1 files changed, 177 insertions, 205 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c
index 54ae1f113be2..a7fd36c2f633 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c
@@ -16,8 +16,9 @@
 #include <linux/usb.h>
 
 #include "mt76x0.h"
-#include "usb.h"
+#include "mcu.h"
 #include "trace.h"
+#include "../mt76x02_usb.h"
 
 static struct usb_device_id mt76x0_device_table[] = {
 	{ USB_DEVICE(0x148F, 0x7610) },	/* MT7610U */
@@ -40,256 +41,215 @@ static struct usb_device_id mt76x0_device_table[] = {
 	{ USB_DEVICE(0x20f4, 0x806b) },	/* TRENDnet TEW-806UBH  */
 	{ USB_DEVICE(0x7392, 0xc711) }, /* Devolo Wifi ac Stick */
 	{ USB_DEVICE(0x0df6, 0x0079) }, /* Sitecom Europe B.V. ac  Stick */
-	{ USB_DEVICE(0x2357, 0x0105) }, /* TP-LINK Archer T1U */
+	{ USB_DEVICE(0x2357, 0x0105),
+	  .driver_info = 1,	     }, /* TP-LINK Archer T1U */
 	{ USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7630, 0xff, 0x2, 0xff)}, /* MT7630U */
 	{ USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7650, 0xff, 0x2, 0xff)}, /* MT7650U */
 	{ 0, }
 };
 
-bool mt76x0_usb_alloc_buf(struct mt76x0_dev *dev, size_t len,
-			   struct mt76x0_dma_buf *buf)
+static void mt76x0_init_usb_dma(struct mt76x02_dev *dev)
 {
-	struct usb_device *usb_dev = mt76x0_to_usb_dev(dev);
+	u32 val;
 
-	buf->len = len;
-	buf->urb = usb_alloc_urb(0, GFP_KERNEL);
-	buf->buf = usb_alloc_coherent(usb_dev, buf->len, GFP_KERNEL, &buf->dma);
+	val = mt76_rr(dev, MT_USB_DMA_CFG);
 
-	return !buf->urb || !buf->buf;
-}
-
-void mt76x0_usb_free_buf(struct mt76x0_dev *dev, struct mt76x0_dma_buf *buf)
-{
-	struct usb_device *usb_dev = mt76x0_to_usb_dev(dev);
-
-	usb_free_coherent(usb_dev, buf->len, buf->buf, buf->dma);
-	usb_free_urb(buf->urb);
-}
-
-int mt76x0_usb_submit_buf(struct mt76x0_dev *dev, int dir, int ep_idx,
-			   struct mt76x0_dma_buf *buf, gfp_t gfp,
-			   usb_complete_t complete_fn, void *context)
-{
-	struct usb_device *usb_dev = mt76x0_to_usb_dev(dev);
-	unsigned pipe;
-	int ret;
-
-	if (dir == USB_DIR_IN)
-		pipe = usb_rcvbulkpipe(usb_dev, dev->in_ep[ep_idx]);
-	else
-		pipe = usb_sndbulkpipe(usb_dev, dev->out_ep[ep_idx]);
-
-	usb_fill_bulk_urb(buf->urb, usb_dev, pipe, buf->buf, buf->len,
-			  complete_fn, context);
-	buf->urb->transfer_dma = buf->dma;
-	buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
-
-	trace_mt76x0_submit_urb(&dev->mt76, buf->urb);
-	ret = usb_submit_urb(buf->urb, gfp);
-	if (ret)
-		dev_err(dev->mt76.dev, "Error: submit URB dir:%d ep:%d failed:%d\n",
-			dir, ep_idx, ret);
-	return ret;
-}
-
-void mt76x0_complete_urb(struct urb *urb)
-{
-	struct completion *cmpl = urb->context;
+	val |= MT_USB_DMA_CFG_RX_BULK_EN |
+	       MT_USB_DMA_CFG_TX_BULK_EN;
 
