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radeonfb.c revision 1.43
      1 /*	$NetBSD: radeonfb.c,v 1.43 2011/04/15 21:47:39 dyoung 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 1.43 2011/04/15 21:47:39 dyoung Exp $");
     74 
     75 #define RADEONFB_DEFAULT_DEPTH 8
     76 
     77 #include <sys/param.h>
     78 #include <sys/systm.h>
     79 #include <sys/device.h>
     80 #include <sys/malloc.h>
     81 #include <sys/bus.h>
     82 #include <sys/kernel.h>
     83 #include <sys/lwp.h>
     84 #include <sys/kauth.h>
     85 
     86 #include <dev/wscons/wsdisplayvar.h>
     87 #include <dev/wscons/wsconsio.h>
     88 #include <dev/wsfont/wsfont.h>
     89 #include <dev/rasops/rasops.h>
     90 #include <dev/videomode/videomode.h>
     91 #include <dev/videomode/edidvar.h>
     92 #include <dev/wscons/wsdisplay_vconsvar.h>
     93 #include <dev/pci/wsdisplay_pci.h>
     94 
     95 #include <dev/pci/pcidevs.h>
     96 #include <dev/pci/pcireg.h>
     97 #include <dev/pci/pcivar.h>
     98 #include <dev/pci/pciio.h>
     99 #include <dev/pci/radeonfbreg.h>
    100 #include <dev/pci/radeonfbvar.h>
    101 #include "opt_radeonfb.h"
    102 
    103 static int radeonfb_match(device_t, cfdata_t, void *);
    104 static void radeonfb_attach(device_t, device_t, void *);
    105 static int radeonfb_ioctl(void *, void *, unsigned long, void *, int,
    106     struct lwp *);
    107 static paddr_t radeonfb_mmap(void *, void *, off_t, int);
    108 static int radeonfb_scratch_test(struct radeonfb_softc *, int, uint32_t);
    109 static void radeonfb_loadbios(struct radeonfb_softc *,
    110     struct pci_attach_args *);
    111 
    112 static uintmax_t radeonfb_getprop_num(struct radeonfb_softc *, const char *,
    113     uintmax_t);
    114 static int radeonfb_getclocks(struct radeonfb_softc *);
    115 static int radeonfb_gettmds(struct radeonfb_softc *);
    116 static int radeonfb_calc_dividers(struct radeonfb_softc *, uint32_t,
    117     uint32_t *, uint32_t *);
    118 static int radeonfb_getconnectors(struct radeonfb_softc *);
    119 static const struct videomode *radeonfb_modelookup(const char *);
    120 static void radeonfb_init_screen(void *, struct vcons_screen *, int, long *);
    121 static void radeonfb_pllwriteupdate(struct radeonfb_softc *, int);
    122 static void radeonfb_pllwaitatomicread(struct radeonfb_softc *, int);
    123 static void radeonfb_program_vclk(struct radeonfb_softc *, int, int);
    124 static void radeonfb_modeswitch(struct radeonfb_display *);
    125 static void radeonfb_setcrtc(struct radeonfb_display *, int);
    126 static void radeonfb_init_misc(struct radeonfb_softc *);
    127 static void radeonfb_set_fbloc(struct radeonfb_softc *);
    128 static void radeonfb_init_palette(struct radeonfb_softc *, int);
    129 static void radeonfb_r300cg_workaround(struct radeonfb_softc *);
    130 
    131 static int radeonfb_isblank(struct radeonfb_display *);
    132 static void radeonfb_blank(struct radeonfb_display *, int);
    133 static int radeonfb_set_cursor(struct radeonfb_display *,
    134     struct wsdisplay_cursor *);
    135 static int radeonfb_set_curpos(struct radeonfb_display *,
    136     struct wsdisplay_curpos *);
    137 
    138 /* acceleration support */
    139 static void  radeonfb_rectfill(struct radeonfb_display *, int dstx, int dsty,
    140     int width, int height, uint32_t color);
    141 static void radeonfb_bitblt(struct radeonfb_display *, int srcx, int srcy,
    142     int dstx, int dsty, int width, int height, int rop, uint32_t mask);
    143 static void radeonfb_feed_bytes(struct radeonfb_display *, int, uint8_t *);
    144 static void radeonfb_setup_mono(struct radeonfb_display *, int, int, int,
    145     int, uint32_t, uint32_t);
    146 
    147 /* hw cursor support */
    148 static void radeonfb_cursor_cmap(struct radeonfb_display *);
    149 static void radeonfb_cursor_shape(struct radeonfb_display *);
    150 static void radeonfb_cursor_position(struct radeonfb_display *);
    151 static void radeonfb_cursor_visible(struct radeonfb_display *);
    152 static void radeonfb_cursor_update(struct radeonfb_display *, unsigned);
    153 
    154 static void radeonfb_wait_fifo(struct radeonfb_softc *, int);
    155 static void radeonfb_engine_idle(struct radeonfb_softc *);
    156 static void radeonfb_engine_flush(struct radeonfb_softc *);
    157 static void radeonfb_engine_reset(struct radeonfb_softc *);
    158 static void radeonfb_engine_init(struct radeonfb_display *);
    159 static inline void radeonfb_unclip(struct radeonfb_softc *);
    160 
    161 static void radeonfb_eraserows(void *, int, int, long);
    162 static void radeonfb_erasecols(void *, int, int, int, long);
    163 static void radeonfb_copyrows(void *, int, int, int);
    164 static void radeonfb_copycols(void *, int, int, int, int);
    165 static void radeonfb_cursor(void *, int, int, int);
    166 static void radeonfb_putchar(void *, int, int, unsigned, long);
    167 static void radeonfb_putchar_wrapper(void *, int, int, unsigned, long);
    168 static int radeonfb_allocattr(void *, int, int, int, long *);
    169 
    170 static int radeonfb_get_backlight(struct radeonfb_display *);
    171 static int radeonfb_set_backlight(struct radeonfb_display *, int);
    172 static void radeonfb_lvds_callout(void *);
    173 
    174 static void radeonfb_brightness_up(device_t);
    175 static void radeonfb_brightness_down(device_t);
    176 
    177 static struct videomode *radeonfb_best_refresh(struct videomode *,
    178     struct videomode *);
    179 static void radeonfb_pickres(struct radeonfb_display *, uint16_t *,
    180     uint16_t *, int);
    181 static const struct videomode *radeonfb_port_mode(struct radeonfb_softc *,
    182     struct radeonfb_port *, int, int);
    183 
    184 static int radeonfb_drm_print(void *, const char *);
    185 
    186 #ifdef	RADEONFB_DEBUG
    187 int	radeon_debug = 1;
    188 #define	DPRINTF(x)	\
    189 	if (radeon_debug) printf x
    190 #define	PRINTREG(r)	DPRINTF((#r " = %08x\n", GET32(sc, r)))
    191 #define	PRINTPLL(r)	DPRINTF((#r " = %08x\n", GETPLL(sc, r)))
    192 #else
    193 #define	DPRINTF(x)
    194 #define	PRINTREG(r)
    195 #define	PRINTPLL(r)
    196 #endif
    197 
    198 #define	ROUNDUP(x,y)	(((x) + ((y) - 1)) & ~((y) - 1))
    199 
    200 #ifndef	RADEON_DEFAULT_MODE
    201 /* any reasonably modern display should handle this */
    202 #define	RADEON_DEFAULT_MODE	"1024x768x60"
    203 #endif
    204 
    205 extern const u_char rasops_cmap[768];
    206 
    207 const char	*radeonfb_default_mode = RADEON_DEFAULT_MODE;
    208 
    209 static struct {
    210 	int		size;		/* minimum memory size (MB) */
    211 	int		maxx;		/* maximum x dimension */
    212 	int		maxy;		/* maximum y dimension */
    213 	int		maxbpp;		/* maximum bpp */
    214 	int		maxdisp;	/* maximum logical display count */
    215 } radeonfb_limits[] = {
    216 	{ 32,	2048, 1536, 32, 2 },
    217 	{ 16,	1600, 1200, 32, 2 },
    218 	{ 8,	1600, 1200, 32, 1 },
    219 	{ 0,	0, 0, 0, 0 },
    220 };
    221 
    222 static struct wsscreen_descr radeonfb_stdscreen = {
    223 	"fb",		/* name */
    224 	0, 0,		/* ncols, nrows */
    225 	NULL,		/* textops */
    226 	8, 16,		/* fontwidth, fontheight */
    227 	WSSCREEN_WSCOLORS | WSSCREEN_REVERSE, /* capabilities */
    228 	0,		/* modecookie */
    229 };
    230 
    231 struct wsdisplay_accessops radeonfb_accessops = {
    232 	radeonfb_ioctl,
    233 	radeonfb_mmap,
    234 	NULL,		/* vcons_alloc_screen */
    235 	NULL,		/* vcons_free_screen */
    236 	NULL,		/* vcons_show_screen */
    237 	NULL,		/* load_font */
    238 	NULL,		/* pollc */
    239 	NULL,		/* scroll */
    240 };
    241 
    242 static struct {
    243 	uint16_t	devid;
    244 	uint16_t	family;
    245 	uint16_t	flags;
    246 } radeonfb_devices[] =
    247 {
    248 	/* R100 family */
    249 	{ PCI_PRODUCT_ATI_RADEON_R100_QD,	RADEON_R100, 0 },
    250 	{ PCI_PRODUCT_ATI_RADEON_R100_QE,	RADEON_R100, 0 },
    251 	{ PCI_PRODUCT_ATI_RADEON_R100_QF,	RADEON_R100, 0 },
    252 	{ PCI_PRODUCT_ATI_RADEON_R100_QG,	RADEON_R100, 0 },
    253 
    254 	/* RV100 family */
    255 	{ PCI_PRODUCT_ATI_RADEON_RV100_LY,	RADEON_RV100, RFB_MOB },
    256 	{ PCI_PRODUCT_ATI_RADEON_RV100_LZ,	RADEON_RV100, RFB_MOB },
    257 	{ PCI_PRODUCT_ATI_RADEON_RV100_QY,	RADEON_RV100, 0 },
    258 	{ PCI_PRODUCT_ATI_RADEON_RV100_QZ,	RADEON_RV100, 0 },
    259 
    260 	/* RS100 family */
    261 	{ PCI_PRODUCT_ATI_RADEON_RS100_4136,	RADEON_RS100, 0 },
    262 	{ PCI_PRODUCT_ATI_RADEON_RS100_4336,	RADEON_RS100, RFB_MOB },
    263 
    264 	/* RS200/RS250 family */
    265 	{ PCI_PRODUCT_ATI_RADEON_RS200_4337,	RADEON_RS200, RFB_MOB },
    266 	{ PCI_PRODUCT_ATI_RADEON_RS200_A7,	RADEON_RS200, 0 },
    267 	{ PCI_PRODUCT_ATI_RADEON_RS250_B7,	RADEON_RS200, RFB_MOB },
    268 	{ PCI_PRODUCT_ATI_RADEON_RS250_D7,	RADEON_RS200, 0 },
    269 
    270 	/* R200 family */
    271 	/* add more R200 products? , 5148 */
    272 	{ PCI_PRODUCT_ATI_RADEON_R200_BB,	RADEON_R200, 0 },
    273 	{ PCI_PRODUCT_ATI_RADEON_R200_BC,	RADEON_R200, 0 },
    274 	{ PCI_PRODUCT_ATI_RADEON_R200_QH,	RADEON_R200, 0 },
    275 	{ PCI_PRODUCT_ATI_RADEON_R200_QL,	RADEON_R200, 0 },
    276 	{ PCI_PRODUCT_ATI_RADEON_R200_QM,	RADEON_R200, 0 },
    277 
    278 	/* RV200 family */
    279 	{ PCI_PRODUCT_ATI_RADEON_RV200_LW,	RADEON_RV200, RFB_MOB },
    280 	{ PCI_PRODUCT_ATI_RADEON_RV200_LX,	RADEON_RV200, RFB_MOB },
    281 	{ PCI_PRODUCT_ATI_RADEON_RV200_QW,	RADEON_RV200, 0 },
    282 	{ PCI_PRODUCT_ATI_RADEON_RV200_QX,	RADEON_RV200, 0 },
    283 
    284 	/* RV250 family */
    285 	{ PCI_PRODUCT_ATI_RADEON_RV250_4966,	RADEON_RV250, 0 },
    286 	{ PCI_PRODUCT_ATI_RADEON_RV250_4967,	RADEON_RV250, 0 },
    287 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C64,	RADEON_RV250, RFB_MOB },
    288 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C66,	RADEON_RV250, RFB_MOB },
    289 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C67,	RADEON_RV250, RFB_MOB },
    290 
    291 	/* RS300 family */
    292 	{ PCI_PRODUCT_ATI_RADEON_RS300_X5,	RADEON_RS300, 0 },
    293 	{ PCI_PRODUCT_ATI_RADEON_RS300_X4,	RADEON_RS300, 0 },
    294 	{ PCI_PRODUCT_ATI_RADEON_RS300_7834,	RADEON_RS300, 0 },
    295 	{ PCI_PRODUCT_ATI_RADEON_RS300_7835,	RADEON_RS300, RFB_MOB },
    296 
    297 	/* RV280 family */
    298 	{ PCI_PRODUCT_ATI_RADEON_RV280_5960,	RADEON_RV280, 0 },
    299 	{ PCI_PRODUCT_ATI_RADEON_RV280_5961,	RADEON_RV280, 0 },
    300 	{ PCI_PRODUCT_ATI_RADEON_RV280_5962,	RADEON_RV280, 0 },
    301 	{ PCI_PRODUCT_ATI_RADEON_RV280_5963,	RADEON_RV280, 0 },
    302 	{ PCI_PRODUCT_ATI_RADEON_RV280_5964,	RADEON_RV280, 0 },
    303 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C61,	RADEON_RV280, RFB_MOB },
    304 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C63,	RADEON_RV280, RFB_MOB },
    305 
    306 	/* R300 family */
    307 	{ PCI_PRODUCT_ATI_RADEON_R300_AD,	RADEON_R300, 0 },
    308 	{ PCI_PRODUCT_ATI_RADEON_R300_AE,	RADEON_R300, 0 },
    309 	{ PCI_PRODUCT_ATI_RADEON_R300_AF,	RADEON_R300, 0 },
    310 	{ PCI_PRODUCT_ATI_RADEON_R300_AG,	RADEON_R300, 0 },
    311 	{ PCI_PRODUCT_ATI_RADEON_R300_ND,	RADEON_R300, 0 },
    312 	{ PCI_PRODUCT_ATI_RADEON_R300_NE,	RADEON_R300, 0 },
    313 	{ PCI_PRODUCT_ATI_RADEON_R300_NF,	RADEON_R300, 0 },
    314 	{ PCI_PRODUCT_ATI_RADEON_R300_NG,	RADEON_R300, 0 },
    315 
    316 	/* RV350/RV360 family */
    317 	{ PCI_PRODUCT_ATI_RADEON_RV350_AP,	RADEON_RV350, 0 },
    318 	{ PCI_PRODUCT_ATI_RADEON_RV350_AQ,	RADEON_RV350, 0 },
    319 	{ PCI_PRODUCT_ATI_RADEON_RV360_AR,	RADEON_RV350, 0 },
    320 	{ PCI_PRODUCT_ATI_RADEON_RV350_AS,	RADEON_RV350, 0 },
    321 	{ PCI_PRODUCT_ATI_RADEON_RV350_AT,	RADEON_RV350, 0 },
    322 	{ PCI_PRODUCT_ATI_RADEON_RV350_AV,	RADEON_RV350, 0 },
    323 	{ PCI_PRODUCT_ATI_RADEON_RV350_NP,	RADEON_RV350, RFB_MOB },
    324 	{ PCI_PRODUCT_ATI_RADEON_RV350_NQ,	RADEON_RV350, RFB_MOB },
    325 	{ PCI_PRODUCT_ATI_RADEON_RV350_NR,	RADEON_RV350, RFB_MOB },
    326 	{ PCI_PRODUCT_ATI_RADEON_RV350_NS,	RADEON_RV350, RFB_MOB },
    327 	{ PCI_PRODUCT_ATI_RADEON_RV350_NT,	RADEON_RV350, RFB_MOB },
    328 	{ PCI_PRODUCT_ATI_RADEON_RV350_NV,	RADEON_RV350, RFB_MOB },
    329 
    330 	/* R350/R360 family */
    331 	{ PCI_PRODUCT_ATI_RADEON_R350_AH,	RADEON_R350, 0 },
    332 	{ PCI_PRODUCT_ATI_RADEON_R350_AI,	RADEON_R350, 0 },
    333 	{ PCI_PRODUCT_ATI_RADEON_R350_AJ,	RADEON_R350, 0 },
    334 	{ PCI_PRODUCT_ATI_RADEON_R350_AK,	RADEON_R350, 0 },
    335 	{ PCI_PRODUCT_ATI_RADEON_R350_NH,	RADEON_R350, 0 },
    336 	{ PCI_PRODUCT_ATI_RADEON_R350_NI,	RADEON_R350, 0 },
    337 	{ PCI_PRODUCT_ATI_RADEON_R350_NK,	RADEON_R350, 0 },
    338 	{ PCI_PRODUCT_ATI_RADEON_R360_NJ,	RADEON_R350, 0 },
    339 
    340 	/* RV380/RV370 family */
    341 	{ PCI_PRODUCT_ATI_RADEON_RV380_3150,	RADEON_RV380, RFB_MOB },
    342 	{ PCI_PRODUCT_ATI_RADEON_RV380_3154,	RADEON_RV380, RFB_MOB },
    343 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E50,	RADEON_RV380, 0 },
    344 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E54,	RADEON_RV380, 0 },
    345 	{ PCI_PRODUCT_ATI_RADEON_RV370_5460,	RADEON_RV380, RFB_MOB },
    346 	{ PCI_PRODUCT_ATI_RADEON_RV370_5464,	RADEON_RV380, RFB_MOB },
    347 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B60,	RADEON_RV380, 0 },
    348 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B64,	RADEON_RV380, 0 },
    349 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B65,	RADEON_RV380, 0 },
    350 
    351 	/* R420/R423 family */
    352 	{ PCI_PRODUCT_ATI_RADEON_R420_JH,	RADEON_R420, 0 },
    353 	{ PCI_PRODUCT_ATI_RADEON_R420_JI,	RADEON_R420, 0 },
    354 	{ PCI_PRODUCT_ATI_RADEON_R420_JJ,	RADEON_R420, 0 },
    355 	{ PCI_PRODUCT_ATI_RADEON_R420_JK,	RADEON_R420, 0 },
    356 	{ PCI_PRODUCT_ATI_RADEON_R420_JL,	RADEON_R420, 0 },
    357 	{ PCI_PRODUCT_ATI_RADEON_R420_JM,	RADEON_R420, 0 },
    358 	{ PCI_PRODUCT_ATI_RADEON_R420_JN,	RADEON_R420, RFB_MOB },
    359 	{ PCI_PRODUCT_ATI_RADEON_R420_JP,	RADEON_R420, 0 },
    360 	{ PCI_PRODUCT_ATI_RADEON_R423_UH,	RADEON_R420, 0 },
    361 	{ PCI_PRODUCT_ATI_RADEON_R423_UI,	RADEON_R420, 0 },
    362 	{ PCI_PRODUCT_ATI_RADEON_R423_UJ,	RADEON_R420, 0 },
    363 	{ PCI_PRODUCT_ATI_RADEON_R423_UK,	RADEON_R420, 0 },
    364 	{ PCI_PRODUCT_ATI_RADEON_R423_UQ,	RADEON_R420, 0 },
    365 	{ PCI_PRODUCT_ATI_RADEON_R423_UR,	RADEON_R420, 0 },
    366 	{ PCI_PRODUCT_ATI_RADEON_R423_UT,	RADEON_R420, 0 },
    367 	{ PCI_PRODUCT_ATI_RADEON_R423_5D57,	RADEON_R420, 0 },
    368 	{ PCI_PRODUCT_ATI_RADEON_R430_554F,	RADEON_R420, 0 },
    369 
    370 	{ 0, 0, 0 }
    371 };
    372 
    373 static struct {
    374 	int divider;
    375 	int mask;
    376 } radeonfb_dividers[] = {
    377 	{  1, 0 },
    378 	{  2, 1 },
    379 	{  3, 4 },
    380 	{  4, 2 },
    381 	{  6, 6 },
    382 	{  8, 3 },
    383 	{ 12, 7 },
    384 	{  0, 0 }
    385 };
    386 
    387 /*
    388  * This table taken from X11.
