Home | History | Annotate | Line # | Download | only in pci
radeonfb.c revision 1.37
      1 /*	$NetBSD: radeonfb.c,v 1.37 2010/08/24 12:47:17 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 1.37 2010/08/24 12:47:17 macallan Exp $");
     74 
     75 #define RADEONFB_DEFAULT_DEPTH 8
     76 
     77 #include <sys/param.h>
     78 #include <sys/systm.h>
     79 #include <sys/device.h>
     80 #include <sys/malloc.h>
     81 #include <sys/bus.h>
     82 #include <sys/kernel.h>
     83 #include <sys/lwp.h>
     84 #include <sys/kauth.h>
     85 
     86 #include <dev/wscons/wsdisplayvar.h>
     87 #include <dev/wscons/wsconsio.h>
     88 #include <dev/wsfont/wsfont.h>
     89 #include <dev/rasops/rasops.h>
     90 #include <dev/videomode/videomode.h>
     91 #include <dev/videomode/edidvar.h>
     92 #include <dev/wscons/wsdisplay_vconsvar.h>
     93 
     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 
    102 static int radeonfb_match(device_t, cfdata_t, void *);
    103 static void radeonfb_attach(device_t, device_t, void *);
    104 static int radeonfb_ioctl(void *, void *, unsigned long, void *, int,
    105     struct lwp *);
    106 static paddr_t radeonfb_mmap(void *, void *, off_t, int);
    107 static int radeonfb_scratch_test(struct radeonfb_softc *, int, uint32_t);
    108 static void radeonfb_loadbios(struct radeonfb_softc *,
    109     struct pci_attach_args *);
    110 
    111 static uintmax_t radeonfb_getprop_num(struct radeonfb_softc *, const char *,
    112     uintmax_t);
    113 static int radeonfb_getclocks(struct radeonfb_softc *);
    114 static int radeonfb_gettmds(struct radeonfb_softc *);
    115 static int radeonfb_calc_dividers(struct radeonfb_softc *, uint32_t,
    116     uint32_t *, uint32_t *);
    117 static int radeonfb_getconnectors(struct radeonfb_softc *);
    118 static const struct videomode *radeonfb_modelookup(const char *);
    119 static void radeonfb_init_screen(void *, struct vcons_screen *, int, long *);
    120 static void radeonfb_pllwriteupdate(struct radeonfb_softc *, int);
    121 static void radeonfb_pllwaitatomicread(struct radeonfb_softc *, int);
    122 static void radeonfb_program_vclk(struct radeonfb_softc *, int, int);
    123 static void radeonfb_modeswitch(struct radeonfb_display *);
    124 static void radeonfb_setcrtc(struct radeonfb_display *, int);
    125 static void radeonfb_init_misc(struct radeonfb_softc *);
    126 static void radeonfb_set_fbloc(struct radeonfb_softc *);
    127 static void radeonfb_init_palette(struct radeonfb_softc *, int);
    128 static void radeonfb_r300cg_workaround(struct radeonfb_softc *);
    129 
    130 static int radeonfb_isblank(struct radeonfb_display *);
    131 static void radeonfb_blank(struct radeonfb_display *, int);
    132 static int radeonfb_set_cursor(struct radeonfb_display *,
    133     struct wsdisplay_cursor *);
    134 static int radeonfb_set_curpos(struct radeonfb_display *,
    135     struct wsdisplay_curpos *);
    136 
    137 /* acceleration support */
    138 static void  radeonfb_rectfill(struct radeonfb_display *, int dstx, int dsty,
    139     int width, int height, uint32_t color);
    140 static void radeonfb_bitblt(struct radeonfb_display *, int srcx, int srcy,
    141     int dstx, int dsty, int width, int height, int rop, uint32_t mask);
    142 static void radeonfb_feed_bytes(struct radeonfb_display *, int, uint8_t *);
    143 static void radeonfb_setup_mono(struct radeonfb_display *, int, int, int,
    144     int, uint32_t, uint32_t);
    145 
    146 /* hw cursor support */
    147 static void radeonfb_cursor_cmap(struct radeonfb_display *);
    148 static void radeonfb_cursor_shape(struct radeonfb_display *);
    149 static void radeonfb_cursor_position(struct radeonfb_display *);
    150 static void radeonfb_cursor_visible(struct radeonfb_display *);
    151 static void radeonfb_cursor_update(struct radeonfb_display *, unsigned);
    152 
    153 static void radeonfb_wait_fifo(struct radeonfb_softc *, int);
    154 static void radeonfb_engine_idle(struct radeonfb_softc *);
    155 static void radeonfb_engine_flush(struct radeonfb_softc *);
    156 static void radeonfb_engine_reset(struct radeonfb_softc *);
    157 static void radeonfb_engine_init(struct radeonfb_display *);
    158 static inline void radeonfb_unclip(struct radeonfb_softc *);
    159 
    160 static void radeonfb_eraserows(void *, int, int, long);
    161 static void radeonfb_erasecols(void *, int, int, int, long);
    162 static void radeonfb_copyrows(void *, int, int, int);
    163 static void radeonfb_copycols(void *, int, int, int, int);
    164 static void radeonfb_cursor(void *, int, int, int);
    165 static void radeonfb_putchar(void *, int, int, unsigned, long);
    166 static int radeonfb_allocattr(void *, int, int, int, long *);
    167 
    168 static int radeonfb_get_backlight(struct radeonfb_display *);
    169 static int radeonfb_set_backlight(struct radeonfb_display *, int);
    170 static void radeonfb_lvds_callout(void *);
    171 
    172 static void radeonfb_brightness_up(device_t);
    173 static void radeonfb_brightness_down(device_t);
    174 
    175 static struct videomode *radeonfb_best_refresh(struct videomode *,
    176     struct videomode *);
    177 static void radeonfb_pickres(struct radeonfb_display *, uint16_t *,
    178     uint16_t *, int);
    179 static const struct videomode *radeonfb_port_mode(struct radeonfb_softc *,
    180     struct radeonfb_port *, int, int);
    181 
    182 static int radeonfb_drm_print(void *, const char *);
    183 
    184 #ifdef	RADEONFB_DEBUG
    185 int	radeon_debug = 1;
    186 #define	DPRINTF(x)	\
    187 	if (radeon_debug) printf x
    188 #define	PRINTREG(r)	DPRINTF((#r " = %08x\n", GET32(sc, r)))
    189 #define	PRINTPLL(r)	DPRINTF((#r " = %08x\n", GETPLL(sc, r)))
    190 #else
    191 #define	DPRINTF(x)
    192 #define	PRINTREG(r)
    193 #define	PRINTPLL(r)
    194 #endif
    195 
    196 #define	ROUNDUP(x,y)	(((x) + ((y) - 1)) & ~((y) - 1))
    197 
    198 #ifndef	RADEON_DEFAULT_MODE
    199 /* any reasonably modern display should handle this */
    200 #define	RADEON_DEFAULT_MODE	"1024x768x60"
    201 #endif
    202 
    203 extern const u_char rasops_cmap[768];
    204 
    205 const char	*radeonfb_default_mode = RADEON_DEFAULT_MODE;
    206 
    207 static struct {
    208 	int		size;		/* minimum memory size (MB) */
    209 	int		maxx;		/* maximum x dimension */
    210 	int		maxy;		/* maximum y dimension */
    211 	int		maxbpp;		/* maximum bpp */
    212 	int		maxdisp;	/* maximum logical display count */
    213 } radeonfb_limits[] = {
    214 	{ 32,	2048, 1536, 32, 2 },
    215 	{ 16,	1600, 1200, 32, 2 },
    216 	{ 8,	1600, 1200, 32, 1 },
    217 	{ 0,	0, 0, 0, 0 },
    218 };
    219 
    220 static struct wsscreen_descr radeonfb_stdscreen = {
    221 	"fb",		/* name */
    222 	0, 0,		/* ncols, nrows */
    223 	NULL,		/* textops */
    224 	8, 16,		/* fontwidth, fontheight */
    225 	WSSCREEN_WSCOLORS | WSSCREEN_REVERSE, /* capabilities */
    226 	0,		/* modecookie */
    227 };
    228 
    229 struct wsdisplay_accessops radeonfb_accessops = {
    230 	radeonfb_ioctl,
    231 	radeonfb_mmap,
    232 	NULL,		/* vcons_alloc_screen */
    233 	NULL,		/* vcons_free_screen */
    234 	NULL,		/* vcons_show_screen */
    235 	NULL,		/* load_font */
    236 	NULL,		/* pollc */
    237 	NULL,		/* scroll */
    238 };
    239 
    240 static struct {
    241 	uint16_t	devid;
    242 	uint16_t	family;
    243 	uint16_t	flags;
    244 } radeonfb_devices[] =
    245 {
    246 	/* R100 family */
    247 	{ PCI_PRODUCT_ATI_RADEON_R100_QD,	RADEON_R100, 0 },
    248 	{ PCI_PRODUCT_ATI_RADEON_R100_QE,	RADEON_R100, 0 },
    249 	{ PCI_PRODUCT_ATI_RADEON_R100_QF,	RADEON_R100, 0 },
    250 	{ PCI_PRODUCT_ATI_RADEON_R100_QG,	RADEON_R100, 0 },
    251 
    252 	/* RV100 family */
    253 	{ PCI_PRODUCT_ATI_RADEON_RV100_LY,	RADEON_RV100, RFB_MOB },
    254 	{ PCI_PRODUCT_ATI_RADEON_RV100_LZ,	RADEON_RV100, RFB_MOB },
    255 	{ PCI_PRODUCT_ATI_RADEON_RV100_QY,	RADEON_RV100, 0 },
    256 	{ PCI_PRODUCT_ATI_RADEON_RV100_QZ,	RADEON_RV100, 0 },
    257 
    258 	/* RS100 family */
    259 	{ PCI_PRODUCT_ATI_RADEON_RS100_4136,	RADEON_RS100, 0 },
    260 	{ PCI_PRODUCT_ATI_RADEON_RS100_4336,	RADEON_RS100, RFB_MOB },
    261 
    262 	/* RS200/RS250 family */
    263 	{ PCI_PRODUCT_ATI_RADEON_RS200_4337,	RADEON_RS200, RFB_MOB },
    264 	{ PCI_PRODUCT_ATI_RADEON_RS200_A7,	RADEON_RS200, 0 },
    265 	{ PCI_PRODUCT_ATI_RADEON_RS250_B7,	RADEON_RS200, RFB_MOB },
    266 	{ PCI_PRODUCT_ATI_RADEON_RS250_D7,	RADEON_RS200, 0 },
    267 
    268 	/* R200 family */
    269 	/* add more R200 products? , 5148 */
    270 	{ PCI_PRODUCT_ATI_RADEON_R200_BB,	RADEON_R200, 0 },
    271 	{ PCI_PRODUCT_ATI_RADEON_R200_BC,	RADEON_R200, 0 },
    272 	{ PCI_PRODUCT_ATI_RADEON_R200_QH,	RADEON_R200, 0 },
    273 	{ PCI_PRODUCT_ATI_RADEON_R200_QL,	RADEON_R200, 0 },
    274 	{ PCI_PRODUCT_ATI_RADEON_R200_QM,	RADEON_R200, 0 },
    275 
    276 	/* RV200 family */
    277 	{ PCI_PRODUCT_ATI_RADEON_RV200_LW,	RADEON_RV200, RFB_MOB },
    278 	{ PCI_PRODUCT_ATI_RADEON_RV200_LX,	RADEON_RV200, RFB_MOB },
    279 	{ PCI_PRODUCT_ATI_RADEON_RV200_QW,	RADEON_RV200, 0 },
    280 	{ PCI_PRODUCT_ATI_RADEON_RV200_QX,	RADEON_RV200, 0 },
    281 
    282 	/* RV250 family */
    283 	{ PCI_PRODUCT_ATI_RADEON_RV250_4966,	RADEON_RV250, 0 },
    284 	{ PCI_PRODUCT_ATI_RADEON_RV250_4967,	RADEON_RV250, 0 },
    285 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C64,	RADEON_RV250, RFB_MOB },
    286 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C66,	RADEON_RV250, RFB_MOB },
    287 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C67,	RADEON_RV250, RFB_MOB },
    288 
    289 	/* RS300 family */
    290 	{ PCI_PRODUCT_ATI_RADEON_RS300_X5,	RADEON_RS300, 0 },
    291 	{ PCI_PRODUCT_ATI_RADEON_RS300_X4,	RADEON_RS300, 0 },
    292 	{ PCI_PRODUCT_ATI_RADEON_RS300_7834,	RADEON_RS300, 0 },
    293 	{ PCI_PRODUCT_ATI_RADEON_RS300_7835,	RADEON_RS300, RFB_MOB },
    294 
    295 	/* RV280 family */
    296 	{ PCI_PRODUCT_ATI_RADEON_RV280_5960,	RADEON_RV280, 0 },
    297 	{ PCI_PRODUCT_ATI_RADEON_RV280_5961,	RADEON_RV280, 0 },
    298 	{ PCI_PRODUCT_ATI_RADEON_RV280_5962,	RADEON_RV280, 0 },
    299 	{ PCI_PRODUCT_ATI_RADEON_RV280_5963,	RADEON_RV280, 0 },
    300 	{ PCI_PRODUCT_ATI_RADEON_RV280_5964,	RADEON_RV280, 0 },
    301 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C61,	RADEON_RV280, RFB_MOB },
    302 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C63,	RADEON_RV280, RFB_MOB },
    303 
    304 	/* R300 family */
    305 	{ PCI_PRODUCT_ATI_RADEON_R300_AD,	RADEON_R300, 0 },
    306 	{ PCI_PRODUCT_ATI_RADEON_R300_AE,	RADEON_R300, 0 },
    307 	{ PCI_PRODUCT_ATI_RADEON_R300_AF,	RADEON_R300, 0 },
    308 	{ PCI_PRODUCT_ATI_RADEON_R300_AG,	RADEON_R300, 0 },
    309 	{ PCI_PRODUCT_ATI_RADEON_R300_ND,	RADEON_R300, 0 },
    310 	{ PCI_PRODUCT_ATI_RADEON_R300_NE,	RADEON_R300, 0 },
    311 	{ PCI_PRODUCT_ATI_RADEON_R300_NF,	RADEON_R300, 0 },
    312 	{ PCI_PRODUCT_ATI_RADEON_R300_NG,	RADEON_R300, 0 },
    313 
    314 	/* RV350/RV360 family */
    315 	{ PCI_PRODUCT_ATI_RADEON_RV350_AP,	RADEON_RV350, 0 },
    316 	{ PCI_PRODUCT_ATI_RADEON_RV350_AQ,	RADEON_RV350, 0 },
    317 	{ PCI_PRODUCT_ATI_RADEON_RV360_AR,	RADEON_RV350, 0 },
    318 	{ PCI_PRODUCT_ATI_RADEON_RV350_AS,	RADEON_RV350, 0 },
    319 	{ PCI_PRODUCT_ATI_RADEON_RV350_AT,	RADEON_RV350, 0 },
    320 	{ PCI_PRODUCT_ATI_RADEON_RV350_AV,	RADEON_RV350, 0 },
    321 	{ PCI_PRODUCT_ATI_RADEON_RV350_NP,	RADEON_RV350, RFB_MOB },
    322 	{ PCI_PRODUCT_ATI_RADEON_RV350_NQ,	RADEON_RV350, RFB_MOB },
    323 	{ PCI_PRODUCT_ATI_RADEON_RV350_NR,	RADEON_RV350, RFB_MOB },
    324 	{ PCI_PRODUCT_ATI_RADEON_RV350_NS,	RADEON_RV350, RFB_MOB },
    325 	{ PCI_PRODUCT_ATI_RADEON_RV350_NT,	RADEON_RV350, RFB_MOB },
    326 	{ PCI_PRODUCT_ATI_RADEON_RV350_NV,	RADEON_RV350, RFB_MOB },
    327 
    328 	/* R350/R360 family */
    329 	{ PCI_PRODUCT_ATI_RADEON_R350_AH,	RADEON_R350, 0 },
    330 	{ PCI_PRODUCT_ATI_RADEON_R350_AI,	RADEON_R350, 0 },
    331 	{ PCI_PRODUCT_ATI_RADEON_R350_AJ,	RADEON_R350, 0 },
    332 	{ PCI_PRODUCT_ATI_RADEON_R350_AK,	RADEON_R350, 0 },
    333 	{ PCI_PRODUCT_ATI_RADEON_R350_NH,	RADEON_R350, 0 },
    334 	{ PCI_PRODUCT_ATI_RADEON_R350_NI,	RADEON_R350, 0 },
    335 	{ PCI_PRODUCT_ATI_RADEON_R350_NK,	RADEON_R350, 0 },
    336 	{ PCI_PRODUCT_ATI_RADEON_R360_NJ,	RADEON_R350, 0 },
    337 
    338 	/* RV380/RV370 family */
    339 	{ PCI_PRODUCT_ATI_RADEON_RV380_3150,	RADEON_RV380, RFB_MOB },
    340 	{ PCI_PRODUCT_ATI_RADEON_RV380_3154,	RADEON_RV380, RFB_MOB },
    341 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E50,	RADEON_RV380, 0 },
    342 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E54,	RADEON_RV380, 0 },
    343 	{ PCI_PRODUCT_ATI_RADEON_RV370_5460,	RADEON_RV380, RFB_MOB },
    344 	{ PCI_PRODUCT_ATI_RADEON_RV370_5464,	RADEON_RV380, RFB_MOB },
    345 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B60,	RADEON_RV380, 0 },
    346 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B64,	RADEON_RV380, 0 },
    347 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B65,	RADEON_RV380, 0 },
    348 
    349 	/* R420/R423 family */
    350 	{ PCI_PRODUCT_ATI_RADEON_R420_JH,	RADEON_R420, 0 },
    351 	{ PCI_PRODUCT_ATI_RADEON_R420_JI,	RADEON_R420, 0 },
    352 	{ PCI_PRODUCT_ATI_RADEON_R420_JJ,	RADEON_R420, 0 },
    353 	{ PCI_PRODUCT_ATI_RADEON_R420_JK,	RADEON_R420, 0 },
    354 	{ PCI_PRODUCT_ATI_RADEON_R420_JL,	RADEON_R420, 0 },
    355 	{ PCI_PRODUCT_ATI_RADEON_R420_JM,	RADEON_R420, 0 },
    356 	{ PCI_PRODUCT_ATI_RADEON_R420_JN,	RADEON_R420, RFB_MOB },
    357 	{ PCI_PRODUCT_ATI_RADEON_R420_JP,	RADEON_R420, 0 },
    358 	{ PCI_PRODUCT_ATI_RADEON_R423_UH,	RADEON_R420, 0 },
    359 	{ PCI_PRODUCT_ATI_RADEON_R423_UI,	RADEON_R420, 0 },
    360 	{ PCI_PRODUCT_ATI_RADEON_R423_UJ,	RADEON_R420, 0 },
    361 	{ PCI_PRODUCT_ATI_RADEON_R423_UK,	RADEON_R420, 0 },
    362 	{ PCI_PRODUCT_ATI_RADEON_R423_UQ,	RADEON_R420, 0 },
    363 	{ PCI_PRODUCT_ATI_RADEON_R423_UR,	RADEON_R420, 0 },
    364 	{ PCI_PRODUCT_ATI_RADEON_R423_UT,	RADEON_R420, 0 },
    365 	{ PCI_PRODUCT_ATI_RADEON_R423_5D57,	RADEON_R420, 0 },
    366 	{ PCI_PRODUCT_ATI_RADEON_R430_554F,	RADEON_R420, 0 },
    367 
    368 	{ 0, 0, 0 }
    369 };
    370 
    371 static struct {
    372 	int divider;
    373 	int mask;
    374 } radeonfb_dividers[] = {
    375 	{  1, 0 },
    376 	{  2, 1 },
    377 	{  3, 4 },
    378 	{  4, 2 },
    379 	{  6, 6 },
    380 	{  8, 3 },
    381 	{ 12, 7 },
    382 	{  0, 0 }
    383 };
    384 
    385 /*
    386  * This table taken from X11.
