Home | History | Annotate | Line # | Download | only in pci
radeonfb.c revision 1.110
      1 /*	$NetBSD: radeonfb.c,v 1.110 2020/09/28 05:43:58 macallan Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2006 Itronix Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Garrett D'Amore for Itronix Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. The name of Itronix Inc. may not be used to endorse
     18  *    or promote products derived from this software without specific
     19  *    prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND ANY EXPRESS
     22  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     23  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
     25  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
     27  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     30  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     31  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 /*
     35  * ATI Technologies Inc. ("ATI") has not assisted in the creation of, and
     36  * does not endorse, this software.  ATI will not be responsible or liable
     37  * for any actual or alleged damage or loss caused by or in connection with
     38  * the use of or reliance on this software.
     39  */
     40 
     41 /*
     42  * Portions of this code were taken from XFree86's Radeon driver, which bears
     43  * this notice:
     44  *
     45  * Copyright 2000 ATI Technologies Inc., Markham, Ontario, and
     46  *                VA Linux Systems Inc., Fremont, California.
     47  *
     48  * All Rights Reserved.
     49  *
     50  * Permission is hereby granted, free of charge, to any person obtaining
     51  * a copy of this software and associated documentation files (the
     52  * "Software"), to deal in the Software without restriction, including
     53  * without limitation on the rights to use, copy, modify, merge,
     54  * publish, distribute, sublicense, and/or sell copies of the Software,
     55  * and to permit persons to whom the Software is furnished to do so,
     56  * subject to the following conditions:
     57  *
     58  * The above copyright notice and this permission notice (including the
     59  * next paragraph) shall be included in all copies or substantial
     60  * portions of the Software.
     61  *
     62  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     63  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     64  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     65  * NON-INFRINGEMENT.  IN NO EVENT SHALL ATI, VA LINUX SYSTEMS AND/OR
     66  * THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
     67  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     68  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     69  * DEALINGS IN THE SOFTWARE.
     70  */
     71 
     72 #include <sys/cdefs.h>
     73 __KERNEL_RCSID(0, "$NetBSD: radeonfb.c,v 1.110 2020/09/28 05:43:58 macallan Exp $");
     74 
     75 #include <sys/param.h>
     76 #include <sys/systm.h>
     77 #include <sys/device.h>
     78 #include <sys/malloc.h>
     79 #include <sys/bus.h>
     80 #include <sys/kernel.h>
     81 #include <sys/lwp.h>
     82 #include <sys/kauth.h>
     83 #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 		PRINTREG(RADEON_PIXCLKS_CNTL);
    594 		PRINTREG(RADEON_CRTC_H_SYNC_STRT_WID);
    595 		PRINTREG(RADEON_FP_H_SYNC_STRT_WID);
    596 		PRINTREG(RADEON_CRTC2_H_SYNC_STRT_WID);
    597 		PRINTREG(RADEON_FP_H2_SYNC_STRT_WID);
    598 	}
    599 /*
    600  * XXX
    601  * This was if (IS_RV100()), which is set for all pre-R3xx chips.
    602  * I suspect this only makes sense on Sun XVR-100 with firmware that doesn't
    603  * support DVI, so for now let's restrict it to only actual RV100
    604  */
    605 	if (sc->sc_family == RADEON_RV100)
    606 		PUT32(sc, RADEON_TMDS_PLL_CNTL, 0xa27);
    607 
    608 	/* XXX
    609 	 * according to xf86-video-radeon R3xx has this bit backwards
    610 	 */
    611 	if (IS_R300(sc)) {
    612 		PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    613 		    0,
    614 		    ~(RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST));
    615 	} else {
    616 		PATCH32(sc, RADEON_TMDS_TRANSMITTER_CNTL,
    617 		    RADEON_TMDS_TRANSMITTER_PLLEN,
    618 		    ~(RADEON_TMDS_TRANSMITTER_PLLEN | RADEON_TMDS_TRANSMITTER_PLLRST));
    619 	}
    620 
    621 	radeonfb_i2c_init(sc);
    622 
    623 	radeonfb_loadbios(sc, pa);
    624 
    625 #ifdef	RADEONFB_BIOS_INIT
    626 	if (radeonfb_bios_init(sc)) {
    627 		aprint_error("%s: BIOS inititialization failed\n", XNAME(sc));
    628 	}
    629 #endif
    630 
    631 	if (radeonfb_getclocks(sc)) {
    632 		aprint_error("%s: Unable to get reference clocks from BIOS\n",
    633 		    XNAME(sc));
    634 		goto error;
    635 	}
    636 
    637 	if (radeonfb_gettmds(sc)) {
    638 		aprint_error("%s: Unable to identify TMDS PLL settings\n",
    639 		    XNAME(sc));
    640 		goto error;
    641 	}
    642 
    643 	aprint_verbose("%s: refclk = %d.%03d MHz, refdiv = %d "
    644 	    "minpll = %d, maxpll = %d\n", XNAME(sc),
    645 	    (int)sc->sc_refclk / 1000, (int)sc->sc_refclk % 1000,
    646 	    (int)sc->sc_refdiv, (int)sc->sc_minpll, (int)sc->sc_maxpll);
    647 
    648 	radeonfb_getconnectors(sc);
    649 
    650 	radeonfb_set_fbloc(sc);
    651 
    652 	/* 64 MB should be enough -- more just wastes map entries */
    653 	if (sc->sc_memsz > (64 << 20))
    654 		sc->sc_memsz = (64 << 20);
    655 
    656 	for (i = 0; radeonfb_limits[i].size; i++) {
    657 		if (sc->sc_memsz >= radeonfb_limits[i].size) {
    658 			sc->sc_maxx = radeonfb_limits[i].maxx;
    659 			sc->sc_maxy = radeonfb_limits[i].maxy;
    660 			sc->sc_maxbpp = radeonfb_limits[i].maxbpp;
    661 			/* framebuffer offset, start at a 4K page */
    662 			sc->sc_fboffset = sc->sc_memsz /
    663 			    radeonfb_limits[i].maxdisp;
    664 			/*
    665 			 * we use the fbsize to figure out where we can store
    666 			 * things like cursor data.
    667 			 */
    668 			sc->sc_fbsize =
    669 			    ROUNDUP(ROUNDUP(sc->sc_maxx * sc->sc_maxbpp / 8 ,
    670 					RADEON_STRIDEALIGN) * sc->sc_maxy,
    671 				4096);
    672 			break;
    673 		}
    674 	}
    675 
    676 
    677 	radeonfb_init_misc(sc);
    678 
    679 	/* program the DAC wirings */
    680 	for (i = 0; i < (HAS_CRTC2(sc) ? 2 : 1); i++) {
    681 		switch (sc->sc_ports[i].rp_dac_type) {
    682 		case RADEON_DAC_PRIMARY:
    683 			PATCH32(sc, RADEON_DAC_CNTL2,
    684 			    i ? RADEON_DAC2_DAC_CLK_SEL : 0,
    685 			    ~RADEON_DAC2_DAC_CLK_SEL);
    686 			break;
    687 		case RADEON_DAC_TVDAC:
    688 			/* we always use the TVDAC to drive a secondary analog
    689 			 * CRT for now.  if we ever support TV-out this will
    690 			 * have to change.
    691 			 */
    692 			SET32(sc, RADEON_DAC_CNTL2,
    693 			    RADEON_DAC2_DAC2_CLK_SEL);
    694 			PATCH32(sc, RADEON_DISP_HW_DEBUG,
    695 			    i ? 0 : RADEON_CRT2_DISP1_SEL,
    696 			    ~RADEON_CRT2_DISP1_SEL);
    697 			/* we're using CRTC2 for the 2nd port */
    698 			if (sc->sc_ports[i].rp_number == 1) {
    699 				PATCH32(sc, RADEON_DISP_OUTPUT_CNTL,
    700 				    RADEON_DISP_DAC2_SOURCE_CRTC2,
    701 				    ~RADEON_DISP_DAC2_SOURCE_MASK);
    702 			}
    703 
    704 			break;
    705 		}
    706 		DPRINTF(("%s: port %d tmds type %d\n", __func__, i,
    707 		    sc->sc_ports[i].rp_tmds_type));
    708 		switch (sc->sc_ports[i].rp_tmds_type) {
    709 		case RADEON_TMDS_INT:
    710 			/* point FP0 at the CRTC this port uses */
    711 			DPRINTF(("%s: plugging internal TMDS into CRTC %d\n",
    712 			    __func__, sc->sc_ports[i].rp_number));
    713 			if (IS_R300(sc)) {
    714 				PATCH32(sc, RADEON_FP_GEN_CNTL,
    715 				    sc->sc_ports[i].rp_number ?
    716 				      R200_FP_SOURCE_SEL_CRTC2 :
    717 				      R200_FP_SOURCE_SEL_CRTC1,
    718 				    ~R200_FP_SOURCE_SEL_MASK);
    719 			} else {
    720 				PATCH32(sc, RADEON_FP_GEN_CNTL,
    721 				    sc->sc_ports[i].rp_number ?
    722 				      RADEON_FP_SEL_CRTC2 :
    723 				      RADEON_FP_SEL_CRTC1,
    724 				    ~RADEON_FP_SEL_MASK);
    725 			}
    726 			break;
    727 		case RADEON_TMDS_EXT:
    728 			/* point FP2 at the CRTC this port uses */
    729 			DPRINTF(("%s: plugging external TMDS into CRTC %d\n",
    730 			    __func__, sc->sc_ports[i].rp_number));
    731 			if (IS_R300(sc)) {
    732 				PATCH32(sc, RADEON_FP2_GEN_CNTL,
    733 				    sc->sc_ports[i].rp_number ?
    734 				      R200_FP2_SOURCE_SEL_CRTC2 :
    735 				      R200_FP2_SOURCE_SEL_CRTC1,
    736 				    ~R200_FP2_SOURCE_SEL_CRTC2);
    737 			} else {
    738 				PATCH32(sc, RADEON_FP2_GEN_CNTL,
    739 				    sc->sc_ports[i].rp_number ?
    740 				      RADEON_FP2_SRC_SEL_CRTC2 :
    741 				      RADEON_FP2_SRC_SEL_CRTC1,
    742 				    ~RADEON_FP2_SRC_SEL_CRTC2);
    743 			}
    744 			break;
    745 		}
    746 	}
    747 	PRINTREG(RADEON_DAC_CNTL2);
    748 	PRINTREG(RADEON_DISP_HW_DEBUG);
    749 
    750 	PRINTREG(RADEON_DAC_CNTL);
    751 	/* other DAC programming */
    752 	v = GET32(sc, RADEON_DAC_CNTL);
    753 	v &= (RADEON_DAC_RANGE_CNTL_MASK | RADEON_DAC_BLANKING);
    754 	v |= RADEON_DAC_MASK_ALL | RADEON_DAC_8BIT_EN;
    755 	PUT32(sc, RADEON_DAC_CNTL, v);
    756 	PRINTREG(RADEON_DAC_CNTL);
    757 
    758 	/* XXX: this may need more investigation */
    759 	PUT32(sc, RADEON_TV_DAC_CNTL, 0x00280203);
    760 	PRINTREG(RADEON_TV_DAC_CNTL);
    761 
    762 	/* enable TMDS */
    763 	SET32(sc, RADEON_FP_GEN_CNTL,
    764 	    RADEON_FP_TMDS_EN |
    765 		RADEON_FP_CRTC_DONT_SHADOW_VPAR |
    766 		RADEON_FP_CRTC_DONT_SHADOW_HEND);
    767 	/*
    768 	 * XXX
    769 	 * no idea why this is necessary - if I do not clear this bit on my
    770 	 * iBook G4 the screen remains black, even though it's already clear.
    771 	 * It needs to be set on my Sun XVR-100 for the DVI port to work
    772 	 * TODO:
    773 	 * see if this is still necessary now that CRTCs, DACs and outputs are
    774 	 * getting wired up in a halfway sane way
    775 	 */
    776 	if (sc->sc_fp_gen_cntl & RADEON_FP_SEL_CRTC2) {
    777 		SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    778 	} else {
    779 		CLR32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_SEL_CRTC2);
    780 	}
    781 
    782 	/*
    783 	 * we use bus_space_map instead of pci_mapreg, because we don't
    784 	 * need the full aperature space.  no point in wasting virtual
    785 	 * address space we don't intend to use, right?
    786 	 */
    787 	if ((sc->sc_memsz < (4096 * 1024)) ||
    788 	    (pci_mapreg_info(sc->sc_pc, sc->sc_pt, RADEON_MAPREG_VRAM,
    789 		PCI_MAPREG_TYPE_MEM, &sc->sc_memaddr, &bsz, NULL) != 0) ||
    790 	    (bsz < sc->sc_memsz)) {
    791 		sc->sc_memsz = 0;
    792 		aprint_error("%s: Bad frame buffer configuration\n",
    793 		    XNAME(sc));
    794 		goto error;
    795 	}
    796 
    797 	sc->sc_memt = pa->pa_memt;
    798 	if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
    799 		BUS_SPACE_MAP_LINEAR, &sc->sc_memh) != 0) {
    800 		sc->sc_memsz = 0;
    801 		aprint_error("%s: Unable to map frame buffer\n", XNAME(sc));
    802 		goto error;
    803 	}
    804 
    805 	aprint_normal("%s: %d MB aperture at 0x%08x, "
    806 	    "%d KB registers at 0x%08x\n", XNAME(sc),
    807 	    (int)sc->sc_memsz >> 20, (unsigned)sc->sc_memaddr,
    808 	    (int)sc->sc_regsz >> 10, (unsigned)sc->sc_regaddr);
    809 
    810 	/* setup default video mode from devprop (allows PROM override) */
    811 	sc->sc_defaultmode = radeonfb_default_mode;
    812 	if (prop_dictionary_get_cstring_nocopy(device_properties(sc->sc_dev),
    813 	    "videomode", &mptr)) {
    814 
    815 		strncpy(sc->sc_modebuf, mptr, sizeof(sc->sc_modebuf));
    816 		sc->sc_defaultmode = sc->sc_modebuf;
    817 	}
    818 
    819 	/* initialize some basic display parameters */
    820 	for (i = 0; i < sc->sc_ndisplays; i++) {
    821 		struct radeonfb_display *dp = &sc->sc_displays[i];
    822 		struct rasops_info *ri;
    823 		long defattr;
    824 		struct wsemuldisplaydev_attach_args aa;
    825 
    826 		/*
    827 		 * Figure out how many "displays" (desktops) we are going to
    828 		 * support.  If more than one, then each CRTC gets its own
    829 		 * programming.
    830 		 *
    831 		 * XXX: this code needs to change to support mergedfb.
    832 		 * XXX: would be nice to allow this to be overridden
    833 		 */
    834 		if (HAS_CRTC2(sc) && (sc->sc_ndisplays == 1)) {
    835 			DPRINTF(("dual crtcs!\n"));
    836 			dp->rd_ncrtcs = 2;
    837 			dp->rd_crtcs[0].rc_port =
    838 			    &sc->sc_ports[0];
    839 			dp->rd_crtcs[0].rc_number = sc->sc_ports[0].rp_number;
    840 			dp->rd_crtcs[1].rc_port =
    841 			    &sc->sc_ports[1];
    842 			dp->rd_crtcs[1].rc_number = sc->sc_ports[1].rp_number;
    843 		} else {
    844 			dp->rd_ncrtcs = 1;
    845 			dp->rd_crtcs[0].rc_port =
    846 			    &sc->sc_ports[i];
    847 			dp->rd_crtcs[0].rc_number = sc->sc_ports[i].rp_number;
    848 		}
    849 
    850 		dp->rd_softc = sc;
    851 		dp->rd_wsmode = WSDISPLAYIO_MODE_EMUL;
    852 		dp->rd_bpp = RADEONFB_DEFAULT_DEPTH;	/* XXX */
    853 
    854 		/* for text mode, we pick a resolution that won't
    855 		 * require panning */
    856 		radeonfb_pickres(dp, &dp->rd_virtx, &dp->rd_virty, 0);
    857 
    858 		aprint_normal("%s: display %d: "
    859 		    "initial virtual resolution %dx%d at %d bpp\n",
    860 		    XNAME(sc), i, dp->rd_virtx, dp->rd_virty, dp->rd_bpp);
    861 		aprint_normal_dev(sc->sc_dev, "using %d MB per display\n",
    862 		    sc->sc_fboffset >> 20);
    863 		/* now select the *video mode* that we will use */
    864 		for (j = 0; j < dp->rd_ncrtcs; j++) {
    865 			const struct videomode *vmp;
    866 			vmp = radeonfb_port_mode(sc, dp->rd_crtcs[j].rc_port,
    867 			    dp->rd_virtx, dp->rd_virty);
    868 
    869 			/*
    870 			 * virtual resolution should be at least as high as
    871 			 * physical
    872 			 */
    873 			if (dp->rd_virtx < vmp->hdisplay ||
    874 			    dp->rd_virty < vmp->vdisplay) {
    875 				dp->rd_virtx = vmp->hdisplay;
    876 				dp->rd_virty = vmp->vdisplay;
    877 			}
    878 
    879 			dp->rd_crtcs[j].rc_videomode = *vmp;
    880 			printf("%s: port %d: physical %dx%d %dHz\n",
    881 			    XNAME(sc), j, vmp->hdisplay, vmp->vdisplay,
    882 			    DIVIDE(DIVIDE(vmp->dot_clock * 1000,
    883 				       vmp->htotal), vmp->vtotal));
    884 		}
    885 
    886 		/* N.B.: radeon wants 64-byte aligned stride */
    887 		dp->rd_stride = dp->rd_virtx * dp->rd_bpp / 8;
    888 		dp->rd_stride = ROUNDUP(dp->rd_stride, RADEON_STRIDEALIGN);
    889 
    890 		dp->rd_offset = sc->sc_fboffset * i;
    891 		dp->rd_fbptr = (vaddr_t)bus_space_vaddr(sc->sc_memt,
    892 		    sc->sc_memh) + dp->rd_offset;
    893 		dp->rd_curoff = sc->sc_fboffset - 16384; /* 16KB cursor space */
    894 		dp->rd_curptr = dp->rd_fbptr + dp->rd_curoff;
    895 
    896 		DPRINTF(("fpbtr = %p\n", (void *)dp->rd_fbptr));
    897 
    898 		switch (dp->rd_bpp) {
    899 		case 8:
    900 			dp->rd_format = 2;
    901 			break;
    902 		case 32:
    903 			dp->rd_format = 6;
    904 			break;
    905 		default:
    906 			aprint_error("%s: bad depth %d\n", XNAME(sc),
    907 			    dp->rd_bpp);
    908 			goto error;
    909 		}
    910 		DPRINTF(("init engine\n"));
    911 		/* XXX: this seems suspicious - per display engine
    912 		   initialization? */
    913 
    914 		radeonfb_modeswitch(dp);
    915 		radeonfb_engine_init(dp);
    916 
    917 		/* copy the template into place */
    918 		dp->rd_wsscreens_storage[0] = radeonfb_stdscreen;
    919 		dp->rd_wsscreens = dp->rd_wsscreens_storage;
    920 
    921 		/* and make up the list */
    922 		dp->rd_wsscreenlist.nscreens = 1;
    923 		dp->rd_wsscreenlist.screens = (void *)&dp->rd_wsscreens;
    924 
    925 		vcons_init(&dp->rd_vd, dp, dp->rd_wsscreens,
    926 		    &radeonfb_accessops);
    927 
    928 		dp->rd_vd.init_screen = radeonfb_init_screen;
    929 
    930 #ifdef RADEONFB_DEBUG
    931 		dp->rd_virty -= 200;
    932 #endif
    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 
   1019 		radeonfb_blank(dp, 0);
   1020 
   1021 		/* Initialise delayed lvds operations for backlight. */
   1022 		callout_init(&dp->rd_bl_lvds_co, 0);
   1023 		callout_setfunc(&dp->rd_bl_lvds_co,
   1024 				radeonfb_lvds_callout, dp);
   1025 
   1026 		dp->rd_bl_on = 1;
   1027 		if (sc->sc_flags & RFB_MOB) {
   1028 			dp->rd_bl_level = radeonfb_get_backlight(dp);
   1029 		} else
   1030 			dp->rd_bl_level = 128;
   1031 
   1032 		radeonfb_set_backlight(dp, dp->rd_bl_level);
   1033 	}
   1034 	for (i = 0; i < RADEON_NDISPLAYS; i++)
   1035 		radeonfb_init_palette(&sc->sc_displays[i]);
   1036 
   1037 	if (HAS_CRTC2(sc) && !IS_AVIVO(sc)) {
   1038 		CLR32(sc, RADEON_CRTC2_GEN_CNTL, RADEON_CRTC2_DISP_DIS);
   1039 	}
   1040 
   1041 	if (!IS_AVIVO(sc)) {
   1042 		CLR32(sc, RADEON_CRTC_EXT_CNTL, RADEON_CRTC_DISPLAY_DIS);
   1043 		SET32(sc, RADEON_FP_GEN_CNTL, RADEON_FP_FPON);
   1044 	}
   1045 
   1046 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_UP,
   1047 	    radeonfb_brightness_up, TRUE);
   1048 	pmf_event_register(dev, PMFE_DISPLAY_BRIGHTNESS_DOWN,
   1049 	    radeonfb_brightness_down, TRUE);
   1050 
   1051 	/*
   1052 	 * if we attach a DRM we need to unmap registers in
   1053 	 * WSDISPLAYIO_MODE_MAPPED, since this keeps us from doing things like
   1054 	 * screen blanking we only do it if needed
   1055 	 */
   1056 	sc->sc_needs_unmap =
   1057 	    (config_found_ia(dev, "drm", aux, radeonfb_drm_print) != 0);
   1058 	DPRINTF(("needs_unmap: %d\n", sc->sc_needs_unmap));
   1059 
   1060 	if (!IS_AVIVO(sc)) {
   1061 		PRINTREG(RADEON_CRTC_EXT_CNTL);
   1062 		PRINTREG(RADEON_CRTC_GEN_CNTL);
   1063 		PRINTREG(RADEON_CRTC2_GEN_CNTL);
   1064 		PRINTREG(RADEON_DISP_OUTPUT_CNTL);
   1065 		PRINTREG(RADEON_DAC_CNTL2);
   1066 		PRINTREG(RADEON_FP_GEN_CNTL);
   1067 		PRINTREG(RADEON_FP2_GEN_CNTL);
   1068 		PRINTREG(RADEON_TMDS_CNTL);
   1069 		PRINTREG(RADEON_TMDS_TRANSMITTER_CNTL);
   1070 		PRINTREG(RADEON_TMDS_PLL_CNTL);
   1071 		PRINTREG(RADEON_PIXCLKS_CNTL);
   1072 	}
   1073 	return;
   1074 
   1075 error:
   1076 	if (sc->sc_biossz)
   1077 		free(sc->sc_bios, M_DEVBUF);
   1078 
   1079 	if (sc->sc_regsz)
   1080 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
   1081 
   1082 	if (sc->sc_memsz)
   1083 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
   1084 }
   1085 
   1086 static void
   1087 radeonfb_map(struct radeonfb_softc *sc)
   1088 {
   1089 	if (!sc->sc_mapped) {
   1090 		if (bus_space_map(sc->sc_regt, sc->sc_regaddr, sc->sc_regsz, 0,
   1091 		    &sc->sc_regh) != 0) {
   1092 			aprint_error_dev(sc->sc_dev,
   1093 			    "unable to map registers!\n");
   1094 			return;
   1095 		}
   1096 		if (bus_space_map(sc->sc_memt, sc->sc_memaddr, sc->sc_memsz,
   1097 		    BUS_SPACE_MAP_LINEAR, &sc->sc_memh) != 0) {
   1098 			sc->sc_memsz = 0;
   1099 			aprint_error_dev(sc->sc_dev,
   1100 			    "Unable to map frame buffer\n");
   1101 			return;
   1102 		}
   1103 		sc->sc_mapped = TRUE;
   1104 	}
   1105 }
   1106 
   1107 static void
   1108 radeonfb_unmap(struct radeonfb_softc *sc)
   1109 {
   1110 	if (!sc->sc_needs_unmap)
   1111 		return;
   1112 
   1113 	if (sc->sc_mapped) {
   1114 		bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsz);
   1115 		bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsz);
   1116 		sc->sc_mapped = FALSE;
   1117 	}
   1118 }
   1119 
   1120 static int
   1121 radeonfb_drm_print(void *aux, const char *pnp)
   1122 {
   1123 	if (pnp)
   1124 		aprint_normal("drm at %s", pnp);
   1125 	return (UNCONF);
   1126 }
   1127 
   1128 int
   1129 radeonfb_ioctl(void *v, void *vs,
   1130     unsigned long cmd, void *d, int flag, struct lwp *l)
   1131 {
   1132 	struct vcons_data	*vd;
   1133 	struct radeonfb_display	*dp;
   1134 	struct radeonfb_softc	*sc;
   1135 	struct wsdisplay_param  *param;
   1136 	struct vcons_screen 	*ms;
   1137 
   1138 	vd = (struct vcons_data *)v;
   1139 	ms = vd->active;
   1140 	dp = (struct radeonfb_display *)vd->cookie;
   1141 	sc = dp->rd_softc;
   1142 
   1143 	/* can't do these without registers being mapped */
   1144 	if (!sc->sc_mapped) {
   1145 		switch (cmd) {
   1146 			case WSDISPLAYIO_GVIDEO:
   1147 			case WSDISPLAYIO_SVIDEO:
   1148 			case WSDISPLAYIO_GETCMAP:
   1149 			case WSDISPLAYIO_PUTCMAP:
   1150 			case WSDISPLAYIO_SCURSOR:
   1151 			case WSDISPLAYIO_GCURPOS:
   1152 			case WSDISPLAYIO_SCURPOS:
   1153 			case WSDISPLAYIO_SETPARAM:
   1154 				return EINVAL;
   1155 		}
   1156 	}
   1157 
   1158 	switch (cmd) {
   1159 	case WSDISPLAYIO_GTYPE:
   1160 		*(unsigned *)d = WSDISPLAY_TYPE_PCIMISC;
   1161 		return 0;
   1162 
   1163 	case WSDISPLAYIO_GINFO:
   1164 		if (vd->active != NULL) {
   1165 			struct wsdisplay_fbinfo *fb;
   1166 			fb = (struct wsdisplay_fbinfo *)d;
   1167 			fb->width = dp->rd_virtx;
   1168 			fb->height = dp->rd_virty;
   1169 			fb->depth = dp->rd_bpp;
   1170 			fb->cmsize = 256;
   1171 			return 0;
   1172 		} else
   1173 			return ENODEV;
   1174 	case WSDISPLAYIO_GVIDEO:
   1175 		if (radeonfb_isblank(dp))
   1176 			*(unsigned *)d = WSDISPLAYIO_VIDEO_OFF;
   1177 		else
   1178 			*(unsigned *)d = WSDISPLAYIO_VIDEO_ON;
   1179 		return 0;
   1180 
   1181 	case WSDISPLAYIO_SVIDEO:
   1182 		if (dp->rd_wsmode != WSDISPLAYIO_MODE_MAPPED) {
   1183 			radeonfb_blank(dp,
   1184 			    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_OFF));
   1185 			radeonfb_switch_backlight(dp,
   1186 			    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_ON));
   1187 		}
   1188 		pmf_event_inject(NULL,
   1189 		    (*(unsigned int *)d == WSDISPLAYIO_VIDEO_ON) ?
