Home | History | Annotate | Line # | Download | only in pci
radeonfb.c revision 1.69
      1 /*	$NetBSD: radeonfb.c,v 1.69 2012/12/30 09:45:05 macallan Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2006 Itronix Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Garrett D'Amore for Itronix Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. The name of Itronix Inc. may not be used to endorse
     18  *    or promote products derived from this software without specific
     19  *    prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND ANY EXPRESS
     22  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     23  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
     25  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
     27  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     30  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     31  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 /*
     35  * ATI Technologies Inc. ("ATI") has not assisted in the creation of, and
     36  * does not endorse, this software.  ATI will not be responsible or liable
     37  * for any actual or alleged damage or loss caused by or in connection with
     38  * the use of or reliance on this software.
     39  */
     40 
     41 /*
     42  * Portions of this code were taken from XFree86's Radeon driver, which bears
     43  * this notice:
     44  *
     45  * Copyright 2000 ATI Technologies Inc., Markham, Ontario, and
     46  *                VA Linux Systems Inc., Fremont, California.
     47  *
     48  * All Rights Reserved.
     49  *
     50  * Permission is hereby granted, free of charge, to any person obtaining
     51  * a copy of this software and associated documentation files (the
     52  * "Software"), to deal in the Software without restriction, including
     53  * without limitation on the rights to use, copy, modify, merge,
     54  * publish, distribute, sublicense, and/or sell copies of the Software,
     55  * and to permit persons to whom the Software is furnished to do so,
     56  * subject to the following conditions:
     57  *
     58  * The above copyright notice and this permission notice (including the
     59  * next paragraph) shall be included in all copies or substantial
     60  * portions of the Software.
     61  *
     62  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     63  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     64  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     65  * NON-INFRINGEMENT.  IN NO EVENT SHALL ATI, VA LINUX SYSTEMS AND/OR
     66  * THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
     67  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     68  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     69  * DEALINGS IN THE SOFTWARE.
     70  */
     71 
     72 #include <sys/cdefs.h>
     73 __KERNEL_RCSID(0, "$NetBSD: radeonfb.c,v 1.69 2012/12/30 09:45:05 macallan Exp $");
     74 
     75 #include <sys/param.h>
     76 #include <sys/systm.h>
     77 #include <sys/device.h>
     78 #include <sys/malloc.h>
     79 #include <sys/bus.h>
     80 #include <sys/kernel.h>
     81 #include <sys/lwp.h>
     82 #include <sys/kauth.h>
     83 
     84 #include <dev/wscons/wsdisplayvar.h>
     85 #include <dev/wscons/wsconsio.h>
     86 #include <dev/wsfont/wsfont.h>
     87 #include <dev/rasops/rasops.h>
     88 #include <dev/videomode/videomode.h>
     89 #include <dev/videomode/edidvar.h>
     90 #include <dev/wscons/wsdisplay_vconsvar.h>
     91 #include <dev/pci/wsdisplay_pci.h>
     92 #include <dev/wscons/wsdisplay_glyphcachevar.h>
     93 
     94 #include <dev/pci/pcidevs.h>
     95 #include <dev/pci/pcireg.h>
     96 #include <dev/pci/pcivar.h>
     97 #include <dev/pci/pciio.h>
     98 #include <dev/pci/radeonfbreg.h>
     99 #include <dev/pci/radeonfbvar.h>
    100 #include "opt_radeonfb.h"
    101 #include "opt_vcons.h"
    102 
    103 #ifdef RADEONFB_DEPTH_32
    104 #define RADEONFB_DEFAULT_DEPTH 32
    105 #else
    106 #define RADEONFB_DEFAULT_DEPTH 8
    107 #endif
    108 
    109 static int radeonfb_match(device_t, cfdata_t, void *);
    110 static void radeonfb_attach(device_t, device_t, void *);
    111 static int radeonfb_ioctl(void *, void *, unsigned long, void *, int,
    112     struct lwp *);
    113 static paddr_t radeonfb_mmap(void *, void *, off_t, int);
    114 static int radeonfb_scratch_test(struct radeonfb_softc *, int, uint32_t);
    115 static void radeonfb_loadbios(struct radeonfb_softc *,
    116     const struct pci_attach_args *);
    117 
    118 static uintmax_t radeonfb_getprop_num(struct radeonfb_softc *, const char *,
    119     uintmax_t);
    120 static int radeonfb_getclocks(struct radeonfb_softc *);
    121 static int radeonfb_gettmds(struct radeonfb_softc *);
    122 static int radeonfb_calc_dividers(struct radeonfb_softc *, uint32_t,
    123     uint32_t *, uint32_t *);
    124 static int radeonfb_getconnectors(struct radeonfb_softc *);
    125 static const struct videomode *radeonfb_modelookup(const char *);
    126 static void radeonfb_init_screen(void *, struct vcons_screen *, int, long *);
    127 static void radeonfb_pllwriteupdate(struct radeonfb_softc *, int);
    128 static void radeonfb_pllwaitatomicread(struct radeonfb_softc *, int);
    129 static void radeonfb_program_vclk(struct radeonfb_softc *, int, int);
    130 static void radeonfb_modeswitch(struct radeonfb_display *);
    131 static void radeonfb_setcrtc(struct radeonfb_display *, int);
    132 static void radeonfb_init_misc(struct radeonfb_softc *);
    133 static void radeonfb_set_fbloc(struct radeonfb_softc *);
    134 static void radeonfb_init_palette(struct radeonfb_softc *, int);
    135 static void radeonfb_r300cg_workaround(struct radeonfb_softc *);
    136 
    137 static int radeonfb_isblank(struct radeonfb_display *);
    138 static void radeonfb_blank(struct radeonfb_display *, int);
    139 static int radeonfb_set_cursor(struct radeonfb_display *,
    140     struct wsdisplay_cursor *);
    141 static int radeonfb_set_curpos(struct radeonfb_display *,
    142     struct wsdisplay_curpos *);
    143 
    144 /* acceleration support */
    145 static void  radeonfb_rectfill(struct radeonfb_display *, int dstx, int dsty,
    146     int width, int height, uint32_t color);
    147 static void  radeonfb_rectfill_a(void *, int, int, int, int, long);
    148 static void radeonfb_bitblt(void *, int srcx, int srcy,
    149     int dstx, int dsty, int width, int height, int rop);
    150 
    151 /* hw cursor support */
    152 static void radeonfb_cursor_cmap(struct radeonfb_display *);
    153 static void radeonfb_cursor_shape(struct radeonfb_display *);
    154 static void radeonfb_cursor_position(struct radeonfb_display *);
    155 static void radeonfb_cursor_visible(struct radeonfb_display *);
    156 static void radeonfb_cursor_update(struct radeonfb_display *, unsigned);
    157 
    158 static inline void radeonfb_wait_fifo(struct radeonfb_softc *, int);
    159 static void radeonfb_engine_idle(struct radeonfb_softc *);
    160 static void radeonfb_engine_flush(struct radeonfb_softc *);
    161 static void radeonfb_engine_reset(struct radeonfb_softc *);
    162 static void radeonfb_engine_init(struct radeonfb_display *);
    163 static inline void radeonfb_unclip(struct radeonfb_softc *);
    164 
    165 static void radeonfb_eraserows(void *, int, int, long);
    166 static void radeonfb_erasecols(void *, int, int, int, long);
    167 static void radeonfb_copyrows(void *, int, int, int);
    168 static void radeonfb_copycols(void *, int, int, int, int);
    169 static void radeonfb_cursor(void *, int, int, int);
    170 static void radeonfb_putchar(void *, int, int, unsigned, long);
    171 static void radeonfb_putchar_aa32(void *, int, int, unsigned, long);
    172 static void radeonfb_putchar_aa8(void *, int, int, unsigned, long);
    173 static void radeonfb_putchar_wrapper(void *, int, int, unsigned, long);
    174 
    175 static int radeonfb_set_backlight(struct radeonfb_display *, int);
    176 static int radeonfb_get_backlight(struct radeonfb_display *);
    177 static void radeonfb_switch_backlight(struct radeonfb_display *, int);
    178 static void radeonfb_lvds_callout(void *);
    179 
    180 static void radeonfb_brightness_up(device_t);
    181 static void radeonfb_brightness_down(device_t);
    182 
    183 static struct videomode *radeonfb_best_refresh(struct videomode *,
    184     struct videomode *);
    185 static void radeonfb_pickres(struct radeonfb_display *, uint16_t *,
    186     uint16_t *, int);
    187 static const struct videomode *radeonfb_port_mode(struct radeonfb_softc *,
    188     struct radeonfb_port *, int, int);
    189 
    190 static int radeonfb_drm_print(void *, const char *);
    191 
    192 #ifdef	RADEONFB_DEBUG
    193 int	radeon_debug = 1;
    194 #define	DPRINTF(x)	\
    195 	if (radeon_debug) printf x
    196 #define	PRINTREG(r)	DPRINTF((#r " = %08x\n", GET32(sc, r)))
    197 #define	PRINTPLL(r)	DPRINTF((#r " = %08x\n", GETPLL(sc, r)))
    198 #else
    199 #define	DPRINTF(x)
    200 #define	PRINTREG(r)
    201 #define	PRINTPLL(r)
    202 #endif
    203 
    204 #define	ROUNDUP(x,y)	(((x) + ((y) - 1)) & ~((y) - 1))
    205 
    206 #ifndef	RADEON_DEFAULT_MODE
    207 /* any reasonably modern display should handle this */
    208 #define	RADEON_DEFAULT_MODE	"1024x768x60"
    209 #endif
    210 
    211 extern const u_char rasops_cmap[768];
    212 
    213 const char	*radeonfb_default_mode = RADEON_DEFAULT_MODE;
    214 
    215 static struct {
    216 	int		size;		/* minimum memory size (MB) */
    217 	int		maxx;		/* maximum x dimension */
    218 	int		maxy;		/* maximum y dimension */
    219 	int		maxbpp;		/* maximum bpp */
    220 	int		maxdisp;	/* maximum logical display count */
    221 } radeonfb_limits[] = {
    222 	{ 32,	2048, 1536, 32, 2 },
    223 	{ 16,	1600, 1200, 32, 2 },
    224 	{ 8,	1600, 1200, 32, 1 },
    225 	{ 0,	0, 0, 0, 0 },
    226 };
    227 
    228 static struct wsscreen_descr radeonfb_stdscreen = {
    229 	"fb",		/* name */
    230 	0, 0,		/* ncols, nrows */
    231 	NULL,		/* textops */
    232 	8, 16,		/* fontwidth, fontheight */
    233 	WSSCREEN_WSCOLORS | WSSCREEN_UNDERLINE, /* capabilities */
    234 	0,		/* modecookie */
    235 };
    236 
    237 struct wsdisplay_accessops radeonfb_accessops = {
    238 	radeonfb_ioctl,
    239 	radeonfb_mmap,
    240 	NULL,		/* vcons_alloc_screen */
    241 	NULL,		/* vcons_free_screen */
    242 	NULL,		/* vcons_show_screen */
    243 	NULL,		/* load_font */
    244 	NULL,		/* pollc */
    245 	NULL,		/* scroll */
    246 };
    247 
    248 static struct {
    249 	uint16_t	devid;
    250 	uint16_t	family;
    251 	uint16_t	flags;
    252 } radeonfb_devices[] =
    253 {
    254 	/* R100 family */
    255 	{ PCI_PRODUCT_ATI_RADEON_R100_QD,	RADEON_R100, 0 },
    256 	{ PCI_PRODUCT_ATI_RADEON_R100_QE,	RADEON_R100, 0 },
    257 	{ PCI_PRODUCT_ATI_RADEON_R100_QF,	RADEON_R100, 0 },
    258 	{ PCI_PRODUCT_ATI_RADEON_R100_QG,	RADEON_R100, 0 },
    259 
    260 	/* RV100 family */
    261 	{ PCI_PRODUCT_ATI_RADEON_RV100_LY,	RADEON_RV100, RFB_MOB },
    262 	{ PCI_PRODUCT_ATI_RADEON_RV100_LZ,	RADEON_RV100, RFB_MOB },
    263 	{ PCI_PRODUCT_ATI_RADEON_RV100_QY,	RADEON_RV100, 0 },
    264 	{ PCI_PRODUCT_ATI_RADEON_RV100_QZ,	RADEON_RV100, 0 },
    265 
    266 	/* RS100 family */
    267 	{ PCI_PRODUCT_ATI_RADEON_RS100_4136,	RADEON_RS100, 0 },
    268 	{ PCI_PRODUCT_ATI_RADEON_RS100_4336,	RADEON_RS100, RFB_MOB },
    269 
    270 	/* RS200/RS250 family */
    271 	{ PCI_PRODUCT_ATI_RADEON_RS200_4337,	RADEON_RS200, RFB_MOB },
    272 	{ PCI_PRODUCT_ATI_RADEON_RS200_A7,	RADEON_RS200, 0 },
    273 	{ PCI_PRODUCT_ATI_RADEON_RS250_B7,	RADEON_RS200, RFB_MOB },
    274 	{ PCI_PRODUCT_ATI_RADEON_RS250_D7,	RADEON_RS200, 0 },
    275 
    276 	/* R200 family */
    277 	/* add more R200 products? , 5148 */
    278 	{ PCI_PRODUCT_ATI_RADEON_R200_BB,	RADEON_R200, 0 },
    279 	{ PCI_PRODUCT_ATI_RADEON_R200_BC,	RADEON_R200, 0 },
    280 	{ PCI_PRODUCT_ATI_RADEON_R200_QH,	RADEON_R200, 0 },
    281 	{ PCI_PRODUCT_ATI_RADEON_R200_QL,	RADEON_R200, 0 },
    282 	{ PCI_PRODUCT_ATI_RADEON_R200_QM,	RADEON_R200, 0 },
    283 
    284 	/* RV200 family */
    285 	{ PCI_PRODUCT_ATI_RADEON_RV200_LW,	RADEON_RV200, RFB_MOB },
    286 	{ PCI_PRODUCT_ATI_RADEON_RV200_LX,	RADEON_RV200, RFB_MOB },
    287 	{ PCI_PRODUCT_ATI_RADEON_RV200_QW,	RADEON_RV200, 0 },
    288 	{ PCI_PRODUCT_ATI_RADEON_RV200_QX,	RADEON_RV200, 0 },
    289 
    290 	/* RV250 family */
    291 	{ PCI_PRODUCT_ATI_RADEON_RV250_4966,	RADEON_RV250, 0 },
    292 	{ PCI_PRODUCT_ATI_RADEON_RV250_4967,	RADEON_RV250, 0 },
    293 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C64,	RADEON_RV250, RFB_MOB },
    294 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C66,	RADEON_RV250, RFB_MOB },
    295 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C67,	RADEON_RV250, RFB_MOB },
    296 
    297 	/* RS300 family */
    298 	{ PCI_PRODUCT_ATI_RADEON_RS300_X5,	RADEON_RS300, 0 },
    299 	{ PCI_PRODUCT_ATI_RADEON_RS300_X4,	RADEON_RS300, 0 },
    300 	{ PCI_PRODUCT_ATI_RADEON_RS300_7834,	RADEON_RS300, 0 },
    301 	{ PCI_PRODUCT_ATI_RADEON_RS300_7835,	RADEON_RS300, RFB_MOB },
    302 
    303 	/* RV280 family */
    304 	{ PCI_PRODUCT_ATI_RADEON_RV280_5960,	RADEON_RV280, 0 },
    305 	{ PCI_PRODUCT_ATI_RADEON_RV280_5961,	RADEON_RV280, 0 },
    306 	{ PCI_PRODUCT_ATI_RADEON_RV280_5962,	RADEON_RV280, 0 },
    307 	{ PCI_PRODUCT_ATI_RADEON_RV280_5963,	RADEON_RV280, 0 },
    308 	{ PCI_PRODUCT_ATI_RADEON_RV280_5964,	RADEON_RV280, 0 },
    309 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C61,	RADEON_RV280, RFB_MOB },
    310 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C63,	RADEON_RV280, RFB_MOB },
    311 
    312 	/* R300 family */
    313 	{ PCI_PRODUCT_ATI_RADEON_R300_AD,	RADEON_R300, 0 },
    314 	{ PCI_PRODUCT_ATI_RADEON_R300_AE,	RADEON_R300, 0 },
    315 	{ PCI_PRODUCT_ATI_RADEON_R300_AF,	RADEON_R300, 0 },
    316 	{ PCI_PRODUCT_ATI_RADEON_R300_AG,	RADEON_R300, 0 },
    317 	{ PCI_PRODUCT_ATI_RADEON_R300_ND,	RADEON_R300, 0 },
    318 	{ PCI_PRODUCT_ATI_RADEON_R300_NE,	RADEON_R300, 0 },
    319 	{ PCI_PRODUCT_ATI_RADEON_R300_NF,	RADEON_R300, 0 },
    320 	{ PCI_PRODUCT_ATI_RADEON_R300_NG,	RADEON_R300, 0 },
    321 
    322 	/* RV350/RV360 family */
    323 	{ PCI_PRODUCT_ATI_RADEON_RV350_AP,	RADEON_RV350, 0 },
    324 	{ PCI_PRODUCT_ATI_RADEON_RV350_AQ,	RADEON_RV350, 0 },
    325 	{ PCI_PRODUCT_ATI_RADEON_RV360_AR,	RADEON_RV350, 0 },
    326 	{ PCI_PRODUCT_ATI_RADEON_RV350_AS,	RADEON_RV350, 0 },
    327 	{ PCI_PRODUCT_ATI_RADEON_RV350_AT,	RADEON_RV350, 0 },
    328 	{ PCI_PRODUCT_ATI_RADEON_RV350_AV,	RADEON_RV350, 0 },
    329 	{ PCI_PRODUCT_ATI_RADEON_RV350_NP,	RADEON_RV350, RFB_MOB },
    330 	{ PCI_PRODUCT_ATI_RADEON_RV350_NQ,	RADEON_RV350, RFB_MOB },
    331 	{ PCI_PRODUCT_ATI_RADEON_RV350_NR,	RADEON_RV350, RFB_MOB },
    332 	{ PCI_PRODUCT_ATI_RADEON_RV350_NS,	RADEON_RV350, RFB_MOB },
    333 	{ PCI_PRODUCT_ATI_RADEON_RV350_NT,	RADEON_RV350, RFB_MOB },
    334 	{ PCI_PRODUCT_ATI_RADEON_RV350_NV,	RADEON_RV350, RFB_MOB },
    335 
    336 	/* R350/R360 family */
    337 	{ PCI_PRODUCT_ATI_RADEON_R350_AH,	RADEON_R350, 0 },
    338 	{ PCI_PRODUCT_ATI_RADEON_R350_AI,	RADEON_R350, 0 },
    339 	{ PCI_PRODUCT_ATI_RADEON_R350_AJ,	RADEON_R350, 0 },
    340 	{ PCI_PRODUCT_ATI_RADEON_R350_AK,	RADEON_R350, 0 },
    341 	{ PCI_PRODUCT_ATI_RADEON_R350_NH,	RADEON_R350, 0 },
    342 	{ PCI_PRODUCT_ATI_RADEON_R350_NI,	RADEON_R350, 0 },
    343 	{ PCI_PRODUCT_ATI_RADEON_R350_NK,	RADEON_R350, 0 },
    344 	{ PCI_PRODUCT_ATI_RADEON_R360_NJ,	RADEON_R350, 0 },
    345 
    346 	/* RV380/RV370 family */
    347 	{ PCI_PRODUCT_ATI_RADEON_RV380_3150,	RADEON_RV380, RFB_MOB },
    348 	{ PCI_PRODUCT_ATI_RADEON_RV380_3154,	RADEON_RV380, RFB_MOB },
    349 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E50,	RADEON_RV380, 0 },
    350 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E54,	RADEON_RV380, 0 },
    351 	{ PCI_PRODUCT_ATI_RADEON_RV370_5460,	RADEON_RV380, RFB_MOB },
    352 	{ PCI_PRODUCT_ATI_RADEON_RV370_5464,	RADEON_RV380, RFB_MOB },
    353 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B60,	RADEON_RV380, 0 },
    354 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B64,	RADEON_RV380, 0 },
    355 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B65,	RADEON_RV380, 0 },
    356 
    357 	/* R420/R423 family */
    358 	{ PCI_PRODUCT_ATI_RADEON_R420_JH,	RADEON_R420, 0 },
    359 	{ PCI_PRODUCT_ATI_RADEON_R420_JI,	RADEON_R420, 0 },
    360 	{ PCI_PRODUCT_ATI_RADEON_R420_JJ,	RADEON_R420, 0 },
    361 	{ PCI_PRODUCT_ATI_RADEON_R420_JK,	RADEON_R420, 0 },
    362 	{ PCI_PRODUCT_ATI_RADEON_R420_JL,	RADEON_R420, 0 },
    363 	{ PCI_PRODUCT_ATI_RADEON_R420_JM,	RADEON_R420, 0 },
    364 	{ PCI_PRODUCT_ATI_RADEON_R420_JN,	RADEON_R420, RFB_MOB },
    365 	{ PCI_PRODUCT_ATI_RADEON_R420_JP,	RADEON_R420, 0 },
    366 	{ PCI_PRODUCT_ATI_RADEON_R423_UH,	RADEON_R420, 0 },
    367 	{ PCI_PRODUCT_ATI_RADEON_R423_UI,	RADEON_R420, 0 },
    368 	{ PCI_PRODUCT_ATI_RADEON_R423_UJ,	RADEON_R420, 0 },
    369 	{ PCI_PRODUCT_ATI_RADEON_R423_UK,	RADEON_R420, 0 },
    370 	{ PCI_PRODUCT_ATI_RADEON_R423_UQ,	RADEON_R420, 0 },
    371 	{ PCI_PRODUCT_ATI_RADEON_R423_UR,	RADEON_R420, 0 },
    372 	{ PCI_PRODUCT_ATI_RADEON_R423_UT,	RADEON_R420, 0 },
    373 	{ PCI_PRODUCT_ATI_RADEON_R423_5D57,	RADEON_R420, 0 },
    374 	{ PCI_PRODUCT_ATI_RADEON_R430_554F,	RADEON_R420, 0 },
    375 
    376 	{ 0, 0, 0 }
    377 };
    378 
    379 static struct {
    380 	int divider;
    381 	int mask;
    382 } radeonfb_dividers[] = {
    383 	{ 16, 5 },
    384 	{ 12, 7 },
    385 	{  8, 3 },
    386 	{  6, 6 },
    387 	{  4, 2 },
    388 	{  3, 4 },
    389 	{  2, 1 },
    390 	{  1, 0 },
    391 	{  0, 0 }
    392 };
    393 
    394 /*
    395  * This table taken from X11.
