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radeonfb.c revision 1.88.2.1
      1 /*	$NetBSD: radeonfb.c,v 1.88.2.1 2017/08/28 17:52:25 skrll Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2006 Itronix Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Garrett D'Amore for Itronix Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. The name of Itronix Inc. may not be used to endorse
     18  *    or promote products derived from this software without specific
     19  *    prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND ANY EXPRESS
     22  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     23  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
     25  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
     27  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     30  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     31  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 /*
     35  * ATI Technologies Inc. ("ATI") has not assisted in the creation of, and
     36  * does not endorse, this software.  ATI will not be responsible or liable
     37  * for any actual or alleged damage or loss caused by or in connection with
     38  * the use of or reliance on this software.
     39  */
     40 
     41 /*
     42  * Portions of this code were taken from XFree86's Radeon driver, which bears
     43  * this notice:
     44  *
     45  * Copyright 2000 ATI Technologies Inc., Markham, Ontario, and
     46  *                VA Linux Systems Inc., Fremont, California.
     47  *
     48  * All Rights Reserved.
     49  *
     50  * Permission is hereby granted, free of charge, to any person obtaining
     51  * a copy of this software and associated documentation files (the
     52  * "Software"), to deal in the Software without restriction, including
     53  * without limitation on the rights to use, copy, modify, merge,
     54  * publish, distribute, sublicense, and/or sell copies of the Software,
     55  * and to permit persons to whom the Software is furnished to do so,
     56  * subject to the following conditions:
     57  *
     58  * The above copyright notice and this permission notice (including the
     59  * next paragraph) shall be included in all copies or substantial
     60  * portions of the Software.
     61  *
     62  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     63  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     64  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     65  * NON-INFRINGEMENT.  IN NO EVENT SHALL ATI, VA LINUX SYSTEMS AND/OR
     66  * THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
     67  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     68  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     69  * DEALINGS IN THE SOFTWARE.
     70  */
     71 
     72 #include <sys/cdefs.h>
     73 __KERNEL_RCSID(0, "$NetBSD: radeonfb.c,v 1.88.2.1 2017/08/28 17:52:25 skrll Exp $");
     74 
     75 #include <sys/param.h>
     76 #include <sys/systm.h>
     77 #include <sys/device.h>
     78 #include <sys/malloc.h>
     79 #include <sys/bus.h>
     80 #include <sys/kernel.h>
     81 #include <sys/lwp.h>
     82 #include <sys/kauth.h>
     83 
     84 #include <dev/wscons/wsdisplayvar.h>
     85 #include <dev/wscons/wsconsio.h>
     86 #include <dev/wsfont/wsfont.h>
     87 #include <dev/rasops/rasops.h>
     88 #include <dev/videomode/videomode.h>
     89 #include <dev/videomode/edidvar.h>
     90 #include <dev/wscons/wsdisplay_vconsvar.h>
     91 #include <dev/pci/wsdisplay_pci.h>
     92 #include <dev/wscons/wsdisplay_glyphcachevar.h>
     93 
     94 #include <dev/pci/pcidevs.h>
     95 #include <dev/pci/pcireg.h>
     96 #include <dev/pci/pcivar.h>
     97 #include <dev/pci/pciio.h>
     98 #include <dev/pci/radeonfbreg.h>
     99 #include <dev/pci/radeonfbvar.h>
    100 #include "opt_radeonfb.h"
    101 #include "opt_vcons.h"
    102 
    103 #ifdef RADEONFB_DEPTH_32
    104 #define RADEONFB_DEFAULT_DEPTH 32
    105 #else
    106 #define RADEONFB_DEFAULT_DEPTH 8
    107 #endif
    108 
    109 static int radeonfb_match(device_t, cfdata_t, void *);
    110 static void radeonfb_attach(device_t, device_t, void *);
    111 static int radeonfb_ioctl(void *, void *, unsigned long, void *, int,
    112     struct lwp *);
    113 static paddr_t radeonfb_mmap(void *, void *, off_t, int);
    114 static int radeonfb_scratch_test(struct radeonfb_softc *, int, uint32_t);
    115 static void radeonfb_loadbios(struct radeonfb_softc *,
    116     const struct pci_attach_args *);
    117 
    118 static uintmax_t radeonfb_getprop_num(struct radeonfb_softc *, const char *,
    119     uintmax_t);
    120 static int radeonfb_getclocks(struct radeonfb_softc *);
    121 static int radeonfb_gettmds(struct radeonfb_softc *);
    122 static int radeonfb_calc_dividers(struct radeonfb_softc *, uint32_t,
    123     uint32_t *, uint32_t *);
    124 static int radeonfb_getconnectors(struct radeonfb_softc *);
    125 static const struct videomode *radeonfb_modelookup(const char *);
    126 static void radeonfb_init_screen(void *, struct vcons_screen *, int, long *);
    127 static void radeonfb_pllwriteupdate(struct radeonfb_softc *, int);
    128 static void radeonfb_pllwaitatomicread(struct radeonfb_softc *, int);
    129 static void radeonfb_program_vclk(struct radeonfb_softc *, int, int);
    130 static void radeonfb_modeswitch(struct radeonfb_display *);
    131 static void radeonfb_setcrtc(struct radeonfb_display *, int);
    132 static void radeonfb_init_misc(struct radeonfb_softc *);
    133 static void radeonfb_set_fbloc(struct radeonfb_softc *);
    134 static void radeonfb_init_palette(struct radeonfb_display *);
    135 static void radeonfb_r300cg_workaround(struct radeonfb_softc *);
    136 
    137 static int radeonfb_isblank(struct radeonfb_display *);
    138 static void radeonfb_blank(struct radeonfb_display *, int);
    139 static int radeonfb_set_cursor(struct radeonfb_display *,
    140     struct wsdisplay_cursor *);
    141 static int radeonfb_set_curpos(struct radeonfb_display *,
    142     struct wsdisplay_curpos *);
    143 static void radeonfb_putpal(struct radeonfb_display *, int, int, int, int);
    144 static int radeonfb_putcmap(struct radeonfb_display *, struct wsdisplay_cmap *);
    145 static int radeonfb_getcmap(struct radeonfb_display *, struct wsdisplay_cmap *);
    146 
    147 /* acceleration support */
    148 static void  radeonfb_rectfill(struct radeonfb_display *, int dstx, int dsty,
    149     int width, int height, uint32_t color);
    150 static void  radeonfb_rectfill_a(void *, int, int, int, int, long);
    151 static void radeonfb_bitblt(void *, int srcx, int srcy,
    152     int dstx, int dsty, int width, int height, int rop);
    153 
    154 /* hw cursor support */
    155 static void radeonfb_cursor_cmap(struct radeonfb_display *);
    156 static void radeonfb_cursor_shape(struct radeonfb_display *);
    157 static void radeonfb_cursor_position(struct radeonfb_display *);
    158 static void radeonfb_cursor_visible(struct radeonfb_display *);
    159 static void radeonfb_cursor_update(struct radeonfb_display *, unsigned);
    160 
    161 static inline void radeonfb_wait_fifo(struct radeonfb_softc *, int);
    162 static void radeonfb_engine_idle(struct radeonfb_softc *);
    163 static void radeonfb_engine_flush(struct radeonfb_softc *);
    164 static void radeonfb_engine_reset(struct radeonfb_softc *);
    165 static void radeonfb_engine_init(struct radeonfb_display *);
    166 static inline void radeonfb_unclip(struct radeonfb_softc *) __unused;
    167 
    168 static void radeonfb_eraserows(void *, int, int, long);
    169 static void radeonfb_erasecols(void *, int, int, int, long);
    170 static void radeonfb_copyrows(void *, int, int, int);
    171 static void radeonfb_copycols(void *, int, int, int, int);
    172 static void radeonfb_cursor(void *, int, int, int);
    173 static void radeonfb_putchar(void *, int, int, unsigned, long);
    174 static void radeonfb_putchar_aa32(void *, int, int, unsigned, long);
    175 static void radeonfb_putchar_aa8(void *, int, int, unsigned, long);
    176 #ifndef RADEONFB_ALWAYS_ACCEL_PUTCHAR
    177 static void radeonfb_putchar_wrapper(void *, int, int, unsigned, long);
    178 #endif
    179 
    180 static int radeonfb_set_backlight(struct radeonfb_display *, int);
    181 static int radeonfb_get_backlight(struct radeonfb_display *);
    182 static void radeonfb_switch_backlight(struct radeonfb_display *, int);
    183 static void radeonfb_lvds_callout(void *);
    184 
    185 static void radeonfb_brightness_up(device_t);
    186 static void radeonfb_brightness_down(device_t);
    187 
    188 static struct videomode *radeonfb_best_refresh(struct videomode *,
    189     struct videomode *);
    190 static void radeonfb_pickres(struct radeonfb_display *, uint16_t *,
    191     uint16_t *, int);
    192 static const struct videomode *radeonfb_port_mode(struct radeonfb_softc *,
    193     struct radeonfb_port *, int, int);
    194 
    195 static int radeonfb_drm_print(void *, const char *);
    196 
    197 #ifdef	RADEONFB_DEBUG
    198 int	radeon_debug = 1;
    199 #define	DPRINTF(x)	\
    200 	if (radeon_debug) printf x
    201 #define	PRINTREG(r)	DPRINTF((#r " = %08x\n", GET32(sc, r)))
    202 #define	PRINTPLL(r)	DPRINTF((#r " = %08x\n", GETPLL(sc, r)))
    203 #else
    204 #define	DPRINTF(x)
    205 #define	PRINTREG(r)
    206 #define	PRINTPLL(r)
    207 #endif
    208 
    209 #define	ROUNDUP(x,y)	(((x) + ((y) - 1)) & ~((y) - 1))
    210 
    211 #ifndef	RADEON_DEFAULT_MODE
    212 /* any reasonably modern display should handle this */
    213 #define	RADEON_DEFAULT_MODE	"1024x768x60"
    214 #endif
    215 
    216 extern const u_char rasops_cmap[768];
    217 
    218 const char	*radeonfb_default_mode = RADEON_DEFAULT_MODE;
    219 
    220 static struct {
    221 	int		size;		/* minimum memory size (MB) */
    222 	int		maxx;		/* maximum x dimension */
    223 	int		maxy;		/* maximum y dimension */
    224 	int		maxbpp;		/* maximum bpp */
    225 	int		maxdisp;	/* maximum logical display count */
    226 } radeonfb_limits[] = {
    227 	{ 32,	2048, 1536, 32, 2 },
    228 	{ 16,	1600, 1200, 32, 2 },
    229 	{ 8,	1600, 1200, 32, 1 },
    230 	{ 0,	0, 0, 0, 0 },
    231 };
    232 
    233 static struct wsscreen_descr radeonfb_stdscreen = {
    234 	"fb",		/* name */
    235 	0, 0,		/* ncols, nrows */
    236 	NULL,		/* textops */
    237 	8, 16,		/* fontwidth, fontheight */
    238 	WSSCREEN_WSCOLORS | WSSCREEN_UNDERLINE | WSSCREEN_RESIZE, /* capabilities */
    239 	0,		/* modecookie */
    240 };
    241 
    242 struct wsdisplay_accessops radeonfb_accessops = {
    243 	radeonfb_ioctl,
    244 	radeonfb_mmap,
    245 	NULL,		/* vcons_alloc_screen */
    246 	NULL,		/* vcons_free_screen */
    247 	NULL,		/* vcons_show_screen */
    248 	NULL,		/* load_font */
    249 	NULL,		/* pollc */
    250 	NULL,		/* scroll */
    251 };
    252 
    253 static struct {
    254 	uint16_t	devid;
    255 	uint16_t	family;
    256 	uint16_t	flags;
    257 } radeonfb_devices[] =
    258 {
    259 	/* R100 family */
    260 	{ PCI_PRODUCT_ATI_RADEON_R100_QD,	RADEON_R100, 0 },
    261 	{ PCI_PRODUCT_ATI_RADEON_R100_QE,	RADEON_R100, 0 },
    262 	{ PCI_PRODUCT_ATI_RADEON_R100_QF,	RADEON_R100, 0 },
    263 	{ PCI_PRODUCT_ATI_RADEON_R100_QG,	RADEON_R100, 0 },
    264 
    265 	/* RV100 family */
    266 	{ PCI_PRODUCT_ATI_RADEON_RV100_LY,	RADEON_RV100, RFB_MOB },
    267 	{ PCI_PRODUCT_ATI_RADEON_RV100_LZ,	RADEON_RV100, RFB_MOB },
    268 	{ PCI_PRODUCT_ATI_RADEON_RV100_QY,	RADEON_RV100, 0 },
    269 	{ PCI_PRODUCT_ATI_RADEON_RV100_QZ,	RADEON_RV100, 0 },
    270 
    271 	/* RS100 family */
    272 	{ PCI_PRODUCT_ATI_RADEON_RS100_4136,	RADEON_RS100, 0 },
    273 	{ PCI_PRODUCT_ATI_RADEON_RS100_4336,	RADEON_RS100, RFB_MOB },
    274 
    275 	/* RS200/RS250 family */
    276 	{ PCI_PRODUCT_ATI_RADEON_RS200_4337,	RADEON_RS200, RFB_MOB },
    277 	{ PCI_PRODUCT_ATI_RADEON_RS200_A7,	RADEON_RS200, 0 },
    278 	{ PCI_PRODUCT_ATI_RADEON_RS250_B7,	RADEON_RS200, RFB_MOB },
    279 	{ PCI_PRODUCT_ATI_RADEON_RS250_D7,	RADEON_RS200, 0 },
    280 
    281 	/* R200 family */
    282 	/* add more R200 products? , 5148 */
    283 	{ PCI_PRODUCT_ATI_RADEON_R200_BB,	RADEON_R200, 0 },
    284 	{ PCI_PRODUCT_ATI_RADEON_R200_BC,	RADEON_R200, 0 },
    285 	{ PCI_PRODUCT_ATI_RADEON_R200_QH,	RADEON_R200, 0 },
    286 	{ PCI_PRODUCT_ATI_RADEON_R200_QL,	RADEON_R200, 0 },
    287 	{ PCI_PRODUCT_ATI_RADEON_R200_QM,	RADEON_R200, 0 },
    288 
    289 	/* RV200 family */
    290 	{ PCI_PRODUCT_ATI_RADEON_RV200_LW,	RADEON_RV200, RFB_MOB },
    291 	{ PCI_PRODUCT_ATI_RADEON_RV200_LX,	RADEON_RV200, RFB_MOB },
    292 	{ PCI_PRODUCT_ATI_RADEON_RV200_QW,	RADEON_RV200, 0 },
    293 	{ PCI_PRODUCT_ATI_RADEON_RV200_QX,	RADEON_RV200, 0 },
    294 
    295 	/* RV250 family */
    296 	{ PCI_PRODUCT_ATI_RADEON_RV250_4966,	RADEON_RV250, 0 },
    297 	{ PCI_PRODUCT_ATI_RADEON_RV250_4967,	RADEON_RV250, 0 },
    298 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C64,	RADEON_RV250, RFB_MOB },
    299 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C66,	RADEON_RV250, RFB_MOB },
    300 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C67,	RADEON_RV250, RFB_MOB },
    301 
    302 	/* RS300 family */
    303 	{ PCI_PRODUCT_ATI_RADEON_RS300_X5,	RADEON_RS300, 0 },
    304 	{ PCI_PRODUCT_ATI_RADEON_RS300_X4,	RADEON_RS300, 0 },
    305 	{ PCI_PRODUCT_ATI_RADEON_RS300_7834,	RADEON_RS300, 0 },
    306 	{ PCI_PRODUCT_ATI_RADEON_RS300_7835,	RADEON_RS300, RFB_MOB },
    307 
    308 	/* RV280 family */
    309 	{ PCI_PRODUCT_ATI_RADEON_RV280_5960,	RADEON_RV280, 0 },
    310 	{ PCI_PRODUCT_ATI_RADEON_RV280_5961,	RADEON_RV280, 0 },
    311 	{ PCI_PRODUCT_ATI_RADEON_RV280_5962,	RADEON_RV280, 0 },
    312 	{ PCI_PRODUCT_ATI_RADEON_RV280_5963,	RADEON_RV280, 0 },
    313 	{ PCI_PRODUCT_ATI_RADEON_RV280_5964,	RADEON_RV280, 0 },
    314 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C61,	RADEON_RV280, RFB_MOB },
    315 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C63,	RADEON_RV280, RFB_MOB },
    316 
    317 	/* R300 family */
    318 	{ PCI_PRODUCT_ATI_RADEON_R300_AD,	RADEON_R300, 0 },
    319 	{ PCI_PRODUCT_ATI_RADEON_R300_AE,	RADEON_R300, 0 },
    320 	{ PCI_PRODUCT_ATI_RADEON_R300_AF,	RADEON_R300, 0 },
    321 	{ PCI_PRODUCT_ATI_RADEON_R300_AG,	RADEON_R300, 0 },
    322 	{ PCI_PRODUCT_ATI_RADEON_R300_ND,	RADEON_R300, 0 },
    323 	{ PCI_PRODUCT_ATI_RADEON_R300_NE,	RADEON_R300, 0 },
    324 	{ PCI_PRODUCT_ATI_RADEON_R300_NF,	RADEON_R300, 0 },
    325 	{ PCI_PRODUCT_ATI_RADEON_R300_NG,	RADEON_R300, 0 },
    326 
    327 	/* RV350/RV360 family */
    328 	{ PCI_PRODUCT_ATI_RADEON_RV350_AP,	RADEON_RV350, 0 },
    329 	{ PCI_PRODUCT_ATI_RADEON_RV350_AQ,	RADEON_RV350, 0 },
    330 	{ PCI_PRODUCT_ATI_RADEON_RV360_AR,	RADEON_RV350, 0 },
    331 	{ PCI_PRODUCT_ATI_RADEON_RV350_AS,	RADEON_RV350, 0 },
    332 	{ PCI_PRODUCT_ATI_RADEON_RV350_AT,	RADEON_RV350, 0 },
    333 	{ PCI_PRODUCT_ATI_RADEON_RV350_AV,	RADEON_RV350, 0 },
    334 	{ PCI_PRODUCT_ATI_RADEON_RV350_NP,	RADEON_RV350, RFB_MOB },
    335 	{ PCI_PRODUCT_ATI_RADEON_RV350_NQ,	RADEON_RV350, RFB_MOB },
    336 	{ PCI_PRODUCT_ATI_RADEON_RV350_NR,	RADEON_RV350, RFB_MOB },
    337 	{ PCI_PRODUCT_ATI_RADEON_RV350_NS,	RADEON_RV350, RFB_MOB },
    338 	{ PCI_PRODUCT_ATI_RADEON_RV350_NT,	RADEON_RV350, RFB_MOB },
    339 	{ PCI_PRODUCT_ATI_RADEON_RV350_NV,	RADEON_RV350, RFB_MOB },
    340 
    341 	/* R350/R360 family */
    342 	{ PCI_PRODUCT_ATI_RADEON_R350_AH,	RADEON_R350, 0 },
    343 	{ PCI_PRODUCT_ATI_RADEON_R350_AI,	RADEON_R350, 0 },
    344 	{ PCI_PRODUCT_ATI_RADEON_R350_AJ,	RADEON_R350, 0 },
    345 	{ PCI_PRODUCT_ATI_RADEON_R350_AK,	RADEON_R350, 0 },
    346 	{ PCI_PRODUCT_ATI_RADEON_R350_NH,	RADEON_R350, 0 },
    347 	{ PCI_PRODUCT_ATI_RADEON_R350_NI,	RADEON_R350, 0 },
    348 	{ PCI_PRODUCT_ATI_RADEON_R350_NK,	RADEON_R350, 0 },
    349 	{ PCI_PRODUCT_ATI_RADEON_R360_NJ,	RADEON_R350, 0 },
    350 
    351 	/* RV380/RV370 family */
    352 	{ PCI_PRODUCT_ATI_RADEON_RV380_3150,	RADEON_RV380, RFB_MOB },
    353 	{ PCI_PRODUCT_ATI_RADEON_RV380_3154,	RADEON_RV380, RFB_MOB },
    354 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E50,	RADEON_RV380, 0 },
    355 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E54,	RADEON_RV380, 0 },
    356 	{ PCI_PRODUCT_ATI_RADEON_RV370_5460,	RADEON_RV380, RFB_MOB },
    357 	{ PCI_PRODUCT_ATI_RADEON_RV370_5464,	RADEON_RV380, RFB_MOB },
    358 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B60,	RADEON_RV380, 0 },
    359 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B63,	RADEON_RV380, 0 },
    360 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B64,	RADEON_RV380, 0 },
    361 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B65,	RADEON_RV380, 0 },
    362 
    363 #if notyet
    364 	/* R420/R423 family */
    365 	{ PCI_PRODUCT_ATI_RADEON_R420_JH,	RADEON_R420, 0 },
    366 	{ PCI_PRODUCT_ATI_RADEON_R420_JI,	RADEON_R420, 0 },
    367 	{ PCI_PRODUCT_ATI_RADEON_R420_JJ,	RADEON_R420, 0 },
    368 	{ PCI_PRODUCT_ATI_RADEON_R420_JK,	RADEON_R420, 0 },
    369 	{ PCI_PRODUCT_ATI_RADEON_R420_JL,	RADEON_R420, 0 },
    370 	{ PCI_PRODUCT_ATI_RADEON_R420_JM,	RADEON_R420, 0 },
    371 	{ PCI_PRODUCT_ATI_RADEON_R420_JN,	RADEON_R420, RFB_MOB },
    372 	{ PCI_PRODUCT_ATI_RADEON_R420_JP,	RADEON_R420, 0 },
    373 	{ PCI_PRODUCT_ATI_RADEON_R423_UH,	RADEON_R420, 0 },
    374 	{ PCI_PRODUCT_ATI_RADEON_R423_UI,	RADEON_R420, 0 },
    375 	{ PCI_PRODUCT_ATI_RADEON_R423_UJ,	RADEON_R420, 0 },
    376 	{ PCI_PRODUCT_ATI_RADEON_R423_UK,	RADEON_R420, 0 },
    377 	{ PCI_PRODUCT_ATI_RADEON_R423_UQ,	RADEON_R420, 0 },
    378 	{ PCI_PRODUCT_ATI_RADEON_R423_UR,	RADEON_R420, 0 },
    379 	{ PCI_PRODUCT_ATI_RADEON_R423_UT,	RADEON_R420, 0 },
    380 	{ PCI_PRODUCT_ATI_RADEON_R423_5D57,	RADEON_R420, 0 },
    381 	{ PCI_PRODUCT_ATI_RADEON_R430_554F,	RADEON_R420, 0 },
    382 
    383 	/* R5xx family */
    384 	{ 0x7240,	RADEON_R420, 0 },
    385 #endif
    386 	{ 0, 0, 0 }
    387 };
    388 
    389 static struct {
    390 	int divider;
    391 	int mask;
    392 } radeonfb_dividers[] = {
    393 	{ 16, 5 },
    394 	{ 12, 7 },
    395 	{  8, 3 },
    396 	{  6, 6 },
    397 	{  4, 2 },
    398 	{  3, 4 },
    399 	{  2, 1 },
    400 	{  1, 0 },
    401 	{  0, 0 }
    402 };
    403 
    404 /*
    405  * This table taken from X11.
