1 /* r128_cce.c -- ATI Rage 128 driver -*- linux-c -*-
2 * Created: Wed Apr 5 19:24:19 2000 by kevin@precisioninsight.com
4 * Copyright 2000 Precision Insight, Inc., Cedar Park, Texas.
5 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice (including the next
16 * paragraph) shall be included in all copies or substantial portions of the
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 * DEALINGS IN THE SOFTWARE.
28 * Gareth Hughes <gareth@valinux.com>
37 #define R128_FIFO_DEBUG 0
39 /* CCE microcode (from ATI) */
40 static u32 r128_cce_microcode[] = {
41 0, 276838400, 0, 268449792, 2, 142, 2, 145, 0, 1076765731, 0,
42 1617039951, 0, 774592877, 0, 1987540286, 0, 2307490946U, 0,
43 599558925, 0, 589505315, 0, 596487092, 0, 589505315, 1,
44 11544576, 1, 206848, 1, 311296, 1, 198656, 2, 912273422, 11,
45 262144, 0, 0, 1, 33559837, 1, 7438, 1, 14809, 1, 6615, 12, 28,
46 1, 6614, 12, 28, 2, 23, 11, 18874368, 0, 16790922, 1, 409600, 9,
47 30, 1, 147854772, 16, 420483072, 3, 8192, 0, 10240, 1, 198656,
48 1, 15630, 1, 51200, 10, 34858, 9, 42, 1, 33559823, 2, 10276, 1,
49 15717, 1, 15718, 2, 43, 1, 15936948, 1, 570480831, 1, 14715071,
50 12, 322123831, 1, 33953125, 12, 55, 1, 33559908, 1, 15718, 2,
51 46, 4, 2099258, 1, 526336, 1, 442623, 4, 4194365, 1, 509952, 1,
52 459007, 3, 0, 12, 92, 2, 46, 12, 176, 1, 15734, 1, 206848, 1,
53 18432, 1, 133120, 1, 100670734, 1, 149504, 1, 165888, 1,
54 15975928, 1, 1048576, 6, 3145806, 1, 15715, 16, 2150645232U, 2,
55 268449859, 2, 10307, 12, 176, 1, 15734, 1, 15735, 1, 15630, 1,
56 15631, 1, 5253120, 6, 3145810, 16, 2150645232U, 1, 15864, 2, 82,
57 1, 343310, 1, 1064207, 2, 3145813, 1, 15728, 1, 7817, 1, 15729,
58 3, 15730, 12, 92, 2, 98, 1, 16168, 1, 16167, 1, 16002, 1, 16008,
59 1, 15974, 1, 15975, 1, 15990, 1, 15976, 1, 15977, 1, 15980, 0,
60 15981, 1, 10240, 1, 5253120, 1, 15720, 1, 198656, 6, 110, 1,
61 180224, 1, 103824738, 2, 112, 2, 3145839, 0, 536885440, 1,
62 114880, 14, 125, 12, 206975, 1, 33559995, 12, 198784, 0,
63 33570236, 1, 15803, 0, 15804, 3, 294912, 1, 294912, 3, 442370,
64 1, 11544576, 0, 811612160, 1, 12593152, 1, 11536384, 1,
65 14024704, 7, 310382726, 0, 10240, 1, 14796, 1, 14797, 1, 14793,
66 1, 14794, 0, 14795, 1, 268679168, 1, 9437184, 1, 268449792, 1,
67 198656, 1, 9452827, 1, 1075854602, 1, 1075854603, 1, 557056, 1,
68 114880, 14, 159, 12, 198784, 1, 1109409213, 12, 198783, 1,
69 1107312059, 12, 198784, 1, 1109409212, 2, 162, 1, 1075854781, 1,
70 1073757627, 1, 1075854780, 1, 540672, 1, 10485760, 6, 3145894,
71 16, 274741248, 9, 168, 3, 4194304, 3, 4209949, 0, 0, 0, 256, 14,
72 174, 1, 114857, 1, 33560007, 12, 176, 0, 10240, 1, 114858, 1,
73 33560018, 1, 114857, 3, 33560007, 1, 16008, 1, 114874, 1,
74 33560360, 1, 114875, 1, 33560154, 0, 15963, 0, 256, 0, 4096, 1,
75 409611, 9, 188, 0, 10240, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
76 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
77 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
78 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
