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Date: Tue, 9 Apr 2024 22:57:30 +0300
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Subject: [PATCH v4 08/14] wifi: rtlwifi: Add rtl8192du/trx.{c,h}
From: Bitterblue Smith <rtl8821cerfe2@gmail.com>
To: "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Cc: Ping-Ke Shih <pkshih@realtek.com>,
 Larry Finger <Larry.Finger@lwfinger.net>,
 Stefan Lippers-Hollmann <s.l-h@gmx.de>,
 Christian Hewitt <chewitt@libreelec.tv>
References: <91d932b3-5c72-4416-920e-f2bf4fc9b039@gmail.com>
Content-Language: en-US
In-Reply-To: <91d932b3-5c72-4416-920e-f2bf4fc9b039@gmail.com>
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These contain routines related to sending frames to the chip.

Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
---
v4:
 - Fix trx.h header guard.
 - Delete unnecessary err, error variables.
 - Simplify rtl92du_tx_fill_desc, add empty lines.

v3:
 - No change.

v2:
 - Patch is new in v2, split from patch 3/3 in v1.
---
 .../wireless/realtek/rtlwifi/rtl8192du/trx.c  | 377 ++++++++++++++++++
 .../wireless/realtek/rtlwifi/rtl8192du/trx.h  |  60 +++
 2 files changed, 437 insertions(+)
 create mode 100644 drivers/net/wireless/realtek/rtlwifi/rtl8192du/trx.c
 create mode 100644 drivers/net/wireless/realtek/rtlwifi/rtl8192du/trx.h

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192du/trx.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/trx.c
new file mode 100644
index 000000000000..dbf04ad20060
--- /dev/null
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/trx.c
@@ -0,0 +1,377 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright(c) 2009-2012  Realtek Corporation.*/
+
+#include "../wifi.h"
+#include "../pci.h"
+#include "../base.h"
+#include "../stats.h"
+#include "../usb.h"
+#include "../rtl8192d/reg.h"
+#include "../rtl8192d/def.h"
+#include "../rtl8192d/phy_common.h"
+#include "../rtl8192d/trx_common.h"
+#include "phy.h"
+#include "trx.h"
+#include "led.h"
+
+void rtl92du_tx_cleanup(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+}
+
+int rtl92du_tx_post_hdl(struct ieee80211_hw *hw, struct urb *urb,
+			struct sk_buff *skb)
+{
+	return 0;
+}
+
+struct sk_buff *rtl92du_tx_aggregate_hdl(struct ieee80211_hw *hw,
+					 struct sk_buff_head *list)
+{
+	return skb_dequeue(list);
+}
+
+static enum rtl_desc_qsel _rtl92du_hwq_to_descq(u16 queue_index)
+{
+	switch (queue_index) {
+	case RTL_TXQ_BCN:
+		return QSLT_BEACON;
+	case RTL_TXQ_MGT:
+		return QSLT_MGNT;
+	case RTL_TXQ_VO:
+		return QSLT_VO;
+	case RTL_TXQ_VI:
+		return QSLT_VI;
+	case RTL_TXQ_BK:
+		return QSLT_BK;
+	default:
+	case RTL_TXQ_BE:
+		return QSLT_BE;
+	}
+}
+
+/* For HW recovery information */
+static void _rtl92du_tx_desc_checksum(__le32 *txdesc)
+{
+	__le16 *ptr = (__le16 *)txdesc;
+	u16 checksum = 0;
+	u32 index;
+
+	/* Clear first */
+	set_tx_desc_tx_desc_checksum(txdesc, 0);
+	for (index = 0; index < 16; index++)
