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radeonfb.c revision 1.52
      1 /*	$NetBSD: radeonfb.c,v 1.52 2012/01/11 16:02:30 macallan 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 1.52 2012/01/11 16:02:30 macallan 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 
     93 #include <dev/pci/pcidevs.h>
     94 #include <dev/pci/pcireg.h>
     95 #include <dev/pci/pcivar.h>
     96 #include <dev/pci/pciio.h>
     97 #include <dev/pci/radeonfbreg.h>
     98 #include <dev/pci/radeonfbvar.h>
     99 #include "opt_radeonfb.h"
    100 #include "opt_vcons.h"
    101 
    102 #ifdef RADEONFB_DEPTH_32
    103 #define RADEONFB_DEFAULT_DEPTH 32
    104 #else
    105 #define RADEONFB_DEFAULT_DEPTH 8
    106 #endif
    107 
    108 static int radeonfb_match(device_t, cfdata_t, void *);
    109 static void radeonfb_attach(device_t, device_t, void *);
    110 static int radeonfb_ioctl(void *, void *, unsigned long, void *, int,
    111     struct lwp *);
    112 static paddr_t radeonfb_mmap(void *, void *, off_t, int);
    113 static int radeonfb_scratch_test(struct radeonfb_softc *, int, uint32_t);
    114 static void radeonfb_loadbios(struct radeonfb_softc *,
    115     const struct pci_attach_args *);
    116 
    117 static uintmax_t radeonfb_getprop_num(struct radeonfb_softc *, const char *,
    118     uintmax_t);
    119 static int radeonfb_getclocks(struct radeonfb_softc *);
    120 static int radeonfb_gettmds(struct radeonfb_softc *);
    121 static int radeonfb_calc_dividers(struct radeonfb_softc *, uint32_t,
    122     uint32_t *, uint32_t *);
    123 static int radeonfb_getconnectors(struct radeonfb_softc *);
    124 static const struct videomode *radeonfb_modelookup(const char *);
    125 static void radeonfb_init_screen(void *, struct vcons_screen *, int, long *);
    126 static void radeonfb_pllwriteupdate(struct radeonfb_softc *, int);
    127 static void radeonfb_pllwaitatomicread(struct radeonfb_softc *, int);
    128 static void radeonfb_program_vclk(struct radeonfb_softc *, int, int);
    129 static void radeonfb_modeswitch(struct radeonfb_display *);
    130 static void radeonfb_setcrtc(struct radeonfb_display *, int);
    131 static void radeonfb_init_misc(struct radeonfb_softc *);
    132 static void radeonfb_set_fbloc(struct radeonfb_softc *);
    133 static void radeonfb_init_palette(struct radeonfb_softc *, int);
    134 static void radeonfb_r300cg_workaround(struct radeonfb_softc *);
    135 
    136 static int radeonfb_isblank(struct radeonfb_display *);
    137 static void radeonfb_blank(struct radeonfb_display *, int);
    138 static int radeonfb_set_cursor(struct radeonfb_display *,
    139     struct wsdisplay_cursor *);
    140 static int radeonfb_set_curpos(struct radeonfb_display *,
    141     struct wsdisplay_curpos *);
    142 
    143 /* acceleration support */
    144 static void  radeonfb_rectfill(struct radeonfb_display *, int dstx, int dsty,
    145     int width, int height, uint32_t color);
    146 static void radeonfb_bitblt(struct radeonfb_display *, int srcx, int srcy,
    147     int dstx, int dsty, int width, int height, int rop, uint32_t mask);
    148 
    149 /* hw cursor support */
    150 static void radeonfb_cursor_cmap(struct radeonfb_display *);
    151 static void radeonfb_cursor_shape(struct radeonfb_display *);
    152 static void radeonfb_cursor_position(struct radeonfb_display *);
    153 static void radeonfb_cursor_visible(struct radeonfb_display *);
    154 static void radeonfb_cursor_update(struct radeonfb_display *, unsigned);
    155 
    156 static void radeonfb_wait_fifo(struct radeonfb_softc *, int);
    157 static void radeonfb_engine_idle(struct radeonfb_softc *);
    158 static void radeonfb_engine_flush(struct radeonfb_softc *);
    159 static void radeonfb_engine_reset(struct radeonfb_softc *);
    160 static void radeonfb_engine_init(struct radeonfb_display *);
    161 static inline void radeonfb_unclip(struct radeonfb_softc *);
    162 
    163 static void radeonfb_eraserows(void *, int, int, long);
    164 static void radeonfb_erasecols(void *, int, int, int, long);
    165 static void radeonfb_copyrows(void *, int, int, int);
    166 static void radeonfb_copycols(void *, int, int, int, int);
    167 static void radeonfb_cursor(void *, int, int, int);
    168 static void radeonfb_putchar(void *, int, int, unsigned, long);
    169 static void radeonfb_putchar_aa32(void *, int, int, unsigned, long);
    170 static void radeonfb_putchar_wrapper(void *, int, int, unsigned, long);
    171 
    172 static int radeonfb_get_backlight(struct radeonfb_display *);
    173 static int radeonfb_set_backlight(struct radeonfb_display *, int);
    174 static void radeonfb_lvds_callout(void *);
    175 
    176 static void radeonfb_brightness_up(device_t);
    177 static void radeonfb_brightness_down(device_t);
    178 
    179 static struct videomode *radeonfb_best_refresh(struct videomode *,
    180     struct videomode *);
    181 static void radeonfb_pickres(struct radeonfb_display *, uint16_t *,
    182     uint16_t *, int);
    183 static const struct videomode *radeonfb_port_mode(struct radeonfb_softc *,
    184     struct radeonfb_port *, int, int);
    185 
    186 static int radeonfb_drm_print(void *, const char *);
    187 
    188 #ifdef	RADEONFB_DEBUG
    189 int	radeon_debug = 1;
    190 #define	DPRINTF(x)	\
    191 	if (radeon_debug) printf x
    192 #define	PRINTREG(r)	DPRINTF((#r " = %08x\n", GET32(sc, r)))
    193 #define	PRINTPLL(r)	DPRINTF((#r " = %08x\n", GETPLL(sc, r)))
    194 #else
    195 #define	DPRINTF(x)
    196 #define	PRINTREG(r)
    197 #define	PRINTPLL(r)
    198 #endif
    199 
    200 #define	ROUNDUP(x,y)	(((x) + ((y) - 1)) & ~((y) - 1))
    201 
    202 #ifndef	RADEON_DEFAULT_MODE
    203 /* any reasonably modern display should handle this */
    204 #define	RADEON_DEFAULT_MODE	"1024x768x60"
    205 #endif
    206 
    207 extern const u_char rasops_cmap[768];
    208 
    209 const char	*radeonfb_default_mode = RADEON_DEFAULT_MODE;
    210 
    211 static struct {
    212 	int		size;		/* minimum memory size (MB) */
    213 	int		maxx;		/* maximum x dimension */
    214 	int		maxy;		/* maximum y dimension */
    215 	int		maxbpp;		/* maximum bpp */
    216 	int		maxdisp;	/* maximum logical display count */
    217 } radeonfb_limits[] = {
    218 	{ 32,	2048, 1536, 32, 2 },
    219 	{ 16,	1600, 1200, 32, 2 },
    220 	{ 8,	1600, 1200, 32, 1 },
    221 	{ 0,	0, 0, 0, 0 },
    222 };
    223 
    224 static struct wsscreen_descr radeonfb_stdscreen = {
    225 	"fb",		/* name */
    226 	0, 0,		/* ncols, nrows */
    227 	NULL,		/* textops */
    228 	8, 16,		/* fontwidth, fontheight */
    229 	WSSCREEN_WSCOLORS, /* capabilities */
    230 	0,		/* modecookie */
    231 };
    232 
    233 struct wsdisplay_accessops radeonfb_accessops = {
    234 	radeonfb_ioctl,
    235 	radeonfb_mmap,
    236 	NULL,		/* vcons_alloc_screen */
    237 	NULL,		/* vcons_free_screen */
    238 	NULL,		/* vcons_show_screen */
    239 	NULL,		/* load_font */
    240 	NULL,		/* pollc */
    241 	NULL,		/* scroll */
    242 };
    243 
    244 static struct {
    245 	uint16_t	devid;
    246 	uint16_t	family;
    247 	uint16_t	flags;
    248 } radeonfb_devices[] =
    249 {
    250 	/* R100 family */
    251 	{ PCI_PRODUCT_ATI_RADEON_R100_QD,	RADEON_R100, 0 },
    252 	{ PCI_PRODUCT_ATI_RADEON_R100_QE,	RADEON_R100, 0 },
    253 	{ PCI_PRODUCT_ATI_RADEON_R100_QF,	RADEON_R100, 0 },
    254 	{ PCI_PRODUCT_ATI_RADEON_R100_QG,	RADEON_R100, 0 },
    255 
    256 	/* RV100 family */
    257 	{ PCI_PRODUCT_ATI_RADEON_RV100_LY,	RADEON_RV100, RFB_MOB },
    258 	{ PCI_PRODUCT_ATI_RADEON_RV100_LZ,	RADEON_RV100, RFB_MOB },
    259 	{ PCI_PRODUCT_ATI_RADEON_RV100_QY,	RADEON_RV100, 0 },
    260 	{ PCI_PRODUCT_ATI_RADEON_RV100_QZ,	RADEON_RV100, 0 },
    261 
    262 	/* RS100 family */
    263 	{ PCI_PRODUCT_ATI_RADEON_RS100_4136,	RADEON_RS100, 0 },
    264 	{ PCI_PRODUCT_ATI_RADEON_RS100_4336,	RADEON_RS100, RFB_MOB },
    265 
    266 	/* RS200/RS250 family */
    267 	{ PCI_PRODUCT_ATI_RADEON_RS200_4337,	RADEON_RS200, RFB_MOB },
    268 	{ PCI_PRODUCT_ATI_RADEON_RS200_A7,	RADEON_RS200, 0 },
    269 	{ PCI_PRODUCT_ATI_RADEON_RS250_B7,	RADEON_RS200, RFB_MOB },
    270 	{ PCI_PRODUCT_ATI_RADEON_RS250_D7,	RADEON_RS200, 0 },
    271 
    272 	/* R200 family */
    273 	/* add more R200 products? , 5148 */
    274 	{ PCI_PRODUCT_ATI_RADEON_R200_BB,	RADEON_R200, 0 },
    275 	{ PCI_PRODUCT_ATI_RADEON_R200_BC,	RADEON_R200, 0 },
    276 	{ PCI_PRODUCT_ATI_RADEON_R200_QH,	RADEON_R200, 0 },
    277 	{ PCI_PRODUCT_ATI_RADEON_R200_QL,	RADEON_R200, 0 },
    278 	{ PCI_PRODUCT_ATI_RADEON_R200_QM,	RADEON_R200, 0 },
    279 
    280 	/* RV200 family */
    281 	{ PCI_PRODUCT_ATI_RADEON_RV200_LW,	RADEON_RV200, RFB_MOB },
    282 	{ PCI_PRODUCT_ATI_RADEON_RV200_LX,	RADEON_RV200, RFB_MOB },
    283 	{ PCI_PRODUCT_ATI_RADEON_RV200_QW,	RADEON_RV200, 0 },
    284 	{ PCI_PRODUCT_ATI_RADEON_RV200_QX,	RADEON_RV200, 0 },
    285 
    286 	/* RV250 family */
    287 	{ PCI_PRODUCT_ATI_RADEON_RV250_4966,	RADEON_RV250, 0 },
    288 	{ PCI_PRODUCT_ATI_RADEON_RV250_4967,	RADEON_RV250, 0 },
    289 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C64,	RADEON_RV250, RFB_MOB },
    290 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C66,	RADEON_RV250, RFB_MOB },
    291 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C67,	RADEON_RV250, RFB_MOB },
    292 
    293 	/* RS300 family */
    294 	{ PCI_PRODUCT_ATI_RADEON_RS300_X5,	RADEON_RS300, 0 },
    295 	{ PCI_PRODUCT_ATI_RADEON_RS300_X4,	RADEON_RS300, 0 },
    296 	{ PCI_PRODUCT_ATI_RADEON_RS300_7834,	RADEON_RS300, 0 },
    297 	{ PCI_PRODUCT_ATI_RADEON_RS300_7835,	RADEON_RS300, RFB_MOB },
    298 
    299 	/* RV280 family */
    300 	{ PCI_PRODUCT_ATI_RADEON_RV280_5960,	RADEON_RV280, 0 },
    301 	{ PCI_PRODUCT_ATI_RADEON_RV280_5961,	RADEON_RV280, 0 },
    302 	{ PCI_PRODUCT_ATI_RADEON_RV280_5962,	RADEON_RV280, 0 },
    303 	{ PCI_PRODUCT_ATI_RADEON_RV280_5963,	RADEON_RV280, 0 },
    304 	{ PCI_PRODUCT_ATI_RADEON_RV280_5964,	RADEON_RV280, 0 },
    305 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C61,	RADEON_RV280, RFB_MOB },
    306 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C63,	RADEON_RV280, RFB_MOB },
    307 
    308 	/* R300 family */
    309 	{ PCI_PRODUCT_ATI_RADEON_R300_AD,	RADEON_R300, 0 },
    310 	{ PCI_PRODUCT_ATI_RADEON_R300_AE,	RADEON_R300, 0 },
    311 	{ PCI_PRODUCT_ATI_RADEON_R300_AF,	RADEON_R300, 0 },
    312 	{ PCI_PRODUCT_ATI_RADEON_R300_AG,	RADEON_R300, 0 },
    313 	{ PCI_PRODUCT_ATI_RADEON_R300_ND,	RADEON_R300, 0 },
    314 	{ PCI_PRODUCT_ATI_RADEON_R300_NE,	RADEON_R300, 0 },
    315 	{ PCI_PRODUCT_ATI_RADEON_R300_NF,	RADEON_R300, 0 },
    316 	{ PCI_PRODUCT_ATI_RADEON_R300_NG,	RADEON_R300, 0 },
    317 
    318 	/* RV350/RV360 family */
    319 	{ PCI_PRODUCT_ATI_RADEON_RV350_AP,	RADEON_RV350, 0 },
    320 	{ PCI_PRODUCT_ATI_RADEON_RV350_AQ,	RADEON_RV350, 0 },
    321 	{ PCI_PRODUCT_ATI_RADEON_RV360_AR,	RADEON_RV350, 0 },
    322 	{ PCI_PRODUCT_ATI_RADEON_RV350_AS,	RADEON_RV350, 0 },
    323 	{ PCI_PRODUCT_ATI_RADEON_RV350_AT,	RADEON_RV350, 0 },
    324 	{ PCI_PRODUCT_ATI_RADEON_RV350_AV,	RADEON_RV350, 0 },
    325 	{ PCI_PRODUCT_ATI_RADEON_RV350_NP,	RADEON_RV350, RFB_MOB },
    326 	{ PCI_PRODUCT_ATI_RADEON_RV350_NQ,	RADEON_RV350, RFB_MOB },
    327 	{ PCI_PRODUCT_ATI_RADEON_RV350_NR,	RADEON_RV350, RFB_MOB },
    328 	{ PCI_PRODUCT_ATI_RADEON_RV350_NS,	RADEON_RV350, RFB_MOB },
    329 	{ PCI_PRODUCT_ATI_RADEON_RV350_NT,	RADEON_RV350, RFB_MOB },
    330 	{ PCI_PRODUCT_ATI_RADEON_RV350_NV,	RADEON_RV350, RFB_MOB },
    331 
    332 	/* R350/R360 family */
    333 	{ PCI_PRODUCT_ATI_RADEON_R350_AH,	RADEON_R350, 0 },
    334 	{ PCI_PRODUCT_ATI_RADEON_R350_AI,	RADEON_R350, 0 },
    335 	{ PCI_PRODUCT_ATI_RADEON_R350_AJ,	RADEON_R350, 0 },
    336 	{ PCI_PRODUCT_ATI_RADEON_R350_AK,	RADEON_R350, 0 },
    337 	{ PCI_PRODUCT_ATI_RADEON_R350_NH,	RADEON_R350, 0 },
    338 	{ PCI_PRODUCT_ATI_RADEON_R350_NI,	RADEON_R350, 0 },
    339 	{ PCI_PRODUCT_ATI_RADEON_R350_NK,	RADEON_R350, 0 },
    340 	{ PCI_PRODUCT_ATI_RADEON_R360_NJ,	RADEON_R350, 0 },
    341 
    342 	/* RV380/RV370 family */
    343 	{ PCI_PRODUCT_ATI_RADEON_RV380_3150,	RADEON_RV380, RFB_MOB },
    344 	{ PCI_PRODUCT_ATI_RADEON_RV380_3154,	RADEON_RV380, RFB_MOB },
    345 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E50,	RADEON_RV380, 0 },
    346 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E54,	RADEON_RV380, 0 },
    347 	{ PCI_PRODUCT_ATI_RADEON_RV370_5460,	RADEON_RV380, RFB_MOB },
    348 	{ PCI_PRODUCT_ATI_RADEON_RV370_5464,	RADEON_RV380, RFB_MOB },
    349 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B60,	RADEON_RV380, 0 },
    350 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B64,	RADEON_RV380, 0 },
    351 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B65,	RADEON_RV380, 0 },
    352 
    353 	/* R420/R423 family */
    354 	{ PCI_PRODUCT_ATI_RADEON_R420_JH,	RADEON_R420, 0 },
    355 	{ PCI_PRODUCT_ATI_RADEON_R420_JI,	RADEON_R420, 0 },
    356 	{ PCI_PRODUCT_ATI_RADEON_R420_JJ,	RADEON_R420, 0 },
    357 	{ PCI_PRODUCT_ATI_RADEON_R420_JK,	RADEON_R420, 0 },
    358 	{ PCI_PRODUCT_ATI_RADEON_R420_JL,	RADEON_R420, 0 },
    359 	{ PCI_PRODUCT_ATI_RADEON_R420_JM,	RADEON_R420, 0 },
    360 	{ PCI_PRODUCT_ATI_RADEON_R420_JN,	RADEON_R420, RFB_MOB },
    361 	{ PCI_PRODUCT_ATI_RADEON_R420_JP,	RADEON_R420, 0 },
    362 	{ PCI_PRODUCT_ATI_RADEON_R423_UH,	RADEON_R420, 0 },
    363 	{ PCI_PRODUCT_ATI_RADEON_R423_UI,	RADEON_R420, 0 },
    364 	{ PCI_PRODUCT_ATI_RADEON_R423_UJ,	RADEON_R420, 0 },
    365 	{ PCI_PRODUCT_ATI_RADEON_R423_UK,	RADEON_R420, 0 },
    366 	{ PCI_PRODUCT_ATI_RADEON_R423_UQ,	RADEON_R420, 0 },
    367 	{ PCI_PRODUCT_ATI_RADEON_R423_UR,	RADEON_R420, 0 },
    368 	{ PCI_PRODUCT_ATI_RADEON_R423_UT,	RADEON_R420, 0 },
    369 	{ PCI_PRODUCT_ATI_RADEON_R423_5D57,	RADEON_R420, 0 },
    370 	{ PCI_PRODUCT_ATI_RADEON_R430_554F,	RADEON_R420, 0 },
    371 
    372 	{ 0, 0, 0 }
    373 };
    374 
    375 static struct {
    376 	int divider;
    377 	int mask;
    378 } radeonfb_dividers[] = {
    379 	{  1, 0 },
    380 	{  2, 1 },
    381 	{  3, 4 },
    382 	{  4, 2 },
    383 	{  6, 6 },
    384 	{  8, 3 },
    385 	{ 12, 7 },
    386 	{  0, 0 }
    387 };
    388 
    389 /*
    390  * This table taken from X11.
