xref: /illumos-gate/usr/src/uts/i86pc/io/gfx_private/gfxp_vgatext.c (revision 2c5ec7a875dcd76853e6618614e990f1e8cdd56d)
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 #include <sys/gfx_private.h>
50 
51 #define	MYNAME	"gfxp_vgatext"
52 
53 #define	TEXT_ROWS		25
54 #define	TEXT_COLS		80
55 
56 #define	VGA_BRIGHT_WHITE	0x0f
57 #define	VGA_BLACK		0x00
58 
59 #define	VGA_REG_ADDR		0x3c0
60 #define	VGA_REG_SIZE		0x20
61 
62 #define	VGA_MEM_ADDR		0xa0000
63 #define	VGA_MEM_SIZE		0x20000
64 
65 #define	VGA_MMAP_FB_BASE	VGA_MEM_ADDR
66 
67 struct vgatext_softc {
68 	struct vgaregmap 	regs;
69 	struct vgaregmap 	fb;
70 	off_t			fb_size;
71 	int			fb_regno;
72 	dev_info_t		*devi;
73 	int			mode;	/* KD_TEXT or KD_GRAPHICS */
74 	caddr_t			text_base;	/* hardware text base */
75 	char			shadow[TEXT_ROWS*TEXT_COLS*2];
76 	caddr_t			current_base;	/* hardware or shadow */
77 	struct {
78 		boolean_t visible;
79 		int row;
80 		int col;
81 	}			cursor;
82 	struct vis_polledio	polledio;
83 	struct {
84 		unsigned char red;
85 		unsigned char green;
86 		unsigned char blue;
87 	}			colormap[VGA8_CMAP_ENTRIES];
88 	unsigned char attrib_palette[VGA_ATR_NUM_PLT];
89 	unsigned int flags;
90 	kmutex_t lock;
91 };
92 
93 typedef enum pc_colors {
94 	pc_black	= 0,
95 	pc_blue		= 1,
96 	pc_green	= 2,
97 	pc_cyan		= 3,
98 	pc_red		= 4,
99 	pc_magenta	= 5,
100 	pc_brown	= 6,
101 	pc_white	= 7,
102 	pc_grey		= 8,
103 	pc_brt_blue	= 9,
104 	pc_brt_green	= 10,
105 	pc_brt_cyan	= 11,
106 	pc_brt_red	= 12,
107 	pc_brt_magenta	= 13,
108 	pc_yellow	= 14,
109 	pc_brt_white	= 15
110 } pc_colors_t;
111 
112 static const unsigned char solaris_color_to_pc_color[16] = {
113 	pc_brt_white,		/*  0 - brt_white	*/
114 	pc_black,		/*  1 - black		*/
115 	pc_blue,		/*  2 - blue		*/
116 	pc_green,		/*  3 - green		*/
117 	pc_cyan,		/*  4 - cyan		*/
118 	pc_red,			/*  5 - red		*/
119 	pc_magenta,		/*  6 - magenta		*/
120 	pc_brown,		/*  7 - brown		*/
121 	pc_white,		/*  8 - white		*/
122 	pc_grey,		/*  9 - gery		*/
123 	pc_brt_blue,		/* 10 - brt_blue	*/
124 	pc_brt_green,		/* 11 - brt_green	*/
125 	pc_brt_cyan,		/* 12 - brt_cyan	*/
126 	pc_brt_red,		/* 13 - brt_red		*/
127 	pc_brt_magenta,		/* 14 - brt_magenta	*/
128 	pc_yellow		/* 15 - yellow		*/
129 };
130 
131 static ddi_device_acc_attr_t dev_attr = {
132 	DDI_DEVICE_ATTR_V0,
133 	DDI_NEVERSWAP_ACC,
134 	DDI_STRICTORDER_ACC,
135 };
136 
137 /* default structure for FBIOGATTR ioctl */
138 static struct fbgattr vgatext_attr =  {
139 /*	real_type	owner */
140 	FBTYPE_SUNFAST_COLOR, 0,
141 /* fbtype: type		h  w  depth cms  size */
142 	{ FBTYPE_SUNFAST_COLOR, TEXT_ROWS, TEXT_COLS, 1,    256,  0 },
143 /* fbsattr: flags emu_type	dev_specific */
144 	{ 0, FBTYPE_SUN4COLOR, { 0 } },
145 /*	emu_types */
146 	{ -1 }
147 };
148 
149 #define	GFXP_FLAG_CONSOLE 0x00000001
150 #define	GFXP_IS_CONSOLE(softc) ((softc)->flags & GFXP_FLAG_CONSOLE)
151 
152 /*
153  * Global name used to write the softc pointer in, for the
154  * data wrapper vgatext_return_pointers()
155  */
156 
157 
158 int gfxp_vgatext_detach(dev_info_t *devi, ddi_detach_cmd_t cmd,
159 	gfxp_vgatext_softc_ptr_t ptr);
160 static int vgatext_devinit(struct vgatext_softc *, struct vis_devinit *data);
161 static void	vgatext_cons_copy(struct vgatext_softc *,
162 			struct vis_conscopy *);
163 static void	vgatext_cons_display(struct vgatext_softc *,
164 			struct vis_consdisplay *);
165 static void	vgatext_cons_cursor(struct vgatext_softc *,
166 			struct vis_conscursor *);
167 static void	vgatext_polled_copy(struct vis_polledio_arg *,
168 			struct vis_conscopy *);
169 static void	vgatext_polled_display(struct vis_polledio_arg *,
170 			struct vis_consdisplay *);
171 static void	vgatext_polled_cursor(struct vis_polledio_arg *,
172 			struct vis_conscursor *);
173 static void	vgatext_init(struct vgatext_softc *);
174 static void	vgatext_set_text(struct vgatext_softc *);
175 
176 static void	vgatext_save_text(struct vgatext_softc *softc);
177 static void	vgatext_restore_textmode(struct vgatext_softc *softc);
178 static int	vgatext_suspend(struct vgatext_softc *softc);
179 static void	vgatext_resume(struct vgatext_softc *softc);
180 
181 #if	defined(USE_BORDERS)
182 static void	vgatext_init_graphics(struct vgatext_softc *);
183 #endif
184 
185 static int vgatext_kdsetmode(struct vgatext_softc *softc, int mode);
186 static void vgatext_setfont(struct vgatext_softc *softc);
187 static void vgatext_get_cursor(struct vgatext_softc *softc,
188 		screen_pos_t *row, screen_pos_t *col);
189 static void vgatext_set_cursor(struct vgatext_softc *softc, int row, int col);
190 static void vgatext_hide_cursor(struct vgatext_softc *softc);
191 static void vgatext_save_colormap(struct vgatext_softc *softc);
192 static void vgatext_restore_colormap(struct vgatext_softc *softc);
193 static int vgatext_get_pci_reg_index(dev_info_t *const devi,
194 		unsigned long himask, unsigned long hival, unsigned long addr,
195 		off_t *offset);
196 static int vgatext_get_isa_reg_index(dev_info_t *const devi,
197 		unsigned long hival, unsigned long addr, off_t *offset);
198 
199 static char	vgatext_silent;
200 static char	happyface_boot;
201 
202 gfxp_vgatext_softc_ptr_t
203 gfxp_vgatext_softc_alloc(void)
204 {
205 	return (kmem_zalloc(sizeof (struct vgatext_softc), KM_SLEEP));
206 }
207 
208 void
209 gfxp_vgatext_softc_free(gfxp_vgatext_softc_ptr_t ptr)
210 {
211 	kmem_free(ptr, sizeof (struct vgatext_softc));
212 }
213 
214 /*
215  * NOTE: this function is duplicated here and in consplat/vgatext while
216  *       we work on a set of commitable interfaces to sunpci.c.
