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radeonfb.c revision 1.62
      1 /*	$NetBSD: radeonfb.c,v 1.62 2012/04/22 03:57:00 uebayasi 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 1.62 2012/04/22 03:57:00 uebayasi Exp $");
     74 
     75 #include <sys/param.h>
     76 #include <sys/systm.h>
     77 #include <sys/device.h>
     78 #include <sys/malloc.h>
     79 #include <sys/bus.h>
     80 #include <sys/kernel.h>
     81 #include <sys/lwp.h>
     82 #include <sys/kauth.h>
     83 
     84 #include <dev/wscons/wsdisplayvar.h>
     85 #include <dev/wscons/wsconsio.h>
     86 #include <dev/wsfont/wsfont.h>
     87 #include <dev/rasops/rasops.h>
     88 #include <dev/videomode/videomode.h>
     89 #include <dev/videomode/edidvar.h>
     90 #include <dev/wscons/wsdisplay_vconsvar.h>
     91 #include <dev/pci/wsdisplay_pci.h>
     92 #include <dev/wscons/wsdisplay_glyphcachevar.h>
     93 
     94 #include <dev/pci/pcidevs.h>
     95 #include <dev/pci/pcireg.h>
     96 #include <dev/pci/pcivar.h>
     97 #include <dev/pci/pciio.h>
     98 #include <dev/pci/radeonfbreg.h>
     99 #include <dev/pci/radeonfbvar.h>
    100 #include "opt_radeonfb.h"
    101 #include "opt_vcons.h"
    102 
    103 #ifdef RADEONFB_DEPTH_32
    104 #define RADEONFB_DEFAULT_DEPTH 32
    105 #else
    106 #define RADEONFB_DEFAULT_DEPTH 8
    107 #endif
    108 
    109 static int radeonfb_match(device_t, cfdata_t, void *);
    110 static void radeonfb_attach(device_t, device_t, void *);
    111 static int radeonfb_ioctl(void *, void *, unsigned long, void *, int,
    112     struct lwp *);
    113 static paddr_t radeonfb_mmap(void *, void *, off_t, int);
    114 static int radeonfb_scratch_test(struct radeonfb_softc *, int, uint32_t);
    115 static void radeonfb_loadbios(struct radeonfb_softc *,
    116     const struct pci_attach_args *);
    117 
    118 static uintmax_t radeonfb_getprop_num(struct radeonfb_softc *, const char *,
    119     uintmax_t);
    120 static int radeonfb_getclocks(struct radeonfb_softc *);
    121 static int radeonfb_gettmds(struct radeonfb_softc *);
    122 static int radeonfb_calc_dividers(struct radeonfb_softc *, uint32_t,
    123     uint32_t *, uint32_t *);
    124 static int radeonfb_getconnectors(struct radeonfb_softc *);
    125 static const struct videomode *radeonfb_modelookup(const char *);
    126 static void radeonfb_init_screen(void *, struct vcons_screen *, int, long *);
    127 static void radeonfb_pllwriteupdate(struct radeonfb_softc *, int);
    128 static void radeonfb_pllwaitatomicread(struct radeonfb_softc *, int);
    129 static void radeonfb_program_vclk(struct radeonfb_softc *, int, int);
    130 static void radeonfb_modeswitch(struct radeonfb_display *);
    131 static void radeonfb_setcrtc(struct radeonfb_display *, int);
    132 static void radeonfb_init_misc(struct radeonfb_softc *);
    133 static void radeonfb_set_fbloc(struct radeonfb_softc *);
    134 static void radeonfb_init_palette(struct radeonfb_softc *, int);
    135 static void radeonfb_r300cg_workaround(struct radeonfb_softc *);
    136 
    137 static int radeonfb_isblank(struct radeonfb_display *);
    138 static void radeonfb_blank(struct radeonfb_display *, int);
    139 static int radeonfb_set_cursor(struct radeonfb_display *,
    140     struct wsdisplay_cursor *);
    141 static int radeonfb_set_curpos(struct radeonfb_display *,
    142     struct wsdisplay_curpos *);
    143 
    144 /* acceleration support */
    145 static void  radeonfb_rectfill(struct radeonfb_display *, int dstx, int dsty,
    146     int width, int height, uint32_t color);
    147 static void radeonfb_bitblt(void *, int srcx, int srcy,
    148     int dstx, int dsty, int width, int height, int rop);
    149 
    150 /* hw cursor support */
    151 static void radeonfb_cursor_cmap(struct radeonfb_display *);
    152 static void radeonfb_cursor_shape(struct radeonfb_display *);
    153 static void radeonfb_cursor_position(struct radeonfb_display *);
    154 static void radeonfb_cursor_visible(struct radeonfb_display *);
    155 static void radeonfb_cursor_update(struct radeonfb_display *, unsigned);
    156 
    157 static inline void radeonfb_wait_fifo(struct radeonfb_softc *, int);
    158 static void radeonfb_engine_idle(struct radeonfb_softc *);
    159 static void radeonfb_engine_flush(struct radeonfb_softc *);
    160 static void radeonfb_engine_reset(struct radeonfb_softc *);
    161 static void radeonfb_engine_init(struct radeonfb_display *);
    162 static inline void radeonfb_unclip(struct radeonfb_softc *);
    163 
    164 static void radeonfb_eraserows(void *, int, int, long);
    165 static void radeonfb_erasecols(void *, int, int, int, long);
    166 static void radeonfb_copyrows(void *, int, int, int);
    167 static void radeonfb_copycols(void *, int, int, int, int);
    168 static void radeonfb_cursor(void *, int, int, int);
    169 static void radeonfb_putchar(void *, int, int, unsigned, long);
    170 static void radeonfb_putchar_aa32(void *, int, int, unsigned, long);
    171 static void radeonfb_putchar_aa8(void *, int, int, unsigned, long);
    172 static void radeonfb_putchar_wrapper(void *, int, int, unsigned, long);
    173 
    174 static int radeonfb_set_backlight(struct radeonfb_display *, int);
    175 static int radeonfb_get_backlight(struct radeonfb_display *);
    176 static void radeonfb_switch_backlight(struct radeonfb_display *, int);
    177 static void radeonfb_lvds_callout(void *);
    178 
    179 static void radeonfb_brightness_up(device_t);
    180 static void radeonfb_brightness_down(device_t);
    181 
    182 static struct videomode *radeonfb_best_refresh(struct videomode *,
    183     struct videomode *);
    184 static void radeonfb_pickres(struct radeonfb_display *, uint16_t *,
    185     uint16_t *, int);
    186 static const struct videomode *radeonfb_port_mode(struct radeonfb_softc *,
    187     struct radeonfb_port *, int, int);
    188 
    189 static int radeonfb_drm_print(void *, const char *);
    190 
    191 #ifdef	RADEONFB_DEBUG
    192 int	radeon_debug = 1;
    193 #define	DPRINTF(x)	\
    194 	if (radeon_debug) printf x
    195 #define	PRINTREG(r)	DPRINTF((#r " = %08x\n", GET32(sc, r)))
    196 #define	PRINTPLL(r)	DPRINTF((#r " = %08x\n", GETPLL(sc, r)))
    197 #else
    198 #define	DPRINTF(x)
    199 #define	PRINTREG(r)
    200 #define	PRINTPLL(r)
    201 #endif
    202 
    203 #define	ROUNDUP(x,y)	(((x) + ((y) - 1)) & ~((y) - 1))
    204 
    205 #ifndef	RADEON_DEFAULT_MODE
    206 /* any reasonably modern display should handle this */
    207 #define	RADEON_DEFAULT_MODE	"1024x768x60"
    208 #endif
    209 
    210 extern const u_char rasops_cmap[768];
    211 
    212 const char	*radeonfb_default_mode = RADEON_DEFAULT_MODE;
    213 
    214 static struct {
    215 	int		size;		/* minimum memory size (MB) */
    216 	int		maxx;		/* maximum x dimension */
    217 	int		maxy;		/* maximum y dimension */
    218 	int		maxbpp;		/* maximum bpp */
    219 	int		maxdisp;	/* maximum logical display count */
    220 } radeonfb_limits[] = {
    221 	{ 32,	2048, 1536, 32, 2 },
    222 	{ 16,	1600, 1200, 32, 2 },
    223 	{ 8,	1600, 1200, 32, 1 },
    224 	{ 0,	0, 0, 0, 0 },
    225 };
    226 
    227 static struct wsscreen_descr radeonfb_stdscreen = {
    228 	"fb",		/* name */
    229 	0, 0,		/* ncols, nrows */
    230 	NULL,		/* textops */
    231 	8, 16,		/* fontwidth, fontheight */
    232 	WSSCREEN_WSCOLORS, /* capabilities */
    233 	0,		/* modecookie */
    234 };
    235 
    236 struct wsdisplay_accessops radeonfb_accessops = {
    237 	radeonfb_ioctl,
    238 	radeonfb_mmap,
    239 	NULL,		/* vcons_alloc_screen */
    240 	NULL,		/* vcons_free_screen */
    241 	NULL,		/* vcons_show_screen */
    242 	NULL,		/* load_font */
    243 	NULL,		/* pollc */
    244 	NULL,		/* scroll */
    245 };
    246 
    247 static struct {
    248 	uint16_t	devid;
    249 	uint16_t	family;
    250 	uint16_t	flags;
    251 } radeonfb_devices[] =
    252 {
    253 	/* R100 family */
    254 	{ PCI_PRODUCT_ATI_RADEON_R100_QD,	RADEON_R100, 0 },
    255 	{ PCI_PRODUCT_ATI_RADEON_R100_QE,	RADEON_R100, 0 },
    256 	{ PCI_PRODUCT_ATI_RADEON_R100_QF,	RADEON_R100, 0 },
    257 	{ PCI_PRODUCT_ATI_RADEON_R100_QG,	RADEON_R100, 0 },
    258 
    259 	/* RV100 family */
    260 	{ PCI_PRODUCT_ATI_RADEON_RV100_LY,	RADEON_RV100, RFB_MOB },
    261 	{ PCI_PRODUCT_ATI_RADEON_RV100_LZ,	RADEON_RV100, RFB_MOB },
    262 	{ PCI_PRODUCT_ATI_RADEON_RV100_QY,	RADEON_RV100, 0 },
    263 	{ PCI_PRODUCT_ATI_RADEON_RV100_QZ,	RADEON_RV100, 0 },
    264 
    265 	/* RS100 family */
    266 	{ PCI_PRODUCT_ATI_RADEON_RS100_4136,	RADEON_RS100, 0 },
    267 	{ PCI_PRODUCT_ATI_RADEON_RS100_4336,	RADEON_RS100, RFB_MOB },
    268 
    269 	/* RS200/RS250 family */
    270 	{ PCI_PRODUCT_ATI_RADEON_RS200_4337,	RADEON_RS200, RFB_MOB },
    271 	{ PCI_PRODUCT_ATI_RADEON_RS200_A7,	RADEON_RS200, 0 },
    272 	{ PCI_PRODUCT_ATI_RADEON_RS250_B7,	RADEON_RS200, RFB_MOB },
    273 	{ PCI_PRODUCT_ATI_RADEON_RS250_D7,	RADEON_RS200, 0 },
    274 
    275 	/* R200 family */
    276 	/* add more R200 products? , 5148 */
    277 	{ PCI_PRODUCT_ATI_RADEON_R200_BB,	RADEON_R200, 0 },
    278 	{ PCI_PRODUCT_ATI_RADEON_R200_BC,	RADEON_R200, 0 },
    279 	{ PCI_PRODUCT_ATI_RADEON_R200_QH,	RADEON_R200, 0 },
    280 	{ PCI_PRODUCT_ATI_RADEON_R200_QL,	RADEON_R200, 0 },
    281 	{ PCI_PRODUCT_ATI_RADEON_R200_QM,	RADEON_R200, 0 },
    282 
    283 	/* RV200 family */
    284 	{ PCI_PRODUCT_ATI_RADEON_RV200_LW,	RADEON_RV200, RFB_MOB },
    285 	{ PCI_PRODUCT_ATI_RADEON_RV200_LX,	RADEON_RV200, RFB_MOB },
    286 	{ PCI_PRODUCT_ATI_RADEON_RV200_QW,	RADEON_RV200, 0 },
    287 	{ PCI_PRODUCT_ATI_RADEON_RV200_QX,	RADEON_RV200, 0 },
    288 
    289 	/* RV250 family */
    290 	{ PCI_PRODUCT_ATI_RADEON_RV250_4966,	RADEON_RV250, 0 },
    291 	{ PCI_PRODUCT_ATI_RADEON_RV250_4967,	RADEON_RV250, 0 },
    292 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C64,	RADEON_RV250, RFB_MOB },
    293 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C66,	RADEON_RV250, RFB_MOB },
    294 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C67,	RADEON_RV250, RFB_MOB },
    295 
    296 	/* RS300 family */
    297 	{ PCI_PRODUCT_ATI_RADEON_RS300_X5,	RADEON_RS300, 0 },
    298 	{ PCI_PRODUCT_ATI_RADEON_RS300_X4,	RADEON_RS300, 0 },
    299 	{ PCI_PRODUCT_ATI_RADEON_RS300_7834,	RADEON_RS300, 0 },
    300 	{ PCI_PRODUCT_ATI_RADEON_RS300_7835,	RADEON_RS300, RFB_MOB },
    301 
    302 	/* RV280 family */
    303 	{ PCI_PRODUCT_ATI_RADEON_RV280_5960,	RADEON_RV280, 0 },
    304 	{ PCI_PRODUCT_ATI_RADEON_RV280_5961,	RADEON_RV280, 0 },
    305 	{ PCI_PRODUCT_ATI_RADEON_RV280_5962,	RADEON_RV280, 0 },
    306 	{ PCI_PRODUCT_ATI_RADEON_RV280_5963,	RADEON_RV280, 0 },
    307 	{ PCI_PRODUCT_ATI_RADEON_RV280_5964,	RADEON_RV280, 0 },
    308 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C61,	RADEON_RV280, RFB_MOB },
    309 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C63,	RADEON_RV280, RFB_MOB },
    310 
    311 	/* R300 family */
    312 	{ PCI_PRODUCT_ATI_RADEON_R300_AD,	RADEON_R300, 0 },
    313 	{ PCI_PRODUCT_ATI_RADEON_R300_AE,	RADEON_R300, 0 },
    314 	{ PCI_PRODUCT_ATI_RADEON_R300_AF,	RADEON_R300, 0 },
    315 	{ PCI_PRODUCT_ATI_RADEON_R300_AG,	RADEON_R300, 0 },
    316 	{ PCI_PRODUCT_ATI_RADEON_R300_ND,	RADEON_R300, 0 },
    317 	{ PCI_PRODUCT_ATI_RADEON_R300_NE,	RADEON_R300, 0 },
    318 	{ PCI_PRODUCT_ATI_RADEON_R300_NF,	RADEON_R300, 0 },
    319 	{ PCI_PRODUCT_ATI_RADEON_R300_NG,	RADEON_R300, 0 },
    320 
    321 	/* RV350/RV360 family */
    322 	{ PCI_PRODUCT_ATI_RADEON_RV350_AP,	RADEON_RV350, 0 },
    323 	{ PCI_PRODUCT_ATI_RADEON_RV350_AQ,	RADEON_RV350, 0 },
    324 	{ PCI_PRODUCT_ATI_RADEON_RV360_AR,	RADEON_RV350, 0 },
    325 	{ PCI_PRODUCT_ATI_RADEON_RV350_AS,	RADEON_RV350, 0 },
    326 	{ PCI_PRODUCT_ATI_RADEON_RV350_AT,	RADEON_RV350, 0 },
    327 	{ PCI_PRODUCT_ATI_RADEON_RV350_AV,	RADEON_RV350, 0 },
    328 	{ PCI_PRODUCT_ATI_RADEON_RV350_NP,	RADEON_RV350, RFB_MOB },
    329 	{ PCI_PRODUCT_ATI_RADEON_RV350_NQ,	RADEON_RV350, RFB_MOB },
    330 	{ PCI_PRODUCT_ATI_RADEON_RV350_NR,	RADEON_RV350, RFB_MOB },
    331 	{ PCI_PRODUCT_ATI_RADEON_RV350_NS,	RADEON_RV350, RFB_MOB },
    332 	{ PCI_PRODUCT_ATI_RADEON_RV350_NT,	RADEON_RV350, RFB_MOB },
    333 	{ PCI_PRODUCT_ATI_RADEON_RV350_NV,	RADEON_RV350, RFB_MOB },
    334 
    335 	/* R350/R360 family */
    336 	{ PCI_PRODUCT_ATI_RADEON_R350_AH,	RADEON_R350, 0 },
    337 	{ PCI_PRODUCT_ATI_RADEON_R350_AI,	RADEON_R350, 0 },
    338 	{ PCI_PRODUCT_ATI_RADEON_R350_AJ,	RADEON_R350, 0 },
    339 	{ PCI_PRODUCT_ATI_RADEON_R350_AK,	RADEON_R350, 0 },
    340 	{ PCI_PRODUCT_ATI_RADEON_R350_NH,	RADEON_R350, 0 },
    341 	{ PCI_PRODUCT_ATI_RADEON_R350_NI,	RADEON_R350, 0 },
    342 	{ PCI_PRODUCT_ATI_RADEON_R350_NK,	RADEON_R350, 0 },
    343 	{ PCI_PRODUCT_ATI_RADEON_R360_NJ,	RADEON_R350, 0 },
    344 
    345 	/* RV380/RV370 family */
    346 	{ PCI_PRODUCT_ATI_RADEON_RV380_3150,	RADEON_RV380, RFB_MOB },
    347 	{ PCI_PRODUCT_ATI_RADEON_RV380_3154,	RADEON_RV380, RFB_MOB },
    348 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E50,	RADEON_RV380, 0 },
    349 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E54,	RADEON_RV380, 0 },
    350 	{ PCI_PRODUCT_ATI_RADEON_RV370_5460,	RADEON_RV380, RFB_MOB },
    351 	{ PCI_PRODUCT_ATI_RADEON_RV370_5464,	RADEON_RV380, RFB_MOB },
    352 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B60,	RADEON_RV380, 0 },
    353 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B64,	RADEON_RV380, 0 },
    354 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B65,	RADEON_RV380, 0 },
    355 
    356 	/* R420/R423 family */
    357 	{ PCI_PRODUCT_ATI_RADEON_R420_JH,	RADEON_R420, 0 },
    358 	{ PCI_PRODUCT_ATI_RADEON_R420_JI,	RADEON_R420, 0 },
    359 	{ PCI_PRODUCT_ATI_RADEON_R420_JJ,	RADEON_R420, 0 },
    360 	{ PCI_PRODUCT_ATI_RADEON_R420_JK,	RADEON_R420, 0 },
    361 	{ PCI_PRODUCT_ATI_RADEON_R420_JL,	RADEON_R420, 0 },
    362 	{ PCI_PRODUCT_ATI_RADEON_R420_JM,	RADEON_R420, 0 },
    363 	{ PCI_PRODUCT_ATI_RADEON_R420_JN,	RADEON_R420, RFB_MOB },
    364 	{ PCI_PRODUCT_ATI_RADEON_R420_JP,	RADEON_R420, 0 },
    365 	{ PCI_PRODUCT_ATI_RADEON_R423_UH,	RADEON_R420, 0 },
    366 	{ PCI_PRODUCT_ATI_RADEON_R423_UI,	RADEON_R420, 0 },
    367 	{ PCI_PRODUCT_ATI_RADEON_R423_UJ,	RADEON_R420, 0 },
    368 	{ PCI_PRODUCT_ATI_RADEON_R423_UK,	RADEON_R420, 0 },
    369 	{ PCI_PRODUCT_ATI_RADEON_R423_UQ,	RADEON_R420, 0 },
    370 	{ PCI_PRODUCT_ATI_RADEON_R423_UR,	RADEON_R420, 0 },
    371 	{ PCI_PRODUCT_ATI_RADEON_R423_UT,	RADEON_R420, 0 },
    372 	{ PCI_PRODUCT_ATI_RADEON_R423_5D57,	RADEON_R420, 0 },
    373 	{ PCI_PRODUCT_ATI_RADEON_R430_554F,	RADEON_R420, 0 },
    374 
    375 	{ 0, 0, 0 }
    376 };
    377 
    378 static struct {
    379 	int divider;
    380 	int mask;
    381 } radeonfb_dividers[] = {
    382 	{  1, 0 },
    383 	{  2, 1 },
    384 	{  3, 4 },
    385 	{  4, 2 },
    386 	{  6, 6 },
    387 	{  8, 3 },
    388 	{ 12, 7 },
    389 	{  0, 0 }
    390 };
    391 
    392 /*
    393  * This table taken from X11.
