pcivar.h revision 1.80
1 /* $NetBSD: pcivar.h,v 1.80 2008/04/09 17:01:53 dyoung 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 <sys/device.h> 45 #include <sys/pmf.h> 46 #include <sys/bus.h> 47 #include <dev/pci/pcireg.h> 48 49 /* 50 * Structures and definitions needed by the machine-dependent header. 51 */ 52 typedef u_int32_t pcireg_t; /* configuration space register XXX */ 53 struct pcibus_attach_args; 54 struct pci_softc; 55 56 #ifdef _KERNEL 57 /* 58 * Machine-dependent definitions. 59 */ 60 #include <machine/pci_machdep.h> 61 62 /* 63 * PCI bus attach arguments. 64 */ 65 struct pcibus_attach_args { 66 char *_pba_busname; /* XXX placeholder */ 67 bus_space_tag_t pba_iot; /* pci i/o space tag */ 68 bus_space_tag_t pba_memt; /* pci mem space tag */ 69 bus_dma_tag_t pba_dmat; /* DMA tag */ 70 bus_dma_tag_t pba_dmat64; /* DMA tag */ 71 pci_chipset_tag_t pba_pc; 72 int pba_flags; /* flags; see below */ 73 74 int pba_bus; /* PCI bus number */ 75 76 /* 77 * Pointer to the pcitag of our parent bridge. If there is no 78 * parent bridge, then we assume we are a root bus. 79 */ 80 pcitag_t *pba_bridgetag; 81 82 /* 83 * Interrupt swizzling information. These fields 84 * are only used by secondary busses. 85 */ 86 u_int pba_intrswiz; /* how to swizzle pins */ 87 pcitag_t pba_intrtag; /* intr. appears to come from here */ 88 }; 89 90 /* 91 * PCI device attach arguments. 92 */ 93 struct pci_attach_args { 94 bus_space_tag_t pa_iot; /* pci i/o space tag */ 95 bus_space_tag_t pa_memt; /* pci mem space tag */ 96 bus_dma_tag_t pa_dmat; /* DMA tag */ 97 bus_dma_tag_t pa_dmat64; /* DMA tag */ 98 pci_chipset_tag_t pa_pc; 99 int pa_flags; /* flags; see below */ 100 101 u_int pa_bus; 102 u_int pa_device; 103 u_int pa_function; 104 pcitag_t pa_tag; 105 pcireg_t pa_id, pa_class; 106 107 /* 108 * Interrupt information. 109 * 110 * "Intrline" is used on systems whose firmware puts 111 * the right routing data into the line register in 112 * configuration space. The rest are used on systems 113 * that do not. 114 */ 115 u_int pa_intrswiz; /* how to swizzle pins if ppb */ 116 pcitag_t pa_intrtag; /* intr. appears to come from here */ 117 pci_intr_pin_t pa_intrpin; /* intr. appears on this pin */ 118 pci_intr_line_t pa_intrline; /* intr. routing information */ 119 pci_intr_pin_t pa_rawintrpin; /* unswizzled pin */ 120 }; 121 122 /* 123 * Flags given in the bus and device attachment args. 124 */ 125 #define PCI_FLAGS_IO_ENABLED 0x01 /* I/O space is enabled */ 126 #define PCI_FLAGS_MEM_ENABLED 0x02 /* memory space is enabled */ 127 #define PCI_FLAGS_MRL_OKAY 0x04 /* Memory Read Line okay */ 128 #define PCI_FLAGS_MRM_OKAY 0x08 /* Memory Read Multiple okay */ 129 #define PCI_FLAGS_MWI_OKAY 0x10 /* Memory Write and Invalidate 130 okay */ 131 132 /* 133 * PCI device 'quirks'. 134 * 135 * In general strange behaviour which can be handled by a driver (e.g. 136 * a bridge's inability to pass a type of access correctly) should be. 137 * The quirks table should only contain information which impacts 138 * the operation of the MI PCI code and which can't be pushed lower 139 * (e.g. because it's unacceptable to require a driver to be present 140 * for the information to be known). 141 */ 142 struct pci_quirkdata { 143 pci_vendor_id_t vendor; /* Vendor ID */ 144 pci_product_id_t product; /* Product ID */ 145 int quirks; /* quirks; see below */ 146 }; 147 #define PCI_QUIRK_MULTIFUNCTION 1 148 #define PCI_QUIRK_MONOFUNCTION 2 149 #define PCI_QUIRK_SKIP_FUNC(n) (4 << n) 150 #define PCI_QUIRK_SKIP_FUNC0 PCI_QUIRK_SKIP_FUNC(0) 151 #define PCI_QUIRK_SKIP_FUNC1 PCI_QUIRK_SKIP_FUNC(1) 152 #define PCI_QUIRK_SKIP_FUNC2 PCI_QUIRK_SKIP_FUNC(2) 153 #define PCI_QUIRK_SKIP_FUNC3 PCI_QUIRK_SKIP_FUNC(3) 154 #define PCI_QUIRK_SKIP_FUNC4 PCI_QUIRK_SKIP_FUNC(4) 155 #define PCI_QUIRK_SKIP_FUNC5 