freebsd-dev/sys/mips/rmi/iodi.c

/*-
 * Copyright (c) 2003-2009 RMI Corporation
 * All rights reserved.
 *
 * 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.
 * 3. Neither the name of RMI Corporation, nor the names of its contributors,
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * 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.
 *
 * RMI_BSD
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#define __RMAN_RESOURCE_VISIBLE
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/reboot.h>
#include <sys/rman.h>
#include <sys/types.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <sys/interrupt.h>
#include <sys/module.h>

#include <machine/cpu.h>
#include <machine/bus.h>
#include <machine/param.h>
#include <machine/intr_machdep.h>
#include <machine/clock.h>	/* for DELAY */
#include <machine/resource.h>

#include <mips/rmi/board.h>
#include <mips/rmi/pic.h>
#include <mips/rmi/interrupt.h>
#include <mips/rmi/msgring.h>
#include <mips/rmi/iomap.h>
#include <mips/rmi/rmi_mips_exts.h>

#include <mips/rmi/dev/xlr/atx_cpld.h>
#include <mips/rmi/dev/xlr/xgmac_mdio.h>

extern bus_space_tag_t uart_bus_space_mem;

static struct resource *
iodi_alloc_resource(device_t, device_t, int, int *,
    u_long, u_long, u_long, u_int);

static int
iodi_activate_resource(device_t, device_t, int, int,
    struct resource *);
static int
iodi_setup_intr(device_t, device_t, struct resource *, int,
    driver_filter_t *, driver_intr_t *, void *, void **);

struct iodi_softc *iodi_softc;	/* There can be only one. */

/*
 * We will manage the Flash/PCMCIA devices in IODI for now.
 * The NOR flash, Compact flash etc. which can be connected on 
 * various chip selects on the peripheral IO, should have a 
 * separate bus later.
 */
static void
bridge_pcmcia_ack(int irq)
{
	xlr_reg_t *mmio = xlr_io_mmio(XLR_IO_FLASH_OFFSET);

	xlr_write_reg(mmio, 0x60, 0xffffffff);
}

static int
iodi_setup_intr(device_t dev, device_t child,
    struct resource *ires, int flags, driver_filter_t * filt,
    driver_intr_t *intr, void *arg, void **cookiep)
{
	const char *name = device_get_name(child);

	if (strcmp(name, "uart") == 0) {
		/* FIXME uart 1? */
		cpu_establish_hardintr("uart", filt, intr, arg,
		    PIC_UART_0_IRQ, flags, cookiep);
		pic_setup_intr(PIC_IRT_UART_0_INDEX, PIC_UART_0_IRQ, 0x1, 0);
	} else if (strcmp(name, "rge") == 0 || strcmp(name, "nlge") == 0) {
		int irq;

		/* This is a hack to pass in the irq */
		irq = (intptr_t)ires->__r_i;
		cpu_establish_hardintr("rge", filt, intr, arg, irq, flags,
		    cookiep);
		pic_setup_intr(irq - PIC_IRQ_BASE, irq, 0x1, 0);
	} else if (strcmp(name, "ehci") == 0) {
		cpu_establish_hardintr("ehci", filt, intr, arg, PIC_USB_IRQ, flags,
		    cookiep);
		pic_setup_intr(PIC_USB_IRQ - PIC_IRQ_BASE, PIC_USB_IRQ, 0x1, 0);
	} else if (strcmp(name, "ata") == 0) {
		xlr_establish_intr("ata", filt, intr, arg, PIC_PCMCIA_IRQ, flags,
		    cookiep, bridge_pcmcia_ack);
		pic_setup_intr(PIC_PCMCIA_IRQ - PIC_IRQ_BASE, PIC_PCMCIA_IRQ, 0x1, 0);
	}
	return (0);
}

static struct resource *
iodi_alloc_resource(device_t bus, device_t child, int type, int *rid,
    u_long start, u_long end, u_long count, u_int flags)
{
	struct resource *res = malloc(sizeof(*res), M_DEVBUF, M_WAITOK);
	int unit;

#ifdef DEBUG
	switch (type) {
	case SYS_RES_IRQ:
		device_printf(bus, "IRQ resource - for %s %lx-%lx\n",
		    device_get_nameunit(child), start, end);
		break;

	case SYS_RES_IOPORT:
		device_printf(bus, "IOPORT resource - for %s %lx-%lx\n",
		    device_get_nameunit(child), start, end);
		break;

	case SYS_RES_MEMORY:
		device_printf(bus, "MEMORY resource - for %s %lx-%lx\n",
		    device_get_nameunit(child), start, end);
		break;
	}
#endif

	if (strcmp(device_get_name(child), "uart") == 0) {
		if ((unit = device_get_unit(child)) == 0) {	/* uart 0 */
			res->r_bushandle = (xlr_io_base + XLR_IO_UART_0_OFFSET);
		} else if (unit == 1) {
			res->r_bushandle = (xlr_io_base + XLR_IO_UART_1_OFFSET);
		} else
			printf("%s: Unknown uart unit\n", __FUNCTION__);