    406  */
    407 static const struct {
    408 	int			family;
    409 	struct radeon_tmds_pll	plls[4];
    410 } radeonfb_tmds_pll[] = {
    411 	{ RADEON_R100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    412 	{ RADEON_RV100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    413 	{ RADEON_RS100, {{0, 0}}},
    414 	{ RADEON_RV200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    415 	{ RADEON_RS200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    416 	{ RADEON_R200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    417 	{ RADEON_RV250,	{{15500, 0x81b}, {-1, 0x83f}}},
    418 	{ RADEON_RS300, {{0, 0}}},
    419 	{ RADEON_RV280,	{{13000, 0x400f4}, {15000, 0x400f7}, {-1, 0x40111}}},
    420 	{ RADEON_R300,	{{-1, 0xb01cb}}},
    421 	{ RADEON_R350,	{{-1, 0xb01cb}}},
    422 	{ RADEON_RV350,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    423 	{ RADEON_RV380,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    424 	{ RADEON_R420,	{{-1, 0xb01cb}}},
    425 };
    426 
    427 #define RADEONFB_BACKLIGHT_MAX    255  /* Maximum backlight level. */
    428 
    429 
    430 CFATTACH_DECL_NEW(radeonfb, sizeof (struct radeonfb_softc),
    431     radeonfb_match, radeonfb_attach, NULL, NULL);
    432 
    433 static int
    434 radeonfb_match(device_t parent, cfdata_t match, void *aux)
    435 {
    436 	const struct pci_attach_args	*pa = aux;
    437 	int			i;
    438 
    439 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_ATI)
    440 		return 0;
    441 
    442 	for (i = 0; radeonfb_devices[i].devid; i++) {
    443 		if (PCI_PRODUCT(pa->pa_id) == radeonfb_devices[i].devid)
    444 			return 100;	/* high to defeat VGA/VESA */
    445 	}
    446 
    447 	return 0;
    448 }
    449 
    450 static void
    451 radeonfb_attach(device_t parent, device_t dev, void *aux)
    452 {
    453 	struct radeonfb_softc	*sc = device_private(dev);
    454 	const struct pci_attach_args	*pa = aux;
    455 	const char		*mptr;
    456 	bus_size_t		bsz;
    457 	pcireg_t		screg;
    458 	int			i, j, fg, bg, ul, flags;
    459 	uint32_t		v;
    460 
    461 	sc->sc_dev = dev;
    462 	sc->sc_id = pa->pa_id;
    463 	for (i = 0; radeonfb_devices[i].devid; i++) {
    464 		if (PCI_PRODUCT(sc->sc_id) == radeonfb_devices[i].devid)
    465 			break;
    466 	}
    467 
    468 	pci_aprint_devinfo(pa, NULL);
    469 
    470 	DPRINTF(("%s", prop_dictionary_externalize(device_properties(dev))));
    471 
    472 	KASSERT(radeonfb_devices[i].devid != 0);
    473 	sc->sc_pt = pa->pa_tag;
    474 	sc->sc_iot = pa->pa_iot;
    475 	sc->sc_pc = pa->pa_pc;
    476 	sc->sc_family = radeonfb_devices[i].family;
    477 	sc->sc_flags = radeonfb_devices[i].flags;
    478 
    479 	/* enable memory and IO access */
    480 	screg = pci_conf_read(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG);
    481 	screg |= PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE;
    482 	pci_conf_write(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG, screg);
    483 
    484 	/*
    485 	 * Some flags are general to entire chip families, and rather
    486 	 * than clutter up the table with them, we go ahead and set
    487 	 * them here.
    488 	 */
    489 	switch (sc->sc_family) {
    490 	case RADEON_RS100:
    491 	case RADEON_RS200:
    492 		sc->sc_flags |= RFB_IGP | RFB_RV100;
    493 		break;
    494 
    495 	case RADEON_RV100:
    496 	case RADEON_RV200:
    497 	case RADEON_RV250:
    498 	case RADEON_RV280:
    499 		sc->sc_flags |= RFB_RV100;
    500 		break;
    501 
    502 	case RADEON_RS300:
    503 		sc->sc_flags |= RFB_SDAC | RFB_IGP | RFB_RV100;
    504 		break;
    505 
    506 	case RADEON_R300:
    507 	case RADEON_RV350:
    508 	case RADEON_R350:
    509 	case RADEON_RV380:
    510 	case RADEON_R420:
    511 		/* newer chips */
    512 		sc->sc_flags |= RFB_R300;
    513 		break;
    514 
    515 	case RADEON_R100:
    516 		sc->sc_flags |= RFB_NCRTC2;
    517 		break;
    518 	}
    519 
    520 	if ((sc->sc_family == RADEON_RV200) ||
    521 	    (sc->sc_family == RADEON_RV250) ||
    522 	    (sc->sc_family == RADEON_RV280) ||
    523 	    (sc->sc_family == RADEON_RV350)) {
    524 		bool inverted = 0;
    525 		/* backlight level is linear */
    526 		DPRINTF(("found RV* chip, backlight is supposedly linear\n"));
    527 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
    528 		    "backlight_level_reverted", &inverted);
    529 		if (inverted) {
    530 			DPRINTF(("nope, it's inverted\n"));
    531 			sc->sc_flags |= RFB_INV_BLIGHT;
    532 		}
    533 	} else
    534 		sc->sc_flags |= RFB_INV_BLIGHT;
    535 
    536 	/*
    537 	 * XXX: to support true multihead, this must change.
    538 	 */
    539 	sc->sc_ndisplays = 1;
    540 
    541 	/* XXX: */
    542 	if (!HAS_CRTC2(sc)) {
    543 		sc->sc_ndisplays = 1;
    544 	}
    545 
    546 	if (pci_mapreg_map(pa, RADEON_MAPREG_MMIO, PCI_MAPREG_TYPE_MEM,	0,
    547 		&sc->sc_regt, &sc->sc_regh, &sc->sc_regaddr,
    548 		&sc->sc_regsz) != 0) {
    549 		aprint_error("%s: unable to map registers!\n", XNAME(sc));
    550 		goto error;
    551 	}
    552 
    553 	if (pci_mapreg_info(sc->sc_pc, sc->sc_pt, PCI_MAPREG_ROM,
    554 	     PCI_MAPREG_TYPE_ROM, &sc->sc_romaddr, &sc->sc_romsz, &flags) != 0)
    555 	{
    556 		aprint_error("%s: unable to find ROM!\n", XNAME(sc));
    557 		goto error;
    558 	}
    559 	sc->sc_romt = sc->sc_memt;
    560 
    561 	sc->sc_mapped = TRUE;
    562 
    563 	/* scratch register test... */
    564 	if (radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0x55555555) ||
    565 	    radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0xaaaaaaaa)) {
    566 		aprint_error("%s: scratch register test failed!\n", XNAME(sc));
    567 		goto error;
    568 	}
    569 
    570 	PRINTREG(RADEON_CRTC_EXT_CNTL);
    571 	PRINTREG(RADEON_CRTC_GEN_CNTL);
    572 	PRINTREG(RADEON_CRTC2_GEN_CNTL);
    573 	PRINTREG(RADEON_DISP_OUTPUT_CNTL);
    574 	PRINTREG(RADEON_DAC_CNTL2);
    575 	PRINTREG(RADEON_BIOS_4_SCRATCH);
    576 	PRINTREG(RADEON_FP_GEN_CNTL);
    577 	sc->sc_fp_gen_cntl = GET32(sc, RADEON_FP_GEN_CNTL);
    578 	PRINTREG(RADEON_FP2_GEN_CNTL);
    579 	PRINTREG(RADEON_TMDS_CNTL);
    580 	PRINTREG(RADEON_TMDS_TRANSMITTER_CNTL);
    581 	PRINTREG(RADEON_TMDS_PLL_CNTL);
    582 	PRINTREG(RADEON_LVDS_GEN_CNTL);
    583 	PRINTREG(RADEON_FP_HORZ_STRETCH);
    584 	PRINTREG(RADEON_FP_VERT_STRETCH);
    585 	PRINTREG(RADEON_DISP_HW_DEBUG);
    586 	if (IS_RV100(sc))
    587 		PUT32(sc, RADEON_TMDS_PLL_CNTL, 0xa27);
    588 
    589 	/* XXX
    590 	 * according to xf86-video-radeon R3xx has this bit backwards
    591 	 */
    592 	if (IS_R300(sc)) {
    593 		PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    594 		    0,
    595 		    ~(RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST));
    596 	} else {
    597 		PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    598 		    RADEON_TMDS_TRANSMITTER_PLLEN,
    599 		    ~(RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST));
    600 	}
    601 
    602 	radeonfb_i2c_init(sc);
    603 
    604 	radeonfb_loadbios(sc, pa);
    605 
    606 #ifdef	RADEONFB_BIOS_INIT
    607 	if (radeonfb_bios_init(sc)) {
    608 		aprint_error("%s: BIOS inititialization failed\n", XNAME(sc));
    609 	}
    610 #endif
    611 
    612 	if (radeonfb_getclocks(sc)) {
    613 		aprint_error("%s: Unable to get reference clocks from BIOS\n",
    614 		    XNAME(sc));
    615 		goto error;
    616 	}
    617 
    618 	if (radeonfb_gettmds(sc)) {
    619 		aprint_error("%s: Unable to identify TMDS PLL settings\n",
    620 		    XNAME(sc));
    621 		goto error;
    622 	}
    623 
    624 	aprint_verbose("%s: refclk = %d.%03d MHz, refdiv = %d "
    625 	    "minpll = %d, maxpll = %d\n", XNAME(sc),
    626 	    (int)sc->sc_refclk / 1000, (int)sc->sc_refclk % 1000,
    627 	    (int)sc->sc_refdiv, (int)sc->sc_minpll, (int)sc->sc_maxpll);
    628 
    629 	radeonfb_getconnectors(sc);
    630 
    631 	radeonfb_set_fbloc(sc);
    632 
    633 	/* 64 MB should be enough -- more just wastes map entries */
    634 	if (sc->sc_memsz > (64 << 20))
    635 		sc->sc_memsz = (64 << 20);
    636 
    637 	for (i = 0; radeonfb_limits[i].size; i++) {
    638 		if (sc->sc_memsz >= radeonfb_limits[i].size) {
    639 			sc->sc_maxx = radeonfb_limits[i].maxx;
    640 			sc->sc_maxy = radeonfb_limits[i].maxy;
    641 			sc->sc_maxbpp = radeonfb_limits[i].maxbpp;
    642 			/* framebuffer offset, start at a 4K page */
    643 			sc->sc_fboffset = sc->sc_memsz /
    644 			    radeonfb_limits[i].maxdisp;
    645 			/*
    646 			 * we use the fbsize to figure out where we can store
    647 			 * things like cursor data.
    648 			 */
    649 			sc->sc_fbsize =
    650 			    ROUNDUP(ROUNDUP(sc->sc_maxx * sc->sc_maxbpp / 8 ,
    651 					RADEON_STRIDEALIGN) * sc->sc_maxy,
    652 				4096);
    653 			break;
    654 		}
    655 	}
    656 
    657 
    658 	radeonfb_init_misc(sc);
    659 
    660 	/* program the DAC wirings */
    661 	for (i = 0; i < (HAS_CRTC2(sc) ? 2 : 1); i++) {
    662 		switch (sc->sc_ports[i].rp_dac_type) {
    663 		case RADEON_DAC_PRIMARY:
    664 			PATCH32(sc, RADEON_DAC_CNTL2,
    665 			    i ? RADEON_DAC2_DAC_CLK_SEL : 0,
    666 			    ~RADEON_DAC2_DAC_CLK_SEL);
    667 			break;
    668 		case RADEON_DAC_TVDAC:
    669 			/* we always use the TVDAC to drive a secondary analog
    670 			 * CRT for now.  if we ever support TV-out this will
    671 			 * have to change.
    672 			 */
    673 			SET32(sc, RADEON_DAC_CNTL2,
    674 			    RADEON_DAC2_DAC2_CLK_SEL);
    675 			PATCH32(sc, RADEON_DISP_HW_DEBUG,
    676 			    i ? 0 : RADEON_CRT2_DISP1_SEL,
    677 			    ~RADEON_CRT2_DISP1_SEL);
    678 			/* we're using CRTC2 for the 2nd port */
    679 			if (sc->sc_ports[i].rp_number == 1) {
    680 				PATCH32(sc, RADEON_DISP_OUTPUT_CNTL,
    681 				    RADEON_DISP_DAC2_SOURCE_CRTC2,
    682 				    ~RADEON_DISP_DAC2_SOURCE_MASK);
    683 			}
    684 
    685 			break;
    686 		}
    687 		DPRINTF(("%s: port %d tmds type %d\n", __func__, i,
    688 		    sc->sc_ports[i].rp_tmds_type));
    689 		switch (sc->sc_ports[i].rp_tmds_type) {
    690 		case RADEON_TMDS_INT:
    691 			/* point FP0 at the CRTC this port uses */
    692 			DPRINTF(("%s: plugging internal TMDS into CRTC %d\n",
    693 			    __func__, sc->sc_ports[i].rp_number));
    694 			if (IS_R300(sc)) {
    695 				PATCH32(sc, RADEON_FP_GEN_CNTL,
    696 				    sc->sc_ports[i].rp_number ?
    697 				      R200_FP_SOURCE_SEL_CRTC2 :
    698 				      R200_FP_SOURCE_SEL_CRTC1,
    699 				    ~R200_FP_SOURCE_SEL_MASK);
    700 			} else {
    701 				PATCH32(sc, RADEON_FP_GEN_CNTL,
    702 				    sc->sc_ports[i].rp_number ?
    703 				      RADEON_FP_SEL_CRTC2 :
    704 				      RADEON_FP_SEL_CRTC1,
    705 				    ~RADEON_FP_SEL_MASK);
    706 			}
    707 		case RADEON_TMDS_EXT:
    708 			/* point FP2 at the CRTC this port uses */
    709 			DPRINTF(("%s: plugging external TMDS into CRTC %d\n",
    710 			    __func__, sc->sc_ports[i].rp_number));
    711 			if (IS_R300(sc)) {
    712 				PATCH32(sc, RADEON_FP2_GEN_CNTL,
    713 				    sc->sc_ports[i].rp_number ?
    714 				      R200_FP2_SOURCE_SEL_CRTC2 :
    715 				      R200_FP2_SOURCE_SEL_CRTC1,
    716 				    ~R200_FP2_SOURCE_SEL_CRTC2);
    717 			} else {
    718 				PATCH32(sc, RADEON_FP2_GEN_CNTL,
    719 				    sc->sc_ports[i].rp_number ?
    720 				      RADEON_FP2_SRC_SEL_CRTC2 :
    721 				      RADEON_FP2_SRC_SEL_CRTC1,
    722 				    ~RADEON_FP2_SRC_SEL_CRTC2);
    723 			}
    724 		}
    725 	}
    726 	PRINTREG(RADEON_DAC_CNTL2);
    727 	PRINTREG(RADEON_DISP_HW_DEBUG);
    728 
    729 	PRINTREG(RADEON_DAC_CNTL);
    730 	/* other DAC programming */
    731 	v = GET32(sc, RADEON_DAC_CNTL);
    732 	v &= (RADEON_DAC_RANGE_CNTL_MASK | RADEON_DAC_BLANKING);
    733 	v |= RADEON_DAC_MASK_ALL | RADEON_DAC_8BIT_EN;
    734 	PUT32(sc, RADEON_DAC_CNTL, v);
    735 	PRINTREG(RADEON_DAC_CNTL);
    736 
    737 	/* XXX: this may need more investigation */
    738 	PUT32(sc, RADEON_TV_DAC_CNTL, 0x00280203);
    739 	PRINTREG(RADEON_TV_DAC_CNTL);
    740 
    741 	/* enable TMDS */
    742 	SET32(sc, RADEON_FP_GEN_CNTL,
    743 	    RADEON_FP_TMDS_EN |
    744 		RADEON_FP_CRTC_DONT_SHADOW_VPAR |
    745 		RADEON_FP_CRTC_DONT_SHADOW_HEND);
    746 	/*
    747 	 * XXX
    748 	 * no idea why this is necessary - if I do not clear this bit on my
    749 	 * iBook G4 the screen remains black, even though it's already clear.
    750 	 * It needs to be set on my Sun XVR-100 for the DVI port to work
    751 	 * TODO:
    752 	 * see if this is still necessary now that CRTCs, DACs and outputs are
    753 	 * getting wired up in a halfway sane way
    754 	 */
    755 	if (sc->sc_fp_gen_cntl & RADEON_FP_SEL_CRTC2) {
    756 		SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    757 	} else {
    758 		CLR32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    759 	}
    760 
    761 	/*
    762 	 * we use bus_space_map instead of pci_mapreg, because we don't
    763 	 * need the full aperature space.  no point in wasting virtual
    764 	 * address space we don't intend to use, right?
    765 	 */
    766 	if ((sc->sc_memsz < (4096 * 1024)) ||
    767 	    (pci_mapreg_info(sc->sc_pc, sc->sc_pt, RADEON_MAPREG_VRAM,
    768 		PCI_MAPREG_TYPE_MEM, &sc->sc_memaddr, &bsz, NULL) != 0) ||
    769 	    (bsz < sc->sc_memsz)) {
    770 		sc->sc_memsz = 0;
    771 		aprint_error("%s: Bad frame buffer configuration\n",
    772 		    XNAME(sc));
    773 		goto error;
    774 	}
    775 
    776 	sc->sc_memt = pa->pa_memt;
    777 	if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
    778 		BUS_SPACE_MAP_LINEAR, &sc->sc_memh) != 0) {
    779 		sc->sc_memsz = 0;
    780 		aprint_error("%s: Unable to map frame buffer\n", XNAME(sc));
    781 		goto error;
    782 	}
    783 
    784 	aprint_normal("%s: %d MB aperture at 0x%08x, "
    785 	    "%d KB registers at 0x%08x\n", XNAME(sc),
    786 	    (int)sc->sc_memsz >> 20, (unsigned)sc->sc_memaddr,
    787 	    (int)sc->sc_regsz >> 10, (unsigned)sc->sc_regaddr);
    788 
    789 	/* setup default video mode from devprop (allows PROM override) */
    790 	sc->sc_defaultmode = radeonfb_default_mode;
    791 	if (prop_dictionary_get_cstring_nocopy(device_properties(sc->sc_dev),
    792 	    "videomode", &mptr)) {
    793 
    794 		strncpy(sc->sc_modebuf, mptr, sizeof(sc->sc_modebuf));
    795 		sc->sc_defaultmode = sc->sc_modebuf;
    796 	}
    797 
    798 	/* initialize some basic display parameters */
    799 	for (i = 0; i < sc->sc_ndisplays; i++) {
    800 		struct radeonfb_display *dp = &sc->sc_displays[i];
    801 		struct rasops_info *ri;
    802 		long defattr;
    803 		struct wsemuldisplaydev_attach_args aa;
    804 
    805 		/*
    806 		 * Figure out how many "displays" (desktops) we are going to
    807 		 * support.  If more than one, then each CRTC gets its own
    808 		 * programming.
    809 		 *
    810 		 * XXX: this code needs to change to support mergedfb.
    811 		 * XXX: would be nice to allow this to be overridden
    812 		 */
    813 		if (HAS_CRTC2(sc) && (sc->sc_ndisplays == 1)) {
    814 			DPRINTF(("dual crtcs!\n"));
    815 			dp->rd_ncrtcs = 2;
    816 			dp->rd_crtcs[0].rc_port =
    817 			    &sc->sc_ports[0];
    818 			dp->rd_crtcs[0].rc_number = sc->sc_ports[0].rp_number;
    819 			dp->rd_crtcs[1].rc_port =
    820 			    &sc->sc_ports[1];
    821 			dp->rd_crtcs[1].rc_number = sc->sc_ports[1].rp_number;
    822 		} else {
    823 			dp->rd_ncrtcs = 1;
    824 			dp->rd_crtcs[0].rc_port =
    825 			    &sc->sc_ports[i];
    826 			dp->rd_crtcs[0].rc_number = sc->sc_ports[i].rp_number;
    827 		}
    828 
    829 		dp->rd_softc = sc;
    830 		dp->rd_wsmode = WSDISPLAYIO_MODE_EMUL;
    831 		dp->rd_bpp = RADEONFB_DEFAULT_DEPTH;	/* XXX */
    832 
    833 		/* for text mode, we pick a resolution that won't
    834 		 * require panning */
    835 		radeonfb_pickres(dp, &dp->rd_virtx, &dp->rd_virty, 0);
    836 
    837 		aprint_normal("%s: display %d: "
    838 		    "initial virtual resolution %dx%d at %d bpp\n",
    839 		    XNAME(sc), i, dp->rd_virtx, dp->rd_virty, dp->rd_bpp);
    840 		aprint_normal_dev(sc->sc_dev, "using %d MB per display\n",
    841 		    sc->sc_fboffset >> 20);
    842 		/* now select the *video mode* that we will use */
    843 		for (j = 0; j < dp->rd_ncrtcs; j++) {
    844 			const struct videomode *vmp;
    845 			vmp = radeonfb_port_mode(sc, dp->rd_crtcs[j].rc_port,
    846 			    dp->rd_virtx, dp->rd_virty);
    847 
    848 			/*
    849 			 * virtual resolution should be at least as high as
    850 			 * physical
    851 			 */
    852 			if (dp->rd_virtx < vmp->hdisplay ||
    853 			    dp->rd_virty < vmp->vdisplay) {
    854 				dp->rd_virtx = vmp->hdisplay;
    855 				dp->rd_virty = vmp->vdisplay;
    856 			}
    857 
    858 			dp->rd_crtcs[j].rc_videomode = *vmp;
    859 			printf("%s: port %d: physical %dx%d %dHz\n",
    860 			    XNAME(sc), j, vmp->hdisplay, vmp->vdisplay,
    861 			    DIVIDE(DIVIDE(vmp->dot_clock * 1000,
    862 				       vmp->htotal), vmp->vtotal));
    863 		}
    864 
    865 		/* N.B.: radeon wants 64-byte aligned stride */
    866 		dp->rd_stride = dp->rd_virtx * dp->rd_bpp / 8;
    867 		dp->rd_stride = ROUNDUP(dp->rd_stride, RADEON_STRIDEALIGN);
    868 		DPRINTF(("stride: %d\n", dp->rd_stride));
    869 
    870 		dp->rd_offset = sc->sc_fboffset * i;
    871 		dp->rd_fbptr = (vaddr_t)bus_space_vaddr(sc->sc_memt,
    872 		    sc->sc_memh) + dp->rd_offset;
    873 		dp->rd_curoff = sc->sc_fboffset - 4096;	/* 4KB cursor space */
    874 		dp->rd_curptr = dp->rd_fbptr + dp->rd_curoff;
    875 
    876 		DPRINTF(("fpbtr = %p\n", (void *)dp->rd_fbptr));
    877 
    878 		switch (dp->rd_bpp) {
    879 		case 8:
    880 			dp->rd_format = 2;
    881 			break;
    882 		case 32:
    883 			dp->rd_format = 6;
    884 			break;
    885 		default:
    886 			aprint_error("%s: bad depth %d\n", XNAME(sc),
    887 			    dp->rd_bpp);
    888 			goto error;
    889 		}
    890 
    891 		DPRINTF(("init engine\n"));
    892 		/* XXX: this seems suspicious - per display engine
    893 		   initialization? */
    894 		radeonfb_engine_init(dp);
    895 
    896 		/* copy the template into place */
    897 		dp->rd_wsscreens_storage[0] = radeonfb_stdscreen;
    898 		dp->rd_wsscreens = dp->rd_wsscreens_storage;
    899 
    900 		/* and make up the list */
    901 		dp->rd_wsscreenlist.nscreens = 1;
    902 		dp->rd_wsscreenlist.screens = (void *)&dp->rd_wsscreens;
    903 
    904 		vcons_init(&dp->rd_vd, dp, dp->rd_wsscreens,
    905 		    &radeonfb_accessops);
    906 
    907 		dp->rd_vd.init_screen = radeonfb_init_screen;
    908 
    909 #ifdef RADEONFB_DEBUG
    910 		dp->rd_virty -= 200;
    911 #endif
    912 
    913 		dp->rd_console = 0;
    914 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
    915 		    "is_console", &dp->rd_console);
    916 
    917 		dp->rd_vscreen.scr_flags |= VCONS_SCREEN_IS_STATIC;
    918 
    919 
    920 		vcons_init_screen(&dp->rd_vd, &dp->rd_vscreen,
    921 		    dp->rd_console, &defattr);
    922 
    923 		ri = &dp->rd_vscreen.scr_ri;
    924 
    925 		/* clear the screen */
    926 		rasops_unpack_attr(defattr, &fg, &bg, &ul);
    927 		dp->rd_bg = ri->ri_devcmap[bg & 0xf];
    928 		radeonfb_rectfill(dp, 0, 0, ri->ri_width, ri->ri_height,
    929 		    dp->rd_bg);
    930 
    931 		dp->rd_wsscreens->textops = &ri->ri_ops;
    932 		dp->rd_wsscreens->capabilities = ri->ri_caps;
    933 		dp->rd_wsscreens->nrows = ri->ri_rows;
    934 		dp->rd_wsscreens->ncols = ri->ri_cols;
    935 
    936 #ifdef SPLASHSCREEN
    937 		dp->rd_splash.si_depth = ri->ri_depth;
    938 		dp->rd_splash.si_bits = ri->ri_bits;
    939 		dp->rd_splash.si_hwbits = ri->ri_hwbits;
    940 		dp->rd_splash.si_width = ri->ri_width;
    941 		dp->rd_splash.si_height = ri->ri_height;
    942 		dp->rd_splash.si_stride = ri->ri_stride;
    943 		dp->rd_splash.si_fillrect = NULL;
    944 #endif
    945 		dp->rd_gc.gc_bitblt = radeonfb_bitblt;
    946 		dp->rd_gc.gc_rectfill = radeonfb_rectfill_a;
    947 		dp->rd_gc.gc_rop = RADEON_ROP3_S;
    948 		dp->rd_gc.gc_blitcookie = dp;
    949 		/*
    950 		 * use memory between framebuffer and cursor area as glyph
    951 		 * cache, cap at 4096 lines
    952 		 */
    953 		glyphcache_init(&dp->rd_gc, dp->rd_virty + 4,
    954 		    min(4096,
    955 		        (dp->rd_curoff / dp->rd_stride) - (dp->rd_virty + 4)),
    956 		    dp->rd_virtx,
    957 		    ri->ri_font->fontwidth,
    958 		    ri->ri_font->fontheight,
    959 		    defattr);
    960 		dp->rd_vd.show_screen_cookie = &dp->rd_gc;
    961 		dp->rd_vd.show_screen_cb = glyphcache_adapt;
    962 
    963 		if (dp->rd_console) {
    964 
    965 			radeonfb_modeswitch(dp);
    966 			wsdisplay_cnattach(dp->rd_wsscreens, ri, 0, 0,
    967 			    defattr);
    968 #ifdef SPLASHSCREEN
    969 			if (splash_render(&dp->rd_splash,
    970 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
    971 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    972 			else
    973 #endif
    974 				vcons_replay_msgbuf(&dp->rd_vscreen);
    975 		} else {
    976 
    977 			/*
    978 			 * since we're not the console we can postpone
    979 			 * the rest until someone actually allocates a
    980 			 * screen for us.  but we do clear the screen
    981 			 * at least.
