xref: /netbsd-src/sys/dev/pci/gffb.c (revision 6a493d6bc668897c91594964a732d38505b70cbb)
1 /*	$NetBSD: gffb.c,v 1.7 2013/10/23 13:15:47 macallan Exp $	*/
2 
3 /*
4  * Copyright (c) 2013 Michael Lorenz
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 
28 /*
29  * A console driver for nvidia geforce graphics controllers
30  * tested on macppc only so far, should work on other hardware as long as
31  * something sets up a usable graphics mode and sets the right device properties
32  * This driver should work with all NV1x hardware but so far it's been tested
33  * only on NV11 / GeForce2 MX. Needs testing with more hardware and if
34  * successful, PCI IDs need to be added to gffb_match()
35  */
36 
37 #include <sys/cdefs.h>
38 __KERNEL_RCSID(0, "$NetBSD: gffb.c,v 1.7 2013/10/23 13:15:47 macallan Exp $");
39 
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/kernel.h>
43 #include <sys/device.h>
44 #include <sys/malloc.h>
45 #include <sys/lwp.h>
46 #include <sys/kauth.h>
47 #include <sys/atomic.h>
48 
49 #include <dev/videomode/videomode.h>
50 
51 #include <dev/pci/pcivar.h>
52 #include <dev/pci/pcireg.h>
53 #include <dev/pci/pcidevs.h>
54 #include <dev/pci/pciio.h>
55 #include <dev/pci/gffbreg.h>
56 
57 #include <dev/wscons/wsdisplayvar.h>
58 #include <dev/wscons/wsconsio.h>
59 #include <dev/wsfont/wsfont.h>
60 #include <dev/rasops/rasops.h>
61 #include <dev/wscons/wsdisplay_vconsvar.h>
62 #include <dev/pci/wsdisplay_pci.h>
63 #include <dev/wscons/wsdisplay_glyphcachevar.h>
64 
65 #include <dev/i2c/i2cvar.h>
66 
67 #include "opt_gffb.h"
68 #include "opt_vcons.h"
69 
70 #ifdef GFFB_DEBUG
71 #define DPRINTF printf
72 #else
73 #define DPRINTF while(0) printf
74 #endif
75 
76 struct gffb_softc {
77 	device_t sc_dev;
78 
79 	pci_chipset_tag_t sc_pc;
80 	pcitag_t sc_pcitag;
81 
82 	bus_space_tag_t sc_memt;
83 	bus_space_tag_t sc_iot;
84 
85 	bus_space_handle_t sc_regh, sc_fbh;
86 	bus_addr_t sc_fb, sc_reg;
87 	bus_size_t sc_fbsize, sc_regsize;
88 	uint8_t *sc_fbaddr;
89 	size_t sc_vramsize;
90 
91 	int sc_width, sc_height, sc_depth, sc_stride;
92 	int sc_locked;
93 	struct vcons_screen sc_console_screen;
94 	struct wsscreen_descr sc_defaultscreen_descr;
95 	const struct wsscreen_descr *sc_screens[1];
96 	struct wsscreen_list sc_screenlist;
97 	struct vcons_data vd;
98 	int sc_mode;
99 	u_char sc_cmap_red[256];
100 	u_char sc_cmap_green[256];
101 	u_char sc_cmap_blue[256];
102 	int sc_put, sc_current, sc_free;
103 	uint32_t sc_rop;
104 	void (*sc_putchar)(void *, int, int, u_int, long);
105 	kmutex_t sc_lock;
106 	glyphcache sc_gc;
107 };
108 
109 static int	gffb_match(device_t, cfdata_t, void *);
110 static void	gffb_attach(device_t, device_t, void *);
111 
112 CFATTACH_DECL_NEW(gffb, sizeof(struct gffb_softc),
113     gffb_match, gffb_attach, NULL, NULL);
114 
115 static int	gffb_ioctl(void *, void *, u_long, void *, int,
116 			     struct lwp *);
117 static paddr_t	gffb_mmap(void *, void *, off_t, int);
118 static void	gffb_init_screen(void *, struct vcons_screen *, int, long *);
119 
120 static int	gffb_putcmap(struct gffb_softc *, struct wsdisplay_cmap *);
121 static int 	gffb_getcmap(struct gffb_softc *, struct wsdisplay_cmap *);
122 static void	gffb_restore_palette(struct gffb_softc *);
123 static int 	gffb_putpalreg(struct gffb_softc *, uint8_t, uint8_t,
124 			    uint8_t, uint8_t);
125 
126 static void	gffb_init(struct gffb_softc *);
127 
128 static void	gffb_make_room(struct gffb_softc *, int);
129 static void	gffb_sync(struct gffb_softc *);
130 
131 static void	gffb_rectfill(struct gffb_softc *, int, int, int, int,
132 			    uint32_t);
133 static void	gffb_bitblt(void *, int, int, int, int, int,
134 			    int, int);
135 static void	gffb_rop(struct gffb_softc *, int);
136 
137 static void	gffb_cursor(void *, int, int, int);
138 static void	gffb_putchar(void *, int, int, u_int, long);
139 static void	gffb_copycols(void *, int, int, int, int);
140 static void	gffb_erasecols(void *, int, int, int, long);
141 static void	gffb_copyrows(void *, int, int, int);
142 static void	gffb_eraserows(void *, int, int, long);
143 
144 #define GFFB_READ_4(o) bus_space_read_4(sc->sc_memt, sc->sc_regh, (o))
145 #define GFFB_WRITE_4(o, v) bus_space_write_4(sc->sc_memt, sc->sc_regh, (o), (v))
146 
147 struct wsdisplay_accessops gffb_accessops = {
148 	gffb_ioctl,
149 	gffb_mmap,
150 	NULL,	/* alloc_screen */
151 	NULL,	/* free_screen */
152 	NULL,	/* show_screen */
153 	NULL, 	/* load_font */
154 	NULL,	/* pollc */
155 	NULL	/* scroll */
156 };
157 
158 static int
159 gffb_match(device_t parent, cfdata_t match, void *aux)
160 {
161 	struct pci_attach_args *pa = (struct pci_attach_args *)aux;
162 
163 	if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY)
164 		return 0;
165 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA)
166 		return 0;
167 
168 	/* only card tested on so far - likely need a list */
