1 files changed, 267 insertions, 0 deletions
diff --git a/util/vgabios/helper_exec.c b/util/vgabios/helper_exec.c
new file mode 100644
index 0000000000..ee03f4eca3
--- /dev/null
+++ b/util/vgabios/helper_exec.c
@@ -0,0 +1,267 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/int10/helper_exec.c,v 1.16 2001/04/30 14:34:57 tsi Exp $ */
+/*
+ *                   XFree86 int10 module
+ *   execute BIOS int 10h calls in x86 real mode environment
+ *                 Copyright 1999 Egbert Eich
+ *
+ *   Part of this is based on code taken from DOSEMU
+ *   (C) Copyright 1992, ..., 1999 the "DOSEMU-Development-Team"
+ */
+
+/*
+ * To debug port accesses define PRINT_PORT.
+ * Note! You also have to comment out ioperm()
+ * in xf86EnableIO(). Otherwise we won't trap
+ * on PIO.
+ */
+#include <x86emu.h>
+#include "test.h"
+#include <asm/io.h>
+#include <sys/time.h>
+
+int port_rep_inb(u16 port, u32 base, int d_f, u32 count);
+u8 x_inb(u16 port);
+u16 x_inw(u16 port);
+void x_outb(u16 port, u8 val);
+void x_outw(u16 port, u16 val);
+u32 x_inl(u16 port);
+void x_outl(u16 port, u32 val);
+
+/* general software interrupt handler */
+u32 getIntVect(int num)
+{
+	return MEM_RW(num << 2) + (MEM_RW((num << 2) + 2) << 4);
+}
+
+void pushw(u16 val)
+{
+	X86_ESP -= 2;
+	MEM_WW(((u32) X86_SS << 4) + X86_SP, val);
+}
+
+int run_bios_int(int num)
+{
+	u32 eflags;
+
+	eflags = X86_EFLAGS;
+	pushw(eflags);
+	pushw(X86_CS);
+	pushw(X86_IP);
+	X86_CS = MEM_RW((num << 2) + 2);
+	X86_IP = MEM_RW(num << 2);
+
+	//printf("%s: INT %x CS:IP = %x:%x\n", __FUNCTION__,
+	//       num, MEM_RW((num << 2) + 2), MEM_RW(num << 2));
+
+	return 1;
+}
+
+int port_rep_inb(u16 port, u32 base, int d_f, u32 count)
+{
+	register int inc = d_f ? -1 : 1;
+	u32 dst = base;
+	while (count--) {
+		MEM_WB(dst, x_inb(port));
+		dst += inc;
+	}
+	return dst - base;
+}
+
+int port_rep_inw(u16 port, u32 base, int d_f, u32 count)
+{
+	register int inc = d_f ? -2 : 2;
+	u32 dst = base;
+	while (count--) {
+		MEM_WW(dst, x_inw(port));
+		dst += inc;
+	}
+	return dst - base;
+}
+
+int port_rep_inl(u16 port, u32 base, int d_f, u32 count)
+{
+	register int inc = d_f ? -4 : 4;
+	u32 dst = base;
+	while (count--) {
+		MEM_WL(dst, x_inl(port));
+		dst += inc;
+	}
+	return dst - base;
+}
+
+int port_rep_outb(u16 port, u32 base, int d_f, u32 count)
+{
+	register int inc = d_f ? -1 : 1;
+	u32 dst = base;
+	while (count--) {
+		x_outb(port, MEM_RB(dst));
+		dst += inc;
+	}
+	return dst - base;
+}
+
+int port_rep_outw(u16 port, u32 base, int d_f, u32 count)
+{
+	register int inc = d_f ? -2 : 2;
+	u32 dst = base;
+	while (count--) {
+		x_outw(port, MEM_RW(dst));
+		dst += inc;
+	}
+	return dst - base;
+}
+
+int port_rep_outl(u16 port, u32 base, int d_f, u32 count)
+{
+	register int inc = d_f ? -4 : 4;
+	u32 dst = base;
+	while (count--) {
+		x_outl(port, MEM_RL(dst));
+		dst += inc;
+	}
+	return dst - base;
+}
+
+u8 x_inb(u16 port)
+{
+	u8 val;
+
+	val = inb(port);
+
+	//printf("inb(0x%04x) = 0x%02x\n", port, val);
+
+	return val;
+}
+
+u16 x_inw(u16 port)
+{