79 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
80 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
81 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
84 int R128_READ_PLL(drm_device_t *dev, int addr)
86 drm_r128_private_t *dev_priv = dev->dev_private;
88 R128_WRITE8(R128_CLOCK_CNTL_INDEX, addr & 0x1f);
89 return R128_READ(R128_CLOCK_CNTL_DATA);
93 static void r128_status( drm_r128_private_t *dev_priv )
95 printk( "GUI_STAT = 0x%08x\n",
96 (unsigned int)R128_READ( R128_GUI_STAT ) );
97 printk( "PM4_STAT = 0x%08x\n",
98 (unsigned int)R128_READ( R128_PM4_STAT ) );
99 printk( "PM4_BUFFER_DL_WPTR = 0x%08x\n",
100 (unsigned int)R128_READ( R128_PM4_BUFFER_DL_WPTR ) );
101 printk( "PM4_BUFFER_DL_RPTR = 0x%08x\n",
102 (unsigned int)R128_READ( R128_PM4_BUFFER_DL_RPTR ) );
103 printk( "PM4_MICRO_CNTL = 0x%08x\n",
104 (unsigned int)R128_READ( R128_PM4_MICRO_CNTL ) );
105 printk( "PM4_BUFFER_CNTL = 0x%08x\n",
106 (unsigned int)R128_READ( R128_PM4_BUFFER_CNTL ) );
111 /* ================================================================
112 * Engine, FIFO control
115 static int r128_do_pixcache_flush( drm_r128_private_t *dev_priv )
120 tmp = R128_READ( R128_PC_NGUI_CTLSTAT ) | R128_PC_FLUSH_ALL;
121 R128_WRITE( R128_PC_NGUI_CTLSTAT, tmp );
123 for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
124 if ( !(R128_READ( R128_PC_NGUI_CTLSTAT ) & R128_PC_BUSY) ) {
131 DRM_ERROR( "failed!\n" );
133 return DRM_ERR(EBUSY);
136 static int r128_do_wait_for_fifo( drm_r128_private_t *dev_priv, int entries )
140 for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
141 int slots = R128_READ( R128_GUI_STAT ) & R128_GUI_FIFOCNT_MASK;
142 if ( slots >= entries ) return 0;
147 DRM_ERROR( "failed!\n" );
149 return DRM_ERR(EBUSY);
152 static int r128_do_wait_for_idle( drm_r128_private_t *dev_priv )
156 ret = r128_do_wait_for_fifo( dev_priv, 64 );
157 if ( ret ) return ret;
159 for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
160 if ( !(R128_READ( R128_GUI_STAT ) & R128_GUI_ACTIVE) ) {
161 r128_do_pixcache_flush( dev_priv );
168 DRM_ERROR( "failed!\n" );
170 return DRM_ERR(EBUSY);
174 /* ================================================================
175 * CCE control, initialization
178 /* Load the microcode for the CCE */
179 static void r128_cce_load_microcode( drm_r128_private_t *dev_priv )
185 r128_do_wait_for_idle( dev_priv );
187 R128_WRITE( R128_PM4_MICROCODE_ADDR, 0 );
188 for ( i = 0 ; i < 256 ; i++ ) {
189 R128_WRITE( R128_PM4_MICROCODE_DATAH,
190 r128_cce_microcode[i * 2] );
191 R128_WRITE( R128_PM4_MICROCODE_DATAL,
192 r128_cce_microcode[i * 2 + 1] );
196 /* Flush any pending commands to the CCE. This should only be used just
197 * prior to a wait for idle, as it informs the engine that the command
200 static void r128_do_cce_flush( drm_r128_private_t *dev_priv )
204 tmp = R128_READ( R128_PM4_BUFFER_DL_WPTR ) | R128_PM4_BUFFER_DL_DONE;
205 R128_WRITE( R128_PM4_BUFFER_DL_WPTR, tmp );
208 /* Wait for the CCE to go idle.