217  *
218  * Use the class code to determine if the device is a PCI-to-PCI bridge.
219  * Returns:  B_TRUE  if the device is a bridge.
220  *           B_FALSE if the device is not a bridge or the property cannot be
221  *		     retrieved.
222  */
223 static boolean_t
224 is_pci_bridge(dev_info_t *dip)
225 {
226 	uint32_t class_code;
227 
228 	class_code = (uint32_t)ddi_prop_get_int(DDI_DEV_T_ANY, dip,
229 	    DDI_PROP_DONTPASS, "class-code", 0xffffffff);
230 
231 	if (class_code == 0xffffffff || class_code == DDI_PROP_NOT_FOUND)
232 		return (B_FALSE);
233 
234 	class_code &= 0x00ffff00;
235 	if (class_code == ((PCI_CLASS_BRIDGE << 16) | (PCI_BRIDGE_PCI << 8)))
236 		return (B_TRUE);
237 
238 	return (B_FALSE);
239 }
240 
241 #define	STREQ(a, b)	(strcmp((a), (b)) == 0)
242 
243 static void
244 gfxp_check_for_console(dev_info_t *devi, struct vgatext_softc *softc,
245     int pci_pcie_bus)
246 {
247 	ddi_acc_handle_t pci_conf;
248 	dev_info_t *pdevi;
249 	uint16_t data16;
250 
251 	/*
252 	 * Based on Section 11.3, "PCI Display Subsystem Initialization",
253 	 * of the 1.1 PCI-to-PCI Bridge Architecture Specification
254 	 * determine if this is the boot console device.  First, see
255 	 * if the SBIOS has turned on PCI I/O for this device.  Then if
256 	 * this is PCI/PCI-E, verify the parent bridge has VGAEnable set.
257 	 */
258 
259 	if (pci_config_setup(devi, &pci_conf) != DDI_SUCCESS) {
260 		cmn_err(CE_WARN,
261 		    MYNAME
262 		    ": can't get PCI conf handle");
263 		return;
264 	}
265 
266 	data16 = pci_config_get16(pci_conf, PCI_CONF_COMM);
267 	if (data16 & PCI_COMM_IO)
268 		softc->flags |= GFXP_FLAG_CONSOLE;
269 
270 	pci_config_teardown(&pci_conf);
271 
272 	/* If IO not enabled or ISA/EISA, just return */
273 	if (!(softc->flags & GFXP_FLAG_CONSOLE) || !pci_pcie_bus)
274 		return;
275 
276 	/*
277 	 * Check for VGA Enable in the Bridge Control register for all
278 	 * PCI/PCIEX parents.  If not set all the way up the chain,
279 	 * this cannot be the boot console.
280 	 */
281 
282 	pdevi = devi;
283 	while (pdevi = ddi_get_parent(pdevi)) {
284 		int	error;
285 		ddi_acc_handle_t ppci_conf;
286 		char	*parent_type = NULL;
287 
288 		error = ddi_prop_lookup_string(DDI_DEV_T_ANY, pdevi,
289 		    DDI_PROP_DONTPASS, "device_type", &parent_type);
290 		if (error != DDI_SUCCESS) {
291 			return;
292 		}
293 
294 		/* Verify still on the PCI/PCIEX parent tree */
295 		if (!STREQ(parent_type, "pci") &&
296 		    !STREQ(parent_type, "pciex")) {
297 			ddi_prop_free(parent_type);
298 			return;
299 		}
300 
301 		ddi_prop_free(parent_type);
302 		parent_type = NULL;
303 
304 		/* VGAEnable is set only for PCI-to-PCI bridges. */
305 		if (is_pci_bridge(pdevi) == B_FALSE)
306 			continue;
307 
308 		if (pci_config_setup(pdevi, &ppci_conf) != DDI_SUCCESS)
309 			continue;
310 
311 		data16 = pci_config_get16(ppci_conf, PCI_BCNF_BCNTRL);
312 		pci_config_teardown(&ppci_conf);
313 
314 		if (!(data16 & PCI_BCNF_BCNTRL_VGA_ENABLE)) {
315 			softc->flags &= ~GFXP_FLAG_CONSOLE;
316 			return;
317 		}
318 	}
319 }
320 
321 int
322 gfxp_vgatext_attach(dev_info_t *devi, ddi_attach_cmd_t cmd,
323     gfxp_vgatext_softc_ptr_t ptr)
324 {
325 	struct vgatext_softc *softc = (struct vgatext_softc *)ptr;
326 	int	unit = ddi_get_instance(devi);
327 	int	error;
328 	char	*parent_type = NULL;
329 	int	reg_rnumber;
330 	off_t	reg_offset;
331 	off_t	mem_offset;
332 	char	*cons;
333 	int pci_pcie_bus = 0;
334 	int value;
335 
336 	switch (cmd) {
337 	case DDI_ATTACH:
338 		break;
339 
340 	case DDI_RESUME:
341 		vgatext_resume(softc);
342 		return (DDI_SUCCESS);
343 
344 	default:
345 		return (DDI_FAILURE);
346 	}
347 
348 	/* DDI_ATTACH */
349 
350 	softc->devi = devi; /* Copy and init DEVI */
351 
352 	softc->polledio.arg = (struct vis_polledio_arg *)softc;
353 	softc->polledio.display = vgatext_polled_display;
354 	softc->polledio.copy = vgatext_polled_copy;
355 	softc->polledio.cursor = vgatext_polled_cursor;
356 
357 	mutex_init(&(softc->lock), NULL, MUTEX_DRIVER, NULL);
358 
359 	error = ddi_prop_lookup_string(DDI_DEV_T_ANY, ddi_get_parent(devi),
360 	    DDI_PROP_DONTPASS, "device_type", &parent_type);
361 	if (error != DDI_SUCCESS) {
362 		cmn_err(CE_WARN, MYNAME ": can't determine parent type.");
363 		goto fail;
364 	}
365 
366 	/* Not enable AGP and DRM by default */
367 	if (STREQ(parent_type, "isa") || STREQ(parent_type, "eisa")) {
368 		reg_rnumber = vgatext_get_isa_reg_index(devi, 1, VGA_REG_ADDR,
369 		    &reg_offset);
370 		if (reg_rnumber < 0) {
371 			cmn_err(CE_WARN,
372 			    MYNAME
373 			    ": can't find reg entry for registers");
374 			error = DDI_FAILURE;
375 			goto fail;
376 		}
