diff options
Diffstat (limited to 'sys/arch/amd64/include/pci_machdep.h')
| -rw-r--r-- | sys/arch/amd64/include/pci_machdep.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/sys/arch/amd64/include/pci_machdep.h b/sys/arch/amd64/include/pci_machdep.h new file mode 100644 index 00000000000..e7852418297 --- /dev/null +++ b/sys/arch/amd64/include/pci_machdep.h @@ -0,0 +1,110 @@ +/* $OpenBSD: pci_machdep.h,v 1.1 2004/01/28 01:39:39 mickey Exp $ */ +/* $NetBSD: pci_machdep.h,v 1.1 2003/02/26 21:26:11 fvdl Exp $ */ + +/* + * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. + * Copyright (c) 1994 Charles M. Hannum. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Charles M. Hannum. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * Machine-specific definitions for PCI autoconfiguration. + */ + +/* + * i386-specific PCI structure and type definitions. + * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE. + * + * Configuration tag; created from a {bus,device,function} triplet by + * pci_make_tag(), and passed to pci_conf_read() and pci_conf_write(). + * We could instead always pass the {bus,device,function} triplet to + * the read and write routines, but this would cause extra overhead. + * + * Mode 2 is historical and deprecated by the Revision 2.0 specification. + */ +union x86_pci_tag_u { + u_int32_t mode1; + struct { + u_int16_t port; + u_int8_t enable; + u_int8_t forward; + } mode2; +}; + +extern struct x86_bus_dma_tag pci_bus_dma_tag; + +/* + * Types provided to machine-independent PCI code + */ +typedef void *pci_chipset_tag_t; +typedef union x86_pci_tag_u pcitag_t; +typedef int pci_intr_handle_t; + +/* + * i386-specific PCI variables and functions. + * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE. + */ +extern int pci_mode; +int pci_mode_detect(void); +int pci_bus_flags(void); +struct pci_attach_args; + +/* + * Functions provided to machine-independent PCI code. + */ +void pci_attach_hook(struct device *, struct device *, + struct pcibus_attach_args *); +int pci_bus_maxdevs(pci_chipset_tag_t, int); +pcitag_t pci_make_tag(pci_chipset_tag_t, int, int, int); +void pci_decompose_tag(pci_chipset_tag_t, pcitag_t, + int *, int *, int *); +pcireg_t pci_conf_read(pci_chipset_tag_t, pcitag_t, int); +void pci_conf_write(pci_chipset_tag_t, pcitag_t, int, + pcireg_t); +int pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *); +const char *pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t); +const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t); +void *pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t, + int, int (*)(void *), void *, char *); +void pci_intr_disestablish(pci_chipset_tag_t, void *); +void pci_decompose_tag(pci_chipset_tag_t, pcitag_t, + int *, int *, int *); + +#define pci_enumerate_bus(sc, m, p) \ + pci_enumerate_bus_generic((sc), (m), (p)) + +/* + * ALL OF THE FOLLOWING ARE MACHINE-DEPENDENT, AND SHOULD NOT BE USED + * BY PORTABLE CODE. + */ + +/* + * Section 6.2.4, `Miscellaneous Functions' of the PCI Specification, + * says that 255 means `unknown' or `no connection' to the interrupt + * controller on a PC. + */ +#define X86_PCI_INTERRUPT_LINE_NO_CONNECTION 0xff |