| /* |
| * linux/drivers/video/afb.c -- Low level frame buffer operations for |
| * bitplanes à la Amiga |
| * |
| * Created 5 Apr 1997 by Geert Uytterhoeven |
| * |
| * 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/module.h> |
| #include <linux/tty.h> |
| #include <linux/console.h> |
| #include <linux/string.h> |
| #include <linux/fb.h> |
| |
| #include <video/fbcon.h> |
| #include <video/fbcon-afb.h> |
| |
| |
| /* |
| * Bitplanes à la Amiga |
| */ |
| |
| static u8 expand_table[1024] = { |
| /* bg = fg = 0 */ |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| /* bg = 0, fg = 1 */ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
| 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, |
| 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, |
| 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, |
| 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, |
| 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, |
| 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, |
| 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, |
| 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, |
| 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, |
| 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, |
| 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, |
| 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, |
| 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, |
| 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, |
| 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, |
| 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, |
| 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, |
| 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, |
| 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, |
| 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, |
| 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, |
| 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, |
| 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, |
| 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, |
| 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, |
| 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, |
| 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, |
| /* bg = 1, fg = 0 */ |
| 0xff, 0xfe, 0xfd, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8, |
| 0xf7, 0xf6, 0xf5, 0xf4, 0xf3, 0xf2, 0xf1, 0xf0, |
| 0xef, 0xee, 0xed, 0xec, 0xeb, 0xea, 0xe9, 0xe8, |
| 0xe7, 0xe6, 0xe5, 0xe4, 0xe3, 0xe2, 0xe1, 0xe0, |
| 0xdf, 0xde, 0xdd, 0xdc, 0xdb, 0xda, 0xd9, 0xd8, |
| 0xd7, 0xd6, 0xd5, 0xd4, 0xd3, 0xd2, 0xd1, 0xd0, |
| 0xcf, 0xce, 0xcd, 0xcc, 0xcb, 0xca, 0xc9, 0xc8, |
| 0xc7, 0xc6, 0xc5, 0xc4, 0xc3, 0xc2, 0xc1, 0xc0, |
| 0xbf, 0xbe, 0xbd, 0xbc, 0xbb, 0xba, 0xb9, 0xb8, |
| 0xb7, 0xb6, 0xb5, 0xb4, 0xb3, 0xb2, 0xb1, 0xb0, |
| 0xaf, 0xae, 0xad, 0xac, 0xab, 0xaa, 0xa9, 0xa8, |
| 0xa7, 0xa6, 0xa5, 0xa4, 0xa3, 0xa2, 0xa1, 0xa0, |
| 0x9f, 0x9e, 0x9d, 0x9c, 0x9b, 0x9a, 0x99, 0x98, |
| 0x97, 0x96, 0x95, 0x94, 0x93, 0x92, 0x91, 0x90, |
| 0x8f, 0x8e, 0x8d, 0x8c, 0x8b, 0x8a, 0x89, 0x88, |
| 0x87, 0x86, 0x85, 0x84, 0x83, 0x82, 0x81, 0x80, |
| 0x7f, 0x7e, 0x7d, 0x7c, 0x7b, 0x7a, 0x79, 0x78, |
| 0x77, 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x70, |
| 0x6f, 0x6e, 0x6d, 0x6c, 0x6b, 0x6a, 0x69, 0x68, |
| 0x67, 0x66, 0x65, 0x64, 0x63, 0x62, 0x61, 0x60, |
| 0x5f, 0x5e, 0x5d, 0x5c, 0x5b, 0x5a, 0x59, 0x58, |
| 0x57, 0x56, 0x55, 0x54, 0x53, 0x52, 0x51, 0x50, |
| 0x4f, 0x4e, 0x4d, 0x4c, 0x4b, 0x4a, 0x49, 0x48, |
| 0x47, 0x46, 0x45, 0x44, 0x43, 0x42, 0x41, 0x40, |
| 0x3f, 0x3e, 0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38, |