210 int r128_do_cce_idle( drm_r128_private_t *dev_priv )
214 for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
215 if ( GET_RING_HEAD( &dev_priv->ring ) == dev_priv->ring.tail ) {
216 int pm4stat = R128_READ( R128_PM4_STAT );
217 if ( ( (pm4stat & R128_PM4_FIFOCNT_MASK) >=
218 dev_priv->cce_fifo_size ) &&
219 !(pm4stat & (R128_PM4_BUSY |
220 R128_PM4_GUI_ACTIVE)) ) {
221 return r128_do_pixcache_flush( dev_priv );
228 DRM_ERROR( "failed!\n" );
229 r128_status( dev_priv );
231 return DRM_ERR(EBUSY);
234 /* Start the Concurrent Command Engine.
236 static void r128_do_cce_start( drm_r128_private_t *dev_priv )
238 r128_do_wait_for_idle( dev_priv );
240 R128_WRITE( R128_PM4_BUFFER_CNTL,
241 dev_priv->cce_mode | dev_priv->ring.size_l2qw );
242 R128_READ( R128_PM4_BUFFER_ADDR ); /* as per the sample code */
243 R128_WRITE( R128_PM4_MICRO_CNTL, R128_PM4_MICRO_FREERUN );
245 dev_priv->cce_running = 1;
248 /* Reset the Concurrent Command Engine. This will not flush any pending
249 * commands, so you must wait for the CCE command stream to complete
250 * before calling this routine.
252 static void r128_do_cce_reset( drm_r128_private_t *dev_priv )
254 R128_WRITE( R128_PM4_BUFFER_DL_WPTR, 0 );
255 R128_WRITE( R128_PM4_BUFFER_DL_RPTR, 0 );
256 SET_RING_HEAD( &dev_priv->ring, 0 );
257 dev_priv->ring.tail = 0;
260 /* Stop the Concurrent Command Engine. This will not flush any pending
261 * commands, so you must flush the command stream and wait for the CCE
262 * to go idle before calling this routine.
264 static void r128_do_cce_stop( drm_r128_private_t *dev_priv )
266 R128_WRITE( R128_PM4_MICRO_CNTL, 0 );
267 R128_WRITE( R128_PM4_BUFFER_CNTL, R128_PM4_NONPM4 );
269 dev_priv->cce_running = 0;
272 /* Reset the engine. This will stop the CCE if it is running.
274 static int r128_do_engine_reset( drm_device_t *dev )
276 drm_r128_private_t *dev_priv = dev->dev_private;
277 u32 clock_cntl_index, mclk_cntl, gen_reset_cntl;
279 r128_do_pixcache_flush( dev_priv );
281 clock_cntl_index = R128_READ( R128_CLOCK_CNTL_INDEX );
282 mclk_cntl = R128_READ_PLL( dev, R128_MCLK_CNTL );
284 R128_WRITE_PLL( R128_MCLK_CNTL,
285 mclk_cntl | R128_FORCE_GCP | R128_FORCE_PIPE3D_CP );
287 gen_reset_cntl = R128_READ( R128_GEN_RESET_CNTL );
289 /* Taken from the sample code - do not change */
290 R128_WRITE( R128_GEN_RESET_CNTL,
291 gen_reset_cntl | R128_SOFT_RESET_GUI );
292 R128_READ( R128_GEN_RESET_CNTL );
293 R128_WRITE( R128_GEN_RESET_CNTL,
294 gen_reset_cntl & ~R128_SOFT_RESET_GUI );
295 R128_READ( R128_GEN_RESET_CNTL );
297 R128_WRITE_PLL( R128_MCLK_CNTL, mclk_cntl );
298 R128_WRITE( R128_CLOCK_CNTL_INDEX, clock_cntl_index );
299 R128_WRITE( R128_GEN_RESET_CNTL, gen_reset_cntl );
301 /* Reset the CCE ring */
302 r128_do_cce_reset( dev_priv );
304 /* The CCE is no longer running after an engine reset */
305 dev_priv->cce_running = 0;
307 /* Reset any pending vertex, indirect buffers */
308 r128_freelist_reset( dev );
313 static void r128_cce_init_ring_buffer( drm_device_t *dev,
314 drm_r128_private_t *dev_priv )
321 /* The manual (p. 2) says this address is in "VM space". This
322 * means it's an offset from the start of AGP space.
