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1/*2 * linux/drivers/video/console/fbcon_ud.c -- Software Rotation - 180 degrees3 *4 * Copyright (C) 2005 Antonino Daplas <adaplas @pol.net>5 *6 * This file is subject to the terms and conditions of the GNU General Public7 * License. See the file COPYING in the main directory of this archive for8 * more details.9 */10 11#include <linux/module.h>12#include <linux/slab.h>13#include <linux/string.h>14#include <linux/fb.h>15#include <linux/vt_kern.h>16#include <linux/console.h>17#include <asm/types.h>18#include "fbcon.h"19#include "fbcon_rotate.h"20 21/*22 * Rotation 180 degrees23 */24 25static void ud_update_attr(u8 *dst, u8 *src, int attribute,26 struct vc_data *vc)27{28 int i, offset = (vc->vc_font.height < 10) ? 1 : 2;29 int width = (vc->vc_font.width + 7) >> 3;30 unsigned int cellsize = vc->vc_font.height * width;31 u8 c;32 33 offset = offset * width;34 35 for (i = 0; i < cellsize; i++) {36 c = src[i];37 if (attribute & FBCON_ATTRIBUTE_UNDERLINE && i < offset)38 c = 0xff;39 if (attribute & FBCON_ATTRIBUTE_BOLD)40 c |= c << 1;41 if (attribute & FBCON_ATTRIBUTE_REVERSE)42 c = ~c;43 dst[i] = c;44 }45}46 47 48static void ud_bmove(struct vc_data *vc, struct fb_info *info, int sy,49 int sx, int dy, int dx, int height, int width)50{51 struct fbcon_ops *ops = info->fbcon_par;52 struct fb_copyarea area;53 u32 vyres = GETVYRES(ops->p, info);54 u32 vxres = GETVXRES(ops->p, info);55 56 area.sy = vyres - ((sy + height) * vc->vc_font.height);57 area.sx = vxres - ((sx + width) * vc->vc_font.width);58 area.dy = vyres - ((dy + height) * vc->vc_font.height);59 area.dx = vxres - ((dx + width) * vc->vc_font.width);60 area.height = height * vc->vc_font.height;61 area.width = width * vc->vc_font.width;62 63 info->fbops->fb_copyarea(info, &area);64}65 66static void ud_clear(struct vc_data *vc, struct fb_info *info, int sy,67 int sx, int height, int width)68{69 struct fbcon_ops *ops = info->fbcon_par;70 struct fb_fillrect region;71 int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;72 u32 vyres = GETVYRES(ops->p, info);73 u32 vxres = GETVXRES(ops->p, info);74 75 region.color = attr_bgcol_ec(bgshift,vc,info);76 region.dy = vyres - ((sy + height) * vc->vc_font.height);77 region.dx = vxres - ((sx + width) * vc->vc_font.width);78 region.width = width * vc->vc_font.width;79 region.height = height * vc->vc_font.height;80 region.rop = ROP_COPY;81 82 info->fbops->fb_fillrect(info, ®ion);83}84 85static inline void ud_putcs_aligned(struct vc_data *vc, struct fb_info *info,86 const u16 *s, u32 attr, u32 cnt,87 u32 d_pitch, u32 s_pitch, u32 cellsize,88 struct fb_image *image, u8 *buf, u8 *dst)89{90 struct fbcon_ops *ops = info->fbcon_par;91 u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;92 u32 idx = vc->vc_font.width >> 3;93 u8 *src;94 95 while (cnt--) {96 src = ops->fontbuffer + (scr_readw(s--) & charmask)*cellsize;97 98 if (attr) {99 ud_update_attr(buf, src, attr, vc);100 src = buf;101 }102 103 if (likely(idx == 1))104 __fb_pad_aligned_buffer(dst, d_pitch, src, idx,105 image->height);106 else107 fb_pad_aligned_buffer(dst, d_pitch, src, idx,108 image->height);109 110 dst += s_pitch;111 }112 113 info->fbops->fb_imageblit(info, image);114}115 116static inline void ud_putcs_unaligned(struct vc_data *vc,117 struct fb_info *info, const u16 *s,118 u32 attr, u32 cnt, u32 d_pitch,119 u32 s_pitch, u32 cellsize,120 struct fb_image *image, u8 *buf,121 u8 *dst)122{123 struct fbcon_ops *ops = info->fbcon_par;124 u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;125 u32 shift_low = 0, mod = vc->vc_font.width % 8;126 u32 shift_high = 8;127 u32 idx = vc->vc_font.width >> 3;128 u8 *src;129 130 while (cnt--) {131 src = ops->fontbuffer + (scr_readw(s--) & charmask)*cellsize;132 133 if (attr) {134 ud_update_attr(buf, src, attr, vc);135 src = buf;136 }137 138 fb_pad_unaligned_buffer(dst, d_pitch, src, idx,139 image->height, shift_high,140 