1 /* $NetBSD: pci_machdep.h,v 1.16 2010/02/25 22:20:03 dyoung Exp $ */ 2 3 /* 4 * Copyright (c) 2006 Manuel Bouyer. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 */ 27 28 /* 29 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 30 * Copyright (c) 1994 Charles M. Hannum. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 3. All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by Charles M. Hannum. 43 * 4. The name of the author may not be used to endorse or promote products 44 * derived from this software without specific prior written permission. 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 #ifndef _XEN_PCI_MACHDEP_H_ 58 #define _XEN_PCI_MACHDEP_H_ 59 60 #include "opt_xen.h" 61 62 struct pci_attach_args; 63 64 extern struct x86_bus_dma_tag pci_bus_dma_tag; 65 #ifdef _LP64 66 extern struct x86_bus_dma_tag pci_bus_dma64_tag; 67 #endif 68 69 /* Some values appropriate for x86, from x86/include/pci_machdep.h */ 70 #define __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH 71 #define PCI_PREFER_IOSPACE 72 73 union x86_pci_tag_u { 74 uint32_t mode1; 75 struct { 76 uint16_t port; 77 uint8_t enable; 78 uint8_t forward; 79 } mode2; 80 }; 81 82 #ifndef DOM0OPS 83 int xpci_enumerate_bus(struct pci_softc *, const int *, 84 int (*)(struct pci_attach_args *), struct pci_attach_args *); 85 #define PCI_MACHDEP_ENUMERATE_BUS xpci_enumerate_bus 86 #endif 87 struct pci_chipset_tag; 88 struct pci_attach_args; 89 90 /* 91 * Types provided to machine-independent PCI code 92 */ 93 typedef struct pci_chipset_tag *pci_chipset_tag_t; 94 typedef union x86_pci_tag_u pcitag_t; 95 typedef struct xen_intr_handle pci_intr_handle_t; 96 97 struct pci_chipset_tag { 98 pcireg_t (*pc_conf_read)(pci_chipset_tag_t, pcitag_t, int); 99 100 void (*pc_conf_write)(pci_chipset_tag_t, pcitag_t, int, pcireg_t); 101 102 #if 0 103 int (*pc_find_rom)(struct pci_attach_args *, bus_space_tag_t, 104 bus_space_handle_t, int, bus_space_handle_t *, bus_space_size_t *); 105 #endif 106 107 int (*pc_intr_map)(struct pci_attach_args *, pci_intr_handle_t *); 108 109 const char *(*pc_intr_string)(pci_chipset_tag_t, pci_intr_handle_t); 110 111 const struct evcnt *(*pc_intr_evcnt)(pci_chipset_tag_t, 112 pci_intr_handle_t); 113 114 void *(*pc_intr_establish)(pci_chipset_tag_t, pci_intr_handle_t, int, 115 int (*)(void *), void *); 116 117 void (*pc_intr_disestablish)(pci_chipset_tag_t, void *); 118 119 pcitag_t (*pc_make_tag)(pci_chipset_tag_t, int, int, int); 120 121 void (*pc_decompose_tag)(pci_chipset_tag_t, pcitag_t, 122 int *, int *, int *); 123 }; 124 125 /* functions provided to MI PCI */ 126 127 void pci_attach_hook(device_t, device_t, 128 struct pcibus_attach_args *); 129 int pci_bus_maxdevs(pci_chipset_tag_t, int); 130 pcitag_t pci_make_tag(pci_chipset_tag_t, int, int, int); 131 void pci_decompose_tag(pci_chipset_tag_t, pcitag_t, 132 int *, int *, int *); 133 pcireg_t pci_conf_read(pci_chipset_tag_t, pcitag_t, int); 134 void pci_conf_write(pci_chipset_tag_t, pcitag_t, int, 135 pcireg_t); 136 int pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *); 137 const char *pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t); 138 const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t); 139 void *pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t, 140 int, int (*)(void *), void *); 141 void pci_intr_disestablish(pci_chipset_tag_t, void *); 142 int xen_pci_enumerate_bus(struct pci_softc *, const int *, 143 int (*)(struct pci_attach_args *), struct pci_attach_args *); 144 145 /* Extract Bus Number for a host bridge or -1 if unknown. */ 146 int pchb_get_bus_number(pci_chipset_tag_t, pcitag_t); 147 148 /* 149 * Section 6.2.4, `Miscellaneous Functions' of the PCI Specification, 150 * says that 255 means `unknown' or `no connection' to the interrupt 151 * controller on a PC. 152 */ 153 #define X86_PCI_INTERRUPT_LINE_NO_CONNECTION 0xff 154 155 void pci_mode_set(int); 156 int pci_mode_detect(void); 157 int pci_bus_flags(void); 158 159 void pci_device_foreach(pci_chipset_tag_t, int, 160 void (*)(pci_chipset_tag_t, pcitag_t, void*), 161 void *); 162 163 void pci_device_foreach_min(pci_chipset_tag_t, int, int, 164 void (*)(pci_chipset_tag_t, pcitag_t, void*), 165 void *); 166 167 void pci_bridge_foreach(pci_chipset_tag_t, int, int, 168 void (*) (pci_chipset_tag_t, pcitag_t, void *), void *); 169 170 #endif /* _XEN_PCI_MACHDEP_H_ */ 171