/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 2020 Marvell International Ltd. * * Interface to the hardware Input Packet Data unit. */ #ifndef __CVMX_IPD_H__ #define __CVMX_IPD_H__ #include "cvmx-pki.h" /* CSR typedefs have been moved to cvmx-ipd-defs.h */ typedef cvmx_ipd_1st_mbuff_skip_t cvmx_ipd_mbuff_not_first_skip_t; typedef cvmx_ipd_1st_next_ptr_back_t cvmx_ipd_second_next_ptr_back_t; typedef struct cvmx_ipd_tag_fields { u64 ipv6_src_ip : 1; u64 ipv6_dst_ip : 1; u64 ipv6_src_port : 1; u64 ipv6_dst_port : 1; u64 ipv6_next_header : 1; u64 ipv4_src_ip : 1; u64 ipv4_dst_ip : 1; u64 ipv4_src_port : 1; u64 ipv4_dst_port : 1; u64 ipv4_protocol : 1; u64 input_port : 1; } cvmx_ipd_tag_fields_t; typedef struct cvmx_pip_port_config { u64 parse_mode; u64 tag_type; u64 tag_mode; cvmx_ipd_tag_fields_t tag_fields; } cvmx_pip_port_config_t; typedef struct cvmx_ipd_config_struct { u64 first_mbuf_skip; u64 not_first_mbuf_skip; u64 ipd_enable; u64 enable_len_M8_fix; u64 cache_mode; cvmx_fpa_pool_config_t packet_pool; cvmx_fpa_pool_config_t wqe_pool; cvmx_pip_port_config_t port_config; } cvmx_ipd_config_t; extern cvmx_ipd_config_t cvmx_ipd_cfg; /** * Gets the fpa pool number of packet pool */ static inline s64 cvmx_fpa_get_packet_pool(void) { return (cvmx_ipd_cfg.packet_pool.pool_num); } /** * Gets the buffer size of packet pool buffer */ static inline u64 cvmx_fpa_get_packet_pool_block_size(void) { return (cvmx_ipd_cfg.packet_pool.buffer_size); } /** * Gets the buffer count of packet pool */ static inline u64 cvmx_fpa_get_packet_pool_buffer_count(void) { return (cvmx_ipd_cfg.packet_pool.buffer_count); } /** * Gets the fpa pool number of wqe pool */ static inline s64 cvmx_fpa_get_wqe_pool(void) { return (cvmx_ipd_cfg.wqe_pool.pool_num); } /** * Gets the buffer size of wqe pool buffer */ static inline u64 cvmx_fpa_get_wqe_pool_block_size(void) { return (cvmx_ipd_cfg.wqe_pool.buffer_size); } /** * Gets the buffer count of wqe pool */ static inline u64 cvmx_fpa_get_wqe_pool_buffer_count(void) { return (cvmx_ipd_cfg.wqe_pool.buffer_count); } /** * Sets the ipd related configuration in internal structure which is then used * for seting IPD hardware block */ int cvmx_ipd_set_config(cvmx_ipd_config_t ipd_config); /** * Gets the ipd related configuration from internal structure. */ void cvmx_ipd_get_config(cvmx_ipd_config_t *ipd_config); /** * Sets the internal FPA pool data structure for packet buffer pool. * @param pool fpa pool number yo use * @param buffer_size buffer size of pool * @param buffer_count number of buufers to allocate to pool */ void cvmx_ipd_set_packet_pool_config(s64 pool, u64 buffer_size, u64 buffer_count); /** * Sets the internal FPA pool data structure for wqe pool. * @param pool fpa pool number yo use * @param buffer_size buffer size of pool * @param buffer_count number of buufers to allocate to pool */ void cvmx_ipd_set_wqe_pool_config(s64 pool, u64 buffer_size, u64 buffer_count); /** * Gets the FPA packet buffer pool parameters. */ static inline void cvmx_fpa_get_packet_pool_config(s64 *pool, u64 *buffer_size, u64 *buffer_count) { if (pool) *pool = cvmx_ipd_cfg.packet_pool.pool_num; if (buffer_size) *buffer_size = cvmx_ipd_cfg.packet_pool.buffer_size; if (buffer_count) *buffer_count = cvmx_ipd_cfg.packet_pool.buffer_count; } /** * Sets the FPA packet buffer pool parameters. */ static inline void cvmx_fpa_set_packet_pool_config(s64 pool, u64 buffer_size, u64 buffer_count) { cvmx_ipd_set_packet_pool_config(pool, buffer_size, buffer_count); } /** * Gets the FPA WQE pool parameters. */ static inline void cvmx_fpa_get_wqe_pool_config(s64 *pool, u64 *buffer_size, u64 *buffer_count) { if (pool) *pool = cvmx_ipd_cfg.wqe_pool.pool_num; if (buffer_size) *buffer_size = cvmx_ipd_cfg.wqe_pool.buffer_size; if (buffer_count) *buffer_count = cvmx_ipd_cfg.wqe_pool.buffer_count; } /** * Sets the FPA WQE pool parameters. */ static inline void cvmx_fpa_set_wqe_pool_config(s64 pool, u64 buffer_size, u64 buffer_count) { cvmx_ipd_set_wqe_pool_config(pool, buffer_size, buffer_count); } /** * Configure IPD * * @param mbuff_size Packets buffer size in 8 byte words * @param first_mbuff_skip * Number of 8 byte words to skip in the first buffer * @param not_first_mbuff_skip * Number of 8 byte words to skip in each following buffer * @param first_back Must be same as first_mbuff_skip / 128 * @param second_back * Must be same as not_first_mbuff_skip / 128 * @param wqe_fpa_pool * FPA pool to get work entries from * @param cache_mode * @param back_pres_enable_flag * Enable or disable port back pressure at a global level. * This should always be 1 as more accurate control can be * found in IPD_PORTX_BP_PAGE_CNT[BP_ENB]. */ void cvmx_ipd_config(u64 mbuff_size, u64 first_mbuff_skip, u64 not_first_mbuff_skip, u64 first_back, u64 second_back, u64 wqe_fpa_pool, cvmx_ipd_mode_t cache_mode, u64 back_pres_enable_flag); /** * Enable IPD */ void cvmx_ipd_enable(void); /** * Disable IPD */ void cvmx_ipd_disable(void); void __cvmx_ipd_free_ptr(void); void cvmx_ipd_set_packet_pool_buffer_count(u64 buffer_count); void cvmx_ipd_set_wqe_pool_buffer_count(u64 buffer_count); /** * Setup Random Early Drop on a specific input queue * * @param queue Input queue to setup RED on (0-7) * @param pass_thresh * Packets will begin slowly dropping when there are less than * this many packet buffers free in FPA 0. * @param drop_thresh * All incoming packets will be dropped when there are less * than this many free packet buffers in FPA 0. * @return Zero on success. Negative on failure */ int cvmx_ipd_setup_red_queue(int queue, int pass_thresh, int drop_thresh); /** * Setup Random Early Drop to automatically begin dropping packets. * * @param pass_thresh * Packets will begin slowly dropping when there are less than * this many packet buffers free in FPA 0. * @param drop_thresh * All incoming packets will be dropped when there are less * than this many free packet buffers in FPA 0. * @return Zero on success. Negative on failure */ int cvmx_ipd_setup_red(int pass_thresh, int drop_thresh); #endif /* __CVMX_IPD_H__ */