   1190 		     PMFE_DISPLAY_ON : PMFE_DISPLAY_OFF);
   1191 		return 0;
   1192 
   1193 	case WSDISPLAYIO_GETCMAP:
   1194 		if (dp->rd_bpp == 8)
   1195 			return radeonfb_getcmap(dp,
   1196 			    (struct wsdisplay_cmap *)d);
   1197 		return EINVAL;
   1198 
   1199 	case WSDISPLAYIO_PUTCMAP:
   1200 		if (dp->rd_bpp == 8)
   1201 			return radeonfb_putcmap(dp,
   1202 			    (struct wsdisplay_cmap *)d);
   1203 		return EINVAL;
   1204 
   1205 	case WSDISPLAYIO_LINEBYTES:
   1206 		*(unsigned *)d = dp->rd_stride;
   1207 		return 0;
   1208 
   1209 	case WSDISPLAYIO_SMODE:
   1210 		if (*(int *)d != dp->rd_wsmode) {
   1211 			dp->rd_wsmode = *(int *)d;
   1212 			if ((dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) ||
   1213 			    (dp->rd_wsmode == WSDISPLAYIO_MODE_DUMBFB))
   1214 				radeonfb_map(sc);
   1215 
   1216 			if ((dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) &&
   1217 			    (dp->rd_vd.active)) {
   1218 				radeonfb_engine_init(dp);
   1219 				glyphcache_wipe(&dp->rd_gc);
   1220 				radeonfb_init_palette(dp);
   1221 				radeonfb_modeswitch(dp);
   1222 				radeonfb_rectfill(dp, 0, 0, dp->rd_virtx,
   1223 				    dp->rd_virty, dp->rd_bg);
   1224 				vcons_redraw_screen(dp->rd_vd.active);
   1225 			}
   1226 			if (dp->rd_wsmode == WSDISPLAYIO_MODE_MAPPED)
   1227 				radeonfb_unmap(sc);
   1228 		}
   1229 		return 0;
   1230 
   1231 	case WSDISPLAYIO_GCURMAX:
   1232 		((struct wsdisplay_curpos *)d)->x = RADEON_CURSORMAXX;
   1233 		((struct wsdisplay_curpos *)d)->y = RADEON_CURSORMAXY;
   1234 		return 0;
   1235 
   1236 	case WSDISPLAYIO_SCURSOR:
   1237 		return radeonfb_set_cursor(dp, (struct wsdisplay_cursor *)d);
   1238 
   1239 	case WSDISPLAYIO_GCURSOR:
   1240 		return EPASSTHROUGH;
   1241 
   1242 	case WSDISPLAYIO_GCURPOS:
   1243 		((struct wsdisplay_curpos *)d)->x = dp->rd_cursor.rc_pos.x;
   1244 		((struct wsdisplay_curpos *)d)->y = dp->rd_cursor.rc_pos.y;
   1245 		return 0;
   1246 
   1247 	case WSDISPLAYIO_SCURPOS:
   1248 		return radeonfb_set_curpos(dp, (struct wsdisplay_curpos *)d);
   1249 
   1250 	case WSDISPLAYIO_SSPLASH:
   1251 #if defined(SPLASHSCREEN)
   1252 		if (*(int *)d == 1) {
   1253 			SCREEN_DISABLE_DRAWING(&dp->rd_vscreen);
   1254 			splash_render(&dp->rd_splash,
   1255 			    SPLASH_F_CENTER|SPLASH_F_FILL);
   1256 		} else
   1257 			SCREEN_ENABLE_DRAWING(&dp->rd_vscreen);
   1258 		return 0;
   1259 #else
   1260 		return ENODEV;
   1261 #endif
   1262 	case WSDISPLAYIO_GETPARAM:
   1263 		param = (struct wsdisplay_param *)d;
   1264 		switch (param->param) {
   1265 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
   1266 			param->min = 0;
   1267 			param->max = 255;
   1268 			param->curval = dp->rd_bl_level;
   1269 			return 0;
   1270 		case WSDISPLAYIO_PARAM_BACKLIGHT:
   1271 			param->min = 0;
   1272 			param->max = RADEONFB_BACKLIGHT_MAX;
   1273 			param->curval = dp->rd_bl_on;
   1274 			return 0;
   1275 		}
   1276 		return EPASSTHROUGH;
   1277 
   1278 	case WSDISPLAYIO_SETPARAM:
   1279 		param = (struct wsdisplay_param *)d;
   1280 		switch (param->param) {
   1281 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
   1282 			radeonfb_set_backlight(dp, param->curval);
   1283 			return 0;
   1284 		case WSDISPLAYIO_PARAM_BACKLIGHT:
   1285 			radeonfb_switch_backlight(dp,  param->curval);
   1286 			return 0;
   1287 		}
   1288 		return EPASSTHROUGH;
   1289 
   1290 	/* PCI config read/write passthrough. */
   1291 	case PCI_IOC_CFGREAD:
   1292 	case PCI_IOC_CFGWRITE:
   1293 		return pci_devioctl(sc->sc_pc, sc->sc_pt, cmd, d, flag, l);
   1294 
   1295 	case WSDISPLAYIO_GET_BUSID:
   1296 		return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc,
   1297 		    sc->sc_pt, d);
   1298 
   1299 	case WSDISPLAYIO_GET_EDID: {
   1300 		struct wsdisplayio_edid_info *ei = d;
   1301 		return wsdisplayio_get_edid(sc->sc_dev, ei);
   1302 	}
   1303 
   1304 	case WSDISPLAYIO_GET_FBINFO: {
   1305 		struct wsdisplayio_fbinfo *fbi = d;
   1306 		return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi);
   1307 	}
   1308 
   1309 	default:
   1310 		return EPASSTHROUGH;
   1311 	}
   1312 }
   1313 
   1314 paddr_t
   1315 radeonfb_mmap(void *v, void *vs, off_t offset, int prot)
   1316 {
   1317 	struct vcons_data	*vd;
   1318 	struct radeonfb_display	*dp;
   1319 	struct radeonfb_softc	*sc;
   1320 	paddr_t			pa;
   1321 
   1322 	vd = (struct vcons_data *)v;
   1323 	dp = (struct radeonfb_display *)vd->cookie;
   1324 	sc = dp->rd_softc;
   1325 
   1326 	if ((offset >= 0) && (offset < (dp->rd_virty * dp->rd_stride))) {
   1327 		pa = bus_space_mmap(sc->sc_memt,
   1328 		    sc->sc_memaddr + dp->rd_offset + offset, 0,
   1329 		    prot, BUS_SPACE_MAP_LINEAR);
   1330 		return pa;
   1331 	}
   1332 
   1333 	/*
   1334 	 * restrict all other mappings to processes with superuser privileges
   1335 	 * or the kernel itself
   1336 	 */
   1337 	if (kauth_authorize_machdep(kauth_cred_get(), KAUTH_MACHDEP_UNMANAGEDMEM,
   1338 	    NULL, NULL, NULL, NULL) != 0) {
   1339 		aprint_error_dev(sc->sc_dev, "mmap() rejected.\n");
   1340 		return -1;
   1341 	}
   1342 
   1343 	if ((offset >= sc->sc_regaddr) &&
   1344 	    (offset < sc->sc_regaddr + sc->sc_regsz)) {
   1345 		return bus_space_mmap(sc->sc_regt, offset, 0, prot,
   1346 		    BUS_SPACE_MAP_LINEAR);
   1347 	}
   1348 
   1349 	if ((offset >= sc->sc_memaddr) &&
   1350 	    (offset < sc->sc_memaddr + sc->sc_memsz)) {
   1351 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1352 		    BUS_SPACE_MAP_LINEAR);
   1353 	}
   1354 
   1355 	if ((offset >= sc->sc_romaddr) &&
   1356 	    (offset < sc->sc_romaddr + sc->sc_romsz)) {
   1357 		return bus_space_mmap(sc->sc_memt, offset, 0, prot,
   1358 		    BUS_SPACE_MAP_LINEAR);
   1359 	}
   1360 
   1361 #ifdef PCI_MAGIC_IO_RANGE
   1362 	/* allow mapping of IO space */
   1363 	if ((offset >= PCI_MAGIC_IO_RANGE) &&
   1364 	    (offset < PCI_MAGIC_IO_RANGE + 0x10000)) {
   1365 		pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE,
   1366 		    0, prot, 0);
   1367 		return pa;
   1368 	}
   1369 #endif /* PCI_MAGIC_IO_RANGE */
   1370 
   1371 	return -1;
   1372 }
   1373 
   1374 static void
   1375 radeonfb_loadbios(struct radeonfb_softc *sc, const struct pci_attach_args *pa)
   1376 {
   1377 	bus_space_tag_t		romt;
   1378 	bus_space_handle_t	romh, biosh;
   1379 	bus_size_t		romsz;
   1380 	bus_addr_t		ptr;
   1381 	uint32_t		busctl, crtcg, crtc2g = 0, viphctl, seprom, extc;
   1382 	int			bios_voodoo = 0;
   1383 
   1384 	if (pci_mapreg_map(pa, PCI_MAPREG_ROM, PCI_MAPREG_TYPE_ROM,
   1385 		BUS_SPACE_MAP_PREFETCHABLE, &romt, &romh, NULL, &romsz) != 0) {
   1386 		aprint_verbose("%s: unable to map BIOS!\n", XNAME(sc));
   1387 		return;
   1388 	}
   1389 
   1390 	pci_find_rom(pa, romt, romh, romsz, PCI_ROM_CODE_TYPE_X86, &biosh,
   1391 	    &sc->sc_biossz);
   1392 	if (sc->sc_biossz != 0) goto foundit;
   1393 
   1394 	aprint_verbose("trying to read disabled BIOS...\n");
   1395 
   1396 	bios_voodoo = 1;
   1397 	seprom = radeonfb_get32(sc, RADEON_SEPROM_CNTL1);
   1398 	radeonfb_put32(sc, RADEON_SEPROM_CNTL1,
   1399 	    (seprom & ~RADEON_SCK_PRESCALE_MASK) |
   1400 	    (0xc << RADEON_SCK_PRESCALE_SHIFT));
   1401 	viphctl = radeonfb_get32(sc, RADEON_VIPH_CONTROL);
   1402 	radeonfb_put32(sc, RADEON_VIPH_CONTROL, viphctl & ~RADEON_VIPH_EN);
   1403 	busctl = radeonfb_get32(sc, RADEON_BUS_CNTL);
   1404 	radeonfb_put32(sc, RADEON_BUS_CNTL, busctl & ~RADEON_BUS_BIOS_DIS_ROM);
   1405 	crtcg = radeonfb_get32(sc, RADEON_CRTC_GEN_CNTL);
   1406 	radeonfb_put32(sc, RADEON_CRTC_GEN_CNTL, ((crtcg & ~RADEON_CRTC_EN) |
   1407 				      (RADEON_CRTC_DISP_REQ_EN_B |
   1408 				       RADEON_CRTC_EXT_DISP_EN)));
   1409 	if (HAS_CRTC2(sc)) {
   1410 		crtc2g = radeonfb_get32(sc, RADEON_CRTC2_GEN_CNTL);
   1411 		radeonfb_put32(sc, RADEON_CRTC2_GEN_CNTL,
   1412 		    (crtc2g & ~RADEON_CRTC2_EN) |
   1413 		    RADEON_CRTC2_DISP_REQ_EN_B);
   1414 	}
   1415 	extc = radeonfb_get32(sc, RADEON_CRTC_EXT_CNTL);
   1416 	radeonfb_put32(sc, RADEON_CRTC_EXT_CNTL, (extc & ~RADEON_CRTC_CRT_ON) |
   1417 				      (RADEON_CRTC_SYNC_TRISTAT |
   1418 				       RADEON_CRTC_DISPLAY_DIS));
   1419 	pci_find_rom(pa, romt, romh, romsz, PCI_ROM_CODE_TYPE_X86, &biosh,
   1420 	    &sc->sc_biossz);
   1421 
   1422 foundit:
   1423 	if (sc->sc_biossz > 0) {
   1424 		sc->sc_bios = malloc(sc->sc_biossz, M_DEVBUF, M_WAITOK);
   1425 		bus_space_read_region_1(romt, biosh, 0, sc->sc_bios,
   1426 		    sc->sc_biossz);
   1427 	}
   1428 
   1429 	if (bios_voodoo != 0) {
   1430 		radeonfb_put32(sc, RADEON_CRTC_EXT_CNTL, extc);
   1431 		if (HAS_CRTC2(sc)) {
   1432 			radeonfb_put32(sc, RADEON_CRTC2_GEN_CNTL, crtc2g);
   1433 		}
   1434 		radeonfb_put32(sc, RADEON_CRTC_GEN_CNTL, crtcg);
   1435 		radeonfb_put32(sc, RADEON_BUS_CNTL, busctl);
   1436 		radeonfb_put32(sc, RADEON_VIPH_CONTROL, viphctl);
   1437 		radeonfb_put32(sc, RADEON_SEPROM_CNTL1, seprom);
   1438 	}
   1439 
   1440 	/* unmap the PCI expansion rom */
   1441 	bus_space_unmap(romt, romh, romsz);
   1442 
   1443 	/* turn off rom decoder now */
   1444 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM,
   1445 	    pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM) &
   1446 	    ~PCI_MAPREG_ROM_ENABLE);
   1447 
   1448 	if (sc->sc_biossz > 0) {
   1449 		ptr = GETBIOS16(sc, 0x48);
   1450 		if ((GETBIOS32(sc, ptr + 4) == 0x41544f4d /* "ATOM" */) ||
   1451 		    (GETBIOS32(sc, ptr + 4) == 0x4d4f5441 /* "MOTA" */)) {
   1452 			sc->sc_flags |= RFB_ATOM;
   1453 		}
   1454 
   1455 		aprint_verbose("%s: Found %d KB %s BIOS\n", XNAME(sc),
   1456 		    (unsigned)sc->sc_biossz >> 10,
   1457 		    IS_ATOM(sc) ? "ATOM" : "Legacy");
   1458 	}
   1459 }
   1460 
   1461 
   1462 uint32_t
   1463 radeonfb_get32(struct radeonfb_softc *sc, uint32_t reg)
   1464 {
   1465 
   1466 	return bus_space_read_4(sc->sc_regt, sc->sc_regh, reg);
   1467 }
   1468 
   1469 void
   1470 radeonfb_put32(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1471 {
   1472 
   1473 	bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, val);
   1474 }
   1475 
   1476 void
   1477 radeonfb_put32s(struct radeonfb_softc *sc, uint32_t reg, uint32_t val)
   1478 {
   1479 
   1480 	bus_space_write_stream_4(sc->sc_regt, sc->sc_regh, reg, val);
   1481 }
   1482 
   1483 void
   1484 radeonfb_mask32(struct radeonfb_softc *sc, uint32_t reg,
   1485     uint32_t andmask, uint32_t ormask)
   1486 {
   1487 	int		s;
   1488 	uint32_t	val;
   1489 
   1490 	s = splhigh();
   1491 	val = radeonfb_get32(sc, reg);
   1492 	val = (val & andmask) | ormask;
   1493 	radeonfb_put32(sc, reg, val);
   1494 	splx(s);
   1495 }
   1496 
   1497 uint32_t
   1498 radeonfb_getindex(struct radeonfb_softc *sc, uint32_t idx)
   1499 {
   1500 	int		s;
   1501 	uint32_t	val;
   1502 
   1503 	s = splhigh();
   1504 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1505 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1506 	splx(s);
   1507 
   1508 	return (val);
   1509 }
   1510 
   1511 void
   1512 radeonfb_putindex(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1513 {
   1514 	int	s;
   1515 
   1516 	s = splhigh();
   1517 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1518 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1519 	splx(s);
   1520 }
   1521 
   1522 void
   1523 radeonfb_maskindex(struct radeonfb_softc *sc, uint32_t idx,
   1524     uint32_t andmask, uint32_t ormask)
   1525 {
   1526 	int		s;
   1527 	uint32_t	val;
   1528 
   1529 	s = splhigh();
   1530 	radeonfb_put32(sc, RADEON_MM_INDEX, idx);
   1531 	val = radeonfb_get32(sc, RADEON_MM_DATA);
   1532 	val = (val & andmask) | ormask;
   1533 	radeonfb_put32(sc, RADEON_MM_DATA, val);
   1534 	splx(s);
   1535 }
   1536 
   1537 uint32_t
   1538 radeonfb_getpll(struct radeonfb_softc *sc, uint32_t idx)
   1539 {
   1540 	int		s;
   1541 	uint32_t	val;
   1542 
   1543 	s = splhigh();
   1544 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f));
   1545 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1546 	if (HAS_R300CG(sc))
   1547 		radeonfb_r300cg_workaround(sc);
   1548 	splx(s);
   1549 
   1550 	return (val);
   1551 }
   1552 
   1553 void
   1554 radeonfb_putpll(struct radeonfb_softc *sc, uint32_t idx, uint32_t val)
   1555 {
   1556 	int	s;
   1557 
   1558 	s = splhigh();
   1559 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1560 	    RADEON_PLL_WR_EN);
   1561 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1562 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1563 	splx(s);
   1564 }
   1565 
   1566 void
   1567 radeonfb_maskpll(struct radeonfb_softc *sc, uint32_t idx,
   1568     uint32_t andmask, uint32_t ormask)
   1569 {
   1570 	int		s;
   1571 	uint32_t	val;
   1572 
   1573 	s = splhigh();
   1574 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, (idx & 0x3f) |
   1575 		RADEON_PLL_WR_EN);
   1576 	val = radeonfb_get32(sc, RADEON_CLOCK_CNTL_DATA);
   1577 	val = (val & andmask) | ormask;
   1578 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_DATA, val);
   1579 	radeonfb_put32(sc, RADEON_CLOCK_CNTL_INDEX, 0);
   1580 	splx(s);
   1581 }
   1582 
   1583 int
   1584 radeonfb_scratch_test(struct radeonfb_softc *sc, int reg, uint32_t v)
   1585 {
   1586 	uint32_t	saved;
   1587 
   1588 	saved = GET32(sc, reg);
   1589 	PUT32(sc, reg, v);
   1590 	if (GET32(sc, reg) != v) {
   1591 		return -1;
   1592 	}
   1593 	PUT32(sc, reg, saved);
   1594 	return 0;
   1595 }
   1596 
   1597 uintmax_t
   1598 radeonfb_getprop_num(struct radeonfb_softc *sc, const char *name,
   1599     uintmax_t defval)
   1600 {
   1601 	prop_number_t	pn;
   1602 	pn = prop_dictionary_get(device_properties(sc->sc_dev), name);
   1603 	if (pn == NULL) {
   1604 		return defval;
   1605 	}
   1606 	KASSERT(prop_object_type(pn) == PROP_TYPE_NUMBER);
   1607 	return prop_number_unsigned_value(pn);
   1608 }
   1609 
   1610 int
   1611 radeonfb_getclocks(struct radeonfb_softc *sc)
   1612 {
   1613 	bus_addr_t	ptr;
   1614 	int		refclk = 0;
   1615 	int		refdiv = 0;
   1616 	int		minpll = 0;
   1617 	int		maxpll = 0;
   1618 
   1619 	/* load initial property values if port/board provides them */
   1620 	refclk = radeonfb_getprop_num(sc, "refclk", 0) & 0xffff;
   1621 	refdiv = radeonfb_getprop_num(sc, "refdiv", 0) & 0xffff;
   1622 	minpll = radeonfb_getprop_num(sc, "minpll", 0) & 0xffffffffU;
   1623 	maxpll = radeonfb_getprop_num(sc, "maxpll", 0) & 0xffffffffU;
   1624 
   1625 	PRINTPLL(RADEON_PPLL_REF_DIV);
   1626 	PRINTPLL(RADEON_PPLL_DIV_0);
   1627 	PRINTPLL(RADEON_PPLL_DIV_1);
   1628 	PRINTPLL(RADEON_PPLL_DIV_2);
   1629 	PRINTPLL(RADEON_PPLL_DIV_3);
   1630 	PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   1631 	PRINTPLL(RADEON_P2PLL_REF_DIV);
   1632 	PRINTPLL(RADEON_P2PLL_DIV_0);
   1633 
   1634 	if (refclk && refdiv && minpll && maxpll)
   1635 		goto dontprobe;
   1636 
   1637 	if (!sc->sc_biossz) {
   1638 		/* no BIOS */
   1639 		aprint_verbose("%s: No video BIOS, using default clocks\n",
   1640 		    XNAME(sc));
   1641 		if (IS_IGP(sc))
   1642 			refclk = refclk ? refclk : 1432;
   1643 		else
   1644 			refclk = refclk ? refclk : 2700;
   1645 		refdiv = refdiv ? refdiv : 12;
   1646 		minpll = minpll ? minpll : 12500;
   1647 		/* XXX
   1648 		 * Need to check if the firmware or something programmed a
   1649 		 * higher value than this, and if so, bump it.