    982 			 */
    983 			memset(ri->ri_bits, 0, 1024);
    984 
    985 			radeonfb_modeswitch(dp);
    986 #ifdef SPLASHSCREEN
    987 			if (splash_render(&dp->rd_splash,
    988 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
    989 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    990 #endif
    991 		}
    992 
    993 		aa.console = dp->rd_console;
    994 		aa.scrdata = &dp->rd_wsscreenlist;
    995 		aa.accessops = &radeonfb_accessops;
    996 		aa.accesscookie = &dp->rd_vd;
    997 
    998 		config_found(sc->sc_dev, &aa, wsemuldisplaydevprint);
    999 
   1000 		radeonfb_blank(dp, 0);
   1001 
   1002 		/* Initialise delayed lvds operations for backlight. */
   1003 		callout_init(&dp->rd_bl_lvds_co, 0);
   1004 		callout_setfunc(&dp->rd_bl_lvds_co,
   1005 				radeonfb_lvds_callout, dp);
   1006 		dp->rd_bl_on = 1;
   1007 		dp->rd_bl_level = radeonfb_get_backlight(dp);
   1008 		radeonfb_set_backlight(dp, dp->rd_bl_level);
   1009 	}
   1010 
   1011 	for (i = 0; i < RADEON_NDISPLAYS; i++)
   1012 		radeonfb_init_palette(&sc->sc_displays[i]);
   1013 
   1014 	if (HAS_CRTC2(sc)) {
   1015 		CLR32(sc, RADEON_CRTC2_GEN_CNTL, RADEON_CRTC2_DISP_DIS);
   1016 	}
   1017 
   1018 	CLR32(sc, RADEON_CRTC_EXT_CNTL, RADEON_CRTC_DISPLAY_DIS);
   1019 	SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_FPON);
   1020 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_UP,
   1021 	    radeonfb_brightness_up, TRUE);
   1022 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_DOWN,
   1023 	    radeonfb_brightness_down, TRUE);
   1024 
   1025 	/*
   1026 	 * if we attach a DRM we need to unmap registers in
   1027 	 * WSDISPLAYIO_MODE_MAPPED, since this keeps us from doing things like
   1028 	 * screen blanking we only do it if needed
   1029 	 */
   1030 	sc->sc_needs_unmap =
   1031 	    (config_found_ia(dev, "drm", aux, radeonfb_drm_print) != 0);
   1032 	DPRINTF(("needs_unmap: %d\n", sc->sc_needs_unmap));
   1033 
   1034 	PRINTREG(RADEON_CRTC_EXT_CNTL);
   1035 	PRINTREG(RADEON_CRTC_GEN_CNTL);
   1036 	PRINTREG(RADEON_CRTC2_GEN_CNTL);
   1037 	PRINTREG(RADEON_DISP_OUTPUT_CNTL);
   1038 	PRINTREG(RADEON_DAC_CNTL2);
   1039 	PRINTREG(RADEON_FP_GEN_CNTL);
   1040 	PRINTREG(RADEON_FP2_GEN_CNTL);
   1041 	PRINTREG(RADEON_TMDS_CNTL);
   1042 	PRINTREG(RADEON_TMDS_TRANSMITTER_CNTL);
   1043 	PRINTREG(RADEON_TMDS_PLL_CNTL);
   1044 
   1045 	return;
   1046 
   1047 error:
   1048 	if (sc->sc_biossz)
   1049 		free(sc->sc_bios, M_DEVBUF);
   1050 
   1051 	if (sc->sc_regsz)
   1052 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
   1053 
   1054 	if (sc->sc_memsz)
   1055 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
   1056 }
   1057 
   1058 static void
   1059 radeonfb_map(struct radeonfb_softc *sc)
   1060 {
   1061 	if (!sc->sc_mapped) {
   1062 		if (bus_space_map(sc->sc_regt, sc->sc_regaddr, sc->sc_regsz, 0,
   1063 		    &sc->sc_regh) != 0) {
   1064 			aprint_error_dev(sc->sc_dev,
   1065 			    "unable to map registers!\n");
   1066 			return;
   1067 		}
   1068 		if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
   1069 		    BUS_SPACE_MAP_LINEAR, &sc->sc_memh) != 0) {
   1070 			sc->sc_memsz = 0;
   1071 			aprint_error_dev(sc->sc_dev,
   1072 			    "Unable to map frame buffer\n");
   1073 			return;
   1074 		}
   1075 		sc->sc_mapped = TRUE;
   1076 	}
   1077 }
   1078 
   1079 static void
   1080 radeonfb_unmap(struct radeonfb_softc *sc)
   1081 {
   1082 	if (!sc->sc_needs_unmap)
   1083 		return;
   1084 
   1085 	if (sc->sc_mapped) {
   1086 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
   1087 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
   1088 		sc->sc_mapped = FALSE;
   1089 	}
   1090 }
   1091 
   1092 static int
   1093 radeonfb_drm_print(void *aux, const char *pnp)
   1094 {
   1095 	if (pnp)
   1096 		aprint_normal("drm at %s", pnp);
   1097 	return (UNCONF);
   1098 }
   1099 
   1100 int
   1101 radeonfb_ioctl(void *v, void *vs,
   1102     unsigned long cmd, void *d, int flag, struct lwp *l)
   1103 {
   1104 	struct vcons_data	*vd;
   1105 	struct radeonfb_display	*dp;
   1106 	struct radeonfb_softc	*sc;
   1107 	struct wsdisplay_param  *param;
   1108 	struct vcons_screen 	*ms;
   1109 
   1110 	vd = (struct vcons_data *)v;
   1111 	ms = vd->active;
   1112 	dp = (struct radeonfb_display *)vd->cookie;
   1113 	sc = dp->rd_softc;
   1114 
   1115 	/* can't do these without registers being mapped */
   1116 	if (!sc->sc_mapped) {
   1117 		switch (cmd) {
   1118 			case WSDISPLAYIO_GVIDEO:
   1119 			case WSDISPLAYIO_SVIDEO:
   1120 			case WSDISPLAYIO_GETCMAP:
   1121 			case WSDISPLAYIO_PUTCMAP:
   1122 			case WSDISPLAYIO_SCURSOR:
   1123 			case WSDISPLAYIO_GCURPOS:
   1124 			case WSDISPLAYIO_SCURPOS:
   1125 			case WSDISPLAYIO_SETPARAM:
   1126 				return EINVAL;
   1127 		}
   1128 	}
   1129 
   1130 	switch (cmd) {
   1131 	case WSDISPLAYIO_GTYPE:
   1132 		*(unsigned *)d = WSDISPLAY_TYPE_PCIMISC;
   1133 		return 0;
   1134 
   1135 	case WSDISPLAYIO_GINFO:
   1136 		if (vd->active != NULL) {
   1137 			struct wsdisplay_fbinfo *fb;
   1138 			fb = (struct wsdisplay_fbinfo *)d;
   1139 			fb->width = dp->rd_virtx;
   1140 			fb->height = dp->rd_virty;
   1141 			fb->depth = dp->rd_bpp;
   1142 			fb->cmsize = 256;
   1143 			return 0;
   1144 		} else
   1145 			return ENODEV;
   1146 	case WSDISPLAYIO_GVIDEO:
   1147 		if (radeonfb_isblank(dp))
   1148 			*(unsigned *)d = WSDISPLAYIO_VIDEO_OFF;
   1149 		else
   1150 			*(unsigned *)d = WSDISPLAYIO_VIDEO_ON;
   1151 		return 0;
   1152 
   1153 	case WSDISPLAYIO_SVIDEO:
   1154 		radeonfb_blank(dp,
   1155 		    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_OFF));
   1156 		radeonfb_switch_backlight(dp,
   1157 		    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_ON));
   1158 		return 0;
   1159 
   1160 	case WSDISPLAYIO_GETCMAP:
   1161 		if (dp->rd_bpp == 8)
   1162 			return radeonfb_getcmap(dp,
   1163 			    (struct wsdisplay_cmap *)d);
   1164 		return EINVAL;
   1165 
   1166 	case WSDISPLAYIO_PUTCMAP:
   1167 		if (dp->rd_bpp == 8)
   1168 			return radeonfb_putcmap(dp,
   1169 			    (struct wsdisplay_cmap *)d);
   1170 		return EINVAL;
   1171 
   1172 	case WSDISPLAYIO_LINEBYTES:
   1173 		*(unsigned *)d = dp->rd_stride;
   1174 		return 0;
   1175 
   1176 	case WSDISPLAYIO_SMODE:
   1177 		if (*(int *)d != dp->rd_wsmode) {
   1178 			dp->rd_wsmode = *(int *)d;
   1179 			if ((dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) ||
   1180 			    (dp->rd_wsmode == WSDISPLAYIO_MODE_DUMBFB))
   1181 				radeonfb_map(sc);
   1182 
   1183 			if ((dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) &&
   1184 			    (dp->rd_vd.active)) {
   1185 				radeonfb_engine_init(dp);
   1186 				glyphcache_wipe(&dp->rd_gc);
   1187 				radeonfb_init_palette(dp);
   1188 				radeonfb_modeswitch(dp);
   1189 				radeonfb_rectfill(dp, 0, 0, dp->rd_virtx,
   1190 				    dp->rd_virty, dp->rd_bg);
   1191 				vcons_redraw_screen(dp->rd_vd.active);
   1192 			}
   1193 			if (dp->rd_wsmode == WSDISPLAYIO_MODE_MAPPED)
   1194 				radeonfb_unmap(sc);
   1195 		}
   1196 		return 0;
   1197 
   1198 	case WSDISPLAYIO_GCURMAX:
   1199 		((struct wsdisplay_curpos *)d)->x = RADEON_CURSORMAXX;
   1200 		((struct wsdisplay_curpos *)d)->y = RADEON_CURSORMAXY;
   1201 		return 0;
   1202 
   1203 	case WSDISPLAYIO_SCURSOR:
   1204 		return radeonfb_set_cursor(dp, (struct wsdisplay_cursor *)d);
   1205 
   1206 	case WSDISPLAYIO_GCURSOR:
   1207 		return EPASSTHROUGH;
   1208 
   1209 	case WSDISPLAYIO_GCURPOS:
   1210 		((struct wsdisplay_curpos *)d)->x = dp->rd_cursor.rc_pos.x;
   1211 		((struct wsdisplay_curpos *)d)->y = dp->rd_cursor.rc_pos.y;
   1212 		return 0;
   1213 
   1214 	case WSDISPLAYIO_SCURPOS:
   1215 		return radeonfb_set_curpos(dp, (struct wsdisplay_curpos *)d);
   1216 
   1217 	case WSDISPLAYIO_SSPLASH:
   1218 #if defined(SPLASHSCREEN)
   1219 		if (*(int *)d == 1) {
   1220 			SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
   1221 			splash_render(&dp->rd_splash,
   1222 			    SPLASH_F_CENTER|SPLASH_F_FILL);
   1223 		} else
   1224 			SCREEN_ENABLE_DRAWING(&dp->rd_vscreen);
   1225 		return 0;
   1226 #else
   1227 		return ENODEV;
   1228 #endif
   1229 	case WSDISPLAYIO_GETPARAM:
   1230 		param = (struct wsdisplay_param *)d;
   1231 		switch (param->param) {
   1232 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
   1233 			param->min = 0;
   1234 			param->max = 255;
   1235 			param->curval = dp->rd_bl_level;
   1236 			return 0;
   1237 		case WSDISPLAYIO_PARAM_BACKLIGHT:
   1238 			param->min = 0;
   1239 			param->max = RADEONFB_BACKLIGHT_MAX;
   1240 			param->curval = dp->rd_bl_on;
   1241 			return 0;
   1242 		}
   1243 		return EPASSTHROUGH;
   1244 
   1245 	case WSDISPLAYIO_SETPARAM:
   1246 		param = (struct wsdisplay_param *)d;
   1247 		switch (param->param) {
   1248 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
   1249 			radeonfb_set_backlight(dp, param->curval);
   1250 			return 0;
   1251 		case WSDISPLAYIO_PARAM_BACKLIGHT:
   1252 			radeonfb_switch_backlight(dp,  param->curval);
   1253 			return 0;
   1254 		}
   1255 		return EPASSTHROUGH;
   1256 
   1257 	/* PCI config read/write passthrough. */
   1258 	case PCI_IOC_CFGREAD:
   1259 	case PCI_IOC_CFGWRITE:
   1260 		return pci_devioctl(sc->sc_pc, sc->sc_pt, cmd, d, flag, l);
   1261 
   1262 	case WSDISPLAYIO_GET_BUSID:
   1263 		return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc,
   1264 		    sc->sc_pt, d);
   1265 
   1266 	case WSDISPLAYIO_GET_EDID: {
   1267 		struct wsdisplayio_edid_info *ei = d;
   1268 		return wsdisplayio_get_edid(sc->sc_dev, ei);
   1269 	}
   1270 
   1271 	case WSDISPLAYIO_GET_FBINFO: {
   1272 		struct wsdisplayio_fbinfo *fbi = d;
   1273 		return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi);
   1274 	}
   1275 
   1276 	default:
   1277 		return EPASSTHROUGH;
   1278 	}
   1279 }
   1280 
   1281 paddr_t
   1282 radeonfb_mmap(void *v, void *vs, off_t offset, int prot)
   1283 {
   1284 	struct vcons_data	*vd;
   1285 	struct radeonfb_display	*dp;
   1286 	struct radeonfb_softc	*sc;
   1287 	paddr_t			pa;
   1288 
   1289 	vd = (struct vcons_data *)v;
   1290 	dp = (struct radeonfb_display *)vd->cookie;
   1291 	sc = dp->rd_softc;
   1292 
   1293 	if ((offset >= 0) && (offset < (dp->rd_virty * dp->rd_stride))) {
   1294 		pa = bus_space_mmap(sc->sc_memt,
   1295 		    sc->sc_memaddr + dp->rd_offset + offset, 0,
   1296 		    prot, BUS_SPACE_MAP_LINEAR);
   1297 		return pa;
   1298 	}
   1299 
   1300 	/*
   1301 	 * restrict all other mappings to processes with superuser privileges
   1302 	 * or the kernel itself
   1303 	 */
   1304 	if (kauth_authorize_machdep(kauth_cred_get(), KAUTH_MACHDEP_UNMANAGEDMEM,
   1305 	    NULL, NULL, NULL, NULL) != 0) {
   1306 		aprint_error_dev(sc->sc_dev, "mmap() rejected.\n");
   1307 		return -1;
   1308 	}
   1309 
   1310 	if ((offset >= sc->sc_regaddr) &&
   1311 	    (offset < sc->sc_regaddr + sc->sc_regsz)) {
   1312 		return bus_space_mmap(sc->sc_regt, offset, 0, prot,
   1313 		    BUS_SPACE_MAP_LINEAR);
   1314 	}
   1315 
   1316 	if ((offset >= sc->sc_memaddr) &&
   1317 	    (offset < sc->sc_memaddr + sc->sc_memsz)) {
   1318 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1319 		    BUS_SPACE_MAP_LINEAR);
   1320 	}
   1321 
   1322 	if ((offset >= sc->sc_romaddr) &&
   1323 	    (offset < sc->sc_romaddr + sc->sc_romsz)) {
   1324 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1325 		    BUS_SPACE_MAP_LINEAR);
   1326 	}
   1327 
   1328 #ifdef PCI_MAGIC_IO_RANGE
   1329 	/* allow mapping of IO space */
   1330 	if ((offset >= PCI_MAGIC_IO_RANGE) &&
   1331 	    (offset < PCI_MAGIC_IO_RANGE + 0x10000)) {
   1332 		pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE,
   1333 		    0, prot, 0);
   1334 		return pa;
   1335 	}
   1336 #endif /* PCI_MAGIC_IO_RANGE */
   1337 
   1338 	return -1;
   1339 }
   1340 
   1341 static void
   1342 radeonfb_loadbios(struct radeonfb_softc *sc, const struct pci_attach_args *pa)
   1343 {
   1344 	bus_space_tag_t		romt;
   1345 	bus_space_handle_t	romh, biosh;
   1346 	bus_size_t		romsz;
   1347 	bus_addr_t		ptr;
   1348 
   1349 	if (pci_mapreg_map(pa, PCI_MAPREG_ROM, PCI_MAPREG_TYPE_ROM,
   1350 		BUS_SPACE_MAP_PREFETCHABLE, &romt, &romh, NULL, &romsz) != 0) {
   1351 		aprint_verbose("%s: unable to map BIOS!\n", XNAME(sc));
   1352 		return;
   1353 	}
   1354 
   1355 	pci_find_rom(pa, romt, romh, romsz, PCI_ROM_CODE_TYPE_X86, &biosh,
   1356 	    &sc->sc_biossz);
   1357 	if (sc->sc_biossz == 0) {
   1358 		aprint_verbose("%s: Video BIOS not present\n", XNAME(sc));
   1359 		return;
   1360 	}
   1361 
   1362 	sc->sc_bios = malloc(sc->sc_biossz, M_DEVBUF, M_WAITOK);
   1363 	bus_space_read_region_1(romt, biosh, 0, sc->sc_bios, sc->sc_biossz);
   1364 
   1365 	/* unmap the PCI expansion rom */
   1366 	bus_space_unmap(romt, romh, romsz);
   1367 
   1368 	/* turn off rom decoder now */
   1369 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM,
   1370 	    pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM) &
   1371 	    ~PCI_MAPREG_ROM_ENABLE);
   1372 
   1373 	ptr = GETBIOS16(sc, 0x48);
   1374 	if ((GETBIOS32(sc, ptr + 4) == 0x41544f4d /* "ATOM" */) ||
   1375 	    (GETBIOS32(sc, ptr + 4) == 0x4d4f5441 /* "MOTA" */)) {
   1376 		sc->sc_flags |= RFB_ATOM;
   1377 	}
   1378 
   1379 	aprint_verbose("%s: Found %d KB %s BIOS\n", XNAME(sc),
   1380 	    (unsigned)sc->sc_biossz >> 10, IS_ATOM(sc) ? "ATOM" : "Legacy");
   1381 }
   1382 
   1383 
   1384 uint32_t
   1385 radeonfb_get32(struct radeonfb_softc *sc, uint32_t reg)
   1386 {
   1387 
   1388 	return bus_space_read_4(sc->sc_regt, sc->sc_regh, reg);
   1389 }
   1390 
   1391 void
   1392 radeonfb_put32(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1393 {
   1394 
   1395 	bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, val);
   1396 }
   1397 
   1398 void
   1399 radeonfb_put32s(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1400 {
   1401 
   1402 	bus_space_write_stream_4(sc->sc_regt, sc->sc_regh, reg, val);
   1403 }
   1404 
   1405 void
   1406 radeonfb_mask32(struct radeonfb_softc *sc, uint32_t reg,
   1407     uint32_t andmask, uint32_t ormask)
   1408 {
   1409 	int		s;
   1410 	uint32_t	val;
   1411 
   1412 	s = splhigh();
   1413 	val = radeonfb_get32(sc, reg);
   1414 	val = (val & andmask) | ormask;
   1415 	radeonfb_put32(sc, reg, val);
   1416 	splx(s);
   1417 }
   1418 
   1419 uint32_t
   1420 radeonfb_getindex(struct radeonfb_softc *sc, uint32_t idx)
   1421 {
   1422 	int		s;
   1423 	uint32_t	val;
   1424 
   1425 	s = splhigh();
   1426 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1427 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1428 	splx(s);
   1429 
   1430 	return (val);
   1431 }
   1432 
   1433 void
   1434 radeonfb_putindex(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1435 {
   1436 	int	s;
   1437 
   1438 	s = splhigh();
   1439 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1440 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1441 	splx(s);
   1442 }
   1443 
   1444 void
   1445 radeonfb_maskindex(struct radeonfb_softc *sc, uint32_t idx,
   1446     uint32_t andmask, uint32_t ormask)
   1447 {
   1448 	int		s;
   1449 	uint32_t	val;
   1450 
   1451 	s = splhigh();
   1452 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1453 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1454 	val = (val & andmask) | ormask;
   1455 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1456 	splx(s);
   1457 }
   1458 
   1459 uint32_t
   1460 radeonfb_getpll(struct radeonfb_softc *sc, uint32_t idx)
   1461 {
   1462 	int		s;
   1463 	uint32_t	val;
   1464 
   1465 	s = splhigh();
   1466 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f));
   1467 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1468 	if (HAS_R300CG(sc))
   1469 		radeonfb_r300cg_workaround(sc);
   1470 	splx(s);
   1471 
   1472 	return (val);
   1473 }
   1474 
   1475 void
   1476 radeonfb_putpll(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1477 {
   1478 	int	s;
   1479 
   1480 	s = splhigh();
   1481 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1482 	    RADEON_PLL_WR_EN);
   1483 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1484 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1485 	splx(s);
   1486 }
   1487 
   1488 void
   1489 radeonfb_maskpll(struct radeonfb_softc *sc, uint32_t idx,
   1490     uint32_t andmask, uint32_t ormask)
   1491 {
   1492 	int		s;
   1493 	uint32_t	val;
   1494 
   1495 	s = splhigh();
   1496 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1497 		RADEON_PLL_WR_EN);
   1498 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1499 	val = (val & andmask) | ormask;
   1500 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1501 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1502 	splx(s);
   1503 }
   1504 
   1505 int
   1506 radeonfb_scratch_test(struct radeonfb_softc *sc, int reg, uint32_t v)
   1507 {
   1508 	uint32_t	saved;
   1509 
   1510 	saved = GET32(sc, reg);
   1511 	PUT32(sc, reg, v);
   1512 	if (GET32(sc, reg) != v) {
   1513 		return -1;
   1514 	}
   1515 	PUT32(sc, reg, saved);
   1516 	return 0;
   1517 }
   1518 
   1519 uintmax_t
   1520 radeonfb_getprop_num(struct radeonfb_softc *sc, const char *name,
   1521     uintmax_t defval)
   1522 {
   1523 	prop_number_t	pn;
   1524 	pn = prop_dictionary_get(device_properties(sc->sc_dev), name);
   1525 	if (pn == NULL) {
   1526 		return defval;
   1527 	}
   1528 	KASSERT(prop_object_type(pn) == PROP_TYPE_NUMBER);
   1529 	return (prop_number_integer_value(pn));
   1530 }
   1531 
   1532 int
   1533 radeonfb_getclocks(struct radeonfb_softc *sc)
   1534 {
   1535 	bus_addr_t	ptr;
   1536 	int		refclk = 0;
   1537 	int		refdiv = 0;
   1538 	int		minpll = 0;
   1539 	int		maxpll = 0;
   1540 
   1541 	/* load initial property values if port/board provides them */
   1542 	refclk = radeonfb_getprop_num(sc, "refclk", 0) & 0xffff;
   1543 	refdiv = radeonfb_getprop_num(sc, "refdiv", 0) & 0xffff;
   1544 	minpll = radeonfb_getprop_num(sc, "minpll", 0) & 0xffffffffU;
   1545 	maxpll = radeonfb_getprop_num(sc, "maxpll", 0) & 0xffffffffU;
   1546 
   1547 	PRINTPLL(RADEON_PPLL_REF_DIV);
   1548 	PRINTPLL(RADEON_PPLL_DIV_0);
   1549 	PRINTPLL(RADEON_PPLL_DIV_1);
   1550 	PRINTPLL(RADEON_PPLL_DIV_2);
   1551 	PRINTPLL(RADEON_PPLL_DIV_3);
   1552 	PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   1553 	PRINTPLL(RADEON_P2PLL_REF_DIV);
   1554 	PRINTPLL(RADEON_P2PLL_DIV_0);
   1555 
   1556 	if (refclk && refdiv && minpll && maxpll)
   1557 		goto dontprobe;
   1558 
   1559 	if (!sc->sc_biossz) {
   1560 		/* no BIOS */
   1561 		aprint_verbose("%s: No video BIOS, using default clocks\n",
   1562 		    XNAME(sc));
   1563 		if (IS_IGP(sc))
   1564 			refclk = refclk ? refclk : 1432;
   1565 		else
   1566 			refclk = refclk ? refclk : 2700;
   1567 		refdiv = refdiv ? refdiv : 12;
   1568 		minpll = minpll ? minpll : 12500;
   1569 		/* XXX
   1570 		 * Need to check if the firmware or something programmed a
   1571 		 * higher value than this, and if so, bump it.