324 #if __REALLY_HAVE_AGP
325 if ( !dev_priv->is_pci )
326 ring_start = dev_priv->cce_ring->offset - dev->agp->base;
329 ring_start = dev_priv->cce_ring->offset - dev->sg->handle;
331 R128_WRITE( R128_PM4_BUFFER_OFFSET, ring_start | R128_AGP_OFFSET );
333 R128_WRITE( R128_PM4_BUFFER_DL_WPTR, 0 );
334 R128_WRITE( R128_PM4_BUFFER_DL_RPTR, 0 );
336 /* DL_RPTR_ADDR is a physical address in AGP space. */
337 SET_RING_HEAD( &dev_priv->ring, 0 );
339 if ( !dev_priv->is_pci ) {
340 R128_WRITE( R128_PM4_BUFFER_DL_RPTR_ADDR,
341 dev_priv->ring_rptr->offset );
343 drm_sg_mem_t *entry = dev->sg;
344 unsigned long tmp_ofs, page_ofs;
346 tmp_ofs = dev_priv->ring_rptr->offset - dev->sg->handle;
347 page_ofs = tmp_ofs >> PAGE_SHIFT;
349 R128_WRITE( R128_PM4_BUFFER_DL_RPTR_ADDR,
350 entry->busaddr[page_ofs]);
351 DRM_DEBUG( "ring rptr: offset=0x%08lx handle=0x%08lx\n",
352 (unsigned long) entry->busaddr[page_ofs],
353 entry->handle + tmp_ofs );
356 /* Set watermark control */
357 R128_WRITE( R128_PM4_BUFFER_WM_CNTL,
358 ((R128_WATERMARK_L/4) << R128_WMA_SHIFT)
359 | ((R128_WATERMARK_M/4) << R128_WMB_SHIFT)
360 | ((R128_WATERMARK_N/4) << R128_WMC_SHIFT)
361 | ((R128_WATERMARK_K/64) << R128_WB_WM_SHIFT) );
363 /* Force read. Why? Because it's in the examples... */
364 R128_READ( R128_PM4_BUFFER_ADDR );
366 /* Turn on bus mastering */
367 tmp = R128_READ( R128_BUS_CNTL ) & ~R128_BUS_MASTER_DIS;
368 R128_WRITE( R128_BUS_CNTL, tmp );
371 static int r128_do_init_cce( drm_device_t *dev, drm_r128_init_t *init )
373 drm_r128_private_t *dev_priv;
377 dev_priv = DRM(alloc)( sizeof(drm_r128_private_t), DRM_MEM_DRIVER );
378 if ( dev_priv == NULL )
379 return DRM_ERR(ENOMEM);
381 memset( dev_priv, 0, sizeof(drm_r128_private_t) );
383 dev_priv->is_pci = init->is_pci;
385 if ( dev_priv->is_pci && !dev->sg ) {
386 DRM_ERROR( "PCI GART memory not allocated!\n" );
387 dev->dev_private = (void *)dev_priv;
388 r128_do_cleanup_cce( dev );
389 return DRM_ERR(EINVAL);
392 dev_priv->usec_timeout = init->usec_timeout;
393 if ( dev_priv->usec_timeout < 1 ||
394 dev_priv->usec_timeout > R128_MAX_USEC_TIMEOUT ) {
395 DRM_DEBUG( "TIMEOUT problem!\n" );
396 dev->dev_private = (void *)dev_priv;
397 r128_do_cleanup_cce( dev );
398 return DRM_ERR(EINVAL);
401 dev_priv->cce_mode = init->cce_mode;
403 /* GH: Simple idle check.
