xref: /illumos-gate/usr/src/uts/i86pc/io/gfx_private/gfxp_vgatext.c (revision dd51520e127b452179a2ce4ea3bd8dee949f9afe)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1990, 1991 UNIX System Laboratories, Inc.	*/
28 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T	*/
29 /*	  All Rights Reserved  	*/
30 
31 #include <sys/errno.h>
32 #include <sys/types.h>
33 #include <sys/conf.h>
34 #include <sys/kmem.h>
35 #include <sys/visual_io.h>
36 #include <sys/font.h>
37 #include <sys/fbio.h>
38 #include <sys/ddi.h>
39 #include <sys/stat.h>
40 #include <sys/sunddi.h>
41 #include <sys/file.h>
42 #include <sys/open.h>
43 #include <sys/modctl.h>
44 #include <sys/vgareg.h>
45 #include <sys/vgasubr.h>
46 #include <sys/pci.h>
47 #include <sys/kd.h>
48 #include <sys/ddi_impldefs.h>
49 
50 #include "gfx_private.h"
51 
52 #define	MYNAME	"gfxp_vgatext"
53 
54 #define	TEXT_ROWS		25
55 #define	TEXT_COLS		80
56 
57 #define	VGA_BRIGHT_WHITE	0x0f
58 #define	VGA_BLACK		0x00
59 
60 #define	VGA_REG_ADDR		0x3c0
61 #define	VGA_REG_SIZE		0x20
62 
63 #define	VGA_MEM_ADDR		0xa0000
64 #define	VGA_MEM_SIZE		0x20000
65 
66 #define	VGA_MMAP_FB_BASE	VGA_MEM_ADDR
67 
68 struct vgatext_softc {
69 	struct vgaregmap 	regs;
70 	struct vgaregmap 	fb;
71 	off_t			fb_size;
72 	int			fb_regno;
73 	dev_info_t		*devi;
74 	int			mode;	/* KD_TEXT or KD_GRAPHICS */
75 	caddr_t			text_base;	/* hardware text base */
76 	char			shadow[TEXT_ROWS*TEXT_COLS*2];
77 	caddr_t			current_base;	/* hardware or shadow */
78 	struct {
79 		boolean_t visible;
80 		int row;
81 		int col;
82 	}			cursor;
83 	struct vis_polledio	polledio;
84 	struct {
85 		unsigned char red;
86 		unsigned char green;
87 		unsigned char blue;
88 	}			colormap[VGA8_CMAP_ENTRIES];
89 	unsigned char attrib_palette[VGA_ATR_NUM_PLT];
90 	unsigned int flags;
91 	kmutex_t lock;
92 };
93 
94 typedef enum pc_colors {
95 	pc_black	= 0,
96 	pc_blue		= 1,
97 	pc_green	= 2,
98 	pc_cyan		= 3,
99 	pc_red		= 4,
100 	pc_magenta	= 5,
101 	pc_brown	= 6,
102 	pc_white	= 7,
103 	pc_grey		= 8,
104 	pc_brt_blue	= 9,
105 	pc_brt_green	= 10,
106 	pc_brt_cyan	= 11,
107 	pc_brt_red	= 12,
108 	pc_brt_magenta	= 13,
109 	pc_yellow	= 14,
110 	pc_brt_white	= 15
111 } pc_colors_t;
112 
113 static const unsigned char solaris_color_to_pc_color[16] = {
114 	pc_brt_white,		/*  0 - brt_white	*/
115 	pc_black,		/*  1 - black		*/
116 	pc_blue,		/*  2 - blue		*/
117 	pc_green,		/*  3 - green		*/
118 	pc_cyan,		/*  4 - cyan		*/
119 	pc_red,			/*  5 - red		*/
120 	pc_magenta,		/*  6 - magenta		*/
121 	pc_brown,		/*  7 - brown		*/
122 	pc_white,		/*  8 - white		*/
123 	pc_grey,		/*  9 - gery		*/
124 	pc_brt_blue,		/* 10 - brt_blue	*/
125 	pc_brt_green,		/* 11 - brt_green	*/
126 	pc_brt_cyan,		/* 12 - brt_cyan	*/
127 	pc_brt_red,		/* 13 - brt_red		*/
128 	pc_brt_magenta,		/* 14 - brt_magenta	*/
129 	pc_yellow		/* 15 - yellow		*/
130 };
131 
132 static ddi_device_acc_attr_t dev_attr = {
133 	DDI_DEVICE_ATTR_V0,
134 	DDI_NEVERSWAP_ACC,
135 	DDI_STRICTORDER_ACC,
136 };
137 
138 /* default structure for FBIOGATTR ioctl */
139 static struct fbgattr vgatext_attr =  {
140 /*	real_type	owner */
141 	FBTYPE_SUNFAST_COLOR, 0,
142 /* fbtype: type		h  w  depth cms  size */
143 	{ FBTYPE_SUNFAST_COLOR, TEXT_ROWS, TEXT_COLS, 1,    256,  0 },
144 /* fbsattr: flags emu_type	dev_specific */
145 	{ 0, FBTYPE_SUN4COLOR, { 0 } },
146 /*	emu_types */
147 	{ -1 }
148 };
149 
150 #define	GFXP_FLAG_CONSOLE 0x00000001
151 #define	GFXP_IS_CONSOLE(softc) ((softc)->flags & GFXP_FLAG_CONSOLE)
152 
153 /*
154  * Global name used to write the softc pointer in, for the
155  * data wrapper vgatext_return_pointers()
156  */
157 
158 
159 int gfxp_vgatext_detach(dev_info_t *devi, ddi_detach_cmd_t cmd,
160 	gfxp_vgatext_softc_ptr_t ptr);
161 static int vgatext_devinit(struct vgatext_softc *, struct vis_devinit *data);
162 static void	vgatext_cons_copy(struct vgatext_softc *,
163 			struct vis_conscopy *);
164 static void	vgatext_cons_display(struct vgatext_softc *,
165 			struct vis_consdisplay *);
166 static void	vgatext_cons_cursor(struct vgatext_softc *,
167 			struct vis_conscursor *);
168 static void	vgatext_polled_copy(struct vis_polledio_arg *,
169 			struct vis_conscopy *);
170 static void	vgatext_polled_display(struct vis_polledio_arg *,
171 			struct vis_consdisplay *);
172 static void	vgatext_polled_cursor(struct vis_polledio_arg *,
173 			struct vis_conscursor *);
174 static void	vgatext_init(struct vgatext_softc *);
175 static void	vgatext_set_text(struct vgatext_softc *);
176 
177 static void	vgatext_save_text(struct vgatext_softc *softc);
178 static void	vgatext_restore_textmode(struct vgatext_softc *softc);
179 static int	vgatext_suspend(struct vgatext_softc *softc);
180 static void	vgatext_resume(struct vgatext_softc *softc);
181 
182 #if	defined(USE_BORDERS)
183 static void	vgatext_init_graphics(struct vgatext_softc *);
184 #endif
185 
186 static int vgatext_kdsetmode(struct vgatext_softc *softc, int mode);
187 static void vgatext_setfont(struct vgatext_softc *softc);
188 static void vgatext_get_cursor(struct vgatext_softc *softc,
189 		screen_pos_t *row, screen_pos_t *col);
190 static void vgatext_set_cursor(struct vgatext_softc *softc, int row, int col);
191 static void vgatext_hide_cursor(struct vgatext_softc *softc);
192 static void vgatext_save_colormap(struct vgatext_softc *softc);
193 static void vgatext_restore_colormap(struct vgatext_softc *softc);
194 static int vgatext_get_pci_reg_index(dev_info_t *const devi,
195 		unsigned long himask, unsigned long hival, unsigned long addr,
196 		off_t *offset);
197 static int vgatext_get_isa_reg_index(dev_info_t *const devi,
198 		unsigned long hival, unsigned long addr, off_t *offset);
199 
200 static char	vgatext_silent;
201 static char	happyface_boot;
202 
203 gfxp_vgatext_softc_ptr_t
204 gfxp_vgatext_softc_alloc(void)
205 {
206 	return (kmem_zalloc(sizeof (struct vgatext_softc), KM_SLEEP));
207 }
208 
209 void
210 gfxp_vgatext_softc_free(gfxp_vgatext_softc_ptr_t ptr)
211 {
212 	kmem_free(ptr, sizeof (struct vgatext_softc));
213 }
214 
215 /*
216  * NOTE: this function is duplicated here and in consplat/vgatext while
217  *       we work on a set of commitable interfaces to sunpci.c.
