Bug Summary

File:dev/ic/vga.c
Warning:line 1145, column 17
The left operand of '|' is a garbage value

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.4 -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name vga.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model static -mframe-pointer=all -relaxed-aliasing -ffp-contract=on -fno-rounding-math -mconstructor-aliases -ffreestanding -mcmodel=kernel -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -target-feature -sse2 -target-feature -sse -target-feature -3dnow -target-feature -mmx -target-feature +save-args -target-feature +retpoline-external-thunk -disable-red-zone -no-implicit-float -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -nostdsysteminc -nobuiltininc -resource-dir /usr/local/llvm16/lib/clang/16 -I /usr/src/sys -I /usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -I /usr/src/sys/arch -I /usr/src/sys/dev/pci/drm/include -I /usr/src/sys/dev/pci/drm/include/uapi -I /usr/src/sys/dev/pci/drm/amd/include/asic_reg -I /usr/src/sys/dev/pci/drm/amd/include -I /usr/src/sys/dev/pci/drm/amd/amdgpu -I /usr/src/sys/dev/pci/drm/amd/display -I /usr/src/sys/dev/pci/drm/amd/display/include -I /usr/src/sys/dev/pci/drm/amd/display/dc -I /usr/src/sys/dev/pci/drm/amd/display/amdgpu_dm -I /usr/src/sys/dev/pci/drm/amd/pm/inc -I /usr/src/sys/dev/pci/drm/amd/pm/legacy-dpm -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/inc -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu11 -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu12 -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu13 -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/inc -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/hwmgr -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/smumgr -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/inc -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/inc/pmfw_if -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc/hw -I /usr/src/sys/dev/pci/drm/amd/display/dc/clk_mgr -I /usr/src/sys/dev/pci/drm/amd/display/modules/inc -I /usr/src/sys/dev/pci/drm/amd/display/modules/hdcp -I /usr/src/sys/dev/pci/drm/amd/display/dmub/inc -I /usr/src/sys/dev/pci/drm/i915 -D DDB -D DIAGNOSTIC -D KTRACE -D ACCOUNTING -D KMEMSTATS -D PTRACE -D POOL_DEBUG -D CRYPTO -D SYSVMSG -D SYSVSEM -D SYSVSHM -D UVM_SWAP_ENCRYPT -D FFS -D FFS2 -D FFS_SOFTUPDATES -D UFS_DIRHASH -D QUOTA -D EXT2FS -D MFS -D NFSCLIENT -D NFSSERVER -D CD9660 -D UDF -D MSDOSFS -D FIFO -D FUSE -D SOCKET_SPLICE -D TCP_ECN -D TCP_SIGNATURE -D INET6 -D IPSEC -D PPP_BSDCOMP -D PPP_DEFLATE -D PIPEX -D MROUTING -D MPLS -D BOOT_CONFIG -D USER_PCICONF -D APERTURE -D MTRR -D NTFS -D SUSPEND -D HIBERNATE -D PCIVERBOSE -D USBVERBOSE -D WSDISPLAY_COMPAT_USL -D WSDISPLAY_COMPAT_RAWKBD -D WSDISPLAY_DEFAULTSCREENS=6 -D X86EMU -D ONEWIREVERBOSE -D MULTIPROCESSOR -D MAXUSERS=80 -D _KERNEL -O2 -Wno-pointer-sign -Wno-address-of-packed-member -Wno-constant-conversion -Wno-unused-but-set-variable -Wno-gnu-folding-constant -fdebug-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fcf-protection=branch -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -o /home/ben/Projects/scan/2024-01-11-110808-61670-1 -x c /usr/src/sys/dev/ic/vga.c
1/* $OpenBSD: vga.c,v 1.74 2021/05/27 23:24:40 cheloha Exp $ */
2/* $NetBSD: vga.c,v 1.28.2.1 2000/06/30 16:27:47 simonb Exp $ */
3
4/*-
5 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
6 * Copyright (c) 1992-1998 Søren Schmidt
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer as
14 * the first lines of this file unmodified.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 *
32 */
33/*
34 * Copyright (c) 1995, 1996 Carnegie-Mellon University.
35 * All rights reserved.
36 *
37 * Author: Chris G. Demetriou
38 *
39 * Permission to use, copy, modify and distribute this software and
40 * its documentation is hereby granted, provided that both the copyright
41 * notice and this permission notice appear in all copies of the
42 * software, derivative works or modified versions, and any portions
43 * thereof, and that both notices appear in supporting documentation.
44 *
45 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
46 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
47 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
48 *
49 * Carnegie Mellon requests users of this software to return to
50 *
51 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
52 * School of Computer Science
53 * Carnegie Mellon University
54 * Pittsburgh PA 15213-3890
55 *
56 * any improvements or extensions that they make and grant Carnegie the
57 * rights to redistribute these changes.
58 */
59
60#include "vga.h"
61
62#include <sys/param.h>
63#include <sys/systm.h>
64#include <sys/kernel.h>
65#include <sys/device.h>
66#include <sys/malloc.h>
67#include <sys/queue.h>
68#include <machine/bus.h>
69
70#include <dev/ic/mc6845reg.h>
71#include <dev/ic/pcdisplayvar.h>
72#include <dev/ic/vgareg.h>
73
74#include <dev/wscons/wsdisplayvar.h>
75#include <dev/wscons/wsconsio.h>
76#include <dev/wscons/unicode.h>
77
78#include <dev/ic/vgavar.h>
79#include <dev/ic/pcdisplay.h>
80
81static struct vgafont {
82 char name[WSFONT_NAME_SIZE32];
83 int height;
84 int encoding;
85#ifdef notyet
86 int firstchar, numchars;
87#endif
88 int slot;
89 void *fontdata;
90} vga_builtinfont = {
91 .name = "builtin",
92 .height = 16,
93 .encoding = WSDISPLAY_FONTENC_IBM1,
94#ifdef notyet
95 .firstchar = 0,
96 .numchars = 256,
97#endif
98 .slot = 0,
99 .fontdata = NULL((void *)0)
100};
101
102int vgaconsole, vga_console_type, vga_console_attached;
103struct vgascreen vga_console_screen;
104struct vga_config vga_console_vc;
105
106int vga_selectfont(struct vga_config *, struct vgascreen *,
107 const char *, const char *);
108void vga_init_screen(struct vga_config *, struct vgascreen *,
109 const struct wsscreen_descr *, int, uint32_t *);
110void vga_init(struct vga_config *, bus_space_tag_t, bus_space_tag_t);
111void vga_setfont(struct vga_config *, struct vgascreen *);
112void vga_pick_monitor_type(struct vga_config *);
113
114int vga_mapchar(void *, int, unsigned int *);
115int vga_putchar(void *, int, int, u_int, uint32_t);
116int vga_pack_attr(void *, int, int, int, uint32_t *);
117int vga_copyrows(void *, int, int, int);
118void vga_unpack_attr(void *, uint32_t, int *, int *, int *);
119
120static const struct wsdisplay_emulops vga_emulops = {
121 pcdisplay_cursor,
122 vga_mapchar,
123 vga_putchar,
124 pcdisplay_copycols,
125 pcdisplay_erasecols,
126 vga_copyrows,
127 pcdisplay_eraserows,
128 vga_pack_attr,
129 vga_unpack_attr
130};
131
132/*
133 * translate WS(=ANSI) color codes to standard pc ones
134 */
135static const unsigned char fgansitopc[] = {
136#ifdef __alpha__
137 /*
138 * XXX DEC HAS SWITCHED THE CODES FOR BLUE AND RED!!!
139 * XXX We should probably not bother with this
140 * XXX (reinitialize the palette registers).