405 atomic_set( &dev_priv->idle_count, 0 );
407 /* We don't support anything other than bus-mastering ring mode,
408 * but the ring can be in either AGP or PCI space for the ring
411 if ( ( init->cce_mode != R128_PM4_192BM ) &&
412 ( init->cce_mode != R128_PM4_128BM_64INDBM ) &&
413 ( init->cce_mode != R128_PM4_64BM_128INDBM ) &&
414 ( init->cce_mode != R128_PM4_64BM_64VCBM_64INDBM ) ) {
415 DRM_DEBUG( "Bad cce_mode!\n" );
416 dev->dev_private = (void *)dev_priv;
417 r128_do_cleanup_cce( dev );
418 return DRM_ERR(EINVAL);
421 switch ( init->cce_mode ) {
422 case R128_PM4_NONPM4:
423 dev_priv->cce_fifo_size = 0;
425 case R128_PM4_192PIO:
427 dev_priv->cce_fifo_size = 192;
429 case R128_PM4_128PIO_64INDBM:
430 case R128_PM4_128BM_64INDBM:
431 dev_priv->cce_fifo_size = 128;
433 case R128_PM4_64PIO_128INDBM:
434 case R128_PM4_64BM_128INDBM:
435 case R128_PM4_64PIO_64VCBM_64INDBM:
436 case R128_PM4_64BM_64VCBM_64INDBM:
437 case R128_PM4_64PIO_64VCPIO_64INDPIO:
438 dev_priv->cce_fifo_size = 64;
442 switch ( init->fb_bpp ) {
444 dev_priv->color_fmt = R128_DATATYPE_RGB565;
448 dev_priv->color_fmt = R128_DATATYPE_ARGB8888;
451 dev_priv->front_offset = init->front_offset;
452 dev_priv->front_pitch = init->front_pitch;
453 dev_priv->back_offset = init->back_offset;
454 dev_priv->back_pitch = init->back_pitch;
456 switch ( init->depth_bpp ) {
458 dev_priv->depth_fmt = R128_DATATYPE_RGB565;
463 dev_priv->depth_fmt = R128_DATATYPE_ARGB8888;
466 dev_priv->depth_offset = init->depth_offset;
467 dev_priv->depth_pitch = init->depth_pitch;
468 dev_priv->span_offset = init->span_offset;
470 dev_priv->front_pitch_offset_c = (((dev_priv->front_pitch/8) << 21) |
471 (dev_priv->front_offset >> 5));
472 dev_priv->back_pitch_offset_c = (((dev_priv->back_pitch/8) << 21) |
473 (dev_priv->back_offset >> 5));
474 dev_priv->depth_pitch_offset_c = (((dev_priv->depth_pitch/8) << 21) |
475 (dev_priv->depth_offset >> 5) |
477 dev_priv->span_pitch_offset_c = (((dev_priv->depth_pitch/8) << 21) |
478 (dev_priv->span_offset >> 5));
482 if(!dev_priv->sarea) {
483 DRM_ERROR("could not find sarea!\n");
484 dev->dev_private = (void *)dev_priv;
485 r128_do_cleanup_cce( dev );
486 return DRM_ERR(EINVAL);
489 DRM_FIND_MAP( dev_priv->fb, init->fb_offset );
491 DRM_ERROR("could not find framebuffer!\n");
492 dev->dev_private = (void *)dev_priv;
493 r128_do_cleanup_cce( dev );
494 return DRM_ERR(EINVAL);
496 DRM_FIND_MAP( dev_priv->mmio, init->mmio_offset );
497 if(!dev_priv->mmio) {
498 DRM_ERROR("could not find mmio region!\n");
499 dev->dev_private = (void *)dev_priv;
500 r128_do_cleanup_cce( dev );
501 return DRM_ERR(EINVAL);
503 DRM_FIND_MAP( dev_priv->cce_ring, init->ring_offset );
504 if(!dev_priv->cce_ring) {
505 DRM_ERROR("could not find cce ring region!\n");
506 dev->dev_private = (void *)dev_priv;
507 r128_do_cleanup_cce( dev );
508 return DRM_ERR(EINVAL);
510 DRM_FIND_MAP( dev_priv->ring_rptr, init->ring_rptr_offset );
511 if(!dev_priv->ring_rptr) {
512 DRM_ERROR("could not find ring read pointer!\n");
