1 /* r128_drv.h -- Private header for r128 driver -*- linux-c -*-
2 * Created: Mon Dec 13 09:51:11 1999 by faith@precisioninsight.com
3 */
4 /*
5 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
6 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
7 * All rights reserved.
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice (including the next
17 * paragraph) shall be included in all copies or substantial portions of the
18 * Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
24 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
25 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26 * DEALINGS IN THE SOFTWARE.
27 *
28 * Authors:
29 * Rickard E. (Rik) Faith <faith@valinux.com>
30 * Kevin E. Martin <martin@valinux.com>
31 * Gareth Hughes <gareth@valinux.com>
32 * Michel D�zer <daenzerm@student.ethz.ch>
33 */
34
35 #ifndef __R128_DRV_H__
36 #define __R128_DRV_H__
37
38 #include <drm/ati_pcigart.h>
39 #include <drm/drm_legacy.h>
40
41 /* General customization:
42 */
43 #define DRIVER_AUTHOR "Gareth Hughes, VA Linux Systems Inc."
44
45 #define DRIVER_NAME "r128"
46 #define DRIVER_DESC "ATI Rage 128"
47 #define DRIVER_DATE "20030725"
48
49 /* Interface history:
50 *
51 * ?? - ??
52 * 2.4 - Add support for ycbcr textures (no new ioctls)
53 * 2.5 - Add FLIP ioctl, disable FULLSCREEN.
54 */
55 #define DRIVER_MAJOR 2
56 #define DRIVER_MINOR 5
57 #define DRIVER_PATCHLEVEL 0
58
59 #define GET_RING_HEAD(dev_priv) R128_READ(R128_PM4_BUFFER_DL_RPTR)
60
61 typedef struct drm_r128_freelist {
62 unsigned int age;
63 struct drm_buf *buf;
64 struct drm_r128_freelist *next;
65 struct drm_r128_freelist *prev;
66 } drm_r128_freelist_t;
67
68 typedef struct drm_r128_ring_buffer {
69 u32 *start;
70 u32 *end;
71 int size;
72 int size_l2qw;
73
74 u32 tail;
75 u32 tail_mask;
76 int space;
77
78 int high_mark;
79 } drm_r128_ring_buffer_t;
80
81 typedef struct drm_r128_private {
82 drm_r128_ring_buffer_t ring;
83 drm_r128_sarea_t *sarea_priv;
84
85 int cce_mode;
86 int cce_fifo_size;
87 int cce_running;
88
89 drm_r128_freelist_t *head;
90 drm_r128_freelist_t *tail;
91
92 int usec_timeout;
93 int is_pci;
94 unsigned long cce_buffers_offset;
95
96 atomic_t idle_count;
97
98 int page_flipping;
99 int current_page;
100 u32 crtc_offset;
101 u32 crtc_offset_cntl;
102
103 atomic_t vbl_received;
104
105 u32 color_fmt;
106 unsigned int front_offset;
107 unsigned int front_pitch;
108 unsigned int back_offset;
109 unsigned int back_pitch;
110
111 u32 depth_fmt;
112 unsigned int depth_offset;
113 unsigned int depth_pitch;
114 unsigned int span_offset;
115
116 u32 front_pitch_offset_c;
117 u32 back_pitch_offset_c;
118 u32 depth_pitch_offset_c;
119 u32 span_pitch_offset_c;
120
121 drm_local_map_t *sarea;
122 drm_local_map_t *mmio;
123 drm_local_map_t *cce_ring;
124 drm_local_map_t *ring_rptr;
125 drm_local_map_t *agp_textures;
126 struct drm_ati_pcigart_info gart_info;
127 } drm_r128_private_t;
128
