pcivar.h revision 1.46
1 /* $NetBSD: pcivar.h,v 1.46 2001/05/04 15:13:17 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1996, 1997 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 _DEV_PCI_PCIVAR_H_ 34 #define _DEV_PCI_PCIVAR_H_ 35 36 /* 37 * Definitions for PCI autoconfiguration. 38 * 39 * This file describes types and functions which are used for PCI 40 * configuration. Some of this information is machine-specific, and is 41 * provided by pci_machdep.h. 42 */ 43 44 #include <machine/bus.h> 45 #include <dev/pci/pcireg.h> 46 47 /* 48 * Structures and definitions needed by the machine-dependent header. 49 */ 50 typedef u_int32_t pcireg_t; /* configuration space register XXX */ 51 struct pcibus_attach_args; 52 53 /* 54 * Machine-dependent definitions. 55 */ 56 #include <machine/pci_machdep.h> 57 58 /* 59 * PCI bus attach arguments. 60 */ 61 struct pcibus_attach_args { 62 char *pba_busname; /* XXX should be common */ 63 bus_space_tag_t pba_iot; /* pci i/o space tag */ 64 bus_space_tag_t pba_memt; /* pci mem space tag */ 65 bus_dma_tag_t pba_dmat; /* DMA tag */ 66 pci_chipset_tag_t pba_pc; 67 int pba_flags; /* flags; see below */ 68 69 int pba_bus; /* PCI bus number */ 70 71 /* 72 * Interrupt swizzling information. These fields 73 * are only used by secondary busses. 74 */ 75 u_int pba_intrswiz; /* how to swizzle pins */ 76 pcitag_t pba_intrtag; /* intr. appears to come from here */ 77 }; 78 79 /* 80 * PCI device attach arguments. 81 */ 82 struct pci_attach_args { 83 bus_space_tag_t pa_iot; /* pci i/o space tag */ 84 bus_space_tag_t pa_memt; /* pci mem space tag */ 85 bus_dma_tag_t pa_dmat; /* DMA tag */ 86 pci_chipset_tag_t pa_pc; 87 int pa_flags; /* flags; see below */ 88 89 u_int pa_bus; 90 u_int pa_device; 91 u_int pa_function; 92 pcitag_t pa_tag; 93 pcireg_t pa_id, pa_class; 94 95 /* 96 * Interrupt information. 97 * 98 * "Intrline" is used on systems whose firmware puts 99 * the right routing data into the line register in 100 * configuration space. The rest are used on systems 101 * that do not. 102 */ 103 u_int pa_intrswiz; /* how to swizzle pins if ppb */ 104 pcitag_t pa_intrtag; /* intr. appears to come from here */ 105 pci_intr_pin_t pa_intrpin; /* intr. appears on this pin */ 106 pci_intr_line_t pa_intrline; /* intr. routing information */ 107 }; 108 109 /* 110 * Flags given in the bus and device attachment args. 111 */ 112 #define PCI_FLAGS_IO_ENABLED 0x01 /* I/O space is enabled */ 113 #define PCI_FLAGS_MEM_ENABLED 0x02 /* memory space is enabled */ 114 #define PCI_FLAGS_MRL_OKAY 0x04 /* Memory Read Line okay */ 115 #define PCI_FLAGS_MRM_OKAY 0x08 /* Memory Read Multiple okay */ 116 #define PCI_FLAGS_MWI_OKAY 0x10 /* Memory Write and Invalidate 117 okay */ 118 119 /* 120 * PCI device 'quirks'. 121 * 122 * In general strange behaviour which can be handled by a driver (e.g. 123 * a bridge's inability to pass a type of access correctly) should be. 124 * The quirks table should only contain information which impacts 125 * the operation of the MI PCI code and which can't be pushed lower 126 * (e.g. because it's unacceptable to require a driver to be present 127 * for the information to be known). 128 */ 129 struct pci_quirkdata { 130 pci_vendor_id_t vendor; /* Vendor ID */ 131 pci_product_id_t product; /* Product ID */ 132 int quirks; /* quirks; see below */ 133 }; 134 #define PCI_QUIRK_MULTIFUNCTION 1 135 136 #ifdef _KERNEL 137 #include "locators.h" 138 #endif 139 140 /* 141 * Locators devices that attach to 'pcibus', as specified to config. 142 */ 143 #define pcibuscf_bus cf_loc[PCIBUSCF_BUS] 144 #define PCIBUS_UNK_BUS PCIBUSCF_BUS_DEFAULT /* wildcarded 'bus' */ 145 146 /* 147 * Locators for PCI devices, as specified to config. 148 */ 149 #define pcicf_dev cf_loc[PCICF_DEV] 150 #define PCI_UNK_DEV PCICF_DEV_DEFAULT /* wildcarded 'dev' */ 151 152 #define pcicf_function cf_loc[PCICF_FUNCTION] 153 #define PCI_UNK_FUNCTION PCICF_FUNCTION_DEFAULT /* wildcarded 'function' */ 154 155 /* 156 * Configuration space access and utility functions. (Note that most, 157 * e.g. make_tag, conf_read, conf_write are declared by pci_machdep.h.) 158 */ 159 pcireg_t pci_mapreg_type __P((pci_chipset_tag_t, pcitag_t, int)); 160 int pci_mapreg_info __P((pci_chipset_tag_t, pcitag_t, int, pcireg_t, 161 bus_addr_t *, bus_size_t *, int *)); 162 int pci_mapreg_map __P((struct pci_attach_args *, int, pcireg_t, int, 163 bus_space_tag_t *, bus_space_handle_t *, bus_addr_t *, 164 bus_size_t *)); 165 166 int pci_get_capability __P((pci_chipset_tag_t, pcitag_t, int, 167 int *, pcireg_t *)); 168 169 /* 170 * Helper functions for autoconfiguration. 171 */ 172 void pci_devinfo __P((pcireg_t, pcireg_t, int, char *)); 173 void pci_conf_print __P((pci_chipset_tag_t, pcitag_t, 174 void (*)(pci_chipset_tag_t, pcitag_t, const pcireg_t *))); 175 const struct pci_quirkdata * 176 pci_lookup_quirkdata __P((pci_vendor_id_t, pci_product_id_t)); 177 178 /* 179 * Misc. 180 */ 181 char *pci_findvendor __P((pcireg_t)); 182 183 #endif /* _DEV_PCI_PCIVAR_H_ */ 184
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