169 	if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_NVIDIA_GEFORCE2MX)
170 		return 100;
171 	return (0);
172 }
173 
174 static void
175 gffb_attach(device_t parent, device_t self, void *aux)
176 {
177 	struct gffb_softc	*sc = device_private(self);
178 	struct pci_attach_args	*pa = aux;
179 	struct rasops_info	*ri;
180 	bus_space_tag_t		tag;
181 	struct wsemuldisplaydev_attach_args aa;
182 	prop_dictionary_t	dict;
183 	unsigned long		defattr;
184 	bool			is_console;
185 	int			i, j, f;
186 	uint8_t			cmap[768];
187 
188 	sc->sc_pc = pa->pa_pc;
189 	sc->sc_pcitag = pa->pa_tag;
190 	sc->sc_memt = pa->pa_memt;
191 	sc->sc_iot = pa->pa_iot;
192 	sc->sc_dev = self;
193 
194 	pci_aprint_devinfo(pa, NULL);
195 
196 	/* fill in parameters from properties */
197 	dict = device_properties(self);
198 	if (!prop_dictionary_get_uint32(dict, "width", &sc->sc_width)) {
199 		aprint_error("%s: no width property\n", device_xname(self));
200 		return;
201 	}
202 	if (!prop_dictionary_get_uint32(dict, "height", &sc->sc_height)) {
203 		aprint_error("%s: no height property\n", device_xname(self));
204 		return;
205 	}
206 
207 #ifdef GLYPHCACHE_DEBUG
208 	/* leave some visible VRAM unused so we can see the glyph cache */
209 	sc->sc_height -= 300;
210 #endif
211 
212 	if (!prop_dictionary_get_uint32(dict, "depth", &sc->sc_depth)) {
213 		aprint_error("%s: no depth property\n", device_xname(self));
214 		return;
215 	}
216 	if (!prop_dictionary_get_uint32(dict, "linebytes", &sc->sc_stride)) {
217 		aprint_error("%s: no linebytes property\n",
218 		    device_xname(self));
219 		return;
220 	}
221 
222 	prop_dictionary_get_bool(dict, "is_console", &is_console);
223 
224 	if (pci_mapreg_map(pa, 0x10, PCI_MAPREG_TYPE_MEM, 0,
225 	    &tag, &sc->sc_regh, &sc->sc_reg, &sc->sc_regsize)) {
226 		aprint_error("%s: failed to map registers.\n",
227 		    device_xname(sc->sc_dev));
228 	}
229 	sc->sc_vramsize = GFFB_READ_4(GFFB_VRAM) & 0xfff00000;
230 
231 	/* don't map more VRAM than we actually have */
232 	if (pci_mapreg_info(sc->sc_pc, sc->sc_pcitag,
233 	    0x14, PCI_MAPREG_TYPE_MEM, &sc->sc_fb, &sc->sc_fbsize, &f)) {
234 		aprint_error("%s: can't find the framebuffer?!\n",
235 		    device_xname(sc->sc_dev));
236 	}
237 
238 	if (bus_space_map(sc->sc_memt, sc->sc_fb, sc->sc_vramsize,
239 	    BUS_SPACE_MAP_PREFETCHABLE | BUS_SPACE_MAP_LINEAR,
240 	    &sc->sc_fbh)) {
241 		aprint_error("%s: failed to map the framebuffer.\n",
242 		    device_xname(sc->sc_dev));
243 	}
244 	sc->sc_fbaddr = bus_space_vaddr(tag, sc->sc_fbh);
245 
246 	aprint_normal("%s: %d MB aperture at 0x%08x\n", device_xname(self),
247 	    (int)(sc->sc_fbsize >> 20), (uint32_t)sc->sc_fb);
248 	aprint_normal_dev(sc->sc_dev, "%d MB video memory\n",
249 	    sc->sc_vramsize >> 20);
250 
251 	sc->sc_defaultscreen_descr = (struct wsscreen_descr){
252 		"default",
253 		0, 0,
254 		NULL,
255 		8, 16,
256 		WSSCREEN_WSCOLORS | WSSCREEN_HILIT,
257 		NULL
258 	};
259 	sc->sc_screens[0] = &sc->sc_defaultscreen_descr;
260 	sc->sc_screenlist = (struct wsscreen_list){1, sc->sc_screens};
261 	sc->sc_mode = WSDISPLAYIO_MODE_EMUL;
262 	sc->sc_locked = 0;
263 
264 #ifdef GFFB_DEBUG
265 	printf("put: %08x\n", GFFB_READ_4(GFFB_FIFO_PUT));
266 	printf("get: %08x\n", GFFB_READ_4(GFFB_FIFO_GET));
267 #endif
268 
269 	/*
270 	 * we don't have hardware synchronization so we need a lock to serialize
271 	 * access to the DMA buffer between normal and kernel output
272 	 * actually it might be enough to use atomic ops on sc_current, sc_free
273 	 * etc. but for now we'll play it safe
274 	 * XXX we will probably deadlock if we take an interrupt while sc_lock
275 	 * is held and then try to printf()
276 	 */
277 	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
278 
279 	/* init engine here */
280 	gffb_init(sc);
281 
282 	vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr,
283 	    &gffb_accessops);
284 	sc->vd.init_screen = gffb_init_screen;
285 
286 
287 	ri = &sc->sc_console_screen.scr_ri;
288 
289 	sc->sc_gc.gc_bitblt = gffb_bitblt;
290 	sc->sc_gc.gc_blitcookie = sc;
291 	sc->sc_gc.gc_rop = 0xcc;
292 
293 	if (is_console) {
294 		vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1,
295 		    &defattr);
296 		sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC;
297 
298 		gffb_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height,
299 		    ri->ri_devcmap[(defattr >> 16) & 0xf]);
300 
301 		sc->sc_defaultscreen_descr.textops = &ri->ri_ops;
302 		sc->sc_defaultscreen_descr.capabilities = ri->ri_caps;
303 		sc->sc_defaultscreen_descr.nrows = ri->ri_rows;
304 		sc->sc_defaultscreen_descr.ncols = ri->ri_cols;
305 
306 		glyphcache_init(&sc->sc_gc, sc->sc_height + 5,
307 				(0x800000 / sc->sc_stride) - sc->sc_height - 5,
308 				sc->sc_width,
309 				ri->ri_font->fontwidth,
310 				ri->ri_font->fontheight,
311 				defattr);
312 