    391  */
    392 static const struct {
    393 	int			family;
    394 	struct radeon_tmds_pll	plls[4];
    395 } radeonfb_tmds_pll[] = {
    396 	{ RADEON_R100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    397 	{ RADEON_RV100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    398 	{ RADEON_RS100, {{0, 0}}},
    399 	{ RADEON_RV200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    400 	{ RADEON_RS200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    401 	{ RADEON_R200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    402 	{ RADEON_RV250,	{{15500, 0x81b}, {-1, 0x83f}}},
    403 	{ RADEON_RS300, {{0, 0}}},
    404 	{ RADEON_RV280,	{{13000, 0x400f4}, {15000, 0x400f7}}},
    405 	{ RADEON_R300,	{{-1, 0xb01cb}}},
    406 	{ RADEON_R350,	{{-1, 0xb01cb}}},
    407 	{ RADEON_RV350,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    408 	{ RADEON_RV380,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    409 	{ RADEON_R420,	{{-1, 0xb01cb}}},
    410 };
    411 
    412 #define RADEONFB_BACKLIGHT_MAX    255  /* Maximum backlight level. */
    413 
    414 
    415 CFATTACH_DECL_NEW(radeonfb, sizeof (struct radeonfb_softc),
    416     radeonfb_match, radeonfb_attach, NULL, NULL);
    417 
    418 static int
    419 radeonfb_match(device_t parent, cfdata_t match, void *aux)
    420 {
    421 	const struct pci_attach_args	*pa = aux;
    422 	int			i;
    423 
    424 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_ATI)
    425 		return 0;
    426 
    427 	for (i = 0; radeonfb_devices[i].devid; i++) {
    428 		if (PCI_PRODUCT(pa->pa_id) == radeonfb_devices[i].devid)
    429 			return 100;	/* high to defeat VGA/VESA */
    430 	}
    431 
    432 	return 0;
    433 }
    434 
    435 static void
    436 radeonfb_attach(device_t parent, device_t dev, void *aux)
    437 {
    438 	struct radeonfb_softc	*sc = device_private(dev);
    439 	const struct pci_attach_args	*pa = aux;
    440 	const char		*mptr;
    441 	bus_size_t		bsz;
    442 	pcireg_t		screg;
    443 	int			i, j, fg, bg, ul, flags;
    444 	uint32_t		v;
    445 
    446 	sc->sc_dev = dev;
    447 	sc->sc_id = pa->pa_id;
    448 	for (i = 0; radeonfb_devices[i].devid; i++) {
    449 		if (PCI_PRODUCT(sc->sc_id) == radeonfb_devices[i].devid)
    450 			break;
    451 	}
    452 
    453 	pci_devinfo(sc->sc_id, pa->pa_class, 0, sc->sc_devinfo,
    454 	    sizeof(sc->sc_devinfo));
    455 
    456 	aprint_naive("\n");
    457 	aprint_normal(": %s\n", sc->sc_devinfo);
    458 
    459 	DPRINTF((prop_dictionary_externalize(device_properties(dev))));
    460 
    461 	KASSERT(radeonfb_devices[i].devid != 0);
    462 	sc->sc_pt = pa->pa_tag;
    463 	sc->sc_iot = pa->pa_iot;
    464 	sc->sc_pc = pa->pa_pc;
    465 	sc->sc_family = radeonfb_devices[i].family;
    466 	sc->sc_flags = radeonfb_devices[i].flags;
    467 
    468 	/* enable memory and IO access */
    469 	screg = pci_conf_read(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG);
    470 	screg |= PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE;
    471 	pci_conf_write(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG, screg);
    472 
    473 	/*
    474 	 * Some flags are general to entire chip families, and rather
    475 	 * than clutter up the table with them, we go ahead and set
    476 	 * them here.
    477 	 */
    478 	switch (sc->sc_family) {
    479 	case RADEON_RS100:
    480 	case RADEON_RS200:
    481 		sc->sc_flags |= RFB_IGP | RFB_RV100;
    482 		break;
    483 
    484 	case RADEON_RV100:
    485 	case RADEON_RV200:
    486 	case RADEON_RV250:
    487 	case RADEON_RV280:
    488 		sc->sc_flags |= RFB_RV100;
    489 		break;
    490 
    491 	case RADEON_RS300:
    492 		sc->sc_flags |= RFB_SDAC | RFB_IGP | RFB_RV100;
    493 		break;
    494 
    495 	case RADEON_R300:
    496 	case RADEON_RV350:
    497 	case RADEON_R350:
    498 	case RADEON_RV380:
    499 	case RADEON_R420:
    500 		/* newer chips */
    501 		sc->sc_flags |= RFB_R300;
    502 		break;
    503 
    504 	case RADEON_R100:
    505 		sc->sc_flags |= RFB_NCRTC2;
    506 		break;
    507 	}
    508 
    509 	if ((sc->sc_family == RADEON_RV200) ||
    510 	    (sc->sc_family == RADEON_RV250) ||
    511 	    (sc->sc_family == RADEON_RV280) ||
    512 	    (sc->sc_family == RADEON_RV350)) {
    513 		bool inverted = 0;
    514 		/* backlight level is linear */
    515 		DPRINTF(("found RV* chip, backlight is supposedly linear\n"));
    516 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
    517 		    "backlight_level_reverted", &inverted);
    518 		if (inverted) {
    519 			DPRINTF(("nope, it's inverted\n"));
    520 			sc->sc_flags |= RFB_INV_BLIGHT;
    521 		}
    522 	} else
    523 		sc->sc_flags |= RFB_INV_BLIGHT;
    524 
    525 	/*
    526 	 * XXX: to support true multihead, this must change.
    527 	 */
    528 	sc->sc_ndisplays = 1;
    529 
    530 	/* XXX: */
    531 	if (!HAS_CRTC2(sc)) {
    532 		sc->sc_ndisplays = 1;
    533 	}
    534 
    535 	if (pci_mapreg_map(pa, RADEON_MAPREG_MMIO, PCI_MAPREG_TYPE_MEM,	0,
    536 		&sc->sc_regt, &sc->sc_regh, &sc->sc_regaddr,
    537 		&sc->sc_regsz) != 0) {
    538 		aprint_error("%s: unable to map registers!\n", XNAME(sc));
    539 		goto error;
    540 	}
    541 
    542 	if (pci_mapreg_info(sc->sc_pc, sc->sc_pt, PCI_MAPREG_ROM,
    543 	     PCI_MAPREG_TYPE_ROM, &sc->sc_romaddr, &sc->sc_romsz, &flags) != 0)
    544 	{
    545 		aprint_error("%s: unable to find ROM!\n", XNAME(sc));
    546 		goto error;
    547 	}
    548 	sc->sc_romt = sc->sc_memt;
    549 
    550 	/* scratch register test... */
    551 	if (radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0x55555555) ||
    552 	    radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0xaaaaaaaa)) {
    553 		aprint_error("%s: scratch register test failed!\n", XNAME(sc));
    554 		goto error;
    555 	}
    556 
    557 	PRINTREG(RADEON_BIOS_4_SCRATCH);
    558 	PRINTREG(RADEON_FP_GEN_CNTL);
    559 	sc->sc_fp_gen_cntl = GET32(sc, RADEON_FP_GEN_CNTL);
    560 	PRINTREG(RADEON_FP2_GEN_CNTL);
    561 	PRINTREG(RADEON_TMDS_CNTL);
    562 	PRINTREG(RADEON_TMDS_TRANSMITTER_CNTL);
    563 	PRINTREG(RADEON_TMDS_PLL_CNTL);
    564 	PRINTREG(RADEON_LVDS_GEN_CNTL);
    565 	PRINTREG(RADEON_FP_HORZ_STRETCH);
    566 	PRINTREG(RADEON_FP_VERT_STRETCH);
    567 
    568 	/* XXX: RV100 specific */
    569 	PUT32(sc, RADEON_TMDS_PLL_CNTL, 0xa27);
    570 
    571 	PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    572 	    RADEON_TMDS_TRANSMITTER_PLLEN,
    573 	    RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST);
    574 
    575 	radeonfb_i2c_init(sc);
    576 
    577 	radeonfb_loadbios(sc, pa);
    578 
    579 #ifdef	RADEONFB_BIOS_INIT
    580 	if (radeonfb_bios_init(sc)) {
    581 		aprint_error("%s: BIOS inititialization failed\n", XNAME(sc));
    582 	}
    583 #endif
    584 
    585 	if (radeonfb_getclocks(sc)) {
    586 		aprint_error("%s: Unable to get reference clocks from BIOS\n",
    587 		    XNAME(sc));
    588 		goto error;
    589 	}
    590 
    591 	if (radeonfb_gettmds(sc)) {
    592 		aprint_error("%s: Unable to identify TMDS PLL settings\n",
    593 		    XNAME(sc));
    594 		goto error;
    595 	}
    596 
    597 	aprint_verbose("%s: refclk = %d.%03d MHz, refdiv = %d "
    598 	    "minpll = %d, maxpll = %d\n", XNAME(sc),
    599 	    (int)sc->sc_refclk / 1000, (int)sc->sc_refclk % 1000,
    600 	    (int)sc->sc_refdiv, (int)sc->sc_minpll, (int)sc->sc_maxpll);
    601 
    602 	radeonfb_getconnectors(sc);
    603 
    604 	radeonfb_set_fbloc(sc);
    605 
    606 	for (i = 0; radeonfb_limits[i].size; i++) {
    607 		if (sc->sc_memsz >= radeonfb_limits[i].size) {
    608 			sc->sc_maxx = radeonfb_limits[i].maxx;
    609 			sc->sc_maxy = radeonfb_limits[i].maxy;
    610 			sc->sc_maxbpp = radeonfb_limits[i].maxbpp;
    611 			/* framebuffer offset, start at a 4K page */
    612 			sc->sc_fboffset = sc->sc_memsz /
    613 			    radeonfb_limits[i].maxdisp;
    614 			/*
    615 			 * we use the fbsize to figure out where we can store
    616 			 * things like cursor data.
    617 			 */
    618 			sc->sc_fbsize =
    619 			    ROUNDUP(ROUNDUP(sc->sc_maxx * sc->sc_maxbpp / 8 ,
    620 					RADEON_STRIDEALIGN) * sc->sc_maxy,
    621 				4096);
    622 			break;
    623 		}
    624 	}
    625 
    626 
    627 	radeonfb_init_misc(sc);
    628 	radeonfb_init_palette(sc, 0);
    629 	if (HAS_CRTC2(sc))
    630 		radeonfb_init_palette(sc, 1);
    631 
    632 	/* program the DAC wirings */
    633 	for (i = 0; i < (HAS_CRTC2(sc) ? 2 : 1); i++) {
    634 		switch (sc->sc_ports[i].rp_dac_type) {
    635 		case RADEON_DAC_PRIMARY:
    636 			PATCH32(sc, RADEON_DAC_CNTL2,
    637 			    i ? RADEON_DAC2_DAC_CLK_SEL : 0,
    638 			    ~RADEON_DAC2_DAC_CLK_SEL);
    639 			break;
    640 		case RADEON_DAC_TVDAC:
    641 			/* we always use the TVDAC to drive a secondary analog
    642 			 * CRT for now.  if we ever support TV-out this will
    643 			 * have to change.
    644 			 */
    645 			SET32(sc, RADEON_DAC_CNTL2,
    646 			    RADEON_DAC2_DAC2_CLK_SEL);
    647 			PATCH32(sc, RADEON_DISP_HW_DEBUG,
    648 			    i ? 0 : RADEON_CRT2_DISP1_SEL,
    649 			    ~RADEON_CRT2_DISP1_SEL);
    650 			break;
    651 		}
    652 	}
    653 	PRINTREG(RADEON_DAC_CNTL2);
    654 	PRINTREG(RADEON_DISP_HW_DEBUG);
    655 
    656 	/* other DAC programming */
    657 	v = GET32(sc, RADEON_DAC_CNTL);
    658 	v &= (RADEON_DAC_RANGE_CNTL_MASK | RADEON_DAC_BLANKING);
    659 	v |= RADEON_DAC_MASK_ALL | RADEON_DAC_8BIT_EN;
    660 	PUT32(sc, RADEON_DAC_CNTL, v);
    661 	PRINTREG(RADEON_DAC_CNTL);
    662 
    663 	/* XXX: this may need more investigation */
    664 	PUT32(sc, RADEON_TV_DAC_CNTL, 0x00280203);
    665 	PRINTREG(RADEON_TV_DAC_CNTL);
    666 
    667 	/* enable TMDS */
    668 	SET32(sc, RADEON_FP_GEN_CNTL,
    669 	    RADEON_FP_TMDS_EN |
    670 		RADEON_FP_CRTC_DONT_SHADOW_VPAR |
    671 		RADEON_FP_CRTC_DONT_SHADOW_HEND);
    672 	/*
    673 	 * XXX
    674 	 * no idea why this is necessary - if I do not clear this bit on my
    675 	 * iBook G4 the screen remains black, even though it's already clear.
    676 	 * It needs to be set on my Sun XVR-100 for the DVI port to work
    677 	 */
    678 
    679 	if (sc->sc_fp_gen_cntl & RADEON_FP_SEL_CRTC2) {
    680 		SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    681 	} else
    682 		CLR32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    683 
    684 	if (HAS_CRTC2(sc))
    685 		SET32(sc, RADEON_FP2_GEN_CNTL, RADEON_FP2_SRC_SEL_CRTC2);
    686 
    687 	/*
    688 	 * we use bus_space_map instead of pci_mapreg, because we don't
    689 	 * need the full aperature space.  no point in wasting virtual
    690 	 * address space we don't intend to use, right?
    691 	 */
    692 	if ((sc->sc_memsz < (4096 * 1024)) ||
    693 	    (pci_mapreg_info(sc->sc_pc, sc->sc_pt, RADEON_MAPREG_VRAM,
    694 		PCI_MAPREG_TYPE_MEM, &sc->sc_memaddr, &bsz, NULL) != 0) ||
    695 	    (bsz < sc->sc_memsz)) {
    696 		sc->sc_memsz = 0;
    697 		aprint_error("%s: Bad frame buffer configuration\n",
    698 		    XNAME(sc));
    699 		goto error;
    700 	}
    701 
    702 	/* 64 MB should be enough -- more just wastes map entries */
    703 	if (sc->sc_memsz > (64 << 20))
    704 		sc->sc_memsz = (64 << 20);
    705 
    706 	sc->sc_memt = pa->pa_memt;
    707 	if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
    708 		BUS_SPACE_MAP_LINEAR, &sc->sc_memh) != 0) {
    709 		sc->sc_memsz = 0;
    710 		aprint_error("%s: Unable to map frame buffer\n", XNAME(sc));
    711 		goto error;
    712 	}
    713 
    714 	aprint_normal("%s: %d MB aperture at 0x%08x, "
    715 	    "%d KB registers at 0x%08x\n", XNAME(sc),
    716 	    (int)sc->sc_memsz >> 20, (unsigned)sc->sc_memaddr,
    717 	    (int)sc->sc_regsz >> 10, (unsigned)sc->sc_regaddr);
    718 
    719 	/* setup default video mode from devprop (allows PROM override) */
    720 	sc->sc_defaultmode = radeonfb_default_mode;
    721 	if (prop_dictionary_get_cstring_nocopy(device_properties(sc->sc_dev),
    722 	    "videomode", &mptr)) {
    723 
    724 		strncpy(sc->sc_modebuf, mptr, sizeof(sc->sc_modebuf));
    725 		sc->sc_defaultmode = sc->sc_modebuf;
    726 	}
    727 
    728 	/* initialize some basic display parameters */
    729 	for (i = 0; i < sc->sc_ndisplays; i++) {
    730 		struct radeonfb_display *dp = &sc->sc_displays[i];
    731 		struct rasops_info *ri;
    732 		long defattr;
    733 		struct wsemuldisplaydev_attach_args aa;
    734 
    735 		/*
    736 		 * Figure out how many "displays" (desktops) we are going to
    737 		 * support.  If more than one, then each CRTC gets its own
    738 		 * programming.
    739 		 *
    740 		 * XXX: this code needs to change to support mergedfb.
    741 		 * XXX: would be nice to allow this to be overridden
    742 		 */
    743 		if (HAS_CRTC2(sc) && (sc->sc_ndisplays == 1)) {
    744 			DPRINTF(("dual crtcs!\n"));
    745 			dp->rd_ncrtcs = 2;
    746 			dp->rd_crtcs[0].rc_number = 0;
    747 			dp->rd_crtcs[1].rc_number = 1;
    748 		} else {
    749 			dp->rd_ncrtcs = 1;
    750 			dp->rd_crtcs[0].rc_number = i;
    751 		}
    752 
    753 		/* set up port pointer */
    754 		for (j = 0; j < dp->rd_ncrtcs; j++) {
    755 			dp->rd_crtcs[j].rc_port =
    756 			    &sc->sc_ports[dp->rd_crtcs[j].rc_number];
    757 		}
    758 
    759 		dp->rd_softc = sc;
    760 		dp->rd_wsmode = WSDISPLAYIO_MODE_EMUL;
    761 		dp->rd_bg = WS_DEFAULT_BG;
    762 		dp->rd_bpp = RADEONFB_DEFAULT_DEPTH;	/* XXX */
    763 
    764 		/* for text mode, we pick a resolution that won't
    765 		 * require panning */
    766 		radeonfb_pickres(dp, &dp->rd_virtx, &dp->rd_virty, 0);
    767 
    768 		aprint_normal("%s: display %d: "
    769 		    "initial virtual resolution %dx%d at %d bpp\n",
    770 		    XNAME(sc), i, dp->rd_virtx, dp->rd_virty, dp->rd_bpp);
    771 
    772 		/* now select the *video mode* that we will use */
    773 		for (j = 0; j < dp->rd_ncrtcs; j++) {
    774 			const struct videomode *vmp;
    775 			vmp = radeonfb_port_mode(sc, dp->rd_crtcs[j].rc_port,
    776 			    dp->rd_virtx, dp->rd_virty);
    777 
    778 			/*
    779 			 * virtual resolution should be at least as high as
    780 			 * physical
    781 			 */
    782 			if (dp->rd_virtx < vmp->hdisplay ||
    783 			    dp->rd_virty < vmp->vdisplay) {
    784 				dp->rd_virtx = vmp->hdisplay;
    785 				dp->rd_virty = vmp->vdisplay;
    786 			}
    787 
    788 			dp->rd_crtcs[j].rc_videomode = *vmp;
    789 			printf("%s: port %d: physical %dx%d %dHz\n",
    790 			    XNAME(sc), j, vmp->hdisplay, vmp->vdisplay,
    791 			    DIVIDE(DIVIDE(vmp->dot_clock * 1000,
    792 				       vmp->htotal), vmp->vtotal));
    793 		}
    794 
    795 		/* N.B.: radeon wants 64-byte aligned stride */
    796 		dp->rd_stride = dp->rd_virtx * dp->rd_bpp / 8;
    797 		dp->rd_stride = ROUNDUP(dp->rd_stride, RADEON_STRIDEALIGN);
    798 
    799 		dp->rd_offset = sc->sc_fboffset * i;
    800 		dp->rd_fbptr = (vaddr_t)bus_space_vaddr(sc->sc_memt,
    801 		    sc->sc_memh) + dp->rd_offset;
    802 		dp->rd_curoff = sc->sc_fbsize;
    803 		dp->rd_curptr = dp->rd_fbptr + dp->rd_curoff;
    804 
    805 		DPRINTF(("fpbtr = %p\n", (void *)dp->rd_fbptr));
    806 
    807 		switch (dp->rd_bpp) {
    808 		case 8:
    809 			dp->rd_format = 2;
    810 			break;
    811 		case 32:
    812 			dp->rd_format = 6;
    813 			break;
    814 		default:
    815 			aprint_error("%s: bad depth %d\n", XNAME(sc),
    816 			    dp->rd_bpp);
    817 			goto error;
    818 		}
    819 
    820 		DPRINTF(("init engine\n"));
    821 		/* XXX: this seems suspicious - per display engine
    822 		   initialization? */
    823 		radeonfb_engine_init(dp);
    824 
    825 		/* copy the template into place */
    826 		dp->rd_wsscreens_storage[0] = radeonfb_stdscreen;
    827 		dp->rd_wsscreens = dp->rd_wsscreens_storage;
    828 
    829 		/* and make up the list */
    830 		dp->rd_wsscreenlist.nscreens = 1;
    831 		dp->rd_wsscreenlist.screens = (void *)&dp->rd_wsscreens;
    832 
    833 		vcons_init(&dp->rd_vd, dp, dp->rd_wsscreens,
    834 		    &radeonfb_accessops);
    835 
    836 		dp->rd_vd.init_screen = radeonfb_init_screen;
    837 
    838 		dp->rd_console = 0;
    839 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
    840 		    "is_console", &dp->rd_console);
    841 
    842 		dp->rd_vscreen.scr_flags |= VCONS_SCREEN_IS_STATIC;
    843 
    844 
    845 		vcons_init_screen(&dp->rd_vd, &dp->rd_vscreen,
    846 		    dp->rd_console, &defattr);
    847 
    848 		ri = &dp->rd_vscreen.scr_ri;
    849 
    850 		/* clear the screen */
    851 		rasops_unpack_attr(defattr, &fg, &bg, &ul);
    852 		radeonfb_rectfill(dp, 0, 0, ri->ri_width, ri->ri_height,
    853 		    ri->ri_devcmap[bg & 0xf]);
    854 
    855 		dp->rd_wsscreens->textops = &ri->ri_ops;
    856 		dp->rd_wsscreens->capabilities = ri->ri_caps;
    857 		dp->rd_wsscreens->nrows = ri->ri_rows;
    858 		dp->rd_wsscreens->ncols = ri->ri_cols;
    859 
    860 #ifdef SPLASHSCREEN
    861 		dp->rd_splash.si_depth = ri->ri_depth;
    862 		dp->rd_splash.si_bits = ri->ri_bits;
    863 		dp->rd_splash.si_hwbits = ri->ri_hwbits;
    864 		dp->rd_splash.si_width = ri->ri_width;
    865 		dp->rd_splash.si_height = ri->ri_height;
    866 		dp->rd_splash.si_stride = ri->ri_stride;
    867 		dp->rd_splash.si_fillrect = NULL;
    868 #endif
    869 		if (dp->rd_console) {
    870 
    871 			radeonfb_modeswitch(dp);
    872 			wsdisplay_cnattach(dp->rd_wsscreens, ri, 0, 0,
    873 			    defattr);
    874 #ifdef SPLASHSCREEN
    875 			if (splash_render(&dp->rd_splash,
    876 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
    877 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    878 			else
    879 #endif
    880 				vcons_replay_msgbuf(&dp->rd_vscreen);
    881 		} else {
    882 
    883 			/*
    884 			 * since we're not the console we can postpone
    885 			 * the rest until someone actually allocates a
    886 			 * screen for us.  but we do clear the screen
    887 			 * at least.