218  *
219  * Use the class code to determine if the device is a PCI-to-PCI bridge.
220  * Returns:  B_TRUE  if the device is a bridge.
221  *           B_FALSE if the device is not a bridge or the property cannot be
222  *		     retrieved.
223  */
224 static boolean_t
225 is_pci_bridge(dev_info_t *dip)
226 {
227 	uint32_t class_code;
228 
229 	class_code = (uint32_t)ddi_prop_get_int(DDI_DEV_T_ANY, dip,
230 	    DDI_PROP_DONTPASS, "class-code", 0xffffffff);
231 
232 	if (class_code == 0xffffffff || class_code == DDI_PROP_NOT_FOUND)
233 		return (B_FALSE);
234 
235 	class_code &= 0x00ffff00;
236 	if (class_code == ((PCI_CLASS_BRIDGE << 16) | (PCI_BRIDGE_PCI << 8)))
237 		return (B_TRUE);
238 
239 	return (B_FALSE);
240 }
241 
242 #define	STREQ(a, b)	(strcmp((a), (b)) == 0)
243 
244 static void
245 gfxp_check_for_console(dev_info_t *devi, struct vgatext_softc *softc,
246 	int pci_pcie_bus)
247 {
248 	ddi_acc_handle_t pci_conf;
249 	dev_info_t *pdevi;
250 	uint16_t data16;
251 
252 	/*
253 	 * Based on Section 11.3, "PCI Display Subsystem Initialization",
254 	 * of the 1.1 PCI-to-PCI Bridge Architecture Specification
255 	 * determine if this is the boot console device.  First, see
256 	 * if the SBIOS has turned on PCI I/O for this device.  Then if
257 	 * this is PCI/PCI-E, verify the parent bridge has VGAEnable set.
258 	 */
259 
260 	if (pci_config_setup(devi, &pci_conf) != DDI_SUCCESS) {
261 		cmn_err(CE_WARN,
262 		    MYNAME
263 		    ": can't get PCI conf handle");
264 		return;
265 	}
266 
267 	data16 = pci_config_get16(pci_conf, PCI_CONF_COMM);
268 	if (data16 & PCI_COMM_IO)
269 		softc->flags |= GFXP_FLAG_CONSOLE;
270 
271 	pci_config_teardown(&pci_conf);
272 
273 	/* If IO not enabled or ISA/EISA, just return */
274 	if (!(softc->flags & GFXP_FLAG_CONSOLE) || !pci_pcie_bus)
275 		return;
276 
277 	/*
278 	 * Check for VGA Enable in the Bridge Control register for all
279 	 * PCI/PCIEX parents.  If not set all the way up the chain,
280 	 * this cannot be the boot console.
281 	 */
282 
283 	pdevi = devi;
284 	while (pdevi = ddi_get_parent(pdevi)) {
285 		int	error;
286 		ddi_acc_handle_t ppci_conf;
287 		char	*parent_type = NULL;
288 
289 		error = ddi_prop_lookup_string(DDI_DEV_T_ANY, pdevi,
290 		    DDI_PROP_DONTPASS, "device_type", &parent_type);
291 		if (error != DDI_SUCCESS) {
292 			return;
293 		}
294 
295 		/* Verify still on the PCI/PCIEX parent tree */
296 		if (!STREQ(parent_type, "pci") &&
297 		    !STREQ(parent_type, "pciex")) {
298 			ddi_prop_free(parent_type);
299 			return;
300 		}
301 
302 		ddi_prop_free(parent_type);
303 		parent_type = NULL;
304 
305 		/* VGAEnable is set only for PCI-to-PCI bridges. */
306 		if (is_pci_bridge(pdevi) == B_FALSE)
307 			continue;
308 
309 		if (pci_config_setup(pdevi, &ppci_conf) != DDI_SUCCESS)
310 			continue;
311 
312 		data16 = pci_config_get16(ppci_conf, PCI_BCNF_BCNTRL);
313 		pci_config_teardown(&ppci_conf);
314 
315 		if (!(data16 & PCI_BCNF_BCNTRL_VGA_ENABLE)) {
316 			softc->flags &= ~GFXP_FLAG_CONSOLE;
317 			return;
318 		}
319 	}
320 }
321 
322 int
323 gfxp_vgatext_attach(dev_info_t *devi, ddi_attach_cmd_t cmd,
324 	gfxp_vgatext_softc_ptr_t ptr)
325 {
326 	struct vgatext_softc *softc = (struct vgatext_softc *)ptr;
327 	int	unit = ddi_get_instance(devi);
328 	int	error;
329 	char	*parent_type = NULL;
330 	int	reg_rnumber;
331 	off_t	reg_offset;
332 	off_t	mem_offset;
333 	char	*cons;
334 	int pci_pcie_bus = 0;
335 	int value;
336 
337 	switch (cmd) {
338 	case DDI_ATTACH:
339 		break;
340 
341 	case DDI_RESUME:
342 		vgatext_resume(softc);
343 		return (DDI_SUCCESS);
344 
345 	default:
346 		return (DDI_FAILURE);
347 	}
348 
349 	/* DDI_ATTACH */
350 
351 	softc->devi = devi; /* Copy and init DEVI */
352 
353 	softc->polledio.arg = (struct vis_polledio_arg *)softc;
354 	softc->polledio.display = vgatext_polled_display;
355 	softc->polledio.copy = vgatext_polled_copy;
356 	softc->polledio.cursor = vgatext_polled_cursor;
357 
358 	mutex_init(&(softc->lock), NULL, MUTEX_DRIVER, NULL);
359 
360 	error = ddi_prop_lookup_string(DDI_DEV_T_ANY, ddi_get_parent(devi),
361 	    DDI_PROP_DONTPASS, "device_type", &parent_type);
362 	if (error != DDI_SUCCESS) {
363 		cmn_err(CE_WARN, MYNAME ": can't determine parent type.");
364 		goto fail;
365 	}
366 
367 	/* Not enable AGP and DRM by default */
368 	if (STREQ(parent_type, "isa") || STREQ(parent_type, "eisa")) {
369 		reg_rnumber = vgatext_get_isa_reg_index(devi, 1, VGA_REG_ADDR,
370 		    &reg_offset);
371 		if (reg_rnumber < 0) {
372 			cmn_err(CE_WARN,
373 			    MYNAME
374 			    ": can't find reg entry for registers");
375 			error = DDI_FAILURE;
376 			goto fail;
377 		}
