1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * newport_con.c: Abscon for newport hardware
4 *
5 * (C) 1998 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
6 * (C) 1999 Ulf Carlsson (ulfc@thepuffingruop.com)
7 *
8 * This driver is based on sgicons.c and cons_newport.
9 *
10 * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
11 * Copyright (C) 1997 Miguel de Icaza (miguel@nuclecu.unam.mx)
12 */
13 #include <linux/init.h>
14 #include <linux/kernel.h>
15 #include <linux/errno.h>
16 #include <linux/kd.h>
17 #include <linux/selection.h>
18 #include <linux/console.h>
19 #include <linux/vt_kern.h>
20 #include <linux/mm.h>
21 #include <linux/module.h>
22 #include <linux/slab.h>
23
24 #include <asm/io.h>
25 #include <linux/uaccess.h>
26 #include <asm/page.h>
27 #include <asm/gio_device.h>
28
29 #include <video/newport.h>
30
31 #include <linux/linux_logo.h>
32 #include <linux/font.h>
33
34 #define NEWPORT_LEN 0x10000
35
36 #define FONT_DATA ((unsigned char *)font_vga_8x16.data)
37
38 static unsigned char *font_data[MAX_NR_CONSOLES];
39
40 static struct newport_regs *npregs;
41 static unsigned long newport_addr;
42
43 static int logo_active;
44 static int topscan;
45 static int xcurs_correction = 29;
46 static int newport_xsize;
47 static int newport_ysize;
48 static int newport_has_init;
49
50 static int newport_set_def_font(int unit, struct console_font *op);
51
52 #define BMASK(c) (c << 24)
53
54 #define RENDER(regs, cp) do { \
55 (regs)->go.zpattern = BMASK((cp)[0x0]); (regs)->go.zpattern = BMASK((cp)[0x1]); \
56 (regs)->go.zpattern = BMASK((cp)[0x2]); (regs)->go.zpattern = BMASK((cp)[0x3]); \
57 (regs)->go.zpattern = BMASK((cp)[0x4]); (regs)->go.zpattern = BMASK((cp)[0x5]); \
58 (regs)->go.zpattern = BMASK((cp)[0x6]); (regs)->go.zpattern = BMASK((cp)[0x7]); \
59 (regs)->go.zpattern = BMASK((cp)[0x8]); (regs)->go.zpattern = BMASK((cp)[0x9]); \
60 (regs)->go.zpattern = BMASK((cp)[0xa]); (regs)->go.zpattern = BMASK((cp)[0xb]); \
61 (regs)->go.zpattern = BMASK((cp)[0xc]); (regs)->go.zpattern = BMASK((cp)[0xd]); \
62 (regs)->go.zpattern = BMASK((cp)[0xe]); (regs)->go.zpattern = BMASK((cp)[0xf]); \
63 } while(0)
64
65 #define TESTVAL 0xdeadbeef
66 #define XSTI_TO_FXSTART(val) (((val) & 0xffff) << 11)
67
newport_render_background(int xstart,int ystart,int xend,int yend,int ci)68 static inline void newport_render_background(int xstart, int ystart,
69 int xend, int yend, int ci)
70 {
71 newport_wait(npregs);
72 npregs->set.wrmask = 0xffffffff;
73 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
74 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX
75 | NPORT_DMODE0_STOPY);
76 npregs->set.colori = ci;
77 npregs->set.xystarti =
78 (xstart << 16) | ((ystart + topscan) & 0x3ff);
79 npregs->go.xyendi =
80 ((xend + 7) << 16) | ((yend + topscan + 15) & 0x3ff);
81 }
82
newport_init_cmap(void)83 static inline void newport_init_cmap(void)
84 {
85 unsigned short i;
86
87 for (i = 0; i < 16; i++) {
88 newport_bfwait(npregs);
89 newport_cmap_setaddr(npregs, color_table[i]);
90 newport_cmap_setrgb(npregs,
91 default_red[i],
92 default_grn[i], default_blu[i]);
93 }
94 }
95
newport_show_logo(void)96 static const struct linux_logo *newport_show_logo(void)
97 {
