v4.19.13 snapshot.
diff --git a/include/linux/can/core.h b/include/linux/can/core.h
new file mode 100644
index 0000000..6099bc1
--- /dev/null
+++ b/include/linux/can/core.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * linux/can/core.h
+ *
+ * Protoypes and definitions for CAN protocol modules using the PF_CAN core
+ *
+ * Authors: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
+ * Urs Thuermann <urs.thuermann@volkswagen.de>
+ * Copyright (c) 2002-2017 Volkswagen Group Electronic Research
+ * All rights reserved.
+ *
+ */
+
+#ifndef _CAN_CORE_H
+#define _CAN_CORE_H
+
+#include <linux/can.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+
+#define CAN_VERSION "20170425"
+
+/* increment this number each time you change some user-space interface */
+#define CAN_ABI_VERSION "9"
+
+#define CAN_VERSION_STRING "rev " CAN_VERSION " abi " CAN_ABI_VERSION
+
+#define DNAME(dev) ((dev) ? (dev)->name : "any")
+
+/**
+ * struct can_proto - CAN protocol structure
+ * @type: type argument in socket() syscall, e.g. SOCK_DGRAM.
+ * @protocol: protocol number in socket() syscall.
+ * @ops: pointer to struct proto_ops for sock->ops.
+ * @prot: pointer to struct proto structure.
+ */
+struct can_proto {
+ int type;
+ int protocol;
+ const struct proto_ops *ops;
+ struct proto *prot;
+};
+
+/* function prototypes for the CAN networklayer core (af_can.c) */
+
+extern int can_proto_register(const struct can_proto *cp);
+extern void can_proto_unregister(const struct can_proto *cp);
+
+int can_rx_register(struct net *net, struct net_device *dev,
+ canid_t can_id, canid_t mask,
+ void (*func)(struct sk_buff *, void *),
+ void *data, char *ident, struct sock *sk);
+
+extern void can_rx_unregister(struct net *net, struct net_device *dev,
+ canid_t can_id, canid_t mask,
+ void (*func)(struct sk_buff *, void *),
+ void *data);
+
+extern int can_send(struct sk_buff *skb, int loop);
+extern int can_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
+
+#endif /* !_CAN_CORE_H */
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
new file mode 100644
index 0000000..f01623a
--- /dev/null
+++ b/include/linux/can/dev.h
@@ -0,0 +1,188 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * linux/can/dev.h
+ *
+ * Definitions for the CAN network device driver interface
+ *
+ * Copyright (C) 2006 Andrey Volkov <avolkov@varma-el.com>
+ * Varma Electronics Oy
+ *
+ * Copyright (C) 2008 Wolfgang Grandegger <wg@grandegger.com>
+ *
+ */
+
+#ifndef _CAN_DEV_H
+#define _CAN_DEV_H
+
+#include <linux/can.h>
+#include <linux/can/error.h>
+#include <linux/can/led.h>
+#include <linux/can/netlink.h>
+#include <linux/netdevice.h>
+
+/*
+ * CAN mode
+ */
+enum can_mode {
+ CAN_MODE_STOP = 0,
+ CAN_MODE_START,
+ CAN_MODE_SLEEP
+};
+
+/*
+ * CAN common private data
+ */
+struct can_priv {
+ struct net_device *dev;
+ struct can_device_stats can_stats;
+
+ struct can_bittiming bittiming, data_bittiming;
+ const struct can_bittiming_const *bittiming_const,
+ *data_bittiming_const;
+ const u16 *termination_const;
+ unsigned int termination_const_cnt;
+ u16 termination;
+ const u32 *bitrate_const;
+ unsigned int bitrate_const_cnt;
+ const u32 *data_bitrate_const;
+ unsigned int data_bitrate_const_cnt;
+ u32 bitrate_max;
+ struct can_clock clock;
+
+ enum can_state state;
+
+ /* CAN controller features - see include/uapi/linux/can/netlink.h */
+ u32 ctrlmode; /* current options setting */
+ u32 ctrlmode_supported; /* options that can be modified by netlink */
+ u32 ctrlmode_static; /* static enabled options for driver/hardware */
+
+ int restart_ms;
+ struct delayed_work restart_work;
+
+ int (*do_set_bittiming)(struct net_device *dev);
+ int (*do_set_data_bittiming)(struct net_device *dev);
+ int (*do_set_mode)(struct net_device *dev, enum can_mode mode);
+ int (*do_set_termination)(struct net_device *dev, u16 term);
+ int (*do_get_state)(const struct net_device *dev,
+ enum can_state *state);
+ int (*do_get_berr_counter)(const struct net_device *dev,
+ struct can_berr_counter *bec);
+
+ unsigned int echo_skb_max;
+ struct sk_buff **echo_skb;
+
+#ifdef CONFIG_CAN_LEDS
+ struct led_trigger *tx_led_trig;
+ char tx_led_trig_name[CAN_LED_NAME_SZ];
+ struct led_trigger *rx_led_trig;
+ char rx_led_trig_name[CAN_LED_NAME_SZ];
+ struct led_trigger *rxtx_led_trig;
+ char rxtx_led_trig_name[CAN_LED_NAME_SZ];
+#endif
+};
+
+/*
+ * get_can_dlc(value) - helper macro to cast a given data length code (dlc)
+ * to __u8 and ensure the dlc value to be max. 8 bytes.
