260 lines
8.1 KiB
C
260 lines
8.1 KiB
C
/*-
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* Copyright (c) 2012,2013 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_device_polling.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/bus.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/types.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/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include <dev/altera/atse/if_atsereg.h>
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/* "device miibus" required. See GENERIC if you get errors here. */
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#include "miibus_if.h"
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MODULE_DEPEND(atse, ether, 1, 1, 1);
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MODULE_DEPEND(atse, miibus, 1, 1, 1);
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/*
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* Device routines for interacting with nexus (probe, attach, detach) & helpers.
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* XXX We should add suspend/resume later.
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*/
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static int
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atse_resource_int(device_t dev, const char *resname, int *v)
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{
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int error;
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error = resource_int_value(device_get_name(dev), device_get_unit(dev),
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resname, v);
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if (error != 0) {
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/* If it does not exist, we fail, so not ingoring ENOENT. */
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device_printf(dev, "could not fetch '%s' hint\n", resname);
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return (error);
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}
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return (0);
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}
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static int
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atse_resource_long(device_t dev, const char *resname, long *v)
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{
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int error;
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error = resource_long_value(device_get_name(dev), device_get_unit(dev),
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resname, v);
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if (error != 0) {
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/* If it does not exist, we fail, so not ingoring ENOENT. */
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device_printf(dev, "could not fetch '%s' hint\n", resname);
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return (error);
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}
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return (0);
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}
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static int
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atse_probe_nexus(device_t dev)
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{
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struct resource *res;
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long l;
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int error, rid;
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/*
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* It is almost impossible to properly probe this device. We must
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* rely on hints being set correctly. So try to get hints and
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* one memory mapping. Must cleanup and do again in attach but
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* should not probe successfully if not able to attach later.
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*/
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error = atse_resource_int(dev, "rx_irq", &rid);
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error += atse_resource_long(dev, "rx_maddr", &l);
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error += atse_resource_long(dev, "rx_msize", &l);
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error += atse_resource_long(dev, "rxc_maddr", &l);
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error += atse_resource_long(dev, "rxc_msize", &l);
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error += atse_resource_int(dev, "tx_irq", &rid);
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error += atse_resource_long(dev, "tx_maddr", &l);
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error += atse_resource_long(dev, "tx_msize", &l);
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error += atse_resource_long(dev, "txc_maddr", &l);
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error += atse_resource_long(dev, "txc_msize", &l);
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if (error != 0)
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return (ENXIO);
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rid = 0;
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res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
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if (res == NULL)
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return (ENXIO);
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bus_release_resource(dev, SYS_RES_MEMORY, rid, res);
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/* Success. */
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device_set_desc(dev, "Altera Triple-Speed Ethernet MegaCore");
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return (BUS_PROBE_NOWILDCARD);
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}
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static int
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atse_attach_nexus(device_t dev)
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{
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struct atse_softc *sc;
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int error;
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sc = device_get_softc(dev);
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sc->atse_dev = dev;
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sc->atse_unit = device_get_unit(dev);
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/* Get RX and TX IRQ and FIFO information from hints. */
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error = atse_resource_int(dev, "rx_irq", &sc->atse_rx_irq);
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error += atse_resource_long(dev, "rx_maddr", &sc->atse_rx_maddr);
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error += atse_resource_long(dev, "rx_msize", &sc->atse_rx_msize);
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error += atse_resource_long(dev, "rxc_maddr", &sc->atse_rxc_maddr);
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error += atse_resource_long(dev, "rxc_msize", &sc->atse_rxc_msize);
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error += atse_resource_int(dev, "tx_irq", &sc->atse_tx_irq);
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error += atse_resource_long(dev, "tx_maddr", &sc->atse_tx_maddr);
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error += atse_resource_long(dev, "tx_msize", &sc->atse_tx_msize);
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error += atse_resource_long(dev, "txc_maddr", &sc->atse_txc_maddr);
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error += atse_resource_long(dev, "txc_msize", &sc->atse_txc_msize);
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if (error != 0)
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return (error);
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/* Avalon-MM, atse management register region. */
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sc->atse_mem_rid = 0;
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sc->atse_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&sc->atse_mem_rid, RF_ACTIVE);
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if (sc->atse_mem_res == NULL) {
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device_printf(dev, "failed to map memory for ctrl region\n");
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return (ENXIO);
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}
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/*
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* (Optional) RX IRQ and memory mapped regions.
