| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds (pre-git) | 2014 | 88.84% | 10 | 32.26% |
| Linus Torvalds | 76 | 3.35% | 2 | 6.45% |
| Jiri Slaby | 61 | 2.69% | 7 | 22.58% |
| James Simmons | 50 | 2.21% | 3 | 9.68% |
| Andrew Morton | 16 | 0.71% | 3 | 9.68% |
| Wang YanQing | 15 | 0.66% | 1 | 3.23% |
| Roland Kletzing | 15 | 0.66% | 1 | 3.23% |
| Jan Engelhardt | 8 | 0.35% | 1 | 3.23% |
| Björn Helgaas | 6 | 0.26% | 1 | 3.23% |
| Thomas Gleixner | 4 | 0.18% | 1 | 3.23% |
| Antonino A. Daplas | 2 | 0.09% | 1 | 3.23% |
| Total | 2267 | 31 |
/* * linux/drivers/video/mdacon.c -- Low level MDA based console driver * * (c) 1998 Andrew Apted <ajapted@netspace.net.au> * * including portions (c) 1995-1998 Patrick Caulfield. * * slight improvements (c) 2000 Edward Betts <edward@debian.org> * * This file is based on the VGA console driver (vgacon.c): * * Created 28 Sep 1997 by Geert Uytterhoeven * * Rewritten by Martin Mares <mj@ucw.cz>, July 1998 * * and on the old console.c, vga.c and vesa_blank.c drivers: * * Copyright (C) 1991, 1992 Linus Torvalds * 1995 Jay Estabrook * * 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. * * Changelog: * Paul G. (03/2001) Fix mdacon= boot prompt to use __setup(). */ #include <linux/types.h> #include <linux/fs.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/console.h> #include <linux/string.h> #include <linux/kd.h> #include <linux/vt_kern.h> #include <linux/vt_buffer.h> #include <linux/selection.h> #include <linux/spinlock.h> #include <linux/ioport.h> #include <linux/delay.h> #include <linux/init.h> #include <asm/io.h> #include <asm/vga.h> static DEFINE_SPINLOCK(mda_lock); /* description of the hardware layout */ static u16 *mda_vram_base; /* Base of video memory */ static unsigned long mda_vram_len; /* Size of video memory */ static unsigned int mda_num_columns; /* Number of text columns */ static unsigned int mda_num_lines; /* Number of text lines */ static unsigned int mda_index_port; /* Register select port */ static unsigned int mda_value_port; /* Register value port */ static unsigned int mda_mode_port; /* Mode control port */ static unsigned int mda_status_port; /* Status and Config port */ static unsigned int mda_gfx_port; /* Graphics control port */ /* current hardware state */ static int mda_cursor_loc=-1; static int mda_cursor_size_from=-1; static int mda_cursor_size_to=-1; static enum { TYPE_MDA, TYPE_HERC, TYPE_HERCPLUS, TYPE_HERCCOLOR } mda_type; static char *mda_type_name; /* console information */ static int mda_first_vc = 13; static int mda_last_vc = 16; static struct vc_data *mda_display_fg = NULL; module_param(mda_first_vc, int, 0); MODULE_PARM_DESC(mda_first_vc, "First virtual console. Default: 13"); module_param(mda_last_vc, int, 0); MODULE_PARM_DESC(mda_last_vc, "Last virtual console. Default: 16"); /* MDA register values */ #define MDA_CURSOR_BLINKING 0x00 #define MDA_CURSOR_OFF 0x20 #define MDA_CURSOR_SLOWBLINK 0x60 #define MDA_MODE_GRAPHICS 0x02 #define MDA_MODE_VIDEO_EN 0x08 #define MDA_MODE_BLINK_EN 0x20 #define MDA_MODE_GFX_PAGE1 0x80 #define MDA_STATUS_HSYNC 0x01 #define MDA_STATUS_VSYNC 0x80 #define MDA_STATUS_VIDEO 0x08 #define MDA_CONFIG_COL132 0x08 #define MDA_GFX_MODE_EN 0x01 #define MDA_GFX_PAGE_EN 0x02 /* * MDA