xref: /linux/drivers/video/fbdev/riva/riva_hw.c (revision c0c914eca7f251c70facc37dfebeaf176601918d)
1  /***************************************************************************\
2 |*                                                                           *|
3 |*       Copyright 1993-1999 NVIDIA, Corporation.  All rights reserved.      *|
4 |*                                                                           *|
5 |*     NOTICE TO USER:   The source code  is copyrighted under  U.S. and     *|
6 |*     international laws.  Users and possessors of this source code are     *|
7 |*     hereby granted a nonexclusive,  royalty-free copyright license to     *|
8 |*     use this code in individual and commercial software.                  *|
9 |*                                                                           *|
10 |*     Any use of this source code must include,  in the user documenta-     *|
11 |*     tion and  internal comments to the code,  notices to the end user     *|
12 |*     as follows:                                                           *|
13 |*                                                                           *|
14 |*       Copyright 1993-1999 NVIDIA, Corporation.  All rights reserved.      *|
15 |*                                                                           *|
16 |*     NVIDIA, CORPORATION MAKES NO REPRESENTATION ABOUT THE SUITABILITY     *|
17 |*     OF  THIS SOURCE  CODE  FOR ANY PURPOSE.  IT IS  PROVIDED  "AS IS"     *|
18 |*     WITHOUT EXPRESS OR IMPLIED WARRANTY OF ANY KIND.  NVIDIA, CORPOR-     *|
19 |*     ATION DISCLAIMS ALL WARRANTIES  WITH REGARD  TO THIS SOURCE CODE,     *|
20 |*     INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGE-     *|
21 |*     MENT,  AND FITNESS  FOR A PARTICULAR PURPOSE.   IN NO EVENT SHALL     *|
22 |*     NVIDIA, CORPORATION  BE LIABLE FOR ANY SPECIAL,  INDIRECT,  INCI-     *|
23 |*     DENTAL, OR CONSEQUENTIAL DAMAGES,  OR ANY DAMAGES  WHATSOEVER RE-     *|
24 |*     SULTING FROM LOSS OF USE,  DATA OR PROFITS,  WHETHER IN AN ACTION     *|
25 |*     OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,  ARISING OUT OF     *|
26 |*     OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOURCE CODE.     *|
27 |*                                                                           *|
28 |*     U.S. Government  End  Users.   This source code  is a "commercial     *|
29 |*     item,"  as that  term is  defined at  48 C.F.R. 2.101 (OCT 1995),     *|
30 |*     consisting  of "commercial  computer  software"  and  "commercial     *|
31 |*     computer  software  documentation,"  as such  terms  are  used in     *|
32 |*     48 C.F.R. 12.212 (SEPT 1995)  and is provided to the U.S. Govern-     *|
33 |*     ment only as  a commercial end item.   Consistent with  48 C.F.R.     *|
34 |*     12.212 and  48 C.F.R. 227.7202-1 through  227.7202-4 (JUNE 1995),     *|
35 |*     all U.S. Government End Users  acquire the source code  with only     *|
36 |*     those rights set forth herein.                                        *|
37 |*                                                                           *|
38  \***************************************************************************/
39 
40 /*
41  * GPL licensing note -- nVidia is allowing a liberal interpretation of
42  * the documentation restriction above, to merely say that this nVidia's
43  * copyright and disclaimer should be included with all code derived
44  * from this source.  -- Jeff Garzik <jgarzik@pobox.com>, 01/Nov/99
45  */
46 
47 /* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/nv/riva_hw.c,v 1.33 2002/08/05 20:47:06 mvojkovi Exp $ */
48 
49 #include <linux/kernel.h>
50 #include <linux/pci.h>
51 #include <linux/pci_ids.h>
52 #include "riva_hw.h"
53 #include "riva_tbl.h"
54 #include "nv_type.h"
55 
56 /*
57  * This file is an OS-agnostic file used to make RIVA 128 and RIVA TNT
58  * operate identically (except TNT has more memory and better 3D quality.
59  */
60 static int nv3Busy
61 (
62     RIVA_HW_INST *chip
63 )
64 {
65     return ((NV_RD32(&chip->Rop->FifoFree, 0) < chip->FifoEmptyCount) ||
66 	    NV_RD32(&chip->PGRAPH[0x000006B0/4], 0) & 0x01);
67 }
68 static int nv4Busy
69 (
70     RIVA_HW_INST *chip
71 )
72 {
73     return ((NV_RD32(&chip->Rop->FifoFree, 0) < chip->FifoEmptyCount) ||
74 	    NV_RD32(&chip->PGRAPH[0x00000700/4], 0) & 0x01);
75 }
76 static int nv10Busy
77 (
78     RIVA_HW_INST *chip
79 )
80 {
81     return ((NV_RD32(&chip->Rop->FifoFree, 0) < chip->FifoEmptyCount) ||
82 	    NV_RD32(&chip->PGRAPH[0x00000700/4], 0) & 0x01);
83 }
84 
85 static void vgaLockUnlock
86 (
87     RIVA_HW_INST *chip,
88     int           Lock
89 )
90 {
91     U008 cr11;
92     VGA_WR08(chip->PCIO, 0x3D4, 0x11);
93     cr11 = VGA_RD08(chip->PCIO, 0x3D5);
94     if(Lock) cr11 |= 0x80;
95     else cr11 &= ~0x80;
96     VGA_WR08(chip->PCIO, 0x3D5, cr11);
97 }
98 static void nv3LockUnlock
99 (
100     RIVA_HW_INST *chip,
101     int           Lock
102 )
103 {
104     VGA_WR08(chip->PVIO, 0x3C4, 0x06);
105     VGA_WR08(chip->PVIO, 0x3C5, Lock ? 0x99 : 0x57);
106     vgaLockUnlock(chip, Lock);
107 }
108 static void nv4LockUnlock
109 (
110     RIVA_HW_INST *chip,
111     int           Lock
112 )
113 {
114     VGA_WR08(chip->PCIO, 0x3D4, 0x1F);
115     VGA_WR08(chip->PCIO, 0x3D5, Lock ? 0x99 : 0x57);
116     vgaLockUnlock(chip, Lock);
117 }
118 
119 static int ShowHideCursor
120 (
121     RIVA_HW_INST *chip,
122     int           ShowHide
123 )
124 {
125     int cursor;
126     cursor                      =  chip->CurrentState->cursor1;
127     chip->CurrentState->cursor1 = (chip->CurrentState->cursor1 & 0xFE) |
128                                   (ShowHide & 0x01);
129     VGA_WR08(chip->PCIO, 0x3D4, 0x31);
130     VGA_WR08(chip->PCIO, 0x3D5, chip->CurrentState->cursor1);
131     return (cursor & 0x01);
132 }
133 
134 /****************************************************************************\
135 *                                                                            *
136 * The video arbitration routines calculate some "magic" numbers.  Fixes      *
137 * the snow seen when accessing the framebuffer without it.                   *
138 * It just works (I hope).                                                    *
139 *                                                                            *
140 \****************************************************************************/
141 
142 #define DEFAULT_GR_LWM 100
143 #define DEFAULT_VID_LWM 100
144 #define DEFAULT_GR_BURST_SIZE 256
145 #define DEFAULT_VID_BURST_SIZE 128
146 #define VIDEO		0
147 #define GRAPHICS	1
148 #define MPORT		2
149 #define ENGINE		3
150 #define GFIFO_SIZE	320
151 #define GFIFO_SIZE_128	256
152 #define MFIFO_SIZE	120
153 #define VFIFO_SIZE	256
154 
155 typedef struct {
156   int gdrain_rate;
157   int vdrain_rate;
158   int mdrain_rate;
159   int gburst_size;
160   int vburst_size;
161   char vid_en;
162   char gr_en;
163   int wcmocc, wcgocc, wcvocc, wcvlwm, wcglwm;
164   int by_gfacc;
165   char vid_only_once;
166   char gr_only_once;
167   char first_vacc;
168   char first_gacc;
169   char first_macc;
170   int vocc;
171   int gocc;
172   int mocc;
173   char cur;
174   char engine_en;
175   char converged;
176   int priority;
177 } nv3_arb_info;
178 typedef struct {
179   int graphics_lwm;
180   int video_lwm;
181   int graphics_burst_size;
182   int video_burst_size;
183   int graphics_hi_priority;
184   int media_hi_priority;
185   int rtl_values;
186   int valid;
187 } nv3_fifo_info;
188 typedef struct {
189   char pix_bpp;
190   char enable_video;
191   char gr_during_vid;
192   char enable_mp;
193   int memory_width;
194   int video_scale;
195   int pclk_khz;
196   int mclk_khz;
197   int mem_page_miss;
198   int mem_latency;
199   char mem_aligned;
200 } nv3_sim_state;
201 typedef struct {
202   int graphics_lwm;
203   int video_lwm;
204   int graphics_burst_size;
205   int video_burst_size;
206   int valid;
207 } nv4_fifo_info;
208 typedef struct {
209   int pclk_khz;
210   int mclk_khz;
211   int nvclk_khz;
212   char mem_page_miss;
213   char mem_latency;
214   int memory_width;
215   char enable_video;
216   char gr_during_vid;
217   char pix_bpp;
218   char mem_aligned;
219   char enable_mp;
220 } nv4_sim_state;
221 typedef struct {
222   int graphics_lwm;
223   int video_lwm;
224   int graphics_burst_size;
225   int video_burst_size;
226   int valid;
227 } nv10_fifo_info;
228 typedef struct {
229   int pclk_khz;
230   int mclk_khz;
231   int nvclk_khz;
232   char mem_page_miss;
233   char mem_latency;
234   u32 memory_type;
235   int memory_width;
236   char enable_video;
237   char gr_during_vid;
238   char pix_bpp;
239   char mem_aligned;
240   char enable_mp;
241 } nv10_sim_state;
242 static int nv3_iterate(nv3_fifo_info *res_info, nv3_sim_state * state, nv3_arb_info *ainfo)
243 {
244     int iter = 0;
245     int tmp;
246     int vfsize, mfsize, gfsize;
247     int mburst_size = 32;
248     int mmisses, gmisses, vmisses;
249     int misses;
250     int vlwm, glwm, mlwm;
251     int last, next, cur;
252     int max_gfsize ;
253     long ns;
254 
255     vlwm = 0;
256     glwm = 0;
257     mlwm = 0;
258     vfsize = 0;
259     gfsize = 0;
260     cur = ainfo->cur;
261     mmisses = 2;
262     gmisses = 2;
263     vmisses = 2;
264     if (ainfo->gburst_size == 128) max_gfsize = GFIFO_SIZE_128;
265     else  max_gfsize = GFIFO_SIZE;
266     max_gfsize = GFIFO_SIZE;
267     while (1)
268     {
269         if (ainfo->vid_en)
270         {
271             if (ainfo->wcvocc > ainfo->vocc) ainfo->wcvocc = ainfo->vocc;
272             if (ainfo->wcvlwm > vlwm) ainfo->wcvlwm = vlwm ;
273             ns = 1000000 * ainfo->vburst_size/(state->memory_width/8)/state->mclk_khz;
274             vfsize = ns * ainfo->vdrain_rate / 1000000;
275             vfsize =  ainfo->wcvlwm - ainfo->vburst_size + vfsize;
276         }
277         if (state->enable_mp)
278         {
279             if (ainfo->wcmocc > ainfo->mocc) ainfo->wcmocc = ainfo->mocc;
280         }
281         if (ainfo->gr_en)
282         {
283             if (ainfo->wcglwm > glwm) ainfo->wcglwm = glwm ;
284             if (ainfo->wcgocc > ainfo->gocc) ainfo->wcgocc = ainfo->gocc;
285             ns = 1000000 * (ainfo->gburst_size/(state->memory_width/8))/state->mclk_khz;
286             gfsize = (ns * (long) ainfo->gdrain_rate)/1000000;
287             gfsize = ainfo->wcglwm - ainfo->gburst_size + gfsize;
288         }
289         mfsize = 0;
290         if (!state->gr_during_vid && ainfo->vid_en)
291             if (ainfo->vid_en && (ainfo->vocc < 0) && !ainfo->vid_only_once)
292                 next = VIDEO;
293             else if (ainfo->mocc < 0)
294                 next = MPORT;
295             else if (ainfo->gocc< ainfo->by_gfacc)
296                 next = GRAPHICS;
297             else return (0);
298         else switch (ainfo->priority)
299             {
300                 case VIDEO:
301                     if (ainfo->vid_en && ainfo->vocc<0 && !ainfo->vid_only_once)
302                         next = VIDEO;
303                     else if (ainfo->gr_en && ainfo->gocc<0 && !ainfo->gr_only_once)
304                         next = GRAPHICS;
305                     else if (ainfo->mocc<0)
306                         next = MPORT;
307                     else    return (0);
308                     break;
309                 case GRAPHICS:
310                     if (ainfo->gr_en && ainfo->gocc<0 && !ainfo->gr_only_once)
311                         next = GRAPHICS;
312                     else if (ainfo->vid_en && ainfo->vocc<0 && !ainfo->vid_only_once)
313                         next = VIDEO;
314                     else if (ainfo->mocc<0)
315                         next = MPORT;
316                     else    return (0);
317                     break;
318                 default:
319                     if (ainfo->mocc<0)
320                         next = MPORT;
321                     else if (ainfo->gr_en && ainfo->gocc<0 && !ainfo->gr_only_once)
322                         next = GRAPHICS;
323                     else if (ainfo->vid_en && ainfo->vocc<0 && !ainfo->vid_only_once)
324                         next = VIDEO;