    389  */
    390 static const struct {
    391 	int			family;
    392 	struct radeon_tmds_pll	plls[4];
    393 } radeonfb_tmds_pll[] = {
    394 	{ RADEON_R100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    395 	{ RADEON_RV100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    396 	{ RADEON_RS100, {{0, 0}}},
    397 	{ RADEON_RV200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    398 	{ RADEON_RS200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    399 	{ RADEON_R200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    400 	{ RADEON_RV250,	{{15500, 0x81b}, {-1, 0x83f}}},
    401 	{ RADEON_RS300, {{0, 0}}},
    402 	{ RADEON_RV280,	{{13000, 0x400f4}, {15000, 0x400f7}}},
    403 	{ RADEON_R300,	{{-1, 0xb01cb}}},
    404 	{ RADEON_R350,	{{-1, 0xb01cb}}},
    405 	{ RADEON_RV350,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    406 	{ RADEON_RV380,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    407 	{ RADEON_R420,	{{-1, 0xb01cb}}},
    408 };
    409 
    410 #define RADEONFB_BACKLIGHT_MAX    255  /* Maximum backlight level. */
    411 
    412 
    413 CFATTACH_DECL(radeonfb, sizeof (struct radeonfb_softc),
    414     radeonfb_match, radeonfb_attach, NULL, NULL);
    415 
    416 static int
    417 radeonfb_match(device_t parent, cfdata_t match, void *aux)
    418 {
    419 	struct pci_attach_args	*pa = aux;
    420 	int			i;
    421 
    422 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_ATI)
    423 		return 0;
    424 
    425 	for (i = 0; radeonfb_devices[i].devid; i++) {
    426 		if (PCI_PRODUCT(pa->pa_id) == radeonfb_devices[i].devid)
    427 			return 100;	/* high to defeat VGA/VESA */
    428 	}
    429 
    430 	return 0;
    431 }
    432 
    433 static void
    434 radeonfb_attach(device_t parent, device_t dev, void *aux)
    435 {
    436 	struct radeonfb_softc	*sc = device_private(dev);
    437 	struct pci_attach_args	*pa = aux;
    438 	const char		*mptr;
    439 	bus_size_t		bsz;
    440 	pcireg_t		screg;
    441 	int			i, j, fg, bg, ul, flags;
    442 	uint32_t		v;
    443 
    444 	sc->sc_id = pa->pa_id;
    445 	for (i = 0; radeonfb_devices[i].devid; i++) {
    446 		if (PCI_PRODUCT(sc->sc_id) == radeonfb_devices[i].devid)
    447 			break;
    448 	}
    449 
    450 	pci_devinfo(sc->sc_id, pa->pa_class, 0, sc->sc_devinfo,
    451 	    sizeof(sc->sc_devinfo));
    452 
    453 	aprint_naive("\n");
    454 	aprint_normal(": %s\n", sc->sc_devinfo);
    455 
    456 	DPRINTF((prop_dictionary_externalize(device_properties(dev))));
    457 
    458 	KASSERT(radeonfb_devices[i].devid != 0);
    459 	sc->sc_pt = pa->pa_tag;
    460 	sc->sc_iot = pa->pa_iot;
    461 	sc->sc_pc = pa->pa_pc;
    462 	sc->sc_family = radeonfb_devices[i].family;
    463 	sc->sc_flags = radeonfb_devices[i].flags;
    464 
    465 	/* enable memory and IO access */
    466 	screg = pci_conf_read(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG);
    467 	screg |= PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE;
    468 	pci_conf_write(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG, screg);
    469 
    470 	/*
    471 	 * Some flags are general to entire chip families, and rather
    472 	 * than clutter up the table with them, we go ahead and set
    473 	 * them here.
    474 	 */
    475 	switch (sc->sc_family) {
    476 	case RADEON_RS100:
    477 	case RADEON_RS200:
    478 		sc->sc_flags |= RFB_IGP | RFB_RV100;
    479 		break;
    480 
    481 	case RADEON_RV100:
    482 	case RADEON_RV200:
    483 	case RADEON_RV250:
    484 	case RADEON_RV280:
    485 		sc->sc_flags |= RFB_RV100;
    486 		break;
    487 
    488 	case RADEON_RS300:
    489 		sc->sc_flags |= RFB_SDAC | RFB_IGP | RFB_RV100;
    490 		break;
    491 
    492 	case RADEON_R300:
    493 	case RADEON_RV350:
    494 	case RADEON_R350:
    495 	case RADEON_RV380:
    496 	case RADEON_R420:
    497 		/* newer chips */
    498 		sc->sc_flags |= RFB_R300;
    499 		break;
    500 
    501 	case RADEON_R100:
    502 		sc->sc_flags |= RFB_NCRTC2;
    503 		break;
    504 	}
    505 
    506 	if ((sc->sc_family == RADEON_RV200) ||
    507 	    (sc->sc_family == RADEON_RV250) ||
    508 	    (sc->sc_family == RADEON_RV280) ||
    509 	    (sc->sc_family == RADEON_RV350)) {
    510 		bool inverted = 0;
    511 		/* backlight level is linear */
    512 		DPRINTF(("found RV* chip, backlight is supposedly linear\n"));
    513 		prop_dictionary_get_bool(device_properties(&sc->sc_dev),
    514 		    "backlight_level_reverted", &inverted);
    515 		if (inverted) {
    516 			DPRINTF(("nope, it's inverted\n"));
    517 			sc->sc_flags |= RFB_INV_BLIGHT;
    518 		}
    519 	} else
    520 		sc->sc_flags |= RFB_INV_BLIGHT;
    521 
    522 	/*
    523 	 * XXX: to support true multihead, this must change.
    524 	 */
    525 	sc->sc_ndisplays = 1;
    526 
    527 	/* XXX: */
    528 	if (!HAS_CRTC2(sc)) {
    529 		sc->sc_ndisplays = 1;
    530 	}
    531 
    532 	if (pci_mapreg_map(pa, RADEON_MAPREG_MMIO, PCI_MAPREG_TYPE_MEM,	0,
    533 		&sc->sc_regt, &sc->sc_regh, &sc->sc_regaddr,
    534 		&sc->sc_regsz) != 0) {
    535 		aprint_error("%s: unable to map registers!\n", XNAME(sc));
    536 		goto error;
    537 	}
    538 
    539 	if (pci_mapreg_info(sc->sc_pc, sc->sc_pt, PCI_MAPREG_ROM,
    540 	     PCI_MAPREG_TYPE_ROM, &sc->sc_romaddr, &sc->sc_romsz, &flags) != 0)
    541 	{
    542 		aprint_error("%s: unable to find ROM!\n", XNAME(sc));
    543 		goto error;
    544 	}
    545 	sc->sc_romt = sc->sc_memt;
    546 
    547 	/* scratch register test... */
    548 	if (radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0x55555555) ||
    549 	    radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0xaaaaaaaa)) {
    550 		aprint_error("%s: scratch register test failed!\n", XNAME(sc));
    551 		goto error;
    552 	}
    553 
    554 	PRINTREG(RADEON_BIOS_4_SCRATCH);
    555 	PRINTREG(RADEON_FP_GEN_CNTL);
    556 	sc->sc_fp_gen_cntl = GET32(sc, RADEON_FP_GEN_CNTL);
    557 	PRINTREG(RADEON_FP2_GEN_CNTL);
    558 	PRINTREG(RADEON_TMDS_CNTL);
    559 	PRINTREG(RADEON_TMDS_TRANSMITTER_CNTL);
    560 	PRINTREG(RADEON_TMDS_PLL_CNTL);
    561 	PRINTREG(RADEON_LVDS_GEN_CNTL);
    562 	PRINTREG(RADEON_FP_HORZ_STRETCH);
    563 	PRINTREG(RADEON_FP_VERT_STRETCH);
    564 
    565 	/* XXX: RV100 specific */
    566 	PUT32(sc, RADEON_TMDS_PLL_CNTL, 0xa27);
    567 
    568 	PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    569 	    RADEON_TMDS_TRANSMITTER_PLLEN,
    570 	    RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST);
    571 
    572 	radeonfb_i2c_init(sc);
    573 
    574 	radeonfb_loadbios(sc, pa);
    575 
    576 #ifdef	RADEONFB_BIOS_INIT
    577 	if (radeonfb_bios_init(sc)) {
    578 		aprint_error("%s: BIOS inititialization failed\n", XNAME(sc));
    579 	}
    580 #endif
    581 
    582 	if (radeonfb_getclocks(sc)) {
    583 		aprint_error("%s: Unable to get reference clocks from BIOS\n",
    584 		    XNAME(sc));
    585 		goto error;
    586 	}
    587 
    588 	if (radeonfb_gettmds(sc)) {
    589 		aprint_error("%s: Unable to identify TMDS PLL settings\n",
    590 		    XNAME(sc));
    591 		goto error;
    592 	}
    593 
    594 	aprint_verbose("%s: refclk = %d.%03d MHz, refdiv = %d "
    595 	    "minpll = %d, maxpll = %d\n", XNAME(sc),
    596 	    (int)sc->sc_refclk / 1000, (int)sc->sc_refclk % 1000,
    597 	    (int)sc->sc_refdiv, (int)sc->sc_minpll, (int)sc->sc_maxpll);
    598 
    599 	radeonfb_getconnectors(sc);
    600 
    601 	radeonfb_set_fbloc(sc);
    602 
    603 	for (i = 0; radeonfb_limits[i].size; i++) {
    604 		if (sc->sc_memsz >= radeonfb_limits[i].size) {
    605 			sc->sc_maxx = radeonfb_limits[i].maxx;
    606 			sc->sc_maxy = radeonfb_limits[i].maxy;
    607 			sc->sc_maxbpp = radeonfb_limits[i].maxbpp;
    608 			/* framebuffer offset, start at a 4K page */
    609 			sc->sc_fboffset = sc->sc_memsz /
    610 			    radeonfb_limits[i].maxdisp;
    611 			/*
    612 			 * we use the fbsize to figure out where we can store
    613 			 * things like cursor data.
    614 			 */
    615 			sc->sc_fbsize =
    616 			    ROUNDUP(ROUNDUP(sc->sc_maxx * sc->sc_maxbpp / 8 ,
    617 					RADEON_STRIDEALIGN) * sc->sc_maxy,
    618 				4096);
    619 			break;
    620 		}
    621 	}
    622 
    623 
    624 	radeonfb_init_misc(sc);
    625 	radeonfb_init_palette(sc, 0);
    626 	if (HAS_CRTC2(sc))
    627 		radeonfb_init_palette(sc, 1);
    628 
    629 	/* program the DAC wirings */
    630 	for (i = 0; i < (HAS_CRTC2(sc) ? 2 : 1); i++) {
    631 		switch (sc->sc_ports[i].rp_dac_type) {
    632 		case RADEON_DAC_PRIMARY:
    633 			PATCH32(sc, RADEON_DAC_CNTL2,
    634 			    i ? RADEON_DAC2_DAC_CLK_SEL : 0,
    635 			    ~RADEON_DAC2_DAC_CLK_SEL);
    636 			break;
    637 		case RADEON_DAC_TVDAC:
    638 			/* we always use the TVDAC to drive a secondary analog
    639 			 * CRT for now.  if we ever support TV-out this will
    640 			 * have to change.
    641 			 */
    642 			SET32(sc, RADEON_DAC_CNTL2,
    643 			    RADEON_DAC2_DAC2_CLK_SEL);
    644 			PATCH32(sc, RADEON_DISP_HW_DEBUG,
    645 			    i ? 0 : RADEON_CRT2_DISP1_SEL,
    646 			    ~RADEON_CRT2_DISP1_SEL);
    647 			break;
    648 		}
    649 	}
    650 	PRINTREG(RADEON_DAC_CNTL2);
    651 	PRINTREG(RADEON_DISP_HW_DEBUG);
    652 
    653 	/* other DAC programming */
    654 	v = GET32(sc, RADEON_DAC_CNTL);
    655 	v &= (RADEON_DAC_RANGE_CNTL_MASK | RADEON_DAC_BLANKING);
    656 	v |= RADEON_DAC_MASK_ALL | RADEON_DAC_8BIT_EN;
    657 	PUT32(sc, RADEON_DAC_CNTL, v);
    658 	PRINTREG(RADEON_DAC_CNTL);
    659 
    660 	/* XXX: this may need more investigation */
    661 	PUT32(sc, RADEON_TV_DAC_CNTL, 0x00280203);
    662 	PRINTREG(RADEON_TV_DAC_CNTL);
    663 
    664 	/* enable TMDS */
    665 	SET32(sc, RADEON_FP_GEN_CNTL,
    666 	    RADEON_FP_TMDS_EN |
    667 		RADEON_FP_CRTC_DONT_SHADOW_VPAR |
    668 		RADEON_FP_CRTC_DONT_SHADOW_HEND);
    669 	/*
    670 	 * XXX
    671 	 * no idea why this is necessary - if I do not clear this bit on my
    672 	 * iBook G4 the screen remains black, even though it's already clear.
    673 	 * It needs to be set on my Sun XVR-100 for the DVI port to work
    674 	 */
    675 
    676 	if (sc->sc_fp_gen_cntl & RADEON_FP_SEL_CRTC2) {
    677 		SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    678 	} else
    679 		CLR32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    680 
    681 	if (HAS_CRTC2(sc))
    682 		SET32(sc, RADEON_FP2_GEN_CNTL, RADEON_FP2_SRC_SEL_CRTC2);
    683 
    684 	/*
    685 	 * we use bus_space_map instead of pci_mapreg, because we don't
    686 	 * need the full aperature space.  no point in wasting virtual
    687 	 * address space we don't intend to use, right?
    688 	 */
    689 	if ((sc->sc_memsz < (4096 * 1024)) ||
    690 	    (pci_mapreg_info(sc->sc_pc, sc->sc_pt, RADEON_MAPREG_VRAM,
    691 		PCI_MAPREG_TYPE_MEM, &sc->sc_memaddr, &bsz, NULL) != 0) ||
    692 	    (bsz < sc->sc_memsz)) {
    693 		sc->sc_memsz = 0;
    694 		aprint_error("%s: Bad frame buffer configuration\n",
    695 		    XNAME(sc));
    696 		goto error;
    697 	}
    698 
    699 	/* 64 MB should be enough -- more just wastes map entries */
    700 	if (sc->sc_memsz > (64 << 20))
    701 		sc->sc_memsz = (64 << 20);
    702 
    703 	sc->sc_memt = pa->pa_memt;
    704 	if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
    705 		BUS_SPACE_MAP_LINEAR, &sc->sc_memh) != 0) {
    706 		sc->sc_memsz = 0;
    707 		aprint_error("%s: Unable to map frame buffer\n", XNAME(sc));
    708 		goto error;
    709 	}
    710 
    711 	aprint_normal("%s: %d MB aperture at 0x%08x, "
    712 	    "%d KB registers at 0x%08x\n", XNAME(sc),
    713 	    (int)sc->sc_memsz >> 20, (unsigned)sc->sc_memaddr,
    714 	    (int)sc->sc_regsz >> 10, (unsigned)sc->sc_regaddr);
    715 
    716 	/* setup default video mode from devprop (allows PROM override) */
    717 	sc->sc_defaultmode = radeonfb_default_mode;
    718 	if (prop_dictionary_get_cstring_nocopy(device_properties(&sc->sc_dev),
    719 	    "videomode", &mptr)) {
    720 
    721 		strncpy(sc->sc_modebuf, mptr, sizeof(sc->sc_modebuf));
    722 		sc->sc_defaultmode = sc->sc_modebuf;
    723 	}
    724 
    725 	/* initialize some basic display parameters */
    726 	for (i = 0; i < sc->sc_ndisplays; i++) {
    727 		struct radeonfb_display *dp = &sc->sc_displays[i];
    728 		struct rasops_info *ri;
    729 		long defattr;
    730 		struct wsemuldisplaydev_attach_args aa;
    731 
    732 		/*
    733 		 * Figure out how many "displays" (desktops) we are going to
    734 		 * support.  If more than one, then each CRTC gets its own
    735 		 * programming.
    736 		 *
    737 		 * XXX: this code needs to change to support mergedfb.
    738 		 * XXX: would be nice to allow this to be overridden
    739 		 */
    740 		if (HAS_CRTC2(sc) && (sc->sc_ndisplays == 1)) {
    741 			DPRINTF(("dual crtcs!\n"));
    742 			dp->rd_ncrtcs = 2;
    743 			dp->rd_crtcs[0].rc_number = 0;
    744 			dp->rd_crtcs[1].rc_number = 1;
    745 		} else {
    746 			dp->rd_ncrtcs = 1;
    747 			dp->rd_crtcs[0].rc_number = i;
    748 		}
    749 
    750 		/* set up port pointer */
    751 		for (j = 0; j < dp->rd_ncrtcs; j++) {
    752 			dp->rd_crtcs[j].rc_port =
    753 			    &sc->sc_ports[dp->rd_crtcs[j].rc_number];
    754 		}
    755 
    756 		dp->rd_softc = sc;
    757 		dp->rd_wsmode = WSDISPLAYIO_MODE_EMUL;
    758 		dp->rd_bg = WS_DEFAULT_BG;
    759 #if 0
    760 		dp->rd_bpp = sc->sc_maxbpp;	/* XXX: for now */
    761 #else
    762 		dp->rd_bpp = RADEONFB_DEFAULT_DEPTH;	/* XXX */
    763 #endif
    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 =
    832 		    (const struct wsscreen_descr **)&dp->rd_wsscreens;
    833 
    834 		vcons_init(&dp->rd_vd, dp, dp->rd_wsscreens,
    835 		    &radeonfb_accessops);
    836 
    837 		dp->rd_vd.init_screen = radeonfb_init_screen;
    838 
    839 		dp->rd_console = 0;
    840 		prop_dictionary_get_bool(device_properties(&sc->sc_dev),
    841 		    "is_console", &dp->rd_console);
    842 
    843 		dp->rd_vscreen.scr_flags |= VCONS_SCREEN_IS_STATIC;
    844 
    845 
    846 		vcons_init_screen(&dp->rd_vd, &dp->rd_vscreen,
    847 		    dp->rd_console, &defattr);
    848 
    849 		ri = &dp->rd_vscreen.scr_ri;
    850 
    851 		/* clear the screen */
    852 		rasops_unpack_attr(defattr, &fg, &bg, &ul);
    853 		radeonfb_rectfill(dp, 0, 0, ri->ri_width, ri->ri_height,
    854 		    ri->ri_devcmap[bg & 0xf]);
    855 
    856 		dp->rd_wsscreens->textops = &ri->ri_ops;
    857 		dp->rd_wsscreens->capabilities = ri->ri_caps;
    858 		dp->rd_wsscreens->nrows = ri->ri_rows;
    859 		dp->rd_wsscreens->ncols = ri->ri_cols;
    860 
    861 #ifdef SPLASHSCREEN
    862 		dp->rd_splash.si_depth = ri->ri_depth;
    863 		dp->rd_splash.si_bits = ri->ri_bits;
    864 		dp->rd_splash.si_hwbits = ri->ri_hwbits;
    865 		dp->rd_splash.si_width = ri->ri_width;
    866 		dp->rd_splash.si_height = ri->ri_height;
    867 		dp->rd_splash.si_stride = ri->ri_stride;
    868 		dp->rd_splash.si_fillrect = NULL;
    869 #endif
    870 		if (dp->rd_console) {
    871 
    872 			radeonfb_modeswitch(dp);
    873 			wsdisplay_cnattach(dp->rd_wsscreens, ri, 0, 0,
    874 			    defattr);
    875 #ifdef SPLASHSCREEN
    876 			if (splash_render(&dp->rd_splash,
    877 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
    878 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    879 			else
    880 #endif
    881 				vcons_replay_msgbuf(&dp->rd_vscreen);
    882 		} else {
    883 
    884 			/*
    885 			 * since we're not the console we can postpone
    886 			 * the rest until someone actually allocates a
    887 			 * screen for us.  but we do clear the screen
    888 			 * at least.