-	complete(cmpl);
-}
+	/* disable AGGR_BULK_RX in order to receive one
+	 * frame in each rx urb and avoid copies
+	 */
+	val &= ~MT_USB_DMA_CFG_RX_BULK_AGG_EN;
+	mt76_wr(dev, MT_USB_DMA_CFG, val);
 
-int mt76x0_vendor_request(struct mt76x0_dev *dev, const u8 req,
-			   const u8 direction, const u16 val, const u16 offset,
-			   void *buf, const size_t buflen)
-{
-	int i, ret;
-	struct usb_device *usb_dev = mt76x0_to_usb_dev(dev);
-	const u8 req_type = direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
-	const unsigned int pipe = (direction == USB_DIR_IN) ?
-		usb_rcvctrlpipe(usb_dev, 0) : usb_sndctrlpipe(usb_dev, 0);
-
-	for (i = 0; i < MT_VEND_REQ_MAX_RETRY; i++) {
-		ret = usb_control_msg(usb_dev, pipe, req, req_type,
-				      val, offset, buf, buflen,
-				      MT_VEND_REQ_TOUT_MS);
-		trace_mt76x0_vend_req(&dev->mt76, pipe, req, req_type, val, offset,
-				  buf, buflen, ret);
-
-		if (ret == -ENODEV)
-			set_bit(MT76_REMOVED, &dev->mt76.state);
-		if (ret >= 0 || ret == -ENODEV)
-			return ret;
-
-		msleep(5);
-	}
+	val = mt76_rr(dev, MT_COM_REG0);
+	if (val & 1)
+		dev_dbg(dev->mt76.dev, "MCU not ready\n");
 
-	dev_err(dev->mt76.dev, "Vendor request req:%02x off:%04x failed:%d\n",
-		req, offset, ret);
+	val = mt76_rr(dev, MT_USB_DMA_CFG);
 
-	return ret;
+	val |= MT_USB_DMA_CFG_RX_DROP_OR_PAD;
+	mt76_wr(dev, MT_USB_DMA_CFG, val);
+	val &= ~MT_USB_DMA_CFG_RX_DROP_OR_PAD;
+	mt76_wr(dev, MT_USB_DMA_CFG, val);
 }
 
-void mt76x0_vendor_reset(struct mt76x0_dev *dev)
+static void mt76x0u_cleanup(struct mt76x02_dev *dev)
 {
-	mt76x0_vendor_request(dev, MT_VEND_DEV_MODE, USB_DIR_OUT,
-			      MT_VEND_DEV_MODE_RESET, 0, NULL, 0);
+	clear_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
+	mt76x0_chip_onoff(dev, false, false);
+	mt76u_queues_deinit(&dev->mt76);
+	mt76u_mcu_deinit(&dev->mt76);
 }
 
-static u32 mt76x0_rr(struct mt76_dev *dev, u32 offset)
+static void mt76x0u_mac_stop(struct mt76x02_dev *dev)
 {
-	struct mt76x0_dev *mdev = (struct mt76x0_dev *) dev;
-	int ret;
-	u32 val = ~0;
+	clear_bit(MT76_STATE_RUNNING, &dev->mt76.state);
+	cancel_delayed_work_sync(&dev->cal_work);
+	cancel_delayed_work_sync(&dev->mac_work);
+	mt76u_stop_stat_wk(&dev->mt76);
 
-	WARN_ONCE(offset > USHRT_MAX, "read high off:%08x", offset);
+	if (test_bit(MT76_REMOVED, &dev->mt76.state))
+		return;
 
-	mutex_lock(&mdev->usb_ctrl_mtx);
+	mt76_clear(dev, MT_BEACON_TIME_CFG, MT_BEACON_TIME_CFG_TIMER_EN |
+		   MT_BEACON_TIME_CFG_SYNC_MODE | MT_BEACON_TIME_CFG_TBTT_EN |
+		   MT_BEACON_TIME_CFG_BEACON_TX);
 
