Expose agpgart_t (#2655)

src/include/86box/agpgart.h

@@ -0,0 +1,35 @@
+/*
+ * 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.
+ *
+ *          AGP Graphics Address Remapping Table remapping emulation.
+ *
+ *
+ *
+ * Authors: RichardG, <richardg867@gmail.com>
+ *
+ *          Copyright 2021 RichardG.
+ */
+
+#ifndef EMU_AGPGART_H
+#define EMU_AGPGART_H
+
+typedef struct agpgart_s {
+    int		aperture_enable;
+    uint32_t	aperture_base, aperture_size, aperture_mask, gart_base;
+    mem_mapping_t aperture_mapping;
+} agpgart_t;
+
+extern void agpgart_set_aperture(agpgart_t *dev, uint32_t base, uint32_t size, int enable);
+extern void agpgart_set_gart(agpgart_t *dev, uint32_t base);
+
+#ifdef EMU_DEVICE_H
+/* AGP GART */
+extern const device_t agpgart_device;
+#endif
+
+#endif /*EMU_AGPGART_H*/