   1650 		 * The RV280 in my iBook is unhappy if the PLL input is less
   1651 		 * than 360MHz
   1652 		 */
   1653 		maxpll = maxpll ? maxpll : 40000/*35000*/;
   1654 	} else if (IS_ATOM(sc)) {
   1655 		/* ATOM BIOS */
   1656 		ptr = GETBIOS16(sc, 0x48);
   1657 		ptr = GETBIOS16(sc, ptr + 32);	/* aka MasterDataStart */
   1658 		ptr = GETBIOS16(sc, ptr + 12);	/* pll info block */
   1659 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 82);
   1660 		minpll = minpll ? minpll : GETBIOS16(sc, ptr + 78);
   1661 		maxpll = maxpll ? maxpll : GETBIOS16(sc, ptr + 32);
   1662 		/*
   1663 		 * ATOM BIOS doesn't supply a reference divider, so we
   1664 		 * have to probe for it.
   1665 		 */
   1666 		if (refdiv < 2)
   1667 			refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV) &
   1668 			    RADEON_PPLL_REF_DIV_MASK;
   1669 		/*
   1670 		 * if probe is zero, just assume one that should work
   1671 		 * for most parts
   1672 		 */
   1673 		if (refdiv < 2)
   1674 			refdiv = 12;
   1675 
   1676 	} else {
   1677 		uint32_t tmp = GETPLL(sc, RADEON_PPLL_REF_DIV);
   1678 		/* Legacy BIOS */
   1679 		ptr = GETBIOS16(sc, 0x48);
   1680 		ptr = GETBIOS16(sc, ptr + 0x30);
   1681 		if (IS_R300(sc)) {
   1682 			refdiv = refdiv ? refdiv :
   1683 			    (tmp & R300_PPLL_REF_DIV_ACC_MASK) >>
   1684 			    R300_PPLL_REF_DIV_ACC_SHIFT;
   1685 		} else {
   1686 			refdiv = refdiv ? refdiv :
   1687 			    tmp & RADEON_PPLL_REF_DIV_MASK;
   1688 		}
   1689 		refclk = refclk ? refclk : GETBIOS16(sc, ptr + 0x0E);
   1690 		refdiv = refdiv ? refdiv : GETBIOS16(sc, ptr + 0x10);
   1691 		minpll = minpll ? minpll : GETBIOS32(sc, ptr + 0x12);
   1692 		maxpll = maxpll ? maxpll : GETBIOS32(sc, ptr + 0x16);
   1693 	}
   1694 
   1695 
   1696 dontprobe:
   1697 	sc->sc_refclk = refclk * 10;
   1698 	sc->sc_refdiv = refdiv;
   1699 	sc->sc_minpll = minpll * 10;
   1700 	sc->sc_maxpll = maxpll * 10;
   1701 	return 0;
   1702 }
   1703 
   1704 int
   1705 radeonfb_calc_dividers(struct radeonfb_softc *sc, uint32_t dotclock,
   1706     uint32_t *postdivbit, uint32_t *feedbackdiv, int flags)
   1707 {
   1708 	int		i;
   1709 	uint32_t	outfreq;
   1710 	int		div;
   1711 
   1712 	DPRINTF(("dot clock: %u\n", dotclock));
   1713 	for (i = 0; (div = radeonfb_dividers[i].divider) != 0; i++) {
   1714 
   1715 		if ((flags & NO_ODD_FBDIV) && ((div & 1) != 0))
   1716 			continue;
   1717 
   1718 		/*
   1719 		 * XXX
   1720 		 * the rv350 in my last generation 14" iBook G4 produces
   1721 		 * garbage with dividers > 4. No idea if this is a hardware
   1722 		 * limitation or an error in the divider table.
   1723 		 */
   1724 		if ((sc->sc_family == RADEON_RV350) && (div > 4))
   1725 			continue;
   1726 
   1727 		outfreq = div * dotclock;
   1728 		if ((outfreq >= sc->sc_minpll) &&
   1729 		    (outfreq <= sc->sc_maxpll)) {
   1730 			DPRINTF(("outfreq: %u\n", outfreq));
   1731 			*postdivbit =
   1732 			    ((uint32_t)radeonfb_dividers[i].mask << 16);
   1733 			DPRINTF(("post divider: %d (mask %x)\n", div,
   1734 				    *postdivbit));
   1735 			break;
   1736 		}
   1737 	}
   1738 
   1739 	if (div == 0)
   1740 		return 1;
   1741 
   1742 	*feedbackdiv = DIVIDE(sc->sc_refdiv * outfreq, sc->sc_refclk);
   1743 	DPRINTF(("feedback divider: %d\n", *feedbackdiv));
   1744 	return 0;
   1745 }
   1746 
   1747 #if 0
   1748 #ifdef RADEONFB_DEBUG
   1749 static void
   1750 dump_buffer(const char *pfx, void *buffer, unsigned int size)
   1751 {
   1752 	char		asc[17];
   1753 	unsigned	ptr = (unsigned)buffer;
   1754 	char		*start = (char *)(ptr & ~0xf);
   1755 	char		*end = (char *)(ptr + size);
   1756 
   1757 	end = (char *)(((unsigned)end + 0xf) & ~0xf);
   1758 
   1759 	if (pfx == NULL) {
   1760 		pfx = "";
   1761 	}
   1762 
   1763 	while (start < end) {
   1764 		unsigned offset = (unsigned)start & 0xf;
   1765 		if (offset == 0) {
   1766 			printf("%s%x: ", pfx, (unsigned)start);
   1767 		}
   1768 		if (((unsigned)start < ptr) ||
   1769 		    ((unsigned)start >= (ptr + size))) {
   1770 			printf("  ");
   1771 			asc[offset] = ' ';
   1772 		} else {
   1773 			printf("%02x", *(unsigned char *)start);
   1774 			if ((*start >= ' ') && (*start <= '~')) {
   1775 				asc[offset] = *start;
   1776 			} else {
   1777 				asc[offset] = '.';
   1778 			}
   1779 		}
   1780 		asc[offset + 1] = 0;
   1781 		if (offset % 2) {
   1782 			printf(" ");
   1783 		}
   1784 		if (offset == 15) {
   1785 			printf(" %s\n", asc);
   1786 		}
   1787 		start++;
   1788 	}
   1789 }
   1790 #endif
   1791 #endif
   1792 
   1793 int
   1794 radeonfb_getconnectors(struct radeonfb_softc *sc)
   1795 {
   1796 	int	i;
   1797 	int	found = 0;
   1798 
   1799 	for (i = 0; i < 2; i++) {
   1800 		sc->sc_ports[i].rp_mon_type = RADEON_MT_UNKNOWN;
   1801 		sc->sc_ports[i].rp_ddc_type = RADEON_DDC_NONE;
   1802 		sc->sc_ports[i].rp_dac_type = RADEON_DAC_UNKNOWN;
   1803 		sc->sc_ports[i].rp_conn_type = RADEON_CONN_NONE;
   1804 		sc->sc_ports[i].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1805 	}
   1806 
   1807 	/*
   1808 	 * This logic is borrowed from Xorg's radeon driver.
   1809 	 */
   1810 	if (!sc->sc_biossz)
   1811 		goto nobios;
   1812 
   1813 	if (IS_ATOM(sc)) {
   1814 		/* not done yet */
   1815 	} else {
   1816 		uint16_t	ptr;
   1817 		int		port = 0;
   1818 
   1819 		ptr = GETBIOS16(sc, 0x48);
   1820 		ptr = GETBIOS16(sc, ptr + 0x50);
   1821 		for (i = 1; i < 4; i++) {
   1822 			uint16_t	entry;
   1823 			uint8_t		conn, ddc, dac, tmds;
   1824 
   1825 			/*
   1826 			 * Parse the connector table.  From reading the code,
   1827 			 * it appears to made up of 16-bit entries for each
   1828 			 * connector.  The 16-bits are defined as:
   1829 			 *
   1830 			 * bits 12-15	- connector type (0 == end of table)
   1831 			 * bits 8-11	- DDC type
   1832 			 * bits 5-7	- ???
   1833 			 * bit 4	- TMDS type (1 = EXT, 0 = INT)
   1834 			 * bits 1-3	- ???
   1835 			 * bit 0	- DAC, 1 = TVDAC, 0 = primary
   1836 			 */
   1837 			if (!GETBIOS8(sc, ptr + i * 2) && i > 1)
   1838 				break;
   1839 			entry = GETBIOS16(sc, ptr + i * 2);
   1840 
   1841 			conn = (entry >> 12) & 0xf;
   1842 			ddc = (entry >> 8) & 0xf;
   1843 			dac = (entry & 0x1) ? RADEON_DAC_TVDAC :
   1844 			    RADEON_DAC_PRIMARY;
   1845 			tmds = ((entry >> 4) & 0x1) ? RADEON_TMDS_EXT :
   1846 			    RADEON_TMDS_INT;
   1847 
   1848 			if (conn == RADEON_CONN_NONE)
   1849 				continue;	/* no connector */
   1850 
   1851 			/*
   1852 			 * XXX
   1853 			 * both Mac Mini variants have both outputs wired to
   1854 			 * the same connector and share the DDC lines
   1855 			 */
   1856 			if ((found > 0) &&
   1857 			    (sc->sc_ports[port].rp_ddc_type == ddc)) {
   1858 				/* duplicate entry for same connector */
   1859 				continue;
   1860 			}
   1861 
   1862 			/* internal DDC_DVI port gets priority */
   1863 			if ((ddc == RADEON_DDC_DVI) || (port == 1))
   1864 				port = 0;
   1865 			else
   1866 				port = 1;
   1867 
   1868 			sc->sc_ports[port].rp_ddc_type =
   1869 			    ddc > RADEON_DDC_CRT2 ? RADEON_DDC_NONE : ddc;
   1870 			sc->sc_ports[port].rp_dac_type = dac;
   1871 			sc->sc_ports[port].rp_conn_type =
   1872 			    uimin(conn, RADEON_CONN_UNSUPPORTED) ;
   1873 
   1874 			sc->sc_ports[port].rp_tmds_type = tmds;
   1875 
   1876 			if ((conn != RADEON_CONN_DVI_I) &&
   1877 			    (conn != RADEON_CONN_DVI_D) &&
   1878 			    (tmds == RADEON_TMDS_INT))
   1879 				sc->sc_ports[port].rp_tmds_type =
   1880 				    RADEON_TMDS_UNKNOWN;
   1881 			sc->sc_ports[port].rp_number = i - 1;
   1882 
   1883 			found += (port + 1);
   1884 		}
   1885 	}
   1886 
   1887 nobios:
   1888 	if (!found) {
   1889 		bool dvi_ext = FALSE, dvi_int = FALSE;
   1890 		DPRINTF(("No connector info in BIOS!\n"));
   1891 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
   1892 		    "dvi-internal", &dvi_int);
   1893 		prop_dictionary_get_bool(device_properties(sc->sc_dev),
   1894 		    "dvi-external", &dvi_ext);
   1895 		if (dvi_ext) {
   1896 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1897 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_CRT2;
   1898 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1899 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_I;
   1900 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_EXT;	/* output to fp2 */
   1901 			sc->sc_ports[0].rp_number = 0;
   1902 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1903 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_NONE;
   1904 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_UNKNOWN;
   1905 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_NONE;
   1906 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1907 			sc->sc_ports[1].rp_number = 1;
   1908 		} else	if (dvi_int) {
   1909 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1910 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_CRT2;
   1911 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1912 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_I;
   1913 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1914 			sc->sc_ports[0].rp_number = 0;
   1915 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1916 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_NONE;
   1917 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_UNKNOWN;
   1918 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_NONE;
   1919 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1920 			sc->sc_ports[1].rp_number = 1;
   1921 		} else if IS_MOBILITY(sc) {
   1922 			/* default, port 0 = internal TMDS, port 1 = CRT */
   1923 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1924 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1925 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1926 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1927 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1928 			sc->sc_ports[0].rp_number = 0;
   1929 
   1930 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1931 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1932 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1933 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1934 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_EXT;
   1935 			sc->sc_ports[1].rp_number = 1;
   1936 		} else {
   1937 			/* default, port 0 = DVI, port 1 = CRT */
   1938 			sc->sc_ports[0].rp_mon_type = RADEON_MT_UNKNOWN;
   1939 			sc->sc_ports[0].rp_ddc_type = RADEON_DDC_DVI;
   1940 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1941 			sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
   1942 			sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
   1943 			sc->sc_ports[0].rp_number = 0;
   1944 
   1945 			sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
   1946 			sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
   1947 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1948 			sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
   1949 			sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_UNKNOWN;
   1950 			sc->sc_ports[1].rp_number = 1;
   1951 		}
   1952 	}
   1953 
   1954 	/*
   1955 	 * Fixup for RS300/RS350/RS400 chips, that lack a primary DAC.
   1956 	 * these chips should use TVDAC for the VGA port.
   1957 	 */
   1958 	if (HAS_SDAC(sc)) {
   1959 		if (sc->sc_ports[0].rp_conn_type == RADEON_CONN_CRT) {
   1960 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
   1961 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
   1962 		} else {
   1963 			sc->sc_ports[1].rp_dac_type = RADEON_DAC_TVDAC;
   1964 			sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1965 		}
   1966 	} else if (!HAS_CRTC2(sc)) {
   1967 		sc->sc_ports[0].rp_dac_type = RADEON_DAC_PRIMARY;
   1968 	}
   1969 
   1970 	for (i = 0; i < 2; i++) {
   1971 		char	edid[128];
   1972 		uint8_t	ddc;
   1973 		struct edid_info *eip = &sc->sc_ports[i].rp_edid;
   1974 		prop_data_t edid_data;
   1975 
   1976 		DPRINTF(("Port #%d:\n", i));
   1977 		DPRINTF(("   conn = %d\n", sc->sc_ports[i].rp_conn_type));
   1978 		DPRINTF(("    ddc = %d\n", sc->sc_ports[i].rp_ddc_type));
   1979 		DPRINTF(("    dac = %d\n", sc->sc_ports[i].rp_dac_type));
   1980 		DPRINTF(("   tmds = %d\n", sc->sc_ports[i].rp_tmds_type));
   1981 		DPRINTF(("   crtc = %d\n", sc->sc_ports[i].rp_number));
   1982 
   1983 		sc->sc_ports[i].rp_edid_valid = 0;
   1984 		/* first look for static EDID data */
   1985 		if ((edid_data = prop_dictionary_get(device_properties(
   1986 		      sc->sc_dev), "EDID")) != NULL) {
   1987 
   1988 			aprint_debug_dev(sc->sc_dev, "using static EDID\n");
   1989 			memcpy(edid, prop_data_value(edid_data), 128);
   1990 			if (edid_parse(edid, eip) == 0) {
   1991 
   1992 				sc->sc_ports[i].rp_edid_valid = 1;
   1993 #ifdef RADEONFB_DEBUG
   1994 					edid_print(eip);
   1995 #endif
   1996 			}
   1997 		}
   1998 		/* if we didn't find any we'll try to talk to the monitor */
   1999 		if (sc->sc_ports[i].rp_edid_valid != 1) {
   2000 
   2001 			ddc = sc->sc_ports[i].rp_ddc_type;
   2002 			if (ddc != RADEON_DDC_NONE) {
   2003 				if ((radeonfb_i2c_read_edid(sc, ddc, edid)
   2004 				    == 0) && (edid_parse(edid, eip) == 0)) {
   2005 
   2006 					sc->sc_ports[i].rp_edid_valid = 1;
   2007 #ifdef RADEONFB_DEBUG
   2008 					edid_print(eip);
   2009 #endif
   2010 				}
   2011 			}
   2012 		}
   2013 	}
   2014 
   2015 	return found;
   2016 }
   2017 
   2018 int
   2019 radeonfb_gettmds(struct radeonfb_softc *sc)
   2020 {
   2021 	int	i;
   2022 
   2023 	if (!sc->sc_biossz) {
   2024 		goto nobios;
   2025 	}
   2026 
   2027 	if (IS_ATOM(sc)) {
   2028 		/* XXX: not done yet */
   2029 	} else {
   2030 		uint16_t	ptr;
   2031 		int		n;
   2032 
   2033 		ptr = GETBIOS16(sc, 0x48);
   2034 		ptr = GETBIOS16(sc, ptr + 0x34);
   2035 		DPRINTF(("DFP table revision %d\n", GETBIOS8(sc, ptr)));
   2036 		if (GETBIOS8(sc, ptr) == 3) {
   2037 			/* revision three table */
   2038 			n = GETBIOS8(sc, ptr + 5) + 1;
   2039 			n = uimin(n, 4);
   2040 
   2041 			memset(sc->sc_tmds_pll, 0, sizeof (sc->sc_tmds_pll));
   2042 			for (i = 0; i < n; i++) {
   2043 				sc->sc_tmds_pll[i].rtp_pll = GETBIOS32(sc,
   2044 				    ptr + i * 10 + 8);
   2045 				sc->sc_tmds_pll[i].rtp_freq = GETBIOS16(sc,
   2046 				    ptr + i * 10 + 0x10);
   2047 				DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   2048 					    sc->sc_tmds_pll[i].rtp_freq,
   2049 					    sc->sc_tmds_pll[i].rtp_pll));
   2050 			}
   2051 			return 0;
   2052 		}
   2053 	}
   2054 
   2055 nobios:
   2056 	DPRINTF(("no suitable DFP table present\n"));
   2057 	for (i = 0;
   2058 	     i < sizeof (radeonfb_tmds_pll) / sizeof (radeonfb_tmds_pll[0]);
   2059 	     i++) {
   2060 		int	j;
   2061 
   2062 		if (radeonfb_tmds_pll[i].family != sc->sc_family)
   2063 			continue;
   2064 
   2065 		for (j = 0; j < 4; j++) {
   2066 			sc->sc_tmds_pll[j] = radeonfb_tmds_pll[i].plls[j];
   2067 			DPRINTF(("TMDS_PLL dot clock %d pll %x\n",
   2068 				    sc->sc_tmds_pll[j].rtp_freq,
   2069 				    sc->sc_tmds_pll[j].rtp_pll));
   2070 		}
   2071 		return 0;
   2072 	}
   2073 
   2074 	return -1;
   2075 }
   2076 
   2077 const struct videomode *
   2078 radeonfb_modelookup(const char *name)
   2079 {
   2080 	int	i;
   2081 
   2082 	for (i = 0; i < videomode_count; i++) {
   2083 		if (!strcmp(name, videomode_list[i].name))
   2084 			return &videomode_list[i];
   2085 	}
   2086 	return NULL;
   2087 }
   2088 
   2089 void
   2090 radeonfb_pllwriteupdate(struct radeonfb_softc *sc, int crtc)
   2091 {
   2092 	if (crtc) {
   2093 		while (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   2094 		    RADEON_P2PLL_ATOMIC_UPDATE_R);
   2095 		SETPLL(sc, RADEON_P2PLL_REF_DIV, RADEON_P2PLL_ATOMIC_UPDATE_W);
   2096 	} else {
   2097 		while (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   2098 		    RADEON_PPLL_ATOMIC_UPDATE_R);
   2099 		SETPLL(sc, RADEON_PPLL_REF_DIV, RADEON_PPLL_ATOMIC_UPDATE_W);
   2100 	}
   2101 }
   2102 
   2103 void
   2104 radeonfb_pllwaitatomicread(struct radeonfb_softc *sc, int crtc)
   2105 {
   2106 	int	i;
   2107 
   2108 	for (i = 10000; i; i--) {
   2109 		if (crtc) {
   2110 			if (GETPLL(sc, RADEON_P2PLL_REF_DIV) &
   2111 			    RADEON_P2PLL_ATOMIC_UPDATE_R)
   2112 				break;
   2113 		} else {
   2114 			if (GETPLL(sc, RADEON_PPLL_REF_DIV) &
   2115 			    RADEON_PPLL_ATOMIC_UPDATE_R)
   2116 				break;
   2117 		}
   2118 	}
   2119 }
   2120 
   2121 void
   2122 radeonfb_program_vclk(struct radeonfb_softc *sc, int dotclock, int crtc, int flags)
   2123 {
   2124 	uint32_t	pbit = 0;
   2125 	uint32_t	feed = 0;
   2126 	uint32_t	data, refdiv, div0, r2xxref;
   2127 
   2128 	radeonfb_calc_dividers(sc, dotclock, &pbit, &feed, flags);
   2129 
   2130 	if (crtc == 0) {
   2131 
   2132 		refdiv = GETPLL(sc, RADEON_PPLL_REF_DIV);
   2133 
   2134 		/*
   2135 		 * XXX
   2136 		 * the RV350 in my last generation iBook G4 behaves like an
   2137 		 * r2xx here - try to detect that and not screw up the reference
   2138 		 * divider.