    396  */
    397 static const struct {
    398 	int			family;
    399 	struct radeon_tmds_pll	plls[4];
    400 } radeonfb_tmds_pll[] = {
    401 	{ RADEON_R100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    402 	{ RADEON_RV100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    403 	{ RADEON_RS100, {{0, 0}}},
    404 	{ RADEON_RV200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    405 	{ RADEON_RS200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    406 	{ RADEON_R200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    407 	{ RADEON_RV250,	{{15500, 0x81b}, {-1, 0x83f}}},
    408 	{ RADEON_RS300, {{0, 0}}},
    409 	{ RADEON_RV280,	{{13000, 0x400f4}, {15000, 0x400f7}}},
    410 	{ RADEON_R300,	{{-1, 0xb01cb}}},
    411 	{ RADEON_R350,	{{-1, 0xb01cb}}},
    412 	{ RADEON_RV350,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    413 	{ RADEON_RV380,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    414 	{ RADEON_R420,	{{-1, 0xb01cb}}},
    415 };
    416 
    417 #define RADEONFB_BACKLIGHT_MAX    255  /* Maximum backlight level. */
    418 
    419 
    420 CFATTACH_DECL_NEW(radeonfb, sizeof (struct radeonfb_softc),
    421     radeonfb_match, radeonfb_attach, NULL, NULL);
    422 
    423 static int
    424 radeonfb_match(device_t parent, cfdata_t match, void *aux)
    425 {
    426 	const struct pci_attach_args	*pa = aux;
    427 	int			i;
    428 
    429 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_ATI)
    430 		return 0;
    431 
    432 	for (i = 0; radeonfb_devices[i].devid; i++) {
    433 		if (PCI_PRODUCT(pa->pa_id) == radeonfb_devices[i].devid)
    434 			return 100;	/* high to defeat VGA/VESA */
    435 	}
    436 
    437 	return 0;
    438 }
    439 
    440 static void
    441 radeonfb_attach(device_t parent, device_t dev, void *aux)
    442 {
    443 	struct radeonfb_softc	*sc = device_private(dev);
    444 	const struct pci_attach_args	*pa = aux;
    445 	const char		*mptr;
    446 	bus_size_t		bsz;
    447 	pcireg_t		screg;
    448 	int			i, j, fg, bg, ul, flags;
    449 	uint32_t		v;
    450 
    451 	sc->sc_dev = dev;
    452 	sc->sc_id = pa->pa_id;
    453 	for (i = 0; radeonfb_devices[i].devid; i++) {
    454 		if (PCI_PRODUCT(sc->sc_id) == radeonfb_devices[i].devid)
    455 			break;
    456 	}
    457 
    458 	pci_aprint_devinfo(pa, NULL);
    459 
    460 	DPRINTF((prop_dictionary_externalize(device_properties(dev))));
    461 
    462 	KASSERT(radeonfb_devices[i].devid != 0);
    463 	sc->sc_pt = pa->pa_tag;
    464 	sc->sc_iot = pa->pa_iot;
    465 	sc->sc_pc = pa->pa_pc;
    466 	sc->sc_family = radeonfb_devices[i].family;
    467 	sc->sc_flags = radeonfb_devices[i].flags;
    468 
    469 	/* enable memory and IO access */
    470 	screg = pci_conf_read(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG);
    471 	screg |= PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE;
    472 	pci_conf_write(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG, screg);
    473 
    474 	/*
    475 	 * Some flags are general to entire chip families, and rather
    476 	 * than clutter up the table with them, we go ahead and set
    477 	 * them here.
    478 	 */
    479 	switch (sc->sc_family) {
    480 	case RADEON_RS100:
    481 	case RADEON_RS200:
    482 		sc->sc_flags |= RFB_IGP | RFB_RV100;
    483 		break;
    484 
    485 	case RADEON_RV100:
    486 	case RADEON_RV200:
    487 	case RADEON_RV250:
    488 	case RADEON_RV280:
    489 		sc->sc_flags |= RFB_RV100;
    490 		break;
    491 
    492 	case RADEON_RS300:
    493 		sc->sc_flags |= RFB_SDAC | RFB_IGP | RFB_RV100;
    494 		break;
    495 
    496 	case RADEON_R300:
    497 	case RADEON_RV350:
    498 	case RADEON_R350:
    499 	case RADEON_RV380:
    500 	case RADEON_R420:
    501 		/* newer chips */
    502 		sc->sc_flags |= RFB_R300;
    503 		break;
    504 
    505 	case RADEON_R100:
    506 		sc->sc_flags |= RFB_NCRTC2;
    507 		break;
    508 	}
    509 
    510 	if ((sc->sc_family == RADEON_RV200) ||
    511 	    (sc->sc_family == RADEON_RV250) ||
    512 	    (sc->sc_family == RADEON_RV280) ||
    513 	    (sc->sc_family == RADEON_RV350)) {
    514 		bool inverted = 0;
    515 		/* backlight level is linear */
    516 		DPRINTF(("found RV* chip, backlight is supposedly linear\n"));
    517 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
    518 		    "backlight_level_reverted", &inverted);
    519 		if (inverted) {
    520 			DPRINTF(("nope, it's inverted\n"));
    521 			sc->sc_flags |= RFB_INV_BLIGHT;
    522 		}
    523 	} else
    524 		sc->sc_flags |= RFB_INV_BLIGHT;
    525 
    526 	/*
    527 	 * XXX: to support true multihead, this must change.
    528 	 */
    529 	sc->sc_ndisplays = 1;
    530 
    531 	/* XXX: */
    532 	if (!HAS_CRTC2(sc)) {
    533 		sc->sc_ndisplays = 1;
    534 	}
    535 
    536 	if (pci_mapreg_map(pa, RADEON_MAPREG_MMIO, PCI_MAPREG_TYPE_MEM,	0,
    537 		&sc->sc_regt, &sc->sc_regh, &sc->sc_regaddr,
    538 		&sc->sc_regsz) != 0) {
    539 		aprint_error("%s: unable to map registers!\n", XNAME(sc));
    540 		goto error;
    541 	}
    542 
    543 	if (pci_mapreg_info(sc->sc_pc, sc->sc_pt, PCI_MAPREG_ROM,
    544 	     PCI_MAPREG_TYPE_ROM, &sc->sc_romaddr, &sc->sc_romsz, &flags) != 0)
    545 	{
    546 		aprint_error("%s: unable to find ROM!\n", XNAME(sc));
    547 		goto error;
    548 	}
    549 	sc->sc_romt = sc->sc_memt;
    550 
    551 	sc->sc_mapped = TRUE;
    552 
    553 	/* scratch register test... */
    554 	if (radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0x55555555) ||
    555 	    radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0xaaaaaaaa)) {
    556 		aprint_error("%s: scratch register test failed!\n", XNAME(sc));
    557 		goto error;
    558 	}
    559 
    560 	PRINTREG(RADEON_CRTC_EXT_CNTL);
    561 	PRINTREG(RADEON_CRTC_GEN_CNTL);
    562 	PRINTREG(RADEON_CRTC2_GEN_CNTL);
    563 	PRINTREG(RADEON_DISP_OUTPUT_CNTL);
    564 	PRINTREG(RADEON_DAC_CNTL2);
    565 	PRINTREG(RADEON_FP_GEN_CNTL);
    566 	PRINTREG(RADEON_FP2_GEN_CNTL);
    567 
    568 	PRINTREG(RADEON_BIOS_4_SCRATCH);
    569 	PRINTREG(RADEON_FP_GEN_CNTL);
    570 	sc->sc_fp_gen_cntl = GET32(sc, RADEON_FP_GEN_CNTL);
    571 	PRINTREG(RADEON_FP2_GEN_CNTL);
    572 	PRINTREG(RADEON_TMDS_CNTL);
    573 	PRINTREG(RADEON_TMDS_TRANSMITTER_CNTL);
    574 	PRINTREG(RADEON_TMDS_PLL_CNTL);
    575 	PRINTREG(RADEON_LVDS_GEN_CNTL);
    576 	PRINTREG(RADEON_FP_HORZ_STRETCH);
    577 	PRINTREG(RADEON_FP_VERT_STRETCH);
    578 
    579 	if (IS_RV100(sc))
    580 		PUT32(sc, RADEON_TMDS_PLL_CNTL, 0xa27);
    581 
    582 	/* XXX
    583 	 * according to xf86-video-radeon R3xx has this bit backwards
    584 	 */
    585 	if (IS_R300(sc)) {
    586 		PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    587 		    0,
    588 		    ~(RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST));
    589 	} else {
    590 		PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    591 		    RADEON_TMDS_TRANSMITTER_PLLEN,
    592 		    ~(RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST));
    593 	}
    594 
    595 	radeonfb_i2c_init(sc);
    596 
    597 	radeonfb_loadbios(sc, pa);
    598 
    599 #ifdef	RADEONFB_BIOS_INIT
    600 	if (radeonfb_bios_init(sc)) {
    601 		aprint_error("%s: BIOS inititialization failed\n", XNAME(sc));
    602 	}
    603 #endif
    604 
    605 	if (radeonfb_getclocks(sc)) {
    606 		aprint_error("%s: Unable to get reference clocks from BIOS\n",
    607 		    XNAME(sc));
    608 		goto error;
    609 	}
    610 
    611 	if (radeonfb_gettmds(sc)) {
    612 		aprint_error("%s: Unable to identify TMDS PLL settings\n",
    613 		    XNAME(sc));
    614 		goto error;
    615 	}
    616 
    617 	aprint_verbose("%s: refclk = %d.%03d MHz, refdiv = %d "
    618 	    "minpll = %d, maxpll = %d\n", XNAME(sc),
    619 	    (int)sc->sc_refclk / 1000, (int)sc->sc_refclk % 1000,
    620 	    (int)sc->sc_refdiv, (int)sc->sc_minpll, (int)sc->sc_maxpll);
    621 
    622 	radeonfb_getconnectors(sc);
    623 
    624 	radeonfb_set_fbloc(sc);
    625 
    626 	for (i = 0; radeonfb_limits[i].size; i++) {
    627 		if (sc->sc_memsz >= radeonfb_limits[i].size) {
    628 			sc->sc_maxx = radeonfb_limits[i].maxx;
    629 			sc->sc_maxy = radeonfb_limits[i].maxy;
    630 			sc->sc_maxbpp = radeonfb_limits[i].maxbpp;
    631 			/* framebuffer offset, start at a 4K page */
    632 			sc->sc_fboffset = sc->sc_memsz /
    633 			    radeonfb_limits[i].maxdisp;
    634 			/*
    635 			 * we use the fbsize to figure out where we can store
    636 			 * things like cursor data.
    637 			 */
    638 			sc->sc_fbsize =
    639 			    ROUNDUP(ROUNDUP(sc->sc_maxx * sc->sc_maxbpp / 8 ,
    640 					RADEON_STRIDEALIGN) * sc->sc_maxy,
    641 				4096);
    642 			break;
    643 		}
    644 	}
    645 
    646 
    647 	radeonfb_init_misc(sc);
    648 	radeonfb_init_palette(sc, 0);
    649 	if (HAS_CRTC2(sc))
    650 		radeonfb_init_palette(sc, 1);
    651 
    652 	/* program the DAC wirings */
    653 	for (i = 0; i < (HAS_CRTC2(sc) ? 2 : 1); i++) {
    654 		switch (sc->sc_ports[i].rp_dac_type) {
    655 		case RADEON_DAC_PRIMARY:
    656 			PATCH32(sc, RADEON_DAC_CNTL2,
    657 			    i ? RADEON_DAC2_DAC_CLK_SEL : 0,
    658 			    ~RADEON_DAC2_DAC_CLK_SEL);
    659 			break;
    660 		case RADEON_DAC_TVDAC:
    661 			/* we always use the TVDAC to drive a secondary analog
    662 			 * CRT for now.  if we ever support TV-out this will
    663 			 * have to change.
    664 			 */
    665 			SET32(sc, RADEON_DAC_CNTL2,
    666 			    RADEON_DAC2_DAC2_CLK_SEL);
    667 			PATCH32(sc, RADEON_DISP_HW_DEBUG,
    668 			    i ? 0 : RADEON_CRT2_DISP1_SEL,
    669 			    ~RADEON_CRT2_DISP1_SEL);
    670 			/* we're using CRTC2 for the 2nd port */
    671 			if (sc->sc_ports[i].rp_number == 99) {
    672 				PATCH32(sc, RADEON_DISP_OUTPUT_CNTL,
    673 				    RADEON_DISP_DAC2_SOURCE_CRTC2,
    674 				    ~RADEON_DISP_DAC2_SOURCE_MASK);
    675 			}
    676 
    677 			break;
    678 		}
    679 		switch (sc->sc_ports[i].rp_tmds_type) {
    680 		case RADEON_TMDS_INT:
    681 			/* point FP0 at the CRTC this port uses */
    682 			if (IS_R300(sc)) {
    683 				PATCH32(sc, RADEON_FP_GEN_CNTL,
    684 				    sc->sc_ports[i].rp_number ?
    685 				      R200_FP_SOURCE_SEL_CRTC2 :
    686 				      R200_FP_SOURCE_SEL_CRTC1,
    687 				    ~R200_FP_SOURCE_SEL_MASK);
    688 			} else {
    689 				PATCH32(sc, RADEON_FP_GEN_CNTL,
    690 				    sc->sc_ports[i].rp_number ?
    691 				      RADEON_FP_SEL_CRTC2 :
    692 				      RADEON_FP_SEL_CRTC1,
    693 				    ~RADEON_FP_SEL_MASK);
    694 			}
    695 		}
    696 	}
    697 	PRINTREG(RADEON_DAC_CNTL2);
    698 	PRINTREG(RADEON_DISP_HW_DEBUG);
    699 
    700 	/* other DAC programming */
    701 	v = GET32(sc, RADEON_DAC_CNTL);
    702 	v &= (RADEON_DAC_RANGE_CNTL_MASK | RADEON_DAC_BLANKING);
    703 	v |= RADEON_DAC_MASK_ALL | RADEON_DAC_8BIT_EN;
    704 	PUT32(sc, RADEON_DAC_CNTL, v);
    705 	PRINTREG(RADEON_DAC_CNTL);
    706 
    707 	/* XXX: this may need more investigation */
    708 	PUT32(sc, RADEON_TV_DAC_CNTL, 0x00280203);
    709 	PRINTREG(RADEON_TV_DAC_CNTL);
    710 
    711 	/* enable TMDS */
    712 	SET32(sc, RADEON_FP_GEN_CNTL,
    713 	    RADEON_FP_TMDS_EN |
    714 		RADEON_FP_CRTC_DONT_SHADOW_VPAR |
    715 		RADEON_FP_CRTC_DONT_SHADOW_HEND);
    716 	/*
    717 	 * XXX
    718 	 * no idea why this is necessary - if I do not clear this bit on my
    719 	 * iBook G4 the screen remains black, even though it's already clear.
    720 	 * It needs to be set on my Sun XVR-100 for the DVI port to work
    721 	 * TODO:
    722 	 * see if this is still necessary now that CRTCs, DACs and outputs are
    723 	 * getting wired up in a halfway sane way
    724 	 */
    725 	if (sc->sc_fp_gen_cntl & RADEON_FP_SEL_CRTC2) {
    726 		SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    727 	} else {
    728 		CLR32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    729 	}
    730 
    731 	/*
    732 	 * we use bus_space_map instead of pci_mapreg, because we don't
    733 	 * need the full aperature space.  no point in wasting virtual
    734 	 * address space we don't intend to use, right?
    735 	 */
    736 	if ((sc->sc_memsz < (4096 * 1024)) ||
    737 	    (pci_mapreg_info(sc->sc_pc, sc->sc_pt, RADEON_MAPREG_VRAM,
    738 		PCI_MAPREG_TYPE_MEM, &sc->sc_memaddr, &bsz, NULL) != 0) ||
    739 	    (bsz < sc->sc_memsz)) {
    740 		sc->sc_memsz = 0;
    741 		aprint_error("%s: Bad frame buffer configuration\n",
    742 		    XNAME(sc));
    743 		goto error;
    744 	}
    745 
    746 	/* 64 MB should be enough -- more just wastes map entries */
    747 	if (sc->sc_memsz > (64 << 20))
    748 		sc->sc_memsz = (64 << 20);
    749 
    750 	sc->sc_memt = pa->pa_memt;
    751 	if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
    752 		BUS_SPACE_MAP_LINEAR, &sc->sc_memh) != 0) {
    753 		sc->sc_memsz = 0;
    754 		aprint_error("%s: Unable to map frame buffer\n", XNAME(sc));
    755 		goto error;
    756 	}
    757 
    758 	aprint_normal("%s: %d MB aperture at 0x%08x, "
    759 	    "%d KB registers at 0x%08x\n", XNAME(sc),
    760 	    (int)sc->sc_memsz >> 20, (unsigned)sc->sc_memaddr,
    761 	    (int)sc->sc_regsz >> 10, (unsigned)sc->sc_regaddr);
    762 
    763 	/* setup default video mode from devprop (allows PROM override) */
    764 	sc->sc_defaultmode = radeonfb_default_mode;
    765 	if (prop_dictionary_get_cstring_nocopy(device_properties(sc->sc_dev),
    766 	    "videomode", &mptr)) {
    767 
    768 		strncpy(sc->sc_modebuf, mptr, sizeof(sc->sc_modebuf));
    769 		sc->sc_defaultmode = sc->sc_modebuf;
    770 	}
    771 
    772 	/* initialize some basic display parameters */
    773 	for (i = 0; i < sc->sc_ndisplays; i++) {
    774 		struct radeonfb_display *dp = &sc->sc_displays[i];
    775 		struct rasops_info *ri;
    776 		long defattr;
    777 		struct wsemuldisplaydev_attach_args aa;
    778 
    779 		/*
    780 		 * Figure out how many "displays" (desktops) we are going to
    781 		 * support.  If more than one, then each CRTC gets its own
    782 		 * programming.
    783 		 *
    784 		 * XXX: this code needs to change to support mergedfb.
    785 		 * XXX: would be nice to allow this to be overridden
    786 		 */
    787 		if (HAS_CRTC2(sc) && (sc->sc_ndisplays == 1)) {
    788 			DPRINTF(("dual crtcs!\n"));
    789 			dp->rd_ncrtcs = 2;
    790 			dp->rd_crtcs[0].rc_port =
    791 			    &sc->sc_ports[0];
    792 			dp->rd_crtcs[0].rc_number = sc->sc_ports[0].rp_number;
    793 			dp->rd_crtcs[1].rc_port =
    794 			    &sc->sc_ports[1];
    795 			dp->rd_crtcs[1].rc_number = sc->sc_ports[1].rp_number;
    796 		} else {
    797 			dp->rd_ncrtcs = 1;
    798 			dp->rd_crtcs[0].rc_port =
    799 			    &sc->sc_ports[i];
    800 			dp->rd_crtcs[0].rc_number = sc->sc_ports[i].rp_number;
    801 		}
    802 
    803 		dp->rd_softc = sc;
    804 		dp->rd_wsmode = WSDISPLAYIO_MODE_EMUL;
    805 		dp->rd_bg = WS_DEFAULT_BG;
    806 		dp->rd_bpp = RADEONFB_DEFAULT_DEPTH;	/* XXX */
    807 
    808 		/* for text mode, we pick a resolution that won't
    809 		 * require panning */
    810 		radeonfb_pickres(dp, &dp->rd_virtx, &dp->rd_virty, 0);
    811 
    812 		aprint_normal("%s: display %d: "
    813 		    "initial virtual resolution %dx%d at %d bpp\n",
    814 		    XNAME(sc), i, dp->rd_virtx, dp->rd_virty, dp->rd_bpp);
    815 
    816 		/* now select the *video mode* that we will use */
    817 		for (j = 0; j < dp->rd_ncrtcs; j++) {
    818 			const struct videomode *vmp;
    819 			vmp = radeonfb_port_mode(sc, dp->rd_crtcs[j].rc_port,
    820 			    dp->rd_virtx, dp->rd_virty);
    821 
    822 			/*
    823 			 * virtual resolution should be at least as high as
    824 			 * physical
    825 			 */
    826 			if (dp->rd_virtx < vmp->hdisplay ||
    827 			    dp->rd_virty < vmp->vdisplay) {
    828 				dp->rd_virtx = vmp->hdisplay;
    829 				dp->rd_virty = vmp->vdisplay;
    830 			}
    831 
    832 			dp->rd_crtcs[j].rc_videomode = *vmp;
    833 			printf("%s: port %d: physical %dx%d %dHz\n",
    834 			    XNAME(sc), j, vmp->hdisplay, vmp->vdisplay,
    835 			    DIVIDE(DIVIDE(vmp->dot_clock * 1000,
    836 				       vmp->htotal), vmp->vtotal));
    837 		}
    838 
    839 		/* N.B.: radeon wants 64-byte aligned stride */
    840 		dp->rd_stride = dp->rd_virtx * dp->rd_bpp / 8;
    841 		dp->rd_stride = ROUNDUP(dp->rd_stride, RADEON_STRIDEALIGN);
    842 		DPRINTF(("stride: %d\n", dp->rd_stride));
    843 
    844 		dp->rd_offset = sc->sc_fboffset * i;
    845 		dp->rd_fbptr = (vaddr_t)bus_space_vaddr(sc->sc_memt,
    846 		    sc->sc_memh) + dp->rd_offset;
    847 		dp->rd_curoff = sc->sc_fbsize;
    848 		dp->rd_curptr = dp->rd_fbptr + dp->rd_curoff;
    849 
    850 		DPRINTF(("fpbtr = %p\n", (void *)dp->rd_fbptr));
    851 
    852 		switch (dp->rd_bpp) {
    853 		case 8:
    854 			dp->rd_format = 2;
    855 			break;
    856 		case 32:
    857 			dp->rd_format = 6;
    858 			break;
    859 		default:
    860 			aprint_error("%s: bad depth %d\n", XNAME(sc),
    861 			    dp->rd_bpp);
    862 			goto error;
    863 		}
    864 
    865 		DPRINTF(("init engine\n"));
    866 		/* XXX: this seems suspicious - per display engine
    867 		   initialization? */
    868 		radeonfb_engine_init(dp);
    869 
    870 		/* copy the template into place */
    871 		dp->rd_wsscreens_storage[0] = radeonfb_stdscreen;
    872 		dp->rd_wsscreens = dp->rd_wsscreens_storage;
    873 
    874 		/* and make up the list */
    875 		dp->rd_wsscreenlist.nscreens = 1;
    876 		dp->rd_wsscreenlist.screens = (void *)&dp->rd_wsscreens;
    877 
    878 		vcons_init(&dp->rd_vd, dp, dp->rd_wsscreens,
    879 		    &radeonfb_accessops);
    880 
    881 		dp->rd_vd.init_screen = radeonfb_init_screen;
    882 
    883 #ifdef RADEONFB_DEBUG
    884 		dp->rd_virty -= 200;
    885 #endif
    886 
    887 		dp->rd_console = 0;
    888 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
    889 		    "is_console", &dp->rd_console);
    890 
    891 		dp->rd_vscreen.scr_flags |= VCONS_SCREEN_IS_STATIC;
    892 
    893 
    894 		vcons_init_screen(&dp->rd_vd, &dp->rd_vscreen,
    895 		    dp->rd_console, &defattr);
    896 
    897 		ri = &dp->rd_vscreen.scr_ri;
    898 
    899 		/* clear the screen */
    900 		rasops_unpack_attr(defattr, &fg, &bg, &ul);
    901 		radeonfb_rectfill(dp, 0, 0, ri->ri_width, ri->ri_height,
    902 		    ri->ri_devcmap[bg & 0xf]);
    903 
    904 		dp->rd_wsscreens->textops = &ri->ri_ops;
    905 		dp->rd_wsscreens->capabilities = ri->ri_caps;
    906 		dp->rd_wsscreens->nrows = ri->ri_rows;
    907 		dp->rd_wsscreens->ncols = ri->ri_cols;
    908 
    909 #ifdef SPLASHSCREEN
    910 		dp->rd_splash.si_depth = ri->ri_depth;
    911 		dp->rd_splash.si_bits = ri->ri_bits;
    912 		dp->rd_splash.si_hwbits = ri->ri_hwbits;
    913 		dp->rd_splash.si_width = ri->ri_width;
    914 		dp->rd_splash.si_height = ri->ri_height;
    915 		dp->rd_splash.si_stride = ri->ri_stride;
    916 		dp->rd_splash.si_fillrect = NULL;
    917 #endif
    918 		dp->rd_gc.gc_bitblt = radeonfb_bitblt;
    919 		dp->rd_gc.gc_rectfill = radeonfb_rectfill_a;
    920 		dp->rd_gc.gc_rop = RADEON_ROP3_S;
    921 		dp->rd_gc.gc_blitcookie = dp;
    922 		glyphcache_init(&dp->rd_gc, dp->rd_virty + 4,
    923 		    (0x800000 / dp->rd_stride) - (dp->rd_virty + 4),
    924 		    dp->rd_virtx,
    925 		    ri->ri_font->fontwidth,
    926 		    ri->ri_font->fontheight,
    927 		    defattr);
    928 		if (dp->rd_console) {
    929 
    930 			radeonfb_modeswitch(dp);
    931 			wsdisplay_cnattach(dp->rd_wsscreens, ri, 0, 0,
    932 			    defattr);
    933 #ifdef SPLASHSCREEN
    934 			if (splash_render(&dp->rd_splash,
    935 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
    936 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    937 			else
    938 #endif
    939 				vcons_replay_msgbuf(&dp->rd_vscreen);
    940 		} else {
    941 
    942 			/*
    943 			 * since we're not the console we can postpone
    944 			 * the rest until someone actually allocates a
    945 			 * screen for us.  but we do clear the screen
    946 			 * at least.
