drivers: net: Modifications for RMC PegaPCI.

* As submitted by RMC for modem support *

Bug 1054808

Change-Id: Ia25f0d6aaea899cb327cb2141d6896a508238c0c
Signed-off-by: Raj Jayaraman <rjayaraman@nvidia.com>
Reviewed-on: http://git-master/r/160032
(cherry picked from commit a81627cafe577dc5f640feb11596d485200c4c0d)
Reviewed-on: http://git-master/r/162292
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: WK Tsai <wtsai@nvidia.com>
Reviewed-by: Steve Lin <stlin@nvidia.com>

12 files changed, 479 insertions, 1 deletions

diff --git a/include/linux/if_mhi.h b/include/linux/if_mhi.h
new file mode 100644
index 000000000000..98f20f429009
--- /dev/null
+++ b/include/linux/if_mhi.h
@@ -0,0 +1,39 @@
+/*
+ * File: if_mhi.h
+ *
+ * 'Modem-Host Interface' kernel definitions
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+*/
+
+#ifndef LINUX_IF_MHI_H
+#define LINUX_IF_MHI_H
+
+/*
+ * Packet sizes
+ */
+
+#define MHI_MIN_MTU		260
+#define MHI_MAX_MTU		65540
+
+#define MHI_MTU			MHI_MAX_MTU
+
+/*
+ * Ioctl definitions
+ */
+
+
+#endif /* LINUX_IF_MHI_H */
diff --git a/include/linux/l2mux.h b/include/linux/l2mux.h
new file mode 100644
index 000000000000..4f9dab8cf78a
--- /dev/null
+++ b/include/linux/l2mux.h
@@ -0,0 +1,102 @@
+/*
+ * File: l2mux.h
+ *
+ * MHI L2MUX kernel definitions
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef LINUX_L2MUX_H
+#define LINUX_L2MUX_H
+
+#include <linux/types.h>
+#include <linux/socket.h>
+
+#include <net/sock.h>
+
+
+/* Official L3 protocol IDs */
+#define MHI_L3_PHONET		0x00
+#define MHI_L3_FILE		0x01
+#define MHI_L3_AUDIO		0x02
+#define MHI_L3_SECURITY		0x03
+#define MHI_L3_TEST		0x04
+#define MHI_L3_TEST_PRIO	0x05
+#define MHI_L3_XFILE		0x06
+#define MHI_L3_MHDP_DL		0x07
+#define MHI_L3_MHDP_UL		0x08
+#define MHI_L3_AUX_HOST		0x09
+#define MHI_L3_THERMAL		0xC1
+#define MHI_L3_HIGH_PRIO_TEST	0xFD
+#define MHI_L3_MED_PRIO_TEST	0xFE
+#define MHI_L3_LOW_PRIO_TEST	0xFF
+
+/* 256 possible protocols */
+#define MHI_L3_NPROTO		256
+
+/* Special value for ANY */
+#define MHI_L3_ANY		0xFFFF
+
+typedef int (l2mux_skb_fn)(struct sk_buff *skb, struct net_device *dev);
+
+struct l2muxhdr {
+	__u8	l3_len[3];
+	__u8	l3_prot;
+} __packed;
+
+#define L2MUX_HDR_SIZE  (sizeof(struct l2muxhdr))
+
+
+static inline struct l2muxhdr *l2mux_hdr(struct sk_buff *skb)
+{
+	return (struct l2muxhdr *)skb_mac_header(skb);
+}
+
+static inline void l2mux_set_proto(struct l2muxhdr *hdr, int proto)
+{
+	hdr->l3_prot = proto;
+}
+
+static inline int l2mux_get_proto(struct l2muxhdr *hdr)
+{
+	return hdr->l3_prot;
+}
+
+static inline void l2mux_set_length(struct l2muxhdr *hdr, unsigned len)
+{
+	hdr->l3_len[0] = (len) & 0xFF;
+	hdr->l3_len[1] = (len >>  8) & 0xFF;
+	hdr->l3_len[2] = (len >> 16) & 0xFF;
+}
+
+static inline unsigned l2mux_get_length(struct l2muxhdr *hdr)
+{
+	return (((unsigned)hdr->l3_len[2]) << 16) |
+		(((unsigned)hdr->l3_len[1]) << 8) |
+			((unsigned)hdr->l3_len[0]);
+}
+
+extern int l2mux_netif_rx_register(int l3, l2mux_skb_fn *rx_fn);
+extern int l2mux_netif_rx_unregister(int l3);
+
+extern int l2mux_netif_tx_register(int pt, l2mux_skb_fn *rx_fn);
+extern int l2mux_netif_tx_unregister(int pt);
+
+extern int l2mux_skb_rx(struct sk_buff *skb, struct net_device *dev);
+extern int l2mux_skb_tx(struct sk_buff *skb, struct net_device *dev);
+
+
+#endif /* LINUX_L2MUX_H */
diff --git a/include/linux/mhi.h b/include/linux/mhi.h
new file mode 100644
index 000000000000..ba131350ee80
--- /dev/null
+++ b/include/linux/mhi.h
@@ -0,0 +1,55 @@
+/*
+ * file mhi.h
+ *
+ * Modem-Host Interface (MHI) kernel interface
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef LINUX_MHI_H
+#define LINUX_MHI_H
+
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <net/sock.h>
+#include <asm/byteorder.h>
+
+
+struct mhi_sock {
+	struct sock	sk;
+	int		sk_l3proto;
+	int		sk_ifindex;
+};
+
+struct sockaddr_mhi {
+	sa_family_t	sa_family;
+	int		sa_ifindex;
+	__u8		sa_zero[sizeof(struct sockaddr)
+				- sizeof(sa_family_t) - sizeof(int)];
+};
+
+
+static inline struct mhi_sock *mhi_sk(struct sock *sk)
+{
+	return (struct mhi_sock *)sk;
+}
+
+static inline struct sockaddr_mhi *sa_mhi(struct sockaddr *sa)
+{
+	return (struct sockaddr_mhi *)sa;
+}
+
+#endif
diff --git a/include/linux/socket.h b/include/linux/socket.h
index b10ce4b341ea..1bdbcf26cb9e 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -179,7 +179,9 @@ struct ucred {
 #define AF_ALG		38	/* Algorithm sockets		*/
 #define AF_NFC		39	/* NFC sockets			*/
 #define AF_VSOCK	40	/* vSockets			*/
-#define AF_MAX		41	/* For now.. */
+#define AF_MHI          41      /* MHI sockets                  */
+#define AF_RAW          42      /* RAW sockets                  */
+#define AF_MAX		43	/* For now.. */
 