325                     else    return (0);
326                     break;
327             }
328         last = cur;
329         cur = next;
330         iter++;
331         switch (cur)
332         {
333             case VIDEO:
334                 if (last==cur)    misses = 0;
335                 else if (ainfo->first_vacc)   misses = vmisses;
336                 else    misses = 1;
337                 ainfo->first_vacc = 0;
338                 if (last!=cur)
339                 {
340                     ns =  1000000 * (vmisses*state->mem_page_miss + state->mem_latency)/state->mclk_khz;
341                     vlwm = ns * ainfo->vdrain_rate/ 1000000;
342                     vlwm = ainfo->vocc - vlwm;
343                 }
344                 ns = 1000000*(misses*state->mem_page_miss + ainfo->vburst_size)/(state->memory_width/8)/state->mclk_khz;
345                 ainfo->vocc = ainfo->vocc + ainfo->vburst_size - ns*ainfo->vdrain_rate/1000000;
346                 ainfo->gocc = ainfo->gocc - ns*ainfo->gdrain_rate/1000000;
347                 ainfo->mocc = ainfo->mocc - ns*ainfo->mdrain_rate/1000000;
348                 break;
349             case GRAPHICS:
350                 if (last==cur)    misses = 0;
351                 else if (ainfo->first_gacc)   misses = gmisses;
352                 else    misses = 1;
353                 ainfo->first_gacc = 0;
354                 if (last!=cur)
355                 {
356                     ns = 1000000*(gmisses*state->mem_page_miss + state->mem_latency)/state->mclk_khz ;
357                     glwm = ns * ainfo->gdrain_rate/1000000;
358                     glwm = ainfo->gocc - glwm;
359                 }
360                 ns = 1000000*(misses*state->mem_page_miss + ainfo->gburst_size/(state->memory_width/8))/state->mclk_khz;
361                 ainfo->vocc = ainfo->vocc + 0 - ns*ainfo->vdrain_rate/1000000;
362                 ainfo->gocc = ainfo->gocc + ainfo->gburst_size - ns*ainfo->gdrain_rate/1000000;
363                 ainfo->mocc = ainfo->mocc + 0 - ns*ainfo->mdrain_rate/1000000;
364                 break;
365             default:
366                 if (last==cur)    misses = 0;
367                 else if (ainfo->first_macc)   misses = mmisses;
368                 else    misses = 1;
369                 ainfo->first_macc = 0;
370                 ns = 1000000*(misses*state->mem_page_miss + mburst_size/(state->memory_width/8))/state->mclk_khz;
371                 ainfo->vocc = ainfo->vocc + 0 - ns*ainfo->vdrain_rate/1000000;
372                 ainfo->gocc = ainfo->gocc + 0 - ns*ainfo->gdrain_rate/1000000;
373                 ainfo->mocc = ainfo->mocc + mburst_size - ns*ainfo->mdrain_rate/1000000;
374                 break;
375         }
376         if (iter>100)
377         {
378             ainfo->converged = 0;
379             return (1);
380         }
381         ns = 1000000*ainfo->gburst_size/(state->memory_width/8)/state->mclk_khz;
382         tmp = ns * ainfo->gdrain_rate/1000000;
383         if (abs(ainfo->gburst_size) + ((abs(ainfo->wcglwm) + 16 ) & ~0x7) - tmp > max_gfsize)
384         {
385             ainfo->converged = 0;
386             return (1);
387         }
388         ns = 1000000*ainfo->vburst_size/(state->memory_width/8)/state->mclk_khz;
389         tmp = ns * ainfo->vdrain_rate/1000000;
390         if (abs(ainfo->vburst_size) + (abs(ainfo->wcvlwm + 32) & ~0xf)  - tmp> VFIFO_SIZE)
391         {
392             ainfo->converged = 0;
393             return (1);
394         }
395         if (abs(ainfo->gocc) > max_gfsize)
396         {
397             ainfo->converged = 0;
398             return (1);
399         }
400         if (abs(ainfo->vocc) > VFIFO_SIZE)
401         {
402             ainfo->converged = 0;
403             return (1);
404         }
405         if (abs(ainfo->mocc) > MFIFO_SIZE)
406         {
407             ainfo->converged = 0;
408             return (1);
409         }
410         if (abs(vfsize) > VFIFO_SIZE)
411         {
412             ainfo->converged = 0;
413             return (1);
414         }
415         if (abs(gfsize) > max_gfsize)
416         {
417             ainfo->converged = 0;
418             return (1);
419         }
420         if (abs(mfsize) > MFIFO_SIZE)
421         {
422             ainfo->converged = 0;
423             return (1);
424         }
425     }
426 }
427 static char nv3_arb(nv3_fifo_info * res_info, nv3_sim_state * state,  nv3_arb_info *ainfo)
428 {
429     long ens, vns, mns, gns;
430     int mmisses, gmisses, vmisses, eburst_size, mburst_size;
431     int refresh_cycle;
432 
433     refresh_cycle = 2*(state->mclk_khz/state->pclk_khz) + 5;
434     mmisses = 2;
435     if (state->mem_aligned) gmisses = 2;
436     else    gmisses = 3;
437     vmisses = 2;
438     eburst_size = state->memory_width * 1;
439     mburst_size = 32;
440     gns = 1000000 * (gmisses*state->mem_page_miss + state->mem_latency)/state->mclk_khz;
441     ainfo->by_gfacc = gns*ainfo->gdrain_rate/1000000;
442     ainfo->wcmocc = 0;
443     ainfo->wcgocc = 0;
444     ainfo->wcvocc = 0;
445     ainfo->wcvlwm = 0;
446     ainfo->wcglwm = 0;
447     ainfo->engine_en = 1;
448     ainfo->converged = 1;
449     if (ainfo->engine_en)
450     {
451         ens =  1000000*(state->mem_page_miss + eburst_size/(state->memory_width/8) +refresh_cycle)/state->mclk_khz;
452         ainfo->mocc = state->enable_mp ? 0-ens*ainfo->mdrain_rate/1000000 : 0;
453         ainfo->vocc = ainfo->vid_en ? 0-ens*ainfo->vdrain_rate/1000000 : 0;
454         ainfo->gocc = ainfo->gr_en ? 0-ens*ainfo->gdrain_rate/1000000 : 0;
455         ainfo->cur = ENGINE;
456         ainfo->first_vacc = 1;
457         ainfo->first_gacc = 1;
458         ainfo->first_macc = 1;
459         nv3_iterate(res_info, state,ainfo);
460     }
461     if (state->enable_mp)
462     {
463         mns = 1000000 * (mmisses*state->mem_page_miss + mburst_size/(state->memory_width/8) + refresh_cycle)/state->mclk_khz;
464         ainfo->mocc = state->enable_mp ? 0 : mburst_size - mns*ainfo->mdrain_rate/1000000;
465         ainfo->vocc = ainfo->vid_en ? 0 : 0- mns*ainfo->vdrain_rate/1000000;
466         ainfo->gocc = ainfo->gr_en ? 0: 0- mns*ainfo->gdrain_rate/1000000;
467         ainfo->cur = MPORT;
468         ainfo->first_vacc = 1;
469         ainfo->first_gacc = 1;
470         ainfo->first_macc = 0;
471         nv3_iterate(res_info, state,ainfo);
472     }
473     if (ainfo->gr_en)
474     {
475         ainfo->first_vacc = 1;
476         ainfo->first_gacc = 0;
477         ainfo->first_macc = 1;
478         gns = 1000000*(gmisses*state->mem_page_miss + ainfo->gburst_size/(state->memory_width/8) + refresh_cycle)/state->mclk_khz;
479         ainfo->gocc = ainfo->gburst_size - gns*ainfo->gdrain_rate/1000000;
480         ainfo->vocc = ainfo->vid_en? 0-gns*ainfo->vdrain_rate/1000000 : 0;
481         ainfo->mocc = state->enable_mp ?  0-gns*ainfo->mdrain_rate/1000000: 0;
482         ainfo->cur = GRAPHICS;
483         nv3_iterate(res_info, state,ainfo);
484     }
485     if (ainfo->vid_en)
486     {
487         ainfo->first_vacc = 0;
488         ainfo->first_gacc = 1;
489         ainfo->first_macc = 1;
490         vns = 1000000*(vmisses*state->mem_page_miss + ainfo->vburst_size/(state->memory_width/8) + refresh_cycle)/state->mclk_khz;
491         ainfo->vocc = ainfo->vburst_size - vns*ainfo->vdrain_rate/1000000;
492         ainfo->gocc = ainfo->gr_en? (0-vns*ainfo->gdrain_rate/1000000) : 0;
493         ainfo->mocc = state->enable_mp? 0-vns*ainfo->mdrain_rate/1000000 :0 ;
494         ainfo->cur = VIDEO;
495         nv3_iterate(res_info, state, ainfo);
496     }
497     if (ainfo->converged)
498     {
499         res_info->graphics_lwm = (int)abs(ainfo->wcglwm) + 16;
500         res_info->video_lwm = (int)abs(ainfo->wcvlwm) + 32;
501         res_info->graphics_burst_size = ainfo->gburst_size;
502         res_info->video_burst_size = ainfo->vburst_size;
503         res_info->graphics_hi_priority = (ainfo->priority == GRAPHICS);
504         res_info->media_hi_priority = (ainfo->priority == MPORT);
505         if (res_info->video_lwm > 160)
506         {
507             res_info->graphics_lwm = 256;
508             res_info->video_lwm = 128;
509             res_info->graphics_burst_size = 64;
510             res_info->video_burst_size = 64;
511             res_info->graphics_hi_priority = 0;
512             res_info->media_hi_priority = 0;
513             ainfo->converged = 0;
514             return (0);
515         }
516         if (res_info->video_lwm > 128)
517         {
518             res_info->video_lwm = 128;
519         }
520         return (1);
521     }
522     else
523     {
524         res_info->graphics_lwm = 256;
525         res_info->video_lwm = 128;
526         res_info->graphics_burst_size = 64;
527         res_info->video_burst_size = 64;
528         res_info->graphics_hi_priority = 0;
529         res_info->media_hi_priority = 0;
530         return (0);
531     }
532 }
533 static char nv3_get_param(nv3_fifo_info *res_info, nv3_sim_state * state, nv3_arb_info *ainfo)
534 {
535     int done, g,v, p;
536 
537     done = 0;
538     for (p=0; p < 2; p++)
539     {
540         for (g=128 ; g > 32; g= g>> 1)
541         {
542             for (v=128; v >=32; v = v>> 1)
543             {
544                 ainfo->priority = p;
545                 ainfo->gburst_size = g;
546                 ainfo->vburst_size = v;
547                 done = nv3_arb(res_info, state,ainfo);
548                 if (done && (g==128))
549                     if ((res_info->graphics_lwm + g) > 256)
550                         done = 0;
551                 if (done)
552                     goto Done;
553             }
554         }
555     }
556 
557  Done:
558     return done;
559 }
560 static void nv3CalcArbitration
561 (
562     nv3_fifo_info * res_info,
563     nv3_sim_state * state
564 )
565 {
566     nv3_fifo_info save_info;
567     nv3_arb_info ainfo;
568     char   res_gr, res_vid;
569 
570     ainfo.gr_en = 1;
571     ainfo.vid_en = state->enable_video;
572     ainfo.vid_only_once = 0;
573     ainfo.gr_only_once = 0;
574     ainfo.gdrain_rate = (int) state->pclk_khz * (state->pix_bpp/8);
575     ainfo.vdrain_rate = (int) state->pclk_khz * 2;
576     if (state->video_scale != 0)
577         ainfo.vdrain_rate = ainfo.vdrain_rate/state->video_scale;
578     ainfo.mdrain_rate = 33000;
579     res_info->rtl_values = 0;
580     if (!state->gr_during_vid && state->enable_video)
581     {
582         ainfo.gr_only_once = 1;
583         ainfo.gr_en = 1;
584         ainfo.gdrain_rate = 0;
585         res_vid = nv3_get_param(res_info, state,  &ainfo);
586         res_vid = ainfo.converged;
587         save_info.video_lwm = res_info->video_lwm;
588         save_info.video_burst_size = res_info->video_burst_size;
589         ainfo.vid_en = 1;
590         ainfo.vid_only_once = 1;
591         ainfo.gr_en = 1;
592         ainfo.gdrain_rate = (int) state->pclk_khz * (state->pix_bpp/8);
593         ainfo.vdrain_rate = 0;
594         res_gr = nv3_get_param(res_info, state,  &ainfo);
595         res_gr = ainfo.converged;
596         res_info->video_lwm = save_info.video_lwm;
597         res_info->video_burst_size = save_info.video_burst_size;
598         res_info->valid = res_gr & res_vid;
599     }
600     else
601     {
602         if (!ainfo.gr_en) ainfo.gdrain_rate = 0;
603         if (!ainfo.vid_en) ainfo.vdrain_rate = 0;
604         res_gr = nv3_get_param(res_info, state,  &ainfo);
605         res_info->valid = ainfo.converged;
606     }
607 }
608 static void nv3UpdateArbitrationSettings
609 (
610     unsigned      VClk,
611     unsigned      pixelDepth,
612     unsigned     *burst,
613     unsigned     *lwm,
614     RIVA_HW_INST *chip
615 )
616 {
617     nv3_fifo_info fifo_data;
618     nv3_sim_state sim_data;
619     unsigned int M, N, P, pll, MClk;
620 
621     pll = NV_RD32(&chip->PRAMDAC0[0x00000504/4], 0);
622     M = (pll >> 0) & 0xFF; N = (pll >> 8) & 0xFF; P = (pll >> 16) & 0x0F;
623     MClk = (N * chip->CrystalFreqKHz / M) >> P;
624     sim_data.pix_bpp        = (char)pixelDepth;
625     sim_data.enable_video   = 0;
626     sim_data.enable_mp      = 0;
627     sim_data.video_scale    = 1;
628     sim_data.memory_width   = (NV_RD32(&chip->PEXTDEV[0x00000000/4], 0) & 0x10) ?
