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

Pull networking updates from David Miller:

 1) Significantly shrink the core networking routing structures. Result
    of http://vger.kernel.org/~davem/seoul2017_netdev_keynote.pdf

 2) Add netdevsim driver for testing various offloads, from Jakub
    Kicinski.

 3) Support cross-chip FDB operations in DSA, from Vivien Didelot.

 4) Add a 2nd listener hash table for TCP, similar to what was done for
    UDP. From Martin KaFai Lau.

 5) Add eBPF based queue selection to tun, from Jason Wang.

 6) Lockless qdisc support, from John Fastabend.

 7) SCTP stream interleave support, from Xin Long.

 8) Smoother TCP receive autotuning, from Eric Dumazet.

 9) Lots of erspan tunneling enhancements, from William Tu.

10) Add true function call support to BPF, from Alexei Starovoitov.

11) Add explicit support for GRO HW offloading, from Michael Chan.

12) Support extack generation in more netlink subsystems. From Alexander
    Aring, Quentin Monnet, and Jakub Kicinski.

13) Add 1000BaseX, flow control, and EEE support to mvneta driver. From
    Russell King.

14) Add flow table abstraction to netfilter, from Pablo Neira Ayuso.

15) Many improvements and simplifications to the NFP driver bpf JIT,
    from Jakub Kicinski.

16) Support for ipv6 non-equal cost multipath routing, from Ido
    Schimmel.

17) Add resource abstration to devlink, from Arkadi Sharshevsky.

18) Packet scheduler classifier shared filter block support, from Jiri
    Pirko.

19) Avoid locking in act_csum, from Davide Caratti.

20) devinet_ioctl() simplifications from Al viro.

21) More TCP bpf improvements from Lawrence Brakmo.

22) Add support for onlink ipv6 route flag, similar to ipv4, from David
    Ahern.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1925 commits)
  tls: Add support for encryption using async offload accelerator
  ip6mr: fix stale iterator
  net/sched: kconfig: Remove blank help texts
  openvswitch: meter: Use 64-bit arithmetic instead of 32-bit
  tcp_nv: fix potential integer overflow in tcpnv_acked
  r8169: fix RTL8168EP take too long to complete driver initialization.
  qmi_wwan: Add support for Quectel EP06
  rtnetlink: enable IFLA_IF_NETNSID for RTM_NEWLINK
  ipmr: Fix ptrdiff_t print formatting
  ibmvnic: Wait for device response when changing MAC
  qlcnic: fix deadlock bug
  tcp: release sk_frag.page in tcp_disconnect
  ipv4: Get the address of interface correctly.
  net_sched: gen_estimator: fix lockdep splat
  net: macb: Handle HRESP error
  net/mlx5e: IPoIB, Fix copy-paste bug in flow steering refactoring
  ipv6: addrconf: break critical section in addrconf_verify_rtnl()
  ipv6: change route cache aging logic
  i40e/i40evf: Update DESC_NEEDED value to reflect larger value
  bnxt_en: cleanup DIM work on device shutdown
  ...

