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dpaa2-fd.h
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/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */ /* * Copyright 2014-2016 Freescale Semiconductor Inc. * Copyright 2016 NXP * */ #ifndef __FSL_DPAA2_FD_H #define __FSL_DPAA2_FD_H #include <linux/kernel.h> /** * DOC: DPAA2 FD - Frame Descriptor APIs for DPAA2 * * Frame Descriptors (FDs) are used to describe frame data in the DPAA2. * Frames can be enqueued and dequeued to Frame Queues (FQs) which are consumed * by the various DPAA accelerators (WRIOP, SEC, PME, DCE) * * There are three types of frames: single, scatter gather, and frame lists. * * The set of APIs in this file must be used to create, manipulate and * query Frame Descriptors. */ /** * struct dpaa2_fd - Struct describing FDs * @words: for easier/faster copying the whole FD structure * @addr: address in the FD * @len: length in the FD * @bpid: buffer pool ID * @format_offset: format, offset, and short-length fields * @frc: frame context * @ctrl: control bits...including dd, sc, va, err, etc * @flc: flow context address * * This structure represents the basic Frame Descriptor used in the system. */ struct dpaa2_fd { union { u32 words[8]; struct dpaa2_fd_simple { __le64 addr; __le32 len; __le16 bpid; __le16 format_offset; __le32 frc; __le32 ctrl; __le64 flc; } simple; }; }; #define FD_SHORT_LEN_FLAG_MASK 0x1 #define FD_SHORT_LEN_FLAG_SHIFT 14 #define FD_SHORT_LEN_MASK 0x3FFFF #define FD_OFFSET_MASK 0x0FFF #define FD_FORMAT_MASK 0x3 #define FD_FORMAT_SHIFT 12 #define FD_BPID_MASK 0x3FFF #define SG_SHORT_LEN_FLAG_MASK 0x1 #define SG_SHORT_LEN_FLAG_SHIFT 14 #define SG_SHORT_LEN_MASK 0x1FFFF #define SG_OFFSET_MASK 0x0FFF #define SG_FORMAT_MASK 0x3 #define SG_FORMAT_SHIFT 12 #define SG_BPID_MASK 0x3FFF #define SG_FINAL_FLAG_MASK 0x1 #define SG_FINAL_FLAG_SHIFT 15 #define FL_SHORT_LEN_FLAG_MASK 0x1 #define FL_SHORT_LEN_FLAG_SHIFT 14 #define FL_SHORT_LEN_MASK 0x3FFFF #define FL_OFFSET_MASK 0x0FFF #define FL_FORMAT_MASK 0x3 #define FL_FORMAT_SHIFT 12 #define FL_BPID_MASK 0x3FFF #define FL_FINAL_FLAG_MASK 0x1 #define FL_FINAL_FLAG_SHIFT 15 /* Error bits in FD CTRL */ #define FD_CTRL_ERR_MASK 0x000000FF #define FD_CTRL_UFD 0x00000004 #define FD_CTRL_SBE 0x00000008 #define FD_CTRL_FLC 0x00000010 #define FD_CTRL_FSE 0x00000020 #define FD_CTRL_FAERR 0x00000040 /* Annotation bits in FD CTRL */ #define FD_CTRL_PTA 0x00800000 #define FD_CTRL_PTV1 0x00400000 enum dpaa2_fd_format { dpaa2_fd_single = 0, dpaa2_fd_list, dpaa2_fd_sg }; /** * dpaa2_fd_get_addr() - get the addr field of frame descriptor * @fd: the given frame descriptor * * Return the address in the frame descriptor. */ static inline dma_addr_t dpaa2_fd_get_addr(const struct dpaa2_fd *fd) { return (dma_addr_t)le64_to_cpu(fd->simple.addr); } /** * dpaa2_fd_set_addr() - Set the addr field of frame descriptor * @fd: the given frame descriptor * @addr: the address needs to be set in frame descriptor */ static inline void dpaa2_fd_set_addr(struct dpaa2_fd *fd, dma_addr_t addr) { fd->simple.addr = cpu_to_le64(addr); } /** * dpaa2_fd_get_frc() - Get the frame context in the frame descriptor * @fd: the given frame descriptor * * Return the frame context field in the frame descriptor. */ static inline u32 dpaa2_fd_get_frc(const struct dpaa2_fd *fd) { return le32_to_cpu(fd->simple.frc); } /** * dpaa2_fd_set_frc() - Set the frame context in the frame descriptor * @fd: the given frame descriptor * @frc: the frame context needs to be set in frame descriptor */ static inline void dpaa2_fd_set_frc(struct dpaa2_fd *fd, u32 frc) { fd->simple.frc = cpu_to_le32(frc); } /** * dpaa2_fd_get_ctrl() - Get the control bits in the frame descriptor * @fd: the given frame descriptor * * Return the control bits field in the frame descriptor. */ static inline u32 dpaa2_fd_get_ctrl(const struct dpaa2_fd *fd) { return le32_to_cpu(fd->simple.ctrl); } /** * dpaa2_fd_set_ctrl() - Set the control bits in the frame descriptor * @fd: the given frame descriptor * @ctrl: the control bits to be set in the frame descriptor */ static inline void dpaa2_fd_set_ctrl(struct dpaa2_fd *fd, u32 ctrl) { fd->simple.ctrl = cpu_to_le32(ctrl); } /** * dpaa2_fd_get_flc() - Get the flow context in the frame descriptor * @fd: the given frame descriptor * * Return the flow context in the frame descriptor. */ static inline dma_addr_t dpaa2_fd_get_flc(const struct dpaa2_fd *fd) { return (dma_addr_t)le64_to_cpu(fd->simple.flc); } /** * dpaa2_fd_set_flc() - Set the flow context field of frame descriptor * @fd: the given frame descriptor * @flc_addr: the flow context needs to be set in frame descriptor */ static inline void dpaa2_fd_set_flc(struct dpaa2_fd *fd, dma_addr_t flc_addr) { fd->simple.flc = cpu_to_le64(flc_addr); } static inline bool dpaa2_fd_short_len(const struct dpaa2_fd *fd) { return !!((le16_to_cpu(fd->simple.format_offset) >> FD_SHORT_LEN_FLAG_SHIFT) & FD_SHORT_LEN_FLAG_MASK); } /** * dpaa2_fd_get_len() - Get the length in the frame descriptor * @fd: the given frame descriptor * * Return the length field in the frame descriptor. */ static inline u32 dpaa2_fd_get_len(const struct dpaa2_fd *fd) { if (dpaa2_fd_short_len(fd)) return le32_to_cpu(fd->simple.len) & FD_SHORT_LEN_MASK; return le32_to_cpu(fd->simple.len); } /** * dpaa2_fd_set_len() - Set the length field of frame descriptor * @fd: the given frame descriptor * @len: the length needs to be set in frame descriptor */ static inline void dpaa2_fd_set_len(struct dpaa2_fd *fd, u32 len) { fd->simple.len = cpu_to_le32(len); } /** * dpaa2_fd_get_offset() - Get the offset field in the frame descriptor * @fd: the given frame descriptor * * Return the offset. */ static inline uint16_t dpaa2_fd_get_offset(const struct dpaa2_fd *fd) { return le16_to_cpu(fd->simple.format_offset) & FD_OFFSET_MASK; } /** * dpaa2_fd_set_offset() - Set the offset field of frame descriptor * @fd: the given frame descriptor * @offset: the offset needs to be set in frame descriptor */ static inline void dpaa2_fd_set_offset(struct dpaa2_fd *fd, uint16_t offset) { fd->simple.format_offset &= cpu_to_le16(~FD_OFFSET_MASK); fd->simple.format_offset |= cpu_to_le16(offset); } /** * dpaa2_fd_get_format() - Get the format field in the frame descriptor * @fd: the given frame descriptor * * Return the format. */ static inline enum dpaa2_fd_format dpaa2_fd_get_format( const struct dpaa2_fd *fd) { return (enum dpaa2_fd_format)((le16_to_cpu(fd->simple.format_offset) >> FD_FORMAT_SHIFT) & FD_FORMAT_MASK); } /** * dpaa2_fd_set_format() - Set the format field of frame descriptor * @fd: the given frame descriptor * @format: the format needs to be set in frame descriptor */ static inline void dpaa2_fd_set_format(struct dpaa2_fd *fd, enum dpaa2_fd_format format) { fd->simple.format_offset &= cpu_to_le16(~(FD_FORMAT_MASK << FD_FORMAT_SHIFT)); fd->simple.format_offset |= cpu_to_le16(format << FD_FORMAT_SHIFT); } /** * dpaa2_fd_get_bpid() - Get the bpid