    947 			 */
    948 			memset(ri->ri_bits, 0, 1024);
    949 
    950 			radeonfb_modeswitch(dp);
    951 #ifdef SPLASHSCREEN
    952 			if (splash_render(&dp->rd_splash,
    953 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
    954 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    955 #endif
    956 		}
    957 
    958 		aa.console = dp->rd_console;
    959 		aa.scrdata = &dp->rd_wsscreenlist;
    960 		aa.accessops = &radeonfb_accessops;
    961 		aa.accesscookie = &dp->rd_vd;
    962 
    963 		config_found(sc->sc_dev, &aa, wsemuldisplaydevprint);
    964 
    965 		radeonfb_blank(dp, 0);
    966 
    967 		/* Initialise delayed lvds operations for backlight. */
    968 		callout_init(&dp->rd_bl_lvds_co, 0);
    969 		callout_setfunc(&dp->rd_bl_lvds_co,
    970 				radeonfb_lvds_callout, dp);
    971 		dp->rd_bl_on = 1;
    972 		dp->rd_bl_level = radeonfb_get_backlight(dp);
    973 		radeonfb_set_backlight(dp, dp->rd_bl_level);
    974 	}
    975 
    976 	/*
    977 	 * if we have console output via firmware like on sparc64 it may
    978 	 * interfere with DAC programming so program the palette again
    979 	 * here after we took over
    980 	 */
    981 	radeonfb_init_palette(sc, 0);
    982 	if (HAS_CRTC2(sc)) {
    983 		radeonfb_init_palette(sc, 1);
    984 		CLR32(sc, RADEON_CRTC2_GEN_CNTL, RADEON_CRTC2_DISP_DIS);
    985 	}
    986 	CLR32(sc, RADEON_CRTC_EXT_CNTL, RADEON_CRTC_DISPLAY_DIS);
    987 	SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_FPON);
    988 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_UP,
    989 	    radeonfb_brightness_up, TRUE);
    990 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_DOWN,
    991 	    radeonfb_brightness_down, TRUE);
    992 
    993 	config_found_ia(dev, "drm", aux, radeonfb_drm_print);
    994 
    995 	PRINTREG(RADEON_CRTC_EXT_CNTL);
    996 	PRINTREG(RADEON_CRTC_GEN_CNTL);
    997 	PRINTREG(RADEON_CRTC2_GEN_CNTL);
    998 	PRINTREG(RADEON_DISP_OUTPUT_CNTL);
    999 	PRINTREG(RADEON_DAC_CNTL2);
   1000 	PRINTREG(RADEON_FP_GEN_CNTL);
   1001 	PRINTREG(RADEON_FP2_GEN_CNTL);
   1002 
   1003 	return;
   1004 
   1005 error:
   1006 	if (sc->sc_biossz)
   1007 		free(sc->sc_bios, M_DEVBUF);
   1008 
   1009 	if (sc->sc_regsz)
   1010 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
   1011 
   1012 	if (sc->sc_memsz)
   1013 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
   1014 }
   1015 
   1016 static void
   1017 radeonfb_map(struct radeonfb_softc *sc)
   1018 {
   1019 	if (!sc->sc_mapped) {
   1020 		if (bus_space_map(sc->sc_regt, sc->sc_regaddr, sc->sc_regsz, 0,
   1021 		    &sc->sc_regh) != 0) {
   1022 			aprint_error_dev(sc->sc_dev,
   1023 			    "unable to map registers!\n");
   1024 			return;
   1025 		}
   1026 		if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
   1027 		    BUS_SPACE_MAP_LINEAR, &sc->sc_memh) != 0) {
   1028 			sc->sc_memsz = 0;
   1029 			aprint_error_dev(sc->sc_dev,
   1030 			    "Unable to map frame buffer\n");
   1031 			return;
   1032 		}
   1033 		sc->sc_mapped = TRUE;
   1034 	}
   1035 }
   1036 
   1037 static void
   1038 radeonfb_unmap(struct radeonfb_softc *sc)
   1039 {
   1040 	if (sc->sc_mapped) {
   1041 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
   1042 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
   1043 		sc->sc_mapped = FALSE;
   1044 	}
   1045 }
   1046 
   1047 static int
   1048 radeonfb_drm_print(void *aux, const char *pnp)
   1049 {
   1050 	if (pnp)
   1051 		aprint_normal("drm at %s", pnp);
   1052 	return (UNCONF);
   1053 }
   1054 
   1055 int
   1056 radeonfb_ioctl(void *v, void *vs,
   1057     unsigned long cmd, void *d, int flag, struct lwp *l)
   1058 {
   1059 	struct vcons_data	*vd;
   1060 	struct radeonfb_display	*dp;
   1061 	struct radeonfb_softc	*sc;
   1062 	struct wsdisplay_param  *param;
   1063 
   1064 	vd = (struct vcons_data *)v;
   1065 	dp = (struct radeonfb_display *)vd->cookie;
   1066 	sc = dp->rd_softc;
   1067 
   1068 	switch (cmd) {
   1069 	case WSDISPLAYIO_GTYPE:
   1070 		*(unsigned *)d = WSDISPLAY_TYPE_PCIMISC;
   1071 		return 0;
   1072 
   1073 	case WSDISPLAYIO_GINFO:
   1074 		if (vd->active != NULL) {
   1075 			struct wsdisplay_fbinfo *fb;
   1076 			fb = (struct wsdisplay_fbinfo *)d;
   1077 			fb->width = dp->rd_virtx;
   1078 			fb->height = dp->rd_virty;
   1079 			fb->depth = dp->rd_bpp;
   1080 			fb->cmsize = 256;
   1081 			return 0;
   1082 		} else
   1083 			return ENODEV;
   1084 	case WSDISPLAYIO_GVIDEO:
   1085 		if (radeonfb_isblank(dp))
   1086 			*(unsigned *)d = WSDISPLAYIO_VIDEO_OFF;
   1087 		else
   1088 			*(unsigned *)d = WSDISPLAYIO_VIDEO_ON;
   1089 		return 0;
   1090 
   1091 	case WSDISPLAYIO_SVIDEO:
   1092 		radeonfb_blank(dp,
   1093 		    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_OFF));
   1094 		return 0;
   1095 
   1096 	case WSDISPLAYIO_GETCMAP:
   1097 #if 0
   1098 		if (dp->rd_bpp == 8)
   1099 			return radeonfb_getcmap(sc,
   1100 			    (struct wsdisplay_cmap *)d);
   1101 #endif
   1102 		return EINVAL;
   1103 
   1104 	case WSDISPLAYIO_PUTCMAP:
   1105 #if 0
   1106 		if (dp->rd_bpp == 8)
   1107 			return radeonfb_putcmap(sc,
   1108 			    (struct wsdisplay_cmap *)d);
   1109 #endif
   1110 		return EINVAL;
   1111 
   1112 	case WSDISPLAYIO_LINEBYTES:
   1113 		*(unsigned *)d = dp->rd_stride;
   1114 		return 0;
   1115 
   1116 	case WSDISPLAYIO_SMODE:
   1117 		if (*(int *)d != dp->rd_wsmode) {
   1118 			dp->rd_wsmode = *(int *)d;
   1119 			if ((dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) &&
   1120 			    (dp->rd_vd.active)) {
   1121 			    	radeonfb_map(sc);
   1122 				radeonfb_engine_init(dp);
   1123 				glyphcache_wipe(&dp->rd_gc);
   1124 				radeonfb_init_palette(sc, dp == &sc->sc_displays[0] ? 0 : 1);
   1125 				radeonfb_modeswitch(dp);
   1126 				vcons_redraw_screen(dp->rd_vd.active);
   1127 			} else {
   1128 				radeonfb_unmap(sc);
   1129 			}
   1130 		}
   1131 		return 0;
   1132 
   1133 	case WSDISPLAYIO_GCURMAX:
   1134 		((struct wsdisplay_curpos *)d)->x = RADEON_CURSORMAXX;
   1135 		((struct wsdisplay_curpos *)d)->y = RADEON_CURSORMAXY;
   1136 		return 0;
   1137 
   1138 	case WSDISPLAYIO_SCURSOR:
   1139 		return radeonfb_set_cursor(dp, (struct wsdisplay_cursor *)d);
   1140 
   1141 	case WSDISPLAYIO_GCURSOR:
   1142 		return EPASSTHROUGH;
   1143 
   1144 	case WSDISPLAYIO_GCURPOS:
   1145 		((struct wsdisplay_curpos *)d)->x = dp->rd_cursor.rc_pos.x;
   1146 		((struct wsdisplay_curpos *)d)->y = dp->rd_cursor.rc_pos.y;
   1147 		return 0;
   1148 
   1149 	case WSDISPLAYIO_SCURPOS:
   1150 		return radeonfb_set_curpos(dp, (struct wsdisplay_curpos *)d);
   1151 
   1152 	case WSDISPLAYIO_SSPLASH:
   1153 #if defined(SPLASHSCREEN)
   1154 		if (*(int *)d == 1) {
   1155 			SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
   1156 			splash_render(&dp->rd_splash,
   1157 			    SPLASH_F_CENTER|SPLASH_F_FILL);
   1158 		} else
   1159 			SCREEN_ENABLE_DRAWING(&dp->rd_vscreen);
   1160 		return 0;
   1161 #else
   1162 		return ENODEV;
   1163 #endif
   1164 	case WSDISPLAYIO_GETPARAM:
   1165 		param = (struct wsdisplay_param *)d;
   1166 		switch (param->param) {
   1167 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
   1168 			param->min = 0;
   1169 			param->max = 255;
   1170 			param->curval = dp->rd_bl_level;
   1171 			return 0;
   1172 		case WSDISPLAYIO_PARAM_BACKLIGHT:
   1173 			param->min = 0;
   1174 			param->max = RADEONFB_BACKLIGHT_MAX;
   1175 			param->curval = dp->rd_bl_on;
   1176 			return 0;
   1177 		}
   1178 		return EPASSTHROUGH;
   1179 
   1180 	case WSDISPLAYIO_SETPARAM:
   1181 		param = (struct wsdisplay_param *)d;
   1182 		switch (param->param) {
   1183 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
   1184 			radeonfb_set_backlight(dp, param->curval);
   1185 			return 0;
   1186 		case WSDISPLAYIO_PARAM_BACKLIGHT:
   1187 			radeonfb_switch_backlight(dp,  param->curval);
   1188 			return 0;
   1189 		}
   1190 		return EPASSTHROUGH;
   1191 
   1192 	/* PCI config read/write passthrough. */
   1193 	case PCI_IOC_CFGREAD:
   1194 	case PCI_IOC_CFGWRITE:
   1195 		return pci_devioctl(sc->sc_pc, sc->sc_pt, cmd, d, flag, l);
   1196 
   1197 	case WSDISPLAYIO_GET_BUSID:
   1198 		return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc,
   1199 		    sc->sc_pt, d);
   1200 
   1201 	case WSDISPLAYIO_GET_EDID: {
   1202 		struct wsdisplayio_edid_info *ei = d;
   1203 		return wsdisplayio_get_edid(sc->sc_dev, ei);
   1204 	}
   1205 
   1206 	default:
   1207 		return EPASSTHROUGH;
   1208 	}
   1209 }
   1210 
   1211 paddr_t
   1212 radeonfb_mmap(void *v, void *vs, off_t offset, int prot)
   1213 {
   1214 	struct vcons_data	*vd;
   1215 	struct radeonfb_display	*dp;
   1216 	struct radeonfb_softc	*sc;
   1217 	paddr_t			pa;
   1218 
   1219 	vd = (struct vcons_data *)v;
   1220 	dp = (struct radeonfb_display *)vd->cookie;
   1221 	sc = dp->rd_softc;
   1222 
   1223 	/* XXX: note that we don't allow mapping of registers right now */
   1224 	/* XXX: this means that the XFree86 radeon driver won't work */
   1225 	if ((offset >= 0) && (offset < (dp->rd_virty * dp->rd_stride))) {
   1226 		pa = bus_space_mmap(sc->sc_memt,
   1227 		    sc->sc_memaddr + dp->rd_offset + offset, 0,
   1228 		    prot, BUS_SPACE_MAP_LINEAR);
   1229 		return pa;
   1230 	}
   1231 
   1232 #ifdef RADEONFB_MMAP_BARS
   1233 	/*
   1234 	 * restrict all other mappings to processes with superuser privileges
   1235 	 * or the kernel itself
   1236 	 */
   1237 	if (kauth_authorize_machdep(kauth_cred_get(), KAUTH_MACHDEP_UNMANAGEDMEM,
   1238 	    NULL, NULL, NULL, NULL) != 0) {
   1239 		aprint_error_dev(sc->sc_dev, "mmap() rejected.\n");
   1240 		return -1;
   1241 	}
   1242 
   1243 	if ((offset >= sc->sc_regaddr) &&
   1244 	    (offset < sc->sc_regaddr + sc->sc_regsz)) {
   1245 		return bus_space_mmap(sc->sc_regt, offset, 0, prot,
   1246 		    BUS_SPACE_MAP_LINEAR);
   1247 	}
   1248 
   1249 	if ((offset >= sc->sc_memaddr) &&
   1250 	    (offset < sc->sc_memaddr + sc->sc_memsz)) {
   1251 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1252 		    BUS_SPACE_MAP_LINEAR);
   1253 	}
   1254 
   1255 	if ((offset >= sc->sc_romaddr) &&
   1256 	    (offset < sc->sc_romaddr + sc->sc_romsz)) {
   1257 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1258 		    BUS_SPACE_MAP_LINEAR);
   1259 	}
   1260 
   1261 #ifdef PCI_MAGIC_IO_RANGE
   1262 	/* allow mapping of IO space */
   1263 	if ((offset >= PCI_MAGIC_IO_RANGE) &&
   1264 	    (offset < PCI_MAGIC_IO_RANGE + 0x10000)) {
   1265 		pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE,
   1266 		    0, prot, 0);
   1267 		return pa;
   1268 	}
   1269 #endif /* PCI_MAGIC_IO_RANGE */
   1270 
   1271 #endif /* RADEONFB_MMAP_BARS */
   1272 
   1273 	return -1;
   1274 }
   1275 
   1276 static void
   1277 radeonfb_loadbios(struct radeonfb_softc *sc, const struct pci_attach_args *pa)
   1278 {
   1279 	bus_space_tag_t		romt;
   1280 	bus_space_handle_t	romh, biosh;
   1281 	bus_size_t		romsz;
   1282 	bus_addr_t		ptr;
   1283 
   1284 	if (pci_mapreg_map(pa, PCI_MAPREG_ROM, PCI_MAPREG_TYPE_ROM,
   1285 		BUS_SPACE_MAP_PREFETCHABLE, &romt, &romh, NULL, &romsz) != 0) {
   1286 		aprint_verbose("%s: unable to map BIOS!\n", XNAME(sc));
   1287 		return;
   1288 	}
   1289 
   1290 	pci_find_rom(pa, romt, romh, PCI_ROM_CODE_TYPE_X86, &biosh,
   1291 	    &sc->sc_biossz);
   1292 	if (sc->sc_biossz == 0) {
   1293 		aprint_verbose("%s: Video BIOS not present\n", XNAME(sc));
   1294 		return;
   1295 	}
   1296 
   1297 	sc->sc_bios = malloc(sc->sc_biossz, M_DEVBUF, M_WAITOK);
   1298 	bus_space_read_region_1(romt, biosh, 0, sc->sc_bios, sc->sc_biossz);
   1299 
   1300 	/* unmap the PCI expansion rom */
   1301 	bus_space_unmap(romt, romh, romsz);
   1302 
   1303 	/* turn off rom decoder now */
   1304 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM,
   1305 	    pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM) &
   1306 	    ~PCI_MAPREG_ROM_ENABLE);
   1307 
   1308 	ptr = GETBIOS16(sc, 0x48);
   1309 	if ((GETBIOS32(sc, ptr + 4) == 0x41544f4d /* "ATOM" */) ||
   1310 	    (GETBIOS32(sc, ptr + 4) == 0x4d4f5441 /* "MOTA" */)) {
   1311 		sc->sc_flags |= RFB_ATOM;
   1312 	}
   1313 
   1314 	aprint_verbose("%s: Found %d KB %s BIOS\n", XNAME(sc),
   1315 	    (unsigned)sc->sc_biossz >> 10, IS_ATOM(sc) ? "ATOM" : "Legacy");
   1316 }
   1317 
   1318 
   1319 uint32_t
   1320 radeonfb_get32(struct radeonfb_softc *sc, uint32_t reg)
   1321 {
   1322 
   1323 	return bus_space_read_4(sc->sc_regt, sc->sc_regh, reg);
   1324 }
   1325 
   1326 void
   1327 radeonfb_put32(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1328 {
   1329 
   1330 	bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, val);
   1331 }
   1332 
   1333 void
   1334 radeonfb_put32s(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1335 {
   1336 
   1337 	bus_space_write_stream_4(sc->sc_regt, sc->sc_regh, reg, val);
   1338 }
   1339 
   1340 void
   1341 radeonfb_mask32(struct radeonfb_softc *sc, uint32_t reg,
   1342     uint32_t andmask, uint32_t ormask)
   1343 {
   1344 	int		s;
   1345 	uint32_t	val;
   1346 
   1347 	s = splhigh();
   1348 	val = radeonfb_get32(sc, reg);
   1349 	val = (val & andmask) | ormask;
   1350 	radeonfb_put32(sc, reg, val);
   1351 	splx(s);
   1352 }
   1353 
   1354 uint32_t
   1355 radeonfb_getindex(struct radeonfb_softc *sc, uint32_t idx)
   1356 {
   1357 	int		s;
   1358 	uint32_t	val;
   1359 
   1360 	s = splhigh();
   1361 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1362 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1363 	splx(s);
   1364 
   1365 	return (val);
   1366 }
   1367 
   1368 void
   1369 radeonfb_putindex(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1370 {
   1371 	int	s;
   1372 
   1373 	s = splhigh();
   1374 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1375 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1376 	splx(s);
   1377 }
   1378 
   1379 void
   1380 radeonfb_maskindex(struct radeonfb_softc *sc, uint32_t idx,
   1381     uint32_t andmask, uint32_t ormask)
   1382 {
   1383 	int		s;
   1384 	uint32_t	val;
   1385 
   1386 	s = splhigh();
   1387 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1388 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1389 	val = (val & andmask) | ormask;
   1390 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1391 	splx(s);
   1392 }
   1393 
   1394 uint32_t
   1395 radeonfb_getpll(struct radeonfb_softc *sc, uint32_t idx)
   1396 {
   1397 	int		s;
   1398 	uint32_t	val;
   1399 
   1400 	s = splhigh();
   1401 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f));
   1402 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1403 	if (HAS_R300CG(sc))
   1404 		radeonfb_r300cg_workaround(sc);
   1405 	splx(s);
   1406 
   1407 	return (val);
   1408 }
   1409 
   1410 void
   1411 radeonfb_putpll(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1412 {
   1413 	int	s;
   1414 
   1415 	s = splhigh();
   1416 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1417 	    RADEON_PLL_WR_EN);
   1418 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1419 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1420 	splx(s);
   1421 }
   1422 
   1423 void
   1424 radeonfb_maskpll(struct radeonfb_softc *sc, uint32_t idx,
   1425     uint32_t andmask, uint32_t ormask)
   1426 {
   1427 	int		s;
   1428 	uint32_t	val;
   1429 
   1430 	s = splhigh();
   1431 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1432 		RADEON_PLL_WR_EN);
   1433 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1434 	val = (val & andmask) | ormask;
   1435 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1436 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1437 	splx(s);
   1438 }
   1439 
   1440 int
   1441 radeonfb_scratch_test(struct radeonfb_softc *sc, int reg, uint32_t v)
   1442 {
   1443 	uint32_t	saved;
   1444 
   1445 	saved = GET32(sc, reg);
   1446 	PUT32(sc, reg, v);
   1447 	if (GET32(sc, reg) != v) {
   1448 		return -1;
   1449 	}
   1450 	PUT32(sc, reg, saved);
   1451 	return 0;
   1452 }
   1453 
   1454 uintmax_t
   1455 radeonfb_getprop_num(struct radeonfb_softc *sc, const char *name,
   1456     uintmax_t defval)
   1457 {
   1458 	prop_number_t	pn;
   1459 	pn = prop_dictionary_get(device_properties(sc->sc_dev), name);
   1460 	if (pn == NULL) {
   1461 		return defval;
   1462 	}
   1463 	KASSERT(prop_object_type(pn) == PROP_TYPE_NUMBER);
   1464 	return (prop_number_integer_value(pn));
   1465 }
   1466 
   1467 int
   1468 radeonfb_getclocks(struct radeonfb_softc *sc)
   1469 {
   1470 	bus_addr_t	ptr;
   1471 	int		refclk = 0;
   1472 	int		refdiv = 0;
   1473 	int		minpll = 0;
   1474 	int		maxpll = 0;
   1475 
   1476 	/* load initial property values if port/board provides them */
   1477 	refclk = radeonfb_getprop_num(sc, "refclk", 0) & 0xffff;
   1478 	refdiv = radeonfb_getprop_num(sc, "refdiv", 0) & 0xffff;
   1479 	minpll = radeonfb_getprop_num(sc, "minpll", 0) & 0xffffffffU;
   1480 	maxpll = radeonfb_getprop_num(sc, "maxpll", 0) & 0xffffffffU;
   1481 
   1482 	PRINTPLL(RADEON_PPLL_REF_DIV);
   1483 	PRINTPLL(RADEON_PPLL_DIV_0);
   1484 	PRINTPLL(RADEON_PPLL_DIV_1);
   1485 	PRINTPLL(RADEON_PPLL_DIV_2);
   1486 	PRINTPLL(RADEON_PPLL_DIV_3);
   1487 	PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   1488 	PRINTPLL(RADEON_P2PLL_REF_DIV);
   1489 	PRINTPLL(RADEON_P2PLL_DIV_0);
   1490 
   1491 	if (refclk && refdiv && minpll && maxpll)
   1492 		goto dontprobe;
   1493 
   1494 	if (!sc->sc_biossz) {
   1495 		/* no BIOS */
   1496 		aprint_verbose("%s: No video BIOS, using default clocks\n",
   1497 		    XNAME(sc));
   1498 		if (IS_IGP(sc))
   1499 			refclk = refclk ? refclk : 1432;
   1500 		else
   1501 			refclk = refclk ? refclk : 2700;
   1502 		refdiv = refdiv ? refdiv : 12;
   1503 		minpll = minpll ? minpll : 12500;
   1504 		/* XXX
   1505 		 * Need to check if the firmware or something programmed a
   1506 		 * higher value than this, and if so, bump it.