   2139 		 * xf86-video-radeon just skips PLL programming altogether
   2140 		 * on iBooks, probably for this reason.
   2141 		 */
   2142 		r2xxref = (refdiv & ~RADEON_PPLL_REF_DIV_MASK) | sc->sc_refdiv;
   2143 		if (IS_R300(sc) && (r2xxref != refdiv)) {
   2144 			refdiv = (refdiv & ~R300_PPLL_REF_DIV_ACC_MASK) |
   2145 			    (sc->sc_refdiv << R300_PPLL_REF_DIV_ACC_SHIFT);
   2146 		} else {
   2147 			refdiv = (refdiv & ~RADEON_PPLL_REF_DIV_MASK) |
   2148 			    sc->sc_refdiv;
   2149 		}
   2150 		DPRINTF(("refdiv %08x\n", refdiv));
   2151 		div0 = GETPLL(sc, RADEON_PPLL_DIV_0);
   2152 		DPRINTF(("div0 %08x\n", div0));
   2153 		div0 &= ~(RADEON_PPLL_FB3_DIV_MASK |
   2154 		    RADEON_PPLL_POST3_DIV_MASK);
   2155 		div0 |= pbit;
   2156 		div0 |= (feed & RADEON_PPLL_FB3_DIV_MASK);
   2157 		DPRINTF(("div0 %08x\n", div0));
   2158 
   2159 		if ((refdiv == GETPLL(sc, RADEON_PPLL_REF_DIV)) &&
   2160 		    (div0 == GETPLL(sc, RADEON_PPLL_DIV_0))) {
   2161 			/*
   2162 			 * nothing to do here, the PLL is already where we
   2163 			 * want it
   2164 			 */
   2165 			PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   2166 			    ~RADEON_PLL_DIV_SEL);
   2167 			aprint_debug_dev(sc->sc_dev, "no need to touch the PLL\n");
   2168 			return;
   2169 		}
   2170 
   2171 		/* alright, we do need to reprogram stuff */
   2172 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   2173 		    RADEON_VCLK_SRC_SEL_CPUCLK,
   2174 		    ~RADEON_VCLK_SRC_SEL_MASK);
   2175 
   2176 		/* put vclk into reset, use atomic updates */
   2177 		SETPLL(sc, RADEON_PPLL_CNTL,
   2178 		    RADEON_PPLL_REFCLK_SEL |
   2179 		    RADEON_PPLL_FBCLK_SEL |
   2180 		    RADEON_PPLL_RESET |
   2181 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   2182 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   2183 
   2184 		/* select clock 0 */
   2185 		PATCH32(sc, RADEON_CLOCK_CNTL_INDEX, 0,
   2186 		    ~RADEON_PLL_DIV_SEL);
   2187 
   2188 		PUTPLL(sc, RADEON_PPLL_REF_DIV, refdiv);
   2189 
   2190 		/* xf86-video-radeon does this, not sure why */
   2191 		PUTPLL(sc, RADEON_PPLL_DIV_0, div0);
   2192 		PUTPLL(sc, RADEON_PPLL_DIV_0, div0);
   2193 
   2194 		/* use the atomic update */
   2195 		radeonfb_pllwriteupdate(sc, crtc);
   2196 
   2197 		/* and wait for it to complete */
   2198 		radeonfb_pllwaitatomicread(sc, crtc);
   2199 
   2200 		/* program HTOTAL (why?) */
   2201 		PUTPLL(sc, RADEON_HTOTAL_CNTL, 0);
   2202 
   2203 		/* drop reset */
   2204 		CLRPLL(sc, RADEON_PPLL_CNTL,
   2205 		    RADEON_PPLL_RESET | RADEON_PPLL_SLEEP |
   2206 		    RADEON_PPLL_ATOMIC_UPDATE_EN |
   2207 		    RADEON_PPLL_VGA_ATOMIC_UPDATE_EN);
   2208 
   2209 		PRINTPLL(RADEON_PPLL_CNTL);
   2210 		PRINTPLL(RADEON_PPLL_REF_DIV);
   2211 		PRINTPLL(RADEON_PPLL_DIV_3);
   2212 
   2213 		/* give clock time to lock */
   2214 		delay(50000);
   2215 
   2216 		PATCHPLL(sc, RADEON_VCLK_ECP_CNTL,
   2217 		    RADEON_VCLK_SRC_SEL_PPLLCLK,
   2218 		    ~RADEON_VCLK_SRC_SEL_MASK);
   2219 
   2220 	} else {
   2221 
   2222 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   2223 		    RADEON_PIX2CLK_SRC_SEL_CPUCLK,
   2224 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   2225 
   2226 		/* put vclk into reset, use atomic updates */
   2227 		SETPLL(sc, RADEON_P2PLL_CNTL,
   2228 		    RADEON_P2PLL_RESET |
   2229 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   2230 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   2231 
   2232 		/* program reference divider */
   2233 		PATCHPLL(sc, RADEON_P2PLL_REF_DIV, sc->sc_refdiv,
   2234 		    ~RADEON_P2PLL_REF_DIV_MASK);
   2235 
   2236 		/* program feedback and post dividers */
   2237 		data = GETPLL(sc, RADEON_P2PLL_DIV_0);
   2238 		data &= ~(RADEON_P2PLL_FB0_DIV_MASK |
   2239 		    RADEON_P2PLL_POST0_DIV_MASK);
   2240 		data |= pbit;
   2241 		data |= (feed & RADEON_P2PLL_FB0_DIV_MASK);
   2242 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   2243 		PUTPLL(sc, RADEON_P2PLL_DIV_0, data);
   2244 
   2245 		PRINTPLL(RADEON_P2PLL_REF_DIV);
   2246 		PRINTPLL(RADEON_P2PLL_DIV_0);
   2247 
   2248 		/* use the atomic update */
   2249 		radeonfb_pllwriteupdate(sc, crtc);
   2250 
   2251 		/* and wait for it to complete */
   2252 		radeonfb_pllwaitatomicread(sc, crtc);
   2253 
   2254 		/* program HTOTAL (why?) */
   2255 		PUTPLL(sc, RADEON_HTOTAL2_CNTL, 0);
   2256 
   2257 		/* drop reset */
   2258 		CLRPLL(sc, RADEON_P2PLL_CNTL,
   2259 		    RADEON_P2PLL_RESET | RADEON_P2PLL_SLEEP |
   2260 		    RADEON_P2PLL_ATOMIC_UPDATE_EN |
   2261 		    RADEON_P2PLL_VGA_ATOMIC_UPDATE_EN);
   2262 
   2263 		/* allow time for clock to lock */
   2264 		delay(50000);
   2265 
   2266 		PATCHPLL(sc, RADEON_PIXCLKS_CNTL,
   2267 		    RADEON_PIX2CLK_SRC_SEL_P2PLLCLK,
   2268 		    ~RADEON_PIX2CLK_SRC_SEL_MASK);
   2269 	}
   2270 	PRINTREG(RADEON_CRTC_MORE_CNTL);
   2271 }
   2272 
   2273 void
   2274 radeonfb_modeswitch(struct radeonfb_display *dp)
   2275 {
   2276 	struct radeonfb_softc	*sc = dp->rd_softc;
   2277 	int			i;
   2278 
   2279 	if (IS_AVIVO(sc)) {
   2280 		/*
   2281 		 * no actual mode setting yet, we just make sure the CRTCs
   2282 		 * point at the right memory ranges and use the same pitch
   2283 		 * for the drawing engine
   2284 		 */
   2285 		if (GET32(sc, AVIVO_D1CRTC_CONTROL) & AVIVO_CRTC_EN) {
   2286 			CLR32(sc, AVIVO_D1GRPH_CONTROL, AVIVO_D1GRPH_MACRO_ADDRESS_MODE);
   2287 			dp->rd_stride = GET32(sc, AVIVO_D1GRPH_PITCH);
   2288 			PUT32(sc, AVIVO_D1GRPH_PRIMARY_SURFACE_ADDRESS, 0);
   2289 		}
   2290 		if (GET32(sc, AVIVO_D2CRTC_CONTROL) & AVIVO_CRTC_EN) {
   2291 			CLR32(sc, AVIVO_D2GRPH_CONTROL, AVIVO_D1GRPH_MACRO_ADDRESS_MODE);
   2292 			dp->rd_stride = GET32(sc, AVIVO_D2GRPH_PITCH);
   2293 			PUT32(sc, AVIVO_D2GRPH_PRIMARY_SURFACE_ADDRESS, 0);
   2294 		}
   2295 		return;
   2296 	}
   2297 
   2298 	/* blank the display while we switch modes */
   2299 	//radeonfb_blank(dp, 1);
   2300 
   2301 #if 0
   2302 	SET32(sc, RADEON_CRTC_EXT_CNTL,
   2303 	    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2304 	    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2305 #endif
   2306 
   2307 	/* these registers might get in the way... */
   2308 	PUT32(sc, RADEON_OVR_CLR, 0);
   2309 	PUT32(sc, RADEON_OVR_WID_LEFT_RIGHT, 0);
   2310 	PUT32(sc, RADEON_OVR_WID_TOP_BOTTOM, 0);
   2311 	PUT32(sc, RADEON_OV0_SCALE_CNTL, 0);
   2312 	PUT32(sc, RADEON_SUBPIC_CNTL, 0);
   2313 	PUT32(sc, RADEON_VIPH_CONTROL, 0);
   2314 	PUT32(sc, RADEON_I2C_CNTL_1, 0);
   2315 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2316 	PUT32(sc, RADEON_CAP0_TRIG_CNTL, 0);
   2317 	PUT32(sc, RADEON_CAP1_TRIG_CNTL, 0);
   2318 
   2319 	for (i = 0; i < dp->rd_ncrtcs; i++)
   2320 		radeonfb_setcrtc(dp, i);
   2321 
   2322 #if 0
   2323 	/*
   2324 	 * DVO chip voodoo from xf86-video-radeon
   2325 	 * apparently this is needed for some powerbooks with DVI outputs
   2326 	 */
   2327 
   2328 	uint8_t data[5][2] = {{0x8, 0x030}, {0x9, 0}, {0xa, 0x90}, {0xc, 0x89}, {0x8, 0x3b}};
   2329 	int n = 0;
   2330 	iic_acquire_bus(&sc->sc_i2c[0].ric_controller, 0);
   2331 	for (i = 0; i < 5; i++)
   2332 		n += iic_exec(&sc->sc_i2c[0].ric_controller, I2C_OP_WRITE, 0x38, data[i], 2, NULL, 0, 0);
   2333 	iic_release_bus(&sc->sc_i2c[0].ric_controller, 0);
   2334 	printf("n = %d\n", n);
   2335 #endif
   2336 
   2337 	/* activate the display */
   2338 	radeonfb_blank(dp, 0);
   2339 }
   2340 
   2341 void
   2342 radeonfb_setcrtc(struct radeonfb_display *dp, int index)
   2343 {
   2344 	int			crtc, flags = 0;
   2345 	struct videomode	*mode;
   2346 	struct radeonfb_softc	*sc;
   2347 	struct radeonfb_crtc	*cp;
   2348 	uint32_t		v, hd, vd;
   2349 	uint32_t		gencntl;
   2350 	uint32_t		htotaldisp;
   2351 	uint32_t		hsyncstrt;
   2352 	uint32_t		vtotaldisp;
   2353 	uint32_t		vsyncstrt;
   2354 	uint32_t		fphsyncstrt;
   2355 	uint32_t		fpvsyncstrt;
   2356 	uint32_t		fphtotaldisp;
   2357 	uint32_t		fpvtotaldisp;
   2358 	uint32_t		pitch;
   2359 
   2360 	sc = dp->rd_softc;
   2361 
   2362 	if ((sc->sc_ports[index].rp_tmds_type == RADEON_TMDS_INT) ||
   2363 	    (sc->sc_ports[index].rp_tmds_type == RADEON_TMDS_EXT)) {
   2364 		flags |= NO_ODD_FBDIV;
   2365 	}
   2366 
   2367 	cp = &dp->rd_crtcs[index];
   2368 	crtc = cp->rc_number;
   2369 	mode = &cp->rc_videomode;
   2370 
   2371 #if 1
   2372 	pitch = dp->rd_stride / dp->rd_bpp;
   2373 #else
   2374 	pitch = (((sc->sc_maxx * sc->sc_maxbpp) + ((sc->sc_maxbpp * 8) - 1)) /
   2375 	    (sc->sc_maxbpp * 8));
   2376 #endif
   2377 	switch (crtc) {
   2378 	case 0:
   2379 		gencntl = RADEON_CRTC_GEN_CNTL;
   2380 		htotaldisp = RADEON_CRTC_H_TOTAL_DISP;
   2381 		hsyncstrt = RADEON_CRTC_H_SYNC_STRT_WID;
   2382 		vtotaldisp = RADEON_CRTC_V_TOTAL_DISP;
   2383 		vsyncstrt = RADEON_CRTC_V_SYNC_STRT_WID;
   2384 		/* should probably leave those alone on non-LVDS */
   2385 		fpvsyncstrt = RADEON_FP_V_SYNC_STRT_WID;
   2386 		fphsyncstrt = RADEON_FP_H_SYNC_STRT_WID;
   2387 		fpvtotaldisp = RADEON_FP_CRTC_V_TOTAL_DISP;
   2388 		fphtotaldisp = RADEON_FP_CRTC_H_TOTAL_DISP;
   2389 		break;
   2390 	case 1:
   2391 		gencntl = RADEON_CRTC2_GEN_CNTL;
   2392 		htotaldisp = RADEON_CRTC2_H_TOTAL_DISP;
   2393 		hsyncstrt = RADEON_CRTC2_H_SYNC_STRT_WID;
   2394 		vtotaldisp = RADEON_CRTC2_V_TOTAL_DISP;
   2395 		vsyncstrt = RADEON_CRTC2_V_SYNC_STRT_WID;
   2396 		fpvsyncstrt = RADEON_FP_V2_SYNC_STRT_WID;
   2397 		fphsyncstrt = RADEON_FP_H2_SYNC_STRT_WID;
   2398 		/* XXX these registers don't seem to exist */
   2399 		fpvtotaldisp = 0;//RADEON_FP_CRTC2_V_TOTAL_DISP;
   2400 		fphtotaldisp = 0;//RADEON_FP_CRTC2_H_TOTAL_DISP;
   2401 		break;
   2402 	default:
   2403 		panic("Bad CRTC!");
   2404 		break;
   2405 	}
   2406 
   2407 	/*
   2408 	 * CRTC_GEN_CNTL - depth, accelerator mode, etc.
   2409 	 */
   2410 	/* only bother with 32bpp and 8bpp */
   2411 	v = dp->rd_format << RADEON_CRTC_PIX_WIDTH_SHIFT;
   2412 
   2413 	if (crtc == 1) {
   2414 		v |= RADEON_CRTC2_CRT2_ON | RADEON_CRTC2_EN;
   2415 	} else {
   2416 		v |= RADEON_CRTC_EXT_DISP_EN | RADEON_CRTC_EN;
   2417 	}
   2418 
   2419 	if (mode->flags & VID_DBLSCAN)
   2420 		v |= RADEON_CRTC2_DBL_SCAN_EN;
   2421 
   2422 	if (mode->flags & VID_INTERLACE)
   2423 		v |= RADEON_CRTC2_INTERLACE_EN;
   2424 
   2425 	if (mode->flags & VID_CSYNC) {
   2426 		v |= RADEON_CRTC2_CSYNC_EN;
   2427 		if (crtc == 1)
   2428 			v |= RADEON_CRTC2_VSYNC_TRISTAT;
   2429 	}
   2430 
   2431 	PUT32(sc, gencntl, v);
   2432 	DPRINTF(("CRTC%s_GEN_CNTL = %08x\n", crtc ? "2" : "", v));
   2433 
   2434 	/*
   2435 	 * CRTC_EXT_CNTL - preserve disable flags, set ATI linear and EXT_CNT
   2436 	 */
   2437 	v = GET32(sc, RADEON_CRTC_EXT_CNTL);
   2438 	if (crtc == 0) {
   2439 		v &= (RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2440 		    RADEON_CRTC_DISPLAY_DIS);
   2441 		v |= RADEON_XCRT_CNT_EN | RADEON_VGA_ATI_LINEAR;
   2442 		if (mode->flags & VID_CSYNC)
   2443 			v |= RADEON_CRTC_VSYNC_TRISTAT;
   2444 	}
   2445 	/* unconditional turn on CRT, in case first CRTC is DFP */
   2446 	v |= RADEON_CRTC_CRT_ON;
   2447 	PUT32(sc, RADEON_CRTC_EXT_CNTL, v);
   2448 	PRINTREG(RADEON_CRTC_EXT_CNTL);
   2449 
   2450 	hd = ((GET32(sc, htotaldisp) >> 16) + 1) * 8;
   2451 	vd = (GET32(sc, vtotaldisp) >> 16) + 1;
   2452 	DPRINTF(("res %d x %d\n", hd, vd));
   2453 
   2454 	if ((hd != mode->hdisplay) || (vd != mode->vdisplay)) {
   2455 
   2456 		/*
   2457 		 * H_TOTAL_DISP
   2458 		 */
   2459 		v = ((mode->hdisplay / 8) - 1) << 16;
   2460 		v |= (mode->htotal / 8) - 1;
   2461 		PRINTREG(RADEON_CRTC_H_TOTAL_DISP);
   2462 		PUT32(sc, htotaldisp, v);
   2463 		DPRINTF(("CRTC%s_H_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2464 		if (fphtotaldisp) {
   2465 			PRINTREG(RADEON_FP_CRTC_H_TOTAL_DISP);
   2466 			PUT32(sc, fphtotaldisp, v);
   2467 			DPRINTF(("FP_H%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2468 		}
   2469 		/*
   2470 		 * H_SYNC_STRT_WID
   2471 		 */
   2472 		v = (((mode->hsync_end - mode->hsync_start) / 8) << 16);
   2473 		v |= (mode->hsync_start - 8);	/* match xf86-video-radeon */
   2474 		if (mode->flags & VID_NHSYNC)
   2475 			v |= RADEON_CRTC_H_SYNC_POL;
   2476 		PUT32(sc, hsyncstrt, v);
   2477 		DPRINTF(("CRTC%s_H_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2478 		if (fphsyncstrt) {
   2479 			PUT32(sc, fphsyncstrt, v);
   2480 			DPRINTF(("FP_H%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2481 		}
   2482 
   2483 		/*
   2484 		 * V_TOTAL_DISP
   2485 		 */
   2486 		v = ((mode->vdisplay - 1) << 16);
   2487 		v |= (mode->vtotal - 1);
   2488 		PUT32(sc, vtotaldisp, v);
   2489 		DPRINTF(("CRTC%s_V_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2490 		if (fpvtotaldisp) {
   2491 			PUT32(sc, fpvtotaldisp, v);
   2492 			DPRINTF(("FP_V%s_TOTAL_DISP = %08x\n", crtc ? "2" : "", v));
   2493 		}
   2494 
   2495 		/*
   2496 		 * V_SYNC_STRT_WID
   2497 		 */
   2498 		v = ((mode->vsync_end - mode->vsync_start) << 16);
   2499 		v |= (mode->vsync_start - 1);
   2500 		if (mode->flags & VID_NVSYNC)
   2501 			v |= RADEON_CRTC_V_SYNC_POL;
   2502 		PUT32(sc, vsyncstrt, v);
   2503 		DPRINTF(("CRTC%s_V_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2504 		if (fpvsyncstrt) {
   2505 			PUT32(sc, fpvsyncstrt, v);
   2506 			DPRINTF(("FP_V%s_SYNC_STRT_WID = %08x\n", crtc ? "2" : "", v));
   2507 		}
   2508 	}
   2509 	radeonfb_program_vclk(sc, mode->dot_clock, crtc, flags);
   2510 
   2511 	switch (crtc) {
   2512 	case 0:
   2513 		PUT32(sc, RADEON_CRTC_OFFSET, 0);
   2514 		PUT32(sc, RADEON_CRTC_OFFSET_CNTL, 0);
   2515 		PUT32(sc, RADEON_CRTC_PITCH, pitch);
   2516 		CLR32(sc, RADEON_DISP_MERGE_CNTL, RADEON_DISP_RGB_OFFSET_EN);
   2517 
   2518 		CLR32(sc, RADEON_CRTC_EXT_CNTL,
   2519 		    RADEON_CRTC_VSYNC_DIS | RADEON_CRTC_HSYNC_DIS |
   2520 		    RADEON_CRTC_DISPLAY_DIS /* | RADEON_CRTC_DISP_REQ_EN_B */);
   2521 		CLR32(sc, RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B);
   2522 		PRINTREG(RADEON_CRTC_EXT_CNTL);
   2523 		PRINTREG(RADEON_CRTC_GEN_CNTL);
   2524 		PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   2525 		break;
   2526 
   2527 	case 1:
   2528 		PUT32(sc, RADEON_CRTC2_OFFSET, 0);
   2529 		PUT32(sc, RADEON_CRTC2_OFFSET_CNTL, 0);
   2530 		PUT32(sc, RADEON_CRTC2_PITCH, pitch);
   2531 		CLR32(sc, RADEON_DISP2_MERGE_CNTL, RADEON_DISP2_RGB_OFFSET_EN);
   2532 		CLR32(sc, RADEON_CRTC2_GEN_CNTL,
   2533 		    RADEON_CRTC2_VSYNC_DIS |
   2534 		    RADEON_CRTC2_HSYNC_DIS |
   2535 		    RADEON_CRTC2_DISP_DIS | RADEON_CRTC2_DISP_REQ_EN_B);
   2536 		PRINTREG(RADEON_CRTC2_GEN_CNTL);
   2537 		break;
   2538 	}
   2539 }
   2540 
   2541 int
   2542 radeonfb_isblank(struct radeonfb_display *dp)
   2543 {
   2544 	struct radeonfb_softc	*sc = dp->rd_softc;
   2545 	uint32_t	reg, mask;
   2546 
   2547 	if (IS_AVIVO(sc)) return 0;
   2548 
   2549 	if(!dp->rd_softc->sc_mapped)
   2550 		return 1;
   2551 
   2552 	if (dp->rd_crtcs[0].rc_number) {
   2553 		reg = RADEON_CRTC2_GEN_CNTL;
   2554 		mask = RADEON_CRTC2_DISP_DIS;
   2555 	} else {
   2556 		reg = RADEON_CRTC_EXT_CNTL;
   2557 		mask = RADEON_CRTC_DISPLAY_DIS;
   2558 	}
   2559 	return ((GET32(dp->rd_softc, reg) & mask) ? 1 : 0);
   2560 }
   2561 
   2562 void
   2563 radeonfb_blank(struct radeonfb_display *dp, int blank)
   2564 {
   2565 	struct radeonfb_softc	*sc = dp->rd_softc;
   2566 	uint32_t		reg, mask;
   2567 	uint32_t		fpreg, fpval;
   2568 	int			i;
   2569 
   2570 	if(IS_AVIVO(sc)) return;
   2571 
   2572 	if (!sc->sc_mapped)
   2573 		return;
   2574 
   2575 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   2576 
   2577 		if (dp->rd_crtcs[i].rc_number) {
   2578 			reg = RADEON_CRTC2_GEN_CNTL;
   2579 			mask = RADEON_CRTC2_DISP_DIS;
   2580 			fpreg = RADEON_FP2_GEN_CNTL;
   2581 			fpval = RADEON_FP2_ON;
   2582 		} else {
   2583 			reg = RADEON_CRTC_EXT_CNTL;
   2584 			mask = RADEON_CRTC_DISPLAY_DIS;
   2585 			fpreg = RADEON_FP_GEN_CNTL;
   2586 			fpval = RADEON_FP_FPON;
   2587 		}
   2588 
   2589 		if (blank) {
   2590 			SET32(sc, reg, mask);
   2591 			CLR32(sc, fpreg, fpval);
   2592 		} else {
   2593 			CLR32(sc, reg, mask);
   2594 			SET32(sc, fpreg, fpval);
   2595 		}
   2596 	}
   2597 	PRINTREG(RADEON_FP_GEN_CNTL);
   2598 	PRINTREG(RADEON_FP2_GEN_CNTL);
   2599 }
   2600 
   2601 void
   2602 radeonfb_init_screen(void *cookie, struct vcons_screen *scr, int existing,
   2603     long *defattr)
   2604 {
   2605 	struct radeonfb_display *dp = cookie;
   2606 	struct rasops_info *ri = &scr->scr_ri;
   2607 
   2608 	/* initialize font subsystem */
   2609 	wsfont_init();
   2610 
   2611 	scr->scr_flags |= VCONS_LOADFONT;
   2612 
   2613 	DPRINTF(("init screen called, existing %d\n", existing));
   2614 
   2615 	ri->ri_depth = dp->rd_bpp;
   2616 	ri->ri_width = dp->rd_virtx;
   2617 	ri->ri_height = dp->rd_virty;
   2618 	ri->ri_stride = dp->rd_stride;
   2619 	ri->ri_flg = RI_CENTER;
   2620 	switch (ri->ri_depth) {
   2621 		case 8:
   2622 			ri->ri_flg |= RI_ENABLE_ALPHA | RI_8BIT_IS_RGB | RI_PREFER_ALPHA;
   2623 			break;
   2624 		case 32:
   2625 			ri->ri_flg |= RI_ENABLE_ALPHA | RI_PREFER_ALPHA;
   2626 			/* we run radeons in RGB even on SPARC hardware */
   2627 			ri->ri_rnum = 8;
   2628 			ri->ri_gnum = 8;
   2629 			ri->ri_bnum = 8;
   2630 			ri->ri_rpos = 16;
   2631 			ri->ri_gpos = 8;
   2632 			ri->ri_bpos = 0;
   2633 			break;
   2634 	}
   2635 
   2636 	ri->ri_bits = (void *)dp->rd_fbptr;
   2637 
   2638 #ifdef VCONS_DRAW_INTR
   2639 	scr->scr_flags |= VCONS_DONT_READ;
   2640 #endif
   2641 
   2642 	if (existing) {
   2643 		ri->ri_flg |= RI_CLEAR;
   2644 
   2645 		/* start a modeswitch now */
   2646 		//radeonfb_modeswitch(dp);
   2647 	}
   2648 
   2649 	/*
   2650 	 * XXX: font selection should be based on properties, with some
   2651 	 * normal/reasonable default.