98 #ifdef CONFIG_LOGO_SGI_CLUT224
99 const struct linux_logo *logo = fb_find_logo(8);
100 const unsigned char *clut;
101 const unsigned char *data;
102 unsigned long i;
103
104 if (!logo)
105 return NULL;
106 clut = logo->clut;
107 data = logo->data;
108
109 for (i = 0; i < logo->clutsize; i++) {
110 newport_bfwait(npregs);
111 newport_cmap_setaddr(npregs, i + 0x20);
112 newport_cmap_setrgb(npregs, clut[0], clut[1], clut[2]);
113 clut += 3;
114 }
115
116 newport_wait(npregs);
117 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
118 NPORT_DMODE0_CHOST);
119
120 npregs->set.xystarti = ((newport_xsize - logo->width) << 16) | (0);
121 npregs->set.xyendi = ((newport_xsize - 1) << 16);
122 newport_wait(npregs);
123
124 for (i = 0; i < logo->width*logo->height; i++)
125 npregs->go.hostrw0 = *data++ << 24;
126
127 return logo;
128 #else
129 return NULL;
130 #endif /* CONFIG_LOGO_SGI_CLUT224 */
131 }
132
newport_clear_screen(int xstart,int ystart,int xend,int yend,int ci)133 static inline void newport_clear_screen(int xstart, int ystart, int xend,
134 int yend, int ci)
135 {
136 if (logo_active)
137 return;
138
139 newport_wait(npregs);
140 npregs->set.wrmask = 0xffffffff;
141 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
142 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX
143 | NPORT_DMODE0_STOPY);
144 npregs->set.colori = ci;
145 npregs->set.xystarti = (xstart << 16) | ystart;
146 npregs->go.xyendi = (xend << 16) | yend;
147 }
148
newport_clear_lines(int ystart,int yend,int ci)149 static inline void newport_clear_lines(int ystart, int yend, int ci)
150 {
151 ystart = ((ystart << 4) + topscan) & 0x3ff;
152 yend = ((yend << 4) + topscan + 15) & 0x3ff;
153 newport_clear_screen(0, ystart, 1280 + 63, yend, ci);
154 }
155
newport_reset(void)156 static void newport_reset(void)
157 {
158 unsigned short treg;
159 int i;
160
161 newport_wait(npregs);
162 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
163 newport_vc2_set(npregs, VC2_IREG_CONTROL,
164 (treg | VC2_CTRL_EVIDEO));
165
166 treg = newport_vc2_get(npregs, VC2_IREG_CENTRY);
167 newport_vc2_set(npregs, VC2_IREG_RADDR, treg);
168 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM |
169 NPORT_DMODE_W2 | VC2_PROTOCOL);
170 for (i = 0; i < 128; i++) {
171 newport_bfwait(npregs);
172 if (i == 92 || i == 94)
173 npregs->set.dcbdata0.byshort.s1 = 0xff00;
174 else
175 npregs->set.dcbdata0.byshort.s1 = 0x0000;
176 }
177
178 newport_init_cmap();
179
180 /* turn off popup plane */
181 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL |
182 XM9_CRS_CONFIG | NPORT_DMODE_W1);
183 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE;
184 npregs->set.dcbmode = (DCB_XMAP1 | R_DCB_XMAP9_PROTOCOL |
185 XM9_CRS_CONFIG | NPORT_DMODE_W1);
186 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE;
187
188 topscan = 0;
189 npregs->cset.topscan = 0x3ff;
190 npregs->cset.xywin = (4096 << 16) | 4096;
191
192 /* Clear the screen. */
193 newport_clear_screen(0, 0, 1280 + 63, 1024, 0);
194 }
195
196 /*
197 * calculate the actual screen size by reading
198 * the video timing out of the VC2
199 */
newport_get_screensize(void)200 static void newport_get_screensize(void)
201 {
202 int i, cols;
203 unsigned short ventry, treg;
