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radeonfb.c revision 1.97
      1 /*	$NetBSD: radeonfb.c,v 1.97 2018/06/15 21:22:35 macallan Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2006 Itronix Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Garrett D'Amore for Itronix Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. The name of Itronix Inc. may not be used to endorse
     18  *    or promote products derived from this software without specific
     19  *    prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND ANY EXPRESS
     22  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     23  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
     25  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
     27  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     30  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     31  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 /*
     35  * ATI Technologies Inc. ("ATI") has not assisted in the creation of, and
     36  * does not endorse, this software.  ATI will not be responsible or liable
     37  * for any actual or alleged damage or loss caused by or in connection with
     38  * the use of or reliance on this software.
     39  */
     40 
     41 /*
     42  * Portions of this code were taken from XFree86's Radeon driver, which bears
     43  * this notice:
     44  *
     45  * Copyright 2000 ATI Technologies Inc., Markham, Ontario, and
     46  *                VA Linux Systems Inc., Fremont, California.
     47  *
     48  * All Rights Reserved.
     49  *
     50  * Permission is hereby granted, free of charge, to any person obtaining
     51  * a copy of this software and associated documentation files (the
     52  * "Software"), to deal in the Software without restriction, including
     53  * without limitation on the rights to use, copy, modify, merge,
     54  * publish, distribute, sublicense, and/or sell copies of the Software,
     55  * and to permit persons to whom the Software is furnished to do so,
     56  * subject to the following conditions:
     57  *
     58  * The above copyright notice and this permission notice (including the
     59  * next paragraph) shall be included in all copies or substantial
     60  * portions of the Software.
     61  *
     62  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     63  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     64  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     65  * NON-INFRINGEMENT.  IN NO EVENT SHALL ATI, VA LINUX SYSTEMS AND/OR
     66  * THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
     67  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     68  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     69  * DEALINGS IN THE SOFTWARE.
     70  */
     71 
     72 #include <sys/cdefs.h>
     73 __KERNEL_RCSID(0, "$NetBSD: radeonfb.c,v 1.97 2018/06/15 21:22:35 macallan Exp $");
     74 
     75 #include <sys/param.h>
     76 #include <sys/systm.h>
     77 #include <sys/device.h>
     78 #include <sys/malloc.h>
     79 #include <sys/bus.h>
     80 #include <sys/kernel.h>
     81 #include <sys/lwp.h>
     82 #include <sys/kauth.h>
     83 
     84 #include <dev/wscons/wsdisplayvar.h>
     85 #include <dev/wscons/wsconsio.h>
     86 #include <dev/wsfont/wsfont.h>
     87 #include <dev/rasops/rasops.h>
     88 #include <dev/videomode/videomode.h>
     89 #include <dev/videomode/edidvar.h>
     90 #include <dev/wscons/wsdisplay_vconsvar.h>
     91 #include <dev/pci/wsdisplay_pci.h>
     92 #include <dev/wscons/wsdisplay_glyphcachevar.h>
     93 
     94 #include <dev/pci/pcidevs.h>
     95 #include <dev/pci/pcireg.h>
     96 #include <dev/pci/pcivar.h>
     97 #include <dev/pci/pciio.h>
     98 #include <dev/pci/radeonfbreg.h>
     99 #include <dev/pci/radeonfbvar.h>
    100 #include "opt_radeonfb.h"
    101 #include "opt_vcons.h"
    102 
    103 #ifdef RADEONFB_DEPTH_32
    104 #define RADEONFB_DEFAULT_DEPTH 32
    105 #else
    106 #define RADEONFB_DEFAULT_DEPTH 8
    107 #endif
    108 
    109 static int radeonfb_match(device_t, cfdata_t, void *);
    110 static void radeonfb_attach(device_t, device_t, void *);
    111 static int radeonfb_ioctl(void *, void *, unsigned long, void *, int,
    112     struct lwp *);
    113 static paddr_t radeonfb_mmap(void *, void *, off_t, int);
    114 static int radeonfb_scratch_test(struct radeonfb_softc *, int, uint32_t);
    115 static void radeonfb_loadbios(struct radeonfb_softc *,
    116     const struct pci_attach_args *);
    117 
    118 static uintmax_t radeonfb_getprop_num(struct radeonfb_softc *, const char *,
    119     uintmax_t);
    120 static int radeonfb_getclocks(struct radeonfb_softc *);
    121 static int radeonfb_gettmds(struct radeonfb_softc *);
    122 static int radeonfb_calc_dividers(struct radeonfb_softc *, uint32_t,
    123     uint32_t *, uint32_t *, int);
    124 /* flags for radeonfb_calc_dividers */
    125 #define NO_ODD_FBDIV	1
    126 
    127 static int radeonfb_getconnectors(struct radeonfb_softc *);
    128 static const struct videomode *radeonfb_modelookup(const char *);
    129 static void radeonfb_init_screen(void *, struct vcons_screen *, int, long *);
    130 static void radeonfb_pllwriteupdate(struct radeonfb_softc *, int);
    131 static void radeonfb_pllwaitatomicread(struct radeonfb_softc *, int);
    132 static void radeonfb_program_vclk(struct radeonfb_softc *, int, int, int);
    133 static void radeonfb_modeswitch(struct radeonfb_display *);
    134 static void radeonfb_setcrtc(struct radeonfb_display *, int);
    135 static void radeonfb_init_misc(struct radeonfb_softc *);
    136 static void radeonfb_set_fbloc(struct radeonfb_softc *);
    137 static void radeonfb_init_palette(struct radeonfb_display *);
    138 static void radeonfb_r300cg_workaround(struct radeonfb_softc *);
    139 
    140 static int radeonfb_isblank(struct radeonfb_display *);
    141 static void radeonfb_blank(struct radeonfb_display *, int);
    142 static int radeonfb_set_cursor(struct radeonfb_display *,
    143     struct wsdisplay_cursor *);
    144 static int radeonfb_set_curpos(struct radeonfb_display *,
    145     struct wsdisplay_curpos *);
    146 static void radeonfb_putpal(struct radeonfb_display *, int, int, int, int);
    147 static int radeonfb_putcmap(struct radeonfb_display *, struct wsdisplay_cmap *);
    148 static int radeonfb_getcmap(struct radeonfb_display *, struct wsdisplay_cmap *);
    149 
    150 /* acceleration support */
    151 static void  radeonfb_rectfill(struct radeonfb_display *, int dstx, int dsty,
    152     int width, int height, uint32_t color);
    153 static void  radeonfb_rectfill_a(void *, int, int, int, int, long);
    154 static void radeonfb_bitblt(void *, int srcx, int srcy,
    155     int dstx, int dsty, int width, int height, int rop);
    156 
    157 /* hw cursor support */
    158 static void radeonfb_cursor_cmap(struct radeonfb_display *);
    159 static void radeonfb_cursor_shape(struct radeonfb_display *);
    160 static void radeonfb_cursor_position(struct radeonfb_display *);
    161 static void radeonfb_cursor_visible(struct radeonfb_display *);
    162 static void radeonfb_cursor_update(struct radeonfb_display *, unsigned);
    163 
    164 static inline void radeonfb_wait_fifo(struct radeonfb_softc *, int);
    165 static void radeonfb_engine_idle(struct radeonfb_softc *);
    166 static void radeonfb_engine_flush(struct radeonfb_softc *);
    167 static void radeonfb_engine_reset(struct radeonfb_softc *);
    168 static void radeonfb_engine_init(struct radeonfb_display *);
    169 static inline void radeonfb_unclip(struct radeonfb_softc *) __unused;
    170 
    171 static void radeonfb_eraserows(void *, int, int, long);
    172 static void radeonfb_erasecols(void *, int, int, int, long);
    173 static void radeonfb_copyrows(void *, int, int, int);
    174 static void radeonfb_copycols(void *, int, int, int, int);
    175 static void radeonfb_cursor(void *, int, int, int);
    176 static void radeonfb_putchar(void *, int, int, unsigned, long);
    177 static void radeonfb_putchar_aa32(void *, int, int, unsigned, long);
    178 static void radeonfb_putchar_aa8(void *, int, int, unsigned, long);
    179 #ifndef RADEONFB_ALWAYS_ACCEL_PUTCHAR
    180 static void radeonfb_putchar_wrapper(void *, int, int, unsigned, long);
    181 #endif
    182 
    183 static int radeonfb_set_backlight(struct radeonfb_display *, int);
    184 static int radeonfb_get_backlight(struct radeonfb_display *);
    185 static void radeonfb_switch_backlight(struct radeonfb_display *, int);
    186 static void radeonfb_lvds_callout(void *);
    187 
    188 static void radeonfb_brightness_up(device_t);
    189 static void radeonfb_brightness_down(device_t);
    190 
    191 static struct videomode *radeonfb_best_refresh(struct videomode *,
    192     struct videomode *);
    193 static void radeonfb_pickres(struct radeonfb_display *, uint16_t *,
    194     uint16_t *, int);
    195 static const struct videomode *radeonfb_port_mode(struct radeonfb_softc *,
    196     struct radeonfb_port *, int, int);
    197 
    198 static int radeonfb_drm_print(void *, const char *);
    199 
    200 #ifdef	RADEONFB_DEBUG
    201 int	radeon_debug = 1;
    202 #define	DPRINTF(x)	\
    203 	if (radeon_debug) printf x
    204 #define	PRINTREG(r)	DPRINTF((#r " = %08x\n", GET32(sc, r)))
    205 #define	PRINTPLL(r)	DPRINTF((#r " = %08x\n", GETPLL(sc, r)))
    206 #else
    207 #define	DPRINTF(x)
    208 #define	PRINTREG(r)
    209 #define	PRINTPLL(r)
    210 #endif
    211 
    212 #define	ROUNDUP(x,y)	(((x) + ((y) - 1)) & ~((y) - 1))
    213 
    214 #ifndef	RADEON_DEFAULT_MODE
    215 /* any reasonably modern display should handle this */
    216 #define	RADEON_DEFAULT_MODE	"1024x768x60"
    217 #endif
    218 
    219 extern const u_char rasops_cmap[768];
    220 
    221 const char	*radeonfb_default_mode = RADEON_DEFAULT_MODE;
    222 
    223 static struct {
    224 	int		size;		/* minimum memory size (MB) */
    225 	int		maxx;		/* maximum x dimension */
    226 	int		maxy;		/* maximum y dimension */
    227 	int		maxbpp;		/* maximum bpp */
    228 	int		maxdisp;	/* maximum logical display count */
    229 } radeonfb_limits[] = {
    230 	{ 32,	2048, 1536, 32, 2 },
    231 	{ 16,	1600, 1200, 32, 2 },
    232 	{ 8,	1600, 1200, 32, 1 },
    233 	{ 0,	0, 0, 0, 0 },
    234 };
    235 
    236 static struct wsscreen_descr radeonfb_stdscreen = {
    237 	"fb",		/* name */
    238 	0, 0,		/* ncols, nrows */
    239 	NULL,		/* textops */
    240 	8, 16,		/* fontwidth, fontheight */
    241 	WSSCREEN_WSCOLORS | WSSCREEN_UNDERLINE | WSSCREEN_RESIZE, /* capabilities */
    242 	0,		/* modecookie */
    243 };
    244 
    245 struct wsdisplay_accessops radeonfb_accessops = {
    246 	radeonfb_ioctl,
    247 	radeonfb_mmap,
    248 	NULL,		/* vcons_alloc_screen */
    249 	NULL,		/* vcons_free_screen */
    250 	NULL,		/* vcons_show_screen */
    251 	NULL,		/* load_font */
    252 	NULL,		/* pollc */
    253 	NULL,		/* scroll */
    254 };
    255 
    256 static struct {
    257 	uint16_t	devid;
    258 	uint16_t	family;
    259 	uint16_t	flags;
    260 } radeonfb_devices[] =
    261 {
    262 	/* R100 family */
    263 	{ PCI_PRODUCT_ATI_RADEON_R100_QD,	RADEON_R100, 0 },
    264 	{ PCI_PRODUCT_ATI_RADEON_R100_QE,	RADEON_R100, 0 },
    265 	{ PCI_PRODUCT_ATI_RADEON_R100_QF,	RADEON_R100, 0 },
    266 	{ PCI_PRODUCT_ATI_RADEON_R100_QG,	RADEON_R100, 0 },
    267 
    268 	/* RV100 family */
    269 	{ PCI_PRODUCT_ATI_RADEON_RV100_LY,	RADEON_RV100, RFB_MOB },
    270 	{ PCI_PRODUCT_ATI_RADEON_RV100_LZ,	RADEON_RV100, RFB_MOB },
    271 	{ PCI_PRODUCT_ATI_RADEON_RV100_QY,	RADEON_RV100, 0 },
    272 	{ PCI_PRODUCT_ATI_RADEON_RV100_QZ,	RADEON_RV100, 0 },
    273 
    274 	/* RS100 family */
    275 	{ PCI_PRODUCT_ATI_RADEON_RS100_4136,	RADEON_RS100, 0 },
    276 	{ PCI_PRODUCT_ATI_RADEON_RS100_4336,	RADEON_RS100, RFB_MOB },
    277 
    278 	/* RS200/RS250 family */
    279 	{ PCI_PRODUCT_ATI_RADEON_RS200_4337,	RADEON_RS200, RFB_MOB },
    280 	{ PCI_PRODUCT_ATI_RADEON_RS200_A7,	RADEON_RS200, 0 },
    281 	{ PCI_PRODUCT_ATI_RADEON_RS250_B7,	RADEON_RS200, RFB_MOB },
    282 	{ PCI_PRODUCT_ATI_RADEON_RS250_D7,	RADEON_RS200, 0 },
    283 
    284 	/* R200 family */
    285 	/* add more R200 products? , 5148 */
    286 	{ PCI_PRODUCT_ATI_RADEON_R200_BB,	RADEON_R200, 0 },
    287 	{ PCI_PRODUCT_ATI_RADEON_R200_BC,	RADEON_R200, 0 },
    288 	{ PCI_PRODUCT_ATI_RADEON_R200_QH,	RADEON_R200, 0 },
    289 	{ PCI_PRODUCT_ATI_RADEON_R200_QL,	RADEON_R200, 0 },
    290 	{ PCI_PRODUCT_ATI_RADEON_R200_QM,	RADEON_R200, 0 },
    291 
    292 	/* RV200 family */
    293 	{ PCI_PRODUCT_ATI_RADEON_RV200_LW,	RADEON_RV200, RFB_MOB },
    294 	{ PCI_PRODUCT_ATI_RADEON_RV200_LX,	RADEON_RV200, RFB_MOB },
    295 	{ PCI_PRODUCT_ATI_RADEON_RV200_QW,	RADEON_RV200, 0 },
    296 	{ PCI_PRODUCT_ATI_RADEON_RV200_QX,	RADEON_RV200, 0 },
    297 
    298 	/* RV250 family */
    299 	{ PCI_PRODUCT_ATI_RADEON_RV250_4966,	RADEON_RV250, 0 },
    300 	{ PCI_PRODUCT_ATI_RADEON_RV250_4967,	RADEON_RV250, 0 },
    301 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C64,	RADEON_RV250, RFB_MOB },
    302 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C66,	RADEON_RV250, RFB_MOB },
    303 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C67,	RADEON_RV250, RFB_MOB },
    304 
    305 	/* RS300 family */
    306 	{ PCI_PRODUCT_ATI_RADEON_RS300_X5,	RADEON_RS300, 0 },
    307 	{ PCI_PRODUCT_ATI_RADEON_RS300_X4,	RADEON_RS300, 0 },
    308 	{ PCI_PRODUCT_ATI_RADEON_RS300_7834,	RADEON_RS300, 0 },
    309 	{ PCI_PRODUCT_ATI_RADEON_RS300_7835,	RADEON_RS300, RFB_MOB },
    310 
    311 	/* RV280 family */
    312 	{ PCI_PRODUCT_ATI_RADEON_RV280_5960,	RADEON_RV280, 0 },
    313 	{ PCI_PRODUCT_ATI_RADEON_RV280_5961,	RADEON_RV280, 0 },
    314 	{ PCI_PRODUCT_ATI_RADEON_RV280_5962,	RADEON_RV280, 0 },
    315 	{ PCI_PRODUCT_ATI_RADEON_RV280_5963,	RADEON_RV280, 0 },
    316 	{ PCI_PRODUCT_ATI_RADEON_RV280_5964,	RADEON_RV280, 0 },
    317 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C61,	RADEON_RV280, RFB_MOB },
    318 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C63,	RADEON_RV280, RFB_MOB },
    319 
    320 	/* R300 family */
    321 	{ PCI_PRODUCT_ATI_RADEON_R300_AD,	RADEON_R300, 0 },
    322 	{ PCI_PRODUCT_ATI_RADEON_R300_AE,	RADEON_R300, 0 },
    323 	{ PCI_PRODUCT_ATI_RADEON_R300_AF,	RADEON_R300, 0 },
    324 	{ PCI_PRODUCT_ATI_RADEON_R300_AG,	RADEON_R300, 0 },
    325 	{ PCI_PRODUCT_ATI_RADEON_R300_ND,	RADEON_R300, 0 },
    326 	{ PCI_PRODUCT_ATI_RADEON_R300_NE,	RADEON_R300, 0 },
    327 	{ PCI_PRODUCT_ATI_RADEON_R300_NF,	RADEON_R300, 0 },
    328 	{ PCI_PRODUCT_ATI_RADEON_R300_NG,	RADEON_R300, 0 },
    329 
    330 	/* RV350/RV360 family */
    331 	{ PCI_PRODUCT_ATI_RADEON_RV350_AP,	RADEON_RV350, 0 },
    332 	{ PCI_PRODUCT_ATI_RADEON_RV350_AQ,	RADEON_RV350, 0 },
    333 	{ PCI_PRODUCT_ATI_RADEON_RV360_AR,	RADEON_RV350, 0 },
    334 	{ PCI_PRODUCT_ATI_RADEON_RV350_AS,	RADEON_RV350, 0 },
    335 	{ PCI_PRODUCT_ATI_RADEON_RV350_AT,	RADEON_RV350, 0 },
    336 	{ PCI_PRODUCT_ATI_RADEON_RV350_AV,	RADEON_RV350, 0 },
    337 	{ PCI_PRODUCT_ATI_RADEON_RV350_NP,	RADEON_RV350, RFB_MOB },
    338 	{ PCI_PRODUCT_ATI_RADEON_RV350_NQ,	RADEON_RV350, RFB_MOB },
    339 	{ PCI_PRODUCT_ATI_RADEON_RV350_NR,	RADEON_RV350, RFB_MOB },
    340 	{ PCI_PRODUCT_ATI_RADEON_RV350_NS,	RADEON_RV350, RFB_MOB },
    341 	{ PCI_PRODUCT_ATI_RADEON_RV350_NT,	RADEON_RV350, RFB_MOB },
    342 	{ PCI_PRODUCT_ATI_RADEON_RV350_NV,	RADEON_RV350, RFB_MOB },
    343 
    344 	/* R350/R360 family */
    345 	{ PCI_PRODUCT_ATI_RADEON_R350_AH,	RADEON_R350, 0 },
    346 	{ PCI_PRODUCT_ATI_RADEON_R350_AI,	RADEON_R350, 0 },
    347 	{ PCI_PRODUCT_ATI_RADEON_R350_AJ,	RADEON_R350, 0 },
    348 	{ PCI_PRODUCT_ATI_RADEON_R350_AK,	RADEON_R350, 0 },
    349 	{ PCI_PRODUCT_ATI_RADEON_R350_NH,	RADEON_R350, 0 },
    350 	{ PCI_PRODUCT_ATI_RADEON_R350_NI,	RADEON_R350, 0 },
    351 	{ PCI_PRODUCT_ATI_RADEON_R350_NK,	RADEON_R350, 0 },
    352 	{ PCI_PRODUCT_ATI_RADEON_R360_NJ,	RADEON_R350, 0 },
    353 
    354 	/* RV380/RV370 family */
    355 	{ PCI_PRODUCT_ATI_RADEON_RV380_3150,	RADEON_RV380, RFB_MOB },
    356 	{ PCI_PRODUCT_ATI_RADEON_RV380_3154,	RADEON_RV380, RFB_MOB },
    357 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E50,	RADEON_RV380, 0 },
    358 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E54,	RADEON_RV380, 0 },
    359 	{ PCI_PRODUCT_ATI_RADEON_RV370_5460,	RADEON_RV380, RFB_MOB },
    360 	{ PCI_PRODUCT_ATI_RADEON_RV370_5464,	RADEON_RV380, RFB_MOB },
    361 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B60,	RADEON_RV380, 0 },
    362 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B63,	RADEON_RV380, 0 },
    363 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B64,	RADEON_RV380, 0 },
    364 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B65,	RADEON_RV380, 0 },
    365 
    366 #if notyet
    367 	/* R420/R423 family */
    368 	{ PCI_PRODUCT_ATI_RADEON_R420_JH,	RADEON_R420, 0 },
    369 	{ PCI_PRODUCT_ATI_RADEON_R420_JI,	RADEON_R420, 0 },
    370 	{ PCI_PRODUCT_ATI_RADEON_R420_JJ,	RADEON_R420, 0 },
    371 	{ PCI_PRODUCT_ATI_RADEON_R420_JK,	RADEON_R420, 0 },
    372 	{ PCI_PRODUCT_ATI_RADEON_R420_JL,	RADEON_R420, 0 },
    373 	{ PCI_PRODUCT_ATI_RADEON_R420_JM,	RADEON_R420, 0 },
    374 	{ PCI_PRODUCT_ATI_RADEON_R420_JN,	RADEON_R420, RFB_MOB },
    375 	{ PCI_PRODUCT_ATI_RADEON_R420_JP,	RADEON_R420, 0 },
    376 	{ PCI_PRODUCT_ATI_RADEON_R423_UH,	RADEON_R420, 0 },
    377 	{ PCI_PRODUCT_ATI_RADEON_R423_UI,	RADEON_R420, 0 },
    378 	{ PCI_PRODUCT_ATI_RADEON_R423_UJ,	RADEON_R420, 0 },
    379 	{ PCI_PRODUCT_ATI_RADEON_R423_UK,	RADEON_R420, 0 },
    380 	{ PCI_PRODUCT_ATI_RADEON_R423_UQ,	RADEON_R420, 0 },
    381 	{ PCI_PRODUCT_ATI_RADEON_R423_UR,	RADEON_R420, 0 },
    382 	{ PCI_PRODUCT_ATI_RADEON_R423_UT,	RADEON_R420, 0 },
    383 	{ PCI_PRODUCT_ATI_RADEON_R423_5D57,	RADEON_R420, 0 },
    384 	{ PCI_PRODUCT_ATI_RADEON_R430_554F,	RADEON_R420, 0 },
    385 
    386 	/* R5xx family */
    387 	{ 0x7240,	RADEON_R420, 0 },
    388 #endif
    389 	{ 0, 0, 0 }
    390 };
    391 
    392 static struct {
    393 	int divider;
    394 	int mask;
    395 } radeonfb_dividers[] = {
    396 	{ 16, 5 },
    397 	{ 12, 7 },
    398 	{  8, 3 },
    399 	{  6, 6 },
    400 	{  4, 2 },
    401 	{  3, 4 },
    402 	{  2, 1 },
    403 	{  1, 0 },
    404 	{  0, 0 }
    405 };
    406 
    407 /*
    408  * This table taken from X11.
