %d, skb_queue_len = 0x%x\n",
1685 hw_queue, ring->idx, idx,
1686 skb_queue_len(&ring->queue));
1687
1688 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock,
1689 flags);
1690 return skb->len;
1691 }
1692 }
1693
1694 if (rtlpriv->cfg->ops->get_available_desc &&
1695 rtlpriv->cfg->ops->get_available_desc(hw, hw_queue) == 0) {
1696 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
1697 "get_available_desc fail\n");
1698 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock,
1699 flags);
1700 return skb->len;
1701 }
1702
1703 if (ieee80211_is_data_qos(fc)) {
1704 tid = rtl_get_tid(skb);
1705 if (sta) {
1706 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1707 seq_number = (le16_to_cpu(hdr->seq_ctrl) &
1708 IEEE80211_SCTL_SEQ) >> 4;
1709 seq_number += 1;
1710
1711 if (!ieee80211_has_morefrags(hdr->frame_control))
1712 sta_entry->tids[tid].seq_number = seq_number;
1713 }
1714 }
1715
1716 if (ieee80211_is_data(fc))
1717 rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
1718
1719 rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc,
1720 (u8 *)ptx_bd_desc, info, sta, skb, hw_queue, ptcb_desc);
1721
1722 __skb_queue_tail(&ring->queue, skb);
1723
1724 if (rtlpriv->use_new_trx_flow) {
1725 rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, true,
1726 HW_DESC_OWN, &hw_queue);
1727 } else {
1728 rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, true,
1729 HW_DESC_OWN, &temp_one);
1730 }
1731
1732 if ((ring->entries - skb_queue_len(&ring->queue)) < 2 &&
1733 hw_queue != BEACON_QUEUE) {
1734 RT_TRACE(rtlpriv, COMP_ERR, DBG_LOUD,
1735 "less desc left, stop skb_queue@%d, ring->idx = %d, idx = %d, skb_queue_len = 0x%x\n",
1736 hw_queue, ring->idx, idx,
1737 skb_queue_len(&ring->queue));
1738
1739 ieee80211_stop_queue(hw, skb_get_queue_mapping(skb));
1740 }
1741
1742 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
1743
1744 rtlpriv->cfg->ops->tx_polling(hw, hw_queue);
1745
1746 return 0;
1747 }
1748
1749 static void rtl_pci_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
1750 {
1751 struct rtl_priv *rtlpriv = rtl_priv(hw);
1752 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
1753 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1754 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1755 u16 i = 0;
1756 int queue_id;
1757 struct rtl8192_tx_ring *ring;
1758
1759 if (mac->skip_scan)
1760 return;
1761
1762 for (queue_id = RTL_PCI_MAX_TX_QUEUE_COUNT - 1; queue_id >= 0;) {
1763 u32 queue_len;
1764
1765 if (((queues >> queue_id) & 0x1) == 0) {
1766 queue_id--;
1767 continue;
1768 }
1769 ring = &pcipriv->dev.tx_ring[queue_id];
1770 queue_len = skb_queue_len(&ring->queue);
1771 if (queue_len == 0 || queue_id == BEACON_QUEUE ||
1772 queue_id == TXCMD_QUEUE) {
1773 queue_id--;
1774 continue;
1775 } else {
1776 msleep(20);
1777 i++;
1778 }
1779
1780 /* we just wait 1s for all queues */
1781 if (rtlpriv->psc.rfpwr_state == ERFOFF ||
1782 is_hal_stop(rtlhal) || i >= 200)
1783 return;
1784 }
1785 }
1786
1787 static void rtl_pci_deinit(struct ieee80211_hw *hw)
1788 {
1789 struct rtl_priv *rtlpriv = rtl_priv(hw);
1790 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1791
1792 _rtl_pci_deinit_trx_ring(hw);
1793
1794 synchronize_irq(rtlpci->pdev->irq);
1795 tasklet_kill(&rtlpriv->works.irq_tasklet);
1796 cancel_work_sync(&rtlpriv->works.lps_change_work);
1797
1798 flush_workqueue(rtlpriv->works.rtl_wq);
1799 destroy_workqueue(rtlpriv->works.rtl_wq);
1800
1801 }
1802
1803 static int rtl_pci_init(struct ieee80211_hw *hw, struct pci_dev *pdev)
1804 {
1805 struct rtl_priv *rtlpriv = rtl_priv(hw);
1806 int err;
1807
1808 _rtl_pci_init_struct(hw, pdev);
1809
1810 err = _rtl_pci_init_trx_ring(hw);
1811 if (err) {
1812 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1813 "tx ring initialization failed\n");
1814 return err;
1815 }
1816
1817 return 0;
1818 }
1819