| 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30, |
| 0x2f, 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, |
| 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0x20, |
| 0x1f, 0x1e, 0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18, |
| 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10, |
| 0x0f, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, |
| 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00, |
| /* bg = fg = 1 */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff |
| }; |
| |
| void fbcon_afb_setup(struct display *p) |
| { |
| if (p->line_length) |
| p->next_line = p->line_length; |
| else |
| p->next_line = p->var.xres_virtual>>3; |
| p->next_plane = p->var.yres_virtual*p->next_line; |
| } |
| |
| void fbcon_afb_bmove(struct display *p, int sy, int sx, int dy, int dx, |
| int height, int width) |
| { |
| u8 *src, *dest, *src0, *dest0; |
| u_short i, j; |
| |
| if (sx == 0 && dx == 0 && width == p->next_line) { |
| src = p->screen_base+sy*fontheight(p)*width; |
| dest = p->screen_base+dy*fontheight(p)*width; |
| i = p->var.bits_per_pixel; |
| do { |
| fb_memmove(dest, src, height*fontheight(p)*width); |
| src += p->next_plane; |
| dest += p->next_plane; |
| } while (--i); |
| } else if (dy <= sy) { |
| src0 = p->screen_base+sy*fontheight(p)*p->next_line+sx; |
| dest0 = p->screen_base+dy*fontheight(p)*p->next_line+dx; |
| i = p->var.bits_per_pixel; |
| do { |
| src = src0; |
| dest = dest0; |
| j = height*fontheight(p); |
| do { |
| fb_memmove(dest, src, width); |
| src += p->next_line; |
| dest += p->next_line; |
| } while (--j); |
| src0 += p->next_plane; |
| dest0 += p->next_plane; |
| } while (--i); |
| } else { |
| src0 = p->screen_base+(sy+height)*fontheight(p)*p->next_line+sx; |
| dest0 = p->screen_base+(dy+height)*fontheight(p)*p->next_line+dx; |
| i = p->var.bits_per_pixel; |
| do { |
| src = src0; |
| dest = dest0; |
| j = height*fontheight(p); |
| do { |
| src -= p->next_line; |
| dest -= p->next_line; |
| fb_memmove(dest, src, width); |
| } while (--j); |
| src0 += p->next_plane; |
| dest0 += p->next_plane; |
| } while (--i); |
| } |
| } |
| |
| void fbcon_afb_clear(struct vc_data *conp, struct display *p, int sy, int sx, |
| int height, int width) |
| { |
| u8 *dest, *dest0; |
| u_short i, j; |
| int bg; |
| |
| dest0 = p->screen_base+sy*fontheight(p)*p->next_line+sx; |
| |
| bg = attr_bgcol_ec(p,conp); |
| i = p->var.bits_per_pixel; |
| do { |
| dest = dest0; |
| j = height*fontheight(p); |
| do { |
| if (bg & 1) |
| fb_memset255(dest, width); |
| else |
| fb_memclear(dest, width); |
| dest += p->next_line; |
| } while (--j); |
| bg >>= 1; |
| dest0 += p->next_plane; |
| } while (--i); |
| } |
| |
| void fbcon_afb_putc(struct vc_data *conp, struct display *p, int c, int yy, |
| int xx) |
| { |
| u8 *dest, *dest0, *cdat, *cdat0, *expand; |
| u_short i, j; |
| int fg, bg; |
| |
| dest0 = p->screen_base+yy*fontheight(p)*p->next_line+xx; |
| cdat0 = p->fontdata+(c&p->charmask)*fontheight(p); |
| fg = attr_fgcol(p,c); |
| bg = attr_bgcol(p,c); |
| |
| i = p->var.bits_per_pixel; |
| do { |
| dest = dest0; |
| cdat = cdat0; |
| expand = expand_table; |
| if (bg & 1) |
| expand += 512; |
| if (fg & 1) |
| expand += 256; |
| j = fontheight(p); |
| do { |
| *dest = expand[*cdat++]; |
| dest += p->next_line; |
| } while (--j); |
| bg >>= 1; |
| fg >>= 1; |
| dest0 += p->next_plane; |
| } while (--i); |
| } |
| |
| /* |
| * I've split the console character loop in two parts |
| * (cfr. fbcon_putcs_ilbm()) |
| */ |
| |
| void fbcon_afb_putcs(struct vc_data *conp, struct display *p, |