PCI_QUIRK_SKIP_FUNC(5) 156 #define PCI_QUIRK_SKIP_FUNC6 PCI_QUIRK_SKIP_FUNC(6) 157 #define PCI_QUIRK_SKIP_FUNC7 PCI_QUIRK_SKIP_FUNC(7) 158 159 struct pci_softc { 160 device_t sc_dev; 161 bus_space_tag_t sc_iot, sc_memt; 162 bus_dma_tag_t sc_dmat; 163 bus_dma_tag_t sc_dmat64; 164 pci_chipset_tag_t sc_pc; 165 int sc_bus, sc_maxndevs; 166 pcitag_t *sc_bridgetag; 167 u_int sc_intrswiz; 168 pcitag_t sc_intrtag; 169 int sc_flags; 170 /* accounting of child devices */ 171 device_t sc_devices[32*8]; 172 #define PCI_SC_DEVICESC(d, f) sc_devices[(d) * 8 + (f)] 173 }; 174 175 struct pci_conf_state { 176 pcireg_t reg[16]; 177 }; 178 179 extern struct cfdriver pci_cd; 180 181 int pcibusprint(void *, const char *); 182 183 /* 184 * Configuration space access and utility functions. (Note that most, 185 * e.g. make_tag, conf_read, conf_write are declared by pci_machdep.h.) 186 */ 187 int pci_mapreg_probe(pci_chipset_tag_t, pcitag_t, int, pcireg_t *); 188 pcireg_t pci_mapreg_type(pci_chipset_tag_t, pcitag_t, int); 189 int pci_mapreg_info(pci_chipset_tag_t, pcitag_t, int, pcireg_t, 190 bus_addr_t *, bus_size_t *, int *); 191 int pci_mapreg_map(struct pci_attach_args *, int, pcireg_t, int, 192 bus_space_tag_t *, bus_space_handle_t *, bus_addr_t *, 193 bus_size_t *); 194 195 int pci_find_rom(struct pci_attach_args *, bus_space_tag_t, bus_space_handle_t, 196 int, bus_space_handle_t *, bus_size_t *); 197 198 int pci_get_capability(pci_chipset_tag_t, pcitag_t, int, int *, pcireg_t *); 199 200 /* 201 * Helper functions for autoconfiguration. 202 */ 203 int pci_probe_device(struct pci_softc *, pcitag_t tag, 204 int (*)(struct pci_attach_args *), struct pci_attach_args *); 205 void pci_devinfo(pcireg_t, pcireg_t, int, char *, size_t); 206 void pci_conf_print(pci_chipset_tag_t, pcitag_t, 207 void (*)(pci_chipset_tag_t, pcitag_t, const pcireg_t *)); 208 const struct pci_quirkdata * 209 pci_lookup_quirkdata(pci_vendor_id_t, pci_product_id_t); 210 211 /* 212 * Helper functions for user access to the PCI bus. 213 */ 214 struct proc; 215 int pci_devioctl(pci_chipset_tag_t, pcitag_t, u_long, void *, 216 int flag, struct lwp *); 217 218 /* 219 * Power Management (PCI 2.2) 220 */ 221 222 #define PCI_PWR_D0 0 223 #define PCI_PWR_D1 1 224 #define PCI_PWR_D2 2 225 #define PCI_PWR_D3 3 226 int pci_powerstate(pci_chipset_tag_t, pcitag_t, const int *, int *); 227 228 /* 229 * Vital Product Data (PCI 2.2) 230 */ 231 int pci_vpd_read(pci_chipset_tag_t, pcitag_t, int, int, pcireg_t *); 232 int pci_vpd_write(pci_chipset_tag_t, pcitag_t, int, int, pcireg_t *); 233 234 /* 235 * Misc. 236 */ 237 const char *pci_findvendor(pcireg_t); 238 const char *pci_findproduct(pcireg_t); 239 int pci_find_device(struct pci_attach_args *pa, 240 int (*match)(struct pci_attach_args *)); 241 int pci_dma64_available(struct pci_attach_args *); 242 void pci_conf_capture(pci_chipset_tag_t, pcitag_t, struct pci_conf_state *); 243 void pci_conf_restore(pci_chipset_tag_t, pcitag_t, struct pci_conf_state *); 244 int pci_get_powerstate(pci_chipset_tag_t, pcitag_t, pcireg_t *); 245 int pci_set_powerstate(pci_chipset_tag_t, pcitag_t, pcireg_t); 246 int pci_activate(pci_chipset_tag_t, pcitag_t, device_t, 247 int (*)(pci_chipset_tag_t, pcitag_t, device_t, pcireg_t)); 248 int pci_activate_null(pci_chipset_tag_t, pcitag_t, device_t, pcireg_t); 249 void pci_disable_retry(pci_chipset_tag_t, pcitag_t); 250 251 /* Device abstraction for inheritance by elanpci(4), for example. */ 252 int pcimatch(device_t, cfdata_t, void *); 253 void pciattach(device_t, device_t, void *); 254 int pcidetach(device_t, int); 255 void pcidevdetached(device_t, device_t); 256 int pcirescan(device_t, const char *, const int *); 257 258 #endif /* _KERNEL */ 259 260 #endif /* _DEV_PCI_PCIVAR_H_ */ 261
Indexes created Sun Sep 28 16:09:52 GMT 2025