129 typedef struct drm_r128_buf_priv {
130 u32 age;
131 int prim;
132 int discard;
133 int dispatched;
134 drm_r128_freelist_t *list_entry;
135 } drm_r128_buf_priv_t;
136
137 extern const struct drm_ioctl_desc r128_ioctls[];
138 extern int r128_max_ioctl;
139
140 /* r128_cce.c */
141 extern int r128_cce_init(struct drm_device *dev, void *data, struct drm_file *file_priv);
142 extern int r128_cce_start(struct drm_device *dev, void *data, struct drm_file *file_priv);
143 extern int r128_cce_stop(struct drm_device *dev, void *data, struct drm_file *file_priv);
144 extern int r128_cce_reset(struct drm_device *dev, void *data, struct drm_file *file_priv);
145 extern int r128_cce_idle(struct drm_device *dev, void *data, struct drm_file *file_priv);
146 extern int r128_engine_reset(struct drm_device *dev, void *data, struct drm_file *file_priv);
147 extern int r128_fullscreen(struct drm_device *dev, void *data, struct drm_file *file_priv);
148 extern int r128_cce_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv);
149
150 extern void r128_freelist_reset(struct drm_device *dev);
151
152 extern int r128_wait_ring(drm_r128_private_t *dev_priv, int n);
153
154 extern int r128_do_cce_idle(drm_r128_private_t *dev_priv);
155 extern int r128_do_cleanup_cce(struct drm_device *dev);
156
157 extern int r128_enable_vblank(struct drm_device *dev, unsigned int pipe);
158 extern void r128_disable_vblank(struct drm_device *dev, unsigned int pipe);
159 extern u32 r128_get_vblank_counter(struct drm_device *dev, unsigned int pipe);
160 extern irqreturn_t r128_driver_irq_handler(int irq, void *arg);
161 extern void r128_driver_irq_preinstall(struct drm_device *dev);
162 extern int r128_driver_irq_postinstall(struct drm_device *dev);
163 extern void r128_driver_irq_uninstall(struct drm_device *dev);
164 extern void r128_driver_lastclose(struct drm_device *dev);
165 extern int r128_driver_load(struct drm_device *dev, unsigned long flags);
166 extern void r128_driver_preclose(struct drm_device *dev,
167 struct drm_file *file_priv);
168
169 extern long r128_compat_ioctl(struct file *filp, unsigned int cmd,
170 unsigned long arg);
171
172 /* Register definitions, register access macros and drmAddMap constants
173 * for Rage 128 kernel driver.
174 */
175
176 #define R128_AUX_SC_CNTL 0x1660
177 # define R128_AUX1_SC_EN (1 << 0)
178 # define R128_AUX1_SC_MODE_OR (0 << 1)
179 # define R128_AUX1_SC_MODE_NAND (1 << 1)
180 # define R128_AUX2_SC_EN (1 << 2)
181 # define R128_AUX2_SC_MODE_OR (0 << 3)
182 # define R128_AUX2_SC_MODE_NAND (1 << 3)
183 # define R128_AUX3_SC_EN (1 << 4)
184 # define R128_AUX3_SC_MODE_OR (0 << 5)
185 # define R128_AUX3_SC_MODE_NAND (1 << 5)
186 #define R128_AUX1_SC_LEFT 0x1664
187 #define R128_AUX1_SC_RIGHT 0x1668
188 #define R128_AUX1_SC_TOP 0x166c
189 #define R128_AUX1_SC_BOTTOM 0x1670
190 #define R128_AUX2_SC_LEFT 0x1674
191 #define R128_AUX2_SC_RIGHT 0x1678
192 #define R128_AUX2_SC_TOP 0x167c