   1572 		 * The RV280 in my iBook is unhappy if the PLL input is less
   1573 		 * than 360MHz
   1574 		 */
   1575 		maxpll = maxpll ? maxpll : 40000/*35000*/;
   1576 	} else if (IS_ATOM(sc)) {
   1577 		/* ATOM BIOS */
   1578 		ptr = GETBIOS16(sc, 0x48);
   1579 		ptr = GETBIOS16(sc, ptr + 32);	/* aka MasterDataStart */
   1580 		ptr = GETBIOS16(sc, ptr + 12);	/* pll info block */
   1581 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 82);
   1582 		minpll = minpll ? minpll : GETBIOS16(sc, ptr + 78);
   1583 		maxpll = maxpll ? maxpll : GETBIOS16(sc, ptr + 32);
   1584 		/*
   1585 		 * ATOM BIOS doesn't supply a reference divider, so we
   1586 		 * have to probe for it.
   1587 		 */
   1588 		if (refdiv < 2)
   1589 			refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1590 			    RADEON_PPLL_REF_DIV_MASK;
   1591 		/*
   1592 		 * if probe is zero, just assume one that should work
   1593 		 * for most parts
   1594 		 */
   1595 		if (refdiv < 2)
   1596 			refdiv = 12;
   1597 
   1598 	} else {
   1599 		uint32_t tmp = GETPLL(sc, RADEON_PPLL_REF_DIV);
   1600 		/* Legacy BIOS */
   1601 		ptr = GETBIOS16(sc, 0x48);
   1602 		ptr = GETBIOS16(sc, ptr + 0x30);
   1603 		if (IS_R300(sc)) {
   1604 			refdiv = refdiv ? refdiv :
   1605 			    (tmp & R300_PPLL_REF_DIV_ACC_MASK) >>
   1606 			    R300_PPLL_REF_DIV_ACC_SHIFT;
   1607 		} else {
   1608 			refdiv = refdiv ? refdiv :
   1609 			    tmp & RADEON_PPLL_REF_DIV_MASK;
   1610 		}
   1611 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 0x0E);
   1612 		refdiv = refdiv ? refdiv : GETBIOS16(sc, ptr + 0x10);
   1613 		minpll = minpll ? minpll : GETBIOS32(sc, ptr + 0x12);
   1614 		maxpll = maxpll ? maxpll : GETBIOS32(sc, ptr + 0x16);
   1615 	}
   1616 
   1617 
   1618 dontprobe:
   1619 	sc->sc_refclk = refclk * 10;
   1620 	sc->sc_refdiv = refdiv;
   1621 	sc->sc_minpll = minpll * 10;
   1622 	sc->sc_maxpll = maxpll * 10;
   1623 	return 0;
   1624 }
   1625 
   1626 int
   1627 radeonfb_calc_dividers(struct radeonfb_softc *sc, uint32_t dotclock,
   1628     uint32_t *postdivbit, uint32_t *feedbackdiv)
   1629 {
   1630 	int		i;
   1631 	uint32_t	outfreq;
   1632 	int		div;
   1633 
   1634 	DPRINTF(("dot clock: %u\n", dotclock));
   1635 	for (i = 0; (div = radeonfb_dividers[i].divider) != 0; i++) {
   1636 		outfreq = div * dotclock;
   1637 		if ((outfreq >= sc->sc_minpll) &&
   1638 		    (outfreq <= sc->sc_maxpll)) {
   1639 			DPRINTF(("outfreq: %u\n", outfreq));
   1640 			*postdivbit =
   1641 			    ((uint32_t)radeonfb_dividers[i].mask << 16);
   1642 			DPRINTF(("post divider: %d (mask %x)\n", div,
   1643 				    *postdivbit));
   1644 			break;
   1645 		}
   1646 	}
   1647 
   1648 	if (div == 0)
   1649 		return 1;
   1650 
   1651 	*feedbackdiv = DIVIDE(sc->sc_refdiv * outfreq, sc->sc_refclk);
   1652 	DPRINTF(("feedback divider: %d\n", *feedbackdiv));
   1653 	return 0;
   1654 }
   1655 
   1656 #if 0
   1657 #ifdef RADEONFB_DEBUG
   1658 static void
   1659 dump_buffer(const char *pfx, void *buffer, unsigned int size)
   1660 {
   1661 	char		asc[17];
   1662 	unsigned	ptr = (unsigned)buffer;
   1663 	char		*start = (char *)(ptr & ~0xf);
   1664 	char		*end = (char *)(ptr + size);
   1665 
   1666 	end = (char *)(((unsigned)end + 0xf) & ~0xf);
   1667 
   1668 	if (pfx == NULL) {
   1669 		pfx = "";
   1670 	}
   1671 
   1672 	while (start < end) {
   1673 		unsigned offset = (unsigned)start & 0xf;
   1674 		if (offset == 0) {
   1675 			printf("%s%x: ", pfx, (unsigned)start);
   1676 		}
   1677 		if (((unsigned)start < ptr) ||
   1678 		    ((unsigned)start >= (ptr + size))) {
   1679 			printf("  ");
   1680 			asc[offset] = ' ';
   1681 		} else {
   1682 			printf("%02x", *(unsigned char *)start);
   1683 			if ((*start >= ' ') && (*start <= '~')) {
   1684 				asc[offset] = *start;
   1685 			} else {
   1686 				asc[offset] = '.';
   1687 			}
   1688 		}
   1689 		asc[offset + 1] = 0;
   1690 		if (offset % 2) {
   1691 			printf(" ");
   1692 		}
   1693 		if (offset == 15) {
   1694 			printf(" %s\n", asc);
   1695 		}
   1696 		start++;
   1697 	}
   1698 }
   1699 #endif
   1700 #endif
   1701 
   1702 int
   1703 radeonfb_getconnectors(struct radeonfb_softc *sc)
   1704 {
   1705 	int	i;
   1706 	int	found = 0;
   1707 
   1708 	for (i = 0; i < 2; i++) {
   1709 		sc->sc_ports[i].rp_mon_type = RADEON_MT_UNKNOWN;
   1710 		sc->sc_ports[i].rp_ddc_type = RADEON_DDC_NONE;
   1711 		sc->sc_ports[i].rp_dac_type = RADEON_DAC_UNKNOWN;
   1712 		sc->sc_ports[i].rp_conn_type = RADEON_CONN_NONE;
   1713 		sc->sc_ports[i].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1714 	}
   1715 
   1716 	/*
   1717 	 * This logic is borrowed from Xorg's radeon driver.
   1718 	 */
   1719 	if (!sc->sc_biossz)
   1720 		goto nobios;
   1721 
   1722 	if (IS_ATOM(sc)) {
   1723 		/* not done yet */
   1724 	} else {
   1725 		uint16_t	ptr;
   1726 		int		port = 0;
   1727 
   1728 		ptr = GETBIOS16(sc, 0x48);
   1729 		ptr = GETBIOS16(sc, ptr + 0x50);
   1730 		for (i = 1; i < 4; i++) {
   1731 			uint16_t	entry;
   1732 			uint8_t		conn, ddc, dac, tmds;
   1733 
   1734 			/*
   1735 			 * Parse the connector table.  From reading the code,
   1736 			 * it appears to made up of 16-bit entries for each
   1737 			 * connector.  The 16-bits are defined as:
   1738 			 *
   1739 			 * bits 12-15	- connector type (0 == end of table)
   1740 			 * bits 8-11	- DDC type
   1741 			 * bits 5-7	- ???
   1742 			 * bit 4	- TMDS type (1 = EXT, 0 = INT)
   1743 			 * bits 1-3	- ???
   1744 			 * bit 0	- DAC, 1 = TVDAC, 0 = primary
   1745 			 */
   1746 			if (!GETBIOS8(sc, ptr + i * 2) && i > 1)
   1747 				break;
   1748 			entry = GETBIOS16(sc, ptr + i * 2);
   1749 
   1750 			conn = (entry >> 12) & 0xf;
   1751 			ddc = (entry >> 8) & 0xf;
   1752 			dac = (entry & 0x1) ? RADEON_DAC_TVDAC :
   1753 			    RADEON_DAC_PRIMARY;
   1754 			tmds = ((entry >> 4) & 0x1) ? RADEON_TMDS_EXT :
   1755 			    RADEON_TMDS_INT;
   1756 
   1757 			if (conn == RADEON_CONN_NONE)
   1758 				continue;	/* no connector */
   1759 
   1760 
   1761 
   1762 			/*
   1763 			 * XXX
   1764 			 * both Mac Mini variants have both outputs wired to
   1765 			 * the same connector and share the DDC lines
   1766 			 */
   1767 			if ((found > 0) &&
   1768 			    (sc->sc_ports[port].rp_ddc_type == ddc)) {
   1769 				/* duplicate entry for same connector */
   1770 				continue;
   1771 			}
   1772 
   1773 			/* internal DDC_DVI port gets priority */
   1774 			if ((ddc == RADEON_DDC_DVI) || (port == 1))
   1775 				port = 0;
   1776 			else
   1777 				port = 1;
   1778 
   1779 			sc->sc_ports[port].rp_ddc_type =
   1780 			    ddc > RADEON_DDC_CRT2 ? RADEON_DDC_NONE : ddc;
   1781 			sc->sc_ports[port].rp_dac_type = dac;
   1782 			sc->sc_ports[port].rp_conn_type =
   1783 			    min(conn, RADEON_CONN_UNSUPPORTED) ;
   1784 
   1785 			sc->sc_ports[port].rp_tmds_type = tmds;
   1786 
   1787 			if ((conn != RADEON_CONN_DVI_I) &&
   1788 			    (conn != RADEON_CONN_DVI_D) &&
   1789 			    (tmds == RADEON_TMDS_INT))
   1790 				sc->sc_ports[port].rp_tmds_type =
   1791 				    RADEON_TMDS_UNKNOWN;
   1792 			sc->sc_ports[port].rp_number = i - 1;
   1793 
   1794 			found += (port + 1);
   1795 		}
   1796 	}
   1797 
   1798 nobios:
   1799 	if (!found) {
   1800 		bool dvi_ext = FALSE, dvi_int = FALSE;
   1801 		DPRINTF(("No connector info in BIOS!\n"));
   1802 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
   1803 		    "dvi-internal", &dvi_int);
   1804 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
   1805 		    "dvi-external", &dvi_ext);
   1806 		if (dvi_ext) {
   1807 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1808 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_CRT2;
   1809 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1810 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_I;
   1811 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_EXT;	/* output to fp2 */
   1812 			sc->sc_ports[0].rp_number = 0;
   1813 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1814 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_NONE;
   1815 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_UNKNOWN;
   1816 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_NONE;
   1817 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1818 			sc->sc_ports[1].rp_number = 1;
   1819 		} else	if (dvi_int) {
   1820 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1821 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_CRT2;
   1822 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1823 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_I;
   1824 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1825 			sc->sc_ports[0].rp_number = 0;
   1826 		} else if IS_MOBILITY(sc) {
   1827 			/* default, port 0 = internal TMDS, port 1 = CRT */
   1828 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1829 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1830 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1831 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1832 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1833 			sc->sc_ports[0].rp_number = 0;
   1834 
   1835 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1836 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1837 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1838 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1839 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_EXT;
   1840 			sc->sc_ports[1].rp_number = 1;
   1841 		} else {
   1842 			/* default, port 0 = DVI, port 1 = CRT */
   1843 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1844 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1845 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1846 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1847 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1848 			sc->sc_ports[0].rp_number = 1;
   1849 
   1850 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1851 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1852 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1853 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1854 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1855 			sc->sc_ports[1].rp_number = 0;
   1856 		}
   1857 	}
   1858 
   1859 	/*
   1860 	 * Fixup for RS300/RS350/RS400 chips, that lack a primary DAC.
   1861 	 * these chips should use TVDAC for the VGA port.
