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456 lines
12 KiB
C
456 lines
12 KiB
C
/**************************************************************************
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**
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** $Id: pcisupport.c,v 1.10 1995/02/27 17:22:09 se Exp $
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**
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** Device driver for INTEL PCI chipsets.
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**
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** 386bsd / FreeBSD
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**
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**-------------------------------------------------------------------------
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**
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** Written for 386bsd and FreeBSD by
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** wolf@dentaro.gun.de Wolfgang Stanglmeier
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** se@mi.Uni-Koeln.de Stefan Esser
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**
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**-------------------------------------------------------------------------
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**
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** Copyright (c) 1994 Stefan Esser. All rights reserved.
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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. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**
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***************************************************************************
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*/
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#define __PCISUPPORT_C_PATCHLEVEL__ "pl2 95/02/27"
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/*==========================================================
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**
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** Include files
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**
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**==========================================================
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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/kernel.h>
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#include <pci/pcivar.h>
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#include <pci/pcireg.h>
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extern void printf();
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extern int bootverbose;
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/*---------------------------------------------------------
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**
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** Intel chipsets for 486 / Pentium processor
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**
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**---------------------------------------------------------
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*/
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static char* chipset_probe (pcici_t tag, pcidi_t type);
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static void chipset_attach(pcici_t tag, int unit);
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static u_long chipset_count;
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struct pci_device chipset_device = {
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"chip",
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chipset_probe,
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chipset_attach,
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&chipset_count
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};
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DATA_SET (pcidevice_set, chipset_device);
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static char confread(pcici_t config_id, int port);
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struct condmsg {
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unsigned char port;
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unsigned char mask;
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unsigned char value;
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char flags;
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char *text;
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};
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#define M_EQ 0 /* mask and return true if equal */
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#define M_NE 1 /* mask and return true if not equal */
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#define TRUE 2 /* don't read config, always true */
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static char* chipset_probe (pcici_t tag, pcidi_t type)
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{
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switch (type) {
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case 0x04848086:
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return ("Intel 82378IB PCI-ISA bridge");
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case 0x04838086:
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return ("Intel 82424ZX cache DRAM controller");
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case 0x04828086:
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return ("Intel 82375EB PCI-EISA bridge");
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case 0x04a38086:
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return ("Intel 82434LX PCI cache memory controller");
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};
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return ((char*)0);
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}
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struct condmsg conf82424zx[] =
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{
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{ 0x00, 0x00, 0x00, TRUE, "\tCPU: " },
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{ 0x50, 0xe0, 0x00, M_EQ, "486DX" },
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{ 0x50, 0xe0, 0x20, M_EQ, "486SX" },