629 	128 : 64;
630     sim_data.memory_width   = 128;
631 
632     sim_data.mem_latency    = 9;
633     sim_data.mem_aligned    = 1;
634     sim_data.mem_page_miss  = 11;
635     sim_data.gr_during_vid  = 0;
636     sim_data.pclk_khz       = VClk;
637     sim_data.mclk_khz       = MClk;
638     nv3CalcArbitration(&fifo_data, &sim_data);
639     if (fifo_data.valid)
640     {
641         int  b = fifo_data.graphics_burst_size >> 4;
642         *burst = 0;
643         while (b >>= 1)
644 	    (*burst)++;
645         *lwm   = fifo_data.graphics_lwm >> 3;
646     }
647     else
648     {
649         *lwm   = 0x24;
650         *burst = 0x2;
651     }
652 }
653 static void nv4CalcArbitration
654 (
655     nv4_fifo_info *fifo,
656     nv4_sim_state *arb
657 )
658 {
659     int data, pagemiss, cas,width, video_enable, color_key_enable, bpp, align;
660     int nvclks, mclks, pclks, vpagemiss, crtpagemiss, vbs;
661     int found, mclk_extra, mclk_loop, cbs, m1, p1;
662     int mclk_freq, pclk_freq, nvclk_freq, mp_enable;
663     int us_m, us_n, us_p, video_drain_rate, crtc_drain_rate;
664     int vpm_us, us_video, vlwm, video_fill_us, cpm_us, us_crt,clwm;
665     int craw, vraw;
666 
667     fifo->valid = 1;
668     pclk_freq = arb->pclk_khz;
669     mclk_freq = arb->mclk_khz;
670     nvclk_freq = arb->nvclk_khz;
671     pagemiss = arb->mem_page_miss;
672     cas = arb->mem_latency;
673     width = arb->memory_width >> 6;
674     video_enable = arb->enable_video;
675     color_key_enable = arb->gr_during_vid;
676     bpp = arb->pix_bpp;
677     align = arb->mem_aligned;
678     mp_enable = arb->enable_mp;
679     clwm = 0;
680     vlwm = 0;
681     cbs = 128;
682     pclks = 2;
683     nvclks = 2;
684     nvclks += 2;
685     nvclks += 1;
686     mclks = 5;
687     mclks += 3;
688     mclks += 1;
689     mclks += cas;
690     mclks += 1;
691     mclks += 1;
692     mclks += 1;
693     mclks += 1;
694     mclk_extra = 3;
695     nvclks += 2;
696     nvclks += 1;
697     nvclks += 1;
698     nvclks += 1;
699     if (mp_enable)
700         mclks+=4;
701     nvclks += 0;
702     pclks += 0;
703     found = 0;
704     vbs = 0;
705     while (found != 1)
706     {
707         fifo->valid = 1;
708         found = 1;
709         mclk_loop = mclks+mclk_extra;
710         us_m = mclk_loop *1000*1000 / mclk_freq;
711         us_n = nvclks*1000*1000 / nvclk_freq;
712         us_p = nvclks*1000*1000 / pclk_freq;
713         if (video_enable)
714         {
715             video_drain_rate = pclk_freq * 2;
716             crtc_drain_rate = pclk_freq * bpp/8;
717             vpagemiss = 2;
718             vpagemiss += 1;
719             crtpagemiss = 2;
720             vpm_us = (vpagemiss * pagemiss)*1000*1000/mclk_freq;
721             if (nvclk_freq * 2 > mclk_freq * width)
722                 video_fill_us = cbs*1000*1000 / 16 / nvclk_freq ;
723             else
724                 video_fill_us = cbs*1000*1000 / (8 * width) / mclk_freq;
725             us_video = vpm_us + us_m + us_n + us_p + video_fill_us;
726             vlwm = us_video * video_drain_rate/(1000*1000);
727             vlwm++;
728             vbs = 128;
729             if (vlwm > 128) vbs = 64;
730             if (vlwm > (256-64)) vbs = 32;
731             if (nvclk_freq * 2 > mclk_freq * width)
732                 video_fill_us = vbs *1000*1000/ 16 / nvclk_freq ;
733             else
734                 video_fill_us = vbs*1000*1000 / (8 * width) / mclk_freq;
735             cpm_us = crtpagemiss  * pagemiss *1000*1000/ mclk_freq;
736             us_crt =
737             us_video
738             +video_fill_us
739             +cpm_us
740             +us_m + us_n +us_p
741             ;
742             clwm = us_crt * crtc_drain_rate/(1000*1000);
743             clwm++;
744         }
745         else
746         {
747             crtc_drain_rate = pclk_freq * bpp/8;
748             crtpagemiss = 2;
749             crtpagemiss += 1;
750             cpm_us = crtpagemiss  * pagemiss *1000*1000/ mclk_freq;
751             us_crt =  cpm_us + us_m + us_n + us_p ;
752             clwm = us_crt * crtc_drain_rate/(1000*1000);
753             clwm++;
754         }
755         m1 = clwm + cbs - 512;
756         p1 = m1 * pclk_freq / mclk_freq;
757         p1 = p1 * bpp / 8;
758         if ((p1 < m1) && (m1 > 0))
759         {
760             fifo->valid = 0;
761             found = 0;
762             if (mclk_extra ==0)   found = 1;
763             mclk_extra--;
764         }
765         else if (video_enable)
766         {
767             if ((clwm > 511) || (vlwm > 255))
768             {
769                 fifo->valid = 0;
770                 found = 0;
771                 if (mclk_extra ==0)   found = 1;
772                 mclk_extra--;
773             }
774         }
775         else
776         {
777             if (clwm > 519)
778             {
779                 fifo->valid = 0;
780                 found = 0;
781                 if (mclk_extra ==0)   found = 1;
782                 mclk_extra--;
783             }
784         }
785         craw = clwm;
786         vraw = vlwm;
787         if (clwm < 384) clwm = 384;
788         if (vlwm < 128) vlwm = 128;
789         data = (int)(clwm);
790         fifo->graphics_lwm = data;
791         fifo->graphics_burst_size = 128;
792         data = (int)((vlwm+15));
793         fifo->video_lwm = data;
794         fifo->video_burst_size = vbs;
795     }
796 }
797 static void nv4UpdateArbitrationSettings
798 (
799     unsigned      VClk,
800     unsigned      pixelDepth,
801     unsigned     *burst,
802     unsigned     *lwm,
803     RIVA_HW_INST *chip
804 )
805 {
806     nv4_fifo_info fifo_data;
807     nv4_sim_state sim_data;
808     unsigned int M, N, P, pll, MClk, NVClk, cfg1;
809 
810     pll = NV_RD32(&chip->PRAMDAC0[0x00000504/4], 0);
811     M = (pll >> 0)  & 0xFF; N = (pll >> 8)  & 0xFF; P = (pll >> 16) & 0x0F;
812     MClk  = (N * chip->CrystalFreqKHz / M) >> P;
813     pll = NV_RD32(&chip->PRAMDAC0[0x00000500/4], 0);
814     M = (pll >> 0)  & 0xFF; N = (pll >> 8)  & 0xFF; P = (pll >> 16) & 0x0F;
815     NVClk  = (N * chip->CrystalFreqKHz / M) >> P;
816     cfg1 = NV_RD32(&chip->PFB[0x00000204/4], 0);
817     sim_data.pix_bpp        = (char)pixelDepth;
818     sim_data.enable_video   = 0;
819     sim_data.enable_mp      = 0;
820     sim_data.memory_width   = (NV_RD32(&chip->PEXTDEV[0x00000000/4], 0) & 0x10) ?
821 	128 : 64;
822     sim_data.mem_latency    = (char)cfg1 & 0x0F;
823     sim_data.mem_aligned    = 1;
824     sim_data.mem_page_miss  = (char)(((cfg1 >> 4) &0x0F) + ((cfg1 >> 31) & 0x01));
825     sim_data.gr_during_vid  = 0;
826     sim_data.pclk_khz       = VClk;
827     sim_data.mclk_khz       = MClk;
828     sim_data.nvclk_khz      = NVClk;
829     nv4CalcArbitration(&fifo_data, &sim_data);
830     if (fifo_data.valid)
831     {
832         int  b = fifo_data.graphics_burst_size >> 4;
833         *burst = 0;
834         while (b >>= 1)
835 	    (*burst)++;
836         *lwm   = fifo_data.graphics_lwm >> 3;
837     }
838 }
839 static void nv10CalcArbitration
840 (
841     nv10_fifo_info *fifo,
842     nv10_sim_state *arb
843 )
844 {
845     int data, pagemiss, cas,width, video_enable, color_key_enable, bpp, align;
846     int nvclks, mclks, pclks, vpagemiss, crtpagemiss, vbs;
847     int nvclk_fill, us_extra;
848     int found, mclk_extra, mclk_loop, cbs, m1;
849     int mclk_freq, pclk_freq, nvclk_freq, mp_enable;
850     int us_m, us_m_min, us_n, us_p, video_drain_rate, crtc_drain_rate;
851     int vus_m, vus_n, vus_p;
852     int vpm_us, us_video, vlwm, cpm_us, us_crt,clwm;
853     int clwm_rnd_down;
854     int craw, m2us, us_pipe, us_pipe_min, vus_pipe, p1clk, p2;
855     int pclks_2_top_fifo, min_mclk_extra;
856     int us_min_mclk_extra;
857 
858     fifo->valid = 1;
859     pclk_freq = arb->pclk_khz; /* freq in KHz */
860     mclk_freq = arb->mclk_khz;
861     nvclk_freq = arb->nvclk_khz;
862     pagemiss = arb->mem_page_miss;
863     cas = arb->mem_latency;
864     width = arb->memory_width/64;
865     video_enable = arb->enable_video;
866     color_key_enable = arb->gr_during_vid;
867     bpp = arb->pix_bpp;
868     align = arb->mem_aligned;
869     mp_enable = arb->enable_mp;
870     clwm = 0;
871     vlwm = 1024;
872 
873     cbs = 512;
874     vbs = 512;
875 
876     pclks = 4; /* lwm detect. */
877 
878     nvclks = 3; /* lwm -> sync. */
879     nvclks += 2; /* fbi bus cycles (1 req + 1 busy) */
880 
881     mclks  = 1;   /* 2 edge sync.  may be very close to edge so just put one. */
882 
883     mclks += 1;   /* arb_hp_req */
884     mclks += 5;   /* ap_hp_req   tiling pipeline */
885 
886     mclks += 2;    /* tc_req     latency fifo */
887     mclks += 2;    /* fb_cas_n_  memory request to fbio block */
888     mclks += 7;    /* sm_d_rdv   data returned from fbio block */
889 
890     /* fb.rd.d.Put_gc   need to accumulate 256 bits for read */
891     if (arb->memory_type == 0)
892       if (arb->memory_width == 64) /* 64 bit bus */
893         mclks += 4;
894       else
895         mclks += 2;
896     else
897       if (arb->memory_width == 64) /* 64 bit bus */
898         mclks += 2;
899       else
900         mclks += 1;
901 
902     if ((!video_enable) && (arb->memory_width == 128))
903     {
904       mclk_extra = (bpp == 32) ? 31 : 42; /* Margin of error */
905       min_mclk_extra = 17;
906     }
907     else
908     {
909       mclk_extra = (bpp == 32) ? 8 : 4; /* Margin of error */
910       /* mclk_extra = 4; */ /* Margin of error */
911       min_mclk_extra = 18;
912     }
913 
914     nvclks += 1; /* 2 edge sync.  may be very close to edge so just put one. */
915     nvclks += 1; /* fbi_d_rdv_n */
916     nvclks += 1; /* Fbi_d_rdata */
917     nvclks += 1; /* crtfifo load */
918 
919     if(mp_enable)
920       mclks+=4; /* Mp can get in with a burst of 8. */
921     /* Extra clocks determined by heuristics */
922 
923     nvclks += 0;
924     pclks += 0;
925     found = 0;
926     while(found != 1) {
927       fifo->valid = 1;
928       found = 1;
929       mclk_loop = mclks+mclk_extra;
930       us_m = mclk_loop *1000*1000 / mclk_freq; /* Mclk latency in us */
931       us_m_min = mclks * 1000*1000 / mclk_freq; /* Minimum Mclk latency in us */
932       us_min_mclk_extra = min_mclk_extra *1000*1000 / mclk_freq;
933       us_n = nvclks*1000*1000 / nvclk_freq;/* nvclk latency in us */
934       us_p = pclks*1000*1000 / pclk_freq;/* nvclk latency in us */
935       us_pipe = us_m + us_n + us_p;
936       us_pipe_min = us_m_min + us_n + us_p;
937       us_extra = 0;
938 
939       vus_m = mclk_loop *1000*1000 / mclk_freq; /* Mclk latency in us */
940       vus_n = (4)*1000*1000 / nvclk_freq;/* nvclk latency in us */
941       vus_p = 0*1000*1000 / pclk_freq;/* pclk latency in us */
942       vus_pipe = vus_m + vus_n + vus_p;
943 
944       if(video_enable) {