   1862 	 */
   1863 	if (HAS_SDAC(sc)) {
   1864 		if (sc->sc_ports[0].rp_conn_type == RADEON_CONN_CRT) {
   1865 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1866 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1867 		} else {
   1868 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_TVDAC;
   1869 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1870 		}
   1871 	} else if (!HAS_CRTC2(sc)) {
   1872 		sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1873 	}
   1874 
   1875 	for (i = 0; i < 2; i++) {
   1876 		char	edid[128];
   1877 		uint8_t	ddc;
   1878 		struct edid_info *eip = &sc->sc_ports[i].rp_edid;
   1879 		prop_data_t edid_data;
   1880 
   1881 		DPRINTF(("Port #%d:\n", i));
   1882 		DPRINTF(("   conn = %d\n", sc->sc_ports[i].rp_conn_type));
   1883 		DPRINTF(("    ddc = %d\n", sc->sc_ports[i].rp_ddc_type));
   1884 		DPRINTF(("    dac = %d\n", sc->sc_ports[i].rp_dac_type));
   1885 		DPRINTF(("   tmds = %d\n", sc->sc_ports[i].rp_tmds_type));
   1886 		DPRINTF(("   crtc = %d\n", sc->sc_ports[i].rp_number));
   1887 
   1888 		sc->sc_ports[i].rp_edid_valid = 0;
   1889 		/* first look for static EDID data */
   1890 		if ((edid_data = prop_dictionary_get(device_properties(
   1891 		    sc->sc_dev), "EDID")) != NULL) {
   1892 
   1893 			aprint_debug_dev(sc->sc_dev, "using static EDID\n");
   1894 			memcpy(edid, prop_data_data_nocopy(edid_data), 128);
   1895 			if (edid_parse(edid, eip) == 0) {
   1896 
   1897 				sc->sc_ports[i].rp_edid_valid = 1;
   1898 			}
   1899 		}
   1900 		/* if we didn't find any we'll try to talk to the monitor */
   1901 		if (sc->sc_ports[i].rp_edid_valid != 1) {
   1902 
   1903 			ddc = sc->sc_ports[i].rp_ddc_type;
   1904 			if (ddc != RADEON_DDC_NONE) {
   1905 				if ((radeonfb_i2c_read_edid(sc, ddc, edid)
   1906 				    == 0) && (edid_parse(edid, eip) == 0)) {
   1907 
   1908 					sc->sc_ports[i].rp_edid_valid = 1;
   1909 #ifdef RADEONFB_DEBUG
   1910 					edid_print(eip);
   1911 #endif
   1912 				}
   1913 			}
   1914 		}
   1915 	}
   1916 
   1917 	return found;
   1918 }
   1919 
   1920 int
   1921 radeonfb_gettmds(struct radeonfb_softc *sc)
   1922 {
   1923 	int	i;
   1924 
   1925 	if (!sc->sc_biossz) {
   1926 		goto nobios;
   1927 	}
   1928 
   1929 	if (IS_ATOM(sc)) {
   1930 		/* XXX: not done yet */
   1931 	} else {
   1932 		uint16_t	ptr;
   1933 		int		n;
   1934 
   1935 		ptr = GETBIOS16(sc, 0x48);
   1936 		ptr = GETBIOS16(sc, ptr + 0x34);
   1937 		DPRINTF(("DFP table revision %d\n", GETBIOS8(sc, ptr)));
   1938 		if (GETBIOS8(sc, ptr) == 3) {
   1939 			/* revision three table */
   1940 			n = GETBIOS8(sc, ptr + 5) + 1;
   1941 			n = min(n, 4);
   1942 
   1943 			memset(sc->sc_tmds_pll, 0, sizeof (sc->sc_tmds_pll));
   1944 			for (i = 0; i < n; i++) {
   1945 				sc->sc_tmds_pll[i].rtp_pll = GETBIOS32(sc,
   1946 				    ptr + i * 10 + 8);
   1947 				sc->sc_tmds_pll[i].rtp_freq = GETBIOS16(sc,
   1948 				    ptr + i * 10 + 0x10);
   1949 				DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1950 					    sc->sc_tmds_pll[i].rtp_freq,
   1951 					    sc->sc_tmds_pll[i].rtp_pll));
   1952 			}
   1953 			return 0;
   1954 		}
   1955 	}
   1956 
   1957 nobios:
   1958 	DPRINTF(("no suitable DFP table present\n"));
   1959 	for (i = 0;
   1960 	     i < sizeof (radeonfb_tmds_pll) / sizeof (radeonfb_tmds_pll[0]);
   1961 	     i++) {
   1962 		int	j;
   1963 
   1964 		if (radeonfb_tmds_pll[i].family != sc->sc_family)
   1965 			continue;
   1966 
   1967 		for (j = 0; j < 4; j++) {
   1968 			sc->sc_tmds_pll[j] = radeonfb_tmds_pll[i].plls[j];
   1969 			DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1970 				    sc->sc_tmds_pll[j].rtp_freq,
   1971 				    sc->sc_tmds_pll[j].rtp_pll));
   1972 		}
   1973 		return 0;
   1974 	}
   1975 
   1976 	return -1;
   1977 }
   1978 
   1979 const struct videomode *
   1980 radeonfb_modelookup(const char *name)
   1981 {
   1982 	int	i;
   1983 
   1984 	for (i = 0; i < videomode_count; i++)
   1985 		if (!strcmp(name, videomode_list[i].name))
   1986 			return &videomode_list[i];
   1987 
   1988 	return NULL;
   1989 }
   1990 
   1991 void
   1992 radeonfb_pllwriteupdate(struct radeonfb_softc *sc, int crtc)
   1993 {
   1994 	if (crtc) {
   1995 		while (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   1996 		    RADEON_P2PLL_ATOMIC_UPDATE_R);
   1997 		SETPLL(sc, RADEON_P2PLL_REF_DIV, RADEON_P2PLL_ATOMIC_UPDATE_W);
   1998 	} else {
   1999 		while (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   2000 		    RADEON_PPLL_ATOMIC_UPDATE_R);
   2001 		SETPLL(sc, RADEON_PPLL_REF_DIV, RADEON_PPLL_ATOMIC_UPDATE_W);
   2002 	}
   2003 }
   2004 
   2005 void
   2006 radeonfb_pllwaitatomicread(struct radeonfb_softc *sc, int crtc)
   2007 {
   2008 	int	i;
   2009 
   2010 	for (i = 10000; i; i--) {
   2011 		if (crtc) {
   2012 			if (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   2013 			    RADEON_P2PLL_ATOMIC_UPDATE_R)
   2014 				break;
   2015 		} else {
   2016 			if (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   2017 			    RADEON_PPLL_ATOMIC_UPDATE_R)
   2018 				break;
   2019 		}
   2020 	}
   2021 }
   2022 
   2023 void
   2024 radeonfb_program_vclk(struct radeonfb_softc *sc, int dotclock, int crtc)
   2025 {
   2026 	uint32_t	pbit = 0;
   2027 	uint32_t	feed = 0;
   2028 	uint32_t	data, refdiv, div0;
   2029 
   2030 	radeonfb_calc_dividers(sc, dotclock, &pbit, &feed);
   2031 
   2032 	if (crtc == 0) {
   2033 
   2034 		refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV);
   2035 		if (IS_R300(sc)) {
   2036 			refdiv = (refdiv & ~R300_PPLL_REF_DIV_ACC_MASK) |
   2037 			    (sc->sc_refdiv << R300_PPLL_REF_DIV_ACC_SHIFT);
   2038 		} else {
   2039 			refdiv = (refdiv & ~RADEON_PPLL_REF_DIV_MASK) |
   2040 			    sc->sc_refdiv;
   2041 		}
   2042 		div0 = GETPLL(sc, RADEON_PPLL_DIV_0);
   2043 		div0 &= ~(RADEON_PPLL_FB3_DIV_MASK |
   2044 		    RADEON_PPLL_POST3_DIV_MASK);
   2045 		div0 |= pbit;
   2046 		div0 |= (feed & RADEON_PPLL_FB3_DIV_MASK);
   2047 
   2048 		if ((refdiv == GETPLL(sc, RADEON_PPLL_REF_DIV)) &&
   2049 		    (div0 == GETPLL(sc, RADEON_PPLL_DIV_0))) {
   2050 			/*
   2051 			 * nothing to do here, the PLL is already where we
   2052 			 * want it
   2053 			 */
   2054 			PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   2055 			    ~RADEON_PLL_DIV_SEL);
   2056 			aprint_debug_dev(sc->sc_dev, "no need to touch the PLL\n");
   2057 			return;
   2058 		}
   2059 
   2060 		/* alright, we do need to reprogram stuff */
   2061 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   2062 		    RADEON_VCLK_SRC_SEL_CPUCLK,
   2063 		    ~RADEON_VCLK_SRC_SEL_MASK);
   2064 
   2065 		/* put vclk into reset, use atomic updates */
   2066 		SETPLL(sc, RADEON_PPLL_CNTL,
   2067 		    RADEON_PPLL_REFCLK_SEL |
   2068 		    RADEON_PPLL_FBCLK_SEL |
   2069 		    RADEON_PPLL_RESET |
   2070 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   2071 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   2072 
   2073 		/* select clock 0 */
   2074 		PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   2075 		    ~RADEON_PLL_DIV_SEL);
   2076 
   2077 		PUTPLL(sc, RADEON_PPLL_REF_DIV, refdiv);
   2078 
   2079 		/* xf86-video-radeon does this, not sure why */
   2080 		PUTPLL(sc, RADEON_PPLL_DIV_0, div0);
   2081 		PUTPLL(sc, RADEON_PPLL_DIV_0, div0);
   2082 
   2083 		/* use the atomic update */
   2084 		radeonfb_pllwriteupdate(sc, crtc);
   2085 
   2086 		/* and wait for it to complete */
   2087 		radeonfb_pllwaitatomicread(sc, crtc);
   2088 
   2089 		/* program HTOTAL (why?) */
   2090 		PUTPLL(sc, RADEON_HTOTAL_CNTL, 0);
   2091 
   2092 		/* drop reset */
   2093 		CLRPLL(sc, RADEON_PPLL_CNTL,
   2094 		    RADEON_PPLL_RESET | RADEON_PPLL_SLEEP |
   2095 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   2096 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   2097 
   2098 		PRINTPLL(RADEON_PPLL_CNTL);
   2099 		PRINTPLL(RADEON_PPLL_REF_DIV);
   2100 		PRINTPLL(RADEON_PPLL_DIV_3);
   2101 
   2102 		/* give clock time to lock */
   2103 		delay(50000);
   2104 
   2105 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   2106 		    RADEON_VCLK_SRC_SEL_PPLLCLK,
   2107 		    ~RADEON_VCLK_SRC_SEL_MASK);
   2108 
   2109 	} else {
   2110 
   2111 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   2112 		    RADEON_PIX2CLK_SRC_SEL_CPUCLK,
   2113 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   2114 
   2115 		/* put vclk into reset, use atomic updates */
   2116 		SETPLL(sc, RADEON_P2PLL_CNTL,
   2117 		    RADEON_P2PLL_RESET |
   2118 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   2119 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   2120 
   2121 		/* program reference divider */
   2122 		PATCHPLL(sc, RADEON_P2PLL_REF_DIV, sc->sc_refdiv,
   2123 		    ~RADEON_P2PLL_REF_DIV_MASK);
   2124 
   2125 		/* program feedback and post dividers */
   2126 		data = GETPLL(sc, RADEON_P2PLL_DIV_0);
   2127 		data &= ~(RADEON_P2PLL_FB0_DIV_MASK |
   2128 		    RADEON_P2PLL_POST0_DIV_MASK);
   2129 		data |= pbit;
   2130 		data |= (feed & RADEON_P2PLL_FB0_DIV_MASK);
   2131 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   2132 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   2133 
   2134 		PRINTPLL(RADEON_P2PLL_REF_DIV);
   2135 		PRINTPLL(RADEON_P2PLL_DIV_0);
   2136 
   2137 		/* use the atomic update */
   2138 		radeonfb_pllwriteupdate(sc, crtc);
   2139 
   2140 		/* and wait for it to complete */
   2141 		radeonfb_pllwaitatomicread(sc, crtc);
   2142 
   2143 		/* program HTOTAL (why?) */
   2144 		PUTPLL(sc, RADEON_HTOTAL2_CNTL, 0);
   2145 
   2146 		/* drop reset */
   2147 		CLRPLL(sc, RADEON_P2PLL_CNTL,
   2148 		    RADEON_P2PLL_RESET | RADEON_P2PLL_SLEEP |
   2149 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   2150 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   2151 
   2152 		/* allow time for clock to lock */
   2153 		delay(50000);
   2154 
   2155 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   2156 		    RADEON_PIX2CLK_SRC_SEL_P2PLLCLK,
   2157 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   2158 	}
   2159 	PRINTREG(RADEON_CRTC_MORE_CNTL);
   2160 }
   2161 
   2162 void
   2163 radeonfb_modeswitch(struct radeonfb_display *dp)
   2164 {
   2165 	struct radeonfb_softc	*sc = dp->rd_softc;
   2166 	int			i;
   2167 
   2168 	/* blank the display while we switch modes */
   2169 	radeonfb_blank(dp, 1);
   2170 
   2171 #if 0
   2172 	SET32(sc, RADEON_CRTC_EXT_CNTL,
   2173 	    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2174 	    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2175 #endif
   2176 
   2177 	/* these registers might get in the way... */
   2178 	PUT32(sc, RADEON_OVR_CLR, 0);
   2179 	PUT32(sc, RADEON_OVR_WID_LEFT_RIGHT, 0);
   2180 	PUT32(sc, RADEON_OVR_WID_TOP_BOTTOM, 0);
   2181 	PUT32(sc, RADEON_OV0_SCALE_CNTL, 0);
   2182 	PUT32(sc, RADEON_SUBPIC_CNTL, 0);
   2183 	PUT32(sc, RADEON_VIPH_CONTROL, 0);
   2184 	PUT32(sc, RADEON_I2C_CNTL_1, 0);
   2185 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2186 	PUT32(sc, RADEON_CAP0_TRIG_CNTL, 0);
   2187 	PUT32(sc, RADEON_CAP1_TRIG_CNTL, 0);
   2188 	PUT32(sc, RADEON_SURFACE_CNTL, 0);
   2189 
   2190 	for (i = 0; i < dp->rd_ncrtcs; i++)
   2191 		radeonfb_setcrtc(dp, i);
   2192 
   2193 	/* activate the display */
   2194 	radeonfb_blank(dp, 0);
   2195 }
   2196 
   2197 void
   2198 radeonfb_setcrtc(struct radeonfb_display *dp, int index)
   2199 {
   2200 	int			crtc;
   2201 	struct videomode	*mode;
   2202 	struct radeonfb_softc	*sc;
   2203 	struct radeonfb_crtc	*cp;
   2204 	uint32_t		v;
   2205 	uint32_t		gencntl;
   2206 	uint32_t		htotaldisp;
   2207 	uint32_t		hsyncstrt;
   2208 	uint32_t		vtotaldisp;
   2209 	uint32_t		vsyncstrt;
   2210 	uint32_t		fphsyncstrt;
   2211 	uint32_t		fpvsyncstrt;
   2212 	uint32_t		fphtotaldisp;
   2213 	uint32_t		fpvtotaldisp;
   2214 	uint32_t		pitch;
   2215 
   2216 	sc = dp->rd_softc;
   2217 	cp = &dp->rd_crtcs[index];
   2218 	crtc = cp->rc_number;
   2219 	mode = &cp->rc_videomode;
   2220 
   2221 #if 1
   2222 	pitch = dp->rd_stride / dp->rd_bpp;
   2223 #else
   2224 	pitch = (((sc->sc_maxx * sc->sc_maxbpp) + ((sc->sc_maxbpp * 8) - 1)) /
   2225 	    (sc->sc_maxbpp * 8));
   2226 #endif
   2227 	switch (crtc) {
   2228 	case 0:
   2229 		gencntl = RADEON_CRTC_GEN_CNTL;
   2230 		htotaldisp = RADEON_CRTC_H_TOTAL_DISP;
   2231 		hsyncstrt = RADEON_CRTC_H_SYNC_STRT_WID;
   2232 		vtotaldisp = RADEON_CRTC_V_TOTAL_DISP;
   2233 		vsyncstrt = RADEON_CRTC_V_SYNC_STRT_WID;
   2234 		fpvsyncstrt = RADEON_FP_V_SYNC_STRT_WID;
   2235 		fphsyncstrt = RADEON_FP_H_SYNC_STRT_WID;
   2236 		fpvtotaldisp = RADEON_FP_CRTC_V_TOTAL_DISP;
   2237 		fphtotaldisp = RADEON_FP_CRTC_H_TOTAL_DISP;
   2238 		break;
   2239 	case 1:
   2240 		gencntl = RADEON_CRTC2_GEN_CNTL;
   2241 		htotaldisp = RADEON_CRTC2_H_TOTAL_DISP;
   2242 		hsyncstrt = RADEON_CRTC2_H_SYNC_STRT_WID;
   2243 		vtotaldisp = RADEON_CRTC2_V_TOTAL_DISP;
   2244 		vsyncstrt = RADEON_CRTC2_V_SYNC_STRT_WID;
   2245 		fpvsyncstrt = RADEON_FP_V2_SYNC_STRT_WID;
   2246 		fphsyncstrt = RADEON_FP_H2_SYNC_STRT_WID;
   2247 		fpvtotaldisp = RADEON_FP_CRTC2_V_TOTAL_DISP;
   2248 		fphtotaldisp = RADEON_FP_CRTC2_H_TOTAL_DISP;
   2249 		break;
   2250 	default:
   2251 		panic("Bad CRTC!");
   2252 		break;
   2253 	}
   2254 
   2255 	/*
   2256 	 * CRTC_GEN_CNTL - depth, accelerator mode, etc.
   2257 	 */
   2258 	/* only bother with 32bpp and 8bpp */
   2259 	v = dp->rd_format << RADEON_CRTC_PIX_WIDTH_SHIFT;
   2260 
   2261 	if (crtc == 1) {
   2262 		v |= RADEON_CRTC2_CRT2_ON | RADEON_CRTC2_EN;
   2263 	} else {
   2264 		v |= RADEON_CRTC_EXT_DISP_EN | RADEON_CRTC_EN;
   2265 	}
   2266 
   2267 	if (mode->flags & VID_DBLSCAN)
   2268 		v |= RADEON_CRTC2_DBL_SCAN_EN;
   2269 
   2270 	if (mode->flags & VID_INTERLACE)
   2271 		v |= RADEON_CRTC2_INTERLACE_EN;
   2272 
   2273 	if (mode->flags & VID_CSYNC) {
   2274 		v |= RADEON_CRTC2_CSYNC_EN;
   2275 		if (crtc == 1)
   2276 			v |= RADEON_CRTC2_VSYNC_TRISTAT;
   2277 	}
   2278 
   2279 	PUT32(sc, gencntl, v);
   2280 	DPRINTF(("CRTC%s_GEN_CNTL = %08x\n", crtc ? "2" : "", v));
   2281 
   2282 	/*
   2283 	 * CRTC_EXT_CNTL - preserve disable flags, set ATI linear and EXT_CNT
   2284 	 */
   2285 	v = GET32(sc, RADEON_CRTC_EXT_CNTL);
   2286 	if (crtc == 0) {
   2287 		v &= (RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2288 		    RADEON_CRTC_DISPLAY_DIS);
   2289 		v |= RADEON_XCRT_CNT_EN | RADEON_VGA_ATI_LINEAR;
   2290 		if (mode->flags & VID_CSYNC)
   2291 			v |= RADEON_CRTC_VSYNC_TRISTAT;
   2292 	}
   2293 	/* unconditional turn on CRT, in case first CRTC is DFP */
   2294 	v |= RADEON_CRTC_CRT_ON;
   2295 	PUT32(sc, RADEON_CRTC_EXT_CNTL, v);
   2296 	PRINTREG(RADEON_CRTC_EXT_CNTL);
   2297 
   2298 	/*
   2299 	 * H_TOTAL_DISP
   2300 	 */
   2301 	v = ((mode->hdisplay / 8) - 1) << 16;
   2302 	v |= (mode->htotal / 8) - 1;
   2303 	PUT32(sc, htotaldisp, v);
   2304 	DPRINTF(("CRTC%s_H_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2305 	PUT32(sc, fphtotaldisp, v);
   2306 	DPRINTF(("FP_H%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2307 
   2308 	/*
   2309 	 * H_SYNC_STRT_WID
   2310 	 */
   2311 	v = (((mode->hsync_end - mode->hsync_start) / 8) << 16);
   2312 	v |= (mode->hsync_start - 8);	/* match xf86-video-radeon */
   2313 	if (mode->flags & VID_NHSYNC)
   2314 		v |= RADEON_CRTC_H_SYNC_POL;
   2315 	PUT32(sc, hsyncstrt, v);
   2316 	DPRINTF(("CRTC%s_H_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2317 	PUT32(sc, fphsyncstrt, v);
   2318 	DPRINTF(("FP_H%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2319 
   2320 	/*
   2321 	 * V_TOTAL_DISP
   2322 	 */
   2323 	v = ((mode->vdisplay - 1) << 16);
   2324 	v |= (mode->vtotal - 1);
   2325 	PUT32(sc, vtotaldisp, v);
   2326 	DPRINTF(("CRTC%s_V_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2327 	PUT32(sc, fpvtotaldisp, v);
   2328 	DPRINTF(("FP_V%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2329 
   2330 	/*
   2331 	 * V_SYNC_STRT_WID
   2332 	 */
   2333 	v = ((mode->vsync_end - mode->vsync_start) << 16);
   2334 	v |= (mode->vsync_start - 1);
   2335 	if (mode->flags & VID_NVSYNC)
   2336 		v |= RADEON_CRTC_V_SYNC_POL;
   2337 	PUT32(sc, vsyncstrt, v);
   2338 	DPRINTF(("CRTC%s_V_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2339 	PUT32(sc, fpvsyncstrt, v);
   2340 	DPRINTF(("FP_V%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2341 
   2342 	radeonfb_program_vclk(sc, mode->dot_clock, crtc);
   2343 
   2344 	switch (crtc) {
   2345 	case 0:
   2346 		PUT32(sc, RADEON_CRTC_OFFSET, 0);
   2347 		PUT32(sc, RADEON_CRTC_OFFSET_CNTL, 0);
   2348 		PUT32(sc, RADEON_CRTC_PITCH, pitch);
   2349 		CLR32(sc, RADEON_DISP_MERGE_CNTL, RADEON_DISP_RGB_OFFSET_EN);
   2350 
   2351 		CLR32(sc, RADEON_CRTC_EXT_CNTL,
   2352 		    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2353 		    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2354 		CLR32(sc, RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B);
   2355 		PRINTREG(RADEON_CRTC_EXT_CNTL);
   2356 		PRINTREG(RADEON_CRTC_GEN_CNTL);
   2357 		PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   2358 		break;
   2359 
   2360 	case 1:
   2361 		PUT32(sc, RADEON_CRTC2_OFFSET, 0);
   2362 		PUT32(sc, RADEON_CRTC2_OFFSET_CNTL, 0);
   2363 		PUT32(sc, RADEON_CRTC2_PITCH, pitch);
   2364 		CLR32(sc, RADEON_DISP2_MERGE_CNTL, RADEON_DISP2_RGB_OFFSET_EN);
   2365 		CLR32(sc, RADEON_CRTC2_GEN_CNTL,
   2366 		    RADEON_CRTC2_VSYNC_DIS |
   2367 		    RADEON_CRTC2_HSYNC_DIS |
   2368 		    RADEON_CRTC2_DISP_DIS | RADEON_CRTC2_DISP_REQ_EN_B);
   2369 		PRINTREG(RADEON_CRTC2_GEN_CNTL);
   2370 		break;
   2371 	}
   2372 }
   2373 
   2374 int
   2375 radeonfb_isblank(struct radeonfb_display *dp)
   2376 {
   2377 	uint32_t	reg, mask;
   2378 
   2379 	if(!dp->rd_softc->sc_mapped)
   2380 		return 1;
   2381 
   2382 	if (dp->rd_crtcs[0].rc_number) {
   2383 		reg = RADEON_CRTC2_GEN_CNTL;
   2384 		mask = RADEON_CRTC2_DISP_DIS;
   2385 	} else {
   2386 		reg = RADEON_CRTC_EXT_CNTL;
   2387 		mask = RADEON_CRTC_DISPLAY_DIS;
   2388 	}
   2389 	return ((GET32(dp->rd_softc, reg) & mask) ? 1 : 0);
   2390 }
   2391 
   2392 void
   2393 radeonfb_blank(struct radeonfb_display *dp, int blank)
   2394 {
   2395 	struct radeonfb_softc	*sc = dp->rd_softc;
   2396 	uint32_t		reg, mask;
   2397 	uint32_t		fpreg, fpval;
   2398 	int			i;
   2399 
   2400 	if (!sc->sc_mapped)
   2401 		return;
   2402 
   2403 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   2404 
   2405 		if (dp->rd_crtcs[i].rc_number) {
   2406 			reg = RADEON_CRTC2_GEN_CNTL;
   2407 			mask = RADEON_CRTC2_DISP_DIS;
   2408 			fpreg = RADEON_FP2_GEN_CNTL;
   2409 			fpval = RADEON_FP2_ON;
   2410 		} else {
   2411 			reg = RADEON_CRTC_EXT_CNTL;
   2412 			mask = RADEON_CRTC_DISPLAY_DIS;
   2413 			fpreg = RADEON_FP_GEN_CNTL;
   2414 			fpval = RADEON_FP_FPON;
   2415 		}
   2416 
   2417 		if (blank) {
   2418 			SET32(sc, reg, mask);
   2419 			CLR32(sc, fpreg, fpval);
   2420 		} else {
   2421 			CLR32(sc, reg, mask);
   2422 			SET32(sc, fpreg, fpval);
   2423 		}
   2424 	}
   2425 	PRINTREG(RADEON_FP_GEN_CNTL);
   2426 	PRINTREG(RADEON_FP2_GEN_CNTL);
   2427 }
   2428 
   2429 void
   2430 radeonfb_init_screen(void *cookie, struct vcons_screen *scr, int existing,
   2431     long *defattr)
   2432 {
   2433 	struct radeonfb_display *dp = cookie;
   2434 	struct rasops_info *ri = &scr->scr_ri;
   2435 
   2436 	/* initialize font subsystem */
   2437 	wsfont_init();
   2438 
   2439 	scr->scr_flags |= VCONS_LOADFONT;
   2440 
   2441 	DPRINTF(("init screen called, existing %d\n", existing));
   2442 
   2443 	ri->ri_depth = dp->rd_bpp;
   2444 	ri->ri_width = dp->rd_virtx;
   2445 	ri->ri_height = dp->rd_virty;
   2446 	ri->ri_stride = dp->rd_stride;
   2447 	ri->ri_flg = RI_CENTER;
   2448 	switch (ri->ri_depth) {
   2449 		case 8:
   2450 			ri->ri_flg |= RI_ENABLE_ALPHA | RI_8BIT_IS_RGB | RI_PREFER_ALPHA;
   2451 			break;
   2452 		case 32:
   2453 			ri->ri_flg |= RI_ENABLE_ALPHA | RI_PREFER_ALPHA;
   2454 			/* we run radeons in RGB even on SPARC hardware */
   2455 			ri->ri_rnum = 8;
   2456 			ri->ri_gnum = 8;
   2457 			ri->ri_bnum = 8;
   2458 			ri->ri_rpos = 16;
   2459 			ri->ri_gpos = 8;
   2460 			ri->ri_bpos = 0;
   2461 			break;
   2462 	}
   2463 
   2464 	ri->ri_bits = (void *)dp->rd_fbptr;
   2465 
   2466 #ifdef VCONS_DRAW_INTR
   2467 	scr->scr_flags |= VCONS_DONT_READ;
   2468 #endif
   2469 
   2470 	if (existing) {
   2471 		ri->ri_flg |= RI_CLEAR;
   2472 
   2473 		/* start a modeswitch now */
   2474 		radeonfb_modeswitch(dp);
   2475 	}
   2476 
   2477 	/*
   2478 	 * XXX: font selection should be based on properties, with some
   2479 	 * normal/reasonable default.