377 		softc->fb_regno = vgatext_get_isa_reg_index(devi, 0,
378 		    VGA_MEM_ADDR, &mem_offset);
379 		if (softc->fb_regno < 0) {
380 			cmn_err(CE_WARN,
381 			    MYNAME
382 			    ": can't find reg entry for memory");
383 			error = DDI_FAILURE;
384 			goto fail;
385 		}
386 	} else if (STREQ(parent_type, "pci") || STREQ(parent_type, "pciex")) {
387 		pci_pcie_bus = 1;
388 		reg_rnumber = vgatext_get_pci_reg_index(devi,
389 		    PCI_REG_ADDR_M|PCI_REG_REL_M,
390 		    PCI_ADDR_IO|PCI_RELOCAT_B, VGA_REG_ADDR,
391 		    &reg_offset);
392 		if (reg_rnumber < 0) {
393 			cmn_err(CE_WARN,
394 			    MYNAME
395 			    ": can't find reg entry for registers");
396 			error = DDI_FAILURE;
397 			goto fail;
398 		}
399 		softc->fb_regno = vgatext_get_pci_reg_index(devi,
400 		    PCI_REG_ADDR_M|PCI_REG_REL_M,
401 		    PCI_ADDR_MEM32|PCI_RELOCAT_B, VGA_MEM_ADDR,
402 		    &mem_offset);
403 		if (softc->fb_regno < 0) {
404 			cmn_err(CE_WARN,
405 			    MYNAME
406 			    ": can't find reg entry for memory");
407 			error = DDI_FAILURE;
408 			goto fail;
409 		}
410 	} else {
411 		cmn_err(CE_WARN, MYNAME ": unknown parent type \"%s\".",
412 		    parent_type);
413 		error = DDI_FAILURE;
414 		goto fail;
415 	}
416 	ddi_prop_free(parent_type);
417 	parent_type = NULL;
418 
419 	error = ddi_regs_map_setup(devi, reg_rnumber,
420 	    (caddr_t *)&softc->regs.addr, reg_offset, VGA_REG_SIZE,
421 	    &dev_attr, &softc->regs.handle);
422 	if (error != DDI_SUCCESS)
423 		goto fail;
424 	softc->regs.mapped = B_TRUE;
425 
426 	softc->fb_size = VGA_MEM_SIZE;
427 
428 	error = ddi_regs_map_setup(devi, softc->fb_regno,
429 	    (caddr_t *)&softc->fb.addr,
430 	    mem_offset, softc->fb_size,
431 	    &dev_attr, &softc->fb.handle);
432 	if (error != DDI_SUCCESS)
433 		goto fail;
434 	softc->fb.mapped = B_TRUE;
435 
436 	if (ddi_get8(softc->regs.handle,
437 	    softc->regs.addr + VGA_MISC_R) & VGA_MISC_IOA_SEL)
438 		softc->text_base = (caddr_t)softc->fb.addr + VGA_COLOR_BASE;
439 	else
440 		softc->text_base = (caddr_t)softc->fb.addr + VGA_MONO_BASE;
441 
442 	if (ddi_prop_lookup_string(DDI_DEV_T_ANY, ddi_root_node(),
443 	    DDI_PROP_DONTPASS, "console", &cons) == DDI_SUCCESS) {
444 		if (strcmp(cons, "graphics") == 0) {
445 			happyface_boot = 1;
446 			vgatext_silent = 1;
447 			softc->current_base = softc->shadow;
448 		} else {
449 			softc->current_base = softc->text_base;
450 		}
451 		ddi_prop_free(cons);
452 	} else {
453 		softc->current_base = softc->text_base;
454 	}
455 
456 	error = ddi_prop_create(makedevice(DDI_MAJOR_T_UNKNOWN, unit),
457 	    devi, DDI_PROP_CANSLEEP, DDI_KERNEL_IOCTL, NULL, 0);
458 	if (error != DDI_SUCCESS)
459 		goto fail;
460 
461 	gfxp_check_for_console(devi, softc, pci_pcie_bus);
462 
463 	value = GFXP_IS_CONSOLE(softc) ? 1 : 0;
464 	if (ddi_prop_update_int(DDI_DEV_T_NONE, devi,
465 	    "primary-controller", value) != DDI_SUCCESS) {
466 		cmn_err(CE_WARN,
467 		    "Can not %s primary-controller "
468 		    "property for driver", value ? "set" : "clear");
469 	}
470 
471 	/* only do this if not in graphics mode */
472 	if ((vgatext_silent == 0) && (GFXP_IS_CONSOLE(softc))) {
473 		vgatext_init(softc);
474 		vgatext_save_colormap(softc);
475 	}
476 
477 	return (DDI_SUCCESS);
478 
479 fail:
480 	if (parent_type != NULL)
481 		ddi_prop_free(parent_type);
482 	(void) gfxp_vgatext_detach(devi, DDI_DETACH, (void *)softc);
483 	return (error);
484 }
485 
486 /*ARGSUSED*/
487 int
488 gfxp_vgatext_detach(dev_info_t *devi, ddi_detach_cmd_t cmd,
489     gfxp_vgatext_softc_ptr_t ptr)
490 {
491 	struct vgatext_softc *softc = (struct vgatext_softc *)ptr;
492 
493 	(void) ddi_prop_remove(DDI_DEV_T_ANY, devi, "primary-controller");
494 
495 	switch (cmd) {
496 
497 	case DDI_SUSPEND:
498 		return (vgatext_suspend(softc));
499 		/* break; */
500 	case DDI_DETACH:
501 		if (softc->fb.mapped)
502 			ddi_regs_map_free(&softc->fb.handle);
503 		if (softc->regs.mapped)
504 			ddi_regs_map_free(&softc->regs.handle);
505 		mutex_destroy(&(softc->lock));
506 		return (DDI_SUCCESS);
507 
508 	default:
509 		cmn_err(CE_WARN, "gfxp_vgatext_detach: unknown cmd 0x%x\n",
510 		    cmd);
511 		return (DDI_FAILURE);
512 	}
513 }
514 
515 /*ARGSUSED*/
516 int
517 gfxp_vgatext_open(dev_t *devp, int flag, int otyp, cred_t *cred,
518     gfxp_vgatext_softc_ptr_t ptr)
519 {
520 	struct vgatext_softc *softc = (struct vgatext_softc *)ptr;
521 
522 	if (softc == NULL || otyp == OTYP_BLK)
523 		return (ENXIO);
524 
525 	return (0);
526 }
527 
528 /*ARGSUSED*/
529 int
530 gfxp_vgatext_close(dev_t devp, int flag, int otyp, cred_t *cred,
531     gfxp_vgatext_softc_ptr_t ptr)
532 {
533 	return (0);
534 }
535 
536 static int
