Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:
 "Highlights:

   - Gustavo A. R. Silva keeps working on the implicit switch fallthru
     changes.

   - Support 802.11ax High-Efficiency wireless in cfg80211 et al, From
     Luca Coelho.

   - Re-enable ASPM in r8169, from Kai-Heng Feng.

   - Add virtual XFRM interfaces, which avoids all of the limitations of
     existing IPSEC tunnels. From Steffen Klassert.

   - Convert GRO over to use a hash table, so that when we have many
     flows active we don't traverse a long list during accumluation.

   - Many new self tests for routing, TC, tunnels, etc. Too many
     contributors to mention them all, but I'm really happy to keep
     seeing this stuff.

   - Hardware timestamping support for dpaa_eth/fsl-fman from Yangbo Lu.

   - Lots of cleanups and fixes in L2TP code from Guillaume Nault.

   - Add IPSEC offload support to netdevsim, from Shannon Nelson.

   - Add support for slotting with non-uniform distribution to netem
     packet scheduler, from Yousuk Seung.

   - Add UDP GSO support to mlx5e, from Boris Pismenny.

   - Support offloading of Team LAG in NFP, from John Hurley.

   - Allow to configure TX queue selection based upon RX queue, from
     Amritha Nambiar.

   - Support ethtool ring size configuration in aquantia, from Anton
     Mikaev.

   - Support DSCP and flowlabel per-transport in SCTP, from Xin Long.

   - Support list based batching and stack traversal of SKBs, this is
     very exciting work. From Edward Cree.

   - Busyloop optimizations in vhost_net, from Toshiaki Makita.

   - Introduce the ETF qdisc, which allows time based transmissions. IGB
     can offload this in hardware. From Vinicius Costa Gomes.

   - Add parameter support to devlink, from Moshe Shemesh.

   - Several multiplication and division optimizations for BPF JIT in
     nfp driver, from Jiong Wang.

   - Lots of prepatory work to make more of the packet scheduler layer
     lockless, when possible, from Vlad Buslov.

   - Add ACK filter and NAT awareness to sch_cake packet scheduler, from
     Toke Høiland-Jørgensen.

   - Support regions and region snapshots in devlink, from Alex Vesker.

   - Allow to attach XDP programs to both HW and SW at the same time on
     a given device, with initial support in nfp. From Jakub Kicinski.

   - Add TLS RX offload and support in mlx5, from Ilya Lesokhin.

   - Use PHYLIB in r8169 driver, from Heiner Kallweit.

   - All sorts of changes to support Spectrum 2 in mlxsw driver, from
     Ido Schimmel.

   - PTP support in mv88e6xxx DSA driver, from Andrew Lunn.

   - Make TCP_USER_TIMEOUT socket option more accurate, from Jon
     Maxwell.

   - Support for templates in packet scheduler classifier, from Jiri
     Pirko.

   - IPV6 support in RDS, from Ka-Cheong Poon.

   - Native tproxy support in nf_tables, from Máté Eckl.

   - Maintain IP fragment queue in an rbtree, but optimize properly for
     in-order frags. From Peter Oskolkov.

   - Improvde handling of ACKs on hole repairs, from Yuchung Cheng"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1996 commits)
  bpf: test: fix spelling mistake "REUSEEPORT" -> "REUSEPORT"
  hv/netvsc: Fix NULL dereference at single queue mode fallback
  net: filter: mark expected switch fall-through
  xen-netfront: fix warn message as irq device name has '/'
  cxgb4: Add new T5 PCI device ids 0x50af and 0x50b0
  net: dsa: mv88e6xxx: missing unlock on error path
  rds: fix building with IPV6=m
  inet/connection_sock: prefer _THIS_IP_ to current_text_addr
  net: dsa: mv88e6xxx: bitwise vs logical bug
  net: sock_diag: Fix spectre v1 gadget in __sock_diag_cmd()
  ieee802154: hwsim: using right kind of iteration
  net: hns3: Add vlan filter setting by ethtool command -K
  net: hns3: Set tx ring' tc info when netdev is up
  net: hns3: Remove tx ring BD len register in hns3_enet
  net: hns3: Fix desc num set to default when setting channel
  net: hns3: Fix for phy link issue when using marvell phy driver
  net: hns3: Fix for information of phydev lost problem when down/up
  net: hns3: Fix for command format parsing error in hclge_is_all_function_id_zero
  net: hns3: Add support for serdes loopback selftest
  bnxt_en: take coredump_record structure off stack
  ...