378 		softc->fb_regno = vgatext_get_isa_reg_index(devi, 0,
379 		    VGA_MEM_ADDR, &mem_offset);
380 		if (softc->fb_regno < 0) {
381 			cmn_err(CE_WARN,
382 			    MYNAME
383 			    ": can't find reg entry for memory");
384 			error = DDI_FAILURE;
385 			goto fail;
386 		}
387 	} else if (STREQ(parent_type, "pci") || STREQ(parent_type, "pciex")) {
388 		pci_pcie_bus = 1;
389 		reg_rnumber = vgatext_get_pci_reg_index(devi,
390 		    PCI_REG_ADDR_M|PCI_REG_REL_M,
391 		    PCI_ADDR_IO|PCI_RELOCAT_B, VGA_REG_ADDR,
392 		    &reg_offset);
393 		if (reg_rnumber < 0) {
394 			cmn_err(CE_WARN,
395 			    MYNAME
396 			    ": can't find reg entry for registers");
397 			error = DDI_FAILURE;
398 			goto fail;
399 		}
400 		softc->fb_regno = vgatext_get_pci_reg_index(devi,
401 		    PCI_REG_ADDR_M|PCI_REG_REL_M,
402 		    PCI_ADDR_MEM32|PCI_RELOCAT_B, VGA_MEM_ADDR,
403 		    &mem_offset);
404 		if (softc->fb_regno < 0) {
405 			cmn_err(CE_WARN,
406 			    MYNAME
407 			    ": can't find reg entry for memory");
408 			error = DDI_FAILURE;
409 			goto fail;
410 		}
411 	} else {
412 		cmn_err(CE_WARN, MYNAME ": unknown parent type \"%s\".",
413 		    parent_type);
414 		error = DDI_FAILURE;
415 		goto fail;
416 	}
417 	ddi_prop_free(parent_type);
418 	parent_type = NULL;
419 
420 	error = ddi_regs_map_setup(devi, reg_rnumber,
421 	    (caddr_t *)&softc->regs.addr, reg_offset, VGA_REG_SIZE,
422 	    &dev_attr, &softc->regs.handle);
423 	if (error != DDI_SUCCESS)
424 		goto fail;
425 	softc->regs.mapped = B_TRUE;
426 
427 	softc->fb_size = VGA_MEM_SIZE;
428 
429 	error = ddi_regs_map_setup(devi, softc->fb_regno,
430 	    (caddr_t *)&softc->fb.addr,
431 	    mem_offset, softc->fb_size,
432 	    &dev_attr, &softc->fb.handle);
433 	if (error != DDI_SUCCESS)
434 		goto fail;
435 	softc->fb.mapped = B_TRUE;
436 
437 	if (ddi_get8(softc->regs.handle,
438 	    softc->regs.addr + VGA_MISC_R) & VGA_MISC_IOA_SEL)
439 		softc->text_base = (caddr_t)softc->fb.addr + VGA_COLOR_BASE;
440 	else
441 		softc->text_base = (caddr_t)softc->fb.addr + VGA_MONO_BASE;
442 
443 	if (ddi_prop_lookup_string(DDI_DEV_T_ANY, ddi_root_node(),
444 	    DDI_PROP_DONTPASS, "console", &cons) == DDI_SUCCESS) {
445 		if (strcmp(cons, "graphics") == 0) {
446 			happyface_boot = 1;
447 			vgatext_silent = 1;
448 			softc->current_base = softc->shadow;
449 		} else {
450 			softc->current_base = softc->text_base;
451 		}
452 		ddi_prop_free(cons);
453 	} else {
454 		softc->current_base = softc->text_base;
455 	}
456 
457 	error = ddi_prop_create(makedevice(DDI_MAJOR_T_UNKNOWN, unit),
458 	    devi, DDI_PROP_CANSLEEP, DDI_KERNEL_IOCTL, NULL, 0);
459 	if (error != DDI_SUCCESS)
460 		goto fail;
461 
462 	gfxp_check_for_console(devi, softc, pci_pcie_bus);
463 
464 	value = GFXP_IS_CONSOLE(softc) ? 1 : 0;
465 	if (ddi_prop_update_int(DDI_DEV_T_NONE, devi,
466 	    "primary-controller", value) != DDI_SUCCESS) {
467 		cmn_err(CE_WARN,
468 		    "Can not %s primary-controller "
469 		    "property for driver", value ? "set" : "clear");
470 	}
471 
472 	/* only do this if not in graphics mode */
473 	if ((vgatext_silent == 0) && (GFXP_IS_CONSOLE(softc))) {
474 		vgatext_init(softc);
475 		vgatext_save_colormap(softc);
476 	}
477 
478 	return (DDI_SUCCESS);
479 
480 fail:
481 	if (parent_type != NULL)
482 		ddi_prop_free(parent_type);
483 	(void) gfxp_vgatext_detach(devi, DDI_DETACH, (void *)softc);
484 	return (error);
485 }
486 
487 /*ARGSUSED*/
488 int
489 gfxp_vgatext_detach(dev_info_t *devi, ddi_detach_cmd_t cmd,
490 	gfxp_vgatext_softc_ptr_t ptr)
491 {
492 	struct vgatext_softc *softc = (struct vgatext_softc *)ptr;
493 
494 	(void) ddi_prop_remove(DDI_DEV_T_ANY, devi, "primary-controller");
495 
496 	switch (cmd) {
497 
498 	case DDI_SUSPEND:
499 		return (vgatext_suspend(softc));
500 		/* break; */
501 	case DDI_DETACH:
502 		if (softc->fb.mapped)
503 			ddi_regs_map_free(&softc->fb.handle);
504 		if (softc->regs.mapped)
505 			ddi_regs_map_free(&softc->regs.handle);
506 		mutex_destroy(&(softc->lock));
507 		return (DDI_SUCCESS);
508 
509 	default:
510 		cmn_err(CE_WARN, "gfxp_vgatext_detach: unknown cmd 0x%x\n",
511 		    cmd);
512 		return (DDI_FAILURE);
513 	}
514 }
515 
516 /*ARGSUSED*/
517 int
518 gfxp_vgatext_open(dev_t *devp, int flag, int otyp, cred_t *cred,
519 	gfxp_vgatext_softc_ptr_t ptr)
520 {
521 	struct vgatext_softc *softc = (struct vgatext_softc *)ptr;
522 
523 	if (softc == NULL || otyp == OTYP_BLK)
524 		return (ENXIO);
525 
526 	return (0);
527 }
528 
529 /*ARGSUSED*/
530 int
531 gfxp_vgatext_close(dev_t devp, int flag, int otyp, cred_t *cred,
532 	gfxp_vgatext_softc_ptr_t ptr)
533 {
534 	return (0);
535 }
536 
537 static int