   1507 		 * The RV280 in my iBook is unhappy if the PLL input is less
   1508 		 * than 360MHz
   1509 		 */
   1510 		maxpll = maxpll ? maxpll : 40000/*35000*/;
   1511 	} else if (IS_ATOM(sc)) {
   1512 		/* ATOM BIOS */
   1513 		ptr = GETBIOS16(sc, 0x48);
   1514 		ptr = GETBIOS16(sc, ptr + 32);	/* aka MasterDataStart */
   1515 		ptr = GETBIOS16(sc, ptr + 12);	/* pll info block */
   1516 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 82);
   1517 		minpll = minpll ? minpll : GETBIOS16(sc, ptr + 78);
   1518 		maxpll = maxpll ? maxpll : GETBIOS16(sc, ptr + 32);
   1519 		/*
   1520 		 * ATOM BIOS doesn't supply a reference divider, so we
   1521 		 * have to probe for it.
   1522 		 */
   1523 		if (refdiv < 2)
   1524 			refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1525 			    RADEON_PPLL_REF_DIV_MASK;
   1526 		/*
   1527 		 * if probe is zero, just assume one that should work
   1528 		 * for most parts
   1529 		 */
   1530 		if (refdiv < 2)
   1531 			refdiv = 12;
   1532 
   1533 	} else {
   1534 		uint32_t tmp = GETPLL(sc, RADEON_PPLL_REF_DIV);
   1535 		/* Legacy BIOS */
   1536 		ptr = GETBIOS16(sc, 0x48);
   1537 		ptr = GETBIOS16(sc, ptr + 0x30);
   1538 		if (IS_R300(sc)) {
   1539 			refdiv = refdiv ? refdiv :
   1540 			    (tmp & R300_PPLL_REF_DIV_ACC_MASK) >>
   1541 			    R300_PPLL_REF_DIV_ACC_SHIFT;
   1542 		} else {
   1543 			refdiv = refdiv ? refdiv :
   1544 			    tmp & RADEON_PPLL_REF_DIV_MASK;
   1545 		}
   1546 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 0x0E);
   1547 		refdiv = refdiv ? refdiv : GETBIOS16(sc, ptr + 0x10);
   1548 		minpll = minpll ? minpll : GETBIOS32(sc, ptr + 0x12);
   1549 		maxpll = maxpll ? maxpll : GETBIOS32(sc, ptr + 0x16);
   1550 	}
   1551 
   1552 
   1553 dontprobe:
   1554 	sc->sc_refclk = refclk * 10;
   1555 	sc->sc_refdiv = refdiv;
   1556 	sc->sc_minpll = minpll * 10;
   1557 	sc->sc_maxpll = maxpll * 10;
   1558 	return 0;
   1559 }
   1560 
   1561 int
   1562 radeonfb_calc_dividers(struct radeonfb_softc *sc, uint32_t dotclock,
   1563     uint32_t *postdivbit, uint32_t *feedbackdiv)
   1564 {
   1565 	int		i;
   1566 	uint32_t	outfreq;
   1567 	int		div;
   1568 
   1569 	DPRINTF(("dot clock: %u\n", dotclock));
   1570 	for (i = 0; (div = radeonfb_dividers[i].divider) != 0; i++) {
   1571 		outfreq = div * dotclock;
   1572 		if ((outfreq >= sc->sc_minpll) &&
   1573 		    (outfreq <= sc->sc_maxpll)) {
   1574 			DPRINTF(("outfreq: %u\n", outfreq));
   1575 			*postdivbit =
   1576 			    ((uint32_t)radeonfb_dividers[i].mask << 16);
   1577 			DPRINTF(("post divider: %d (mask %x)\n", div,
   1578 				    *postdivbit));
   1579 			break;
   1580 		}
   1581 	}
   1582 
   1583 	if (div == 0)
   1584 		return 1;
   1585 
   1586 	*feedbackdiv = DIVIDE(sc->sc_refdiv * outfreq, sc->sc_refclk);
   1587 	DPRINTF(("feedback divider: %d\n", *feedbackdiv));
   1588 	return 0;
   1589 }
   1590 
   1591 #if 0
   1592 #ifdef RADEONFB_DEBUG
   1593 static void
   1594 dump_buffer(const char *pfx, void *buffer, unsigned int size)
   1595 {
   1596 	char		asc[17];
   1597 	unsigned	ptr = (unsigned)buffer;
   1598 	char		*start = (char *)(ptr & ~0xf);
   1599 	char		*end = (char *)(ptr + size);
   1600 
   1601 	end = (char *)(((unsigned)end + 0xf) & ~0xf);
   1602 
   1603 	if (pfx == NULL) {
   1604 		pfx = "";
   1605 	}
   1606 
   1607 	while (start < end) {
   1608 		unsigned offset = (unsigned)start & 0xf;
   1609 		if (offset == 0) {
   1610 			printf("%s%x: ", pfx, (unsigned)start);
   1611 		}
   1612 		if (((unsigned)start < ptr) ||
   1613 		    ((unsigned)start >= (ptr + size))) {
   1614 			printf("  ");
   1615 			asc[offset] = ' ';
   1616 		} else {
   1617 			printf("%02x", *(unsigned char *)start);
   1618 			if ((*start >= ' ') && (*start <= '~')) {
   1619 				asc[offset] = *start;
   1620 			} else {
   1621 				asc[offset] = '.';
   1622 			}
   1623 		}
   1624 		asc[offset + 1] = 0;
   1625 		if (offset % 2) {
   1626 			printf(" ");
   1627 		}
   1628 		if (offset == 15) {
   1629 			printf(" %s\n", asc);
   1630 		}
   1631 		start++;
   1632 	}
   1633 }
   1634 #endif
   1635 #endif
   1636 
   1637 int
   1638 radeonfb_getconnectors(struct radeonfb_softc *sc)
   1639 {
   1640 	int	i;
   1641 	int	found = 0;
   1642 
   1643 	for (i = 0; i < 2; i++) {
   1644 		sc->sc_ports[i].rp_mon_type = RADEON_MT_UNKNOWN;
   1645 		sc->sc_ports[i].rp_ddc_type = RADEON_DDC_NONE;
   1646 		sc->sc_ports[i].rp_dac_type = RADEON_DAC_UNKNOWN;
   1647 		sc->sc_ports[i].rp_conn_type = RADEON_CONN_NONE;
   1648 		sc->sc_ports[i].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1649 	}
   1650 
   1651 	/*
   1652 	 * This logic is borrowed from Xorg's radeon driver.
   1653 	 */
   1654 	if (!sc->sc_biossz)
   1655 		goto nobios;
   1656 
   1657 	if (IS_ATOM(sc)) {
   1658 		/* not done yet */
   1659 	} else {
   1660 		uint16_t	ptr;
   1661 		int		port = 0;
   1662 
   1663 		ptr = GETBIOS16(sc, 0x48);
   1664 		ptr = GETBIOS16(sc, ptr + 0x50);
   1665 		for (i = 1; i < 4; i++) {
   1666 			uint16_t	entry;
   1667 			uint8_t		conn, ddc, dac, tmds;
   1668 
   1669 			/*
   1670 			 * Parse the connector table.  From reading the code,
   1671 			 * it appears to made up of 16-bit entries for each
   1672 			 * connector.  The 16-bits are defined as:
   1673 			 *
   1674 			 * bits 12-15	- connector type (0 == end of table)
   1675 			 * bits 8-11	- DDC type
   1676 			 * bits 5-7	- ???
   1677 			 * bit 4	- TMDS type (1 = EXT, 0 = INT)
   1678 			 * bits 1-3	- ???
   1679 			 * bit 0	- DAC, 1 = TVDAC, 0 = primary
   1680 			 */
   1681 			if (!GETBIOS8(sc, ptr + i * 2) && i > 1)
   1682 				break;
   1683 			entry = GETBIOS16(sc, ptr + i * 2);
   1684 
   1685 			conn = (entry >> 12) & 0xf;
   1686 			ddc = (entry >> 8) & 0xf;
   1687 			dac = (entry & 0x1) ? RADEON_DAC_TVDAC :
   1688 			    RADEON_DAC_PRIMARY;
   1689 			tmds = ((entry >> 4) & 0x1) ? RADEON_TMDS_EXT :
   1690 			    RADEON_TMDS_INT;
   1691 
   1692 			if (conn == RADEON_CONN_NONE)
   1693 				continue;	/* no connector */
   1694 
   1695 			if ((found > 0) &&
   1696 			    (sc->sc_ports[port].rp_ddc_type == ddc)) {
   1697 				/* duplicate entry for same connector */
   1698 				continue;
   1699 			}
   1700 
   1701 			/* internal DDC_DVI port gets priority */
   1702 			if ((ddc == RADEON_DDC_DVI) || (port == 1))
   1703 				port = 0;
   1704 			else
   1705 				port = 1;
   1706 
   1707 			sc->sc_ports[port].rp_ddc_type =
   1708 			    ddc > RADEON_DDC_CRT2 ? RADEON_DDC_NONE : ddc;
   1709 			sc->sc_ports[port].rp_dac_type = dac;
   1710 			sc->sc_ports[port].rp_conn_type =
   1711 			    min(conn, RADEON_CONN_UNSUPPORTED) ;
   1712 
   1713 			sc->sc_ports[port].rp_tmds_type = tmds;
   1714 
   1715 			if ((conn != RADEON_CONN_DVI_I) &&
   1716 			    (conn != RADEON_CONN_DVI_D) &&
   1717 			    (tmds == RADEON_TMDS_INT))
   1718 				sc->sc_ports[port].rp_tmds_type =
   1719 				    RADEON_TMDS_UNKNOWN;
   1720 			sc->sc_ports[port].rp_number = i - 1;
   1721 
   1722 			found += (port + 1);
   1723 		}
   1724 	}
   1725 
   1726 nobios:
   1727 	if (!found) {
   1728 		DPRINTF(("No connector info in BIOS!\n"));
   1729 		if IS_MOBILITY(sc) {
   1730 			/* default, port 0 = internal TMDS, port 1 = CRT */
   1731 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1732 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1733 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1734 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1735 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1736 			sc->sc_ports[0].rp_number = 0;
   1737 
   1738 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1739 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1740 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1741 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1742 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_EXT;
   1743 			sc->sc_ports[1].rp_number = 1;
   1744 		} else {
   1745 			/* default, port 0 = DVI, port 1 = CRT */
   1746 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1747 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1748 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1749 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1750 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1751 			sc->sc_ports[0].rp_number = 1;
   1752 
   1753 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1754 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1755 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1756 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1757 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_EXT;
   1758 			sc->sc_ports[1].rp_number = 0;
   1759 		}
   1760 	}
   1761 
   1762 	/*
   1763 	 * Fixup for RS300/RS350/RS400 chips, that lack a primary DAC.
   1764 	 * these chips should use TVDAC for the VGA port.
   1765 	 */
   1766 	if (HAS_SDAC(sc)) {
   1767 		if (sc->sc_ports[0].rp_conn_type == RADEON_CONN_CRT) {
   1768 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1769 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1770 		} else {
   1771 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_TVDAC;
   1772 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1773 		}
   1774 	} else if (!HAS_CRTC2(sc)) {
   1775 		sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1776 	}
   1777 
   1778 	for (i = 0; i < 2; i++) {
   1779 		char	edid[128];
   1780 		uint8_t	ddc;
   1781 		struct edid_info *eip = &sc->sc_ports[i].rp_edid;
   1782 		prop_data_t edid_data;
   1783 
   1784 		DPRINTF(("Port #%d:\n", i));
   1785 		DPRINTF(("   conn = %d\n", sc->sc_ports[i].rp_conn_type));
   1786 		DPRINTF(("    ddc = %d\n", sc->sc_ports[i].rp_ddc_type));
   1787 		DPRINTF(("    dac = %d\n", sc->sc_ports[i].rp_dac_type));
   1788 		DPRINTF(("   tmds = %d\n", sc->sc_ports[i].rp_tmds_type));
   1789 		DPRINTF(("   crtc = %d\n", sc->sc_ports[i].rp_number));
   1790 
   1791 		sc->sc_ports[i].rp_edid_valid = 0;
   1792 		/* first look for static EDID data */
   1793 		if ((edid_data = prop_dictionary_get(device_properties(
   1794 		    sc->sc_dev), "EDID")) != NULL) {
   1795 
   1796 			aprint_debug_dev(sc->sc_dev, "using static EDID\n");
   1797 			memcpy(edid, prop_data_data_nocopy(edid_data), 128);
   1798 			if (edid_parse(edid, eip) == 0) {
   1799 
   1800 				sc->sc_ports[i].rp_edid_valid = 1;
   1801 			}
   1802 		}
   1803 		/* if we didn't find any we'll try to talk to the monitor */
   1804 		if (sc->sc_ports[i].rp_edid_valid != 1) {
   1805 
   1806 			ddc = sc->sc_ports[i].rp_ddc_type;
   1807 			if (ddc != RADEON_DDC_NONE) {
   1808 				if ((radeonfb_i2c_read_edid(sc, ddc, edid)
   1809 				    == 0) && (edid_parse(edid, eip) == 0)) {
   1810 
   1811 					sc->sc_ports[i].rp_edid_valid = 1;
   1812 #ifdef RADEONFB_DEBUG
   1813 					edid_print(eip);
   1814 #endif
   1815 				}
   1816 			}
   1817 		}
   1818 	}
   1819 
   1820 	return found;
   1821 }
   1822 
   1823 int
   1824 radeonfb_gettmds(struct radeonfb_softc *sc)
   1825 {
   1826 	int	i;
   1827 
   1828 	if (!sc->sc_biossz) {
   1829 		goto nobios;
   1830 	}
   1831 
   1832 	if (IS_ATOM(sc)) {
   1833 		/* XXX: not done yet */
   1834 	} else {
   1835 		uint16_t	ptr;
   1836 		int		n;
   1837 
   1838 		ptr = GETBIOS16(sc, 0x48);
   1839 		ptr = GETBIOS16(sc, ptr + 0x34);
   1840 		DPRINTF(("DFP table revision %d\n", GETBIOS8(sc, ptr)));
   1841 		if (GETBIOS8(sc, ptr) == 3) {
   1842 			/* revision three table */
   1843 			n = GETBIOS8(sc, ptr + 5) + 1;
   1844 			n = min(n, 4);
   1845 
   1846 			memset(sc->sc_tmds_pll, 0, sizeof (sc->sc_tmds_pll));
   1847 			for (i = 0; i < n; i++) {
   1848 				sc->sc_tmds_pll[i].rtp_pll = GETBIOS32(sc,
   1849 				    ptr + i * 10 + 8);
   1850 				sc->sc_tmds_pll[i].rtp_freq = GETBIOS16(sc,
   1851 				    ptr + i * 10 + 0x10);
   1852 				DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1853 					    sc->sc_tmds_pll[i].rtp_freq,
   1854 					    sc->sc_tmds_pll[i].rtp_pll));
   1855 			}
   1856 			return 0;
   1857 		}
   1858 	}
   1859 
   1860 nobios:
   1861 	DPRINTF(("no suitable DFP table present\n"));
   1862 	for (i = 0;
   1863 	     i < sizeof (radeonfb_tmds_pll) / sizeof (radeonfb_tmds_pll[0]);
   1864 	     i++) {
   1865 		int	j;
   1866 
   1867 		if (radeonfb_tmds_pll[i].family != sc->sc_family)
   1868 			continue;
   1869 
   1870 		for (j = 0; j < 4; j++) {
   1871 			sc->sc_tmds_pll[j] = radeonfb_tmds_pll[i].plls[j];
   1872 			DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1873 				    sc->sc_tmds_pll[j].rtp_freq,
   1874 				    sc->sc_tmds_pll[j].rtp_pll));
   1875 		}
   1876 		return 0;
   1877 	}
   1878 
   1879 	return -1;
   1880 }
   1881 
   1882 const struct videomode *
   1883 radeonfb_modelookup(const char *name)
   1884 {
   1885 	int	i;
   1886 
   1887 	for (i = 0; i < videomode_count; i++)
   1888 		if (!strcmp(name, videomode_list[i].name))
   1889 			return &videomode_list[i];
   1890 
   1891 	return NULL;
   1892 }
   1893 
   1894 void
   1895 radeonfb_pllwriteupdate(struct radeonfb_softc *sc, int crtc)
   1896 {
   1897 	if (crtc) {
   1898 		while (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   1899 		    RADEON_P2PLL_ATOMIC_UPDATE_R);
   1900 		SETPLL(sc, RADEON_P2PLL_REF_DIV, RADEON_P2PLL_ATOMIC_UPDATE_W);
   1901 	} else {
   1902 		while (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1903 		    RADEON_PPLL_ATOMIC_UPDATE_R);
   1904 		SETPLL(sc, RADEON_PPLL_REF_DIV, RADEON_PPLL_ATOMIC_UPDATE_W);
   1905 	}
   1906 }
   1907 
   1908 void
   1909 radeonfb_pllwaitatomicread(struct radeonfb_softc *sc, int crtc)
   1910 {
   1911 	int	i;
   1912 
   1913 	for (i = 10000; i; i--) {
   1914 		if (crtc) {
   1915 			if (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   1916 			    RADEON_P2PLL_ATOMIC_UPDATE_R)
   1917 				break;
   1918 		} else {
   1919 			if (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1920 			    RADEON_PPLL_ATOMIC_UPDATE_R)
   1921 				break;
   1922 		}
   1923 	}
   1924 }
   1925 
   1926 void
   1927 radeonfb_program_vclk(struct radeonfb_softc *sc, int dotclock, int crtc)
   1928 {
   1929 	uint32_t	pbit = 0;
   1930 	uint32_t	feed = 0;
   1931 	uint32_t	data, refdiv, div0;
   1932 
   1933 	radeonfb_calc_dividers(sc, dotclock, &pbit, &feed);
   1934 
   1935 	if (crtc == 0) {
   1936 
   1937 		refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV);
   1938 		if (IS_R300(sc)) {
   1939 			refdiv = (refdiv & ~R300_PPLL_REF_DIV_ACC_MASK) |
   1940 			    (sc->sc_refdiv << R300_PPLL_REF_DIV_ACC_SHIFT);
   1941 		} else {
   1942 			refdiv = (refdiv & ~RADEON_PPLL_REF_DIV_MASK) |
   1943 			    sc->sc_refdiv;
   1944 		}
   1945 		div0 = GETPLL(sc, RADEON_PPLL_DIV_0);
   1946 		div0 &= ~(RADEON_PPLL_FB3_DIV_MASK |
