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uni-n.c revision 1.7 
      1 /*	$NetBSD: uni-n.c,v 1.7 2017/09/15 21:33:52 macallan Exp $	*/
      2 
      3 /*-
      4  * Copyright (C) 2005 Michael Lorenz.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. The name of the author may not be used to endorse or promote products
     15  *    derived from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 /*
     30  * a driver to match the uni_n node in OF's device tree and attach its children
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: uni-n.c,v 1.7 2017/09/15 21:33:52 macallan Exp $");
     35 
     36 #include <sys/param.h>
     37 #include <sys/systm.h>
     38 #include <sys/kernel.h>
     39 #include <sys/device.h>
     40 
     41 #include <dev/ofw/openfirm.h>
     42 #include <dev/ofw/ofw_pci.h>
     43 
     44 #include <machine/autoconf.h>
     45 
     46 static void uni_n_attach(device_t, device_t, void *);
     47 static int uni_n_match(device_t, cfdata_t, void *);
     48 static int uni_n_print(void *, const char *);
     49 
     50 struct uni_n_softc {
     51 	device_t sc_dev;
     52 	struct powerpc_bus_space sc_memt;
     53 	int sc_node;
     54 };
     55 
     56 CFATTACH_DECL_NEW(uni_n, sizeof(struct uni_n_softc),
     57     uni_n_match, uni_n_attach, NULL, NULL);
     58 
     59 int
     60 uni_n_match(device_t parent, cfdata_t cf, void *aux)
     61 {
     62 	struct confargs *ca = aux;
     63 	char compat[32];
     64 	if ((strcmp(ca->ca_name, "uni-n") != 0) &&
     65 	    (strcmp(ca->ca_name, "u4") != 0))
     66 		return 0;
     67 
     68 	memset(compat, 0, sizeof(compat));
     69 #if 0
     70 	OF_getprop(ca->ca_node, "compatible", compat, sizeof(compat));
     71 	if (strcmp(compat, "uni-north") != 0)
     72 		return 0;
     73 #endif
     74 	return 1;
     75 }
     76 
     77 /*
     78  * Attach all the sub-devices we can find
     79  */
     80 void
     81 uni_n_attach(device_t parent, device_t self, void *aux)
     82 {
     83 	struct uni_n_softc *sc = device_private(self);
     84 	struct confargs *our_ca = aux;
     85 	struct confargs ca;
     86 	int node, child, namelen;
     87 	u_int reg[20];
     88 	int intr[6];
     89 	char name[32];
     90 
     91 	sc->sc_dev = self;
     92 	node = our_ca->ca_node;
     93 	sc->sc_node = node;
     94 	printf(" address 0x%08x\n",our_ca->ca_reg[0]);
     95 
     96 	memset(&sc->sc_memt, 0, sizeof(struct powerpc_bus_space));
     97 	sc->sc_memt.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE;
     98 	if (ofwoea_map_space(RANGE_TYPE_MACIO, RANGE_MEM, node, &sc->sc_memt,
     99 	    "uni-n mem-space") != 0) {
    100 		panic("Can't init uni-n mem tag");
    101 	}
    102 
    103 	for (child = OF_child(node); child; child = OF_peer(child)) {
    104 		namelen = OF_getprop(child, "name", name, sizeof(name));
    105 		if (namelen < 0)
    106 			continue;
    107 		if (namelen >= sizeof(name))
    108 			continue;
    109 
    110 		name[namelen] = 0;
    111 		ca.ca_name = name;
    112 		ca.ca_node = child;
    113 		ca.ca_tag = &sc->sc_memt;
    114 		ca.ca_nreg  = OF_getprop(child, "reg", reg, sizeof(reg));
    115 		ca.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr,
    116 				sizeof(intr));
    117 		if (ca.ca_nintr == -1)
    118 			ca.ca_nintr = OF_getprop(child, "interrupts", intr,
    119 					sizeof(intr));
    120 
    121 		ca.ca_reg = reg;
    122 		ca.ca_intr = intr;
    123 		config_found(self, &ca, uni_n_print);
    124 	}
    125 }
    126 
    127 int
    128 uni_n_print(void *aux, const char *uni_n)
    129 {
    130 	struct confargs *ca = aux;
    131 	if (uni_n)
    132 		aprint_normal("%s at %s", ca->ca_name, uni_n);
    133 
    134 	if (ca->ca_nreg > 0)
    135 		aprint_normal(" address 0x%x", ca->ca_reg[0]);
    136 
    137 	return UNCONF;
    138 }
    139