313 		wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, 0,
314 		    defattr);
315 		vcons_replay_msgbuf(&sc->sc_console_screen);
316 	} else {
317 		/*
318 		 * since we're not the console we can postpone the rest
319 		 * until someone actually allocates a screen for us
320 		 */
321 		if (sc->sc_console_screen.scr_ri.ri_rows == 0) {
322 			/* do some minimal setup to avoid weirdnesses later */
323 			vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1,
324 			    &defattr);
325 		} else
326 			(*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr);
327 
328 		glyphcache_init(&sc->sc_gc, sc->sc_height + 5,
329 				(0x800000 / sc->sc_stride) - sc->sc_height - 5,
330 				sc->sc_width,
331 				ri->ri_font->fontwidth,
332 				ri->ri_font->fontheight,
333 				defattr);
334 	}
335 
336 	j = 0;
337 	rasops_get_cmap(ri, cmap, sizeof(cmap));
338 	for (i = 0; i < 256; i++) {
339 		sc->sc_cmap_red[i] = cmap[j];
340 		sc->sc_cmap_green[i] = cmap[j + 1];
341 		sc->sc_cmap_blue[i] = cmap[j + 2];
342 		gffb_putpalreg(sc, i, cmap[j], cmap[j + 1], cmap[j + 2]);
343 		j += 3;
344 	}
345 
346 	/* no suspend/resume support yet */
347 	pmf_device_register(sc->sc_dev, NULL, NULL);
348 
349 	aa.console = is_console;
350 	aa.scrdata = &sc->sc_screenlist;
351 	aa.accessops = &gffb_accessops;
352 	aa.accesscookie = &sc->vd;
353 
354 	config_found(sc->sc_dev, &aa, wsemuldisplaydevprint);
355 
356 #ifdef GFFB_DEBUG
357 	for (i = 0; i < 40; i++) {
358 		for (j = 0; j < 40; j++) {
359 			gffb_rectfill(sc, i * 20, j * 20, 20, 20,
360 			    (i + j ) & 1 ? 0xe0e0e0e0 : 0x03030303);
361 		}
362 	}
363 
364 	gffb_rectfill(sc, 0, 800, 1280, 224, 0x92929292);
365 	gffb_bitblt(sc, 0, 10, 10, 810, 200, 20, 0xcc);
366 	gffb_bitblt(sc, 0, 10, 10, 840, 300, 20, 0xcc);
367 	gffb_bitblt(sc, 0, 10, 10, 870, 400, 20, 0xcc);
368 	gffb_bitblt(sc, 0, 10, 10, 900, 500, 20, 0xcc);
369 	gffb_bitblt(sc, 0, 10, 10, 930, 600, 20, 0xcc);
370 	gffb_bitblt(sc, 0, 10, 610, 810, 200, 20, 0xcc);
371 	gffb_bitblt(sc, 0, 10, 610, 840, 300, 20, 0xcc);
372 	gffb_bitblt(sc, 0, 10, 610, 870, 400, 20, 0xcc);
373 	gffb_bitblt(sc, 0, 10, 610, 900, 500, 20, 0xcc);
374 	gffb_bitblt(sc, 0, 10, 610, 930, 600, 20, 0xcc);
375 	gffb_sync(sc);
376 	printf("put %x current %x\n", sc->sc_put, sc->sc_current);
377 #endif
378 }
379 
380 static int
381 gffb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
382 	struct lwp *l)
383 {
384 	struct vcons_data *vd = v;
385 	struct gffb_softc *sc = vd->cookie;
386 	struct wsdisplay_fbinfo *wdf;
387 	struct vcons_screen *ms = vd->active;
388 
389 	switch (cmd) {
390 	case WSDISPLAYIO_GTYPE:
391 		*(u_int *)data = WSDISPLAY_TYPE_PCIMISC;
392 		return 0;
393 
394 	/* PCI config read/write passthrough. */
395 	case PCI_IOC_CFGREAD:
396 	case PCI_IOC_CFGWRITE:
397 		return pci_devioctl(sc->sc_pc, sc->sc_pcitag,
398 		    cmd, data, flag, l);
399 
400 	case WSDISPLAYIO_GET_BUSID:
401 		return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc,
402 		    sc->sc_pcitag, data);
403 
404 	case WSDISPLAYIO_GINFO:
405 		if (ms == NULL)
406 			return ENODEV;
407 		wdf = (void *)data;
408 		wdf->height = ms->scr_ri.ri_height;
409 		wdf->width = ms->scr_ri.ri_width;
410 		wdf->depth = ms->scr_ri.ri_depth;
411 		wdf->cmsize = 256;
412 		return 0;
413 
414 	case WSDISPLAYIO_GETCMAP:
415 		return gffb_getcmap(sc,
416 		    (struct wsdisplay_cmap *)data);
417 
418 	case WSDISPLAYIO_PUTCMAP:
419 		return gffb_putcmap(sc,
420 		    (struct wsdisplay_cmap *)data);
421 
422 	case WSDISPLAYIO_LINEBYTES:
423 		*(u_int *)data = sc->sc_stride;
424 		return 0;
425 
426 	case WSDISPLAYIO_SMODE: {
427 		int new_mode = *(int*)data;
428 		if (new_mode != sc->sc_mode) {
429 			sc->sc_mode = new_mode;
430 			if(new_mode == WSDISPLAYIO_MODE_EMUL) {
431 				gffb_init(sc);
432 				gffb_restore_palette(sc);
433 				glyphcache_wipe(&sc->sc_gc);
434 				gffb_rectfill(sc, 0, 0, sc->sc_width,
435 				    sc->sc_height, ms->scr_ri.ri_devcmap[
436 				    (ms->scr_defattr >> 16) & 0xf]);
437 				vcons_redraw_screen(ms);
438 			}
439 		}
440 		}
441 		return 0;
442 
443 	case WSDISPLAYIO_GET_EDID: {
444 		struct wsdisplayio_edid_info *d = data;
445 		return wsdisplayio_get_edid(sc->sc_dev, d);
446 	}
447 
448 	case WSDISPLAYIO_GET_FBINFO: {
449 		struct wsdisplayio_fbinfo *fbi = data;
450 		return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi);
451 	}
452 	}
453 	return EPASSTHROUGH;
454 }
455 
456 static paddr_t
457 gffb_mmap(void *v, void *vs, off_t offset, int prot)
458 {
459 	struct vcons_data *vd = v;
460 	struct gffb_softc *sc = vd->cookie;
461 	paddr_t pa;
462 
463 	/* 'regular' framebuffer mmap()ing */
464 	if (offset < sc->sc_vramsize) {
465 		pa = bus_space_mmap(sc->sc_memt, sc->sc_fb + offset + 0x2000,
466 		    0, prot, BUS_SPACE_MAP_LINEAR);
467 		return pa;
468 	}
469 
470 	/*
471 	 * restrict all other mappings to processes with superuser privileges
