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      1 /*	$NetBSD: radeonfb.c,v 1.117 2021/08/08 12:17:37 tnn 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 1.117 2021/08/08 12:17:37 tnn 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 #include <sys/kmem.h>
     84 
     85 #include <dev/wscons/wsdisplayvar.h>
     86 #include <dev/wscons/wsconsio.h>
     87 #include <dev/wsfont/wsfont.h>
     88 #include <dev/rasops/rasops.h>
     89 #include <dev/videomode/videomode.h>
     90 #include <dev/videomode/edidvar.h>
     91 #include <dev/wscons/wsdisplay_vconsvar.h>
     92 #include <dev/pci/wsdisplay_pci.h>
     93 #include <dev/wscons/wsdisplay_glyphcachevar.h>
     94 
     95 #include <dev/pci/pcidevs.h>
     96 #include <dev/pci/pcireg.h>
     97 #include <dev/pci/pcivar.h>
     98 #include <dev/pci/pciio.h>
     99 #include <dev/pci/radeonfbreg.h>
    100 #include <dev/pci/radeonfbvar.h>
    101 #include "opt_radeonfb.h"
    102 #include "opt_vcons.h"
    103 
    104 #ifdef RADEONFB_DEPTH_32
    105 #define RADEONFB_DEFAULT_DEPTH 32
    106 #else
    107 #define RADEONFB_DEFAULT_DEPTH 8
    108 #endif
    109 
    110 static int radeonfb_match(device_t, cfdata_t, void *);
    111 static void radeonfb_attach(device_t, device_t, void *);
    112 static int radeonfb_ioctl(void *, void *, unsigned long, void *, int,
    113     struct lwp *);
    114 static paddr_t radeonfb_mmap(void *, void *, off_t, int);
    115 static int radeonfb_scratch_test(struct radeonfb_softc *, int, uint32_t);
    116 static void radeonfb_loadbios(struct radeonfb_softc *,
    117     const struct pci_attach_args *);
    118 
    119 static uintmax_t radeonfb_getprop_num(struct radeonfb_softc *, const char *,
    120     uintmax_t);
    121 static int radeonfb_getclocks(struct radeonfb_softc *);
    122 static int radeonfb_gettmds(struct radeonfb_softc *);
    123 static int radeonfb_calc_dividers(struct radeonfb_softc *, uint32_t,
    124     uint32_t *, uint32_t *, int);
    125 /* flags for radeonfb_calc_dividers */
    126 #define NO_ODD_FBDIV	1
    127 
    128 static int radeonfb_getconnectors(struct radeonfb_softc *);
    129 static const struct videomode *radeonfb_modelookup(const char *);
    130 static void radeonfb_init_screen(void *, struct vcons_screen *, int, long *);
    131 static void radeonfb_pllwriteupdate(struct radeonfb_softc *, int);
    132 static void radeonfb_pllwaitatomicread(struct radeonfb_softc *, int);
    133 static void radeonfb_program_vclk(struct radeonfb_softc *, int, int, int);
    134 static void radeonfb_modeswitch(struct radeonfb_display *);
    135 static void radeonfb_setcrtc(struct radeonfb_display *, int);
    136 static void radeonfb_init_misc(struct radeonfb_softc *);
    137 static void radeonfb_set_fbloc(struct radeonfb_softc *);
    138 static void radeonfb_init_palette(struct radeonfb_display *);
    139 static void radeonfb_r300cg_workaround(struct radeonfb_softc *);
    140 
    141 static int radeonfb_isblank(struct radeonfb_display *);
    142 static void radeonfb_blank(struct radeonfb_display *, int);
    143 static int radeonfb_set_cursor(struct radeonfb_display *,
    144     struct wsdisplay_cursor *);
    145 static int radeonfb_set_curpos(struct radeonfb_display *,
    146     struct wsdisplay_curpos *);
    147 static void radeonfb_putpal(struct radeonfb_display *, int, int, int, int);
    148 static int radeonfb_putcmap(struct radeonfb_display *, struct wsdisplay_cmap *);
    149 static int radeonfb_getcmap(struct radeonfb_display *, struct wsdisplay_cmap *);
    150 
    151 /* acceleration support */
    152 static void  radeonfb_rectfill(struct radeonfb_display *, int dstx, int dsty,
    153     int width, int height, uint32_t color);
    154 static void  radeonfb_rectfill_a(void *, int, int, int, int, long);
    155 static void radeonfb_bitblt(void *, int srcx, int srcy,
    156     int dstx, int dsty, int width, int height, int rop);
    157 
    158 /* hw cursor support */
    159 static void radeonfb_cursor_cmap(struct radeonfb_display *);
    160 static void radeonfb_cursor_shape(struct radeonfb_display *);
    161 static void radeonfb_cursor_position(struct radeonfb_display *);
    162 static void radeonfb_cursor_visible(struct radeonfb_display *);
    163 static void radeonfb_cursor_update(struct radeonfb_display *, unsigned);
    164 
    165 static inline void radeonfb_wait_fifo(struct radeonfb_softc *, int);
    166 static void radeonfb_engine_idle(struct radeonfb_softc *);
    167 static void radeonfb_engine_flush(struct radeonfb_softc *);
    168 static void radeonfb_engine_reset(struct radeonfb_softc *);
    169 static void radeonfb_engine_init(struct radeonfb_display *);
    170 static inline void radeonfb_unclip(struct radeonfb_softc *) __unused;
    171 
    172 static void radeonfb_eraserows(void *, int, int, long);
    173 static void radeonfb_erasecols(void *, int, int, int, long);
    174 static void radeonfb_copyrows(void *, int, int, int);
    175 static void radeonfb_copycols(void *, int, int, int, int);
    176 static void radeonfb_cursor(void *, int, int, int);
    177 static void radeonfb_putchar(void *, int, int, unsigned, long);
    178 static void radeonfb_putchar_aa32(void *, int, int, unsigned, long);
    179 static void radeonfb_putchar_aa8(void *, int, int, unsigned, long);
    180 #ifndef RADEONFB_ALWAYS_ACCEL_PUTCHAR
    181 static void radeonfb_putchar_wrapper(void *, int, int, unsigned, long);
    182 #endif
    183 
    184 static int radeonfb_set_backlight(struct radeonfb_display *, int);
    185 static int radeonfb_get_backlight(struct radeonfb_display *);
    186 static void radeonfb_switch_backlight(struct radeonfb_display *, int);
    187 static void radeonfb_lvds_callout(void *);
    188 
    189 static void radeonfb_brightness_up(device_t);
    190 static void radeonfb_brightness_down(device_t);
    191 
    192 static struct videomode *radeonfb_best_refresh(struct videomode *,
    193     struct videomode *);
    194 static void radeonfb_pickres(struct radeonfb_display *, uint16_t *,
    195     uint16_t *, int);
    196 static const struct videomode *radeonfb_port_mode(struct radeonfb_softc *,
    197     struct radeonfb_port *, int, int);
    198 
    199 static int radeonfb_drm_print(void *, const char *);
    200 
    201 #ifdef	RADEONFB_DEBUG
    202 int	radeon_debug = 1;
    203 #define	DPRINTF(x)	\
    204 	if (radeon_debug) printf x
    205 #define	PRINTREG(r)	DPRINTF((#r " = %08x\n", GET32(sc, r)))
    206 #define	PRINTPLL(r)	DPRINTF((#r " = %08x\n", GETPLL(sc, r)))
    207 #else
    208 #define	DPRINTF(x)
    209 #define	PRINTREG(r)
    210 #define	PRINTPLL(r)
    211 #endif
    212 
    213 #define	ROUNDUP(x,y)	(((x) + ((y) - 1)) & ~((y) - 1))
    214 
    215 #ifndef	RADEON_DEFAULT_MODE
    216 /* any reasonably modern display should handle this */
    217 #define	RADEON_DEFAULT_MODE	"1024x768x60"
    218 #endif
    219 
    220 extern const u_char rasops_cmap[768];
    221 
    222 const char	*radeonfb_default_mode = RADEON_DEFAULT_MODE;
    223 
    224 static struct {
    225 	int		size;		/* minimum memory size (MB) */
    226 	int		maxx;		/* maximum x dimension */
    227 	int		maxy;		/* maximum y dimension */
    228 	int		maxbpp;		/* maximum bpp */
    229 	int		maxdisp;	/* maximum logical display count */
    230 } radeonfb_limits[] = {
    231 	{ 32,	2048, 1536, 32, 2 },
    232 	{ 16,	1600, 1200, 32, 2 },
    233 	{ 8,	1600, 1200, 32, 1 },
    234 	{ 0,	0, 0, 0, 0 },
    235 };
    236 
    237 static struct wsscreen_descr radeonfb_stdscreen = {
    238 	"fb",		/* name */
    239 	0, 0,		/* ncols, nrows */
    240 	NULL,		/* textops */
    241 	8, 16,		/* fontwidth, fontheight */
    242 	WSSCREEN_WSCOLORS | WSSCREEN_UNDERLINE | WSSCREEN_RESIZE, /* capabilities */
    243 	0,		/* modecookie */
    244 };
    245 
    246 struct wsdisplay_accessops radeonfb_accessops = {
    247 	radeonfb_ioctl,
    248 	radeonfb_mmap,
    249 	NULL,		/* vcons_alloc_screen */
    250 	NULL,		/* vcons_free_screen */
    251 	NULL,		/* vcons_show_screen */
    252 	NULL,		/* load_font */
    253 	NULL,		/* pollc */
    254 	NULL,		/* scroll */
    255 };
    256 
    257 static struct {
    258 	uint16_t	devid;
    259 	uint16_t	family;
    260 	uint16_t	flags;
    261 } radeonfb_devices[] =
    262 {
    263 	/* R100 family */
    264 	{ PCI_PRODUCT_ATI_RADEON_R100_QD,	RADEON_R100, 0 },
    265 	{ PCI_PRODUCT_ATI_RADEON_R100_QE,	RADEON_R100, 0 },
    266 	{ PCI_PRODUCT_ATI_RADEON_R100_QF,	RADEON_R100, 0 },
    267 	{ PCI_PRODUCT_ATI_RADEON_R100_QG,	RADEON_R100, 0 },
    268 
    269 	/* RV100 family */
    270 	{ PCI_PRODUCT_ATI_RADEON_RV100_LY,	RADEON_RV100, RFB_MOB },
    271 	{ PCI_PRODUCT_ATI_RADEON_RV100_LZ,	RADEON_RV100, RFB_MOB },
    272 	{ PCI_PRODUCT_ATI_RADEON_RV100_QY,	RADEON_RV100, 0 },
    273 	{ PCI_PRODUCT_ATI_RADEON_RV100_QZ,	RADEON_RV100, 0 },
    274 
    275 	/* RS100 family */
    276 	{ PCI_PRODUCT_ATI_RADEON_RS100_4136,	RADEON_RS100, 0 },
    277 	{ PCI_PRODUCT_ATI_RADEON_RS100_4336,	RADEON_RS100, RFB_MOB },
    278 
    279 	/* RS200/RS250 family */
    280 	{ PCI_PRODUCT_ATI_RADEON_RS200_4337,	RADEON_RS200, RFB_MOB },
    281 	{ PCI_PRODUCT_ATI_RADEON_RS200_A7,	RADEON_RS200, 0 },
    282 	{ PCI_PRODUCT_ATI_RADEON_RS250_B7,	RADEON_RS200, RFB_MOB },
    283 	{ PCI_PRODUCT_ATI_RADEON_RS250_D7,	RADEON_RS200, 0 },
    284 
    285 	/* R200 family */
    286 	/* add more R200 products? , 5148 */
    287 	{ PCI_PRODUCT_ATI_RADEON_R200_BB,	RADEON_R200, 0 },
    288 	{ PCI_PRODUCT_ATI_RADEON_R200_BC,	RADEON_R200, 0 },
    289 	{ PCI_PRODUCT_ATI_RADEON_R200_QH,	RADEON_R200, 0 },
    290 	{ PCI_PRODUCT_ATI_RADEON_R200_QL,	RADEON_R200, 0 },
    291 	{ PCI_PRODUCT_ATI_RADEON_R200_QM,	RADEON_R200, 0 },
    292 
    293 	/* RV200 family */
    294 	{ PCI_PRODUCT_ATI_RADEON_RV200_LW,	RADEON_RV200, RFB_MOB },
    295 	{ PCI_PRODUCT_ATI_RADEON_RV200_LX,	RADEON_RV200, RFB_MOB },
    296 	{ PCI_PRODUCT_ATI_RADEON_RV200_QW,	RADEON_RV200, 0 },
    297 	{ PCI_PRODUCT_ATI_RADEON_RV200_QX,	RADEON_RV200, 0 },
    298 
    299 	/* RV250 family */
    300 	{ PCI_PRODUCT_ATI_RADEON_RV250_4966,	RADEON_RV250, 0 },
    301 	{ PCI_PRODUCT_ATI_RADEON_RV250_4967,	RADEON_RV250, 0 },
    302 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C64,	RADEON_RV250, RFB_MOB },
    303 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C66,	RADEON_RV250, RFB_MOB },
    304 	{ PCI_PRODUCT_ATI_RADEON_RV250_4C67,	RADEON_RV250, RFB_MOB },
    305 
    306 	/* RS300 family */
    307 	{ PCI_PRODUCT_ATI_RADEON_RS300_X5,	RADEON_RS300, 0 },
    308 	{ PCI_PRODUCT_ATI_RADEON_RS300_X4,	RADEON_RS300, 0 },
    309 	{ PCI_PRODUCT_ATI_RADEON_RS300_7834,	RADEON_RS300, 0 },
    310 	{ PCI_PRODUCT_ATI_RADEON_RS300_7835,	RADEON_RS300, RFB_MOB },
    311 
    312 	/* RV280 family */
    313 	{ PCI_PRODUCT_ATI_RADEON_RV280_5960,	RADEON_RV280, 0 },
    314 	{ PCI_PRODUCT_ATI_RADEON_RV280_5961,	RADEON_RV280, 0 },
    315 	{ PCI_PRODUCT_ATI_RADEON_RV280_5962,	RADEON_RV280, 0 },
    316 	{ PCI_PRODUCT_ATI_RADEON_RV280_5963,	RADEON_RV280, 0 },
    317 	{ PCI_PRODUCT_ATI_RADEON_RV280_5964,	RADEON_RV280, 0 },
    318 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C61,	RADEON_RV280, RFB_MOB },
    319 	{ PCI_PRODUCT_ATI_RADEON_RV280_5C63,	RADEON_RV280, RFB_MOB },
    320 
    321 	/* R300 family */
    322 	{ PCI_PRODUCT_ATI_RADEON_R300_AD,	RADEON_R300, 0 },
    323 	{ PCI_PRODUCT_ATI_RADEON_R300_AE,	RADEON_R300, 0 },
    324 	{ PCI_PRODUCT_ATI_RADEON_R300_AF,	RADEON_R300, 0 },
    325 	{ PCI_PRODUCT_ATI_RADEON_R300_AG,	RADEON_R300, 0 },
    326 	{ PCI_PRODUCT_ATI_RADEON_R300_ND,	RADEON_R300, 0 },
    327 	{ PCI_PRODUCT_ATI_RADEON_R300_NE,	RADEON_R300, 0 },
    328 	{ PCI_PRODUCT_ATI_RADEON_R300_NF,	RADEON_R300, 0 },
    329 	{ PCI_PRODUCT_ATI_RADEON_R300_NG,	RADEON_R300, 0 },
    330 
    331 	/* RV350/RV360 family */
    332 	{ PCI_PRODUCT_ATI_RADEON_RV350_AP,	RADEON_RV350, 0 },
    333 	{ PCI_PRODUCT_ATI_RADEON_RV350_AQ,	RADEON_RV350, 0 },
    334 	{ PCI_PRODUCT_ATI_RADEON_RV360_AR,	RADEON_RV350, 0 },
    335 	{ PCI_PRODUCT_ATI_RADEON_RV350_AS,	RADEON_RV350, 0 },
    336 	{ PCI_PRODUCT_ATI_RADEON_RV350_AT,	RADEON_RV350, 0 },
    337 	{ PCI_PRODUCT_ATI_RADEON_RV350_AV,	RADEON_RV350, 0 },
    338 	{ PCI_PRODUCT_ATI_RADEON_RV350_NP,	RADEON_RV350, RFB_MOB },
    339 	{ PCI_PRODUCT_ATI_RADEON_RV350_NQ,	RADEON_RV350, RFB_MOB },
    340 	{ PCI_PRODUCT_ATI_RADEON_RV350_NR,	RADEON_RV350, RFB_MOB },
    341 	{ PCI_PRODUCT_ATI_RADEON_RV350_NS,	RADEON_RV350, RFB_MOB },
    342 	{ PCI_PRODUCT_ATI_RADEON_RV350_NT,	RADEON_RV350, RFB_MOB },
    343 	{ PCI_PRODUCT_ATI_RADEON_RV350_NV,	RADEON_RV350, RFB_MOB },
    344 
    345 	/* R350/R360 family */
    346 	{ PCI_PRODUCT_ATI_RADEON_R350_AH,	RADEON_R350, 0 },
    347 	{ PCI_PRODUCT_ATI_RADEON_R350_AI,	RADEON_R350, 0 },
    348 	{ PCI_PRODUCT_ATI_RADEON_R350_AJ,	RADEON_R350, 0 },
    349 	{ PCI_PRODUCT_ATI_RADEON_R350_AK,	RADEON_R350, 0 },
    350 	{ PCI_PRODUCT_ATI_RADEON_R350_NH,	RADEON_R350, 0 },
    351 	{ PCI_PRODUCT_ATI_RADEON_R350_NI,	RADEON_R350, 0 },
    352 	{ PCI_PRODUCT_ATI_RADEON_R350_NK,	RADEON_R350, 0 },
    353 	{ PCI_PRODUCT_ATI_RADEON_R360_NJ,	RADEON_R350, 0 },
    354 
    355 	/* RV380/RV370 family */
    356 	{ PCI_PRODUCT_ATI_RADEON_RV380_3150,	RADEON_RV380, RFB_MOB },
    357 	{ PCI_PRODUCT_ATI_RADEON_RV380_3154,	RADEON_RV380, RFB_MOB },
    358 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E50,	RADEON_RV380, 0 },
    359 	{ PCI_PRODUCT_ATI_RADEON_RV380_3E54,	RADEON_RV380, 0 },
    360 	{ PCI_PRODUCT_ATI_RADEON_RV370_5460,	RADEON_RV380, RFB_MOB },
    361 	{ PCI_PRODUCT_ATI_RADEON_RV370_5464,	RADEON_RV380, RFB_MOB },
    362 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B60,	RADEON_RV380, 0 },
    363 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B63,	RADEON_RV380, 0 },
    364 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B64,	RADEON_RV380, 0 },
    365 	{ PCI_PRODUCT_ATI_RADEON_RV370_5B65,	RADEON_RV380, 0 },
    366 
    367 #if notyet
    368 	/* R420/R423 family */
    369 	{ PCI_PRODUCT_ATI_RADEON_R420_JH,	RADEON_R420, 0 },
    370 	{ PCI_PRODUCT_ATI_RADEON_R420_JI,	RADEON_R420, 0 },
    371 	{ PCI_PRODUCT_ATI_RADEON_R420_JJ,	RADEON_R420, 0 },
    372 	{ PCI_PRODUCT_ATI_RADEON_R420_JK,	RADEON_R420, 0 },
    373 	{ PCI_PRODUCT_ATI_RADEON_R420_JL,	RADEON_R420, 0 },
    374 	{ PCI_PRODUCT_ATI_RADEON_R420_JM,	RADEON_R420, 0 },
    375 	{ PCI_PRODUCT_ATI_RADEON_R420_JN,	RADEON_R420, RFB_MOB },
    376 	{ PCI_PRODUCT_ATI_RADEON_R420_JP,	RADEON_R420, 0 },
    377 	{ PCI_PRODUCT_ATI_RADEON_R423_UH,	RADEON_R420, 0 },
    378 	{ PCI_PRODUCT_ATI_RADEON_R423_UI,	RADEON_R420, 0 },
    379 	{ PCI_PRODUCT_ATI_RADEON_R423_UJ,	RADEON_R420, 0 },
    380 	{ PCI_PRODUCT_ATI_RADEON_R423_UK,	RADEON_R420, 0 },
    381 	{ PCI_PRODUCT_ATI_RADEON_R423_UQ,	RADEON_R420, 0 },
    382 	{ PCI_PRODUCT_ATI_RADEON_R423_UR,	RADEON_R420, 0 },
    383 	{ PCI_PRODUCT_ATI_RADEON_R423_UT,	RADEON_R420, 0 },
    384 	{ PCI_PRODUCT_ATI_RADEON_R423_5D57,	RADEON_R420, 0 },
    385 	{ PCI_PRODUCT_ATI_RADEON_R430_554F,	RADEON_R420, 0 },
    386 #endif
    387 
    388 	/* R5xx family */
    389 	{ 0x7240,	RADEON_R580, RFB_IS_AVIVO },
    390 	{ 0, 0, 0 }
    391 };
    392 
    393 static struct {
    394 	int divider;
    395 	int mask;
    396 } radeonfb_dividers[] = {
    397 	{ 16, 5 },
    398 	{ 12, 7 },
    399 	{  8, 3 },
    400 	{  6, 6 },
    401 	{  4, 2 },
    402 	{  3, 4 },
    403 	{  2, 1 },
    404 	{  1, 0 },
    405 	{  0, 0 }
    406 };
    407 
    408 /*
    409  * This table taken from X11.
    410  */
    411 static const struct {
    412 	int			family;
    413 	struct radeon_tmds_pll	plls[4];
    414 } radeonfb_tmds_pll[] = {
    415 	{ RADEON_R100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    416 	{ RADEON_RV100,	{{12000, 0xa1b}, {-1, 0xa3f}}},
    417 	{ RADEON_RS100, {{0, 0}}},
    418 	{ RADEON_RV200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    419 	{ RADEON_RS200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    420 	{ RADEON_R200,	{{15000, 0xa1b}, {-1, 0xa3f}}},
    421 	{ RADEON_RV250,	{{15500, 0x81b}, {-1, 0x83f}}},
    422 	{ RADEON_RS300, {{0, 0}}},
    423 	{ RADEON_RV280,	{{13000, 0x400f4}, {15000, 0x400f7}, {-1, 0x40111}}},
    424 	{ RADEON_R300,	{{-1, 0xb01cb}}},
    425 	{ RADEON_R350,	{{-1, 0xb01cb}}},
    426 	{ RADEON_RV350,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    427 	{ RADEON_RV380,	{{15000, 0xb0155}, {-1, 0xb01cb}}},
    428 	{ RADEON_R420,	{{-1, 0xb01cb}}},
    429 	{ RADEON_R580,	{{-1, 0xb01cb}}}, /* XXX likely bogus */
    430 };
    431 
    432 #define RADEONFB_BACKLIGHT_MAX    255  /* Maximum backlight level. */
    433 
    434 
    435 CFATTACH_DECL_NEW(radeonfb, sizeof (struct radeonfb_softc),
    436     radeonfb_match, radeonfb_attach, NULL, NULL);
    437 
    438 static int
    439 radeonfb_match(device_t parent, cfdata_t match, void *aux)
    440 {
    441 	const struct pci_attach_args	*pa = aux;
    442 	int			i;
    443 
    444 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_ATI)
    445 		return 0;
    446 
    447 	for (i = 0; radeonfb_devices[i].devid; i++) {
    448 		if (PCI_PRODUCT(pa->pa_id) == radeonfb_devices[i].devid)
    449 			return 100;	/* high to defeat VGA/VESA */
    450 	}
    451 
    452 	return 0;
    453 }
    454 
    455 static void
    456 radeonfb_attach(device_t parent, device_t dev, void *aux)
    457 {
    458 	struct radeonfb_softc	*sc = device_private(dev);
    459 	const struct pci_attach_args	*pa = aux;
    460 	const char		*mptr;
    461 	bus_size_t		bsz;
    462 	pcireg_t		screg;
    463 	int			i, j, fg, bg, ul, flags;
    464 	uint32_t		v;
    465 
    466 	sc->sc_dev = dev;
    467 	sc->sc_id = pa->pa_id;
    468 	for (i = 0; radeonfb_devices[i].devid; i++) {
    469 		if (PCI_PRODUCT(sc->sc_id) == radeonfb_devices[i].devid)
    470 			break;
    471 	}
    472 
    473 	pci_aprint_devinfo(pa, NULL);
    474 
    475 	DPRINTF(("%s", prop_dictionary_externalize(device_properties(dev))));
    476 
    477 	KASSERT(radeonfb_devices[i].devid != 0);
    478 	sc->sc_pt = pa->pa_tag;
    479 	sc->sc_iot = pa->pa_iot;
    480 	sc->sc_pc = pa->pa_pc;
    481 	sc->sc_family = radeonfb_devices[i].family;
    482 	sc->sc_flags = radeonfb_devices[i].flags;
    483 	sc->sc_bios = NULL;
    484 	sc->sc_biossz = 0;
    485 
    486 	/* enable memory and IO access */
    487 	screg = pci_conf_read(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG);
    488 	screg |= PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE;
    489 	pci_conf_write(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG, screg);
    490 
    491 	/*
    492 	 * Some flags are general to entire chip families, and rather
    493 	 * than clutter up the table with them, we go ahead and set
    494 	 * them here.
