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Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/v86bios/int.c')
-rwxr-xr-xboard/MAI/bios_emulator/scitech/src/v86bios/int.c238
1 files changed, 238 insertions, 0 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/v86bios/int.c b/board/MAI/bios_emulator/scitech/src/v86bios/int.c
new file mode 100755
index 0000000..3504c6c
--- /dev/null
+++ b/board/MAI/bios_emulator/scitech/src/v86bios/int.c
@@ -0,0 +1,238 @@
+/*
+ * Copyright 1999 Egbert Eich
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the authors not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. The authors makes no representations
+ * about the suitability of this software for any purpose. It is provided
+ * "as is" without express or implied warranty.
+ *
+ * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+#include "debug.h"
+#if defined(__alpha__) || defined (__ia64__)
+#include <sys/io.h>
+#endif
+
+#include "v86bios.h"
+#include "AsmMacros.h"
+#include "pci.h"
+
+static int int1A_handler(struct regs86 *regs);
+static int int42_handler(int num, struct regs86 *regs);
+
+int
+int_handler(int num, struct regs86 *regs)
+{
+ switch (num) {
+ case 0x10:
+ case 0x42:
+ return (int42_handler(num,regs));
+ case 0x1A:
+ return (int1A_handler(regs));
+ default:
+ return 0;
+ }
+ return 0;
+}
+
+static int
+int42_handler(int num,struct regs86 *regs)
+{
+ unsigned char c;
+ CARD32 val;
+
+ i_printf("int 0x%x: ax:0x%lx bx:0x%lx cx:0x%lx dx:0x%lx\n",num,
+ regs->eax,regs->ebx, regs->ecx, regs->edx);
+
+ /*
+ * video bios has modified these -
+ * leave it to the video bios to do this
+ */
+
+ val = getIntVect(num);
+ if (val != 0xF000F065)
+ return 0;
+
+ if ((regs->ebx & 0xff) == 0x32) {
+ switch (regs->eax & 0xFFFF) {
+ case 0x1200:
+ i_printf("enabling video\n");
+ c = inb(0x3cc);
+ c |= 0x02;
+ outb(0x3c2,c);
+ return 1;
+ case 0x1201:
+ i_printf("disabling video\n");
+ c = inb(0x3cc);
+ c &= ~0x02;
+ outb(0x3c2,c);
+ return 1;
+ default:
+ }
+ }
+ if (num == 0x42)
+ return 1;
+ else
+ return 0;
+}
+
+#define SUCCESSFUL 0x00
+#define DEVICE_NOT_FOUND 0x86
+#define BAD_REGISTER_NUMBER 0x87
+
+static int
+int1A_handler(struct regs86 *regs)
+{
+ CARD32 Slot;
+ PciStructPtr pPci;
+
+ if (! CurrentPci) return 0; /* oops */
+
+ i_printf("int 0x1a: ax=0x%lx bx=0x%lx cx=0x%lx dx=0x%lx di=0x%lx"
+ " si=0x%lx\n", regs->eax,regs->ebx,regs->ecx,regs->edx,
+ regs->edi,regs->esi);
+ switch (regs->eax & 0xFFFF) {
+ case 0xb101:
+ regs->eax &= 0xFF00; /* no config space/special cycle support */
+ regs->edx = 0x20494350; /* " ICP" */
+ regs->ebx = 0x0210; /* Version 2.10 */
+ regs->ecx &= 0xFF00;
+ regs->ecx |= (pciMaxBus & 0xFF); /* Max bus number in system */
+ regs->eflags &= ~((unsigned long)0x01); /* clear carry flag */
+ i_printf("ax=0x%lx dx=0x%lx bx=0x%lx cx=0x%lx flags=0x%lx\n",
+ regs->eax,regs->edx,regs->ebx,regs->ecx,regs->eflags);
+ return 1;
+ case 0xb102:
+ if (((regs->edx & 0xFFFF) == CurrentPci->VendorID) &&
+ ((regs->ecx & 0xFFFF) == CurrentPci->DeviceID) &&
+ (regs->esi == 0)) {
+ regs->eax = (regs->eax & 0x00FF) | (SUCCESSFUL << 8);
+ regs->eflags &= ~((unsigned long)0x01); /* clear carry flag */
+ regs->ebx = pciSlotBX(CurrentPci);
+ }
+ else if (Config.ShowAllDev &&
+ (pPci = findPciDevice(regs->edx,regs->ecx,regs->esi)) != NULL) {
+ regs->eax = (regs->eax & 0x00FF) | (SUCCESSFUL << 8);
+ regs->eflags &= ~((unsigned long)0x01); /* clear carry flag */
+ regs->ebx = pciSlotBX(pPci);
+ } else {
+ regs->eax = (regs->eax & 0x00FF) | (DEVICE_NOT_FOUND << 8);
+ regs->eflags |= ((unsigned long)0x01); /* set carry flag */
+ }
+ i_printf("ax=0x%lx bx=0x%lx flags=0x%lx\n",
+ regs->eax,regs->ebx,regs->eflags);
+ return 1;
+ case 0xb103:
+ if (((regs->ecx & 0xFF) == CurrentPci->Interface) &&
+ (((regs->ecx & 0xFF00) >> 8) == CurrentPci->SubClass) &&
