1 /* $NetBSD: pq3cfi.c,v 1.8 2023/05/10 00:08:07 riastradh Exp $ */ 2 /*- 3 * Copyright (c) 2011 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Cliff Neighbors. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* 32 * NOR CFI driver support for booke 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: pq3cfi.c,v 1.8 2023/05/10 00:08:07 riastradh Exp $"); 37 38 #include "locators.h" 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/cdefs.h> 43 #include <sys/device.h> 44 #include <sys/endian.h> 45 46 #include <sys/bus.h> 47 48 #include <powerpc/booke/cpuvar.h> 49 50 #include <dev/nor/nor.h> 51 #include <dev/nor/cfi.h> 52 53 54 static int pq3cfi_match(device_t, cfdata_t, void *); 55 static void pq3cfi_attach(device_t, device_t, void *); 56 static int pq3cfi_detach(device_t, int); 57 58 struct pq3cfi_softc { 59 device_t sc_dev; 60 device_t sc_nordev; 61 struct cfi sc_cfi; 62 bus_addr_t sc_addr; 63 bus_size_t sc_size; 64 struct nor_interface sc_nor_if; 65 }; 66 67 CFATTACH_DECL_NEW(pq3cfi, sizeof(struct pq3cfi_softc), pq3cfi_match, 68 pq3cfi_attach, pq3cfi_detach, NULL); 69 70 static int 71 pq3cfi_match(device_t parent, cfdata_t match, void *aux) 72 { 73 struct generic_attach_args *ga = aux; 74 bus_size_t tmpsize = CFI_QRY_MIN_MAP_SIZE; 75 bus_addr_t addr; 76 struct cfi cfi; 77 int rv; 78 79 KASSERT(ga->ga_bst != NULL); 80 81 addr = ga->ga_addr; 82 if (addr == OBIOCF_ADDR_DEFAULT) { 83 aprint_error("%s: no base address\n", __func__); 84 return 0; 85 } 86 87 cfi.cfi_bst = ga->ga_bst; 88 int error = bus_space_map(cfi.cfi_bst, addr, tmpsize, 0, &cfi.cfi_bsh); 89 if (error != 0) { 90 aprint_error("%s: cannot map %d at offset %#x, error %d\n", __func__, tmpsize, addr, error); 91 return false; 92 } 93 94 if (! cfi_probe(&cfi)) { 95 aprint_debug("%s: probe addr %#x, CFI not found\n", 96 __func__, addr); 97 rv = 0; 98 } else { 99 rv = 1; 100 } 101 102 bus_space_unmap(cfi.cfi_bst, cfi.cfi_bsh, tmpsize); 103 104 return rv; 105 } 106 107 static void 108 pq3cfi_attach(device_t parent, device_t self, void *aux) 109 { 110 struct pq3cfi_softc *sc = device_private(self); 111 struct generic_attach_args *ga = aux; 112 struct cfi_query_data * const qryp = &sc->sc_cfi.cfi_qry_data; 113 const bus_size_t tmpsize = CFI_QRY_MIN_MAP_SIZE; 114 bool found; 115 int error; 116 117 aprint_normal("\n"); 118 119 sc->sc_dev = self; 120 sc->sc_cfi.cfi_bst = ga->ga_bst; 121 sc->sc_addr = ga->ga_addr; 122 123 /* map enough to identify, remap later when size is known */ 124 error = bus_space_map(sc->sc_cfi.cfi_bst, sc->sc_addr, tmpsize, 125 0, &sc->sc_cfi.cfi_bsh); 126 if (error != 0) { 127 aprint_error_dev(self, "could not map error %d\n", error); 128 return; 129 } 130 131 found = cfi_identify(&sc->sc_cfi); 132 133 bus_space_unmap(sc->sc_cfi.cfi_bst, sc->sc_cfi.cfi_bsh, tmpsize); 134 135 if (! found) { 136 /* should not happen, we already probed OK in match */ 137 aprint_error_dev(self, "could not map error %d\n", error); 138 return; 139 } 140 141 sc->sc_size = 1 << qryp->device_size; 142 143 sc->sc_nor_if = nor_interface_cfi; 144 sc->sc_nor_if.private = &sc->sc_cfi; 145 sc->sc_nor_if.access_width = (1 << sc->sc_cfi.cfi_portwidth); 146 147 cfi_print(self, &sc->sc_cfi); 148 149 error = bus_space_map(sc->sc_cfi.cfi_bst, sc->sc_addr, sc->sc_size, 150 BUS_SPACE_MAP_PREFETCHABLE, &sc->sc_cfi.cfi_bsh); 151 if (error != 0) { 152 aprint_error_dev(self, "could not map error %d\n", error); 153 return; 154 } 155 156 if (! pmf_device_register1(self, NULL, NULL, NULL)) 157 aprint_error_dev(self, "couldn't establish power handler\n"); 158 159 sc->sc_nordev = nor_attach_mi(&sc->sc_nor_if, self); 160 161 } 162 163 static int 164 pq3cfi_detach(device_t self, int flags) 165 { 166 struct pq3cfi_softc *sc = device_private(self); 167 int error; 168 169 error = config_detach_children(self, flags); 170 if (error) 171 return error; 172 173 pmf_device_deregister(self); 174 175 bus_space_unmap(sc->sc_cfi.cfi_bst, sc->sc_cfi.cfi_bsh, sc->sc_size); 176 177 return 0; 178 } 179
Indexes created Fri Oct 03 02:09:57 GMT 2025