/*	$OpenBSD: if_rl_pci.c,v 1.2 2001/04/13 15:58:44 aaron Exp $ */

/*
 * Copyright (c) 1997, 1998
 *	Bill Paul <wpaul@ctr.columbia.edu>.  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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Bill Paul.
 * 4. Neither the name of the author nor the names of any co-contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
 * 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 "bpfilter.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/device.h>
#include <sys/timeout.h>

#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_types.h>

#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_ether.h>
#endif

#include <net/if_media.h>

#if NBPFILTER > 0
#include <net/bpf.h>
#endif

#include <vm/vm.h>              /* for vtophys */
#include <vm/pmap.h>            /* for vtophys */
#include <vm/vm_kern.h>
#include <vm/vm_extern.h>
#include <machine/bus.h>

#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>

/*
 * Default to using PIO access for this driver. On SMP systems,
 * there appear to be problems with memory mapped mode: it looks like
 * doing too many memory mapped access back to back in rapid succession
 * can hang the bus. I'm inclined to blame this on crummy design/construction
 * on the part of RealTek. Memory mapped mode does appear to work on
 * uniprocessor systems though.
 */
#define RL_USEIOSPACE

#include <dev/ic/rtl81x9reg.h>

int rl_pci_match	__P((struct device *, void *, void *));
void rl_pci_attach	__P((struct device *, struct device *, void *));

struct cfattach rl_pci_ca = {
	sizeof(struct rl_softc), rl_pci_match, rl_pci_attach,
};

struct rl_type rl_pci_devs[] = {
	{ PCI_VENDOR_ACCTON, PCI_PRODUCT_ACCTON_5030		},
	{ PCI_VENDOR_ADDTRON, PCI_PRODUCT_ADDTRON_8139		},
	{ PCI_VENDOR_DELTA, PCI_PRODUCT_DELTA_8139		},
	{ PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_530TXPLUS		},
	{ PCI_VENDOR_NORTEL, PCI_PRODUCT_NORTEL_BS21		},
	{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8129	},
	{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8139	},
	{ 0, 0 }
};

int
rl_pci_match(parent, match, aux)
	struct device *parent;
	void *match;
	void *aux;
{
	struct pci_attach_args *pa = (struct pci_attach_args *)aux;
	struct rl_type *t;  
        
	for (t = rl_pci_devs; t->rl_vid != 0; t++) {
		if ((PCI_VENDOR(pa->pa_id) == t->rl_vid) &&
		    (PCI_PRODUCT(pa->pa_id) == t->rl_did))
			return (1);
	}
	return (0);
}

void
rl_pci_attach(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	struct rl_softc *sc = (struct rl_softc *)self;
	struct pci_attach_args *pa = aux;
	pci_chipset_tag_t pc = pa->pa_pc;
	pci_intr_handle_t ih;
	const char *intrstr = NULL;
	bus_addr_t iobase;
	bus_size_t iosize;
	u_int32_t command;

	command = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);

#ifdef RL_USEIOSPACE
	if (!(command & PCI_COMMAND_IO_ENABLE)) {
		printf(": failed to enable i/o ports\n");
		return;
	}

	/*
	 * Map control/status registers.
	 */
	if (pci_io_find(pc, pa->pa_tag, RL_PCI_LOIO, &iobase, &iosize)) {
		printf(": can't find i/o space\n");
		return;
	}
	if (bus_space_map(pa->pa_iot, iobase, iosize, 0, &sc->rl_bhandle)) {
		printf(": can't map i/o space\n");
		return;
	}
	sc->rl_btag = pa->pa_iot;
#else
	if (!(command & PCI_COMMAND_MEM_ENABLE)) {
		printf(": failed to enable memory mapping\n");
		return;
	}
	if (pci_mem_find(pc, pa->pa_tag, RL_PCI_LOMEM, &iobase, &iosize, NULL)){
		printf(": can't find mem space\n");
		return;
	}
	if (bus_space_map(pa->pa_memt, iobase, iosize, 0, &sc->rl_bhandle)) {
		printf(": can't map mem space\n");
		return;
	}
	sc->rl_btag = pa->pa_memt;
#endif

	/*
	 * Allocate our interrupt.
	 */
	if (pci_intr_map(pc, pa->pa_intrtag, pa->pa_intrpin,
	    pa->pa_intrline, &ih)) {
		printf(": couldn't map interrupt\n");
		return;
	}

	intrstr = pci_intr_string(pc, ih);
	sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, rl_intr, sc,
	    self->dv_xname);
	if (sc->sc_ih == NULL) {
		printf(": couldn't establish interrupt");
		if (intrstr != NULL)
			printf(" at %s", intrstr);
		printf("\n");
		return;
	}
	printf(": %s", intrstr);

	sc->sc_dmat = pa->pa_dmat;

	rl_attach(sc);
}