945         video_drain_rate = pclk_freq * 4; /* MB/s */
946         crtc_drain_rate = pclk_freq * bpp/8; /* MB/s */
947 
948         vpagemiss = 1; /* self generating page miss */
949         vpagemiss += 1; /* One higher priority before */
950 
951         crtpagemiss = 2; /* self generating page miss */
952         if(mp_enable)
953             crtpagemiss += 1; /* if MA0 conflict */
954 
955         vpm_us = (vpagemiss * pagemiss)*1000*1000/mclk_freq;
956 
957         us_video = vpm_us + vus_m; /* Video has separate read return path */
958 
959         cpm_us = crtpagemiss  * pagemiss *1000*1000/ mclk_freq;
960         us_crt =
961           us_video  /* Wait for video */
962           +cpm_us /* CRT Page miss */
963           +us_m + us_n +us_p /* other latency */
964           ;
965 
966         clwm = us_crt * crtc_drain_rate/(1000*1000);
967         clwm++; /* fixed point <= float_point - 1.  Fixes that */
968       } else {
969         crtc_drain_rate = pclk_freq * bpp/8; /* bpp * pclk/8 */
970 
971         crtpagemiss = 1; /* self generating page miss */
972         crtpagemiss += 1; /* MA0 page miss */
973         if(mp_enable)
974             crtpagemiss += 1; /* if MA0 conflict */
975         cpm_us = crtpagemiss  * pagemiss *1000*1000/ mclk_freq;
976         us_crt =  cpm_us + us_m + us_n + us_p ;
977         clwm = us_crt * crtc_drain_rate/(1000*1000);
978         clwm++; /* fixed point <= float_point - 1.  Fixes that */
979 
980   /*
981           //
982           // Another concern, only for high pclks so don't do this
983           // with video:
984           // What happens if the latency to fetch the cbs is so large that
985           // fifo empties.  In that case we need to have an alternate clwm value
986           // based off the total burst fetch
987           //
988           us_crt = (cbs * 1000 * 1000)/ (8*width)/mclk_freq ;
989           us_crt = us_crt + us_m + us_n + us_p + (4 * 1000 * 1000)/mclk_freq;
990           clwm_mt = us_crt * crtc_drain_rate/(1000*1000);
991           clwm_mt ++;
992           if(clwm_mt > clwm)
993               clwm = clwm_mt;
994   */
995           /* Finally, a heuristic check when width == 64 bits */
996           if(width == 1){
997               nvclk_fill = nvclk_freq * 8;
998               if(crtc_drain_rate * 100 >= nvclk_fill * 102)
999                       clwm = 0xfff; /*Large number to fail */
1000 
1001               else if(crtc_drain_rate * 100  >= nvclk_fill * 98) {
1002                   clwm = 1024;
1003                   cbs = 512;
1004                   us_extra = (cbs * 1000 * 1000)/ (8*width)/mclk_freq ;
1005               }
1006           }
1007       }
1008 
1009 
1010       /*
1011         Overfill check:
1012 
1013         */
1014 
1015       clwm_rnd_down = ((int)clwm/8)*8;
1016       if (clwm_rnd_down < clwm)
1017           clwm += 8;
1018 
1019       m1 = clwm + cbs -  1024; /* Amount of overfill */
1020       m2us = us_pipe_min + us_min_mclk_extra;
1021       pclks_2_top_fifo = (1024-clwm)/(8*width);
1022 
1023       /* pclk cycles to drain */
1024       p1clk = m2us * pclk_freq/(1000*1000);
1025       p2 = p1clk * bpp / 8; /* bytes drained. */
1026 
1027       if((p2 < m1) && (m1 > 0)) {
1028           fifo->valid = 0;
1029           found = 0;
1030           if(min_mclk_extra == 0)   {
1031             if(cbs <= 32) {
1032               found = 1; /* Can't adjust anymore! */
1033             } else {
1034               cbs = cbs/2;  /* reduce the burst size */
1035             }
1036           } else {
1037             min_mclk_extra--;
1038           }
1039       } else {
1040         if (clwm > 1023){ /* Have some margin */
1041           fifo->valid = 0;
1042           found = 0;
1043           if(min_mclk_extra == 0)
1044               found = 1; /* Can't adjust anymore! */
1045           else
1046               min_mclk_extra--;
1047         }
1048       }
1049       craw = clwm;
1050 
1051       if(clwm < (1024-cbs+8)) clwm = 1024-cbs+8;
1052       data = (int)(clwm);
1053       /*  printf("CRT LWM: %f bytes, prog: 0x%x, bs: 256\n", clwm, data ); */
1054       fifo->graphics_lwm = data;   fifo->graphics_burst_size = cbs;
1055 
1056       /*  printf("VID LWM: %f bytes, prog: 0x%x, bs: %d\n, ", vlwm, data, vbs ); */
1057       fifo->video_lwm = 1024;  fifo->video_burst_size = 512;
1058     }
1059 }
1060 static void nv10UpdateArbitrationSettings
1061 (
1062     unsigned      VClk,
1063     unsigned      pixelDepth,
1064     unsigned     *burst,
1065     unsigned     *lwm,
1066     RIVA_HW_INST *chip
1067 )
1068 {
1069     nv10_fifo_info fifo_data;
1070     nv10_sim_state sim_data;
1071     unsigned int M, N, P, pll, MClk, NVClk, cfg1;
1072 
1073     pll = NV_RD32(&chip->PRAMDAC0[0x00000504/4], 0);
1074     M = (pll >> 0)  & 0xFF; N = (pll >> 8)  & 0xFF; P = (pll >> 16) & 0x0F;
1075     MClk  = (N * chip->CrystalFreqKHz / M) >> P;
1076     pll = NV_RD32(&chip->PRAMDAC0[0x00000500/4], 0);
1077     M = (pll >> 0)  & 0xFF; N = (pll >> 8)  & 0xFF; P = (pll >> 16) & 0x0F;
1078     NVClk  = (N * chip->CrystalFreqKHz / M) >> P;
1079     cfg1 = NV_RD32(&chip->PFB[0x00000204/4], 0);
1080     sim_data.pix_bpp        = (char)pixelDepth;
1081     sim_data.enable_video   = 0;
1082     sim_data.enable_mp      = 0;
1083     sim_data.memory_type    = (NV_RD32(&chip->PFB[0x00000200/4], 0) & 0x01) ?
1084 	1 : 0;
1085     sim_data.memory_width   = (NV_RD32(&chip->PEXTDEV[0x00000000/4], 0) & 0x10) ?
1086 	128 : 64;
1087     sim_data.mem_latency    = (char)cfg1 & 0x0F;
1088     sim_data.mem_aligned    = 1;
1089     sim_data.mem_page_miss  = (char)(((cfg1 >> 4) &0x0F) + ((cfg1 >> 31) & 0x01));
1090     sim_data.gr_during_vid  = 0;
1091     sim_data.pclk_khz       = VClk;
1092     sim_data.mclk_khz       = MClk;
1093     sim_data.nvclk_khz      = NVClk;
1094     nv10CalcArbitration(&fifo_data, &sim_data);
1095     if (fifo_data.valid)
1096     {
1097         int  b = fifo_data.graphics_burst_size >> 4;
1098         *burst = 0;
1099         while (b >>= 1)
1100 	    (*burst)++;
1101         *lwm   = fifo_data.graphics_lwm >> 3;
1102     }
1103 }
1104 
1105 static void nForceUpdateArbitrationSettings
1106 (
1107     unsigned      VClk,
1108     unsigned      pixelDepth,
1109     unsigned     *burst,
1110     unsigned     *lwm,
1111     RIVA_HW_INST *chip
1112 )
1113 {
1114     nv10_fifo_info fifo_data;
1115     nv10_sim_state sim_data;
1116     unsigned int M, N, P, pll, MClk, NVClk;
1117     unsigned int uMClkPostDiv;
1118     struct pci_dev *dev;
1119 
1120     dev = pci_get_bus_and_slot(0, 3);
1121     pci_read_config_dword(dev, 0x6C, &uMClkPostDiv);
1122     pci_dev_put(dev);
1123     uMClkPostDiv = (uMClkPostDiv >> 8) & 0xf;
1124 
1125     if(!uMClkPostDiv) uMClkPostDiv = 4;
1126     MClk = 400000 / uMClkPostDiv;
1127 
1128     pll = NV_RD32(&chip->PRAMDAC0[0x00000500/4], 0);
1129     M = (pll >> 0)  & 0xFF; N = (pll >> 8)  & 0xFF; P = (pll >> 16) & 0x0F;
1130     NVClk  = (N * chip->CrystalFreqKHz / M) >> P;
1131     sim_data.pix_bpp        = (char)pixelDepth;
1132     sim_data.enable_video   = 0;
1133     sim_data.enable_mp      = 0;
1134 
1135     dev = pci_get_bus_and_slot(0, 1);
1136     pci_read_config_dword(dev, 0x7C, &sim_data.memory_type);
1137     pci_dev_put(dev);
1138     sim_data.memory_type    = (sim_data.memory_type >> 12) & 1;
1139 
1140     sim_data.memory_width   = 64;
1141     sim_data.mem_latency    = 3;
1142     sim_data.mem_aligned    = 1;
1143     sim_data.mem_page_miss  = 10;
1144     sim_data.gr_during_vid  = 0;
1145     sim_data.pclk_khz       = VClk;
1146     sim_data.mclk_khz       = MClk;
1147     sim_data.nvclk_khz      = NVClk;
1148     nv10CalcArbitration(&fifo_data, &sim_data);
1149     if (fifo_data.valid)
1150     {
1151         int  b = fifo_data.graphics_burst_size >> 4;
1152         *burst = 0;
1153         while (b >>= 1)
1154 	    (*burst)++;
1155         *lwm   = fifo_data.graphics_lwm >> 3;
1156     }
1157 }
1158 
1159 /****************************************************************************\
1160 *                                                                            *
1161 *                          RIVA Mode State Routines                          *
1162 *                                                                            *
1163 \****************************************************************************/
1164 
1165 /*
1166  * Calculate the Video Clock parameters for the PLL.
1167  */
1168 static int CalcVClock
1169 (
1170     int           clockIn,
1171     int          *clockOut,
1172     int          *mOut,
1173     int          *nOut,
1174     int          *pOut,
1175     RIVA_HW_INST *chip
1176 )
1177 {
1178     unsigned lowM, highM, highP;
1179     unsigned DeltaNew, DeltaOld;
1180     unsigned VClk, Freq;
1181     unsigned M, N, P;
1182 
1183     DeltaOld = 0xFFFFFFFF;
1184 
1185     VClk     = (unsigned)clockIn;
1186 
1187     if (chip->CrystalFreqKHz == 13500)
1188     {
1189         lowM  = 7;
1190         highM = 13 - (chip->Architecture == NV_ARCH_03);
1191     }
1192     else
1193     {
1194         lowM  = 8;
1195         highM = 14 - (chip->Architecture == NV_ARCH_03);
1196     }
1197 
1198     highP = 4 - (chip->Architecture == NV_ARCH_03);
1199     for (P = 0; P <= highP; P ++)
1200     {
1201         Freq = VClk << P;
1202         if ((Freq >= 128000) && (Freq <= chip->MaxVClockFreqKHz))
1203         {
1204             for (M = lowM; M <= highM; M++)
1205             {
1206                 N    = (VClk << P) * M / chip->CrystalFreqKHz;
1207                 if(N <= 255) {
1208                 Freq = (chip->CrystalFreqKHz * N / M) >> P;
1209                 if (Freq > VClk)
1210                     DeltaNew = Freq - VClk;
1211                 else
1212                     DeltaNew = VClk - Freq;
1213                 if (DeltaNew < DeltaOld)
1214                 {
1215                     *mOut     = M;
1216                     *nOut     = N;
1217                     *pOut     = P;
1218                     *clockOut = Freq;
1219                     DeltaOld  = DeltaNew;
1220                 }
1221             }
1222         }
1223     }
1224     }
1225 
1226     /* non-zero: M/N/P/clock values assigned.  zero: error (not set) */
1227     return (DeltaOld != 0xFFFFFFFF);
1228 }
1229 /*
1230  * Calculate extended mode parameters (SVGA) and save in a
1231  * mode state structure.
1232  */
1233 int CalcStateExt
1234 (
1235     RIVA_HW_INST  *chip,
1236     RIVA_HW_STATE *state,
1237     int            bpp,
1238     int            width,
1239     int            hDisplaySize,
1240     int            height,
1241     int            dotClock
1242 )
1243 {
1244     int pixelDepth;
1245     int uninitialized_var(VClk),uninitialized_var(m),
1246         uninitialized_var(n),	uninitialized_var(p);
1247 
1248     /*
1249      * Save mode parameters.
