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radeonfb.c revision 1.70
      1 /*	$NetBSD: radeonfb.c,v 1.70 2012/12/31 10:31:19 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 1.70 2012/12/31 10:31:19 macallan Exp $");
     74 
     75 #include <sys/param.h>
     76 #include <sys/systm.h>
     77 #include <sys/device.h>
     78 #include <sys/malloc.h>
     79 #include <sys/bus.h>
     80 #include <sys/kernel.h>
     81 #include <sys/lwp.h>
     82 #include <sys/kauth.h>
     83 
     84 #include <dev/wscons/wsdisplayvar.h>
     85 #include <dev/wscons/wsconsio.h>
     86 #include <dev/wsfont/wsfont.h>
     87 #include <dev/rasops/rasops.h>
     88 #include <dev/videomode/videomode.h>
     89 #include <dev/videomode/edidvar.h>
     90 #include <dev/wscons/wsdisplay_vconsvar.h>
     91 #include <dev/pci/wsdisplay_pci.h>
     92 #include <dev/wscons/wsdisplay_glyphcachevar.h>
     93 
     94 #include <dev/pci/pcidevs.h>
     95 #include <dev/pci/pcireg.h>
     96 #include <dev/pci/pcivar.h>
     97 #include <dev/pci/pciio.h>
     98 #include <dev/pci/radeonfbreg.h>
     99 #include <dev/pci/radeonfbvar.h>
    100 #include "opt_radeonfb.h"
    101 #include "opt_vcons.h"
    102 
    103 #ifdef RADEONFB_DEPTH_32
    104 #define RADEONFB_DEFAULT_DEPTH 32
    105 #else
    106 #define RADEONFB_DEFAULT_DEPTH 8
    107 #endif
    108 
    109 static int radeonfb_match(device_t, cfdata_t, void *);
    110 static void radeonfb_attach(device_t, device_t, void *);
    111 static int radeonfb_ioctl(void *, void *, unsigned long, void *, int,
    112     struct lwp *);
    113 static paddr_t radeonfb_mmap(void *, void *, off_t, int);
    114 static int radeonfb_scratch_test(struct radeonfb_softc *, int, uint32_t);
    115 static void radeonfb_loadbios(struct radeonfb_softc *,
    116     const struct pci_attach_args *);
    117 
    118 static uintmax_t radeonfb_getprop_num(struct radeonfb_softc *, const char *,
    119     uintmax_t);
    120 static int radeonfb_getclocks(struct radeonfb_softc *);
    121 static int radeonfb_gettmds(struct radeonfb_softc *);
    122 static int radeonfb_calc_dividers(struct radeonfb_softc *, uint32_t,
    123     uint32_t *, uint32_t *);
    124 static int radeonfb_getconnectors(struct radeonfb_softc *);
    125 static const struct videomode *radeonfb_modelookup(const char *);
    126 static void radeonfb_init_screen(void *, struct vcons_screen *, int, long *);
    127 static void radeonfb_pllwriteupdate(struct radeonfb_softc *, int);
    128 static void radeonfb_pllwaitatomicread(struct radeonfb_softc *, int);
    129 static void radeonfb_program_vclk(struct radeonfb_softc *, int, int);
    130 static void radeonfb_modeswitch(struct radeonfb_display *);
    131 static void radeonfb_setcrtc(struct radeonfb_display *, int);
    132 static void radeonfb_init_misc(struct radeonfb_softc *);
    133 static void radeonfb_set_fbloc(struct radeonfb_softc *);
    134 static void radeonfb_init_palette(struct radeonfb_display *);
    135 static void radeonfb_r300cg_workaround(struct radeonfb_softc *);
    136 
    137 static int radeonfb_isblank(struct radeonfb_display *);
    138 static void radeonfb_blank(struct radeonfb_display *, int);
    139 static int radeonfb_set_cursor(struct radeonfb_display *,
    140     struct wsdisplay_cursor *);
    141 static int radeonfb_set_curpos(struct radeonfb_display *,
    142     struct wsdisplay_curpos *);
    143 
    144 /* acceleration support */
    145 static void  radeonfb_rectfill(struct radeonfb_display *, int dstx, int dsty,
    146     int width, int height, uint32_t color);
    147 static void  radeonfb_rectfill_a(void *, int, int, int, int, long);
    148 static void radeonfb_bitblt(void *, int srcx, int srcy,
    149     int dstx, int dsty, int width, int height, int rop);
    150 
    151 /* hw cursor support */
    152 static void radeonfb_cursor_cmap(struct radeonfb_display *);
    153 static void radeonfb_cursor_shape(struct radeonfb_display *);
    154 static void radeonfb_cursor_position(struct radeonfb_display *);
    155 static void radeonfb_cursor_visible(struct radeonfb_display *);
    156 static void radeonfb_cursor_update(struct radeonfb_display *, unsigned);
    157 
    158 static inline void radeonfb_wait_fifo(struct radeonfb_softc *, int);
    159 static void radeonfb_engine_idle(struct radeonfb_softc *);
    160 static void radeonfb_engine_flush(struct radeonfb_softc *);
    161 static void radeonfb_engine_reset(struct radeonfb_softc *);
    162 static void radeonfb_engine_init(struct radeonfb_display *);
    163 static inline void radeonfb_unclip(struct radeonfb_softc *);
    164 
    165 static void radeonfb_eraserows(void *, int, int, long);
    166 static void radeonfb_erasecols(void *, int, int, int, long);
    167 static void radeonfb_copyrows(void *, int, int, int);
    168 static void radeonfb_copycols(void *, int, int, int, int);
    169 static void radeonfb_cursor(void *, int, int, int);
    170 static void radeonfb_putchar(void *, int, int, unsigned, long);
    171 static void radeonfb_putchar_aa32(void *, int, int, unsigned, long);
    172 static void radeonfb_putchar_aa8(void *, int, int, unsigned, long);
    173 static void radeonfb_putchar_wrapper(void *, int, int, unsigned, long);
    174 
    175 static int radeonfb_set_backlight(struct radeonfb_display *, int);
    176 static int radeonfb_get_backlight(struct radeonfb_display *);
    177 static void radeonfb_switch_backlight(struct radeonfb_display *, int);
    178 static void radeonfb_lvds_callout(void *);
    179 
    180 static void radeonfb_brightness_up(device_t);
    181 static void radeonfb_brightness_down(device_t);
    182 
    183 static struct videomode *radeonfb_best_refresh(struct videomode *,
    184     struct videomode *);
    185 static void radeonfb_pickres(struct radeonfb_display *, uint16_t *,
    186     uint16_t *, int);
    187 static const struct videomode *radeonfb_port_mode(struct radeonfb_softc *,
    188     struct radeonfb_port *, int, int);
    189 
    190 static int radeonfb_drm_print(void *, const char *);
    191 
    192 #ifdef	RADEONFB_DEBUG
    193 int	radeon_debug = 1;
    194 #define	DPRINTF(x)	\
    195 	if (radeon_debug) printf x
    196 #define	PRINTREG(r)	DPRINTF((#r " = %08x\n", GET32(sc, r)))
    197 #define	PRINTPLL(r)	DPRINTF((#r " = %08x\n", GETPLL(sc, r)))
    198 #else
    199 #define	DPRINTF(x)
    200 #define	PRINTREG(r)
    201 #define	PRINTPLL(r)
    202 #endif
    203 
    204 #define	ROUNDUP(x,y)	(((x) + ((y) - 1)) & ~((y) - 1))
    205 
    206 #ifndef	RADEON_DEFAULT_MODE
    207 /* any reasonably modern display should handle this */
    208 #define	RADEON_DEFAULT_MODE	"1024x768x60"
    209 #endif
    210 
    211 extern const u_char rasops_cmap[768];
    212 
    213 const char	*radeonfb_default_mode = RADEON_DEFAULT_MODE;
    214 
    215 static struct {
    216 	int		size;		/* minimum memory size (MB) */
    217 	int		maxx;		/* maximum x dimension */
    218 	int		maxy;		/* maximum y dimension */
    219 	int		maxbpp;		/* maximum bpp */
    220 	int		maxdisp;	/* maximum logical display count */
    221 } radeonfb_limits[] = {
    222 	{ 32,	2048, 1536, 32, 2 },
    223 	{ 16,	1600, 1200, 32, 2 },
    224 	{ 8,	1600, 1200, 32, 1 },
    225 	{ 0,	0, 0, 0, 0 },
    226 };
    227 
    228 static struct wsscreen_descr radeonfb_stdscreen = {
    229 	"fb",		/* name */
    230 	0, 0,		/* ncols, nrows */
    231 	NULL,		/* textops */
    232 	8, 16,		/* fontwidth, fontheight */
    233 	WSSCREEN_WSCOLORS | WSSCREEN_UNDERLINE, /* capabilities */
    234 	0,		/* modecookie */
    235 };
    236 
    237 struct wsdisplay_accessops radeonfb_accessops = {
    238 	radeonfb_ioctl,
    239 	radeonfb_mmap,
    240 	NULL,		/* vcons_alloc_screen */
    241 	NULL,		/* vcons_free_screen */
    242 	NULL,		/* vcons_show_screen */
    243 	NULL,		/* load_font */
    244 	NULL,		/* pollc */
    245 	NULL,		/* scroll */
    246 };
    247 
    248 static struct {
    249 	uint16_t	devid;
    250 	uint16_t	family;
    251 	uint16_t	flags;
    252 } radeonfb_devices[] =
    253 {
    254 	/* R100 family */
    255 	{ PCI_PRODUCT_ATI_RADEON_R100_QD,	RADEON_R100, 0 },
    256 	{ PCI_PRODUCT_ATI_RADEON_R100_QE,	RADEON_R100, 0 },
    257 	{ PCI_PRODUCT_ATI_RADEON_R100_QF,	RADEON_R100, 0 },
    258 	{ PCI_PRODUCT_ATI_RADEON_R100_QG,	RADEON_R100, 0 },
    259 
    260 	/* RV100 family */
    261 	{ PCI_PRODUCT_ATI_RADEON_RV100_LY,	RADEON_RV100, RFB_MOB },
    262 	{ PCI_PRODUCT_ATI_RADEON_RV100_LZ,	RADEON_RV100, RFB_MOB },
    263 	{ PCI_PRODUCT_ATI_RADEON_RV100_QY,	RADEON_RV100, 0 },
    264 	{ PCI_PRODUCT_ATI_RADEON_RV100_QZ,	RADEON_RV100, 0 },
    265 
    266 	/* RS100 family */
    267 	{ PCI_PRODUCT_ATI_RADEON_RS100_4136,	RADEON_RS100, 0 },
    268 	{ PCI_PRODUCT_ATI_RADEON_RS100_4336,	RADEON_RS100, RFB_MOB },
    269 
    270 	/* RS200/RS250 family */
    271 	{ PCI_PRODUCT_ATI_RADEON_RS200_4337,	RADEON_RS200, RFB_MOB },
    272 	{ PCI_PRODUCT_ATI_RADEON_RS200_A7,	RADEON_RS200, 0 },
    273 	{ PCI_PRODUCT_ATI_RADEON_RS250_B7,	RADEON_RS200, RFB_MOB },
    274 	{ PCI_PRODUCT_ATI_RADEON_RS250_D7,	RADEON_RS200, 0 },
    275 
    276 	/* R200 family */
    277 	/* add more R200 products? , 5148 */
    278 	{ PCI_PRODUCT_ATI_RADEON_R200_BB,	RADEON_R200, 0 },
    279 	{ PCI_PRODUCT_ATI_RADEON_R200_BC,	RADEON_R200, 0 },
    280 	{ PCI_PRODUCT_ATI_RADEON_R200_QH,	RADEON_R200, 0 },
    281 	{ PCI_PRODUCT_ATI_RADEON_R200_QL,	RADEON_R200, 0 },
    282 	{ PCI_PRODUCT_ATI_RADEON_R200_QM,	RADEON_R200, 0 },
    283 
    284 	/* RV200 family */
    285 	{ PCI_PRODUCT_ATI_RADEON_RV200_LW,	RADEON_RV200, RFB_MOB },
    286 	{ PCI_PRODUCT_ATI_RADEON_RV200_LX,	RADEON_RV200, RFB_MOB },
    287 	{ PCI_PRODUCT_ATI_RADEON_RV200_QW,	RADEON_RV200, 0 },
    288 	{ PCI_PRODUCT_ATI_RADEON_RV200_QX,	RADEON_RV200, 0 },
    289 
    290 	/* RV250 family */
    291 	{ PCI_PRODUCT_ATI_RADEON_RV250_4966,	RADEON_RV250, 0 },
    292 	{ PCI_PRODUCT_ATI_RADEON_RV250_4967,	RADEON_RV250, 0 },
    293 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C64,	RADEON_RV250, RFB_MOB },
    294 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C66,	RADEON_RV250, RFB_MOB },
    295 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C67,	RADEON_RV250, RFB_MOB },
    296 
    297 	/* RS300 family */
    298 	{ PCI_PRODUCT_ATI_RADEON_RS300_X5,	RADEON_RS300, 0 },
    299 	{ PCI_PRODUCT_ATI_RADEON_RS300_X4,	RADEON_RS300, 0 },
    300 	{ PCI_PRODUCT_ATI_RADEON_RS300_7834,	RADEON_RS300, 0 },
    301 	{ PCI_PRODUCT_ATI_RADEON_RS300_7835,	RADEON_RS300, RFB_MOB },
    302 
    303 	/* RV280 family */
    304 	{ PCI_PRODUCT_ATI_RADEON_RV280_5960,	RADEON_RV280, 0 },
    305 	{ PCI_PRODUCT_ATI_RADEON_RV280_5961,	RADEON_RV280, 0 },
    306 	{ PCI_PRODUCT_ATI_RADEON_RV280_5962,	RADEON_RV280, 0 },
    307 	{ PCI_PRODUCT_ATI_RADEON_RV280_5963,	RADEON_RV280, 0 },
    308 	{ PCI_PRODUCT_ATI_RADEON_RV280_5964,	RADEON_RV280, 0 },
    309 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C61,	RADEON_RV280, RFB_MOB },
    310 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C63,	RADEON_RV280, RFB_MOB },
    311 
    312 	/* R300 family */
    313 	{ PCI_PRODUCT_ATI_RADEON_R300_AD,	RADEON_R300, 0 },
    314 	{ PCI_PRODUCT_ATI_RADEON_R300_AE,	RADEON_R300, 0 },
    315 	{ PCI_PRODUCT_ATI_RADEON_R300_AF,	RADEON_R300, 0 },
    316 	{ PCI_PRODUCT_ATI_RADEON_R300_AG,	RADEON_R300, 0 },
    317 	{ PCI_PRODUCT_ATI_RADEON_R300_ND,	RADEON_R300, 0 },
    318 	{ PCI_PRODUCT_ATI_RADEON_R300_NE,	RADEON_R300, 0 },
    319 	{ PCI_PRODUCT_ATI_RADEON_R300_NF,	RADEON_R300, 0 },
    320 	{ PCI_PRODUCT_ATI_RADEON_R300_NG,	RADEON_R300, 0 },
    321 
    322 	/* RV350/RV360 family */
    323 	{ PCI_PRODUCT_ATI_RADEON_RV350_AP,	RADEON_RV350, 0 },
    324 	{ PCI_PRODUCT_ATI_RADEON_RV350_AQ,	RADEON_RV350, 0 },
    325 	{ PCI_PRODUCT_ATI_RADEON_RV360_AR,	RADEON_RV350, 0 },
    326 	{ PCI_PRODUCT_ATI_RADEON_RV350_AS,	RADEON_RV350, 0 },
    327 	{ PCI_PRODUCT_ATI_RADEON_RV350_AT,	RADEON_RV350, 0 },
    328 	{ PCI_PRODUCT_ATI_RADEON_RV350_AV,	RADEON_RV350, 0 },
    329 	{ PCI_PRODUCT_ATI_RADEON_RV350_NP,	RADEON_RV350, RFB_MOB },
    330 	{ PCI_PRODUCT_ATI_RADEON_RV350_NQ,	RADEON_RV350, RFB_MOB },
    331 	{ PCI_PRODUCT_ATI_RADEON_RV350_NR,	RADEON_RV350, RFB_MOB },
    332 	{ PCI_PRODUCT_ATI_RADEON_RV350_NS,	RADEON_RV350, RFB_MOB },
    333 	{ PCI_PRODUCT_ATI_RADEON_RV350_NT,	RADEON_RV350, RFB_MOB },
    334 	{ PCI_PRODUCT_ATI_RADEON_RV350_NV,	RADEON_RV350, RFB_MOB },
    335 
    336 	/* R350/R360 family */
    337 	{ PCI_PRODUCT_ATI_RADEON_R350_AH,	RADEON_R350, 0 },
    338 	{ PCI_PRODUCT_ATI_RADEON_R350_AI,	RADEON_R350, 0 },
    339 	{ PCI_PRODUCT_ATI_RADEON_R350_AJ,	RADEON_R350, 0 },
    340 	{ PCI_PRODUCT_ATI_RADEON_R350_AK,	RADEON_R350, 0 },
    341 	{ PCI_PRODUCT_ATI_RADEON_R350_NH,	RADEON_R350, 0 },
    342 	{ PCI_PRODUCT_ATI_RADEON_R350_NI,	RADEON_R350, 0 },
    343 	{ PCI_PRODUCT_ATI_RADEON_R350_NK,	RADEON_R350, 0 },
    344 	{ PCI_PRODUCT_ATI_RADEON_R360_NJ,	RADEON_R350, 0 },
    345 
    346 	/* RV380/RV370 family */
    347 	{ PCI_PRODUCT_ATI_RADEON_RV380_3150,	RADEON_RV380, RFB_MOB },
    348 	{ PCI_PRODUCT_ATI_RADEON_RV380_3154,	RADEON_RV380, RFB_MOB },
    349 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E50,	RADEON_RV380, 0 },
    350 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E54,	RADEON_RV380, 0 },
    351 	{ PCI_PRODUCT_ATI_RADEON_RV370_5460,	RADEON_RV380, RFB_MOB },
    352 	{ PCI_PRODUCT_ATI_RADEON_RV370_5464,	RADEON_RV380, RFB_MOB },
    353 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B60,	RADEON_RV380, 0 },
    354 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B64,	RADEON_RV380, 0 },
    355 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B65,	RADEON_RV380, 0 },
    356 
    357 	/* R420/R423 family */
    358 	{ PCI_PRODUCT_ATI_RADEON_R420_JH,	RADEON_R420, 0 },
    359 	{ PCI_PRODUCT_ATI_RADEON_R420_JI,	RADEON_R420, 0 },
    360 	{ PCI_PRODUCT_ATI_RADEON_R420_JJ,	RADEON_R420, 0 },
    361 	{ PCI_PRODUCT_ATI_RADEON_R420_JK,	RADEON_R420, 0 },
    362 	{ PCI_PRODUCT_ATI_RADEON_R420_JL,	RADEON_R420, 0 },
    363 	{ PCI_PRODUCT_ATI_RADEON_R420_JM,	RADEON_R420, 0 },
    364 	{ PCI_PRODUCT_ATI_RADEON_R420_JN,	RADEON_R420, RFB_MOB },
    365 	{ PCI_PRODUCT_ATI_RADEON_R420_JP,	RADEON_R420, 0 },
    366 	{ PCI_PRODUCT_ATI_RADEON_R423_UH,	RADEON_R420, 0 },
    367 	{ PCI_PRODUCT_ATI_RADEON_R423_UI,	RADEON_R420, 0 },
    368 	{ PCI_PRODUCT_ATI_RADEON_R423_UJ,	RADEON_R420, 0 },
    369 	{ PCI_PRODUCT_ATI_RADEON_R423_UK,	RADEON_R420, 0 },
    370 	{ PCI_PRODUCT_ATI_RADEON_R423_UQ,	RADEON_R420, 0 },
    371 	{ PCI_PRODUCT_ATI_RADEON_R423_UR,	RADEON_R420, 0 },
    372 	{ PCI_PRODUCT_ATI_RADEON_R423_UT,	RADEON_R420, 0 },
    373 	{ PCI_PRODUCT_ATI_RADEON_R423_5D57,	RADEON_R420, 0 },
    374 	{ PCI_PRODUCT_ATI_RADEON_R430_554F,	RADEON_R420, 0 },
    375 
    376 	{ 0, 0, 0 }
    377 };
    378 
    379 static struct {
    380 	int divider;
    381 	int mask;
    382 } radeonfb_dividers[] = {
    383 	{ 16, 5 },
    384 	{ 12, 7 },
    385 	{  8, 3 },
    386 	{  6, 6 },
    387 	{  4, 2 },
    388 	{  3, 4 },
    389 	{  2, 1 },
    390 	{  1, 0 },
    391 	{  0, 0 }
    392 };
    393 
    394 /*
    395  * This table taken from X11.
