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, as |
9 | * published by the Free Software Foundation. When using or redistributing |
10 | * this file, you may do so under either license. |
11 | * |
12 | * Cavium License: Redistribution and use in source and binary forms, with |
13 | * or without modification, are permitted provided that the following |
14 | * conditions are met: |
15 | * |
16 | * * Redistributions of source code must retain the above copyright |
17 | * notice, this list of conditions and the following disclaimer. |
18 | * |
19 | * * Redistributions in binary form must reproduce the above |
20 | * copyright notice, this list of conditions and the following |
21 | * disclaimer in the documentation and/or other materials provided |
22 | * with the distribution. |
23 | * |
24 | * * Neither the name of Cavium Inc. nor the names of its contributors may be |
25 | * used to endorse or promote products derived from this software without |
26 | * specific prior written permission. |
27 | * |
28 | * This Software, including technical data, may be subject to U.S. export |
29 | * control laws, including the U.S. Export Administration Act and its |
30 | * associated regulations, and may be subject to export or import |
31 | * 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, REPRESENTATIONS |
35 | * OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH |
36 | * RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY |
37 | * REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT |
38 | * DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) |
39 | * WARRANTIES OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A |
40 | * PARTICULAR PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET |
41 | * ENJOYMENT, QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE |
42 | * ENTIRE RISK ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES |
43 | * 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 Queue |
53 | * @zip: Pointer to zip device structure |
54 | * @q: Queue number to allocate bufffer to |
55 | * Return: 0 if successful, -ENOMEM otherwise |
56 | */ |
57 | int zip_cmd_qbuf_alloc(struct zip_device *zip, int q) |
58 | { |
59 | zip->iq[q].sw_head = (u64 *)__get_free_pages(gfp_mask: (GFP_KERNEL | GFP_DMA), |
60 | order: 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 buffer |
73 | * @zip: Pointer to zip device structure |
74 | * @q: Queue number to free buffer of |
75 | */ |
76 | void 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(addr: (u64)zip->iq[q].sw_tail, order: get_order(ZIP_CMD_QBUF_SIZE)); |
81 | } |
82 | |
83 | /** |
84 | * zip_data_buf_alloc - Allocates memory for a data bufffer |
85 | * @size: Size of the buffer to allocate |
86 | * Returns: Pointer to the buffer allocated |
87 | */ |
88 | u8 *zip_data_buf_alloc(u64 size) |
89 | { |
90 | u8 *ptr; |
91 | |
92 | ptr = (u8 *)__get_free_pages(gfp_mask: (GFP_KERNEL | GFP_DMA), |
93 | order: 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 buffer |
106 | * @ptr: Pointer to the buffer |
107 | * @size: Buffer size |
108 | */ |
109 | void zip_data_buf_free(u8 *ptr, u64 size) |
110 | { |
111 | zip_dbg("Freeing data buffer 0x%lx\n" , ptr); |
112 | |
113 | free_pages(addr: (u64)ptr, order: get_order(size)); |
114 | } |
115 | |