    394  */
    395 static const struct {
    396 	int			family;
    397 	struct radeon_tmds_pll	plls[4];
    398 } radeonfb_tmds_pll[] = {
    399 	{ RADEON_R100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    400 	{ RADEON_RV100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    401 	{ RADEON_RS100, {{0, 0}}},
    402 	{ RADEON_RV200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    403 	{ RADEON_RS200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    404 	{ RADEON_R200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    405 	{ RADEON_RV250,	{{15500, 0x81b}, {-1, 0x83f}}},
    406 	{ RADEON_RS300, {{0, 0}}},
    407 	{ RADEON_RV280,	{{13000, 0x400f4}, {15000, 0x400f7}}},
    408 	{ RADEON_R300,	{{-1, 0xb01cb}}},
    409 	{ RADEON_R350,	{{-1, 0xb01cb}}},
    410 	{ RADEON_RV350,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    411 	{ RADEON_RV380,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    412 	{ RADEON_R420,	{{-1, 0xb01cb}}},
    413 };
    414 
    415 #define RADEONFB_BACKLIGHT_MAX    255  /* Maximum backlight level. */
    416 
    417 
    418 CFATTACH_DECL_NEW(radeonfb, sizeof (struct radeonfb_softc),
    419     radeonfb_match, radeonfb_attach, NULL, NULL);
    420 
    421 static int
    422 radeonfb_match(device_t parent, cfdata_t match, void *aux)
    423 {
    424 	const struct pci_attach_args	*pa = aux;
    425 	int			i;
    426 
    427 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_ATI)
    428 		return 0;
    429 
    430 	for (i = 0; radeonfb_devices[i].devid; i++) {
    431 		if (PCI_PRODUCT(pa->pa_id) == radeonfb_devices[i].devid)
    432 			return 100;	/* high to defeat VGA/VESA */
    433 	}
    434 
    435 	return 0;
    436 }
    437 
    438 static void
    439 radeonfb_attach(device_t parent, device_t dev, void *aux)
    440 {
    441 	struct radeonfb_softc	*sc = device_private(dev);
    442 	const struct pci_attach_args	*pa = aux;
    443 	const char		*mptr;
    444 	bus_size_t		bsz;
    445 	pcireg_t		screg;
    446 	int			i, j, fg, bg, ul, flags;
    447 	uint32_t		v;
    448 
    449 	sc->sc_dev = dev;
    450 	sc->sc_id = pa->pa_id;
    451 	for (i = 0; radeonfb_devices[i].devid; i++) {
    452 		if (PCI_PRODUCT(sc->sc_id) == radeonfb_devices[i].devid)
    453 			break;
    454 	}
    455 
    456 	pci_aprint_devinfo(pa, NULL);
    457 
    458 	DPRINTF((prop_dictionary_externalize(device_properties(dev))));
    459 
    460 	KASSERT(radeonfb_devices[i].devid != 0);
    461 	sc->sc_pt = pa->pa_tag;
    462 	sc->sc_iot = pa->pa_iot;
    463 	sc->sc_pc = pa->pa_pc;
    464 	sc->sc_family = radeonfb_devices[i].family;
    465 	sc->sc_flags = radeonfb_devices[i].flags;
    466 
    467 	/* enable memory and IO access */
    468 	screg = pci_conf_read(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG);
    469 	screg |= PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE;
    470 	pci_conf_write(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG, screg);
    471 
    472 	/*
    473 	 * Some flags are general to entire chip families, and rather
    474 	 * than clutter up the table with them, we go ahead and set
    475 	 * them here.
    476 	 */
    477 	switch (sc->sc_family) {
    478 	case RADEON_RS100:
    479 	case RADEON_RS200:
    480 		sc->sc_flags |= RFB_IGP | RFB_RV100;
    481 		break;
    482 
    483 	case RADEON_RV100:
    484 	case RADEON_RV200:
    485 	case RADEON_RV250:
    486 	case RADEON_RV280:
    487 		sc->sc_flags |= RFB_RV100;
    488 		break;
    489 
    490 	case RADEON_RS300:
    491 		sc->sc_flags |= RFB_SDAC | RFB_IGP | RFB_RV100;
    492 		break;
    493 
    494 	case RADEON_R300:
    495 	case RADEON_RV350:
    496 	case RADEON_R350:
    497 	case RADEON_RV380:
    498 	case RADEON_R420:
    499 		/* newer chips */
    500 		sc->sc_flags |= RFB_R300;
    501 		break;
    502 
    503 	case RADEON_R100:
    504 		sc->sc_flags |= RFB_NCRTC2;
    505 		break;
    506 	}
    507 
    508 	if ((sc->sc_family == RADEON_RV200) ||
    509 	    (sc->sc_family == RADEON_RV250) ||
    510 	    (sc->sc_family == RADEON_RV280) ||
    511 	    (sc->sc_family == RADEON_RV350)) {
    512 		bool inverted = 0;
    513 		/* backlight level is linear */
    514 		DPRINTF(("found RV* chip, backlight is supposedly linear\n"));
    515 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
    516 		    "backlight_level_reverted", &inverted);
    517 		if (inverted) {
    518 			DPRINTF(("nope, it's inverted\n"));
    519 			sc->sc_flags |= RFB_INV_BLIGHT;
    520 		}
    521 	} else
    522 		sc->sc_flags |= RFB_INV_BLIGHT;
    523 
    524 	/*
    525 	 * XXX: to support true multihead, this must change.
    526 	 */
    527 	sc->sc_ndisplays = 1;
    528 
    529 	/* XXX: */
    530 	if (!HAS_CRTC2(sc)) {
    531 		sc->sc_ndisplays = 1;
    532 	}
    533 
    534 	if (pci_mapreg_map(pa, RADEON_MAPREG_MMIO, PCI_MAPREG_TYPE_MEM,	0,
    535 		&sc->sc_regt, &sc->sc_regh, &sc->sc_regaddr,
    536 		&sc->sc_regsz) != 0) {
    537 		aprint_error("%s: unable to map registers!\n", XNAME(sc));
    538 		goto error;
    539 	}
    540 
    541 	if (pci_mapreg_info(sc->sc_pc, sc->sc_pt, PCI_MAPREG_ROM,
    542 	     PCI_MAPREG_TYPE_ROM, &sc->sc_romaddr, &sc->sc_romsz, &flags) != 0)
    543 	{
    544 		aprint_error("%s: unable to find ROM!\n", XNAME(sc));
    545 		goto error;
    546 	}
    547 	sc->sc_romt = sc->sc_memt;
    548 
    549 	/* scratch register test... */
    550 	if (radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0x55555555) ||
    551 	    radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0xaaaaaaaa)) {
    552 		aprint_error("%s: scratch register test failed!\n", XNAME(sc));
    553 		goto error;
    554 	}
    555 
    556 	PRINTREG(RADEON_BIOS_4_SCRATCH);
    557 	PRINTREG(RADEON_FP_GEN_CNTL);
    558 	sc->sc_fp_gen_cntl = GET32(sc, RADEON_FP_GEN_CNTL);
    559 	PRINTREG(RADEON_FP2_GEN_CNTL);
    560 	PRINTREG(RADEON_TMDS_CNTL);
    561 	PRINTREG(RADEON_TMDS_TRANSMITTER_CNTL);
    562 	PRINTREG(RADEON_TMDS_PLL_CNTL);
    563 	PRINTREG(RADEON_LVDS_GEN_CNTL);
    564 	PRINTREG(RADEON_FP_HORZ_STRETCH);
    565 	PRINTREG(RADEON_FP_VERT_STRETCH);
    566 
    567 	/* XXX: RV100 specific */
    568 	PUT32(sc, RADEON_TMDS_PLL_CNTL, 0xa27);
    569 
    570 	PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    571 	    RADEON_TMDS_TRANSMITTER_PLLEN,
    572 	    RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST);
    573 
    574 	radeonfb_i2c_init(sc);
    575 
    576 	radeonfb_loadbios(sc, pa);
    577 
    578 #ifdef	RADEONFB_BIOS_INIT
    579 	if (radeonfb_bios_init(sc)) {
    580 		aprint_error("%s: BIOS inititialization failed\n", XNAME(sc));
    581 	}
    582 #endif
    583 
    584 	if (radeonfb_getclocks(sc)) {
    585 		aprint_error("%s: Unable to get reference clocks from BIOS\n",
    586 		    XNAME(sc));
    587 		goto error;
    588 	}
    589 
    590 	if (radeonfb_gettmds(sc)) {
    591 		aprint_error("%s: Unable to identify TMDS PLL settings\n",
    592 		    XNAME(sc));
    593 		goto error;
    594 	}
    595 
    596 	aprint_verbose("%s: refclk = %d.%03d MHz, refdiv = %d "
    597 	    "minpll = %d, maxpll = %d\n", XNAME(sc),
    598 	    (int)sc->sc_refclk / 1000, (int)sc->sc_refclk % 1000,
    599 	    (int)sc->sc_refdiv, (int)sc->sc_minpll, (int)sc->sc_maxpll);
    600 
    601 	radeonfb_getconnectors(sc);
    602 
    603 	radeonfb_set_fbloc(sc);
    604 
    605 	for (i = 0; radeonfb_limits[i].size; i++) {
    606 		if (sc->sc_memsz >= radeonfb_limits[i].size) {
    607 			sc->sc_maxx = radeonfb_limits[i].maxx;
    608 			sc->sc_maxy = radeonfb_limits[i].maxy;
    609 			sc->sc_maxbpp = radeonfb_limits[i].maxbpp;
    610 			/* framebuffer offset, start at a 4K page */
    611 			sc->sc_fboffset = sc->sc_memsz /
    612 			    radeonfb_limits[i].maxdisp;
    613 			/*
    614 			 * we use the fbsize to figure out where we can store
    615 			 * things like cursor data.
    616 			 */
    617 			sc->sc_fbsize =
    618 			    ROUNDUP(ROUNDUP(sc->sc_maxx * sc->sc_maxbpp / 8 ,
    619 					RADEON_STRIDEALIGN) * sc->sc_maxy,
    620 				4096);
    621 			break;
    622 		}
    623 	}
    624 
    625 
    626 	radeonfb_init_misc(sc);
    627 	radeonfb_init_palette(sc, 0);
    628 	if (HAS_CRTC2(sc))
    629 		radeonfb_init_palette(sc, 1);
    630 
    631 	/* program the DAC wirings */
    632 	for (i = 0; i < (HAS_CRTC2(sc) ? 2 : 1); i++) {
    633 		switch (sc->sc_ports[i].rp_dac_type) {
    634 		case RADEON_DAC_PRIMARY:
    635 			PATCH32(sc, RADEON_DAC_CNTL2,
    636 			    i ? RADEON_DAC2_DAC_CLK_SEL : 0,
    637 			    ~RADEON_DAC2_DAC_CLK_SEL);
    638 			break;
    639 		case RADEON_DAC_TVDAC:
    640 			/* we always use the TVDAC to drive a secondary analog
    641 			 * CRT for now.  if we ever support TV-out this will
    642 			 * have to change.
    643 			 */
    644 			SET32(sc, RADEON_DAC_CNTL2,
    645 			    RADEON_DAC2_DAC2_CLK_SEL);
    646 			PATCH32(sc, RADEON_DISP_HW_DEBUG,
    647 			    i ? 0 : RADEON_CRT2_DISP1_SEL,
    648 			    ~RADEON_CRT2_DISP1_SEL);
    649 			break;
    650 		}
    651 	}
    652 	PRINTREG(RADEON_DAC_CNTL2);
    653 	PRINTREG(RADEON_DISP_HW_DEBUG);
    654 
    655 	/* other DAC programming */
    656 	v = GET32(sc, RADEON_DAC_CNTL);
    657 	v &= (RADEON_DAC_RANGE_CNTL_MASK | RADEON_DAC_BLANKING);
    658 	v |= RADEON_DAC_MASK_ALL | RADEON_DAC_8BIT_EN;
    659 	PUT32(sc, RADEON_DAC_CNTL, v);
    660 	PRINTREG(RADEON_DAC_CNTL);
    661 
    662 	/* XXX: this may need more investigation */
    663 	PUT32(sc, RADEON_TV_DAC_CNTL, 0x00280203);
    664 	PRINTREG(RADEON_TV_DAC_CNTL);
    665 
    666 	/* enable TMDS */
    667 	SET32(sc, RADEON_FP_GEN_CNTL,
    668 	    RADEON_FP_TMDS_EN |
    669 		RADEON_FP_CRTC_DONT_SHADOW_VPAR |
    670 		RADEON_FP_CRTC_DONT_SHADOW_HEND);
    671 	/*
    672 	 * XXX
    673 	 * no idea why this is necessary - if I do not clear this bit on my
    674 	 * iBook G4 the screen remains black, even though it's already clear.
    675 	 * It needs to be set on my Sun XVR-100 for the DVI port to work
    676 	 */
    677 
    678 	if (sc->sc_fp_gen_cntl & RADEON_FP_SEL_CRTC2) {
    679 		SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    680 	} else
    681 		CLR32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    682 
    683 	if (HAS_CRTC2(sc))
    684 		SET32(sc, RADEON_FP2_GEN_CNTL, RADEON_FP2_SRC_SEL_CRTC2);
    685 
    686 	/*
    687 	 * we use bus_space_map instead of pci_mapreg, because we don't
    688 	 * need the full aperature space.  no point in wasting virtual
    689 	 * address space we don't intend to use, right?
    690 	 */
    691 	if ((sc->sc_memsz < (4096 * 1024)) ||
    692 	    (pci_mapreg_info(sc->sc_pc, sc->sc_pt, RADEON_MAPREG_VRAM,
    693 		PCI_MAPREG_TYPE_MEM, &sc->sc_memaddr, &bsz, NULL) != 0) ||
    694 	    (bsz < sc->sc_memsz)) {
    695 		sc->sc_memsz = 0;
    696 		aprint_error("%s: Bad frame buffer configuration\n",
    697 		    XNAME(sc));
    698 		goto error;
    699 	}
    700 
    701 	/* 64 MB should be enough -- more just wastes map entries */
    702 	if (sc->sc_memsz > (64 << 20))
    703 		sc->sc_memsz = (64 << 20);
    704 
    705 	sc->sc_memt = pa->pa_memt;
    706 	if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
    707 		BUS_SPACE_MAP_LINEAR, &sc->sc_memh) != 0) {
    708 		sc->sc_memsz = 0;
    709 		aprint_error("%s: Unable to map frame buffer\n", XNAME(sc));
    710 		goto error;
    711 	}
    712 
    713 	aprint_normal("%s: %d MB aperture at 0x%08x, "
    714 	    "%d KB registers at 0x%08x\n", XNAME(sc),
    715 	    (int)sc->sc_memsz >> 20, (unsigned)sc->sc_memaddr,
    716 	    (int)sc->sc_regsz >> 10, (unsigned)sc->sc_regaddr);
    717 
    718 	/* setup default video mode from devprop (allows PROM override) */
    719 	sc->sc_defaultmode = radeonfb_default_mode;
    720 	if (prop_dictionary_get_cstring_nocopy(device_properties(sc->sc_dev),
    721 	    "videomode", &mptr)) {
    722 
    723 		strncpy(sc->sc_modebuf, mptr, sizeof(sc->sc_modebuf));
    724 		sc->sc_defaultmode = sc->sc_modebuf;
    725 	}
    726 
    727 	/* initialize some basic display parameters */
    728 	for (i = 0; i < sc->sc_ndisplays; i++) {
    729 		struct radeonfb_display *dp = &sc->sc_displays[i];
    730 		struct rasops_info *ri;
    731 		long defattr;
    732 		struct wsemuldisplaydev_attach_args aa;
    733 
    734 		/*
    735 		 * Figure out how many "displays" (desktops) we are going to
    736 		 * support.  If more than one, then each CRTC gets its own
    737 		 * programming.
    738 		 *
    739 		 * XXX: this code needs to change to support mergedfb.
    740 		 * XXX: would be nice to allow this to be overridden
    741 		 */
    742 		if (HAS_CRTC2(sc) && (sc->sc_ndisplays == 1)) {
    743 			DPRINTF(("dual crtcs!\n"));
    744 			dp->rd_ncrtcs = 2;
    745 			dp->rd_crtcs[0].rc_number = 0;
    746 			dp->rd_crtcs[1].rc_number = 1;
    747 		} else {
    748 			dp->rd_ncrtcs = 1;
    749 			dp->rd_crtcs[0].rc_number = i;
    750 		}
    751 
    752 		/* set up port pointer */
    753 		for (j = 0; j < dp->rd_ncrtcs; j++) {
    754 			dp->rd_crtcs[j].rc_port =
    755 			    &sc->sc_ports[dp->rd_crtcs[j].rc_number];
    756 		}
    757 
    758 		dp->rd_softc = sc;
    759 		dp->rd_wsmode = WSDISPLAYIO_MODE_EMUL;
    760 		dp->rd_bg = WS_DEFAULT_BG;
    761 		dp->rd_bpp = RADEONFB_DEFAULT_DEPTH;	/* XXX */
    762 
    763 		/* for text mode, we pick a resolution that won't
    764 		 * require panning */
    765 		radeonfb_pickres(dp, &dp->rd_virtx, &dp->rd_virty, 0);
    766 
    767 		aprint_normal("%s: display %d: "
    768 		    "initial virtual resolution %dx%d at %d bpp\n",
    769 		    XNAME(sc), i, dp->rd_virtx, dp->rd_virty, dp->rd_bpp);
    770 
    771 		/* now select the *video mode* that we will use */
    772 		for (j = 0; j < dp->rd_ncrtcs; j++) {
    773 			const struct videomode *vmp;
    774 			vmp = radeonfb_port_mode(sc, dp->rd_crtcs[j].rc_port,
    775 			    dp->rd_virtx, dp->rd_virty);
    776 
    777 			/*
    778 			 * virtual resolution should be at least as high as
    779 			 * physical
    780 			 */
    781 			if (dp->rd_virtx < vmp->hdisplay ||
    782 			    dp->rd_virty < vmp->vdisplay) {
    783 				dp->rd_virtx = vmp->hdisplay;
    784 				dp->rd_virty = vmp->vdisplay;
    785 			}
    786 
    787 			dp->rd_crtcs[j].rc_videomode = *vmp;
    788 			printf("%s: port %d: physical %dx%d %dHz\n",
    789 			    XNAME(sc), j, vmp->hdisplay, vmp->vdisplay,
    790 			    DIVIDE(DIVIDE(vmp->dot_clock * 1000,
    791 				       vmp->htotal), vmp->vtotal));
    792 		}
    793 
    794 		/* N.B.: radeon wants 64-byte aligned stride */
    795 		dp->rd_stride = dp->rd_virtx * dp->rd_bpp / 8;
    796 		dp->rd_stride = ROUNDUP(dp->rd_stride, RADEON_STRIDEALIGN);
    797 
    798 		dp->rd_offset = sc->sc_fboffset * i;
    799 		dp->rd_fbptr = (vaddr_t)bus_space_vaddr(sc->sc_memt,
    800 		    sc->sc_memh) + dp->rd_offset;
    801 		dp->rd_curoff = sc->sc_fbsize;
    802 		dp->rd_curptr = dp->rd_fbptr + dp->rd_curoff;
    803 
    804 		DPRINTF(("fpbtr = %p\n", (void *)dp->rd_fbptr));
    805 
    806 		switch (dp->rd_bpp) {
    807 		case 8:
    808 			dp->rd_format = 2;
    809 			break;
    810 		case 32:
    811 			dp->rd_format = 6;
    812 			break;
    813 		default:
    814 			aprint_error("%s: bad depth %d\n", XNAME(sc),
    815 			    dp->rd_bpp);
    816 			goto error;
    817 		}
    818 
    819 		DPRINTF(("init engine\n"));
    820 		/* XXX: this seems suspicious - per display engine
    821 		   initialization? */
    822 		radeonfb_engine_init(dp);
    823 
    824 		/* copy the template into place */
    825 		dp->rd_wsscreens_storage[0] = radeonfb_stdscreen;
    826 		dp->rd_wsscreens = dp->rd_wsscreens_storage;
    827 
    828 		/* and make up the list */
    829 		dp->rd_wsscreenlist.nscreens = 1;
    830 		dp->rd_wsscreenlist.screens = (void *)&dp->rd_wsscreens;
    831 
    832 		vcons_init(&dp->rd_vd, dp, dp->rd_wsscreens,
    833 		    &radeonfb_accessops);
    834 
    835 		dp->rd_vd.init_screen = radeonfb_init_screen;
    836 
    837 		dp->rd_console = 0;
    838 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
    839 		    "is_console", &dp->rd_console);
    840 
    841 		dp->rd_vscreen.scr_flags |= VCONS_SCREEN_IS_STATIC;
    842 
    843 
    844 		vcons_init_screen(&dp->rd_vd, &dp->rd_vscreen,
    845 		    dp->rd_console, &defattr);
    846 
    847 		ri = &dp->rd_vscreen.scr_ri;
    848 
    849 		/* clear the screen */
    850 		rasops_unpack_attr(defattr, &fg, &bg, &ul);
    851 		radeonfb_rectfill(dp, 0, 0, ri->ri_width, ri->ri_height,
    852 		    ri->ri_devcmap[bg & 0xf]);
    853 
    854 		dp->rd_wsscreens->textops = &ri->ri_ops;
    855 		dp->rd_wsscreens->capabilities = ri->ri_caps;
    856 		dp->rd_wsscreens->nrows = ri->ri_rows;
    857 		dp->rd_wsscreens->ncols = ri->ri_cols;
    858 
    859 #ifdef SPLASHSCREEN
    860 		dp->rd_splash.si_depth = ri->ri_depth;
    861 		dp->rd_splash.si_bits = ri->ri_bits;
    862 		dp->rd_splash.si_hwbits = ri->ri_hwbits;
    863 		dp->rd_splash.si_width = ri->ri_width;
    864 		dp->rd_splash.si_height = ri->ri_height;
    865 		dp->rd_splash.si_stride = ri->ri_stride;
    866 		dp->rd_splash.si_fillrect = NULL;
    867 #endif
    868 		dp->rd_gc.gc_bitblt = radeonfb_bitblt;
    869 		dp->rd_gc.gc_rop = RADEON_ROP3_S;
    870 		dp->rd_gc.gc_blitcookie = dp;
    871 		glyphcache_init(&dp->rd_gc, dp->rd_virty + 4,
    872 		    (0x800000 / dp->rd_stride) - (dp->rd_virty + 4),
    873 		    dp->rd_virty,
    874 		    ri->ri_font->fontwidth,
    875 		    ri->ri_font->fontheight,
    876 		    defattr);
    877 		if (dp->rd_console) {
    878 
    879 			radeonfb_modeswitch(dp);
    880 			wsdisplay_cnattach(dp->rd_wsscreens, ri, 0, 0,
    881 			    defattr);
    882 #ifdef SPLASHSCREEN
    883 			if (splash_render(&dp->rd_splash,
    884 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
    885 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    886 			else
    887 #endif
    888 				vcons_replay_msgbuf(&dp->rd_vscreen);
    889 		} else {
    890 
    891 			/*
    892 			 * since we're not the console we can postpone
    893 			 * the rest until someone actually allocates a
    894 			 * screen for us.  but we do clear the screen
    895 			 * at least.
