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 <linux/delay.h>
39 #include <linux/io.h>
40 #include <linux/irqreturn.h>
41
42 #include <drm/ati_pcigart.h>
43 #include <drm/drm_ioctl.h>
44 #include <drm/drm_legacy.h>
45 #include <drm/r128_drm.h>
46
47 /* General customization:
48 */
49 #define DRIVER_AUTHOR "Gareth Hughes, VA Linux Systems Inc."
50
51 #define DRIVER_NAME "r128"
52 #define DRIVER_DESC "ATI Rage 128"
53 #define DRIVER_DATE "20030725"
54
55 /* Interface history:
56 *
57 * ?? - ??
58 * 2.4 - Add support for ycbcr textures (no new ioctls)
59 * 2.5 - Add FLIP ioctl, disable FULLSCREEN.
60 */
61 #define DRIVER_MAJOR 2
62 #define DRIVER_MINOR 5
63 #define DRIVER_PATCHLEVEL 0
64
65 #define GET_RING_HEAD(dev_priv) R128_READ(R128_PM4_BUFFER_DL_RPTR)
66
67 typedef struct drm_r128_freelist {
68 unsigned int age;
69 struct drm_buf *buf;
70 struct drm_r128_freelist *next;
71 struct drm_r128_freelist *prev;
72 } drm_r128_freelist_t;
73
74 typedef struct drm_r128_ring_buffer {
75 u32 *start;
76 u32 *end;
77 int size;
78 int size_l2qw;
79
80 u32 tail;
81 u32 tail_mask;
82 int space;
83
84 int high_mark;
85 } drm_r128_ring_buffer_t;
86
87 typedef struct drm_r128_private {
88 drm_r128_ring_buffer_t ring;
89 drm_r128_sarea_t *sarea_priv;
90
91 int cce_mode;
92 int cce_fifo_size;
93 int cce_running;
94
95 drm_r128_freelist_t *head;
96 drm_r128_freelist_t *tail;
97
98 int usec_timeout;
99 int is_pci;
100 unsigned long cce_buffers_offset;
101
102 atomic_t idle_count;
103
104 int page_flipping;
105 int current_page;
106 u32 crtc_offset;
107 u32 crtc_offset_cntl;
108
109 atomic_t vbl_received;
110
111 u32 color_fmt;
112 unsigned int front_offset;
113 unsigned int front_pitch;
114 unsigned int back_offset;
115 unsigned int back_pitch;
116
117 u32 depth_fmt;
118 unsigned int depth_offset;
119 unsigned int depth_pitch;
120 unsigned int span_offset;
121
122 u32 front_pitch_offset_c;
123 u32 back_pitch_offset_c;
124 u32 depth_pitch_offset_c;
125 u32 span_pitch_offset_c;
126
127 drm_local_map_t *sarea;
128 drm_local_map_t *mmio;
129 drm_local_map_t *cce_ring;
130 drm_local_map_t *ring_rptr;
131 drm_local_map_t *agp_textures;
132 struct drm_ati_pcigart_info gart_info;
133 } drm_r128_private_t;
134
135 typedef struct drm_r128_buf_priv {
136 u32 age;
137 int prim;
138 int discard;
139 int dispatched;
140 drm_r128_freelist_t *list_entry;
141 } drm_r128_buf_priv_t;
142
143 extern const struct drm_ioctl_desc r128_ioctls[];
144 extern int r128_max_ioctl;
145
146 /* r128_cce.c */
147 extern int r128_cce_init(struct drm_device *dev, void *data, struct drm_file *file_priv);
148 extern int r128_cce_start(struct drm_device *dev, void *data, struct drm_file *file_priv);
149 extern int r128_cce_stop(struct drm_device *dev, void *data, struct drm_file *file_priv);
150 extern int r128_cce_reset(struct drm_device *dev, void *data, struct drm_file *file_priv);
151 extern int r128_cce_idle(struct drm_device *dev, void *data, struct drm_file *file_priv);
152 extern int r128_engine_reset(struct drm_device *dev, void *data, struct drm_file *file_priv);