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{ 0x50, 0xe0, 0x40, M_EQ, "486DX2 or 486DX4" },
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{ 0x50, 0xe0, 0x80, M_EQ, "Overdrive (writeback)" },
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{ 0x00, 0x00, 0x00, TRUE, ", bus=" },
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{ 0x50, 0x03, 0x00, M_EQ, "25MHz" },
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{ 0x50, 0x03, 0x01, M_EQ, "33MHz" },
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{ 0x53, 0x01, 0x01, TRUE, ", CPU->Memory posting "},
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{ 0x53, 0x01, 0x00, M_EQ, "OFF" },
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{ 0x53, 0x01, 0x01, M_EQ, "ON" },
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{ 0x56, 0x30, 0x00, M_NE, "\n\tWarning:" },
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{ 0x56, 0x20, 0x00, M_NE, " NO cache parity!" },
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{ 0x56, 0x10, 0x00, M_NE, " NO DRAM parity!" },
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{ 0x55, 0x04, 0x04, M_EQ, "\n\tWarning: refresh OFF! " },
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{ 0x00, 0x00, 0x00, TRUE, "\n\tCache: " },
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{ 0x52, 0x01, 0x00, M_EQ, "None" },
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{ 0x52, 0xc1, 0x01, M_EQ, "64KB" },
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{ 0x52, 0xc1, 0x41, M_EQ, "128KB" },
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{ 0x52, 0xc1, 0x81, M_EQ, "256KB" },
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{ 0x52, 0xc1, 0xc1, M_EQ, "512KB" },
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{ 0x52, 0x03, 0x01, M_EQ, " writethrough" },
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{ 0x52, 0x03, 0x03, M_EQ, " writeback" },
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{ 0x52, 0x01, 0x01, M_EQ, ", cache clocks=" },
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{ 0x52, 0x05, 0x01, M_EQ, "3-1-1-1" },
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{ 0x52, 0x05, 0x05, M_EQ, "2-1-1-1" },
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{ 0x00, 0x00, 0x00, TRUE, "\n\tDRAM:" },
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{ 0x55, 0x43, 0x00, M_NE, " page mode" },
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{ 0x55, 0x02, 0x02, M_EQ, " code fetch" },
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{ 0x55, 0x43, 0x43, M_EQ, "," },
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{ 0x55, 0x43, 0x42, M_EQ, " and" },
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{ 0x55, 0x40, 0x40, M_EQ, " read" },
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{ 0x55, 0x03, 0x03, M_EQ, " and" },
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{ 0x55, 0x43, 0x41, M_EQ, " and" },
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{ 0x55, 0x01, 0x01, M_EQ, " write" },
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{ 0x55, 0x43, 0x00, M_NE, "," },
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{ 0x00, 0x00, 0x00, TRUE, " memory clocks=" },
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{ 0x55, 0x20, 0x00, M_EQ, "X-2-2-2" },
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{ 0x55, 0x20, 0x20, M_EQ, "X-1-2-1" },
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{ 0x00, 0x00, 0x00, TRUE, "\n\tCPU->PCI: posting " },
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{ 0x53, 0x02, 0x00, M_NE, "ON" },
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{ 0x53, 0x02, 0x00, M_EQ, "OFF" },
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{ 0x00, 0x00, 0x00, TRUE, ", burst mode " },
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{ 0x54, 0x02, 0x00, M_NE, "ON" },
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{ 0x54, 0x02, 0x00, M_EQ, "OFF" },
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{ 0x00, 0x00, 0x00, TRUE, "\n\tPCI->Memory: posting " },
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{ 0x54, 0x01, 0x00, M_NE, "ON" },
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{ 0x54, 0x01, 0x00, M_EQ, "OFF" },
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{ 0x00, 0x00, 0x00, TRUE, "\n" },
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/* end marker */
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{ 0 }
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};
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struct condmsg conf82434lx[] =
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{
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{ 0x00, 0x00, 0x00, TRUE, "\tCPU: " },
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{ 0x50, 0xe3, 0x82, M_EQ, "Pentium, 60MHz" },
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{ 0x50, 0xe3, 0x83, M_EQ, "Pentium, 66MHz" },
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{ 0x50, 0xe3, 0xa2, M_EQ, "Pentium, 90MHz" },
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{ 0x50, 0xe3, 0xa3, M_EQ, "Pentium, 100MHz" },
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{ 0x50, 0xc2, 0x82, M_NE, "(unknown)" },
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{ 0x50, 0x04, 0x00, M_EQ, " (primary cache OFF)" },
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{ 0x53, 0x01, 0x01, TRUE, ", CPU->Memory posting "},
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{ 0x53, 0x01, 0x01, M_NE, "OFF" },
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{ 0x53, 0x01, 0x01, M_EQ, "ON" },
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{ 0x53, 0x04, 0x00, M_NE, ", read around write"},
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{ 0x71, 0xc0, 0x00, M_NE, "\n\tWarning: NO cache parity!" },
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{ 0x57, 0x20, 0x00, M_NE, "\n\tWarning: NO DRAM parity!" },
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{ 0x55, 0x01, 0x01, M_EQ, "\n\tWarning: refresh OFF! " },
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{ 0x00, 0x00, 0x00, TRUE, "\n\tCache: " },
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{ 0x52, 0x01, 0x00, M_EQ, "None" },
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{ 0x52, 0x81, 0x01, M_EQ, "" },
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{ 0x52, 0xc1, 0x81, M_EQ, "256KB" },