193 #define R128_AUX2_SC_BOTTOM 0x1680
194 #define R128_AUX3_SC_LEFT 0x1684
195 #define R128_AUX3_SC_RIGHT 0x1688
196 #define R128_AUX3_SC_TOP 0x168c
197 #define R128_AUX3_SC_BOTTOM 0x1690
198
199 #define R128_BRUSH_DATA0 0x1480
200 #define R128_BUS_CNTL 0x0030
201 # define R128_BUS_MASTER_DIS (1 << 6)
202
203 #define R128_CLOCK_CNTL_INDEX 0x0008
204 #define R128_CLOCK_CNTL_DATA 0x000c
205 # define R128_PLL_WR_EN (1 << 7)
206 #define R128_CONSTANT_COLOR_C 0x1d34
207 #define R128_CRTC_OFFSET 0x0224
208 #define R128_CRTC_OFFSET_CNTL 0x0228
209 # define R128_CRTC_OFFSET_FLIP_CNTL (1 << 16)
210
211 #define R128_DP_GUI_MASTER_CNTL 0x146c
212 # define R128_GMC_SRC_PITCH_OFFSET_CNTL (1 << 0)
213 # define R128_GMC_DST_PITCH_OFFSET_CNTL (1 << 1)
214 # define R128_GMC_BRUSH_SOLID_COLOR (13 << 4)
215 # define R128_GMC_BRUSH_NONE (15 << 4)
216 # define R128_GMC_DST_16BPP (4 << 8)
217 # define R128_GMC_DST_24BPP (5 << 8)
218 # define R128_GMC_DST_32BPP (6 << 8)
219 # define R128_GMC_DST_DATATYPE_SHIFT 8
220 # define R128_GMC_SRC_DATATYPE_COLOR (3 << 12)
221 # define R128_DP_SRC_SOURCE_MEMORY (2 << 24)
222 # define R128_DP_SRC_SOURCE_HOST_DATA (3 << 24)
223 # define R128_GMC_CLR_CMP_CNTL_DIS (1 << 28)
224 # define R128_GMC_AUX_CLIP_DIS (1 << 29)
225 # define R128_GMC_WR_MSK_DIS (1 << 30)
226 # define R128_ROP3_S 0x00cc0000
227 # define R128_ROP3_P 0x00f00000
228 #define R128_DP_WRITE_MASK 0x16cc
229 #define R128_DST_PITCH_OFFSET_C 0x1c80
230 # define R128_DST_TILE (1 << 31)
231
232 #define R128_GEN_INT_CNTL 0x0040
233 # define R128_CRTC_VBLANK_INT_EN (1 << 0)
234 #define R128_GEN_INT_STATUS 0x0044
235 # define R128_CRTC_VBLANK_INT (1 << 0)
236 # define R128_CRTC_VBLANK_INT_AK (1 << 0)
237 #define R128_GEN_RESET_CNTL 0x00f0
238 # define R128_SOFT_RESET_GUI (1 << 0)
239
240 #define R128_GUI_SCRATCH_REG0 0x15e0
241 #define R128_GUI_SCRATCH_REG1 0x15e4
242 #define R128_GUI_SCRATCH_REG2 0x15e8
243 #define R128_GUI_SCRATCH_REG3 0x15ec
244 #define R128_GUI_SCRATCH_REG4 0x15f0
245 #define R128_GUI_SCRATCH_REG5 0x15f4
246
247 #define R128_GUI_STAT 0x1740
248 # define R128_GUI_FIFOCNT_MASK 0x0fff
249 # define R128_GUI_ACTIVE (1 << 31)
250
251 #define R128_MCLK_CNTL 0x000f
252 # define R128_FORCE_GCP (1 << 16)
253 # define R128_FORCE_PIPE3D_CP (1 << 17)
254 # define R128_FORCE_RCP (1 << 18)
255
256 #define R128_PC_GUI_CTLSTAT 0x1748
257 #define R128_PC_NGUI_CTLSTAT 0x0184
258 # define R128_PC_FLUSH_GUI (3 << 0)
259 # define R128_PC_RI_GUI (1 << 2)
260 # define R128_PC_FLUSH_ALL 0x00ff
261 # define R128_PC_BUSY (1 << 31)
262
263 #define R128_PCI_GART_PAGE 0x017c
264 #define R128_PRIM_TEX_CNTL_C 0x1cb0
265
266 #define R128_SCALE_3D_CNTL 0x1a00
267 #define R128_SEC_TEX_CNTL_C 0x1d00
268 #define R128_SEC_TEXTURE_BORDER_COLOR_C 0x1d3c
269 #define R128_SETUP_CNTL 0x1bc4
270 #define R128_STEN_REF_MASK_C 0x1d40
271
272 #define R128_TEX_CNTL_C 0x1c9c
273 # define R128_TEX_CACHE_FLUSH (1 << 23)
274