472 	 * or the kernel itself
473 	 */
474 	if (kauth_authorize_machdep(kauth_cred_get(),
475 	    KAUTH_MACHDEP_UNMANAGEDMEM,
476 	    NULL, NULL, NULL, NULL) != 0) {
477 		aprint_normal("%s: mmap() rejected.\n",
478 		    device_xname(sc->sc_dev));
479 		return -1;
480 	}
481 
482 	if ((offset >= sc->sc_fb) && (offset < (sc->sc_fb + sc->sc_fbsize))) {
483 		pa = bus_space_mmap(sc->sc_memt, offset, 0, prot,
484 		    BUS_SPACE_MAP_LINEAR);
485 		return pa;
486 	}
487 
488 	if ((offset >= sc->sc_reg) &&
489 	    (offset < (sc->sc_reg + sc->sc_regsize))) {
490 		pa = bus_space_mmap(sc->sc_memt, offset, 0, prot,
491 		    BUS_SPACE_MAP_LINEAR);
492 		return pa;
493 	}
494 
495 #ifdef PCI_MAGIC_IO_RANGE
496 	/* allow mapping of IO space */
497 	if ((offset >= PCI_MAGIC_IO_RANGE) &&
498 	    (offset < PCI_MAGIC_IO_RANGE + 0x10000)) {
499 		pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE,
500 		    0, prot, BUS_SPACE_MAP_LINEAR);
501 		return pa;
502 	}
503 #endif
504 
505 	return -1;
506 }
507 
508 static void
509 gffb_init_screen(void *cookie, struct vcons_screen *scr,
510     int existing, long *defattr)
511 {
512 	struct gffb_softc *sc = cookie;
513 	struct rasops_info *ri = &scr->scr_ri;
514 
515 	ri->ri_depth = sc->sc_depth;
516 	ri->ri_width = sc->sc_width;
517 	ri->ri_height = sc->sc_height;
518 	ri->ri_stride = sc->sc_stride;
519 	ri->ri_bits = sc->sc_fbaddr + 0x2000;
520 	ri->ri_flg = RI_CENTER;
521 	if (sc->sc_depth == 8)
522 		ri->ri_flg |= RI_8BIT_IS_RGB | RI_ENABLE_ALPHA;
523 
524 	rasops_init(ri, 0, 0);
525 	ri->ri_caps = WSSCREEN_WSCOLORS;
526 
527 	rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight,
528 		    sc->sc_width / ri->ri_font->fontwidth);
529 
530 	ri->ri_hw = scr;
531 
532 	sc->sc_putchar = ri->ri_ops.putchar;
533 	ri->ri_ops.copyrows = gffb_copyrows;
534 	ri->ri_ops.copycols = gffb_copycols;
535 	ri->ri_ops.eraserows = gffb_eraserows;
536 	ri->ri_ops.erasecols = gffb_erasecols;
537 	ri->ri_ops.cursor = gffb_cursor;
538 	ri->ri_ops.putchar = gffb_putchar;
539 }
540 
541 static int
542 gffb_putcmap(struct gffb_softc *sc, struct wsdisplay_cmap *cm)
543 {
544 	u_char *r, *g, *b;
545 	u_int index = cm->index;
546 	u_int count = cm->count;
547 	int i, error;
548 	u_char rbuf[256], gbuf[256], bbuf[256];
549 
550 #ifdef GFFB_DEBUG
551 	aprint_debug("putcmap: %d %d\n",index, count);
552 #endif
553 	if (cm->index >= 256 || cm->count > 256 ||
554 	    (cm->index + cm->count) > 256)
555 		return EINVAL;
556 	error = copyin(cm->red, &rbuf[index], count);
557 	if (error)
558 		return error;
559 	error = copyin(cm->green, &gbuf[index], count);
560 	if (error)
561 		return error;
562 	error = copyin(cm->blue, &bbuf[index], count);
563 	if (error)
564 		return error;
565 
566 	memcpy(&sc->sc_cmap_red[index], &rbuf[index], count);
567 	memcpy(&sc->sc_cmap_green[index], &gbuf[index], count);
568 	memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count);
569 
570 	r = &sc->sc_cmap_red[index];
571 	g = &sc->sc_cmap_green[index];
572 	b = &sc->sc_cmap_blue[index];
573 
574 	for (i = 0; i < count; i++) {
575 		gffb_putpalreg(sc, index, *r, *g, *b);
576 		index++;
577 		r++, g++, b++;
578 	}
579 	return 0;
580 }
581 
582 static int
583 gffb_getcmap(struct gffb_softc *sc, struct wsdisplay_cmap *cm)
584 {
585 	u_int index = cm->index;
586 	u_int count = cm->count;
587 	int error;
588 
589 	if (index >= 255 || count > 256 || index + count > 256)
590 		return EINVAL;
591 
592 	error = copyout(&sc->sc_cmap_red[index],   cm->red,   count);
593 	if (error)
594 		return error;
595 	error = copyout(&sc->sc_cmap_green[index], cm->green, count);
596 	if (error)
597 		return error;
598 	error = copyout(&sc->sc_cmap_blue[index],  cm->blue,  count);
599 	if (error)
600 		return error;
601 
602 	return 0;
603 }
604 
605 static void
606 gffb_restore_palette(struct gffb_softc *sc)
607 {
608 	int i;
609 
610 	for (i = 0; i < (1 << sc->sc_depth); i++) {
611 		gffb_putpalreg(sc, i, sc->sc_cmap_red[i],
612 		    sc->sc_cmap_green[i], sc->sc_cmap_blue[i]);
613 	}
614 }
615 
616 static int
617 gffb_putpalreg(struct gffb_softc *sc, uint8_t idx, uint8_t r, uint8_t g,
618     uint8_t b)
619 {
620 	/* port 0 */
621 	bus_space_write_1(sc->sc_memt, sc->sc_regh,
622 	    GFFB_PDIO0 + GFFB_PEL_IW, idx);
623 	bus_space_write_1(sc->sc_memt, sc->sc_regh,
624 	    GFFB_PDIO0 + GFFB_PEL_D, r);
625 	bus_space_write_1(sc->sc_memt, sc->sc_regh,
626 	    GFFB_PDIO0 + GFFB_PEL_D, g);
627 	bus_space_write_1(sc->sc_memt, sc->sc_regh,
628 	    GFFB_PDIO0 + GFFB_PEL_D, b);
629 
630 	/* port 1 */
631 	bus_space_write_1(sc->sc_memt, sc->sc_regh,
632 	    GFFB_PDIO1 + GFFB_PEL_IW, idx);
633 	bus_space_write_1(sc->sc_memt, sc->sc_regh,
634 	    GFFB_PDIO1 + GFFB_PEL_D, r);
635 	bus_space_write_1(sc->sc_memt, sc->sc_regh,
636 	    GFFB_PDIO1 + GFFB_PEL_D, g);
637 	bus_space_write_1(sc->sc_memt, sc->sc_regh,
