/* $NetBSD: crmfbreg.h,v 1.16 2015/01/20 12:13:04 macallan Exp $ */

/*-
 * Copyright (c) 2007 Jared D. McNeill <jmcneill@invisible.ca>
 *               2008 Michael Lorenz <macallan@netbsd.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * SGI-CRM (O2) Framebuffer driver, register definitions
 */

#ifndef CRMFBREG_H
#define CRMFBREG_H

#define	CRMFB_CTRLSTAT		0x00000000
#define		CRMFB_CTRLSTAT_CHIPID_MASK	0x0000000f
#define		CRMFB_CTRLSTAT_SENSE		0x00000010 /* monitor sense pin */
#define		CRMFB_CTRLSTAT_GPIO0_SENSE	0x00000040
#define		CRMFB_CTRLSTAT_GPIO0_INPUT	0x00000080
#define		CRMFB_CTRLSTAT_GPIO1_SENSE	0x00000100
#define		CRMFB_CTRLSTAT_GPIO1_INPUT	0x00000200
#define		CRMFB_CTRLSTAT_GPIO2_SENSE	0x00000400
#define		CRMFB_CTRLSTAT_GPIO2_INPUT	0x00000800
#define		CRMFB_CTRLSTAT_GPIO3_SENSE	0x00001000
#define		CRMFB_CTRLSTAT_GPIO3_INPUT	0x00002000
#define		CRMFB_CTRLSTAT_GPIO4_SENSE	0x00004000
#define		CRMFB_CTRLSTAT_GPIO4_INPUT	0x00008000
#define		CRMFB_CTRLSTAT_GPIO5_SENSE	0x00010000
#define		CRMFB_CTRLSTAT_GPIO5_INPUT	0x00020000
#define		CRMFB_CTRLSTAT_GPIO6_SENSE	0x00040000
#define		CRMFB_CTRLSTAT_GPIO6_INPUT	0x00080000
#define		CRMFB_CTRLSTAT_GPIO7_SENSE	0x00100000
#define		CRMFB_CTRLSTAT_GPIO7_INPUT	0x00200000
#define		CRMFB_CTRLSTAT_GPIO8_SENSE	0x00400000
#define		CRMFB_CTRLSTAT_GPIO8_INPUT	0x00800000
#define		CRMFB_CTRLSTAT_GPIO9_SENSE	0x01000000
#define		CRMFB_CTRLSTAT_GPIO9_INPUT	0x02000000
#define		CRMFB_CTRLSTAT_HALF_PHASE	0x04000000 /* for flat panel */
#define		CRMFB_CTRLSTAT_CSYNC_ALOW	0x08000000 /* csync active low */
#define		CRMFB_CTRLSTAT_EXTERNAL_PCLK	0x00000000
#define		CRMFB_CTRLSTAT_DIFF_PCLK	0x10000000 /* differential pclock */
#define		CRMFB_CTRLSTAT_INTERNAL_PCLK	0x30000000

#define CRMFB_DOTCLOCK		0x00000004
#define		CRMFB_DOTCLOCK_M_MASK		0x000000ff
#define		CRMFB_DOTCLOCK_N_MASK		0x00003f00
#define		CRMFB_DOTCLOCK_P_MASK		0x0000c000
#define		CRMFB_DOTCLOCK_CLKRUN_SHIFT	20
#define		CRMFB_DOTCLOCK_BYPASS		0x00100000 /* turn the clock off */
#define		CRMFB_DOTCLOCK_OUT_OF_RANGE	0x00400000
#define		CRMFB_DOTCLOCK_OUT_OF_LOCK	0x00800000
#define		CRMFB_DOTCLOCK_TDWNI		0x01000000 /* ? */
#define		CRMFB_DOTCLOCK_TUPI		0x02000000 /* ? */

#define CRMFB_I2C_VGA		0x00000008
#define 	CRMFB_I2C_SDA			0x00000001 /* these bits are */
#define 	CRMFB_I2C_SCL			0x00000002 /* low active */

#define CRMFB_SYSCLK		0x0000000c

#define CRMFB_I2C_FP		0x00000010 /* same bits as CRMFB_I2C_VGA */

#define CRMFB_DEVICE_ID		0x00000014
#define		CRMFB_DEVICE_ID_DEF		0x00000666 /* this chip is EVIL */


