The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/mips/adm5120/if_admswvar.h

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    1 /* $NetBSD: if_admswvar.h,v 1.1 2007/03/20 08:52:02 dyoung Exp $ */
    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 __FBSDID("$FreeBSD: stable/10/sys/mips/adm5120/if_admswvar.h 202175 2010-01-12 21:36:08Z imp $");
   38 
   39 #include <sys/param.h>
   40 #include <sys/systm.h>
   41 #include <sys/bus.h>
   42 #include <sys/kernel.h>
   43 #include <sys/mbuf.h>
   44 #include <sys/malloc.h>
   45 #include <sys/module.h>
   46 #include <sys/rman.h>
   47 #include <sys/socket.h>
   48 #include <sys/sockio.h>
   49 #include <sys/sysctl.h>
   50 #include <machine/bus.h>
   51 
   52 #include <net/ethernet.h>
   53 #include <net/if.h>
   54 #include <net/if_arp.h>
   55 #include <net/if_dl.h>
   56 #include <net/if_media.h>
   57 #include <net/if_mib.h>
   58 #include <net/if_types.h>
   59 
   60 #ifdef INET
   61 #include <netinet/in.h>
   62 #include <netinet/in_systm.h>
   63 #include <netinet/in_var.h>
   64 #include <netinet/ip.h>
   65 #endif
   66 
   67 #include <net/bpf.h>
   68 #include <net/bpfdesc.h>
   69 
   70 #include <dev/mii/mii.h>
   71 #include <dev/mii/miivar.h>
   72 
   73 #include <mips/adm5120/adm5120reg.h>
   74 #include <mips/adm5120/if_admswreg.h>
   75 
   76 #define MAC_BUFLEN      0x07ff
   77 
   78 #define ADMSW_NTXHDESC  4
   79 #define ADMSW_NRXHDESC  32
   80 #define ADMSW_NTXLDESC  32
   81 #define ADMSW_NRXLDESC  32
   82 
   83 #define ADMSW_NTXHDESC_MASK     (ADMSW_NTXHDESC - 1)
   84 #define ADMSW_NRXHDESC_MASK     (ADMSW_NRXHDESC - 1)
   85 #define ADMSW_NTXLDESC_MASK     (ADMSW_NTXLDESC - 1)
   86 #define ADMSW_NRXLDESC_MASK     (ADMSW_NRXLDESC - 1)
   87 
   88 #define ADMSW_NEXTTXH(x)        (((x) + 1) & ADMSW_NTXHDESC_MASK)
   89 #define ADMSW_NEXTRXH(x)        (((x) + 1) & ADMSW_NRXHDESC_MASK)
   90 #define ADMSW_NEXTTXL(x)        (((x) + 1) & ADMSW_NTXLDESC_MASK)
   91 #define ADMSW_NEXTRXL(x)        (((x) + 1) & ADMSW_NRXLDESC_MASK)
   92 
   93 #define ADMSW_IRQ       9
   94 
   95 struct admsw_control_data {
   96         /* The transmit descriptors. */
   97         struct admsw_desc acd_txhdescs[ADMSW_NTXHDESC];
   98 
   99         /* The receive descriptors. */
  100         struct admsw_desc acd_rxhdescs[ADMSW_NRXHDESC];
  101 
  102         /* The transmit descriptors. */
  103         struct admsw_desc acd_txldescs[ADMSW_NTXLDESC];
  104 
  105         /* The receive descriptors. */
  106         struct admsw_desc acd_rxldescs[ADMSW_NRXLDESC];
  107 };
  108 
  109 #define ADMSW_CDOFF(x)          offsetof(struct admsw_control_data, x)
  110 #define ADMSW_CDTXHOFF(x)       ADMSW_CDOFF(acd_txhdescs[(x)])
  111 #define ADMSW_CDTXLOFF(x)       ADMSW_CDOFF(acd_txldescs[(x)])
  112 #define ADMSW_CDRXHOFF(x)       ADMSW_CDOFF(acd_rxhdescs[(x)])
  113 #define ADMSW_CDRXLOFF(x)       ADMSW_CDOFF(acd_rxldescs[(x)])
  114 
  115 struct admsw_descsoft {
  116         struct mbuf *ds_mbuf;
  117         bus_dmamap_t ds_dmamap;
  118         /* Up to 2 segments */
  119         uint32_t ds_addr[2];
  120         uint32_t ds_len[2];
  121         uint32_t ds_nsegs;
  122 };
  123 
  124 /*
  125  * Software state per device.