    396  */
    397 static const struct {
    398 	int			family;
    399 	struct radeon_tmds_pll	plls[4];
    400 } radeonfb_tmds_pll[] = {
    401 	{ RADEON_R100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    402 	{ RADEON_RV100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    403 	{ RADEON_RS100, {{0, 0}}},
    404 	{ RADEON_RV200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    405 	{ RADEON_RS200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    406 	{ RADEON_R200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    407 	{ RADEON_RV250,	{{15500, 0x81b}, {-1, 0x83f}}},
    408 	{ RADEON_RS300, {{0, 0}}},
    409 	{ RADEON_RV280,	{{13000, 0x400f4}, {15000, 0x400f7}}},
    410 	{ RADEON_R300,	{{-1, 0xb01cb}}},
    411 	{ RADEON_R350,	{{-1, 0xb01cb}}},
    412 	{ RADEON_RV350,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    413 	{ RADEON_RV380,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    414 	{ RADEON_R420,	{{-1, 0xb01cb}}},
    415 };
    416 
    417 #define RADEONFB_BACKLIGHT_MAX    255  /* Maximum backlight level. */
    418 
    419 
    420 CFATTACH_DECL_NEW(radeonfb, sizeof (struct radeonfb_softc),
    421     radeonfb_match, radeonfb_attach, NULL, NULL);
    422 
    423 static int
    424 radeonfb_match(device_t parent, cfdata_t match, void *aux)
    425 {
    426 	const struct pci_attach_args	*pa = aux;
    427 	int			i;
    428 
    429 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_ATI)
    430 		return 0;
    431 
    432 	for (i = 0; radeonfb_devices[i].devid; i++) {
    433 		if (PCI_PRODUCT(pa->pa_id) == radeonfb_devices[i].devid)
    434 			return 100;	/* high to defeat VGA/VESA */
    435 	}
    436 
    437 	return 0;
    438 }
    439 
    440 static void
    441 radeonfb_attach(device_t parent, device_t dev, void *aux)
    442 {
    443 	struct radeonfb_softc	*sc = device_private(dev);
    444 	const struct pci_attach_args	*pa = aux;
    445 	const char		*mptr;
    446 	bus_size_t		bsz;
    447 	pcireg_t		screg;
    448 	int			i, j, fg, bg, ul, flags;
    449 	uint32_t		v;
    450 
    451 	sc->sc_dev = dev;
    452 	sc->sc_id = pa->pa_id;
    453 	for (i = 0; radeonfb_devices[i].devid; i++) {
    454 		if (PCI_PRODUCT(sc->sc_id) == radeonfb_devices[i].devid)
    455 			break;
    456 	}
    457 
    458 	pci_aprint_devinfo(pa, NULL);
    459 
    460 	DPRINTF((prop_dictionary_externalize(device_properties(dev))));
    461 
    462 	KASSERT(radeonfb_devices[i].devid != 0);
    463 	sc->sc_pt = pa->pa_tag;
    464 	sc->sc_iot = pa->pa_iot;
    465 	sc->sc_pc = pa->pa_pc;
    466 	sc->sc_family = radeonfb_devices[i].family;
    467 	sc->sc_flags = radeonfb_devices[i].flags;
    468 
    469 	/* enable memory and IO access */
    470 	screg = pci_conf_read(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG);
    471 	screg |= PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE;
    472 	pci_conf_write(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG, screg);
    473 
    474 	/*
    475 	 * Some flags are general to entire chip families, and rather
    476 	 * than clutter up the table with them, we go ahead and set
    477 	 * them here.
    478 	 */
    479 	switch (sc->sc_family) {
    480 	case RADEON_RS100:
    481 	case RADEON_RS200:
    482 		sc->sc_flags |= RFB_IGP | RFB_RV100;
    483 		break;
    484 
    485 	case RADEON_RV100:
    486 	case RADEON_RV200:
    487 	case RADEON_RV250:
    488 	case RADEON_RV280:
    489 		sc->sc_flags |= RFB_RV100;
    490 		break;
    491 
    492 	case RADEON_RS300:
    493 		sc->sc_flags |= RFB_SDAC | RFB_IGP | RFB_RV100;
    494 		break;
    495 
    496 	case RADEON_R300:
    497 	case RADEON_RV350:
    498 	case RADEON_R350:
    499 	case RADEON_RV380:
    500 	case RADEON_R420:
    501 		/* newer chips */
    502 		sc->sc_flags |= RFB_R300;
    503 		break;
    504 
    505 	case RADEON_R100:
    506 		sc->sc_flags |= RFB_NCRTC2;
    507 		break;
    508 	}
    509 
    510 	if ((sc->sc_family == RADEON_RV200) ||
    511 	    (sc->sc_family == RADEON_RV250) ||
    512 	    (sc->sc_family == RADEON_RV280) ||
    513 	    (sc->sc_family == RADEON_RV350)) {
    514 		bool inverted = 0;
    515 		/* backlight level is linear */
    516 		DPRINTF(("found RV* chip, backlight is supposedly linear\n"));
    517 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
    518 		    "backlight_level_reverted", &inverted);
    519 		if (inverted) {
    520 			DPRINTF(("nope, it's inverted\n"));
    521 			sc->sc_flags |= RFB_INV_BLIGHT;
    522 		}
    523 	} else
    524 		sc->sc_flags |= RFB_INV_BLIGHT;
    525 
    526 	/*
    527 	 * XXX: to support true multihead, this must change.
    528 	 */
    529 	sc->sc_ndisplays = 1;
    530 
    531 	/* XXX: */
    532 	if (!HAS_CRTC2(sc)) {
    533 		sc->sc_ndisplays = 1;
    534 	}
    535 
    536 	if (pci_mapreg_map(pa, RADEON_MAPREG_MMIO, PCI_MAPREG_TYPE_MEM,	0,
    537 		&sc->sc_regt, &sc->sc_regh, &sc->sc_regaddr,
    538 		&sc->sc_regsz) != 0) {
    539 		aprint_error("%s: unable to map registers!\n", XNAME(sc));
    540 		goto error;
    541 	}
    542 
    543 	if (pci_mapreg_info(sc->sc_pc, sc->sc_pt, PCI_MAPREG_ROM,
    544 	     PCI_MAPREG_TYPE_ROM, &sc->sc_romaddr, &sc->sc_romsz, &flags) != 0)
    545 	{
    546 		aprint_error("%s: unable to find ROM!\n", XNAME(sc));
    547 		goto error;
    548 	}
    549 	sc->sc_romt = sc->sc_memt;
    550 
    551 	sc->sc_mapped = TRUE;
    552 
    553 	/* scratch register test... */
    554 	if (radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0x55555555) ||
    555 	    radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0xaaaaaaaa)) {
    556 		aprint_error("%s: scratch register test failed!\n", XNAME(sc));
    557 		goto error;
    558 	}
    559 
    560 	PRINTREG(RADEON_CRTC_EXT_CNTL);
    561 	PRINTREG(RADEON_CRTC_GEN_CNTL);
    562 	PRINTREG(RADEON_CRTC2_GEN_CNTL);
    563 	PRINTREG(RADEON_DISP_OUTPUT_CNTL);
    564 	PRINTREG(RADEON_DAC_CNTL2);
    565 	PRINTREG(RADEON_FP_GEN_CNTL);
    566 	PRINTREG(RADEON_FP2_GEN_CNTL);
    567 
    568 	PRINTREG(RADEON_BIOS_4_SCRATCH);
    569 	PRINTREG(RADEON_FP_GEN_CNTL);
    570 	sc->sc_fp_gen_cntl = GET32(sc, RADEON_FP_GEN_CNTL);
    571 	PRINTREG(RADEON_FP2_GEN_CNTL);
    572 	PRINTREG(RADEON_TMDS_CNTL);
    573 	PRINTREG(RADEON_TMDS_TRANSMITTER_CNTL);
    574 	PRINTREG(RADEON_TMDS_PLL_CNTL);
    575 	PRINTREG(RADEON_LVDS_GEN_CNTL);
    576 	PRINTREG(RADEON_FP_HORZ_STRETCH);
    577 	PRINTREG(RADEON_FP_VERT_STRETCH);
    578 
    579 	if (IS_RV100(sc))
    580 		PUT32(sc, RADEON_TMDS_PLL_CNTL, 0xa27);
    581 
    582 	/* XXX
    583 	 * according to xf86-video-radeon R3xx has this bit backwards
    584 	 */
    585 	if (IS_R300(sc)) {
    586 		PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    587 		    0,
    588 		    ~(RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST));
    589 	} else {
    590 		PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    591 		    RADEON_TMDS_TRANSMITTER_PLLEN,
    592 		    ~(RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST));
    593 	}
    594 
    595 	radeonfb_i2c_init(sc);
    596 
    597 	radeonfb_loadbios(sc, pa);
    598 
    599 #ifdef	RADEONFB_BIOS_INIT
    600 	if (radeonfb_bios_init(sc)) {
    601 		aprint_error("%s: BIOS inititialization failed\n", XNAME(sc));
    602 	}
    603 #endif
    604 
    605 	if (radeonfb_getclocks(sc)) {
    606 		aprint_error("%s: Unable to get reference clocks from BIOS\n",
    607 		    XNAME(sc));
    608 		goto error;
    609 	}
    610 
    611 	if (radeonfb_gettmds(sc)) {
    612 		aprint_error("%s: Unable to identify TMDS PLL settings\n",
    613 		    XNAME(sc));
    614 		goto error;
    615 	}
    616 
    617 	aprint_verbose("%s: refclk = %d.%03d MHz, refdiv = %d "
    618 	    "minpll = %d, maxpll = %d\n", XNAME(sc),
    619 	    (int)sc->sc_refclk / 1000, (int)sc->sc_refclk % 1000,
    620 	    (int)sc->sc_refdiv, (int)sc->sc_minpll, (int)sc->sc_maxpll);
    621 
    622 	radeonfb_getconnectors(sc);
    623 
    624 	radeonfb_set_fbloc(sc);
    625 
    626 	for (i = 0; radeonfb_limits[i].size; i++) {
    627 		if (sc->sc_memsz >= radeonfb_limits[i].size) {
    628 			sc->sc_maxx = radeonfb_limits[i].maxx;
    629 			sc->sc_maxy = radeonfb_limits[i].maxy;
    630 			sc->sc_maxbpp = radeonfb_limits[i].maxbpp;
    631 			/* framebuffer offset, start at a 4K page */
    632 			sc->sc_fboffset = sc->sc_memsz /
    633 			    radeonfb_limits[i].maxdisp;
    634 			/*
    635 			 * we use the fbsize to figure out where we can store
    636 			 * things like cursor data.
    637 			 */
    638 			sc->sc_fbsize =
    639 			    ROUNDUP(ROUNDUP(sc->sc_maxx * sc->sc_maxbpp / 8 ,
    640 					RADEON_STRIDEALIGN) * sc->sc_maxy,
    641 				4096);
    642 			break;
    643 		}
    644 	}
    645 
    646 
    647 	radeonfb_init_misc(sc);
    648 
    649 	/* program the DAC wirings */
    650 	for (i = 0; i < (HAS_CRTC2(sc) ? 2 : 1); i++) {
    651 		switch (sc->sc_ports[i].rp_dac_type) {
    652 		case RADEON_DAC_PRIMARY:
    653 			PATCH32(sc, RADEON_DAC_CNTL2,
    654 			    i ? RADEON_DAC2_DAC_CLK_SEL : 0,
    655 			    ~RADEON_DAC2_DAC_CLK_SEL);
    656 			break;
    657 		case RADEON_DAC_TVDAC:
    658 			/* we always use the TVDAC to drive a secondary analog
    659 			 * CRT for now.  if we ever support TV-out this will
    660 			 * have to change.
    661 			 */
    662 			SET32(sc, RADEON_DAC_CNTL2,
    663 			    RADEON_DAC2_DAC2_CLK_SEL);
    664 			PATCH32(sc, RADEON_DISP_HW_DEBUG,
    665 			    i ? 0 : RADEON_CRT2_DISP1_SEL,
    666 			    ~RADEON_CRT2_DISP1_SEL);
    667 			/* we're using CRTC2 for the 2nd port */
    668 			if (sc->sc_ports[i].rp_number == 1) {
    669 				PATCH32(sc, RADEON_DISP_OUTPUT_CNTL,
    670 				    RADEON_DISP_DAC2_SOURCE_CRTC2,
    671 				    ~RADEON_DISP_DAC2_SOURCE_MASK);
    672 			}
    673 
    674 			break;
    675 		}
    676 		DPRINTF(("%s: port %d tmds type %d\n", __func__, i,
    677 		    sc->sc_ports[i].rp_tmds_type));
    678 		switch (sc->sc_ports[i].rp_tmds_type) {
    679 		case RADEON_TMDS_INT:
    680 			/* point FP0 at the CRTC this port uses */
    681 			DPRINTF(("%s: plugging internal TMDS into CRTC %d\n",
    682 			    __func__, sc->sc_ports[i].rp_number));
    683 			if (IS_R300(sc)) {
    684 				PATCH32(sc, RADEON_FP_GEN_CNTL,
    685 				    sc->sc_ports[i].rp_number ?
    686 				      R200_FP_SOURCE_SEL_CRTC2 :
    687 				      R200_FP_SOURCE_SEL_CRTC1,
    688 				    ~R200_FP_SOURCE_SEL_MASK);
    689 			} else {
    690 				PATCH32(sc, RADEON_FP_GEN_CNTL,
    691 				    sc->sc_ports[i].rp_number ?
    692 				      RADEON_FP_SEL_CRTC2 :
    693 				      RADEON_FP_SEL_CRTC1,
    694 				    ~RADEON_FP_SEL_MASK);
    695 			}
    696 		}
    697 	}
    698 	PRINTREG(RADEON_DAC_CNTL2);
    699 	PRINTREG(RADEON_DISP_HW_DEBUG);
    700 
    701 	/* other DAC programming */
    702 	v = GET32(sc, RADEON_DAC_CNTL);
    703 	v &= (RADEON_DAC_RANGE_CNTL_MASK | RADEON_DAC_BLANKING);
    704 	v |= RADEON_DAC_MASK_ALL | RADEON_DAC_8BIT_EN;
    705 	PUT32(sc, RADEON_DAC_CNTL, v);
    706 	PRINTREG(RADEON_DAC_CNTL);
    707 
    708 	/* XXX: this may need more investigation */
    709 	PUT32(sc, RADEON_TV_DAC_CNTL, 0x00280203);
    710 	PRINTREG(RADEON_TV_DAC_CNTL);
    711 
    712 	/* enable TMDS */
    713 	SET32(sc, RADEON_FP_GEN_CNTL,
    714 	    RADEON_FP_TMDS_EN |
    715 		RADEON_FP_CRTC_DONT_SHADOW_VPAR |
    716 		RADEON_FP_CRTC_DONT_SHADOW_HEND);
    717 	/*
    718 	 * XXX
    719 	 * no idea why this is necessary - if I do not clear this bit on my
    720 	 * iBook G4 the screen remains black, even though it's already clear.
    721 	 * It needs to be set on my Sun XVR-100 for the DVI port to work
    722 	 * TODO:
    723 	 * see if this is still necessary now that CRTCs, DACs and outputs are
    724 	 * getting wired up in a halfway sane way
    725 	 */
    726 	if (sc->sc_fp_gen_cntl & RADEON_FP_SEL_CRTC2) {
    727 		SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    728 	} else {
    729 		CLR32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    730 	}
    731 
    732 	/*
    733 	 * we use bus_space_map instead of pci_mapreg, because we don't
    734 	 * need the full aperature space.  no point in wasting virtual
    735 	 * address space we don't intend to use, right?
    736 	 */
    737 	if ((sc->sc_memsz < (4096 * 1024)) ||
    738 	    (pci_mapreg_info(sc->sc_pc, sc->sc_pt, RADEON_MAPREG_VRAM,
    739 		PCI_MAPREG_TYPE_MEM, &sc->sc_memaddr, &bsz, NULL) != 0) ||
    740 	    (bsz < sc->sc_memsz)) {
    741 		sc->sc_memsz = 0;
    742 		aprint_error("%s: Bad frame buffer configuration\n",
    743 		    XNAME(sc));
    744 		goto error;
    745 	}
    746 
    747 	/* 64 MB should be enough -- more just wastes map entries */
    748 	if (sc->sc_memsz > (64 << 20))
    749 		sc->sc_memsz = (64 << 20);
    750 
    751 	sc->sc_memt = pa->pa_memt;
    752 	if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
    753 		BUS_SPACE_MAP_LINEAR, &sc->sc_memh) != 0) {
    754 		sc->sc_memsz = 0;
    755 		aprint_error("%s: Unable to map frame buffer\n", XNAME(sc));
    756 		goto error;
    757 	}
    758 
    759 	aprint_normal("%s: %d MB aperture at 0x%08x, "
    760 	    "%d KB registers at 0x%08x\n", XNAME(sc),
    761 	    (int)sc->sc_memsz >> 20, (unsigned)sc->sc_memaddr,
    762 	    (int)sc->sc_regsz >> 10, (unsigned)sc->sc_regaddr);
    763 
    764 	/* setup default video mode from devprop (allows PROM override) */
    765 	sc->sc_defaultmode = radeonfb_default_mode;
    766 	if (prop_dictionary_get_cstring_nocopy(device_properties(sc->sc_dev),
    767 	    "videomode", &mptr)) {
    768 
    769 		strncpy(sc->sc_modebuf, mptr, sizeof(sc->sc_modebuf));
    770 		sc->sc_defaultmode = sc->sc_modebuf;
    771 	}
    772 
    773 	/* initialize some basic display parameters */
    774 	for (i = 0; i < sc->sc_ndisplays; i++) {
    775 		struct radeonfb_display *dp = &sc->sc_displays[i];
    776 		struct rasops_info *ri;
    777 		long defattr;
    778 		struct wsemuldisplaydev_attach_args aa;
    779 
    780 		/*
    781 		 * Figure out how many "displays" (desktops) we are going to
    782 		 * support.  If more than one, then each CRTC gets its own
    783 		 * programming.
    784 		 *
    785 		 * XXX: this code needs to change to support mergedfb.
    786 		 * XXX: would be nice to allow this to be overridden
    787 		 */
    788 		if (HAS_CRTC2(sc) && (sc->sc_ndisplays == 1)) {
    789 			DPRINTF(("dual crtcs!\n"));
    790 			dp->rd_ncrtcs = 2;
    791 			dp->rd_crtcs[0].rc_port =
    792 			    &sc->sc_ports[0];
    793 			dp->rd_crtcs[0].rc_number = sc->sc_ports[0].rp_number;
    794 			dp->rd_crtcs[1].rc_port =
    795 			    &sc->sc_ports[1];
    796 			dp->rd_crtcs[1].rc_number = sc->sc_ports[1].rp_number;
    797 		} else {
    798 			dp->rd_ncrtcs = 1;
    799 			dp->rd_crtcs[0].rc_port =
    800 			    &sc->sc_ports[i];
    801 			dp->rd_crtcs[0].rc_number = sc->sc_ports[i].rp_number;
    802 		}
    803 
    804 		dp->rd_softc = sc;
    805 		dp->rd_wsmode = WSDISPLAYIO_MODE_EMUL;
    806 		dp->rd_bg = WS_DEFAULT_BG;
    807 		dp->rd_bpp = RADEONFB_DEFAULT_DEPTH;	/* XXX */
    808 
    809 		/* for text mode, we pick a resolution that won't
    810 		 * require panning */
    811 		radeonfb_pickres(dp, &dp->rd_virtx, &dp->rd_virty, 0);
    812 
    813 		aprint_normal("%s: display %d: "
    814 		    "initial virtual resolution %dx%d at %d bpp\n",
    815 		    XNAME(sc), i, dp->rd_virtx, dp->rd_virty, dp->rd_bpp);
    816 
    817 		/* now select the *video mode* that we will use */
    818 		for (j = 0; j < dp->rd_ncrtcs; j++) {
    819 			const struct videomode *vmp;
    820 			vmp = radeonfb_port_mode(sc, dp->rd_crtcs[j].rc_port,
    821 			    dp->rd_virtx, dp->rd_virty);
    822 
    823 			/*
    824 			 * virtual resolution should be at least as high as
    825 			 * physical
    826 			 */
    827 			if (dp->rd_virtx < vmp->hdisplay ||
    828 			    dp->rd_virty < vmp->vdisplay) {
    829 				dp->rd_virtx = vmp->hdisplay;
    830 				dp->rd_virty = vmp->vdisplay;
    831 			}
    832 
    833 			dp->rd_crtcs[j].rc_videomode = *vmp;
    834 			printf("%s: port %d: physical %dx%d %dHz\n",
    835 			    XNAME(sc), j, vmp->hdisplay, vmp->vdisplay,
    836 			    DIVIDE(DIVIDE(vmp->dot_clock * 1000,
    837 				       vmp->htotal), vmp->vtotal));
    838 		}
    839 
    840 		/* N.B.: radeon wants 64-byte aligned stride */
    841 		dp->rd_stride = dp->rd_virtx * dp->rd_bpp / 8;
    842 		dp->rd_stride = ROUNDUP(dp->rd_stride, RADEON_STRIDEALIGN);
    843 		DPRINTF(("stride: %d\n", dp->rd_stride));
    844 
    845 		dp->rd_offset = sc->sc_fboffset * i;
    846 		dp->rd_fbptr = (vaddr_t)bus_space_vaddr(sc->sc_memt,
    847 		    sc->sc_memh) + dp->rd_offset;
    848 		dp->rd_curoff = sc->sc_fbsize;
    849 		dp->rd_curptr = dp->rd_fbptr + dp->rd_curoff;
    850 
    851 		DPRINTF(("fpbtr = %p\n", (void *)dp->rd_fbptr));
    852 
    853 		switch (dp->rd_bpp) {
    854 		case 8:
    855 			dp->rd_format = 2;
    856 			break;
    857 		case 32:
    858 			dp->rd_format = 6;
    859 			break;
    860 		default:
    861 			aprint_error("%s: bad depth %d\n", XNAME(sc),
    862 			    dp->rd_bpp);
    863 			goto error;
    864 		}
    865 
    866 		DPRINTF(("init engine\n"));
    867 		/* XXX: this seems suspicious - per display engine
    868 		   initialization? */
    869 		radeonfb_engine_init(dp);
    870 
    871 		/* copy the template into place */
    872 		dp->rd_wsscreens_storage[0] = radeonfb_stdscreen;
    873 		dp->rd_wsscreens = dp->rd_wsscreens_storage;
    874 
    875 		/* and make up the list */
    876 		dp->rd_wsscreenlist.nscreens = 1;
    877 		dp->rd_wsscreenlist.screens = (void *)&dp->rd_wsscreens;
    878 
    879 		vcons_init(&dp->rd_vd, dp, dp->rd_wsscreens,
    880 		    &radeonfb_accessops);
    881 
    882 		dp->rd_vd.init_screen = radeonfb_init_screen;
    883 
    884 #ifdef RADEONFB_DEBUG
    885 		dp->rd_virty -= 200;
    886 #endif
    887 
    888 		dp->rd_console = 0;
    889 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
    890 		    "is_console", &dp->rd_console);
    891 
    892 		dp->rd_vscreen.scr_flags |= VCONS_SCREEN_IS_STATIC;
    893 
    894 
    895 		vcons_init_screen(&dp->rd_vd, &dp->rd_vscreen,
    896 		    dp->rd_console, &defattr);
    897 
    898 		ri = &dp->rd_vscreen.scr_ri;
    899 
    900 		/* clear the screen */
    901 		rasops_unpack_attr(defattr, &fg, &bg, &ul);
    902 		radeonfb_rectfill(dp, 0, 0, ri->ri_width, ri->ri_height,
    903 		    ri->ri_devcmap[bg & 0xf]);
    904 
    905 		dp->rd_wsscreens->textops = &ri->ri_ops;
    906 		dp->rd_wsscreens->capabilities = ri->ri_caps;
    907 		dp->rd_wsscreens->nrows = ri->ri_rows;
    908 		dp->rd_wsscreens->ncols = ri->ri_cols;
    909 
    910 #ifdef SPLASHSCREEN
    911 		dp->rd_splash.si_depth = ri->ri_depth;
    912 		dp->rd_splash.si_bits = ri->ri_bits;
    913 		dp->rd_splash.si_hwbits = ri->ri_hwbits;
    914 		dp->rd_splash.si_width = ri->ri_width;
    915 		dp->rd_splash.si_height = ri->ri_height;
    916 		dp->rd_splash.si_stride = ri->ri_stride;
    917 		dp->rd_splash.si_fillrect = NULL;
    918 #endif
    919 		dp->rd_gc.gc_bitblt = radeonfb_bitblt;
    920 		dp->rd_gc.gc_rectfill = radeonfb_rectfill_a;
    921 		dp->rd_gc.gc_rop = RADEON_ROP3_S;
    922 		dp->rd_gc.gc_blitcookie = dp;
    923 		glyphcache_init(&dp->rd_gc, dp->rd_virty + 4,
    924 		    (0x800000 / dp->rd_stride) - (dp->rd_virty + 4),
    925 		    dp->rd_virtx,
    926 		    ri->ri_font->fontwidth,
    927 		    ri->ri_font->fontheight,
    928 		    defattr);
    929 		if (dp->rd_console) {
    930 
    931 			radeonfb_modeswitch(dp);
    932 			wsdisplay_cnattach(dp->rd_wsscreens, ri, 0, 0,
    933 			    defattr);
    934 #ifdef SPLASHSCREEN
    935 			if (splash_render(&dp->rd_splash,
    936 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
    937 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    938 			else
    939 #endif
    940 				vcons_replay_msgbuf(&dp->rd_vscreen);
    941 		} else {
    942 
    943 			/*
    944 			 * since we're not the console we can postpone
    945 			 * the rest until someone actually allocates a
    946 			 * screen for us.  but we do clear the screen
    947 			 * at least.