    896 			 */
    897 			memset(ri->ri_bits, 0, 1024);
    898 
    899 			radeonfb_modeswitch(dp);
    900 #ifdef SPLASHSCREEN
    901 			if (splash_render(&dp->rd_splash,
    902 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
    903 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    904 #endif
    905 		}
    906 
    907 		aa.console = dp->rd_console;
    908 		aa.scrdata = &dp->rd_wsscreenlist;
    909 		aa.accessops = &radeonfb_accessops;
    910 		aa.accesscookie = &dp->rd_vd;
    911 
    912 		config_found(sc->sc_dev, &aa, wsemuldisplaydevprint);
    913 
    914 		radeonfb_blank(dp, 0);
    915 
    916 		/* Initialise delayed lvds operations for backlight. */
    917 		callout_init(&dp->rd_bl_lvds_co, 0);
    918 		callout_setfunc(&dp->rd_bl_lvds_co,
    919 				radeonfb_lvds_callout, dp);
    920 		dp->rd_bl_on = 1;
    921 		dp->rd_bl_level = radeonfb_get_backlight(dp);
    922 		radeonfb_set_backlight(dp, dp->rd_bl_level);
    923 	}
    924 
    925 	/*
    926 	 * if we have console output via firmware like on sparc64 it may
    927 	 * interfere with DAC programming so program the palette again
    928 	 * here after we took over
    929 	 */
    930 	radeonfb_init_palette(sc, 0);
    931 	if (HAS_CRTC2(sc))
    932 		radeonfb_init_palette(sc, 1);
    933 
    934 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_UP,
    935 	    radeonfb_brightness_up, TRUE);
    936 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_DOWN,
    937 	    radeonfb_brightness_down, TRUE);
    938 
    939 	config_found_ia(dev, "drm", aux, radeonfb_drm_print);
    940 
    941 	return;
    942 
    943 error:
    944 	if (sc->sc_biossz)
    945 		free(sc->sc_bios, M_DEVBUF);
    946 
    947 	if (sc->sc_regsz)
    948 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
    949 
    950 	if (sc->sc_memsz)
    951 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
    952 }
    953 
    954 static void
    955 radeonfb_map(struct radeonfb_softc *sc)
    956 {
    957 	if (bus_space_map(sc->sc_regt, sc->sc_regaddr, sc->sc_regsz, 0,
    958 	    &sc->sc_regh) != 0) {
    959 		aprint_error("%s: unable to map registers!\n", XNAME(sc));
    960 		return;
    961 	}
    962 	if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
    963 		BUS_SPACE_MAP_LINEAR, &sc->sc_memh) != 0) {
    964 		sc->sc_memsz = 0;
    965 		aprint_error("%s: Unable to map frame buffer\n", XNAME(sc));
    966 		return;
    967 	}
    968 }
    969 
    970 static void
    971 radeonfb_unmap(struct radeonfb_softc *sc)
    972 {
    973 	bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
    974 	bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
    975 }
    976 
    977 static int
    978 radeonfb_drm_print(void *aux, const char *pnp)
    979 {
    980 	if (pnp)
    981 		aprint_normal("drm at %s", pnp);
    982 	return (UNCONF);
    983 }
    984 
    985 int
    986 radeonfb_ioctl(void *v, void *vs,
    987     unsigned long cmd, void *d, int flag, struct lwp *l)
    988 {
    989 	struct vcons_data	*vd;
    990 	struct radeonfb_display	*dp;
    991 	struct radeonfb_softc	*sc;
    992 	struct wsdisplay_param  *param;
    993 
    994 	vd = (struct vcons_data *)v;
    995 	dp = (struct radeonfb_display *)vd->cookie;
    996 	sc = dp->rd_softc;
    997 
    998 	switch (cmd) {
    999 	case WSDISPLAYIO_GTYPE:
   1000 		*(unsigned *)d = WSDISPLAY_TYPE_PCIMISC;
   1001 		return 0;
   1002 
   1003 	case WSDISPLAYIO_GINFO:
   1004 		if (vd->active != NULL) {
   1005 			struct wsdisplay_fbinfo *fb;
   1006 			fb = (struct wsdisplay_fbinfo *)d;
   1007 			fb->width = dp->rd_virtx;
   1008 			fb->height = dp->rd_virty;
   1009 			fb->depth = dp->rd_bpp;
   1010 			fb->cmsize = 256;
   1011 			return 0;
   1012 		} else
   1013 			return ENODEV;
   1014 	case WSDISPLAYIO_GVIDEO:
   1015 		if (radeonfb_isblank(dp))
   1016 			*(unsigned *)d = WSDISPLAYIO_VIDEO_OFF;
   1017 		else
   1018 			*(unsigned *)d = WSDISPLAYIO_VIDEO_ON;
   1019 		return 0;
   1020 
   1021 	case WSDISPLAYIO_SVIDEO:
   1022 		radeonfb_blank(dp,
   1023 		    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_OFF));
   1024 		return 0;
   1025 
   1026 	case WSDISPLAYIO_GETCMAP:
   1027 #if 0
   1028 		if (dp->rd_bpp == 8)
   1029 			return radeonfb_getcmap(sc,
   1030 			    (struct wsdisplay_cmap *)d);
   1031 #endif
   1032 		return EINVAL;
   1033 
   1034 	case WSDISPLAYIO_PUTCMAP:
   1035 #if 0
   1036 		if (dp->rd_bpp == 8)
   1037 			return radeonfb_putcmap(sc,
   1038 			    (struct wsdisplay_cmap *)d);
   1039 #endif
   1040 		return EINVAL;
   1041 
   1042 	case WSDISPLAYIO_LINEBYTES:
   1043 		*(unsigned *)d = dp->rd_stride;
   1044 		return 0;
   1045 
   1046 	case WSDISPLAYIO_SMODE:
   1047 		if (*(int *)d != dp->rd_wsmode) {
   1048 			dp->rd_wsmode = *(int *)d;
   1049 			if ((dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) &&
   1050 			    (dp->rd_vd.active)) {
   1051 			    	radeonfb_map(sc);
   1052 				radeonfb_engine_init(dp);
   1053 				glyphcache_wipe(&dp->rd_gc);
   1054 				radeonfb_init_palette(sc, dp == &sc->sc_displays[0] ? 0 : 1);
   1055 				radeonfb_modeswitch(dp);
   1056 				vcons_redraw_screen(dp->rd_vd.active);
   1057 			} else {
   1058 				radeonfb_unmap(sc);
   1059 			}
   1060 		}
   1061 		return 0;
   1062 
   1063 	case WSDISPLAYIO_GCURMAX:
   1064 		((struct wsdisplay_curpos *)d)->x = RADEON_CURSORMAXX;
   1065 		((struct wsdisplay_curpos *)d)->y = RADEON_CURSORMAXY;
   1066 		return 0;
   1067 
   1068 	case WSDISPLAYIO_SCURSOR:
   1069 		return radeonfb_set_cursor(dp, (struct wsdisplay_cursor *)d);
   1070 
   1071 	case WSDISPLAYIO_GCURSOR:
   1072 		return EPASSTHROUGH;
   1073 
   1074 	case WSDISPLAYIO_GCURPOS:
   1075 		((struct wsdisplay_curpos *)d)->x = dp->rd_cursor.rc_pos.x;
   1076 		((struct wsdisplay_curpos *)d)->y = dp->rd_cursor.rc_pos.y;
   1077 		return 0;
   1078 
   1079 	case WSDISPLAYIO_SCURPOS:
   1080 		return radeonfb_set_curpos(dp, (struct wsdisplay_curpos *)d);
   1081 
   1082 	case WSDISPLAYIO_SSPLASH:
   1083 #if defined(SPLASHSCREEN)
   1084 		if (*(int *)d == 1) {
   1085 			SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
   1086 			splash_render(&dp->rd_splash,
   1087 			    SPLASH_F_CENTER|SPLASH_F_FILL);
   1088 		} else
   1089 			SCREEN_ENABLE_DRAWING(&dp->rd_vscreen);
   1090 		return 0;
   1091 #else
   1092 		return ENODEV;
   1093 #endif
   1094 	case WSDISPLAYIO_GETPARAM:
   1095 		param = (struct wsdisplay_param *)d;
   1096 		switch (param->param) {
   1097 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
   1098 			param->min = 0;
   1099 			param->max = 255;
   1100 			param->curval = dp->rd_bl_level;
   1101 			return 0;
   1102 		case WSDISPLAYIO_PARAM_BACKLIGHT:
   1103 			param->min = 0;
   1104 			param->max = RADEONFB_BACKLIGHT_MAX;
   1105 			param->curval = dp->rd_bl_on;
   1106 			return 0;
   1107 		}
   1108 		return EPASSTHROUGH;
   1109 
   1110 	case WSDISPLAYIO_SETPARAM:
   1111 		param = (struct wsdisplay_param *)d;
   1112 		switch (param->param) {
   1113 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
   1114 			radeonfb_set_backlight(dp, param->curval);
   1115 			return 0;
   1116 		case WSDISPLAYIO_PARAM_BACKLIGHT:
   1117 			radeonfb_switch_backlight(dp,  param->curval);
   1118 			return 0;
   1119 		}
   1120 		return EPASSTHROUGH;
   1121 
   1122 	/* PCI config read/write passthrough. */
   1123 	case PCI_IOC_CFGREAD:
   1124 	case PCI_IOC_CFGWRITE:
   1125 		return pci_devioctl(sc->sc_pc, sc->sc_pt, cmd, d, flag, l);
   1126 
   1127 	case WSDISPLAYIO_GET_BUSID:
   1128 		return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc,
   1129 		    sc->sc_pt, d);
   1130 
   1131 	case WSDISPLAYIO_GET_EDID: {
   1132 		struct wsdisplayio_edid_info *ei = d;
   1133 		return wsdisplayio_get_edid(sc->sc_dev, ei);
   1134 	}
   1135 
   1136 	default:
   1137 		return EPASSTHROUGH;
   1138 	}
   1139 }
   1140 
   1141 paddr_t
   1142 radeonfb_mmap(void *v, void *vs, off_t offset, int prot)
   1143 {
   1144 	struct vcons_data	*vd;
   1145 	struct radeonfb_display	*dp;
   1146 	struct radeonfb_softc	*sc;
   1147 	paddr_t			pa;
   1148 
   1149 	vd = (struct vcons_data *)v;
   1150 	dp = (struct radeonfb_display *)vd->cookie;
   1151 	sc = dp->rd_softc;
   1152 
   1153 	/* XXX: note that we don't allow mapping of registers right now */
   1154 	/* XXX: this means that the XFree86 radeon driver won't work */
   1155 	if ((offset >= 0) && (offset < (dp->rd_virty * dp->rd_stride))) {
   1156 		pa = bus_space_mmap(sc->sc_memt,
   1157 		    sc->sc_memaddr + dp->rd_offset + offset, 0,
   1158 		    prot, BUS_SPACE_MAP_LINEAR);
   1159 		return pa;
   1160 	}
   1161 
   1162 #ifdef RADEONFB_MMAP_BARS
   1163 	/*
   1164 	 * restrict all other mappings to processes with superuser privileges
   1165 	 * or the kernel itself
   1166 	 */
   1167 	if (kauth_authorize_machdep(kauth_cred_get(), KAUTH_MACHDEP_UNMANAGEDMEM,
   1168 	    NULL, NULL, NULL, NULL) != 0) {
   1169 		aprint_error_dev(sc->sc_dev, "mmap() rejected.\n");
   1170 		return -1;
   1171 	}
   1172 
   1173 	if ((offset >= sc->sc_regaddr) &&
   1174 	    (offset < sc->sc_regaddr + sc->sc_regsz)) {
   1175 		return bus_space_mmap(sc->sc_regt, offset, 0, prot,
   1176 		    BUS_SPACE_MAP_LINEAR);
   1177 	}
   1178 
   1179 	if ((offset >= sc->sc_memaddr) &&
   1180 	    (offset < sc->sc_memaddr + sc->sc_memsz)) {
   1181 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1182 		    BUS_SPACE_MAP_LINEAR);
   1183 	}
   1184 
   1185 	if ((offset >= sc->sc_romaddr) &&
   1186 	    (offset < sc->sc_romaddr + sc->sc_romsz)) {
   1187 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1188 		    BUS_SPACE_MAP_LINEAR);
   1189 	}
   1190 
   1191 #ifdef PCI_MAGIC_IO_RANGE
   1192 	/* allow mapping of IO space */
   1193 	if ((offset >= PCI_MAGIC_IO_RANGE) &&
   1194 	    (offset < PCI_MAGIC_IO_RANGE + 0x10000)) {
   1195 		pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE,
   1196 		    0, prot, 0);
   1197 		return pa;
   1198 	}
   1199 #endif /* PCI_MAGIC_IO_RANGE */
   1200 
   1201 #endif /* RADEONFB_MMAP_BARS */
   1202 
   1203 	return -1;
   1204 }
   1205 
   1206 static void
   1207 radeonfb_loadbios(struct radeonfb_softc *sc, const struct pci_attach_args *pa)
   1208 {
   1209 	bus_space_tag_t		romt;
   1210 	bus_space_handle_t	romh, biosh;
   1211 	bus_size_t		romsz;
   1212 	bus_addr_t		ptr;
   1213 
   1214 	if (pci_mapreg_map(pa, PCI_MAPREG_ROM, PCI_MAPREG_TYPE_ROM,
   1215 		BUS_SPACE_MAP_PREFETCHABLE, &romt, &romh, NULL, &romsz) != 0) {
   1216 		aprint_verbose("%s: unable to map BIOS!\n", XNAME(sc));
   1217 		return;
   1218 	}
   1219 
   1220 	pci_find_rom(pa, romt, romh, PCI_ROM_CODE_TYPE_X86, &biosh,
   1221 	    &sc->sc_biossz);
   1222 	if (sc->sc_biossz == 0) {
   1223 		aprint_verbose("%s: Video BIOS not present\n", XNAME(sc));
   1224 		return;
   1225 	}
   1226 
   1227 	sc->sc_bios = malloc(sc->sc_biossz, M_DEVBUF, M_WAITOK);
   1228 	bus_space_read_region_1(romt, biosh, 0, sc->sc_bios, sc->sc_biossz);
   1229 
   1230 	/* unmap the PCI expansion rom */
   1231 	bus_space_unmap(romt, romh, romsz);
   1232 
   1233 	/* turn off rom decoder now */
   1234 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM,
   1235 	    pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM) &
   1236 	    ~PCI_MAPREG_ROM_ENABLE);
   1237 
   1238 	ptr = GETBIOS16(sc, 0x48);
   1239 	if ((GETBIOS32(sc, ptr + 4) == 0x41544f4d /* "ATOM" */) ||
   1240 	    (GETBIOS32(sc, ptr + 4) == 0x4d4f5441 /* "MOTA" */)) {
   1241 		sc->sc_flags |= RFB_ATOM;
   1242 	}
   1243 
   1244 	aprint_verbose("%s: Found %d KB %s BIOS\n", XNAME(sc),
   1245 	    (unsigned)sc->sc_biossz >> 10, IS_ATOM(sc) ? "ATOM" : "Legacy");
   1246 }
   1247 
   1248 
   1249 uint32_t
   1250 radeonfb_get32(struct radeonfb_softc *sc, uint32_t reg)
   1251 {
   1252 
   1253 	return bus_space_read_4(sc->sc_regt, sc->sc_regh, reg);
   1254 }
   1255 
   1256 void
   1257 radeonfb_put32(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1258 {
   1259 
   1260 	bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, val);
   1261 }
   1262 
   1263 void
   1264 radeonfb_put32s(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1265 {
   1266 
   1267 	bus_space_write_stream_4(sc->sc_regt, sc->sc_regh, reg, val);
   1268 }
   1269 
   1270 void
   1271 radeonfb_mask32(struct radeonfb_softc *sc, uint32_t reg,
   1272     uint32_t andmask, uint32_t ormask)
   1273 {
   1274 	int		s;
   1275 	uint32_t	val;
   1276 
   1277 	s = splhigh();
   1278 	val = radeonfb_get32(sc, reg);
   1279 	val = (val & andmask) | ormask;
   1280 	radeonfb_put32(sc, reg, val);
   1281 	splx(s);
   1282 }
   1283 
   1284 uint32_t
   1285 radeonfb_getindex(struct radeonfb_softc *sc, uint32_t idx)
   1286 {
   1287 	int		s;
   1288 	uint32_t	val;
   1289 
   1290 	s = splhigh();
   1291 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1292 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1293 	splx(s);
   1294 
   1295 	return (val);
   1296 }
   1297 
   1298 void
   1299 radeonfb_putindex(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1300 {
   1301 	int	s;
   1302 
   1303 	s = splhigh();
   1304 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1305 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1306 	splx(s);
   1307 }
   1308 
   1309 void
   1310 radeonfb_maskindex(struct radeonfb_softc *sc, uint32_t idx,
   1311     uint32_t andmask, uint32_t ormask)
   1312 {
   1313 	int		s;
   1314 	uint32_t	val;
   1315 
   1316 	s = splhigh();
   1317 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1318 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1319 	val = (val & andmask) | ormask;
   1320 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1321 	splx(s);
   1322 }
   1323 
   1324 uint32_t
   1325 radeonfb_getpll(struct radeonfb_softc *sc, uint32_t idx)
   1326 {
   1327 	int		s;
   1328 	uint32_t	val;
   1329 
   1330 	s = splhigh();
   1331 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, idx & 0x3f);
   1332 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1333 	if (HAS_R300CG(sc))
   1334 		radeonfb_r300cg_workaround(sc);
   1335 	splx(s);
   1336 
   1337 	return (val);
   1338 }
   1339 
   1340 void
   1341 radeonfb_putpll(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1342 {
   1343 	int	s;
   1344 
   1345 	s = splhigh();
   1346 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1347 	    RADEON_PLL_WR_EN);
   1348 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1349 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1350 	splx(s);
   1351 }
   1352 
   1353 void
   1354 radeonfb_maskpll(struct radeonfb_softc *sc, uint32_t idx,
   1355     uint32_t andmask, uint32_t ormask)
   1356 {
   1357 	int		s;
   1358 	uint32_t	val;
   1359 
   1360 	s = splhigh();
   1361 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1362 		RADEON_PLL_WR_EN);
   1363 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1364 	val = (val & andmask) | ormask;
   1365 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1366 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1367 	splx(s);
   1368 }
   1369 
   1370 int
   1371 radeonfb_scratch_test(struct radeonfb_softc *sc, int reg, uint32_t v)
   1372 {
   1373 	uint32_t	saved;
   1374 
   1375 	saved = GET32(sc, reg);
   1376 	PUT32(sc, reg, v);
   1377 	if (GET32(sc, reg) != v) {
   1378 		return -1;
   1379 	}
   1380 	PUT32(sc, reg, saved);
   1381 	return 0;
   1382 }
   1383 
   1384 uintmax_t
   1385 radeonfb_getprop_num(struct radeonfb_softc *sc, const char *name,
   1386     uintmax_t defval)
   1387 {
   1388 	prop_number_t	pn;
   1389 	pn = prop_dictionary_get(device_properties(sc->sc_dev), name);
   1390 	if (pn == NULL) {
   1391 		return defval;
   1392 	}
   1393 	KASSERT(prop_object_type(pn) == PROP_TYPE_NUMBER);
   1394 	return (prop_number_integer_value(pn));
   1395 }
   1396 
   1397 int
   1398 radeonfb_getclocks(struct radeonfb_softc *sc)
   1399 {
   1400 	bus_addr_t	ptr;
   1401 	int		refclk = 0;
   1402 	int		refdiv = 0;
   1403 	int		minpll = 0;
   1404 	int		maxpll = 0;
   1405 
   1406 	/* load initial property values if port/board provides them */
   1407 	refclk = radeonfb_getprop_num(sc, "refclk", 0) & 0xffff;
   1408 	refdiv = radeonfb_getprop_num(sc, "refdiv", 0) & 0xffff;
   1409 	minpll = radeonfb_getprop_num(sc, "minpll", 0) & 0xffffffffU;
   1410 	maxpll = radeonfb_getprop_num(sc, "maxpll", 0) & 0xffffffffU;
   1411 
   1412 	if (refclk && refdiv && minpll && maxpll)
   1413 		goto dontprobe;
   1414 
   1415 	if (!sc->sc_biossz) {
   1416 		/* no BIOS */
   1417 		aprint_verbose("%s: No video BIOS, using default clocks\n",
   1418 		    XNAME(sc));
   1419 		if (IS_IGP(sc))
   1420 			refclk = refclk ? refclk : 1432;
   1421 		else
   1422 			refclk = refclk ? refclk : 2700;
   1423 		refdiv = refdiv ? refdiv : 12;
   1424 		minpll = minpll ? minpll : 12500;
   1425 		maxpll = maxpll ? maxpll : 35000;
   1426 	} else if (IS_ATOM(sc)) {
   1427 		/* ATOM BIOS */
   1428 		ptr = GETBIOS16(sc, 0x48);
   1429 		ptr = GETBIOS16(sc, ptr + 32);	/* aka MasterDataStart */
   1430 		ptr = GETBIOS16(sc, ptr + 12);	/* pll info block */
   1431 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 82);
   1432 		minpll = minpll ? minpll : GETBIOS16(sc, ptr + 78);
   1433 		maxpll = maxpll ? maxpll : GETBIOS16(sc, ptr + 32);
   1434 		/*
   1435 		 * ATOM BIOS doesn't supply a reference divider, so we
   1436 		 * have to probe for it.
