0faf6692c9
Changes to device_t struct to accomodate the upcoming PCI IRQ arbitration rewrite; Added device.c/h API to obtain name from the device_t struct; Significant changes to win/win_settings.c to clean up the code a bit and fix bugs; Ported all the CPU and AudioPCI commits from PCem; Added an API call to allow ACPI soft power off to gracefully stop the emulator; Removed the Siemens PCD-2L from the Dev branch because it now works; Removed the Socket 5 HP Vectra from the Dev branch because it now works; Fixed the Compaq Presario and the Micronics Spitfire; Give the IBM PC330 its own list of 486 CPU so it can have DX2's with CPUID 0x470; SMM fixes; Rewrote the SYSENTER, SYSEXIT, SYSCALL, and SYSRET instructions; Changed IDE reset period to match the specification, fixes #929; The keyboard input and output ports are now forced in front of the queue when read, fixes a number of bugs, including the AMI Apollo hanging on soft reset; Added the Intel AN430TX but Dev branched because it does not work; The network code no longer drops packets if the emulated network card has failed to receive them (eg. when the buffer is full); Changes to PCI card adding and renamed some PCI slot types, also added proper AGP bridge slot types; USB UHCI emulation is no longer a stub (still doesn't fully work, but at least Windows XP chk with Debug no longer ASSERT's on it); Fixed NVR on the the SMC FDC37C932QF and APM variants; A number of fixes to Intel 4x0 chipsets, including fixing every register of the 440LX and 440EX; Some ACPI changes.
131 lines
2.9 KiB
C
131 lines
2.9 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Skeleton I/O APIC implementation, currently housing the MPS
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* table patcher for machines that require it.
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*
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*
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*
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* Author: RichardG, <richardg867@gmail.com>
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*
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* Copyright 2020 RichardG.
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#define HAVE_STDARG_H
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#include <86box/86box.h>
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#include <86box/io.h>
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#include <86box/device.h>
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#include <86box/machine.h>
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#include <86box/mem.h>
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#include <86box/chipset.h>
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typedef struct {
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uint8_t dummy;
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} ioapic_t;
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#ifdef ENABLE_IOAPIC_LOG
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int ioapic_do_log = ENABLE_IOAPIC_LOG;
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static void
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ioapic_log(const char *fmt, ...)
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{
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va_list ap;
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if (ioapic_do_log) {
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va_start(ap, fmt);
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pclog_ex(fmt, ap);
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va_end(ap);
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}
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}
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#else
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#define ioapic_log(fmt, ...)
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#endif
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static void
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ioapic_write(uint16_t port, uint8_t val, void *priv)
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{
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uint32_t addr, pcmp;
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/* target POST FF, issued by Award before jumping to the bootloader */
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if (val != 0xff)
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return;
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ioapic_log("IOAPIC: Caught POST %02X\n", val);
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/* The _MP_ table must be located in the BIOS area, the EBDA, or the last 1k of conventional
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memory; at a 16-byte boundary in all cases. Award writes both tables to the BIOS area. */
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for (addr = 0xf0000; addr <= 0xfffff; addr += 16) {
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/* check signature for the _MP_ table (Floating Point Structure) */
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if (mem_readl_phys(addr) != 0x5f504d5f) /* ASCII "_MP_" */
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continue;
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/* read and check pointer to the PCMP table (Configuration Table) */
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pcmp = mem_readl_phys(addr + 4);
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if ((pcmp < 0xf0000) || (pcmp > 0xfffff) || (mem_readl_phys(pcmp) != 0x504d4350)) /* ASCII "PCMP" */
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continue;
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/* patch over the signature on both tables */
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ioapic_log("IOAPIC: Patching _MP_ [%08x] and PCMP [%08x] tables\n", addr, pcmp);
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ram[addr] = ram[addr + 1] = ram[addr + 2] = ram[addr + 3] = 0xff;
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ram[pcmp] = ram[pcmp + 1] = ram[pcmp + 2] = ram[pcmp + 3] = 0xff;
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break;
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}
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}
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static void
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ioapic_reset(ioapic_t *dev)
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{
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}
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static void
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ioapic_close(void *priv)
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{
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ioapic_t *dev = (ioapic_t *) priv;
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io_removehandler(0x80, 1,
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NULL, NULL, NULL, ioapic_write, NULL, NULL, NULL);
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free(dev);
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}
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static void *
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ioapic_init(const device_t *info)
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{
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ioapic_t *dev = (ioapic_t *) malloc(sizeof(ioapic_t));
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memset(dev, 0, sizeof(ioapic_t));
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ioapic_reset(dev);
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io_sethandler(0x80, 1,
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NULL, NULL, NULL, ioapic_write, NULL, NULL, NULL);
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return dev;
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}
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const device_t ioapic_device = {
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"I/O Advanced Programmable Interrupt Controller",
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DEVICE_AT,
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0,
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ioapic_init, ioapic_close, NULL,
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{ NULL }, NULL, NULL,
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NULL
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};
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