638 	    GFFB_PDIO1 + GFFB_PEL_D, b);
639 
640 	return 0;
641 }
642 
643 
644 static void
645 gffb_dma_kickoff(struct gffb_softc *sc)
646 {
647 	volatile uint8_t scratch;
648 
649 	if(sc->sc_current != sc->sc_put) {
650 		sc->sc_put = sc->sc_current;
651 		membar_sync();
652 		scratch = *sc->sc_fbaddr;
653 		GFFB_WRITE_4(GFFB_FIFO_PUT, sc->sc_put);
654 		membar_sync();
655 	}
656 }
657 
658 static void
659 gffb_dmanext(struct gffb_softc *sc, uint32_t data)
660 {
661 	bus_space_write_stream_4(sc->sc_memt, sc->sc_fbh, sc->sc_current, data);
662 	sc->sc_current += 4;
663 }
664 
665 static void
666 gffb_dmastart(struct gffb_softc *sc, uint32_t tag, int size)
667 {
668 	if(sc->sc_free <= (size << 2))
669 		gffb_make_room(sc, size);
670 	gffb_dmanext(sc, ((size) << 18) | (tag));
671 	sc->sc_free -= ((size + 1) << 2);
672 }
673 
674 /*
675  * from xf86_video_nv/nv_xaa.c:
676  * There is a HW race condition with videoram command buffers.
677  * You can't jump to the location of your put offset.  We write put
678  * at the jump offset + SKIPS dwords with noop padding in between
679  * to solve this problem
680  */
681 
682 #define SKIPS  8
683 
684 static void
685 gffb_make_room(struct gffb_softc *sc, int size)
686 {
687 	uint32_t get;
688 
689 	size = (size + 1) << 2;	/* slots -> offset */
690 
691 	while (sc->sc_free < size) {
692 		get = GFFB_READ_4(GFFB_FIFO_GET);
693 
694 		if (sc->sc_put >= get) {
695 			sc->sc_free = 0x2000 - sc->sc_current;
696 			if (sc->sc_free < size) {
697 				gffb_dmanext(sc, 0x20000000);
698 				if(get <= (SKIPS << 2)) {
699 					if (sc->sc_put <= (SKIPS << 2)) {
700 						/* corner case - will be idle */
701 						GFFB_WRITE_4(GFFB_FIFO_PUT,
702 						    (SKIPS + 1) << 2);
703 					}
704 					do {
705 						get =GFFB_READ_4(GFFB_FIFO_GET);
706 					} while (get <= (SKIPS << 2));
707 				}
708 				GFFB_WRITE_4(GFFB_FIFO_PUT, SKIPS << 2);
709 				sc->sc_current = sc->sc_put = (SKIPS << 2);
710 				sc->sc_free = get - ((SKIPS + 1) << 2);
711 			}
712 		} else
713 			sc->sc_free = get - sc->sc_current - 4;
714 	}
715 }
716 
717 static void
718 gffb_sync(struct gffb_softc *sc)
719 {
720 	int bail;
721 	int i;
722 
723 	/*
724 	 * if there are commands in the buffer make sure the chip is actually
725 	 * trying to run them
726 	 */
727 	gffb_dma_kickoff(sc);
728 
729 	/* now wait for the command buffer to drain... */
730 	bail = 100000000;
731 	while ((GFFB_READ_4(GFFB_FIFO_GET) != sc->sc_put) && (bail > 0)) {
732 		bail--;
733 	}
734 	if (bail == 0) goto crap;
735 
736 	/* ... and for the engine to go idle */
737 	bail = 100000000;
738 	while((GFFB_READ_4(GFFB_BUSY) != 0) && (bail > 0)) {
739 		bail--;
740 	}
741 	if (bail == 0) goto crap;
742 	return;
743 crap:
744 	/* if we time out fill the buffer with NOPs and cross fingers */
745 	sc->sc_put = 0;
746 	sc->sc_current = 0;
747 	for (i = 0; i < 0x2000; i += 4)
748 		bus_space_write_stream_4(sc->sc_memt, sc->sc_fbh, i, 0);
749 	aprint_error_dev(sc->sc_dev, "DMA lockup\n");
750 }
751 
752 static void
753 gffb_init(struct gffb_softc *sc)
754 {
755 	int i;
756 	uint32_t foo;
757 
758 	/* init display start */
759 	GFFB_WRITE_4(GFFB_CRTC0 + GFFB_DISPLAYSTART, 0x2000);
760 	GFFB_WRITE_4(GFFB_CRTC1 + GFFB_DISPLAYSTART, 0x2000);
761 	GFFB_WRITE_4(GFFB_PDIO0 + GFFB_PEL_MASK, 0xff);
762 	GFFB_WRITE_4(GFFB_PDIO1 + GFFB_PEL_MASK, 0xff);
763 
764 	/* DMA stuff. A whole lot of magic number voodoo from xf86-video-nv */
765 	GFFB_WRITE_4(GFFB_PMC + 0x140, 0);
766 	GFFB_WRITE_4(GFFB_PMC + 0x200, 0xffff00ff);
767 	GFFB_WRITE_4(GFFB_PMC + 0x200, 0xffffffff);
768 	GFFB_WRITE_4(GFFB_PTIMER + 0x800, 8);
769 	GFFB_WRITE_4(GFFB_PTIMER + 0x840, 3);
770 	GFFB_WRITE_4(GFFB_PTIMER + 0x500, 0);
771 	GFFB_WRITE_4(GFFB_PTIMER + 0x400, 0xffffffff);
772 	for (i = 0; i < 8; i++) {
773 		GFFB_WRITE_4(GFFB_PMC + 0x240 + (i * 0x10), 0);
774 		GFFB_WRITE_4(GFFB_PMC + 0x244 + (i * 0x10),
775 		    sc->sc_vramsize - 1);
776 	}
777 
778 	for (i = 0; i < 8; i++) {
779 		GFFB_WRITE_4(GFFB_PFB + 0x0240 + (i * 0x10), 0);
780 		GFFB_WRITE_4(GFFB_PFB + 0x0244 + (i * 0x10),
781 		    sc->sc_vramsize - 1);
782 	}
783 
784 	GFFB_WRITE_4(GFFB_PRAMIN, 0x80000010);
785 	GFFB_WRITE_4(GFFB_PRAMIN + 0x04, 0x80011201);
786 	GFFB_WRITE_4(GFFB_PRAMIN + 0x08, 0x80000011);
787 	GFFB_WRITE_4(GFFB_PRAMIN + 0x0c, 0x80011202);
788 	GFFB_WRITE_4(GFFB_PRAMIN + 0x10, 0x80000012);
789 	GFFB_WRITE_4(GFFB_PRAMIN + 0x14, 0x80011203);
790 	GFFB_WRITE_4(GFFB_PRAMIN + 0x18, 0x80000013);
791 	GFFB_WRITE_4(GFFB_PRAMIN + 0x1c, 0x80011204);
792 	GFFB_WRITE_4(GFFB_PRAMIN + 0x20, 0x80000014);
793 	GFFB_WRITE_4(GFFB_PRAMIN + 0x24, 0x80011205);
794 	GFFB_WRITE_4(GFFB_PRAMIN + 0x28, 0x80000015);
795 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2c, 0x80011206);
796 	GFFB_WRITE_4(GFFB_PRAMIN + 0x30, 0x80000016);
797 	GFFB_WRITE_4(GFFB_PRAMIN + 0x34, 0x80011207);
798 	GFFB_WRITE_4(GFFB_PRAMIN + 0x38, 0x80000017);
