473 lines
12 KiB
C
473 lines
12 KiB
C
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/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of Code Aurora Forum, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Alternatively, and instead of the terms immediately above, this
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* software may be relicensed by the recipient at their option under the
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* terms of the GNU General Public License version 2 ("GPL") and only
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* version 2. If the recipient chooses to relicense the software under
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* the GPL, then the recipient shall replace all of the text immediately
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* above and including this paragraph with the text immediately below
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* and between the words START OF ALTERNATE GPL TERMS and END OF
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* ALTERNATE GPL TERMS and such notices and license terms shall apply
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* INSTEAD OF the notices and licensing terms given above.
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*
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* START OF ALTERNATE GPL TERMS
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*
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* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
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*
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* This software was originally licensed under the Code Aurora Forum
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* Inc. Dual BSD/GPL License version 1.1 and relicensed as permitted
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* under the terms thereof by a recipient under the General Public
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* License Version 2.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* END OF ALTERNATE GPL TERMS
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*
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*/
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/*
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* SMD RPCROUTER XDR module.
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*/
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#include <linux/types.h>
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#include <linux/string.h>
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <mach/msm_rpcrouter.h>
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int xdr_send_uint32(struct msm_rpc_xdr *xdr, const uint32_t *value)
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{
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if ((xdr->out_index + sizeof(uint32_t)) > xdr->out_size) {
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pr_err("%s: xdr out buffer full\n", __func__);
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return -1;
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}
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*(uint32_t *)(xdr->out_buf + xdr->out_index) = cpu_to_be32(*value);
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xdr->out_index += sizeof(uint32_t);
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return 0;
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}
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int xdr_send_int8(struct msm_rpc_xdr *xdr, const int8_t *value)
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{
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return xdr_send_uint32(xdr, (uint32_t *)value);
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}
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int xdr_send_uint8(struct msm_rpc_xdr *xdr, const uint8_t *value)
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{
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return xdr_send_uint32(xdr, (uint32_t *)value);
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}
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int xdr_send_int16(struct msm_rpc_xdr *xdr, const int16_t *value)
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{
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return xdr_send_uint32(xdr, (uint32_t *)value);
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}
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int xdr_send_uint16(struct msm_rpc_xdr *xdr, const uint16_t *value)
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{
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return xdr_send_uint32(xdr, (uint32_t *)value);
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}
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int xdr_send_int32(struct msm_rpc_xdr *xdr, const int32_t *value)
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{
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return xdr_send_uint32(xdr, (uint32_t *)value);
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}
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int xdr_send_bytes(struct msm_rpc_xdr *xdr, const void **data,
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uint32_t *size)
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{
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void *buf = xdr->out_buf + xdr->out_index;
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uint32_t temp;
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if (!size || !data || !*data)
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return -1;
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temp = *size;
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if (temp & 0x3)
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temp += 4 - (temp & 0x3);
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temp += sizeof(uint32_t);
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if ((xdr->out_index + temp) > xdr->out_size) {
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pr_err("%s: xdr out buffer full\n", __func__);
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return -1;
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}
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*((uint32_t *)buf) = cpu_to_be32(*size);
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buf += sizeof(uint32_t);
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memcpy(buf, *data, *size);
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buf += *size;
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if (*size & 0x3) {
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memset(buf, 0, 4 - (*size & 0x3));
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buf += 4 - (*size & 0x3);
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}
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xdr->out_index = buf - xdr->out_buf;
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return 0;
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}
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int xdr_recv_uint32(struct msm_rpc_xdr *xdr, uint32_t *value)
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{
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if ((xdr->in_index + sizeof(uint32_t)) > xdr->in_size) {
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pr_err("%s: xdr in buffer full\n", __func__);
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return -1;
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}
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*value = be32_to_cpu(*(uint32_t *)(xdr->in_buf + xdr->in_index));