    387  */
    388 static const struct {
    389 	int			family;
    390 	struct radeon_tmds_pll	plls[4];
    391 } radeonfb_tmds_pll[] = {
    392 	{ RADEON_R100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    393 	{ RADEON_RV100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    394 	{ RADEON_RS100, {{0, 0}}},
    395 	{ RADEON_RV200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    396 	{ RADEON_RS200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    397 	{ RADEON_R200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    398 	{ RADEON_RV250,	{{15500, 0x81b}, {-1, 0x83f}}},
    399 	{ RADEON_RS300, {{0, 0}}},
    400 	{ RADEON_RV280,	{{13000, 0x400f4}, {15000, 0x400f7}}},
    401 	{ RADEON_R300,	{{-1, 0xb01cb}}},
    402 	{ RADEON_R350,	{{-1, 0xb01cb}}},
    403 	{ RADEON_RV350,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    404 	{ RADEON_RV380,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    405 	{ RADEON_R420,	{{-1, 0xb01cb}}},
    406 };
    407 
    408 #define RADEONFB_BACKLIGHT_MAX    255  /* Maximum backlight level. */
    409 
    410 
    411 CFATTACH_DECL(radeonfb, sizeof (struct radeonfb_softc),
    412     radeonfb_match, radeonfb_attach, NULL, NULL);
    413 
    414 static int
    415 radeonfb_match(device_t parent, cfdata_t match, void *aux)
    416 {
    417 	struct pci_attach_args	*pa = aux;
    418 	int			i;
    419 
    420 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_ATI)
    421 		return 0;
    422 
    423 	for (i = 0; radeonfb_devices[i].devid; i++) {
    424 		if (PCI_PRODUCT(pa->pa_id) == radeonfb_devices[i].devid)
    425 			return 100;	/* high to defeat VGA/VESA */
    426 	}
    427 
    428 	return 0;
    429 }
    430 
    431 static void
    432 radeonfb_attach(device_t parent, device_t dev, void *aux)
    433 {
    434 	struct radeonfb_softc	*sc = device_private(dev);
    435 	struct pci_attach_args	*pa = aux;
    436 	const char		*mptr;
    437 	bus_size_t		bsz;
    438 	pcireg_t		screg;
    439 	int			i, j, fg, bg, ul, flags;
    440 	uint32_t		v;
    441 
    442 	sc->sc_id = pa->pa_id;
    443 	for (i = 0; radeonfb_devices[i].devid; i++) {
    444 		if (PCI_PRODUCT(sc->sc_id) == radeonfb_devices[i].devid)
    445 			break;
    446 	}
    447 
    448 	pci_devinfo(sc->sc_id, pa->pa_class, 0, sc->sc_devinfo,
    449 	    sizeof(sc->sc_devinfo));
    450 
    451 	aprint_naive("\n");
    452 	aprint_normal(": %s\n", sc->sc_devinfo);
    453 
    454 	DPRINTF((prop_dictionary_externalize(device_properties(dev))));
    455 
    456 	KASSERT(radeonfb_devices[i].devid != 0);
    457 	sc->sc_pt = pa->pa_tag;
    458 	sc->sc_iot = pa->pa_iot;
    459 	sc->sc_pc = pa->pa_pc;
    460 	sc->sc_family = radeonfb_devices[i].family;
    461 	sc->sc_flags = radeonfb_devices[i].flags;
    462 
    463 	/* enable memory and IO access */
    464 	screg = pci_conf_read(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG);
    465 	screg |= PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED;
    466 	pci_conf_write(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG, screg);
    467 
    468 	/*
    469 	 * Some flags are general to entire chip families, and rather
    470 	 * than clutter up the table with them, we go ahead and set
    471 	 * them here.
    472 	 */
    473 	switch (sc->sc_family) {
    474 	case RADEON_RS100:
    475 	case RADEON_RS200:
    476 		sc->sc_flags |= RFB_IGP | RFB_RV100;
    477 		break;
    478 
    479 	case RADEON_RV100:
    480 	case RADEON_RV200:
    481 	case RADEON_RV250:
    482 	case RADEON_RV280:
    483 		sc->sc_flags |= RFB_RV100;
    484 		break;
    485 
    486 	case RADEON_RS300:
    487 		sc->sc_flags |= RFB_SDAC | RFB_IGP | RFB_RV100;
    488 		break;
    489 
    490 	case RADEON_R300:
    491 	case RADEON_RV350:
    492 	case RADEON_R350:
    493 	case RADEON_RV380:
    494 	case RADEON_R420:
    495 		/* newer chips */
    496 		sc->sc_flags |= RFB_R300;
    497 		break;
    498 
    499 	case RADEON_R100:
    500 		sc->sc_flags |= RFB_NCRTC2;
    501 		break;
    502 	}
    503 
    504 	if ((sc->sc_family == RADEON_RV200) ||
    505 	    (sc->sc_family == RADEON_RV250) ||
    506 	    (sc->sc_family == RADEON_RV280) ||
    507 	    (sc->sc_family == RADEON_RV350)) {
    508 		bool inverted = 0;
    509 		/* backlight level is linear */
    510 		DPRINTF(("found RV* chip, backlight is supposedly linear\n"));
    511 		prop_dictionary_get_bool(device_properties(&sc->sc_dev),
    512 		    "backlight_level_reverted", &inverted);
    513 		if (inverted) {
    514 			DPRINTF(("nope, it's inverted\n"));
    515 			sc->sc_flags |= RFB_INV_BLIGHT;
    516 		}
    517 	} else
    518 		sc->sc_flags |= RFB_INV_BLIGHT;
    519 
    520 	/*
    521 	 * XXX: to support true multihead, this must change.
    522 	 */
    523 	sc->sc_ndisplays = 1;
    524 
    525 	/* XXX: */
    526 	if (!HAS_CRTC2(sc)) {
    527 		sc->sc_ndisplays = 1;
    528 	}
    529 
    530 	if (pci_mapreg_map(pa, RADEON_MAPREG_MMIO, PCI_MAPREG_TYPE_MEM,	0,
    531 		&sc->sc_regt, &sc->sc_regh, &sc->sc_regaddr,
    532 		&sc->sc_regsz) != 0) {
    533 		aprint_error("%s: unable to map registers!\n", XNAME(sc));
    534 		goto error;
    535 	}
    536 
    537 	if (pci_mapreg_info(sc->sc_pc, sc->sc_pt, PCI_MAPREG_ROM,
    538 	     PCI_MAPREG_TYPE_ROM, &sc->sc_romaddr, &sc->sc_romsz, &flags) != 0)
    539 	{
    540 		aprint_error("%s: unable to find ROM!\n", XNAME(sc));
    541 		goto error;
    542 	}
    543 	sc->sc_romt = sc->sc_memt;
    544 
    545 	/* scratch register test... */
    546 	if (radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0x55555555) ||
    547 	    radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0xaaaaaaaa)) {
    548 		aprint_error("%s: scratch register test failed!\n", XNAME(sc));
    549 		goto error;
    550 	}
    551 
    552 	PRINTREG(RADEON_BIOS_4_SCRATCH);
    553 	PRINTREG(RADEON_FP_GEN_CNTL);
    554 	sc->sc_fp_gen_cntl = GET32(sc, RADEON_FP_GEN_CNTL);
    555 	PRINTREG(RADEON_FP2_GEN_CNTL);
    556 	PRINTREG(RADEON_TMDS_CNTL);
    557 	PRINTREG(RADEON_TMDS_TRANSMITTER_CNTL);
    558 	PRINTREG(RADEON_TMDS_PLL_CNTL);
    559 	PRINTREG(RADEON_LVDS_GEN_CNTL);
    560 	PRINTREG(RADEON_FP_HORZ_STRETCH);
    561 	PRINTREG(RADEON_FP_VERT_STRETCH);
    562 
    563 	/* XXX: RV100 specific */
    564 	PUT32(sc, RADEON_TMDS_PLL_CNTL, 0xa27);
    565 
    566 	PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    567 	    RADEON_TMDS_TRANSMITTER_PLLEN,
    568 	    RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST);
    569 
    570 	radeonfb_i2c_init(sc);
    571 
    572 	radeonfb_loadbios(sc, pa);
    573 
    574 #ifdef	RADEON_BIOS_INIT
    575 	if (radeonfb_bios_init(sc)) {
    576 		aprint_error("%s: BIOS inititialization failed\n", XNAME(sc));
    577 		goto error;
    578 	}
    579 #endif
    580 
    581 	if (radeonfb_getclocks(sc)) {
    582 		aprint_error("%s: Unable to get reference clocks from BIOS\n",
    583 		    XNAME(sc));
    584 		goto error;
    585 	}
    586 
    587 	if (radeonfb_gettmds(sc)) {
    588 		aprint_error("%s: Unable to identify TMDS PLL settings\n",
    589 		    XNAME(sc));
    590 		goto error;
    591 	}
    592 
    593 	aprint_verbose("%s: refclk = %d.%03d MHz, refdiv = %d "
    594 	    "minpll = %d, maxpll = %d\n", XNAME(sc),
    595 	    (int)sc->sc_refclk / 1000, (int)sc->sc_refclk % 1000,
    596 	    (int)sc->sc_refdiv, (int)sc->sc_minpll, (int)sc->sc_maxpll);
    597 
    598 	radeonfb_getconnectors(sc);
    599 
    600 	radeonfb_set_fbloc(sc);
    601 
    602 	for (i = 0; radeonfb_limits[i].size; i++) {
    603 		if (sc->sc_memsz >= radeonfb_limits[i].size) {
    604 			sc->sc_maxx = radeonfb_limits[i].maxx;
    605 			sc->sc_maxy = radeonfb_limits[i].maxy;
    606 			sc->sc_maxbpp = radeonfb_limits[i].maxbpp;
    607 			/* framebuffer offset, start at a 4K page */
    608 			sc->sc_fboffset = sc->sc_memsz /
    609 			    radeonfb_limits[i].maxdisp;
    610 			/*
    611 			 * we use the fbsize to figure out where we can store
    612 			 * things like cursor data.
    613 			 */
    614 			sc->sc_fbsize =
    615 			    ROUNDUP(ROUNDUP(sc->sc_maxx * sc->sc_maxbpp / 8 ,
    616 					RADEON_STRIDEALIGN) * sc->sc_maxy,
    617 				4096);
    618 			break;
    619 		}
    620 	}
    621 
    622 
    623 	radeonfb_init_misc(sc);
    624 	radeonfb_init_palette(sc, 0);
    625 	if (HAS_CRTC2(sc))
    626 		radeonfb_init_palette(sc, 1);
    627 
    628 	/* program the DAC wirings */
    629 	for (i = 0; i < (HAS_CRTC2(sc) ? 2 : 1); i++) {
    630 		switch (sc->sc_ports[i].rp_dac_type) {
    631 		case RADEON_DAC_PRIMARY:
    632 			PATCH32(sc, RADEON_DAC_CNTL2,
    633 			    i ? RADEON_DAC2_DAC_CLK_SEL : 0,
    634 			    ~RADEON_DAC2_DAC_CLK_SEL);
    635 			break;
    636 		case RADEON_DAC_TVDAC:
    637 			/* we always use the TVDAC to drive a secondary analog
    638 			 * CRT for now.  if we ever support TV-out this will
    639 			 * have to change.
    640 			 */
    641 			SET32(sc, RADEON_DAC_CNTL2,
    642 			    RADEON_DAC2_DAC2_CLK_SEL);
    643 			PATCH32(sc, RADEON_DISP_HW_DEBUG,
    644 			    i ? 0 : RADEON_CRT2_DISP1_SEL,
    645 			    ~RADEON_CRT2_DISP1_SEL);
    646 			break;
    647 		}
    648 	}
    649 	PRINTREG(RADEON_DAC_CNTL2);
    650 	PRINTREG(RADEON_DISP_HW_DEBUG);
    651 
    652 	/* other DAC programming */
    653 	v = GET32(sc, RADEON_DAC_CNTL);
    654 	v &= (RADEON_DAC_RANGE_CNTL_MASK | RADEON_DAC_BLANKING);
    655 	v |= RADEON_DAC_MASK_ALL | RADEON_DAC_8BIT_EN;
    656 	PUT32(sc, RADEON_DAC_CNTL, v);
    657 	PRINTREG(RADEON_DAC_CNTL);
    658 
    659 	/* XXX: this may need more investigation */
    660 	PUT32(sc, RADEON_TV_DAC_CNTL, 0x00280203);
    661 	PRINTREG(RADEON_TV_DAC_CNTL);
    662 
    663 	/* enable TMDS */
    664 	SET32(sc, RADEON_FP_GEN_CNTL,
    665 	    RADEON_FP_TMDS_EN |
    666 		RADEON_FP_CRTC_DONT_SHADOW_VPAR |
    667 		RADEON_FP_CRTC_DONT_SHADOW_HEND);
    668 	/*
    669 	 * XXX
    670 	 * no idea why this is necessary - if I do not clear this bit on my
    671 	 * iBook G4 the screen remains black, even though it's already clear.
    672 	 * It needs to be set on my Sun XVR-100 for the DVI port to work
    673 	 */
    674 
    675 	if (sc->sc_fp_gen_cntl & RADEON_FP_SEL_CRTC2) {
    676 		SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    677 	} else
    678 		CLR32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    679 
    680 	if (HAS_CRTC2(sc))
    681 		SET32(sc, RADEON_FP2_GEN_CNTL, RADEON_FP2_SRC_SEL_CRTC2);
    682 
    683 	/*
    684 	 * we use bus_space_map instead of pci_mapreg, because we don't
    685 	 * need the full aperature space.  no point in wasting virtual
    686 	 * address space we don't intend to use, right?
    687 	 */
    688 	if ((sc->sc_memsz < (4096 * 1024)) ||
    689 	    (pci_mapreg_info(sc->sc_pc, sc->sc_pt, RADEON_MAPREG_VRAM,
    690 		PCI_MAPREG_TYPE_MEM, &sc->sc_memaddr, &bsz, NULL) != 0) ||
    691 	    (bsz < sc->sc_memsz)) {
    692 		sc->sc_memsz = 0;
    693 		aprint_error("%s: Bad frame buffer configuration\n",
    694 		    XNAME(sc));
    695 		goto error;
    696 	}
    697 
    698 	/* 64 MB should be enough -- more just wastes map entries */
    699 	if (sc->sc_memsz > (64 << 20))
    700 		sc->sc_memsz = (64 << 20);
    701 
    702 	sc->sc_memt = pa->pa_memt;
    703 	if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
    704 		BUS_SPACE_MAP_LINEAR, &sc->sc_memh) != 0) {
    705 		sc->sc_memsz = 0;
    706 		aprint_error("%s: Unable to map frame buffer\n", XNAME(sc));
    707 		goto error;
    708 	}
    709 
    710 	aprint_normal("%s: %d MB aperture at 0x%08x, "
    711 	    "%d KB registers at 0x%08x\n", XNAME(sc),
    712 	    (int)sc->sc_memsz >> 20, (unsigned)sc->sc_memaddr,
    713 	    (int)sc->sc_regsz >> 10, (unsigned)sc->sc_regaddr);
    714 
    715 	/* setup default video mode from devprop (allows PROM override) */
    716 	sc->sc_defaultmode = radeonfb_default_mode;
    717 	if (prop_dictionary_get_cstring_nocopy(device_properties(&sc->sc_dev),
    718 	    "videomode", &mptr)) {
    719 
    720 		strncpy(sc->sc_modebuf, mptr, sizeof(sc->sc_modebuf));
    721 		sc->sc_defaultmode = sc->sc_modebuf;
    722 	}
    723 
    724 	/* initialize some basic display parameters */
    725 	for (i = 0; i < sc->sc_ndisplays; i++) {
    726 		struct radeonfb_display *dp = &sc->sc_displays[i];
    727 		struct rasops_info *ri;
    728 		long defattr;
    729 		struct wsemuldisplaydev_attach_args aa;
    730 
    731 		/*
    732 		 * Figure out how many "displays" (desktops) we are going to
    733 		 * support.  If more than one, then each CRTC gets its own
    734 		 * programming.
    735 		 *
    736 		 * XXX: this code needs to change to support mergedfb.
