1 /* $NetBSD: pci_machdep_common.h,v 1.6 2011/04/04 20:37:55 dyoung 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 union x86_pci_tag_u { 56 uint32_t mode1; 57 struct { 58 uint16_t port; 59 uint8_t enable; 60 uint8_t forward; 61 } mode2; 62 }; 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 struct pci_attach_args; 70 struct pci_chipset_tag; 71 72 /* 73 * Types provided to machine-independent PCI code 74 */ 75 typedef struct pci_chipset_tag *pci_chipset_tag_t; 76 typedef union x86_pci_tag_u pcitag_t; 77 78 struct pci_chipset_tag { 79 pci_chipset_tag_t pc_super; 80 uint64_t pc_present; 81 const struct pci_overrides *pc_ov; 82 void *pc_ctx; 83 }; 84 85 /* 86 * i386-specific PCI variables and functions. 87 * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE. 88 */ 89 int pci_bus_flags(void); 90 int pci_mode_detect(void); 91 void pci_mode_set(int); 92 93 /* 94 * Functions provided to machine-independent PCI code. 95 */ 96 void pci_attach_hook(device_t, device_t, 97 struct pcibus_attach_args *); 98 int pci_bus_maxdevs(pci_chipset_tag_t, int); 99 pcitag_t pci_make_tag(pci_chipset_tag_t, int, int, int); 100 void pci_decompose_tag(pci_chipset_tag_t, pcitag_t, 101 int *, int *, int *); 102 pcireg_t pci_conf_read(pci_chipset_tag_t, pcitag_t, int); 103 void pci_conf_write(pci_chipset_tag_t, pcitag_t, int, 104 pcireg_t); 105 int pci_intr_map(const struct pci_attach_args *, 106 pci_intr_handle_t *); 107 const char *pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t); 108 const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t); 109 void *pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t, 110 int, int (*)(void *), void *); 111 void pci_intr_disestablish(pci_chipset_tag_t, void *); 112 113 /* 114 * ALL OF THE FOLLOWING ARE MACHINE-DEPENDENT, AND SHOULD NOT BE USED 115 * BY PORTABLE CODE. 116 */ 117 118 /* Extract Bus Number for a host bridge or -1 if unknown. */ 119 int pchb_get_bus_number(pci_chipset_tag_t, pcitag_t); 120 121 /* 122 * Section 6.2.4, `Miscellaneous Functions' of the PCI Specification, 123 * says that 255 means `unknown' or `no connection' to the interrupt 124 * controller on a PC. 125 */ 126 #define X86_PCI_INTERRUPT_LINE_NO_CONNECTION 0xff 127 128 void pci_device_foreach(pci_chipset_tag_t, int, 129 void (*)(pci_chipset_tag_t, pcitag_t, void*), 130 void *); 131 132 void pci_device_foreach_min(pci_chipset_tag_t, int, int, 133 void (*)(pci_chipset_tag_t, pcitag_t, void*), 134 void *); 135 136 void pci_bridge_foreach(pci_chipset_tag_t, int, int, 137 void (*) (pci_chipset_tag_t, pcitag_t, void *), void *); 138 139 void pci_mmio_range_infer(pci_chipset_tag_t, int, int, bus_addr_t *, 140 bus_size_t *); 141 142 #endif /* _X86_PCI_MACHDEP_COMMON_H_ */ 143