    948 			 */
    949 			memset(ri->ri_bits, 0, 1024);
    950 
    951 			radeonfb_modeswitch(dp);
    952 #ifdef SPLASHSCREEN
    953 			if (splash_render(&dp->rd_splash,
    954 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
    955 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    956 #endif
    957 		}
    958 
    959 		aa.console = dp->rd_console;
    960 		aa.scrdata = &dp->rd_wsscreenlist;
    961 		aa.accessops = &radeonfb_accessops;
    962 		aa.accesscookie = &dp->rd_vd;
    963 
    964 		config_found(sc->sc_dev, &aa, wsemuldisplaydevprint);
    965 
    966 		radeonfb_blank(dp, 0);
    967 
    968 		/* Initialise delayed lvds operations for backlight. */
    969 		callout_init(&dp->rd_bl_lvds_co, 0);
    970 		callout_setfunc(&dp->rd_bl_lvds_co,
    971 				radeonfb_lvds_callout, dp);
    972 		dp->rd_bl_on = 1;
    973 		dp->rd_bl_level = radeonfb_get_backlight(dp);
    974 		radeonfb_set_backlight(dp, dp->rd_bl_level);
    975 	}
    976 
    977 	for (i = i; i < RADEON_NDISPLAYS; i++)
    978 		radeonfb_init_palette(&sc->sc_displays[i]);
    979 
    980 	if (HAS_CRTC2(sc)) {
    981 		CLR32(sc, RADEON_CRTC2_GEN_CNTL, RADEON_CRTC2_DISP_DIS);
    982 	}
    983 
    984 	CLR32(sc, RADEON_CRTC_EXT_CNTL, RADEON_CRTC_DISPLAY_DIS);
    985 	SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_FPON);
    986 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_UP,
    987 	    radeonfb_brightness_up, TRUE);
    988 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_DOWN,
    989 	    radeonfb_brightness_down, TRUE);
    990 
    991 	config_found_ia(dev, "drm", aux, radeonfb_drm_print);
    992 
    993 	PRINTREG(RADEON_CRTC_EXT_CNTL);
    994 	PRINTREG(RADEON_CRTC_GEN_CNTL);
    995 	PRINTREG(RADEON_CRTC2_GEN_CNTL);
    996 	PRINTREG(RADEON_DISP_OUTPUT_CNTL);
    997 	PRINTREG(RADEON_DAC_CNTL2);
    998 	PRINTREG(RADEON_FP_GEN_CNTL);
    999 	PRINTREG(RADEON_FP2_GEN_CNTL);
   1000 
   1001 	return;
   1002 
   1003 error:
   1004 	if (sc->sc_biossz)
   1005 		free(sc->sc_bios, M_DEVBUF);
   1006 
   1007 	if (sc->sc_regsz)
   1008 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
   1009 
   1010 	if (sc->sc_memsz)
   1011 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
   1012 }
   1013 
   1014 static void
   1015 radeonfb_map(struct radeonfb_softc *sc)
   1016 {
   1017 	if (!sc->sc_mapped) {
   1018 		if (bus_space_map(sc->sc_regt, sc->sc_regaddr, sc->sc_regsz, 0,
   1019 		    &sc->sc_regh) != 0) {
   1020 			aprint_error_dev(sc->sc_dev,
   1021 			    "unable to map registers!\n");
   1022 			return;
   1023 		}
   1024 		if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
   1025 		    BUS_SPACE_MAP_LINEAR, &sc->sc_memh) != 0) {
   1026 			sc->sc_memsz = 0;
   1027 			aprint_error_dev(sc->sc_dev,
   1028 			    "Unable to map frame buffer\n");
   1029 			return;
   1030 		}
   1031 		sc->sc_mapped = TRUE;
   1032 	}
   1033 }
   1034 
   1035 static void
   1036 radeonfb_unmap(struct radeonfb_softc *sc)
   1037 {
   1038 	if (sc->sc_mapped) {
   1039 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
   1040 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
   1041 		sc->sc_mapped = FALSE;
   1042 	}
   1043 }
   1044 
   1045 static int
   1046 radeonfb_drm_print(void *aux, const char *pnp)
   1047 {
   1048 	if (pnp)
   1049 		aprint_normal("drm at %s", pnp);
   1050 	return (UNCONF);
   1051 }
   1052 
   1053 int
   1054 radeonfb_ioctl(void *v, void *vs,
   1055     unsigned long cmd, void *d, int flag, struct lwp *l)
   1056 {
   1057 	struct vcons_data	*vd;
   1058 	struct radeonfb_display	*dp;
   1059 	struct radeonfb_softc	*sc;
   1060 	struct wsdisplay_param  *param;
   1061 
   1062 	vd = (struct vcons_data *)v;
   1063 	dp = (struct radeonfb_display *)vd->cookie;
   1064 	sc = dp->rd_softc;
   1065 
   1066 	switch (cmd) {
   1067 	case WSDISPLAYIO_GTYPE:
   1068 		*(unsigned *)d = WSDISPLAY_TYPE_PCIMISC;
   1069 		return 0;
   1070 
   1071 	case WSDISPLAYIO_GINFO:
   1072 		if (vd->active != NULL) {
   1073 			struct wsdisplay_fbinfo *fb;
   1074 			fb = (struct wsdisplay_fbinfo *)d;
   1075 			fb->width = dp->rd_virtx;
   1076 			fb->height = dp->rd_virty;
   1077 			fb->depth = dp->rd_bpp;
   1078 			fb->cmsize = 256;
   1079 			return 0;
   1080 		} else
   1081 			return ENODEV;
   1082 	case WSDISPLAYIO_GVIDEO:
   1083 		if (radeonfb_isblank(dp))
   1084 			*(unsigned *)d = WSDISPLAYIO_VIDEO_OFF;
   1085 		else
   1086 			*(unsigned *)d = WSDISPLAYIO_VIDEO_ON;
   1087 		return 0;
   1088 
   1089 	case WSDISPLAYIO_SVIDEO:
   1090 		radeonfb_blank(dp,
   1091 		    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_OFF));
   1092 		return 0;
   1093 
   1094 	case WSDISPLAYIO_GETCMAP:
   1095 #if 0
   1096 		if (dp->rd_bpp == 8)
   1097 			return radeonfb_getcmap(sc,
   1098 			    (struct wsdisplay_cmap *)d);
   1099 #endif
   1100 		return EINVAL;
   1101 
   1102 	case WSDISPLAYIO_PUTCMAP:
   1103 #if 0
   1104 		if (dp->rd_bpp == 8)
   1105 			return radeonfb_putcmap(sc,
   1106 			    (struct wsdisplay_cmap *)d);
   1107 #endif
   1108 		return EINVAL;
   1109 
   1110 	case WSDISPLAYIO_LINEBYTES:
   1111 		*(unsigned *)d = dp->rd_stride;
   1112 		return 0;
   1113 
   1114 	case WSDISPLAYIO_SMODE:
   1115 		if (*(int *)d != dp->rd_wsmode) {
   1116 			dp->rd_wsmode = *(int *)d;
   1117 			if ((dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) &&
   1118 			    (dp->rd_vd.active)) {
   1119 			    	radeonfb_map(sc);
   1120 				radeonfb_engine_init(dp);
   1121 				glyphcache_wipe(&dp->rd_gc);
   1122 				radeonfb_init_palette(dp);
   1123 				radeonfb_modeswitch(dp);
   1124 				vcons_redraw_screen(dp->rd_vd.active);
   1125 			} else {
   1126 				radeonfb_unmap(sc);
   1127 			}
   1128 		}
   1129 		return 0;
   1130 
   1131 	case WSDISPLAYIO_GCURMAX:
   1132 		((struct wsdisplay_curpos *)d)->x = RADEON_CURSORMAXX;
   1133 		((struct wsdisplay_curpos *)d)->y = RADEON_CURSORMAXY;
   1134 		return 0;
   1135 
   1136 	case WSDISPLAYIO_SCURSOR:
   1137 		return radeonfb_set_cursor(dp, (struct wsdisplay_cursor *)d);
   1138 
   1139 	case WSDISPLAYIO_GCURSOR:
   1140 		return EPASSTHROUGH;
   1141 
   1142 	case WSDISPLAYIO_GCURPOS:
   1143 		((struct wsdisplay_curpos *)d)->x = dp->rd_cursor.rc_pos.x;
   1144 		((struct wsdisplay_curpos *)d)->y = dp->rd_cursor.rc_pos.y;
   1145 		return 0;
   1146 
   1147 	case WSDISPLAYIO_SCURPOS:
   1148 		return radeonfb_set_curpos(dp, (struct wsdisplay_curpos *)d);
   1149 
   1150 	case WSDISPLAYIO_SSPLASH:
   1151 #if defined(SPLASHSCREEN)
   1152 		if (*(int *)d == 1) {
   1153 			SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
   1154 			splash_render(&dp->rd_splash,
   1155 			    SPLASH_F_CENTER|SPLASH_F_FILL);
   1156 		} else
   1157 			SCREEN_ENABLE_DRAWING(&dp->rd_vscreen);
   1158 		return 0;
   1159 #else
   1160 		return ENODEV;
   1161 #endif
   1162 	case WSDISPLAYIO_GETPARAM:
   1163 		param = (struct wsdisplay_param *)d;
   1164 		switch (param->param) {
   1165 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
   1166 			param->min = 0;
   1167 			param->max = 255;
   1168 			param->curval = dp->rd_bl_level;
   1169 			return 0;
   1170 		case WSDISPLAYIO_PARAM_BACKLIGHT:
   1171 			param->min = 0;
   1172 			param->max = RADEONFB_BACKLIGHT_MAX;
   1173 			param->curval = dp->rd_bl_on;
   1174 			return 0;
   1175 		}
   1176 		return EPASSTHROUGH;
   1177 
   1178 	case WSDISPLAYIO_SETPARAM:
   1179 		param = (struct wsdisplay_param *)d;
   1180 		switch (param->param) {
   1181 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
   1182 			radeonfb_set_backlight(dp, param->curval);
   1183 			return 0;
   1184 		case WSDISPLAYIO_PARAM_BACKLIGHT:
   1185 			radeonfb_switch_backlight(dp,  param->curval);
   1186 			return 0;
   1187 		}
   1188 		return EPASSTHROUGH;
   1189 
   1190 	/* PCI config read/write passthrough. */
   1191 	case PCI_IOC_CFGREAD:
   1192 	case PCI_IOC_CFGWRITE:
   1193 		return pci_devioctl(sc->sc_pc, sc->sc_pt, cmd, d, flag, l);
   1194 
   1195 	case WSDISPLAYIO_GET_BUSID:
   1196 		return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc,
   1197 		    sc->sc_pt, d);
   1198 
   1199 	case WSDISPLAYIO_GET_EDID: {
   1200 		struct wsdisplayio_edid_info *ei = d;
   1201 		return wsdisplayio_get_edid(sc->sc_dev, ei);
   1202 	}
   1203 
   1204 	default:
   1205 		return EPASSTHROUGH;
   1206 	}
   1207 }
   1208 
   1209 paddr_t
   1210 radeonfb_mmap(void *v, void *vs, off_t offset, int prot)
   1211 {
   1212 	struct vcons_data	*vd;
   1213 	struct radeonfb_display	*dp;
   1214 	struct radeonfb_softc	*sc;
   1215 	paddr_t			pa;
   1216 
   1217 	vd = (struct vcons_data *)v;
   1218 	dp = (struct radeonfb_display *)vd->cookie;
   1219 	sc = dp->rd_softc;
   1220 
   1221 	/* XXX: note that we don't allow mapping of registers right now */
   1222 	/* XXX: this means that the XFree86 radeon driver won't work */
   1223 	if ((offset >= 0) && (offset < (dp->rd_virty * dp->rd_stride))) {
   1224 		pa = bus_space_mmap(sc->sc_memt,
   1225 		    sc->sc_memaddr + dp->rd_offset + offset, 0,
   1226 		    prot, BUS_SPACE_MAP_LINEAR);
   1227 		return pa;
   1228 	}
   1229 
   1230 #ifdef RADEONFB_MMAP_BARS
   1231 	/*
   1232 	 * restrict all other mappings to processes with superuser privileges
   1233 	 * or the kernel itself
   1234 	 */
   1235 	if (kauth_authorize_machdep(kauth_cred_get(), KAUTH_MACHDEP_UNMANAGEDMEM,
   1236 	    NULL, NULL, NULL, NULL) != 0) {
   1237 		aprint_error_dev(sc->sc_dev, "mmap() rejected.\n");
   1238 		return -1;
   1239 	}
   1240 
   1241 	if ((offset >= sc->sc_regaddr) &&
   1242 	    (offset < sc->sc_regaddr + sc->sc_regsz)) {
   1243 		return bus_space_mmap(sc->sc_regt, offset, 0, prot,
   1244 		    BUS_SPACE_MAP_LINEAR);
   1245 	}
   1246 
   1247 	if ((offset >= sc->sc_memaddr) &&
   1248 	    (offset < sc->sc_memaddr + sc->sc_memsz)) {
   1249 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1250 		    BUS_SPACE_MAP_LINEAR);
   1251 	}
   1252 
   1253 	if ((offset >= sc->sc_romaddr) &&
   1254 	    (offset < sc->sc_romaddr + sc->sc_romsz)) {
   1255 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1256 		    BUS_SPACE_MAP_LINEAR);
   1257 	}
   1258 
   1259 #ifdef PCI_MAGIC_IO_RANGE
   1260 	/* allow mapping of IO space */
   1261 	if ((offset >= PCI_MAGIC_IO_RANGE) &&
   1262 	    (offset < PCI_MAGIC_IO_RANGE + 0x10000)) {
   1263 		pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE,
   1264 		    0, prot, 0);
   1265 		return pa;
   1266 	}
   1267 #endif /* PCI_MAGIC_IO_RANGE */
   1268 
   1269 #endif /* RADEONFB_MMAP_BARS */
   1270 
   1271 	return -1;
   1272 }
   1273 
   1274 static void
   1275 radeonfb_loadbios(struct radeonfb_softc *sc, const struct pci_attach_args *pa)
   1276 {
   1277 	bus_space_tag_t		romt;
   1278 	bus_space_handle_t	romh, biosh;
   1279 	bus_size_t		romsz;
   1280 	bus_addr_t		ptr;
   1281 
   1282 	if (pci_mapreg_map(pa, PCI_MAPREG_ROM, PCI_MAPREG_TYPE_ROM,
   1283 		BUS_SPACE_MAP_PREFETCHABLE, &romt, &romh, NULL, &romsz) != 0) {
   1284 		aprint_verbose("%s: unable to map BIOS!\n", XNAME(sc));
   1285 		return;
   1286 	}
   1287 
   1288 	pci_find_rom(pa, romt, romh, PCI_ROM_CODE_TYPE_X86, &biosh,
   1289 	    &sc->sc_biossz);
   1290 	if (sc->sc_biossz == 0) {
   1291 		aprint_verbose("%s: Video BIOS not present\n", XNAME(sc));
   1292 		return;
   1293 	}
   1294 
   1295 	sc->sc_bios = malloc(sc->sc_biossz, M_DEVBUF, M_WAITOK);
   1296 	bus_space_read_region_1(romt, biosh, 0, sc->sc_bios, sc->sc_biossz);
   1297 
   1298 	/* unmap the PCI expansion rom */
   1299 	bus_space_unmap(romt, romh, romsz);
   1300 
   1301 	/* turn off rom decoder now */
   1302 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM,
   1303 	    pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM) &
   1304 	    ~PCI_MAPREG_ROM_ENABLE);
   1305 
   1306 	ptr = GETBIOS16(sc, 0x48);
   1307 	if ((GETBIOS32(sc, ptr + 4) == 0x41544f4d /* "ATOM" */) ||
   1308 	    (GETBIOS32(sc, ptr + 4) == 0x4d4f5441 /* "MOTA" */)) {
   1309 		sc->sc_flags |= RFB_ATOM;
   1310 	}
   1311 
   1312 	aprint_verbose("%s: Found %d KB %s BIOS\n", XNAME(sc),
   1313 	    (unsigned)sc->sc_biossz >> 10, IS_ATOM(sc) ? "ATOM" : "Legacy");
   1314 }
   1315 
   1316 
   1317 uint32_t
   1318 radeonfb_get32(struct radeonfb_softc *sc, uint32_t reg)
   1319 {
   1320 
   1321 	return bus_space_read_4(sc->sc_regt, sc->sc_regh, reg);
   1322 }
   1323 
   1324 void
   1325 radeonfb_put32(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1326 {
   1327 
   1328 	bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, val);
   1329 }
   1330 
   1331 void
   1332 radeonfb_put32s(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1333 {
   1334 
   1335 	bus_space_write_stream_4(sc->sc_regt, sc->sc_regh, reg, val);
   1336 }
   1337 
   1338 void
   1339 radeonfb_mask32(struct radeonfb_softc *sc, uint32_t reg,
   1340     uint32_t andmask, uint32_t ormask)
   1341 {
   1342 	int		s;
   1343 	uint32_t	val;
   1344 
   1345 	s = splhigh();
   1346 	val = radeonfb_get32(sc, reg);
   1347 	val = (val & andmask) | ormask;
   1348 	radeonfb_put32(sc, reg, val);
   1349 	splx(s);
   1350 }
   1351 
   1352 uint32_t
   1353 radeonfb_getindex(struct radeonfb_softc *sc, uint32_t idx)
   1354 {
   1355 	int		s;
   1356 	uint32_t	val;
   1357 
   1358 	s = splhigh();
   1359 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1360 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1361 	splx(s);
   1362 
   1363 	return (val);
   1364 }
   1365 
   1366 void
   1367 radeonfb_putindex(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1368 {
   1369 	int	s;
   1370 
   1371 	s = splhigh();
   1372 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1373 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1374 	splx(s);
   1375 }
   1376 
   1377 void
   1378 radeonfb_maskindex(struct radeonfb_softc *sc, uint32_t idx,
   1379     uint32_t andmask, uint32_t ormask)
   1380 {
   1381 	int		s;
   1382 	uint32_t	val;
   1383 
   1384 	s = splhigh();
   1385 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1386 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1387 	val = (val & andmask) | ormask;
   1388 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1389 	splx(s);
   1390 }
   1391 
   1392 uint32_t
   1393 radeonfb_getpll(struct radeonfb_softc *sc, uint32_t idx)
   1394 {
   1395 	int		s;
   1396 	uint32_t	val;
   1397 
   1398 	s = splhigh();
   1399 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f));
   1400 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1401 	if (HAS_R300CG(sc))
   1402 		radeonfb_r300cg_workaround(sc);
   1403 	splx(s);
   1404 
   1405 	return (val);
   1406 }
   1407 
   1408 void
   1409 radeonfb_putpll(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1410 {
   1411 	int	s;
   1412 
   1413 	s = splhigh();
   1414 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1415 	    RADEON_PLL_WR_EN);
   1416 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1417 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1418 	splx(s);
   1419 }
   1420 
   1421 void
   1422 radeonfb_maskpll(struct radeonfb_softc *sc, uint32_t idx,
   1423     uint32_t andmask, uint32_t ormask)
   1424 {
   1425 	int		s;
   1426 	uint32_t	val;
   1427 
   1428 	s = splhigh();
   1429 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1430 		RADEON_PLL_WR_EN);
   1431 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1432 	val = (val & andmask) | ormask;
   1433 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1434 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1435 	splx(s);
   1436 }
   1437 
   1438 int
   1439 radeonfb_scratch_test(struct radeonfb_softc *sc, int reg, uint32_t v)
   1440 {
   1441 	uint32_t	saved;
   1442 
   1443 	saved = GET32(sc, reg);
   1444 	PUT32(sc, reg, v);
   1445 	if (GET32(sc, reg) != v) {
   1446 		return -1;
   1447 	}
   1448 	PUT32(sc, reg, saved);
   1449 	return 0;
   1450 }
   1451 
   1452 uintmax_t
   1453 radeonfb_getprop_num(struct radeonfb_softc *sc, const char *name,
   1454     uintmax_t defval)
   1455 {
   1456 	prop_number_t	pn;
   1457 	pn = prop_dictionary_get(device_properties(sc->sc_dev), name);
   1458 	if (pn == NULL) {
   1459 		return defval;
   1460 	}
   1461 	KASSERT(prop_object_type(pn) == PROP_TYPE_NUMBER);
   1462 	return (prop_number_integer_value(pn));
   1463 }
   1464 
   1465 int
   1466 radeonfb_getclocks(struct radeonfb_softc *sc)
   1467 {
   1468 	bus_addr_t	ptr;
   1469 	int		refclk = 0;
   1470 	int		refdiv = 0;
   1471 	int		minpll = 0;
   1472 	int		maxpll = 0;
   1473 
   1474 	/* load initial property values if port/board provides them */
   1475 	refclk = radeonfb_getprop_num(sc, "refclk", 0) & 0xffff;
   1476 	refdiv = radeonfb_getprop_num(sc, "refdiv", 0) & 0xffff;
   1477 	minpll = radeonfb_getprop_num(sc, "minpll", 0) & 0xffffffffU;
   1478 	maxpll = radeonfb_getprop_num(sc, "maxpll", 0) & 0xffffffffU;
   1479 
   1480 	PRINTPLL(RADEON_PPLL_REF_DIV);
   1481 	PRINTPLL(RADEON_PPLL_DIV_0);
   1482 	PRINTPLL(RADEON_PPLL_DIV_1);
   1483 	PRINTPLL(RADEON_PPLL_DIV_2);
   1484 	PRINTPLL(RADEON_PPLL_DIV_3);
   1485 	PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   1486 	PRINTPLL(RADEON_P2PLL_REF_DIV);
   1487 	PRINTPLL(RADEON_P2PLL_DIV_0);
   1488 
   1489 	if (refclk && refdiv && minpll && maxpll)
   1490 		goto dontprobe;
   1491 
   1492 	if (!sc->sc_biossz) {
   1493 		/* no BIOS */
   1494 		aprint_verbose("%s: No video BIOS, using default clocks\n",
   1495 		    XNAME(sc));
   1496 		if (IS_IGP(sc))
   1497 			refclk = refclk ? refclk : 1432;
   1498 		else
   1499 			refclk = refclk ? refclk : 2700;
   1500 		refdiv = refdiv ? refdiv : 12;
   1501 		minpll = minpll ? minpll : 12500;
   1502 		/* XXX
   1503 		 * Need to check if the firmware or something programmed a
   1504 		 * higher value than this, and if so, bump it.
