Adding upstream version 4.19.249.upstream/4.19.249upstream

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

1 files changed, 200 insertions, 0 deletions

diff --git a/drivers/crypto/cavium/zip/zip_deflate.c b/drivers/crypto/cavium/zip/zip_deflate.c
new file mode 100644
index 000000000..d7133f857
--- /dev/null
+++ b/drivers/crypto/cavium/zip/zip_deflate.c
@@ -0,0 +1,200 @@
+/***********************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;
+}