537 do_gfx_ioctl(int cmd, intptr_t data, int mode, struct vgatext_softc *softc)
538 {
539 	static char kernel_only[] =
540 	    "gfxp_vgatext_ioctl: %s is a kernel only ioctl";
541 	int err;
542 	int kd_mode;
543 
544 	switch (cmd) {
545 	case KDSETMODE:
546 		return (vgatext_kdsetmode(softc, (int)data));
547 
548 	case KDGETMODE:
549 		kd_mode = softc->mode;
550 		if (ddi_copyout(&kd_mode, (void *)data, sizeof (int), mode))
551 			return (EFAULT);
552 		break;
553 
554 	case VIS_DEVINIT:
555 
556 		if (!(mode & FKIOCTL)) {
557 			cmn_err(CE_CONT, kernel_only, "VIS_DEVINIT");
558 			return (ENXIO);
559 		}
560 
561 		err = vgatext_devinit(softc, (struct vis_devinit *)data);
562 		if (err != 0) {
563 			cmn_err(CE_WARN,
564 			    "gfxp_vgatext_ioctl:  could not"
565 			    " initialize console");
566 			return (err);
567 		}
568 		break;
569 
570 	case VIS_CONSCOPY:	/* move */
571 	{
572 		struct vis_conscopy pma;
573 
574 		if (ddi_copyin((void *)data, &pma,
575 		    sizeof (struct vis_conscopy), mode))
576 			return (EFAULT);
577 
578 		vgatext_cons_copy(softc, &pma);
579 		break;
580 	}
581 
582 	case VIS_CONSDISPLAY:	/* display */
583 	{
584 		struct vis_consdisplay display_request;
585 
586 		if (ddi_copyin((void *)data, &display_request,
587 		    sizeof (display_request), mode))
588 			return (EFAULT);
589 
590 		vgatext_cons_display(softc, &display_request);
591 		break;
592 	}
593 
594 	case VIS_CONSCURSOR:
595 	{
596 		struct vis_conscursor cursor_request;
597 
598 		if (ddi_copyin((void *)data, &cursor_request,
599 		    sizeof (cursor_request), mode))
600 			return (EFAULT);
601 
602 		vgatext_cons_cursor(softc, &cursor_request);
603 
604 		if (cursor_request.action == VIS_GET_CURSOR &&
605 		    ddi_copyout(&cursor_request, (void *)data,
606 		    sizeof (cursor_request), mode))
607 			return (EFAULT);
608 		break;
609 	}
610 
611 	case VIS_GETCMAP:
612 	case VIS_PUTCMAP:
613 	case FBIOPUTCMAP:
614 	case FBIOGETCMAP:
615 		/*
616 		 * At the moment, text mode is not considered to have
617 		 * a color map.
618 		 */
619 		return (EINVAL);
620 
621 	case FBIOGATTR:
622 		if (copyout(&vgatext_attr, (void *)data,
623 		    sizeof (struct fbgattr)))
624 			return (EFAULT);
625 		break;
626 
627 	case FBIOGTYPE:
628 		if (copyout(&vgatext_attr.fbtype, (void *)data,
629 		    sizeof (struct fbtype)))
630 			return (EFAULT);
631 		break;
632 
633 	default:
634 		return (ENXIO);
635 	}
636 	return (0);
637 }
638 
639 /*ARGSUSED*/
640 int
641 gfxp_vgatext_ioctl(
642     dev_t dev,
643     int cmd,
644     intptr_t data,
645     int mode,
646     cred_t *cred,
647     int *rval,
648     gfxp_vgatext_softc_ptr_t ptr)
649 {
650 	int err;
651 
652 	struct vgatext_softc *softc = (struct vgatext_softc *)ptr;
653 
654 	mutex_enter(&(softc->lock));
655 	err = do_gfx_ioctl(cmd, data, mode, softc);
656 	mutex_exit(&(softc->lock));
657 
658 	return (err);
659 }
660 
661 /*
662  * vgatext_save_text
663  * vgatext_restore_textmode
664  * vgatext_suspend
665  * vgatext_resume
666  *
667  * 	Routines to save and restore contents of the VGA text area
668  * Mostly, this is to support Suspend/Resume operation for graphics
669  * device drivers.  Here in the VGAtext common code, we simply squirrel
670  * away the contents of the hardware's text area during Suspend and then
671  * put it back during Resume
672  */
673 static void
674 vgatext_save_text(struct vgatext_softc *softc)
675 {
676 	unsigned	i;
677 
678 	for (i = 0; i < sizeof (softc->shadow); i++)
679 		softc->shadow[i] = softc->current_base[i];
680 }
681 
682 static void
683 vgatext_restore_textmode(struct vgatext_softc *softc)
684 {
685 	unsigned	i;
686 
687 	vgatext_init(softc);
688 	for (i = 0; i < sizeof (softc->shadow); i++) {
689 		softc->text_base[i] = softc->shadow[i];
690 	}
691 	if (softc->cursor.visible) {
692 		vgatext_set_cursor(softc,
693 		    softc->cursor.row, softc->cursor.col);
694 	}
695 	vgatext_restore_colormap(softc);
696 }
697 
698 static int
699 vgatext_suspend(struct vgatext_softc *softc)
700 {
701 	switch (softc->mode) {
702 	case KD_TEXT:
703 		vgatext_save_text(softc);
704 		break;
705 
706 	case KD_GRAPHICS:
707 		break;
708 
709 	default:
710 		cmn_err(CE_WARN, MYNAME ": unknown mode in vgatext_suspend.");
711 		return (DDI_FAILURE);
712 	}
713 	return (DDI_SUCCESS);
714 }
715 
716 static void
717 vgatext_resume(struct vgatext_softc *softc)
718 {
719 
720 	switch (softc->mode) {
721 	case KD_TEXT:
722 		vgatext_restore_textmode(softc);
723 		break;
724 
725 	case KD_GRAPHICS:
726 
727 		/*
728 		 * Upon RESUME, the graphics device will always actually
729 		 * be in TEXT mode even though the Xorg server did not
730 		 * make that mode change itself (the suspend code did).