538 do_gfx_ioctl(int cmd, intptr_t data, int mode, struct vgatext_softc *softc)
539 {
540 	static char kernel_only[] =
541 	    "gfxp_vgatext_ioctl: %s is a kernel only ioctl";
542 	int err;
543 	int kd_mode;
544 
545 	switch (cmd) {
546 	case KDSETMODE:
547 		return (vgatext_kdsetmode(softc, (int)data));
548 
549 	case KDGETMODE:
550 		kd_mode = softc->mode;
551 		if (ddi_copyout(&kd_mode, (void *)data, sizeof (int), mode))
552 			return (EFAULT);
553 		break;
554 
555 	case VIS_DEVINIT:
556 
557 		if (!(mode & FKIOCTL)) {
558 			cmn_err(CE_CONT, kernel_only, "VIS_DEVINIT");
559 			return (ENXIO);
560 		}
561 
562 		err = vgatext_devinit(softc, (struct vis_devinit *)data);
563 		if (err != 0) {
564 			cmn_err(CE_WARN,
565 			    "gfxp_vgatext_ioctl:  could not"
566 			    " initialize console");
567 			return (err);
568 		}
569 		break;
570 
571 	case VIS_CONSCOPY:	/* move */
572 	{
573 		struct vis_conscopy pma;
574 
575 		if (ddi_copyin((void *)data, &pma,
576 		    sizeof (struct vis_conscopy), mode))
577 			return (EFAULT);
578 
579 		vgatext_cons_copy(softc, &pma);
580 		break;
581 	}
582 
583 	case VIS_CONSDISPLAY:	/* display */
584 	{
585 		struct vis_consdisplay display_request;
586 
587 		if (ddi_copyin((void *)data, &display_request,
588 		    sizeof (display_request), mode))
589 			return (EFAULT);
590 
591 		vgatext_cons_display(softc, &display_request);
592 		break;
593 	}
594 
595 	case VIS_CONSCURSOR:
596 	{
597 		struct vis_conscursor cursor_request;
598 
599 		if (ddi_copyin((void *)data, &cursor_request,
600 		    sizeof (cursor_request), mode))
601 			return (EFAULT);
602 
603 		vgatext_cons_cursor(softc, &cursor_request);
604 
605 		if (cursor_request.action == VIS_GET_CURSOR &&
606 		    ddi_copyout(&cursor_request, (void *)data,
607 		    sizeof (cursor_request), mode))
608 			return (EFAULT);
609 		break;
610 	}
611 
612 	case VIS_GETCMAP:
613 	case VIS_PUTCMAP:
614 	case FBIOPUTCMAP:
615 	case FBIOGETCMAP:
616 		/*
617 		 * At the moment, text mode is not considered to have
618 		 * a color map.
619 		 */
620 		return (EINVAL);
621 
622 	case FBIOGATTR:
623 		if (copyout(&vgatext_attr, (void *)data,
624 		    sizeof (struct fbgattr)))
625 			return (EFAULT);
626 		break;
627 
628 	case FBIOGTYPE:
629 		if (copyout(&vgatext_attr.fbtype, (void *)data,
630 		    sizeof (struct fbtype)))
631 			return (EFAULT);
632 		break;
633 
634 	default:
635 		return (ENXIO);
636 	}
637 	return (0);
638 }
639 
640 /*ARGSUSED*/
641 int
642 gfxp_vgatext_ioctl(
643     dev_t dev,
644     int cmd,
645     intptr_t data,
646     int mode,
647     cred_t *cred,
648     int *rval,
649     gfxp_vgatext_softc_ptr_t ptr)
650 {
651 	int err;
652 
653 	struct vgatext_softc *softc = (struct vgatext_softc *)ptr;
654 
655 	mutex_enter(&(softc->lock));
656 	err = do_gfx_ioctl(cmd, data, mode, softc);
657 	mutex_exit(&(softc->lock));
658 
659 	return (err);
660 }
661 
662 /*
663  * vgatext_save_text
664  * vgatext_restore_textmode
665  * vgatext_suspend
666  * vgatext_resume
667  *
668  * 	Routines to save and restore contents of the VGA text area
669  * Mostly, this is to support Suspend/Resume operation for graphics
670  * device drivers.  Here in the VGAtext common code, we simply squirrel
671  * away the contents of the hardware's text area during Suspend and then
672  * put it back during Resume
673  */
674 static void
675 vgatext_save_text(struct vgatext_softc *softc)
676 {
677 	unsigned	i;
678 
679 	for (i = 0; i < sizeof (softc->shadow); i++)
680 		softc->shadow[i] = softc->current_base[i];
681 }
682 
683 static void
684 vgatext_restore_textmode(struct vgatext_softc *softc)
685 {
686 	unsigned	i;
687 
688 	vgatext_init(softc);
689 	for (i = 0; i < sizeof (softc->shadow); i++) {
690 		softc->text_base[i] = softc->shadow[i];
691 	}
692 	if (softc->cursor.visible) {
693 		vgatext_set_cursor(softc,
694 		    softc->cursor.row, softc->cursor.col);
695 	}
696 	vgatext_restore_colormap(softc);
697 }
698 
699 static int
700 vgatext_suspend(struct vgatext_softc *softc)
701 {
702 	switch (softc->mode) {
703 	case KD_TEXT:
704 		vgatext_save_text(softc);
705 		break;
706 
707 	case KD_GRAPHICS:
708 		break;
709 
710 	default:
711 		cmn_err(CE_WARN, MYNAME ": unknown mode in vgatext_suspend.");
712 		return (DDI_FAILURE);
713 	}
714 	return (DDI_SUCCESS);
715 }
716 
717 static void
718 vgatext_resume(struct vgatext_softc *softc)
719 {
720 
721 	switch (softc->mode) {
722 	case KD_TEXT:
723 		vgatext_restore_textmode(softc);
724 		break;
725 
726 	case KD_GRAPHICS:
727 
728 		/*
729 		 * Upon RESUME, the graphics device will always actually
730 		 * be in TEXT mode even though the Xorg server did not
731 		 * make that mode change itself (the suspend code did).