1 files changed, 381 insertions, 0 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c
new file mode 100644
index 000000000000..54ae1f113be2
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c
@@ -0,0 +1,381 @@
+/*
+ * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+
+#include "mt76x0.h"
+#include "usb.h"
+#include "trace.h"
+
+static struct usb_device_id mt76x0_device_table[] = {
+	{ USB_DEVICE(0x148F, 0x7610) },	/* MT7610U */
+	{ USB_DEVICE(0x13B1, 0x003E) },	/* Linksys AE6000 */
+	{ USB_DEVICE(0x0E8D, 0x7610) },	/* Sabrent NTWLAC */
+	{ USB_DEVICE(0x7392, 0xa711) },	/* Edimax 7711mac */
+	{ USB_DEVICE(0x7392, 0xb711) },	/* Edimax / Elecom  */
+	{ USB_DEVICE(0x148f, 0x761a) },	/* TP-Link TL-WDN5200 */
+	{ USB_DEVICE(0x148f, 0x760a) },	/* TP-Link unknown */
+	{ USB_DEVICE(0x0b05, 0x17d1) },	/* Asus USB-AC51 */
+	{ USB_DEVICE(0x0b05, 0x17db) },	/* Asus USB-AC50 */
+	{ USB_DEVICE(0x0df6, 0x0075) },	/* Sitecom WLA-3100 */
+	{ USB_DEVICE(0x2019, 0xab31) },	/* Planex GW-450D */
+	{ USB_DEVICE(0x2001, 0x3d02) },	/* D-LINK DWA-171 rev B1 */
+	{ USB_DEVICE(0x0586, 0x3425) },	/* Zyxel NWD6505 */
+	{ USB_DEVICE(0x07b8, 0x7610) },	/* AboCom AU7212 */
+	{ USB_DEVICE(0x04bb, 0x0951) },	/* I-O DATA WN-AC433UK */
+	{ USB_DEVICE(0x057c, 0x8502) },	/* AVM FRITZ!WLAN USB Stick AC 430 */
+	{ USB_DEVICE(0x293c, 0x5702) },	/* Comcast Xfinity KXW02AAA  */
+	{ 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_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)
+{
+	struct usb_device *usb_dev = mt76x0_to_usb_dev(dev);
+
+	buf->len = len;
+	buf->urb = usb_alloc_urb(0, GFP_KERNEL);
+	buf->buf = usb_alloc_coherent(usb_dev, buf->len, GFP_KERNEL, &buf->dma);
+
+	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;
+
+	complete(cmpl);
+}
+
+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);
+	}
+
+	dev_err(dev->mt76.dev, "Vendor request req:%02x off:%04x failed:%d\n",
+		req, offset, ret);
+
+	return ret;
+}
+
+void mt76x0_vendor_reset(struct mt76x0_dev *dev)
+{
+	mt76x0_vendor_request(dev, MT_VEND_DEV_MODE, USB_DIR_OUT,
+			      MT_VEND_DEV_MODE_RESET, 0, NULL, 0);
+}
+
+static u32 mt76x0_rr(struct mt76_dev *dev, u32 offset)
+{
+	struct mt76x0_dev *mdev = (struct mt76x0_dev *) dev;
+	int ret;
+	u32 val = ~0;
+
+	WARN_ONCE(offset > USHRT_MAX, "read high off:%08x", offset);
+
+	mutex_lock(&mdev->usb_ctrl_mtx);
+
+	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);
+
+	mutex_unlock(&mdev->usb_ctrl_mtx);
+
+	trace_mt76x0_reg_read(dev, offset, val);
+	return val;
+}
+
+int mt76x0_vendor_single_wr(struct mt76x0_dev *dev, const u8 req,
+			     const u16 offset, const u32 val)
+{
+	struct mt76x0_dev *mdev = dev;
+	int ret;
+
+	mutex_lock(&mdev->usb_ctrl_mtx);
+
+	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);
+
+	mutex_unlock(&mdev->usb_ctrl_mtx);
+
+	return ret;
+}
+
+static void mt76x0_wr(struct mt76_dev *dev, u32 offset, u32 val)
+{
+	struct mt76x0_dev *mdev = (struct mt76x0_dev *) dev;
+	int ret;
+
+	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);
+}
+
+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 void mt76x0_wr_copy(struct mt76_dev *dev, u32 offset,
+			   const void *data, int len)
+{
+	WARN_ONCE(offset & 3, "unaligned write copy off:%08x", offset);
+	WARN_ONCE(len & 3, "short write copy off:%08x", offset);
+
+	mt76x0_burst_write_regs((struct mt76x0_dev *) dev, offset, data, len / 4);
+}
+
+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);
+}
+
+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);
+		}
+	}
+
+	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;
+	}
+
+	return 0;
+}
+
+static int mt76x0_probe(struct usb_interface *usb_intf,
+			 const struct usb_device_id *id)
+{
+	struct usb_device *usb_dev = interface_to_usbdev(usb_intf);
+	struct mt76x0_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);
+	if (!dev)
+		return -ENOMEM;
+
+	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);
+	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)
+		goto err;
+
+	asic_rev = mt76_rr(dev, MT_ASIC_VERSION);
+	mac_rev = mt76_rr(dev, MT_MAC_CSR0);
+	dev_info(dev->mt76.dev, "ASIC revision: %08x MAC revision: %08x\n",
+		 asic_rev, mac_rev);
+
+	/* Note: vendor driver skips this check for MT76X0U */
+	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)
+		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);
+	bool initalized = test_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
+
+	if (!initalized)
+		return;
+
+	ieee80211_unregister_hw(dev->mt76.hw);
+	mt76x0_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)
+{
+	struct mt76x0_dev *dev = usb_get_intfdata(usb_intf);
+
+	mt76x0_cleanup(dev);
+
+	return 0;
+}
+
+static int mt76x0_resume(struct usb_interface *usb_intf)
+{
+	struct mt76x0_dev *dev = usb_get_intfdata(usb_intf);
+	int ret;
+
+	ret = mt76x0_init_hardware(dev);
+	if (ret)
+		return ret;
+
+	set_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
+
+	return 0;
+}
+
+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,
+	.disconnect	= mt76x0_disconnect,
+	.suspend	= mt76x0_suspend,
+	.resume		= mt76x0_resume,
+	.reset_resume	= mt76x0_resume,
+	.soft_unbind	= 1,
+	.disable_hub_initiated_lpm = 1,
+};
+module_usb_driver(mt76x0_driver);