    495 	 */
    496 	switch (sc->sc_family) {
    497 	case RADEON_RS100:
    498 	case RADEON_RS200:
    499 		sc->sc_flags |= RFB_IGP | RFB_RV100;
    500 		break;
    501 
    502 	case RADEON_RV100:
    503 	case RADEON_RV200:
    504 	case RADEON_RV250:
    505 	case RADEON_RV280:
    506 		sc->sc_flags |= RFB_RV100;
    507 		break;
    508 
    509 	case RADEON_RS300:
    510 		sc->sc_flags |= RFB_SDAC | RFB_IGP | RFB_RV100;
    511 		break;
    512 
    513 	case RADEON_R300:
    514 	case RADEON_RV350:
    515 	case RADEON_R350:
    516 	case RADEON_RV380:
    517 	case RADEON_R420:
    518 	case RADEON_R580:
    519 		/* newer chips */
    520 		sc->sc_flags |= RFB_R300;
    521 		break;
    522 
    523 	case RADEON_R100:
    524 		sc->sc_flags |= RFB_NCRTC2;
    525 		break;
    526 	}
    527 
    528 	if ((sc->sc_family == RADEON_RV200) ||
    529 	    (sc->sc_family == RADEON_RV250) ||
    530 	    (sc->sc_family == RADEON_RV280) ||
    531 	    (sc->sc_family == RADEON_RV350)) {
    532 		bool inverted = 0;
    533 		/* backlight level is linear */
    534 		DPRINTF(("found RV* chip, backlight is supposedly linear\n"));
    535 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
    536 		    "backlight_level_reverted", &inverted);
    537 		if (inverted) {
    538 			DPRINTF(("nope, it's inverted\n"));
    539 			sc->sc_flags |= RFB_INV_BLIGHT;
    540 		}
    541 	} else
    542 		sc->sc_flags |= RFB_INV_BLIGHT;
    543 
    544 	/*
    545 	 * XXX: to support true multihead, this must change.
    546 	 */
    547 	sc->sc_ndisplays = 1;
    548 
    549 	/* XXX: */
    550 	if (!HAS_CRTC2(sc)) {
    551 		sc->sc_ndisplays = 1;
    552 	}
    553 
    554 	if (pci_mapreg_map(pa, RADEON_MAPREG_MMIO, PCI_MAPREG_TYPE_MEM,	0,
    555 		&sc->sc_regt, &sc->sc_regh, &sc->sc_regaddr,
    556 		&sc->sc_regsz) != 0) {
    557 		aprint_error("%s: unable to map registers!\n", XNAME(sc));
    558 		goto error;
    559 	}
    560 
    561 	if (pci_mapreg_info(sc->sc_pc, sc->sc_pt, PCI_MAPREG_ROM,
    562 	     PCI_MAPREG_TYPE_ROM, &sc->sc_romaddr, &sc->sc_romsz, &flags) != 0)
    563 	{
    564 		aprint_error("%s: unable to find ROM!\n", XNAME(sc));
    565 		goto error;
    566 	}
    567 	sc->sc_romt = sc->sc_memt;
    568 
    569 	sc->sc_mapped = TRUE;
    570 
    571 	/* scratch register test... */
    572 	if (radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0x55555555) ||
    573 	    radeonfb_scratch_test(sc, RADEON_BIOS_0_SCRATCH, 0xaaaaaaaa)) {
    574 		aprint_error("%s: scratch register test failed!\n", XNAME(sc));
    575 		goto error;
    576 	}
    577 
    578 	PRINTREG(RADEON_CRTC_EXT_CNTL);
    579 	PRINTREG(RADEON_CRTC_GEN_CNTL);
    580 	PRINTREG(RADEON_CRTC2_GEN_CNTL);
    581 	PRINTREG(RADEON_DISP_OUTPUT_CNTL);
    582 	PRINTREG(RADEON_DAC_CNTL2);
    583 	PRINTREG(RADEON_BIOS_4_SCRATCH);
    584 	PRINTREG(RADEON_FP_GEN_CNTL);
    585 	sc->sc_fp_gen_cntl = GET32(sc, RADEON_FP_GEN_CNTL);
    586 	PRINTREG(RADEON_FP2_GEN_CNTL);
    587 	PRINTREG(RADEON_TMDS_CNTL);
    588 	PRINTREG(RADEON_TMDS_TRANSMITTER_CNTL);
    589 	PRINTREG(RADEON_TMDS_PLL_CNTL);
    590 	PRINTREG(RADEON_LVDS_GEN_CNTL);
    591 	PRINTREG(RADEON_DISP_HW_DEBUG);
    592 	if (!IS_AVIVO(sc)) {
    593 		/*
    594 		XXX: We can't print this, as it's not correctly aligned
    595 		PRINTREG(RADEON_PIXCLKS_CNTL);
    596 		*/
    597 		PRINTREG(RADEON_CRTC_H_SYNC_STRT_WID);
    598 		PRINTREG(RADEON_FP_H_SYNC_STRT_WID);
    599 		PRINTREG(RADEON_CRTC2_H_SYNC_STRT_WID);
    600 		PRINTREG(RADEON_FP_H2_SYNC_STRT_WID);
    601 	}
    602 /*
    603  * XXX
    604  * This was if (IS_RV100()), which is set for all pre-R3xx chips.
    605  * I suspect this only makes sense on Sun XVR-100 with firmware that doesn't
    606  * support DVI, so for now let's restrict it to only actual RV100
    607  */
    608 	if (sc->sc_family == RADEON_RV100)
    609 		PUT32(sc, RADEON_TMDS_PLL_CNTL, 0xa27);
    610 
    611 	/* XXX
    612 	 * according to xf86-video-radeon R3xx has this bit backwards
    613 	 */
    614 	if (IS_R300(sc)) {
    615 		PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    616 		    0,
    617 		    ~(RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST));
    618 	} else {
    619 		PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    620 		    RADEON_TMDS_TRANSMITTER_PLLEN,
    621 		    ~(RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST));
    622 	}
    623 
    624 	radeonfb_i2c_init(sc);
    625 
    626 	radeonfb_loadbios(sc, pa);
    627 
    628 #ifdef	RADEONFB_BIOS_INIT
    629 	if (radeonfb_bios_init(sc)) {
    630 		aprint_error("%s: BIOS inititialization failed\n", XNAME(sc));
    631 	}
    632 #endif
    633 
    634 	if (radeonfb_getclocks(sc)) {
    635 		aprint_error("%s: Unable to get reference clocks from BIOS\n",
    636 		    XNAME(sc));
    637 		goto error;
    638 	}
    639 
    640 	if (radeonfb_gettmds(sc)) {
    641 		aprint_error("%s: Unable to identify TMDS PLL settings\n",
    642 		    XNAME(sc));
    643 		goto error;
    644 	}
    645 
    646 	aprint_verbose("%s: refclk = %d.%03d MHz, refdiv = %d "
    647 	    "minpll = %d, maxpll = %d\n", XNAME(sc),
    648 	    (int)sc->sc_refclk / 1000, (int)sc->sc_refclk % 1000,
    649 	    (int)sc->sc_refdiv, (int)sc->sc_minpll, (int)sc->sc_maxpll);
    650 
    651 	radeonfb_getconnectors(sc);
    652 
    653 	radeonfb_set_fbloc(sc);
    654 
    655 	/* 64 MB should be enough -- more just wastes map entries */
    656 	if (sc->sc_memsz > (64 << 20))
    657 		sc->sc_memsz = (64 << 20);
    658 
    659 	for (i = 0; radeonfb_limits[i].size; i++) {
    660 		if (sc->sc_memsz >= radeonfb_limits[i].size) {
    661 			sc->sc_maxx = radeonfb_limits[i].maxx;
    662 			sc->sc_maxy = radeonfb_limits[i].maxy;
    663 			sc->sc_maxbpp = radeonfb_limits[i].maxbpp;
    664 			/* framebuffer offset, start at a 4K page */
    665 			sc->sc_fboffset = sc->sc_memsz /
    666 			    radeonfb_limits[i].maxdisp;
    667 			/*
    668 			 * we use the fbsize to figure out where we can store
    669 			 * things like cursor data.
    670 			 */
    671 			sc->sc_fbsize =
    672 			    ROUNDUP(ROUNDUP(sc->sc_maxx * sc->sc_maxbpp / 8 ,
    673 					RADEON_STRIDEALIGN) * sc->sc_maxy,
    674 				4096);
    675 			break;
    676 		}
    677 	}
    678 
    679 
    680 	radeonfb_init_misc(sc);
    681 
    682 	/* program the DAC wirings */
    683 	for (i = 0; i < (HAS_CRTC2(sc) ? 2 : 1); i++) {
    684 		switch (sc->sc_ports[i].rp_dac_type) {
    685 		case RADEON_DAC_PRIMARY:
    686 			PATCH32(sc, RADEON_DAC_CNTL2,
    687 			    i ? RADEON_DAC2_DAC_CLK_SEL : 0,
    688 			    ~RADEON_DAC2_DAC_CLK_SEL);
    689 			break;
    690 		case RADEON_DAC_TVDAC:
    691 			/* we always use the TVDAC to drive a secondary analog
    692 			 * CRT for now.  if we ever support TV-out this will
    693 			 * have to change.
    694 			 */
    695 			SET32(sc, RADEON_DAC_CNTL2,
    696 			    RADEON_DAC2_DAC2_CLK_SEL);
    697 			PATCH32(sc, RADEON_DISP_HW_DEBUG,
    698 			    i ? 0 : RADEON_CRT2_DISP1_SEL,
    699 			    ~RADEON_CRT2_DISP1_SEL);
    700 			/* we're using CRTC2 for the 2nd port */
    701 			if (sc->sc_ports[i].rp_number == 1) {
    702 				PATCH32(sc, RADEON_DISP_OUTPUT_CNTL,
    703 				    RADEON_DISP_DAC2_SOURCE_CRTC2,
    704 				    ~RADEON_DISP_DAC2_SOURCE_MASK);
    705 			}
    706 
    707 			break;
    708 		}
    709 		DPRINTF(("%s: port %d tmds type %d\n", __func__, i,
    710 		    sc->sc_ports[i].rp_tmds_type));
    711 		switch (sc->sc_ports[i].rp_tmds_type) {
    712 		case RADEON_TMDS_INT:
    713 			/* point FP0 at the CRTC this port uses */
    714 			DPRINTF(("%s: plugging internal TMDS into CRTC %d\n",
    715 			    __func__, sc->sc_ports[i].rp_number));
    716 			if (IS_R300(sc)) {
    717 				PATCH32(sc, RADEON_FP_GEN_CNTL,
    718 				    sc->sc_ports[i].rp_number ?
    719 				      R200_FP_SOURCE_SEL_CRTC2 :
    720 				      R200_FP_SOURCE_SEL_CRTC1,
    721 				    ~R200_FP_SOURCE_SEL_MASK);
    722 			} else {
    723 				PATCH32(sc, RADEON_FP_GEN_CNTL,
    724 				    sc->sc_ports[i].rp_number ?
    725 				      RADEON_FP_SEL_CRTC2 :
    726 				      RADEON_FP_SEL_CRTC1,
    727 				    ~RADEON_FP_SEL_MASK);
    728 			}
    729 			break;
    730 		case RADEON_TMDS_EXT:
    731 			/* point FP2 at the CRTC this port uses */
    732 			DPRINTF(("%s: plugging external TMDS into CRTC %d\n",
    733 			    __func__, sc->sc_ports[i].rp_number));
    734 			if (IS_R300(sc)) {
    735 				PATCH32(sc, RADEON_FP2_GEN_CNTL,
    736 				    sc->sc_ports[i].rp_number ?
    737 				      R200_FP2_SOURCE_SEL_CRTC2 :
    738 				      R200_FP2_SOURCE_SEL_CRTC1,
    739 				    ~R200_FP2_SOURCE_SEL_CRTC2);
    740 			} else {
    741 				PATCH32(sc, RADEON_FP2_GEN_CNTL,
    742 				    sc->sc_ports[i].rp_number ?
    743 				      RADEON_FP2_SRC_SEL_CRTC2 :
    744 				      RADEON_FP2_SRC_SEL_CRTC1,
    745 				    ~RADEON_FP2_SRC_SEL_CRTC2);
    746 			}
    747 			break;
    748 		}
    749 	}
    750 	PRINTREG(RADEON_DAC_CNTL2);
    751 	PRINTREG(RADEON_DISP_HW_DEBUG);
    752 
    753 	PRINTREG(RADEON_DAC_CNTL);
    754 	/* other DAC programming */
    755 	v = GET32(sc, RADEON_DAC_CNTL);
    756 	v &= (RADEON_DAC_RANGE_CNTL_MASK | RADEON_DAC_BLANKING);
    757 	v |= RADEON_DAC_MASK_ALL | RADEON_DAC_8BIT_EN;
    758 	PUT32(sc, RADEON_DAC_CNTL, v);
    759 	PRINTREG(RADEON_DAC_CNTL);
    760 
    761 	/* XXX: this may need more investigation */
    762 	PUT32(sc, RADEON_TV_DAC_CNTL, 0x00280203);
    763 	PRINTREG(RADEON_TV_DAC_CNTL);
    764 
    765 	/* enable TMDS */
    766 	SET32(sc, RADEON_FP_GEN_CNTL,
    767 	    RADEON_FP_TMDS_EN |
    768 		RADEON_FP_CRTC_DONT_SHADOW_VPAR |
    769 		RADEON_FP_CRTC_DONT_SHADOW_HEND);
    770 	/*
    771 	 * XXX
    772 	 * no idea why this is necessary - if I do not clear this bit on my
    773 	 * iBook G4 the screen remains black, even though it's already clear.
    774 	 * It needs to be set on my Sun XVR-100 for the DVI port to work
    775 	 * TODO:
    776 	 * see if this is still necessary now that CRTCs, DACs and outputs are
    777 	 * getting wired up in a halfway sane way
    778 	 */
    779 	if (sc->sc_fp_gen_cntl & RADEON_FP_SEL_CRTC2) {
    780 		SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    781 	} else {
    782 		CLR32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    783 	}
    784 
    785 	/*
    786 	 * we use bus_space_map instead of pci_mapreg, because we don't
    787 	 * need the full aperature space.  no point in wasting virtual
    788 	 * address space we don't intend to use, right?
    789 	 */
    790 	if ((sc->sc_memsz < (4096 * 1024)) ||
    791 	    (pci_mapreg_info(sc->sc_pc, sc->sc_pt, RADEON_MAPREG_VRAM,
    792 		PCI_MAPREG_TYPE_MEM, &sc->sc_memaddr, &bsz, NULL) != 0) ||
    793 	    (bsz < sc->sc_memsz)) {
    794 		sc->sc_memsz = 0;
    795 		aprint_error("%s: Bad frame buffer configuration\n",
    796 		    XNAME(sc));
    797 		goto error;
    798 	}
    799 
    800 	sc->sc_memt = pa->pa_memt;
    801 	if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
    802 		BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE,
    803 		&sc->sc_memh) != 0) {
    804 		sc->sc_memsz = 0;
    805 		aprint_error("%s: Unable to map frame buffer\n", XNAME(sc));
    806 		goto error;
    807 	}
    808 
    809 	aprint_normal("%s: %d MB aperture at 0x%08x, "
    810 	    "%d KB registers at 0x%08x\n", XNAME(sc),
    811 	    (int)sc->sc_memsz >> 20, (unsigned)sc->sc_memaddr,
    812 	    (int)sc->sc_regsz >> 10, (unsigned)sc->sc_regaddr);
    813 
    814 	/* setup default video mode from devprop (allows PROM override) */
    815 	sc->sc_defaultmode = radeonfb_default_mode;
    816 	if (prop_dictionary_get_string(device_properties(sc->sc_dev),
    817 	    "videomode", &mptr)) {
    818 
    819 		strncpy(sc->sc_modebuf, mptr, sizeof(sc->sc_modebuf));
    820 		sc->sc_defaultmode = sc->sc_modebuf;
    821 	}
    822 
    823 	/* initialize some basic display parameters */
    824 	for (i = 0; i < sc->sc_ndisplays; i++) {
    825 		struct radeonfb_display *dp = &sc->sc_displays[i];
    826 		struct rasops_info *ri;
    827 		long defattr;
    828 		struct wsemuldisplaydev_attach_args aa;
    829 
    830 		/*
    831 		 * Figure out how many "displays" (desktops) we are going to
    832 		 * support.  If more than one, then each CRTC gets its own
    833 		 * programming.
    834 		 *
    835 		 * XXX: this code needs to change to support mergedfb.
    836 		 * XXX: would be nice to allow this to be overridden
    837 		 */
    838 		if (HAS_CRTC2(sc) && (sc->sc_ndisplays == 1)) {
    839 			DPRINTF(("dual crtcs!\n"));
    840 			dp->rd_ncrtcs = 2;
    841 			dp->rd_crtcs[0].rc_port =
    842 			    &sc->sc_ports[0];
    843 			dp->rd_crtcs[0].rc_number = sc->sc_ports[0].rp_number;
    844 			dp->rd_crtcs[1].rc_port =
    845 			    &sc->sc_ports[1];
    846 			dp->rd_crtcs[1].rc_number = sc->sc_ports[1].rp_number;
    847 		} else {
    848 			dp->rd_ncrtcs = 1;
    849 			dp->rd_crtcs[0].rc_port =
    850 			    &sc->sc_ports[i];
    851 			dp->rd_crtcs[0].rc_number = sc->sc_ports[i].rp_number;
    852 		}
    853 
    854 		dp->rd_softc = sc;
    855 		dp->rd_wsmode = WSDISPLAYIO_MODE_EMUL;
    856 		dp->rd_bpp = RADEONFB_DEFAULT_DEPTH;	/* XXX */
    857 
    858 		/* for text mode, we pick a resolution that won't
    859 		 * require panning */
    860 		radeonfb_pickres(dp, &dp->rd_virtx, &dp->rd_virty, 0);
    861 
    862 		aprint_normal("%s: display %d: "
    863 		    "initial virtual resolution %dx%d at %d bpp\n",
    864 		    XNAME(sc), i, dp->rd_virtx, dp->rd_virty, dp->rd_bpp);
    865 		aprint_normal_dev(sc->sc_dev, "using %d MB per display\n",
    866 		    sc->sc_fboffset >> 20);
    867 		/* now select the *video mode* that we will use */
    868 		for (j = 0; j < dp->rd_ncrtcs; j++) {
    869 			const struct videomode *vmp;
    870 			vmp = radeonfb_port_mode(sc, dp->rd_crtcs[j].rc_port,
    871 			    dp->rd_virtx, dp->rd_virty);
    872 
    873 			/*
    874 			 * virtual resolution should be at least as high as
    875 			 * physical
    876 			 */
    877 			if (dp->rd_virtx < vmp->hdisplay ||
    878 			    dp->rd_virty < vmp->vdisplay) {
    879 				dp->rd_virtx = vmp->hdisplay;
    880 				dp->rd_virty = vmp->vdisplay;
    881 			}
    882 
    883 			dp->rd_crtcs[j].rc_videomode = *vmp;
    884 			printf("%s: port %d: physical %dx%d %dHz\n",
    885 			    XNAME(sc), j, vmp->hdisplay, vmp->vdisplay,
    886 			    DIVIDE(DIVIDE(vmp->dot_clock * 1000,
    887 				       vmp->htotal), vmp->vtotal));
    888 		}
    889 
    890 		/* N.B.: radeon wants 64-byte aligned stride */
    891 		dp->rd_stride = dp->rd_virtx * dp->rd_bpp / 8;
    892 		dp->rd_stride = ROUNDUP(dp->rd_stride, RADEON_STRIDEALIGN);
    893 
    894 		dp->rd_offset = sc->sc_fboffset * i;
    895 		dp->rd_fbptr = (vaddr_t)bus_space_vaddr(sc->sc_memt,
    896 		    sc->sc_memh) + dp->rd_offset;
    897 		dp->rd_curoff = sc->sc_fboffset - 16384; /* 16KB cursor space */
    898 		dp->rd_curptr = dp->rd_fbptr + dp->rd_curoff;
    899 
    900 		DPRINTF(("fpbtr = %p\n", (void *)dp->rd_fbptr));
    901 
    902 		switch (dp->rd_bpp) {
    903 		case 8:
    904 			dp->rd_format = 2;
    905 			break;
    906 		case 32:
    907 			dp->rd_format = 6;
    908 			break;
    909 		default:
    910 			aprint_error("%s: bad depth %d\n", XNAME(sc),
    911 			    dp->rd_bpp);
    912 			goto error;
    913 		}
    914 		DPRINTF(("init engine\n"));
    915 		/* XXX: this seems suspicious - per display engine
    916 		   initialization? */
    917 
    918 		radeonfb_modeswitch(dp);
    919 		radeonfb_engine_init(dp);
    920 
    921 		/* copy the template into place */
    922 		dp->rd_wsscreens_storage[0] = radeonfb_stdscreen;
    923 		dp->rd_wsscreens = dp->rd_wsscreens_storage;
    924 
    925 		/* and make up the list */
    926 		dp->rd_wsscreenlist.nscreens = 1;
    927 		dp->rd_wsscreenlist.screens = (void *)&dp->rd_wsscreens;
    928 
    929 		vcons_init(&dp->rd_vd, dp, dp->rd_wsscreens,
    930 		    &radeonfb_accessops);
    931 
    932 		dp->rd_vd.init_screen = radeonfb_init_screen;
    933 
    934 		dp->rd_console = 0;
    935 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
    936 		    "is_console", &dp->rd_console);
    937 
    938 		dp->rd_vscreen.scr_flags |= VCONS_SCREEN_IS_STATIC;
    939 
    940 
    941 		vcons_init_screen(&dp->rd_vd, &dp->rd_vscreen,
    942 		    dp->rd_console, &defattr);
    943 
    944 		ri = &dp->rd_vscreen.scr_ri;
    945 
    946 		/* clear the screen */
    947 		rasops_unpack_attr(defattr, &fg, &bg, &ul);
    948 		dp->rd_bg = ri->ri_devcmap[bg & 0xf];
    949 		radeonfb_rectfill(dp, 0, 0, ri->ri_width, ri->ri_height,
    950 		    dp->rd_bg);
    951 
    952 		dp->rd_wsscreens->textops = &ri->ri_ops;
    953 		dp->rd_wsscreens->capabilities = ri->ri_caps;
    954 		dp->rd_wsscreens->nrows = ri->ri_rows;
    955 		dp->rd_wsscreens->ncols = ri->ri_cols;
    956 
    957 #ifdef SPLASHSCREEN
    958 		dp->rd_splash.si_depth = ri->ri_depth;
    959 		dp->rd_splash.si_bits = ri->ri_bits;
    960 		dp->rd_splash.si_hwbits = ri->ri_hwbits;
    961 		dp->rd_splash.si_width = ri->ri_width;
    962 		dp->rd_splash.si_height = ri->ri_height;
    963 		dp->rd_splash.si_stride = ri->ri_stride;
    964 		dp->rd_splash.si_fillrect = NULL;
    965 #endif
    966 		dp->rd_gc.gc_bitblt = radeonfb_bitblt;
    967 		dp->rd_gc.gc_rectfill = radeonfb_rectfill_a;
    968 		dp->rd_gc.gc_rop = RADEON_ROP3_S;
    969 		dp->rd_gc.gc_blitcookie = dp;
    970 		/*
    971 		 * use memory between framebuffer and cursor area as glyph
    972 		 * cache, cap at 4096 lines
    973 		 */
    974 		glyphcache_init(&dp->rd_gc, dp->rd_virty + 4,
    975 		    uimin(4096,
    976 		        (dp->rd_curoff / dp->rd_stride) - (dp->rd_virty + 4)),
    977 		    dp->rd_virtx,
    978 		    ri->ri_font->fontwidth,
    979 		    ri->ri_font->fontheight,
    980 		    defattr);
    981 		dp->rd_vd.show_screen_cookie = &dp->rd_gc;
    982 		dp->rd_vd.show_screen_cb = glyphcache_adapt;
    983 
    984 		if (dp->rd_console) {
    985 
    986 			wsdisplay_cnattach(dp->rd_wsscreens, ri, 0, 0,
    987 			    defattr);
    988 #ifdef SPLASHSCREEN
    989 			if (splash_render(&dp->rd_splash,
    990 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
    991 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
    992 			else
    993 #endif
    994 				vcons_replay_msgbuf(&dp->rd_vscreen);
    995 		} else {
    996 
    997 			/*
    998 			 * since we're not the console we can postpone
    999 			 * the rest until someone actually allocates a
   1000 			 * screen for us.  but we do clear the screen
   1001 			 * at least.