275 #define R128_WAIT_UNTIL 0x1720
276 # define R128_EVENT_CRTC_OFFSET (1 << 0)
277 #define R128_WINDOW_XY_OFFSET 0x1bcc
278
279 /* CCE registers
280 */
281 #define R128_PM4_BUFFER_OFFSET 0x0700
282 #define R128_PM4_BUFFER_CNTL 0x0704
283 # define R128_PM4_MASK (15 << 28)
284 # define R128_PM4_NONPM4 (0 << 28)
285 # define R128_PM4_192PIO (1 << 28)
286 # define R128_PM4_192BM (2 << 28)
287 # define R128_PM4_128PIO_64INDBM (3 << 28)
288 # define R128_PM4_128BM_64INDBM (4 << 28)
289 # define R128_PM4_64PIO_128INDBM (5 << 28)
290 # define R128_PM4_64BM_128INDBM (6 << 28)
291 # define R128_PM4_64PIO_64VCBM_64INDBM (7 << 28)
292 # define R128_PM4_64BM_64VCBM_64INDBM (8 << 28)
293 # define R128_PM4_64PIO_64VCPIO_64INDPIO (15 << 28)
294 # define R128_PM4_BUFFER_CNTL_NOUPDATE (1 << 27)
295
296 #define R128_PM4_BUFFER_WM_CNTL 0x0708
297 # define R128_WMA_SHIFT 0
298 # define R128_WMB_SHIFT 8
299 # define R128_WMC_SHIFT 16
300 # define R128_WB_WM_SHIFT 24
301
302 #define R128_PM4_BUFFER_DL_RPTR_ADDR 0x070c
303 #define R128_PM4_BUFFER_DL_RPTR 0x0710
304 #define R128_PM4_BUFFER_DL_WPTR 0x0714
305 # define R128_PM4_BUFFER_DL_DONE (1 << 31)
306
307 #define R128_PM4_VC_FPU_SETUP 0x071c
308
309 #define R128_PM4_IW_INDOFF 0x0738
310 #define R128_PM4_IW_INDSIZE 0x073c
311
312 #define R128_PM4_STAT 0x07b8
313 # define R128_PM4_FIFOCNT_MASK 0x0fff
314 # define R128_PM4_BUSY (1 << 16)
315 # define R128_PM4_GUI_ACTIVE (1 << 31)
316
317 #define R128_PM4_MICROCODE_ADDR 0x07d4
318 #define R128_PM4_MICROCODE_RADDR 0x07d8
319 #define R128_PM4_MICROCODE_DATAH 0x07dc
320 #define R128_PM4_MICROCODE_DATAL 0x07e0
321
322 #define R128_PM4_BUFFER_ADDR 0x07f0
323 #define R128_PM4_MICRO_CNTL 0x07fc
324 # define R128_PM4_MICRO_FREERUN (1 << 30)
325
326 #define R128_PM4_FIFO_DATA_EVEN 0x1000
327 #define R128_PM4_FIFO_DATA_ODD 0x1004
328
329 /* CCE command packets
330 */
331 #define R128_CCE_PACKET0 0x00000000
332 #define R128_CCE_PACKET1 0x40000000
333 #define R128_CCE_PACKET2 0x80000000
334 #define R128_CCE_PACKET3 0xC0000000
335 # define R128_CNTL_HOSTDATA_BLT 0x00009400
336 # define R128_CNTL_PAINT_MULTI 0x00009A00
337 # define R128_CNTL_BITBLT_MULTI 0x00009B00
338 # define R128_3D_RNDR_GEN_INDX_PRIM 0x00002300
339
340 #define R128_CCE_PACKET_MASK 0xC0000000
341 #define R128_CCE_PACKET_COUNT_MASK 0x3fff0000
342 #define R128_CCE_PACKET0_REG_MASK 0x000007ff
343 #define R128_CCE_PACKET1_REG0_MASK 0x000007ff
344 #define R128_CCE_PACKET1_REG1_MASK 0x003ff800
345
346 #define R128_CCE_VC_CNTL_PRIM_TYPE_NONE 0x00000000
347 #define R128_CCE_VC_CNTL_PRIM_TYPE_POINT 0x00000001
348 #define R128_CCE_VC_CNTL_PRIM_TYPE_LINE 0x00000002
349 #define R128_CCE_VC_CNTL_PRIM_TYPE_POLY_LINE 0x00000003
350 #define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_LIST 0x00000004
351 #define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_FAN 0x00000005
352 #define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_STRIP 0x00000006
