1 | /* $NetBSD: pcdisplay_subr.c,v 1.35 2010/10/19 22:27:19 jmcneill Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1995, 1996 Carnegie-Mellon University. |
5 | * All rights reserved. |
6 | * |
7 | * Author: Chris G. Demetriou |
8 | * |
9 | * Permission to use, copy, modify and distribute this software and |
10 | * its documentation is hereby granted, provided that both the copyright |
11 | * notice and this permission notice appear in all copies of the |
12 | * software, derivative works or modified versions, and any portions |
13 | * thereof, and that both notices appear in supporting documentation. |
14 | * |
15 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" |
16 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND |
17 | * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
18 | * |
19 | * Carnegie Mellon requests users of this software to return to |
20 | * |
21 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
22 | * School of Computer Science |
23 | * Carnegie Mellon University |
24 | * Pittsburgh PA 15213-3890 |
25 | * |
26 | * any improvements or extensions that they make and grant Carnegie the |
27 | * rights to redistribute these changes. |
28 | */ |
29 | |
30 | #include <sys/cdefs.h> |
31 | __KERNEL_RCSID(0, "$NetBSD: pcdisplay_subr.c,v 1.35 2010/10/19 22:27:19 jmcneill Exp $" ); |
32 | |
33 | #include "opt_wsmsgattrs.h" /* for WSDISPLAY_CUSTOM_OUTPUT */ |
34 | |
35 | #include <sys/param.h> |
36 | #include <sys/systm.h> |
37 | #include <sys/device.h> |
38 | #include <sys/bus.h> |
39 | |
40 | #include <dev/ic/mc6845reg.h> |
41 | #include <dev/ic/pcdisplayvar.h> |
42 | #include <dev/wscons/wsconsio.h> |
43 | |
44 | #include <dev/wscons/wsdisplayvar.h> |
45 | |
46 | void |
47 | pcdisplay_cursor_init(struct pcdisplayscreen *scr, int existing) |
48 | { |
49 | #ifdef PCDISPLAY_SOFTCURSOR |
50 | bus_space_tag_t memt; |
51 | bus_space_handle_t memh; |
52 | int off; |
53 | |
54 | /* Disable the hardware cursor */ |
55 | pcdisplay_6845_write(scr->hdl, curstart, 0x20); |
56 | pcdisplay_6845_write(scr->hdl, curend, 0x00); |
57 | |
58 | if (existing) { |
59 | /* |
60 | * This is the first screen. At this point, scr->mem is NULL |
61 | * (no backing store), so we can't use pcdisplay_cursor() to |
62 | * do this. |
63 | */ |
64 | memt = scr->hdl->ph_memt; |
65 | memh = scr->hdl->ph_memh; |
66 | off = (scr->cursorrow * scr->type->ncols + scr->cursorcol) * 2 |
67 | + scr->dispoffset; |
68 | |
69 | scr->cursortmp = bus_space_read_2(memt, memh, off); |
70 | bus_space_write_2(memt, memh, off, scr->cursortmp ^ 0x7700); |
71 | } else |
72 | scr->cursortmp = 0; |
73 | #else |
74 | /* |
75 | * Firmware might not have initialized the cursor shape. Make |
76 | * sure there's something we can see. |
77 | * Don't touch the hardware if this is not the first screen. |
78 | */ |
79 | if (existing) { |
80 | pcdisplay_6845_write(scr->hdl, curstart, |
81 | scr->type->fontheight - 2); |
82 | pcdisplay_6845_write(scr->hdl, curend, |
83 | scr->type->fontheight - 1); |
84 | } |
85 | #endif |
86 | scr->cursoron = 1; |
87 | } |
88 | |
89 | void |
90 | pcdisplay_cursor(void *id, int on, int row, int col) |
91 | { |
92 | #ifdef PCDISPLAY_SOFTCURSOR |
93 | struct pcdisplayscreen *scr = id; |
94 | bus_space_tag_t memt = scr->hdl->ph_memt; |
95 | bus_space_handle_t memh = scr->hdl->ph_memh; |
96 | int off; |
97 | |
98 | /* Remove old cursor image */ |
99 | if (scr->cursoron) { |
100 | off = scr->cursorrow * scr->type->ncols + scr->cursorcol; |
101 | if (scr->active) |
102 | bus_space_write_2(memt, memh, scr->dispoffset + off * 2, |
103 | scr->cursortmp); |
104 | else |
105 | scr->mem[off] = scr->cursortmp; |
106 | } |
107 | |
108 | scr->cursorrow = row; |
109 | scr->cursorcol = col; |
110 | |
111 | if ((scr->cursoron = on) == 0) |