   2652 	 */
   2653 
   2654 	/* initialize and look for an initial font */
   2655 	rasops_init(ri, 0, 0);
   2656 	ri->ri_caps = WSSCREEN_UNDERLINE | WSSCREEN_HILIT |
   2657 		    WSSCREEN_WSCOLORS | WSSCREEN_REVERSE | WSSCREEN_RESIZE;
   2658 
   2659 	rasops_reconfig(ri, dp->rd_virty / ri->ri_font->fontheight,
   2660 		    dp->rd_virtx / ri->ri_font->fontwidth);
   2661 
   2662 	/* enable acceleration */
   2663 	dp->rd_putchar = ri->ri_ops.putchar;
   2664 	ri->ri_ops.copyrows = radeonfb_copyrows;
   2665 	ri->ri_ops.copycols = radeonfb_copycols;
   2666 	ri->ri_ops.eraserows = radeonfb_eraserows;
   2667 	ri->ri_ops.erasecols = radeonfb_erasecols;
   2668 	/* pick a putchar method based on font and Radeon model */
   2669 	if (ri->ri_font->stride < ri->ri_font->fontwidth) {
   2670 		/* got a bitmap font */
   2671 #if !defined(RADEONFB_ALWAYS_ACCEL_PUTCHAR)
   2672 		if (IS_R300(dp->rd_softc) && 0) {
   2673 			/*
   2674 			 * radeonfb_putchar() doesn't work right on some R3xx
   2675 			 * so we use software drawing here, the wrapper just
   2676 			 *  makes sure the engine is idle before scribbling
   2677 			 * into vram
   2678 			 */
   2679 			ri->ri_ops.putchar = radeonfb_putchar_wrapper;
   2680 		} else
   2681 #endif
   2682 			ri->ri_ops.putchar = radeonfb_putchar;
   2683 	} else {
   2684 		/* got an alpha font */
   2685 		switch(ri->ri_depth) {
   2686 			case 32:
   2687 				ri->ri_ops.putchar = radeonfb_putchar_aa32;
   2688 				break;
   2689 			case 8:
   2690 				ri->ri_ops.putchar = radeonfb_putchar_aa8;
   2691 				break;
   2692 			default:
   2693 				/* XXX this should never happen */
   2694 				panic("%s: depth is not 8 or 32 but we got an" \
   2695 					 " alpha font?!", __func__);
   2696 		}
   2697 	}
   2698 	ri->ri_ops.cursor = radeonfb_cursor;
   2699 }
   2700 
   2701 static uint32_t
   2702 radeonfb_avivo_INMC(struct radeonfb_softc *sc, uint32_t addr)
   2703 {
   2704 	uint32_t data;
   2705 
   2706 	PUT32(sc, AVIVO_MC_INDEX, (addr & 0xff) | 0x7f0000);
   2707 	(void)GET32(sc, AVIVO_MC_INDEX);
   2708 	data = GET32(sc, AVIVO_MC_DATA);
   2709 	PUT32(sc, AVIVO_MC_INDEX, 0);
   2710 	(void)GET32(sc, AVIVO_MC_INDEX);
   2711 	return data;
   2712 }
   2713 
   2714 static void
   2715 radeonfb_avivo_OUTMC(struct radeonfb_softc *sc, uint32_t addr, uint32_t data)
   2716 {
   2717 
   2718 	PUT32(sc, AVIVO_MC_INDEX, (addr & 0xff) | 0x7f0000);
   2719 	(void)GET32(sc, AVIVO_MC_INDEX);
   2720 	PUT32(sc, AVIVO_MC_DATA, data);
   2721 	PUT32(sc, AVIVO_MC_INDEX, 0);
   2722 	(void)GET32(sc, AVIVO_MC_INDEX);
   2723 }
   2724 
   2725 void
   2726 radeonfb_set_fbloc(struct radeonfb_softc *sc)
   2727 {
   2728 	uint32_t	gen = 0, ext = 0, gen2 = 0;
   2729 	uint32_t	agploc, aperbase, apersize, mcfbloc;
   2730 
   2731 
   2732 	if (IS_AVIVO(sc)) {
   2733 		agploc = radeonfb_avivo_INMC(sc, R520_MC_AGP_LOCATION);
   2734 	} else {
   2735 		gen = GET32(sc, RADEON_CRTC_GEN_CNTL);
   2736 		/* XXX */
   2737 		ext = GET32(sc, RADEON_CRTC_EXT_CNTL) & ~RADEON_CRTC_DISPLAY_DIS;
   2738 		agploc = GET32(sc, RADEON_MC_AGP_LOCATION);
   2739 		PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISP_REQ_EN_B);
   2740 		PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISPLAY_DIS);
   2741 #if 0
   2742 		PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISPLAY_DIS);
   2743 		PUT32(sc, RADEON_CRTC_EXT_CNTL, ext | RADEON_CRTC_DISP_REQ_EN_B);
   2744 #endif
   2745 
   2746 		if (HAS_CRTC2(sc)) {
   2747 			gen2 = GET32(sc, RADEON_CRTC2_GEN_CNTL);
   2748 			PUT32(sc, RADEON_CRTC2_GEN_CNTL,
   2749 			    gen2 | RADEON_CRTC2_DISP_REQ_EN_B);
   2750 		}
   2751 
   2752 		delay(100000);
   2753 	}
   2754 
   2755 	aperbase = GET32(sc, RADEON_CONFIG_APER_0_BASE);
   2756 	apersize = GET32(sc, RADEON_CONFIG_APER_SIZE);
   2757 
   2758 
   2759 	mcfbloc = (aperbase >> 16) |
   2760 	    ((aperbase + (apersize - 1)) & 0xffff0000);
   2761 
   2762 	sc->sc_aperbase = (mcfbloc & 0xffff) << 16;
   2763 	sc->sc_memsz = apersize;
   2764 	DPRINTF(("aperbase = %08x\n", aperbase));
   2765 
   2766 	if (((agploc & 0xffff) << 16) !=
   2767 	    ((mcfbloc & 0xffff0000U) + 0x10000)) {
   2768 		agploc = mcfbloc & 0xffff0000U;
   2769 		agploc |= ((agploc + 0x10000) >> 16);
   2770 	}
   2771 
   2772 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2773 
   2774 	if (IS_AVIVO(sc)) {
   2775 		radeonfb_avivo_OUTMC(sc, R520_MC_FB_LOCATION, mcfbloc);
   2776 		radeonfb_avivo_OUTMC(sc, R520_MC_AGP_LOCATION, agploc);
   2777 		PRINTREG(AVIVO_HDP_FB_LOCATION);
   2778 		DPRINTF((" FB loc %08x\n", radeonfb_avivo_INMC(sc, R520_MC_FB_LOCATION)));
   2779 		DPRINTF(("AGP loc %08x\n", radeonfb_avivo_INMC(sc, R520_MC_AGP_LOCATION)));
   2780 	} else {
   2781 		PUT32(sc, RADEON_MC_FB_LOCATION, mcfbloc);
   2782 		PUT32(sc, RADEON_MC_AGP_LOCATION, agploc);
   2783 		PRINTREG(RADEON_MC_FB_LOCATION);
   2784 		PRINTREG(RADEON_MC_AGP_LOCATION);
   2785 
   2786 		PUT32(sc, RADEON_DISPLAY_BASE_ADDR, sc->sc_aperbase);
   2787 
   2788 		if (HAS_CRTC2(sc))
   2789 			PUT32(sc, RADEON_DISPLAY2_BASE_ADDR, sc->sc_aperbase);
   2790 
   2791 		PUT32(sc, RADEON_OV0_BASE_ADDR, sc->sc_aperbase);
   2792 		delay(100000);
   2793 
   2794 		PUT32(sc, RADEON_CRTC_GEN_CNTL, gen);
   2795 		PUT32(sc, RADEON_CRTC_EXT_CNTL, ext);
   2796 
   2797 		if (HAS_CRTC2(sc))
   2798 			PUT32(sc, RADEON_CRTC2_GEN_CNTL, gen2);
   2799 	}
   2800 #if 0
   2801 	/* XXX: what is this AGP garbage? :-) */
   2802 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2803 #endif
   2804 }
   2805 
   2806 void
   2807 radeonfb_init_misc(struct radeonfb_softc *sc)
   2808 {
   2809 	PUT32(sc, RADEON_BUS_CNTL,
   2810 	    RADEON_BUS_MASTER_DIS |
   2811 	    RADEON_BUS_PREFETCH_MODE_ACT |
   2812 	    RADEON_BUS_PCI_READ_RETRY_EN |
   2813 	    RADEON_BUS_PCI_WRT_RETRY_EN |
   2814 	    (3 << RADEON_BUS_RETRY_WS_SHIFT) |
   2815 	    RADEON_BUS_MSTR_RD_MULT |
   2816 	    RADEON_BUS_MSTR_RD_LINE |
   2817 	    RADEON_BUS_RD_DISCARD_EN |
   2818 	    RADEON_BUS_MSTR_DISCONNECT_EN |
   2819 	    RADEON_BUS_READ_BURST);
   2820 
   2821 	PUT32(sc, RADEON_BUS_CNTL1, 0xf0);
   2822 	/* PUT32(sc, RADEON_SEPROM_CNTL1, 0x09ff0000); */
   2823 	PUT32(sc, RADEON_FCP_CNTL, RADEON_FCP0_SRC_GND);
   2824 	PUT32(sc, RADEON_RBBM_CNTL,
   2825 	    (3 << RADEON_RB_SETTLE_SHIFT) |
   2826 	    (4 << RADEON_ABORTCLKS_HI_SHIFT) |
   2827 	    (4 << RADEON_ABORTCLKS_CP_SHIFT) |
   2828 	    (4 << RADEON_ABORTCLKS_CFIFO_SHIFT));
   2829 
   2830 	/* XXX: figure out what these mean! */
   2831 	PUT32(sc, RADEON_AGP_CNTL, 0x00100000);
   2832 	PUT32(sc, RADEON_HOST_PATH_CNTL, 0);
   2833 #if 0
   2834 	PUT32(sc, RADEON_DISP_MISC_CNTL, 0x5bb00400);
   2835 #endif
   2836 
   2837 	PUT32(sc, RADEON_GEN_INT_CNTL, 0);
   2838 	PUT32(sc, RADEON_GEN_INT_STATUS, GET32(sc, RADEON_GEN_INT_STATUS));
   2839 }
   2840 
   2841 static void
   2842 radeonfb_putpal(struct radeonfb_display *dp, int idx, int r, int g, int b)
   2843 {
   2844 	struct radeonfb_softc *sc = dp->rd_softc;
   2845 	int		crtc, cc;
   2846 	uint32_t	vclk;
   2847 
   2848 	if (IS_AVIVO(sc)) {
   2849 		for (cc = 0; cc < dp->rd_ncrtcs; cc++) {
   2850 			crtc = dp->rd_crtcs[cc].rc_number;
   2851 
   2852 			if (crtc)
   2853 				PUT32(sc, AVIVO_DC_LUT_RW_SELECT, 1);
   2854 			else
   2855 				PUT32(sc, AVIVO_DC_LUT_RW_SELECT, 0);
   2856 
   2857 			PUT32(sc, AVIVO_DC_LUT_RW_INDEX, idx);
   2858 	            	PUT32(sc, AVIVO_DC_LUT_30_COLOR,
   2859 	            	    (r << 22) | (g << 12) | (b << 2));
   2860 		}
   2861 
   2862 	} else {
   2863 		vclk = GETPLL(sc, RADEON_VCLK_ECP_CNTL);
   2864 		PUTPLL(sc, RADEON_VCLK_ECP_CNTL,
   2865 		    vclk & ~RADEON_PIXCLK_DAC_ALWAYS_ONb);
   2866 
   2867 		/* init the palette for every CRTC used by this display */
   2868 		for (cc = 0; cc < dp->rd_ncrtcs; cc++) {
   2869 			crtc = dp->rd_crtcs[cc].rc_number;
   2870 
   2871 			if (crtc)
   2872 				SET32(sc, RADEON_DAC_CNTL2,
   2873 				    RADEON_DAC2_PALETTE_ACC_CTL);
   2874 			else
   2875 				CLR32(sc, RADEON_DAC_CNTL2,
   2876 				    RADEON_DAC2_PALETTE_ACC_CTL);
   2877 
   2878 			PUT32(sc, RADEON_PALETTE_INDEX, idx);
   2879 	            	PUT32(sc, RADEON_PALETTE_30_DATA,
   2880 	            	    (r << 22) | (g << 12) | (b << 2));
   2881 		}
   2882 
   2883 		PUTPLL(sc, RADEON_VCLK_ECP_CNTL, vclk);
   2884 	}
   2885 }
   2886 
   2887 /*
   2888  * This loads a linear color map for true color.
   2889  */
   2890 void
   2891 radeonfb_init_palette(struct radeonfb_display *dp)
   2892 {
   2893 	int		i;
   2894 
   2895 #define	DAC_WIDTH ((1 << 10) - 1)
   2896 #define	CLUT_WIDTH ((1 << 8) - 1)
   2897 #define	CLUT_COLOR(i)      ((i * DAC_WIDTH * 2 / CLUT_WIDTH + 1) / 2)
   2898 
   2899 	if (dp->rd_bpp == 8) {
   2900 
   2901 		/* R3G3B2 palette */
   2902 		uint32_t tmp, r, g, b;
   2903 
   2904 	        for (i = 0; i <= CLUT_WIDTH; ++i) {
   2905 			tmp = i & 0xe0;
   2906 
   2907 			/*
   2908 			 * replicate bits so 0xe0 maps to a red value of 0xff
   2909 			 * in order to make white look actually white
   2910 			 */
   2911 			tmp |= (tmp >> 3) | (tmp >> 6);
   2912 			r = tmp;
   2913 
   2914 			tmp = (i & 0x1c) << 3;
   2915 			tmp |= (tmp >> 3) | (tmp >> 6);
   2916 			g = tmp;
   2917 
   2918 			tmp = (i & 0x03) << 6;
   2919 			tmp |= tmp >> 2;
   2920 			tmp |= tmp >> 4;
   2921 			b = tmp;
   2922 
   2923 			radeonfb_putpal(dp, i, r, g, b);
   2924 		}
   2925 	} else {
   2926 		/* linear ramp */
   2927 		for (i = 0; i <= CLUT_WIDTH; ++i) {
   2928 			radeonfb_putpal(dp, i, i, i, i);
   2929 		}
   2930 	}
   2931 }
   2932 
   2933 static int
   2934 radeonfb_putcmap(struct radeonfb_display *dp, struct wsdisplay_cmap *cm)
   2935 {
   2936 	u_char *r, *g, *b;
   2937 	u_int index = cm->index;
   2938 	u_int count = cm->count;
   2939 	int i, error;
   2940 	u_char rbuf[256], gbuf[256], bbuf[256];
   2941 
   2942 #ifdef GENFB_DEBUG
   2943 	aprint_debug("putcmap: %d %d\n",index, count);
   2944 #endif
   2945 	if (index >= 256 || count > 256 - index)
   2946 		return EINVAL;
   2947 	error = copyin(cm->red, &rbuf[index], count);
   2948 	if (error)
   2949 		return error;
   2950 	error = copyin(cm->green, &gbuf[index], count);
   2951 	if (error)
   2952 		return error;
   2953 	error = copyin(cm->blue, &bbuf[index], count);
   2954 	if (error)
   2955 		return error;
   2956 
   2957 	memcpy(&dp->rd_cmap_red[index], &rbuf[index], count);
   2958 	memcpy(&dp->rd_cmap_green[index], &gbuf[index], count);
   2959 	memcpy(&dp->rd_cmap_blue[index], &bbuf[index], count);
   2960 
   2961 	r = &dp->rd_cmap_red[index];
   2962 	g = &dp->rd_cmap_green[index];
   2963 	b = &dp->rd_cmap_blue[index];
   2964 
   2965 	for (i = 0; i < count; i++) {
   2966 		radeonfb_putpal(dp, index, *r, *g, *b);
   2967 		index++;
   2968 		r++, g++, b++;
   2969 	}
   2970 	return 0;
   2971 }
   2972 
   2973 static int
   2974 radeonfb_getcmap(struct radeonfb_display *dp, struct wsdisplay_cmap *cm)
   2975 {
   2976 	u_int index = cm->index;
   2977 	u_int count = cm->count;
   2978 	int error;
   2979 
   2980 	if (index >= 256 || count > 256 - index)
   2981 		return EINVAL;
   2982 
   2983 	error = copyout(&dp->rd_cmap_red[index],   cm->red,   count);
   2984 	if (error)
   2985 		return error;
   2986 	error = copyout(&dp->rd_cmap_green[index], cm->green, count);
   2987 	if (error)
   2988 		return error;
   2989 	error = copyout(&dp->rd_cmap_blue[index],  cm->blue,  count);
   2990 	if (error)
   2991 		return error;
   2992 
   2993 	return 0;
   2994 }
   2995 
   2996 /*
   2997  * Bugs in some R300 hardware requires this when accessing CLOCK_CNTL_INDEX.
   2998  */
   2999 void
   3000 radeonfb_r300cg_workaround(struct radeonfb_softc *sc)
   3001 {
   3002 	uint32_t	tmp, save;
   3003 
   3004 	save = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   3005 	tmp = save & ~(0x3f | RADEON_PLL_WR_EN);
   3006 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, tmp);
   3007 	tmp = GET32(sc, RADEON_CLOCK_CNTL_DATA);
   3008 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, save);
   3009 }
   3010 
   3011 /*
   3012  * Acceleration entry points.