1 files changed, 453 insertions, 0 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2_mcu.c b/drivers/net/wireless/mediatek/mt76/mt76x2_mcu.c
new file mode 100644
index 0000000..15820b1
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt76x2_mcu.c
@@ -0,0 +1,453 @@
+/*
+ * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/firmware.h>
+#include <linux/delay.h>
+
+#include "mt76x2.h"
+#include "mt76x2_mcu.h"
+#include "mt76x2_dma.h"
+#include "mt76x2_eeprom.h"
+
+struct mt76x2_fw_header {
+	__le32 ilm_len;
+	__le32 dlm_len;
+	__le16 build_ver;
+	__le16 fw_ver;
+	u8 pad[4];
+	char build_time[16];
+};
+
+struct mt76x2_patch_header {
+	char build_time[16];
+	char platform[4];
+	char hw_version[4];
+	char patch_version[4];
+	u8 pad[2];
+};
+
+static struct sk_buff *mt76x2_mcu_msg_alloc(const void *data, int len)
+{
+	struct sk_buff *skb;
+
+	skb = alloc_skb(len, GFP_KERNEL);
+	if (!skb)
+		return NULL;
+	memcpy(skb_put(skb, len), data, len);
+
+	return skb;
+}
+
+static struct sk_buff *
+mt76x2_mcu_get_response(struct mt76x2_dev *dev, unsigned long expires)
+{
+	unsigned long timeout;
+
+	if (!time_is_after_jiffies(expires))
+		return NULL;
+
+	timeout = expires - jiffies;
+	wait_event_timeout(dev->mcu.wait, !skb_queue_empty(&dev->mcu.res_q),
+			   timeout);
+	return skb_dequeue(&dev->mcu.res_q);
+}
+
+static int
+mt76x2_mcu_msg_send(struct mt76x2_dev *dev, struct sk_buff *skb,
+		    enum mcu_cmd cmd)
+{
+	unsigned long expires = jiffies + HZ;
+	int ret;
+	u8 seq;
+
+	if (!skb)
+		return -EINVAL;
+
+	mutex_lock(&dev->mcu.mutex);
+
+	seq = ++dev->mcu.msg_seq & 0xf;
+	if (!seq)
+		seq = ++dev->mcu.msg_seq & 0xf;
+
+	ret = mt76x2_tx_queue_mcu(dev, MT_TXQ_MCU, skb, cmd, seq);
+	if (ret)
+		goto out;
+
+	while (1) {
+		u32 *rxfce;
+		bool check_seq = false;
+
+		skb = mt76x2_mcu_get_response(dev, expires);
+		if (!skb) {
+			dev_err(dev->mt76.dev,
+				"MCU message %d (seq %d) timed out\n", cmd,
+				seq);
+			ret = -ETIMEDOUT;
+			break;
+		}
+
+		rxfce = (u32 *) skb->cb;
+
+		if (seq == FIELD_GET(MT_RX_FCE_INFO_CMD_SEQ, *rxfce))
+			check_seq = true;
+
+		dev_kfree_skb(skb);
+		if (check_seq)
+			break;
+	}
+
+out:
+	mutex_unlock(&dev->mcu.mutex);
+
+	return ret;
+}
+
+static int
+mt76pci_load_rom_patch(struct mt76x2_dev *dev)
+{
+	const struct firmware *fw = NULL;
+	struct mt76x2_patch_header *hdr;
+	bool rom_protect = !is_mt7612(dev);
+	int len, ret = 0;
+	__le32 *cur;
+	u32 patch_mask, patch_reg;
+
+	if (rom_protect && !mt76_poll(dev, MT_MCU_SEMAPHORE_03, 1, 1, 600)) {
+		dev_err(dev->mt76.dev,
+			"Could not get hardware semaphore for ROM PATCH\n");
+		return -ETIMEDOUT;
+	}
+
+	if (mt76xx_rev(dev) >= MT76XX_REV_E3) {
+		patch_mask = BIT(0);
+		patch_reg = MT_MCU_CLOCK_CTL;
+	} else {
+		patch_mask = BIT(1);
+		patch_reg = MT_MCU_COM_REG0;
+	}
+
+	if (rom_protect && (mt76_rr(dev, patch_reg) & patch_mask)) {
+		dev_info(dev->mt76.dev, "ROM patch already applied\n");
+		goto out;
+	}
+
+	ret = request_firmware(&fw, MT7662_ROM_PATCH, dev->mt76.dev);
+	if (ret)
+		goto out;
+
+	if (!fw || !fw->data || fw->size <= sizeof(*hdr)) {
+		ret = -EIO;
+		dev_err(dev->mt76.dev, "Failed to load firmware\n");
+		goto out;
+	}
+
+	hdr = (struct mt76x2_patch_header *) fw->data;
+	dev_info(dev->mt76.dev, "ROM patch build: %.15s\n", hdr->build_time);
+
+	mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, MT_MCU_ROM_PATCH_OFFSET);
