107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
/*------------------------------------------------------------------
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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/param.h>
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#include <sys/systm.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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