exb.c revision 1.5
1 1.5 thorpej /* $Id: exb.c,v 1.5 2021/08/07 16:19:03 thorpej Exp $ */ 2 1.2 uebayasi 3 1.2 uebayasi /*- 4 1.2 uebayasi * Copyright (c) 2010 The NetBSD Foundation, Inc. 5 1.2 uebayasi * All rights reserved. 6 1.2 uebayasi * 7 1.2 uebayasi * This code is derived from software developed for The NetBSD Foundation 8 1.2 uebayasi * by Masao Uebayashi. 9 1.2 uebayasi * 10 1.2 uebayasi * Redistribution and use in source and binary forms, with or without 11 1.2 uebayasi * modification, are permitted provided that the following conditions 12 1.2 uebayasi * are met: 13 1.2 uebayasi * 1. Redistributions of source code must retain the above copyright 14 1.2 uebayasi * notice, this list of conditions and the following disclaimer. 15 1.2 uebayasi * 2. Redistributions in binary form must reproduce the above copyright 16 1.2 uebayasi * notice, this list of conditions and the following disclaimer in the 17 1.2 uebayasi * documentation and/or other materials provided with the distribution. 18 1.2 uebayasi * 19 1.2 uebayasi * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.2 uebayasi * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.2 uebayasi * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.2 uebayasi * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.2 uebayasi * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.2 uebayasi * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.2 uebayasi * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.2 uebayasi * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.2 uebayasi * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.2 uebayasi * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.2 uebayasi * POSSIBILITY OF SUCH DAMAGE. 30 1.2 uebayasi */ 31 1.2 uebayasi 32 1.2 uebayasi #include <sys/cdefs.h> 33 1.5 thorpej __KERNEL_RCSID(0, "$NetBSD: exb.c,v 1.5 2021/08/07 16:19:03 thorpej Exp $"); 34 1.2 uebayasi 35 1.2 uebayasi #include "locators.h" 36 1.2 uebayasi 37 1.2 uebayasi #include <sys/param.h> 38 1.2 uebayasi #include <sys/systm.h> 39 1.2 uebayasi #include <sys/device.h> 40 1.2 uebayasi #include <sys/extent.h> 41 1.2 uebayasi #include <sys/bus.h> 42 1.2 uebayasi 43 1.2 uebayasi #include <powerpc/ibm4xx/dcr4xx.h> 44 1.2 uebayasi #include <powerpc/ibm4xx/dev/exbvar.h> 45 1.2 uebayasi 46 1.2 uebayasi struct exb_softc { 47 1.2 uebayasi }; 48 1.2 uebayasi 49 1.2 uebayasi extern const struct exb_conf exb_confs[]; 50 1.2 uebayasi 51 1.3 matt static int exb_match(device_t, cfdata_t, void *); 52 1.3 matt static void exb_attach(device_t, device_t, void *); 53 1.2 uebayasi static int exb_print(void *, const char *); 54 1.2 uebayasi 55 1.2 uebayasi CFATTACH_DECL_NEW(exb, sizeof(struct exb_softc), exb_match, exb_attach, 56 1.2 uebayasi NULL, NULL); 57 1.2 uebayasi 58 1.2 uebayasi static struct powerpc_bus_space exb_bus_space_tag = 59 1.2 uebayasi { _BUS_SPACE_BIG_ENDIAN | _BUS_SPACE_MEM_TYPE, 0 }; 60 1.2 uebayasi 61 1.2 uebayasi static int 62 1.3 matt exb_match(device_t parent, cfdata_t cf, void *aux) 63 1.2 uebayasi { 64 1.2 uebayasi 65 1.2 uebayasi return 1; 66 1.2 uebayasi } 67 1.2 