sys/arch/mips/adm5120/dev/if_admswvar.h

   1 /* $NetBSD$ */
   2
   3 /*-
   4  * Copyright (c) 2007 Ruslan Ermilov and Vsevolod Lobko.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or
   8  * without modification, are permitted provided that the following
   9  * conditions are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above
  13  *    copyright notice, this list of conditions and the following
  14  *    disclaimer in the documentation and/or other materials provided
  15  *    with the distribution.
  16  * 3. The names of the authors may not be used to endorse or promote
  17  *    products derived from this software without specific prior
  18  *    written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY
  21  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  23  * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
  25  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
  27  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  29  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  30  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  31  * OF SUCH DAMAGE.
  32  */
  33 #ifndef _IF_ADMSWVAR_H_
  34 #define _IF_ADMSWVAR_H_
  35
  36 #include <sys/cdefs.h>
  37 __KERNEL_RCSID(0, "$NetBSD: if_aumac.c,v 1.11 2003/07/04 01:19:58 thorpej Exp $");
  38
  39 #include "bpfilter.h"
  40
  41 #include <sys/param.h>
  42 #include <sys/systm.h>
  43 #include <sys/callout.h>
  44 #include <sys/mbuf.h>
  45 #include <sys/malloc.h>
  46 #include <sys/kernel.h>
  47 #include <sys/socket.h>
  48 #include <sys/ioctl.h>
  49 #include <sys/errno.h>
  50 #include <sys/device.h>
  51 #include <sys/queue.h>
  52 #include <sys/wdog.h>
  53
  54 #include <uvm/uvm_extern.h>             /* for PAGE_SIZE */
  55
  56 #include <net/if.h>
  57 #include <net/if_dl.h>
  58 #include <net/if_media.h>
  59 #include <net/if_ether.h>
  60
  61 #if NBPFILTER > 0
  62 #include <net/bpf.h>
  63 #endif
  64
  65 #include <machine/bus.h>
  66 #include <machine/intr.h>
  67 #include <machine/endian.h>
  68
  69 #include <dev/mii/mii.h>
  70 #include <dev/mii/miivar.h>
  71
  72 #include <dev/sysmon/sysmonvar.h>
  73
  74 #include <mips/adm5120/include/adm5120reg.h>
  75 #include <mips/adm5120/include/adm5120var.h>
  76 #include <mips/adm5120/include/adm5120_obiovar.h>
  77
  78 #include <mips/adm5120/dev/if_admswreg.h>
  79
  80 #define ADMSW_EVENT_COUNTERS
  81
  82 #define MAC_BUFLEN      0x07ff
  83
  84 #define ADMSW_NTXHDESC  4
  85 #define ADMSW_NRXHDESC  32
  86 #define ADMSW_NTXLDESC  32
  87 #define ADMSW_NRXLDESC  32
  88
  89 #define ADMSW_NTXHDESC_MASK     (ADMSW_NTXHDESC - 1)
  90 #define ADMSW_NRXHDESC_MASK     (ADMSW_NRXHDESC - 1)
  91 #define ADMSW_NTXLDESC_MASK     (ADMSW_NTXLDESC - 1)
  92 #define ADMSW_NRXLDESC_MASK     (ADMSW_NRXLDESC - 1)
  93
  94 #define ADMSW_NEXTTXH(x)        (((x) + 1) & ADMSW_NTXHDESC_MASK)
  95 #define ADMSW_NEXTRXH(x)        (((x) + 1) & ADMSW_NRXHDESC_MASK)
  96 #define ADMSW_NEXTTXL(x)        (((x) + 1) & ADMSW_NTXLDESC_MASK)
  97 #define ADMSW_NEXTRXL(x)        (((x) + 1) & ADMSW_NRXLDESC_MASK)
  98
  99 struct admsw_control_data {
 100         /* The transmit descriptors. */
 101         struct admsw_desc acd_txhdescs[ADMSW_NTXHDESC];
 102
 103         /* The receive descriptors. */
 104         struct admsw_desc acd_rxhdescs[ADMSW_NRXHDESC];
 105
 106         /* The transmit descriptors. */
 107         struct admsw_desc acd_txldescs[ADMSW_NTXLDESC];
 108
 109         /* The receive descriptors. */
 110         struct admsw_desc acd_rxldescs[ADMSW_NRXLDESC];
 111 };
 112
 113 #define ADMSW_CDOFF(x)          offsetof(struct admsw_control_data, x)
 114 #define ADMSW_CDTXHOFF(x)       ADMSW_CDOFF(acd_txhdescs[(x)])
 115 #define ADMSW_CDTXLOFF(x)       ADMSW_CDOFF(acd_txldescs[(x)])
 116 #define ADMSW_CDRXHOFF(x)       ADMSW_CDOFF(acd_rxhdescs[(x)])
 117 #define ADMSW_CDRXLOFF(x)       ADMSW_CDOFF(acd_rxldescs[(x)])
 118
 119 struct admsw_descsoft {
 120         struct mbuf *ds_mbuf;
 121         bus_dmamap_t ds_dmamap;
 122 };
 123
 124 /*
 125  * Software state per device.
