mvxpbmvar.h revision 1.1.2.2
1 1.1.2.2 skrll /* $NetBSD: mvxpbmvar.h,v 1.1.2.2 2015/06/06 14:40:08 skrll Exp $ */ 2 1.1.2.2 skrll /* 3 1.1.2.2 skrll * Copyright (c) 2015 Internet Initiative Japan Inc. 4 1.1.2.2 skrll * All rights reserved. 5 1.1.2.2 skrll * 6 1.1.2.2 skrll * Redistribution and use in source and binary forms, with or without 7 1.1.2.2 skrll * modification, are permitted provided that the following conditions 8 1.1.2.2 skrll * are met: 9 1.1.2.2 skrll * 1. Redistributions of source code must retain the above copyright 10 1.1.2.2 skrll * notice, this list of conditions and the following disclaimer. 11 1.1.2.2 skrll * 2. Redistributions in binary form must reproduce the above copyright 12 1.1.2.2 skrll * notice, this list of conditions and the following disclaimer in the 13 1.1.2.2 skrll * documentation and/or other materials provided with the distribution. 14 1.1.2.2 skrll * 15 1.1.2.2 skrll * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 1.1.2.2 skrll * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 1.1.2.2 skrll * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 1.1.2.2 skrll * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 19 1.1.2.2 skrll * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 1.1.2.2 skrll * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 1.1.2.2 skrll * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 1.1.2.2 skrll * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23 1.1.2.2 skrll * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 24 1.1.2.2 skrll * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 1.1.2.2 skrll * POSSIBILITY OF SUCH DAMAGE. 26 1.1.2.2 skrll */ 27 1.1.2.2 skrll #ifndef _MVXPBMVAR_H_ 28 1.1.2.2 skrll #define _MVXPBMVAR_H_ 29 1.1.2.2 skrll #include <dev/marvell/marvellvar.h> 30 1.1.2.2 skrll 31 1.1.2.2 skrll /* 32 1.1.2.2 skrll * Max number of unit. 33 1.1.2.2 skrll */ 34 1.1.2.2 skrll #define MVXPBM_UNIT_MAX 1 35 1.1.2.2 skrll 36 1.1.2.2 skrll /* 37 1.1.2.2 skrll * Buffer alignement 38 1.1.2.2 skrll */ 39 1.1.2.2 skrll #define MVXPBM_NUM_SLOTS 2048 /* minimum number of slots */ 40 1.1.2.2 skrll #define MVXPBM_PACKET_SIZE 2000 /* minimum packet size */ 41 1.1.2.2 skrll 42 1.1.2.2 skrll #define MVXPBM_BUF_ALIGN 65536 /* Mbus window size granularity */ 43 1.1.2.2 skrll #define MVXPBM_BUF_MASK (MVXPBM_BUF_ALIGN - 1) 44 1.1.2.2 skrll #define MVXPBM_CHUNK_ALIGN 32 /* Cache line size */ 45 1.1.2.2 skrll #define MVXPBM_CHUNK_MASK (MVXPBM_CHUNK_ALIGN - 1) 46 1.1.2.2 skrll #define MVXPBM_DATA_ALIGN 32 /* Cache line size */ 47 1.1.2.2 skrll #define MVXPBM_DATA_MASK (MVXPBM_DATA_ALIGN - 1) 48 1.1.2.2 skrll #define MVXPBM_DATA_UNIT 8 49 1.1.2.2 skrll 50 1.1.2.2 skrll /* 51 1.1.2.2 skrll * Packet Buffer Header 52 1.1.2.2 skrll * 53 1.1.2.2 skrll * this chunks may be managed by H/W Buffer Manger(BM) device, 54 1.1.2.2 skrll * but there is no device driver yet. 55 1.1.2.2 skrll * 56 1.1.2.2 skrll * +----------------+ bm_buf 57 1.1.2.2 skrll * |chunk header | | 58 1.1.2.2 skrll * +----------------+ | | |chunk->buf_off 59 1.1.2.2 skrll * |mbuf (M_EXT set)|<--------|struct mbuf *m | V 60 1.1.2.2 skrll * +----------------+ +----------------+ chunk->buf_va/buf_pa 61 1.1.2.2 skrll * | m_ext.ext_buf|-------->|packet buffer | | 62 1.1.2.2 skrll * +----------------+ | | |chunk->buf_size 63 1.1.2.2 skrll * | | V 64 1.1.2.2 skrll * +----------------+ 65 1.1.2.2 skrll * |chunk