+ *
+ * To be used in the CAN netdriver receive path to ensure conformance with
+ * ISO 11898-1 Chapter 8.4.2.3 (DLC field)
+ */
+#define get_can_dlc(i) (min_t(__u8, (i), CAN_MAX_DLC))
+#define get_canfd_dlc(i) (min_t(__u8, (i), CANFD_MAX_DLC))
+
+/* Drop a given socketbuffer if it does not contain a valid CAN frame. */
+static inline bool can_dropped_invalid_skb(struct net_device *dev,
+ struct sk_buff *skb)
+{
+ const struct canfd_frame *cfd = (struct canfd_frame *)skb->data;
+
+ if (skb->protocol == htons(ETH_P_CAN)) {
+ if (unlikely(skb->len != CAN_MTU ||
+ cfd->len > CAN_MAX_DLEN))
+ goto inval_skb;
+ } else if (skb->protocol == htons(ETH_P_CANFD)) {
+ if (unlikely(skb->len != CANFD_MTU ||
+ cfd->len > CANFD_MAX_DLEN))
+ goto inval_skb;
+ } else
+ goto inval_skb;
+
+ return false;
+
+inval_skb:
+ kfree_skb(skb);
+ dev->stats.tx_dropped++;
+ return true;
+}
+
+static inline bool can_is_canfd_skb(const struct sk_buff *skb)
+{
+ /* the CAN specific type of skb is identified by its data length */
+ return skb->len == CANFD_MTU;
+}
+
+/* helper to define static CAN controller features at device creation time */
+static inline void can_set_static_ctrlmode(struct net_device *dev,
+ u32 static_mode)
+{
+ struct can_priv *priv = netdev_priv(dev);
+
+ /* alloc_candev() succeeded => netdev_priv() is valid at this point */
+ priv->ctrlmode = static_mode;
+ priv->ctrlmode_static = static_mode;
+
+ /* override MTU which was set by default in can_setup()? */
+ if (static_mode & CAN_CTRLMODE_FD)
+ dev->mtu = CANFD_MTU;
+}
+
+/* get data length from can_dlc with sanitized can_dlc */
+u8 can_dlc2len(u8 can_dlc);
+
+/* map the sanitized data length to an appropriate data length code */
+u8 can_len2dlc(u8 len);
+
+struct net_device *alloc_candev_mqs(int sizeof_priv, unsigned int echo_skb_max,
+ unsigned int txqs, unsigned int rxqs);
+#define alloc_candev(sizeof_priv, echo_skb_max) \
+ alloc_candev_mqs(sizeof_priv, echo_skb_max, 1, 1)
+#define alloc_candev_mq(sizeof_priv, echo_skb_max, count) \
+ alloc_candev_mqs(sizeof_priv, echo_skb_max, count, count)
+void free_candev(struct net_device *dev);
+
+/* a candev safe wrapper around netdev_priv */
+struct can_priv *safe_candev_priv(struct net_device *dev);
+
+int open_candev(struct net_device *dev);
+void close_candev(struct net_device *dev);
+int can_change_mtu(struct net_device *dev, int new_mtu);
+
+int register_candev(struct net_device *dev);
+void unregister_candev(struct net_device *dev);
+
+int can_restart_now(struct net_device *dev);
+void can_bus_off(struct net_device *dev);
+
+void can_change_state(struct net_device *dev, struct can_frame *cf,
+ enum can_state tx_state, enum can_state rx_state);
+
+void can_put_echo_skb(struct sk_buff *skb, struct net_device *dev,
+ unsigned int idx);
+struct sk_buff *__can_get_echo_skb(struct net_device *dev, unsigned int idx, u8 *len_ptr);
+unsigned int can_get_echo_skb(struct net_device *dev, unsigned int idx);
+void can_free_echo_skb(struct net_device *dev, unsigned int idx);
