if_atse_fdt.c

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    1 /*-
    2  * Copyright (c) 2013 Bjoern A. Zeeb
    3  * All rights reserved.
    4  *
    5  * This software was developed by SRI International and the University of
    6  * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-11-C-0249)
    7  * ("MRC2"), as part of the DARPA MRC research programme.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD: releng/11.0/sys/dev/altera/atse/if_atse_fdt.c 261410 2014-02-02 19:17:28Z ian $");
   33 
   34 #include <sys/param.h>
   35 #include <sys/bus.h>
   36 #include <sys/kernel.h>
   37 #include <sys/module.h>
   38 #include <sys/rman.h>
   39 #include <sys/socket.h>
   40 #include <sys/systm.h>
   41 
   42 #include <machine/bus.h>
   43 #include <machine/resource.h>
   44 
   45 #include <net/ethernet.h>
   46 #include <net/if.h>
   47 #include <net/if_media.h>
   48 #include <net/if_var.h>
   49 
   50 #include <dev/mii/mii.h>
   51 #include <dev/mii/miivar.h>
   52 
   53 
   54 #include <dev/fdt/fdt_common.h>
   55 #include <dev/ofw/openfirm.h>
   56 #include <dev/ofw/ofw_bus.h>
   57 #include <dev/ofw/ofw_bus_subr.h>
   58 
   59 #include <dev/altera/atse/if_atsereg.h>
   60 
   61 /* "device miibus" required.  See GENERIC if you get errors here. */
   62 #include "miibus_if.h"
   63 
   64 static int
   65 atse_probe_fdt(device_t dev)
   66 {
   67 
   68         if (!ofw_bus_status_okay(dev))
   69                 return (ENXIO);
   70 
   71         if (ofw_bus_is_compatible(dev, "altera,atse")) {
   72                 device_set_desc(dev, "Altera Triple-Speed Ethernet MegaCore");
   73                 return (BUS_PROBE_DEFAULT);
   74         }
   75         return (ENXIO);
   76 }
   77 
   78 static int
   79 atse_attach_fdt(device_t dev)
   80 {
   81         struct atse_softc *sc;
   82         int error;
   83 
   84         sc = device_get_softc(dev);
   85         sc->atse_dev = dev;
   86         sc->atse_unit = device_get_unit(dev);
   87 
   88         /*
   89          * FDT has the list of our resources.  Given we are using multiple
   90          * memory regions and possibly multiple interrupts, we need to attach
   91          * them in the order specified in .dts:
   92          * MAC, RX and RXC FIFO, TX and TXC FIFO; RX INTR, TX INTR.
   93          */
   94 
   95         /* MAC: Avalon-MM, atse management register region. */
   96         sc->atse_mem_rid = 0;
   97         sc->atse_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
   98             &sc->atse_mem_rid, RF_ACTIVE);
   99         if (sc->atse_mem_res == NULL) {
  100                 device_printf(dev, "failed to map memory for ctrl region\n");
  101                 error = ENXIO;
  102                 goto err;
  103         }
  104         if (bootverbose)
  105                 device_printf(sc->atse_dev, "MAC ctrl region at mem %p-%p\n",
  106                     (void *)rman_get_start(sc->atse_mem_res),
  107                     (void *)(rman_get_start(sc->atse_mem_res) +
  108                     rman_get_size(sc->atse_mem_res)));
  109 
  110         /*
  111          * RX and RXC FIFO memory regions.
  112          * 0x00: 2 * 32bit FIFO data,
  113          * 0x20: 8 * 32bit FIFO ctrl, Avalon-ST Sink to Avalon-MM R-Slave.
  114          */
  115         sc->atse_rx_mem_rid = 1;
  116         sc->atse_rx_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
  117             &sc->atse_rx_mem_rid, RF_ACTIVE);
  118         if (sc->atse_rx_mem_res == NULL) {
  119                 device_printf(dev, "failed to map memory for RX FIFO\n");
  120                 error = ENXIO;
  121                 goto err;
  122         }
  123         if (bootverbose)
  124                 device_printf(sc->atse_dev, "RX FIFO at mem %p-%p\n",
  125                     (void *)rman_get_start(sc->atse_rx_mem_res),
  126                     (void *)(rman_get_start(sc->atse_rx_mem_res) +
  127                     rman_get_size(sc->atse_rx_mem_res)));
  128 
  129         sc->atse_rxc_mem_rid = 2;
  130         sc->atse_rxc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