    409  */
    410 static const struct {
    411 	int			family;
    412 	struct radeon_tmds_pll	plls[4];
    413 } radeonfb_tmds_pll[] = {
    414 	{ RADEON_R100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    415 	{ RADEON_RV100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    416 	{ RADEON_RS100, {{0, 0}}},
    417 	{ RADEON_RV200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    418 	{ RADEON_RS200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    419 	{ RADEON_R200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    420 	{ RADEON_RV250,	{{15500, 0x81b}, {-1, 0x83f}}},
    421 	{ RADEON_RS300, {{0, 0}}},
    422 	{ RADEON_RV280,	{{13000, 0x400f4}, {15000, 0x400f7}, {-1, 0x40111}}},
    423 	{ RADEON_R300,	{{-1, 0xb01cb}}},
    424 	{ RADEON_R350,	{{-1, 0xb01cb}}},
    425 	{ RADEON_RV350,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    426 	{ RADEON_RV380,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    427 	{ RADEON_R420,	{{-1, 0xb01cb}}},
    428 };
    429 
    430 #define RADEONFB_BACKLIGHT_MAX    255  /* Maximum backlight level. */
    431 
    432 
    433 CFATTACH_DECL_NEW(radeonfb, sizeof (struct radeonfb_softc),
    434     radeonfb_match, radeonfb_attach, NULL, NULL);
    435 
    436 static int
    437 radeonfb_match(device_t parent, cfdata_t match, void *aux)
    438 {
    439 	const struct pci_attach_args	*pa = aux;
    440 	int			i;
    441 
    442 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_ATI)
    443 		return 0;
    444 
    445 	for (i = 0; radeonfb_devices[i].devid; i++) {
    446 		if (PCI_PRODUCT(pa->pa_id) == radeonfb_devices[i].devid)
    447 			return 100;	/* high to defeat VGA/VESA */
    448 	}
    449 
    450 	return 0;
    451 }
    452 
    453 static void
    454 radeonfb_attach(device_t parent, device_t dev, void *aux)
    455 {
    456 	struct radeonfb_softc	*sc = device_private(dev);
    457 	const struct pci_attach_args	*pa = aux;
    458 	const char		*mptr;
    459 	bus_size_t		bsz;
    460 	pcireg_t		screg;
    461 	int			i, j, fg, bg, ul, flags;
    462 	uint32_t		v;
    463 
    464 	sc->sc_dev = dev;
    465 	sc->sc_id = pa->pa_id;
    466 	for (i = 0; radeonfb_devices[i].devid; i++) {
    467 		if (PCI_PRODUCT(sc->sc_id) == radeonfb_devices[i].devid)
    468 			break;
    469 	}
    470 
    471 	pci_aprint_devinfo(pa, NULL);
    472 
    473 	DPRINTF(("%s", prop_dictionary_externalize(device_properties(dev))));
    474 
    475 	KASSERT(radeonfb_devices[i].devid != 0);
    476 	sc->sc_pt = pa->pa_tag;
    477 	sc->sc_iot = pa->pa_iot;
    478 	sc->sc_pc = pa->pa_pc;
    479 	sc->sc_family = radeonfb_devices[i].family;
    480 	sc->sc_flags = radeonfb_devices[i].flags;
    481 
    482 	/* enable memory and IO access */
    483 	screg = pci_conf_read(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG);
    484 	screg |= PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE;
    485 	pci_conf_write(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG, screg);
    486 
    487 	/*
    488 	 * Some flags are general to entire chip families, and rather
    489 	 * than clutter up the table with them, we go ahead and set
    490 	 * them here.
    491 	 */
    492 	switch (sc->sc_family) {
    493 	case RADEON_RS100:
    494 	case RADEON_RS200:
    495 		sc->sc_flags |= RFB_IGP | RFB_RV100;
    496 		break;
    497 
    498 	case RADEON_RV100:
    499 	case RADEON_RV200:
    500 	case RADEON_RV250:
    501 	case RADEON_RV280:
    502 		sc->sc_flags |= RFB_RV100;
    503 		break;
    504 
    505 	case RADEON_RS300:
    506 		sc->sc_flags |= RFB_SDAC | RFB_IGP | RFB_RV100;
    507 		break;
    508 
    509 	case RADEON_R300:
    510 	case RADEON_RV350:
    511 	case RADEON_R350:
    512 	case RADEON_RV380:
    513 	case RADEON_R420:
    514 		/* newer chips */
    515 		sc->sc_flags |= RFB_R300;
    516 		break;
    517 
    518 	case RADEON_R100:
    519 		sc->sc_flags |= RFB_NCRTC2;
    520 		break;
    521 	}
    522 
    523 	if ((sc->sc_family == RADEON_RV200) ||
    524 	    (sc->sc_family == RADEON_RV250) ||
    525 	    (sc->sc_family == RADEON_RV280) ||
    526 	    (sc->sc_family == RADEON_RV350)) {
    527 		bool inverted = 0;
    528 		/* backlight level is linear */
    529 		DPRINTF(("found RV* chip, backlight is supposedly linear\n"));
    530 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
    531 		    "backlight_level_reverted", &inverted);
    532 		if (inverted) {
    533 			DPRINTF(("nope, it's inverted\n"));
    534 			sc->sc_flags |= RFB_INV_BLIGHT;
    535 		}
    536 	} else
    537 		sc->sc_flags |= RFB_INV_BLIGHT;
    538 
    539 	/*
    540 	 * XXX: to support true multihead, this must change.
    541 	 */
    542 	sc->sc_ndisplays = 1;
    543 
    544 	/* XXX: */
    545 	if (!HAS_CRTC2(sc)) {
    546 		sc->sc_ndisplays = 1;
    547 	}
    548 
    549 	if (pci_mapreg_map(pa, RADEON_MAPREG_MMIO, PCI_MAPREG_TYPE_MEM,	0,
    550 		&sc->sc_regt, &sc->sc_regh, &sc->sc_regaddr,
    551 		&sc->sc_regsz) != 0) {
    552 		aprint_error("%s: unable to map registers!\n", XNAME(sc));
    553 		goto error;
    554 	}
    555 
    556 	if (pci_mapreg_info(sc->sc_pc, sc->sc_pt, PCI_MAPREG_ROM,
    557 	     PCI_MAPREG_TYPE_ROM, &sc->sc_romaddr, &sc->sc_romsz, &flags) != 0)
    558 	{
    559 		aprint_error("%s: unable to find ROM!\n", XNAME(sc));
    560 		goto error;
    561 	}
    562 	sc->sc_romt = sc->sc_memt;
    563 
    564 	sc->sc_mapped = TRUE;
    565 
    566 	/* scratch register test... */
    567 	if (radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0x55555555) ||
    568 	    radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0xaaaaaaaa)) {
    569 		aprint_error("%s: scratch register test failed!\n", XNAME(sc));
    570 		goto error;
    571 	}
    572 
    573 	PRINTREG(RADEON_CRTC_EXT_CNTL);
    574 	PRINTREG(RADEON_CRTC_GEN_CNTL);
    575 	PRINTREG(RADEON_CRTC2_GEN_CNTL);
    576 	PRINTREG(RADEON_DISP_OUTPUT_CNTL);
    577 	PRINTREG(RADEON_DAC_CNTL2);
    578 	PRINTREG(RADEON_BIOS_4_SCRATCH);
    579 	PRINTREG(RADEON_FP_GEN_CNTL);
    580 	sc->sc_fp_gen_cntl = GET32(sc, RADEON_FP_GEN_CNTL);
    581 	PRINTREG(RADEON_FP2_GEN_CNTL);
    582 	PRINTREG(RADEON_TMDS_CNTL);
    583 	PRINTREG(RADEON_TMDS_TRANSMITTER_CNTL);
    584 	PRINTREG(RADEON_TMDS_PLL_CNTL);
    585 	PRINTREG(RADEON_LVDS_GEN_CNTL);
    586 	PRINTREG(RADEON_DISP_HW_DEBUG);
    587 	PRINTREG(RADEON_PIXCLKS_CNTL);
    588 	PRINTREG(RADEON_CRTC_H_SYNC_STRT_WID);
    589 	PRINTREG(RADEON_FP_H_SYNC_STRT_WID);
    590 	PRINTREG(RADEON_CRTC2_H_SYNC_STRT_WID);
    591 	PRINTREG(RADEON_FP_H2_SYNC_STRT_WID);
    592 	if (IS_RV100(sc))
    593 		PUT32(sc, RADEON_TMDS_PLL_CNTL, 0xa27);
    594 
    595 	/* XXX
    596 	 * according to xf86-video-radeon R3xx has this bit backwards
    597 	 */
    598 	if (IS_R300(sc)) {
    599 		PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    600 		    0,
    601 		    ~(RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST));
    602 	} else {
    603 		PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    604 		    RADEON_TMDS_TRANSMITTER_PLLEN,
    605 		    ~(RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST));
    606 	}
    607 
    608 	radeonfb_i2c_init(sc);
    609 
    610 	radeonfb_loadbios(sc, pa);
    611 
    612 #ifdef	RADEONFB_BIOS_INIT
    613 	if (radeonfb_bios_init(sc)) {
    614 		aprint_error("%s: BIOS inititialization failed\n", XNAME(sc));
    615 	}
    616 #endif
    617 
    618 	if (radeonfb_getclocks(sc)) {
    619 		aprint_error("%s: Unable to get reference clocks from BIOS\n",
    620 		    XNAME(sc));
    621 		goto error;
    622 	}
    623 
    624 	if (radeonfb_gettmds(sc)) {
    625 		aprint_error("%s: Unable to identify TMDS PLL settings\n",
    626 		    XNAME(sc));
    627 		goto error;
    628 	}
    629 
    630 	aprint_verbose("%s: refclk = %d.%03d MHz, refdiv = %d "
    631 	    "minpll = %d, maxpll = %d\n", XNAME(sc),
    632 	    (int)sc->sc_refclk / 1000, (int)sc->sc_refclk % 1000,
    633 	    (int)sc->sc_refdiv, (int)sc->sc_minpll, (int)sc->sc_maxpll);
    634 
    635 	radeonfb_getconnectors(sc);
    636 
    637 	radeonfb_set_fbloc(sc);
    638 
    639 	/* 64 MB should be enough -- more just wastes map entries */
    640 	if (sc->sc_memsz > (64 << 20))
    641 		sc->sc_memsz = (64 << 20);
    642 
    643 	for (i = 0; radeonfb_limits[i].size; i++) {
    644 		if (sc->sc_memsz >= radeonfb_limits[i].size) {
    645 			sc->sc_maxx = radeonfb_limits[i].maxx;
    646 			sc->sc_maxy = radeonfb_limits[i].maxy;
    647 			sc->sc_maxbpp = radeonfb_limits[i].maxbpp;
    648 			/* framebuffer offset, start at a 4K page */
    649 			sc->sc_fboffset = sc->sc_memsz /
    650 			    radeonfb_limits[i].maxdisp;
    651 			/*
    652 			 * we use the fbsize to figure out where we can store
    653 			 * things like cursor data.
    654 			 */
    655 			sc->sc_fbsize =
    656 			    ROUNDUP(ROUNDUP(sc->sc_maxx * sc->sc_maxbpp / 8 ,
    657 					RADEON_STRIDEALIGN) * sc->sc_maxy,
    658 				4096);
    659 			break;
    660 		}
    661 	}
    662 
    663 
    664 	radeonfb_init_misc(sc);
    665 
    666 	/* program the DAC wirings */
    667 	for (i = 0; i < (HAS_CRTC2(sc) ? 2 : 1); i++) {
    668 		switch (sc->sc_ports[i].rp_dac_type) {
    669 		case RADEON_DAC_PRIMARY:
    670 			PATCH32(sc, RADEON_DAC_CNTL2,
    671 			    i ? RADEON_DAC2_DAC_CLK_SEL : 0,
    672 			    ~RADEON_DAC2_DAC_CLK_SEL);
    673 			break;
    674 		case RADEON_DAC_TVDAC:
    675 			/* we always use the TVDAC to drive a secondary analog
    676 			 * CRT for now.  if we ever support TV-out this will
    677 			 * have to change.
    678 			 */
    679 			SET32(sc, RADEON_DAC_CNTL2,
    680 			    RADEON_DAC2_DAC2_CLK_SEL);
    681 			PATCH32(sc, RADEON_DISP_HW_DEBUG,
    682 			    i ? 0 : RADEON_CRT2_DISP1_SEL,
    683 			    ~RADEON_CRT2_DISP1_SEL);
    684 			/* we're using CRTC2 for the 2nd port */
    685 			if (sc->sc_ports[i].rp_number == 1) {
    686 				PATCH32(sc, RADEON_DISP_OUTPUT_CNTL,
    687 				    RADEON_DISP_DAC2_SOURCE_CRTC2,
    688 				    ~RADEON_DISP_DAC2_SOURCE_MASK);
    689 			}
    690 
    691 			break;
    692 		}
    693 		DPRINTF(("%s: port %d tmds type %d\n", __func__, i,
    694 		    sc->sc_ports[i].rp_tmds_type));
    695 		switch (sc->sc_ports[i].rp_tmds_type) {
    696 		case RADEON_TMDS_INT:
    697 			/* point FP0 at the CRTC this port uses */
    698 			DPRINTF(("%s: plugging internal TMDS into CRTC %d\n",
    699 			    __func__, sc->sc_ports[i].rp_number));
    700 			if (IS_R300(sc)) {
    701 				PATCH32(sc, RADEON_FP_GEN_CNTL,
    702 				    sc->sc_ports[i].rp_number ?
    703 				      R200_FP_SOURCE_SEL_CRTC2 :
    704 				      R200_FP_SOURCE_SEL_CRTC1,
    705 				    ~R200_FP_SOURCE_SEL_MASK);
    706 			} else {
    707 				PATCH32(sc, RADEON_FP_GEN_CNTL,
    708 				    sc->sc_ports[i].rp_number ?
    709 				      RADEON_FP_SEL_CRTC2 :
    710 				      RADEON_FP_SEL_CRTC1,
    711 				    ~RADEON_FP_SEL_MASK);
    712 			}
    713 			break;
    714 		case RADEON_TMDS_EXT:
    715 			/* point FP2 at the CRTC this port uses */
    716 			DPRINTF(("%s: plugging external TMDS into CRTC %d\n",
    717 			    __func__, sc->sc_ports[i].rp_number));
    718 			if (IS_R300(sc)) {
    719 				PATCH32(sc, RADEON_FP2_GEN_CNTL,
    720 				    sc->sc_ports[i].rp_number ?
    721 				      R200_FP2_SOURCE_SEL_CRTC2 :
    722 				      R200_FP2_SOURCE_SEL_CRTC1,
    723 				    ~R200_FP2_SOURCE_SEL_CRTC2);
    724 			} else {
    725 				PATCH32(sc, RADEON_FP2_GEN_CNTL,
    726 				    sc->sc_ports[i].rp_number ?
    727 				      RADEON_FP2_SRC_SEL_CRTC2 :
    728 				      RADEON_FP2_SRC_SEL_CRTC1,
    729 				    ~RADEON_FP2_SRC_SEL_CRTC2);
    730 			}
    731 			break;
    732 		}
    733 	}
    734 	PRINTREG(RADEON_DAC_CNTL2);
    735 	PRINTREG(RADEON_DISP_HW_DEBUG);
    736 
    737 	PRINTREG(RADEON_DAC_CNTL);
    738 	/* other DAC programming */
    739 	v = GET32(sc, RADEON_DAC_CNTL);
    740 	v &= (RADEON_DAC_RANGE_CNTL_MASK | RADEON_DAC_BLANKING);
    741 	v |= RADEON_DAC_MASK_ALL | RADEON_DAC_8BIT_EN;
    742 	PUT32(sc, RADEON_DAC_CNTL, v);
    743 	PRINTREG(RADEON_DAC_CNTL);
    744 
    745 	/* XXX: this may need more investigation */
    746 	PUT32(sc, RADEON_TV_DAC_CNTL, 0x00280203);
    747 	PRINTREG(RADEON_TV_DAC_CNTL);
    748 
    749 	/* enable TMDS */
    750 	SET32(sc, RADEON_FP_GEN_CNTL,
    751 	    RADEON_FP_TMDS_EN |
    752 		RADEON_FP_CRTC_DONT_SHADOW_VPAR |
    753 		RADEON_FP_CRTC_DONT_SHADOW_HEND);
    754 	/*
    755 	 * XXX
    756 	 * no idea why this is necessary - if I do not clear this bit on my
    757 	 * iBook G4 the screen remains black, even though it's already clear.
    758 	 * It needs to be set on my Sun XVR-100 for the DVI port to work
    759 	 * TODO:
    760 	 * see if this is still necessary now that CRTCs, DACs and outputs are
    761 	 * getting wired up in a halfway sane way
    762 	 */
    763 	if (sc->sc_fp_gen_cntl & RADEON_FP_SEL_CRTC2) {
    764 		SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    765 	} else {
    766 		CLR32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    767 	}
    768 
    769 	/*
    770 	 * we use bus_space_map instead of pci_mapreg, because we don't
    771 	 * need the full aperature space.  no point in wasting virtual
    772 	 * address space we don't intend to use, right?
    773 	 */
    774 	if ((sc->sc_memsz < (4096 * 1024)) ||
    775 	    (pci_mapreg_info(sc->sc_pc, sc->sc_pt, RADEON_MAPREG_VRAM,
    776 		PCI_MAPREG_TYPE_MEM, &sc->sc_memaddr, &bsz, NULL) != 0) ||
    777 	    (bsz < sc->sc_memsz)) {
    778 		sc->sc_memsz = 0;
    779 		aprint_error("%s: Bad frame buffer configuration\n",
    780 		    XNAME(sc));
    781 		goto error;
    782 	}
    783 
    784 	sc->sc_memt = pa->pa_memt;
    785 	if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
    786 		BUS_SPACE_MAP_LINEAR, &sc->sc_memh) != 0) {
    787 		sc->sc_memsz = 0;
    788 		aprint_error("%s: Unable to map frame buffer\n", XNAME(sc));
    789 		goto error;
    790 	}
    791 
    792 	aprint_normal("%s: %d MB aperture at 0x%08x, "
    793 	    "%d KB registers at 0x%08x\n", XNAME(sc),
    794 	    (int)sc->sc_memsz >> 20, (unsigned)sc->sc_memaddr,
    795 	    (int)sc->sc_regsz >> 10, (unsigned)sc->sc_regaddr);
    796 
    797 	/* setup default video mode from devprop (allows PROM override) */
    798 	sc->sc_defaultmode = radeonfb_default_mode;
    799 	if (prop_dictionary_get_cstring_nocopy(device_properties(sc->sc_dev),
    800 	    "videomode", &mptr)) {
    801 
    802 		strncpy(sc->sc_modebuf, mptr, sizeof(sc->sc_modebuf));
    803 		sc->sc_defaultmode = sc->sc_modebuf;
    804 	}
    805 
    806 	/* initialize some basic display parameters */
    807 	for (i = 0; i < sc->sc_ndisplays; i++) {
    808 		struct radeonfb_display *dp = &sc->sc_displays[i];
    809 		struct rasops_info *ri;
    810 		long defattr;
    811 		struct wsemuldisplaydev_attach_args aa;
    812 
    813 		/*
    814 		 * Figure out how many "displays" (desktops) we are going to
    815 		 * support.  If more than one, then each CRTC gets its own
    816 		 * programming.
    817 		 *
    818 		 * XXX: this code needs to change to support mergedfb.
    819 		 * XXX: would be nice to allow this to be overridden
    820 		 */
    821 		if (HAS_CRTC2(sc) && (sc->sc_ndisplays == 1)) {
    822 			DPRINTF(("dual crtcs!\n"));
    823 			dp->rd_ncrtcs = 2;
    824 			dp->rd_crtcs[0].rc_port =
    825 			    &sc->sc_ports[0];
    826 			dp->rd_crtcs[0].rc_number = sc->sc_ports[0].rp_number;
    827 			dp->rd_crtcs[1].rc_port =
    828 			    &sc->sc_ports[1];
    829 			dp->rd_crtcs[1].rc_number = sc->sc_ports[1].rp_number;
    830 		} else {
    831 			dp->rd_ncrtcs = 1;
    832 			dp->rd_crtcs[0].rc_port =
    833 			    &sc->sc_ports[i];
    834 			dp->rd_crtcs[0].rc_number = sc->sc_ports[i].rp_number;
    835 		}
    836 
    837 		dp->rd_softc = sc;
    838 		dp->rd_wsmode = WSDISPLAYIO_MODE_EMUL;
    839 		dp->rd_bpp = RADEONFB_DEFAULT_DEPTH;	/* XXX */
    840 
    841 		/* for text mode, we pick a resolution that won't
    842 		 * require panning */
    843 		radeonfb_pickres(dp, &dp->rd_virtx, &dp->rd_virty, 0);
    844 
    845 		aprint_normal("%s: display %d: "
    846 		    "initial virtual resolution %dx%d at %d bpp\n",
    847 		    XNAME(sc), i, dp->rd_virtx, dp->rd_virty, dp->rd_bpp);
    848 		aprint_normal_dev(sc->sc_dev, "using %d MB per display\n",
    849 		    sc->sc_fboffset >> 20);
    850 		/* now select the *video mode* that we will use */
    851 		for (j = 0; j < dp->rd_ncrtcs; j++) {
    852 			const struct videomode *vmp;
    853 			vmp = radeonfb_port_mode(sc, dp->rd_crtcs[j].rc_port,
    854 			    dp->rd_virtx, dp->rd_virty);
    855 
    856 			/*
    857 			 * virtual resolution should be at least as high as
    858 			 * physical
    859 			 */
    860 			if (dp->rd_virtx < vmp->hdisplay ||
    861 			    dp->rd_virty < vmp->vdisplay) {
    862 				dp->rd_virtx = vmp->hdisplay;
    863 				dp->rd_virty = vmp->vdisplay;
    864 			}
    865 
    866 			dp->rd_crtcs[j].rc_videomode = *vmp;
    867 			printf("%s: port %d: physical %dx%d %dHz\n",
    868 			    XNAME(sc), j, vmp->hdisplay, vmp->vdisplay,
    869 			    DIVIDE(DIVIDE(vmp->dot_clock * 1000,
    870 				       vmp->htotal), vmp->vtotal));
    871 		}
    872 
    873 		/* N.B.: radeon wants 64-byte aligned stride */
    874 		dp->rd_stride = dp->rd_virtx * dp->rd_bpp / 8;
    875 		dp->rd_stride = ROUNDUP(dp->rd_stride, RADEON_STRIDEALIGN);
    876 		DPRINTF(("stride: %d %d\n", dp->rd_stride, dp->rd_virtx));
    877 
    878 		dp->rd_offset = sc->sc_fboffset * i;
    879 		dp->rd_fbptr = (vaddr_t)bus_space_vaddr(sc->sc_memt,
    880 		    sc->sc_memh) + dp->rd_offset;
    881 		dp->rd_curoff = sc->sc_fboffset - 4096;	/* 4KB cursor space */
    882 		dp->rd_curptr = dp->rd_fbptr + dp->rd_curoff;
    883 
    884 		DPRINTF(("fpbtr = %p\n", (void *)dp->rd_fbptr));
    885 
    886 		switch (dp->rd_bpp) {
    887 		case 8:
    888 			dp->rd_format = 2;
    889 			break;
    890 		case 32:
    891 			dp->rd_format = 6;
    892 			break;
    893 		default:
    894 			aprint_error("%s: bad depth %d\n", XNAME(sc),
    895 			    dp->rd_bpp);
    896 			goto error;
    897 		}
    898 
    899 		DPRINTF(("init engine\n"));
    900 		/* XXX: this seems suspicious - per display engine
    901 		   initialization? */
    902 		radeonfb_engine_init(dp);
    903 
    904 		/* copy the template into place */
    905 		dp->rd_wsscreens_storage[0] = radeonfb_stdscreen;
    906 		dp->rd_wsscreens = dp->rd_wsscreens_storage;
    907 
    908 		/* and make up the list */
    909 		dp->rd_wsscreenlist.nscreens = 1;
    910 		dp->rd_wsscreenlist.screens = (void *)&dp->rd_wsscreens;
    911 
    912 		vcons_init(&dp->rd_vd, dp, dp->rd_wsscreens,
    913 		    &radeonfb_accessops);
    914 
    915 		dp->rd_vd.init_screen = radeonfb_init_screen;
    916 
    917 #ifdef RADEONFB_DEBUG
    918 		dp->rd_virty -= 200;
    919 #endif
    920 
    921 		dp->rd_console = 0;
    922 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
    923 		    "is_console", &dp->rd_console);
    924 
    925 		dp->rd_vscreen.scr_flags |= VCONS_SCREEN_IS_STATIC;
    926 
    927 
    928 		vcons_init_screen(&dp->rd_vd, &dp->rd_vscreen,
    929 		    dp->rd_console, &defattr);
    930 
    931 		ri = &dp->rd_vscreen.scr_ri;
    932 
    933 		/* clear the screen */
    934 		rasops_unpack_attr(defattr, &fg, &bg, &ul);
    935 		dp->rd_bg = ri->ri_devcmap[bg & 0xf];
    936 		radeonfb_rectfill(dp, 0, 0, ri->ri_width, ri->ri_height,
    937 		    dp->rd_bg);
    938 
    939 		dp->rd_wsscreens->textops = &ri->ri_ops;
    940 		dp->rd_wsscreens->capabilities = ri->ri_caps;
    941 		dp->rd_wsscreens->nrows = ri->ri_rows;
    942 		dp->rd_wsscreens->ncols = ri->ri_cols;
    943 
    944 #ifdef SPLASHSCREEN
    945 		dp->rd_splash.si_depth = ri->ri_depth;
    946 		dp->rd_splash.si_bits = ri->ri_bits;
    947 		dp->rd_splash.si_hwbits = ri->ri_hwbits;
    948 		dp->rd_splash.si_width = ri->ri_width;
    949 		dp->rd_splash.si_height = ri->ri_height;
    950 		dp->rd_splash.si_stride = ri->ri_stride;
    951 		dp->rd_splash.si_fillrect = NULL;
    952 #endif
    953 		dp->rd_gc.gc_bitblt = radeonfb_bitblt;
    954 		dp->rd_gc.gc_rectfill = radeonfb_rectfill_a;
    955 		dp->rd_gc.gc_rop = RADEON_ROP3_S;
    956 		dp->rd_gc.gc_blitcookie = dp;
    957 		/*
    958 		 * use memory between framebuffer and cursor area as glyph
    959 		 * cache, cap at 4096 lines
    960 		 */
    961 		glyphcache_init(&dp->rd_gc, dp->rd_virty + 4,
    962 		    min(4096,
    963 		        (dp->rd_curoff / dp->rd_stride) - (dp->rd_virty + 4)),
    964 		    dp->rd_virtx,
    965 		    ri->ri_font->fontwidth,
    966 		    ri->ri_font->fontheight,
    967 		    defattr);
    968 		dp->rd_vd.show_screen_cookie = &dp->rd_gc;
    969 		dp->rd_vd.show_screen_cb = glyphcache_adapt;
    970 
    971 		if (dp->rd_console) {
    972 
    973 			radeonfb_modeswitch(dp);
    974 			wsdisplay_cnattach(dp->rd_wsscreens, ri, 0, 0,
    975 			    defattr);
    976 #ifdef SPLASHSCREEN
    977 			if (splash_render(&dp->rd_splash,
    978 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
    979 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    980 			else
    981 #endif
    982 				vcons_replay_msgbuf(&dp->rd_vscreen);
    983 		} else {
    984 
    985 			/*
    986 			 * since we're not the console we can postpone
    987 			 * the rest until someone actually allocates a
    988 			 * screen for us.  but we do clear the screen
    989 			 * at least.
