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summitfb.c revision 1.22
      1 /*	$NetBSD: summitfb.c,v 1.22 2024/12/27 13:46:12 skrll Exp $	*/
      2 
      3 /*	$OpenBSD: sti_pci.c,v 1.7 2009/02/06 22:51:04 miod Exp $	*/
      4 
      5 /*
      6  * Copyright (c) 2006, 2007 Miodrag Vallat.
      7  ^                     2024 Michael Lorenz
      8  *
      9  * Permission to use, copy, modify, and distribute this software for any
     10  * purpose with or without fee is hereby granted, provided that the above
     11  * copyright notice, this permission notice, and the disclaimer below
     12  * appear in all copies.
     13  *
     14  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     15  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     16  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     17  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     18  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     19  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     20  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     21  */
     22 
     23 /*
     24  * a native driver for HP Visualize FX graphics cards, so far tested only on
     25  * my FX4
     26  * STI portions are from Miodrag Vallat's sti_pci.c
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __KERNEL_RCSID(0, "$NetBSD: summitfb.c,v 1.22 2024/12/27 13:46:12 skrll Exp $");
     31 
     32 #include <sys/param.h>
     33 #include <sys/systm.h>
     34 #include <sys/kmem.h>
     35 #include <sys/device.h>
     36 #include <sys/mutex.h>
     37 
     38 #include <dev/pci/pcivar.h>
     39 #include <dev/pci/pcireg.h>
     40 #include <dev/pci/pcidevs.h>
     41 #include <dev/pci/pciio.h>
     42 
     43 #include <dev/wscons/wsdisplayvar.h>
     44 #include <dev/wscons/wsconsio.h>
     45 #include <dev/wsfont/wsfont.h>
     46 #include <dev/rasops/rasops.h>
     47 #include <dev/wscons/wsdisplay_vconsvar.h>
     48 #include <dev/pci/wsdisplay_pci.h>
     49 #include <dev/wscons/wsdisplay_glyphcachevar.h>
     50 
     51 #include <dev/ic/stireg.h>
     52 #include <dev/ic/summitreg.h>
     53 #include <dev/ic/stivar.h>
     54 
     55 #include "opt_summitfb.h"
     56 
     57 #define SUMMITFB_DEBUG
     58 #ifdef SUMMITFB_DEBUG
     59 #define	DPRINTF(s) printf s
     60 #else
     61 #define	DPRINTF(s) __nothing
     62 #endif
     63 
     64 //#define SUMMITFB_ENABLE_GC
     65 
     66 int	summitfb_match(device_t, cfdata_t, void *);
     67 void	summitfb_attach(device_t, device_t, void *);
     68 
     69 struct	summitfb_softc {
     70 	device_t		sc_dev;
     71 	pci_chipset_tag_t	sc_pc;
     72 	pcitag_t		sc_tag;
     73 
     74 	/* stuff we need in order to use the STI ROM */
     75 	struct sti_softc	sc_base;
     76 	struct sti_screen 	sc_scr;
     77 	bus_space_handle_t	sc_romh;
     78 
     79 	int sc_width, sc_height;
     80 	int sc_locked;
     81 	struct vcons_screen sc_console_screen;
     82 	struct wsscreen_descr sc_defaultscreen_descr;
     83 	const struct wsscreen_descr *sc_screens[1];
     84 	struct wsscreen_list sc_screenlist;
     85 	struct vcons_data vd;
     86 	int sc_mode;
     87 	u_char sc_cmap_red[256];
     88 	u_char sc_cmap_green[256];
     89 	u_char sc_cmap_blue[256];
     90 	uint32_t sc_write_mode;
     91 	/* cursor stuff */
     92 	int sc_cursor_x, sc_cursor_y;
     93 	int sc_hot_x, sc_hot_y, sc_enabled;
     94 	/* font-in-vram */
     95 	struct wsdisplay_font *sc_font;
     96 	int sc_font_start;	/* x of font area */
     97 	int sc_cols;		/* chars per line in font area */
     98 
     99 	int sc_video_on;
    100 #ifdef SUMMITFB_ENABLE_GC
    101 	void (*sc_putchar)(void *, int, int, u_int, long);
    102 	glyphcache sc_gc;
    103 #endif
    104 };
    105 
    106 CFATTACH_DECL_NEW(summitfb, sizeof(struct summitfb_softc),
    107     summitfb_match, summitfb_attach, NULL, NULL);
    108 
    109 int	summitfb_readbar(struct sti_softc *, struct pci_attach_args *, u_int,
    110 	    int);
    111 int	summitfb_check_rom(struct summitfb_softc *, struct pci_attach_args *);
    112 void	summitfb_enable_rom(struct sti_softc *);
    113 void	summitfb_disable_rom(struct sti_softc *);
    114 void	summitfb_enable_rom_internal(struct summitfb_softc *);
    115 void	summitfb_disable_rom_internal(struct summitfb_softc *);
    116 
    117 void 	summitfb_setup(struct summitfb_softc *);
    118 
    119 /* XXX these really need to go into their own header */
    120 int	sti_pci_is_console(struct pci_attach_args *, bus_addr_t *);
    121 int	sti_rom_setup(struct sti_rom *, bus_space_tag_t, bus_space_tag_t,
    122 	    bus_space_handle_t, bus_addr_t *, u_int);
    123 int	sti_screen_setup(struct sti_screen *, int);
    124 void	sti_describe_screen(struct sti_softc *, struct sti_screen *);
    125 
    126 #define PCI_ROM_SIZE(mr)						      \
    127 	(PCI_MAPREG_ROM_ADDR(mr) & -PCI_MAPREG_ROM_ADDR(mr))
    128 
    129 /* wsdisplay stuff */
    130 static int	summitfb_ioctl(void *, void *, u_long, void *, int,
    131 		    struct lwp *);
    132 static paddr_t	summitfb_mmap(void *, void *, off_t, int);
    133 static void	summitfb_init_screen(void *, struct vcons_screen *, int,
    134 		    long *);
    135 
    136 static int	summitfb_putcmap(struct summitfb_softc *,
    137 		    struct wsdisplay_cmap *);
    138 static int 	summitfb_getcmap(struct summitfb_softc *,
    139 		    struct wsdisplay_cmap *);
    140 static void	summitfb_restore_palette(struct summitfb_softc *);
    141 static int 	summitfb_putpalreg(struct summitfb_softc *, uint8_t, uint8_t,
    142 		    uint8_t, uint8_t);
    143 
    144 static inline void summitfb_setup_fb(struct summitfb_softc *);
    145 
    146 static void	summitfb_rectfill(struct summitfb_softc *, int, int, int, int,
    147 		    uint32_t);
    148 static void	summitfb_bitblt(void *, int, int, int, int, int,
    149 		    int, int);
    150 
    151 static void	summitfb_cursor(void *, int, int, int);
    152 static void	summitfb_putchar(void *, int, int, u_int, long);
    153 static void	summitfb_putchar_fast(void *, int, int, u_int, long);
    154 static void	summitfb_loadfont(struct summitfb_softc *);
    155 #ifdef SUMMITFB_ENABLE_GC
    156 static void	summitfb_putchar_aa(void *, int, int, u_int, long);
    157 #endif
    158 static void	summitfb_copycols(void *, int, int, int, int);
    159 static void	summitfb_erasecols(void *, int, int, int, long);
    160 static void	summitfb_copyrows(void *, int, int, int);
    161 static void	summitfb_eraserows(void *, int, int, long);
    162 
    163 static void	summitfb_move_cursor(struct summitfb_softc *, int, int);
    164 static int	summitfb_do_cursor(struct summitfb_softc *,
    165 		    struct wsdisplay_cursor *);
    166 
    167 static void	summitfb_set_video(struct summitfb_softc *, int);
    168 
    169 static void	summitfb_copyfont(struct summitfb_softc *);
    170 
    171 struct wsdisplay_accessops summitfb_accessops = {
    172 	.ioctl = summitfb_ioctl,
    173 	.mmap = summitfb_mmap,
    174 	.alloc_screen = NULL,
    175 	.free_screen = NULL,
    176 	.show_screen = NULL,
    177 	.load_font = NULL,
    178 	.pollc = NULL,
    179 	.scroll = NULL,
    180 };
    181 
    182 static inline void summitfb_wait_fifo(struct summitfb_softc *, uint32_t);
    183 static inline void summitfb_wait(struct summitfb_softc *);
    184 
    185 int	sti_fetchfonts(struct sti_screen *, struct sti_inqconfout *, uint32_t,
    186 	    u_int);
    187 
    188 int
    189 summitfb_match(device_t parent, cfdata_t cf, void *aux)
    190 {
    191 	struct pci_attach_args *paa = aux;
    192 
    193 	if (PCI_VENDOR(paa->pa_id) != PCI_VENDOR_HP)
    194 		return 0;
