Merge pull request #658 from richardg867/master

Move the PIIX4 SMBus interface to its own file

src/include/86box/smbus_piix4.h

@@ -0,0 +1,43 @@
+/*
+ * 86Box	A hypervisor and IBM PC system emulator that specializes in
+ *		running old operating systems and software designed for IBM
+ *		PC systems and compatibles from 1981 through fairly recent
+ *		system designs based on the PCI bus.
+ *
+ *		This file is part of the 86Box distribution.
+ *
+  *		Definitions for the generic PIIX4-compatible SMBus host controller.
+ *
+ *
+ *
+ * Authors:	RichardG, <richardg867@gmail.com>
+ *
+ *		Copyright 2020 RichardG.
+ */
+#ifndef EMU_SMBUS_PIIX4_H
+# define EMU_SMBUS_PIIX4_H
+
+
+#define SMBUS_PIIX4_BLOCK_DATA_SIZE	32
+
+
+typedef struct
+{
+    uint16_t	io_base;
+    uint8_t	stat, next_stat, ctl, cmd, addr,
+		data0, data1,
+		index,
+		data[SMBUS_PIIX4_BLOCK_DATA_SIZE];
+    pc_timer_t	response_timer;
+} smbus_piix4_t;
+
+
+extern void	smbus_piix4_remap(smbus_piix4_t *dev, uint16_t new_io_base, uint8_t enable);
+
+
+#ifdef EMU_DEVICE_H
+extern const device_t piix4_smbus_device;
+#endif
+
+
+#endif	/*EMU_SMBUS_PIIX4_H*/