141 */
142 FG_BLACK0, FG_BLUE1, FG_GREEN2, FG_CYAN3, FG_RED4,
143 FG_MAGENTA5, FG_BROWN6, FG_LIGHTGREY7
144#else
145 FG_BLACK0, FG_RED4, FG_GREEN2, FG_BROWN6, FG_BLUE1,
146 FG_MAGENTA5, FG_CYAN3, FG_LIGHTGREY7
147#endif
148}, bgansitopc[] = {
149#ifdef __alpha__
150 BG_BLACK0x00, BG_BLUE0x10, BG_GREEN0x20, BG_CYAN0x30, BG_RED0x40,
151 BG_MAGENTA0x50, BG_BROWN0x60, BG_LIGHTGREY0x70
152#else
153 BG_BLACK0x00, BG_RED0x40, BG_GREEN0x20, BG_BROWN0x60, BG_BLUE0x10,
154 BG_MAGENTA0x50, BG_CYAN0x30, BG_LIGHTGREY0x70
155#endif
156};
157
158/*
159 * translate standard pc color codes to WS(=ANSI) ones
160 */
161static const u_int8_t pctoansi[] = {
162#ifdef __alpha__
163 WSCOL_BLACK0, WSCOL_RED1, WSCOL_GREEN2, WSCOL_BROWN3,
164 WSCOL_BLUE4, WSCOL_MAGENTA5, WSCOL_CYAN6, WSCOL_WHITE7
165#else
166 WSCOL_BLACK0, WSCOL_BLUE4, WSCOL_GREEN2, WSCOL_CYAN6,
167 WSCOL_RED1, WSCOL_MAGENTA5, WSCOL_BROWN3, WSCOL_WHITE7
168#endif
169};
170
171
172const struct wsscreen_descr vga_stdscreen = {
173 "80x25", 80, 25,
174 &vga_emulops,
175 8, 16,
176 WSSCREEN_WSCOLORS1 | WSSCREEN_HILIT4 | WSSCREEN_BLINK8
177}, vga_stdscreen_mono = {
178 "80x25", 80, 25,
179 &vga_emulops,
180 8, 16,
181 WSSCREEN_HILIT4 | WSSCREEN_UNDERLINE16 | WSSCREEN_BLINK8 | WSSCREEN_REVERSE2
182}, vga_stdscreen_bf = {
183 "80x25bf", 80, 25,
184 &vga_emulops,
185 8, 16,
186 WSSCREEN_WSCOLORS1 | WSSCREEN_BLINK8
187}, vga_40lscreen = {
188 "80x40", 80, 40,
189 &vga_emulops,
190 8, 10,
191 WSSCREEN_WSCOLORS1 | WSSCREEN_HILIT4 | WSSCREEN_BLINK8
192}, vga_40lscreen_mono = {
193 "80x40", 80, 40,
194 &vga_emulops,
195 8, 10,
196 WSSCREEN_HILIT4 | WSSCREEN_UNDERLINE16 | WSSCREEN_BLINK8 | WSSCREEN_REVERSE2
197}, vga_40lscreen_bf = {
198 "80x40bf", 80, 40,
199 &vga_emulops,
200 8, 10,
201 WSSCREEN_WSCOLORS1 | WSSCREEN_BLINK8
202}, vga_50lscreen = {
203 "80x50", 80, 50,
204 &vga_emulops,
205 8, 8,
206 WSSCREEN_WSCOLORS1 | WSSCREEN_HILIT4 | WSSCREEN_BLINK8
207}, vga_50lscreen_mono = {
208 "80x50", 80, 50,
209 &vga_emulops,
210 8, 8,
211 WSSCREEN_HILIT4 | WSSCREEN_UNDERLINE16 | WSSCREEN_BLINK8 | WSSCREEN_REVERSE2
212}, vga_50lscreen_bf = {
213 "80x50bf", 80, 50,
214 &vga_emulops,
215 8, 8,
216 WSSCREEN_WSCOLORS1 | WSSCREEN_BLINK8
217};
218
219#define VGA_SCREEN_CANTWOFONTS(type)(!((type)->capabilities & 4)) (!((type)->capabilities & WSSCREEN_HILIT4))
220
221const struct wsscreen_descr *_vga_scrlist[] = {
222 &vga_stdscreen,
223 &vga_stdscreen_bf,
224 &vga_40lscreen,
225 &vga_40lscreen_bf,
226 &vga_50lscreen,
227 &vga_50lscreen_bf,
228 /* XXX other formats, graphics screen? */
229}, *_vga_scrlist_mono[] = {
230 &vga_stdscreen_mono,
231 &vga_40lscreen_mono,
232 &vga_50lscreen_mono,
233 /* XXX other formats, graphics screen? */
234};
235
236const struct wsscreen_list vga_screenlist = {
237 sizeof(_vga_scrlist) / sizeof(struct wsscreen_descr *),
238 _vga_scrlist
239}, vga_screenlist_mono = {
240 sizeof(_vga_scrlist_mono) / sizeof(struct wsscreen_descr *),
241 _vga_scrlist_mono
242};
243
244int vga_ioctl(void *, u_long, caddr_t, int, struct proc *);
245paddr_t vga_mmap(void *, off_t, int);
246int vga_alloc_screen(void *, const struct wsscreen_descr *,
247 void **, int *, int *, uint32_t *);
248void vga_free_screen(void *, void *);
249int vga_show_screen(void *, void *, int,
250 void (*) (void *, int, int), void *);
251int vga_load_font(void *, void *, struct wsdisplay_font *);
252int vga_list_font(void *, struct wsdisplay_font *);
253void vga_scrollback(void *, void *, int);
254void vga_burner(void *v, u_int on, u_int flags);
255int vga_getchar(void *, int, int, struct wsdisplay_charcell *);
256
257void vga_doswitch(void *);
258
259const struct wsdisplay_accessops vga_accessops = {
260 .ioctl = vga_ioctl,
261 .mmap = vga_mmap,
262 .alloc_screen = vga_alloc_screen,
263 .free_screen = vga_free_screen,
264 .show_screen = vga_show_screen,
265 .load_font = vga_load_font,
266 .list_font = vga_list_font,
267 .scrollback = vga_scrollback,
268 .getchar = vga_getchar,
269 .burn_screen = vga_burner
270};
271
272/*
273 * The following functions implement back-end configuration grabbing
274 * and attachment.
275 */
276int
277vga_common_probe(bus_space_tag_t iot, bus_space_tag_t memt)
278{
279 bus_space_handle_t ioh_vga, ioh_6845, memh;
280 u_int8_t regval;
281 u_int16_t vgadata;
282 int gotio_vga, gotio_6845, gotmem, mono, rv;
283 int dispoffset;
284
285 gotio_vga = gotio_6845 = gotmem = rv = 0;
286
287 if (bus_space_map(iot, 0x3c0, 0x10, 0, &ioh_vga))
288 goto bad;
289 gotio_vga = 1;
290
291 /* read "misc output register" */
292 regval = bus_space_read_1(iot, ioh_vga, 0xc)((iot)->read_1((ioh_vga), (0xc)));
293 mono = !(regval & 1);
294
295 if (bus_space_map(iot, (mono ? 0x3b0 : 0x3d0), 0x10, 0, &ioh_6845))
296 goto bad;
297 gotio_6845 = 1;
298
299 if (bus_space_map(memt, 0xa0000, 0x20000, 0, &memh))
300 goto bad;
301 gotmem = 1;
302
303 dispoffset = (mono ? 0x10000 : 0x18000);
304
305 vgadata = bus_space_read_2(memt, memh, dispoffset)((memt)->read_2((memh), (dispoffset)));
306 bus_space_write_2(memt, memh, dispoffset, 0xa55a)((memt)->write_2((memh), (dispoffset), (0xa55a)));
307 if (bus_space_read_2(memt, memh, dispoffset)((memt)->read_2((memh), (dispoffset))) != 0xa55a)
308 goto bad;
309 bus_space_write_2(memt, memh, dispoffset, vgadata)((memt)->write_2((memh), (dispoffset), (vgadata)));
310
311 /*
312 * check if this is really a VGA
313 * (try to write "Color Select" register as XFree86 does)
314 * XXX check before if at least EGA?
