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