732 		 * We want first, therefore, to restore textmode
733 		 * operation fully, and then the Xorg server will
734 		 * do the rest to restore the device to its
735 		 * (hi resolution) graphics mode
736 		 */
737 		vgatext_restore_textmode(softc);
738 #if	defined(USE_BORDERS)
739 		vgatext_init_graphics(softc);
740 #endif
741 		break;
742 	default:
743 		cmn_err(CE_WARN, MYNAME ": unknown mode in vgatext_resume.");
744 		break;
745 	}
746 }
747 
748 static void
749 vgatext_progressbar_stop()
750 {
751 	extern void progressbar_stop(void);
752 
753 	if (vgatext_silent == 1) {
754 		vgatext_silent = 0;
755 		progressbar_stop();
756 	}
757 }
758 
759 static void
760 vgatext_kdsettext(struct vgatext_softc *softc)
761 {
762 	int i;
763 
764 	vgatext_init(softc);
765 	for (i = 0; i < sizeof (softc->shadow); i++) {
766 		softc->text_base[i] = softc->shadow[i];
767 	}
768 	softc->current_base = softc->text_base;
769 	if (softc->cursor.visible) {
770 		vgatext_set_cursor(softc,
771 		    softc->cursor.row, softc->cursor.col);
772 	}
773 	vgatext_restore_colormap(softc);
774 }
775 
776 static void
777 vgatext_kdsetgraphics(struct vgatext_softc *softc)
778 {
779 	vgatext_progressbar_stop();
780 	vgatext_save_text(softc);
781 	softc->current_base = softc->shadow;
782 #if	defined(USE_BORDERS)
783 	vgatext_init_graphics(softc);
784 #endif
785 }
786 
787 static int
788 vgatext_kdsetmode(struct vgatext_softc *softc, int mode)
789 {
790 	if ((mode == softc->mode) || (!GFXP_IS_CONSOLE(softc)))
791 		return (0);
792 
793 	switch (mode) {
794 	case KD_TEXT:
795 		vgatext_kdsettext(softc);
796 		break;
797 
798 	case KD_GRAPHICS:
799 		vgatext_kdsetgraphics(softc);
800 		break;
801 
802 	case KD_RESETTEXT:
803 		/*
804 		 * In order to avoid racing with a starting X server,
805 		 * this needs to be a test and set that is performed in
806 		 * a single (softc->lock protected) ioctl into this driver.
807 		 */
808 		if (softc->mode == KD_TEXT && vgatext_silent == 1) {
809 			vgatext_progressbar_stop();
810 			vgatext_kdsettext(softc);
811 		}
812 		break;
813 
814 	default:
815 		return (EINVAL);
816 	}
817 
818 	softc->mode = mode;
819 	return (0);
820 }
821 
822 /*ARGSUSED*/
823 int
824 gfxp_vgatext_devmap(dev_t dev, devmap_cookie_t dhp, offset_t off, size_t len,
825 		size_t *maplen, uint_t model, void *ptr)
826 {
827 	struct vgatext_softc *softc = (struct vgatext_softc *)ptr;
828 	int err;
829 	size_t length;
830 
831 
832 	if (softc == NULL) {
833 		cmn_err(CE_WARN, "vgatext: Can't find softstate");
834 		return (-1);
835 	}
836 
837 	if (!(off >= VGA_MMAP_FB_BASE &&
838 	    off < VGA_MMAP_FB_BASE + softc->fb_size)) {
839 		cmn_err(CE_WARN, "vgatext: Can't map offset 0x%llx", off);
840 		return (-1);
841 	}
842 
843 	if (off + len > VGA_MMAP_FB_BASE + softc->fb_size)
844 		length = VGA_MMAP_FB_BASE + softc->fb_size - off;
845 	else
846 		length = len;
847 
848 	if ((err = devmap_devmem_setup(dhp, softc->devi,
849 	    NULL, softc->fb_regno, off - VGA_MMAP_FB_BASE,
850 	    length, PROT_ALL, 0, &dev_attr)) < 0) {
851 		return (err);
852 	}
853 
854 
855 	*maplen = length;
856 	return (0);
857 }
858 
859 
860 static int
861 vgatext_devinit(struct vgatext_softc *softc, struct vis_devinit *data)
862 {
863 	/* initialize console instance */
864 	data->version = VIS_CONS_REV;
865 	data->width = TEXT_COLS;
866 	data->height = TEXT_ROWS;
867 	data->linebytes = TEXT_COLS;
868 	data->depth = 4;
869 	data->mode = VIS_TEXT;
870 	data->polledio = &softc->polledio;
871 
872 	return (0);
873 }
874 
875 /*
876  * display a string on the screen at (row, col)
877  *	 assume it has been cropped to fit.
878  */
879 
880 static void
881 vgatext_cons_display(struct vgatext_softc *softc, struct vis_consdisplay *da)
882 {
883 	unsigned char	*string;
884 	int	i;
885 	unsigned char	attr;
886 	struct cgatext {
887 		unsigned char ch;
888 		unsigned char attr;
889 	};
890 	struct cgatext *addr;
891 
892 	/*
893 	 * Sanity checks.  This is a last-ditch effort to avoid damage
894 	 * from brokenness or maliciousness above.
895 	 */
896 	if (da->row < 0 || da->row >= TEXT_ROWS ||
897 	    da->col < 0 || da->col >= TEXT_COLS ||
898 	    da->col + da->width > TEXT_COLS)
899 		return;
900 
901 	/*
902 	 * To be fully general, we should copyin the data.  This is not
903 	 * really relevant for this text-only driver, but a graphical driver
904 	 * should support these ioctls from userland to enable simple
905 	 * system startup graphics.