    737 		 * XXX: would be nice to allow this to be overridden
    738 		 */
    739 		if (HAS_CRTC2(sc) && (sc->sc_ndisplays == 1)) {
    740 			DPRINTF(("dual crtcs!\n"));
    741 			dp->rd_ncrtcs = 2;
    742 			dp->rd_crtcs[0].rc_number = 0;
    743 			dp->rd_crtcs[1].rc_number = 1;
    744 		} else {
    745 			dp->rd_ncrtcs = 1;
    746 			dp->rd_crtcs[0].rc_number = i;
    747 		}
    748 
    749 		/* set up port pointer */
    750 		for (j = 0; j < dp->rd_ncrtcs; j++) {
    751 			dp->rd_crtcs[j].rc_port =
    752 			    &sc->sc_ports[dp->rd_crtcs[j].rc_number];
    753 		}
    754 
    755 		dp->rd_softc = sc;
    756 		dp->rd_wsmode = WSDISPLAYIO_MODE_EMUL;
    757 		dp->rd_bg = WS_DEFAULT_BG;
    758 #if 0
    759 		dp->rd_bpp = sc->sc_maxbpp;	/* XXX: for now */
    760 #else
    761 		dp->rd_bpp = RADEONFB_DEFAULT_DEPTH;	/* XXX */
    762 #endif
    763 		/* for text mode, we pick a resolution that won't
    764 		 * require panning */
    765 		radeonfb_pickres(dp, &dp->rd_virtx, &dp->rd_virty, 0);
    766 
    767 		aprint_normal("%s: display %d: "
    768 		    "initial virtual resolution %dx%d at %d bpp\n",
    769 		    XNAME(sc), i, dp->rd_virtx, dp->rd_virty, dp->rd_bpp);
    770 
    771 		/* now select the *video mode* that we will use */
    772 		for (j = 0; j < dp->rd_ncrtcs; j++) {
    773 			const struct videomode *vmp;
    774 			vmp = radeonfb_port_mode(sc, dp->rd_crtcs[j].rc_port,
    775 			    dp->rd_virtx, dp->rd_virty);
    776 
    777 			/*
    778 			 * virtual resolution should be at least as high as
    779 			 * physical
    780 			 */
    781 			if (dp->rd_virtx < vmp->hdisplay ||
    782 			    dp->rd_virty < vmp->vdisplay) {
    783 				dp->rd_virtx = vmp->hdisplay;
    784 				dp->rd_virty = vmp->vdisplay;
    785 			}
    786 
    787 			dp->rd_crtcs[j].rc_videomode = *vmp;
    788 			printf("%s: port %d: physical %dx%d %dHz\n",
    789 			    XNAME(sc), j, vmp->hdisplay, vmp->vdisplay,
    790 			    DIVIDE(DIVIDE(vmp->dot_clock * 1000,
    791 				       vmp->htotal), vmp->vtotal));
    792 		}
    793 
    794 		/* N.B.: radeon wants 64-byte aligned stride */
    795 		dp->rd_stride = dp->rd_virtx * dp->rd_bpp / 8;
    796 		dp->rd_stride = ROUNDUP(dp->rd_stride, RADEON_STRIDEALIGN);
    797 
    798 		dp->rd_offset = sc->sc_fboffset * i;
    799 		dp->rd_fbptr = (vaddr_t)bus_space_vaddr(sc->sc_memt,
    800 		    sc->sc_memh) + dp->rd_offset;
    801 		dp->rd_curoff = sc->sc_fbsize;
    802 		dp->rd_curptr = dp->rd_fbptr + dp->rd_curoff;
    803 
    804 		DPRINTF(("fpbtr = %p\n", (void *)dp->rd_fbptr));
    805 
    806 		switch (dp->rd_bpp) {
    807 		case 8:
    808 			dp->rd_format = 2;
    809 			break;
    810 		case 32:
    811 			dp->rd_format = 6;
    812 			break;
    813 		default:
    814 			aprint_error("%s: bad depth %d\n", XNAME(sc),
    815 			    dp->rd_bpp);
    816 			goto error;
    817 		}
    818 
    819 		DPRINTF("init engine\n");
    820 		/* XXX: this seems suspicious - per display engine
    821 		   initialization? */
    822 		radeonfb_engine_init(dp);
    823 
    824 		/* copy the template into place */
    825 		dp->rd_wsscreens_storage[0] = radeonfb_stdscreen;
    826 		dp->rd_wsscreens = dp->rd_wsscreens_storage;
    827 
    828 		/* and make up the list */
    829 		dp->rd_wsscreenlist.nscreens = 1;
    830 		dp->rd_wsscreenlist.screens =
    831 		    (const struct wsscreen_descr **)&dp->rd_wsscreens;
    832 
    833 		vcons_init(&dp->rd_vd, dp, dp->rd_wsscreens,
    834 		    &radeonfb_accessops);
    835 
    836 		dp->rd_vd.init_screen = radeonfb_init_screen;
    837 
    838 		dp->rd_console = 0;
    839 		prop_dictionary_get_bool(device_properties(&sc->sc_dev),
    840 		    "is_console", &dp->rd_console);
    841 
    842 		dp->rd_vscreen.scr_flags |= VCONS_SCREEN_IS_STATIC;
    843 
    844 
    845 		vcons_init_screen(&dp->rd_vd, &dp->rd_vscreen,
    846 		    dp->rd_console, &defattr);
    847 
    848 		ri = &dp->rd_vscreen.scr_ri;
    849 
    850 		/* clear the screen */
    851 		rasops_unpack_attr(defattr, &fg, &bg, &ul);
    852 		radeonfb_rectfill(dp, 0, 0, ri->ri_width, ri->ri_height,
    853 		    ri->ri_devcmap[bg & 0xf]);
    854 
    855 		dp->rd_wsscreens->textops = &ri->ri_ops;
    856 		dp->rd_wsscreens->capabilities = ri->ri_caps;
    857 		dp->rd_wsscreens->nrows = ri->ri_rows;
    858 		dp->rd_wsscreens->ncols = ri->ri_cols;
    859 
    860 #ifdef SPLASHSCREEN
    861 		dp->rd_splash.si_depth = ri->ri_depth;
    862 		dp->rd_splash.si_bits = ri->ri_bits;
    863 		dp->rd_splash.si_hwbits = ri->ri_hwbits;
    864 		dp->rd_splash.si_width = ri->ri_width;
    865 		dp->rd_splash.si_height = ri->ri_height;
    866 		dp->rd_splash.si_stride = ri->ri_stride;
    867 		dp->rd_splash.si_fillrect = NULL;
    868 #endif
    869 		if (dp->rd_console) {
    870 
    871 			radeonfb_modeswitch(dp);
    872 			wsdisplay_cnattach(dp->rd_wsscreens, ri, 0, 0,
    873 			    defattr);
    874 #ifdef SPLASHSCREEN
    875 			splash_render(&dp->rd_splash,
    876 			    SPLASH_F_CENTER|SPLASH_F_FILL);
    877 #else
    878 			vcons_replay_msgbuf(&dp->rd_vscreen);
    879 #endif
    880 
    881 #ifdef SPLASHSCREEN_PROGRESS
    882 			dp->rd_progress.sp_top = (dp->rd_virty / 8) * 7;
    883 			dp->rd_progress.sp_width = (dp->rd_virtx / 4) * 3;
    884 			dp->rd_progress.sp_left = (dp->rd_virtx -
    885 			    dp->rd_progress.sp_width) / 2;
    886 			dp->rd_progress.sp_height = 20;
    887 			dp->rd_progress.sp_state = -1;
    888 			dp->rd_progress.sp_si = &dp->rd_splash;
    889 			splash_progress_init(&dp->rd_progress);
    890 			SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    891 #endif
    892 
    893 		} else {
    894 
    895 			/*
    896 			 * since we're not the console we can postpone
    897 			 * the rest until someone actually allocates a
    898 			 * screen for us.  but we do clear the screen
    899 			 * at least.
    900 			 */
    901 			memset(ri->ri_bits, 0, 1024);
    902 
    903 			radeonfb_modeswitch(dp);
    904 #ifdef SPLASHSCREEN
    905 			splash_render(&dp->rd_splash,
    906 			    SPLASH_F_CENTER|SPLASH_F_FILL);
    907 			SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    908 #endif
    909 		}
    910 
    911 		aa.console = dp->rd_console;
    912 		aa.scrdata = &dp->rd_wsscreenlist;
    913 		aa.accessops = &radeonfb_accessops;
    914 		aa.accesscookie = &dp->rd_vd;
    915 
    916 		config_found(&sc->sc_dev, &aa, wsemuldisplaydevprint);
    917 
    918 		radeonfb_blank(dp, 0);
    919 
    920 		/* Initialise delayed lvds operations for backlight. */
    921 		callout_init(&dp->rd_bl_lvds_co, 0);
    922 		callout_setfunc(&dp->rd_bl_lvds_co,
    923 				radeonfb_lvds_callout, dp);
    924 	}
    925 
    926 	/*
    927 	 * if we have console output via firmware like on sparc64 it may
    928 	 * interfere with DAC programming so program the palette again
    929 	 * here after we took over
    930 	 */
    931 	radeonfb_init_palette(sc, 0);
    932 	if (HAS_CRTC2(sc))
    933 		radeonfb_init_palette(sc, 1);
    934 
    935 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_UP,
    936 	    radeonfb_brightness_up, TRUE);
    937 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_DOWN,
    938 	    radeonfb_brightness_down, TRUE);
    939 
    940 	config_found_ia(dev, "drm", aux, radeonfb_drm_print);
    941 
    942 	return;
    943 
    944 error:
    945 	if (sc->sc_biossz)
    946 		free(sc->sc_bios, M_DEVBUF);
    947 
    948 	if (sc->sc_regsz)
    949 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
    950 
    951 	if (sc->sc_memsz)
    952 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
    953 }
    954 
    955 static int
    956 radeonfb_drm_print(void *aux, const char *pnp)
    957 {
    958 	if (pnp)
    959 		aprint_normal("drm at %s", pnp);
    960 	return (UNCONF);
    961 }
    962 
    963 int
    964 radeonfb_ioctl(void *v, void *vs,
    965     unsigned long cmd, void *d, int flag, struct lwp *l)
    966 {
    967 	struct vcons_data	*vd;
    968 	struct radeonfb_display	*dp;
    969 	struct radeonfb_softc	*sc;
    970 	struct wsdisplay_param  *param;
    971 
    972 	vd = (struct vcons_data *)v;
    973 	dp = (struct radeonfb_display *)vd->cookie;
    974 	sc = dp->rd_softc;
    975 
    976 	switch (cmd) {
    977 	case WSDISPLAYIO_GTYPE:
    978 		*(unsigned *)d = WSDISPLAY_TYPE_PCIMISC;
    979 		return 0;
    980 
    981 	case WSDISPLAYIO_GINFO:
    982 		if (vd->active != NULL) {
    983 			struct wsdisplay_fbinfo *fb;
    984 			fb = (struct wsdisplay_fbinfo *)d;
    985 			fb->width = dp->rd_virtx;
    986 			fb->height = dp->rd_virty;
    987 			fb->depth = dp->rd_bpp;
    988 			fb->cmsize = 256;
    989 			return 0;
    990 		} else
    991 			return ENODEV;
    992 	case WSDISPLAYIO_GVIDEO:
    993 		if (radeonfb_isblank(dp))
    994 			*(unsigned *)d = WSDISPLAYIO_VIDEO_OFF;
    995 		else
    996 			*(unsigned *)d = WSDISPLAYIO_VIDEO_ON;
    997 		return 0;
    998 
    999 	case WSDISPLAYIO_SVIDEO:
   1000 		radeonfb_blank(dp,
   1001 		    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_OFF));
   1002 		return 0;
   1003 
   1004 	case WSDISPLAYIO_GETCMAP:
   1005 #if 0
   1006 		if (dp->rd_bpp == 8)
   1007 			return radeonfb_getcmap(sc,
   1008 			    (struct wsdisplay_cmap *)d);
   1009 #endif
   1010 		return EINVAL;
   1011 
   1012 	case WSDISPLAYIO_PUTCMAP:
   1013 #if 0
   1014 		if (dp->rd_bpp == 8)
   1015 			return radeonfb_putcmap(sc,
   1016 			    (struct wsdisplay_cmap *)d);
   1017 #endif
   1018 		return EINVAL;
   1019 
   1020 	case WSDISPLAYIO_LINEBYTES:
   1021 		*(unsigned *)d = dp->rd_stride;
   1022 		return 0;
   1023 
   1024 	case WSDISPLAYIO_SMODE:
   1025 		if (*(int *)d != dp->rd_wsmode) {
   1026 			dp->rd_wsmode = *(int *)d;
   1027 			if ((dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) &&
   1028 			    (dp->rd_vd.active)) {
   1029 				radeonfb_engine_init(dp);
   1030 				radeonfb_init_palette(sc, dp == &sc->sc_displays[0] ? 0 : 1);
   1031 				radeonfb_modeswitch(dp);
   1032 				vcons_redraw_screen(dp->rd_vd.active);
   1033 			}
   1034 		}
   1035 		return 0;
   1036 
   1037 	case WSDISPLAYIO_GCURMAX:
   1038 		((struct wsdisplay_curpos *)d)->x = RADEON_CURSORMAXX;
   1039 		((struct wsdisplay_curpos *)d)->y = RADEON_CURSORMAXY;
   1040 		return 0;
   1041 
   1042 	case WSDISPLAYIO_SCURSOR:
   1043 		return radeonfb_set_cursor(dp, (struct wsdisplay_cursor *)d);
   1044 
   1045 	case WSDISPLAYIO_GCURSOR:
   1046 		return EPASSTHROUGH;
   1047 
   1048 	case WSDISPLAYIO_GCURPOS:
   1049 		((struct wsdisplay_curpos *)d)->x = dp->rd_cursor.rc_pos.x;
   1050 		((struct wsdisplay_curpos *)d)->y = dp->rd_cursor.rc_pos.y;
   1051 		return 0;
   1052 
   1053 	case WSDISPLAYIO_SCURPOS:
   1054 		return radeonfb_set_curpos(dp, (struct wsdisplay_curpos *)d);
   1055 
   1056 	case WSDISPLAYIO_SSPLASH:
   1057 #if defined(SPLASHSCREEN)
   1058 		if (*(int *)d == 1) {
   1059 			SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
   1060 			splash_render(&dp->rd_splash,
   1061 			    SPLASH_F_CENTER|SPLASH_F_FILL);
   1062 		} else
   1063 			SCREEN_ENABLE_DRAWING(&dp->rd_vscreen);
   1064 		return 0;
   1065 #else
   1066 		return ENODEV;
   1067 #endif
   1068 	case WSDISPLAYIO_SPROGRESS:
   1069 #if defined(SPLASHSCREEN) && defined(SPLASHSCREEN_PROGRESS)
   1070 		dp->rd_progress.sp_force = 1;
   1071 		splash_progress_update(&dp->rd_progress);
   1072 		dp->rd_progress.sp_force = 0;
   1073 		return 0;
   1074 #else
   1075 		return ENODEV;
   1076 #endif
   1077 	case WSDISPLAYIO_GETPARAM:
   1078 		param = (struct wsdisplay_param *)d;
   1079 		if (param->param == WSDISPLAYIO_PARAM_BACKLIGHT) {
   1080 			param->min = 0;
   1081 			param->max = RADEONFB_BACKLIGHT_MAX;
   1082 			param->curval = radeonfb_get_backlight(dp);
   1083 			return 0;
   1084 		}
   1085 		return EPASSTHROUGH;
   1086 
   1087 	case WSDISPLAYIO_SETPARAM:
   1088 		param = (struct wsdisplay_param *)d;
   1089 		if (param->param == WSDISPLAYIO_PARAM_BACKLIGHT) {
   1090 			return radeonfb_set_backlight(dp, param->curval);
   1091 		}
   1092 		return EPASSTHROUGH;
   1093 
   1094 	/* PCI config read/write passthrough. */
   1095 	case PCI_IOC_CFGREAD:
   1096 	case PCI_IOC_CFGWRITE:
   1097 		return (pci_devioctl(sc->sc_pc, sc->sc_pt, cmd, d, flag, l));
   1098 
   1099 	default:
   1100 		return EPASSTHROUGH;
   1101 	}
   1102 }
   1103 
   1104 paddr_t
   1105 radeonfb_mmap(void *v, void *vs, off_t offset, int prot)
   1106 {
   1107 	struct vcons_data	*vd;
   1108 	struct radeonfb_display	*dp;
   1109 	struct radeonfb_softc	*sc;
   1110 	paddr_t			pa;
   1111 
   1112 	vd = (struct vcons_data *)v;
   1113 	dp = (struct radeonfb_display *)vd->cookie;
   1114 	sc = dp->rd_softc;
   1115 
   1116 	/* XXX: note that we don't allow mapping of registers right now */
   1117 	/* XXX: this means that the XFree86 radeon driver won't work */
   1118 	if ((offset >= 0) && (offset < (dp->rd_virty * dp->rd_stride))) {
   1119 		pa = bus_space_mmap(sc->sc_memt,
   1120 		    sc->sc_memaddr + dp->rd_offset + offset, 0,
   1121 		    prot, BUS_SPACE_MAP_LINEAR);
   1122 		return pa;
   1123 	}
   1124 
   1125 #ifdef RADEONFB_MMAP_BARS
   1126 	/*
   1127 	 * restrict all other mappings to processes with superuser privileges
   1128 	 * or the kernel itself
   1129 	 */
   1130 	if (kauth_authorize_generic(kauth_cred_get(), KAUTH_GENERIC_ISSUSER,
   1131 	    NULL) != 0) {
   1132 		aprint_error_dev(&sc->sc_dev, "mmap() rejected.\n");
   1133 		return -1;
   1134 	}
   1135 
   1136 	if ((offset >= sc->sc_regaddr) &&
   1137 	    (offset < sc->sc_regaddr + sc->sc_regsz)) {
   1138 		return bus_space_mmap(sc->sc_regt, offset, 0, prot,
   1139 		    BUS_SPACE_MAP_LINEAR);
   1140 	}
   1141 
   1142 	if ((offset >= sc->sc_memaddr) &&
   1143 	    (offset < sc->sc_memaddr + sc->sc_memsz)) {
   1144 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1145 		    BUS_SPACE_MAP_LINEAR);
   1146 	}
   1147 
   1148 	if ((offset >= sc->sc_romaddr) &&
   1149 	    (offset < sc->sc_romaddr + sc->sc_romsz)) {
   1150 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1151 		    BUS_SPACE_MAP_LINEAR);
   1152 	}
   1153 
   1154 #ifdef PCI_MAGIC_IO_RANGE
   1155 	/* allow mapping of IO space */
   1156 	if ((offset >= PCI_MAGIC_IO_RANGE) &&
   1157 	    (offset < PCI_MAGIC_IO_RANGE + 0x10000)) {
   1158 		pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE,
   1159 		    0, prot, 0);
   1160 		return pa;
   1161 	}
   1162 #endif /* macppc */
   1163 
   1164 #endif /* RADEONFB_MMAP_BARS */
   1165 
   1166 	return -1;
   1167 }
   1168 
   1169 static void
   1170 radeonfb_loadbios(struct radeonfb_softc *sc, struct pci_attach_args *pa)
   1171 {
   1172 	bus_space_tag_t		romt;
   1173 	bus_space_handle_t	romh, biosh;
   1174 	bus_size_t		romsz;
   1175 	bus_addr_t		ptr;
   1176 
   1177 	if (pci_mapreg_map(pa, PCI_MAPREG_ROM, PCI_MAPREG_TYPE_ROM,
   1178 		BUS_SPACE_MAP_PREFETCHABLE, &romt, &romh, NULL, &romsz) != 0) {
   1179 		aprint_verbose("%s: unable to map BIOS!\n", XNAME(sc));
   1180 		return;
   1181 	}
   1182 
   1183 	pci_find_rom(pa, romt, romh, PCI_ROM_CODE_TYPE_X86, &biosh,
   1184 	    &sc->sc_biossz);
   1185 	if (sc->sc_biossz == 0) {
   1186 		aprint_verbose("%s: Video BIOS not present\n", XNAME(sc));
   1187 		return;
   1188 	}
   1189 
   1190 	sc->sc_bios = malloc(sc->sc_biossz, M_DEVBUF, M_WAITOK);
   1191 	bus_space_read_region_1(romt, biosh, 0, sc->sc_bios, sc->sc_biossz);
   1192 
   1193 	/* unmap the PCI expansion rom */
   1194 	bus_space_unmap(romt, romh, romsz);
   1195 
   1196 	/* turn off rom decoder now */
   1197 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM,
   1198 	    pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM) &
   1199 	    ~PCI_MAPREG_ROM_ENABLE);
   1200 
   1201 	ptr = GETBIOS16(sc, 0x48);
   1202 	if ((GETBIOS32(sc, ptr + 4) == 0x41544f4d /* "ATOM" */) ||
   1203 	    (GETBIOS32(sc, ptr + 4) == 0x4d4f5441 /* "MOTA" */)) {
   1204 		sc->sc_flags |= RFB_ATOM;
   1205 	}
   1206 
   1207 	aprint_verbose("%s: Found %d KB %s BIOS\n", XNAME(sc),
   1208 	    (unsigned)sc->sc_biossz >> 10, IS_ATOM(sc) ? "ATOM" : "Legacy");
   1209 }
   1210 
   1211 
   1212 uint32_t
   1213 radeonfb_get32(struct radeonfb_softc *sc, uint32_t reg)
   1214 {
   1215 
   1216 	return bus_space_read_4(sc->sc_regt, sc->sc_regh, reg);
   1217 }
   1218 
   1219 void
   1220 radeonfb_put32(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1221 {
   1222 
   1223 	bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, val);
   1224 }
   1225 
   1226 void
   1227 radeonfb_mask32(struct radeonfb_softc *sc, uint32_t reg,
   1228     uint32_t andmask, uint32_t ormask)
   1229 {
   1230 	int		s;
   1231 	uint32_t	val;
   1232 
   1233 	s = splhigh();
   1234 	val = radeonfb_get32(sc, reg);
   1235 	val = (val & andmask) | ormask;
   1236 	radeonfb_put32(sc, reg, val);
   1237 	splx(s);
   1238 }
   1239 
   1240 uint32_t
   1241 radeonfb_getindex(struct radeonfb_softc *sc, uint32_t idx)
   1242 {
   1243 	int		s;
   1244 	uint32_t	val;
   1245 
   1246 	s = splhigh();
   1247 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1248 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1249 	splx(s);
   1250 
   1251 	return (val);
   1252 }
   1253 
   1254 void
   1255 radeonfb_putindex(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1256 {
   1257 	int	s;
   1258 
   1259 	s = splhigh();
   1260 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1261 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1262 	splx(s);
   1263 }
   1264 
   1265 void
   1266 radeonfb_maskindex(struct radeonfb_softc *sc, uint32_t idx,
   1267     uint32_t andmask, uint32_t ormask)
   1268 {
   1269 	int		s;
   1270 	uint32_t	val;
   1271 
   1272 	s = splhigh();
   1273 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1274 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1275 	val = (val & andmask) | ormask;
   1276 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1277 	splx(s);
   1278 }
   1279 
   1280 uint32_t
   1281 radeonfb_getpll(struct radeonfb_softc *sc, uint32_t idx)
   1282 {
   1283 	int		s;
   1284 	uint32_t	val;
   1285 
   1286 	s = splhigh();
   1287 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, idx & 0x3f);
   1288 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1289 	if (HAS_R300CG(sc))
   1290 		radeonfb_r300cg_workaround(sc);
   1291 	splx(s);
   1292 
   1293 	return (val);
   1294 }
   1295 
   1296 void
   1297 radeonfb_putpll(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1298 {
   1299 	int	s;
   1300 
   1301 	s = splhigh();
   1302 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1303 	    RADEON_PLL_WR_EN);
   1304 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1305 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1306 	splx(s);
   1307 }
   1308 
   1309 void
   1310 radeonfb_maskpll(struct radeonfb_softc *sc, uint32_t idx,
   1311     uint32_t andmask, uint32_t ormask)
   1312 {
   1313 	int		s;
   1314 	uint32_t	val;
   1315 
   1316 	s = splhigh();
   1317 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1318 		RADEON_PLL_WR_EN);
   1319 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1320 	val = (val & andmask) | ormask;
   1321 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1322 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1323 	splx(s);
   1324 }
   1325 
   1326 int
   1327 radeonfb_scratch_test(struct radeonfb_softc *sc, int reg, uint32_t v)
   1328 {
   1329 	uint32_t	saved;
   1330 
   1331 	saved = GET32(sc, reg);
   1332 	PUT32(sc, reg, v);
   1333 	if (GET32(sc, reg) != v) {
   1334 		return -1;
   1335 	}
   1336 	PUT32(sc, reg, saved);
   1337 	return 0;
   1338 }
   1339 
   1340 uintmax_t
   1341 radeonfb_getprop_num(struct radeonfb_softc *sc, const char *name,
   1342     uintmax_t defval)
   1343 {
   1344 	prop_number_t	pn;
   1345 	pn = prop_dictionary_get(device_properties(&sc->sc_dev), name);
   1346 	if (pn == NULL) {
   1347 		return defval;
   1348 	}
   1349 	KASSERT(prop_object_type(pn) == PROP_TYPE_NUMBER);
   1350 	return (prop_number_integer_value(pn));
   1351 }
   1352 
   1353 int
   1354 radeonfb_getclocks(struct radeonfb_softc *sc)
   1355 {
   1356 	bus_addr_t	ptr;
   1357 	int		refclk = 0;
   1358 	int		refdiv = 0;
   1359 	int		minpll = 0;
   1360 	int		maxpll = 0;
   1361 
   1362 	/* load initial property values if port/board provides them */
   1363 	refclk = radeonfb_getprop_num(sc, "refclk", 0) & 0xffff;
   1364 	refdiv = radeonfb_getprop_num(sc, "refdiv", 0) & 0xffff;
   1365 	minpll = radeonfb_getprop_num(sc, "minpll", 0) & 0xffffffffU;
   1366 	maxpll = radeonfb_getprop_num(sc, "maxpll", 0) & 0xffffffffU;
   1367 
   1368 	if (refclk && refdiv && minpll && maxpll)
   1369 		goto dontprobe;
   1370 
   1371 	if (!sc->sc_biossz) {
   1372 		/* no BIOS */
   1373 		aprint_verbose("%s: No video BIOS, using default clocks\n",
   1374 		    XNAME(sc));
   1375 		if (IS_IGP(sc))
   1376 			refclk = refclk ? refclk : 1432;
   1377 		else
   1378 			refclk = refclk ? refclk : 2700;
   1379 		refdiv = refdiv ? refdiv : 12;
   1380 		minpll = minpll ? minpll : 12500;
   1381 		maxpll = maxpll ? maxpll : 35000;
   1382 	} else if (IS_ATOM(sc)) {
   1383 		/* ATOM BIOS */
   1384 		ptr = GETBIOS16(sc, 0x48);
   1385 		ptr = GETBIOS16(sc, ptr + 32);	/* aka MasterDataStart */
   1386 		ptr = GETBIOS16(sc, ptr + 12);	/* pll info block */
   1387 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 82);
   1388 		minpll = minpll ? minpll : GETBIOS16(sc, ptr + 78);
   1389 		maxpll = maxpll ? maxpll : GETBIOS16(sc, ptr + 32);
   1390 		/*
   1391 		 * ATOM BIOS doesn't supply a reference divider, so we
   1392 		 * have to probe for it.