731 		 * We want first, therefore, to restore textmode
732 		 * operation fully, and then the Xorg server will
733 		 * do the rest to restore the device to its
734 		 * (hi resolution) graphics mode
735 		 */
736 		vgatext_restore_textmode(softc);
737 #if	defined(USE_BORDERS)
738 		vgatext_init_graphics(softc);
739 #endif
740 		break;
741 	default:
742 		cmn_err(CE_WARN, MYNAME ": unknown mode in vgatext_resume.");
743 		break;
744 	}
745 }
746 
747 static void
748 vgatext_progressbar_stop()
749 {
750 	extern void progressbar_stop(void);
751 
752 	if (vgatext_silent == 1) {
753 		vgatext_silent = 0;
754 		progressbar_stop();
755 	}
756 }
757 
758 static void
759 vgatext_kdsettext(struct vgatext_softc *softc)
760 {
761 	int i;
762 
763 	vgatext_init(softc);
764 	for (i = 0; i < sizeof (softc->shadow); i++) {
765 		softc->text_base[i] = softc->shadow[i];
766 	}
767 	softc->current_base = softc->text_base;
768 	if (softc->cursor.visible) {
769 		vgatext_set_cursor(softc,
770 		    softc->cursor.row, softc->cursor.col);
771 	}
772 	vgatext_restore_colormap(softc);
773 }
774 
775 static void
776 vgatext_kdsetgraphics(struct vgatext_softc *softc)
777 {
778 	vgatext_progressbar_stop();
779 	vgatext_save_text(softc);
780 	softc->current_base = softc->shadow;
781 #if	defined(USE_BORDERS)
782 	vgatext_init_graphics(softc);
783 #endif
784 }
785 
786 static int
787 vgatext_kdsetmode(struct vgatext_softc *softc, int mode)
788 {
789 	if ((mode == softc->mode) || (!GFXP_IS_CONSOLE(softc)))
790 		return (0);
791 
792 	switch (mode) {
793 	case KD_TEXT:
794 		vgatext_kdsettext(softc);
795 		break;
796 
797 	case KD_GRAPHICS:
798 		vgatext_kdsetgraphics(softc);
799 		break;
800 
801 	case KD_RESETTEXT:
802 		/*
803 		 * In order to avoid racing with a starting X server,
804 		 * this needs to be a test and set that is performed in
805 		 * a single (softc->lock protected) ioctl into this driver.
806 		 */
807 		if (softc->mode == KD_TEXT && vgatext_silent == 1) {
808 			vgatext_progressbar_stop();
809 			vgatext_kdsettext(softc);
810 		}
811 		break;
812 
813 	default:
814 		return (EINVAL);
815 	}
816 
817 	softc->mode = mode;
818 	return (0);
819 }
820 
821 /*ARGSUSED*/
822 int
823 gfxp_vgatext_devmap(dev_t dev, devmap_cookie_t dhp, offset_t off, size_t len,
824     size_t *maplen, uint_t model, void *ptr)
825 {
826 	struct vgatext_softc *softc = (struct vgatext_softc *)ptr;
827 	int err;
828 	size_t length;
829 
830 
831 	if (softc == NULL) {
832 		cmn_err(CE_WARN, "vgatext: Can't find softstate");
833 		return (-1);
834 	}
835 
836 	if (!(off >= VGA_MMAP_FB_BASE &&
837 	    off < VGA_MMAP_FB_BASE + softc->fb_size)) {
838 		cmn_err(CE_WARN, "vgatext: Can't map offset 0x%llx", off);
839 		return (-1);
840 	}
841 
842 	if (off + len > VGA_MMAP_FB_BASE + softc->fb_size)
843 		length = VGA_MMAP_FB_BASE + softc->fb_size - off;
844 	else
845 		length = len;
846 
847 	if ((err = devmap_devmem_setup(dhp, softc->devi,
848 	    NULL, softc->fb_regno, off - VGA_MMAP_FB_BASE,
849 	    length, PROT_ALL, 0, &dev_attr)) < 0) {
850 		return (err);
851 	}
852 
853 
854 	*maplen = length;
855 	return (0);
856 }
857 
858 
859 static int
860 vgatext_devinit(struct vgatext_softc *softc, struct vis_devinit *data)
861 {
862 	/* initialize console instance */
863 	data->version = VIS_CONS_REV;
864 	data->width = TEXT_COLS;
865 	data->height = TEXT_ROWS;
866 	data->linebytes = TEXT_COLS;
867 	data->depth = 4;
868 	data->mode = VIS_TEXT;
869 	data->polledio = &softc->polledio;
870 
871 	return (0);
872 }
873 
874 /*
875  * display a string on the screen at (row, col)
876  *	 assume it has been cropped to fit.
877  */
878 
879 static void
880 vgatext_cons_display(struct vgatext_softc *softc, struct vis_consdisplay *da)
881 {
882 	unsigned char	*string;
883 	int	i;
884 	unsigned char	attr;
885 	struct cgatext {
886 		unsigned char ch;
887 		unsigned char attr;
888 	};
889 	struct cgatext *addr;
890 
891 	/*
892 	 * Sanity checks.  This is a last-ditch effort to avoid damage
893 	 * from brokenness or maliciousness above.
894 	 */
895 	if (da->row < 0 || da->row >= TEXT_ROWS ||
896 	    da->col < 0 || da->col >= TEXT_COLS ||
897 	    da->col + da->width > TEXT_COLS)
898 		return;
899 
900 	/*
901 	 * To be fully general, we should copyin the data.  This is not
902 	 * really relevant for this text-only driver, but a graphical driver
903 	 * should support these ioctls from userland to enable simple
904 	 * system startup graphics.
905 	 */
906 	attr = (solaris_color_to_pc_color[da->bg_color & 0xf] << 4)
907 	    | solaris_color_to_pc_color[da->fg_color & 0xf];
908 	string = da->data;
909 	addr = (struct cgatext *)softc->current_base
910 	    +  (da->row * TEXT_COLS + da->col);
911 	for (i = 0; i < da->width; i++) {
912 		addr->ch = string[i];
913 		addr->attr = attr;
914 		addr++;
915 	}
916 }
917 
918 static void
919 vgatext_polled_display(
920 	struct vis_polledio_arg *arg,
921 	struct vis_consdisplay *da)
922 {
923 	vgatext_cons_display((struct vgatext_softc *)arg, da);
924 }
925 
926 /*
927  * screen-to-screen copy
928  */
929 
930 static void
931 vgatext_cons_copy(struct vgatext_softc *softc, struct vis_conscopy *ma)
932 {
933 	unsigned short	*from;
934 	unsigned short	*to;
935 	int		cnt;
936 	screen_size_t chars_per_row;
937 	unsigned short	*to_row_start;
938 	unsigned short	*from_row_start;
939 	screen_size_t	rows_to_move;
940 	unsigned short	*base;
941 
942 	/*
943 	 * Sanity checks.  Note that this is a last-ditch effort to avoid
944 	 * damage caused by broken-ness or maliciousness above.