   1437 		 */
   1438 		if (refdiv < 2)
   1439 			refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1440 			    RADEON_PPLL_REF_DIV_MASK;
   1441 		/*
   1442 		 * if probe is zero, just assume one that should work
   1443 		 * for most parts
   1444 		 */
   1445 		if (refdiv < 2)
   1446 			refdiv = 12;
   1447 
   1448 	} else {
   1449 		/* Legacy BIOS */
   1450 		ptr = GETBIOS16(sc, 0x48);
   1451 		ptr = GETBIOS16(sc, ptr + 0x30);
   1452 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 0x0E);
   1453 		refdiv = refdiv ? refdiv : GETBIOS16(sc, ptr + 0x10);
   1454 		minpll = minpll ? minpll : GETBIOS32(sc, ptr + 0x12);
   1455 		maxpll = maxpll ? maxpll : GETBIOS32(sc, ptr + 0x16);
   1456 	}
   1457 
   1458 
   1459 dontprobe:
   1460 	sc->sc_refclk = refclk * 10;
   1461 	sc->sc_refdiv = refdiv;
   1462 	sc->sc_minpll = minpll * 10;
   1463 	sc->sc_maxpll = maxpll * 10;
   1464 	return 0;
   1465 }
   1466 
   1467 int
   1468 radeonfb_calc_dividers(struct radeonfb_softc *sc, uint32_t dotclock,
   1469     uint32_t *postdivbit, uint32_t *feedbackdiv)
   1470 {
   1471 	int		i;
   1472 	uint32_t	outfreq;
   1473 	int		div;
   1474 
   1475 	DPRINTF(("dot clock: %u\n", dotclock));
   1476 	for (i = 0; (div = radeonfb_dividers[i].divider) != 0; i++) {
   1477 		outfreq = div * dotclock;
   1478 		if ((outfreq >= sc->sc_minpll) &&
   1479 		    (outfreq <= sc->sc_maxpll)) {
   1480 			DPRINTF(("outfreq: %u\n", outfreq));
   1481 			*postdivbit =
   1482 			    ((uint32_t)radeonfb_dividers[i].mask << 16);
   1483 			DPRINTF(("post divider: %d (mask %x)\n", div,
   1484 				    *postdivbit));
   1485 			break;
   1486 		}
   1487 	}
   1488 
   1489 	if (div == 0)
   1490 		return 1;
   1491 
   1492 	*feedbackdiv = DIVIDE(sc->sc_refdiv * outfreq, sc->sc_refclk);
   1493 	DPRINTF(("feedback divider: %d\n", *feedbackdiv));
   1494 	return 0;
   1495 }
   1496 
   1497 #if 0
   1498 #ifdef RADEONFB_DEBUG
   1499 static void
   1500 dump_buffer(const char *pfx, void *buffer, unsigned int size)
   1501 {
   1502 	char		asc[17];
   1503 	unsigned	ptr = (unsigned)buffer;
   1504 	char		*start = (char *)(ptr & ~0xf);
   1505 	char		*end = (char *)(ptr + size);
   1506 
   1507 	end = (char *)(((unsigned)end + 0xf) & ~0xf);
   1508 
   1509 	if (pfx == NULL) {
   1510 		pfx = "";
   1511 	}
   1512 
   1513 	while (start < end) {
   1514 		unsigned offset = (unsigned)start & 0xf;
   1515 		if (offset == 0) {
   1516 			printf("%s%x: ", pfx, (unsigned)start);
   1517 		}
   1518 		if (((unsigned)start < ptr) ||
   1519 		    ((unsigned)start >= (ptr + size))) {
   1520 			printf("  ");
   1521 			asc[offset] = ' ';
   1522 		} else {
   1523 			printf("%02x", *(unsigned char *)start);
   1524 			if ((*start >= ' ') && (*start <= '~')) {
   1525 				asc[offset] = *start;
   1526 			} else {
   1527 				asc[offset] = '.';
   1528 			}
   1529 		}
   1530 		asc[offset + 1] = 0;
   1531 		if (offset % 2) {
   1532 			printf(" ");
   1533 		}
   1534 		if (offset == 15) {
   1535 			printf(" %s\n", asc);
   1536 		}
   1537 		start++;
   1538 	}
   1539 }
   1540 #endif
   1541 #endif
   1542 
   1543 int
   1544 radeonfb_getconnectors(struct radeonfb_softc *sc)
   1545 {
   1546 	int	i;
   1547 	int	found = 0;
   1548 
   1549 	for (i = 0; i < 2; i++) {
   1550 		sc->sc_ports[i].rp_mon_type = RADEON_MT_UNKNOWN;
   1551 		sc->sc_ports[i].rp_ddc_type = RADEON_DDC_NONE;
   1552 		sc->sc_ports[i].rp_dac_type = RADEON_DAC_UNKNOWN;
   1553 		sc->sc_ports[i].rp_conn_type = RADEON_CONN_NONE;
   1554 		sc->sc_ports[i].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1555 	}
   1556 
   1557 	/*
   1558 	 * This logic is borrowed from Xorg's radeon driver.
   1559 	 */
   1560 	if (!sc->sc_biossz)
   1561 		goto nobios;
   1562 
   1563 	if (IS_ATOM(sc)) {
   1564 		/* not done yet */
   1565 	} else {
   1566 		uint16_t	ptr;
   1567 		int		port = 0;
   1568 
   1569 		ptr = GETBIOS16(sc, 0x48);
   1570 		ptr = GETBIOS16(sc, ptr + 0x50);
   1571 		for (i = 1; i < 4; i++) {
   1572 			uint16_t	entry;
   1573 			uint8_t		conn, ddc, dac, tmds;
   1574 
   1575 			/*
   1576 			 * Parse the connector table.  From reading the code,
   1577 			 * it appears to made up of 16-bit entries for each
   1578 			 * connector.  The 16-bits are defined as:
   1579 			 *
   1580 			 * bits 12-15	- connector type (0 == end of table)
   1581 			 * bits 8-11	- DDC type
   1582 			 * bits 5-7	- ???
   1583 			 * bit 4	- TMDS type (1 = EXT, 0 = INT)
   1584 			 * bits 1-3	- ???
   1585 			 * bit 0	- DAC, 1 = TVDAC, 0 = primary
   1586 			 */
   1587 			if (!GETBIOS8(sc, ptr + i * 2) && i > 1)
   1588 				break;
   1589 			entry = GETBIOS16(sc, ptr + i * 2);
   1590 
   1591 			conn = (entry >> 12) & 0xf;
   1592 			ddc = (entry >> 8) & 0xf;
   1593 			dac = (entry & 0x1) ? RADEON_DAC_TVDAC :
   1594 			    RADEON_DAC_PRIMARY;
   1595 			tmds = ((entry >> 4) & 0x1) ? RADEON_TMDS_EXT :
   1596 			    RADEON_TMDS_INT;
   1597 
   1598 			if (conn == RADEON_CONN_NONE)
   1599 				continue;	/* no connector */
   1600 
   1601 			if ((found > 0) &&
   1602 			    (sc->sc_ports[port].rp_ddc_type == ddc)) {
   1603 				/* duplicate entry for same connector */
   1604 				continue;
   1605 			}
   1606 
   1607 			/* internal DDC_DVI port gets priority */
   1608 			if ((ddc == RADEON_DDC_DVI) || (port == 1))
   1609 				port = 0;
   1610 			else
   1611 				port = 1;
   1612 
   1613 			sc->sc_ports[port].rp_ddc_type =
   1614 			    ddc > RADEON_DDC_CRT2 ? RADEON_DDC_NONE : ddc;
   1615 			sc->sc_ports[port].rp_dac_type = dac;
   1616 			sc->sc_ports[port].rp_conn_type =
   1617 			    min(conn, RADEON_CONN_UNSUPPORTED) ;
   1618 
   1619 			sc->sc_ports[port].rp_tmds_type = tmds;
   1620 
   1621 			if ((conn != RADEON_CONN_DVI_I) &&
   1622 			    (conn != RADEON_CONN_DVI_D) &&
   1623 			    (tmds == RADEON_TMDS_INT))
   1624 				sc->sc_ports[port].rp_tmds_type =
   1625 				    RADEON_TMDS_UNKNOWN;
   1626 
   1627 			found += (port + 1);
   1628 		}
   1629 	}
   1630 
   1631 nobios:
   1632 	if (!found) {
   1633 		DPRINTF(("No connector info in BIOS!\n"));
   1634 		/* default, port 0 = internal TMDS, port 1 = CRT */
   1635 		sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1636 		sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1637 		sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1638 		sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1639 		sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1640 
   1641 		sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1642 		sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1643 		sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1644 		sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1645 		sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_EXT;
   1646 	}
   1647 
   1648 	/*
   1649 	 * Fixup for RS300/RS350/RS400 chips, that lack a primary DAC.
   1650 	 * these chips should use TVDAC for the VGA port.
   1651 	 */
   1652 	if (HAS_SDAC(sc)) {
   1653 		if (sc->sc_ports[0].rp_conn_type == RADEON_CONN_CRT) {
   1654 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1655 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1656 		} else {
   1657 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_TVDAC;
   1658 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1659 		}
   1660 	} else if (!HAS_CRTC2(sc)) {
   1661 		sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1662 	}
   1663 
   1664 	for (i = 0; i < 2; i++) {
   1665 		char	edid[128];
   1666 		uint8_t	ddc;
   1667 		struct edid_info *eip = &sc->sc_ports[i].rp_edid;
   1668 		prop_data_t edid_data;
   1669 
   1670 		DPRINTF(("Port #%d:\n", i));
   1671 		DPRINTF(("    conn = %d\n", sc->sc_ports[i].rp_conn_type));
   1672 		DPRINTF(("    ddc = %d\n", sc->sc_ports[i].rp_ddc_type));
   1673 		DPRINTF(("    dac = %d\n", sc->sc_ports[i].rp_dac_type));
   1674 		DPRINTF(("    tmds = %d\n", sc->sc_ports[i].rp_tmds_type));
   1675 
   1676 		sc->sc_ports[i].rp_edid_valid = 0;
   1677 		/* first look for static EDID data */
   1678 		if ((edid_data = prop_dictionary_get(device_properties(
   1679 		    sc->sc_dev), "EDID")) != NULL) {
   1680 
   1681 			aprint_normal_dev(sc->sc_dev, "using static EDID\n");
   1682 			memcpy(edid, prop_data_data_nocopy(edid_data), 128);
   1683 			if (edid_parse(edid, eip) == 0) {
   1684 
   1685 				sc->sc_ports[i].rp_edid_valid = 1;
   1686 			}
   1687 		}
   1688 		/* if we didn't find any we'll try to talk to the monitor */
   1689 		if (sc->sc_ports[i].rp_edid_valid != 1) {
   1690 
   1691 			ddc = sc->sc_ports[i].rp_ddc_type;
   1692 			if (ddc != RADEON_DDC_NONE) {
   1693 				if ((radeonfb_i2c_read_edid(sc, ddc, edid)
   1694 				    == 0) && (edid_parse(edid, eip) == 0)) {
   1695 
   1696 					sc->sc_ports[i].rp_edid_valid = 1;
   1697 					edid_print(eip);
   1698 				}
   1699 			}
   1700 		}
   1701 	}
   1702 
   1703 	return found;
   1704 }
   1705 
   1706 int
   1707 radeonfb_gettmds(struct radeonfb_softc *sc)
   1708 {
   1709 	int	i;
   1710 
   1711 	if (!sc->sc_biossz) {
   1712 		goto nobios;
   1713 	}
   1714 
   1715 	if (IS_ATOM(sc)) {
   1716 		/* XXX: not done yet */
   1717 	} else {
   1718 		uint16_t	ptr;
   1719 		int		n;
   1720 
   1721 		ptr = GETBIOS16(sc, 0x48);
   1722 		ptr = GETBIOS16(sc, ptr + 0x34);
   1723 		DPRINTF(("DFP table revision %d\n", GETBIOS8(sc, ptr)));
   1724 		if (GETBIOS8(sc, ptr) == 3) {
   1725 			/* revision three table */
   1726 			n = GETBIOS8(sc, ptr + 5) + 1;
   1727 			n = min(n, 4);
   1728 
   1729 			memset(sc->sc_tmds_pll, 0, sizeof (sc->sc_tmds_pll));
   1730 			for (i = 0; i < n; i++) {
   1731 				sc->sc_tmds_pll[i].rtp_pll = GETBIOS32(sc,
   1732 				    ptr + i * 10 + 8);
   1733 				sc->sc_tmds_pll[i].rtp_freq = GETBIOS16(sc,
   1734 				    ptr + i * 10 + 0x10);
   1735 				DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1736 					    sc->sc_tmds_pll[i].rtp_freq,
   1737 					    sc->sc_tmds_pll[i].rtp_pll));
   1738 			}
   1739 			return 0;
   1740 		}
   1741 	}
   1742 
   1743 nobios:
   1744 	DPRINTF(("no suitable DFP table present\n"));
   1745 	for (i = 0;
   1746 	     i < sizeof (radeonfb_tmds_pll) / sizeof (radeonfb_tmds_pll[0]);
   1747 	     i++) {
   1748 		int	j;
   1749 
   1750 		if (radeonfb_tmds_pll[i].family != sc->sc_family)
   1751 			continue;
   1752 
   1753 		for (j = 0; j < 4; j++) {
   1754 			sc->sc_tmds_pll[j] = radeonfb_tmds_pll[i].plls[j];
   1755 			DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1756 				    sc->sc_tmds_pll[j].rtp_freq,
   1757 				    sc->sc_tmds_pll[j].rtp_pll));
   1758 		}
   1759 		return 0;
   1760 	}
   1761 
   1762 	return -1;
   1763 }
   1764 
   1765 const struct videomode *
   1766 radeonfb_modelookup(const char *name)
   1767 {
   1768 	int	i;
   1769 
   1770 	for (i = 0; i < videomode_count; i++)
   1771 		if (!strcmp(name, videomode_list[i].name))
   1772 			return &videomode_list[i];
   1773 
   1774 	return NULL;
   1775 }
   1776 
   1777 void
   1778 radeonfb_pllwriteupdate(struct radeonfb_softc *sc, int crtc)
   1779 {
   1780 	if (crtc) {
   1781 		while (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   1782 		    RADEON_P2PLL_ATOMIC_UPDATE_R);
   1783 		SETPLL(sc, RADEON_P2PLL_REF_DIV, RADEON_P2PLL_ATOMIC_UPDATE_W);
   1784 	} else {
   1785 		while (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1786 		    RADEON_PPLL_ATOMIC_UPDATE_R);
   1787 		SETPLL(sc, RADEON_PPLL_REF_DIV, RADEON_PPLL_ATOMIC_UPDATE_W);
   1788 	}
   1789 }
   1790 
   1791 void
   1792 radeonfb_pllwaitatomicread(struct radeonfb_softc *sc, int crtc)
   1793 {
   1794 	int	i;
   1795 
   1796 	for (i = 10000; i; i--) {
   1797 		if (crtc) {
   1798 			if (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   1799 			    RADEON_P2PLL_ATOMIC_UPDATE_R)
   1800 				break;
   1801 		} else {
   1802 			if (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1803 			    RADEON_PPLL_ATOMIC_UPDATE_R)
   1804 				break;
   1805 		}
   1806 	}
   1807 }
   1808 
   1809 void
   1810 radeonfb_program_vclk(struct radeonfb_softc *sc, int dotclock, int crtc)
   1811 {
   1812 	uint32_t	pbit = 0;
   1813 	uint32_t	feed = 0;
   1814 	uint32_t	data;
   1815 #if 1
   1816 	int		i;
   1817 #endif
   1818 
   1819 	radeonfb_calc_dividers(sc, dotclock, &pbit, &feed);
   1820 
   1821 	if (crtc == 0) {
   1822 
   1823 		/* XXXX: mobility workaround missing */
   1824 		/* XXXX: R300 stuff missing */
   1825 
   1826 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   1827 		    RADEON_VCLK_SRC_SEL_CPUCLK,
   1828 		    ~RADEON_VCLK_SRC_SEL_MASK);
   1829 
   1830 		/* put vclk into reset, use atomic updates */
   1831 		SETPLL(sc, RADEON_PPLL_CNTL,
   1832 		    RADEON_PPLL_REFCLK_SEL |
   1833 		    RADEON_PPLL_FBCLK_SEL |
   1834 		    RADEON_PPLL_RESET |
   1835 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   1836 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   1837 
   1838 		/* select clock 3 */
   1839 #if 0
   1840 		PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, RADEON_PLL_DIV_SEL,
   1841 		    ~RADEON_PLL_DIV_SEL);
   1842 #else
   1843 		PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   1844 		    ~RADEON_PLL_DIV_SEL);
   1845 #endif
   1846 
   1847 		/* XXX: R300 family -- program divider differently? */
   1848 
   1849 		/* program reference divider */
   1850 		PATCHPLL(sc, RADEON_PPLL_REF_DIV, sc->sc_refdiv,
   1851 		    ~RADEON_PPLL_REF_DIV_MASK);
   1852 		PRINTPLL(RADEON_PPLL_REF_DIV);
   1853 
   1854 #if 0
   1855 		data = GETPLL(sc, RADEON_PPLL_DIV_3);
   1856 		data &= ~(RADEON_PPLL_FB3_DIV_MASK |
   1857 		    RADEON_PPLL_POST3_DIV_MASK);
   1858 		data |= pbit;
   1859 		data |= (feed & RADEON_PPLL_FB3_DIV_MASK);
   1860 		PUTPLL(sc, RADEON_PPLL_DIV_3, data);
   1861 #else
   1862 		for (i = 0; i < 4; i++) {
   1863 		}
   1864 #endif
   1865 
   1866 		/* use the atomic update */
   1867 		radeonfb_pllwriteupdate(sc, crtc);
   1868 
   1869 		/* and wait for it to complete */
   1870 		radeonfb_pllwaitatomicread(sc, crtc);
   1871 
   1872 		/* program HTOTAL (why?) */
   1873 		PUTPLL(sc, RADEON_HTOTAL_CNTL, 0);
   1874 
   1875 		/* drop reset */
   1876 		CLRPLL(sc, RADEON_PPLL_CNTL,
   1877 		    RADEON_PPLL_RESET | RADEON_PPLL_SLEEP |
   1878 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   1879 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   1880 
   1881 		PRINTPLL(RADEON_PPLL_CNTL);
   1882 
   1883 		/* give clock time to lock */
   1884 		delay(50000);
   1885 
   1886 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   1887 		    RADEON_VCLK_SRC_SEL_PPLLCLK,
   1888 		    ~RADEON_VCLK_SRC_SEL_MASK);
   1889 
   1890 	} else {
   1891 
   1892 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   1893 		    RADEON_PIX2CLK_SRC_SEL_CPUCLK,
   1894 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   1895 
   1896 		/* put vclk into reset, use atomic updates */
   1897 		SETPLL(sc, RADEON_P2PLL_CNTL,
   1898 		    RADEON_P2PLL_RESET |
   1899 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   1900 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   1901 
   1902 		/* XXX: R300 family -- program divider differently? */
   1903 
   1904 		/* program reference divider */
   1905 		PATCHPLL(sc, RADEON_P2PLL_REF_DIV, sc->sc_refdiv,
   1906 		    ~RADEON_P2PLL_REF_DIV_MASK);
   1907 
   1908 		/* program feedback and post dividers */
   1909 		data = GETPLL(sc, RADEON_P2PLL_DIV_0);
   1910 		data &= ~(RADEON_P2PLL_FB0_DIV_MASK |
   1911 		    RADEON_P2PLL_POST0_DIV_MASK);
   1912 		data |= pbit;
   1913 		data |= (feed & RADEON_P2PLL_FB0_DIV_MASK);
   1914 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   1915 
   1916 		/* use the atomic update */
   1917 		radeonfb_pllwriteupdate(sc, crtc);
   1918 
   1919 		/* and wait for it to complete */
   1920 		radeonfb_pllwaitatomicread(sc, crtc);
   1921 
   1922 		/* program HTOTAL (why?) */
   1923 		PUTPLL(sc, RADEON_HTOTAL2_CNTL, 0);
   1924 
   1925 		/* drop reset */
   1926 		CLRPLL(sc, RADEON_P2PLL_CNTL,
   1927 		    RADEON_P2PLL_RESET | RADEON_P2PLL_SLEEP |
   1928 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   1929 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   1930 
