1 /* $OpenBSD: pci_machdep.h,v 1.32 2025/01/23 11:24:34 kettenis Exp $ */ 2 /* $NetBSD: pci_machdep.h,v 1.1 2003/02/26 21:26:11 fvdl Exp $ */ 3 4 /* 5 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 6 * Copyright (c) 1994 Charles M. Hannum. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles M. Hannum. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Machine-specific definitions for PCI autoconfiguration. 36 */ 37 38 /* 39 * amd64-specific PCI structure and type definitions. 40 * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE. 41 */ 42 43 extern struct bus_dma_tag pci_bus_dma_tag; 44 45 /* 46 * Types provided to machine-independent PCI code 47 */ 48 typedef void *pci_chipset_tag_t; 49 typedef u_int32_t pcitag_t; 50 51 typedef struct { 52 pcitag_t tag; 53 int line, pin; 54 } pci_intr_handle_t; 55 56 #define pci_intr_line(pc,ih) ((ih.line) & 0xff) 57 58 /* 59 * amd64-specific PCI variables and functions. 60 * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE. 61 */ 62 struct pci_attach_args; 63 64 extern struct extent *pciio_ex; 65 extern struct extent *pcimem_ex; 66 extern struct extent *pcibus_ex; 67 void pci_init_extents(void); 68 69 /* 70 * Functions provided to machine-independent PCI code. 71 */ 72 void pci_attach_hook(struct device *, struct device *, 73 struct pcibus_attach_args *); 74 int pci_bus_maxdevs(pci_chipset_tag_t, int); 75 pcitag_t pci_make_tag(pci_chipset_tag_t, int, int, int); 76 void pci_decompose_tag(pci_chipset_tag_t, pcitag_t, 77 int *, int *, int *); 78 int pci_conf_size(pci_chipset_tag_t, pcitag_t); 79 pcireg_t pci_conf_read(pci_chipset_tag_t, pcitag_t, int); 80 void pci_conf_write(pci_chipset_tag_t, pcitag_t, int, 81 pcireg_t); 82 int pci_intr_enable_msivec(struct pci_attach_args *, int); 83 int pci_intr_map_msi(struct pci_attach_args *, 84 pci_intr_handle_t *); 85 int pci_intr_map_msivec(struct pci_attach_args *, 86 int, pci_intr_handle_t *); 87 int pci_intr_map_msix(struct pci_attach_args *, 88 int, pci_intr_handle_t *); 89 int pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *); 90 const char *pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t); 91 void *pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t, 92 int, int (*)(void *), void *, const char *); 93 void *pci_intr_establish_cpu(pci_chipset_tag_t, pci_intr_handle_t, 94 int, struct cpu_info *, 95 int (*)(void *), void *, const char *); 96 void pci_intr_disestablish(pci_chipset_tag_t, void *); 97 int pci_probe_device_hook(pci_chipset_tag_t, 98 struct pci_attach_args *); 99 100 void pci_dev_postattach(struct device *, struct pci_attach_args *); 101 102 pcireg_t pci_min_powerstate(pci_chipset_tag_t, pcitag_t); 103 void pci_set_powerstate_md(pci_chipset_tag_t, pcitag_t, int, int); 104 105 void pci_mcfg_init(bus_space_tag_t, bus_addr_t, int, int, int); 106 pci_chipset_tag_t pci_lookup_segment(int, int); 107 108 #define __HAVE_PCI_MSIX 109 110 int pci_msix_table_map(pci_chipset_tag_t, pcitag_t, 111 bus_space_tag_t, bus_space_handle_t *); 112 void pci_msix_table_unmap(pci_chipset_tag_t, pcitag_t, 113 bus_space_tag_t, bus_space_handle_t); 114 115 /* 116 * ALL OF THE FOLLOWING ARE MACHINE-DEPENDENT, AND SHOULD NOT BE USED 117 * BY PORTABLE CODE. 118 */ 119 120 /* 121 * Section 6.2.4, `Miscellaneous Functions' of the PCI Specification, 122 * says that 255 means `unknown' or `no connection' to the interrupt 123 * controller on a PC. 124 */ 125 #define X86_PCI_INTERRUPT_LINE_NO_CONNECTION 0xff 126 127 /* 128 * PCI address space is shared with ISA, so avoid legacy ISA I/O 129 * registers. 130 */ 131 #define PCI_IO_START 0x400 132 #define PCI_IO_END 0xffff 133 134 /* 135 * Avoid the DOS Compatibility Memory area. 136 */ 137 #define PCI_MEM_START 0x100000 138