513 dev->dev_private = (void *)dev_priv;
514 r128_do_cleanup_cce( dev );
515 return DRM_ERR(EINVAL);
517 DRM_FIND_MAP( dev_priv->buffers, init->buffers_offset );
518 if(!dev_priv->buffers) {
519 DRM_ERROR("could not find dma buffer region!\n");
520 dev->dev_private = (void *)dev_priv;
521 r128_do_cleanup_cce( dev );
522 return DRM_ERR(EINVAL);
525 if ( !dev_priv->is_pci ) {
526 DRM_FIND_MAP( dev_priv->agp_textures,
527 init->agp_textures_offset );
528 if(!dev_priv->agp_textures) {
529 DRM_ERROR("could not find agp texture region!\n");
530 dev->dev_private = (void *)dev_priv;
531 r128_do_cleanup_cce( dev );
532 return DRM_ERR(EINVAL);
536 dev_priv->sarea_priv =
537 (drm_r128_sarea_t *)((u8 *)dev_priv->sarea->handle +
538 init->sarea_priv_offset);
540 #if __REALLY_HAVE_AGP
541 if ( !dev_priv->is_pci ) {
542 DRM_IOREMAP( dev_priv->cce_ring, dev );
543 DRM_IOREMAP( dev_priv->ring_rptr, dev );
544 DRM_IOREMAP( dev_priv->buffers, dev );
545 if(!dev_priv->cce_ring->handle ||
546 !dev_priv->ring_rptr->handle ||
547 !dev_priv->buffers->handle) {
548 DRM_ERROR("Could not ioremap agp regions!\n");
549 dev->dev_private = (void *)dev_priv;
550 r128_do_cleanup_cce( dev );
551 return DRM_ERR(ENOMEM);
556 dev_priv->cce_ring->handle =
557 (void *)dev_priv->cce_ring->offset;
558 dev_priv->ring_rptr->handle =
559 (void *)dev_priv->ring_rptr->offset;
560 dev_priv->buffers->handle = (void *)dev_priv->buffers->offset;
563 #if __REALLY_HAVE_AGP
564 if ( !dev_priv->is_pci )
565 dev_priv->cce_buffers_offset = dev->agp->base;
568 dev_priv->cce_buffers_offset = dev->sg->handle;
570 dev_priv->ring.head = ((__volatile__ u32 *)
571 dev_priv->ring_rptr->handle);
573 dev_priv->ring.start = (u32 *)dev_priv->cce_ring->handle;
574 dev_priv->ring.end = ((u32 *)dev_priv->cce_ring->handle
575 + init->ring_size / sizeof(u32));
576 dev_priv->ring.size = init->ring_size;
577 dev_priv->ring.size_l2qw = DRM(order)( init->ring_size / 8 );
579 dev_priv->ring.tail_mask =
580 (dev_priv->ring.size / sizeof(u32)) - 1;
582 dev_priv->ring.high_mark = 128;
583 dev_priv->ring.ring_rptr = dev_priv->ring_rptr;
585 dev_priv->sarea_priv->last_frame = 0;
586 R128_WRITE( R128_LAST_FRAME_REG, dev_priv->sarea_priv->last_frame );
588 dev_priv->sarea_priv->last_dispatch = 0;
589 R128_WRITE( R128_LAST_DISPATCH_REG,
590 dev_priv->sarea_priv->last_dispatch );
593 if ( dev_priv->is_pci ) {
594 if (!DRM(ati_pcigart_init)( dev, &dev_priv->phys_pci_gart,
595 &dev_priv->bus_pci_gart) ) {
596 DRM_ERROR( "failed to init PCI GART!\n" );
597 dev->dev_private = (void *)dev_priv;
598 r128_do_cleanup_cce( dev );
599 return DRM_ERR(ENOMEM);
601 R128_WRITE( R128_PCI_GART_PAGE, dev_priv->bus_pci_gart );
605 r128_cce_init_ring_buffer( dev, dev_priv );
606 r128_cce_load_microcode( dev_priv );
608 dev->dev_private = (void *)dev_priv;
610 r128_do_engine_reset( dev );
615 int r128_do_cleanup_cce( drm_device_t *dev )
619 /* Make sure interrupts are disabled here because the uninstall ioctl
620 * may not have been called from userspace and after dev_private
621 * is freed, it's too late.
