--- /dev/null
+/*
+ * linux/drivers/video/console/bitblit.c -- BitBlitting Operation
+ *
+ * Originally from the 'accel_*' routines in drivers/video/console/fbcon.c
+ *
+ * Copyright (C) 2004 Antonino Daplas <adaplas @pol.net>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/fb.h>
+#include <linux/vt_kern.h>
+#include <linux/console.h>
+#include <asm/types.h>
+#include "fbcon.h"
+
+/*
+ * Accelerated handlers.
+ */
+#define FBCON_ATTRIBUTE_UNDERLINE 1
+#define FBCON_ATTRIBUTE_REVERSE 2
+#define FBCON_ATTRIBUTE_BOLD 4
+
+static inline int real_y(struct display *p, int ypos)
+{
+ int rows = p->vrows;
+
+ ypos += p->yscroll;
+ return ypos < rows ? ypos : ypos - rows;
+}
+
+
+static inline int get_attribute(struct fb_info *info, u16 c)
+{
+ int attribute = 0;
+
+ if (fb_get_color_depth(info) == 1) {
+ if (attr_underline(c))
+ attribute |= FBCON_ATTRIBUTE_UNDERLINE;
+ if (attr_reverse(c))
+ attribute |= FBCON_ATTRIBUTE_REVERSE;
+ if (attr_bold(c))
+ attribute |= FBCON_ATTRIBUTE_BOLD;
+ }
+
+ return attribute;
+}
+
+static inline void update_attr(u8 *dst, u8 *src, int attribute,
+ struct vc_data *vc)
+{
+ int i, offset = (vc->vc_font.height < 10) ? 1 : 2;
+ int width = (vc->vc_font.width + 7) >> 3;
+ unsigned int cellsize = vc->vc_font.height * width;
+ u8 c;
+
+ offset = cellsize - (offset * width);
+ for (i = 0; i < cellsize; i++) {
+ c = src[i];
+ if (attribute & FBCON_ATTRIBUTE_UNDERLINE && i >= offset)
+ c = 0xff;
+ if (attribute & FBCON_ATTRIBUTE_BOLD)
+ c |= c >> 1;
+ if (attribute & FBCON_ATTRIBUTE_REVERSE)
+ c = ~c;
+ dst[i] = c;
+ }
+}
+
+static void bit_bmove(struct vc_data *vc, struct fb_info *info, int sy,
+ int sx, int dy, int dx, int height, int width)
+{
+ struct fb_copyarea area;
+
+ area.sx = sx * vc->vc_font.width;
+ area.sy = sy * vc->vc_font.height;
+ area.dx = dx * vc->vc_font.width;
+ area.dy = dy * vc->vc_font.height;
+ area.height = height * vc->vc_font.height;
+ area.width = width * vc->vc_font.width;
+
+ info->fbops->fb_copyarea(info, &area);
+}
+
+static void bit_clear(struct vc_data *vc, struct fb_info *info, int sy,
+ int sx, int height, int width)
+{
+ int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
+ struct fb_fillrect region;
+
+ region.color = attr_bgcol_ec(bgshift, vc);
+ region.dx = sx * vc->vc_font.width;
+ region.dy = sy * vc->vc_font.height;
+ region.width = width * vc->vc_font.width;
+ region.height = height * vc->vc_font.height;
+ region.rop = ROP_COPY;
+
+ info->fbops->fb_fillrect(info, ®ion);
+}
+
+static void bit_putcs(struct vc_data *vc, struct fb_info *info,
+ const unsigned short *s, int count, int yy, int xx,
+ int fg, int bg)
+{
+ void (*move_unaligned)(struct fb_info *info, struct fb_pixmap *buf,
+ u8 *dst, u32 d_pitch, u8 *src, u32 idx,
+ u32 height, u32 shift_high, u32 shift_low,
+ u32 mod);
+ void (*move_aligned)(struct fb_info *info, struct fb_pixmap *buf,
+ u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch,
+ u32 height);
+ unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
+ unsigned int width = (vc->vc_font.width + 7) >> 3;
+ unsigned int cellsize = vc->vc_font.height * width;
+ unsigned int maxcnt = info->pixmap.size/cellsize;
+ unsigned int scan_align = info->pixmap.scan_align - 1;
+ unsigned int buf_align = info->pixmap.buf_align - 1;
+ unsigned int shift_low = 0, mod = vc->vc_font.width % 8;
+ unsigned int shift_high = 8, pitch, cnt, size, k;
+ unsigned int idx = vc->vc_font.width >> 3;