    888 			 */
    889 			memset(ri->ri_bits, 0, 1024);
    890 
    891 			radeonfb_modeswitch(dp);
    892 #ifdef SPLASHSCREEN
    893 			if (splash_render(&dp->rd_splash,
    894 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
    895 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    896 #endif
    897 		}
    898 
    899 		aa.console = dp->rd_console;
    900 		aa.scrdata = &dp->rd_wsscreenlist;
    901 		aa.accessops = &radeonfb_accessops;
    902 		aa.accesscookie = &dp->rd_vd;
    903 
    904 		config_found(sc->sc_dev, &aa, wsemuldisplaydevprint);
    905 
    906 		radeonfb_blank(dp, 0);
    907 
    908 		/* Initialise delayed lvds operations for backlight. */
    909 		callout_init(&dp->rd_bl_lvds_co, 0);
    910 		callout_setfunc(&dp->rd_bl_lvds_co,
    911 				radeonfb_lvds_callout, dp);
    912 	}
    913 
    914 	/*
    915 	 * if we have console output via firmware like on sparc64 it may
    916 	 * interfere with DAC programming so program the palette again
    917 	 * here after we took over
    918 	 */
    919 	radeonfb_init_palette(sc, 0);
    920 	if (HAS_CRTC2(sc))
    921 		radeonfb_init_palette(sc, 1);
    922 
    923 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_UP,
    924 	    radeonfb_brightness_up, TRUE);
    925 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_DOWN,
    926 	    radeonfb_brightness_down, TRUE);
    927 
    928 	config_found_ia(dev, "drm", aux, radeonfb_drm_print);
    929 
    930 	return;
    931 
    932 error:
    933 	if (sc->sc_biossz)
    934 		free(sc->sc_bios, M_DEVBUF);
    935 
    936 	if (sc->sc_regsz)
    937 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
    938 
    939 	if (sc->sc_memsz)
    940 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
    941 }
    942 
    943 static int
    944 radeonfb_drm_print(void *aux, const char *pnp)
    945 {
    946 	if (pnp)
    947 		aprint_normal("drm at %s", pnp);
    948 	return (UNCONF);
    949 }
    950 
    951 int
    952 radeonfb_ioctl(void *v, void *vs,
    953     unsigned long cmd, void *d, int flag, struct lwp *l)
    954 {
    955 	struct vcons_data	*vd;
    956 	struct radeonfb_display	*dp;
    957 	struct radeonfb_softc	*sc;
    958 	struct wsdisplay_param  *param;
    959 
    960 	vd = (struct vcons_data *)v;
    961 	dp = (struct radeonfb_display *)vd->cookie;
    962 	sc = dp->rd_softc;
    963 
    964 	switch (cmd) {
    965 	case WSDISPLAYIO_GTYPE:
    966 		*(unsigned *)d = WSDISPLAY_TYPE_PCIMISC;
    967 		return 0;
    968 
    969 	case WSDISPLAYIO_GINFO:
    970 		if (vd->active != NULL) {
    971 			struct wsdisplay_fbinfo *fb;
    972 			fb = (struct wsdisplay_fbinfo *)d;
    973 			fb->width = dp->rd_virtx;
    974 			fb->height = dp->rd_virty;
    975 			fb->depth = dp->rd_bpp;
    976 			fb->cmsize = 256;
    977 			return 0;
    978 		} else
    979 			return ENODEV;
    980 	case WSDISPLAYIO_GVIDEO:
    981 		if (radeonfb_isblank(dp))
    982 			*(unsigned *)d = WSDISPLAYIO_VIDEO_OFF;
    983 		else
    984 			*(unsigned *)d = WSDISPLAYIO_VIDEO_ON;
    985 		return 0;
    986 
    987 	case WSDISPLAYIO_SVIDEO:
    988 		radeonfb_blank(dp,
    989 		    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_OFF));
    990 		return 0;
    991 
    992 	case WSDISPLAYIO_GETCMAP:
    993 #if 0
    994 		if (dp->rd_bpp == 8)
    995 			return radeonfb_getcmap(sc,
    996 			    (struct wsdisplay_cmap *)d);
    997 #endif
    998 		return EINVAL;
    999 
   1000 	case WSDISPLAYIO_PUTCMAP:
   1001 #if 0
   1002 		if (dp->rd_bpp == 8)
   1003 			return radeonfb_putcmap(sc,
   1004 			    (struct wsdisplay_cmap *)d);
   1005 #endif
   1006 		return EINVAL;
   1007 
   1008 	case WSDISPLAYIO_LINEBYTES:
   1009 		*(unsigned *)d = dp->rd_stride;
   1010 		return 0;
   1011 
   1012 	case WSDISPLAYIO_SMODE:
   1013 		if (*(int *)d != dp->rd_wsmode) {
   1014 			dp->rd_wsmode = *(int *)d;
   1015 			if ((dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) &&
   1016 			    (dp->rd_vd.active)) {
   1017 				radeonfb_engine_init(dp);
   1018 				radeonfb_init_palette(sc, dp == &sc->sc_displays[0] ? 0 : 1);
   1019 				radeonfb_modeswitch(dp);
   1020 				vcons_redraw_screen(dp->rd_vd.active);
   1021 			}
   1022 		}
   1023 		return 0;
   1024 
   1025 	case WSDISPLAYIO_GCURMAX:
   1026 		((struct wsdisplay_curpos *)d)->x = RADEON_CURSORMAXX;
   1027 		((struct wsdisplay_curpos *)d)->y = RADEON_CURSORMAXY;
   1028 		return 0;
   1029 
   1030 	case WSDISPLAYIO_SCURSOR:
   1031 		return radeonfb_set_cursor(dp, (struct wsdisplay_cursor *)d);
   1032 
   1033 	case WSDISPLAYIO_GCURSOR:
   1034 		return EPASSTHROUGH;
   1035 
   1036 	case WSDISPLAYIO_GCURPOS:
   1037 		((struct wsdisplay_curpos *)d)->x = dp->rd_cursor.rc_pos.x;
   1038 		((struct wsdisplay_curpos *)d)->y = dp->rd_cursor.rc_pos.y;
   1039 		return 0;
   1040 
   1041 	case WSDISPLAYIO_SCURPOS:
   1042 		return radeonfb_set_curpos(dp, (struct wsdisplay_curpos *)d);
   1043 
   1044 	case WSDISPLAYIO_SSPLASH:
   1045 #if defined(SPLASHSCREEN)
   1046 		if (*(int *)d == 1) {
   1047 			SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
   1048 			splash_render(&dp->rd_splash,
   1049 			    SPLASH_F_CENTER|SPLASH_F_FILL);
   1050 		} else
   1051 			SCREEN_ENABLE_DRAWING(&dp->rd_vscreen);
   1052 		return 0;
   1053 #else
   1054 		return ENODEV;
   1055 #endif
   1056 	case WSDISPLAYIO_GETPARAM:
   1057 		param = (struct wsdisplay_param *)d;
   1058 		if (param->param == WSDISPLAYIO_PARAM_BACKLIGHT) {
   1059 			param->min = 0;
   1060 			param->max = RADEONFB_BACKLIGHT_MAX;
   1061 			param->curval = radeonfb_get_backlight(dp);
   1062 			return 0;
   1063 		}
   1064 		return EPASSTHROUGH;
   1065 
   1066 	case WSDISPLAYIO_SETPARAM:
   1067 		param = (struct wsdisplay_param *)d;
   1068 		if (param->param == WSDISPLAYIO_PARAM_BACKLIGHT) {
   1069 			return radeonfb_set_backlight(dp, param->curval);
   1070 		}
   1071 		return EPASSTHROUGH;
   1072 
   1073 	/* PCI config read/write passthrough. */
   1074 	case PCI_IOC_CFGREAD:
   1075 	case PCI_IOC_CFGWRITE:
   1076 		return pci_devioctl(sc->sc_pc, sc->sc_pt, cmd, d, flag, l);
   1077 
   1078 	case WSDISPLAYIO_GET_BUSID:
   1079 		return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc,
   1080 		    sc->sc_pt, d);
   1081 
   1082 	case WSDISPLAYIO_GET_EDID: {
   1083 		struct wsdisplayio_edid_info *ei = d;
   1084 		return wsdisplayio_get_edid(sc->sc_dev, ei);
   1085 	}
   1086 
   1087 	default:
   1088 		return EPASSTHROUGH;
   1089 	}
   1090 }
   1091 
   1092 paddr_t
   1093 radeonfb_mmap(void *v, void *vs, off_t offset, int prot)
   1094 {
   1095 	struct vcons_data	*vd;
   1096 	struct radeonfb_display	*dp;
   1097 	struct radeonfb_softc	*sc;
   1098 	paddr_t			pa;
   1099 
   1100 	vd = (struct vcons_data *)v;
   1101 	dp = (struct radeonfb_display *)vd->cookie;
   1102 	sc = dp->rd_softc;
   1103 
   1104 	/* XXX: note that we don't allow mapping of registers right now */
   1105 	/* XXX: this means that the XFree86 radeon driver won't work */
   1106 	if ((offset >= 0) && (offset < (dp->rd_virty * dp->rd_stride))) {
   1107 		pa = bus_space_mmap(sc->sc_memt,
   1108 		    sc->sc_memaddr + dp->rd_offset + offset, 0,
   1109 		    prot, BUS_SPACE_MAP_LINEAR);
   1110 		return pa;
   1111 	}
   1112 
   1113 #ifdef RADEONFB_MMAP_BARS
   1114 	/*
   1115 	 * restrict all other mappings to processes with superuser privileges
   1116 	 * or the kernel itself
   1117 	 */
   1118 	if (kauth_authorize_generic(kauth_cred_get(), KAUTH_GENERIC_ISSUSER,
   1119 	    NULL) != 0) {
   1120 		aprint_error_dev(sc->sc_dev, "mmap() rejected.\n");
   1121 		return -1;
   1122 	}
   1123 
   1124 	if ((offset >= sc->sc_regaddr) &&
   1125 	    (offset < sc->sc_regaddr + sc->sc_regsz)) {
   1126 		return bus_space_mmap(sc->sc_regt, offset, 0, prot,
   1127 		    BUS_SPACE_MAP_LINEAR);
   1128 	}
   1129 
   1130 	if ((offset >= sc->sc_memaddr) &&
   1131 	    (offset < sc->sc_memaddr + sc->sc_memsz)) {
   1132 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1133 		    BUS_SPACE_MAP_LINEAR);
   1134 	}
   1135 
   1136 	if ((offset >= sc->sc_romaddr) &&
   1137 	    (offset < sc->sc_romaddr + sc->sc_romsz)) {
   1138 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1139 		    BUS_SPACE_MAP_LINEAR);
   1140 	}
   1141 
   1142 #ifdef PCI_MAGIC_IO_RANGE
   1143 	/* allow mapping of IO space */
   1144 	if ((offset >= PCI_MAGIC_IO_RANGE) &&
   1145 	    (offset < PCI_MAGIC_IO_RANGE + 0x10000)) {
   1146 		pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE,
   1147 		    0, prot, 0);
   1148 		return pa;
   1149 	}
   1150 #endif /* PCI_MAGIC_IO_RANGE */
   1151 
   1152 #endif /* RADEONFB_MMAP_BARS */
   1153 
   1154 	return -1;
   1155 }
   1156 
   1157 static void
   1158 radeonfb_loadbios(struct radeonfb_softc *sc, const struct pci_attach_args *pa)
   1159 {
   1160 	bus_space_tag_t		romt;
   1161 	bus_space_handle_t	romh, biosh;
   1162 	bus_size_t		romsz;
   1163 	bus_addr_t		ptr;
   1164 
   1165 	if (pci_mapreg_map(pa, PCI_MAPREG_ROM, PCI_MAPREG_TYPE_ROM,
   1166 		BUS_SPACE_MAP_PREFETCHABLE, &romt, &romh, NULL, &romsz) != 0) {
   1167 		aprint_verbose("%s: unable to map BIOS!\n", XNAME(sc));
   1168 		return;
   1169 	}
   1170 
   1171 	pci_find_rom(pa, romt, romh, PCI_ROM_CODE_TYPE_X86, &biosh,
   1172 	    &sc->sc_biossz);
   1173 	if (sc->sc_biossz == 0) {
   1174 		aprint_verbose("%s: Video BIOS not present\n", XNAME(sc));
   1175 		return;
   1176 	}
   1177 
   1178 	sc->sc_bios = malloc(sc->sc_biossz, M_DEVBUF, M_WAITOK);
   1179 	bus_space_read_region_1(romt, biosh, 0, sc->sc_bios, sc->sc_biossz);
   1180 
   1181 	/* unmap the PCI expansion rom */
   1182 	bus_space_unmap(romt, romh, romsz);
   1183 
   1184 	/* turn off rom decoder now */
   1185 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM,
   1186 	    pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM) &
   1187 	    ~PCI_MAPREG_ROM_ENABLE);
   1188 
   1189 	ptr = GETBIOS16(sc, 0x48);
   1190 	if ((GETBIOS32(sc, ptr + 4) == 0x41544f4d /* "ATOM" */) ||
   1191 	    (GETBIOS32(sc, ptr + 4) == 0x4d4f5441 /* "MOTA" */)) {
   1192 		sc->sc_flags |= RFB_ATOM;
   1193 	}
   1194 
   1195 	aprint_verbose("%s: Found %d KB %s BIOS\n", XNAME(sc),
   1196 	    (unsigned)sc->sc_biossz >> 10, IS_ATOM(sc) ? "ATOM" : "Legacy");
   1197 }
   1198 
   1199 
   1200 uint32_t
   1201 radeonfb_get32(struct radeonfb_softc *sc, uint32_t reg)
   1202 {
   1203 
   1204 	return bus_space_read_4(sc->sc_regt, sc->sc_regh, reg);
   1205 }
   1206 
   1207 void
   1208 radeonfb_put32(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1209 {
   1210 
   1211 	bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, val);
   1212 }
   1213 
   1214 void
   1215 radeonfb_mask32(struct radeonfb_softc *sc, uint32_t reg,
   1216     uint32_t andmask, uint32_t ormask)
   1217 {
   1218 	int		s;
   1219 	uint32_t	val;
   1220 
   1221 	s = splhigh();
   1222 	val = radeonfb_get32(sc, reg);
   1223 	val = (val & andmask) | ormask;
   1224 	radeonfb_put32(sc, reg, val);
   1225 	splx(s);
   1226 }
   1227 
   1228 uint32_t
   1229 radeonfb_getindex(struct radeonfb_softc *sc, uint32_t idx)
   1230 {
   1231 	int		s;
   1232 	uint32_t	val;
   1233 
   1234 	s = splhigh();
   1235 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1236 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1237 	splx(s);
   1238 
   1239 	return (val);
   1240 }
   1241 
   1242 void
   1243 radeonfb_putindex(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1244 {
   1245 	int	s;
   1246 
   1247 	s = splhigh();
   1248 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1249 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1250 	splx(s);
   1251 }
   1252 
   1253 void
   1254 radeonfb_maskindex(struct radeonfb_softc *sc, uint32_t idx,
   1255     uint32_t andmask, uint32_t ormask)
   1256 {
   1257 	int		s;
   1258 	uint32_t	val;
   1259 
   1260 	s = splhigh();
   1261 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1262 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1263 	val = (val & andmask) | ormask;
   1264 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1265 	splx(s);
   1266 }
   1267 
   1268 uint32_t
   1269 radeonfb_getpll(struct radeonfb_softc *sc, uint32_t idx)
   1270 {
   1271 	int		s;
   1272 	uint32_t	val;
   1273 
   1274 	s = splhigh();
   1275 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, idx & 0x3f);
   1276 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1277 	if (HAS_R300CG(sc))
   1278 		radeonfb_r300cg_workaround(sc);
   1279 	splx(s);
   1280 
   1281 	return (val);
   1282 }
   1283 
   1284 void
   1285 radeonfb_putpll(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1286 {
   1287 	int	s;
   1288 
   1289 	s = splhigh();
   1290 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1291 	    RADEON_PLL_WR_EN);
   1292 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1293 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1294 	splx(s);
   1295 }
   1296 
   1297 void
   1298 radeonfb_maskpll(struct radeonfb_softc *sc, uint32_t idx,
   1299     uint32_t andmask, uint32_t ormask)
   1300 {
   1301 	int		s;
   1302 	uint32_t	val;
   1303 
   1304 	s = splhigh();
   1305 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1306 		RADEON_PLL_WR_EN);
   1307 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1308 	val = (val & andmask) | ormask;
   1309 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1310 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1311 	splx(s);
   1312 }
   1313 
   1314 int
   1315 radeonfb_scratch_test(struct radeonfb_softc *sc, int reg, uint32_t v)
   1316 {
   1317 	uint32_t	saved;
   1318 
   1319 	saved = GET32(sc, reg);
   1320 	PUT32(sc, reg, v);
   1321 	if (GET32(sc, reg) != v) {
   1322 		return -1;
   1323 	}
   1324 	PUT32(sc, reg, saved);
   1325 	return 0;
   1326 }
   1327 
   1328 uintmax_t
   1329 radeonfb_getprop_num(struct radeonfb_softc *sc, const char *name,
   1330     uintmax_t defval)
   1331 {
   1332 	prop_number_t	pn;
   1333 	pn = prop_dictionary_get(device_properties(sc->sc_dev), name);
   1334 	if (pn == NULL) {
   1335 		return defval;
   1336 	}
   1337 	KASSERT(prop_object_type(pn) == PROP_TYPE_NUMBER);
   1338 	return (prop_number_integer_value(pn));
   1339 }
   1340 
   1341 int
   1342 radeonfb_getclocks(struct radeonfb_softc *sc)
   1343 {
   1344 	bus_addr_t	ptr;
   1345 	int		refclk = 0;
   1346 	int		refdiv = 0;
   1347 	int		minpll = 0;
   1348 	int		maxpll = 0;
   1349 
   1350 	/* load initial property values if port/board provides them */
   1351 	refclk = radeonfb_getprop_num(sc, "refclk", 0) & 0xffff;
   1352 	refdiv = radeonfb_getprop_num(sc, "refdiv", 0) & 0xffff;
   1353 	minpll = radeonfb_getprop_num(sc, "minpll", 0) & 0xffffffffU;
   1354 	maxpll = radeonfb_getprop_num(sc, "maxpll", 0) & 0xffffffffU;
   1355 
   1356 	if (refclk && refdiv && minpll && maxpll)
   1357 		goto dontprobe;
   1358 
   1359 	if (!sc->sc_biossz) {
   1360 		/* no BIOS */
   1361 		aprint_verbose("%s: No video BIOS, using default clocks\n",
   1362 		    XNAME(sc));
   1363 		if (IS_IGP(sc))
   1364 			refclk = refclk ? refclk : 1432;
   1365 		else
   1366 			refclk = refclk ? refclk : 2700;
   1367 		refdiv = refdiv ? refdiv : 12;
   1368 		minpll = minpll ? minpll : 12500;
   1369 		maxpll = maxpll ? maxpll : 35000;
   1370 	} else if (IS_ATOM(sc)) {
   1371 		/* ATOM BIOS */
   1372 		ptr = GETBIOS16(sc, 0x48);
   1373 		ptr = GETBIOS16(sc, ptr + 32);	/* aka MasterDataStart */
   1374 		ptr = GETBIOS16(sc, ptr + 12);	/* pll info block */
   1375 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 82);
   1376 		minpll = minpll ? minpll : GETBIOS16(sc, ptr + 78);
   1377 		maxpll = maxpll ? maxpll : GETBIOS16(sc, ptr + 32);
   1378 		/*
   1379 		 * ATOM BIOS doesn't supply a reference divider, so we
   1380 		 * have to probe for it.