   1002 			 */
   1003 			memset(ri->ri_bits, 0, 1024);
   1004 
   1005 #ifdef SPLASHSCREEN
   1006 			if (splash_render(&dp->rd_splash,
   1007 			    SPLASH_F_CENTER|SPLASH_F_FILL) == 0)
   1008 				SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
   1009 #endif
   1010 		}
   1011 
   1012 		aa.console = dp->rd_console;
   1013 		aa.scrdata = &dp->rd_wsscreenlist;
   1014 		aa.accessops = &radeonfb_accessops;
   1015 		aa.accesscookie = &dp->rd_vd;
   1016 
   1017 		config_found(sc->sc_dev, &aa, wsemuldisplaydevprint,
   1018 		    CFARGS(.iattr = "wsemuldisplaydev"));
   1019 
   1020 		radeonfb_blank(dp, 0);
   1021 
   1022 		/* Initialise delayed lvds operations for backlight. */
   1023 		callout_init(&dp->rd_bl_lvds_co, 0);
   1024 		callout_setfunc(&dp->rd_bl_lvds_co,
   1025 				radeonfb_lvds_callout, dp);
   1026 
   1027 		dp->rd_bl_on = 1;
   1028 		if (sc->sc_flags & RFB_MOB) {
   1029 			dp->rd_bl_level = radeonfb_get_backlight(dp);
   1030 		} else
   1031 			dp->rd_bl_level = 128;
   1032 
   1033 		radeonfb_set_backlight(dp, dp->rd_bl_level);
   1034 	}
   1035 	for (i = 0; i < RADEON_NDISPLAYS; i++)
   1036 		radeonfb_init_palette(&sc->sc_displays[i]);
   1037 
   1038 	if (HAS_CRTC2(sc) && !IS_AVIVO(sc)) {
   1039 		CLR32(sc, RADEON_CRTC2_GEN_CNTL, RADEON_CRTC2_DISP_DIS);
   1040 	}
   1041 
   1042 	if (!IS_AVIVO(sc)) {
   1043 		CLR32(sc, RADEON_CRTC_EXT_CNTL, RADEON_CRTC_DISPLAY_DIS);
   1044 		SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_FPON);
   1045 	}
   1046 
   1047 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_UP,
   1048 	    radeonfb_brightness_up, TRUE);
   1049 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_DOWN,
   1050 	    radeonfb_brightness_down, TRUE);
   1051 
   1052 	/*
   1053 	 * if we attach a DRM we need to unmap registers in
   1054 	 * WSDISPLAYIO_MODE_MAPPED, since this keeps us from doing things like
   1055 	 * screen blanking we only do it if needed
   1056 	 */
   1057 	sc->sc_needs_unmap =
   1058 	    (config_found(dev, aux, radeonfb_drm_print,
   1059 			  CFARGS(.iattr = "drm")) != NULL);
   1060 	DPRINTF(("needs_unmap: %d\n", sc->sc_needs_unmap));
   1061 
   1062 	if (!IS_AVIVO(sc)) {
   1063 		PRINTREG(RADEON_CRTC_EXT_CNTL);
   1064 		PRINTREG(RADEON_CRTC_GEN_CNTL);
   1065 		PRINTREG(RADEON_CRTC2_GEN_CNTL);
   1066 		PRINTREG(RADEON_DISP_OUTPUT_CNTL);
   1067 		PRINTREG(RADEON_DAC_CNTL2);
   1068 		PRINTREG(RADEON_FP_GEN_CNTL);
   1069 		PRINTREG(RADEON_FP2_GEN_CNTL);
   1070 		PRINTREG(RADEON_TMDS_CNTL);
   1071 		PRINTREG(RADEON_TMDS_TRANSMITTER_CNTL);
   1072 		PRINTREG(RADEON_TMDS_PLL_CNTL);
   1073 		/*
   1074 		XXX: We can't print this, as it's not correctly aligned
   1075 		PRINTREG(RADEON_PIXCLKS_CNTL);
   1076 		*/
   1077 	}
   1078 	return;
   1079 
   1080 error:
   1081 	if (sc->sc_biossz)
   1082 		free(sc->sc_bios, M_DEVBUF);
   1083 
   1084 	if (sc->sc_regsz)
   1085 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
   1086 
   1087 	if (sc->sc_memsz)
   1088 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
   1089 }
   1090 
   1091 static void
   1092 radeonfb_map(struct radeonfb_softc *sc)
   1093 {
   1094 	if (!sc->sc_mapped) {
   1095 		if (bus_space_map(sc->sc_regt, sc->sc_regaddr, sc->sc_regsz, 0,
   1096 		    &sc->sc_regh) != 0) {
   1097 			aprint_error_dev(sc->sc_dev,
   1098 			    "unable to map registers!\n");
   1099 			return;
   1100 		}
   1101 		if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
   1102 		    BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE,
   1103 		    &sc->sc_memh) != 0) {
   1104 			sc->sc_memsz = 0;
   1105 			aprint_error_dev(sc->sc_dev,
   1106 			    "Unable to map frame buffer\n");
   1107 			return;
   1108 		}
   1109 		sc->sc_mapped = TRUE;
   1110 	}
   1111 }
   1112 
   1113 static void
   1114 radeonfb_unmap(struct radeonfb_softc *sc)
   1115 {
   1116 	if (!sc->sc_needs_unmap)
   1117 		return;
   1118 
   1119 	if (sc->sc_mapped) {
   1120 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
   1121 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
   1122 		sc->sc_mapped = FALSE;
   1123 	}
   1124 }
   1125 
   1126 static int
   1127 radeonfb_drm_print(void *aux, const char *pnp)
   1128 {
   1129 	if (pnp)
   1130 		aprint_normal("drm at %s", pnp);
   1131 	return (UNCONF);
   1132 }
   1133 
   1134 int
   1135 radeonfb_ioctl(void *v, void *vs,
   1136     unsigned long cmd, void *d, int flag, struct lwp *l)
   1137 {
   1138 	struct vcons_data	*vd;
   1139 	struct radeonfb_display	*dp;
   1140 	struct radeonfb_softc	*sc;
   1141 	struct wsdisplay_param  *param;
   1142 	struct vcons_screen 	*ms;
   1143 
   1144 	vd = (struct vcons_data *)v;
   1145 	ms = vd->active;
   1146 	dp = (struct radeonfb_display *)vd->cookie;
   1147 	sc = dp->rd_softc;
   1148 
   1149 	/* can't do these without registers being mapped */
   1150 	if (!sc->sc_mapped) {
   1151 		switch (cmd) {
   1152 			case WSDISPLAYIO_GVIDEO:
   1153 			case WSDISPLAYIO_SVIDEO:
   1154 			case WSDISPLAYIO_GETCMAP:
   1155 			case WSDISPLAYIO_PUTCMAP:
   1156 			case WSDISPLAYIO_SCURSOR:
   1157 			case WSDISPLAYIO_GCURPOS:
   1158 			case WSDISPLAYIO_SCURPOS:
   1159 			case WSDISPLAYIO_SETPARAM:
   1160 				return EINVAL;
   1161 		}
   1162 	}
   1163 
   1164 	switch (cmd) {
   1165 	case WSDISPLAYIO_GTYPE:
   1166 		*(unsigned *)d = WSDISPLAY_TYPE_PCIMISC;
   1167 		return 0;
   1168 
   1169 	case WSDISPLAYIO_GINFO:
   1170 		if (vd->active != NULL) {
   1171 			struct wsdisplay_fbinfo *fb;
   1172 			fb = (struct wsdisplay_fbinfo *)d;
   1173 			fb->width = dp->rd_virtx;
   1174 			fb->height = dp->rd_virty;
   1175 			fb->depth = dp->rd_bpp;
   1176 			fb->cmsize = 256;
   1177 			return 0;
   1178 		} else
   1179 			return ENODEV;
   1180 	case WSDISPLAYIO_GVIDEO:
   1181 		if (radeonfb_isblank(dp))
   1182 			*(unsigned *)d = WSDISPLAYIO_VIDEO_OFF;
   1183 		else
   1184 			*(unsigned *)d = WSDISPLAYIO_VIDEO_ON;
   1185 		return 0;
   1186 
   1187 	case WSDISPLAYIO_SVIDEO:
   1188 		if (dp->rd_wsmode != WSDISPLAYIO_MODE_MAPPED) {
   1189 			radeonfb_blank(dp,
   1190 			    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_OFF));
   1191 			radeonfb_switch_backlight(dp,
   1192 			    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_ON));
   1193 		}
   1194 		pmf_event_inject(NULL,
   1195 		    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_ON) ?
   1196 		     PMFE_DISPLAY_ON : PMFE_DISPLAY_OFF);
   1197 		return 0;
   1198 
   1199 	case WSDISPLAYIO_GETCMAP:
   1200 		if (dp->rd_bpp == 8)
   1201 			return radeonfb_getcmap(dp,
   1202 			    (struct wsdisplay_cmap *)d);
   1203 		return EINVAL;
   1204 
   1205 	case WSDISPLAYIO_PUTCMAP:
   1206 		if (dp->rd_bpp == 8)
   1207 			return radeonfb_putcmap(dp,
   1208 			    (struct wsdisplay_cmap *)d);
   1209 		return EINVAL;
   1210 
   1211 	case WSDISPLAYIO_LINEBYTES:
   1212 		*(unsigned *)d = dp->rd_stride;
   1213 		return 0;
   1214 
   1215 	case WSDISPLAYIO_SMODE:
   1216 		if (*(int *)d != dp->rd_wsmode) {
   1217 			dp->rd_wsmode = *(int *)d;
   1218 			if ((dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) ||
   1219 			    (dp->rd_wsmode == WSDISPLAYIO_MODE_DUMBFB))
   1220 				radeonfb_map(sc);
   1221 
   1222 			if ((dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) &&
   1223 			    (dp->rd_vd.active)) {
   1224 				radeonfb_engine_init(dp);
   1225 				glyphcache_wipe(&dp->rd_gc);
   1226 				radeonfb_init_palette(dp);
   1227 				radeonfb_modeswitch(dp);
   1228 				radeonfb_rectfill(dp, 0, 0, dp->rd_virtx,
   1229 				    dp->rd_virty, dp->rd_bg);
   1230 				vcons_redraw_screen(dp->rd_vd.active);
   1231 			}
   1232 			if (dp->rd_wsmode == WSDISPLAYIO_MODE_MAPPED)
   1233 				radeonfb_unmap(sc);
   1234 		}
   1235 		return 0;
   1236 
   1237 	case WSDISPLAYIO_GCURMAX:
   1238 		((struct wsdisplay_curpos *)d)->x = RADEON_CURSORMAXX;
   1239 		((struct wsdisplay_curpos *)d)->y = RADEON_CURSORMAXY;
   1240 		return 0;
   1241 
   1242 	case WSDISPLAYIO_SCURSOR:
   1243 		return radeonfb_set_cursor(dp, (struct wsdisplay_cursor *)d);
   1244 
   1245 	case WSDISPLAYIO_GCURSOR:
   1246 		return EPASSTHROUGH;
   1247 
   1248 	case WSDISPLAYIO_GCURPOS:
   1249 		((struct wsdisplay_curpos *)d)->x = dp->rd_cursor.rc_pos.x;
   1250 		((struct wsdisplay_curpos *)d)->y = dp->rd_cursor.rc_pos.y;
   1251 		return 0;
   1252 
   1253 	case WSDISPLAYIO_SCURPOS:
   1254 		return radeonfb_set_curpos(dp, (struct wsdisplay_curpos *)d);
   1255 
   1256 	case WSDISPLAYIO_SSPLASH:
   1257 #if defined(SPLASHSCREEN)
   1258 		if (*(int *)d == 1) {
   1259 			SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
   1260 			splash_render(&dp->rd_splash,
   1261 			    SPLASH_F_CENTER|SPLASH_F_FILL);
   1262 		} else
   1263 			SCREEN_ENABLE_DRAWING(&dp->rd_vscreen);
   1264 		return 0;
   1265 #else
   1266 		return ENODEV;
   1267 #endif
   1268 	case WSDISPLAYIO_GETPARAM:
   1269 		param = (struct wsdisplay_param *)d;
   1270 		switch (param->param) {
   1271 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
   1272 			param->min = 0;
   1273 			param->max = 255;
   1274 			param->curval = dp->rd_bl_level;
   1275 			return 0;
   1276 		case WSDISPLAYIO_PARAM_BACKLIGHT:
   1277 			param->min = 0;
   1278 			param->max = RADEONFB_BACKLIGHT_MAX;
   1279 			param->curval = dp->rd_bl_on;
   1280 			return 0;
   1281 		}
   1282 		return EPASSTHROUGH;
   1283 
   1284 	case WSDISPLAYIO_SETPARAM:
   1285 		param = (struct wsdisplay_param *)d;
   1286 		switch (param->param) {
   1287 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
   1288 			radeonfb_set_backlight(dp, param->curval);
   1289 			return 0;
   1290 		case WSDISPLAYIO_PARAM_BACKLIGHT:
   1291 			radeonfb_switch_backlight(dp,  param->curval);
   1292 			return 0;
   1293 		}
   1294 		return EPASSTHROUGH;
   1295 
   1296 	/* PCI config read/write passthrough. */
   1297 	case PCI_IOC_CFGREAD:
   1298 	case PCI_IOC_CFGWRITE:
   1299 		return pci_devioctl(sc->sc_pc, sc->sc_pt, cmd, d, flag, l);
   1300 
   1301 	case WSDISPLAYIO_GET_BUSID:
   1302 		return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc,
   1303 		    sc->sc_pt, d);
   1304 
   1305 	case WSDISPLAYIO_GET_EDID: {
   1306 		struct wsdisplayio_edid_info *ei = d;
   1307 		return wsdisplayio_get_edid(sc->sc_dev, ei);
   1308 	}
   1309 
   1310 	case WSDISPLAYIO_GET_FBINFO: {
   1311 		struct wsdisplayio_fbinfo *fbi = d;
   1312 		return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi);
   1313 	}
   1314 
   1315 	default:
   1316 		return EPASSTHROUGH;
   1317 	}
   1318 }
   1319 
   1320 paddr_t
   1321 radeonfb_mmap(void *v, void *vs, off_t offset, int prot)
   1322 {
   1323 	struct vcons_data	*vd;
   1324 	struct radeonfb_display	*dp;
   1325 	struct radeonfb_softc	*sc;
   1326 	paddr_t			pa;
   1327 
   1328 	vd = (struct vcons_data *)v;
   1329 	dp = (struct radeonfb_display *)vd->cookie;
   1330 	sc = dp->rd_softc;
   1331 
   1332 	if ((offset >= 0) && (offset < (dp->rd_virty * dp->rd_stride))) {
   1333 		pa = bus_space_mmap(sc->sc_memt,
   1334 		    sc->sc_memaddr + dp->rd_offset + offset, 0,
   1335 		    prot, BUS_SPACE_MAP_LINEAR);
   1336 		return pa;
   1337 	}
   1338 
   1339 	/*
   1340 	 * restrict all other mappings to processes with superuser privileges
   1341 	 * or the kernel itself
   1342 	 */
   1343 	if (kauth_authorize_machdep(kauth_cred_get(), KAUTH_MACHDEP_UNMANAGEDMEM,
   1344 	    NULL, NULL, NULL, NULL) != 0) {
   1345 		aprint_error_dev(sc->sc_dev, "mmap() rejected.\n");
   1346 		return -1;
   1347 	}
   1348 
   1349 	if ((offset >= sc->sc_regaddr) &&
   1350 	    (offset < sc->sc_regaddr + sc->sc_regsz)) {
   1351 		return bus_space_mmap(sc->sc_regt, offset, 0, prot,
   1352 		    BUS_SPACE_MAP_LINEAR);
   1353 	}
   1354 
   1355 	if ((offset >= sc->sc_memaddr) &&
   1356 	    (offset < sc->sc_memaddr + sc->sc_memsz)) {
   1357 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1358 		    BUS_SPACE_MAP_LINEAR);
   1359 	}
   1360 
   1361 	if ((offset >= sc->sc_romaddr) &&
   1362 	    (offset < sc->sc_romaddr + sc->sc_romsz)) {
   1363 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1364 		    BUS_SPACE_MAP_LINEAR);
   1365 	}
   1366 
   1367 #ifdef PCI_MAGIC_IO_RANGE
   1368 	/* allow mapping of IO space */
   1369 	if ((offset >= PCI_MAGIC_IO_RANGE) &&
   1370 	    (offset < PCI_MAGIC_IO_RANGE + 0x10000)) {
   1371 		pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE,
   1372 		    0, prot, 0);
   1373 		return pa;
   1374 	}
   1375 #endif /* PCI_MAGIC_IO_RANGE */
   1376 
   1377 	return -1;
   1378 }
   1379 
   1380 static void
   1381 radeonfb_loadbios(struct radeonfb_softc *sc, const struct pci_attach_args *pa)
   1382 {
   1383 	bus_space_tag_t		romt;
   1384 	bus_space_handle_t	romh, biosh;
   1385 	bus_size_t		romsz;
   1386 	bus_addr_t		ptr;
   1387 	uint32_t		busctl, crtcg, crtc2g = 0, viphctl, seprom, extc;
   1388 	int			bios_voodoo = 0;
   1389 
   1390 	if (pci_mapreg_map(pa, PCI_MAPREG_ROM, PCI_MAPREG_TYPE_ROM,
   1391 		BUS_SPACE_MAP_PREFETCHABLE, &romt, &romh, NULL, &romsz) != 0) {
   1392 		aprint_verbose("%s: unable to map BIOS!\n", XNAME(sc));
   1393 		return;
   1394 	}
   1395 
   1396 	pci_find_rom(pa, romt, romh, romsz, PCI_ROM_CODE_TYPE_X86, &biosh,
   1397 	    &sc->sc_biossz);
   1398 	if (sc->sc_biossz != 0) goto foundit;
   1399 
   1400 	aprint_verbose("trying to read disabled BIOS...\n");
   1401 
   1402 	bios_voodoo = 1;
   1403 	seprom = radeonfb_get32(sc, RADEON_SEPROM_CNTL1);
   1404 	radeonfb_put32(sc, RADEON_SEPROM_CNTL1,
   1405 	    (seprom & ~RADEON_SCK_PRESCALE_MASK) |
   1406 	    (0xc << RADEON_SCK_PRESCALE_SHIFT));
   1407 	viphctl = radeonfb_get32(sc, RADEON_VIPH_CONTROL);
   1408 	radeonfb_put32(sc, RADEON_VIPH_CONTROL, viphctl & ~RADEON_VIPH_EN);
   1409 	busctl = radeonfb_get32(sc, RADEON_BUS_CNTL);
   1410 	radeonfb_put32(sc, RADEON_BUS_CNTL, busctl & ~RADEON_BUS_BIOS_DIS_ROM);
   1411 	crtcg = radeonfb_get32(sc, RADEON_CRTC_GEN_CNTL);
   1412 	radeonfb_put32(sc, RADEON_CRTC_GEN_CNTL, ((crtcg & ~RADEON_CRTC_EN) |
   1413 				      (RADEON_CRTC_DISP_REQ_EN_B |
   1414 				       RADEON_CRTC_EXT_DISP_EN)));
   1415 	if (HAS_CRTC2(sc)) {
   1416 		crtc2g = radeonfb_get32(sc, RADEON_CRTC2_GEN_CNTL);
   1417 		radeonfb_put32(sc, RADEON_CRTC2_GEN_CNTL,
   1418 		    (crtc2g & ~RADEON_CRTC2_EN) |
   1419 		    RADEON_CRTC2_DISP_REQ_EN_B);
   1420 	}
   1421 	extc = radeonfb_get32(sc, RADEON_CRTC_EXT_CNTL);
   1422 	radeonfb_put32(sc, RADEON_CRTC_EXT_CNTL, (extc & ~RADEON_CRTC_CRT_ON) |
   1423 				      (RADEON_CRTC_SYNC_TRISTAT |
   1424 				       RADEON_CRTC_DISPLAY_DIS));
   1425 	pci_find_rom(pa, romt, romh, romsz, PCI_ROM_CODE_TYPE_X86, &biosh,
   1426 	    &sc->sc_biossz);
   1427 
   1428 foundit:
   1429 	if (sc->sc_biossz > 0) {
   1430 		sc->sc_bios = malloc(sc->sc_biossz, M_DEVBUF, M_WAITOK);
   1431 		bus_space_read_region_1(romt, biosh, 0, sc->sc_bios,
   1432 		    sc->sc_biossz);
   1433 	}
   1434 
   1435 	if (bios_voodoo != 0) {
   1436 		radeonfb_put32(sc, RADEON_CRTC_EXT_CNTL, extc);
   1437 		if (HAS_CRTC2(sc)) {
   1438 			radeonfb_put32(sc, RADEON_CRTC2_GEN_CNTL, crtc2g);
   1439 		}
   1440 		radeonfb_put32(sc, RADEON_CRTC_GEN_CNTL, crtcg);
   1441 		radeonfb_put32(sc, RADEON_BUS_CNTL, busctl);
   1442 		radeonfb_put32(sc, RADEON_VIPH_CONTROL, viphctl);
   1443 		radeonfb_put32(sc, RADEON_SEPROM_CNTL1, seprom);
   1444 	}
   1445 
   1446 	/* unmap the PCI expansion rom */
   1447 	bus_space_unmap(romt, romh, romsz);
   1448 
   1449 	/* turn off rom decoder now */
   1450 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM,
   1451 	    pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM) &
   1452 	    ~PCI_MAPREG_ROM_ENABLE);
   1453 
   1454 	if (sc->sc_biossz > 0) {
   1455 		ptr = GETBIOS16(sc, 0x48);
   1456 		if ((GETBIOS32(sc, ptr + 4) == 0x41544f4d /* "ATOM" */) ||
   1457 		    (GETBIOS32(sc, ptr + 4) == 0x4d4f5441 /* "MOTA" */)) {
   1458 			sc->sc_flags |= RFB_ATOM;
   1459 		}
   1460 
   1461 		aprint_verbose("%s: Found %d KB %s BIOS\n", XNAME(sc),
   1462 		    (unsigned)sc->sc_biossz >> 10,
   1463 		    IS_ATOM(sc) ? "ATOM" : "Legacy");
   1464 	}
   1465 }
   1466 
   1467 
   1468 uint32_t
   1469 radeonfb_get32(struct radeonfb_softc *sc, uint32_t reg)
   1470 {
   1471 
   1472 	return bus_space_read_4(sc->sc_regt, sc->sc_regh, reg);
   1473 }
   1474 
   1475 void
   1476 radeonfb_put32(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1477 {
   1478 
   1479 	bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, val);
   1480 }
   1481 
   1482 void
   1483 radeonfb_put32s(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1484 {
   1485 
   1486 	bus_space_write_stream_4(sc->sc_regt, sc->sc_regh, reg, val);
   1487 }
   1488 
   1489 void
   1490 radeonfb_mask32(struct radeonfb_softc *sc, uint32_t reg,
   1491     uint32_t andmask, uint32_t ormask)
   1492 {
   1493 	int		s;
   1494 	uint32_t	val;
   1495 
   1496 	s = splhigh();
   1497 	val = radeonfb_get32(sc, reg);
   1498 	val = (val & andmask) | ormask;
   1499 	radeonfb_put32(sc, reg, val);
   1500 	splx(s);
   1501 }
   1502 
   1503 uint32_t
   1504 radeonfb_getindex(struct radeonfb_softc *sc, uint32_t idx)
   1505 {
   1506 	int		s;
   1507 	uint32_t	val;
   1508 
   1509 	s = splhigh();
   1510 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1511 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1512 	splx(s);
   1513 
   1514 	return (val);
   1515 }
   1516 
   1517 void
   1518 radeonfb_putindex(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1519 {
   1520 	int	s;
   1521 
   1522 	s = splhigh();
   1523 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1524 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1525 	splx(s);
   1526 }
   1527 
   1528 void
   1529 radeonfb_maskindex(struct radeonfb_softc *sc, uint32_t idx,
   1530     uint32_t andmask, uint32_t ormask)
   1531 {
   1532 	int		s;
   1533 	uint32_t	val;
   1534 
   1535 	s = splhigh();
   1536 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1537 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1538 	val = (val & andmask) | ormask;
   1539 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1540 	splx(s);
   1541 }
   1542 
   1543 uint32_t
   1544 radeonfb_getpll(struct radeonfb_softc *sc, uint32_t idx)
   1545 {
   1546 	int		s;
   1547 	uint32_t	val;
   1548 
   1549 	s = splhigh();
   1550 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f));
   1551 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1552 	if (HAS_R300CG(sc))
   1553 		radeonfb_r300cg_workaround(sc);
   1554 	splx(s);
   1555 
   1556 	return (val);
   1557 }
   1558 
   1559 void
   1560 radeonfb_putpll(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1561 {
   1562 	int	s;
   1563 
   1564 	s = splhigh();
   1565 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1566 	    RADEON_PLL_WR_EN);
   1567 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1568 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1569 	splx(s);
   1570 }
   1571 
   1572 void
   1573 radeonfb_maskpll(struct radeonfb_softc *sc, uint32_t idx,
   1574     uint32_t andmask, uint32_t ormask)
   1575 {
   1576 	int		s;
   1577 	uint32_t	val;
   1578 
   1579 	s = splhigh();
   1580 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1581 		RADEON_PLL_WR_EN);
   1582 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1583 	val = (val & andmask) | ormask;
   1584 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1585 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1586 	splx(s);
   1587 }
   1588 
   1589 int
   1590 radeonfb_scratch_test(struct radeonfb_softc *sc, int reg, uint32_t v)
   1591 {
   1592 	uint32_t	saved;
   1593 
   1594 	saved = GET32(sc, reg);
   1595 	PUT32(sc, reg, v);
   1596 	if (GET32(sc, reg) != v) {
   1597 		return -1;
   1598 	}
   1599 	PUT32(sc, reg, saved);
   1600 	return 0;
   1601 }
   1602 
   1603 uintmax_t
   1604 radeonfb_getprop_num(struct radeonfb_softc *sc, const char *name,
   1605     uintmax_t defval)
   1606 {
   1607 	prop_number_t	pn;
   1608 	pn = prop_dictionary_get(device_properties(sc->sc_dev), name);
   1609 	if (pn == NULL) {
   1610 		return defval;
   1611 	}
   1612 	KASSERT(prop_object_type(pn) == PROP_TYPE_NUMBER);
   1613 	return prop_number_unsigned_value(pn);
   1614 }
   1615 
   1616 int
   1617 radeonfb_getclocks(struct radeonfb_softc *sc)
   1618 {
   1619 	bus_addr_t	ptr;
   1620 	int		refclk = 0;
   1621 	int		refdiv = 0;
   1622 	int		minpll = 0;
   1623 	int		maxpll = 0;
   1624 
   1625 	/* load initial property values if port/board provides them */
   1626 	refclk = radeonfb_getprop_num(sc, "refclk", 0) & 0xffff;
   1627 	refdiv = radeonfb_getprop_num(sc, "refdiv", 0) & 0xffff;
   1628 	minpll = radeonfb_getprop_num(sc, "minpll", 0) & 0xffffffffU;
   1629 	maxpll = radeonfb_getprop_num(sc, "maxpll", 0) & 0xffffffffU;
   1630 
   1631 	PRINTPLL(RADEON_PPLL_REF_DIV);
   1632 	PRINTPLL(RADEON_PPLL_DIV_0);
   1633 	PRINTPLL(RADEON_PPLL_DIV_1);
   1634 	PRINTPLL(RADEON_PPLL_DIV_2);
   1635 	PRINTPLL(RADEON_PPLL_DIV_3);
   1636 	PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   1637 	PRINTPLL(RADEON_P2PLL_REF_DIV);
   1638 	PRINTPLL(RADEON_P2PLL_DIV_0);
   1639 
   1640 	if (refclk && refdiv && minpll && maxpll)
   1641 		goto dontprobe;
   1642 
   1643 	if (!sc->sc_biossz) {
   1644 		/* no BIOS */
   1645 		aprint_verbose("%s: No video BIOS, using default clocks\n",
   1646 		    XNAME(sc));
   1647 		if (IS_IGP(sc))
   1648 			refclk = refclk ? refclk : 1432;
   1649 		else
   1650 			refclk = refclk ? refclk : 2700;
   1651 		refdiv = refdiv ? refdiv : 12;
   1652 		minpll = minpll ? minpll : 12500;
   1653 		/* XXX
   1654 		 * Need to check if the firmware or something programmed a
   1655 		 * higher value than this, and if so, bump it.
