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Annotation of sys/arch/i386/pci/pci_machdep.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: pci_machdep.h,v 1.11 2002/03/14 03:15:54 millert Exp $        */
                      2: /*     $NetBSD: pci_machdep.h,v 1.7 1997/06/06 23:29:18 thorpej Exp $  */
                      3:
                      4: /*
                      5:  * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
                      6:  * Copyright (c) 1994 Charles 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 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:  * i386-specific PCI structure and type definitions.
                     40:  * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
                     41:  *
                     42:  * Configuration tag; created from a {bus,device,function} triplet by
                     43:  * pci_make_tag(), and passed to pci_conf_read() and pci_conf_write().
                     44:  * We could instead always pass the {bus,device,function} triplet to
                     45:  * the read and write routines, but this would cause extra overhead.
                     46:  *
                     47:  * Mode 2 is historical and deprecated by the Revision 2.0 specification.
                     48:  */
                     49: union i386_pci_tag_u {
                     50:        u_int32_t mode1;
                     51:        struct {
                     52:                u_int16_t port;
                     53:                u_int8_t enable;
                     54:                u_int8_t forward;
                     55:        } mode2;
                     56: };
                     57:
                     58: extern struct i386_bus_dma_tag pci_bus_dma_tag;
                     59:
                     60: /*
                     61:  * Types provided to machine-independent PCI code
                     62:  */
                     63: typedef void *pci_chipset_tag_t;
                     64: typedef union i386_pci_tag_u pcitag_t;
                     65:
                     66: typedef
                     67: struct {
                     68:        pcitag_t tag;
                     69:        int line, pin;
                     70:        void *link;
                     71: } pci_intr_handle_t;
                     72:
                     73: /*
                     74:  * i386-specific PCI variables and functions.
                     75:  * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
                     76:  */
                     77: extern int pci_mode;
                     78: int            pci_mode_detect(void);
                     79:
                     80: /*
                     81:  * Functions provided to machine-independent PCI code.
                     82:  */
                     83: void           pci_attach_hook(struct device *, struct device *,
                     84:                    struct pcibus_attach_args *);
                     85: int            pci_bus_maxdevs(pci_chipset_tag_t, int);
                     86: pcitag_t       pci_make_tag(pci_chipset_tag_t, int, int, int);
                     87: pcireg_t       pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
                     88: void           pci_conf_write(pci_chipset_tag_t, pcitag_t, int,
                     89:                    pcireg_t);
                     90: struct pci_attach_args;
                     91: int            pci_intr_map(struct pci_attach_args *,
                     92:                    pci_intr_handle_t *);
                     93: #define                pci_intr_line(ih)       ((ih).line)
                     94: const char     *pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
                     95: void           *pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
                     96:                    int, int (*)(void *), void *, char *);
                     97: void           pci_intr_disestablish(pci_chipset_tag_t, void *);
                     98: void           pci_decompose_tag(pci_chipset_tag_t, pcitag_t,
                     99:                    int *, int *, int *);
                    100:
                    101: /*
                    102:  * Section 6.2.4, `Miscellaneous Functions' of the PIC Specification,
                    103:  * says that 255 means `unknown' or `no connection' to the interrupt
                    104:  * controller on a PC.
                    105:  */
                    106: #define        I386_PCI_INTERRUPT_LINE_NO_CONNECTION   0xff