diff options
| -rw-r--r-- | drivers/crypto/cavium/zip/Makefile | 5 | ||||
| -rw-r--r-- | drivers/crypto/cavium/zip/zip_crypto.c | 313 | ||||
| -rw-r--r-- | drivers/crypto/cavium/zip/zip_crypto.h | 2 | ||||
| -rw-r--r-- | drivers/crypto/cavium/zip/zip_deflate.c | 190 | ||||
| -rw-r--r-- | drivers/crypto/cavium/zip/zip_deflate.h | 62 | ||||
| -rw-r--r-- | drivers/crypto/cavium/zip/zip_device.c | 1 | ||||
| -rw-r--r-- | drivers/crypto/cavium/zip/zip_inflate.c | 211 | ||||
| -rw-r--r-- | drivers/crypto/cavium/zip/zip_inflate.h | 62 | ||||
| -rw-r--r-- | drivers/crypto/cavium/zip/zip_main.c | 57 |
9 files changed, 845 insertions, 58 deletions
diff --git a/drivers/crypto/cavium/zip/Makefile b/drivers/crypto/cavium/zip/Makefile index 2c0750885165..b2f3baaff757 100644 --- a/drivers/crypto/cavium/zip/Makefile +++ b/drivers/crypto/cavium/zip/Makefile @@ -5,4 +5,7 @@ obj-$(CONFIG_CRYPTO_DEV_CAVIUM_ZIP) += thunderx_zip.o thunderx_zip-y := zip_main.o \ zip_device.o \ - zip_mem.o + zip_crypto.o \ + zip_mem.o \ + zip_deflate.o \ + zip_inflate.o diff --git a/drivers/crypto/cavium/zip/zip_crypto.c b/drivers/crypto/cavium/zip/zip_crypto.c new file mode 100644 index 000000000000..8df4d26cf9d4 --- /dev/null +++ b/drivers/crypto/cavium/zip/zip_crypto.c @@ -0,0 +1,313 @@ +/***********************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 "zip_crypto.h" + +static void zip_static_init_zip_ops(struct zip_operation *zip_ops, + int lzs_flag) +{ + zip_ops->flush = ZIP_FLUSH_FINISH; + + /* equivalent to level 6 of opensource zlib */ + zip_ops->speed = 1; + + if (!lzs_flag) { + zip_ops->ccode = 0; /* Auto Huffman */ + zip_ops->lzs_flag = 0; + zip_ops->format = ZLIB_FORMAT; + } else { + zip_ops->ccode = 3; /* LZS Encoding */ + zip_ops->lzs_flag = 1; + zip_ops->format = LZS_FORMAT; + } + zip_ops->begin_file = 1; + zip_ops->history_len = 0; + zip_ops->end_file = 1; + zip_ops->compcode = 0; + zip_ops->csum = 1; /* Adler checksum desired */ +} + +int zip_ctx_init(struct zip_kernel_ctx *zip_ctx, int lzs_flag) +{ + struct zip_operation *comp_ctx = &zip_ctx->zip_comp; + struct zip_operation *decomp_ctx = &zip_ctx->zip_decomp; + + zip_static_init_zip_ops(comp_ctx, lzs_flag); + zip_static_init_zip_ops(decomp_ctx, lzs_flag); + + comp_ctx->input = zip_data_buf_alloc(MAX_INPUT_BUFFER_SIZE); + if (!comp_ctx->input) + return -ENOMEM; + + comp_ctx->output = zip_data_buf_alloc(MAX_OUTPUT_BUFFER_SIZE); + if (!comp_ctx->output) + goto err_comp_input; + + decomp_ctx->input = zip_data_buf_alloc(MAX_INPUT_BUFFER_SIZE); + if (!decomp_ctx->input) + goto err_comp_output; + + decomp_ctx->output = zip_data_buf_alloc(MAX_OUTPUT_BUFFER_SIZE); + if (!decomp_ctx->output) + goto err_decomp_input; + + return 0; + +err_decomp_input: + zip_data_buf_free(decomp_ctx->input, MAX_INPUT_BUFFER_SIZE); + +err_comp_output: + zip_data_buf_free(comp_ctx->output, MAX_OUTPUT_BUFFER_SIZE); + +err_comp_input: + zip_data_buf_free(comp_ctx->input, MAX_INPUT_BUFFER_SIZE); + + return -ENOMEM; +} + +void zip_ctx_exit(struct zip_kernel_ctx *zip_ctx) +{ + struct zip_operation *comp_ctx = &zip_ctx->zip_comp; + struct