   1656 		 * The RV280 in my iBook is unhappy if the PLL input is less
   1657 		 * than 360MHz
   1658 		 */
   1659 		maxpll = maxpll ? maxpll : 40000/*35000*/;
   1660 	} else if (IS_ATOM(sc)) {
   1661 		/* ATOM BIOS */
   1662 		ptr = GETBIOS16(sc, 0x48);
   1663 		ptr = GETBIOS16(sc, ptr + 32);	/* aka MasterDataStart */
   1664 		ptr = GETBIOS16(sc, ptr + 12);	/* pll info block */
   1665 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 82);
   1666 		minpll = minpll ? minpll : GETBIOS16(sc, ptr + 78);
   1667 		maxpll = maxpll ? maxpll : GETBIOS16(sc, ptr + 32);
   1668 		/*
   1669 		 * ATOM BIOS doesn't supply a reference divider, so we
   1670 		 * have to probe for it.
   1671 		 */
   1672 		if (refdiv < 2)
   1673 			refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1674 			    RADEON_PPLL_REF_DIV_MASK;
   1675 		/*
   1676 		 * if probe is zero, just assume one that should work
   1677 		 * for most parts
   1678 		 */
   1679 		if (refdiv < 2)
   1680 			refdiv = 12;
   1681 
   1682 	} else {
   1683 		uint32_t tmp = GETPLL(sc, RADEON_PPLL_REF_DIV);
   1684 		/* Legacy BIOS */
   1685 		ptr = GETBIOS16(sc, 0x48);
   1686 		ptr = GETBIOS16(sc, ptr + 0x30);
   1687 		if (IS_R300(sc)) {
   1688 			refdiv = refdiv ? refdiv :
   1689 			    (tmp & R300_PPLL_REF_DIV_ACC_MASK) >>
   1690 			    R300_PPLL_REF_DIV_ACC_SHIFT;
   1691 		} else {
   1692 			refdiv = refdiv ? refdiv :
   1693 			    tmp & RADEON_PPLL_REF_DIV_MASK;
   1694 		}
   1695 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 0x0E);
   1696 		refdiv = refdiv ? refdiv : GETBIOS16(sc, ptr + 0x10);
   1697 		minpll = minpll ? minpll : GETBIOS32(sc, ptr + 0x12);
   1698 		maxpll = maxpll ? maxpll : GETBIOS32(sc, ptr + 0x16);
   1699 	}
   1700 
   1701 
   1702 dontprobe:
   1703 	sc->sc_refclk = refclk * 10;
   1704 	sc->sc_refdiv = refdiv;
   1705 	sc->sc_minpll = minpll * 10;
   1706 	sc->sc_maxpll = maxpll * 10;
   1707 	return 0;
   1708 }
   1709 
   1710 int
   1711 radeonfb_calc_dividers(struct radeonfb_softc *sc, uint32_t dotclock,
   1712     uint32_t *postdivbit, uint32_t *feedbackdiv, int flags)
   1713 {
   1714 	int		i;
   1715 	uint32_t	outfreq;
   1716 	int		div;
   1717 
   1718 	DPRINTF(("dot clock: %u\n", dotclock));
   1719 	for (i = 0; (div = radeonfb_dividers[i].divider) != 0; i++) {
   1720 
   1721 		if ((flags & NO_ODD_FBDIV) && ((div & 1) != 0))
   1722 			continue;
   1723 
   1724 		/*
   1725 		 * XXX
   1726 		 * the rv350 in my last generation 14" iBook G4 produces
   1727 		 * garbage with dividers > 4. No idea if this is a hardware
   1728 		 * limitation or an error in the divider table.
   1729 		 */
   1730 		if ((sc->sc_family == RADEON_RV350) && (div > 4))
   1731 			continue;
   1732 
   1733 		outfreq = div * dotclock;
   1734 		if ((outfreq >= sc->sc_minpll) &&
   1735 		    (outfreq <= sc->sc_maxpll)) {
   1736 			DPRINTF(("outfreq: %u\n", outfreq));
   1737 			*postdivbit =
   1738 			    ((uint32_t)radeonfb_dividers[i].mask << 16);
   1739 			DPRINTF(("post divider: %d (mask %x)\n", div,
   1740 				    *postdivbit));
   1741 			break;
   1742 		}
   1743 	}
   1744 
   1745 	if (div == 0)
   1746 		return 1;
   1747 
   1748 	*feedbackdiv = DIVIDE(sc->sc_refdiv * outfreq, sc->sc_refclk);
   1749 	DPRINTF(("feedback divider: %d\n", *feedbackdiv));
   1750 	return 0;
   1751 }
   1752 
   1753 #if 0
   1754 #ifdef RADEONFB_DEBUG
   1755 static void
   1756 dump_buffer(const char *pfx, void *buffer, unsigned int size)
   1757 {
   1758 	char		asc[17];
   1759 	unsigned	ptr = (unsigned)buffer;
   1760 	char		*start = (char *)(ptr & ~0xf);
   1761 	char		*end = (char *)(ptr + size);
   1762 
   1763 	end = (char *)(((unsigned)end + 0xf) & ~0xf);
   1764 
   1765 	if (pfx == NULL) {
   1766 		pfx = "";
   1767 	}
   1768 
   1769 	while (start < end) {
   1770 		unsigned offset = (unsigned)start & 0xf;
   1771 		if (offset == 0) {
   1772 			printf("%s%x: ", pfx, (unsigned)start);
   1773 		}
   1774 		if (((unsigned)start < ptr) ||
   1775 		    ((unsigned)start >= (ptr + size))) {
   1776 			printf("  ");
   1777 			asc[offset] = ' ';
   1778 		} else {
   1779 			printf("%02x", *(unsigned char *)start);
   1780 			if ((*start >= ' ') && (*start <= '~')) {
   1781 				asc[offset] = *start;
   1782 			} else {
   1783 				asc[offset] = '.';
   1784 			}
   1785 		}
   1786 		asc[offset + 1] = 0;
   1787 		if (offset % 2) {
   1788 			printf(" ");
   1789 		}
   1790 		if (offset == 15) {
   1791 			printf(" %s\n", asc);
   1792 		}
   1793 		start++;
   1794 	}
   1795 }
   1796 #endif
   1797 #endif
   1798 
   1799 int
   1800 radeonfb_getconnectors(struct radeonfb_softc *sc)
   1801 {
   1802 	int	i;
   1803 	int	found = 0;
   1804 
   1805 	for (i = 0; i < 2; i++) {
   1806 		sc->sc_ports[i].rp_mon_type = RADEON_MT_UNKNOWN;
   1807 		sc->sc_ports[i].rp_ddc_type = RADEON_DDC_NONE;
   1808 		sc->sc_ports[i].rp_dac_type = RADEON_DAC_UNKNOWN;
   1809 		sc->sc_ports[i].rp_conn_type = RADEON_CONN_NONE;
   1810 		sc->sc_ports[i].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1811 	}
   1812 
   1813 	/*
   1814 	 * This logic is borrowed from Xorg's radeon driver.
   1815 	 */
   1816 	if (!sc->sc_biossz)
   1817 		goto nobios;
   1818 
   1819 	if (IS_ATOM(sc)) {
   1820 		/* not done yet */
   1821 	} else {
   1822 		uint16_t	ptr;
   1823 		int		port = 0;
   1824 
   1825 		ptr = GETBIOS16(sc, 0x48);
   1826 		ptr = GETBIOS16(sc, ptr + 0x50);
   1827 		for (i = 1; i < 4; i++) {
   1828 			uint16_t	entry;
   1829 			uint8_t		conn, ddc, dac, tmds;
   1830 
   1831 			/*
   1832 			 * Parse the connector table.  From reading the code,
   1833 			 * it appears to made up of 16-bit entries for each
   1834 			 * connector.  The 16-bits are defined as:
   1835 			 *
   1836 			 * bits 12-15	- connector type (0 == end of table)
   1837 			 * bits 8-11	- DDC type
   1838 			 * bits 5-7	- ???
   1839 			 * bit 4	- TMDS type (1 = EXT, 0 = INT)
   1840 			 * bits 1-3	- ???
   1841 			 * bit 0	- DAC, 1 = TVDAC, 0 = primary
   1842 			 */
   1843 			if (!GETBIOS8(sc, ptr + i * 2) && i > 1)
   1844 				break;
   1845 			entry = GETBIOS16(sc, ptr + i * 2);
   1846 
   1847 			conn = (entry >> 12) & 0xf;
   1848 			ddc = (entry >> 8) & 0xf;
   1849 			dac = (entry & 0x1) ? RADEON_DAC_TVDAC :
   1850 			    RADEON_DAC_PRIMARY;
   1851 			tmds = ((entry >> 4) & 0x1) ? RADEON_TMDS_EXT :
   1852 			    RADEON_TMDS_INT;
   1853 
   1854 			if (conn == RADEON_CONN_NONE)
   1855 				continue;	/* no connector */
   1856 
   1857 			/*
   1858 			 * XXX
   1859 			 * both Mac Mini variants have both outputs wired to
   1860 			 * the same connector and share the DDC lines
   1861 			 */
   1862 			if ((found > 0) &&
   1863 			    (sc->sc_ports[port].rp_ddc_type == ddc)) {
   1864 				/* duplicate entry for same connector */
   1865 				continue;
   1866 			}
   1867 
   1868 			/* internal DDC_DVI port gets priority */
   1869 			if ((ddc == RADEON_DDC_DVI) || (port == 1))
   1870 				port = 0;
   1871 			else
   1872 				port = 1;
   1873 
   1874 			sc->sc_ports[port].rp_ddc_type =
   1875 			    ddc > RADEON_DDC_CRT2 ? RADEON_DDC_NONE : ddc;
   1876 			sc->sc_ports[port].rp_dac_type = dac;
   1877 			sc->sc_ports[port].rp_conn_type =
   1878 			    uimin(conn, RADEON_CONN_UNSUPPORTED) ;
   1879 
   1880 			sc->sc_ports[port].rp_tmds_type = tmds;
   1881 
   1882 			if ((conn != RADEON_CONN_DVI_I) &&
   1883 			    (conn != RADEON_CONN_DVI_D) &&
   1884 			    (tmds == RADEON_TMDS_INT))
   1885 				sc->sc_ports[port].rp_tmds_type =
   1886 				    RADEON_TMDS_UNKNOWN;
   1887 			sc->sc_ports[port].rp_number = i - 1;
   1888 
   1889 			found += (port + 1);
   1890 		}
   1891 	}
   1892 
   1893 nobios:
   1894 	if (!found) {
   1895 		bool dvi_ext = FALSE, dvi_int = FALSE;
   1896 		DPRINTF(("No connector info in BIOS!\n"));
   1897 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
   1898 		    "dvi-internal", &dvi_int);
   1899 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
   1900 		    "dvi-external", &dvi_ext);
   1901 		if (dvi_ext) {
   1902 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1903 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_CRT2;
   1904 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1905 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_I;
   1906 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_EXT;	/* output to fp2 */
   1907 			sc->sc_ports[0].rp_number = 0;
   1908 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1909 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_NONE;
   1910 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_UNKNOWN;
   1911 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_NONE;
   1912 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1913 			sc->sc_ports[1].rp_number = 1;
   1914 		} else	if (dvi_int) {
   1915 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1916 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_CRT2;
   1917 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1918 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_I;
   1919 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1920 			sc->sc_ports[0].rp_number = 0;
   1921 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1922 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_NONE;
   1923 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_UNKNOWN;
   1924 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_NONE;
   1925 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1926 			sc->sc_ports[1].rp_number = 1;
   1927 		} else if IS_MOBILITY(sc) {
   1928 			/* default, port 0 = internal TMDS, port 1 = CRT */
   1929 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1930 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1931 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1932 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1933 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1934 			sc->sc_ports[0].rp_number = 0;
   1935 
   1936 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1937 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1938 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1939 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1940 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_EXT;
   1941 			sc->sc_ports[1].rp_number = 1;
   1942 		} else {
   1943 			/* default, port 0 = DVI, port 1 = CRT */
   1944 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1945 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1946 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1947 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1948 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1949 			sc->sc_ports[0].rp_number = 0;
   1950 
   1951 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1952 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1953 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1954 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1955 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1956 			sc->sc_ports[1].rp_number = 1;
   1957 		}
   1958 	}
   1959 
   1960 	/*
   1961 	 * Fixup for RS300/RS350/RS400 chips, that lack a primary DAC.
   1962 	 * these chips should use TVDAC for the VGA port.
   1963 	 */
   1964 	if (HAS_SDAC(sc)) {
   1965 		if (sc->sc_ports[0].rp_conn_type == RADEON_CONN_CRT) {
   1966 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1967 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1968 		} else {
   1969 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_TVDAC;
   1970 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1971 		}
   1972 	} else if (!HAS_CRTC2(sc)) {
   1973 		sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1974 	}
   1975 
   1976 	for (i = 0; i < 2; i++) {
   1977 		char	edid[128], edid_port_str[7] = "EDID:";
   1978 		uint8_t	ddc;
   1979 		struct edid_info *eip = &sc->sc_ports[i].rp_edid;
   1980 		prop_data_t edid_data;
   1981 
   1982 		DPRINTF(("Port #%d:\n", i));
   1983 		DPRINTF(("   conn = %d\n", sc->sc_ports[i].rp_conn_type));
   1984 		DPRINTF(("    ddc = %d\n", sc->sc_ports[i].rp_ddc_type));
   1985 		DPRINTF(("    dac = %d\n", sc->sc_ports[i].rp_dac_type));
   1986 		DPRINTF(("   tmds = %d\n", sc->sc_ports[i].rp_tmds_type));
   1987 		DPRINTF(("   crtc = %d\n", sc->sc_ports[i].rp_number));
   1988 
   1989 		sc->sc_ports[i].rp_edid_valid = 0;
   1990 		/*
   1991 		 * First look for static EDID data
   1992 		 * Try "EDID:port" then "EDID"
   1993 		 */
   1994 		snprintf(&edid_port_str[5], 2, "%d", i);
   1995 		edid_data = prop_dictionary_get(device_properties(
   1996 		    sc->sc_dev), edid_port_str);
   1997 		if (edid_data == NULL)
   1998 			edid_data = prop_dictionary_get(device_properties(
   1999 			      sc->sc_dev), "EDID");
   2000 		if (edid_data != NULL) {
   2001 			aprint_debug_dev(sc->sc_dev, "using static EDID\n");
   2002 			memcpy(edid, prop_data_value(edid_data), 128);
   2003 			if (edid_parse(edid, eip) == 0) {
   2004 
   2005 				sc->sc_ports[i].rp_edid_valid = 1;
   2006 #ifdef RADEONFB_DEBUG
   2007 					edid_print(eip);
   2008 #endif
   2009 			}
   2010 		}
   2011 		/* if we didn't find any we'll try to talk to the monitor */
   2012 		if (sc->sc_ports[i].rp_edid_valid != 1) {
   2013 
   2014 			ddc = sc->sc_ports[i].rp_ddc_type;
   2015 			if (ddc != RADEON_DDC_NONE) {
   2016 				if ((radeonfb_i2c_read_edid(sc, ddc, edid)
   2017 				    == 0) && (edid_parse(edid, eip) == 0)) {
   2018 
   2019 					sc->sc_ports[i].rp_edid_valid = 1;
   2020 #ifdef RADEONFB_DEBUG
   2021 					edid_print(eip);
   2022 #endif
   2023 				}
   2024 			}
   2025 		}
   2026 	}
   2027 
   2028 	return found;
   2029 }
   2030 
   2031 int
   2032 radeonfb_gettmds(struct radeonfb_softc *sc)
   2033 {
   2034 	int	i;
   2035 
   2036 	if (!sc->sc_biossz) {
   2037 		goto nobios;
   2038 	}
   2039 
   2040 	if (IS_ATOM(sc)) {
   2041 		/* XXX: not done yet */
   2042 	} else {
   2043 		uint16_t	ptr;
   2044 		int		n;
   2045 
   2046 		ptr = GETBIOS16(sc, 0x48);
   2047 		ptr = GETBIOS16(sc, ptr + 0x34);
   2048 		DPRINTF(("DFP table revision %d\n", GETBIOS8(sc, ptr)));
   2049 		if (GETBIOS8(sc, ptr) == 3) {
   2050 			/* revision three table */
   2051 			n = GETBIOS8(sc, ptr + 5) + 1;
   2052 			n = uimin(n, 4);
   2053 
   2054 			memset(sc->sc_tmds_pll, 0, sizeof (sc->sc_tmds_pll));
   2055 			for (i = 0; i < n; i++) {
   2056 				sc->sc_tmds_pll[i].rtp_pll = GETBIOS32(sc,
   2057 				    ptr + i * 10 + 8);
   2058 				sc->sc_tmds_pll[i].rtp_freq = GETBIOS16(sc,
   2059 				    ptr + i * 10 + 0x10);
   2060 				DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   2061 					    sc->sc_tmds_pll[i].rtp_freq,
   2062 					    sc->sc_tmds_pll[i].rtp_pll));
   2063 			}
   2064 			return 0;
   2065 		}
   2066 	}
   2067 
   2068 nobios:
   2069 	DPRINTF(("no suitable DFP table present\n"));
   2070 	for (i = 0;
   2071 	     i < sizeof (radeonfb_tmds_pll) / sizeof (radeonfb_tmds_pll[0]);
   2072 	     i++) {
   2073 		int	j;
   2074 
   2075 		if (radeonfb_tmds_pll[i].family != sc->sc_family)
   2076 			continue;
   2077 
   2078 		for (j = 0; j < 4; j++) {
   2079 			sc->sc_tmds_pll[j] = radeonfb_tmds_pll[i].plls[j];
   2080 			DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   2081 				    sc->sc_tmds_pll[j].rtp_freq,
   2082 				    sc->sc_tmds_pll[j].rtp_pll));
   2083 		}
   2084 		return 0;
   2085 	}
   2086 
   2087 	return -1;
   2088 }
   2089 
   2090 const struct videomode *
   2091 radeonfb_modelookup(const char *name)
   2092 {
   2093 	int	i;
   2094 	/* Use a default mode in case we don't find a matching mode */
   2095 	const char *vm = "1024x768x60";
   2096 	const struct videomode *vmp = NULL;
   2097 
   2098 	for (i = 0; i < videomode_count; i++) {
   2099 		if (!strcmp(name, videomode_list[i].name))
   2100 			return &videomode_list[i];
   2101 		if (!strcmp(vm, videomode_list[i].name))
   2102 			vmp = &videomode_list[i];
   2103 	}
   2104 	return vmp;
   2105 }
   2106 
   2107 void
   2108 radeonfb_pllwriteupdate(struct radeonfb_softc *sc, int crtc)
   2109 {
   2110 	if (crtc) {
   2111 		while (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   2112 		    RADEON_P2PLL_ATOMIC_UPDATE_R);
   2113 		SETPLL(sc, RADEON_P2PLL_REF_DIV, RADEON_P2PLL_ATOMIC_UPDATE_W);
   2114 	} else {
   2115 		while (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   2116 		    RADEON_PPLL_ATOMIC_UPDATE_R);
   2117 		SETPLL(sc, RADEON_PPLL_REF_DIV, RADEON_PPLL_ATOMIC_UPDATE_W);
   2118 	}
   2119 }
   2120 
   2121 void
   2122 radeonfb_pllwaitatomicread(struct radeonfb_softc *sc, int crtc)
   2123 {
   2124 	int	i;
   2125 
   2126 	for (i = 10000; i; i--) {
   2127 		if (crtc) {
   2128 			if (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   2129 			    RADEON_P2PLL_ATOMIC_UPDATE_R)
   2130 				break;
   2131 		} else {
   2132 			if (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   2133 			    RADEON_PPLL_ATOMIC_UPDATE_R)
   2134 				break;
   2135 		}
   2136 	}
   2137 }
   2138 
   2139 void
   2140 radeonfb_program_vclk(struct radeonfb_softc *sc, int dotclock, int crtc, int flags)
   2141 {
   2142 	uint32_t	pbit = 0;
   2143 	uint32_t	feed = 0;
   2144 	uint32_t	data, refdiv, div0, r2xxref;
   2145 
   2146 	radeonfb_calc_dividers(sc, dotclock, &pbit, &feed, flags);
   2147 
   2148 	if (crtc == 0) {
   2149 
   2150 		refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV);
   2151 
   2152 		/*
   2153 		 * XXX
   2154 		 * the RV350 in my last generation iBook G4 behaves like an
   2155 		 * r2xx here - try to detect that and not screw up the reference
   2156 		 * divider.
   2157 		 * xf86-video-radeon just skips PLL programming altogether
   2158 		 * on iBooks, probably for this reason.