    889 			 */
    890 			memset(ri->ri_bits, 0, 1024);
    891 
    892 			radeonfb_modeswitch(dp);
    893 #ifdef SPLASHSCREEN
    894 			if (splash_render(&dp->rd_splash,
    895 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
    896 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    897 #endif
    898 		}
    899 
    900 		aa.console = dp->rd_console;
    901 		aa.scrdata = &dp->rd_wsscreenlist;
    902 		aa.accessops = &radeonfb_accessops;
    903 		aa.accesscookie = &dp->rd_vd;
    904 
    905 		config_found(&sc->sc_dev, &aa, wsemuldisplaydevprint);
    906 
    907 		radeonfb_blank(dp, 0);
    908 
    909 		/* Initialise delayed lvds operations for backlight. */
    910 		callout_init(&dp->rd_bl_lvds_co, 0);
    911 		callout_setfunc(&dp->rd_bl_lvds_co,
    912 				radeonfb_lvds_callout, dp);
    913 	}
    914 
    915 	/*
    916 	 * if we have console output via firmware like on sparc64 it may
    917 	 * interfere with DAC programming so program the palette again
    918 	 * here after we took over
    919 	 */
    920 	radeonfb_init_palette(sc, 0);
    921 	if (HAS_CRTC2(sc))
    922 		radeonfb_init_palette(sc, 1);
    923 
    924 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_UP,
    925 	    radeonfb_brightness_up, TRUE);
    926 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_DOWN,
    927 	    radeonfb_brightness_down, TRUE);
    928 
    929 	config_found_ia(dev, "drm", aux, radeonfb_drm_print);
    930 
    931 	return;
    932 
    933 error:
    934 	if (sc->sc_biossz)
    935 		free(sc->sc_bios, M_DEVBUF);
    936 
    937 	if (sc->sc_regsz)
    938 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
    939 
    940 	if (sc->sc_memsz)
    941 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
    942 }
    943 
    944 static int
    945 radeonfb_drm_print(void *aux, const char *pnp)
    946 {
    947 	if (pnp)
    948 		aprint_normal("drm at %s", pnp);
    949 	return (UNCONF);
    950 }
    951 
    952 int
    953 radeonfb_ioctl(void *v, void *vs,
    954     unsigned long cmd, void *d, int flag, struct lwp *l)
    955 {
    956 	struct vcons_data	*vd;
    957 	struct radeonfb_display	*dp;
    958 	struct radeonfb_softc	*sc;
    959 	struct wsdisplay_param  *param;
    960 
    961 	vd = (struct vcons_data *)v;
    962 	dp = (struct radeonfb_display *)vd->cookie;
    963 	sc = dp->rd_softc;
    964 
    965 	switch (cmd) {
    966 	case WSDISPLAYIO_GTYPE:
    967 		*(unsigned *)d = WSDISPLAY_TYPE_PCIMISC;
    968 		return 0;
    969 
    970 	case WSDISPLAYIO_GINFO:
    971 		if (vd->active != NULL) {
    972 			struct wsdisplay_fbinfo *fb;
    973 			fb = (struct wsdisplay_fbinfo *)d;
    974 			fb->width = dp->rd_virtx;
    975 			fb->height = dp->rd_virty;
    976 			fb->depth = dp->rd_bpp;
    977 			fb->cmsize = 256;
    978 			return 0;
    979 		} else
    980 			return ENODEV;
    981 	case WSDISPLAYIO_GVIDEO:
    982 		if (radeonfb_isblank(dp))
    983 			*(unsigned *)d = WSDISPLAYIO_VIDEO_OFF;
    984 		else
    985 			*(unsigned *)d = WSDISPLAYIO_VIDEO_ON;
    986 		return 0;
    987 
    988 	case WSDISPLAYIO_SVIDEO:
    989 		radeonfb_blank(dp,
    990 		    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_OFF));
    991 		return 0;
    992 
    993 	case WSDISPLAYIO_GETCMAP:
    994 #if 0
    995 		if (dp->rd_bpp == 8)
    996 			return radeonfb_getcmap(sc,
    997 			    (struct wsdisplay_cmap *)d);
    998 #endif
    999 		return EINVAL;
   1000 
   1001 	case WSDISPLAYIO_PUTCMAP:
   1002 #if 0
   1003 		if (dp->rd_bpp == 8)
   1004 			return radeonfb_putcmap(sc,
   1005 			    (struct wsdisplay_cmap *)d);
   1006 #endif
   1007 		return EINVAL;
   1008 
   1009 	case WSDISPLAYIO_LINEBYTES:
   1010 		*(unsigned *)d = dp->rd_stride;
   1011 		return 0;
   1012 
   1013 	case WSDISPLAYIO_SMODE:
   1014 		if (*(int *)d != dp->rd_wsmode) {
   1015 			dp->rd_wsmode = *(int *)d;
   1016 			if ((dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) &&
   1017 			    (dp->rd_vd.active)) {
   1018 				radeonfb_engine_init(dp);
   1019 				radeonfb_init_palette(sc, dp == &sc->sc_displays[0] ? 0 : 1);
   1020 				radeonfb_modeswitch(dp);
   1021 				vcons_redraw_screen(dp->rd_vd.active);
   1022 			}
   1023 		}
   1024 		return 0;
   1025 
   1026 	case WSDISPLAYIO_GCURMAX:
   1027 		((struct wsdisplay_curpos *)d)->x = RADEON_CURSORMAXX;
   1028 		((struct wsdisplay_curpos *)d)->y = RADEON_CURSORMAXY;
   1029 		return 0;
   1030 
   1031 	case WSDISPLAYIO_SCURSOR:
   1032 		return radeonfb_set_cursor(dp, (struct wsdisplay_cursor *)d);
   1033 
   1034 	case WSDISPLAYIO_GCURSOR:
   1035 		return EPASSTHROUGH;
   1036 
   1037 	case WSDISPLAYIO_GCURPOS:
   1038 		((struct wsdisplay_curpos *)d)->x = dp->rd_cursor.rc_pos.x;
   1039 		((struct wsdisplay_curpos *)d)->y = dp->rd_cursor.rc_pos.y;
   1040 		return 0;
   1041 
   1042 	case WSDISPLAYIO_SCURPOS:
   1043 		return radeonfb_set_curpos(dp, (struct wsdisplay_curpos *)d);
   1044 
   1045 	case WSDISPLAYIO_SSPLASH:
   1046 #if defined(SPLASHSCREEN)
   1047 		if (*(int *)d == 1) {
   1048 			SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
   1049 			splash_render(&dp->rd_splash,
   1050 			    SPLASH_F_CENTER|SPLASH_F_FILL);
   1051 		} else
   1052 			SCREEN_ENABLE_DRAWING(&dp->rd_vscreen);
   1053 		return 0;
   1054 #else
   1055 		return ENODEV;
   1056 #endif
   1057 	case WSDISPLAYIO_GETPARAM:
   1058 		param = (struct wsdisplay_param *)d;
   1059 		if (param->param == WSDISPLAYIO_PARAM_BACKLIGHT) {
   1060 			param->min = 0;
   1061 			param->max = RADEONFB_BACKLIGHT_MAX;
   1062 			param->curval = radeonfb_get_backlight(dp);
   1063 			return 0;
   1064 		}
   1065 		return EPASSTHROUGH;
   1066 
   1067 	case WSDISPLAYIO_SETPARAM:
   1068 		param = (struct wsdisplay_param *)d;
   1069 		if (param->param == WSDISPLAYIO_PARAM_BACKLIGHT) {
   1070 			return radeonfb_set_backlight(dp, param->curval);
   1071 		}
   1072 		return EPASSTHROUGH;
   1073 
   1074 	/* PCI config read/write passthrough. */
   1075 	case PCI_IOC_CFGREAD:
   1076 	case PCI_IOC_CFGWRITE:
   1077 		return pci_devioctl(sc->sc_pc, sc->sc_pt, cmd, d, flag, l);
   1078 
   1079 	case WSDISPLAYIO_GET_BUSID:
   1080 		return wsdisplayio_busid_pci(&sc->sc_dev, sc->sc_pc,
   1081 		    sc->sc_pt, d);
   1082 
   1083 	default:
   1084 		return EPASSTHROUGH;
   1085 	}
   1086 }
   1087 
   1088 paddr_t
   1089 radeonfb_mmap(void *v, void *vs, off_t offset, int prot)
   1090 {
   1091 	struct vcons_data	*vd;
   1092 	struct radeonfb_display	*dp;
   1093 	struct radeonfb_softc	*sc;
   1094 	paddr_t			pa;
   1095 
   1096 	vd = (struct vcons_data *)v;
   1097 	dp = (struct radeonfb_display *)vd->cookie;
   1098 	sc = dp->rd_softc;
   1099 
   1100 	/* XXX: note that we don't allow mapping of registers right now */
   1101 	/* XXX: this means that the XFree86 radeon driver won't work */
   1102 	if ((offset >= 0) && (offset < (dp->rd_virty * dp->rd_stride))) {
   1103 		pa = bus_space_mmap(sc->sc_memt,
   1104 		    sc->sc_memaddr + dp->rd_offset + offset, 0,
   1105 		    prot, BUS_SPACE_MAP_LINEAR);
   1106 		return pa;
   1107 	}
   1108 
   1109 #ifdef RADEONFB_MMAP_BARS
   1110 	/*
   1111 	 * restrict all other mappings to processes with superuser privileges
   1112 	 * or the kernel itself
   1113 	 */
   1114 	if (kauth_authorize_generic(kauth_cred_get(), KAUTH_GENERIC_ISSUSER,
   1115 	    NULL) != 0) {
   1116 		aprint_error_dev(&sc->sc_dev, "mmap() rejected.\n");
   1117 		return -1;
   1118 	}
   1119 
   1120 	if ((offset >= sc->sc_regaddr) &&
   1121 	    (offset < sc->sc_regaddr + sc->sc_regsz)) {
   1122 		return bus_space_mmap(sc->sc_regt, offset, 0, prot,
   1123 		    BUS_SPACE_MAP_LINEAR);
   1124 	}
   1125 
   1126 	if ((offset >= sc->sc_memaddr) &&
   1127 	    (offset < sc->sc_memaddr + sc->sc_memsz)) {
   1128 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1129 		    BUS_SPACE_MAP_LINEAR);
   1130 	}
   1131 
   1132 	if ((offset >= sc->sc_romaddr) &&
   1133 	    (offset < sc->sc_romaddr + sc->sc_romsz)) {
   1134 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1135 		    BUS_SPACE_MAP_LINEAR);
   1136 	}
   1137 
   1138 #ifdef PCI_MAGIC_IO_RANGE
   1139 	/* allow mapping of IO space */
   1140 	if ((offset >= PCI_MAGIC_IO_RANGE) &&
   1141 	    (offset < PCI_MAGIC_IO_RANGE + 0x10000)) {
   1142 		pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE,
   1143 		    0, prot, 0);
   1144 		return pa;
   1145 	}
   1146 #endif /* macppc */
   1147 
   1148 #endif /* RADEONFB_MMAP_BARS */
   1149 
   1150 	return -1;
   1151 }
   1152 
   1153 static void
   1154 radeonfb_loadbios(struct radeonfb_softc *sc, struct pci_attach_args *pa)
   1155 {
   1156 	bus_space_tag_t		romt;
   1157 	bus_space_handle_t	romh, biosh;
   1158 	bus_size_t		romsz;
   1159 	bus_addr_t		ptr;
   1160 
   1161 	if (pci_mapreg_map(pa, PCI_MAPREG_ROM, PCI_MAPREG_TYPE_ROM,
   1162 		BUS_SPACE_MAP_PREFETCHABLE, &romt, &romh, NULL, &romsz) != 0) {
   1163 		aprint_verbose("%s: unable to map BIOS!\n", XNAME(sc));
   1164 		return;
   1165 	}
   1166 
   1167 	pci_find_rom(pa, romt, romh, PCI_ROM_CODE_TYPE_X86, &biosh,
   1168 	    &sc->sc_biossz);
   1169 	if (sc->sc_biossz == 0) {
   1170 		aprint_verbose("%s: Video BIOS not present\n", XNAME(sc));
   1171 		return;
   1172 	}
   1173 
   1174 	sc->sc_bios = malloc(sc->sc_biossz, M_DEVBUF, M_WAITOK);
   1175 	bus_space_read_region_1(romt, biosh, 0, sc->sc_bios, sc->sc_biossz);
   1176 
   1177 	/* unmap the PCI expansion rom */
   1178 	bus_space_unmap(romt, romh, romsz);
   1179 
   1180 	/* turn off rom decoder now */
   1181 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM,
   1182 	    pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM) &
   1183 	    ~PCI_MAPREG_ROM_ENABLE);
   1184 
   1185 	ptr = GETBIOS16(sc, 0x48);
   1186 	if ((GETBIOS32(sc, ptr + 4) == 0x41544f4d /* "ATOM" */) ||
   1187 	    (GETBIOS32(sc, ptr + 4) == 0x4d4f5441 /* "MOTA" */)) {
   1188 		sc->sc_flags |= RFB_ATOM;
   1189 	}
   1190 
   1191 	aprint_verbose("%s: Found %d KB %s BIOS\n", XNAME(sc),
   1192 	    (unsigned)sc->sc_biossz >> 10, IS_ATOM(sc) ? "ATOM" : "Legacy");
   1193 }
   1194 
   1195 
   1196 uint32_t
   1197 radeonfb_get32(struct radeonfb_softc *sc, uint32_t reg)
   1198 {
   1199 
   1200 	return bus_space_read_4(sc->sc_regt, sc->sc_regh, reg);
   1201 }
   1202 
   1203 void
   1204 radeonfb_put32(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1205 {
   1206 
   1207 	bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, val);
   1208 }
   1209 
   1210 void
   1211 radeonfb_mask32(struct radeonfb_softc *sc, uint32_t reg,
   1212     uint32_t andmask, uint32_t ormask)
   1213 {
   1214 	int		s;
   1215 	uint32_t	val;
   1216 
   1217 	s = splhigh();
   1218 	val = radeonfb_get32(sc, reg);
   1219 	val = (val & andmask) | ormask;
   1220 	radeonfb_put32(sc, reg, val);
   1221 	splx(s);
   1222 }
   1223 
   1224 uint32_t
   1225 radeonfb_getindex(struct radeonfb_softc *sc, uint32_t idx)
   1226 {
   1227 	int		s;
   1228 	uint32_t	val;
   1229 
   1230 	s = splhigh();
   1231 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1232 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1233 	splx(s);
   1234 
   1235 	return (val);
   1236 }
   1237 
   1238 void
   1239 radeonfb_putindex(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1240 {
   1241 	int	s;
   1242 
   1243 	s = splhigh();
   1244 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1245 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1246 	splx(s);
   1247 }
   1248 
   1249 void
   1250 radeonfb_maskindex(struct radeonfb_softc *sc, uint32_t idx,
   1251     uint32_t andmask, uint32_t ormask)
   1252 {
   1253 	int		s;
   1254 	uint32_t	val;
   1255 
   1256 	s = splhigh();
   1257 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1258 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1259 	val = (val & andmask) | ormask;
   1260 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1261 	splx(s);
   1262 }
   1263 
   1264 uint32_t
   1265 radeonfb_getpll(struct radeonfb_softc *sc, uint32_t idx)
   1266 {
   1267 	int		s;
   1268 	uint32_t	val;
   1269 
   1270 	s = splhigh();
   1271 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, idx & 0x3f);
   1272 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1273 	if (HAS_R300CG(sc))
   1274 		radeonfb_r300cg_workaround(sc);
   1275 	splx(s);
   1276 
   1277 	return (val);
   1278 }
   1279 
   1280 void
   1281 radeonfb_putpll(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1282 {
   1283 	int	s;
   1284 
   1285 	s = splhigh();
   1286 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1287 	    RADEON_PLL_WR_EN);
   1288 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1289 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1290 	splx(s);
   1291 }
   1292 
   1293 void
   1294 radeonfb_maskpll(struct radeonfb_softc *sc, uint32_t idx,
   1295     uint32_t andmask, uint32_t ormask)
   1296 {
   1297 	int		s;
   1298 	uint32_t	val;
   1299 
   1300 	s = splhigh();
   1301 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1302 		RADEON_PLL_WR_EN);
   1303 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1304 	val = (val & andmask) | ormask;
   1305 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1306 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1307 	splx(s);
   1308 }
   1309 
   1310 int
   1311 radeonfb_scratch_test(struct radeonfb_softc *sc, int reg, uint32_t v)
   1312 {
   1313 	uint32_t	saved;
   1314 
   1315 	saved = GET32(sc, reg);
   1316 	PUT32(sc, reg, v);
   1317 	if (GET32(sc, reg) != v) {
   1318 		return -1;
   1319 	}
   1320 	PUT32(sc, reg, saved);
   1321 	return 0;
   1322 }
   1323 
   1324 uintmax_t
   1325 radeonfb_getprop_num(struct radeonfb_softc *sc, const char *name,
   1326     uintmax_t defval)
   1327 {
   1328 	prop_number_t	pn;
   1329 	pn = prop_dictionary_get(device_properties(&sc->sc_dev), name);
   1330 	if (pn == NULL) {
   1331 		return defval;
   1332 	}
   1333 	KASSERT(prop_object_type(pn) == PROP_TYPE_NUMBER);
   1334 	return (prop_number_integer_value(pn));
   1335 }
   1336 
   1337 int
   1338 radeonfb_getclocks(struct radeonfb_softc *sc)
   1339 {
   1340 	bus_addr_t	ptr;
   1341 	int		refclk = 0;
   1342 	int		refdiv = 0;
   1343 	int		minpll = 0;
   1344 	int		maxpll = 0;
   1345 
   1346 	/* load initial property values if port/board provides them */
   1347 	refclk = radeonfb_getprop_num(sc, "refclk", 0) & 0xffff;
   1348 	refdiv = radeonfb_getprop_num(sc, "refdiv", 0) & 0xffff;
   1349 	minpll = radeonfb_getprop_num(sc, "minpll", 0) & 0xffffffffU;
   1350 	maxpll = radeonfb_getprop_num(sc, "maxpll", 0) & 0xffffffffU;
   1351 
   1352 	if (refclk && refdiv && minpll && maxpll)
   1353 		goto dontprobe;
   1354 
   1355 	if (!sc->sc_biossz) {
   1356 		/* no BIOS */
   1357 		aprint_verbose("%s: No video BIOS, using default clocks\n",
   1358 		    XNAME(sc));
   1359 		if (IS_IGP(sc))
   1360 			refclk = refclk ? refclk : 1432;
   1361 		else
   1362 			refclk = refclk ? refclk : 2700;
   1363 		refdiv = refdiv ? refdiv : 12;
   1364 		minpll = minpll ? minpll : 12500;
   1365 		maxpll = maxpll ? maxpll : 35000;
   1366 	} else if (IS_ATOM(sc)) {
   1367 		/* ATOM BIOS */
   1368 		ptr = GETBIOS16(sc, 0x48);
   1369 		ptr = GETBIOS16(sc, ptr + 32);	/* aka MasterDataStart */
   1370 		ptr = GETBIOS16(sc, ptr + 12);	/* pll info block */
   1371 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 82);
   1372 		minpll = minpll ? minpll : GETBIOS16(sc, ptr + 78);
   1373 		maxpll = maxpll ? maxpll : GETBIOS16(sc, ptr + 32);
   1374 		/*
   1375 		 * ATOM BIOS doesn't supply a reference divider, so we
   1376 		 * have to probe for it.