1820 static int rtl_pci_start(struct ieee80211_hw *hw)
1821 {
1822 struct rtl_priv *rtlpriv = rtl_priv(hw);
1823 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1824 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1825 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1826
1827 int err;
1828
1829 rtl_pci_reset_trx_ring(hw);
1830
1831 rtlpci->driver_is_goingto_unload = false;
1832 if (rtlpriv->cfg->ops->get_btc_status &&
1833 rtlpriv->cfg->ops->get_btc_status()) {
1834 rtlpriv->btcoexist.btc_ops->btc_init_variables(rtlpriv);
1835 rtlpriv->btcoexist.btc_ops->btc_init_hal_vars(rtlpriv);
1836 }
1837 err = rtlpriv->cfg->ops->hw_init(hw);
1838 if (err) {
1839 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1840 "Failed to config hardware!\n");
1841 return err;
1842 }
1843
1844 rtlpriv->cfg->ops->enable_interrupt(hw);
1845 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD, "enable_interrupt OK\n");
1846
1847 rtl_init_rx_config(hw);
1848
1849 /*should be after adapter start and interrupt enable. */
1850 set_hal_start(rtlhal);
1851
1852 RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC);
1853
1854 rtlpci->up_first_time = false;
1855
1856 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "rtl_pci_start OK\n");
1857 return 0;
1858 }
1859
1860 static void rtl_pci_stop(struct ieee80211_hw *hw)
1861 {
1862 struct rtl_priv *rtlpriv = rtl_priv(hw);
1863 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1864 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1865 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1866 unsigned long flags;
1867 u8 RFInProgressTimeOut = 0;
1868
1869 if (rtlpriv->cfg->ops->get_btc_status())
1870 rtlpriv->btcoexist.btc_ops->btc_halt_notify();
1871
1872 /*
1873 *should be before disable interrupt&adapter
1874 *and will do it immediately.
1875 */
1876 set_hal_stop(rtlhal);
1877
1878 rtlpci->driver_is_goingto_unload = true;
1879 rtlpriv->cfg->ops->disable_interrupt(hw);
1880 cancel_work_sync(&rtlpriv->works.lps_change_work);
1881
1882 spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags);
1883 while (ppsc->rfchange_inprogress) {
1884 spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags);
1885 if (RFInProgressTimeOut > 100) {
1886 spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags);
1887 break;
1888 }
1889 mdelay(1);
1890 RFInProgressTimeOut++;
1891 spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags);
1892 }
1893 ppsc->rfchange_inprogress = true;
1894 spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags);
1895
1896 rtlpriv->cfg->ops->hw_disable(hw);
1897 /* some things are not needed if firmware not available */
1898 if (!rtlpriv->max_fw_size)
1899 return;
1900 rtlpriv->cfg->ops->led_control(hw, LED_CTL_POWER_OFF);
1901
1902 spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags);
1903 ppsc->rfchange_inprogress = false;
1904 spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags);
1905
1906 rtl_pci_enable_aspm(hw);
1907 }
1908
1909 static bool _rtl_pci_find_adapter(struct pci_dev *pdev,
1910 struct ieee80211_hw *hw)
1911 {
1912 struct rtl_priv *rtlpriv = rtl_priv(hw);
1913 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
1914 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1915 struct pci_dev *bridge_pdev = pdev->bus->self;
1916 u16 venderid;
1917 u16 deviceid;
1918 u8 revisionid;
1919 u16 irqline;
1920 u8 tmp;
1921
1922 pcipriv->ndis_adapter.pcibridge_vendor = PCI_BRIDGE_VENDOR_UNKNOWN;
1923 venderid = pdev->vendor;
1924 deviceid = pdev->device;
1925 pci_read_config_byte(pdev, 0x8, &revisionid);
1926 pci_read_config_word(pdev, 0x3C, &irqline);
1927
1928 /* PCI ID 0x10ec:0x8192 occurs for both RTL8192E, which uses
1929 * r8192e_pci, and RTL8192SE, which uses this driver. If the
1930 * revision ID is RTL_PCI_REVISION_ID_8192PCIE (0x01), then
1931 * the correct driver is r8192e_pci, thus this routine should
1932 * return false.
