diff --git a/include/video/gbe.h b/include/video/gbe.h
new file mode 100644
index 0000000..ad51028
--- /dev/null
+++ b/include/video/gbe.h
@@ -0,0 +1,317 @@
+/*
+ * include/video/gbe.h -- SGI GBE (Graphics Back End)
+ *
+ * Copyright (C) 1999 Silicon Graphics, Inc. (Jeffrey Newquist)
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License version 2 as published by the Free Software Foundation.
+ */
+
+#ifndef __GBE_H__
+#define __GBE_H__
+
+struct sgi_gbe {
+	volatile uint32_t ctrlstat;	/* general control */
+	volatile uint32_t dotclock;	/* dot clock PLL control */
+	volatile uint32_t i2c;		/* crt I2C control */
+	volatile uint32_t sysclk;	/* system clock PLL control */
+	volatile uint32_t i2cfp;	/* flat panel I2C control */
+	volatile uint32_t id;		/* device id/chip revision */
+	volatile uint32_t config;       /* power on configuration [1] */
+	volatile uint32_t bist;         /* internal bist status [1] */
+	uint32_t _pad0[0x010000/4 - 8];
+	volatile uint32_t vt_xy;	/* current dot coords */
+	volatile uint32_t vt_xymax;	/* maximum dot coords */
+	volatile uint32_t vt_vsync;	/* vsync on/off */
+	volatile uint32_t vt_hsync;	/* hsync on/off */
+	volatile uint32_t vt_vblank;	/* vblank on/off */
+	volatile uint32_t vt_hblank;	/* hblank on/off */
+	volatile uint32_t vt_flags;	/* polarity of vt signals */
+	volatile uint32_t vt_f2rf_lock;	/* f2rf & framelck y coord */
+	volatile uint32_t vt_intr01;	/* intr 0,1 y coords */
+	volatile uint32_t vt_intr23;	/* intr 2,3 y coords */
+	volatile uint32_t fp_hdrv;	/* flat panel hdrv on/off */
+	volatile uint32_t fp_vdrv;	/* flat panel vdrv on/off */
+	volatile uint32_t fp_de;	/* flat panel de on/off */
+	volatile uint32_t vt_hpixen;	/* intrnl horiz pixel on/off */
+	volatile uint32_t vt_vpixen;	/* intrnl vert pixel on/off */
+	volatile uint32_t vt_hcmap;	/* cmap write (horiz) */
+	volatile uint32_t vt_vcmap;	/* cmap write (vert) */
+	volatile uint32_t did_start_xy;	/* eol/f did/xy reset val */
+	volatile uint32_t crs_start_xy;	/* eol/f crs/xy reset val */
+	volatile uint32_t vc_start_xy;	/* eol/f vc/xy reset val */
+	uint32_t _pad1[0xffb0/4];
+	volatile uint32_t ovr_width_tile;/*overlay plane ctrl 0 */
+	volatile uint32_t ovr_inhwctrl;	/* overlay plane ctrl 1 */
+	volatile uint32_t ovr_control;	/* overlay plane ctrl 1 */
+	uint32_t _pad2[0xfff4/4];
+	volatile uint32_t frm_size_tile;/* normal plane ctrl 0 */
+	volatile uint32_t frm_size_pixel;/*normal plane ctrl 1 */
+	volatile uint32_t frm_inhwctrl;	/* normal plane ctrl 2 */
+	volatile uint32_t frm_control;	/* normal plane ctrl 3 */
+	uint32_t _pad3[0xfff0/4];
+	volatile uint32_t did_inhwctrl;	/* DID control */
+	volatile uint32_t did_control;	/* DID shadow */
+	uint32_t _pad4[0x7ff8/4];
+	volatile uint32_t mode_regs[32];/* WID table */
+	uint32_t _pad5[0x7f80/4];