#define CRMFB_VT_XY		0x00010000 /* pixel / line counters */
#define		CRMFB_VT_XY_X_MASK		0x00000fff
#define		CRMFB_VT_XY_Y_MASK		0x00fff000
#define		CRMFB_VT_XY_FREEZE_SHIFT	31
#define CRMFB_VT_XYMAX		0x00010004 /* same masks as CRMFB_VT_XY, counters in
					    * CRMFB_VT_XY reset when reaching max */
#define CRMFB_VT_VSYNC		0x00010008
#define		CRMFB_VT_VSYNC_OFF_MASK		0x00000fff
#define		CRMFB_VT_VSYNC_ON_MASK		0x00fff000
#define CRMFB_VT_HSYNC		0x0001000c
#define		CRMFB_VT_HSYNC_OFF_MASK		0x00000fff
#define		CRMFB_VT_HSYNC_ON_MASK		0x00fff000
#define CRMFB_VT_VBLANK		0x00010010
#define		CRMFB_VT_VBLANK_OFF_MASK	0x00000fff
#define		CRMFB_VT_VBLANK_ON_MASK		0x00fff000
#define CRMFB_VT_HBLANK		0x00010014
#define		CRMFB_VT_HBLANK_OFF_MASK	0x00000fff
#define		CRMFB_VT_HBLANK_ON_MASK		0x00fff000

#define	CRMFB_VT_FLAGS		0x00010018
#define 	CRMFB_VT_FLAGS_VDRV_INVERT	0x00000001
#define 	CRMFB_VT_FLAGS_VDRV_LOW		0x00000002
#define 	CRMFB_VT_FLAGS_HDRV_INVERT	0x00000004
#define 	CRMFB_VT_FLAGS_HDRV_LOW		0x00000008 /* put monitor to sleep */
#define 	CRMFB_VT_FLAGS_SYNC_HIGH	0x00000010
#define 	CRMFB_VT_FLAGS_SYNC_LOW		0x00000020
#define		CRMFB_VT_FLAGS_SYNC_LOW_MSB	5
#define		CRMFB_VT_FLAGS_SYNC_LOW_LSB	5
#define 	CRMFB_VT_FLAGS_F2RF_HIGH	0x00000040 /* sync left/right ? */

#define CRMFB_VT_FRAMELOCK	0x0001001c
#define		CRMFB_VT_FRAMELOCK_F2RF_MASK	0x00000fff /* f2rf toggles when y
							    * reaches this */
#define		CRMFB_VT_FRAMELOCK_LOCK_MASK	0x00fff000

/* scanline interrupts! */
#define CRMFB_VT_INTR01		0x00010020
#define		CRMFB_INTR_1_MASK		0x00000fff /* intr1 when y == this */
#define		CRMFB_INTR_0_MASK		0x00fff000 /* intr0 when y == this */
#define CRMFB_VT_INTR23		0x00010024
#define		CRMFB_INTR_3_MASK		0x00000fff /* intr3 when y == this */
#define		CRMFB_INTR_2_MASK		0x00fff000 /* intr2 when y == this */

#define CRMFB_VT_HPIX_EN		0x00010034
#define		CRMFB_HPIXEN_OFF_MASK		0x00000fff
#define		CRMFB_HPIXEN_ON_MASK		0x00fff000
#define CRMFB_VT_VPIX_EN	0x00010038
#define		CRMFB_VT_VPIX_EN_OFF_SHIFT	0
#define		CRMFB_VPIXEN_OFF_MASK		0x00000fff
#define		CRMFB_VPIXEN_ON_MASK		0x00fff000
#define CRMFB_VT_HCMAP		0x0001003c
#define		CRMFB_HCMAP_OFF_MASK		0x00000fff
#define		CRMFB_HCMAP_ON_MASK		0x00fff000
#define		CRMFB_VT_HCMAP_ON_SHIFT		12
#define CRMFB_VT_VCMAP		0x00010040
#define		CRMFB_VCMAP_OFF_MASK		0x00000fff
#define		CRMFB_VCMAP_ON_MASK		0x00fff000
#define		CRMFB_VT_VCMAP_ON_SHIFT		12

