mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
121 lines
3.5 KiB
C
121 lines
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2014 Freescale Semiconductor
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*/
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#ifndef __FSL_DPAA_FD_H
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#define __FSL_DPAA_FD_H
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/* Place-holder for FDs, we represent it via the simplest form that we need for
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* now. Different overlays may be needed to support different options, etc. (It
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* is impractical to define One True Struct, because the resulting encoding
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* routines (lots of read-modify-writes) would be worst-case performance whether
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* or not circumstances required them.) */
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struct dpaa_fd {
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union {
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u32 words[8];
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struct dpaa_fd_simple {
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u32 addr_lo;
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u32 addr_hi;
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u32 len;
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/* offset in the MS 16 bits, BPID in the LS 16 bits */
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u32 bpid_offset;
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u32 frc; /* frame context */
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/* "err", "va", "cbmt", "asal", [...] */
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u32 ctrl;
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/* flow context */
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u32 flc_lo;
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u32 flc_hi;
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} simple;
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};
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};
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enum dpaa_fd_format {
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dpaa_fd_single = 0,
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dpaa_fd_list,
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dpaa_fd_sg
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};
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static inline u64 ldpaa_fd_get_addr(const struct dpaa_fd *fd)
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{
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return (u64)((((uint64_t)fd->simple.addr_hi) << 32)
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+ fd->simple.addr_lo);
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}
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static inline void ldpaa_fd_set_addr(struct dpaa_fd *fd, u64 addr)
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{
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fd->simple.addr_hi = upper_32_bits(addr);
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fd->simple.addr_lo = lower_32_bits(addr);
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}
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static inline u32 ldpaa_fd_get_len(const struct dpaa_fd *fd)
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{
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return fd->simple.len;
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}
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static inline void ldpaa_fd_set_len(struct dpaa_fd *fd, u32 len)
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{
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fd->simple.len = len;
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}
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static inline uint16_t ldpaa_fd_get_offset(const struct dpaa_fd *fd)
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{
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return (uint16_t)(fd->simple.bpid_offset >> 16) & 0x0FFF;
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}
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static inline void ldpaa_fd_set_offset(struct dpaa_fd *fd, uint16_t offset)
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{
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fd->simple.bpid_offset &= 0xF000FFFF;
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fd->simple.bpid_offset |= (u32)offset << 16;
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}
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static inline uint16_t ldpaa_fd_get_bpid(const struct dpaa_fd *fd)
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{
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return (uint16_t)(fd->simple.bpid_offset & 0xFFFF);
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}
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static inline void ldpaa_fd_set_bpid(struct dpaa_fd *fd, uint16_t bpid)
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{
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fd->simple.bpid_offset &= 0xFFFF0000;
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fd->simple.bpid_offset |= (u32)bpid;
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}
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/* When frames are dequeued, the FDs show up inside "dequeue" result structures
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* (if at all, not all dequeue results contain valid FDs). This structure type
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* is intentionally defined without internal detail, and the only reason it
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* isn't declared opaquely (without size) is to allow the user to provide
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* suitably-sized (and aligned) memory for these entries. */
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struct ldpaa_dq {
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uint32_t dont_manipulate_directly[16];
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};
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/* Parsing frame dequeue results */
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#define LDPAA_DQ_STAT_FQEMPTY 0x80
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#define LDPAA_DQ_STAT_HELDACTIVE 0x40
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#define LDPAA_DQ_STAT_FORCEELIGIBLE 0x20
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#define LDPAA_DQ_STAT_VALIDFRAME 0x10
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#define LDPAA_DQ_STAT_ODPVALID 0x04
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#define LDPAA_DQ_STAT_VOLATILE 0x02
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#define LDPAA_DQ_STAT_EXPIRED 0x01
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uint32_t ldpaa_dq_flags(const struct ldpaa_dq *);
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static inline int ldpaa_dq_is_pull(const struct ldpaa_dq *dq)
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{
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return (int)(ldpaa_dq_flags(dq) & LDPAA_DQ_STAT_VOLATILE);
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}
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static inline int ldpaa_dq_is_pull_complete(
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const struct ldpaa_dq *dq)
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{
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return (int)(ldpaa_dq_flags(dq) & LDPAA_DQ_STAT_EXPIRED);
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}
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/* seqnum/odpid are valid only if VALIDFRAME and ODPVALID flags are TRUE */
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uint16_t ldpaa_dq_seqnum(const struct ldpaa_dq *);
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uint16_t ldpaa_dq_odpid(const struct ldpaa_dq *);
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uint32_t ldpaa_dq_fqid(const struct ldpaa_dq *);
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uint32_t ldpaa_dq_byte_count(const struct ldpaa_dq *);
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uint32_t ldpaa_dq_frame_count(const struct ldpaa_dq *);
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uint32_t ldpaa_dq_fqd_ctx_hi(const struct ldpaa_dq *);
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uint32_t ldpaa_dq_fqd_ctx_lo(const struct ldpaa_dq *);
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/* get the Frame Descriptor */
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const struct dpaa_fd *ldpaa_dq_fd(const struct ldpaa_dq *);
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#endif /* __FSL_DPAA_FD_H */
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