 /* Protocol families, same as address families. */
 #define PF_UNSPEC	AF_UNSPEC
@@ -223,6 +225,8 @@ struct ucred {
 #define PF_ALG		AF_ALG
 #define PF_NFC		AF_NFC
 #define PF_VSOCK	AF_VSOCK
+#define PF_MHI          AF_MHI
+#define PF_RAW          AF_RAW
 #define PF_MAX		AF_MAX
 
 /* Maximum queue length specifiable by listen.  */
diff --git a/include/net/af_mhi.h b/include/net/af_mhi.h
new file mode 100644
index 000000000000..be571b7c28a8
--- /dev/null
+++ b/include/net/af_mhi.h
@@ -0,0 +1,38 @@
+/*
+ * File: net/af_mhi.h
+ *
+ * MHI Protocol Family kernel definitions
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef __LINUX_NET_AFMHI_H
+#define __LINUX_NET_AFMHI_H
+
+#include <linux/types.h>
+#include <linux/socket.h>
+
+#include <net/sock.h>
+
+
+extern int mhi_register_protocol(int protocol);
+extern int mhi_unregister_protocol(int protocol);
+extern int mhi_protocol_registered(int protocol);
+
+extern int mhi_skb_send(struct sk_buff *skb, struct net_device *dev, u8 proto);
+
+
+#endif /* __LINUX_NET_AFMHI_H */
diff --git a/include/net/mhdp.h b/include/net/mhdp.h
new file mode 100644
index 000000000000..1b8558e74ab9
--- /dev/null
+++ b/include/net/mhdp.h
@@ -0,0 +1,43 @@
+/*
+ * File: mhdp.h
+ *
+ * Modem-Host Interface (MHI) - MHDP kernel interface
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef __NET_MHDP_H
+#define __NET_MHDP_H
+
+struct mhdp_tunnel_parm {
+	char name[IFNAMSIZ];
+	int  pdn_id;
+	char master_interface[IFNAMSIZ];
+};
+
+struct mhdp_tunnel {
+	struct mhdp_tunnel	*next;
+	struct net_device	*dev;
+	struct mhdp_tunnel_parm	parms;
+	struct net_device *master_dev;
+	struct sk_buff *skb;
+};
+
+#define SIOCADDPDNID     (SIOCDEVPRIVATE + 1)
+#define SIOCDELPDNID     (SIOCDEVPRIVATE + 2)
+#define SIOCRESETMHDP    (SIOCDEVPRIVATE + 3)
+
+#endif /* __NET_MHDP_H */
diff --git a/include/net/mhi/dgram.h b/include/net/mhi/dgram.h
new file mode 100644
index 000000000000..ceb34d58f5ae
--- /dev/null
+++ b/include/net/mhi/dgram.h
@@ -0,0 +1,41 @@
+/*
+ * File: mhi/dgram.h
+ *
+ * MHI DGRAM socket definitions
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef MHI_DGRAM_H
+#define MHI_DGRAM_H
+
+#include <linux/types.h>
+#include <linux/socket.h>
+
+#include <net/sock.h>
+
+
+extern int mhi_dgram_sock_create(
+	struct net *net,
+	struct socket *sock,
+	int proto,
+	int kern);
+
+extern int  mhi_dgram_proto_init(void);
+extern void mhi_dgram_proto_exit(void);
+
+
+#endif /* MHI_DGRAM_H */
diff --git a/include/net/mhi/mhdp.h b/include/net/mhi/mhdp.h
new file mode 100644
index 000000000000..7ec1591cb8d3
--- /dev/null
+++ b/include/net/mhi/mhdp.h
@@ -0,0 +1,35 @@
+/*
+ * File: mhdp.h
+ *
+ * Modem-Host Interface (MHI) - MHDP kernel interface
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef __NET_MHI_MHDP_H
+#define __NET_MHI_MHDP_H
+
+struct mhdp_tunnel_parm {
+	char name[IFNAMSIZ];
+	char master[IFNAMSIZ];