   1947 		    RADEON_PPLL_POST3_DIV_MASK);
   1948 		div0 |= pbit;
   1949 		div0 |= (feed & RADEON_PPLL_FB3_DIV_MASK);
   1950 
   1951 		if ((refdiv == GETPLL(sc, RADEON_PPLL_REF_DIV)) &&
   1952 		    (div0 == GETPLL(sc, RADEON_PPLL_DIV_0))) {
   1953 			/*
   1954 			 * nothing to do here, the PLL is already where we
   1955 			 * want it
   1956 			 */
   1957 			PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   1958 			    ~RADEON_PLL_DIV_SEL);
   1959 			aprint_debug_dev(sc->sc_dev, "no need to touch the PLL\n");
   1960 			return;
   1961 		}
   1962 
   1963 		/* alright, we do need to reprogram stuff */
   1964 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   1965 		    RADEON_VCLK_SRC_SEL_CPUCLK,
   1966 		    ~RADEON_VCLK_SRC_SEL_MASK);
   1967 
   1968 		/* put vclk into reset, use atomic updates */
   1969 		SETPLL(sc, RADEON_PPLL_CNTL,
   1970 		    RADEON_PPLL_REFCLK_SEL |
   1971 		    RADEON_PPLL_FBCLK_SEL |
   1972 		    RADEON_PPLL_RESET |
   1973 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   1974 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   1975 
   1976 		/* select clock 0 */
   1977 		PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   1978 		    ~RADEON_PLL_DIV_SEL);
   1979 
   1980 		PUTPLL(sc, RADEON_PPLL_REF_DIV, refdiv);
   1981 
   1982 		/* xf86-video-radeon does this, not sure why */
   1983 		PUTPLL(sc, RADEON_PPLL_DIV_0, div0);
   1984 		PUTPLL(sc, RADEON_PPLL_DIV_0, div0);
   1985 
   1986 		/* use the atomic update */
   1987 		radeonfb_pllwriteupdate(sc, crtc);
   1988 
   1989 		/* and wait for it to complete */
   1990 		radeonfb_pllwaitatomicread(sc, crtc);
   1991 
   1992 		/* program HTOTAL (why?) */
   1993 		PUTPLL(sc, RADEON_HTOTAL_CNTL, 0);
   1994 
   1995 		/* drop reset */
   1996 		CLRPLL(sc, RADEON_PPLL_CNTL,
   1997 		    RADEON_PPLL_RESET | RADEON_PPLL_SLEEP |
   1998 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   1999 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   2000 
   2001 		PRINTPLL(RADEON_PPLL_CNTL);
   2002 		PRINTPLL(RADEON_PPLL_REF_DIV);
   2003 		PRINTPLL(RADEON_PPLL_DIV_3);
   2004 
   2005 		/* give clock time to lock */
   2006 		delay(50000);
   2007 
   2008 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   2009 		    RADEON_VCLK_SRC_SEL_PPLLCLK,
   2010 		    ~RADEON_VCLK_SRC_SEL_MASK);
   2011 
   2012 	} else {
   2013 
   2014 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   2015 		    RADEON_PIX2CLK_SRC_SEL_CPUCLK,
   2016 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   2017 
   2018 		/* put vclk into reset, use atomic updates */
   2019 		SETPLL(sc, RADEON_P2PLL_CNTL,
   2020 		    RADEON_P2PLL_RESET |
   2021 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   2022 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   2023 
   2024 		/* program reference divider */
   2025 		PATCHPLL(sc, RADEON_P2PLL_REF_DIV, sc->sc_refdiv,
   2026 		    ~RADEON_P2PLL_REF_DIV_MASK);
   2027 
   2028 		/* program feedback and post dividers */
   2029 		data = GETPLL(sc, RADEON_P2PLL_DIV_0);
   2030 		data &= ~(RADEON_P2PLL_FB0_DIV_MASK |
   2031 		    RADEON_P2PLL_POST0_DIV_MASK);
   2032 		data |= pbit;
   2033 		data |= (feed & RADEON_P2PLL_FB0_DIV_MASK);
   2034 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   2035 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   2036 
   2037 		PRINTPLL(RADEON_P2PLL_REF_DIV);
   2038 		PRINTPLL(RADEON_P2PLL_DIV_0);
   2039 
   2040 		/* use the atomic update */
   2041 		radeonfb_pllwriteupdate(sc, crtc);
   2042 
   2043 		/* and wait for it to complete */
   2044 		radeonfb_pllwaitatomicread(sc, crtc);
   2045 
   2046 		/* program HTOTAL (why?) */
   2047 		PUTPLL(sc, RADEON_HTOTAL2_CNTL, 0);
   2048 
   2049 		/* drop reset */
   2050 		CLRPLL(sc, RADEON_P2PLL_CNTL,
   2051 		    RADEON_P2PLL_RESET | RADEON_P2PLL_SLEEP |
   2052 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   2053 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   2054 
   2055 		/* allow time for clock to lock */
   2056 		delay(50000);
   2057 
   2058 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   2059 		    RADEON_PIX2CLK_SRC_SEL_P2PLLCLK,
   2060 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   2061 	}
   2062 	PRINTREG(RADEON_CRTC_MORE_CNTL);
   2063 }
   2064 
   2065 void
   2066 radeonfb_modeswitch(struct radeonfb_display *dp)
   2067 {
   2068 	struct radeonfb_softc	*sc = dp->rd_softc;
   2069 	int			i;
   2070 
   2071 	/* blank the display while we switch modes */
   2072 	radeonfb_blank(dp, 1);
   2073 
   2074 #if 0
   2075 	SET32(sc, RADEON_CRTC_EXT_CNTL,
   2076 	    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2077 	    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2078 #endif
   2079 
   2080 	/* these registers might get in the way... */
   2081 	PUT32(sc, RADEON_OVR_CLR, 0);
   2082 	PUT32(sc, RADEON_OVR_WID_LEFT_RIGHT, 0);
   2083 	PUT32(sc, RADEON_OVR_WID_TOP_BOTTOM, 0);
   2084 	PUT32(sc, RADEON_OV0_SCALE_CNTL, 0);
   2085 	PUT32(sc, RADEON_SUBPIC_CNTL, 0);
   2086 	PUT32(sc, RADEON_VIPH_CONTROL, 0);
   2087 	PUT32(sc, RADEON_I2C_CNTL_1, 0);
   2088 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2089 	PUT32(sc, RADEON_CAP0_TRIG_CNTL, 0);
   2090 	PUT32(sc, RADEON_CAP1_TRIG_CNTL, 0);
   2091 	PUT32(sc, RADEON_SURFACE_CNTL, 0);
   2092 
   2093 	for (i = 0; i < dp->rd_ncrtcs; i++)
   2094 		radeonfb_setcrtc(dp, i);
   2095 
   2096 	/* activate the display */
   2097 	radeonfb_blank(dp, 0);
   2098 }
   2099 
   2100 void
   2101 radeonfb_setcrtc(struct radeonfb_display *dp, int index)
   2102 {
   2103 	int			crtc;
   2104 	struct videomode	*mode;
   2105 	struct radeonfb_softc	*sc;
   2106 	struct radeonfb_crtc	*cp;
   2107 	uint32_t		v;
   2108 	uint32_t		gencntl;
   2109 	uint32_t		htotaldisp;
   2110 	uint32_t		hsyncstrt;
   2111 	uint32_t		vtotaldisp;
   2112 	uint32_t		vsyncstrt;
   2113 	uint32_t		fphsyncstrt;
   2114 	uint32_t		fpvsyncstrt;
   2115 	uint32_t		fphtotaldisp;
   2116 	uint32_t		fpvtotaldisp;
   2117 	uint32_t		pitch;
   2118 
   2119 	sc = dp->rd_softc;
   2120 	cp = &dp->rd_crtcs[index];
   2121 	crtc = cp->rc_number;
   2122 	mode = &cp->rc_videomode;
   2123 
   2124 #if 1
   2125 	pitch = dp->rd_stride / dp->rd_bpp;
   2126 #else
   2127 	pitch = (((sc->sc_maxx * sc->sc_maxbpp) + ((sc->sc_maxbpp * 8) - 1)) /
   2128 	    (sc->sc_maxbpp * 8));
   2129 #endif
   2130 	switch (crtc) {
   2131 	case 0:
   2132 		gencntl = RADEON_CRTC_GEN_CNTL;
   2133 		htotaldisp = RADEON_CRTC_H_TOTAL_DISP;
   2134 		hsyncstrt = RADEON_CRTC_H_SYNC_STRT_WID;
   2135 		vtotaldisp = RADEON_CRTC_V_TOTAL_DISP;
   2136 		vsyncstrt = RADEON_CRTC_V_SYNC_STRT_WID;
   2137 		fpvsyncstrt = RADEON_FP_V_SYNC_STRT_WID;
   2138 		fphsyncstrt = RADEON_FP_H_SYNC_STRT_WID;
   2139 		fpvtotaldisp = RADEON_FP_CRTC_V_TOTAL_DISP;
   2140 		fphtotaldisp = RADEON_FP_CRTC_H_TOTAL_DISP;
   2141 		break;
   2142 	case 1:
   2143 		gencntl = RADEON_CRTC2_GEN_CNTL;
   2144 		htotaldisp = RADEON_CRTC2_H_TOTAL_DISP;
   2145 		hsyncstrt = RADEON_CRTC2_H_SYNC_STRT_WID;
   2146 		vtotaldisp = RADEON_CRTC2_V_TOTAL_DISP;
   2147 		vsyncstrt = RADEON_CRTC2_V_SYNC_STRT_WID;
   2148 		fpvsyncstrt = RADEON_FP_V2_SYNC_STRT_WID;
   2149 		fphsyncstrt = RADEON_FP_H2_SYNC_STRT_WID;
   2150 		fpvtotaldisp = RADEON_FP_CRTC2_V_TOTAL_DISP;
   2151 		fphtotaldisp = RADEON_FP_CRTC2_H_TOTAL_DISP;
   2152 		break;
   2153 	default:
   2154 		panic("Bad CRTC!");
   2155 		break;
   2156 	}
   2157 
   2158 	/*
   2159 	 * CRTC_GEN_CNTL - depth, accelerator mode, etc.
   2160 	 */
   2161 	/* only bother with 32bpp and 8bpp */
   2162 	v = dp->rd_format << RADEON_CRTC_PIX_WIDTH_SHIFT;
   2163 
   2164 	if (crtc == 1) {
   2165 		v |= RADEON_CRTC2_CRT2_ON | RADEON_CRTC2_EN;
   2166 	} else {
   2167 		v |= RADEON_CRTC_EXT_DISP_EN | RADEON_CRTC_EN;
   2168 	}
   2169 
   2170 	if (mode->flags & VID_DBLSCAN)
   2171 		v |= RADEON_CRTC2_DBL_SCAN_EN;
   2172 
   2173 	if (mode->flags & VID_INTERLACE)
   2174 		v |= RADEON_CRTC2_INTERLACE_EN;
   2175 
   2176 	if (mode->flags & VID_CSYNC) {
   2177 		v |= RADEON_CRTC2_CSYNC_EN;
   2178 		if (crtc == 1)
   2179 			v |= RADEON_CRTC2_VSYNC_TRISTAT;
   2180 	}
   2181 
   2182 	PUT32(sc, gencntl, v);
   2183 	DPRINTF(("CRTC%s_GEN_CNTL = %08x\n", crtc ? "2" : "", v));
   2184 
   2185 	/*
   2186 	 * CRTC_EXT_CNTL - preserve disable flags, set ATI linear and EXT_CNT
   2187 	 */
   2188 	v = GET32(sc, RADEON_CRTC_EXT_CNTL);
   2189 	if (crtc == 0) {
   2190 		v &= (RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2191 		    RADEON_CRTC_DISPLAY_DIS);
   2192 		v |= RADEON_XCRT_CNT_EN | RADEON_VGA_ATI_LINEAR;
   2193 		if (mode->flags & VID_CSYNC)
   2194 			v |= RADEON_CRTC_VSYNC_TRISTAT;
   2195 	}
   2196 	/* unconditional turn on CRT, in case first CRTC is DFP */
   2197 	v |= RADEON_CRTC_CRT_ON;
   2198 	PUT32(sc, RADEON_CRTC_EXT_CNTL, v);
   2199 	PRINTREG(RADEON_CRTC_EXT_CNTL);
   2200 
   2201 	/*
   2202 	 * H_TOTAL_DISP
   2203 	 */
   2204 	v = ((mode->hdisplay / 8) - 1) << 16;
   2205 	v |= (mode->htotal / 8) - 1;
   2206 	PUT32(sc, htotaldisp, v);
   2207 	DPRINTF(("CRTC%s_H_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2208 	PUT32(sc, fphtotaldisp, v);
   2209 	DPRINTF(("FP_H%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2210 
   2211 	/*
   2212 	 * H_SYNC_STRT_WID
   2213 	 */
   2214 	v = (((mode->hsync_end - mode->hsync_start) / 8) << 16);
   2215 	v |= mode->hsync_start;
   2216 	if (mode->flags & VID_NHSYNC)
   2217 		v |= RADEON_CRTC_H_SYNC_POL;
   2218 	PUT32(sc, hsyncstrt, v);
   2219 	DPRINTF(("CRTC%s_H_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2220 	PUT32(sc, fphsyncstrt, v);
   2221 	DPRINTF(("FP_H%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2222 
   2223 	/*
   2224 	 * V_TOTAL_DISP
   2225 	 */
   2226 	v = ((mode->vdisplay - 1) << 16);
   2227 	v |= (mode->vtotal - 1);
   2228 	PUT32(sc, vtotaldisp, v);
   2229 	DPRINTF(("CRTC%s_V_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2230 	PUT32(sc, fpvtotaldisp, v);
   2231 	DPRINTF(("FP_V%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2232 
   2233 	/*
   2234 	 * V_SYNC_STRT_WID
   2235 	 */
   2236 	v = ((mode->vsync_end - mode->vsync_start) << 16);
   2237 	v |= (mode->vsync_start - 1);
   2238 	if (mode->flags & VID_NVSYNC)
   2239 		v |= RADEON_CRTC_V_SYNC_POL;
   2240 	PUT32(sc, vsyncstrt, v);
   2241 	DPRINTF(("CRTC%s_V_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2242 	PUT32(sc, fpvsyncstrt, v);
   2243 	DPRINTF(("FP_V%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2244 
   2245 	radeonfb_program_vclk(sc, mode->dot_clock, crtc);
   2246 
   2247 	switch (crtc) {
   2248 	case 0:
   2249 		PUT32(sc, RADEON_CRTC_OFFSET, 0);
   2250 		PUT32(sc, RADEON_CRTC_OFFSET_CNTL, 0);
   2251 		PUT32(sc, RADEON_CRTC_PITCH, pitch);
   2252 		CLR32(sc, RADEON_DISP_MERGE_CNTL, RADEON_DISP_RGB_OFFSET_EN);
   2253 
   2254 		CLR32(sc, RADEON_CRTC_EXT_CNTL,
   2255 		    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2256 		    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2257 		CLR32(sc, RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B);
   2258 		PRINTREG(RADEON_CRTC_EXT_CNTL);
   2259 		PRINTREG(RADEON_CRTC_GEN_CNTL);
   2260 		PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   2261 		break;
   2262 
   2263 	case 1:
   2264 		PUT32(sc, RADEON_CRTC2_OFFSET, 0);
   2265 		PUT32(sc, RADEON_CRTC2_OFFSET_CNTL, 0);
   2266 		PUT32(sc, RADEON_CRTC2_PITCH, pitch);
   2267 		CLR32(sc, RADEON_DISP2_MERGE_CNTL, RADEON_DISP2_RGB_OFFSET_EN);
   2268 		CLR32(sc, RADEON_CRTC2_GEN_CNTL,
   2269 		    RADEON_CRTC2_VSYNC_DIS |
   2270 		    RADEON_CRTC2_HSYNC_DIS |
   2271 		    RADEON_CRTC2_DISP_DIS | RADEON_CRTC2_DISP_REQ_EN_B);
   2272 		PRINTREG(RADEON_CRTC2_GEN_CNTL);
   2273 		break;
   2274 	}
   2275 }
   2276 
   2277 int
   2278 radeonfb_isblank(struct radeonfb_display *dp)
   2279 {
   2280 	uint32_t	reg, mask;
   2281 
   2282 	if(!dp->rd_softc->sc_mapped)
   2283 		return 1;
   2284 
   2285 	if (dp->rd_crtcs[0].rc_number) {
   2286 		reg = RADEON_CRTC2_GEN_CNTL;
   2287 		mask = RADEON_CRTC2_DISP_DIS;
   2288 	} else {
   2289 		reg = RADEON_CRTC_EXT_CNTL;
   2290 		mask = RADEON_CRTC_DISPLAY_DIS;
   2291 	}
   2292 	return ((GET32(dp->rd_softc, reg) & mask) ? 1 : 0);
   2293 }
   2294 
   2295 void
   2296 radeonfb_blank(struct radeonfb_display *dp, int blank)
   2297 {
   2298 	struct radeonfb_softc	*sc = dp->rd_softc;
   2299 	uint32_t		reg, mask;
   2300 	uint32_t		fpreg, fpval;
   2301 	int			i;
   2302 
   2303 	if (!sc->sc_mapped)
   2304 		return;
   2305 
   2306 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   2307 
   2308 		if (dp->rd_crtcs[i].rc_number) {
   2309 			reg = RADEON_CRTC2_GEN_CNTL;
   2310 			mask = RADEON_CRTC2_DISP_DIS;
   2311 			fpreg = RADEON_FP2_GEN_CNTL;
   2312 			fpval = RADEON_FP2_ON;
   2313 		} else {
   2314 			reg = RADEON_CRTC_EXT_CNTL;
   2315 			mask = RADEON_CRTC_DISPLAY_DIS;
   2316 			fpreg = RADEON_FP_GEN_CNTL;
   2317 			fpval = RADEON_FP_FPON;
   2318 		}
   2319 
   2320 		if (blank) {
   2321 			SET32(sc, reg, mask);
   2322 			CLR32(sc, fpreg, fpval);
   2323 		} else {
   2324 			CLR32(sc, reg, mask);
   2325 			SET32(sc, fpreg, fpval);
   2326 		}
   2327 	}
   2328 	PRINTREG(RADEON_FP_GEN_CNTL);
   2329 	PRINTREG(RADEON_FP2_GEN_CNTL);
   2330 }
   2331 
   2332 void
   2333 radeonfb_init_screen(void *cookie, struct vcons_screen *scr, int existing,
   2334     long *defattr)
   2335 {
   2336 	struct radeonfb_display *dp = cookie;
   2337 	struct rasops_info *ri = &scr->scr_ri;
   2338 
   2339 	/* initialize font subsystem */
   2340 	wsfont_init();
   2341 
   2342 	DPRINTF(("init screen called, existing %d\n", existing));
   2343 
   2344 	ri->ri_depth = dp->rd_bpp;
   2345 	ri->ri_width = dp->rd_virtx;
   2346 	ri->ri_height = dp->rd_virty;
   2347 	ri->ri_stride = dp->rd_stride;
   2348 	ri->ri_flg = RI_CENTER;
   2349 	switch (ri->ri_depth) {
   2350 		case 8:
   2351 			ri->ri_flg |= RI_ENABLE_ALPHA | RI_8BIT_IS_RGB;
   2352 			break;
   2353 		case 32:
   2354 			ri->ri_flg |= RI_ENABLE_ALPHA;
   2355 			/* we run radeons in RGB even on SPARC hardware */
   2356 			ri->ri_rnum = 8;
   2357 			ri->ri_gnum = 8;
   2358 			ri->ri_bnum = 8;
   2359 			ri->ri_rpos = 16;
   2360 			ri->ri_gpos = 8;
   2361 			ri->ri_bpos = 0;
   2362 			break;
   2363 	}
   2364 
   2365 	ri->ri_bits = (void *)dp->rd_fbptr;
   2366 
   2367 #ifdef VCONS_DRAW_INTR
   2368 	scr->scr_flags |= VCONS_DONT_READ;
   2369 #endif
   2370 
   2371 	if (existing) {
   2372 		ri->ri_flg |= RI_CLEAR;
   2373 
   2374 		/* start a modeswitch now */
   2375 		radeonfb_modeswitch(dp);
   2376 	}
   2377 
   2378 	/*
   2379 	 * XXX: font selection should be based on properties, with some
   2380 	 * normal/reasonable default.
