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| -rw-r--r-- | include/soc/fsl/dpaa2-fd.h | 438 |
1 files changed, 438 insertions, 0 deletions
diff --git a/include/soc/fsl/dpaa2-fd.h b/include/soc/fsl/dpaa2-fd.h new file mode 100644 index 000000000..2576abaa7 --- /dev/null +++ b/include/soc/fsl/dpaa2-fd.h @@ -0,0 +1,438 @@ +/* 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 + +/* 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); +} + +#endif /* __FSL_DPAA2_FD_H */ |