diff options
Diffstat (limited to 'drivers/crypto/cavium/zip/zip_deflate.c')
| -rw-r--r-- | drivers/crypto/cavium/zip/zip_deflate.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/drivers/crypto/cavium/zip/zip_deflate.c b/drivers/crypto/cavium/zip/zip_deflate.c deleted file mode 100644 index d7133f857d67..000000000000 --- a/drivers/crypto/cavium/zip/zip_deflate.c +++ /dev/null @@ -1,200 +0,0 @@ -/***********************license start************************************ - * Copyright (c) 2003-2017 Cavium, Inc. - * All rights reserved. - * - * License: one of 'Cavium License' or 'GNU General Public License Version 2' - * - * This file is provided under the terms of the Cavium License (see below) - * or under the terms of GNU General Public License, Version 2, as - * published by the Free Software Foundation. When using or redistributing - * this file, you may do so under either license. - * - * Cavium License: Redistribution and use in source and binary forms, with - * or without modification, are permitted provided that the following - * conditions are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials provided - * with the distribution. - * - * * Neither the name of Cavium Inc. nor the names of its contributors may be - * used to endorse or promote products derived from this software without - * specific prior written permission. - * - * This Software, including technical data, may be subject to U.S. export - * control laws, including the U.S. Export Administration Act and its - * associated regulations, and may be subject to export or import - * regulations in other countries. - * - * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" - * AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS - * OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH - * RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY - * REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT - * DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) - * WARRANTIES OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A - * PARTICULAR PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET - * ENJOYMENT, QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE - * ENTIRE RISK ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES - * WITH YOU. - ***********************license end**************************************/ - -#include <linux/delay.h> -#include <linux/sched.h> - -#include "common.h" -#include "zip_deflate.h" - -/* Prepares the deflate zip command */ -static int prepare_zip_command(struct zip_operation *zip_ops, - struct zip_state *s, union zip_inst_s *zip_cmd) -{ - union zip_zres_s *result_ptr = &s->result; - - memset(zip_cmd, 0, sizeof(s->zip_cmd)); - memset(result_ptr, 0, sizeof(s->result)); - - /* IWORD #0 */ - /* History gather */ - zip_cmd->s.hg = 0; - /* compression enable = 1 for deflate */ - zip_cmd->s.ce = 1; - /* sf (sync flush) */ - zip_cmd->s.sf = 1; - /* ef (end of file) */ - if (zip_ops->flush == ZIP_FLUSH_FINISH) { - zip_cmd->s.ef = 1; - zip_cmd->s.sf = 0; - } - - zip_cmd->s.cc = zip_ops->ccode; - /* ss (compression speed/storage) */ - zip_cmd->s.ss = zip_ops->speed; - - /* IWORD #1 */ - /* adler checksum */ - zip_cmd->s.adlercrc32 = zip_ops->csum; - zip_cmd->s.historylength = zip_ops->history_len; - zip_cmd->s.dg = 0; - - /* IWORD # 6 and 7 - compression input/history pointer */ - zip_cmd->s.inp_ptr_addr.s.addr = __pa(zip_ops->input); - zip_cmd->s.inp_ptr_ctl.s.length = (zip_ops->input_len + - zip_ops->history_len); - zip_cmd->s.ds = 0; - - /* IWORD # 8 and 9 - Output pointer */ - zip_cmd->s.out_ptr_addr.s.addr = __pa(zip_ops->output); - zip_cmd->s.out_ptr_ctl.s.length = zip_ops->output_len; - /* maximum number of output-stream bytes that can be written */ - zip_cmd->s.totaloutputlength = zip_ops->output_len; - - /* IWORD # 10 and 11 - Result pointer */ - zip_cmd->s.res_ptr_addr.s.addr = __pa(result_ptr); - /* Clearing completion code */ - result_ptr->s.compcode = 0; - - return 0; -} - -/** - * zip_deflate - API to offload deflate operation to hardware - * @zip_ops: Pointer to zip operation structure - * @s: Pointer to the structure representing zip state - * @zip_dev: Pointer to zip device structure - * - * This function prepares the zip deflate command and submits it to the zip - * engine for processing. - * - * Return: 0 if successful or error code - */ -int zip_deflate(struct zip_operation *zip_ops, struct zip_state *s, - struct zip_device *zip_dev) -{ - union zip_inst_s *zip_cmd = &s->zip_cmd; - union zip_zres_s *result_ptr = &s->result; - u32 queue; - - /* Prepares zip command based on the input parameters */ - prepare_zip_command(zip_ops, s, zip_cmd); - - atomic64_add(zip_ops->input_len, &zip_dev->stats.comp_in_bytes); - /* Loads zip command into command queues and rings door bell */ - queue = zip_load_instr(zip_cmd, zip_dev); - - /* Stats update for compression requests submitted */ - atomic64_inc(&zip_dev->stats.comp_req_submit); - - /* Wait for completion or error */ - zip_poll_result(result_ptr); - - /* Stats update for compression requests completed */ - atomic64_inc(&zip_dev->stats.comp_req_complete); - - zip_ops->compcode = result_ptr->s.compcode; - switch (zip_ops->compcode) { - case ZIP_CMD_NOTDONE: - zip_dbg("Zip instruction not yet completed"); - return ZIP_ERROR; - - case ZIP_CMD_SUCCESS: - zip_dbg("Zip instruction completed successfully"); - zip_update_cmd_bufs(zip_dev, queue); - break; - - case ZIP_CMD_DTRUNC: - zip_dbg("Output Truncate error"); - /* Returning ZIP_ERROR to avoid copy to user */ - return ZIP_ERROR; - - default: - zip_err("Zip instruction failed. Code:%d", zip_ops->compcode); - return ZIP_ERROR; - } - - /* Update the CRC depending on the format */ - switch (zip_ops->format) { - case RAW_FORMAT: - zip_dbg("RAW Format: %d ", zip_ops->format); - /* Get checksum from engine, need to feed it again */ - zip_ops->csum = result_ptr->s.adler32; - break; - - case ZLIB_FORMAT: - zip_dbg("ZLIB Format: %d ", zip_ops->format); - zip_ops->csum = result_ptr->s.adler32; - break; - - case GZIP_FORMAT: - zip_dbg("GZIP Format: %d ", zip_ops->format); - zip_ops->csum = result_ptr->s.crc32; - break; - - case LZS_FORMAT: - zip_dbg("LZS Format: %d ", zip_ops->format); - break; - - default: - zip_err("Unknown Format:%d\n", zip_ops->format); - } - - atomic64_add(result_ptr->s.totalbyteswritten, - &zip_dev->stats.comp_out_bytes); - - /* Update output_len */ - if (zip_ops->output_len < result_ptr->s.totalbyteswritten) { - /* Dynamic stop && strm->output_len < zipconstants[onfsize] */ - zip_err("output_len (%d) < total bytes written(%d)\n", - zip_ops->output_len, result_ptr->s.totalbyteswritten); - zip_ops->output_len = 0; - - } else { - zip_ops->output_len = result_ptr->s.totalbyteswritten; - } - - return 0; -} |