   1505 		 * The RV280 in my iBook is unhappy if the PLL input is less
   1506 		 * than 360MHz
   1507 		 */
   1508 		maxpll = maxpll ? maxpll : 40000/*35000*/;
   1509 	} else if (IS_ATOM(sc)) {
   1510 		/* ATOM BIOS */
   1511 		ptr = GETBIOS16(sc, 0x48);
   1512 		ptr = GETBIOS16(sc, ptr + 32);	/* aka MasterDataStart */
   1513 		ptr = GETBIOS16(sc, ptr + 12);	/* pll info block */
   1514 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 82);
   1515 		minpll = minpll ? minpll : GETBIOS16(sc, ptr + 78);
   1516 		maxpll = maxpll ? maxpll : GETBIOS16(sc, ptr + 32);
   1517 		/*
   1518 		 * ATOM BIOS doesn't supply a reference divider, so we
   1519 		 * have to probe for it.
   1520 		 */
   1521 		if (refdiv < 2)
   1522 			refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1523 			    RADEON_PPLL_REF_DIV_MASK;
   1524 		/*
   1525 		 * if probe is zero, just assume one that should work
   1526 		 * for most parts
   1527 		 */
   1528 		if (refdiv < 2)
   1529 			refdiv = 12;
   1530 
   1531 	} else {
   1532 		uint32_t tmp = GETPLL(sc, RADEON_PPLL_REF_DIV);
   1533 		/* Legacy BIOS */
   1534 		ptr = GETBIOS16(sc, 0x48);
   1535 		ptr = GETBIOS16(sc, ptr + 0x30);
   1536 		if (IS_R300(sc)) {
   1537 			refdiv = refdiv ? refdiv :
   1538 			    (tmp & R300_PPLL_REF_DIV_ACC_MASK) >>
   1539 			    R300_PPLL_REF_DIV_ACC_SHIFT;
   1540 		} else {
   1541 			refdiv = refdiv ? refdiv :
   1542 			    tmp & RADEON_PPLL_REF_DIV_MASK;
   1543 		}
   1544 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 0x0E);
   1545 		refdiv = refdiv ? refdiv : GETBIOS16(sc, ptr + 0x10);
   1546 		minpll = minpll ? minpll : GETBIOS32(sc, ptr + 0x12);
   1547 		maxpll = maxpll ? maxpll : GETBIOS32(sc, ptr + 0x16);
   1548 	}
   1549 
   1550 
   1551 dontprobe:
   1552 	sc->sc_refclk = refclk * 10;
   1553 	sc->sc_refdiv = refdiv;
   1554 	sc->sc_minpll = minpll * 10;
   1555 	sc->sc_maxpll = maxpll * 10;
   1556 	return 0;
   1557 }
   1558 
   1559 int
   1560 radeonfb_calc_dividers(struct radeonfb_softc *sc, uint32_t dotclock,
   1561     uint32_t *postdivbit, uint32_t *feedbackdiv)
   1562 {
   1563 	int		i;
   1564 	uint32_t	outfreq;
   1565 	int		div;
   1566 
   1567 	DPRINTF(("dot clock: %u\n", dotclock));
   1568 	for (i = 0; (div = radeonfb_dividers[i].divider) != 0; i++) {
   1569 		outfreq = div * dotclock;
   1570 		if ((outfreq >= sc->sc_minpll) &&
   1571 		    (outfreq <= sc->sc_maxpll)) {
   1572 			DPRINTF(("outfreq: %u\n", outfreq));
   1573 			*postdivbit =
   1574 			    ((uint32_t)radeonfb_dividers[i].mask << 16);
   1575 			DPRINTF(("post divider: %d (mask %x)\n", div,
   1576 				    *postdivbit));
   1577 			break;
   1578 		}
   1579 	}
   1580 
   1581 	if (div == 0)
   1582 		return 1;
   1583 
   1584 	*feedbackdiv = DIVIDE(sc->sc_refdiv * outfreq, sc->sc_refclk);
   1585 	DPRINTF(("feedback divider: %d\n", *feedbackdiv));
   1586 	return 0;
   1587 }
   1588 
   1589 #if 0
   1590 #ifdef RADEONFB_DEBUG
   1591 static void
   1592 dump_buffer(const char *pfx, void *buffer, unsigned int size)
   1593 {
   1594 	char		asc[17];
   1595 	unsigned	ptr = (unsigned)buffer;
   1596 	char		*start = (char *)(ptr & ~0xf);
   1597 	char		*end = (char *)(ptr + size);
   1598 
   1599 	end = (char *)(((unsigned)end + 0xf) & ~0xf);
   1600 
   1601 	if (pfx == NULL) {
   1602 		pfx = "";
   1603 	}
   1604 
   1605 	while (start < end) {
   1606 		unsigned offset = (unsigned)start & 0xf;
   1607 		if (offset == 0) {
   1608 			printf("%s%x: ", pfx, (unsigned)start);
   1609 		}
   1610 		if (((unsigned)start < ptr) ||
   1611 		    ((unsigned)start >= (ptr + size))) {
   1612 			printf("  ");
   1613 			asc[offset] = ' ';
   1614 		} else {
   1615 			printf("%02x", *(unsigned char *)start);
   1616 			if ((*start >= ' ') && (*start <= '~')) {
   1617 				asc[offset] = *start;
   1618 			} else {
   1619 				asc[offset] = '.';
   1620 			}
   1621 		}
   1622 		asc[offset + 1] = 0;
   1623 		if (offset % 2) {
   1624 			printf(" ");
   1625 		}
   1626 		if (offset == 15) {
   1627 			printf(" %s\n", asc);
   1628 		}
   1629 		start++;
   1630 	}
   1631 }
   1632 #endif
   1633 #endif
   1634 
   1635 int
   1636 radeonfb_getconnectors(struct radeonfb_softc *sc)
   1637 {
   1638 	int	i;
   1639 	int	found = 0;
   1640 
   1641 	for (i = 0; i < 2; i++) {
   1642 		sc->sc_ports[i].rp_mon_type = RADEON_MT_UNKNOWN;
   1643 		sc->sc_ports[i].rp_ddc_type = RADEON_DDC_NONE;
   1644 		sc->sc_ports[i].rp_dac_type = RADEON_DAC_UNKNOWN;
   1645 		sc->sc_ports[i].rp_conn_type = RADEON_CONN_NONE;
   1646 		sc->sc_ports[i].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1647 	}
   1648 
   1649 	/*
   1650 	 * This logic is borrowed from Xorg's radeon driver.
   1651 	 */
   1652 	if (!sc->sc_biossz)
   1653 		goto nobios;
   1654 
   1655 	if (IS_ATOM(sc)) {
   1656 		/* not done yet */
   1657 	} else {
   1658 		uint16_t	ptr;
   1659 		int		port = 0;
   1660 
   1661 		ptr = GETBIOS16(sc, 0x48);
   1662 		ptr = GETBIOS16(sc, ptr + 0x50);
   1663 		for (i = 1; i < 4; i++) {
   1664 			uint16_t	entry;
   1665 			uint8_t		conn, ddc, dac, tmds;
   1666 
   1667 			/*
   1668 			 * Parse the connector table.  From reading the code,
   1669 			 * it appears to made up of 16-bit entries for each
   1670 			 * connector.  The 16-bits are defined as:
   1671 			 *
   1672 			 * bits 12-15	- connector type (0 == end of table)
   1673 			 * bits 8-11	- DDC type
   1674 			 * bits 5-7	- ???
   1675 			 * bit 4	- TMDS type (1 = EXT, 0 = INT)
   1676 			 * bits 1-3	- ???
   1677 			 * bit 0	- DAC, 1 = TVDAC, 0 = primary
   1678 			 */
   1679 			if (!GETBIOS8(sc, ptr + i * 2) && i > 1)
   1680 				break;
   1681 			entry = GETBIOS16(sc, ptr + i * 2);
   1682 
   1683 			conn = (entry >> 12) & 0xf;
   1684 			ddc = (entry >> 8) & 0xf;
   1685 			dac = (entry & 0x1) ? RADEON_DAC_TVDAC :
   1686 			    RADEON_DAC_PRIMARY;
   1687 			tmds = ((entry >> 4) & 0x1) ? RADEON_TMDS_EXT :
   1688 			    RADEON_TMDS_INT;
   1689 
   1690 			if (conn == RADEON_CONN_NONE)
   1691 				continue;	/* no connector */
   1692 
   1693 			if ((found > 0) &&
   1694 			    (sc->sc_ports[port].rp_ddc_type == ddc)) {
   1695 				/* duplicate entry for same connector */
   1696 				continue;
   1697 			}
   1698 
   1699 			/* internal DDC_DVI port gets priority */
   1700 			if ((ddc == RADEON_DDC_DVI) || (port == 1))
   1701 				port = 0;
   1702 			else
   1703 				port = 1;
   1704 
   1705 			sc->sc_ports[port].rp_ddc_type =
   1706 			    ddc > RADEON_DDC_CRT2 ? RADEON_DDC_NONE : ddc;
   1707 			sc->sc_ports[port].rp_dac_type = dac;
   1708 			sc->sc_ports[port].rp_conn_type =
   1709 			    min(conn, RADEON_CONN_UNSUPPORTED) ;
   1710 
   1711 			sc->sc_ports[port].rp_tmds_type = tmds;
   1712 
   1713 			if ((conn != RADEON_CONN_DVI_I) &&
   1714 			    (conn != RADEON_CONN_DVI_D) &&
   1715 			    (tmds == RADEON_TMDS_INT))
   1716 				sc->sc_ports[port].rp_tmds_type =
   1717 				    RADEON_TMDS_UNKNOWN;
   1718 			sc->sc_ports[port].rp_number = i - 1;
   1719 
   1720 			found += (port + 1);
   1721 		}
   1722 	}
   1723 
   1724 nobios:
   1725 	if (!found) {
   1726 		DPRINTF(("No connector info in BIOS!\n"));
   1727 		if IS_MOBILITY(sc) {
   1728 			/* default, port 0 = internal TMDS, port 1 = CRT */
   1729 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1730 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1731 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1732 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1733 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1734 			sc->sc_ports[0].rp_number = 0;
   1735 
   1736 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1737 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1738 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1739 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1740 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_EXT;
   1741 			sc->sc_ports[1].rp_number = 1;
   1742 		} else {
   1743 			/* default, port 0 = DVI, port 1 = CRT */
   1744 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1745 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1746 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1747 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1748 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1749 			sc->sc_ports[0].rp_number = 1;
   1750 
   1751 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1752 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1753 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1754 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1755 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1756 			sc->sc_ports[1].rp_number = 0;
   1757 		}
   1758 	}
   1759 
   1760 	/*
   1761 	 * Fixup for RS300/RS350/RS400 chips, that lack a primary DAC.
   1762 	 * these chips should use TVDAC for the VGA port.
   1763 	 */
   1764 	if (HAS_SDAC(sc)) {
   1765 		if (sc->sc_ports[0].rp_conn_type == RADEON_CONN_CRT) {
   1766 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1767 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1768 		} else {
   1769 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_TVDAC;
   1770 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1771 		}
   1772 	} else if (!HAS_CRTC2(sc)) {
   1773 		sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1774 	}
   1775 
   1776 	for (i = 0; i < 2; i++) {
   1777 		char	edid[128];
   1778 		uint8_t	ddc;
   1779 		struct edid_info *eip = &sc->sc_ports[i].rp_edid;
   1780 		prop_data_t edid_data;
   1781 
   1782 		DPRINTF(("Port #%d:\n", i));
   1783 		DPRINTF(("   conn = %d\n", sc->sc_ports[i].rp_conn_type));
   1784 		DPRINTF(("    ddc = %d\n", sc->sc_ports[i].rp_ddc_type));
   1785 		DPRINTF(("    dac = %d\n", sc->sc_ports[i].rp_dac_type));
   1786 		DPRINTF(("   tmds = %d\n", sc->sc_ports[i].rp_tmds_type));
   1787 		DPRINTF(("   crtc = %d\n", sc->sc_ports[i].rp_number));
   1788 
   1789 		sc->sc_ports[i].rp_edid_valid = 0;
   1790 		/* first look for static EDID data */
   1791 		if ((edid_data = prop_dictionary_get(device_properties(
   1792 		    sc->sc_dev), "EDID")) != NULL) {
   1793 
   1794 			aprint_debug_dev(sc->sc_dev, "using static EDID\n");
   1795 			memcpy(edid, prop_data_data_nocopy(edid_data), 128);
   1796 			if (edid_parse(edid, eip) == 0) {
   1797 
   1798 				sc->sc_ports[i].rp_edid_valid = 1;
   1799 			}
   1800 		}
   1801 		/* if we didn't find any we'll try to talk to the monitor */
   1802 		if (sc->sc_ports[i].rp_edid_valid != 1) {
   1803 
   1804 			ddc = sc->sc_ports[i].rp_ddc_type;
   1805 			if (ddc != RADEON_DDC_NONE) {
   1806 				if ((radeonfb_i2c_read_edid(sc, ddc, edid)
   1807 				    == 0) && (edid_parse(edid, eip) == 0)) {
   1808 
   1809 					sc->sc_ports[i].rp_edid_valid = 1;
   1810 #ifdef RADEONFB_DEBUG
   1811 					edid_print(eip);
   1812 #endif
   1813 				}
   1814 			}
   1815 		}
   1816 	}
   1817 
   1818 	return found;
   1819 }
   1820 
   1821 int
   1822 radeonfb_gettmds(struct radeonfb_softc *sc)
   1823 {
   1824 	int	i;
   1825 
   1826 	if (!sc->sc_biossz) {
   1827 		goto nobios;
   1828 	}
   1829 
   1830 	if (IS_ATOM(sc)) {
   1831 		/* XXX: not done yet */
   1832 	} else {
   1833 		uint16_t	ptr;
   1834 		int		n;
   1835 
   1836 		ptr = GETBIOS16(sc, 0x48);
   1837 		ptr = GETBIOS16(sc, ptr + 0x34);
   1838 		DPRINTF(("DFP table revision %d\n", GETBIOS8(sc, ptr)));
   1839 		if (GETBIOS8(sc, ptr) == 3) {
   1840 			/* revision three table */
   1841 			n = GETBIOS8(sc, ptr + 5) + 1;
   1842 			n = min(n, 4);
   1843 
   1844 			memset(sc->sc_tmds_pll, 0, sizeof (sc->sc_tmds_pll));
   1845 			for (i = 0; i < n; i++) {
   1846 				sc->sc_tmds_pll[i].rtp_pll = GETBIOS32(sc,
   1847 				    ptr + i * 10 + 8);
   1848 				sc->sc_tmds_pll[i].rtp_freq = GETBIOS16(sc,
   1849 				    ptr + i * 10 + 0x10);
   1850 				DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1851 					    sc->sc_tmds_pll[i].rtp_freq,
   1852 					    sc->sc_tmds_pll[i].rtp_pll));
   1853 			}
   1854 			return 0;
   1855 		}
   1856 	}
   1857 
   1858 nobios:
   1859 	DPRINTF(("no suitable DFP table present\n"));
   1860 	for (i = 0;
   1861 	     i < sizeof (radeonfb_tmds_pll) / sizeof (radeonfb_tmds_pll[0]);
   1862 	     i++) {
   1863 		int	j;
   1864 
   1865 		if (radeonfb_tmds_pll[i].family != sc->sc_family)
   1866 			continue;
   1867 
   1868 		for (j = 0; j < 4; j++) {
   1869 			sc->sc_tmds_pll[j] = radeonfb_tmds_pll[i].plls[j];
   1870 			DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1871 				    sc->sc_tmds_pll[j].rtp_freq,
   1872 				    sc->sc_tmds_pll[j].rtp_pll));
   1873 		}
   1874 		return 0;
   1875 	}
   1876 
   1877 	return -1;
   1878 }
   1879 
   1880 const struct videomode *
   1881 radeonfb_modelookup(const char *name)
   1882 {
   1883 	int	i;
   1884 
   1885 	for (i = 0; i < videomode_count; i++)
   1886 		if (!strcmp(name, videomode_list[i].name))
   1887 			return &videomode_list[i];
   1888 
   1889 	return NULL;
   1890 }
   1891 
   1892 void
   1893 radeonfb_pllwriteupdate(struct radeonfb_softc *sc, int crtc)
   1894 {
   1895 	if (crtc) {
   1896 		while (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   1897 		    RADEON_P2PLL_ATOMIC_UPDATE_R);
   1898 		SETPLL(sc, RADEON_P2PLL_REF_DIV, RADEON_P2PLL_ATOMIC_UPDATE_W);
   1899 	} else {
   1900 		while (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1901 		    RADEON_PPLL_ATOMIC_UPDATE_R);
   1902 		SETPLL(sc, RADEON_PPLL_REF_DIV, RADEON_PPLL_ATOMIC_UPDATE_W);
   1903 	}
   1904 }
   1905 
   1906 void
   1907 radeonfb_pllwaitatomicread(struct radeonfb_softc *sc, int crtc)
   1908 {
   1909 	int	i;
   1910 
   1911 	for (i = 10000; i; i--) {
   1912 		if (crtc) {
   1913 			if (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   1914 			    RADEON_P2PLL_ATOMIC_UPDATE_R)
   1915 				break;
   1916 		} else {
   1917 			if (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1918 			    RADEON_PPLL_ATOMIC_UPDATE_R)
   1919 				break;
   1920 		}
   1921 	}
   1922 }
   1923 
   1924 void
   1925 radeonfb_program_vclk(struct radeonfb_softc *sc, int dotclock, int crtc)
   1926 {
   1927 	uint32_t	pbit = 0;
   1928 	uint32_t	feed = 0;
   1929 	uint32_t	data, refdiv, div0;
   1930 
   1931 	radeonfb_calc_dividers(sc, dotclock, &pbit, &feed);
   1932 
   1933 	if (crtc == 0) {
   1934 
   1935 		refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV);
   1936 		if (IS_R300(sc)) {
   1937 			refdiv = (refdiv & ~R300_PPLL_REF_DIV_ACC_MASK) |
   1938 			    (sc->sc_refdiv << R300_PPLL_REF_DIV_ACC_SHIFT);
   1939 		} else {
   1940 			refdiv = (refdiv & ~RADEON_PPLL_REF_DIV_MASK) |
   1941 			    sc->sc_refdiv;
   1942 		}
   1943 		div0 = GETPLL(sc, RADEON_PPLL_DIV_0);
   1944 		div0 &= ~(RADEON_PPLL_FB3_DIV_MASK |