945 	 */
946 	if (ma->s_col < 0 || ma->s_col >= TEXT_COLS ||
947 	    ma->s_row < 0 || ma->s_row >= TEXT_ROWS ||
948 	    ma->e_col < 0 || ma->e_col >= TEXT_COLS ||
949 	    ma->e_row < 0 || ma->e_row >= TEXT_ROWS ||
950 	    ma->t_col < 0 || ma->t_col >= TEXT_COLS ||
951 	    ma->t_row < 0 || ma->t_row >= TEXT_ROWS ||
952 	    ma->s_col > ma->e_col ||
953 	    ma->s_row > ma->e_row)
954 		return;
955 
956 	/*
957 	 * Remember we're going to copy shorts because each
958 	 * character/attribute pair is 16 bits.
959 	 */
960 	chars_per_row = ma->e_col - ma->s_col + 1;
961 	rows_to_move = ma->e_row - ma->s_row + 1;
962 
963 	/* More sanity checks. */
964 	if (ma->t_row + rows_to_move > TEXT_ROWS ||
965 	    ma->t_col + chars_per_row > TEXT_COLS)
966 		return;
967 
968 	base = (unsigned short *)softc->current_base;
969 
970 	to_row_start = base + ((ma->t_row * TEXT_COLS) + ma->t_col);
971 	from_row_start = base + ((ma->s_row * TEXT_COLS) + ma->s_col);
972 
973 	if (to_row_start < from_row_start) {
974 		while (rows_to_move-- > 0) {
975 			to = to_row_start;
976 			from = from_row_start;
977 			to_row_start += TEXT_COLS;
978 			from_row_start += TEXT_COLS;
979 			for (cnt = chars_per_row; cnt-- > 0; )
980 				*to++ = *from++;
981 		}
982 	} else {
983 		/*
984 		 * Offset to the end of the region and copy backwards.
985 		 */
986 		cnt = rows_to_move * TEXT_COLS + chars_per_row;
987 		to_row_start += cnt;
988 		from_row_start += cnt;
989 
990 		while (rows_to_move-- > 0) {
991 			to_row_start -= TEXT_COLS;
992 			from_row_start -= TEXT_COLS;
993 			to = to_row_start;
994 			from = from_row_start;
995 			for (cnt = chars_per_row; cnt-- > 0; )
996 				*--to = *--from;
997 		}
998 	}
999 }
1000 
1001 static void
1002 vgatext_polled_copy(
1003 	struct vis_polledio_arg *arg,
1004 	struct vis_conscopy *ca)
1005 {
1006 	vgatext_cons_copy((struct vgatext_softc *)arg, ca);
1007 }
1008 
1009 
1010 static void
1011 vgatext_cons_cursor(struct vgatext_softc *softc, struct vis_conscursor *ca)
1012 {
1013 	if (vgatext_silent)
1014 		return;
1015 
1016 	switch (ca->action) {
1017 	case VIS_HIDE_CURSOR:
1018 		softc->cursor.visible = B_FALSE;
1019 		if (softc->current_base == softc->text_base)
1020 			vgatext_hide_cursor(softc);
1021 		break;
1022 	case VIS_DISPLAY_CURSOR:
1023 		/*
1024 		 * Sanity check.  This is a last-ditch effort to avoid
1025 		 * damage from brokenness or maliciousness above.
1026 		 */
1027 		if (ca->col < 0 || ca->col >= TEXT_COLS ||
1028 		    ca->row < 0 || ca->row >= TEXT_ROWS)
1029 			return;
1030 
1031 		softc->cursor.visible = B_TRUE;
1032 		softc->cursor.col = ca->col;
1033 		softc->cursor.row = ca->row;
1034 		if (softc->current_base == softc->text_base)
1035 			vgatext_set_cursor(softc, ca->row, ca->col);
1036 		break;
1037 	case VIS_GET_CURSOR:
1038 		if (softc->current_base == softc->text_base) {
1039 			vgatext_get_cursor(softc, &ca->row, &ca->col);
1040 		}
1041 		break;
1042 	}
1043 }
1044 
1045 static void
1046 vgatext_polled_cursor(
1047 	struct vis_polledio_arg *arg,
1048 	struct vis_conscursor *ca)
1049 {
1050 	vgatext_cons_cursor((struct vgatext_softc *)arg, ca);
1051 }
1052 
1053 
1054 
1055 /*ARGSUSED*/
1056 static void
1057 vgatext_hide_cursor(struct vgatext_softc *softc)
1058 {
1059 	/* Nothing at present */
1060 }
1061 
1062 static void
1063 vgatext_set_cursor(struct vgatext_softc *softc, int row, int col)
1064 {
1065 	short	addr;
1066 
1067 	if (vgatext_silent)
1068 		return;
1069 
1070 	addr = row * TEXT_COLS + col;
1071 
1072 	vga_set_crtc(&softc->regs, VGA_CRTC_CLAH, addr >> 8);
1073 	vga_set_crtc(&softc->regs, VGA_CRTC_CLAL, addr & 0xff);
1074 }
1075 
1076 static int vga_row, vga_col;
1077 
1078 static void
1079 vgatext_get_cursor(struct vgatext_softc *softc,
1080     screen_pos_t *row, screen_pos_t *col)
1081 {
1082 	short   addr;
1083 
1084 	addr = (vga_get_crtc(&softc->regs, VGA_CRTC_CLAH) << 8) +
1085 	    vga_get_crtc(&softc->regs, VGA_CRTC_CLAL);
1086 
1087 	vga_row = *row = addr / TEXT_COLS;
1088 	vga_col = *col = addr % TEXT_COLS;
1089 }
1090 
1091 /*
1092  * This code is experimental. It's only enabled if console is
1093  * set to graphics, a preliminary implementation of happyface boot.