623 if ( dev->irq ) DRM(irq_uninstall)(dev);
626 if ( dev->dev_private ) {
627 drm_r128_private_t *dev_priv = dev->dev_private;
629 #if __REALLY_HAVE_AGP
630 if ( !dev_priv->is_pci ) {
631 if ( dev_priv->cce_ring != NULL )
632 DRM_IOREMAPFREE( dev_priv->cce_ring, dev );
633 if ( dev_priv->ring_rptr != NULL )
634 DRM_IOREMAPFREE( dev_priv->ring_rptr, dev );
635 if ( dev_priv->buffers != NULL )
636 DRM_IOREMAPFREE( dev_priv->buffers, dev );
640 if (!DRM(ati_pcigart_cleanup)( dev,
641 dev_priv->phys_pci_gart,
642 dev_priv->bus_pci_gart ))
643 DRM_ERROR( "failed to cleanup PCI GART!\n" );
646 DRM(free)( dev->dev_private, sizeof(drm_r128_private_t),
648 dev->dev_private = NULL;
654 int r128_cce_init( DRM_IOCTL_ARGS )
657 drm_r128_init_t init;
661 LOCK_TEST_WITH_RETURN( dev, filp );
663 DRM_COPY_FROM_USER_IOCTL( init, (drm_r128_init_t *)data, sizeof(init) );
665 switch ( init.func ) {
667 return r128_do_init_cce( dev, &init );
668 case R128_CLEANUP_CCE:
669 return r128_do_cleanup_cce( dev );
672 return DRM_ERR(EINVAL);
675 int r128_cce_start( DRM_IOCTL_ARGS )
678 drm_r128_private_t *dev_priv = dev->dev_private;
681 LOCK_TEST_WITH_RETURN( dev, filp );
683 if ( dev_priv->cce_running || dev_priv->cce_mode == R128_PM4_NONPM4 ) {
684 DRM_DEBUG( "%s while CCE running\n", __FUNCTION__ );
688 r128_do_cce_start( dev_priv );
693 /* Stop the CCE. The engine must have been idled before calling this
696 int r128_cce_stop( DRM_IOCTL_ARGS )
699 drm_r128_private_t *dev_priv = dev->dev_private;
700 drm_r128_cce_stop_t stop;
704 LOCK_TEST_WITH_RETURN( dev, filp );
706 DRM_COPY_FROM_USER_IOCTL(stop, (drm_r128_cce_stop_t *)data, sizeof(stop) );
708 /* Flush any pending CCE commands. This ensures any outstanding
709 * commands are exectuted by the engine before we turn it off.
712 r128_do_cce_flush( dev_priv );
715 /* If we fail to make the engine go idle, we return an error
716 * code so that the DRM ioctl wrapper can try again.
719 ret = r128_do_cce_idle( dev_priv );
720 if ( ret ) return ret;
723 /* Finally, we can turn off the CCE. If the engine isn't idle,
724 * we will get some dropped triangles as they won't be fully
725 * rendered before the CCE is shut down.
727 r128_do_cce_stop( dev_priv );
729 /* Reset the engine */
730 r128_do_engine_reset( dev );
735 /* Just reset the CCE ring. Called as part of an X Server engine reset.
737 int r128_cce_reset( DRM_IOCTL_ARGS )
740 drm_r128_private_t *dev_priv = dev->dev_private;
743 LOCK_TEST_WITH_RETURN( dev, filp );
746 DRM_DEBUG( "%s called before init done\n", __FUNCTION__ );
747 return DRM_ERR(EINVAL);
750 r128_do_cce_reset( dev_priv );
752 /* The CCE is no longer running after an engine reset */
753 dev_priv->cce_running = 0;
758 int r128_cce_idle( DRM_IOCTL_ARGS )
761 drm_r128_private_t *dev_priv = dev->dev_private;
764 LOCK_TEST_WITH_RETURN( dev, filp );
766 if ( dev_priv->cce_running ) {
767 r128_do_cce_flush( dev_priv );
770 return r128_do_cce_idle( dev_priv );
773 int r128_engine_reset( DRM_IOCTL_ARGS )
778 LOCK_TEST_WITH_RETURN( dev, filp );
780 return r128_do_engine_reset( dev );
783 int r128_fullscreen( DRM_IOCTL_ARGS )
785 return DRM_ERR(EINVAL);
789 /* ================================================================
790 * Freelist management
792 #define R128_BUFFER_USED 0xffffffff
793 #define R128_BUFFER_FREE 0
796 static int r128_freelist_init( drm_device_t *dev )
798 drm_device_dma_t *dma = dev->dma;
799 drm_r128_private_t *dev_priv = dev->dev_private;
