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      1 /* $NetBSD: smsh_fdt.c,v 1.4 2021/01/27 03:10:19 thorpej Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2017 Jared McNeill <jmcneill (at) invisible.ca>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __KERNEL_RCSID(0, "$NetBSD: smsh_fdt.c,v 1.4 2021/01/27 03:10:19 thorpej Exp $");
     31 
     32 #include <sys/param.h>
     33 #include <sys/bus.h>
     34 #include <sys/device.h>
     35 #include <sys/systm.h>
     36 #include <sys/kernel.h>
     37 
     38 #include <dev/fdt/fdtvar.h>
     39 
     40 #include <net/if.h>
     41 #include <net/if_ether.h>
     42 #include <net/if_media.h>
     43 
     44 #include <dev/mii/miivar.h>
     45 
     46 #include <dev/ic/lan9118var.h>
     47 #include <dev/ic/lan9118reg.h>
     48 
     49 static int	smsh_fdt_match(device_t, cfdata_t, void *);
     50 static void	smsh_fdt_attach(device_t, device_t, void *);
     51 
     52 static const struct device_compatible_entry compat_data[] = {
     53 	{ .compat = "smsc,lan9118" },
     54 	{ .compat = "smsc,lan9115" },
     55 	DEVICE_COMPAT_EOL
     56 };
     57 
     58 CFATTACH_DECL_NEW(smsh_fdt, sizeof(struct lan9118_softc),
     59 	smsh_fdt_match, smsh_fdt_attach, NULL, NULL);
     60 
     61 static int
     62 smsh_fdt_match(device_t parent, cfdata_t cf, void *aux)
     63 {
     64 	struct fdt_attach_args * const faa = aux;
     65 
     66 	return of_compatible_match(faa->faa_phandle, compat_data);
     67 }
     68 
     69 static void
     70 smsh_fdt_attach(device_t parent, device_t self, void *aux)
     71 {
     72 	struct lan9118_softc * const sc = device_private(self);
     73 	struct fdt_attach_args * const faa = aux;
     74 	const int phandle = faa->faa_phandle;
     75 	const char *enaddr;
     76 	char intrstr[128];
     77 	bus_addr_t addr;
     78 	bus_size_t size;
     79 	int len;
     80 	void *ih;
     81 
     82 	if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
     83 		aprint_error(": missing 'reg' property\n");
     84 		return;
     85 	}
     86 
     87 	if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) {
     88 		aprint_error_dev(self, "failed to decode interrupt\n");
     89 		return;
     90 	}
     91 
     92 	sc->sc_dev = self;
     93 	sc->sc_iot = faa->faa_bst;
     94 	if (bus_space_map(faa->faa_bst, addr, size, 0, &sc->sc_ioh)) {
     95 		aprint_error(": couldn't map device\n");
     96 		return;
     97 	}
     98 
     99 	if (of_hasprop(phandle, "smsc,irq-active-high"))
    100 		sc->sc_flags |= LAN9118_FLAGS_IRQ_ACTHI;
    101 	if (of_hasprop(phandle, "smsc,irq-push-pull"))
    102 		sc->sc_flags |= LAN9118_FLAGS_IRQ_PP;
    103 
    104 	enaddr = fdtbus_get_prop(phandle, "local-mac-address", &len);
    105 	if (enaddr == NULL || len != ETHER_ADDR_LEN)
    106 		enaddr = fdtbus_get_prop(phandle, "mac-address", &len);
    107 	if (enaddr != NULL && len == ETHER_ADDR_LEN) {
    108 		memcpy(sc->sc_enaddr, enaddr, ETHER_ADDR_LEN);
    109 		sc->sc_flags |= LAN9118_FLAGS_NO_EEPROM;
    110 	}
    111 
    112 	if (lan9118_attach(sc) != 0)
    113 		goto unmap;
    114 
    115 	ih = fdtbus_intr_establish_xname(phandle, 0, IPL_NET, 0, lan9118_intr, sc,
    116 	    device_xname(self));
    117 	if (ih == NULL) {
    118 		aprint_error_dev(self, "couldn't install interrupt handler\n");
    119 		goto unmap;
    120 	}
    121 	aprint_normal_dev(self, "interrupting on %s\n", intrstr);
    122 
    123 	return;
    124 
    125 unmap:
    126 	bus_space_unmap(sc->sc_iot, sc->sc_ioh, size);
    127 }
    128