field in the frame descriptor * @fd: the given frame descriptor * * Return the buffer pool id. */ static inline uint16_t dpaa2_fd_get_bpid(const struct dpaa2_fd *fd) { return le16_to_cpu(fd->simple.bpid) & FD_BPID_MASK; } /** * dpaa2_fd_set_bpid() - Set the bpid field of frame descriptor * @fd: the given frame descriptor * @bpid: buffer pool id to be set */ static inline void dpaa2_fd_set_bpid(struct dpaa2_fd *fd, uint16_t bpid) { fd->simple.bpid &= cpu_to_le16(~(FD_BPID_MASK)); fd->simple.bpid |= cpu_to_le16(bpid); } /** * struct dpaa2_sg_entry - the scatter-gathering structure * @addr: address of the sg entry * @len: length in this sg entry * @bpid: buffer pool id * @format_offset: format and offset fields */ struct dpaa2_sg_entry { __le64 addr; __le32 len; __le16 bpid; __le16 format_offset; }; enum dpaa2_sg_format { dpaa2_sg_single = 0, dpaa2_sg_frame_data, dpaa2_sg_sgt_ext }; /* Accessors for SG entry fields */ /** * dpaa2_sg_get_addr() - Get the address from SG entry * @sg: the given scatter-gathering object * * Return the address. */ static inline dma_addr_t dpaa2_sg_get_addr(const struct dpaa2_sg_entry *sg) { return (dma_addr_t)le64_to_cpu(sg->addr); } /** * dpaa2_sg_set_addr() - Set the address in SG entry * @sg: the given scatter-gathering object * @addr: the address to be set */ static inline void dpaa2_sg_set_addr(struct dpaa2_sg_entry *sg, dma_addr_t addr) { sg->addr = cpu_to_le64(addr); } static inline bool dpaa2_sg_short_len(const struct dpaa2_sg_entry *sg) { return !!((le16_to_cpu(sg->format_offset) >> SG_SHORT_LEN_FLAG_SHIFT) & SG_SHORT_LEN_FLAG_MASK); } /** * dpaa2_sg_get_len() - Get the length in SG entry * @sg: the given scatter-gathering object * * Return the length. */ static inline u32 dpaa2_sg_get_len(const struct dpaa2_sg_entry *sg) { if (dpaa2_sg_short_len(sg)) return le32_to_cpu(sg->len) & SG_SHORT_LEN_MASK; return le32_to_cpu(sg->len); } /** * dpaa2_sg_set_len() - Set the length in SG entry * @sg: the given scatter-gathering object * @len: the length to be set */ static inline void dpaa2_sg_set_len(struct dpaa2_sg_entry *sg, u32 len) { sg->len = cpu_to_le32(len); } /** * dpaa2_sg_get_offset() - Get the offset in SG entry * @sg: the given scatter-gathering object * * Return the offset. */ static inline u16 dpaa2_sg_get_offset(const struct dpaa2_sg_entry *sg) { return le16_to_cpu(sg->format_offset) & SG_OFFSET_MASK; } /** * dpaa2_sg_set_offset() - Set the offset in SG entry * @sg: the given scatter-gathering object * @offset: the offset to be set */ static inline void dpaa2_sg_set_offset(struct dpaa2_sg_entry *sg, u16 offset) { sg->format_offset &= cpu_to_le16(~SG_OFFSET_MASK); sg->format_offset |= cpu_to_le16(offset); } /** * dpaa2_sg_get_format() - Get the SG format in SG entry * @sg: the given scatter-gathering object * * Return the format. */ static inline enum dpaa2_sg_format dpaa2_sg_get_format(const struct dpaa2_sg_entry *sg) { return (enum dpaa2_sg_format)((le16_to_cpu(sg->format_offset) >> SG_FORMAT_SHIFT) & SG_FORMAT_MASK); } /** * dpaa2_sg_set_format() - Set the SG format in SG entry * @sg: the given scatter-gathering object * @format: the format to be set */ static inline void dpaa2_sg_set_format(struct dpaa2_sg_entry *sg, enum dpaa2_sg_format format) { sg->format_offset &= cpu_to_le16(~(SG_FORMAT_MASK << SG_FORMAT_SHIFT)); sg->format_offset |= cpu_to_le16(format << SG_FORMAT_SHIFT); } /** * dpaa2_sg_get_bpid() - Get the buffer pool id in SG entry * @sg: the given scatter-gathering