+		checksum = checksum ^ le16_to_cpu(*(ptr + index));
+	set_tx_desc_tx_desc_checksum(txdesc, checksum);
+}
+
+void rtl92du_tx_fill_desc(struct ieee80211_hw *hw,
+			  struct ieee80211_hdr *hdr, u8 *pdesc_tx,
+			  u8 *pbd_desc_tx, struct ieee80211_tx_info *info,
+			  struct ieee80211_sta *sta,
+			  struct sk_buff *skb,
+			  u8 queue_index,
+			  struct rtl_tcb_desc *tcb_desc)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct rtl_ps_ctl *ppsc = rtl_psc(rtlpriv);
+	struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
+	struct rtl_mac *mac = rtl_mac(rtlpriv);
+	struct rtl_sta_info *sta_entry;
+	__le16 fc = hdr->frame_control;
+	u8 agg_state = RTL_AGG_STOP;
+	u16 pktlen = skb->len;
+	u32 rts_en, hw_rts_en;
+	u8 ampdu_density = 0;
+	u16 seq_number;
+	__le32 *txdesc;
+	u8 rate_flag;
+	u8 tid;
+
+	rtl_get_tcb_desc(hw, info, sta, skb, tcb_desc);
+
+	txdesc = (__le32 *)skb_push(skb, RTL_TX_HEADER_SIZE);
+	memset(txdesc, 0, RTL_TX_HEADER_SIZE);
+
+	set_tx_desc_pkt_size(txdesc, pktlen);
+	set_tx_desc_linip(txdesc, 0);
+	set_tx_desc_pkt_offset(txdesc, RTL_DUMMY_OFFSET);
+	set_tx_desc_offset(txdesc, RTL_TX_HEADER_SIZE);
+	/* 5G have no CCK rate */
+	if (rtlhal->current_bandtype == BAND_ON_5G)
+		if (tcb_desc->hw_rate < DESC_RATE6M)
+			tcb_desc->hw_rate = DESC_RATE6M;
+
+	set_tx_desc_tx_rate(txdesc, tcb_desc->hw_rate);
+	if (tcb_desc->use_shortgi || tcb_desc->use_shortpreamble)
+		set_tx_desc_data_shortgi(txdesc, 1);
+
+	if (rtlhal->macphymode == DUALMAC_DUALPHY &&
+	    tcb_desc->hw_rate == DESC_RATEMCS7)
+		set_tx_desc_data_shortgi(txdesc, 1);
+
+	if (sta) {
+		sta_entry = (struct rtl_sta_info *)sta->drv_priv;
+		tid = ieee80211_get_tid(hdr);
+		agg_state = sta_entry->tids[tid].agg.agg_state;
+		ampdu_density = sta->deflink.ht_cap.ampdu_density;
+	}
+
+	if (agg_state == RTL_AGG_OPERATIONAL &&
+	    info->flags & IEEE80211_TX_CTL_AMPDU) {
+		set_tx_desc_agg_enable(txdesc, 1);
+		set_tx_desc_max_agg_num(txdesc, 0x14);
+		set_tx_desc_ampdu_density(txdesc, ampdu_density);
+		tcb_desc->rts_enable = 1;
+		tcb_desc->rts_rate = DESC_RATE24M;
+	} else {
+		set_tx_desc_agg_break(txdesc, 1);
+	}
+	seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
+	set_tx_desc_seq(txdesc, seq_number);
+
+	rts_en = tcb_desc->rts_enable && !tcb_desc->cts_enable;
+	hw_rts_en = tcb_desc->rts_enable || tcb_desc->cts_enable;
+	set_tx_desc_rts_enable(txdesc, rts_en);
+	set_tx_desc_hw_rts_enable(txdesc, hw_rts_en);
+	set_tx_desc_cts2self(txdesc, tcb_desc->cts_enable);
+	set_tx_desc_rts_stbc(txdesc, tcb_desc->rts_stbc);
+	/* 5G have no CCK rate */
+	if (rtlhal->current_bandtype == BAND_ON_5G)
+		if (tcb_desc->rts_rate < DESC_RATE6M)
+			tcb_desc->rts_rate = DESC_RATE6M;
+	set_tx_desc_rts_rate(txdesc, tcb_desc->rts_rate);
+	set_tx_desc_rts_bw(txdesc, 0);
+	set_tx_desc_rts_sc(txdesc, tcb_desc->rts_sc);
+	set_tx_desc_rts_short(txdesc, tcb_desc->rts_use_shortpreamble);
+