   1393 		 */
   1394 		if (refdiv < 2)
   1395 			refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1396 			    RADEON_PPLL_REF_DIV_MASK;
   1397 		/*
   1398 		 * if probe is zero, just assume one that should work
   1399 		 * for most parts
   1400 		 */
   1401 		if (refdiv < 2)
   1402 			refdiv = 12;
   1403 
   1404 	} else {
   1405 		/* Legacy BIOS */
   1406 		ptr = GETBIOS16(sc, 0x48);
   1407 		ptr = GETBIOS16(sc, ptr + 0x30);
   1408 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 0x0E);
   1409 		refdiv = refdiv ? refdiv : GETBIOS16(sc, ptr + 0x10);
   1410 		minpll = minpll ? minpll : GETBIOS32(sc, ptr + 0x12);
   1411 		maxpll = maxpll ? maxpll : GETBIOS32(sc, ptr + 0x16);
   1412 	}
   1413 
   1414 
   1415 dontprobe:
   1416 	sc->sc_refclk = refclk * 10;
   1417 	sc->sc_refdiv = refdiv;
   1418 	sc->sc_minpll = minpll * 10;
   1419 	sc->sc_maxpll = maxpll * 10;
   1420 	return 0;
   1421 }
   1422 
   1423 int
   1424 radeonfb_calc_dividers(struct radeonfb_softc *sc, uint32_t dotclock,
   1425     uint32_t *postdivbit, uint32_t *feedbackdiv)
   1426 {
   1427 	int		i;
   1428 	uint32_t	outfreq;
   1429 	int		div;
   1430 
   1431 	DPRINTF(("dot clock: %u\n", dotclock));
   1432 	for (i = 0; (div = radeonfb_dividers[i].divider) != 0; i++) {
   1433 		outfreq = div * dotclock;
   1434 		if ((outfreq >= sc->sc_minpll) &&
   1435 		    (outfreq <= sc->sc_maxpll)) {
   1436 			DPRINTF(("outfreq: %u\n", outfreq));
   1437 			*postdivbit =
   1438 			    ((uint32_t)radeonfb_dividers[i].mask << 16);
   1439 			DPRINTF(("post divider: %d (mask %x)\n", div,
   1440 				    *postdivbit));
   1441 			break;
   1442 		}
   1443 	}
   1444 
   1445 	if (div == 0)
   1446 		return 1;
   1447 
   1448 	*feedbackdiv = DIVIDE(sc->sc_refdiv * outfreq, sc->sc_refclk);
   1449 	DPRINTF(("feedback divider: %d\n", *feedbackdiv));
   1450 	return 0;
   1451 }
   1452 
   1453 #if 0
   1454 #ifdef RADEONFB_DEBUG
   1455 static void
   1456 dump_buffer(const char *pfx, void *buffer, unsigned int size)
   1457 {
   1458 	char		asc[17];
   1459 	unsigned	ptr = (unsigned)buffer;
   1460 	char		*start = (char *)(ptr & ~0xf);
   1461 	char		*end = (char *)(ptr + size);
   1462 
   1463 	end = (char *)(((unsigned)end + 0xf) & ~0xf);
   1464 
   1465 	if (pfx == NULL) {
   1466 		pfx = "";
   1467 	}
   1468 
   1469 	while (start < end) {
   1470 		unsigned offset = (unsigned)start & 0xf;
   1471 		if (offset == 0) {
   1472 			printf("%s%x: ", pfx, (unsigned)start);
   1473 		}
   1474 		if (((unsigned)start < ptr) ||
   1475 		    ((unsigned)start >= (ptr + size))) {
   1476 			printf("  ");
   1477 			asc[offset] = ' ';
   1478 		} else {
   1479 			printf("%02x", *(unsigned char *)start);
   1480 			if ((*start >= ' ') && (*start <= '~')) {
   1481 				asc[offset] = *start;
   1482 			} else {
   1483 				asc[offset] = '.';
   1484 			}
   1485 		}
   1486 		asc[offset + 1] = 0;
   1487 		if (offset % 2) {
   1488 			printf(" ");
   1489 		}
   1490 		if (offset == 15) {
   1491 			printf(" %s\n", asc);
   1492 		}
   1493 		start++;
   1494 	}
   1495 }
   1496 #endif
   1497 #endif
   1498 
   1499 int
   1500 radeonfb_getconnectors(struct radeonfb_softc *sc)
   1501 {
   1502 	int	i;
   1503 	int	found = 0;
   1504 
   1505 	for (i = 0; i < 2; i++) {
   1506 		sc->sc_ports[i].rp_mon_type = RADEON_MT_UNKNOWN;
   1507 		sc->sc_ports[i].rp_ddc_type = RADEON_DDC_NONE;
   1508 		sc->sc_ports[i].rp_dac_type = RADEON_DAC_UNKNOWN;
   1509 		sc->sc_ports[i].rp_conn_type = RADEON_CONN_NONE;
   1510 		sc->sc_ports[i].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1511 	}
   1512 
   1513 	/*
   1514 	 * This logic is borrowed from Xorg's radeon driver.
   1515 	 */
   1516 	if (!sc->sc_biossz)
   1517 		goto nobios;
   1518 
   1519 	if (IS_ATOM(sc)) {
   1520 		/* not done yet */
   1521 	} else {
   1522 		uint16_t	ptr;
   1523 		int		port = 0;
   1524 
   1525 		ptr = GETBIOS16(sc, 0x48);
   1526 		ptr = GETBIOS16(sc, ptr + 0x50);
   1527 		for (i = 1; i < 4; i++) {
   1528 			uint16_t	entry;
   1529 			uint8_t		conn, ddc, dac, tmds;
   1530 
   1531 			/*
   1532 			 * Parse the connector table.  From reading the code,
   1533 			 * it appears to made up of 16-bit entries for each
   1534 			 * connector.  The 16-bits are defined as:
   1535 			 *
   1536 			 * bits 12-15	- connector type (0 == end of table)
   1537 			 * bits 8-11	- DDC type
   1538 			 * bits 5-7	- ???
   1539 			 * bit 4	- TMDS type (1 = EXT, 0 = INT)
   1540 			 * bits 1-3	- ???
   1541 			 * bit 0	- DAC, 1 = TVDAC, 0 = primary
   1542 			 */
   1543 			if (!GETBIOS8(sc, ptr + i * 2) && i > 1)
   1544 				break;
   1545 			entry = GETBIOS16(sc, ptr + i * 2);
   1546 
   1547 			conn = (entry >> 12) & 0xf;
   1548 			ddc = (entry >> 8) & 0xf;
   1549 			dac = (entry & 0x1) ? RADEON_DAC_TVDAC :
   1550 			    RADEON_DAC_PRIMARY;
   1551 			tmds = ((entry >> 4) & 0x1) ? RADEON_TMDS_EXT :
   1552 			    RADEON_TMDS_INT;
   1553 
   1554 			if (conn == RADEON_CONN_NONE)
   1555 				continue;	/* no connector */
   1556 
   1557 			if ((found > 0) &&
   1558 			    (sc->sc_ports[port].rp_ddc_type == ddc)) {
   1559 				/* duplicate entry for same connector */
   1560 				continue;
   1561 			}
   1562 
   1563 			/* internal DDC_DVI port gets priority */
   1564 			if ((ddc == RADEON_DDC_DVI) || (port == 1))
   1565 				port = 0;
   1566 			else
   1567 				port = 1;
   1568 
   1569 			sc->sc_ports[port].rp_ddc_type =
   1570 			    ddc > RADEON_DDC_CRT2 ? RADEON_DDC_NONE : ddc;
   1571 			sc->sc_ports[port].rp_dac_type = dac;
   1572 			sc->sc_ports[port].rp_conn_type =
   1573 			    min(conn, RADEON_CONN_UNSUPPORTED) ;
   1574 
   1575 			sc->sc_ports[port].rp_tmds_type = tmds;
   1576 
   1577 			if ((conn != RADEON_CONN_DVI_I) &&
   1578 			    (conn != RADEON_CONN_DVI_D) &&
   1579 			    (tmds == RADEON_TMDS_INT))
   1580 				sc->sc_ports[port].rp_tmds_type =
   1581 				    RADEON_TMDS_UNKNOWN;
   1582 
   1583 			found += (port + 1);
   1584 		}
   1585 	}
   1586 
   1587 nobios:
   1588 	if (!found) {
   1589 		DPRINTF(("No connector info in BIOS!\n"));
   1590 		/* default, port 0 = internal TMDS, port 1 = CRT */
   1591 		sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1592 		sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1593 		sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1594 		sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1595 		sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1596 
   1597 		sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1598 		sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1599 		sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1600 		sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1601 		sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_EXT;
   1602 	}
   1603 
   1604 	/*
   1605 	 * Fixup for RS300/RS350/RS400 chips, that lack a primary DAC.
   1606 	 * these chips should use TVDAC for the VGA port.
   1607 	 */
   1608 	if (HAS_SDAC(sc)) {
   1609 		if (sc->sc_ports[0].rp_conn_type == RADEON_CONN_CRT) {
   1610 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1611 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1612 		} else {
   1613 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_TVDAC;
   1614 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1615 		}
   1616 	} else if (!HAS_CRTC2(sc)) {
   1617 		sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1618 	}
   1619 
   1620 	for (i = 0; i < 2; i++) {
   1621 		char	edid[128];
   1622 		uint8_t	ddc;
   1623 		struct edid_info *eip = &sc->sc_ports[i].rp_edid;
   1624 		prop_data_t edid_data;
   1625 
   1626 		DPRINTF(("Port #%d:\n", i));
   1627 		DPRINTF(("    conn = %d\n", sc->sc_ports[i].rp_conn_type));
   1628 		DPRINTF(("    ddc = %d\n", sc->sc_ports[i].rp_ddc_type));
   1629 		DPRINTF(("    dac = %d\n", sc->sc_ports[i].rp_dac_type));
   1630 		DPRINTF(("    tmds = %d\n", sc->sc_ports[i].rp_tmds_type));
   1631 
   1632 		sc->sc_ports[i].rp_edid_valid = 0;
   1633 		/* first look for static EDID data */
   1634 		if ((edid_data = prop_dictionary_get(device_properties(
   1635 		    &sc->sc_dev), "EDID")) != NULL) {
   1636 
   1637 			aprint_normal_dev(&sc->sc_dev, "using static EDID\n");
   1638 			memcpy(edid, prop_data_data_nocopy(edid_data), 128);
   1639 			if (edid_parse(edid, eip) == 0) {
   1640 
   1641 				sc->sc_ports[i].rp_edid_valid = 1;
   1642 			}
   1643 		}
   1644 		/* if we didn't find any we'll try to talk to the monitor */
   1645 		if (sc->sc_ports[i].rp_edid_valid != 1) {
   1646 
   1647 			ddc = sc->sc_ports[i].rp_ddc_type;
   1648 			if (ddc != RADEON_DDC_NONE) {
   1649 				if ((radeonfb_i2c_read_edid(sc, ddc, edid)
   1650 				    == 0) && (edid_parse(edid, eip) == 0)) {
   1651 
   1652 					sc->sc_ports[i].rp_edid_valid = 1;
   1653 					edid_print(eip);
   1654 				}
   1655 			}
   1656 		}
   1657 	}
   1658 
   1659 	return found;
   1660 }
   1661 
   1662 int
   1663 radeonfb_gettmds(struct radeonfb_softc *sc)
   1664 {
   1665 	int	i;
   1666 
   1667 	if (!sc->sc_biossz) {
   1668 		goto nobios;
   1669 	}
   1670 
   1671 	if (IS_ATOM(sc)) {
   1672 		/* XXX: not done yet */
   1673 	} else {
   1674 		uint16_t	ptr;
   1675 		int		n;
   1676 
   1677 		ptr = GETBIOS16(sc, 0x48);
   1678 		ptr = GETBIOS16(sc, ptr + 0x34);
   1679 		DPRINTF(("DFP table revision %d\n", GETBIOS8(sc, ptr)));
   1680 		if (GETBIOS8(sc, ptr) == 3) {
   1681 			/* revision three table */
   1682 			n = GETBIOS8(sc, ptr + 5) + 1;
   1683 			n = min(n, 4);
   1684 
   1685 			memset(sc->sc_tmds_pll, 0, sizeof (sc->sc_tmds_pll));
   1686 			for (i = 0; i < n; i++) {
   1687 				sc->sc_tmds_pll[i].rtp_pll = GETBIOS32(sc,
   1688 				    ptr + i * 10 + 8);
   1689 				sc->sc_tmds_pll[i].rtp_freq = GETBIOS16(sc,
   1690 				    ptr + i * 10 + 0x10);
   1691 				DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1692 					    sc->sc_tmds_pll[i].rtp_freq,
   1693 					    sc->sc_tmds_pll[i].rtp_pll));
   1694 			}
   1695 			return 0;
   1696 		}
   1697 	}
   1698 
   1699 nobios:
   1700 	DPRINTF(("no suitable DFP table present\n"));
   1701 	for (i = 0;
   1702 	     i < sizeof (radeonfb_tmds_pll) / sizeof (radeonfb_tmds_pll[0]);
   1703 	     i++) {
   1704 		int	j;
   1705 
   1706 		if (radeonfb_tmds_pll[i].family != sc->sc_family)
   1707 			continue;
   1708 
   1709 		for (j = 0; j < 4; j++) {
   1710 			sc->sc_tmds_pll[j] = radeonfb_tmds_pll[i].plls[j];
   1711 			DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1712 				    sc->sc_tmds_pll[j].rtp_freq,
   1713 				    sc->sc_tmds_pll[j].rtp_pll));
   1714 		}
   1715 		return 0;
   1716 	}
   1717 
   1718 	return -1;
   1719 }
   1720 
   1721 const struct videomode *
   1722 radeonfb_modelookup(const char *name)
   1723 {
   1724 	int	i;
   1725 
   1726 	for (i = 0; i < videomode_count; i++)
   1727 		if (!strcmp(name, videomode_list[i].name))
   1728 			return &videomode_list[i];
   1729 
   1730 	return NULL;
   1731 }
   1732 
   1733 void
   1734 radeonfb_pllwriteupdate(struct radeonfb_softc *sc, int crtc)
   1735 {
   1736 	if (crtc) {
   1737 		while (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   1738 		    RADEON_P2PLL_ATOMIC_UPDATE_R);
   1739 		SETPLL(sc, RADEON_P2PLL_REF_DIV, RADEON_P2PLL_ATOMIC_UPDATE_W);
   1740 	} else {
   1741 		while (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1742 		    RADEON_PPLL_ATOMIC_UPDATE_R);
   1743 		SETPLL(sc, RADEON_PPLL_REF_DIV, RADEON_PPLL_ATOMIC_UPDATE_W);
   1744 	}
   1745 }
   1746 
   1747 void
   1748 radeonfb_pllwaitatomicread(struct radeonfb_softc *sc, int crtc)
   1749 {
   1750 	int	i;
   1751 
   1752 	for (i = 10000; i; i--) {
   1753 		if (crtc) {
   1754 			if (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   1755 			    RADEON_P2PLL_ATOMIC_UPDATE_R)
   1756 				break;
   1757 		} else {
   1758 			if (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1759 			    RADEON_PPLL_ATOMIC_UPDATE_R)
   1760 				break;
   1761 		}
   1762 	}
   1763 }
   1764 
   1765 void
   1766 radeonfb_program_vclk(struct radeonfb_softc *sc, int dotclock, int crtc)
   1767 {
   1768 	uint32_t	pbit = 0;
   1769 	uint32_t	feed = 0;
   1770 	uint32_t	data;
   1771 #if 1
   1772 	int		i;
   1773 #endif
   1774 
   1775 	radeonfb_calc_dividers(sc, dotclock, &pbit, &feed);
   1776 
   1777 	if (crtc == 0) {
   1778 
   1779 		/* XXXX: mobility workaround missing */
   1780 		/* XXXX: R300 stuff missing */
   1781 
   1782 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   1783 		    RADEON_VCLK_SRC_SEL_CPUCLK,
   1784 		    ~RADEON_VCLK_SRC_SEL_MASK);
   1785 
   1786 		/* put vclk into reset, use atomic updates */
   1787 		SETPLL(sc, RADEON_PPLL_CNTL,
   1788 		    RADEON_PPLL_REFCLK_SEL |
   1789 		    RADEON_PPLL_FBCLK_SEL |
   1790 		    RADEON_PPLL_RESET |
   1791 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   1792 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   1793 
   1794 		/* select clock 3 */
   1795 #if 0
   1796 		PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, RADEON_PLL_DIV_SEL,
   1797 		    ~RADEON_PLL_DIV_SEL);
   1798 #else
   1799 		PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   1800 		    ~RADEON_PLL_DIV_SEL);
   1801 #endif
   1802 
   1803 		/* XXX: R300 family -- program divider differently? */
   1804 
   1805 		/* program reference divider */
