dpaa2_types.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause
    3  *
    4  * Copyright © 2021-2022 Dmitry Salychev
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  */
   27 
   28 #ifndef _DPAA2_TYPES_H
   29 #define _DPAA2_TYPES_H
   30 
   31 #include <machine/atomic.h>
   32 
   33 /**
   34  * @brief Types of the DPAA2 devices.
   35  */
   36 enum dpaa2_dev_type {
   37         DPAA2_DEV_MC = 7500,    /* Management Complex (firmware bus) */
   38         DPAA2_DEV_RC,           /* Resource Container (firmware bus) */
   39         DPAA2_DEV_IO,           /* I/O object (to work with QBMan portal) */
   40         DPAA2_DEV_NI,           /* Network Interface */
   41         DPAA2_DEV_MCP,          /* MC portal */
   42         DPAA2_DEV_BP,           /* Buffer Pool */
   43         DPAA2_DEV_CON,          /* Concentrator */
   44         DPAA2_DEV_MAC,          /* MAC object */
   45         DPAA2_DEV_MUX,          /* MUX (Datacenter bridge) object */
   46         DPAA2_DEV_SW,           /* Ethernet Switch */
   47 
   48         DPAA2_DEV_NOTYPE        /* Shouldn't be assigned to any DPAA2 device. */
   49 };
   50 
   51 /**
   52  * @brief Types of the DPAA2 buffers.
   53  */
   54 enum dpaa2_buf_type {
   55         DPAA2_BUF_RX = 75,      /* Rx buffer */
   56         DPAA2_BUF_TX,           /* Tx buffer */
   57         DPAA2_BUF_STORE         /* Channel storage, key configuration */
   58 };
   59 
   60 /**
   61  * @brief DMA-mapped buffer (for Rx/Tx buffers, channel storage, etc.).
   62  */
   63 struct dpaa2_buf {
   64         enum dpaa2_buf_type              type;
   65         union {
   66                 struct {
   67                         bus_dma_tag_t    dmat; /* DMA tag for this buffer */
   68                         bus_dmamap_t     dmap;
   69                         bus_addr_t       paddr;
   70                         void            *vaddr;
   71 
   72                         struct mbuf     *m; /* associated mbuf */
   73                 } rx;
   74                 struct {
   75                         bus_dma_tag_t    dmat; /* DMA tag for this buffer */
   76                         bus_dmamap_t     dmap;
   77                         bus_addr_t       paddr;
   78                         void            *vaddr;
   79 
   80                         struct mbuf     *m; /* associated mbuf */
   81                         uint64_t         idx;
   82 
   83                         /* for scatter/gather table */
   84                         bus_dma_tag_t    sgt_dmat;
   85                         bus_dmamap_t     sgt_dmap;
   86                         bus_addr_t       sgt_paddr;
   87                         void            *sgt_vaddr;
   88                 } tx;
   89                 struct {
   90                         bus_dma_tag_t    dmat; /* DMA tag for this buffer */
   91                         bus_dmamap_t     dmap;
   92                         bus_addr_t       paddr;
   93                         void            *vaddr;
   94                 } store;
   95         };
   96 };
   97 
   98 struct dpaa2_atomic {
   99         volatile int counter;
  100 };
  101 
  102 /* Handy wrappers over atomic operations. */
  103 #define DPAA2_ATOMIC_XCHG(a, val) \
  104         (atomic_swap_int(&(a)->counter, (val)))
  105 #define DPAA2_ATOMIC_READ(a) \
  106         (atomic_load_acq_int(&(a)->counter))
  107 #define DPAA2_ATOMIC_ADD(a, val) \
  108         (atomic_add_acq_int(&(a)->counter, (val)))
  109 
  110 /* Convert DPAA2 type to/from string. */
  111 const char              *dpaa2_ttos(enum dpaa2_dev_type type);
  112 enum dpaa2_dev_type      dpaa2_stot(const char *str);
  113 
  114 #endif /* _DPAA2_TYPES_H */

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FreeBSD/Linux Kernel Cross Reference sys/dev/dpaa2/dpaa2_types.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/dpaa2/dpaa2_types.h