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406 lines
10 KiB
406 lines
10 KiB
/* |
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* linux/drivers/video/console/bitblit.c -- BitBlitting Operation |
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* |
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* Originally from the 'accel_*' routines in drivers/video/console/fbcon.c |
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* |
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* Copyright (C) 2004 Antonino Daplas <adaplas @pol.net> |
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* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file COPYING in the main directory of this archive for |
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* more details. |
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*/ |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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#include <linux/string.h> |
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#include <linux/fb.h> |
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#include <linux/vt_kern.h> |
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#include <linux/console.h> |
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#include <asm/types.h> |
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#include "fbcon.h" |
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/* |
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* Accelerated handlers. |
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*/ |
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static void update_attr(u8 *dst, u8 *src, int attribute, |
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struct vc_data *vc) |
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{ |
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int i, offset = (vc->vc_font.height < 10) ? 1 : 2; |
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int width = DIV_ROUND_UP(vc->vc_font.width, 8); |
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unsigned int cellsize = vc->vc_font.height * width; |
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u8 c; |
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offset = cellsize - (offset * width); |
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for (i = 0; i < cellsize; i++) { |
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c = src[i]; |
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if (attribute & FBCON_ATTRIBUTE_UNDERLINE && i >= offset) |
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c = 0xff; |
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if (attribute & FBCON_ATTRIBUTE_BOLD) |
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c |= c >> 1; |
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if (attribute & FBCON_ATTRIBUTE_REVERSE) |
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c = ~c; |
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dst[i] = c; |
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} |
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} |
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static void bit_bmove(struct vc_data *vc, struct fb_info *info, int sy, |
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int sx, int dy, int dx, int height, int width) |
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{ |
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struct fb_copyarea area; |
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area.sx = sx * vc->vc_font.width; |
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area.sy = sy * vc->vc_font.height; |
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area.dx = dx * vc->vc_font.width; |
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area.dy = dy * vc->vc_font.height; |
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area.height = height * vc->vc_font.height; |
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area.width = width * vc->vc_font.width; |
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info->fbops->fb_copyarea(info, &area); |
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} |
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static void bit_clear(struct vc_data *vc, struct fb_info *info, int sy, |
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int sx, int height, int width) |
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{ |
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int bgshift = (vc->vc_hi_font_mask) ? 13 : 12; |
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struct fb_fillrect region; |
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region.color = attr_bgcol_ec(bgshift, vc, info); |
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region.dx = sx * vc->vc_font.width; |
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region.dy = sy * vc->vc_font.height; |
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region.width = width * vc->vc_font.width; |
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region.height = height * vc->vc_font.height; |
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region.rop = ROP_COPY; |
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info->fbops->fb_fillrect(info, ®ion); |
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} |
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static inline void bit_putcs_aligned(struct vc_data *vc, struct fb_info *info, |
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const u16 *s, u32 attr, u32 cnt, |
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u32 d_pitch, u32 s_pitch, u32 cellsize, |
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struct fb_image *image, u8 *buf, u8 *dst) |
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{ |
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u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; |
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u32 idx = vc->vc_font.width >> 3; |
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u8 *src; |
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while (cnt--) { |
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src = vc->vc_font.data + (scr_readw(s++)& |
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charmask)*cellsize; |
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if (attr) { |
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update_attr(buf, src, attr, vc); |
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src = buf; |
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} |
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if (likely(idx == 1)) |
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__fb_pad_aligned_buffer(dst, d_pitch, src, idx, |
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image->height); |
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else |
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fb_pad_aligned_buffer(dst, d_pitch, src, idx, |
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image->height); |
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dst += s_pitch; |
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} |
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info->fbops->fb_imageblit(info, image); |
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} |
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static inline void bit_putcs_unaligned(struct vc_data *vc, |
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struct fb_info *info, const u16 *s, |
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u32 attr, u32 cnt, u32 d_pitch, |
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u32 s_pitch, u32 cellsize, |
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struct fb_image *image, u8 *buf, |
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u8 *dst) |
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{ |
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u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; |
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u32 shift_low = 0, mod = vc->vc_font.width % 8; |
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u32 shift_high = 8; |
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u32 idx = vc->vc_font.width >> 3; |
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u8 *src; |
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while (cnt--) { |
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src = vc->vc_font.data + (scr_readw(s++)& |
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charmask)*cellsize; |
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if (attr) { |
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update_attr(buf, src, attr, vc); |
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src = buf; |
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} |
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fb_pad_unaligned_buffer(dst, d_pitch, src, idx, |
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image->height, shift_high, |
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shift_low, mod); |
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shift_low += mod; |
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dst += (shift_low >= 8) ? s_pitch : s_pitch - 1; |
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shift_low &= 7; |
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shift_high = 8 - shift_low; |
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} |