906 	 */
907 	attr = (solaris_color_to_pc_color[da->bg_color & 0xf] << 4)
908 	    | solaris_color_to_pc_color[da->fg_color & 0xf];
909 	string = da->data;
910 	addr = (struct cgatext *)softc->current_base
911 	    +  (da->row * TEXT_COLS + da->col);
912 	for (i = 0; i < da->width; i++) {
913 		addr->ch = string[i];
914 		addr->attr = attr;
915 		addr++;
916 	}
917 }
918 
919 static void
920 vgatext_polled_display(
921 	struct vis_polledio_arg *arg,
922 	struct vis_consdisplay *da)
923 {
924 	vgatext_cons_display((struct vgatext_softc *)arg, da);
925 }
926 
927 /*
928  * screen-to-screen copy
929  */
930 
931 static void
932 vgatext_cons_copy(struct vgatext_softc *softc, struct vis_conscopy *ma)
933 {
934 	unsigned short	*from;
935 	unsigned short	*to;
936 	int		cnt;
937 	screen_size_t chars_per_row;
938 	unsigned short	*to_row_start;
939 	unsigned short	*from_row_start;
940 	screen_size_t	rows_to_move;
941 	unsigned short	*base;
942 
943 	/*
944 	 * Sanity checks.  Note that this is a last-ditch effort to avoid
945 	 * damage caused by broken-ness or maliciousness above.
946 	 */
947 	if (ma->s_col < 0 || ma->s_col >= TEXT_COLS ||
948 	    ma->s_row < 0 || ma->s_row >= TEXT_ROWS ||
949 	    ma->e_col < 0 || ma->e_col >= TEXT_COLS ||
950 	    ma->e_row < 0 || ma->e_row >= TEXT_ROWS ||
951 	    ma->t_col < 0 || ma->t_col >= TEXT_COLS ||
952 	    ma->t_row < 0 || ma->t_row >= TEXT_ROWS ||
953 	    ma->s_col > ma->e_col ||
954 	    ma->s_row > ma->e_row)
955 		return;
956 
957 	/*
958 	 * Remember we're going to copy shorts because each
959 	 * character/attribute pair is 16 bits.
960 	 */
961 	chars_per_row = ma->e_col - ma->s_col + 1;
962 	rows_to_move = ma->e_row - ma->s_row + 1;
963 
964 	/* More sanity checks. */
965 	if (ma->t_row + rows_to_move > TEXT_ROWS ||
966 	    ma->t_col + chars_per_row > TEXT_COLS)
967 		return;
968 
969 	base = (unsigned short *)softc->current_base;
970 
971 	to_row_start = base + ((ma->t_row * TEXT_COLS) + ma->t_col);
972 	from_row_start = base + ((ma->s_row * TEXT_COLS) + ma->s_col);
973 
974 	if (to_row_start < from_row_start) {
975 		while (rows_to_move-- > 0) {
976 			to = to_row_start;
977 			from = from_row_start;
978 			to_row_start += TEXT_COLS;
979 			from_row_start += TEXT_COLS;
980 			for (cnt = chars_per_row; cnt-- > 0; )
981 				*to++ = *from++;
982 		}
983 	} else {
984 		/*
985 		 * Offset to the end of the region and copy backwards.
986 		 */
987 		cnt = rows_to_move * TEXT_COLS + chars_per_row;
988 		to_row_start += cnt;
989 		from_row_start += cnt;
990 
991 		while (rows_to_move-- > 0) {
992 			to_row_start -= TEXT_COLS;
993 			from_row_start -= TEXT_COLS;
994 			to = to_row_start;
995 			from = from_row_start;
996 			for (cnt = chars_per_row; cnt-- > 0; )
997 				*--to = *--from;
998 		}
999 	}
1000 }
1001 
1002 static void
1003 vgatext_polled_copy(
1004 	struct vis_polledio_arg *arg,
1005 	struct vis_conscopy *ca)
1006 {
1007 	vgatext_cons_copy((struct vgatext_softc *)arg, ca);
1008 }
1009 
1010 
1011 static void
1012 vgatext_cons_cursor(struct vgatext_softc *softc, struct vis_conscursor *ca)
1013 {
1014 	if (vgatext_silent)
1015 		return;
1016 
1017 	switch (ca->action) {
1018 	case VIS_HIDE_CURSOR:
1019 		softc->cursor.visible = B_FALSE;
1020 		if (softc->current_base == softc->text_base)
1021 			vgatext_hide_cursor(softc);
1022 		break;
1023 	case VIS_DISPLAY_CURSOR:
1024 		/*
1025 		 * Sanity check.  This is a last-ditch effort to avoid
1026 		 * damage from brokenness or maliciousness above.
1027 		 */
1028 		if (ca->col < 0 || ca->col >= TEXT_COLS ||
1029 		    ca->row < 0 || ca->row >= TEXT_ROWS)
1030 			return;
1031 
1032 		softc->cursor.visible = B_TRUE;
1033 		softc->cursor.col = ca->col;
1034 		softc->cursor.row = ca->row;
1035 		if (softc->current_base == softc->text_base)
1036 			vgatext_set_cursor(softc, ca->row, ca->col);
1037 		break;
1038 	case VIS_GET_CURSOR:
1039 		if (softc->current_base == softc->text_base) {
1040 			vgatext_get_cursor(softc, &ca->row, &ca->col);
1041 		}
1042 		break;
1043 	}
1044 }
1045 
1046 static void
1047 vgatext_polled_cursor(
1048 	struct vis_polledio_arg *arg,
1049 	struct vis_conscursor *ca)
1050 {
1051 	vgatext_cons_cursor((struct vgatext_softc *)arg, ca);
1052 }
1053 
1054 
1055 
1056 /*ARGSUSED*/
1057 static void
1058 vgatext_hide_cursor(struct vgatext_softc *softc)
1059 {
1060 	/* Nothing at present */
1061 }
1062 
1063 static void
1064 vgatext_set_cursor(struct vgatext_softc *softc, int row, int col)
1065 {
1066 	short	addr;
1067 
1068 	if (vgatext_silent)
1069 		return;
1070 
1071 	addr = row * TEXT_COLS + col;
1072 
1073 	vga_set_crtc(&softc->regs, VGA_CRTC_CLAH, addr >> 8);
1074 	vga_set_crtc(&softc->regs, VGA_CRTC_CLAL, addr & 0xff);
1075 }
1076 
1077 static int vga_row, vga_col;
1078 
1079 static void
1080 vgatext_get_cursor(struct vgatext_softc *softc,
1081     screen_pos_t *row, screen_pos_t *col)
1082 {
1083 	short   addr;
1084 
1085 	addr = (vga_get_crtc(&softc->regs, VGA_CRTC_CLAH) << 8) +
1086 	    vga_get_crtc(&softc->regs, VGA_CRTC_CLAL);
1087 
1088 	vga_row = *row = addr / TEXT_COLS;
1089 	vga_col = *col = addr % TEXT_COLS;
1090 }
1091 
1092 /*
1093  * This code is experimental. It's only enabled if console is
1094  * set to graphics, a preliminary implementation of happyface boot.
