Differential D9618 Diff 26827 sys/dev/altera/atse/if_atse_nexus.c

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sys/dev/altera/atse/if_atse_nexus.c

	/*-			/*-
	* Copyright (c) 2012,2013 Bjoern A. Zeeb			* Copyright (c) 2012, 2013 Bjoern A. Zeeb
	* All rights reserved.			* All rights reserved.
	*			*
	* This software was developed by SRI International and the University of			* This software was developed by SRI International and the University of
	* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-11-C-0249)			* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-11-C-0249)
	* ("MRC2"), as part of the DARPA MRC research programme.			* ("MRC2"), as part of the DARPA MRC research programme.
	*			*
	* Redistribution and use in source and binary forms, with or without			* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions			* modification, are permitted provided that the following conditions
	▲ Show 20 Lines • Show All 48 Lines • ▼ Show 20 Lines

	MODULE_DEPEND(atse, ether, 1, 1, 1);			MODULE_DEPEND(atse, ether, 1, 1, 1);
	MODULE_DEPEND(atse, miibus, 1, 1, 1);			MODULE_DEPEND(atse, miibus, 1, 1, 1);

	/*			/*
	* Device routines for interacting with nexus (probe, attach, detach) & helpers.			* Device routines for interacting with nexus (probe, attach, detach) & helpers.
	* XXX We should add suspend/resume later.			* XXX We should add suspend/resume later.
	*/			*/
	static int			static int __unused
	atse_resource_int(device_t dev, const char resname, int v)			atse_resource_int(device_t dev, const char resname, int v)
	{			{
	int error;			int error;

	error = resource_int_value(device_get_name(dev), device_get_unit(dev),			error = resource_int_value(device_get_name(dev), device_get_unit(dev),
	resname, v);			resname, v);
	if (error != 0) {			if (error != 0) {
	/* If it does not exist, we fail, so not ingoring ENOENT. */			/* If it does not exist, we fail, so not ingoring ENOENT. */
	device_printf(dev, "could not fetch '%s' hint\n", resname);			device_printf(dev, "could not fetch '%s' hint\n", resname);
	return (error);			return (error);
	}			}

	return (0);			return (0);
	}			}

	static int			static int __unused
	atse_resource_long(device_t dev, const char resname, long v)			atse_resource_long(device_t dev, const char resname, long v)
	{			{
	int error;			int error;

	error = resource_long_value(device_get_name(dev), device_get_unit(dev),			error = resource_long_value(device_get_name(dev), device_get_unit(dev),
	resname, v);			resname, v);
	if (error != 0) {			if (error != 0) {
	/* If it does not exist, we fail, so not ingoring ENOENT. */			/* If it does not exist, we fail, so not ingoring ENOENT. */
	device_printf(dev, "could not fetch '%s' hint\n", resname);			device_printf(dev, "could not fetch '%s' hint\n", resname);
	return (error);			return (error);
	}			}

	return (0);			return (0);
	}			}

	static int			static int
	atse_probe_nexus(device_t dev)			atse_probe_nexus(device_t dev)
	{			{
	struct resource *res;
	long l;
	int error, rid;

	/*
	* It is almost impossible to properly probe this device. We must
	* rely on hints being set correctly. So try to get hints and
	* one memory mapping. Must cleanup and do again in attach but
	* should not probe successfully if not able to attach later.
	*/
	error = atse_resource_int(dev, "rx_irq", &rid);
	error += atse_resource_long(dev, "rx_maddr", &l);
	error += atse_resource_long(dev, "rx_msize", &l);
	error += atse_resource_long(dev, "rxc_maddr", &l);
	error += atse_resource_long(dev, "rxc_msize", &l);
	error += atse_resource_int(dev, "tx_irq", &rid);
	error += atse_resource_long(dev, "tx_maddr", &l);
	error += atse_resource_long(dev, "tx_msize", &l);
	error += atse_resource_long(dev, "txc_maddr", &l);
	error += atse_resource_long(dev, "txc_msize", &l);
	if (error != 0)
	return (ENXIO);

	rid = 0;
	res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
	if (res == NULL)
	return (ENXIO);
	bus_release_resource(dev, SYS_RES_MEMORY, rid, res);

	/* Success. */
	device_set_desc(dev, "Altera Triple-Speed Ethernet MegaCore");			device_set_desc(dev, "Altera Triple-Speed Ethernet MegaCore");

	return (BUS_PROBE_NOWILDCARD);			return (BUS_PROBE_NOWILDCARD);
	}			}

	static int			static int
	atse_attach_nexus(device_t dev)			atse_attach_nexus(device_t dev)
	{			{
	struct atse_softc *sc;			struct atse_softc *sc;
	int error;			int error;

	sc = device_get_softc(dev);			sc = device_get_softc(dev);
	sc->atse_dev = dev;			sc->atse_dev = dev;
	sc->atse_unit = device_get_unit(dev);			sc->atse_unit = device_get_unit(dev);

	/* Get RX and TX IRQ and FIFO information from hints. */
	error = atse_resource_int(dev, "rx_irq", &sc->atse_rx_irq);
	error += atse_resource_long(dev, "rx_maddr", &sc->atse_rx_maddr);
	error += atse_resource_long(dev, "rx_msize", &sc->atse_rx_msize);
	error += atse_resource_long(dev, "rxc_maddr", &sc->atse_rxc_maddr);
	error += atse_resource_long(dev, "rxc_msize", &sc->atse_rxc_msize);
	error += atse_resource_int(dev, "tx_irq", &sc->atse_tx_irq);
	error += atse_resource_long(dev, "tx_maddr", &sc->atse_tx_maddr);
	error += atse_resource_long(dev, "tx_msize", &sc->atse_tx_msize);
	error += atse_resource_long(dev, "txc_maddr", &sc->atse_txc_maddr);
	error += atse_resource_long(dev, "txc_msize", &sc->atse_txc_msize);
	if (error != 0)
	return (error);