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info->fbops->fb_imageblit(info, image); |
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} |
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static void bit_putcs(struct vc_data *vc, struct fb_info *info, |
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const unsigned short *s, int count, int yy, int xx, |
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int fg, int bg) |
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{ |
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struct fb_image image; |
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u32 width = DIV_ROUND_UP(vc->vc_font.width, 8); |
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u32 cellsize = width * vc->vc_font.height; |
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u32 maxcnt = info->pixmap.size/cellsize; |
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u32 scan_align = info->pixmap.scan_align - 1; |
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u32 buf_align = info->pixmap.buf_align - 1; |
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u32 mod = vc->vc_font.width % 8, cnt, pitch, size; |
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u32 attribute = get_attribute(info, scr_readw(s)); |
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u8 *dst, *buf = NULL; |
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image.fg_color = fg; |
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image.bg_color = bg; |
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image.dx = xx * vc->vc_font.width; |
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image.dy = yy * vc->vc_font.height; |
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image.height = vc->vc_font.height; |
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image.depth = 1; |
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if (attribute) { |
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buf = kmalloc(cellsize, GFP_ATOMIC); |
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if (!buf) |
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return; |
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} |
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while (count) { |
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if (count > maxcnt) |
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cnt = maxcnt; |
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else |
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cnt = count; |
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image.width = vc->vc_font.width * cnt; |
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pitch = DIV_ROUND_UP(image.width, 8) + scan_align; |
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pitch &= ~scan_align; |
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size = pitch * image.height + buf_align; |
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size &= ~buf_align; |
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dst = fb_get_buffer_offset(info, &info->pixmap, size); |
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image.data = dst; |
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if (!mod) |
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bit_putcs_aligned(vc, info, s, attribute, cnt, pitch, |
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width, cellsize, &image, buf, dst); |
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else |
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bit_putcs_unaligned(vc, info, s, attribute, cnt, |
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pitch, width, cellsize, &image, |
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buf, dst); |
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image.dx += cnt * vc->vc_font.width; |
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count -= cnt; |
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s += cnt; |
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} |
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/* buf is always NULL except when in monochrome mode, so in this case |
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it's a gain to check buf against NULL even though kfree() handles |
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NULL pointers just fine */ |
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if (unlikely(buf)) |
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kfree(buf); |
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} |
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static void bit_clear_margins(struct vc_data *vc, struct fb_info *info, |
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int color, int bottom_only) |
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{ |
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unsigned int cw = vc->vc_font.width; |
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unsigned int ch = vc->vc_font.height; |
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unsigned int rw = info->var.xres - (vc->vc_cols*cw); |
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unsigned int bh = info->var.yres - (vc->vc_rows*ch); |
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unsigned int rs = info->var.xres - rw; |
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unsigned int bs = info->var.yres - bh; |
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struct fb_fillrect region; |
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region.color = color; |
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region.rop = ROP_COPY; |
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if ((int) rw > 0 && !bottom_only) { |
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region.dx = info->var.xoffset + rs; |
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region.dy = 0; |
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region.width = rw; |
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region.height = info->var.yres_virtual; |
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info->fbops->fb_fillrect(info, ®ion); |
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} |
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if ((int) bh > 0) { |
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region.dx = info->var.xoffset; |
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region.dy = info->var.yoffset + bs; |
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region.width = rs; |
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region.height = bh; |
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info->fbops->fb_fillrect(info, ®ion); |
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} |
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} |
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static void bit_cursor(struct vc_data *vc, struct fb_info *info, int mode, |
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int fg, int bg) |
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{ |
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struct fb_cursor cursor; |
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struct fbcon_ops *ops = info->fbcon_par; |
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unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; |
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int w = DIV_ROUND_UP(vc->vc_font.width, 8), c; |
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int y = real_y(ops->p, vc->state.y); |
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int attribute, use_sw = vc->vc_cursor_type & CUR_SW; |
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int err = 1; |
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char *src; |
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cursor.set = 0; |
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c = scr_readw((u16 *) vc->vc_pos); |
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attribute = get_attribute(info, c); |
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src = vc->vc_font.data + ((c & charmask) * (w * vc->vc_font.height)); |
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if (ops->cursor_state.image.data != src || |
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ops->cursor_reset) { |
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ops->cursor_state.image.data = src; |
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cursor.set |= FB_CUR_SETIMAGE; |
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} |
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if (attribute) { |
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u8 *dst; |
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dst = kmalloc_array(w, vc->vc_font.height, GFP_ATOMIC); |
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if (!dst) |
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return; |
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kfree(ops->cursor_data); |
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ops->cursor_data = dst; |
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update_attr(dst, src, attribute, vc); |
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src = dst; |
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} |
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if (ops->cursor_state.image.fg_color != fg || |
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ops->cursor_state.image.bg_color != bg || |
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ops->cursor_reset) { |