204 unsigned short linetable[128]; /* should be enough */
205
206 ventry = newport_vc2_get(npregs, VC2_IREG_VENTRY);
207 newport_vc2_set(npregs, VC2_IREG_RADDR, ventry);
208 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM |
209 NPORT_DMODE_W2 | VC2_PROTOCOL);
210 for (i = 0; i < 128; i++) {
211 newport_bfwait(npregs);
212 linetable[i] = npregs->set.dcbdata0.byshort.s1;
213 }
214
215 newport_xsize = newport_ysize = 0;
216 for (i = 0; i < ARRAY_SIZE(linetable) - 1 && linetable[i + 1]; i += 2) {
217 cols = 0;
218 newport_vc2_set(npregs, VC2_IREG_RADDR, linetable[i]);
219 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM |
220 NPORT_DMODE_W2 | VC2_PROTOCOL);
221 do {
222 newport_bfwait(npregs);
223 treg = npregs->set.dcbdata0.byshort.s1;
224 if ((treg & 1) == 0)
225 cols += (treg >> 7) & 0xfe;
226 if ((treg & 0x80) == 0) {
227 newport_bfwait(npregs);
228 treg = npregs->set.dcbdata0.byshort.s1;
229 }
230 } while ((treg & 0x8000) == 0);
231 if (cols) {
232 if (cols > newport_xsize)
233 newport_xsize = cols;
234 newport_ysize += linetable[i + 1];
235 }
236 }
237 printk("NG1: Screensize %dx%d\n", newport_xsize, newport_ysize);
238 }
239
newport_get_revisions(void)240 static void newport_get_revisions(void)
241 {
242 unsigned int tmp;
243 unsigned int board_rev;
244 unsigned int rex3_rev;
245 unsigned int vc2_rev;
246 unsigned int cmap_rev;
247 unsigned int xmap9_rev;
248 unsigned int bt445_rev;
249 unsigned int bitplanes;
250
251 rex3_rev = npregs->cset.status & NPORT_STAT_VERS;
252
253 npregs->set.dcbmode = (DCB_CMAP0 | NCMAP_PROTOCOL |
254 NCMAP_REGADDR_RREG | NPORT_DMODE_W1);
255 tmp = npregs->set.dcbdata0.bybytes.b3;
256 cmap_rev = tmp & 7;
257 board_rev = (tmp >> 4) & 7;
258 bitplanes = ((board_rev > 1) && (tmp & 0x80)) ? 8 : 24;
259
260 npregs->set.dcbmode = (DCB_CMAP1 | NCMAP_PROTOCOL |
261 NCMAP_REGADDR_RREG | NPORT_DMODE_W1);
262 tmp = npregs->set.dcbdata0.bybytes.b3;
263 if ((tmp & 7) < cmap_rev)
264 cmap_rev = (tmp & 7);
265
266 vc2_rev = (newport_vc2_get(npregs, VC2_IREG_CONFIG) >> 5) & 7;
267
268 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL |
269 XM9_CRS_REVISION | NPORT_DMODE_W1);
270 xmap9_rev = npregs->set.dcbdata0.bybytes.b3 & 7;
271
272 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL |
273 BT445_CSR_ADDR_REG | NPORT_DMODE_W1);
274 npregs->set.dcbdata0.bybytes.b3 = BT445_REVISION_REG;
275 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL |
276 BT445_CSR_REVISION | NPORT_DMODE_W1);
277 bt445_rev = (npregs->set.dcbdata0.bybytes.b3 >> 4) - 0x0a;
278
279 #define L(a) (char)('A'+(a))
280 printk
281 ("NG1: Revision %d, %d bitplanes, REX3 revision %c, VC2 revision %c, xmap9 revision %c, cmap revision %c, bt445 revision %c\n",
282 board_rev, bitplanes, L(rex3_rev), L(vc2_rev), L(xmap9_rev),
283 L(cmap_rev ? (cmap_rev + 1) : 0), L(bt445_rev));
284 #undef L
285
286 if (board_rev == 3) /* I don't know all affected revisions */
287 xcurs_correction = 21;
288 }
289
newport_exit(void)290 static void newport_exit(void)
291 {
292 int i;
293
294 /* free memory used by user font */
295 for (i = 0; i < MAX_NR_CONSOLES; i++)
296 newport_set_def_font(i, NULL);
297 }
298
299 /* Can't be __init, do_take_over_console may call it later */