could easily be classified as "pre-dinosaur hardware". */ static void write_mda_b(unsigned int val, unsigned char reg) { unsigned long flags; spin_lock_irqsave(&mda_lock, flags); outb_p(reg, mda_index_port); outb_p(val, mda_value_port); spin_unlock_irqrestore(&mda_lock, flags); } static void write_mda_w(unsigned int val, unsigned char reg) { unsigned long flags; spin_lock_irqsave(&mda_lock, flags); outb_p(reg, mda_index_port); outb_p(val >> 8, mda_value_port); outb_p(reg+1, mda_index_port); outb_p(val & 0xff, mda_value_port); spin_unlock_irqrestore(&mda_lock, flags); } #ifdef TEST_MDA_B static int test_mda_b(unsigned char val, unsigned char reg) { unsigned long flags; spin_lock_irqsave(&mda_lock, flags); outb_p(reg, mda_index_port); outb (val, mda_value_port); udelay(20); val = (inb_p(mda_value_port) == val); spin_unlock_irqrestore(&mda_lock, flags); return val; } #endif static inline void mda_set_cursor(unsigned int location) { if (mda_cursor_loc == location) return; write_mda_w(location >> 1, 0x0e); mda_cursor_loc = location; } static inline void mda_set_cursor_size(int from, int to) { if (mda_cursor_size_from==from && mda_cursor_size_to==to) return; if (from > to) { write_mda_b(MDA_CURSOR_OFF, 0x0a); /* disable cursor */ } else { write_mda_b(from, 0x0a); /* cursor start */ write_mda_b(to, 0x0b); /* cursor end */ } mda_cursor_size_from = from; mda_cursor_size_to = to; } #ifndef MODULE static int __init mdacon_setup(char *str) { /* command line format: mdacon=<first>,<last> */ int ints[3]; str = get_options(str, ARRAY_SIZE(ints), ints); if (ints[0] < 2) return 0; if (ints[1] < 1 || ints[1] > MAX_NR_CONSOLES || ints[2] < 1 || ints[2] > MAX_NR_CONSOLES) return 0; mda_first_vc = ints[1]; mda_last_vc = ints[2]; return 1; } __setup("mdacon=", mdacon_setup); #endif static int mda_detect(void) { int count=0; u16 *p, p_save; u16 *q, q_save; /* do a memory check */ p = mda_vram_base; q = mda_vram_base + 0x01000 / 2; p_save = scr_readw(p); q_save = scr_readw(q); scr_writew(0xAA55, p); if (scr_readw(p) == 0xAA55) count++; scr_writew(0x55AA, p); if (scr_readw(p) == 0x55AA) count++; scr_writew(p_save, p); if (count != 2) { return 0; } /* check if we have 4K or 8K */ scr_writew(0xA55A, q); scr_writew(0x0000, p); if (scr_readw(q) == 0xA55A) count++; scr_writew(0x5AA5, q); scr_writew(0x0000, p); if (scr_readw(q) == 0x5AA5) count++; scr_writew(p_save, p); scr_writew(q_save, q); if (count == 4) { mda_vram_len = 0x02000; } /* Ok, there is definitely a card registering at the correct * memory location, so now we do an I/O port test. */ #ifdef TEST_MDA_B /* Edward: These two mess `tests' mess up my cursor on bootup */ /* cursor low register */ if (!test_mda_b(0x66, 0x0f)) return 0; /* cursor low register */ if (!test_mda_b(0x99, 0x0f)) return 0; #endif /* See if the card is a Hercules, by checking whether the vsync * bit of the status register is changing. This test lasts for * approximately 1/10th of a second. */ p_save = q_save = inb_p(mda_status_port) & MDA_STATUS_VSYNC; for (count = 0; count < 50000 && p_save == q_save; count++) { q_save = inb(mda_status_port) & MDA_STATUS_VSYNC; udelay(2); } if (p_save != q_save) { switch (inb_p(mda_status_port) & 0x70) { case 0x10: mda_type = TYPE_HERCPLUS; mda_type_name = "HerculesPlus"; break; case 0x50: mda_type = TYPE_HERCCOLOR; mda_type_name = "HerculesColor"; break; default: mda_type = TYPE_HERC; mda_type_name = "Hercules"; break; } } return 1; } static void mda_initialize(void) { write_mda_b(97, 0x00); /* horizontal total */ write_mda_b(80, 0x01); /* horizontal displayed */ write_mda_b(82, 0x02); /* horizontal sync pos */ write_mda_b(15, 0x03); /* horizontal sync width */ write_mda_b(25, 0x04); /* vertical total */ write_mda_b(6, 0x05); /* vertical total adjust */ write_mda_b(25, 0x06); /* vertical displayed */ write_mda_b(25, 0x07); /* vertical sync pos */ write_mda_b(2, 0x08); /* interlace mode */ write_mda_b(13, 0x09); /* maximum scanline */ write_mda_b(12, 0x0a); /* cursor start */ write_mda_b(13, 0x0b); /* cursor end */ write_mda_w(0x0000, 0x0c); /* start address */ write_mda_w(0x0000, 0x0e); /* cursor location */ outb_p(MDA_MODE_VIDEO_EN | MDA_MODE_BLINK_EN, mda_mode_port); outb_p(0x00, mda_status_port); outb_p(0x00, mda_gfx_port); } static const char *mdacon_startup(void) { mda_num_columns = 80; mda_num_lines = 25; mda_vram_len = 0x01000; mda_vram_base = (u16 *)VGA_MAP_MEM(0xb0000, mda_vram_len); mda_index_port = 0x3b4; mda_value_port = 0x3b5; mda_mode_port = 0x3b8; mda_status_port = 0x3ba; mda_gfx_port = 0x3bf; mda_type = TYPE_MDA; mda_type_name = "MDA"; if (! mda_detect()) { printk("mdacon: MDA card not detected.\n"); return NULL; } if (mda_type != TYPE_MDA) { mda_initialize(); } /* cursor looks ugly during boot-up, so turn it off */ mda_set_cursor(mda_vram_len - 1); printk("mdacon: %s with %ldK of memory detected.\n", mda_type_name, mda_vram_len/1024); return "MDA-2"; } static void mdacon_init(struct vc_data *c, int init) { c->vc_complement_mask = 0x0800; /* reverse video */ c->vc_display_fg = &mda_display_fg; if (init) { c->vc_cols = mda_num_columns; c->vc_rows = mda_num_lines; } else vc_resize(c, mda_num_columns, mda_num_lines); /* make the first MDA console visible */ if (mda_display_fg == NULL) mda_display_fg = c; } static void mdacon_deinit(struct vc_data *c) { /* con_set_default_unimap(c->vc_num); */ if (mda_display_fg == c) mda_display_fg = NULL; } static inline u16 mda_convert_attr(u16 ch) { u16 attr = 0x0700; /* Underline and reverse-video are mutually exclusive on MDA. * Since reverse-video is used for cursors and selected areas, * it takes precedence. */ if (ch & 0x0800) attr = 0x7000; /* reverse */ else if (ch & 0x0400) attr = 0x0100; /* underline */ return ((ch & 0x0200) << 2) | /* intensity */ (ch & 0x8000) | /* blink */ (ch & 0x00ff) | attr; } static u8 mdacon_build_attr(struct vc_data *c, u8 color, enum vc_intensity intensity, bool blink, bool underline, bool reverse, bool italic) { /* The attribute is just a bit vector: * * Bit 0..1 : intensity (0..2) * Bit 2 : underline * Bit 3 : reverse * Bit 7 : blink */ return (intensity & VCI_MASK) | (underline << 2) | (reverse << 3) | (italic << 4) | (blink << 7); } static void mdacon_invert_region(struct vc_data *c, u16 *p, int count) { for (; count > 0; count--) { scr_writew(scr_readw(p) ^ 0x0800, p); p++; } } static inline u16 *mda_addr(unsigned int x, unsigned int y) { return mda_vram_base + y * mda_num_columns + x; } static void mdacon_putc(struct vc_data *c, int ch, int y, int