		res->r_bustag = uart_bus_space_mem;
	} else if (strcmp(device_get_name(child), "ehci") == 0) {
		res->r_bushandle = MIPS_PHYS_TO_KSEG1(0x1ef24000);
		res->r_bustag = rmi_pci_bus_space;
	} else if (strcmp(device_get_name(child), "cfi") == 0) {
		res->r_bushandle = MIPS_PHYS_TO_KSEG1(0x1c000000);
		res->r_bustag = 0;
	} else if (strcmp(device_get_name(child), "ata") == 0) {
		res->r_bushandle = MIPS_PHYS_TO_KSEG1(0x1d000000);
		res->r_bustag = rmi_pci_bus_space;  /* byte swapping (not really PCI) */
	}
	/* res->r_start = *rid; */
	return (res);
}

static int
iodi_activate_resource(device_t bus, device_t child, int type, int rid,
    struct resource *r)
{
	return (0);
}

/* prototypes */
static int iodi_probe(device_t);
static int iodi_attach(device_t);
static int iodi_detach(device_t);
static void iodi_identify(driver_t *, device_t);

int
iodi_probe(device_t dev)
{
	return 0;
}

void
iodi_identify(driver_t * driver, device_t parent)
{

	BUS_ADD_CHILD(parent, 0, "iodi", 0);
}

int
iodi_attach(device_t dev)
{
	device_t tmpd;
	int i;

	/*
	 * Attach each devices
	 */
	device_add_child(dev, "uart", 0);
	device_add_child(dev, "xlr_i2c", 0);
	device_add_child(dev, "pcib", 0);

	if (xlr_board_info.usb)
		device_add_child(dev, "ehci", 0);

	if (xlr_board_info.cfi)
		device_add_child(dev, "cfi", 0);

	if (xlr_board_info.ata)
		device_add_child(dev, "ata", 0);

	if (xlr_board_info.gmac_block[0].enabled) {
		tmpd = device_add_child(dev, "rge", 0);
		device_set_ivars(tmpd, &xlr_board_info.gmac_block[0]);

		tmpd = device_add_child(dev, "rge", 1);
		device_set_ivars(tmpd, &xlr_board_info.gmac_block[0]);

		tmpd = device_add_child(dev, "rge", 2);
		device_set_ivars(tmpd, &xlr_board_info.gmac_block[0]);

		tmpd = device_add_child(dev, "rge", 3);
		device_set_ivars(tmpd, &xlr_board_info.gmac_block[0]);
	}
	if (xlr_board_info.gmac_block[1].enabled) {
		if (xlr_board_info.gmac_block[1].type == XLR_GMAC) {
			tmpd = device_add_child(dev, "rge", 4);
			device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);

			tmpd = device_add_child(dev, "rge", 5);
			device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);

			if (xlr_board_info.gmac_block[1].enabled & 0x4) {
				tmpd = device_add_child(dev, "rge", 6);
				device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);
			}

			if (xlr_board_info.gmac_block[1].enabled & 0x8) {
				tmpd = device_add_child(dev, "rge", 7);
				device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);
			}
		} else if (xlr_board_info.gmac_block[1].type == XLR_XGMAC) {
#if 0				/* XGMAC not yet */
			tmpd = device_add_child(dev, "rge", 4);
			device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);

			tmpd = device_add_child(dev, "rge", 5);
			device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);
#endif
		} else 
			device_printf(dev, "Unknown type of gmac 1\n"); 
	}

	/* This is to add the new GMAC driver. The above adds the old driver,
	   which has been retained for now as the new driver is stabilized.
	   The new driver is enabled with "option nlge". Make sure that only
	   one of rge or nlge is enabled in the conf file. */
	for (i = 0; i < 3; i++) {
		if (xlr_board_info.gmac_block[i].enabled == 0)
			continue;
		tmpd = device_add_child(dev, "nlna", i);
		device_set_ivars(tmpd, &xlr_board_info.gmac_block[i]);
	}
	bus_generic_probe(dev);
	bus_generic_attach(dev);
	return 0;
}

int
iodi_detach(device_t dev)
{
	device_t nlna_dev;
	int error, i, ret;

	error = 0;
	ret = 0;
	for (i = 0; i < 3; i++) {
		nlna_dev = device_find_child(dev, "nlna", i);
		if (nlna_dev != NULL)
			error = bus_generic_detach(nlna_dev);
		if (error)
			ret = error;
	}
	return ret;
}

static device_method_t iodi_methods[] = {
	DEVMETHOD(device_probe, iodi_probe),
	DEVMETHOD(device_attach, iodi_attach),
	DEVMETHOD(device_detach, iodi_detach),
	DEVMETHOD(device_identify, iodi_identify),
	DEVMETHOD(bus_alloc_resource, iodi_alloc_resource),
	DEVMETHOD(bus_activate_resource, iodi_activate_resource),
	DEVMETHOD(bus_setup_intr, iodi_setup_intr),
	{0, 0},
};

static driver_t iodi_driver = {
	"iodi",
	iodi_methods,
	1			/* no softc */
};
static devclass_t iodi_devclass;

DRIVER_MODULE(iodi, nexus, iodi_driver, iodi_devclass, 0, 0);