31de59d5e1
The main motivation of this patch was to merge the three initialization functions in one and clean it up. However as some changes in other code areas where needed to do it right some small other changes were made. Changes to viafb_par: io_virt renamed as engine_mmio and moved to shared VQ_start renamed as vq_vram_addr and moved to shared VQ_end removed as it is easily recalculatable vq_vram_addr is not strictly needed but keep it to track where we allocated video memory. The memory allocated for the virtual queue was shrunk to VQ_SIZE as VQ_SIZE+CURSOR_SIZE looked like a bug to me. But to be honest I don't have the faintest idea what virtual queues are for in the graphic hardware and whether the driver needs them in any way. I only know that they aren't directly accessed by the driver and so the only potential current use would be as hardware internal buffers. For now keep them to avoid regressions and only remove the double cursor allocation. The most changes were caused by renames and the mentioned structure changes so the chance of regressions is pretty low. The meaning of viafb_accel changed slightly as previously it was changed back and forth in the code and allowed to enable the hardware acceleration by software if previously disabled. The new behaviour is that viafb_accel=0 always prevents hardware acceleration. With viafb_accel!=0 the acceleration can be freely choosen by set_var. This means viafb_accel is a diagnostic tool and if someone has to use viafb_accel=0 the driver needs to be fixed. As this is mostly a code cleanup no regressions beside the slightly change of viafb_accel is expected. Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Scott Fang <ScottFang@viatech.com.cn> Cc: Joseph Chan <JosephChan@via.com.tw> Cc: Harald Welte <laforge@gnumonks.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
171 lines
5.5 KiB
C
171 lines
5.5 KiB
C
/*
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* Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.
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* Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation;
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* either version 2, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR
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* A PARTICULAR PURPOSE.See the GNU General Public License
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* for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __ACCEL_H__
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#define __ACCEL_H__
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#define FB_ACCEL_VIA_UNICHROME 50
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/* MMIO Base Address Definition */
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#define MMIO_VGABASE 0x8000
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#define MMIO_CR_READ (MMIO_VGABASE + 0x3D4)
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#define MMIO_CR_WRITE (MMIO_VGABASE + 0x3D5)
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#define MMIO_SR_READ (MMIO_VGABASE + 0x3C4)
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#define MMIO_SR_WRITE (MMIO_VGABASE + 0x3C5)
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/* HW Cursor Status Define */
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#define HW_Cursor_ON 0
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#define HW_Cursor_OFF 1
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#define CURSOR_SIZE (8 * 1024)
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#define VQ_SIZE (256 * 1024)
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#define VIA_MMIO_BLTBASE 0x200000
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#define VIA_MMIO_BLTSIZE 0x200000
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/* Defines for 2D registers */
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#define VIA_REG_GECMD 0x000
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#define VIA_REG_GEMODE 0x004
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#define VIA_REG_SRCPOS 0x008
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#define VIA_REG_DSTPOS 0x00C
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/* width and height */
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#define VIA_REG_DIMENSION 0x010
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#define VIA_REG_PATADDR 0x014
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#define VIA_REG_FGCOLOR 0x018
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#define VIA_REG_BGCOLOR 0x01C
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/* top and left of clipping */
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#define VIA_REG_CLIPTL 0x020
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/* bottom and right of clipping */
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#define VIA_REG_CLIPBR 0x024
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#define VIA_REG_OFFSET 0x028
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/* color key control */
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#define VIA_REG_KEYCONTROL 0x02C
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#define VIA_REG_SRCBASE 0x030
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#define VIA_REG_DSTBASE 0x034
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/* pitch of src and dst */
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#define VIA_REG_PITCH 0x038
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#define VIA_REG_MONOPAT0 0x03C
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#define VIA_REG_MONOPAT1 0x040
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/* from 0x100 to 0x1ff */
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#define VIA_REG_COLORPAT 0x100
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/* VIA_REG_PITCH(0x38): Pitch Setting */
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#define VIA_PITCH_ENABLE 0x80000000
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/* defines for VIA HW cursor registers */
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#define VIA_REG_CURSOR_MODE 0x2D0
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#define VIA_REG_CURSOR_POS 0x2D4
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#define VIA_REG_CURSOR_ORG 0x2D8
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#define VIA_REG_CURSOR_BG 0x2DC
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#define VIA_REG_CURSOR_FG 0x2E0
