1 /* $NetBSD: pci_machdep_common.h,v 1.3 2010/04/28 21:27:14 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 41 /* 42 * i386-specific PCI structure and type definitions. 43 * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE. 44 * 45 * Configuration tag; created from a {bus,device,function} triplet by 46 * pci_make_tag(), and passed to pci_conf_read() and pci_conf_write(). 47 * We could instead always pass the {bus,device,function} triplet to 48 * the read and write routines, but this would cause extra overhead. 49 * 50 * Mode 2 is historical and deprecated by the Revision 2.0 specification. 51 */ 52 union x86_pci_tag_u { 53 uint32_t mode1; 54 struct { 55 uint16_t port; 56 uint8_t enable; 57 uint8_t forward; 58 } mode2; 59 }; 60 61 extern struct x86_bus_dma_tag pci_bus_dma_tag; 62 #ifdef _LP64 63 extern struct x86_bus_dma_tag pci_bus_dma64_tag; 64 #endif 65 66 struct pci_attach_args; 67 struct pci_chipset_tag; 68 69 /* 70 * Types provided to machine-independent PCI code 71 */ 72 typedef struct pci_chipset_tag *pci_chipset_tag_t; 73 typedef union x86_pci_tag_u pcitag_t; 74 75 struct pci_chipset_tag { 76 pci_chipset_tag_t pc_super; 77 uint64_t pc_present; 78 const struct pci_overrides *pc_ov; 79 void *pc_ctx; 80 }; 81 82 /* 83 * i386-specific PCI variables and functions. 84 * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE. 85 */ 86 int pci_bus_flags(void); 87 int pci_mode_detect(void); 88 void pci_mode_set(int); 89 90 /* 91 * Functions provided to machine-independent PCI code. 92 */ 93 void pci_attach_hook(device_t, device_t, 94 struct pcibus_attach_args *); 95 int pci_bus_maxdevs(pci_chipset_tag_t, int); 96 pcitag_t pci_make_tag(pci_chipset_tag_t, int, int, int); 97 void pci_decompose_tag(pci_chipset_tag_t, pcitag_t, 98 int *, int *, int *); 99 pcireg_t pci_conf_read(pci_chipset_tag_t, pcitag_t, int); 100 void pci_conf_write(pci_chipset_tag_t, pcitag_t, int, 101 pcireg_t); 102 int pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *); 103 const char *pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t); 104 const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t); 105 void *pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t, 106 int, int (*)(void *), void *); 107 void pci_intr_disestablish(pci_chipset_tag_t, void *); 108 109 /* 110 * ALL OF THE FOLLOWING ARE MACHINE-DEPENDENT, AND SHOULD NOT BE USED 111 * BY PORTABLE CODE. 112 */ 113 114 /* Extract Bus Number for a host bridge or -1 if unknown. */ 115 int pchb_get_bus_number(pci_chipset_tag_t, pcitag_t); 116 117 /* 118 * Section 6.2.4, `Miscellaneous Functions' of the PCI Specification, 119 * says that 255 means `unknown' or `no connection' to the interrupt 120 * controller on a PC. 121 */ 122 #define X86_PCI_INTERRUPT_LINE_NO_CONNECTION 0xff 123 124 void pci_device_foreach(pci_chipset_tag_t, int, 125 void (*)(pci_chipset_tag_t, pcitag_t, void*), 126 void *); 127 128 void pci_device_foreach_min(pci_chipset_tag_t, int, int, 129 void (*)(pci_chipset_tag_t, pcitag_t, void*), 130 void *); 131 132 void pci_bridge_foreach(pci_chipset_tag_t, int, int, 133 void (*) (pci_chipset_tag_t, pcitag_t, void *), void *); 134 135 void pci_mmio_range_infer(pci_chipset_tag_t, int, int, bus_addr_t *, 136 bus_size_t *); 137 138 #endif /* _X86_PCI_MACHDEP_COMMON_H_ */ 139