zip_operation *dec_ctx = &zip_ctx->zip_decomp; + + zip_data_buf_free(comp_ctx->input, MAX_INPUT_BUFFER_SIZE); + zip_data_buf_free(comp_ctx->output, MAX_OUTPUT_BUFFER_SIZE); + + zip_data_buf_free(dec_ctx->input, MAX_INPUT_BUFFER_SIZE); + zip_data_buf_free(dec_ctx->output, MAX_OUTPUT_BUFFER_SIZE); +} + +int zip_compress(const u8 *src, unsigned int slen, + u8 *dst, unsigned int *dlen, + struct zip_kernel_ctx *zip_ctx) +{ + struct zip_operation *zip_ops = NULL; + struct zip_state zip_state; + struct zip_device *zip = NULL; + int ret; + + if (!zip_ctx || !src || !dst || !dlen) + return -ENOMEM; + + zip = zip_get_device(zip_get_node_id()); + if (!zip) + return -ENODEV; + + memset(&zip_state, 0, sizeof(struct zip_state)); + zip_ops = &zip_ctx->zip_comp; + + zip_ops->input_len = slen; + zip_ops->output_len = *dlen; + memcpy(zip_ops->input, src, slen); + + ret = zip_deflate(zip_ops, &zip_state, zip); + + if (!ret) { + *dlen = zip_ops->output_len; + memcpy(dst, zip_ops->output, *dlen); + } + + return ret; +} + +int zip_decompress(const u8 *src, unsigned int slen, + u8 *dst, unsigned int *dlen, + struct zip_kernel_ctx *zip_ctx) +{ + struct zip_operation *zip_ops = NULL; + struct zip_state zip_state; + struct zip_device *zip = NULL; + int ret; + + if (!zip_ctx || !src || !dst || !dlen) + return -ENOMEM; + + zip = zip_get_device(zip_get_node_id()); + if (!zip) + return -ENODEV; + + memset(&zip_state, 0, sizeof(struct zip_state)); + zip_ops = &zip_ctx->zip_decomp; + memcpy(zip_ops->input, src, slen); + + /* Work around for a bug in zlib which needs an extra bytes sometimes */ + if (zip_ops->ccode != 3) /* Not LZS Encoding */ + zip_ops->input[slen++] = 0; + + zip_ops->input_len = slen; + zip_ops->output_len = *dlen; + + ret = zip_inflate(zip_ops, &zip_state, zip); + + if (!ret) { + *dlen = zip_ops->output_len; + memcpy(dst, zip_ops->output, *dlen); + } + + return ret; +} + +/* Legacy Compress framework start */ +int zip_alloc_comp_ctx_deflate(struct crypto_tfm *tfm) +{ + int ret; + struct zip_kernel_ctx *zip_ctx = crypto_tfm_ctx(tfm); + + ret = zip_ctx_init(zip_ctx, 0); + + return ret; +} + +int zip_alloc_comp_ctx_lzs(struct crypto_tfm *tfm) +{ + int ret; + struct zip_kernel_ctx *zip_ctx = crypto_tfm_ctx(tfm); + + ret = zip_ctx_init(zip_ctx, 1); + + return ret; +} + +void zip_free_comp_ctx(struct crypto_tfm *tfm) +{ + struct zip_kernel_ctx *zip_ctx = crypto_tfm_ctx(tfm); + + zip_ctx_exit(zip_ctx); +} + +int zip_comp_compress(struct crypto_tfm *tfm, + const u8 *src, unsigned int slen, + u8 *dst, unsigned int *dlen) +{ + int ret; + struct zip_kernel_ctx *zip_ctx = crypto_tfm_ctx(tfm); + + ret = zip_compress(src, slen, dst, dlen, zip_ctx); + + return ret; +} + +int zip_comp_decompress(struct crypto_tfm *tfm, + const u8 *src, unsigned int slen, + u8 *dst, unsigned int *dlen) +{ + int ret; + struct zip_kernel_ctx *zip_ctx = crypto_tfm_ctx(tfm); + + ret = zip_decompress(src, slen, dst, dlen, zip_ctx); + + return ret; +} /* Legacy compress framework end */ + +/* SCOMP framework start */ +void *zip_alloc_scomp_ctx_deflate(struct crypto_scomp *tfm) +{ + int