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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright © 2023 Dmitry Salychev
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _DPAA2_BUF_H
#define _DPAA2_BUF_H
#include <sys/types.h>
#include <sys/param.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <machine/bus.h>
#define DPAA2_RX_BUF_SIZE (MJUM9BYTES)
struct dpaa2_buf {
bus_addr_t paddr;
caddr_t vaddr;
bus_dma_tag_t dmat;
bus_dmamap_t dmap;
bus_dma_segment_t seg;
int nseg;
struct mbuf *m;
struct dpaa2_buf *sgt;
void *opt;
};
#define DPAA2_BUF_INIT_TAGOPT(__buf, __tag, __opt) do { \
KASSERT((__buf) != NULL, ("%s: buf is NULL", __func__)); \
\
(__buf)->paddr = 0; \
(__buf)->vaddr = NULL; \
(__buf)->dmat = (__tag); \
(__buf)->dmap = NULL; \
(__buf)->seg.ds_addr = 0; \
(__buf)->seg.ds_len = 0; \
(__buf)->nseg = 0; \
(__buf)->m = NULL; \
(__buf)->sgt = NULL; \
(__buf)->opt = (__opt); \
} while(0)
#define DPAA2_BUF_INIT(__buf) DPAA2_BUF_INIT_TAGOPT((__buf), NULL, NULL)
#if defined(INVARIANTS)
/*
* TXPREP/TXREADY macros allow to verify whether Tx buffer is prepared to be
* seeded and/or ready to be used for transmission.
*
* NOTE: Any modification should be carefully analyzed and justified.
*/
#define DPAA2_BUF_ASSERT_TXPREP(__buf) do { \
struct dpaa2_buf *__sgt = (__buf)->sgt; \
KASSERT((__sgt) != NULL, ("%s: no S/G table?", __func__)); \
\
KASSERT((__buf)->paddr == 0, ("%s: paddr set?", __func__)); \
KASSERT((__buf)->vaddr == NULL, ("%s: vaddr set?", __func__)); \
KASSERT((__buf)->dmat != NULL, ("%s: no DMA tag?", __func__)); \
KASSERT((__buf)->dmap == NULL, ("%s: DMA map set?", __func__)); \
KASSERT((__buf)->seg.ds_addr == 0, ("%s: already mapped?", __func__)); \
KASSERT((__buf)->seg.ds_len == 0, ("%s: already mapped?", __func__)); \
KASSERT((__buf)->nseg == 0, ("%s: nseg > 0?", __func__)); \
KASSERT((__buf)->m == NULL, ("%s: mbuf set?", __func__)); \
KASSERT((__buf)->opt != NULL, ("%s: no Tx ring?", __func__)); \
\
KASSERT((__sgt)->paddr == 0, ("%s: S/G paddr set?", __func__)); \
KASSERT((__sgt)->vaddr == NULL, ("%s: S/G vaddr set?", __func__)); \
KASSERT((__sgt)->dmat != NULL, ("%s: no S/G DMA tag?", __func__)); \
KASSERT((__sgt)->dmap == NULL, ("%s: S/G DMA map set?", __func__)); \
KASSERT((__sgt)->seg.ds_addr == 0, ("%s: S/G mapped?", __func__)); \
KASSERT((__sgt)->seg.ds_len == 0, ("%s: S/G mapped?", __func__)); \
KASSERT((__sgt)->nseg == 0, ("%s: S/G nseg > 0?", __func__)); \
KASSERT((__sgt)->m == NULL, ("%s: S/G mbuf set?", __func__)); \
KASSERT((__sgt)->opt == (__buf),("%s: buf not linked?", __func__)); \
} while(0)
#define DPAA2_BUF_ASSERT_TXREADY(__buf) do { \
struct dpaa2_buf *__sgt = (__buf)->sgt; \
KASSERT((__sgt) != NULL, ("%s: no S/G table?", __func__)); \
\
KASSERT((__buf)->paddr == 0, ("%s: paddr set?", __func__)); \
KASSERT((__buf)->vaddr == NULL, ("%s: vaddr set?", __func__)); \
KASSERT((__buf)->dmat != NULL, ("%s: no DMA tag?", __func__)); \
KASSERT((__buf)->dmap != NULL, ("%s: no DMA map?", __func__)); \
KASSERT((__buf)->seg.ds_addr == 0, ("%s: already mapped?", __func__)); \
KASSERT((__buf)->seg.ds_len == 0, ("%s: already mapped?", __func__)); \