   2480 	 */
   2481 
   2482 	/* initialize and look for an initial font */
   2483 	rasops_init(ri, 0, 0);
   2484 	ri->ri_caps = WSSCREEN_UNDERLINE | WSSCREEN_HILIT |
   2485 		    WSSCREEN_WSCOLORS | WSSCREEN_REVERSE | WSSCREEN_RESIZE;
   2486 
   2487 	rasops_reconfig(ri, dp->rd_virty / ri->ri_font->fontheight,
   2488 		    dp->rd_virtx / ri->ri_font->fontwidth);
   2489 
   2490 	/* enable acceleration */
   2491 	dp->rd_putchar = ri->ri_ops.putchar;
   2492 	ri->ri_ops.copyrows = radeonfb_copyrows;
   2493 	ri->ri_ops.copycols = radeonfb_copycols;
   2494 	ri->ri_ops.eraserows = radeonfb_eraserows;
   2495 	ri->ri_ops.erasecols = radeonfb_erasecols;
   2496 	/* pick a putchar method based on font and Radeon model */
   2497 	if (ri->ri_font->stride < ri->ri_font->fontwidth) {
   2498 		/* got a bitmap font */
   2499 #ifndef RADEONFB_ALWAYS_ACCEL_PUTCHAR
   2500 		if (IS_R300(dp->rd_softc)) {
   2501 			/*
   2502 			 * radeonfb_putchar() doesn't work right on some R3xx
   2503 			 * so we use software drawing here, the wrapper just
   2504 			 *  makes sure the engine is idle before scribbling
   2505 			 * into vram
   2506 			 */
   2507 			ri->ri_ops.putchar = radeonfb_putchar_wrapper;
   2508 		} else
   2509 #endif
   2510 			ri->ri_ops.putchar = radeonfb_putchar;
   2511 	} else {
   2512 		/* got an alpha font */
   2513 		switch(ri->ri_depth) {
   2514 			case 32:
   2515 				ri->ri_ops.putchar = radeonfb_putchar_aa32;
   2516 				break;
   2517 			case 8:
   2518 				ri->ri_ops.putchar = radeonfb_putchar_aa8;
   2519 				break;
   2520 			default:
   2521 				/* XXX this should never happen */
   2522 				panic("%s: depth is not 8 or 32 but we got an" \
   2523 					 " alpha font?!", __func__);
   2524 		}
   2525 	}
   2526 	ri->ri_ops.cursor = radeonfb_cursor;
   2527 }
   2528 
   2529 void
   2530 radeonfb_set_fbloc(struct radeonfb_softc *sc)
   2531 {
   2532 	uint32_t	gen, ext, gen2 = 0;
   2533 	uint32_t	agploc, aperbase, apersize, mcfbloc;
   2534 
   2535 	gen = GET32(sc, RADEON_CRTC_GEN_CNTL);
   2536 	/* XXX */
   2537 	ext = GET32(sc, RADEON_CRTC_EXT_CNTL) & ~RADEON_CRTC_DISPLAY_DIS;
   2538 	agploc = GET32(sc, RADEON_MC_AGP_LOCATION);
   2539 	aperbase = GET32(sc, RADEON_CONFIG_APER_0_BASE);
   2540 	apersize = GET32(sc, RADEON_CONFIG_APER_SIZE);
   2541 
   2542 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISP_REQ_EN_B);
   2543 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISPLAY_DIS);
   2544 #if 0
   2545 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISPLAY_DIS);
   2546 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISP_REQ_EN_B);
   2547 #endif
   2548 
   2549 	if (HAS_CRTC2(sc)) {
   2550 		gen2 = GET32(sc, RADEON_CRTC2_GEN_CNTL);
   2551 		PUT32(sc, RADEON_CRTC2_GEN_CNTL,
   2552 		    gen2 | RADEON_CRTC2_DISP_REQ_EN_B);
   2553 	}
   2554 
   2555 	delay(100000);
   2556 
   2557 	mcfbloc = (aperbase >> 16) |
   2558 	    ((aperbase + (apersize - 1)) & 0xffff0000);
   2559 
   2560 	sc->sc_aperbase = (mcfbloc & 0xffff) << 16;
   2561 	sc->sc_memsz = apersize;
   2562 
   2563 	if (((agploc & 0xffff) << 16) !=
   2564 	    ((mcfbloc & 0xffff0000U) + 0x10000)) {
   2565 		agploc = mcfbloc & 0xffff0000U;
   2566 		agploc |= ((agploc + 0x10000) >> 16);
   2567 	}
   2568 
   2569 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2570 
   2571 	PUT32(sc, RADEON_MC_FB_LOCATION, mcfbloc);
   2572 	PUT32(sc, RADEON_MC_AGP_LOCATION, agploc);
   2573 
   2574 	DPRINTF(("aperbase = %u\n", aperbase));
   2575 	PRINTREG(RADEON_MC_FB_LOCATION);
   2576 	PRINTREG(RADEON_MC_AGP_LOCATION);
   2577 
   2578 	PUT32(sc, RADEON_DISPLAY_BASE_ADDR, sc->sc_aperbase);
   2579 
   2580 	if (HAS_CRTC2(sc))
   2581 		PUT32(sc, RADEON_DISPLAY2_BASE_ADDR, sc->sc_aperbase);
   2582 
   2583 	PUT32(sc, RADEON_OV0_BASE_ADDR, sc->sc_aperbase);
   2584 
   2585 #if 0
   2586 	/* XXX: what is this AGP garbage? :-) */
   2587 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2588 #endif
   2589 
   2590 	delay(100000);
   2591 
   2592 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen);
   2593 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext);
   2594 
   2595 	if (HAS_CRTC2(sc))
   2596 		PUT32(sc, RADEON_CRTC2_GEN_CNTL, gen2);
   2597 }
   2598 
   2599 void
   2600 radeonfb_init_misc(struct radeonfb_softc *sc)
   2601 {
   2602 	PUT32(sc, RADEON_BUS_CNTL,
   2603 	    RADEON_BUS_MASTER_DIS |
   2604 	    RADEON_BUS_PREFETCH_MODE_ACT |
   2605 	    RADEON_BUS_PCI_READ_RETRY_EN |
   2606 	    RADEON_BUS_PCI_WRT_RETRY_EN |
   2607 	    (3 << RADEON_BUS_RETRY_WS_SHIFT) |
   2608 	    RADEON_BUS_MSTR_RD_MULT |
   2609 	    RADEON_BUS_MSTR_RD_LINE |
   2610 	    RADEON_BUS_RD_DISCARD_EN |
   2611 	    RADEON_BUS_MSTR_DISCONNECT_EN |
   2612 	    RADEON_BUS_READ_BURST);
   2613 
   2614 	PUT32(sc, RADEON_BUS_CNTL1, 0xf0);
   2615 	/* PUT32(sc, RADEON_SEPROM_CNTL1, 0x09ff0000); */
   2616 	PUT32(sc, RADEON_FCP_CNTL, RADEON_FCP0_SRC_GND);
   2617 	PUT32(sc, RADEON_RBBM_CNTL,
   2618 	    (3 << RADEON_RB_SETTLE_SHIFT) |
   2619 	    (4 << RADEON_ABORTCLKS_HI_SHIFT) |
   2620 	    (4 << RADEON_ABORTCLKS_CP_SHIFT) |
   2621 	    (4 << RADEON_ABORTCLKS_CFIFO_SHIFT));
   2622 
   2623 	/* XXX: figure out what these mean! */
   2624 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2625 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2626 #if 0
   2627 	PUT32(sc, RADEON_DISP_MISC_CNTL, 0x5bb00400);
   2628 #endif
   2629 
   2630 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2631 	PUT32(sc, RADEON_GEN_INT_STATUS, GET32(sc, RADEON_GEN_INT_STATUS));
   2632 }
   2633 
   2634 static void
   2635 radeonfb_putpal(struct radeonfb_display *dp, int idx, int r, int g, int b)
   2636 {
   2637 	struct radeonfb_softc *sc = dp->rd_softc;
   2638 	int		crtc, cc;
   2639 	uint32_t	vclk;
   2640 
   2641 	vclk = GETPLL(sc, RADEON_VCLK_ECP_CNTL);
   2642 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk & ~RADEON_PIXCLK_DAC_ALWAYS_ONb);
   2643 
   2644 	/* initialize the palette for every CRTC used by this display */
   2645 	for (cc = 0; cc < dp->rd_ncrtcs; cc++) {
   2646 		crtc = dp->rd_crtcs[cc].rc_number;
   2647 		DPRINTF(("%s: doing crtc %d %d\n", __func__, cc, crtc));
   2648 
   2649 		if (crtc)
   2650 			SET32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2651 		else
   2652 			CLR32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2653 
   2654 		PUT32(sc, RADEON_PALETTE_INDEX, idx);
   2655             	PUT32(sc, RADEON_PALETTE_30_DATA,
   2656             	    (r << 22) | (g << 12) | (b << 2));
   2657 	}
   2658 
   2659 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk);
   2660 }
   2661 
   2662 /*
   2663  * This loads a linear color map for true color.
   2664  */
   2665 void
   2666 radeonfb_init_palette(struct radeonfb_display *dp)
   2667 {
   2668 	int		i;
   2669 
   2670 #define	DAC_WIDTH ((1 << 10) - 1)
   2671 #define	CLUT_WIDTH ((1 << 8) - 1)
   2672 #define	CLUT_COLOR(i)      ((i * DAC_WIDTH * 2 / CLUT_WIDTH + 1) / 2)
   2673 
   2674 	if (dp->rd_bpp == 8) {
   2675 
   2676 		/* R3G3B2 palette */
   2677 		uint32_t tmp, r, g, b;
   2678 
   2679 	        for (i = 0; i <= CLUT_WIDTH; ++i) {
   2680 			tmp = i & 0xe0;
   2681 
   2682 			/*
   2683 			 * replicate bits so 0xe0 maps to a red value of 0xff
   2684 			 * in order to make white look actually white
   2685 			 */
   2686 			tmp |= (tmp >> 3) | (tmp >> 6);
   2687 			r = tmp;
   2688 
   2689 			tmp = (i & 0x1c) << 3;
   2690 			tmp |= (tmp >> 3) | (tmp >> 6);
   2691 			g = tmp;
   2692 
   2693 			tmp = (i & 0x03) << 6;
   2694 			tmp |= tmp >> 2;
   2695 			tmp |= tmp >> 4;
   2696 			b = tmp;
   2697 
   2698 			radeonfb_putpal(dp, i, r, g, b);
   2699 		}
   2700 	} else {
   2701 		/* linear ramp */
   2702 		for (i = 0; i <= CLUT_WIDTH; ++i) {
   2703 			radeonfb_putpal(dp, i, i, i, i);
   2704 		}
   2705 	}
   2706 }
   2707 
   2708 static int
   2709 radeonfb_putcmap(struct radeonfb_display *dp, struct wsdisplay_cmap *cm)
   2710 {
   2711 	u_char *r, *g, *b;
   2712 	u_int index = cm->index;
   2713 	u_int count = cm->count;
   2714 	int i, error;
   2715 	u_char rbuf[256], gbuf[256], bbuf[256];
   2716 
   2717 #ifdef GENFB_DEBUG
   2718 	aprint_debug("putcmap: %d %d\n",index, count);
   2719 #endif
   2720 	if (cm->index >= 256 || cm->count > 256 ||
   2721 	    (cm->index + cm->count) > 256)
   2722 		return EINVAL;
   2723 	error = copyin(cm->red, &rbuf[index], count);
   2724 	if (error)
   2725 		return error;
   2726 	error = copyin(cm->green, &gbuf[index], count);
   2727 	if (error)
   2728 		return error;
   2729 	error = copyin(cm->blue, &bbuf[index], count);
   2730 	if (error)
   2731 		return error;
   2732 
   2733 	memcpy(&dp->rd_cmap_red[index], &rbuf[index], count);
   2734 	memcpy(&dp->rd_cmap_green[index], &gbuf[index], count);
   2735 	memcpy(&dp->rd_cmap_blue[index], &bbuf[index], count);
   2736 
   2737 	r = &dp->rd_cmap_red[index];
   2738 	g = &dp->rd_cmap_green[index];
   2739 	b = &dp->rd_cmap_blue[index];
   2740 
   2741 	for (i = 0; i < count; i++) {
   2742 		radeonfb_putpal(dp, index, *r, *g, *b);
   2743 		index++;
   2744 		r++, g++, b++;
   2745 	}
   2746 	return 0;
   2747 }
   2748 
   2749 static int
   2750 radeonfb_getcmap(struct radeonfb_display *dp, struct wsdisplay_cmap *cm)
   2751 {
   2752 	u_int index = cm->index;
   2753 	u_int count = cm->count;
   2754 	int error;
   2755 
   2756 	if (index >= 255 || count > 256 || index + count > 256)
   2757 		return EINVAL;
   2758 
   2759 	error = copyout(&dp->rd_cmap_red[index],   cm->red,   count);
   2760 	if (error)
   2761 		return error;
   2762 	error = copyout(&dp->rd_cmap_green[index], cm->green, count);
   2763 	if (error)
   2764 		return error;
   2765 	error = copyout(&dp->rd_cmap_blue[index],  cm->blue,  count);
   2766 	if (error)
   2767 		return error;
   2768 
   2769 	return 0;
   2770 }
   2771 
   2772 /*
   2773  * Bugs in some R300 hardware requires this when accessing CLOCK_CNTL_INDEX.
   2774  */
   2775 void
   2776 radeonfb_r300cg_workaround(struct radeonfb_softc *sc)
   2777 {
   2778 	uint32_t	tmp, save;
   2779 
   2780 	save = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   2781 	tmp = save & ~(0x3f | RADEON_PLL_WR_EN);
   2782 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, tmp);
   2783 	tmp = GET32(sc, RADEON_CLOCK_CNTL_DATA);
   2784 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, save);
   2785 }
   2786 
   2787 /*
   2788  * Acceleration entry points.
   2789  */
   2790 
   2791 /* this one draws characters using bitmap fonts */
   2792 static void
   2793 radeonfb_putchar(void *cookie, int row, int col, u_int c, long attr)
   2794 {
   2795 	struct rasops_info	*ri = cookie;
   2796 	struct vcons_screen	*scr = ri->ri_hw;
   2797 	struct radeonfb_display	*dp = scr->scr_cookie;
   2798 	struct radeonfb_softc	*sc = dp->rd_softc;
   2799 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2800 	uint32_t		w, h;
   2801 	int			xd, yd, offset, i;
   2802 	uint32_t		bg, fg, gmc;
   2803 	uint32_t		reg;
   2804 	uint8_t			*data8;
   2805 	uint16_t		*data16;
   2806 	void			*data;
   2807 
   2808 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2809 		return;
   2810 
   2811 	if (!CHAR_IN_FONT(c, font))
   2812 		return;
   2813 
   2814 	w = font->fontwidth;
   2815 	h = font->fontheight;
   2816 
   2817 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2818 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2819 
   2820 	xd = ri->ri_xorigin + col * w;
   2821 	yd = ri->ri_yorigin + row * h;
   2822 
   2823 	if (c == 0x20) {
   2824 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   2825 		return;
   2826 	}
   2827 	data = WSFONT_GLYPH(c, font);
   2828 
   2829 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2830 
   2831 	radeonfb_wait_fifo(sc, 9);
   2832 
   2833 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2834 	    RADEON_GMC_BRUSH_NONE |
   2835 	    RADEON_GMC_SRC_DATATYPE_MONO_FG_BG |
   2836 	    RADEON_GMC_DST_CLIPPING |
   2837 	    RADEON_ROP3_S |
   2838 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2839 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2840 	    RADEON_GMC_WR_MSK_DIS |
   2841 	    gmc);
   2842 
   2843 	PUT32(sc, RADEON_SC_LEFT, xd);
   2844 	PUT32(sc, RADEON_SC_RIGHT, xd + w);
   2845 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, fg);
   2846 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, bg);
   2847 	PUT32(sc, RADEON_DP_CNTL,
   2848 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2849 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2850 
   2851 	PUT32(sc, RADEON_SRC_X_Y, 0);
   2852 	offset = 32 - (font->stride << 3);
   2853 	PUT32(sc, RADEON_DST_X_Y, ((xd - offset) << 16) | yd);
   2854 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (32 << 16) | h);
   2855 
   2856 	radeonfb_wait_fifo(sc, h);
   2857 	switch (font->stride) {
   2858 		case 1: {
   2859 			data8 = data;
   2860 			for (i = 0; i < h; i++) {
   2861 				reg = *data8;
   2862 #if BYTE_ORDER == LITTLE_ENDIAN
   2863 				reg = reg << 24;
   2864 #endif
   2865 				bus_space_write_stream_4(sc->sc_regt,
   2866 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   2867 				data8++;
   2868 			}
   2869 			break;
   2870 		}
   2871 		case 2: {
   2872 			data16 = data;
   2873 			for (i = 0; i < h; i++) {
   2874 				reg = *data16;
   2875 #if BYTE_ORDER == LITTLE_ENDIAN
   2876 				reg = reg << 16;
   2877 #endif
   2878 				bus_space_write_stream_4(sc->sc_regt,
   2879 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   2880 				data16++;
   2881 			}
   2882 			break;
   2883 		}
   2884 	}
   2885 	if (attr & 1)
   2886 		radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   2887 }
   2888 
   2889 /* ... while this one is for anti-aliased ones */
   2890 static void
   2891 radeonfb_putchar_aa32(void *cookie, int row, int col, u_int c, long attr)
   2892 {
   2893 	struct rasops_info	*ri = cookie;
   2894 	struct vcons_screen	*scr = ri->ri_hw;
   2895 	struct radeonfb_display	*dp = scr->scr_cookie;
   2896 	struct radeonfb_softc	*sc = dp->rd_softc;
   2897 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2898 	uint32_t		bg, fg, gmc;
   2899 	uint8_t			*data;
   2900 	int			w, h, xd, yd;
   2901 	int 			i, r, g, b, aval;
   2902 	int 			rf, gf, bf, rb, gb, bb;
   2903 	uint32_t 		pixel;
   2904 	int rv;
   2905 
   2906 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2907 		return;
   2908 
   2909 	if (!CHAR_IN_FONT(c, font))
   2910 		return;
   2911 
   2912 	w = font->fontwidth;
   2913 	h = font->fontheight;
   2914 
   2915 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2916 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2917 
   2918 	xd = ri->ri_xorigin + col * w;
   2919 	yd = ri->ri_yorigin + row * h;
   2920 
   2921 	if (c == 0x20) {
   2922 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   2923 		if (attr & 1)
   2924 			radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   2925 		return;
   2926 	}
   2927 	rv = glyphcache_try(&dp->rd_gc, c, xd, yd, attr);
   2928 	if (rv == GC_OK)
   2929 		return;
   2930 
   2931 	data = WSFONT_GLYPH(c, font);
   2932 
   2933 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2934 
   2935 	radeonfb_wait_fifo(sc, 5);
   2936 
   2937 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2938 	    RADEON_GMC_BRUSH_NONE |
   2939 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2940 	    RADEON_ROP3_S |
   2941 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2942 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2943 	    RADEON_GMC_WR_MSK_DIS |
   2944 	    gmc);
   2945 
   2946 	PUT32(sc, RADEON_DP_CNTL,
   2947 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2948 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2949 
   2950 	PUT32(sc, RADEON_SRC_X_Y, 0);
   2951 	PUT32(sc, RADEON_DST_X_Y, (xd << 16) | yd);
   2952 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (w << 16) | h);
   2953 
   2954 	rf = (fg >> 16) & 0xff;
   2955 	rb = (bg >> 16) & 0xff;
   2956 	gf = (fg >> 8) & 0xff;
   2957 	gb = (bg >> 8) & 0xff;
   2958 	bf =  fg & 0xff;
   2959 	bb =  bg & 0xff;
   2960 
   2961 	/*
   2962 	 * I doubt we can upload data faster than even the slowest Radeon
   2963 	 * could process them, especially when doing the alpha blending stuff
   2964 	 * along the way, so just make sure there's some room in the FIFO and
   2965 	 * then hammer away
   2966 	 * As it turns out we can, so make periodic stops to let the FIFO
   2967 	 * drain.
