/arch/arm/mach-fsm/oem_rapi_client.c
https://bitbucket.org/sammyz/iscream_thunderc-2.6.35-rebase · C · 359 lines · 271 code · 63 blank · 25 comment · 36 complexity · 31b869674460faf7cf8fffb00f8795db MD5 · raw file
- /* Copyright (c) 2009-2010, Code Aurora Forum. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only 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 Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- */
- /*
- * OEM RAPI CLIENT Driver source file
- */
- #include <linux/kernel.h>
- #include <linux/err.h>
- #include <linux/fs.h>
- #include <linux/sched.h>
- #include <linux/debugfs.h>
- #include <linux/uaccess.h>
- #include <linux/delay.h>
- #include <mach/msm_rpcrouter.h>
- #include <mach/oem_rapi_client.h>
- #define OEM_RAPI_PROG 0x3000006B
- #define OEM_RAPI_VERS 0x00010001
- #define OEM_RAPI_NULL_PROC 0
- #define OEM_RAPI_RPC_GLUE_CODE_INFO_REMOTE_PROC 1
- #define OEM_RAPI_STREAMING_FUNCTION_PROC 2
- #define OEM_RAPI_CLIENT_MAX_OUT_BUFF_SIZE 128
- static struct msm_rpc_client *rpc_client;
- static uint32_t open_count;
- static DEFINE_MUTEX(oem_rapi_client_lock);
- /* TODO: check where to allocate memory for return */
- static int oem_rapi_client_cb(struct msm_rpc_client *client,
- struct rpc_request_hdr *req,
- struct msm_rpc_xdr *xdr)
- {
- uint32_t cb_id, accept_status;
- int rc;
- void *cb_func;
- uint32_t temp;
- struct oem_rapi_client_streaming_func_cb_arg arg;
- struct oem_rapi_client_streaming_func_cb_ret ret;
- arg.input = NULL;
- ret.out_len = NULL;
- ret.output = NULL;
- xdr_recv_uint32(xdr, &cb_id); /* cb_id */
- xdr_recv_uint32(xdr, &arg.event); /* enum */
- xdr_recv_uint32(xdr, (uint32_t *)(&arg.handle)); /* handle */
- xdr_recv_uint32(xdr, &arg.in_len); /* in_len */
- xdr_recv_bytes(xdr, (void **)&arg.input, &temp); /* input */
- xdr_recv_uint32(xdr, &arg.out_len_valid); /* out_len */
- if (arg.out_len_valid) {
- ret.out_len = kmalloc(sizeof(*ret.out_len), GFP_KERNEL);
- if (!ret.out_len) {
- accept_status = RPC_ACCEPTSTAT_SYSTEM_ERR;
- goto oem_rapi_send_ack;
- }
- }
- xdr_recv_uint32(xdr, &arg.output_valid); /* out */
- if (arg.output_valid) {
- xdr_recv_uint32(xdr, &arg.output_size); /* ouput_size */
- ret.output = kmalloc(arg.output_size, GFP_KERNEL);
- if (!ret.output) {
- accept_status = RPC_ACCEPTSTAT_SYSTEM_ERR;
- goto oem_rapi_send_ack;
- }
- }
- cb_func = msm_rpc_get_cb_func(client, cb_id);
- if (cb_func) {
- rc = ((int (*)(struct oem_rapi_client_streaming_func_cb_arg *,
- struct oem_rapi_client_streaming_func_cb_ret *))
- cb_func)(&arg, &ret);
- if (rc)
- accept_status = RPC_ACCEPTSTAT_SYSTEM_ERR;
- else
- accept_status = RPC_ACCEPTSTAT_SUCCESS;
- } else
- accept_status = RPC_ACCEPTSTAT_SYSTEM_ERR;
- oem_rapi_send_ack:
- xdr_start_accepted_reply(xdr, accept_status);
- if (accept_status == RPC_ACCEPTSTAT_SUCCESS) {
- uint32_t temp = sizeof(uint32_t);
- xdr_send_pointer(xdr, (void **)&(ret.out_len), temp,
- xdr_send_uint32);
- /* output */
- if (ret.output && ret.out_len)
- xdr_send_bytes(xdr, (const void **)&ret.output,
- ret.out_len);
- else {
- temp = 0;
- xdr_send_uint32(xdr, &temp);