+	volatile uint32_t cmap[6144];	/* color map */
+	uint32_t _pad6[0x2000/4];
+	volatile uint32_t cm_fifo;	/* color map fifo status */
+	uint32_t _pad7[0x7ffc/4];
+	volatile uint32_t gmap[256];	/* gamma map */
+	uint32_t _pad8[0x7c00/4];
+	volatile uint32_t gmap10[1024];	/* gamma map */
+	uint32_t _pad9[0x7000/4];
+	volatile uint32_t crs_pos;	/* cusror control 0 */
+	volatile uint32_t crs_ctl;	/* cusror control 1 */
+	volatile uint32_t crs_cmap[3];	/* crs cmap */
+	uint32_t _pad10[0x7fec/4];
+	volatile uint32_t crs_glyph[64];/* crs glyph */
+	uint32_t _pad11[0x7f00/4];
+	volatile uint32_t vc_0;	/* video capture crtl 0 */
+	volatile uint32_t vc_1;	/* video capture crtl 1 */
+	volatile uint32_t vc_2;	/* video capture crtl 2 */
+	volatile uint32_t vc_3;	/* video capture crtl 3 */
+	volatile uint32_t vc_4;	/* video capture crtl 4 */
+	volatile uint32_t vc_5;	/* video capture crtl 5 */
+	volatile uint32_t vc_6;	/* video capture crtl 6 */
+	volatile uint32_t vc_7;	/* video capture crtl 7 */
+	volatile uint32_t vc_8;	/* video capture crtl 8 */
+};
+
+#define MASK(msb, lsb)		\
+	( (((u32)1<<((msb)-(lsb)+1))-1) << (lsb) )
+#define GET(v, msb, lsb)	\
+	( ((u32)(v) & MASK(msb,lsb)) >> (lsb) )
+#define SET(v, f, msb, lsb)	\
+	( (v) = ((v)&~MASK(msb,lsb)) | (( (u32)(f)<<(lsb) ) & MASK(msb,lsb)) )
+
+#define GET_GBE_FIELD(reg, field, v)		\
+	GET((v), GBE_##reg##_##field##_MSB, GBE_##reg##_##field##_LSB)
+#define SET_GBE_FIELD(reg, field, v, f)		\
+	SET((v), (f), GBE_##reg##_##field##_MSB, GBE_##reg##_##field##_LSB)
+
+/*
+ * Bit mask information
+ */
+#define GBE_CTRLSTAT_CHIPID_MSB		 3
+#define GBE_CTRLSTAT_CHIPID_LSB		 0
+#define GBE_CTRLSTAT_SENSE_N_MSB	 4
+#define GBE_CTRLSTAT_SENSE_N_LSB	 4
+#define GBE_CTRLSTAT_PCLKSEL_MSB	29
+#define GBE_CTRLSTAT_PCLKSEL_LSB	28
+
+#define GBE_DOTCLK_M_MSB		 7
+#define GBE_DOTCLK_M_LSB		 0
+#define GBE_DOTCLK_N_MSB		13
+#define GBE_DOTCLK_N_LSB		 8
+#define GBE_DOTCLK_P_MSB		15
+#define GBE_DOTCLK_P_LSB		14
+#define GBE_DOTCLK_RUN_MSB		20
+#define GBE_DOTCLK_RUN_LSB		20
+
+#define GBE_VT_XY_Y_MSB		23
+#define GBE_VT_XY_Y_LSB		12
+#define GBE_VT_XY_X_MSB		11
+#define GBE_VT_XY_X_LSB		 0
+#define GBE_VT_XY_FREEZE_MSB		31
+#define GBE_VT_XY_FREEZE_LSB		31
+
+#define GBE_FP_VDRV_ON_MSB	23
+#define GBE_FP_VDRV_ON_LSB	12
+#define GBE_FP_VDRV_OFF_MSB	11
+#define GBE_FP_VDRV_OFF_LSB	0
+
+#define GBE_FP_HDRV_ON_MSB	23
+#define GBE_FP_HDRV_ON_LSB	12
+#define GBE_FP_HDRV_OFF_MSB	11
+#define GBE_FP_HDRV_OFF_LSB	0
+
+#define GBE_FP_DE_ON_MSB		23
+#define GBE_FP_DE_ON_LSB		12
+#define GBE_FP_DE_OFF_MSB		11
+#define GBE_FP_DE_OFF_LSB		0
+
+#define GBE_VT_VSYNC_VSYNC_ON_MSB	23
+#define GBE_VT_VSYNC_VSYNC_ON_LSB	12
+#define GBE_VT_VSYNC_VSYNC_OFF_MSB	11
+#define GBE_VT_VSYNC_VSYNC_OFF_LSB	 0
+
+#define GBE_VT_HSYNC_HSYNC_ON_MSB	23
+#define GBE_VT_HSYNC_HSYNC_ON_LSB	12
