sys/arch/xen/include/pci_machdep.h

   1 /* $NetBSD: pci_machdep.h,v 1.12 2009/07/29 12:02:06 cegger Exp $ */
   2
   3 /*
   4  * Copyright (c) 2006 Manuel Bouyer.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  *
  26  */
  27
  28 /*
  29  * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
  30  * Copyright (c) 1994 Charles M. Hannum.  All rights reserved.
  31  *
  32  * Redistribution and use in source and binary forms, with or without
  33  * modification, are permitted provided that the following conditions
  34  * are met:
  35  * 1. Redistributions of source code must retain the above copyright
  36  *    notice, this list of conditions and the following disclaimer.
  37  * 2. Redistributions in binary form must reproduce the above copyright
  38  *    notice, this list of conditions and the following disclaimer in the
  39  *    documentation and/or other materials provided with the distribution.
  40  * 3. All advertising materials mentioning features or use of this software
  41  *    must display the following acknowledgement:
  42  *      This product includes software developed by Charles M. Hannum.
  43  * 4. The name of the author may not be used to endorse or promote products
  44  *    derived from this software without specific prior written permission.
  45  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  46  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  47  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  48  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  49  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  50  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  51  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  52  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  53  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  54  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  55  */
  56
  57 #ifndef _XEN_PCI_MACHDEP_H_
  58 #define _XEN_PCI_MACHDEP_H_
  59
  60 #include "opt_xen.h"
  61
  62 struct pci_attach_args;
  63
  64 extern struct x86_bus_dma_tag pci_bus_dma_tag;
  65 #ifdef _LP64
  66 extern struct x86_bus_dma_tag pci_bus_dma64_tag;
  67 #endif
  68
  69 /* Some values appropriate for x86, from x86/include/pci_machdep.h */
  70 #define __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH
  71 #define PCI_PREFER_IOSPACE
  72
  73 union x86_pci_tag_u {
  74         uint32_t mode1;
  75         struct {
  76                 uint16_t port;
  77                 uint8_t enable;
  78                 uint8_t forward;
  79         } mode2;
  80 };
  81
  82 typedef union x86_pci_tag_u pcitag_t;
  83
  84 #ifndef DOM0OPS
  85 int             xpci_enumerate_bus(struct pci_softc *, const int *,
  86                    int (*)(struct pci_attach_args *), struct pci_attach_args *);
  87 #define PCI_MACHDEP_ENUMERATE_BUS xpci_enumerate_bus
  88 #endif
  89 typedef void *pci_chipset_tag_t;
  90
  91 typedef struct xen_intr_handle pci_intr_handle_t;
  92
  93 /* functions provided to MI PCI */
  94 struct pci_attach_args;
  95
  96 void            pci_attach_hook(device_t, device_t,
  97                     struct pcibus_attach_args *);
  98 int             pci_bus_maxdevs(pci_chipset_tag_t, int);
  99 pcitag_t        pci_make_tag(pci_chipset_tag_t, int, int, int);
 100 void            pci_decompose_tag(pci_chipset_tag_t, pcitag_t,
 101                     int *, int *, int *);
 102 pcireg_t        pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
 103 void            pci_conf_write(pci_chipset_tag_t, pcitag_t, int,
 104                     pcireg_t);
 105 int             pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
 106 const char      *pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
 107 const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t);
 108 void            *pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
 109                     int, int (*)(void *), void *);
 110 void            pci_intr_disestablish(pci_chipset_tag_t, void *);
 111 int             xen_pci_enumerate_bus(struct pci_softc *, const int *,
 112                    int (*)(struct pci_attach_args *), struct pci_attach_args *);
 113
 114 /* Extract Bus Number for a host bridge or -1 if unknown. */
 115 int             pchb_get_bus_number(pci_chipset_tag_t, pcitag_t);
 116
 117 /*
 118  * Section 6.2.4, `Miscellaneous Functions' of the PCI Specification,
 119  * says that 255 means `unknown' or `no connection' to the interrupt
 120  * controller on a PC.
 121  */
 122 #define X86_PCI_INTERRUPT_LINE_NO_CONNECTION    0xff
 123
 124 extern int pci_mode;
 125 int pci_mode_detect(void);
 126 int pci_bus_flags(void);
 127
 128 void pci_device_foreach(pci_chipset_tag_t, int,
 129                         void (*)(pci_chipset_tag_t, pcitag_t, void*),
 130                         void *);
 131
 132 void pci_device_foreach_min(pci_chipset_tag_t, int, int,
 133                             void (*)(pci_chipset_tag_t, pcitag_t, void*),
 134                             void *);
 135
 136 void pci_bridge_foreach(pci_chipset_tag_t, int, int,
 137         void (*) (pci_chipset_tag_t, pcitag_t, void *), void *);
 138
 139 #endif /* _XEN_PCI_MACHDEP_H_ */