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/* VIA_REG_GEMODE(0x04): GE mode */
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#define VIA_GEM_8bpp 0x00000000
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#define VIA_GEM_16bpp 0x00000100
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#define VIA_GEM_32bpp 0x00000300
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/* VIA_REG_GECMD(0x00): 2D Engine Command */
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#define VIA_GEC_NOOP 0x00000000
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#define VIA_GEC_BLT 0x00000001
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#define VIA_GEC_LINE 0x00000005
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/* Rotate Command */
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#define VIA_GEC_ROT 0x00000008
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#define VIA_GEC_SRC_XY 0x00000000
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#define VIA_GEC_SRC_LINEAR 0x00000010
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#define VIA_GEC_DST_XY 0x00000000
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#define VIA_GEC_DST_LINRAT 0x00000020
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#define VIA_GEC_SRC_FB 0x00000000
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#define VIA_GEC_SRC_SYS 0x00000040
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#define VIA_GEC_DST_FB 0x00000000
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#define VIA_GEC_DST_SYS 0x00000080
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/* source is mono */
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#define VIA_GEC_SRC_MONO 0x00000100
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/* pattern is mono */
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#define VIA_GEC_PAT_MONO 0x00000200
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/* mono src is opaque */
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#define VIA_GEC_MSRC_OPAQUE 0x00000000
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/* mono src is transparent */
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#define VIA_GEC_MSRC_TRANS 0x00000400
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/* pattern is in frame buffer */
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#define VIA_GEC_PAT_FB 0x00000000
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/* pattern is from reg setting */
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#define VIA_GEC_PAT_REG 0x00000800
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#define VIA_GEC_CLIP_DISABLE 0x00000000
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#define VIA_GEC_CLIP_ENABLE 0x00001000
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#define VIA_GEC_FIXCOLOR_PAT 0x00002000
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#define VIA_GEC_INCX 0x00000000
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#define VIA_GEC_DECY 0x00004000
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#define VIA_GEC_INCY 0x00000000
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#define VIA_GEC_DECX 0x00008000
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/* mono pattern is opaque */
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#define VIA_GEC_MPAT_OPAQUE 0x00000000
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/* mono pattern is transparent */
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#define VIA_GEC_MPAT_TRANS 0x00010000
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#define VIA_GEC_MONO_UNPACK 0x00000000
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#define VIA_GEC_MONO_PACK 0x00020000
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#define VIA_GEC_MONO_DWORD 0x00000000
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#define VIA_GEC_MONO_WORD 0x00040000
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#define VIA_GEC_MONO_BYTE 0x00080000
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#define VIA_GEC_LASTPIXEL_ON 0x00000000
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#define VIA_GEC_LASTPIXEL_OFF 0x00100000
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#define VIA_GEC_X_MAJOR 0x00000000
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#define VIA_GEC_Y_MAJOR 0x00200000
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#define VIA_GEC_QUICK_START 0x00800000
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/* defines for VIA 3D registers */
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#define VIA_REG_STATUS 0x400
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#define VIA_REG_CR_TRANSET 0x41C
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#define VIA_REG_CR_TRANSPACE 0x420
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#define VIA_REG_TRANSET 0x43C
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#define VIA_REG_TRANSPACE 0x440
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/* VIA_REG_STATUS(0x400): Engine Status */
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/* Command Regulator is busy */
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#define VIA_CMD_RGTR_BUSY 0x00000080
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/* 2D Engine is busy */
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#define VIA_2D_ENG_BUSY 0x00000002
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/* 3D Engine is busy */
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#define VIA_3D_ENG_BUSY 0x00000001
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/* Virtual Queue is busy */
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#define VIA_VR_QUEUE_BUSY 0x00020000
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#define MAXLOOP 0xFFFFFF
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#define VIA_BITBLT_COLOR 1
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#define VIA_BITBLT_MONO 2
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#define VIA_BITBLT_FILL 3
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int viafb_init_engine(struct fb_info *info);
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void viafb_show_hw_cursor(struct fb_info *info, int Status);
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void viafb_wait_engine_idle(struct fb_info *info);
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#endif /* __ACCEL_H__ */
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