799 	GFFB_WRITE_4(GFFB_PRAMIN + 0x3c, 0x80011208);
800 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2000, 0x00003000);
801 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2004, sc->sc_vramsize - 1);
802 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2008, 0x00000002);
803 	GFFB_WRITE_4(GFFB_PRAMIN + 0x200c, 0x00000002);
804 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2010, 0x01008042);	/* different for nv40 */
805 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2014, 0);
806 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2018, 0x12001200);
807 	GFFB_WRITE_4(GFFB_PRAMIN + 0x201c, 0);
808 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2020, 0x01008043);
809 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2024, 0);
810 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2028, 0);
811 	GFFB_WRITE_4(GFFB_PRAMIN + 0x202c, 0);
812 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2030, 0x01008044);
813 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2034, 0x00000002);
814 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2038, 0);
815 	GFFB_WRITE_4(GFFB_PRAMIN + 0x203c, 0);
816 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2040, 0x01008019);
817 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2044, 0);
818 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2048, 0);
819 	GFFB_WRITE_4(GFFB_PRAMIN + 0x204c, 0);
820 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2050, 0x0100a05c);
821 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2054, 0);
822 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2058, 0);
823 	GFFB_WRITE_4(GFFB_PRAMIN + 0x205c, 0);
824 	/* XXX 0x0100805f if !WaitVSynvPossible */
825 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2060, 0x0100809f);
826 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2064, 0);
827 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2068, 0x12001200);
828 	GFFB_WRITE_4(GFFB_PRAMIN + 0x206c, 0);
829 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2070, 0x0100804a);
830 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2074, 0x00000002);
831 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2078, 0);
832 	GFFB_WRITE_4(GFFB_PRAMIN + 0x207c, 0);
833 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2080, 0x01018077);
834 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2084, 0);
835 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2088, 0x12001200);
836 	GFFB_WRITE_4(GFFB_PRAMIN + 0x208c, 0);
837 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2090, 0x00003002);
838 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2094, 0x00007fff);
839 	/* command buffer start with some flag in the lower bits */
840 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2098, 0x00000002);
841 	GFFB_WRITE_4(GFFB_PRAMIN + 0x209c, 0x00000002);
842 #if BYTE_ORDER == BIG_ENDIAN
843 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2010, 0x01088042);
844 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2020, 0x01088043);
845 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2030, 0x01088044);
846 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2040, 0x01088019);
847 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2050, 0x0108a05c);
848 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2060, 0x0108809f);
849 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2070, 0x0108804a);
850 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2080, 0x01098077);
851 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2034, 0x00000001);
852 	GFFB_WRITE_4(GFFB_PRAMIN + 0x2074, 0x00000001);
853 #endif
854 
855 	/* PGRAPH setup */
856 	GFFB_WRITE_4(GFFB_PFIFO + 0x0500, 0);
857 	GFFB_WRITE_4(GFFB_PFIFO + 0x0504, 0x00000001);
858 	GFFB_WRITE_4(GFFB_PFIFO + 0x1200, 0);
859 	GFFB_WRITE_4(GFFB_PFIFO + 0x1250, 0);
860 	GFFB_WRITE_4(GFFB_PFIFO + 0x1204, 0x00000100);	/* different on nv40 */
861 	GFFB_WRITE_4(GFFB_PFIFO + 0x1240, 0);
862 	GFFB_WRITE_4(GFFB_PFIFO + 0x1244, 0);
863 	GFFB_WRITE_4(GFFB_PFIFO + 0x122c, 0x00001209);	/* different on nv40 */
864 	GFFB_WRITE_4(GFFB_PFIFO + 0x1000, 0);
865 	GFFB_WRITE_4(GFFB_PFIFO + 0x1050, 0);
866 	GFFB_WRITE_4(GFFB_PFIFO + 0x0210, 0x03000100);
867 	GFFB_WRITE_4(GFFB_PFIFO + 0x0214, 0x00000110);
868 	GFFB_WRITE_4(GFFB_PFIFO + 0x0218, 0x00000112);
869 	GFFB_WRITE_4(GFFB_PFIFO + 0x050c, 0x0000ffff);
870 	GFFB_WRITE_4(GFFB_PFIFO + 0x1258, 0x0000ffff);
871 	GFFB_WRITE_4(GFFB_PFIFO + 0x0140, 0);
872 	GFFB_WRITE_4(GFFB_PFIFO + 0x0100, 0xffffffff);
873 	GFFB_WRITE_4(GFFB_PFIFO + 0x1054, 0x00000001);
874 	GFFB_WRITE_4(GFFB_PFIFO + 0x1230, 0);
875 	GFFB_WRITE_4(GFFB_PFIFO + 0x1280, 0);
876 #if BYTE_ORDER == BIG_ENDIAN
877 	GFFB_WRITE_4(GFFB_PFIFO + 0x1224, 0x800f0078);
878 #else
879 	GFFB_WRITE_4(GFFB_PFIFO + 0x1224, 0x000f0078);
880 #endif
881 	GFFB_WRITE_4(GFFB_PFIFO + 0x1220, 0x00000001);
