1 /* $NetBSD: mainbus.c,v 1.2 2021/02/15 22:39:46 reinoud Exp $ */ 2 3 /*- 4 * Copyright (c) 2021 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Simon Burge. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.2 2021/02/15 22:39:46 reinoud Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/device.h> 37 38 #include <evbmips/mipssim/autoconf.h> 39 #include <evbmips/mipssim/mipssimreg.h> 40 #include <evbmips/mipssim/mipssimvar.h> 41 42 static int mainbus_match(device_t, cfdata_t, void *); 43 static void mainbus_attach(device_t, device_t, void *); 44 static int mainbus_print(void *, const char *); 45 46 CFATTACH_DECL_NEW(mainbus, 0, 47 mainbus_match, mainbus_attach, NULL, NULL); 48 49 /* There can be only one. */ 50 static int mainbus_found; 51 52 struct mainbusdev { 53 const char *md_name; 54 paddr_t md_addr; 55 int md_irq; 56 }; 57 58 static struct mainbusdev mainbusdevs[] = { 59 { "cpu", }, 60 { "com", MIPSSIM_UART0_ADDR, 2 }, 61 #ifdef notyet 62 { "mipsnet", MIPSSIM_MIPSNET0_ADDR, 0 }, 63 #endif 64 { NULL, } 65 }; 66 67 static int 68 mainbus_match(device_t parent, cfdata_t match, void *aux) 69 { 70 71 if (mainbus_found) 72 return (0); 73 74 return (1); 75 } 76 77 static void 78 mainbus_attach(device_t parent, device_t self, void *aux) 79 { 80 struct mainbus_attach_args maa; 81 struct mipssim_config *mcp = &mipssim_configuration; 82 const struct mainbusdev *md; 83 84 mainbus_found = 1; 85 printf("\n"); 86 87 /* attach children */ 88 for (md = mainbusdevs; md->md_name != NULL; md++) { 89 maa.ma_name = md->md_name; 90 maa.ma_addr = md->md_addr; 91 maa.ma_irq = md->md_irq; 92 maa.ma_iot = &mcp->mc_iot; 93 maa.ma_dmat = &mcp->mc_dmat; 94 config_found_ia(self, "mainbus", &maa, mainbus_print); 95 } 96 97 /* attach virtio children */ 98 for (int i = 0; i < VIRTIO_NUM_TRANSPORTS; i++) { 99 maa.ma_name = "virtio"; 100 maa.ma_addr = MIPSSIM_VIRTIO_ADDR + VIRTIO_STRIDE * i; 101 maa.ma_irq = 1; 102 maa.ma_iot = &mcp->mc_iot; 103 maa.ma_dmat = &mcp->mc_dmat; 104 config_found_ia(self, "mainbus", &maa, mainbus_print); 105 } 106 } 107 108 static int 109 mainbus_print(void *aux, const char *pnp) 110 { 111 112 return (QUIET); 113 } 114