112 | return; |
113 | |
114 | off = (scr->cursorrow * scr->type->ncols + scr->cursorcol); |
115 | if (scr->active) { |
116 | off = off * 2 + scr->dispoffset; |
117 | scr->cursortmp = bus_space_read_2(memt, memh, off); |
118 | bus_space_write_2(memt, memh, off, scr->cursortmp ^ 0x7700); |
119 | } else { |
120 | scr->cursortmp = scr->mem[off]; |
121 | scr->mem[off] = scr->cursortmp ^ 0x7700; |
122 | } |
123 | #else /* PCDISPLAY_SOFTCURSOR */ |
124 | struct pcdisplayscreen *scr = id; |
125 | int pos; |
126 | |
127 | scr->cursorrow = row; |
128 | scr->cursorcol = col; |
129 | scr->cursoron = on; |
130 | |
131 | if (scr->active) { |
132 | if (!on) |
133 | pos = 0x3fff; |
134 | else |
135 | pos = scr->dispoffset / 2 |
136 | + row * scr->type->ncols + col; |
137 | |
138 | pcdisplay_6845_write(scr->hdl, cursorh, pos >> 8); |
139 | pcdisplay_6845_write(scr->hdl, cursorl, pos); |
140 | } |
141 | #endif /* PCDISPLAY_SOFTCURSOR */ |
142 | } |
143 | |
144 | #if 0 |
145 | unsigned int |
146 | pcdisplay_mapchar_simple(void *id, int uni) |
147 | { |
148 | if (uni < 128) |
149 | return (uni); |
150 | |
151 | return (1); /* XXX ??? smiley */ |
152 | } |
153 | #endif |
154 | |
155 | void |
156 | pcdisplay_putchar(void *id, int row, int col, unsigned int c, long attr) |
157 | { |
158 | struct pcdisplayscreen *scr = id; |
159 | bus_space_tag_t memt = scr->hdl->ph_memt; |
160 | bus_space_handle_t memh = scr->hdl->ph_memh; |
161 | size_t off; |
162 | |
163 | off = row * scr->type->ncols + col; |
164 | |
165 | /* check for bogus row and column sizes */ |
166 | if (__predict_false(off >= (scr->type->ncols * scr->type->nrows))) |
167 | return; |
168 | |
169 | if (scr->active) |
170 | bus_space_write_2(memt, memh, scr->dispoffset + off * 2, |
171 | c | (attr << 8)); |
172 | else |
173 | scr->mem[off] = c | (attr << 8); |
174 | |
175 | scr->visibleoffset = scr->dispoffset; |
176 | } |
177 | |
178 | void |
179 | pcdisplay_copycols(void *id, int row, int srccol, int dstcol, int ncols) |
180 | { |
181 | struct pcdisplayscreen *scr = id; |
182 | bus_space_tag_t memt = scr->hdl->ph_memt; |
183 | bus_space_handle_t memh = scr->hdl->ph_memh; |
184 | bus_size_t srcoff, dstoff; |
185 | |
186 | srcoff = dstoff = row * scr->type->ncols; |
187 | srcoff += srccol; |
188 | dstoff += dstcol; |
189 | |
190 | if (scr->active) |
191 | bus_space_copy_region_2(memt, memh, |
192 | scr->dispoffset + srcoff * 2, |
193 | memh, scr->dispoffset + dstoff * 2, |
194 | ncols); |
195 | else |
196 | memcpy(&scr->mem[dstoff], &scr->mem[srcoff], ncols * 2); |
197 | } |
198 | |
199 | void |
200 | pcdisplay_erasecols(void *id, int row, int startcol, int ncols, long fillattr) |
201 | { |
202 | struct pcdisplayscreen *scr = id; |
203 | bus_space_tag_t memt = scr->hdl->ph_memt; |
204 | bus_space_handle_t memh = scr->hdl->ph_memh; |
205 | bus_size_t off; |
206 | u_int16_t val; |
207 | int i; |
208 | |
209 | off = row * scr->type->ncols + startcol; |
210 | |
211 | val = (fillattr << 8) | ' '; |
212 | |
213 | if (scr->active) |
214 | bus_space_set_region_2(memt, memh, scr->dispoffset + off * 2, |
215 | val, ncols); |
216 | else |
217 | for (i = 0; i < ncols; i++) |
218 | scr->mem[off + i] = val; |
219 | } |
220 | |
221 | void |
222 | pcdisplay_copyrows(void *id, int srcrow, int dstrow, int nrows) |
223 | { |
224 | struct pcdisplayscreen *scr = id; |
225 | bus_space_tag_t memt = scr->hdl->ph_memt; |
226 | bus_space_handle_t memh = scr->hdl->ph_memh; |
227 | int ncols = scr->type->ncols; |
228 | bus_size_t srcoff, dstoff; |
229 | |
230 | srcoff = srcrow * ncols + 0; |
231 | dstoff = dstrow * ncols + 0; |
232 | |
233 | if (scr->active) |
234 | bus_space_copy_region_2(memt, memh, |
235 | scr->dispoffset + srcoff * 2, |
236 | memh, scr->dispoffset + dstoff * 2, |