1095  */
1096 static void
1097 vgatext_set_text(struct vgatext_softc *softc)
1098 {
1099 	int i;
1100 
1101 	if (happyface_boot == 0)
1102 		return;
1103 
1104 	/* we are in graphics mode, set to text 80X25 mode */
1105 
1106 	/* set misc registers */
1107 	vga_set_reg(&softc->regs, VGA_MISC_W, VGA_MISC_TEXT);
1108 
1109 	/* set sequencer registers */
1110 	vga_set_seq(&softc->regs, VGA_SEQ_RST_SYN,
1111 	    (vga_get_seq(&softc->regs, VGA_SEQ_RST_SYN) &
1112 	    ~VGA_SEQ_RST_SYN_NO_SYNC_RESET));
1113 	for (i = 1; i < NUM_SEQ_REG; i++) {
1114 		vga_set_seq(&softc->regs, i, VGA_SEQ_TEXT[i]);
1115 	}
1116 	vga_set_seq(&softc->regs, VGA_SEQ_RST_SYN,
1117 	    (vga_get_seq(&softc->regs, VGA_SEQ_RST_SYN) |
1118 	    VGA_SEQ_RST_SYN_NO_ASYNC_RESET |
1119 	    VGA_SEQ_RST_SYN_NO_SYNC_RESET));
1120 
1121 	/* set crt controller registers */
1122 	vga_set_crtc(&softc->regs, VGA_CRTC_VRE,
1123 	    (vga_get_crtc(&softc->regs, VGA_CRTC_VRE) &
1124 	    ~VGA_CRTC_VRE_LOCK));
1125 	for (i = 0; i < NUM_CRTC_REG; i++) {
1126 		vga_set_crtc(&softc->regs, i, VGA_CRTC_TEXT[i]);
1127 	}
1128 
1129 	/* set graphics controller registers */
1130 	for (i = 0; i < NUM_GRC_REG; i++) {
1131 		vga_set_grc(&softc->regs, i, VGA_GRC_TEXT[i]);
1132 	}
1133 
1134 	/* set attribute registers */
1135 	for (i = 0; i < NUM_ATR_REG; i++) {
1136 		vga_set_atr(&softc->regs, i, VGA_ATR_TEXT[i]);
1137 	}
1138 
1139 	/* set palette */
1140 	for (i = 0; i < VGA_TEXT_CMAP_ENTRIES; i++) {
1141 		vga_put_cmap(&softc->regs, i, VGA_TEXT_PALETTES[i][0] << 2,
1142 		    VGA_TEXT_PALETTES[i][1] << 2,
1143 		    VGA_TEXT_PALETTES[i][2] << 2);
1144 	}
1145 	for (i = VGA_TEXT_CMAP_ENTRIES; i < VGA8_CMAP_ENTRIES; i++) {
1146 		vga_put_cmap(&softc->regs, i, 0, 0, 0);
1147 	}
1148 
1149 	vgatext_save_colormap(softc);
1150 }
1151 
1152 static void
1153 vgatext_init(struct vgatext_softc *softc)
1154 {
1155 	unsigned char atr_mode;
1156 
1157 	atr_mode = vga_get_atr(&softc->regs, VGA_ATR_MODE);
1158 	if (atr_mode & VGA_ATR_MODE_GRAPH)
1159 		vgatext_set_text(softc);
1160 	atr_mode = vga_get_atr(&softc->regs, VGA_ATR_MODE);
1161 	atr_mode &= ~VGA_ATR_MODE_BLINK;
1162 	atr_mode &= ~VGA_ATR_MODE_9WIDE;
1163 	vga_set_atr(&softc->regs, VGA_ATR_MODE, atr_mode);
1164 #if	defined(USE_BORDERS)
1165 	vga_set_atr(&softc->regs, VGA_ATR_BDR_CLR,
1166 	    vga_get_atr(&softc->regs, VGA_BRIGHT_WHITE));
1167 #else
1168 	vga_set_atr(&softc->regs, VGA_ATR_BDR_CLR,
1169 	    vga_get_atr(&softc->regs, VGA_BLACK));
1170 #endif
1171 	vgatext_setfont(softc);	/* need selectable font? */
1172 }
1173 
1174 #if	defined(USE_BORDERS)
1175 static void
1176 vgatext_init_graphics(struct vgatext_softc *softc)
1177 {
1178 	vga_set_atr(&softc->regs, VGA_ATR_BDR_CLR,
1179 	    vga_get_atr(&softc->regs, VGA_BLACK));
1180 }
1181 #endif
1182 
1183 static void
1184 vgatext_setfont(struct vgatext_softc *softc)
1185 {
1186 	extern unsigned char *ENCODINGS[];
1187 	unsigned char *from;
1188 	unsigned char *to;
1189 	int	i;
1190 	int	j;
1191 	int	bpc;
1192 
1193 /*
1194  * The newboot code to use font plane 2 breaks NVIDIA
1195  * (and some ATI) behavior.  Revert back to the S10
1196  * code.
1197  */
1198 
1199 	/*
1200 	 * I'm embarassed to say that I don't know what these magic
1201 	 * sequences do, other than at the high level of "set the
1202 	 * memory window to allow font setup".  I stole them straight
1203 	 * from "kd"...
1204 	 */
1205 	vga_set_seq(&softc->regs, 0x02, 0x04);
1206 	vga_set_seq(&softc->regs, 0x04, 0x06);
1207 	vga_set_grc(&softc->regs, 0x05, 0x00);
1208 	vga_set_grc(&softc->regs, 0x06, 0x04);
1209 
1210 	/*
1211 	 * This assumes 8x16 characters, which yield the traditional 80x25
1212 	 * screen.  It really should support other character heights.