- }
- }
- rc = xdr_send_msg(xdr);
- if (rc)
- pr_err("%s: sending reply failed: %d\n", __func__, rc);
- kfree(arg.input);
- kfree(ret.out_len);
- kfree(ret.output);
- return 0;
- }
- static int oem_rapi_client_streaming_function_arg(struct msm_rpc_client *client,
- struct msm_rpc_xdr *xdr,
- void *data)
- {
- int cb_id;
- struct oem_rapi_client_streaming_func_arg *arg = data;
- cb_id = msm_rpc_add_cb_func(client, (void *)arg->cb_func);
- if ((cb_id < 0) && (cb_id != MSM_RPC_CLIENT_NULL_CB_ID))
- return cb_id;
- xdr_send_uint32(xdr, &arg->event); /* enum */
- xdr_send_uint32(xdr, &cb_id); /* cb_id */
- xdr_send_uint32(xdr, (uint32_t *)(&arg->handle)); /* handle */
- xdr_send_uint32(xdr, &arg->in_len); /* in_len */
- xdr_send_bytes(xdr, (const void **)&arg->input,
- &arg->in_len); /* input */
- xdr_send_uint32(xdr, &arg->out_len_valid); /* out_len */
- xdr_send_uint32(xdr, &arg->output_valid); /* output */
- /* output_size */
- if (arg->output_valid)
- xdr_send_uint32(xdr, &arg->output_size);
- return 0;
- }
- static int oem_rapi_client_streaming_function_ret(struct msm_rpc_client *client,
- struct msm_rpc_xdr *xdr,
- void *data)
- {
- struct oem_rapi_client_streaming_func_ret *ret = data;
- uint32_t temp;
- /* out_len */
- xdr_recv_pointer(xdr, (void **)&(ret->out_len), sizeof(uint32_t),
- xdr_recv_uint32);
- /* output */
- if (ret->out_len && *ret->out_len)
- xdr_recv_bytes(xdr, (void **)&ret->output, &temp);
- return 0;
- }
- int oem_rapi_client_streaming_function(
- struct msm_rpc_client *client,
- struct oem_rapi_client_streaming_func_arg *arg,
- struct oem_rapi_client_streaming_func_ret *ret)
- {
- return msm_rpc_client_req2(client,
- OEM_RAPI_STREAMING_FUNCTION_PROC,
- oem_rapi_client_streaming_function_arg, arg,
- oem_rapi_client_streaming_function_ret,
- ret, -1);
- }
- EXPORT_SYMBOL(oem_rapi_client_streaming_function);
- int oem_rapi_client_close(void)
- {
- mutex_lock(&oem_rapi_client_lock);
- if (--open_count == 0) {
- msm_rpc_unregister_client(rpc_client);
- pr_info("%s: disconnected from remote oem rapi server\n",
- __func__);
- }
- mutex_unlock(&oem_rapi_client_lock);
- return 0;
- }
- EXPORT_SYMBOL(oem_rapi_client_close);
- struct msm_rpc_client *oem_rapi_client_init(void)
- {
- mutex_lock(&oem_rapi_client_lock);
- if (open_count == 0) {
- rpc_client = msm_rpc_register_client2("oemrapiclient",
- OEM_RAPI_PROG,
- OEM_RAPI_VERS, 0,
- oem_rapi_client_cb);
- if (!IS_ERR(rpc_client))
- open_count++;
- }
- mutex_unlock(&oem_rapi_client_lock);
- return rpc_client;
- }
- EXPORT_SYMBOL(oem_rapi_client_init);
- #if defined(CONFIG_DEBUG_FS)
- static struct dentry *dent;
- static int oem_rapi_client_test_res;
- static int oem_rapi_client_null(struct msm_rpc_client *client,
- void *arg, void *ret)
- {
- return msm_rpc_client_req2(client, OEM_RAPI_NULL_PROC,
- NULL, NULL, NULL, NULL, -1);
- }
- static int oem_rapi_client_test_streaming_cb_func(
- struct oem_rapi_client_streaming_func_cb_arg *arg,
- struct oem_rapi_client_streaming_func_cb_ret *ret)
- {
- uint32_t size;
- size = (arg->in_len < OEM_RAPI_CLIENT_MAX_OUT_BUFF_SIZE) ?