#define CRMFB_VT_DID_STARTXY	0x00010044
#define		CRMFB_VT_DID_START_X_MASK	0x00000fff
#define		CRMFB_VT_DID_START_Y_MASK	0x00fff000
#define CRMFB_VT_CRS_STARTXY	0x00010048
#define		CRMFB_VT_CRS_START_X_MASK	0x00000fff
#define		CRMFB_VT_CRS_START_Y_MASK	0x00fff000
#define CRMFB_VT_VC_STARTXY	0x0001004c
#define		CRMFB_VT_VC_START_X_MASK	0x00000fff
#define		CRMFB_VT_VC_START_Y_MASK	0x00fff000

#define CRMFB_OVR_WIDTH_TILE	0x00020000
#define		CRMFB_OVR_WIDTH_TILE_RHS_MASK	0x0000001f /* width of rightmost tile
							    * in 32 byte units */
#define		CRMFB_OVR_WIDTH_TILES_MASK	0x00001fe0 /* width in whole tiles */
#define CRMFB_OVR_TILE_PTR	0x00020004
#define		CRMFB_OVR_TILE_LIST_MASK	0xfffff000
#define 	CRMFB_OVR_DMA_ENABLE		0x00000001
#define CRMFB_OVR_CONTROL	0x00020008 /* same bits as CRMFB_OVR_TILE_PTR, copied 
					    * from here when blanking */
#define		CRMFB_OVR_CONTROL_DMAEN_SHIFT	0

#define CRMFB_FRM_TILESIZE	0x00030000
#define		CRMFB_FRM_TILESIZE_RHS_SHIFT	0 /* width of a partial tile
						   * on the right in 32 BYTES */
#define		CRMFB_FRM_TILESIZE_WIDTH_SHIFT	5 /* width in tiles */
#define		CRMFB_FRM_TILESIZE_DEPTH_SHIFT	13
#define			CRMFB_FRM_TILESIZE_DEPTH_8	0
#define			CRMFB_FRM_TILESIZE_DEPTH_16	1
#define			CRMFB_FRM_TILESIZE_DEPTH_32	2
#define		CRMFB_FRM_TILESIZE_FIFOR_SHIFT	15
#define CRMFB_FRM_PIXSIZE	0x00030004
#define		CRMFB_FRM_PIXSIZE_HEIGHT_SHIFT	16
#define CRMFB_TILE_PTR		0x00020008
#define		CRMFB_TILE_LIST_MASK		0xfffff000
#define 	CRMFB_DMA_ENABLE		0x00000001
#define CRMFB_FRM_CONTROL	0x0003000c
#define		CRMFB_FRM_CONTROL_DMAEN_SHIFT	0
#define		CRMFB_FRM_CONTROL_LINEAR_SHIFT	1
#define		CRMFB_FRM_CONTROL_TILEPTR_SHIFT	9

#define CRMFB_DID_PTR		0x00040000
#define		CRMFB_DID_BASE_MASK		0x0000ffff
#define 	CRMFB_DID_DMA_ENABLE		0x00010000
#define CRMFB_DID_CONTROL	0x00040004
#define		CRMFB_DID_CONTROL_DMAEN_SHIFT	0

#define CRMFB_WID		0x00048000	/* 32 WIDs */
#define CRMFB_MODE		0x00048000
#define		CRMFB_MODE_TYP_SHIFT		2
#define			CRMFB_MODE_TYP_I8	0
#define			CRMFB_MODE_TYP_I12	1
#define			CRMFB_MODE_TYP_RG3B2	2
#define			CRMFB_MODE_TYP_RGB4	3
#define			CRMFB_MODE_TYP_ARGB5	4
#define			CRMFB_MODE_TYP_RGB8	5
#define		CRMFB_MODE_BUF_SHIFT		0
#define			CRMFB_MODE_BUF_BOTH	3
#define		CRMFB_MODE_CMAP_SELECT_SHIFT	5 /* upper 5 bit */
#define		CRMFB_MODE_GAMMA_ENABLE_SHIFT	10
#define		CRMFB_MODE_FP_ENABLE_SHIFT	11 /* two bits */