   1806 		PATCHPLL(sc, RADEON_PPLL_REF_DIV, sc->sc_refdiv,
   1807 		    ~RADEON_PPLL_REF_DIV_MASK);
   1808 		PRINTPLL(RADEON_PPLL_REF_DIV);
   1809 
   1810 #if 0
   1811 		data = GETPLL(sc, RADEON_PPLL_DIV_3);
   1812 		data &= ~(RADEON_PPLL_FB3_DIV_MASK |
   1813 		    RADEON_PPLL_POST3_DIV_MASK);
   1814 		data |= pbit;
   1815 		data |= (feed & RADEON_PPLL_FB3_DIV_MASK);
   1816 		PUTPLL(sc, RADEON_PPLL_DIV_3, data);
   1817 #else
   1818 		for (i = 0; i < 4; i++) {
   1819 		}
   1820 #endif
   1821 
   1822 		/* use the atomic update */
   1823 		radeonfb_pllwriteupdate(sc, crtc);
   1824 
   1825 		/* and wait for it to complete */
   1826 		radeonfb_pllwaitatomicread(sc, crtc);
   1827 
   1828 		/* program HTOTAL (why?) */
   1829 		PUTPLL(sc, RADEON_HTOTAL_CNTL, 0);
   1830 
   1831 		/* drop reset */
   1832 		CLRPLL(sc, RADEON_PPLL_CNTL,
   1833 		    RADEON_PPLL_RESET | RADEON_PPLL_SLEEP |
   1834 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   1835 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   1836 
   1837 		PRINTPLL(RADEON_PPLL_CNTL);
   1838 
   1839 		/* give clock time to lock */
   1840 		delay(50000);
   1841 
   1842 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   1843 		    RADEON_VCLK_SRC_SEL_PPLLCLK,
   1844 		    ~RADEON_VCLK_SRC_SEL_MASK);
   1845 
   1846 	} else {
   1847 
   1848 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   1849 		    RADEON_PIX2CLK_SRC_SEL_CPUCLK,
   1850 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   1851 
   1852 		/* put vclk into reset, use atomic updates */
   1853 		SETPLL(sc, RADEON_P2PLL_CNTL,
   1854 		    RADEON_P2PLL_RESET |
   1855 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   1856 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   1857 
   1858 		/* XXX: R300 family -- program divider differently? */
   1859 
   1860 		/* program reference divider */
   1861 		PATCHPLL(sc, RADEON_P2PLL_REF_DIV, sc->sc_refdiv,
   1862 		    ~RADEON_P2PLL_REF_DIV_MASK);
   1863 
   1864 		/* program feedback and post dividers */
   1865 		data = GETPLL(sc, RADEON_P2PLL_DIV_0);
   1866 		data &= ~(RADEON_P2PLL_FB0_DIV_MASK |
   1867 		    RADEON_P2PLL_POST0_DIV_MASK);
   1868 		data |= pbit;
   1869 		data |= (feed & RADEON_P2PLL_FB0_DIV_MASK);
   1870 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   1871 
   1872 		/* use the atomic update */
   1873 		radeonfb_pllwriteupdate(sc, crtc);
   1874 
   1875 		/* and wait for it to complete */
   1876 		radeonfb_pllwaitatomicread(sc, crtc);
   1877 
   1878 		/* program HTOTAL (why?) */
   1879 		PUTPLL(sc, RADEON_HTOTAL2_CNTL, 0);
   1880 
   1881 		/* drop reset */
   1882 		CLRPLL(sc, RADEON_P2PLL_CNTL,
   1883 		    RADEON_P2PLL_RESET | RADEON_P2PLL_SLEEP |
   1884 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   1885 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   1886 
   1887 		/* allow time for clock to lock */
   1888 		delay(50000);
   1889 
   1890 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   1891 		    RADEON_PIX2CLK_SRC_SEL_P2PLLCLK,
   1892 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   1893 	}
   1894 	PRINTREG(RADEON_CRTC_MORE_CNTL);
   1895 }
   1896 
   1897 void
   1898 radeonfb_modeswitch(struct radeonfb_display *dp)
   1899 {
   1900 	struct radeonfb_softc	*sc = dp->rd_softc;
   1901 	int			i;
   1902 
   1903 	/* blank the display while we switch modes */
   1904 	radeonfb_blank(dp, 1);
   1905 
   1906 #if 0
   1907 	SET32(sc, RADEON_CRTC_EXT_CNTL,
   1908 	    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   1909 	    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   1910 #endif
   1911 
   1912 	/* these registers might get in the way... */
   1913 	PUT32(sc, RADEON_OVR_CLR, 0);
   1914 	PUT32(sc, RADEON_OVR_WID_LEFT_RIGHT, 0);
   1915 	PUT32(sc, RADEON_OVR_WID_TOP_BOTTOM, 0);
   1916 	PUT32(sc, RADEON_OV0_SCALE_CNTL, 0);
   1917 	PUT32(sc, RADEON_SUBPIC_CNTL, 0);
   1918 	PUT32(sc, RADEON_VIPH_CONTROL, 0);
   1919 	PUT32(sc, RADEON_I2C_CNTL_1, 0);
   1920 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   1921 	PUT32(sc, RADEON_CAP0_TRIG_CNTL, 0);
   1922 	PUT32(sc, RADEON_CAP1_TRIG_CNTL, 0);
   1923 	PUT32(sc, RADEON_SURFACE_CNTL, 0);
   1924 
   1925 	for (i = 0; i < dp->rd_ncrtcs; i++)
   1926 		radeonfb_setcrtc(dp, i);
   1927 
   1928 	/* activate the display */
   1929 	radeonfb_blank(dp, 0);
   1930 }
   1931 
   1932 void
   1933 radeonfb_setcrtc(struct radeonfb_display *dp, int index)
   1934 {
   1935 	int			crtc;
   1936 	struct videomode	*mode;
   1937 	struct radeonfb_softc	*sc;
   1938 	struct radeonfb_crtc	*cp;
   1939 	uint32_t		v;
   1940 	uint32_t		gencntl;
   1941 	uint32_t		htotaldisp;
   1942 	uint32_t		hsyncstrt;
   1943 	uint32_t		vtotaldisp;
   1944 	uint32_t		vsyncstrt;
   1945 	uint32_t		fphsyncstrt;
   1946 	uint32_t		fpvsyncstrt;
   1947 	uint32_t		fphtotaldisp;
   1948 	uint32_t		fpvtotaldisp;
   1949 	uint32_t		pitch;
   1950 
   1951 	sc = dp->rd_softc;
   1952 	cp = &dp->rd_crtcs[index];
   1953 	crtc = cp->rc_number;
   1954 	mode = &cp->rc_videomode;
   1955 
   1956 #if 1
   1957 	pitch = (((dp->rd_virtx * dp->rd_bpp) + ((dp->rd_bpp * 8) - 1)) /
   1958 	    (dp->rd_bpp * 8));
   1959 #else
   1960 	pitch = (((sc->sc_maxx * sc->sc_maxbpp) + ((sc->sc_maxbpp * 8) - 1)) /
   1961 	    (sc->sc_maxbpp * 8));
   1962 #endif
   1963 	//pitch = pitch | (pitch << 16);
   1964 
   1965 	switch (crtc) {
   1966 	case 0:
   1967 		gencntl = RADEON_CRTC_GEN_CNTL;
   1968 		htotaldisp = RADEON_CRTC_H_TOTAL_DISP;
   1969 		hsyncstrt = RADEON_CRTC_H_SYNC_STRT_WID;
   1970 		vtotaldisp = RADEON_CRTC_V_TOTAL_DISP;
   1971 		vsyncstrt = RADEON_CRTC_V_SYNC_STRT_WID;
   1972 		fpvsyncstrt = RADEON_FP_V_SYNC_STRT_WID;
   1973 		fphsyncstrt = RADEON_FP_H_SYNC_STRT_WID;
   1974 		fpvtotaldisp = RADEON_FP_CRTC_V_TOTAL_DISP;
   1975 		fphtotaldisp = RADEON_FP_CRTC_H_TOTAL_DISP;
   1976 		break;
   1977 	case 1:
   1978 		gencntl = RADEON_CRTC2_GEN_CNTL;
   1979 		htotaldisp = RADEON_CRTC2_H_TOTAL_DISP;
   1980 		hsyncstrt = RADEON_CRTC2_H_SYNC_STRT_WID;
   1981 		vtotaldisp = RADEON_CRTC2_V_TOTAL_DISP;
   1982 		vsyncstrt = RADEON_CRTC2_V_SYNC_STRT_WID;
   1983 		fpvsyncstrt = RADEON_FP_V2_SYNC_STRT_WID;
   1984 		fphsyncstrt = RADEON_FP_H2_SYNC_STRT_WID;
   1985 		fpvtotaldisp = RADEON_FP_CRTC2_V_TOTAL_DISP;
   1986 		fphtotaldisp = RADEON_FP_CRTC2_H_TOTAL_DISP;
   1987 		break;
   1988 	default:
   1989 		panic("Bad CRTC!");
   1990 		break;
   1991 	}
   1992 
   1993 	/*
   1994 	 * CRTC_GEN_CNTL - depth, accelerator mode, etc.
   1995 	 */
   1996 	/* only bother with 32bpp and 8bpp */
   1997 	v = dp->rd_format << RADEON_CRTC_PIX_WIDTH_SHIFT;
   1998 
   1999 	if (crtc == 1) {
   2000 		v |= RADEON_CRTC2_CRT2_ON | RADEON_CRTC2_EN;
   2001 	} else {
   2002 		v |= RADEON_CRTC_EXT_DISP_EN | RADEON_CRTC_EN;
   2003 	}
   2004 
   2005 	if (mode->flags & VID_DBLSCAN)
   2006 		v |= RADEON_CRTC2_DBL_SCAN_EN;
   2007 
   2008 	if (mode->flags & VID_INTERLACE)
   2009 		v |= RADEON_CRTC2_INTERLACE_EN;
   2010 
   2011 	if (mode->flags & VID_CSYNC) {
   2012 		v |= RADEON_CRTC2_CSYNC_EN;
   2013 		if (crtc == 1)
   2014 			v |= RADEON_CRTC2_VSYNC_TRISTAT;
   2015 	}
   2016 
   2017 	PUT32(sc, gencntl, v);
   2018 	DPRINTF(("CRTC%s_GEN_CNTL = %08x\n", crtc ? "2" : "", v));
   2019 
   2020 	/*
   2021 	 * CRTC_EXT_CNTL - preserve disable flags, set ATI linear and EXT_CNT
   2022 	 */
   2023 	v = GET32(sc, RADEON_CRTC_EXT_CNTL);
   2024 	if (crtc == 0) {
   2025 		v &= (RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2026 		    RADEON_CRTC_DISPLAY_DIS);
   2027 		v |= RADEON_XCRT_CNT_EN | RADEON_VGA_ATI_LINEAR;
   2028 		if (mode->flags & VID_CSYNC)
   2029 			v |= RADEON_CRTC_VSYNC_TRISTAT;
   2030 	}
   2031 	/* unconditional turn on CRT, in case first CRTC is DFP */
   2032 	v |= RADEON_CRTC_CRT_ON;
   2033 	PUT32(sc, RADEON_CRTC_EXT_CNTL, v);
   2034 	PRINTREG(RADEON_CRTC_EXT_CNTL);
   2035 
   2036 	/*
   2037 	 * H_TOTAL_DISP
   2038 	 */
   2039 	v = ((mode->hdisplay / 8) - 1) << 16;
   2040 	v |= (mode->htotal / 8) - 1;
   2041 	PUT32(sc, htotaldisp, v);
   2042 	DPRINTF(("CRTC%s_H_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2043 	PUT32(sc, fphtotaldisp, v);
   2044 	DPRINTF(("FP_H%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2045 
   2046 	/*
   2047 	 * H_SYNC_STRT_WID
   2048 	 */
   2049 	v = (((mode->hsync_end - mode->hsync_start) / 8) << 16);
   2050 	v |= mode->hsync_start;
   2051 	if (mode->flags & VID_NHSYNC)
   2052 		v |= RADEON_CRTC_H_SYNC_POL;
   2053 	PUT32(sc, hsyncstrt, v);
   2054 	DPRINTF(("CRTC%s_H_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2055 	PUT32(sc, fphsyncstrt, v);
   2056 	DPRINTF(("FP_H%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2057 
   2058 	/*
   2059 	 * V_TOTAL_DISP
   2060 	 */
   2061 	v = ((mode->vdisplay - 1) << 16);
   2062 	v |= (mode->vtotal - 1);
   2063 	PUT32(sc, vtotaldisp, v);
   2064 	DPRINTF(("CRTC%s_V_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2065 	PUT32(sc, fpvtotaldisp, v);
   2066 	DPRINTF(("FP_V%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2067 
   2068 	/*
   2069 	 * V_SYNC_STRT_WID
   2070 	 */
   2071 	v = ((mode->vsync_end - mode->vsync_start) << 16);
   2072 	v |= (mode->vsync_start - 1);
   2073 	if (mode->flags & VID_NVSYNC)
   2074 		v |= RADEON_CRTC_V_SYNC_POL;
   2075 	PUT32(sc, vsyncstrt, v);
   2076 	DPRINTF(("CRTC%s_V_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2077 	PUT32(sc, fpvsyncstrt, v);
   2078 	DPRINTF(("FP_V%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2079 
   2080 	radeonfb_program_vclk(sc, mode->dot_clock, crtc);
   2081 
   2082 	switch (crtc) {
   2083 	case 0:
   2084 		PUT32(sc, RADEON_CRTC_OFFSET, 0);
   2085 		PUT32(sc, RADEON_CRTC_OFFSET_CNTL, 0);
   2086 		PUT32(sc, RADEON_CRTC_PITCH, pitch);
   2087 		CLR32(sc, RADEON_DISP_MERGE_CNTL, RADEON_DISP_RGB_OFFSET_EN);
   2088 
   2089 		CLR32(sc, RADEON_CRTC_EXT_CNTL,
   2090 		    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2091 		    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2092 		CLR32(sc, RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B);
   2093 		PRINTREG(RADEON_CRTC_EXT_CNTL);
   2094 		PRINTREG(RADEON_CRTC_GEN_CNTL);
   2095 		PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   2096 		break;
   2097 
   2098 	case 1:
   2099 		PUT32(sc, RADEON_CRTC2_OFFSET, 0);
   2100 		PUT32(sc, RADEON_CRTC2_OFFSET_CNTL, 0);
   2101 		PUT32(sc, RADEON_CRTC2_PITCH, pitch);
   2102 		CLR32(sc, RADEON_DISP2_MERGE_CNTL, RADEON_DISP2_RGB_OFFSET_EN);
   2103 		CLR32(sc, RADEON_CRTC2_GEN_CNTL,
   2104 		    RADEON_CRTC2_VSYNC_DIS |
   2105 		    RADEON_CRTC2_HSYNC_DIS |
   2106 		    RADEON_CRTC2_DISP_DIS | RADEON_CRTC2_DISP_REQ_EN_B);
   2107 		PRINTREG(RADEON_CRTC2_GEN_CNTL);
   2108 		break;
   2109 	}
   2110 }
   2111 
   2112 int
   2113 radeonfb_isblank(struct radeonfb_display *dp)
   2114 {
   2115 	uint32_t	reg, mask;
   2116 
   2117 	if (dp->rd_crtcs[0].rc_number) {
   2118 		reg = RADEON_CRTC2_GEN_CNTL;
   2119 		mask = RADEON_CRTC2_DISP_DIS;
   2120 	} else {
   2121 		reg = RADEON_CRTC_EXT_CNTL;
   2122 		mask = RADEON_CRTC_DISPLAY_DIS;
   2123 	}
   2124 	return ((GET32(dp->rd_softc, reg) & mask) ? 1 : 0);
   2125 }
   2126 
   2127 void
   2128 radeonfb_blank(struct radeonfb_display *dp, int blank)
   2129 {
   2130 	struct radeonfb_softc	*sc = dp->rd_softc;
   2131 	uint32_t		reg, mask;
   2132 	uint32_t		fpreg, fpval;
   2133 	int			i;
   2134 
   2135 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   2136 
   2137 		if (dp->rd_crtcs[i].rc_number) {
   2138 			reg = RADEON_CRTC2_GEN_CNTL;
   2139 			mask = RADEON_CRTC2_DISP_DIS;
   2140 			fpreg = RADEON_FP2_GEN_CNTL;
   2141 			fpval = RADEON_FP2_ON;
   2142 		} else {
   2143 			reg = RADEON_CRTC_EXT_CNTL;
   2144 			mask = RADEON_CRTC_DISPLAY_DIS;
   2145 			fpreg = RADEON_FP_GEN_CNTL;
   2146 			fpval = RADEON_FP_FPON;
   2147 		}
   2148 
   2149 		if (blank) {
   2150 			SET32(sc, reg, mask);
   2151 			CLR32(sc, fpreg, fpval);
   2152 		} else {
   2153 			CLR32(sc, reg, mask);
   2154 			SET32(sc, fpreg, fpval);
   2155 		}
   2156 	}
   2157 	PRINTREG(RADEON_FP_GEN_CNTL);
   2158 	PRINTREG(RADEON_FP2_GEN_CNTL);
   2159 }
   2160 
   2161 void
   2162 radeonfb_init_screen(void *cookie, struct vcons_screen *scr, int existing,
   2163     long *defattr)
   2164 {
   2165 	struct radeonfb_display *dp = cookie;
   2166 	struct rasops_info *ri = &scr->scr_ri;
   2167 
   2168 	/* initialize font subsystem */
   2169 	wsfont_init();
   2170 
   2171 	DPRINTF(("init screen called, existing %d\n", existing));
   2172 
   2173 	ri->ri_depth = dp->rd_bpp;
   2174 	ri->ri_width = dp->rd_virtx;
   2175 	ri->ri_height = dp->rd_virty;
   2176 	ri->ri_stride = dp->rd_stride;
   2177 	ri->ri_flg = RI_CENTER;
   2178 	ri->ri_bits = (void *)dp->rd_fbptr;
   2179 
   2180 	/* XXX: 32 bpp only */
   2181 	/* this is rgb in "big-endian order..." */
   2182 	ri->ri_rnum = 8;
   2183 	ri->ri_gnum = 8;
   2184 	ri->ri_bnum = 8;
   2185 	ri->ri_rpos = 16;
   2186 	ri->ri_gpos = 8;
   2187 	ri->ri_bpos = 0;
   2188 
   2189 	if (existing) {
   2190 		ri->ri_flg |= RI_CLEAR;
   2191 
   2192 		/* start a modeswitch now */
   2193 		radeonfb_modeswitch(dp);
   2194 	}
   2195 
   2196 	/*
   2197 	 * XXX: font selection should be based on properties, with some
   2198 	 * normal/reasonable default.