    195 
    196 	if (PCI_PRODUCT(paa->pa_id) == PCI_PRODUCT_HP_VISUALIZE_FX4)
    197 		return 10;	/* beat out sti at pci */
    198 
    199 	return 0;
    200 }
    201 
    202 static inline uint32_t
    203 summitfb_read4(struct summitfb_softc *sc, uint32_t offset)
    204 {
    205 	struct sti_rom *rom = sc->sc_base.sc_rom;
    206 	bus_space_tag_t memt = rom->memt;
    207 	bus_space_handle_t memh = rom->regh[2];
    208 
    209 	return bus_space_read_stream_4(memt, memh, offset - 0x400000);
    210 }
    211 
    212 static inline void
    213 summitfb_write4(struct summitfb_softc *sc, uint32_t offset, uint32_t val)
    214 {
    215 	struct sti_rom *rom = sc->sc_base.sc_rom;
    216 	bus_space_tag_t memt = rom->memt;
    217 	bus_space_handle_t memh = rom->regh[2];
    218 
    219 	bus_space_write_stream_4(memt, memh, offset - 0x400000, val);
    220 }
    221 
    222 void
    223 summitfb_attach(device_t parent, device_t self, void *aux)
    224 {
    225 	struct summitfb_softc *sc = device_private(self);
    226 	struct pci_attach_args *paa = aux;
    227 	struct sti_rom *rom;
    228 	struct rasops_info *ri;
    229 	struct wsemuldisplaydev_attach_args aa;
    230 	unsigned long defattr = 0;
    231 	int ret, is_console = 0;
    232 
    233 	sc->sc_dev = self;
    234 
    235 	sc->sc_pc = paa->pa_pc;
    236 	sc->sc_tag = paa->pa_tag;
    237 	sc->sc_base.sc_dev = self;
    238 	sc->sc_base.sc_enable_rom = summitfb_enable_rom;
    239 	sc->sc_base.sc_disable_rom = summitfb_disable_rom;
    240 
    241 	aprint_normal("\n");
    242 
    243 	if (summitfb_check_rom(sc, paa) != 0)
    244 		return;
    245 
    246 	ret = sti_pci_is_console(paa, sc->sc_base. bases);
    247 	if (ret != 0) {
    248 		sc->sc_base.sc_flags |= STI_CONSOLE;
    249 		is_console = 1;
    250 	}
    251 	rom = kmem_zalloc(sizeof(*rom), KM_SLEEP);
    252 	rom->rom_softc = &sc->sc_base;
    253 	ret = sti_rom_setup(rom, paa->pa_iot, paa->pa_memt, sc->sc_romh,
    254 	    sc->sc_base.bases, STI_CODEBASE_MAIN);
    255 	if (ret != 0) {
    256 		kmem_free(rom, sizeof(*rom));
    257 		return;
    258 	}
    259 
    260 	sc->sc_base.sc_rom = rom;
    261 
    262 	sc->sc_scr.scr_rom = sc->sc_base.sc_rom;
    263 	ret = sti_screen_setup(&sc->sc_scr, STI_FBMODE);
    264 
    265 	struct sti_dd *dd = &rom->rom_dd;
    266 	sti_fetchfonts(&sc->sc_scr, NULL, dd->dd_fntaddr, 0);
    267 	summitfb_copyfont(sc);
    268 
    269 	sc->sc_width = sc->sc_scr.scr_cfg.scr_width;
    270 	sc->sc_height = sc->sc_scr.scr_cfg.scr_height;
    271 	sc->sc_write_mode = 0xffffffff;
    272 
    273 #ifdef SUMMITFB_DEBUG
    274 	sc->sc_height -= 200;
    275 	sc->sc_width -= 200;
    276 #endif
    277 
    278 	sc->sc_defaultscreen_descr = (struct wsscreen_descr){
    279 		.name = "default",
    280 		.ncols = 0, .nrows = 0,
    281 		.textops = NULL,
    282 		.fontwidth = 8, .fontheight = 16,
    283 		.capabilities = WSSCREEN_WSCOLORS | WSSCREEN_HILIT |
    284 		    WSSCREEN_UNDERLINE | WSSCREEN_RESIZE,
    285 		.modecookie = NULL,
    286 	};
    287 
    288 	sc->sc_screens[0] = &sc->sc_defaultscreen_descr;
    289 	sc->sc_screenlist = (struct wsscreen_list){1, sc->sc_screens};
    290 	sc->sc_mode = WSDISPLAYIO_MODE_EMUL;
    291 	sc->sc_locked = 0;
    292 
    293 	vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr,
    294 	    &summitfb_accessops);
    295 	sc->vd.init_screen = summitfb_init_screen;
    296 #ifdef SUMMITFB_ENABLE_GC
    297 	sc->vd.show_screen_cookie = &sc->sc_gc;
    298 	sc->vd.show_screen_cb = glyphcache_adapt;
    299 #endif
    300 	ri = &sc->sc_console_screen.scr_ri;
    301 
    302 #ifdef SUMMITFB_ENABLE_GC
    303 	sc->sc_gc.gc_bitblt = summitfb_bitblt;
    304 	sc->sc_gc.gc_blitcookie = sc;
    305 	sc->sc_gc.gc_rop = RopSrc;
    306 #endif
    307 
    308 	summitfb_setup(sc);
    309 	summitfb_setup_fb(sc);
    310 
    311 	vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, &defattr);
    312 	sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC;
    313 
    314 	sc->sc_defaultscreen_descr.textops = &ri->ri_ops;
    315 	sc->sc_defaultscreen_descr.capabilities = ri->ri_caps;
    316 	sc->sc_defaultscreen_descr.nrows = ri->ri_rows;
    317 	sc->sc_defaultscreen_descr.ncols = ri->ri_cols;
    318 
    319 	/*
    320 	 * STI lies to us - it reports a 2048x2048 framebuffer but blitter
    321 	 * ops wrap around below 1024 and we seem to have only about 250
    322 	 * usable columns to the right. Should still be enough to cache
    323 	 * a font or four.
    324 	 * So, the framebuffer seems to be 1536x1024, which is odd since the
    325 	 * FX4 is supposed to support resolutions higher than 1280x1024.
    326 	 * I guess video memory is allocated in 512x512 chunks
    327 	 */
    328 #ifdef SUMMITFB_ENABLE_GC
    329 	glyphcache_init_x(&sc->sc_gc, sc->sc_width, 0,
    330 	    sc->sc_height,
    331 	    1536 - sc->sc_width - 4,
    332 	    ri->ri_font->fontwidth,
    333 	    ri->ri_font->fontheight,
    334 	    defattr);
    335 #endif
    336 
    337 	summitfb_setup(sc);
    338 	summitfb_restore_palette(sc);
    339 	summitfb_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height,
    340 	    ri->ri_devcmap[(defattr >> 16) & 0xff]);
    341 	summitfb_setup_fb(sc);
    342 
    343 	if (is_console) {
    344 		wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, 0,
    345 		    defattr);
    346 
    347 		vcons_replay_msgbuf(&sc->sc_console_screen);
    348 	}
    349 
    350 	aprint_normal_dev(sc->sc_dev, "%s at %dx%d\n", sc->sc_scr.name,
    351 	    sc->sc_width, sc->sc_height);
    352 
    353 	/* no suspend/resume support yet */
    354 	pmf_device_register(sc->sc_dev, NULL, NULL);
    355 
    356 	aa.console = is_console;
    357 	aa.scrdata = &sc->sc_screenlist;
    358 	aa.accessops = &summitfb_accessops;
    359 	aa.accesscookie = &sc->vd;
    360 
    361 	config_found(sc->sc_dev, &aa, wsemuldisplaydevprint, CFARGS_NONE);
    362 }
    363 
    364 /*
    365  * Grovel the STI ROM image.
    366  */
    367 int
    368 summitfb_check_rom(struct summitfb_softc *spc, struct pci_attach_args *pa)
    369 {
    370 	struct sti_softc *sc = &spc->sc_base;
    371 	pcireg_t address, mask;
    372 	bus_space_handle_t romh;
    373 	bus_size_t romsize, subsize, stiromsize;
    374 	bus_addr_t selected, offs, suboffs;
    375 	uint32_t tmp;
    376 	int i;
    377 	int rc;
    378 
    379 	/* sort of inline sti_pci_enable_rom(sc) */
    380 	address = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM);
    381 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM,
    382 	    ~PCI_MAPREG_ROM_ENABLE);
    383 	mask = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM);
    384 	address |= PCI_MAPREG_ROM_ENABLE;
    385 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM, address);
    386 	sc->sc_flags |= STI_ROM_ENABLED;
    387 
    388 	/*
    389 	 * Map the complete ROM for now.
    390 	 */
    391 	romsize = PCI_ROM_SIZE(mask);
    392 	DPRINTF(("%s: mapping rom @ %lx for %lx\n", __func__,
    393 	    (long)PCI_MAPREG_ROM_ADDR(address), (long)romsize));
    394 
    395 	rc = bus_space_map(pa->pa_memt, PCI_MAPREG_ROM_ADDR(address), romsize,
    396 	    0, &romh);
    397 	if (rc != 0) {
    398 		aprint_error_dev(sc->sc_dev, "can't map PCI ROM (%d)\n", rc);
    399 		goto fail2;
    400 	}
    401 
    402 	summitfb_disable_rom_internal(spc);
    403 
    404 	/*
    405 	 * Iterate over the ROM images, pick the best candidate.
    406 	 */
    407 	selected = (bus_addr_t)-1;
    408 	for (offs = 0; offs < romsize; offs += subsize) {
    409 		summitfb_enable_rom_internal(spc);
    410 		/*
    411 		 * Check for a valid ROM header.