    990 			 */
    991 			memset(ri->ri_bits, 0, 1024);
    992 
    993 			radeonfb_modeswitch(dp);
    994 #ifdef SPLASHSCREEN
    995 			if (splash_render(&dp->rd_splash,
    996 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
    997 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    998 #endif
    999 		}
   1000 
   1001 		aa.console = dp->rd_console;
   1002 		aa.scrdata = &dp->rd_wsscreenlist;
   1003 		aa.accessops = &radeonfb_accessops;
   1004 		aa.accesscookie = &dp->rd_vd;
   1005 
   1006 		config_found(sc->sc_dev, &aa, wsemuldisplaydevprint);
   1007 
   1008 		radeonfb_blank(dp, 0);
   1009 
   1010 		/* Initialise delayed lvds operations for backlight. */
   1011 		callout_init(&dp->rd_bl_lvds_co, 0);
   1012 		callout_setfunc(&dp->rd_bl_lvds_co,
   1013 				radeonfb_lvds_callout, dp);
   1014 		dp->rd_bl_on = 1;
   1015 		dp->rd_bl_level = radeonfb_get_backlight(dp);
   1016 		radeonfb_set_backlight(dp, dp->rd_bl_level);
   1017 	}
   1018 
   1019 	for (i = 0; i < RADEON_NDISPLAYS; i++)
   1020 		radeonfb_init_palette(&sc->sc_displays[i]);
   1021 
   1022 	if (HAS_CRTC2(sc)) {
   1023 		CLR32(sc, RADEON_CRTC2_GEN_CNTL, RADEON_CRTC2_DISP_DIS);
   1024 	}
   1025 
   1026 	CLR32(sc, RADEON_CRTC_EXT_CNTL, RADEON_CRTC_DISPLAY_DIS);
   1027 	SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_FPON);
   1028 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_UP,
   1029 	    radeonfb_brightness_up, TRUE);
   1030 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_DOWN,
   1031 	    radeonfb_brightness_down, TRUE);
   1032 
   1033 	/*
   1034 	 * if we attach a DRM we need to unmap registers in
   1035 	 * WSDISPLAYIO_MODE_MAPPED, since this keeps us from doing things like
   1036 	 * screen blanking we only do it if needed
   1037 	 */
   1038 	sc->sc_needs_unmap =
   1039 	    (config_found_ia(dev, "drm", aux, radeonfb_drm_print) != 0);
   1040 	DPRINTF(("needs_unmap: %d\n", sc->sc_needs_unmap));
   1041 
   1042 	PRINTREG(RADEON_CRTC_EXT_CNTL);
   1043 	PRINTREG(RADEON_CRTC_GEN_CNTL);
   1044 	PRINTREG(RADEON_CRTC2_GEN_CNTL);
   1045 	PRINTREG(RADEON_DISP_OUTPUT_CNTL);
   1046 	PRINTREG(RADEON_DAC_CNTL2);
   1047 	PRINTREG(RADEON_FP_GEN_CNTL);
   1048 	PRINTREG(RADEON_FP2_GEN_CNTL);
   1049 	PRINTREG(RADEON_TMDS_CNTL);
   1050 	PRINTREG(RADEON_TMDS_TRANSMITTER_CNTL);
   1051 	PRINTREG(RADEON_TMDS_PLL_CNTL);
   1052 	PRINTREG(RADEON_PIXCLKS_CNTL);
   1053 
   1054 	return;
   1055 
   1056 error:
   1057 	if (sc->sc_biossz)
   1058 		free(sc->sc_bios, M_DEVBUF);
   1059 
   1060 	if (sc->sc_regsz)
   1061 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
   1062 
   1063 	if (sc->sc_memsz)
   1064 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
   1065 }
   1066 
   1067 static void
   1068 radeonfb_map(struct radeonfb_softc *sc)
   1069 {
   1070 	if (!sc->sc_mapped) {
   1071 		if (bus_space_map(sc->sc_regt, sc->sc_regaddr, sc->sc_regsz, 0,
   1072 		    &sc->sc_regh) != 0) {
   1073 			aprint_error_dev(sc->sc_dev,
   1074 			    "unable to map registers!\n");
   1075 			return;
   1076 		}
   1077 		if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
   1078 		    BUS_SPACE_MAP_LINEAR, &sc->sc_memh) != 0) {
   1079 			sc->sc_memsz = 0;
   1080 			aprint_error_dev(sc->sc_dev,
   1081 			    "Unable to map frame buffer\n");
   1082 			return;
   1083 		}
   1084 		sc->sc_mapped = TRUE;
   1085 	}
   1086 }
   1087 
   1088 static void
   1089 radeonfb_unmap(struct radeonfb_softc *sc)
   1090 {
   1091 	if (!sc->sc_needs_unmap)
   1092 		return;
   1093 
   1094 	if (sc->sc_mapped) {
   1095 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
   1096 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
   1097 		sc->sc_mapped = FALSE;
   1098 	}
   1099 }
   1100 
   1101 static int
   1102 radeonfb_drm_print(void *aux, const char *pnp)
   1103 {
   1104 	if (pnp)
   1105 		aprint_normal("drm at %s", pnp);
   1106 	return (UNCONF);
   1107 }
   1108 
   1109 int
   1110 radeonfb_ioctl(void *v, void *vs,
   1111     unsigned long cmd, void *d, int flag, struct lwp *l)
   1112 {
   1113 	struct vcons_data	*vd;
   1114 	struct radeonfb_display	*dp;
   1115 	struct radeonfb_softc	*sc;
   1116 	struct wsdisplay_param  *param;
   1117 	struct vcons_screen 	*ms;
   1118 
   1119 	vd = (struct vcons_data *)v;
   1120 	ms = vd->active;
   1121 	dp = (struct radeonfb_display *)vd->cookie;
   1122 	sc = dp->rd_softc;
   1123 
   1124 	/* can't do these without registers being mapped */
   1125 	if (!sc->sc_mapped) {
   1126 		switch (cmd) {
   1127 			case WSDISPLAYIO_GVIDEO:
   1128 			case WSDISPLAYIO_SVIDEO:
   1129 			case WSDISPLAYIO_GETCMAP:
   1130 			case WSDISPLAYIO_PUTCMAP:
   1131 			case WSDISPLAYIO_SCURSOR:
   1132 			case WSDISPLAYIO_GCURPOS:
   1133 			case WSDISPLAYIO_SCURPOS:
   1134 			case WSDISPLAYIO_SETPARAM:
   1135 				return EINVAL;
   1136 		}
   1137 	}
   1138 
   1139 	switch (cmd) {
   1140 	case WSDISPLAYIO_GTYPE:
   1141 		*(unsigned *)d = WSDISPLAY_TYPE_PCIMISC;
   1142 		return 0;
   1143 
   1144 	case WSDISPLAYIO_GINFO:
   1145 		if (vd->active != NULL) {
   1146 			struct wsdisplay_fbinfo *fb;
   1147 			fb = (struct wsdisplay_fbinfo *)d;
   1148 			fb->width = dp->rd_virtx;
   1149 			fb->height = dp->rd_virty;
   1150 			fb->depth = dp->rd_bpp;
   1151 			fb->cmsize = 256;
   1152 			return 0;
   1153 		} else
   1154 			return ENODEV;
   1155 	case WSDISPLAYIO_GVIDEO:
   1156 		if (radeonfb_isblank(dp))
   1157 			*(unsigned *)d = WSDISPLAYIO_VIDEO_OFF;
   1158 		else
   1159 			*(unsigned *)d = WSDISPLAYIO_VIDEO_ON;
   1160 		return 0;
   1161 
   1162 	case WSDISPLAYIO_SVIDEO:
   1163 		radeonfb_blank(dp,
   1164 		    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_OFF));
   1165 		radeonfb_switch_backlight(dp,
   1166 		    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_ON));
   1167 		return 0;
   1168 
   1169 	case WSDISPLAYIO_GETCMAP:
   1170 		if (dp->rd_bpp == 8)
   1171 			return radeonfb_getcmap(dp,
   1172 			    (struct wsdisplay_cmap *)d);
   1173 		return EINVAL;
   1174 
   1175 	case WSDISPLAYIO_PUTCMAP:
   1176 		if (dp->rd_bpp == 8)
   1177 			return radeonfb_putcmap(dp,
   1178 			    (struct wsdisplay_cmap *)d);
   1179 		return EINVAL;
   1180 
   1181 	case WSDISPLAYIO_LINEBYTES:
   1182 		*(unsigned *)d = dp->rd_stride;
   1183 		return 0;
   1184 
   1185 	case WSDISPLAYIO_SMODE:
   1186 		if (*(int *)d != dp->rd_wsmode) {
   1187 			dp->rd_wsmode = *(int *)d;
   1188 			if ((dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) ||
   1189 			    (dp->rd_wsmode == WSDISPLAYIO_MODE_DUMBFB))
   1190 				radeonfb_map(sc);
   1191 
   1192 			if ((dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) &&
   1193 			    (dp->rd_vd.active)) {
   1194 				radeonfb_engine_init(dp);
   1195 				glyphcache_wipe(&dp->rd_gc);
   1196 				radeonfb_init_palette(dp);
   1197 				radeonfb_modeswitch(dp);
   1198 				radeonfb_rectfill(dp, 0, 0, dp->rd_virtx,
   1199 				    dp->rd_virty, dp->rd_bg);
   1200 				vcons_redraw_screen(dp->rd_vd.active);
   1201 			}
   1202 			if (dp->rd_wsmode == WSDISPLAYIO_MODE_MAPPED)
   1203 				radeonfb_unmap(sc);
   1204 		}
   1205 		return 0;
   1206 
   1207 	case WSDISPLAYIO_GCURMAX:
   1208 		((struct wsdisplay_curpos *)d)->x = RADEON_CURSORMAXX;
   1209 		((struct wsdisplay_curpos *)d)->y = RADEON_CURSORMAXY;
   1210 		return 0;
   1211 
   1212 	case WSDISPLAYIO_SCURSOR:
   1213 		return radeonfb_set_cursor(dp, (struct wsdisplay_cursor *)d);
   1214 
   1215 	case WSDISPLAYIO_GCURSOR:
   1216 		return EPASSTHROUGH;
   1217 
   1218 	case WSDISPLAYIO_GCURPOS:
   1219 		((struct wsdisplay_curpos *)d)->x = dp->rd_cursor.rc_pos.x;
   1220 		((struct wsdisplay_curpos *)d)->y = dp->rd_cursor.rc_pos.y;
   1221 		return 0;
   1222 
   1223 	case WSDISPLAYIO_SCURPOS:
   1224 		return radeonfb_set_curpos(dp, (struct wsdisplay_curpos *)d);
   1225 
   1226 	case WSDISPLAYIO_SSPLASH:
   1227 #if defined(SPLASHSCREEN)
   1228 		if (*(int *)d == 1) {
   1229 			SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
   1230 			splash_render(&dp->rd_splash,
   1231 			    SPLASH_F_CENTER|SPLASH_F_FILL);
   1232 		} else
   1233 			SCREEN_ENABLE_DRAWING(&dp->rd_vscreen);
   1234 		return 0;
   1235 #else
   1236 		return ENODEV;
   1237 #endif
   1238 	case WSDISPLAYIO_GETPARAM:
   1239 		param = (struct wsdisplay_param *)d;
   1240 		switch (param->param) {
   1241 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
   1242 			param->min = 0;
   1243 			param->max = 255;
   1244 			param->curval = dp->rd_bl_level;
   1245 			return 0;
   1246 		case WSDISPLAYIO_PARAM_BACKLIGHT:
   1247 			param->min = 0;
   1248 			param->max = RADEONFB_BACKLIGHT_MAX;
   1249 			param->curval = dp->rd_bl_on;
   1250 			return 0;
   1251 		}
   1252 		return EPASSTHROUGH;
   1253 
   1254 	case WSDISPLAYIO_SETPARAM:
   1255 		param = (struct wsdisplay_param *)d;
   1256 		switch (param->param) {
   1257 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
   1258 			radeonfb_set_backlight(dp, param->curval);
   1259 			return 0;
   1260 		case WSDISPLAYIO_PARAM_BACKLIGHT:
   1261 			radeonfb_switch_backlight(dp,  param->curval);
   1262 			return 0;
   1263 		}
   1264 		return EPASSTHROUGH;
   1265 
   1266 	/* PCI config read/write passthrough. */
   1267 	case PCI_IOC_CFGREAD:
   1268 	case PCI_IOC_CFGWRITE:
   1269 		return pci_devioctl(sc->sc_pc, sc->sc_pt, cmd, d, flag, l);
   1270 
   1271 	case WSDISPLAYIO_GET_BUSID:
   1272 		return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc,
   1273 		    sc->sc_pt, d);
   1274 
   1275 	case WSDISPLAYIO_GET_EDID: {
   1276 		struct wsdisplayio_edid_info *ei = d;
   1277 		return wsdisplayio_get_edid(sc->sc_dev, ei);
   1278 	}
   1279 
   1280 	case WSDISPLAYIO_GET_FBINFO: {
   1281 		struct wsdisplayio_fbinfo *fbi = d;
   1282 		return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi);
   1283 	}
   1284 
   1285 	default:
   1286 		return EPASSTHROUGH;
   1287 	}
   1288 }
   1289 
   1290 paddr_t
   1291 radeonfb_mmap(void *v, void *vs, off_t offset, int prot)
   1292 {
   1293 	struct vcons_data	*vd;
   1294 	struct radeonfb_display	*dp;
   1295 	struct radeonfb_softc	*sc;
   1296 	paddr_t			pa;
   1297 
   1298 	vd = (struct vcons_data *)v;
   1299 	dp = (struct radeonfb_display *)vd->cookie;
   1300 	sc = dp->rd_softc;
   1301 
   1302 	if ((offset >= 0) && (offset < (dp->rd_virty * dp->rd_stride))) {
   1303 		pa = bus_space_mmap(sc->sc_memt,
   1304 		    sc->sc_memaddr + dp->rd_offset + offset, 0,
   1305 		    prot, BUS_SPACE_MAP_LINEAR);
   1306 		return pa;
   1307 	}
   1308 
   1309 	/*
   1310 	 * restrict all other mappings to processes with superuser privileges
   1311 	 * or the kernel itself
   1312 	 */
   1313 	if (kauth_authorize_machdep(kauth_cred_get(), KAUTH_MACHDEP_UNMANAGEDMEM,
   1314 	    NULL, NULL, NULL, NULL) != 0) {
   1315 		aprint_error_dev(sc->sc_dev, "mmap() rejected.\n");
   1316 		return -1;
   1317 	}
   1318 
   1319 	if ((offset >= sc->sc_regaddr) &&
   1320 	    (offset < sc->sc_regaddr + sc->sc_regsz)) {
   1321 		return bus_space_mmap(sc->sc_regt, offset, 0, prot,
   1322 		    BUS_SPACE_MAP_LINEAR);
   1323 	}
   1324 
   1325 	if ((offset >= sc->sc_memaddr) &&
   1326 	    (offset < sc->sc_memaddr + sc->sc_memsz)) {
   1327 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1328 		    BUS_SPACE_MAP_LINEAR);
   1329 	}
   1330 
   1331 	if ((offset >= sc->sc_romaddr) &&
   1332 	    (offset < sc->sc_romaddr + sc->sc_romsz)) {
   1333 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1334 		    BUS_SPACE_MAP_LINEAR);
   1335 	}
   1336 
   1337 #ifdef PCI_MAGIC_IO_RANGE
   1338 	/* allow mapping of IO space */
   1339 	if ((offset >= PCI_MAGIC_IO_RANGE) &&
   1340 	    (offset < PCI_MAGIC_IO_RANGE + 0x10000)) {
   1341 		pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE,
   1342 		    0, prot, 0);
   1343 		return pa;
   1344 	}
   1345 #endif /* PCI_MAGIC_IO_RANGE */
   1346 
   1347 	return -1;
   1348 }
   1349 
   1350 static void
   1351 radeonfb_loadbios(struct radeonfb_softc *sc, const struct pci_attach_args *pa)
   1352 {
   1353 	bus_space_tag_t		romt;
   1354 	bus_space_handle_t	romh, biosh;
   1355 	bus_size_t		romsz;
   1356 	bus_addr_t		ptr;
   1357 
   1358 	if (pci_mapreg_map(pa, PCI_MAPREG_ROM, PCI_MAPREG_TYPE_ROM,
   1359 		BUS_SPACE_MAP_PREFETCHABLE, &romt, &romh, NULL, &romsz) != 0) {
   1360 		aprint_verbose("%s: unable to map BIOS!\n", XNAME(sc));
   1361 		return;
   1362 	}
   1363 
   1364 	pci_find_rom(pa, romt, romh, romsz, PCI_ROM_CODE_TYPE_X86, &biosh,
   1365 	    &sc->sc_biossz);
   1366 	if (sc->sc_biossz == 0) {
   1367 		aprint_verbose("%s: Video BIOS not present\n", XNAME(sc));
   1368 		return;
   1369 	}
   1370 
   1371 	sc->sc_bios = malloc(sc->sc_biossz, M_DEVBUF, M_WAITOK);
   1372 	bus_space_read_region_1(romt, biosh, 0, sc->sc_bios, sc->sc_biossz);
   1373 
   1374 	/* unmap the PCI expansion rom */
   1375 	bus_space_unmap(romt, romh, romsz);
   1376 
   1377 	/* turn off rom decoder now */
   1378 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM,
   1379 	    pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM) &
   1380 	    ~PCI_MAPREG_ROM_ENABLE);
   1381 
   1382 	ptr = GETBIOS16(sc, 0x48);
   1383 	if ((GETBIOS32(sc, ptr + 4) == 0x41544f4d /* "ATOM" */) ||
   1384 	    (GETBIOS32(sc, ptr + 4) == 0x4d4f5441 /* "MOTA" */)) {
   1385 		sc->sc_flags |= RFB_ATOM;
   1386 	}
   1387 
   1388 	aprint_verbose("%s: Found %d KB %s BIOS\n", XNAME(sc),
   1389 	    (unsigned)sc->sc_biossz >> 10, IS_ATOM(sc) ? "ATOM" : "Legacy");
   1390 }
   1391 
   1392 
   1393 uint32_t
   1394 radeonfb_get32(struct radeonfb_softc *sc, uint32_t reg)
   1395 {
   1396 
   1397 	return bus_space_read_4(sc->sc_regt, sc->sc_regh, reg);
   1398 }
   1399 
   1400 void
   1401 radeonfb_put32(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1402 {
   1403 
   1404 	bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, val);
   1405 }
   1406 
   1407 void
   1408 radeonfb_put32s(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1409 {
   1410 
   1411 	bus_space_write_stream_4(sc->sc_regt, sc->sc_regh, reg, val);
   1412 }
   1413 
   1414 void
   1415 radeonfb_mask32(struct radeonfb_softc *sc, uint32_t reg,
   1416     uint32_t andmask, uint32_t ormask)
   1417 {
   1418 	int		s;
   1419 	uint32_t	val;
   1420 
   1421 	s = splhigh();
   1422 	val = radeonfb_get32(sc, reg);
   1423 	val = (val & andmask) | ormask;
   1424 	radeonfb_put32(sc, reg, val);
   1425 	splx(s);
   1426 }
   1427 
   1428 uint32_t
   1429 radeonfb_getindex(struct radeonfb_softc *sc, uint32_t idx)
   1430 {
   1431 	int		s;
   1432 	uint32_t	val;
   1433 
   1434 	s = splhigh();
   1435 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1436 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1437 	splx(s);
   1438 
   1439 	return (val);
   1440 }
   1441 
   1442 void
   1443 radeonfb_putindex(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1444 {
   1445 	int	s;
   1446 
   1447 	s = splhigh();
   1448 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1449 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1450 	splx(s);
   1451 }
   1452 
   1453 void
   1454 radeonfb_maskindex(struct radeonfb_softc *sc, uint32_t idx,
   1455     uint32_t andmask, uint32_t ormask)
   1456 {
   1457 	int		s;
   1458 	uint32_t	val;
   1459 
   1460 	s = splhigh();
   1461 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1462 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1463 	val = (val & andmask) | ormask;
   1464 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1465 	splx(s);
   1466 }
   1467 
   1468 uint32_t
   1469 radeonfb_getpll(struct radeonfb_softc *sc, uint32_t idx)
   1470 {
   1471 	int		s;
   1472 	uint32_t	val;
   1473 
   1474 	s = splhigh();
   1475 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f));
   1476 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1477 	if (HAS_R300CG(sc))
   1478 		radeonfb_r300cg_workaround(sc);
   1479 	splx(s);
   1480 
   1481 	return (val);
   1482 }
   1483 
   1484 void
   1485 radeonfb_putpll(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1486 {
   1487 	int	s;
   1488 
   1489 	s = splhigh();
   1490 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1491 	    RADEON_PLL_WR_EN);
   1492 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1493 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1494 	splx(s);
   1495 }
   1496 
   1497 void
   1498 radeonfb_maskpll(struct radeonfb_softc *sc, uint32_t idx,
   1499     uint32_t andmask, uint32_t ormask)
   1500 {
   1501 	int		s;
   1502 	uint32_t	val;
   1503 
   1504 	s = splhigh();
   1505 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1506 		RADEON_PLL_WR_EN);
   1507 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1508 	val = (val & andmask) | ormask;
   1509 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1510 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1511 	splx(s);
   1512 }
   1513 
   1514 int
   1515 radeonfb_scratch_test(struct radeonfb_softc *sc, int reg, uint32_t v)
   1516 {
   1517 	uint32_t	saved;
   1518 
   1519 	saved = GET32(sc, reg);
   1520 	PUT32(sc, reg, v);
   1521 	if (GET32(sc, reg) != v) {
   1522 		return -1;
   1523 	}
   1524 	PUT32(sc, reg, saved);
   1525 	return 0;
   1526 }
   1527 
   1528 uintmax_t
   1529 radeonfb_getprop_num(struct radeonfb_softc *sc, const char *name,
   1530     uintmax_t defval)
   1531 {
   1532 	prop_number_t	pn;
   1533 	pn = prop_dictionary_get(device_properties(sc->sc_dev), name);
   1534 	if (pn == NULL) {
   1535 		return defval;
   1536 	}
   1537 	KASSERT(prop_object_type(pn) == PROP_TYPE_NUMBER);
   1538 	return (prop_number_integer_value(pn));
   1539 }
   1540 
   1541 int
   1542 radeonfb_getclocks(struct radeonfb_softc *sc)
   1543 {
   1544 	bus_addr_t	ptr;
   1545 	int		refclk = 0;
   1546 	int		refdiv = 0;
   1547 	int		minpll = 0;
   1548 	int		maxpll = 0;
   1549 
   1550 	/* load initial property values if port/board provides them */
   1551 	refclk = radeonfb_getprop_num(sc, "refclk", 0) & 0xffff;
   1552 	refdiv = radeonfb_getprop_num(sc, "refdiv", 0) & 0xffff;
   1553 	minpll = radeonfb_getprop_num(sc, "minpll", 0) & 0xffffffffU;
   1554 	maxpll = radeonfb_getprop_num(sc, "maxpll", 0) & 0xffffffffU;
   1555 
   1556 	PRINTPLL(RADEON_PPLL_REF_DIV);
   1557 	PRINTPLL(RADEON_PPLL_DIV_0);
   1558 	PRINTPLL(RADEON_PPLL_DIV_1);
   1559 	PRINTPLL(RADEON_PPLL_DIV_2);
   1560 	PRINTPLL(RADEON_PPLL_DIV_3);
   1561 	PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   1562 	PRINTPLL(RADEON_P2PLL_REF_DIV);
   1563 	PRINTPLL(RADEON_P2PLL_DIV_0);
   1564 
   1565 	if (refclk && refdiv && minpll && maxpll)
   1566 		goto dontprobe;
   1567 
   1568 	if (!sc->sc_biossz) {
   1569 		/* no BIOS */
   1570 		aprint_verbose("%s: No video BIOS, using default clocks\n",
   1571 		    XNAME(sc));
   1572 		if (IS_IGP(sc))
   1573 			refclk = refclk ? refclk : 1432;
   1574 		else
   1575 			refclk = refclk ? refclk : 2700;
   1576 		refdiv = refdiv ? refdiv : 12;
   1577 		minpll = minpll ? minpll : 12500;
   1578 		/* XXX
   1579 		 * Need to check if the firmware or something programmed a
   1580 		 * higher value than this, and if so, bump it.