	/* Avalon-MM, atse management register region. */			/* Avalon-MM, atse management register region. */
	sc->atse_mem_rid = 0;			sc->atse_mem_rid = 0;
	sc->atse_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,			sc->atse_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
	&sc->atse_mem_rid, RF_ACTIVE);			&sc->atse_mem_rid, RF_ACTIVE);
	if (sc->atse_mem_res == NULL) {			if (sc->atse_mem_res == NULL) {
	device_printf(dev, "failed to map memory for ctrl region\n");			device_printf(dev, "failed to map memory for ctrl region\n");
	return (ENXIO);			return (ENXIO);
	}			}

	/*
	* (Optional) RX IRQ and memory mapped regions.
	* 0x00: 2 * 32bit FIFO data,
	* 0x20: 8 * 32bit FIFO ctrl, Avalon-ST Sink to Avalon-MM R-Slave.
	*/
	sc->atse_rx_irq_rid = 0;
	sc->atse_rx_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ,
	&sc->atse_rx_irq_rid, sc->atse_rx_irq, sc->atse_rx_irq, 1,
	RF_ACTIVE \| RF_SHAREABLE);

	sc->atse_rx_mem_rid = 0;
	sc->atse_rx_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
	&sc->atse_rx_mem_rid, sc->atse_rx_maddr, sc->atse_rx_maddr +
	sc->atse_rx_msize, sc->atse_rx_msize, RF_ACTIVE);
	if (sc->atse_rx_mem_res == NULL) {
	device_printf(dev, "failed to map memory for RX\n");
	goto err;
	}
	sc->atse_rxc_mem_rid = 0;
	sc->atse_rxc_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
	&sc->atse_rxc_mem_rid, sc->atse_rxc_maddr, sc->atse_rxc_maddr +
	sc->atse_rxc_msize, sc->atse_rxc_msize, RF_ACTIVE);
	if (sc->atse_rxc_mem_res == NULL) {
	device_printf(dev, "failed to map memory for RX control\n");
	goto err;
	}

	/*
	* (Optional) TX IRQ and memory mapped regions.
	* 0x00: 2 * 32bit FIFO data,
	* 0x20: 8 * 32bit FIFO ctrl, Avalon-MM W-Slave to Avalon-ST Source.
	*/
	sc->atse_tx_irq_rid = 0;
	sc->atse_tx_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ,
	&sc->atse_tx_irq_rid, sc->atse_tx_irq, sc->atse_tx_irq, 1,
	RF_ACTIVE \| RF_SHAREABLE);

	sc->atse_tx_mem_rid = 0;
	sc->atse_tx_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
	&sc->atse_tx_mem_rid, sc->atse_tx_maddr, sc->atse_tx_maddr +
	sc->atse_tx_msize, sc->atse_tx_msize, RF_ACTIVE);
	if (sc->atse_tx_mem_res == NULL) {
	device_printf(dev, "failed to map memory for TX\n");
	goto err;
	}
	sc->atse_txc_mem_rid = 0;
	sc->atse_txc_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
	&sc->atse_txc_mem_rid, sc->atse_txc_maddr, sc->atse_txc_maddr +
	sc->atse_txc_msize, sc->atse_txc_msize, RF_ACTIVE);
	if (sc->atse_txc_mem_res == NULL) {
	device_printf(dev, "failed to map memory for TX control\n");
	goto err;
	}

	error = atse_attach(dev);			error = atse_attach(dev);
	if (error)			if (error) {
	goto err;

	return (0);

	err:
	/* Cleanup. */			/* Cleanup. */
	atse_detach_resources(dev);			atse_detach_resources(dev);

	return (error);			return (error);
	}			}

				return (0);
				}

	static device_method_t atse_methods_nexus[] = {			static device_method_t atse_methods_nexus[] = {
	/* Device interface */			/* Device interface */
	DEVMETHOD(device_probe, atse_probe_nexus),			DEVMETHOD(device_probe, atse_probe_nexus),
	DEVMETHOD(device_attach, atse_attach_nexus),			DEVMETHOD(device_attach, atse_attach_nexus),
	DEVMETHOD(device_detach, atse_detach_dev),			DEVMETHOD(device_detach, atse_detach_dev),

	/* MII interface */			/* MII interface */
	DEVMETHOD(miibus_readreg, atse_miibus_readreg),			DEVMETHOD(miibus_readreg, atse_miibus_readreg),
	DEVMETHOD(miibus_writereg, atse_miibus_writereg),			DEVMETHOD(miibus_writereg, atse_miibus_writereg),
	DEVMETHOD(miibus_statchg, atse_miibus_statchg),			DEVMETHOD(miibus_statchg, atse_miibus_statchg),

	DEVMETHOD_END			DEVMETHOD_END
	};			};

	static driver_t atse_driver_nexus = {			static driver_t atse_driver_nexus = {
	"atse",			"atse",
	atse_methods_nexus,			atse_methods_nexus,
	sizeof(struct atse_softc)			sizeof(struct atse_softc)
	};			};

	DRIVER_MODULE(atse, nexus, atse_driver_nexus, atse_devclass, 0, 0);			DRIVER_MODULE(atse, nexus, atse_driver_nexus, atse_devclass, 0, 0);
	DRIVER_MODULE(miibus, atse, miibus_driver, miibus_devclass, 0, 0);			DRIVER_MODULE(miibus, atse, miibus_driver, miibus_devclass, 0, 0);

	/* end */