-	ret = mt76x0_vendor_request((struct mt76x0_dev *)dev, MT_VEND_MULTI_READ, USB_DIR_IN,
-				    0, offset, mdev->data, MT_VEND_BUF);
-	if (ret == MT_VEND_BUF)
-		val = get_unaligned_le32(mdev->data);
-	else if (ret > 0)
-		dev_err(dev->dev, "Error: wrong size read:%d off:%08x\n",
-			ret, offset);
+	if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_BUSY, 0, 1000))
+		dev_warn(dev->mt76.dev, "TX DMA did not stop\n");
 
-	mutex_unlock(&mdev->usb_ctrl_mtx);
+	mt76x0_mac_stop(dev);
 
-	trace_mt76x0_reg_read(dev, offset, val);
-	return val;
+	if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_RX_BUSY, 0, 1000))
+		dev_warn(dev->mt76.dev, "RX DMA did not stop\n");
 }
 
-int mt76x0_vendor_single_wr(struct mt76x0_dev *dev, const u8 req,
-			     const u16 offset, const u32 val)
+static int mt76x0u_start(struct ieee80211_hw *hw)
 {
-	struct mt76x0_dev *mdev = dev;
+	struct mt76x02_dev *dev = hw->priv;
 	int ret;
 
-	mutex_lock(&mdev->usb_ctrl_mtx);
+	mutex_lock(&dev->mt76.mutex);
 
-	ret = mt76x0_vendor_request(dev, req, USB_DIR_OUT,
-				    val & 0xffff, offset, NULL, 0);
-	if (!ret)
-		ret = mt76x0_vendor_request(dev, req, USB_DIR_OUT,
-					    val >> 16, offset + 2, NULL, 0);
+	ret = mt76x0_mac_start(dev);
+	if (ret)
+		goto out;
 
-	mutex_unlock(&mdev->usb_ctrl_mtx);
+	ieee80211_queue_delayed_work(dev->mt76.hw, &dev->mac_work,
+				     MT_CALIBRATE_INTERVAL);
+	ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,
+				     MT_CALIBRATE_INTERVAL);
+	set_bit(MT76_STATE_RUNNING, &dev->mt76.state);
 
+out:
+	mutex_unlock(&dev->mt76.mutex);
 	return ret;
 }
 
-static void mt76x0_wr(struct mt76_dev *dev, u32 offset, u32 val)
+static void mt76x0u_stop(struct ieee80211_hw *hw)
 {
-	struct mt76x0_dev *mdev = (struct mt76x0_dev *) dev;
-	int ret;
+	struct mt76x02_dev *dev = hw->priv;
 
-	WARN_ONCE(offset > USHRT_MAX, "write high off:%08x", offset);
-
-	mutex_lock(&mdev->usb_ctrl_mtx);
-
-	put_unaligned_le32(val, mdev->data);
-	ret = mt76x0_vendor_request(mdev, MT_VEND_MULTI_WRITE, USB_DIR_OUT,
-				    0, offset, mdev->data, MT_VEND_BUF);
-	trace_mt76x0_reg_write(dev, offset, val);
-
-	mutex_unlock(&mdev->usb_ctrl_mtx);
+	mutex_lock(&dev->mt76.mutex);
+	mt76x0u_mac_stop(dev);
+	mutex_unlock(&dev->mt76.mutex);
 }
 