   1581 		 * The RV280 in my iBook is unhappy if the PLL input is less
   1582 		 * than 360MHz
   1583 		 */
   1584 		maxpll = maxpll ? maxpll : 40000/*35000*/;
   1585 	} else if (IS_ATOM(sc)) {
   1586 		/* ATOM BIOS */
   1587 		ptr = GETBIOS16(sc, 0x48);
   1588 		ptr = GETBIOS16(sc, ptr + 32);	/* aka MasterDataStart */
   1589 		ptr = GETBIOS16(sc, ptr + 12);	/* pll info block */
   1590 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 82);
   1591 		minpll = minpll ? minpll : GETBIOS16(sc, ptr + 78);
   1592 		maxpll = maxpll ? maxpll : GETBIOS16(sc, ptr + 32);
   1593 		/*
   1594 		 * ATOM BIOS doesn't supply a reference divider, so we
   1595 		 * have to probe for it.
   1596 		 */
   1597 		if (refdiv < 2)
   1598 			refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1599 			    RADEON_PPLL_REF_DIV_MASK;
   1600 		/*
   1601 		 * if probe is zero, just assume one that should work
   1602 		 * for most parts
   1603 		 */
   1604 		if (refdiv < 2)
   1605 			refdiv = 12;
   1606 
   1607 	} else {
   1608 		uint32_t tmp = GETPLL(sc, RADEON_PPLL_REF_DIV);
   1609 		/* Legacy BIOS */
   1610 		ptr = GETBIOS16(sc, 0x48);
   1611 		ptr = GETBIOS16(sc, ptr + 0x30);
   1612 		if (IS_R300(sc)) {
   1613 			refdiv = refdiv ? refdiv :
   1614 			    (tmp & R300_PPLL_REF_DIV_ACC_MASK) >>
   1615 			    R300_PPLL_REF_DIV_ACC_SHIFT;
   1616 		} else {
   1617 			refdiv = refdiv ? refdiv :
   1618 			    tmp & RADEON_PPLL_REF_DIV_MASK;
   1619 		}
   1620 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 0x0E);
   1621 		refdiv = refdiv ? refdiv : GETBIOS16(sc, ptr + 0x10);
   1622 		minpll = minpll ? minpll : GETBIOS32(sc, ptr + 0x12);
   1623 		maxpll = maxpll ? maxpll : GETBIOS32(sc, ptr + 0x16);
   1624 	}
   1625 
   1626 
   1627 dontprobe:
   1628 	sc->sc_refclk = refclk * 10;
   1629 	sc->sc_refdiv = refdiv;
   1630 	sc->sc_minpll = minpll * 10;
   1631 	sc->sc_maxpll = maxpll * 10;
   1632 	return 0;
   1633 }
   1634 
   1635 int
   1636 radeonfb_calc_dividers(struct radeonfb_softc *sc, uint32_t dotclock,
   1637     uint32_t *postdivbit, uint32_t *feedbackdiv, int flags)
   1638 {
   1639 	int		i;
   1640 	uint32_t	outfreq;
   1641 	int		div;
   1642 
   1643 	DPRINTF(("dot clock: %u\n", dotclock));
   1644 	for (i = 0; (div = radeonfb_dividers[i].divider) != 0; i++) {
   1645 
   1646 		if ((flags & NO_ODD_FBDIV) && ((div & 1) != 0))
   1647 			continue;
   1648 
   1649 		/*
   1650 		 * XXX
   1651 		 * the rv350 in my last generation 14" iBook G4 produces
   1652 		 * garbage with dividers > 4. No idea if this is a hardware
   1653 		 * limitation or an error in the divider table.
   1654 		 */
   1655 		if ((sc->sc_family == RADEON_RV350) && (div > 4))
   1656 			continue;
   1657 
   1658 		outfreq = div * dotclock;
   1659 		if ((outfreq >= sc->sc_minpll) &&
   1660 		    (outfreq <= sc->sc_maxpll)) {
   1661 			DPRINTF(("outfreq: %u\n", outfreq));
   1662 			*postdivbit =
   1663 			    ((uint32_t)radeonfb_dividers[i].mask << 16);
   1664 			DPRINTF(("post divider: %d (mask %x)\n", div,
   1665 				    *postdivbit));
   1666 			break;
   1667 		}
   1668 	}
   1669 
   1670 	if (div == 0)
   1671 		return 1;
   1672 
   1673 	*feedbackdiv = DIVIDE(sc->sc_refdiv * outfreq, sc->sc_refclk);
   1674 	DPRINTF(("feedback divider: %d\n", *feedbackdiv));
   1675 	return 0;
   1676 }
   1677 
   1678 #if 0
   1679 #ifdef RADEONFB_DEBUG
   1680 static void
   1681 dump_buffer(const char *pfx, void *buffer, unsigned int size)
   1682 {
   1683 	char		asc[17];
   1684 	unsigned	ptr = (unsigned)buffer;
   1685 	char		*start = (char *)(ptr & ~0xf);
   1686 	char		*end = (char *)(ptr + size);
   1687 
   1688 	end = (char *)(((unsigned)end + 0xf) & ~0xf);
   1689 
   1690 	if (pfx == NULL) {
   1691 		pfx = "";
   1692 	}
   1693 
   1694 	while (start < end) {
   1695 		unsigned offset = (unsigned)start & 0xf;
   1696 		if (offset == 0) {
   1697 			printf("%s%x: ", pfx, (unsigned)start);
   1698 		}
   1699 		if (((unsigned)start < ptr) ||
   1700 		    ((unsigned)start >= (ptr + size))) {
   1701 			printf("  ");
   1702 			asc[offset] = ' ';
   1703 		} else {
   1704 			printf("%02x", *(unsigned char *)start);
   1705 			if ((*start >= ' ') && (*start <= '~')) {
   1706 				asc[offset] = *start;
   1707 			} else {
   1708 				asc[offset] = '.';
   1709 			}
   1710 		}
   1711 		asc[offset + 1] = 0;
   1712 		if (offset % 2) {
   1713 			printf(" ");
   1714 		}
   1715 		if (offset == 15) {
   1716 			printf(" %s\n", asc);
   1717 		}
   1718 		start++;
   1719 	}
   1720 }
   1721 #endif
   1722 #endif
   1723 
   1724 int
   1725 radeonfb_getconnectors(struct radeonfb_softc *sc)
   1726 {
   1727 	int	i;
   1728 	int	found = 0;
   1729 
   1730 	for (i = 0; i < 2; i++) {
   1731 		sc->sc_ports[i].rp_mon_type = RADEON_MT_UNKNOWN;
   1732 		sc->sc_ports[i].rp_ddc_type = RADEON_DDC_NONE;
   1733 		sc->sc_ports[i].rp_dac_type = RADEON_DAC_UNKNOWN;
   1734 		sc->sc_ports[i].rp_conn_type = RADEON_CONN_NONE;
   1735 		sc->sc_ports[i].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1736 	}
   1737 
   1738 	/*
   1739 	 * This logic is borrowed from Xorg's radeon driver.
   1740 	 */
   1741 	if (!sc->sc_biossz)
   1742 		goto nobios;
   1743 
   1744 	if (IS_ATOM(sc)) {
   1745 		/* not done yet */
   1746 	} else {
   1747 		uint16_t	ptr;
   1748 		int		port = 0;
   1749 
   1750 		ptr = GETBIOS16(sc, 0x48);
   1751 		ptr = GETBIOS16(sc, ptr + 0x50);
   1752 		for (i = 1; i < 4; i++) {
   1753 			uint16_t	entry;
   1754 			uint8_t		conn, ddc, dac, tmds;
   1755 
   1756 			/*
   1757 			 * Parse the connector table.  From reading the code,
   1758 			 * it appears to made up of 16-bit entries for each
   1759 			 * connector.  The 16-bits are defined as:
   1760 			 *
   1761 			 * bits 12-15	- connector type (0 == end of table)
   1762 			 * bits 8-11	- DDC type
   1763 			 * bits 5-7	- ???
   1764 			 * bit 4	- TMDS type (1 = EXT, 0 = INT)
   1765 			 * bits 1-3	- ???
   1766 			 * bit 0	- DAC, 1 = TVDAC, 0 = primary
   1767 			 */
   1768 			if (!GETBIOS8(sc, ptr + i * 2) && i > 1)
   1769 				break;
   1770 			entry = GETBIOS16(sc, ptr + i * 2);
   1771 
   1772 			conn = (entry >> 12) & 0xf;
   1773 			ddc = (entry >> 8) & 0xf;
   1774 			dac = (entry & 0x1) ? RADEON_DAC_TVDAC :
   1775 			    RADEON_DAC_PRIMARY;
   1776 			tmds = ((entry >> 4) & 0x1) ? RADEON_TMDS_EXT :
   1777 			    RADEON_TMDS_INT;
   1778 
   1779 			if (conn == RADEON_CONN_NONE)
   1780 				continue;	/* no connector */
   1781 
   1782 
   1783 
   1784 			/*
   1785 			 * XXX
   1786 			 * both Mac Mini variants have both outputs wired to
   1787 			 * the same connector and share the DDC lines
   1788 			 */
   1789 			if ((found > 0) &&
   1790 			    (sc->sc_ports[port].rp_ddc_type == ddc)) {
   1791 				/* duplicate entry for same connector */
   1792 				continue;
   1793 			}
   1794 
   1795 			/* internal DDC_DVI port gets priority */
   1796 			if ((ddc == RADEON_DDC_DVI) || (port == 1))
   1797 				port = 0;
   1798 			else
   1799 				port = 1;
   1800 
   1801 			sc->sc_ports[port].rp_ddc_type =
   1802 			    ddc > RADEON_DDC_CRT2 ? RADEON_DDC_NONE : ddc;
   1803 			sc->sc_ports[port].rp_dac_type = dac;
   1804 			sc->sc_ports[port].rp_conn_type =
   1805 			    min(conn, RADEON_CONN_UNSUPPORTED) ;
   1806 
   1807 			sc->sc_ports[port].rp_tmds_type = tmds;
   1808 
   1809 			if ((conn != RADEON_CONN_DVI_I) &&
   1810 			    (conn != RADEON_CONN_DVI_D) &&
   1811 			    (tmds == RADEON_TMDS_INT))
   1812 				sc->sc_ports[port].rp_tmds_type =
   1813 				    RADEON_TMDS_UNKNOWN;
   1814 			sc->sc_ports[port].rp_number = i - 1;
   1815 
   1816 			found += (port + 1);
   1817 		}
   1818 	}
   1819 
   1820 nobios:
   1821 	if (!found) {
   1822 		bool dvi_ext = FALSE, dvi_int = FALSE;
   1823 		DPRINTF(("No connector info in BIOS!\n"));
   1824 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
   1825 		    "dvi-internal", &dvi_int);
   1826 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
   1827 		    "dvi-external", &dvi_ext);
   1828 		if (dvi_ext) {
   1829 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1830 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_CRT2;
   1831 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1832 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_I;
   1833 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_EXT;	/* output to fp2 */
   1834 			sc->sc_ports[0].rp_number = 0;
   1835 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1836 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_NONE;
   1837 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_UNKNOWN;
   1838 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_NONE;
   1839 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1840 			sc->sc_ports[1].rp_number = 1;
   1841 		} else	if (dvi_int) {
   1842 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1843 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_CRT2;
   1844 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1845 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_I;
   1846 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1847 			sc->sc_ports[0].rp_number = 0;
   1848 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1849 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_NONE;
   1850 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_UNKNOWN;
   1851 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_NONE;
   1852 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1853 			sc->sc_ports[1].rp_number = 1;
   1854 		} else if IS_MOBILITY(sc) {
   1855 			/* default, port 0 = internal TMDS, port 1 = CRT */
   1856 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1857 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1858 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1859 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1860 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1861 			sc->sc_ports[0].rp_number = 0;
   1862 
   1863 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1864 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1865 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1866 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1867 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_EXT;
   1868 			sc->sc_ports[1].rp_number = 1;
   1869 		} else {
   1870 			/* default, port 0 = DVI, port 1 = CRT */
   1871 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1872 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1873 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1874 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1875 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1876 			sc->sc_ports[0].rp_number = 1;
   1877 
   1878 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1879 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1880 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1881 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1882 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1883 			sc->sc_ports[1].rp_number = 0;
   1884 		}
   1885 	}
   1886 
   1887 	/*
   1888 	 * Fixup for RS300/RS350/RS400 chips, that lack a primary DAC.
   1889 	 * these chips should use TVDAC for the VGA port.
   1890 	 */
   1891 	if (HAS_SDAC(sc)) {
   1892 		if (sc->sc_ports[0].rp_conn_type == RADEON_CONN_CRT) {
   1893 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1894 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1895 		} else {
   1896 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_TVDAC;
   1897 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1898 		}
   1899 	} else if (!HAS_CRTC2(sc)) {
   1900 		sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1901 	}
   1902 
   1903 	for (i = 0; i < 2; i++) {
   1904 		char	edid[128];
   1905 		uint8_t	ddc;
   1906 		struct edid_info *eip = &sc->sc_ports[i].rp_edid;
   1907 		prop_data_t edid_data;
   1908 
   1909 		DPRINTF(("Port #%d:\n", i));
   1910 		DPRINTF(("   conn = %d\n", sc->sc_ports[i].rp_conn_type));
   1911 		DPRINTF(("    ddc = %d\n", sc->sc_ports[i].rp_ddc_type));
   1912 		DPRINTF(("    dac = %d\n", sc->sc_ports[i].rp_dac_type));
   1913 		DPRINTF(("   tmds = %d\n", sc->sc_ports[i].rp_tmds_type));
   1914 		DPRINTF(("   crtc = %d\n", sc->sc_ports[i].rp_number));
   1915 
   1916 		sc->sc_ports[i].rp_edid_valid = 0;
   1917 		/* first look for static EDID data */
   1918 		if ((edid_data = prop_dictionary_get(device_properties(
   1919 		    sc->sc_dev), "EDID")) != NULL) {
   1920 
   1921 			aprint_debug_dev(sc->sc_dev, "using static EDID\n");
   1922 			memcpy(edid, prop_data_data_nocopy(edid_data), 128);
   1923 			if (edid_parse(edid, eip) == 0) {
   1924 
   1925 				sc->sc_ports[i].rp_edid_valid = 1;
   1926 			}
   1927 		}
   1928 		/* if we didn't find any we'll try to talk to the monitor */
   1929 		if (sc->sc_ports[i].rp_edid_valid != 1) {
   1930 
   1931 			ddc = sc->sc_ports[i].rp_ddc_type;
   1932 			if (ddc != RADEON_DDC_NONE) {
   1933 				if ((radeonfb_i2c_read_edid(sc, ddc, edid)
   1934 				    == 0) && (edid_parse(edid, eip) == 0)) {
   1935 
   1936 					sc->sc_ports[i].rp_edid_valid = 1;
   1937 #ifdef RADEONFB_DEBUG
   1938 					edid_print(eip);
   1939 #endif
   1940 				}
   1941 			}
   1942 		}
   1943 	}
   1944 
   1945 	return found;
   1946 }
   1947 
   1948 int
   1949 radeonfb_gettmds(struct radeonfb_softc *sc)
   1950 {
   1951 	int	i;
   1952 
   1953 	if (!sc->sc_biossz) {
   1954 		goto nobios;
   1955 	}
   1956 
   1957 	if (IS_ATOM(sc)) {
   1958 		/* XXX: not done yet */
   1959 	} else {
   1960 		uint16_t	ptr;
   1961 		int		n;
   1962 
   1963 		ptr = GETBIOS16(sc, 0x48);
   1964 		ptr = GETBIOS16(sc, ptr + 0x34);
   1965 		DPRINTF(("DFP table revision %d\n", GETBIOS8(sc, ptr)));
   1966 		if (GETBIOS8(sc, ptr) == 3) {
   1967 			/* revision three table */
   1968 			n = GETBIOS8(sc, ptr + 5) + 1;
   1969 			n = min(n, 4);
   1970 
   1971 			memset(sc->sc_tmds_pll, 0, sizeof (sc->sc_tmds_pll));
   1972 			for (i = 0; i < n; i++) {
   1973 				sc->sc_tmds_pll[i].rtp_pll = GETBIOS32(sc,
   1974 				    ptr + i * 10 + 8);
   1975 				sc->sc_tmds_pll[i].rtp_freq = GETBIOS16(sc,
   1976 				    ptr + i * 10 + 0x10);
   1977 				DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1978 					    sc->sc_tmds_pll[i].rtp_freq,
   1979 					    sc->sc_tmds_pll[i].rtp_pll));
   1980 			}
   1981 			return 0;
   1982 		}
   1983 	}
   1984 
   1985 nobios:
   1986 	DPRINTF(("no suitable DFP table present\n"));
   1987 	for (i = 0;
   1988 	     i < sizeof (radeonfb_tmds_pll) / sizeof (radeonfb_tmds_pll[0]);
   1989 	     i++) {
   1990 		int	j;
   1991 
   1992 		if (radeonfb_tmds_pll[i].family != sc->sc_family)
   1993 			continue;
   1994 
   1995 		for (j = 0; j < 4; j++) {
   1996 			sc->sc_tmds_pll[j] = radeonfb_tmds_pll[i].plls[j];
   1997 			DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   1998 				    sc->sc_tmds_pll[j].rtp_freq,
   1999 				    sc->sc_tmds_pll[j].rtp_pll));
   2000 		}
   2001 		return 0;
   2002 	}
   2003 
   2004 	return -1;
   2005 }
   2006 
   2007 const struct videomode *
   2008 radeonfb_modelookup(const char *name)
   2009 {
   2010 	int	i;
   2011 
   2012 	for (i = 0; i < videomode_count; i++)
   2013 		if (!strcmp(name, videomode_list[i].name))
   2014 			return &videomode_list[i];
   2015 
   2016 	return NULL;
   2017 }
   2018 
   2019 void
   2020 radeonfb_pllwriteupdate(struct radeonfb_softc *sc, int crtc)
   2021 {
   2022 	if (crtc) {
   2023 		while (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   2024 		    RADEON_P2PLL_ATOMIC_UPDATE_R);
   2025 		SETPLL(sc, RADEON_P2PLL_REF_DIV, RADEON_P2PLL_ATOMIC_UPDATE_W);
   2026 	} else {
   2027 		while (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   2028 		    RADEON_PPLL_ATOMIC_UPDATE_R);
   2029 		SETPLL(sc, RADEON_PPLL_REF_DIV, RADEON_PPLL_ATOMIC_UPDATE_W);
   2030 	}
   2031 }
   2032 
   2033 void
   2034 radeonfb_pllwaitatomicread(struct radeonfb_softc *sc, int crtc)
   2035 {
   2036 	int	i;
   2037 
   2038 	for (i = 10000; i; i--) {
   2039 		if (crtc) {
   2040 			if (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   2041 			    RADEON_P2PLL_ATOMIC_UPDATE_R)
   2042 				break;
   2043 		} else {
   2044 			if (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   2045 			    RADEON_PPLL_ATOMIC_UPDATE_R)
   2046 				break;
   2047 		}
   2048 	}
   2049 }
   2050 
   2051 void
   2052 radeonfb_program_vclk(struct radeonfb_softc *sc, int dotclock, int crtc, int flags)
   2053 {
   2054 	uint32_t	pbit = 0;
   2055 	uint32_t	feed = 0;
   2056 	uint32_t	data, refdiv, div0, r2xxref;
   2057 
   2058 	radeonfb_calc_dividers(sc, dotclock, &pbit, &feed, flags);
   2059 
   2060 	if (crtc == 0) {
   2061 
   2062 		refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV);
   2063 
   2064 		/*
   2065 		 * XXX
   2066 		 * the RV350 in my last generation iBook G4 behaves like an
   2067 		 * r2xx here - try to detect that and not screw up the reference
   2068 		 * divider.
   2069 		 * xf86-video-radeon just skips PLL programming altogether
   2070 		 * on iBooks, probably for this reason.