   1381 		 */
   1382 		if (refdiv < 2)
   1383 			refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1384 			    RADEON_PPLL_REF_DIV_MASK;
   1385 		/*
   1386 		 * if probe is zero, just assume one that should work
   1387 		 * for most parts
   1388 		 */
   1389 		if (refdiv < 2)
   1390 			refdiv = 12;
   1391 
   1392 	} else {
   1393 		/* Legacy BIOS */
   1394 		ptr = GETBIOS16(sc, 0x48);
   1395 		ptr = GETBIOS16(sc, ptr + 0x30);
   1396 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 0x0E);
   1397 		refdiv = refdiv ? refdiv : GETBIOS16(sc, ptr + 0x10);
   1398 		minpll = minpll ? minpll : GETBIOS32(sc, ptr + 0x12);
   1399 		maxpll = maxpll ? maxpll : GETBIOS32(sc, ptr + 0x16);
   1400 	}
   1401 
   1402 
   1403 dontprobe:
   1404 	sc->sc_refclk = refclk * 10;
   1405 	sc->sc_refdiv = refdiv;
   1406 	sc->sc_minpll = minpll * 10;
   1407 	sc->sc_maxpll = maxpll * 10;
   1408 	return 0;
   1409 }
   1410 
   1411 int
   1412 radeonfb_calc_dividers(struct radeonfb_softc *sc, uint32_t dotclock,
   1413     uint32_t *postdivbit, uint32_t *feedbackdiv)
   1414 {
   1415 	int		i;
   1416 	uint32_t	outfreq;
   1417 	int		div;
   1418 
   1419 	DPRINTF(("dot clock: %u\n", dotclock));
   1420 	for (i = 0; (div = radeonfb_dividers[i].divider) != 0; i++) {
   1421 		outfreq = div * dotclock;
   1422 		if ((outfreq >= sc->sc_minpll) &&
   1423 		    (outfreq <= sc->sc_maxpll)) {
   1424 			DPRINTF(("outfreq: %u\n", outfreq));
   1425 			*postdivbit =
   1426 			    ((uint32_t)radeonfb_dividers[i].mask << 16);
   1427 			DPRINTF(("post divider: %d (mask %x)\n", div,
   1428 				    *postdivbit));
   1429 			break;
   1430 		}
   1431 	}
   1432 
   1433 	if (div == 0)
   1434 		return 1;
   1435 
   1436 	*feedbackdiv = DIVIDE(sc->sc_refdiv * outfreq, sc->sc_refclk);
   1437 	DPRINTF(("feedback divider: %d\n", *feedbackdiv));
   1438 	return 0;
   1439 }
   1440 
   1441 #if 0
   1442 #ifdef RADEONFB_DEBUG
   1443 static void
   1444 dump_buffer(const char *pfx, void *buffer, unsigned int size)
   1445 {
   1446 	char		asc[17];
   1447 	unsigned	ptr = (unsigned)buffer;
   1448 	char		*start = (char *)(ptr & ~0xf);
   1449 	char		*end = (char *)(ptr + size);
   1450 
   1451 	end = (char *)(((unsigned)end + 0xf) & ~0xf);
   1452 
   1453 	if (pfx == NULL) {
   1454 		pfx = "";
   1455 	}
   1456 
   1457 	while (start < end) {
   1458 		unsigned offset = (unsigned)start & 0xf;
   1459 		if (offset == 0) {
   1460 			printf("%s%x: ", pfx, (unsigned)start);
   1461 		}
   1462 		if (((unsigned)start < ptr) ||
   1463 		    ((unsigned)start >= (ptr + size))) {
   1464 			printf("  ");
   1465 			asc[offset] = ' ';
   1466 		} else {
   1467 			printf("%02x", *(unsigned char *)start);
   1468 			if ((*start >= ' ') && (*start <= '~')) {
   1469 				asc[offset] = *start;
   1470 			} else {
   1471 				asc[offset] = '.';
   1472 			}
   1473 		}
   1474 		asc[offset + 1] = 0;
   1475 		if (offset % 2) {
   1476 			printf(" ");
   1477 		}
   1478 		if (offset == 15) {
   1479 			printf(" %s\n", asc);
   1480 		}
   1481 		start++;
   1482 	}
   1483 }
   1484 #endif
   1485 #endif
   1486 
   1487 int
   1488 radeonfb_getconnectors(struct radeonfb_softc *sc)
   1489 {
   1490 	int	i;
   1491 	int	found = 0;
   1492 
   1493 	for (i = 0; i < 2; i++) {
   1494 		sc->sc_ports[i].rp_mon_type = RADEON_MT_UNKNOWN;
   1495 		sc->sc_ports[i].rp_ddc_type = RADEON_DDC_NONE;
   1496 		sc->sc_ports[i].rp_dac_type = RADEON_DAC_UNKNOWN;
   1497 		sc->sc_ports[i].rp_conn_type = RADEON_CONN_NONE;
   1498 		sc->sc_ports[i].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1499 	}
   1500 
   1501 	/*
   1502 	 * This logic is borrowed from Xorg's radeon driver.
   1503 	 */
   1504 	if (!sc->sc_biossz)
   1505 		goto nobios;
   1506 
   1507 	if (IS_ATOM(sc)) {
   1508 		/* not done yet */
   1509 	} else {
   1510 		uint16_t	ptr;
   1511 		int		port = 0;
   1512 
   1513 		ptr = GETBIOS16(sc, 0x48);
   1514 		ptr = GETBIOS16(sc, ptr + 0x50);
   1515 		for (i = 1; i < 4; i++) {
   1516 			uint16_t	entry;
   1517 			uint8_t		conn, ddc, dac, tmds;
   1518 
   1519 			/*
   1520 			 * Parse the connector table.  From reading the code,
   1521 			 * it appears to made up of 16-bit entries for each
   1522 			 * connector.  The 16-bits are defined as:
   1523 			 *
   1524 			 * bits 12-15	- connector type (0 == end of table)
   1525 			 * bits 8-11	- DDC type
   1526 			 * bits 5-7	- ???
   1527 			 * bit 4	- TMDS type (1 = EXT, 0 = INT)
   1528 			 * bits 1-3	- ???
   1529 			 * bit 0	- DAC, 1 = TVDAC, 0 = primary
   1530 			 */
   1531 			if (!GETBIOS8(sc, ptr + i * 2) && i > 1)
   1532 				break;
   1533 			entry = GETBIOS16(sc, ptr + i * 2);
   1534 
   1535 			conn = (entry >> 12) & 0xf;
   1536 			ddc = (entry >> 8) & 0xf;
   1537 			dac = (entry & 0x1) ? RADEON_DAC_TVDAC :
   1538 			    RADEON_DAC_PRIMARY;
   1539 			tmds = ((entry >> 4) & 0x1) ? RADEON_TMDS_EXT :
   1540 			    RADEON_TMDS_INT;
   1541 
   1542 			if (conn == RADEON_CONN_NONE)
   1543 				continue;	/* no connector */
   1544 
   1545 			if ((found > 0) &&
   1546 			    (sc->sc_ports[port].rp_ddc_type == ddc)) {
   1547 				/* duplicate entry for same connector */
   1548 				continue;
   1549 			}
   1550 
   1551 			/* internal DDC_DVI port gets priority */
   1552 			if ((ddc == RADEON_DDC_DVI) || (port == 1))
   1553 				port = 0;
   1554 			else
   1555 				port = 1;
   1556 
   1557 			sc->sc_ports[port].rp_ddc_type =
   1558 			    ddc > RADEON_DDC_CRT2 ? RADEON_DDC_NONE : ddc;
   1559 			sc->sc_ports[port].rp_dac_type = dac;
   1560 			sc->sc_ports[port].rp_conn_type =
   1561 			    min(conn, RADEON_CONN_UNSUPPORTED) ;
   1562 
   1563 			sc->sc_ports[port].rp_tmds_type = tmds;
   1564 
   1565 			if ((conn != RADEON_CONN_DVI_I) &&
   1566 			    (conn != RADEON_CONN_DVI_D) &&
   1567 			    (tmds == RADEON_TMDS_INT))
   1568 				sc->sc_ports[port].rp_tmds_type =
   1569 				    RADEON_TMDS_UNKNOWN;
   1570 
   1571 			found += (port + 1);
   1572 		}
   1573 	}
   1574 
   1575 nobios:
   1576 	if (!found) {
   1577 		DPRINTF(("No connector info in BIOS!\n"));
   1578 		/* default, port 0 = internal TMDS, port 1 = CRT */
   1579 		sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1580 		sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1581 		sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1582 		sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1583 		sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1584 
   1585 		sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1586 		sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1587 		sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1588 		sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1589 		sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_EXT;
   1590 	}
   1591 
   1592 	/*
   1593 	 * Fixup for RS300/RS350/RS400 chips, that lack a primary DAC.
   1594 	 * these chips should use TVDAC for the VGA port.
   1595 	 */
   1596 	if (HAS_SDAC(sc)) {
   1597 		if (sc->sc_ports[0].rp_conn_type == RADEON_CONN_CRT) {
   1598 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1599 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1600 		} else {
   1601 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_TVDAC;
   1602 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1603 		}
   1604 	} else if (!HAS_CRTC2(sc)) {
   1605 		sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1606 	}
   1607 
   1608 	for (i = 0; i < 2; i++) {
   1609 		char	edid[128];
   1610 		uint8_t	ddc;
   1611 		struct edid_info *eip = &sc->sc_ports[i].rp_edid;
   1612 		prop_data_t edid_data;
   1613 
   1614 		DPRINTF(("Port #%d:\n", i));
   1615 		DPRINTF(("    conn = %d\n", sc->sc_ports[i].rp_conn_type));
   1616 		DPRINTF(("    ddc = %d\n", sc->sc_ports[i].rp_ddc_type));
   1617 		DPRINTF(("    dac = %d\n", sc->sc_ports[i].rp_dac_type));
   1618 		DPRINTF(("    tmds = %d\n", sc->sc_ports[i].rp_tmds_type));
   1619 
   1620 		sc->sc_ports[i].rp_edid_valid = 0;
   1621 		/* first look for static EDID data */
   1622 		if ((edid_data = prop_dictionary_get(device_properties(
   1623 		    sc->sc_dev), "EDID")) != NULL) {
   1624 
   1625 			aprint_normal_dev(sc->sc_dev, "using static EDID\n");
   1626 			memcpy(edid, prop_data_data_nocopy(edid_data), 128);
   1627 			if (edid_parse(edid, eip) == 0) {
   1628 
   1629 				sc->sc_ports[i].rp_edid_valid = 1;
   1630 			}
   1631 		}
   1632 		/* if we didn't find any we'll try to talk to the monitor */
   1633 		if (sc->sc_ports[i].rp_edid_valid != 1) {
   1634 
   1635 			ddc = sc->sc_ports[i].rp_ddc_type;
   1636 			if (ddc != RADEON_DDC_NONE) {
   1637 				if ((radeonfb_i2c_read_edid(sc, ddc, edid)
   1638 				    == 0) && (edid_parse(edid, eip) == 0)) {
   1639 
   1640 					sc->sc_ports[i].rp_edid_valid = 1;
   1641 					edid_print(eip);
   1642 				}
   1643 			}
   1644 		}
   1645 	}
   1646 
   1647 	return found;
   1648 }
   1649 
   1650 int
   1651 radeonfb_gettmds(struct radeonfb_softc *sc)
   1652 {
   1653 	int	i;
   1654 
   1655 	if (!sc->sc_biossz) {
   1656 		goto nobios;
   1657 	}
   1658 
   1659 	if (IS_ATOM(sc)) {
   1660 		/* XXX: not done yet */
   1661 	} else {
   1662 		uint16_t	ptr;
   1663 		int		n;
   1664 
   1665 		ptr = GETBIOS16(sc, 0x48);
   1666 		ptr = GETBIOS16(sc, ptr + 0x34);
   1667 		DPRINTF(("DFP table revision %d\n", GETBIOS8(sc, ptr)));
   1668 		if (GETBIOS8(sc, ptr) == 3) {
   1669 			/* revision three table */
   1670 			n = GETBIOS8(sc, ptr + 5) + 1;
   1671 			n = min(n, 4);
   1672 
   1673 			memset(sc->sc_tmds_pll, 0, sizeof (sc->sc_tmds_pll));
   1674 			for (i = 0; i < n; i++) {
   1675 				sc->sc_tmds_pll[i].rtp_pll = GETBIOS32(sc,
   1676 				    ptr + i * 10 + 8);
   1677 				sc->sc_tmds_pll[i].rtp_freq = GETBIOS16(sc,
   1678 				    ptr + i * 10 + 0x10);
   1679 				DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1680 					    sc->sc_tmds_pll[i].rtp_freq,
   1681 					    sc->sc_tmds_pll[i].rtp_pll));
   1682 			}
   1683 			return 0;
   1684 		}
   1685 	}
   1686 
   1687 nobios:
   1688 	DPRINTF(("no suitable DFP table present\n"));
   1689 	for (i = 0;
   1690 	     i < sizeof (radeonfb_tmds_pll) / sizeof (radeonfb_tmds_pll[0]);
   1691 	     i++) {
   1692 		int	j;
   1693 
   1694 		if (radeonfb_tmds_pll[i].family != sc->sc_family)
   1695 			continue;
   1696 
   1697 		for (j = 0; j < 4; j++) {
   1698 			sc->sc_tmds_pll[j] = radeonfb_tmds_pll[i].plls[j];
   1699 			DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1700 				    sc->sc_tmds_pll[j].rtp_freq,
   1701 				    sc->sc_tmds_pll[j].rtp_pll));
   1702 		}
   1703 		return 0;
   1704 	}
   1705 
   1706 	return -1;
   1707 }
   1708 
   1709 const struct videomode *
   1710 radeonfb_modelookup(const char *name)
   1711 {
   1712 	int	i;
   1713 
   1714 	for (i = 0; i < videomode_count; i++)
   1715 		if (!strcmp(name, videomode_list[i].name))
   1716 			return &videomode_list[i];
   1717 
   1718 	return NULL;
   1719 }
   1720 
   1721 void
   1722 radeonfb_pllwriteupdate(struct radeonfb_softc *sc, int crtc)
   1723 {
   1724 	if (crtc) {
   1725 		while (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   1726 		    RADEON_P2PLL_ATOMIC_UPDATE_R);
   1727 		SETPLL(sc, RADEON_P2PLL_REF_DIV, RADEON_P2PLL_ATOMIC_UPDATE_W);
   1728 	} else {
   1729 		while (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1730 		    RADEON_PPLL_ATOMIC_UPDATE_R);
   1731 		SETPLL(sc, RADEON_PPLL_REF_DIV, RADEON_PPLL_ATOMIC_UPDATE_W);
   1732 	}
   1733 }
   1734 
   1735 void
   1736 radeonfb_pllwaitatomicread(struct radeonfb_softc *sc, int crtc)
   1737 {
   1738 	int	i;
   1739 
   1740 	for (i = 10000; i; i--) {
   1741 		if (crtc) {
   1742 			if (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   1743 			    RADEON_P2PLL_ATOMIC_UPDATE_R)
   1744 				break;
   1745 		} else {
   1746 			if (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1747 			    RADEON_PPLL_ATOMIC_UPDATE_R)
   1748 				break;
   1749 		}
   1750 	}
   1751 }
   1752 
   1753 void
   1754 radeonfb_program_vclk(struct radeonfb_softc *sc, int dotclock, int crtc)
   1755 {
   1756 	uint32_t	pbit = 0;
   1757 	uint32_t	feed = 0;
   1758 	uint32_t	data;
   1759 #if 1
   1760 	int		i;
   1761 #endif
   1762 
   1763 	radeonfb_calc_dividers(sc, dotclock, &pbit, &feed);
   1764 
   1765 	if (crtc == 0) {
   1766 
   1767 		/* XXXX: mobility workaround missing */
   1768 		/* XXXX: R300 stuff missing */
   1769 
   1770 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   1771 		    RADEON_VCLK_SRC_SEL_CPUCLK,
   1772 		    ~RADEON_VCLK_SRC_SEL_MASK);
   1773 
   1774 		/* put vclk into reset, use atomic updates */
   1775 		SETPLL(sc, RADEON_PPLL_CNTL,
   1776 		    RADEON_PPLL_REFCLK_SEL |
   1777 		    RADEON_PPLL_FBCLK_SEL |
   1778 		    RADEON_PPLL_RESET |
   1779 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   1780 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   1781 
   1782 		/* select clock 3 */
   1783 #if 0
   1784 		PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, RADEON_PLL_DIV_SEL,
   1785 		    ~RADEON_PLL_DIV_SEL);
   1786 #else
   1787 		PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   1788 		    ~RADEON_PLL_DIV_SEL);
   1789 #endif
   1790 
   1791 		/* XXX: R300 family -- program divider differently? */
   1792 
   1793 		/* program reference divider */
   1794 		PATCHPLL(sc, RADEON_PPLL_REF_DIV, sc->sc_refdiv,