newport_startup(void)300 static const char *newport_startup(void)
301 {
302 int i;
303
304 npregs->cset.config = NPORT_CFG_GD0;
305
306 if (newport_wait(npregs))
307 goto out_unmap;
308
309 npregs->set.xstarti = TESTVAL;
310 if (npregs->set._xstart.word != XSTI_TO_FXSTART(TESTVAL))
311 goto out_unmap;
312
313 for (i = 0; i < MAX_NR_CONSOLES; i++)
314 font_data[i] = FONT_DATA;
315
316 newport_reset();
317 newport_get_revisions();
318 newport_get_screensize();
319 newport_has_init = 1;
320
321 return "SGI Newport";
322
323 out_unmap:
324 return NULL;
325 }
326
newport_init(struct vc_data * vc,bool init)327 static void newport_init(struct vc_data *vc, bool init)
328 {
329 int cols, rows;
330
331 cols = newport_xsize / 8;
332 rows = newport_ysize / 16;
333 vc->vc_can_do_color = 1;
334 if (init) {
335 vc->vc_cols = cols;
336 vc->vc_rows = rows;
337 } else
338 vc_resize(vc, cols, rows);
339 }
340
newport_deinit(struct vc_data * c)341 static void newport_deinit(struct vc_data *c)
342 {
343 if (!con_is_bound(&newport_con) && newport_has_init) {
344 newport_exit();
345 newport_has_init = 0;
346 }
347 }
348
newport_clear(struct vc_data * vc,unsigned int sy,unsigned int sx,unsigned int width)349 static void newport_clear(struct vc_data *vc, unsigned int sy, unsigned int sx,
350 unsigned int width)
351 {
352 int xend = ((sx + width) << 3) - 1;
353 int ystart = ((sy << 4) + topscan) & 0x3ff;
354 int yend = (((sy + 1) << 4) + topscan - 1) & 0x3ff;
355
356 if (logo_active)
357 return;
358
359 if (ystart < yend) {
360 newport_clear_screen(sx << 3, ystart, xend, yend,
361 (vc->state.color & 0xf0) >> 4);
362 } else {
363 newport_clear_screen(sx << 3, ystart, xend, 1023,
364 (vc->state.color & 0xf0) >> 4);
365 newport_clear_screen(sx << 3, 0, xend, yend,
366 (vc->state.color & 0xf0) >> 4);
367 }
368 }
369
newport_putc(struct vc_data * vc,u16 charattr,unsigned int ypos,unsigned int xpos)370 static void newport_putc(struct vc_data *vc, u16 charattr, unsigned int ypos,
371 unsigned int xpos)
372 {
373 unsigned char *p;
374
375 p = &font_data[vc->vc_num][(charattr & 0xff) << 4];
376 charattr = (charattr >> 8) & 0xff;
377 xpos <<= 3;
378 ypos <<= 4;
379
380 newport_render_background(xpos, ypos, xpos, ypos,
381 (charattr & 0xf0) >> 4);
382
383 /* Set the color and drawing mode. */
384 newport_wait(npregs);
385 npregs->set.colori = charattr & 0xf;
386 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
387 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB |
388 NPORT_DMODE0_L32);
389
390 /* Set coordinates for bitmap operation. */
391 npregs->set.xystarti = (xpos << 16) | ((ypos + topscan) & 0x3ff);
392 npregs->set.xyendi = ((xpos + 7) << 16);
393 newport_wait(npregs);
394
395 /* Go, baby, go... */
396 RENDER(npregs, p);
397 }
398
newport_putcs(struct vc_data * vc,const u16 * s,unsigned int count,unsigned int ypos,unsigned int xpos)399 static void newport_putcs(struct vc_data *vc, const u16 *s,
400 unsigned int count, unsigned int ypos,
401 unsigned int xpos)
402 {
403 unsigned char *p;
404 unsigned int i;
405 u16 charattr;
406
407 charattr = (scr_readw(s) >> 8) & 0xff;
408
409 xpos <<= 3;
410 ypos <<= 4;
411
412 if (!logo_active)
413 /* Clear the area behing the string */