1933 */
1934 if (deviceid == RTL_PCI_8192SE_DID &&
1935 revisionid == RTL_PCI_REVISION_ID_8192PCIE)
1936 return false;
1937
1938 if (deviceid == RTL_PCI_8192_DID ||
1939 deviceid == RTL_PCI_0044_DID ||
1940 deviceid == RTL_PCI_0047_DID ||
1941 deviceid == RTL_PCI_8192SE_DID ||
1942 deviceid == RTL_PCI_8174_DID ||
1943 deviceid == RTL_PCI_8173_DID ||
1944 deviceid == RTL_PCI_8172_DID ||
1945 deviceid == RTL_PCI_8171_DID) {
1946 switch (revisionid) {
1947 case RTL_PCI_REVISION_ID_8192PCIE:
1948 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1949 "8192 PCI-E is found - vid/did=%x/%x\n",
1950 venderid, deviceid);
1951 rtlhal->hw_type = HARDWARE_TYPE_RTL8192E;
1952 return false;
1953 case RTL_PCI_REVISION_ID_8192SE:
1954 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1955 "8192SE is found - vid/did=%x/%x\n",
1956 venderid, deviceid);
1957 rtlhal->hw_type = HARDWARE_TYPE_RTL8192SE;
1958 break;
1959 default:
1960 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
1961 "Err: Unknown device - vid/did=%x/%x\n",
1962 venderid, deviceid);
1963 rtlhal->hw_type = HARDWARE_TYPE_RTL8192SE;
1964 break;
1965
1966 }
1967 } else if (deviceid == RTL_PCI_8723AE_DID) {
1968 rtlhal->hw_type = HARDWARE_TYPE_RTL8723AE;
1969 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1970 "8723AE PCI-E is found - "
1971 "vid/did=%x/%x\n", venderid, deviceid);
1972 } else if (deviceid == RTL_PCI_8192CET_DID ||
1973 deviceid == RTL_PCI_8192CE_DID ||
1974 deviceid == RTL_PCI_8191CE_DID ||
1975 deviceid == RTL_PCI_8188CE_DID) {
1976 rtlhal->hw_type = HARDWARE_TYPE_RTL8192CE;
1977 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1978 "8192C PCI-E is found - vid/did=%x/%x\n",
1979 venderid, deviceid);
1980 } else if (deviceid == RTL_PCI_8192DE_DID ||
1981 deviceid == RTL_PCI_8192DE_DID2) {
1982 rtlhal->hw_type = HARDWARE_TYPE_RTL8192DE;
1983 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1984 "8192D PCI-E is found - vid/did=%x/%x\n",
1985 venderid, deviceid);
1986 } else if (deviceid == RTL_PCI_8188EE_DID) {
1987 rtlhal->hw_type = HARDWARE_TYPE_RTL8188EE;
1988 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
1989 "Find adapter, Hardware type is 8188EE\n");
1990 } else if (deviceid == RTL_PCI_8723BE_DID) {
1991 rtlhal->hw_type = HARDWARE_TYPE_RTL8723BE;
1992 RT_TRACE(rtlpriv, COMP_INIT , DBG_LOUD,
1993 "Find adapter, Hardware type is 8723BE\n");
1994 } else if (deviceid == RTL_PCI_8192EE_DID) {
1995 rtlhal->hw_type = HARDWARE_TYPE_RTL8192EE;
1996 RT_TRACE(rtlpriv, COMP_INIT , DBG_LOUD,
1997 "Find adapter, Hardware type is 8192EE\n");
1998 } else if (deviceid == RTL_PCI_8821AE_DID) {
1999 rtlhal->hw_type = HARDWARE_TYPE_RTL8821AE;
2000 RT_TRACE(rtlpriv, COMP_INIT , DBG_LOUD,
2001 "Find adapter, Hardware type is 8821AE\n");
2002 } else if (deviceid == RTL_PCI_8812AE_DID) {
2003 rtlhal->hw_type = HARDWARE_TYPE_RTL8812AE;
