cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/ethernet/freescale/fman/fman_sp.c

/*
 * Copyright 2008 - 2015 Freescale Semiconductor Inc.
 *
 * 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 Freescale Semiconductor nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 *
 * ALTERNATIVELY, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") as published by the Free Software
 * Foundation, either version 2 of that License or (at your option) any
 * later version.
 *
 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "fman_sp.h"
#include "fman.h"


void fman_sp_set_buf_pools_in_asc_order_of_buf_sizes(struct fman_ext_pools *fm_ext_pools, u8 *ordered_array, u16 *sizes_array) { u16 buf_size = 0; int i = 0, j = 0, k = 0; /* First we copy the external buffers pools information * to an ordered local array */ for (i = 0; i < fm_ext_pools->num_of_pools_used; i++) { /* get pool size */ buf_size = fm_ext_pools->ext_buf_pool[i].size; /* keep sizes in an array according to poolId * for direct access */ sizes_array[fm_ext_pools->ext_buf_pool[i].id] = buf_size; /* save poolId in an ordered array according to size */ for (j = 0; j <= i; j++) { /* this is the next free place in the array */ if (j == i) ordered_array[i] = fm_ext_pools->ext_buf_pool[i].id; else { /* find the right place for this poolId */ if (buf_size < sizes_array[ordered_array[j]]) { /* move the pool_ids one place ahead * to make room for this poolId */ for (k = i; k > j; k--) ordered_array[k] = ordered_array[k - 1]; /* now k==j, this is the place for * the new size */ ordered_array[k] = fm_ext_pools->ext_buf_pool[i].id; break; } } } } }

Contributors

PersonTokensPropCommitsCommitProp
Igal Liberman178100.00%1100.00%
Total178100.00%1100.00%

EXPORT_SYMBOL(fman_sp_set_buf_pools_in_asc_order_of_buf_sizes);
int 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) { u32 tmp; /* Align start of internal context data to 16 byte */ int_context_data_copy->ext_buf_offset = (u16) ((buffer_prefix_content->priv_data_size & (OFFSET_UNITS - 1)) ? ((buffer_prefix_content->priv_data_size + OFFSET_UNITS) & ~(u16)(OFFSET_UNITS - 1)) : buffer_prefix_content->priv_data_size); /* Translate margin and int_context params to FM parameters */ /* Initialize with illegal value. Later we'll set legal values. */ buffer_offsets->prs_result_offset = (u32)ILLEGAL_BASE; buffer_offsets->time_stamp_offset = (u32)ILLEGAL_BASE; buffer_offsets->hash_result_offset = (u32)ILLEGAL_BASE; /* Internally the driver supports 4 options * 1. prsResult/timestamp/hashResult selection (in fact 8 options, * but for simplicity we'll * relate to it as 1). * 2. All IC context (from AD) not including debug. */ /* This case covers the options under 1 */ /* Copy size must be in 16-byte granularity. */ int_context_data_copy->size = (u16)((buffer_prefix_content->pass_prs_result ? 32 : 0) + ((buffer_prefix_content->pass_time_stamp || buffer_prefix_content->pass_hash_result) ? 16 : 0)); /* Align start of internal context data to 16 byte */ int_context_data_copy->int_context_offset = (u8)(buffer_prefix_content->pass_prs_result ? 32 : ((buffer_prefix_content->pass_time_stamp || buffer_prefix_content->pass_hash_result) ? 64 : 0)); if (buffer_prefix_content->pass_prs_result) buffer_offsets->prs_result_offset = int_context_data_copy->ext_buf_offset; if (buffer_prefix_content->pass_time_stamp) buffer_offsets->time_stamp_offset = buffer_prefix_content->pass_prs_result ? (int_context_data_copy->ext_buf_offset + sizeof(struct fman_prs_result)) : int_context_data_copy->ext_buf_offset; if (buffer_prefix_content->pass_hash_result) /* If PR is not requested, whether TS is * requested or not, IC will be copied from TS */ buffer_offsets->hash_result_offset = buffer_prefix_content->pass_prs_result ? (int_context_data_copy->ext_buf_offset + sizeof(struct fman_prs_result) + 8) : int_context_data_copy->ext_buf_offset + 8; if (int_context_data_copy->size) buf_margins->start_margins = (u16)(int_context_data_copy->ext_buf_offset + int_context_data_copy->size); else /* No Internal Context passing, STartMargin is * immediately after private_info */ buf_margins->start_margins = buffer_prefix_content->priv_data_size; /* align data start */ tmp = (u32)(buf_margins->start_margins % buffer_prefix_content->data_align); if (tmp) buf_margins->start_margins += (buffer_prefix_content->data_align - tmp); buffer_offsets->data_offset = buf_margins->start_margins; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Igal Liberman332100.00%1100.00%
Total332100.00%1100.00%

EXPORT_SYMBOL(fman_sp_build_buffer_struct);

Overall Contributors

PersonTokensPropCommitsCommitProp
Igal Liberman527100.00%2100.00%
Total527100.00%2100.00%
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