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Diffstat (limited to 'drivers/staging/altera-stapl/altera-comp.c')
-rw-r--r--drivers/staging/altera-stapl/altera-comp.c142
1 files changed, 0 insertions, 142 deletions
diff --git a/drivers/staging/altera-stapl/altera-comp.c b/drivers/staging/altera-stapl/altera-comp.c
deleted file mode 100644
index 49b103bedaaf..000000000000
--- a/drivers/staging/altera-stapl/altera-comp.c
+++ /dev/null
@@ -1,142 +0,0 @@
-/*
- * altera-comp.c
- *
- * altera FPGA driver
- *
- * Copyright (C) Altera Corporation 1998-2001
- * Copyright (C) 2010 NetUP Inc.
- * Copyright (C) 2010 Igor M. Liplianin <liplianin@netup.ru>
- *
- * 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 of the License, or
- * (at your option) any later version.
- *
- * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/kernel.h>
-#include "altera-exprt.h"
-
-#define SHORT_BITS 16
-#define CHAR_BITS 8
-#define DATA_BLOB_LENGTH 3
-#define MATCH_DATA_LENGTH 8192
-#define ALTERA_REQUEST_SIZE 1024
-#define ALTERA_BUFFER_SIZE (MATCH_DATA_LENGTH + ALTERA_REQUEST_SIZE)
-
-static u32 altera_bits_req(u32 n)
-{
- u32 result = SHORT_BITS;
-
- if (n == 0)
- result = 1;
- else {
- /* Look for the highest non-zero bit position */
- while ((n & (1 << (SHORT_BITS - 1))) == 0) {
- n <<= 1;
- --result;
- }
- }
-
- return result;
-}
-
-static u32 altera_read_packed(u8 *buffer, u32 bits, u32 *bits_avail,
- u32 *in_index)
-{
- u32 result = 0;
- u32 shift = 0;
- u32 databyte = 0;
-
- while (bits > 0) {
- databyte = buffer[*in_index];
- result |= (((databyte >> (CHAR_BITS - *bits_avail))
- & (0xff >> (CHAR_BITS - *bits_avail))) << shift);
-
- if (bits <= *bits_avail) {
- result &= (0xffff >> (SHORT_BITS - (bits + shift)));
- *bits_avail -= bits;
- bits = 0;
- } else {
- ++(*in_index);
- shift += *bits_avail;
- bits -= *bits_avail;
- *bits_avail = CHAR_BITS;
- }
- }
-
- return result;
-}
-
-u32 altera_shrink(u8 *in, u32 in_length, u8 *out, u32 out_length, s32 version)
-{
- u32 i, j, data_length = 0L;
- u32 offset, length;
- u32 match_data_length = MATCH_DATA_LENGTH;
- u32 bits_avail = CHAR_BITS;
- u32 in_index = 0L;
-
- if (version > 0)
- --match_data_length;
-
- for (i = 0; i < out_length; ++i)
- out[i] = 0;
-
- /* Read number of bytes in data. */
- for (i = 0; i < sizeof(in_length); ++i) {
- data_length = data_length | (
- altera_read_packed(in,
- CHAR_BITS,
- &bits_avail,
- &in_index) << (i * CHAR_BITS));
- }
-
- if (data_length > out_length) {
- data_length = 0L;
- return data_length;
- }
-
- i = 0;
- while (i < data_length) {
- /* A 0 bit indicates literal data. */
- if (altera_read_packed(in, 1, &bits_avail,
- &in_index) == 0) {
- for (j = 0; j < DATA_BLOB_LENGTH; ++j) {
- if (i < data_length) {
- out[i] = (u8)altera_read_packed(in,
- CHAR_BITS,
- &bits_avail,
- &in_index);
- i++;
- }
- }
- } else {
- /* A 1 bit indicates offset/length to follow. */
- offset = altera_read_packed(in, altera_bits_req((s16)
- (i > match_data_length ?
- match_data_length : i)),
- &bits_avail,
- &in_index);
- length = altera_read_packed(in, CHAR_BITS,
- &bits_avail,
- &in_index);
- for (j = 0; j < length; ++j) {
- if (i < data_length) {
- out[i] = out[i - offset];
- i++;
- }
- }
- }
- }
-
- return data_length;
-}

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