+
+#ifdef CONFIG_OF
+void of_can_transceiver(struct net_device *dev);
+#else
+static inline void of_can_transceiver(struct net_device *dev) { }
+#endif
+
+struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf);
+struct sk_buff *alloc_canfd_skb(struct net_device *dev,
+ struct canfd_frame **cfd);
+struct sk_buff *alloc_can_err_skb(struct net_device *dev,
+ struct can_frame **cf);
+
+#endif /* !_CAN_DEV_H */
diff --git a/include/linux/can/dev/peak_canfd.h b/include/linux/can/dev/peak_canfd.h
new file mode 100644
index 0000000..46dceef
--- /dev/null
+++ b/include/linux/can/dev/peak_canfd.h
@@ -0,0 +1,308 @@
+/*
+ * CAN driver for PEAK System micro-CAN based adapters
+ *
+ * Copyright (C) 2003-2011 PEAK System-Technik GmbH
+ * Copyright (C) 2011-2013 Stephane Grosjean <s.grosjean@peak-system.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; version 2 of the License.
+ *
+ * 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.
+ */
+#ifndef PUCAN_H
+#define PUCAN_H
+
+/* uCAN commands opcodes list (low-order 10 bits) */
+#define PUCAN_CMD_NOP 0x000
+#define PUCAN_CMD_RESET_MODE 0x001
+#define PUCAN_CMD_NORMAL_MODE 0x002
+#define PUCAN_CMD_LISTEN_ONLY_MODE 0x003
+#define PUCAN_CMD_TIMING_SLOW 0x004
+#define PUCAN_CMD_TIMING_FAST 0x005
+#define PUCAN_CMD_SET_STD_FILTER 0x006
+#define PUCAN_CMD_RESERVED2 0x007
+#define PUCAN_CMD_FILTER_STD 0x008
+#define PUCAN_CMD_TX_ABORT 0x009
+#define PUCAN_CMD_WR_ERR_CNT 0x00a
+#define PUCAN_CMD_SET_EN_OPTION 0x00b
+#define PUCAN_CMD_CLR_DIS_OPTION 0x00c
+#define PUCAN_CMD_RX_BARRIER 0x010
+#define PUCAN_CMD_END_OF_COLLECTION 0x3ff
+
+/* uCAN received messages list */
+#define PUCAN_MSG_CAN_RX 0x0001
+#define PUCAN_MSG_ERROR 0x0002
+#define PUCAN_MSG_STATUS 0x0003
+#define PUCAN_MSG_BUSLOAD 0x0004
+
+#define PUCAN_MSG_CACHE_CRITICAL 0x0102
+
+/* uCAN transmitted messages */
+#define PUCAN_MSG_CAN_TX 0x1000
+
+/* uCAN command common header */
+struct __packed pucan_command {
+ __le16 opcode_channel;
+ u16 args[3];
+};
+
+/* return the opcode from the opcode_channel field of a command */
+static inline u16 pucan_cmd_get_opcode(struct pucan_command *c)
+{
+ return le16_to_cpu(c->opcode_channel) & 0x3ff;
+}
+
+#define PUCAN_TSLOW_BRP_BITS 10
+#define PUCAN_TSLOW_TSGEG1_BITS 8
+#define PUCAN_TSLOW_TSGEG2_BITS 7
+#define PUCAN_TSLOW_SJW_BITS 7
+
+#define PUCAN_TSLOW_BRP_MASK ((1 << PUCAN_TSLOW_BRP_BITS) - 1)
+#define PUCAN_TSLOW_TSEG1_MASK ((1 << PUCAN_TSLOW_TSGEG1_BITS) - 1)
+#define PUCAN_TSLOW_TSEG2_MASK ((1 << PUCAN_TSLOW_TSGEG2_BITS) - 1)
+#define PUCAN_TSLOW_SJW_MASK ((1 << PUCAN_TSLOW_SJW_BITS) - 1)
+
+/* uCAN TIMING_SLOW command fields */
+#define PUCAN_TSLOW_SJW_T(s, t) (((s) & PUCAN_TSLOW_SJW_MASK) | \
+ ((!!(t)) << 7))
+#define PUCAN_TSLOW_TSEG2(t) ((t) & PUCAN_TSLOW_TSEG2_MASK)
+#define PUCAN_TSLOW_TSEG1(t) ((t) & PUCAN_TSLOW_TSEG1_MASK)
+#define PUCAN_TSLOW_BRP(b) ((b) & PUCAN_TSLOW_BRP_MASK)
+
+struct __packed pucan_timing_slow {
+ __le16 opcode_channel;
+
+ u8 ewl; /* Error Warning limit */