+	rate_flag = info->control.rates[0].flags;
+	if (mac->bw_40) {
+		if (rate_flag & IEEE80211_TX_RC_DUP_DATA) {
+			set_tx_desc_data_bw(txdesc, 1);
+			set_tx_desc_tx_sub_carrier(txdesc, 3);
+		} else if (rate_flag & IEEE80211_TX_RC_40_MHZ_WIDTH) {
+			set_tx_desc_data_bw(txdesc, 1);
+			set_tx_desc_tx_sub_carrier(txdesc, mac->cur_40_prime_sc);
+		} else {
+			set_tx_desc_data_bw(txdesc, 0);
+			set_tx_desc_tx_sub_carrier(txdesc, 0);
+		}
+	} else {
+		set_tx_desc_data_bw(txdesc, 0);
+		set_tx_desc_tx_sub_carrier(txdesc, 0);
+	}
+
+	if (info->control.hw_key) {
+		struct ieee80211_key_conf *keyconf = info->control.hw_key;
+
+		switch (keyconf->cipher) {
+		case WLAN_CIPHER_SUITE_WEP40:
+		case WLAN_CIPHER_SUITE_WEP104:
+		case WLAN_CIPHER_SUITE_TKIP:
+			set_tx_desc_sec_type(txdesc, 0x1);
+			break;
+		case WLAN_CIPHER_SUITE_CCMP:
+			set_tx_desc_sec_type(txdesc, 0x3);
+			break;
+		default:
+			set_tx_desc_sec_type(txdesc, 0x0);
+			break;
+		}
+	}
+
+	set_tx_desc_pkt_id(txdesc, 0);
+	set_tx_desc_queue_sel(txdesc, _rtl92du_hwq_to_descq(queue_index));
+	set_tx_desc_data_rate_fb_limit(txdesc, 0x1F);
+	set_tx_desc_rts_rate_fb_limit(txdesc, 0xF);
+	set_tx_desc_disable_fb(txdesc, 0);
+	set_tx_desc_use_rate(txdesc, tcb_desc->use_driver_rate);
+
+	if (ieee80211_is_data_qos(fc)) {
+		if (mac->rdg_en) {
+			rtl_dbg(rtlpriv, COMP_SEND, DBG_TRACE,
+				"Enable RDG function\n");
+			set_tx_desc_rdg_enable(txdesc, 1);
+			set_tx_desc_htc(txdesc, 1);
+		}
+		set_tx_desc_qos(txdesc, 1);
+	}
+
+	if (rtlpriv->dm.useramask) {
+		set_tx_desc_rate_id(txdesc, tcb_desc->ratr_index);
+		set_tx_desc_macid(txdesc, tcb_desc->mac_id);
+	} else {
+		set_tx_desc_rate_id(txdesc, 0xC + tcb_desc->ratr_index);
+		set_tx_desc_macid(txdesc, tcb_desc->ratr_index);
+	}
+
+	if (!ieee80211_is_data_qos(fc) && ppsc->leisure_ps &&
+	    ppsc->fwctrl_lps) {
+		set_tx_desc_hwseq_en(txdesc, 1);
+		set_tx_desc_pkt_id(txdesc, 8);
+	}
+
+	if (ieee80211_has_morefrags(fc))
+		set_tx_desc_more_frag(txdesc, 1);
+	if (is_multicast_ether_addr(ieee80211_get_DA(hdr)) ||
+	    is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
+		set_tx_desc_bmc(txdesc, 1);
+
+	set_tx_desc_own(txdesc, 1);
+	set_tx_desc_last_seg(txdesc, 1);
+	set_tx_desc_first_seg(txdesc, 1);
+	_rtl92du_tx_desc_checksum(txdesc);
+
+	rtl_dbg(rtlpriv, COMP_SEND, DBG_TRACE, "==>\n");
+}
+
+static void _rtl92du_config_out_ep(struct ieee80211_hw *hw, u8 num_out_pipe)
+{
+	struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
+	u16 ep_cfg;
+
+	rtlusb->out_queue_sel = 0;
+	rtlusb->out_ep_nums = 0;
+
+	if (rtlhal->interfaceindex == 0)
+		ep_cfg = rtl_read_word(rtlpriv, REG_USB_Queue_Select_MAC0);
+	else
+		ep_cfg = rtl_read_word(rtlpriv, REG_USB_Queue_Select_MAC1);
+
+	if (ep_cfg & 0x00f) {
+		rtlusb->out_queue_sel |= TX_SELE_HQ;
+		rtlusb->out_ep_nums++;
+	}
+	if (ep_cfg & 0x0f0) {
+		rtlusb->out_queue_sel |= TX_SELE_NQ;
+		rtlusb->out_ep_nums++;
+	}
+	if (ep_cfg & 0xf00) {
