diff options
Diffstat (limited to 'drivers/crypto/cavium/zip/zip_inflate.c')
| -rw-r--r-- | drivers/crypto/cavium/zip/zip_inflate.c | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/drivers/crypto/cavium/zip/zip_inflate.c b/drivers/crypto/cavium/zip/zip_inflate.c deleted file mode 100644 index 7e0d73e2f89e..000000000000 --- a/drivers/crypto/cavium/zip/zip_inflate.c +++ /dev/null @@ -1,223 +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_inflate.h" - -static int prepare_inflate_zcmd(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 */ - - /* Decompression History Gather list - no gather list */ - zip_cmd->s.hg = 0; - /* For decompression, CE must be 0x0. */ - zip_cmd->s.ce = 0; - /* For decompression, SS must be 0x0. */ - zip_cmd->s.ss = 0; - /* For decompression, SF should always be set. */ - zip_cmd->s.sf = 1; - - /* Begin File */ - if (zip_ops->begin_file == 0) - zip_cmd->s.bf = 0; - else - zip_cmd->s.bf = 1; - - zip_cmd->s.ef = 1; - /* 0: for Deflate decompression, 3: for LZS decompression */ - zip_cmd->s.cc = zip_ops->ccode; - - /* IWORD #1*/ - - /* adler checksum */ - zip_cmd->s.adlercrc32 = zip_ops->csum; - - /* - * HISTORYLENGTH must be 0x0 for any ZIP decompress operation. - * History data is added to a decompression operation via IWORD3. - */ - zip_cmd->s.historylength = 0; - 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; - - zip_dbg("Data Direct Input case "); - - /* IWORD # 6 and 7 - input pointer */ - zip_cmd->s.dg = 0; - zip_cmd->s.inp_ptr_addr.s.addr = __pa((u8 *)zip_ops->input); - zip_cmd->s.inp_ptr_ctl.s.length = zip_ops->input_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; - - /* Returning 0 for time being.*/ - return 0; -} - -/** - * zip_inflate - API to offload inflate 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 inflate command and submits it to the zip - * engine for processing. - * - * Return: 0 if successful or error code - */ -int zip_inflate(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; - - /* Prepare inflate zip command */ - prepare_inflate_zcmd(zip_ops, s, zip_cmd); - - atomic64_add(zip_ops->input_len, &zip_dev->stats.decomp_in_bytes); - - /* Load inflate command to zip queue and ring the doorbell */ - queue = zip_load_instr(zip_cmd, zip_dev); - - /* Decompression requests submitted stats update */ - atomic64_inc(&zip_dev->stats.decomp_req_submit); - - /* Wait for completion or error */ - zip_poll_result(result_ptr); - - /* Decompression requests completed stats update */ - atomic64_inc(&zip_dev->stats.decomp_req_complete); - - zip_ops->compcode = result_ptr->s.compcode; - switch (zip_ops->compcode) { - case ZIP_CMD_NOTDONE: - zip_dbg("Zip Instruction not yet completed\n"); - return ZIP_ERROR; - - case ZIP_CMD_SUCCESS: - zip_dbg("Zip Instruction completed successfully\n"); - break; - - case ZIP_CMD_DYNAMIC_STOP: - zip_dbg(" Dynamic stop Initiated\n"); - break; - - default: - zip_dbg("Instruction failed. Code = %d\n", zip_ops->compcode); - atomic64_inc(&zip_dev->stats.decomp_bad_reqs); - zip_update_cmd_bufs(zip_dev, queue); - return ZIP_ERROR; - } - - zip_update_cmd_bufs(zip_dev, queue); - - if ((zip_ops->ccode == 3) && (zip_ops->flush == 4) && - (zip_ops->compcode != ZIP_CMD_DYNAMIC_STOP)) - result_ptr->s.ef = 1; - - zip_ops->csum = result_ptr->s.adler32; - - atomic64_add(result_ptr->s.totalbyteswritten, - &zip_dev->stats.decomp_out_bytes); - - if (zip_ops->output_len < result_ptr->s.totalbyteswritten) { - 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; - } - - zip_ops->bytes_read = result_ptr->s.totalbytesread; - zip_ops->bits_processed = result_ptr->s.totalbitsprocessed; - zip_ops->end_file = result_ptr->s.ef; - if (zip_ops->end_file) { - switch (zip_ops->format) { - case RAW_FORMAT: - zip_dbg("RAW Format: %d ", zip_ops->format); - /* Get checksum from engine */ - 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("Format error:%d\n", zip_ops->format); - } - } - - return 0; -} |