   1377 		 */
   1378 		if (refdiv < 2)
   1379 			refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1380 			    RADEON_PPLL_REF_DIV_MASK;
   1381 		/*
   1382 		 * if probe is zero, just assume one that should work
   1383 		 * for most parts
   1384 		 */
   1385 		if (refdiv < 2)
   1386 			refdiv = 12;
   1387 
   1388 	} else {
   1389 		/* Legacy BIOS */
   1390 		ptr = GETBIOS16(sc, 0x48);
   1391 		ptr = GETBIOS16(sc, ptr + 0x30);
   1392 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 0x0E);
   1393 		refdiv = refdiv ? refdiv : GETBIOS16(sc, ptr + 0x10);
   1394 		minpll = minpll ? minpll : GETBIOS32(sc, ptr + 0x12);
   1395 		maxpll = maxpll ? maxpll : GETBIOS32(sc, ptr + 0x16);
   1396 	}
   1397 
   1398 
   1399 dontprobe:
   1400 	sc->sc_refclk = refclk * 10;
   1401 	sc->sc_refdiv = refdiv;
   1402 	sc->sc_minpll = minpll * 10;
   1403 	sc->sc_maxpll = maxpll * 10;
   1404 	return 0;
   1405 }
   1406 
   1407 int
   1408 radeonfb_calc_dividers(struct radeonfb_softc *sc, uint32_t dotclock,
   1409     uint32_t *postdivbit, uint32_t *feedbackdiv)
   1410 {
   1411 	int		i;
   1412 	uint32_t	outfreq;
   1413 	int		div;
   1414 
   1415 	DPRINTF(("dot clock: %u\n", dotclock));
   1416 	for (i = 0; (div = radeonfb_dividers[i].divider) != 0; i++) {
   1417 		outfreq = div * dotclock;
   1418 		if ((outfreq >= sc->sc_minpll) &&
   1419 		    (outfreq <= sc->sc_maxpll)) {
   1420 			DPRINTF(("outfreq: %u\n", outfreq));
   1421 			*postdivbit =
   1422 			    ((uint32_t)radeonfb_dividers[i].mask << 16);
   1423 			DPRINTF(("post divider: %d (mask %x)\n", div,
   1424 				    *postdivbit));
   1425 			break;
   1426 		}
   1427 	}
   1428 
   1429 	if (div == 0)
   1430 		return 1;
   1431 
   1432 	*feedbackdiv = DIVIDE(sc->sc_refdiv * outfreq, sc->sc_refclk);
   1433 	DPRINTF(("feedback divider: %d\n", *feedbackdiv));
   1434 	return 0;
   1435 }
   1436 
   1437 #if 0
   1438 #ifdef RADEONFB_DEBUG
   1439 static void
   1440 dump_buffer(const char *pfx, void *buffer, unsigned int size)
   1441 {
   1442 	char		asc[17];
   1443 	unsigned	ptr = (unsigned)buffer;
   1444 	char		*start = (char *)(ptr & ~0xf);
   1445 	char		*end = (char *)(ptr + size);
   1446 
   1447 	end = (char *)(((unsigned)end + 0xf) & ~0xf);
   1448 
   1449 	if (pfx == NULL) {
   1450 		pfx = "";
   1451 	}
   1452 
   1453 	while (start < end) {
   1454 		unsigned offset = (unsigned)start & 0xf;
   1455 		if (offset == 0) {
   1456 			printf("%s%x: ", pfx, (unsigned)start);
   1457 		}
   1458 		if (((unsigned)start < ptr) ||
   1459 		    ((unsigned)start >= (ptr + size))) {
   1460 			printf("  ");
   1461 			asc[offset] = ' ';
   1462 		} else {
   1463 			printf("%02x", *(unsigned char *)start);
   1464 			if ((*start >= ' ') && (*start <= '~')) {
   1465 				asc[offset] = *start;
   1466 			} else {
   1467 				asc[offset] = '.';
   1468 			}
   1469 		}
   1470 		asc[offset + 1] = 0;
   1471 		if (offset % 2) {
   1472 			printf(" ");
   1473 		}
   1474 		if (offset == 15) {
   1475 			printf(" %s\n", asc);
   1476 		}
   1477 		start++;
   1478 	}
   1479 }
   1480 #endif
   1481 #endif
   1482 
   1483 int
   1484 radeonfb_getconnectors(struct radeonfb_softc *sc)
   1485 {
   1486 	int	i;
   1487 	int	found = 0;
   1488 
   1489 	for (i = 0; i < 2; i++) {
   1490 		sc->sc_ports[i].rp_mon_type = RADEON_MT_UNKNOWN;
   1491 		sc->sc_ports[i].rp_ddc_type = RADEON_DDC_NONE;
   1492 		sc->sc_ports[i].rp_dac_type = RADEON_DAC_UNKNOWN;
   1493 		sc->sc_ports[i].rp_conn_type = RADEON_CONN_NONE;
   1494 		sc->sc_ports[i].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1495 	}
   1496 
   1497 	/*
   1498 	 * This logic is borrowed from Xorg's radeon driver.
   1499 	 */
   1500 	if (!sc->sc_biossz)
   1501 		goto nobios;
   1502 
   1503 	if (IS_ATOM(sc)) {
   1504 		/* not done yet */
   1505 	} else {
   1506 		uint16_t	ptr;
   1507 		int		port = 0;
   1508 
   1509 		ptr = GETBIOS16(sc, 0x48);
   1510 		ptr = GETBIOS16(sc, ptr + 0x50);
   1511 		for (i = 1; i < 4; i++) {
   1512 			uint16_t	entry;
   1513 			uint8_t		conn, ddc, dac, tmds;
   1514 
   1515 			/*
   1516 			 * Parse the connector table.  From reading the code,
   1517 			 * it appears to made up of 16-bit entries for each
   1518 			 * connector.  The 16-bits are defined as:
   1519 			 *
   1520 			 * bits 12-15	- connector type (0 == end of table)
   1521 			 * bits 8-11	- DDC type
   1522 			 * bits 5-7	- ???
   1523 			 * bit 4	- TMDS type (1 = EXT, 0 = INT)
   1524 			 * bits 1-3	- ???
   1525 			 * bit 0	- DAC, 1 = TVDAC, 0 = primary
   1526 			 */
   1527 			if (!GETBIOS8(sc, ptr + i * 2) && i > 1)
   1528 				break;
   1529 			entry = GETBIOS16(sc, ptr + i * 2);
   1530 
   1531 			conn = (entry >> 12) & 0xf;
   1532 			ddc = (entry >> 8) & 0xf;
   1533 			dac = (entry & 0x1) ? RADEON_DAC_TVDAC :
   1534 			    RADEON_DAC_PRIMARY;
   1535 			tmds = ((entry >> 4) & 0x1) ? RADEON_TMDS_EXT :
   1536 			    RADEON_TMDS_INT;
   1537 
   1538 			if (conn == RADEON_CONN_NONE)
   1539 				continue;	/* no connector */
   1540 
   1541 			if ((found > 0) &&
   1542 			    (sc->sc_ports[port].rp_ddc_type == ddc)) {
   1543 				/* duplicate entry for same connector */
   1544 				continue;
   1545 			}
   1546 
   1547 			/* internal DDC_DVI port gets priority */
   1548 			if ((ddc == RADEON_DDC_DVI) || (port == 1))
   1549 				port = 0;
   1550 			else
   1551 				port = 1;
   1552 
   1553 			sc->sc_ports[port].rp_ddc_type =
   1554 			    ddc > RADEON_DDC_CRT2 ? RADEON_DDC_NONE : ddc;
   1555 			sc->sc_ports[port].rp_dac_type = dac;
   1556 			sc->sc_ports[port].rp_conn_type =
   1557 			    min(conn, RADEON_CONN_UNSUPPORTED) ;
   1558 
   1559 			sc->sc_ports[port].rp_tmds_type = tmds;
   1560 
   1561 			if ((conn != RADEON_CONN_DVI_I) &&
   1562 			    (conn != RADEON_CONN_DVI_D) &&
   1563 			    (tmds == RADEON_TMDS_INT))
   1564 				sc->sc_ports[port].rp_tmds_type =
   1565 				    RADEON_TMDS_UNKNOWN;
   1566 
   1567 			found += (port + 1);
   1568 		}
   1569 	}
   1570 
   1571 nobios:
   1572 	if (!found) {
   1573 		DPRINTF(("No connector info in BIOS!\n"));
   1574 		/* default, port 0 = internal TMDS, port 1 = CRT */
   1575 		sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1576 		sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1577 		sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1578 		sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1579 		sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1580 
   1581 		sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1582 		sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1583 		sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1584 		sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1585 		sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_EXT;
   1586 	}
   1587 
   1588 	/*
   1589 	 * Fixup for RS300/RS350/RS400 chips, that lack a primary DAC.
   1590 	 * these chips should use TVDAC for the VGA port.
   1591 	 */
   1592 	if (HAS_SDAC(sc)) {
   1593 		if (sc->sc_ports[0].rp_conn_type == RADEON_CONN_CRT) {
   1594 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1595 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1596 		} else {
   1597 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_TVDAC;
   1598 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1599 		}
   1600 	} else if (!HAS_CRTC2(sc)) {
   1601 		sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1602 	}
   1603 
   1604 	for (i = 0; i < 2; i++) {
   1605 		char	edid[128];
   1606 		uint8_t	ddc;
   1607 		struct edid_info *eip = &sc->sc_ports[i].rp_edid;
   1608 		prop_data_t edid_data;
   1609 
   1610 		DPRINTF(("Port #%d:\n", i));
   1611 		DPRINTF(("    conn = %d\n", sc->sc_ports[i].rp_conn_type));
   1612 		DPRINTF(("    ddc = %d\n", sc->sc_ports[i].rp_ddc_type));
   1613 		DPRINTF(("    dac = %d\n", sc->sc_ports[i].rp_dac_type));
   1614 		DPRINTF(("    tmds = %d\n", sc->sc_ports[i].rp_tmds_type));
   1615 
   1616 		sc->sc_ports[i].rp_edid_valid = 0;
   1617 		/* first look for static EDID data */
   1618 		if ((edid_data = prop_dictionary_get(device_properties(
   1619 		    &sc->sc_dev), "EDID")) != NULL) {
   1620 
   1621 			aprint_normal_dev(&sc->sc_dev, "using static EDID\n");
   1622 			memcpy(edid, prop_data_data_nocopy(edid_data), 128);
   1623 			if (edid_parse(edid, eip) == 0) {
   1624 
   1625 				sc->sc_ports[i].rp_edid_valid = 1;
   1626 			}
   1627 		}
   1628 		/* if we didn't find any we'll try to talk to the monitor */
   1629 		if (sc->sc_ports[i].rp_edid_valid != 1) {
   1630 
   1631 			ddc = sc->sc_ports[i].rp_ddc_type;
   1632 			if (ddc != RADEON_DDC_NONE) {
   1633 				if ((radeonfb_i2c_read_edid(sc, ddc, edid)
   1634 				    == 0) && (edid_parse(edid, eip) == 0)) {
   1635 
   1636 					sc->sc_ports[i].rp_edid_valid = 1;
   1637 					edid_print(eip);
   1638 				}
   1639 			}
   1640 		}
   1641 	}
   1642 
   1643 	return found;
   1644 }
   1645 
   1646 int
   1647 radeonfb_gettmds(struct radeonfb_softc *sc)
   1648 {
   1649 	int	i;
   1650 
   1651 	if (!sc->sc_biossz) {
   1652 		goto nobios;
   1653 	}
   1654 
   1655 	if (IS_ATOM(sc)) {
   1656 		/* XXX: not done yet */
   1657 	} else {
   1658 		uint16_t	ptr;
   1659 		int		n;
   1660 
   1661 		ptr = GETBIOS16(sc, 0x48);
   1662 		ptr = GETBIOS16(sc, ptr + 0x34);
   1663 		DPRINTF(("DFP table revision %d\n", GETBIOS8(sc, ptr)));
   1664 		if (GETBIOS8(sc, ptr) == 3) {
   1665 			/* revision three table */
   1666 			n = GETBIOS8(sc, ptr + 5) + 1;
   1667 			n = min(n, 4);
   1668 
   1669 			memset(sc->sc_tmds_pll, 0, sizeof (sc->sc_tmds_pll));
   1670 			for (i = 0; i < n; i++) {
   1671 				sc->sc_tmds_pll[i].rtp_pll = GETBIOS32(sc,
   1672 				    ptr + i * 10 + 8);
   1673 				sc->sc_tmds_pll[i].rtp_freq = GETBIOS16(sc,
   1674 				    ptr + i * 10 + 0x10);
   1675 				DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1676 					    sc->sc_tmds_pll[i].rtp_freq,
   1677 					    sc->sc_tmds_pll[i].rtp_pll));
   1678 			}
   1679 			return 0;
   1680 		}
   1681 	}
   1682 
   1683 nobios:
   1684 	DPRINTF(("no suitable DFP table present\n"));
   1685 	for (i = 0;
   1686 	     i < sizeof (radeonfb_tmds_pll) / sizeof (radeonfb_tmds_pll[0]);
   1687 	     i++) {
   1688 		int	j;
   1689 
   1690 		if (radeonfb_tmds_pll[i].family != sc->sc_family)
   1691 			continue;
   1692 
   1693 		for (j = 0; j < 4; j++) {
   1694 			sc->sc_tmds_pll[j] = radeonfb_tmds_pll[i].plls[j];
   1695 			DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1696 				    sc->sc_tmds_pll[j].rtp_freq,
   1697 				    sc->sc_tmds_pll[j].rtp_pll));
   1698 		}
   1699 		return 0;
   1700 	}
   1701 
   1702 	return -1;
   1703 }
   1704 
   1705 const struct videomode *
   1706 radeonfb_modelookup(const char *name)
   1707 {
   1708 	int	i;
   1709 
   1710 	for (i = 0; i < videomode_count; i++)
   1711 		if (!strcmp(name, videomode_list[i].name))
   1712 			return &videomode_list[i];
   1713 
   1714 	return NULL;
   1715 }
   1716 
   1717 void
   1718 radeonfb_pllwriteupdate(struct radeonfb_softc *sc, int crtc)
   1719 {
   1720 	if (crtc) {
   1721 		while (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   1722 		    RADEON_P2PLL_ATOMIC_UPDATE_R);
   1723 		SETPLL(sc, RADEON_P2PLL_REF_DIV, RADEON_P2PLL_ATOMIC_UPDATE_W);
   1724 	} else {
   1725 		while (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1726 		    RADEON_PPLL_ATOMIC_UPDATE_R);
   1727 		SETPLL(sc, RADEON_PPLL_REF_DIV, RADEON_PPLL_ATOMIC_UPDATE_W);
   1728 	}
   1729 }
   1730 
   1731 void
   1732 radeonfb_pllwaitatomicread(struct radeonfb_softc *sc, int crtc)
   1733 {
   1734 	int	i;
   1735 
   1736 	for (i = 10000; i; i--) {
   1737 		if (crtc) {
   1738 			if (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   1739 			    RADEON_P2PLL_ATOMIC_UPDATE_R)
   1740 				break;
   1741 		} else {
   1742 			if (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1743 			    RADEON_PPLL_ATOMIC_UPDATE_R)
   1744 				break;
   1745 		}
   1746 	}
   1747 }
   1748 
   1749 void
   1750 radeonfb_program_vclk(struct radeonfb_softc *sc, int dotclock, int crtc)
   1751 {
   1752 	uint32_t	pbit = 0;
   1753 	uint32_t	feed = 0;
   1754 	uint32_t	data;
   1755 #if 1
   1756 	int		i;
   1757 #endif
   1758 
   1759 	radeonfb_calc_dividers(sc, dotclock, &pbit, &feed);
   1760 
   1761 	if (crtc == 0) {
   1762 
   1763 		/* XXXX: mobility workaround missing */
   1764 		/* XXXX: R300 stuff missing */
   1765 
   1766 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   1767 		    RADEON_VCLK_SRC_SEL_CPUCLK,
   1768 		    ~RADEON_VCLK_SRC_SEL_MASK);
   1769 
   1770 		/* put vclk into reset, use atomic updates */
   1771 		SETPLL(sc, RADEON_PPLL_CNTL,
   1772 		    RADEON_PPLL_REFCLK_SEL |
   1773 		    RADEON_PPLL_FBCLK_SEL |
   1774 		    RADEON_PPLL_RESET |
   1775 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   1776 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   1777 
   1778 		/* select clock 3 */
   1779 #if 0
   1780 		PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, RADEON_PLL_DIV_SEL,
   1781 		    ~RADEON_PLL_DIV_SEL);
   1782 #else
   1783 		PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   1784 		    ~RADEON_PLL_DIV_SEL);
   1785 #endif
   1786 
   1787 		/* XXX: R300 family -- program divider differently? */
   1788 
   1789 		/* program reference divider */