-static u32 mt76x0_rmw(struct mt76_dev *dev, u32 offset, u32 mask, u32 val)
-{
-	val |= mt76x0_rr(dev, offset) & ~mask;
-	mt76x0_wr(dev, offset, val);
-	return val;
-}
+static const struct ieee80211_ops mt76x0u_ops = {
+	.tx = mt76x02_tx,
+	.start = mt76x0u_start,
+	.stop = mt76x0u_stop,
+	.add_interface = mt76x02_add_interface,
+	.remove_interface = mt76x02_remove_interface,
+	.config = mt76x0_config,
+	.configure_filter = mt76x02_configure_filter,
+	.bss_info_changed = mt76x0_bss_info_changed,
+	.sta_add = mt76x02_sta_add,
+	.sta_remove = mt76x02_sta_remove,
+	.set_key = mt76x02_set_key,
+	.conf_tx = mt76x02_conf_tx,
+	.sw_scan_start = mt76x0_sw_scan,
+	.sw_scan_complete = mt76x0_sw_scan_complete,
+	.ampdu_action = mt76x02_ampdu_action,
+	.sta_rate_tbl_update = mt76x02_sta_rate_tbl_update,
+	.set_rts_threshold = mt76x0_set_rts_threshold,
+	.wake_tx_queue = mt76_wake_tx_queue,
+};
 
-static void mt76x0_wr_copy(struct mt76_dev *dev, u32 offset,
-			   const void *data, int len)
+static int mt76x0u_register_device(struct mt76x02_dev *dev)
 {
-	WARN_ONCE(offset & 3, "unaligned write copy off:%08x", offset);
-	WARN_ONCE(len & 3, "short write copy off:%08x", offset);
+	struct ieee80211_hw *hw = dev->mt76.hw;
+	int err;
 
-	mt76x0_burst_write_regs((struct mt76x0_dev *) dev, offset, data, len / 4);
-}
+	err = mt76u_alloc_queues(&dev->mt76);
+	if (err < 0)
+		goto out_err;
 
-void mt76x0_addr_wr(struct mt76x0_dev *dev, const u32 offset, const u8 *addr)
-{
-	mt76_wr(dev, offset, get_unaligned_le32(addr));
-	mt76_wr(dev, offset + 4, addr[4] | addr[5] << 8);
-}
+	err = mt76u_mcu_init_rx(&dev->mt76);
+	if (err < 0)
+		goto out_err;
 
-static int mt76x0_assign_pipes(struct usb_interface *usb_intf,
-				struct mt76x0_dev *dev)
-{
-	struct usb_endpoint_descriptor *ep_desc;
-	struct usb_host_interface *intf_desc = usb_intf->cur_altsetting;
-	unsigned i, ep_i = 0, ep_o = 0;
-
-	BUILD_BUG_ON(sizeof(dev->in_ep) < __MT_EP_IN_MAX);
-	BUILD_BUG_ON(sizeof(dev->out_ep) < __MT_EP_OUT_MAX);
-
-	for (i = 0; i < intf_desc->desc.bNumEndpoints; i++) {
-		ep_desc = &intf_desc->endpoint[i].desc;
-
-		if (usb_endpoint_is_bulk_in(ep_desc) &&
-		    ep_i++ < __MT_EP_IN_MAX) {
-			dev->in_ep[ep_i - 1] = usb_endpoint_num(ep_desc);
-			dev->in_max_packet = usb_endpoint_maxp(ep_desc);
-			/* Note: this is ignored by usb sub-system but vendor
-			 *	 code does it. We can drop this at some point.
-			 */
-			dev->in_ep[ep_i - 1] |= USB_DIR_IN;
-		} else if (usb_endpoint_is_bulk_out(ep_desc) &&
-			   ep_o++ < __MT_EP_OUT_MAX) {
-			dev->out_ep[ep_o - 1] = usb_endpoint_num(ep_desc);
-			dev->out_max_packet = usb_endpoint_maxp(ep_desc);
-		}
+	mt76x0_chip_onoff(dev, true, true);
+	if (!mt76x02_wait_for_mac(&dev->mt76)) {
+		err = -ETIMEDOUT;
+		goto out_err;
 	}
 