   2071 		 */
   2072 		r2xxref = (refdiv & ~RADEON_PPLL_REF_DIV_MASK) | sc->sc_refdiv;
   2073 		if (IS_R300(sc) && (r2xxref != refdiv)) {
   2074 			refdiv = (refdiv & ~R300_PPLL_REF_DIV_ACC_MASK) |
   2075 			    (sc->sc_refdiv << R300_PPLL_REF_DIV_ACC_SHIFT);
   2076 		} else {
   2077 			refdiv = (refdiv & ~RADEON_PPLL_REF_DIV_MASK) |
   2078 			    sc->sc_refdiv;
   2079 		}
   2080 		DPRINTF(("refdiv %08x\n", refdiv));
   2081 		div0 = GETPLL(sc, RADEON_PPLL_DIV_0);
   2082 		DPRINTF(("div0 %08x\n", div0));
   2083 		div0 &= ~(RADEON_PPLL_FB3_DIV_MASK |
   2084 		    RADEON_PPLL_POST3_DIV_MASK);
   2085 		div0 |= pbit;
   2086 		div0 |= (feed & RADEON_PPLL_FB3_DIV_MASK);
   2087 		DPRINTF(("div0 %08x\n", div0));
   2088 
   2089 		if ((refdiv == GETPLL(sc, RADEON_PPLL_REF_DIV)) &&
   2090 		    (div0 == GETPLL(sc, RADEON_PPLL_DIV_0))) {
   2091 			/*
   2092 			 * nothing to do here, the PLL is already where we
   2093 			 * want it
   2094 			 */
   2095 			PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   2096 			    ~RADEON_PLL_DIV_SEL);
   2097 			aprint_debug_dev(sc->sc_dev, "no need to touch the PLL\n");
   2098 			return;
   2099 		}
   2100 
   2101 		/* alright, we do need to reprogram stuff */
   2102 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   2103 		    RADEON_VCLK_SRC_SEL_CPUCLK,
   2104 		    ~RADEON_VCLK_SRC_SEL_MASK);
   2105 
   2106 		/* put vclk into reset, use atomic updates */
   2107 		SETPLL(sc, RADEON_PPLL_CNTL,
   2108 		    RADEON_PPLL_REFCLK_SEL |
   2109 		    RADEON_PPLL_FBCLK_SEL |
   2110 		    RADEON_PPLL_RESET |
   2111 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   2112 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   2113 
   2114 		/* select clock 0 */
   2115 		PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   2116 		    ~RADEON_PLL_DIV_SEL);
   2117 
   2118 		PUTPLL(sc, RADEON_PPLL_REF_DIV, refdiv);
   2119 
   2120 		/* xf86-video-radeon does this, not sure why */
   2121 		PUTPLL(sc, RADEON_PPLL_DIV_0, div0);
   2122 		PUTPLL(sc, RADEON_PPLL_DIV_0, div0);
   2123 
   2124 		/* use the atomic update */
   2125 		radeonfb_pllwriteupdate(sc, crtc);
   2126 
   2127 		/* and wait for it to complete */
   2128 		radeonfb_pllwaitatomicread(sc, crtc);
   2129 
   2130 		/* program HTOTAL (why?) */
   2131 		PUTPLL(sc, RADEON_HTOTAL_CNTL, 0);
   2132 
   2133 		/* drop reset */
   2134 		CLRPLL(sc, RADEON_PPLL_CNTL,
   2135 		    RADEON_PPLL_RESET | RADEON_PPLL_SLEEP |
   2136 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   2137 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   2138 
   2139 		PRINTPLL(RADEON_PPLL_CNTL);
   2140 		PRINTPLL(RADEON_PPLL_REF_DIV);
   2141 		PRINTPLL(RADEON_PPLL_DIV_3);
   2142 
   2143 		/* give clock time to lock */
   2144 		delay(50000);
   2145 
   2146 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   2147 		    RADEON_VCLK_SRC_SEL_PPLLCLK,
   2148 		    ~RADEON_VCLK_SRC_SEL_MASK);
   2149 
   2150 	} else {
   2151 
   2152 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   2153 		    RADEON_PIX2CLK_SRC_SEL_CPUCLK,
   2154 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   2155 
   2156 		/* put vclk into reset, use atomic updates */
   2157 		SETPLL(sc, RADEON_P2PLL_CNTL,
   2158 		    RADEON_P2PLL_RESET |
   2159 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   2160 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   2161 
   2162 		/* program reference divider */
   2163 		PATCHPLL(sc, RADEON_P2PLL_REF_DIV, sc->sc_refdiv,
   2164 		    ~RADEON_P2PLL_REF_DIV_MASK);
   2165 
   2166 		/* program feedback and post dividers */
   2167 		data = GETPLL(sc, RADEON_P2PLL_DIV_0);
   2168 		data &= ~(RADEON_P2PLL_FB0_DIV_MASK |
   2169 		    RADEON_P2PLL_POST0_DIV_MASK);
   2170 		data |= pbit;
   2171 		data |= (feed & RADEON_P2PLL_FB0_DIV_MASK);
   2172 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   2173 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   2174 
   2175 		PRINTPLL(RADEON_P2PLL_REF_DIV);
   2176 		PRINTPLL(RADEON_P2PLL_DIV_0);
   2177 
   2178 		/* use the atomic update */
   2179 		radeonfb_pllwriteupdate(sc, crtc);
   2180 
   2181 		/* and wait for it to complete */
   2182 		radeonfb_pllwaitatomicread(sc, crtc);
   2183 
   2184 		/* program HTOTAL (why?) */
   2185 		PUTPLL(sc, RADEON_HTOTAL2_CNTL, 0);
   2186 
   2187 		/* drop reset */
   2188 		CLRPLL(sc, RADEON_P2PLL_CNTL,
   2189 		    RADEON_P2PLL_RESET | RADEON_P2PLL_SLEEP |
   2190 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   2191 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   2192 
   2193 		/* allow time for clock to lock */
   2194 		delay(50000);
   2195 
   2196 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   2197 		    RADEON_PIX2CLK_SRC_SEL_P2PLLCLK,
   2198 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   2199 	}
   2200 	PRINTREG(RADEON_CRTC_MORE_CNTL);
   2201 }
   2202 
   2203 void
   2204 radeonfb_modeswitch(struct radeonfb_display *dp)
   2205 {
   2206 	struct radeonfb_softc	*sc = dp->rd_softc;
   2207 	int			i;
   2208 
   2209 	/* blank the display while we switch modes */
   2210 	radeonfb_blank(dp, 1);
   2211 
   2212 #if 0
   2213 	SET32(sc, RADEON_CRTC_EXT_CNTL,
   2214 	    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2215 	    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2216 #endif
   2217 
   2218 	/* these registers might get in the way... */
   2219 	PUT32(sc, RADEON_OVR_CLR, 0);
   2220 	PUT32(sc, RADEON_OVR_WID_LEFT_RIGHT, 0);
   2221 	PUT32(sc, RADEON_OVR_WID_TOP_BOTTOM, 0);
   2222 	PUT32(sc, RADEON_OV0_SCALE_CNTL, 0);
   2223 	PUT32(sc, RADEON_SUBPIC_CNTL, 0);
   2224 	PUT32(sc, RADEON_VIPH_CONTROL, 0);
   2225 	PUT32(sc, RADEON_I2C_CNTL_1, 0);
   2226 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2227 	PUT32(sc, RADEON_CAP0_TRIG_CNTL, 0);
   2228 	PUT32(sc, RADEON_CAP1_TRIG_CNTL, 0);
   2229 	PUT32(sc, RADEON_SURFACE_CNTL, 0);
   2230 
   2231 	for (i = 0; i < dp->rd_ncrtcs; i++)
   2232 		radeonfb_setcrtc(dp, i);
   2233 
   2234 #if 0
   2235 	/*
   2236 	 * DVO chip voodoo from xf86-video-radeon
   2237 	 * apparently this is needed for some powerbooks with DVI outputs
   2238 	 */
   2239 
   2240 	uint8_t data[5][2] = {{0x8, 0x030}, {0x9, 0}, {0xa, 0x90}, {0xc, 0x89}, {0x8, 0x3b}};
   2241 	int n = 0;
   2242 	iic_acquire_bus(&sc->sc_i2c[0].ric_controller, 0);
   2243 	for (i = 0; i < 5; i++)
   2244 		n += iic_exec(&sc->sc_i2c[0].ric_controller, I2C_OP_WRITE, 0x38, data[i], 2, NULL, 0, 0);
   2245 	iic_release_bus(&sc->sc_i2c[0].ric_controller, 0);
   2246 	printf("n = %d\n", n);
   2247 #endif
   2248 
   2249 	/* activate the display */
   2250 	radeonfb_blank(dp, 0);
   2251 }
   2252 
   2253 void
   2254 radeonfb_setcrtc(struct radeonfb_display *dp, int index)
   2255 {
   2256 	int			crtc, flags = 0;
   2257 	struct videomode	*mode;
   2258 	struct radeonfb_softc	*sc;
   2259 	struct radeonfb_crtc	*cp;
   2260 	uint32_t		v;
   2261 	uint32_t		gencntl;
   2262 	uint32_t		htotaldisp;
   2263 	uint32_t		hsyncstrt;
   2264 	uint32_t		vtotaldisp;
   2265 	uint32_t		vsyncstrt;
   2266 	uint32_t		fphsyncstrt;
   2267 	uint32_t		fpvsyncstrt;
   2268 	uint32_t		fphtotaldisp;
   2269 	uint32_t		fpvtotaldisp;
   2270 	uint32_t		pitch;
   2271 
   2272 	sc = dp->rd_softc;
   2273 
   2274 	if ((sc->sc_ports[index].rp_tmds_type == RADEON_TMDS_INT) ||
   2275 	    (sc->sc_ports[index].rp_tmds_type == RADEON_TMDS_EXT)) {
   2276 		flags |= NO_ODD_FBDIV;
   2277 	}
   2278 
   2279 	cp = &dp->rd_crtcs[index];
   2280 	crtc = cp->rc_number;
   2281 	mode = &cp->rc_videomode;
   2282 
   2283 #if 1
   2284 	pitch = dp->rd_stride / dp->rd_bpp;
   2285 #else
   2286 	pitch = (((sc->sc_maxx * sc->sc_maxbpp) + ((sc->sc_maxbpp * 8) - 1)) /
   2287 	    (sc->sc_maxbpp * 8));
   2288 #endif
   2289 	switch (crtc) {
   2290 	case 0:
   2291 		gencntl = RADEON_CRTC_GEN_CNTL;
   2292 		htotaldisp = RADEON_CRTC_H_TOTAL_DISP;
   2293 		hsyncstrt = RADEON_CRTC_H_SYNC_STRT_WID;
   2294 		vtotaldisp = RADEON_CRTC_V_TOTAL_DISP;
   2295 		vsyncstrt = RADEON_CRTC_V_SYNC_STRT_WID;
   2296 		/* should probably leave those alone on non-LVDS */
   2297 		fpvsyncstrt = RADEON_FP_V_SYNC_STRT_WID;
   2298 		fphsyncstrt = RADEON_FP_H_SYNC_STRT_WID;
   2299 		fpvtotaldisp = RADEON_FP_CRTC_V_TOTAL_DISP;
   2300 		fphtotaldisp = RADEON_FP_CRTC_H_TOTAL_DISP;
   2301 		break;
   2302 	case 1:
   2303 		gencntl = RADEON_CRTC2_GEN_CNTL;
   2304 		htotaldisp = RADEON_CRTC2_H_TOTAL_DISP;
   2305 		hsyncstrt = RADEON_CRTC2_H_SYNC_STRT_WID;
   2306 		vtotaldisp = RADEON_CRTC2_V_TOTAL_DISP;
   2307 		vsyncstrt = RADEON_CRTC2_V_SYNC_STRT_WID;
   2308 		fpvsyncstrt = RADEON_FP_V2_SYNC_STRT_WID;
   2309 		fphsyncstrt = RADEON_FP_H2_SYNC_STRT_WID;
   2310 		/* XXX these registers don't seem to exist */
   2311 		fpvtotaldisp = 0;//RADEON_FP_CRTC2_V_TOTAL_DISP;
   2312 		fphtotaldisp = 0;//RADEON_FP_CRTC2_H_TOTAL_DISP;
   2313 		break;
   2314 	default:
   2315 		panic("Bad CRTC!");
   2316 		break;
   2317 	}
   2318 
   2319 	/*
   2320 	 * CRTC_GEN_CNTL - depth, accelerator mode, etc.
   2321 	 */
   2322 	/* only bother with 32bpp and 8bpp */
   2323 	v = dp->rd_format << RADEON_CRTC_PIX_WIDTH_SHIFT;
   2324 
   2325 	if (crtc == 1) {
   2326 		v |= RADEON_CRTC2_CRT2_ON | RADEON_CRTC2_EN;
   2327 	} else {
   2328 		v |= RADEON_CRTC_EXT_DISP_EN | RADEON_CRTC_EN;
   2329 	}
   2330 
   2331 	if (mode->flags & VID_DBLSCAN)
   2332 		v |= RADEON_CRTC2_DBL_SCAN_EN;
   2333 
   2334 	if (mode->flags & VID_INTERLACE)
   2335 		v |= RADEON_CRTC2_INTERLACE_EN;
   2336 
   2337 	if (mode->flags & VID_CSYNC) {
   2338 		v |= RADEON_CRTC2_CSYNC_EN;
   2339 		if (crtc == 1)
   2340 			v |= RADEON_CRTC2_VSYNC_TRISTAT;
   2341 	}
   2342 
   2343 	PUT32(sc, gencntl, v);
   2344 	DPRINTF(("CRTC%s_GEN_CNTL = %08x\n", crtc ? "2" : "", v));
   2345 
   2346 	/*
   2347 	 * CRTC_EXT_CNTL - preserve disable flags, set ATI linear and EXT_CNT
   2348 	 */
   2349 	v = GET32(sc, RADEON_CRTC_EXT_CNTL);
   2350 	if (crtc == 0) {
   2351 		v &= (RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2352 		    RADEON_CRTC_DISPLAY_DIS);
   2353 		v |= RADEON_XCRT_CNT_EN | RADEON_VGA_ATI_LINEAR;
   2354 		if (mode->flags & VID_CSYNC)
   2355 			v |= RADEON_CRTC_VSYNC_TRISTAT;
   2356 	}
   2357 	/* unconditional turn on CRT, in case first CRTC is DFP */
   2358 	v |= RADEON_CRTC_CRT_ON;
   2359 	PUT32(sc, RADEON_CRTC_EXT_CNTL, v);
   2360 	PRINTREG(RADEON_CRTC_EXT_CNTL);
   2361 
   2362 	/*
   2363 	 * H_TOTAL_DISP
   2364 	 */
   2365 	v = ((mode->hdisplay / 8) - 1) << 16;
   2366 	v |= (mode->htotal / 8) - 1;
   2367 	PUT32(sc, htotaldisp, v);
   2368 	DPRINTF(("CRTC%s_H_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2369 	if (fphtotaldisp) {
   2370 		PUT32(sc, fphtotaldisp, v);
   2371 		DPRINTF(("FP_H%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2372 	}
   2373 	/*
   2374 	 * H_SYNC_STRT_WID
   2375 	 */
   2376 	v = (((mode->hsync_end - mode->hsync_start) / 8) << 16);
   2377 	v |= (mode->hsync_start - 8);	/* match xf86-video-radeon */
   2378 	if (mode->flags & VID_NHSYNC)
   2379 		v |= RADEON_CRTC_H_SYNC_POL;
   2380 	PUT32(sc, hsyncstrt, v);
   2381 	DPRINTF(("CRTC%s_H_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2382 	if (fphsyncstrt) {
   2383 		PUT32(sc, fphsyncstrt, v);
   2384 		DPRINTF(("FP_H%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2385 	}
   2386 
   2387 	/*
   2388 	 * V_TOTAL_DISP
   2389 	 */
   2390 	v = ((mode->vdisplay - 1) << 16);
   2391 	v |= (mode->vtotal - 1);
   2392 	PUT32(sc, vtotaldisp, v);
   2393 	DPRINTF(("CRTC%s_V_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2394 	if (fpvtotaldisp) {
   2395 		PUT32(sc, fpvtotaldisp, v);
   2396 		DPRINTF(("FP_V%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2397 	}
   2398 
   2399 	/*
   2400 	 * V_SYNC_STRT_WID
   2401 	 */
   2402 	v = ((mode->vsync_end - mode->vsync_start) << 16);
   2403 	v |= (mode->vsync_start - 1);
   2404 	if (mode->flags & VID_NVSYNC)
   2405 		v |= RADEON_CRTC_V_SYNC_POL;
   2406 	PUT32(sc, vsyncstrt, v);
   2407 	DPRINTF(("CRTC%s_V_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2408 	if (fpvsyncstrt) {
   2409 		PUT32(sc, fpvsyncstrt, v);
   2410 		DPRINTF(("FP_V%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2411 	}
   2412 
   2413 	radeonfb_program_vclk(sc, mode->dot_clock, crtc, flags);
   2414 
   2415 	switch (crtc) {
   2416 	case 0:
   2417 		PUT32(sc, RADEON_CRTC_OFFSET, 0);
   2418 		PUT32(sc, RADEON_CRTC_OFFSET_CNTL, 0);
   2419 		PUT32(sc, RADEON_CRTC_PITCH, pitch);
   2420 		CLR32(sc, RADEON_DISP_MERGE_CNTL, RADEON_DISP_RGB_OFFSET_EN);
   2421 
   2422 		CLR32(sc, RADEON_CRTC_EXT_CNTL,
   2423 		    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2424 		    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2425 		CLR32(sc, RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B);
   2426 		PRINTREG(RADEON_CRTC_EXT_CNTL);
   2427 		PRINTREG(RADEON_CRTC_GEN_CNTL);
   2428 		PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   2429 		break;
   2430 
   2431 	case 1:
   2432 		PUT32(sc, RADEON_CRTC2_OFFSET, 0);
   2433 		PUT32(sc, RADEON_CRTC2_OFFSET_CNTL, 0);
   2434 		PUT32(sc, RADEON_CRTC2_PITCH, pitch);
   2435 		CLR32(sc, RADEON_DISP2_MERGE_CNTL, RADEON_DISP2_RGB_OFFSET_EN);
   2436 		CLR32(sc, RADEON_CRTC2_GEN_CNTL,
   2437 		    RADEON_CRTC2_VSYNC_DIS |
   2438 		    RADEON_CRTC2_HSYNC_DIS |
   2439 		    RADEON_CRTC2_DISP_DIS | RADEON_CRTC2_DISP_REQ_EN_B);
   2440 		PRINTREG(RADEON_CRTC2_GEN_CNTL);
   2441 		break;
   2442 	}
   2443 }
   2444 
   2445 int
   2446 radeonfb_isblank(struct radeonfb_display *dp)
   2447 {
   2448 	uint32_t	reg, mask;
   2449 
   2450 	if(!dp->rd_softc->sc_mapped)
   2451 		return 1;
   2452 
   2453 	if (dp->rd_crtcs[0].rc_number) {
   2454 		reg = RADEON_CRTC2_GEN_CNTL;
   2455 		mask = RADEON_CRTC2_DISP_DIS;
   2456 	} else {
   2457 		reg = RADEON_CRTC_EXT_CNTL;
   2458 		mask = RADEON_CRTC_DISPLAY_DIS;
   2459 	}
   2460 	return ((GET32(dp->rd_softc, reg) & mask) ? 1 : 0);
   2461 }
   2462 
   2463 void
   2464 radeonfb_blank(struct radeonfb_display *dp, int blank)
   2465 {
   2466 	struct radeonfb_softc	*sc = dp->rd_softc;
   2467 	uint32_t		reg, mask;
   2468 	uint32_t		fpreg, fpval;
   2469 	int			i;
   2470 
   2471 	if (!sc->sc_mapped)
   2472 		return;
   2473 
   2474 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   2475 
   2476 		if (dp->rd_crtcs[i].rc_number) {
   2477 			reg = RADEON_CRTC2_GEN_CNTL;
   2478 			mask = RADEON_CRTC2_DISP_DIS;
   2479 			fpreg = RADEON_FP2_GEN_CNTL;
   2480 			fpval = RADEON_FP2_ON;
   2481 		} else {
   2482 			reg = RADEON_CRTC_EXT_CNTL;
   2483 			mask = RADEON_CRTC_DISPLAY_DIS;
   2484 			fpreg = RADEON_FP_GEN_CNTL;
   2485 			fpval = RADEON_FP_FPON;
   2486 		}
   2487 
   2488 		if (blank) {
   2489 			SET32(sc, reg, mask);
   2490 			CLR32(sc, fpreg, fpval);
   2491 		} else {
   2492 			CLR32(sc, reg, mask);
   2493 			SET32(sc, fpreg, fpval);
   2494 		}
   2495 	}
   2496 	PRINTREG(RADEON_FP_GEN_CNTL);
   2497 	PRINTREG(RADEON_FP2_GEN_CNTL);
   2498 }
   2499 
   2500 void
   2501 radeonfb_init_screen(void *cookie, struct vcons_screen *scr, int existing,
   2502     long *defattr)
   2503 {
   2504 	struct radeonfb_display *dp = cookie;
   2505 	struct rasops_info *ri = &scr->scr_ri;
   2506 
   2507 	/* initialize font subsystem */
   2508 	wsfont_init();
   2509 
   2510 	scr->scr_flags |= VCONS_LOADFONT;
   2511 
   2512 	DPRINTF(("init screen called, existing %d\n", existing));
   2513 
   2514 	ri->ri_depth = dp->rd_bpp;
   2515 	ri->ri_width = dp->rd_virtx;
   2516 	ri->ri_height = dp->rd_virty;
   2517 	ri->ri_stride = dp->rd_stride;
   2518 	ri->ri_flg = RI_CENTER;
   2519 	switch (ri->ri_depth) {
   2520 		case 8:
   2521 			ri->ri_flg |= RI_ENABLE_ALPHA | RI_8BIT_IS_RGB | RI_PREFER_ALPHA;
   2522 			break;
   2523 		case 32:
   2524 			ri->ri_flg |= RI_ENABLE_ALPHA | RI_PREFER_ALPHA;
   2525 			/* we run radeons in RGB even on SPARC hardware */
   2526 			ri->ri_rnum = 8;
   2527 			ri->ri_gnum = 8;
   2528 			ri->ri_bnum = 8;
   2529 			ri->ri_rpos = 16;
   2530 			ri->ri_gpos = 8;
   2531 			ri->ri_bpos = 0;
   2532 			break;
   2533 	}
   2534 
   2535 	ri->ri_bits = (void *)dp->rd_fbptr;
   2536 
   2537 #ifdef VCONS_DRAW_INTR
   2538 	scr->scr_flags |= VCONS_DONT_READ;
   2539 #endif
   2540 
   2541 	if (existing) {
   2542 		ri->ri_flg |= RI_CLEAR;
   2543 
   2544 		/* start a modeswitch now */
   2545 		radeonfb_modeswitch(dp);
   2546 	}
   2547 
   2548 	/*
   2549 	 * XXX: font selection should be based on properties, with some
   2550 	 * normal/reasonable default.