+#define GBE_VT_HSYNC_HSYNC_OFF_MSB	11
+#define GBE_VT_HSYNC_HSYNC_OFF_LSB	 0
+
+#define GBE_VT_VBLANK_VBLANK_ON_MSB	23
+#define GBE_VT_VBLANK_VBLANK_ON_LSB	12
+#define GBE_VT_VBLANK_VBLANK_OFF_MSB	11
+#define GBE_VT_VBLANK_VBLANK_OFF_LSB	 0
+
+#define GBE_VT_HBLANK_HBLANK_ON_MSB	23
+#define GBE_VT_HBLANK_HBLANK_ON_LSB	12
+#define GBE_VT_HBLANK_HBLANK_OFF_MSB	11
+#define GBE_VT_HBLANK_HBLANK_OFF_LSB	 0
+
+#define GBE_VT_FLAGS_F2RF_HIGH_MSB	 6
+#define GBE_VT_FLAGS_F2RF_HIGH_LSB	 6
+#define GBE_VT_FLAGS_SYNC_LOW_MSB	 5
+#define GBE_VT_FLAGS_SYNC_LOW_LSB	 5
+#define GBE_VT_FLAGS_SYNC_HIGH_MSB	 4
+#define GBE_VT_FLAGS_SYNC_HIGH_LSB	 4
+#define GBE_VT_FLAGS_HDRV_LOW_MSB	 3
+#define GBE_VT_FLAGS_HDRV_LOW_LSB	 3
+#define GBE_VT_FLAGS_HDRV_INVERT_MSB	 2
+#define GBE_VT_FLAGS_HDRV_INVERT_LSB	 2
+#define GBE_VT_FLAGS_VDRV_LOW_MSB	 1
+#define GBE_VT_FLAGS_VDRV_LOW_LSB	 1
+#define GBE_VT_FLAGS_VDRV_INVERT_MSB	 0
+#define GBE_VT_FLAGS_VDRV_INVERT_LSB	 0
+
+#define GBE_VT_VCMAP_VCMAP_ON_MSB	23
+#define GBE_VT_VCMAP_VCMAP_ON_LSB	12
+#define GBE_VT_VCMAP_VCMAP_OFF_MSB	11
+#define GBE_VT_VCMAP_VCMAP_OFF_LSB	 0
+
+#define GBE_VT_HCMAP_HCMAP_ON_MSB	23
+#define GBE_VT_HCMAP_HCMAP_ON_LSB	12
+#define GBE_VT_HCMAP_HCMAP_OFF_MSB	11
+#define GBE_VT_HCMAP_HCMAP_OFF_LSB	 0
+
+#define GBE_VT_XYMAX_MAXX_MSB	11
+#define GBE_VT_XYMAX_MAXX_LSB	 0
+#define GBE_VT_XYMAX_MAXY_MSB	23
+#define GBE_VT_XYMAX_MAXY_LSB	12
+
+#define GBE_VT_HPIXEN_HPIXEN_ON_MSB	23
+#define GBE_VT_HPIXEN_HPIXEN_ON_LSB	12
+#define GBE_VT_HPIXEN_HPIXEN_OFF_MSB	11
+#define GBE_VT_HPIXEN_HPIXEN_OFF_LSB	 0
+
+#define GBE_VT_VPIXEN_VPIXEN_ON_MSB	23
+#define GBE_VT_VPIXEN_VPIXEN_ON_LSB	12
+#define GBE_VT_VPIXEN_VPIXEN_OFF_MSB	11
+#define GBE_VT_VPIXEN_VPIXEN_OFF_LSB	 0
+
+#define GBE_OVR_CONTROL_OVR_DMA_ENABLE_MSB	 0
+#define GBE_OVR_CONTROL_OVR_DMA_ENABLE_LSB	 0
+
+#define GBE_OVR_INHWCTRL_OVR_DMA_ENABLE_MSB	 0
+#define GBE_OVR_INHWCTRL_OVR_DMA_ENABLE_LSB	 0
+
+#define GBE_OVR_WIDTH_TILE_OVR_FIFO_RESET_MSB	13
+#define GBE_OVR_WIDTH_TILE_OVR_FIFO_RESET_LSB	13
+
+#define GBE_FRM_CONTROL_FRM_DMA_ENABLE_MSB	 0
+#define GBE_FRM_CONTROL_FRM_DMA_ENABLE_LSB	 0
+#define GBE_FRM_CONTROL_FRM_TILE_PTR_MSB	31
+#define GBE_FRM_CONTROL_FRM_TILE_PTR_LSB	 9
+#define GBE_FRM_CONTROL_FRM_LINEAR_MSB		 1
+#define GBE_FRM_CONTROL_FRM_LINEAR_LSB		 1
+
+#define GBE_FRM_INHWCTRL_FRM_DMA_ENABLE_MSB	 0
+#define GBE_FRM_INHWCTRL_FRM_DMA_ENABLE_LSB	 0
+
+#define GBE_FRM_SIZE_TILE_FRM_WIDTH_TILE_MSB	12
+#define GBE_FRM_SIZE_TILE_FRM_WIDTH_TILE_LSB	 5
+#define GBE_FRM_SIZE_TILE_FRM_RHS_MSB		 4
+#define GBE_FRM_SIZE_TILE_FRM_RHS_LSB		 0
+#define GBE_FRM_SIZE_TILE_FRM_DEPTH_MSB		14
+#define GBE_FRM_SIZE_TILE_FRM_DEPTH_LSB		13
+#define GBE_FRM_SIZE_TILE_FRM_FIFO_RESET_MSB	15
+#define GBE_FRM_SIZE_TILE_FRM_FIFO_RESET_LSB	15
+