414 newport_render_background(xpos, ypos,
415 xpos + ((count - 1) << 3), ypos,
416 (charattr & 0xf0) >> 4);
417
418 newport_wait(npregs);
419
420 /* Set the color and drawing mode. */
421 npregs->set.colori = charattr & 0xf;
422 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
423 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB |
424 NPORT_DMODE0_L32);
425
426 for (i = 0; i < count; i++, xpos += 8) {
427 p = &font_data[vc->vc_num][(scr_readw(s++) & 0xff) << 4];
428
429 newport_wait(npregs);
430
431 /* Set coordinates for bitmap operation. */
432 npregs->set.xystarti =
433 (xpos << 16) | ((ypos + topscan) & 0x3ff);
434 npregs->set.xyendi = ((xpos + 7) << 16);
435
436 /* Go, baby, go... */
437 RENDER(npregs, p);
438 }
439 }
440
newport_cursor(struct vc_data * vc,bool enable)441 static void newport_cursor(struct vc_data *vc, bool enable)
442 {
443 unsigned short treg;
444 int xcurs, ycurs;
445
446 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
447
448 if (!enable) {
449 newport_vc2_set(npregs, VC2_IREG_CONTROL,
450 (treg & ~(VC2_CTRL_ECDISP)));
451 return;
452 }
453
454 newport_vc2_set(npregs, VC2_IREG_CONTROL, (treg | VC2_CTRL_ECDISP));
455 xcurs = (vc->vc_pos - vc->vc_visible_origin) / 2;
456 ycurs = ((xcurs / vc->vc_cols) << 4) + 31;
457 xcurs = ((xcurs % vc->vc_cols) << 3) + xcurs_correction;
458 newport_vc2_set(npregs, VC2_IREG_CURSX, xcurs);
459 newport_vc2_set(npregs, VC2_IREG_CURSY, ycurs);
460 }
461
newport_switch(struct vc_data * vc)462 static bool newport_switch(struct vc_data *vc)
463 {
464 static int logo_drawn = 0;
465
466 topscan = 0;
467 npregs->cset.topscan = 0x3ff;
468
469 if (!logo_drawn) {
470 if (newport_show_logo()) {
471 logo_drawn = 1;
472 logo_active = 1;
473 }
474 }
475
476 return true;
477 }
478
newport_blank(struct vc_data * c,enum vesa_blank_mode blank,bool mode_switch)479 static bool newport_blank(struct vc_data *c, enum vesa_blank_mode blank,
480 bool mode_switch)
481 {
482 unsigned short treg;
483
484 if (blank == VESA_NO_BLANKING) {
485 /* unblank console */
486 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
487 newport_vc2_set(npregs, VC2_IREG_CONTROL,
488 (treg | VC2_CTRL_EDISP));
489 } else {
490 /* blank console */
491 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
492 newport_vc2_set(npregs, VC2_IREG_CONTROL,
493 (treg & ~(VC2_CTRL_EDISP)));
494 }
495
496 return true;
497 }
498
newport_set_font(int unit,const struct console_font * op,unsigned int vpitch)499 static int newport_set_font(int unit, const struct console_font *op,
500 unsigned int vpitch)
501 {
502 int w = op->width;
503 int h = op->height;
504 int size = h * op->charcount;
505 int i;
506 unsigned char *new_data, *data = op->data, *p;
507
508 /* ladis: when I grow up, there will be a day... and more sizes will
509 * be supported ;-) */
510 if ((w != 8) || (h != 16) || (vpitch != 32)
511 || (op->charcount != 256 && op->charcount != 512))
512 return -EINVAL;
513
514 if (!(new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size,
515 GFP_USER))) return -ENOMEM;
516
517 new_data += FONT_EXTRA_WORDS * sizeof(int);
518 FNTSIZE(new_data) = size;
519 FNTCHARCNT(new_data) = op->charcount;
520 REFCOUNT(new_data) = 0; /* usage counter */