    412 		 */
    413 		tmp = bus_space_read_4(pa->pa_memt, romh, offs + 0);
    414 		tmp = le32toh(tmp);
    415 		if (tmp != 0x55aa0000) {
    416 			summitfb_disable_rom_internal(spc);
    417 			if (offs == 0) {
    418 				aprint_error_dev(sc->sc_dev,
    419 				    "invalid PCI ROM header signature"
    420 				    " (%08x)\n", tmp);
    421 				rc = EINVAL;
    422 			}
    423 			break;
    424 		}
    425 
    426 		/*
    427 		 * Check ROM type.
    428 		 */
    429 		tmp = bus_space_read_4(pa->pa_memt, romh, offs + 4);
    430 		tmp = le32toh(tmp);
    431 		if (tmp != 0x00000001) {	/* 1 == STI ROM */
    432 			summitfb_disable_rom_internal(spc);
    433 			if (offs == 0) {
    434 				aprint_error_dev(sc->sc_dev,
    435 				    "invalid PCI ROM type (%08x)\n", tmp);
    436 				rc = EINVAL;
    437 			}
    438 			break;
    439 		}
    440 
    441 		subsize = (bus_addr_t)bus_space_read_2(pa->pa_memt, romh,
    442 		    offs + 0x0c);
    443 		subsize <<= 9;
    444 
    445 #ifdef SUMMITFB_DEBUG
    446 		summitfb_disable_rom_internal(spc);
    447 		DPRINTF(("ROM offset %08x size %08x type %08x",
    448 		    (u_int)offs, (u_int)subsize, tmp));
    449 		summitfb_enable_rom_internal(spc);
    450 #endif
    451 
    452 		/*
    453 		 * Check for a valid ROM data structure.
    454 		 * We do not need it except to know what architecture the ROM
    455 		 * code is for.
    456 		 */
    457 
    458 		suboffs = offs + bus_space_read_2(pa->pa_memt, romh,
    459 		    offs + 0x18);
    460 		tmp = bus_space_read_4(pa->pa_memt, romh, suboffs + 0);
    461 		tmp = le32toh(tmp);
    462 		if (tmp != 0x50434952) {	/* PCIR */
    463 			summitfb_disable_rom_internal(spc);
    464 			if (offs == 0) {
    465 				aprint_error_dev(sc->sc_dev, "invalid PCI data"
    466 				    " signature (%08x)\n", tmp);
    467 				rc = EINVAL;
    468 			} else {
    469 				DPRINTF((" invalid PCI data signature %08x\n",
    470 				    tmp));
    471 				continue;
    472 			}
    473 		}
    474 
    475 		tmp = bus_space_read_1(pa->pa_memt, romh, suboffs + 0x14);
    476 		summitfb_disable_rom_internal(spc);
    477 		DPRINTF((" code %02x", tmp));
    478 
    479 		switch (tmp) {
    480 #ifdef __hppa__
    481 		case 0x10:
    482 			if (selected == (bus_addr_t)-1)
    483 				selected = offs;
    484 			break;
    485 #endif
    486 #ifdef __i386__
    487 		case 0x00:
    488 			if (selected == (bus_addr_t)-1)
    489 				selected = offs;
    490 			break;
    491 #endif
    492 		default:
    493 			DPRINTF((" (wrong architecture)"));
    494 			break;
    495 		}
    496 		DPRINTF(("%s\n", selected == offs ? " -> SELECTED" : ""));
    497 	}
    498 
    499 	if (selected == (bus_addr_t)-1) {
    500 		if (rc == 0) {
    501 			aprint_error_dev(sc->sc_dev, "found no ROM with "
    502 			    "correct microcode architecture\n");
    503 			rc = ENOEXEC;
    504 		}
    505 		goto fail;
    506 	}
    507 
    508 	/*
    509 	 * Read the STI region BAR assignments.
    510 	 */
    511 
    512 	summitfb_enable_rom_internal(spc);
    513 	offs = selected + bus_space_read_2(pa->pa_memt, romh, selected + 0x0e);
    514 	for (i = 0; i < STI_REGION_MAX; i++) {
    515 		rc = summitfb_readbar(sc, pa, i,
    516 		    bus_space_read_1(pa->pa_memt, romh, offs + i));
    517 		if (rc != 0)
    518 			goto fail;
    519 	}
    520 
    521 	/*
    522 	 * Find out where the STI ROM itself lies, and its size.
    523 	 */
    524 
    525 	offs = selected +
    526 	    bus_space_read_4(pa->pa_memt, romh, selected + 0x08);
    527 	stiromsize = bus_space_read_4(pa->pa_memt, romh, offs + 0x18);
    528 	stiromsize = le32toh(stiromsize);
    529 	summitfb_disable_rom_internal(spc);
    530 
    531 	/*
    532 	 * Replace our mapping with a smaller mapping of only the area
    533 	 * we are interested in.
    534 	 */
    535 
    536 	DPRINTF(("remapping rom @ %lx for %lx\n",
    537 	    (long)(PCI_MAPREG_ROM_ADDR(address) + offs), (long)stiromsize));
    538 	bus_space_unmap(pa->pa_memt, romh, romsize);
    539 	rc = bus_space_map(pa->pa_memt, PCI_MAPREG_ROM_ADDR(address) + offs,
    540 	    stiromsize, 0, &spc->sc_romh);
    541 	if (rc != 0) {
    542 		aprint_error_dev(sc->sc_dev, "can't map STI ROM (%d)\n",
    543 		    rc);
    544 		goto fail2;
    545 	}
    546  	summitfb_disable_rom_internal(spc);
    547 	sc->sc_flags &= ~STI_ROM_ENABLED;
    548 
    549 	return 0;
    550 
    551 fail:
    552 	bus_space_unmap(pa->pa_memt, romh, romsize);
    553 fail2:
    554 	summitfb_disable_rom_internal(spc);
    555 
    556 	return rc;
    557 }
    558 
    559 /*
    560  * Decode a BAR register.
    561  */
    562 int
    563 summitfb_readbar(struct sti_softc *sc, struct pci_attach_args *pa,
    564     u_int region, int bar)
    565 {
    566 	bus_addr_t addr;
    567 	bus_size_t size;
    568 	uint32_t cf;
    569 	int rc;
    570 
    571 	if (bar == 0) {
    572 		sc->bases[region] = 0;
    573 		return 0;
    574 	}
    575 
    576 #ifdef DIAGNOSTIC
    577 	if (bar < PCI_MAPREG_START || bar > PCI_MAPREG_PPB_END) {
    578 		summitfb_disable_rom(sc);
    579 		printf("%s: unexpected bar %02x for region %d\n",
    580 		    device_xname(sc->sc_dev), bar, region);
    581 		summitfb_enable_rom(sc);
    582 	}
    583 #endif
    584 
    585 	cf = pci_conf_read(pa->pa_pc, pa->pa_tag, bar);
    586 
    587 	rc = pci_mapreg_info(pa->pa_pc, pa->pa_tag, bar, PCI_MAPREG_TYPE(cf),
    588 	    &addr, &size, NULL);
    589 
    590 	if (rc != 0) {
    591 		summitfb_disable_rom(sc);
    592 		aprint_error_dev(sc->sc_dev, "invalid bar %02x"
    593 		    " for region %d\n",
    594 		    bar, region);
    595 		summitfb_enable_rom(sc);
    596 		return rc;
    597 	}
    598 
    599 	sc->bases[region] = addr;
    600 	return 0;
    601 }
    602 
    603 /*
    604  * Enable PCI ROM.
    605  */
    606 void
    607 summitfb_enable_rom_internal(struct summitfb_softc *spc)
    608 {
    609 	pcireg_t address;
    610 
    611 	KASSERT(spc != NULL);
    612 
    613 	address = pci_conf_read(spc->sc_pc, spc->sc_tag, PCI_MAPREG_ROM);
    614 	address |= PCI_MAPREG_ROM_ENABLE;
    615 	pci_conf_write(spc->sc_pc, spc->sc_tag, PCI_MAPREG_ROM, address);
    616 }
    617 
    618 void
    619 summitfb_enable_rom(struct sti_softc *sc)
    620 {
    621 	struct summitfb_softc *spc = device_private(sc->sc_dev);
    622 
    623 	if (!ISSET(sc->sc_flags, STI_ROM_ENABLED)) {
    624 		summitfb_enable_rom_internal(spc);
    625 	}
    626 	SET(sc->sc_flags, STI_ROM_ENABLED);
    627 }
    628 
    629 /*
    630  * Disable PCI ROM.