+ u8 sjw_t; /* Sync Jump Width + Triple sampling */
+ u8 tseg2; /* Timing SEGment 2 */
+ u8 tseg1; /* Timing SEGment 1 */
+
+ __le16 brp; /* BaudRate Prescaler */
+};
+
+#define PUCAN_TFAST_BRP_BITS 10
+#define PUCAN_TFAST_TSGEG1_BITS 5
+#define PUCAN_TFAST_TSGEG2_BITS 4
+#define PUCAN_TFAST_SJW_BITS 4
+
+#define PUCAN_TFAST_BRP_MASK ((1 << PUCAN_TFAST_BRP_BITS) - 1)
+#define PUCAN_TFAST_TSEG1_MASK ((1 << PUCAN_TFAST_TSGEG1_BITS) - 1)
+#define PUCAN_TFAST_TSEG2_MASK ((1 << PUCAN_TFAST_TSGEG2_BITS) - 1)
+#define PUCAN_TFAST_SJW_MASK ((1 << PUCAN_TFAST_SJW_BITS) - 1)
+
+/* uCAN TIMING_FAST command fields */
+#define PUCAN_TFAST_SJW(s) ((s) & PUCAN_TFAST_SJW_MASK)
+#define PUCAN_TFAST_TSEG2(t) ((t) & PUCAN_TFAST_TSEG2_MASK)
+#define PUCAN_TFAST_TSEG1(t) ((t) & PUCAN_TFAST_TSEG1_MASK)
+#define PUCAN_TFAST_BRP(b) ((b) & PUCAN_TFAST_BRP_MASK)
+
+struct __packed pucan_timing_fast {
+ __le16 opcode_channel;
+
+ u8 unused;
+ u8 sjw; /* Sync Jump Width */
+ u8 tseg2; /* Timing SEGment 2 */
+ u8 tseg1; /* Timing SEGment 1 */
+
+ __le16 brp; /* BaudRate Prescaler */
+};
+
+/* uCAN FILTER_STD command fields */
+#define PUCAN_FLTSTD_ROW_IDX_BITS 6
+
+struct __packed pucan_filter_std {
+ __le16 opcode_channel;
+
+ __le16 idx;
+ __le32 mask; /* CAN-ID bitmask in idx range */
+};
+
+#define PUCAN_FLTSTD_ROW_IDX_MAX ((1 << PUCAN_FLTSTD_ROW_IDX_BITS) - 1)
+
+/* uCAN SET_STD_FILTER command fields */
+struct __packed pucan_std_filter {
+ __le16 opcode_channel;
+
+ u8 unused;
+ u8 idx;
+ __le32 mask; /* CAN-ID bitmask in idx range */
+};
+
+/* uCAN TX_ABORT commands fields */
+#define PUCAN_TX_ABORT_FLUSH 0x0001
+
+struct __packed pucan_tx_abort {
+ __le16 opcode_channel;
+
+ __le16 flags;
+ u32 unused;
+};
+
+/* uCAN WR_ERR_CNT command fields */
+#define PUCAN_WRERRCNT_TE 0x4000 /* Tx error cntr write Enable */
+#define PUCAN_WRERRCNT_RE 0x8000 /* Rx error cntr write Enable */
+
+struct __packed pucan_wr_err_cnt {
+ __le16 opcode_channel;
+
+ __le16 sel_mask;
+ u8 tx_counter; /* Tx error counter new value */
+ u8 rx_counter; /* Rx error counter new value */
+
+ u16 unused;
+};
+
+/* uCAN SET_EN/CLR_DIS _OPTION command fields */
+#define PUCAN_OPTION_ERROR 0x0001
+#define PUCAN_OPTION_BUSLOAD 0x0002
+#define PUCAN_OPTION_CANDFDISO 0x0004
+
+struct __packed pucan_options {
+ __le16 opcode_channel;
+
+ __le16 options;
+ u32 unused;
+};
+
+/* uCAN received messages global format */
+struct __packed pucan_msg {
+ __le16 size;
+ __le16 type;
+ __le32 ts_low;
+ __le32 ts_high;
+};
+
+/* uCAN flags for CAN/CANFD messages */
+#define PUCAN_MSG_SELF_RECEIVE 0x80
+#define PUCAN_MSG_ERROR_STATE_IND 0x40 /* error state indicator */
+#define PUCAN_MSG_BITRATE_SWITCH 0x20 /* bitrate switch */
+#define PUCAN_MSG_EXT_DATA_LEN 0x10 /* extended data length */
+#define PUCAN_MSG_SINGLE_SHOT 0x08
+#define PUCAN_MSG_LOOPED_BACK 0x04
+#define PUCAN_MSG_EXT_ID 0x02
+#define PUCAN_MSG_RTR 0x01
+
+struct __packed pucan_rx_msg {
+ __le16 size;
+ __le16 type;
+ __le32 ts_low;
+ __le32 ts_high;
