Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 223 insertions, 0 deletions

diff --git a/drivers/crypto/cavium/zip/zip_inflate.c b/drivers/crypto/cavium/zip/zip_inflate.c
new file mode 100644
index 000000000..7e0d73e2f
--- /dev/null
+++ b/drivers/crypto/cavium/zip/zip_inflate.c
@@ -0,0 +1,223 @@
+/***********************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;
+}