   1945 		    RADEON_PPLL_POST3_DIV_MASK);
   1946 		div0 |= pbit;
   1947 		div0 |= (feed & RADEON_PPLL_FB3_DIV_MASK);
   1948 
   1949 		if ((refdiv == GETPLL(sc, RADEON_PPLL_REF_DIV)) &&
   1950 		    (div0 == GETPLL(sc, RADEON_PPLL_DIV_0))) {
   1951 			/*
   1952 			 * nothing to do here, the PLL is already where we
   1953 			 * want it
   1954 			 */
   1955 			PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   1956 			    ~RADEON_PLL_DIV_SEL);
   1957 			aprint_debug_dev(sc->sc_dev, "no need to touch the PLL\n");
   1958 			return;
   1959 		}
   1960 
   1961 		/* alright, we do need to reprogram stuff */
   1962 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   1963 		    RADEON_VCLK_SRC_SEL_CPUCLK,
   1964 		    ~RADEON_VCLK_SRC_SEL_MASK);
   1965 
   1966 		/* put vclk into reset, use atomic updates */
   1967 		SETPLL(sc, RADEON_PPLL_CNTL,
   1968 		    RADEON_PPLL_REFCLK_SEL |
   1969 		    RADEON_PPLL_FBCLK_SEL |
   1970 		    RADEON_PPLL_RESET |
   1971 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   1972 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   1973 
   1974 		/* select clock 0 */
   1975 		PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   1976 		    ~RADEON_PLL_DIV_SEL);
   1977 
   1978 		PUTPLL(sc, RADEON_PPLL_REF_DIV, refdiv);
   1979 
   1980 		/* xf86-video-radeon does this, not sure why */
   1981 		PUTPLL(sc, RADEON_PPLL_DIV_0, div0);
   1982 		PUTPLL(sc, RADEON_PPLL_DIV_0, div0);
   1983 
   1984 		/* use the atomic update */
   1985 		radeonfb_pllwriteupdate(sc, crtc);
   1986 
   1987 		/* and wait for it to complete */
   1988 		radeonfb_pllwaitatomicread(sc, crtc);
   1989 
   1990 		/* program HTOTAL (why?) */
   1991 		PUTPLL(sc, RADEON_HTOTAL_CNTL, 0);
   1992 
   1993 		/* drop reset */
   1994 		CLRPLL(sc, RADEON_PPLL_CNTL,
   1995 		    RADEON_PPLL_RESET | RADEON_PPLL_SLEEP |
   1996 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   1997 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   1998 
   1999 		PRINTPLL(RADEON_PPLL_CNTL);
   2000 		PRINTPLL(RADEON_PPLL_REF_DIV);
   2001 		PRINTPLL(RADEON_PPLL_DIV_3);
   2002 
   2003 		/* give clock time to lock */
   2004 		delay(50000);
   2005 
   2006 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   2007 		    RADEON_VCLK_SRC_SEL_PPLLCLK,
   2008 		    ~RADEON_VCLK_SRC_SEL_MASK);
   2009 
   2010 	} else {
   2011 
   2012 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   2013 		    RADEON_PIX2CLK_SRC_SEL_CPUCLK,
   2014 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   2015 
   2016 		/* put vclk into reset, use atomic updates */
   2017 		SETPLL(sc, RADEON_P2PLL_CNTL,
   2018 		    RADEON_P2PLL_RESET |
   2019 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   2020 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   2021 
   2022 		/* program reference divider */
   2023 		PATCHPLL(sc, RADEON_P2PLL_REF_DIV, sc->sc_refdiv,
   2024 		    ~RADEON_P2PLL_REF_DIV_MASK);
   2025 
   2026 		/* program feedback and post dividers */
   2027 		data = GETPLL(sc, RADEON_P2PLL_DIV_0);
   2028 		data &= ~(RADEON_P2PLL_FB0_DIV_MASK |
   2029 		    RADEON_P2PLL_POST0_DIV_MASK);
   2030 		data |= pbit;
   2031 		data |= (feed & RADEON_P2PLL_FB0_DIV_MASK);
   2032 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   2033 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   2034 
   2035 		PRINTPLL(RADEON_P2PLL_REF_DIV);
   2036 		PRINTPLL(RADEON_P2PLL_DIV_0);
   2037 
   2038 		/* use the atomic update */
   2039 		radeonfb_pllwriteupdate(sc, crtc);
   2040 
   2041 		/* and wait for it to complete */
   2042 		radeonfb_pllwaitatomicread(sc, crtc);
   2043 
   2044 		/* program HTOTAL (why?) */
   2045 		PUTPLL(sc, RADEON_HTOTAL2_CNTL, 0);
   2046 
   2047 		/* drop reset */
   2048 		CLRPLL(sc, RADEON_P2PLL_CNTL,
   2049 		    RADEON_P2PLL_RESET | RADEON_P2PLL_SLEEP |
   2050 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   2051 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   2052 
   2053 		/* allow time for clock to lock */
   2054 		delay(50000);
   2055 
   2056 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   2057 		    RADEON_PIX2CLK_SRC_SEL_P2PLLCLK,
   2058 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   2059 	}
   2060 	PRINTREG(RADEON_CRTC_MORE_CNTL);
   2061 }
   2062 
   2063 void
   2064 radeonfb_modeswitch(struct radeonfb_display *dp)
   2065 {
   2066 	struct radeonfb_softc	*sc = dp->rd_softc;
   2067 	int			i;
   2068 
   2069 	/* blank the display while we switch modes */
   2070 	radeonfb_blank(dp, 1);
   2071 
   2072 #if 0
   2073 	SET32(sc, RADEON_CRTC_EXT_CNTL,
   2074 	    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2075 	    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2076 #endif
   2077 
   2078 	/* these registers might get in the way... */
   2079 	PUT32(sc, RADEON_OVR_CLR, 0);
   2080 	PUT32(sc, RADEON_OVR_WID_LEFT_RIGHT, 0);
   2081 	PUT32(sc, RADEON_OVR_WID_TOP_BOTTOM, 0);
   2082 	PUT32(sc, RADEON_OV0_SCALE_CNTL, 0);
   2083 	PUT32(sc, RADEON_SUBPIC_CNTL, 0);
   2084 	PUT32(sc, RADEON_VIPH_CONTROL, 0);
   2085 	PUT32(sc, RADEON_I2C_CNTL_1, 0);
   2086 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2087 	PUT32(sc, RADEON_CAP0_TRIG_CNTL, 0);
   2088 	PUT32(sc, RADEON_CAP1_TRIG_CNTL, 0);
   2089 	PUT32(sc, RADEON_SURFACE_CNTL, 0);
   2090 
   2091 	for (i = 0; i < dp->rd_ncrtcs; i++)
   2092 		radeonfb_setcrtc(dp, i);
   2093 
   2094 	/* activate the display */
   2095 	radeonfb_blank(dp, 0);
   2096 }
   2097 
   2098 void
   2099 radeonfb_setcrtc(struct radeonfb_display *dp, int index)
   2100 {
   2101 	int			crtc;
   2102 	struct videomode	*mode;
   2103 	struct radeonfb_softc	*sc;
   2104 	struct radeonfb_crtc	*cp;
   2105 	uint32_t		v;
   2106 	uint32_t		gencntl;
   2107 	uint32_t		htotaldisp;
   2108 	uint32_t		hsyncstrt;
   2109 	uint32_t		vtotaldisp;
   2110 	uint32_t		vsyncstrt;
   2111 	uint32_t		fphsyncstrt;
   2112 	uint32_t		fpvsyncstrt;
   2113 	uint32_t		fphtotaldisp;
   2114 	uint32_t		fpvtotaldisp;
   2115 	uint32_t		pitch;
   2116 
   2117 	sc = dp->rd_softc;
   2118 	cp = &dp->rd_crtcs[index];
   2119 	crtc = cp->rc_number;
   2120 	mode = &cp->rc_videomode;
   2121 
   2122 #if 1
   2123 	pitch = dp->rd_stride / dp->rd_bpp;
   2124 #else
   2125 	pitch = (((sc->sc_maxx * sc->sc_maxbpp) + ((sc->sc_maxbpp * 8) - 1)) /
   2126 	    (sc->sc_maxbpp * 8));
   2127 #endif
   2128 	switch (crtc) {
   2129 	case 0:
   2130 		gencntl = RADEON_CRTC_GEN_CNTL;
   2131 		htotaldisp = RADEON_CRTC_H_TOTAL_DISP;
   2132 		hsyncstrt = RADEON_CRTC_H_SYNC_STRT_WID;
   2133 		vtotaldisp = RADEON_CRTC_V_TOTAL_DISP;
   2134 		vsyncstrt = RADEON_CRTC_V_SYNC_STRT_WID;
   2135 		fpvsyncstrt = RADEON_FP_V_SYNC_STRT_WID;
   2136 		fphsyncstrt = RADEON_FP_H_SYNC_STRT_WID;
   2137 		fpvtotaldisp = RADEON_FP_CRTC_V_TOTAL_DISP;
   2138 		fphtotaldisp = RADEON_FP_CRTC_H_TOTAL_DISP;
   2139 		break;
   2140 	case 1:
   2141 		gencntl = RADEON_CRTC2_GEN_CNTL;
   2142 		htotaldisp = RADEON_CRTC2_H_TOTAL_DISP;
   2143 		hsyncstrt = RADEON_CRTC2_H_SYNC_STRT_WID;
   2144 		vtotaldisp = RADEON_CRTC2_V_TOTAL_DISP;
   2145 		vsyncstrt = RADEON_CRTC2_V_SYNC_STRT_WID;
   2146 		fpvsyncstrt = RADEON_FP_V2_SYNC_STRT_WID;
   2147 		fphsyncstrt = RADEON_FP_H2_SYNC_STRT_WID;
   2148 		fpvtotaldisp = RADEON_FP_CRTC2_V_TOTAL_DISP;
   2149 		fphtotaldisp = RADEON_FP_CRTC2_H_TOTAL_DISP;
   2150 		break;
   2151 	default:
   2152 		panic("Bad CRTC!");
   2153 		break;
   2154 	}
   2155 
   2156 	/*
   2157 	 * CRTC_GEN_CNTL - depth, accelerator mode, etc.
   2158 	 */
   2159 	/* only bother with 32bpp and 8bpp */
   2160 	v = dp->rd_format << RADEON_CRTC_PIX_WIDTH_SHIFT;
   2161 
   2162 	if (crtc == 1) {
   2163 		v |= RADEON_CRTC2_CRT2_ON | RADEON_CRTC2_EN;
   2164 	} else {
   2165 		v |= RADEON_CRTC_EXT_DISP_EN | RADEON_CRTC_EN;
   2166 	}
   2167 
   2168 	if (mode->flags & VID_DBLSCAN)
   2169 		v |= RADEON_CRTC2_DBL_SCAN_EN;
   2170 
   2171 	if (mode->flags & VID_INTERLACE)
   2172 		v |= RADEON_CRTC2_INTERLACE_EN;
   2173 
   2174 	if (mode->flags & VID_CSYNC) {
   2175 		v |= RADEON_CRTC2_CSYNC_EN;
   2176 		if (crtc == 1)
   2177 			v |= RADEON_CRTC2_VSYNC_TRISTAT;
   2178 	}
   2179 
   2180 	PUT32(sc, gencntl, v);
   2181 	DPRINTF(("CRTC%s_GEN_CNTL = %08x\n", crtc ? "2" : "", v));
   2182 
   2183 	/*
   2184 	 * CRTC_EXT_CNTL - preserve disable flags, set ATI linear and EXT_CNT
   2185 	 */
   2186 	v = GET32(sc, RADEON_CRTC_EXT_CNTL);
   2187 	if (crtc == 0) {
   2188 		v &= (RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2189 		    RADEON_CRTC_DISPLAY_DIS);
   2190 		v |= RADEON_XCRT_CNT_EN | RADEON_VGA_ATI_LINEAR;
   2191 		if (mode->flags & VID_CSYNC)
   2192 			v |= RADEON_CRTC_VSYNC_TRISTAT;
   2193 	}
   2194 	/* unconditional turn on CRT, in case first CRTC is DFP */
   2195 	v |= RADEON_CRTC_CRT_ON;
   2196 	PUT32(sc, RADEON_CRTC_EXT_CNTL, v);
   2197 	PRINTREG(RADEON_CRTC_EXT_CNTL);
   2198 
   2199 	/*
   2200 	 * H_TOTAL_DISP
   2201 	 */
   2202 	v = ((mode->hdisplay / 8) - 1) << 16;
   2203 	v |= (mode->htotal / 8) - 1;
   2204 	PUT32(sc, htotaldisp, v);
   2205 	DPRINTF(("CRTC%s_H_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2206 	PUT32(sc, fphtotaldisp, v);
   2207 	DPRINTF(("FP_H%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2208 
   2209 	/*
   2210 	 * H_SYNC_STRT_WID
   2211 	 */
   2212 	v = (((mode->hsync_end - mode->hsync_start) / 8) << 16);
   2213 	v |= mode->hsync_start;
   2214 	if (mode->flags & VID_NHSYNC)
   2215 		v |= RADEON_CRTC_H_SYNC_POL;
   2216 	PUT32(sc, hsyncstrt, v);
   2217 	DPRINTF(("CRTC%s_H_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2218 	PUT32(sc, fphsyncstrt, v);
   2219 	DPRINTF(("FP_H%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2220 
   2221 	/*
   2222 	 * V_TOTAL_DISP
   2223 	 */
   2224 	v = ((mode->vdisplay - 1) << 16);
   2225 	v |= (mode->vtotal - 1);
   2226 	PUT32(sc, vtotaldisp, v);
   2227 	DPRINTF(("CRTC%s_V_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2228 	PUT32(sc, fpvtotaldisp, v);
   2229 	DPRINTF(("FP_V%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2230 
   2231 	/*
   2232 	 * V_SYNC_STRT_WID
   2233 	 */
   2234 	v = ((mode->vsync_end - mode->vsync_start) << 16);
   2235 	v |= (mode->vsync_start - 1);
   2236 	if (mode->flags & VID_NVSYNC)
   2237 		v |= RADEON_CRTC_V_SYNC_POL;
   2238 	PUT32(sc, vsyncstrt, v);
   2239 	DPRINTF(("CRTC%s_V_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2240 	PUT32(sc, fpvsyncstrt, v);
   2241 	DPRINTF(("FP_V%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2242 
   2243 	radeonfb_program_vclk(sc, mode->dot_clock, crtc);
   2244 
   2245 	switch (crtc) {
   2246 	case 0:
   2247 		PUT32(sc, RADEON_CRTC_OFFSET, 0);
   2248 		PUT32(sc, RADEON_CRTC_OFFSET_CNTL, 0);
   2249 		PUT32(sc, RADEON_CRTC_PITCH, pitch);
   2250 		CLR32(sc, RADEON_DISP_MERGE_CNTL, RADEON_DISP_RGB_OFFSET_EN);
   2251 
   2252 		CLR32(sc, RADEON_CRTC_EXT_CNTL,
   2253 		    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2254 		    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2255 		CLR32(sc, RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B);
   2256 		PRINTREG(RADEON_CRTC_EXT_CNTL);
   2257 		PRINTREG(RADEON_CRTC_GEN_CNTL);
   2258 		PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   2259 		break;
   2260 
   2261 	case 1:
   2262 		PUT32(sc, RADEON_CRTC2_OFFSET, 0);
   2263 		PUT32(sc, RADEON_CRTC2_OFFSET_CNTL, 0);
   2264 		PUT32(sc, RADEON_CRTC2_PITCH, pitch);
   2265 		CLR32(sc, RADEON_DISP2_MERGE_CNTL, RADEON_DISP2_RGB_OFFSET_EN);
   2266 		CLR32(sc, RADEON_CRTC2_GEN_CNTL,
   2267 		    RADEON_CRTC2_VSYNC_DIS |
   2268 		    RADEON_CRTC2_HSYNC_DIS |
   2269 		    RADEON_CRTC2_DISP_DIS | RADEON_CRTC2_DISP_REQ_EN_B);
   2270 		PRINTREG(RADEON_CRTC2_GEN_CNTL);
   2271 		break;
   2272 	}
   2273 }
   2274 
   2275 int
   2276 radeonfb_isblank(struct radeonfb_display *dp)
   2277 {
   2278 	uint32_t	reg, mask;
   2279 
   2280 	if(!dp->rd_softc->sc_mapped)
   2281 		return 1;
   2282 
   2283 	if (dp->rd_crtcs[0].rc_number) {
   2284 		reg = RADEON_CRTC2_GEN_CNTL;
   2285 		mask = RADEON_CRTC2_DISP_DIS;
   2286 	} else {
   2287 		reg = RADEON_CRTC_EXT_CNTL;
   2288 		mask = RADEON_CRTC_DISPLAY_DIS;
   2289 	}
   2290 	return ((GET32(dp->rd_softc, reg) & mask) ? 1 : 0);
   2291 }
   2292 
   2293 void
   2294 radeonfb_blank(struct radeonfb_display *dp, int blank)
   2295 {
   2296 	struct radeonfb_softc	*sc = dp->rd_softc;
   2297 	uint32_t		reg, mask;
   2298 	uint32_t		fpreg, fpval;
   2299 	int			i;
   2300 
   2301 	if (!sc->sc_mapped)
   2302 		return;
   2303 
   2304 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   2305 
   2306 		if (dp->rd_crtcs[i].rc_number) {
   2307 			reg = RADEON_CRTC2_GEN_CNTL;
   2308 			mask = RADEON_CRTC2_DISP_DIS;
   2309 			fpreg = RADEON_FP2_GEN_CNTL;
   2310 			fpval = RADEON_FP2_ON;
   2311 		} else {
   2312 			reg = RADEON_CRTC_EXT_CNTL;
   2313 			mask = RADEON_CRTC_DISPLAY_DIS;
   2314 			fpreg = RADEON_FP_GEN_CNTL;
   2315 			fpval = RADEON_FP_FPON;
   2316 		}
   2317 
   2318 		if (blank) {
   2319 			SET32(sc, reg, mask);
   2320 			CLR32(sc, fpreg, fpval);
   2321 		} else {
   2322 			CLR32(sc, reg, mask);
   2323 			SET32(sc, fpreg, fpval);
   2324 		}
   2325 	}
   2326 	PRINTREG(RADEON_FP_GEN_CNTL);
   2327 	PRINTREG(RADEON_FP2_GEN_CNTL);
   2328 }
   2329 
   2330 void
   2331 radeonfb_init_screen(void *cookie, struct vcons_screen *scr, int existing,
   2332     long *defattr)
   2333 {
   2334 	struct radeonfb_display *dp = cookie;
   2335 	struct rasops_info *ri = &scr->scr_ri;
   2336 
   2337 	/* initialize font subsystem */
   2338 	wsfont_init();
   2339 
   2340 	DPRINTF(("init screen called, existing %d\n", existing));
   2341 
   2342 	ri->ri_depth = dp->rd_bpp;
   2343 	ri->ri_width = dp->rd_virtx;
   2344 	ri->ri_height = dp->rd_virty;
   2345 	ri->ri_stride = dp->rd_stride;
   2346 	ri->ri_flg = RI_CENTER;
   2347 	switch (ri->ri_depth) {
   2348 		case 8:
   2349 			ri->ri_flg |= RI_ENABLE_ALPHA | RI_8BIT_IS_RGB;
   2350 			break;
   2351 		case 32:
   2352 			ri->ri_flg |= RI_ENABLE_ALPHA;
   2353 			/* we run radeons in RGB even on SPARC hardware */
   2354 			ri->ri_rnum = 8;
   2355 			ri->ri_gnum = 8;
   2356 			ri->ri_bnum = 8;
   2357 			ri->ri_rpos = 16;
   2358 			ri->ri_gpos = 8;
   2359 			ri->ri_bpos = 0;
   2360 			break;
   2361 	}
   2362 
   2363 	ri->ri_bits = (void *)dp->rd_fbptr;
   2364 
   2365 #ifdef VCONS_DRAW_INTR
   2366 	scr->scr_flags |= VCONS_DONT_READ;
   2367 #endif
   2368 
   2369 	if (existing) {
   2370 		ri->ri_flg |= RI_CLEAR;
   2371 
   2372 		/* start a modeswitch now */
   2373 		radeonfb_modeswitch(dp);
   2374 	}
   2375 
   2376 	/*
   2377 	 * XXX: font selection should be based on properties, with some
   2378 	 * normal/reasonable default.