#define CRMFB_CMAP		0x00050000	/* 32*256 entries */
#define CRMFB_CMAP_OVL		0x00051400
#define CRMFB_CMAP_FIFO		0x00058000
#define CRMFB_GMAP		0x00060000	/* gamma map */
#define CRMFB_CURSOR_POS	0x00070000
/*
 * upper 16 bit are Y, lower 16 bit are X - both signed so there's no need for
 * a hotspot register
 */
#define CRMFB_CURSOR_CONTROL	0x00070004
	#define CRMFB_CURSOR_ON		0x00000001
	#define CRMFB_CURSOR_CROSSHAIR	0x00000002
#define CRMFB_CURSOR_CMAP0	0x00070008
#define CRMFB_CURSOR_CMAP1	0x0007000c
#define CRMFB_CURSOR_CMAP2	0x00070010
#define CRMFB_CURSOR_BITMAP	0x00078000
/* two bit deep cursor image, zero is transparent */

/* rendering engine registers */
/* these TLBs define 16x16 tiles, 64kB each, upper 16 bit only */
#define CRIME_RE_TLB_A		0x1000
#define CRIME_RE_TLB_B		0x1200
#define CRIME_RE_TLB_C		0x1400
#define CRIME_RE_TEX		0x1600
#define CRIME_RE_CLIP_IDS	0x16e0
/* 32bit entries, 4kB page address >> 12 | 0x80000000 */
#define CRIME_RE_LINEAR_A	0x1700
#define CRIME_RE_LINEAR_B	0x1780

/* memory transfer engine from 0x3000*/
#define CRIME_MTE_MODE		0x3000
#define CRIME_MTE_BYTEMASK	0x3008
#define CRIME_MTE_STIPPLEMASK	0x3010
#define CRIME_MTE_BG		0x3018
#define CRIME_MTE_SRC0		0x3020	/* start */
#define CRIME_MTE_SRC1		0x3028	/* end */
#define CRIME_MTE_DST0		0x3030	/* start */
#define CRIME_MTE_DST1		0x3038	/* end */
#define CRIME_MTE_SRC_Y_STEP	0x3040
#define CRIME_MTE_DST_Y_STEP	0x3048
#define CRIME_MTE_NULL		0x3070
#define CRIME_MTE_FLUSH		0x3078

/* CRIME_MTE_MODE */
#define MTE_MODE_DST_ECC	0x00000001	/* enable ECC in DST */
#define MTE_MODE_SRC_ECC	0x00000002	/* enable ECC in SRC */
#define MTE_MODE_DST_BUF_MASK	0x0000001c
	#define MTE_TLB_A	0
	#define MTE_TLB_B	1
	#define MTE_TLB_C	2
	#define MTE_TLB_TEX	3
	#define MTE_TLB_LIN_A	4
	#define MTE_TLB_LIN_B	5
	#define MTE_TLB_CLIP	6
	#define MTE_DST_TLB_SHIFT 2
#define MTE_MODE_SRC_BUF_MASK	0x000000e0
	#define MTE_SRC_TLB_SHIFT 5
#define MTE_MODE_DEPTH_MASK	0x00000300
	#define MTE_DEPTH_8	0
	#define MTE_DEPTH_16	1
	#define MTE_DEPTH_32	2
	#define MTE_DEPTH_SHIFT 8
#define MTE_MODE_STIPPLE	0x00000400
#define MTE_MODE_COPY		0x00000800	/* 1 - copy, 0 - clear dst */