-	if (ep_i != __MT_EP_IN_MAX || ep_o != __MT_EP_OUT_MAX) {
-		dev_err(dev->mt76.dev, "Error: wrong pipe number in:%d out:%d\n",
-			ep_i, ep_o);
-		return -EINVAL;
-	}
+	err = mt76x0u_mcu_init(dev);
+	if (err < 0)
+		goto out_err;
+
+	mt76x0_init_usb_dma(dev);
+	err = mt76x0_init_hardware(dev);
+	if (err < 0)
+		goto out_err;
+
+	mt76_rmw(dev, MT_US_CYC_CFG, MT_US_CYC_CNT, 0x1e);
+	mt76_wr(dev, MT_TXOP_CTRL_CFG,
+		FIELD_PREP(MT_TXOP_TRUN_EN, 0x3f) |
+		FIELD_PREP(MT_TXOP_EXT_CCA_DLY, 0x58));
+
+	err = mt76x0_register_device(dev);
+	if (err < 0)
+		goto out_err;
+
+	/* check hw sg support in order to enable AMSDU */
+	if (mt76u_check_sg(&dev->mt76))
+		hw->max_tx_fragments = MT_SG_MAX_SIZE;
+	else
+		hw->max_tx_fragments = 1;
+
+	set_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
 
 	return 0;
+
+out_err:
+	mt76x0u_cleanup(dev);
+	return err;
 }
 
-static int mt76x0_probe(struct usb_interface *usb_intf,
+static int mt76x0u_probe(struct usb_interface *usb_intf,
 			 const struct usb_device_id *id)
 {
+	static const struct mt76_driver_ops drv_ops = {
+		.tx_prepare_skb = mt76x02u_tx_prepare_skb,
+		.tx_complete_skb = mt76x02u_tx_complete_skb,
+		.tx_status_data = mt76x02_tx_status_data,
+		.rx_skb = mt76x02_queue_rx_skb,
+	};
 	struct usb_device *usb_dev = interface_to_usbdev(usb_intf);
-	struct mt76x0_dev *dev;
+	struct mt76x02_dev *dev;
 	u32 asic_rev, mac_rev;
 	int ret;
-	static const struct mt76_bus_ops usb_ops = {
-		.rr = mt76x0_rr,
-		.wr = mt76x0_wr,
-		.rmw = mt76x0_rmw,
-		.copy = mt76x0_wr_copy,
-	};
 
-	dev = mt76x0_alloc_device(&usb_intf->dev);
+	dev = mt76x0_alloc_device(&usb_intf->dev, &drv_ops,
+				  &mt76x0u_ops);
 	if (!dev)
 		return -ENOMEM;
 
+	/* Quirk for Archer T1U */
+	if (id->driver_info)
+		dev->no_2ghz = true;
+
 	usb_dev = usb_get_dev(usb_dev);
 	usb_reset_device(usb_dev);
 
 	usb_set_intfdata(usb_intf, dev);
 
-	dev->mt76.bus = &usb_ops;
-
-	ret = mt76x0_assign_pipes(usb_intf, dev);
+	mt76x02u_init_mcu(&dev->mt76);
+	ret = mt76u_init(&dev->mt76, usb_intf);
 	if (ret)
 		goto err;
 
 	/* Disable the HW, otherwise MCU fail to initalize on hot reboot */
 	mt76x0_chip_onoff(dev, false, false);
 
-	ret = mt76x0_wait_asic_ready(dev);
-	if (ret)
+	if (!mt76x02_wait_for_mac(&dev->mt76)) {
+		ret = -ETIMEDOUT;
 		goto err;
+	}
 
 	asic_rev = mt76_rr(dev, MT_ASIC_VERSION);
 	mac_rev = mt76_rr(dev, MT_MAC_CSR0);
@@ -300,77 +260,89 @@ static int mt76x0_probe(struct usb_interface *usb_intf,
 	if (!(mt76_rr(dev, MT_EFUSE_CTRL) & MT_EFUSE_CTRL_SEL))
 		dev_warn(dev->mt76.dev, "Warning: eFUSE not present\n");
 
