wifi: mt76: mt792x: introduce mt792x-usb module

Add usb shared code between mt7921 and mt7925 chipset to mt792x-usb module.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

5 files changed, 69 insertions, 360 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/Kconfig b/drivers/net/wireless/mediatek/mt76/mt7921/Kconfig
index b92630cdf88b..7ed51e057857 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/Kconfig
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/Kconfig
@@ -27,7 +27,7 @@ config MT7921S
 
 config MT7921U
 	tristate "MediaTek MT7921U (USB) support"
-	select MT76_USB
+	select MT792x_USB
 	select MT7921_COMMON
 	depends on MAC80211
 	depends on USB
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/Makefile b/drivers/net/wireless/mediatek/mt76/mt7921/Makefile
index f380ec4b6de1..964eb55824cd 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/Makefile
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/Makefile
@@ -9,4 +9,4 @@ mt7921-common-y := mac.o mcu.o main.o init.o debugfs.o
 mt7921-common-$(CONFIG_NL80211_TESTMODE) += testmode.o
 mt7921e-y := pci.o pci_mac.o pci_mcu.o dma.o
 mt7921s-y := sdio.o sdio_mac.o sdio_mcu.o
-mt7921u-y := usb.o usb_mac.o
+mt7921u-y := usb.o
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
index 3ba873ec6bc4..cb22be083242 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
@@ -332,14 +332,6 @@ void mt7921_usb_sdio_tx_complete_skb(struct mt76_dev *mdev,
 bool mt7921_usb_sdio_tx_status_data(struct mt76_dev *mdev, u8 *update);
 
 /* usb */
-#define MT_USB_TYPE_VENDOR	(USB_TYPE_VENDOR | 0x1f)
-#define MT_USB_TYPE_UHW_VENDOR	(USB_TYPE_VENDOR | 0x1e)
-
-int mt7921u_mcu_power_on(struct mt792x_dev *dev);
-int mt7921u_wfsys_reset(struct mt792x_dev *dev);
-int mt7921u_dma_init(struct mt792x_dev *dev, bool resume);
-int mt7921u_init_reset(struct mt792x_dev *dev);
-int mt7921u_mac_reset(struct mt792x_dev *dev);
 int mt7921_mcu_uni_add_beacon_offload(struct mt792x_dev *dev,
 				      struct ieee80211_hw *hw,
 				      struct ieee80211_vif *vif,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/usb.c b/drivers/net/wireless/mediatek/mt76/mt7921/usb.c
index 0a31e7076324..c3981bc893ac 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/usb.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/usb.c
@@ -24,83 +24,6 @@ static const struct usb_device_id mt7921u_device_table[] = {
 	{ },
 };
 
-static u32 mt7921u_rr(struct mt76_dev *dev, u32 addr)
-{
-	u32 ret;
-
-	mutex_lock(&dev->usb.usb_ctrl_mtx);
-	ret = ___mt76u_rr(dev, MT_VEND_READ_EXT,
-			  USB_DIR_IN | MT_USB_TYPE_VENDOR, addr);
-	mutex_unlock(&dev->usb.usb_ctrl_mtx);
-
-	return ret;
-}
-
-static void mt7921u_wr(struct mt76_dev *dev, u32 addr, u32 val)
-{
-	mutex_lock(&dev->usb.usb_ctrl_mtx);
-	___mt76u_wr(dev, MT_VEND_WRITE_EXT,
-		    USB_DIR_OUT | MT_USB_TYPE_VENDOR, addr, val);
-	mutex_unlock(&dev->usb.usb_ctrl_mtx);
-}
-
-static u32 mt7921u_rmw(struct mt76_dev *dev, u32 addr,
-		       u32 mask, u32 val)
-{
-	mutex_lock(&dev->usb.usb_ctrl_mtx);
-	val |= ___mt76u_rr(dev, MT_VEND_READ_EXT,
-			   USB_DIR_IN | MT_USB_TYPE_VENDOR, addr) & ~mask;
-	___mt76u_wr(dev, MT_VEND_WRITE_EXT,
-		    USB_DIR_OUT | MT_USB_TYPE_VENDOR, addr, val);
-	mutex_unlock(&dev->usb.usb_ctrl_mtx);
-
-	return val;
-}
-
-static void mt7921u_copy(struct mt76_dev *dev, u32 offset,
-			 const void *data, int len)
-{
-	struct mt76_usb *usb = &dev->usb;
-	int ret, i = 0, batch_len;
-	const u8 *val = data;
-
-	len = round_up(len, 4);
-
-	mutex_lock(&usb->usb_ctrl_mtx);
-	while (i < len) {
-		batch_len = min_t(int, usb->data_len, len - i);
-		memcpy(usb->data, val + i, batch_len);
-		ret = __mt76u_vendor_request(dev, MT_VEND_WRITE_EXT,
-					     USB_DIR_OUT | MT_USB_TYPE_VENDOR,
-					     (offset + i) >> 16, offset + i,
-					     usb->data, batch_len);
-		if (ret < 0)
-			break;
-
-		i += batch_len;
-	}
-	mutex_unlock(&usb->usb_ctrl_mtx);
-}
-
-int mt7921u_mcu_power_on(struct mt792x_dev *dev)
-{
-	int ret;
-
-	ret = mt76u_vendor_request(&dev->mt76, MT_VEND_POWER_ON,
-				   USB_DIR_OUT | MT_USB_TYPE_VENDOR,
-				   0x0, 0x1, NULL, 0);
-	if (ret)
-		return ret;
-
-	if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_PWR_ON,
-			    MT_TOP_MISC2_FW_PWR_ON, 500)) {
-		dev_err(dev->mt76.dev, "Timeout for power on\n");
-		ret = -EIO;
-	}
-
-	return ret;
-}
-
 static int
 mt7921u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
 			 int cmd, int *seq)
@@ -155,20 +78,69 @@ static int mt7921u_mcu_init(struct mt792x_dev *dev)
 	return 0;
 }
 