    631  */
    632 void
    633 summitfb_disable_rom_internal(struct summitfb_softc *spc)
    634 {
    635 	pcireg_t address;
    636 
    637 	KASSERT(spc != NULL);
    638 
    639 	address = pci_conf_read(spc->sc_pc, spc->sc_tag, PCI_MAPREG_ROM);
    640 	address &= ~PCI_MAPREG_ROM_ENABLE;
    641 	pci_conf_write(spc->sc_pc, spc->sc_tag, PCI_MAPREG_ROM, address);
    642 }
    643 
    644 void
    645 summitfb_disable_rom(struct sti_softc *sc)
    646 {
    647 	struct summitfb_softc *spc = device_private(sc->sc_dev);
    648 
    649 	if (ISSET(sc->sc_flags, STI_ROM_ENABLED)) {
    650 		summitfb_disable_rom_internal(spc);
    651 	}
    652 	CLR(sc->sc_flags, STI_ROM_ENABLED);
    653 }
    654 
    655 static inline void
    656 summitfb_wait(struct summitfb_softc *sc)
    657 {
    658 
    659 	while (summitfb_read4(sc, VISFX_STATUS) != 0)
    660 		continue;
    661 }
    662 
    663 static inline void
    664 summitfb_write_mode(struct summitfb_softc *sc, uint32_t mode)
    665 {
    666 	if (sc->sc_write_mode == mode)
    667 		return;
    668 	summitfb_wait(sc);
    669 	summitfb_write4(sc, VISFX_VRAM_WRITE_MODE, mode);
    670 	summitfb_write4(sc, VISFX_VRAM_READ_MODE,mode & 0x07fff000);
    671 	sc->sc_write_mode = mode;
    672 }
    673 
    674 static inline void
    675 summitfb_setup_fb(struct summitfb_softc *sc)
    676 {
    677 
    678 	summitfb_wait(sc);
    679 	if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) {
    680 		summitfb_write_mode(sc, VISFX_WRITE_MODE_PLAIN);
    681 		summitfb_write4(sc, VISFX_APERTURE_ACCESS, VISFX_DEPTH_8);
    682 		summitfb_write4(sc, VISFX_OTR, OTR_T | OTR_L1 | OTR_L0); // opaque
    683 	} else {
    684 		summitfb_write_mode(sc, OTC01 | BIN8F | BUFFL);
    685 		summitfb_write4(sc, VISFX_APERTURE_ACCESS, VISFX_DEPTH_32);
    686 		summitfb_write4(sc, VISFX_OTR, OTR_A);	// all transparent
    687 	}
    688 	summitfb_write4(sc, VISFX_IBO, RopSrc);
    689 	//summitfb_write4(sc, VISFX_CONTROL, CONTROL_WFC);
    690 }
    691 
    692 void
    693 summitfb_setup(struct summitfb_softc *sc)
    694 {
    695 	int i;
    696 
    697 	sc->sc_hot_x = 0;
    698 	sc->sc_hot_y = 0;
    699 	sc->sc_enabled = 0;
    700 	sc->sc_video_on = 1;
    701 
    702 	summitfb_wait(sc);
    703 #if 1
    704 	summitfb_write4(sc, 0xb08044, 0x1b);
    705 	summitfb_write4(sc, 0xb08048, 0x1b);
    706 
    707 	summitfb_write4(sc, 0x920860, 0xe4);
    708 	summitfb_write4(sc, VISFX_IBO, 0);
    709 	summitfb_write4(sc, 0x921114, 0);
    710 	summitfb_write4(sc, 0x9211d8, 0);
    711 
    712 	summitfb_write4(sc, 0xa00404, 0);
    713 	summitfb_write4(sc, 0xa00818, 0);
    714 	summitfb_write4(sc, 0xa0081c, 0);	/* fx4 */
    715 	summitfb_write4(sc, 0xa00850, 0);	/* fx4 */
    716 	summitfb_write4(sc, 0xa0086c, 0);
    717 #endif
    718 
    719 	/* make sure the overlay is opaque */
    720 	summitfb_write4(sc, VISFX_OTR, OTR_T | OTR_L1 | OTR_L0);
    721 	/*
    722 	 * initialize XLUT
    723 	 * the whole thing so we don't have to clear the attribute plane
    724 	 */
    725 	for (i = 0; i < 16; i++)
    726 		summitfb_write4(sc, VISFX_IAA(i), IAA_8F | IAA_CFS1); /* RGB, CFS1 */
    727 	summitfb_write4(sc, VISFX_CFS(1), CFS_8F | CFS_BYPASS);
    728 	/* overlay is 8bit, uses LUT 0 */
    729 	summitfb_write4(sc, VISFX_CFS(16), CFS_8I | CFS_LUT0);
    730 	summitfb_write4(sc, VISFX_CFS(17), CFS_8I | CFS_LUT0);
    731 
    732 	/* turn off force attr so the above takes effect */
    733 	summitfb_write4(sc, VISFX_FATTR, 0);
    734 
    735 	summitfb_write4(sc, VISFX_TCR, 0x10001000);	/* disable throttling */
    736 
    737 	summitfb_wait(sc);
    738 	summitfb_write4(sc, VISFX_CONTROL, 0);	// clear WFC
    739 	summitfb_write4(sc, VISFX_APERTURE_ACCESS, VISFX_DEPTH_8);
    740 	summitfb_write4(sc, VISFX_PIXEL_MASK, 0xffffffff);
    741 	summitfb_write4(sc, VISFX_PLANE_MASK, 0xffffffff);
    742 	summitfb_write4(sc, VISFX_FOE, FOE_BLEND_ROP);
    743 	summitfb_write4(sc, VISFX_IBO, RopSrc);
    744 	summitfb_write_mode(sc, VISFX_WRITE_MODE_PLAIN);
    745 	summitfb_write4(sc, VISFX_CLIP_TL, 0);
    746 	summitfb_write4(sc, VISFX_CLIP_WH,
    747 	    ((sc->sc_scr.fbwidth) << 16) | (sc->sc_scr.fbheight));
    748 	/* turn off the cursor sprite */
    749 	summitfb_write4(sc, VISFX_CURSOR_POS, 0);
    750 	summitfb_setup_fb(sc);
    751 }
    752 
    753 static int
    754 summitfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
    755     struct lwp *l)
    756 {
    757 	struct vcons_data *vd = v;
    758 	struct summitfb_softc *sc = vd->cookie;
    759 	struct wsdisplay_fbinfo *wdf;
    760 	struct vcons_screen *ms = vd->active;
    761 
    762 	switch (cmd) {
    763 	case WSDISPLAYIO_GTYPE:
    764 		*(u_int *)data = WSDISPLAY_TYPE_STI;
    765 		return 0;
    766 
    767 	case GCID:
    768 		*(u_int *)data = sc->sc_scr.scr_rom->rom_dd.dd_grid[0];
    769 		return 0;
    770 
    771 	/* PCI config read/write passthrough. */
    772 	case PCI_IOC_CFGREAD:
    773 	case PCI_IOC_CFGWRITE:
    774 		return pci_devioctl(sc->sc_pc, sc->sc_tag,
    775 		    cmd, data, flag, l);
    776 
    777 	case WSDISPLAYIO_GET_BUSID:
    778 		return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc,
    779 		    sc->sc_tag, data);
    780 
    781 	case WSDISPLAYIO_GINFO:
    782 		if (ms == NULL)
    783 			return ENODEV;
    784 		wdf = data;
    785 		wdf->height = ms->scr_ri.ri_height;
    786 		wdf->width = ms->scr_ri.ri_width;
    787 		wdf->depth = ms->scr_ri.ri_depth;
    788 		wdf->cmsize = 256;
    789 		return 0;
    790 
    791 	case WSDISPLAYIO_GETCMAP:
    792 		return summitfb_getcmap(sc,
    793 		    (struct wsdisplay_cmap *)data);
    794 
    795 	case WSDISPLAYIO_PUTCMAP:
    796 		return summitfb_putcmap(sc,
    797 		    (struct wsdisplay_cmap *)data);
    798 
    799 	case WSDISPLAYIO_LINEBYTES:
    800 		*(u_int *)data = 2048;
    801 		return 0;
    802 
    803 	case WSDISPLAYIO_SMODE: {
    804 		int new_mode = *(int *)data;
    805 
    806 		if (new_mode != sc->sc_mode) {
    807 			sc->sc_mode = new_mode;
    808 			if(new_mode == WSDISPLAYIO_MODE_EMUL) {
    809 				summitfb_setup(sc);
    810 				summitfb_restore_palette(sc);
    811 #ifdef SUMMITFB_ENABLE_GC
    812 				glyphcache_wipe(&sc->sc_gc);
    813 #endif
    814 				summitfb_loadfont(sc);
    815 				summitfb_rectfill(sc, 0, 0, sc->sc_width,
    816 				    sc->sc_height, ms->scr_ri.ri_devcmap[
    817 				    (ms->scr_defattr >> 16) & 0xff]);
    818 				vcons_redraw_screen(ms);
    819 				summitfb_set_video(sc, 1);
    820 			}
    821 			summitfb_setup_fb(sc);
    822 		}
    823 		return 0;
    824 	}
    825 
    826 	case WSDISPLAYIO_GET_FBINFO: {
    827 		struct wsdisplayio_fbinfo *fbi = data;
    828 		int ret;
    829 
    830 		ret = wsdisplayio_get_fbinfo(&ms->scr_ri, fbi);
    831 		//fbi->fbi_fbsize = sc->sc_height * 2048;
    832 		fbi->fbi_stride = 8192;
    833 		fbi->fbi_bitsperpixel = 32;
    834 		fbi->fbi_pixeltype = WSFB_RGB;
    835 		fbi->fbi_subtype.fbi_rgbmasks.red_offset = 16;
    836 		fbi->fbi_subtype.fbi_rgbmasks.red_size = 8;
    837 		fbi->fbi_subtype.fbi_rgbmasks.green_offset = 8;
    838 		fbi->fbi_subtype.fbi_rgbmasks.green_size = 8;
    839 		fbi->fbi_subtype.fbi_rgbmasks.blue_offset = 0;
    840 		fbi->fbi_subtype.fbi_rgbmasks.blue_size = 8;
    841 		fbi->fbi_subtype.fbi_rgbmasks.alpha_size = 0;
    842 		fbi->fbi_fbsize = sc->sc_scr.fbheight * 8192;
    843 		return ret;
    844 	}
    845 
    846 	case WSDISPLAYIO_GCURPOS: {
    847 		struct wsdisplay_curpos *cp = data;
    848 
    849 		cp->x = sc->sc_cursor_x;
    850 		cp->y = sc->sc_cursor_y;
    851 		return 0;
    852 	}
    853 
    854 	case WSDISPLAYIO_SCURPOS: {
    855 		struct wsdisplay_curpos *cp = data;
    856 
    857 		summitfb_move_cursor(sc, cp->x, cp->y);
    858 		return 0;
    859 	}
    860 
    861 	case WSDISPLAYIO_GCURMAX: {
    862 		struct wsdisplay_curpos *cp = data;
    863 
    864 		cp->x = 64;
    865 		cp->y = 64;
    866 		return 0;
    867 	}
    868 
    869 	case WSDISPLAYIO_SCURSOR: {
    870 		struct wsdisplay_cursor *cursor = data;
    871 
    872 		return summitfb_do_cursor(sc, cursor);
    873 	}
    874 
    875 	case WSDISPLAYIO_SVIDEO:
    876 		summitfb_set_video(sc, *(int *)data);
    877 		return 0;
    878 	case WSDISPLAYIO_GVIDEO:
    879 		*(u_int *)data = sc->sc_video_on ?