header | 66 1.1.2.2 skrll * |.... | 67 1.1.2.2 skrll */ 68 1.1.2.2 skrll 69 1.1.2.2 skrll struct mvxpbm_chunk { 70 1.1.2.2 skrll struct mbuf *m; /* back pointer to mbuf header */ 71 1.1.2.2 skrll void *sc; /* back pointer to softc */ 72 1.1.2.2 skrll off_t off; /* offset of chunk */ 73 1.1.2.2 skrll paddr_t pa; /* physical address of chunk */ 74 1.1.2.2 skrll 75 1.1.2.2 skrll off_t buf_off; /* offset of packet from sc_bm_buf */ 76 1.1.2.2 skrll paddr_t buf_pa; /* physical address of packet */ 77 1.1.2.2 skrll vaddr_t buf_va; /* virtual addres of packet */ 78 1.1.2.2 skrll size_t buf_size; /* size of buffer (exclude hdr) */ 79 1.1.2.2 skrll 80 1.1.2.2 skrll LIST_ENTRY(mvxpbm_chunk) link; 81 1.1.2.2 skrll /* followed by packet buffer */ 82 1.1.2.2 skrll }; 83 1.1.2.2 skrll 84 1.1.2.2 skrll struct mvxpbm_softc { 85 1.1.2.2 skrll device_t sc_dev; 86 1.1.2.2 skrll bus_dma_tag_t sc_dmat; 87 1.1.2.2 skrll bus_space_tag_t sc_iot; 88 1.1.2.2 skrll kmutex_t sc_mtx; 89 1.1.2.2 skrll 90 1.1.2.2 skrll /* software emulated */ 91 1.1.2.2 skrll int sc_emul; 92 1.1.2.2 skrll 93 1.1.2.2 skrll /* DMA MAP for entire buffer */ 94 1.1.2.2 skrll bus_dmamap_t sc_buf_map; 95 1.1.2.2 skrll char *sc_buf; 96 1.1.2.2 skrll paddr_t sc_buf_pa; 97 1.1.2.2 skrll size_t sc_buf_size; 98 1.1.2.2 skrll 99 1.1.2.2 skrll /* memory chunk properties */ 100 1.1.2.2 skrll size_t sc_slotsize; /* size of bm_slots include header */ 101 1.1.2.2 skrll uint32_t sc_chunk_count; /* number of chunks */ 102 1.1.2.2 skrll size_t sc_chunk_size; /* size of packet buffer */ 103 1.1.2.2 skrll size_t sc_chunk_header_size; /* size of hader + padding */ 104 1.1.2.2 skrll off_t sc_chunk_packet_offset; /* allocate m_leading_space */ 105 1.1.2.2 skrll 106 1.1.2.2 skrll /* for software based management */ 107 1.1.2.2 skrll LIST_HEAD(__mvxpbm_freehead, mvxpbm_chunk) sc_free; 108 1.1.2.2 skrll LIST_HEAD(__mvxpbm_inusehead, mvxpbm_chunk) sc_inuse; 109 1.1.2.2 skrll }; 110 1.1.2.2 skrll 111 1.1.2.2 skrll #define BM_SYNC_ALL 0 112 1.1.2.2 skrll 113 1.1.2.2 skrll /* get mvxpbm device context */ 114 1.1.2.2 skrll struct mvxpbm_softc *mvxpbm_device(struct marvell_attach_args *); 115 1.1.2.2 skrll 116 1.1.2.2 skrll /* allocate new memory chunk */ 117 1.1.2.2 skrll struct mvxpbm_chunk *mvxpbm_alloc(struct mvxpbm_softc *); 118 1.1.2.2 skrll 119 1.1.2.2 skrll /* free memory chunk */ 120 1.1.2.2 skrll void mvxpbm_free_chunk(struct mvxpbm_chunk *); 121 1.1.2.2 skrll 122 1.1.2.2 skrll /* prepare mbuf header after Rx */ 123 1.1.2.2 skrll int mvxpbm_init_mbuf_hdr(struct mvxpbm_chunk *); 124 1.1.2.2 skrll 125 1.1.2.2 skrll /* sync DMA seguments */ 126 1.1.2.2 skrll void mvxpbm_dmamap_sync(struct mvxpbm_chunk *, size_t, int); 127 1.1.2.2 skrll 128 1.1.2.2 skrll /* lock */ 129 1.1.2.2 skrll void mvxpbm_lock(struct mvxpbm_softc *); 130 1.1.2.2 skrll void mvxpbm_unlock(struct mvxpbm_softc *); 131 1.1.2.2 skrll 132 1.1.2.2 skrll /* get params */ 133 1.1.2.2 skrll const char *mvxpbm_xname(struct mvxpbm_softc *); 134 1.1.2.2 skrll size_t mvxpbm_chunk_size(struct mvxpbm_softc *); 135 1.1.2.2 skrll uint32_t mvxpbm_chunk_count(struct mvxpbm_softc *); 136 1.1.2.2 skrll off_t mvxpbm_packet_offset(struct mvxpbm_softc *); 137 1.1.2.2 skrll paddr_t mvxpbm_buf_pbase(struct mvxpbm_softc *); 138 1.1.2.2 skrll size_t mvxpbm_buf_size(struct mvxpbm_softc *); 139 1.1.2.2 skrll #endif /* _MVXPBMVAR_H_ */ 140
Indexes created Wed Oct 29 20:09:47 GMT 2025