+ __le32 tag_low;
+ __le32 tag_high;
+ u8 channel_dlc;
+ u8 client;
+ __le16 flags;
+ __le32 can_id;
+ u8 d[0];
+};
+
+/* uCAN error types */
+#define PUCAN_ERMSG_BIT_ERROR 0
+#define PUCAN_ERMSG_FORM_ERROR 1
+#define PUCAN_ERMSG_STUFF_ERROR 2
+#define PUCAN_ERMSG_OTHER_ERROR 3
+#define PUCAN_ERMSG_ERR_CNT_DEC 4
+
+struct __packed pucan_error_msg {
+ __le16 size;
+ __le16 type;
+ __le32 ts_low;
+ __le32 ts_high;
+ u8 channel_type_d;
+ u8 code_g;
+ u8 tx_err_cnt;
+ u8 rx_err_cnt;
+};
+
+static inline int pucan_error_get_channel(const struct pucan_error_msg *msg)
+{
+ return msg->channel_type_d & 0x0f;
+}
+
+#define PUCAN_RX_BARRIER 0x10
+#define PUCAN_BUS_PASSIVE 0x20
+#define PUCAN_BUS_WARNING 0x40
+#define PUCAN_BUS_BUSOFF 0x80
+
+struct __packed pucan_status_msg {
+ __le16 size;
+ __le16 type;
+ __le32 ts_low;
+ __le32 ts_high;
+ u8 channel_p_w_b;
+ u8 unused[3];
+};
+
+static inline int pucan_status_get_channel(const struct pucan_status_msg *msg)
+{
+ return msg->channel_p_w_b & 0x0f;
+}
+
+static inline int pucan_status_is_rx_barrier(const struct pucan_status_msg *msg)
+{
+ return msg->channel_p_w_b & PUCAN_RX_BARRIER;
+}
+
+static inline int pucan_status_is_passive(const struct pucan_status_msg *msg)
+{
+ return msg->channel_p_w_b & PUCAN_BUS_PASSIVE;
+}
+
+static inline int pucan_status_is_warning(const struct pucan_status_msg *msg)
+{
+ return msg->channel_p_w_b & PUCAN_BUS_WARNING;
+}
+
+static inline int pucan_status_is_busoff(const struct pucan_status_msg *msg)
+{
+ return msg->channel_p_w_b & PUCAN_BUS_BUSOFF;
+}
+
+/* uCAN transmitted message format */
+#define PUCAN_MSG_CHANNEL_DLC(c, d) (((c) & 0xf) | ((d) << 4))
+
+struct __packed pucan_tx_msg {
+ __le16 size;
+ __le16 type;
+ __le32 tag_low;
+ __le32 tag_high;
+ u8 channel_dlc;
+ u8 client;
+ __le16 flags;
+ __le32 can_id;
+ u8 d[0];
+};
+
+/* build the cmd opcode_channel field with respect to the correct endianness */
+static inline __le16 pucan_cmd_opcode_channel(int index, int opcode)
+{
+ return cpu_to_le16(((index) << 12) | ((opcode) & 0x3ff));
+}
+
+/* return the channel number part from any received message channel_dlc field */
+static inline int pucan_msg_get_channel(const struct pucan_rx_msg *msg)
+{
+ return msg->channel_dlc & 0xf;
+}
+
+/* return the dlc value from any received message channel_dlc field */
+static inline int pucan_msg_get_dlc(const struct pucan_rx_msg *msg)
+{
+ return msg->channel_dlc >> 4;
+}
+
+static inline int pucan_ermsg_get_channel(const struct pucan_error_msg *msg)
+{
+ return msg->channel_type_d & 0x0f;
+}
+
+static inline int pucan_stmsg_get_channel(const struct pucan_status_msg *msg)
+{
+ return msg->channel_p_w_b & 0x0f;
+}
+
+#endif
diff --git a/include/linux/can/led.h b/include/linux/can/led.h
new file mode 100644
index 0000000..2746f7c
--- /dev/null
+++ b/include/linux/can/led.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2012, Fabio Baltieri <fabio.baltieri@gmail.com>
+ *
+ * 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.