| const unsigned short *s, int count, int yy, int xx) |
| { |
| u8 *dest, *dest0, *dest1, *expand; |
| u8 *cdat1, *cdat2, *cdat3, *cdat4, *cdat10, *cdat20, *cdat30, *cdat40; |
| u_short i, j; |
| u16 c1, c2, c3, c4; |
| int fg0, bg0, fg, bg; |
| |
| dest0 = p->screen_base+yy*fontheight(p)*p->next_line+xx; |
| c1 = scr_readw(s); |
| fg0 = attr_fgcol(p, c1); |
| bg0 = attr_bgcol(p, c1); |
| |
| while (count--) |
| if (xx&3 || count < 3) { /* Slow version */ |
| c1 = scr_readw(s++) & p->charmask; |
| dest1 = dest0++; |
| xx++; |
| |
| cdat10 = p->fontdata+c1*fontheight(p); |
| fg = fg0; |
| bg = bg0; |
| |
| i = p->var.bits_per_pixel; |
| do { |
| dest = dest1; |
| cdat1 = cdat10; |
| expand = expand_table; |
| if (bg & 1) |
| expand += 512; |
| if (fg & 1) |
| expand += 256; |
| j = fontheight(p); |
| do { |
| *dest = expand[*cdat1++]; |
| dest += p->next_line; |
| } while (--j); |
| bg >>= 1; |
| fg >>= 1; |
| dest1 += p->next_plane; |
| } while (--i); |
| } else { /* Fast version */ |
| c1 = scr_readw(&s[0]) & p->charmask; |
| c2 = scr_readw(&s[1]) & p->charmask; |
| c3 = scr_readw(&s[2]) & p->charmask; |
| c4 = scr_readw(&s[3]) & p->charmask; |
| |
| dest1 = dest0; |
| cdat10 = p->fontdata+c1*fontheight(p); |
| cdat20 = p->fontdata+c2*fontheight(p); |
| cdat30 = p->fontdata+c3*fontheight(p); |
| cdat40 = p->fontdata+c4*fontheight(p); |
| fg = fg0; |
| bg = bg0; |
| |
| i = p->var.bits_per_pixel; |
| do { |
| dest = dest1; |
| cdat1 = cdat10; |
| cdat2 = cdat20; |
| cdat3 = cdat30; |
| cdat4 = cdat40; |
| expand = expand_table; |
| if (bg & 1) |
| expand += 512; |
| if (fg & 1) |
| expand += 256; |
| j = fontheight(p); |
| do { |
| #if defined(__BIG_ENDIAN) |
| *(u32 *)dest = expand[*cdat1++]<<24 | |
| expand[*cdat2++]<<16 | |
| expand[*cdat3++]<<8 | |
| expand[*cdat4++]; |
| #elif defined(__LITTLE_ENDIAN) |
| *(u32 *)dest = expand[*cdat1++] | |
| expand[*cdat2++]<<8 | |
| expand[*cdat3++]<<16 | |
| expand[*cdat4++]<<24; |
| #else |
| #error FIXME: No endianness?? |
| #endif |
| dest += p->next_line; |
| } while (--j); |
| bg >>= 1; |
| fg >>= 1; |
| dest1 += p->next_plane; |
| } while (--i); |
| s += 4; |
| dest0 += 4; |
| xx += 4; |
| count -= 3; |
| } |
| } |
| |
| void fbcon_afb_revc(struct display *p, int xx, int yy) |
| { |
| u8 *dest, *dest0; |
| u_short i, j; |
| int mask; |
| |
| dest0 = p->screen_base+yy*fontheight(p)*p->next_line+xx; |
| mask = p->fgcol ^ p->bgcol; |
| |
| /* |
| * This should really obey the individual character's |
| * background and foreground colors instead of simply |
| * inverting. |
| */ |
| |
| i = p->var.bits_per_pixel; |
| do { |
| if (mask & 1) { |
| dest = dest0; |
| j = fontheight(p); |
| do { |
| *dest = ~*dest; |
| dest += p->next_line; |
| } while (--j); |
| } |
| mask >>= 1; |
| dest0 += p->next_plane; |
| } while (--i); |
| } |
| |
| |
| /* |
| * `switch' for the low level operations |
| */ |
| |
| struct display_switch fbcon_afb = { |
| setup: fbcon_afb_setup, |
| bmove: fbcon_afb_bmove, |
| clear: fbcon_afb_clear, |
| putc: fbcon_afb_putc, |
| putcs: fbcon_afb_putcs, |
| revc: fbcon_afb_revc, |
| fontwidthmask: FONTWIDTH(8) |
| }; |
| |
| |
| #ifdef MODULE |
| MODULE_LICENSE("GPL"); |
| |
| int init_module(void) |
| { |
| return 0; |
| } |
| |
| void cleanup_module(void) |
| {} |
| #endif /* MODULE */ |
| |
| |
| /* |
| * Visible symbols for modules |
| */ |
| |
| EXPORT_SYMBOL(fbcon_afb); |
| EXPORT_SYMBOL(fbcon_afb_setup); |
| EXPORT_SYMBOL(fbcon_afb_bmove); |
| EXPORT_SYMBOL(fbcon_afb_clear); |
| EXPORT_SYMBOL(fbcon_afb_putc); |
| EXPORT_SYMBOL(fbcon_afb_putcs); |
| EXPORT_SYMBOL(fbcon_afb_revc); |