   2968 	 */
   2969 	radeonfb_wait_fifo(sc, 20);
   2970 	for (i = 0; i < ri->ri_fontscale; i++) {
   2971 		aval = *data;
   2972 		data++;
   2973 		if (aval == 0) {
   2974 			pixel = bg;
   2975 		} else if (aval == 255) {
   2976 			pixel = fg;
   2977 		} else {
   2978 			r = aval * rf + (255 - aval) * rb;
   2979 			g = aval * gf + (255 - aval) * gb;
   2980 			b = aval * bf + (255 - aval) * bb;
   2981 			pixel = (r & 0xff00) << 8 |
   2982 			        (g & 0xff00) |
   2983 			        (b & 0xff00) >> 8;
   2984 		}
   2985 		if (i & 16)
   2986 			radeonfb_wait_fifo(sc, 20);
   2987 		PUT32(sc, RADEON_HOST_DATA0, pixel);
   2988 	}
   2989 	if (rv == GC_ADD) {
   2990 		glyphcache_add(&dp->rd_gc, c, xd, yd);
   2991 	} else
   2992 		if (attr & 1)
   2993 			radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   2994 
   2995 }
   2996 
   2997 static void
   2998 radeonfb_putchar_aa8(void *cookie, int row, int col, u_int c, long attr)
   2999 {
   3000 	struct rasops_info	*ri = cookie;
   3001 	struct vcons_screen	*scr = ri->ri_hw;
   3002 	struct radeonfb_display	*dp = scr->scr_cookie;
   3003 	struct radeonfb_softc	*sc = dp->rd_softc;
   3004 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   3005 	uint32_t bg, fg, latch = 0, bg8, fg8, pixel, gmc;
   3006 	int i, x, y, wi, he, r, g, b, aval;
   3007 	int r1, g1, b1, r0, g0, b0, fgo, bgo;
   3008 	uint8_t *data8;
   3009 	int rv, cnt;
   3010 
   3011 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   3012 		return;
   3013 
   3014 	if (!CHAR_IN_FONT(c, font))
   3015 		return;
   3016 
   3017 	wi = font->fontwidth;
   3018 	he = font->fontheight;
   3019 
   3020 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   3021 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   3022 
   3023 	x = ri->ri_xorigin + col * wi;
   3024 	y = ri->ri_yorigin + row * he;
   3025 
   3026 	if (c == 0x20) {
   3027 		radeonfb_rectfill(dp, x, y, wi, he, bg);
   3028 		if (attr & 1)
   3029 			radeonfb_rectfill(dp, x, y + he - 2, wi, 1, fg);
   3030 		return;
   3031 	}
   3032 	rv = glyphcache_try(&dp->rd_gc, c, x, y, attr);
   3033 	if (rv == GC_OK)
   3034 		return;
   3035 
   3036 	data8 = WSFONT_GLYPH(c, font);
   3037 
   3038 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3039 
   3040 	radeonfb_wait_fifo(sc, 5);
   3041 
   3042 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3043 	    RADEON_GMC_BRUSH_NONE |
   3044 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3045 	    RADEON_ROP3_S |
   3046 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   3047 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3048 	    RADEON_GMC_WR_MSK_DIS |
   3049 	    gmc);
   3050 
   3051 	PUT32(sc, RADEON_DP_CNTL,
   3052 	    RADEON_DST_X_LEFT_TO_RIGHT |
   3053 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   3054 
   3055 	PUT32(sc, RADEON_SRC_X_Y, 0);
   3056 	PUT32(sc, RADEON_DST_X_Y, (x << 16) | y);
   3057 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (wi << 16) | he);
   3058 
   3059 	/*
   3060 	 * we need the RGB colours here, so get offsets into rasops_cmap
   3061 	 */
   3062 	fgo = ((attr >> 24) & 0xf) * 3;
   3063 	bgo = ((attr >> 16) & 0xf) * 3;
   3064 
   3065 	r0 = rasops_cmap[bgo];
   3066 	r1 = rasops_cmap[fgo];
   3067 	g0 = rasops_cmap[bgo + 1];
   3068 	g1 = rasops_cmap[fgo + 1];
   3069 	b0 = rasops_cmap[bgo + 2];
   3070 	b1 = rasops_cmap[fgo + 2];
   3071 #define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6))
   3072 	bg8 = R3G3B2(r0, g0, b0);
   3073 	fg8 = R3G3B2(r1, g1, b1);
   3074 
   3075 	radeonfb_wait_fifo(sc, 20);
   3076 	cnt = 0;
   3077 	for (i = 0; i < ri->ri_fontscale; i++) {
   3078 		aval = *data8;
   3079 		if (aval == 0) {
   3080 			pixel = bg8;
   3081 		} else if (aval == 255) {
   3082 			pixel = fg8;
   3083 		} else {
   3084 			r = aval * r1 + (255 - aval) * r0;
   3085 			g = aval * g1 + (255 - aval) * g0;
   3086 			b = aval * b1 + (255 - aval) * b0;
   3087 			pixel = ((r & 0xe000) >> 8) |
   3088 				((g & 0xe000) >> 11) |
   3089 				((b & 0xc000) >> 14);
   3090 		}
   3091 		latch |= pixel << (8 * (i & 3));
   3092 		/* write in 32bit chunks */
   3093 		if ((i & 3) == 3) {
   3094 			PUT32(sc, RADEON_HOST_DATA0, latch);
   3095 			/*
   3096 			 * not strictly necessary, old data should be shifted
   3097 			 * out
   3098 			 */
   3099 			latch = 0;
   3100 			cnt++;
   3101 			if (cnt > 16) {
   3102 				cnt = 0;
   3103 				radeonfb_wait_fifo(sc, 20);
   3104 			}
   3105 		}
   3106 		data8++;
   3107 	}
   3108 	/* if we have pixels left in latch write them out */
   3109 	if ((i & 3) != 0) {
   3110 		/*
   3111 		 * radeon is weird - apparently leftover pixels are written
   3112 		 * from the middle, not from the left as everything else
   3113 		 */
   3114 		PUT32(sc, RADEON_HOST_DATA0, latch);
   3115 	}
   3116 
   3117 	if (rv == GC_ADD) {
   3118 		glyphcache_add(&dp->rd_gc, c, x, y);
   3119 	} else
   3120 		if (attr & 1)
   3121 			radeonfb_rectfill(dp, x, y + he - 2, wi, 1, fg);
   3122 
   3123 }
   3124 
   3125 /*
   3126  * wrapper for software character drawing
   3127  * just sync the engine and call rasops*_putchar()
   3128  */
   3129 
   3130 #ifndef RADEONFB_ALWAYS_ACCEL_PUTCHAR
   3131 static void
   3132 radeonfb_putchar_wrapper(void *cookie, int row, int col, u_int c, long attr)
   3133 {
   3134 	struct rasops_info	*ri = cookie;
   3135 	struct vcons_screen	*scr = ri->ri_hw;
   3136 	struct radeonfb_display	*dp = scr->scr_cookie;
   3137 
   3138 	radeonfb_engine_idle(dp->rd_softc);
   3139 	dp->rd_putchar(ri, row, col, c, attr);
   3140 }
   3141 #endif
   3142 
   3143 static void
   3144 radeonfb_eraserows(void *cookie, int row, int nrows, long fillattr)
   3145 {
   3146 	struct rasops_info	*ri = cookie;
   3147 	struct vcons_screen	*scr = ri->ri_hw;
   3148 	struct radeonfb_display	*dp = scr->scr_cookie;
   3149 	uint32_t		x, y, w, h, fg, bg, ul;
   3150 
   3151 	/* XXX: check for full emulation mode? */
   3152 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3153 		x = ri->ri_xorigin;
   3154 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3155 		w = ri->ri_emuwidth;
   3156 		h = ri->ri_font->fontheight * nrows;
   3157 
   3158 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   3159 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   3160 	}
   3161 }
   3162 
   3163 static void
   3164 radeonfb_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
   3165 {
   3166 	struct rasops_info	*ri = cookie;
   3167 	struct vcons_screen	*scr = ri->ri_hw;
   3168 	struct radeonfb_display	*dp = scr->scr_cookie;
   3169 	uint32_t		x, ys, yd, w, h;
   3170 
   3171 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3172 		x = ri->ri_xorigin;
   3173 		ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow;
   3174 		yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow;
   3175 		w = ri->ri_emuwidth;
   3176 		h = ri->ri_font->fontheight * nrows;
   3177 		radeonfb_bitblt(dp, x, ys, x, yd, w, h,
   3178 		    RADEON_ROP3_S);
   3179 	}
   3180 }
   3181 
   3182 static void
   3183 radeonfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
   3184 {
   3185 	struct rasops_info	*ri = cookie;
   3186 	struct vcons_screen	*scr = ri->ri_hw;
   3187 	struct radeonfb_display	*dp = scr->scr_cookie;
   3188 	uint32_t		xs, xd, y, w, h;
   3189 
   3190 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3191 		xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol;
   3192 		xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol;
   3193 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3194 		w = ri->ri_font->fontwidth * ncols;
   3195 		h = ri->ri_font->fontheight;
   3196 		radeonfb_bitblt(dp, xs, y, xd, y, w, h,
   3197 		    RADEON_ROP3_S);
   3198 	}
   3199 }
   3200 
   3201 static void
   3202 radeonfb_erasecols(void *cookie, int row, int startcol, int ncols,
   3203     long fillattr)
   3204 {
   3205 	struct rasops_info	*ri = cookie;
   3206 	struct vcons_screen	*scr = ri->ri_hw;
   3207 	struct radeonfb_display	*dp = scr->scr_cookie;
   3208 	uint32_t		x, y, w, h, fg, bg, ul;
   3209 
   3210 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3211 		x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol;
   3212 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3213 		w = ri->ri_font->fontwidth * ncols;
   3214 		h = ri->ri_font->fontheight;
   3215 
   3216 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   3217 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   3218 	}
   3219 }
   3220 
   3221 static void
   3222 radeonfb_cursor(void *cookie, int on, int row, int col)
   3223 {
   3224 	struct rasops_info *ri = cookie;
   3225 	struct vcons_screen *scr = ri->ri_hw;
   3226 	struct radeonfb_display	*dp = scr->scr_cookie;
   3227 	int x, y, wi, he;
   3228 
   3229 	wi = ri->ri_font->fontwidth;
   3230 	he = ri->ri_font->fontheight;
   3231 
   3232 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3233 		x = ri->ri_ccol * wi + ri->ri_xorigin;
   3234 		y = ri->ri_crow * he + ri->ri_yorigin;
   3235 		/* first turn off the old cursor */
   3236 		if (ri->ri_flg & RI_CURSOR) {
   3237 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   3238 			    RADEON_ROP3_Dn);
   3239 			ri->ri_flg &= ~RI_CURSOR;
   3240 		}
   3241 		ri->ri_crow = row;
   3242 		ri->ri_ccol = col;
   3243 		/* then (possibly) turn on the new one */
   3244 		if (on) {
   3245 			x = ri->ri_ccol * wi + ri->ri_xorigin;
   3246 			y = ri->ri_crow * he + ri->ri_yorigin;
   3247 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   3248 			    RADEON_ROP3_Dn);
   3249 			ri->ri_flg |= RI_CURSOR;
   3250 		}
   3251 	} else {
   3252 		scr->scr_ri.ri_crow = row;
   3253 		scr->scr_ri.ri_ccol = col;
   3254 		scr->scr_ri.ri_flg &= ~RI_CURSOR;
   3255 	}
   3256 }
   3257 
   3258 /*
   3259  * Underlying acceleration support.
   3260  */
   3261 
   3262 static void
   3263 radeonfb_rectfill(struct radeonfb_display *dp, int dstx, int dsty,
   3264     int width, int height, uint32_t color)
   3265 {
   3266 	struct radeonfb_softc	*sc = dp->rd_softc;
   3267 	uint32_t		gmc;
   3268 
   3269 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3270 
   3271 	radeonfb_wait_fifo(sc, 6);
   3272 
   3273 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3274 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3275 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3276 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3277 	    RADEON_ROP3_P | gmc);
   3278 
   3279 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, color);
   3280 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3281 	PUT32(sc, RADEON_DP_CNTL,
   3282 	    RADEON_DST_X_LEFT_TO_RIGHT |
   3283 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   3284 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   3285 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   3286 
   3287 }
   3288 
   3289 static void
   3290 radeonfb_rectfill_a(void *cookie, int dstx, int dsty,
   3291     int width, int height, long attr)
   3292 {
   3293 	struct radeonfb_display *dp = cookie;
   3294 
   3295 	radeonfb_rectfill(dp, dstx, dsty, width, height,
   3296 	    dp->rd_vscreen.scr_ri.ri_devcmap[(attr >> 24 & 0xf)]);
   3297 }
   3298 
   3299 static void
   3300 radeonfb_bitblt(void *cookie, int srcx, int srcy,
   3301     int dstx, int dsty, int width, int height, int rop)
   3302 {
   3303 	struct radeonfb_display *dp = cookie;
   3304 	struct radeonfb_softc	*sc = dp->rd_softc;
   3305 	uint32_t		gmc;
   3306 	uint32_t		dir;
   3307 
   3308 	if (dsty < srcy) {
   3309 		dir = RADEON_DST_Y_TOP_TO_BOTTOM;
   3310 	} else {
   3311 		srcy += height - 1;
   3312 		dsty += height - 1;
   3313 		dir = 0;
   3314 	}
   3315 	if (dstx < srcx) {
   3316 		dir |= RADEON_DST_X_LEFT_TO_RIGHT;
   3317 	} else {
   3318 		srcx += width - 1;
   3319 		dstx += width - 1;
   3320 	}
   3321 
   3322 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3323 
   3324 	radeonfb_wait_fifo(sc, 6);
   3325 
   3326 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3327 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3328 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3329 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3330 	    RADEON_DP_SRC_SOURCE_MEMORY |
   3331 	    rop | gmc);
   3332 
   3333 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3334 	PUT32(sc, RADEON_DP_CNTL, dir);
   3335 	PUT32(sc, RADEON_SRC_Y_X, (srcy << 16) | srcx);
   3336 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   3337 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   3338 }
   3339 
   3340 static void
   3341 radeonfb_engine_idle(struct radeonfb_softc *sc)
   3342 {
   3343 
   3344 	radeonfb_wait_fifo(sc, 64);
   3345 	while ((GET32(sc, RADEON_RBBM_STATUS) &
   3346 			RADEON_RBBM_ACTIVE) != 0);
   3347 	radeonfb_engine_flush(sc);
   3348 }
   3349 
   3350 static inline void
   3351 radeonfb_wait_fifo(struct radeonfb_softc *sc, int n)
   3352 {
   3353 	int	i;
   3354 
   3355 	for (i = RADEON_TIMEOUT; i; i--) {
   3356 		if ((GET32(sc, RADEON_RBBM_STATUS) &
   3357 			RADEON_RBBM_FIFOCNT_MASK) >= n)
   3358 			return;
   3359 	}
   3360 #ifdef	DIAGNOSTIC
   3361 	if (!i)
   3362 		printf("%s: timed out waiting for fifo (%x)\n",
   3363 		    XNAME(sc), GET32(sc, RADEON_RBBM_STATUS));
   3364 #endif
   3365 }
   3366 
   3367 static void
   3368 radeonfb_engine_flush(struct radeonfb_softc *sc)
   3369 {
   3370 	int	i = 0;
   3371 
   3372 	if (IS_R300(sc)) {
   3373 		SET32(sc, R300_DSTCACHE_CTLSTAT, R300_RB2D_DC_FLUSH_ALL);
   3374 		while (GET32(sc, R300_DSTCACHE_CTLSTAT) & R300_RB2D_DC_BUSY) {
   3375 			i++;
   3376 		}
   3377 	} else {
   3378 		SET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT,
   3379 		    RADEON_RB2D_DC_FLUSH_ALL);
   3380 		while (GET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT) &
   3381 			RADEON_RB2D_DC_BUSY) {
   3382 			i++;
   3383 		}
   3384 	}
   3385 #ifdef DIAGNOSTIC
   3386 	if (i > RADEON_TIMEOUT)
   3387 		printf("%s: engine flush timed out!\n", XNAME(sc));
   3388 #endif
   3389 }
   3390 
   3391 static inline void
   3392 radeonfb_unclip(struct radeonfb_softc *sc)
   3393 {
   3394 
   3395 	radeonfb_wait_fifo(sc, 2);
   3396 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   3397 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   3398 }
   3399 
   3400 static void
   3401 radeonfb_engine_init(struct radeonfb_display *dp)
   3402 {
   3403 	struct radeonfb_softc	*sc = dp->rd_softc;
   3404 	uint32_t		pitch;
   3405 
   3406 	/* no 3D */
   3407 	PUT32(sc, RADEON_RB3D_CNTL, 0);
   3408 
   3409 	radeonfb_engine_reset(sc);
   3410 	pitch = ((dp->rd_virtx * (dp->rd_bpp / 8) + 0x3f)) >> 6;
   3411 
   3412 	radeonfb_wait_fifo(sc, 1);
   3413 	if (!IS_R300(sc))
   3414 		PUT32(sc, RADEON_RB2D_DSTCACHE_MODE, 0);
   3415 
   3416 	radeonfb_wait_fifo(sc, 3);
   3417 	PUT32(sc, RADEON_DEFAULT_PITCH_OFFSET,
   3418 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   3419 
   3420 
   3421 	PUT32(sc, RADEON_DST_PITCH_OFFSET,
   3422 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   3423 	PUT32(sc, RADEON_SRC_PITCH_OFFSET,
   3424 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   3425 
   3426 	(void)GET32(sc, RADEON_DP_DATATYPE);
   3427 
   3428 	/* default scissors -- no clipping */
   3429 	radeonfb_wait_fifo(sc, 1);
   3430 	PUT32(sc, RADEON_DEFAULT_SC_BOTTOM_RIGHT,
   3431 	    RADEON_DEFAULT_SC_RIGHT_MAX | RADEON_DEFAULT_SC_BOTTOM_MAX);
   3432 
   3433 	radeonfb_wait_fifo(sc, 1);
   3434 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3435 	    (dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT) |
   3436 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3437 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3438 	    RADEON_GMC_SRC_DATATYPE_COLOR);
   3439 
   3440 	radeonfb_wait_fifo(sc, 10);
   3441 	PUT32(sc, RADEON_DST_LINE_START, 0);
   3442 	PUT32(sc, RADEON_DST_LINE_END, 0);
   3443 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, 0xffffffff);
   3444 	PUT32(sc, RADEON_DP_BRUSH_BKGD_CLR, 0);
   3445 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, 0xffffffff);
   3446 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, 0);
   3447 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3448 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   3449 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   3450 	PUT32(sc, RADEON_AUX_SC_CNTL, 0);
   3451 	radeonfb_engine_idle(sc);
   3452 }
   3453 
   3454 static void
   3455 radeonfb_engine_reset(struct radeonfb_softc *sc)
   3456 {
   3457 	uint32_t	hpc, rbbm, mclkcntl, clkindex;
   3458 
   3459 	radeonfb_engine_flush(sc);
   3460 
   3461 	clkindex = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   3462 	if (HAS_R300CG(sc))
   3463 		radeonfb_r300cg_workaround(sc);
   3464 	mclkcntl = GETPLL(sc, RADEON_MCLK_CNTL);
   3465 
   3466 	/*
   3467 	 * According to comments in XFree code, resetting the HDP via
   3468 	 * the RBBM_SOFT_RESET can cause bad behavior on some systems.
   3469 	 * So we use HOST_PATH_CNTL instead.
   3470 	 */
   3471 
   3472 	hpc = GET32(sc, RADEON_HOST_PATH_CNTL);
   3473 	rbbm = GET32(sc, RADEON_RBBM_SOFT_RESET);
   3474 	if (IS_R300(sc)) {
   3475 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   3476 		    RADEON_SOFT_RESET_CP |
   3477 		    RADEON_SOFT_RESET_HI |
   3478 		    RADEON_SOFT_RESET_E2);
   3479 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3480 		PUT32(sc, RADEON_RBBM_SOFT_RESET, 0);
   3481 		/*
   3482 		 * XXX: this bit is not defined in any ATI docs I have,
   3483 		 * nor in the XFree code, but XFree does it.  Why?
   3484 		 */
   3485 		SET32(sc, RADEON_RB2D_DSTCACHE_MODE, (1<<17));
   3486 	} else {
   3487 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   3488 		    RADEON_SOFT_RESET_CP |
   3489 		    RADEON_SOFT_RESET_SE |
   3490 		    RADEON_SOFT_RESET_RE |
   3491 		    RADEON_SOFT_RESET_PP |
   3492 		    RADEON_SOFT_RESET_E2 |
   3493 		    RADEON_SOFT_RESET_RB);
   3494 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3495 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm &
   3496 		    ~(RADEON_SOFT_RESET_CP |
   3497 			RADEON_SOFT_RESET_SE |
   3498 			RADEON_SOFT_RESET_RE |
   3499 			RADEON_SOFT_RESET_PP |
   3500 			RADEON_SOFT_RESET_E2 |
   3501 			RADEON_SOFT_RESET_RB));
   3502 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3503 	}
   3504 
   3505 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc | RADEON_HDP_SOFT_RESET);
   3506 	GET32(sc, RADEON_HOST_PATH_CNTL);
   3507 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc);
   3508 
   3509 	if (IS_R300(sc))
   3510 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm);
   3511 
   3512 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, clkindex);
   3513 	PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   3514 	PUTPLL(sc, RADEON_MCLK_CNTL, mclkcntl);
   3515 
   3516 	if (HAS_R300CG(sc))
   3517 		radeonfb_r300cg_workaround(sc);
   3518 }
   3519 
   3520 static int
   3521 radeonfb_set_curpos(struct radeonfb_display *dp, struct wsdisplay_curpos *pos)
   3522 {
   3523 	int		x, y;
   3524 
   3525 	x = pos->x;
   3526 	y = pos->y;
   3527 
   3528 	/*
   3529 	 * This doesn't let a cursor move off the screen.  I'm not
   3530 	 * sure if this will have negative effects for e.g. Xinerama.
   3531 	 * I'd guess Xinerama handles it by changing the cursor shape,
   3532 	 * but that needs verification.
   3533 	 */
   3534 	if (x >= dp->rd_virtx)
   3535 		x = dp->rd_virtx - 1;
   3536 	if (x < 0)
   3537 		x = 0;
   3538 	if (y >= dp->rd_virty)
   3539 		y = dp->rd_virty - 1;
   3540 	if (y < 0)
   3541 		y = 0;
   3542 
   3543 	dp->rd_cursor.rc_pos.x = x;
   3544 	dp->rd_cursor.rc_pos.y = y;
   3545 
   3546 	radeonfb_cursor_position(dp);
   3547 	return 0;
   3548 }
   3549 
   3550 static int
   3551 radeonfb_set_cursor(struct radeonfb_display *dp, struct wsdisplay_cursor *wc)
   3552 {
   3553 	unsigned	flags;
   3554 
   3555 	uint8_t		r[2], g[2], b[2];
   3556 	unsigned	index, count;
   3557 	int		i, err;
   3558 	int		pitch, size;
   3559 	struct radeonfb_cursor	nc;
   3560 
   3561 	flags = wc->which;
   3562 
   3563 	/* copy old values */
   3564 	nc = dp->rd_cursor;
   3565 
   3566 	if (flags & WSDISPLAY_CURSOR_DOCMAP) {
   3567 		index = wc->cmap.index;
   3568 		count = wc->cmap.count;
   3569 
   3570 		if (index >= 2 || (index + count) > 2)
   3571 			return EINVAL;
   3572 
   3573 		err = copyin(wc->cmap.red, &r[index], count);
   3574 		if (err)
   3575 			return err;
   3576 		err = copyin(wc->cmap.green, &g[index], count);
   3577 		if (err)
   3578 			return err;
   3579 		err = copyin(wc->cmap.blue, &b[index], count);
   3580 		if (err)
   3581 			return err;
   3582 
   3583 		for (i = index; i < index + count; i++) {
   3584 			nc.rc_cmap[i] =
   3585 			    (r[i] << 16) + (g[i] << 8) + (b[i] << 0);
   3586 		}
   3587 	}
   3588 
   3589 	if (flags & WSDISPLAY_CURSOR_DOSHAPE) {
   3590 		if ((wc->size.x > RADEON_CURSORMAXX) ||
   3591 		    (wc->size.y > RADEON_CURSORMAXY))
   3592 			return EINVAL;
   3593 
   3594 		/* figure bytes per line */
   3595 		pitch = (wc->size.x + 7) / 8;
   3596 		size = pitch * wc->size.y;
   3597 
   3598 		/* clear the old cursor and mask */
   3599 		memset(nc.rc_image, 0, 512);
   3600 		memset(nc.rc_mask, 0, 512);
   3601 
   3602 		nc.rc_size = wc->size;
   3603 
   3604 		if ((err = copyin(wc->image, nc.rc_image, size)) != 0)
   3605 			return err;
   3606 
   3607 		if ((err = copyin(wc->mask, nc.rc_mask, size)) != 0)
   3608 			return err;
   3609 	}
   3610 
   3611 	if (flags & WSDISPLAY_CURSOR_DOHOT) {
   3612 		nc.rc_hot = wc->hot;
   3613 		if (nc.rc_hot.x >= nc.rc_size.x)
   3614 			nc.rc_hot.x = nc.rc_size.x - 1;
   3615 		if (nc.rc_hot.y >= nc.rc_size.y)
   3616 			nc.rc_hot.y = nc.rc_size.y - 1;
   3617 	}
   3618 
   3619 	if (flags & WSDISPLAY_CURSOR_DOPOS) {
   3620 		nc.rc_pos = wc->pos;
   3621 		if (nc.rc_pos.x >= dp->rd_virtx)
   3622 			nc.rc_pos.x = dp->rd_virtx - 1;
   3623 #if 0
   3624 		if (nc.rc_pos.x < 0)
   3625 			nc.rc_pos.x = 0;
   3626 #endif
   3627 		if (nc.rc_pos.y >= dp->rd_virty)
   3628 			nc.rc_pos.y = dp->rd_virty - 1;
   3629 #if 0
   3630 		if (nc.rc_pos.y < 0)
   3631 			nc.rc_pos.y = 0;
   3632 #endif
   3633 	}
   3634 	if (flags & WSDISPLAY_CURSOR_DOCUR) {
   3635 		nc.rc_visible = wc->enable;
   3636 	}
   3637 
   3638 	dp->rd_cursor = nc;
   3639 	radeonfb_cursor_update(dp, wc->which);
   3640 
   3641 	return 0;
   3642 }
   3643 
   3644 static uint8_t
   3645 radeonfb_backwards(uint8_t d)
   3646 {
   3647 	uint8_t l;
   3648 
   3649 	l = d << 7;
   3650 	l |= ((d & 0x02) << 5);
   3651 	l |= ((d & 0x04) << 3);
   3652 	l |= ((d & 0x08) << 1);
   3653 	l |= ((d & 0x10) >> 1);
   3654 	l |= ((d & 0x20) >> 3);
   3655 	l |= ((d & 0x40) >> 5);
   3656 	l |= ((d & 0x80) >> 7);
   3657 	return l;
   3658 }
   3659 
   3660 /*
   3661  * Change the cursor shape.  Call this with the cursor locked to avoid
   3662  * flickering/tearing.
   3663  */
   3664 static void
   3665 radeonfb_cursor_shape(struct radeonfb_display *dp)
   3666 {
   3667 	uint8_t	and[512], xor[512];
   3668 	int	i, j, src, dst /* , pitch */;
   3669 	const uint8_t	*msk = dp->rd_cursor.rc_mask;
   3670 	const uint8_t	*img = dp->rd_cursor.rc_image;
   3671 
   3672 	/*
   3673 	 * Radeon cursor data interleaves one line of AND data followed
   3674 	 * by a line of XOR data.  (Each line corresponds to a whole hardware
   3675 	 * pitch - i.e. 64 pixels or 8 bytes.)
   3676 	 *
   3677 	 * The cursor is displayed using the following table:
   3678 	 *
   3679 	 * AND	XOR	Result
   3680 	 * ----------------------
   3681 	 *  0    0	Cursor color 0
   3682 	 *  0	 1	Cursor color 1
   3683 	 *  1	 0	Transparent
   3684 	 *  1	 1	Complement of background
   3685 	 *
   3686 	 * Our masks are therefore different from what we were passed.
   3687 	 * Passed in, I'm assuming the data represents either color 0 or 1,
   3688 	 * and a mask, so the passed in table looks like:
   3689 	 *
   3690 	 * IMG	Mask	Result
   3691 	 * -----------------------
   3692 	 *  0	 0	Transparent
   3693 	 *  0	 1	Cursor color 0
   3694 	 *  1	 0	Transparent
   3695 	 *  1	 1	Cursor color 1
   3696 	 *
   3697 	 * IF mask bit == 1, AND = 0, XOR = color.
