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