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crypto: zip - Wire-up Compression / decompression HW offload

Browse Source 
This contains changes for adding compression/decompression h/w offload
functionality for both DEFLATE and LZS.

Signed-off-by: Mahipal Challa <Mahipal.Challa@cavium.com>
Signed-off-by: Jan Glauber <jglauber@cavium.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Mahipal Challa 2017-02-15 10:45:09 +05:30 committed by Herbert Xu
parent 640035a2dc
commit f05845fcba
9 changed files with 845 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/crypto/cavium/zip/Makefile
View File

@ -5,4 +5,7 @@
obj-$(CONFIG_CRYPTO_DEV_CAVIUM_ZIP) += thunderx_zip.o obj-$(CONFIG_CRYPTO_DEV_CAVIUM_ZIP) += thunderx_zip.o
thunderx_zip-y := zip_main.o \ thunderx_zip-y := zip_main.o \
zip_device.o \ zip_device.o \
zip_mem.o zip_crypto.o \
zip_mem.o \
zip_deflate.o \
zip_inflate.o

313
drivers/crypto/cavium/zip/zip_crypto.c Normal file
View File

@ -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 */

2
drivers/crypto/cavium/zip/zip_crypto.h
View File

@ -49,6 +49,8 @@
#include <linux/crypto.h> #include <linux/crypto.h>
#include <crypto/internal/scompress.h> #include <crypto/internal/scompress.h>
#include "common.h" #include "common.h"
#include "zip_deflate.h"
#include "zip_inflate.h"
struct zip_kernel_ctx { struct zip_kernel_ctx {
struct zip_operation zip_comp; struct zip_operation zip_comp;

190
drivers/crypto/cavium/zip/zip_deflate.c Normal file
View File

@ -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;
}

62
drivers/crypto/cavium/zip/zip_deflate.h Normal file
View File

@ -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

1
drivers/crypto/cavium/zip/zip_device.c
View File

@ -44,6 +44,7 @@
***********************license end**************************************/ ***********************license end**************************************/
#include "common.h" #include "common.h"
#include "zip_deflate.h"
/** /**
* zip_cmd_queue_consumed - Calculates the space consumed in the command queue. * zip_cmd_queue_consumed - Calculates the space consumed in the command queue.

211
drivers/crypto/cavium/zip/zip_inflate.c Normal file
View File

@ -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;
}

62
drivers/crypto/cavium/zip/zip_inflate.h Normal file
View File

@ -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

57
drivers/crypto/cavium/zip/zip_main.c
View File

@ -339,63 +339,6 @@ static void zip_remove(struct pci_dev *pdev)
zip_dev[zip->index] = NULL; 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 */ /* PCI Sub-System Interface */
static struct pci_driver zip_driver = { static struct pci_driver zip_driver = {
.name = DRV_NAME, .name = DRV_NAME,