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1/***********************license start************************************2 * Copyright (c) 2003-2017 Cavium, Inc.3 * All rights reserved.4 *5 * License: one of 'Cavium License' or 'GNU General Public License Version 2'6 *7 * This file is provided under the terms of the Cavium License (see below)8 * or under the terms of GNU General Public License, Version 2, as9 * published by the Free Software Foundation. When using or redistributing10 * this file, you may do so under either license.11 *12 * Cavium License: Redistribution and use in source and binary forms, with13 * or without modification, are permitted provided that the following14 * conditions are met:15 *16 * * Redistributions of source code must retain the above copyright17 * notice, this list of conditions and the following disclaimer.18 *19 * * Redistributions in binary form must reproduce the above20 * copyright notice, this list of conditions and the following21 * disclaimer in the documentation and/or other materials provided22 * with the distribution.23 *24 * * Neither the name of Cavium Inc. nor the names of its contributors may be25 * used to endorse or promote products derived from this software without26 * specific prior written permission.27 *28 * This Software, including technical data, may be subject to U.S. export29 * control laws, including the U.S. Export Administration Act and its30 * associated regulations, and may be subject to export or import31 * regulations in other countries.32 *33 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"34 * AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS35 * OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH36 * RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY37 * REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT38 * DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY)39 * WARRANTIES OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A40 * PARTICULAR PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET41 * ENJOYMENT, QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE42 * ENTIRE RISK ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES43 * WITH YOU.44 ***********************license end**************************************/45 46#include <linux/types.h>47#include <linux/vmalloc.h>48 49#include "common.h"50 51/**52 * zip_cmd_qbuf_alloc - Allocates a cmd buffer for ZIP Instruction Queue53 * @zip: Pointer to zip device structure54 * @q: Queue number to allocate bufffer to55 * Return: 0 if successful, -ENOMEM otherwise56 */57int zip_cmd_qbuf_alloc(struct zip_device *zip, int q)58{59 zip->iq[q].sw_head = (u64 *)__get_free_pages((GFP_KERNEL | GFP_DMA),60 get_order(ZIP_CMD_QBUF_SIZE));61 62 if (!zip->iq[q].sw_head)63 return -ENOMEM;64 65 memset(zip->iq[q].sw_head, 0, ZIP_CMD_QBUF_SIZE);66 67 zip_dbg("cmd_qbuf_alloc[%d] Success : %p\n", q, zip->iq[q].sw_head);68 return 0;69}70 71/**72 * zip_cmd_qbuf_free - Frees the cmd Queue buffer73 * @zip: Pointer to zip device structure74 * @q: Queue number to free buffer of75 */76void zip_cmd_qbuf_free(struct zip_device *zip, int q)77{78 zip_dbg("Freeing cmd_qbuf 0x%lx\n", zip->iq[q].sw_tail);79 80 free_pages((u64)zip->iq[q].sw_tail, get_order(ZIP_CMD_QBUF_SIZE));81}82 83/**84 * zip_data_buf_alloc - Allocates memory for a data bufffer85 * @size: Size of the buffer to allocate86 * Returns: Pointer to the buffer allocated87 */88u8 *zip_data_buf_alloc(u64 size)89{90 u8 *ptr;91 92 ptr = (u8 *)__get_free_pages((GFP_KERNEL | GFP_DMA),93 get_order(size));94 95 if (!ptr)96 return NULL;97 98 memset(ptr, 0, size);99 100 zip_dbg("Data buffer allocation success\n");101 return ptr;102}103 104/**105 * zip_data_buf_free - Frees the memory of a data buffer106 * @ptr: Pointer to the buffer107 * @size: Buffer size108 */109void zip_data_buf_free(u8 *ptr, u64 size)110{111 zip_dbg("Freeing data buffer 0x%lx\n", ptr);112 113 free_pages((u64)ptr, get_order(size));114}115