   2551 	 */
   2552 
   2553 	/* initialize and look for an initial font */
   2554 	rasops_init(ri, 0, 0);
   2555 	ri->ri_caps = WSSCREEN_UNDERLINE | WSSCREEN_HILIT |
   2556 		    WSSCREEN_WSCOLORS | WSSCREEN_REVERSE | WSSCREEN_RESIZE;
   2557 
   2558 	rasops_reconfig(ri, dp->rd_virty / ri->ri_font->fontheight,
   2559 		    dp->rd_virtx / ri->ri_font->fontwidth);
   2560 
   2561 	/* enable acceleration */
   2562 	dp->rd_putchar = ri->ri_ops.putchar;
   2563 	ri->ri_ops.copyrows = radeonfb_copyrows;
   2564 	ri->ri_ops.copycols = radeonfb_copycols;
   2565 	ri->ri_ops.eraserows = radeonfb_eraserows;
   2566 	ri->ri_ops.erasecols = radeonfb_erasecols;
   2567 	/* pick a putchar method based on font and Radeon model */
   2568 	if (ri->ri_font->stride < ri->ri_font->fontwidth) {
   2569 		/* got a bitmap font */
   2570 #ifndef RADEONFB_ALWAYS_ACCEL_PUTCHAR
   2571 		if (IS_R300(dp->rd_softc)) {
   2572 			/*
   2573 			 * radeonfb_putchar() doesn't work right on some R3xx
   2574 			 * so we use software drawing here, the wrapper just
   2575 			 *  makes sure the engine is idle before scribbling
   2576 			 * into vram
   2577 			 */
   2578 			ri->ri_ops.putchar = radeonfb_putchar_wrapper;
   2579 		} else
   2580 #endif
   2581 			ri->ri_ops.putchar = radeonfb_putchar;
   2582 	} else {
   2583 		/* got an alpha font */
   2584 		switch(ri->ri_depth) {
   2585 			case 32:
   2586 				ri->ri_ops.putchar = radeonfb_putchar_aa32;
   2587 				break;
   2588 			case 8:
   2589 				ri->ri_ops.putchar = radeonfb_putchar_aa8;
   2590 				break;
   2591 			default:
   2592 				/* XXX this should never happen */
   2593 				panic("%s: depth is not 8 or 32 but we got an" \
   2594 					 " alpha font?!", __func__);
   2595 		}
   2596 	}
   2597 	ri->ri_ops.cursor = radeonfb_cursor;
   2598 }
   2599 
   2600 void
   2601 radeonfb_set_fbloc(struct radeonfb_softc *sc)
   2602 {
   2603 	uint32_t	gen, ext, gen2 = 0;
   2604 	uint32_t	agploc, aperbase, apersize, mcfbloc;
   2605 
   2606 	gen = GET32(sc, RADEON_CRTC_GEN_CNTL);
   2607 	/* XXX */
   2608 	ext = GET32(sc, RADEON_CRTC_EXT_CNTL) & ~RADEON_CRTC_DISPLAY_DIS;
   2609 	agploc = GET32(sc, RADEON_MC_AGP_LOCATION);
   2610 	aperbase = GET32(sc, RADEON_CONFIG_APER_0_BASE);
   2611 	apersize = GET32(sc, RADEON_CONFIG_APER_SIZE);
   2612 
   2613 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISP_REQ_EN_B);
   2614 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISPLAY_DIS);
   2615 #if 0
   2616 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISPLAY_DIS);
   2617 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISP_REQ_EN_B);
   2618 #endif
   2619 
   2620 	if (HAS_CRTC2(sc)) {
   2621 		gen2 = GET32(sc, RADEON_CRTC2_GEN_CNTL);
   2622 		PUT32(sc, RADEON_CRTC2_GEN_CNTL,
   2623 		    gen2 | RADEON_CRTC2_DISP_REQ_EN_B);
   2624 	}
   2625 
   2626 	delay(100000);
   2627 
   2628 	mcfbloc = (aperbase >> 16) |
   2629 	    ((aperbase + (apersize - 1)) & 0xffff0000);
   2630 
   2631 	sc->sc_aperbase = (mcfbloc & 0xffff) << 16;
   2632 	sc->sc_memsz = apersize;
   2633 
   2634 	if (((agploc & 0xffff) << 16) !=
   2635 	    ((mcfbloc & 0xffff0000U) + 0x10000)) {
   2636 		agploc = mcfbloc & 0xffff0000U;
   2637 		agploc |= ((agploc + 0x10000) >> 16);
   2638 	}
   2639 
   2640 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2641 
   2642 	PUT32(sc, RADEON_MC_FB_LOCATION, mcfbloc);
   2643 	PUT32(sc, RADEON_MC_AGP_LOCATION, agploc);
   2644 
   2645 	DPRINTF(("aperbase = %u\n", aperbase));
   2646 	PRINTREG(RADEON_MC_FB_LOCATION);
   2647 	PRINTREG(RADEON_MC_AGP_LOCATION);
   2648 
   2649 	PUT32(sc, RADEON_DISPLAY_BASE_ADDR, sc->sc_aperbase);
   2650 
   2651 	if (HAS_CRTC2(sc))
   2652 		PUT32(sc, RADEON_DISPLAY2_BASE_ADDR, sc->sc_aperbase);
   2653 
   2654 	PUT32(sc, RADEON_OV0_BASE_ADDR, sc->sc_aperbase);
   2655 
   2656 #if 0
   2657 	/* XXX: what is this AGP garbage? :-) */
   2658 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2659 #endif
   2660 
   2661 	delay(100000);
   2662 
   2663 	PUT32(sc, RADEON_CRTC_GEN_CNTL, gen);
   2664 	PUT32(sc, RADEON_CRTC_EXT_CNTL, ext);
   2665 
   2666 	if (HAS_CRTC2(sc))
   2667 		PUT32(sc, RADEON_CRTC2_GEN_CNTL, gen2);
   2668 }
   2669 
   2670 void
   2671 radeonfb_init_misc(struct radeonfb_softc *sc)
   2672 {
   2673 	PUT32(sc, RADEON_BUS_CNTL,
   2674 	    RADEON_BUS_MASTER_DIS |
   2675 	    RADEON_BUS_PREFETCH_MODE_ACT |
   2676 	    RADEON_BUS_PCI_READ_RETRY_EN |
   2677 	    RADEON_BUS_PCI_WRT_RETRY_EN |
   2678 	    (3 << RADEON_BUS_RETRY_WS_SHIFT) |
   2679 	    RADEON_BUS_MSTR_RD_MULT |
   2680 	    RADEON_BUS_MSTR_RD_LINE |
   2681 	    RADEON_BUS_RD_DISCARD_EN |
   2682 	    RADEON_BUS_MSTR_DISCONNECT_EN |
   2683 	    RADEON_BUS_READ_BURST);
   2684 
   2685 	PUT32(sc, RADEON_BUS_CNTL1, 0xf0);
   2686 	/* PUT32(sc, RADEON_SEPROM_CNTL1, 0x09ff0000); */
   2687 	PUT32(sc, RADEON_FCP_CNTL, RADEON_FCP0_SRC_GND);
   2688 	PUT32(sc, RADEON_RBBM_CNTL,
   2689 	    (3 << RADEON_RB_SETTLE_SHIFT) |
   2690 	    (4 << RADEON_ABORTCLKS_HI_SHIFT) |
   2691 	    (4 << RADEON_ABORTCLKS_CP_SHIFT) |
   2692 	    (4 << RADEON_ABORTCLKS_CFIFO_SHIFT));
   2693 
   2694 	/* XXX: figure out what these mean! */
   2695 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2696 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2697 #if 0
   2698 	PUT32(sc, RADEON_DISP_MISC_CNTL, 0x5bb00400);
   2699 #endif
   2700 
   2701 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2702 	PUT32(sc, RADEON_GEN_INT_STATUS, GET32(sc, RADEON_GEN_INT_STATUS));
   2703 }
   2704 
   2705 static void
   2706 radeonfb_putpal(struct radeonfb_display *dp, int idx, int r, int g, int b)
   2707 {
   2708 	struct radeonfb_softc *sc = dp->rd_softc;
   2709 	int		crtc, cc;
   2710 	uint32_t	vclk;
   2711 
   2712 	vclk = GETPLL(sc, RADEON_VCLK_ECP_CNTL);
   2713 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk & ~RADEON_PIXCLK_DAC_ALWAYS_ONb);
   2714 
   2715 	/* initialize the palette for every CRTC used by this display */
   2716 	for (cc = 0; cc < dp->rd_ncrtcs; cc++) {
   2717 		crtc = dp->rd_crtcs[cc].rc_number;
   2718 
   2719 		if (crtc)
   2720 			SET32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2721 		else
   2722 			CLR32(sc, RADEON_DAC_CNTL2, RADEON_DAC2_PALETTE_ACC_CTL);
   2723 
   2724 		PUT32(sc, RADEON_PALETTE_INDEX, idx);
   2725             	PUT32(sc, RADEON_PALETTE_30_DATA,
   2726             	    (r << 22) | (g << 12) | (b << 2));
   2727 	}
   2728 
   2729 	PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk);
   2730 }
   2731 
   2732 /*
   2733  * This loads a linear color map for true color.
   2734  */
   2735 void
   2736 radeonfb_init_palette(struct radeonfb_display *dp)
   2737 {
   2738 	int		i;
   2739 
   2740 #define	DAC_WIDTH ((1 << 10) - 1)
   2741 #define	CLUT_WIDTH ((1 << 8) - 1)
   2742 #define	CLUT_COLOR(i)      ((i * DAC_WIDTH * 2 / CLUT_WIDTH + 1) / 2)
   2743 
   2744 	if (dp->rd_bpp == 8) {
   2745 
   2746 		/* R3G3B2 palette */
   2747 		uint32_t tmp, r, g, b;
   2748 
   2749 	        for (i = 0; i <= CLUT_WIDTH; ++i) {
   2750 			tmp = i & 0xe0;
   2751 
   2752 			/*
   2753 			 * replicate bits so 0xe0 maps to a red value of 0xff
   2754 			 * in order to make white look actually white
   2755 			 */
   2756 			tmp |= (tmp >> 3) | (tmp >> 6);
   2757 			r = tmp;
   2758 
   2759 			tmp = (i & 0x1c) << 3;
   2760 			tmp |= (tmp >> 3) | (tmp >> 6);
   2761 			g = tmp;
   2762 
   2763 			tmp = (i & 0x03) << 6;
   2764 			tmp |= tmp >> 2;
   2765 			tmp |= tmp >> 4;
   2766 			b = tmp;
   2767 
   2768 			radeonfb_putpal(dp, i, r, g, b);
   2769 		}
   2770 	} else {
   2771 		/* linear ramp */
   2772 		for (i = 0; i <= CLUT_WIDTH; ++i) {
   2773 			radeonfb_putpal(dp, i, i, i, i);
   2774 		}
   2775 	}
   2776 }
   2777 
   2778 static int
   2779 radeonfb_putcmap(struct radeonfb_display *dp, struct wsdisplay_cmap *cm)
   2780 {
   2781 	u_char *r, *g, *b;
   2782 	u_int index = cm->index;
   2783 	u_int count = cm->count;
   2784 	int i, error;
   2785 	u_char rbuf[256], gbuf[256], bbuf[256];
   2786 
   2787 #ifdef GENFB_DEBUG
   2788 	aprint_debug("putcmap: %d %d\n",index, count);
   2789 #endif
   2790 	if (index >= 256 || count > 256 - index)
   2791 		return EINVAL;
   2792 	error = copyin(cm->red, &rbuf[index], count);
   2793 	if (error)
   2794 		return error;
   2795 	error = copyin(cm->green, &gbuf[index], count);
   2796 	if (error)
   2797 		return error;
   2798 	error = copyin(cm->blue, &bbuf[index], count);
   2799 	if (error)
   2800 		return error;
   2801 
   2802 	memcpy(&dp->rd_cmap_red[index], &rbuf[index], count);
   2803 	memcpy(&dp->rd_cmap_green[index], &gbuf[index], count);
   2804 	memcpy(&dp->rd_cmap_blue[index], &bbuf[index], count);
   2805 
   2806 	r = &dp->rd_cmap_red[index];
   2807 	g = &dp->rd_cmap_green[index];
   2808 	b = &dp->rd_cmap_blue[index];
   2809 
   2810 	for (i = 0; i < count; i++) {
   2811 		radeonfb_putpal(dp, index, *r, *g, *b);
   2812 		index++;
   2813 		r++, g++, b++;
   2814 	}
   2815 	return 0;
   2816 }
   2817 
   2818 static int
   2819 radeonfb_getcmap(struct radeonfb_display *dp, struct wsdisplay_cmap *cm)
   2820 {
   2821 	u_int index = cm->index;
   2822 	u_int count = cm->count;
   2823 	int error;
   2824 
   2825 	if (index >= 256 || count > 256 - index)
   2826 		return EINVAL;
   2827 
   2828 	error = copyout(&dp->rd_cmap_red[index],   cm->red,   count);
   2829 	if (error)
   2830 		return error;
   2831 	error = copyout(&dp->rd_cmap_green[index], cm->green, count);
   2832 	if (error)
   2833 		return error;
   2834 	error = copyout(&dp->rd_cmap_blue[index],  cm->blue,  count);
   2835 	if (error)
   2836 		return error;
   2837 
   2838 	return 0;
   2839 }
   2840 
   2841 /*
   2842  * Bugs in some R300 hardware requires this when accessing CLOCK_CNTL_INDEX.
   2843  */
   2844 void
   2845 radeonfb_r300cg_workaround(struct radeonfb_softc *sc)
   2846 {
   2847 	uint32_t	tmp, save;
   2848 
   2849 	save = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   2850 	tmp = save & ~(0x3f | RADEON_PLL_WR_EN);
   2851 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, tmp);
   2852 	tmp = GET32(sc, RADEON_CLOCK_CNTL_DATA);
   2853 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, save);
   2854 }
   2855 
   2856 /*
   2857  * Acceleration entry points.
   2858  */
   2859 
   2860 /* this one draws characters using bitmap fonts */
   2861 static void
   2862 radeonfb_putchar(void *cookie, int row, int col, u_int c, long attr)
   2863 {
   2864 	struct rasops_info	*ri = cookie;
   2865 	struct vcons_screen	*scr = ri->ri_hw;
   2866 	struct radeonfb_display	*dp = scr->scr_cookie;
   2867 	struct radeonfb_softc	*sc = dp->rd_softc;
   2868 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2869 	uint32_t		w, h;
   2870 	int			xd, yd, offset, i;
   2871 	uint32_t		bg, fg, gmc;
   2872 	uint32_t		reg;
   2873 	uint8_t			*data8;
   2874 	uint16_t		*data16;
   2875 	void			*data;
   2876 
   2877 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2878 		return;
   2879 
   2880 	if (!CHAR_IN_FONT(c, font))
   2881 		return;
   2882 
   2883 	w = font->fontwidth;
   2884 	h = font->fontheight;
   2885 
   2886 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2887 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2888 
   2889 	xd = ri->ri_xorigin + col * w;
   2890 	yd = ri->ri_yorigin + row * h;
   2891 
   2892 	if (c == 0x20) {
   2893 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   2894 		return;
   2895 	}
   2896 	data = WSFONT_GLYPH(c, font);
   2897 
   2898 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   2899 
   2900 	radeonfb_wait_fifo(sc, 9);
   2901 
   2902 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   2903 	    RADEON_GMC_BRUSH_NONE |
   2904 	    RADEON_GMC_SRC_DATATYPE_MONO_FG_BG |
   2905 	    RADEON_GMC_DST_CLIPPING |
   2906 	    RADEON_ROP3_S |
   2907 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   2908 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   2909 	    RADEON_GMC_WR_MSK_DIS |
   2910 	    gmc);
   2911 
   2912 	PUT32(sc, RADEON_SC_LEFT, xd);
   2913 	PUT32(sc, RADEON_SC_RIGHT, xd + w);
   2914 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, fg);
   2915 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, bg);
   2916 	PUT32(sc, RADEON_DP_CNTL,
   2917 	    RADEON_DST_X_LEFT_TO_RIGHT |
   2918 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   2919 
   2920 	PUT32(sc, RADEON_SRC_X_Y, 0);
   2921 	offset = 32 - (font->stride << 3);
   2922 	PUT32(sc, RADEON_DST_X_Y, ((xd - offset) << 16) | yd);
   2923 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (32 << 16) | h);
   2924 
   2925 	radeonfb_wait_fifo(sc, h);
   2926 	switch (font->stride) {
   2927 		case 1: {
   2928 			data8 = data;
   2929 			for (i = 0; i < h; i++) {
   2930 				reg = *data8;
   2931 #if BYTE_ORDER == LITTLE_ENDIAN
   2932 				reg = reg << 24;
   2933 #endif
   2934 				bus_space_write_stream_4(sc->sc_regt,
   2935 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   2936 				data8++;
   2937 			}
   2938 			break;
   2939 		}
   2940 		case 2: {
   2941 			data16 = data;
   2942 			for (i = 0; i < h; i++) {
   2943 				reg = *data16;
   2944 #if BYTE_ORDER == LITTLE_ENDIAN
   2945 				reg = reg << 16;
   2946 #endif
   2947 				bus_space_write_stream_4(sc->sc_regt,
   2948 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   2949 				data16++;
   2950 			}
   2951 			break;
   2952 		}
   2953 	}
   2954 	if (attr & 1)
   2955 		radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   2956 }
   2957 
   2958 /* ... while this one is for anti-aliased ones */
   2959 static void
   2960 radeonfb_putchar_aa32(void *cookie, int row, int col, u_int c, long attr)
   2961 {
   2962 	struct rasops_info	*ri = cookie;
   2963 	struct vcons_screen	*scr = ri->ri_hw;
   2964 	struct radeonfb_display	*dp = scr->scr_cookie;
   2965 	struct radeonfb_softc	*sc = dp->rd_softc;
   2966 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   2967 	uint32_t		bg, fg, gmc;
   2968 	uint8_t			*data;
   2969 	int			w, h, xd, yd;
   2970 	int 			i, r, g, b, aval;
   2971 	int 			rf, gf, bf, rb, gb, bb;
   2972 	uint32_t 		pixel;
   2973 	int rv;
   2974 
   2975 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   2976 		return;
   2977 
   2978 	if (!CHAR_IN_FONT(c, font))
   2979 		return;
   2980 
   2981 	w = font->fontwidth;
   2982 	h = font->fontheight;
   2983 
   2984 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   2985 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   2986 
   2987 	xd = ri->ri_xorigin + col * w;
   2988 	yd = ri->ri_yorigin + row * h;
   2989 
   2990 	if (c == 0x20) {
   2991 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   2992 		if (attr & 1)
   2993 			radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   2994 		return;
   2995 	}
   2996 	rv = glyphcache_try(&dp->rd_gc, c, xd, yd, attr);
   2997 	if (rv == GC_OK)
   2998 		return;
   2999 
   3000 	data = WSFONT_GLYPH(c, font);
   3001 
   3002 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3003 
   3004 	radeonfb_wait_fifo(sc, 5);
   3005 
   3006 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3007 	    RADEON_GMC_BRUSH_NONE |
   3008 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3009 	    RADEON_ROP3_S |
   3010 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   3011 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3012 	    RADEON_GMC_WR_MSK_DIS |
   3013 	    gmc);
   3014 
   3015 	PUT32(sc, RADEON_DP_CNTL,
   3016 	    RADEON_DST_X_LEFT_TO_RIGHT |
   3017 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   3018 
   3019 	PUT32(sc, RADEON_SRC_X_Y, 0);
   3020 	PUT32(sc, RADEON_DST_X_Y, (xd << 16) | yd);
   3021 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (w << 16) | h);
   3022 
   3023 	rf = (fg >> 16) & 0xff;
   3024 	rb = (bg >> 16) & 0xff;
   3025 	gf = (fg >> 8) & 0xff;
   3026 	gb = (bg >> 8) & 0xff;
   3027 	bf =  fg & 0xff;
   3028 	bb =  bg & 0xff;
   3029 
   3030 	/*
   3031 	 * I doubt we can upload data faster than even the slowest Radeon
   3032 	 * could process them, especially when doing the alpha blending stuff
   3033 	 * along the way, so just make sure there's some room in the FIFO and
   3034 	 * then hammer away
   3035 	 * As it turns out we can, so make periodic stops to let the FIFO
   3036 	 * drain.