521 FNTSUM(new_data) = 0;
522
523 p = new_data;
524 for (i = 0; i < op->charcount; i++) {
525 memcpy(p, data, h);
526 data += 32;
527 p += h;
528 }
529
530 /* check if font is already used by other console */
531 for (i = 0; i < MAX_NR_CONSOLES; i++) {
532 if (font_data[i] != FONT_DATA
533 && FNTSIZE(font_data[i]) == size
534 && !memcmp(font_data[i], new_data, size)) {
535 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
536 /* current font is the same as the new one */
537 if (i == unit)
538 return 0;
539 new_data = font_data[i];
540 break;
541 }
542 }
543 /* old font is user font */
544 if (font_data[unit] != FONT_DATA) {
545 if (--REFCOUNT(font_data[unit]) == 0)
546 kfree(font_data[unit] -
547 FONT_EXTRA_WORDS * sizeof(int));
548 }
549 REFCOUNT(new_data)++;
550 font_data[unit] = new_data;
551
552 return 0;
553 }
554
newport_set_def_font(int unit,struct console_font * op)555 static int newport_set_def_font(int unit, struct console_font *op)
556 {
557 if (font_data[unit] != FONT_DATA) {
558 if (--REFCOUNT(font_data[unit]) == 0)
559 kfree(font_data[unit] -
560 FONT_EXTRA_WORDS * sizeof(int));
561 font_data[unit] = FONT_DATA;
562 }
563
564 return 0;
565 }
566
newport_font_default(struct vc_data * vc,struct console_font * op,const char * name)567 static int newport_font_default(struct vc_data *vc, struct console_font *op,
568 const char *name)
569 {
570 return newport_set_def_font(vc->vc_num, op);
571 }
572
newport_font_set(struct vc_data * vc,const struct console_font * font,unsigned int vpitch,unsigned int flags)573 static int newport_font_set(struct vc_data *vc, const struct console_font *font,
574 unsigned int vpitch, unsigned int flags)
575 {
576 return newport_set_font(vc->vc_num, font, vpitch);
577 }
578
newport_scroll(struct vc_data * vc,unsigned int t,unsigned int b,enum con_scroll dir,unsigned int lines)579 static bool newport_scroll(struct vc_data *vc, unsigned int t, unsigned int b,
580 enum con_scroll dir, unsigned int lines)
581 {
582 int count, x, y;
583 unsigned short *s, *d;
584 unsigned short chattr;
585
586 logo_active = 0; /* it's time to disable the logo now.. */
587
588 if (t == 0 && b == vc->vc_rows) {
589 if (dir == SM_UP) {
590 topscan = (topscan + (lines << 4)) & 0x3ff;
591 newport_clear_lines(vc->vc_rows - lines,
592 vc->vc_rows - 1,
593 (vc->state.color & 0xf0) >> 4);
594 } else {
595 topscan = (topscan + (-lines << 4)) & 0x3ff;
596 newport_clear_lines(0, lines - 1,
597 (vc->state.color & 0xf0) >> 4);
598 }
599 npregs->cset.topscan = (topscan - 1) & 0x3ff;
600 return false;
601 }
602
603 count = (b - t - lines) * vc->vc_cols;
604 if (dir == SM_UP) {
605 x = 0;
606 y = t;
607 s = (unsigned short *) (vc->vc_origin +
608 vc->vc_size_row * (t + lines));
609 d = (unsigned short *) (vc->vc_origin +
610 vc->vc_size_row * t);
611 while (count--) {
612 chattr = scr_readw(s++);
613 if (chattr != scr_readw(d)) {
614 newport_putc(vc, chattr, y, x);
615 scr_writew(chattr, d);
616 }
617 d++;
618 if (++x == vc->vc_cols) {
619 x = 0;
620 y++;
621 }
622 }
623 d = (unsigned short *) (vc->vc_origin +
624 vc->vc_size_row * (b - lines));
625 x = 0;
626 y = b - lines;
627 for (count = 0; count < (lines * vc->vc_cols); count++) {