   3013  */
   3014 
   3015 /* this one draws characters using bitmap fonts */
   3016 static void
   3017 radeonfb_putchar(void *cookie, int row, int col, u_int c, long attr)
   3018 {
   3019 	struct rasops_info	*ri = cookie;
   3020 	struct vcons_screen	*scr = ri->ri_hw;
   3021 	struct radeonfb_display	*dp = scr->scr_cookie;
   3022 	struct radeonfb_softc	*sc = dp->rd_softc;
   3023 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   3024 	uint32_t		w, h;
   3025 	int			xd, yd, offset, i;
   3026 	uint32_t		bg, fg, gmc;
   3027 	uint32_t		reg;
   3028 	uint8_t			*data8;
   3029 	uint16_t		*data16;
   3030 	uint32_t		*data32;
   3031 	void			*data;
   3032 
   3033 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   3034 		return;
   3035 
   3036 	if (!CHAR_IN_FONT(c, font))
   3037 		return;
   3038 
   3039 	w = font->fontwidth;
   3040 	h = font->fontheight;
   3041 
   3042 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   3043 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   3044 
   3045 	xd = ri->ri_xorigin + col * w;
   3046 	yd = ri->ri_yorigin + row * h;
   3047 
   3048 	if (c == 0x20) {
   3049 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   3050 		return;
   3051 	}
   3052 	data = WSFONT_GLYPH(c, font);
   3053 
   3054 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3055 
   3056 	radeonfb_wait_fifo(sc, 9);
   3057 
   3058 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3059 	    RADEON_GMC_BRUSH_NONE |
   3060 	    RADEON_GMC_SRC_DATATYPE_MONO_FG_BG |
   3061 	    RADEON_GMC_DST_CLIPPING |
   3062 	    RADEON_ROP3_S |
   3063 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   3064 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3065 	    RADEON_GMC_WR_MSK_DIS |
   3066 	    gmc);
   3067 
   3068 	PUT32(sc, RADEON_SC_LEFT, xd);
   3069 	PUT32(sc, RADEON_SC_RIGHT, xd + w);
   3070 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, fg);
   3071 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, bg);
   3072 	PUT32(sc, RADEON_DP_CNTL,
   3073 	    RADEON_DST_X_LEFT_TO_RIGHT |
   3074 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   3075 
   3076 	PUT32(sc, RADEON_SRC_X_Y, 0);
   3077 	offset = 32 - (font->stride << 3);
   3078 	PUT32(sc, RADEON_DST_X_Y, ((xd - offset) << 16) | yd);
   3079 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (32 << 16) | h);
   3080 
   3081 	radeonfb_wait_fifo(sc, h);
   3082 	switch (font->stride) {
   3083 		case 1: {
   3084 			data8 = data;
   3085 			for (i = 0; i < h; i++) {
   3086 				reg = *data8;
   3087 #if BYTE_ORDER == LITTLE_ENDIAN
   3088 				reg = reg << 24;
   3089 #endif
   3090 				bus_space_write_stream_4(sc->sc_regt,
   3091 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   3092 				data8++;
   3093 			}
   3094 			break;
   3095 		}
   3096 		case 2: {
   3097 			data16 = data;
   3098 			for (i = 0; i < h; i++) {
   3099 				reg = *data16;
   3100 #if BYTE_ORDER == LITTLE_ENDIAN
   3101 				reg = reg << 16;
   3102 #endif
   3103 				bus_space_write_stream_4(sc->sc_regt,
   3104 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   3105 				data16++;
   3106 			}
   3107 			break;
   3108 		}
   3109 		case 4: {
   3110 			data32 = data;
   3111 			for (i = 0; i < h; i++) {
   3112 				reg = *data32;
   3113 				bus_space_write_stream_4(sc->sc_regt,
   3114 				    sc->sc_regh, RADEON_HOST_DATA0, reg);
   3115 				data32++;
   3116 			}
   3117 			break;
   3118 		}
   3119 	}
   3120 	if (attr & 1)
   3121 		radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   3122 }
   3123 
   3124 /* ... while this one is for anti-aliased ones */
   3125 static void
   3126 radeonfb_putchar_aa32(void *cookie, int row, int col, u_int c, long attr)
   3127 {
   3128 	struct rasops_info	*ri = cookie;
   3129 	struct vcons_screen	*scr = ri->ri_hw;
   3130 	struct radeonfb_display	*dp = scr->scr_cookie;
   3131 	struct radeonfb_softc	*sc = dp->rd_softc;
   3132 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   3133 	uint32_t		bg, fg, gmc;
   3134 	uint8_t			*data;
   3135 	int			w, h, xd, yd;
   3136 	int 			i, r, g, b, aval;
   3137 	int 			rf, gf, bf, rb, gb, bb;
   3138 	uint32_t 		pixel;
   3139 	int rv;
   3140 
   3141 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   3142 		return;
   3143 
   3144 	if (!CHAR_IN_FONT(c, font))
   3145 		return;
   3146 
   3147 	w = font->fontwidth;
   3148 	h = font->fontheight;
   3149 
   3150 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   3151 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   3152 
   3153 	xd = ri->ri_xorigin + col * w;
   3154 	yd = ri->ri_yorigin + row * h;
   3155 
   3156 	if (c == 0x20) {
   3157 		radeonfb_rectfill(dp, xd, yd, w, h, bg);
   3158 		if (attr & 1)
   3159 			radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   3160 		return;
   3161 	}
   3162 	rv = glyphcache_try(&dp->rd_gc, c, xd, yd, attr);
   3163 	if (rv == GC_OK)
   3164 		return;
   3165 
   3166 	data = WSFONT_GLYPH(c, font);
   3167 
   3168 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3169 
   3170 	radeonfb_wait_fifo(sc, 5);
   3171 
   3172 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3173 	    RADEON_GMC_BRUSH_NONE |
   3174 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3175 	    RADEON_ROP3_S |
   3176 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   3177 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3178 	    RADEON_GMC_WR_MSK_DIS |
   3179 	    gmc);
   3180 
   3181 	PUT32(sc, RADEON_DP_CNTL,
   3182 	    RADEON_DST_X_LEFT_TO_RIGHT |
   3183 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   3184 
   3185 	PUT32(sc, RADEON_SRC_X_Y, 0);
   3186 	PUT32(sc, RADEON_DST_X_Y, (xd << 16) | yd);
   3187 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (w << 16) | h);
   3188 
   3189 	rf = (fg >> 16) & 0xff;
   3190 	rb = (bg >> 16) & 0xff;
   3191 	gf = (fg >> 8) & 0xff;
   3192 	gb = (bg >> 8) & 0xff;
   3193 	bf =  fg & 0xff;
   3194 	bb =  bg & 0xff;
   3195 
   3196 	/*
   3197 	 * I doubt we can upload data faster than even the slowest Radeon
   3198 	 * could process them, especially when doing the alpha blending stuff
   3199 	 * along the way, so just make sure there's some room in the FIFO and
   3200 	 * then hammer away
   3201 	 * As it turns out we can, so make periodic stops to let the FIFO
   3202 	 * drain.
   3203 	 */
   3204 	radeonfb_wait_fifo(sc, 20);
   3205 	for (i = 0; i < ri->ri_fontscale; i++) {
   3206 		aval = *data;
   3207 		data++;
   3208 		if (aval == 0) {
   3209 			pixel = bg;
   3210 		} else if (aval == 255) {
   3211 			pixel = fg;
   3212 		} else {
   3213 			r = aval * rf + (255 - aval) * rb;
   3214 			g = aval * gf + (255 - aval) * gb;
   3215 			b = aval * bf + (255 - aval) * bb;
   3216 			pixel = (r & 0xff00) << 8 |
   3217 			        (g & 0xff00) |
   3218 			        (b & 0xff00) >> 8;
   3219 		}
   3220 		if (i & 16)
   3221 			radeonfb_wait_fifo(sc, 20);
   3222 		PUT32(sc, RADEON_HOST_DATA0, pixel);
   3223 	}
   3224 	if (rv == GC_ADD) {
   3225 		glyphcache_add(&dp->rd_gc, c, xd, yd);
   3226 	} else if (attr & 1)
   3227 		radeonfb_rectfill(dp, xd, yd + h - 2, w, 1, fg);
   3228 }
   3229 
   3230 static void
   3231 radeonfb_putchar_aa8(void *cookie, int row, int col, u_int c, long attr)
   3232 {
   3233 	struct rasops_info	*ri = cookie;
   3234 	struct vcons_screen	*scr = ri->ri_hw;
   3235 	struct radeonfb_display	*dp = scr->scr_cookie;
   3236 	struct radeonfb_softc	*sc = dp->rd_softc;
   3237 	struct wsdisplay_font	*font = PICK_FONT(ri, c);
   3238 	uint32_t bg, fg, latch = 0, bg8, fg8, pixel, gmc;
   3239 	int i, x, y, wi, he, r, g, b, aval;
   3240 	int r1, g1, b1, r0, g0, b0, fgo, bgo;
   3241 	uint8_t *data8;
   3242 	int rv, cnt;
   3243 
   3244 	if (dp->rd_wsmode != WSDISPLAYIO_MODE_EMUL)
   3245 		return;
   3246 
   3247 	if (!CHAR_IN_FONT(c, font))
   3248 		return;
   3249 
   3250 	wi = font->fontwidth;
   3251 	he = font->fontheight;
   3252 
   3253 	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
   3254 	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
   3255 
   3256 	x = ri->ri_xorigin + col * wi;
   3257 	y = ri->ri_yorigin + row * he;
   3258 
   3259 	if (c == 0x20) {
   3260 		radeonfb_rectfill(dp, x, y, wi, he, bg);
   3261 		if (attr & 1)
   3262 			radeonfb_rectfill(dp, x, y + he - 2, wi, 1, fg);
   3263 		return;
   3264 	}
   3265 	rv = glyphcache_try(&dp->rd_gc, c, x, y, attr);
   3266 	if (rv == GC_OK)
   3267 		return;
   3268 
   3269 	data8 = WSFONT_GLYPH(c, font);
   3270 
   3271 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3272 
   3273 	radeonfb_wait_fifo(sc, 5);
   3274 
   3275 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3276 	    RADEON_GMC_BRUSH_NONE |
   3277 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3278 	    RADEON_ROP3_S |
   3279 	    RADEON_DP_SRC_SOURCE_HOST_DATA |
   3280 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3281 	    RADEON_GMC_WR_MSK_DIS |
   3282 	    gmc);
   3283 
   3284 	PUT32(sc, RADEON_DP_CNTL,
   3285 	    RADEON_DST_X_LEFT_TO_RIGHT |
   3286 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   3287 
   3288 	PUT32(sc, RADEON_SRC_X_Y, 0);
   3289 	PUT32(sc, RADEON_DST_X_Y, (x << 16) | y);
   3290 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (wi << 16) | he);
   3291 
   3292 	/*
   3293 	 * we need the RGB colours here, so get offsets into rasops_cmap
   3294 	 */
   3295 	fgo = ((attr >> 24) & 0xf) * 3;
   3296 	bgo = ((attr >> 16) & 0xf) * 3;
   3297 
   3298 	r0 = rasops_cmap[bgo];
   3299 	r1 = rasops_cmap[fgo];
   3300 	g0 = rasops_cmap[bgo + 1];
   3301 	g1 = rasops_cmap[fgo + 1];
   3302 	b0 = rasops_cmap[bgo + 2];
   3303 	b1 = rasops_cmap[fgo + 2];
   3304 #define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6))
   3305 	bg8 = R3G3B2(r0, g0, b0);
   3306 	fg8 = R3G3B2(r1, g1, b1);
   3307 
   3308 	radeonfb_wait_fifo(sc, 20);
   3309 	cnt = 0;
   3310 	for (i = 0; i < ri->ri_fontscale; i++) {
   3311 		aval = *data8;
   3312 		if (aval == 0) {
   3313 			pixel = bg8;
   3314 		} else if (aval == 255) {
   3315 			pixel = fg8;
   3316 		} else {
   3317 			r = aval * r1 + (255 - aval) * r0;
   3318 			g = aval * g1 + (255 - aval) * g0;
   3319 			b = aval * b1 + (255 - aval) * b0;
   3320 			pixel = ((r & 0xe000) >> 8) |
   3321 				((g & 0xe000) >> 11) |
   3322 				((b & 0xc000) >> 14);
   3323 		}
   3324 		latch |= pixel << (8 * (i & 3));
   3325 		/* write in 32bit chunks */
   3326 		if ((i & 3) == 3) {
   3327 			PUT32(sc, RADEON_HOST_DATA0, latch);
   3328 			/*
   3329 			 * not strictly necessary, old data should be shifted
   3330 			 * out
   3331 			 */
   3332 			latch = 0;
   3333 			cnt++;
   3334 			if (cnt > 16) {
   3335 				cnt = 0;
   3336 				radeonfb_wait_fifo(sc, 20);
   3337 			}
   3338 		}
   3339 		data8++;
   3340 	}
   3341 	/* if we have pixels left in latch write them out */
   3342 	if ((i & 3) != 0) {
   3343 		/*
   3344 		 * radeon is weird - apparently leftover pixels are written
   3345 		 * from the middle, not from the left as everything else
   3346 		 */
   3347 		PUT32(sc, RADEON_HOST_DATA0, latch);
   3348 	}
   3349 
   3350 	if (rv == GC_ADD) {
   3351 		glyphcache_add(&dp->rd_gc, c, x, y);
   3352 	} else
   3353 		if (attr & 1)
   3354 			radeonfb_rectfill(dp, x, y + he - 2, wi, 1, fg);
   3355 }
   3356 
   3357 /*
   3358  * wrapper for software character drawing
   3359  * just sync the engine and call rasops*_putchar()
   3360  */
   3361 
   3362 #ifndef RADEONFB_ALWAYS_ACCEL_PUTCHAR
   3363 static void
   3364 radeonfb_putchar_wrapper(void *cookie, int row, int col, u_int c, long attr)
   3365 {
   3366 	struct rasops_info	*ri = cookie;
   3367 	struct vcons_screen	*scr = ri->ri_hw;
   3368 	struct radeonfb_display	*dp = scr->scr_cookie;
   3369 
   3370 	radeonfb_engine_idle(dp->rd_softc);
   3371 	dp->rd_putchar(ri, row, col, c, attr);
   3372 }
   3373 #endif
   3374 
   3375 static void
   3376 radeonfb_eraserows(void *cookie, int row, int nrows, long fillattr)
   3377 {
   3378 	struct rasops_info	*ri = cookie;
   3379 	struct vcons_screen	*scr = ri->ri_hw;
   3380 	struct radeonfb_display	*dp = scr->scr_cookie;
   3381 	uint32_t		x, y, w, h, fg, bg, ul;
   3382 
   3383 	/* XXX: check for full emulation mode? */
   3384 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3385 		x = ri->ri_xorigin;
   3386 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3387 		w = ri->ri_emuwidth;
   3388 		h = ri->ri_font->fontheight * nrows;
   3389 
   3390 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   3391 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   3392 	}
   3393 }
   3394 
   3395 static void
   3396 radeonfb_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
   3397 {
   3398 	struct rasops_info	*ri = cookie;
   3399 	struct vcons_screen	*scr = ri->ri_hw;
   3400 	struct radeonfb_display	*dp = scr->scr_cookie;
   3401 	uint32_t		x, ys, yd, w, h;
   3402 
   3403 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3404 		x = ri->ri_xorigin;
   3405 		ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow;
   3406 		yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow;
   3407 		w = ri->ri_emuwidth;
   3408 		h = ri->ri_font->fontheight * nrows;
   3409 		radeonfb_bitblt(dp, x, ys, x, yd, w, h,
   3410 		    RADEON_ROP3_S);
   3411 	}
   3412 }
   3413 
   3414 static void
   3415 radeonfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
   3416 {
   3417 	struct rasops_info	*ri = cookie;
   3418 	struct vcons_screen	*scr = ri->ri_hw;
   3419 	struct radeonfb_display	*dp = scr->scr_cookie;
   3420 	uint32_t		xs, xd, y, w, h;
   3421 
   3422 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3423 		xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol;
   3424 		xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol;
   3425 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3426 		w = ri->ri_font->fontwidth * ncols;
   3427 		h = ri->ri_font->fontheight;
   3428 		radeonfb_bitblt(dp, xs, y, xd, y, w, h,
   3429 		    RADEON_ROP3_S);
   3430 	}
   3431 }
   3432 
   3433 static void
   3434 radeonfb_erasecols(void *cookie, int row, int startcol, int ncols,
   3435     long fillattr)
   3436 {
   3437 	struct rasops_info	*ri = cookie;
   3438 	struct vcons_screen	*scr = ri->ri_hw;
   3439 	struct radeonfb_display	*dp = scr->scr_cookie;
   3440 	uint32_t		x, y, w, h, fg, bg, ul;
   3441 
   3442 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3443 		x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol;
   3444 		y = ri->ri_yorigin + ri->ri_font->fontheight * row;
   3445 		w = ri->ri_font->fontwidth * ncols;
   3446 		h = ri->ri_font->fontheight;
   3447 
   3448 		rasops_unpack_attr(fillattr, &fg, &bg, &ul);
   3449 		radeonfb_rectfill(dp, x, y, w, h, ri->ri_devcmap[bg & 0xf]);
   3450 	}
   3451 }
   3452 
   3453 static void
   3454 radeonfb_cursor(void *cookie, int on, int row, int col)
   3455 {
   3456 	struct rasops_info *ri = cookie;
   3457 	struct vcons_screen *scr = ri->ri_hw;
   3458 	struct radeonfb_display	*dp = scr->scr_cookie;
   3459 	int x, y, wi, he;
   3460 
   3461 	wi = ri->ri_font->fontwidth;
   3462 	he = ri->ri_font->fontheight;
   3463 
   3464 	if (dp->rd_wsmode == WSDISPLAYIO_MODE_EMUL) {
   3465 		x = ri->ri_ccol * wi + ri->ri_xorigin;
   3466 		y = ri->ri_crow * he + ri->ri_yorigin;
   3467 		/* first turn off the old cursor */
   3468 		if (ri->ri_flg & RI_CURSOR) {
   3469 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   3470 			    RADEON_ROP3_Dn);
   3471 			ri->ri_flg &= ~RI_CURSOR;
   3472 		}
   3473 		ri->ri_crow = row;
   3474 		ri->ri_ccol = col;
   3475 		/* then (possibly) turn on the new one */
   3476 		if (on) {
   3477 			x = ri->ri_ccol * wi + ri->ri_xorigin;
   3478 			y = ri->ri_crow * he + ri->ri_yorigin;
   3479 			radeonfb_bitblt(dp, x, y, x, y, wi, he,
   3480 			    RADEON_ROP3_Dn);
   3481 			ri->ri_flg |= RI_CURSOR;
   3482 		}
   3483 	} else {
   3484 		scr->scr_ri.ri_crow = row;
   3485 		scr->scr_ri.ri_ccol = col;
   3486 		scr->scr_ri.ri_flg &= ~RI_CURSOR;
   3487 	}
   3488 }
   3489 
   3490 /*
   3491  * Underlying acceleration support.
   3492  */
   3493 
   3494 static void
   3495 radeonfb_rectfill(struct radeonfb_display *dp, int dstx, int dsty,
   3496     int width, int height, uint32_t color)
   3497 {
   3498 	struct radeonfb_softc	*sc = dp->rd_softc;
   3499 	uint32_t		gmc;
   3500 
   3501 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3502 
   3503 	radeonfb_wait_fifo(sc, 6);
   3504 
   3505 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3506 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3507 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3508 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3509 	    RADEON_ROP3_P | gmc);
   3510 
   3511 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, color);
   3512 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3513 	PUT32(sc, RADEON_DP_CNTL,
   3514 	    RADEON_DST_X_LEFT_TO_RIGHT |
   3515 	    RADEON_DST_Y_TOP_TO_BOTTOM);
   3516 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   3517 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   3518 }
   3519 
   3520 static void
   3521 radeonfb_rectfill_a(void *cookie, int dstx, int dsty,
   3522     int width, int height, long attr)
   3523 {
   3524 	struct radeonfb_display *dp = cookie;
   3525 
   3526 	radeonfb_rectfill(dp, dstx, dsty, width, height,
   3527 	    dp->rd_vscreen.scr_ri.ri_devcmap[(attr >> 24 & 0xf)]);
   3528 }
   3529 
   3530 static void
   3531 radeonfb_bitblt(void *cookie, int srcx, int srcy,
   3532     int dstx, int dsty, int width, int height, int rop)
   3533 {
   3534 	struct radeonfb_display *dp = cookie;
   3535 	struct radeonfb_softc	*sc = dp->rd_softc;
   3536 	uint32_t		gmc;
   3537 	uint32_t		dir;
   3538 
   3539 	if (dsty < srcy) {
   3540 		dir = RADEON_DST_Y_TOP_TO_BOTTOM;
   3541 	} else {
   3542 		srcy += height - 1;
   3543 		dsty += height - 1;
   3544 		dir = 0;
   3545 	}
   3546 	if (dstx < srcx) {
   3547 		dir |= RADEON_DST_X_LEFT_TO_RIGHT;
   3548 	} else {
   3549 		srcx += width - 1;
   3550 		dstx += width - 1;
   3551 	}
   3552 
   3553 	gmc = dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT;
   3554 
   3555 	radeonfb_wait_fifo(sc, 6);
   3556 
   3557 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3558 	    RADEON_GMC_BRUSH_NONE |
   3559 	    RADEON_GMC_SRC_DATATYPE_COLOR |
   3560 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3561 	    RADEON_DP_SRC_SOURCE_MEMORY |
   3562 	    rop | gmc);
   3563 
   3564 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3565 	PUT32(sc, RADEON_DP_CNTL, dir);
   3566 	PUT32(sc, RADEON_SRC_Y_X, (srcy << 16) | srcx);
   3567 	PUT32(sc, RADEON_DST_Y_X, (dsty << 16) | dstx);
   3568 	PUT32(sc, RADEON_DST_WIDTH_HEIGHT, (width << 16) | (height));
   3569 }
   3570 
   3571 static void
   3572 radeonfb_engine_idle(struct radeonfb_softc *sc)
   3573 {
   3574 
   3575 	radeonfb_wait_fifo(sc, 64);
   3576 	while ((GET32(sc, RADEON_RBBM_STATUS) &
   3577 			RADEON_RBBM_ACTIVE) != 0);
   3578 	radeonfb_engine_flush(sc);
   3579 }
   3580 
   3581 static inline void
   3582 radeonfb_wait_fifo(struct radeonfb_softc *sc, int n)
   3583 {
   3584 	int	i;
   3585 
   3586 	for (i = RADEON_TIMEOUT; i; i--) {
   3587 		if ((GET32(sc, RADEON_RBBM_STATUS) &
   3588 			RADEON_RBBM_FIFOCNT_MASK) >= n)
   3589 			return;
   3590 	}
   3591 #ifdef	RADEONFB_DEBUG
   3592 	if (!i)
   3593 		printf("%s: timed out waiting for fifo (%x)\n",
   3594 		    XNAME(sc), GET32(sc, RADEON_RBBM_STATUS));
   3595 #endif
   3596 }
   3597 
   3598 static void
   3599 radeonfb_engine_flush(struct radeonfb_softc *sc)
   3600 {
   3601 	int	i = 0;
   3602 
   3603 	if (IS_R300(sc) || IS_AVIVO(sc)) {
   3604 		SET32(sc, R300_DSTCACHE_CTLSTAT, R300_RB2D_DC_FLUSH_ALL);
   3605 		while (GET32(sc, R300_DSTCACHE_CTLSTAT) & R300_RB2D_DC_BUSY) {
   3606 			i++;
   3607 		}
   3608 	} else {
   3609 		SET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT,
   3610 		    RADEON_RB2D_DC_FLUSH_ALL);
   3611 		while (GET32(sc, RADEON_RB2D_DSTCACHE_CTLSTAT) &
   3612 			RADEON_RB2D_DC_BUSY) {
   3613 			i++;
   3614 		}
   3615 	}
   3616 #ifdef DIAGNOSTIC
   3617 	if (i > RADEON_TIMEOUT)
   3618 		printf("%s: engine flush timed out!\n", XNAME(sc));
   3619 #endif
   3620 }
   3621 
   3622 static inline void
   3623 radeonfb_unclip(struct radeonfb_softc *sc)
   3624 {
   3625 
   3626 	radeonfb_wait_fifo(sc, 2);
   3627 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   3628 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   3629 }
   3630 
   3631 static void
   3632 radeonfb_engine_init(struct radeonfb_display *dp)
   3633 {
   3634 	struct radeonfb_softc	*sc = dp->rd_softc;
   3635 	uint32_t		pitch;
   3636 
   3637 	/* no 3D */
   3638 	PUT32(sc, RADEON_RB3D_CNTL, 0);
   3639 
   3640 	if (IS_AVIVO(sc)) {
   3641 
   3642 #if 0
   3643 		/* XXX the xf86-video-radeon does this, causes lockups here */
   3644 		psel = GET32(sc, R400_GB_PIPE_SELECT);
   3645 		PRINTREG(R400_GB_PIPE_SELECT);
   3646 		DPRINTF(("PLL %08x %08x\n", GETPLL(sc, R500_DYN_SCLK_PWMEM_PIPE),
   3647 		    (1 | ((psel >> 8) & 0xf) << 4)));
   3648 		PUTPLL(sc, R500_DYN_SCLK_PWMEM_PIPE, (1 | ((psel >> 8) & 0xf) << 4));
   3649 #endif
   3650 		SET32(sc, RADEON_WAIT_UNTIL, RADEON_WAIT_2D_IDLECLEAN | RADEON_WAIT_3D_IDLECLEAN);
   3651 		SET32(sc, R300_DST_PIPE_CONFIG, R300_PIPE_AUTO_CONFIG);
   3652 		SET32(sc, R300_RB2D_DSTCACHE_MODE, R300_DC_AUTOFLUSH_ENABLE |
   3653 					     R300_DC_DC_DISABLE_IGNORE_PE);
   3654 	}
   3655 
   3656 	PRINTREG(RADEON_RB3D_CNTL);
   3657 	PRINTREG(RADEON_DP_GUI_MASTER_CNTL);
   3658 	PRINTREG(RADEON_RBBM_STATUS);
   3659 
   3660 	radeonfb_engine_reset(sc);
   3661 	PRINTREG(RADEON_RBBM_STATUS);
   3662 
   3663 	/*
   3664 	 * Apple OF hands us some radeons with tiling enabled - explicitly
   3665 	 * disable it here
   3666 	 */
   3667 	PUT32(sc, RADEON_SURFACE_CNTL, RADEON_SURF_TRANSLATION_DIS);
   3668 
   3669 	radeonfb_wait_fifo(sc, 1);
   3670 	if (!IS_R300(sc) && !IS_AVIVO(sc))
   3671 		PUT32(sc, RADEON_RB2D_DSTCACHE_MODE, 0);
   3672 
   3673 	radeonfb_wait_fifo(sc, 3);
   3674 
   3675 	/*
   3676 	 * XXX
   3677 	 * I strongly suspect this works mostly by accident on !AVIVO
   3678 	 * AVIVO uses all 22 bits for the framebuffer offset, so it can
   3679 	 * address up to 4GB. Older chips probably use bits 20-22 for other
   3680 	 * things and we just so happen to set the right ones by having our
   3681 	 * PCI/AGP space above 0x80000000.
