l2cc_fdt.c revision 1.1
1/* $NetBSD: l2cc_fdt.c,v 1.1 2018/06/20 08:03:55 hkenken 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 1.1 2018/06/20 08:03:55 hkenken 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 44static int l2cc_fdt_match(device_t, cfdata_t, void *); 45static void l2cc_fdt_attach(device_t, device_t, void *); 46 47CFATTACH_DECL_NEW(l2cc_fdt, 0, l2cc_fdt_match, l2cc_fdt_attach, NULL, NULL); 48 49static int 50l2cc_fdt_match(device_t parent, cfdata_t cf, void *aux) 51{ 52 const char * const compatible[] = { 53 "arm,pl310-cache", 54 NULL 55 }; 56 struct fdt_attach_args * const faa = aux; 57 58 return of_compatible(faa->faa_phandle, compatible) >= 0; 59} 60 61static void 62l2cc_fdt_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 bus_space_handle_t bsh; 67 68 bus_addr_t addr; 69 bus_size_t size; 70 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 71 aprint_error(": couldn't get distributor address\n"); 72 return; 73 } 74 if (bus_space_map(faa->faa_bst, addr, size, 0, &bsh)) { 75 aprint_error(": couldn't map registers\n"); 76 return; 77 } 78 79 struct mpcore_attach_args mpcaa = { 80 .mpcaa_name = "arml2cc", 81 .mpcaa_memt = faa->faa_bst, 82 .mpcaa_memh = bsh, 83 .mpcaa_off1 = 0, 84 .mpcaa_off2 = 0, 85 }; 86 87 config_found(self, &mpcaa, NULL); 88} 89