   2199 	 */
   2200 	ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_REVERSE;
   2201 
   2202 	/* initialize and look for an initial font */
   2203 	rasops_init(ri, dp->rd_virty/8, dp->rd_virtx/8);
   2204 
   2205 	rasops_reconfig(ri, dp->rd_virty / ri->ri_font->fontheight,
   2206 		    dp->rd_virtx / ri->ri_font->fontwidth);
   2207 
   2208 	/* enable acceleration */
   2209 	ri->ri_ops.copyrows = radeonfb_copyrows;
   2210 	ri->ri_ops.copycols = radeonfb_copycols;
   2211 	ri->ri_ops.eraserows = radeonfb_eraserows;
   2212 	ri->ri_ops.erasecols = radeonfb_erasecols;
   2213 	ri->ri_ops.allocattr = radeonfb_allocattr;
   2214 	if (!IS_R300(dp->rd_softc)) {
   2215 		ri->ri_ops.putchar = radeonfb_putchar;
   2216 	}
   2217 	ri->ri_ops.cursor = radeonfb_cursor;
   2218 }
   2219 
   2220 void
   2221 radeonfb_set_fbloc(struct radeonfb_softc *sc)
   2222 {
   2223 	uint32_t	gen, ext, gen2 = 0;
   2224 	uint32_t	agploc, aperbase, apersize, mcfbloc;
   2225 
   2226 	gen = GET32(sc, RADEON_CRTC_GEN_CNTL);
   2227 	ext = GET32(sc, RADEON_CRTC_EXT_CNTL);
   2228 	agploc = GET32(sc, RADEON_MC_AGP_LOCATION);
   2229 	aperbase = GET32(sc, RADEON_CONFIG_APER_0_BASE);
   2230 	apersize = GET32(sc, RADEON_CONFIG_APER_SIZE);
   2231 
   2232 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISP_REQ_EN_B);
   2233 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISPLAY_DIS);
   2234 	//PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISPLAY_DIS);
   2235 	//PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISP_REQ_EN_B);
   2236 
   2237 	if (HAS_CRTC2(sc)) {
   2238 		gen2 = GET32(sc, RADEON_CRTC2_GEN_CNTL);
   2239 		PUT32(sc, RADEON_CRTC2_GEN_CNTL,
   2240 		    gen2 | RADEON_CRTC2_DISP_REQ_EN_B);
   2241 	}
   2242 
   2243 	delay(100000);
   2244 
   2245 	mcfbloc = (aperbase >> 16) |
   2246 	    ((aperbase + (apersize - 1)) & 0xffff0000);
   2247 
   2248 	sc->sc_aperbase = (mcfbloc & 0xffff) << 16;
   2249 	sc->sc_memsz = apersize;
   2250 
   2251 	if (((agploc & 0xffff) << 16) !=
   2252 	    ((mcfbloc & 0xffff0000U) + 0x10000)) {
   2253 		agploc = mcfbloc & 0xffff0000U;
   2254 		agploc |= ((agploc + 0x10000) >> 16);
   2255 	}
   2256 
   2257 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2258 
   2259 	PUT32(sc, RADEON_MC_FB_LOCATION, mcfbloc);
   2260 	PUT32(sc, RADEON_MC_AGP_LOCATION, agploc);
   2261 
   2262 	DPRINTF(("aperbase = %u\n", aperbase));
   2263 	PRINTREG(RADEON_MC_FB_LOCATION);
   2264 	PRINTREG(RADEON_MC_AGP_LOCATION);
   2265 
   2266 	PUT32(sc, RADEON_DISPLAY_BASE_ADDR, sc->sc_aperbase);
   2267 
   2268 	if (HAS_CRTC2(sc))
   2269 		PUT32(sc, RADEON_DISPLAY2_BASE_ADDR, sc->sc_aperbase);
   2270 
   2271 	PUT32(sc, RADEON_OV0_BASE_ADDR, sc->sc_aperbase);
   2272 
   2273 #if 0
   2274 	/* XXX: what is this AGP garbage? :-) */
   2275 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2276 #endif
   2277 
   2278 	delay(100000);
   2279 
   2280 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen);
   2281 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext);
   2282 
   2283 	if (HAS_CRTC2(sc))
   2284 		PUT32(sc, RADEON_CRTC2_GEN_CNTL, gen2);
   2285 }
   2286 
   2287 void
   2288 radeonfb_init_misc(struct radeonfb_softc *sc)
   2289 {
   2290 	PUT32(sc, RADEON_BUS_CNTL,
   2291 	    RADEON_BUS_MASTER_DIS |
   2292 	    RADEON_BUS_PREFETCH_MODE_ACT |
   2293 	    RADEON_BUS_PCI_READ_RETRY_EN |
   2294 	    RADEON_BUS_PCI_WRT_RETRY_EN |
   2295 	    (3 << RADEON_BUS_RETRY_WS_SHIFT) |
   2296 	    RADEON_BUS_MSTR_RD_MULT |
   2297 	    RADEON_BUS_MSTR_RD_LINE |
   2298 	    RADEON_BUS_RD_DISCARD_EN |
   2299 	    RADEON_BUS_MSTR_DISCONNECT_EN |
   2300 	    RADEON_BUS_READ_BURST);
   2301 
   2302 	PUT32(sc, RADEON_BUS_CNTL1, 0xf0);
   2303 	/* PUT32(sc, RADEON_SEPROM_CNTL1, 0x09ff0000); */
   2304 	PUT32(sc, RADEON_FCP_CNTL, RADEON_FCP0_SRC_GND);
   2305 	PUT32(sc, RADEON_RBBM_CNTL,
   2306 	    (3 << RADEON_RB_SETTLE_SHIFT) |
   2307 	    (4 << RADEON_ABORTCLKS_HI_SHIFT) |
   2308 	    (4 << RADEON_ABORTCLKS_CP_SHIFT) |
   2309 	    (4 << RADEON_ABORTCLKS_CFIFO_SHIFT));
   2310 
   2311 	/* XXX: figure out what these mean! */
   2312 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2313 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2314 	//PUT32(sc, RADEON_DISP_MISC_CNTL, 0x5bb00400);
   2315 
   2316 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2317 	PUT32(sc, RADEON_GEN_INT_STATUS, GET32(sc, RADEON_GEN_INT_STATUS));
   2318 }
   2319 
   2320 /*
   2321  * This loads a linear color map for true color.
   2322  */
   2323 void
   2324 radeonfb_init_palette(struct radeonfb_softc *sc, int crtc)
   2325 {
   2326 	int		i;
   2327 	uint32_t	vclk;
   2328 
   2329 #define	DAC_WIDTH ((1 << 10) - 1)
   2330 #define	CLUT_WIDTH ((1 << 8) - 1)
   2331 #define	CLUT_COLOR(i)      ((i * DAC_WIDTH * 2 / CLUT_WIDTH + 1) / 2)
   2332 
   2333 	vclk = GETPLL(sc, RADEON_VCLK_ECP_CNTL);
   2334 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk & ~RADEON_PIXCLK_DAC_ALWAYS_ONb);
   2335 
   2336 	if (crtc)
   2337 		SET32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2338 	else
   2339 		CLR32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2340 
   2341 	PUT32(sc, RADEON_PALETTE_INDEX, 0);
   2342 	if (sc->sc_displays[crtc].rd_bpp == 0)
   2343 		sc->sc_displays[crtc].rd_bpp = RADEONFB_DEFAULT_DEPTH;
   2344 
   2345 	if (sc->sc_displays[crtc].rd_bpp == 8) {
   2346 		/* ANSI palette */
   2347 		int j = 0;
   2348 
   2349                 for (i = 0; i <= CLUT_WIDTH; ++i) {
   2350                 	PUT32(sc, RADEON_PALETTE_30_DATA,
   2351 				(rasops_cmap[j] << 22) |
   2352 				(rasops_cmap[j + 1] << 12) |
   2353 				(rasops_cmap[j + 2] << 2));
   2354 			j += 3;
   2355 		}
   2356 	} else {
   2357 		/* linear ramp */
   2358 		for (i = 0; i <= CLUT_WIDTH; ++i) {
   2359 			PUT32(sc, RADEON_PALETTE_30_DATA,
   2360 			    (CLUT_COLOR(i) << 10) |
   2361 			    (CLUT_COLOR(i) << 20) |
   2362 			    (CLUT_COLOR(i)));
   2363 		}
   2364 	}
   2365 
   2366 	CLR32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2367 	PRINTREG(RADEON_DAC_CNTL2);
   2368 
   2369 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk);
   2370 }
   2371 
   2372 /*
   2373  * Bugs in some R300 hardware requires this when accessing CLOCK_CNTL_INDEX.
   2374  */
   2375 void
   2376 radeonfb_r300cg_workaround(struct radeonfb_softc *sc)
   2377 {
   2378 	uint32_t	tmp, save;
   2379 
   2380 	save = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   2381 	tmp = save & ~(0x3f | RADEON_PLL_WR_EN);
   2382 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, tmp);
   2383 	tmp = GET32(sc, RADEON_CLOCK_CNTL_DATA);
   2384 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, save);
   2385 }
   2386 
   2387 /*
   2388  * Acceleration entry points.
   2389  */
   2390 static void
   2391 radeonfb_putchar(void *cookie, int row, int col, u_int c, long attr)
   2392 {
   2393 	struct rasops_info	*ri = cookie;
   2394 	struct vcons_screen	*scr = ri->ri_hw;
   2395 	struct radeonfb_display	*dp = scr->scr_cookie;
   2396 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2397 	uint32_t		x, y, w, h;
   2398 	uint32_t		bg, fg, flg;
   2399 	uint8_t			*data;
   2400 
   2401 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2402 		return;
   2403 
   2404 	if (!CHAR_IN_FONT(c, font))
   2405 		return;
   2406 
   2407 	w = font->fontwidth;
   2408 	h = font->fontheight;
   2409 
   2410 	flg = attr & 0xff;
   2411 	if (flg & WSATTR_REVERSE) {
   2412 		fg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2413 		bg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2414 	} else {
   2415 		bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2416 		fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2417 	}
   2418 
   2419 	x = ri->ri_xorigin + col * w;
   2420 	y = ri->ri_yorigin + row * h;
   2421 
   2422 	if (c == 0x20) {
   2423 		radeonfb_rectfill(dp, x, y, w, h, bg);
   2424 	} else {
   2425 		data = (uint8_t *)font->data +
   2426 		    (c - font->firstchar) * ri->ri_fontscale;
   2427 
   2428 		radeonfb_setup_mono(dp, x, y, w, h, fg, bg);
   2429 		radeonfb_feed_bytes(dp, ri->ri_fontscale, data);
   2430 	}
   2431 }
   2432 
   2433 static void
   2434 radeonfb_eraserows(void *cookie, int row, int nrows, long fillattr)
   2435 {
   2436 	struct rasops_info	*ri = cookie;
   2437 	struct vcons_screen	*scr = ri->ri_hw;
   2438 	struct radeonfb_display	*dp = scr->scr_cookie;
   2439 	uint32_t		x, y, w, h, fg, bg, ul;
   2440 
   2441 	/* XXX: check for full emulation mode? */
   2442 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2443 		x = ri->ri_xorigin;
   2444 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   2445 		w = ri->ri_emuwidth;
   2446 		h = ri->ri_font->fontheight * nrows;
   2447 
   2448 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   2449 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   2450 	}
   2451 }
   2452 
   2453 static void
   2454 radeonfb_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
   2455 {
   2456 	struct rasops_info	*ri = cookie;
   2457 	struct vcons_screen	*scr = ri->ri_hw;
   2458 	struct radeonfb_display	*dp = scr->scr_cookie;
   2459 	uint32_t		x, ys, yd, w, h;
   2460 
   2461 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2462 		x = ri->ri_xorigin;
   2463 		ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow;
   2464 		yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow;
   2465 		w = ri->ri_emuwidth;
   2466 		h = ri->ri_font->fontheight * nrows;
   2467 		radeonfb_bitblt(dp, x, ys, x, yd, w, h,
   2468 		    RADEON_ROP3_S, 0xffffffff);
   2469 	}
   2470 }
   2471 
   2472 static void
   2473 radeonfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
   2474 {
   2475 	struct rasops_info	*ri = cookie;
   2476 	struct vcons_screen	*scr = ri->ri_hw;
   2477 	struct radeonfb_display	*dp = scr->scr_cookie;
   2478 	uint32_t		xs, xd, y, w, h;
   2479 
   2480 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2481 		xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol;
   2482 		xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol;
   2483 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   2484 		w = ri->ri_font->fontwidth * ncols;
   2485 		h = ri->ri_font->fontheight;
   2486 		radeonfb_bitblt(dp, xs, y, xd, y, w, h,
   2487 		    RADEON_ROP3_S, 0xffffffff);
   2488 	}
   2489 }
   2490 
   2491 static void
   2492 radeonfb_erasecols(void *cookie, int row, int startcol, int ncols,
   2493     long fillattr)
   2494 {
   2495 	struct rasops_info	*ri = cookie;
   2496 	struct vcons_screen	*scr = ri->ri_hw;
   2497 	struct radeonfb_display	*dp = scr->scr_cookie;
   2498 	uint32_t		x, y, w, h, fg, bg, ul;
   2499 
   2500 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2501 		x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol;
   2502 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   2503 		w = ri->ri_font->fontwidth * ncols;
   2504 		h = ri->ri_font->fontheight;
   2505 
   2506 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   2507 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   2508 	}
   2509 }
   2510 
   2511 static void
   2512 radeonfb_cursor(void *cookie, int on, int row, int col)
   2513 {
   2514 	struct rasops_info *ri = cookie;
   2515 	struct vcons_screen *scr = ri->ri_hw;
   2516 	struct radeonfb_display	*dp = scr->scr_cookie;
   2517 	int x, y, wi, he;
   2518 
   2519 	wi = ri->ri_font->fontwidth;
   2520 	he = ri->ri_font->fontheight;
   2521 
   2522 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2523 		x = ri->ri_ccol * wi + ri->ri_xorigin;
   2524 		y = ri->ri_crow * he + ri->ri_yorigin;
   2525 		/* first turn off the old cursor */
   2526 		if (ri->ri_flg & RI_CURSOR) {
   2527 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   2528 			    RADEON_ROP3_Dn, 0xffffffff);
   2529 			ri->ri_flg &= ~RI_CURSOR;
   2530 		}
   2531 		ri->ri_crow = row;
   2532 		ri->ri_ccol = col;
   2533 		/* then (possibly) turn on the new one */
   2534 		if (on) {
   2535 			x = ri->ri_ccol * wi + ri->ri_xorigin;
   2536 			y = ri->ri_crow * he + ri->ri_yorigin;
   2537 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   2538 			    RADEON_ROP3_Dn, 0xffffffff);
   2539 			ri->ri_flg |= RI_CURSOR;
   2540 		}
   2541 	} else {
   2542 		scr->scr_ri.ri_crow = row;
   2543 		scr->scr_ri.ri_ccol = col;
   2544 		scr->scr_ri.ri_flg &= ~RI_CURSOR;
   2545 	}
   2546 }
   2547 
   2548 static int
   2549 radeonfb_allocattr(void *cookie, int fg, int bg, int flags, long *attrp)
   2550 {
   2551 	if ((fg == 0) && (bg == 0)) {
   2552 		fg = WS_DEFAULT_FG;
   2553 		bg = WS_DEFAULT_BG;
   2554 	}
   2555 	*attrp = ((fg & 0xf) << 24) | ((bg & 0xf) << 16) | (flags & 0xff) << 8;
   2556 	return 0;
   2557 }
   2558 
   2559 /*
   2560  * Underlying acceleration support.
