/* * Driver for Marvell NETA network controller Buffer Manager. * * Copyright (C) 2015 Marvell * * Marcin Wojtas <[email protected]> * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #ifndef _MVNETA_BM_H_ #define _MVNETA_BM_H_ /* BM Configuration Register */ #define MVNETA_BM_CONFIG_REG … #define MVNETA_BM_STATUS_MASK … #define MVNETA_BM_ACTIVE_MASK … #define MVNETA_BM_MAX_IN_BURST_SIZE_MASK … #define MVNETA_BM_MAX_IN_BURST_SIZE_16BP … #define MVNETA_BM_EMPTY_LIMIT_MASK … /* BM Activation Register */ #define MVNETA_BM_COMMAND_REG … #define MVNETA_BM_START_MASK … #define MVNETA_BM_STOP_MASK … #define MVNETA_BM_PAUSE_MASK … /* BM Xbar interface Register */ #define MVNETA_BM_XBAR_01_REG … #define MVNETA_BM_XBAR_23_REG … #define MVNETA_BM_XBAR_POOL_REG(pool) … #define MVNETA_BM_TARGET_ID_OFFS(pool) … #define MVNETA_BM_TARGET_ID_MASK(pool) … #define MVNETA_BM_TARGET_ID_VAL(pool, id) … #define MVNETA_BM_XBAR_ATTR_OFFS(pool) … #define MVNETA_BM_XBAR_ATTR_MASK(pool) … #define MVNETA_BM_XBAR_ATTR_VAL(pool, attr) … /* Address of External Buffer Pointers Pool Register */ #define MVNETA_BM_POOL_BASE_REG(pool) … #define MVNETA_BM_POOL_ENABLE_MASK … /* External Buffer Pointers Pool RD pointer Register */ #define MVNETA_BM_POOL_READ_PTR_REG(pool) … #define MVNETA_BM_POOL_SET_READ_PTR_MASK … #define MVNETA_BM_POOL_GET_READ_PTR_OFFS … #define MVNETA_BM_POOL_GET_READ_PTR_MASK … /* External Buffer Pointers Pool WR pointer */ #define MVNETA_BM_POOL_WRITE_PTR_REG(pool) … #define MVNETA_BM_POOL_SET_WRITE_PTR_OFFS … #define MVNETA_BM_POOL_SET_WRITE_PTR_MASK … #define MVNETA_BM_POOL_GET_WRITE_PTR_OFFS … #define MVNETA_BM_POOL_GET_WRITE_PTR_MASK … /* External Buffer Pointers Pool Size Register */ #define MVNETA_BM_POOL_SIZE_REG(pool) … #define MVNETA_BM_POOL_SIZE_MASK … /* BM Interrupt Cause Register */ #define MVNETA_BM_INTR_CAUSE_REG … /* BM interrupt Mask Register */ #define MVNETA_BM_INTR_MASK_REG … /* Other definitions */ #define MVNETA_BM_SHORT_PKT_SIZE … #define MVNETA_BM_POOLS_NUM … #define MVNETA_BM_POOL_CAP_MIN … #define MVNETA_BM_POOL_CAP_DEF … #define MVNETA_BM_POOL_CAP_MAX … #define MVNETA_BM_POOL_CAP_ALIGN … #define MVNETA_BM_POOL_PTR_ALIGN … #define MVNETA_BM_POOL_ACCESS_OFFS … #define MVNETA_BM_BPPI_SIZE … #define MVNETA_RX_BUF_SIZE(pkt_size) … enum mvneta_bm_type { … }; struct mvneta_bm { … }; struct mvneta_bm_pool { … }; /* Declarations and definitions */ #if IS_ENABLED(CONFIG_MVNETA_BM) struct mvneta_bm *mvneta_bm_get(struct device_node *node); void mvneta_bm_put(struct mvneta_bm *priv); void mvneta_bm_pool_destroy(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, u8 port_map); void mvneta_bm_bufs_free(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, u8 port_map); int mvneta_bm_construct(struct hwbm_pool *hwbm_pool, void *buf); int mvneta_bm_pool_refill(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool); struct mvneta_bm_pool *mvneta_bm_pool_use(struct mvneta_bm *priv, u8 pool_id, enum mvneta_bm_type type, u8 port_id, int pkt_size); static inline void mvneta_bm_pool_put_bp(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, dma_addr_t buf_phys_addr) { writel_relaxed(buf_phys_addr, priv->bppi_virt_addr + (bm_pool->id << MVNETA_BM_POOL_ACCESS_OFFS)); } static inline u32 mvneta_bm_pool_get_bp(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool) { return readl_relaxed(priv->bppi_virt_addr + (bm_pool->id << MVNETA_BM_POOL_ACCESS_OFFS)); } #else static inline void mvneta_bm_pool_destroy(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, u8 port_map) { … } static inline void mvneta_bm_bufs_free(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, u8 port_map) { … } static inline int mvneta_bm_construct(struct hwbm_pool *hwbm_pool, void *buf) { … } static inline int mvneta_bm_pool_refill(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool) { … } static inline struct mvneta_bm_pool *mvneta_bm_pool_use(struct mvneta_bm *priv, u8 pool_id, enum mvneta_bm_type type, u8 port_id, int pkt_size) { … } static inline void mvneta_bm_pool_put_bp(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, dma_addr_t buf_phys_addr) { … } static inline u32 mvneta_bm_pool_get_bp(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool) { … } static inline struct mvneta_bm *mvneta_bm_get(struct device_node *node) { … } static inline void mvneta_bm_put(struct mvneta_bm *priv) { … } #endif /* CONFIG_MVNETA_BM */ #endif
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