- arg->in_len : OEM_RAPI_CLIENT_MAX_OUT_BUFF_SIZE;
- if (ret->out_len != 0)
- *ret->out_len = size;
- if (ret->output != 0)
- memcpy(ret->output, arg->input, size);
- return 0;
- }
- static ssize_t debug_read(struct file *fp, char __user *buf,
- size_t count, loff_t *pos)
- {
- char _buf[16];
- snprintf(_buf, sizeof(_buf), "%i\n", oem_rapi_client_test_res);
- return simple_read_from_buffer(buf, count, pos, _buf, strlen(_buf));
- }
- static ssize_t debug_write(struct file *fp, const char __user *buf,
- size_t count, loff_t *pos)
- {
- char input[OEM_RAPI_CLIENT_MAX_OUT_BUFF_SIZE];
- struct oem_rapi_client_streaming_func_arg arg;
- struct oem_rapi_client_streaming_func_ret ret;
- unsigned char cmd[64];
- int len;
- if (count < 1)
- return 0;
- len = count > 63 ? 63 : count;
- if (copy_from_user(cmd, buf, len))
- return -EFAULT;
- cmd[len] = 0;
- if (cmd[len-1] == '\n') {
- cmd[len-1] = 0;
- len--;
- }
- if (!strncmp(cmd, "null", 64)) {
- oem_rapi_client_test_res = oem_rapi_client_null(rpc_client,
- NULL, NULL);
- } else if (!strncmp(cmd, "streaming_func", 64)) {
- memset(input, 5, 16);
- arg.event = 0;
- arg.cb_func = oem_rapi_client_test_streaming_cb_func;
- arg.handle = (void *)20;
- arg.in_len = 16;
- arg.input = input;
- arg.out_len_valid = 1;
- arg.output_valid = 1;
- arg.output_size = OEM_RAPI_CLIENT_MAX_OUT_BUFF_SIZE;
- ret.out_len = NULL;
- ret.output = NULL;
- oem_rapi_client_test_res = oem_rapi_client_streaming_function(
- rpc_client, &arg, &ret);
- kfree(ret.out_len);
- kfree(ret.output);
- } else
- oem_rapi_client_test_res = -EINVAL;
- if (oem_rapi_client_test_res)
- pr_err("oem rapi client test fail %d\n",
- oem_rapi_client_test_res);
- else
- pr_info("oem rapi client test passed\n");
- return count;
- }
- static int debug_release(struct inode *ip, struct file *fp)
- {
- return oem_rapi_client_close();
- }
- static int debug_open(struct inode *ip, struct file *fp)
- {
- struct msm_rpc_client *client;
- client = oem_rapi_client_init();
- if (IS_ERR(client)) {
- pr_err("%s: couldn't open oem rapi client\n", __func__);
- return PTR_ERR(client);
- } else
- pr_info("%s: connected to remote oem rapi server\n", __func__);
- return 0;
- }
- static const struct file_operations debug_ops = {
- .owner = THIS_MODULE,
- .open = debug_open,
- .release = debug_release,
- .read = debug_read,
- .write = debug_write,
- };
- static void __exit oem_rapi_client_mod_exit(void)
- {
- debugfs_remove(dent);
- }
- static int __init oem_rapi_client_mod_init(void)
- {
- dent = debugfs_create_file("oem_rapi", 0444, 0, NULL, &debug_ops);
- open_count = 0;
- oem_rapi_client_test_res = -1;
- return 0;
- }
- module_init(oem_rapi_client_mod_init);
- module_exit(oem_rapi_client_mod_exit);
- #endif
- MODULE_DESCRIPTION("OEM RAPI CLIENT Driver");
- MODULE_LICENSE("GPL v2");