315 */
316 /* reset state */
317 (void) bus_space_read_1(iot, ioh_6845, 10)((iot)->read_1((ioh_6845), (10)));
318 bus_space_write_1(iot, ioh_vga, VGA_ATC_INDEX,((iot)->write_1((ioh_vga), (0), (20 | 0x20)))
319 20 | 0x20)((iot)->write_1((ioh_vga), (0), (20 | 0x20))); /* colselect | enable */
320 regval = bus_space_read_1(iot, ioh_vga, VGA_ATC_DATAR)((iot)->read_1((ioh_vga), (1)));
321 /* toggle the implemented bits */
322 bus_space_write_1(iot, ioh_vga, VGA_ATC_DATAW, regval ^ 0x0f)((iot)->write_1((ioh_vga), (0), (regval ^ 0x0f)));
323 bus_space_write_1(iot, ioh_vga, VGA_ATC_INDEX,((iot)->write_1((ioh_vga), (0), (20 | 0x20)))
324 20 | 0x20)((iot)->write_1((ioh_vga), (0), (20 | 0x20)));
325 /* read back */
326 if (bus_space_read_1(iot, ioh_vga, VGA_ATC_DATAR)((iot)->read_1((ioh_vga), (1))) != (regval ^ 0x0f))
327 goto bad;
328 /* restore contents */
329 bus_space_write_1(iot, ioh_vga, VGA_ATC_DATAW, regval)((iot)->write_1((ioh_vga), (0), (regval)));
330
331 rv = 1;
332bad:
333 if (gotio_vga)
334 bus_space_unmap(iot, ioh_vga, 0x10);
335 if (gotio_6845)
336 bus_space_unmap(iot, ioh_6845, 0x10);
337 if (gotmem)
338 bus_space_unmap(memt, memh, 0x20000);
339
340 return (rv);
341}
342
343/*
344 * We want at least ASCII 32..127 be present in the
345 * first font slot.
346 */
347int
348vga_selectfont(struct vga_config *vc, struct vgascreen *scr, const char *name1,
349 const char *name2) /* NULL: take first found */
350{
351 const struct wsscreen_descr *type = scr->pcs.type;
352 struct vgafont *f1, *f2;
353 int i;
354
355 f1 = f2 = 0;
356
357 for (i = 0; i < VGA_MAXFONT8; i++) {
358 struct vgafont *f = vc->vc_fonts[i];
359 if (!f || f->height != type->fontheight)
360 continue;
361 if (!f1 && (!name1 || !*name1 ||
362 !strncmp(name1, f->name, WSFONT_NAME_SIZE32))) {
363 f1 = f;
364 continue;
365 }
366 if (!f2 &&
367 VGA_SCREEN_CANTWOFONTS(type)(!((type)->capabilities & 4)) &&
368 (!name2 || !*name2 ||
369 !strncmp(name2, f->name, WSFONT_NAME_SIZE32))) {
370 f2 = f;
371 continue;
372 }
373 }
374
375 /*
376 * The request fails if no primary font was found,
377 * or if a second font was requested but not found.
378 */
379 if (f1 && (!name2 || !*name2 || f2)) {
380#ifdef VGAFONTDEBUG
381 if (scr != &vga_console_screen || vga_console_attached) {
382 printf("vga (%s): font1=%s (slot %d)", type->name,
383 f1->name, f1->slot);
384 if (f2)
385 printf(", font2=%s (slot %d)",
386 f2->name, f2->slot);
387 printf("\n");
388 }
389#endif
390 scr->fontset1 = f1;
391 scr->fontset2 = f2;
392 return (0);
393 }
394 return (ENXIO6);
395}
396
397void
398vga_init_screen(struct vga_config *vc, struct vgascreen *scr,
399 const struct wsscreen_descr *type, int existing, uint32_t *attrp)
400{
401 int cpos;
402 int res;
403
404 scr->cfg = vc;
405 scr->pcs.hdl = (struct pcdisplay_handle *)&vc->hdl;
406 scr->pcs.type = type;
407 scr->pcs.active = 0;
408 scr->mindispoffset = 0;
409 scr->maxdispoffset = 0x8000 - type->nrows * type->ncols * 2;
410
411 if (existing) {
412 cpos = vga_6845_read(&vc->hdl, cursorh)_pcdisplay_6845_read(&(&vc->hdl)->vh_ph, __builtin_offsetof
(struct reg_mc6845, cursorh)) << 8;
413 cpos |= vga_6845_read(&vc->hdl, cursorl)_pcdisplay_6845_read(&(&vc->hdl)->vh_ph, __builtin_offsetof
(struct reg_mc6845, cursorl));
414
415 /* make sure we have a valid cursor position */
416 if (cpos < 0 || cpos >= type->nrows * type->ncols)
417 cpos = 0;
418
419 scr->pcs.dispoffset = vga_6845_read(&vc->hdl, startadrh)_pcdisplay_6845_read(&(&vc->hdl)->vh_ph, __builtin_offsetof
(struct reg_mc6845, startadrh)) << 9;
420 scr->pcs.dispoffset |= vga_6845_read(&vc->hdl, startadrl)_pcdisplay_6845_read(&(&vc->hdl)->vh_ph, __builtin_offsetof
(struct reg_mc6845, startadrl)) << 1;
421
422 /* make sure we have a valid memory offset */
423 if (scr->pcs.dispoffset < scr->mindispoffset ||
424 scr->pcs.dispoffset > scr->maxdispoffset)
425 scr->pcs.dispoffset = scr->mindispoffset;
426 } else {
427 cpos = 0;
428 scr->pcs.dispoffset = scr->mindispoffset;
429 }
430 scr->pcs.visibleoffset = scr->pcs.dispoffset;
431 scr->vga_rollover = 0;
432
433 scr->pcs.vc_crow = cpos / type->ncols;
434 scr->pcs.vc_ccol = cpos % type->ncols;
435 pcdisplay_cursor_init(&scr->pcs, existing);
436
437#ifdef __alpha__
438 if (!vc->hdl.vh_mono)
439 /*
440 * DEC firmware uses a blue background.
