1 /* $NetBSD: geode.c,v 1.17 2021/08/07 16:18:55 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2005 David Young. All rights reserved. 5 * 6 * This code was written by David Young and merged with geodecntr code 7 * by Frank Kardel. 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 DAVID YOUNG ``AS IS'' AND ANY 19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 21 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DAVID 22 * YOUNG BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 23 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 24 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 26 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 29 * OF SUCH DAMAGE. 30 */ 31 /*- 32 * Copyright (c) 2002 The NetBSD Foundation, Inc. 33 * All rights reserved. 34 * 35 * This code is derived from software contributed to The NetBSD Foundation 36 * by Jason R. Thorpe. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 48 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 49 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 50 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 51 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 52 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 53 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 54 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 55 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 56 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 57 * POSSIBILITY OF SUCH DAMAGE. 58 */ 59 60 /* 61 * Device driver for the special devices attached to the GBA (watchdog, high 62 * resolution counter, ...) in the AMD Geode SC1100 processor. 63 */ 64 65 #include <sys/cdefs.h> 66 67 __KERNEL_RCSID(0, "$NetBSD: geode.c,v 1.17 2021/08/07 16:18:55 thorpej Exp $"); 68 69 #include <sys/param.h> 70 #include <sys/systm.h> 71 #include <sys/device.h> 72 #include <sys/wdog.h> 73 #include <uvm/uvm_extern.h> 74 #include <sys/bus.h> 75 #include <dev/pci/pcivar.h> 76 #include <dev/pci/pcidevs.h> 77 #include <arch/i386/pci/geodevar.h> 78 #include <arch/i386/pci/geodereg.h> 79 #include <dev/sysmon/sysmonvar.h> 80 81 #ifdef GEODE_DEBUG 82 #define GEODE_DPRINTF(__x) printf __x 83 #else /* GEODE_DEBUG */ 84 #define GEODE_DPRINTF(__x) /* nothing */ 85 #endif 86 87 static int 88 geode_gcb_match(device_t parent, cfdata_t match, void *aux) 89 { 90 struct pci_attach_args *pa = aux; 91 92 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_NS && 93 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_NS_SC1100_XBUS) 94 return (10); /* XXX beat pchb? -dyoung */ 95 96 return (0); 97 } 98 99 static void 100 geode_gcb_attach(device_t parent, device_t self, void *aux) 101 { 102 struct geode_gcb_softc *sc = device_private(self); 103 struct pci_attach_args *pa = aux; 104 uint32_t cba; 105 u_int rev; 106 107 cba = pci_conf_read(pa->pa_pc, pa->pa_tag, SC1100_XBUS_CBA_SCRATCHPAD); 108 sc->sc_iot = pa->pa_iot; 109 if (bus_space_map(sc->sc_iot, (bus_addr_t)cba, SC1100_GCB_SIZE, 0, 110 &sc->sc_ioh) != 0) { 111 aprint_error(": unable to map registers\n"); 112 return; 113 } 114 115 GEODE_DPRINTF(("%s: mapped %u bytes at %#08" PRIx32 "\n", 116 device_xname(self), SC1100_GCB_SIZE, cba)); 117 118 rev = bus_space_read_1(sc->sc_iot, sc->sc_ioh, SC1100_GCB_REV_B); 119 120 aprint_naive("\n"); 121 aprint_normal(": AMD Geode GCB (rev. 0x%02x)\n", rev); 122 123 while (config_found(self, NULL, NULL, CFARGS_NONE) != NULL) 124 /* empty */; 125 } 126 static int 127 geode_gcb_detach(device_t self, int flags) 128 { 129 int rc; 130 struct geode_gcb_softc *sc = device_private(self); 131 132 if ((rc = config_detach_children(self, flags)) != 0) 133 return rc; 134 135 bus_space_unmap(sc->sc_iot, sc->sc_ioh, SC1100_GCB_SIZE); 136 return 0; 137 } 138 139 static void 140 geode_gcb_childdetached(device_t parent, device_t child) 141 { 142 /* We hold no references to child devices, so there is nothing 143 * to do. 144 */ 145 } 146 147 CFATTACH_DECL2_NEW(geodegcb, sizeof(struct geode_gcb_softc), 148 geode_gcb_match, geode_gcb_attach, geode_gcb_detach, NULL, NULL, 149 geode_gcb_childdetached); 150
Indexes created Sat Sep 20 22:09:52 GMT 2025