  131             &sc->atse_rxc_mem_rid, RF_ACTIVE);
  132         if (sc->atse_rxc_mem_res == NULL) {
  133                 device_printf(dev, "failed to map memory for RXC FIFO\n");
  134                 error = ENXIO;
  135                 goto err;
  136         }
  137         if (bootverbose)
  138                 device_printf(sc->atse_dev, "RXC FIFO at mem %p-%p\n",
  139                     (void *)rman_get_start(sc->atse_rxc_mem_res),
  140                     (void *)(rman_get_start(sc->atse_rxc_mem_res) +
  141                     rman_get_size(sc->atse_rxc_mem_res)));
  142 
  143         /*
  144          * TX and TXC FIFO memory regions.
  145          * 0x00: 2 * 32bit FIFO data,
  146          * 0x20: 8 * 32bit FIFO ctrl, Avalon-MM W-Slave to Avalon-ST Source.
  147          */
  148         sc->atse_tx_mem_rid = 3;
  149         sc->atse_tx_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
  150             &sc->atse_tx_mem_rid, RF_ACTIVE);
  151         if (sc->atse_tx_mem_res == NULL) {
  152                 device_printf(dev, "failed to map memory for TX FIFO\n");
  153                 error = ENXIO;
  154                 goto err;
  155         }
  156         if (bootverbose)
  157                 device_printf(sc->atse_dev, "TX FIFO at mem %p-%p\n",
  158                     (void *)rman_get_start(sc->atse_tx_mem_res),
  159                     (void *)(rman_get_start(sc->atse_tx_mem_res) +
  160                     rman_get_size(sc->atse_tx_mem_res)));
  161 
  162         sc->atse_txc_mem_rid = 4;
  163         sc->atse_txc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
  164             &sc->atse_txc_mem_rid, RF_ACTIVE);
  165         if (sc->atse_txc_mem_res == NULL) {
  166                 device_printf(dev, "failed to map memory for TXC FIFO\n");
  167                 error = ENXIO;
  168                 goto err;
  169         }
  170         if (bootverbose)
  171                 device_printf(sc->atse_dev, "TXC FIFO at mem %p-%p\n",
  172                     (void *)rman_get_start(sc->atse_txc_mem_res),
  173                     (void *)(rman_get_start(sc->atse_txc_mem_res) +
  174                     rman_get_size(sc->atse_txc_mem_res)));
  175 
  176         /* (Optional) RX and TX IRQ. */
  177         sc->atse_rx_irq_rid = 0;
  178         sc->atse_rx_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
  179             &sc->atse_rx_irq_rid, RF_ACTIVE | RF_SHAREABLE);
  180         sc->atse_tx_irq_rid = 1;
  181         sc->atse_tx_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
  182             &sc->atse_tx_irq_rid, RF_ACTIVE | RF_SHAREABLE);
  183 
  184         error = atse_attach(dev);
  185         if (error)
  186                 goto err;
  187 
  188         return (0);
  189 
  190 err:
  191         /* Cleanup. */
  192         atse_detach_resources(dev);
  193 
  194         return (error);
  195 }
  196 
  197 static device_method_t atse_methods_fdt[] = {
  198         /* Device interface */
  199         DEVMETHOD(device_probe,         atse_probe_fdt),
  200         DEVMETHOD(device_attach,        atse_attach_fdt),
  201         DEVMETHOD(device_detach,        atse_detach_dev),
  202 
  203         /* MII interface */
  204         DEVMETHOD(miibus_readreg,       atse_miibus_readreg),
  205         DEVMETHOD(miibus_writereg,      atse_miibus_writereg),
  206         DEVMETHOD(miibus_statchg,       atse_miibus_statchg),
  207 
  208         DEVMETHOD_END
  209 };
  210 
  211 static driver_t atse_driver_fdt = {
  212         "atse",
  213         atse_methods_fdt,
  214         sizeof(struct atse_softc)
  215 };
  216 
  217 DRIVER_MODULE(atse, simplebus, atse_driver_fdt, atse_devclass, 0, 0);
  218 DRIVER_MODULE(miibus, atse, miibus_driver, miibus_devclass, 0, 0);
  219 
  220 /* end */

Cache object: 80fdcd7b4bca92a702f4d81454cfa49b

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FreeBSD/Linux Kernel Cross Reference sys/dev/altera/atse/if_atse_fdt.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/altera/atse/if_atse_fdt.c