    880 		    WSDISPLAYIO_VIDEO_ON : WSDISPLAYIO_VIDEO_OFF;
    881 		return 0;
    882 	}
    883 	return EPASSTHROUGH;
    884 }
    885 
    886 static paddr_t
    887 summitfb_mmap(void *v, void *vs, off_t offset, int prot)
    888 {
    889 	struct vcons_data *vd = v;
    890 	struct summitfb_softc *sc = vd->cookie;
    891 	struct sti_rom *rom = sc->sc_base.sc_rom;
    892 	paddr_t pa = -1;
    893 
    894 	if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)
    895 		return -1;
    896 
    897 	if (offset >= 0 && offset < sc->sc_scr.fblen) {
    898 		/* framebuffer */
    899 		pa = bus_space_mmap(rom->memt, sc->sc_scr.fbaddr, offset,
    900 		    prot, BUS_SPACE_MAP_LINEAR);
    901 	} else if (offset >= 0x80000000 && offset < 0x81000000) {
    902 		/* blitter registers etc. */
    903 		pa = bus_space_mmap(rom->memt, rom->regh[0],
    904 		    offset - 0x80000000, prot, BUS_SPACE_MAP_LINEAR);
    905 	}
    906 
    907 	return pa;
    908 }
    909 
    910 static void
    911 summitfb_init_screen(void *cookie, struct vcons_screen *scr,
    912     int existing, long *defattr)
    913 {
    914 	struct summitfb_softc *sc = cookie;
    915 	struct rasops_info *ri = &scr->scr_ri;
    916 
    917 	ri->ri_depth = 8;
    918 	ri->ri_width = sc->sc_width;
    919 	ri->ri_height = sc->sc_height;
    920 	ri->ri_stride = 2048;
    921 	ri->ri_flg = RI_CENTER | RI_8BIT_IS_RGB
    922 #ifdef SUMMITFB_ENABLE_GC
    923 	    | RI_ENABLE_ALPHA | RI_PREFER_ALPHA
    924 #endif
    925 	    ;
    926 
    927 	ri->ri_bits = (void *)sc->sc_scr.fbaddr;
    928 	rasops_init(ri, 0, 0);
    929 	ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE |
    930 	    WSSCREEN_RESIZE;
    931 	scr->scr_flags |= VCONS_LOADFONT/* | VCONS_NO_CURSOR*/;
    932 
    933 	rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight,
    934 	    sc->sc_width / ri->ri_font->fontwidth);
    935 
    936 	ri->ri_hw = scr;
    937 
    938 	ri->ri_ops.copyrows = summitfb_copyrows;
    939 	ri->ri_ops.copycols = summitfb_copycols;
    940 	ri->ri_ops.eraserows = summitfb_eraserows;
    941 	ri->ri_ops.erasecols = summitfb_erasecols;
    942 	ri->ri_ops.cursor = summitfb_cursor;
    943 #ifdef SUMMITFB_ENABLE_GC
    944 	sc->sc_putchar = ri->ri_ops.putchar;
    945 	if (FONT_IS_ALPHA(ri->ri_font)) {
    946 		ri->ri_ops.putchar = summitfb_putchar_aa;
    947 	} else
    948 #endif
    949 	{
    950 		int fbwidth = (sc->sc_width + 511) & ~511;
    951 		int fcols = (fbwidth - sc->sc_width - 2) / ri->ri_font->fontwidth;
    952 		int frows = sc->sc_height / ri->ri_font->fontheight;
    953 		sc->sc_font_start = sc->sc_width + 2;
    954 		if ((fcols * frows) >= ri->ri_font->numchars) {
    955 			/* ok, we can do this */
    956 			sc->sc_cols = fcols;
    957 			sc->sc_font = ri->ri_font;
    958 			summitfb_loadfont(sc);
    959 			ri->ri_ops.putchar = summitfb_putchar_fast;
    960 		} else
    961 			ri->ri_ops.putchar = summitfb_putchar;
    962 	}
    963 }
    964 
    965 static int
    966 summitfb_putcmap(struct summitfb_softc *sc, struct wsdisplay_cmap *cm)
    967 {
    968 	u_char *r, *g, *b;
    969 	u_int index = cm->index;
    970 	u_int count = cm->count;
    971 	int i, error;
    972 	u_char rbuf[256], gbuf[256], bbuf[256];
    973 
    974 	if (cm->index >= 256 || cm->count > 256 ||
    975 	    (cm->index + cm->count) > 256)
    976 		return EINVAL;
    977 	error = copyin(cm->red, &rbuf[index], count);
    978 	if (error)
    979 		return error;
    980 	error = copyin(cm->green, &gbuf[index], count);
    981 	if (error)
    982 		return error;
    983 	error = copyin(cm->blue, &bbuf[index], count);
    984 	if (error)
    985 		return error;
    986 
    987 	memcpy(&sc->sc_cmap_red[index], &rbuf[index], count);
    988 	memcpy(&sc->sc_cmap_green[index], &gbuf[index], count);
    989 	memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count);
    990 
    991 	r = &sc->sc_cmap_red[index];
    992 	g = &sc->sc_cmap_green[index];
    993 	b = &sc->sc_cmap_blue[index];
    994 
    995 	for (i = 0; i < count; i++) {
    996 		summitfb_putpalreg(sc, index, *r, *g, *b);
    997 		index++;
    998 		r++, g++, b++;
    999 	}
   1000 	return 0;
   1001 }
   1002 
   1003 static int
   1004 summitfb_getcmap(struct summitfb_softc *sc, struct wsdisplay_cmap *cm)
   1005 {
   1006 	u_int index = cm->index;
   1007 	u_int count = cm->count;
   1008 	int error;
   1009 
   1010 	if (index >= 255 || count > 256 || index + count > 256)
   1011 		return EINVAL;
   1012 
   1013 	error = copyout(&sc->sc_cmap_red[index],   cm->red,   count);
   1014 	if (error)
   1015 		return error;
   1016 	error = copyout(&sc->sc_cmap_green[index], cm->green, count);
   1017 	if (error)
   1018 		return error;
   1019 	error = copyout(&sc->sc_cmap_blue[index],  cm->blue,  count);
   1020 	if (error)
   1021 		return error;
   1022 
   1023 	return 0;
   1024 }
   1025 
   1026 static void
   1027 summitfb_restore_palette(struct summitfb_softc *sc)
   1028 {
   1029 	uint8_t cmap[768];
   1030 	int i, j;
   1031 
   1032 	j = 0;
   1033 	rasops_get_cmap(&sc->sc_console_screen.scr_ri, cmap, sizeof(cmap));
   1034 	for (i = 0; i < 256; i++) {
   1035 		sc->sc_cmap_red[i] = cmap[j];
   1036 		sc->sc_cmap_green[i] = cmap[j + 1];
   1037 		sc->sc_cmap_blue[i] = cmap[j + 2];
   1038 		summitfb_putpalreg(sc, i, cmap[j], cmap[j + 1], cmap[j + 2]);
   1039 		j += 3;
   1040 	}
   1041 }
   1042 
   1043 static int
   1044 summitfb_putpalreg(struct summitfb_softc *sc, uint8_t idx,
   1045     uint8_t r, uint8_t g, uint8_t b)
   1046 {
   1047 
   1048 	summitfb_write4(sc, VISFX_COLOR_INDEX, idx);
   1049 	summitfb_write4(sc, VISFX_COLOR_VALUE, (r << 16) | ( g << 8) | b);
   1050 	summitfb_write4(sc, VISFX_COLOR_MASK, 0xff);
   1051 	return 0;
   1052 }
   1053 
   1054 static inline void
   1055 summitfb_wait_fifo(struct summitfb_softc *sc, uint32_t slots)
   1056 {
   1057 	uint32_t reg;
   1058 
   1059 	do {
   1060 		reg = summitfb_read4(sc, VISFX_FIFO);
   1061 	} while (reg < slots);
   1062 }
   1063 
   1064 static void
   1065 summitfb_rectfill(struct summitfb_softc *sc, int x, int y, int wi, int he,
   1066     uint32_t bg)
   1067 {
   1068 
   1069 	summitfb_write_mode(sc, VISFX_WRITE_MODE_FILL);
   1070 	summitfb_wait_fifo(sc, 4);
   1071 	summitfb_write4(sc, VISFX_IBO, RopSrc);
   1072 	summitfb_write4(sc, VISFX_FG_COLOUR, bg);
   1073 	summitfb_write4(sc, VISFX_START, (x << 16) | y);
   1074 	summitfb_write4(sc, VISFX_SIZE, (wi << 16) | he);
   1075 }
   1076 
   1077 static void
   1078 summitfb_bitblt(void *cookie, int xs, int ys, int xd, int yd, int wi,
   1079     int he, int rop)
