release/src-rt-6.x.4708/cfe/cfe/pci/pci_internal.h

   1 /*
   2  * Copyright (c) 1994 Charles Hannum.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  * 3. All advertising materials mentioning features or use of this software
  13  *    must display the following acknowledgement:
  14  *      This product includes software developed by Charles Hannum.
  15  * 4. The name of the author may not be used to endorse or promote products
  16  *    derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #ifndef _PCI_INTERNAL_H_
  31 #define _PCI_INTERNAL_H_
  32
  33 /*
  34  * Definitions for PCI autoconfiguration.
  35  *
  36  * This file describes types and functions which are used only for
  37  * communication among the PCI modules implementing autoconfiguration.
  38  */
  39
  40 /* Build options. Debug levels >1 are for helping to bring up new
  41    LDT hardware and will be annoyingly verbose otherwise. */
  42
  43 /* PCI_DEBUG enables general checking and tracing. */
  44 #ifndef PCI_DEBUG
  45 #define PCI_DEBUG 0
  46 #endif
  47
  48 /* LDT_DEBUG enables progress/error reports for LDT fabric initialization. */
  49 #ifndef LDT_DEBUG
  50 #define LDT_DEBUG 0
  51 #endif
  52
  53 #ifndef CLOCK_GEARING        /* Temporarily here, should be CONFIG option */
  54 #define CLOCK_GEARING 1
  55 #endif
  56
  57 /* From <cpu>_pci_machdep.c */
  58
  59 int       pci_hwinit(int port, pci_flags_t flags);
  60 void      pci_hwreinit(int port, pci_flags_t flags);
  61 void      pci_businit (int port, int bus, int probe_limit, pci_flags_t flags);
  62 void      pci_businit_hostbridge (pcitag_t tag, pci_flags_t flags);
  63 int       pci_device_preset (pcitag_t tag);
  64 void      pci_device_setup(pcitag_t tag);
  65 void      pci_bridge_setup(pcitag_t tag, pci_flags_t flags);
  66 void      pci_flush(void);
  67
  68 void      pci_break_tag(pcitag_t, int *, int *, int *, int *);
  69
  70 int       pci_canscan(pcitag_t);
  71 int       pci_probe_tag(pcitag_t tag);
  72
  73 pcireg_t  pci_conf_read8(pcitag_t, int);
  74 void      pci_conf_write8(pcitag_t, int, pcireg_t);
  75 pcireg_t  pci_conf_read16(pcitag_t, int);
  76 void      pci_conf_write16(pcitag_t, int, pcireg_t);
  77 pcireg_t  pci_conf_read(pcitag_t, int);
  78 void      pci_conf_write(pcitag_t, int, pcireg_t);
  79 #define   pci_conf_read32       pci_conf_read
  80 #define   pci_conf_write32      pci_conf_write
  81 int       pci_conf_write_acked(pcitag_t, int, pcireg_t);
  82
  83 uint8_t   pci_int_line(uint8_t);
  84
  85 unsigned  pci_msi_index(void);
  86 void      pci_msi_encode(unsigned, uint64_t *, uint16_t *);
  87
  88
  89 /* From <board>_pci.c */
  90
  91 uint8_t   pci_int_shift_0(pcitag_t);
  92 uint8_t   pci_int_map_0(pcitag_t);
  93
  94 /* The following are needed only for boards with chips supporting PCI-X. */
  95
  96 void      pci_clock_reset(void);
  97 void      pci_clock_enable(int);
  98 unsigned int pci_clock_select(unsigned int);
  99
 100
 101 /* From ldtinit.c */
 102
 103 #define LDT_PRIMARY    0
 104 #define LDT_SECONDARY  1
 105 unsigned pci_find_ldt_cap (pcitag_t tag, int secondary);
 106
 107 void ldt_link_reset (pcitag_t tag, int delay);
 108 int  ldt_chain_init (pcitag_t tag, int port, int bus, pci_flags_t flags);
 109
 110 /* From <cpu>_pci_machdep.c */
 111
 112 int pci_maxport(void);
 113 int pci_nextbus(int port);
 114 int pci_maxbus(int port);
 115 struct pci_bus *pci_businfo(int port, int bus);
 116
 117 pcireg_t pci_minmemaddr(int port);
 118 pcireg_t pci_maxmemaddr(int port);
 119 pcireg_t pci_minioaddr(int port);
 120 pcireg_t pci_maxioaddr(int port);
 121
 122 #endif /* _PCI_INTERNAL_H_ */