   3698 	 * IF mask bit == 0, AND = 1, XOR = 0.
   3699 	 *
   3700 	 * hence:	AND = ~(mask);	XOR = color & ~(mask);
   3701 	 */
   3702 
   3703 	/* pitch = ((dp->rd_cursor.rc_size.x + 7) / 8); */
   3704 
   3705 	/* start by assuming all bits are transparent */
   3706 	memset(and, 0xff, 512);
   3707 	memset(xor, 0x00, 512);
   3708 
   3709 	src = 0;
   3710 	dst = 0;
   3711 	for (i = 0; i < 64; i++) {
   3712 		for (j = 0; j < 64; j += 8) {
   3713 			if ((i < dp->rd_cursor.rc_size.y) &&
   3714 			    (j < dp->rd_cursor.rc_size.x)) {
   3715 
   3716 				/* take care to leave odd bits alone */
   3717 				and[dst] &= ~(msk[src]);
   3718 				xor[dst] = img[src] & msk[src];
   3719 				src++;
   3720 			}
   3721 			dst++;
   3722 		}
   3723 	}
   3724 
   3725 	for (i = 0; i < 512; i++) {
   3726 		and[i] = radeonfb_backwards(and[i]);
   3727 		xor[i] = radeonfb_backwards(xor[i]);
   3728 	}
   3729 
   3730 	/* copy the image into place */
   3731 	for (i = 0; i < 64; i++) {
   3732 		memcpy((uint8_t *)dp->rd_curptr + (i * 16),
   3733 		    &and[i * 8], 8);
   3734 		memcpy((uint8_t *)dp->rd_curptr + (i * 16) + 8,
   3735 		    &xor[i * 8], 8);
   3736 	}
   3737 }
   3738 
   3739 static void
   3740 radeonfb_cursor_position(struct radeonfb_display *dp)
   3741 {
   3742 	struct radeonfb_softc	*sc = dp->rd_softc;
   3743 	uint32_t		offset, hvoff, hvpos;	/* registers */
   3744 	uint32_t		coff;			/* cursor offset */
   3745 	int			i, x, y, xoff, yoff, crtcoff;
   3746 
   3747 	/*
   3748 	 * XXX: this also needs to handle pan/scan
   3749 	 */
   3750 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3751 
   3752 		struct radeonfb_crtc	*rcp = &dp->rd_crtcs[i];
   3753 
   3754 		if (rcp->rc_number) {
   3755 			offset = RADEON_CUR2_OFFSET;
   3756 			hvoff = RADEON_CUR2_HORZ_VERT_OFF;
   3757 			hvpos = RADEON_CUR2_HORZ_VERT_POSN;
   3758 			crtcoff = RADEON_CRTC2_OFFSET;
   3759 		} else {
   3760 			offset = RADEON_CUR_OFFSET;
   3761 			hvoff = RADEON_CUR_HORZ_VERT_OFF;
   3762 			hvpos = RADEON_CUR_HORZ_VERT_POSN;
   3763 			crtcoff = RADEON_CRTC_OFFSET;
   3764 		}
   3765 
   3766 		x = dp->rd_cursor.rc_pos.x;
   3767 		y = dp->rd_cursor.rc_pos.y;
   3768 
   3769 		while (y < rcp->rc_yoffset) {
   3770 			rcp->rc_yoffset -= RADEON_PANINCREMENT;
   3771 		}
   3772 		while (y >= (rcp->rc_yoffset + rcp->rc_videomode.vdisplay)) {
   3773 			rcp->rc_yoffset += RADEON_PANINCREMENT;
   3774 		}
   3775 		while (x < rcp->rc_xoffset) {
   3776 			rcp->rc_xoffset -= RADEON_PANINCREMENT;
   3777 		}
   3778 		while (x >= (rcp->rc_xoffset + rcp->rc_videomode.hdisplay)) {
   3779 			rcp->rc_xoffset += RADEON_PANINCREMENT;
   3780 		}
   3781 
   3782 		/* adjust for the cursor's hotspot */
   3783 		x -= dp->rd_cursor.rc_hot.x;
   3784 		y -= dp->rd_cursor.rc_hot.y;
   3785 		xoff = yoff = 0;
   3786 
   3787 		if (x >= dp->rd_virtx)
   3788 			x = dp->rd_virtx - 1;
   3789 		if (y >= dp->rd_virty)
   3790 			y = dp->rd_virty - 1;
   3791 
   3792 		/* now adjust cursor so it is relative to viewport */
   3793 		x -= rcp->rc_xoffset;
   3794 		y -= rcp->rc_yoffset;
   3795 
   3796 		/*
   3797 		 * no need to check for fall off, because we should
   3798 		 * never move off the screen entirely!
   3799 		 */
   3800 		coff = 0;
   3801 		if (x < 0) {
   3802 			xoff = -x;
   3803 			x = 0;
   3804 		}
   3805 		if (y < 0) {
   3806 			yoff = -y;
   3807 			y = 0;
   3808 			coff = (yoff * 2) * 8;
   3809 		}
   3810 
   3811 		/* pan the display */
   3812 		PUT32(sc, crtcoff, (rcp->rc_yoffset * dp->rd_stride) +
   3813 		    rcp->rc_xoffset);
   3814 
   3815 		PUT32(sc, offset, (dp->rd_curoff + coff) | RADEON_CUR_LOCK);
   3816 		PUT32(sc, hvoff, (xoff << 16) | (yoff) | RADEON_CUR_LOCK);
   3817 		/* NB: this unlocks the cursor */
   3818 		PUT32(sc, hvpos, (x << 16) | y);
   3819 	}
   3820 }
   3821 
   3822 static void
   3823 radeonfb_cursor_visible(struct radeonfb_display *dp)
   3824 {
   3825 	int		i;
   3826 	uint32_t	gencntl, bit;
   3827 
   3828 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3829 		if (dp->rd_crtcs[i].rc_number) {
   3830 			gencntl = RADEON_CRTC2_GEN_CNTL;
   3831 			bit = RADEON_CRTC2_CUR_EN;
   3832 		} else {
   3833 			gencntl = RADEON_CRTC_GEN_CNTL;
   3834 			bit = RADEON_CRTC_CUR_EN;
   3835 		}
   3836 
   3837 		if (dp->rd_cursor.rc_visible)
   3838 			SET32(dp->rd_softc, gencntl, bit);
   3839 		else
   3840 			CLR32(dp->rd_softc, gencntl, bit);
   3841 	}
   3842 }
   3843 
   3844 static void
   3845 radeonfb_cursor_cmap(struct radeonfb_display *dp)
   3846 {
   3847 	int		i;
   3848 	uint32_t	c0reg, c1reg;
   3849 	struct radeonfb_softc	*sc = dp->rd_softc;
   3850 
   3851 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3852 		if (dp->rd_crtcs[i].rc_number) {
   3853 			c0reg = RADEON_CUR2_CLR0;
   3854 			c1reg = RADEON_CUR2_CLR1;
   3855 		} else {
   3856 			c0reg = RADEON_CUR_CLR0;
   3857 			c1reg = RADEON_CUR_CLR1;
   3858 		}
   3859 
   3860 		PUT32(sc, c0reg, dp->rd_cursor.rc_cmap[0]);
   3861 		PUT32(sc, c1reg, dp->rd_cursor.rc_cmap[1]);
   3862 	}
   3863 }
   3864 
   3865 static void
   3866 radeonfb_cursor_update(struct radeonfb_display *dp, unsigned which)
   3867 {
   3868 	struct radeonfb_softc	*sc;
   3869 	int		i;
   3870 
   3871 	sc = dp->rd_softc;
   3872 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3873 		if (dp->rd_crtcs[i].rc_number) {
   3874 			SET32(sc, RADEON_CUR2_OFFSET, RADEON_CUR_LOCK);
   3875 		} else {
   3876 			SET32(sc, RADEON_CUR_OFFSET,RADEON_CUR_LOCK);
   3877 		}
   3878 	}
   3879 
   3880 	if (which & WSDISPLAY_CURSOR_DOCMAP)
   3881 		radeonfb_cursor_cmap(dp);
   3882 
   3883 	if (which & WSDISPLAY_CURSOR_DOSHAPE)
   3884 		radeonfb_cursor_shape(dp);
   3885 
   3886 	if (which & WSDISPLAY_CURSOR_DOCUR)
   3887 		radeonfb_cursor_visible(dp);
   3888 
   3889 	/* this one is unconditional, because it updates other stuff */
   3890 	radeonfb_cursor_position(dp);
   3891 }
   3892 
   3893 static struct videomode *
   3894 radeonfb_best_refresh(struct videomode *m1, struct videomode *m2)
   3895 {
   3896 	int	r1, r2;
   3897 
   3898 	/* otherwise pick the higher refresh rate */
   3899 	r1 = DIVIDE(DIVIDE(m1->dot_clock, m1->htotal), m1->vtotal);
   3900 	r2 = DIVIDE(DIVIDE(m2->dot_clock, m2->htotal), m2->vtotal);
   3901 
   3902 	return (r1 < r2 ? m2 : m1);
   3903 }
   3904 
   3905 static const struct videomode *
   3906 radeonfb_port_mode(struct radeonfb_softc *sc, struct radeonfb_port *rp,
   3907     int x, int y)
   3908 {
   3909 	struct edid_info	*ep = &rp->rp_edid;
   3910 	struct videomode	*vmp = NULL;
   3911 	int			i;
   3912 
   3913 	if (!rp->rp_edid_valid) {
   3914 		/* fallback to safe mode */
   3915 		return radeonfb_modelookup(sc->sc_defaultmode);
   3916 	}
   3917 
   3918 	/* always choose the preferred mode first! */
   3919 	if (ep->edid_preferred_mode) {
   3920 
   3921 		/* XXX: add auto-stretching support for native mode */
   3922 
   3923 		/* this may want panning to occur, btw */
   3924 		if ((ep->edid_preferred_mode->hdisplay <= x) &&
   3925 		    (ep->edid_preferred_mode->vdisplay <= y))
   3926 			return ep->edid_preferred_mode;
   3927 	}
   3928 
   3929 	for (i = 0; i < ep->edid_nmodes; i++) {
   3930 		/*
   3931 		 * We elect to pick a resolution that is too large for
   3932 		 * the monitor than one that is too small.  This means
   3933 		 * that we will prefer to pan rather than to try to
   3934 		 * center a smaller display on a larger screen.  In
   3935 		 * practice, this shouldn't matter because if a
   3936 		 * monitor can support a larger resolution, it can
   3937 		 * probably also support the smaller.  A specific
   3938 		 * exception is fixed format panels, but hopefully
   3939 		 * they are properly dealt with by the "autostretch"
   3940 		 * logic above.
   3941 		 */
   3942 		if ((ep->edid_modes[i].hdisplay > x) ||
   3943 		    (ep->edid_modes[i].vdisplay > y)) {
   3944 			continue;
   3945 		}
   3946 
   3947 		/*
   3948 		 * at this point, the display mode is no larger than
   3949 		 * what we've requested.
   3950 		 */
   3951 		if (vmp == NULL)
   3952 			vmp = &ep->edid_modes[i];
   3953 
   3954 		/* eliminate smaller modes */
   3955 		if ((vmp->hdisplay >= ep->edid_modes[i].hdisplay) ||
   3956 		    (vmp->vdisplay >= ep->edid_modes[i].vdisplay))
   3957 			continue;
   3958 
   3959 		if ((vmp->hdisplay < ep->edid_modes[i].hdisplay) ||
   3960 		    (vmp->vdisplay < ep->edid_modes[i].vdisplay)) {
   3961 			vmp = &ep->edid_modes[i];
   3962 			continue;
   3963 		}
   3964 
   3965 		KASSERT(vmp->hdisplay == ep->edid_modes[i].hdisplay);
   3966 		KASSERT(vmp->vdisplay == ep->edid_modes[i].vdisplay);
   3967 
   3968 		vmp = radeonfb_best_refresh(vmp, &ep->edid_modes[i]);
   3969 	}
   3970 
   3971 	return (vmp ? vmp : radeonfb_modelookup(sc->sc_defaultmode));
   3972 }
   3973 
   3974 static int
   3975 radeonfb_hasres(struct videomode *list, int nlist, int x, int y)
   3976 {
   3977 	int	i;
   3978 
   3979 	for (i = 0; i < nlist; i++) {
   3980 		if ((x == list[i].hdisplay) &&
   3981 		    (y == list[i].vdisplay)) {
   3982 			return 1;
   3983 		}
   3984 	}
   3985 	return 0;
   3986 }
   3987 
   3988 static void
   3989 radeonfb_pickres(struct radeonfb_display *dp, uint16_t *x, uint16_t *y,
   3990     int pan)
   3991 {
   3992 	struct radeonfb_port	*rp;
   3993 	struct edid_info	*ep;
   3994 	int			i, j;
   3995 
   3996 	*x = 0;
   3997 	*y = 0;
   3998 
   3999 	if (pan) {
   4000 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   4001 			rp = dp->rd_crtcs[i].rc_port;
   4002 			ep = &rp->rp_edid;
   4003 			if (!rp->rp_edid_valid) {
   4004 				/* monitor not present */
   4005 				continue;
   4006 			}
   4007 
   4008 			/*
   4009 			 * For now we are ignoring "conflict" that
   4010 			 * could occur when mixing some modes like
   4011 			 * 1280x1024 and 1400x800.  It isn't clear
   4012 			 * which is better, so the first one wins.
   4013 			 */
   4014 			for (j = 0; j < ep->edid_nmodes; j++) {
   4015 				/*
   4016 				 * ignore resolutions that are too big for
   4017 				 * the radeon
   4018 				 */
   4019 				if (ep->edid_modes[j].hdisplay >
   4020 				    dp->rd_softc->sc_maxx)
   4021 					continue;
   4022 				if (ep->edid_modes[j].vdisplay >
   4023 				    dp->rd_softc->sc_maxy)
   4024 					continue;
   4025 
   4026 				/*
   4027 				 * pick largest resolution, the
   4028 				 * smaller monitor will pan
   4029 				 */
   4030 				if ((ep->edid_modes[j].hdisplay >= *x) &&
   4031 				    (ep->edid_modes[j].vdisplay >= *y)) {
   4032 					*x = ep->edid_modes[j].hdisplay;
   4033 					*y = ep->edid_modes[j].vdisplay;
   4034 				}
   4035 			}
   4036 		}
   4037 
   4038 	} else {
   4039 		struct videomode	modes[64];
   4040 		int			nmodes = 0;
   4041 		int			valid = 0;
   4042 
   4043 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   4044 			/*
   4045 			 * pick the largest resolution in common.
   4046 			 */
   4047 			rp = dp->rd_crtcs[i].rc_port;
   4048 			ep = &rp->rp_edid;
   4049 
   4050 			if (!rp->rp_edid_valid)
   4051 				continue;
   4052 
   4053 			if (!valid) {
   4054 				/*
   4055 				 * Pick the preferred mode for this port
   4056 				 * if available.
   4057 				 */
   4058 				if (ep->edid_preferred_mode) {
   4059 					struct videomode *vmp =
   4060 						ep->edid_preferred_mode;
   4061 
   4062 					if ((vmp->hdisplay <=
   4063 					     dp->rd_softc->sc_maxx) &&
   4064 					    (vmp->vdisplay <=
   4065 					     dp->rd_softc->sc_maxy))
   4066 						modes[nmodes++] = *vmp;
   4067 				} else {
   4068 
   4069 					/* initialize starting list */
   4070 					for (j = 0; j < ep->edid_nmodes; j++) {
   4071 						/*
   4072 						 * ignore resolutions that are
   4073 						 * too big for the radeon
   4074 						 */
   4075 						if (ep->edid_modes[j].hdisplay >
   4076 						    dp->rd_softc->sc_maxx)
   4077 							continue;
   4078 						if (ep->edid_modes[j].vdisplay >
   4079 						    dp->rd_softc->sc_maxy)
   4080 							continue;
   4081 
   4082 						modes[nmodes] =
   4083 							ep->edid_modes[j];
   4084 						nmodes++;
   4085 					}
   4086 				}
   4087 				valid = 1;
   4088 			} else {
   4089 				/* merge into preexisting list */
   4090 				for (j = 0; j < nmodes; j++) {
   4091 					if (!radeonfb_hasres(ep->edid_modes,
   4092 						ep->edid_nmodes,
   4093 						modes[j].hdisplay,
   4094 						modes[j].vdisplay)) {
   4095 						modes[j] = modes[nmodes];
   4096 						j--;
   4097 						nmodes--;
   4098 					}
   4099 				}
   4100 			}
   4101 		}
   4102 
   4103 		/* now we have to pick from the merged list */
   4104 		for (i = 0; i < nmodes; i++) {
   4105 			if ((modes[i].hdisplay >= *x) &&
   4106 			    (modes[i].vdisplay >= *y)) {
   4107 				*x = modes[i].hdisplay;
   4108 				*y = modes[i].vdisplay;
   4109 			}
   4110 		}
   4111 	}
   4112 
   4113 	if ((*x == 0) || (*y == 0)) {
   4114 		/* fallback to safe mode */
   4115 		*x = 640;
   4116 		*y = 480;
   4117 	}
   4118 }
   4119 
   4120 /*
   4121  * backlight levels are linear on:
   4122  * - RV200, RV250, RV280, RV350
   4123  * - but NOT on PowerBook4,3 6,3 6,5
   4124  * according to Linux' radeonfb
   4125  */
   4126 
   4127 /* Get the current backlight level for the display.  */
   4128 
   4129 static int
   4130 radeonfb_get_backlight(struct radeonfb_display *dp)
   4131 {
   4132 	int s;
   4133 	uint32_t level;
   4134 
   4135 	s = spltty();
   4136 
   4137 	level = radeonfb_get32(dp->rd_softc, RADEON_LVDS_GEN_CNTL);
   4138 	level &= RADEON_LVDS_BL_MOD_LEV_MASK;
   4139 	level >>= RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4140 
   4141 	/*
   4142 	 * On some chips, we should negate the backlight level.
   4143 	 * XXX Find out on which chips.
   4144 	 */
   4145 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT)
   4146 	level = RADEONFB_BACKLIGHT_MAX - level;
   4147 
   4148 	splx(s);
   4149 
   4150 	return level;
   4151 }
   4152 
   4153 /* Set the backlight to the given level for the display.  */
   4154 static void
   4155 radeonfb_switch_backlight(struct radeonfb_display *dp, int on)
   4156 {
   4157 	if (dp->rd_bl_on == on)
   4158 		return;
   4159 	dp->rd_bl_on = on;
   4160 	radeonfb_set_backlight(dp, dp->rd_bl_level);
   4161 }
   4162 
   4163 static int
   4164 radeonfb_set_backlight(struct radeonfb_display *dp, int level)
   4165 {
   4166 	struct radeonfb_softc *sc = dp->rd_softc;;
   4167 	int rlevel, s;
   4168 	uint32_t lvds;
   4169 
   4170 	if(!sc->sc_mapped)
   4171 		return 0;
   4172 
   4173 	s = spltty();
   4174 
   4175 	dp->rd_bl_level = level;
   4176 	if (dp->rd_bl_on == 0)
   4177 		level = 0;
   4178 
   4179 	if (level < 0)
   4180 		level = 0;
   4181 	else if (level >= RADEONFB_BACKLIGHT_MAX)
   4182 		level = RADEONFB_BACKLIGHT_MAX;
   4183 
   4184 	/* On some chips, we should negate the backlight level. */
   4185 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT) {
   4186 		rlevel = RADEONFB_BACKLIGHT_MAX - level;
   4187 	} else
   4188 	rlevel = level;
   4189 
   4190 	callout_stop(&dp->rd_bl_lvds_co);
   4191 	radeonfb_engine_idle(sc);
   4192 
   4193 	/*
   4194 	 * Turn off the display if the backlight is set to 0, since the
   4195 	 * display is useless without backlight anyway.
   4196 	 */
   4197 	if (level == 0)
   4198 		radeonfb_blank(dp, 1);
   4199 	else if (radeonfb_get_backlight(dp) == 0)
   4200 		radeonfb_blank(dp, 0);
   4201 
   4202 	lvds = radeonfb_get32(sc, RADEON_LVDS_GEN_CNTL);
   4203 	lvds &= ~RADEON_LVDS_DISPLAY_DIS;
   4204 	if (!(lvds & RADEON_LVDS_BLON) || !(lvds & RADEON_LVDS_ON)) {
   4205 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_DIGON;
   4206 		lvds |= RADEON_LVDS_BLON | RADEON_LVDS_EN;
   4207 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   4208 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   4209 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4210 		lvds |= RADEON_LVDS_ON;
   4211 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_BL_MOD_EN;
   4212 	} else {
   4213 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   4214 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4215 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   4216 	}
   4217 
   4218 	dp->rd_bl_lvds_val &= ~RADEON_LVDS_STATE_MASK;
   4219 	dp->rd_bl_lvds_val |= lvds & RADEON_LVDS_STATE_MASK;
   4220 	/* XXX What is the correct delay? */
   4221 	callout_schedule(&dp->rd_bl_lvds_co, 200 * hz);
   4222 
   4223 	splx(s);
   4224 
   4225 	return 0;
   4226 }
   4227 
   4228 /*
   4229  * Callout function for delayed operations on the LVDS_GEN_CNTL register.
   4230  * Set the delayed bits in the register, and clear the stored delayed
   4231  * value.
   4232  */
   4233 
   4234 static void radeonfb_lvds_callout(void *arg)
   4235 {
   4236 	struct radeonfb_display *dp = arg;
   4237 	int s;
   4238 
   4239 	s = splhigh();
   4240 
   4241 	radeonfb_mask32(dp->rd_softc, RADEON_LVDS_GEN_CNTL, ~0,
   4242 			dp->rd_bl_lvds_val);
   4243 	dp->rd_bl_lvds_val = 0;
   4244 
   4245 	splx(s);
   4246 }
   4247 
   4248 static void
   4249 radeonfb_brightness_up(device_t dev)
   4250 {
   4251 	struct radeonfb_softc *sc = device_private(dev);
   4252 	struct radeonfb_display *dp = &sc->sc_displays[0];
   4253 	int level;
   4254 
   4255 	/* we assume the main display is the first one - need a better way */
   4256 	if (sc->sc_ndisplays < 1) return;
   4257 	/* make sure pushing the hotkeys always has an effect */
   4258 	dp->rd_bl_on = 1;
   4259 	level = dp->rd_bl_level;
   4260 	level = min(RADEONFB_BACKLIGHT_MAX, level + 5);
   4261 	radeonfb_set_backlight(dp, level);
   4262 }
   4263 
   4264 static void
   4265 radeonfb_brightness_down(device_t dev)
   4266 {
   4267 	struct radeonfb_softc *sc = device_private(dev);
   4268 	struct radeonfb_display *dp = &sc->sc_displays[0];
   4269 	int level;
   4270 
   4271 	/* we assume the main display is the first one - need a better way */
   4272 	if (sc->sc_ndisplays < 1) return;
   4273 	/* make sure pushing the hotkeys always has an effect */
   4274 	dp->rd_bl_on = 1;
   4275 	level = dp->rd_bl_level;
   4276 	level = max(0, level - 5);
   4277 	radeonfb_set_backlight(dp, level);
   4278 }
   4279