/* drawing engine from 0x2000 */
#define CRIME_DE_MODE_SRC	0x2000
#define CRIME_DE_MODE_DST	0x2008
#define CRIME_DE_CLIPMODE	0x2010
#define CRIME_DE_DRAWMODE	0x2018
#define CRIME_DE_SCRMASK0	0x2020
#define CRIME_DE_SCRMASK1	0x2028
#define CRIME_DE_SCRMASK2	0x2030
#define CRIME_DE_SCRMASK3	0x2038
#define CRIME_DE_SCRMASK4	0x2040
#define CRIME_DE_SCISSOR	0x2048
#define CRIME_DE_WINOFFSET_SRC	0x2050	/* x in upper, y in lower 16 bit */
#define CRIME_DE_WINOFFSET_DST	0x2058
#define CRIME_DE_PRIMITIVE	0x2060
#define CRIME_DE_X_VERTEX_0	0x2070
#define CRIME_DE_X_VERTEX_1	0x2074
#define CRIME_DE_X_VERTEX_2	0x2078
#define CRIME_DE_GL_VERTEX_0_X	0x2080
#define CRIME_DE_GL_VERTEX_0_Y	0x2084
#define CRIME_DE_GL_VERTEX_1_X	0x2088
#define CRIME_DE_GL_VERTEX_1_Y	0x208c
#define CRIME_DE_GL_VERTEX_2_X	0x2090
#define CRIME_DE_GL_VERTEX_2_Y	0x2094
#define CRIME_DE_XFER_ADDR_SRC	0x20a0
#define CRIME_DE_XFER_STRD_SRC	0x20a4
#define CRIME_DE_XFER_STEP_X	0x20a8
#define CRIME_DE_XFER_STEP_Y	0x20ac
#define CRIME_DE_XFER_ADDR_DST	0x20b0
#define CRIME_DE_XFER_STRD_DST	0x20b4
#define CRIME_DE_STIPPLE_MODE	0x20c0
#define CRIME_DE_STIPPLE_PAT	0x20c4
#define CRIME_DE_FG		0x20d0
#define CRIME_DE_BG		0x20d8
#define CRIME_DE_ALPHA_COLOR	0x21a0	/* constant colour for alpha */
#define CRIME_DE_ALPHA_FUNC	0x21a8	/* blend function */
#define CRIME_DE_ROP		0x21b0
#define CRIME_DE_PLANEMASK	0x21b8

#define CRIME_DE_NULL		0x21f0
#define CRIME_DE_FLUSH		0x21f8

#define CRIME_DE_START		0x0800	/* OR this to a register address in
					 * order to start a command */

/* CRIME_DE_MODE_* */
#define DE_MODE_TLB_A		0x00000000
#define DE_MODE_TLB_B		0x00000400
#define DE_MODE_TLB_C		0x00000800
#define DE_MODE_LIN_A		0x00001000
#define DE_MODE_LIN_B		0x00001400
#define DE_MODE_BUFDEPTH_8	0x00000000
#define DE_MODE_BUFDEPTH_16	0x00000100
#define DE_MODE_BUFDEPTH_32	0x00000200
#define DE_MODE_TYPE_CI		0x00000000
#define DE_MODE_TYPE_RGB	0x00000010
#define DE_MODE_TYPE_RGBA	0x00000020
#define DE_MODE_TYPE_ABGR	0x00000030
#define DE_MODE_TYPE_YCRCB	0x000000f0
#define DE_MODE_TYPE_MASK	0x000000f0
#define DE_MODE_PIXDEPTH_8	0x00000000
#define DE_MODE_PIXDEPTH_16	0x00000004
#define DE_MODE_PIXDEPTH_32	0x00000008
#define DE_MODE_DOUBLE_PIX	0x00000002
#define DE_MODE_DOUBLE_SELECT	0x00000001

/* clip mode */
#define DE_CLIPMODE_ENABLE	0x00000800
/* enable testing against mask register n */
#define DE_CLIPMODE_MASK0_EN	0x00000200
#define DE_CLIPMODE_MASK1_EN	0x00000100
#define DE_CLIPMODE_MASK2_EN	0x00000080
#define DE_CLIPMODE_MASK3_EN	0x00000040
#define DE_CLIPMODE_MASK4_EN	0x00000020
/* let pixels pass if inside mask n, otherwise outside */
#define DE_CLIPMODE_MASK0_IN	0x00000010
#define DE_CLIPMODE_MASK1_IN	0x00000008
#define DE_CLIPMODE_MASK2_IN	0x00000004
#define DE_CLIPMODE_MASK3_IN	0x00000002
#define DE_CLIPMODE_MASK4_IN	0x00000001

/* draw mode */
#define DE_DRAWMODE_NO_CONF	0x00800000	/* disable coherency testing */
#define DE_DRAWMODE_X11		0x00000000
#define DE_DRAWMODE_GL		0x00400000
#define DE_DRAWMODE_XFER_EN	0x00200000
#define DE_DRAWMODE_SCISSOR_EN	0x00100000
#define DE_DRAWMODE_LINE_STIP	0x00080000
#define DE_DRAWMODE_POLY_STIP	0x00040000
#define DE_DRAWMODE_OPAQUE_STIP	0x00020000
#define DE_DRAWMODE_SHADE	0x00010000	/* smooth shading enable */
#define DE_DRAWMODE_TEXTURE	0x00008000
#define DE_DRAWMODE_FOG		0x00004000
#define DE_DRAWMODE_COVERAGE	0x00002000
#define DE_DRAWMODE_LINE_AA	0x00001000
#define DE_DRAWMODE_ALPHA_TEST	0x00000800
#define DE_DRAWMODE_ALPHA_BLEND	0x00000400
#define DE_DRAWMODE_ROP		0x00000200
#define DE_DRAWMODE_DITHER	0x00000100
#define DE_DRAWMODE_PLANEMASK	0x00000080
#define DE_DRAWMODE_BYTEMASK	0x00000078
#define DE_DRAWMODE_DEPTH_TEST	0x00000004
#define DE_DRAWMODE_DEPTH_MASK	0x00000002
#define DE_DRAWMODE_STENCIL	0x00000001

