pci_machdep.c revision 1.4
1214501Srpaulo/* NetBSD: pci_machdep.c,v 1.12 2001/06/19 11:56:27 nonaka Exp $ */ 2214501Srpaulo 3214501Srpaulo/* 4214501Srpaulo * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 5252726Srpaulo * Copyright (c) 1994 Charles M. Hannum. All rights reserved. 6252726Srpaulo * 7214501Srpaulo * Redistribution and use in source and binary forms, with or without 8214501Srpaulo * modification, are permitted provided that the following conditions 9214501Srpaulo * are met: 10214501Srpaulo * 1. Redistributions of source code must retain the above copyright 11214501Srpaulo * notice, this list of conditions and the following disclaimer. 12214501Srpaulo * 2. Redistributions in binary form must reproduce the above copyright 13214501Srpaulo * notice, this list of conditions and the following disclaimer in the 14214501Srpaulo * documentation and/or other materials provided with the distribution. 15214501Srpaulo * 3. All advertising materials mentioning features or use of this software 16214501Srpaulo * must display the following acknowledgement: 17214501Srpaulo * This product includes software developed by Charles M. Hannum. 18214501Srpaulo * 4. The name of the author may not be used to endorse or promote products 19214501Srpaulo * derived from this software without specific prior written permission. 20214501Srpaulo * 21214501Srpaulo * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22214501Srpaulo * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23214501Srpaulo * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24214501Srpaulo * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25214501Srpaulo * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26214501Srpaulo * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27214501Srpaulo * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28214501Srpaulo * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29214501Srpaulo * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30214501Srpaulo * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31214501Srpaulo */ 32214501Srpaulo 33214501Srpaulo/* 34214501Srpaulo * Machine-specific functions for PCI autoconfiguration. 35214501Srpaulo * 36214501Srpaulo * On PCs, there are two methods of generating PCI configuration cycles. 37214501Srpaulo * We try to detect the appropriate mechanism for this machine and set 38214501Srpaulo * up a few function pointers to access the correct method directly. 39214501Srpaulo */ 40214501Srpaulo 41214501Srpaulo#include <sys/types.h> 42214501Srpaulo#include <sys/param.h> 43214501Srpaulo#include <sys/time.h> 44214501Srpaulo#include <sys/systm.h> 45214501Srpaulo#include <sys/errno.h> 46214501Srpaulo#include <sys/extent.h> 47214501Srpaulo#include <sys/device.h> 48214501Srpaulo 49214501Srpaulo#include <uvm/uvm_extern.h> 50214501Srpaulo 51214501Srpaulo#define _POWERPC_BUS_DMA_PRIVATE 52214501Srpaulo#include <machine/bus.h> 53214501Srpaulo#include <machine/intr.h> 54214501Srpaulo 55214501Srpaulo#include <dev/isa/isavar.h> 56214501Srpaulo 57214501Srpaulo#include <dev/pci/pcivar.h> 58214501Srpaulo#include <dev/pci/pcireg.h> 59214501Srpaulo#include <dev/pci/pcidevs.h> 60214501Srpaulo#include <dev/pci/pciconf.h> 61214501Srpaulo 62214501Srpaulovoid 63214501Srpauloibmnws_pci_get_chipset_tag_indirect(pci_chipset_tag_t pc) 64214501Srpaulo{ 65214501Srpaulo 66214501Srpaulo pc->pc_conf_v = (void *)pc; 67214501Srpaulo 68214501Srpaulo pc->pc_attach_hook = genppc_pci_indirect_attach_hook; 69214501Srpaulo pc->pc_bus_maxdevs = ibmnws_pci_bus_maxdevs; 70214501Srpaulo pc->pc_make_tag = genppc_pci_indirect_make_tag; 71214501Srpaulo pc->pc_conf_read = genppc_pci_indirect_conf_read; 72214501Srpaulo pc->pc_conf_write = genppc_pci_indirect_conf_write; 73214501Srpaulo 74214501Srpaulo pc->pc_intr_v = (void *)pc; 75214501Srpaulo 76214501Srpaulo pc->pc_intr_map = genppc_pci_intr_map; 77214501Srpaulo pc->pc_intr_string = genppc_pci_intr_string; 78214501Srpaulo pc->pc_intr_evcnt = genppc_pci_intr_evcnt; 79214501Srpaulo pc->pc_intr_establish = genppc_pci_intr_establish; 80214501Srpaulo pc->pc_intr_disestablish = genppc_pci_intr_disestablish; 81214501Srpaulo 82214501Srpaulo pc->pc_conf_interrupt = genppc_pci_conf_interrupt; 83214501Srpaulo pc->pc_decompose_tag = genppc_pci_indirect_decompose_tag; 84214501Srpaulo pc->pc_conf_hook = ibmnws_pci_conf_hook; 85214501Srpaulo 86214501Srpaulo pc->pc_addr = mapiodev(PCI_MODE1_ADDRESS_REG, 4); 87214501Srpaulo pc->pc_data = mapiodev(PCI_MODE1_DATA_REG, 4); 88214501Srpaulo pc->pc_bus = 0; 89214501Srpaulo pc->pc_node = 0; 90214501Srpaulo pc->pc_memt = 0; 91214501Srpaulo pc->pc_iot = 0; 92214501Srpaulo} 93214501Srpaulo 94214501Srpauloint 95214501Srpauloibmnws_pci_bus_maxdevs(pci_chipset_tag_t pct, int busno) 96214501Srpaulo{ 97214501Srpaulo 98214501Srpaulo /* 99214501Srpaulo * Bus number is irrelevant. Configuration Mechanism 1 is in 100214501Srpaulo * use, can have devices 0-32 (i.e. the `normal' range). 101214501Srpaulo */ 102214501Srpaulo return (32); 103214501Srpaulo} 104214501Srpaulo 105214501Srpauloint 106214501Srpauloibmnws_pci_conf_hook(pci_chipset_tag_t pct, int bus, int dev, int func, pcireg_t id) 107214501Srpaulo{ 108214501Srpaulo 109214501Srpaulo /* 110214501Srpaulo * The P9100 board found in some IBM machines cannot be 111214501Srpaulo * over-configured. 112214501Srpaulo */ 113214501Srpaulo if (PCI_VENDOR(id) == PCI_VENDOR_WEITEK && 114214501Srpaulo PCI_PRODUCT(id) == PCI_PRODUCT_WEITEK_P9100) 115214501Srpaulo return 0; 116214501Srpaulo 117214501Srpaulo return (PCI_CONF_DEFAULT); 118214501Srpaulo} 119214501Srpaulo