KASSERT((__buf)->nseg == 0, ("%s: nseg > 0?", __func__)); \
KASSERT((__buf)->m == NULL, ("%s: mbuf set?", __func__)); \
KASSERT((__buf)->opt != NULL, ("%s: no Tx ring?", __func__)); \
\
KASSERT((__sgt)->paddr == 0, ("%s: S/G paddr set?", __func__)); \
KASSERT((__sgt)->vaddr != NULL, ("%s: no S/G vaddr?", __func__)); \
KASSERT((__sgt)->dmat != NULL, ("%s: no S/G DMA tag?", __func__)); \
KASSERT((__sgt)->dmap != NULL, ("%s: no S/G DMA map?", __func__)); \
KASSERT((__sgt)->seg.ds_addr == 0, ("%s: S/G mapped?", __func__)); \
KASSERT((__sgt)->seg.ds_len == 0, ("%s: S/G mapped?", __func__)); \
KASSERT((__sgt)->nseg == 0, ("%s: S/G nseg > 0?", __func__)); \
KASSERT((__sgt)->m == NULL, ("%s: S/G mbuf set?", __func__)); \
KASSERT((__sgt)->opt == (__buf),("%s: buf not linked?", __func__)); \
} while(0)
#else /* !INVARIANTS */
#define DPAA2_BUF_ASSERT_TXPREP(__buf) do { \
} while(0)
#define DPAA2_BUF_ASSERT_TXREADY(__buf) do { \
} while(0)
#endif /* INVARIANTS */
#if defined(INVARIANTS)
/*
* RXPREP/RXREADY macros allow to verify whether Rx buffer is prepared to be
* seeded and/or ready to be used for reception.
*
* NOTE: Any modification should be carefully analyzed and justified.
*/
#define DPAA2_BUF_ASSERT_RXPREP(__buf) do { \
KASSERT((__buf)->paddr == 0, ("%s: paddr set?", __func__)); \
KASSERT((__buf)->vaddr == NULL, ("%s: vaddr set?", __func__)); \
KASSERT((__buf)->dmat != NULL, ("%s: no DMA tag?", __func__)); \
/* KASSERT((__buf)->dmap == NULL, ("%s: DMA map set?", __func__)); */ \
KASSERT((__buf)->seg.ds_addr == 0, ("%s: already mapped?", __func__)); \
KASSERT((__buf)->seg.ds_len == 0, ("%s: already mapped?", __func__)); \
KASSERT((__buf)->nseg == 0, ("%s: nseg > 0?", __func__)); \
KASSERT((__buf)->m == NULL, ("%s: mbuf set?", __func__)); \
KASSERT((__buf)->sgt == NULL, ("%s: S/G table set?", __func__)); \
KASSERT((__buf)->opt != NULL, ("%s: no channel?", __func__)); \
} while(0)
#define DPAA2_BUF_ASSERT_RXREADY(__buf) do { \
KASSERT((__buf)->paddr != 0, ("%s: paddr not set?", __func__)); \
KASSERT((__buf)->vaddr != NULL, ("%s: vaddr not set?", __func__)); \
KASSERT((__buf)->dmat != NULL, ("%s: no DMA tag?", __func__)); \
KASSERT((__buf)->dmap != NULL, ("%s: no DMA map?", __func__)); \
KASSERT((__buf)->seg.ds_addr != 0, ("%s: not mapped?", __func__)); \
KASSERT((__buf)->seg.ds_len != 0, ("%s: not mapped?", __func__)); \
KASSERT((__buf)->nseg == 1, ("%s: nseg != 1?", __func__)); \
KASSERT((__buf)->m != NULL, ("%s: no mbuf?", __func__)); \
KASSERT((__buf)->sgt == NULL, ("%s: S/G table set?", __func__)); \
KASSERT((__buf)->opt != NULL, ("%s: no channel?", __func__)); \
} while(0)
#else /* !INVARIANTS */
#define DPAA2_BUF_ASSERT_RXPREP(__buf) do { \
} while(0)
#define DPAA2_BUF_ASSERT_RXREADY(__buf) do { \
} while(0)
#endif /* INVARIANTS */
int dpaa2_buf_seed_pool(device_t, device_t, void *, uint32_t, int, struct mtx *);
int dpaa2_buf_seed_rxb(device_t, struct dpaa2_buf *, int, struct mtx *);
int dpaa2_buf_seed_txb(device_t, struct dpaa2_buf *);
#endif /* _DPAA2_BUF_H */
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