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a2a55e518f
Freescale's Layerscape Management Complex (MC) provide support various objects like DPRC, DPNI, DPBP and DPIO. Where: DPRC: Place holdes for other MC objectes like DPNI, DPBP, DPIO DPBP: Management of buffer pool DPIO: Used for used to QBMan portal DPNI: Represents standard network interface These objects are used for DPAA ethernet drivers. Signed-off-by: J. German Rivera <German.Rivera@freescale.com> Signed-off-by: Lijun Pan <Lijun.Pan@freescale.com> Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com> Signed-off-by: Geoff Thorpe <Geoff.Thorpe@freescale.com> Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com> Signed-off-by: Cristian Sovaiala <cristian.sovaiala@freescale.com> Signed-off-by: pankaj chauhan <pankaj.chauhan@freescale.com> Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
121 lines
3.5 KiB
C
121 lines
3.5 KiB
C
/*
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* Copyright (C) 2014 Freescale Semiconductor
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*
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* SPDX-License-Identifier: GPL-2.0+
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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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