1250      */
1251     state->bpp    = bpp;    /* this is not bitsPerPixel, it's 8,15,16,32 */
1252     state->width  = width;
1253     state->height = height;
1254     /*
1255      * Extended RIVA registers.
1256      */
1257     pixelDepth = (bpp + 1)/8;
1258     if (!CalcVClock(dotClock, &VClk, &m, &n, &p, chip))
1259     	return -EINVAL;
1260 
1261     switch (chip->Architecture)
1262     {
1263         case NV_ARCH_03:
1264             nv3UpdateArbitrationSettings(VClk,
1265                                          pixelDepth * 8,
1266                                         &(state->arbitration0),
1267                                         &(state->arbitration1),
1268                                          chip);
1269             state->cursor0  = 0x00;
1270             state->cursor1  = 0x78;
1271             state->cursor2  = 0x00000000;
1272             state->pllsel   = 0x10010100;
1273             state->config   = ((width + 31)/32)
1274                             | (((pixelDepth > 2) ? 3 : pixelDepth) << 8)
1275                             | 0x1000;
1276             state->general  = 0x00100100;
1277             state->repaint1 = hDisplaySize < 1280 ? 0x06 : 0x02;
1278             break;
1279         case NV_ARCH_04:
1280             nv4UpdateArbitrationSettings(VClk,
1281                                          pixelDepth * 8,
1282                                         &(state->arbitration0),
1283                                         &(state->arbitration1),
1284                                          chip);
1285             state->cursor0  = 0x00;
1286             state->cursor1  = 0xFC;
1287             state->cursor2  = 0x00000000;
1288             state->pllsel   = 0x10000700;
1289             state->config   = 0x00001114;
1290             state->general  = bpp == 16 ? 0x00101100 : 0x00100100;
1291             state->repaint1 = hDisplaySize < 1280 ? 0x04 : 0x00;
1292             break;
1293         case NV_ARCH_10:
1294         case NV_ARCH_20:
1295         case NV_ARCH_30:
1296             if((chip->Chipset == NV_CHIP_IGEFORCE2) ||
1297                (chip->Chipset == NV_CHIP_0x01F0))
1298             {
1299                 nForceUpdateArbitrationSettings(VClk,
1300                                           pixelDepth * 8,
1301                                          &(state->arbitration0),
1302                                          &(state->arbitration1),
1303                                           chip);
1304             } else {
1305                 nv10UpdateArbitrationSettings(VClk,
1306                                           pixelDepth * 8,
1307                                          &(state->arbitration0),
1308                                          &(state->arbitration1),
1309                                           chip);
1310             }
1311             state->cursor0  = 0x80 | (chip->CursorStart >> 17);
1312             state->cursor1  = (chip->CursorStart >> 11) << 2;
1313             state->cursor2  = chip->CursorStart >> 24;
1314             state->pllsel   = 0x10000700;
1315             state->config   = NV_RD32(&chip->PFB[0x00000200/4], 0);
1316             state->general  = bpp == 16 ? 0x00101100 : 0x00100100;
1317             state->repaint1 = hDisplaySize < 1280 ? 0x04 : 0x00;
1318             break;
1319     }
1320 
1321      /* Paul Richards: below if block borks things in kernel for some reason */
1322      /* Tony: Below is needed to set hardware in DirectColor */
1323     if((bpp != 8) && (chip->Architecture != NV_ARCH_03))
1324 	    state->general |= 0x00000030;
1325 
1326     state->vpll     = (p << 16) | (n << 8) | m;
1327     state->repaint0 = (((width/8)*pixelDepth) & 0x700) >> 3;
1328     state->pixel    = pixelDepth > 2   ? 3    : pixelDepth;
1329     state->offset0  =
1330     state->offset1  =
1331     state->offset2  =
1332     state->offset3  = 0;
1333     state->pitch0   =
1334     state->pitch1   =
1335     state->pitch2   =
1336     state->pitch3   = pixelDepth * width;
1337 
1338     return 0;
1339 }
1340 /*
1341  * Load fixed function state and pre-calculated/stored state.
1342  */
1343 #if 0
1344 #define LOAD_FIXED_STATE(tbl,dev)                                       \
1345     for (i = 0; i < sizeof(tbl##Table##dev)/8; i++)                 \
1346         chip->dev[tbl##Table##dev[i][0]] = tbl##Table##dev[i][1]
1347 #define LOAD_FIXED_STATE_8BPP(tbl,dev)                                  \
1348     for (i = 0; i < sizeof(tbl##Table##dev##_8BPP)/8; i++)            \
1349         chip->dev[tbl##Table##dev##_8BPP[i][0]] = tbl##Table##dev##_8BPP[i][1]
1350 #define LOAD_FIXED_STATE_15BPP(tbl,dev)                                 \
1351     for (i = 0; i < sizeof(tbl##Table##dev##_15BPP)/8; i++)           \
1352         chip->dev[tbl##Table##dev##_15BPP[i][0]] = tbl##Table##dev##_15BPP[i][1]
1353 #define LOAD_FIXED_STATE_16BPP(tbl,dev)                                 \
1354     for (i = 0; i < sizeof(tbl##Table##dev##_16BPP)/8; i++)           \
1355         chip->dev[tbl##Table##dev##_16BPP[i][0]] = tbl##Table##dev##_16BPP[i][1]
1356 #define LOAD_FIXED_STATE_32BPP(tbl,dev)                                 \
1357     for (i = 0; i < sizeof(tbl##Table##dev##_32BPP)/8; i++)           \
1358         chip->dev[tbl##Table##dev##_32BPP[i][0]] = tbl##Table##dev##_32BPP[i][1]
1359 #endif
1360 
1361 #define LOAD_FIXED_STATE(tbl,dev)                                       \
1362     for (i = 0; i < sizeof(tbl##Table##dev)/8; i++)                 \
1363         NV_WR32(&chip->dev[tbl##Table##dev[i][0]], 0, tbl##Table##dev[i][1])
1364 #define LOAD_FIXED_STATE_8BPP(tbl,dev)                                  \
1365     for (i = 0; i < sizeof(tbl##Table##dev##_8BPP)/8; i++)            \
1366         NV_WR32(&chip->dev[tbl##Table##dev##_8BPP[i][0]], 0, tbl##Table##dev##_8BPP[i][1])
1367 #define LOAD_FIXED_STATE_15BPP(tbl,dev)                                 \
1368     for (i = 0; i < sizeof(tbl##Table##dev##_15BPP)/8; i++)           \
1369         NV_WR32(&chip->dev[tbl##Table##dev##_15BPP[i][0]], 0, tbl##Table##dev##_15BPP[i][1])
1370 #define LOAD_FIXED_STATE_16BPP(tbl,dev)                                 \
1371     for (i = 0; i < sizeof(tbl##Table##dev##_16BPP)/8; i++)           \
1372         NV_WR32(&chip->dev[tbl##Table##dev##_16BPP[i][0]], 0, tbl##Table##dev##_16BPP[i][1])
1373 #define LOAD_FIXED_STATE_32BPP(tbl,dev)                                 \
1374     for (i = 0; i < sizeof(tbl##Table##dev##_32BPP)/8; i++)           \
1375         NV_WR32(&chip->dev[tbl##Table##dev##_32BPP[i][0]], 0, tbl##Table##dev##_32BPP[i][1])
1376 
1377 static void UpdateFifoState
1378 (
1379     RIVA_HW_INST  *chip
1380 )
1381 {
1382     int i;
1383 
1384     switch (chip->Architecture)
1385     {
1386         case NV_ARCH_04:
1387             LOAD_FIXED_STATE(nv4,FIFO);
1388             chip->Tri03 = NULL;
1389             chip->Tri05 = (RivaTexturedTriangle05 __iomem *)&(chip->FIFO[0x0000E000/4]);
1390             break;
1391         case NV_ARCH_10:
1392         case NV_ARCH_20:
1393         case NV_ARCH_30:
1394             /*
1395              * Initialize state for the RivaTriangle3D05 routines.
1396              */
1397             LOAD_FIXED_STATE(nv10tri05,PGRAPH);
1398             LOAD_FIXED_STATE(nv10,FIFO);
1399             chip->Tri03 = NULL;
1400             chip->Tri05 = (RivaTexturedTriangle05 __iomem *)&(chip->FIFO[0x0000E000/4]);
1401             break;
1402     }
1403 }
1404 static void LoadStateExt
1405 (
1406     RIVA_HW_INST  *chip,
1407     RIVA_HW_STATE *state
1408 )
1409 {
1410     int i;
1411 
1412     /*
1413      * Load HW fixed function state.
1414      */
1415     LOAD_FIXED_STATE(Riva,PMC);
1416     LOAD_FIXED_STATE(Riva,PTIMER);
1417     switch (chip->Architecture)
1418     {
1419         case NV_ARCH_03:
1420             /*
1421              * Make sure frame buffer config gets set before loading PRAMIN.
1422              */
1423             NV_WR32(chip->PFB, 0x00000200, state->config);
1424             LOAD_FIXED_STATE(nv3,PFIFO);
1425             LOAD_FIXED_STATE(nv3,PRAMIN);
1426             LOAD_FIXED_STATE(nv3,PGRAPH);
1427             switch (state->bpp)
1428             {
1429                 case 15:
1430                 case 16:
1431                     LOAD_FIXED_STATE_15BPP(nv3,PRAMIN);
1432                     LOAD_FIXED_STATE_15BPP(nv3,PGRAPH);
1433                     chip->Tri03 = (RivaTexturedTriangle03  __iomem *)&(chip->FIFO[0x0000E000/4]);
1434                     break;
1435                 case 24:
1436                 case 32:
1437                     LOAD_FIXED_STATE_32BPP(nv3,PRAMIN);
1438                     LOAD_FIXED_STATE_32BPP(nv3,PGRAPH);
1439                     chip->Tri03 = NULL;
1440                     break;
1441                 case 8:
1442                 default:
1443                     LOAD_FIXED_STATE_8BPP(nv3,PRAMIN);
1444                     LOAD_FIXED_STATE_8BPP(nv3,PGRAPH);
1445                     chip->Tri03 = NULL;
1446                     break;
1447             }
1448             for (i = 0x00000; i < 0x00800; i++)
1449                 NV_WR32(&chip->PRAMIN[0x00000502 + i], 0, (i << 12) | 0x03);
1450             NV_WR32(chip->PGRAPH, 0x00000630, state->offset0);
1451             NV_WR32(chip->PGRAPH, 0x00000634, state->offset1);
1452             NV_WR32(chip->PGRAPH, 0x00000638, state->offset2);
1453             NV_WR32(chip->PGRAPH, 0x0000063C, state->offset3);
1454             NV_WR32(chip->PGRAPH, 0x00000650, state->pitch0);
1455             NV_WR32(chip->PGRAPH, 0x00000654, state->pitch1);
1456             NV_WR32(chip->PGRAPH, 0x00000658, state->pitch2);
1457             NV_WR32(chip->PGRAPH, 0x0000065C, state->pitch3);
1458             break;
1459         case NV_ARCH_04:
1460             /*
1461              * Make sure frame buffer config gets set before loading PRAMIN.