441 */
442 res = vga_pack_attr(scr, WSCOL_WHITE7, WSCOL_BLUE4,
443 WSATTR_WSCOLORS16, attrp);
444 else
445#endif
446 res = vga_pack_attr(scr, 0, 0, 0, attrp);
447#ifdef DIAGNOSTIC1
448 if (res)
449 panic("vga_init_screen: attribute botch");
450#endif
451
452 scr->pcs.mem = NULL((void *)0);
453
454 scr->fontset1 = scr->fontset2 = 0;
455 if (vga_selectfont(vc, scr, 0, 0)) {
456 if (scr == &vga_console_screen)
457 panic("vga_init_screen: no font");
458 else
459 printf("vga_init_screen: no font\n");
460 }
461
462 vc->nscreens++;
463 LIST_INSERT_HEAD(&vc->screens, scr, next)do { if (((scr)->next.le_next = (&vc->screens)->
lh_first) != ((void *)0)) (&vc->screens)->lh_first->
next.le_prev = &(scr)->next.le_next; (&vc->screens
)->lh_first = (scr); (scr)->next.le_prev = &(&vc
->screens)->lh_first; } while (0);
464}
465
466void
467vga_init(struct vga_config *vc, bus_space_tag_t iot, bus_space_tag_t memt)
468{
469 struct vga_handle *vh = &vc->hdl;
470 u_int8_t mor;
471 int i;
472
473 vh->vh_iotvh_ph.ph_iot = iot;
474 vh->vh_memtvh_ph.ph_memt = memt;
475
476 if (bus_space_map(vh->vh_iotvh_ph.ph_iot, 0x3c0, 0x10, 0, &vh->vh_ioh_vga))
477 panic("vga_common_setup: can't map vga i/o");
478
479 /* read "misc output register" */
480 mor = bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, 0xc)((vh->vh_ph.ph_iot)->read_1((vh->vh_ioh_vga), (0xc))
);
481 vh->vh_mono = !(mor & 1);
482
483 if (bus_space_map(vh->vh_iotvh_ph.ph_iot, (vh->vh_mono ? 0x3b0 : 0x3d0), 0x10, 0,
484 &vh->vh_ioh_6845vh_ph.ph_ioh_6845))
485 panic("vga_common_setup: can't map 6845 i/o");
486
487 if (bus_space_map(vh->vh_memtvh_ph.ph_memt, 0xa0000, 0x20000, 0, &vh->vh_allmemh))
488 panic("vga_common_setup: can't map mem space");
489
490 if (bus_space_subregion(vh->vh_memtvh_ph.ph_memt, vh->vh_allmemh,
491 (vh->vh_mono ? 0x10000 : 0x18000), 0x8000,
492 &vh->vh_memhvh_ph.ph_memh))
493 panic("vga_common_setup: mem subrange failed");
494
495#ifdef __alpha__
496 vga_pick_monitor_type(vc);
497#endif
498
499 vc->nscreens = 0;
500 LIST_INIT(&vc->screens)do { ((&vc->screens)->lh_first) = ((void *)0); } while
(0);
501 vc->active = NULL((void *)0);
502#ifdef __alpha__
503 if (vc->custom_list.screens != NULL((void *)0))
504 vc->currenttype = vc->custom_list.screens[0];
505 else
506#endif
507 vc->currenttype =
508 vh->vh_mono ? &vga_stdscreen_mono : &vga_stdscreen;
509
510 vc->vc_fonts[0] = &vga_builtinfont;
511 for (i = 1; i < VGA_MAXFONT8; i++)
512 vc->vc_fonts[i] = NULL((void *)0);
513
514 vc->currentfontset1 = vc->currentfontset2 = 0;
515
516 vga_save_palette(vc);
517}
518
519struct vga_config *
520vga_common_attach(struct device *self, bus_space_tag_t iot,
521 bus_space_tag_t memt, int type)
522{
523 return vga_extended_attach(self, iot, memt, type, NULL((void *)0));
524}
525
526struct vga_config *
527vga_extended_attach(struct device *self, bus_space_tag_t iot,
528 bus_space_tag_t memt, int type, paddr_t (*map)(void *, off_t, int))
529{
530 int console;
531 struct vga_config *vc;
532 struct wsemuldisplaydev_attach_args aa;
533
534 console = vga_is_console(iot, type);
535 if (console)
536 vga_console_attached = 1;
537
538 if (type == -1)
539 return NULL((void *)0);
540
541 if (console) {
542 vc = &vga_console_vc;
543 } else {
544 vc = malloc(sizeof(*vc), M_DEVBUF2, M_NOWAIT0x0002 | M_ZERO0x0008);
545 if (vc == NULL((void *)0))
546 return NULL((void *)0);
547 vga_init(vc, iot, memt);
548 }
549
550 vc->vc_softc = self;
551 vc->vc_type = type;
552 vc->vc_mmap = map;
553
554 aa.console = console;
555#ifdef __alpha__
556 if (vc->custom_list.screens != NULL((void *)0))
557 aa.scrdata = &vc->custom_list;
558 else
559#endif
560 aa.scrdata =
561 vc->hdl.vh_mono ? &vga_screenlist_mono : &vga_screenlist;
562
563 aa.accessops = &vga_accessops;
564 aa.accesscookie = vc;
565 aa.defaultscreens = 0;
566
567 config_found_sm(self, &aa, wsemuldisplaydevprint,
568 wsemuldisplaydevsubmatch);
569
570 return vc;
571}
572
573int
574vga_cnattach(bus_space_tag_t iot, bus_space_tag_t memt, int type, int check)
575{
576 uint32_t defattr;
577 const struct wsscreen_descr *scr;
578
579 if (check && !vga_common_probe(iot, memt))
580 return (ENXIO6);
581
582 /* set up bus-independent VGA configuration */
583 vga_init(&vga_console_vc, iot, memt);
584 scr = vga_console_vc.currenttype;
585 vga_init_screen(&vga_console_vc, &vga_console_screen, scr, 1, &defattr);
586
587 vga_console_screen.pcs.active = 1;
588 vga_console_vc.active = &vga_console_screen;
589
590 wsdisplay_cnattach(scr, &vga_console_screen,
591 vga_console_screen.pcs.vc_ccol,
592 vga_console_screen.pcs.vc_crow,
593 defattr);
594
595 vgaconsole = 1;
596 vga_console_type = type;
597 return (0);
598}
599
600int
601vga_is_console(bus_space_tag_t iot, int type)
602{
603 if (vgaconsole &&
604 !vga_console_attached &&
605 iot == vga_console_vc.hdl.vh_iotvh_ph.ph_iot &&
606 (vga_console_type == -1 || (type == vga_console_type)))
607 return (1);
608 return (0);
609}
610
611int
612vga_ioctl(void *v, u_long cmd, caddr_t data, int flag, struct proc *p)
613{
614 struct vga_config *vc = v;
615 int mode;
616#if NVGA_PCI1 > 0
617 int error;
618
619 if (vc->vc_type == WSDISPLAY_TYPE_PCIVGA8 &&
620 (error = vga_pci_ioctl(v, cmd, data, flag, p)) != ENOTTY25)
621 return (error);
622#endif
623
624 switch (cmd) {
625 case WSDISPLAYIO_GTYPE((unsigned long)0x40000000 | ((sizeof(u_int) & 0x1fff) <<
16) | ((('W')) << 8) | ((64))):
626 *(int *)data = vc->vc_type;
627 /* XXX should get detailed hardware information here */
628 break;
629
630 case WSDISPLAYIO_SMODE((unsigned long)0x80000000 | ((sizeof(u_int) & 0x1fff) <<
16) | ((('W')) << 8) | ((76))):
631 mode = *(u_int *)data;
632 if (mode == WSDISPLAYIO_MODE_EMUL0) {
633 vga_restore_fonts(vc);
634 vga_restore_palette(vc);
635 }
636 break;
637
638 case WSDISPLAYIO_GVIDEO((unsigned long)0x40000000 | ((sizeof(u_int) & 0x1fff) <<
16) | ((('W')) << 8) | ((68))):
639 case WSDISPLAYIO_SVIDEO((unsigned long)0x80000000 | ((sizeof(u_int) & 0x1fff) <<
16) | ((('W')) << 8) | ((69))):
640 break;
641
642 case WSDISPLAYIO_GINFO((unsigned long)0x40000000 | ((sizeof(struct wsdisplay_fbinfo
) & 0x1fff) << 16) | ((('W')) << 8) | ((65))):
643 case WSDISPLAYIO_GETCMAP((unsigned long)0x80000000 | ((sizeof(struct wsdisplay_cmap) &
0x1fff) << 16) | ((('W')) << 8) | ((66))):
644 case WSDISPLAYIO_PUTCMAP((unsigned long)0x80000000 | ((sizeof(struct wsdisplay_cmap) &
0x1fff) << 16) | ((('W')) << 8) | ((67))):
645 case WSDISPLAYIO_GCURPOS((unsigned long)0x40000000 | ((sizeof(struct wsdisplay_curpos
) & 0x1fff) << 16) | ((('W')) << 8) | ((70))):
646 case WSDISPLAYIO_SCURPOS((unsigned long)0x80000000 | ((sizeof(struct wsdisplay_curpos
) & 0x1fff) << 16) | ((('W')) << 8) | ((71))):
647 case WSDISPLAYIO_GCURMAX((unsigned long)0x40000000 | ((sizeof(struct wsdisplay_curpos
) & 0x1fff) << 16) | ((('W')) << 8) | ((72))):
648 case WSDISPLAYIO_GCURSOR(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof
(struct wsdisplay_cursor) & 0x1fff) << 16) | ((('W'
)) << 8) | ((73))):
649 case WSDISPLAYIO_SCURSOR((unsigned long)0x80000000 | ((sizeof(struct wsdisplay_cursor
) & 0x1fff) << 16) | ((('W')) << 8) | ((74))):
650 default:
651 /* NONE of these operations are by the generic VGA driver. */
652 return ENOTTY25;
653 }
654
655 return (0);
656}
657
658paddr_t
659vga_mmap(void *v, off_t offset, int prot)
660{
661 struct vga_config *vc = v;
662
663 if (vc->vc_mmap != NULL((void *)0))
664 return (*vc->vc_mmap)(v, offset, prot);
665
666 return (paddr_t)-1;
667}
668
669int
670vga_alloc_screen(void *v, const struct wsscreen_descr *type, void **cookiep,
671 int *curxp, int *curyp, uint32_t *defattrp)
672{
673 struct vga_config *vc = v;
674 struct vgascreen *scr;
675
676 if (vc->nscreens == 1) {
677 /*
678 * When allocating the second screen, get backing store
679 * for the first one too.