2004 RT_TRACE(rtlpriv, COMP_INIT , DBG_LOUD,
2005 "Find adapter, Hardware type is 8812AE\n");
2006 } else {
2007 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
2008 "Err: Unknown device - vid/did=%x/%x\n",
2009 venderid, deviceid);
2010
2011 rtlhal->hw_type = RTL_DEFAULT_HARDWARE_TYPE;
2012 }
2013
2014 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192DE) {
2015 if (revisionid == 0 || revisionid == 1) {
2016 if (revisionid == 0) {
2017 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
2018 "Find 92DE MAC0\n");
2019 rtlhal->interfaceindex = 0;
2020 } else if (revisionid == 1) {
2021 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
2022 "Find 92DE MAC1\n");
2023 rtlhal->interfaceindex = 1;
2024 }
2025 } else {
2026 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
2027 "Unknown device - VendorID/DeviceID=%x/%x, Revision=%x\n",
2028 venderid, deviceid, revisionid);
2029 rtlhal->interfaceindex = 0;
2030 }
2031 }
2032
2033 /* 92ee use new trx flow */
2034 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192EE)
2035 rtlpriv->use_new_trx_flow = true;
2036 else
2037 rtlpriv->use_new_trx_flow = false;
2038
2039 /*find bus info */
2040 pcipriv->ndis_adapter.busnumber = pdev->bus->number;
2041 pcipriv->ndis_adapter.devnumber = PCI_SLOT(pdev->devfn);
2042 pcipriv->ndis_adapter.funcnumber = PCI_FUNC(pdev->devfn);
2043
2044 /*find bridge info */
2045 pcipriv->ndis_adapter.pcibridge_vendor = PCI_BRIDGE_VENDOR_UNKNOWN;
2046 /* some ARM have no bridge_pdev and will crash here
2047 * so we should check if bridge_pdev is NULL
2048 */
2049 if (bridge_pdev) {
2050 /*find bridge info if available */
2051 pcipriv->ndis_adapter.pcibridge_vendorid = bridge_pdev->vendor;
2052 for (tmp = 0; tmp < PCI_BRIDGE_VENDOR_MAX; tmp++) {
2053 if (bridge_pdev->vendor == pcibridge_vendors[tmp]) {
2054 pcipriv->ndis_adapter.pcibridge_vendor = tmp;
2055 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
2056 "Pci Bridge Vendor is found index: %d\n",
2057 tmp);
2058 break;
2059 }
2060 }
2061 }
2062
2063 if (pcipriv->ndis_adapter.pcibridge_vendor !=
2064 PCI_BRIDGE_VENDOR_UNKNOWN) {
2065 pcipriv->ndis_adapter.pcibridge_busnum =
2066 bridge_pdev->bus->number;
2067 pcipriv->ndis_adapter.pcibridge_devnum =
2068 PCI_SLOT(bridge_pdev->devfn);
2069 pcipriv->ndis_adapter.pcibridge_funcnum =
2070 PCI_FUNC(bridge_pdev->devfn);
2071 pcipriv->ndis_adapter.pcibridge_pciehdr_offset =
2072 pci_pcie_cap(bridge_pdev);
2073 pcipriv->ndis_adapter.num4bytes =
2074 (pcipriv->ndis_adapter.pcibridge_pciehdr_offset + 0x10) / 4;
2075
2076 rtl_pci_get_linkcontrol_field(hw);
2077
2078 if (pcipriv->ndis_adapter.pcibridge_vendor ==
2079 PCI_BRIDGE_VENDOR_AMD) {
2080 pcipriv->ndis_adapter.amd_l1_patch =
2081 rtl_pci_get_amd_l1_patch(hw);
2082 }
2083 }
2084
2085 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