+ */
+
+#ifndef _CAN_LED_H
+#define _CAN_LED_H
+
+#include <linux/if.h>
+#include <linux/leds.h>
+#include <linux/netdevice.h>
+
+enum can_led_event {
+ CAN_LED_EVENT_OPEN,
+ CAN_LED_EVENT_STOP,
+ CAN_LED_EVENT_TX,
+ CAN_LED_EVENT_RX,
+};
+
+#ifdef CONFIG_CAN_LEDS
+
+/* keep space for interface name + "-tx"/"-rx"/"-rxtx"
+ * suffix and null terminator
+ */
+#define CAN_LED_NAME_SZ (IFNAMSIZ + 6)
+
+void can_led_event(struct net_device *netdev, enum can_led_event event);
+void devm_can_led_init(struct net_device *netdev);
+int __init can_led_notifier_init(void);
+void __exit can_led_notifier_exit(void);
+
+#else
+
+static inline void can_led_event(struct net_device *netdev,
+ enum can_led_event event)
+{
+}
+static inline void devm_can_led_init(struct net_device *netdev)
+{
+}
+static inline int can_led_notifier_init(void)
+{
+ return 0;
+}
+static inline void can_led_notifier_exit(void)
+{
+}
+
+#endif
+
+#endif /* !_CAN_LED_H */
diff --git a/include/linux/can/platform/cc770.h b/include/linux/can/platform/cc770.h
new file mode 100644
index 0000000..9587d68
--- /dev/null
+++ b/include/linux/can/platform/cc770.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _CAN_PLATFORM_CC770_H
+#define _CAN_PLATFORM_CC770_H
+
+/* CPU Interface Register (0x02) */
+#define CPUIF_CEN 0x01 /* Clock Out Enable */
+#define CPUIF_MUX 0x04 /* Multiplex */
+#define CPUIF_SLP 0x08 /* Sleep */
+#define CPUIF_PWD 0x10 /* Power Down Mode */
+#define CPUIF_DMC 0x20 /* Divide Memory Clock */
+#define CPUIF_DSC 0x40 /* Divide System Clock */
+#define CPUIF_RST 0x80 /* Hardware Reset Status */
+
+/* Clock Out Register (0x1f) */
+#define CLKOUT_CD_MASK 0x0f /* Clock Divider mask */
+#define CLKOUT_SL_MASK 0x30 /* Slew Rate mask */
+#define CLKOUT_SL_SHIFT 4
+
+/* Bus Configuration Register (0x2f) */
+#define BUSCFG_DR0 0x01 /* Disconnect RX0 Input / Select RX input */
+#define BUSCFG_DR1 0x02 /* Disconnect RX1 Input / Silent mode */
+#define BUSCFG_DT1 0x08 /* Disconnect TX1 Output */
+#define BUSCFG_POL 0x20 /* Polarity dominant or recessive */
+#define BUSCFG_CBY 0x40 /* Input Comparator Bypass */
+
+struct cc770_platform_data {
+ u32 osc_freq; /* CAN bus oscillator frequency in Hz */
+
+ u8 cir; /* CPU Interface Register */
+ u8 cor; /* Clock Out Register */
+ u8 bcr; /* Bus Configuration Register */
+};
+
+#endif /* !_CAN_PLATFORM_CC770_H */
diff --git a/include/linux/can/platform/mcp251x.h b/include/linux/can/platform/mcp251x.h
new file mode 100644
index 0000000..9e5ac27
--- /dev/null
+++ b/include/linux/can/platform/mcp251x.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _CAN_PLATFORM_MCP251X_H
+#define _CAN_PLATFORM_MCP251X_H
+
+/*
+ *
+ * CAN bus driver for Microchip 251x CAN Controller with SPI Interface