   2159 		 */
   2160 		r2xxref = (refdiv & ~RADEON_PPLL_REF_DIV_MASK) | sc->sc_refdiv;
   2161 		if (IS_R300(sc) && (r2xxref != refdiv)) {
   2162 			refdiv = (refdiv & ~R300_PPLL_REF_DIV_ACC_MASK) |
   2163 			    (sc->sc_refdiv << R300_PPLL_REF_DIV_ACC_SHIFT);
   2164 		} else {
   2165 			refdiv = (refdiv & ~RADEON_PPLL_REF_DIV_MASK) |
   2166 			    sc->sc_refdiv;
   2167 		}
   2168 		DPRINTF(("refdiv %08x\n", refdiv));
   2169 		div0 = GETPLL(sc, RADEON_PPLL_DIV_0);
   2170 		DPRINTF(("div0 %08x\n", div0));
   2171 		div0 &= ~(RADEON_PPLL_FB3_DIV_MASK |
   2172 		    RADEON_PPLL_POST3_DIV_MASK);
   2173 		div0 |= pbit;
   2174 		div0 |= (feed & RADEON_PPLL_FB3_DIV_MASK);
   2175 		DPRINTF(("div0 %08x\n", div0));
   2176 
   2177 		if ((refdiv == GETPLL(sc, RADEON_PPLL_REF_DIV)) &&
   2178 		    (div0 == GETPLL(sc, RADEON_PPLL_DIV_0))) {
   2179 			/*
   2180 			 * nothing to do here, the PLL is already where we
   2181 			 * want it
   2182 			 */
   2183 			PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   2184 			    ~RADEON_PLL_DIV_SEL);
   2185 			aprint_debug_dev(sc->sc_dev, "no need to touch the PLL\n");
   2186 			return;
   2187 		}
   2188 
   2189 		/* alright, we do need to reprogram stuff */
   2190 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   2191 		    RADEON_VCLK_SRC_SEL_CPUCLK,
   2192 		    ~RADEON_VCLK_SRC_SEL_MASK);
   2193 
   2194 		/* put vclk into reset, use atomic updates */
   2195 		SETPLL(sc, RADEON_PPLL_CNTL,
   2196 		    RADEON_PPLL_REFCLK_SEL |
   2197 		    RADEON_PPLL_FBCLK_SEL |
   2198 		    RADEON_PPLL_RESET |
   2199 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   2200 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   2201 
   2202 		/* select clock 0 */
   2203 		PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   2204 		    ~RADEON_PLL_DIV_SEL);
   2205 
   2206 		PUTPLL(sc, RADEON_PPLL_REF_DIV, refdiv);
   2207 
   2208 		/* xf86-video-radeon does this, not sure why */
   2209 		PUTPLL(sc, RADEON_PPLL_DIV_0, div0);
   2210 		PUTPLL(sc, RADEON_PPLL_DIV_0, div0);
   2211 
   2212 		/* use the atomic update */
   2213 		radeonfb_pllwriteupdate(sc, crtc);
   2214 
   2215 		/* and wait for it to complete */
   2216 		radeonfb_pllwaitatomicread(sc, crtc);
   2217 
   2218 		/* program HTOTAL (why?) */
   2219 		PUTPLL(sc, RADEON_HTOTAL_CNTL, 0);
   2220 
   2221 		/* drop reset */
   2222 		CLRPLL(sc, RADEON_PPLL_CNTL,
   2223 		    RADEON_PPLL_RESET | RADEON_PPLL_SLEEP |
   2224 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   2225 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   2226 
   2227 		PRINTPLL(RADEON_PPLL_CNTL);
   2228 		PRINTPLL(RADEON_PPLL_REF_DIV);
   2229 		PRINTPLL(RADEON_PPLL_DIV_3);
   2230 
   2231 		/* give clock time to lock */
   2232 		delay(50000);
   2233 
   2234 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   2235 		    RADEON_VCLK_SRC_SEL_PPLLCLK,
   2236 		    ~RADEON_VCLK_SRC_SEL_MASK);
   2237 
   2238 	} else {
   2239 
   2240 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   2241 		    RADEON_PIX2CLK_SRC_SEL_CPUCLK,
   2242 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   2243 
   2244 		/* put vclk into reset, use atomic updates */
   2245 		SETPLL(sc, RADEON_P2PLL_CNTL,
   2246 		    RADEON_P2PLL_RESET |
   2247 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   2248 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   2249 
   2250 		/* program reference divider */
   2251 		PATCHPLL(sc, RADEON_P2PLL_REF_DIV, sc->sc_refdiv,
   2252 		    ~RADEON_P2PLL_REF_DIV_MASK);
   2253 
   2254 		/* program feedback and post dividers */
   2255 		data = GETPLL(sc, RADEON_P2PLL_DIV_0);
   2256 		data &= ~(RADEON_P2PLL_FB0_DIV_MASK |
   2257 		    RADEON_P2PLL_POST0_DIV_MASK);
   2258 		data |= pbit;
   2259 		data |= (feed & RADEON_P2PLL_FB0_DIV_MASK);
   2260 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   2261 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   2262 
   2263 		PRINTPLL(RADEON_P2PLL_REF_DIV);
   2264 		PRINTPLL(RADEON_P2PLL_DIV_0);
   2265 
   2266 		/* use the atomic update */
   2267 		radeonfb_pllwriteupdate(sc, crtc);
   2268 
   2269 		/* and wait for it to complete */
   2270 		radeonfb_pllwaitatomicread(sc, crtc);
   2271 
   2272 		/* program HTOTAL (why?) */
   2273 		PUTPLL(sc, RADEON_HTOTAL2_CNTL, 0);
   2274 
   2275 		/* drop reset */
   2276 		CLRPLL(sc, RADEON_P2PLL_CNTL,
   2277 		    RADEON_P2PLL_RESET | RADEON_P2PLL_SLEEP |
   2278 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   2279 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   2280 
   2281 		/* allow time for clock to lock */
   2282 		delay(50000);
   2283 
   2284 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   2285 		    RADEON_PIX2CLK_SRC_SEL_P2PLLCLK,
   2286 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   2287 	}
   2288 	PRINTREG(RADEON_CRTC_MORE_CNTL);
   2289 }
   2290 
   2291 void
   2292 radeonfb_modeswitch(struct radeonfb_display *dp)
   2293 {
   2294 	struct radeonfb_softc	*sc = dp->rd_softc;
   2295 	int			i;
   2296 
   2297 	if (IS_AVIVO(sc)) {
   2298 		/*
   2299 		 * no actual mode setting yet, we just make sure the CRTCs
   2300 		 * point at the right memory ranges and use the same pitch
   2301 		 * for the drawing engine
   2302 		 */
   2303 		if (GET32(sc, AVIVO_D1CRTC_CONTROL) & AVIVO_CRTC_EN) {
   2304 			CLR32(sc, AVIVO_D1GRPH_CONTROL, AVIVO_D1GRPH_MACRO_ADDRESS_MODE);
   2305 			dp->rd_stride = GET32(sc, AVIVO_D1GRPH_PITCH);
   2306 			PUT32(sc, AVIVO_D1GRPH_PRIMARY_SURFACE_ADDRESS, 0);
   2307 		}
   2308 		if (GET32(sc, AVIVO_D2CRTC_CONTROL) & AVIVO_CRTC_EN) {
   2309 			CLR32(sc, AVIVO_D2GRPH_CONTROL, AVIVO_D1GRPH_MACRO_ADDRESS_MODE);
   2310 			dp->rd_stride = GET32(sc, AVIVO_D2GRPH_PITCH);
   2311 			PUT32(sc, AVIVO_D2GRPH_PRIMARY_SURFACE_ADDRESS, 0);
   2312 		}
   2313 		return;
   2314 	}
   2315 
   2316 	/* blank the display while we switch modes */
   2317 	//radeonfb_blank(dp, 1);
   2318 
   2319 #if 0
   2320 	SET32(sc, RADEON_CRTC_EXT_CNTL,
   2321 	    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2322 	    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2323 #endif
   2324 
   2325 	/* these registers might get in the way... */
   2326 	PUT32(sc, RADEON_OVR_CLR, 0);
   2327 	PUT32(sc, RADEON_OVR_WID_LEFT_RIGHT, 0);
   2328 	PUT32(sc, RADEON_OVR_WID_TOP_BOTTOM, 0);
   2329 	PUT32(sc, RADEON_OV0_SCALE_CNTL, 0);
   2330 	PUT32(sc, RADEON_SUBPIC_CNTL, 0);
   2331 	PUT32(sc, RADEON_VIPH_CONTROL, 0);
   2332 	PUT32(sc, RADEON_I2C_CNTL_1, 0);
   2333 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2334 	PUT32(sc, RADEON_CAP0_TRIG_CNTL, 0);
   2335 	PUT32(sc, RADEON_CAP1_TRIG_CNTL, 0);
   2336 
   2337 	for (i = 0; i < dp->rd_ncrtcs; i++)
   2338 		radeonfb_setcrtc(dp, i);
   2339 
   2340 #if 0
   2341 	/*
   2342 	 * DVO chip voodoo from xf86-video-radeon
   2343 	 * apparently this is needed for some powerbooks with DVI outputs
   2344 	 */
   2345 
   2346 	uint8_t data[5][2] = {{0x8, 0x030}, {0x9, 0}, {0xa, 0x90}, {0xc, 0x89}, {0x8, 0x3b}};
   2347 	int n = 0;
   2348 	iic_acquire_bus(&sc->sc_i2c[0].ric_controller, 0);
   2349 	for (i = 0; i < 5; i++)
   2350 		n += iic_exec(&sc->sc_i2c[0].ric_controller, I2C_OP_WRITE, 0x38, data[i], 2, NULL, 0, 0);
   2351 	iic_release_bus(&sc->sc_i2c[0].ric_controller, 0);
   2352 	printf("n = %d\n", n);
   2353 #endif
   2354 
   2355 	/* activate the display */
   2356 	radeonfb_blank(dp, 0);
   2357 }
   2358 
   2359 void
   2360 radeonfb_setcrtc(struct radeonfb_display *dp, int index)
   2361 {
   2362 	int			crtc, flags = 0;
   2363 	struct videomode	*mode;
   2364 	struct radeonfb_softc	*sc;
   2365 	struct radeonfb_crtc	*cp;
   2366 	uint32_t		v, hd, vd;
   2367 	uint32_t		gencntl;
   2368 	uint32_t		htotaldisp;
   2369 	uint32_t		hsyncstrt;
   2370 	uint32_t		vtotaldisp;
   2371 	uint32_t		vsyncstrt;
   2372 	uint32_t		fphsyncstrt;
   2373 	uint32_t		fpvsyncstrt;
   2374 	uint32_t		fphtotaldisp;
   2375 	uint32_t		fpvtotaldisp;
   2376 	uint32_t		pitch;
   2377 
   2378 	sc = dp->rd_softc;
   2379 
   2380 	if ((sc->sc_ports[index].rp_tmds_type == RADEON_TMDS_INT) ||
   2381 	    (sc->sc_ports[index].rp_tmds_type == RADEON_TMDS_EXT)) {
   2382 		flags |= NO_ODD_FBDIV;
   2383 	}
   2384 
   2385 	cp = &dp->rd_crtcs[index];
   2386 	crtc = cp->rc_number;
   2387 	mode = &cp->rc_videomode;
   2388 
   2389 #if 1
   2390 	pitch = dp->rd_stride / dp->rd_bpp;
   2391 #else
   2392 	pitch = (((sc->sc_maxx * sc->sc_maxbpp) + ((sc->sc_maxbpp * 8) - 1)) /
   2393 	    (sc->sc_maxbpp * 8));
   2394 #endif
   2395 	switch (crtc) {
   2396 	case 0:
   2397 		gencntl = RADEON_CRTC_GEN_CNTL;
   2398 		htotaldisp = RADEON_CRTC_H_TOTAL_DISP;
   2399 		hsyncstrt = RADEON_CRTC_H_SYNC_STRT_WID;
   2400 		vtotaldisp = RADEON_CRTC_V_TOTAL_DISP;
   2401 		vsyncstrt = RADEON_CRTC_V_SYNC_STRT_WID;
   2402 		/* should probably leave those alone on non-LVDS */
   2403 		fpvsyncstrt = RADEON_FP_V_SYNC_STRT_WID;
   2404 		fphsyncstrt = RADEON_FP_H_SYNC_STRT_WID;
   2405 		fpvtotaldisp = RADEON_FP_CRTC_V_TOTAL_DISP;
   2406 		fphtotaldisp = RADEON_FP_CRTC_H_TOTAL_DISP;
   2407 		break;
   2408 	case 1:
   2409 		gencntl = RADEON_CRTC2_GEN_CNTL;
   2410 		htotaldisp = RADEON_CRTC2_H_TOTAL_DISP;
   2411 		hsyncstrt = RADEON_CRTC2_H_SYNC_STRT_WID;
   2412 		vtotaldisp = RADEON_CRTC2_V_TOTAL_DISP;
   2413 		vsyncstrt = RADEON_CRTC2_V_SYNC_STRT_WID;
   2414 		fpvsyncstrt = RADEON_FP_V2_SYNC_STRT_WID;
   2415 		fphsyncstrt = RADEON_FP_H2_SYNC_STRT_WID;
   2416 		/* XXX these registers don't seem to exist */
   2417 		fpvtotaldisp = 0;//RADEON_FP_CRTC2_V_TOTAL_DISP;
   2418 		fphtotaldisp = 0;//RADEON_FP_CRTC2_H_TOTAL_DISP;
   2419 		break;
   2420 	default:
   2421 		panic("Bad CRTC!");
   2422 		break;
   2423 	}
   2424 
   2425 	/*
   2426 	 * CRTC_GEN_CNTL - depth, accelerator mode, etc.
   2427 	 */
   2428 	/* only bother with 32bpp and 8bpp */
   2429 	v = dp->rd_format << RADEON_CRTC_PIX_WIDTH_SHIFT;
   2430 
   2431 	if (crtc == 1) {
   2432 		v |= RADEON_CRTC2_CRT2_ON | RADEON_CRTC2_EN;
   2433 	} else {
   2434 		v |= RADEON_CRTC_EXT_DISP_EN | RADEON_CRTC_EN;
   2435 	}
   2436 
   2437 	if (mode->flags & VID_DBLSCAN)
   2438 		v |= RADEON_CRTC2_DBL_SCAN_EN;
   2439 
   2440 	if (mode->flags & VID_INTERLACE)
   2441 		v |= RADEON_CRTC2_INTERLACE_EN;
   2442 
   2443 	if (mode->flags & VID_CSYNC) {
   2444 		v |= RADEON_CRTC2_CSYNC_EN;
   2445 		if (crtc == 1)
   2446 			v |= RADEON_CRTC2_VSYNC_TRISTAT;
   2447 	}
   2448 
   2449 	PUT32(sc, gencntl, v);
   2450 	DPRINTF(("CRTC%s_GEN_CNTL = %08x\n", crtc ? "2" : "", v));
   2451 
   2452 	/*
   2453 	 * CRTC_EXT_CNTL - preserve disable flags, set ATI linear and EXT_CNT
   2454 	 */
   2455 	v = GET32(sc, RADEON_CRTC_EXT_CNTL);
   2456 	if (crtc == 0) {
   2457 		v &= (RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2458 		    RADEON_CRTC_DISPLAY_DIS);
   2459 		v |= RADEON_XCRT_CNT_EN | RADEON_VGA_ATI_LINEAR;
   2460 		if (mode->flags & VID_CSYNC)
   2461 			v |= RADEON_CRTC_VSYNC_TRISTAT;
   2462 	}
   2463 	/* unconditional turn on CRT, in case first CRTC is DFP */
   2464 	v |= RADEON_CRTC_CRT_ON;
   2465 	PUT32(sc, RADEON_CRTC_EXT_CNTL, v);
   2466 	PRINTREG(RADEON_CRTC_EXT_CNTL);
   2467 
   2468 	hd = ((GET32(sc, htotaldisp) >> 16) + 1) * 8;
   2469 	vd = (GET32(sc, vtotaldisp) >> 16) + 1;
   2470 	DPRINTF(("res %d x %d\n", hd, vd));
   2471 
   2472 	if ((hd != mode->hdisplay) || (vd != mode->vdisplay)) {
   2473 
   2474 		/*
   2475 		 * H_TOTAL_DISP
   2476 		 */
   2477 		v = ((mode->hdisplay / 8) - 1) << 16;
   2478 		v |= (mode->htotal / 8) - 1;
   2479 		PRINTREG(RADEON_CRTC_H_TOTAL_DISP);
   2480 		PUT32(sc, htotaldisp, v);
   2481 		DPRINTF(("CRTC%s_H_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2482 		if (fphtotaldisp) {
   2483 			PRINTREG(RADEON_FP_CRTC_H_TOTAL_DISP);
   2484 			PUT32(sc, fphtotaldisp, v);
   2485 			DPRINTF(("FP_H%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2486 		}
   2487 		/*
   2488 		 * H_SYNC_STRT_WID
   2489 		 */
   2490 		v = (((mode->hsync_end - mode->hsync_start) / 8) << 16);
   2491 		v |= (mode->hsync_start - 8);	/* match xf86-video-radeon */
   2492 		if (mode->flags & VID_NHSYNC)
   2493 			v |= RADEON_CRTC_H_SYNC_POL;
   2494 		PUT32(sc, hsyncstrt, v);
   2495 		DPRINTF(("CRTC%s_H_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2496 		if (fphsyncstrt) {
   2497 			PUT32(sc, fphsyncstrt, v);
   2498 			DPRINTF(("FP_H%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2499 		}
   2500 
   2501 		/*
   2502 		 * V_TOTAL_DISP
   2503 		 */
   2504 		v = ((mode->vdisplay - 1) << 16);
   2505 		v |= (mode->vtotal - 1);
   2506 		PUT32(sc, vtotaldisp, v);
   2507 		DPRINTF(("CRTC%s_V_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2508 		if (fpvtotaldisp) {
   2509 			PUT32(sc, fpvtotaldisp, v);
   2510 			DPRINTF(("FP_V%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2511 		}
   2512 
   2513 		/*
   2514 		 * V_SYNC_STRT_WID
   2515 		 */
   2516 		v = ((mode->vsync_end - mode->vsync_start) << 16);
   2517 		v |= (mode->vsync_start - 1);
   2518 		if (mode->flags & VID_NVSYNC)
   2519 			v |= RADEON_CRTC_V_SYNC_POL;
   2520 		PUT32(sc, vsyncstrt, v);
   2521 		DPRINTF(("CRTC%s_V_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2522 		if (fpvsyncstrt) {
   2523 			PUT32(sc, fpvsyncstrt, v);
   2524 			DPRINTF(("FP_V%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2525 		}
   2526 	}
   2527 	radeonfb_program_vclk(sc, mode->dot_clock, crtc, flags);
   2528 
   2529 	switch (crtc) {
   2530 	case 0:
   2531 		PUT32(sc, RADEON_CRTC_OFFSET, 0);
   2532 		PUT32(sc, RADEON_CRTC_OFFSET_CNTL, 0);
   2533 		PUT32(sc, RADEON_CRTC_PITCH, pitch);
   2534 		CLR32(sc, RADEON_DISP_MERGE_CNTL, RADEON_DISP_RGB_OFFSET_EN);
   2535 
   2536 		CLR32(sc, RADEON_CRTC_EXT_CNTL,
   2537 		    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2538 		    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2539 		CLR32(sc, RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B);
   2540 		PRINTREG(RADEON_CRTC_EXT_CNTL);
   2541 		PRINTREG(RADEON_CRTC_GEN_CNTL);
   2542 		PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   2543 		break;
   2544 
   2545 	case 1:
   2546 		PUT32(sc, RADEON_CRTC2_OFFSET, 0);
   2547 		PUT32(sc, RADEON_CRTC2_OFFSET_CNTL, 0);
   2548 		PUT32(sc, RADEON_CRTC2_PITCH, pitch);
   2549 		CLR32(sc, RADEON_DISP2_MERGE_CNTL, RADEON_DISP2_RGB_OFFSET_EN);
   2550 		CLR32(sc, RADEON_CRTC2_GEN_CNTL,
   2551 		    RADEON_CRTC2_VSYNC_DIS |
   2552 		    RADEON_CRTC2_HSYNC_DIS |
   2553 		    RADEON_CRTC2_DISP_DIS | RADEON_CRTC2_DISP_REQ_EN_B);
   2554 		PRINTREG(RADEON_CRTC2_GEN_CNTL);
   2555 		break;
   2556 	}
   2557 }
   2558 
   2559 int
   2560 radeonfb_isblank(struct radeonfb_display *dp)
   2561 {
   2562 	struct radeonfb_softc	*sc = dp->rd_softc;
   2563 	uint32_t	reg, mask;
   2564 
   2565 	if(!dp->rd_softc->sc_mapped)
   2566 		return 1;
   2567 
   2568 	if (IS_AVIVO(sc)) {
   2569 		reg = GET32(sc, AVIVO_D1CRTC_CONTROL);
   2570 		return ((reg & AVIVO_CRTC_EN) == 0);
   2571 	}
   2572 
   2573 	if (dp->rd_crtcs[0].rc_number) {
   2574 		reg = RADEON_CRTC2_GEN_CNTL;
   2575 		mask = RADEON_CRTC2_DISP_DIS;
   2576 	} else {
   2577 		reg = RADEON_CRTC_EXT_CNTL;
   2578 		mask = RADEON_CRTC_DISPLAY_DIS;
   2579 	}
   2580 	return ((GET32(dp->rd_softc, reg) & mask) ? 1 : 0);
   2581 }
   2582 
   2583 void
   2584 radeonfb_blank(struct radeonfb_display *dp, int blank)
   2585 {
   2586 	struct radeonfb_softc	*sc = dp->rd_softc;
   2587 	uint32_t		reg, mask;
   2588 	uint32_t		fpreg, fpval;
   2589 	int			i;
   2590 
   2591 
   2592 	if (!sc->sc_mapped)
   2593 		return;
   2594 
   2595 	if(IS_AVIVO(sc)) {
   2596 
   2597 		/*
   2598 		 * XXX
   2599 		 * I don't know how to turn the sunc outputs off for DPMS
   2600 		 * power control, so for now just turn the entire CRTC off
   2601 		 */
   2602 		if (blank) {
   2603 			CLR32(sc, AVIVO_D1CRTC_CONTROL, AVIVO_CRTC_EN);
   2604 			CLR32(sc, AVIVO_D2CRTC_CONTROL, AVIVO_CRTC_EN);
   2605 		} else {
   2606 			SET32(sc, AVIVO_D1CRTC_CONTROL, AVIVO_CRTC_EN);
   2607 			SET32(sc, AVIVO_D2CRTC_CONTROL, AVIVO_CRTC_EN);
   2608 		}
   2609 		return;
   2610 	}
   2611 	/* non-AVIVO case */
   2612 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   2613 
   2614 		if (dp->rd_crtcs[i].rc_number) {
   2615 			reg = RADEON_CRTC2_GEN_CNTL;
   2616 			mask = RADEON_CRTC2_DISP_DIS;
   2617 			fpreg = RADEON_FP2_GEN_CNTL;
   2618 			fpval = RADEON_FP2_ON;
   2619 		} else {
   2620 			reg = RADEON_CRTC_EXT_CNTL;
   2621 			mask = RADEON_CRTC_DISPLAY_DIS;
   2622 			fpreg = RADEON_FP_GEN_CNTL;
   2623 			fpval = RADEON_FP_FPON;
   2624 		}
   2625 
   2626 		if (blank) {
   2627 			SET32(sc, reg, mask);
   2628 			CLR32(sc, fpreg, fpval);
   2629 		} else {
   2630 			CLR32(sc, reg, mask);
   2631 			SET32(sc, fpreg, fpval);
   2632 		}
   2633 	}
   2634 	PRINTREG(RADEON_FP_GEN_CNTL);
   2635 	PRINTREG(RADEON_FP2_GEN_CNTL);
   2636 }
   2637 
   2638 void
   2639 radeonfb_init_screen(void *cookie, struct vcons_screen *scr, int existing,
   2640     long *defattr)
   2641 {
   2642 	struct radeonfb_display *dp = cookie;
   2643 	struct rasops_info *ri = &scr->scr_ri;
   2644 
   2645 	/* initialize font subsystem */
   2646 	wsfont_init();
   2647 
   2648 	scr->scr_flags |= VCONS_LOADFONT;
   2649 
   2650 	DPRINTF(("init screen called, existing %d\n", existing));
   2651 
   2652 	ri->ri_depth = dp->rd_bpp;
   2653 	ri->ri_width = dp->rd_virtx;
   2654 	ri->ri_height = dp->rd_virty;
   2655 	ri->ri_stride = dp->rd_stride;
   2656 	ri->ri_flg = RI_CENTER;
   2657 	switch (ri->ri_depth) {
   2658 		case 8:
   2659 			ri->ri_flg |= RI_ENABLE_ALPHA | RI_8BIT_IS_RGB | RI_PREFER_ALPHA;
   2660 			break;
   2661 		case 32:
   2662 			ri->ri_flg |= RI_ENABLE_ALPHA | RI_PREFER_ALPHA;
   2663 			/* we run radeons in RGB even on SPARC hardware */
   2664 			ri->ri_rnum = 8;
   2665 			ri->ri_gnum = 8;
   2666 			ri->ri_bnum = 8;
   2667 			ri->ri_rpos = 16;
   2668 			ri->ri_gpos = 8;
   2669 			ri->ri_bpos = 0;
   2670 			break;
   2671 	}
   2672 
   2673 	ri->ri_bits = (void *)dp->rd_fbptr;
   2674 
   2675 #ifdef VCONS_DRAW_INTR
   2676 	scr->scr_flags |= VCONS_DONT_READ;
   2677 #endif
   2678 
   2679 	if (existing) {
   2680 		ri->ri_flg |= RI_CLEAR;
   2681 
   2682 		/* start a modeswitch now */
   2683 		//radeonfb_modeswitch(dp);
   2684 	}
   2685 
   2686 	/*
   2687 	 * XXX: font selection should be based on properties, with some
   2688 	 * normal/reasonable default.
