Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
226
drivers/isdn/hardware/eicon/istream.c
Normal file
226
drivers/isdn/hardware/eicon/istream.c
Normal file
@@ -0,0 +1,226 @@
|
||||
|
||||
/*
|
||||
*
|
||||
Copyright (c) Eicon Networks, 2002.
|
||||
*
|
||||
This source file is supplied for the use with
|
||||
Eicon Networks range of DIVA Server Adapters.
|
||||
*
|
||||
Eicon File Revision : 2.1
|
||||
*
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2, or (at your option)
|
||||
any later version.
|
||||
*
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY
|
||||
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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*
|
||||
*/
|
||||
#include "platform.h"
|
||||
#if defined(DIVA_ISTREAM) /* { */
|
||||
#include "pc.h"
|
||||
#include "pr_pc.h"
|
||||
#include "di_defs.h"
|
||||
#include "divasync.h"
|
||||
#include "di.h"
|
||||
#if !defined USE_EXTENDED_DEBUGS
|
||||
#include "dimaint.h"
|
||||
#else
|
||||
#define dprintf
|
||||
#endif
|
||||
#include "dfifo.h"
|
||||
int diva_istream_write (void* context,
|
||||
int Id,
|
||||
void* data,
|
||||
int length,
|
||||
int final,
|
||||
byte usr1,
|
||||
byte usr2);
|
||||
int diva_istream_read (void* context,
|
||||
int Id,
|
||||
void* data,
|
||||
int max_length,
|
||||
int* final,
|
||||
byte* usr1,
|
||||
byte* usr2);
|
||||
/* -------------------------------------------------------------------
|
||||
Does provide iStream interface to the client
|
||||
------------------------------------------------------------------- */
|
||||
void diva_xdi_provide_istream_info (ADAPTER* a,
|
||||
diva_xdi_stream_interface_t* pi) {
|
||||
pi->provided_service = 0;
|
||||
}
|
||||
/* ------------------------------------------------------------------
|
||||
Does write the data from caller's buffer to the card's
|
||||
stream interface.
|
||||
If synchronous service was requested, then function
|
||||
does return amount of data written to stream.
|
||||
'final' does indicate that pice of data to be written is
|
||||
final part of frame (necessary only by structured datatransfer)
|
||||
return 0 if zero lengh packet was written
|
||||
return -1 if stream is full
|
||||
------------------------------------------------------------------ */
|
||||
int diva_istream_write (void* context,
|
||||
int Id,
|
||||
void* data,
|
||||
int length,
|
||||
int final,
|
||||
byte usr1,
|
||||
byte usr2) {
|
||||
ADAPTER* a = (ADAPTER*)context;
|
||||
int written = 0, to_write = -1;
|
||||
char tmp[4];
|
||||
byte* data_ptr = (byte*)data;
|
||||
for (;;) {
|
||||
a->ram_in_dw (a,
|
||||
#ifdef PLATFORM_GT_32BIT
|
||||
ULongToPtr(a->tx_stream[Id] + a->tx_pos[Id]),
|
||||
#else
|
||||
(void*)(a->tx_stream[Id] + a->tx_pos[Id]),
|
||||
#endif
|
||||
(dword*)&tmp[0],
|
||||
1);
|
||||
if (tmp[0] & DIVA_DFIFO_READY) { /* No free blocks more */
|
||||
if (to_write < 0)
|
||||
return (-1); /* was not able to write */
|
||||
break; /* only part of message was written */
|
||||
}
|
||||
to_write = MIN(length, DIVA_DFIFO_DATA_SZ);
|
||||
if (to_write) {
|
||||
a->ram_out_buffer (a,
|
||||
#ifdef PLATFORM_GT_32BIT
|
||||
ULongToPtr(a->tx_stream[Id] + a->tx_pos[Id]+4),
|
||||
#else
|
||||
(void*)(a->tx_stream[Id] + a->tx_pos[Id] + 4),
|
||||
#endif
|
||||
data_ptr,
|
||||
(word)to_write);
|
||||
length -= to_write;
|
||||
written += to_write;
|
||||
data_ptr += to_write;
|
||||
}
|
||||
tmp[1] = (char)to_write;
|
||||
tmp[0] = (tmp[0] & DIVA_DFIFO_WRAP) |
|
||||
DIVA_DFIFO_READY |
|
||||
((!length && final) ? DIVA_DFIFO_LAST : 0);
|
||||
if (tmp[0] & DIVA_DFIFO_LAST) {
|
||||
tmp[2] = usr1;
|
||||
tmp[3] = usr2;
|
||||
}
|
||||
a->ram_out_dw (a,
|
||||
#ifdef PLATFORM_GT_32BIT
|
||||
ULongToPtr(a->tx_stream[Id] + a->tx_pos[Id]),
|
||||
#else
|
||||
(void*)(a->tx_stream[Id] + a->tx_pos[Id]),
|
||||
#endif
|
||||
(dword*)&tmp[0],
|
||||
1);
|
||||
if (tmp[0] & DIVA_DFIFO_WRAP) {
|
||||
a->tx_pos[Id] = 0;
|
||||
} else {
|
||||
a->tx_pos[Id] += DIVA_DFIFO_STEP;
|
||||
}
|
||||
if (!length) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
return (written);
|
||||
}
|
||||
/* -------------------------------------------------------------------
|
||||
In case of SYNCRONOUS service:
|
||||
Does write data from stream in caller's buffer.