   1795 		    ~RADEON_PPLL_REF_DIV_MASK);
   1796 		PRINTPLL(RADEON_PPLL_REF_DIV);
   1797 
   1798 #if 0
   1799 		data = GETPLL(sc, RADEON_PPLL_DIV_3);
   1800 		data &= ~(RADEON_PPLL_FB3_DIV_MASK |
   1801 		    RADEON_PPLL_POST3_DIV_MASK);
   1802 		data |= pbit;
   1803 		data |= (feed & RADEON_PPLL_FB3_DIV_MASK);
   1804 		PUTPLL(sc, RADEON_PPLL_DIV_3, data);
   1805 #else
   1806 		for (i = 0; i < 4; i++) {
   1807 		}
   1808 #endif
   1809 
   1810 		/* use the atomic update */
   1811 		radeonfb_pllwriteupdate(sc, crtc);
   1812 
   1813 		/* and wait for it to complete */
   1814 		radeonfb_pllwaitatomicread(sc, crtc);
   1815 
   1816 		/* program HTOTAL (why?) */
   1817 		PUTPLL(sc, RADEON_HTOTAL_CNTL, 0);
   1818 
   1819 		/* drop reset */
   1820 		CLRPLL(sc, RADEON_PPLL_CNTL,
   1821 		    RADEON_PPLL_RESET | RADEON_PPLL_SLEEP |
   1822 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   1823 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   1824 
   1825 		PRINTPLL(RADEON_PPLL_CNTL);
   1826 
   1827 		/* give clock time to lock */
   1828 		delay(50000);
   1829 
   1830 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   1831 		    RADEON_VCLK_SRC_SEL_PPLLCLK,
   1832 		    ~RADEON_VCLK_SRC_SEL_MASK);
   1833 
   1834 	} else {
   1835 
   1836 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   1837 		    RADEON_PIX2CLK_SRC_SEL_CPUCLK,
   1838 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   1839 
   1840 		/* put vclk into reset, use atomic updates */
   1841 		SETPLL(sc, RADEON_P2PLL_CNTL,
   1842 		    RADEON_P2PLL_RESET |
   1843 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   1844 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   1845 
   1846 		/* XXX: R300 family -- program divider differently? */
   1847 
   1848 		/* program reference divider */
   1849 		PATCHPLL(sc, RADEON_P2PLL_REF_DIV, sc->sc_refdiv,
   1850 		    ~RADEON_P2PLL_REF_DIV_MASK);
   1851 
   1852 		/* program feedback and post dividers */
   1853 		data = GETPLL(sc, RADEON_P2PLL_DIV_0);
   1854 		data &= ~(RADEON_P2PLL_FB0_DIV_MASK |
   1855 		    RADEON_P2PLL_POST0_DIV_MASK);
   1856 		data |= pbit;
   1857 		data |= (feed & RADEON_P2PLL_FB0_DIV_MASK);
   1858 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   1859 
   1860 		/* use the atomic update */
   1861 		radeonfb_pllwriteupdate(sc, crtc);
   1862 
   1863 		/* and wait for it to complete */
   1864 		radeonfb_pllwaitatomicread(sc, crtc);
   1865 
   1866 		/* program HTOTAL (why?) */
   1867 		PUTPLL(sc, RADEON_HTOTAL2_CNTL, 0);
   1868 
   1869 		/* drop reset */
   1870 		CLRPLL(sc, RADEON_P2PLL_CNTL,
   1871 		    RADEON_P2PLL_RESET | RADEON_P2PLL_SLEEP |
   1872 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   1873 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   1874 
   1875 		/* allow time for clock to lock */
   1876 		delay(50000);
   1877 
   1878 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   1879 		    RADEON_PIX2CLK_SRC_SEL_P2PLLCLK,
   1880 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   1881 	}
   1882 	PRINTREG(RADEON_CRTC_MORE_CNTL);
   1883 }
   1884 
   1885 void
   1886 radeonfb_modeswitch(struct radeonfb_display *dp)
   1887 {
   1888 	struct radeonfb_softc	*sc = dp->rd_softc;
   1889 	int			i;
   1890 
   1891 	/* blank the display while we switch modes */
   1892 	radeonfb_blank(dp, 1);
   1893 
   1894 #if 0
   1895 	SET32(sc, RADEON_CRTC_EXT_CNTL,
   1896 	    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   1897 	    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   1898 #endif
   1899 
   1900 	/* these registers might get in the way... */
   1901 	PUT32(sc, RADEON_OVR_CLR, 0);
   1902 	PUT32(sc, RADEON_OVR_WID_LEFT_RIGHT, 0);
   1903 	PUT32(sc, RADEON_OVR_WID_TOP_BOTTOM, 0);
   1904 	PUT32(sc, RADEON_OV0_SCALE_CNTL, 0);
   1905 	PUT32(sc, RADEON_SUBPIC_CNTL, 0);
   1906 	PUT32(sc, RADEON_VIPH_CONTROL, 0);
   1907 	PUT32(sc, RADEON_I2C_CNTL_1, 0);
   1908 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   1909 	PUT32(sc, RADEON_CAP0_TRIG_CNTL, 0);
   1910 	PUT32(sc, RADEON_CAP1_TRIG_CNTL, 0);
   1911 	PUT32(sc, RADEON_SURFACE_CNTL, 0);
   1912 
   1913 	for (i = 0; i < dp->rd_ncrtcs; i++)
   1914 		radeonfb_setcrtc(dp, i);
   1915 
   1916 	/* activate the display */
   1917 	radeonfb_blank(dp, 0);
   1918 }
   1919 
   1920 void
   1921 radeonfb_setcrtc(struct radeonfb_display *dp, int index)
   1922 {
   1923 	int			crtc;
   1924 	struct videomode	*mode;
   1925 	struct radeonfb_softc	*sc;
   1926 	struct radeonfb_crtc	*cp;
   1927 	uint32_t		v;
   1928 	uint32_t		gencntl;
   1929 	uint32_t		htotaldisp;
   1930 	uint32_t		hsyncstrt;
   1931 	uint32_t		vtotaldisp;
   1932 	uint32_t		vsyncstrt;
   1933 	uint32_t		fphsyncstrt;
   1934 	uint32_t		fpvsyncstrt;
   1935 	uint32_t		fphtotaldisp;
   1936 	uint32_t		fpvtotaldisp;
   1937 	uint32_t		pitch;
   1938 
   1939 	sc = dp->rd_softc;
   1940 	cp = &dp->rd_crtcs[index];
   1941 	crtc = cp->rc_number;
   1942 	mode = &cp->rc_videomode;
   1943 
   1944 #if 1
   1945 	pitch = (((dp->rd_virtx * dp->rd_bpp) + ((dp->rd_bpp * 8) - 1)) /
   1946 	    (dp->rd_bpp * 8));
   1947 #else
   1948 	pitch = (((sc->sc_maxx * sc->sc_maxbpp) + ((sc->sc_maxbpp * 8) - 1)) /
   1949 	    (sc->sc_maxbpp * 8));
   1950 #endif
   1951 
   1952 	switch (crtc) {
   1953 	case 0:
   1954 		gencntl = RADEON_CRTC_GEN_CNTL;
   1955 		htotaldisp = RADEON_CRTC_H_TOTAL_DISP;
   1956 		hsyncstrt = RADEON_CRTC_H_SYNC_STRT_WID;
   1957 		vtotaldisp = RADEON_CRTC_V_TOTAL_DISP;
   1958 		vsyncstrt = RADEON_CRTC_V_SYNC_STRT_WID;
   1959 		fpvsyncstrt = RADEON_FP_V_SYNC_STRT_WID;
   1960 		fphsyncstrt = RADEON_FP_H_SYNC_STRT_WID;
   1961 		fpvtotaldisp = RADEON_FP_CRTC_V_TOTAL_DISP;
   1962 		fphtotaldisp = RADEON_FP_CRTC_H_TOTAL_DISP;
   1963 		break;
   1964 	case 1:
   1965 		gencntl = RADEON_CRTC2_GEN_CNTL;
   1966 		htotaldisp = RADEON_CRTC2_H_TOTAL_DISP;
   1967 		hsyncstrt = RADEON_CRTC2_H_SYNC_STRT_WID;
   1968 		vtotaldisp = RADEON_CRTC2_V_TOTAL_DISP;
   1969 		vsyncstrt = RADEON_CRTC2_V_SYNC_STRT_WID;
   1970 		fpvsyncstrt = RADEON_FP_V2_SYNC_STRT_WID;
   1971 		fphsyncstrt = RADEON_FP_H2_SYNC_STRT_WID;
   1972 		fpvtotaldisp = RADEON_FP_CRTC2_V_TOTAL_DISP;
   1973 		fphtotaldisp = RADEON_FP_CRTC2_H_TOTAL_DISP;
   1974 		break;
   1975 	default:
   1976 		panic("Bad CRTC!");
   1977 		break;
   1978 	}
   1979 
   1980 	/*
   1981 	 * CRTC_GEN_CNTL - depth, accelerator mode, etc.
   1982 	 */
   1983 	/* only bother with 32bpp and 8bpp */
   1984 	v = dp->rd_format << RADEON_CRTC_PIX_WIDTH_SHIFT;
   1985 
   1986 	if (crtc == 1) {
   1987 		v |= RADEON_CRTC2_CRT2_ON | RADEON_CRTC2_EN;
   1988 	} else {
   1989 		v |= RADEON_CRTC_EXT_DISP_EN | RADEON_CRTC_EN;
   1990 	}
   1991 
   1992 	if (mode->flags & VID_DBLSCAN)
   1993 		v |= RADEON_CRTC2_DBL_SCAN_EN;
   1994 
   1995 	if (mode->flags & VID_INTERLACE)
   1996 		v |= RADEON_CRTC2_INTERLACE_EN;
   1997 
   1998 	if (mode->flags & VID_CSYNC) {
   1999 		v |= RADEON_CRTC2_CSYNC_EN;
   2000 		if (crtc == 1)
   2001 			v |= RADEON_CRTC2_VSYNC_TRISTAT;
   2002 	}
   2003 
   2004 	PUT32(sc, gencntl, v);
   2005 	DPRINTF(("CRTC%s_GEN_CNTL = %08x\n", crtc ? "2" : "", v));
   2006 
   2007 	/*
   2008 	 * CRTC_EXT_CNTL - preserve disable flags, set ATI linear and EXT_CNT
   2009 	 */
   2010 	v = GET32(sc, RADEON_CRTC_EXT_CNTL);
   2011 	if (crtc == 0) {
   2012 		v &= (RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2013 		    RADEON_CRTC_DISPLAY_DIS);
   2014 		v |= RADEON_XCRT_CNT_EN | RADEON_VGA_ATI_LINEAR;
   2015 		if (mode->flags & VID_CSYNC)
   2016 			v |= RADEON_CRTC_VSYNC_TRISTAT;
   2017 	}
   2018 	/* unconditional turn on CRT, in case first CRTC is DFP */
   2019 	v |= RADEON_CRTC_CRT_ON;
   2020 	PUT32(sc, RADEON_CRTC_EXT_CNTL, v);
   2021 	PRINTREG(RADEON_CRTC_EXT_CNTL);
   2022 
   2023 	/*
   2024 	 * H_TOTAL_DISP
   2025 	 */
   2026 	v = ((mode->hdisplay / 8) - 1) << 16;
   2027 	v |= (mode->htotal / 8) - 1;
   2028 	PUT32(sc, htotaldisp, v);
   2029 	DPRINTF(("CRTC%s_H_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2030 	PUT32(sc, fphtotaldisp, v);
   2031 	DPRINTF(("FP_H%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2032 
   2033 	/*
   2034 	 * H_SYNC_STRT_WID
   2035 	 */
   2036 	v = (((mode->hsync_end - mode->hsync_start) / 8) << 16);
   2037 	v |= mode->hsync_start;
   2038 	if (mode->flags & VID_NHSYNC)
   2039 		v |= RADEON_CRTC_H_SYNC_POL;
   2040 	PUT32(sc, hsyncstrt, v);
   2041 	DPRINTF(("CRTC%s_H_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2042 	PUT32(sc, fphsyncstrt, v);
   2043 	DPRINTF(("FP_H%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2044 
   2045 	/*
   2046 	 * V_TOTAL_DISP
   2047 	 */
   2048 	v = ((mode->vdisplay - 1) << 16);
   2049 	v |= (mode->vtotal - 1);
   2050 	PUT32(sc, vtotaldisp, v);
   2051 	DPRINTF(("CRTC%s_V_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2052 	PUT32(sc, fpvtotaldisp, v);
   2053 	DPRINTF(("FP_V%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2054 
   2055 	/*
   2056 	 * V_SYNC_STRT_WID
   2057 	 */
   2058 	v = ((mode->vsync_end - mode->vsync_start) << 16);
   2059 	v |= (mode->vsync_start - 1);
   2060 	if (mode->flags & VID_NVSYNC)
   2061 		v |= RADEON_CRTC_V_SYNC_POL;
   2062 	PUT32(sc, vsyncstrt, v);
   2063 	DPRINTF(("CRTC%s_V_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2064 	PUT32(sc, fpvsyncstrt, v);
   2065 	DPRINTF(("FP_V%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2066 
   2067 	radeonfb_program_vclk(sc, mode->dot_clock, crtc);
   2068 
   2069 	switch (crtc) {
   2070 	case 0:
   2071 		PUT32(sc, RADEON_CRTC_OFFSET, 0);
   2072 		PUT32(sc, RADEON_CRTC_OFFSET_CNTL, 0);
   2073 		PUT32(sc, RADEON_CRTC_PITCH, pitch);
   2074 		CLR32(sc, RADEON_DISP_MERGE_CNTL, RADEON_DISP_RGB_OFFSET_EN);
   2075 
   2076 		CLR32(sc, RADEON_CRTC_EXT_CNTL,
   2077 		    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2078 		    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2079 		CLR32(sc, RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B);
   2080 		PRINTREG(RADEON_CRTC_EXT_CNTL);
   2081 		PRINTREG(RADEON_CRTC_GEN_CNTL);
   2082 		PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   2083 		break;
   2084 
   2085 	case 1:
   2086 		PUT32(sc, RADEON_CRTC2_OFFSET, 0);
   2087 		PUT32(sc, RADEON_CRTC2_OFFSET_CNTL, 0);
   2088 		PUT32(sc, RADEON_CRTC2_PITCH, pitch);
   2089 		CLR32(sc, RADEON_DISP2_MERGE_CNTL, RADEON_DISP2_RGB_OFFSET_EN);
   2090 		CLR32(sc, RADEON_CRTC2_GEN_CNTL,
   2091 		    RADEON_CRTC2_VSYNC_DIS |
   2092 		    RADEON_CRTC2_HSYNC_DIS |
   2093 		    RADEON_CRTC2_DISP_DIS | RADEON_CRTC2_DISP_REQ_EN_B);
   2094 		PRINTREG(RADEON_CRTC2_GEN_CNTL);
   2095 		break;
   2096 	}
   2097 }
   2098 
   2099 int
   2100 radeonfb_isblank(struct radeonfb_display *dp)
   2101 {
   2102 	uint32_t	reg, mask;
   2103 
   2104 	if (dp->rd_crtcs[0].rc_number) {
   2105 		reg = RADEON_CRTC2_GEN_CNTL;
   2106 		mask = RADEON_CRTC2_DISP_DIS;
   2107 	} else {
   2108 		reg = RADEON_CRTC_EXT_CNTL;
   2109 		mask = RADEON_CRTC_DISPLAY_DIS;
   2110 	}
   2111 	return ((GET32(dp->rd_softc, reg) & mask) ? 1 : 0);
   2112 }
   2113 
   2114 void
   2115 radeonfb_blank(struct radeonfb_display *dp, int blank)
   2116 {
   2117 	struct radeonfb_softc	*sc = dp->rd_softc;
   2118 	uint32_t		reg, mask;
   2119 	uint32_t		fpreg, fpval;
   2120 	int			i;
   2121 
   2122 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   2123 
   2124 		if (dp->rd_crtcs[i].rc_number) {
   2125 			reg = RADEON_CRTC2_GEN_CNTL;
   2126 			mask = RADEON_CRTC2_DISP_DIS;
   2127 			fpreg = RADEON_FP2_GEN_CNTL;
   2128 			fpval = RADEON_FP2_ON;
   2129 		} else {
   2130 			reg = RADEON_CRTC_EXT_CNTL;
   2131 			mask = RADEON_CRTC_DISPLAY_DIS;
   2132 			fpreg = RADEON_FP_GEN_CNTL;
   2133 			fpval = RADEON_FP_FPON;
   2134 		}
   2135 
   2136 		if (blank) {
   2137 			SET32(sc, reg, mask);
   2138 			CLR32(sc, fpreg, fpval);
   2139 		} else {
   2140 			CLR32(sc, reg, mask);
   2141 			SET32(sc, fpreg, fpval);
   2142 		}
   2143 	}
   2144 	PRINTREG(RADEON_FP_GEN_CNTL);
   2145 	PRINTREG(RADEON_FP2_GEN_CNTL);
   2146 }
   2147 
   2148 void
   2149 radeonfb_init_screen(void *cookie, struct vcons_screen *scr, int existing,
   2150     long *defattr)
   2151 {
   2152 	struct radeonfb_display *dp = cookie;
   2153 	struct rasops_info *ri = &scr->scr_ri;
   2154 
   2155 	/* initialize font subsystem */
   2156 	wsfont_init();
   2157 
   2158 	DPRINTF(("init screen called, existing %d\n", existing));
   2159 
   2160 	ri->ri_depth = dp->rd_bpp;
   2161 	ri->ri_width = dp->rd_virtx;
   2162 	ri->ri_height = dp->rd_virty;
   2163 	ri->ri_stride = dp->rd_stride;
   2164 	ri->ri_flg = RI_CENTER;
   2165 	if (ri->ri_depth == 32) {
   2166 		ri->ri_flg |= RI_ENABLE_ALPHA;
   2167 	}
   2168 	ri->ri_bits = (void *)dp->rd_fbptr;
   2169 
   2170 #ifdef VCONS_DRAW_INTR
   2171 	scr->scr_flags |= VCONS_DONT_READ;
   2172 #endif
   2173 
   2174 	/* this is rgb in "big-endian order..." */
   2175 	ri->ri_rnum = 8;
   2176 	ri->ri_gnum = 8;
   2177 	ri->ri_bnum = 8;
   2178 	ri->ri_rpos = 16;
   2179 	ri->ri_gpos = 8;
   2180 	ri->ri_bpos = 0;
   2181 
   2182 	if (existing) {
   2183 		ri->ri_flg |= RI_CLEAR;
   2184 
   2185 		/* start a modeswitch now */
   2186 		radeonfb_modeswitch(dp);
   2187 	}
   2188 
   2189 	/*
   2190 	 * XXX: font selection should be based on properties, with some
   2191 	 * normal/reasonable default.
