sys/arch/bebox/pci/pci_machdep.c

   1 /*      $NetBSD: pci_machdep.c,v 1.16 2008/02/17 03:54:21 kiyohara Exp $        */
   2
   3 /*
   4  * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
   5  * Copyright (c) 1994 Charles M. Hannum.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by Charles M. Hannum.
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 /*
  34  * Machine-specific functions for PCI autoconfiguration.
  35  *
  36  * On PCs, there are two methods of generating PCI configuration cycles.
  37  * We try to detect the appropriate mechanism for this machine and set
  38  * up a few function pointers to access the correct method directly.
  39  */
  40
  41 #include <sys/cdefs.h>
  42 __KERNEL_RCSID(0, "$NetBSD: pci_machdep.c,v 1.16 2008/02/17 03:54:21 kiyohara Exp $");
  43
  44 #include <sys/types.h>
  45 #include <sys/param.h>
  46 #include <sys/time.h>
  47 #include <sys/systm.h>
  48 #include <sys/errno.h>
  49 #include <sys/device.h>
  50
  51 #include <uvm/uvm_extern.h>
  52
  53 #define _POWERPC_BUS_DMA_PRIVATE
  54 #include <machine/bus.h>
  55 #include <machine/intr.h>
  56
  57 #include <powerpc/pio.h>
  58
  59 #include <dev/isa/isavar.h>
  60 #include <dev/pci/pcivar.h>
  61 #include <dev/pci/pcireg.h>
  62 #include <dev/pci/pcidevs.h>
  63
  64 #include <machine/pci_machdep.h>
  65
  66 extern struct genppc_pci_chipset *genppc_pct;
  67
  68 #define PCI_MODE1_ADDRESS_REG   (PREP_BUS_SPACE_IO + 0xcf8)
  69 #define PCI_MODE1_DATA_REG      (PREP_BUS_SPACE_IO + 0xcfc)
  70
  71 void
  72 bebox_pci_get_chipset_tag(pci_chipset_tag_t pc)
  73 {
  74         pc->pc_conf_v = (void *)pc;
  75
  76         pc->pc_attach_hook = genppc_pci_indirect_attach_hook;
  77         pc->pc_bus_maxdevs = genppc_pci_bus_maxdevs;
  78         pc->pc_make_tag = genppc_pci_indirect_make_tag;
  79         pc->pc_conf_read = genppc_pci_indirect_conf_read;
  80         pc->pc_conf_write = genppc_pci_indirect_conf_write;
  81
  82         pc->pc_intr_v = (void *)pc;
  83
  84         pc->pc_intr_map = genppc_pci_intr_map;
  85         pc->pc_intr_string = genppc_pci_intr_string;
  86         pc->pc_intr_evcnt = genppc_pci_intr_evcnt;
  87         pc->pc_intr_establish = genppc_pci_intr_establish;
  88         pc->pc_intr_disestablish = genppc_pci_intr_disestablish;
  89
  90         pc->pc_conf_interrupt = bebox_pci_conf_interrupt;
  91         pc->pc_decompose_tag = genppc_pci_indirect_decompose_tag;
  92         pc->pc_conf_hook = genppc_pci_conf_hook;
  93
  94         pc->pc_addr = mapiodev(PCI_MODE1_ADDRESS_REG, 4);
  95         pc->pc_data = mapiodev(PCI_MODE1_DATA_REG, 4);
  96         pc->pc_bus = 0;
  97         pc->pc_node = 0;
  98         pc->pc_memt = 0;
  99         pc->pc_iot = 0;
 100 }
 101
 102 void
 103 bebox_pci_conf_interrupt(pci_chipset_tag_t pc, int bus, int dev, int pin,
 104     int swiz, int *iline)
 105 {
 106
 107         if (bus == 0) {
 108                 switch (dev) {
 109                 case 12: /*       SCSI is bit 10, mapped to IRQ 26 */
 110                 case 13: /* PCI slot 1 is bit 11, mapped to IRQ 27 */
 111                 case 14: /* PCI slot 2 is bit 12, mapped to IRQ 28 */
 112                 case 15: /* PCI slot 3 is bit 13, mapped to IRQ 29 */
 113 #define  BEBOX_PCIBUS0_DEV2LINE(d)      ((d) + 14)
 114                         *iline = BEBOX_PCIBUS0_DEV2LINE(dev);
 115                 }
 116         } else
 117 #define  BEBOX_PCIBUS_DEV2LINE(d, s)    ((((d) + (s) + 1) & 0x3) + 26)
 118                 *iline = BEBOX_PCIBUS_DEV2LINE(dev, swiz);
 119 }