628 if (scr_readw(d) != vc->vc_video_erase_char) {
629 newport_putc(vc, vc->vc_video_erase_char,
630 y, x);
631 scr_writew(vc->vc_video_erase_char, d);
632 }
633 d++;
634 if (++x == vc->vc_cols) {
635 x = 0;
636 y++;
637 }
638 }
639 } else {
640 x = vc->vc_cols - 1;
641 y = b - 1;
642 s = (unsigned short *) (vc->vc_origin +
643 vc->vc_size_row * (b - lines) - 2);
644 d = (unsigned short *) (vc->vc_origin +
645 vc->vc_size_row * b - 2);
646 while (count--) {
647 chattr = scr_readw(s--);
648 if (chattr != scr_readw(d)) {
649 newport_putc(vc, chattr, y, x);
650 scr_writew(chattr, d);
651 }
652 d--;
653 if (x-- == 0) {
654 x = vc->vc_cols - 1;
655 y--;
656 }
657 }
658 d = (unsigned short *) (vc->vc_origin +
659 vc->vc_size_row * t);
660 x = 0;
661 y = t;
662 for (count = 0; count < (lines * vc->vc_cols); count++) {
663 if (scr_readw(d) != vc->vc_video_erase_char) {
664 newport_putc(vc, vc->vc_video_erase_char,
665 y, x);
666 scr_writew(vc->vc_video_erase_char, d);
667 }
668 d++;
669 if (++x == vc->vc_cols) {
670 x = 0;
671 y++;
672 }
673 }
674 }
675 return true;
676 }
677
newport_save_screen(struct vc_data * vc)678 static void newport_save_screen(struct vc_data *vc) { }
679
680 const struct consw newport_con = {
681 .owner = THIS_MODULE,
682 .con_startup = newport_startup,
683 .con_init = newport_init,
684 .con_deinit = newport_deinit,
685 .con_clear = newport_clear,
686 .con_putc = newport_putc,
687 .con_putcs = newport_putcs,
688 .con_cursor = newport_cursor,
689 .con_scroll = newport_scroll,
690 .con_switch = newport_switch,
691 .con_blank = newport_blank,
692 .con_font_set = newport_font_set,
693 .con_font_default = newport_font_default,
694 .con_save_screen = newport_save_screen
695 };
696
newport_probe(struct gio_device * dev,const struct gio_device_id * id)697 static int newport_probe(struct gio_device *dev,
698 const struct gio_device_id *id)
699 {
700 int err;
701
702 if (!dev->resource.start)
703 return -EINVAL;
704
705 if (npregs)
706 return -EBUSY; /* we only support one Newport as console */
707
708 newport_addr = dev->resource.start + 0xF0000;
709 if (!request_mem_region(newport_addr, NEWPORT_LEN, "Newport"))
710 return -ENODEV;
711
712 npregs = (struct newport_regs *)/* ioremap cannot fail */
713 ioremap(newport_addr, sizeof(struct newport_regs));
714 console_lock();
715 err = do_take_over_console(&newport_con, 0, MAX_NR_CONSOLES - 1, 1);
716 console_unlock();
717
718 if (err) {
719 iounmap((void *)npregs);
720 release_mem_region(newport_addr, NEWPORT_LEN);
721 }
722 return err;
723 }
724
newport_remove(struct gio_device * dev)725 static void newport_remove(struct gio_device *dev)
726 {
727 give_up_console(&newport_con);
728 iounmap((void *)npregs);
729 release_mem_region(newport_addr, NEWPORT_LEN);
730 }
731
732 static struct gio_device_id newport_ids[] = {
733 { .id = 0x7e },
734 { .id = 0xff }
735 };
736
737 MODULE_ALIAS("gio:7e");
738
739 static struct gio_driver newport_driver = {
740 .name = "newport",
741 .id_table = newport_ids,
742 .probe = newport_probe,
743 .remove = newport_remove,
744 };
745 module_driver(newport_driver, gio_register_driver, gio_unregister_driver);
746
747 MODULE_DESCRIPTION("SGI Newport console driver");
748 MODULE_LICENSE("GPL");
749