   2192 	 */
   2193 
   2194 	/* initialize and look for an initial font */
   2195 	rasops_init(ri, 0, 0);
   2196 	ri->ri_caps = WSSCREEN_WSCOLORS;
   2197 
   2198 	rasops_reconfig(ri, dp->rd_virty / ri->ri_font->fontheight,
   2199 		    dp->rd_virtx / ri->ri_font->fontwidth);
   2200 
   2201 	/* enable acceleration */
   2202 	dp->rd_putchar = ri->ri_ops.putchar;
   2203 	ri->ri_ops.copyrows = radeonfb_copyrows;
   2204 	ri->ri_ops.copycols = radeonfb_copycols;
   2205 	ri->ri_ops.eraserows = radeonfb_eraserows;
   2206 	ri->ri_ops.erasecols = radeonfb_erasecols;
   2207 	/* pick a putchar method based on font and Radeon model */
   2208 	if (ri->ri_font->stride < ri->ri_font->fontwidth) {
   2209 		/* got a bitmap font */
   2210 		if (IS_R300(dp->rd_softc)) {
   2211 			/*
   2212 			 * radeonfb_putchar() doesn't work right on some R3xx
   2213 			 * so we use software drawing here, the wrapper just
   2214 			 *  makes sure the engine is idle before scribbling
   2215 			 * into vram
   2216 			 */
   2217 			ri->ri_ops.putchar = radeonfb_putchar_wrapper;
   2218 		} else {
   2219 			ri->ri_ops.putchar = radeonfb_putchar;
   2220 		}
   2221 	} else {
   2222 		/* got an alpha font */
   2223 		ri->ri_ops.putchar = radeonfb_putchar_aa32;
   2224 	}
   2225 	ri->ri_ops.cursor = radeonfb_cursor;
   2226 }
   2227 
   2228 void
   2229 radeonfb_set_fbloc(struct radeonfb_softc *sc)
   2230 {
   2231 	uint32_t	gen, ext, gen2 = 0;
   2232 	uint32_t	agploc, aperbase, apersize, mcfbloc;
   2233 
   2234 	gen = GET32(sc, RADEON_CRTC_GEN_CNTL);
   2235 	ext = GET32(sc, RADEON_CRTC_EXT_CNTL);
   2236 	agploc = GET32(sc, RADEON_MC_AGP_LOCATION);
   2237 	aperbase = GET32(sc, RADEON_CONFIG_APER_0_BASE);
   2238 	apersize = GET32(sc, RADEON_CONFIG_APER_SIZE);
   2239 
   2240 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISP_REQ_EN_B);
   2241 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISPLAY_DIS);
   2242 	//PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISPLAY_DIS);
   2243 	//PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISP_REQ_EN_B);
   2244 
   2245 	if (HAS_CRTC2(sc)) {
   2246 		gen2 = GET32(sc, RADEON_CRTC2_GEN_CNTL);
   2247 		PUT32(sc, RADEON_CRTC2_GEN_CNTL,
   2248 		    gen2 | RADEON_CRTC2_DISP_REQ_EN_B);
   2249 	}
   2250 
   2251 	delay(100000);
   2252 
   2253 	mcfbloc = (aperbase >> 16) |
   2254 	    ((aperbase + (apersize - 1)) & 0xffff0000);
   2255 
   2256 	sc->sc_aperbase = (mcfbloc & 0xffff) << 16;
   2257 	sc->sc_memsz = apersize;
   2258 
   2259 	if (((agploc & 0xffff) << 16) !=
   2260 	    ((mcfbloc & 0xffff0000U) + 0x10000)) {
   2261 		agploc = mcfbloc & 0xffff0000U;
   2262 		agploc |= ((agploc + 0x10000) >> 16);
   2263 	}
   2264 
   2265 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2266 
   2267 	PUT32(sc, RADEON_MC_FB_LOCATION, mcfbloc);
   2268 	PUT32(sc, RADEON_MC_AGP_LOCATION, agploc);
   2269 
   2270 	DPRINTF(("aperbase = %u\n", aperbase));
   2271 	PRINTREG(RADEON_MC_FB_LOCATION);
   2272 	PRINTREG(RADEON_MC_AGP_LOCATION);
   2273 
   2274 	PUT32(sc, RADEON_DISPLAY_BASE_ADDR, sc->sc_aperbase);
   2275 
   2276 	if (HAS_CRTC2(sc))
   2277 		PUT32(sc, RADEON_DISPLAY2_BASE_ADDR, sc->sc_aperbase);
   2278 
   2279 	PUT32(sc, RADEON_OV0_BASE_ADDR, sc->sc_aperbase);
   2280 
   2281 #if 0
   2282 	/* XXX: what is this AGP garbage? :-) */
   2283 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2284 #endif
   2285 
   2286 	delay(100000);
   2287 
   2288 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen);
   2289 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext);
   2290 
   2291 	if (HAS_CRTC2(sc))
   2292 		PUT32(sc, RADEON_CRTC2_GEN_CNTL, gen2);
   2293 }
   2294 
   2295 void
   2296 radeonfb_init_misc(struct radeonfb_softc *sc)
   2297 {
   2298 	PUT32(sc, RADEON_BUS_CNTL,
   2299 	    RADEON_BUS_MASTER_DIS |
   2300 	    RADEON_BUS_PREFETCH_MODE_ACT |
   2301 	    RADEON_BUS_PCI_READ_RETRY_EN |
   2302 	    RADEON_BUS_PCI_WRT_RETRY_EN |
   2303 	    (3 << RADEON_BUS_RETRY_WS_SHIFT) |
   2304 	    RADEON_BUS_MSTR_RD_MULT |
   2305 	    RADEON_BUS_MSTR_RD_LINE |
   2306 	    RADEON_BUS_RD_DISCARD_EN |
   2307 	    RADEON_BUS_MSTR_DISCONNECT_EN |
   2308 	    RADEON_BUS_READ_BURST);
   2309 
   2310 	PUT32(sc, RADEON_BUS_CNTL1, 0xf0);
   2311 	/* PUT32(sc, RADEON_SEPROM_CNTL1, 0x09ff0000); */
   2312 	PUT32(sc, RADEON_FCP_CNTL, RADEON_FCP0_SRC_GND);
   2313 	PUT32(sc, RADEON_RBBM_CNTL,
   2314 	    (3 << RADEON_RB_SETTLE_SHIFT) |
   2315 	    (4 << RADEON_ABORTCLKS_HI_SHIFT) |
   2316 	    (4 << RADEON_ABORTCLKS_CP_SHIFT) |
   2317 	    (4 << RADEON_ABORTCLKS_CFIFO_SHIFT));
   2318 
   2319 	/* XXX: figure out what these mean! */
   2320 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2321 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2322 	//PUT32(sc, RADEON_DISP_MISC_CNTL, 0x5bb00400);
   2323 
   2324 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2325 	PUT32(sc, RADEON_GEN_INT_STATUS, GET32(sc, RADEON_GEN_INT_STATUS));
   2326 }
   2327 
   2328 /*
   2329  * This loads a linear color map for true color.
   2330  */
   2331 void
   2332 radeonfb_init_palette(struct radeonfb_softc *sc, int crtc)
   2333 {
   2334 	int		i;
   2335 	uint32_t	vclk;
   2336 
   2337 #define	DAC_WIDTH ((1 << 10) - 1)
   2338 #define	CLUT_WIDTH ((1 << 8) - 1)
   2339 #define	CLUT_COLOR(i)      ((i * DAC_WIDTH * 2 / CLUT_WIDTH + 1) / 2)
   2340 
   2341 	vclk = GETPLL(sc, RADEON_VCLK_ECP_CNTL);
   2342 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk & ~RADEON_PIXCLK_DAC_ALWAYS_ONb);
   2343 
   2344 	if (crtc)
   2345 		SET32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2346 	else
   2347 		CLR32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2348 
   2349 	PUT32(sc, RADEON_PALETTE_INDEX, 0);
   2350 	if (sc->sc_displays[crtc].rd_bpp == 0)
   2351 		sc->sc_displays[crtc].rd_bpp = RADEONFB_DEFAULT_DEPTH;
   2352 
   2353 	if (sc->sc_displays[crtc].rd_bpp == 8) {
   2354 		/* ANSI palette */
   2355 		int j = 0;
   2356 
   2357                 for (i = 0; i <= CLUT_WIDTH; ++i) {
   2358                 	PUT32(sc, RADEON_PALETTE_30_DATA,
   2359 				(rasops_cmap[j] << 22) |
   2360 				(rasops_cmap[j + 1] << 12) |
   2361 				(rasops_cmap[j + 2] << 2));
   2362 			j += 3;
   2363 		}
   2364 	} else {
   2365 		/* linear ramp */
   2366 		for (i = 0; i <= CLUT_WIDTH; ++i) {
   2367 			PUT32(sc, RADEON_PALETTE_30_DATA,
   2368 			    (CLUT_COLOR(i) << 10) |
   2369 			    (CLUT_COLOR(i) << 20) |
   2370 			    (CLUT_COLOR(i)));
   2371 		}
   2372 	}
   2373 
   2374 	CLR32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2375 	PRINTREG(RADEON_DAC_CNTL2);
   2376 
   2377 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk);
   2378 }
   2379 
   2380 /*
   2381  * Bugs in some R300 hardware requires this when accessing CLOCK_CNTL_INDEX.
   2382  */
   2383 void
   2384 radeonfb_r300cg_workaround(struct radeonfb_softc *sc)
   2385 {
   2386 	uint32_t	tmp, save;
   2387 
   2388 	save = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   2389 	tmp = save & ~(0x3f | RADEON_PLL_WR_EN);
   2390 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, tmp);
   2391 	tmp = GET32(sc, RADEON_CLOCK_CNTL_DATA);
   2392 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, save);
   2393 }
   2394 
   2395 /*
   2396  * Acceleration entry points.
   2397  */
   2398 
   2399 /* this one draws characters using bitmap fonts */
   2400 static void
   2401 radeonfb_putchar(void *cookie, int row, int col, u_int c, long attr)
   2402 {
   2403 	struct rasops_info	*ri = cookie;
   2404 	struct vcons_screen	*scr = ri->ri_hw;
   2405 	struct radeonfb_display	*dp = scr->scr_cookie;
   2406 	struct radeonfb_softc	*sc = dp->rd_softc;
   2407 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2408 	uint32_t		w, h;
   2409 	int			xd, yd, offset, i;
   2410 	uint32_t		bg, fg, gmc;
   2411 	uint32_t		reg;
   2412 	uint8_t			*data8;
   2413 	uint16_t		*data16;
   2414 	void			*data;
   2415 
   2416 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2417 		return;
   2418 
   2419 	if (!CHAR_IN_FONT(c, font))
   2420 		return;
   2421 
   2422 	w = font->fontwidth;
   2423 	h = font->fontheight;
   2424 
   2425 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2426 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2427 
   2428 	xd = ri->ri_xorigin + col * w;
   2429 	yd = ri->ri_yorigin + row * h;
   2430 
   2431 	if (c == 0x20) {
   2432 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   2433 		return;
   2434 	}
   2435 	data = WSFONT_GLYPH(c, font);
   2436 
   2437 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2438 
   2439 	radeonfb_wait_fifo(sc, 9);
   2440 
   2441 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2442 	    RADEON_GMC_BRUSH_NONE |
   2443 	    RADEON_GMC_SRC_DATATYPE_MONO_FG_BG |
   2444 	    RADEON_GMC_DST_CLIPPING |
   2445 	    RADEON_ROP3_S |
   2446 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2447 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2448 	    RADEON_GMC_WR_MSK_DIS |
   2449 	    gmc);
   2450 
   2451 	PUT32(sc, RADEON_SC_LEFT, xd);
   2452 	PUT32(sc, RADEON_SC_RIGHT, xd + w);
   2453 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, fg);
   2454 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, bg);
   2455 	PUT32(sc, RADEON_DP_CNTL,
   2456 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2457 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2458 
   2459 	PUT32(sc, RADEON_SRC_X_Y, 0);
   2460 	offset = 32 - (font->stride << 3);
   2461 	PUT32(sc, RADEON_DST_X_Y, ((xd - offset) << 16) | yd);
   2462 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (32 << 16) | h);
   2463 
   2464 	radeonfb_wait_fifo(sc, h);
   2465 	switch (font->stride) {
   2466 		case 1: {
   2467 			data8 = data;
   2468 			for (i = 0; i < h; i++) {
   2469 				reg = *data8;
   2470 				bus_space_write_stream_4(sc->sc_regt,
   2471 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   2472 				data8++;
   2473 			}
   2474 			break;
   2475 		}
   2476 		case 2: {
   2477 			data16 = data;
   2478 			for (i = 0; i < h; i++) {
   2479 				reg = *data16;
   2480 				bus_space_write_stream_4(sc->sc_regt,
   2481 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   2482 				data16++;
   2483 			}
   2484 			break;
   2485 		}
   2486 	}
   2487 }
   2488 
   2489 /* ... while this one is for anti-aliased ones */
   2490 static void
   2491 radeonfb_putchar_aa32(void *cookie, int row, int col, u_int c, long attr)
   2492 {
   2493 	struct rasops_info	*ri = cookie;
   2494 	struct vcons_screen	*scr = ri->ri_hw;
   2495 	struct radeonfb_display	*dp = scr->scr_cookie;
   2496 	struct radeonfb_softc	*sc = dp->rd_softc;
   2497 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2498 	uint32_t		bg, fg, gmc;
   2499 	uint8_t			*data;
   2500 	int			w, h, xd, yd;
   2501 	int 			i, r, g, b, aval;
   2502 	int 			rf, gf, bf, rb, gb, bb;
   2503 	uint32_t 		pixel;
   2504 
   2505 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2506 		return;
   2507 
   2508 	if (!CHAR_IN_FONT(c, font))
   2509 		return;
   2510 
   2511 	w = font->fontwidth;
   2512 	h = font->fontheight;
   2513 
   2514 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2515 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2516 
   2517 	xd = ri->ri_xorigin + col * w;
   2518 	yd = ri->ri_yorigin + row * h;
   2519 
   2520 	if (c == 0x20) {
   2521 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   2522 		return;
   2523 	}
   2524 	data = WSFONT_GLYPH(c, font);
   2525 
   2526 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2527 
   2528 	radeonfb_wait_fifo(sc, 5);
   2529 
   2530 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2531 	    RADEON_GMC_BRUSH_NONE |
   2532 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2533 	    RADEON_ROP3_S |
   2534 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2535 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2536 	    RADEON_GMC_WR_MSK_DIS |
   2537 	    gmc);
   2538 
   2539 	PUT32(sc, RADEON_DP_CNTL,
   2540 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2541 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2542 
   2543 	PUT32(sc, RADEON_SRC_X_Y, 0);
   2544 	PUT32(sc, RADEON_DST_X_Y, (xd << 16) | yd);
   2545 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (w << 16) | h);
   2546 
   2547 	rf = (fg >> 16) & 0xff;
   2548 	rb = (bg >> 16) & 0xff;
   2549 	gf = (fg >> 8) & 0xff;
   2550 	gb = (bg >> 8) & 0xff;
   2551 	bf =  fg & 0xff;
   2552 	bb =  bg & 0xff;
   2553 
   2554 	/*
   2555 	 * I doubt we can upload data faster than even the slowest Radeon
   2556 	 * could process them, especially when doing the alpha blending stuff
   2557 	 * along the way, so just make sure there's some room in the FIFO and
   2558 	 * then hammer away
   2559 	 * As it turns out we can, so make periodic stops to let the FIFO
   2560 	 * drain.
   2561 	 */
   2562 	radeonfb_wait_fifo(sc, 20);
   2563 	for (i = 0; i < ri->ri_fontscale; i++) {
   2564 		aval = *data;
   2565 		data++;
   2566 		if (aval == 0) {
   2567 			pixel = bg;
   2568 		} else if (aval == 255) {
   2569 			pixel = fg;
   2570 		} else {
   2571 			r = aval * rf + (255 - aval) * rb;
   2572 			g = aval * gf + (255 - aval) * gb;
   2573 			b = aval * bf + (255 - aval) * bb;
   2574 			pixel = (r & 0xff00) << 8 |
   2575 			        (g & 0xff00) |
   2576 			        (b & 0xff00) >> 8;
   2577 		}
   2578 		if (i & 16)
   2579 			radeonfb_wait_fifo(sc, 20);
   2580 		PUT32(sc, RADEON_HOST_DATA0, pixel);
   2581 	}
   2582 }
   2583 
   2584 /*
   2585  * wrapper for software character drawing
   2586  * just sync the engine and call rasops*_putchar()
   2587  */
   2588 
   2589 static void
   2590 radeonfb_putchar_wrapper(void *cookie, int row, int col, u_int c, long attr)
   2591 {
   2592 	struct rasops_info	*ri = cookie;
   2593 	struct vcons_screen	*scr = ri->ri_hw;
   2594 	struct radeonfb_display	*dp = scr->scr_cookie;
   2595 
   2596 	radeonfb_engine_idle(dp->rd_softc);
   2597 	dp->rd_putchar(ri, row, col, c, attr);
   2598 }
   2599 
   2600 static void
   2601 radeonfb_eraserows(void *cookie, int row, int nrows, long fillattr)
   2602 {
   2603 	struct rasops_info	*ri = cookie;
   2604 	struct vcons_screen	*scr = ri->ri_hw;
   2605 	struct radeonfb_display	*dp = scr->scr_cookie;
   2606 	uint32_t		x, y, w, h, fg, bg, ul;
   2607 
   2608 	/* XXX: check for full emulation mode? */
   2609 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2610 		x = ri->ri_xorigin;
   2611 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   2612 		w = ri->ri_emuwidth;
   2613 		h = ri->ri_font->fontheight * nrows;
   2614 
   2615 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   2616 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   2617 	}
   2618 }
   2619 
   2620 static void
   2621 radeonfb_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
   2622 {
   2623 	struct rasops_info	*ri = cookie;
   2624 	struct vcons_screen	*scr = ri->ri_hw;
   2625 	struct radeonfb_display	*dp = scr->scr_cookie;
   2626 	uint32_t		x, ys, yd, w, h;
   2627 
   2628 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2629 		x = ri->ri_xorigin;
   2630 		ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow;
   2631 		yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow;
   2632 		w = ri->ri_emuwidth;
   2633 		h = ri->ri_font->fontheight * nrows;
   2634 		radeonfb_bitblt(dp, x, ys, x, yd, w, h,
   2635 		    RADEON_ROP3_S, 0xffffffff);
   2636 	}
   2637 }
   2638 
   2639 static void
   2640 radeonfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
   2641 {
   2642 	struct rasops_info	*ri = cookie;
   2643 	struct vcons_screen	*scr = ri->ri_hw;
   2644 	struct radeonfb_display	*dp = scr->scr_cookie;
   2645 	uint32_t		xs, xd, y, w, h;
   2646 
   2647 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2648 		xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol;
   2649 		xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol;
   2650 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   2651 		w = ri->ri_font->fontwidth * ncols;
   2652 		h = ri->ri_font->fontheight;
   2653 		radeonfb_bitblt(dp, xs, y, xd, y, w, h,
   2654 		    RADEON_ROP3_S, 0xffffffff);
   2655 	}
   2656 }
   2657 
   2658 static void
   2659 radeonfb_erasecols(void *cookie, int row, int startcol, int ncols,
   2660     long fillattr)
   2661 {
   2662 	struct rasops_info	*ri = cookie;
   2663 	struct vcons_screen	*scr = ri->ri_hw;
   2664 	struct radeonfb_display	*dp = scr->scr_cookie;
   2665 	uint32_t		x, y, w, h, fg, bg, ul;
   2666 
   2667 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2668 		x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol;
   2669 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   2670 		w = ri->ri_font->fontwidth * ncols;
   2671 		h = ri->ri_font->fontheight;
   2672 
   2673 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   2674 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   2675 	}
   2676 }
   2677 
   2678 static void
   2679 radeonfb_cursor(void *cookie, int on, int row, int col)
   2680 {
   2681 	struct rasops_info *ri = cookie;
   2682 	struct vcons_screen *scr = ri->ri_hw;
   2683 	struct radeonfb_display	*dp = scr->scr_cookie;
   2684 	int x, y, wi, he;
   2685 
   2686 	wi = ri->ri_font->fontwidth;
   2687 	he = ri->ri_font->fontheight;
   2688 
   2689 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2690 		x = ri->ri_ccol * wi + ri->ri_xorigin;
   2691 		y = ri->ri_crow * he + ri->ri_yorigin;
   2692 		/* first turn off the old cursor */
   2693 		if (ri->ri_flg & RI_CURSOR) {
   2694 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   2695 			    RADEON_ROP3_Dn, 0xffffffff);
   2696 			ri->ri_flg &= ~RI_CURSOR;
   2697 		}
   2698 		ri->ri_crow = row;
   2699 		ri->ri_ccol = col;
   2700 		/* then (possibly) turn on the new one */
   2701 		if (on) {
   2702 			x = ri->ri_ccol * wi + ri->ri_xorigin;
   2703 			y = ri->ri_crow * he + ri->ri_yorigin;
   2704 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   2705 			    RADEON_ROP3_Dn, 0xffffffff);
   2706 			ri->ri_flg |= RI_CURSOR;
   2707 		}
   2708 	} else {
   2709 		scr->scr_ri.ri_crow = row;
   2710 		scr->scr_ri.ri_ccol = col;
   2711 		scr->scr_ri.ri_flg &= ~RI_CURSOR;
   2712 	}
   2713 }
   2714 
   2715 /*
   2716  * Underlying acceleration support.