   1931 		/* allow time for clock to lock */
   1932 		delay(50000);
   1933 
   1934 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   1935 		    RADEON_PIX2CLK_SRC_SEL_P2PLLCLK,
   1936 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   1937 	}
   1938 	PRINTREG(RADEON_CRTC_MORE_CNTL);
   1939 }
   1940 
   1941 void
   1942 radeonfb_modeswitch(struct radeonfb_display *dp)
   1943 {
   1944 	struct radeonfb_softc	*sc = dp->rd_softc;
   1945 	int			i;
   1946 
   1947 	/* blank the display while we switch modes */
   1948 	radeonfb_blank(dp, 1);
   1949 
   1950 #if 0
   1951 	SET32(sc, RADEON_CRTC_EXT_CNTL,
   1952 	    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   1953 	    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   1954 #endif
   1955 
   1956 	/* these registers might get in the way... */
   1957 	PUT32(sc, RADEON_OVR_CLR, 0);
   1958 	PUT32(sc, RADEON_OVR_WID_LEFT_RIGHT, 0);
   1959 	PUT32(sc, RADEON_OVR_WID_TOP_BOTTOM, 0);
   1960 	PUT32(sc, RADEON_OV0_SCALE_CNTL, 0);
   1961 	PUT32(sc, RADEON_SUBPIC_CNTL, 0);
   1962 	PUT32(sc, RADEON_VIPH_CONTROL, 0);
   1963 	PUT32(sc, RADEON_I2C_CNTL_1, 0);
   1964 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   1965 	PUT32(sc, RADEON_CAP0_TRIG_CNTL, 0);
   1966 	PUT32(sc, RADEON_CAP1_TRIG_CNTL, 0);
   1967 	PUT32(sc, RADEON_SURFACE_CNTL, 0);
   1968 
   1969 	for (i = 0; i < dp->rd_ncrtcs; i++)
   1970 		radeonfb_setcrtc(dp, i);
   1971 
   1972 	/* activate the display */
   1973 	radeonfb_blank(dp, 0);
   1974 }
   1975 
   1976 void
   1977 radeonfb_setcrtc(struct radeonfb_display *dp, int index)
   1978 {
   1979 	int			crtc;
   1980 	struct videomode	*mode;
   1981 	struct radeonfb_softc	*sc;
   1982 	struct radeonfb_crtc	*cp;
   1983 	uint32_t		v;
   1984 	uint32_t		gencntl;
   1985 	uint32_t		htotaldisp;
   1986 	uint32_t		hsyncstrt;
   1987 	uint32_t		vtotaldisp;
   1988 	uint32_t		vsyncstrt;
   1989 	uint32_t		fphsyncstrt;
   1990 	uint32_t		fpvsyncstrt;
   1991 	uint32_t		fphtotaldisp;
   1992 	uint32_t		fpvtotaldisp;
   1993 	uint32_t		pitch;
   1994 
   1995 	sc = dp->rd_softc;
   1996 	cp = &dp->rd_crtcs[index];
   1997 	crtc = cp->rc_number;
   1998 	mode = &cp->rc_videomode;
   1999 
   2000 #if 1
   2001 	pitch = (((dp->rd_virtx * dp->rd_bpp) + ((dp->rd_bpp * 8) - 1)) /
   2002 	    (dp->rd_bpp * 8));
   2003 #else
   2004 	pitch = (((sc->sc_maxx * sc->sc_maxbpp) + ((sc->sc_maxbpp * 8) - 1)) /
   2005 	    (sc->sc_maxbpp * 8));
   2006 #endif
   2007 
   2008 	switch (crtc) {
   2009 	case 0:
   2010 		gencntl = RADEON_CRTC_GEN_CNTL;
   2011 		htotaldisp = RADEON_CRTC_H_TOTAL_DISP;
   2012 		hsyncstrt = RADEON_CRTC_H_SYNC_STRT_WID;
   2013 		vtotaldisp = RADEON_CRTC_V_TOTAL_DISP;
   2014 		vsyncstrt = RADEON_CRTC_V_SYNC_STRT_WID;
   2015 		fpvsyncstrt = RADEON_FP_V_SYNC_STRT_WID;
   2016 		fphsyncstrt = RADEON_FP_H_SYNC_STRT_WID;
   2017 		fpvtotaldisp = RADEON_FP_CRTC_V_TOTAL_DISP;
   2018 		fphtotaldisp = RADEON_FP_CRTC_H_TOTAL_DISP;
   2019 		break;
   2020 	case 1:
   2021 		gencntl = RADEON_CRTC2_GEN_CNTL;
   2022 		htotaldisp = RADEON_CRTC2_H_TOTAL_DISP;
   2023 		hsyncstrt = RADEON_CRTC2_H_SYNC_STRT_WID;
   2024 		vtotaldisp = RADEON_CRTC2_V_TOTAL_DISP;
   2025 		vsyncstrt = RADEON_CRTC2_V_SYNC_STRT_WID;
   2026 		fpvsyncstrt = RADEON_FP_V2_SYNC_STRT_WID;
   2027 		fphsyncstrt = RADEON_FP_H2_SYNC_STRT_WID;
   2028 		fpvtotaldisp = RADEON_FP_CRTC2_V_TOTAL_DISP;
   2029 		fphtotaldisp = RADEON_FP_CRTC2_H_TOTAL_DISP;
   2030 		break;
   2031 	default:
   2032 		panic("Bad CRTC!");
   2033 		break;
   2034 	}
   2035 
   2036 	/*
   2037 	 * CRTC_GEN_CNTL - depth, accelerator mode, etc.
   2038 	 */
   2039 	/* only bother with 32bpp and 8bpp */
   2040 	v = dp->rd_format << RADEON_CRTC_PIX_WIDTH_SHIFT;
   2041 
   2042 	if (crtc == 1) {
   2043 		v |= RADEON_CRTC2_CRT2_ON | RADEON_CRTC2_EN;
   2044 	} else {
   2045 		v |= RADEON_CRTC_EXT_DISP_EN | RADEON_CRTC_EN;
   2046 	}
   2047 
   2048 	if (mode->flags & VID_DBLSCAN)
   2049 		v |= RADEON_CRTC2_DBL_SCAN_EN;
   2050 
   2051 	if (mode->flags & VID_INTERLACE)
   2052 		v |= RADEON_CRTC2_INTERLACE_EN;
   2053 
   2054 	if (mode->flags & VID_CSYNC) {
   2055 		v |= RADEON_CRTC2_CSYNC_EN;
   2056 		if (crtc == 1)
   2057 			v |= RADEON_CRTC2_VSYNC_TRISTAT;
   2058 	}
   2059 
   2060 	PUT32(sc, gencntl, v);
   2061 	DPRINTF(("CRTC%s_GEN_CNTL = %08x\n", crtc ? "2" : "", v));
   2062 
   2063 	/*
   2064 	 * CRTC_EXT_CNTL - preserve disable flags, set ATI linear and EXT_CNT
   2065 	 */
   2066 	v = GET32(sc, RADEON_CRTC_EXT_CNTL);
   2067 	if (crtc == 0) {
   2068 		v &= (RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2069 		    RADEON_CRTC_DISPLAY_DIS);
   2070 		v |= RADEON_XCRT_CNT_EN | RADEON_VGA_ATI_LINEAR;
   2071 		if (mode->flags & VID_CSYNC)
   2072 			v |= RADEON_CRTC_VSYNC_TRISTAT;
   2073 	}
   2074 	/* unconditional turn on CRT, in case first CRTC is DFP */
   2075 	v |= RADEON_CRTC_CRT_ON;
   2076 	PUT32(sc, RADEON_CRTC_EXT_CNTL, v);
   2077 	PRINTREG(RADEON_CRTC_EXT_CNTL);
   2078 
   2079 	/*
   2080 	 * H_TOTAL_DISP
   2081 	 */
   2082 	v = ((mode->hdisplay / 8) - 1) << 16;
   2083 	v |= (mode->htotal / 8) - 1;
   2084 	PUT32(sc, htotaldisp, v);
   2085 	DPRINTF(("CRTC%s_H_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2086 	PUT32(sc, fphtotaldisp, v);
   2087 	DPRINTF(("FP_H%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2088 
   2089 	/*
   2090 	 * H_SYNC_STRT_WID
   2091 	 */
   2092 	v = (((mode->hsync_end - mode->hsync_start) / 8) << 16);
   2093 	v |= mode->hsync_start;
   2094 	if (mode->flags & VID_NHSYNC)
   2095 		v |= RADEON_CRTC_H_SYNC_POL;
   2096 	PUT32(sc, hsyncstrt, v);
   2097 	DPRINTF(("CRTC%s_H_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2098 	PUT32(sc, fphsyncstrt, v);
   2099 	DPRINTF(("FP_H%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2100 
   2101 	/*
   2102 	 * V_TOTAL_DISP
   2103 	 */
   2104 	v = ((mode->vdisplay - 1) << 16);
   2105 	v |= (mode->vtotal - 1);
   2106 	PUT32(sc, vtotaldisp, v);
   2107 	DPRINTF(("CRTC%s_V_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2108 	PUT32(sc, fpvtotaldisp, v);
   2109 	DPRINTF(("FP_V%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2110 
   2111 	/*
   2112 	 * V_SYNC_STRT_WID
   2113 	 */
   2114 	v = ((mode->vsync_end - mode->vsync_start) << 16);
   2115 	v |= (mode->vsync_start - 1);
   2116 	if (mode->flags & VID_NVSYNC)
   2117 		v |= RADEON_CRTC_V_SYNC_POL;
   2118 	PUT32(sc, vsyncstrt, v);
   2119 	DPRINTF(("CRTC%s_V_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2120 	PUT32(sc, fpvsyncstrt, v);
   2121 	DPRINTF(("FP_V%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2122 
   2123 	radeonfb_program_vclk(sc, mode->dot_clock, crtc);
   2124 
   2125 	switch (crtc) {
   2126 	case 0:
   2127 		PUT32(sc, RADEON_CRTC_OFFSET, 0);
   2128 		PUT32(sc, RADEON_CRTC_OFFSET_CNTL, 0);
   2129 		PUT32(sc, RADEON_CRTC_PITCH, pitch);
   2130 		CLR32(sc, RADEON_DISP_MERGE_CNTL, RADEON_DISP_RGB_OFFSET_EN);
   2131 
   2132 		CLR32(sc, RADEON_CRTC_EXT_CNTL,
   2133 		    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2134 		    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2135 		CLR32(sc, RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B);
   2136 		PRINTREG(RADEON_CRTC_EXT_CNTL);
   2137 		PRINTREG(RADEON_CRTC_GEN_CNTL);
   2138 		PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   2139 		break;
   2140 
   2141 	case 1:
   2142 		PUT32(sc, RADEON_CRTC2_OFFSET, 0);
   2143 		PUT32(sc, RADEON_CRTC2_OFFSET_CNTL, 0);
   2144 		PUT32(sc, RADEON_CRTC2_PITCH, pitch);
   2145 		CLR32(sc, RADEON_DISP2_MERGE_CNTL, RADEON_DISP2_RGB_OFFSET_EN);
   2146 		CLR32(sc, RADEON_CRTC2_GEN_CNTL,
   2147 		    RADEON_CRTC2_VSYNC_DIS |
   2148 		    RADEON_CRTC2_HSYNC_DIS |
   2149 		    RADEON_CRTC2_DISP_DIS | RADEON_CRTC2_DISP_REQ_EN_B);
   2150 		PRINTREG(RADEON_CRTC2_GEN_CNTL);
   2151 		break;
   2152 	}
   2153 }
   2154 
   2155 int
   2156 radeonfb_isblank(struct radeonfb_display *dp)
   2157 {
   2158 	uint32_t	reg, mask;
   2159 
   2160 	if (dp->rd_crtcs[0].rc_number) {
   2161 		reg = RADEON_CRTC2_GEN_CNTL;
   2162 		mask = RADEON_CRTC2_DISP_DIS;
   2163 	} else {
   2164 		reg = RADEON_CRTC_EXT_CNTL;
   2165 		mask = RADEON_CRTC_DISPLAY_DIS;
   2166 	}
   2167 	return ((GET32(dp->rd_softc, reg) & mask) ? 1 : 0);
   2168 }
   2169 
   2170 void
   2171 radeonfb_blank(struct radeonfb_display *dp, int blank)
   2172 {
   2173 	struct radeonfb_softc	*sc = dp->rd_softc;
   2174 	uint32_t		reg, mask;
   2175 	uint32_t		fpreg, fpval;
   2176 	int			i;
   2177 
   2178 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   2179 
   2180 		if (dp->rd_crtcs[i].rc_number) {
   2181 			reg = RADEON_CRTC2_GEN_CNTL;
   2182 			mask = RADEON_CRTC2_DISP_DIS;
   2183 			fpreg = RADEON_FP2_GEN_CNTL;
   2184 			fpval = RADEON_FP2_ON;
   2185 		} else {
   2186 			reg = RADEON_CRTC_EXT_CNTL;
   2187 			mask = RADEON_CRTC_DISPLAY_DIS;
   2188 			fpreg = RADEON_FP_GEN_CNTL;
   2189 			fpval = RADEON_FP_FPON;
   2190 		}
   2191 
   2192 		if (blank) {
   2193 			SET32(sc, reg, mask);
   2194 			CLR32(sc, fpreg, fpval);
   2195 		} else {
   2196 			CLR32(sc, reg, mask);
   2197 			SET32(sc, fpreg, fpval);
   2198 		}
   2199 	}
   2200 	PRINTREG(RADEON_FP_GEN_CNTL);
   2201 	PRINTREG(RADEON_FP2_GEN_CNTL);
   2202 }
   2203 
   2204 void
   2205 radeonfb_init_screen(void *cookie, struct vcons_screen *scr, int existing,
   2206     long *defattr)
   2207 {
   2208 	struct radeonfb_display *dp = cookie;
   2209 	struct rasops_info *ri = &scr->scr_ri;
   2210 
   2211 	/* initialize font subsystem */
   2212 	wsfont_init();
   2213 
   2214 	DPRINTF(("init screen called, existing %d\n", existing));
   2215 
   2216 	ri->ri_depth = dp->rd_bpp;
   2217 	ri->ri_width = dp->rd_virtx;
   2218 	ri->ri_height = dp->rd_virty;
   2219 	ri->ri_stride = dp->rd_stride;
   2220 	ri->ri_flg = RI_CENTER;
   2221 	if (ri->ri_depth == 32) {
   2222 		ri->ri_flg |= RI_ENABLE_ALPHA;
   2223 	}
   2224 	switch (ri->ri_depth) {
   2225 		case 8:
   2226 			ri->ri_flg |= RI_ENABLE_ALPHA | RI_8BIT_IS_RGB;
   2227 			break;
   2228 		case 32:
   2229 			/* we run radeons in RGB even on SPARC hardware */
   2230 			ri->ri_rnum = 8;
   2231 			ri->ri_gnum = 8;
   2232 			ri->ri_bnum = 8;
   2233 			ri->ri_rpos = 16;
   2234 			ri->ri_gpos = 8;
   2235 			ri->ri_bpos = 0;
   2236 			break;
   2237 	}
   2238 
   2239 	ri->ri_bits = (void *)dp->rd_fbptr;
   2240 
   2241 #ifdef VCONS_DRAW_INTR
   2242 	scr->scr_flags |= VCONS_DONT_READ;
   2243 #endif
   2244 
   2245 	if (existing) {
   2246 		ri->ri_flg |= RI_CLEAR;
   2247 
   2248 		/* start a modeswitch now */
   2249 		radeonfb_modeswitch(dp);
   2250 	}
   2251 
   2252 	/*
   2253 	 * XXX: font selection should be based on properties, with some
   2254 	 * normal/reasonable default.
   2255 	 */
   2256 
   2257 	/* initialize and look for an initial font */
   2258 	rasops_init(ri, 0, 0);
   2259 	ri->ri_caps = WSSCREEN_WSCOLORS;
   2260 
   2261 	rasops_reconfig(ri, dp->rd_virty / ri->ri_font->fontheight,
   2262 		    dp->rd_virtx / ri->ri_font->fontwidth);
   2263 
   2264 	/* enable acceleration */
   2265 	dp->rd_putchar = ri->ri_ops.putchar;
   2266 	ri->ri_ops.copyrows = radeonfb_copyrows;
   2267 	ri->ri_ops.copycols = radeonfb_copycols;
   2268 	ri->ri_ops.eraserows = radeonfb_eraserows;
   2269 	ri->ri_ops.erasecols = radeonfb_erasecols;
   2270 	/* pick a putchar method based on font and Radeon model */
   2271 	if (ri->ri_font->stride < ri->ri_font->fontwidth) {
   2272 		/* got a bitmap font */
   2273 		if (IS_R300(dp->rd_softc)) {
   2274 			/*
   2275 			 * radeonfb_putchar() doesn't work right on some R3xx
   2276 			 * so we use software drawing here, the wrapper just
   2277 			 *  makes sure the engine is idle before scribbling
   2278 			 * into vram
   2279 			 */
   2280 			ri->ri_ops.putchar = radeonfb_putchar_wrapper;
   2281 		} else {
   2282 			ri->ri_ops.putchar = radeonfb_putchar;
   2283 		}
   2284 	} else {
   2285 		/* got an alpha font */
   2286 		switch(ri->ri_depth) {
   2287 			case 32:
   2288 				ri->ri_ops.putchar = radeonfb_putchar_aa32;
   2289 				break;
   2290 			case 8:
   2291 				ri->ri_ops.putchar = radeonfb_putchar_aa8;
   2292 				break;
   2293 			default:
   2294 				/* XXX this should never happen */
   2295 				panic("%s: depth is not 8 or 32 but we got an alpha font?!",
   2296 				    __func__);
   2297 		}
   2298 	}
   2299 	ri->ri_ops.cursor = radeonfb_cursor;
   2300 }
   2301 
   2302 void
   2303 radeonfb_set_fbloc(struct radeonfb_softc *sc)
   2304 {
   2305 	uint32_t	gen, ext, gen2 = 0;
   2306 	uint32_t	agploc, aperbase, apersize, mcfbloc;
   2307 
   2308 	gen = GET32(sc, RADEON_CRTC_GEN_CNTL);
   2309 	ext = GET32(sc, RADEON_CRTC_EXT_CNTL);
   2310 	agploc = GET32(sc, RADEON_MC_AGP_LOCATION);
   2311 	aperbase = GET32(sc, RADEON_CONFIG_APER_0_BASE);
   2312 	apersize = GET32(sc, RADEON_CONFIG_APER_SIZE);
   2313 
   2314 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISP_REQ_EN_B);
   2315 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISPLAY_DIS);
   2316 	//PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISPLAY_DIS);
   2317 	//PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISP_REQ_EN_B);
   2318 
   2319 	if (HAS_CRTC2(sc)) {
   2320 		gen2 = GET32(sc, RADEON_CRTC2_GEN_CNTL);
   2321 		PUT32(sc, RADEON_CRTC2_GEN_CNTL,
   2322 		    gen2 | RADEON_CRTC2_DISP_REQ_EN_B);
   2323 	}
   2324 
   2325 	delay(100000);
   2326 
   2327 	mcfbloc = (aperbase >> 16) |
   2328 	    ((aperbase + (apersize - 1)) & 0xffff0000);
   2329 
   2330 	sc->sc_aperbase = (mcfbloc & 0xffff) << 16;
   2331 	sc->sc_memsz = apersize;
   2332 
   2333 	if (((agploc & 0xffff) << 16) !=
   2334 	    ((mcfbloc & 0xffff0000U) + 0x10000)) {
   2335 		agploc = mcfbloc & 0xffff0000U;
   2336 		agploc |= ((agploc + 0x10000) >> 16);
   2337 	}
   2338 
   2339 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2340 
   2341 	PUT32(sc, RADEON_MC_FB_LOCATION, mcfbloc);
   2342 	PUT32(sc, RADEON_MC_AGP_LOCATION, agploc);
   2343 
   2344 	DPRINTF(("aperbase = %u\n", aperbase));
   2345 	PRINTREG(RADEON_MC_FB_LOCATION);
   2346 	PRINTREG(RADEON_MC_AGP_LOCATION);
   2347 
   2348 	PUT32(sc, RADEON_DISPLAY_BASE_ADDR, sc->sc_aperbase);
   2349 
   2350 	if (HAS_CRTC2(sc))
   2351 		PUT32(sc, RADEON_DISPLAY2_BASE_ADDR, sc->sc_aperbase);
   2352 
   2353 	PUT32(sc, RADEON_OV0_BASE_ADDR, sc->sc_aperbase);
   2354 
   2355 #if 0
   2356 	/* XXX: what is this AGP garbage? :-) */
   2357 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2358 #endif
   2359 
   2360 	delay(100000);
   2361 
   2362 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen);
   2363 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext);
   2364 
   2365 	if (HAS_CRTC2(sc))
   2366 		PUT32(sc, RADEON_CRTC2_GEN_CNTL, gen2);
   2367 }
   2368 
   2369 void
   2370 radeonfb_init_misc(struct radeonfb_softc *sc)
   2371 {
   2372 	PUT32(sc, RADEON_BUS_CNTL,
   2373 	    RADEON_BUS_MASTER_DIS |
   2374 	    RADEON_BUS_PREFETCH_MODE_ACT |
   2375 	    RADEON_BUS_PCI_READ_RETRY_EN |
   2376 	    RADEON_BUS_PCI_WRT_RETRY_EN |
   2377 	    (3 << RADEON_BUS_RETRY_WS_SHIFT) |
   2378 	    RADEON_BUS_MSTR_RD_MULT |
   2379 	    RADEON_BUS_MSTR_RD_LINE |
   2380 	    RADEON_BUS_RD_DISCARD_EN |
   2381 	    RADEON_BUS_MSTR_DISCONNECT_EN |
   2382 	    RADEON_BUS_READ_BURST);
   2383 
   2384 	PUT32(sc, RADEON_BUS_CNTL1, 0xf0);
   2385 	/* PUT32(sc, RADEON_SEPROM_CNTL1, 0x09ff0000); */
   2386 	PUT32(sc, RADEON_FCP_CNTL, RADEON_FCP0_SRC_GND);
   2387 	PUT32(sc, RADEON_RBBM_CNTL,
   2388 	    (3 << RADEON_RB_SETTLE_SHIFT) |
   2389 	    (4 << RADEON_ABORTCLKS_HI_SHIFT) |
   2390 	    (4 << RADEON_ABORTCLKS_CP_SHIFT) |
   2391 	    (4 << RADEON_ABORTCLKS_CFIFO_SHIFT));
   2392 
   2393 	/* XXX: figure out what these mean! */
   2394 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2395 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2396 	//PUT32(sc, RADEON_DISP_MISC_CNTL, 0x5bb00400);
   2397 
   2398 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2399 	PUT32(sc, RADEON_GEN_INT_STATUS, GET32(sc, RADEON_GEN_INT_STATUS));
   2400 }
   2401 
   2402 /*
   2403  * This loads a linear color map for true color.