1094  */
1095 static void
1096 vgatext_set_text(struct vgatext_softc *softc)
1097 {
1098 	int i;
1099 
1100 	if (happyface_boot == 0)
1101 		return;
1102 
1103 	/* we are in graphics mode, set to text 80X25 mode */
1104 
1105 	/* set misc registers */
1106 	vga_set_reg(&softc->regs, VGA_MISC_W, VGA_MISC_TEXT);
1107 
1108 	/* set sequencer registers */
1109 	vga_set_seq(&softc->regs, VGA_SEQ_RST_SYN,
1110 	    (vga_get_seq(&softc->regs, VGA_SEQ_RST_SYN) &
1111 	    ~VGA_SEQ_RST_SYN_NO_SYNC_RESET));
1112 	for (i = 1; i < NUM_SEQ_REG; i++) {
1113 		vga_set_seq(&softc->regs, i, VGA_SEQ_TEXT[i]);
1114 	}
1115 	vga_set_seq(&softc->regs, VGA_SEQ_RST_SYN,
1116 	    (vga_get_seq(&softc->regs, VGA_SEQ_RST_SYN) |
1117 	    VGA_SEQ_RST_SYN_NO_ASYNC_RESET |
1118 	    VGA_SEQ_RST_SYN_NO_SYNC_RESET));
1119 
1120 	/* set crt controller registers */
1121 	vga_set_crtc(&softc->regs, VGA_CRTC_VRE,
1122 	    (vga_get_crtc(&softc->regs, VGA_CRTC_VRE) &
1123 	    ~VGA_CRTC_VRE_LOCK));
1124 	for (i = 0; i < NUM_CRTC_REG; i++) {
1125 		vga_set_crtc(&softc->regs, i, VGA_CRTC_TEXT[i]);
1126 	}
1127 
1128 	/* set graphics controller registers */
1129 	for (i = 0; i < NUM_GRC_REG; i++) {
1130 		vga_set_grc(&softc->regs, i, VGA_GRC_TEXT[i]);
1131 	}
1132 
1133 	/* set attribute registers */
1134 	for (i = 0; i < NUM_ATR_REG; i++) {
1135 		vga_set_atr(&softc->regs, i, VGA_ATR_TEXT[i]);
1136 	}
1137 
1138 	/* set palette */
1139 	for (i = 0; i < VGA_TEXT_CMAP_ENTRIES; i++) {
1140 		vga_put_cmap(&softc->regs, i, VGA_TEXT_PALETTES[i][0] << 2,
1141 		    VGA_TEXT_PALETTES[i][1] << 2,
1142 		    VGA_TEXT_PALETTES[i][2] << 2);
1143 	}
1144 	for (i = VGA_TEXT_CMAP_ENTRIES; i < VGA8_CMAP_ENTRIES; i++) {
1145 		vga_put_cmap(&softc->regs, i, 0, 0, 0);
1146 	}
1147 
1148 	vgatext_save_colormap(softc);
1149 }
1150 
1151 static void
1152 vgatext_init(struct vgatext_softc *softc)
1153 {
1154 	unsigned char atr_mode;
1155 
1156 	atr_mode = vga_get_atr(&softc->regs, VGA_ATR_MODE);
1157 	if (atr_mode & VGA_ATR_MODE_GRAPH)
1158 		vgatext_set_text(softc);
1159 	atr_mode = vga_get_atr(&softc->regs, VGA_ATR_MODE);
1160 	atr_mode &= ~VGA_ATR_MODE_BLINK;
1161 	atr_mode &= ~VGA_ATR_MODE_9WIDE;
1162 	vga_set_atr(&softc->regs, VGA_ATR_MODE, atr_mode);
1163 #if	defined(USE_BORDERS)
1164 	vga_set_atr(&softc->regs, VGA_ATR_BDR_CLR,
1165 	    vga_get_atr(&softc->regs, VGA_BRIGHT_WHITE));
1166 #else
1167 	vga_set_atr(&softc->regs, VGA_ATR_BDR_CLR,
1168 	    vga_get_atr(&softc->regs, VGA_BLACK));
1169 #endif
1170 	vgatext_setfont(softc);	/* need selectable font? */
1171 }
1172 
1173 #if	defined(USE_BORDERS)
1174 static void
1175 vgatext_init_graphics(struct vgatext_softc *softc)
1176 {
1177 	vga_set_atr(&softc->regs, VGA_ATR_BDR_CLR,
1178 	    vga_get_atr(&softc->regs, VGA_BLACK));
1179 }
1180 #endif
1181 
1182 static void
1183 vgatext_setfont(struct vgatext_softc *softc)
1184 {
1185 	unsigned char *from;
1186 	unsigned char *to;
1187 	int	i;
1188 	int	j;
1189 	int	bpc;
1190 
1191 /*
1192  * The newboot code to use font plane 2 breaks NVIDIA
1193  * (and some ATI) behavior.  Revert back to the S10
1194  * code.
1195  */
1196 
1197 	/*
1198 	 * I'm embarassed to say that I don't know what these magic
1199 	 * sequences do, other than at the high level of "set the
1200 	 * memory window to allow font setup".  I stole them straight
1201 	 * from "kd"...
1202 	 */
1203 	vga_set_seq(&softc->regs, 0x02, 0x04);
1204 	vga_set_seq(&softc->regs, 0x04, 0x06);
1205 	vga_set_grc(&softc->regs, 0x05, 0x00);
1206 	vga_set_grc(&softc->regs, 0x06, 0x04);
1207 
1208 	/*
1209 	 * This assumes 8x16 characters, which yield the traditional 80x25
1210 	 * screen.  It really should support other character heights.
1211 	 */
1212 	bpc = 16;
1213 	for (i = 0; i < 256; i++) {
1214 		from = font_data_8x16.encoding[i];
1215 		to = (unsigned char *)softc->fb.addr + i * 0x20;
1216 		for (j = 0; j < bpc; j++)
1217 			*to++ = *from++;
1218 	}
1219 
1220 	vga_set_seq(&softc->regs, 0x02, 0x03);
1221 	vga_set_seq(&softc->regs, 0x04, 0x02);
1222 	vga_set_grc(&softc->regs, 0x04, 0x00);
1223 	vga_set_grc(&softc->regs, 0x05, 0x10);
1224 	vga_set_grc(&softc->regs, 0x06, 0x0e);
1225 
1226 }
1227 
1228 static void
1229 vgatext_save_colormap(struct vgatext_softc *softc)
1230 {
1231 	int i;
1232 
1233 	for (i = 0; i < VGA_ATR_NUM_PLT; i++) {
1234 		softc->attrib_palette[i] = vga_get_atr(&softc->regs, i);
1235 	}
1236 	for (i = 0; i < VGA8_CMAP_ENTRIES; i++) {
1237 		vga_get_cmap(&softc->regs, i,
1238 		    &softc->colormap[i].red,
1239 		    &softc->colormap[i].green,
1240 		    &softc->colormap[i].blue);
1241 	}
1242 }
1243 
1244 static void
1245 vgatext_restore_colormap(struct vgatext_softc *softc)
1246 {
1247 	int i;
1248 
1249 	for (i = 0; i < VGA_ATR_NUM_PLT; i++) {
1250 		vga_set_atr(&softc->regs, i, softc->attrib_palette[i]);
1251 	}
1252 	for (i = 0; i < VGA8_CMAP_ENTRIES; i++) {
1253 		vga_put_cmap(&softc->regs, i,
1254 		    softc->colormap[i].red,
1255 		    softc->colormap[i].green,
1256 		    softc->colormap[i].blue);
1257 	}
1258 }
1259 
1260 /*
1261  * search the entries of the "reg" property for one which has the desired
1262  * combination of phys_hi bits and contains the desired address.
