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Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
234 lines
6.3 KiB
C
234 lines
6.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2020 Marvell International Ltd.
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*
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* Interface to the hardware Input Packet Data unit.
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*/
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#ifndef __CVMX_IPD_H__
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#define __CVMX_IPD_H__
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#include "cvmx-pki.h"
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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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typedef struct cvmx_ipd_tag_fields {
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u64 ipv6_src_ip : 1;
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u64 ipv6_dst_ip : 1;
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u64 ipv6_src_port : 1;
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u64 ipv6_dst_port : 1;
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u64 ipv6_next_header : 1;
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u64 ipv4_src_ip : 1;
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u64 ipv4_dst_ip : 1;
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u64 ipv4_src_port : 1;
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u64 ipv4_dst_port : 1;
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u64 ipv4_protocol : 1;
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u64 input_port : 1;
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} cvmx_ipd_tag_fields_t;
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typedef struct cvmx_pip_port_config {
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u64 parse_mode;
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u64 tag_type;
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u64 tag_mode;
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cvmx_ipd_tag_fields_t tag_fields;
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} cvmx_pip_port_config_t;
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typedef struct cvmx_ipd_config_struct {
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u64 first_mbuf_skip;
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u64 not_first_mbuf_skip;
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u64 ipd_enable;
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u64 enable_len_M8_fix;
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u64 cache_mode;
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cvmx_fpa_pool_config_t packet_pool;
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cvmx_fpa_pool_config_t wqe_pool;
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cvmx_pip_port_config_t port_config;
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} cvmx_ipd_config_t;
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extern cvmx_ipd_config_t cvmx_ipd_cfg;
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/**
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* Gets the fpa pool number of packet pool
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*/
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static inline s64 cvmx_fpa_get_packet_pool(void)
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{
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return (cvmx_ipd_cfg.packet_pool.pool_num);
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}
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/**
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* Gets the buffer size of packet pool buffer
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*/
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static inline u64 cvmx_fpa_get_packet_pool_block_size(void)
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{
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return (cvmx_ipd_cfg.packet_pool.buffer_size);
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}
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/**
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* Gets the buffer count of packet pool
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*/
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static inline u64 cvmx_fpa_get_packet_pool_buffer_count(void)
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{
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return (cvmx_ipd_cfg.packet_pool.buffer_count);
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}
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/**
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* Gets the fpa pool number of wqe pool
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*/
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static inline s64 cvmx_fpa_get_wqe_pool(void)
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{
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return (cvmx_ipd_cfg.wqe_pool.pool_num);
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}
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/**
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* Gets the buffer size of wqe pool buffer
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*/
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static inline u64 cvmx_fpa_get_wqe_pool_block_size(void)
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{
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return (cvmx_ipd_cfg.wqe_pool.buffer_size);
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}
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/**
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* Gets the buffer count of wqe pool
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*/
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static inline u64 cvmx_fpa_get_wqe_pool_buffer_count(void)
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{
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return (cvmx_ipd_cfg.wqe_pool.buffer_count);
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}
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/**
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* Sets the ipd related configuration in internal structure which is then used
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* for seting IPD hardware block
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*/
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int cvmx_ipd_set_config(cvmx_ipd_config_t ipd_config);
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/**
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* Gets the ipd related configuration from internal structure.
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*/
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void cvmx_ipd_get_config(cvmx_ipd_config_t *ipd_config);
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/**
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* Sets the internal FPA pool data structure for packet buffer pool.
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* @param pool fpa pool number yo use
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* @param buffer_size buffer size of pool
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* @param buffer_count number of buufers to allocate to pool
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*/
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void cvmx_ipd_set_packet_pool_config(s64 pool, u64 buffer_size, u64 buffer_count);
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/**
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* Sets the internal FPA pool data structure for wqe pool.
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* @param pool fpa pool number yo use
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* @param buffer_size buffer size of pool
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* @param buffer_count number of buufers to allocate to pool
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*/
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void cvmx_ipd_set_wqe_pool_config(s64 pool, u64 buffer_size, u64 buffer_count);
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/**
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* Gets the FPA packet buffer pool parameters.
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*/
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static inline void cvmx_fpa_get_packet_pool_config(s64 *pool, u64 *buffer_size, u64 *buffer_count)
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{
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if (pool)
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*pool = cvmx_ipd_cfg.packet_pool.pool_num;
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if (buffer_size)
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*buffer_size = cvmx_ipd_cfg.packet_pool.buffer_size;
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if (buffer_count)
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*buffer_count = cvmx_ipd_cfg.packet_pool.buffer_count;
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}
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/**
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* Sets the FPA packet buffer pool parameters.
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*/
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static inline void cvmx_fpa_set_packet_pool_config(s64 pool, u64 buffer_size, u64 buffer_count)
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{
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cvmx_ipd_set_packet_pool_config(pool, buffer_size, buffer_count);
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}
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/**
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* Gets the FPA WQE pool parameters.
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*/
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static inline void cvmx_fpa_get_wqe_pool_config(s64 *pool, u64 *buffer_size, u64 *buffer_count)
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{
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if (pool)
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*pool = cvmx_ipd_cfg.wqe_pool.pool_num;
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if (buffer_size)
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*buffer_size = cvmx_ipd_cfg.wqe_pool.buffer_size;
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if (buffer_count)
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*buffer_count = cvmx_ipd_cfg.wqe_pool.buffer_count;
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}
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/**
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* Sets the FPA WQE pool parameters.
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*/
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static inline void cvmx_fpa_set_wqe_pool_config(s64 pool, u64 buffer_size, u64 buffer_count)
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{
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cvmx_ipd_set_wqe_pool_config(pool, buffer_size, buffer_count);
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}
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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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void cvmx_ipd_config(u64 mbuff_size, u64 first_mbuff_skip, u64 not_first_mbuff_skip, u64 first_back,
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u64 second_back, u64 wqe_fpa_pool, cvmx_ipd_mode_t cache_mode,
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u64 back_pres_enable_flag);
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/**
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* Enable IPD
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*/
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void cvmx_ipd_enable(void);
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/**
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* Disable IPD
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*/
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void cvmx_ipd_disable(void);
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void __cvmx_ipd_free_ptr(void);
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void cvmx_ipd_set_packet_pool_buffer_count(u64 buffer_count);
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void cvmx_ipd_set_wqe_pool_buffer_count(u64 buffer_count);
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/**
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* Setup Random Early Drop on a specific input queue
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*
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* @param queue Input queue to setup RED on (0-7)
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* @param pass_thresh
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* Packets will begin slowly dropping when there are less than
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* this many packet buffers free in FPA 0.
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* @param drop_thresh
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* All incoming packets will be dropped when there are less
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* than this many free packet buffers in FPA 0.
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* Return: Zero on success. Negative on failure
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*/
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int cvmx_ipd_setup_red_queue(int queue, int pass_thresh, int drop_thresh);
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/**
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* Setup Random Early Drop to automatically begin dropping packets.
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*
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* @param pass_thresh
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* Packets will begin slowly dropping when there are less than
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* this many packet buffers free in FPA 0.
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* @param drop_thresh
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* All incoming packets will be dropped when there are less
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* than this many free packet buffers in FPA 0.
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* Return: Zero on success. Negative on failure
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*/
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int cvmx_ipd_setup_red(int pass_thresh, int drop_thresh);
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#endif /* __CVMX_IPD_H__ */
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