121 lines
3.5 KiB
C
121 lines
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright (C) 2014 Freescale Semiconductor
|
|
*/
|
|
#ifndef __FSL_DPAA_FD_H
|
|
#define __FSL_DPAA_FD_H
|
|
|
|
/* Place-holder for FDs, we represent it via the simplest form that we need for
|
|
* now. Different overlays may be needed to support different options, etc. (It
|
|
* is impractical to define One True Struct, because the resulting encoding
|
|
* routines (lots of read-modify-writes) would be worst-case performance whether
|
|
* or not circumstances required them.) */
|
|
struct dpaa_fd {
|
|
union {
|
|
u32 words[8];
|
|
struct dpaa_fd_simple {
|
|
u32 addr_lo;
|
|
u32 addr_hi;
|
|
u32 len;
|
|
/* offset in the MS 16 bits, BPID in the LS 16 bits */
|
|
u32 bpid_offset;
|
|
u32 frc; /* frame context */
|
|
/* "err", "va", "cbmt", "asal", [...] */
|
|
u32 ctrl;
|
|
/* flow context */
|
|
u32 flc_lo;
|
|
u32 flc_hi;
|
|
} simple;
|
|
};
|
|
};
|
|
|
|
enum dpaa_fd_format {
|
|
dpaa_fd_single = 0,
|
|
dpaa_fd_list,
|
|
dpaa_fd_sg
|
|
};
|
|
|
|
static inline u64 ldpaa_fd_get_addr(const struct dpaa_fd *fd)
|
|
{
|
|
return (u64)((((uint64_t)fd->simple.addr_hi) << 32)
|
|
+ fd->simple.addr_lo);
|
|
}
|
|
|
|
static inline void ldpaa_fd_set_addr(struct dpaa_fd *fd, u64 addr)
|
|
{
|
|
fd->simple.addr_hi = upper_32_bits(addr);
|
|
fd->simple.addr_lo = lower_32_bits(addr);
|
|
}
|
|
|
|
static inline u32 ldpaa_fd_get_len(const struct dpaa_fd *fd)
|
|
{
|
|
return fd->simple.len;
|
|
}
|
|
|
|
static inline void ldpaa_fd_set_len(struct dpaa_fd *fd, u32 len)
|
|
{
|
|
fd->simple.len = len;
|
|
}
|
|
|
|
static inline uint16_t ldpaa_fd_get_offset(const struct dpaa_fd *fd)
|
|
{
|
|
return (uint16_t)(fd->simple.bpid_offset >> 16) & 0x0FFF;
|
|
}
|
|
|
|
static inline void ldpaa_fd_set_offset(struct dpaa_fd *fd, uint16_t offset)
|
|
{
|
|
fd->simple.bpid_offset &= 0xF000FFFF;
|
|
fd->simple.bpid_offset |= (u32)offset << 16;
|
|
}
|
|
|
|
static inline uint16_t ldpaa_fd_get_bpid(const struct dpaa_fd *fd)
|
|
{
|
|
return (uint16_t)(fd->simple.bpid_offset & 0xFFFF);
|
|
}
|
|
|
|
static inline void ldpaa_fd_set_bpid(struct dpaa_fd *fd, uint16_t bpid)
|
|
{
|
|
fd->simple.bpid_offset &= 0xFFFF0000;
|
|
fd->simple.bpid_offset |= (u32)bpid;
|
|
}
|
|
|
|
/* When frames are dequeued, the FDs show up inside "dequeue" result structures
|
|
* (if at all, not all dequeue results contain valid FDs). This structure type
|
|
* is intentionally defined without internal detail, and the only reason it
|
|
* isn't declared opaquely (without size) is to allow the user to provide
|
|
* suitably-sized (and aligned) memory for these entries. */
|
|
struct ldpaa_dq {
|
|
uint32_t dont_manipulate_directly[16];
|
|
};
|
|
|
|
/* Parsing frame dequeue results */
|
|
#define LDPAA_DQ_STAT_FQEMPTY 0x80
|
|
#define LDPAA_DQ_STAT_HELDACTIVE 0x40
|
|
#define LDPAA_DQ_STAT_FORCEELIGIBLE 0x20
|
|
#define LDPAA_DQ_STAT_VALIDFRAME 0x10
|
|
#define LDPAA_DQ_STAT_ODPVALID 0x04
|
|
#define LDPAA_DQ_STAT_VOLATILE 0x02
|
|
#define LDPAA_DQ_STAT_EXPIRED 0x01
|
|
uint32_t ldpaa_dq_flags(const struct ldpaa_dq *);
|
|
static inline int ldpaa_dq_is_pull(const struct ldpaa_dq *dq)
|
|
{
|
|
return (int)(ldpaa_dq_flags(dq) & LDPAA_DQ_STAT_VOLATILE);
|
|
}
|
|
static inline int ldpaa_dq_is_pull_complete(
|
|
const struct ldpaa_dq *dq)
|
|
{
|
|
return (int)(ldpaa_dq_flags(dq) & LDPAA_DQ_STAT_EXPIRED);
|
|
}
|
|
/* seqnum/odpid are valid only if VALIDFRAME and ODPVALID flags are TRUE */
|
|
uint16_t ldpaa_dq_seqnum(const struct ldpaa_dq *);
|
|
uint16_t ldpaa_dq_odpid(const struct ldpaa_dq *);
|
|
uint32_t ldpaa_dq_fqid(const struct ldpaa_dq *);
|
|
uint32_t ldpaa_dq_byte_count(const struct ldpaa_dq *);
|
|
uint32_t ldpaa_dq_frame_count(const struct ldpaa_dq *);
|
|
uint32_t ldpaa_dq_fqd_ctx_hi(const struct ldpaa_dq *);
|
|
uint32_t ldpaa_dq_fqd_ctx_lo(const struct ldpaa_dq *);
|
|
/* get the Frame Descriptor */
|
|
const struct dpaa_fd *ldpaa_dq_fd(const struct ldpaa_dq *);
|
|
|
|
#endif /* __FSL_DPAA_FD_H */
|