+ (((regs->ecx & 0xFFFF0000) >> 16) == CurrentPci->BaseClass) &&
+ ((regs->esi & 0xff) == 0)) {
+ regs->eax = (regs->eax & 0x00FF) | (SUCCESSFUL << 8);
+ regs->ebx = pciSlotBX(CurrentPci);
+ regs->eflags &= ~((unsigned long)0x01); /* clear carry flag */
+ }
+ else if (Config.ShowAllDev
+ && (pPci = findPciClass(regs->ecx & 0xFF, (regs->ecx & 0xff00) >> 8,
+ (regs->ecx & 0xffff0000) >> 16, regs->esi)) != NULL) {
+ regs->eax = (regs->eax & 0x00FF) | (SUCCESSFUL << 8);
+ regs->ebx = pciSlotBX(pPci);
+ regs->eflags &= ~((unsigned long)0x01); /* clear carry flag */
+ } else {
+ regs->eax = (regs->eax & 0x00FF) | (DEVICE_NOT_FOUND << 8);
+ regs->eflags |= ((unsigned long)0x01); /* set carry flag */
+ }
+ i_printf("ax=0x%lx flags=0x%lx\n",regs->eax,regs->eflags);
+ return 1;
+ case 0xb108:
+ i_printf("Slot=0x%x\n",CurrentPci->Slot.l);
+ if ((Slot = findPci(regs->ebx))) {
+ regs->ecx &= 0xFFFFFF00;
+ regs->ecx |= PciRead8(regs->edi,Slot);
+ regs->eax = (regs->eax & 0x00FF) | (SUCCESSFUL << 8);
+ regs->eflags &= ~((unsigned long)0x01); /* clear carry flag */
+ } else {
+ regs->eax = (regs->eax & 0x00FF) | (BAD_REGISTER_NUMBER << 8);
+ regs->eflags |= ((unsigned long)0x01); /* set carry flag */
+ }
+ i_printf("ax=0x%lx cx=0x%lx flags=0x%lx\n",
+ regs->eax,regs->ecx,regs->eflags);
+ return 1;
+ case 0xb109:
+ i_printf("Slot=0x%x\n",CurrentPci->Slot.l);
+ if ((Slot = findPci(regs->ebx))) {
+ regs->ecx &= 0xFFFF0000;
+ regs->ecx |= PciRead16(regs->edi,Slot);
+ regs->eax = (regs->eax & 0x00FF) | (SUCCESSFUL << 8);
+ regs->eflags &= ~((unsigned long)0x01); /* clear carry flag */
+ } else {
+ regs->eax = (regs->eax & 0x00FF) | (BAD_REGISTER_NUMBER << 8);
+ regs->eflags |= ((unsigned long)0x01); /* set carry flag */
+ }
+ i_printf("ax=0x%lx cx=0x%lx flags=0x%lx\n",
+ regs->eax,regs->ecx,regs->eflags);
+ return 1;
+ case 0xb10a:
+ i_printf("Slot=0x%x\n",CurrentPci->Slot.l);
+ if ((Slot = findPci(regs->ebx))) {
+ regs->ecx &= 0;
+ regs->ecx |= PciRead32(regs->edi,Slot);
+ regs->eax = (regs->eax & 0x00FF) | (SUCCESSFUL << 8);
+ regs->eflags &= ~((unsigned long)0x01); /* clear carry flag */
+ } else {
+ regs->eax = (regs->eax & 0x00FF) | (BAD_REGISTER_NUMBER << 8);
+ regs->eflags |= ((unsigned long)0x01); /* set carry flag */
+ }
+ i_printf("ax=0x%lx cx=0x%lx flags=0x%lx\n",
+ regs->eax,regs->ecx,regs->eflags);
+ return 1;
+ case 0xb10b:
+ i_printf("Slot=0x%x\n",CurrentPci->Slot.l);
+ if ((Slot = findPci(regs->ebx))) {
+ PciWrite8(regs->edi,(CARD8)regs->ecx,Slot);
+ regs->eax = (regs->eax & 0x00FF) | (SUCCESSFUL << 8);
+ regs->eflags &= ~((unsigned long)0x01); /* clear carry flag */
+ } else {
+ regs->eax = (regs->eax & 0x00FF) | (BAD_REGISTER_NUMBER << 8);
+ regs->eflags |= ((unsigned long)0x01); /* set carry flag */
+ }
+ i_printf("ax=0x%lx flags=0x%lx\n", regs->eax,regs->eflags);
+ return 1;
+ case 0xb10c:
+ i_printf("Slot=0x%x\n",CurrentPci->Slot.l);
+ if ((Slot = findPci(regs->ebx))) {
+ PciWrite16(regs->edi,(CARD16)regs->ecx,Slot);
+ regs->eax = (regs->eax & 0x00FF) | (SUCCESSFUL << 8);
+ regs->eflags &= ~((unsigned long)0x01); /* clear carry flag */
+ } else {
+ regs->eax = (regs->eax & 0x00FF) | (BAD_REGISTER_NUMBER << 8);
+ regs->eflags |= ((unsigned long)0x01); /* set carry flag */
+ }
+ i_printf("ax=0x%lx flags=0x%lx\n", regs->eax,regs->eflags);
+ return 1;
+ case 0xb10d:
+ i_printf("Slot=0x%x\n",CurrentPci->Slot.l);
+ if ((Slot = findPci(regs->ebx))) {
+ PciWrite32(regs->edi,(CARD32)regs->ecx,Slot);
+ regs->eax = (regs->eax & 0x00FF) | (SUCCESSFUL << 8);
+ regs->eflags &= ~((unsigned long)0x01); /* clear carry flag */
+ } else {
+ regs->eax = (regs->eax & 0x00FF) | (BAD_REGISTER_NUMBER << 8);
+ regs->eflags |= ((unsigned long)0x01); /* set carry flag */
+ }
+ i_printf("ax=0x%lx flags=0x%lx\n", regs->eax,regs->eflags);
+ return 1;
+ default:
+ return 0;
+ }
+}
generated by cgit (git 2.34.1) at 2024-12-19 15:03:56 +0000