-static void mt7921u_stop(struct ieee80211_hw *hw)
+static int mt7921u_mac_reset(struct mt792x_dev *dev)
 {
-	struct mt792x_dev *dev = mt792x_hw_dev(hw);
+	int err;
+
+	mt76_txq_schedule_all(&dev->mphy);
+	mt76_worker_disable(&dev->mt76.tx_worker);
+
+	set_bit(MT76_RESET, &dev->mphy.state);
+	set_bit(MT76_MCU_RESET, &dev->mphy.state);
 
+	wake_up(&dev->mt76.mcu.wait);
+	skb_queue_purge(&dev->mt76.mcu.res_q);
+
+	mt76u_stop_rx(&dev->mt76);
 	mt76u_stop_tx(&dev->mt76);
-	mt7921_stop(hw);
+
+	mt792xu_wfsys_reset(dev);
+
+	clear_bit(MT76_MCU_RESET, &dev->mphy.state);
+	err = mt76u_resume_rx(&dev->mt76);
+	if (err)
+		goto out;
+
+	err = mt792xu_mcu_power_on(dev);
+	if (err)
+		goto out;
+
+	err = mt792xu_dma_init(dev, false);
+	if (err)
+		goto out;
+
+	mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE);
+	mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
+
+	err = mt7921_run_firmware(dev);
+	if (err)
+		goto out;
+
+	mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
+
+	err = mt7921_mcu_set_eeprom(dev);
+	if (err)
+		goto out;
+
+	err = mt7921_mac_init(dev);
+	if (err)
+		goto out;
+
+	err = __mt7921_start(&dev->phy);
+out:
+	clear_bit(MT76_RESET, &dev->mphy.state);
+
+	mt76_worker_enable(&dev->mt76.tx_worker);
+
+	return err;
 }
 
-static void mt7921u_cleanup(struct mt792x_dev *dev)
+static void mt7921u_stop(struct ieee80211_hw *hw)
 {
-	clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
-	mt7921u_wfsys_reset(dev);
-	skb_queue_purge(&dev->mt76.mcu.res_q);
-	mt76u_queues_deinit(&dev->mt76);
+	struct mt792x_dev *dev = mt792x_hw_dev(hw);
+
+	mt76u_stop_tx(&dev->mt76);
+	mt7921_stop(hw);
 }
 
 static int mt7921u_probe(struct usb_interface *usb_intf,
@@ -193,15 +165,15 @@ static int mt7921u_probe(struct usb_interface *usb_intf,
 	};
 	static const struct mt792x_hif_ops hif_ops = {
 		.mcu_init = mt7921u_mcu_init,
-		.init_reset = mt7921u_init_reset,
+		.init_reset = mt792xu_init_reset,
 		.reset = mt7921u_mac_reset,
 	};
 	static struct mt76_bus_ops bus_ops = {
-		.rr = mt7921u_rr,
-		.wr = mt7921u_wr,
-		.rmw = mt7921u_rmw,
+		.rr = mt792xu_rr,
+		.wr = mt792xu_wr,
+		.rmw = mt792xu_rmw,
 		.read_copy = mt76u_read_copy,
-		.write_copy = mt7921u_copy,
+		.write_copy = mt792xu_copy,
 		.type = MT76_BUS_USB,
 	};
 	struct usb_device *udev = interface_to_usbdev(usb_intf);
@@ -240,12 +212,12 @@ static int mt7921u_probe(struct usb_interface *usb_intf,
 	dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
 
 	if (mt76_get_field(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_N9_RDY)) {
-		ret = mt7921u_wfsys_reset(dev);
+		ret = mt792xu_wfsys_reset(dev);
 		if (ret)
 			goto error;
 	}
 