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xdr->in_index += sizeof(uint32_t);
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return 0;
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}
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int xdr_recv_int8(struct msm_rpc_xdr *xdr, int8_t *value)
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{
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return xdr_recv_uint32(xdr, (uint32_t *)value);
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}
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int xdr_recv_uint8(struct msm_rpc_xdr *xdr, uint8_t *value)
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{
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return xdr_recv_uint32(xdr, (uint32_t *)value);
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}
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int xdr_recv_int16(struct msm_rpc_xdr *xdr, int16_t *value)
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{
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return xdr_recv_uint32(xdr, (uint32_t *)value);
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}
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int xdr_recv_uint16(struct msm_rpc_xdr *xdr, uint16_t *value)
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{
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return xdr_recv_uint32(xdr, (uint32_t *)value);
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}
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int xdr_recv_int32(struct msm_rpc_xdr *xdr, int32_t *value)
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{
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return xdr_recv_uint32(xdr, (uint32_t *)value);
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}
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int xdr_recv_bytes(struct msm_rpc_xdr *xdr, void **data,
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uint32_t *size)
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{
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void *buf = xdr->in_buf + xdr->in_index;
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uint32_t temp;
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if (!size || !data)
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return -1;
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*size = be32_to_cpu(*(uint32_t *)buf);
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buf += sizeof(uint32_t);
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temp = *size;
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if (temp & 0x3)
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temp += 4 - (temp & 0x3);
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temp += sizeof(uint32_t);
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if ((xdr->in_index + temp) > xdr->in_size) {
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pr_err("%s: xdr in buffer full\n", __func__);
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return -1;
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}
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if (*size) {
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*data = kmalloc(*size, GFP_KERNEL);
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if (!*data)
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return -1;
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memcpy(*data, buf, *size);
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buf += *size;
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if (*size & 0x3)
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buf += 4 - (*size & 0x3);
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} else
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*data = NULL;
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xdr->in_index = buf - xdr->in_buf;
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return 0;
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}
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int xdr_send_pointer(struct msm_rpc_xdr *xdr, void **obj,
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uint32_t obj_size, void *xdr_op)
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{
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uint32_t ptr_valid, rc;
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ptr_valid = (*obj != NULL);
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rc = xdr_send_uint32(xdr, &ptr_valid);
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if (rc)
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return rc;
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if (!ptr_valid)
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return 0;
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return ((int (*) (struct msm_rpc_xdr *, void *))xdr_op)(xdr, *obj);
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}
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int xdr_recv_pointer(struct msm_rpc_xdr *xdr, void **obj,
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uint32_t obj_size, void *xdr_op)
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{
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uint32_t rc, ptr_valid = 0;
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rc = xdr_recv_uint32(xdr, &ptr_valid);
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if (rc)
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return rc;
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if (!ptr_valid) {
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*obj = NULL;
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return 0;
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}
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*obj = kmalloc(obj_size, GFP_KERNEL);
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if (!*obj)
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return -1;
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rc = ((int (*) (struct msm_rpc_xdr *, void *))xdr_op)(xdr, *obj);
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if (rc)
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kfree(*obj);
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return rc;
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}
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int xdr_send_array(struct msm_rpc_xdr *xdr, void **addr, uint32_t *size,
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uint32_t maxsize, uint32_t elm_size, void *xdr_op)
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{
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int i, rc;
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void *tmp_addr = *addr;
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if (!size || !tmp_addr || (*size > maxsize) || !xdr_op)
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return -1;
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rc = xdr_send_uint32(xdr, size);
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if (rc)
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return rc;
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for (i = 0; i < *size; i++) {
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rc = ((int (*) (struct msm_rpc_xdr *, void *))xdr_op)
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(xdr, tmp_addr);
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if (rc)
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return rc;
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tmp_addr += elm_size;
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}
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return 0;
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}