+		rtlusb->out_queue_sel |= TX_SELE_LQ;
+		rtlusb->out_ep_nums++;
+	}
+
+	switch (num_out_pipe) {
+	case 3:
+		rtlusb->out_queue_sel = TX_SELE_HQ | TX_SELE_NQ | TX_SELE_LQ;
+		rtlusb->out_ep_nums = 3;
+		break;
+	case 2:
+		rtlusb->out_queue_sel = TX_SELE_HQ | TX_SELE_NQ;
+		rtlusb->out_ep_nums = 2;
+		break;
+	case 1:
+		rtlusb->out_queue_sel = TX_SELE_HQ;
+		rtlusb->out_ep_nums = 1;
+		break;
+	default:
+		break;
+	}
+}
+
+static void _rtl92du_one_out_ep_mapping(struct rtl_usb *rtlusb,
+					struct rtl_ep_map *ep_map)
+{
+	ep_map->ep_mapping[RTL_TXQ_BE] = rtlusb->out_eps[0];
+	ep_map->ep_mapping[RTL_TXQ_BK] = rtlusb->out_eps[0];
+	ep_map->ep_mapping[RTL_TXQ_VI] = rtlusb->out_eps[0];
+	ep_map->ep_mapping[RTL_TXQ_VO] = rtlusb->out_eps[0];
+	ep_map->ep_mapping[RTL_TXQ_MGT] = rtlusb->out_eps[0];
+	ep_map->ep_mapping[RTL_TXQ_BCN] = rtlusb->out_eps[0];
+	ep_map->ep_mapping[RTL_TXQ_HI] = rtlusb->out_eps[0];
+}
+
+static void _rtl92du_two_out_ep_mapping(struct rtl_usb *rtlusb,
+					struct rtl_ep_map *ep_map)
+{
+	ep_map->ep_mapping[RTL_TXQ_BE] = rtlusb->out_eps[1];
+	ep_map->ep_mapping[RTL_TXQ_BK] = rtlusb->out_eps[1];
+	ep_map->ep_mapping[RTL_TXQ_VI] = rtlusb->out_eps[0];
+	ep_map->ep_mapping[RTL_TXQ_VO] = rtlusb->out_eps[0];
+	ep_map->ep_mapping[RTL_TXQ_MGT] = rtlusb->out_eps[0];
+	ep_map->ep_mapping[RTL_TXQ_BCN] = rtlusb->out_eps[0];
+	ep_map->ep_mapping[RTL_TXQ_HI] = rtlusb->out_eps[0];
+}
+
+static void _rtl92du_three_out_ep_mapping(struct rtl_usb *rtlusb,
+					  struct rtl_ep_map *ep_map)
+{
+	ep_map->ep_mapping[RTL_TXQ_BE] = rtlusb->out_eps[2];
+	ep_map->ep_mapping[RTL_TXQ_BK] = rtlusb->out_eps[2];
+	ep_map->ep_mapping[RTL_TXQ_VI] = rtlusb->out_eps[1];
+	ep_map->ep_mapping[RTL_TXQ_VO] = rtlusb->out_eps[0];
+	ep_map->ep_mapping[RTL_TXQ_MGT] = rtlusb->out_eps[0];
+	ep_map->ep_mapping[RTL_TXQ_BCN] = rtlusb->out_eps[0];
+	ep_map->ep_mapping[RTL_TXQ_HI] = rtlusb->out_eps[0];
+}
+
+static int _rtl92du_out_ep_mapping(struct ieee80211_hw *hw)
+{
+	struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+	struct rtl_ep_map *ep_map = &rtlusb->ep_map;
+
+	switch (rtlusb->out_ep_nums) {
+	case 1:
+		_rtl92du_one_out_ep_mapping(rtlusb, ep_map);
+		break;
+	case 2:
+		_rtl92du_two_out_ep_mapping(rtlusb, ep_map);
+		break;
+	case 3:
+		_rtl92du_three_out_ep_mapping(rtlusb, ep_map);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+int rtl92du_endpoint_mapping(struct ieee80211_hw *hw)
+{
+	struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+
+	_rtl92du_config_out_ep(hw, rtlusb->out_ep_nums);
+
+	/* Normal chip with one IN and one OUT doesn't have interrupt IN EP. */
+	if (rtlusb->out_ep_nums == 1 && rtlusb->in_ep_nums != 1)
+		return -EINVAL;
+
+	return _rtl92du_out_ep_mapping(hw);
+}
+
+u16 rtl92du_mq_to_hwq(__le16 fc, u16 mac80211_queue_index)
+{
+	u16 hw_queue_index;
+
+	if (unlikely(ieee80211_is_beacon(fc))) {
+		hw_queue_index = RTL_TXQ_BCN;
+		goto out;
