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      1 /*	$NetBSD: l2cc_fdt.c,v 1.5 2021/08/07 16:18:43 thorpej Exp $	*/
      2 /*
      3  * Copyright (c) 2018  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 GENETEC CORPORATION ``AS IS'' AND
     16  * 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 GENETEC CORPORATION
     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: l2cc_fdt.c,v 1.5 2021/08/07 16:18:43 thorpej Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/bus.h>
     33 #include <sys/device.h>
     34 #include <sys/intr.h>
     35 #include <sys/systm.h>
     36 #include <sys/kernel.h>
     37 #include <sys/kmem.h>
     38 
     39 #include <arm/cortex/mpcore_var.h>
     40 
     41 #include <dev/fdt/fdtvar.h>
     42 #include <arm/fdt/arm_fdtvar.h>
     43 
     44 static int l2cc_fdt_match(device_t, cfdata_t, void *);
     45 static void l2cc_fdt_attach(device_t, device_t, void *);
     46 
     47 CFATTACH_DECL_NEW(l2cc_fdt, 0, l2cc_fdt_match, l2cc_fdt_attach, NULL, NULL);
     48 
     49 static const struct device_compatible_entry compat_data[] = {
     50 	{ .compat = "arm,pl310-cache" },
     51 	DEVICE_COMPAT_EOL
     52 };
     53 
     54 static int
     55 l2cc_fdt_match(device_t parent, cfdata_t cf, void *aux)
     56 {
     57 	struct fdt_attach_args * const faa = aux;
     58 
     59 	return of_compatible_match(faa->faa_phandle, compat_data);
     60 }
     61 
     62 static void
     63 l2cc_fdt_attach(device_t parent, device_t self, void *aux)
     64 {
     65 	struct fdt_attach_args * const faa = aux;
     66 	const int phandle = faa->faa_phandle;
     67 	bus_space_handle_t bsh;
     68 
     69 	bus_addr_t addr;
     70 	bus_size_t size;
     71 	if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
     72 		aprint_error(": couldn't get distributor address\n");
     73 		return;
     74 	}
     75 	if (bus_space_map(faa->faa_bst, addr, size, 0, &bsh)) {
     76 		aprint_error(": couldn't map registers\n");
     77 		return;
     78 	}
     79 
     80 	aprint_naive("\n");
     81 	aprint_normal("\n");
     82 
     83 	struct mpcore_attach_args mpcaa = {
     84 		.mpcaa_name = "arml2cc",
     85 		.mpcaa_memt = faa->faa_bst,
     86 		.mpcaa_memh = bsh,
     87 		.mpcaa_off1 = 0,
     88 		.mpcaa_off2 = 0,
     89 	};
     90 
     91 	config_found(self, &mpcaa, NULL, CFARGS_NONE);
     92 }
     93