shift_low, mod);141 shift_low += mod;142 dst += (shift_low >= 8) ? s_pitch : s_pitch - 1;143 shift_low &= 7;144 shift_high = 8 - shift_low;145 }146 147 info->fbops->fb_imageblit(info, image);148 149}150 151static void ud_putcs(struct vc_data *vc, struct fb_info *info,152 const unsigned short *s, int count, int yy, int xx,153 int fg, int bg)154{155 struct fb_image image;156 struct fbcon_ops *ops = info->fbcon_par;157 u32 width = (vc->vc_font.width + 7)/8;158 u32 cellsize = width * vc->vc_font.height;159 u32 maxcnt = info->pixmap.size/cellsize;160 u32 scan_align = info->pixmap.scan_align - 1;161 u32 buf_align = info->pixmap.buf_align - 1;162 u32 mod = vc->vc_font.width % 8, cnt, pitch, size;163 u32 attribute = get_attribute(info, scr_readw(s));164 u8 *dst, *buf = NULL;165 u32 vyres = GETVYRES(ops->p, info);166 u32 vxres = GETVXRES(ops->p, info);167 168 if (!ops->fontbuffer)169 return;170 171 image.fg_color = fg;172 image.bg_color = bg;173 image.dy = vyres - ((yy * vc->vc_font.height) + vc->vc_font.height);174 image.dx = vxres - ((xx + count) * vc->vc_font.width);175 image.height = vc->vc_font.height;176 image.depth = 1;177 178 if (attribute) {179 buf = kmalloc(cellsize, GFP_KERNEL);180 if (!buf)181 return;182 }183 184 s += count - 1;185 186 while (count) {187 if (count > maxcnt)188 cnt = maxcnt;189 else190 cnt = count;191 192 image.width = vc->vc_font.width * cnt;193 pitch = ((image.width + 7) >> 3) + scan_align;194 pitch &= ~scan_align;195 size = pitch * image.height + buf_align;196 size &= ~buf_align;197 dst = fb_get_buffer_offset(info, &info->pixmap, size);198 image.data = dst;199 200 if (!mod)201 ud_putcs_aligned(vc, info, s, attribute, cnt, pitch,202 width, cellsize, &image, buf, dst);203 else204 ud_putcs_unaligned(vc, info, s, attribute, cnt, pitch,205 width, cellsize, &image,206 buf, dst);207 208 image.dx += image.width;209 count -= cnt;210 s -= cnt;211 xx += cnt;212 }213 214 /* buf is always NULL except when in monochrome mode, so in this case215 it's a gain to check buf against NULL even though kfree() handles216 NULL pointers just fine */217 if (unlikely(buf))218 kfree(buf);219 220}221 222static void ud_clear_margins(struct vc_data *vc, struct fb_info *info,223 int color, int bottom_only)224{225 unsigned int cw = vc->vc_font.width;226 unsigned int ch = vc->vc_font.height;227 unsigned int rw = info->var.xres - (vc->vc_cols*cw);228 unsigned int bh = info->var.yres - (vc->vc_rows*ch);229 struct fb_fillrect region;230 231 region.color = color;232 region.rop = ROP_COPY;233 234 if ((int) rw > 0 && !bottom_only) {235 region.dy = 0;236 region.dx = info->var.xoffset;237 region.width = rw;238 region.height = info->var.yres_virtual;239 info->fbops->fb_fillrect(info, ®ion);240 }241 242 if ((int) bh > 0) {243 region.dy = info->var.yoffset;244 region.dx = info->var.xoffset;245 region.height = bh;246 region.width = info->var.xres;247 info->fbops->fb_fillrect(info, ®ion);248 }249}250 251static void ud_cursor(struct vc_data *vc, struct fb_info *info, bool enable,252 int fg, int bg)253{254 struct fb_cursor cursor;255 struct fbcon_ops *ops = info->fbcon_par;256 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;257 int w = (vc->vc_font.width + 7) >> 3, c;258 int y = real_y(ops->p, vc->state.y);259 int attribute, use_sw = vc->vc_cursor_type & CUR_SW;260 int err = 1, dx, dy;261 char *src;262 u32 vyres = GETVYRES(ops->p, info);263 u32 vxres = GETVXRES(ops->p, info);264 265 if (!ops->fontbuffer)266 return;267 268 cursor.set = 0;269 270 c = scr_readw((u16 *) vc->vc_pos);271 attribute = get_attribute(info, c);272 src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.height));273 274 if (ops->cursor_state.image.data != src ||275 ops->cursor_reset) {276 ops->cursor_state.image.data = src;277 cursor.set |= FB_CUR_SETIMAGE;278 }279 280 if (attribute) {281 u8 *dst;282 283 dst = kmalloc_array(w, vc->vc_font.height, GFP_ATOMIC);284 if (!dst)285 return;286 kfree(ops->cursor_data);287 ops->cursor_data = dst;288 ud_update_attr(dst, src, attribute, vc);289 src = dst;290 }291 292 if (ops->cursor_state.image.fg_color != fg ||293 ops->cursor_state.image.bg_color != bg ||294 ops->cursor_reset) {295 ops->cursor_state.image.fg_color = fg;296 ops->cursor_state.image.bg_color = bg;297 cursor.set |= FB_CUR_SETCMAP;298 }299 300 if (ops->cursor_state.image.height != vc->vc_font.height ||301 ops->cursor_state.image.width != vc->vc_font.width ||302 ops->cursor_reset) {303 ops->cursor_state.image.height = vc->vc_font.height;304 ops->cursor_state.image.width = vc->vc_font.width;305 cursor.set |= FB_CUR_SETSIZE;306 }307 308 dy = vyres - ((y * vc->vc_font.height) + vc->vc_font.height);309 dx = vxres - ((vc->state.x * vc->vc_font.width) + vc->vc_font.width);310 311 if (ops->cursor_state.image.dx != dx ||312 ops->cursor_state.image.dy != dy ||313 ops->cursor_reset) {314 ops->cursor_state.image.dx = dx;315 ops->cursor_state.image.dy = dy;316 cursor.set |= FB_CUR_SETPOS;317 }318 319 if (ops->cursor_state.hot.x || ops->cursor_state.hot.y ||320 ops->cursor_reset) {321 ops->cursor_state.hot.x = cursor.hot.y = 0;322 cursor.set |= FB_CUR_SETHOT;323 }324 325 if (cursor.set & FB_CUR_SETSIZE ||326 vc->vc_cursor_type != ops->p->cursor_shape ||327 ops->cursor_state.mask == NULL ||328 ops->cursor_reset) {329 char *mask = kmalloc_array(w, vc->vc_font.height, GFP_ATOMIC);330 int cur_height, size, i = 0;331 u8 msk = 0xff;332 333 if (!mask)334 return;335 336 kfree(ops->cursor_state.mask);337 ops->cursor_state.mask = mask;338 339 ops->p->cursor_shape = vc->vc_cursor_type;340 cursor.set |= FB_CUR_SETSHAPE;341 342 switch (CUR_SIZE(ops->p->cursor_shape)) {343 case CUR_NONE:344 cur_height = 0;345 break;346 case CUR_UNDERLINE:347 cur_height = (vc->vc_font.height < 10) ? 1 : 2;348 break;349 case CUR_LOWER_THIRD:350 cur_height = vc->vc_font.height/3;351 break;352 case CUR_LOWER_HALF:353 cur_height = vc->vc_font.height >> 1;354 break;355 case CUR_TWO_THIRDS:356 cur_height = (vc->vc_font.height << 1)/3;357 break;358 case CUR_BLOCK:359 default:360 cur_height = vc->vc_font.height;361 break;362 }363 364 size = cur_height * w;365 366 while (size--)367 mask[i++] = msk;368 369 size = (vc->vc_font.height - cur_height) * w;370 371 while (size--)372 mask[i++] = ~msk;373 }374 375 ops->cursor_state.enable = enable && !use_sw;376 377 cursor.image.data = src;378 cursor.image.fg_color = ops->cursor_state.image.fg_color;379 cursor.image.bg_color = ops->cursor_state.image.bg_color;380 cursor.image.dx = ops->cursor_state.image.dx;381 cursor.image.dy = ops->cursor_state.image.dy;382 cursor.image.height = ops->cursor_state.image.height;383 cursor.image.width = ops->cursor_state.image.width;384 cursor.hot.x = ops->cursor_state.hot.x;385 cursor.hot.y = ops->cursor_state.hot.y;386 cursor.mask = ops->cursor_state.mask;387 cursor.enable = ops->cursor_state.enable;388 cursor.image.depth = 1;389 cursor.rop = ROP_XOR;390 391 if (info->fbops->fb_cursor)392 err = info->fbops->fb_cursor(info, &cursor);393 394 if (err)395 soft_cursor(info, &cursor);396 397 ops->cursor_reset = 0;398}399 400static int ud_update_start(struct fb_info *info)401{402 struct fbcon_ops *ops = info->fbcon_par;403 int xoffset, yoffset;404 u32 vyres = GETVYRES(ops->p, info);405 u32 vxres = GETVXRES(ops->p, info);406 int err;407 408 xoffset = vxres - info->var.xres - ops->var.xoffset;409 yoffset = vyres - info->var.yres - ops->var.yoffset;410 if (yoffset < 0)411 yoffset += vyres;412 ops->var.xoffset = xoffset;413 ops->var.yoffset = yoffset;414 err = fb_pan_display(info, &ops->var);415 ops->var.xoffset = info->var.xoffset;416 ops->var.yoffset = info->var.yoffset;417 ops->var.vmode = info->var.vmode;418 return err;419}420 421void fbcon_rotate_ud(struct fbcon_ops *ops)422{423 ops->bmove = ud_bmove;424 ops->clear = ud_clear;425 ops->putcs = ud_putcs;426 ops->clear_margins = ud_clear_margins;427 ops->cursor = ud_cursor;428 ops->update_start = ud_update_start;429}430