b8f915ab24
xdma(4) interface. This allows us to switch between Altera mSGDMA or SoftDMA engines used by atse(4) device. This also makes atse(4) driver become 25% smaller. Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D9618
148 lines
4.2 KiB
C
148 lines
4.2 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2013 Bjoern A. Zeeb
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by SRI International and the University of
|
|
* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-11-C-0249)
|
|
* ("MRC2"), as part of the DARPA MRC research programme.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/rman.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/resource.h>
|
|
|
|
#include <net/ethernet.h>
|
|
#include <net/if.h>
|
|
#include <net/if_media.h>
|
|
#include <net/if_var.h>
|
|
|
|
#include <dev/mii/mii.h>
|
|
#include <dev/mii/miivar.h>
|
|
|
|
#include <dev/fdt/fdt_common.h>
|
|
#include <dev/ofw/openfirm.h>
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/ofw/ofw_bus_subr.h>
|
|
|
|
#include <dev/altera/atse/if_atsereg.h>
|
|
|
|
/* "device miibus" required. See GENERIC if you get errors here. */
|
|
#include "miibus_if.h"
|
|
|
|
static int
|
|
atse_probe_fdt(device_t dev)
|
|
{
|
|
|
|
if (!ofw_bus_status_okay(dev))
|
|
return (ENXIO);
|
|
|
|
if (!ofw_bus_is_compatible(dev, "altera,atse")) {
|
|
return (ENXIO);
|
|
}
|
|
|
|
device_set_desc(dev, "Altera Triple-Speed Ethernet MegaCore");
|
|
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
|
|
static int
|
|
atse_attach_fdt(device_t dev)
|
|
{
|
|
struct atse_softc *sc;
|
|
int error;
|
|
|
|
sc = device_get_softc(dev);
|
|
sc->atse_dev = dev;
|
|
sc->atse_unit = device_get_unit(dev);
|
|
|
|
/*
|
|
* FDT has the list of our resources. Given we are using multiple
|
|
* memory regions and possibly multiple interrupts, we need to attach
|
|
* them in the order specified in .dts:
|
|
* MAC, RX and RXC FIFO, TX and TXC FIFO; RX INTR, TX INTR.
|
|
*/
|
|
|
|
/* MAC: Avalon-MM, atse management register region. */
|
|
sc->atse_mem_rid = 0;
|
|
sc->atse_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
|
|
&sc->atse_mem_rid, RF_ACTIVE);
|
|
if (sc->atse_mem_res == NULL) {
|
|
device_printf(dev, "failed to map memory for ctrl region\n");
|
|
/* Cleanup. */
|
|
atse_detach_resources(dev);
|
|
|
|
return (ENXIO);
|
|
}
|
|
if (bootverbose)
|
|
device_printf(sc->atse_dev, "MAC ctrl region at mem %p-%p\n",
|
|
(void *)rman_get_start(sc->atse_mem_res),
|
|
(void *)(rman_get_start(sc->atse_mem_res) +
|
|
rman_get_size(sc->atse_mem_res)));
|
|
|
|
error = atse_attach(dev);
|
|
if (error) {
|
|
/* Cleanup. */
|
|
atse_detach_resources(dev);
|
|
|
|
return (error);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static device_method_t atse_methods_fdt[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, atse_probe_fdt),
|
|
DEVMETHOD(device_attach, atse_attach_fdt),
|
|
DEVMETHOD(device_detach, atse_detach_dev),
|
|
|
|
/* MII interface */
|
|
DEVMETHOD(miibus_readreg, atse_miibus_readreg),
|
|
DEVMETHOD(miibus_writereg, atse_miibus_writereg),
|
|
DEVMETHOD(miibus_statchg, atse_miibus_statchg),
|
|
|
|
DEVMETHOD_END
|
|
};
|
|
|
|
static driver_t atse_driver_fdt = {
|
|
"atse",
|
|
atse_methods_fdt,
|
|
sizeof(struct atse_softc)
|
|
};
|
|
|
|
DRIVER_MODULE(atse, simplebus, atse_driver_fdt, atse_devclass, 0, 0);
|
|
DRIVER_MODULE(miibus, atse, miibus_driver, miibus_devclass, 0, 0);
|