   2381 	 */
   2382 
   2383 	/* initialize and look for an initial font */
   2384 	rasops_init(ri, 0, 0);
   2385 	ri->ri_caps = WSSCREEN_UNDERLINE | WSSCREEN_HILIT |
   2386 		    WSSCREEN_WSCOLORS | WSSCREEN_REVERSE;
   2387 
   2388 	rasops_reconfig(ri, dp->rd_virty / ri->ri_font->fontheight,
   2389 		    dp->rd_virtx / ri->ri_font->fontwidth);
   2390 
   2391 	/* enable acceleration */
   2392 	dp->rd_putchar = ri->ri_ops.putchar;
   2393 	ri->ri_ops.copyrows = radeonfb_copyrows;
   2394 	ri->ri_ops.copycols = radeonfb_copycols;
   2395 	ri->ri_ops.eraserows = radeonfb_eraserows;
   2396 	ri->ri_ops.erasecols = radeonfb_erasecols;
   2397 	/* pick a putchar method based on font and Radeon model */
   2398 	if (ri->ri_font->stride < ri->ri_font->fontwidth) {
   2399 		/* got a bitmap font */
   2400 		if (IS_R300(dp->rd_softc)) {
   2401 			/*
   2402 			 * radeonfb_putchar() doesn't work right on some R3xx
   2403 			 * so we use software drawing here, the wrapper just
   2404 			 *  makes sure the engine is idle before scribbling
   2405 			 * into vram
   2406 			 */
   2407 			ri->ri_ops.putchar = radeonfb_putchar_wrapper;
   2408 		} else {
   2409 			ri->ri_ops.putchar = radeonfb_putchar;
   2410 		}
   2411 	} else {
   2412 		/* got an alpha font */
   2413 		switch(ri->ri_depth) {
   2414 			case 32:
   2415 				ri->ri_ops.putchar = radeonfb_putchar_aa32;
   2416 				break;
   2417 			case 8:
   2418 				ri->ri_ops.putchar = radeonfb_putchar_aa8;
   2419 				break;
   2420 			default:
   2421 				/* XXX this should never happen */
   2422 				panic("%s: depth is not 8 or 32 but we got an" \
   2423 					 " alpha font?!", __func__);
   2424 		}
   2425 	}
   2426 	ri->ri_ops.cursor = radeonfb_cursor;
   2427 }
   2428 
   2429 void
   2430 radeonfb_set_fbloc(struct radeonfb_softc *sc)
   2431 {
   2432 	uint32_t	gen, ext, gen2 = 0;
   2433 	uint32_t	agploc, aperbase, apersize, mcfbloc;
   2434 
   2435 	gen = GET32(sc, RADEON_CRTC_GEN_CNTL);
   2436 	/* XXX */
   2437 	ext = GET32(sc, RADEON_CRTC_EXT_CNTL) & ~RADEON_CRTC_DISPLAY_DIS;
   2438 	agploc = GET32(sc, RADEON_MC_AGP_LOCATION);
   2439 	aperbase = GET32(sc, RADEON_CONFIG_APER_0_BASE);
   2440 	apersize = GET32(sc, RADEON_CONFIG_APER_SIZE);
   2441 
   2442 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISP_REQ_EN_B);
   2443 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISPLAY_DIS);
   2444 #if 0
   2445 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISPLAY_DIS);
   2446 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISP_REQ_EN_B);
   2447 #endif
   2448 
   2449 	if (HAS_CRTC2(sc)) {
   2450 		gen2 = GET32(sc, RADEON_CRTC2_GEN_CNTL);
   2451 		PUT32(sc, RADEON_CRTC2_GEN_CNTL,
   2452 		    gen2 | RADEON_CRTC2_DISP_REQ_EN_B);
   2453 	}
   2454 
   2455 	delay(100000);
   2456 
   2457 	mcfbloc = (aperbase >> 16) |
   2458 	    ((aperbase + (apersize - 1)) & 0xffff0000);
   2459 
   2460 	sc->sc_aperbase = (mcfbloc & 0xffff) << 16;
   2461 	sc->sc_memsz = apersize;
   2462 
   2463 	if (((agploc & 0xffff) << 16) !=
   2464 	    ((mcfbloc & 0xffff0000U) + 0x10000)) {
   2465 		agploc = mcfbloc & 0xffff0000U;
   2466 		agploc |= ((agploc + 0x10000) >> 16);
   2467 	}
   2468 
   2469 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2470 
   2471 	PUT32(sc, RADEON_MC_FB_LOCATION, mcfbloc);
   2472 	PUT32(sc, RADEON_MC_AGP_LOCATION, agploc);
   2473 
   2474 	DPRINTF(("aperbase = %u\n", aperbase));
   2475 	PRINTREG(RADEON_MC_FB_LOCATION);
   2476 	PRINTREG(RADEON_MC_AGP_LOCATION);
   2477 
   2478 	PUT32(sc, RADEON_DISPLAY_BASE_ADDR, sc->sc_aperbase);
   2479 
   2480 	if (HAS_CRTC2(sc))
   2481 		PUT32(sc, RADEON_DISPLAY2_BASE_ADDR, sc->sc_aperbase);
   2482 
   2483 	PUT32(sc, RADEON_OV0_BASE_ADDR, sc->sc_aperbase);
   2484 
   2485 #if 0
   2486 	/* XXX: what is this AGP garbage? :-) */
   2487 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2488 #endif
   2489 
   2490 	delay(100000);
   2491 
   2492 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen);
   2493 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext);
   2494 
   2495 	if (HAS_CRTC2(sc))
   2496 		PUT32(sc, RADEON_CRTC2_GEN_CNTL, gen2);
   2497 }
   2498 
   2499 void
   2500 radeonfb_init_misc(struct radeonfb_softc *sc)
   2501 {
   2502 	PUT32(sc, RADEON_BUS_CNTL,
   2503 	    RADEON_BUS_MASTER_DIS |
   2504 	    RADEON_BUS_PREFETCH_MODE_ACT |
   2505 	    RADEON_BUS_PCI_READ_RETRY_EN |
   2506 	    RADEON_BUS_PCI_WRT_RETRY_EN |
   2507 	    (3 << RADEON_BUS_RETRY_WS_SHIFT) |
   2508 	    RADEON_BUS_MSTR_RD_MULT |
   2509 	    RADEON_BUS_MSTR_RD_LINE |
   2510 	    RADEON_BUS_RD_DISCARD_EN |
   2511 	    RADEON_BUS_MSTR_DISCONNECT_EN |
   2512 	    RADEON_BUS_READ_BURST);
   2513 
   2514 	PUT32(sc, RADEON_BUS_CNTL1, 0xf0);
   2515 	/* PUT32(sc, RADEON_SEPROM_CNTL1, 0x09ff0000); */
   2516 	PUT32(sc, RADEON_FCP_CNTL, RADEON_FCP0_SRC_GND);
   2517 	PUT32(sc, RADEON_RBBM_CNTL,
   2518 	    (3 << RADEON_RB_SETTLE_SHIFT) |
   2519 	    (4 << RADEON_ABORTCLKS_HI_SHIFT) |
   2520 	    (4 << RADEON_ABORTCLKS_CP_SHIFT) |
   2521 	    (4 << RADEON_ABORTCLKS_CFIFO_SHIFT));
   2522 
   2523 	/* XXX: figure out what these mean! */
   2524 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2525 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2526 #if 0
   2527 	PUT32(sc, RADEON_DISP_MISC_CNTL, 0x5bb00400);
   2528 #endif
   2529 
   2530 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2531 	PUT32(sc, RADEON_GEN_INT_STATUS, GET32(sc, RADEON_GEN_INT_STATUS));
   2532 }
   2533 
   2534 /*
   2535  * This loads a linear color map for true color.
   2536  */
   2537 void
   2538 radeonfb_init_palette(struct radeonfb_softc *sc, int crtc)
   2539 {
   2540 	int		i;
   2541 	uint32_t	vclk;
   2542 
   2543 #define	DAC_WIDTH ((1 << 10) - 1)
   2544 #define	CLUT_WIDTH ((1 << 8) - 1)
   2545 #define	CLUT_COLOR(i)      ((i * DAC_WIDTH * 2 / CLUT_WIDTH + 1) / 2)
   2546 
   2547 	vclk = GETPLL(sc, RADEON_VCLK_ECP_CNTL);
   2548 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk & ~RADEON_PIXCLK_DAC_ALWAYS_ONb);
   2549 
   2550 	if (crtc)
   2551 		SET32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2552 	else
   2553 		CLR32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2554 
   2555 	PUT32(sc, RADEON_PALETTE_INDEX, 0);
   2556 	if (sc->sc_displays[crtc].rd_bpp == 0)
   2557 		sc->sc_displays[crtc].rd_bpp = RADEONFB_DEFAULT_DEPTH;
   2558 
   2559 	if (sc->sc_displays[crtc].rd_bpp == 8) {
   2560 		/* ANSI palette */
   2561 		int j = 0;
   2562 		uint32_t tmp, r, g, b;
   2563 
   2564                 for (i = 0; i <= CLUT_WIDTH; ++i) {
   2565     			tmp = i & 0xe0;
   2566 			/*
   2567 			 * replicate bits so 0xe0 maps to a red value of 0xff
   2568 			 * in order to make white look actually white
   2569 			 */
   2570 			tmp |= (tmp >> 3) | (tmp >> 6);
   2571 			r = tmp;
   2572 
   2573 			tmp = (i & 0x1c) << 3;
   2574 			tmp |= (tmp >> 3) | (tmp >> 6);
   2575 			g = tmp;
   2576 
   2577 			tmp = (i & 0x03) << 6;
   2578 			tmp |= tmp >> 2;
   2579 			tmp |= tmp >> 4;
   2580 			b = tmp;
   2581             	PUT32(sc, RADEON_PALETTE_30_DATA,
   2582 				(r << 22) |
   2583 				(g << 12) |
   2584 				(b << 2));
   2585 			j += 3;
   2586 		}
   2587 	} else {
   2588 		/* linear ramp */
   2589 		for (i = 0; i <= CLUT_WIDTH; ++i) {
   2590 			PUT32(sc, RADEON_PALETTE_30_DATA,
   2591 			    (CLUT_COLOR(i) << 10) |
   2592 			    (CLUT_COLOR(i) << 20) |
   2593 			    (CLUT_COLOR(i)));
   2594 		}
   2595 	}
   2596 
   2597 	CLR32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2598 	PRINTREG(RADEON_DAC_CNTL2);
   2599 
   2600 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk);
   2601 }
   2602 
   2603 /*
   2604  * Bugs in some R300 hardware requires this when accessing CLOCK_CNTL_INDEX.
   2605  */
   2606 void
   2607 radeonfb_r300cg_workaround(struct radeonfb_softc *sc)
   2608 {
   2609 	uint32_t	tmp, save;
   2610 
   2611 	save = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   2612 	tmp = save & ~(0x3f | RADEON_PLL_WR_EN);
   2613 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, tmp);
   2614 	tmp = GET32(sc, RADEON_CLOCK_CNTL_DATA);
   2615 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, save);
   2616 }
   2617 
   2618 /*
   2619  * Acceleration entry points.
   2620  */
   2621 
   2622 /* this one draws characters using bitmap fonts */
   2623 static void
   2624 radeonfb_putchar(void *cookie, int row, int col, u_int c, long attr)
   2625 {
   2626 	struct rasops_info	*ri = cookie;
   2627 	struct vcons_screen	*scr = ri->ri_hw;
   2628 	struct radeonfb_display	*dp = scr->scr_cookie;
   2629 	struct radeonfb_softc	*sc = dp->rd_softc;
   2630 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2631 	uint32_t		w, h;
   2632 	int			xd, yd, offset, i;
   2633 	uint32_t		bg, fg, gmc;
   2634 	uint32_t		reg;
   2635 	uint8_t			*data8;
   2636 	uint16_t		*data16;
   2637 	void			*data;
   2638 
   2639 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2640 		return;
   2641 
   2642 	if (!CHAR_IN_FONT(c, font))
   2643 		return;
   2644 
   2645 	w = font->fontwidth;
   2646 	h = font->fontheight;
   2647 
   2648 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2649 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2650 
   2651 	xd = ri->ri_xorigin + col * w;
   2652 	yd = ri->ri_yorigin + row * h;
   2653 
   2654 	if (c == 0x20) {
   2655 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   2656 		return;
   2657 	}
   2658 	data = WSFONT_GLYPH(c, font);
   2659 
   2660 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2661 
   2662 	radeonfb_wait_fifo(sc, 9);
   2663 
   2664 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2665 	    RADEON_GMC_BRUSH_NONE |
   2666 	    RADEON_GMC_SRC_DATATYPE_MONO_FG_BG |
   2667 	    RADEON_GMC_DST_CLIPPING |
   2668 	    RADEON_ROP3_S |
   2669 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2670 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2671 	    RADEON_GMC_WR_MSK_DIS |
   2672 	    gmc);
   2673 
   2674 	PUT32(sc, RADEON_SC_LEFT, xd);
   2675 	PUT32(sc, RADEON_SC_RIGHT, xd + w);
   2676 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, fg);
   2677 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, bg);
   2678 	PUT32(sc, RADEON_DP_CNTL,
   2679 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2680 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2681 
   2682 	PUT32(sc, RADEON_SRC_X_Y, 0);
   2683 	offset = 32 - (font->stride << 3);
   2684 	PUT32(sc, RADEON_DST_X_Y, ((xd - offset) << 16) | yd);
   2685 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (32 << 16) | h);
   2686 
   2687 	radeonfb_wait_fifo(sc, h);
   2688 	switch (font->stride) {
   2689 		case 1: {
   2690 			data8 = data;
   2691 			for (i = 0; i < h; i++) {
   2692 				reg = *data8;
   2693 #if BYTE_ORDER == LITTLE_ENDIAN
   2694 				reg = reg << 24;
   2695 #endif
   2696 				bus_space_write_stream_4(sc->sc_regt,
   2697 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   2698 				data8++;
   2699 			}
   2700 			break;
   2701 		}
   2702 		case 2: {
   2703 			data16 = data;
   2704 			for (i = 0; i < h; i++) {
   2705 				reg = *data16;
   2706 #if BYTE_ORDER == LITTLE_ENDIAN
   2707 				reg = reg << 16;
   2708 #endif
   2709 				bus_space_write_stream_4(sc->sc_regt,
   2710 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   2711 				data16++;
   2712 			}
   2713 			break;
   2714 		}
   2715 	}
   2716 	if (attr & 1)
   2717 		radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   2718 }
   2719 
   2720 /* ... while this one is for anti-aliased ones */
   2721 static void
   2722 radeonfb_putchar_aa32(void *cookie, int row, int col, u_int c, long attr)
   2723 {
   2724 	struct rasops_info	*ri = cookie;
   2725 	struct vcons_screen	*scr = ri->ri_hw;
   2726 	struct radeonfb_display	*dp = scr->scr_cookie;
   2727 	struct radeonfb_softc	*sc = dp->rd_softc;
   2728 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2729 	uint32_t		bg, fg, gmc;
   2730 	uint8_t			*data;
   2731 	int			w, h, xd, yd;
   2732 	int 			i, r, g, b, aval;
   2733 	int 			rf, gf, bf, rb, gb, bb;
   2734 	uint32_t 		pixel;
   2735 	int rv;
   2736 
   2737 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2738 		return;
   2739 
   2740 	if (!CHAR_IN_FONT(c, font))
   2741 		return;
   2742 
   2743 	w = font->fontwidth;
   2744 	h = font->fontheight;
   2745 
   2746 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2747 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2748 
   2749 	xd = ri->ri_xorigin + col * w;
   2750 	yd = ri->ri_yorigin + row * h;
   2751 
   2752 	if (c == 0x20) {
   2753 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   2754 		if (attr & 1)
   2755 			radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   2756 		return;
   2757 	}
   2758 	rv = glyphcache_try(&dp->rd_gc, c, xd, yd, attr);
   2759 	if (rv == GC_OK)
   2760 		return;
   2761 
   2762 	data = WSFONT_GLYPH(c, font);
   2763 
   2764 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2765 
   2766 	radeonfb_wait_fifo(sc, 5);
   2767 
   2768 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2769 	    RADEON_GMC_BRUSH_NONE |
   2770 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2771 	    RADEON_ROP3_S |
   2772 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2773 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2774 	    RADEON_GMC_WR_MSK_DIS |
   2775 	    gmc);
   2776 
   2777 	PUT32(sc, RADEON_DP_CNTL,
   2778 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2779 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2780 
   2781 	PUT32(sc, RADEON_SRC_X_Y, 0);
   2782 	PUT32(sc, RADEON_DST_X_Y, (xd << 16) | yd);
   2783 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (w << 16) | h);
   2784 
   2785 	rf = (fg >> 16) & 0xff;
   2786 	rb = (bg >> 16) & 0xff;
   2787 	gf = (fg >> 8) & 0xff;
   2788 	gb = (bg >> 8) & 0xff;
   2789 	bf =  fg & 0xff;
   2790 	bb =  bg & 0xff;
   2791 
   2792 	/*
   2793 	 * I doubt we can upload data faster than even the slowest Radeon
   2794 	 * could process them, especially when doing the alpha blending stuff
   2795 	 * along the way, so just make sure there's some room in the FIFO and
   2796 	 * then hammer away
   2797 	 * As it turns out we can, so make periodic stops to let the FIFO
   2798 	 * drain.
   2799 	 */
   2800 	radeonfb_wait_fifo(sc, 20);
   2801 	for (i = 0; i < ri->ri_fontscale; i++) {
   2802 		aval = *data;
   2803 		data++;
   2804 		if (aval == 0) {
   2805 			pixel = bg;
   2806 		} else if (aval == 255) {
   2807 			pixel = fg;
   2808 		} else {
   2809 			r = aval * rf + (255 - aval) * rb;
   2810 			g = aval * gf + (255 - aval) * gb;
   2811 			b = aval * bf + (255 - aval) * bb;
   2812 			pixel = (r & 0xff00) << 8 |
   2813 			        (g & 0xff00) |
   2814 			        (b & 0xff00) >> 8;
   2815 		}
   2816 		if (i & 16)
   2817 			radeonfb_wait_fifo(sc, 20);
   2818 		PUT32(sc, RADEON_HOST_DATA0, pixel);
   2819 	}
   2820 	if (rv == GC_ADD) {
   2821 		glyphcache_add(&dp->rd_gc, c, xd, yd);
   2822 	} else
   2823 		if (attr & 1)
   2824 			radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   2825 
   2826 }
   2827 
   2828 static void
   2829 radeonfb_putchar_aa8(void *cookie, int row, int col, u_int c, long attr)
   2830 {
   2831 	struct rasops_info	*ri = cookie;
   2832 	struct vcons_screen	*scr = ri->ri_hw;
   2833 	struct radeonfb_display	*dp = scr->scr_cookie;
   2834 	struct radeonfb_softc	*sc = dp->rd_softc;
   2835 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2836 	uint32_t bg, fg, latch = 0, bg8, fg8, pixel, gmc;
   2837 	int i, x, y, wi, he, r, g, b, aval;
   2838 	int r1, g1, b1, r0, g0, b0, fgo, bgo;
   2839 	uint8_t *data8;
   2840 	int rv, cnt;
   2841 
   2842 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2843 		return;
   2844 
   2845 	if (!CHAR_IN_FONT(c, font))
   2846 		return;
   2847 
   2848 	wi = font->fontwidth;
   2849 	he = font->fontheight;
   2850 
   2851 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2852 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2853 
   2854 	x = ri->ri_xorigin + col * wi;
   2855 	y = ri->ri_yorigin + row * he;
   2856 
   2857 	if (c == 0x20) {
   2858 		radeonfb_rectfill(dp, x, y, wi, he, bg);
   2859 		if (attr & 1)
   2860 			radeonfb_rectfill(dp, x, y + he - 2, wi, 1, fg);
   2861 		return;
   2862 	}
   2863 	rv = glyphcache_try(&dp->rd_gc, c, x, y, attr);
   2864 	if (rv == GC_OK)
   2865 		return;
   2866 
   2867 	data8 = WSFONT_GLYPH(c, font);
   2868 
   2869 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2870 
   2871 	radeonfb_wait_fifo(sc, 5);
   2872 
   2873 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2874 	    RADEON_GMC_BRUSH_NONE |
   2875 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2876 	    RADEON_ROP3_S |
   2877 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2878 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2879 	    RADEON_GMC_WR_MSK_DIS |
   2880 	    gmc);
   2881 
   2882 	PUT32(sc, RADEON_DP_CNTL,
   2883 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2884 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2885 
   2886 	PUT32(sc, RADEON_SRC_X_Y, 0);
   2887 	PUT32(sc, RADEON_DST_X_Y, (x << 16) | y);
   2888 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (wi << 16) | he);
   2889 
   2890 	/*
   2891 	 * we need the RGB colours here, so get offsets into rasops_cmap
   2892 	 */
   2893 	fgo = ((attr >> 24) & 0xf) * 3;
   2894 	bgo = ((attr >> 16) & 0xf) * 3;
   2895 
   2896 	r0 = rasops_cmap[bgo];
   2897 	r1 = rasops_cmap[fgo];
   2898 	g0 = rasops_cmap[bgo + 1];
   2899 	g1 = rasops_cmap[fgo + 1];
   2900 	b0 = rasops_cmap[bgo + 2];
   2901 	b1 = rasops_cmap[fgo + 2];
   2902 #define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6))
   2903 	bg8 = R3G3B2(r0, g0, b0);
   2904 	fg8 = R3G3B2(r1, g1, b1);
   2905 
   2906 	radeonfb_wait_fifo(sc, 20);
   2907 	cnt = 0;
   2908 	for (i = 0; i < ri->ri_fontscale; i++) {
   2909 		aval = *data8;
   2910 		if (aval == 0) {
   2911 			pixel = bg8;
   2912 		} else if (aval == 255) {
   2913 			pixel = fg8;
   2914 		} else {
   2915 			r = aval * r1 + (255 - aval) * r0;
   2916 			g = aval * g1 + (255 - aval) * g0;
   2917 			b = aval * b1 + (255 - aval) * b0;
   2918 			pixel = ((r & 0xe000) >> 8) |
   2919 				((g & 0xe000) >> 11) |
   2920 				((b & 0xc000) >> 14);
   2921 		}
   2922 		latch |= pixel << (8 * (i & 3));
   2923 		/* write in 32bit chunks */
   2924 		if ((i & 3) == 3) {
   2925 			PUT32(sc, RADEON_HOST_DATA0, latch);
   2926 			/*
   2927 			 * not strictly necessary, old data should be shifted
   2928 			 * out
   2929 			 */
   2930 			latch = 0;
   2931 			cnt++;
   2932 			if (cnt > 16) {
   2933 				cnt = 0;
   2934 				radeonfb_wait_fifo(sc, 20);
   2935 			}
   2936 		}
   2937 		data8++;
   2938 	}
   2939 	/* if we have pixels left in latch write them out */
   2940 	if ((i & 3) != 0) {
   2941 		/*
   2942 		 * radeon is weird - apparently leftover pixels are written
   2943 		 * from the middle, not from the left as everything else
   2944 		 */
   2945 		PUT32(sc, RADEON_HOST_DATA0, latch);
   2946 	}
   2947 
   2948 	if (rv == GC_ADD) {
   2949 		glyphcache_add(&dp->rd_gc, c, x, y);
   2950 	} else
   2951 		if (attr & 1)
   2952 			radeonfb_rectfill(dp, x, y + he - 2, wi, 1, fg);
   2953 
   2954 }
   2955 
   2956 /*
   2957  * wrapper for software character drawing
   2958  * just sync the engine and call rasops*_putchar()
   2959  */
   2960 
   2961 static void
   2962 radeonfb_putchar_wrapper(void *cookie, int row, int col, u_int c, long attr)
   2963 {
   2964 	struct rasops_info	*ri = cookie;
   2965 	struct vcons_screen	*scr = ri->ri_hw;
   2966 	struct radeonfb_display	*dp = scr->scr_cookie;
   2967 
   2968 	radeonfb_engine_idle(dp->rd_softc);
   2969 	dp->rd_putchar(ri, row, col, c, attr);
   2970 }
   2971 
   2972 static void
   2973 radeonfb_eraserows(void *cookie, int row, int nrows, long fillattr)
   2974 {
   2975 	struct rasops_info	*ri = cookie;
   2976 	struct vcons_screen	*scr = ri->ri_hw;
   2977 	struct radeonfb_display	*dp = scr->scr_cookie;
   2978 	uint32_t		x, y, w, h, fg, bg, ul;
   2979 
   2980 	/* XXX: check for full emulation mode? */
   2981 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2982 		x = ri->ri_xorigin;
   2983 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   2984 		w = ri->ri_emuwidth;
   2985 		h = ri->ri_font->fontheight * nrows;
   2986 
   2987 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   2988 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   2989 	}
   2990 }
   2991 
   2992 static void
   2993 radeonfb_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
   2994 {
   2995 	struct rasops_info	*ri = cookie;
   2996 	struct vcons_screen	*scr = ri->ri_hw;
   2997 	struct radeonfb_display	*dp = scr->scr_cookie;
   2998 	uint32_t		x, ys, yd, w, h;
   2999 
   3000 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3001 		x = ri->ri_xorigin;
   3002 		ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow;
   3003 		yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow;
   3004 		w = ri->ri_emuwidth;
   3005 		h = ri->ri_font->fontheight * nrows;
   3006 		radeonfb_bitblt(dp, x, ys, x, yd, w, h,
   3007 		    RADEON_ROP3_S);
   3008 	}
   3009 }
   3010 
   3011 static void
   3012 radeonfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
   3013 {
   3014 	struct rasops_info	*ri = cookie;
   3015 	struct vcons_screen	*scr = ri->ri_hw;
   3016 	struct radeonfb_display	*dp = scr->scr_cookie;
   3017 	uint32_t		xs, xd, y, w, h;
   3018 
   3019 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3020 		xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol;
   3021 		xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol;
   3022 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3023 		w = ri->ri_font->fontwidth * ncols;
   3024 		h = ri->ri_font->fontheight;
   3025 		radeonfb_bitblt(dp, xs, y, xd, y, w, h,
   3026 		    RADEON_ROP3_S);
   3027 	}
   3028 }
   3029 
   3030 static void
   3031 radeonfb_erasecols(void *cookie, int row, int startcol, int ncols,
   3032     long fillattr)
   3033 {
   3034 	struct rasops_info	*ri = cookie;
   3035 	struct vcons_screen	*scr = ri->ri_hw;
   3036 	struct radeonfb_display	*dp = scr->scr_cookie;
   3037 	uint32_t		x, y, w, h, fg, bg, ul;
   3038 
   3039 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3040 		x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol;
   3041 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3042 		w = ri->ri_font->fontwidth * ncols;
   3043 		h = ri->ri_font->fontheight;
   3044 
   3045 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   3046 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   3047 	}
   3048 }
   3049 
   3050 static void
   3051 radeonfb_cursor(void *cookie, int on, int row, int col)
   3052 {
   3053 	struct rasops_info *ri = cookie;
   3054 	struct vcons_screen *scr = ri->ri_hw;
   3055 	struct radeonfb_display	*dp = scr->scr_cookie;
   3056 	int x, y, wi, he;
   3057 
   3058 	wi = ri->ri_font->fontwidth;
   3059 	he = ri->ri_font->fontheight;
   3060 
   3061 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3062 		x = ri->ri_ccol * wi + ri->ri_xorigin;
   3063 		y = ri->ri_crow * he + ri->ri_yorigin;
   3064 		/* first turn off the old cursor */
   3065 		if (ri->ri_flg & RI_CURSOR) {
   3066 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   3067 			    RADEON_ROP3_Dn);
   3068 			ri->ri_flg &= ~RI_CURSOR;
   3069 		}
   3070 		ri->ri_crow = row;
   3071 		ri->ri_ccol = col;
   3072 		/* then (possibly) turn on the new one */
   3073 		if (on) {
   3074 			x = ri->ri_ccol * wi + ri->ri_xorigin;
   3075 			y = ri->ri_crow * he + ri->ri_yorigin;
   3076 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   3077 			    RADEON_ROP3_Dn);
   3078 			ri->ri_flg |= RI_CURSOR;
   3079 		}
   3080 	} else {
   3081 		scr->scr_ri.ri_crow = row;
   3082 		scr->scr_ri.ri_ccol = col;
   3083 		scr->scr_ri.ri_flg &= ~RI_CURSOR;
   3084 	}
   3085 }
   3086 
   3087 /*
   3088  * Underlying acceleration support.