   2404  */
   2405 void
   2406 radeonfb_init_palette(struct radeonfb_softc *sc, int crtc)
   2407 {
   2408 	int		i;
   2409 	uint32_t	vclk;
   2410 
   2411 #define	DAC_WIDTH ((1 << 10) - 1)
   2412 #define	CLUT_WIDTH ((1 << 8) - 1)
   2413 #define	CLUT_COLOR(i)      ((i * DAC_WIDTH * 2 / CLUT_WIDTH + 1) / 2)
   2414 
   2415 	vclk = GETPLL(sc, RADEON_VCLK_ECP_CNTL);
   2416 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk & ~RADEON_PIXCLK_DAC_ALWAYS_ONb);
   2417 
   2418 	if (crtc)
   2419 		SET32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2420 	else
   2421 		CLR32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2422 
   2423 	PUT32(sc, RADEON_PALETTE_INDEX, 0);
   2424 	if (sc->sc_displays[crtc].rd_bpp == 0)
   2425 		sc->sc_displays[crtc].rd_bpp = RADEONFB_DEFAULT_DEPTH;
   2426 
   2427 	if (sc->sc_displays[crtc].rd_bpp == 8) {
   2428 		/* ANSI palette */
   2429 		int j = 0;
   2430 		uint32_t tmp, r, g, b;
   2431 
   2432                 for (i = 0; i <= CLUT_WIDTH; ++i) {
   2433     			tmp = i & 0xe0;
   2434 			/*
   2435 			 * replicate bits so 0xe0 maps to a red value of 0xff
   2436 			 * in order to make white look actually white
   2437 			 */
   2438 			tmp |= (tmp >> 3) | (tmp >> 6);
   2439 			r = tmp;
   2440 
   2441 			tmp = (i & 0x1c) << 3;
   2442 			tmp |= (tmp >> 3) | (tmp >> 6);
   2443 			g = tmp;
   2444 
   2445 			tmp = (i & 0x03) << 6;
   2446 			tmp |= tmp >> 2;
   2447 			tmp |= tmp >> 4;
   2448 			b = tmp;
   2449             	PUT32(sc, RADEON_PALETTE_30_DATA,
   2450 				(r << 22) |
   2451 				(g << 12) |
   2452 				(b << 2));
   2453 			j += 3;
   2454 		}
   2455 	} else {
   2456 		/* linear ramp */
   2457 		for (i = 0; i <= CLUT_WIDTH; ++i) {
   2458 			PUT32(sc, RADEON_PALETTE_30_DATA,
   2459 			    (CLUT_COLOR(i) << 10) |
   2460 			    (CLUT_COLOR(i) << 20) |
   2461 			    (CLUT_COLOR(i)));
   2462 		}
   2463 	}
   2464 
   2465 	CLR32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2466 	PRINTREG(RADEON_DAC_CNTL2);
   2467 
   2468 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk);
   2469 }
   2470 
   2471 /*
   2472  * Bugs in some R300 hardware requires this when accessing CLOCK_CNTL_INDEX.
   2473  */
   2474 void
   2475 radeonfb_r300cg_workaround(struct radeonfb_softc *sc)
   2476 {
   2477 	uint32_t	tmp, save;
   2478 
   2479 	save = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   2480 	tmp = save & ~(0x3f | RADEON_PLL_WR_EN);
   2481 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, tmp);
   2482 	tmp = GET32(sc, RADEON_CLOCK_CNTL_DATA);
   2483 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, save);
   2484 }
   2485 
   2486 /*
   2487  * Acceleration entry points.
   2488  */
   2489 
   2490 /* this one draws characters using bitmap fonts */
   2491 static void
   2492 radeonfb_putchar(void *cookie, int row, int col, u_int c, long attr)
   2493 {
   2494 	struct rasops_info	*ri = cookie;
   2495 	struct vcons_screen	*scr = ri->ri_hw;
   2496 	struct radeonfb_display	*dp = scr->scr_cookie;
   2497 	struct radeonfb_softc	*sc = dp->rd_softc;
   2498 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2499 	uint32_t		w, h;
   2500 	int			xd, yd, offset, i;
   2501 	uint32_t		bg, fg, gmc;
   2502 	uint32_t		reg;
   2503 	uint8_t			*data8;
   2504 	uint16_t		*data16;
   2505 	void			*data;
   2506 
   2507 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2508 		return;
   2509 
   2510 	if (!CHAR_IN_FONT(c, font))
   2511 		return;
   2512 
   2513 	w = font->fontwidth;
   2514 	h = font->fontheight;
   2515 
   2516 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2517 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2518 
   2519 	xd = ri->ri_xorigin + col * w;
   2520 	yd = ri->ri_yorigin + row * h;
   2521 
   2522 	if (c == 0x20) {
   2523 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   2524 		return;
   2525 	}
   2526 	data = WSFONT_GLYPH(c, font);
   2527 
   2528 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2529 
   2530 	radeonfb_wait_fifo(sc, 9);
   2531 
   2532 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2533 	    RADEON_GMC_BRUSH_NONE |
   2534 	    RADEON_GMC_SRC_DATATYPE_MONO_FG_BG |
   2535 	    RADEON_GMC_DST_CLIPPING |
   2536 	    RADEON_ROP3_S |
   2537 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2538 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2539 	    RADEON_GMC_WR_MSK_DIS |
   2540 	    gmc);
   2541 
   2542 	PUT32(sc, RADEON_SC_LEFT, xd);
   2543 	PUT32(sc, RADEON_SC_RIGHT, xd + w);
   2544 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, fg);
   2545 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, bg);
   2546 	PUT32(sc, RADEON_DP_CNTL,
   2547 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2548 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2549 
   2550 	PUT32(sc, RADEON_SRC_X_Y, 0);
   2551 	offset = 32 - (font->stride << 3);
   2552 	PUT32(sc, RADEON_DST_X_Y, ((xd - offset) << 16) | yd);
   2553 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (32 << 16) | h);
   2554 
   2555 	radeonfb_wait_fifo(sc, h);
   2556 	switch (font->stride) {
   2557 		case 1: {
   2558 			data8 = data;
   2559 			for (i = 0; i < h; i++) {
   2560 				reg = *data8;
   2561 				bus_space_write_stream_4(sc->sc_regt,
   2562 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   2563 				data8++;
   2564 			}
   2565 			break;
   2566 		}
   2567 		case 2: {
   2568 			data16 = data;
   2569 			for (i = 0; i < h; i++) {
   2570 				reg = *data16;
   2571 				bus_space_write_stream_4(sc->sc_regt,
   2572 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   2573 				data16++;
   2574 			}
   2575 			break;
   2576 		}
   2577 	}
   2578 }
   2579 
   2580 /* ... while this one is for anti-aliased ones */
   2581 static void
   2582 radeonfb_putchar_aa32(void *cookie, int row, int col, u_int c, long attr)
   2583 {
   2584 	struct rasops_info	*ri = cookie;
   2585 	struct vcons_screen	*scr = ri->ri_hw;
   2586 	struct radeonfb_display	*dp = scr->scr_cookie;
   2587 	struct radeonfb_softc	*sc = dp->rd_softc;
   2588 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2589 	uint32_t		bg, fg, gmc;
   2590 	uint8_t			*data;
   2591 	int			w, h, xd, yd;
   2592 	int 			i, r, g, b, aval;
   2593 	int 			rf, gf, bf, rb, gb, bb;
   2594 	uint32_t 		pixel;
   2595 	int rv;
   2596 
   2597 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2598 		return;
   2599 
   2600 	if (!CHAR_IN_FONT(c, font))
   2601 		return;
   2602 
   2603 	w = font->fontwidth;
   2604 	h = font->fontheight;
   2605 
   2606 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2607 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2608 
   2609 	xd = ri->ri_xorigin + col * w;
   2610 	yd = ri->ri_yorigin + row * h;
   2611 
   2612 	if (c == 0x20) {
   2613 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   2614 		return;
   2615 	}
   2616 	rv = glyphcache_try(&dp->rd_gc, c, xd, yd, attr);
   2617 	if (rv == GC_OK)
   2618 		return;
   2619 
   2620 	data = WSFONT_GLYPH(c, font);
   2621 
   2622 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2623 
   2624 	radeonfb_wait_fifo(sc, 5);
   2625 
   2626 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2627 	    RADEON_GMC_BRUSH_NONE |
   2628 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2629 	    RADEON_ROP3_S |
   2630 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2631 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2632 	    RADEON_GMC_WR_MSK_DIS |
   2633 	    gmc);
   2634 
   2635 	PUT32(sc, RADEON_DP_CNTL,
   2636 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2637 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2638 
   2639 	PUT32(sc, RADEON_SRC_X_Y, 0);
   2640 	PUT32(sc, RADEON_DST_X_Y, (xd << 16) | yd);
   2641 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (w << 16) | h);
   2642 
   2643 	rf = (fg >> 16) & 0xff;
   2644 	rb = (bg >> 16) & 0xff;
   2645 	gf = (fg >> 8) & 0xff;
   2646 	gb = (bg >> 8) & 0xff;
   2647 	bf =  fg & 0xff;
   2648 	bb =  bg & 0xff;
   2649 
   2650 	/*
   2651 	 * I doubt we can upload data faster than even the slowest Radeon
   2652 	 * could process them, especially when doing the alpha blending stuff
   2653 	 * along the way, so just make sure there's some room in the FIFO and
   2654 	 * then hammer away
   2655 	 * As it turns out we can, so make periodic stops to let the FIFO
   2656 	 * drain.
   2657 	 */
   2658 	radeonfb_wait_fifo(sc, 20);
   2659 	for (i = 0; i < ri->ri_fontscale; i++) {
   2660 		aval = *data;
   2661 		data++;
   2662 		if (aval == 0) {
   2663 			pixel = bg;
   2664 		} else if (aval == 255) {
   2665 			pixel = fg;
   2666 		} else {
   2667 			r = aval * rf + (255 - aval) * rb;
   2668 			g = aval * gf + (255 - aval) * gb;
   2669 			b = aval * bf + (255 - aval) * bb;
   2670 			pixel = (r & 0xff00) << 8 |
   2671 			        (g & 0xff00) |
   2672 			        (b & 0xff00) >> 8;
   2673 		}
   2674 		if (i & 16)
   2675 			radeonfb_wait_fifo(sc, 20);
   2676 		PUT32(sc, RADEON_HOST_DATA0, pixel);
   2677 	}
   2678 	if (rv == GC_ADD)
   2679 		glyphcache_add(&dp->rd_gc, c, xd, yd);
   2680 }
   2681 
   2682 static void
   2683 radeonfb_putchar_aa8(void *cookie, int row, int col, u_int c, long attr)
   2684 {
   2685 	struct rasops_info	*ri = cookie;
   2686 	struct vcons_screen	*scr = ri->ri_hw;
   2687 	struct radeonfb_display	*dp = scr->scr_cookie;
   2688 	struct radeonfb_softc	*sc = dp->rd_softc;
   2689 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2690 	uint32_t bg, latch = 0, bg8, fg8, pixel, gmc;
   2691 	int i, x, y, wi, he, r, g, b, aval;
   2692 	int r1, g1, b1, r0, g0, b0, fgo, bgo;
   2693 	uint8_t *data8;
   2694 	int rv, cnt;
   2695 
   2696 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2697 		return;
   2698 
   2699 	if (!CHAR_IN_FONT(c, font))
   2700 		return;
   2701 
   2702 	wi = font->fontwidth;
   2703 	he = font->fontheight;
   2704 
   2705 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2706 
   2707 	x = ri->ri_xorigin + col * wi;
   2708 	y = ri->ri_yorigin + row * he;
   2709 
   2710 	if (c == 0x20) {
   2711 		radeonfb_rectfill(dp, x, y, wi, he, bg);
   2712 		return;
   2713 	}
   2714 	rv = glyphcache_try(&dp->rd_gc, c, x, y, attr);
   2715 	if (rv == GC_OK)
   2716 		return;
   2717 
   2718 	data8 = WSFONT_GLYPH(c, font);
   2719 
   2720 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2721 
   2722 	radeonfb_wait_fifo(sc, 5);
   2723 
   2724 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2725 	    RADEON_GMC_BRUSH_NONE |
   2726 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2727 	    RADEON_ROP3_S |
   2728 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2729 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2730 	    RADEON_GMC_WR_MSK_DIS |
   2731 	    gmc);
   2732 
   2733 	PUT32(sc, RADEON_DP_CNTL,
   2734 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2735 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2736 
   2737 	PUT32(sc, RADEON_SRC_X_Y, 0);
   2738 	PUT32(sc, RADEON_DST_X_Y, (x << 16) | y);
   2739 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (wi << 16) | he);
   2740 
   2741 	/*
   2742 	 * we need the RGB colours here, so get offsets into rasops_cmap
   2743 	 */
   2744 	fgo = ((attr >> 24) & 0xf) * 3;
   2745 	bgo = ((attr >> 16) & 0xf) * 3;
   2746 
   2747 	r0 = rasops_cmap[bgo];
   2748 	r1 = rasops_cmap[fgo];
   2749 	g0 = rasops_cmap[bgo + 1];
   2750 	g1 = rasops_cmap[fgo + 1];
   2751 	b0 = rasops_cmap[bgo + 2];
   2752 	b1 = rasops_cmap[fgo + 2];
   2753 #define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6))
   2754 	bg8 = R3G3B2(r0, g0, b0);
   2755 	fg8 = R3G3B2(r1, g1, b1);
   2756 
   2757 	radeonfb_wait_fifo(sc, 20);
   2758 	cnt = 0;
   2759 	for (i = 0; i < ri->ri_fontscale; i++) {
   2760 		aval = *data8;
   2761 		if (aval == 0) {
   2762 			pixel = bg8;
   2763 		} else if (aval == 255) {
   2764 			pixel = fg8;
   2765 		} else {
   2766 			r = aval * r1 + (255 - aval) * r0;
   2767 			g = aval * g1 + (255 - aval) * g0;
   2768 			b = aval * b1 + (255 - aval) * b0;
   2769 			pixel = ((r & 0xe000) >> 8) |
   2770 				((g & 0xe000) >> 11) |
   2771 				((b & 0xc000) >> 14);
   2772 		}
   2773 		latch = (latch << 8) | pixel;
   2774 		/* write in 32bit chunks */
   2775 		if ((i & 3) == 3) {
   2776 			PUT32S(sc, RADEON_HOST_DATA0, latch);
   2777 			/*
   2778 			 * not strictly necessary, old data should be shifted
   2779 			 * out
   2780 			 */
   2781 			latch = 0;
   2782 			cnt++;
   2783 			if (cnt > 16) {
   2784 				cnt = 0;
   2785 				radeonfb_wait_fifo(sc, 20);
   2786 			}
   2787 		}
   2788 		data8++;
   2789 	}
   2790 	/* if we have pixels left in latch write them out */
   2791 	if ((i & 3) != 0) {
   2792 		/*
   2793 		 * radeon is weird - apparently leftover pixels are written
   2794 		 * from the middle, not from the left as everything else
   2795 		 */
   2796 		PUT32(sc, RADEON_HOST_DATA0, latch);
   2797 	}
   2798 
   2799 	if (rv == GC_ADD)
   2800 		glyphcache_add(&dp->rd_gc, c, x, y);
   2801 }
   2802 
   2803 /*
   2804  * wrapper for software character drawing
   2805  * just sync the engine and call rasops*_putchar()
   2806  */
   2807 
   2808 static void
   2809 radeonfb_putchar_wrapper(void *cookie, int row, int col, u_int c, long attr)
   2810 {
   2811 	struct rasops_info	*ri = cookie;
   2812 	struct vcons_screen	*scr = ri->ri_hw;
   2813 	struct radeonfb_display	*dp = scr->scr_cookie;
   2814 
   2815 	radeonfb_engine_idle(dp->rd_softc);
   2816 	dp->rd_putchar(ri, row, col, c, attr);
   2817 }
   2818 
   2819 static void
   2820 radeonfb_eraserows(void *cookie, int row, int nrows, long fillattr)
   2821 {
   2822 	struct rasops_info	*ri = cookie;
   2823 	struct vcons_screen	*scr = ri->ri_hw;
   2824 	struct radeonfb_display	*dp = scr->scr_cookie;
   2825 	uint32_t		x, y, w, h, fg, bg, ul;
   2826 
   2827 	/* XXX: check for full emulation mode? */
   2828 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2829 		x = ri->ri_xorigin;
   2830 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   2831 		w = ri->ri_emuwidth;
   2832 		h = ri->ri_font->fontheight * nrows;
   2833 
   2834 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   2835 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   2836 	}
   2837 }
   2838 
   2839 static void
   2840 radeonfb_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
   2841 {
   2842 	struct rasops_info	*ri = cookie;
   2843 	struct vcons_screen	*scr = ri->ri_hw;
   2844 	struct radeonfb_display	*dp = scr->scr_cookie;
   2845 	uint32_t		x, ys, yd, w, h;
   2846 
   2847 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2848 		x = ri->ri_xorigin;
   2849 		ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow;
   2850 		yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow;
   2851 		w = ri->ri_emuwidth;
   2852 		h = ri->ri_font->fontheight * nrows;
   2853 		radeonfb_bitblt(dp, x, ys, x, yd, w, h,
   2854 		    RADEON_ROP3_S);
   2855 	}
   2856 }
   2857 
   2858 static void
   2859 radeonfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
   2860 {
   2861 	struct rasops_info	*ri = cookie;
   2862 	struct vcons_screen	*scr = ri->ri_hw;
   2863 	struct radeonfb_display	*dp = scr->scr_cookie;
   2864 	uint32_t		xs, xd, y, w, h;
   2865 
   2866 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2867 		xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol;
   2868 		xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol;
   2869 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   2870 		w = ri->ri_font->fontwidth * ncols;
   2871 		h = ri->ri_font->fontheight;
   2872 		radeonfb_bitblt(dp, xs, y, xd, y, w, h,
   2873 		    RADEON_ROP3_S);
   2874 	}
   2875 }
   2876 
   2877 static void
   2878 radeonfb_erasecols(void *cookie, int row, int startcol, int ncols,
   2879     long fillattr)
   2880 {
   2881 	struct rasops_info	*ri = cookie;
   2882 	struct vcons_screen	*scr = ri->ri_hw;
   2883 	struct radeonfb_display	*dp = scr->scr_cookie;
   2884 	uint32_t		x, y, w, h, fg, bg, ul;
   2885 
   2886 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2887 		x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol;
   2888 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   2889 		w = ri->ri_font->fontwidth * ncols;
   2890 		h = ri->ri_font->fontheight;
   2891 
   2892 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   2893 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   2894 	}
   2895 }
   2896 
   2897 static void
   2898 radeonfb_cursor(void *cookie, int on, int row, int col)
   2899 {
   2900 	struct rasops_info *ri = cookie;
   2901 	struct vcons_screen *scr = ri->ri_hw;
   2902 	struct radeonfb_display	*dp = scr->scr_cookie;
   2903 	int x, y, wi, he;
   2904 
   2905 	wi = ri->ri_font->fontwidth;
   2906 	he = ri->ri_font->fontheight;
   2907 
   2908 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   2909 		x = ri->ri_ccol * wi + ri->ri_xorigin;
   2910 		y = ri->ri_crow * he + ri->ri_yorigin;
   2911 		/* first turn off the old cursor */
   2912 		if (ri->ri_flg & RI_CURSOR) {
   2913 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   2914 			    RADEON_ROP3_Dn);
   2915 			ri->ri_flg &= ~RI_CURSOR;
   2916 		}
   2917 		ri->ri_crow = row;
   2918 		ri->ri_ccol = col;
   2919 		/* then (possibly) turn on the new one */
   2920 		if (on) {
   2921 			x = ri->ri_ccol * wi + ri->ri_xorigin;
   2922 			y = ri->ri_crow * he + ri->ri_yorigin;
   2923 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   2924 			    RADEON_ROP3_Dn);
   2925 			ri->ri_flg |= RI_CURSOR;
   2926 		}
   2927 	} else {
   2928 		scr->scr_ri.ri_crow = row;
   2929 		scr->scr_ri.ri_ccol = col;
   2930 		scr->scr_ri.ri_flg &= ~RI_CURSOR;
   2931 	}
   2932 }
   2933 
   2934 /*
   2935  * Underlying acceleration support.
