pci bus frontend for hme from netbsd

1 files changed, 189 insertions, 0 deletions

diff --git a/sys/dev/pci/if_hme_pci.c b/sys/dev/pci/if_hme_pci.c
new file mode 100644
index 00000000000..e4682866895
--- /dev/null
+++ b/sys/dev/pci/if_hme_pci.c
@@ -0,0 +1,189 @@
+/*	$OpenBSD: if_hme_pci.c,v 1.1 2001/08/22 21:49:39 jason Exp $	*/
+/*	$NetBSD: if_hme_pci.c,v 1.3 2000/12/28 22:59:13 sommerfeld Exp $	*/
+
+/*
+ * Copyright (c) 2000 Matthew R. Green
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+ */
+
+/*
+ * PCI front-end device driver for the HME ethernet device.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/syslog.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+#include <sys/socket.h>
+
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/if_media.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 <dev/mii/mii.h>
+#include <dev/mii/miivar.h>
+
+#include <machine/autoconf.h>
+#include <machine/cpu.h>
+
+#include <dev/pci/pcivar.h>
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcidevs.h>
+
+#include <dev/ic/hmevar.h>
+
+struct hme_pci_softc {
+	struct	hme_softc	hsc_hme;	/* HME device */
+	bus_space_tag_t		hsc_memt;
+	bus_space_handle_t	hsc_memh;
+	void			*hsc_ih;
+};
+
+int	hmematch_pci __P((struct device *, void *, void *));
+void	hmeattach_pci __P((struct device *, struct device *, void *));
+
+struct cfattach hme_pci_ca = {
+	sizeof(struct hme_pci_softc), hmematch_pci, hmeattach_pci
+};
+
+int
+hmematch_pci(parent, vcf, aux)
+	struct device *parent;
+	void *vcf;
+	void *aux;
+{
+	struct pci_attach_args *pa = aux;
+
+	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && 
+	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_HME)
+		return (1);
+
+	return (0);
+}
+
+void
+hmeattach_pci(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	struct pci_attach_args *pa = aux;
+	struct hme_pci_softc *hsc = (void *)self;
+	struct hme_softc *sc = &hsc->hsc_hme;
+	pci_intr_handle_t intrhandle;
+	/* XXX the following declarations should be elsewhere */
+	extern void myetheraddr __P((u_char *));
+	pcireg_t csr;
+	const char *intrstr;
+	int type;
+
+	/*
+	 * enable io/memory-space accesses.  this is kinda of gross; but
+	 * the hme comes up with neither IO space enabled, or memory space.
+	 */
+	if (pa->pa_memt)
+		pa->pa_flags |= PCI_FLAGS_MEM_ENABLED;
+	if (pa->pa_iot)
+		pa->pa_flags |= PCI_FLAGS_IO_ENABLED;
+	csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
+	if (pa->pa_memt) {
+		type = PCI_MAPREG_TYPE_MEM;
+		csr |= PCI_COMMAND_MEM_ENABLE;
+		sc->sc_bustag = pa->pa_memt;
+	} else {
+		type = PCI_MAPREG_TYPE_IO;
+		csr |= PCI_COMMAND_IO_ENABLE;
+		sc->sc_bustag = pa->pa_iot;
+	}
+	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
+	    csr | PCI_COMMAND_MEM_ENABLE);
+
+	sc->sc_dmatag = pa->pa_dmat;
+
+	sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */
+	/*
+	 * Map five register banks:
+	 *
+	 *	bank 0: HME SEB registers:	+0x0000
+	 *	bank 1: HME ETX registers:	+0x2000
+	 *	bank 2: HME ERX registers:	+0x4000
+	 *	bank 3: HME MAC registers:	+0x6000
+	 *	bank 4: HME MIF registers:	+0x7000
+	 *
+	 */
+
+#define PCI_HME_BASEADDR	0x10
+	if (pci_mapreg_map(pa, PCI_HME_BASEADDR, type, 0,
+	    &hsc->hsc_memt, &hsc->hsc_memh, NULL, NULL, 0) != 0)
+	{
+		printf(": could not map hme registers\n");
+		return;
+	}
+	sc->sc_seb = hsc->hsc_memh;
+	sc->sc_etx = hsc->hsc_memh + 0x2000;
+	sc->sc_erx = hsc->hsc_memh + 0x4000;
+	sc->sc_mac = hsc->hsc_memh + 0x6000;
+	sc->sc_mif = hsc->hsc_memh + 0x7000;
+
+	myetheraddr(sc->sc_enaddr);
+
+	sc->sc_burst = 16;	/* XXX */
+
+	/*
+	 * call the main configure
+	 */
+	hme_config(sc);
+
+	if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
+	    pa->pa_intrline, &intrhandle) != 0) {
+		printf("%s: couldn't map interrupt\n",
+		    sc->sc_dev.dv_xname);
+		return;	/* bus_unmap ? */
+	}	
+	intrstr = pci_intr_string(pa->pa_pc, intrhandle);
+	hsc->hsc_ih = pci_intr_establish(pa->pa_pc, intrhandle, IPL_NET,
+	    hme_intr, sc, self->dv_xname);
+	if (hsc->hsc_ih != NULL) {
+		printf("%s: using %s for interrupt\n",
+		    sc->sc_dev.dv_xname,
+		    intrstr ? intrstr : "unknown interrupt");
+	} else {
+		printf("%s: couldn't establish interrupt",
+		    sc->sc_dev.dv_xname);
+		if (intrstr != NULL)
+			printf(" at %s", intrstr);
+		printf("\n");
+		return;	/* bus_unmap ? */
+	}
+}