1263  *
1264  * This version searches a PCI-style "reg" property.  It was prompted by
1265  * issues surrounding the presence or absence of an entry for the ROM:
1266  * (a) a transition problem with PowerPC Virtual Open Firmware
1267  * (b) uncertainty as to whether an entry will be included on a device
1268  *     with ROM support (and so an "active" ROM base address register),
1269  *     but no ROM actually installed.
1270  *
1271  * See the note below on vgatext_get_isa_reg_index for the reasons for
1272  * returning the offset.
1273  *
1274  * Note that this routine may not be fully general; it is intended for the
1275  * specific purpose of finding a couple of particular VGA reg entries and
1276  * may not be suitable for all reg-searching purposes.
1277  */
1278 static int
1279 vgatext_get_pci_reg_index(
1280 	dev_info_t *const devi,
1281 	unsigned long himask,
1282 	unsigned long hival,
1283 	unsigned long addr,
1284 	off_t *offset)
1285 {
1286 
1287 	int			length, index;
1288 	pci_regspec_t	*reg;
1289 
1290 	if (ddi_getlongprop(DDI_DEV_T_ANY, devi, DDI_PROP_DONTPASS,
1291 	    "reg", (caddr_t)&reg, &length) != DDI_PROP_SUCCESS) {
1292 		return (-1);
1293 	}
1294 
1295 	for (index = 0; index < length / sizeof (pci_regspec_t); index++) {
1296 		if ((reg[index].pci_phys_hi & himask) != hival)
1297 			continue;
1298 		if (reg[index].pci_size_hi != 0)
1299 			continue;
1300 		if (reg[index].pci_phys_mid != 0)
1301 			continue;
1302 		if (reg[index].pci_phys_low > addr)
1303 			continue;
1304 		if (reg[index].pci_phys_low + reg[index].pci_size_low <= addr)
1305 			continue;
1306 
1307 		*offset = addr - reg[index].pci_phys_low;
1308 		kmem_free(reg, (size_t)length);
1309 		return (index);
1310 	}
1311 	kmem_free(reg, (size_t)length);
1312 
1313 	return (-1);
1314 }
1315 
1316 /*
1317  * search the entries of the "reg" property for one which has the desired
1318  * combination of phys_hi bits and contains the desired address.
1319  *
1320  * This version searches a ISA-style "reg" property.  It was prompted by
1321  * issues surrounding 8514/A support.  By IEEE 1275 compatibility conventions,
1322  * 8514/A registers should have been added after all standard VGA registers.
1323  * Unfortunately, the Solaris/Intel device configuration framework
1324  * (a) lists the 8514/A registers before the video memory, and then
1325  * (b) also sorts the entries so that I/O entries come before memory
1326  *     entries.
1327  *
1328  * It returns the "reg" index and offset into that register set.
1329  * The offset is needed because there exist (broken?) BIOSes that
1330  * report larger ranges enclosing the standard ranges.  One reports
1331  * 0x3bf for 0x21 instead of 0x3c0 for 0x20, for instance.  Using the
1332  * offset adjusts for this difference in the base of the register set.
1333  *
1334  * Note that this routine may not be fully general; it is intended for the
1335  * specific purpose of finding a couple of particular VGA reg entries and
1336  * may not be suitable for all reg-searching purposes.
1337  */
1338 static int
1339 vgatext_get_isa_reg_index(
1340 	dev_info_t *const devi,
1341 	unsigned long hival,
1342 	unsigned long addr,
1343 	off_t *offset)
1344 {
1345 
1346 	int		length, index;
1347 	struct regspec	*reg;
1348 
1349 	if (ddi_getlongprop(DDI_DEV_T_ANY, devi, DDI_PROP_DONTPASS,
1350 	    "reg", (caddr_t)&reg, &length) != DDI_PROP_SUCCESS) {
1351 		return (-1);
1352 	}
1353 
1354 	for (index = 0; index < length / sizeof (struct regspec); index++) {
1355 		if (reg[index].regspec_bustype != hival)
1356 			continue;
1357 		if (reg[index].regspec_addr > addr)
1358 			continue;
1359 		if (reg[index].regspec_addr + reg[index].regspec_size <= addr)
1360 			continue;
1361 
1362 		*offset = addr - reg[index].regspec_addr;
1363 		kmem_free(reg, (size_t)length);
1364 		return (index);
1365 	}
1366 	kmem_free(reg, (size_t)length);
1367 
1368 	return (-1);
1369 }
1370 
1371 /*
1372  * This vgatext function is used to return the fb, and reg pointers
1373  * and handles for peer graphics drivers.
1374  */
1375 
1376 void
1377 vgatext_return_pointers(struct vgatext_softc *softc, struct vgaregmap *fbs,
1378     struct vgaregmap *regss)
1379 {
1380 
1381 	fbs->addr	= softc->fb.addr;
1382 	fbs->handle	= softc->fb.handle;
1383 	fbs->mapped	= softc->fb.mapped;
1384 	regss->addr	= softc->regs.addr;
1385 	regss->handle	= softc->regs.handle;
1386 	regss->mapped	= softc->regs.mapped;
1387 }
1388 
1389 
1390 /*
1391  * ****************************************************************
1392  * If we had a "bitmap" console implementation, it could
1393  * use the functions below to cooperate with DRM.
1394  */
1395 
1396 
1397 /*
1398  * If we had "bitmap" console support, this would
1399  * register call-back functions: drm_gfxp_setmode,
1400  * (and maybe others for blt, copy, clear) for the
1401  * "bitmap" console to use.
1402  *
1403  * The current (text) console doesn't need it.
1404  */
1405 /* ARGSUSED */
1406 void
1407 gfxp_bm_register_fbops(gfxp_fb_softc_ptr_t softc,
1408     struct gfxp_blt_ops *ops)
1409 {
1410 }
1411 
1412 /*
1413  * This is patchable with mdb, i.e.:
1414  *	$ mdb -w /platform/i86pc/kernel/misc/amd64/gfx_private
1415  *	> gfxp_fb_info?ddVV
1416  *	1024    768     32      24
1417  */
1418 struct gfxp_bm_fb_info gfxp_fb_info = {
1419 	.xres = 1024,
1420 	.yres = 768,
1421 	.bpp = 32,
1422 	.depth = 24,
1423 };
1424 
1425 /*
1426  * If we had "bitmap" console support, this would
1427  * ask the size of it. (how is TBD)
1428  *
1429  * Just guess (for now)
1430  */
1431 void
1432 gfxp_bm_getfb_info(gfxp_fb_softc_ptr_t softc,
1433     struct gfxp_bm_fb_info *fbip)
1434 {
1435 	_NOTE(ARGUNUSED(softc))
1436 
1437 	*fbip = gfxp_fb_info;
1438 }
1439