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/* $OpenBSD: gbereg.h,v 1.3 2007/12/31 12:46:14 jsing Exp $ */
/*
* Copyright (c) 2007, Joel Sing <jsing@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* GBE Framebuffer for SGI O2.
*/
#define GBE_BASE 0x16000000
#define GBE_REG_SIZE 0x100000
#define GBE_TLB_SIZE 128
#define GBE_TILE_SHIFT 16
#define GBE_TILE_SIZE (1 << GBE_TILE_SHIFT)
/*
* Register locations.
*/
#define GBE_CTRL_STAT 0x00000000 /* General control/status */
#define GBE_DOTCLOCK 0x00000004 /* Dotclock */
#define GBE_DOTCLOCK_RUN 0x00100000 /* Enable dotclock */
#define GBE_VT_XY 0x00010000 /* Current dot coordinates */
#define GBE_VT_XY_X_SHIFT 0
#define GBE_VT_XY_X_MASK 0x00000fff
#define GBE_VT_XY_Y_SHIFT 12
#define GBE_VT_XY_Y_MASK 0x00fff000
#define GBE_VT_XY_FREEZE 0x80000000 /* Freeze pixel counter */
#define GBE_VT_MAXXY 0x00010004 /* */
#define GBE_VT_VSYNC 0x00010008 /* Vertical sync on/off */
#define GBE_VT_HSYNC 0x0001000c /* Horizontal sync on/off */
#define GBE_VT_VBLANK 0x00010010 /* Vertical blanking */
#define GBE_VT_HBLANK 0x00010014 /* Horizontal blanking */
#define GBE_VT_FLAGS 0x00010018 /* Video timing flags */
#define GBE_VT_SYNC_LOW 0x00000010 /* Sync on green */
#define GBE_VT_HPIX 0x00010034 /* Horizontal pixel on/off */
#define GBE_VT_VPIX 0x00010038 /* Vertical pixel on/off */
#define GBE_VT_VPIX_OFF_MASK 0x00000fff
#define GBE_VT_VPIX_OFF_SHIFT 0
#define GBE_VT_VPIX_ON_MASK 0x00fff000
#define GBE_VT_VPIX_ON_SHIFT 12
#define GBE_VT_HCMAP 0x0001003c /* Horizontal cmap write */
#define GBE_VT_HCMAP_ON_SHIFT 12
#define GBE_VT_VCMAP 0x00010040 /* Vertical cmap write */
#define GBE_VT_VCMAP_ON_SHIFT 12
#define GBE_VT_DIDSTARTXY 0x00010044 /* DID reset at x/y */
#define GBE_VT_CRSSTARTXY 0x00010048 /* CRS reset at x/y */
#define GBE_VT_VCSTARTXY 0x0001004c /* VC reset at x/y */
#define GBE_OVERLAY_TILE 0x00020000 /* Overlay plane - tile width */
#define GBE_OVERLAY_HW_CTRL 0x00020004 /* Overlay plane - h/w control */
#define GBE_OVERLAY_CTRL 0x00020008 /* Overlay plane - control */
#define GBE_OVERLAY_CTRL_DMA_ENABLE 0x00000001
#define GBE_FB_SIZE_TILE 0x00030000 /* Framebuffer - tile size */
#define GBE_FB_SIZE_TILE_WIDTH_SHIFT 5
#define GBE_FB_SIZE_TILE_DEPTH_SHIFT 13
#define GBE_FB_SIZE_TILE_FIFO_RESET_SHIFT 15
#define GBE_FB_SIZE_PIXEL 0x00030004 /* Framebuffer - pixel size */
#define GBE_FB_SIZE_PIXEL_HEIGHT_SHIFT 16
#define GBE_FB_HW_CTRL 0x00030008 /* Framebuffer - hardware control */
#define GBE_FB_CTRL 0x0003000c /* Framebuffer - control */
#define GBE_FB_CTRL_TILE_PTR_SHIFT 9
#define GBE_FB_CTRL_DMA_ENABLE 0x00000001
#define GBE_DID_HW_CTRL 0x00040000 /* DID hardware control */
#define GBE_DID_CTRL 0x00040004 /* DID control */
#define GBE_MODE 0x00048000 /* Colour mode */
#define GBE_WID_MODE_SHIFT 2
#define GBE_CMAP 0x050000 /* Colourmap */
#define GBE_CMAP_ENTRIES 6144
#define GBE_CMAP_FIFO 0x058000 /* Colourmap FIFO status */
#define GBE_CMAP_FIFO_ENTRIES 63
#define GBE_GMAP 0x060000 /* Gammamap */
#define GBE_GMAP_ENTRIES 256
#define GBE_CURSOR_POS 0x00070000 /* Cursor position */
#define GBE_CURSOR_CTRL 0x00070004 /* Cursor control */
/*
* Constants.
*/
#define GBE_FB_DEPTH_8 0
#define GBE_FB_DEPTH_16 1
#define GBE_FB_DEPTH_32 2
#define GBE_CMODE_I8 0 /* 8 bit indexed */
#define GBE_CMODE_I12 1 /* 12 bit indexed */
#define GBE_CMODE_RG3B2 2 /* 3:3:2 direct */
#define GBE_CMODE_RGB4 3 /* 4:4:4 direct */
#define GBE_CMODE_ARGB5 4 /* 1:5:5:5 direct */
#define GBE_CMODE_RGB8 5 /* 8:8:8 direct */
#define GBE_CMODE_RGBA5 6 /* 5:5:5:5 direct */
#define GBE_CMODE_RGB10 7 /* 10:10:10 direct */
#define GBE_BMODE_BOTH 3
/*
* Console functions.
*/
int gbe_cnprobe(bus_space_tag_t, bus_addr_t addr);
int gbe_cnattach(bus_space_tag_t, bus_addr_t addr);
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