+	int  pdn_id;
+};
+
+#define SIOCADDPDNID     (SIOCDEVPRIVATE + 1)
+#define SIOCDELPDNID     (SIOCDEVPRIVATE + 2)
+#define SIOCRESETMHDP    (SIOCDEVPRIVATE + 3)
+
+#endif /* __NET_MHI_MHDP_H */
diff --git a/include/net/mhi/raw.h b/include/net/mhi/raw.h
new file mode 100644
index 000000000000..7c2edba4f111
--- /dev/null
+++ b/include/net/mhi/raw.h
@@ -0,0 +1,41 @@
+/*
+ * File: mhi/raw.h
+ *
+ * MHI RAW socket definitions
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef MHI_RAW_H
+#define MHI_RAW_H
+
+#include <linux/types.h>
+#include <linux/socket.h>
+
+#include <net/sock.h>
+
+
+extern int mhi_raw_sock_create(
+	struct net *net,
+	struct socket *sock,
+	int proto,
+	int kern);
+
+extern int  mhi_raw_proto_init(void);
+extern void mhi_raw_proto_exit(void);
+
+
+#endif /* MHI_RAW_H */
diff --git a/include/net/mhi/sched.h b/include/net/mhi/sched.h
new file mode 100644
index 000000000000..8ff4b420c70a
--- /dev/null
+++ b/include/net/mhi/sched.h
@@ -0,0 +1,35 @@
+/*
+ * File: mhi/sock.h
+ *
+ * MHI socket definitions
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef MHI_SCHED_H
+#define MHI_SCHED_H
+
+#define MHI_NOTIFY_QUEUE_LOW     19
+#define MHI_NOTIFY_QUEUE_HIGH    20
+
+extern int mhi_register_queue_notifier(struct Qdisc *sch,
+			struct notifier_block *nb, unsigned long cl);
+
+extern int mhi_unregister_queue_notifier(struct Qdisc *sch,
+			struct notifier_block *nb, unsigned long cl);
+
+
+#endif /* MHI_SCHED_H */
diff --git a/include/net/mhi/sock.h b/include/net/mhi/sock.h
new file mode 100644
index 000000000000..170c892ec171
--- /dev/null
+++ b/include/net/mhi/sock.h
@@ -0,0 +1,42 @@
+/*
+ * File: mhi/sock.h
+ *
+ * MHI socket definitions
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef MHI_SOCK_H
+#define MHI_SOCK_H
+
+#include <linux/types.h>
+#include <linux/socket.h>
+
+#include <net/sock.h>
+
+extern const struct proto_ops mhi_socket_ops;
+
+extern int  mhi_sock_rcv_unicast(struct sk_buff *skb, u8 l3prot, u32 l3len);
+extern int  mhi_sock_rcv_multicast(struct sk_buff *skb, u8 l3prot, u32 l3len);
+
+extern void mhi_sock_hash(struct sock *sk);
+extern void mhi_sock_unhash(struct sock *sk);
+
+extern int  mhi_sock_init(void);
+extern void mhi_sock_exit(void);
+
+
+#endif /* MHI_SOCK_H */
diff --git a/include/uapi/linux/if_ether.h b/include/uapi/linux/if_ether.h
index ade07f1c491a..c7e57ee54e97 100644
--- a/include/uapi/linux/if_ether.h
+++ b/include/uapi/linux/if_ether.h
@@ -125,6 +125,9 @@
 #define ETH_P_PHONET	0x00F5		/* Nokia Phonet frames          */
 #define ETH_P_IEEE802154 0x00F6		/* IEEE802.15.4 frame		*/
 #define ETH_P_CAIF	0x00F7		/* ST-Ericsson CAIF protocol	*/
+#define ETH_P_MHI	0x00F8		/* Renesas MHI protocol         */
+#define ETH_P_RAW	0x00F9		/* RAW access to frames         */
+#define ETH_P_MHDP	0x00FA		/* MHDP data frames             */
 
 /*
  *	This is an Ethernet frame header.