+ unsigned int attribute = get_attribute(info, scr_readw(s));
+ struct fb_image image;
+ u8 *src, *dst, *buf = NULL;
+
+ if (attribute) {
+ buf = kmalloc(cellsize, GFP_KERNEL);
+ if (!buf)
+ return;
+ }
+
+ image.fg_color = fg;
+ image.bg_color = bg;
+
+ image.dx = xx * vc->vc_font.width;
+ image.dy = yy * vc->vc_font.height;
+ image.height = vc->vc_font.height;
+ image.depth = 1;
+
+ if (info->pixmap.outbuf && info->pixmap.inbuf) {
+ move_aligned = fb_iomove_buf_aligned;
+ move_unaligned = fb_iomove_buf_unaligned;
+ } else {
+ move_aligned = fb_sysmove_buf_aligned;
+ move_unaligned = fb_sysmove_buf_unaligned;
+ }
+ while (count) {
+ if (count > maxcnt)
+ cnt = k = maxcnt;
+ else
+ cnt = k = count;
+
+ image.width = vc->vc_font.width * cnt;
+ pitch = ((image.width + 7) >> 3) + scan_align;
+ pitch &= ~scan_align;
+ size = pitch * image.height + buf_align;
+ size &= ~buf_align;
+ dst = fb_get_buffer_offset(info, &info->pixmap, size);
+ image.data = dst;
+ if (mod) {
+ while (k--) {
+ src = vc->vc_font.data + (scr_readw(s++)&
+ charmask)*cellsize;
+
+ if (attribute) {
+ update_attr(buf, src, attribute, vc);
+ src = buf;
+ }
+
+ move_unaligned(info, &info->pixmap, dst, pitch,
+ src, idx, image.height,
+ shift_high, shift_low, mod);
+ shift_low += mod;
+ dst += (shift_low >= 8) ? width : width - 1;
+ shift_low &= 7;
+ shift_high = 8 - shift_low;
+ }
+ } else {
+ while (k--) {
+ src = vc->vc_font.data + (scr_readw(s++)&
+ charmask)*cellsize;
+
+ if (attribute) {
+ update_attr(buf, src, attribute, vc);
+ src = buf;
+ }
+
+ move_aligned(info, &info->pixmap, dst, pitch,
+ src, idx, image.height);
+ dst += width;
+ }
+ }
+ info->fbops->fb_imageblit(info, &image);
+ image.dx += cnt * vc->vc_font.width;
+ count -= cnt;
+ }
+
+ if (buf)
+ kfree(buf);
+}
+
+static void bit_clear_margins(struct vc_data *vc, struct fb_info *info,
+ int bottom_only)
+{
+ int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
+ unsigned int cw = vc->vc_font.width;
+ unsigned int ch = vc->vc_font.height;
+ unsigned int rw = info->var.xres - (vc->vc_cols*cw);
+ unsigned int bh = info->var.yres - (vc->vc_rows*ch);
+ unsigned int rs = info->var.xres - rw;
+ unsigned int bs = info->var.yres - bh;
+ struct fb_fillrect region;
+
+ region.color = attr_bgcol_ec(bgshift, vc);
+ region.rop = ROP_COPY;
+
+ if (rw && !bottom_only) {
+ region.dx = info->var.xoffset + rs;
+ region.dy = 0;
+ region.width = rw;
+ region.height = info->var.yres_virtual;
+ info->fbops->fb_fillrect(info, ®ion);
+ }
+
+ if (bh) {
+ region.dx = info->var.xoffset;
+ region.dy = info->var.yoffset + bs;
+ region.width = rs;
+ region.height = bh;
+ info->fbops->fb_fillrect(info, ®ion);
+ }
+}
+
+static void bit_cursor(struct vc_data *vc, struct fb_info *info,
+ struct display *p, int mode, int fg, int bg)
+{
+ struct fb_cursor cursor;
+ struct fbcon_ops *ops = (struct fbcon_ops *) info->fbcon_par;
+ unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
+ int w = (vc->vc_font.width + 7) >> 3, c;
+ int y = real_y(p, vc->vc_y);
+ int attribute, use_sw = (vc->vc_cursor_type & 0x10);
+ char *src;
+
+ cursor.set = 0;
+
+ c = scr_readw((u16 *) vc->vc_pos);
+ attribute = get_attribute(info, c);
+ src = vc->vc_font.data + ((c & charmask) * (w * vc->vc_font.height));
+
+ if (ops->cursor_state.image.data != src ||
+ ops->cursor_reset) {
+ ops->cursor_state.image.data = src;
+ cursor.set |= FB_CUR_SETIMAGE;
+ }
+
+ if (attribute) {
+ u8 *dst;
+
+ dst = kmalloc(w * vc->vc_font.height, GFP_ATOMIC);