882 	GFFB_WRITE_4(GFFB_PFIFO + 0x1200, 0x00000001);
883 	GFFB_WRITE_4(GFFB_PFIFO + 0x1250, 0x00000001);
884 	GFFB_WRITE_4(GFFB_PFIFO + 0x1254, 0x00000001);
885 	GFFB_WRITE_4(GFFB_PFIFO + 0x0500, 0x00000001);
886 
887 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0080, 0xFFFFFFFF);
888 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0080, 0x00000000);
889 
890 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0140, 0x00000000);
891 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0100, 0xFFFFFFFF);
892 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0144, 0x10010100);
893 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0714, 0xFFFFFFFF);
894 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0720, 0x00000001);
895 	/*
896 	 * xf86_video_nv does this in two writes,
897 	 * not sure if they can be combined
898 	 */
899 	foo = GFFB_READ_4(GFFB_PGRAPH + 0x0710);
900 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0710, foo & 0x0007ff00);
901 	foo = GFFB_READ_4(GFFB_PGRAPH + 0x0710);
902 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0710, foo | 0x00020100);
903 
904 	/* NV_ARCH_10 */
905 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0084, 0x00118700);
906 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0088, 0x24E00810);
907 	GFFB_WRITE_4(GFFB_PGRAPH + 0x008C, 0x55DE0030);
908 
909 	for(i = 0; i < 128; i += 4) {
910 		GFFB_WRITE_4(GFFB_PGRAPH + 0x0B00 + i,
911 		    GFFB_READ_4(GFFB_PFB + 0x0240 + i));
912 	}
913 
914 	GFFB_WRITE_4(GFFB_PGRAPH + 0x640, 0);
915 	GFFB_WRITE_4(GFFB_PGRAPH + 0x644, 0);
916 	GFFB_WRITE_4(GFFB_PGRAPH + 0x684, sc->sc_vramsize - 1);
917 	GFFB_WRITE_4(GFFB_PGRAPH + 0x688, sc->sc_vramsize - 1);
918 
919 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0810, 0x00000000);
920 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0608, 0xFFFFFFFF);
921 
922 	GFFB_WRITE_4(GFFB_PGRAPH + 0x053C, 0);
923 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0540, 0);
924 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0544, 0x00007FFF);
925 	GFFB_WRITE_4(GFFB_PGRAPH + 0x0548, 0x00007FFF);
926 
927 	GFFB_WRITE_4(GFFB_CMDSTART, 0x00000002);
928 	GFFB_WRITE_4(GFFB_FIFO_GET, 0);
929 	sc->sc_put = 0;
930 	sc->sc_current = 0;
931 	sc->sc_free = 0x2000;
932 
933 	for(i = 0; i < SKIPS; i++)
934 		gffb_dmanext(sc, 0);
935 
936 	gffb_dmanext(sc, 0x00040000);
937 	gffb_dmanext(sc, 0x80000010);
938 	gffb_dmanext(sc, 0x00042000);
939 	gffb_dmanext(sc, 0x80000011);
940 	gffb_dmanext(sc, 0x00044000);
941 	gffb_dmanext(sc, 0x80000012);
942 	gffb_dmanext(sc, 0x00046000);
943 	gffb_dmanext(sc, 0x80000013);
944 	gffb_dmanext(sc, 0x00048000);
945 	gffb_dmanext(sc, 0x80000014);
946 	gffb_dmanext(sc, 0x0004A000);
947 	gffb_dmanext(sc, 0x80000015);
948 	gffb_dmanext(sc, 0x0004C000);
949 	gffb_dmanext(sc, 0x80000016);
950 	gffb_dmanext(sc, 0x0004E000);
951 	gffb_dmanext(sc, 0x80000017);
952 	sc->sc_free = 0x2000 - sc->sc_current;
953 
954 	gffb_dmastart(sc, SURFACE_FORMAT, 4);
955 	gffb_dmanext(sc, SURFACE_FORMAT_DEPTH8);
956 	gffb_dmanext(sc, sc->sc_stride | (sc->sc_stride << 16));
957 	gffb_dmanext(sc, 0x2000);	/* src offset */
958 	gffb_dmanext(sc, 0x2000);	/* dst offset */
959 
960 	gffb_dmastart(sc, RECT_FORMAT, 1);
961 	gffb_dmanext(sc, RECT_FORMAT_DEPTH8);
962 
963 	gffb_dmastart(sc, PATTERN_FORMAT, 1);
964 	gffb_dmanext(sc, PATTERN_FORMAT_DEPTH8);
965 
966 	gffb_dmastart(sc, PATTERN_COLOR_0, 4);
967 	gffb_dmanext(sc, 0xffffffff);
968 	gffb_dmanext(sc, 0xffffffff);
969 	gffb_dmanext(sc, 0xffffffff);
970 	gffb_dmanext(sc, 0xffffffff);
971 
972 	gffb_dmastart(sc, ROP_SET, 1);
973 	gffb_dmanext(sc, 0xcc);
974 	sc->sc_rop = 0xcc;
975 
976 	gffb_dma_kickoff(sc);
977 	gffb_sync(sc);
978 	DPRINTF("put %x current %x\n", sc->sc_put, sc->sc_current);
979 
980 }
981 
982 static void
983 gffb_rop(struct gffb_softc *sc, int rop)
984 {
985 	if (rop == sc->sc_rop)
986 		return;
987 	sc->sc_rop = rop;
988 	gffb_dmastart(sc, ROP_SET, 1);
989 	gffb_dmanext(sc, rop);
990 }
991 
992 static void
993 gffb_rectfill(struct gffb_softc *sc, int x, int y, int wi, int he,
994      uint32_t colour)
995 {
996 	mutex_enter(&sc->sc_lock);
997 	gffb_rop(sc, 0xcc);
998 
999 	gffb_dmastart(sc, RECT_SOLID_COLOR, 1);
1000 	gffb_dmanext(sc, colour);
1001 
1002 	gffb_dmastart(sc, RECT_SOLID_RECTS(0), 2);
1003 	gffb_dmanext(sc, (x << 16) | y);
1004 	gffb_dmanext(sc, (wi << 16) | he);
1005 	gffb_dma_kickoff(sc);
1006 	mutex_exit(&sc->sc_lock);
1007 }
1008 
1009 static void
1010 gffb_bitblt(void *cookie, int xs, int ys, int xd, int yd,
1011     int wi, int he, int rop)
1012 {
1013 	struct gffb_softc *sc = cookie;
1014 
1015 	mutex_enter(&sc->sc_lock);
1016 
1017 	gffb_rop(sc, rop);
1018 
1019 	gffb_dmastart(sc, BLIT_POINT_SRC, 3);
1020 	gffb_dmanext(sc, (ys << 16) | xs);
1021 	gffb_dmanext(sc, (yd << 16) | xd);
1022 	gffb_dmanext(sc, (he << 16) | wi);
1023 	gffb_dma_kickoff(sc);