   2379 	 */
   2380 
   2381 	/* initialize and look for an initial font */
   2382 	rasops_init(ri, 0, 0);
   2383 	ri->ri_caps = WSSCREEN_UNDERLINE | WSSCREEN_HILIT |
   2384 		    WSSCREEN_WSCOLORS | WSSCREEN_REVERSE;
   2385 
   2386 	rasops_reconfig(ri, dp->rd_virty / ri->ri_font->fontheight,
   2387 		    dp->rd_virtx / ri->ri_font->fontwidth);
   2388 
   2389 	/* enable acceleration */
   2390 	dp->rd_putchar = ri->ri_ops.putchar;
   2391 	ri->ri_ops.copyrows = radeonfb_copyrows;
   2392 	ri->ri_ops.copycols = radeonfb_copycols;
   2393 	ri->ri_ops.eraserows = radeonfb_eraserows;
   2394 	ri->ri_ops.erasecols = radeonfb_erasecols;
   2395 	/* pick a putchar method based on font and Radeon model */
   2396 	if (ri->ri_font->stride < ri->ri_font->fontwidth) {
   2397 		/* got a bitmap font */
   2398 		if (IS_R300(dp->rd_softc)) {
   2399 			/*
   2400 			 * radeonfb_putchar() doesn't work right on some R3xx
   2401 			 * so we use software drawing here, the wrapper just
   2402 			 *  makes sure the engine is idle before scribbling
   2403 			 * into vram
   2404 			 */
   2405 			ri->ri_ops.putchar = radeonfb_putchar_wrapper;
   2406 		} else {
   2407 			ri->ri_ops.putchar = radeonfb_putchar;
   2408 		}
   2409 	} else {
   2410 		/* got an alpha font */
   2411 		switch(ri->ri_depth) {
   2412 			case 32:
   2413 				ri->ri_ops.putchar = radeonfb_putchar_aa32;
   2414 				break;
   2415 			case 8:
   2416 				ri->ri_ops.putchar = radeonfb_putchar_aa8;
   2417 				break;
   2418 			default:
   2419 				/* XXX this should never happen */
   2420 				panic("%s: depth is not 8 or 32 but we got an" \
   2421 					 " alpha font?!", __func__);
   2422 		}
   2423 	}
   2424 	ri->ri_ops.cursor = radeonfb_cursor;
   2425 }
   2426 
   2427 void
   2428 radeonfb_set_fbloc(struct radeonfb_softc *sc)
   2429 {
   2430 	uint32_t	gen, ext, gen2 = 0;
   2431 	uint32_t	agploc, aperbase, apersize, mcfbloc;
   2432 
   2433 	gen = GET32(sc, RADEON_CRTC_GEN_CNTL);
   2434 	/* XXX */
   2435 	ext = GET32(sc, RADEON_CRTC_EXT_CNTL) & ~RADEON_CRTC_DISPLAY_DIS;
   2436 	agploc = GET32(sc, RADEON_MC_AGP_LOCATION);
   2437 	aperbase = GET32(sc, RADEON_CONFIG_APER_0_BASE);
   2438 	apersize = GET32(sc, RADEON_CONFIG_APER_SIZE);
   2439 
   2440 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISP_REQ_EN_B);
   2441 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISPLAY_DIS);
   2442 #if 0
   2443 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISPLAY_DIS);
   2444 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISP_REQ_EN_B);
   2445 #endif
   2446 
   2447 	if (HAS_CRTC2(sc)) {
   2448 		gen2 = GET32(sc, RADEON_CRTC2_GEN_CNTL);
   2449 		PUT32(sc, RADEON_CRTC2_GEN_CNTL,
   2450 		    gen2 | RADEON_CRTC2_DISP_REQ_EN_B);
   2451 	}
   2452 
   2453 	delay(100000);
   2454 
   2455 	mcfbloc = (aperbase >> 16) |
   2456 	    ((aperbase + (apersize - 1)) & 0xffff0000);
   2457 
   2458 	sc->sc_aperbase = (mcfbloc & 0xffff) << 16;
   2459 	sc->sc_memsz = apersize;
   2460 
   2461 	if (((agploc & 0xffff) << 16) !=
   2462 	    ((mcfbloc & 0xffff0000U) + 0x10000)) {
   2463 		agploc = mcfbloc & 0xffff0000U;
   2464 		agploc |= ((agploc + 0x10000) >> 16);
   2465 	}
   2466 
   2467 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2468 
   2469 	PUT32(sc, RADEON_MC_FB_LOCATION, mcfbloc);
   2470 	PUT32(sc, RADEON_MC_AGP_LOCATION, agploc);
   2471 
   2472 	DPRINTF(("aperbase = %u\n", aperbase));
   2473 	PRINTREG(RADEON_MC_FB_LOCATION);
   2474 	PRINTREG(RADEON_MC_AGP_LOCATION);
   2475 
   2476 	PUT32(sc, RADEON_DISPLAY_BASE_ADDR, sc->sc_aperbase);
   2477 
   2478 	if (HAS_CRTC2(sc))
   2479 		PUT32(sc, RADEON_DISPLAY2_BASE_ADDR, sc->sc_aperbase);
   2480 
   2481 	PUT32(sc, RADEON_OV0_BASE_ADDR, sc->sc_aperbase);
   2482 
   2483 #if 0
   2484 	/* XXX: what is this AGP garbage? :-) */
   2485 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2486 #endif
   2487 
   2488 	delay(100000);
   2489 
   2490 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen);
   2491 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext);
   2492 
   2493 	if (HAS_CRTC2(sc))
   2494 		PUT32(sc, RADEON_CRTC2_GEN_CNTL, gen2);
   2495 }
   2496 
   2497 void
   2498 radeonfb_init_misc(struct radeonfb_softc *sc)
   2499 {
   2500 	PUT32(sc, RADEON_BUS_CNTL,
   2501 	    RADEON_BUS_MASTER_DIS |
   2502 	    RADEON_BUS_PREFETCH_MODE_ACT |
   2503 	    RADEON_BUS_PCI_READ_RETRY_EN |
   2504 	    RADEON_BUS_PCI_WRT_RETRY_EN |
   2505 	    (3 << RADEON_BUS_RETRY_WS_SHIFT) |
   2506 	    RADEON_BUS_MSTR_RD_MULT |
   2507 	    RADEON_BUS_MSTR_RD_LINE |
   2508 	    RADEON_BUS_RD_DISCARD_EN |
   2509 	    RADEON_BUS_MSTR_DISCONNECT_EN |
   2510 	    RADEON_BUS_READ_BURST);
   2511 
   2512 	PUT32(sc, RADEON_BUS_CNTL1, 0xf0);
   2513 	/* PUT32(sc, RADEON_SEPROM_CNTL1, 0x09ff0000); */
   2514 	PUT32(sc, RADEON_FCP_CNTL, RADEON_FCP0_SRC_GND);
   2515 	PUT32(sc, RADEON_RBBM_CNTL,
   2516 	    (3 << RADEON_RB_SETTLE_SHIFT) |
   2517 	    (4 << RADEON_ABORTCLKS_HI_SHIFT) |
   2518 	    (4 << RADEON_ABORTCLKS_CP_SHIFT) |
   2519 	    (4 << RADEON_ABORTCLKS_CFIFO_SHIFT));
   2520 
   2521 	/* XXX: figure out what these mean! */
   2522 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2523 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2524 #if 0
   2525 	PUT32(sc, RADEON_DISP_MISC_CNTL, 0x5bb00400);
   2526 #endif
   2527 
   2528 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2529 	PUT32(sc, RADEON_GEN_INT_STATUS, GET32(sc, RADEON_GEN_INT_STATUS));
   2530 }
   2531 
   2532 /*
   2533  * This loads a linear color map for true color.
   2534  */
   2535 void
   2536 radeonfb_init_palette(struct radeonfb_display *dp)
   2537 {
   2538 	struct radeonfb_softc *sc = dp->rd_softc;
   2539 	int		i, cc;
   2540 	uint32_t	vclk;
   2541 	int		crtc;
   2542 
   2543 #define	DAC_WIDTH ((1 << 10) - 1)
   2544 #define	CLUT_WIDTH ((1 << 8) - 1)
   2545 #define	CLUT_COLOR(i)      ((i * DAC_WIDTH * 2 / CLUT_WIDTH + 1) / 2)
   2546 
   2547 	vclk = GETPLL(sc, RADEON_VCLK_ECP_CNTL);
   2548 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk & ~RADEON_PIXCLK_DAC_ALWAYS_ONb);
   2549 
   2550 	/* initialize the palette for every CRTC used by this display */
   2551 	for (cc = 0; cc < dp->rd_ncrtcs; cc++) {
   2552 		crtc = dp->rd_crtcs[cc].rc_number;
   2553 
   2554 		if (crtc)
   2555 			SET32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2556 		else
   2557 			CLR32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2558 
   2559 		PUT32(sc, RADEON_PALETTE_INDEX, 0);
   2560 
   2561 		if (dp->rd_bpp == 0)
   2562 			dp->rd_bpp = RADEONFB_DEFAULT_DEPTH;
   2563 
   2564 		if (dp->rd_bpp == 8) {
   2565 			/* ANSI palette */
   2566 			int j = 0;
   2567 			uint32_t tmp, r, g, b;
   2568 
   2569         	        for (i = 0; i <= CLUT_WIDTH; ++i) {
   2570     				tmp = i & 0xe0;
   2571 				/*
   2572 				 * replicate bits so 0xe0 maps to a red value of 0xff
   2573 				 * in order to make white look actually white
   2574 				 */
   2575 				tmp |= (tmp >> 3) | (tmp >> 6);
   2576 				r = tmp;
   2577 
   2578 				tmp = (i & 0x1c) << 3;
   2579 				tmp |= (tmp >> 3) | (tmp >> 6);
   2580 				g = tmp;
   2581 
   2582 				tmp = (i & 0x03) << 6;
   2583 				tmp |= tmp >> 2;
   2584 				tmp |= tmp >> 4;
   2585 				b = tmp;
   2586 
   2587 		            	PUT32(sc, RADEON_PALETTE_30_DATA,
   2588 					(r << 22) |
   2589 					(g << 12) |
   2590 					(b << 2));
   2591 				j += 3;
   2592 			}
   2593 		} else {
   2594 			/* linear ramp */
   2595 			for (i = 0; i <= CLUT_WIDTH; ++i) {
   2596 				PUT32(sc, RADEON_PALETTE_30_DATA,
   2597 				    (CLUT_COLOR(i) << 10) |
   2598 				    (CLUT_COLOR(i) << 20) |
   2599 				    (CLUT_COLOR(i)));
   2600 			}
   2601 		}
   2602 	}
   2603 
   2604 	CLR32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2605 	PRINTREG(RADEON_DAC_CNTL2);
   2606 
   2607 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk);
   2608 }
   2609 
   2610 /*
   2611  * Bugs in some R300 hardware requires this when accessing CLOCK_CNTL_INDEX.
   2612  */
   2613 void
   2614 radeonfb_r300cg_workaround(struct radeonfb_softc *sc)
   2615 {
   2616 	uint32_t	tmp, save;
   2617 
   2618 	save = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   2619 	tmp = save & ~(0x3f | RADEON_PLL_WR_EN);
   2620 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, tmp);
   2621 	tmp = GET32(sc, RADEON_CLOCK_CNTL_DATA);
   2622 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, save);
   2623 }
   2624 
   2625 /*
   2626  * Acceleration entry points.
   2627  */
   2628 
   2629 /* this one draws characters using bitmap fonts */
   2630 static void
   2631 radeonfb_putchar(void *cookie, int row, int col, u_int c, long attr)
   2632 {
   2633 	struct rasops_info	*ri = cookie;
   2634 	struct vcons_screen	*scr = ri->ri_hw;
   2635 	struct radeonfb_display	*dp = scr->scr_cookie;
   2636 	struct radeonfb_softc	*sc = dp->rd_softc;
   2637 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2638 	uint32_t		w, h;
   2639 	int			xd, yd, offset, i;
   2640 	uint32_t		bg, fg, gmc;
   2641 	uint32_t		reg;
   2642 	uint8_t			*data8;
   2643 	uint16_t		*data16;
   2644 	void			*data;
   2645 
   2646 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2647 		return;
   2648 
   2649 	if (!CHAR_IN_FONT(c, font))
   2650 		return;
   2651 
   2652 	w = font->fontwidth;
   2653 	h = font->fontheight;
   2654 
   2655 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2656 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2657 
   2658 	xd = ri->ri_xorigin + col * w;
   2659 	yd = ri->ri_yorigin + row * h;
   2660 
   2661 	if (c == 0x20) {
   2662 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   2663 		return;
   2664 	}
   2665 	data = WSFONT_GLYPH(c, font);
   2666 
   2667 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2668 
   2669 	radeonfb_wait_fifo(sc, 9);
   2670 
   2671 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2672 	    RADEON_GMC_BRUSH_NONE |
   2673 	    RADEON_GMC_SRC_DATATYPE_MONO_FG_BG |
   2674 	    RADEON_GMC_DST_CLIPPING |
   2675 	    RADEON_ROP3_S |
   2676 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2677 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2678 	    RADEON_GMC_WR_MSK_DIS |
   2679 	    gmc);
   2680 
   2681 	PUT32(sc, RADEON_SC_LEFT, xd);
   2682 	PUT32(sc, RADEON_SC_RIGHT, xd + w);
   2683 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, fg);
   2684 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, bg);
   2685 	PUT32(sc, RADEON_DP_CNTL,
   2686 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2687 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2688 
   2689 	PUT32(sc, RADEON_SRC_X_Y, 0);
   2690 	offset = 32 - (font->stride << 3);
   2691 	PUT32(sc, RADEON_DST_X_Y, ((xd - offset) << 16) | yd);
   2692 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (32 << 16) | h);
   2693 
   2694 	radeonfb_wait_fifo(sc, h);
   2695 	switch (font->stride) {
   2696 		case 1: {
   2697 			data8 = data;
   2698 			for (i = 0; i < h; i++) {
   2699 				reg = *data8;
   2700 #if BYTE_ORDER == LITTLE_ENDIAN
   2701 				reg = reg << 24;
   2702 #endif
   2703 				bus_space_write_stream_4(sc->sc_regt,
   2704 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   2705 				data8++;
   2706 			}
   2707 			break;
   2708 		}
   2709 		case 2: {
   2710 			data16 = data;
   2711 			for (i = 0; i < h; i++) {
   2712 				reg = *data16;
   2713 #if BYTE_ORDER == LITTLE_ENDIAN
   2714 				reg = reg << 16;
   2715 #endif
   2716 				bus_space_write_stream_4(sc->sc_regt,
   2717 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   2718 				data16++;
   2719 			}
   2720 			break;
   2721 		}
   2722 	}
   2723 	if (attr & 1)
   2724 		radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   2725 }
   2726 
   2727 /* ... while this one is for anti-aliased ones */
   2728 static void
   2729 radeonfb_putchar_aa32(void *cookie, int row, int col, u_int c, long attr)
   2730 {
   2731 	struct rasops_info	*ri = cookie;
   2732 	struct vcons_screen	*scr = ri->ri_hw;
   2733 	struct radeonfb_display	*dp = scr->scr_cookie;
   2734 	struct radeonfb_softc	*sc = dp->rd_softc;
   2735 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2736 	uint32_t		bg, fg, gmc;
   2737 	uint8_t			*data;
   2738 	int			w, h, xd, yd;
   2739 	int 			i, r, g, b, aval;
   2740 	int 			rf, gf, bf, rb, gb, bb;
   2741 	uint32_t 		pixel;
   2742 	int rv;
   2743 
   2744 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2745 		return;
   2746 
   2747 	if (!CHAR_IN_FONT(c, font))
   2748 		return;
   2749 
   2750 	w = font->fontwidth;
   2751 	h = font->fontheight;
   2752 
   2753 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2754 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2755 
   2756 	xd = ri->ri_xorigin + col * w;
   2757 	yd = ri->ri_yorigin + row * h;
   2758 
   2759 	if (c == 0x20) {
   2760 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   2761 		if (attr & 1)
   2762 			radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   2763 		return;
   2764 	}
   2765 	rv = glyphcache_try(&dp->rd_gc, c, xd, yd, attr);
   2766 	if (rv == GC_OK)
   2767 		return;
   2768 
   2769 	data = WSFONT_GLYPH(c, font);
   2770 
   2771 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2772 
   2773 	radeonfb_wait_fifo(sc, 5);
   2774 
   2775 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2776 	    RADEON_GMC_BRUSH_NONE |
   2777 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2778 	    RADEON_ROP3_S |
   2779 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2780 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2781 	    RADEON_GMC_WR_MSK_DIS |
   2782 	    gmc);
   2783 
   2784 	PUT32(sc, RADEON_DP_CNTL,
   2785 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2786 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2787 
   2788 	PUT32(sc, RADEON_SRC_X_Y, 0);
   2789 	PUT32(sc, RADEON_DST_X_Y, (xd << 16) | yd);
   2790 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (w << 16) | h);
   2791 
   2792 	rf = (fg >> 16) & 0xff;
   2793 	rb = (bg >> 16) & 0xff;
   2794 	gf = (fg >> 8) & 0xff;
   2795 	gb = (bg >> 8) & 0xff;
   2796 	bf =  fg & 0xff;
   2797 	bb =  bg & 0xff;
   2798 
   2799 	/*
   2800 	 * I doubt we can upload data faster than even the slowest Radeon
   2801 	 * could process them, especially when doing the alpha blending stuff
   2802 	 * along the way, so just make sure there's some room in the FIFO and
   2803 	 * then hammer away
   2804 	 * As it turns out we can, so make periodic stops to let the FIFO
   2805 	 * drain.
   2806 	 */
   2807 	radeonfb_wait_fifo(sc, 20);
   2808 	for (i = 0; i < ri->ri_fontscale; i++) {
   2809 		aval = *data;
   2810 		data++;
   2811 		if (aval == 0) {
   2812 			pixel = bg;
   2813 		} else if (aval == 255) {
   2814 			pixel = fg;
   2815 		} else {
   2816 			r = aval * rf + (255 - aval) * rb;
   2817 			g = aval * gf + (255 - aval) * gb;
   2818 			b = aval * bf + (255 - aval) * bb;
   2819 			pixel = (r & 0xff00) << 8 |
   2820 			        (g & 0xff00) |
   2821 			        (b & 0xff00) >> 8;
   2822 		}
   2823 		if (i & 16)
   2824 			radeonfb_wait_fifo(sc, 20);
   2825 		PUT32(sc, RADEON_HOST_DATA0, pixel);
   2826 	}
   2827 	if (rv == GC_ADD) {
   2828 		glyphcache_add(&dp->rd_gc, c, xd, yd);
   2829 	} else
   2830 		if (attr & 1)
   2831 			radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   2832 
   2833 }
   2834 
   2835 static void
   2836 radeonfb_putchar_aa8(void *cookie, int row, int col, u_int c, long attr)
   2837 {
   2838 	struct rasops_info	*ri = cookie;
   2839 	struct vcons_screen	*scr = ri->ri_hw;
   2840 	struct radeonfb_display	*dp = scr->scr_cookie;
   2841 	struct radeonfb_softc	*sc = dp->rd_softc;
   2842 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2843 	uint32_t bg, fg, latch = 0, bg8, fg8, pixel, gmc;
   2844 	int i, x, y, wi, he, r, g, b, aval;
   2845 	int r1, g1, b1, r0, g0, b0, fgo, bgo;
   2846 	uint8_t *data8;
   2847 	int rv, cnt;
   2848 
   2849 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2850 		return;
   2851 
   2852 	if (!CHAR_IN_FONT(c, font))
   2853 		return;
   2854 
   2855 	wi = font->fontwidth;
   2856 	he = font->fontheight;
   2857 
   2858 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2859 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2860 
   2861 	x = ri->ri_xorigin + col * wi;
   2862 	y = ri->ri_yorigin + row * he;
   2863 
   2864 	if (c == 0x20) {
   2865 		radeonfb_rectfill(dp, x, y, wi, he, bg);
   2866 		if (attr & 1)
   2867 			radeonfb_rectfill(dp, x, y + he - 2, wi, 1, fg);
   2868 		return;
   2869 	}
   2870 	rv = glyphcache_try(&dp->rd_gc, c, x, y, attr);
   2871 	if (rv == GC_OK)
   2872 		return;
   2873 
   2874 	data8 = WSFONT_GLYPH(c, font);
   2875 
   2876 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2877 
   2878 	radeonfb_wait_fifo(sc, 5);
   2879 
   2880 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2881 	    RADEON_GMC_BRUSH_NONE |
   2882 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2883 	    RADEON_ROP3_S |
   2884 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2885 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2886 	    RADEON_GMC_WR_MSK_DIS |
   2887 	    gmc);
   2888 
   2889 	PUT32(sc, RADEON_DP_CNTL,
   2890 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2891 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2892 
   2893 	PUT32(sc, RADEON_SRC_X_Y, 0);
   2894 	PUT32(sc, RADEON_DST_X_Y, (x << 16) | y);
   2895 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (wi << 16) | he);
   2896 
   2897 	/*
   2898 	 * we need the RGB colours here, so get offsets into rasops_cmap
   2899 	 */
   2900 	fgo = ((attr >> 24) & 0xf) * 3;
   2901 	bgo = ((attr >> 16) & 0xf) * 3;
   2902 
   2903 	r0 = rasops_cmap[bgo];
   2904 	r1 = rasops_cmap[fgo];
   2905 	g0 = rasops_cmap[bgo + 1];
   2906 	g1 = rasops_cmap[fgo + 1];
   2907 	b0 = rasops_cmap[bgo + 2];
   2908 	b1 = rasops_cmap[fgo + 2];
   2909 #define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6))
   2910 	bg8 = R3G3B2(r0, g0, b0);
   2911 	fg8 = R3G3B2(r1, g1, b1);
   2912 
   2913 	radeonfb_wait_fifo(sc, 20);
   2914 	cnt = 0;
   2915 	for (i = 0; i < ri->ri_fontscale; i++) {
   2916 		aval = *data8;
   2917 		if (aval == 0) {
   2918 			pixel = bg8;
   2919 		} else if (aval == 255) {
   2920 			pixel = fg8;
   2921 		} else {
   2922 			r = aval * r1 + (255 - aval) * r0;
   2923 			g = aval * g1 + (255 - aval) * g0;
   2924 			b = aval * b1 + (255 - aval) * b0;
   2925 			pixel = ((r & 0xe000) >> 8) |
   2926 				((g & 0xe000) >> 11) |
   2927 				((b & 0xc000) >> 14);
   2928 		}
   2929 		latch |= pixel << (8 * (i & 3));
   2930 		/* write in 32bit chunks */
   2931 		if ((i & 3) == 3) {
   2932 			PUT32(sc, RADEON_HOST_DATA0, latch);
   2933 			/*
   2934 			 * not strictly necessary, old data should be shifted
   2935 			 * out
   2936 			 */
   2937 			latch = 0;
   2938 			cnt++;
   2939 			if (cnt > 16) {
   2940 				cnt = 0;
   2941 				radeonfb_wait_fifo(sc, 20);
   2942 			}
   2943 		}
   2944 		data8++;
   2945 	}
   2946 	/* if we have pixels left in latch write them out */
   2947 	if ((i & 3) != 0) {
   2948 		/*
   2949 		 * radeon is weird - apparently leftover pixels are written
   2950 		 * from the middle, not from the left as everything else
   2951 		 */
   2952 		PUT32(sc, RADEON_HOST_DATA0, latch);
   2953 	}
   2954 
   2955 	if (rv == GC_ADD) {
   2956 		glyphcache_add(&dp->rd_gc, c, x, y);
   2957 	} else
   2958 		if (attr & 1)
   2959 			radeonfb_rectfill(dp, x, y + he - 2, wi, 1, fg);
   2960 
   2961 }
   2962 
   2963 /*
   2964  * wrapper for software character drawing
   2965  * just sync the engine and call rasops*_putchar()
   2966  */
   2967 
   2968 static void
   2969 radeonfb_putchar_wrapper(void *cookie, int row, int col, u_int c, long attr)
   2970 {
   2971 	struct rasops_info	*ri = cookie;
   2972 	struct vcons_screen	*scr = ri->ri_hw;
   2973 	struct radeonfb_display	*dp = scr->scr_cookie;
   2974 
   2975 	radeonfb_engine_idle(dp->rd_softc);
   2976 	dp->rd_putchar(ri, row, col, c, attr);
   2977 }
   2978 
   2979 static void
   2980 radeonfb_eraserows(void *cookie, int row, int nrows, long fillattr)
   2981 {
   2982 	struct rasops_info	*ri = cookie;
   2983 	struct vcons_screen	*scr = ri->ri_hw;
   2984 	struct radeonfb_display	*dp = scr->scr_cookie;
   2985 	uint32_t		x, y, w, h, fg, bg, ul;
   2986 
   2987 	/* XXX: check for full emulation mode? */
   2988 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2989 		x = ri->ri_xorigin;
   2990 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   2991 		w = ri->ri_emuwidth;
   2992 		h = ri->ri_font->fontheight * nrows;
   2993 
   2994 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   2995 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   2996 	}
   2997 }
   2998 
   2999 static void
   3000 radeonfb_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
   3001 {
   3002 	struct rasops_info	*ri = cookie;
   3003 	struct vcons_screen	*scr = ri->ri_hw;
   3004 	struct radeonfb_display	*dp = scr->scr_cookie;
   3005 	uint32_t		x, ys, yd, w, h;
   3006 
   3007 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3008 		x = ri->ri_xorigin;
   3009 		ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow;
   3010 		yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow;
   3011 		w = ri->ri_emuwidth;
   3012 		h = ri->ri_font->fontheight * nrows;
   3013 		radeonfb_bitblt(dp, x, ys, x, yd, w, h,
   3014 		    RADEON_ROP3_S);
   3015 	}
   3016 }
   3017 
   3018 static void
   3019 radeonfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
   3020 {
   3021 	struct rasops_info	*ri = cookie;
   3022 	struct vcons_screen	*scr = ri->ri_hw;
   3023 	struct radeonfb_display	*dp = scr->scr_cookie;
   3024 	uint32_t		xs, xd, y, w, h;
   3025 
   3026 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3027 		xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol;
   3028 		xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol;
   3029 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3030 		w = ri->ri_font->fontwidth * ncols;
   3031 		h = ri->ri_font->fontheight;
   3032 		radeonfb_bitblt(dp, xs, y, xd, y, w, h,
   3033 		    RADEON_ROP3_S);
   3034 	}
   3035 }
   3036 
   3037 static void
   3038 radeonfb_erasecols(void *cookie, int row, int startcol, int ncols,
   3039     long fillattr)
   3040 {
   3041 	struct rasops_info	*ri = cookie;
   3042 	struct vcons_screen	*scr = ri->ri_hw;
   3043 	struct radeonfb_display	*dp = scr->scr_cookie;
   3044 	uint32_t		x, y, w, h, fg, bg, ul;
   3045 
   3046 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3047 		x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol;
   3048 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3049 		w = ri->ri_font->fontwidth * ncols;
   3050 		h = ri->ri_font->fontheight;
   3051 
   3052 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   3053 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   3054 	}
   3055 }
   3056 
   3057 static void
   3058 radeonfb_cursor(void *cookie, int on, int row, int col)
   3059 {
   3060 	struct rasops_info *ri = cookie;
   3061 	struct vcons_screen *scr = ri->ri_hw;
   3062 	struct radeonfb_display	*dp = scr->scr_cookie;
   3063 	int x, y, wi, he;
   3064 
   3065 	wi = ri->ri_font->fontwidth;
   3066 	he = ri->ri_font->fontheight;
   3067 
   3068 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3069 		x = ri->ri_ccol * wi + ri->ri_xorigin;
   3070 		y = ri->ri_crow * he + ri->ri_yorigin;
   3071 		/* first turn off the old cursor */
   3072 		if (ri->ri_flg & RI_CURSOR) {
   3073 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   3074 			    RADEON_ROP3_Dn);
   3075 			ri->ri_flg &= ~RI_CURSOR;
   3076 		}
   3077 		ri->ri_crow = row;
   3078 		ri->ri_ccol = col;
   3079 		/* then (possibly) turn on the new one */
   3080 		if (on) {
   3081 			x = ri->ri_ccol * wi + ri->ri_xorigin;
   3082 			y = ri->ri_crow * he + ri->ri_yorigin;
   3083 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   3084 			    RADEON_ROP3_Dn);
   3085 			ri->ri_flg |= RI_CURSOR;
   3086 		}
   3087 	} else {
   3088 		scr->scr_ri.ri_crow = row;
   3089 		scr->scr_ri.ri_ccol = col;
   3090 		scr->scr_ri.ri_flg &= ~RI_CURSOR;
   3091 	}
   3092 }
   3093 
   3094 /*
   3095  * Underlying acceleration support.