-	ret = mt76x0_init_hardware(dev);
-	if (ret)
+	ret = mt76x0u_register_device(dev);
+	if (ret < 0)
 		goto err;
 
-	ret = mt76x0_register_device(dev);
-	if (ret)
-		goto err_hw;
-
-	set_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
-
 	return 0;
-err_hw:
-	mt76x0_cleanup(dev);
+
 err:
 	usb_set_intfdata(usb_intf, NULL);
 	usb_put_dev(interface_to_usbdev(usb_intf));
 
-	destroy_workqueue(dev->stat_wq);
 	ieee80211_free_hw(dev->mt76.hw);
 	return ret;
 }
 
 static void mt76x0_disconnect(struct usb_interface *usb_intf)
 {
-	struct mt76x0_dev *dev = usb_get_intfdata(usb_intf);
+	struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
 	bool initalized = test_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
 
 	if (!initalized)
 		return;
 
 	ieee80211_unregister_hw(dev->mt76.hw);
-	mt76x0_cleanup(dev);
+	mt76x0u_cleanup(dev);
 
 	usb_set_intfdata(usb_intf, NULL);
 	usb_put_dev(interface_to_usbdev(usb_intf));
 
-	destroy_workqueue(dev->stat_wq);
 	ieee80211_free_hw(dev->mt76.hw);
 }
 
-static int mt76x0_suspend(struct usb_interface *usb_intf, pm_message_t state)
+static int __maybe_unused mt76x0_suspend(struct usb_interface *usb_intf,
+					 pm_message_t state)
 {
-	struct mt76x0_dev *dev = usb_get_intfdata(usb_intf);
+	struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
+	struct mt76_usb *usb = &dev->mt76.usb;
 
-	mt76x0_cleanup(dev);
+	mt76u_stop_queues(&dev->mt76);
+	mt76x0u_mac_stop(dev);
+	usb_kill_urb(usb->mcu.res.urb);
 
 	return 0;
 }
 
-static int mt76x0_resume(struct usb_interface *usb_intf)
+static int __maybe_unused mt76x0_resume(struct usb_interface *usb_intf)
 {
-	struct mt76x0_dev *dev = usb_get_intfdata(usb_intf);
+	struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
+	struct mt76_usb *usb = &dev->mt76.usb;
 	int ret;
 
+	reinit_completion(&usb->mcu.cmpl);
+	ret = mt76u_submit_buf(&dev->mt76, USB_DIR_IN,
+			       MT_EP_IN_CMD_RESP,
+			       &usb->mcu.res, GFP_KERNEL,
+			       mt76u_mcu_complete_urb,
+			       &usb->mcu.cmpl);
+	if (ret < 0)
+		goto err;
+
+	ret = mt76u_submit_rx_buffers(&dev->mt76);
+	if (ret < 0)
+		goto err;
+
+	tasklet_enable(&usb->rx_tasklet);
+	tasklet_enable(&usb->tx_tasklet);
+
 	ret = mt76x0_init_hardware(dev);
 	if (ret)
-		return ret;
-
-	set_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
+		goto err;
 
 	return 0;
+err:
+	mt76x0u_cleanup(dev);
+	return ret;
 }
 
 MODULE_DEVICE_TABLE(usb, mt76x0_device_table);
-MODULE_FIRMWARE(MT7610_FIRMWARE);
 MODULE_LICENSE("GPL");
 
 static struct usb_driver mt76x0_driver = {
 	.name		= KBUILD_MODNAME,
 	.id_table	= mt76x0_device_table,
-	.probe		= mt76x0_probe,
+	.probe		= mt76x0u_probe,
 	.disconnect	= mt76x0_disconnect,
 	.suspend	= mt76x0_suspend,
 	.resume		= mt76x0_resume,