1024 	mutex_exit(&sc->sc_lock);
1025 }
1026 
1027 static void
1028 gffb_cursor(void *cookie, int on, int row, int col)
1029 {
1030 	struct rasops_info *ri = cookie;
1031 	struct vcons_screen *scr = ri->ri_hw;
1032 	struct gffb_softc *sc = scr->scr_cookie;
1033 	int x, y, wi, he;
1034 
1035 	wi = ri->ri_font->fontwidth;
1036 	he = ri->ri_font->fontheight;
1037 
1038 	if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) {
1039 		x = ri->ri_ccol * wi + ri->ri_xorigin;
1040 		y = ri->ri_crow * he + ri->ri_yorigin;
1041 		if (ri->ri_flg & RI_CURSOR) {
1042 			gffb_bitblt(sc, x, y, x, y, wi, he, 0x33);
1043 			ri->ri_flg &= ~RI_CURSOR;
1044 		}
1045 		ri->ri_crow = row;
1046 		ri->ri_ccol = col;
1047 		if (on) {
1048 			x = ri->ri_ccol * wi + ri->ri_xorigin;
1049 			y = ri->ri_crow * he + ri->ri_yorigin;
1050 			gffb_bitblt(sc, x, y, x, y, wi, he, 0x33);
1051 			ri->ri_flg |= RI_CURSOR;
1052 		}
1053 	} else {
1054 		scr->scr_ri.ri_crow = row;
1055 		scr->scr_ri.ri_ccol = col;
1056 		scr->scr_ri.ri_flg &= ~RI_CURSOR;
1057 	}
1058 
1059 }
1060 
1061 static void
1062 gffb_putchar(void *cookie, int row, int col, u_int c, long attr)
1063 {
1064 	struct rasops_info *ri = cookie;
1065 	struct wsdisplay_font *font = PICK_FONT(ri, c);
1066 	struct vcons_screen *scr = ri->ri_hw;
1067 	struct gffb_softc *sc = scr->scr_cookie;
1068 	int x, y, wi, he, rv = GC_NOPE;
1069 	uint32_t bg;
1070 
1071 	if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL)
1072 		return;
1073 
1074 	if (!CHAR_IN_FONT(c, font))
1075 		return;
1076 
1077 	wi = font->fontwidth;
1078 	he = font->fontheight;
1079 
1080 	x = ri->ri_xorigin + col * wi;
1081 	y = ri->ri_yorigin + row * he;
1082 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
1083 
1084 	if (c == 0x20) {
1085 		gffb_rectfill(sc, x, y, wi, he, bg);
1086 		return;
1087 	}
1088 	rv = glyphcache_try(&sc->sc_gc, c, x, y, attr);
1089 	if (rv == GC_OK)
1090 		return;
1091 
1092 	mutex_enter(&sc->sc_lock);
1093 	gffb_sync(sc);
1094 	sc->sc_putchar(cookie, row, col, c, attr);
1095 	membar_sync();
1096 	mutex_exit(&sc->sc_lock);
1097 
1098 	if (rv == GC_ADD) {
1099 		glyphcache_add(&sc->sc_gc, c, x, y);
1100 	}
1101 }
1102 
1103 static void
1104 gffb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
1105 {
1106 	struct rasops_info *ri = cookie;
1107 	struct vcons_screen *scr = ri->ri_hw;
1108 	struct gffb_softc *sc = scr->scr_cookie;
1109 	int32_t xs, xd, y, width, height;
1110 
1111 	if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) {
1112 		xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol;
1113 		xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol;
1114 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
1115 		width = ri->ri_font->fontwidth * ncols;
1116 		height = ri->ri_font->fontheight;
1117 		gffb_bitblt(sc, xs, y, xd, y, width, height, 0xcc);
1118 	}
1119 }
1120 
1121 static void
1122 gffb_erasecols(void *cookie, int row, int startcol, int ncols, long fillattr)
1123 {
1124 	struct rasops_info *ri = cookie;
1125 	struct vcons_screen *scr = ri->ri_hw;
1126 	struct gffb_softc *sc = scr->scr_cookie;
1127 	int32_t x, y, width, height, fg, bg, ul;
1128 
1129 	if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) {
1130 		x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol;
1131 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
1132 		width = ri->ri_font->fontwidth * ncols;
1133 		height = ri->ri_font->fontheight;
1134 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
1135 
1136 		gffb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]);
1137 	}
1138 }
1139 
1140 static void
1141 gffb_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
1142 {
1143 	struct rasops_info *ri = cookie;
1144 	struct vcons_screen *scr = ri->ri_hw;
1145 	struct gffb_softc *sc = scr->scr_cookie;
1146 	int32_t x, ys, yd, width, height;
1147 
1148 	if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) {
1149 		x = ri->ri_xorigin;
1150 		ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow;
1151 		yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow;
1152 		width = ri->ri_emuwidth;
1153 		height = ri->ri_font->fontheight * nrows;
1154 		gffb_bitblt(sc, x, ys, x, yd, width, height, 0xcc);
1155 	}
1156 }
1157 
1158 static void
1159 gffb_eraserows(void *cookie, int row, int nrows, long fillattr)
1160 {
1161 	struct rasops_info *ri = cookie;
1162 	struct vcons_screen *scr = ri->ri_hw;
1163 	struct gffb_softc *sc = scr->scr_cookie;
1164 	int32_t x, y, width, height, fg, bg, ul;
1165 
1166 	if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) {
1167 		x = ri->ri_xorigin;
1168 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
1169 		width = ri->ri_emuwidth;
1170 		height = ri->ri_font->fontheight * nrows;
1171 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
1172 
1173 		gffb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]);
1174 	}
1175 }
1176