   2561  */
   2562 static void
   2563 radeonfb_setup_mono(struct radeonfb_display *dp, int xd, int yd, int width,
   2564     int height, uint32_t fg, uint32_t bg)
   2565 {
   2566 	struct radeonfb_softc	*sc = dp->rd_softc;
   2567 	uint32_t		gmc;
   2568 	uint32_t 		padded_width = (width+7) & 0xfff8;
   2569 	uint32_t		topleft, bottomright;
   2570 
   2571 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2572 
   2573 	if (width != padded_width) {
   2574 
   2575 		radeonfb_wait_fifo(sc, 2);
   2576 		topleft = ((yd << 16) & 0x1fff0000) | (xd & 0x1fff);
   2577 		bottomright = (((yd + height) << 16) & 0x1fff0000) |
   2578 		    ((xd + width) & 0x1fff);
   2579 		PUT32(sc, RADEON_SC_TOP_LEFT, topleft);
   2580 		PUT32(sc, RADEON_SC_BOTTOM_RIGHT, bottomright);
   2581 	}
   2582 
   2583 	radeonfb_wait_fifo(sc, 5);
   2584 
   2585 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2586 	    RADEON_GMC_BRUSH_NONE |
   2587 	    RADEON_GMC_SRC_DATATYPE_MONO_FG_BG |
   2588 	    //RADEON_GMC_BYTE_LSB_TO_MSB |
   2589 	    RADEON_GMC_DST_CLIPPING |
   2590 	    RADEON_ROP3_S |
   2591 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2592 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2593 	    RADEON_GMC_WR_MSK_DIS |
   2594 	    gmc);
   2595 
   2596 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, fg);
   2597 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, bg);
   2598 
   2599 	PUT32(sc, RADEON_DST_X_Y, (xd << 16) | yd);
   2600 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (padded_width << 16) | height);
   2601 
   2602 }
   2603 
   2604 static void
   2605 radeonfb_feed_bytes(struct radeonfb_display *dp, int count, uint8_t *data)
   2606 {
   2607 	struct radeonfb_softc	*sc = dp->rd_softc;
   2608 	int i;
   2609 	uint32_t latch = 0;
   2610 	int shift = 0;
   2611 
   2612 	for (i = 0; i < count; i++) {
   2613 		latch |= (data[i] << shift);
   2614 		if (shift == 24) {
   2615 			radeonfb_wait_fifo(sc, 1);
   2616 			PUT32(sc, RADEON_HOST_DATA0, latch);
   2617 			latch = 0;
   2618 			shift = 0;
   2619 		} else
   2620 			shift += 8;
   2621 	}
   2622 	if (shift != 0) {
   2623 		radeonfb_wait_fifo(sc, 1);
   2624 		PUT32(sc, RADEON_HOST_DATA0, latch);
   2625 	}
   2626 	radeonfb_unclip(sc);
   2627 }
   2628 
   2629 static void
   2630 radeonfb_rectfill(struct radeonfb_display *dp, int dstx, int dsty,
   2631     int width, int height, uint32_t color)
   2632 {
   2633 	struct radeonfb_softc	*sc = dp->rd_softc;
   2634 	uint32_t		gmc;
   2635 
   2636 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2637 
   2638 	radeonfb_wait_fifo(sc, 6);
   2639 
   2640 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2641 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   2642 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2643 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2644 	    RADEON_ROP3_P | gmc);
   2645 
   2646 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, color);
   2647 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   2648 	PUT32(sc, RADEON_DP_CNTL,
   2649 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2650 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2651 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   2652 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   2653 
   2654 	/*
   2655 	 * XXX: we don't wait for the fifo to empty -- that would slow
   2656 	 * things down!  The linux radeonfb driver waits, but xfree doesn't
   2657 	 */
   2658 	/* XXX: for now we do, to make it safe for direct drawing */
   2659 	radeonfb_engine_idle(sc);
   2660 }
   2661 
   2662 static void
   2663 radeonfb_bitblt(struct radeonfb_display *dp, int srcx, int srcy,
   2664     int dstx, int dsty, int width, int height, int rop, uint32_t mask)
   2665 {
   2666 	struct radeonfb_softc	*sc = dp->rd_softc;
   2667 	uint32_t		gmc;
   2668 	uint32_t		dir;
   2669 
   2670 	if (dsty < srcy) {
   2671 		dir = RADEON_DST_Y_TOP_TO_BOTTOM;
   2672 	} else {
   2673 		srcy += height - 1;
   2674 		dsty += height - 1;
   2675 		dir = 0;
   2676 	}
   2677 	if (dstx < srcx) {
   2678 		dir |= RADEON_DST_X_LEFT_TO_RIGHT;
   2679 	} else {
   2680 		srcx += width - 1;
   2681 		dstx += width - 1;
   2682 	}
   2683 
   2684 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2685 
   2686 	radeonfb_wait_fifo(sc, 6);
   2687 
   2688 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2689 	    //RADEON_GMC_SRC_CLIPPING |
   2690 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   2691 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2692 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2693 	    RADEON_DP_SRC_SOURCE_MEMORY |
   2694 	    rop | gmc);
   2695 
   2696 	PUT32(sc, RADEON_DP_WRITE_MASK, mask);
   2697 	PUT32(sc, RADEON_DP_CNTL, dir);
   2698 	PUT32(sc, RADEON_SRC_Y_X, (srcy << 16) | srcx);
   2699 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   2700 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   2701 
   2702 	/*
   2703 	 * XXX: we don't wait for the fifo to empty -- that would slow
   2704 	 * things down!  The linux radeonfb driver waits, but xfree doesn't
   2705 	 */
   2706 	/* XXX: for now we do, to make it safe for direct drawing */
   2707 	radeonfb_engine_idle(sc);
   2708 }
   2709 
   2710 static void
   2711 radeonfb_engine_idle(struct radeonfb_softc *sc)
   2712 {
   2713 	int	i;
   2714 
   2715 	radeonfb_wait_fifo(sc, 64);
   2716 	for (i = RADEON_TIMEOUT; i; i--) {
   2717 		if ((GET32(sc, RADEON_RBBM_STATUS) &
   2718 			RADEON_RBBM_ACTIVE) == 0) {
   2719 			radeonfb_engine_flush(sc);
   2720 			break;
   2721 		}
   2722 	}
   2723 }
   2724 
   2725 static void
   2726 radeonfb_wait_fifo(struct radeonfb_softc *sc, int n)
   2727 {
   2728 	int	i;
   2729 
   2730 	for (i = RADEON_TIMEOUT; i; i--) {
   2731 		if ((GET32(sc, RADEON_RBBM_STATUS) &
   2732 			RADEON_RBBM_FIFOCNT_MASK) >= n)
   2733 			return;
   2734 	}
   2735 #ifdef	DIAGNOSTIC
   2736 	if (!i)
   2737 		printf("%s: timed out waiting for fifo (%x)\n",
   2738 		    XNAME(sc), GET32(sc, RADEON_RBBM_STATUS));
   2739 #endif
   2740 }
   2741 
   2742 static void
   2743 radeonfb_engine_flush(struct radeonfb_softc *sc)
   2744 {
   2745 	int	i;
   2746 	SET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT, RADEON_RB2D_DC_FLUSH_ALL);
   2747 	for  (i = RADEON_TIMEOUT; i; i--) {
   2748 		if ((GET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT) &
   2749 			RADEON_RB2D_DC_BUSY) == 0)
   2750 			break;
   2751 	}
   2752 #ifdef DIAGNOSTIC
   2753 	if (!i)
   2754 		printf("%s: engine flush timed out!\n", XNAME(sc));
   2755 #endif
   2756 }
   2757 
   2758 static inline void
   2759 radeonfb_unclip(struct radeonfb_softc *sc)
   2760 {
   2761 
   2762 	radeonfb_wait_fifo(sc, 2);
   2763 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   2764 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   2765 }
   2766 
   2767 static void
   2768 radeonfb_engine_init(struct radeonfb_display *dp)
   2769 {
   2770 	struct radeonfb_softc	*sc = dp->rd_softc;
   2771 	uint32_t		pitch;
   2772 	volatile uint32_t	junk;
   2773 
   2774 	/* no 3D */
   2775 	PUT32(sc, RADEON_RB3D_CNTL, 0);
   2776 
   2777 	radeonfb_engine_reset(sc);
   2778 	pitch = ((dp->rd_virtx * (dp->rd_bpp / 8) + 0x3f)) >> 6;
   2779 	//pitch = ((sc->sc_maxx * (sc->sc_maxbpp / 8) + 0x3f)) >> 6;
   2780 
   2781 	radeonfb_wait_fifo(sc, 1);
   2782 	if (!IS_R300(sc))
   2783 		PUT32(sc, RADEON_RB2D_DSTCACHE_MODE, 0);
   2784 
   2785 	radeonfb_wait_fifo(sc, 3);
   2786 	PUT32(sc, RADEON_DEFAULT_PITCH_OFFSET,
   2787 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   2788 
   2789 
   2790 	PUT32(sc, RADEON_DST_PITCH_OFFSET,
   2791 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   2792 	PUT32(sc, RADEON_SRC_PITCH_OFFSET,
   2793 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   2794 
   2795 	radeonfb_wait_fifo(sc, 1);
   2796 #if _BYTE_ORDER == _BIG_ENDIAN
   2797 	SET32(sc, RADEON_DP_DATATYPE, RADEON_HOST_BIG_ENDIAN_EN);
   2798 #else
   2799 	CLR32(sc, RADEON_DP_DATATYPE, RADEON_HOST_BIG_ENDIAN_EN);
   2800 #endif
   2801 	junk = GET32(sc, RADEON_DP_DATATYPE);
   2802 
   2803 	/* default scissors -- no clipping */
   2804 	radeonfb_wait_fifo(sc, 1);
   2805 	PUT32(sc, RADEON_DEFAULT_SC_BOTTOM_RIGHT,
   2806 	    RADEON_DEFAULT_SC_RIGHT_MAX | RADEON_DEFAULT_SC_BOTTOM_MAX);
   2807 
   2808 	radeonfb_wait_fifo(sc, 1);
   2809 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2810 	    (dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT) |
   2811 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2812 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   2813 	    RADEON_GMC_SRC_DATATYPE_COLOR);
   2814 
   2815 	radeonfb_wait_fifo(sc, 7);
   2816 	PUT32(sc, RADEON_DST_LINE_START, 0);
   2817 	PUT32(sc, RADEON_DST_LINE_END, 0);
   2818 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, 0xffffffff);
   2819 	PUT32(sc, RADEON_DP_BRUSH_BKGD_CLR, 0);
   2820 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, 0xffffffff);
   2821 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, 0);
   2822 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   2823 
   2824 	radeonfb_engine_idle(sc);
   2825 }
   2826 
   2827 static void
   2828 radeonfb_engine_reset(struct radeonfb_softc *sc)
   2829 {
   2830 	uint32_t	hpc, rbbm, mclkcntl, clkindex;
   2831 
   2832 	radeonfb_engine_flush(sc);
   2833 
   2834 	clkindex = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   2835 	if (HAS_R300CG(sc))
   2836 		radeonfb_r300cg_workaround(sc);
   2837 	mclkcntl = GETPLL(sc, RADEON_MCLK_CNTL);
   2838 
   2839 	/*
   2840 	 * According to comments in XFree code, resetting the HDP via
   2841 	 * the RBBM_SOFT_RESET can cause bad behavior on some systems.
   2842 	 * So we use HOST_PATH_CNTL instead.
   2843 	 */
   2844 
   2845 	hpc = GET32(sc, RADEON_HOST_PATH_CNTL);
   2846 	rbbm = GET32(sc, RADEON_RBBM_SOFT_RESET);
   2847 	if (IS_R300(sc)) {
   2848 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   2849 		    RADEON_SOFT_RESET_CP |
   2850 		    RADEON_SOFT_RESET_HI |
   2851 		    RADEON_SOFT_RESET_E2);
   2852 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   2853 		PUT32(sc, RADEON_RBBM_SOFT_RESET, 0);
   2854 		/*
   2855 		 * XXX: this bit is not defined in any ATI docs I have,
   2856 		 * nor in the XFree code, but XFree does it.  Why?
   2857 		 */
   2858 		SET32(sc, RADEON_RB2D_DSTCACHE_MODE, (1<<17));
   2859 	} else {
   2860 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   2861 		    RADEON_SOFT_RESET_CP |
   2862 		    RADEON_SOFT_RESET_SE |
   2863 		    RADEON_SOFT_RESET_RE |
   2864 		    RADEON_SOFT_RESET_PP |
   2865 		    RADEON_SOFT_RESET_E2 |
   2866 		    RADEON_SOFT_RESET_RB);
   2867 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   2868 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm &
   2869 		    ~(RADEON_SOFT_RESET_CP |
   2870 			RADEON_SOFT_RESET_SE |
   2871 			RADEON_SOFT_RESET_RE |
   2872 			RADEON_SOFT_RESET_PP |
   2873 			RADEON_SOFT_RESET_E2 |
   2874 			RADEON_SOFT_RESET_RB));
   2875 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   2876 	}
   2877 
   2878 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc | RADEON_HDP_SOFT_RESET);
   2879 	GET32(sc, RADEON_HOST_PATH_CNTL);
   2880 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc);
   2881 
   2882 	if (IS_R300(sc))
   2883 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm);
   2884 
   2885 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, clkindex);
   2886 	PUTPLL(sc, RADEON_MCLK_CNTL, mclkcntl);
   2887 
   2888 	if (HAS_R300CG(sc))
   2889 		radeonfb_r300cg_workaround(sc);
   2890 }
   2891 
   2892 static int
   2893 radeonfb_set_curpos(struct radeonfb_display *dp, struct wsdisplay_curpos *pos)
   2894 {
   2895 	int		x, y;
   2896 
   2897 	x = pos->x;
   2898 	y = pos->y;
   2899 
   2900 	/*
   2901 	 * This doesn't let a cursor move off the screen.  I'm not
   2902 	 * sure if this will have negative effects for e.g. Xinerama.
   2903 	 * I'd guess Xinerama handles it by changing the cursor shape,
   2904 	 * but that needs verification.
   2905 	 */
   2906 	if (x >= dp->rd_virtx)
   2907 		x = dp->rd_virtx - 1;
   2908 	if (x < 0)
   2909 		x = 0;
   2910 	if (y >= dp->rd_virty)
   2911 		y = dp->rd_virty - 1;
   2912 	if (y < 0)
   2913 		y = 0;
   2914 
   2915 	dp->rd_cursor.rc_pos.x = x;
   2916 	dp->rd_cursor.rc_pos.y = y;
   2917 
   2918 	radeonfb_cursor_position(dp);
   2919 	return 0;
   2920 }
   2921 
   2922 static int
   2923 radeonfb_set_cursor(struct radeonfb_display *dp, struct wsdisplay_cursor *wc)
   2924 {
   2925 	unsigned	flags;
   2926 
   2927 	uint8_t		r[2], g[2], b[2];
   2928 	unsigned	index, count;
   2929 	int		i, err;
   2930 	int		pitch, size;
   2931 	struct radeonfb_cursor	nc;
   2932 
   2933 	flags = wc->which;
   2934 
   2935 	/* copy old values */
   2936 	nc = dp->rd_cursor;
   2937 
   2938 	if (flags & WSDISPLAY_CURSOR_DOCMAP) {
   2939 		index = wc->cmap.index;
   2940 		count = wc->cmap.count;
   2941 
   2942 		if (index >= 2 || (index + count) > 2)
   2943 			return EINVAL;
   2944 
   2945 		err = copyin(wc->cmap.red, &r[index], count);
   2946 		if (err)
   2947 			return err;
   2948 		err = copyin(wc->cmap.green, &g[index], count);
   2949 		if (err)
   2950 			return err;
   2951 		err = copyin(wc->cmap.blue, &b[index], count);
   2952 		if (err)
   2953 			return err;
   2954 
   2955 		for (i = index; i < index + count; i++) {
   2956 			nc.rc_cmap[i] =
   2957 			    (r[i] << 16) + (g[i] << 8) + (b[i] << 0);
   2958 		}
   2959 	}
   2960 
   2961 	if (flags & WSDISPLAY_CURSOR_DOSHAPE) {
   2962 		if ((wc->size.x > RADEON_CURSORMAXX) ||
   2963 		    (wc->size.y > RADEON_CURSORMAXY))
   2964 			return EINVAL;
   2965 
   2966 		/* figure bytes per line */
   2967 		pitch = (wc->size.x + 7) / 8;
   2968 		size = pitch * wc->size.y;
   2969 
   2970 		/* clear the old cursor and mask */
   2971 		memset(nc.rc_image, 0, 512);
   2972 		memset(nc.rc_mask, 0, 512);
   2973 
   2974 		nc.rc_size = wc->size;
   2975 
   2976 		if ((err = copyin(wc->image, nc.rc_image, size)) != 0)
   2977 			return err;
   2978 
   2979 		if ((err = copyin(wc->mask, nc.rc_mask, size)) != 0)
   2980 			return err;
   2981 	}
   2982 
   2983 	if (flags & WSDISPLAY_CURSOR_DOHOT) {
   2984 		nc.rc_hot = wc->hot;
   2985 		if (nc.rc_hot.x >= nc.rc_size.x)
   2986 			nc.rc_hot.x = nc.rc_size.x - 1;
   2987 		if (nc.rc_hot.y >= nc.rc_size.y)
   2988 			nc.rc_hot.y = nc.rc_size.y - 1;
   2989 	}
   2990 
   2991 	if (flags & WSDISPLAY_CURSOR_DOPOS) {
   2992 		nc.rc_pos = wc->pos;
   2993 		if (nc.rc_pos.x >= dp->rd_virtx)
   2994 			nc.rc_pos.x = dp->rd_virtx - 1;
   2995 #if 0
   2996 		if (nc.rc_pos.x < 0)
   2997 			nc.rc_pos.x = 0;
   2998 #endif
   2999 		if (nc.rc_pos.y >= dp->rd_virty)
   3000 			nc.rc_pos.y = dp->rd_virty - 1;
   3001 #if 0
   3002 		if (nc.rc_pos.y < 0)
   3003 			nc.rc_pos.y = 0;
   3004 #endif
   3005 	}
   3006 	if (flags & WSDISPLAY_CURSOR_DOCUR) {
   3007 		nc.rc_visible = wc->enable;
   3008 	}
   3009 
   3010 	dp->rd_cursor = nc;
   3011 	radeonfb_cursor_update(dp, wc->which);
   3012 
   3013 	return 0;
   3014 }
   3015 
   3016 /*
   3017  * Change the cursor shape.  Call this with the cursor locked to avoid
   3018  * flickering/tearing.
   3019  */
   3020 static void
   3021 radeonfb_cursor_shape(struct radeonfb_display *dp)
   3022 {
   3023 	uint8_t	and[512], xor[512];
   3024 	int	i, j, src, dst, pitch;
   3025 	const uint8_t	*msk = dp->rd_cursor.rc_mask;
   3026 	const uint8_t	*img = dp->rd_cursor.rc_image;
   3027 
   3028 	/*
   3029 	 * Radeon cursor data interleaves one line of AND data followed
   3030 	 * by a line of XOR data.  (Each line corresponds to a whole hardware
   3031 	 * pitch - i.e. 64 pixels or 8 bytes.)
   3032 	 *
   3033 	 * The cursor is displayed using the following table:
   3034 	 *
   3035 	 * AND	XOR	Result
   3036 	 * ----------------------
   3037 	 *  0    0	Cursor color 0
   3038 	 *  0	 1	Cursor color 1
   3039 	 *  1	 0	Transparent
   3040 	 *  1	 1	Complement of background
   3041 	 *
   3042 	 * Our masks are therefore different from what we were passed.
   3043 	 * Passed in, I'm assuming the data represents either color 0 or 1,
   3044 	 * and a mask, so the passed in table looks like:
   3045 	 *
   3046 	 * IMG	Mask	Result
   3047 	 * -----------------------
   3048 	 *  0	 0	Transparent
   3049 	 *  0	 1	Cursor color 0
   3050 	 *  1	 0	Transparent
   3051 	 *  1	 1	Cursor color 1
   3052 	 *
   3053 	 * IF mask bit == 1, AND = 0, XOR = color.
   3054 	 * IF mask bit == 0, AND = 1, XOR = 0.
   3055 	 *
   3056 	 * hence:	AND = ~(mask);	XOR = color & ~(mask);
   3057 	 */
   3058 
   3059 	pitch = ((dp->rd_cursor.rc_size.x + 7) / 8);
   3060 
   3061 	/* start by assuming all bits are transparent */
   3062 	memset(and, 0xff, 512);
   3063 	memset(xor, 0x00, 512);
   3064 
   3065 	src = 0;
   3066 	dst = 0;
   3067 	for (i = 0; i < 64; i++) {
   3068 		for (j = 0; j < 64; j += 8) {
   3069 			if ((i < dp->rd_cursor.rc_size.y) &&
   3070 			    (j < dp->rd_cursor.rc_size.x)) {
   3071 
   3072 				/* take care to leave odd bits alone */
   3073 				and[dst] &= ~(msk[src]);
   3074 				xor[dst] = img[src] & msk[src];
   3075 				src++;
   3076 			}
   3077 			dst++;
   3078 		}
   3079 	}
   3080 
   3081 	/* copy the image into place */
   3082 	for (i = 0; i < 64; i++) {
   3083 		memcpy((uint8_t *)dp->rd_curptr + (i * 16),
   3084 		    &and[i * 8], 8);
   3085 		memcpy((uint8_t *)dp->rd_curptr + (i * 16) + 8,
   3086 		    &xor[i * 8], 8);
   3087 	}
   3088 }
   3089 
   3090 static void
   3091 radeonfb_cursor_position(struct radeonfb_display *dp)
   3092 {
   3093 	struct radeonfb_softc	*sc = dp->rd_softc;
   3094 	uint32_t		offset, hvoff, hvpos;	/* registers */
   3095 	uint32_t		coff;			/* cursor offset */
   3096 	int			i, x, y, xoff, yoff, crtcoff;
   3097 
   3098 	/*
   3099 	 * XXX: this also needs to handle pan/scan
   3100 	 */
   3101 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3102 
   3103 		struct radeonfb_crtc	*rcp = &dp->rd_crtcs[i];
   3104 
   3105 		if (rcp->rc_number) {
   3106 			offset = RADEON_CUR2_OFFSET;
   3107 			hvoff = RADEON_CUR2_HORZ_VERT_OFF;
   3108 			hvpos = RADEON_CUR2_HORZ_VERT_POSN;
   3109 			crtcoff = RADEON_CRTC2_OFFSET;
   3110 		} else {
   3111 			offset = RADEON_CUR_OFFSET;
   3112 			hvoff = RADEON_CUR_HORZ_VERT_OFF;
   3113 			hvpos = RADEON_CUR_HORZ_VERT_POSN;
   3114 			crtcoff = RADEON_CRTC_OFFSET;
   3115 		}
   3116 
   3117 		x = dp->rd_cursor.rc_pos.x;
   3118 		y = dp->rd_cursor.rc_pos.y;
   3119 
   3120 		while (y < rcp->rc_yoffset) {
   3121 			rcp->rc_yoffset -= RADEON_PANINCREMENT;
   3122 		}
   3123 		while (y >= (rcp->rc_yoffset + rcp->rc_videomode.vdisplay)) {
   3124 			rcp->rc_yoffset += RADEON_PANINCREMENT;
   3125 		}
   3126 		while (x < rcp->rc_xoffset) {
   3127 			rcp->rc_xoffset -= RADEON_PANINCREMENT;
   3128 		}
   3129 		while (x >= (rcp->rc_xoffset + rcp->rc_videomode.hdisplay)) {
   3130 			rcp->rc_xoffset += RADEON_PANINCREMENT;
   3131 		}
   3132 
   3133 		/* adjust for the cursor's hotspot */
   3134 		x -= dp->rd_cursor.rc_hot.x;
   3135 		y -= dp->rd_cursor.rc_hot.y;
   3136 		xoff = yoff = 0;
   3137 
   3138 		if (x >= dp->rd_virtx)
   3139 			x = dp->rd_virtx - 1;
   3140 		if (y >= dp->rd_virty)
   3141 			y = dp->rd_virty - 1;
   3142 
   3143 		/* now adjust cursor so it is relative to viewport */
   3144 		x -= rcp->rc_xoffset;
   3145 		y -= rcp->rc_yoffset;
   3146 
   3147 		/*
   3148 		 * no need to check for fall off, because we should
   3149 		 * never move off the screen entirely!