|
||||
Does return amount of data written to buffer
|
||||
Final flag is set on return if last part of structured frame
|
||||
was received
|
||||
return 0 if zero packet was received
|
||||
return -1 if stream is empty
|
||||
return -2 if read buffer does not profide sufficient space
|
||||
to accommodate entire segment
|
||||
max_length should be at least 68 bytes
|
||||
------------------------------------------------------------------- */
|
||||
int diva_istream_read (void* context,
|
||||
int Id,
|
||||
void* data,
|
||||
int max_length,
|
||||
int* final,
|
||||
byte* usr1,
|
||||
byte* usr2) {
|
||||
ADAPTER* a = (ADAPTER*)context;
|
||||
int read = 0, to_read = -1;
|
||||
char tmp[4];
|
||||
byte* data_ptr = (byte*)data;
|
||||
*final = 0;
|
||||
for (;;) {
|
||||
a->ram_in_dw (a,
|
||||
#ifdef PLATFORM_GT_32BIT
|
||||
ULongToPtr(a->rx_stream[Id] + a->rx_pos[Id]),
|
||||
#else
|
||||
(void*)(a->rx_stream[Id] + a->rx_pos[Id]),
|
||||
#endif
|
||||
(dword*)&tmp[0],
|
||||
1);
|
||||
if (tmp[1] > max_length) {
|
||||
if (to_read < 0)
|
||||
return (-2); /* was not able to read */
|
||||
break;
|
||||
}
|
||||
if (!(tmp[0] & DIVA_DFIFO_READY)) {
|
||||
if (to_read < 0)
|
||||
return (-1); /* was not able to read */
|
||||
break;
|
||||
}
|
||||
to_read = MIN(max_length, tmp[1]);
|
||||
if (to_read) {
|
||||
a->ram_in_buffer(a,
|
||||
#ifdef PLATFORM_GT_32BIT
|
||||
ULongToPtr(a->rx_stream[Id] + a->rx_pos[Id] + 4),
|
||||
#else
|
||||
(void*)(a->rx_stream[Id] + a->rx_pos[Id] + 4),
|
||||
#endif
|
||||
data_ptr,
|
||||
(word)to_read);
|
||||
max_length -= to_read;
|
||||
read += to_read;
|
||||
data_ptr += to_read;
|
||||
}
|
||||
if (tmp[0] & DIVA_DFIFO_LAST) {
|
||||
*final = 1;
|
||||
}
|
||||
tmp[0] &= DIVA_DFIFO_WRAP;
|
||||
a->ram_out_dw(a,
|
||||
#ifdef PLATFORM_GT_32BIT
|
||||
ULongToPtr(a->rx_stream[Id] + a->rx_pos[Id]),
|
||||
#else
|
||||
(void*)(a->rx_stream[Id] + a->rx_pos[Id]),
|
||||
#endif
|
||||
(dword*)&tmp[0],
|
||||
1);
|
||||
if (tmp[0] & DIVA_DFIFO_WRAP) {
|
||||
a->rx_pos[Id] = 0;
|
||||
} else {
|
||||
a->rx_pos[Id] += DIVA_DFIFO_STEP;
|
||||
}
|
||||
if (*final) {
|
||||
if (usr1)
|
||||
*usr1 = tmp[2];
|
||||
if (usr2)
|
||||
*usr2 = tmp[3];
|
||||
break;
|
||||
}
|
||||
}
|
||||
return (read);
|
||||
}
|
||||
/* ---------------------------------------------------------------------
|
||||
Does check if one of streams had caused interrupt and does
|
||||
wake up corresponding application
|
||||
--------------------------------------------------------------------- */
|
||||
void pr_stream (ADAPTER * a) {
|
||||
}
|
||||
#endif /* } */
|
||||
Reference in New Issue
Block a user