159 lines
5.3 KiB
C
159 lines
5.3 KiB
C
/* $NetBSD: pchb.c,v 1.4 2006/06/06 08:58:09 rjs Exp $ */
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/*-
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* Copyright (c) 1996 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <machine/bus.h>
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#include <machine/pio.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcidevs.h>
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int pchbmatch(struct device *, struct cfdata *, void *);
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void pchbattach(struct device *, struct device *, void *);
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CFATTACH_DECL(pchb, sizeof(struct device),
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pchbmatch, pchbattach, NULL, NULL);
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int
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pchbmatch(struct device *parent, struct cfdata *cf, void *aux)
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{
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struct pci_attach_args *pa = aux;
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/*
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* Match all known PCI host chipsets.
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*/
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if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
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PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_HOST) {
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return (1);
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}
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return (0);
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}
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void
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pchbattach(struct device *parent, struct device *self, void *aux)
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{
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struct pci_attach_args *pa = aux;
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pcireg_t reg1, reg2;
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char devinfo[256];
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const char * s1;
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const char * s2;
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printf("\n");
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/*
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* All we do is print out a description. Eventually, we
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* might want to add code that does something that's
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* possibly chipset-specific.
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*/
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pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
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printf("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo,
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PCI_REVISION(pa->pa_class));
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#define IBM_82660_CACHE_STATUS 0xB1
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#define IBM_82660_CACHE_STATUS_L1_EN 0x01
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#define IBM_82660_CACHE_STATUS_L2_EN 0x02
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#define IBM_82660_OPTIONS_1 0xBA
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#define IBM_82660_OPTIONS_1_MCP 0x01
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#define IBM_82660_OPTIONS_1_TEA 0x02
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#define IBM_82660_OPTIONS_1_ISA 0x04
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#define IBM_82660_OPTIONS_3 0xD4
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#define IBM_82660_OPTIONS_3_ECC 0x01
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#define IBM_82660_OPTIONS_3_DRAM 0x04
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#define IBM_82660_OPTIONS_3_SRAM 0x08
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#define IBM_82660_OPTIONS_3_SNOOP 0x80
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#define IBM_82660_SYSTEM_CTRL 0x81C
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#define IBM_82660_SYSTEM_CTRL_L2_EN 0x40
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#define IBM_82660_SYSTEM_CTRL_L2_MI 0x80
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switch (PCI_VENDOR(pa->pa_id)) {
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case PCI_VENDOR_IBM:
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switch (PCI_PRODUCT(pa->pa_id)) {
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case PCI_PRODUCT_IBM_82660:
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reg1 = pci_conf_read(pa->pa_pc, pa->pa_tag,
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IBM_82660_CACHE_STATUS);
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reg2 = in32rb (PREP_BUS_SPACE_IO + IBM_82660_SYSTEM_CTRL);
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if (reg2 & IBM_82660_SYSTEM_CTRL_L2_EN) {
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if (reg1 & IBM_82660_CACHE_STATUS_L2_EN)
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s1 = "internal enabled";
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else
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s1 = "enabled";
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if (reg2 & IBM_82660_SYSTEM_CTRL_L2_MI)
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s2 = "(normal operation)";
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else
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s2 = "(miss updates inhibited)";
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} else {
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s1 = "disabled";
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s2 = "";
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}
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printf("%s: L1: %s L2: %s %s\n", self->dv_xname,
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(reg1 & IBM_82660_CACHE_STATUS_L1_EN) ? "enabled" : "disabled",
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s1, s2);
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reg1 = pci_conf_read(pa->pa_pc, pa->pa_tag,
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IBM_82660_OPTIONS_1);
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printf ("%s: MCP# assertion %s TEA# assertion %s\n", self->dv_xname,
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(reg1 & IBM_82660_OPTIONS_1_MCP) ? "enabled" : "disabled",
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(reg1 & IBM_82660_OPTIONS_1_TEA) ? "enabled" : "disabled");
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printf ("%s: PCI/ISA I/O mapping %s\n", self->dv_xname,
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(reg1 & IBM_82660_OPTIONS_1_ISA) ? "contiguous" : "non-contiguous");
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reg1 = pci_conf_read(pa->pa_pc, pa->pa_tag,
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IBM_82660_OPTIONS_3);
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printf ("%s: DRAM %s (%s) SRAM %s\n", self->dv_xname,
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(reg1 & IBM_82660_OPTIONS_3_DRAM) ? "EDO" : "standard",
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(reg1 & IBM_82660_OPTIONS_3_ECC) ? "ECC" : "parity",
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(reg1 & IBM_82660_OPTIONS_3_SRAM) ? "sync" : "async");
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printf ("%s: Snoop mode %s\n", self->dv_xname,
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(reg1 & IBM_82660_OPTIONS_3_SNOOP) ? "603" : "601/604");
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}
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}
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}
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