+	u16 val;
+
+	val = inw(port);
+
+	//printf("inw(0x%04x) = 0x%04x\n", port, val);
+	return val;
+}
+
+u32 x_inl(u16 port)
+{
+	u32 val;
+
+	val = inl(port);
+
+	//printf("inl(0x%04x) = 0x%08x\n", port, val);
+	return val;
+}
+
+void x_outb(u16 port, u8 val)
+{
+	//printf("outb(0x%02x, 0x%04x)\n", val, port);
+	outb(val, port);
+}
+
+void x_outw(u16 port, u16 val)
+{
+	//printf("outw(0x%04x, 0x%04x)\n", val, port);
+	outw(val, port);
+}
+
+void x_outl(u16 port, u32 val)
+{
+	//printf("outl(0x%08x, 0x%04x)\n", val, port);
+	outl(val, port);
+}
+
+u8 Mem_rb(int addr)
+{
+	return (*current->mem->rb) (current, addr);
+}
+
+u16 Mem_rw(int addr)
+{
+	return (*current->mem->rw) (current, addr);
+}
+
+u32 Mem_rl(int addr)
+{
+	return (*current->mem->rl) (current, addr);
+}
+
+void Mem_wb(int addr, u8 val)
+{
+	(*current->mem->wb) (current, addr, val);
+}
+
+void Mem_ww(int addr, u16 val)
+{
+	(*current->mem->ww) (current, addr, val);
+}
+
+void Mem_wl(int addr, u32 val)
+{
+	(*current->mem->wl) (current, addr, val);
+}
+
+void getsecs(unsigned long *sec, unsigned long *usec)
+{
+	struct timeval tv;
+	gettimeofday(&tv, 0);
+	*sec = tv.tv_sec;
+	*usec = tv.tv_usec;
+}
+
+#define TAG(Cfg1Addr) (Cfg1Addr & 0xffff00)
+#define OFFSET(Cfg1Addr) (Cfg1Addr & 0xff)
+
+u8 bios_checksum(u8 * start, int size)
+{
+	u8 sum = 0;
+
+	while (size-- > 0)
+		sum += *start++;
+	return sum;
+}
+
+/*
+ * Lock/Unlock legacy VGA. Some Bioses try to be very clever and make
+ * an attempt to detect a legacy ISA card. If they find one they might
+ * act very strange: for example they might configure the card as a
+ * monochrome card. This might cause some drivers to choke.
+ * To avoid this we attempt legacy VGA by writing to all know VGA
+ * disable registers before we call the BIOS initialization and
+ * restore the original values afterwards. In beween we hold our
+ * breath. To get to a (possibly exising) ISA card need to disable
+ * our current PCI card.
+ */
+/*
+ * This is just for booting: we just want to catch pure
+ * legacy vga therefore we don't worry about mmio etc.
+ * This stuff should really go into vgaHW.c. However then
+ * the driver would have to load the vga-module prior to
+ * doing int10.
+ */
+/*void
+LockLegacyVGA(int screenIndex,legacyVGAPtr vga)
+{
+    xf86SetCurrentAccess(FALSE, xf86Screens[screenIndex]);
+    vga->save_msr = inb(0x3CC);
+    vga->save_vse = inb(0x3C3);
+    vga->save_46e8 = inb(0x46e8);
+    vga->save_pos102 = inb(0x102);
+    outb(0x3C2, ~(u8)0x03 & vga->save_msr);
+    outb(0x3C3, ~(u8)0x01 & vga->save_vse);
+    outb(0x46e8, ~(u8)0x08 & vga->save_46e8);
+    outb(0x102, ~(u8)0x01 & vga->save_pos102);
+    xf86SetCurrentAccess(TRUE, xf86Screens[screenIndex]);
+}
+
+void
+UnlockLegacyVGA(int screenIndex, legacyVGAPtr vga)
+{
+    xf86SetCurrentAccess(FALSE, xf86Screens[screenIndex]);
+    outb(0x102, vga->save_pos102);
+    outb(0x46e8, vga->save_46e8);
+    outb(0x3C3, vga->save_vse);
+    outb(0x3C2, vga->save_msr);
+    xf86SetCurrentAccess(TRUE, xf86Screens[screenIndex]);
+}
+*/