   3682 	 * Either way, r5xx does not work if we set these bits, while older
   3683 	 * chips don't work without.
   3684 	 */
   3685 	pitch = (dp->rd_stride + 0x3f) >> 6;
   3686 	if (IS_AVIVO(sc)) {
   3687 		pitch = pitch << 22;
   3688 	} else
   3689 		pitch = (pitch << 22) | (sc->sc_aperbase >> 10);
   3690 
   3691 	PUT32(sc, RADEON_DEFAULT_PITCH_OFFSET, pitch);
   3692 	PUT32(sc, RADEON_DST_PITCH_OFFSET, pitch);
   3693 	PUT32(sc, RADEON_SRC_PITCH_OFFSET, pitch);
   3694 
   3695 	(void)GET32(sc, RADEON_DP_DATATYPE);
   3696 
   3697 	/* default scissors -- no clipping */
   3698 	radeonfb_wait_fifo(sc, 1);
   3699 	PUT32(sc, RADEON_DEFAULT_SC_BOTTOM_RIGHT,
   3700 	    RADEON_DEFAULT_SC_RIGHT_MAX | RADEON_DEFAULT_SC_BOTTOM_MAX);
   3701 
   3702 	radeonfb_wait_fifo(sc, 1);
   3703 	PUT32(sc, RADEON_DP_GUI_MASTER_CNTL,
   3704 	    (dp->rd_format << RADEON_GMC_DST_DATATYPE_SHIFT) |
   3705 	    RADEON_GMC_CLR_CMP_CNTL_DIS |
   3706 	    RADEON_GMC_BRUSH_SOLID_COLOR |
   3707 	    RADEON_GMC_SRC_DATATYPE_COLOR);
   3708 
   3709 	radeonfb_wait_fifo(sc, 10);
   3710 	PUT32(sc, RADEON_DST_LINE_START, 0);
   3711 	PUT32(sc, RADEON_DST_LINE_END, 0);
   3712 	PUT32(sc, RADEON_DP_BRUSH_FRGD_CLR, 0xffffffff);
   3713 	PUT32(sc, RADEON_DP_BRUSH_BKGD_CLR, 0);
   3714 	PUT32(sc, RADEON_DP_SRC_FRGD_CLR, 0xffffffff);
   3715 	PUT32(sc, RADEON_DP_SRC_BKGD_CLR, 0);
   3716 	PUT32(sc, RADEON_DP_WRITE_MASK, 0xffffffff);
   3717 	PUT32(sc, RADEON_SC_TOP_LEFT, 0);
   3718 	PUT32(sc, RADEON_SC_BOTTOM_RIGHT, 0x1fff1fff);
   3719 	PUT32(sc, RADEON_AUX_SC_CNTL, 0);
   3720 	radeonfb_engine_idle(sc);
   3721 }
   3722 
   3723 static void
   3724 radeonfb_engine_reset(struct radeonfb_softc *sc)
   3725 {
   3726 	uint32_t	hpc, rbbm, mclkcntl, clkindex;
   3727 
   3728 	radeonfb_engine_flush(sc);
   3729 
   3730 	clkindex = GET32(sc, RADEON_CLOCK_CNTL_INDEX);
   3731 	if (HAS_R300CG(sc))
   3732 		radeonfb_r300cg_workaround(sc);
   3733 	mclkcntl = GETPLL(sc, RADEON_MCLK_CNTL);
   3734 
   3735 	/*
   3736 	 * According to comments in XFree code, resetting the HDP via
   3737 	 * the RBBM_SOFT_RESET can cause bad behavior on some systems.
   3738 	 * So we use HOST_PATH_CNTL instead.
   3739 	 */
   3740 
   3741 	hpc = GET32(sc, RADEON_HOST_PATH_CNTL);
   3742 	rbbm = GET32(sc, RADEON_RBBM_SOFT_RESET);
   3743 	if (IS_R300(sc) || IS_AVIVO(sc)) {
   3744 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   3745 		    RADEON_SOFT_RESET_CP |
   3746 		    RADEON_SOFT_RESET_HI |
   3747 		    RADEON_SOFT_RESET_E2);
   3748 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3749 		PUT32(sc, RADEON_RBBM_SOFT_RESET, 0);
   3750 		/*
   3751 		 * XXX: this bit is not defined in any ATI docs I have,
   3752 		 * nor in the XFree code, but XFree does it.  Why?
   3753 		 */
   3754 		SET32(sc, RADEON_RB2D_DSTCACHE_MODE, R300_DC_DC_DISABLE_IGNORE_PE);
   3755 	} else {
   3756 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm |
   3757 		    RADEON_SOFT_RESET_CP |
   3758 		    RADEON_SOFT_RESET_SE |
   3759 		    RADEON_SOFT_RESET_RE |
   3760 		    RADEON_SOFT_RESET_PP |
   3761 		    RADEON_SOFT_RESET_E2 |
   3762 		    RADEON_SOFT_RESET_RB);
   3763 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3764 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm &
   3765 		    ~(RADEON_SOFT_RESET_CP |
   3766 			RADEON_SOFT_RESET_SE |
   3767 			RADEON_SOFT_RESET_RE |
   3768 			RADEON_SOFT_RESET_PP |
   3769 			RADEON_SOFT_RESET_E2 |
   3770 			RADEON_SOFT_RESET_RB));
   3771 		GET32(sc, RADEON_RBBM_SOFT_RESET);
   3772 	}
   3773 
   3774 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc | RADEON_HDP_SOFT_RESET);
   3775 	GET32(sc, RADEON_HOST_PATH_CNTL);
   3776 	PUT32(sc, RADEON_HOST_PATH_CNTL, hpc);
   3777 
   3778 	if (!IS_R300(sc) && !IS_AVIVO(sc))
   3779 		PUT32(sc, RADEON_RBBM_SOFT_RESET, rbbm);
   3780 
   3781 	PUT32(sc, RADEON_CLOCK_CNTL_INDEX, clkindex);
   3782 	PRINTREG(RADEON_CLOCK_CNTL_INDEX);
   3783 	PUTPLL(sc, RADEON_MCLK_CNTL, mclkcntl);
   3784 
   3785 	if (HAS_R300CG(sc))
   3786 		radeonfb_r300cg_workaround(sc);
   3787 }
   3788 
   3789 static int
   3790 radeonfb_set_curpos(struct radeonfb_display *dp, struct wsdisplay_curpos *pos)
   3791 {
   3792 	int		x, y;
   3793 
   3794 	x = pos->x;
   3795 	y = pos->y;
   3796 
   3797 	/*
   3798 	 * This doesn't let a cursor move off the screen.  I'm not
   3799 	 * sure if this will have negative effects for e.g. Xinerama.
   3800 	 * I'd guess Xinerama handles it by changing the cursor shape,
   3801 	 * but that needs verification.
   3802 	 */
   3803 	if (x >= dp->rd_virtx)
   3804 		x = dp->rd_virtx - 1;
   3805 	if (x < 0)
   3806 		x = 0;
   3807 	if (y >= dp->rd_virty)
   3808 		y = dp->rd_virty - 1;
   3809 	if (y < 0)
   3810 		y = 0;
   3811 
   3812 	dp->rd_cursor.rc_pos.x = x;
   3813 	dp->rd_cursor.rc_pos.y = y;
   3814 
   3815 	radeonfb_cursor_position(dp);
   3816 	return 0;
   3817 }
   3818 
   3819 static int
   3820 radeonfb_set_cursor(struct radeonfb_display *dp, struct wsdisplay_cursor *wc)
   3821 {
   3822 	unsigned	flags;
   3823 
   3824 	uint8_t		r[2], g[2], b[2];
   3825 	unsigned	index, count;
   3826 	int		i, err;
   3827 	int		pitch, size;
   3828 	struct radeonfb_cursor	*nc = &dp->rd_tempcursor;
   3829 
   3830 	flags = wc->which;
   3831 
   3832 	/* copy old values */
   3833 	memcpy(nc, &dp->rd_cursor, sizeof(struct radeonfb_cursor));
   3834 
   3835 	if (flags & WSDISPLAY_CURSOR_DOCMAP) {
   3836 		index = wc->cmap.index;
   3837 		count = wc->cmap.count;
   3838 
   3839 		if (index >= 2 || count > 2 - index)
   3840 			return EINVAL;
   3841 
   3842 		err = copyin(wc->cmap.red, &r[index], count);
   3843 		if (err)
   3844 			return err;
   3845 		err = copyin(wc->cmap.green, &g[index], count);
   3846 		if (err)
   3847 			return err;
   3848 		err = copyin(wc->cmap.blue, &b[index], count);
   3849 		if (err)
   3850 			return err;
   3851 
   3852 		for (i = index; i < index + count; i++) {
   3853 			nc->rc_cmap[i] =
   3854 			    (r[i] << 16) + (g[i] << 8) + (b[i] << 0);
   3855 		}
   3856 	}
   3857 
   3858 	if (flags & WSDISPLAY_CURSOR_DOSHAPE) {
   3859 		if ((wc->size.x > RADEON_CURSORMAXX) ||
   3860 		    (wc->size.y > RADEON_CURSORMAXY))
   3861 			return EINVAL;
   3862 
   3863 		/* figure bytes per line */
   3864 		pitch = (wc->size.x + 7) / 8;
   3865 		size = pitch * wc->size.y;
   3866 
   3867 		/* clear the old cursor and mask */
   3868 		memset(nc->rc_image, 0, 512);
   3869 		memset(nc->rc_mask, 0, 512);
   3870 
   3871 		nc->rc_size = wc->size;
   3872 
   3873 		if ((err = copyin(wc->image, nc->rc_image, size)) != 0)
   3874 			return err;
   3875 
   3876 		if ((err = copyin(wc->mask, nc->rc_mask, size)) != 0)
   3877 			return err;
   3878 	}
   3879 
   3880 	if (flags & WSDISPLAY_CURSOR_DOHOT) {
   3881 		nc->rc_hot = wc->hot;
   3882 		if (nc->rc_hot.x >= nc->rc_size.x)
   3883 			nc->rc_hot.x = nc->rc_size.x - 1;
   3884 		if (nc->rc_hot.y >= nc->rc_size.y)
   3885 			nc->rc_hot.y = nc->rc_size.y - 1;
   3886 	}
   3887 
   3888 	if (flags & WSDISPLAY_CURSOR_DOPOS) {
   3889 		nc->rc_pos = wc->pos;
   3890 		if (nc->rc_pos.x >= dp->rd_virtx)
   3891 			nc->rc_pos.x = dp->rd_virtx - 1;
   3892 #if 0
   3893 		if (nc->rc_pos.x < 0)
   3894 			nc->rc_pos.x = 0;
   3895 #endif
   3896 		if (nc->rc_pos.y >= dp->rd_virty)
   3897 			nc->rc_pos.y = dp->rd_virty - 1;
   3898 #if 0
   3899 		if (nc->rc_pos.y < 0)
   3900 			nc->rc_pos.y = 0;
   3901 #endif
   3902 	}
   3903 	if (flags & WSDISPLAY_CURSOR_DOCUR) {
   3904 		nc->rc_visible = wc->enable;
   3905 	}
   3906 
   3907 	memcpy(&dp->rd_cursor, nc, sizeof(struct radeonfb_cursor));
   3908 	radeonfb_cursor_update(dp, wc->which);
   3909 
   3910 	return 0;
   3911 }
   3912 
   3913 static uint8_t
   3914 radeonfb_backwards(uint8_t d)
   3915 {
   3916 	uint8_t l;
   3917 
   3918 	l = d << 7;
   3919 	l |= ((d & 0x02) << 5);
   3920 	l |= ((d & 0x04) << 3);
   3921 	l |= ((d & 0x08) << 1);
   3922 	l |= ((d & 0x10) >> 1);
   3923 	l |= ((d & 0x20) >> 3);
   3924 	l |= ((d & 0x40) >> 5);
   3925 	l |= ((d & 0x80) >> 7);
   3926 	return l;
   3927 }
   3928 
   3929 /*
   3930  * Change the cursor shape.  Call this with the cursor locked to avoid
   3931  * flickering/tearing.
   3932  */
   3933 static void
   3934 radeonfb_cursor_shape(struct radeonfb_display *dp)
   3935 {
   3936 	uint8_t	and[512], xor[512];
   3937 	int	i, j, src, dst /* , pitch */;
   3938 	const uint8_t	*msk = dp->rd_cursor.rc_mask;
   3939 	const uint8_t	*img = dp->rd_cursor.rc_image;
   3940 
   3941 	/*
   3942 	 * Radeon cursor data interleaves one line of AND data followed
   3943 	 * by a line of XOR data.  (Each line corresponds to a whole hardware
   3944 	 * pitch - i.e. 64 pixels or 8 bytes.)
   3945 	 *
   3946 	 * The cursor is displayed using the following table:
   3947 	 *
   3948 	 * AND	XOR	Result
   3949 	 * ----------------------
   3950 	 *  0    0	Cursor color 0
   3951 	 *  0	 1	Cursor color 1
   3952 	 *  1	 0	Transparent
   3953 	 *  1	 1	Complement of background
   3954 	 *
   3955 	 * Our masks are therefore different from what we were passed.
   3956 	 * Passed in, I'm assuming the data represents either color 0 or 1,
   3957 	 * and a mask, so the passed in table looks like:
   3958 	 *
   3959 	 * IMG	Mask	Result
   3960 	 * -----------------------
   3961 	 *  0	 0	Transparent
   3962 	 *  0	 1	Cursor color 0
   3963 	 *  1	 0	Transparent
   3964 	 *  1	 1	Cursor color 1
   3965 	 *
   3966 	 * IF mask bit == 1, AND = 0, XOR = color.
   3967 	 * IF mask bit == 0, AND = 1, XOR = 0.
   3968 	 *
   3969 	 * hence:	AND = ~(mask);	XOR = color & ~(mask);
   3970 	 */
   3971 
   3972 	/* pitch = ((dp->rd_cursor.rc_size.x + 7) / 8); */
   3973 
   3974 	/* start by assuming all bits are transparent */
   3975 	memset(and, 0xff, 512);
   3976 	memset(xor, 0x00, 512);
   3977 
   3978 	src = 0;
   3979 	dst = 0;
   3980 	for (i = 0; i < 64; i++) {
   3981 		for (j = 0; j < 64; j += 8) {
   3982 			if ((i < dp->rd_cursor.rc_size.y) &&
   3983 			    (j < dp->rd_cursor.rc_size.x)) {
   3984 
   3985 				/* take care to leave odd bits alone */
   3986 				and[dst] &= ~(msk[src]);
   3987 				xor[dst] = img[src] & msk[src];
   3988 				src++;
   3989 			}
   3990 			dst++;
   3991 		}
   3992 	}
   3993 
   3994 	for (i = 0; i < 512; i++) {
   3995 		and[i] = radeonfb_backwards(and[i]);
   3996 		xor[i] = radeonfb_backwards(xor[i]);
   3997 	}
   3998 
   3999 	/* copy the image into place */
   4000 	for (i = 0; i < 64; i++) {
   4001 		memcpy((uint8_t *)dp->rd_curptr + (i * 16),
   4002 		    &and[i * 8], 8);
   4003 		memcpy((uint8_t *)dp->rd_curptr + (i * 16) + 8,
   4004 		    &xor[i * 8], 8);
   4005 	}
   4006 }
   4007 
   4008 /*
   4009  * We use the cursor in 24bit mode on avivo, much simpler than the above.
   4010  * Should probably do the same on older radeons
   4011  */
   4012 static void
   4013 radeonfb_avivo_cursor_shape(struct radeonfb_display *dp)
   4014 {
   4015 	const uint8_t	*msk = dp->rd_cursor.rc_mask;
   4016 	const uint8_t	*img = dp->rd_cursor.rc_image;
   4017 	uint32_t 	*out = (uint32_t *)dp->rd_curptr;
   4018 	uint8_t		bit;
   4019 	int 		i, j, px;
   4020 
   4021 	for (i = 0; i < 64 * 8; i++) {
   4022 		bit = 0x01;
   4023 		for (j = 0; j < 8; j++) {
   4024 			px = ((*msk & bit) ? 2 : 0) | ((*img & bit) ? 1 : 0);
   4025 			switch (px) {
   4026 				case 0:
   4027 				case 1:
   4028 					*out = htole32(0x00000000);
   4029 					break;
   4030 				case 2:
   4031 					*out = htole32(0xff000000 |
   4032 						  dp->rd_cursor.rc_cmap[0]);
   4033 					break;
   4034 				case 3:
   4035 					*out = htole32(0xff000000 |
   4036 						  dp->rd_cursor.rc_cmap[1]);
   4037 					break;
   4038 			}
   4039 			out++;
   4040 			bit = bit << 1;
   4041 		}
   4042 		msk++;
   4043 		img++;
   4044 	}
   4045 }
   4046 
   4047 static void
   4048 radeonfb_cursor_position(struct radeonfb_display *dp)
   4049 {
   4050 	struct radeonfb_softc	*sc = dp->rd_softc;
   4051 	uint32_t		offset, hvoff, hvpos;	/* registers */
   4052 	uint32_t		coff;			/* cursor offset */
   4053 	int			i, x, y, xoff, yoff, crtcoff, lock;
   4054 
   4055 	/*
   4056 	 * XXX: this also needs to handle pan/scan
   4057 	 */
   4058 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   4059 
   4060 		struct radeonfb_crtc	*rcp = &dp->rd_crtcs[i];
   4061 
   4062 		SET32(sc, AVIVO_D1CUR_UPDATE, AVIVO_D1CURSOR_UPDATE_LOCK);
   4063 		PUT32(sc, AVIVO_D1CUR_SIZE, 0x003f003f);
   4064 		if (IS_AVIVO(sc)) {
   4065 			if (rcp->rc_number) {
   4066 				offset = AVIVO_D2CUR_SURFACE_ADDRESS;
   4067 				hvoff = AVIVO_D2CUR_HOT_SPOT;
   4068 				hvpos = AVIVO_D2CUR_POSITION;
   4069 				crtcoff = 0/*RADEON_CRTC_OFFSET*/;
   4070 			} else {
   4071 				offset = AVIVO_D1CUR_SURFACE_ADDRESS;
   4072 				hvoff = AVIVO_D1CUR_HOT_SPOT;
   4073 				hvpos = AVIVO_D1CUR_POSITION;
   4074 				crtcoff = 0/*RADEON_CRTC_OFFSET*/;
   4075 			}
   4076 			lock = 0;
   4077 		} else {
   4078 			if (rcp->rc_number) {
   4079 				offset = RADEON_CUR2_OFFSET;
   4080 				hvoff = RADEON_CUR2_HORZ_VERT_OFF;
   4081 				hvpos = RADEON_CUR2_HORZ_VERT_POSN;
   4082 				crtcoff = RADEON_CRTC2_OFFSET;
   4083 			} else {
   4084 				offset = RADEON_CUR_OFFSET;
   4085 				hvoff = RADEON_CUR_HORZ_VERT_OFF;
   4086 				hvpos = RADEON_CUR_HORZ_VERT_POSN;
   4087 				crtcoff = RADEON_CRTC_OFFSET;
   4088 			}
   4089 			lock = RADEON_CUR_LOCK;
   4090 		}
   4091 
   4092 		x = dp->rd_cursor.rc_pos.x;
   4093 		y = dp->rd_cursor.rc_pos.y;
   4094 
   4095 		while (y < rcp->rc_yoffset) {
   4096 			rcp->rc_yoffset -= RADEON_PANINCREMENT;
   4097 		}
   4098 		while (y >= (rcp->rc_yoffset + rcp->rc_videomode.vdisplay)) {
   4099 			rcp->rc_yoffset += RADEON_PANINCREMENT;
   4100 		}
   4101 		while (x < rcp->rc_xoffset) {
   4102 			rcp->rc_xoffset -= RADEON_PANINCREMENT;
   4103 		}
   4104 		while (x >= (rcp->rc_xoffset + rcp->rc_videomode.hdisplay)) {
   4105 			rcp->rc_xoffset += RADEON_PANINCREMENT;
   4106 		}
   4107 
   4108 		/* adjust for the cursor's hotspot */
   4109 		x -= dp->rd_cursor.rc_hot.x;
   4110 		y -= dp->rd_cursor.rc_hot.y;
   4111 		xoff = yoff = 0;
   4112 
   4113 		if (x >= dp->rd_virtx)
   4114 			x = dp->rd_virtx - 1;
   4115 		if (y >= dp->rd_virty)
   4116 			y = dp->rd_virty - 1;
   4117 
   4118 		/* now adjust cursor so it is relative to viewport */
   4119 		x -= rcp->rc_xoffset;
   4120 		y -= rcp->rc_yoffset;
   4121 
   4122 		/*
   4123 		 * no need to check for fall off, because we should
   4124 		 * never move off the screen entirely!