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ops->cursor_state.image.fg_color = fg; |
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ops->cursor_state.image.bg_color = bg; |
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cursor.set |= FB_CUR_SETCMAP; |
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} |
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if ((ops->cursor_state.image.dx != (vc->vc_font.width * vc->state.x)) || |
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(ops->cursor_state.image.dy != (vc->vc_font.height * y)) || |
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ops->cursor_reset) { |
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ops->cursor_state.image.dx = vc->vc_font.width * vc->state.x; |
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ops->cursor_state.image.dy = vc->vc_font.height * y; |
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cursor.set |= FB_CUR_SETPOS; |
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} |
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if (ops->cursor_state.image.height != vc->vc_font.height || |
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ops->cursor_state.image.width != vc->vc_font.width || |
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ops->cursor_reset) { |
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ops->cursor_state.image.height = vc->vc_font.height; |
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ops->cursor_state.image.width = vc->vc_font.width; |
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cursor.set |= FB_CUR_SETSIZE; |
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} |
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if (ops->cursor_state.hot.x || ops->cursor_state.hot.y || |
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ops->cursor_reset) { |
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ops->cursor_state.hot.x = cursor.hot.y = 0; |
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cursor.set |= FB_CUR_SETHOT; |
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} |
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if (cursor.set & FB_CUR_SETSIZE || |
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vc->vc_cursor_type != ops->p->cursor_shape || |
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ops->cursor_state.mask == NULL || |
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ops->cursor_reset) { |
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char *mask = kmalloc_array(w, vc->vc_font.height, GFP_ATOMIC); |
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int cur_height, size, i = 0; |
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u8 msk = 0xff; |
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if (!mask) |
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return; |
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kfree(ops->cursor_state.mask); |
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ops->cursor_state.mask = mask; |
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ops->p->cursor_shape = vc->vc_cursor_type; |
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cursor.set |= FB_CUR_SETSHAPE; |
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switch (CUR_SIZE(ops->p->cursor_shape)) { |
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case CUR_NONE: |
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cur_height = 0; |
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break; |
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case CUR_UNDERLINE: |
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cur_height = (vc->vc_font.height < 10) ? 1 : 2; |
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break; |
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case CUR_LOWER_THIRD: |
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cur_height = vc->vc_font.height/3; |
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break; |
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case CUR_LOWER_HALF: |
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cur_height = vc->vc_font.height >> 1; |
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break; |
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case CUR_TWO_THIRDS: |
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cur_height = (vc->vc_font.height << 1)/3; |
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break; |
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case CUR_BLOCK: |
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default: |
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cur_height = vc->vc_font.height; |
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break; |
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} |
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size = (vc->vc_font.height - cur_height) * w; |
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while (size--) |
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mask[i++] = ~msk; |
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size = cur_height * w; |
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while (size--) |
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mask[i++] = msk; |
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} |
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switch (mode) { |
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case CM_ERASE: |
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ops->cursor_state.enable = 0; |
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break; |
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case CM_DRAW: |
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case CM_MOVE: |
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default: |
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ops->cursor_state.enable = (use_sw) ? 0 : 1; |
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break; |
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} |
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cursor.image.data = src; |
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cursor.image.fg_color = ops->cursor_state.image.fg_color; |
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cursor.image.bg_color = ops->cursor_state.image.bg_color; |
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cursor.image.dx = ops->cursor_state.image.dx; |
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cursor.image.dy = ops->cursor_state.image.dy; |
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cursor.image.height = ops->cursor_state.image.height; |
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cursor.image.width = ops->cursor_state.image.width; |
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cursor.hot.x = ops->cursor_state.hot.x; |
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cursor.hot.y = ops->cursor_state.hot.y; |
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cursor.mask = ops->cursor_state.mask; |
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cursor.enable = ops->cursor_state.enable; |
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cursor.image.depth = 1; |
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cursor.rop = ROP_XOR; |
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if (info->fbops->fb_cursor) |
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err = info->fbops->fb_cursor(info, &cursor); |
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if (err) |
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soft_cursor(info, &cursor); |
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ops->cursor_reset = 0; |
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} |
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static int bit_update_start(struct fb_info *info) |
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{ |
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struct fbcon_ops *ops = info->fbcon_par; |
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int err; |
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err = fb_pan_display(info, &ops->var); |
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ops->var.xoffset = info->var.xoffset; |
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ops->var.yoffset = info->var.yoffset; |
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ops->var.vmode = info->var.vmode; |
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return err; |
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} |
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void fbcon_set_bitops(struct fbcon_ops *ops) |
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{ |
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ops->bmove = bit_bmove; |
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ops->clear = bit_clear; |
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ops->putcs = bit_putcs; |
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ops->clear_margins = bit_clear_margins; |
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ops->cursor = bit_cursor; |
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ops->update_start = bit_update_start; |
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ops->rotate_font = NULL; |
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if (ops->rotate) |
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fbcon_set_rotate(ops); |
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}
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