Initial Contribution
msm-2.6.38: tag AU_LINUX_ANDROID_GINGERBREAD.02.03.04.00.142
Signed-off-by: Bryan Huntsman <bryanh@codeaurora.org>
diff --git a/arch/arm/mach-msm/smd_rpcrouter.h b/arch/arm/mach-msm/smd_rpcrouter.h
new file mode 100644
index 0000000..1da7579
--- /dev/null
+++ b/arch/arm/mach-msm/smd_rpcrouter.h
@@ -0,0 +1,266 @@
+/** arch/arm/mach-msm/smd_rpcrouter.h
+ *
+ * Copyright (C) 2007 Google, Inc.
+ * Copyright (c) 2007-2011, Code Aurora Forum. All rights reserved.
+ * Author: San Mehat <san@android.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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 _ARCH_ARM_MACH_MSM_SMD_RPCROUTER_H
+#define _ARCH_ARM_MACH_MSM_SMD_RPCROUTER_H
+
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/cdev.h>
+#include <linux/platform_device.h>
+#include <linux/msm_rpcrouter.h>
+#include <linux/wakelock.h>
+
+#include <mach/msm_smd.h>
+#include <mach/msm_rpcrouter.h>
+
+/* definitions for the R2R wire protcol */
+
+#define RPCROUTER_VERSION 1
+#define RPCROUTER_PROCESSORS_MAX 4
+#define RPCROUTER_MSGSIZE_MAX 512
+#define RPCROUTER_PEND_REPLIES_MAX 32
+
+#define RPCROUTER_CLIENT_BCAST_ID 0xffffffff
+#define RPCROUTER_ROUTER_ADDRESS 0xfffffffe
+
+#define RPCROUTER_PID_LOCAL 1
+
+#define RPCROUTER_CTRL_CMD_DATA 1
+#define RPCROUTER_CTRL_CMD_HELLO 2
+#define RPCROUTER_CTRL_CMD_BYE 3
+#define RPCROUTER_CTRL_CMD_NEW_SERVER 4
+#define RPCROUTER_CTRL_CMD_REMOVE_SERVER 5
+#define RPCROUTER_CTRL_CMD_REMOVE_CLIENT 6
+#define RPCROUTER_CTRL_CMD_RESUME_TX 7
+#define RPCROUTER_CTRL_CMD_EXIT 8
+#define RPCROUTER_CTRL_CMD_PING 9
+
+#define RPCROUTER_DEFAULT_RX_QUOTA 5
+
+#define RPCROUTER_XPRT_EVENT_DATA 1
+#define RPCROUTER_XPRT_EVENT_OPEN 2
+#define RPCROUTER_XPRT_EVENT_CLOSE 3
+
+/* Restart states for endpoint.
+ *
+ * Two different bits are specified here, one for
+ * the remote server notification (RESTART_PEND_SVR)
+ * and one for client notification (RESTART_PEND_NTFY).
+ * The client notification is used to ensure that
+ * the client gets notified by an ENETRESET return
+ * code at least once, even if they miss the actual
+ * reset event. The server notification is used to
+ * properly handle the reset state of the endpoint.
+ */
+#define RESTART_NORMAL 0x0
+#define RESTART_PEND_SVR 0x1
+#define RESTART_PEND_NTFY 0x2
+#define RESTART_PEND_NTFY_SVR (RESTART_PEND_SVR | RESTART_PEND_NTFY)
+
+union rr_control_msg {
+ uint32_t cmd;
+ struct {
+ uint32_t cmd;
+ uint32_t prog;
+ uint32_t vers;
+ uint32_t pid;
+ uint32_t cid;
+ } srv;
+ struct {
+ uint32_t cmd;
+ uint32_t pid;
+ uint32_t cid;
+ } cli;
+};
+
+struct rr_header {
+ uint32_t version;
+ uint32_t type;
+ uint32_t src_pid;
+ uint32_t src_cid;
+ uint32_t confirm_rx;
+ uint32_t size;
+ uint32_t dst_pid;
+ uint32_t dst_cid;
+};
+
+/* internals */
+
+#define RPCROUTER_MAX_REMOTE_SERVERS 100
+
+struct rr_fragment {
+ unsigned char data[RPCROUTER_MSGSIZE_MAX];
+ uint32_t length;
+ struct rr_fragment *next;
+};
+
+struct rr_packet {
+ struct list_head list;
+ struct rr_fragment *first;
+ struct rr_fragment *last;
+ struct rr_header hdr;
+ uint32_t mid;
+ uint32_t length;
+};
+
+#define PACMARK_LAST(n) ((n) & 0x80000000)
+#define PACMARK_MID(n) (((n) >> 16) & 0xFF)
+#define PACMARK_LEN(n) ((n) & 0xFFFF)
+
+static inline uint32_t PACMARK(uint32_t len, uint32_t mid, uint32_t first,
+ uint32_t last)
+{
+ return (len & 0xFFFF) |
+ ((mid & 0xFF) << 16) |
+ ((!!first) << 30) |