+
+	cur = (__le32 *) (fw->data + sizeof(*hdr));
+	len = fw->size - sizeof(*hdr);
+	mt76_wr_copy(dev, MT_MCU_ROM_PATCH_ADDR, cur, len);
+
+	mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, 0);
+
+	/* Trigger ROM */
+	mt76_wr(dev, MT_MCU_INT_LEVEL, 4);
+
+	if (!mt76_poll_msec(dev, patch_reg, patch_mask, patch_mask, 2000)) {
+		dev_err(dev->mt76.dev, "Failed to load ROM patch\n");
+		ret = -ETIMEDOUT;
+	}
+
+out:
+	/* release semaphore */
+	if (rom_protect)
+		mt76_wr(dev, MT_MCU_SEMAPHORE_03, 1);
+	release_firmware(fw);
+	return ret;
+}
+
+static int
+mt76pci_load_firmware(struct mt76x2_dev *dev)
+{
+	const struct firmware *fw;
+	const struct mt76x2_fw_header *hdr;
+	int i, len, ret;
+	__le32 *cur;
+	u32 offset, val;
+
+	ret = request_firmware(&fw, MT7662_FIRMWARE, dev->mt76.dev);
+	if (ret)
+		return ret;
+
+	if (!fw || !fw->data || fw->size < sizeof(*hdr))
+		goto error;
+
+	hdr = (const struct mt76x2_fw_header *) fw->data;
+
+	len = sizeof(*hdr);
+	len += le32_to_cpu(hdr->ilm_len);
+	len += le32_to_cpu(hdr->dlm_len);
+
+	if (fw->size != len)
+		goto error;
+
+	val = le16_to_cpu(hdr->fw_ver);
+	dev_info(dev->mt76.dev, "Firmware Version: %d.%d.%02d\n",
+		 (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf);
+
+	val = le16_to_cpu(hdr->build_ver);
+	dev_info(dev->mt76.dev, "Build: %x\n", val);
+	dev_info(dev->mt76.dev, "Build Time: %.16s\n", hdr->build_time);
+
+	cur = (__le32 *) (fw->data + sizeof(*hdr));
+	len = le32_to_cpu(hdr->ilm_len);
+
+	mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, MT_MCU_ILM_OFFSET);
+	mt76_wr_copy(dev, MT_MCU_ILM_ADDR, cur, len);
+
+	cur += len / sizeof(*cur);
+	len = le32_to_cpu(hdr->dlm_len);
+
+	if (mt76xx_rev(dev) >= MT76XX_REV_E3)
+		offset = MT_MCU_DLM_ADDR_E3;
+	else
+		offset = MT_MCU_DLM_ADDR;
+
+	mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, MT_MCU_DLM_OFFSET);
+	mt76_wr_copy(dev, offset, cur, len);
+
+	mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, 0);
+
+	val = mt76x2_eeprom_get(dev, MT_EE_NIC_CONF_2);
+	if (FIELD_GET(MT_EE_NIC_CONF_2_XTAL_OPTION, val) == 1)
+		mt76_set(dev, MT_MCU_COM_REG0, BIT(30));
+
+	/* trigger firmware */
+	mt76_wr(dev, MT_MCU_INT_LEVEL, 2);
+	for (i = 200; i > 0; i--) {
+		val = mt76_rr(dev, MT_MCU_COM_REG0);
+
+		if (val & 1)
+			break;
+
+		msleep(10);
+	}
+
+	if (!i) {
+		dev_err(dev->mt76.dev, "Firmware failed to start\n");
+		release_firmware(fw);
+		return -ETIMEDOUT;
+	}
+
+	dev_info(dev->mt76.dev, "Firmware running!\n");
+
+	release_firmware(fw);
+
+	return ret;
+
+error:
+	dev_err(dev->mt76.dev, "Invalid firmware\n");
+	release_firmware(fw);
+	return -ENOENT;
+}
+
+static int
+mt76x2_mcu_function_select(struct mt76x2_dev *dev, enum mcu_function func,
+			   u32 val)
+{
+	struct sk_buff *skb;
+	struct {
+	    __le32 id;
+	    __le32 value;
+	} __packed __aligned(4) msg = {
+	    .id = cpu_to_le32(func),
+	    .value = cpu_to_le32(val),
+	};
+
+	skb = mt76x2_mcu_msg_alloc(&msg, sizeof(msg));
+	return mt76x2_mcu_msg_send(dev, skb, CMD_FUN_SET_OP);
+}
+
+int mt76x2_mcu_load_cr(struct mt76x2_dev *dev, u8 type, u8 temp_level,
+		       u8 channel)
+{
+	struct sk_buff *skb;
+	struct {
+		u8 cr_mode;
+		u8 temp;
+		u8 ch;
+		u8 _pad0;
+
+		__le32 cfg;
+	} __packed __aligned(4) msg = {
+		.cr_mode = type,
+		.temp = temp_level,
+		.ch = channel,
+	};
+	u32 val;
+
+	val = BIT(31);