   3089  */
   3090 
   3091 static void
   3092 radeonfb_rectfill(struct radeonfb_display *dp, int dstx, int dsty,
   3093     int width, int height, uint32_t color)
   3094 {
   3095 	struct radeonfb_softc	*sc = dp->rd_softc;
   3096 	uint32_t		gmc;
   3097 
   3098 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3099 
   3100 	radeonfb_wait_fifo(sc, 6);
   3101 
   3102 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3103 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3104 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3105 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3106 	    RADEON_ROP3_P | gmc);
   3107 
   3108 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, color);
   3109 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3110 	PUT32(sc, RADEON_DP_CNTL,
   3111 	    RADEON_DST_X_LEFT_TO_RIGHT |
   3112 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   3113 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   3114 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   3115 
   3116 }
   3117 
   3118 static void
   3119 radeonfb_rectfill_a(void *cookie, int dstx, int dsty,
   3120     int width, int height, long attr)
   3121 {
   3122 	struct radeonfb_display *dp = cookie;
   3123 
   3124 	radeonfb_rectfill(dp, dstx, dsty, width, height,
   3125 	    dp->rd_vscreen.scr_ri.ri_devcmap[(attr >> 24 & 0xf)]);
   3126 }
   3127 
   3128 static void
   3129 radeonfb_bitblt(void *cookie, int srcx, int srcy,
   3130     int dstx, int dsty, int width, int height, int rop)
   3131 {
   3132 	struct radeonfb_display *dp = cookie;
   3133 	struct radeonfb_softc	*sc = dp->rd_softc;
   3134 	uint32_t		gmc;
   3135 	uint32_t		dir;
   3136 
   3137 	if (dsty < srcy) {
   3138 		dir = RADEON_DST_Y_TOP_TO_BOTTOM;
   3139 	} else {
   3140 		srcy += height - 1;
   3141 		dsty += height - 1;
   3142 		dir = 0;
   3143 	}
   3144 	if (dstx < srcx) {
   3145 		dir |= RADEON_DST_X_LEFT_TO_RIGHT;
   3146 	} else {
   3147 		srcx += width - 1;
   3148 		dstx += width - 1;
   3149 	}
   3150 
   3151 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3152 
   3153 	radeonfb_wait_fifo(sc, 6);
   3154 
   3155 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3156 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3157 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3158 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3159 	    RADEON_DP_SRC_SOURCE_MEMORY |
   3160 	    rop | gmc);
   3161 
   3162 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3163 	PUT32(sc, RADEON_DP_CNTL, dir);
   3164 	PUT32(sc, RADEON_SRC_Y_X, (srcy << 16) | srcx);
   3165 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   3166 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   3167 }
   3168 
   3169 static void
   3170 radeonfb_engine_idle(struct radeonfb_softc *sc)
   3171 {
   3172 
   3173 	radeonfb_wait_fifo(sc, 64);
   3174 	while ((GET32(sc, RADEON_RBBM_STATUS) &
   3175 			RADEON_RBBM_ACTIVE) != 0);
   3176 	radeonfb_engine_flush(sc);
   3177 }
   3178 
   3179 static inline void
   3180 radeonfb_wait_fifo(struct radeonfb_softc *sc, int n)
   3181 {
   3182 	int	i;
   3183 
   3184 	for (i = RADEON_TIMEOUT; i; i--) {
   3185 		if ((GET32(sc, RADEON_RBBM_STATUS) &
   3186 			RADEON_RBBM_FIFOCNT_MASK) >= n)
   3187 			return;
   3188 	}
   3189 #ifdef	DIAGNOSTIC
   3190 	if (!i)
   3191 		printf("%s: timed out waiting for fifo (%x)\n",
   3192 		    XNAME(sc), GET32(sc, RADEON_RBBM_STATUS));
   3193 #endif
   3194 }
   3195 
   3196 static void
   3197 radeonfb_engine_flush(struct radeonfb_softc *sc)
   3198 {
   3199 	int	i = 0;
   3200 
   3201 	if (IS_R300(sc)) {
   3202 		SET32(sc, R300_DSTCACHE_CTLSTAT, R300_RB2D_DC_FLUSH_ALL);
   3203 		while (GET32(sc, R300_DSTCACHE_CTLSTAT) & R300_RB2D_DC_BUSY) {
   3204 			i++;
   3205 		}
   3206 	} else {
   3207 		SET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT,
   3208 		    RADEON_RB2D_DC_FLUSH_ALL);
   3209 		while (GET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT) &
   3210 			RADEON_RB2D_DC_BUSY) {
   3211 			i++;
   3212 		}
   3213 	}
   3214 #ifdef DIAGNOSTIC
   3215 	if (i > RADEON_TIMEOUT)
   3216 		printf("%s: engine flush timed out!\n", XNAME(sc));
   3217 #endif
   3218 }
   3219 
   3220 static inline void
   3221 radeonfb_unclip(struct radeonfb_softc *sc)
   3222 {
   3223 
   3224 	radeonfb_wait_fifo(sc, 2);
   3225 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   3226 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   3227 }
   3228 
   3229 static void
   3230 radeonfb_engine_init(struct radeonfb_display *dp)
   3231 {
   3232 	struct radeonfb_softc	*sc = dp->rd_softc;
   3233 	uint32_t		pitch;
   3234 	volatile uint32_t	junk;
   3235 
   3236 	/* no 3D */
   3237 	PUT32(sc, RADEON_RB3D_CNTL, 0);
   3238 
   3239 	radeonfb_engine_reset(sc);
   3240 	pitch = ((dp->rd_virtx * (dp->rd_bpp / 8) + 0x3f)) >> 6;
   3241 
   3242 	radeonfb_wait_fifo(sc, 1);
   3243 	if (!IS_R300(sc))
   3244 		PUT32(sc, RADEON_RB2D_DSTCACHE_MODE, 0);
   3245 
   3246 	radeonfb_wait_fifo(sc, 3);
   3247 	PUT32(sc, RADEON_DEFAULT_PITCH_OFFSET,
   3248 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   3249 
   3250 
   3251 	PUT32(sc, RADEON_DST_PITCH_OFFSET,
   3252 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   3253 	PUT32(sc, RADEON_SRC_PITCH_OFFSET,
   3254 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   3255 
   3256 	junk = GET32(sc, RADEON_DP_DATATYPE);
   3257 
   3258 	/* default scissors -- no clipping */
   3259 	radeonfb_wait_fifo(sc, 1);
   3260 	PUT32(sc, RADEON_DEFAULT_SC_BOTTOM_RIGHT,
   3261 	    RADEON_DEFAULT_SC_RIGHT_MAX | RADEON_DEFAULT_SC_BOTTOM_MAX);
   3262 
   3263 	radeonfb_wait_fifo(sc, 1);
   3264 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3265 	    (dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT) |
   3266 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3267 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3268 	    RADEON_GMC_SRC_DATATYPE_COLOR);
   3269 
   3270 	radeonfb_wait_fifo(sc, 10);
   3271 	PUT32(sc, RADEON_DST_LINE_START, 0);
   3272 	PUT32(sc, RADEON_DST_LINE_END, 0);
   3273 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, 0xffffffff);
   3274 	PUT32(sc, RADEON_DP_BRUSH_BKGD_CLR, 0);
   3275 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, 0xffffffff);
   3276 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, 0);
   3277 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3278 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   3279 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   3280 	PUT32(sc, RADEON_AUX_SC_CNTL, 0);
   3281 	radeonfb_engine_idle(sc);
   3282 }
   3283 
   3284 static void
   3285 radeonfb_engine_reset(struct radeonfb_softc *sc)
   3286 {
   3287 	uint32_t	hpc, rbbm, mclkcntl, clkindex;
   3288 
   3289 	radeonfb_engine_flush(sc);
   3290 
   3291 	clkindex = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   3292 	if (HAS_R300CG(sc))
   3293 		radeonfb_r300cg_workaround(sc);
   3294 	mclkcntl = GETPLL(sc, RADEON_MCLK_CNTL);
   3295 
   3296 	/*
   3297 	 * According to comments in XFree code, resetting the HDP via
   3298 	 * the RBBM_SOFT_RESET can cause bad behavior on some systems.
   3299 	 * So we use HOST_PATH_CNTL instead.
   3300 	 */
   3301 
   3302 	hpc = GET32(sc, RADEON_HOST_PATH_CNTL);
   3303 	rbbm = GET32(sc, RADEON_RBBM_SOFT_RESET);
   3304 	if (IS_R300(sc)) {
   3305 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   3306 		    RADEON_SOFT_RESET_CP |
   3307 		    RADEON_SOFT_RESET_HI |
   3308 		    RADEON_SOFT_RESET_E2);
   3309 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3310 		PUT32(sc, RADEON_RBBM_SOFT_RESET, 0);
   3311 		/*
   3312 		 * XXX: this bit is not defined in any ATI docs I have,
   3313 		 * nor in the XFree code, but XFree does it.  Why?
   3314 		 */
   3315 		SET32(sc, RADEON_RB2D_DSTCACHE_MODE, (1<<17));
   3316 	} else {
   3317 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   3318 		    RADEON_SOFT_RESET_CP |
   3319 		    RADEON_SOFT_RESET_SE |
   3320 		    RADEON_SOFT_RESET_RE |
   3321 		    RADEON_SOFT_RESET_PP |
   3322 		    RADEON_SOFT_RESET_E2 |
   3323 		    RADEON_SOFT_RESET_RB);
   3324 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3325 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm &
   3326 		    ~(RADEON_SOFT_RESET_CP |
   3327 			RADEON_SOFT_RESET_SE |
   3328 			RADEON_SOFT_RESET_RE |
   3329 			RADEON_SOFT_RESET_PP |
   3330 			RADEON_SOFT_RESET_E2 |
   3331 			RADEON_SOFT_RESET_RB));
   3332 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3333 	}
   3334 
   3335 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc | RADEON_HDP_SOFT_RESET);
   3336 	GET32(sc, RADEON_HOST_PATH_CNTL);
   3337 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc);
   3338 
   3339 	if (IS_R300(sc))
   3340 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm);
   3341 
   3342 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, clkindex);
   3343 	PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   3344 	PUTPLL(sc, RADEON_MCLK_CNTL, mclkcntl);
   3345 
   3346 	if (HAS_R300CG(sc))
   3347 		radeonfb_r300cg_workaround(sc);
   3348 }
   3349 
   3350 static int
   3351 radeonfb_set_curpos(struct radeonfb_display *dp, struct wsdisplay_curpos *pos)
   3352 {
   3353 	int		x, y;
   3354 
   3355 	x = pos->x;
   3356 	y = pos->y;
   3357 
   3358 	/*
   3359 	 * This doesn't let a cursor move off the screen.  I'm not
   3360 	 * sure if this will have negative effects for e.g. Xinerama.
   3361 	 * I'd guess Xinerama handles it by changing the cursor shape,
   3362 	 * but that needs verification.
   3363 	 */
   3364 	if (x >= dp->rd_virtx)
   3365 		x = dp->rd_virtx - 1;
   3366 	if (x < 0)
   3367 		x = 0;
   3368 	if (y >= dp->rd_virty)
   3369 		y = dp->rd_virty - 1;
   3370 	if (y < 0)
   3371 		y = 0;
   3372 
   3373 	dp->rd_cursor.rc_pos.x = x;
   3374 	dp->rd_cursor.rc_pos.y = y;
   3375 
   3376 	radeonfb_cursor_position(dp);
   3377 	return 0;
   3378 }
   3379 
   3380 static int
   3381 radeonfb_set_cursor(struct radeonfb_display *dp, struct wsdisplay_cursor *wc)
   3382 {
   3383 	unsigned	flags;
   3384 
   3385 	uint8_t		r[2], g[2], b[2];
   3386 	unsigned	index, count;
   3387 	int		i, err;
   3388 	int		pitch, size;
   3389 	struct radeonfb_cursor	nc;
   3390 
   3391 	flags = wc->which;
   3392 
   3393 	/* copy old values */
   3394 	nc = dp->rd_cursor;
   3395 
   3396 	if (flags & WSDISPLAY_CURSOR_DOCMAP) {
   3397 		index = wc->cmap.index;
   3398 		count = wc->cmap.count;
   3399 
   3400 		if (index >= 2 || (index + count) > 2)
   3401 			return EINVAL;
   3402 
   3403 		err = copyin(wc->cmap.red, &r[index], count);
   3404 		if (err)
   3405 			return err;
   3406 		err = copyin(wc->cmap.green, &g[index], count);
   3407 		if (err)
   3408 			return err;
   3409 		err = copyin(wc->cmap.blue, &b[index], count);
   3410 		if (err)
   3411 			return err;
   3412 
   3413 		for (i = index; i < index + count; i++) {
   3414 			nc.rc_cmap[i] =
   3415 			    (r[i] << 16) + (g[i] << 8) + (b[i] << 0);
   3416 		}
   3417 	}
   3418 
   3419 	if (flags & WSDISPLAY_CURSOR_DOSHAPE) {
   3420 		if ((wc->size.x > RADEON_CURSORMAXX) ||
   3421 		    (wc->size.y > RADEON_CURSORMAXY))
   3422 			return EINVAL;
   3423 
   3424 		/* figure bytes per line */
   3425 		pitch = (wc->size.x + 7) / 8;
   3426 		size = pitch * wc->size.y;
   3427 
   3428 		/* clear the old cursor and mask */
   3429 		memset(nc.rc_image, 0, 512);
   3430 		memset(nc.rc_mask, 0, 512);
   3431 
   3432 		nc.rc_size = wc->size;
   3433 
   3434 		if ((err = copyin(wc->image, nc.rc_image, size)) != 0)
   3435 			return err;
   3436 
   3437 		if ((err = copyin(wc->mask, nc.rc_mask, size)) != 0)
   3438 			return err;
   3439 	}
   3440 
   3441 	if (flags & WSDISPLAY_CURSOR_DOHOT) {
   3442 		nc.rc_hot = wc->hot;
   3443 		if (nc.rc_hot.x >= nc.rc_size.x)
   3444 			nc.rc_hot.x = nc.rc_size.x - 1;
   3445 		if (nc.rc_hot.y >= nc.rc_size.y)
   3446 			nc.rc_hot.y = nc.rc_size.y - 1;
   3447 	}
   3448 
   3449 	if (flags & WSDISPLAY_CURSOR_DOPOS) {
   3450 		nc.rc_pos = wc->pos;
   3451 		if (nc.rc_pos.x >= dp->rd_virtx)
   3452 			nc.rc_pos.x = dp->rd_virtx - 1;
   3453 #if 0
   3454 		if (nc.rc_pos.x < 0)
   3455 			nc.rc_pos.x = 0;
   3456 #endif
   3457 		if (nc.rc_pos.y >= dp->rd_virty)
   3458 			nc.rc_pos.y = dp->rd_virty - 1;
   3459 #if 0
   3460 		if (nc.rc_pos.y < 0)
   3461 			nc.rc_pos.y = 0;
   3462 #endif
   3463 	}
   3464 	if (flags & WSDISPLAY_CURSOR_DOCUR) {
   3465 		nc.rc_visible = wc->enable;
   3466 	}
   3467 
   3468 	dp->rd_cursor = nc;
   3469 	radeonfb_cursor_update(dp, wc->which);
   3470 
   3471 	return 0;
   3472 }
   3473 
   3474 /*
   3475  * Change the cursor shape.  Call this with the cursor locked to avoid
   3476  * flickering/tearing.
   3477  */
   3478 static void
   3479 radeonfb_cursor_shape(struct radeonfb_display *dp)
   3480 {
   3481 	uint8_t	and[512], xor[512];
   3482 	int	i, j, src, dst, pitch;
   3483 	const uint8_t	*msk = dp->rd_cursor.rc_mask;
   3484 	const uint8_t	*img = dp->rd_cursor.rc_image;
   3485 
   3486 	/*
   3487 	 * Radeon cursor data interleaves one line of AND data followed
   3488 	 * by a line of XOR data.  (Each line corresponds to a whole hardware
   3489 	 * pitch - i.e. 64 pixels or 8 bytes.)
   3490 	 *
   3491 	 * The cursor is displayed using the following table:
   3492 	 *
   3493 	 * AND	XOR	Result
   3494 	 * ----------------------
   3495 	 *  0    0	Cursor color 0
   3496 	 *  0	 1	Cursor color 1
   3497 	 *  1	 0	Transparent
   3498 	 *  1	 1	Complement of background
   3499 	 *
   3500 	 * Our masks are therefore different from what we were passed.
   3501 	 * Passed in, I'm assuming the data represents either color 0 or 1,
   3502 	 * and a mask, so the passed in table looks like:
   3503 	 *
   3504 	 * IMG	Mask	Result
   3505 	 * -----------------------
   3506 	 *  0	 0	Transparent
   3507 	 *  0	 1	Cursor color 0
   3508 	 *  1	 0	Transparent
   3509 	 *  1	 1	Cursor color 1
   3510 	 *
   3511 	 * IF mask bit == 1, AND = 0, XOR = color.
   3512 	 * IF mask bit == 0, AND = 1, XOR = 0.