1462              */
1463             NV_WR32(chip->PFB, 0x00000200, state->config);
1464             LOAD_FIXED_STATE(nv4,PFIFO);
1465             LOAD_FIXED_STATE(nv4,PRAMIN);
1466             LOAD_FIXED_STATE(nv4,PGRAPH);
1467             switch (state->bpp)
1468             {
1469                 case 15:
1470                     LOAD_FIXED_STATE_15BPP(nv4,PRAMIN);
1471                     LOAD_FIXED_STATE_15BPP(nv4,PGRAPH);
1472                     chip->Tri03 = (RivaTexturedTriangle03  __iomem *)&(chip->FIFO[0x0000E000/4]);
1473                     break;
1474                 case 16:
1475                     LOAD_FIXED_STATE_16BPP(nv4,PRAMIN);
1476                     LOAD_FIXED_STATE_16BPP(nv4,PGRAPH);
1477                     chip->Tri03 = (RivaTexturedTriangle03  __iomem *)&(chip->FIFO[0x0000E000/4]);
1478                     break;
1479                 case 24:
1480                 case 32:
1481                     LOAD_FIXED_STATE_32BPP(nv4,PRAMIN);
1482                     LOAD_FIXED_STATE_32BPP(nv4,PGRAPH);
1483                     chip->Tri03 = NULL;
1484                     break;
1485                 case 8:
1486                 default:
1487                     LOAD_FIXED_STATE_8BPP(nv4,PRAMIN);
1488                     LOAD_FIXED_STATE_8BPP(nv4,PGRAPH);
1489                     chip->Tri03 = NULL;
1490                     break;
1491             }
1492             NV_WR32(chip->PGRAPH, 0x00000640, state->offset0);
1493             NV_WR32(chip->PGRAPH, 0x00000644, state->offset1);
1494             NV_WR32(chip->PGRAPH, 0x00000648, state->offset2);
1495             NV_WR32(chip->PGRAPH, 0x0000064C, state->offset3);
1496             NV_WR32(chip->PGRAPH, 0x00000670, state->pitch0);
1497             NV_WR32(chip->PGRAPH, 0x00000674, state->pitch1);
1498             NV_WR32(chip->PGRAPH, 0x00000678, state->pitch2);
1499             NV_WR32(chip->PGRAPH, 0x0000067C, state->pitch3);
1500             break;
1501         case NV_ARCH_10:
1502         case NV_ARCH_20:
1503         case NV_ARCH_30:
1504             if(chip->twoHeads) {
1505                VGA_WR08(chip->PCIO, 0x03D4, 0x44);
1506                VGA_WR08(chip->PCIO, 0x03D5, state->crtcOwner);
1507                chip->LockUnlock(chip, 0);
1508             }
1509 
1510             LOAD_FIXED_STATE(nv10,PFIFO);
1511             LOAD_FIXED_STATE(nv10,PRAMIN);
1512             LOAD_FIXED_STATE(nv10,PGRAPH);
1513             switch (state->bpp)
1514             {
1515                 case 15:
1516                     LOAD_FIXED_STATE_15BPP(nv10,PRAMIN);
1517                     LOAD_FIXED_STATE_15BPP(nv10,PGRAPH);
1518                     chip->Tri03 = (RivaTexturedTriangle03  __iomem *)&(chip->FIFO[0x0000E000/4]);
1519                     break;
1520                 case 16:
1521                     LOAD_FIXED_STATE_16BPP(nv10,PRAMIN);
1522                     LOAD_FIXED_STATE_16BPP(nv10,PGRAPH);
1523                     chip->Tri03 = (RivaTexturedTriangle03  __iomem *)&(chip->FIFO[0x0000E000/4]);
1524                     break;
1525                 case 24:
1526                 case 32:
1527                     LOAD_FIXED_STATE_32BPP(nv10,PRAMIN);
1528                     LOAD_FIXED_STATE_32BPP(nv10,PGRAPH);
1529                     chip->Tri03 = NULL;
1530                     break;
1531                 case 8:
1532                 default:
1533                     LOAD_FIXED_STATE_8BPP(nv10,PRAMIN);
1534                     LOAD_FIXED_STATE_8BPP(nv10,PGRAPH);
1535                     chip->Tri03 = NULL;
1536                     break;
1537             }
1538 
1539             if(chip->Architecture == NV_ARCH_10) {
1540                 NV_WR32(chip->PGRAPH, 0x00000640, state->offset0);
1541                 NV_WR32(chip->PGRAPH, 0x00000644, state->offset1);
1542                 NV_WR32(chip->PGRAPH, 0x00000648, state->offset2);
1543                 NV_WR32(chip->PGRAPH, 0x0000064C, state->offset3);
1544                 NV_WR32(chip->PGRAPH, 0x00000670, state->pitch0);
1545                 NV_WR32(chip->PGRAPH, 0x00000674, state->pitch1);
1546                 NV_WR32(chip->PGRAPH, 0x00000678, state->pitch2);
1547                 NV_WR32(chip->PGRAPH, 0x0000067C, state->pitch3);
1548                 NV_WR32(chip->PGRAPH, 0x00000680, state->pitch3);
1549         } else {
1550         NV_WR32(chip->PGRAPH, 0x00000820, state->offset0);
1551         NV_WR32(chip->PGRAPH, 0x00000824, state->offset1);
1552         NV_WR32(chip->PGRAPH, 0x00000828, state->offset2);
1553         NV_WR32(chip->PGRAPH, 0x0000082C, state->offset3);
1554         NV_WR32(chip->PGRAPH, 0x00000850, state->pitch0);
1555         NV_WR32(chip->PGRAPH, 0x00000854, state->pitch1);
1556         NV_WR32(chip->PGRAPH, 0x00000858, state->pitch2);
1557         NV_WR32(chip->PGRAPH, 0x0000085C, state->pitch3);
1558         NV_WR32(chip->PGRAPH, 0x00000860, state->pitch3);
1559         NV_WR32(chip->PGRAPH, 0x00000864, state->pitch3);
1560         NV_WR32(chip->PGRAPH, 0x000009A4, NV_RD32(chip->PFB, 0x00000200));
1561         NV_WR32(chip->PGRAPH, 0x000009A8, NV_RD32(chip->PFB, 0x00000204));
1562         }
1563             if(chip->twoHeads) {
1564                NV_WR32(chip->PCRTC0, 0x00000860, state->head);
1565                NV_WR32(chip->PCRTC0, 0x00002860, state->head2);
1566             }
1567             NV_WR32(chip->PRAMDAC, 0x00000404, NV_RD32(chip->PRAMDAC, 0x00000404) | (1 << 25));
1568 
1569             NV_WR32(chip->PMC, 0x00008704, 1);
1570             NV_WR32(chip->PMC, 0x00008140, 0);
1571             NV_WR32(chip->PMC, 0x00008920, 0);
1572             NV_WR32(chip->PMC, 0x00008924, 0);
1573             NV_WR32(chip->PMC, 0x00008908, 0x01ffffff);
1574             NV_WR32(chip->PMC, 0x0000890C, 0x01ffffff);
1575             NV_WR32(chip->PMC, 0x00001588, 0);
1576 
1577             NV_WR32(chip->PFB, 0x00000240, 0);
1578             NV_WR32(chip->PFB, 0x00000250, 0);
1579             NV_WR32(chip->PFB, 0x00000260, 0);
1580             NV_WR32(chip->PFB, 0x00000270, 0);
1581             NV_WR32(chip->PFB, 0x00000280, 0);
1582             NV_WR32(chip->PFB, 0x00000290, 0);
1583             NV_WR32(chip->PFB, 0x000002A0, 0);
1584             NV_WR32(chip->PFB, 0x000002B0, 0);
1585 
1586             NV_WR32(chip->PGRAPH, 0x00000B00, NV_RD32(chip->PFB, 0x00000240));
1587             NV_WR32(chip->PGRAPH, 0x00000B04, NV_RD32(chip->PFB, 0x00000244));
1588             NV_WR32(chip->PGRAPH, 0x00000B08, NV_RD32(chip->PFB, 0x00000248));
1589             NV_WR32(chip->PGRAPH, 0x00000B0C, NV_RD32(chip->PFB, 0x0000024C));
1590             NV_WR32(chip->PGRAPH, 0x00000B10, NV_RD32(chip->PFB, 0x00000250));
1591             NV_WR32(chip->PGRAPH, 0x00000B14, NV_RD32(chip->PFB, 0x00000254));
1592             NV_WR32(chip->PGRAPH, 0x00000B18, NV_RD32(chip->PFB, 0x00000258));
1593             NV_WR32(chip->PGRAPH, 0x00000B1C, NV_RD32(chip->PFB, 0x0000025C));
1594             NV_WR32(chip->PGRAPH, 0x00000B20, NV_RD32(chip->PFB, 0x00000260));
1595             NV_WR32(chip->PGRAPH, 0x00000B24, NV_RD32(chip->PFB, 0x00000264));
1596             NV_WR32(chip->PGRAPH, 0x00000B28, NV_RD32(chip->PFB, 0x00000268));
1597             NV_WR32(chip->PGRAPH, 0x00000B2C, NV_RD32(chip->PFB, 0x0000026C));
1598             NV_WR32(chip->PGRAPH, 0x00000B30, NV_RD32(chip->PFB, 0x00000270));
1599             NV_WR32(chip->PGRAPH, 0x00000B34, NV_RD32(chip->PFB, 0x00000274));
1600             NV_WR32(chip->PGRAPH, 0x00000B38, NV_RD32(chip->PFB, 0x00000278));
1601             NV_WR32(chip->PGRAPH, 0x00000B3C, NV_RD32(chip->PFB, 0x0000027C));
1602             NV_WR32(chip->PGRAPH, 0x00000B40, NV_RD32(chip->PFB, 0x00000280));
1603             NV_WR32(chip->PGRAPH, 0x00000B44, NV_RD32(chip->PFB, 0x00000284));
1604             NV_WR32(chip->PGRAPH, 0x00000B48, NV_RD32(chip->PFB, 0x00000288));
1605             NV_WR32(chip->PGRAPH, 0x00000B4C, NV_RD32(chip->PFB, 0x0000028C));
1606             NV_WR32(chip->PGRAPH, 0x00000B50, NV_RD32(chip->PFB, 0x00000290));
1607             NV_WR32(chip->PGRAPH, 0x00000B54, NV_RD32(chip->PFB, 0x00000294));
1608             NV_WR32(chip->PGRAPH, 0x00000B58, NV_RD32(chip->PFB, 0x00000298));
1609             NV_WR32(chip->PGRAPH, 0x00000B5C, NV_RD32(chip->PFB, 0x0000029C));
1610             NV_WR32(chip->PGRAPH, 0x00000B60, NV_RD32(chip->PFB, 0x000002A0));
1611             NV_WR32(chip->PGRAPH, 0x00000B64, NV_RD32(chip->PFB, 0x000002A4));
1612             NV_WR32(chip->PGRAPH, 0x00000B68, NV_RD32(chip->PFB, 0x000002A8));
1613             NV_WR32(chip->PGRAPH, 0x00000B6C, NV_RD32(chip->PFB, 0x000002AC));
1614             NV_WR32(chip->PGRAPH, 0x00000B70, NV_RD32(chip->PFB, 0x000002B0));
1615             NV_WR32(chip->PGRAPH, 0x00000B74, NV_RD32(chip->PFB, 0x000002B4));
1616             NV_WR32(chip->PGRAPH, 0x00000B78, NV_RD32(chip->PFB, 0x000002B8));
1617             NV_WR32(chip->PGRAPH, 0x00000B7C, NV_RD32(chip->PFB, 0x000002BC));
1618             NV_WR32(chip->PGRAPH, 0x00000F40, 0x10000000);
1619             NV_WR32(chip->PGRAPH, 0x00000F44, 0x00000000);
1620             NV_WR32(chip->PGRAPH, 0x00000F50, 0x00000040);
1621             NV_WR32(chip->PGRAPH, 0x00000F54, 0x00000008);
1622             NV_WR32(chip->PGRAPH, 0x00000F50, 0x00000200);
1623             for (i = 0; i < (3*16); i++)
1624                 NV_WR32(chip->PGRAPH, 0x00000F54, 0x00000000);
1625             NV_WR32(chip->PGRAPH, 0x00000F50, 0x00000040);
1626             NV_WR32(chip->PGRAPH, 0x00000F54, 0x00000000);
1627             NV_WR32(chip->PGRAPH, 0x00000F50, 0x00000800);
1628             for (i = 0; i < (16*16); i++)
1629                 NV_WR32(chip->PGRAPH, 0x00000F54, 0x00000000);
1630             NV_WR32(chip->PGRAPH, 0x00000F40, 0x30000000);
1631             NV_WR32(chip->PGRAPH, 0x00000F44, 0x00000004);
1632             NV_WR32(chip->PGRAPH, 0x00000F50, 0x00006400);
1633             for (i = 0; i < (59*4); i++)
1634                 NV_WR32(chip->PGRAPH, 0x00000F54, 0x00000000);
1635             NV_WR32(chip->PGRAPH, 0x00000F50, 0x00006800);
1636             for (i = 0; i < (47*4); i++)
1637                 NV_WR32(chip->PGRAPH, 0x00000F54, 0x00000000);
1638             NV_WR32(chip->PGRAPH, 0x00000F50, 0x00006C00);
1639             for (i = 0; i < (3*4); i++)
1640                 NV_WR32(chip->PGRAPH, 0x00000F54, 0x00000000);
1641             NV_WR32(chip->PGRAPH, 0x00000F50, 0x00007000);
1642             for (i = 0; i < (19*4); i++)
1643                 NV_WR32(chip->PGRAPH, 0x00000F54, 0x00000000);
1644             NV_WR32(chip->PGRAPH, 0x00000F50, 0x00007400);
1645             for (i = 0; i < (12*4); i++)
1646                 NV_WR32(chip->PGRAPH, 0x00000F54, 0x00000000);
1647             NV_WR32(chip->PGRAPH, 0x00000F50, 0x00007800);
1648             for (i = 0; i < (12*4); i++)
1649                 NV_WR32(chip->PGRAPH, 0x00000F54, 0x00000000);
1650             NV_WR32(chip->PGRAPH, 0x00000F50, 0x00004400);
1651             for (i = 0; i < (8*4); i++)
1652                 NV_WR32(chip->PGRAPH, 0x00000F54, 0x00000000);
1653             NV_WR32(chip->PGRAPH, 0x00000F50, 0x00000000);
1654             for (i = 0; i < 16; i++)
1655                 NV_WR32(chip->PGRAPH, 0x00000F54, 0x00000000);
1656             NV_WR32(chip->PGRAPH, 0x00000F50, 0x00000040);
1657             for (i = 0; i < 4; i++)
1658                 NV_WR32(chip->PGRAPH, 0x00000F54, 0x00000000);
1659 
1660             NV_WR32(chip->PCRTC, 0x00000810, state->cursorConfig);
1661 
1662             if(chip->flatPanel) {
1663                if((chip->Chipset & 0x0ff0) == 0x0110) {
1664                    NV_WR32(chip->PRAMDAC, 0x0528, state->dither);
1665                } else
1666                if((chip->Chipset & 0x0ff0) >= 0x0170) {
1667                    NV_WR32(chip->PRAMDAC, 0x083C, state->dither);
1668                }
1669 
1670                VGA_WR08(chip->PCIO, 0x03D4, 0x53);
1671                VGA_WR08(chip->PCIO, 0x03D5, 0);
1672                VGA_WR08(chip->PCIO, 0x03D4, 0x54);
1673                VGA_WR08(chip->PCIO, 0x03D5, 0);
1674                VGA_WR08(chip->PCIO, 0x03D4, 0x21);
1675                VGA_WR08(chip->PCIO, 0x03D5, 0xfa);
1676             }
1677 
1678             VGA_WR08(chip->PCIO, 0x03D4, 0x41);
1679             VGA_WR08(chip->PCIO, 0x03D5, state->extra);
1680     }
1681     LOAD_FIXED_STATE(Riva,FIFO);
1682     UpdateFifoState(chip);
1683     /*
1684      * Load HW mode state.