   1790 		PATCHPLL(sc, RADEON_PPLL_REF_DIV, sc->sc_refdiv,
   1791 		    ~RADEON_PPLL_REF_DIV_MASK);
   1792 		PRINTPLL(RADEON_PPLL_REF_DIV);
   1793 
   1794 #if 0
   1795 		data = GETPLL(sc, RADEON_PPLL_DIV_3);
   1796 		data &= ~(RADEON_PPLL_FB3_DIV_MASK |
   1797 		    RADEON_PPLL_POST3_DIV_MASK);
   1798 		data |= pbit;
   1799 		data |= (feed & RADEON_PPLL_FB3_DIV_MASK);
   1800 		PUTPLL(sc, RADEON_PPLL_DIV_3, data);
   1801 #else
   1802 		for (i = 0; i < 4; i++) {
   1803 		}
   1804 #endif
   1805 
   1806 		/* use the atomic update */
   1807 		radeonfb_pllwriteupdate(sc, crtc);
   1808 
   1809 		/* and wait for it to complete */
   1810 		radeonfb_pllwaitatomicread(sc, crtc);
   1811 
   1812 		/* program HTOTAL (why?) */
   1813 		PUTPLL(sc, RADEON_HTOTAL_CNTL, 0);
   1814 
   1815 		/* drop reset */
   1816 		CLRPLL(sc, RADEON_PPLL_CNTL,
   1817 		    RADEON_PPLL_RESET | RADEON_PPLL_SLEEP |
   1818 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   1819 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   1820 
   1821 		PRINTPLL(RADEON_PPLL_CNTL);
   1822 
   1823 		/* give clock time to lock */
   1824 		delay(50000);
   1825 
   1826 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   1827 		    RADEON_VCLK_SRC_SEL_PPLLCLK,
   1828 		    ~RADEON_VCLK_SRC_SEL_MASK);
   1829 
   1830 	} else {
   1831 
   1832 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   1833 		    RADEON_PIX2CLK_SRC_SEL_CPUCLK,
   1834 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   1835 
   1836 		/* put vclk into reset, use atomic updates */
   1837 		SETPLL(sc, RADEON_P2PLL_CNTL,
   1838 		    RADEON_P2PLL_RESET |
   1839 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   1840 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   1841 
   1842 		/* XXX: R300 family -- program divider differently? */
   1843 
   1844 		/* program reference divider */
   1845 		PATCHPLL(sc, RADEON_P2PLL_REF_DIV, sc->sc_refdiv,
   1846 		    ~RADEON_P2PLL_REF_DIV_MASK);
   1847 
   1848 		/* program feedback and post dividers */
   1849 		data = GETPLL(sc, RADEON_P2PLL_DIV_0);
   1850 		data &= ~(RADEON_P2PLL_FB0_DIV_MASK |
   1851 		    RADEON_P2PLL_POST0_DIV_MASK);
   1852 		data |= pbit;
   1853 		data |= (feed & RADEON_P2PLL_FB0_DIV_MASK);
   1854 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   1855 
   1856 		/* use the atomic update */
   1857 		radeonfb_pllwriteupdate(sc, crtc);
   1858 
   1859 		/* and wait for it to complete */
   1860 		radeonfb_pllwaitatomicread(sc, crtc);
   1861 
   1862 		/* program HTOTAL (why?) */
   1863 		PUTPLL(sc, RADEON_HTOTAL2_CNTL, 0);
   1864 
   1865 		/* drop reset */
   1866 		CLRPLL(sc, RADEON_P2PLL_CNTL,
   1867 		    RADEON_P2PLL_RESET | RADEON_P2PLL_SLEEP |
   1868 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   1869 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   1870 
   1871 		/* allow time for clock to lock */
   1872 		delay(50000);
   1873 
   1874 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   1875 		    RADEON_PIX2CLK_SRC_SEL_P2PLLCLK,
   1876 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   1877 	}
   1878 	PRINTREG(RADEON_CRTC_MORE_CNTL);
   1879 }
   1880 
   1881 void
   1882 radeonfb_modeswitch(struct radeonfb_display *dp)
   1883 {
   1884 	struct radeonfb_softc	*sc = dp->rd_softc;
   1885 	int			i;
   1886 
   1887 	/* blank the display while we switch modes */
   1888 	radeonfb_blank(dp, 1);
   1889 
   1890 #if 0
   1891 	SET32(sc, RADEON_CRTC_EXT_CNTL,
   1892 	    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   1893 	    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   1894 #endif
   1895 
   1896 	/* these registers might get in the way... */
   1897 	PUT32(sc, RADEON_OVR_CLR, 0);
   1898 	PUT32(sc, RADEON_OVR_WID_LEFT_RIGHT, 0);
   1899 	PUT32(sc, RADEON_OVR_WID_TOP_BOTTOM, 0);
   1900 	PUT32(sc, RADEON_OV0_SCALE_CNTL, 0);
   1901 	PUT32(sc, RADEON_SUBPIC_CNTL, 0);
   1902 	PUT32(sc, RADEON_VIPH_CONTROL, 0);
   1903 	PUT32(sc, RADEON_I2C_CNTL_1, 0);
   1904 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   1905 	PUT32(sc, RADEON_CAP0_TRIG_CNTL, 0);
   1906 	PUT32(sc, RADEON_CAP1_TRIG_CNTL, 0);
   1907 	PUT32(sc, RADEON_SURFACE_CNTL, 0);
   1908 
   1909 	for (i = 0; i < dp->rd_ncrtcs; i++)
   1910 		radeonfb_setcrtc(dp, i);
   1911 
   1912 	/* activate the display */
   1913 	radeonfb_blank(dp, 0);
   1914 }
   1915 
   1916 void
   1917 radeonfb_setcrtc(struct radeonfb_display *dp, int index)
   1918 {
   1919 	int			crtc;
   1920 	struct videomode	*mode;
   1921 	struct radeonfb_softc	*sc;
   1922 	struct radeonfb_crtc	*cp;
   1923 	uint32_t		v;
   1924 	uint32_t		gencntl;
   1925 	uint32_t		htotaldisp;
   1926 	uint32_t		hsyncstrt;
   1927 	uint32_t		vtotaldisp;
   1928 	uint32_t		vsyncstrt;
   1929 	uint32_t		fphsyncstrt;
   1930 	uint32_t		fpvsyncstrt;
   1931 	uint32_t		fphtotaldisp;
   1932 	uint32_t		fpvtotaldisp;
   1933 	uint32_t		pitch;
   1934 
   1935 	sc = dp->rd_softc;
   1936 	cp = &dp->rd_crtcs[index];
   1937 	crtc = cp->rc_number;
   1938 	mode = &cp->rc_videomode;
   1939 
   1940 #if 1
   1941 	pitch = (((dp->rd_virtx * dp->rd_bpp) + ((dp->rd_bpp * 8) - 1)) /
   1942 	    (dp->rd_bpp * 8));
   1943 #else
   1944 	pitch = (((sc->sc_maxx * sc->sc_maxbpp) + ((sc->sc_maxbpp * 8) - 1)) /
   1945 	    (sc->sc_maxbpp * 8));
   1946 #endif
   1947 	//pitch = pitch | (pitch << 16);
   1948 
   1949 	switch (crtc) {
   1950 	case 0:
   1951 		gencntl = RADEON_CRTC_GEN_CNTL;
   1952 		htotaldisp = RADEON_CRTC_H_TOTAL_DISP;
   1953 		hsyncstrt = RADEON_CRTC_H_SYNC_STRT_WID;
   1954 		vtotaldisp = RADEON_CRTC_V_TOTAL_DISP;
   1955 		vsyncstrt = RADEON_CRTC_V_SYNC_STRT_WID;
   1956 		fpvsyncstrt = RADEON_FP_V_SYNC_STRT_WID;
   1957 		fphsyncstrt = RADEON_FP_H_SYNC_STRT_WID;
   1958 		fpvtotaldisp = RADEON_FP_CRTC_V_TOTAL_DISP;
   1959 		fphtotaldisp = RADEON_FP_CRTC_H_TOTAL_DISP;
   1960 		break;
   1961 	case 1:
   1962 		gencntl = RADEON_CRTC2_GEN_CNTL;
   1963 		htotaldisp = RADEON_CRTC2_H_TOTAL_DISP;
   1964 		hsyncstrt = RADEON_CRTC2_H_SYNC_STRT_WID;
   1965 		vtotaldisp = RADEON_CRTC2_V_TOTAL_DISP;
   1966 		vsyncstrt = RADEON_CRTC2_V_SYNC_STRT_WID;
   1967 		fpvsyncstrt = RADEON_FP_V2_SYNC_STRT_WID;
   1968 		fphsyncstrt = RADEON_FP_H2_SYNC_STRT_WID;
   1969 		fpvtotaldisp = RADEON_FP_CRTC2_V_TOTAL_DISP;
   1970 		fphtotaldisp = RADEON_FP_CRTC2_H_TOTAL_DISP;
   1971 		break;
   1972 	default:
   1973 		panic("Bad CRTC!");
   1974 		break;
   1975 	}
   1976 
   1977 	/*
   1978 	 * CRTC_GEN_CNTL - depth, accelerator mode, etc.
   1979 	 */
   1980 	/* only bother with 32bpp and 8bpp */
   1981 	v = dp->rd_format << RADEON_CRTC_PIX_WIDTH_SHIFT;
   1982 
   1983 	if (crtc == 1) {
   1984 		v |= RADEON_CRTC2_CRT2_ON | RADEON_CRTC2_EN;
   1985 	} else {
   1986 		v |= RADEON_CRTC_EXT_DISP_EN | RADEON_CRTC_EN;
   1987 	}
   1988 
   1989 	if (mode->flags & VID_DBLSCAN)
   1990 		v |= RADEON_CRTC2_DBL_SCAN_EN;
   1991 
   1992 	if (mode->flags & VID_INTERLACE)
   1993 		v |= RADEON_CRTC2_INTERLACE_EN;
   1994 
   1995 	if (mode->flags & VID_CSYNC) {
   1996 		v |= RADEON_CRTC2_CSYNC_EN;
   1997 		if (crtc == 1)
   1998 			v |= RADEON_CRTC2_VSYNC_TRISTAT;
   1999 	}
   2000 
   2001 	PUT32(sc, gencntl, v);
   2002 	DPRINTF(("CRTC%s_GEN_CNTL = %08x\n", crtc ? "2" : "", v));
   2003 
   2004 	/*
   2005 	 * CRTC_EXT_CNTL - preserve disable flags, set ATI linear and EXT_CNT
   2006 	 */
   2007 	v = GET32(sc, RADEON_CRTC_EXT_CNTL);
   2008 	if (crtc == 0) {
   2009 		v &= (RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2010 		    RADEON_CRTC_DISPLAY_DIS);
   2011 		v |= RADEON_XCRT_CNT_EN | RADEON_VGA_ATI_LINEAR;
   2012 		if (mode->flags & VID_CSYNC)
   2013 			v |= RADEON_CRTC_VSYNC_TRISTAT;
   2014 	}
   2015 	/* unconditional turn on CRT, in case first CRTC is DFP */
   2016 	v |= RADEON_CRTC_CRT_ON;
   2017 	PUT32(sc, RADEON_CRTC_EXT_CNTL, v);
   2018 	PRINTREG(RADEON_CRTC_EXT_CNTL);
   2019 
   2020 	/*
   2021 	 * H_TOTAL_DISP
   2022 	 */
   2023 	v = ((mode->hdisplay / 8) - 1) << 16;
   2024 	v |= (mode->htotal / 8) - 1;
   2025 	PUT32(sc, htotaldisp, v);
   2026 	DPRINTF(("CRTC%s_H_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2027 	PUT32(sc, fphtotaldisp, v);
   2028 	DPRINTF(("FP_H%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2029 
   2030 	/*
   2031 	 * H_SYNC_STRT_WID
   2032 	 */
   2033 	v = (((mode->hsync_end - mode->hsync_start) / 8) << 16);
   2034 	v |= mode->hsync_start;
   2035 	if (mode->flags & VID_NHSYNC)
   2036 		v |= RADEON_CRTC_H_SYNC_POL;
   2037 	PUT32(sc, hsyncstrt, v);
   2038 	DPRINTF(("CRTC%s_H_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2039 	PUT32(sc, fphsyncstrt, v);
   2040 	DPRINTF(("FP_H%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2041 
   2042 	/*
   2043 	 * V_TOTAL_DISP
   2044 	 */
   2045 	v = ((mode->vdisplay - 1) << 16);
   2046 	v |= (mode->vtotal - 1);
   2047 	PUT32(sc, vtotaldisp, v);
   2048 	DPRINTF(("CRTC%s_V_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2049 	PUT32(sc, fpvtotaldisp, v);
   2050 	DPRINTF(("FP_V%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2051 
   2052 	/*
   2053 	 * V_SYNC_STRT_WID
   2054 	 */
   2055 	v = ((mode->vsync_end - mode->vsync_start) << 16);
   2056 	v |= (mode->vsync_start - 1);
   2057 	if (mode->flags & VID_NVSYNC)
   2058 		v |= RADEON_CRTC_V_SYNC_POL;
   2059 	PUT32(sc, vsyncstrt, v);
   2060 	DPRINTF(("CRTC%s_V_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2061 	PUT32(sc, fpvsyncstrt, v);
   2062 	DPRINTF(("FP_V%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2063 
   2064 	radeonfb_program_vclk(sc, mode->dot_clock, crtc);
   2065 
   2066 	switch (crtc) {
   2067 	case 0:
   2068 		PUT32(sc, RADEON_CRTC_OFFSET, 0);
   2069 		PUT32(sc, RADEON_CRTC_OFFSET_CNTL, 0);
   2070 		PUT32(sc, RADEON_CRTC_PITCH, pitch);
   2071 		CLR32(sc, RADEON_DISP_MERGE_CNTL, RADEON_DISP_RGB_OFFSET_EN);
   2072 
   2073 		CLR32(sc, RADEON_CRTC_EXT_CNTL,
   2074 		    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2075 		    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2076 		CLR32(sc, RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B);
   2077 		PRINTREG(RADEON_CRTC_EXT_CNTL);
   2078 		PRINTREG(RADEON_CRTC_GEN_CNTL);
   2079 		PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   2080 		break;
   2081 
   2082 	case 1:
   2083 		PUT32(sc, RADEON_CRTC2_OFFSET, 0);
   2084 		PUT32(sc, RADEON_CRTC2_OFFSET_CNTL, 0);
   2085 		PUT32(sc, RADEON_CRTC2_PITCH, pitch);
   2086 		CLR32(sc, RADEON_DISP2_MERGE_CNTL, RADEON_DISP2_RGB_OFFSET_EN);
   2087 		CLR32(sc, RADEON_CRTC2_GEN_CNTL,
   2088 		    RADEON_CRTC2_VSYNC_DIS |
   2089 		    RADEON_CRTC2_HSYNC_DIS |
   2090 		    RADEON_CRTC2_DISP_DIS | RADEON_CRTC2_DISP_REQ_EN_B);
   2091 		PRINTREG(RADEON_CRTC2_GEN_CNTL);
   2092 		break;
   2093 	}
   2094 }
   2095 
   2096 int
   2097 radeonfb_isblank(struct radeonfb_display *dp)
   2098 {
   2099 	uint32_t	reg, mask;
   2100 
   2101 	if (dp->rd_crtcs[0].rc_number) {
   2102 		reg = RADEON_CRTC2_GEN_CNTL;
   2103 		mask = RADEON_CRTC2_DISP_DIS;
   2104 	} else {
   2105 		reg = RADEON_CRTC_EXT_CNTL;
   2106 		mask = RADEON_CRTC_DISPLAY_DIS;
   2107 	}
   2108 	return ((GET32(dp->rd_softc, reg) & mask) ? 1 : 0);
   2109 }
   2110 
   2111 void
   2112 radeonfb_blank(struct radeonfb_display *dp, int blank)
   2113 {
   2114 	struct radeonfb_softc	*sc = dp->rd_softc;
   2115 	uint32_t		reg, mask;
   2116 	uint32_t		fpreg, fpval;
   2117 	int			i;
   2118 
   2119 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   2120 
   2121 		if (dp->rd_crtcs[i].rc_number) {
   2122 			reg = RADEON_CRTC2_GEN_CNTL;
   2123 			mask = RADEON_CRTC2_DISP_DIS;
   2124 			fpreg = RADEON_FP2_GEN_CNTL;
   2125 			fpval = RADEON_FP2_ON;
   2126 		} else {
   2127 			reg = RADEON_CRTC_EXT_CNTL;
   2128 			mask = RADEON_CRTC_DISPLAY_DIS;
   2129 			fpreg = RADEON_FP_GEN_CNTL;
   2130 			fpval = RADEON_FP_FPON;
   2131 		}
   2132 
   2133 		if (blank) {
   2134 			SET32(sc, reg, mask);
   2135 			CLR32(sc, fpreg, fpval);
   2136 		} else {
   2137 			CLR32(sc, reg, mask);
   2138 			SET32(sc, fpreg, fpval);
   2139 		}
   2140 	}
   2141 	PRINTREG(RADEON_FP_GEN_CNTL);
   2142 	PRINTREG(RADEON_FP2_GEN_CNTL);
   2143 }
   2144 
   2145 void
   2146 radeonfb_init_screen(void *cookie, struct vcons_screen *scr, int existing,
   2147     long *defattr)
   2148 {
   2149 	struct radeonfb_display *dp = cookie;
   2150 	struct rasops_info *ri = &scr->scr_ri;
   2151 
   2152 	/* initialize font subsystem */
   2153 	wsfont_init();
   2154 
   2155 	DPRINTF(("init screen called, existing %d\n", existing));
   2156 
   2157 	ri->ri_depth = dp->rd_bpp;
   2158 	ri->ri_width = dp->rd_virtx;
   2159 	ri->ri_height = dp->rd_virty;
   2160 	ri->ri_stride = dp->rd_stride;
   2161 	ri->ri_flg = RI_CENTER;
   2162 	ri->ri_bits = (void *)dp->rd_fbptr;
   2163 
   2164 	/* XXX: 32 bpp only */
   2165 	/* this is rgb in "big-endian order..." */
   2166 	ri->ri_rnum = 8;
   2167 	ri->ri_gnum = 8;
   2168 	ri->ri_bnum = 8;
   2169 	ri->ri_rpos = 16;
   2170 	ri->ri_gpos = 8;
   2171 	ri->ri_bpos = 0;
   2172 
   2173 	if (existing) {
   2174 		ri->ri_flg |= RI_CLEAR;
   2175 
   2176 		/* start a modeswitch now */
   2177 		radeonfb_modeswitch(dp);
   2178 	}
   2179 
   2180 	/*
   2181 	 * XXX: font selection should be based on properties, with some
   2182 	 * normal/reasonable default.
