204 lines
6.2 KiB
C
204 lines
6.2 KiB
C
/*-
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* Copyright (c) 2013-2014 Bjoern A. Zeeb
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* All rights reserved.
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*
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* This software was developed by SRI International and the University of
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* Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-11-C-0249
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* ("MRC2"), as part of the DARPA MRC research programme.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This driver is modelled after atse(4). We need to seriously reduce the
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* per-driver code we have to write^wcopy & paste.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <sys/socket.h>
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#include <sys/systm.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <net/if_var.h>
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#include <dev/fdt/fdt_common.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include "if_nf10bmacreg.h"
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static int
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nf10bmac_probe_fdt(device_t dev)
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{
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (ofw_bus_is_compatible(dev, "netfpag10g,nf10bmac")) {
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device_set_desc(dev, "NetFPGA-10G Embedded CPU Ethernet Core");
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return (BUS_PROBE_DEFAULT);
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}
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return (ENXIO);
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}
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static int
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nf10bmac_attach_fdt(device_t dev)
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{
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struct nf10bmac_softc *sc;
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int error;
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sc = device_get_softc(dev);
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sc->nf10bmac_dev = dev;
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sc->nf10bmac_unit = device_get_unit(dev);
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/*
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* FDT lists our resources. For convenience we use three different
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* mappings. We need to attach them in the oder specified in .dts:
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* LOOP (size 0x1f), TX (0x2f), RX (0x2f), INTR (0xf).
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*/
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/*
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* LOOP memory region (this could be a general control region).
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* 0x00: 32/64bit register to enable a Y-"lopback".
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*/
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sc->nf10bmac_ctrl_rid = 0;
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sc->nf10bmac_ctrl_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&sc->nf10bmac_ctrl_rid, RF_ACTIVE);
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if (sc->nf10bmac_ctrl_res == NULL) {
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device_printf(dev, "failed to map memory for CTRL region\n");
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error = ENXIO;
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goto err;
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}
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if (bootverbose)
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device_printf(sc->nf10bmac_dev, "CTRL region at mem %p-%p\n",
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(void *)rman_get_start(sc->nf10bmac_ctrl_res),
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(void *)(rman_get_start(sc->nf10bmac_ctrl_res) +
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rman_get_size(sc->nf10bmac_ctrl_res)));
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/*
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* TX and TX metadata FIFO memory region.
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* 0x00: 32/64bit FIFO data,
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* 0x08: 32/64bit FIFO metadata,
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* 0x10: 32/64bit packet length.
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*/
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sc->nf10bmac_tx_mem_rid = 1;
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sc->nf10bmac_tx_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&sc->nf10bmac_tx_mem_rid, RF_ACTIVE);
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if (sc->nf10bmac_tx_mem_res == NULL) {
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device_printf(dev, "failed to map memory for TX FIFO\n");
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error = ENXIO;
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goto err;
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}
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if (bootverbose)
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device_printf(sc->nf10bmac_dev, "TX FIFO at mem %p-%p\n",
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(void *)rman_get_start(sc->nf10bmac_tx_mem_res),
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(void *)(rman_get_start(sc->nf10bmac_tx_mem_res) +
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rman_get_size(sc->nf10bmac_tx_mem_res)));
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/*
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* RX and RXC metadata FIFO memory region.
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* 0x00: 32/64bit FIFO data,
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* 0x08: 32/64bit FIFO metadata,
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* 0x10: 32/64bit packet length.
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*/
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sc->nf10bmac_rx_mem_rid = 2;
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sc->nf10bmac_rx_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&sc->nf10bmac_rx_mem_rid, RF_ACTIVE);
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if (sc->nf10bmac_rx_mem_res == NULL) {
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device_printf(dev, "failed to map memory for RX FIFO\n");
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error = ENXIO;
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goto err;
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}
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if (bootverbose)
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device_printf(sc->nf10bmac_dev, "RX FIFO at mem %p-%p\n",
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(void *)rman_get_start(sc->nf10bmac_rx_mem_res),
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(void *)(rman_get_start(sc->nf10bmac_rx_mem_res) +
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rman_get_size(sc->nf10bmac_rx_mem_res)));
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/*
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* Interrupt handling registers.
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* 0x00: 32/64bit register to clear (and disable) the RX interrupt.
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* 0x08: 32/64bit register to enable or disable the RX interrupt.
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*/
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sc->nf10bmac_intr_rid = 3;
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sc->nf10bmac_intr_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&sc->nf10bmac_intr_rid, RF_ACTIVE);
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if (sc->nf10bmac_intr_res == NULL) {
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device_printf(dev, "failed to map memory for INTR region\n");
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error = ENXIO;
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goto err;
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}
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if (bootverbose)
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device_printf(sc->nf10bmac_dev, "INTR region at mem %p-%p\n",
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(void *)rman_get_start(sc->nf10bmac_intr_res),
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(void *)(rman_get_start(sc->nf10bmac_intr_res) +
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rman_get_size(sc->nf10bmac_intr_res)));
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/* (Optional) RX and TX IRQ. */
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sc->nf10bmac_rx_irq_rid = 0;
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sc->nf10bmac_rx_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
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&sc->nf10bmac_rx_irq_rid, RF_ACTIVE | RF_SHAREABLE);
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error = nf10bmac_attach(dev);
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if (error)
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goto err;
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return (0);
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err:
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/* Cleanup. */
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nf10bmac_detach_resources(dev);
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return (error);
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}
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static device_method_t nf10bmac_methods_fdt[] = {
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/* Device interface */
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DEVMETHOD(device_probe, nf10bmac_probe_fdt),
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DEVMETHOD(device_attach, nf10bmac_attach_fdt),
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DEVMETHOD(device_detach, nf10bmac_detach_dev),
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DEVMETHOD_END
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};
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static driver_t nf10bmac_driver_fdt = {
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"nf10bmac",
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nf10bmac_methods_fdt,
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sizeof(struct nf10bmac_softc)
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};
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DRIVER_MODULE(nf10bmac, simplebus, nf10bmac_driver_fdt, nf10bmac_devclass, 0,0);
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/* end */
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