1685      */
1686     VGA_WR08(chip->PCIO, 0x03D4, 0x19);
1687     VGA_WR08(chip->PCIO, 0x03D5, state->repaint0);
1688     VGA_WR08(chip->PCIO, 0x03D4, 0x1A);
1689     VGA_WR08(chip->PCIO, 0x03D5, state->repaint1);
1690     VGA_WR08(chip->PCIO, 0x03D4, 0x25);
1691     VGA_WR08(chip->PCIO, 0x03D5, state->screen);
1692     VGA_WR08(chip->PCIO, 0x03D4, 0x28);
1693     VGA_WR08(chip->PCIO, 0x03D5, state->pixel);
1694     VGA_WR08(chip->PCIO, 0x03D4, 0x2D);
1695     VGA_WR08(chip->PCIO, 0x03D5, state->horiz);
1696     VGA_WR08(chip->PCIO, 0x03D4, 0x1B);
1697     VGA_WR08(chip->PCIO, 0x03D5, state->arbitration0);
1698     VGA_WR08(chip->PCIO, 0x03D4, 0x20);
1699     VGA_WR08(chip->PCIO, 0x03D5, state->arbitration1);
1700     VGA_WR08(chip->PCIO, 0x03D4, 0x30);
1701     VGA_WR08(chip->PCIO, 0x03D5, state->cursor0);
1702     VGA_WR08(chip->PCIO, 0x03D4, 0x31);
1703     VGA_WR08(chip->PCIO, 0x03D5, state->cursor1);
1704     VGA_WR08(chip->PCIO, 0x03D4, 0x2F);
1705     VGA_WR08(chip->PCIO, 0x03D5, state->cursor2);
1706     VGA_WR08(chip->PCIO, 0x03D4, 0x39);
1707     VGA_WR08(chip->PCIO, 0x03D5, state->interlace);
1708 
1709     if(!chip->flatPanel) {
1710        NV_WR32(chip->PRAMDAC0, 0x00000508, state->vpll);
1711        NV_WR32(chip->PRAMDAC0, 0x0000050C, state->pllsel);
1712        if(chip->twoHeads)
1713           NV_WR32(chip->PRAMDAC0, 0x00000520, state->vpll2);
1714     }  else {
1715        NV_WR32(chip->PRAMDAC, 0x00000848 , state->scale);
1716     }
1717     NV_WR32(chip->PRAMDAC, 0x00000600 , state->general);
1718 
1719     /*
1720      * Turn off VBlank enable and reset.
1721      */
1722     NV_WR32(chip->PCRTC, 0x00000140, 0);
1723     NV_WR32(chip->PCRTC, 0x00000100, chip->VBlankBit);
1724     /*
1725      * Set interrupt enable.
1726      */
1727     NV_WR32(chip->PMC, 0x00000140, chip->EnableIRQ & 0x01);
1728     /*
1729      * Set current state pointer.
1730      */
1731     chip->CurrentState = state;
1732     /*
1733      * Reset FIFO free and empty counts.
1734      */
1735     chip->FifoFreeCount  = 0;
1736     /* Free count from first subchannel */
1737     chip->FifoEmptyCount = NV_RD32(&chip->Rop->FifoFree, 0);
1738 }
1739 static void UnloadStateExt
1740 (
1741     RIVA_HW_INST  *chip,
1742     RIVA_HW_STATE *state
1743 )
1744 {
1745     /*
1746      * Save current HW state.
1747      */
1748     VGA_WR08(chip->PCIO, 0x03D4, 0x19);
1749     state->repaint0     = VGA_RD08(chip->PCIO, 0x03D5);
1750     VGA_WR08(chip->PCIO, 0x03D4, 0x1A);
1751     state->repaint1     = VGA_RD08(chip->PCIO, 0x03D5);
1752     VGA_WR08(chip->PCIO, 0x03D4, 0x25);
1753     state->screen       = VGA_RD08(chip->PCIO, 0x03D5);
1754     VGA_WR08(chip->PCIO, 0x03D4, 0x28);
1755     state->pixel        = VGA_RD08(chip->PCIO, 0x03D5);
1756     VGA_WR08(chip->PCIO, 0x03D4, 0x2D);
1757     state->horiz        = VGA_RD08(chip->PCIO, 0x03D5);
1758     VGA_WR08(chip->PCIO, 0x03D4, 0x1B);
1759     state->arbitration0 = VGA_RD08(chip->PCIO, 0x03D5);
1760     VGA_WR08(chip->PCIO, 0x03D4, 0x20);
1761     state->arbitration1 = VGA_RD08(chip->PCIO, 0x03D5);
1762     VGA_WR08(chip->PCIO, 0x03D4, 0x30);
1763     state->cursor0      = VGA_RD08(chip->PCIO, 0x03D5);
1764     VGA_WR08(chip->PCIO, 0x03D4, 0x31);
1765     state->cursor1      = VGA_RD08(chip->PCIO, 0x03D5);
1766     VGA_WR08(chip->PCIO, 0x03D4, 0x2F);
1767     state->cursor2      = VGA_RD08(chip->PCIO, 0x03D5);
1768     VGA_WR08(chip->PCIO, 0x03D4, 0x39);
1769     state->interlace    = VGA_RD08(chip->PCIO, 0x03D5);
1770     state->vpll         = NV_RD32(chip->PRAMDAC0, 0x00000508);
1771     state->vpll2        = NV_RD32(chip->PRAMDAC0, 0x00000520);
1772     state->pllsel       = NV_RD32(chip->PRAMDAC0, 0x0000050C);
1773     state->general      = NV_RD32(chip->PRAMDAC, 0x00000600);
1774     state->scale        = NV_RD32(chip->PRAMDAC, 0x00000848);
1775     state->config       = NV_RD32(chip->PFB, 0x00000200);
1776     switch (chip->Architecture)
1777     {
1778         case NV_ARCH_03:
1779             state->offset0  = NV_RD32(chip->PGRAPH, 0x00000630);
1780             state->offset1  = NV_RD32(chip->PGRAPH, 0x00000634);
1781             state->offset2  = NV_RD32(chip->PGRAPH, 0x00000638);
1782             state->offset3  = NV_RD32(chip->PGRAPH, 0x0000063C);
1783             state->pitch0   = NV_RD32(chip->PGRAPH, 0x00000650);
1784             state->pitch1   = NV_RD32(chip->PGRAPH, 0x00000654);
1785             state->pitch2   = NV_RD32(chip->PGRAPH, 0x00000658);
1786             state->pitch3   = NV_RD32(chip->PGRAPH, 0x0000065C);
1787             break;
1788         case NV_ARCH_04:
1789             state->offset0  = NV_RD32(chip->PGRAPH, 0x00000640);
1790             state->offset1  = NV_RD32(chip->PGRAPH, 0x00000644);
1791             state->offset2  = NV_RD32(chip->PGRAPH, 0x00000648);
1792             state->offset3  = NV_RD32(chip->PGRAPH, 0x0000064C);
1793             state->pitch0   = NV_RD32(chip->PGRAPH, 0x00000670);
1794             state->pitch1   = NV_RD32(chip->PGRAPH, 0x00000674);
1795             state->pitch2   = NV_RD32(chip->PGRAPH, 0x00000678);
1796             state->pitch3   = NV_RD32(chip->PGRAPH, 0x0000067C);
1797             break;
1798         case NV_ARCH_10:
1799         case NV_ARCH_20:
1800         case NV_ARCH_30:
1801             state->offset0  = NV_RD32(chip->PGRAPH, 0x00000640);
1802             state->offset1  = NV_RD32(chip->PGRAPH, 0x00000644);
1803             state->offset2  = NV_RD32(chip->PGRAPH, 0x00000648);
1804             state->offset3  = NV_RD32(chip->PGRAPH, 0x0000064C);
1805             state->pitch0   = NV_RD32(chip->PGRAPH, 0x00000670);
1806             state->pitch1   = NV_RD32(chip->PGRAPH, 0x00000674);
1807             state->pitch2   = NV_RD32(chip->PGRAPH, 0x00000678);
1808             state->pitch3   = NV_RD32(chip->PGRAPH, 0x0000067C);
1809             if(chip->twoHeads) {
1810                state->head     = NV_RD32(chip->PCRTC0, 0x00000860);
1811                state->head2    = NV_RD32(chip->PCRTC0, 0x00002860);
1812                VGA_WR08(chip->PCIO, 0x03D4, 0x44);
1813                state->crtcOwner = VGA_RD08(chip->PCIO, 0x03D5);
1814             }
1815             VGA_WR08(chip->PCIO, 0x03D4, 0x41);
1816             state->extra = VGA_RD08(chip->PCIO, 0x03D5);
1817             state->cursorConfig = NV_RD32(chip->PCRTC, 0x00000810);
1818 
1819             if((chip->Chipset & 0x0ff0) == 0x0110) {
1820                 state->dither = NV_RD32(chip->PRAMDAC, 0x0528);
1821             } else
1822             if((chip->Chipset & 0x0ff0) >= 0x0170) {
1823                 state->dither = NV_RD32(chip->PRAMDAC, 0x083C);
1824             }
1825             break;
1826     }
1827 }
1828 static void SetStartAddress
1829 (
1830     RIVA_HW_INST *chip,
1831     unsigned      start
1832 )
1833 {
1834     NV_WR32(chip->PCRTC, 0x800, start);
1835 }
1836 
1837 static void SetStartAddress3
1838 (
1839     RIVA_HW_INST *chip,
1840     unsigned      start
1841 )
1842 {
1843     int offset = start >> 2;
1844     int pan    = (start & 3) << 1;
1845     unsigned char tmp;
1846 
1847     /*
1848      * Unlock extended registers.
1849      */
1850     chip->LockUnlock(chip, 0);
1851     /*
1852      * Set start address.
1853      */
1854     VGA_WR08(chip->PCIO, 0x3D4, 0x0D); VGA_WR08(chip->PCIO, 0x3D5, offset);
1855     offset >>= 8;
1856     VGA_WR08(chip->PCIO, 0x3D4, 0x0C); VGA_WR08(chip->PCIO, 0x3D5, offset);
1857     offset >>= 8;
1858     VGA_WR08(chip->PCIO, 0x3D4, 0x19); tmp = VGA_RD08(chip->PCIO, 0x3D5);
1859     VGA_WR08(chip->PCIO, 0x3D5, (offset & 0x01F) | (tmp & ~0x1F));
1860     VGA_WR08(chip->PCIO, 0x3D4, 0x2D); tmp = VGA_RD08(chip->PCIO, 0x3D5);
1861     VGA_WR08(chip->PCIO, 0x3D5, (offset & 0x60) | (tmp & ~0x60));
1862     /*
1863      * 4 pixel pan register.
1864      */
1865     offset = VGA_RD08(chip->PCIO, chip->IO + 0x0A);
1866     VGA_WR08(chip->PCIO, 0x3C0, 0x13);
1867     VGA_WR08(chip->PCIO, 0x3C0, pan);
1868 }
1869 static void nv3SetSurfaces2D
1870 (
1871     RIVA_HW_INST *chip,
1872     unsigned     surf0,
1873     unsigned     surf1
1874 )
1875 {
1876     RivaSurface __iomem *Surface =
1877 	(RivaSurface __iomem *)&(chip->FIFO[0x0000E000/4]);
1878 
1879     RIVA_FIFO_FREE(*chip,Tri03,5);
1880     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000003);
1881     NV_WR32(&Surface->Offset, 0, surf0);
1882     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000004);
1883     NV_WR32(&Surface->Offset, 0, surf1);
1884     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000013);
1885 }
1886 static void nv4SetSurfaces2D
1887 (
1888     RIVA_HW_INST *chip,
1889     unsigned     surf0,
1890     unsigned     surf1
1891 )
1892 {
1893     RivaSurface __iomem *Surface =
1894 	(RivaSurface __iomem *)&(chip->FIFO[0x0000E000/4]);
1895 
1896     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000003);
1897     NV_WR32(&Surface->Offset, 0, surf0);
1898     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000004);
1899     NV_WR32(&Surface->Offset, 0, surf1);
1900     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000014);
1901 }
1902 static void nv10SetSurfaces2D
1903 (
1904     RIVA_HW_INST *chip,
1905     unsigned     surf0,
1906     unsigned     surf1
1907 )
1908 {
1909     RivaSurface __iomem *Surface =
1910 	(RivaSurface __iomem *)&(chip->FIFO[0x0000E000/4]);
1911 
1912     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000003);
1913     NV_WR32(&Surface->Offset, 0, surf0);
1914     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000004);
1915     NV_WR32(&Surface->Offset, 0, surf1);
1916     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000014);
1917 }
1918 static void nv3SetSurfaces3D
1919 (
1920     RIVA_HW_INST *chip,
1921     unsigned     surf0,
1922     unsigned     surf1
1923 )
1924 {
1925     RivaSurface __iomem *Surface =
1926 	(RivaSurface __iomem *)&(chip->FIFO[0x0000E000/4]);
1927 
1928     RIVA_FIFO_FREE(*chip,Tri03,5);
1929     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000005);
1930     NV_WR32(&Surface->Offset, 0, surf0);
1931     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000006);
1932     NV_WR32(&Surface->Offset, 0, surf1);
1933     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000013);
1934 }
1935 static void nv4SetSurfaces3D
1936 (
1937     RIVA_HW_INST *chip,
1938     unsigned     surf0,
1939     unsigned     surf1
1940 )
1941 {
1942     RivaSurface __iomem *Surface =
1943 	(RivaSurface __iomem *)&(chip->FIFO[0x0000E000/4]);
1944 
1945     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000005);
1946     NV_WR32(&Surface->Offset, 0, surf0);
1947     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000006);
1948     NV_WR32(&Surface->Offset, 0, surf1);
1949     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000014);
1950 }
1951 static void nv10SetSurfaces3D
1952 (
1953     RIVA_HW_INST *chip,
1954     unsigned     surf0,
1955     unsigned     surf1
1956 )
1957 {
1958     RivaSurface3D __iomem *Surfaces3D =
1959 	(RivaSurface3D __iomem *)&(chip->FIFO[0x0000E000/4]);
1960 
1961     RIVA_FIFO_FREE(*chip,Tri03,4);
1962     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000007);
1963     NV_WR32(&Surfaces3D->RenderBufferOffset, 0, surf0);
1964     NV_WR32(&Surfaces3D->ZBufferOffset, 0, surf1);
1965     NV_WR32(&chip->FIFO[0x00003800], 0, 0x80000014);
1966 }
1967 
1968 /****************************************************************************\
1969 *                                                                            *
1970 *                      Probe RIVA Chip Configuration                         *
1971 *                                                                            *
1972 \****************************************************************************/
1973 
1974 static void nv3GetConfig
1975 (
1976     RIVA_HW_INST *chip
1977 )
1978 {
1979     /*
1980      * Fill in chip configuration.
