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zynq_cemac.c revision 1.4 
      1 /*	$NetBSD: zynq_cemac.c,v 1.4 2022/10/26 11:31:11 jmcneill Exp $	*/
      2 /*-
      3  * Copyright (c) 2015  Genetec Corporation.  All rights reserved.
      4  * Written by Hashimoto Kenichi for Genetec Corporation.
      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  *
     15  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     16  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     17  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     18  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     19  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     20  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     21  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     22  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     24  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     25  * POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: zynq_cemac.c,v 1.4 2022/10/26 11:31:11 jmcneill Exp $");
     30 
     31 #include "opt_soc.h"
     32 
     33 #include <sys/param.h>
     34 #include <sys/bus.h>
     35 #include <sys/conf.h>
     36 #include <sys/device.h>
     37 #include <sys/kernel.h>
     38 #include <sys/intr.h>
     39 #include <sys/systm.h>
     40 
     41 #include <dev/cadence/cemacreg.h>
     42 #include <dev/cadence/if_cemacvar.h>
     43 
     44 #include <net/if_ether.h>
     45 
     46 #include <dev/fdt/fdtvar.h>
     47 
     48 static const struct device_compatible_entry compat_data[] = {
     49 	{ .compat = "cdns,zynq-gem" },
     50 	DEVICE_COMPAT_EOL
     51 };
     52 
     53 int
     54 cemac_match(device_t parent, cfdata_t cfdata, void *aux)
     55 {
     56 	struct fdt_attach_args * const faa = aux;
     57 
     58 	return of_compatible_match(faa->faa_phandle, compat_data);
     59 }
     60 
     61 void
     62 cemac_attach(device_t parent, device_t self, void *aux)
     63 {
     64 	struct fdt_attach_args * const faa = aux;
     65 	const int phandle = faa->faa_phandle;
     66 	prop_dictionary_t prop = device_properties(self);
     67 	bus_space_handle_t ioh;
     68 	char intrstr[128];
     69 	const char *macaddr;
     70 	bus_addr_t addr;
     71 	bus_size_t size;
     72 	int error, len;
     73 
     74 	if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
     75 		aprint_error(": couldn't get registers\n");
     76 		return;
     77 	}
     78 
     79 	error = bus_space_map(faa->faa_bst, addr, size, 0, &ioh);
     80 	if (error) {
     81 		aprint_error(": failed to map register %#lx@%#lx: %d\n",
     82 		    size, addr, error);
     83 		return;
     84 	}
     85 
     86 	if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) {
     87 		aprint_error(": failed to decode interrupt\n");
     88 		return;
     89 	}
     90 
     91 	if (fdtbus_intr_establish(phandle, 0, IPL_NET, 0, cemac_intr,
     92 				  device_private(self)) == NULL) {
     93 		aprint_error(": failed to establish interrupt on %s\n", intrstr);
     94 		return;
     95 	}
     96 
     97 	macaddr = fdtbus_get_prop(phandle, "local-mac-address", &len);
     98 	if (macaddr != NULL && len == ETHER_ADDR_LEN) {
     99 		prop_dictionary_set_data(prop, "mac-address", macaddr, len);
    100 	}
    101 
    102 	cemac_attach_common(self, faa->faa_bst, ioh, faa->faa_dmat, CEMAC_FLAG_GEM);
    103 	aprint_normal_dev(self, "interrupting on %s\n", intrstr);
    104 }
    105 
    106