2086 "pcidev busnumber:devnumber:funcnumber:vendor:link_ctl %d:%d:%d:%x:%x\n",
2087 pcipriv->ndis_adapter.busnumber,
2088 pcipriv->ndis_adapter.devnumber,
2089 pcipriv->ndis_adapter.funcnumber,
2090 pdev->vendor, pcipriv->ndis_adapter.linkctrl_reg);
2091
2092 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
2093 "pci_bridge busnumber:devnumber:funcnumber:vendor:pcie_cap:link_ctl_reg:amd %d:%d:%d:%x:%x:%x:%x\n",
2094 pcipriv->ndis_adapter.pcibridge_busnum,
2095 pcipriv->ndis_adapter.pcibridge_devnum,
2096 pcipriv->ndis_adapter.pcibridge_funcnum,
2097 pcibridge_vendors[pcipriv->ndis_adapter.pcibridge_vendor],
2098 pcipriv->ndis_adapter.pcibridge_pciehdr_offset,
2099 pcipriv->ndis_adapter.pcibridge_linkctrlreg,
2100 pcipriv->ndis_adapter.amd_l1_patch);
2101
2102 rtl_pci_parse_configuration(pdev, hw);
2103 list_add_tail(&rtlpriv->list, &rtlpriv->glb_var->glb_priv_list);
2104
2105 return true;
2106 }
2107
2108 static int rtl_pci_intr_mode_msi(struct ieee80211_hw *hw)
2109 {
2110 struct rtl_priv *rtlpriv = rtl_priv(hw);
2111 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
2112 struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
2113 int ret;
2114
2115 ret = pci_enable_msi(rtlpci->pdev);
2116 if (ret < 0)
2117 return ret;
2118
2119 ret = request_irq(rtlpci->pdev->irq, &_rtl_pci_interrupt,
2120 IRQF_SHARED, KBUILD_MODNAME, hw);
2121 if (ret < 0) {
2122 pci_disable_msi(rtlpci->pdev);
2123 return ret;
2124 }
2125
2126 rtlpci->using_msi = true;
2127
2128 RT_TRACE(rtlpriv, COMP_INIT|COMP_INTR, DBG_DMESG,
2129 "MSI Interrupt Mode!\n");
2130 return 0;
2131 }
2132
2133 static int rtl_pci_intr_mode_legacy(struct ieee80211_hw *hw)
2134 {
2135 struct rtl_priv *rtlpriv = rtl_priv(hw);
2136 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
2137 struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
2138 int ret;
2139
2140 ret = request_irq(rtlpci->pdev->irq, &_rtl_pci_interrupt,
2141 IRQF_SHARED, KBUILD_MODNAME, hw);
2142 if (ret < 0)
2143 return ret;
2144
2145 rtlpci->using_msi = false;
2146 RT_TRACE(rtlpriv, COMP_INIT|COMP_INTR, DBG_DMESG,
2147 "Pin-based Interrupt Mode!\n");
2148 return 0;
2149 }
2150
2151 static int rtl_pci_intr_mode_decide(struct ieee80211_hw *hw)
2152 {
2153 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
2154 struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
2155 int ret;
2156
2157 if (rtlpci->msi_support) {
2158 ret = rtl_pci_intr_mode_msi(hw);
2159 if (ret < 0)
2160 ret = rtl_pci_intr_mode_legacy(hw);
2161 } else {
2162 ret = rtl_pci_intr_mode_legacy(hw);
2163 }
2164 return ret;
2165 }
2166
2167 int rtl_pci_probe(struct pci_dev *pdev,
2168 const struct pci_device_id *id)
2169 {
2170 struct ieee80211_hw *hw = NULL;
2171
2172 struct rtl_priv *rtlpriv = NULL;
2173 struct rtl_pci_priv *pcipriv = NULL;
2174 struct rtl_pci *rtlpci;
2175 unsigned long pmem_start, pmem_len, pmem_flags;