   3150 		 */
   3151 		coff = 0;
   3152 		if (x < 0) {
   3153 			xoff = -x;
   3154 			x = 0;
   3155 		}
   3156 		if (y < 0) {
   3157 			yoff = -y;
   3158 			y = 0;
   3159 			coff = (yoff * 2) * 8;
   3160 		}
   3161 
   3162 		/* pan the display */
   3163 		PUT32(sc, crtcoff, (rcp->rc_yoffset * dp->rd_stride) +
   3164 		    rcp->rc_xoffset);
   3165 
   3166 		PUT32(sc, offset, (dp->rd_curoff + coff) | RADEON_CUR_LOCK);
   3167 		PUT32(sc, hvoff, (xoff << 16) | (yoff) | RADEON_CUR_LOCK);
   3168 		/* NB: this unlocks the cursor */
   3169 		PUT32(sc, hvpos, (x << 16) | y);
   3170 	}
   3171 }
   3172 
   3173 static void
   3174 radeonfb_cursor_visible(struct radeonfb_display *dp)
   3175 {
   3176 	int		i;
   3177 	uint32_t	gencntl, bit;
   3178 
   3179 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3180 		if (dp->rd_crtcs[i].rc_number) {
   3181 			gencntl = RADEON_CRTC2_GEN_CNTL;
   3182 			bit = RADEON_CRTC2_CUR_EN;
   3183 		} else {
   3184 			gencntl = RADEON_CRTC_GEN_CNTL;
   3185 			bit = RADEON_CRTC_CUR_EN;
   3186 		}
   3187 
   3188 		if (dp->rd_cursor.rc_visible)
   3189 			SET32(dp->rd_softc, gencntl, bit);
   3190 		else
   3191 			CLR32(dp->rd_softc, gencntl, bit);
   3192 	}
   3193 }
   3194 
   3195 static void
   3196 radeonfb_cursor_cmap(struct radeonfb_display *dp)
   3197 {
   3198 	int		i;
   3199 	uint32_t	c0reg, c1reg;
   3200 	struct radeonfb_softc	*sc = dp->rd_softc;
   3201 
   3202 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3203 		if (dp->rd_crtcs[i].rc_number) {
   3204 			c0reg = RADEON_CUR2_CLR0;
   3205 			c1reg = RADEON_CUR2_CLR1;
   3206 		} else {
   3207 			c0reg = RADEON_CUR_CLR0;
   3208 			c1reg = RADEON_CUR_CLR1;
   3209 		}
   3210 
   3211 		PUT32(sc, c0reg, dp->rd_cursor.rc_cmap[0]);
   3212 		PUT32(sc, c1reg, dp->rd_cursor.rc_cmap[1]);
   3213 	}
   3214 }
   3215 
   3216 static void
   3217 radeonfb_cursor_update(struct radeonfb_display *dp, unsigned which)
   3218 {
   3219 	struct radeonfb_softc	*sc;
   3220 	int		i;
   3221 
   3222 	sc = dp->rd_softc;
   3223 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3224 		if (dp->rd_crtcs[i].rc_number) {
   3225 			SET32(sc, RADEON_CUR2_OFFSET, RADEON_CUR_LOCK);
   3226 		} else {
   3227 			SET32(sc, RADEON_CUR_OFFSET,RADEON_CUR_LOCK);
   3228 		}
   3229 	}
   3230 
   3231 	if (which & WSDISPLAY_CURSOR_DOCMAP)
   3232 		radeonfb_cursor_cmap(dp);
   3233 
   3234 	if (which & WSDISPLAY_CURSOR_DOSHAPE)
   3235 		radeonfb_cursor_shape(dp);
   3236 
   3237 	if (which & WSDISPLAY_CURSOR_DOCUR)
   3238 		radeonfb_cursor_visible(dp);
   3239 
   3240 	/* this one is unconditional, because it updates other stuff */
   3241 	radeonfb_cursor_position(dp);
   3242 }
   3243 
   3244 static struct videomode *
   3245 radeonfb_best_refresh(struct videomode *m1, struct videomode *m2)
   3246 {
   3247 	int	r1, r2;
   3248 
   3249 	/* otherwise pick the higher refresh rate */
   3250 	r1 = DIVIDE(DIVIDE(m1->dot_clock, m1->htotal), m1->vtotal);
   3251 	r2 = DIVIDE(DIVIDE(m2->dot_clock, m2->htotal), m2->vtotal);
   3252 
   3253 	return (r1 < r2 ? m2 : m1);
   3254 }
   3255 
   3256 static const struct videomode *
   3257 radeonfb_port_mode(struct radeonfb_softc *sc, struct radeonfb_port *rp,
   3258     int x, int y)
   3259 {
   3260 	struct edid_info	*ep = &rp->rp_edid;
   3261 	struct videomode	*vmp = NULL;
   3262 	int			i;
   3263 
   3264 	if (!rp->rp_edid_valid) {
   3265 		/* fallback to safe mode */
   3266 		return radeonfb_modelookup(sc->sc_defaultmode);
   3267 	}
   3268 
   3269 	/* always choose the preferred mode first! */
   3270 	if (ep->edid_preferred_mode) {
   3271 
   3272 		/* XXX: add auto-stretching support for native mode */
   3273 
   3274 		/* this may want panning to occur, btw */
   3275 		if ((ep->edid_preferred_mode->hdisplay <= x) &&
   3276 		    (ep->edid_preferred_mode->vdisplay <= y))
   3277 			return ep->edid_preferred_mode;
   3278 	}
   3279 
   3280 	for (i = 0; i < ep->edid_nmodes; i++) {
   3281 		/*
   3282 		 * We elect to pick a resolution that is too large for
   3283 		 * the monitor than one that is too small.  This means
   3284 		 * that we will prefer to pan rather than to try to
   3285 		 * center a smaller display on a larger screen.  In
   3286 		 * practice, this shouldn't matter because if a
   3287 		 * monitor can support a larger resolution, it can
   3288 		 * probably also support the smaller.  A specific
   3289 		 * exception is fixed format panels, but hopefully
   3290 		 * they are properly dealt with by the "autostretch"
   3291 		 * logic above.
   3292 		 */
   3293 		if ((ep->edid_modes[i].hdisplay > x) ||
   3294 		    (ep->edid_modes[i].vdisplay > y)) {
   3295 			continue;
   3296 		}
   3297 
   3298 		/*
   3299 		 * at this point, the display mode is no larger than
   3300 		 * what we've requested.
   3301 		 */
   3302 		if (vmp == NULL)
   3303 			vmp = &ep->edid_modes[i];
   3304 
   3305 		/* eliminate smaller modes */
   3306 		if ((vmp->hdisplay >= ep->edid_modes[i].hdisplay) ||
   3307 		    (vmp->vdisplay >= ep->edid_modes[i].vdisplay))
   3308 			continue;
   3309 
   3310 		if ((vmp->hdisplay < ep->edid_modes[i].hdisplay) ||
   3311 		    (vmp->vdisplay < ep->edid_modes[i].vdisplay)) {
   3312 			vmp = &ep->edid_modes[i];
   3313 			continue;
   3314 		}
   3315 
   3316 		KASSERT(vmp->hdisplay == ep->edid_modes[i].hdisplay);
   3317 		KASSERT(vmp->vdisplay == ep->edid_modes[i].vdisplay);
   3318 
   3319 		vmp = radeonfb_best_refresh(vmp, &ep->edid_modes[i]);
   3320 	}
   3321 
   3322 	return (vmp ? vmp : radeonfb_modelookup(sc->sc_defaultmode));
   3323 }
   3324 
   3325 static int
   3326 radeonfb_hasres(struct videomode *list, int nlist, int x, int y)
   3327 {
   3328 	int	i;
   3329 
   3330 	for (i = 0; i < nlist; i++) {
   3331 		if ((x == list[i].hdisplay) &&
   3332 		    (y == list[i].vdisplay)) {
   3333 			return 1;
   3334 		}
   3335 	}
   3336 	return 0;
   3337 }
   3338 
   3339 static void
   3340 radeonfb_pickres(struct radeonfb_display *dp, uint16_t *x, uint16_t *y,
   3341     int pan)
   3342 {
   3343 	struct radeonfb_port	*rp;
   3344 	struct edid_info	*ep;
   3345 	int			i, j;
   3346 
   3347 	*x = 0;
   3348 	*y = 0;
   3349 
   3350 	if (pan) {
   3351 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   3352 			rp = dp->rd_crtcs[i].rc_port;
   3353 			ep = &rp->rp_edid;
   3354 			if (!rp->rp_edid_valid) {
   3355 				/* monitor not present */
   3356 				continue;
   3357 			}
   3358 
   3359 			/*
   3360 			 * For now we are ignoring "conflict" that
   3361 			 * could occur when mixing some modes like
   3362 			 * 1280x1024 and 1400x800.  It isn't clear
   3363 			 * which is better, so the first one wins.
   3364 			 */
   3365 			for (j = 0; j < ep->edid_nmodes; j++) {
   3366 				/*
   3367 				 * ignore resolutions that are too big for
   3368 				 * the radeon
   3369 				 */
   3370 				if (ep->edid_modes[j].hdisplay >
   3371 				    dp->rd_softc->sc_maxx)
   3372 					continue;
   3373 				if (ep->edid_modes[j].vdisplay >
   3374 				    dp->rd_softc->sc_maxy)
   3375 					continue;
   3376 
   3377 				/*
   3378 				 * pick largest resolution, the
   3379 				 * smaller monitor will pan
   3380 				 */
   3381 				if ((ep->edid_modes[j].hdisplay >= *x) &&
   3382 				    (ep->edid_modes[j].vdisplay >= *y)) {
   3383 					*x = ep->edid_modes[j].hdisplay;
   3384 					*y = ep->edid_modes[j].vdisplay;
   3385 				}
   3386 			}
   3387 		}
   3388 
   3389 	} else {
   3390 		struct videomode	modes[64];
   3391 		int			nmodes = 0;
   3392 		int			valid = 0;
   3393 
   3394 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   3395 			/*
   3396 			 * pick the largest resolution in common.
   3397 			 */
   3398 			rp = dp->rd_crtcs[i].rc_port;
   3399 			ep = &rp->rp_edid;
   3400 
   3401 			if (!rp->rp_edid_valid)
   3402 				continue;
   3403 
   3404 			if (!valid) {
   3405 				/*
   3406 				 * Pick the preferred mode for this port
   3407 				 * if available.
   3408 				 */
   3409 				if (ep->edid_preferred_mode) {
   3410 					struct videomode *vmp =
   3411 						ep->edid_preferred_mode;
   3412 
   3413 					if ((vmp->hdisplay <=
   3414 					     dp->rd_softc->sc_maxx) &&
   3415 					    (vmp->vdisplay <=
   3416 					     dp->rd_softc->sc_maxy))
   3417 						modes[nmodes++] = *vmp;
   3418 				} else {
   3419 
   3420 					/* initialize starting list */
   3421 					for (j = 0; j < ep->edid_nmodes; j++) {
   3422 						/*
   3423 						 * ignore resolutions that are
   3424 						 * too big for the radeon
   3425 						 */
   3426 						if (ep->edid_modes[j].hdisplay >
   3427 						    dp->rd_softc->sc_maxx)
   3428 							continue;
   3429 						if (ep->edid_modes[j].vdisplay >
   3430 						    dp->rd_softc->sc_maxy)
   3431 							continue;
   3432 
   3433 						modes[nmodes] =
   3434 							ep->edid_modes[j];
   3435 						nmodes++;
   3436 					}
   3437 				}
   3438 				valid = 1;
   3439 			} else {
   3440 				/* merge into preexisting list */
   3441 				for (j = 0; j < nmodes; j++) {
   3442 					if (!radeonfb_hasres(ep->edid_modes,
   3443 						ep->edid_nmodes,
   3444 						modes[j].hdisplay,
   3445 						modes[j].vdisplay)) {
   3446 						modes[j] = modes[nmodes];
   3447 						j--;
   3448 						nmodes--;
   3449 					}
   3450 				}
   3451 			}
   3452 		}
   3453 
   3454 		/* now we have to pick from the merged list */
   3455 		for (i = 0; i < nmodes; i++) {
   3456 			if ((modes[i].hdisplay >= *x) &&
   3457 			    (modes[i].vdisplay >= *y)) {
   3458 				*x = modes[i].hdisplay;
   3459 				*y = modes[i].vdisplay;
   3460 			}
   3461 		}
   3462 	}
   3463 
   3464 	if ((*x == 0) || (*y == 0)) {
   3465 		/* fallback to safe mode */
   3466 		*x = 640;
   3467 		*y = 480;
   3468 	}
   3469 }
   3470 
   3471 /*
   3472  * backlight levels are linear on:
   3473  * - RV200, RV250, RV280, RV350
   3474  * - but NOT on PowerBook4,3 6,3 6,5
   3475  * according to Linux' radeonfb
   3476  */
   3477 
   3478 /* Get the current backlight level for the display.  */
   3479 
   3480 static int
   3481 radeonfb_get_backlight(struct radeonfb_display *dp)
   3482 {
   3483 	int s;
   3484 	uint32_t level;
   3485 
   3486 	s = spltty();
   3487 
   3488 	level = radeonfb_get32(dp->rd_softc, RADEON_LVDS_GEN_CNTL);
   3489 	level &= RADEON_LVDS_BL_MOD_LEV_MASK;
   3490 	level >>= RADEON_LVDS_BL_MOD_LEV_SHIFT;
   3491 
   3492 	/*
   3493 	 * On some chips, we should negate the backlight level.
   3494 	 * XXX Find out on which chips.
   3495 	 */
   3496 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT)
   3497 	level = RADEONFB_BACKLIGHT_MAX - level;
   3498 
   3499 	splx(s);
   3500 
   3501 	return level;
   3502 }
   3503 
   3504 /* Set the backlight to the given level for the display.  */
   3505 
   3506 static int
   3507 radeonfb_set_backlight(struct radeonfb_display *dp, int level)
   3508 {
   3509 	struct radeonfb_softc *sc;
   3510 	int rlevel, s;
   3511 	uint32_t lvds;
   3512 
   3513 	s = spltty();
   3514 
   3515 	if (level < 0)
   3516 		level = 0;
   3517 	else if (level >= RADEONFB_BACKLIGHT_MAX)
   3518 		level = RADEONFB_BACKLIGHT_MAX;
   3519 
   3520 	sc = dp->rd_softc;
   3521 
   3522 	/* On some chips, we should negate the backlight level. */
   3523 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT) {
   3524 	rlevel = RADEONFB_BACKLIGHT_MAX - level;
   3525 	} else
   3526 	rlevel = level;
   3527 
   3528 	callout_stop(&dp->rd_bl_lvds_co);
   3529 	radeonfb_engine_idle(sc);
   3530 
   3531 	/*
   3532 	 * Turn off the display if the backlight is set to 0, since the
   3533 	 * display is useless without backlight anyway.
   3534 	 */
   3535 	if (level == 0)
   3536 		radeonfb_blank(dp, 1);
   3537 	else if (radeonfb_get_backlight(dp) == 0)
   3538 		radeonfb_blank(dp, 0);
   3539 
   3540 	lvds = radeonfb_get32(sc, RADEON_LVDS_GEN_CNTL);
   3541 	lvds &= ~RADEON_LVDS_DISPLAY_DIS;
   3542 	if (!(lvds & RADEON_LVDS_BLON) || !(lvds & RADEON_LVDS_ON)) {
   3543 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_DIGON;
   3544 		lvds |= RADEON_LVDS_BLON | RADEON_LVDS_EN;
   3545 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   3546 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   3547 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   3548 		lvds |= RADEON_LVDS_ON;
   3549 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_BL_MOD_EN;
   3550 	} else {
   3551 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   3552 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   3553 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   3554 	}
   3555 
   3556 	dp->rd_bl_lvds_val &= ~RADEON_LVDS_STATE_MASK;
   3557 	dp->rd_bl_lvds_val |= lvds & RADEON_LVDS_STATE_MASK;
   3558 	/* XXX What is the correct delay? */
   3559 	callout_schedule(&dp->rd_bl_lvds_co, 200 * hz);
   3560 
   3561 	splx(s);
   3562 
   3563 	return 0;
   3564 }
   3565 
   3566 /*
   3567  * Callout function for delayed operations on the LVDS_GEN_CNTL register.
   3568  * Set the delayed bits in the register, and clear the stored delayed
   3569  * value.
   3570  */
   3571 
   3572 static void radeonfb_lvds_callout(void *arg)
   3573 {
   3574 	struct radeonfb_display *dp = arg;
   3575 	int s;
   3576 
   3577 	s = splhigh();
   3578 
   3579 	radeonfb_mask32(dp->rd_softc, RADEON_LVDS_GEN_CNTL, ~0,
   3580 			dp->rd_bl_lvds_val);
   3581 	dp->rd_bl_lvds_val = 0;
   3582 
   3583 	splx(s);
   3584 }
   3585 
   3586 static void
   3587 radeonfb_brightness_up(device_t dev)
   3588 {
   3589 	struct radeonfb_softc *sc = device_private(dev);
   3590 	int level;
   3591 
   3592 	/* we assume the main display is the first one - need a better way */
   3593 	if (sc->sc_ndisplays < 1) return;
   3594 	level = radeonfb_get_backlight(&sc->sc_displays[0]);
   3595 	level = min(RADEONFB_BACKLIGHT_MAX, level + 5);
   3596 	radeonfb_set_backlight(&sc->sc_displays[0], level);
   3597 }
   3598 
   3599 static void
   3600 radeonfb_brightness_down(device_t dev)
   3601 {
   3602 	struct radeonfb_softc *sc = device_private(dev);
   3603 	int level;
   3604 
   3605 	/* we assume the main display is the first one - need a better way */
   3606 	if (sc->sc_ndisplays < 1) return;
   3607 	level = radeonfb_get_backlight(&sc->sc_displays[0]);
   3608 	level = max(0, level - 5);
   3609 	radeonfb_set_backlight(&sc->sc_displays[0], level);
   3610 }
   3611