153 extern int r128_fullscreen(struct drm_device *dev, void *data, struct drm_file *file_priv);
154 extern int r128_cce_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv);
155
156 extern int r128_cce_stipple(struct drm_device *dev, void *data, struct drm_file *file_priv);
157 extern int r128_cce_depth(struct drm_device *dev, void *data, struct drm_file *file_priv);
158 extern int r128_getparam(struct drm_device *dev, void *data, struct drm_file *file_priv);
159
160 extern void r128_freelist_reset(struct drm_device *dev);
161
162 extern int r128_wait_ring(drm_r128_private_t *dev_priv, int n);
163
164 extern int r128_do_cce_idle(drm_r128_private_t *dev_priv);
165 extern int r128_do_cleanup_cce(struct drm_device *dev);
166
167 extern int r128_enable_vblank(struct drm_device *dev, unsigned int pipe);
168 extern void r128_disable_vblank(struct drm_device *dev, unsigned int pipe);
169 extern u32 r128_get_vblank_counter(struct drm_device *dev, unsigned int pipe);
170 extern irqreturn_t r128_driver_irq_handler(int irq, void *arg);
171 extern void r128_driver_irq_preinstall(struct drm_device *dev);
172 extern int r128_driver_irq_postinstall(struct drm_device *dev);
173 extern void r128_driver_irq_uninstall(struct drm_device *dev);
174 extern void r128_driver_lastclose(struct drm_device *dev);
175 extern int r128_driver_load(struct drm_device *dev, unsigned long flags);
176 extern void r128_driver_preclose(struct drm_device *dev,
177 struct drm_file *file_priv);
178
179 extern long r128_compat_ioctl(struct file *filp, unsigned int cmd,
180 unsigned long arg);
181
182 /* Register definitions, register access macros and drmAddMap constants
183 * for Rage 128 kernel driver.
184 */
185
186 #define R128_AUX_SC_CNTL 0x1660
187 # define R128_AUX1_SC_EN (1 << 0)
188 # define R128_AUX1_SC_MODE_OR (0 << 1)
189 # define R128_AUX1_SC_MODE_NAND (1 << 1)
190 # define R128_AUX2_SC_EN (1 << 2)
191 # define R128_AUX2_SC_MODE_OR (0 << 3)
192 # define R128_AUX2_SC_MODE_NAND (1 << 3)
193 # define R128_AUX3_SC_EN (1 << 4)
194 # define R128_AUX3_SC_MODE_OR (0 << 5)
195 # define R128_AUX3_SC_MODE_NAND (1 << 5)
196 #define R128_AUX1_SC_LEFT 0x1664
197 #define R128_AUX1_SC_RIGHT 0x1668
198 #define R128_AUX1_SC_TOP 0x166c
199 #define R128_AUX1_SC_BOTTOM 0x1670
200 #define R128_AUX2_SC_LEFT 0x1674
201 #define R128_AUX2_SC_RIGHT 0x1678
202 #define R128_AUX2_SC_TOP 0x167c
203 #define R128_AUX2_SC_BOTTOM 0x1680
204 #define R128_AUX3_SC_LEFT 0x1684
205 #define R128_AUX3_SC_RIGHT 0x1688
206 #define R128_AUX3_SC_TOP 0x168c
207 #define R128_AUX3_SC_BOTTOM 0x1690
208
209 #define R128_BRUSH_DATA0 0x1480
210 #define R128_BUS_CNTL 0x0030
211 # define R128_BUS_MASTER_DIS (1 << 6)
212
213 #define R128_CLOCK_CNTL_INDEX 0x0008
214 #define R128_CLOCK_CNTL_DATA 0x000c
215 # define R128_PLL_WR_EN (1 << 7)
216 #define R128_CONSTANT_COLOR_C 0x1d34
217 #define R128_CRTC_OFFSET 0x0224
218 #define R128_CRTC_OFFSET_CNTL 0x0228
219 # define R128_CRTC_OFFSET_FLIP_CNTL (1 << 16)
220