   2183 	 */
   2184 	ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_REVERSE;
   2185 
   2186 	/* initialize and look for an initial font */
   2187 	rasops_init(ri, dp->rd_virty/8, dp->rd_virtx/8);
   2188 
   2189 	rasops_reconfig(ri, dp->rd_virty / ri->ri_font->fontheight,
   2190 		    dp->rd_virtx / ri->ri_font->fontwidth);
   2191 
   2192 	/* enable acceleration */
   2193 	dp->rd_putchar = ri->ri_ops.putchar;
   2194 	ri->ri_ops.copyrows = radeonfb_copyrows;
   2195 	ri->ri_ops.copycols = radeonfb_copycols;
   2196 	ri->ri_ops.eraserows = radeonfb_eraserows;
   2197 	ri->ri_ops.erasecols = radeonfb_erasecols;
   2198 	ri->ri_ops.allocattr = radeonfb_allocattr;
   2199 	if (!IS_R300(dp->rd_softc)) {
   2200 		ri->ri_ops.putchar = radeonfb_putchar;
   2201 	} else {
   2202 		ri->ri_ops.putchar = radeonfb_putchar_wrapper;
   2203 	}
   2204 	ri->ri_ops.cursor = radeonfb_cursor;
   2205 }
   2206 
   2207 void
   2208 radeonfb_set_fbloc(struct radeonfb_softc *sc)
   2209 {
   2210 	uint32_t	gen, ext, gen2 = 0;
   2211 	uint32_t	agploc, aperbase, apersize, mcfbloc;
   2212 
   2213 	gen = GET32(sc, RADEON_CRTC_GEN_CNTL);
   2214 	ext = GET32(sc, RADEON_CRTC_EXT_CNTL);
   2215 	agploc = GET32(sc, RADEON_MC_AGP_LOCATION);
   2216 	aperbase = GET32(sc, RADEON_CONFIG_APER_0_BASE);
   2217 	apersize = GET32(sc, RADEON_CONFIG_APER_SIZE);
   2218 
   2219 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISP_REQ_EN_B);
   2220 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISPLAY_DIS);
   2221 	//PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISPLAY_DIS);
   2222 	//PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISP_REQ_EN_B);
   2223 
   2224 	if (HAS_CRTC2(sc)) {
   2225 		gen2 = GET32(sc, RADEON_CRTC2_GEN_CNTL);
   2226 		PUT32(sc, RADEON_CRTC2_GEN_CNTL,
   2227 		    gen2 | RADEON_CRTC2_DISP_REQ_EN_B);
   2228 	}
   2229 
   2230 	delay(100000);
   2231 
   2232 	mcfbloc = (aperbase >> 16) |
   2233 	    ((aperbase + (apersize - 1)) & 0xffff0000);
   2234 
   2235 	sc->sc_aperbase = (mcfbloc & 0xffff) << 16;
   2236 	sc->sc_memsz = apersize;
   2237 
   2238 	if (((agploc & 0xffff) << 16) !=
   2239 	    ((mcfbloc & 0xffff0000U) + 0x10000)) {
   2240 		agploc = mcfbloc & 0xffff0000U;
   2241 		agploc |= ((agploc + 0x10000) >> 16);
   2242 	}
   2243 
   2244 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2245 
   2246 	PUT32(sc, RADEON_MC_FB_LOCATION, mcfbloc);
   2247 	PUT32(sc, RADEON_MC_AGP_LOCATION, agploc);
   2248 
   2249 	DPRINTF(("aperbase = %u\n", aperbase));
   2250 	PRINTREG(RADEON_MC_FB_LOCATION);
   2251 	PRINTREG(RADEON_MC_AGP_LOCATION);
   2252 
   2253 	PUT32(sc, RADEON_DISPLAY_BASE_ADDR, sc->sc_aperbase);
   2254 
   2255 	if (HAS_CRTC2(sc))
   2256 		PUT32(sc, RADEON_DISPLAY2_BASE_ADDR, sc->sc_aperbase);
   2257 
   2258 	PUT32(sc, RADEON_OV0_BASE_ADDR, sc->sc_aperbase);
   2259 
   2260 #if 0
   2261 	/* XXX: what is this AGP garbage? :-) */
   2262 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2263 #endif
   2264 
   2265 	delay(100000);
   2266 
   2267 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen);
   2268 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext);
   2269 
   2270 	if (HAS_CRTC2(sc))
   2271 		PUT32(sc, RADEON_CRTC2_GEN_CNTL, gen2);
   2272 }
   2273 
   2274 void
   2275 radeonfb_init_misc(struct radeonfb_softc *sc)
   2276 {
   2277 	PUT32(sc, RADEON_BUS_CNTL,
   2278 	    RADEON_BUS_MASTER_DIS |
   2279 	    RADEON_BUS_PREFETCH_MODE_ACT |
   2280 	    RADEON_BUS_PCI_READ_RETRY_EN |
   2281 	    RADEON_BUS_PCI_WRT_RETRY_EN |
   2282 	    (3 << RADEON_BUS_RETRY_WS_SHIFT) |
   2283 	    RADEON_BUS_MSTR_RD_MULT |
   2284 	    RADEON_BUS_MSTR_RD_LINE |
   2285 	    RADEON_BUS_RD_DISCARD_EN |
   2286 	    RADEON_BUS_MSTR_DISCONNECT_EN |
   2287 	    RADEON_BUS_READ_BURST);
   2288 
   2289 	PUT32(sc, RADEON_BUS_CNTL1, 0xf0);
   2290 	/* PUT32(sc, RADEON_SEPROM_CNTL1, 0x09ff0000); */
   2291 	PUT32(sc, RADEON_FCP_CNTL, RADEON_FCP0_SRC_GND);
   2292 	PUT32(sc, RADEON_RBBM_CNTL,
   2293 	    (3 << RADEON_RB_SETTLE_SHIFT) |
   2294 	    (4 << RADEON_ABORTCLKS_HI_SHIFT) |
   2295 	    (4 << RADEON_ABORTCLKS_CP_SHIFT) |
   2296 	    (4 << RADEON_ABORTCLKS_CFIFO_SHIFT));
   2297 
   2298 	/* XXX: figure out what these mean! */
   2299 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2300 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2301 	//PUT32(sc, RADEON_DISP_MISC_CNTL, 0x5bb00400);
   2302 
   2303 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2304 	PUT32(sc, RADEON_GEN_INT_STATUS, GET32(sc, RADEON_GEN_INT_STATUS));
   2305 }
   2306 
   2307 /*
   2308  * This loads a linear color map for true color.
   2309  */
   2310 void
   2311 radeonfb_init_palette(struct radeonfb_softc *sc, int crtc)
   2312 {
   2313 	int		i;
   2314 	uint32_t	vclk;
   2315 
   2316 #define	DAC_WIDTH ((1 << 10) - 1)
   2317 #define	CLUT_WIDTH ((1 << 8) - 1)
   2318 #define	CLUT_COLOR(i)      ((i * DAC_WIDTH * 2 / CLUT_WIDTH + 1) / 2)
   2319 
   2320 	vclk = GETPLL(sc, RADEON_VCLK_ECP_CNTL);
   2321 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk & ~RADEON_PIXCLK_DAC_ALWAYS_ONb);
   2322 
   2323 	if (crtc)
   2324 		SET32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2325 	else
   2326 		CLR32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2327 
   2328 	PUT32(sc, RADEON_PALETTE_INDEX, 0);
   2329 	if (sc->sc_displays[crtc].rd_bpp == 0)
   2330 		sc->sc_displays[crtc].rd_bpp = RADEONFB_DEFAULT_DEPTH;
   2331 
   2332 	if (sc->sc_displays[crtc].rd_bpp == 8) {
   2333 		/* ANSI palette */
   2334 		int j = 0;
   2335 
   2336                 for (i = 0; i <= CLUT_WIDTH; ++i) {
   2337                 	PUT32(sc, RADEON_PALETTE_30_DATA,
   2338 				(rasops_cmap[j] << 22) |
   2339 				(rasops_cmap[j + 1] << 12) |
   2340 				(rasops_cmap[j + 2] << 2));
   2341 			j += 3;
   2342 		}
   2343 	} else {
   2344 		/* linear ramp */
   2345 		for (i = 0; i <= CLUT_WIDTH; ++i) {
   2346 			PUT32(sc, RADEON_PALETTE_30_DATA,
   2347 			    (CLUT_COLOR(i) << 10) |
   2348 			    (CLUT_COLOR(i) << 20) |
   2349 			    (CLUT_COLOR(i)));
   2350 		}
   2351 	}
   2352 
   2353 	CLR32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2354 	PRINTREG(RADEON_DAC_CNTL2);
   2355 
   2356 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk);
   2357 }
   2358 
   2359 /*
   2360  * Bugs in some R300 hardware requires this when accessing CLOCK_CNTL_INDEX.
   2361  */
   2362 void
   2363 radeonfb_r300cg_workaround(struct radeonfb_softc *sc)
   2364 {
   2365 	uint32_t	tmp, save;
   2366 
   2367 	save = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   2368 	tmp = save & ~(0x3f | RADEON_PLL_WR_EN);
   2369 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, tmp);
   2370 	tmp = GET32(sc, RADEON_CLOCK_CNTL_DATA);
   2371 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, save);
   2372 }
   2373 
   2374 /*
   2375  * Acceleration entry points.
   2376  */
   2377 static void
   2378 radeonfb_putchar(void *cookie, int row, int col, u_int c, long attr)
   2379 {
   2380 	struct rasops_info	*ri = cookie;
   2381 	struct vcons_screen	*scr = ri->ri_hw;
   2382 	struct radeonfb_display	*dp = scr->scr_cookie;
   2383 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2384 	uint32_t		x, y, w, h;
   2385 	uint32_t		bg, fg, flg;
   2386 	uint8_t			*data;
   2387 
   2388 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2389 		return;
   2390 
   2391 	if (!CHAR_IN_FONT(c, font))
   2392 		return;
   2393 
   2394 	w = font->fontwidth;
   2395 	h = font->fontheight;
   2396 
   2397 	flg = attr & 0xff;
   2398 	if (flg & WSATTR_REVERSE) {
   2399 		fg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2400 		bg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2401 	} else {
   2402 		bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2403 		fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2404 	}
   2405 
   2406 	x = ri->ri_xorigin + col * w;
   2407 	y = ri->ri_yorigin + row * h;
   2408 
   2409 	if (c == 0x20) {
   2410 		radeonfb_rectfill(dp, x, y, w, h, bg);
   2411 	} else {
   2412 		data = (uint8_t *)font->data +
   2413 		    (c - font->firstchar) * ri->ri_fontscale;
   2414 
   2415 		radeonfb_setup_mono(dp, x, y, w, h, fg, bg);
   2416 		radeonfb_feed_bytes(dp, ri->ri_fontscale, data);
   2417 	}
   2418 }
   2419 
   2420 /*
   2421  * wrapper for software character drawing
   2422  * just sync the engine and call rasops*_putchar()
   2423  */
   2424 
   2425 static void
   2426 radeonfb_putchar_wrapper(void *cookie, int row, int col, u_int c, long attr)
   2427 {
   2428 	struct rasops_info	*ri = cookie;
   2429 	struct vcons_screen	*scr = ri->ri_hw;
   2430 	struct radeonfb_display	*dp = scr->scr_cookie;
   2431 
   2432 	radeonfb_engine_idle(dp->rd_softc);
   2433 	dp->rd_putchar(ri, row, col, c, attr);
   2434 }
   2435 
   2436 static void
   2437 radeonfb_eraserows(void *cookie, int row, int nrows, long fillattr)
   2438 {
   2439 	struct rasops_info	*ri = cookie;
   2440 	struct vcons_screen	*scr = ri->ri_hw;
   2441 	struct radeonfb_display	*dp = scr->scr_cookie;
   2442 	uint32_t		x, y, w, h, fg, bg, ul;
   2443 
   2444 	/* XXX: check for full emulation mode? */
   2445 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2446 		x = ri->ri_xorigin;
   2447 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   2448 		w = ri->ri_emuwidth;
   2449 		h = ri->ri_font->fontheight * nrows;
   2450 
   2451 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   2452 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   2453 	}
   2454 }
   2455 
   2456 static void
   2457 radeonfb_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
   2458 {
   2459 	struct rasops_info	*ri = cookie;
   2460 	struct vcons_screen	*scr = ri->ri_hw;
   2461 	struct radeonfb_display	*dp = scr->scr_cookie;
   2462 	uint32_t		x, ys, yd, w, h;
   2463 
   2464 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2465 		x = ri->ri_xorigin;
   2466 		ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow;
   2467 		yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow;
   2468 		w = ri->ri_emuwidth;
   2469 		h = ri->ri_font->fontheight * nrows;
   2470 		radeonfb_bitblt(dp, x, ys, x, yd, w, h,
   2471 		    RADEON_ROP3_S, 0xffffffff);
   2472 	}
   2473 }
   2474 
   2475 static void
   2476 radeonfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
   2477 {
   2478 	struct rasops_info	*ri = cookie;
   2479 	struct vcons_screen	*scr = ri->ri_hw;
   2480 	struct radeonfb_display	*dp = scr->scr_cookie;
   2481 	uint32_t		xs, xd, y, w, h;
   2482 
   2483 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2484 		xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol;
   2485 		xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol;
   2486 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   2487 		w = ri->ri_font->fontwidth * ncols;
   2488 		h = ri->ri_font->fontheight;
   2489 		radeonfb_bitblt(dp, xs, y, xd, y, w, h,
   2490 		    RADEON_ROP3_S, 0xffffffff);
   2491 	}
   2492 }
   2493 
   2494 static void
   2495 radeonfb_erasecols(void *cookie, int row, int startcol, int ncols,
   2496     long fillattr)
   2497 {
   2498 	struct rasops_info	*ri = cookie;
   2499 	struct vcons_screen	*scr = ri->ri_hw;
   2500 	struct radeonfb_display	*dp = scr->scr_cookie;
   2501 	uint32_t		x, y, w, h, fg, bg, ul;
   2502 
   2503 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2504 		x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol;
   2505 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   2506 		w = ri->ri_font->fontwidth * ncols;
   2507 		h = ri->ri_font->fontheight;
   2508 
   2509 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   2510 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   2511 	}
   2512 }
   2513 
   2514 static void
   2515 radeonfb_cursor(void *cookie, int on, int row, int col)
   2516 {
   2517 	struct rasops_info *ri = cookie;
   2518 	struct vcons_screen *scr = ri->ri_hw;
   2519 	struct radeonfb_display	*dp = scr->scr_cookie;
   2520 	int x, y, wi, he;
   2521 
   2522 	wi = ri->ri_font->fontwidth;
   2523 	he = ri->ri_font->fontheight;
   2524 
   2525 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2526 		x = ri->ri_ccol * wi + ri->ri_xorigin;
   2527 		y = ri->ri_crow * he + ri->ri_yorigin;
   2528 		/* first turn off the old cursor */
   2529 		if (ri->ri_flg & RI_CURSOR) {
   2530 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   2531 			    RADEON_ROP3_Dn, 0xffffffff);
   2532 			ri->ri_flg &= ~RI_CURSOR;
   2533 		}
   2534 		ri->ri_crow = row;
   2535 		ri->ri_ccol = col;
   2536 		/* then (possibly) turn on the new one */
   2537 		if (on) {
   2538 			x = ri->ri_ccol * wi + ri->ri_xorigin;
   2539 			y = ri->ri_crow * he + ri->ri_yorigin;
   2540 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   2541 			    RADEON_ROP3_Dn, 0xffffffff);
   2542 			ri->ri_flg |= RI_CURSOR;
   2543 		}
   2544 	} else {
   2545 		scr->scr_ri.ri_crow = row;
   2546 		scr->scr_ri.ri_ccol = col;
   2547 		scr->scr_ri.ri_flg &= ~RI_CURSOR;
   2548 	}
   2549 }
   2550 
   2551 static int
   2552 radeonfb_allocattr(void *cookie, int fg, int bg, int flags, long *attrp)
   2553 {
   2554 	if ((fg == 0) && (bg == 0)) {
   2555 		fg = WS_DEFAULT_FG;
   2556 		bg = WS_DEFAULT_BG;
   2557 	}
   2558 	*attrp = ((fg & 0xf) << 24) | ((bg & 0xf) << 16) | (flags & 0xff) << 8;
   2559 	return 0;
   2560 }
   2561 
   2562 /*
   2563  * Underlying acceleration support.