   2689 	 */
   2690 
   2691 	/* initialize and look for an initial font */
   2692 	rasops_init(ri, 0, 0);
   2693 	ri->ri_caps = WSSCREEN_UNDERLINE | WSSCREEN_HILIT |
   2694 		    WSSCREEN_WSCOLORS | WSSCREEN_REVERSE | WSSCREEN_RESIZE;
   2695 
   2696 	rasops_reconfig(ri, dp->rd_virty / ri->ri_font->fontheight,
   2697 		    dp->rd_virtx / ri->ri_font->fontwidth);
   2698 
   2699 	/* enable acceleration */
   2700 	dp->rd_putchar = ri->ri_ops.putchar;
   2701 	ri->ri_ops.copyrows = radeonfb_copyrows;
   2702 	ri->ri_ops.copycols = radeonfb_copycols;
   2703 	ri->ri_ops.eraserows = radeonfb_eraserows;
   2704 	ri->ri_ops.erasecols = radeonfb_erasecols;
   2705 	/* pick a putchar method based on font and Radeon model */
   2706 	if (ri->ri_font->stride < ri->ri_font->fontwidth) {
   2707 		/* got a bitmap font */
   2708 #if !defined(RADEONFB_ALWAYS_ACCEL_PUTCHAR)
   2709 		if (IS_R300(dp->rd_softc) && 0) {
   2710 			/*
   2711 			 * radeonfb_putchar() doesn't work right on some R3xx
   2712 			 * so we use software drawing here, the wrapper just
   2713 			 *  makes sure the engine is idle before scribbling
   2714 			 * into vram
   2715 			 */
   2716 			ri->ri_ops.putchar = radeonfb_putchar_wrapper;
   2717 		} else
   2718 #endif
   2719 			ri->ri_ops.putchar = radeonfb_putchar;
   2720 	} else {
   2721 		/* got an alpha font */
   2722 		switch(ri->ri_depth) {
   2723 			case 32:
   2724 				ri->ri_ops.putchar = radeonfb_putchar_aa32;
   2725 				break;
   2726 			case 8:
   2727 				ri->ri_ops.putchar = radeonfb_putchar_aa8;
   2728 				break;
   2729 			default:
   2730 				/* XXX this should never happen */
   2731 				panic("%s: depth is not 8 or 32 but we got an" \
   2732 					 " alpha font?!", __func__);
   2733 		}
   2734 	}
   2735 	ri->ri_ops.cursor = radeonfb_cursor;
   2736 }
   2737 
   2738 static uint32_t
   2739 radeonfb_avivo_INMC(struct radeonfb_softc *sc, uint32_t addr)
   2740 {
   2741 	uint32_t data;
   2742 
   2743 	PUT32(sc, AVIVO_MC_INDEX, (addr & 0xff) | 0x7f0000);
   2744 	(void)GET32(sc, AVIVO_MC_INDEX);
   2745 	data = GET32(sc, AVIVO_MC_DATA);
   2746 	PUT32(sc, AVIVO_MC_INDEX, 0);
   2747 	(void)GET32(sc, AVIVO_MC_INDEX);
   2748 	return data;
   2749 }
   2750 
   2751 static void
   2752 radeonfb_avivo_OUTMC(struct radeonfb_softc *sc, uint32_t addr, uint32_t data)
   2753 {
   2754 
   2755 	PUT32(sc, AVIVO_MC_INDEX, (addr & 0xff) | 0x7f0000);
   2756 	(void)GET32(sc, AVIVO_MC_INDEX);
   2757 	PUT32(sc, AVIVO_MC_DATA, data);
   2758 	PUT32(sc, AVIVO_MC_INDEX, 0);
   2759 	(void)GET32(sc, AVIVO_MC_INDEX);
   2760 }
   2761 
   2762 void
   2763 radeonfb_set_fbloc(struct radeonfb_softc *sc)
   2764 {
   2765 	uint32_t	gen = 0, ext = 0, gen2 = 0;
   2766 	uint32_t	agploc, aperbase, apersize, mcfbloc;
   2767 
   2768 
   2769 	if (IS_AVIVO(sc)) {
   2770 		agploc = radeonfb_avivo_INMC(sc, R520_MC_AGP_LOCATION);
   2771 	} else {
   2772 		gen = GET32(sc, RADEON_CRTC_GEN_CNTL);
   2773 		/* XXX */
   2774 		ext = GET32(sc, RADEON_CRTC_EXT_CNTL) & ~RADEON_CRTC_DISPLAY_DIS;
   2775 		agploc = GET32(sc, RADEON_MC_AGP_LOCATION);
   2776 		PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISP_REQ_EN_B);
   2777 		PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISPLAY_DIS);
   2778 #if 0
   2779 		PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISPLAY_DIS);
   2780 		PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISP_REQ_EN_B);
   2781 #endif
   2782 
   2783 		if (HAS_CRTC2(sc)) {
   2784 			gen2 = GET32(sc, RADEON_CRTC2_GEN_CNTL);
   2785 			PUT32(sc, RADEON_CRTC2_GEN_CNTL,
   2786 			    gen2 | RADEON_CRTC2_DISP_REQ_EN_B);
   2787 		}
   2788 
   2789 		delay(100000);
   2790 	}
   2791 
   2792 	aperbase = GET32(sc, RADEON_CONFIG_APER_0_BASE);
   2793 	apersize = GET32(sc, RADEON_CONFIG_APER_SIZE);
   2794 
   2795 
   2796 	mcfbloc = (aperbase >> 16) |
   2797 	    ((aperbase + (apersize - 1)) & 0xffff0000);
   2798 
   2799 	sc->sc_aperbase = (mcfbloc & 0xffff) << 16;
   2800 	sc->sc_memsz = apersize;
   2801 	DPRINTF(("aperbase = %08x\n", aperbase));
   2802 
   2803 	if (((agploc & 0xffff) << 16) !=
   2804 	    ((mcfbloc & 0xffff0000U) + 0x10000)) {
   2805 		agploc = mcfbloc & 0xffff0000U;
   2806 		agploc |= ((agploc + 0x10000) >> 16);
   2807 	}
   2808 
   2809 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2810 
   2811 	if (IS_AVIVO(sc)) {
   2812 		radeonfb_avivo_OUTMC(sc, R520_MC_FB_LOCATION, mcfbloc);
   2813 		radeonfb_avivo_OUTMC(sc, R520_MC_AGP_LOCATION, agploc);
   2814 		PRINTREG(AVIVO_HDP_FB_LOCATION);
   2815 		DPRINTF((" FB loc %08x\n", radeonfb_avivo_INMC(sc, R520_MC_FB_LOCATION)));
   2816 		DPRINTF(("AGP loc %08x\n", radeonfb_avivo_INMC(sc, R520_MC_AGP_LOCATION)));
   2817 	} else {
   2818 		PUT32(sc, RADEON_MC_FB_LOCATION, mcfbloc);
   2819 		PUT32(sc, RADEON_MC_AGP_LOCATION, agploc);
   2820 		PRINTREG(RADEON_MC_FB_LOCATION);
   2821 		PRINTREG(RADEON_MC_AGP_LOCATION);
   2822 
   2823 		PUT32(sc, RADEON_DISPLAY_BASE_ADDR, sc->sc_aperbase);
   2824 
   2825 		if (HAS_CRTC2(sc))
   2826 			PUT32(sc, RADEON_DISPLAY2_BASE_ADDR, sc->sc_aperbase);
   2827 
   2828 		PUT32(sc, RADEON_OV0_BASE_ADDR, sc->sc_aperbase);
   2829 		delay(100000);
   2830 
   2831 		PUT32(sc, RADEON_CRTC_GEN_CNTL, gen);
   2832 		PUT32(sc, RADEON_CRTC_EXT_CNTL, ext);
   2833 
   2834 		if (HAS_CRTC2(sc))
   2835 			PUT32(sc, RADEON_CRTC2_GEN_CNTL, gen2);
   2836 	}
   2837 #if 0
   2838 	/* XXX: what is this AGP garbage? :-) */
   2839 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2840 #endif
   2841 }
   2842 
   2843 void
   2844 radeonfb_init_misc(struct radeonfb_softc *sc)
   2845 {
   2846 	PUT32(sc, RADEON_BUS_CNTL,
   2847 	    RADEON_BUS_MASTER_DIS |
   2848 	    RADEON_BUS_PREFETCH_MODE_ACT |
   2849 	    RADEON_BUS_PCI_READ_RETRY_EN |
   2850 	    RADEON_BUS_PCI_WRT_RETRY_EN |
   2851 	    (3 << RADEON_BUS_RETRY_WS_SHIFT) |
   2852 	    RADEON_BUS_MSTR_RD_MULT |
   2853 	    RADEON_BUS_MSTR_RD_LINE |
   2854 	    RADEON_BUS_RD_DISCARD_EN |
   2855 	    RADEON_BUS_MSTR_DISCONNECT_EN |
   2856 	    RADEON_BUS_READ_BURST);
   2857 
   2858 	PUT32(sc, RADEON_BUS_CNTL1, 0xf0);
   2859 	/* PUT32(sc, RADEON_SEPROM_CNTL1, 0x09ff0000); */
   2860 	PUT32(sc, RADEON_FCP_CNTL, RADEON_FCP0_SRC_GND);
   2861 	PUT32(sc, RADEON_RBBM_CNTL,
   2862 	    (3 << RADEON_RB_SETTLE_SHIFT) |
   2863 	    (4 << RADEON_ABORTCLKS_HI_SHIFT) |
   2864 	    (4 << RADEON_ABORTCLKS_CP_SHIFT) |
   2865 	    (4 << RADEON_ABORTCLKS_CFIFO_SHIFT));
   2866 
   2867 	/* XXX: figure out what these mean! */
   2868 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2869 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2870 #if 0
   2871 	PUT32(sc, RADEON_DISP_MISC_CNTL, 0x5bb00400);
   2872 #endif
   2873 
   2874 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2875 	PUT32(sc, RADEON_GEN_INT_STATUS, GET32(sc, RADEON_GEN_INT_STATUS));
   2876 }
   2877 
   2878 static void
   2879 radeonfb_putpal(struct radeonfb_display *dp, int idx, int r, int g, int b)
   2880 {
   2881 	struct radeonfb_softc *sc = dp->rd_softc;
   2882 	int		crtc, cc;
   2883 	uint32_t	vclk;
   2884 
   2885 	if (IS_AVIVO(sc)) {
   2886 		for (cc = 0; cc < dp->rd_ncrtcs; cc++) {
   2887 			crtc = dp->rd_crtcs[cc].rc_number;
   2888 
   2889 			if (crtc)
   2890 				PUT32(sc, AVIVO_DC_LUT_RW_SELECT, 1);
   2891 			else
   2892 				PUT32(sc, AVIVO_DC_LUT_RW_SELECT, 0);
   2893 
   2894 			PUT32(sc, AVIVO_DC_LUT_RW_INDEX, idx);
   2895 	            	PUT32(sc, AVIVO_DC_LUT_30_COLOR,
   2896 	            	    (r << 22) | (g << 12) | (b << 2));
   2897 		}
   2898 
   2899 	} else {
   2900 		vclk = GETPLL(sc, RADEON_VCLK_ECP_CNTL);
   2901 		PUTPLL(sc, RADEON_VCLK_ECP_CNTL,
   2902 		    vclk & ~RADEON_PIXCLK_DAC_ALWAYS_ONb);
   2903 
   2904 		/* init the palette for every CRTC used by this display */
   2905 		for (cc = 0; cc < dp->rd_ncrtcs; cc++) {
   2906 			crtc = dp->rd_crtcs[cc].rc_number;
   2907 
   2908 			if (crtc)
   2909 				SET32(sc, RADEON_DAC_CNTL2,
   2910 				    RADEON_DAC2_PALETTE_ACC_CTL);
   2911 			else
   2912 				CLR32(sc, RADEON_DAC_CNTL2,
   2913 				    RADEON_DAC2_PALETTE_ACC_CTL);
   2914 
   2915 			PUT32(sc, RADEON_PALETTE_INDEX, idx);
   2916 	            	PUT32(sc, RADEON_PALETTE_30_DATA,
   2917 	            	    (r << 22) | (g << 12) | (b << 2));
   2918 		}
   2919 
   2920 		PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk);
   2921 	}
   2922 }
   2923 
   2924 /*
   2925  * This loads a linear color map for true color.
   2926  */
   2927 void
   2928 radeonfb_init_palette(struct radeonfb_display *dp)
   2929 {
   2930 	int		i;
   2931 
   2932 #define	DAC_WIDTH ((1 << 10) - 1)
   2933 #define	CLUT_WIDTH ((1 << 8) - 1)
   2934 #define	CLUT_COLOR(i)      ((i * DAC_WIDTH * 2 / CLUT_WIDTH + 1) / 2)
   2935 
   2936 	if (dp->rd_bpp == 8) {
   2937 
   2938 		/* R3G3B2 palette */
   2939 		uint32_t tmp, r, g, b;
   2940 
   2941 	        for (i = 0; i <= CLUT_WIDTH; ++i) {
   2942 			tmp = i & 0xe0;
   2943 
   2944 			/*
   2945 			 * replicate bits so 0xe0 maps to a red value of 0xff
   2946 			 * in order to make white look actually white
   2947 			 */
   2948 			tmp |= (tmp >> 3) | (tmp >> 6);
   2949 			r = tmp;
   2950 
   2951 			tmp = (i & 0x1c) << 3;
   2952 			tmp |= (tmp >> 3) | (tmp >> 6);
   2953 			g = tmp;
   2954 
   2955 			tmp = (i & 0x03) << 6;
   2956 			tmp |= tmp >> 2;
   2957 			tmp |= tmp >> 4;
   2958 			b = tmp;
   2959 
   2960 			dp->rd_cmap_red[i] = r;
   2961 			dp->rd_cmap_green[i] = g;
   2962 			dp->rd_cmap_blue[i] = b;
   2963 			radeonfb_putpal(dp, i, r, g, b);
   2964 		}
   2965 	} else {
   2966 		/* linear ramp */
   2967 		for (i = 0; i <= CLUT_WIDTH; ++i) {
   2968 			radeonfb_putpal(dp, i, i, i, i);
   2969 		}
   2970 	}
   2971 }
   2972 
   2973 static int
   2974 radeonfb_putcmap(struct radeonfb_display *dp, struct wsdisplay_cmap *cm)
   2975 {
   2976 	u_char *r, *g, *b;
   2977 	u_int index = cm->index;
   2978 	u_int count = cm->count;
   2979 	int i, error;
   2980 	u_char rbuf[256], gbuf[256], bbuf[256];
   2981 
   2982 #ifdef GENFB_DEBUG
   2983 	aprint_debug("putcmap: %d %d\n",index, count);
   2984 #endif
   2985 	if (index >= 256 || count > 256 - index)
   2986 		return EINVAL;
   2987 	error = copyin(cm->red, &rbuf[index], count);
   2988 	if (error)
   2989 		return error;
   2990 	error = copyin(cm->green, &gbuf[index], count);
   2991 	if (error)
   2992 		return error;
   2993 	error = copyin(cm->blue, &bbuf[index], count);
   2994 	if (error)
   2995 		return error;
   2996 
   2997 	memcpy(&dp->rd_cmap_red[index], &rbuf[index], count);
   2998 	memcpy(&dp->rd_cmap_green[index], &gbuf[index], count);
   2999 	memcpy(&dp->rd_cmap_blue[index], &bbuf[index], count);
   3000 
   3001 	r = &dp->rd_cmap_red[index];
   3002 	g = &dp->rd_cmap_green[index];
   3003 	b = &dp->rd_cmap_blue[index];
   3004 
   3005 	for (i = 0; i < count; i++) {
   3006 		radeonfb_putpal(dp, index, *r, *g, *b);
   3007 		index++;
   3008 		r++, g++, b++;
   3009 	}
   3010 	return 0;
   3011 }
   3012 
   3013 static int
   3014 radeonfb_getcmap(struct radeonfb_display *dp, struct wsdisplay_cmap *cm)
   3015 {
   3016 	u_int index = cm->index;
   3017 	u_int count = cm->count;
   3018 	int error;
   3019 
   3020 	if (index >= 256 || count > 256 - index)
   3021 		return EINVAL;
   3022 
   3023 	error = copyout(&dp->rd_cmap_red[index],   cm->red,   count);
   3024 	if (error)
   3025 		return error;
   3026 	error = copyout(&dp->rd_cmap_green[index], cm->green, count);
   3027 	if (error)
   3028 		return error;
   3029 	error = copyout(&dp->rd_cmap_blue[index],  cm->blue,  count);
   3030 	if (error)
   3031 		return error;
   3032 
   3033 	return 0;
   3034 }
   3035 
   3036 /*
   3037  * Bugs in some R300 hardware requires this when accessing CLOCK_CNTL_INDEX.
   3038  */
   3039 void
   3040 radeonfb_r300cg_workaround(struct radeonfb_softc *sc)
   3041 {
   3042 	uint32_t	tmp, save;
   3043 
   3044 	save = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   3045 	tmp = save & ~(0x3f | RADEON_PLL_WR_EN);
   3046 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, tmp);
   3047 	tmp = GET32(sc, RADEON_CLOCK_CNTL_DATA);
   3048 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, save);
   3049 }
   3050 
   3051 /*
   3052  * Acceleration entry points.
   3053  */
   3054 
   3055 /* this one draws characters using bitmap fonts */
   3056 static void
   3057 radeonfb_putchar(void *cookie, int row, int col, u_int c, long attr)
   3058 {
   3059 	struct rasops_info	*ri = cookie;
   3060 	struct vcons_screen	*scr = ri->ri_hw;
   3061 	struct radeonfb_display	*dp = scr->scr_cookie;
   3062 	struct radeonfb_softc	*sc = dp->rd_softc;
   3063 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   3064 	uint32_t		w, h;
   3065 	int			xd, yd, offset, i;
   3066 	uint32_t		bg, fg, gmc;
   3067 	uint32_t		reg;
   3068 	uint8_t			*data8;
   3069 	uint16_t		*data16;
   3070 	uint32_t		*data32;
   3071 	void			*data;
   3072 
   3073 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   3074 		return;
   3075 
   3076 	if (!CHAR_IN_FONT(c, font))
   3077 		return;
   3078 
   3079 	w = font->fontwidth;
   3080 	h = font->fontheight;
   3081 
   3082 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   3083 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   3084 
   3085 	xd = ri->ri_xorigin + col * w;
   3086 	yd = ri->ri_yorigin + row * h;
   3087 
   3088 	if (c == 0x20) {
   3089 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   3090 		return;
   3091 	}
   3092 	data = WSFONT_GLYPH(c, font);
   3093 
   3094 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3095 
   3096 	radeonfb_wait_fifo(sc, 9);
   3097 
   3098 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3099 	    RADEON_GMC_BRUSH_NONE |
   3100 	    RADEON_GMC_SRC_DATATYPE_MONO_FG_BG |
   3101 	    RADEON_GMC_DST_CLIPPING |
   3102 	    RADEON_ROP3_S |
   3103 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   3104 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3105 	    RADEON_GMC_WR_MSK_DIS |
   3106 	    gmc);
   3107 
   3108 	PUT32(sc, RADEON_SC_LEFT, xd);
   3109 	PUT32(sc, RADEON_SC_RIGHT, xd + w);
   3110 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, fg);
   3111 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, bg);
   3112 	PUT32(sc, RADEON_DP_CNTL,
   3113 	    RADEON_DST_X_LEFT_TO_RIGHT |
   3114 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   3115 
   3116 	PUT32(sc, RADEON_SRC_X_Y, 0);
   3117 	offset = 32 - (font->stride << 3);
   3118 	PUT32(sc, RADEON_DST_X_Y, ((xd - offset) << 16) | yd);
   3119 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (32 << 16) | h);
   3120 
   3121 	radeonfb_wait_fifo(sc, h);
   3122 	switch (font->stride) {
   3123 		case 1: {
   3124 			data8 = data;
   3125 			for (i = 0; i < h; i++) {
   3126 				reg = *data8;
   3127 #if BYTE_ORDER == LITTLE_ENDIAN
   3128 				reg = reg << 24;
   3129 #endif
   3130 				bus_space_write_stream_4(sc->sc_regt,
   3131 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   3132 				data8++;
   3133 			}
   3134 			break;
   3135 		}
   3136 		case 2: {
   3137 			data16 = data;
   3138 			for (i = 0; i < h; i++) {
   3139 				reg = *data16;
   3140 #if BYTE_ORDER == LITTLE_ENDIAN
   3141 				reg = reg << 16;
   3142 #endif
   3143 				bus_space_write_stream_4(sc->sc_regt,
   3144 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   3145 				data16++;
   3146 			}
   3147 			break;
   3148 		}
   3149 		case 4: {
   3150 			data32 = data;
   3151 			for (i = 0; i < h; i++) {
   3152 				reg = *data32;
   3153 				bus_space_write_stream_4(sc->sc_regt,
   3154 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   3155 				data32++;
   3156 			}
   3157 			break;
   3158 		}
   3159 	}
   3160 	if (attr & 1)
   3161 		radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   3162 }
   3163 
   3164 /* ... while this one is for anti-aliased ones */
   3165 static void
   3166 radeonfb_putchar_aa32(void *cookie, int row, int col, u_int c, long attr)
   3167 {
   3168 	struct rasops_info	*ri = cookie;
   3169 	struct vcons_screen	*scr = ri->ri_hw;
   3170 	struct radeonfb_display	*dp = scr->scr_cookie;
   3171 	struct radeonfb_softc	*sc = dp->rd_softc;
   3172 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   3173 	uint32_t		bg, fg, gmc;
   3174 	uint8_t			*data;
   3175 	int			w, h, xd, yd;
   3176 	int 			i, r, g, b, aval;
   3177 	int 			rf, gf, bf, rb, gb, bb;
   3178 	uint32_t 		pixel;
   3179 	int rv;
   3180 
   3181 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   3182 		return;
   3183 
   3184 	if (!CHAR_IN_FONT(c, font))
   3185 		return;
   3186 
   3187 	w = font->fontwidth;
   3188 	h = font->fontheight;
   3189 
   3190 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   3191 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   3192 
   3193 	xd = ri->ri_xorigin + col * w;
   3194 	yd = ri->ri_yorigin + row * h;
   3195 
   3196 	if (c == 0x20) {
   3197 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   3198 		if (attr & 1)
   3199 			radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   3200 		return;
   3201 	}
   3202 	rv = glyphcache_try(&dp->rd_gc, c, xd, yd, attr);
   3203 	if (rv == GC_OK)
   3204 		return;
   3205 
   3206 	data = WSFONT_GLYPH(c, font);
   3207 
   3208 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3209 
   3210 	radeonfb_wait_fifo(sc, 5);
   3211 
   3212 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3213 	    RADEON_GMC_BRUSH_NONE |
   3214 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3215 	    RADEON_ROP3_S |
   3216 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   3217 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3218 	    RADEON_GMC_WR_MSK_DIS |
   3219 	    gmc);
   3220 
   3221 	PUT32(sc, RADEON_DP_CNTL,
   3222 	    RADEON_DST_X_LEFT_TO_RIGHT |
   3223 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   3224 
   3225 	PUT32(sc, RADEON_SRC_X_Y, 0);
   3226 	PUT32(sc, RADEON_DST_X_Y, (xd << 16) | yd);
   3227 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (w << 16) | h);
   3228 
   3229 	rf = (fg >> 16) & 0xff;
   3230 	rb = (bg >> 16) & 0xff;
   3231 	gf = (fg >> 8) & 0xff;
   3232 	gb = (bg >> 8) & 0xff;
   3233 	bf =  fg & 0xff;
   3234 	bb =  bg & 0xff;
   3235 
   3236 	/*
   3237 	 * I doubt we can upload data faster than even the slowest Radeon
   3238 	 * could process them, especially when doing the alpha blending stuff
   3239 	 * along the way, so just make sure there's some room in the FIFO and
   3240 	 * then hammer away
   3241 	 * As it turns out we can, so make periodic stops to let the FIFO
   3242 	 * drain.
   3243 	 */
   3244 	radeonfb_wait_fifo(sc, 20);
   3245 	for (i = 0; i < ri->ri_fontscale; i++) {
   3246 		aval = *data;
   3247 		data++;
   3248 		if (aval == 0) {
   3249 			pixel = bg;
   3250 		} else if (aval == 255) {
   3251 			pixel = fg;
   3252 		} else {
   3253 			r = aval * rf + (255 - aval) * rb;
   3254 			g = aval * gf + (255 - aval) * gb;
   3255 			b = aval * bf + (255 - aval) * bb;
   3256 			pixel = (r & 0xff00) << 8 |
   3257 			        (g & 0xff00) |
   3258 			        (b & 0xff00) >> 8;
   3259 		}
   3260 		if (i & 16)
   3261 			radeonfb_wait_fifo(sc, 20);
   3262 		PUT32(sc, RADEON_HOST_DATA0, pixel);
   3263 	}
   3264 	if (rv == GC_ADD) {
   3265 		glyphcache_add(&dp->rd_gc, c, xd, yd);
   3266 	} else if (attr & 1)
   3267 		radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   3268 }
   3269 
   3270 static void
   3271 radeonfb_putchar_aa8(void *cookie, int row, int col, u_int c, long attr)
   3272 {
   3273 	struct rasops_info	*ri = cookie;
   3274 	struct vcons_screen	*scr = ri->ri_hw;
   3275 	struct radeonfb_display	*dp = scr->scr_cookie;
   3276 	struct radeonfb_softc	*sc = dp->rd_softc;
   3277 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   3278 	uint32_t bg, fg, latch = 0, bg8, fg8, pixel, gmc;
   3279 	int i, x, y, wi, he, r, g, b, aval;
   3280 	int r1, g1, b1, r0, g0, b0, fgo, bgo;
   3281 	uint8_t *data8;
   3282 	int rv, cnt;
   3283 
   3284 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   3285 		return;
   3286 
   3287 	if (!CHAR_IN_FONT(c, font))
   3288 		return;
   3289 
   3290 	wi = font->fontwidth;
   3291 	he = font->fontheight;
   3292 
   3293 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   3294 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   3295 
   3296 	x = ri->ri_xorigin + col * wi;
   3297 	y = ri->ri_yorigin + row * he;
   3298 
   3299 	if (c == 0x20) {
   3300 		radeonfb_rectfill(dp, x, y, wi, he, bg);
   3301 		if (attr & 1)
   3302 			radeonfb_rectfill(dp, x, y + he - 2, wi, 1, fg);
   3303 		return;
   3304 	}
   3305 	rv = glyphcache_try(&dp->rd_gc, c, x, y, attr);
   3306 	if (rv == GC_OK)
   3307 		return;
   3308 
   3309 	data8 = WSFONT_GLYPH(c, font);
   3310 
   3311 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3312 
   3313 	radeonfb_wait_fifo(sc, 5);
   3314 
   3315 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3316 	    RADEON_GMC_BRUSH_NONE |
   3317 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3318 	    RADEON_ROP3_S |
   3319 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   3320 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3321 	    RADEON_GMC_WR_MSK_DIS |
   3322 	    gmc);
   3323 
   3324 	PUT32(sc, RADEON_DP_CNTL,
   3325 	    RADEON_DST_X_LEFT_TO_RIGHT |
   3326 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   3327 
   3328 	PUT32(sc, RADEON_SRC_X_Y, 0);
   3329 	PUT32(sc, RADEON_DST_X_Y, (x << 16) | y);
   3330 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (wi << 16) | he);
   3331 
   3332 	/*
   3333 	 * we need the RGB colours here, so get offsets into rasops_cmap
   3334 	 */
   3335 	fgo = ((attr >> 24) & 0xf) * 3;
   3336 	bgo = ((attr >> 16) & 0xf) * 3;
   3337 
   3338 	r0 = rasops_cmap[bgo];
   3339 	r1 = rasops_cmap[fgo];
   3340 	g0 = rasops_cmap[bgo + 1];
   3341 	g1 = rasops_cmap[fgo + 1];
   3342 	b0 = rasops_cmap[bgo + 2];
   3343 	b1 = rasops_cmap[fgo + 2];
   3344 #define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6))
   3345 	bg8 = R3G3B2(r0, g0, b0);
   3346 	fg8 = R3G3B2(r1, g1, b1);
   3347 
   3348 	radeonfb_wait_fifo(sc, 20);
   3349 	cnt = 0;
   3350 	for (i = 0; i < ri->ri_fontscale; i++) {
   3351 		aval = *data8;
   3352 		if (aval == 0) {
   3353 			pixel = bg8;
   3354 		} else if (aval == 255) {
   3355 			pixel = fg8;
   3356 		} else {
   3357 			r = aval * r1 + (255 - aval) * r0;
   3358 			g = aval * g1 + (255 - aval) * g0;
   3359 			b = aval * b1 + (255 - aval) * b0;
   3360 			pixel = ((r & 0xe000) >> 8) |
   3361 				((g & 0xe000) >> 11) |
   3362 				((b & 0xc000) >> 14);
   3363 		}
   3364 		latch |= pixel << (8 * (i & 3));
   3365 		/* write in 32bit chunks */
   3366 		if ((i & 3) == 3) {
   3367 			PUT32(sc, RADEON_HOST_DATA0, latch);
   3368 			/*
   3369 			 * not strictly necessary, old data should be shifted
   3370 			 * out
   3371 			 */
   3372 			latch = 0;
   3373 			cnt++;
   3374 			if (cnt > 16) {
   3375 				cnt = 0;
   3376 				radeonfb_wait_fifo(sc, 20);
   3377 			}
   3378 		}
   3379 		data8++;
   3380 	}
   3381 	/* if we have pixels left in latch write them out */
   3382 	if ((i & 3) != 0) {
   3383 		/*
   3384 		 * radeon is weird - apparently leftover pixels are written
   3385 		 * from the middle, not from the left as everything else
   3386 		 */
   3387 		PUT32(sc, RADEON_HOST_DATA0, latch);
   3388 	}
   3389 
   3390 	if (rv == GC_ADD) {
   3391 		glyphcache_add(&dp->rd_gc, c, x, y);
   3392 	} else
   3393 		if (attr & 1)
   3394 			radeonfb_rectfill(dp, x, y + he - 2, wi, 1, fg);
   3395 }
   3396 
   3397 /*
   3398  * wrapper for software character drawing
   3399  * just sync the engine and call rasops*_putchar()
   3400  */
   3401 
   3402 #ifndef RADEONFB_ALWAYS_ACCEL_PUTCHAR
   3403 static void
   3404 radeonfb_putchar_wrapper(void *cookie, int row, int col, u_int c, long attr)
   3405 {
   3406 	struct rasops_info	*ri = cookie;
   3407 	struct vcons_screen	*scr = ri->ri_hw;
   3408 	struct radeonfb_display	*dp = scr->scr_cookie;
   3409 
   3410 	radeonfb_engine_idle(dp->rd_softc);
   3411 	dp->rd_putchar(ri, row, col, c, attr);
   3412 }
   3413 #endif
   3414 
   3415 static void
   3416 radeonfb_eraserows(void *cookie, int row, int nrows, long fillattr)
   3417 {
   3418 	struct rasops_info	*ri = cookie;
   3419 	struct vcons_screen	*scr = ri->ri_hw;
   3420 	struct radeonfb_display	*dp = scr->scr_cookie;
   3421 	uint32_t		x, y, w, h, fg, bg, ul;
   3422 
   3423 	/* XXX: check for full emulation mode? */
   3424 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3425 		x = ri->ri_xorigin;
   3426 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3427 		w = ri->ri_emuwidth;
   3428 		h = ri->ri_font->fontheight * nrows;
   3429 
   3430 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   3431 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   3432 	}
   3433 }
   3434 
   3435 static void
   3436 radeonfb_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
   3437 {
   3438 	struct rasops_info	*ri = cookie;
   3439 	struct vcons_screen	*scr = ri->ri_hw;
   3440 	struct radeonfb_display	*dp = scr->scr_cookie;
   3441 	uint32_t		x, ys, yd, w, h;
   3442 
   3443 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3444 		x = ri->ri_xorigin;
   3445 		ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow;
   3446 		yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow;
   3447 		w = ri->ri_emuwidth;
   3448 		h = ri->ri_font->fontheight * nrows;
   3449 		radeonfb_bitblt(dp, x, ys, x, yd, w, h,
   3450 		    RADEON_ROP3_S);
   3451 	}
   3452 }
   3453 
   3454 static void
   3455 radeonfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
   3456 {
   3457 	struct rasops_info	*ri = cookie;
   3458 	struct vcons_screen	*scr = ri->ri_hw;
   3459 	struct radeonfb_display	*dp = scr->scr_cookie;
   3460 	uint32_t		xs, xd, y, w, h;
   3461 
   3462 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3463 		xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol;
   3464 		xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol;
   3465 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3466 		w = ri->ri_font->fontwidth * ncols;
   3467 		h = ri->ri_font->fontheight;
   3468 		radeonfb_bitblt(dp, xs, y, xd, y, w, h,
   3469 		    RADEON_ROP3_S);
   3470 	}
   3471 }
   3472 
   3473 static void
   3474 radeonfb_erasecols(void *cookie, int row, int startcol, int ncols,
   3475     long fillattr)
   3476 {
   3477 	struct rasops_info	*ri = cookie;
   3478 	struct vcons_screen	*scr = ri->ri_hw;
   3479 	struct radeonfb_display	*dp = scr->scr_cookie;
   3480 	uint32_t		x, y, w, h, fg, bg, ul;
   3481 
   3482 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3483 		x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol;
   3484 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3485 		w = ri->ri_font->fontwidth * ncols;
   3486 		h = ri->ri_font->fontheight;
   3487 
   3488 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   3489 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   3490 	}
   3491 }
   3492 
   3493 static void
   3494 radeonfb_cursor(void *cookie, int on, int row, int col)
   3495 {
   3496 	struct rasops_info *ri = cookie;
   3497 	struct vcons_screen *scr = ri->ri_hw;
   3498 	struct radeonfb_display	*dp = scr->scr_cookie;
   3499 	int x, y, wi, he;
   3500 
   3501 	wi = ri->ri_font->fontwidth;
   3502 	he = ri->ri_font->fontheight;
   3503 
   3504 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3505 		x = ri->ri_ccol * wi + ri->ri_xorigin;
   3506 		y = ri->ri_crow * he + ri->ri_yorigin;
   3507 		/* first turn off the old cursor */
   3508 		if (ri->ri_flg & RI_CURSOR) {
   3509 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   3510 			    RADEON_ROP3_Dn);
   3511 			ri->ri_flg &= ~RI_CURSOR;
   3512 		}
   3513 		ri->ri_crow = row;
   3514 		ri->ri_ccol = col;
   3515 		/* then (possibly) turn on the new one */
   3516 		if (on) {
   3517 			x = ri->ri_ccol * wi + ri->ri_xorigin;
   3518 			y = ri->ri_crow * he + ri->ri_yorigin;
   3519 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   3520 			    RADEON_ROP3_Dn);
   3521 			ri->ri_flg |= RI_CURSOR;
   3522 		}
   3523 	} else {
   3524 		scr->scr_ri.ri_crow = row;
   3525 		scr->scr_ri.ri_ccol = col;
   3526 		scr->scr_ri.ri_flg &= ~RI_CURSOR;
   3527 	}
   3528 }
   3529 
   3530 /*
   3531  * Underlying acceleration support.