-	ret = mt7921u_mcu_power_on(dev);
+	ret = mt792xu_mcu_power_on(dev);
 	if (ret)
 		goto error;
 
@@ -257,7 +229,7 @@ static int mt7921u_probe(struct usb_interface *usb_intf,
 	if (ret)
 		goto error;
 
-	ret = mt7921u_dma_init(dev, false);
+	ret = mt792xu_dma_init(dev, false);
 	if (ret)
 		goto error;
 
@@ -291,7 +263,7 @@ static void mt7921u_disconnect(struct usb_interface *usb_intf)
 		return;
 
 	mt76_unregister_device(&dev->mt76);
-	mt7921u_cleanup(dev);
+	mt792xu_cleanup(dev);
 
 	usb_set_intfdata(usb_intf, NULL);
 	usb_put_dev(interface_to_usbdev(usb_intf));
@@ -350,7 +322,7 @@ static int mt7921u_resume(struct usb_interface *intf)
 	}
 
 	if (reinit || mt792x_dma_need_reinit(dev)) {
-		err = mt7921u_dma_init(dev, true);
+		err = mt792xu_dma_init(dev, true);
 		if (err)
 			goto failed;
 	}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/usb_mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/usb_mac.c
deleted file mode 100644
index f7cb6c542af5..000000000000
--- a/drivers/net/wireless/mediatek/mt76/mt7921/usb_mac.c
+++ /dev/null
@@ -1,255 +0,0 @@
-// SPDX-License-Identifier: ISC
-/* Copyright (C) 2022 MediaTek Inc.
- *
- * Author: Lorenzo Bianconi <lorenzo@kernel.org>
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/usb.h>
-
-#include "mt7921.h"
-#include "mcu.h"
-#include "../mt76_connac2_mac.h"
-
-static u32 mt7921u_uhw_rr(struct mt76_dev *dev, u32 addr)
-{
-	u32 ret;
-
-	mutex_lock(&dev->usb.usb_ctrl_mtx);
-	ret = ___mt76u_rr(dev, MT_VEND_DEV_MODE,
-			  USB_DIR_IN | MT_USB_TYPE_UHW_VENDOR, addr);
-	mutex_unlock(&dev->usb.usb_ctrl_mtx);
-
-	return ret;
-}
-
-static void mt7921u_uhw_wr(struct mt76_dev *dev, u32 addr, u32 val)
-{
-	mutex_lock(&dev->usb.usb_ctrl_mtx);
-	___mt76u_wr(dev, MT_VEND_WRITE,
-		    USB_DIR_OUT | MT_USB_TYPE_UHW_VENDOR, addr, val);
-	mutex_unlock(&dev->usb.usb_ctrl_mtx);
-}
-
-static void mt7921u_dma_prefetch(struct mt792x_dev *dev)
-{
-	mt76_rmw(dev, MT_UWFDMA0_TX_RING_EXT_CTRL(0),
-		 MT_WPDMA0_MAX_CNT_MASK, 4);
-	mt76_rmw(dev, MT_UWFDMA0_TX_RING_EXT_CTRL(0),
-		 MT_WPDMA0_BASE_PTR_MASK, 0x80);
-
-	mt76_rmw(dev, MT_UWFDMA0_TX_RING_EXT_CTRL(1),
-		 MT_WPDMA0_MAX_CNT_MASK, 4);
-	mt76_rmw(dev, MT_UWFDMA0_TX_RING_EXT_CTRL(1),
-		 MT_WPDMA0_BASE_PTR_MASK, 0xc0);
-
-	mt76_rmw(dev, MT_UWFDMA0_TX_RING_EXT_CTRL(2),
-		 MT_WPDMA0_MAX_CNT_MASK, 4);
-	mt76_rmw(dev, MT_UWFDMA0_TX_RING_EXT_CTRL(2),
-		 MT_WPDMA0_BASE_PTR_MASK, 0x100);
-
-	mt76_rmw(dev, MT_UWFDMA0_TX_RING_EXT_CTRL(3),
-		 MT_WPDMA0_MAX_CNT_MASK, 4);