   3096  */
   3097 
   3098 static void
   3099 radeonfb_rectfill(struct radeonfb_display *dp, int dstx, int dsty,
   3100     int width, int height, uint32_t color)
   3101 {
   3102 	struct radeonfb_softc	*sc = dp->rd_softc;
   3103 	uint32_t		gmc;
   3104 
   3105 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3106 
   3107 	radeonfb_wait_fifo(sc, 6);
   3108 
   3109 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3110 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3111 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3112 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3113 	    RADEON_ROP3_P | gmc);
   3114 
   3115 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, color);
   3116 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3117 	PUT32(sc, RADEON_DP_CNTL,
   3118 	    RADEON_DST_X_LEFT_TO_RIGHT |
   3119 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   3120 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   3121 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   3122 
   3123 }
   3124 
   3125 static void
   3126 radeonfb_rectfill_a(void *cookie, int dstx, int dsty,
   3127     int width, int height, long attr)
   3128 {
   3129 	struct radeonfb_display *dp = cookie;
   3130 
   3131 	radeonfb_rectfill(dp, dstx, dsty, width, height,
   3132 	    dp->rd_vscreen.scr_ri.ri_devcmap[(attr >> 24 & 0xf)]);
   3133 }
   3134 
   3135 static void
   3136 radeonfb_bitblt(void *cookie, int srcx, int srcy,
   3137     int dstx, int dsty, int width, int height, int rop)
   3138 {
   3139 	struct radeonfb_display *dp = cookie;
   3140 	struct radeonfb_softc	*sc = dp->rd_softc;
   3141 	uint32_t		gmc;
   3142 	uint32_t		dir;
   3143 
   3144 	if (dsty < srcy) {
   3145 		dir = RADEON_DST_Y_TOP_TO_BOTTOM;
   3146 	} else {
   3147 		srcy += height - 1;
   3148 		dsty += height - 1;
   3149 		dir = 0;
   3150 	}
   3151 	if (dstx < srcx) {
   3152 		dir |= RADEON_DST_X_LEFT_TO_RIGHT;
   3153 	} else {
   3154 		srcx += width - 1;
   3155 		dstx += width - 1;
   3156 	}
   3157 
   3158 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3159 
   3160 	radeonfb_wait_fifo(sc, 6);
   3161 
   3162 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3163 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3164 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3165 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3166 	    RADEON_DP_SRC_SOURCE_MEMORY |
   3167 	    rop | gmc);
   3168 
   3169 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3170 	PUT32(sc, RADEON_DP_CNTL, dir);
   3171 	PUT32(sc, RADEON_SRC_Y_X, (srcy << 16) | srcx);
   3172 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   3173 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   3174 }
   3175 
   3176 static void
   3177 radeonfb_engine_idle(struct radeonfb_softc *sc)
   3178 {
   3179 
   3180 	radeonfb_wait_fifo(sc, 64);
   3181 	while ((GET32(sc, RADEON_RBBM_STATUS) &
   3182 			RADEON_RBBM_ACTIVE) != 0);
   3183 	radeonfb_engine_flush(sc);
   3184 }
   3185 
   3186 static inline void
   3187 radeonfb_wait_fifo(struct radeonfb_softc *sc, int n)
   3188 {
   3189 	int	i;
   3190 
   3191 	for (i = RADEON_TIMEOUT; i; i--) {
   3192 		if ((GET32(sc, RADEON_RBBM_STATUS) &
   3193 			RADEON_RBBM_FIFOCNT_MASK) >= n)
   3194 			return;
   3195 	}
   3196 #ifdef	DIAGNOSTIC
   3197 	if (!i)
   3198 		printf("%s: timed out waiting for fifo (%x)\n",
   3199 		    XNAME(sc), GET32(sc, RADEON_RBBM_STATUS));
   3200 #endif
   3201 }
   3202 
   3203 static void
   3204 radeonfb_engine_flush(struct radeonfb_softc *sc)
   3205 {
   3206 	int	i = 0;
   3207 
   3208 	if (IS_R300(sc)) {
   3209 		SET32(sc, R300_DSTCACHE_CTLSTAT, R300_RB2D_DC_FLUSH_ALL);
   3210 		while (GET32(sc, R300_DSTCACHE_CTLSTAT) & R300_RB2D_DC_BUSY) {
   3211 			i++;
   3212 		}
   3213 	} else {
   3214 		SET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT,
   3215 		    RADEON_RB2D_DC_FLUSH_ALL);
   3216 		while (GET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT) &
   3217 			RADEON_RB2D_DC_BUSY) {
   3218 			i++;
   3219 		}
   3220 	}
   3221 #ifdef DIAGNOSTIC
   3222 	if (i > RADEON_TIMEOUT)
   3223 		printf("%s: engine flush timed out!\n", XNAME(sc));
   3224 #endif
   3225 }
   3226 
   3227 static inline void
   3228 radeonfb_unclip(struct radeonfb_softc *sc)
   3229 {
   3230 
   3231 	radeonfb_wait_fifo(sc, 2);
   3232 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   3233 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   3234 }
   3235 
   3236 static void
   3237 radeonfb_engine_init(struct radeonfb_display *dp)
   3238 {
   3239 	struct radeonfb_softc	*sc = dp->rd_softc;
   3240 	uint32_t		pitch;
   3241 	volatile uint32_t	junk;
   3242 
   3243 	/* no 3D */
   3244 	PUT32(sc, RADEON_RB3D_CNTL, 0);
   3245 
   3246 	radeonfb_engine_reset(sc);
   3247 	pitch = ((dp->rd_virtx * (dp->rd_bpp / 8) + 0x3f)) >> 6;
   3248 
   3249 	radeonfb_wait_fifo(sc, 1);
   3250 	if (!IS_R300(sc))
   3251 		PUT32(sc, RADEON_RB2D_DSTCACHE_MODE, 0);
   3252 
   3253 	radeonfb_wait_fifo(sc, 3);
   3254 	PUT32(sc, RADEON_DEFAULT_PITCH_OFFSET,
   3255 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   3256 
   3257 
   3258 	PUT32(sc, RADEON_DST_PITCH_OFFSET,
   3259 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   3260 	PUT32(sc, RADEON_SRC_PITCH_OFFSET,
   3261 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   3262 
   3263 	junk = GET32(sc, RADEON_DP_DATATYPE);
   3264 
   3265 	/* default scissors -- no clipping */
   3266 	radeonfb_wait_fifo(sc, 1);
   3267 	PUT32(sc, RADEON_DEFAULT_SC_BOTTOM_RIGHT,
   3268 	    RADEON_DEFAULT_SC_RIGHT_MAX | RADEON_DEFAULT_SC_BOTTOM_MAX);
   3269 
   3270 	radeonfb_wait_fifo(sc, 1);
   3271 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3272 	    (dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT) |
   3273 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3274 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3275 	    RADEON_GMC_SRC_DATATYPE_COLOR);
   3276 
   3277 	radeonfb_wait_fifo(sc, 10);
   3278 	PUT32(sc, RADEON_DST_LINE_START, 0);
   3279 	PUT32(sc, RADEON_DST_LINE_END, 0);
   3280 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, 0xffffffff);
   3281 	PUT32(sc, RADEON_DP_BRUSH_BKGD_CLR, 0);
   3282 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, 0xffffffff);
   3283 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, 0);
   3284 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3285 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   3286 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   3287 	PUT32(sc, RADEON_AUX_SC_CNTL, 0);
   3288 	radeonfb_engine_idle(sc);
   3289 }
   3290 
   3291 static void
   3292 radeonfb_engine_reset(struct radeonfb_softc *sc)
   3293 {
   3294 	uint32_t	hpc, rbbm, mclkcntl, clkindex;
   3295 
   3296 	radeonfb_engine_flush(sc);
   3297 
   3298 	clkindex = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   3299 	if (HAS_R300CG(sc))
   3300 		radeonfb_r300cg_workaround(sc);
   3301 	mclkcntl = GETPLL(sc, RADEON_MCLK_CNTL);
   3302 
   3303 	/*
   3304 	 * According to comments in XFree code, resetting the HDP via
   3305 	 * the RBBM_SOFT_RESET can cause bad behavior on some systems.
   3306 	 * So we use HOST_PATH_CNTL instead.
   3307 	 */
   3308 
   3309 	hpc = GET32(sc, RADEON_HOST_PATH_CNTL);
   3310 	rbbm = GET32(sc, RADEON_RBBM_SOFT_RESET);
   3311 	if (IS_R300(sc)) {
   3312 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   3313 		    RADEON_SOFT_RESET_CP |
   3314 		    RADEON_SOFT_RESET_HI |
   3315 		    RADEON_SOFT_RESET_E2);
   3316 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3317 		PUT32(sc, RADEON_RBBM_SOFT_RESET, 0);
   3318 		/*
   3319 		 * XXX: this bit is not defined in any ATI docs I have,
   3320 		 * nor in the XFree code, but XFree does it.  Why?
   3321 		 */
   3322 		SET32(sc, RADEON_RB2D_DSTCACHE_MODE, (1<<17));
   3323 	} else {
   3324 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   3325 		    RADEON_SOFT_RESET_CP |
   3326 		    RADEON_SOFT_RESET_SE |
   3327 		    RADEON_SOFT_RESET_RE |
   3328 		    RADEON_SOFT_RESET_PP |
   3329 		    RADEON_SOFT_RESET_E2 |
   3330 		    RADEON_SOFT_RESET_RB);
   3331 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3332 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm &
   3333 		    ~(RADEON_SOFT_RESET_CP |
   3334 			RADEON_SOFT_RESET_SE |
   3335 			RADEON_SOFT_RESET_RE |
   3336 			RADEON_SOFT_RESET_PP |
   3337 			RADEON_SOFT_RESET_E2 |
   3338 			RADEON_SOFT_RESET_RB));
   3339 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3340 	}
   3341 
   3342 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc | RADEON_HDP_SOFT_RESET);
   3343 	GET32(sc, RADEON_HOST_PATH_CNTL);
   3344 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc);
   3345 
   3346 	if (IS_R300(sc))
   3347 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm);
   3348 
   3349 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, clkindex);
   3350 	PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   3351 	PUTPLL(sc, RADEON_MCLK_CNTL, mclkcntl);
   3352 
   3353 	if (HAS_R300CG(sc))
   3354 		radeonfb_r300cg_workaround(sc);
   3355 }
   3356 
   3357 static int
   3358 radeonfb_set_curpos(struct radeonfb_display *dp, struct wsdisplay_curpos *pos)
   3359 {
   3360 	int		x, y;
   3361 
   3362 	x = pos->x;
   3363 	y = pos->y;
   3364 
   3365 	/*
   3366 	 * This doesn't let a cursor move off the screen.  I'm not
   3367 	 * sure if this will have negative effects for e.g. Xinerama.
   3368 	 * I'd guess Xinerama handles it by changing the cursor shape,
   3369 	 * but that needs verification.
   3370 	 */
   3371 	if (x >= dp->rd_virtx)
   3372 		x = dp->rd_virtx - 1;
   3373 	if (x < 0)
   3374 		x = 0;
   3375 	if (y >= dp->rd_virty)
   3376 		y = dp->rd_virty - 1;
   3377 	if (y < 0)
   3378 		y = 0;
   3379 
   3380 	dp->rd_cursor.rc_pos.x = x;
   3381 	dp->rd_cursor.rc_pos.y = y;
   3382 
   3383 	radeonfb_cursor_position(dp);
   3384 	return 0;
   3385 }
   3386 
   3387 static int
   3388 radeonfb_set_cursor(struct radeonfb_display *dp, struct wsdisplay_cursor *wc)
   3389 {
   3390 	unsigned	flags;
   3391 
   3392 	uint8_t		r[2], g[2], b[2];
   3393 	unsigned	index, count;
   3394 	int		i, err;
   3395 	int		pitch, size;
   3396 	struct radeonfb_cursor	nc;
   3397 
   3398 	flags = wc->which;
   3399 
   3400 	/* copy old values */
   3401 	nc = dp->rd_cursor;
   3402 
   3403 	if (flags & WSDISPLAY_CURSOR_DOCMAP) {
   3404 		index = wc->cmap.index;
   3405 		count = wc->cmap.count;
   3406 
   3407 		if (index >= 2 || (index + count) > 2)
   3408 			return EINVAL;
   3409 
   3410 		err = copyin(wc->cmap.red, &r[index], count);
   3411 		if (err)
   3412 			return err;
   3413 		err = copyin(wc->cmap.green, &g[index], count);
   3414 		if (err)
   3415 			return err;
   3416 		err = copyin(wc->cmap.blue, &b[index], count);
   3417 		if (err)
   3418 			return err;
   3419 
   3420 		for (i = index; i < index + count; i++) {
   3421 			nc.rc_cmap[i] =
   3422 			    (r[i] << 16) + (g[i] << 8) + (b[i] << 0);
   3423 		}
   3424 	}
   3425 
   3426 	if (flags & WSDISPLAY_CURSOR_DOSHAPE) {
   3427 		if ((wc->size.x > RADEON_CURSORMAXX) ||
   3428 		    (wc->size.y > RADEON_CURSORMAXY))
   3429 			return EINVAL;
   3430 
   3431 		/* figure bytes per line */
   3432 		pitch = (wc->size.x + 7) / 8;
   3433 		size = pitch * wc->size.y;
   3434 
   3435 		/* clear the old cursor and mask */
   3436 		memset(nc.rc_image, 0, 512);
   3437 		memset(nc.rc_mask, 0, 512);
   3438 
   3439 		nc.rc_size = wc->size;
   3440 
   3441 		if ((err = copyin(wc->image, nc.rc_image, size)) != 0)
   3442 			return err;
   3443 
   3444 		if ((err = copyin(wc->mask, nc.rc_mask, size)) != 0)
   3445 			return err;
   3446 	}
   3447 
   3448 	if (flags & WSDISPLAY_CURSOR_DOHOT) {
   3449 		nc.rc_hot = wc->hot;
   3450 		if (nc.rc_hot.x >= nc.rc_size.x)
   3451 			nc.rc_hot.x = nc.rc_size.x - 1;
   3452 		if (nc.rc_hot.y >= nc.rc_size.y)
   3453 			nc.rc_hot.y = nc.rc_size.y - 1;
   3454 	}
   3455 
   3456 	if (flags & WSDISPLAY_CURSOR_DOPOS) {
   3457 		nc.rc_pos = wc->pos;
   3458 		if (nc.rc_pos.x >= dp->rd_virtx)
   3459 			nc.rc_pos.x = dp->rd_virtx - 1;
   3460 #if 0
   3461 		if (nc.rc_pos.x < 0)
   3462 			nc.rc_pos.x = 0;
   3463 #endif
   3464 		if (nc.rc_pos.y >= dp->rd_virty)
   3465 			nc.rc_pos.y = dp->rd_virty - 1;
   3466 #if 0
   3467 		if (nc.rc_pos.y < 0)
   3468 			nc.rc_pos.y = 0;
   3469 #endif
   3470 	}
   3471 	if (flags & WSDISPLAY_CURSOR_DOCUR) {
   3472 		nc.rc_visible = wc->enable;
   3473 	}
   3474 
   3475 	dp->rd_cursor = nc;
   3476 	radeonfb_cursor_update(dp, wc->which);
   3477 
   3478 	return 0;
   3479 }
   3480 
   3481 /*
   3482  * Change the cursor shape.  Call this with the cursor locked to avoid
   3483  * flickering/tearing.
   3484  */
   3485 static void
   3486 radeonfb_cursor_shape(struct radeonfb_display *dp)
   3487 {
   3488 	uint8_t	and[512], xor[512];
   3489 	int	i, j, src, dst, pitch;
   3490 	const uint8_t	*msk = dp->rd_cursor.rc_mask;
   3491 	const uint8_t	*img = dp->rd_cursor.rc_image;
   3492 
   3493 	/*
   3494 	 * Radeon cursor data interleaves one line of AND data followed
   3495 	 * by a line of XOR data.  (Each line corresponds to a whole hardware
   3496 	 * pitch - i.e. 64 pixels or 8 bytes.)
   3497 	 *
   3498 	 * The cursor is displayed using the following table:
   3499 	 *
   3500 	 * AND	XOR	Result
   3501 	 * ----------------------
   3502 	 *  0    0	Cursor color 0
   3503 	 *  0	 1	Cursor color 1
   3504 	 *  1	 0	Transparent
   3505 	 *  1	 1	Complement of background
   3506 	 *
   3507 	 * Our masks are therefore different from what we were passed.
   3508 	 * Passed in, I'm assuming the data represents either color 0 or 1,
   3509 	 * and a mask, so the passed in table looks like:
   3510 	 *
   3511 	 * IMG	Mask	Result
   3512 	 * -----------------------
   3513 	 *  0	 0	Transparent
   3514 	 *  0	 1	Cursor color 0
   3515 	 *  1	 0	Transparent
   3516 	 *  1	 1	Cursor color 1
   3517 	 *
   3518 	 * IF mask bit == 1, AND = 0, XOR = color.
   3519 	 * IF mask bit == 0, AND = 1, XOR = 0.