   3037 	 */
   3038 	radeonfb_wait_fifo(sc, 20);
   3039 	for (i = 0; i < ri->ri_fontscale; i++) {
   3040 		aval = *data;
   3041 		data++;
   3042 		if (aval == 0) {
   3043 			pixel = bg;
   3044 		} else if (aval == 255) {
   3045 			pixel = fg;
   3046 		} else {
   3047 			r = aval * rf + (255 - aval) * rb;
   3048 			g = aval * gf + (255 - aval) * gb;
   3049 			b = aval * bf + (255 - aval) * bb;
   3050 			pixel = (r & 0xff00) << 8 |
   3051 			        (g & 0xff00) |
   3052 			        (b & 0xff00) >> 8;
   3053 		}
   3054 		if (i & 16)
   3055 			radeonfb_wait_fifo(sc, 20);
   3056 		PUT32(sc, RADEON_HOST_DATA0, pixel);
   3057 	}
   3058 	if (rv == GC_ADD) {
   3059 		glyphcache_add(&dp->rd_gc, c, xd, yd);
   3060 	} else if (attr & 1)
   3061 		radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   3062 }
   3063 
   3064 static void
   3065 radeonfb_putchar_aa8(void *cookie, int row, int col, u_int c, long attr)
   3066 {
   3067 	struct rasops_info	*ri = cookie;
   3068 	struct vcons_screen	*scr = ri->ri_hw;
   3069 	struct radeonfb_display	*dp = scr->scr_cookie;
   3070 	struct radeonfb_softc	*sc = dp->rd_softc;
   3071 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   3072 	uint32_t bg, fg, latch = 0, bg8, fg8, pixel, gmc;
   3073 	int i, x, y, wi, he, r, g, b, aval;
   3074 	int r1, g1, b1, r0, g0, b0, fgo, bgo;
   3075 	uint8_t *data8;
   3076 	int rv, cnt;
   3077 
   3078 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   3079 		return;
   3080 
   3081 	if (!CHAR_IN_FONT(c, font))
   3082 		return;
   3083 
   3084 	wi = font->fontwidth;
   3085 	he = font->fontheight;
   3086 
   3087 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   3088 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   3089 
   3090 	x = ri->ri_xorigin + col * wi;
   3091 	y = ri->ri_yorigin + row * he;
   3092 
   3093 	if (c == 0x20) {
   3094 		radeonfb_rectfill(dp, x, y, wi, he, bg);
   3095 		if (attr & 1)
   3096 			radeonfb_rectfill(dp, x, y + he - 2, wi, 1, fg);
   3097 		return;
   3098 	}
   3099 	rv = glyphcache_try(&dp->rd_gc, c, x, y, attr);
   3100 	if (rv == GC_OK)
   3101 		return;
   3102 
   3103 	data8 = WSFONT_GLYPH(c, font);
   3104 
   3105 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3106 
   3107 	radeonfb_wait_fifo(sc, 5);
   3108 
   3109 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3110 	    RADEON_GMC_BRUSH_NONE |
   3111 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3112 	    RADEON_ROP3_S |
   3113 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   3114 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3115 	    RADEON_GMC_WR_MSK_DIS |
   3116 	    gmc);
   3117 
   3118 	PUT32(sc, RADEON_DP_CNTL,
   3119 	    RADEON_DST_X_LEFT_TO_RIGHT |
   3120 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   3121 
   3122 	PUT32(sc, RADEON_SRC_X_Y, 0);
   3123 	PUT32(sc, RADEON_DST_X_Y, (x << 16) | y);
   3124 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (wi << 16) | he);
   3125 
   3126 	/*
   3127 	 * we need the RGB colours here, so get offsets into rasops_cmap
   3128 	 */
   3129 	fgo = ((attr >> 24) & 0xf) * 3;
   3130 	bgo = ((attr >> 16) & 0xf) * 3;
   3131 
   3132 	r0 = rasops_cmap[bgo];
   3133 	r1 = rasops_cmap[fgo];
   3134 	g0 = rasops_cmap[bgo + 1];
   3135 	g1 = rasops_cmap[fgo + 1];
   3136 	b0 = rasops_cmap[bgo + 2];
   3137 	b1 = rasops_cmap[fgo + 2];
   3138 #define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6))
   3139 	bg8 = R3G3B2(r0, g0, b0);
   3140 	fg8 = R3G3B2(r1, g1, b1);
   3141 
   3142 	radeonfb_wait_fifo(sc, 20);
   3143 	cnt = 0;
   3144 	for (i = 0; i < ri->ri_fontscale; i++) {
   3145 		aval = *data8;
   3146 		if (aval == 0) {
   3147 			pixel = bg8;
   3148 		} else if (aval == 255) {
   3149 			pixel = fg8;
   3150 		} else {
   3151 			r = aval * r1 + (255 - aval) * r0;
   3152 			g = aval * g1 + (255 - aval) * g0;
   3153 			b = aval * b1 + (255 - aval) * b0;
   3154 			pixel = ((r & 0xe000) >> 8) |
   3155 				((g & 0xe000) >> 11) |
   3156 				((b & 0xc000) >> 14);
   3157 		}
   3158 		latch |= pixel << (8 * (i & 3));
   3159 		/* write in 32bit chunks */
   3160 		if ((i & 3) == 3) {
   3161 			PUT32(sc, RADEON_HOST_DATA0, latch);
   3162 			/*
   3163 			 * not strictly necessary, old data should be shifted
   3164 			 * out
   3165 			 */
   3166 			latch = 0;
   3167 			cnt++;
   3168 			if (cnt > 16) {
   3169 				cnt = 0;
   3170 				radeonfb_wait_fifo(sc, 20);
   3171 			}
   3172 		}
   3173 		data8++;
   3174 	}
   3175 	/* if we have pixels left in latch write them out */
   3176 	if ((i & 3) != 0) {
   3177 		/*
   3178 		 * radeon is weird - apparently leftover pixels are written
   3179 		 * from the middle, not from the left as everything else
   3180 		 */
   3181 		PUT32(sc, RADEON_HOST_DATA0, latch);
   3182 	}
   3183 
   3184 	if (rv == GC_ADD) {
   3185 		glyphcache_add(&dp->rd_gc, c, x, y);
   3186 	} else
   3187 		if (attr & 1)
   3188 			radeonfb_rectfill(dp, x, y + he - 2, wi, 1, fg);
   3189 }
   3190 
   3191 /*
   3192  * wrapper for software character drawing
   3193  * just sync the engine and call rasops*_putchar()
   3194  */
   3195 
   3196 #ifndef RADEONFB_ALWAYS_ACCEL_PUTCHAR
   3197 static void
   3198 radeonfb_putchar_wrapper(void *cookie, int row, int col, u_int c, long attr)
   3199 {
   3200 	struct rasops_info	*ri = cookie;
   3201 	struct vcons_screen	*scr = ri->ri_hw;
   3202 	struct radeonfb_display	*dp = scr->scr_cookie;
   3203 
   3204 	radeonfb_engine_idle(dp->rd_softc);
   3205 	dp->rd_putchar(ri, row, col, c, attr);
   3206 }
   3207 #endif
   3208 
   3209 static void
   3210 radeonfb_eraserows(void *cookie, int row, int nrows, long fillattr)
   3211 {
   3212 	struct rasops_info	*ri = cookie;
   3213 	struct vcons_screen	*scr = ri->ri_hw;
   3214 	struct radeonfb_display	*dp = scr->scr_cookie;
   3215 	uint32_t		x, y, w, h, fg, bg, ul;
   3216 
   3217 	/* XXX: check for full emulation mode? */
   3218 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3219 		x = ri->ri_xorigin;
   3220 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3221 		w = ri->ri_emuwidth;
   3222 		h = ri->ri_font->fontheight * nrows;
   3223 
   3224 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   3225 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   3226 	}
   3227 }
   3228 
   3229 static void
   3230 radeonfb_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
   3231 {
   3232 	struct rasops_info	*ri = cookie;
   3233 	struct vcons_screen	*scr = ri->ri_hw;
   3234 	struct radeonfb_display	*dp = scr->scr_cookie;
   3235 	uint32_t		x, ys, yd, w, h;
   3236 
   3237 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3238 		x = ri->ri_xorigin;
   3239 		ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow;
   3240 		yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow;
   3241 		w = ri->ri_emuwidth;
   3242 		h = ri->ri_font->fontheight * nrows;
   3243 		radeonfb_bitblt(dp, x, ys, x, yd, w, h,
   3244 		    RADEON_ROP3_S);
   3245 	}
   3246 }
   3247 
   3248 static void
   3249 radeonfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
   3250 {
   3251 	struct rasops_info	*ri = cookie;
   3252 	struct vcons_screen	*scr = ri->ri_hw;
   3253 	struct radeonfb_display	*dp = scr->scr_cookie;
   3254 	uint32_t		xs, xd, y, w, h;
   3255 
   3256 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3257 		xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol;
   3258 		xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol;
   3259 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3260 		w = ri->ri_font->fontwidth * ncols;
   3261 		h = ri->ri_font->fontheight;
   3262 		radeonfb_bitblt(dp, xs, y, xd, y, w, h,
   3263 		    RADEON_ROP3_S);
   3264 	}
   3265 }
   3266 
   3267 static void
   3268 radeonfb_erasecols(void *cookie, int row, int startcol, int ncols,
   3269     long fillattr)
   3270 {
   3271 	struct rasops_info	*ri = cookie;
   3272 	struct vcons_screen	*scr = ri->ri_hw;
   3273 	struct radeonfb_display	*dp = scr->scr_cookie;
   3274 	uint32_t		x, y, w, h, fg, bg, ul;
   3275 
   3276 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3277 		x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol;
   3278 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3279 		w = ri->ri_font->fontwidth * ncols;
   3280 		h = ri->ri_font->fontheight;
   3281 
   3282 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   3283 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   3284 	}
   3285 }
   3286 
   3287 static void
   3288 radeonfb_cursor(void *cookie, int on, int row, int col)
   3289 {
   3290 	struct rasops_info *ri = cookie;
   3291 	struct vcons_screen *scr = ri->ri_hw;
   3292 	struct radeonfb_display	*dp = scr->scr_cookie;
   3293 	int x, y, wi, he;
   3294 
   3295 	wi = ri->ri_font->fontwidth;
   3296 	he = ri->ri_font->fontheight;
   3297 
   3298 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3299 		x = ri->ri_ccol * wi + ri->ri_xorigin;
   3300 		y = ri->ri_crow * he + ri->ri_yorigin;
   3301 		/* first turn off the old cursor */
   3302 		if (ri->ri_flg & RI_CURSOR) {
   3303 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   3304 			    RADEON_ROP3_Dn);
   3305 			ri->ri_flg &= ~RI_CURSOR;
   3306 		}
   3307 		ri->ri_crow = row;
   3308 		ri->ri_ccol = col;
   3309 		/* then (possibly) turn on the new one */
   3310 		if (on) {
   3311 			x = ri->ri_ccol * wi + ri->ri_xorigin;
   3312 			y = ri->ri_crow * he + ri->ri_yorigin;
   3313 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   3314 			    RADEON_ROP3_Dn);
   3315 			ri->ri_flg |= RI_CURSOR;
   3316 		}
   3317 	} else {
   3318 		scr->scr_ri.ri_crow = row;
   3319 		scr->scr_ri.ri_ccol = col;
   3320 		scr->scr_ri.ri_flg &= ~RI_CURSOR;
   3321 	}
   3322 }
   3323 
   3324 /*
   3325  * Underlying acceleration support.
   3326  */
   3327 
   3328 static void
   3329 radeonfb_rectfill(struct radeonfb_display *dp, int dstx, int dsty,
   3330     int width, int height, uint32_t color)
   3331 {
   3332 	struct radeonfb_softc	*sc = dp->rd_softc;
   3333 	uint32_t		gmc;
   3334 
   3335 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3336 
   3337 	radeonfb_wait_fifo(sc, 6);
   3338 
   3339 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3340 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3341 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3342 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3343 	    RADEON_ROP3_P | gmc);
   3344 
   3345 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, color);
   3346 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3347 	PUT32(sc, RADEON_DP_CNTL,
   3348 	    RADEON_DST_X_LEFT_TO_RIGHT |
   3349 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   3350 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   3351 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   3352 }
   3353 
   3354 static void
   3355 radeonfb_rectfill_a(void *cookie, int dstx, int dsty,
   3356     int width, int height, long attr)
   3357 {
   3358 	struct radeonfb_display *dp = cookie;
   3359 
   3360 	radeonfb_rectfill(dp, dstx, dsty, width, height,
   3361 	    dp->rd_vscreen.scr_ri.ri_devcmap[(attr >> 24 & 0xf)]);
   3362 }
   3363 
   3364 static void
   3365 radeonfb_bitblt(void *cookie, int srcx, int srcy,
   3366     int dstx, int dsty, int width, int height, int rop)
   3367 {
   3368 	struct radeonfb_display *dp = cookie;
   3369 	struct radeonfb_softc	*sc = dp->rd_softc;
   3370 	uint32_t		gmc;
   3371 	uint32_t		dir;
   3372 
   3373 	if (dsty < srcy) {
   3374 		dir = RADEON_DST_Y_TOP_TO_BOTTOM;
   3375 	} else {
   3376 		srcy += height - 1;
   3377 		dsty += height - 1;
   3378 		dir = 0;
   3379 	}
   3380 	if (dstx < srcx) {
   3381 		dir |= RADEON_DST_X_LEFT_TO_RIGHT;
   3382 	} else {
   3383 		srcx += width - 1;
   3384 		dstx += width - 1;
   3385 	}
   3386 
   3387 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3388 
   3389 	radeonfb_wait_fifo(sc, 6);
   3390 
   3391 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3392 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3393 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3394 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3395 	    RADEON_DP_SRC_SOURCE_MEMORY |
   3396 	    rop | gmc);
   3397 
   3398 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3399 	PUT32(sc, RADEON_DP_CNTL, dir);
   3400 	PUT32(sc, RADEON_SRC_Y_X, (srcy << 16) | srcx);
   3401 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   3402 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   3403 }
   3404 
   3405 static void
   3406 radeonfb_engine_idle(struct radeonfb_softc *sc)
   3407 {
   3408 
   3409 	radeonfb_wait_fifo(sc, 64);
   3410 	while ((GET32(sc, RADEON_RBBM_STATUS) &
   3411 			RADEON_RBBM_ACTIVE) != 0);
   3412 	radeonfb_engine_flush(sc);
   3413 }
   3414 
   3415 static inline void
   3416 radeonfb_wait_fifo(struct radeonfb_softc *sc, int n)
   3417 {
   3418 	int	i;
   3419 
   3420 	for (i = RADEON_TIMEOUT; i; i--) {
   3421 		if ((GET32(sc, RADEON_RBBM_STATUS) &
   3422 			RADEON_RBBM_FIFOCNT_MASK) >= n)
   3423 			return;
   3424 	}
   3425 #ifdef	DIAGNOSTIC
   3426 	if (!i)
   3427 		printf("%s: timed out waiting for fifo (%x)\n",
   3428 		    XNAME(sc), GET32(sc, RADEON_RBBM_STATUS));
   3429 #endif
   3430 }
   3431 
   3432 static void
   3433 radeonfb_engine_flush(struct radeonfb_softc *sc)
   3434 {
   3435 	int	i = 0;
   3436 
   3437 	if (IS_R300(sc)) {
   3438 		SET32(sc, R300_DSTCACHE_CTLSTAT, R300_RB2D_DC_FLUSH_ALL);
   3439 		while (GET32(sc, R300_DSTCACHE_CTLSTAT) & R300_RB2D_DC_BUSY) {
   3440 			i++;
   3441 		}
   3442 	} else {
   3443 		SET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT,
   3444 		    RADEON_RB2D_DC_FLUSH_ALL);
   3445 		while (GET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT) &
   3446 			RADEON_RB2D_DC_BUSY) {
   3447 			i++;
   3448 		}
   3449 	}
   3450 #ifdef DIAGNOSTIC
   3451 	if (i > RADEON_TIMEOUT)
   3452 		printf("%s: engine flush timed out!\n", XNAME(sc));
   3453 #endif
   3454 }
   3455 
   3456 static inline void
   3457 radeonfb_unclip(struct radeonfb_softc *sc)
   3458 {
   3459 
   3460 	radeonfb_wait_fifo(sc, 2);
   3461 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   3462 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   3463 }
   3464 
   3465 static void
   3466 radeonfb_engine_init(struct radeonfb_display *dp)
   3467 {
   3468 	struct radeonfb_softc	*sc = dp->rd_softc;
   3469 	uint32_t		pitch;
   3470 
   3471 	/* no 3D */
   3472 	PUT32(sc, RADEON_RB3D_CNTL, 0);
   3473 
   3474 	radeonfb_engine_reset(sc);
   3475 	pitch = ((dp->rd_virtx * (dp->rd_bpp / 8) + 0x3f)) >> 6;
   3476 
   3477 	radeonfb_wait_fifo(sc, 1);
   3478 	if (!IS_R300(sc))
   3479 		PUT32(sc, RADEON_RB2D_DSTCACHE_MODE, 0);
   3480 
   3481 	radeonfb_wait_fifo(sc, 3);
   3482 	PUT32(sc, RADEON_DEFAULT_PITCH_OFFSET,
   3483 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   3484 
   3485 
   3486 	PUT32(sc, RADEON_DST_PITCH_OFFSET,
   3487 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   3488 	PUT32(sc, RADEON_SRC_PITCH_OFFSET,
   3489 	    (pitch << 22) | (sc->sc_aperbase >> 10));
   3490 
   3491 	(void)GET32(sc, RADEON_DP_DATATYPE);
   3492 
   3493 	/* default scissors -- no clipping */
   3494 	radeonfb_wait_fifo(sc, 1);
   3495 	PUT32(sc, RADEON_DEFAULT_SC_BOTTOM_RIGHT,
   3496 	    RADEON_DEFAULT_SC_RIGHT_MAX | RADEON_DEFAULT_SC_BOTTOM_MAX);
   3497 
   3498 	radeonfb_wait_fifo(sc, 1);
   3499 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3500 	    (dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT) |
   3501 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3502 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3503 	    RADEON_GMC_SRC_DATATYPE_COLOR);
   3504 
   3505 	radeonfb_wait_fifo(sc, 10);
   3506 	PUT32(sc, RADEON_DST_LINE_START, 0);
   3507 	PUT32(sc, RADEON_DST_LINE_END, 0);
   3508 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, 0xffffffff);
   3509 	PUT32(sc, RADEON_DP_BRUSH_BKGD_CLR, 0);
   3510 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, 0xffffffff);
   3511 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, 0);
   3512 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3513 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   3514 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   3515 	PUT32(sc, RADEON_AUX_SC_CNTL, 0);
   3516 	radeonfb_engine_idle(sc);
   3517 }
   3518 
   3519 static void
   3520 radeonfb_engine_reset(struct radeonfb_softc *sc)
   3521 {
   3522 	uint32_t	hpc, rbbm, mclkcntl, clkindex;
   3523 
   3524 	radeonfb_engine_flush(sc);
   3525 
   3526 	clkindex = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   3527 	if (HAS_R300CG(sc))
   3528 		radeonfb_r300cg_workaround(sc);
   3529 	mclkcntl = GETPLL(sc, RADEON_MCLK_CNTL);
   3530 
   3531 	/*
   3532 	 * According to comments in XFree code, resetting the HDP via
   3533 	 * the RBBM_SOFT_RESET can cause bad behavior on some systems.
   3534 	 * So we use HOST_PATH_CNTL instead.
   3535 	 */
   3536 
   3537 	hpc = GET32(sc, RADEON_HOST_PATH_CNTL);
   3538 	rbbm = GET32(sc, RADEON_RBBM_SOFT_RESET);
   3539 	if (IS_R300(sc)) {
   3540 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   3541 		    RADEON_SOFT_RESET_CP |
   3542 		    RADEON_SOFT_RESET_HI |
   3543 		    RADEON_SOFT_RESET_E2);
   3544 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3545 		PUT32(sc, RADEON_RBBM_SOFT_RESET, 0);
   3546 		/*
   3547 		 * XXX: this bit is not defined in any ATI docs I have,
   3548 		 * nor in the XFree code, but XFree does it.  Why?
   3549 		 */
   3550 		SET32(sc, RADEON_RB2D_DSTCACHE_MODE, (1<<17));
   3551 	} else {
   3552 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   3553 		    RADEON_SOFT_RESET_CP |
   3554 		    RADEON_SOFT_RESET_SE |
   3555 		    RADEON_SOFT_RESET_RE |
   3556 		    RADEON_SOFT_RESET_PP |
   3557 		    RADEON_SOFT_RESET_E2 |
   3558 		    RADEON_SOFT_RESET_RB);
   3559 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3560 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm &
   3561 		    ~(RADEON_SOFT_RESET_CP |
   3562 			RADEON_SOFT_RESET_SE |
   3563 			RADEON_SOFT_RESET_RE |
   3564 			RADEON_SOFT_RESET_PP |
   3565 			RADEON_SOFT_RESET_E2 |
   3566 			RADEON_SOFT_RESET_RB));
   3567 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3568 	}
   3569 
   3570 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc | RADEON_HDP_SOFT_RESET);
   3571 	GET32(sc, RADEON_HOST_PATH_CNTL);
   3572 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc);
   3573 
   3574 	if (IS_R300(sc))
   3575 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm);
   3576 
   3577 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, clkindex);
   3578 	PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   3579 	PUTPLL(sc, RADEON_MCLK_CNTL, mclkcntl);
   3580 
   3581 	if (HAS_R300CG(sc))
   3582 		radeonfb_r300cg_workaround(sc);
   3583 }
   3584 
   3585 static int
   3586 radeonfb_set_curpos(struct radeonfb_display *dp, struct wsdisplay_curpos *pos)
   3587 {
   3588 	int		x, y;
   3589 
   3590 	x = pos->x;
   3591 	y = pos->y;
   3592 
   3593 	/*
   3594 	 * This doesn't let a cursor move off the screen.  I'm not
   3595 	 * sure if this will have negative effects for e.g. Xinerama.
   3596 	 * I'd guess Xinerama handles it by changing the cursor shape,
   3597 	 * but that needs verification.
   3598 	 */
   3599 	if (x >= dp->rd_virtx)
   3600 		x = dp->rd_virtx - 1;
   3601 	if (x < 0)
   3602 		x = 0;
   3603 	if (y >= dp->rd_virty)
   3604 		y = dp->rd_virty - 1;
   3605 	if (y < 0)
   3606 		y = 0;
   3607 
   3608 	dp->rd_cursor.rc_pos.x = x;
   3609 	dp->rd_cursor.rc_pos.y = y;
   3610 
   3611 	radeonfb_cursor_position(dp);
   3612 	return 0;
   3613 }
   3614 
   3615 static int
   3616 radeonfb_set_cursor(struct radeonfb_display *dp, struct wsdisplay_cursor *wc)
   3617 {
   3618 	unsigned	flags;
   3619 
   3620 	uint8_t		r[2], g[2], b[2];
   3621 	unsigned	index, count;
   3622 	int		i, err;
   3623 	int		pitch, size;
   3624 	struct radeonfb_cursor	nc;
   3625 
   3626 	flags = wc->which;
   3627 
   3628 	/* copy old values */
   3629 	nc = dp->rd_cursor;
   3630 
   3631 	if (flags & WSDISPLAY_CURSOR_DOCMAP) {
   3632 		index = wc->cmap.index;
   3633 		count = wc->cmap.count;
   3634 
   3635 		if (index >= 2 || count > 2 - index)
   3636 			return EINVAL;
   3637 
   3638 		err = copyin(wc->cmap.red, &r[index], count);
   3639 		if (err)
   3640 			return err;
   3641 		err = copyin(wc->cmap.green, &g[index], count);
   3642 		if (err)
   3643 			return err;
   3644 		err = copyin(wc->cmap.blue, &b[index], count);
   3645 		if (err)
   3646 			return err;
   3647 
   3648 		for (i = index; i < index + count; i++) {
   3649 			nc.rc_cmap[i] =
   3650 			    (r[i] << 16) + (g[i] << 8) + (b[i] << 0);
   3651 		}
   3652 	}
   3653 
   3654 	if (flags & WSDISPLAY_CURSOR_DOSHAPE) {
   3655 		if ((wc->size.x > RADEON_CURSORMAXX) ||
   3656 		    (wc->size.y > RADEON_CURSORMAXY))
   3657 			return EINVAL;
   3658 
   3659 		/* figure bytes per line */
   3660 		pitch = (wc->size.x + 7) / 8;
   3661 		size = pitch * wc->size.y;
   3662 
   3663 		/* clear the old cursor and mask */
   3664 		memset(nc.rc_image, 0, 512);
   3665 		memset(nc.rc_mask, 0, 512);
   3666 
   3667 		nc.rc_size = wc->size;
   3668 
   3669 		if ((err = copyin(wc->image, nc.rc_image, size)) != 0)
   3670 			return err;
   3671 
   3672 		if ((err = copyin(wc->mask, nc.rc_mask, size)) != 0)
   3673 			return err;
   3674 	}
   3675 
   3676 	if (flags & WSDISPLAY_CURSOR_DOHOT) {
   3677 		nc.rc_hot = wc->hot;
   3678 		if (nc.rc_hot.x >= nc.rc_size.x)
   3679 			nc.rc_hot.x = nc.rc_size.x - 1;
   3680 		if (nc.rc_hot.y >= nc.rc_size.y)
   3681 			nc.rc_hot.y = nc.rc_size.y - 1;
   3682 	}
   3683 
   3684 	if (flags & WSDISPLAY_CURSOR_DOPOS) {
   3685 		nc.rc_pos = wc->pos;
   3686 		if (nc.rc_pos.x >= dp->rd_virtx)
   3687 			nc.rc_pos.x = dp->rd_virtx - 1;
   3688 #if 0
   3689 		if (nc.rc_pos.x < 0)
   3690 			nc.rc_pos.x = 0;
   3691 #endif
   3692 		if (nc.rc_pos.y >= dp->rd_virty)
   3693 			nc.rc_pos.y = dp->rd_virty - 1;
   3694 #if 0
   3695 		if (nc.rc_pos.y < 0)
   3696 			nc.rc_pos.y = 0;
   3697 #endif
   3698 	}
   3699 	if (flags & WSDISPLAY_CURSOR_DOCUR) {
   3700 		nc.rc_visible = wc->enable;
   3701 	}
   3702 
   3703 	dp->rd_cursor = nc;
   3704 	radeonfb_cursor_update(dp, wc->which);
   3705 
   3706 	return 0;
   3707 }
   3708 
   3709 static uint8_t
   3710 radeonfb_backwards(uint8_t d)
   3711 {
   3712 	uint8_t l;
   3713 
   3714 	l = d << 7;
   3715 	l |= ((d & 0x02) << 5);
   3716 	l |= ((d & 0x04) << 3);
   3717 	l |= ((d & 0x08) << 1);
   3718 	l |= ((d & 0x10) >> 1);
   3719 	l |= ((d & 0x20) >> 3);
   3720 	l |= ((d & 0x40) >> 5);
   3721 	l |= ((d & 0x80) >> 7);
   3722 	return l;
   3723 }
   3724 
   3725 /*
   3726  * Change the cursor shape.  Call this with the cursor locked to avoid
   3727  * flickering/tearing.
   3728  */
   3729 static void
   3730 radeonfb_cursor_shape(struct radeonfb_display *dp)
   3731 {
   3732 	uint8_t	and[512], xor[512];
   3733 	int	i, j, src, dst /* , pitch */;
   3734 	const uint8_t	*msk = dp->rd_cursor.rc_mask;
   3735 	const uint8_t	*img = dp->rd_cursor.rc_image;
   3736 
   3737 	/*
   3738 	 * Radeon cursor data interleaves one line of AND data followed
   3739 	 * by a line of XOR data.  (Each line corresponds to a whole hardware
   3740 	 * pitch - i.e. 64 pixels or 8 bytes.)
   3741 	 *
   3742 	 * The cursor is displayed using the following table:
   3743 	 *
   3744 	 * AND	XOR	Result
   3745 	 * ----------------------
   3746 	 *  0    0	Cursor color 0
   3747 	 *  0	 1	Cursor color 1
   3748 	 *  1	 0	Transparent
   3749 	 *  1	 1	Complement of background
   3750 	 *
   3751 	 * Our masks are therefore different from what we were passed.