   1080 {
   1081 	struct summitfb_softc *sc = cookie;
   1082 
   1083 	summitfb_write_mode(sc, VISFX_WRITE_MODE_PLAIN);
   1084 	summitfb_wait_fifo(sc, 4);
   1085 	summitfb_write4(sc, VISFX_IBO, rop);
   1086 	summitfb_write4(sc, VISFX_COPY_SRC, (xs << 16) | ys);
   1087 	summitfb_write4(sc, VISFX_COPY_WH, (wi << 16) | he);
   1088 	summitfb_write4(sc, VISFX_COPY_DST, (xd << 16) | yd);
   1089 
   1090 }
   1091 
   1092 static void
   1093 summitfb_nuke_cursor(struct rasops_info *ri)
   1094 {
   1095 	struct vcons_screen *scr = ri->ri_hw;
   1096 	struct summitfb_softc *sc = scr->scr_cookie;
   1097 	int wi, he, x, y;
   1098 
   1099 	if (ri->ri_flg & RI_CURSOR) {
   1100 		wi = ri->ri_font->fontwidth;
   1101 		he = ri->ri_font->fontheight;
   1102 		x = ri->ri_ccol * wi + ri->ri_xorigin;
   1103 		y = ri->ri_crow * he + ri->ri_yorigin;
   1104 		summitfb_bitblt(sc, x, y, x, y, wi, he, RopInv);
   1105 		ri->ri_flg &= ~RI_CURSOR;
   1106 	}
   1107 }
   1108 
   1109 static void
   1110 summitfb_cursor(void *cookie, int on, int row, int col)
   1111 {
   1112 	struct rasops_info *ri = cookie;
   1113 	struct vcons_screen *scr = ri->ri_hw;
   1114 	struct summitfb_softc *sc = scr->scr_cookie;
   1115 	int x, y, wi, he;
   1116 
   1117 	wi = ri->ri_font->fontwidth;
   1118 	he = ri->ri_font->fontheight;
   1119 
   1120 	if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) {
   1121 		if (on) {
   1122 			if (ri->ri_flg & RI_CURSOR) {
   1123 				summitfb_nuke_cursor(ri);
   1124 			}
   1125 			x = col * wi + ri->ri_xorigin;
   1126 			y = row * he + ri->ri_yorigin;
   1127 			summitfb_bitblt(sc, x, y, x, y, wi, he, RopInv);
   1128 			ri->ri_flg |= RI_CURSOR;
   1129 		}
   1130 		ri->ri_crow = row;
   1131 		ri->ri_ccol = col;
   1132 	} else {
   1133 		ri->ri_crow = row;
   1134 		ri->ri_ccol = col;
   1135 		ri->ri_flg &= ~RI_CURSOR;
   1136 	}
   1137 
   1138 }
   1139 
   1140 static void
   1141 summitfb_putchar(void *cookie, int row, int col, u_int c, long attr)
   1142 {
   1143 	struct rasops_info *ri = cookie;
   1144 	struct wsdisplay_font *font = PICK_FONT(ri, c);
   1145 	struct vcons_screen *scr = ri->ri_hw;
   1146 	struct summitfb_softc *sc = scr->scr_cookie;
   1147 	void *data;
   1148 	int i, x, y, wi, he;
   1149 	uint32_t bg, fg, mask;
   1150 
   1151 	if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL)
   1152 		return;
   1153 
   1154 	if (!CHAR_IN_FONT(c, font))
   1155 		return;
   1156 
   1157 	if (row == ri->ri_crow && col == ri->ri_ccol) {
   1158 		ri->ri_flg &= ~RI_CURSOR;
   1159 	}
   1160 
   1161 	wi = font->fontwidth;
   1162 	he = font->fontheight;
   1163 
   1164 	x = ri->ri_xorigin + col * wi;
   1165 	y = ri->ri_yorigin + row * he;
   1166 
   1167 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   1168 
   1169 	/* if we're drawing a space we're done here */
   1170 	if (c == 0x20) {
   1171 		summitfb_rectfill(sc, x, y, wi, he, bg);
   1172 		return;
   1173 	}
   1174 
   1175 	fg = ri->ri_devcmap[(attr >> 24) & 0x0f];
   1176 
   1177 	summitfb_write_mode(sc, VISFX_WRITE_MODE_EXPAND);
   1178 	summitfb_wait_fifo(sc, 6);
   1179 	summitfb_write4(sc, VISFX_IBO, RopSrc);
   1180 	summitfb_write4(sc, VISFX_FG_COLOUR, fg);
   1181 	summitfb_write4(sc, VISFX_BG_COLOUR, bg);
   1182 	mask = 0xffffffff << (32 - wi);
   1183 	summitfb_write4(sc, VISFX_PIXEL_MASK, mask);
   1184 	/* not a tpyo, coordinates *are* backwards for this register */
   1185 	summitfb_write4(sc, VISFX_VRAM_WRITE_DEST, (y << 16) | x);
   1186 
   1187 	data = WSFONT_GLYPH(c, font);
   1188 
   1189 	if (ri->ri_font->stride == 1) {
   1190 		uint8_t *data8 = data;
   1191 		for (i = 0; i < he; i++) {
   1192 			mask = *data8;
   1193 			summitfb_write4(sc, VISFX_VRAM_WRITE_DATA_INCRY,
   1194 			    mask << 24);
   1195 			data8++;
   1196 		}
   1197 	} else {
   1198 		uint16_t *data16 = data;
   1199 		for (i = 0; i < he; i++) {
   1200 			mask = *data16;
   1201 			summitfb_write4(sc, VISFX_VRAM_WRITE_DATA_INCRY,
   1202 			    mask << 16);
   1203 			data16++;
   1204 		}
   1205 	}
   1206 }
   1207 
   1208 static void
   1209 summitfb_loadfont(struct summitfb_softc *sc)
   1210 {
   1211 	int i, c, x, y;
   1212 	uint8_t *data;
   1213 	uint16_t *data16;
   1214 	uint32_t mask;
   1215 
   1216 	summitfb_setup(sc);
   1217 	summitfb_write_mode(sc, VISFX_WRITE_MODE_EXPAND);
   1218 	summitfb_write4(sc, VISFX_IBO, RopSrc);
   1219 	summitfb_write4(sc, VISFX_FG_COLOUR, 0xffffffff);
   1220 	summitfb_write4(sc, VISFX_BG_COLOUR, 0);
   1221 
   1222 	mask = 0xffffffff << (32 - sc->sc_font->fontwidth);
   1223 	summitfb_write4(sc, VISFX_PIXEL_MASK, mask);
   1224 
   1225 	for (c = 0; c < sc->sc_font->numchars; c++) {
   1226 		x = sc->sc_font_start + (c % sc->sc_cols) * sc->sc_font->fontwidth;
   1227 		y = (c / sc->sc_cols) * sc->sc_font->fontheight;
   1228 		data = WSFONT_GLYPH(sc->sc_font->firstchar + c, sc->sc_font);
   1229 		summitfb_write4(sc, VISFX_VRAM_WRITE_DEST, (y << 16) | x);
   1230 		if (sc->sc_font->stride == 1) {
   1231 			for (i = 0; i < sc->sc_font->fontheight; i++) {
   1232 				mask = *data;
   1233 				summitfb_write4(sc, VISFX_VRAM_WRITE_DATA_INCRY,
   1234 				    mask << 24);
   1235 				data++;
   1236 			}
   1237 		} else {
   1238 			data16 = (uint16_t *)data;
   1239 			for (i = 0; i < sc->sc_font->fontheight; i++) {
   1240 				mask = *data16;
   1241 				summitfb_write4(sc, VISFX_VRAM_WRITE_DATA_INCRY,
   1242 				    mask << 16);
   1243 				data16++;
   1244 			}
   1245 		}
   1246 	}
   1247 }
   1248 
   1249 static void
   1250 summitfb_putchar_fast(void *cookie, int row, int col, u_int c, long attr)
   1251 {
   1252 	struct rasops_info *ri = cookie;
   1253 	struct wsdisplay_font *font = PICK_FONT(ri, c);
   1254 	struct vcons_screen *scr = ri->ri_hw;
   1255 	struct summitfb_softc *sc = scr->scr_cookie;
   1256 	int i, x, y, wi, he, xs, ys;
   1257 	uint32_t bg, fg;
   1258 
   1259 	if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL)
   1260 		return;
   1261 
   1262 	if (!CHAR_IN_FONT(c, font))
   1263 		return;
   1264 
   1265 	/* for autogenerated line drawing characters */
   1266 	if (font != sc->sc_font) {
   1267 		summitfb_putchar(cookie, row, col, c, attr);
   1268 		return;
   1269 	}
   1270 
   1271 	if (row == ri->ri_crow && col == ri->ri_ccol) {
   1272 		ri->ri_flg &= ~RI_CURSOR;
   1273 	}
   1274 
   1275 	wi = font->fontwidth;
   1276 	he = font->fontheight;
   1277 
   1278 	x = ri->ri_xorigin + col * wi;
   1279 	y = ri->ri_yorigin + row * he;
   1280 
   1281 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   1282 
   1283 	/* if we're drawing a space we're done here */