   2936  */
   2937 
   2938 static void
   2939 radeonfb_rectfill(struct radeonfb_display *dp, int dstx, int dsty,
   2940     int width, int height, uint32_t color)
   2941 {
   2942 	struct radeonfb_softc	*sc = dp->rd_softc;
   2943 	uint32_t		gmc;
   2944 
   2945 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2946 
   2947 	radeonfb_wait_fifo(sc, 6);
   2948 
   2949 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2950 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   2951 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2952 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2953 	    RADEON_ROP3_P | gmc);
   2954 
   2955 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, color);
   2956 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   2957 	PUT32(sc, RADEON_DP_CNTL,
   2958 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2959 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2960 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   2961 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   2962 
   2963 }
   2964 
   2965 static void
   2966 radeonfb_bitblt(void *cookie, int srcx, int srcy,
   2967     int dstx, int dsty, int width, int height, int rop)
   2968 {
   2969 	struct radeonfb_display *dp = cookie;
   2970 	struct radeonfb_softc	*sc = dp->rd_softc;
   2971 	uint32_t		gmc;
   2972 	uint32_t		dir;
   2973 
   2974 	if (dsty < srcy) {
   2975 		dir = RADEON_DST_Y_TOP_TO_BOTTOM;
   2976 	} else {
   2977 		srcy += height - 1;
   2978 		dsty += height - 1;
   2979 		dir = 0;
   2980 	}
   2981 	if (dstx < srcx) {
   2982 		dir |= RADEON_DST_X_LEFT_TO_RIGHT;
   2983 	} else {
   2984 		srcx += width - 1;
   2985 		dstx += width - 1;
   2986 	}
   2987 
   2988 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2989 
   2990 	radeonfb_wait_fifo(sc, 6);
   2991 
   2992 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2993 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   2994 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   2995 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2996 	    RADEON_DP_SRC_SOURCE_MEMORY |
   2997 	    rop | gmc);
   2998 
   2999 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3000 	PUT32(sc, RADEON_DP_CNTL, dir);
   3001 	PUT32(sc, RADEON_SRC_Y_X, (srcy << 16) | srcx);
   3002 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   3003 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   3004 }
   3005 
   3006 static void
   3007 radeonfb_engine_idle(struct radeonfb_softc *sc)
   3008 {
   3009 
   3010 	radeonfb_wait_fifo(sc, 64);
   3011 	while ((GET32(sc, RADEON_RBBM_STATUS) &
   3012 			RADEON_RBBM_ACTIVE) != 0);
   3013 	radeonfb_engine_flush(sc);
   3014 }
   3015 
   3016 static inline void
   3017 radeonfb_wait_fifo(struct radeonfb_softc *sc, int n)
   3018 {
   3019 	int	i;
   3020 
   3021 	for (i = RADEON_TIMEOUT; i; i--) {
   3022 		if ((GET32(sc, RADEON_RBBM_STATUS) &
   3023 			RADEON_RBBM_FIFOCNT_MASK) >= n)
   3024 			return;
   3025 	}
   3026 #ifdef	DIAGNOSTIC
   3027 	if (!i)
   3028 		printf("%s: timed out waiting for fifo (%x)\n",
   3029 		    XNAME(sc), GET32(sc, RADEON_RBBM_STATUS));
   3030 #endif
   3031 }
   3032 
   3033 static void
   3034 radeonfb_engine_flush(struct radeonfb_softc *sc)
   3035 {
   3036 	int	i = 0;
   3037 
   3038 	if (IS_R300(sc)) {
   3039 		SET32(sc, R300_DSTCACHE_CTLSTAT, R300_RB2D_DC_FLUSH_ALL);
   3040 		while (GET32(sc, R300_DSTCACHE_CTLSTAT) & R300_RB2D_DC_BUSY) {
   3041 			i++;
   3042 		}
   3043 	} else {
   3044 		SET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT,
   3045 		    RADEON_RB2D_DC_FLUSH_ALL);
   3046 		while (GET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT) &
   3047 			RADEON_RB2D_DC_BUSY) {
   3048 			i++;
   3049 		}
   3050 	}
   3051 #ifdef DIAGNOSTIC
   3052 	if (i > RADEON_TIMEOUT)
   3053 		printf("%s: engine flush timed out!\n", XNAME(sc));
   3054 #endif
   3055 }
   3056 
   3057 static inline void
   3058 radeonfb_unclip(struct radeonfb_softc *sc)
   3059 {
   3060 
   3061 	radeonfb_wait_fifo(sc, 2);
   3062 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   3063 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   3064 }
   3065 
   3066 static void
   3067 radeonfb_engine_init(struct radeonfb_display *dp)
   3068 {
   3069 	struct radeonfb_softc	*sc = dp->rd_softc;
   3070 	uint32_t		pitch;
   3071 	volatile uint32_t	junk;
   3072 
   3073 	/* no 3D */
   3074 	PUT32(sc, RADEON_RB3D_CNTL, 0);
   3075 
   3076 	radeonfb_engine_reset(sc);
   3077 	pitch = ((dp->rd_virtx * (dp->rd_bpp / 8) + 0x3f)) >> 6;
   3078 
   3079 	radeonfb_wait_fifo(sc, 1);
   3080 	if (!IS_R300(sc))
   3081 		PUT32(sc, RADEON_RB2D_DSTCACHE_MODE, 0);
   3082 
   3083 	radeonfb_wait_fifo(sc, 3);
   3084 	PUT32(sc, RADEON_DEFAULT_PITCH_OFFSET,
   3085 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   3086 
   3087 
   3088 	PUT32(sc, RADEON_DST_PITCH_OFFSET,
   3089 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   3090 	PUT32(sc, RADEON_SRC_PITCH_OFFSET,
   3091 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   3092 
   3093 	radeonfb_wait_fifo(sc, 1);
   3094 #if _BYTE_ORDER == _BIG_ENDIAN
   3095 	SET32(sc, RADEON_DP_DATATYPE, RADEON_HOST_BIG_ENDIAN_EN);
   3096 #else
   3097 	CLR32(sc, RADEON_DP_DATATYPE, RADEON_HOST_BIG_ENDIAN_EN);
   3098 #endif
   3099 	junk = GET32(sc, RADEON_DP_DATATYPE);
   3100 
   3101 	/* default scissors -- no clipping */
   3102 	radeonfb_wait_fifo(sc, 1);
   3103 	PUT32(sc, RADEON_DEFAULT_SC_BOTTOM_RIGHT,
   3104 	    RADEON_DEFAULT_SC_RIGHT_MAX | RADEON_DEFAULT_SC_BOTTOM_MAX);
   3105 
   3106 	radeonfb_wait_fifo(sc, 1);
   3107 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3108 	    (dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT) |
   3109 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3110 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3111 	    RADEON_GMC_SRC_DATATYPE_COLOR);
   3112 
   3113 	radeonfb_wait_fifo(sc, 10);
   3114 	PUT32(sc, RADEON_DST_LINE_START, 0);
   3115 	PUT32(sc, RADEON_DST_LINE_END, 0);
   3116 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, 0xffffffff);
   3117 	PUT32(sc, RADEON_DP_BRUSH_BKGD_CLR, 0);
   3118 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, 0xffffffff);
   3119 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, 0);
   3120 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3121 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   3122 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   3123 	PUT32(sc, RADEON_AUX_SC_CNTL, 0);
   3124 	radeonfb_engine_idle(sc);
   3125 }
   3126 
   3127 static void
   3128 radeonfb_engine_reset(struct radeonfb_softc *sc)
   3129 {
   3130 	uint32_t	hpc, rbbm, mclkcntl, clkindex;
   3131 
   3132 	radeonfb_engine_flush(sc);
   3133 
   3134 	clkindex = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   3135 	if (HAS_R300CG(sc))
   3136 		radeonfb_r300cg_workaround(sc);
   3137 	mclkcntl = GETPLL(sc, RADEON_MCLK_CNTL);
   3138 
   3139 	/*
   3140 	 * According to comments in XFree code, resetting the HDP via
   3141 	 * the RBBM_SOFT_RESET can cause bad behavior on some systems.
   3142 	 * So we use HOST_PATH_CNTL instead.
   3143 	 */
   3144 
   3145 	hpc = GET32(sc, RADEON_HOST_PATH_CNTL);
   3146 	rbbm = GET32(sc, RADEON_RBBM_SOFT_RESET);
   3147 	if (IS_R300(sc)) {
   3148 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   3149 		    RADEON_SOFT_RESET_CP |
   3150 		    RADEON_SOFT_RESET_HI |
   3151 		    RADEON_SOFT_RESET_E2);
   3152 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3153 		PUT32(sc, RADEON_RBBM_SOFT_RESET, 0);
   3154 		/*
   3155 		 * XXX: this bit is not defined in any ATI docs I have,
   3156 		 * nor in the XFree code, but XFree does it.  Why?
   3157 		 */
   3158 		SET32(sc, RADEON_RB2D_DSTCACHE_MODE, (1<<17));
   3159 	} else {
   3160 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   3161 		    RADEON_SOFT_RESET_CP |
   3162 		    RADEON_SOFT_RESET_SE |
   3163 		    RADEON_SOFT_RESET_RE |
   3164 		    RADEON_SOFT_RESET_PP |
   3165 		    RADEON_SOFT_RESET_E2 |
   3166 		    RADEON_SOFT_RESET_RB);
   3167 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3168 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm &
   3169 		    ~(RADEON_SOFT_RESET_CP |
   3170 			RADEON_SOFT_RESET_SE |
   3171 			RADEON_SOFT_RESET_RE |
   3172 			RADEON_SOFT_RESET_PP |
   3173 			RADEON_SOFT_RESET_E2 |
   3174 			RADEON_SOFT_RESET_RB));
   3175 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3176 	}
   3177 
   3178 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc | RADEON_HDP_SOFT_RESET);
   3179 	GET32(sc, RADEON_HOST_PATH_CNTL);
   3180 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc);
   3181 
   3182 	if (IS_R300(sc))
   3183 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm);
   3184 
   3185 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, clkindex);
   3186 	PUTPLL(sc, RADEON_MCLK_CNTL, mclkcntl);
   3187 
   3188 	if (HAS_R300CG(sc))
   3189 		radeonfb_r300cg_workaround(sc);
   3190 }
   3191 
   3192 static int
   3193 radeonfb_set_curpos(struct radeonfb_display *dp, struct wsdisplay_curpos *pos)
   3194 {
   3195 	int		x, y;
   3196 
   3197 	x = pos->x;
   3198 	y = pos->y;
   3199 
   3200 	/*
   3201 	 * This doesn't let a cursor move off the screen.  I'm not
   3202 	 * sure if this will have negative effects for e.g. Xinerama.
   3203 	 * I'd guess Xinerama handles it by changing the cursor shape,
   3204 	 * but that needs verification.
   3205 	 */
   3206 	if (x >= dp->rd_virtx)
   3207 		x = dp->rd_virtx - 1;
   3208 	if (x < 0)
   3209 		x = 0;
   3210 	if (y >= dp->rd_virty)
   3211 		y = dp->rd_virty - 1;
   3212 	if (y < 0)
   3213 		y = 0;
   3214 
   3215 	dp->rd_cursor.rc_pos.x = x;
   3216 	dp->rd_cursor.rc_pos.y = y;
   3217 
   3218 	radeonfb_cursor_position(dp);
   3219 	return 0;
   3220 }
   3221 
   3222 static int
   3223 radeonfb_set_cursor(struct radeonfb_display *dp, struct wsdisplay_cursor *wc)
   3224 {
   3225 	unsigned	flags;
   3226 
   3227 	uint8_t		r[2], g[2], b[2];
   3228 	unsigned	index, count;
   3229 	int		i, err;
   3230 	int		pitch, size;
   3231 	struct radeonfb_cursor	nc;
   3232 
   3233 	flags = wc->which;
   3234 
   3235 	/* copy old values */
   3236 	nc = dp->rd_cursor;
   3237 
   3238 	if (flags & WSDISPLAY_CURSOR_DOCMAP) {
   3239 		index = wc->cmap.index;
   3240 		count = wc->cmap.count;
   3241 
   3242 		if (index >= 2 || (index + count) > 2)
   3243 			return EINVAL;
   3244 
   3245 		err = copyin(wc->cmap.red, &r[index], count);
   3246 		if (err)
   3247 			return err;
   3248 		err = copyin(wc->cmap.green, &g[index], count);
   3249 		if (err)
   3250 			return err;
   3251 		err = copyin(wc->cmap.blue, &b[index], count);
   3252 		if (err)
   3253 			return err;
   3254 
   3255 		for (i = index; i < index + count; i++) {
   3256 			nc.rc_cmap[i] =
   3257 			    (r[i] << 16) + (g[i] << 8) + (b[i] << 0);
   3258 		}
   3259 	}
   3260 
   3261 	if (flags & WSDISPLAY_CURSOR_DOSHAPE) {
   3262 		if ((wc->size.x > RADEON_CURSORMAXX) ||
   3263 		    (wc->size.y > RADEON_CURSORMAXY))
   3264 			return EINVAL;
   3265 
   3266 		/* figure bytes per line */
   3267 		pitch = (wc->size.x + 7) / 8;
   3268 		size = pitch * wc->size.y;
   3269 
   3270 		/* clear the old cursor and mask */
   3271 		memset(nc.rc_image, 0, 512);
   3272 		memset(nc.rc_mask, 0, 512);
   3273 
   3274 		nc.rc_size = wc->size;
   3275 
   3276 		if ((err = copyin(wc->image, nc.rc_image, size)) != 0)
   3277 			return err;
   3278 
   3279 		if ((err = copyin(wc->mask, nc.rc_mask, size)) != 0)
   3280 			return err;
   3281 	}
   3282 
   3283 	if (flags & WSDISPLAY_CURSOR_DOHOT) {
   3284 		nc.rc_hot = wc->hot;
   3285 		if (nc.rc_hot.x >= nc.rc_size.x)
   3286 			nc.rc_hot.x = nc.rc_size.x - 1;
   3287 		if (nc.rc_hot.y >= nc.rc_size.y)
   3288 			nc.rc_hot.y = nc.rc_size.y - 1;
   3289 	}
   3290 
   3291 	if (flags & WSDISPLAY_CURSOR_DOPOS) {
   3292 		nc.rc_pos = wc->pos;
   3293 		if (nc.rc_pos.x >= dp->rd_virtx)
   3294 			nc.rc_pos.x = dp->rd_virtx - 1;
   3295 #if 0
   3296 		if (nc.rc_pos.x < 0)
   3297 			nc.rc_pos.x = 0;
   3298 #endif
   3299 		if (nc.rc_pos.y >= dp->rd_virty)
   3300 			nc.rc_pos.y = dp->rd_virty - 1;
   3301 #if 0
   3302 		if (nc.rc_pos.y < 0)
   3303 			nc.rc_pos.y = 0;
   3304 #endif
   3305 	}
   3306 	if (flags & WSDISPLAY_CURSOR_DOCUR) {
   3307 		nc.rc_visible = wc->enable;
   3308 	}
   3309 
   3310 	dp->rd_cursor = nc;
   3311 	radeonfb_cursor_update(dp, wc->which);
   3312 
   3313 	return 0;
   3314 }
   3315 
   3316 /*
   3317  * Change the cursor shape.  Call this with the cursor locked to avoid
   3318  * flickering/tearing.
   3319  */
   3320 static void
   3321 radeonfb_cursor_shape(struct radeonfb_display *dp)
   3322 {
   3323 	uint8_t	and[512], xor[512];
   3324 	int	i, j, src, dst, pitch;
   3325 	const uint8_t	*msk = dp->rd_cursor.rc_mask;
   3326 	const uint8_t	*img = dp->rd_cursor.rc_image;
   3327 
   3328 	/*
   3329 	 * Radeon cursor data interleaves one line of AND data followed
   3330 	 * by a line of XOR data.  (Each line corresponds to a whole hardware
   3331 	 * pitch - i.e. 64 pixels or 8 bytes.)
   3332 	 *
   3333 	 * The cursor is displayed using the following table:
   3334 	 *
   3335 	 * AND	XOR	Result
   3336 	 * ----------------------
   3337 	 *  0    0	Cursor color 0
   3338 	 *  0	 1	Cursor color 1
   3339 	 *  1	 0	Transparent
   3340 	 *  1	 1	Complement of background
   3341 	 *
   3342 	 * Our masks are therefore different from what we were passed.
   3343 	 * Passed in, I'm assuming the data represents either color 0 or 1,
   3344 	 * and a mask, so the passed in table looks like:
   3345 	 *
   3346 	 * IMG	Mask	Result
   3347 	 * -----------------------
   3348 	 *  0	 0	Transparent
   3349 	 *  0	 1	Cursor color 0
   3350 	 *  1	 0	Transparent
   3351 	 *  1	 1	Cursor color 1
   3352 	 *
   3353 	 * IF mask bit == 1, AND = 0, XOR = color.
   3354 	 * IF mask bit == 0, AND = 1, XOR = 0.