   2564  */
   2565 static void
   2566 radeonfb_setup_mono(struct radeonfb_display *dp, int xd, int yd, int width,
   2567     int height, uint32_t fg, uint32_t bg)
   2568 {
   2569 	struct radeonfb_softc	*sc = dp->rd_softc;
   2570 	uint32_t		gmc;
   2571 	uint32_t 		padded_width = (width+7) & 0xfff8;
   2572 	uint32_t		topleft, bottomright;
   2573 
   2574 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2575 
   2576 	if (width != padded_width) {
   2577 
   2578 		radeonfb_wait_fifo(sc, 2);
   2579 		topleft = ((yd << 16) & 0x1fff0000) | (xd & 0x1fff);
   2580 		bottomright = (((yd + height) << 16) & 0x1fff0000) |
   2581 		    ((xd + width) & 0x1fff);
   2582 		PUT32(sc, RADEON_SC_TOP_LEFT, topleft);
   2583 		PUT32(sc, RADEON_SC_BOTTOM_RIGHT, bottomright);
   2584 	}
   2585 
   2586 	radeonfb_wait_fifo(sc, 5);
   2587 
   2588 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2589 	    RADEON_GMC_BRUSH_NONE |
   2590 	    RADEON_GMC_SRC_DATATYPE_MONO_FG_BG |
   2591 	    //RADEON_GMC_BYTE_LSB_TO_MSB |
   2592 	    RADEON_GMC_DST_CLIPPING |
   2593 	    RADEON_ROP3_S |
   2594 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2595 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2596 	    RADEON_GMC_WR_MSK_DIS |
   2597 	    gmc);
   2598 
   2599 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, fg);
   2600 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, bg);
   2601 
   2602 	PUT32(sc, RADEON_DST_X_Y, (xd << 16) | yd);
   2603 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (padded_width << 16) | height);
   2604 
   2605 }
   2606 
   2607 static void
   2608 radeonfb_feed_bytes(struct radeonfb_display *dp, int count, uint8_t *data)
   2609 {
   2610 	struct radeonfb_softc	*sc = dp->rd_softc;
   2611 	int i;
   2612 	uint32_t latch = 0;
   2613 	int shift = 0;
   2614 
   2615 	for (i = 0; i < count; i++) {
   2616 		latch |= (data[i] << shift);
   2617 		if (shift == 24) {
   2618 			radeonfb_wait_fifo(sc, 1);
   2619 			PUT32(sc, RADEON_HOST_DATA0, latch);
   2620 			latch = 0;
   2621 			shift = 0;
   2622 		} else
   2623 			shift += 8;
   2624 	}
   2625 	if (shift != 0) {
   2626 		radeonfb_wait_fifo(sc, 1);
   2627 		PUT32(sc, RADEON_HOST_DATA0, latch);
   2628 	}
   2629 	radeonfb_unclip(sc);
   2630 }
   2631 
   2632 static void
   2633 radeonfb_rectfill(struct radeonfb_display *dp, int dstx, int dsty,
   2634     int width, int height, uint32_t color)
   2635 {
   2636 	struct radeonfb_softc	*sc = dp->rd_softc;
   2637 	uint32_t		gmc;
   2638 
   2639 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2640 
   2641 	radeonfb_wait_fifo(sc, 6);
   2642 
   2643 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2644 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   2645 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2646 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2647 	    RADEON_ROP3_P | gmc);
   2648 
   2649 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, color);
   2650 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   2651 	PUT32(sc, RADEON_DP_CNTL,
   2652 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2653 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2654 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   2655 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   2656 
   2657 	/*
   2658 	 * XXX: we don't wait for the fifo to empty -- that would slow
   2659 	 * things down!  The linux radeonfb driver waits, but xfree doesn't
   2660 	 */
   2661 	/* XXX: for now we do, to make it safe for direct drawing */
   2662 	radeonfb_engine_idle(sc);
   2663 }
   2664 
   2665 static void
   2666 radeonfb_bitblt(struct radeonfb_display *dp, int srcx, int srcy,
   2667     int dstx, int dsty, int width, int height, int rop, uint32_t mask)
   2668 {
   2669 	struct radeonfb_softc	*sc = dp->rd_softc;
   2670 	uint32_t		gmc;
   2671 	uint32_t		dir;
   2672 
   2673 	if (dsty < srcy) {
   2674 		dir = RADEON_DST_Y_TOP_TO_BOTTOM;
   2675 	} else {
   2676 		srcy += height - 1;
   2677 		dsty += height - 1;
   2678 		dir = 0;
   2679 	}
   2680 	if (dstx < srcx) {
   2681 		dir |= RADEON_DST_X_LEFT_TO_RIGHT;
   2682 	} else {
   2683 		srcx += width - 1;
   2684 		dstx += width - 1;
   2685 	}
   2686 
   2687 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2688 
   2689 	radeonfb_wait_fifo(sc, 6);
   2690 
   2691 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2692 	    //RADEON_GMC_SRC_CLIPPING |
   2693 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   2694 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2695 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2696 	    RADEON_DP_SRC_SOURCE_MEMORY |
   2697 	    rop | gmc);
   2698 
   2699 	PUT32(sc, RADEON_DP_WRITE_MASK, mask);
   2700 	PUT32(sc, RADEON_DP_CNTL, dir);
   2701 	PUT32(sc, RADEON_SRC_Y_X, (srcy << 16) | srcx);
   2702 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   2703 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   2704 
   2705 	/*
   2706 	 * XXX: we don't wait for the fifo to empty -- that would slow
   2707 	 * things down!  The linux radeonfb driver waits, but xfree doesn't
   2708 	 */
   2709 	/* XXX: for now we do, to make it safe for direct drawing */
   2710 	radeonfb_engine_idle(sc);
   2711 }
   2712 
   2713 static void
   2714 radeonfb_engine_idle(struct radeonfb_softc *sc)
   2715 {
   2716 	int	i;
   2717 
   2718 	radeonfb_wait_fifo(sc, 64);
   2719 	for (i = RADEON_TIMEOUT; i; i--) {
   2720 		if ((GET32(sc, RADEON_RBBM_STATUS) &
   2721 			RADEON_RBBM_ACTIVE) == 0) {
   2722 			radeonfb_engine_flush(sc);
   2723 			break;
   2724 		}
   2725 	}
   2726 }
   2727 
   2728 static void
   2729 radeonfb_wait_fifo(struct radeonfb_softc *sc, int n)
   2730 {
   2731 	int	i;
   2732 
   2733 	for (i = RADEON_TIMEOUT; i; i--) {
   2734 		if ((GET32(sc, RADEON_RBBM_STATUS) &
   2735 			RADEON_RBBM_FIFOCNT_MASK) >= n)
   2736 			return;
   2737 	}
   2738 #ifdef	DIAGNOSTIC
   2739 	if (!i)
   2740 		printf("%s: timed out waiting for fifo (%x)\n",
   2741 		    XNAME(sc), GET32(sc, RADEON_RBBM_STATUS));
   2742 #endif
   2743 }
   2744 
   2745 static void
   2746 radeonfb_engine_flush(struct radeonfb_softc *sc)
   2747 {
   2748 	int	i;
   2749 	SET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT, RADEON_RB2D_DC_FLUSH_ALL);
   2750 	for  (i = RADEON_TIMEOUT; i; i--) {
   2751 		if ((GET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT) &
   2752 			RADEON_RB2D_DC_BUSY) == 0)
   2753 			break;
   2754 	}
   2755 #ifdef DIAGNOSTIC
   2756 	if (!i)
   2757 		printf("%s: engine flush timed out!\n", XNAME(sc));
   2758 #endif
   2759 }
   2760 
   2761 static inline void
   2762 radeonfb_unclip(struct radeonfb_softc *sc)
   2763 {
   2764 
   2765 	radeonfb_wait_fifo(sc, 2);
   2766 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   2767 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   2768 }
   2769 
   2770 static void
   2771 radeonfb_engine_init(struct radeonfb_display *dp)
   2772 {
   2773 	struct radeonfb_softc	*sc = dp->rd_softc;
   2774 	uint32_t		pitch;
   2775 	volatile uint32_t	junk;
   2776 
   2777 	/* no 3D */
   2778 	PUT32(sc, RADEON_RB3D_CNTL, 0);
   2779 
   2780 	radeonfb_engine_reset(sc);
   2781 	pitch = ((dp->rd_virtx * (dp->rd_bpp / 8) + 0x3f)) >> 6;
   2782 	//pitch = ((sc->sc_maxx * (sc->sc_maxbpp / 8) + 0x3f)) >> 6;
   2783 
   2784 	radeonfb_wait_fifo(sc, 1);
   2785 	if (!IS_R300(sc))
   2786 		PUT32(sc, RADEON_RB2D_DSTCACHE_MODE, 0);
   2787 
   2788 	radeonfb_wait_fifo(sc, 3);
   2789 	PUT32(sc, RADEON_DEFAULT_PITCH_OFFSET,
   2790 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   2791 
   2792 
   2793 	PUT32(sc, RADEON_DST_PITCH_OFFSET,
   2794 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   2795 	PUT32(sc, RADEON_SRC_PITCH_OFFSET,
   2796 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   2797 
   2798 	radeonfb_wait_fifo(sc, 1);
   2799 #if _BYTE_ORDER == _BIG_ENDIAN
   2800 	SET32(sc, RADEON_DP_DATATYPE, RADEON_HOST_BIG_ENDIAN_EN);
   2801 #else
   2802 	CLR32(sc, RADEON_DP_DATATYPE, RADEON_HOST_BIG_ENDIAN_EN);
   2803 #endif
   2804 	junk = GET32(sc, RADEON_DP_DATATYPE);
   2805 
   2806 	/* default scissors -- no clipping */
   2807 	radeonfb_wait_fifo(sc, 1);
   2808 	PUT32(sc, RADEON_DEFAULT_SC_BOTTOM_RIGHT,
   2809 	    RADEON_DEFAULT_SC_RIGHT_MAX | RADEON_DEFAULT_SC_BOTTOM_MAX);
   2810 
   2811 	radeonfb_wait_fifo(sc, 1);
   2812 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2813 	    (dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT) |
   2814 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2815 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   2816 	    RADEON_GMC_SRC_DATATYPE_COLOR);
   2817 
   2818 	radeonfb_wait_fifo(sc, 7);
   2819 	PUT32(sc, RADEON_DST_LINE_START, 0);
   2820 	PUT32(sc, RADEON_DST_LINE_END, 0);
   2821 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, 0xffffffff);
   2822 	PUT32(sc, RADEON_DP_BRUSH_BKGD_CLR, 0);
   2823 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, 0xffffffff);
   2824 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, 0);
   2825 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   2826 
   2827 	radeonfb_engine_idle(sc);
   2828 }
   2829 
   2830 static void
   2831 radeonfb_engine_reset(struct radeonfb_softc *sc)
   2832 {
   2833 	uint32_t	hpc, rbbm, mclkcntl, clkindex;
   2834 
   2835 	radeonfb_engine_flush(sc);
   2836 
   2837 	clkindex = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   2838 	if (HAS_R300CG(sc))
   2839 		radeonfb_r300cg_workaround(sc);
   2840 	mclkcntl = GETPLL(sc, RADEON_MCLK_CNTL);
   2841 
   2842 	/*
   2843 	 * According to comments in XFree code, resetting the HDP via
   2844 	 * the RBBM_SOFT_RESET can cause bad behavior on some systems.
   2845 	 * So we use HOST_PATH_CNTL instead.
   2846 	 */
   2847 
   2848 	hpc = GET32(sc, RADEON_HOST_PATH_CNTL);
   2849 	rbbm = GET32(sc, RADEON_RBBM_SOFT_RESET);
   2850 	if (IS_R300(sc)) {
   2851 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   2852 		    RADEON_SOFT_RESET_CP |
   2853 		    RADEON_SOFT_RESET_HI |
   2854 		    RADEON_SOFT_RESET_E2);
   2855 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   2856 		PUT32(sc, RADEON_RBBM_SOFT_RESET, 0);
   2857 		/*
   2858 		 * XXX: this bit is not defined in any ATI docs I have,
   2859 		 * nor in the XFree code, but XFree does it.  Why?
   2860 		 */
   2861 		SET32(sc, RADEON_RB2D_DSTCACHE_MODE, (1<<17));
   2862 	} else {
   2863 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   2864 		    RADEON_SOFT_RESET_CP |
   2865 		    RADEON_SOFT_RESET_SE |
   2866 		    RADEON_SOFT_RESET_RE |
   2867 		    RADEON_SOFT_RESET_PP |
   2868 		    RADEON_SOFT_RESET_E2 |
   2869 		    RADEON_SOFT_RESET_RB);
   2870 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   2871 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm &
   2872 		    ~(RADEON_SOFT_RESET_CP |
   2873 			RADEON_SOFT_RESET_SE |
   2874 			RADEON_SOFT_RESET_RE |
   2875 			RADEON_SOFT_RESET_PP |
   2876 			RADEON_SOFT_RESET_E2 |
   2877 			RADEON_SOFT_RESET_RB));
   2878 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   2879 	}
   2880 
   2881 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc | RADEON_HDP_SOFT_RESET);
   2882 	GET32(sc, RADEON_HOST_PATH_CNTL);
   2883 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc);
   2884 
   2885 	if (IS_R300(sc))
   2886 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm);
   2887 
   2888 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, clkindex);
   2889 	PUTPLL(sc, RADEON_MCLK_CNTL, mclkcntl);
   2890 
   2891 	if (HAS_R300CG(sc))
   2892 		radeonfb_r300cg_workaround(sc);
   2893 }
   2894 
   2895 static int
   2896 radeonfb_set_curpos(struct radeonfb_display *dp, struct wsdisplay_curpos *pos)
   2897 {
   2898 	int		x, y;
   2899 
   2900 	x = pos->x;
   2901 	y = pos->y;
   2902 
   2903 	/*
   2904 	 * This doesn't let a cursor move off the screen.  I'm not
   2905 	 * sure if this will have negative effects for e.g. Xinerama.
   2906 	 * I'd guess Xinerama handles it by changing the cursor shape,
   2907 	 * but that needs verification.
   2908 	 */
   2909 	if (x >= dp->rd_virtx)
   2910 		x = dp->rd_virtx - 1;
   2911 	if (x < 0)
   2912 		x = 0;
   2913 	if (y >= dp->rd_virty)
   2914 		y = dp->rd_virty - 1;
   2915 	if (y < 0)
   2916 		y = 0;
   2917 
   2918 	dp->rd_cursor.rc_pos.x = x;
   2919 	dp->rd_cursor.rc_pos.y = y;
   2920 
   2921 	radeonfb_cursor_position(dp);
   2922 	return 0;
   2923 }
   2924 
   2925 static int
   2926 radeonfb_set_cursor(struct radeonfb_display *dp, struct wsdisplay_cursor *wc)
   2927 {
   2928 	unsigned	flags;
   2929 
   2930 	uint8_t		r[2], g[2], b[2];
   2931 	unsigned	index, count;
   2932 	int		i, err;
   2933 	int		pitch, size;
   2934 	struct radeonfb_cursor	nc;
   2935 
   2936 	flags = wc->which;
   2937 
   2938 	/* copy old values */
   2939 	nc = dp->rd_cursor;
   2940 
   2941 	if (flags & WSDISPLAY_CURSOR_DOCMAP) {
   2942 		index = wc->cmap.index;
   2943 		count = wc->cmap.count;
   2944 
   2945 		if (index >= 2 || (index + count) > 2)
   2946 			return EINVAL;
   2947 
   2948 		err = copyin(wc->cmap.red, &r[index], count);
   2949 		if (err)
   2950 			return err;
   2951 		err = copyin(wc->cmap.green, &g[index], count);
   2952 		if (err)
   2953 			return err;
   2954 		err = copyin(wc->cmap.blue, &b[index], count);
   2955 		if (err)
   2956 			return err;
   2957 
   2958 		for (i = index; i < index + count; i++) {
   2959 			nc.rc_cmap[i] =
   2960 			    (r[i] << 16) + (g[i] << 8) + (b[i] << 0);
   2961 		}
   2962 	}
   2963 
   2964 	if (flags & WSDISPLAY_CURSOR_DOSHAPE) {
   2965 		if ((wc->size.x > RADEON_CURSORMAXX) ||
   2966 		    (wc->size.y > RADEON_CURSORMAXY))
   2967 			return EINVAL;
   2968 
   2969 		/* figure bytes per line */
   2970 		pitch = (wc->size.x + 7) / 8;
   2971 		size = pitch * wc->size.y;
   2972 
   2973 		/* clear the old cursor and mask */
   2974 		memset(nc.rc_image, 0, 512);
   2975 		memset(nc.rc_mask, 0, 512);
   2976 
   2977 		nc.rc_size = wc->size;
   2978 
   2979 		if ((err = copyin(wc->image, nc.rc_image, size)) != 0)
   2980 			return err;
   2981 
   2982 		if ((err = copyin(wc->mask, nc.rc_mask, size)) != 0)
   2983 			return err;
   2984 	}
   2985 
   2986 	if (flags & WSDISPLAY_CURSOR_DOHOT) {
   2987 		nc.rc_hot = wc->hot;
   2988 		if (nc.rc_hot.x >= nc.rc_size.x)
   2989 			nc.rc_hot.x = nc.rc_size.x - 1;
   2990 		if (nc.rc_hot.y >= nc.rc_size.y)
   2991 			nc.rc_hot.y = nc.rc_size.y - 1;
   2992 	}
   2993 
   2994 	if (flags & WSDISPLAY_CURSOR_DOPOS) {
   2995 		nc.rc_pos = wc->pos;
   2996 		if (nc.rc_pos.x >= dp->rd_virtx)
   2997 			nc.rc_pos.x = dp->rd_virtx - 1;
   2998 #if 0
   2999 		if (nc.rc_pos.x < 0)
   3000 			nc.rc_pos.x = 0;
   3001 #endif
   3002 		if (nc.rc_pos.y >= dp->rd_virty)
   3003 			nc.rc_pos.y = dp->rd_virty - 1;
   3004 #if 0
   3005 		if (nc.rc_pos.y < 0)
   3006 			nc.rc_pos.y = 0;
   3007 #endif
   3008 	}
   3009 	if (flags & WSDISPLAY_CURSOR_DOCUR) {
   3010 		nc.rc_visible = wc->enable;
   3011 	}
   3012 
   3013 	dp->rd_cursor = nc;
   3014 	radeonfb_cursor_update(dp, wc->which);
   3015 
   3016 	return 0;
   3017 }
   3018 
   3019 /*
   3020  * Change the cursor shape.  Call this with the cursor locked to avoid
   3021  * flickering/tearing.
   3022  */
   3023 static void
   3024 radeonfb_cursor_shape(struct radeonfb_display *dp)
   3025 {
   3026 	uint8_t	and[512], xor[512];
   3027 	int	i, j, src, dst, pitch;
   3028 	const uint8_t	*msk = dp->rd_cursor.rc_mask;
   3029 	const uint8_t	*img = dp->rd_cursor.rc_image;
   3030 
   3031 	/*
   3032 	 * Radeon cursor data interleaves one line of AND data followed
   3033 	 * by a line of XOR data.  (Each line corresponds to a whole hardware
   3034 	 * pitch - i.e. 64 pixels or 8 bytes.)
   3035 	 *
   3036 	 * The cursor is displayed using the following table:
   3037 	 *
   3038 	 * AND	XOR	Result
   3039 	 * ----------------------
   3040 	 *  0    0	Cursor color 0
   3041 	 *  0	 1	Cursor color 1
   3042 	 *  1	 0	Transparent
   3043 	 *  1	 1	Complement of background
   3044 	 *
   3045 	 * Our masks are therefore different from what we were passed.
   3046 	 * Passed in, I'm assuming the data represents either color 0 or 1,
   3047 	 * and a mask, so the passed in table looks like:
   3048 	 *
   3049 	 * IMG	Mask	Result
   3050 	 * -----------------------
   3051 	 *  0	 0	Transparent
   3052 	 *  0	 1	Cursor color 0
   3053 	 *  1	 0	Transparent
   3054 	 *  1	 1	Cursor color 1
   3055 	 *
   3056 	 * IF mask bit == 1, AND = 0, XOR = color.
   3057 	 * IF mask bit == 0, AND = 1, XOR = 0.
   3058 	 *
   3059 	 * hence:	AND = ~(mask);	XOR = color & ~(mask);
   3060 	 */
   3061 
   3062 	pitch = ((dp->rd_cursor.rc_size.x + 7) / 8);
   3063 
   3064 	/* start by assuming all bits are transparent */
   3065 	memset(and, 0xff, 512);
   3066 	memset(xor, 0x00, 512);
   3067 
   3068 	src = 0;
   3069 	dst = 0;
   3070 	for (i = 0; i < 64; i++) {
   3071 		for (j = 0; j < 64; j += 8) {
   3072 			if ((i < dp->rd_cursor.rc_size.y) &&
   3073 			    (j < dp->rd_cursor.rc_size.x)) {
   3074 
   3075 				/* take care to leave odd bits alone */
   3076 				and[dst] &= ~(msk[src]);
   3077 				xor[dst] = img[src] & msk[src];
   3078 				src++;
   3079 			}
   3080 			dst++;
   3081 		}
   3082 	}
   3083 
   3084 	/* copy the image into place */
   3085 	for (i = 0; i < 64; i++) {
   3086 		memcpy((uint8_t *)dp->rd_curptr + (i * 16),
   3087 		    &and[i * 8], 8);
   3088 		memcpy((uint8_t *)dp->rd_curptr + (i * 16) + 8,
   3089 		    &xor[i * 8], 8);
   3090 	}
   3091 }
   3092 
   3093 static void
   3094 radeonfb_cursor_position(struct radeonfb_display *dp)
   3095 {
   3096 	struct radeonfb_softc	*sc = dp->rd_softc;
   3097 	uint32_t		offset, hvoff, hvpos;	/* registers */
   3098 	uint32_t		coff;			/* cursor offset */
   3099 	int			i, x, y, xoff, yoff, crtcoff;
   3100 
   3101 	/*
   3102 	 * XXX: this also needs to handle pan/scan
   3103 	 */
   3104 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3105 
   3106 		struct radeonfb_crtc	*rcp = &dp->rd_crtcs[i];
   3107 
   3108 		if (rcp->rc_number) {
   3109 			offset = RADEON_CUR2_OFFSET;
   3110 			hvoff = RADEON_CUR2_HORZ_VERT_OFF;
   3111 			hvpos = RADEON_CUR2_HORZ_VERT_POSN;
   3112 			crtcoff = RADEON_CRTC2_OFFSET;
   3113 		} else {
   3114 			offset = RADEON_CUR_OFFSET;
   3115 			hvoff = RADEON_CUR_HORZ_VERT_OFF;
   3116 			hvpos = RADEON_CUR_HORZ_VERT_POSN;
   3117 			crtcoff = RADEON_CRTC_OFFSET;
   3118 		}
   3119 
   3120 		x = dp->rd_cursor.rc_pos.x;
   3121 		y = dp->rd_cursor.rc_pos.y;
   3122 
   3123 		while (y < rcp->rc_yoffset) {
   3124 			rcp->rc_yoffset -= RADEON_PANINCREMENT;
   3125 		}
   3126 		while (y >= (rcp->rc_yoffset + rcp->rc_videomode.vdisplay)) {
   3127 			rcp->rc_yoffset += RADEON_PANINCREMENT;
   3128 		}
   3129 		while (x < rcp->rc_xoffset) {
   3130 			rcp->rc_xoffset -= RADEON_PANINCREMENT;
   3131 		}
   3132 		while (x >= (rcp->rc_xoffset + rcp->rc_videomode.hdisplay)) {
   3133 			rcp->rc_xoffset += RADEON_PANINCREMENT;
   3134 		}
   3135 
   3136 		/* adjust for the cursor's hotspot */
   3137 		x -= dp->rd_cursor.rc_hot.x;
   3138 		y -= dp->rd_cursor.rc_hot.y;
   3139 		xoff = yoff = 0;
   3140 
   3141 		if (x >= dp->rd_virtx)
   3142 			x = dp->rd_virtx - 1;
   3143 		if (y >= dp->rd_virty)
   3144 			y = dp->rd_virty - 1;
   3145 
   3146 		/* now adjust cursor so it is relative to viewport */
   3147 		x -= rcp->rc_xoffset;
   3148 		y -= rcp->rc_yoffset;
   3149 
   3150 		/*
   3151 		 * no need to check for fall off, because we should
   3152 		 * never move off the screen entirely!
