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