x) { scr_writew(mda_convert_attr(ch), mda_addr(x, y)); } static void mdacon_putcs(struct vc_data *c, const unsigned short *s, int count, int y, int x) { u16 *dest = mda_addr(x, y); for (; count > 0; count--) { scr_writew(mda_convert_attr(scr_readw(s++)), dest++); } } static void mdacon_clear(struct vc_data *c, int y, int x, int height, int width) { u16 *dest = mda_addr(x, y); u16 eattr = mda_convert_attr(c->vc_video_erase_char); if (width <= 0 || height <= 0) return; if (x==0 && width==mda_num_columns) { scr_memsetw(dest, eattr, height*width*2); } else { for (; height > 0; height--, dest+=mda_num_columns) scr_memsetw(dest, eattr, width*2); } } static int mdacon_switch(struct vc_data *c) { return 1; /* redrawing needed */ } static int mdacon_blank(struct vc_data *c, int blank, int mode_switch) { if (mda_type == TYPE_MDA) { if (blank) scr_memsetw(mda_vram_base, mda_convert_attr(c->vc_video_erase_char), c->vc_screenbuf_size); /* Tell console.c that it has to restore the screen itself */ return 1; } else { if (blank) outb_p(0x00, mda_mode_port); /* disable video */ else outb_p(MDA_MODE_VIDEO_EN | MDA_MODE_BLINK_EN, mda_mode_port); return 0; } } static void mdacon_cursor(struct vc_data *c, int mode) { if (mode == CM_ERASE) { mda_set_cursor(mda_vram_len - 1); return; } mda_set_cursor(c->state.y * mda_num_columns * 2 + c->state.x * 2); switch (CUR_SIZE(c->vc_cursor_type)) { case CUR_LOWER_THIRD: mda_set_cursor_size(10, 13); break; case CUR_LOWER_HALF: mda_set_cursor_size(7, 13); break; case CUR_TWO_THIRDS: mda_set_cursor_size(4, 13); break; case CUR_BLOCK: mda_set_cursor_size(1, 13); break; case CUR_NONE: mda_set_cursor_size(14, 13); break; default: mda_set_cursor_size(12, 13); break; } } static bool mdacon_scroll(struct vc_data *c, unsigned int t, unsigned int b, enum con_scroll dir, unsigned int lines) { u16 eattr = mda_convert_attr(c->vc_video_erase_char); if (!lines) return false; if (lines > c->vc_rows) /* maximum realistic size */ lines = c->vc_rows; switch (dir) { case SM_UP: scr_memmovew(mda_addr(0, t), mda_addr(0, t + lines), (b-t-lines)*mda_num_columns*2); scr_memsetw(mda_addr(0, b - lines), eattr, lines*mda_num_columns*2); break; case SM_DOWN: scr_memmovew(mda_addr(0, t + lines), mda_addr(0, t), (b-t-lines)*mda_num_columns*2); scr_memsetw(mda_addr(0, t), eattr, lines*mda_num_columns*2); break; } return false; } /* * The console `switch' structure for the MDA based console */ static const struct consw mda_con = { .owner = THIS_MODULE, .con_startup = mdacon_startup, .con_init = mdacon_init, .con_deinit = mdacon_deinit, .con_clear = mdacon_clear, .con_putc = mdacon_putc, .con_putcs = mdacon_putcs, .con_cursor = mdacon_cursor, .con_scroll = mdacon_scroll, .con_switch = mdacon_switch, .con_blank = mdacon_blank, .con_build_attr = mdacon_build_attr, .con_invert_region = mdacon_invert_region, }; int __init mda_console_init(void) { int err; if (mda_first_vc > mda_last_vc) return 1; console_lock(); err = do_take_over_console(&mda_con, mda_first_vc-1, mda_last_vc-1, 0); console_unlock(); return err; } static void __exit mda_console_exit(void) { give_up_console(&mda_con); } module_init(mda_console_init); module_exit(mda_console_exit); MODULE_LICENSE("GPL");
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1