2176 int err;
2177
2178 err = pci_enable_device(pdev);
2179 if (err) {
2180 RT_ASSERT(false, "%s : Cannot enable new PCI device\n",
2181 pci_name(pdev));
2182 return err;
2183 }
2184
2185 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
2186 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
2187 RT_ASSERT(false,
2188 "Unable to obtain 32bit DMA for consistent allocations\n");
2189 err = -ENOMEM;
2190 goto fail1;
2191 }
2192 }
2193
2194 pci_set_master(pdev);
2195
2196 hw = ieee80211_alloc_hw(sizeof(struct rtl_pci_priv) +
2197 sizeof(struct rtl_priv), &rtl_ops);
2198 if (!hw) {
2199 RT_ASSERT(false,
2200 "%s : ieee80211 alloc failed\n", pci_name(pdev));
2201 err = -ENOMEM;
2202 goto fail1;
2203 }
2204
2205 SET_IEEE80211_DEV(hw, &pdev->dev);
2206 pci_set_drvdata(pdev, hw);
2207
2208 rtlpriv = hw->priv;
2209 rtlpriv->hw = hw;
2210 pcipriv = (void *)rtlpriv->priv;
2211 pcipriv->dev.pdev = pdev;
2212 init_completion(&rtlpriv->firmware_loading_complete);
2213 /*proximity init here*/
2214 rtlpriv->proximity.proxim_on = false;
2215
2216 pcipriv = (void *)rtlpriv->priv;
2217 pcipriv->dev.pdev = pdev;
2218
2219 /* init cfg & intf_ops */
2220 rtlpriv->rtlhal.interface = INTF_PCI;
2221 rtlpriv->cfg = (struct rtl_hal_cfg *)(id->driver_data);
2222 rtlpriv->intf_ops = &rtl_pci_ops;
2223 rtlpriv->glb_var = &rtl_global_var;
2224
2225 /*
2226 *init dbgp flags before all
2227 *other functions, because we will
2228 *use it in other funtions like
2229 *RT_TRACE/RT_PRINT/RTL_PRINT_DATA
2230 *you can not use these macro
2231 *before this
2232 */
2233 rtl_dbgp_flag_init(hw);
2234
2235 /* MEM map */
2236 err = pci_request_regions(pdev, KBUILD_MODNAME);
2237 if (err) {
2238 RT_ASSERT(false, "Can't obtain PCI resources\n");
2239 goto fail1;
2240 }
2241
2242 pmem_start = pci_resource_start(pdev, rtlpriv->cfg->bar_id);
2243 pmem_len = pci_resource_len(pdev, rtlpriv->cfg->bar_id);
2244 pmem_flags = pci_resource_flags(pdev, rtlpriv->cfg->bar_id);
2245
2246 /*shared mem start */
2247 rtlpriv->io.pci_mem_start =
2248 (unsigned long)pci_iomap(pdev,
2249 rtlpriv->cfg->bar_id, pmem_len);
2250 if (rtlpriv->io.pci_mem_start == 0) {
2251 RT_ASSERT(false, "Can't map PCI mem\n");
2252 err = -ENOMEM;
2253 goto fail2;
2254 }
2255
2256 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
2257 "mem mapped space: start: 0x%08lx len:%08lx flags:%08lx, after map:0x%08lx\n",
2258 pmem_start, pmem_len, pmem_flags,
2259 rtlpriv->io.pci_mem_start);
2260
2261 /* Disable Clk Request */
2262 pci_write_config_byte(pdev, 0x81, 0);
2263 /* leave D3 mode */
2264 pci_write_config_byte(pdev, 0x44, 0);
2265 pci_write_config_byte(pdev, 0x04, 0x06);
2266 pci_write_config_byte(pdev, 0x04, 0x07);
2267
2268 /* find adapter */
2269 if (!_rtl_pci_find_adapter(pdev, hw)) {
2270 err = -ENODEV;
2271 goto fail3;
2272 }
2273
2274 /* Init IO handler */