ret; + struct zip_kernel_ctx *zip_ctx; + + zip_ctx = kzalloc(sizeof(*zip_ctx), GFP_KERNEL); + if (!zip_ctx) + return ERR_PTR(-ENOMEM); + + ret = zip_ctx_init(zip_ctx, 0); + + if (ret) { + kzfree(zip_ctx); + return ERR_PTR(ret); + } + + return zip_ctx; +} + +void *zip_alloc_scomp_ctx_lzs(struct crypto_scomp *tfm) +{ + int ret; + struct zip_kernel_ctx *zip_ctx; + + zip_ctx = kzalloc(sizeof(*zip_ctx), GFP_KERNEL); + if (!zip_ctx) + return ERR_PTR(-ENOMEM); + + ret = zip_ctx_init(zip_ctx, 1); + + if (ret) { + kzfree(zip_ctx); + return ERR_PTR(ret); + } + + return zip_ctx; +} + +void zip_free_scomp_ctx(struct crypto_scomp *tfm, void *ctx) +{ + struct zip_kernel_ctx *zip_ctx = ctx; + + zip_ctx_exit(zip_ctx); + kzfree(zip_ctx); +} + +int zip_scomp_compress(struct crypto_scomp *tfm, + const u8 *src, unsigned int slen, + u8 *dst, unsigned int *dlen, void *ctx) +{ + int ret; + struct zip_kernel_ctx *zip_ctx = ctx; + + ret = zip_compress(src, slen, dst, dlen, zip_ctx); + + return ret; +} + +int zip_scomp_decompress(struct crypto_scomp *tfm, + const u8 *src, unsigned int slen, + u8 *dst, unsigned int *dlen, void *ctx) +{ + int ret; + struct zip_kernel_ctx *zip_ctx = ctx; + + ret = zip_decompress(src, slen, dst, dlen, zip_ctx); + + return ret; +} /* SCOMP framework end */ diff --git a/drivers/crypto/cavium/zip/zip_crypto.h b/drivers/crypto/cavium/zip/zip_crypto.h index 2d91b05a94b8..b59ddfcacd34 100644 --- a/drivers/crypto/cavium/zip/zip_crypto.h +++ b/drivers/crypto/cavium/zip/zip_crypto.h @@ -49,6 +49,8 @@ #include <linux/crypto.h> #include <crypto/internal/scompress.h> #include "common.h" +#include "zip_deflate.h" +#include "zip_inflate.h" struct zip_kernel_ctx { struct zip_operation zip_comp; diff --git a/drivers/crypto/cavium/zip/zip_deflate.c b/drivers/crypto/cavium/zip/zip_deflate.c new file mode 100644 index 000000000000..b02789c09201 --- /dev/null +++ b/drivers/crypto/cavium/zip/zip_deflate.c @@ -0,0 +1,190 @@ +/***********************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); + + /* Loads zip command into command queues and rings door bell */ + queue = zip_load_instr(zip_cmd, zip_dev); + + while (!result_ptr->s.compcode) + continue; + + 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); + } + + /* 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; +} diff --git a/drivers/crypto/cavium/zip/zip_deflate.h b/drivers/crypto/cavium/zip/zip_deflate.h new file mode 100644 index 000000000000..1d32e76edc4d --- /dev/null +++ b/drivers/crypto/cavium/zip/zip_deflate.h @@ -0,0 +1,62 @@ +/***********************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**************************************/ + +#ifndef __ZIP_DEFLATE_H__ +#define __ZIP_DEFLATE_H__ + +/** + * 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 the structure representing zip device + * + * This function prepares the zip deflate command and submits it to the zip + * engine by ringing the doorbell. + * + * Return: 0 if successful or error code + */ +int zip_deflate(struct zip_operation *zip_ops, struct zip_state *s, + struct zip_device *zip_dev); +#endif diff --git a/drivers/crypto/cavium/zip/zip_device.c b/drivers/crypto/cavium/zip/zip_device.c index e980f0894546..ccf21fb91513 100644 --- a/drivers/crypto/cavium/zip/zip_device.c +++ b/drivers/crypto/cavium/zip/zip_device.c @@ -44,6 +44,7 @@ ***********************license end**************************************/ #include "common.h" +#include "zip_deflate.h" /** * zip_cmd_queue_consumed - Calculates the space consumed in the command queue. diff --git a/drivers/crypto/cavium/zip/zip_inflate.c b/drivers/crypto/cavium/zip/zip_inflate.c new file mode 100644 index 000000000000..5f43a8cb982b --- /dev/null +++ b/drivers/crypto/cavium/zip/zip_inflate.c @@ -0,0 +1,211 @@ +/***********************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); + + /* Load inflate command to zip queue and ring the doorbell */ + queue = zip_load_instr(zip_cmd, zip_dev); + + while (!result_ptr->s.compcode) + continue; + + 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); + 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; + + 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; +} diff --git a/drivers/crypto/cavium/zip/zip_inflate.h b/drivers/crypto/cavium/zip/zip_inflate.h new file mode 100644 index 000000000000..6b20f179978e --- /dev/null +++ b/drivers/crypto/cavium/zip/zip_inflate.h @@ -0,0 +1,62 @@ +/***********************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**************************************/ + +#ifndef __ZIP_INFLATE_H__ +#define __ZIP_INFLATE_H__ + +/** + * 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 the structure representing zip device + * + * 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); +#endif diff --git a/drivers/crypto/cavium/zip/zip_main.c b/drivers/crypto/cavium/zip/zip_main.c index 89ea360d410d..dd5814a12c9a 100644 --- a/drivers/crypto/cavium/zip/zip_main.c +++ b/drivers/crypto/cavium/zip/zip_main.c @@ -339,63 +339,6 @@ static void zip_remove(struct pci_dev *pdev) zip_dev[zip->index] = NULL; } -/* Dummy Functions */ -int zip_alloc_comp_ctx_deflate(struct crypto_tfm *tfm) -{ - return 0; -} - -int zip_alloc_comp_ctx_lzs(struct crypto_tfm *tfm) -{ - return 0; -} - -void zip_free_comp_ctx(struct crypto_tfm *tfm) -{ -} - -int zip_comp_compress(struct crypto_tfm *tfm, - const u8 *src, unsigned int slen, - u8 *dst, unsigned int *dlen) -{ - return 0; -} - -int zip_comp_decompress(struct crypto_tfm *tfm, - const u8 *src, unsigned int slen, - u8 *dst, unsigned int *dlen) -{ - return 0; -} - -void *zip_alloc_scomp_ctx_deflate(struct crypto_scomp *tfm) -{ - return NULL; -} - -void *zip_alloc_scomp_ctx_lzs(struct crypto_scomp *tfm) -{ - return NULL; -} - -void zip_free_scomp_ctx(struct crypto_scomp *tfm, void *zip_ctx) -{ -} - -int zip_scomp_compress(struct crypto_scomp *tfm, - const u8 *src, unsigned int slen, - u8 *dst, unsigned int *dlen, void *ctx) -{ - return 0; -} - -int zip_scomp_decompress(struct crypto_scomp *tfm, - const u8 *src, unsigned int slen, - u8 *dst, unsigned int *dlen, void *ctx) -{ - return 0; -} - /* PCI Sub-System Interface */ static struct pci_driver zip_driver = { .name = DRV_NAME, |
