204 lines
6.3 KiB
C
204 lines
6.3 KiB
C
/***********************license start***************
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* Copyright (c) 2003-2010 Cavium Inc. (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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* * Neither the name of Cavium Inc. 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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* This Software, including technical data, may be subject to U.S. export control
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* laws, including the U.S. Export Administration Act and its associated
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* regulations, and may be subject to export or import regulations in other
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* countries.
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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 INC. MAKES NO PROMISES, REPRESENTATIONS OR
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* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
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* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
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* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
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* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
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* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
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* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
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* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
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* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
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***********************license end**************************************/
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/**
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* @file
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*
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* Interface to the hardware Input Packet Data unit.
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*
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* <hr>$Revision: 70030 $<hr>
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*/
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#ifndef __CVMX_IPD_H__
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#define __CVMX_IPD_H__
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#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
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#include <asm/octeon/cvmx.h>
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#include <asm/octeon/cvmx-config.h>
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#include <asm/octeon/cvmx-ipd-defs.h>
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#else
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# ifndef CVMX_DONT_INCLUDE_CONFIG
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# include "executive-config.h"
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# ifdef CVMX_ENABLE_PKO_FUNCTIONS
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# include "cvmx-config.h"
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# endif
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# endif
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef CVMX_ENABLE_LEN_M8_FIX
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#define CVMX_ENABLE_LEN_M8_FIX 0
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#endif
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/* CSR typedefs have been moved to cvmx-ipd-defs.h */
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typedef cvmx_ipd_1st_mbuff_skip_t cvmx_ipd_mbuff_not_first_skip_t;
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typedef cvmx_ipd_1st_next_ptr_back_t cvmx_ipd_second_next_ptr_back_t;
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/**
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* Configure IPD
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*
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* @param mbuff_size Packets buffer size in 8 byte words
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* @param first_mbuff_skip
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* Number of 8 byte words to skip in the first buffer
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* @param not_first_mbuff_skip
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* Number of 8 byte words to skip in each following buffer
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* @param first_back Must be same as first_mbuff_skip / 128
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* @param second_back
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* Must be same as not_first_mbuff_skip / 128
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* @param wqe_fpa_pool
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* FPA pool to get work entries from
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* @param cache_mode
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* @param back_pres_enable_flag
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* Enable or disable port back pressure at a global level.
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* This should always be 1 as more accurate control can be
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* found in IPD_PORTX_BP_PAGE_CNT[BP_ENB].
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*/
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static inline void cvmx_ipd_config(uint64_t mbuff_size,
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uint64_t first_mbuff_skip,
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uint64_t not_first_mbuff_skip,
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uint64_t first_back,
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uint64_t second_back,
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uint64_t wqe_fpa_pool,
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cvmx_ipd_mode_t cache_mode,
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uint64_t back_pres_enable_flag
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)
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{
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cvmx_ipd_1st_mbuff_skip_t first_skip;
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cvmx_ipd_mbuff_not_first_skip_t not_first_skip;
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cvmx_ipd_packet_mbuff_size_t size;
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cvmx_ipd_1st_next_ptr_back_t first_back_struct;
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cvmx_ipd_second_next_ptr_back_t second_back_struct;
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cvmx_ipd_wqe_fpa_queue_t wqe_pool;
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cvmx_ipd_ctl_status_t ipd_ctl_reg;
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first_skip.u64 = 0;
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first_skip.s.skip_sz = first_mbuff_skip;
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cvmx_write_csr(CVMX_IPD_1ST_MBUFF_SKIP, first_skip.u64);
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not_first_skip.u64 = 0;
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not_first_skip.s.skip_sz = not_first_mbuff_skip;
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cvmx_write_csr(CVMX_IPD_NOT_1ST_MBUFF_SKIP, not_first_skip.u64);
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size.u64 = 0;
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size.s.mb_size = mbuff_size;
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cvmx_write_csr(CVMX_IPD_PACKET_MBUFF_SIZE, size.u64);
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first_back_struct.u64 = 0;
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first_back_struct.s.back = first_back;
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cvmx_write_csr(CVMX_IPD_1st_NEXT_PTR_BACK, first_back_struct.u64);
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second_back_struct.u64 = 0;
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second_back_struct.s.back = second_back;
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cvmx_write_csr(CVMX_IPD_2nd_NEXT_PTR_BACK,second_back_struct.u64);
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wqe_pool.u64 = 0;
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wqe_pool.s.wqe_pool = wqe_fpa_pool;
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cvmx_write_csr(CVMX_IPD_WQE_FPA_QUEUE, wqe_pool.u64);
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ipd_ctl_reg.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS);
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ipd_ctl_reg.s.opc_mode = cache_mode;
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ipd_ctl_reg.s.pbp_en = back_pres_enable_flag;
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cvmx_write_csr(CVMX_IPD_CTL_STATUS, ipd_ctl_reg.u64);
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/* Note: the example RED code that used to be here has been moved to
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cvmx_helper_setup_red */
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}
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/**
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* Enable IPD
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*/
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static inline void cvmx_ipd_enable(void)
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{
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cvmx_ipd_ctl_status_t ipd_reg;
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ipd_reg.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS);
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/*
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* busy-waiting for rst_done in o68
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*/
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if (OCTEON_IS_MODEL(OCTEON_CN68XX))
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while(ipd_reg.s.rst_done != 0)
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ipd_reg.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS);
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if (ipd_reg.s.ipd_en)
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cvmx_dprintf("Warning: Enabling IPD when IPD already enabled.\n");
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ipd_reg.s.ipd_en = 1;
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#if CVMX_ENABLE_LEN_M8_FIX
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if(!OCTEON_IS_MODEL(OCTEON_CN38XX_PASS2))
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ipd_reg.s.len_m8 = 1;
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#endif
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cvmx_write_csr(CVMX_IPD_CTL_STATUS, ipd_reg.u64);
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}
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/**
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* Disable IPD
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*/
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static inline void cvmx_ipd_disable(void)
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{
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cvmx_ipd_ctl_status_t ipd_reg;
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ipd_reg.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS);
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ipd_reg.s.ipd_en = 0;
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cvmx_write_csr(CVMX_IPD_CTL_STATUS, ipd_reg.u64);
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}
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extern void __cvmx_ipd_free_ptr(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __CVMX_IPD_H__ */
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