   3520 	 *
   3521 	 * hence:	AND = ~(mask);	XOR = color & ~(mask);
   3522 	 */
   3523 
   3524 	pitch = ((dp->rd_cursor.rc_size.x + 7) / 8);
   3525 
   3526 	/* start by assuming all bits are transparent */
   3527 	memset(and, 0xff, 512);
   3528 	memset(xor, 0x00, 512);
   3529 
   3530 	src = 0;
   3531 	dst = 0;
   3532 	for (i = 0; i < 64; i++) {
   3533 		for (j = 0; j < 64; j += 8) {
   3534 			if ((i < dp->rd_cursor.rc_size.y) &&
   3535 			    (j < dp->rd_cursor.rc_size.x)) {
   3536 
   3537 				/* take care to leave odd bits alone */
   3538 				and[dst] &= ~(msk[src]);
   3539 				xor[dst] = img[src] & msk[src];
   3540 				src++;
   3541 			}
   3542 			dst++;
   3543 		}
   3544 	}
   3545 
   3546 	/* copy the image into place */
   3547 	for (i = 0; i < 64; i++) {
   3548 		memcpy((uint8_t *)dp->rd_curptr + (i * 16),
   3549 		    &and[i * 8], 8);
   3550 		memcpy((uint8_t *)dp->rd_curptr + (i * 16) + 8,
   3551 		    &xor[i * 8], 8);
   3552 	}
   3553 }
   3554 
   3555 static void
   3556 radeonfb_cursor_position(struct radeonfb_display *dp)
   3557 {
   3558 	struct radeonfb_softc	*sc = dp->rd_softc;
   3559 	uint32_t		offset, hvoff, hvpos;	/* registers */
   3560 	uint32_t		coff;			/* cursor offset */
   3561 	int			i, x, y, xoff, yoff, crtcoff;
   3562 
   3563 	/*
   3564 	 * XXX: this also needs to handle pan/scan
   3565 	 */
   3566 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3567 
   3568 		struct radeonfb_crtc	*rcp = &dp->rd_crtcs[i];
   3569 
   3570 		if (rcp->rc_number) {
   3571 			offset = RADEON_CUR2_OFFSET;
   3572 			hvoff = RADEON_CUR2_HORZ_VERT_OFF;
   3573 			hvpos = RADEON_CUR2_HORZ_VERT_POSN;
   3574 			crtcoff = RADEON_CRTC2_OFFSET;
   3575 		} else {
   3576 			offset = RADEON_CUR_OFFSET;
   3577 			hvoff = RADEON_CUR_HORZ_VERT_OFF;
   3578 			hvpos = RADEON_CUR_HORZ_VERT_POSN;
   3579 			crtcoff = RADEON_CRTC_OFFSET;
   3580 		}
   3581 
   3582 		x = dp->rd_cursor.rc_pos.x;
   3583 		y = dp->rd_cursor.rc_pos.y;
   3584 
   3585 		while (y < rcp->rc_yoffset) {
   3586 			rcp->rc_yoffset -= RADEON_PANINCREMENT;
   3587 		}
   3588 		while (y >= (rcp->rc_yoffset + rcp->rc_videomode.vdisplay)) {
   3589 			rcp->rc_yoffset += RADEON_PANINCREMENT;
   3590 		}
   3591 		while (x < rcp->rc_xoffset) {
   3592 			rcp->rc_xoffset -= RADEON_PANINCREMENT;
   3593 		}
   3594 		while (x >= (rcp->rc_xoffset + rcp->rc_videomode.hdisplay)) {
   3595 			rcp->rc_xoffset += RADEON_PANINCREMENT;
   3596 		}
   3597 
   3598 		/* adjust for the cursor's hotspot */
   3599 		x -= dp->rd_cursor.rc_hot.x;
   3600 		y -= dp->rd_cursor.rc_hot.y;
   3601 		xoff = yoff = 0;
   3602 
   3603 		if (x >= dp->rd_virtx)
   3604 			x = dp->rd_virtx - 1;
   3605 		if (y >= dp->rd_virty)
   3606 			y = dp->rd_virty - 1;
   3607 
   3608 		/* now adjust cursor so it is relative to viewport */
   3609 		x -= rcp->rc_xoffset;
   3610 		y -= rcp->rc_yoffset;
   3611 
   3612 		/*
   3613 		 * no need to check for fall off, because we should
   3614 		 * never move off the screen entirely!
   3615 		 */
   3616 		coff = 0;
   3617 		if (x < 0) {
   3618 			xoff = -x;
   3619 			x = 0;
   3620 		}
   3621 		if (y < 0) {
   3622 			yoff = -y;
   3623 			y = 0;
   3624 			coff = (yoff * 2) * 8;
   3625 		}
   3626 
   3627 		/* pan the display */
   3628 		PUT32(sc, crtcoff, (rcp->rc_yoffset * dp->rd_stride) +
   3629 		    rcp->rc_xoffset);
   3630 
   3631 		PUT32(sc, offset, (dp->rd_curoff + coff) | RADEON_CUR_LOCK);
   3632 		PUT32(sc, hvoff, (xoff << 16) | (yoff) | RADEON_CUR_LOCK);
   3633 		/* NB: this unlocks the cursor */
   3634 		PUT32(sc, hvpos, (x << 16) | y);
   3635 	}
   3636 }
   3637 
   3638 static void
   3639 radeonfb_cursor_visible(struct radeonfb_display *dp)
   3640 {
   3641 	int		i;
   3642 	uint32_t	gencntl, bit;
   3643 
   3644 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3645 		if (dp->rd_crtcs[i].rc_number) {
   3646 			gencntl = RADEON_CRTC2_GEN_CNTL;
   3647 			bit = RADEON_CRTC2_CUR_EN;
   3648 		} else {
   3649 			gencntl = RADEON_CRTC_GEN_CNTL;
   3650 			bit = RADEON_CRTC_CUR_EN;
   3651 		}
   3652 
   3653 		if (dp->rd_cursor.rc_visible)
   3654 			SET32(dp->rd_softc, gencntl, bit);
   3655 		else
   3656 			CLR32(dp->rd_softc, gencntl, bit);
   3657 	}
   3658 }
   3659 
   3660 static void
   3661 radeonfb_cursor_cmap(struct radeonfb_display *dp)
   3662 {
   3663 	int		i;
   3664 	uint32_t	c0reg, c1reg;
   3665 	struct radeonfb_softc	*sc = dp->rd_softc;
   3666 
   3667 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3668 		if (dp->rd_crtcs[i].rc_number) {
   3669 			c0reg = RADEON_CUR2_CLR0;
   3670 			c1reg = RADEON_CUR2_CLR1;
   3671 		} else {
   3672 			c0reg = RADEON_CUR_CLR0;
   3673 			c1reg = RADEON_CUR_CLR1;
   3674 		}
   3675 
   3676 		PUT32(sc, c0reg, dp->rd_cursor.rc_cmap[0]);
   3677 		PUT32(sc, c1reg, dp->rd_cursor.rc_cmap[1]);
   3678 	}
   3679 }
   3680 
   3681 static void
   3682 radeonfb_cursor_update(struct radeonfb_display *dp, unsigned which)
   3683 {
   3684 	struct radeonfb_softc	*sc;
   3685 	int		i;
   3686 
   3687 	sc = dp->rd_softc;
   3688 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3689 		if (dp->rd_crtcs[i].rc_number) {
   3690 			SET32(sc, RADEON_CUR2_OFFSET, RADEON_CUR_LOCK);
   3691 		} else {
   3692 			SET32(sc, RADEON_CUR_OFFSET,RADEON_CUR_LOCK);
   3693 		}
   3694 	}
   3695 
   3696 	if (which & WSDISPLAY_CURSOR_DOCMAP)
   3697 		radeonfb_cursor_cmap(dp);
   3698 
   3699 	if (which & WSDISPLAY_CURSOR_DOSHAPE)
   3700 		radeonfb_cursor_shape(dp);
   3701 
   3702 	if (which & WSDISPLAY_CURSOR_DOCUR)
   3703 		radeonfb_cursor_visible(dp);
   3704 
   3705 	/* this one is unconditional, because it updates other stuff */
   3706 	radeonfb_cursor_position(dp);
   3707 }
   3708 
   3709 static struct videomode *
   3710 radeonfb_best_refresh(struct videomode *m1, struct videomode *m2)
   3711 {
   3712 	int	r1, r2;
   3713 
   3714 	/* otherwise pick the higher refresh rate */
   3715 	r1 = DIVIDE(DIVIDE(m1->dot_clock, m1->htotal), m1->vtotal);
   3716 	r2 = DIVIDE(DIVIDE(m2->dot_clock, m2->htotal), m2->vtotal);
   3717 
   3718 	return (r1 < r2 ? m2 : m1);
   3719 }
   3720 
   3721 static const struct videomode *
   3722 radeonfb_port_mode(struct radeonfb_softc *sc, struct radeonfb_port *rp,
   3723     int x, int y)
   3724 {
   3725 	struct edid_info	*ep = &rp->rp_edid;
   3726 	struct videomode	*vmp = NULL;
   3727 	int			i;
   3728 
   3729 	if (!rp->rp_edid_valid) {
   3730 		/* fallback to safe mode */
   3731 		return radeonfb_modelookup(sc->sc_defaultmode);
   3732 	}
   3733 
   3734 	/* always choose the preferred mode first! */
   3735 	if (ep->edid_preferred_mode) {
   3736 
   3737 		/* XXX: add auto-stretching support for native mode */
   3738 
   3739 		/* this may want panning to occur, btw */
   3740 		if ((ep->edid_preferred_mode->hdisplay <= x) &&
   3741 		    (ep->edid_preferred_mode->vdisplay <= y))
   3742 			return ep->edid_preferred_mode;
   3743 	}
   3744 
   3745 	for (i = 0; i < ep->edid_nmodes; i++) {
   3746 		/*
   3747 		 * We elect to pick a resolution that is too large for
   3748 		 * the monitor than one that is too small.  This means
   3749 		 * that we will prefer to pan rather than to try to
   3750 		 * center a smaller display on a larger screen.  In
   3751 		 * practice, this shouldn't matter because if a
   3752 		 * monitor can support a larger resolution, it can
   3753 		 * probably also support the smaller.  A specific
   3754 		 * exception is fixed format panels, but hopefully
   3755 		 * they are properly dealt with by the "autostretch"
   3756 		 * logic above.
   3757 		 */
   3758 		if ((ep->edid_modes[i].hdisplay > x) ||
   3759 		    (ep->edid_modes[i].vdisplay > y)) {
   3760 			continue;
   3761 		}
   3762 
   3763 		/*
   3764 		 * at this point, the display mode is no larger than
   3765 		 * what we've requested.
   3766 		 */
   3767 		if (vmp == NULL)
   3768 			vmp = &ep->edid_modes[i];
   3769 
   3770 		/* eliminate smaller modes */
   3771 		if ((vmp->hdisplay >= ep->edid_modes[i].hdisplay) ||
   3772 		    (vmp->vdisplay >= ep->edid_modes[i].vdisplay))
   3773 			continue;
   3774 
   3775 		if ((vmp->hdisplay < ep->edid_modes[i].hdisplay) ||
   3776 		    (vmp->vdisplay < ep->edid_modes[i].vdisplay)) {
   3777 			vmp = &ep->edid_modes[i];
   3778 			continue;
   3779 		}
   3780 
   3781 		KASSERT(vmp->hdisplay == ep->edid_modes[i].hdisplay);
   3782 		KASSERT(vmp->vdisplay == ep->edid_modes[i].vdisplay);
   3783 
   3784 		vmp = radeonfb_best_refresh(vmp, &ep->edid_modes[i]);
   3785 	}
   3786 
   3787 	return (vmp ? vmp : radeonfb_modelookup(sc->sc_defaultmode));
   3788 }
   3789 
   3790 static int
   3791 radeonfb_hasres(struct videomode *list, int nlist, int x, int y)
   3792 {
   3793 	int	i;
   3794 
   3795 	for (i = 0; i < nlist; i++) {
   3796 		if ((x == list[i].hdisplay) &&
   3797 		    (y == list[i].vdisplay)) {
   3798 			return 1;
   3799 		}
   3800 	}
   3801 	return 0;
   3802 }
   3803 
   3804 static void
   3805 radeonfb_pickres(struct radeonfb_display *dp, uint16_t *x, uint16_t *y,
   3806     int pan)
   3807 {
   3808 	struct radeonfb_port	*rp;
   3809 	struct edid_info	*ep;
   3810 	int			i, j;
   3811 
   3812 	*x = 0;
   3813 	*y = 0;
   3814 
   3815 	if (pan) {
   3816 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   3817 			rp = dp->rd_crtcs[i].rc_port;
   3818 			ep = &rp->rp_edid;
   3819 			if (!rp->rp_edid_valid) {
   3820 				/* monitor not present */
   3821 				continue;
   3822 			}
   3823 
   3824 			/*
   3825 			 * For now we are ignoring "conflict" that
   3826 			 * could occur when mixing some modes like
   3827 			 * 1280x1024 and 1400x800.  It isn't clear
   3828 			 * which is better, so the first one wins.
   3829 			 */
   3830 			for (j = 0; j < ep->edid_nmodes; j++) {
   3831 				/*
   3832 				 * ignore resolutions that are too big for
   3833 				 * the radeon
   3834 				 */
   3835 				if (ep->edid_modes[j].hdisplay >
   3836 				    dp->rd_softc->sc_maxx)
   3837 					continue;
   3838 				if (ep->edid_modes[j].vdisplay >
   3839 				    dp->rd_softc->sc_maxy)
   3840 					continue;
   3841 
   3842 				/*
   3843 				 * pick largest resolution, the
   3844 				 * smaller monitor will pan
   3845 				 */
   3846 				if ((ep->edid_modes[j].hdisplay >= *x) &&
   3847 				    (ep->edid_modes[j].vdisplay >= *y)) {
   3848 					*x = ep->edid_modes[j].hdisplay;
   3849 					*y = ep->edid_modes[j].vdisplay;
   3850 				}
   3851 			}
   3852 		}
   3853 
   3854 	} else {
   3855 		struct videomode	modes[64];
   3856 		int			nmodes = 0;
   3857 		int			valid = 0;
   3858 
   3859 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   3860 			/*
   3861 			 * pick the largest resolution in common.
   3862 			 */
   3863 			rp = dp->rd_crtcs[i].rc_port;
   3864 			ep = &rp->rp_edid;
   3865 
   3866 			if (!rp->rp_edid_valid)
   3867 				continue;
   3868 
   3869 			if (!valid) {
   3870 				/*
   3871 				 * Pick the preferred mode for this port
   3872 				 * if available.
   3873 				 */
   3874 				if (ep->edid_preferred_mode) {
   3875 					struct videomode *vmp =
   3876 						ep->edid_preferred_mode;
   3877 
   3878 					if ((vmp->hdisplay <=
   3879 					     dp->rd_softc->sc_maxx) &&
   3880 					    (vmp->vdisplay <=
   3881 					     dp->rd_softc->sc_maxy))
   3882 						modes[nmodes++] = *vmp;
   3883 				} else {
   3884 
   3885 					/* initialize starting list */
   3886 					for (j = 0; j < ep->edid_nmodes; j++) {
   3887 						/*
   3888 						 * ignore resolutions that are
   3889 						 * too big for the radeon
   3890 						 */
   3891 						if (ep->edid_modes[j].hdisplay >
   3892 						    dp->rd_softc->sc_maxx)
   3893 							continue;
   3894 						if (ep->edid_modes[j].vdisplay >
   3895 						    dp->rd_softc->sc_maxy)
   3896 							continue;
   3897 
   3898 						modes[nmodes] =
   3899 							ep->edid_modes[j];
   3900 						nmodes++;
   3901 					}
   3902 				}
   3903 				valid = 1;
   3904 			} else {
   3905 				/* merge into preexisting list */
   3906 				for (j = 0; j < nmodes; j++) {
   3907 					if (!radeonfb_hasres(ep->edid_modes,
   3908 						ep->edid_nmodes,
   3909 						modes[j].hdisplay,
   3910 						modes[j].vdisplay)) {
   3911 						modes[j] = modes[nmodes];
   3912 						j--;
   3913 						nmodes--;
   3914 					}
   3915 				}
   3916 			}
   3917 		}
   3918 
   3919 		/* now we have to pick from the merged list */
   3920 		for (i = 0; i < nmodes; i++) {
   3921 			if ((modes[i].hdisplay >= *x) &&
   3922 			    (modes[i].vdisplay >= *y)) {
   3923 				*x = modes[i].hdisplay;
   3924 				*y = modes[i].vdisplay;
   3925 			}
   3926 		}
   3927 	}
   3928 
   3929 	if ((*x == 0) || (*y == 0)) {
   3930 		/* fallback to safe mode */
   3931 		*x = 640;
   3932 		*y = 480;
   3933 	}
   3934 }
   3935 
   3936 /*
   3937  * backlight levels are linear on:
   3938  * - RV200, RV250, RV280, RV350
   3939  * - but NOT on PowerBook4,3 6,3 6,5
   3940  * according to Linux' radeonfb
   3941  */
   3942 
   3943 /* Get the current backlight level for the display.  */
   3944 
   3945 static int
   3946 radeonfb_get_backlight(struct radeonfb_display *dp)
   3947 {
   3948 	int s;
   3949 	uint32_t level;
   3950 
   3951 	s = spltty();
   3952 
   3953 	level = radeonfb_get32(dp->rd_softc, RADEON_LVDS_GEN_CNTL);
   3954 	level &= RADEON_LVDS_BL_MOD_LEV_MASK;
   3955 	level >>= RADEON_LVDS_BL_MOD_LEV_SHIFT;
   3956 
   3957 	/*
   3958 	 * On some chips, we should negate the backlight level.
   3959 	 * XXX Find out on which chips.
   3960 	 */
   3961 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT)
   3962 	level = RADEONFB_BACKLIGHT_MAX - level;
   3963 
   3964 	splx(s);
   3965 
   3966 	return level;
   3967 }
   3968 
   3969 /* Set the backlight to the given level for the display.  */
   3970 static void
   3971 radeonfb_switch_backlight(struct radeonfb_display *dp, int on)
   3972 {
   3973 	if (dp->rd_bl_on == on)
   3974 		return;
   3975 	dp->rd_bl_on = on;
   3976 	radeonfb_set_backlight(dp, dp->rd_bl_level);
   3977 }
   3978 
   3979 static int
   3980 radeonfb_set_backlight(struct radeonfb_display *dp, int level)
   3981 {
   3982 	struct radeonfb_softc *sc;
   3983 	int rlevel, s;
   3984 	uint32_t lvds;
   3985 
   3986 	s = spltty();
   3987 
   3988 	dp->rd_bl_level = level;
   3989 	if (dp->rd_bl_on == 0)
   3990 		level = 0;
   3991 
   3992 	if (level < 0)
   3993 		level = 0;
   3994 	else if (level >= RADEONFB_BACKLIGHT_MAX)
   3995 		level = RADEONFB_BACKLIGHT_MAX;
   3996 
   3997 	sc = dp->rd_softc;
   3998 
   3999 	/* On some chips, we should negate the backlight level. */
   4000 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT) {
   4001 	rlevel = RADEONFB_BACKLIGHT_MAX - level;
   4002 	} else
   4003 	rlevel = level;
   4004 
   4005 	callout_stop(&dp->rd_bl_lvds_co);
   4006 	radeonfb_engine_idle(sc);
   4007 
   4008 	/*
   4009 	 * Turn off the display if the backlight is set to 0, since the
   4010 	 * display is useless without backlight anyway.
   4011 	 */
   4012 	if (level == 0)
   4013 		radeonfb_blank(dp, 1);
   4014 	else if (radeonfb_get_backlight(dp) == 0)
   4015 		radeonfb_blank(dp, 0);
   4016 
   4017 	lvds = radeonfb_get32(sc, RADEON_LVDS_GEN_CNTL);
   4018 	lvds &= ~RADEON_LVDS_DISPLAY_DIS;
   4019 	if (!(lvds & RADEON_LVDS_BLON) || !(lvds & RADEON_LVDS_ON)) {
   4020 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_DIGON;
   4021 		lvds |= RADEON_LVDS_BLON | RADEON_LVDS_EN;
   4022 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   4023 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   4024 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4025 		lvds |= RADEON_LVDS_ON;
   4026 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_BL_MOD_EN;
   4027 	} else {
   4028 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   4029 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4030 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   4031 	}
   4032 
   4033 	dp->rd_bl_lvds_val &= ~RADEON_LVDS_STATE_MASK;
   4034 	dp->rd_bl_lvds_val |= lvds & RADEON_LVDS_STATE_MASK;
   4035 	/* XXX What is the correct delay? */
   4036 	callout_schedule(&dp->rd_bl_lvds_co, 200 * hz);
   4037 
   4038 	splx(s);
   4039 
   4040 	return 0;
   4041 }
   4042 
   4043 /*
   4044  * Callout function for delayed operations on the LVDS_GEN_CNTL register.
   4045  * Set the delayed bits in the register, and clear the stored delayed
   4046  * value.
   4047  */
   4048 
   4049 static void radeonfb_lvds_callout(void *arg)
   4050 {
   4051 	struct radeonfb_display *dp = arg;
   4052 	int s;
   4053 
   4054 	s = splhigh();
   4055 
   4056 	radeonfb_mask32(dp->rd_softc, RADEON_LVDS_GEN_CNTL, ~0,
   4057 			dp->rd_bl_lvds_val);
   4058 	dp->rd_bl_lvds_val = 0;
   4059 
   4060 	splx(s);
   4061 }
   4062 
   4063 static void
   4064 radeonfb_brightness_up(device_t dev)
   4065 {
   4066 	struct radeonfb_softc *sc = device_private(dev);
   4067 	struct radeonfb_display *dp = &sc->sc_displays[0];
   4068 	int level;
   4069 
   4070 	/* we assume the main display is the first one - need a better way */
   4071 	if (sc->sc_ndisplays < 1) return;
   4072 	/* make sure pushing the hotkeys always has an effect */
   4073 	dp->rd_bl_on = 1;
   4074 	level = dp->rd_bl_level;
   4075 	level = min(RADEONFB_BACKLIGHT_MAX, level + 5);
   4076 	radeonfb_set_backlight(dp, level);
   4077 }
   4078 
   4079 static void
   4080 radeonfb_brightness_down(device_t dev)
   4081 {
   4082 	struct radeonfb_softc *sc = device_private(dev);
   4083 	struct radeonfb_display *dp = &sc->sc_displays[0];
   4084 	int level;
   4085 
   4086 	/* we assume the main display is the first one - need a better way */
   4087 	if (sc->sc_ndisplays < 1) return;
   4088 	/* make sure pushing the hotkeys always has an effect */
   4089 	dp->rd_bl_on = 1;
   4090 	level = dp->rd_bl_level;
   4091 	level = max(0, level - 5);
   4092 	radeonfb_set_backlight(dp, level);
   4093 }
   4094