   4125 		 */
   4126 		coff = 0;
   4127 		if (x < 0) {
   4128 			xoff = -x;
   4129 			x = 0;
   4130 		}
   4131 		if (y < 0) {
   4132 			yoff = -y;
   4133 			y = 0;
   4134 			coff = (yoff * 2) * 8;
   4135 		}
   4136 
   4137 		/* pan the display */
   4138 		if (crtcoff != 0)
   4139 			PUT32(sc, crtcoff, (rcp->rc_yoffset * dp->rd_stride) +
   4140 			    rcp->rc_xoffset);
   4141 
   4142 		PUT32(sc, offset, (dp->rd_curoff + coff) | lock);
   4143 		PUT32(sc, hvoff, (xoff << 16) | (yoff) | lock);
   4144 		/* NB: this unlocks the cursor */
   4145 		PUT32(sc, hvpos, (x << 16) | y);
   4146 		if (IS_AVIVO(sc))
   4147 			CLR32(sc, AVIVO_D1CUR_UPDATE, AVIVO_D1CURSOR_UPDATE_LOCK);
   4148 	}
   4149 }
   4150 
   4151 static void
   4152 radeonfb_cursor_visible(struct radeonfb_display *dp)
   4153 {
   4154 	struct radeonfb_softc	*sc = dp->rd_softc;
   4155 	int		i;
   4156 	uint32_t	gencntl, bit;
   4157 
   4158 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   4159 		if (IS_AVIVO(sc)) {
   4160 			SET32(sc, AVIVO_D1CUR_UPDATE, AVIVO_D1CURSOR_UPDATE_LOCK);
   4161 			if (dp->rd_crtcs[i].rc_number) {
   4162 				gencntl = AVIVO_D2CUR_CONTROL;
   4163 				bit = AVIVO_D1CURSOR_EN | (2 << 8);
   4164 			} else {
   4165 				gencntl = AVIVO_D1CUR_CONTROL;
   4166 				bit = AVIVO_D1CURSOR_EN | (2 << 8);
   4167 			}
   4168 		} else {
   4169 			if (dp->rd_crtcs[i].rc_number) {
   4170 				gencntl = RADEON_CRTC2_GEN_CNTL;
   4171 				bit = RADEON_CRTC2_CUR_EN;
   4172 			} else {
   4173 				gencntl = RADEON_CRTC_GEN_CNTL;
   4174 				bit = RADEON_CRTC_CUR_EN;
   4175 			}
   4176 		}
   4177 		if (dp->rd_cursor.rc_visible)
   4178 			SET32(dp->rd_softc, gencntl, bit);
   4179 		else
   4180 			CLR32(dp->rd_softc, gencntl, bit);
   4181 		if (IS_AVIVO(sc))
   4182 			CLR32(sc, AVIVO_D1CUR_UPDATE, AVIVO_D1CURSOR_UPDATE_LOCK);
   4183 
   4184 	}
   4185 }
   4186 
   4187 static void
   4188 radeonfb_cursor_cmap(struct radeonfb_display *dp)
   4189 {
   4190 	int		i;
   4191 	uint32_t	c0reg, c1reg;
   4192 	struct radeonfb_softc	*sc = dp->rd_softc;
   4193 
   4194 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   4195 		if (dp->rd_crtcs[i].rc_number) {
   4196 			c0reg = RADEON_CUR2_CLR0;
   4197 			c1reg = RADEON_CUR2_CLR1;
   4198 		} else {
   4199 			c0reg = RADEON_CUR_CLR0;
   4200 			c1reg = RADEON_CUR_CLR1;
   4201 		}
   4202 
   4203 		PUT32(sc, c0reg, dp->rd_cursor.rc_cmap[0]);
   4204 		PUT32(sc, c1reg, dp->rd_cursor.rc_cmap[1]);
   4205 	}
   4206 }
   4207 
   4208 static void
   4209 radeonfb_cursor_update(struct radeonfb_display *dp, unsigned which)
   4210 {
   4211 	struct radeonfb_softc	*sc;
   4212 	int		i;
   4213 
   4214 	sc = dp->rd_softc;
   4215 
   4216 	for (i = 0; i < dp->rd_ncrtcs; i++) {
   4217 		if (dp->rd_crtcs[i].rc_number) {
   4218 			if (IS_AVIVO(sc)) {
   4219 				SET32(sc, AVIVO_D2CUR_UPDATE, AVIVO_D1CURSOR_UPDATE_LOCK);
   4220 			} else
   4221 				SET32(sc, RADEON_CUR2_OFFSET, RADEON_CUR_LOCK);
   4222 		} else {
   4223 			if (IS_AVIVO(sc)) {
   4224 				SET32(sc, AVIVO_D1CUR_UPDATE, AVIVO_D1CURSOR_UPDATE_LOCK);
   4225 			} else
   4226 				SET32(sc, RADEON_CUR_OFFSET,RADEON_CUR_LOCK);
   4227 		}
   4228 	}
   4229 
   4230 	if (which & WSDISPLAY_CURSOR_DOCMAP) {
   4231 		if (IS_AVIVO(sc)) {
   4232 			/*
   4233 			 * we use an ARGB cursor here, so we need to rebuild
   4234 			 * the cursor image every time the palette changes
   4235 			 */
   4236 			radeonfb_avivo_cursor_shape(dp);
   4237 		} else
   4238 			radeonfb_cursor_cmap(dp);
   4239 	}
   4240 
   4241 	if (which & WSDISPLAY_CURSOR_DOSHAPE) {
   4242 		if (IS_AVIVO(sc)) {
   4243 			radeonfb_avivo_cursor_shape(dp);
   4244 		} else
   4245 			radeonfb_cursor_shape(dp);
   4246 	}
   4247 
   4248 	if (which & WSDISPLAY_CURSOR_DOCUR)
   4249 		radeonfb_cursor_visible(dp);
   4250 
   4251 	/* this one is unconditional, because it updates other stuff */
   4252 	radeonfb_cursor_position(dp);
   4253 }
   4254 
   4255 static struct videomode *
   4256 radeonfb_best_refresh(struct videomode *m1, struct videomode *m2)
   4257 {
   4258 	int	r1, r2;
   4259 
   4260 	/* otherwise pick the higher refresh rate */
   4261 	r1 = DIVIDE(DIVIDE(m1->dot_clock, m1->htotal), m1->vtotal);
   4262 	r2 = DIVIDE(DIVIDE(m2->dot_clock, m2->htotal), m2->vtotal);
   4263 
   4264 	return (r1 < r2 ? m2 : m1);
   4265 }
   4266 
   4267 static const struct videomode *
   4268 radeonfb_port_mode(struct radeonfb_softc *sc, struct radeonfb_port *rp,
   4269     int x, int y)
   4270 {
   4271 	struct edid_info	*ep = &rp->rp_edid;
   4272 	struct videomode	*vmp = NULL;
   4273 	int			i;
   4274 
   4275 	if (!rp->rp_edid_valid) {
   4276 		/* fallback to safe mode */
   4277 		return radeonfb_modelookup(sc->sc_defaultmode);
   4278 	}
   4279 
   4280 	/* always choose the preferred mode first! */
   4281 	if (ep->edid_preferred_mode) {
   4282 
   4283 		/* XXX: add auto-stretching support for native mode */
   4284 
   4285 		/* this may want panning to occur, btw */
   4286 		if ((ep->edid_preferred_mode->hdisplay <= x) &&
   4287 		    (ep->edid_preferred_mode->vdisplay <= y))
   4288 			return ep->edid_preferred_mode;
   4289 	}
   4290 
   4291 	for (i = 0; i < ep->edid_nmodes; i++) {
   4292 		/*
   4293 		 * We elect to pick a resolution that is too large for
   4294 		 * the monitor than one that is too small.  This means
   4295 		 * that we will prefer to pan rather than to try to
   4296 		 * center a smaller display on a larger screen.  In
   4297 		 * practice, this shouldn't matter because if a
   4298 		 * monitor can support a larger resolution, it can
   4299 		 * probably also support the smaller.  A specific
   4300 		 * exception is fixed format panels, but hopefully
   4301 		 * they are properly dealt with by the "autostretch"
   4302 		 * logic above.
   4303 		 */
   4304 		if ((ep->edid_modes[i].hdisplay > x) ||
   4305 		    (ep->edid_modes[i].vdisplay > y)) {
   4306 			continue;
   4307 		}
   4308 
   4309 		/*
   4310 		 * at this point, the display mode is no larger than
   4311 		 * what we've requested.
   4312 		 */
   4313 		if (vmp == NULL)
   4314 			vmp = &ep->edid_modes[i];
   4315 
   4316 		/* eliminate smaller modes */
   4317 		if ((vmp->hdisplay >= ep->edid_modes[i].hdisplay) ||
   4318 		    (vmp->vdisplay >= ep->edid_modes[i].vdisplay))
   4319 			continue;
   4320 
   4321 		if ((vmp->hdisplay < ep->edid_modes[i].hdisplay) ||
   4322 		    (vmp->vdisplay < ep->edid_modes[i].vdisplay)) {
   4323 			vmp = &ep->edid_modes[i];
   4324 			continue;
   4325 		}
   4326 
   4327 		KASSERT(vmp->hdisplay == ep->edid_modes[i].hdisplay);
   4328 		KASSERT(vmp->vdisplay == ep->edid_modes[i].vdisplay);
   4329 
   4330 		vmp = radeonfb_best_refresh(vmp, &ep->edid_modes[i]);
   4331 	}
   4332 
   4333 	return (vmp ? vmp : radeonfb_modelookup(sc->sc_defaultmode));
   4334 }
   4335 
   4336 static int
   4337 radeonfb_hasres(struct videomode *list, int nlist, int x, int y)
   4338 {
   4339 	int	i;
   4340 
   4341 	for (i = 0; i < nlist; i++) {
   4342 		if ((x == list[i].hdisplay) &&
   4343 		    (y == list[i].vdisplay)) {
   4344 			return 1;
   4345 		}
   4346 	}
   4347 	return 0;
   4348 }
   4349 
   4350 static void
   4351 radeonfb_pickres(struct radeonfb_display *dp, uint16_t *x, uint16_t *y,
   4352     int pan)
   4353 {
   4354 	struct radeonfb_port	*rp;
   4355 	struct edid_info	*ep;
   4356 	int			i, j;
   4357 
   4358 	*x = 0;
   4359 	*y = 0;
   4360 
   4361 	if (pan) {
   4362 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   4363 			rp = dp->rd_crtcs[i].rc_port;
   4364 			ep = &rp->rp_edid;
   4365 			if (!rp->rp_edid_valid) {
   4366 				/* monitor not present */
   4367 				continue;
   4368 			}
   4369 
   4370 			/*
   4371 			 * For now we are ignoring "conflict" that
   4372 			 * could occur when mixing some modes like
   4373 			 * 1280x1024 and 1400x800.  It isn't clear
   4374 			 * which is better, so the first one wins.
   4375 			 */
   4376 			for (j = 0; j < ep->edid_nmodes; j++) {
   4377 				/*
   4378 				 * ignore resolutions that are too big for
   4379 				 * the radeon
   4380 				 */
   4381 				if (ep->edid_modes[j].hdisplay >
   4382 				    dp->rd_softc->sc_maxx)
   4383 					continue;
   4384 				if (ep->edid_modes[j].vdisplay >
   4385 				    dp->rd_softc->sc_maxy)
   4386 					continue;
   4387 
   4388 				/*
   4389 				 * pick largest resolution, the
   4390 				 * smaller monitor will pan
   4391 				 */
   4392 				if ((ep->edid_modes[j].hdisplay >= *x) &&
   4393 				    (ep->edid_modes[j].vdisplay >= *y)) {
   4394 					*x = ep->edid_modes[j].hdisplay;
   4395 					*y = ep->edid_modes[j].vdisplay;
   4396 				}
   4397 			}
   4398 		}
   4399 
   4400 	} else {
   4401 		struct videomode	*modes;
   4402 		size_t			smodes;
   4403 		int			nmodes = 0;
   4404 		int			valid = 0;
   4405 
   4406 		smodes = sizeof(struct videomode) * 64;
   4407 		modes = kmem_alloc(smodes, KM_SLEEP);
   4408 
   4409 		for (i = 0; i < dp->rd_ncrtcs; i++) {
   4410 			/*
   4411 			 * pick the largest resolution in common.
   4412 			 */
   4413 			rp = dp->rd_crtcs[i].rc_port;
   4414 			ep = &rp->rp_edid;
   4415 
   4416 			if (!rp->rp_edid_valid)
   4417 				continue;
   4418 
   4419 			if (!valid) {
   4420 				/*
   4421 				 * Pick the preferred mode for this port
   4422 				 * if available.
   4423 				 */
   4424 				if (ep->edid_preferred_mode) {
   4425 					struct videomode *vmp =
   4426 						ep->edid_preferred_mode;
   4427 
   4428 					if ((vmp->hdisplay <=
   4429 					     dp->rd_softc->sc_maxx) &&
   4430 					    (vmp->vdisplay <=
   4431 					     dp->rd_softc->sc_maxy))
   4432 						modes[nmodes++] = *vmp;
   4433 				} else {
   4434 
   4435 					/* initialize starting list */
   4436 					for (j = 0; j < ep->edid_nmodes; j++) {
   4437 						/*
   4438 						 * ignore resolutions that are
   4439 						 * too big for the radeon
   4440 						 */
   4441 						if (ep->edid_modes[j].hdisplay >
   4442 						    dp->rd_softc->sc_maxx)
   4443 							continue;
   4444 						if (ep->edid_modes[j].vdisplay >
   4445 						    dp->rd_softc->sc_maxy)
   4446 							continue;
   4447 
   4448 						modes[nmodes] =
   4449 							ep->edid_modes[j];
   4450 						nmodes++;
   4451 					}
   4452 				}
   4453 				valid = 1;
   4454 			} else {
   4455 				/* merge into preexisting list */
   4456 				for (j = 0; j < nmodes; j++) {
   4457 					if (!radeonfb_hasres(ep->edid_modes,
   4458 						ep->edid_nmodes,
   4459 						modes[j].hdisplay,
   4460 						modes[j].vdisplay)) {
   4461 						modes[j] = modes[nmodes];
   4462 						j--;
   4463 						nmodes--;
   4464 					}
   4465 				}
   4466 			}
   4467 		}
   4468 
   4469 		/* now we have to pick from the merged list */
   4470 		for (i = 0; i < nmodes; i++) {
   4471 			if ((modes[i].hdisplay >= *x) &&
   4472 			    (modes[i].vdisplay >= *y)) {
   4473 				*x = modes[i].hdisplay;
   4474 				*y = modes[i].vdisplay;
   4475 			}
   4476 		}
   4477 		kmem_free(modes, smodes);
   4478 
   4479 	}
   4480 
   4481 	if ((*x == 0) || (*y == 0)) {
   4482 		/* fallback to safe mode */
   4483 		*x = 640;
   4484 		*y = 480;
   4485 	}
   4486 }
   4487 
   4488 /*
   4489  * backlight levels are linear on:
   4490  * - RV200, RV250, RV280, RV350
   4491  * - but NOT on PowerBook4,3 6,3 6,5
   4492  * according to Linux' radeonfb
   4493  */
   4494 
   4495 /* Get the current backlight level for the display.  */
   4496 
   4497 static int
   4498 radeonfb_get_backlight(struct radeonfb_display *dp)
   4499 {
   4500 	int s;
   4501 	uint32_t level;
   4502 
   4503 	s = spltty();
   4504 
   4505 	level = radeonfb_get32(dp->rd_softc, RADEON_LVDS_GEN_CNTL);
   4506 	level &= RADEON_LVDS_BL_MOD_LEV_MASK;
   4507 	level >>= RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4508 
   4509 	/*
   4510 	 * On some chips, we should negate the backlight level.
   4511 	 * XXX Find out on which chips.
   4512 	 */
   4513 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT)
   4514 	level = RADEONFB_BACKLIGHT_MAX - level;
   4515 
   4516 	splx(s);
   4517 
   4518 	return level;
   4519 }
   4520 
   4521 /* Set the backlight to the given level for the display.  */
   4522 static void
   4523 radeonfb_switch_backlight(struct radeonfb_display *dp, int on)
   4524 {
   4525 	if (dp->rd_bl_on == on)
   4526 		return;
   4527 	dp->rd_bl_on = on;
   4528 	radeonfb_set_backlight(dp, dp->rd_bl_level);
   4529 }
   4530 
   4531 static int
   4532 radeonfb_set_backlight(struct radeonfb_display *dp, int level)
   4533 {
   4534 	struct radeonfb_softc *sc = dp->rd_softc;
   4535 	int rlevel, s;
   4536 	uint32_t lvds;
   4537 
   4538 	if(!sc->sc_mapped)
   4539 		return 0;
   4540 
   4541 	s = spltty();
   4542 
   4543 	dp->rd_bl_level = level;
   4544 	if (dp->rd_bl_on == 0)
   4545 		level = 0;
   4546 
   4547 	if (level < 0)
   4548 		level = 0;
   4549 	else if (level >= RADEONFB_BACKLIGHT_MAX)
   4550 		level = RADEONFB_BACKLIGHT_MAX;
   4551 
   4552 	/* On some chips, we should negate the backlight level. */
   4553 	if (dp->rd_softc->sc_flags & RFB_INV_BLIGHT) {
   4554 		rlevel = RADEONFB_BACKLIGHT_MAX - level;
   4555 	} else
   4556 	rlevel = level;
   4557 
   4558 	callout_stop(&dp->rd_bl_lvds_co);
   4559 	//radeonfb_engine_idle(sc);
   4560 
   4561 	/*
   4562 	 * Turn off the display if the backlight is set to 0, since the
   4563 	 * display is useless without backlight anyway.
   4564 	 */
   4565 	if (level == 0)
   4566 		radeonfb_blank(dp, 1);
   4567 	else if (radeonfb_get_backlight(dp) == 0)
   4568 		radeonfb_blank(dp, 0);
   4569 
   4570 	lvds = radeonfb_get32(sc, RADEON_LVDS_GEN_CNTL);
   4571 	lvds &= ~RADEON_LVDS_DISPLAY_DIS;
   4572 	if (!(lvds & RADEON_LVDS_BLON) || !(lvds & RADEON_LVDS_ON)) {
   4573 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_DIGON;
   4574 		lvds |= RADEON_LVDS_BLON | RADEON_LVDS_EN;
   4575 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   4576 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   4577 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4578 		lvds |= RADEON_LVDS_ON;
   4579 		lvds |= dp->rd_bl_lvds_val & RADEON_LVDS_BL_MOD_EN;
   4580 	} else {
   4581 		lvds &= ~RADEON_LVDS_BL_MOD_LEV_MASK;
   4582 		lvds |= rlevel << RADEON_LVDS_BL_MOD_LEV_SHIFT;
   4583 		radeonfb_put32(sc, RADEON_LVDS_GEN_CNTL, lvds);
   4584 	}
   4585 
   4586 	dp->rd_bl_lvds_val &= ~RADEON_LVDS_STATE_MASK;
   4587 	dp->rd_bl_lvds_val |= lvds & RADEON_LVDS_STATE_MASK;
   4588 	/* XXX What is the correct delay? */
   4589 	callout_schedule(&dp->rd_bl_lvds_co, 200 * hz);
   4590 
   4591 	splx(s);
   4592 
   4593 	return 0;
   4594 }
   4595 
   4596 /*
   4597  * Callout function for delayed operations on the LVDS_GEN_CNTL register.
   4598  * Set the delayed bits in the register, and clear the stored delayed
   4599  * value.
   4600  */
   4601 
   4602 static void radeonfb_lvds_callout(void *arg)
   4603 {
   4604 	struct radeonfb_display *dp = arg;
   4605 	int s;
   4606 
   4607 	s = splhigh();
   4608 
   4609 	radeonfb_mask32(dp->rd_softc, RADEON_LVDS_GEN_CNTL, ~0,
   4610 			dp->rd_bl_lvds_val);
   4611 	dp->rd_bl_lvds_val = 0;
   4612 
   4613 	splx(s);
   4614 }
   4615 
   4616 static void
   4617 radeonfb_brightness_up(device_t dev)
   4618 {
   4619 	struct radeonfb_softc *sc = device_private(dev);
   4620 	struct radeonfb_display *dp = &sc->sc_displays[0];
   4621 	int level;
   4622 
   4623 	/* we assume the main display is the first one - need a better way */
   4624 	if (sc->sc_ndisplays < 1) return;
   4625 	/* make sure pushing the hotkeys always has an effect */
   4626 	dp->rd_bl_on = 1;
   4627 	level = dp->rd_bl_level;
   4628 	level = uimin(RADEONFB_BACKLIGHT_MAX, level + 5);
   4629 	radeonfb_set_backlight(dp, level);
   4630 }
   4631 
   4632 static void
   4633 radeonfb_brightness_down(device_t dev)
   4634 {
   4635 	struct radeonfb_softc *sc = device_private(dev);
   4636 	struct radeonfb_display *dp = &sc->sc_displays[0];
   4637 	int level;
   4638 
   4639 	/* we assume the main display is the first one - need a better way */
   4640 	if (sc->sc_ndisplays < 1) return;
   4641 	/* make sure pushing the hotkeys always has an effect */
   4642 	dp->rd_bl_on = 1;
   4643 	level = dp->rd_bl_level;
   4644 	level = uimax(0, level - 5);
   4645 	radeonfb_set_backlight(dp, level);
   4646 }
   4647