   2717  */
   2718 
   2719 static void
   2720 radeonfb_rectfill(struct radeonfb_display *dp, int dstx, int dsty,
   2721     int width, int height, uint32_t color)
   2722 {
   2723 	struct radeonfb_softc	*sc = dp->rd_softc;
   2724 	uint32_t		gmc;
   2725 
   2726 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2727 
   2728 	radeonfb_wait_fifo(sc, 6);
   2729 
   2730 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2731 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   2732 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2733 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2734 	    RADEON_ROP3_P | gmc);
   2735 
   2736 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, color);
   2737 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   2738 	PUT32(sc, RADEON_DP_CNTL,
   2739 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2740 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2741 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   2742 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   2743 
   2744 }
   2745 
   2746 static void
   2747 radeonfb_bitblt(struct radeonfb_display *dp, int srcx, int srcy,
   2748     int dstx, int dsty, int width, int height, int rop, uint32_t mask)
   2749 {
   2750 	struct radeonfb_softc	*sc = dp->rd_softc;
   2751 	uint32_t		gmc;
   2752 	uint32_t		dir;
   2753 
   2754 	if (dsty < srcy) {
   2755 		dir = RADEON_DST_Y_TOP_TO_BOTTOM;
   2756 	} else {
   2757 		srcy += height - 1;
   2758 		dsty += height - 1;
   2759 		dir = 0;
   2760 	}
   2761 	if (dstx < srcx) {
   2762 		dir |= RADEON_DST_X_LEFT_TO_RIGHT;
   2763 	} else {
   2764 		srcx += width - 1;
   2765 		dstx += width - 1;
   2766 	}
   2767 
   2768 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2769 
   2770 	radeonfb_wait_fifo(sc, 6);
   2771 
   2772 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2773 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   2774 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2775 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2776 	    RADEON_DP_SRC_SOURCE_MEMORY |
   2777 	    rop | gmc);
   2778 
   2779 	PUT32(sc, RADEON_DP_WRITE_MASK, mask);
   2780 	PUT32(sc, RADEON_DP_CNTL, dir);
   2781 	PUT32(sc, RADEON_SRC_Y_X, (srcy << 16) | srcx);
   2782 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   2783 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   2784 }
   2785 
   2786 static void
   2787 radeonfb_engine_idle(struct radeonfb_softc *sc)
   2788 {
   2789 
   2790 	radeonfb_wait_fifo(sc, 64);
   2791 	while ((GET32(sc, RADEON_RBBM_STATUS) &
   2792 			RADEON_RBBM_ACTIVE) != 0);
   2793 	radeonfb_engine_flush(sc);
   2794 }
   2795 
   2796 static void
   2797 radeonfb_wait_fifo(struct radeonfb_softc *sc, int n)
   2798 {
   2799 	int	i;
   2800 
   2801 	for (i = RADEON_TIMEOUT; i; i--) {
   2802 		if ((GET32(sc, RADEON_RBBM_STATUS) &
   2803 			RADEON_RBBM_FIFOCNT_MASK) >= n)
   2804 			return;
   2805 	}
   2806 #ifdef	DIAGNOSTIC
   2807 	if (!i)
   2808 		printf("%s: timed out waiting for fifo (%x)\n",
   2809 		    XNAME(sc), GET32(sc, RADEON_RBBM_STATUS));
   2810 #endif
   2811 }
   2812 
   2813 static void
   2814 radeonfb_engine_flush(struct radeonfb_softc *sc)
   2815 {
   2816 	int	i = 0;
   2817 
   2818 	if (IS_R300(sc)) {
   2819 		SET32(sc, R300_DSTCACHE_CTLSTAT, R300_RB2D_DC_FLUSH_ALL);
   2820 		while (GET32(sc, R300_DSTCACHE_CTLSTAT) & R300_RB2D_DC_BUSY) {
   2821 			i++;
   2822 		}
   2823 	} else {
   2824 		SET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT,
   2825 		    RADEON_RB2D_DC_FLUSH_ALL);
   2826 		while (GET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT) &
   2827 			RADEON_RB2D_DC_BUSY) {
   2828 			i++;
   2829 		}
   2830 	}
   2831 #ifdef DIAGNOSTIC
   2832 	if (i > RADEON_TIMEOUT)
   2833 		printf("%s: engine flush timed out!\n", XNAME(sc));
   2834 #endif
   2835 }
   2836 
   2837 static inline void
   2838 radeonfb_unclip(struct radeonfb_softc *sc)
   2839 {
   2840 
   2841 	radeonfb_wait_fifo(sc, 2);
   2842 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   2843 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   2844 }
   2845 
   2846 static void
   2847 radeonfb_engine_init(struct radeonfb_display *dp)
   2848 {
   2849 	struct radeonfb_softc	*sc = dp->rd_softc;
   2850 	uint32_t		pitch;
   2851 	volatile uint32_t	junk;
   2852 
   2853 	/* no 3D */
   2854 	PUT32(sc, RADEON_RB3D_CNTL, 0);
   2855 
   2856 	radeonfb_engine_reset(sc);
   2857 	pitch = ((dp->rd_virtx * (dp->rd_bpp / 8) + 0x3f)) >> 6;
   2858 
   2859 	radeonfb_wait_fifo(sc, 1);
   2860 	if (!IS_R300(sc))
   2861 		PUT32(sc, RADEON_RB2D_DSTCACHE_MODE, 0);
   2862 
   2863 	radeonfb_wait_fifo(sc, 3);
   2864 	PUT32(sc, RADEON_DEFAULT_PITCH_OFFSET,
   2865 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   2866 
   2867 
   2868 	PUT32(sc, RADEON_DST_PITCH_OFFSET,
   2869 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   2870 	PUT32(sc, RADEON_SRC_PITCH_OFFSET,
   2871 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   2872 
   2873 	radeonfb_wait_fifo(sc, 1);
   2874 #if _BYTE_ORDER == _BIG_ENDIAN
   2875 	SET32(sc, RADEON_DP_DATATYPE, RADEON_HOST_BIG_ENDIAN_EN);
   2876 #else
   2877 	CLR32(sc, RADEON_DP_DATATYPE, RADEON_HOST_BIG_ENDIAN_EN);
   2878 #endif
   2879 	junk = GET32(sc, RADEON_DP_DATATYPE);
   2880 
   2881 	/* default scissors -- no clipping */
   2882 	radeonfb_wait_fifo(sc, 1);
   2883 	PUT32(sc, RADEON_DEFAULT_SC_BOTTOM_RIGHT,
   2884 	    RADEON_DEFAULT_SC_RIGHT_MAX | RADEON_DEFAULT_SC_BOTTOM_MAX);
   2885 
   2886 	radeonfb_wait_fifo(sc, 1);
   2887 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2888 	    (dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT) |
   2889 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2890 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   2891 	    RADEON_GMC_SRC_DATATYPE_COLOR);
   2892 
   2893 	radeonfb_wait_fifo(sc, 10);
   2894 	PUT32(sc, RADEON_DST_LINE_START, 0);
   2895 	PUT32(sc, RADEON_DST_LINE_END, 0);
   2896 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, 0xffffffff);
   2897 	PUT32(sc, RADEON_DP_BRUSH_BKGD_CLR, 0);
   2898 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, 0xffffffff);
   2899 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, 0);
   2900 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   2901 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   2902 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   2903 	PUT32(sc, RADEON_AUX_SC_CNTL, 0);
   2904 	radeonfb_engine_idle(sc);
   2905 }
   2906 
   2907 static void
   2908 radeonfb_engine_reset(struct radeonfb_softc *sc)
   2909 {
   2910 	uint32_t	hpc, rbbm, mclkcntl, clkindex;
   2911 
   2912 	radeonfb_engine_flush(sc);
   2913 
   2914 	clkindex = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   2915 	if (HAS_R300CG(sc))
   2916 		radeonfb_r300cg_workaround(sc);
   2917 	mclkcntl = GETPLL(sc, RADEON_MCLK_CNTL);
   2918 
   2919 	/*
   2920 	 * According to comments in XFree code, resetting the HDP via
   2921 	 * the RBBM_SOFT_RESET can cause bad behavior on some systems.
   2922 	 * So we use HOST_PATH_CNTL instead.
   2923 	 */
   2924 
   2925 	hpc = GET32(sc, RADEON_HOST_PATH_CNTL);
   2926 	rbbm = GET32(sc, RADEON_RBBM_SOFT_RESET);
   2927 	if (IS_R300(sc)) {
   2928 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   2929 		    RADEON_SOFT_RESET_CP |
   2930 		    RADEON_SOFT_RESET_HI |
   2931 		    RADEON_SOFT_RESET_E2);
   2932 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   2933 		PUT32(sc, RADEON_RBBM_SOFT_RESET, 0);
   2934 		/*
   2935 		 * XXX: this bit is not defined in any ATI docs I have,
   2936 		 * nor in the XFree code, but XFree does it.  Why?
   2937 		 */
   2938 		SET32(sc, RADEON_RB2D_DSTCACHE_MODE, (1<<17));
   2939 	} else {
   2940 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   2941 		    RADEON_SOFT_RESET_CP |
   2942 		    RADEON_SOFT_RESET_SE |
   2943 		    RADEON_SOFT_RESET_RE |
   2944 		    RADEON_SOFT_RESET_PP |
   2945 		    RADEON_SOFT_RESET_E2 |
   2946 		    RADEON_SOFT_RESET_RB);
   2947 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   2948 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm &
   2949 		    ~(RADEON_SOFT_RESET_CP |
   2950 			RADEON_SOFT_RESET_SE |
   2951 			RADEON_SOFT_RESET_RE |
   2952 			RADEON_SOFT_RESET_PP |
   2953 			RADEON_SOFT_RESET_E2 |
   2954 			RADEON_SOFT_RESET_RB));
   2955 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   2956 	}
   2957 
   2958 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc | RADEON_HDP_SOFT_RESET);
   2959 	GET32(sc, RADEON_HOST_PATH_CNTL);
   2960 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc);
   2961 
   2962 	if (IS_R300(sc))
   2963 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm);
   2964 
   2965 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, clkindex);
   2966 	PUTPLL(sc, RADEON_MCLK_CNTL, mclkcntl);
   2967 
   2968 	if (HAS_R300CG(sc))
   2969 		radeonfb_r300cg_workaround(sc);
   2970 }
   2971 
   2972 static int
   2973 radeonfb_set_curpos(struct radeonfb_display *dp, struct wsdisplay_curpos *pos)
   2974 {
   2975 	int		x, y;
   2976 
   2977 	x = pos->x;
   2978 	y = pos->y;
   2979 
   2980 	/*
   2981 	 * This doesn't let a cursor move off the screen.  I'm not
   2982 	 * sure if this will have negative effects for e.g. Xinerama.
   2983 	 * I'd guess Xinerama handles it by changing the cursor shape,
   2984 	 * but that needs verification.
   2985 	 */
   2986 	if (x >= dp->rd_virtx)
   2987 		x = dp->rd_virtx - 1;
   2988 	if (x < 0)
   2989 		x = 0;
   2990 	if (y >= dp->rd_virty)
   2991 		y = dp->rd_virty - 1;
   2992 	if (y < 0)
   2993 		y = 0;
   2994 
   2995 	dp->rd_cursor.rc_pos.x = x;
   2996 	dp->rd_cursor.rc_pos.y = y;
   2997 
   2998 	radeonfb_cursor_position(dp);
   2999 	return 0;
   3000 }
   3001 
   3002 static int
   3003 radeonfb_set_cursor(struct radeonfb_display *dp, struct wsdisplay_cursor *wc)
   3004 {
   3005 	unsigned	flags;
   3006 
   3007 	uint8_t		r[2], g[2], b[2];
   3008 	unsigned	index, count;
   3009 	int		i, err;
   3010 	int		pitch, size;
   3011 	struct radeonfb_cursor	nc;
   3012 
   3013 	flags = wc->which;
   3014 
   3015 	/* copy old values */
   3016 	nc = dp->rd_cursor;
   3017 
   3018 	if (flags & WSDISPLAY_CURSOR_DOCMAP) {
   3019 		index = wc->cmap.index;
   3020 		count = wc->cmap.count;
   3021 
   3022 		if (index >= 2 || (index + count) > 2)
   3023 			return EINVAL;
   3024 
   3025 		err = copyin(wc->cmap.red, &r[index], count);
   3026 		if (err)
   3027 			return err;
   3028 		err = copyin(wc->cmap.green, &g[index], count);
   3029 		if (err)
   3030 			return err;
   3031 		err = copyin(wc->cmap.blue, &b[index], count);
   3032 		if (err)
   3033 			return err;
   3034 
   3035 		for (i = index; i < index + count; i++) {
   3036 			nc.rc_cmap[i] =
   3037 			    (r[i] << 16) + (g[i] << 8) + (b[i] << 0);
   3038 		}
   3039 	}
   3040 
   3041 	if (flags & WSDISPLAY_CURSOR_DOSHAPE) {
   3042 		if ((wc->size.x > RADEON_CURSORMAXX) ||
   3043 		    (wc->size.y > RADEON_CURSORMAXY))
   3044 			return EINVAL;
   3045 
   3046 		/* figure bytes per line */
   3047 		pitch = (wc->size.x + 7) / 8;
   3048 		size = pitch * wc->size.y;
   3049 
   3050 		/* clear the old cursor and mask */
   3051 		memset(nc.rc_image, 0, 512);
   3052 		memset(nc.rc_mask, 0, 512);
   3053 
   3054 		nc.rc_size = wc->size;
   3055 
   3056 		if ((err = copyin(wc->image, nc.rc_image, size)) != 0)
   3057 			return err;
   3058 
   3059 		if ((err = copyin(wc->mask, nc.rc_mask, size)) != 0)
   3060 			return err;
   3061 	}
   3062 
   3063 	if (flags & WSDISPLAY_CURSOR_DOHOT) {
   3064 		nc.rc_hot = wc->hot;
   3065 		if (nc.rc_hot.x >= nc.rc_size.x)
   3066 			nc.rc_hot.x = nc.rc_size.x - 1;
   3067 		if (nc.rc_hot.y >= nc.rc_size.y)
   3068 			nc.rc_hot.y = nc.rc_size.y - 1;
   3069 	}
   3070 
   3071 	if (flags & WSDISPLAY_CURSOR_DOPOS) {
   3072 		nc.rc_pos = wc->pos;
   3073 		if (nc.rc_pos.x >= dp->rd_virtx)
   3074 			nc.rc_pos.x = dp->rd_virtx - 1;
   3075 #if 0
   3076 		if (nc.rc_pos.x < 0)
   3077 			nc.rc_pos.x = 0;
   3078 #endif
   3079 		if (nc.rc_pos.y >= dp->rd_virty)
   3080 			nc.rc_pos.y = dp->rd_virty - 1;
   3081 #if 0
   3082 		if (nc.rc_pos.y < 0)
   3083 			nc.rc_pos.y = 0;
   3084 #endif
   3085 	}
   3086 	if (flags & WSDISPLAY_CURSOR_DOCUR) {
   3087 		nc.rc_visible = wc->enable;
   3088 	}
   3089 
   3090 	dp->rd_cursor = nc;
   3091 	radeonfb_cursor_update(dp, wc->which);
   3092 
   3093 	return 0;
   3094 }
   3095 
   3096 /*
   3097  * Change the cursor shape.  Call this with the cursor locked to avoid
   3098  * flickering/tearing.
   3099  */
   3100 static void
   3101 radeonfb_cursor_shape(struct radeonfb_display *dp)
   3102 {
   3103 	uint8_t	and[512], xor[512];
   3104 	int	i, j, src, dst, pitch;
   3105 	const uint8_t	*msk = dp->rd_cursor.rc_mask;
   3106 	const uint8_t	*img = dp->rd_cursor.rc_image;
   3107 
   3108 	/*
   3109 	 * Radeon cursor data interleaves one line of AND data followed
   3110 	 * by a line of XOR data.  (Each line corresponds to a whole hardware
   3111 	 * pitch - i.e. 64 pixels or 8 bytes.)
   3112 	 *
   3113 	 * The cursor is displayed using the following table:
   3114 	 *
   3115 	 * AND	XOR	Result
   3116 	 * ----------------------
   3117 	 *  0    0	Cursor color 0
   3118 	 *  0	 1	Cursor color 1
   3119 	 *  1	 0	Transparent
   3120 	 *  1	 1	Complement of background
   3121 	 *
   3122 	 * Our masks are therefore different from what we were passed.
   3123 	 * Passed in, I'm assuming the data represents either color 0 or 1,
   3124 	 * and a mask, so the passed in table looks like:
   3125 	 *
   3126 	 * IMG	Mask	Result
   3127 	 * -----------------------
   3128 	 *  0	 0	Transparent
   3129 	 *  0	 1	Cursor color 0
   3130 	 *  1	 0	Transparent
   3131 	 *  1	 1	Cursor color 1
   3132 	 *
   3133 	 * IF mask bit == 1, AND = 0, XOR = color.
   3134 	 * IF mask bit == 0, AND = 1, XOR = 0.
   3135 	 *
   3136 	 * hence:	AND = ~(mask);	XOR = color & ~(mask);
   3137 	 */
   3138 
   3139 	pitch = ((dp->rd_cursor.rc_size.x + 7) / 8);
   3140 
   3141 	/* start by assuming all bits are transparent */
   3142 	memset(and, 0xff, 512);
   3143 	memset(xor, 0x00, 512);
   3144 
   3145 	src = 0;
   3146 	dst = 0;
   3147 	for (i = 0; i < 64; i++) {
   3148 		for (j = 0; j < 64; j += 8) {
   3149 			if ((i < dp->rd_cursor.rc_size.y) &&
   3150 			    (j < dp->rd_cursor.rc_size.x)) {
   3151 
   3152 				/* take care to leave odd bits alone */
   3153 				and[dst] &= ~(msk[src]);
   3154 				xor[dst] = img[src] & msk[src];
   3155 				src++;
   3156 			}
   3157 			dst++;
   3158 		}
   3159 	}
   3160 
   3161 	/* copy the image into place */
   3162 	for (i = 0; i < 64; i++) {
   3163 		memcpy((uint8_t *)dp->rd_curptr + (i * 16),
   3164 		    &and[i * 8], 8);
   3165 		memcpy((uint8_t *)dp->rd_curptr + (i * 16) + 8,
   3166 		    &xor[i * 8], 8);
   3167 	}
   3168 }
   3169 
   3170 static void
   3171 radeonfb_cursor_position(struct radeonfb_display *dp)
   3172 {
   3173 	struct radeonfb_softc	*sc = dp->rd_softc;
   3174 	uint32_t		offset, hvoff, hvpos;	/* registers */
   3175 	uint32_t		coff;			/* cursor offset */
   3176 	int			i, x, y, xoff, yoff, crtcoff;
   3177 
   3178 	/*
   3179 	 * XXX: this also needs to handle pan/scan
   3180 	 */
   3181 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3182 
   3183 		struct radeonfb_crtc	*rcp = &dp->rd_crtcs[i];
   3184 
   3185 		if (rcp->rc_number) {
   3186 			offset = RADEON_CUR2_OFFSET;
   3187 			hvoff = RADEON_CUR2_HORZ_VERT_OFF;
   3188 			hvpos = RADEON_CUR2_HORZ_VERT_POSN;
   3189 			crtcoff = RADEON_CRTC2_OFFSET;
   3190 		} else {
   3191 			offset = RADEON_CUR_OFFSET;
   3192 			hvoff = RADEON_CUR_HORZ_VERT_OFF;
   3193 			hvpos = RADEON_CUR_HORZ_VERT_POSN;
   3194 			crtcoff = RADEON_CRTC_OFFSET;
   3195 		}
   3196 
   3197 		x = dp->rd_cursor.rc_pos.x;
   3198 		y = dp->rd_cursor.rc_pos.y;
   3199 
   3200 		while (y < rcp->rc_yoffset) {
   3201 			rcp->rc_yoffset -= RADEON_PANINCREMENT;
   3202 		}
   3203 		while (y >= (rcp->rc_yoffset + rcp->rc_videomode.vdisplay)) {
   3204 			rcp->rc_yoffset += RADEON_PANINCREMENT;
   3205 		}
   3206 		while (x < rcp->rc_xoffset) {
   3207 			rcp->rc_xoffset -= RADEON_PANINCREMENT;
   3208 		}
   3209 		while (x >= (rcp->rc_xoffset + rcp->rc_videomode.hdisplay)) {
   3210 			rcp->rc_xoffset += RADEON_PANINCREMENT;
   3211 		}
   3212 
   3213 		/* adjust for the cursor's hotspot */
   3214 		x -= dp->rd_cursor.rc_hot.x;
   3215 		y -= dp->rd_cursor.rc_hot.y;
   3216 		xoff = yoff = 0;
   3217 
   3218 		if (x >= dp->rd_virtx)
   3219 			x = dp->rd_virtx - 1;
   3220 		if (y >= dp->rd_virty)
   3221 			y = dp->rd_virty - 1;
   3222 
   3223 		/* now adjust cursor so it is relative to viewport */
   3224 		x -= rcp->rc_xoffset;
   3225 		y -= rcp->rc_yoffset;
   3226 
   3227 		/*
   3228 		 * no need to check for fall off, because we should
   3229 		 * never move off the screen entirely!
