1 /* $NetBSD: pci_machdep_common.h,v 1.9 2012/06/15 13:58:34 yamt Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 5 * Copyright (c) 1994 Charles M. Hannum. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Charles M. Hannum. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _X86_PCI_MACHDEP_COMMON_H_ 34 #define _X86_PCI_MACHDEP_COMMON_H_ 35 36 /* 37 * Machine-specific definitions for PCI autoconfiguration. 38 */ 39 #define __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH 40 #ifndef XEN 41 #define __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_DISESTABLISH 42 #endif 43 44 /* 45 * i386-specific PCI structure and type definitions. 46 * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE. 47 * 48 * Configuration tag; created from a {bus,device,function} triplet by 49 * pci_make_tag(), and passed to pci_conf_read() and pci_conf_write(). 50 * We could instead always pass the {bus,device,function} triplet to 51 * the read and write routines, but this would cause extra overhead. 52 * 53 * Mode 2 is historical and deprecated by the Revision 2.0 specification. 54 * 55 * 56 * Mode 1 tag: 57 * 31 24 16 15 11 10 8 58 * +---------------------------------------------------------------+ 59 * |1| 0 | BUS | DEV |FUNC | 0 | 60 * +---------------------------------------------------------------+ 61 */ 62 union x86_pci_tag_u { 63 uint32_t mode1; 64 struct { 65 uint16_t port; 66 uint8_t enable; 67 uint8_t forward; 68 } mode2; 69 }; 70 71 extern struct x86_bus_dma_tag pci_bus_dma_tag; 72 #ifdef _LP64 73 extern struct x86_bus_dma_tag pci_bus_dma64_tag; 74 #endif 75 76 struct pci_attach_args; 77 struct pci_chipset_tag; 78 79 /* 80 * Types provided to machine-independent PCI code 81 */ 82 typedef struct pci_chipset_tag *pci_chipset_tag_t; 83 typedef union x86_pci_tag_u pcitag_t; 84 85 struct pci_chipset_tag { 86 pci_chipset_tag_t pc_super; 87 uint64_t pc_present; 88 const struct pci_overrides *pc_ov; 89 void *pc_ctx; 90 }; 91 92 /* 93 * i386-specific PCI variables and functions. 94 * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE. 95 */ 96 int pci_bus_flags(void); 97 int pci_mode_detect(void); 98 void pci_mode_set(int); 99 100 /* 101 * Functions provided to machine-independent PCI code. 102 */ 103 void pci_attach_hook(device_t, device_t, 104 struct pcibus_attach_args *); 105 int pci_bus_maxdevs(pci_chipset_tag_t, int); 106 pcitag_t pci_make_tag(pci_chipset_tag_t, int, int, int); 107 void pci_decompose_tag(pci_chipset_tag_t, pcitag_t, 108 int *, int *, int *); 109 pcireg_t pci_conf_read(pci_chipset_tag_t, pcitag_t, int); 110 void pci_conf_write(pci_chipset_tag_t, pcitag_t, int, 111 pcireg_t); 112 int pci_intr_map(const struct pci_attach_args *, 113 pci_intr_handle_t *); 114 const char *pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t); 115 const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t); 116 void *pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t, 117 int, int (*)(void *), void *); 118 void pci_intr_disestablish(pci_chipset_tag_t, void *); 119 120 /* experimental MSI support */ 121 void *pci_msi_establish(struct pci_attach_args *, int, int (*)(void *), void *); 122 void pci_msi_disestablish(void *); 123 124 /* 125 * ALL OF THE FOLLOWING ARE MACHINE-DEPENDENT, AND SHOULD NOT BE USED 126 * BY PORTABLE CODE. 127 */ 128 129 /* Extract Bus Number for a host bridge or -1 if unknown. */ 130 int pchb_get_bus_number(pci_chipset_tag_t, pcitag_t); 131 132 /* 133 * Section 6.2.4, `Miscellaneous Functions' of the PCI Specification, 134 * says that 255 means `unknown' or `no connection' to the interrupt 135 * controller on a PC. 136 */ 137 #define X86_PCI_INTERRUPT_LINE_NO_CONNECTION 0xff 138 139 void pci_device_foreach(pci_chipset_tag_t, int, 140 void (*)(pci_chipset_tag_t, pcitag_t, void*), 141 void *); 142 143 void pci_device_foreach_min(pci_chipset_tag_t, int, int, 144 void (*)(pci_chipset_tag_t, pcitag_t, void*), 145 void *); 146 147 void pci_bridge_foreach(pci_chipset_tag_t, int, int, 148 void (*) (pci_chipset_tag_t, pcitag_t, void *), void *); 149 150 void pci_ranges_infer(pci_chipset_tag_t, int, int, bus_addr_t *, 151 bus_size_t *, bus_addr_t *, bus_size_t *); 152 153 extern prop_dictionary_t pci_rsrc_dict; 154 prop_dictionary_t pci_rsrc_filter(prop_dictionary_t, 155 bool (*)(void *, prop_dictionary_t), void *arg); 156 157 #endif /* _X86_PCI_MACHDEP_COMMON_H_ */ 158