   3752 	 * Passed in, I'm assuming the data represents either color 0 or 1,
   3753 	 * and a mask, so the passed in table looks like:
   3754 	 *
   3755 	 * IMG	Mask	Result
   3756 	 * -----------------------
   3757 	 *  0	 0	Transparent
   3758 	 *  0	 1	Cursor color 0
   3759 	 *  1	 0	Transparent
   3760 	 *  1	 1	Cursor color 1
   3761 	 *
   3762 	 * IF mask bit == 1, AND = 0, XOR = color.
   3763 	 * IF mask bit == 0, AND = 1, XOR = 0.
   3764 	 *
   3765 	 * hence:	AND = ~(mask);	XOR = color & ~(mask);
   3766 	 */
   3767 
   3768 	/* pitch = ((dp->rd_cursor.rc_size.x + 7) / 8); */
   3769 
   3770 	/* start by assuming all bits are transparent */
   3771 	memset(and, 0xff, 512);
   3772 	memset(xor, 0x00, 512);
   3773 
   3774 	src = 0;
   3775 	dst = 0;
   3776 	for (i = 0; i < 64; i++) {
   3777 		for (j = 0; j < 64; j += 8) {
   3778 			if ((i < dp->rd_cursor.rc_size.y) &&
   3779 			    (j < dp->rd_cursor.rc_size.x)) {
   3780 
   3781 				/* take care to leave odd bits alone */
   3782 				and[dst] &= ~(msk[src]);
   3783 				xor[dst] = img[src] & msk[src];
   3784 				src++;
   3785 			}
   3786 			dst++;
   3787 		}
   3788 	}
   3789 
   3790 	for (i = 0; i < 512; i++) {
   3791 		and[i] = radeonfb_backwards(and[i]);
   3792 		xor[i] = radeonfb_backwards(xor[i]);
   3793 	}
   3794 
   3795 	/* copy the image into place */
   3796 	for (i = 0; i < 64; i++) {
   3797 		memcpy((uint8_t *)dp->rd_curptr + (i * 16),
   3798 		    &and[i * 8], 8);
   3799 		memcpy((uint8_t *)dp->rd_curptr + (i * 16) + 8,
   3800 		    &xor[i * 8], 8);
   3801 	}
   3802 }
   3803 
   3804 static void
   3805 radeonfb_cursor_position(struct radeonfb_display *dp)
   3806 {
   3807 	struct radeonfb_softc	*sc = dp->rd_softc;
   3808 	uint32_t		offset, hvoff, hvpos;	/* registers */
   3809 	uint32_t		coff;			/* cursor offset */
   3810 	int			i, x, y, xoff, yoff, crtcoff;
   3811 
   3812 	/*
   3813 	 * XXX: this also needs to handle pan/scan
   3814 	 */
   3815 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3816 
   3817 		struct radeonfb_crtc	*rcp = &dp->rd_crtcs[i];
   3818 
   3819 		if (rcp->rc_number) {
   3820 			offset = RADEON_CUR2_OFFSET;
   3821 			hvoff = RADEON_CUR2_HORZ_VERT_OFF;
   3822 			hvpos = RADEON_CUR2_HORZ_VERT_POSN;
   3823 			crtcoff = RADEON_CRTC2_OFFSET;
   3824 		} else {
   3825 			offset = RADEON_CUR_OFFSET;
   3826 			hvoff = RADEON_CUR_HORZ_VERT_OFF;
   3827 			hvpos = RADEON_CUR_HORZ_VERT_POSN;
   3828 			crtcoff = RADEON_CRTC_OFFSET;
   3829 		}
   3830 
   3831 		x = dp->rd_cursor.rc_pos.x;
   3832 		y = dp->rd_cursor.rc_pos.y;
   3833 
   3834 		while (y < rcp->rc_yoffset) {
   3835 			rcp->rc_yoffset -= RADEON_PANINCREMENT;
   3836 		}
   3837 		while (y >= (rcp->rc_yoffset + rcp->rc_videomode.vdisplay)) {
   3838 			rcp->rc_yoffset += RADEON_PANINCREMENT;
   3839 		}
   3840 		while (x < rcp->rc_xoffset) {
   3841 			rcp->rc_xoffset -= RADEON_PANINCREMENT;
   3842 		}
   3843 		while (x >= (rcp->rc_xoffset + rcp->rc_videomode.hdisplay)) {
   3844 			rcp->rc_xoffset += RADEON_PANINCREMENT;
   3845 		}
   3846 
   3847 		/* adjust for the cursor's hotspot */
   3848 		x -= dp->rd_cursor.rc_hot.x;
   3849 		y -= dp->rd_cursor.rc_hot.y;
   3850 		xoff = yoff = 0;
   3851 
   3852 		if (x >= dp->rd_virtx)
   3853 			x = dp->rd_virtx - 1;
   3854 		if (y >= dp->rd_virty)
   3855 			y = dp->rd_virty - 1;
   3856 
   3857 		/* now adjust cursor so it is relative to viewport */
   3858 		x -= rcp->rc_xoffset;
   3859 		y -= rcp->rc_yoffset;
   3860 
   3861 		/*
   3862 		 * no need to check for fall off, because we should
   3863 		 * never move off the screen entirely!
   3864 		 */
   3865 		coff = 0;
   3866 		if (x < 0) {
   3867 			xoff = -x;
   3868 			x = 0;
   3869 		}
   3870 		if (y < 0) {
   3871 			yoff = -y;
   3872 			y = 0;
   3873 			coff = (yoff * 2) * 8;
   3874 		}
   3875 
   3876 		/* pan the display */
   3877 		PUT32(sc, crtcoff, (rcp->rc_yoffset * dp->rd_stride) +
   3878 		    rcp->rc_xoffset);
   3879 
   3880 		PUT32(sc, offset, (dp->rd_curoff + coff) | RADEON_CUR_LOCK);
   3881 		PUT32(sc, hvoff, (xoff << 16) | (yoff) | RADEON_CUR_LOCK);
   3882 		/* NB: this unlocks the cursor */
   3883 		PUT32(sc, hvpos, (x << 16) | y);
   3884 	}
   3885 }
   3886 
   3887 static void
   3888 radeonfb_cursor_visible(struct radeonfb_display *dp)
   3889 {
   3890 	int		i;
   3891 	uint32_t	gencntl, bit;
   3892 
   3893 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3894 		if (dp->rd_crtcs[i].rc_number) {
   3895 			gencntl = RADEON_CRTC2_GEN_CNTL;
   3896 			bit = RADEON_CRTC2_CUR_EN;
   3897 		} else {
   3898 			gencntl = RADEON_CRTC_GEN_CNTL;
   3899 			bit = RADEON_CRTC_CUR_EN;
   3900 		}
   3901 
   3902 		if (dp->rd_cursor.rc_visible)
   3903 			SET32(dp->rd_softc, gencntl, bit);
   3904 		else
   3905 			CLR32(dp->rd_softc, gencntl, bit);
   3906 	}
   3907 }
   3908 
   3909 static void
   3910 radeonfb_cursor_cmap(struct radeonfb_display *dp)
   3911 {
   3912 	int		i;
   3913 	uint32_t	c0reg, c1reg;
   3914 	struct radeonfb_softc	*sc = dp->rd_softc;
   3915 
   3916 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3917 		if (dp->rd_crtcs[i].rc_number) {
   3918 			c0reg = RADEON_CUR2_CLR0;
   3919 			c1reg = RADEON_CUR2_CLR1;
   3920 		} else {
   3921 			c0reg = RADEON_CUR_CLR0;
   3922 			c1reg = RADEON_CUR_CLR1;
   3923 		}
   3924 
   3925 		PUT32(sc, c0reg, dp->rd_cursor.rc_cmap[0]);
   3926 		PUT32(sc, c1reg, dp->rd_cursor.rc_cmap[1]);
   3927 	}
   3928 }
   3929 
   3930 static void
   3931 radeonfb_cursor_update(struct radeonfb_display *dp, unsigned which)
   3932 {
   3933 	struct radeonfb_softc	*sc;
   3934 	int		i;
   3935 
   3936 	sc = dp->rd_softc;
   3937 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   3938 		if (dp->rd_crtcs[i].rc_number) {
   3939 			SET32(sc, RADEON_CUR2_OFFSET, RADEON_CUR_LOCK);
   3940 		} else {
   3941 			SET32(sc, RADEON_CUR_OFFSET,RADEON_CUR_LOCK);
   3942 		}
   3943 	}
   3944 
   3945 	if (which & WSDISPLAY_CURSOR_DOCMAP)
   3946 		radeonfb_cursor_cmap(dp);
   3947 
   3948 	if (which & WSDISPLAY_CURSOR_DOSHAPE)
   3949 		radeonfb_cursor_shape(dp);
   3950 
   3951 	if (which & WSDISPLAY_CURSOR_DOCUR)
   3952 		radeonfb_cursor_visible(dp);
   3953 
   3954 	/* this one is unconditional, because it updates other stuff */
   3955 	radeonfb_cursor_position(dp);
   3956 }
   3957 
   3958 static struct videomode *
   3959 radeonfb_best_refresh(struct videomode *m1, struct videomode *m2)
   3960 {
   3961 	int	r1, r2;
   3962 
   3963 	/* otherwise pick the higher refresh rate */
   3964 	r1 = DIVIDE(DIVIDE(m1->dot_clock, m1->htotal), m1->vtotal);
   3965 	r2 = DIVIDE(DIVIDE(m2->dot_clock, m2->htotal), m2->vtotal);
   3966 
   3967 	return (r1 < r2 ? m2 : m1);
   3968 }
   3969 
   3970 static const struct videomode *
   3971 radeonfb_port_mode(struct radeonfb_softc *sc, struct radeonfb_port *rp,
   3972     int x, int y)
   3973 {
   3974 	struct edid_info	*ep = &rp->rp_edid;
   3975 	struct videomode	*vmp = NULL;
   3976 	int			i;
   3977 
   3978 	if (!rp->rp_edid_valid) {
   3979 		/* fallback to safe mode */
   3980 		return radeonfb_modelookup(sc->sc_defaultmode);
   3981 	}
   3982 
   3983 	/* always choose the preferred mode first! */
   3984 	if (ep->edid_preferred_mode) {
   3985 
   3986 		/* XXX: add auto-stretching support for native mode */
   3987 
   3988 		/* this may want panning to occur, btw */
   3989 		if ((ep->edid_preferred_mode->hdisplay <= x) &&
   3990 		    (ep->edid_preferred_mode->vdisplay <= y))
   3991 			return ep->edid_preferred_mode;
   3992 	}
   3993 
   3994 	for (i = 0; i < ep->edid_nmodes; i++) {
   3995 		/*
   3996 		 * We elect to pick a resolution that is too large for
   3997 		 * the monitor than one that is too small.  This means
   3998 		 * that we will prefer to pan rather than to try to
   3999 		 * center a smaller display on a larger screen.  In
   4000 		 * practice, this shouldn't matter because if a
   4001 		 * monitor can support a larger resolution, it can
   4002 		 * probably also support the smaller.  A specific
   4003 		 * exception is fixed format panels, but hopefully
   4004 		 * they are properly dealt with by the "autostretch"
   4005 		 * logic above.
   4006 		 */
   4007 		if ((ep->edid_modes[i].hdisplay > x) ||
   4008 		    (ep->edid_modes[i].vdisplay > y)) {
   4009 			continue;
   4010 		}
   4011 
   4012 		/*
   4013 		 * at this point, the display mode is no larger than
   4014 		 * what we've requested.
   4015 		 */
   4016 		if (vmp == NULL)
   4017 			vmp = &ep->edid_modes[i];
   4018 
   4019 		/* eliminate smaller modes */
   4020 		if ((vmp->hdisplay >= ep->edid_modes[i].hdisplay) ||
   4021 		    (vmp->vdisplay >= ep->edid_modes[i].vdisplay))
   4022 			continue;
   4023 
   4024 		if ((vmp->hdisplay < ep->edid_modes[i].hdisplay) ||
   4025 		    (vmp->vdisplay < ep->edid_modes[i].vdisplay)) {
   4026 			vmp = &ep->edid_modes[i];
   4027 			continue;
   4028 		}
   4029 
   4030 		KASSERT(vmp->hdisplay == ep->edid_modes[i].hdisplay);
   4031 		KASSERT(vmp->vdisplay == ep->edid_modes[i].vdisplay);
   4032 
   4033 		vmp = radeonfb_best_refresh(vmp, &ep->edid_modes[i]);
   4034 	}
   4035 
   4036 	return (vmp ? vmp : radeonfb_modelookup(sc->sc_defaultmode));
   4037 }
   4038 
   4039 static int
   4040 radeonfb_hasres(struct videomode *list, int nlist, int x, int y)
   4041 {
   4042 	int	i;
   4043 
   4044 	for (i = 0; i < nlist; i++) {
   4045 		if ((x == list[i].hdisplay) &&
   4046 		    (y == list[i].vdisplay)) {
   4047 			return 1;
   4048 		}
   4049 	}
   4050 	return 0;
   4051 }
   4052 
   4053 static void
   4054 radeonfb_pickres(struct radeonfb_display *dp, uint16_t *x, uint16_t *y,
   4055     int pan)
   4056 {
   4057 	struct radeonfb_port	*rp;
   4058 	struct edid_info	*ep;
   4059 	int			i, j;
   4060 
   4061 	*x = 0;
   4062 	*y = 0;
   4063 
   4064 	if (pan) {
   4065 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   4066 			rp = dp->rd_crtcs[i].rc_port;
   4067 			ep = &rp->rp_edid;
   4068 			if (!rp->rp_edid_valid) {
   4069 				/* monitor not present */
   4070 				continue;
   4071 			}
   4072 
   4073 			/*
   4074 			 * For now we are ignoring "conflict" that
   4075 			 * could occur when mixing some modes like
   4076 			 * 1280x1024 and 1400x800.  It isn't clear
   4077 			 * which is better, so the first one wins.
   4078 			 */
   4079 			for (j = 0; j < ep->edid_nmodes; j++) {
   4080 				/*
   4081 				 * ignore resolutions that are too big for
   4082 				 * the radeon
   4083 				 */
   4084 				if (ep->edid_modes[j].hdisplay >
   4085 				    dp->rd_softc->sc_maxx)
   4086 					continue;
   4087 				if (ep->edid_modes[j].vdisplay >
   4088 				    dp->rd_softc->sc_maxy)
   4089 					continue;
   4090 
   4091 				/*
   4092 				 * pick largest resolution, the
   4093 				 * smaller monitor will pan
   4094 				 */
   4095 				if ((ep->edid_modes[j].hdisplay >= *x) &&
   4096 				    (ep->edid_modes[j].vdisplay >= *y)) {
   4097 					*x = ep->edid_modes[j].hdisplay;
   4098 					*y = ep->edid_modes[j].vdisplay;
   4099 				}
   4100 			}
   4101 		}
   4102 
   4103 	} else {
   4104 		struct videomode	modes[64];
   4105 		int			nmodes = 0;
   4106 		int			valid = 0;
   4107 
   4108 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   4109 			/*
   4110 			 * pick the largest resolution in common.
   4111 			 */
   4112 			rp = dp->rd_crtcs[i].rc_port;
   4113 			ep = &rp->rp_edid;
   4114 
   4115 			if (!rp->rp_edid_valid)
   4116 				continue;
   4117 
   4118 			if (!valid) {
   4119 				/*
   4120 				 * Pick the preferred mode for this port
   4121 				 * if available.
   4122 				 */
   4123 				if (ep->edid_preferred_mode) {
   4124 					struct videomode *vmp =
   4125 						ep->edid_preferred_mode;
   4126 
   4127 					if ((vmp->hdisplay <=
   4128 					     dp->rd_softc->sc_maxx) &&
   4129 					    (vmp->vdisplay <=
   4130 					     dp->rd_softc->sc_maxy))
   4131 						modes[nmodes++] = *vmp;
   4132 				} else {
   4133 
   4134 					/* initialize starting list */
   4135 					for (j = 0; j < ep->edid_nmodes; j++) {
   4136 						/*
   4137 						 * ignore resolutions that are
   4138 						 * too big for the radeon
   4139 						 */
   4140 						if (ep->edid_modes[j].hdisplay >
   4141 						    dp->rd_softc->sc_maxx)
   4142 							continue;
   4143 						if (ep->edid_modes[j].vdisplay >
   4144 						    dp->rd_softc->sc_maxy)
   4145 							continue;
   4146 
   4147 						modes[nmodes] =
   4148 							ep->edid_modes[j];
   4149 						nmodes++;
   4150 					}
   4151 				}
   4152 				valid = 1;
   4153 			} else {
   4154 				/* merge into preexisting list */
   4155 				for (j = 0; j < nmodes; j++) {
   4156 					if (!radeonfb_hasres(ep->edid_modes,
   4157 						ep->edid_nmodes,
   4158 						modes[j].hdisplay,
   4159 						modes[j].vdisplay)) {
   4160 						modes[j] = modes[nmodes];
   4161 						j--;
   4162 						nmodes--;
   4163 					}
   4164 				}
   4165 			}
   4166 		}
   4167 
   4168 		/* now we have to pick from the merged list */
   4169 		for (i = 0; i < nmodes; i++) {
   4170 			if ((modes[i].hdisplay >= *x) &&
   4171 			    (modes[i].vdisplay >= *y)) {
   4172 				*x = modes[i].hdisplay;
   4173 				*y = modes[i].vdisplay;
   4174 			}
   4175 		}
   4176 	}
   4177 
   4178 	if ((*x == 0) || (*y == 0)) {
   4179 		/* fallback to safe mode */
   4180 		*x = 640;
   4181 		*y = 480;
   4182 	}
   4183 }
   4184 
   4185 /*
   4186  * backlight levels are linear on:
   4187  * - RV200, RV250, RV280, RV350
   4188  * - but NOT on PowerBook4,3 6,3 6,5
   4189  * according to Linux' radeonfb
   4190  */
   4191 
   4192 /* Get the current backlight level for the display.  */
   4193 
   4194 static int
   4195 radeonfb_get_backlight(struct radeonfb_display *dp)
   4196 {
   4197 	int s;
   4198 	uint32_t level;
   4199 
   4200 	s = spltty();
   4201 
   4202 	level = radeonfb_get32(dp->rd_softc, RADEON_LVDS_GEN_CNTL);
   4203 	level &= RADEON_LVDS_BL_MOD_LEV_MASK;
   4204 	level >>= RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4205 
   4206 	/*
   4207 	 * On some chips, we should negate the backlight level.
   4208 	 * XXX Find out on which chips.
   4209 	 */
   4210 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT)
   4211 	level = RADEONFB_BACKLIGHT_MAX - level;
   4212 
   4213 	splx(s);
   4214 
   4215 	return level;
   4216 }
   4217 
   4218 /* Set the backlight to the given level for the display.  */
   4219 static void
   4220 radeonfb_switch_backlight(struct radeonfb_display *dp, int on)
   4221 {
   4222 	if (dp->rd_bl_on == on)
   4223 		return;
   4224 	dp->rd_bl_on = on;
   4225 	radeonfb_set_backlight(dp, dp->rd_bl_level);
   4226 }
   4227 
   4228 static int
   4229 radeonfb_set_backlight(struct radeonfb_display *dp, int level)
   4230 {
   4231 	struct radeonfb_softc *sc = dp->rd_softc;
   4232 	int rlevel, s;
   4233 	uint32_t lvds;
   4234 
   4235 	if(!sc->sc_mapped)
   4236 		return 0;
   4237 
   4238 	s = spltty();
   4239 
   4240 	dp->rd_bl_level = level;
   4241 	if (dp->rd_bl_on == 0)
   4242 		level = 0;
   4243 
   4244 	if (level < 0)
   4245 		level = 0;
   4246 	else if (level >= RADEONFB_BACKLIGHT_MAX)
   4247 		level = RADEONFB_BACKLIGHT_MAX;
   4248 
   4249 	/* On some chips, we should negate the backlight level. */
   4250 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT) {
   4251 		rlevel = RADEONFB_BACKLIGHT_MAX - level;
   4252 	} else
   4253 	rlevel = level;
   4254 
   4255 	callout_stop(&dp->rd_bl_lvds_co);
   4256 	radeonfb_engine_idle(sc);
   4257 
   4258 	/*
   4259 	 * Turn off the display if the backlight is set to 0, since the
   4260 	 * display is useless without backlight anyway.
   4261 	 */
   4262 	if (level == 0)
   4263 		radeonfb_blank(dp, 1);
   4264 	else if (radeonfb_get_backlight(dp) == 0)
   4265 		radeonfb_blank(dp, 0);
   4266 
   4267 	lvds = radeonfb_get32(sc, RADEON_LVDS_GEN_CNTL);
   4268 	lvds &= ~RADEON_LVDS_DISPLAY_DIS;
   4269 	if (!(lvds & RADEON_LVDS_BLON) || !(lvds & RADEON_LVDS_ON)) {
   4270 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_DIGON;
   4271 		lvds |= RADEON_LVDS_BLON | RADEON_LVDS_EN;
   4272 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   4273 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   4274 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4275 		lvds |= RADEON_LVDS_ON;
   4276 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_BL_MOD_EN;
   4277 	} else {
   4278 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   4279 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4280 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   4281 	}
   4282 
   4283 	dp->rd_bl_lvds_val &= ~RADEON_LVDS_STATE_MASK;
   4284 	dp->rd_bl_lvds_val |= lvds & RADEON_LVDS_STATE_MASK;
   4285 	/* XXX What is the correct delay? */
   4286 	callout_schedule(&dp->rd_bl_lvds_co, 200 * hz);
   4287 
   4288 	splx(s);
   4289 
   4290 	return 0;
   4291 }
   4292 
   4293 /*
   4294  * Callout function for delayed operations on the LVDS_GEN_CNTL register.
   4295  * Set the delayed bits in the register, and clear the stored delayed
   4296  * value.
   4297  */
   4298 
   4299 static void radeonfb_lvds_callout(void *arg)
   4300 {
   4301 	struct radeonfb_display *dp = arg;
   4302 	int s;
   4303 
   4304 	s = splhigh();
   4305 
   4306 	radeonfb_mask32(dp->rd_softc, RADEON_LVDS_GEN_CNTL, ~0,
   4307 			dp->rd_bl_lvds_val);
   4308 	dp->rd_bl_lvds_val = 0;
   4309 
   4310 	splx(s);
   4311 }
   4312 
   4313 static void
   4314 radeonfb_brightness_up(device_t dev)
   4315 {
   4316 	struct radeonfb_softc *sc = device_private(dev);
   4317 	struct radeonfb_display *dp = &sc->sc_displays[0];
   4318 	int level;
   4319 
   4320 	/* we assume the main display is the first one - need a better way */
   4321 	if (sc->sc_ndisplays < 1) return;
   4322 	/* make sure pushing the hotkeys always has an effect */
   4323 	dp->rd_bl_on = 1;
   4324 	level = dp->rd_bl_level;
   4325 	level = min(RADEONFB_BACKLIGHT_MAX, level + 5);
   4326 	radeonfb_set_backlight(dp, level);
   4327 }
   4328 
   4329 static void
   4330 radeonfb_brightness_down(device_t dev)
   4331 {
   4332 	struct radeonfb_softc *sc = device_private(dev);
   4333 	struct radeonfb_display *dp = &sc->sc_displays[0];
   4334 	int level;
   4335 
   4336 	/* we assume the main display is the first one - need a better way */
   4337 	if (sc->sc_ndisplays < 1) return;
   4338 	/* make sure pushing the hotkeys always has an effect */
   4339 	dp->rd_bl_on = 1;
   4340 	level = dp->rd_bl_level;
   4341 	level = max(0, level - 5);
   4342 	radeonfb_set_backlight(dp, level);
   4343 }
   4344