680 * XXX We could be more clever and use video RAM.
681 */
682 scr = LIST_FIRST(&vc->screens)((&vc->screens)->lh_first);
683 scr->pcs.mem = mallocarray(scr->pcs.type->ncols,
684 scr->pcs.type->nrows * 2, M_DEVBUF2, M_WAITOK0x0001);
685 }
686
687 scr = malloc(sizeof(struct vgascreen), M_DEVBUF2, M_WAITOK0x0001);
688 vga_init_screen(vc, scr, type, vc->nscreens == 0, defattrp);
689
690 if (vc->nscreens == 1) {
691 scr->pcs.active = 1;
692 vc->active = scr;
693 vc->currenttype = type;
694 } else {
695 scr->pcs.mem = mallocarray(type->ncols,
696 type->nrows * 2, M_DEVBUF2, M_WAITOK0x0001);
697 pcdisplay_eraserows(&scr->pcs, 0, type->nrows, *defattrp);
698 }
699
700 *cookiep = scr;
701 *curxp = scr->pcs.vc_ccol;
702 *curyp = scr->pcs.vc_crow;
703
704 return (0);
705}
706
707void
708vga_free_screen(void *v, void *cookie)
709{
710 struct vgascreen *vs = cookie;
711 struct vga_config *vc = vs->cfg;
712
713 LIST_REMOVE(vs, next)do { if ((vs)->next.le_next != ((void *)0)) (vs)->next.
le_next->next.le_prev = (vs)->next.le_prev; *(vs)->next
.le_prev = (vs)->next.le_next; ((vs)->next.le_prev) = (
(void *)-1); ((vs)->next.le_next) = ((void *)-1); } while (
0);
714 vc->nscreens--;
715 if (vs != &vga_console_screen) {
716 /*
717 * deallocating the one but last screen
718 * removes backing store for the last one
719 */
720 if (vc->nscreens == 1)
721 free(LIST_FIRST(&vc->screens)((&vc->screens)->lh_first)->pcs.mem, M_DEVBUF2, 0);
722
723 /* Last screen has no backing store */
724 if (vc->nscreens != 0)
725 free(vs->pcs.mem, M_DEVBUF2, 0);
726
727 free(vs, M_DEVBUF2, sizeof *vs);
728 } else
729 panic("vga_free_screen: console");
730
731 if (vc->active == vs)
732 vc->active = NULL((void *)0);
733}
734
735void
736vga_setfont(struct vga_config *vc, struct vgascreen *scr)
737{
738 int fontslot1, fontslot2;
739
740 fontslot1 = (scr->fontset1 ? scr->fontset1->slot : 0);
741 fontslot2 = (scr->fontset2 ? scr->fontset2->slot : fontslot1);
742 if (vc->currentfontset1 != fontslot1 ||
743 vc->currentfontset2 != fontslot2) {
744 vga_setfontset(&vc->hdl, fontslot1, fontslot2);
745 vc->currentfontset1 = fontslot1;
746 vc->currentfontset2 = fontslot2;
747 }
748}
749
750int
751vga_show_screen(void *v, void *cookie, int waitok, void (*cb)(void *, int, int),
752 void *cbarg)
753{
754 struct vgascreen *scr = cookie, *oldscr;
755 struct vga_config *vc = scr->cfg;
756
757 oldscr = vc->active; /* can be NULL! */
758 if (scr == oldscr) {
759 return (0);
760 }
761
762 vc->wantedscreen = cookie;
763 vc->switchcb = cb;
764 vc->switchcbarg = cbarg;
765 if (cb) {
766 timeout_set(&vc->vc_switch_timeout, vga_doswitch, vc);
767 timeout_add(&vc->vc_switch_timeout, 0);
768 return (EAGAIN35);
769 }
770
771 vga_doswitch(vc);
772 return (0);
773}
774
775void
776vga_doswitch(void *arg)
777{
778 struct vga_config *vc = arg;
779 struct vgascreen *scr, *oldscr;
780 struct vga_handle *vh = &vc->hdl;
781 const struct wsscreen_descr *type;
782 int s;
783
784 scr = vc->wantedscreen;
785 if (!scr) {
786 printf("vga_doswitch: disappeared\n");
787 (*vc->switchcb)(vc->switchcbarg, EIO5, 0);
788 return;
789 }
790
791 type = scr->pcs.type;
792 oldscr = vc->active; /* can be NULL! */
793 if (scr == oldscr)
794 return;
795 s = spltty()splraise(0x9);
796#ifdef DIAGNOSTIC1
797 if (oldscr) {
798 if (!oldscr->pcs.active)
799 panic("vga_show_screen: not active");
800 if (oldscr->pcs.type != vc->currenttype)
801 panic("vga_show_screen: bad type");
802 }
803 if (scr->pcs.active)
804 panic("vga_show_screen: active");
805#endif
806
807 scr->vga_rollover = 0;
808
809 if (oldscr) {
810 const struct wsscreen_descr *oldtype = oldscr->pcs.type;
811
812 oldscr->pcs.active = 0;
813 bus_space_read_region_2(vh->vh_memt, vh->vh_memh,((vh->vh_ph.ph_memt)->read_region_2((vh->vh_ph.ph_memh
), (oldscr->pcs.dispoffset), (oldscr->pcs.mem), (oldtype
->ncols * oldtype->nrows)))
814 oldscr->pcs.dispoffset, oldscr->pcs.mem,((vh->vh_ph.ph_memt)->read_region_2((vh->vh_ph.ph_memh
), (oldscr->pcs.dispoffset), (oldscr->pcs.mem), (oldtype
->ncols * oldtype->nrows)))
815 oldtype->ncols * oldtype->nrows)((vh->vh_ph.ph_memt)->read_region_2((vh->vh_ph.ph_memh
), (oldscr->pcs.dispoffset), (oldscr->pcs.mem), (oldtype
->ncols * oldtype->nrows)));
816 }
817
818 if (vc->currenttype != type) {
819 vga_setscreentype(vh, type);
820 vc->currenttype = type;
821 }
822
823 vga_restore_fonts(vc);
824 vga_setfont(vc, scr);
825 vga_restore_palette(vc);
826
827 scr->pcs.visibleoffset = scr->pcs.dispoffset = scr->mindispoffset;
828 if (!oldscr || (scr->pcs.dispoffset != oldscr->pcs.dispoffset)) {
829 vga_6845_write(vh, startadrh, scr->pcs.dispoffset >> 9)_pcdisplay_6845_write(&(vh)->vh_ph, __builtin_offsetof
(struct reg_mc6845, startadrh), scr->pcs.dispoffset >>
9);
830 vga_6845_write(vh, startadrl, scr->pcs.dispoffset >> 1)_pcdisplay_6845_write(&(vh)->vh_ph, __builtin_offsetof
(struct reg_mc6845, startadrl), scr->pcs.dispoffset >>
1);
831 }
832
833 bus_space_write_region_2(vh->vh_memt, vh->vh_memh,((vh->vh_ph.ph_memt)->write_region_2((vh->vh_ph.ph_memh
), (scr->pcs.dispoffset), (scr->pcs.mem), (type->ncols
* type->nrows)))
834 scr->pcs.dispoffset, scr->pcs.mem,((vh->vh_ph.ph_memt)->write_region_2((vh->vh_ph.ph_memh
), (scr->pcs.dispoffset), (scr->pcs.mem), (type->ncols
* type->nrows)))
835 type->ncols * type->nrows)((vh->vh_ph.ph_memt)->write_region_2((vh->vh_ph.ph_memh