801 drm_r128_buf_priv_t *buf_priv;
802 drm_r128_freelist_t *entry;
805 dev_priv->head = DRM(alloc)( sizeof(drm_r128_freelist_t),
807 if ( dev_priv->head == NULL )
808 return DRM_ERR(ENOMEM);
810 memset( dev_priv->head, 0, sizeof(drm_r128_freelist_t) );
811 dev_priv->head->age = R128_BUFFER_USED;
813 for ( i = 0 ; i < dma->buf_count ; i++ ) {
814 buf = dma->buflist[i];
815 buf_priv = buf->dev_private;
817 entry = DRM(alloc)( sizeof(drm_r128_freelist_t),
819 if ( !entry ) return DRM_ERR(ENOMEM);
821 entry->age = R128_BUFFER_FREE;
823 entry->prev = dev_priv->head;
824 entry->next = dev_priv->head->next;
826 dev_priv->tail = entry;
828 buf_priv->discard = 0;
829 buf_priv->dispatched = 0;
830 buf_priv->list_entry = entry;
832 dev_priv->head->next = entry;
834 if ( dev_priv->head->next )
835 dev_priv->head->next->prev = entry;
843 drm_buf_t *r128_freelist_get( drm_device_t *dev )
845 drm_device_dma_t *dma = dev->dma;
846 drm_r128_private_t *dev_priv = dev->dev_private;
847 drm_r128_buf_priv_t *buf_priv;
851 /* FIXME: Optimize -- use freelist code */
853 for ( i = 0 ; i < dma->buf_count ; i++ ) {
854 buf = dma->buflist[i];
855 buf_priv = buf->dev_private;
856 if ( buf->filp == 0 )
860 for ( t = 0 ; t < dev_priv->usec_timeout ; t++ ) {
861 u32 done_age = R128_READ( R128_LAST_DISPATCH_REG );
863 for ( i = 0 ; i < dma->buf_count ; i++ ) {
864 buf = dma->buflist[i];
865 buf_priv = buf->dev_private;
866 if ( buf->pending && buf_priv->age <= done_age ) {
867 /* The buffer has been processed, so it
877 DRM_DEBUG( "returning NULL!\n" );
881 void r128_freelist_reset( drm_device_t *dev )
883 drm_device_dma_t *dma = dev->dma;
886 for ( i = 0 ; i < dma->buf_count ; i++ ) {
887 drm_buf_t *buf = dma->buflist[i];
888 drm_r128_buf_priv_t *buf_priv = buf->dev_private;
894 /* ================================================================
895 * CCE command submission
898 int r128_wait_ring( drm_r128_private_t *dev_priv, int n )
900 drm_r128_ring_buffer_t *ring = &dev_priv->ring;
903 for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
904 r128_update_ring_snapshot( ring );
905 if ( ring->space >= n )
910 /* FIXME: This is being ignored... */
911 DRM_ERROR( "failed!\n" );
912 return DRM_ERR(EBUSY);
915 static int r128_cce_get_buffers( DRMFILE filp, drm_device_t *dev, drm_dma_t *d )
920 for ( i = d->granted_count ; i < d->request_count ; i++ ) {
921 buf = r128_freelist_get( dev );
922 if ( !buf ) return DRM_ERR(EAGAIN);
926 if ( DRM_COPY_TO_USER( &d->request_indices[i], &buf->idx,
928 return DRM_ERR(EFAULT);
929 if ( DRM_COPY_TO_USER( &d->request_sizes[i], &buf->total,
930 sizeof(buf->total) ) )
931 return DRM_ERR(EFAULT);
938 int r128_cce_buffers( DRM_IOCTL_ARGS )
941 drm_device_dma_t *dma = dev->dma;
945 LOCK_TEST_WITH_RETURN( dev, filp );
947 DRM_COPY_FROM_USER_IOCTL( d, (drm_dma_t *) data, sizeof(d) );
949 /* Please don't send us buffers.
951 if ( d.send_count != 0 ) {
952 DRM_ERROR( "Process %d trying to send %d buffers via drmDMA\n",
953 DRM_CURRENTPID, d.send_count );
954 return DRM_ERR(EINVAL);
957 /* We'll send you buffers.
959 if ( d.request_count < 0 || d.request_count > dma->buf_count ) {
960 DRM_ERROR( "Process %d trying to get %d buffers (of %d max)\n",
961 DRM_CURRENTPID, d.request_count, dma->buf_count );
962 return DRM_ERR(EINVAL);
967 if ( d.request_count ) {
968 ret = r128_cce_get_buffers( filp, dev, &d );
971 DRM_COPY_TO_USER_IOCTL((drm_dma_t *) data, d, sizeof(d) );