fe36702132
lacking a copyright/license statement. All these files were in the Cavium FreeBSD source drop and appear to be written by Cavium (some are nearly verbatim copies of files from the cnusers' 1.9.0 SDK, which also uses this copyright).
149 lines
5.1 KiB
C
149 lines
5.1 KiB
C
/***********************license start***************
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* Copyright (c) 2003-2008 Cavium Networks (support@cavium.com). All rights
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* reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* * Neither the name of Cavium Networks nor the names of
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* its contributors may be used to endorse or promote products
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* derived from this software without specific prior written
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* permission.
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*
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* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
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* AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS
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* OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH
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* RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
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* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
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* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
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* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
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* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET
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* POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT
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* OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
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*
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*
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* For any questions regarding licensing please contact marketing@caviumnetworks.com
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*
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***********************license end**************************************/
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/*------------------------------------------------------------------
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* octeon_ipd.c Input Packet Unit
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*
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*------------------------------------------------------------------
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <mips/cavium/octeon_pcmap_regs.h>
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#include "octeon_ipd.h"
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/*
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* octeon_ipd_enable
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*
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* enable ipd
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*/
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void octeon_ipd_enable (void)
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{
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octeon_ipd_ctl_status_t octeon_ipd_reg;
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octeon_ipd_reg.word64 = oct_read64(OCTEON_IPD_CTL_STATUS);
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octeon_ipd_reg.bits.ipd_en = 1;
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oct_write64(OCTEON_IPD_CTL_STATUS, octeon_ipd_reg.word64);
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}
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/*
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* octeon_ipd_disable
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*
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* disable ipd
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*/
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void octeon_ipd_disable (void)
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{
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octeon_ipd_ctl_status_t octeon_ipd_reg;
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octeon_ipd_reg.word64 = oct_read64(OCTEON_IPD_CTL_STATUS);
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octeon_ipd_reg.bits.ipd_en = 0;
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oct_write64(OCTEON_IPD_CTL_STATUS, octeon_ipd_reg.word64);
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}
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/*
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* octeon_ipd_config
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*
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* Configure IPD
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*
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* mbuff_size Packets buffer size in 8 byte words
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* first_mbuff_skip
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* Number of 8 byte words to skip in the first buffer
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* not_first_mbuff_skip
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* Number of 8 byte words to skip in each following buffer
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* first_back Must be same as first_mbuff_skip / Cache_Line_size
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* second_back
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* Must be same as not_first_mbuff_skip / Cache_Line_Size
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* wqe_fpa_pool
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* FPA pool to get work entries from
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* cache_mode
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* back_pres_enable_flag
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* Enable or disable port back pressure
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*/
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void octeon_ipd_config (u_int mbuff_size,
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u_int first_mbuff_skip,
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u_int not_first_mbuff_skip,
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u_int first_back,
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u_int second_back,
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u_int wqe_fpa_pool,
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octeon_ipd_mode_t cache_mode,
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u_int back_pres_enable_flag)
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{
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octeon_ipd_mbuff_first_skip_t first_skip;
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octeon_ipd_mbuff_not_first_skip_t not_first_skip;
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octeon_ipd_mbuff_size_t size;
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octeon_ipd_first_next_ptr_back_t first_back_struct;
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octeon_ipd_second_next_ptr_back_t second_back_struct;
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octeon_ipd_wqe_fpa_pool_t wqe_pool;
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octeon_ipd_ctl_status_t octeon_ipd_ctl_reg;
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first_skip.word64 = 0;
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first_skip.bits.skip_sz = first_mbuff_skip;
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oct_write64(OCTEON_IPD_1ST_MBUFF_SKIP, first_skip.word64);
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not_first_skip.word64 = 0;
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not_first_skip.bits.skip_sz = not_first_mbuff_skip;
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oct_write64(OCTEON_IPD_NOT_1ST_MBUFF_SKIP, not_first_skip.word64);
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size.word64 = 0;
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size.bits.mb_size = mbuff_size;
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oct_write64(OCTEON_IPD_PACKET_MBUFF_SIZE, size.word64);
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first_back_struct.word64 = 0;
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first_back_struct.bits.back = first_back;
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oct_write64(OCTEON_IPD_1ST_NEXT_PTR_BACK, first_back_struct.word64);
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second_back_struct.word64 = 0;
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second_back_struct.bits.back = second_back;
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oct_write64(OCTEON_IPD_2ND_NEXT_PTR_BACK, second_back_struct.word64);
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wqe_pool.word64 = 0;
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wqe_pool.bits.wqe_pool = wqe_fpa_pool;
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oct_write64(OCTEON_IPD_WQE_FPA_QUEUE, wqe_pool.word64);
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octeon_ipd_ctl_reg.word64 = 0;
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octeon_ipd_ctl_reg.bits.opc_mode = cache_mode;
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octeon_ipd_ctl_reg.bits.pbp_en = back_pres_enable_flag;
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oct_write64(OCTEON_IPD_CTL_STATUS, octeon_ipd_ctl_reg.word64);
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}
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