l2cc_fdt.c revision 1.5
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 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 const struct device_compatible_entry compat_data[] = { 50 { .compat = "arm,pl310-cache" }, 51 DEVICE_COMPAT_EOL 52}; 53 54static int 55l2cc_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 62static void 63l2cc_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