   3153 		 */
   3154 		coff = 0;
   3155 		if (x < 0) {
   3156 			xoff = -x;
   3157 			x = 0;
   3158 		}
   3159 		if (y < 0) {
   3160 			yoff = -y;
   3161 			y = 0;
   3162 			coff = (yoff * 2) * 8;
   3163 		}
   3164 
   3165 		/* pan the display */
   3166 		PUT32(sc, crtcoff, (rcp->rc_yoffset * dp->rd_stride) +
   3167 		    rcp->rc_xoffset);
   3168 
   3169 		PUT32(sc, offset, (dp->rd_curoff + coff) | RADEON_CUR_LOCK);
   3170 		PUT32(sc, hvoff, (xoff << 16) | (yoff) | RADEON_CUR_LOCK);
   3171 		/* NB: this unlocks the cursor */
   3172 		PUT32(sc, hvpos, (x << 16) | y);
   3173 	}
   3174 }
   3175 
   3176 static void
   3177 radeonfb_cursor_visible(struct radeonfb_display *dp)
   3178 {
   3179 	int		i;
   3180 	uint32_t	gencntl, bit;
   3181 
   3182 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3183 		if (dp->rd_crtcs[i].rc_number) {
   3184 			gencntl = RADEON_CRTC2_GEN_CNTL;
   3185 			bit = RADEON_CRTC2_CUR_EN;
   3186 		} else {
   3187 			gencntl = RADEON_CRTC_GEN_CNTL;
   3188 			bit = RADEON_CRTC_CUR_EN;
   3189 		}
   3190 
   3191 		if (dp->rd_cursor.rc_visible)
   3192 			SET32(dp->rd_softc, gencntl, bit);
   3193 		else
   3194 			CLR32(dp->rd_softc, gencntl, bit);
   3195 	}
   3196 }
   3197 
   3198 static void
   3199 radeonfb_cursor_cmap(struct radeonfb_display *dp)
   3200 {
   3201 	int		i;
   3202 	uint32_t	c0reg, c1reg;
   3203 	struct radeonfb_softc	*sc = dp->rd_softc;
   3204 
   3205 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3206 		if (dp->rd_crtcs[i].rc_number) {
   3207 			c0reg = RADEON_CUR2_CLR0;
   3208 			c1reg = RADEON_CUR2_CLR1;
   3209 		} else {
   3210 			c0reg = RADEON_CUR_CLR0;
   3211 			c1reg = RADEON_CUR_CLR1;
   3212 		}
   3213 
   3214 		PUT32(sc, c0reg, dp->rd_cursor.rc_cmap[0]);
   3215 		PUT32(sc, c1reg, dp->rd_cursor.rc_cmap[1]);
   3216 	}
   3217 }
   3218 
   3219 static void
   3220 radeonfb_cursor_update(struct radeonfb_display *dp, unsigned which)
   3221 {
   3222 	struct radeonfb_softc	*sc;
   3223 	int		i;
   3224 
   3225 	sc = dp->rd_softc;
   3226 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3227 		if (dp->rd_crtcs[i].rc_number) {
   3228 			SET32(sc, RADEON_CUR2_OFFSET, RADEON_CUR_LOCK);
   3229 		} else {
   3230 			SET32(sc, RADEON_CUR_OFFSET,RADEON_CUR_LOCK);
   3231 		}
   3232 	}
   3233 
   3234 	if (which & WSDISPLAY_CURSOR_DOCMAP)
   3235 		radeonfb_cursor_cmap(dp);
   3236 
   3237 	if (which & WSDISPLAY_CURSOR_DOSHAPE)
   3238 		radeonfb_cursor_shape(dp);
   3239 
   3240 	if (which & WSDISPLAY_CURSOR_DOCUR)
   3241 		radeonfb_cursor_visible(dp);
   3242 
   3243 	/* this one is unconditional, because it updates other stuff */
   3244 	radeonfb_cursor_position(dp);
   3245 }
   3246 
   3247 static struct videomode *
   3248 radeonfb_best_refresh(struct videomode *m1, struct videomode *m2)
   3249 {
   3250 	int	r1, r2;
   3251 
   3252 	/* otherwise pick the higher refresh rate */
   3253 	r1 = DIVIDE(DIVIDE(m1->dot_clock, m1->htotal), m1->vtotal);
   3254 	r2 = DIVIDE(DIVIDE(m2->dot_clock, m2->htotal), m2->vtotal);
   3255 
   3256 	return (r1 < r2 ? m2 : m1);
   3257 }
   3258 
   3259 static const struct videomode *
   3260 radeonfb_port_mode(struct radeonfb_softc *sc, struct radeonfb_port *rp,
   3261     int x, int y)
   3262 {
   3263 	struct edid_info	*ep = &rp->rp_edid;
   3264 	struct videomode	*vmp = NULL;
   3265 	int			i;
   3266 
   3267 	if (!rp->rp_edid_valid) {
   3268 		/* fallback to safe mode */
   3269 		return radeonfb_modelookup(sc->sc_defaultmode);
   3270 	}
   3271 
   3272 	/* always choose the preferred mode first! */
   3273 	if (ep->edid_preferred_mode) {
   3274 
   3275 		/* XXX: add auto-stretching support for native mode */
   3276 
   3277 		/* this may want panning to occur, btw */
   3278 		if ((ep->edid_preferred_mode->hdisplay <= x) &&
   3279 		    (ep->edid_preferred_mode->vdisplay <= y))
   3280 			return ep->edid_preferred_mode;
   3281 	}
   3282 
   3283 	for (i = 0; i < ep->edid_nmodes; i++) {
   3284 		/*
   3285 		 * We elect to pick a resolution that is too large for
   3286 		 * the monitor than one that is too small.  This means
   3287 		 * that we will prefer to pan rather than to try to
   3288 		 * center a smaller display on a larger screen.  In
   3289 		 * practice, this shouldn't matter because if a
   3290 		 * monitor can support a larger resolution, it can
   3291 		 * probably also support the smaller.  A specific
   3292 		 * exception is fixed format panels, but hopefully
   3293 		 * they are properly dealt with by the "autostretch"
   3294 		 * logic above.
   3295 		 */
   3296 		if ((ep->edid_modes[i].hdisplay > x) ||
   3297 		    (ep->edid_modes[i].vdisplay > y)) {
   3298 			continue;
   3299 		}
   3300 
   3301 		/*
   3302 		 * at this point, the display mode is no larger than
   3303 		 * what we've requested.
   3304 		 */
   3305 		if (vmp == NULL)
   3306 			vmp = &ep->edid_modes[i];
   3307 
   3308 		/* eliminate smaller modes */
   3309 		if ((vmp->hdisplay >= ep->edid_modes[i].hdisplay) ||
   3310 		    (vmp->vdisplay >= ep->edid_modes[i].vdisplay))
   3311 			continue;
   3312 
   3313 		if ((vmp->hdisplay < ep->edid_modes[i].hdisplay) ||
   3314 		    (vmp->vdisplay < ep->edid_modes[i].vdisplay)) {
   3315 			vmp = &ep->edid_modes[i];
   3316 			continue;
   3317 		}
   3318 
   3319 		KASSERT(vmp->hdisplay == ep->edid_modes[i].hdisplay);
   3320 		KASSERT(vmp->vdisplay == ep->edid_modes[i].vdisplay);
   3321 
   3322 		vmp = radeonfb_best_refresh(vmp, &ep->edid_modes[i]);
   3323 	}
   3324 
   3325 	return (vmp ? vmp : radeonfb_modelookup(sc->sc_defaultmode));
   3326 }
   3327 
   3328 static int
   3329 radeonfb_hasres(struct videomode *list, int nlist, int x, int y)
   3330 {
   3331 	int	i;
   3332 
   3333 	for (i = 0; i < nlist; i++) {
   3334 		if ((x == list[i].hdisplay) &&
   3335 		    (y == list[i].vdisplay)) {
   3336 			return 1;
   3337 		}
   3338 	}
   3339 	return 0;
   3340 }
   3341 
   3342 static void
   3343 radeonfb_pickres(struct radeonfb_display *dp, uint16_t *x, uint16_t *y,
   3344     int pan)
   3345 {
   3346 	struct radeonfb_port	*rp;
   3347 	struct edid_info	*ep;
   3348 	int			i, j;
   3349 
   3350 	*x = 0;
   3351 	*y = 0;
   3352 
   3353 	if (pan) {
   3354 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   3355 			rp = dp->rd_crtcs[i].rc_port;
   3356 			ep = &rp->rp_edid;
   3357 			if (!rp->rp_edid_valid) {
   3358 				/* monitor not present */
   3359 				continue;
   3360 			}
   3361 
   3362 			/*
   3363 			 * For now we are ignoring "conflict" that
   3364 			 * could occur when mixing some modes like
   3365 			 * 1280x1024 and 1400x800.  It isn't clear
   3366 			 * which is better, so the first one wins.
   3367 			 */
   3368 			for (j = 0; j < ep->edid_nmodes; j++) {
   3369 				/*
   3370 				 * ignore resolutions that are too big for
   3371 				 * the radeon
   3372 				 */
   3373 				if (ep->edid_modes[j].hdisplay >
   3374 				    dp->rd_softc->sc_maxx)
   3375 					continue;
   3376 				if (ep->edid_modes[j].vdisplay >
   3377 				    dp->rd_softc->sc_maxy)
   3378 					continue;
   3379 
   3380 				/*
   3381 				 * pick largest resolution, the
   3382 				 * smaller monitor will pan
   3383 				 */
   3384 				if ((ep->edid_modes[j].hdisplay >= *x) &&
   3385 				    (ep->edid_modes[j].vdisplay >= *y)) {
   3386 					*x = ep->edid_modes[j].hdisplay;
   3387 					*y = ep->edid_modes[j].vdisplay;
   3388 				}
   3389 			}
   3390 		}
   3391 
   3392 	} else {
   3393 		struct videomode	modes[64];
   3394 		int			nmodes = 0;
   3395 		int			valid = 0;
   3396 
   3397 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   3398 			/*
   3399 			 * pick the largest resolution in common.
   3400 			 */
   3401 			rp = dp->rd_crtcs[i].rc_port;
   3402 			ep = &rp->rp_edid;
   3403 
   3404 			if (!rp->rp_edid_valid)
   3405 				continue;
   3406 
   3407 			if (!valid) {
   3408 				/*
   3409 				 * Pick the preferred mode for this port
   3410 				 * if available.
   3411 				 */
   3412 				if (ep->edid_preferred_mode) {
   3413 					struct videomode *vmp =
   3414 						ep->edid_preferred_mode;
   3415 
   3416 					if ((vmp->hdisplay <=
   3417 					     dp->rd_softc->sc_maxx) &&
   3418 					    (vmp->vdisplay <=
   3419 					     dp->rd_softc->sc_maxy))
   3420 						modes[nmodes++] = *vmp;
   3421 				} else {
   3422 
   3423 					/* initialize starting list */
   3424 					for (j = 0; j < ep->edid_nmodes; j++) {
   3425 						/*
   3426 						 * ignore resolutions that are
   3427 						 * too big for the radeon
   3428 						 */
   3429 						if (ep->edid_modes[j].hdisplay >
   3430 						    dp->rd_softc->sc_maxx)
   3431 							continue;
   3432 						if (ep->edid_modes[j].vdisplay >
   3433 						    dp->rd_softc->sc_maxy)
   3434 							continue;
   3435 
   3436 						modes[nmodes] =
   3437 							ep->edid_modes[j];
   3438 						nmodes++;
   3439 					}
   3440 				}
   3441 				valid = 1;
   3442 			} else {
   3443 				/* merge into preexisting list */
   3444 				for (j = 0; j < nmodes; j++) {
   3445 					if (!radeonfb_hasres(ep->edid_modes,
   3446 						ep->edid_nmodes,
   3447 						modes[j].hdisplay,
   3448 						modes[j].vdisplay)) {
   3449 						modes[j] = modes[nmodes];
   3450 						j--;
   3451 						nmodes--;
   3452 					}
   3453 				}
   3454 			}
   3455 		}
   3456 
   3457 		/* now we have to pick from the merged list */
   3458 		for (i = 0; i < nmodes; i++) {
   3459 			if ((modes[i].hdisplay >= *x) &&
   3460 			    (modes[i].vdisplay >= *y)) {
   3461 				*x = modes[i].hdisplay;
   3462 				*y = modes[i].vdisplay;
   3463 			}
   3464 		}
   3465 	}
   3466 
   3467 	if ((*x == 0) || (*y == 0)) {
   3468 		/* fallback to safe mode */
   3469 		*x = 640;
   3470 		*y = 480;
   3471 	}
   3472 }
   3473 
   3474 /*
   3475  * backlight levels are linear on:
   3476  * - RV200, RV250, RV280, RV350
   3477  * - but NOT on PowerBook4,3 6,3 6,5
   3478  * according to Linux' radeonfb
   3479  */
   3480 
   3481 /* Get the current backlight level for the display.  */
   3482 
   3483 static int
   3484 radeonfb_get_backlight(struct radeonfb_display *dp)
   3485 {
   3486 	int s;
   3487 	uint32_t level;
   3488 
   3489 	s = spltty();
   3490 
   3491 	level = radeonfb_get32(dp->rd_softc, RADEON_LVDS_GEN_CNTL);
   3492 	level &= RADEON_LVDS_BL_MOD_LEV_MASK;
   3493 	level >>= RADEON_LVDS_BL_MOD_LEV_SHIFT;
   3494 
   3495 	/*
   3496 	 * On some chips, we should negate the backlight level.
   3497 	 * XXX Find out on which chips.
   3498 	 */
   3499 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT)
   3500 	level = RADEONFB_BACKLIGHT_MAX - level;
   3501 
   3502 	splx(s);
   3503 
   3504 	return level;
   3505 }
   3506 
   3507 /* Set the backlight to the given level for the display.  */
   3508 
   3509 static int
   3510 radeonfb_set_backlight(struct radeonfb_display *dp, int level)
   3511 {
   3512 	struct radeonfb_softc *sc;
   3513 	int rlevel, s;
   3514 	uint32_t lvds;
   3515 
   3516 	s = spltty();
   3517 
   3518 	if (level < 0)
   3519 		level = 0;
   3520 	else if (level >= RADEONFB_BACKLIGHT_MAX)
   3521 		level = RADEONFB_BACKLIGHT_MAX;
   3522 
   3523 	sc = dp->rd_softc;
   3524 
   3525 	/* On some chips, we should negate the backlight level. */
   3526 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT) {
   3527 	rlevel = RADEONFB_BACKLIGHT_MAX - level;
   3528 	} else
   3529 	rlevel = level;
   3530 
   3531 	callout_stop(&dp->rd_bl_lvds_co);
   3532 	radeonfb_engine_idle(sc);
   3533 
   3534 	/*
   3535 	 * Turn off the display if the backlight is set to 0, since the
   3536 	 * display is useless without backlight anyway.
   3537 	 */
   3538 	if (level == 0)
   3539 		radeonfb_blank(dp, 1);
   3540 	else if (radeonfb_get_backlight(dp) == 0)
   3541 		radeonfb_blank(dp, 0);
   3542 
   3543 	lvds = radeonfb_get32(sc, RADEON_LVDS_GEN_CNTL);
   3544 	lvds &= ~RADEON_LVDS_DISPLAY_DIS;
   3545 	if (!(lvds & RADEON_LVDS_BLON) || !(lvds & RADEON_LVDS_ON)) {
   3546 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_DIGON;
   3547 		lvds |= RADEON_LVDS_BLON | RADEON_LVDS_EN;
   3548 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   3549 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   3550 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   3551 		lvds |= RADEON_LVDS_ON;
   3552 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_BL_MOD_EN;
   3553 	} else {
   3554 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   3555 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   3556 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   3557 	}
   3558 
   3559 	dp->rd_bl_lvds_val &= ~RADEON_LVDS_STATE_MASK;
   3560 	dp->rd_bl_lvds_val |= lvds & RADEON_LVDS_STATE_MASK;
   3561 	/* XXX What is the correct delay? */
   3562 	callout_schedule(&dp->rd_bl_lvds_co, 200 * hz);
   3563 
   3564 	splx(s);
   3565 
   3566 	return 0;
   3567 }
   3568 
   3569 /*
   3570  * Callout function for delayed operations on the LVDS_GEN_CNTL register.
   3571  * Set the delayed bits in the register, and clear the stored delayed
   3572  * value.
   3573  */
   3574 
   3575 static void radeonfb_lvds_callout(void *arg)
   3576 {
   3577 	struct radeonfb_display *dp = arg;
   3578 	int s;
   3579 
   3580 	s = splhigh();
   3581 
   3582 	radeonfb_mask32(dp->rd_softc, RADEON_LVDS_GEN_CNTL, ~0,
   3583 			dp->rd_bl_lvds_val);
   3584 	dp->rd_bl_lvds_val = 0;
   3585 
   3586 	splx(s);
   3587 }
   3588 
   3589 static void
   3590 radeonfb_brightness_up(device_t dev)
   3591 {
   3592 	struct radeonfb_softc *sc = device_private(dev);
   3593 	int level;
   3594 
   3595 	/* we assume the main display is the first one - need a better way */
   3596 	if (sc->sc_ndisplays < 1) return;
   3597 	level = radeonfb_get_backlight(&sc->sc_displays[0]);
   3598 	level = min(RADEONFB_BACKLIGHT_MAX, level + 5);
   3599 	radeonfb_set_backlight(&sc->sc_displays[0], level);
   3600 }
   3601 
   3602 static void
   3603 radeonfb_brightness_down(device_t dev)
   3604 {
   3605 	struct radeonfb_softc *sc = device_private(dev);
   3606 	int level;
   3607 
   3608 	/* we assume the main display is the first one - need a better way */
   3609 	if (sc->sc_ndisplays < 1) return;
   3610 	level = radeonfb_get_backlight(&sc->sc_displays[0]);
   3611 	level = max(0, level - 5);
   3612 	radeonfb_set_backlight(&sc->sc_displays[0], level);
   3613 }
   3614