/* primitive */
#define DE_PRIM_POINT		0x00000000
#define DE_PRIM_LINE		0x01000000
#define DE_PRIM_TRIANGLE	0x02000000
#define DE_PRIM_RECTANGLE	0x03000000
#define DE_PRIM_LINE_SKIP_END	0x00040000
#define DE_PRIM_LR		0x00000000	/* left to right */
#define DE_PRIM_RL		0x00010000	/* right to left */
#define DE_PRIM_BT		0x00000000	/* bottom to top */
#define DE_PRIM_TB		0x00020000	/* top to bottom */
#define DE_PRIM_LINE_WIDTH_MASK	0x0000ffff	/* in half pixels */

/* CRIME_DE_STIPPLE_MODE */
#define DE_STIP_MAXREP_SHIFT	0	/* max. repeats 8 bit */
#define DE_STIP_REPCNT_SHIFT	8	/* repeat count, 8 bit */
#define DE_STIP_MAXIDX_SHIFT	16	/* max. index, 5 bit */
#define DE_STIP_STRTIDX_SHIFT	24	/* start index, 5 bit */

/* alpha function register */
#define DE_ALPHA_ADD		0x00000000
#define DE_ALPHA_MIN		0x00000100
#define DE_ALPHA_MAX		0x00000200
#define DE_ALPHA_SUB		0x00000300
#define DE_ALPHA_REV_SUB	0x00000400

#define DE_ALPHA_OP_ZERO		0
#define DE_ALPHA_OP_ONE			1
#define DE_ALPHA_OP_DST_COLOR		2
#define DE_ALPHA_OP_1_MINUS_DST_COLOR	3
#define DE_ALPHA_OP_SRC_ALPHA		4
#define DE_ALPHA_OP_1_MINUS_SRC_ALPHA	5
#define DE_ALPHA_OP_DST_ALPHA		6
#define DE_ALPHA_OP_1_MINUS_DST_APLHA	7
#define DE_ALPHA_OP_CONSTANT_COLOR	8
#define DE_ALPHA_OP_1_MINUS_CONST_COLOR	9
#define DE_ALPHA_OP_CONSTANT_ALPHA	10
#define DE_ALPHA_OP_1_MINUS_CONST_ALPHA	11
#define DE_ALPHA_OP_SRC_ALPHA_SATURATE	12

#define DE_ALPHA_OP_SRC_SHIFT 4
#define DE_ALPHA_OP_DST_SHIFT 0

/* status register */
#define CRIME_DE_STATUS		0x4000
#define CRIME_DE_IDLE		0x10000000
#define CRIME_DE_SETUP_IDLE	0x08000000
#define CRIME_DE_PIXPIPE_IDLE	0x04000000
#define CRIME_DE_MTE_IDLE	0x02000000
#define CRIME_DE_LEVEL_MASK	0x01fc0000
#define CRIME_DE_RD_PTR_MASK	0x0003f000
#define CRIME_DE_WR_PTR_MASK	0x00000fc0
#define CRIME_DE_BUF_START	0x0000003f

#define CRIME_DE_LEVEL_SHIFT	18
/*
 * XXX
 * The manual claims that the pipeline is 128 deep, in reality it seems to be
 * 64, at least on my O2. Might be 128 deep on O2+
 */ 
#define CRIME_DE_LEVEL_MAX	0x3f
#define CRIME_PIPE_LEVEL(x)	((x & CRIME_DE_LEVEL_MASK) >>  \
				  CRIME_DE_LEVEL_SHIFT)

#endif /* CRMFBREG_H */