   3355 	 *
   3356 	 * hence:	AND = ~(mask);	XOR = color & ~(mask);
   3357 	 */
   3358 
   3359 	pitch = ((dp->rd_cursor.rc_size.x + 7) / 8);
   3360 
   3361 	/* start by assuming all bits are transparent */
   3362 	memset(and, 0xff, 512);
   3363 	memset(xor, 0x00, 512);
   3364 
   3365 	src = 0;
   3366 	dst = 0;
   3367 	for (i = 0; i < 64; i++) {
   3368 		for (j = 0; j < 64; j += 8) {
   3369 			if ((i < dp->rd_cursor.rc_size.y) &&
   3370 			    (j < dp->rd_cursor.rc_size.x)) {
   3371 
   3372 				/* take care to leave odd bits alone */
   3373 				and[dst] &= ~(msk[src]);
   3374 				xor[dst] = img[src] & msk[src];
   3375 				src++;
   3376 			}
   3377 			dst++;
   3378 		}
   3379 	}
   3380 
   3381 	/* copy the image into place */
   3382 	for (i = 0; i < 64; i++) {
   3383 		memcpy((uint8_t *)dp->rd_curptr + (i * 16),
   3384 		    &and[i * 8], 8);
   3385 		memcpy((uint8_t *)dp->rd_curptr + (i * 16) + 8,
   3386 		    &xor[i * 8], 8);
   3387 	}
   3388 }
   3389 
   3390 static void
   3391 radeonfb_cursor_position(struct radeonfb_display *dp)
   3392 {
   3393 	struct radeonfb_softc	*sc = dp->rd_softc;
   3394 	uint32_t		offset, hvoff, hvpos;	/* registers */
   3395 	uint32_t		coff;			/* cursor offset */
   3396 	int			i, x, y, xoff, yoff, crtcoff;
   3397 
   3398 	/*
   3399 	 * XXX: this also needs to handle pan/scan
   3400 	 */
   3401 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3402 
   3403 		struct radeonfb_crtc	*rcp = &dp->rd_crtcs[i];
   3404 
   3405 		if (rcp->rc_number) {
   3406 			offset = RADEON_CUR2_OFFSET;
   3407 			hvoff = RADEON_CUR2_HORZ_VERT_OFF;
   3408 			hvpos = RADEON_CUR2_HORZ_VERT_POSN;
   3409 			crtcoff = RADEON_CRTC2_OFFSET;
   3410 		} else {
   3411 			offset = RADEON_CUR_OFFSET;
   3412 			hvoff = RADEON_CUR_HORZ_VERT_OFF;
   3413 			hvpos = RADEON_CUR_HORZ_VERT_POSN;
   3414 			crtcoff = RADEON_CRTC_OFFSET;
   3415 		}
   3416 
   3417 		x = dp->rd_cursor.rc_pos.x;
   3418 		y = dp->rd_cursor.rc_pos.y;
   3419 
   3420 		while (y < rcp->rc_yoffset) {
   3421 			rcp->rc_yoffset -= RADEON_PANINCREMENT;
   3422 		}
   3423 		while (y >= (rcp->rc_yoffset + rcp->rc_videomode.vdisplay)) {
   3424 			rcp->rc_yoffset += RADEON_PANINCREMENT;
   3425 		}
   3426 		while (x < rcp->rc_xoffset) {
   3427 			rcp->rc_xoffset -= RADEON_PANINCREMENT;
   3428 		}
   3429 		while (x >= (rcp->rc_xoffset + rcp->rc_videomode.hdisplay)) {
   3430 			rcp->rc_xoffset += RADEON_PANINCREMENT;
   3431 		}
   3432 
   3433 		/* adjust for the cursor's hotspot */
   3434 		x -= dp->rd_cursor.rc_hot.x;
   3435 		y -= dp->rd_cursor.rc_hot.y;
   3436 		xoff = yoff = 0;
   3437 
   3438 		if (x >= dp->rd_virtx)
   3439 			x = dp->rd_virtx - 1;
   3440 		if (y >= dp->rd_virty)
   3441 			y = dp->rd_virty - 1;
   3442 
   3443 		/* now adjust cursor so it is relative to viewport */
   3444 		x -= rcp->rc_xoffset;
   3445 		y -= rcp->rc_yoffset;
   3446 
   3447 		/*
   3448 		 * no need to check for fall off, because we should
   3449 		 * never move off the screen entirely!
   3450 		 */
   3451 		coff = 0;
   3452 		if (x < 0) {
   3453 			xoff = -x;
   3454 			x = 0;
   3455 		}
   3456 		if (y < 0) {
   3457 			yoff = -y;
   3458 			y = 0;
   3459 			coff = (yoff * 2) * 8;
   3460 		}
   3461 
   3462 		/* pan the display */
   3463 		PUT32(sc, crtcoff, (rcp->rc_yoffset * dp->rd_stride) +
   3464 		    rcp->rc_xoffset);
   3465 
   3466 		PUT32(sc, offset, (dp->rd_curoff + coff) | RADEON_CUR_LOCK);
   3467 		PUT32(sc, hvoff, (xoff << 16) | (yoff) | RADEON_CUR_LOCK);
   3468 		/* NB: this unlocks the cursor */
   3469 		PUT32(sc, hvpos, (x << 16) | y);
   3470 	}
   3471 }
   3472 
   3473 static void
   3474 radeonfb_cursor_visible(struct radeonfb_display *dp)
   3475 {
   3476 	int		i;
   3477 	uint32_t	gencntl, bit;
   3478 
   3479 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3480 		if (dp->rd_crtcs[i].rc_number) {
   3481 			gencntl = RADEON_CRTC2_GEN_CNTL;
   3482 			bit = RADEON_CRTC2_CUR_EN;
   3483 		} else {
   3484 			gencntl = RADEON_CRTC_GEN_CNTL;
   3485 			bit = RADEON_CRTC_CUR_EN;
   3486 		}
   3487 
   3488 		if (dp->rd_cursor.rc_visible)
   3489 			SET32(dp->rd_softc, gencntl, bit);
   3490 		else
   3491 			CLR32(dp->rd_softc, gencntl, bit);
   3492 	}
   3493 }
   3494 
   3495 static void
   3496 radeonfb_cursor_cmap(struct radeonfb_display *dp)
   3497 {
   3498 	int		i;
   3499 	uint32_t	c0reg, c1reg;
   3500 	struct radeonfb_softc	*sc = dp->rd_softc;
   3501 
   3502 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3503 		if (dp->rd_crtcs[i].rc_number) {
   3504 			c0reg = RADEON_CUR2_CLR0;
   3505 			c1reg = RADEON_CUR2_CLR1;
   3506 		} else {
   3507 			c0reg = RADEON_CUR_CLR0;
   3508 			c1reg = RADEON_CUR_CLR1;
   3509 		}
   3510 
   3511 		PUT32(sc, c0reg, dp->rd_cursor.rc_cmap[0]);
   3512 		PUT32(sc, c1reg, dp->rd_cursor.rc_cmap[1]);
   3513 	}
   3514 }
   3515 
   3516 static void
   3517 radeonfb_cursor_update(struct radeonfb_display *dp, unsigned which)
   3518 {
   3519 	struct radeonfb_softc	*sc;
   3520 	int		i;
   3521 
   3522 	sc = dp->rd_softc;
   3523 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3524 		if (dp->rd_crtcs[i].rc_number) {
   3525 			SET32(sc, RADEON_CUR2_OFFSET, RADEON_CUR_LOCK);
   3526 		} else {
   3527 			SET32(sc, RADEON_CUR_OFFSET,RADEON_CUR_LOCK);
   3528 		}
   3529 	}
   3530 
   3531 	if (which & WSDISPLAY_CURSOR_DOCMAP)
   3532 		radeonfb_cursor_cmap(dp);
   3533 
   3534 	if (which & WSDISPLAY_CURSOR_DOSHAPE)
   3535 		radeonfb_cursor_shape(dp);
   3536 
   3537 	if (which & WSDISPLAY_CURSOR_DOCUR)
   3538 		radeonfb_cursor_visible(dp);
   3539 
   3540 	/* this one is unconditional, because it updates other stuff */
   3541 	radeonfb_cursor_position(dp);
   3542 }
   3543 
   3544 static struct videomode *
   3545 radeonfb_best_refresh(struct videomode *m1, struct videomode *m2)
   3546 {
   3547 	int	r1, r2;
   3548 
   3549 	/* otherwise pick the higher refresh rate */
   3550 	r1 = DIVIDE(DIVIDE(m1->dot_clock, m1->htotal), m1->vtotal);
   3551 	r2 = DIVIDE(DIVIDE(m2->dot_clock, m2->htotal), m2->vtotal);
   3552 
   3553 	return (r1 < r2 ? m2 : m1);
   3554 }
   3555 
   3556 static const struct videomode *
   3557 radeonfb_port_mode(struct radeonfb_softc *sc, struct radeonfb_port *rp,
   3558     int x, int y)
   3559 {
   3560 	struct edid_info	*ep = &rp->rp_edid;
   3561 	struct videomode	*vmp = NULL;
   3562 	int			i;
   3563 
   3564 	if (!rp->rp_edid_valid) {
   3565 		/* fallback to safe mode */
   3566 		return radeonfb_modelookup(sc->sc_defaultmode);
   3567 	}
   3568 
   3569 	/* always choose the preferred mode first! */
   3570 	if (ep->edid_preferred_mode) {
   3571 
   3572 		/* XXX: add auto-stretching support for native mode */
   3573 
   3574 		/* this may want panning to occur, btw */
   3575 		if ((ep->edid_preferred_mode->hdisplay <= x) &&
   3576 		    (ep->edid_preferred_mode->vdisplay <= y))
   3577 			return ep->edid_preferred_mode;
   3578 	}
   3579 
   3580 	for (i = 0; i < ep->edid_nmodes; i++) {
   3581 		/*
   3582 		 * We elect to pick a resolution that is too large for
   3583 		 * the monitor than one that is too small.  This means
   3584 		 * that we will prefer to pan rather than to try to
   3585 		 * center a smaller display on a larger screen.  In
   3586 		 * practice, this shouldn't matter because if a
   3587 		 * monitor can support a larger resolution, it can
   3588 		 * probably also support the smaller.  A specific
   3589 		 * exception is fixed format panels, but hopefully
   3590 		 * they are properly dealt with by the "autostretch"
   3591 		 * logic above.
   3592 		 */
   3593 		if ((ep->edid_modes[i].hdisplay > x) ||
   3594 		    (ep->edid_modes[i].vdisplay > y)) {
   3595 			continue;
   3596 		}
   3597 
   3598 		/*
   3599 		 * at this point, the display mode is no larger than
   3600 		 * what we've requested.
   3601 		 */
   3602 		if (vmp == NULL)
   3603 			vmp = &ep->edid_modes[i];
   3604 
   3605 		/* eliminate smaller modes */
   3606 		if ((vmp->hdisplay >= ep->edid_modes[i].hdisplay) ||
   3607 		    (vmp->vdisplay >= ep->edid_modes[i].vdisplay))
   3608 			continue;
   3609 
   3610 		if ((vmp->hdisplay < ep->edid_modes[i].hdisplay) ||
   3611 		    (vmp->vdisplay < ep->edid_modes[i].vdisplay)) {
   3612 			vmp = &ep->edid_modes[i];
   3613 			continue;
   3614 		}
   3615 
   3616 		KASSERT(vmp->hdisplay == ep->edid_modes[i].hdisplay);
   3617 		KASSERT(vmp->vdisplay == ep->edid_modes[i].vdisplay);
   3618 
   3619 		vmp = radeonfb_best_refresh(vmp, &ep->edid_modes[i]);
   3620 	}
   3621 
   3622 	return (vmp ? vmp : radeonfb_modelookup(sc->sc_defaultmode));
   3623 }
   3624 
   3625 static int
   3626 radeonfb_hasres(struct videomode *list, int nlist, int x, int y)
   3627 {
   3628 	int	i;
   3629 
   3630 	for (i = 0; i < nlist; i++) {
   3631 		if ((x == list[i].hdisplay) &&
   3632 		    (y == list[i].vdisplay)) {
   3633 			return 1;
   3634 		}
   3635 	}
   3636 	return 0;
   3637 }
   3638 
   3639 static void
   3640 radeonfb_pickres(struct radeonfb_display *dp, uint16_t *x, uint16_t *y,
   3641     int pan)
   3642 {
   3643 	struct radeonfb_port	*rp;
   3644 	struct edid_info	*ep;
   3645 	int			i, j;
   3646 
   3647 	*x = 0;
   3648 	*y = 0;
   3649 
   3650 	if (pan) {
   3651 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   3652 			rp = dp->rd_crtcs[i].rc_port;
   3653 			ep = &rp->rp_edid;
   3654 			if (!rp->rp_edid_valid) {
   3655 				/* monitor not present */
   3656 				continue;
   3657 			}
   3658 
   3659 			/*
   3660 			 * For now we are ignoring "conflict" that
   3661 			 * could occur when mixing some modes like
   3662 			 * 1280x1024 and 1400x800.  It isn't clear
   3663 			 * which is better, so the first one wins.
   3664 			 */
   3665 			for (j = 0; j < ep->edid_nmodes; j++) {
   3666 				/*
   3667 				 * ignore resolutions that are too big for
   3668 				 * the radeon
   3669 				 */
   3670 				if (ep->edid_modes[j].hdisplay >
   3671 				    dp->rd_softc->sc_maxx)
   3672 					continue;
   3673 				if (ep->edid_modes[j].vdisplay >
   3674 				    dp->rd_softc->sc_maxy)
   3675 					continue;
   3676 
   3677 				/*
   3678 				 * pick largest resolution, the
   3679 				 * smaller monitor will pan
   3680 				 */
   3681 				if ((ep->edid_modes[j].hdisplay >= *x) &&
   3682 				    (ep->edid_modes[j].vdisplay >= *y)) {
   3683 					*x = ep->edid_modes[j].hdisplay;
   3684 					*y = ep->edid_modes[j].vdisplay;
   3685 				}
   3686 			}
   3687 		}
   3688 
   3689 	} else {
   3690 		struct videomode	modes[64];
   3691 		int			nmodes = 0;
   3692 		int			valid = 0;
   3693 
   3694 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   3695 			/*
   3696 			 * pick the largest resolution in common.
   3697 			 */
   3698 			rp = dp->rd_crtcs[i].rc_port;
   3699 			ep = &rp->rp_edid;
   3700 
   3701 			if (!rp->rp_edid_valid)
   3702 				continue;
   3703 
   3704 			if (!valid) {
   3705 				/*
   3706 				 * Pick the preferred mode for this port
   3707 				 * if available.
   3708 				 */
   3709 				if (ep->edid_preferred_mode) {
   3710 					struct videomode *vmp =
   3711 						ep->edid_preferred_mode;
   3712 
   3713 					if ((vmp->hdisplay <=
   3714 					     dp->rd_softc->sc_maxx) &&
   3715 					    (vmp->vdisplay <=
   3716 					     dp->rd_softc->sc_maxy))
   3717 						modes[nmodes++] = *vmp;
   3718 				} else {
   3719 
   3720 					/* initialize starting list */
   3721 					for (j = 0; j < ep->edid_nmodes; j++) {
   3722 						/*
   3723 						 * ignore resolutions that are
   3724 						 * too big for the radeon
   3725 						 */
   3726 						if (ep->edid_modes[j].hdisplay >
   3727 						    dp->rd_softc->sc_maxx)
   3728 							continue;
   3729 						if (ep->edid_modes[j].vdisplay >
   3730 						    dp->rd_softc->sc_maxy)
   3731 							continue;
   3732 
   3733 						modes[nmodes] =
   3734 							ep->edid_modes[j];
   3735 						nmodes++;
   3736 					}
   3737 				}
   3738 				valid = 1;
   3739 			} else {
   3740 				/* merge into preexisting list */
   3741 				for (j = 0; j < nmodes; j++) {
   3742 					if (!radeonfb_hasres(ep->edid_modes,
   3743 						ep->edid_nmodes,
   3744 						modes[j].hdisplay,
   3745 						modes[j].vdisplay)) {
   3746 						modes[j] = modes[nmodes];
   3747 						j--;
   3748 						nmodes--;
   3749 					}
   3750 				}
   3751 			}
   3752 		}
   3753 
   3754 		/* now we have to pick from the merged list */
   3755 		for (i = 0; i < nmodes; i++) {
   3756 			if ((modes[i].hdisplay >= *x) &&
   3757 			    (modes[i].vdisplay >= *y)) {
   3758 				*x = modes[i].hdisplay;
   3759 				*y = modes[i].vdisplay;
   3760 			}
   3761 		}
   3762 	}
   3763 
   3764 	if ((*x == 0) || (*y == 0)) {
   3765 		/* fallback to safe mode */
   3766 		*x = 640;
   3767 		*y = 480;
   3768 	}
   3769 }
   3770 
   3771 /*
   3772  * backlight levels are linear on:
   3773  * - RV200, RV250, RV280, RV350
   3774  * - but NOT on PowerBook4,3 6,3 6,5
   3775  * according to Linux' radeonfb
   3776  */
   3777 
   3778 /* Get the current backlight level for the display.  */
   3779 
   3780 static int
   3781 radeonfb_get_backlight(struct radeonfb_display *dp)
   3782 {
   3783 	int s;
   3784 	uint32_t level;
   3785 
   3786 	s = spltty();
   3787 
   3788 	level = radeonfb_get32(dp->rd_softc, RADEON_LVDS_GEN_CNTL);
   3789 	level &= RADEON_LVDS_BL_MOD_LEV_MASK;
   3790 	level >>= RADEON_LVDS_BL_MOD_LEV_SHIFT;
   3791 
   3792 	/*
   3793 	 * On some chips, we should negate the backlight level.
   3794 	 * XXX Find out on which chips.
   3795 	 */
   3796 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT)
   3797 	level = RADEONFB_BACKLIGHT_MAX - level;
   3798 
   3799 	splx(s);
   3800 
   3801 	return level;
   3802 }
   3803 
   3804 /* Set the backlight to the given level for the display.  */
   3805 static void
   3806 radeonfb_switch_backlight(struct radeonfb_display *dp, int on)
   3807 {
   3808 	if (dp->rd_bl_on == on)
   3809 		return;
   3810 	dp->rd_bl_on = on;
   3811 	radeonfb_set_backlight(dp, dp->rd_bl_level);
   3812 }
   3813 
   3814 static int
   3815 radeonfb_set_backlight(struct radeonfb_display *dp, int level)
   3816 {
   3817 	struct radeonfb_softc *sc;
   3818 	int rlevel, s;
   3819 	uint32_t lvds;
   3820 
   3821 	s = spltty();
   3822 
   3823 	dp->rd_bl_level = level;
   3824 	if (dp->rd_bl_on == 0)
   3825 		level = 0;
   3826 
   3827 	if (level < 0)
   3828 		level = 0;
   3829 	else if (level >= RADEONFB_BACKLIGHT_MAX)
   3830 		level = RADEONFB_BACKLIGHT_MAX;
   3831 
   3832 	sc = dp->rd_softc;
   3833 
   3834 	/* On some chips, we should negate the backlight level. */
   3835 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT) {
   3836 	rlevel = RADEONFB_BACKLIGHT_MAX - level;
   3837 	} else
   3838 	rlevel = level;
   3839 
   3840 	callout_stop(&dp->rd_bl_lvds_co);
   3841 	radeonfb_engine_idle(sc);
   3842 
   3843 	/*
   3844 	 * Turn off the display if the backlight is set to 0, since the
   3845 	 * display is useless without backlight anyway.
   3846 	 */
   3847 	if (level == 0)
   3848 		radeonfb_blank(dp, 1);
   3849 	else if (radeonfb_get_backlight(dp) == 0)
   3850 		radeonfb_blank(dp, 0);
   3851 
   3852 	lvds = radeonfb_get32(sc, RADEON_LVDS_GEN_CNTL);
   3853 	lvds &= ~RADEON_LVDS_DISPLAY_DIS;
   3854 	if (!(lvds & RADEON_LVDS_BLON) || !(lvds & RADEON_LVDS_ON)) {
   3855 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_DIGON;
   3856 		lvds |= RADEON_LVDS_BLON | RADEON_LVDS_EN;
   3857 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   3858 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   3859 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   3860 		lvds |= RADEON_LVDS_ON;
   3861 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_BL_MOD_EN;
   3862 	} else {
   3863 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   3864 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   3865 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   3866 	}
   3867 
   3868 	dp->rd_bl_lvds_val &= ~RADEON_LVDS_STATE_MASK;
   3869 	dp->rd_bl_lvds_val |= lvds & RADEON_LVDS_STATE_MASK;
   3870 	/* XXX What is the correct delay? */
   3871 	callout_schedule(&dp->rd_bl_lvds_co, 200 * hz);
   3872 
   3873 	splx(s);
   3874 
   3875 	return 0;
   3876 }
   3877 
   3878 /*
   3879  * Callout function for delayed operations on the LVDS_GEN_CNTL register.
   3880  * Set the delayed bits in the register, and clear the stored delayed
   3881  * value.
   3882  */
   3883 
   3884 static void radeonfb_lvds_callout(void *arg)
   3885 {
   3886 	struct radeonfb_display *dp = arg;
   3887 	int s;
   3888 
   3889 	s = splhigh();
   3890 
   3891 	radeonfb_mask32(dp->rd_softc, RADEON_LVDS_GEN_CNTL, ~0,
   3892 			dp->rd_bl_lvds_val);
   3893 	dp->rd_bl_lvds_val = 0;
   3894 
   3895 	splx(s);
   3896 }
   3897 
   3898 static void
   3899 radeonfb_brightness_up(device_t dev)
   3900 {
   3901 	struct radeonfb_softc *sc = device_private(dev);
   3902 	struct radeonfb_display *dp = &sc->sc_displays[0];
   3903 	int level;
   3904 
   3905 	/* we assume the main display is the first one - need a better way */
   3906 	if (sc->sc_ndisplays < 1) return;
   3907 	/* make sure pushing the hotkeys always has an effect */
   3908 	dp->rd_bl_on = 1;
   3909 	level = dp->rd_bl_level;
   3910 	level = min(RADEONFB_BACKLIGHT_MAX, level + 5);
   3911 	radeonfb_set_backlight(dp, level);
   3912 }
   3913 
   3914 static void
   3915 radeonfb_brightness_down(device_t dev)
   3916 {
   3917 	struct radeonfb_softc *sc = device_private(dev);
   3918 	struct radeonfb_display *dp = &sc->sc_displays[0];
   3919 	int level;
   3920 
   3921 	/* we assume the main display is the first one - need a better way */
   3922 	if (sc->sc_ndisplays < 1) return;
   3923 	/* make sure pushing the hotkeys always has an effect */
   3924 	dp->rd_bl_on = 1;
   3925 	level = dp->rd_bl_level;
   3926 	level = max(0, level - 5);
   3927 	radeonfb_set_backlight(dp, level);
   3928 }
   3929