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int xdr_recv_array(struct msm_rpc_xdr *xdr, void **addr, uint32_t *size,
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uint32_t maxsize, uint32_t elm_size, void *xdr_op)
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{
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int i, rc;
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void *tmp_addr;
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if (!size || !xdr_op)
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return -1;
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rc = xdr_recv_uint32(xdr, size);
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if (rc)
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return rc;
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if (*size > maxsize)
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return -1;
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tmp_addr = kmalloc((*size * elm_size), GFP_KERNEL);
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if (!tmp_addr)
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return -1;
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*addr = tmp_addr;
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for (i = 0; i < *size; i++) {
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rc = ((int (*) (struct msm_rpc_xdr *, void *))xdr_op)
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(xdr, tmp_addr);
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if (rc) {
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kfree(*addr);
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*addr = NULL;
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return rc;
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}
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tmp_addr += elm_size;
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}
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return 0;
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}
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int xdr_recv_req(struct msm_rpc_xdr *xdr, struct rpc_request_hdr *req)
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{
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int rc = 0;
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if (!req)
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return -1;
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rc |= xdr_recv_uint32(xdr, &req->xid); /* xid */
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rc |= xdr_recv_uint32(xdr, &req->type); /* type */
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rc |= xdr_recv_uint32(xdr, &req->rpc_vers); /* rpc_vers */
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rc |= xdr_recv_uint32(xdr, &req->prog); /* prog */
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rc |= xdr_recv_uint32(xdr, &req->vers); /* vers */
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rc |= xdr_recv_uint32(xdr, &req->procedure); /* procedure */
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rc |= xdr_recv_uint32(xdr, &req->cred_flavor); /* cred_flavor */
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rc |= xdr_recv_uint32(xdr, &req->cred_length); /* cred_length */
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rc |= xdr_recv_uint32(xdr, &req->verf_flavor); /* verf_flavor */
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rc |= xdr_recv_uint32(xdr, &req->verf_length); /* verf_length */
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return rc;
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}
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int xdr_recv_reply(struct msm_rpc_xdr *xdr, struct rpc_reply_hdr *reply)
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{
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int rc = 0;
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if (!reply)
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return -1;
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rc |= xdr_recv_uint32(xdr, &reply->xid); /* xid */
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rc |= xdr_recv_uint32(xdr, &reply->type); /* type */
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rc |= xdr_recv_uint32(xdr, &reply->reply_stat); /* reply_stat */
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/* acc_hdr */
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if (reply->reply_stat == RPCMSG_REPLYSTAT_ACCEPTED) {
|
||
|
|
rc |= xdr_recv_uint32(xdr, &reply->data.acc_hdr.verf_flavor);
|
||
|
|
rc |= xdr_recv_uint32(xdr, &reply->data.acc_hdr.verf_length);
|
||
|
|
rc |= xdr_recv_uint32(xdr, &reply->data.acc_hdr.accept_stat);
|
||
|
|
}
|
||
|
|
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
int xdr_start_request(struct msm_rpc_xdr *xdr, uint32_t prog,
|
||
|
|
uint32_t ver, uint32_t proc)
|
||
|
|
{
|
||
|
|
mutex_lock(&xdr->out_lock);
|
||
|
|
|
||
|
|
/* TODO: replace below function with its implementation */
|
||
|
|
msm_rpc_setup_req((struct rpc_request_hdr *)xdr->out_buf,
|
||
|
|
prog, ver, proc);
|
||
|
|
|
||
|
|
xdr->out_index = sizeof(struct rpc_request_hdr);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int xdr_start_accepted_reply(struct msm_rpc_xdr *xdr, uint32_t accept_status)
|
||
|
|
{
|
||
|
|
struct rpc_reply_hdr *reply;
|
||
|
|
|
||
|
|
mutex_lock(&xdr->out_lock);
|
||
|
|
|
||
|
|
/* TODO: err if xdr is not cb xdr */
|
||
|
|
reply = (struct rpc_reply_hdr *)xdr->out_buf;
|
||
|
|
|
||
|
|
/* TODO: use xdr functions instead */
|
||
|
|
reply->xid = ((struct rpc_request_hdr *)(xdr->in_buf))->xid;
|
||
|
|
reply->type = cpu_to_be32(1); /* reply */
|
||
|
|
reply->reply_stat = cpu_to_be32(RPCMSG_REPLYSTAT_ACCEPTED);
|
||
|
|
|
||
|
|
reply->data.acc_hdr.accept_stat = cpu_to_be32(accept_status);
|
||
|
|
reply->data.acc_hdr.verf_flavor = 0;
|
||
|
|
reply->data.acc_hdr.verf_length = 0;
|
||
|
|
|
||
|
|
xdr->out_index = sizeof(*reply);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int xdr_send_msg(struct msm_rpc_xdr *xdr)
|
||
|
|
{
|
||
|
|
int rc = 0;
|
||
|
|
|
||
|
|
rc = msm_rpc_write(xdr->ept, xdr->out_buf,
|
||
|
|
xdr->out_index);
|
||
|
|
if (rc > 0)
|
||
|
|
rc = 0;
|
||
|
|
|
||
|
|
mutex_unlock(&xdr->out_lock);
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
void xdr_init(struct msm_rpc_xdr *xdr)
|
||
|
|
{
|
||
|
|
mutex_init(&xdr->out_lock);
|
||
|
|
mutex_init(&xdr->in_lock);
|
||
|
|
|
||
|
|
xdr->in_buf = NULL;
|
||
|
|
xdr->in_size = 0;
|
||
|
|
xdr->in_index = 0;
|
||
|
|
|
||
|
|
xdr->out_buf = NULL;
|
||
|
|
xdr->out_size = 0;
|
||
|
|
xdr->out_index = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void xdr_init_input(struct msm_rpc_xdr *xdr, void *buf, uint32_t size)
|
||
|
|
{
|
||
|
|
mutex_lock(&xdr->in_lock);
|
||
|
|
|
||
|
|
xdr->in_buf = buf;
|
||
|
|
xdr->in_size = size;
|
||
|
|
xdr->in_index = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void xdr_init_output(struct msm_rpc_xdr *xdr, void *buf, uint32_t size)
|
||
|
|
{
|
||
|
|
xdr->out_buf = buf;
|
||
|
|
xdr->out_size = size;
|
||
|
|
xdr->out_index = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void xdr_clean_input(struct msm_rpc_xdr *xdr)
|
||
|
|
{
|
||
|
|
kfree(xdr->in_buf);
|
||
|
|
xdr->in_buf = NULL;
|
||
|
|
xdr->in_size = 0;
|
||
|
|
xdr->in_index = 0;
|
||
|
|
|
||
|
|
mutex_unlock(&xdr->in_lock);
|
||
|
|
}
|
||
|
|
|
||
|
|
void xdr_clean_output(struct msm_rpc_xdr *xdr)
|
||
|
|
{
|
||
|
|
kfree(xdr->out_buf);
|
||
|
|
xdr->out_buf = NULL;
|
||
|
|
xdr->out_size = 0;
|
||
|
|
xdr->out_index = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
uint32_t xdr_read_avail(struct msm_rpc_xdr *xdr)
|
||
|
|
{
|
||
|
|
return xdr->in_size;
|
||
|
|
}
|