+ *
+ */
+
+#include <linux/spi/spi.h>
+
+/*
+ * struct mcp251x_platform_data - MCP251X SPI CAN controller platform data
+ * @oscillator_frequency: - oscillator frequency in Hz
+ */
+
+struct mcp251x_platform_data {
+ unsigned long oscillator_frequency;
+};
+
+#endif /* !_CAN_PLATFORM_MCP251X_H */
diff --git a/include/linux/can/platform/rcar_can.h b/include/linux/can/platform/rcar_can.h
new file mode 100644
index 0000000..a43dcd0
--- /dev/null
+++ b/include/linux/can/platform/rcar_can.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _CAN_PLATFORM_RCAR_CAN_H_
+#define _CAN_PLATFORM_RCAR_CAN_H_
+
+#include <linux/types.h>
+
+/* Clock Select Register settings */
+enum CLKR {
+ CLKR_CLKP1 = 0, /* Peripheral clock (clkp1) */
+ CLKR_CLKP2 = 1, /* Peripheral clock (clkp2) */
+ CLKR_CLKEXT = 3 /* Externally input clock */
+};
+
+struct rcar_can_platform_data {
+ enum CLKR clock_select; /* Clock source select */
+};
+
+#endif /* !_CAN_PLATFORM_RCAR_CAN_H_ */
diff --git a/include/linux/can/platform/sja1000.h b/include/linux/can/platform/sja1000.h
new file mode 100644
index 0000000..5755ae5
--- /dev/null
+++ b/include/linux/can/platform/sja1000.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _CAN_PLATFORM_SJA1000_H
+#define _CAN_PLATFORM_SJA1000_H
+
+/* clock divider register */
+#define CDR_CLKOUT_MASK 0x07
+#define CDR_CLK_OFF 0x08 /* Clock off (CLKOUT pin) */
+#define CDR_RXINPEN 0x20 /* TX1 output is RX irq output */
+#define CDR_CBP 0x40 /* CAN input comparator bypass */
+#define CDR_PELICAN 0x80 /* PeliCAN mode */
+
+/* output control register */
+#define OCR_MODE_BIPHASE 0x00
+#define OCR_MODE_TEST 0x01
+#define OCR_MODE_NORMAL 0x02
+#define OCR_MODE_CLOCK 0x03
+#define OCR_MODE_MASK 0x07
+#define OCR_TX0_INVERT 0x04
+#define OCR_TX0_PULLDOWN 0x08
+#define OCR_TX0_PULLUP 0x10
+#define OCR_TX0_PUSHPULL 0x18
+#define OCR_TX1_INVERT 0x20
+#define OCR_TX1_PULLDOWN 0x40
+#define OCR_TX1_PULLUP 0x80
+#define OCR_TX1_PUSHPULL 0xc0
+#define OCR_TX_MASK 0xfc
+#define OCR_TX_SHIFT 2
+
+struct sja1000_platform_data {
+ u32 osc_freq; /* CAN bus oscillator frequency in Hz */
+
+ u8 ocr; /* output control register */
+ u8 cdr; /* clock divider register */
+};
+
+#endif /* !_CAN_PLATFORM_SJA1000_H */
diff --git a/include/linux/can/rx-offload.h b/include/linux/can/rx-offload.h
new file mode 100644
index 0000000..8268811
--- /dev/null
+++ b/include/linux/can/rx-offload.h
@@ -0,0 +1,64 @@
+/*
+ * linux/can/rx-offload.h
+ *
+ * Copyright (c) 2014 David Jander, Protonic Holland
+ * Copyright (c) 2014-2017 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the version 2 of the GNU General Public License
+ * 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.
