1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later
2 /*
3 * Copyright 2008 - 2015 Freescale Semiconductor Inc.
4 */
5
6 #include "fman_sp.h"
7 #include "fman.h"
8
fman_sp_set_buf_pools_in_asc_order_of_buf_sizes(struct fman_ext_pools * fm_ext_pools,u8 * ordered_array,u16 * sizes_array)9 void fman_sp_set_buf_pools_in_asc_order_of_buf_sizes(struct fman_ext_pools
10 *fm_ext_pools,
11 u8 *ordered_array,
12 u16 *sizes_array)
13 {
14 u16 buf_size = 0;
15 int i = 0, j = 0, k = 0;
16
17 /* First we copy the external buffers pools information
18 * to an ordered local array
19 */
20 for (i = 0; i < fm_ext_pools->num_of_pools_used; i++) {
21 /* get pool size */
22 buf_size = fm_ext_pools->ext_buf_pool[i].size;
23
24 /* keep sizes in an array according to poolId
25 * for direct access
26 */
27 sizes_array[fm_ext_pools->ext_buf_pool[i].id] = buf_size;
28
29 /* save poolId in an ordered array according to size */
30 for (j = 0; j <= i; j++) {
31 /* this is the next free place in the array */
32 if (j == i)
33 ordered_array[i] =
34 fm_ext_pools->ext_buf_pool[i].id;
35 else {
36 /* find the right place for this poolId */
37 if (buf_size < sizes_array[ordered_array[j]]) {
38 /* move the pool_ids one place ahead
39 * to make room for this poolId
40 */
41 for (k = i; k > j; k--)
42 ordered_array[k] =
43 ordered_array[k - 1];
44
45 /* now k==j, this is the place for
46 * the new size
47 */
48 ordered_array[k] =
49 fm_ext_pools->ext_buf_pool[i].id;
50 break;
51 }
52 }
53 }
54 }
55 }
56 EXPORT_SYMBOL(fman_sp_set_buf_pools_in_asc_order_of_buf_sizes);
57
fman_sp_build_buffer_struct(struct fman_sp_int_context_data_copy * int_context_data_copy,struct fman_buffer_prefix_content * buffer_prefix_content,struct fman_sp_buf_margins * buf_margins,struct fman_sp_buffer_offsets * buffer_offsets,u8 * internal_buf_offset)58 int fman_sp_build_buffer_struct(struct fman_sp_int_context_data_copy *
59 int_context_data_copy,
60 struct fman_buffer_prefix_content *
61 buffer_prefix_content,
62 struct fman_sp_buf_margins *buf_margins,
63 struct fman_sp_buffer_offsets *buffer_offsets,
64 u8 *internal_buf_offset)
65 {
66 u32 tmp;
67
68 /* Align start of internal context data to 16 byte */
69 int_context_data_copy->ext_buf_offset = (u16)
70 ((buffer_prefix_content->priv_data_size & (OFFSET_UNITS - 1)) ?
71 ((buffer_prefix_content->priv_data_size + OFFSET_UNITS) &
72 ~(u16)(OFFSET_UNITS - 1)) :
73 buffer_prefix_content->priv_data_size);
74
75 /* Translate margin and int_context params to FM parameters */
76 /* Initialize with illegal value. Later we'll set legal values. */
77 buffer_offsets->prs_result_offset = (u32)ILLEGAL_BASE;
78 buffer_offsets->time_stamp_offset = (u32)ILLEGAL_BASE;
79 buffer_offsets->hash_result_offset = (u32)ILLEGAL_BASE;
80
81 /* Internally the driver supports 4 options
82 * 1. prsResult/timestamp/hashResult selection (in fact 8 options,
83 * but for simplicity we'll
84 * relate to it as 1).
85 * 2. All IC context (from AD) not including debug.
86 */
87
88 /* This case covers the options under 1 */
89 /* Copy size must be in 16-byte granularity. */
90 int_context_data_copy->size =
91 (u16)((buffer_prefix_content->pass_prs_result ? 32 : 0) +
92 ((buffer_prefix_content->pass_time_stamp ||
93 buffer_prefix_content->pass_hash_result) ? 16 : 0));
94
95 /* Align start of internal context data to 16 byte */
96 int_context_data_copy->int_context_offset =
97 (u8)(buffer_prefix_content->pass_prs_result ? 32 :
98 ((buffer_prefix_content->pass_time_stamp ||
99 buffer_prefix_content->pass_hash_result) ? 64 : 0));
100
101 if (buffer_prefix_content->pass_prs_result)
102 buffer_offsets->prs_result_offset =
103 int_context_data_copy->ext_buf_offset;
104 if (buffer_prefix_content->pass_time_stamp)
105 buffer_offsets->time_stamp_offset =
106 buffer_prefix_content->pass_prs_result ?
107 (int_context_data_copy->ext_buf_offset +
108 sizeof(struct fman_prs_result)) :
109 int_context_data_copy->ext_buf_offset;
110 if (buffer_prefix_content->pass_hash_result)
111 /* If PR is not requested, whether TS is
112 * requested or not, IC will be copied from TS
113 */
114 buffer_offsets->hash_result_offset =
115 buffer_prefix_content->pass_prs_result ?
116 (int_context_data_copy->ext_buf_offset +
117 sizeof(struct fman_prs_result) + 8) :
118 int_context_data_copy->ext_buf_offset + 8;
119
120 if (int_context_data_copy->size)
121 buf_margins->start_margins =
122 (u16)(int_context_data_copy->ext_buf_offset +
123 int_context_data_copy->size);
124 else
125 /* No Internal Context passing, STartMargin is
126 * immediately after private_info
127 */
128 buf_margins->start_margins =
129 buffer_prefix_content->priv_data_size;
130
131 /* align data start */
132 tmp = (u32)(buf_margins->start_margins %
133 buffer_prefix_content->data_align);
134 if (tmp)
135 buf_margins->start_margins +=
136 (buffer_prefix_content->data_align - tmp);
137 buffer_offsets->data_offset = buf_margins->start_margins;
138
139 return 0;
140 }
141 EXPORT_SYMBOL(fman_sp_build_buffer_struct);
142
143