   1284 	if (c == 0x20) {
   1285 		summitfb_rectfill(sc, x, y, wi, he, bg);
   1286 		return;
   1287 	}
   1288 
   1289 	fg = ri->ri_devcmap[(attr >> 24) & 0x0f];
   1290 
   1291 	summitfb_write_mode(sc, 0x050000c0);
   1292 	summitfb_wait_fifo(sc, 6);
   1293 	summitfb_write4(sc, VISFX_IBO, RopSrc);
   1294 	summitfb_write4(sc, VISFX_FG_COLOUR, fg);
   1295 	summitfb_write4(sc, VISFX_BG_COLOUR, bg);
   1296 
   1297 	i = c - font->firstchar;
   1298 	xs = sc->sc_font_start + (i % sc->sc_cols) * sc->sc_font->fontwidth;
   1299 	ys = (i / sc->sc_cols) * sc->sc_font->fontheight;
   1300 
   1301 	summitfb_write4(sc, VISFX_COPY_SRC, (xs << 16) | ys);
   1302 	summitfb_write4(sc, VISFX_COPY_WH, (wi << 16) | he);
   1303 	summitfb_write4(sc, VISFX_COPY_DST, (x << 16) | y);
   1304 
   1305 }
   1306 
   1307 #ifdef SUMMITFB_ENABLE_GC
   1308 static void
   1309 summitfb_putchar_aa(void *cookie, int row, int col, u_int c, long attr)
   1310 {
   1311 	struct rasops_info *ri = cookie;
   1312 	struct wsdisplay_font *font = PICK_FONT(ri, c);
   1313 	struct vcons_screen *scr = ri->ri_hw;
   1314 	struct summitfb_softc *sc = scr->scr_cookie;
   1315 	int x, y, wi, he, rv = GC_NOPE;
   1316 	uint32_t bg;
   1317 
   1318 	if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL)
   1319 		return;
   1320 
   1321 	if (!CHAR_IN_FONT(c, font))
   1322 		return;
   1323 
   1324 	if (row == ri->ri_crow && col == ri->ri_ccol) {
   1325 		ri->ri_flg &= ~RI_CURSOR;
   1326 	}
   1327 
   1328 	wi = font->fontwidth;
   1329 	he = font->fontheight;
   1330 
   1331 	x = ri->ri_xorigin + col * wi;
   1332 	y = ri->ri_yorigin + row * he;
   1333 
   1334 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   1335 
   1336 	if (c == 0x20) {
   1337 		summitfb_rectfill(sc, x, y, wi, he, bg);
   1338 		return;
   1339 	}
   1340 
   1341 	rv = glyphcache_try(&sc->sc_gc, c, x, y, attr);
   1342 	if (rv == GC_OK)
   1343 		return;
   1344 
   1345 	summitfb_setup_fb(sc);
   1346 	summitfb_wait(sc);
   1347 	sc->sc_putchar(cookie, row, col, c, attr);
   1348 
   1349 	if (rv == GC_ADD)
   1350 		glyphcache_add(&sc->sc_gc, c, x, y);
   1351 }
   1352 #endif
   1353 
   1354 static void
   1355 summitfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
   1356 {
   1357 	struct rasops_info *ri = cookie;
   1358 	struct vcons_screen *scr = ri->ri_hw;
   1359 	struct summitfb_softc *sc = scr->scr_cookie;
   1360 	int32_t xs, xd, y, width, height;
   1361 
   1362 	if (sc->sc_locked == 0 && sc->sc_mode == WSDISPLAYIO_MODE_EMUL) {
   1363 
   1364 		if (ri->ri_crow == row &&
   1365 		    ri->ri_ccol >= srccol && ri->ri_ccol < (srccol + ncols) &&
   1366 		    (ri->ri_flg & RI_CURSOR)) {
   1367 			summitfb_nuke_cursor(ri);
   1368 		}
   1369 
   1370 		xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol;
   1371 		xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol;
   1372 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   1373 		width = ri->ri_font->fontwidth * ncols;
   1374 		height = ri->ri_font->fontheight;
   1375 		summitfb_bitblt(sc, xs, y, xd, y, width, height, RopSrc);
   1376 
   1377 		if (ri->ri_crow == row &&
   1378 		    ri->ri_ccol >= dstcol && ri->ri_ccol < (dstcol + ncols))
   1379 			ri->ri_flg &= ~RI_CURSOR;
   1380 	}
   1381 }
   1382 
   1383 static void
   1384 summitfb_erasecols(void *cookie, int row, int startcol, int ncols,
   1385     long fillattr)
   1386 {
   1387 	struct rasops_info *ri = cookie;
   1388 	struct vcons_screen *scr = ri->ri_hw;
   1389 	struct summitfb_softc *sc = scr->scr_cookie;
   1390 	int32_t x, y, width, height, fg, bg, ul;
   1391 
   1392 	if (sc->sc_locked == 0 && sc->sc_mode == WSDISPLAYIO_MODE_EMUL) {
   1393 		x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol;
   1394 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   1395 		width = ri->ri_font->fontwidth * ncols;
   1396 		height = ri->ri_font->fontheight;
   1397 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   1398 
   1399 		summitfb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]);
   1400 
   1401 		if (ri->ri_crow == row &&
   1402 		    ri->ri_ccol >= startcol &&
   1403 		    ri->ri_ccol < (startcol + ncols))
   1404 			ri->ri_flg &= ~RI_CURSOR;
   1405 	}
   1406 }
   1407 
   1408 static void
   1409 summitfb_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
   1410 {
   1411 	struct rasops_info *ri = cookie;
   1412 	struct vcons_screen *scr = ri->ri_hw;
   1413 	struct summitfb_softc *sc = scr->scr_cookie;
   1414 	int32_t x, ys, yd, width, height;
   1415 
   1416 	if (sc->sc_locked == 0 && sc->sc_mode == WSDISPLAYIO_MODE_EMUL) {
   1417 
   1418 		if (ri->ri_crow >= srcrow && ri->ri_crow < (srcrow + nrows) &&
   1419 		    (ri->ri_flg & RI_CURSOR)) {
   1420 			summitfb_nuke_cursor(ri);
   1421 		}
   1422 
   1423 		x = ri->ri_xorigin;
   1424 		ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow;
   1425 		yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow;
   1426 		width = ri->ri_emuwidth;
   1427 		height = ri->ri_font->fontheight * nrows;
   1428 		summitfb_bitblt(sc, x, ys, x, yd, width, height, RopSrc);
   1429 
   1430 		if (ri->ri_crow >= dstrow && ri->ri_crow < (dstrow + nrows))
   1431 			ri->ri_flg &= ~RI_CURSOR;
   1432 	}
   1433 }
   1434 
   1435 static void
   1436 summitfb_eraserows(void *cookie, int row, int nrows, long fillattr)
   1437 {
   1438 	struct rasops_info *ri = cookie;
   1439 	struct vcons_screen *scr = ri->ri_hw;
   1440 	struct summitfb_softc *sc = scr->scr_cookie;
   1441 	int32_t x, y, width, height, fg, bg, ul;
   1442 
   1443 	if (sc->sc_locked == 0 && sc->sc_mode == WSDISPLAYIO_MODE_EMUL) {
   1444 		x = ri->ri_xorigin;
   1445 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   1446 		width = ri->ri_emuwidth;
   1447 		height = ri->ri_font->fontheight * nrows;
   1448 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   1449 
   1450 		summitfb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]);
   1451 
   1452 		if (ri->ri_crow >= row && ri->ri_crow < (row + nrows))
   1453 			ri->ri_flg &= ~RI_CURSOR;
   1454 	}
   1455 }
   1456 
   1457 static void
   1458 summitfb_move_cursor(struct summitfb_softc *sc, int x, int y)
   1459 {
   1460 	uint32_t pos;
   1461 
   1462 	sc->sc_cursor_x = x;
   1463 	x -= sc->sc_hot_x;
   1464 	sc->sc_cursor_y = y;
   1465 	y -= sc->sc_hot_y;
   1466 
   1467 	if (x < 0)
   1468 		x = 0x1000 - x;
   1469 	if (y < 0)
   1470 		y = 0x1000 - y;
   1471 	pos = (x << 16) | y;
   1472 	if (sc->sc_enabled)
   1473 		pos |= 0x80000000;
   1474 	summitfb_write4(sc, VISFX_CURSOR_POS, pos);
   1475 }
   1476 
   1477 static int