object * * Return the bpid. */ static inline u16 dpaa2_sg_get_bpid(const struct dpaa2_sg_entry *sg) { return le16_to_cpu(sg->bpid) & SG_BPID_MASK; } /** * dpaa2_sg_set_bpid() - Set the buffer pool id in SG entry * @sg: the given scatter-gathering object * @bpid: the bpid to be set */ static inline void dpaa2_sg_set_bpid(struct dpaa2_sg_entry *sg, u16 bpid) { sg->bpid &= cpu_to_le16(~(SG_BPID_MASK)); sg->bpid |= cpu_to_le16(bpid); } /** * dpaa2_sg_is_final() - Check final bit in SG entry * @sg: the given scatter-gathering object * * Return bool. */ static inline bool dpaa2_sg_is_final(const struct dpaa2_sg_entry *sg) { return !!(le16_to_cpu(sg->format_offset) >> SG_FINAL_FLAG_SHIFT); } /** * dpaa2_sg_set_final() - Set the final bit in SG entry * @sg: the given scatter-gathering object * @final: the final boolean to be set */ static inline void dpaa2_sg_set_final(struct dpaa2_sg_entry *sg, bool final) { sg->format_offset &= cpu_to_le16((~(SG_FINAL_FLAG_MASK << SG_FINAL_FLAG_SHIFT)) & 0xFFFF); sg->format_offset |= cpu_to_le16(final << SG_FINAL_FLAG_SHIFT); } /** * struct dpaa2_fl_entry - structure for frame list entry. * @addr: address in the FLE * @len: length in the FLE * @bpid: buffer pool ID * @format_offset: format, offset, and short-length fields * @frc: frame context * @ctrl: control bits...including pta, pvt1, pvt2, err, etc * @flc: flow context address */ struct dpaa2_fl_entry { __le64 addr; __le32 len; __le16 bpid; __le16 format_offset; __le32 frc; __le32 ctrl; __le64 flc; }; enum dpaa2_fl_format { dpaa2_fl_single = 0, dpaa2_fl_res, dpaa2_fl_sg }; /** * dpaa2_fl_get_addr() - get the addr field of FLE * @fle: the given frame list entry * * Return the address in the frame list entry. */ static inline dma_addr_t dpaa2_fl_get_addr(const struct dpaa2_fl_entry *fle) { return (dma_addr_t)le64_to_cpu(fle->addr); } /** * dpaa2_fl_set_addr() - Set the addr field of FLE * @fle: the given frame list entry * @addr: the address needs to be set in frame list entry */ static inline void dpaa2_fl_set_addr(struct dpaa2_fl_entry *fle, dma_addr_t addr) { fle->addr = cpu_to_le64(addr); } /** * dpaa2_fl_get_frc() - Get the frame context in the FLE * @fle: the given frame list entry * * Return the frame context field in the frame lsit entry. */ static inline u32 dpaa2_fl_get_frc(const struct dpaa2_fl_entry *fle) { return le32_to_cpu(fle->frc); } /** * dpaa2_fl_set_frc() - Set the frame context in the FLE * @fle: the given frame list entry * @frc: the frame context needs to be set in frame list entry */ static inline void dpaa2_fl_set_frc(struct dpaa2_fl_entry *fle, u32 frc) { fle->frc = cpu_to_le32(frc); } /** * dpaa2_fl_get_ctrl() - Get the control bits in the FLE * @fle: the given frame list entry * * Return the control bits field in the frame list entry. */ static inline u32 dpaa2_fl_get_ctrl(const struct dpaa2_fl_entry *fle) { return le32_to_cpu(fle->ctrl); } /** * dpaa2_fl_set_ctrl() - Set the control bits in the FLE * @fle: the given frame list entry * @ctrl: the control bits to be set in the frame list entry */ static inline void dpaa2_fl_set_ctrl(struct dpaa2_fl_entry *fle, u32 ctrl) { fle->ctrl = cpu_to_le32(ctrl); } /** * dpaa2_fl_get_flc() - Get the flow context in the FLE * @fle: the given frame list entry * * Return the flow context in the frame list entry. */ static inline dma_addr_t dpaa2_fl_get_flc(const struct dpaa2_fl_entry *fle) { return (dma_addr_t)le64_to_cpu(fle->flc); } /** * dpaa2_fl_set_flc() - Set the flow context field of FLE * @fle: the given frame list entry * @flc_addr: the flow context needs to be set in frame list entry */ static inline void dpaa2_fl_set_flc(struct dpaa2_fl_entry *fle, dma_addr_t flc_addr) { fle->flc = cpu_to_le64(flc_addr); } static inline bool dpaa2_fl_short_len(const struct dpaa2_fl_entry *fle) { return !!