353 #define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_TYPE2 0x00000007
354 #define R128_CCE_VC_CNTL_PRIM_WALK_IND 0x00000010
355 #define R128_CCE_VC_CNTL_PRIM_WALK_LIST 0x00000020
356 #define R128_CCE_VC_CNTL_PRIM_WALK_RING 0x00000030
357 #define R128_CCE_VC_CNTL_NUM_SHIFT 16
358
359 #define R128_DATATYPE_VQ 0
360 #define R128_DATATYPE_CI4 1
361 #define R128_DATATYPE_CI8 2
362 #define R128_DATATYPE_ARGB1555 3
363 #define R128_DATATYPE_RGB565 4
364 #define R128_DATATYPE_RGB888 5
365 #define R128_DATATYPE_ARGB8888 6
366 #define R128_DATATYPE_RGB332 7
367 #define R128_DATATYPE_Y8 8
368 #define R128_DATATYPE_RGB8 9
369 #define R128_DATATYPE_CI16 10
370 #define R128_DATATYPE_YVYU422 11
371 #define R128_DATATYPE_VYUY422 12
372 #define R128_DATATYPE_AYUV444 14
373 #define R128_DATATYPE_ARGB4444 15
374
375 /* Constants */
376 #define R128_AGP_OFFSET 0x02000000
377
378 #define R128_WATERMARK_L 16
379 #define R128_WATERMARK_M 8
380 #define R128_WATERMARK_N 8
381 #define R128_WATERMARK_K 128
382
383 #define R128_MAX_USEC_TIMEOUT 100000 /* 100 ms */
384
385 #define R128_LAST_FRAME_REG R128_GUI_SCRATCH_REG0
386 #define R128_LAST_DISPATCH_REG R128_GUI_SCRATCH_REG1
387 #define R128_MAX_VB_AGE 0x7fffffff
388 #define R128_MAX_VB_VERTS (0xffff)
389
390 #define R128_RING_HIGH_MARK 128
391
392 #define R128_PERFORMANCE_BOXES 0
393
394 #define R128_PCIGART_TABLE_SIZE 32768
395
396 #define R128_READ(reg) DRM_READ32(dev_priv->mmio, (reg))
397 #define R128_WRITE(reg, val) DRM_WRITE32(dev_priv->mmio, (reg), (val))
398 #define R128_READ8(reg) DRM_READ8(dev_priv->mmio, (reg))
399 #define R128_WRITE8(reg, val) DRM_WRITE8(dev_priv->mmio, (reg), (val))
400
401 #define R128_WRITE_PLL(addr, val) \
402 do { \
403 R128_WRITE8(R128_CLOCK_CNTL_INDEX, \
404 ((addr) & 0x1f) | R128_PLL_WR_EN); \
405 R128_WRITE(R128_CLOCK_CNTL_DATA, (val)); \
406 } while (0)
407
408 #define CCE_PACKET0(reg, n) (R128_CCE_PACKET0 | \
409 ((n) << 16) | ((reg) >> 2))
410 #define CCE_PACKET1(reg0, reg1) (R128_CCE_PACKET1 | \
411 (((reg1) >> 2) << 11) | ((reg0) >> 2))
412 #define CCE_PACKET2() (R128_CCE_PACKET2)
413 #define CCE_PACKET3(pkt, n) (R128_CCE_PACKET3 | \
414 (pkt) | ((n) << 16))
415
r128_update_ring_snapshot(drm_r128_private_t * dev_priv)416 static __inline__ void r128_update_ring_snapshot(drm_r128_private_t *dev_priv)
417 {
418 drm_r128_ring_buffer_t *ring = &dev_priv->ring;
419 ring->space = (GET_RING_HEAD(dev_priv) - ring->tail) * sizeof(u32);
420 if (ring->space <= 0)
421 ring->space += ring->size;
422 }
423
424 /* ================================================================
425 * Misc helper macros
426 */
427
428 #define DEV_INIT_TEST_WITH_RETURN(_dev_priv) \
429 do { \
430 if (!_dev_priv) { \
431 DRM_ERROR("called with no initialization\n"); \
432 return -EINVAL; \
433 } \
434 } while (0)
435
436 #define RING_SPACE_TEST_WITH_RETURN(dev_priv) \
437 do { \
438 drm_r128_ring_buffer_t *ring = &dev_priv->ring; int i; \