   1478 summitfb_do_cursor(struct summitfb_softc *sc, struct wsdisplay_cursor *cur)
   1479 {
   1480 
   1481 	if (cur->which & WSDISPLAY_CURSOR_DOCUR) {
   1482 		sc->sc_enabled = cur->enable;
   1483 		cur->which |= WSDISPLAY_CURSOR_DOPOS;
   1484 	}
   1485 	if (cur->which & WSDISPLAY_CURSOR_DOHOT) {
   1486 		sc->sc_hot_x = cur->hot.x;
   1487 		sc->sc_hot_y = cur->hot.y;
   1488 		cur->which |= WSDISPLAY_CURSOR_DOPOS;
   1489 	}
   1490 	if (cur->which & WSDISPLAY_CURSOR_DOPOS) {
   1491 		summitfb_move_cursor(sc, cur->pos.x, cur->pos.y);
   1492 	}
   1493 	if (cur->which & WSDISPLAY_CURSOR_DOCMAP) {
   1494 		uint32_t rgb;
   1495 		uint8_t r[2], g[2], b[2];
   1496 
   1497 		copyin(cur->cmap.blue, b, 2);
   1498 		copyin(cur->cmap.green, g, 2);
   1499 		copyin(cur->cmap.red, r, 2);
   1500 		summitfb_write4(sc, VISFX_CURSOR_INDEX, 0);
   1501 		rgb = r[0] << 16 | g[0] << 8 | b[0];
   1502 		summitfb_write4(sc, VISFX_CURSOR_BG, rgb);
   1503 		rgb = r[1] << 16 | g[1] << 8 | b[1];
   1504 		summitfb_write4(sc, VISFX_CURSOR_FG, rgb);
   1505 
   1506 	}
   1507 	if (cur->which & WSDISPLAY_CURSOR_DOSHAPE) {
   1508 
   1509 		uint32_t buffer[128], latch, tmp;
   1510 		int i;
   1511 
   1512 		copyin(cur->mask, buffer, 512);
   1513 		summitfb_write4(sc, VISFX_CURSOR_INDEX, 0);
   1514 		for (i = 0; i < 128; i += 2) {
   1515 			latch = 0;
   1516 			tmp = buffer[i] & 0x80808080;
   1517 			latch |= tmp >> 7;
   1518 			tmp = buffer[i] & 0x40404040;
   1519 			latch |= tmp >> 5;
   1520 			tmp = buffer[i] & 0x20202020;
   1521 			latch |= tmp >> 3;
   1522 			tmp = buffer[i] & 0x10101010;
   1523 			latch |= tmp >> 1;
   1524 			tmp = buffer[i] & 0x08080808;
   1525 			latch |= tmp << 1;
   1526 			tmp = buffer[i] & 0x04040404;
   1527 			latch |= tmp << 3;
   1528 			tmp = buffer[i] & 0x02020202;
   1529 			latch |= tmp << 5;
   1530 			tmp = buffer[i] & 0x01010101;
   1531 			latch |= tmp << 7;
   1532 			summitfb_write4(sc, VISFX_CURSOR_DATA, latch);
   1533 			latch = 0;
   1534 			tmp = buffer[i + 1] & 0x80808080;
   1535 			latch |= tmp >> 7;
   1536 			tmp = buffer[i + 1] & 0x40404040;
   1537 			latch |= tmp >> 5;
   1538 			tmp = buffer[i + 1] & 0x20202020;
   1539 			latch |= tmp >> 3;
   1540 			tmp = buffer[i + 1] & 0x10101010;
   1541 			latch |= tmp >> 1;
   1542 			tmp = buffer[i + 1] & 0x08080808;
   1543 			latch |= tmp << 1;
   1544 			tmp = buffer[i + 1] & 0x04040404;
   1545 			latch |= tmp << 3;
   1546 			tmp = buffer[i + 1] & 0x02020202;
   1547 			latch |= tmp << 5;
   1548 			tmp = buffer[i + 1] & 0x01010101;
   1549 			latch |= tmp << 7;
   1550 			summitfb_write4(sc, VISFX_CURSOR_DATA, latch);
   1551 		}
   1552 
   1553 		summitfb_write4(sc, VISFX_CURSOR_INDEX, 0x80);
   1554 		copyin(cur->image, buffer, 512);
   1555 		for (i = 0; i < 128; i += 2) {
   1556 			latch = 0;
   1557 			tmp = buffer[i] & 0x80808080;
   1558 			latch |= tmp >> 7;
   1559 			tmp = buffer[i] & 0x40404040;
   1560 			latch |= tmp >> 5;
   1561 			tmp = buffer[i] & 0x20202020;
   1562 			latch |= tmp >> 3;
   1563 			tmp = buffer[i] & 0x10101010;
   1564 			latch |= tmp >> 1;
   1565 			tmp = buffer[i] & 0x08080808;
   1566 			latch |= tmp << 1;
   1567 			tmp = buffer[i] & 0x04040404;
   1568 			latch |= tmp << 3;
   1569 			tmp = buffer[i] & 0x02020202;
   1570 			latch |= tmp << 5;
   1571 			tmp = buffer[i] & 0x01010101;
   1572 			latch |= tmp << 7;
   1573 			summitfb_write4(sc, VISFX_CURSOR_DATA, latch);
   1574 			latch = 0;
   1575 			tmp = buffer[i + 1] & 0x80808080;
   1576 			latch |= tmp >> 7;
   1577 			tmp = buffer[i + 1] & 0x40404040;
   1578 			latch |= tmp >> 5;
   1579 			tmp = buffer[i + 1] & 0x20202020;
   1580 			latch |= tmp >> 3;
   1581 			tmp = buffer[i + 1] & 0x10101010;
   1582 			latch |= tmp >> 1;
   1583 			tmp = buffer[i + 1] & 0x08080808;
   1584 			latch |= tmp << 1;
   1585 			tmp = buffer[i + 1] & 0x04040404;
   1586 			latch |= tmp << 3;
   1587 			tmp = buffer[i + 1] & 0x02020202;
   1588 			latch |= tmp << 5;
   1589 			tmp = buffer[i + 1] & 0x01010101;
   1590 			latch |= tmp << 7;
   1591 			summitfb_write4(sc, VISFX_CURSOR_DATA, latch);
   1592 		}
   1593 	}
   1594 
   1595 	return 0;
   1596 }
   1597 
   1598 static void
   1599 summitfb_set_video(struct summitfb_softc *sc, int on)
   1600 {
   1601 
   1602 	if (sc->sc_video_on == on)
   1603 		return;
   1604 
   1605 	sc->sc_video_on = on;
   1606 
   1607 	summitfb_wait(sc);
   1608 	if (on) {
   1609 		summitfb_write4(sc, VISFX_MPC, MPC_VIDEO_ON);
   1610 	} else {
   1611 		summitfb_write4(sc, VISFX_MPC, MPC_VSYNC_OFF | MPC_HSYNC_OFF);
   1612 	}
   1613 }
   1614 
   1615 static void
   1616 summitfb_copyfont(struct summitfb_softc *sc)
   1617 {
   1618 	struct sti_font *fp = &sc->sc_scr.scr_curfont;
   1619 	uint8_t *font = sc->sc_scr.scr_romfont;
   1620 	uint8_t *fontbuf, *fontdata, *src, *dst;
   1621 	struct wsdisplay_font *f;
   1622 	int bufsize, i, si;
   1623 
   1624 	if (font == NULL)
   1625 		return;
   1626 	bufsize = sizeof(struct wsdisplay_font) + 32 + fp->bpc * ( fp->last - fp->first);
   1627 	DPRINTF(("%s: %dx%d %d\n", __func__, fp->width, fp->height, bufsize));
   1628 	fontbuf = kmem_alloc(bufsize, KM_NOSLEEP);
   1629 	if (fontbuf == NULL)
   1630 		return;
   1631 	f = (struct wsdisplay_font *)fontbuf;
   1632 	f->name = fontbuf + sizeof(struct wsdisplay_font);
   1633 	fontdata = fontbuf + sizeof(struct wsdisplay_font) + 32;
   1634 	strcpy(fontbuf + sizeof(struct wsdisplay_font), "HP ROM");
   1635 	f->firstchar = fp->first;
   1636 	f->numchars = (fp->last + 1) - fp->first;
   1637 	f->encoding = WSDISPLAY_FONTENC_ISO;
   1638 	f->fontwidth = fp->width;
   1639 	f->fontheight = fp->height;
   1640 	f->stride = (fp->width + 7) >> 3;
   1641 	f->bitorder = WSDISPLAY_FONTORDER_L2R;
   1642 	f->byteorder = WSDISPLAY_FONTORDER_L2R;
   1643 	f->data = fontdata;
   1644 	/* skip over font struct */
   1645 	font += sizeof(struct sti_font);
   1646 	/* now copy and rearrange the glyphs into ISO order */
   1647 	/* first, copy the characters up to 0x7f */
   1648 	memcpy(fontdata, font, (0x80 - fp->first) * fp->bpc);
   1649 	/* zero 0x80 to 0x9f */
   1650 	memset(fontdata + 0x80 * fp->bpc, 0, 0x20 * fp->bpc);
   1651 	/* rearrange 0xa0 till last */
   1652 	for (i = 0xa0; i < (fp->last + 1); i++) {
   1653 		dst = fontdata + fp->bpc * i;
   1654 		si = sti_unitoroman[i - 0xa0];
   1655 		if (si != 0) {
   1656 			src = font + fp->bpc * si;
   1657 			memcpy(dst, src, fp->bpc);
   1658 		} else {
   1659 			/* no mapping - zeeo this cell */
   1660 			memset(dst, 0, fp->bpc);
   1661 		}
   1662 	}
   1663 	wsfont_add(f, 0);
   1664 }
   1665