   3532  */
   3533 
   3534 static void
   3535 radeonfb_rectfill(struct radeonfb_display *dp, int dstx, int dsty,
   3536     int width, int height, uint32_t color)
   3537 {
   3538 	struct radeonfb_softc	*sc = dp->rd_softc;
   3539 	uint32_t		gmc;
   3540 
   3541 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3542 
   3543 	radeonfb_wait_fifo(sc, 6);
   3544 
   3545 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3546 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3547 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3548 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3549 	    RADEON_ROP3_P | gmc);
   3550 
   3551 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, color);
   3552 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3553 	PUT32(sc, RADEON_DP_CNTL,
   3554 	    RADEON_DST_X_LEFT_TO_RIGHT |
   3555 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   3556 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   3557 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   3558 }
   3559 
   3560 static void
   3561 radeonfb_rectfill_a(void *cookie, int dstx, int dsty,
   3562     int width, int height, long attr)
   3563 {
   3564 	struct radeonfb_display *dp = cookie;
   3565 
   3566 	radeonfb_rectfill(dp, dstx, dsty, width, height,
   3567 	    dp->rd_vscreen.scr_ri.ri_devcmap[(attr >> 24 & 0xf)]);
   3568 }
   3569 
   3570 static void
   3571 radeonfb_bitblt(void *cookie, int srcx, int srcy,
   3572     int dstx, int dsty, int width, int height, int rop)
   3573 {
   3574 	struct radeonfb_display *dp = cookie;
   3575 	struct radeonfb_softc	*sc = dp->rd_softc;
   3576 	uint32_t		gmc;
   3577 	uint32_t		dir;
   3578 
   3579 	if (dsty < srcy) {
   3580 		dir = RADEON_DST_Y_TOP_TO_BOTTOM;
   3581 	} else {
   3582 		srcy += height - 1;
   3583 		dsty += height - 1;
   3584 		dir = 0;
   3585 	}
   3586 	if (dstx < srcx) {
   3587 		dir |= RADEON_DST_X_LEFT_TO_RIGHT;
   3588 	} else {
   3589 		srcx += width - 1;
   3590 		dstx += width - 1;
   3591 	}
   3592 
   3593 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3594 
   3595 	radeonfb_wait_fifo(sc, 6);
   3596 
   3597 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3598 	    RADEON_GMC_BRUSH_NONE |
   3599 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3600 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3601 	    RADEON_DP_SRC_SOURCE_MEMORY |
   3602 	    rop | gmc);
   3603 
   3604 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3605 	PUT32(sc, RADEON_DP_CNTL, dir);
   3606 	PUT32(sc, RADEON_SRC_Y_X, (srcy << 16) | srcx);
   3607 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   3608 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   3609 }
   3610 
   3611 static void
   3612 radeonfb_engine_idle(struct radeonfb_softc *sc)
   3613 {
   3614 
   3615 	radeonfb_wait_fifo(sc, 64);
   3616 	while ((GET32(sc, RADEON_RBBM_STATUS) &
   3617 			RADEON_RBBM_ACTIVE) != 0);
   3618 	radeonfb_engine_flush(sc);
   3619 }
   3620 
   3621 static inline void
   3622 radeonfb_wait_fifo(struct radeonfb_softc *sc, int n)
   3623 {
   3624 	int	i;
   3625 
   3626 	for (i = RADEON_TIMEOUT; i; i--) {
   3627 		if ((GET32(sc, RADEON_RBBM_STATUS) &
   3628 			RADEON_RBBM_FIFOCNT_MASK) >= n)
   3629 			return;
   3630 	}
   3631 #ifdef	RADEONFB_DEBUG
   3632 	if (!i)
   3633 		printf("%s: timed out waiting for fifo (%x)\n",
   3634 		    XNAME(sc), GET32(sc, RADEON_RBBM_STATUS));
   3635 #endif
   3636 }
   3637 
   3638 static void
   3639 radeonfb_engine_flush(struct radeonfb_softc *sc)
   3640 {
   3641 	int	i = 0;
   3642 
   3643 	if (IS_R300(sc) || IS_AVIVO(sc)) {
   3644 		SET32(sc, R300_DSTCACHE_CTLSTAT, R300_RB2D_DC_FLUSH_ALL);
   3645 		while (GET32(sc, R300_DSTCACHE_CTLSTAT) & R300_RB2D_DC_BUSY) {
   3646 			i++;
   3647 		}
   3648 	} else {
   3649 		SET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT,
   3650 		    RADEON_RB2D_DC_FLUSH_ALL);
   3651 		while (GET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT) &
   3652 			RADEON_RB2D_DC_BUSY) {
   3653 			i++;
   3654 		}
   3655 	}
   3656 #ifdef DIAGNOSTIC
   3657 	if (i > RADEON_TIMEOUT)
   3658 		printf("%s: engine flush timed out!\n", XNAME(sc));
   3659 #endif
   3660 }
   3661 
   3662 static inline void
   3663 radeonfb_unclip(struct radeonfb_softc *sc)
   3664 {
   3665 
   3666 	radeonfb_wait_fifo(sc, 2);
   3667 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   3668 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   3669 }
   3670 
   3671 static void
   3672 radeonfb_engine_init(struct radeonfb_display *dp)
   3673 {
   3674 	struct radeonfb_softc	*sc = dp->rd_softc;
   3675 	uint32_t		pitch;
   3676 
   3677 	/* no 3D */
   3678 	PUT32(sc, RADEON_RB3D_CNTL, 0);
   3679 
   3680 	if (IS_AVIVO(sc)) {
   3681 
   3682 #if 0
   3683 		/* XXX the xf86-video-radeon does this, causes lockups here */
   3684 		psel = GET32(sc, R400_GB_PIPE_SELECT);
   3685 		PRINTREG(R400_GB_PIPE_SELECT);
   3686 		DPRINTF(("PLL %08x %08x\n", GETPLL(sc, R500_DYN_SCLK_PWMEM_PIPE),
   3687 		    (1 | ((psel >> 8) & 0xf) << 4)));
   3688 		PUTPLL(sc, R500_DYN_SCLK_PWMEM_PIPE, (1 | ((psel >> 8) & 0xf) << 4));
   3689 #endif
   3690 		SET32(sc, RADEON_WAIT_UNTIL, RADEON_WAIT_2D_IDLECLEAN | RADEON_WAIT_3D_IDLECLEAN);
   3691 		SET32(sc, R300_DST_PIPE_CONFIG, R300_PIPE_AUTO_CONFIG);
   3692 		SET32(sc, R300_RB2D_DSTCACHE_MODE, R300_DC_AUTOFLUSH_ENABLE |
   3693 					     R300_DC_DC_DISABLE_IGNORE_PE);
   3694 	}
   3695 
   3696 	PRINTREG(RADEON_RB3D_CNTL);
   3697 	PRINTREG(RADEON_DP_GUI_MASTER_CNTL);
   3698 	PRINTREG(RADEON_RBBM_STATUS);
   3699 
   3700 	radeonfb_engine_reset(sc);
   3701 	PRINTREG(RADEON_RBBM_STATUS);
   3702 
   3703 	/*
   3704 	 * Apple OF hands us some radeons with tiling enabled - explicitly
   3705 	 * disable it here
   3706 	 */
   3707 	PUT32(sc, RADEON_SURFACE_CNTL, RADEON_SURF_TRANSLATION_DIS);
   3708 
   3709 	radeonfb_wait_fifo(sc, 1);
   3710 	if (!IS_R300(sc) && !IS_AVIVO(sc))
   3711 		PUT32(sc, RADEON_RB2D_DSTCACHE_MODE, 0);
   3712 
   3713 	radeonfb_wait_fifo(sc, 3);
   3714 
   3715 	/*
   3716 	 * XXX
   3717 	 * I strongly suspect this works mostly by accident on !AVIVO
   3718 	 * AVIVO uses all 22 bits for the framebuffer offset, so it can
   3719 	 * address up to 4GB. Older chips probably use bits 20-22 for other
   3720 	 * things and we just so happen to set the right ones by having our
   3721 	 * PCI/AGP space above 0x80000000.
   3722 	 * Either way, r5xx does not work if we set these bits, while older
   3723 	 * chips don't work without.
   3724 	 */
   3725 	pitch = (dp->rd_stride + 0x3f) >> 6;
   3726 	if (IS_AVIVO(sc)) {
   3727 		pitch = pitch << 22;
   3728 	} else
   3729 		pitch = (pitch << 22) | (sc->sc_aperbase >> 10);
   3730 
   3731 	PUT32(sc, RADEON_DEFAULT_PITCH_OFFSET, pitch);
   3732 	PUT32(sc, RADEON_DST_PITCH_OFFSET, pitch);
   3733 	PUT32(sc, RADEON_SRC_PITCH_OFFSET, pitch);
   3734 
   3735 	(void)GET32(sc, RADEON_DP_DATATYPE);
   3736 
   3737 	/* default scissors -- no clipping */
   3738 	radeonfb_wait_fifo(sc, 1);
   3739 	PUT32(sc, RADEON_DEFAULT_SC_BOTTOM_RIGHT,
   3740 	    RADEON_DEFAULT_SC_RIGHT_MAX | RADEON_DEFAULT_SC_BOTTOM_MAX);
   3741 
   3742 	radeonfb_wait_fifo(sc, 1);
   3743 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3744 	    (dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT) |
   3745 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3746 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3747 	    RADEON_GMC_SRC_DATATYPE_COLOR);
   3748 
   3749 	radeonfb_wait_fifo(sc, 10);
   3750 	PUT32(sc, RADEON_DST_LINE_START, 0);
   3751 	PUT32(sc, RADEON_DST_LINE_END, 0);
   3752 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, 0xffffffff);
   3753 	PUT32(sc, RADEON_DP_BRUSH_BKGD_CLR, 0);
   3754 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, 0xffffffff);
   3755 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, 0);
   3756 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3757 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   3758 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   3759 	PUT32(sc, RADEON_AUX_SC_CNTL, 0);
   3760 	radeonfb_engine_idle(sc);
   3761 }
   3762 
   3763 static void
   3764 radeonfb_engine_reset(struct radeonfb_softc *sc)
   3765 {
   3766 	uint32_t	hpc, rbbm, mclkcntl, clkindex;
   3767 
   3768 	radeonfb_engine_flush(sc);
   3769 
   3770 	clkindex = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   3771 	if (HAS_R300CG(sc))
   3772 		radeonfb_r300cg_workaround(sc);
   3773 	mclkcntl = GETPLL(sc, RADEON_MCLK_CNTL);
   3774 
   3775 	/*
   3776 	 * According to comments in XFree code, resetting the HDP via
   3777 	 * the RBBM_SOFT_RESET can cause bad behavior on some systems.
   3778 	 * So we use HOST_PATH_CNTL instead.
   3779 	 */
   3780 
   3781 	hpc = GET32(sc, RADEON_HOST_PATH_CNTL);
   3782 	rbbm = GET32(sc, RADEON_RBBM_SOFT_RESET);
   3783 	if (IS_R300(sc) || IS_AVIVO(sc)) {
   3784 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   3785 		    RADEON_SOFT_RESET_CP |
   3786 		    RADEON_SOFT_RESET_HI |
   3787 		    RADEON_SOFT_RESET_E2);
   3788 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3789 		PUT32(sc, RADEON_RBBM_SOFT_RESET, 0);
   3790 		/*
   3791 		 * XXX: this bit is not defined in any ATI docs I have,
   3792 		 * nor in the XFree code, but XFree does it.  Why?
   3793 		 */
   3794 		SET32(sc, RADEON_RB2D_DSTCACHE_MODE, R300_DC_DC_DISABLE_IGNORE_PE);
   3795 	} else {
   3796 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   3797 		    RADEON_SOFT_RESET_CP |
   3798 		    RADEON_SOFT_RESET_SE |
   3799 		    RADEON_SOFT_RESET_RE |
   3800 		    RADEON_SOFT_RESET_PP |
   3801 		    RADEON_SOFT_RESET_E2 |
   3802 		    RADEON_SOFT_RESET_RB);
   3803 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3804 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm &
   3805 		    ~(RADEON_SOFT_RESET_CP |
   3806 			RADEON_SOFT_RESET_SE |
   3807 			RADEON_SOFT_RESET_RE |
   3808 			RADEON_SOFT_RESET_PP |
   3809 			RADEON_SOFT_RESET_E2 |
   3810 			RADEON_SOFT_RESET_RB));
   3811 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3812 	}
   3813 
   3814 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc | RADEON_HDP_SOFT_RESET);
   3815 	GET32(sc, RADEON_HOST_PATH_CNTL);
   3816 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc);
   3817 
   3818 	if (!IS_R300(sc) && !IS_AVIVO(sc))
   3819 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm);
   3820 
   3821 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, clkindex);
   3822 	PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   3823 	PUTPLL(sc, RADEON_MCLK_CNTL, mclkcntl);
   3824 
   3825 	if (HAS_R300CG(sc))
   3826 		radeonfb_r300cg_workaround(sc);
   3827 }
   3828 
   3829 static int
   3830 radeonfb_set_curpos(struct radeonfb_display *dp, struct wsdisplay_curpos *pos)
   3831 {
   3832 	int		x, y;
   3833 
   3834 	x = pos->x;
   3835 	y = pos->y;
   3836 
   3837 	/*
   3838 	 * This doesn't let a cursor move off the screen.  I'm not
   3839 	 * sure if this will have negative effects for e.g. Xinerama.
   3840 	 * I'd guess Xinerama handles it by changing the cursor shape,
   3841 	 * but that needs verification.
   3842 	 */
   3843 	if (x >= dp->rd_virtx)
   3844 		x = dp->rd_virtx - 1;
   3845 	if (x < 0)
   3846 		x = 0;
   3847 	if (y >= dp->rd_virty)
   3848 		y = dp->rd_virty - 1;
   3849 	if (y < 0)
   3850 		y = 0;
   3851 
   3852 	dp->rd_cursor.rc_pos.x = x;
   3853 	dp->rd_cursor.rc_pos.y = y;
   3854 
   3855 	radeonfb_cursor_position(dp);
   3856 	return 0;
   3857 }
   3858 
   3859 static int
   3860 radeonfb_set_cursor(struct radeonfb_display *dp, struct wsdisplay_cursor *wc)
   3861 {
   3862 	unsigned	flags;
   3863 
   3864 	uint8_t		r[2], g[2], b[2];
   3865 	unsigned	index, count;
   3866 	int		i, err;
   3867 	int		pitch, size;
   3868 	struct radeonfb_cursor	*nc = &dp->rd_tempcursor;
   3869 
   3870 	flags = wc->which;
   3871 
   3872 	/* copy old values */
   3873 	memcpy(nc, &dp->rd_cursor, sizeof(struct radeonfb_cursor));
   3874 
   3875 	if (flags & WSDISPLAY_CURSOR_DOCMAP) {
   3876 		index = wc->cmap.index;
   3877 		count = wc->cmap.count;
   3878 
   3879 		if (index >= 2 || count > 2 - index)
   3880 			return EINVAL;
   3881 
   3882 		err = copyin(wc->cmap.red, &r[index], count);
   3883 		if (err)
   3884 			return err;
   3885 		err = copyin(wc->cmap.green, &g[index], count);
   3886 		if (err)
   3887 			return err;
   3888 		err = copyin(wc->cmap.blue, &b[index], count);
   3889 		if (err)
   3890 			return err;
   3891 
   3892 		for (i = index; i < index + count; i++) {
   3893 			nc->rc_cmap[i] =
   3894 			    (r[i] << 16) + (g[i] << 8) + (b[i] << 0);
   3895 		}
   3896 	}
   3897 
   3898 	if (flags & WSDISPLAY_CURSOR_DOSHAPE) {
   3899 		if ((wc->size.x > RADEON_CURSORMAXX) ||
   3900 		    (wc->size.y > RADEON_CURSORMAXY))
   3901 			return EINVAL;
   3902 
   3903 		/* figure bytes per line */
   3904 		pitch = (wc->size.x + 7) / 8;
   3905 		size = pitch * wc->size.y;
   3906 
   3907 		/* clear the old cursor and mask */
   3908 		memset(nc->rc_image, 0, 512);
   3909 		memset(nc->rc_mask, 0, 512);
   3910 
   3911 		nc->rc_size = wc->size;
   3912 
   3913 		if ((err = copyin(wc->image, nc->rc_image, size)) != 0)
   3914 			return err;
   3915 
   3916 		if ((err = copyin(wc->mask, nc->rc_mask, size)) != 0)
   3917 			return err;
   3918 	}
   3919 
   3920 	if (flags & WSDISPLAY_CURSOR_DOHOT) {
   3921 		nc->rc_hot = wc->hot;
   3922 		if (nc->rc_hot.x >= nc->rc_size.x)
   3923 			nc->rc_hot.x = nc->rc_size.x - 1;
   3924 		if (nc->rc_hot.y >= nc->rc_size.y)
   3925 			nc->rc_hot.y = nc->rc_size.y - 1;
   3926 	}
   3927 
   3928 	if (flags & WSDISPLAY_CURSOR_DOPOS) {
   3929 		nc->rc_pos = wc->pos;
   3930 		if (nc->rc_pos.x >= dp->rd_virtx)
   3931 			nc->rc_pos.x = dp->rd_virtx - 1;
   3932 #if 0
   3933 		if (nc->rc_pos.x < 0)
   3934 			nc->rc_pos.x = 0;
   3935 #endif
   3936 		if (nc->rc_pos.y >= dp->rd_virty)
   3937 			nc->rc_pos.y = dp->rd_virty - 1;
   3938 #if 0
   3939 		if (nc->rc_pos.y < 0)
   3940 			nc->rc_pos.y = 0;
   3941 #endif
   3942 	}
   3943 	if (flags & WSDISPLAY_CURSOR_DOCUR) {
   3944 		nc->rc_visible = wc->enable;
   3945 	}
   3946 
   3947 	memcpy(&dp->rd_cursor, nc, sizeof(struct radeonfb_cursor));
   3948 	radeonfb_cursor_update(dp, wc->which);
   3949 
   3950 	return 0;
   3951 }
   3952 
   3953 static uint8_t
   3954 radeonfb_backwards(uint8_t d)
   3955 {
   3956 	uint8_t l;
   3957 
   3958 	l = d << 7;
   3959 	l |= ((d & 0x02) << 5);
   3960 	l |= ((d & 0x04) << 3);
   3961 	l |= ((d & 0x08) << 1);
   3962 	l |= ((d & 0x10) >> 1);
   3963 	l |= ((d & 0x20) >> 3);
   3964 	l |= ((d & 0x40) >> 5);
   3965 	l |= ((d & 0x80) >> 7);
   3966 	return l;
   3967 }
   3968 
   3969 /*
   3970  * Change the cursor shape.  Call this with the cursor locked to avoid
   3971  * flickering/tearing.
   3972  */
   3973 static void
   3974 radeonfb_cursor_shape(struct radeonfb_display *dp)
   3975 {
   3976 	uint8_t	and[512], xor[512];
   3977 	int	i, j, src, dst /* , pitch */;
   3978 	const uint8_t	*msk = dp->rd_cursor.rc_mask;
   3979 	const uint8_t	*img = dp->rd_cursor.rc_image;
   3980 
   3981 	/*
   3982 	 * Radeon cursor data interleaves one line of AND data followed
   3983 	 * by a line of XOR data.  (Each line corresponds to a whole hardware
   3984 	 * pitch - i.e. 64 pixels or 8 bytes.)
   3985 	 *
   3986 	 * The cursor is displayed using the following table:
   3987 	 *
   3988 	 * AND	XOR	Result
   3989 	 * ----------------------
   3990 	 *  0    0	Cursor color 0
   3991 	 *  0	 1	Cursor color 1
   3992 	 *  1	 0	Transparent
   3993 	 *  1	 1	Complement of background
   3994 	 *
   3995 	 * Our masks are therefore different from what we were passed.
   3996 	 * Passed in, I'm assuming the data represents either color 0 or 1,
   3997 	 * and a mask, so the passed in table looks like:
   3998 	 *
   3999 	 * IMG	Mask	Result
   4000 	 * -----------------------
   4001 	 *  0	 0	Transparent
   4002 	 *  0	 1	Cursor color 0
   4003 	 *  1	 0	Transparent
   4004 	 *  1	 1	Cursor color 1
   4005 	 *
   4006 	 * IF mask bit == 1, AND = 0, XOR = color.
   4007 	 * IF mask bit == 0, AND = 1, XOR = 0.
   4008 	 *
   4009 	 * hence:	AND = ~(mask);	XOR = color & ~(mask);
   4010 	 */
   4011 
   4012 	/* pitch = ((dp->rd_cursor.rc_size.x + 7) / 8); */
   4013 
   4014 	/* start by assuming all bits are transparent */
   4015 	memset(and, 0xff, 512);
   4016 	memset(xor, 0x00, 512);
   4017 
   4018 	src = 0;
   4019 	dst = 0;
   4020 	for (i = 0; i < 64; i++) {
   4021 		for (j = 0; j < 64; j += 8) {
   4022 			if ((i < dp->rd_cursor.rc_size.y) &&
   4023 			    (j < dp->rd_cursor.rc_size.x)) {
   4024 
   4025 				/* take care to leave odd bits alone */
   4026 				and[dst] &= ~(msk[src]);
   4027 				xor[dst] = img[src] & msk[src];
   4028 				src++;
   4029 			}
   4030 			dst++;
   4031 		}
   4032 	}
   4033 
   4034 	for (i = 0; i < 512; i++) {
   4035 		and[i] = radeonfb_backwards(and[i]);
   4036 		xor[i] = radeonfb_backwards(xor[i]);
   4037 	}
   4038 
   4039 	/* copy the image into place */
   4040 	for (i = 0; i < 64; i++) {
   4041 		memcpy((uint8_t *)dp->rd_curptr + (i * 16),
   4042 		    &and[i * 8], 8);
   4043 		memcpy((uint8_t *)dp->rd_curptr + (i * 16) + 8,
   4044 		    &xor[i * 8], 8);
   4045 	}
   4046 }
   4047 
   4048 /*
   4049  * We use the cursor in 24bit mode on avivo, much simpler than the above.