((le16_to_cpu(fle->format_offset) >> FL_SHORT_LEN_FLAG_SHIFT) & FL_SHORT_LEN_FLAG_MASK); } /** * dpaa2_fl_get_len() - Get the length in the FLE * @fle: the given frame list entry * * Return the length field in the frame list entry. */ static inline u32 dpaa2_fl_get_len(const struct dpaa2_fl_entry *fle) { if (dpaa2_fl_short_len(fle)) return le32_to_cpu(fle->len) & FL_SHORT_LEN_MASK; return le32_to_cpu(fle->len); } /** * dpaa2_fl_set_len() - Set the length field of FLE * @fle: the given frame list entry * @len: the length needs to be set in frame list entry */ static inline void dpaa2_fl_set_len(struct dpaa2_fl_entry *fle, u32 len) { fle->len = cpu_to_le32(len); } /** * dpaa2_fl_get_offset() - Get the offset field in the frame list entry * @fle: the given frame list entry * * Return the offset. */ static inline u16 dpaa2_fl_get_offset(const struct dpaa2_fl_entry *fle) { return le16_to_cpu(fle->format_offset) & FL_OFFSET_MASK; } /** * dpaa2_fl_set_offset() - Set the offset field of FLE * @fle: the given frame list entry * @offset: the offset needs to be set in frame list entry */ static inline void dpaa2_fl_set_offset(struct dpaa2_fl_entry *fle, u16 offset) { fle->format_offset &= cpu_to_le16(~FL_OFFSET_MASK); fle->format_offset |= cpu_to_le16(offset); } /** * dpaa2_fl_get_format() - Get the format field in the FLE * @fle: the given frame list entry * * Return the format. */ static inline enum dpaa2_fl_format dpaa2_fl_get_format(const struct dpaa2_fl_entry *fle) { return (enum dpaa2_fl_format)((le16_to_cpu(fle->format_offset) >> FL_FORMAT_SHIFT) & FL_FORMAT_MASK); } /** * dpaa2_fl_set_format() - Set the format field of FLE * @fle: the given frame list entry * @format: the format needs to be set in frame list entry */ static inline void dpaa2_fl_set_format(struct dpaa2_fl_entry *fle, enum dpaa2_fl_format format) { fle->format_offset &= cpu_to_le16(~(FL_FORMAT_MASK << FL_FORMAT_SHIFT)); fle->format_offset |= cpu_to_le16(format << FL_FORMAT_SHIFT); } /** * dpaa2_fl_get_bpid() - Get the bpid field in the FLE * @fle: the given frame list entry * * Return the buffer pool id. */ static inline u16 dpaa2_fl_get_bpid(const struct dpaa2_fl_entry *fle) { return le16_to_cpu(fle->bpid) & FL_BPID_MASK; } /** * dpaa2_fl_set_bpid() - Set the bpid field of FLE * @fle: the given frame list entry * @bpid: buffer pool id to be set */ static inline void dpaa2_fl_set_bpid(struct dpaa2_fl_entry *fle, u16 bpid) { fle->bpid &= cpu_to_le16(~(FL_BPID_MASK)); fle->bpid |= cpu_to_le16(bpid); } /** * dpaa2_fl_is_final() - Check final bit in FLE * @fle: the given frame list entry * * Return bool. */ static inline bool dpaa2_fl_is_final(const struct dpaa2_fl_entry *fle) { return !!(le16_to_cpu(fle->format_offset) >> FL_FINAL_FLAG_SHIFT); } /** * dpaa2_fl_set_final() - Set the final bit in FLE * @fle: the given frame list entry * @final: the final boolean to be set */ static inline void dpaa2_fl_set_final(struct dpaa2_fl_entry *fle, bool final) { fle->format_offset &= cpu_to_le16((~(FL_FINAL_FLAG_MASK << FL_FINAL_FLAG_SHIFT)) & 0xFFFF); fle->format_offset |= cpu_to_le16(final << FL_FINAL_FLAG_SHIFT); } #endif /* __FSL_DPAA2_FD_H */