2275 _rtl_pci_io_handler_init(&pdev->dev, hw);
2276
2277 /*like read eeprom and so on */
2278 rtlpriv->cfg->ops->read_eeprom_info(hw);
2279
2280 if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
2281 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Can't init_sw_vars\n");
2282 err = -ENODEV;
2283 goto fail3;
2284 }
2285 rtlpriv->cfg->ops->init_sw_leds(hw);
2286
2287 /*aspm */
2288 rtl_pci_init_aspm(hw);
2289
2290 /* Init mac80211 sw */
2291 err = rtl_init_core(hw);
2292 if (err) {
2293 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
2294 "Can't allocate sw for mac80211\n");
2295 goto fail3;
2296 }
2297
2298 /* Init PCI sw */
2299 err = rtl_pci_init(hw, pdev);
2300 if (err) {
2301 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Failed to init PCI\n");
2302 goto fail3;
2303 }
2304
2305 err = ieee80211_register_hw(hw);
2306 if (err) {
2307 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
2308 "Can't register mac80211 hw.\n");
2309 err = -ENODEV;
2310 goto fail3;
2311 }
2312 rtlpriv->mac80211.mac80211_registered = 1;
2313
2314 err = sysfs_create_group(&pdev->dev.kobj, &rtl_attribute_group);
2315 if (err) {
2316 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
2317 "failed to create sysfs device attributes\n");
2318 goto fail3;
2319 }
2320
2321 /*init rfkill */
2322 rtl_init_rfkill(hw); /* Init PCI sw */
2323
2324 rtlpci = rtl_pcidev(pcipriv);
2325 err = rtl_pci_intr_mode_decide(hw);
2326 if (err) {
2327 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
2328 "%s: failed to register IRQ handler\n",
2329 wiphy_name(hw->wiphy));
2330 goto fail3;
2331 }
2332 rtlpci->irq_alloc = 1;
2333
2334 set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
2335 return 0;
2336
2337 fail3:
2338 pci_set_drvdata(pdev, NULL);
2339 rtl_deinit_core(hw);
2340
2341 if (rtlpriv->io.pci_mem_start != 0)
2342 pci_iounmap(pdev, (void __iomem *)rtlpriv->io.pci_mem_start);
2343
2344 fail2:
2345 pci_release_regions(pdev);
2346 complete(&rtlpriv->firmware_loading_complete);
2347
2348 fail1:
2349 if (hw)
2350 ieee80211_free_hw(hw);
2351 pci_disable_device(pdev);
2352
2353 return err;
2354
2355 }
2356 EXPORT_SYMBOL(rtl_pci_probe);
2357
2358 void rtl_pci_disconnect(struct pci_dev *pdev)
2359 {
2360 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
2361 struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
2362 struct rtl_priv *rtlpriv = rtl_priv(hw);
2363 struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
2364 struct rtl_mac *rtlmac = rtl_mac(rtlpriv);
2365
2366 /* just in case driver is removed before firmware callback */
2367 wait_for_completion(&rtlpriv->firmware_loading_complete);
2368 clear_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
2369
2370 sysfs_remove_group(&pdev->dev.kobj, &rtl_attribute_group);
2371
2372 /*ieee80211_unregister_hw will call ops_stop */
2373 if (rtlmac->mac80211_registered == 1) {
