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 62void 63ibmnws_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 105int 106ibmnws_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 116int 117ibmnws_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