xref: /linux/drivers/net/wireless/realtek/rtlwifi/pci.c (revision 79790b6818e96c58fe2bffee1b418c16e64e7b80)
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