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{ 0x52, 0xc1, 0xc1, M_EQ, "512KB" },
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{ 0x52, 0x03, 0x01, M_EQ, " writethrough" },
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{ 0x52, 0x03, 0x03, M_EQ, " writeback" },
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{ 0x52, 0x01, 0x01, M_EQ, ", cache clocks=" },
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{ 0x52, 0x20, 0x00, M_EQ, "3-2-2-2/4-2-2-2" },
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{ 0x52, 0x20, 0x00, M_NE, "3-1-1-1" },
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{ 0x00, 0x00, 0x00, TRUE, "\n\tDRAM:" },
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{ 0x57, 0x10, 0x00, M_EQ, " page mode" },
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{ 0x00, 0x00, 0x00, TRUE, " memory clocks=" },
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{ 0x57, 0xc0, 0x00, M_EQ, "X-4-4-4 (70ns)" },
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{ 0x57, 0xc0, 0x40, M_EQ, "X-4-4-4/X-3-3-3 (60ns)" },
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{ 0x57, 0xc0, 0x80, M_EQ, "???" },
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{ 0x57, 0xc0, 0xc0, M_EQ, "X-3-3-3 (50ns)" },
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{ 0x00, 0x00, 0x00, TRUE, "\n\tCPU->PCI: posting " },
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{ 0x53, 0x02, 0x02, M_EQ, "ON" },
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{ 0x53, 0x02, 0x00, M_EQ, "OFF" },
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{ 0x00, 0x00, 0x00, TRUE, ", burst mode " },
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{ 0x54, 0x02, 0x00, M_NE, "ON" },
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{ 0x54, 0x02, 0x00, M_EQ, "OFF" },
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{ 0x54, 0x04, 0x00, TRUE, ", PCI clocks=" },
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{ 0x54, 0x04, 0x00, M_EQ, "2-2-2-2" },
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{ 0x54, 0x04, 0x00, M_NE, "2-1-1-1" },
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{ 0x00, 0x00, 0x00, TRUE, "\n\tPCI->Memory: posting " },
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{ 0x54, 0x01, 0x00, M_NE, "ON" },
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{ 0x54, 0x01, 0x00, M_EQ, "OFF" },
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{ 0x00, 0x00, 0x00, TRUE, "\n" },
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/* end marker */
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{ 0 }
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};
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static char confread (pcici_t config_id, int port)
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{
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unsigned long portw = port & ~3;
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unsigned long ports = (port - portw) << 3;
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unsigned long l = pci_conf_read (config_id, portw);
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return (l >> ports);
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}
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static void writeconfig(pcici_t config_id, struct condmsg *tbl)
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{
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while (tbl->text) {
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int cond = 0;
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if (tbl->flags == TRUE) {
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cond = 1;
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} else {
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unsigned char v = (unsigned char) confread(config_id, tbl->port);
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switch (tbl->flags) {
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case M_EQ:
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if ((v & tbl->mask) == tbl->value) cond = 1;
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break;
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case M_NE:
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if ((v & tbl->mask) != tbl->value) cond = 1;
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break;
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}
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}
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if (cond) printf ("%s", tbl->text);
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tbl++;
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}
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}
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void chipset_attach(pcici_t config_id, int unit)
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{
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if (bootverbose) {
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switch (pci_conf_read (config_id, 0)) {
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case 0x04838086:
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writeconfig (config_id, conf82424zx);
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break;
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case 0x04a38086:
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writeconfig (config_id, conf82434lx);
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break;
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case 0x04848086:
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case 0x04828086:
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printf ("\t[40] %lx [50] %lx [54] %lx\n",
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pci_conf_read (config_id, 0x40),
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pci_conf_read (config_id, 0x50),
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pci_conf_read (config_id, 0x54));
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break;
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};
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}
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}
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/*---------------------------------------------------------
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**
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** Catchall driver for pci-pci bridges.