1981      */
1982     if (NV_RD32(&chip->PFB[0x00000000/4], 0) & 0x00000020)
1983     {
1984         if (((NV_RD32(chip->PMC, 0x00000000) & 0xF0) == 0x20)
1985          && ((NV_RD32(chip->PMC, 0x00000000) & 0x0F) >= 0x02))
1986         {
1987             /*
1988              * SDRAM 128 ZX.
1989              */
1990             chip->RamBandwidthKBytesPerSec = 800000;
1991             switch (NV_RD32(chip->PFB, 0x00000000) & 0x03)
1992             {
1993                 case 2:
1994                     chip->RamAmountKBytes = 1024 * 4;
1995                     break;
1996                 case 1:
1997                     chip->RamAmountKBytes = 1024 * 2;
1998                     break;
1999                 default:
2000                     chip->RamAmountKBytes = 1024 * 8;
2001                     break;
2002             }
2003         }
2004         else
2005         {
2006             chip->RamBandwidthKBytesPerSec = 1000000;
2007             chip->RamAmountKBytes          = 1024 * 8;
2008         }
2009     }
2010     else
2011     {
2012         /*
2013          * SGRAM 128.
2014          */
2015         chip->RamBandwidthKBytesPerSec = 1000000;
2016         switch (NV_RD32(chip->PFB, 0x00000000) & 0x00000003)
2017         {
2018             case 0:
2019                 chip->RamAmountKBytes = 1024 * 8;
2020                 break;
2021             case 2:
2022                 chip->RamAmountKBytes = 1024 * 4;
2023                 break;
2024             default:
2025                 chip->RamAmountKBytes = 1024 * 2;
2026                 break;
2027         }
2028     }
2029     chip->CrystalFreqKHz   = (NV_RD32(chip->PEXTDEV, 0x00000000) & 0x00000040) ? 14318 : 13500;
2030     chip->CURSOR           = &(chip->PRAMIN[0x00008000/4 - 0x0800/4]);
2031     chip->VBlankBit        = 0x00000100;
2032     chip->MaxVClockFreqKHz = 256000;
2033     /*
2034      * Set chip functions.
2035      */
2036     chip->Busy            = nv3Busy;
2037     chip->ShowHideCursor  = ShowHideCursor;
2038     chip->LoadStateExt    = LoadStateExt;
2039     chip->UnloadStateExt  = UnloadStateExt;
2040     chip->SetStartAddress = SetStartAddress3;
2041     chip->SetSurfaces2D   = nv3SetSurfaces2D;
2042     chip->SetSurfaces3D   = nv3SetSurfaces3D;
2043     chip->LockUnlock      = nv3LockUnlock;
2044 }
2045 static void nv4GetConfig
2046 (
2047     RIVA_HW_INST *chip
2048 )
2049 {
2050     /*
2051      * Fill in chip configuration.
2052      */
2053     if (NV_RD32(chip->PFB, 0x00000000) & 0x00000100)
2054     {
2055         chip->RamAmountKBytes = ((NV_RD32(chip->PFB, 0x00000000) >> 12) & 0x0F) * 1024 * 2
2056                               + 1024 * 2;
2057     }
2058     else
2059     {
2060         switch (NV_RD32(chip->PFB, 0x00000000) & 0x00000003)
2061         {
2062             case 0:
2063                 chip->RamAmountKBytes = 1024 * 32;
2064                 break;
2065             case 1:
2066                 chip->RamAmountKBytes = 1024 * 4;
2067                 break;
2068             case 2:
2069                 chip->RamAmountKBytes = 1024 * 8;
2070                 break;
2071             case 3:
2072             default:
2073                 chip->RamAmountKBytes = 1024 * 16;
2074                 break;
2075         }
2076     }
2077     switch ((NV_RD32(chip->PFB, 0x00000000) >> 3) & 0x00000003)
2078     {
2079         case 3:
2080             chip->RamBandwidthKBytesPerSec = 800000;
2081             break;
2082         default:
2083             chip->RamBandwidthKBytesPerSec = 1000000;
2084             break;
2085     }
2086     chip->CrystalFreqKHz   = (NV_RD32(chip->PEXTDEV, 0x00000000) & 0x00000040) ? 14318 : 13500;
2087     chip->CURSOR           = &(chip->PRAMIN[0x00010000/4 - 0x0800/4]);
2088     chip->VBlankBit        = 0x00000001;
2089     chip->MaxVClockFreqKHz = 350000;
2090     /*
2091      * Set chip functions.
2092      */
2093     chip->Busy            = nv4Busy;
2094     chip->ShowHideCursor  = ShowHideCursor;
2095     chip->LoadStateExt    = LoadStateExt;
2096     chip->UnloadStateExt  = UnloadStateExt;
2097     chip->SetStartAddress = SetStartAddress;
2098     chip->SetSurfaces2D   = nv4SetSurfaces2D;
2099     chip->SetSurfaces3D   = nv4SetSurfaces3D;
2100     chip->LockUnlock      = nv4LockUnlock;
2101 }
2102 static void nv10GetConfig
2103 (
2104     RIVA_HW_INST *chip,
2105     unsigned int chipset
2106 )
2107 {
2108     struct pci_dev* dev;
2109     u32 amt;
2110 
2111 #ifdef __BIG_ENDIAN
2112     /* turn on big endian register access */
2113     if(!(NV_RD32(chip->PMC, 0x00000004) & 0x01000001))
2114     	NV_WR32(chip->PMC, 0x00000004, 0x01000001);
2115 #endif
2116 
2117     /*
2118      * Fill in chip configuration.
2119      */
2120     if(chipset == NV_CHIP_IGEFORCE2) {
2121         dev = pci_get_bus_and_slot(0, 1);
2122         pci_read_config_dword(dev, 0x7C, &amt);
2123         pci_dev_put(dev);
2124         chip->RamAmountKBytes = (((amt >> 6) & 31) + 1) * 1024;
2125     } else if(chipset == NV_CHIP_0x01F0) {
2126         dev = pci_get_bus_and_slot(0, 1);
2127         pci_read_config_dword(dev, 0x84, &amt);
2128         pci_dev_put(dev);
2129         chip->RamAmountKBytes = (((amt >> 4) & 127) + 1) * 1024;
2130     } else {
2131         switch ((NV_RD32(chip->PFB, 0x0000020C) >> 20) & 0x000000FF)
2132         {
2133             case 0x02:
2134                 chip->RamAmountKBytes = 1024 * 2;
2135                 break;
2136             case 0x04:
2137                 chip->RamAmountKBytes = 1024 * 4;
2138                 break;
2139             case 0x08:
2140                 chip->RamAmountKBytes = 1024 * 8;
2141                 break;
2142             case 0x10:
2143                 chip->RamAmountKBytes = 1024 * 16;
2144                 break;
2145             case 0x20:
2146                 chip->RamAmountKBytes = 1024 * 32;
2147                 break;
2148             case 0x40:
2149                 chip->RamAmountKBytes = 1024 * 64;
2150                 break;
2151             case 0x80:
2152                 chip->RamAmountKBytes = 1024 * 128;
2153                 break;
2154             default:
2155                 chip->RamAmountKBytes = 1024 * 16;
2156                 break;
2157         }
2158     }
2159     switch ((NV_RD32(chip->PFB, 0x00000000) >> 3) & 0x00000003)
2160     {
2161         case 3:
2162             chip->RamBandwidthKBytesPerSec = 800000;
2163             break;
2164         default:
2165             chip->RamBandwidthKBytesPerSec = 1000000;
2166             break;
2167     }
2168     chip->CrystalFreqKHz = (NV_RD32(chip->PEXTDEV, 0x0000) & (1 << 6)) ?
2169 	14318 : 13500;
2170 
2171     switch (chipset & 0x0ff0) {
2172     case 0x0170:
2173     case 0x0180:
2174     case 0x01F0:
2175     case 0x0250:
2176     case 0x0280:
2177     case 0x0300:
2178     case 0x0310:
2179     case 0x0320:
2180     case 0x0330:
2181     case 0x0340:
2182        if(NV_RD32(chip->PEXTDEV, 0x0000) & (1 << 22))
2183            chip->CrystalFreqKHz = 27000;
2184        break;
2185     default:
2186        break;
2187     }
2188 
2189     chip->CursorStart      = (chip->RamAmountKBytes - 128) * 1024;
2190     chip->CURSOR           = NULL;  /* can't set this here */
2191     chip->VBlankBit        = 0x00000001;
2192     chip->MaxVClockFreqKHz = 350000;
2193     /*
2194      * Set chip functions.
2195      */
2196     chip->Busy            = nv10Busy;
2197     chip->ShowHideCursor  = ShowHideCursor;
2198     chip->LoadStateExt    = LoadStateExt;
2199     chip->UnloadStateExt  = UnloadStateExt;
2200     chip->SetStartAddress = SetStartAddress;
2201     chip->SetSurfaces2D   = nv10SetSurfaces2D;
2202     chip->SetSurfaces3D   = nv10SetSurfaces3D;
2203     chip->LockUnlock      = nv4LockUnlock;
2204 
2205     switch(chipset & 0x0ff0) {
2206     case 0x0110:
2207     case 0x0170:
2208     case 0x0180:
2209     case 0x01F0:
2210     case 0x0250:
2211     case 0x0280:
2212     case 0x0300:
2213     case 0x0310:
2214     case 0x0320:
2215     case 0x0330:
2216     case 0x0340:
2217         chip->twoHeads = TRUE;
2218         break;
2219     default:
2220         chip->twoHeads = FALSE;
2221         break;
2222     }
2223 }
2224 int RivaGetConfig
2225 (
2226     RIVA_HW_INST *chip,
2227     unsigned int chipset
2228 )
2229 {
2230     /*
2231      * Save this so future SW know whats it's dealing with.
2232      */
2233     chip->Version = RIVA_SW_VERSION;
2234     /*
2235      * Chip specific configuration.
2236      */
2237     switch (chip->Architecture)
2238     {
2239         case NV_ARCH_03:
2240             nv3GetConfig(chip);
2241             break;
2242         case NV_ARCH_04:
2243             nv4GetConfig(chip);
2244             break;
2245         case NV_ARCH_10:
2246         case NV_ARCH_20:
2247         case NV_ARCH_30:
2248             nv10GetConfig(chip, chipset);
2249             break;
2250         default:
2251             return (-1);
2252     }
2253     chip->Chipset = chipset;
2254     /*
2255      * Fill in FIFO pointers.
2256      */
2257     chip->Rop    = (RivaRop __iomem         *)&(chip->FIFO[0x00000000/4]);
2258     chip->Clip   = (RivaClip __iomem        *)&(chip->FIFO[0x00002000/4]);
2259     chip->Patt   = (RivaPattern __iomem     *)&(chip->FIFO[0x00004000/4]);
2260     chip->Pixmap = (RivaPixmap __iomem      *)&(chip->FIFO[0x00006000/4]);
2261     chip->Blt    = (RivaScreenBlt __iomem   *)&(chip->FIFO[0x00008000/4]);
2262     chip->Bitmap = (RivaBitmap __iomem      *)&(chip->FIFO[0x0000A000/4]);
2263     chip->Line   = (RivaLine __iomem        *)&(chip->FIFO[0x0000C000/4]);
2264     chip->Tri03  = (RivaTexturedTriangle03 __iomem *)&(chip->FIFO[0x0000E000/4]);
2265     return (0);
2266 }
2267 
2268