   4050  * Should probably do the same on older radeons
   4051  */
   4052 static void
   4053 radeonfb_avivo_cursor_shape(struct radeonfb_display *dp)
   4054 {
   4055 	const uint8_t	*msk = dp->rd_cursor.rc_mask;
   4056 	const uint8_t	*img = dp->rd_cursor.rc_image;
   4057 	uint32_t 	*out = (uint32_t *)dp->rd_curptr;
   4058 	uint8_t		bit;
   4059 	int 		i, j, px;
   4060 
   4061 	for (i = 0; i < 64 * 8; i++) {
   4062 		bit = 0x01;
   4063 		for (j = 0; j < 8; j++) {
   4064 			px = ((*msk & bit) ? 2 : 0) | ((*img & bit) ? 1 : 0);
   4065 			switch (px) {
   4066 				case 0:
   4067 				case 1:
   4068 					*out = htole32(0x00000000);
   4069 					break;
   4070 				case 2:
   4071 					*out = htole32(0xff000000 |
   4072 						  dp->rd_cursor.rc_cmap[0]);
   4073 					break;
   4074 				case 3:
   4075 					*out = htole32(0xff000000 |
   4076 						  dp->rd_cursor.rc_cmap[1]);
   4077 					break;
   4078 			}
   4079 			out++;
   4080 			bit = bit << 1;
   4081 		}
   4082 		msk++;
   4083 		img++;
   4084 	}
   4085 }
   4086 
   4087 static void
   4088 radeonfb_cursor_position(struct radeonfb_display *dp)
   4089 {
   4090 	struct radeonfb_softc	*sc = dp->rd_softc;
   4091 	uint32_t		offset, hvoff, hvpos;	/* registers */
   4092 	uint32_t		coff;			/* cursor offset */
   4093 	int			i, x, y, xoff, yoff, crtcoff, lock;
   4094 
   4095 	/*
   4096 	 * XXX: this also needs to handle pan/scan
   4097 	 */
   4098 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   4099 
   4100 		struct radeonfb_crtc	*rcp = &dp->rd_crtcs[i];
   4101 
   4102 		SET32(sc, AVIVO_D1CUR_UPDATE, AVIVO_D1CURSOR_UPDATE_LOCK);
   4103 		PUT32(sc, AVIVO_D1CUR_SIZE, 0x003f003f);
   4104 		if (IS_AVIVO(sc)) {
   4105 			if (rcp->rc_number) {
   4106 				offset = AVIVO_D2CUR_SURFACE_ADDRESS;
   4107 				hvoff = AVIVO_D2CUR_HOT_SPOT;
   4108 				hvpos = AVIVO_D2CUR_POSITION;
   4109 				crtcoff = 0/*RADEON_CRTC_OFFSET*/;
   4110 			} else {
   4111 				offset = AVIVO_D1CUR_SURFACE_ADDRESS;
   4112 				hvoff = AVIVO_D1CUR_HOT_SPOT;
   4113 				hvpos = AVIVO_D1CUR_POSITION;
   4114 				crtcoff = 0/*RADEON_CRTC_OFFSET*/;
   4115 			}
   4116 			lock = 0;
   4117 		} else {
   4118 			if (rcp->rc_number) {
   4119 				offset = RADEON_CUR2_OFFSET;
   4120 				hvoff = RADEON_CUR2_HORZ_VERT_OFF;
   4121 				hvpos = RADEON_CUR2_HORZ_VERT_POSN;
   4122 				crtcoff = RADEON_CRTC2_OFFSET;
   4123 			} else {
   4124 				offset = RADEON_CUR_OFFSET;
   4125 				hvoff = RADEON_CUR_HORZ_VERT_OFF;
   4126 				hvpos = RADEON_CUR_HORZ_VERT_POSN;
   4127 				crtcoff = RADEON_CRTC_OFFSET;
   4128 			}
   4129 			lock = RADEON_CUR_LOCK;
   4130 		}
   4131 
   4132 		x = dp->rd_cursor.rc_pos.x;
   4133 		y = dp->rd_cursor.rc_pos.y;
   4134 
   4135 		while (y < rcp->rc_yoffset) {
   4136 			rcp->rc_yoffset -= RADEON_PANINCREMENT;
   4137 		}
   4138 		while (y >= (rcp->rc_yoffset + rcp->rc_videomode.vdisplay)) {
   4139 			rcp->rc_yoffset += RADEON_PANINCREMENT;
   4140 		}
   4141 		while (x < rcp->rc_xoffset) {
   4142 			rcp->rc_xoffset -= RADEON_PANINCREMENT;
   4143 		}
   4144 		while (x >= (rcp->rc_xoffset + rcp->rc_videomode.hdisplay)) {
   4145 			rcp->rc_xoffset += RADEON_PANINCREMENT;
   4146 		}
   4147 
   4148 		/* adjust for the cursor's hotspot */
   4149 		x -= dp->rd_cursor.rc_hot.x;
   4150 		y -= dp->rd_cursor.rc_hot.y;
   4151 		xoff = yoff = 0;
   4152 
   4153 		if (x >= dp->rd_virtx)
   4154 			x = dp->rd_virtx - 1;
   4155 		if (y >= dp->rd_virty)
   4156 			y = dp->rd_virty - 1;
   4157 
   4158 		/* now adjust cursor so it is relative to viewport */
   4159 		x -= rcp->rc_xoffset;
   4160 		y -= rcp->rc_yoffset;
   4161 
   4162 		/*
   4163 		 * no need to check for fall off, because we should
   4164 		 * never move off the screen entirely!
   4165 		 */
   4166 		coff = 0;
   4167 		if (x < 0) {
   4168 			xoff = -x;
   4169 			x = 0;
   4170 		}
   4171 		if (y < 0) {
   4172 			yoff = -y;
   4173 			y = 0;
   4174 			coff = (yoff * 2) * 8;
   4175 		}
   4176 
   4177 		/* pan the display */
   4178 		if (crtcoff != 0)
   4179 			PUT32(sc, crtcoff, (rcp->rc_yoffset * dp->rd_stride) +
   4180 			    rcp->rc_xoffset);
   4181 
   4182 		PUT32(sc, offset, (dp->rd_curoff + coff) | lock);
   4183 		PUT32(sc, hvoff, (xoff << 16) | (yoff) | lock);
   4184 		/* NB: this unlocks the cursor */
   4185 		PUT32(sc, hvpos, (x << 16) | y);
   4186 		if (IS_AVIVO(sc))
   4187 			CLR32(sc, AVIVO_D1CUR_UPDATE, AVIVO_D1CURSOR_UPDATE_LOCK);
   4188 	}
   4189 }
   4190 
   4191 static void
   4192 radeonfb_cursor_visible(struct radeonfb_display *dp)
   4193 {
   4194 	struct radeonfb_softc	*sc = dp->rd_softc;
   4195 	int		i;
   4196 	uint32_t	gencntl, bit;
   4197 
   4198 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   4199 		if (IS_AVIVO(sc)) {
   4200 			SET32(sc, AVIVO_D1CUR_UPDATE, AVIVO_D1CURSOR_UPDATE_LOCK);
   4201 			if (dp->rd_crtcs[i].rc_number) {
   4202 				gencntl = AVIVO_D2CUR_CONTROL;
   4203 				bit = AVIVO_D1CURSOR_EN | (2 << 8);
   4204 			} else {
   4205 				gencntl = AVIVO_D1CUR_CONTROL;
   4206 				bit = AVIVO_D1CURSOR_EN | (2 << 8);
   4207 			}
   4208 		} else {
   4209 			if (dp->rd_crtcs[i].rc_number) {
   4210 				gencntl = RADEON_CRTC2_GEN_CNTL;
   4211 				bit = RADEON_CRTC2_CUR_EN;
   4212 			} else {
   4213 				gencntl = RADEON_CRTC_GEN_CNTL;
   4214 				bit = RADEON_CRTC_CUR_EN;
   4215 			}
   4216 		}
   4217 		if (dp->rd_cursor.rc_visible)
   4218 			SET32(dp->rd_softc, gencntl, bit);
   4219 		else
   4220 			CLR32(dp->rd_softc, gencntl, bit);
   4221 		if (IS_AVIVO(sc))
   4222 			CLR32(sc, AVIVO_D1CUR_UPDATE, AVIVO_D1CURSOR_UPDATE_LOCK);
   4223 
   4224 	}
   4225 }
   4226 
   4227 static void
   4228 radeonfb_cursor_cmap(struct radeonfb_display *dp)
   4229 {
   4230 	int		i;
   4231 	uint32_t	c0reg, c1reg;
   4232 	struct radeonfb_softc	*sc = dp->rd_softc;
   4233 
   4234 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   4235 		if (dp->rd_crtcs[i].rc_number) {
   4236 			c0reg = RADEON_CUR2_CLR0;
   4237 			c1reg = RADEON_CUR2_CLR1;
   4238 		} else {
   4239 			c0reg = RADEON_CUR_CLR0;
   4240 			c1reg = RADEON_CUR_CLR1;
   4241 		}
   4242 
   4243 		PUT32(sc, c0reg, dp->rd_cursor.rc_cmap[0]);
   4244 		PUT32(sc, c1reg, dp->rd_cursor.rc_cmap[1]);
   4245 	}
   4246 }
   4247 
   4248 static void
   4249 radeonfb_cursor_update(struct radeonfb_display *dp, unsigned which)
   4250 {
   4251 	struct radeonfb_softc	*sc;
   4252 	int		i;
   4253 
   4254 	sc = dp->rd_softc;
   4255 
   4256 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   4257 		if (dp->rd_crtcs[i].rc_number) {
   4258 			if (IS_AVIVO(sc)) {
   4259 				SET32(sc, AVIVO_D2CUR_UPDATE, AVIVO_D1CURSOR_UPDATE_LOCK);
   4260 			} else
   4261 				SET32(sc, RADEON_CUR2_OFFSET, RADEON_CUR_LOCK);
   4262 		} else {
   4263 			if (IS_AVIVO(sc)) {
   4264 				SET32(sc, AVIVO_D1CUR_UPDATE, AVIVO_D1CURSOR_UPDATE_LOCK);
   4265 			} else
   4266 				SET32(sc, RADEON_CUR_OFFSET,RADEON_CUR_LOCK);
   4267 		}
   4268 	}
   4269 
   4270 	if (which & WSDISPLAY_CURSOR_DOCMAP) {
   4271 		if (IS_AVIVO(sc)) {
   4272 			/*
   4273 			 * we use an ARGB cursor here, so we need to rebuild
   4274 			 * the cursor image every time the palette changes
   4275 			 */
   4276 			radeonfb_avivo_cursor_shape(dp);
   4277 		} else
   4278 			radeonfb_cursor_cmap(dp);
   4279 	}
   4280 
   4281 	if (which & WSDISPLAY_CURSOR_DOSHAPE) {
   4282 		if (IS_AVIVO(sc)) {
   4283 			radeonfb_avivo_cursor_shape(dp);
   4284 		} else
   4285 			radeonfb_cursor_shape(dp);
   4286 	}
   4287 
   4288 	if (which & WSDISPLAY_CURSOR_DOCUR)
   4289 		radeonfb_cursor_visible(dp);
   4290 
   4291 	/* this one is unconditional, because it updates other stuff */
   4292 	radeonfb_cursor_position(dp);
   4293 }
   4294 
   4295 static struct videomode *
   4296 radeonfb_best_refresh(struct videomode *m1, struct videomode *m2)
   4297 {
   4298 	int	r1, r2;
   4299 
   4300 	/* otherwise pick the higher refresh rate */
   4301 	r1 = DIVIDE(DIVIDE(m1->dot_clock, m1->htotal), m1->vtotal);
   4302 	r2 = DIVIDE(DIVIDE(m2->dot_clock, m2->htotal), m2->vtotal);
   4303 
   4304 	return (r1 < r2 ? m2 : m1);
   4305 }
   4306 
   4307 static const struct videomode *
   4308 radeonfb_port_mode(struct radeonfb_softc *sc, struct radeonfb_port *rp,
   4309     int x, int y)
   4310 {
   4311 	struct edid_info	*ep = &rp->rp_edid;
   4312 	struct videomode	*vmp = NULL;
   4313 	int			i;
   4314 
   4315 	if (!rp->rp_edid_valid) {
   4316 		/* fallback to safe mode */
   4317 		return radeonfb_modelookup(sc->sc_defaultmode);
   4318 	}
   4319 
   4320 	/* always choose the preferred mode first! */
   4321 	if (ep->edid_preferred_mode) {
   4322 
   4323 		/* XXX: add auto-stretching support for native mode */
   4324 
   4325 		/* this may want panning to occur, btw */
   4326 		if ((ep->edid_preferred_mode->hdisplay <= x) &&
   4327 		    (ep->edid_preferred_mode->vdisplay <= y))
   4328 			return ep->edid_preferred_mode;
   4329 	}
   4330 
   4331 	for (i = 0; i < ep->edid_nmodes; i++) {
   4332 		/*
   4333 		 * We elect to pick a resolution that is too large for
   4334 		 * the monitor than one that is too small.  This means
   4335 		 * that we will prefer to pan rather than to try to
   4336 		 * center a smaller display on a larger screen.  In
   4337 		 * practice, this shouldn't matter because if a
   4338 		 * monitor can support a larger resolution, it can
   4339 		 * probably also support the smaller.  A specific
   4340 		 * exception is fixed format panels, but hopefully
   4341 		 * they are properly dealt with by the "autostretch"
   4342 		 * logic above.
   4343 		 */
   4344 		if ((ep->edid_modes[i].hdisplay > x) ||
   4345 		    (ep->edid_modes[i].vdisplay > y)) {
   4346 			continue;
   4347 		}
   4348 
   4349 		/*
   4350 		 * at this point, the display mode is no larger than
   4351 		 * what we've requested.
   4352 		 */
   4353 		if (vmp == NULL)
   4354 			vmp = &ep->edid_modes[i];
   4355 
   4356 		/* eliminate smaller modes */
   4357 		if ((vmp->hdisplay >= ep->edid_modes[i].hdisplay) ||
   4358 		    (vmp->vdisplay >= ep->edid_modes[i].vdisplay))
   4359 			continue;
   4360 
   4361 		if ((vmp->hdisplay < ep->edid_modes[i].hdisplay) ||
   4362 		    (vmp->vdisplay < ep->edid_modes[i].vdisplay)) {
   4363 			vmp = &ep->edid_modes[i];
   4364 			continue;
   4365 		}
   4366 
   4367 		KASSERT(vmp->hdisplay == ep->edid_modes[i].hdisplay);
   4368 		KASSERT(vmp->vdisplay == ep->edid_modes[i].vdisplay);
   4369 
   4370 		vmp = radeonfb_best_refresh(vmp, &ep->edid_modes[i]);
   4371 	}
   4372 
   4373 	return (vmp ? vmp : radeonfb_modelookup(sc->sc_defaultmode));
   4374 }
   4375 
   4376 static int
   4377 radeonfb_hasres(struct videomode *list, int nlist, int x, int y)
   4378 {
   4379 	int	i;
   4380 
   4381 	for (i = 0; i < nlist; i++) {
   4382 		if ((x == list[i].hdisplay) &&
   4383 		    (y == list[i].vdisplay)) {
   4384 			return 1;
   4385 		}
   4386 	}
   4387 	return 0;
   4388 }
   4389 
   4390 static void
   4391 radeonfb_pickres(struct radeonfb_display *dp, uint16_t *x, uint16_t *y,
   4392     int pan)
   4393 {
   4394 	struct radeonfb_port	*rp;
   4395 	struct edid_info	*ep;
   4396 	int			i, j;
   4397 
   4398 	*x = 0;
   4399 	*y = 0;
   4400 
   4401 	if (pan) {
   4402 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   4403 			rp = dp->rd_crtcs[i].rc_port;
   4404 			ep = &rp->rp_edid;
   4405 			if (!rp->rp_edid_valid) {
   4406 				/* monitor not present */
   4407 				continue;
   4408 			}
   4409 
   4410 			/*
   4411 			 * For now we are ignoring "conflict" that
   4412 			 * could occur when mixing some modes like
   4413 			 * 1280x1024 and 1400x800.  It isn't clear
   4414 			 * which is better, so the first one wins.
   4415 			 */
   4416 			for (j = 0; j < ep->edid_nmodes; j++) {
   4417 				/*
   4418 				 * ignore resolutions that are too big for
   4419 				 * the radeon
   4420 				 */
   4421 				if (ep->edid_modes[j].hdisplay >
   4422 				    dp->rd_softc->sc_maxx)
   4423 					continue;
   4424 				if (ep->edid_modes[j].vdisplay >
   4425 				    dp->rd_softc->sc_maxy)
   4426 					continue;
   4427 
   4428 				/*
   4429 				 * pick largest resolution, the
   4430 				 * smaller monitor will pan
   4431 				 */
   4432 				if ((ep->edid_modes[j].hdisplay >= *x) &&
   4433 				    (ep->edid_modes[j].vdisplay >= *y)) {
   4434 					*x = ep->edid_modes[j].hdisplay;
   4435 					*y = ep->edid_modes[j].vdisplay;
   4436 				}
   4437 			}
   4438 		}
   4439 
   4440 	} else {
   4441 		struct videomode	*modes;
   4442 		size_t			smodes;
   4443 		int			nmodes = 0;
   4444 		int			valid = 0;
   4445 
   4446 		smodes = sizeof(struct videomode) * 64;
   4447 		modes = kmem_alloc(smodes, KM_SLEEP);
   4448 
   4449 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   4450 			/*
   4451 			 * pick the largest resolution in common.
   4452 			 */
   4453 			rp = dp->rd_crtcs[i].rc_port;
   4454 			ep = &rp->rp_edid;
   4455 
   4456 			if (!rp->rp_edid_valid)
   4457 				continue;
   4458 
   4459 			if (!valid) {
   4460 				/*
   4461 				 * Pick the preferred mode for this port
   4462 				 * if available.
   4463 				 */
   4464 				if (ep->edid_preferred_mode) {
   4465 					struct videomode *vmp =
   4466 						ep->edid_preferred_mode;
   4467 
   4468 					if ((vmp->hdisplay <=
   4469 					     dp->rd_softc->sc_maxx) &&
   4470 					    (vmp->vdisplay <=
   4471 					     dp->rd_softc->sc_maxy))
   4472 						modes[nmodes++] = *vmp;
   4473 				} else {
   4474 
   4475 					/* initialize starting list */
   4476 					for (j = 0; j < ep->edid_nmodes; j++) {
   4477 						/*
   4478 						 * ignore resolutions that are
   4479 						 * too big for the radeon
   4480 						 */
   4481 						if (ep->edid_modes[j].hdisplay >
   4482 						    dp->rd_softc->sc_maxx)
   4483 							continue;
   4484 						if (ep->edid_modes[j].vdisplay >
   4485 						    dp->rd_softc->sc_maxy)
   4486 							continue;
   4487 
   4488 						modes[nmodes] =
   4489 							ep->edid_modes[j];
   4490 						nmodes++;
   4491 					}
   4492 				}
   4493 				valid = 1;
   4494 			} else {
   4495 				/* merge into preexisting list */
   4496 				for (j = 0; j < nmodes; j++) {
   4497 					if (!radeonfb_hasres(ep->edid_modes,
   4498 						ep->edid_nmodes,
   4499 						modes[j].hdisplay,
   4500 						modes[j].vdisplay)) {
   4501 						modes[j] = modes[nmodes];
   4502 						j--;
   4503 						nmodes--;
   4504 					}
   4505 				}
   4506 			}
   4507 		}
   4508 
   4509 		/* now we have to pick from the merged list */
   4510 		for (i = 0; i < nmodes; i++) {
   4511 			if ((modes[i].hdisplay >= *x) &&
   4512 			    (modes[i].vdisplay >= *y)) {
   4513 				*x = modes[i].hdisplay;
   4514 				*y = modes[i].vdisplay;
   4515 			}
   4516 		}
   4517 		kmem_free(modes, smodes);
   4518 
   4519 	}
   4520 
   4521 	if ((*x == 0) || (*y == 0)) {
   4522 		/* fallback to safe mode */
   4523 		*x = 640;
   4524 		*y = 480;
   4525 	}
   4526 }
   4527 
   4528 /*
   4529  * backlight levels are linear on:
   4530  * - RV200, RV250, RV280, RV350
   4531  * - but NOT on PowerBook4,3 6,3 6,5
   4532  * according to Linux' radeonfb
   4533  */
   4534 
   4535 /* Get the current backlight level for the display.  */
   4536 
   4537 static int
   4538 radeonfb_get_backlight(struct radeonfb_display *dp)
   4539 {
   4540 	int s;
   4541 	uint32_t level;
   4542 
   4543 	s = spltty();
   4544 
   4545 	level = radeonfb_get32(dp->rd_softc, RADEON_LVDS_GEN_CNTL);
   4546 	level &= RADEON_LVDS_BL_MOD_LEV_MASK;
   4547 	level >>= RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4548 
   4549 	/*
   4550 	 * On some chips, we should negate the backlight level.
   4551 	 * XXX Find out on which chips.
   4552 	 */
   4553 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT)
   4554 	level = RADEONFB_BACKLIGHT_MAX - level;
   4555 
   4556 	splx(s);
   4557 
   4558 	return level;
   4559 }
   4560 
   4561 /* Set the backlight to the given level for the display.  */
   4562 static void
   4563 radeonfb_switch_backlight(struct radeonfb_display *dp, int on)
   4564 {
   4565 	if (dp->rd_bl_on == on)
   4566 		return;
   4567 	dp->rd_bl_on = on;
   4568 	radeonfb_set_backlight(dp, dp->rd_bl_level);
   4569 }
   4570 
   4571 static int
   4572 radeonfb_set_backlight(struct radeonfb_display *dp, int level)
   4573 {
   4574 	struct radeonfb_softc *sc = dp->rd_softc;
   4575 	int rlevel, s;
   4576 	uint32_t lvds;
   4577 
   4578 	if(!sc->sc_mapped)
   4579 		return 0;
   4580 
   4581 	s = spltty();
   4582 
   4583 	dp->rd_bl_level = level;
   4584 	if (dp->rd_bl_on == 0)
   4585 		level = 0;
   4586 
   4587 	if (level < 0)
   4588 		level = 0;
   4589 	else if (level >= RADEONFB_BACKLIGHT_MAX)
   4590 		level = RADEONFB_BACKLIGHT_MAX;
   4591 
   4592 	/* On some chips, we should negate the backlight level. */
   4593 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT) {
   4594 		rlevel = RADEONFB_BACKLIGHT_MAX - level;
   4595 	} else
   4596 	rlevel = level;
   4597 
   4598 	callout_stop(&dp->rd_bl_lvds_co);
   4599 	//radeonfb_engine_idle(sc);
   4600 
   4601 	/*
   4602 	 * Turn off the display if the backlight is set to 0, since the
   4603 	 * display is useless without backlight anyway.
   4604 	 */
   4605 	if (level == 0)
   4606 		radeonfb_blank(dp, 1);
   4607 	else if (radeonfb_get_backlight(dp) == 0)
   4608 		radeonfb_blank(dp, 0);
   4609 
   4610 	lvds = radeonfb_get32(sc, RADEON_LVDS_GEN_CNTL);
   4611 	lvds &= ~RADEON_LVDS_DISPLAY_DIS;
   4612 	if (!(lvds & RADEON_LVDS_BLON) || !(lvds & RADEON_LVDS_ON)) {
   4613 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_DIGON;
   4614 		lvds |= RADEON_LVDS_BLON | RADEON_LVDS_EN;
   4615 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   4616 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   4617 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4618 		lvds |= RADEON_LVDS_ON;
   4619 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_BL_MOD_EN;
   4620 	} else {
   4621 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   4622 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4623 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   4624 	}
   4625 
   4626 	dp->rd_bl_lvds_val &= ~RADEON_LVDS_STATE_MASK;
   4627 	dp->rd_bl_lvds_val |= lvds & RADEON_LVDS_STATE_MASK;
   4628 	/* XXX What is the correct delay? */
   4629 	callout_schedule(&dp->rd_bl_lvds_co, 200 * hz);
   4630 
   4631 	splx(s);
   4632 
   4633 	return 0;
   4634 }
   4635 
   4636 /*
   4637  * Callout function for delayed operations on the LVDS_GEN_CNTL register.
   4638  * Set the delayed bits in the register, and clear the stored delayed
   4639  * value.
   4640  */
   4641 
   4642 static void radeonfb_lvds_callout(void *arg)
   4643 {
   4644 	struct radeonfb_display *dp = arg;
   4645 	int s;
   4646 
   4647 	s = splhigh();
   4648 
   4649 	radeonfb_mask32(dp->rd_softc, RADEON_LVDS_GEN_CNTL, ~0,
   4650 			dp->rd_bl_lvds_val);
   4651 	dp->rd_bl_lvds_val = 0;
   4652 
   4653 	splx(s);
   4654 }
   4655 
   4656 static void
   4657 radeonfb_brightness_up(device_t dev)
   4658 {
   4659 	struct radeonfb_softc *sc = device_private(dev);
   4660 	struct radeonfb_display *dp = &sc->sc_displays[0];
   4661 	int level;
   4662 
   4663 	/* we assume the main display is the first one - need a better way */
   4664 	if (sc->sc_ndisplays < 1) return;
   4665 	/* make sure pushing the hotkeys always has an effect */
   4666 	dp->rd_bl_on = 1;
   4667 	level = dp->rd_bl_level;
   4668 	level = uimin(RADEONFB_BACKLIGHT_MAX, level + 5);
   4669 	radeonfb_set_backlight(dp, level);
   4670 }
   4671 
   4672 static void
   4673 radeonfb_brightness_down(device_t dev)
   4674 {
   4675 	struct radeonfb_softc *sc = device_private(dev);
   4676 	struct radeonfb_display *dp = &sc->sc_displays[0];
   4677 	int level;
   4678 
   4679 	/* we assume the main display is the first one - need a better way */
   4680 	if (sc->sc_ndisplays < 1) return;
   4681 	/* make sure pushing the hotkeys always has an effect */
   4682 	dp->rd_bl_on = 1;
   4683 	level = dp->rd_bl_level;
   4684 	level = uimax(0, level - 5);
   4685 	radeonfb_set_backlight(dp, level);
   4686 }
   4687