uebayasi 68 1.2 uebayasi static void 69 1.2 uebayasi exb_attach(device_t parent, device_t self, void *aux) 70 1.2 uebayasi { 71 1.2 uebayasi const struct exb_conf *ec = exb_confs; 72 1.2 uebayasi uint32_t ebc0_bNcr; 73 1.2 uebayasi bus_addr_t base, size; 74 1.2 uebayasi int locs[EXBCF_NLOCS]; 75 1.2 uebayasi 76 1.2 uebayasi printf("\n"); 77 1.2 uebayasi 78 1.2 uebayasi /* mtdcr needs a constant */ 79 1.2 uebayasi switch (device_unit(self)) { 80 1.2 uebayasi case 0: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B0CR); break; 81 1.2 uebayasi case 1: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B1CR); break; 82 1.2 uebayasi case 2: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B2CR); break; 83 1.2 uebayasi case 3: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B3CR); break; 84 1.2 uebayasi case 4: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B4CR); break; 85 1.2 uebayasi case 5: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B5CR); break; 86 1.2 uebayasi case 6: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B6CR); break; 87 1.2 uebayasi case 7: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B7CR); break; 88 1.2 uebayasi } 89 1.2 uebayasi ebc0_bNcr = mfdcr(DCR_EBC0_CFGDATA); 90 1.2 uebayasi base = ebc0_bNcr & 0xfff00000; 91 1.2 uebayasi size = 0x00100000 << ((ebc0_bNcr & 0x000e0000) >> 17); 92 1.2 uebayasi 93 1.2 uebayasi exb_bus_space_tag.pbs_base = base; 94 1.2 uebayasi exb_bus_space_tag.pbs_limit = base + size - 1; 95 1.2 uebayasi 96 1.2 uebayasi while (ec->ec_name) { 97 1.2 uebayasi struct exb_conf ec1; 98 1.2 uebayasi 99 1.2 uebayasi locs[EXBCF_ADDR] = ec->ec_addr; 100 1.2 uebayasi 101 1.2 uebayasi ec1 = *ec; 102 1.2 uebayasi ec1.ec_bust = exb_get_bus_space_tag(); 103 1.2 uebayasi 104 1.4 thorpej config_found(self, &ec1, exb_print, 105 1.5 thorpej CFARGS(.submatch = config_stdsubmatch, 106 1.5 thorpej .locators = locs)); 107 1.2 uebayasi ec++; 108 1.2 uebayasi } 109 1.2 uebayasi } 110 1.2 uebayasi 111 1.2 uebayasi static int 112 1.2 uebayasi exb_print(void *aux, const char *bus) 113 1.2 uebayasi { 114 1.2 uebayasi struct exb_conf *ec = aux; 115 1.2 uebayasi 116 1.2 uebayasi if (bus) 117 1.2 uebayasi return QUIET; 118 1.2 uebayasi 119 1.2 uebayasi if (ec->ec_addr) 120 1.2 uebayasi printf(" addr %"PRIxBUSADDR, ec->ec_addr); 121 1.2 uebayasi 122 1.2 uebayasi return UNCONF; 123 1.2 uebayasi } 124 1.2 uebayasi 125 1.2 uebayasi bus_space_tag_t 126 1.2 uebayasi exb_get_bus_space_tag(void) 127 1.2 uebayasi { 128 1.2 uebayasi static char ex_storage[EXTENT_FIXED_STORAGE_SIZE(8)] 129 1.2 uebayasi __attribute__((aligned(8))); 130 1.2 uebayasi static int exb_bus_space_tag_inited; 131 1.2 uebayasi 132 1.2 uebayasi if (exb_bus_space_tag_inited == 0) { 133 1.2 uebayasi if (bus_space_init(&exb_bus_space_tag, "exbtag", 134 1.2 uebayasi ex_storage, sizeof(ex_storage))) 135 1.2 uebayasi panic("exb_attach: Failed to initialise exb_bus_space_tag"); 136 1.2 uebayasi exb_bus_space_tag_inited = 1; 137 1.2 uebayasi } 138 1.2 uebayasi return &exb_bus_space_tag; 139 1.2 uebayasi } 140
Indexes created Mon Sep 22 10:09:38 GMT 2025