+#define GBE_FRM_SIZE_PIXEL_FB_HEIGHT_PIX_MSB	31
+#define GBE_FRM_SIZE_PIXEL_FB_HEIGHT_PIX_LSB	16
+
+#define GBE_DID_CONTROL_DID_DMA_ENABLE_MSB	 0
+#define GBE_DID_CONTROL_DID_DMA_ENABLE_LSB	 0
+#define GBE_DID_INHWCTRL_DID_DMA_ENABLE_MSB	 0
+#define GBE_DID_INHWCTRL_DID_DMA_ENABLE_LSB	 0
+
+#define GBE_DID_START_XY_DID_STARTY_MSB		23
+#define GBE_DID_START_XY_DID_STARTY_LSB		12
+#define GBE_DID_START_XY_DID_STARTX_MSB		11
+#define GBE_DID_START_XY_DID_STARTX_LSB		 0
+
+#define GBE_CRS_START_XY_CRS_STARTY_MSB		23
+#define GBE_CRS_START_XY_CRS_STARTY_LSB		12
+#define GBE_CRS_START_XY_CRS_STARTX_MSB		11
+#define GBE_CRS_START_XY_CRS_STARTX_LSB		 0
+
+#define GBE_WID_AUX_MSB		12
+#define GBE_WID_AUX_LSB		11
+#define GBE_WID_GAMMA_MSB	10
+#define GBE_WID_GAMMA_LSB	10
+#define GBE_WID_CM_MSB		 9
+#define GBE_WID_CM_LSB		 5
+#define GBE_WID_TYP_MSB		 4
+#define GBE_WID_TYP_LSB		 2
+#define GBE_WID_BUF_MSB		 1
+#define GBE_WID_BUF_LSB		 0
+
+#define GBE_VC_START_XY_VC_STARTY_MSB	23
+#define GBE_VC_START_XY_VC_STARTY_LSB	12
+#define GBE_VC_START_XY_VC_STARTX_MSB	11
+#define GBE_VC_START_XY_VC_STARTX_LSB	 0
+
+/* Constants */
+
+#define GBE_FRM_DEPTH_8		0
+#define GBE_FRM_DEPTH_16	1
+#define GBE_FRM_DEPTH_32	2
+
+#define GBE_CMODE_I8		0
+#define GBE_CMODE_I12		1
+#define GBE_CMODE_RG3B2		2
+#define GBE_CMODE_RGB4		3
+#define GBE_CMODE_ARGB5		4
+#define GBE_CMODE_RGB8		5
+#define GBE_CMODE_RGBA5		6
+#define GBE_CMODE_RGB10		7
+
+#define GBE_BMODE_BOTH		3
+
+#define GBE_CRS_MAGIC		54
+#define GBE_PIXEN_MAGIC_ON	19
+#define GBE_PIXEN_MAGIC_OFF	 2
+
+#define GBE_TLB_SIZE		128
+
+/* [1] - only GBE revision 2 and later */
+
+/*
+ * Video Timing Data Structure
+ */
+
+struct gbe_timing_info {
+	int flags;
+	short width;		/* Monitor resolution */
+	short height;
+	int fields_sec;		/* fields/sec  (Hz -3 dec. places */
+	int cfreq;		/* pixel clock frequency (MHz -3 dec. places) */
+	short htotal;		/* Horizontal total pixels */
+	short hblank_start;	/* Horizontal blank start */
+	short hblank_end;	/* Horizontal blank end */
+	short hsync_start;	/* Horizontal sync start */
+	short hsync_end;	/* Horizontal sync end */
+	short vtotal;		/* Vertical total lines */
+	short vblank_start;	/* Vertical blank start */
+	short vblank_end;	/* Vertical blank end */
+	short vsync_start;	/* Vertical sync start */
+	short vsync_end;	/* Vertical sync end */
+	short pll_m;		/* PLL M parameter */
+	short pll_n;		/* PLL P parameter */
+	short pll_p;		/* PLL N parameter */
+};
+
+/* Defines for gbe_vof_info_t flags */
+
+#define GBE_VOF_UNKNOWNMON	1
+#define GBE_VOF_STEREO		2
+#define GBE_VOF_DO_GENSYNC	4	/* enable incoming sync */
+#define GBE_VOF_SYNC_ON_GREEN	8	/* sync on green */
+#define GBE_VOF_FLATPANEL	0x1000	/* FLATPANEL Timing */
+#define GBE_VOF_MAGICKEY	0x2000	/* Backdoor key */
+
+#endif		/* ! __GBE_H__ */