), (scr->pcs.dispoffset), (scr->pcs.mem), (type->ncols
* type->nrows)));
836 scr->pcs.active = 1;
837 splx(s)spllower(s);
838
839 vc->active = scr;
840
841 pcdisplay_cursor_reset(&scr->pcs);
842 pcdisplay_cursor(&scr->pcs, scr->pcs.cursoron,
843 scr->pcs.vc_crow, scr->pcs.vc_ccol);
844
845 vc->wantedscreen = 0;
846 if (vc->switchcb)
847 (*vc->switchcb)(vc->switchcbarg, 0, 0);
848}
849
850int
851vga_load_font(void *v, void *cookie, struct wsdisplay_font *data)
852{
853 struct vga_config *vc = v;
854 struct vgascreen *scr = cookie;
855 char *name2;
856 int res, slot;
857 struct vgafont *f;
858
859 if (data->data == NULL((void *)0)) {
860 if (scr == NULL((void *)0))
861 return EINVAL22;
862
863 if ((name2 = data->name) != NULL((void *)0)) {
864 while (*name2 && *name2 != ',')
865 name2++;
866 if (*name2)
867 *name2++ = '\0';
868 }
869 res = vga_selectfont(vc, scr, data->name, name2);
870 if (res == 0)
871 vga_setfont(vc, scr);
872 return (res);
873 }
874
875 if (data->fontwidth != 8 || data->stride != 1)
876 return (EINVAL22); /* XXX 1 byte per line */
877 if (data->firstchar != 0 || data->numchars != 256)
878 return (EINVAL22);
879
880 if (data->index < 0) {
881 for (slot = 0; slot < VGA_MAXFONT8; slot++)
882 if (!vc->vc_fonts[slot])
883 break;
884 } else
885 slot = data->index;
886
887 if (slot >= VGA_MAXFONT8)
888 return (ENOSPC28);
889
890 if (vc->vc_fonts[slot] != NULL((void *)0))
891 return (EEXIST17);
892 f = malloc(sizeof(struct vgafont), M_DEVBUF2, M_WAITOK0x0001 | M_CANFAIL0x0004);
893 if (f == NULL((void *)0))
894 return (ENOMEM12);
895 strlcpy(f->name, data->name, sizeof(f->name));
896 f->height = data->fontheight;
897 f->encoding = data->encoding;
898#ifdef notyet
899 f->firstchar = data->firstchar;
900 f->numchars = data->numchars;
901#endif
902#ifdef VGAFONTDEBUG
903 printf("vga: load %s (8x%d, enc %d) font to slot %d\n", f->name,
904 f->height, f->encoding, slot);
905#endif
906 vga_loadchars(&vc->hdl, slot, 0, 256, f->height, data->data);
907 f->slot = slot;
908 f->fontdata = data->data;
909 vc->vc_fonts[slot] = f;
910 data->cookie = f;
911 data->index = slot;
912
913 return (0);
914}
915
916int
917vga_list_font(void *v, struct wsdisplay_font *data)
918{
919 struct vga_config *vc = v;
920 struct vgafont *f;
921
922 if (data->index < 0 || data->index >= VGA_MAXFONT8)
923 return EINVAL22;
924
925 if ((f = vc->vc_fonts[data->index]) == NULL((void *)0))
926 return EINVAL22;
927
928 strlcpy(data->name, f->name, sizeof data->name);
929#ifdef notyet
930 data->firstchar = f->firstchar;
931 data->numchars = f->numchars;
932#else
933 data->firstchar = 0;
934 data->numchars = 256;
935#endif
936 data->encoding = f->encoding;
937 data->fontwidth = 8;
938 data->fontheight = f->height;
939 data->stride = 1;
940 data->bitorder = data->byteorder = WSDISPLAY_FONTORDER_L2R1;
941
942 return (0);
943}
944
945void
946vga_scrollback(void *v, void *cookie, int lines)
947{
948 struct vga_config *vc = v;
949 struct vgascreen *scr = cookie;
950 struct vga_handle *vh = &vc->hdl;
951
952 if (lines == 0) {
953 if (scr->pcs.visibleoffset == scr->pcs.dispoffset)
954 return;
955
956 scr->pcs.visibleoffset = scr->pcs.dispoffset; /* reset */
957 }
958 else {
959 int vga_scr_end;
960 int margin = scr->pcs.type->ncols * 2;
961 int ul, we, p, st;
962
963 vga_scr_end = (scr->pcs.dispoffset + scr->pcs.type->ncols *
964 scr->pcs.type->nrows * 2);
965 if (scr->vga_rollover > vga_scr_end + margin) {
966 ul = vga_scr_end;
967 we = scr->vga_rollover + scr->pcs.type->ncols * 2;
968 } else {
969 ul = 0;
970 we = 0x8000;
971 }
972 p = (scr->pcs.visibleoffset - ul + we) % we + lines *
973 (scr->pcs.type->ncols * 2);
974 st = (scr->pcs.dispoffset - ul + we) % we;
975 if (p < margin)
976 p = 0;
977 if (p > st - margin)
978 p = st;
979 scr->pcs.visibleoffset = (p + ul) % we;
980 }
981
982 /* update visible position */
983 vga_6845_write(vh, startadrh, scr->pcs.visibleoffset >> 9)_pcdisplay_6845_write(&(vh)->vh_ph, __builtin_offsetof
(struct reg_mc6845, startadrh), scr->pcs.visibleoffset >>
9);
984 vga_6845_write(vh, startadrl, scr->pcs.visibleoffset >> 1)_pcdisplay_6845_write(&(vh)->vh_ph, __builtin_offsetof
(struct reg_mc6845, startadrl), scr->pcs.visibleoffset >>
1);
985}
986
987int
988vga_pack_attr(void *id, int fg, int bg, int flags, uint32_t *attrp)
989{
990 struct vgascreen *scr = id;
991 struct vga_config *vc = scr->cfg;
992
993 if (vc->hdl.vh_mono) {
994 if (flags & WSATTR_WSCOLORS16)
995 return (EINVAL22);
996 if (flags & WSATTR_REVERSE1)
997 *attrp = 0x70;
998 else
999 *attrp = 0x07;
1000 if (flags & WSATTR_UNDERLINE8)
1001 *attrp |= FG_UNDERLINE0x01;
1002 if (flags & WSATTR_HILIT2)
1003 *attrp |= FG_INTENSE0x08;
1004 } else {
1005 if (flags & (WSATTR_UNDERLINE8 | WSATTR_REVERSE1))
1006 return (EINVAL22);
1007 if (flags & WSATTR_WSCOLORS16)
1008 *attrp = fgansitopc[fg & 7] | bgansitopc[bg & 7];
1009 else
1010 *attrp = 7;
1011 if ((flags & WSATTR_HILIT2) || (fg & 8) || (bg & 8))
1012 *attrp += 8;
1013 }
1014 if (flags & WSATTR_BLINK4)
1015 *attrp |= FG_BLINK0x80;
1016 return (0);
1017}
1018
1019void
1020vga_unpack_attr(void *id, uint32_t attr, int *fg, int *bg, int *ul)
1021{
1022 struct vgascreen *scr = id;
1023 struct vga_config *vc = scr->cfg;
1024
1025 if (vc->hdl.vh_mono) {
1026 *fg = (attr & 0x07) == 0x07 ? WSCOL_WHITE7 : WSCOL_BLACK0;
1027 *bg = attr & 0x70 ? WSCOL_WHITE7 : WSCOL_BLACK0;
1028 if (ul != NULL((void *)0))