-	mt76_rmw(dev, MT_UWFDMA0_TX_RING_EXT_CTRL(3),
-		 MT_WPDMA0_BASE_PTR_MASK, 0x140);
-
-	mt76_rmw(dev, MT_UWFDMA0_TX_RING_EXT_CTRL(4),
-		 MT_WPDMA0_MAX_CNT_MASK, 4);
-	mt76_rmw(dev, MT_UWFDMA0_TX_RING_EXT_CTRL(4),
-		 MT_WPDMA0_BASE_PTR_MASK, 0x180);
-
-	mt76_rmw(dev, MT_UWFDMA0_TX_RING_EXT_CTRL(16),
-		 MT_WPDMA0_MAX_CNT_MASK, 4);
-	mt76_rmw(dev, MT_UWFDMA0_TX_RING_EXT_CTRL(16),
-		 MT_WPDMA0_BASE_PTR_MASK, 0x280);
-
-	mt76_rmw(dev, MT_UWFDMA0_TX_RING_EXT_CTRL(17),
-		 MT_WPDMA0_MAX_CNT_MASK, 4);
-	mt76_rmw(dev, MT_UWFDMA0_TX_RING_EXT_CTRL(17),
-		 MT_WPDMA0_BASE_PTR_MASK,  0x2c0);
-}
-
-static void mt7921u_wfdma_init(struct mt792x_dev *dev)
-{
-	mt7921u_dma_prefetch(dev);
-
-	mt76_clear(dev, MT_UWFDMA0_GLO_CFG, MT_WFDMA0_GLO_CFG_OMIT_RX_INFO);
-	mt76_set(dev, MT_UWFDMA0_GLO_CFG,
-		 MT_WFDMA0_GLO_CFG_OMIT_TX_INFO |
-		 MT_WFDMA0_GLO_CFG_OMIT_RX_INFO_PFET2 |
-		 MT_WFDMA0_GLO_CFG_FW_DWLD_BYPASS_DMASHDL |
-		 MT_WFDMA0_GLO_CFG_TX_DMA_EN |
-		 MT_WFDMA0_GLO_CFG_RX_DMA_EN);
-
-	/* disable dmashdl */
-	mt76_clear(dev, MT_UWFDMA0_GLO_CFG_EXT0,
-		   MT_WFDMA0_CSR_TX_DMASHDL_ENABLE);
-	mt76_set(dev, MT_DMASHDL_SW_CONTROL, MT_DMASHDL_DMASHDL_BYPASS);
-
-	mt76_set(dev, MT_WFDMA_DUMMY_CR, MT_WFDMA_NEED_REINIT);
-}
-
-static int mt7921u_dma_rx_evt_ep4(struct mt792x_dev *dev)
-{
-	if (!mt76_poll(dev, MT_UWFDMA0_GLO_CFG,
-		       MT_WFDMA0_GLO_CFG_RX_DMA_BUSY, 0, 1000))
-		return -ETIMEDOUT;
-
-	mt76_clear(dev, MT_UWFDMA0_GLO_CFG, MT_WFDMA0_GLO_CFG_RX_DMA_EN);
-	mt76_set(dev, MT_WFDMA_HOST_CONFIG,
-		 MT_WFDMA_HOST_CONFIG_USB_RXEVT_EP4_EN);
-	mt76_set(dev, MT_UWFDMA0_GLO_CFG, MT_WFDMA0_GLO_CFG_RX_DMA_EN);
-
-	return 0;
-}
-
-static void mt7921u_epctl_rst_opt(struct mt792x_dev *dev, bool reset)
-{
-	u32 val;
-
-	/* usb endpoint reset opt
-	 * bits[4,9]: out blk ep 4-9
-	 * bits[20,21]: in blk ep 4-5
-	 * bits[22]: in int ep 6
-	 */
-	val = mt7921u_uhw_rr(&dev->mt76, MT_SSUSB_EPCTL_CSR_EP_RST_OPT);
-	if (reset)
-		val |= GENMASK(9, 4) | GENMASK(22, 20);
-	else
-		val &= ~(GENMASK(9, 4) | GENMASK(22, 20));
-	mt7921u_uhw_wr(&dev->mt76, MT_SSUSB_EPCTL_CSR_EP_RST_OPT, val);
-}
-
-int mt7921u_dma_init(struct mt792x_dev *dev, bool resume)
-{
-	int err;
-
-	mt7921u_wfdma_init(dev);
-
-	mt76_clear(dev, MT_UDMA_WLCFG_0, MT_WL_RX_FLUSH);
-
-	mt76_set(dev, MT_UDMA_WLCFG_0,
-		 MT_WL_RX_EN | MT_WL_TX_EN |
-		 MT_WL_RX_MPSZ_PAD0 | MT_TICK_1US_EN);
-	mt76_clear(dev, MT_UDMA_WLCFG_0,
-		   MT_WL_RX_AGG_TO | MT_WL_RX_AGG_LMT);
-	mt76_clear(dev, MT_UDMA_WLCFG_1, MT_WL_RX_AGG_PKT_LMT);