   3513 	 *
   3514 	 * hence:	AND = ~(mask);	XOR = color & ~(mask);
   3515 	 */
   3516 
   3517 	pitch = ((dp->rd_cursor.rc_size.x + 7) / 8);
   3518 
   3519 	/* start by assuming all bits are transparent */
   3520 	memset(and, 0xff, 512);
   3521 	memset(xor, 0x00, 512);
   3522 
   3523 	src = 0;
   3524 	dst = 0;
   3525 	for (i = 0; i < 64; i++) {
   3526 		for (j = 0; j < 64; j += 8) {
   3527 			if ((i < dp->rd_cursor.rc_size.y) &&
   3528 			    (j < dp->rd_cursor.rc_size.x)) {
   3529 
   3530 				/* take care to leave odd bits alone */
   3531 				and[dst] &= ~(msk[src]);
   3532 				xor[dst] = img[src] & msk[src];
   3533 				src++;
   3534 			}
   3535 			dst++;
   3536 		}
   3537 	}
   3538 
   3539 	/* copy the image into place */
   3540 	for (i = 0; i < 64; i++) {
   3541 		memcpy((uint8_t *)dp->rd_curptr + (i * 16),
   3542 		    &and[i * 8], 8);
   3543 		memcpy((uint8_t *)dp->rd_curptr + (i * 16) + 8,
   3544 		    &xor[i * 8], 8);
   3545 	}
   3546 }
   3547 
   3548 static void
   3549 radeonfb_cursor_position(struct radeonfb_display *dp)
   3550 {
   3551 	struct radeonfb_softc	*sc = dp->rd_softc;
   3552 	uint32_t		offset, hvoff, hvpos;	/* registers */
   3553 	uint32_t		coff;			/* cursor offset */
   3554 	int			i, x, y, xoff, yoff, crtcoff;
   3555 
   3556 	/*
   3557 	 * XXX: this also needs to handle pan/scan
   3558 	 */
   3559 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3560 
   3561 		struct radeonfb_crtc	*rcp = &dp->rd_crtcs[i];
   3562 
   3563 		if (rcp->rc_number) {
   3564 			offset = RADEON_CUR2_OFFSET;
   3565 			hvoff = RADEON_CUR2_HORZ_VERT_OFF;
   3566 			hvpos = RADEON_CUR2_HORZ_VERT_POSN;
   3567 			crtcoff = RADEON_CRTC2_OFFSET;
   3568 		} else {
   3569 			offset = RADEON_CUR_OFFSET;
   3570 			hvoff = RADEON_CUR_HORZ_VERT_OFF;
   3571 			hvpos = RADEON_CUR_HORZ_VERT_POSN;
   3572 			crtcoff = RADEON_CRTC_OFFSET;
   3573 		}
   3574 
   3575 		x = dp->rd_cursor.rc_pos.x;
   3576 		y = dp->rd_cursor.rc_pos.y;
   3577 
   3578 		while (y < rcp->rc_yoffset) {
   3579 			rcp->rc_yoffset -= RADEON_PANINCREMENT;
   3580 		}
   3581 		while (y >= (rcp->rc_yoffset + rcp->rc_videomode.vdisplay)) {
   3582 			rcp->rc_yoffset += RADEON_PANINCREMENT;
   3583 		}
   3584 		while (x < rcp->rc_xoffset) {
   3585 			rcp->rc_xoffset -= RADEON_PANINCREMENT;
   3586 		}
   3587 		while (x >= (rcp->rc_xoffset + rcp->rc_videomode.hdisplay)) {
   3588 			rcp->rc_xoffset += RADEON_PANINCREMENT;
   3589 		}
   3590 
   3591 		/* adjust for the cursor's hotspot */
   3592 		x -= dp->rd_cursor.rc_hot.x;
   3593 		y -= dp->rd_cursor.rc_hot.y;
   3594 		xoff = yoff = 0;
   3595 
   3596 		if (x >= dp->rd_virtx)
   3597 			x = dp->rd_virtx - 1;
   3598 		if (y >= dp->rd_virty)
   3599 			y = dp->rd_virty - 1;
   3600 
   3601 		/* now adjust cursor so it is relative to viewport */
   3602 		x -= rcp->rc_xoffset;
   3603 		y -= rcp->rc_yoffset;
   3604 
   3605 		/*
   3606 		 * no need to check for fall off, because we should
   3607 		 * never move off the screen entirely!
   3608 		 */
   3609 		coff = 0;
   3610 		if (x < 0) {
   3611 			xoff = -x;
   3612 			x = 0;
   3613 		}
   3614 		if (y < 0) {
   3615 			yoff = -y;
   3616 			y = 0;
   3617 			coff = (yoff * 2) * 8;
   3618 		}
   3619 
   3620 		/* pan the display */
   3621 		PUT32(sc, crtcoff, (rcp->rc_yoffset * dp->rd_stride) +
   3622 		    rcp->rc_xoffset);
   3623 
   3624 		PUT32(sc, offset, (dp->rd_curoff + coff) | RADEON_CUR_LOCK);
   3625 		PUT32(sc, hvoff, (xoff << 16) | (yoff) | RADEON_CUR_LOCK);
   3626 		/* NB: this unlocks the cursor */
   3627 		PUT32(sc, hvpos, (x << 16) | y);
   3628 	}
   3629 }
   3630 
   3631 static void
   3632 radeonfb_cursor_visible(struct radeonfb_display *dp)
   3633 {
   3634 	int		i;
   3635 	uint32_t	gencntl, bit;
   3636 
   3637 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3638 		if (dp->rd_crtcs[i].rc_number) {
   3639 			gencntl = RADEON_CRTC2_GEN_CNTL;
   3640 			bit = RADEON_CRTC2_CUR_EN;
   3641 		} else {
   3642 			gencntl = RADEON_CRTC_GEN_CNTL;
   3643 			bit = RADEON_CRTC_CUR_EN;
   3644 		}
   3645 
   3646 		if (dp->rd_cursor.rc_visible)
   3647 			SET32(dp->rd_softc, gencntl, bit);
   3648 		else
   3649 			CLR32(dp->rd_softc, gencntl, bit);
   3650 	}
   3651 }
   3652 
   3653 static void
   3654 radeonfb_cursor_cmap(struct radeonfb_display *dp)
   3655 {
   3656 	int		i;
   3657 	uint32_t	c0reg, c1reg;
   3658 	struct radeonfb_softc	*sc = dp->rd_softc;
   3659 
   3660 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3661 		if (dp->rd_crtcs[i].rc_number) {
   3662 			c0reg = RADEON_CUR2_CLR0;
   3663 			c1reg = RADEON_CUR2_CLR1;
   3664 		} else {
   3665 			c0reg = RADEON_CUR_CLR0;
   3666 			c1reg = RADEON_CUR_CLR1;
   3667 		}
   3668 
   3669 		PUT32(sc, c0reg, dp->rd_cursor.rc_cmap[0]);
   3670 		PUT32(sc, c1reg, dp->rd_cursor.rc_cmap[1]);
   3671 	}
   3672 }
   3673 
   3674 static void
   3675 radeonfb_cursor_update(struct radeonfb_display *dp, unsigned which)
   3676 {
   3677 	struct radeonfb_softc	*sc;
   3678 	int		i;
   3679 
   3680 	sc = dp->rd_softc;
   3681 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3682 		if (dp->rd_crtcs[i].rc_number) {
   3683 			SET32(sc, RADEON_CUR2_OFFSET, RADEON_CUR_LOCK);
   3684 		} else {
   3685 			SET32(sc, RADEON_CUR_OFFSET,RADEON_CUR_LOCK);
   3686 		}
   3687 	}
   3688 
   3689 	if (which & WSDISPLAY_CURSOR_DOCMAP)
   3690 		radeonfb_cursor_cmap(dp);
   3691 
   3692 	if (which & WSDISPLAY_CURSOR_DOSHAPE)
   3693 		radeonfb_cursor_shape(dp);
   3694 
   3695 	if (which & WSDISPLAY_CURSOR_DOCUR)
   3696 		radeonfb_cursor_visible(dp);
   3697 
   3698 	/* this one is unconditional, because it updates other stuff */
   3699 	radeonfb_cursor_position(dp);
   3700 }
   3701 
   3702 static struct videomode *
   3703 radeonfb_best_refresh(struct videomode *m1, struct videomode *m2)
   3704 {
   3705 	int	r1, r2;
   3706 
   3707 	/* otherwise pick the higher refresh rate */
   3708 	r1 = DIVIDE(DIVIDE(m1->dot_clock, m1->htotal), m1->vtotal);
   3709 	r2 = DIVIDE(DIVIDE(m2->dot_clock, m2->htotal), m2->vtotal);
   3710 
   3711 	return (r1 < r2 ? m2 : m1);
   3712 }
   3713 
   3714 static const struct videomode *
   3715 radeonfb_port_mode(struct radeonfb_softc *sc, struct radeonfb_port *rp,
   3716     int x, int y)
   3717 {
   3718 	struct edid_info	*ep = &rp->rp_edid;
   3719 	struct videomode	*vmp = NULL;
   3720 	int			i;
   3721 
   3722 	if (!rp->rp_edid_valid) {
   3723 		/* fallback to safe mode */
   3724 		return radeonfb_modelookup(sc->sc_defaultmode);
   3725 	}
   3726 
   3727 	/* always choose the preferred mode first! */
   3728 	if (ep->edid_preferred_mode) {
   3729 
   3730 		/* XXX: add auto-stretching support for native mode */
   3731 
   3732 		/* this may want panning to occur, btw */
   3733 		if ((ep->edid_preferred_mode->hdisplay <= x) &&
   3734 		    (ep->edid_preferred_mode->vdisplay <= y))
   3735 			return ep->edid_preferred_mode;
   3736 	}
   3737 
   3738 	for (i = 0; i < ep->edid_nmodes; i++) {
   3739 		/*
   3740 		 * We elect to pick a resolution that is too large for
   3741 		 * the monitor than one that is too small.  This means
   3742 		 * that we will prefer to pan rather than to try to
   3743 		 * center a smaller display on a larger screen.  In
   3744 		 * practice, this shouldn't matter because if a
   3745 		 * monitor can support a larger resolution, it can
   3746 		 * probably also support the smaller.  A specific
   3747 		 * exception is fixed format panels, but hopefully
   3748 		 * they are properly dealt with by the "autostretch"
   3749 		 * logic above.
   3750 		 */
   3751 		if ((ep->edid_modes[i].hdisplay > x) ||
   3752 		    (ep->edid_modes[i].vdisplay > y)) {
   3753 			continue;
   3754 		}
   3755 
   3756 		/*
   3757 		 * at this point, the display mode is no larger than
   3758 		 * what we've requested.
   3759 		 */
   3760 		if (vmp == NULL)
   3761 			vmp = &ep->edid_modes[i];
   3762 
   3763 		/* eliminate smaller modes */
   3764 		if ((vmp->hdisplay >= ep->edid_modes[i].hdisplay) ||
   3765 		    (vmp->vdisplay >= ep->edid_modes[i].vdisplay))
   3766 			continue;
   3767 
   3768 		if ((vmp->hdisplay < ep->edid_modes[i].hdisplay) ||
   3769 		    (vmp->vdisplay < ep->edid_modes[i].vdisplay)) {
   3770 			vmp = &ep->edid_modes[i];
   3771 			continue;
   3772 		}
   3773 
   3774 		KASSERT(vmp->hdisplay == ep->edid_modes[i].hdisplay);
   3775 		KASSERT(vmp->vdisplay == ep->edid_modes[i].vdisplay);
   3776 
   3777 		vmp = radeonfb_best_refresh(vmp, &ep->edid_modes[i]);
   3778 	}
   3779 
   3780 	return (vmp ? vmp : radeonfb_modelookup(sc->sc_defaultmode));
   3781 }
   3782 
   3783 static int
   3784 radeonfb_hasres(struct videomode *list, int nlist, int x, int y)
   3785 {
   3786 	int	i;
   3787 
   3788 	for (i = 0; i < nlist; i++) {
   3789 		if ((x == list[i].hdisplay) &&
   3790 		    (y == list[i].vdisplay)) {
   3791 			return 1;
   3792 		}
   3793 	}
   3794 	return 0;
   3795 }
   3796 
   3797 static void
   3798 radeonfb_pickres(struct radeonfb_display *dp, uint16_t *x, uint16_t *y,
   3799     int pan)
   3800 {
   3801 	struct radeonfb_port	*rp;
   3802 	struct edid_info	*ep;
   3803 	int			i, j;
   3804 
   3805 	*x = 0;
   3806 	*y = 0;
   3807 
   3808 	if (pan) {
   3809 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   3810 			rp = dp->rd_crtcs[i].rc_port;
   3811 			ep = &rp->rp_edid;
   3812 			if (!rp->rp_edid_valid) {
   3813 				/* monitor not present */
   3814 				continue;
   3815 			}
   3816 
   3817 			/*
   3818 			 * For now we are ignoring "conflict" that
   3819 			 * could occur when mixing some modes like
   3820 			 * 1280x1024 and 1400x800.  It isn't clear
   3821 			 * which is better, so the first one wins.
   3822 			 */
   3823 			for (j = 0; j < ep->edid_nmodes; j++) {
   3824 				/*
   3825 				 * ignore resolutions that are too big for
   3826 				 * the radeon
   3827 				 */
   3828 				if (ep->edid_modes[j].hdisplay >
   3829 				    dp->rd_softc->sc_maxx)
   3830 					continue;
   3831 				if (ep->edid_modes[j].vdisplay >
   3832 				    dp->rd_softc->sc_maxy)
   3833 					continue;
   3834 
   3835 				/*
   3836 				 * pick largest resolution, the
   3837 				 * smaller monitor will pan
   3838 				 */
   3839 				if ((ep->edid_modes[j].hdisplay >= *x) &&
   3840 				    (ep->edid_modes[j].vdisplay >= *y)) {
   3841 					*x = ep->edid_modes[j].hdisplay;
   3842 					*y = ep->edid_modes[j].vdisplay;
   3843 				}
   3844 			}
   3845 		}
   3846 
   3847 	} else {
   3848 		struct videomode	modes[64];
   3849 		int			nmodes = 0;
   3850 		int			valid = 0;
   3851 
   3852 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   3853 			/*
   3854 			 * pick the largest resolution in common.
   3855 			 */
   3856 			rp = dp->rd_crtcs[i].rc_port;
   3857 			ep = &rp->rp_edid;
   3858 
   3859 			if (!rp->rp_edid_valid)
   3860 				continue;
   3861 
   3862 			if (!valid) {
   3863 				/*
   3864 				 * Pick the preferred mode for this port
   3865 				 * if available.
   3866 				 */
   3867 				if (ep->edid_preferred_mode) {
   3868 					struct videomode *vmp =
   3869 						ep->edid_preferred_mode;
   3870 
   3871 					if ((vmp->hdisplay <=
   3872 					     dp->rd_softc->sc_maxx) &&
   3873 					    (vmp->vdisplay <=
   3874 					     dp->rd_softc->sc_maxy))
   3875 						modes[nmodes++] = *vmp;
   3876 				} else {
   3877 
   3878 					/* initialize starting list */
   3879 					for (j = 0; j < ep->edid_nmodes; j++) {
   3880 						/*
   3881 						 * ignore resolutions that are
   3882 						 * too big for the radeon
   3883 						 */
   3884 						if (ep->edid_modes[j].hdisplay >
   3885 						    dp->rd_softc->sc_maxx)
   3886 							continue;
   3887 						if (ep->edid_modes[j].vdisplay >
   3888 						    dp->rd_softc->sc_maxy)
   3889 							continue;
   3890 
   3891 						modes[nmodes] =
   3892 							ep->edid_modes[j];
   3893 						nmodes++;
   3894 					}
   3895 				}
   3896 				valid = 1;
   3897 			} else {
   3898 				/* merge into preexisting list */
   3899 				for (j = 0; j < nmodes; j++) {
   3900 					if (!radeonfb_hasres(ep->edid_modes,
   3901 						ep->edid_nmodes,
   3902 						modes[j].hdisplay,
   3903 						modes[j].vdisplay)) {
   3904 						modes[j] = modes[nmodes];
   3905 						j--;
   3906 						nmodes--;
   3907 					}
   3908 				}
   3909 			}
   3910 		}
   3911 
   3912 		/* now we have to pick from the merged list */
   3913 		for (i = 0; i < nmodes; i++) {
   3914 			if ((modes[i].hdisplay >= *x) &&
   3915 			    (modes[i].vdisplay >= *y)) {
   3916 				*x = modes[i].hdisplay;
   3917 				*y = modes[i].vdisplay;
   3918 			}
   3919 		}
   3920 	}
   3921 
   3922 	if ((*x == 0) || (*y == 0)) {
   3923 		/* fallback to safe mode */
   3924 		*x = 640;
   3925 		*y = 480;
   3926 	}
   3927 }
   3928 
   3929 /*
   3930  * backlight levels are linear on:
   3931  * - RV200, RV250, RV280, RV350
   3932  * - but NOT on PowerBook4,3 6,3 6,5
   3933  * according to Linux' radeonfb
   3934  */
   3935 
   3936 /* Get the current backlight level for the display.  */
   3937 
   3938 static int
   3939 radeonfb_get_backlight(struct radeonfb_display *dp)
   3940 {
   3941 	int s;
   3942 	uint32_t level;
   3943 
   3944 	s = spltty();
   3945 
   3946 	level = radeonfb_get32(dp->rd_softc, RADEON_LVDS_GEN_CNTL);
   3947 	level &= RADEON_LVDS_BL_MOD_LEV_MASK;
   3948 	level >>= RADEON_LVDS_BL_MOD_LEV_SHIFT;
   3949 
   3950 	/*
   3951 	 * On some chips, we should negate the backlight level.
   3952 	 * XXX Find out on which chips.
   3953 	 */
   3954 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT)
   3955 	level = RADEONFB_BACKLIGHT_MAX - level;
   3956 
   3957 	splx(s);
   3958 
   3959 	return level;
   3960 }
   3961 
   3962 /* Set the backlight to the given level for the display.  */
   3963 static void
   3964 radeonfb_switch_backlight(struct radeonfb_display *dp, int on)
   3965 {
   3966 	if (dp->rd_bl_on == on)
   3967 		return;
   3968 	dp->rd_bl_on = on;
   3969 	radeonfb_set_backlight(dp, dp->rd_bl_level);
   3970 }
   3971 
   3972 static int
   3973 radeonfb_set_backlight(struct radeonfb_display *dp, int level)
   3974 {
   3975 	struct radeonfb_softc *sc;
   3976 	int rlevel, s;
   3977 	uint32_t lvds;
   3978 
   3979 	s = spltty();
   3980 
   3981 	dp->rd_bl_level = level;
   3982 	if (dp->rd_bl_on == 0)
   3983 		level = 0;
   3984 
   3985 	if (level < 0)
   3986 		level = 0;
   3987 	else if (level >= RADEONFB_BACKLIGHT_MAX)
   3988 		level = RADEONFB_BACKLIGHT_MAX;
   3989 
   3990 	sc = dp->rd_softc;
   3991 
   3992 	/* On some chips, we should negate the backlight level. */
   3993 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT) {
   3994 	rlevel = RADEONFB_BACKLIGHT_MAX - level;
   3995 	} else
   3996 	rlevel = level;
   3997 
   3998 	callout_stop(&dp->rd_bl_lvds_co);
   3999 	radeonfb_engine_idle(sc);
   4000 
   4001 	/*
   4002 	 * Turn off the display if the backlight is set to 0, since the
   4003 	 * display is useless without backlight anyway.
   4004 	 */
   4005 	if (level == 0)
   4006 		radeonfb_blank(dp, 1);
   4007 	else if (radeonfb_get_backlight(dp) == 0)
   4008 		radeonfb_blank(dp, 0);
   4009 
   4010 	lvds = radeonfb_get32(sc, RADEON_LVDS_GEN_CNTL);
   4011 	lvds &= ~RADEON_LVDS_DISPLAY_DIS;
   4012 	if (!(lvds & RADEON_LVDS_BLON) || !(lvds & RADEON_LVDS_ON)) {
   4013 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_DIGON;
   4014 		lvds |= RADEON_LVDS_BLON | RADEON_LVDS_EN;
   4015 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   4016 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   4017 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4018 		lvds |= RADEON_LVDS_ON;
   4019 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_BL_MOD_EN;
   4020 	} else {
   4021 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   4022 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4023 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   4024 	}
   4025 
   4026 	dp->rd_bl_lvds_val &= ~RADEON_LVDS_STATE_MASK;
   4027 	dp->rd_bl_lvds_val |= lvds & RADEON_LVDS_STATE_MASK;
   4028 	/* XXX What is the correct delay? */
   4029 	callout_schedule(&dp->rd_bl_lvds_co, 200 * hz);
   4030 
   4031 	splx(s);
   4032 
   4033 	return 0;
   4034 }
   4035 
   4036 /*
   4037  * Callout function for delayed operations on the LVDS_GEN_CNTL register.
   4038  * Set the delayed bits in the register, and clear the stored delayed
   4039  * value.
   4040  */
   4041 
   4042 static void radeonfb_lvds_callout(void *arg)
   4043 {
   4044 	struct radeonfb_display *dp = arg;
   4045 	int s;
   4046 
   4047 	s = splhigh();
   4048 
   4049 	radeonfb_mask32(dp->rd_softc, RADEON_LVDS_GEN_CNTL, ~0,
   4050 			dp->rd_bl_lvds_val);
   4051 	dp->rd_bl_lvds_val = 0;
   4052 
   4053 	splx(s);
   4054 }
   4055 
   4056 static void
   4057 radeonfb_brightness_up(device_t dev)
   4058 {
   4059 	struct radeonfb_softc *sc = device_private(dev);
   4060 	struct radeonfb_display *dp = &sc->sc_displays[0];
   4061 	int level;
   4062 
   4063 	/* we assume the main display is the first one - need a better way */
   4064 	if (sc->sc_ndisplays < 1) return;
   4065 	/* make sure pushing the hotkeys always has an effect */
   4066 	dp->rd_bl_on = 1;
   4067 	level = dp->rd_bl_level;
   4068 	level = min(RADEONFB_BACKLIGHT_MAX, level + 5);
   4069 	radeonfb_set_backlight(dp, level);
   4070 }
   4071 
   4072 static void
   4073 radeonfb_brightness_down(device_t dev)
   4074 {
   4075 	struct radeonfb_softc *sc = device_private(dev);
   4076 	struct radeonfb_display *dp = &sc->sc_displays[0];
   4077 	int level;
   4078 
   4079 	/* we assume the main display is the first one - need a better way */
   4080 	if (sc->sc_ndisplays < 1) return;
   4081 	/* make sure pushing the hotkeys always has an effect */
   4082 	dp->rd_bl_on = 1;
   4083 	level = dp->rd_bl_level;
   4084 	level = max(0, level - 5);
   4085 	radeonfb_set_backlight(dp, level);
   4086 }
   4087