1029 *ul = *fg != WSCOL_WHITE7 && (attr & 0x01) ? 1 : 0;
1030 } else {
1031 *fg = pctoansi[attr & 0x07];
1032 *bg = pctoansi[(attr & 0x70) >> 4];
1033 if (ul != NULL((void *)0))
1034 *ul = 0;
1035 }
1036 if (attr & FG_INTENSE0x08)
1037 *fg += 8;
1038}
1039
1040int
1041vga_copyrows(void *id, int srcrow, int dstrow, int nrows)
1042{
1043 struct vgascreen *scr = id;
1044 bus_space_tag_t memt = scr->pcs.hdl->ph_memt;
1045 bus_space_handle_t memh = scr->pcs.hdl->ph_memh;
1046 int ncols = scr->pcs.type->ncols;
1047 bus_size_t srcoff, dstoff;
1048 int s;
1049
1050 srcoff = srcrow * ncols + 0;
1051 dstoff = dstrow * ncols + 0;
1052
1053 s = spltty()splraise(0x9);
1054 if (scr->pcs.active) {
1055 if (dstrow == 0 && (srcrow + nrows == scr->pcs.type->nrows)) {
1056#ifdef PCDISPLAY_SOFTCURSOR
1057 int cursoron = scr->pcs.cursoron;
1058
1059 /* NOTE this assumes pcdisplay_cursor() never fails */
1060 if (cursoron)
1061 pcdisplay_cursor(&scr->pcs, 0,
1062 scr->pcs.vc_crow, scr->pcs.vc_ccol);
1063#endif
1064 /* scroll up whole screen */
1065 if ((scr->pcs.dispoffset + srcrow * ncols * 2)
1066 <= scr->maxdispoffset) {
1067 scr->pcs.dispoffset += srcrow * ncols * 2;
1068 } else {
1069 bus_space_copy_2(memt, memh,((memt)->copy_2((memh), (scr->pcs.dispoffset + srcoff *
2), (memh), (scr->mindispoffset), (nrows * ncols)))
1070 scr->pcs.dispoffset + srcoff * 2,((memt)->copy_2((memh), (scr->pcs.dispoffset + srcoff *
2), (memh), (scr->mindispoffset), (nrows * ncols)))
1071 memh, scr->mindispoffset,((memt)->copy_2((memh), (scr->pcs.dispoffset + srcoff *
2), (memh), (scr->mindispoffset), (nrows * ncols)))
1072 nrows * ncols)((memt)->copy_2((memh), (scr->pcs.dispoffset + srcoff *
2), (memh), (scr->mindispoffset), (nrows * ncols)));
1073 scr->vga_rollover = scr->pcs.dispoffset;
1074 scr->pcs.dispoffset = scr->mindispoffset;
1075 }
1076 scr->pcs.visibleoffset = scr->pcs.dispoffset;
1077 vga_6845_write(&scr->cfg->hdl, startadrh,_pcdisplay_6845_write(&(&scr->cfg->hdl)->vh_ph
, __builtin_offsetof(struct reg_mc6845, startadrh), scr->pcs
.dispoffset >> 9)
1078 scr->pcs.dispoffset >> 9)_pcdisplay_6845_write(&(&scr->cfg->hdl)->vh_ph
, __builtin_offsetof(struct reg_mc6845, startadrh), scr->pcs
.dispoffset >> 9);
1079 vga_6845_write(&scr->cfg->hdl, startadrl,_pcdisplay_6845_write(&(&scr->cfg->hdl)->vh_ph
, __builtin_offsetof(struct reg_mc6845, startadrl), scr->pcs
.dispoffset >> 1)
1080 scr->pcs.dispoffset >> 1)_pcdisplay_6845_write(&(&scr->cfg->hdl)->vh_ph
, __builtin_offsetof(struct reg_mc6845, startadrl), scr->pcs
.dispoffset >> 1);
1081#ifdef PCDISPLAY_SOFTCURSOR
1082 /* NOTE this assumes pcdisplay_cursor() never fails */
1083 if (cursoron)
1084 pcdisplay_cursor(&scr->pcs, 1,
1085 scr->pcs.vc_crow, scr->pcs.vc_ccol);
1086#endif
1087 } else {
1088 bus_space_copy_2(memt, memh,((memt)->copy_2((memh), (scr->pcs.dispoffset + srcoff *
2), (memh), (scr->pcs.dispoffset + dstoff * 2), (nrows * ncols
)))
1089 scr->pcs.dispoffset + srcoff * 2,((memt)->copy_2((memh), (scr->pcs.dispoffset + srcoff *
2), (memh), (scr->pcs.dispoffset + dstoff * 2), (nrows * ncols
)))
1090 memh, scr->pcs.dispoffset + dstoff * 2,((memt)->copy_2((memh), (scr->pcs.dispoffset + srcoff *
2), (memh), (scr->pcs.dispoffset + dstoff * 2), (nrows * ncols
)))
1091 nrows * ncols)((memt)->copy_2((memh), (scr->pcs.dispoffset + srcoff *
2), (memh), (scr->pcs.dispoffset + dstoff * 2), (nrows * ncols
)));
1092 }
1093 } else
1094 bcopy(&scr->pcs.mem[srcoff], &scr->pcs.mem[dstoff],
1095 nrows * ncols * 2);
1096 splx(s)spllower(s);
1097
1098 return 0;
1099}
1100
1101int _vga_mapchar(void *, struct vgafont *, int, unsigned int *);
1102
1103int
1104_vga_mapchar(void *id, struct vgafont *font, int uni, unsigned int *index)
1105{
1106
1107 switch (font->encoding) {
5
←
Control jumps to 'case 1:' at line 1117
→
1108 case WSDISPLAY_FONTENC_ISO0:
1109 if (uni < 256) {
1110 *index = uni;
1111 return (5);
1112 } else {
1113 *index = '?';
1114 return (0);
1115 }
1116 break;
1117 case WSDISPLAY_FONTENC_IBM1:
1118 return (pcdisplay_mapchar(id, uni, index));
6
←
Value assigned to field 'fontset2', which participates in a condition later
→
1119 default:
1120#ifdef VGAFONTDEBUG
1121 printf("_vga_mapchar: encoding=%d\n", font->encoding);
1122#endif
1123 *index = '?';
1124 return (0);
1125 }
1126}
1127
1128int
1129vga_mapchar(void *id, int uni, unsigned int *index)
1130{
1131 struct vgascreen *scr = id;
1132 unsigned int idx1, idx2;
1
'idx2' declared without an initial value
→
1133 int res1, res2;
1134
1135 res1 = 0;
1136 idx1 = ' '; /* space */
1137 if (scr->fontset1)
2
←
Assuming field 'fontset1' is non-null
→
3
←
Taking true branch
→
1138 res1 = _vga_mapchar(id, scr->fontset1, uni, &idx1);
4
←
Calling '_vga_mapchar'
→
7
←
Returning from '_vga_mapchar'
→
1139 res2 = -1;
1140 if (scr->fontset2) {
8
←
Assuming field 'fontset2' is null
→
9
←
Taking false branch
→
1141 KASSERT(VGA_SCREEN_CANTWOFONTS(scr->pcs.type))(((!((scr->pcs.type)->capabilities & 4))) ? (void)0
: __assert("diagnostic ", "/usr/src/sys/dev/ic/vga.c", 1141,
"VGA_SCREEN_CANTWOFONTS(scr->pcs.type)"));
1142 res2 = _vga_mapchar(id, scr->fontset2, uni, &idx2);
1143 }
1144 if (res2 >= res1) {
10
←
Assuming 'res2' is >= 'res1'
→
11
←
Taking true branch
→
1145 *index = idx2 | 0x0800; /* attribute bit 3 */
12
←
The left operand of '|' is a garbage value
1146 return (res2);
1147 }
1148 *index = idx1;
