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
9void 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}
56EXPORT_SYMBOL(fman_sp_set_buf_pools_in_asc_order_of_buf_sizes);
57
58int 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}
141EXPORT_SYMBOL(fman_sp_build_buffer_struct);
142
143