439 if (ring->space < ring->high_mark) { \
440 for (i = 0 ; i < dev_priv->usec_timeout ; i++) { \
441 r128_update_ring_snapshot(dev_priv); \
442 if (ring->space >= ring->high_mark) \
443 goto __ring_space_done; \
444 DRM_UDELAY(1); \
445 } \
446 DRM_ERROR("ring space check failed!\n"); \
447 return -EBUSY; \
448 } \
449 __ring_space_done: \
450 ; \
451 } while (0)
452
453 #define VB_AGE_TEST_WITH_RETURN(dev_priv) \
454 do { \
455 drm_r128_sarea_t *sarea_priv = dev_priv->sarea_priv; \
456 if (sarea_priv->last_dispatch >= R128_MAX_VB_AGE) { \
457 int __ret = r128_do_cce_idle(dev_priv); \
458 if (__ret) \
459 return __ret; \
460 sarea_priv->last_dispatch = 0; \
461 r128_freelist_reset(dev); \
462 } \
463 } while (0)
464
465 #define R128_WAIT_UNTIL_PAGE_FLIPPED() do { \
466 OUT_RING(CCE_PACKET0(R128_WAIT_UNTIL, 0)); \
467 OUT_RING(R128_EVENT_CRTC_OFFSET); \
468 } while (0)
469
470 /* ================================================================
471 * Ring control
472 */
473
474 #define R128_VERBOSE 0
475
476 #define RING_LOCALS \
477 int write, _nr; unsigned int tail_mask; volatile u32 *ring;
478
479 #define BEGIN_RING(n) do { \
480 if (R128_VERBOSE) \
481 DRM_INFO("BEGIN_RING(%d)\n", (n)); \
482 if (dev_priv->ring.space <= (n) * sizeof(u32)) { \
483 COMMIT_RING(); \
484 r128_wait_ring(dev_priv, (n) * sizeof(u32)); \
485 } \
486 _nr = n; dev_priv->ring.space -= (n) * sizeof(u32); \
487 ring = dev_priv->ring.start; \
488 write = dev_priv->ring.tail; \
489 tail_mask = dev_priv->ring.tail_mask; \
490 } while (0)
491
492 /* You can set this to zero if you want. If the card locks up, you'll
493 * need to keep this set. It works around a bug in early revs of the
494 * Rage 128 chipset, where the CCE would read 32 dwords past the end of
495 * the ring buffer before wrapping around.
496 */
497 #define R128_BROKEN_CCE 1
498
499 #define ADVANCE_RING() do { \
500 if (R128_VERBOSE) \
501 DRM_INFO("ADVANCE_RING() wr=0x%06x tail=0x%06x\n", \
502 write, dev_priv->ring.tail); \
503 if (R128_BROKEN_CCE && write < 32) \
504 memcpy(dev_priv->ring.end, \
505 dev_priv->ring.start, \
506 write * sizeof(u32)); \
507 if (((dev_priv->ring.tail + _nr) & tail_mask) != write) \
508 DRM_ERROR( \
509 "ADVANCE_RING(): mismatch: nr: %x write: %x line: %d\n", \
510 ((dev_priv->ring.tail + _nr) & tail_mask), \
511 write, __LINE__); \
512 else \
513 dev_priv->ring.tail = write; \
514 } while (0)
515
516 #define COMMIT_RING() do { \
517 if (R128_VERBOSE) \
518 DRM_INFO("COMMIT_RING() tail=0x%06x\n", \
519 dev_priv->ring.tail); \
520 mb(); \
521 R128_WRITE(R128_PM4_BUFFER_DL_WPTR, dev_priv->ring.tail); \
522 R128_READ(R128_PM4_BUFFER_DL_WPTR); \
523 } while (0)
524
525 #define OUT_RING(x) do { \
526 if (R128_VERBOSE) \
527 DRM_INFO(" OUT_RING( 0x%08x ) at 0x%x\n", \
528 (unsigned int)(x), write); \
529 ring[write++] = cpu_to_le32(x); \
530 write &= tail_mask; \
531 } while (0)
532
533 #endif /* __R128_DRV_H__ */
534