1149 return (res1);
1150}
1151
1152int
1153vga_putchar(void *c, int row, int col, u_int uc, uint32_t attr)
1154{
1155 struct vgascreen *scr = c;
1156 int rc;
1157 int s;
1158
1159 s = spltty()splraise(0x9);
1160 if (scr->pcs.active && scr->pcs.visibleoffset != scr->pcs.dispoffset)
1161 vga_scrollback(scr->cfg, scr, 0);
1162 rc = pcdisplay_putchar(c, row, col, uc, attr);
1163 splx(s)spllower(s);
1164
1165 return rc;
1166}
1167
1168void
1169vga_burner(void *v, u_int on, u_int flags)
1170{
1171 struct vga_config *vc = v;
1172 struct vga_handle *vh = &vc->hdl;
1173 u_int8_t r;
1174 int s;
1175
1176 s = splhigh()splraise(0xd);
1177 vga_ts_write(vh, syncreset, 0x01)_vga_ts_write(vh, __builtin_offsetof(struct reg_vgats, syncreset
), 0x01);
1178 if (on) {
1179 vga_ts_write(vh, mode, (vga_ts_read(vh, mode) & ~0x20))_vga_ts_write(vh, __builtin_offsetof(struct reg_vgats, mode),
(_vga_ts_read(vh, __builtin_offsetof(struct reg_vgats, mode)
) & ~0x20));
1180 r = vga_6845_read(vh, mode)_pcdisplay_6845_read(&(vh)->vh_ph, __builtin_offsetof(
struct reg_mc6845, mode)) | 0x80;
1181 DELAY(10000)(*delay_func)(10000);
1182 vga_6845_write(vh, mode, r)_pcdisplay_6845_write(&(vh)->vh_ph, __builtin_offsetof
(struct reg_mc6845, mode), r);
1183 } else {
1184 vga_ts_write(vh, mode, (vga_ts_read(vh, mode) | 0x20))_vga_ts_write(vh, __builtin_offsetof(struct reg_vgats, mode),
(_vga_ts_read(vh, __builtin_offsetof(struct reg_vgats, mode)
) | 0x20));
1185 if (flags & WSDISPLAY_BURN_VBLANK0x0001) {
1186 r = vga_6845_read(vh, mode)_pcdisplay_6845_read(&(vh)->vh_ph, __builtin_offsetof(
struct reg_mc6845, mode)) & ~0x80;
1187 DELAY(10000)(*delay_func)(10000);
1188 vga_6845_write(vh, mode, r)_pcdisplay_6845_write(&(vh)->vh_ph, __builtin_offsetof
(struct reg_mc6845, mode), r);
1189 }
1190 }
1191 vga_ts_write(vh, syncreset, 0x03)_vga_ts_write(vh, __builtin_offsetof(struct reg_vgats, syncreset
), 0x03);
1192 splx(s)spllower(s);
1193}
1194
1195int
1196vga_getchar(void *c, int row, int col, struct wsdisplay_charcell *cell)
1197{
1198 struct vga_config *vc = c;
1199
1200 return (pcdisplay_getchar(vc->active, row, col, cell));
1201}
1202
1203void
1204vga_save_palette(struct vga_config *vc)
1205{
1206 struct vga_handle *vh = &vc->hdl;
1207 uint i;
1208 uint8_t *palette = vc->vc_palette;
1209
1210 if (vh->vh_mono)
1211 return;
1212
1213 vga_raw_write(vh, VGA_DAC_MASK, 0xff)((vh->vh_ph.ph_iot)->write_1((vh->vh_ioh_vga), (0x06
), (0xff)));
1214 vga_raw_write(vh, VGA_DAC_READ, 0x00)((vh->vh_ph.ph_iot)->write_1((vh->vh_ioh_vga), (0x07
), (0x00)));
1215 for (i = 0; i < 3 * 256; i++)
1216 *palette++ = vga_raw_read(vh, VGA_DAC_DATA)((vh->vh_ph.ph_iot)->read_1((vh->vh_ioh_vga), (0x09)
));
1217}
1218
1219void
1220vga_restore_palette(struct vga_config *vc)
1221{
1222 struct vga_handle *vh = &vc->hdl;
1223 uint i;
1224 uint8_t *palette = vc->vc_palette;
1225
1226 if (vh->vh_mono)
1227 return;
1228
1229 vga_raw_write(vh, VGA_DAC_MASK, 0xff)((vh->vh_ph.ph_iot)->write_1((vh->vh_ioh_vga), (0x06
), (0xff)));
1230 vga_raw_write(vh, VGA_DAC_WRITE, 0x00)((vh->vh_ph.ph_iot)->write_1((vh->vh_ioh_vga), (0x08
), (0x00)));
1231 for (i = 0; i < 3 * 256; i++)
1232 vga_raw_write(vh, VGA_DAC_DATA, *palette++)((vh->vh_ph.ph_iot)->write_1((vh->vh_ioh_vga), (0x09
), (*palette++)));
1233}
1234
1235void
1236vga_restore_fonts(struct vga_config *vc)
1237{
1238 int slot;
1239 struct vgafont *f;
1240
1241 for (slot = 0; slot < VGA_MAXFONT8; slot++) {
1242 f = vc->vc_fonts[slot];
1243 if (f == NULL((void *)0) || f->fontdata == NULL((void *)0))
1244 continue;
1245
1246 vga_loadchars(&vc->hdl, slot, 0, 256, f->height, f->fontdata);
1247 }
1248}
1249
1250#ifdef __alpha__
1251void
1252vga_pick_monitor_type(struct vga_config *vc)
1253{
1254 struct vga_handle *vh = &vc->hdl;
1255
1256 /*
1257 * The Tadpole Alphabook1 uses a 800x600 flat panel in text mode,
1258 * causing the display console to really be 100x37 instead of the
1259 * usual 80x25.
1260 * We attempt to detect this here by checking the CRTC registers.
1261 */
1262 unsigned int hend, oflow, vend;
1263 unsigned int width, height;
1264
1265 hend = vga_6845_read(vh, hdisple)_pcdisplay_6845_read(&(vh)->vh_ph, __builtin_offsetof(
struct reg_mc6845, hdisple));
1266 oflow = vga_6845_read(vh, overfll)_pcdisplay_6845_read(&(vh)->vh_ph, __builtin_offsetof(
struct reg_mc6845, overfll));
1267 vend = vga_6845_read(vh, vde)_pcdisplay_6845_read(&(vh)->vh_ph, __builtin_offsetof(
struct reg_mc6845, vde));
1268 if (oflow & 0x02)
1269 vend |= 0x100;
1270 if (oflow & 0x40)
1271 vend |= 0x200;
1272
1273 width = hend + 1;
1274 height = (vend + 1) / 16;
1275
1276 /* check that the values sound plausible */
1277 if ((width > 80 && width <= 128) && (height > 25 && height <= 50)) {
1278 snprintf(vc->custom_scr.name, sizeof(vc->custom_scr.name),
1279 "%ux%u", width, height);
1280 vc->custom_scr.ncols = width;
1281 vc->custom_scr.nrows = height;
1282 vc->custom_scr.textops = &vga_emulops;
1283 vc->custom_scr.fontwidth = 8;
1284 vc->custom_scr.fontheight = 16;
1285 vc->custom_scr.capabilities =
1286 WSSCREEN_WSCOLORS1 | WSSCREEN_HILIT4 | WSSCREEN_BLINK8;
1287 vc->custom_scrlist[0] = &vc->custom_scr;
1288 vc->custom_list.nscreens = 1;
1289 vc->custom_list.screens =
1290 (const struct wsscreen_descr **)vc->custom_scrlist;
1291 }
1292}
1293#endif
1294
1295struct cfdriver vga_cd = {
1296 NULL((void *)0), "vga", DV_DULL
1297};