135 lines
3.9 KiB
C
135 lines
3.9 KiB
C
/*
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*
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Copyright (c) Dialogic (R) 2009 - 2010
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*
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This source file is supplied for the use with
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Eicon Networks range of DIVA Server Adapters.
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*
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Dialogic (R) File Revision : 1.9
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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 as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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*
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#ifndef __DIVA_SPI_DESCRIPTOR_H__
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#define __DIVA_SPI_DESCRIPTOR_H__
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#define MAX_SPI_DESCRIPTOR_LENGTH (4*1024)
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#define MAX_XCONN_PER_DSP_DESCRIPTORS 8
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#define SMALL_FLAT_RX_BUFFER_LENGTH 128
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/*
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SPI descriptor is always transferred in two parts:
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byte* msg;
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xmit(&msg[4], length-4);
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xmit(msg, 4);
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The second transfer is used as indication about end of the
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descriptor transfer.
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*/
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typedef struct _diva_spi_msg_hdr {
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byte length_lo; /* Total transfer length, includes the the length of the header, lo byte */
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byte length_hi; /* Total transfer length, includes the length of the header, h byte */
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byte Id; /* IDI Id. 0xff in case of the system message */
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byte Ind; /* Ind */
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} diva_spi_msg_hdr_t;
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typedef struct _diva_spi_msg {
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diva_spi_msg_hdr_t hdr;
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byte data[MAX_SPI_DESCRIPTOR_LENGTH-sizeof(diva_spi_msg_hdr_t)];
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} diva_spi_msg_t;
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/*
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System messages:
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if Id == 0xff then system message
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if (length_hi & 0x80) then system message is chained after the message
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Messages:
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byte - message type
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byte - message length without this byte and the length byte
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body - sequence of bytes, depends on the type of message
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*/
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/*
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Used for comminication with
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monitor task
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*/
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typedef struct _diva_dsp_monitor_message_hdr {
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byte length_lo; /* Total transfer length, includes the the length of the header, lo byte */
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byte length_hi; /* Total transfer length, includes the length of the header, h byte */
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byte message_lo;
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byte message_hi;
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} diva_dsp_monitor_message_hdr_t;
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typedef struct _diva_dsp_monitor_message {
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diva_dsp_monitor_message_hdr_t hdr;
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byte data[MAX_SPI_DESCRIPTOR_LENGTH-sizeof(diva_dsp_monitor_message_hdr_t)];
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} diva_dsp_monitor_message_t;
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/*
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Format of the request:
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length_lo
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length_hi - set to "data_length + 5"
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Id
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Req - Stored in the Ind field
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RegCh - Req Ch stored in the first byte of data field
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data - first byte of data
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*/
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/*
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Format of the return code without extended info:
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length_lo
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length_hi - set to 6
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Id
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Rc - Stored in the Ind field
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RcCh - RcCh stored in the first byte of data field
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type - Type. Set to zero for RC, stored in the second byte of data field
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Format of the return code with extended info:
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length_lo
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length_hi - set to 14
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Id
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Rc - Stored in the Ind field
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RcCh - RcCh stored in the first byte of data field
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type - Type. Set to zero for RC, stored in the second byte of data field
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dword - extended info type (bytes 2,3,4,5 of data field)
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dword - extended info (bytes 6,7,8,9 of data field)
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*/
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/*
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Format of the indication:
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length_lo
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length_hi - set to "data_lengt + 6"
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Id
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Ind - Stored in the Ind field
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IndCh - IndCh stored in the first byte of data field
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type - Type. Set to one for IND, stored in the second byte of data field
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data - first byte of data, starts at third data byte
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*/
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typedef struct _diva_xconn_msg_hdr {
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word counter;
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word length;
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} diva_xconn_msg_hdr_t;
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typedef struct _diva_xconn_msg {
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diva_xconn_msg_hdr_t hdr;
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byte data[MAX_SPI_DESCRIPTOR_LENGTH-sizeof(diva_xconn_msg_hdr_t)];
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} diva_xconn_msg_t;
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#endif
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