2374 ieee80211_unregister_hw(hw);
2375 rtlmac->mac80211_registered = 0;
2376 } else {
2377 rtl_deinit_deferred_work(hw);
2378 rtlpriv->intf_ops->adapter_stop(hw);
2379 }
2380 rtlpriv->cfg->ops->disable_interrupt(hw);
2381
2382 /*deinit rfkill */
2383 rtl_deinit_rfkill(hw);
2384
2385 rtl_pci_deinit(hw);
2386 rtl_deinit_core(hw);
2387 rtlpriv->cfg->ops->deinit_sw_vars(hw);
2388
2389 if (rtlpci->irq_alloc) {
2390 synchronize_irq(rtlpci->pdev->irq);
2391 free_irq(rtlpci->pdev->irq, hw);
2392 rtlpci->irq_alloc = 0;
2393 }
2394
2395 if (rtlpci->using_msi)
2396 pci_disable_msi(rtlpci->pdev);
2397
2398 list_del(&rtlpriv->list);
2399 if (rtlpriv->io.pci_mem_start != 0) {
2400 pci_iounmap(pdev, (void __iomem *)rtlpriv->io.pci_mem_start);
2401 pci_release_regions(pdev);
2402 }
2403
2404 pci_disable_device(pdev);
2405
2406 rtl_pci_disable_aspm(hw);
2407
2408 pci_set_drvdata(pdev, NULL);
2409
2410 ieee80211_free_hw(hw);
2411 }
2412 EXPORT_SYMBOL(rtl_pci_disconnect);
2413
2414 #ifdef CONFIG_PM_SLEEP
2415 /***************************************
2416 kernel pci power state define:
2417 PCI_D0 ((pci_power_t __force) 0)
2418 PCI_D1 ((pci_power_t __force) 1)
2419 PCI_D2 ((pci_power_t __force) 2)
2420 PCI_D3hot ((pci_power_t __force) 3)
2421 PCI_D3cold ((pci_power_t __force) 4)
2422 PCI_UNKNOWN ((pci_power_t __force) 5)
2423
2424 This function is called when system
2425 goes into suspend state mac80211 will
2426 call rtl_mac_stop() from the mac80211
2427 suspend function first, So there is
2428 no need to call hw_disable here.
2429 ****************************************/
2430 int rtl_pci_suspend(struct device *dev)
2431 {
2432 struct pci_dev *pdev = to_pci_dev(dev);
2433 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
2434 struct rtl_priv *rtlpriv = rtl_priv(hw);
2435
2436 rtlpriv->cfg->ops->hw_suspend(hw);
2437 rtl_deinit_rfkill(hw);
2438
2439 return 0;
2440 }
2441 EXPORT_SYMBOL(rtl_pci_suspend);
2442
2443 int rtl_pci_resume(struct device *dev)
2444 {
2445 struct pci_dev *pdev = to_pci_dev(dev);
2446 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
2447 struct rtl_priv *rtlpriv = rtl_priv(hw);
2448
2449 rtlpriv->cfg->ops->hw_resume(hw);
2450 rtl_init_rfkill(hw);
2451 return 0;
2452 }
2453 EXPORT_SYMBOL(rtl_pci_resume);
2454 #endif /* CONFIG_PM_SLEEP */
2455
2456 struct rtl_intf_ops rtl_pci_ops = {
2457 .read_efuse_byte = read_efuse_byte,
2458 .adapter_start = rtl_pci_start,
2459 .adapter_stop = rtl_pci_stop,
2460 .check_buddy_priv = rtl_pci_check_buddy_priv,
2461 .adapter_tx = rtl_pci_tx,
2462 .flush = rtl_pci_flush,
2463 .reset_trx_ring = rtl_pci_reset_trx_ring,
2464 .waitq_insert = rtl_pci_tx_chk_waitq_insert,
2465
2466 .disable_aspm = rtl_pci_disable_aspm,
2467 .enable_aspm = rtl_pci_enable_aspm,
2468 };
Linux kernel - Deliverables
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