1 /* $NetBSD: pci_machdep.h,v 1.17 2004/07/29 16:55:25 drochner 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 /* 34 * Machine-specific definitions for PCI autoconfiguration. 35 */ 36 37 /* 38 * Forward declarations. 39 */ 40 struct pci_attach_args; 41 42 /* 43 * macppc-specific PCI structure and type definitions. 44 * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE. 45 * 46 * Configuration tag; created from a {bus,device,function} triplet by 47 * pci_make_tag(), and passed to pci_conf_read() and pci_conf_write(). 48 * We could instead always pass the {bus,device,function} triplet to 49 * the read and write routines, but this would cause extra overhead. 50 */ 51 52 /* 53 * Types provided to machine-independent PCI code 54 */ 55 typedef struct pci_bridge *pci_chipset_tag_t; 56 typedef int pcitag_t; 57 typedef int pci_intr_handle_t; 58 59 struct pci_bridge { 60 int node; 61 u_int *addr; 62 u_int *data; 63 int bus; 64 bus_space_tag_t memt; 65 bus_space_tag_t iot; 66 pcireg_t (*conf_read)(pci_chipset_tag_t, pcitag_t, int); 67 void (*conf_write)(pci_chipset_tag_t, pcitag_t, int, pcireg_t); 68 }; 69 70 extern struct macppc_bus_dma_tag pci_bus_dma_tag; 71 72 /* 73 * Functions provided to machine-independent PCI code. 74 */ 75 void pci_attach_hook(struct device *, struct device *, 76 struct pcibus_attach_args *); 77 int pci_bus_maxdevs(pci_chipset_tag_t, int); 78 pcitag_t pci_make_tag(pci_chipset_tag_t, int, int, int); 79 void pci_decompose_tag(pci_chipset_tag_t, pcitag_t, 80 int *, int *, int *); 81 pcireg_t pci_conf_read(pci_chipset_tag_t, pcitag_t, int); 82 void pci_conf_write(pci_chipset_tag_t, pcitag_t, int, 83 pcireg_t); 84 int pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *); 85 const char *pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t); 86 const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t); 87 void *pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t, 88 int, int (*)(void *), void *); 89 void pci_intr_disestablish(pci_chipset_tag_t, void *); 90 91 /* 92 * Internal functions. 93 */ 94 void pci_init(int); 95 int pcidev_to_ofdev(pci_chipset_tag_t, pcitag_t); 96