+ if (!dst)
+ return;
+ if (ops->cursor_data)
+ kfree(ops->cursor_data);
+ ops->cursor_data = dst;
+ update_attr(dst, src, attribute, vc);
+ src = dst;
+ }
+
+ if (ops->cursor_state.image.fg_color != fg ||
+ ops->cursor_state.image.bg_color != bg ||
+ ops->cursor_reset) {
+ ops->cursor_state.image.fg_color = fg;
+ ops->cursor_state.image.bg_color = bg;
+ cursor.set |= FB_CUR_SETCMAP;
+ }
+
+ if ((ops->cursor_state.image.dx != (vc->vc_font.width * vc->vc_x)) ||
+ (ops->cursor_state.image.dy != (vc->vc_font.height * y)) ||
+ ops->cursor_reset) {
+ ops->cursor_state.image.dx = vc->vc_font.width * vc->vc_x;
+ ops->cursor_state.image.dy = vc->vc_font.height * y;
+ cursor.set |= FB_CUR_SETPOS;
+ }
+
+ if (ops->cursor_state.image.height != vc->vc_font.height ||
+ ops->cursor_state.image.width != vc->vc_font.width ||
+ ops->cursor_reset) {
+ ops->cursor_state.image.height = vc->vc_font.height;
+ ops->cursor_state.image.width = vc->vc_font.width;
+ cursor.set |= FB_CUR_SETSIZE;
+ }
+
+ if (ops->cursor_state.hot.x || ops->cursor_state.hot.y ||
+ ops->cursor_reset) {
+ ops->cursor_state.hot.x = cursor.hot.y = 0;
+ cursor.set |= FB_CUR_SETHOT;
+ }
+
+ if (cursor.set & FB_CUR_SETSIZE ||
+ vc->vc_cursor_type != p->cursor_shape ||
+ ops->cursor_state.mask == NULL ||
+ ops->cursor_reset) {
+ char *mask = kmalloc(w*vc->vc_font.height, GFP_ATOMIC);
+ int cur_height, size, i = 0;
+ u8 msk = 0xff;
+
+ if (!mask)
+ return;
+
+ if (ops->cursor_state.mask)
+ kfree(ops->cursor_state.mask);
+ ops->cursor_state.mask = mask;
+
+ p->cursor_shape = vc->vc_cursor_type;
+ cursor.set |= FB_CUR_SETSHAPE;
+
+ switch (p->cursor_shape & CUR_HWMASK) {
+ case CUR_NONE:
+ cur_height = 0;
+ break;
+ case CUR_UNDERLINE:
+ cur_height = (vc->vc_font.height < 10) ? 1 : 2;
+ break;
+ case CUR_LOWER_THIRD:
+ cur_height = vc->vc_font.height/3;
+ break;
+ case CUR_LOWER_HALF:
+ cur_height = vc->vc_font.height >> 1;
+ break;
+ case CUR_TWO_THIRDS:
+ cur_height = (vc->vc_font.height << 1)/3;
+ break;
+ case CUR_BLOCK:
+ default:
+ cur_height = vc->vc_font.height;
+ break;
+ }
+ size = (vc->vc_font.height - cur_height) * w;
+ while (size--)
+ mask[i++] = ~msk;
+ size = cur_height * w;
+ while (size--)
+ mask[i++] = msk;
+ }
+
+ switch (mode) {
+ case CM_ERASE:
+ ops->cursor_state.enable = 0;
+ break;
+ case CM_DRAW:
+ case CM_MOVE:
+ default:
+ ops->cursor_state.enable = (use_sw) ? 0 : 1;
+ break;
+ }
+
+ cursor.image.data = src;
+ cursor.image.fg_color = ops->cursor_state.image.fg_color;
+ cursor.image.bg_color = ops->cursor_state.image.bg_color;
+ cursor.image.dx = ops->cursor_state.image.dx;
+ cursor.image.dy = ops->cursor_state.image.dy;
+ cursor.image.height = ops->cursor_state.image.height;
+ cursor.image.width = ops->cursor_state.image.width;
+ cursor.hot.x = ops->cursor_state.hot.x;
+ cursor.hot.y = ops->cursor_state.hot.y;
+ cursor.mask = ops->cursor_state.mask;
+ cursor.enable = ops->cursor_state.enable;
+ cursor.image.depth = 1;
+ cursor.rop = ROP_XOR;
+
+ info->fbops->fb_cursor(info, &cursor);
+
+ ops->cursor_reset = 0;
+}
+
+void fbcon_set_bitops(struct fbcon_ops *ops)
+{
+ ops->bmove = bit_bmove;
+ ops->clear = bit_clear;
+ ops->putcs = bit_putcs;
+ ops->clear_margins = bit_clear_margins;
+ ops->cursor = bit_cursor;
+}
+
+EXPORT_SYMBOL(fbcon_set_bitops);
+
+MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>");
+MODULE_DESCRIPTION("Bit Blitting Operation");
+MODULE_LICENSE("GPL");
+
git://git.onelab.eu / linux-2.6.git / blobdiff