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**
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**---------------------------------------------------------
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*/
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static char* ppb_probe (pcici_t tag, pcidi_t type);
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static void ppb_attach(pcici_t tag, int unit);
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static u_long ppb_count;
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struct pci_device ppb_device = {
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"ppb",
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ppb_probe,
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ppb_attach,
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&ppb_count
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};
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DATA_SET (pcidevice_set, ppb_device);
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static char* ppb_probe (pcici_t tag, pcidi_t type)
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{
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int data = pci_conf_read(tag, PCI_CLASS_REG);
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if ((data & (PCI_CLASS_MASK|PCI_SUBCLASS_MASK)) ==
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(PCI_CLASS_BRIDGE|PCI_SUBCLASS_BRIDGE_PCI))
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return ("PCI-PCI bridge");
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return ((char*)0);
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}
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static void ppb_attach(pcici_t tag, int unit)
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{
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/*
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** XXX should read bus number from device
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*/
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(void) pci_map_bus (tag, 1);
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}
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/*---------------------------------------------------------
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**
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** Catchall driver for VGA devices
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**
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**
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** By Garrett Wollman
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** <wollman@halloran-eldar.lcs.mit.edu>
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**
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**---------------------------------------------------------
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*/
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static char* vga_probe (pcici_t tag, pcidi_t type);
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static void vga_attach(pcici_t tag, int unit);
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static u_long vga_count;
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struct pci_device vga_device = {
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"vga",
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vga_probe,
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vga_attach,
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&vga_count
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};
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DATA_SET (pcidevice_set, vga_device);
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static char* vga_probe (pcici_t tag, pcidi_t type)
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{
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int data = pci_conf_read(tag, PCI_CLASS_REG);
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switch (data & PCI_CLASS_MASK) {
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case PCI_CLASS_PREHISTORIC:
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if ((data & PCI_SUBCLASS_MASK)
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!= PCI_SUBCLASS_PREHISTORIC_VGA)
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break;
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case PCI_CLASS_DISPLAY:
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if ((data & PCI_SUBCLASS_MASK)
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== PCI_SUBCLASS_DISPLAY_VGA)
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return "VGA-compatible display device";
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else
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return ("Display device");
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};
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return ((char*)0);
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}
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static void vga_attach(pcici_t tag, int unit)
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{
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/*
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** The assigned adresses may not be remapped,
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** because certain values are assumed by the console driver.
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*/
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#if 0
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vm_offset_t va;
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vm_offset_t pa;
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int reg;
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for (reg = PCI_MAP_REG_START; reg < PCI_MAP_REG_END; reg += 4)
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(void) pci_map_mem (tag, reg, &va, &pa);
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#endif
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}
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/*---------------------------------------------------------
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**
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** Hook for loadable pci drivers
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**
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**---------------------------------------------------------
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*/
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static char* lkm_probe (pcici_t tag, pcidi_t type);
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static void lkm_attach(pcici_t tag, int unit);
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static u_long lkm_count;
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struct pci_device lkm_device = {
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"lkm",
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lkm_probe,
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lkm_attach,
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&lkm_count
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};
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DATA_SET (pcidevice_set, lkm_device);
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static char* lkm_probe (pcici_t tag, pcidi_t type)
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{
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/*
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** Should try to load a matching driver.
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** XXX Not yet!
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*/
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return ((char*)0);
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}
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static void lkm_attach(pcici_t tag, int unit)
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{
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}
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/*---------------------------------------------------------
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**
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** Devices to ignore
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**
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**---------------------------------------------------------
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*/
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static char* ign_probe (pcici_t tag, pcidi_t type);
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static void ign_attach(pcici_t tag, int unit);
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static u_long ign_count;
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struct pci_device ign_device = {
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NULL,
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ign_probe,
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ign_attach,
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&ign_count
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};
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DATA_SET (pcidevice_set, ign_device);
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static char* ign_probe (pcici_t tag, pcidi_t type)
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{
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switch (type) {
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case 0x10001042ul: /* wd */
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return ("");
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};
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return ((char*)0);
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}
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static void ign_attach(pcici_t tag, int unit)
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{
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}
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