-
-	if (resume)
-		return 0;
-
-	err = mt7921u_dma_rx_evt_ep4(dev);
-	if (err)
-		return err;
-
-	mt7921u_epctl_rst_opt(dev, false);
-
-	return 0;
-}
-
-int mt7921u_wfsys_reset(struct mt792x_dev *dev)
-{
-	u32 val;
-	int i;
-
-	mt7921u_epctl_rst_opt(dev, false);
-
-	val = mt7921u_uhw_rr(&dev->mt76, MT_CBTOP_RGU_WF_SUBSYS_RST);
-	val |= MT_CBTOP_RGU_WF_SUBSYS_RST_WF_WHOLE_PATH;
-	mt7921u_uhw_wr(&dev->mt76, MT_CBTOP_RGU_WF_SUBSYS_RST, val);
-
-	usleep_range(10, 20);
-
-	val = mt7921u_uhw_rr(&dev->mt76, MT_CBTOP_RGU_WF_SUBSYS_RST);
-	val &= ~MT_CBTOP_RGU_WF_SUBSYS_RST_WF_WHOLE_PATH;
-	mt7921u_uhw_wr(&dev->mt76, MT_CBTOP_RGU_WF_SUBSYS_RST, val);
-
-	mt7921u_uhw_wr(&dev->mt76, MT_UDMA_CONN_INFRA_STATUS_SEL, 0);
-	for (i = 0; i < MT792x_WFSYS_INIT_RETRY_COUNT; i++) {
-		val = mt7921u_uhw_rr(&dev->mt76, MT_UDMA_CONN_INFRA_STATUS);
-		if (val & MT_UDMA_CONN_WFSYS_INIT_DONE)
-			break;
-
-		msleep(100);
-	}
-
-	if (i == MT792x_WFSYS_INIT_RETRY_COUNT)
-		return -ETIMEDOUT;
-
-	return 0;
-}
-
-int mt7921u_init_reset(struct mt792x_dev *dev)
-{
-	set_bit(MT76_RESET, &dev->mphy.state);
-
-	wake_up(&dev->mt76.mcu.wait);
-	skb_queue_purge(&dev->mt76.mcu.res_q);
-
-	mt76u_stop_rx(&dev->mt76);
-	mt76u_stop_tx(&dev->mt76);
-
-	mt7921u_wfsys_reset(dev);
-
-	clear_bit(MT76_RESET, &dev->mphy.state);
-
-	return mt76u_resume_rx(&dev->mt76);
-}
-
-int mt7921u_mac_reset(struct mt792x_dev *dev)
-{
-	int err;
-
-	mt76_txq_schedule_all(&dev->mphy);
-	mt76_worker_disable(&dev->mt76.tx_worker);
-
-	set_bit(MT76_RESET, &dev->mphy.state);
-	set_bit(MT76_MCU_RESET, &dev->mphy.state);
-
-	wake_up(&dev->mt76.mcu.wait);
-	skb_queue_purge(&dev->mt76.mcu.res_q);
-
-	mt76u_stop_rx(&dev->mt76);
-	mt76u_stop_tx(&dev->mt76);
-
-	mt7921u_wfsys_reset(dev);
-
-	clear_bit(MT76_MCU_RESET, &dev->mphy.state);
-	err = mt76u_resume_rx(&dev->mt76);
-	if (err)
-		goto out;
-
-	err = mt7921u_mcu_power_on(dev);
-	if (err)
-		goto out;
-
-	err = mt7921u_dma_init(dev, false);
-	if (err)
-		goto out;
-
-	mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE);
-	mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
-
-	err = mt7921_run_firmware(dev);
-	if (err)
-		goto out;
-
-	mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
-
-	err = mt7921_mcu_set_eeprom(dev);
-	if (err)
-		goto out;
-
-	err = mt7921_mac_init(dev);
-	if (err)
-		goto out;
-
-	err = __mt7921_start(&dev->phy);
-out:
-	clear_bit(MT76_RESET, &dev->mphy.state);
-
-	mt76_worker_enable(&dev->mt76.tx_worker);
-
-	return err;
-}