 126  */
 127 struct admsw_softc {
 128         struct device sc_dev;           /* generic device information */
 129         uint8_t         sc_enaddr[ETHER_ADDR_LEN];
 130         bus_dma_tag_t sc_dmat;          /* bus DMA tag */
 131         bus_space_tag_t sc_st;          /* bus space tag */
 132         bus_space_handle_t sc_ioh;      /* MAC space handle */
 133         struct sysmon_wdog      sc_smw;
 134         struct ifmedia sc_ifmedia[SW_DEVS];
 135         int ndevs;                      /* number of IFF_RUNNING interfaces */
 136         struct ethercom sc_ethercom[SW_DEVS];   /* Ethernet common data */
 137         void *sc_sdhook;                /* shutdown hook */
 138         void *sc_ih;                    /* interrupt cookie */
 139         struct admsw_descsoft sc_txhsoft[ADMSW_NTXHDESC];
 140         struct admsw_descsoft sc_rxhsoft[ADMSW_NRXHDESC];
 141         struct admsw_descsoft sc_txlsoft[ADMSW_NTXLDESC];
 142         struct admsw_descsoft sc_rxlsoft[ADMSW_NRXLDESC];
 143         bus_dmamap_t sc_cddmamap;       /* control data DMA map */
 144 #define sc_cddma        sc_cddmamap->dm_segs[0].ds_addr
 145         struct admsw_control_data *sc_control_data;
 146 #define sc_txhdescs     sc_control_data->acd_txhdescs
 147 #define sc_rxhdescs     sc_control_data->acd_rxhdescs
 148 #define sc_txldescs     sc_control_data->acd_txldescs
 149 #define sc_rxldescs     sc_control_data->acd_rxldescs
 150
 151         int sc_txfree;                  /* number of free Tx descriptors */
 152         int sc_txnext;                  /* next Tx descriptor to use */
 153         int sc_txdirty;                 /* first dirty Tx descriptor */
 154
 155         int sc_rxptr;                   /* next ready Rx descriptor */
 156
 157 #ifdef ADMSW_EVENT_COUNTERS
 158         struct evcnt sc_ev_txstall;     /* Tx stalled */
 159         struct evcnt sc_ev_rxstall;     /* Rx stalled */
 160         struct evcnt sc_ev_txintr;      /* Tx interrupts */
 161         struct evcnt sc_ev_rxintr;      /* Rx interrupts */
 162 #if 1
 163         struct evcnt sc_ev_rxsync;      /* Rx syncs */
 164 #endif
 165 #endif
 166
 167 };
 168
 169 #define ADMSW_CDTXHADDR(sc, x)  ((sc)->sc_cddma + ADMSW_CDTXHOFF((x)))
 170 #define ADMSW_CDTXLADDR(sc, x)  ((sc)->sc_cddma + ADMSW_CDTXLOFF((x)))
 171 #define ADMSW_CDRXHADDR(sc, x)  ((sc)->sc_cddma + ADMSW_CDRXHOFF((x)))
 172 #define ADMSW_CDRXLADDR(sc, x)  ((sc)->sc_cddma + ADMSW_CDRXLOFF((x)))
 173
 174 #define ADMSW_CDTXHSYNC(sc, x, ops)                                     \
 175         bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap,               \
 176             ADMSW_CDTXHOFF((x)), sizeof(struct admsw_desc), (ops))
 177
 178 #define ADMSW_CDTXLSYNC(sc, x, ops)                                     \
 179         bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap,               \
 180             ADMSW_CDTXLOFF((x)), sizeof(struct admsw_desc), (ops))
 181
 182 #define ADMSW_CDRXHSYNC(sc, x, ops)                                     \
 183         bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap,               \
 184             ADMSW_CDRXHOFF((x)), sizeof(struct admsw_desc), (ops))
 185
 186 #define ADMSW_CDRXLSYNC(sc, x, ops)                                     \
 187         bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap,               \
 188             ADMSW_CDRXLOFF((x)), sizeof(struct admsw_desc), (ops))
 189
 190 #define ADMSW_INIT_RXHDESC(sc, x)                               \
 191 do {                                                            \
 192         struct admsw_descsoft *__ds = &(sc)->sc_rxhsoft[(x)];   \
 193         struct admsw_desc *__desc = &(sc)->sc_rxhdescs[(x)];    \
 194         struct mbuf *__m = __ds->ds_mbuf;                       \
 195                                                                 \
 196         __m->m_data = __m->m_ext.ext_buf + 2;                   \
 197         __desc->data = __ds->ds_dmamap->dm_segs[0].ds_addr + 2; \
 198         __desc->cntl = 0;                                       \
 199         __desc->len = min(MCLBYTES - 2, MAC_BUFLEN - 2);        \
 200         __desc->status = 0;                                     \
 201         if ((x) == ADMSW_NRXHDESC - 1)                          \
 202                 __desc->data |= ADM5120_DMA_RINGEND;            \
 203         __desc->data |= ADM5120_DMA_OWN;                        \
 204         ADMSW_CDRXHSYNC((sc), (x), BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \
 205 } while (0)
 206
 207 #define ADMSW_INIT_RXLDESC(sc, x)                               \
 208 do {                                                            \
 209         struct admsw_descsoft *__ds = &(sc)->sc_rxlsoft[(x)];   \
 210         struct admsw_desc *__desc = &(sc)->sc_rxldescs[(x)];    \
 211         struct mbuf *__m = __ds->ds_mbuf;                       \
 212                                                                 \
 213         __m->m_data = __m->m_ext.ext_buf + 2;                   \
 214         __desc->data = __ds->ds_dmamap->dm_segs[0].ds_addr + 2; \
 215         __desc->cntl = 0;                                       \
 216         __desc->len = min(MCLBYTES - 2, MAC_BUFLEN - 2);        \
 217         __desc->status = 0;                                     \
 218         if ((x) == ADMSW_NRXLDESC - 1)                          \
 219                 __desc->data |= ADM5120_DMA_RINGEND;            \
 220         __desc->data |= ADM5120_DMA_OWN;                        \
 221         ADMSW_CDRXLSYNC((sc), (x), BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \
 222 } while (0)
 223
 224 void admwdog_attach(struct admsw_softc *);
 225
 226 #endif /* _IF_ADMSWVAR_H_ */