+ ((!!last) << 31);
+}
+
+struct rr_server {
+ struct list_head list;
+
+ uint32_t pid;
+ uint32_t cid;
+ uint32_t prog;
+ uint32_t vers;
+
+ dev_t device_number;
+ struct cdev cdev;
+ struct device *device;
+ struct rpcsvr_platform_device p_device;
+ char pdev_name[32];
+};
+
+struct rr_remote_endpoint {
+ uint32_t pid;
+ uint32_t cid;
+
+ int tx_quota_cntr;
+ int quota_restart_state;
+ spinlock_t quota_lock;
+ wait_queue_head_t quota_wait;
+
+ struct list_head list;
+};
+
+struct msm_rpc_reply {
+ struct list_head list;
+ uint32_t pid;
+ uint32_t cid;
+ uint32_t prog; /* be32 */
+ uint32_t vers; /* be32 */
+ uint32_t xid; /* be32 */
+};
+
+struct msm_rpc_endpoint {
+ struct list_head list;
+
+ /* incomplete packets waiting for assembly */
+ struct list_head incomplete;
+ spinlock_t incomplete_lock;
+
+ /* complete packets waiting to be read */
+ struct list_head read_q;
+ spinlock_t read_q_lock;
+ struct wake_lock read_q_wake_lock;
+ wait_queue_head_t wait_q;
+ unsigned flags;
+ uint32_t forced_wakeup;
+
+ /* restart handling */
+ int restart_state;
+ spinlock_t restart_lock;
+ wait_queue_head_t restart_wait;
+
+ /* modem restart notifications */
+ int do_setup_notif;
+ void *client_data;
+ void (*cb_restart_teardown)(void *client_data);
+ void (*cb_restart_setup)(void *client_data);
+
+ /* endpoint address */
+ uint32_t pid;
+ uint32_t cid;
+
+ /* bound remote address
+ * if not connected (dst_pid == 0xffffffff) RPC_CALL writes fail
+ * RPC_CALLs must be to the prog/vers below or they will fail
+ */
+ uint32_t dst_pid;
+ uint32_t dst_cid;
+ uint32_t dst_prog; /* be32 */
+ uint32_t dst_vers; /* be32 */
+
+ /* reply queue for inbound messages */
+ struct list_head reply_pend_q;
+ struct list_head reply_avail_q;
+ spinlock_t reply_q_lock;
+ uint32_t reply_cnt;
+ struct wake_lock reply_q_wake_lock;
+
+ /* device node if this endpoint is accessed via userspace */
+ dev_t dev;
+};
+
+enum write_data_type {
+ HEADER = 1,
+ PACKMARK,
+ PAYLOAD,
+};
+
+struct rpcrouter_xprt {
+ char *name;
+ void *priv;
+
+ int (*read_avail)(void);
+ int (*read)(void *data, uint32_t len);
+ int (*write_avail)(void);
+ int (*write)(void *data, uint32_t len, enum write_data_type type);
+ int (*close)(void);
+};
+
+/* shared between smd_rpcrouter*.c */
+void msm_rpcrouter_xprt_notify(struct rpcrouter_xprt *xprt, unsigned event);
+int __msm_rpc_read(struct msm_rpc_endpoint *ept,
+ struct rr_fragment **frag,
+ unsigned len, long timeout);
+
+int msm_rpcrouter_close(void);
+struct msm_rpc_endpoint *msm_rpcrouter_create_local_endpoint(dev_t dev);
+int msm_rpcrouter_destroy_local_endpoint(struct msm_rpc_endpoint *ept);
+
+int msm_rpcrouter_create_server_cdev(struct rr_server *server);
+int msm_rpcrouter_create_server_pdev(struct rr_server *server);
+
+int msm_rpcrouter_init_devices(void);
+void msm_rpcrouter_exit_devices(void);
+
+void get_requesting_client(struct msm_rpc_endpoint *ept, uint32_t xid,
+ struct msm_rpc_client_info *clnt_info);
+
+extern dev_t msm_rpcrouter_devno;
+extern struct completion rpc_remote_router_up;
+extern struct class *msm_rpcrouter_class;
+
+void xdr_init(struct msm_rpc_xdr *xdr);
+void xdr_init_input(struct msm_rpc_xdr *xdr, void *buf, uint32_t size);
+void xdr_init_output(struct msm_rpc_xdr *xdr, void *buf, uint32_t size);
+void xdr_clean_input(struct msm_rpc_xdr *xdr);
+void xdr_clean_output(struct msm_rpc_xdr *xdr);
+uint32_t xdr_read_avail(struct msm_rpc_xdr *xdr);
+#endif