+ */
+
+#ifndef _CAN_RX_OFFLOAD_H
+#define _CAN_RX_OFFLOAD_H
+
+#include <linux/netdevice.h>
+#include <linux/can.h>
+
+struct can_rx_offload {
+ struct net_device *dev;
+
+ unsigned int (*mailbox_read)(struct can_rx_offload *offload, struct can_frame *cf,
+ u32 *timestamp, unsigned int mb);
+
+ struct sk_buff_head skb_queue;
+ u32 skb_queue_len_max;
+
+ unsigned int mb_first;
+ unsigned int mb_last;
+
+ struct napi_struct napi;
+
+ bool inc;
+};
+
+int can_rx_offload_add_timestamp(struct net_device *dev, struct can_rx_offload *offload);
+int can_rx_offload_add_fifo(struct net_device *dev, struct can_rx_offload *offload, unsigned int weight);
+int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload, u64 reg);
+int can_rx_offload_irq_offload_fifo(struct can_rx_offload *offload);
+int can_rx_offload_queue_sorted(struct can_rx_offload *offload,
+ struct sk_buff *skb, u32 timestamp);
+unsigned int can_rx_offload_get_echo_skb(struct can_rx_offload *offload,
+ unsigned int idx, u32 timestamp);
+int can_rx_offload_queue_tail(struct can_rx_offload *offload,
+ struct sk_buff *skb);
+void can_rx_offload_reset(struct can_rx_offload *offload);
+void can_rx_offload_del(struct can_rx_offload *offload);
+void can_rx_offload_enable(struct can_rx_offload *offload);
+
+static inline void can_rx_offload_schedule(struct can_rx_offload *offload)
+{
+ napi_schedule(&offload->napi);
+}
+
+static inline void can_rx_offload_disable(struct can_rx_offload *offload)
+{
+ napi_disable(&offload->napi);
+}
+
+#endif /* !_CAN_RX_OFFLOAD_H */
diff --git a/include/linux/can/skb.h b/include/linux/can/skb.h
new file mode 100644
index 0000000..b3379a9
--- /dev/null
+++ b/include/linux/can/skb.h
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * linux/can/skb.h
+ *
+ * Definitions for the CAN network socket buffer
+ *
+ * Copyright (C) 2012 Oliver Hartkopp <socketcan@hartkopp.net>
+ *
+ */
+
+#ifndef _CAN_SKB_H
+#define _CAN_SKB_H
+
+#include <linux/types.h>
+#include <linux/skbuff.h>
+#include <linux/can.h>
+#include <net/sock.h>
+
+/*
+ * The struct can_skb_priv is used to transport additional information along
+ * with the stored struct can(fd)_frame that can not be contained in existing
+ * struct sk_buff elements.
+ * N.B. that this information must not be modified in cloned CAN sk_buffs.
+ * To modify the CAN frame content or the struct can_skb_priv content
+ * skb_copy() needs to be used instead of skb_clone().
+ */
+
+/**
+ * struct can_skb_priv - private additional data inside CAN sk_buffs
+ * @ifindex: ifindex of the first interface the CAN frame appeared on
+ * @skbcnt: atomic counter to have an unique id together with skb pointer
+ * @cf: align to the following CAN frame at skb->data
+ */
+struct can_skb_priv {
+ int ifindex;
+ int skbcnt;
+ struct can_frame cf[0];
+};
+
+static inline struct can_skb_priv *can_skb_prv(struct sk_buff *skb)
+{
+ return (struct can_skb_priv *)(skb->head);
+}
+
+static inline void can_skb_reserve(struct sk_buff *skb)
+{
+ skb_reserve(skb, sizeof(struct can_skb_priv));
+}
+
+static inline void can_skb_set_owner(struct sk_buff *skb, struct sock *sk)
+{
+ if (sk) {
+ sock_hold(sk);
+ skb->destructor = sock_efree;
+ skb->sk = sk;
+ }
+}
+
+/*
+ * returns an unshared skb owned by the original sock to be echo'ed back
+ */
+static inline struct sk_buff *can_create_echo_skb(struct sk_buff *skb)
+{
+ if (skb_shared(skb)) {
+ struct sk_buff *nskb = skb_clone(skb, GFP_ATOMIC);
+
+ if (likely(nskb)) {
+ can_skb_set_owner(nskb, skb->sk);
+ consume_skb(skb);
+ return nskb;
+ } else {
+ kfree_skb(skb);
+ return NULL;
+ }
+ }
+
+ /* we can assume to have an unshared skb with proper owner */
+ return skb;
+}
+
+#endif /* !_CAN_SKB_H */