  126  */
  127 struct admsw_softc {
  128         device_t         sc_dev;        /* generic device information */
  129         uint8_t          sc_enaddr[ETHER_ADDR_LEN];
  130         bus_dma_tag_t    sc_control_dmat;
  131                                         /* bus DMA tag for control structs*/
  132         bus_dma_tag_t    sc_bufs_dmat;  /* bus DMA tag for buffers */
  133         struct ifmedia   sc_ifmedia[SW_DEVS];
  134         int              ndevs;         /* number of IFF_RUNNING interfaces */
  135         struct ifnet    *sc_ifnet[SW_DEVS];
  136         struct callout   sc_watchdog;
  137         int              sc_timer;
  138                                         /* Ethernet common data */
  139         void            *sc_ih;         /* interrupt cookie */
  140         struct resource *irq_res;
  141         struct resource *mem_res;
  142         bus_dmamap_t     sc_cddmamap;   /* control data DMA map */
  143         uint32_t         sc_cddma;
  144         struct admsw_control_data *sc_control_data;
  145 
  146         struct admsw_descsoft sc_txhsoft[ADMSW_NTXHDESC];
  147         struct admsw_descsoft sc_rxhsoft[ADMSW_NRXHDESC];
  148         struct admsw_descsoft sc_txlsoft[ADMSW_NTXLDESC];
  149         struct admsw_descsoft sc_rxlsoft[ADMSW_NRXLDESC];
  150 #define sc_txhdescs     sc_control_data->acd_txhdescs
  151 #define sc_rxhdescs     sc_control_data->acd_rxhdescs
  152 #define sc_txldescs     sc_control_data->acd_txldescs
  153 #define sc_rxldescs     sc_control_data->acd_rxldescs
  154 
  155         int sc_txfree;                  /* number of free Tx descriptors */
  156         int sc_txnext;                  /* next Tx descriptor to use */
  157         int sc_txdirty;                 /* first dirty Tx descriptor */
  158         int sc_rxptr;                   /* next ready Rx descriptor */
  159 };
  160 
  161 #define ADMSW_CDTXHADDR(sc, x)  ((sc)->sc_cddma + ADMSW_CDTXHOFF((x)))
  162 #define ADMSW_CDTXLADDR(sc, x)  ((sc)->sc_cddma + ADMSW_CDTXLOFF((x)))
  163 #define ADMSW_CDRXHADDR(sc, x)  ((sc)->sc_cddma + ADMSW_CDRXHOFF((x)))
  164 #define ADMSW_CDRXLADDR(sc, x)  ((sc)->sc_cddma + ADMSW_CDRXLOFF((x)))
  165 
  166 #define ADMSW_CDTXHSYNC(sc, x, ops)                                     \
  167         bus_dmamap_sync((sc)->sc_control_dmat, (sc)->sc_cddmamap, (ops))
  168 
  169 #define ADMSW_CDTXLSYNC(sc, x, ops)                                     \
  170         bus_dmamap_sync((sc)->sc_control_dmat, (sc)->sc_cddmamap, (ops))
  171 
  172 #define ADMSW_CDRXHSYNC(sc, x, ops)                                     \
  173         bus_dmamap_sync((sc)->sc_control_dmat, (sc)->sc_cddmamap, (ops))
  174 
  175 #define ADMSW_CDRXLSYNC(sc, x, ops)                                     \
  176         bus_dmamap_sync((sc)->sc_control_dmat, (sc)->sc_cddmamap, (ops))
  177 
  178 #define ADMSW_INIT_RXHDESC(sc, x)                               \
  179 do {                                                            \
  180         struct admsw_descsoft *__ds = &(sc)->sc_rxhsoft[(x)];   \
  181         struct admsw_desc *__desc = &(sc)->sc_rxhdescs[(x)];    \
  182         struct mbuf *__m = __ds->ds_mbuf;                       \
  183                                                                 \
  184         __m->m_data = __m->m_ext.ext_buf + 2;                   \
  185         __desc->data = __ds->ds_addr[0] + 2;    \
  186         __desc->cntl = 0;                                       \
  187         __desc->len = min(MCLBYTES - 2, MAC_BUFLEN - 2);        \
  188         __desc->status = 0;                                     \
  189         if ((x) == ADMSW_NRXHDESC - 1)                          \
  190                 __desc->data |= ADM5120_DMA_RINGEND;            \
  191         __desc->data |= ADM5120_DMA_OWN;                        \
  192         ADMSW_CDRXHSYNC((sc), (x), BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \
  193 } while (0)
  194 
  195 #define ADMSW_INIT_RXLDESC(sc, x)                               \
  196 do {                                                            \
  197         struct admsw_descsoft *__ds = &(sc)->sc_rxlsoft[(x)];   \
  198         struct admsw_desc *__desc = &(sc)->sc_rxldescs[(x)];    \
  199         struct mbuf *__m = __ds->ds_mbuf;                       \
  200                                                                 \
  201         __m->m_data = __m->m_ext.ext_buf + 2;                   \
  202         __desc->data = __ds->ds_addr[0] + 2;    \
  203         __desc->cntl = 0;                                       \
  204         __desc->len = min(MCLBYTES - 2, MAC_BUFLEN - 2);        \
  205         __desc->status = 0;                                     \
  206         if ((x) == ADMSW_NRXLDESC - 1)                          \
  207                 __desc->data |= ADM5120_DMA_RINGEND;            \
  208         __desc->data |= ADM5120_DMA_OWN;                        \
  209         ADMSW_CDRXLSYNC((sc), (x), BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \
  210 } while (0)
  211 
  212 void admwdog_attach(struct admsw_softc *);
  213 
  214 #endif /* _IF_ADMSWVAR_H_ */

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