237 | nrows * ncols); |
238 | else |
239 | memcpy(&scr->mem[dstoff], &scr->mem[srcoff], |
240 | nrows * ncols * 2); |
241 | } |
242 | |
243 | void |
244 | pcdisplay_eraserows(void *id, int startrow, int nrows, long fillattr) |
245 | { |
246 | struct pcdisplayscreen *scr = id; |
247 | bus_space_tag_t memt = scr->hdl->ph_memt; |
248 | bus_space_handle_t memh = scr->hdl->ph_memh; |
249 | bus_size_t off, count; |
250 | u_int16_t val; |
251 | u_int i; |
252 | |
253 | off = startrow * scr->type->ncols; |
254 | count = nrows * scr->type->ncols; |
255 | |
256 | val = (fillattr << 8) | ' '; |
257 | |
258 | if (scr->active) |
259 | bus_space_set_region_2(memt, memh, scr->dispoffset + off * 2, |
260 | val, count); |
261 | else |
262 | for (i = 0; i < count; i++) |
263 | scr->mem[off + i] = val; |
264 | } |
265 | |
266 | #ifdef WSDISPLAY_CUSTOM_OUTPUT |
267 | void |
268 | pcdisplay_replaceattr(void *id, long oldattr, long newattr) |
269 | { |
270 | struct pcdisplayscreen *scr = id; |
271 | bus_space_tag_t memt = scr->hdl->ph_memt; |
272 | bus_space_handle_t memh = scr->hdl->ph_memh; |
273 | int off; |
274 | uint16_t chardata; |
275 | |
276 | if (scr->active) |
277 | for (off = 0; off < scr->type->nrows * scr->type->ncols; |
278 | off++) { |
279 | chardata = bus_space_read_2(memt, memh, |
280 | scr->dispoffset + off * 2); |
281 | if ((long)(chardata >> 8) == oldattr) |
282 | bus_space_write_2(memt, memh, |
283 | scr->dispoffset + off * 2, |
284 | ((u_int16_t)(newattr << 8)) | |
285 | (chardata & 0x00FF)); |
286 | } |
287 | else |
288 | for (off = 0; off < scr->type->nrows * scr->type->ncols; |
289 | off++) { |
290 | chardata = scr->mem[off]; |
291 | if ((long)(chardata >> 8) == oldattr) |
292 | scr->mem[off] = ((u_int16_t)(newattr << 8)) | |
293 | (chardata & 0x00FF); |
294 | } |
295 | } |
296 | #endif /* WSDISPLAY_CUSTOM_OUTPUT */ |
297 | |
298 | int |
299 | pcdisplay_getwschar(struct pcdisplayscreen *scr, struct wsdisplay_char *wschar) |
300 | { |
301 | size_t off; |
302 | uint16_t chardata; |
303 | uint8_t attrbyte; |
304 | |
305 | KASSERT(scr != NULL && wschar != NULL); |
306 | |
307 | off = wschar->row * scr->type->ncols + wschar->col; |
308 | if (off >= scr->type->ncols * scr->type->nrows) |
309 | return -1; |
310 | |
311 | if (scr->active) |
312 | chardata = bus_space_read_2(scr->hdl->ph_memt, |
313 | scr->hdl->ph_memh, scr->dispoffset + off * 2); |
314 | else |
315 | chardata = scr->mem[off]; |
316 | |
317 | wschar->letter = (chardata & 0x00FF); |
318 | wschar->flags = 0; |
319 | attrbyte = (chardata & 0xFF00) >> 8; |
320 | if ((attrbyte & 0x08)) wschar->flags |= WSDISPLAY_CHAR_BRIGHT; |
321 | if ((attrbyte & 0x80)) wschar->flags |= WSDISPLAY_CHAR_BLINK; |
322 | wschar->foreground = attrbyte & 0x07; |
323 | wschar->background = (attrbyte >> 4) & 0x07; |
324 | |
325 | return 0; |
326 | } |
327 | |
328 | int |
329 | pcdisplay_putwschar(struct pcdisplayscreen *scr, struct wsdisplay_char *wschar) |
330 | { |
331 | size_t off; |
332 | uint16_t chardata; |
333 | uint8_t attrbyte; |
334 | |
335 | KASSERT(scr != NULL && wschar != NULL); |
336 | |
337 | off = wschar->row * scr->type->ncols + wschar->col; |
338 | if (off >= (scr->type->ncols * scr->type->nrows)) |
339 | return -1; |
340 | |
341 | attrbyte = wschar->background & 0x07; |
342 | if (wschar->flags & WSDISPLAY_CHAR_BLINK) attrbyte |= 0x08; |
343 | attrbyte <<= 4; |
344 | attrbyte |= wschar->foreground & 0x07; |
345 | if (wschar->flags & WSDISPLAY_CHAR_BRIGHT) attrbyte |= 0x08; |
346 | chardata = (attrbyte << 8) | wschar->letter; |
347 | |
348 | if (scr->active) |
349 | bus_space_write_2(scr->hdl->ph_memt, scr->hdl->ph_memh, |
350 | scr->dispoffset + off * 2, chardata); |
351 | else |
352 | scr->mem[off] = chardata; |
353 | |
354 | return 0; |
355 | } |
356 | |