| 1 | /* $NetBSD: amdnb_misc.c,v 1.2 2012/04/16 16:07:24 cegger Exp $ */ |
| 2 | /* |
| 3 | * Copyright (c) 2012 The NetBSD Foundation, Inc. |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * This code is derived from software contributed to The NetBSD Foundation |
| 7 | * by Christoph Egger. |
| 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 | #include <sys/cdefs.h> |
| 32 | __KERNEL_RCSID(0, "$NetBSD: amdnb_misc.c,v 1.2 2012/04/16 16:07:24 cegger Exp $" ); |
| 33 | |
| 34 | #include <sys/param.h> |
| 35 | #include <sys/device.h> |
| 36 | |
| 37 | #include <dev/pci/pcireg.h> |
| 38 | #include <dev/pci/pcivar.h> |
| 39 | #include <dev/pci/pcidevs.h> |
| 40 | |
| 41 | static int amdnb_misc_match(device_t, cfdata_t match, void *); |
| 42 | static void amdnb_misc_attach(device_t, device_t, void *); |
| 43 | static int amdnb_misc_detach(device_t, int); |
| 44 | static int amdnb_misc_rescan(device_t, const char *, const int *); |
| 45 | static void amdnb_misc_childdet(device_t, device_t); |
| 46 | |
| 47 | struct amdnb_misc_softc { |
| 48 | struct pci_attach_args sc_pa; |
| 49 | }; |
| 50 | |
| 51 | CFATTACH_DECL3_NEW(amdnb_misc, sizeof(struct amdnb_misc_softc), |
| 52 | amdnb_misc_match, amdnb_misc_attach, amdnb_misc_detach, NULL, |
| 53 | amdnb_misc_rescan, amdnb_misc_childdet, DVF_DETACH_SHUTDOWN); |
| 54 | |
| 55 | |
| 56 | static int |
| 57 | amdnb_misc_match(device_t parent, cfdata_t match, void *aux) |
| 58 | { |
| 59 | struct pci_attach_args *pa = aux; |
| 60 | |
| 61 | if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_AMD) |
| 62 | return 0; |
| 63 | |
| 64 | switch (PCI_PRODUCT(pa->pa_id)) { |
| 65 | case PCI_PRODUCT_AMD_AMD64_MISC: |
| 66 | case PCI_PRODUCT_AMD_AMD64_F10_MISC: |
| 67 | case PCI_PRODUCT_AMD_AMD64_F11_MISC: |
| 68 | case PCI_PRODUCT_AMD_F14_NB: /* Family 12h, too */ |
| 69 | case PCI_PRODUCT_AMD_F15_MISC: |
| 70 | break; |
| 71 | default: |
| 72 | return 0; |
| 73 | } |
| 74 | |
| 75 | return 2; /* supercede pchb(4) */ |
| 76 | } |
| 77 | |
| 78 | static int |
| 79 | amdnb_misc_search(device_t parent, cfdata_t cf, const int *locs, void *aux) |
| 80 | { |
| 81 | device_t dev; |
| 82 | deviter_t di; |
| 83 | bool attach; |
| 84 | |
| 85 | if (!config_match(parent, cf, aux)) |
| 86 | return 0; |
| 87 | |
| 88 | attach = true; |
| 89 | |
| 90 | /* Figure out if found child 'cf' is already attached. |
| 91 | * No need to attach it twice. |
| 92 | */ |
| 93 | |
| 94 | /* XXX: I only want to iterate over the children of *this* device. |
| 95 | * Can we introduce a |
| 96 | * deviter_first_child(&di, parent, DEVITER_F_LEAVES_ONLY) |
| 97 | * or even better, can we introduce a query function that returns |
| 98 | * if a child is already attached? |
| 99 | */ |
| 100 | for (dev = deviter_first(&di, DEVITER_F_LEAVES_FIRST); dev != NULL; |
| 101 | dev = deviter_next(&di)) |
| 102 | { |
| 103 | if (device_parent(dev) != parent) |
| 104 | continue; |
| 105 | if (device_is_a(dev, cf->cf_name)) { |
| 106 | attach = false; |
| 107 | break; |
| 108 | } |
| 109 | } |
| 110 | deviter_release(&di); |
| 111 | |
| 112 | if (!attach) |
| 113 | return 0; |
| 114 | |
| 115 | config_attach_loc(parent, cf, locs, aux, NULL); |
| 116 | |
| 117 | return 0; |
| 118 | } |
| 119 | |
| 120 | static void |
| 121 | amdnb_misc_attach(device_t parent, device_t self, void *aux) |
| 122 | { |
| 123 | struct amdnb_misc_softc *sc = device_private(self); |
| 124 | struct pci_attach_args *pa = aux; |
| 125 | |
| 126 | sc->sc_pa = *pa; |
| 127 | |
| 128 | aprint_naive("\n" ); |
| 129 | aprint_normal(": AMD NB Misc Configuration\n" ); |
| 130 | |
| 131 | if (!pmf_device_register(self, NULL, NULL)) |
| 132 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 133 | |
| 134 | config_search_loc(amdnb_misc_search, self, "amdnb_miscbus" , |
| 135 | NULL, &sc->sc_pa); |
| 136 | |
| 137 | return; |
| 138 | } |
| 139 | |
| 140 | static int |
| 141 | amdnb_misc_detach(device_t self, int flags) |
| 142 | { |
| 143 | int rv; |
| 144 | |
| 145 | rv = config_detach_children(self, flags); |
| 146 | if (rv != 0) |
| 147 | return rv; |
| 148 | |
| 149 | pmf_device_deregister(self); |
| 150 | return rv; |
| 151 | } |
| 152 | |
| 153 | static int |
| 154 | amdnb_misc_rescan(device_t self, const char *ifattr, const int *locators) |
| 155 | { |
| 156 | struct amdnb_misc_softc *sc = device_private(self); |
| 157 | |
| 158 | if (!ifattr_match(ifattr, "amdnb_miscbus" )) |
| 159 | return 0; |
| 160 | |
| 161 | config_search_loc(amdnb_misc_search, self, ifattr, |
| 162 | locators, &sc->sc_pa); |
| 163 | |
| 164 | return 0; |
| 165 | } |
| 166 | |
| 167 | static void |
| 168 | amdnb_misc_childdet(device_t self, device_t child) |
| 169 | { |
| 170 | return; |
| 171 | } |
| 172 | |