1213 	 */
1214 	bpc = 16;
1215 	for (i = 0; i < 256; i++) {
1216 		from = ENCODINGS[i];
1217 		to = (unsigned char *)softc->fb.addr + i * 0x20;
1218 		for (j = 0; j < bpc; j++)
1219 			*to++ = *from++;
1220 	}
1221 
1222 	vga_set_seq(&softc->regs, 0x02, 0x03);
1223 	vga_set_seq(&softc->regs, 0x04, 0x02);
1224 	vga_set_grc(&softc->regs, 0x04, 0x00);
1225 	vga_set_grc(&softc->regs, 0x05, 0x10);
1226 	vga_set_grc(&softc->regs, 0x06, 0x0e);
1227 
1228 }
1229 
1230 static void
1231 vgatext_save_colormap(struct vgatext_softc *softc)
1232 {
1233 	int i;
1234 
1235 	for (i = 0; i < VGA_ATR_NUM_PLT; i++) {
1236 		softc->attrib_palette[i] = vga_get_atr(&softc->regs, i);
1237 	}
1238 	for (i = 0; i < VGA8_CMAP_ENTRIES; i++) {
1239 		vga_get_cmap(&softc->regs, i,
1240 		    &softc->colormap[i].red,
1241 		    &softc->colormap[i].green,
1242 		    &softc->colormap[i].blue);
1243 	}
1244 }
1245 
1246 static void
1247 vgatext_restore_colormap(struct vgatext_softc *softc)
1248 {
1249 	int i;
1250 
1251 	for (i = 0; i < VGA_ATR_NUM_PLT; i++) {
1252 		vga_set_atr(&softc->regs, i, softc->attrib_palette[i]);
1253 	}
1254 	for (i = 0; i < VGA8_CMAP_ENTRIES; i++) {
1255 		vga_put_cmap(&softc->regs, i,
1256 		    softc->colormap[i].red,
1257 		    softc->colormap[i].green,
1258 		    softc->colormap[i].blue);
1259 	}
1260 }
1261 
1262 /*
1263  * search the entries of the "reg" property for one which has the desired
1264  * combination of phys_hi bits and contains the desired address.
1265  *
1266  * This version searches a PCI-style "reg" property.  It was prompted by
1267  * issues surrounding the presence or absence of an entry for the ROM:
1268  * (a) a transition problem with PowerPC Virtual Open Firmware
1269  * (b) uncertainty as to whether an entry will be included on a device
1270  *     with ROM support (and so an "active" ROM base address register),
1271  *     but no ROM actually installed.
1272  *
1273  * See the note below on vgatext_get_isa_reg_index for the reasons for
1274  * returning the offset.
1275  *
1276  * Note that this routine may not be fully general; it is intended for the
1277  * specific purpose of finding a couple of particular VGA reg entries and
1278  * may not be suitable for all reg-searching purposes.
1279  */
1280 static int
1281 vgatext_get_pci_reg_index(
1282 	dev_info_t *const devi,
1283 	unsigned long himask,
1284 	unsigned long hival,
1285 	unsigned long addr,
1286 	off_t *offset)
1287 {
1288 
1289 	int			length, index;
1290 	pci_regspec_t	*reg;
1291 
1292 	if (ddi_getlongprop(DDI_DEV_T_ANY, devi, DDI_PROP_DONTPASS,
1293 	    "reg", (caddr_t)&reg, &length) != DDI_PROP_SUCCESS) {
1294 		return (-1);
1295 	}
1296 
1297 	for (index = 0; index < length / sizeof (pci_regspec_t); index++) {
1298 		if ((reg[index].pci_phys_hi & himask) != hival)
1299 			continue;
1300 		if (reg[index].pci_size_hi != 0)
1301 			continue;
1302 		if (reg[index].pci_phys_mid != 0)
1303 			continue;
1304 		if (reg[index].pci_phys_low > addr)
1305 			continue;
1306 		if (reg[index].pci_phys_low + reg[index].pci_size_low <= addr)
1307 			continue;
1308 
1309 		*offset = addr - reg[index].pci_phys_low;
1310 		kmem_free(reg, (size_t)length);
1311 		return (index);
1312 	}
1313 	kmem_free(reg, (size_t)length);
1314 
1315 	return (-1);
1316 }
1317 
1318 /*
1319  * search the entries of the "reg" property for one which has the desired
1320  * combination of phys_hi bits and contains the desired address.
1321  *
1322  * This version searches a ISA-style "reg" property.  It was prompted by
1323  * issues surrounding 8514/A support.  By IEEE 1275 compatibility conventions,
1324  * 8514/A registers should have been added after all standard VGA registers.
1325  * Unfortunately, the Solaris/Intel device configuration framework
1326  * (a) lists the 8514/A registers before the video memory, and then
1327  * (b) also sorts the entries so that I/O entries come before memory
1328  *     entries.
1329  *
1330  * It returns the "reg" index and offset into that register set.
1331  * The offset is needed because there exist (broken?) BIOSes that
1332  * report larger ranges enclosing the standard ranges.  One reports
1333  * 0x3bf for 0x21 instead of 0x3c0 for 0x20, for instance.  Using the
1334  * offset adjusts for this difference in the base of the register set.
1335  *
1336  * Note that this routine may not be fully general; it is intended for the
1337  * specific purpose of finding a couple of particular VGA reg entries and
1338  * may not be suitable for all reg-searching purposes.
1339  */
1340 static int
1341 vgatext_get_isa_reg_index(
1342 	dev_info_t *const devi,
1343 	unsigned long hival,
1344 	unsigned long addr,
1345 	off_t *offset)
1346 {
1347 
1348 	int		length, index;
1349 	struct regspec	*reg;
1350 
1351 	if (ddi_getlongprop(DDI_DEV_T_ANY, devi, DDI_PROP_DONTPASS,
1352 	    "reg", (caddr_t)&reg, &length) != DDI_PROP_SUCCESS) {
1353 		return (-1);
1354 	}
1355 
1356 	for (index = 0; index < length / sizeof (struct regspec); index++) {
1357 		if (reg[index].regspec_bustype != hival)
1358 			continue;
1359 		if (reg[index].regspec_addr > addr)
1360 			continue;
1361 		if (reg[index].regspec_addr + reg[index].regspec_size <= addr)
1362 			continue;
1363 
1364 		*offset = addr - reg[index].regspec_addr;
1365 		kmem_free(reg, (size_t)length);
1366 		return (index);
1367 	}
1368 	kmem_free(reg, (size_t)length);
1369 
1370 	return (-1);
1371 }
1372 
1373 /*
1374  * This vgatext function is used to return the fb, and reg pointers
1375  * and handles for peer graphics drivers.
1376  */
1377 
1378 void
1379 vgatext_return_pointers(struct vgatext_softc *softc,
1380 			struct vgaregmap *fbs,
1381 			struct vgaregmap *regss)
1382 {
1383 
1384 	fbs->addr	= softc->fb.addr;
1385 	fbs->handle	= softc->fb.handle;
1386 	fbs->mapped	= softc->fb.mapped;
1387 	regss->addr	= softc->regs.addr;
1388 	regss->handle	= softc->regs.handle;
1389 	regss->mapped	= softc->regs.mapped;
1390 }
1391