+	val |= (mt76x2_eeprom_get(dev, MT_EE_NIC_CONF_0) >> 8) & 0x00ff;
+	val |= (mt76x2_eeprom_get(dev, MT_EE_NIC_CONF_1) << 8) & 0xff00;
+	msg.cfg = cpu_to_le32(val);
+
+	/* first set the channel without the extension channel info */
+	skb = mt76x2_mcu_msg_alloc(&msg, sizeof(msg));
+	return mt76x2_mcu_msg_send(dev, skb, CMD_LOAD_CR);
+}
+
+int mt76x2_mcu_set_channel(struct mt76x2_dev *dev, u8 channel, u8 bw,
+			   u8 bw_index, bool scan)
+{
+	struct sk_buff *skb;
+	struct {
+		u8 idx;
+		u8 scan;
+		u8 bw;
+		u8 _pad0;
+
+		__le16 chainmask;
+		u8 ext_chan;
+		u8 _pad1;
+
+	} __packed __aligned(4) msg = {
+		.idx = channel,
+		.scan = scan,
+		.bw = bw,
+		.chainmask = cpu_to_le16(dev->chainmask),
+	};
+
+	/* first set the channel without the extension channel info */
+	skb = mt76x2_mcu_msg_alloc(&msg, sizeof(msg));
+	mt76x2_mcu_msg_send(dev, skb, CMD_SWITCH_CHANNEL_OP);
+
+	usleep_range(5000, 10000);
+
+	msg.ext_chan = 0xe0 + bw_index;
+	skb = mt76x2_mcu_msg_alloc(&msg, sizeof(msg));
+	return mt76x2_mcu_msg_send(dev, skb, CMD_SWITCH_CHANNEL_OP);
+}
+
+int mt76x2_mcu_set_radio_state(struct mt76x2_dev *dev, bool on)
+{
+	struct sk_buff *skb;
+	struct {
+		__le32 mode;
+		__le32 level;
+	} __packed __aligned(4) msg = {
+		.mode = cpu_to_le32(on ? RADIO_ON : RADIO_OFF),
+		.level = cpu_to_le32(0),
+	};
+
+	skb = mt76x2_mcu_msg_alloc(&msg, sizeof(msg));
+	return mt76x2_mcu_msg_send(dev, skb, CMD_POWER_SAVING_OP);
+}
+
+int mt76x2_mcu_calibrate(struct mt76x2_dev *dev, enum mcu_calibration type,
+			 u32 param)
+{
+	struct sk_buff *skb;
+	struct {
+		__le32 id;
+		__le32 value;
+	} __packed __aligned(4) msg = {
+		.id = cpu_to_le32(type),
+		.value = cpu_to_le32(param),
+	};
+	int ret;
+
+	mt76_clear(dev, MT_MCU_COM_REG0, BIT(31));
+
+	skb = mt76x2_mcu_msg_alloc(&msg, sizeof(msg));
+	ret = mt76x2_mcu_msg_send(dev, skb, CMD_CALIBRATION_OP);
+	if (ret)
+		return ret;
+
+	if (WARN_ON(!mt76_poll_msec(dev, MT_MCU_COM_REG0,
+				    BIT(31), BIT(31), 100)))
+		return -ETIMEDOUT;
+
+	return 0;
+}
+
+int mt76x2_mcu_tssi_comp(struct mt76x2_dev *dev,
+			 struct mt76x2_tssi_comp *tssi_data)
+{
+	struct sk_buff *skb;
+	struct {
+		__le32 id;
+		struct mt76x2_tssi_comp data;
+	} __packed __aligned(4) msg = {
+		.id = cpu_to_le32(MCU_CAL_TSSI_COMP),
+		.data = *tssi_data,
+	};
+
+	skb = mt76x2_mcu_msg_alloc(&msg, sizeof(msg));
+	return mt76x2_mcu_msg_send(dev, skb, CMD_CALIBRATION_OP);
+}
+
+int mt76x2_mcu_init_gain(struct mt76x2_dev *dev, u8 channel, u32 gain,
+			 bool force)
+{
+	struct sk_buff *skb;
+	struct {
+		__le32 channel;
+		__le32 gain_val;
+	} __packed __aligned(4) msg = {
+		.channel = cpu_to_le32(channel),
+		.gain_val = cpu_to_le32(gain),
+	};
+
+	if (force)
+		msg.channel |= cpu_to_le32(BIT(31));
+
+	skb = mt76x2_mcu_msg_alloc(&msg, sizeof(msg));
+	return mt76x2_mcu_msg_send(dev, skb, CMD_INIT_GAIN_OP);
+}
+
+int mt76x2_mcu_init(struct mt76x2_dev *dev)
+{
+	int ret;
+
+	mutex_init(&dev->mcu.mutex);
+
+	ret = mt76pci_load_rom_patch(dev);
+	if (ret)
+		return ret;
+
+	ret = mt76pci_load_firmware(dev);
+	if (ret)
+		return ret;
+
+	mt76x2_mcu_function_select(dev, Q_SELECT, 1);
+	return 0;
+}
+
+int mt76x2_mcu_cleanup(struct mt76x2_dev *dev)
+{
+	struct sk_buff *skb;
+
+	mt76_wr(dev, MT_MCU_INT_LEVEL, 1);
+	usleep_range(20000, 30000);
+
+	while ((skb = skb_dequeue(&dev->mcu.res_q)) != NULL)
+		dev_kfree_skb(skb);
+
+	return 0;
+}