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* 0x00: 2 * 32bit FIFO data,
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* 0x20: 8 * 32bit FIFO ctrl, Avalon-ST Sink to Avalon-MM R-Slave.
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*/
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sc->atse_rx_irq_rid = 0;
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sc->atse_rx_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ,
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&sc->atse_rx_irq_rid, sc->atse_rx_irq, sc->atse_rx_irq, 1,
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RF_ACTIVE | RF_SHAREABLE);
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sc->atse_rx_mem_rid = 0;
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sc->atse_rx_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
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&sc->atse_rx_mem_rid, sc->atse_rx_maddr, sc->atse_rx_maddr +
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sc->atse_rx_msize, sc->atse_rx_msize, RF_ACTIVE);
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if (sc->atse_rx_mem_res == NULL) {
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device_printf(dev, "failed to map memory for RX\n");
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goto err;
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}
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sc->atse_rxc_mem_rid = 0;
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sc->atse_rxc_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
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&sc->atse_rxc_mem_rid, sc->atse_rxc_maddr, sc->atse_rxc_maddr +
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sc->atse_rxc_msize, sc->atse_rxc_msize, RF_ACTIVE);
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if (sc->atse_rxc_mem_res == NULL) {
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device_printf(dev, "failed to map memory for RX control\n");
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goto err;
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}
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/*
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* (Optional) TX IRQ and memory mapped regions.
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* 0x00: 2 * 32bit FIFO data,
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* 0x20: 8 * 32bit FIFO ctrl, Avalon-MM W-Slave to Avalon-ST Source.
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*/
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sc->atse_tx_irq_rid = 0;
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sc->atse_tx_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ,
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&sc->atse_tx_irq_rid, sc->atse_tx_irq, sc->atse_tx_irq, 1,
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RF_ACTIVE | RF_SHAREABLE);
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sc->atse_tx_mem_rid = 0;
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sc->atse_tx_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
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&sc->atse_tx_mem_rid, sc->atse_tx_maddr, sc->atse_tx_maddr +
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sc->atse_tx_msize, sc->atse_tx_msize, RF_ACTIVE);
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if (sc->atse_tx_mem_res == NULL) {
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device_printf(dev, "failed to map memory for TX\n");
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goto err;
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}
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sc->atse_txc_mem_rid = 0;
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sc->atse_txc_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
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&sc->atse_txc_mem_rid, sc->atse_txc_maddr, sc->atse_txc_maddr +
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sc->atse_txc_msize, sc->atse_txc_msize, RF_ACTIVE);
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if (sc->atse_txc_mem_res == NULL) {
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device_printf(dev, "failed to map memory for TX control\n");
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goto err;
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}
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error = atse_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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atse_detach_resources(dev);
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return (error);
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}
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static device_method_t atse_methods_nexus[] = {
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/* Device interface */
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DEVMETHOD(device_probe, atse_probe_nexus),
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DEVMETHOD(device_attach, atse_attach_nexus),
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DEVMETHOD(device_detach, atse_detach_dev),
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/* MII interface */
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DEVMETHOD(miibus_readreg, atse_miibus_readreg),
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DEVMETHOD(miibus_writereg, atse_miibus_writereg),
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DEVMETHOD(miibus_statchg, atse_miibus_statchg),
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DEVMETHOD_END
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};
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static driver_t atse_driver_nexus = {
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"atse",
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atse_methods_nexus,
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sizeof(struct atse_softc)
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};
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DRIVER_MODULE(atse, nexus, atse_driver_nexus, atse_devclass, 0, 0);
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DRIVER_MODULE(miibus, atse, miibus_driver, miibus_devclass, 0, 0);
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/* end */
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