+	}
+	if (ieee80211_is_mgmt(fc)) {
+		hw_queue_index = RTL_TXQ_MGT;
+		goto out;
+	}
+
+	switch (mac80211_queue_index) {
+	case 0:
+		hw_queue_index = RTL_TXQ_VO;
+		break;
+	case 1:
+		hw_queue_index = RTL_TXQ_VI;
+		break;
+	case 2:
+		hw_queue_index = RTL_TXQ_BE;
+		break;
+	case 3:
+		hw_queue_index = RTL_TXQ_BK;
+		break;
+	default:
+		hw_queue_index = RTL_TXQ_BE;
+		WARN_ONCE(true, "rtl8192du: QSLT_BE queue, skb_queue:%d\n",
+			  mac80211_queue_index);
+		break;
+	}
+out:
+	return hw_queue_index;
+}
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192du/trx.h b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/trx.h
new file mode 100644
index 000000000000..24a6f02f2bbb
--- /dev/null
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/trx.h
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright(c) 2009-2012  Realtek Corporation.*/
+
+#ifndef __RTL92DU_TRX_H__
+#define __RTL92DU_TRX_H__
+
+#define TX_SELE_HQ				BIT(0)	/* High Queue */
+#define TX_SELE_LQ				BIT(1)	/* Low Queue */
+#define TX_SELE_NQ				BIT(2)	/* Normal Queue */
+
+#define TX_TOTAL_PAGE_NUMBER_92DU			0xF8
+#define TEST_PAGE_NUM_PUBQ_92DU				0x89
+#define TX_TOTAL_PAGE_NUMBER_92D_DUAL_MAC		0x7A
+#define NORMAL_PAGE_NUM_PUBQ_92D_DUAL_MAC		0x5A
+#define NORMAL_PAGE_NUM_HPQ_92D_DUAL_MAC		0x10
+#define NORMAL_PAGE_NUM_LPQ_92D_DUAL_MAC		0x10
+#define NORMAL_PAGE_NUM_NORMALQ_92D_DUAL_MAC		0
+
+#define WMM_NORMAL_TX_TOTAL_PAGE_NUMBER			0xF5
+
+#define WMM_NORMAL_PAGE_NUM_PUBQ_92D			0x65
+#define WMM_NORMAL_PAGE_NUM_HPQ_92D			0x30
+#define WMM_NORMAL_PAGE_NUM_LPQ_92D			0x30
+#define WMM_NORMAL_PAGE_NUM_NPQ_92D			0x30
+
+#define WMM_NORMAL_PAGE_NUM_PUBQ_92D_DUAL_MAC		0x32
+#define WMM_NORMAL_PAGE_NUM_HPQ_92D_DUAL_MAC		0x18
+#define WMM_NORMAL_PAGE_NUM_LPQ_92D_DUAL_MAC		0x18
+#define WMM_NORMAL_PAGE_NUM_NPQ_92D_DUAL_MAC		0x18
+
+static inline void set_tx_desc_bmc(__le32 *__txdesc, u32 __value)
+{
+	le32p_replace_bits(__txdesc, __value, BIT(24));
+}
+
+static inline void set_tx_desc_agg_break(__le32 *__txdesc, u32 __value)
+{
+	le32p_replace_bits((__txdesc + 1), __value, BIT(6));
+}
+
+static inline void set_tx_desc_tx_desc_checksum(__le32 *__txdesc, u32 __value)
+{
+	le32p_replace_bits((__txdesc + 7), __value, GENMASK(15, 0));
+}
+
+void rtl92du_tx_fill_desc(struct ieee80211_hw *hw,
+			  struct ieee80211_hdr *hdr, u8 *pdesc,
+			  u8 *pbd_desc_tx, struct ieee80211_tx_info *info,
+			  struct ieee80211_sta *sta,
+			  struct sk_buff *skb, u8 hw_queue,
+			  struct rtl_tcb_desc *ptcb_desc);
+int rtl92du_endpoint_mapping(struct ieee80211_hw *hw);
+u16 rtl92du_mq_to_hwq(__le16 fc, u16 mac80211_queue_index);
+struct sk_buff *rtl92du_tx_aggregate_hdl(struct ieee80211_hw *hw,
+					 struct sk_buff_head *list);
+void rtl92du_tx_cleanup(struct ieee80211_hw *hw, struct sk_buff  *skb);
+int rtl92du_tx_post_hdl(struct ieee80211_hw *hw, struct urb *urb,
+			struct sk_buff *skb);
+
+#endif
-- 
2.44.0