   3230 		 */
   3231 		coff = 0;
   3232 		if (x < 0) {
   3233 			xoff = -x;
   3234 			x = 0;
   3235 		}
   3236 		if (y < 0) {
   3237 			yoff = -y;
   3238 			y = 0;
   3239 			coff = (yoff * 2) * 8;
   3240 		}
   3241 
   3242 		/* pan the display */
   3243 		PUT32(sc, crtcoff, (rcp->rc_yoffset * dp->rd_stride) +
   3244 		    rcp->rc_xoffset);
   3245 
   3246 		PUT32(sc, offset, (dp->rd_curoff + coff) | RADEON_CUR_LOCK);
   3247 		PUT32(sc, hvoff, (xoff << 16) | (yoff) | RADEON_CUR_LOCK);
   3248 		/* NB: this unlocks the cursor */
   3249 		PUT32(sc, hvpos, (x << 16) | y);
   3250 	}
   3251 }
   3252 
   3253 static void
   3254 radeonfb_cursor_visible(struct radeonfb_display *dp)
   3255 {
   3256 	int		i;
   3257 	uint32_t	gencntl, bit;
   3258 
   3259 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3260 		if (dp->rd_crtcs[i].rc_number) {
   3261 			gencntl = RADEON_CRTC2_GEN_CNTL;
   3262 			bit = RADEON_CRTC2_CUR_EN;
   3263 		} else {
   3264 			gencntl = RADEON_CRTC_GEN_CNTL;
   3265 			bit = RADEON_CRTC_CUR_EN;
   3266 		}
   3267 
   3268 		if (dp->rd_cursor.rc_visible)
   3269 			SET32(dp->rd_softc, gencntl, bit);
   3270 		else
   3271 			CLR32(dp->rd_softc, gencntl, bit);
   3272 	}
   3273 }
   3274 
   3275 static void
   3276 radeonfb_cursor_cmap(struct radeonfb_display *dp)
   3277 {
   3278 	int		i;
   3279 	uint32_t	c0reg, c1reg;
   3280 	struct radeonfb_softc	*sc = dp->rd_softc;
   3281 
   3282 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3283 		if (dp->rd_crtcs[i].rc_number) {
   3284 			c0reg = RADEON_CUR2_CLR0;
   3285 			c1reg = RADEON_CUR2_CLR1;
   3286 		} else {
   3287 			c0reg = RADEON_CUR_CLR0;
   3288 			c1reg = RADEON_CUR_CLR1;
   3289 		}
   3290 
   3291 		PUT32(sc, c0reg, dp->rd_cursor.rc_cmap[0]);
   3292 		PUT32(sc, c1reg, dp->rd_cursor.rc_cmap[1]);
   3293 	}
   3294 }
   3295 
   3296 static void
   3297 radeonfb_cursor_update(struct radeonfb_display *dp, unsigned which)
   3298 {
   3299 	struct radeonfb_softc	*sc;
   3300 	int		i;
   3301 
   3302 	sc = dp->rd_softc;
   3303 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3304 		if (dp->rd_crtcs[i].rc_number) {
   3305 			SET32(sc, RADEON_CUR2_OFFSET, RADEON_CUR_LOCK);
   3306 		} else {
   3307 			SET32(sc, RADEON_CUR_OFFSET,RADEON_CUR_LOCK);
   3308 		}
   3309 	}
   3310 
   3311 	if (which & WSDISPLAY_CURSOR_DOCMAP)
   3312 		radeonfb_cursor_cmap(dp);
   3313 
   3314 	if (which & WSDISPLAY_CURSOR_DOSHAPE)
   3315 		radeonfb_cursor_shape(dp);
   3316 
   3317 	if (which & WSDISPLAY_CURSOR_DOCUR)
   3318 		radeonfb_cursor_visible(dp);
   3319 
   3320 	/* this one is unconditional, because it updates other stuff */
   3321 	radeonfb_cursor_position(dp);
   3322 }
   3323 
   3324 static struct videomode *
   3325 radeonfb_best_refresh(struct videomode *m1, struct videomode *m2)
   3326 {
   3327 	int	r1, r2;
   3328 
   3329 	/* otherwise pick the higher refresh rate */
   3330 	r1 = DIVIDE(DIVIDE(m1->dot_clock, m1->htotal), m1->vtotal);
   3331 	r2 = DIVIDE(DIVIDE(m2->dot_clock, m2->htotal), m2->vtotal);
   3332 
   3333 	return (r1 < r2 ? m2 : m1);
   3334 }
   3335 
   3336 static const struct videomode *
   3337 radeonfb_port_mode(struct radeonfb_softc *sc, struct radeonfb_port *rp,
   3338     int x, int y)
   3339 {
   3340 	struct edid_info	*ep = &rp->rp_edid;
   3341 	struct videomode	*vmp = NULL;
   3342 	int			i;
   3343 
   3344 	if (!rp->rp_edid_valid) {
   3345 		/* fallback to safe mode */
   3346 		return radeonfb_modelookup(sc->sc_defaultmode);
   3347 	}
   3348 
   3349 	/* always choose the preferred mode first! */
   3350 	if (ep->edid_preferred_mode) {
   3351 
   3352 		/* XXX: add auto-stretching support for native mode */
   3353 
   3354 		/* this may want panning to occur, btw */
   3355 		if ((ep->edid_preferred_mode->hdisplay <= x) &&
   3356 		    (ep->edid_preferred_mode->vdisplay <= y))
   3357 			return ep->edid_preferred_mode;
   3358 	}
   3359 
   3360 	for (i = 0; i < ep->edid_nmodes; i++) {
   3361 		/*
   3362 		 * We elect to pick a resolution that is too large for
   3363 		 * the monitor than one that is too small.  This means
   3364 		 * that we will prefer to pan rather than to try to
   3365 		 * center a smaller display on a larger screen.  In
   3366 		 * practice, this shouldn't matter because if a
   3367 		 * monitor can support a larger resolution, it can
   3368 		 * probably also support the smaller.  A specific
   3369 		 * exception is fixed format panels, but hopefully
   3370 		 * they are properly dealt with by the "autostretch"
   3371 		 * logic above.
   3372 		 */
   3373 		if ((ep->edid_modes[i].hdisplay > x) ||
   3374 		    (ep->edid_modes[i].vdisplay > y)) {
   3375 			continue;
   3376 		}
   3377 
   3378 		/*
   3379 		 * at this point, the display mode is no larger than
   3380 		 * what we've requested.
   3381 		 */
   3382 		if (vmp == NULL)
   3383 			vmp = &ep->edid_modes[i];
   3384 
   3385 		/* eliminate smaller modes */
   3386 		if ((vmp->hdisplay >= ep->edid_modes[i].hdisplay) ||
   3387 		    (vmp->vdisplay >= ep->edid_modes[i].vdisplay))
   3388 			continue;
   3389 
   3390 		if ((vmp->hdisplay < ep->edid_modes[i].hdisplay) ||
   3391 		    (vmp->vdisplay < ep->edid_modes[i].vdisplay)) {
   3392 			vmp = &ep->edid_modes[i];
   3393 			continue;
   3394 		}
   3395 
   3396 		KASSERT(vmp->hdisplay == ep->edid_modes[i].hdisplay);
   3397 		KASSERT(vmp->vdisplay == ep->edid_modes[i].vdisplay);
   3398 
   3399 		vmp = radeonfb_best_refresh(vmp, &ep->edid_modes[i]);
   3400 	}
   3401 
   3402 	return (vmp ? vmp : radeonfb_modelookup(sc->sc_defaultmode));
   3403 }
   3404 
   3405 static int
   3406 radeonfb_hasres(struct videomode *list, int nlist, int x, int y)
   3407 {
   3408 	int	i;
   3409 
   3410 	for (i = 0; i < nlist; i++) {
   3411 		if ((x == list[i].hdisplay) &&
   3412 		    (y == list[i].vdisplay)) {
   3413 			return 1;
   3414 		}
   3415 	}
   3416 	return 0;
   3417 }
   3418 
   3419 static void
   3420 radeonfb_pickres(struct radeonfb_display *dp, uint16_t *x, uint16_t *y,
   3421     int pan)
   3422 {
   3423 	struct radeonfb_port	*rp;
   3424 	struct edid_info	*ep;
   3425 	int			i, j;
   3426 
   3427 	*x = 0;
   3428 	*y = 0;
   3429 
   3430 	if (pan) {
   3431 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   3432 			rp = dp->rd_crtcs[i].rc_port;
   3433 			ep = &rp->rp_edid;
   3434 			if (!rp->rp_edid_valid) {
   3435 				/* monitor not present */
   3436 				continue;
   3437 			}
   3438 
   3439 			/*
   3440 			 * For now we are ignoring "conflict" that
   3441 			 * could occur when mixing some modes like
   3442 			 * 1280x1024 and 1400x800.  It isn't clear
   3443 			 * which is better, so the first one wins.
   3444 			 */
   3445 			for (j = 0; j < ep->edid_nmodes; j++) {
   3446 				/*
   3447 				 * ignore resolutions that are too big for
   3448 				 * the radeon
   3449 				 */
   3450 				if (ep->edid_modes[j].hdisplay >
   3451 				    dp->rd_softc->sc_maxx)
   3452 					continue;
   3453 				if (ep->edid_modes[j].vdisplay >
   3454 				    dp->rd_softc->sc_maxy)
   3455 					continue;
   3456 
   3457 				/*
   3458 				 * pick largest resolution, the
   3459 				 * smaller monitor will pan
   3460 				 */
   3461 				if ((ep->edid_modes[j].hdisplay >= *x) &&
   3462 				    (ep->edid_modes[j].vdisplay >= *y)) {
   3463 					*x = ep->edid_modes[j].hdisplay;
   3464 					*y = ep->edid_modes[j].vdisplay;
   3465 				}
   3466 			}
   3467 		}
   3468 
   3469 	} else {
   3470 		struct videomode	modes[64];
   3471 		int			nmodes = 0;
   3472 		int			valid = 0;
   3473 
   3474 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   3475 			/*
   3476 			 * pick the largest resolution in common.
   3477 			 */
   3478 			rp = dp->rd_crtcs[i].rc_port;
   3479 			ep = &rp->rp_edid;
   3480 
   3481 			if (!rp->rp_edid_valid)
   3482 				continue;
   3483 
   3484 			if (!valid) {
   3485 				/*
   3486 				 * Pick the preferred mode for this port
   3487 				 * if available.
   3488 				 */
   3489 				if (ep->edid_preferred_mode) {
   3490 					struct videomode *vmp =
   3491 						ep->edid_preferred_mode;
   3492 
   3493 					if ((vmp->hdisplay <=
   3494 					     dp->rd_softc->sc_maxx) &&
   3495 					    (vmp->vdisplay <=
   3496 					     dp->rd_softc->sc_maxy))
   3497 						modes[nmodes++] = *vmp;
   3498 				} else {
   3499 
   3500 					/* initialize starting list */
   3501 					for (j = 0; j < ep->edid_nmodes; j++) {
   3502 						/*
   3503 						 * ignore resolutions that are
   3504 						 * too big for the radeon
   3505 						 */
   3506 						if (ep->edid_modes[j].hdisplay >
   3507 						    dp->rd_softc->sc_maxx)
   3508 							continue;
   3509 						if (ep->edid_modes[j].vdisplay >
   3510 						    dp->rd_softc->sc_maxy)
   3511 							continue;
   3512 
   3513 						modes[nmodes] =
   3514 							ep->edid_modes[j];
   3515 						nmodes++;
   3516 					}
   3517 				}
   3518 				valid = 1;
   3519 			} else {
   3520 				/* merge into preexisting list */
   3521 				for (j = 0; j < nmodes; j++) {
   3522 					if (!radeonfb_hasres(ep->edid_modes,
   3523 						ep->edid_nmodes,
   3524 						modes[j].hdisplay,
   3525 						modes[j].vdisplay)) {
   3526 						modes[j] = modes[nmodes];
   3527 						j--;
   3528 						nmodes--;
   3529 					}
   3530 				}
   3531 			}
   3532 		}
   3533 
   3534 		/* now we have to pick from the merged list */
   3535 		for (i = 0; i < nmodes; i++) {
   3536 			if ((modes[i].hdisplay >= *x) &&
   3537 			    (modes[i].vdisplay >= *y)) {
   3538 				*x = modes[i].hdisplay;
   3539 				*y = modes[i].vdisplay;
   3540 			}
   3541 		}
   3542 	}
   3543 
   3544 	if ((*x == 0) || (*y == 0)) {
   3545 		/* fallback to safe mode */
   3546 		*x = 640;
   3547 		*y = 480;
   3548 	}
   3549 }
   3550 
   3551 /*
   3552  * backlight levels are linear on:
   3553  * - RV200, RV250, RV280, RV350
   3554  * - but NOT on PowerBook4,3 6,3 6,5
   3555  * according to Linux' radeonfb
   3556  */
   3557 
   3558 /* Get the current backlight level for the display.  */
   3559 
   3560 static int
   3561 radeonfb_get_backlight(struct radeonfb_display *dp)
   3562 {
   3563 	int s;
   3564 	uint32_t level;
   3565 
   3566 	s = spltty();
   3567 
   3568 	level = radeonfb_get32(dp->rd_softc, RADEON_LVDS_GEN_CNTL);
   3569 	level &= RADEON_LVDS_BL_MOD_LEV_MASK;
   3570 	level >>= RADEON_LVDS_BL_MOD_LEV_SHIFT;
   3571 
   3572 	/*
   3573 	 * On some chips, we should negate the backlight level.
   3574 	 * XXX Find out on which chips.
   3575 	 */
   3576 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT)
   3577 	level = RADEONFB_BACKLIGHT_MAX - level;
   3578 
   3579 	splx(s);
   3580 
   3581 	return level;
   3582 }
   3583 
   3584 /* Set the backlight to the given level for the display.  */
   3585 
   3586 static int
   3587 radeonfb_set_backlight(struct radeonfb_display *dp, int level)
   3588 {
   3589 	struct radeonfb_softc *sc;
   3590 	int rlevel, s;
   3591 	uint32_t lvds;
   3592 
   3593 	s = spltty();
   3594 
   3595 	if (level < 0)
   3596 		level = 0;
   3597 	else if (level >= RADEONFB_BACKLIGHT_MAX)
   3598 		level = RADEONFB_BACKLIGHT_MAX;
   3599 
   3600 	sc = dp->rd_softc;
   3601 
   3602 	/* On some chips, we should negate the backlight level. */
   3603 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT) {
   3604 	rlevel = RADEONFB_BACKLIGHT_MAX - level;
   3605 	} else
   3606 	rlevel = level;
   3607 
   3608 	callout_stop(&dp->rd_bl_lvds_co);
   3609 	radeonfb_engine_idle(sc);
   3610 
   3611 	/*
   3612 	 * Turn off the display if the backlight is set to 0, since the
   3613 	 * display is useless without backlight anyway.
   3614 	 */
   3615 	if (level == 0)
   3616 		radeonfb_blank(dp, 1);
   3617 	else if (radeonfb_get_backlight(dp) == 0)
   3618 		radeonfb_blank(dp, 0);
   3619 
   3620 	lvds = radeonfb_get32(sc, RADEON_LVDS_GEN_CNTL);
   3621 	lvds &= ~RADEON_LVDS_DISPLAY_DIS;
   3622 	if (!(lvds & RADEON_LVDS_BLON) || !(lvds & RADEON_LVDS_ON)) {
   3623 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_DIGON;
   3624 		lvds |= RADEON_LVDS_BLON | RADEON_LVDS_EN;
   3625 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   3626 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   3627 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   3628 		lvds |= RADEON_LVDS_ON;
   3629 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_BL_MOD_EN;
   3630 	} else {
   3631 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   3632 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   3633 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   3634 	}
   3635 
   3636 	dp->rd_bl_lvds_val &= ~RADEON_LVDS_STATE_MASK;
   3637 	dp->rd_bl_lvds_val |= lvds & RADEON_LVDS_STATE_MASK;
   3638 	/* XXX What is the correct delay? */
   3639 	callout_schedule(&dp->rd_bl_lvds_co, 200 * hz);
   3640 
   3641 	splx(s);
   3642 
   3643 	return 0;
   3644 }
   3645 
   3646 /*
   3647  * Callout function for delayed operations on the LVDS_GEN_CNTL register.
   3648  * Set the delayed bits in the register, and clear the stored delayed
   3649  * value.
   3650  */
   3651 
   3652 static void radeonfb_lvds_callout(void *arg)
   3653 {
   3654 	struct radeonfb_display *dp = arg;
   3655 	int s;
   3656 
   3657 	s = splhigh();
   3658 
   3659 	radeonfb_mask32(dp->rd_softc, RADEON_LVDS_GEN_CNTL, ~0,
   3660 			dp->rd_bl_lvds_val);
   3661 	dp->rd_bl_lvds_val = 0;
   3662 
   3663 	splx(s);
   3664 }
   3665 
   3666 static void
   3667 radeonfb_brightness_up(device_t dev)
   3668 {
   3669 	struct radeonfb_softc *sc = device_private(dev);
   3670 	int level;
   3671 
   3672 	/* we assume the main display is the first one - need a better way */
   3673 	if (sc->sc_ndisplays < 1) return;
   3674 	level = radeonfb_get_backlight(&sc->sc_displays[0]);
   3675 	level = min(RADEONFB_BACKLIGHT_MAX, level + 5);
   3676 	radeonfb_set_backlight(&sc->sc_displays[0], level);
   3677 }
   3678 
   3679 static void
   3680 radeonfb_brightness_down(device_t dev)
   3681 {
   3682 	struct radeonfb_softc *sc = device_private(dev);
   3683 	int level;
   3684 
   3685 	/* we assume the main display is the first one - need a better way */
   3686 	if (sc->sc_ndisplays < 1) return;
   3687 	level = radeonfb_get_backlight(&sc->sc_displays[0]);
   3688 	level = max(0, level - 5);
   3689 	radeonfb_set_backlight(&sc->sc_displays[0], level);
   3690 }
   3691