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      1 /*	$NetBSD: pci_machdep.c,v 1.10 2016/10/19 00:08:41 nonaka 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/types.h>
     42 #include <sys/param.h>
     43 #include <sys/time.h>
     44 #include <sys/systm.h>
     45 #include <sys/errno.h>
     46 #include <sys/extent.h>
     47 #include <sys/device.h>
     48 
     49 #include <uvm/uvm_extern.h>
     50 
     51 #define _POWERPC_BUS_DMA_PRIVATE
     52 #include <sys/bus.h>
     53 #include <machine/intr.h>
     54 
     55 #include <dev/isa/isavar.h>
     56 
     57 #include <dev/pci/pcivar.h>
     58 #include <dev/pci/pcireg.h>
     59 #include <dev/pci/pcidevs.h>
     60 #include <dev/pci/pciconf.h>
     61 
     62 void
     63 ibmnws_pci_get_chipset_tag_indirect(pci_chipset_tag_t pc)
     64 {
     65 
     66 	pc->pc_conf_v = (void *)pc;
     67 
     68 	pc->pc_attach_hook = genppc_pci_indirect_attach_hook;
     69 	pc->pc_bus_maxdevs = ibmnws_pci_bus_maxdevs;
     70 	pc->pc_make_tag = genppc_pci_indirect_make_tag;
     71 	pc->pc_conf_read = genppc_pci_indirect_conf_read;
     72 	pc->pc_conf_write = genppc_pci_indirect_conf_write;
     73 
     74 	pc->pc_intr_v = (void *)pc;
     75 
     76 	pc->pc_intr_map = genppc_pci_intr_map;
     77 	pc->pc_intr_string = genppc_pci_intr_string;
     78 	pc->pc_intr_evcnt = genppc_pci_intr_evcnt;
     79 	pc->pc_intr_establish = genppc_pci_intr_establish;
     80 	pc->pc_intr_disestablish = genppc_pci_intr_disestablish;
     81 	pc->pc_intr_setattr = genppc_pci_intr_setattr;
     82 	pc->pc_intr_type = genppc_pci_intr_type;
     83 	pc->pc_intr_alloc = genppc_pci_intr_alloc;
     84 	pc->pc_intr_release = genppc_pci_intr_release;
     85 	pc->pc_intx_alloc = genppc_pci_intx_alloc;
     86 
     87 	pc->pc_msi_v = (void *)pc;
     88 	genppc_pci_chipset_msi_init(pc);
     89 
     90 	pc->pc_msix_v = (void *)pc;
     91 	genppc_pci_chipset_msix_init(pc);
     92 
     93 	pc->pc_conf_interrupt = genppc_pci_conf_interrupt;
     94 	pc->pc_decompose_tag = genppc_pci_indirect_decompose_tag;
     95 	pc->pc_conf_hook = ibmnws_pci_conf_hook;
     96 
     97 	pc->pc_addr = mapiodev(PCI_MODE1_ADDRESS_REG, 4, false);
     98 	pc->pc_data = mapiodev(PCI_MODE1_DATA_REG, 4, false);
     99 	pc->pc_bus = 0;
    100 	pc->pc_node = 0;
    101 	pc->pc_memt = 0;
    102 	pc->pc_iot = 0;
    103 }
    104 
    105 int
    106 ibmnws_pci_bus_maxdevs(void *v, int busno)
    107 {
    108 
    109 	/*
    110 	 * Bus number is irrelevant.  Configuration Mechanism 1 is in
    111 	 * use, can have devices 0-32 (i.e. the `normal' range).
    112 	 */
    113 	return (32);
    114 }
    115 
    116 int
    117 ibmnws_pci_conf_hook(void *v, int bus, int dev, int func, pcireg_t id)
    118 {
    119 
    120 	/*
    121 	 * The P9100 board found in some IBM machines cannot be
    122 	 * over-configured.
    123 	 */
    124 	if (PCI_VENDOR(id) == PCI_VENDOR_WEITEK &&
    125 	    PCI_PRODUCT(id) == PCI_PRODUCT_WEITEK_P9100)
    126 		return 0;
    127 
    128 	return (PCI_CONF_DEFAULT);
    129 }
    130