221 #define R128_DP_GUI_MASTER_CNTL 0x146c
222 # define R128_GMC_SRC_PITCH_OFFSET_CNTL (1 << 0)
223 # define R128_GMC_DST_PITCH_OFFSET_CNTL (1 << 1)
224 # define R128_GMC_BRUSH_SOLID_COLOR (13 << 4)
225 # define R128_GMC_BRUSH_NONE (15 << 4)
226 # define R128_GMC_DST_16BPP (4 << 8)
227 # define R128_GMC_DST_24BPP (5 << 8)
228 # define R128_GMC_DST_32BPP (6 << 8)
229 # define R128_GMC_DST_DATATYPE_SHIFT 8
230 # define R128_GMC_SRC_DATATYPE_COLOR (3 << 12)
231 # define R128_DP_SRC_SOURCE_MEMORY (2 << 24)
232 # define R128_DP_SRC_SOURCE_HOST_DATA (3 << 24)
233 # define R128_GMC_CLR_CMP_CNTL_DIS (1 << 28)
234 # define R128_GMC_AUX_CLIP_DIS (1 << 29)
235 # define R128_GMC_WR_MSK_DIS (1 << 30)
236 # define R128_ROP3_S 0x00cc0000
237 # define R128_ROP3_P 0x00f00000
238 #define R128_DP_WRITE_MASK 0x16cc
239 #define R128_DST_PITCH_OFFSET_C 0x1c80
240 # define R128_DST_TILE (1 << 31)
241
242 #define R128_GEN_INT_CNTL 0x0040
243 # define R128_CRTC_VBLANK_INT_EN (1 << 0)
244 #define R128_GEN_INT_STATUS 0x0044
245 # define R128_CRTC_VBLANK_INT (1 << 0)
246 # define R128_CRTC_VBLANK_INT_AK (1 << 0)
247 #define R128_GEN_RESET_CNTL 0x00f0
248 # define R128_SOFT_RESET_GUI (1 << 0)
249
250 #define R128_GUI_SCRATCH_REG0 0x15e0
251 #define R128_GUI_SCRATCH_REG1 0x15e4
252 #define R128_GUI_SCRATCH_REG2 0x15e8
253 #define R128_GUI_SCRATCH_REG3 0x15ec
254 #define R128_GUI_SCRATCH_REG4 0x15f0
255 #define R128_GUI_SCRATCH_REG5 0x15f4
256
257 #define R128_GUI_STAT 0x1740
258 # define R128_GUI_FIFOCNT_MASK 0x0fff
259 # define R128_GUI_ACTIVE (1 << 31)
260
261 #define R128_MCLK_CNTL 0x000f
262 # define R128_FORCE_GCP (1 << 16)
263 # define R128_FORCE_PIPE3D_CP (1 << 17)
264 # define R128_FORCE_RCP (1 << 18)
265
266 #define R128_PC_GUI_CTLSTAT 0x1748
267 #define R128_PC_NGUI_CTLSTAT 0x0184
268 # define R128_PC_FLUSH_GUI (3 << 0)
269 # define R128_PC_RI_GUI (1 << 2)
270 # define R128_PC_FLUSH_ALL 0x00ff
271 # define R128_PC_BUSY (1 << 31)
272
273 #define R128_PCI_GART_PAGE 0x017c
274 #define R128_PRIM_TEX_CNTL_C 0x1cb0
275
276 #define R128_SCALE_3D_CNTL 0x1a00
277 #define R128_SEC_TEX_CNTL_C 0x1d00
278 #define R128_SEC_TEXTURE_BORDER_COLOR_C 0x1d3c
279 #define R128_SETUP_CNTL 0x1bc4
280 #define R128_STEN_REF_MASK_C 0x1d40
281
282 #define R128_TEX_CNTL_C 0x1c9c
283 # define R128_TEX_CACHE_FLUSH (1 << 23)
284
285 #define R128_WAIT_UNTIL 0x1720
286 # define R128_EVENT_CRTC_OFFSET (1 << 0)
287 #define R128_WINDOW_XY_OFFSET 0x1bcc
288
289 /* CCE registers
290 */
291 #define R128_PM4_BUFFER_OFFSET 0x0700
292 #define R128_PM4_BUFFER_CNTL 0x0704
293 # define R128_PM4_MASK (15 << 28)
294 # define R128_PM4_NONPM4 (0 << 28)
295 # define R128_PM4_192PIO (1 << 28)
296 # define R128_PM4_192BM (2 << 28)
297 # define R128_PM4_128PIO_64INDBM (3 << 28)
298 # define R128_PM4_128BM_64INDBM (4 << 28)
299 # define R128_PM4_64PIO_128INDBM (5 << 28)
300 # define R128_PM4_64BM_128INDBM (6 << 28)
301 # define R128_PM4_64PIO_64VCBM_64INDBM (7 << 28)
302 # define R128_PM4_64BM_64VCBM_64INDBM (8 << 28)
303 # define R128_PM4_64PIO_64VCPIO_64INDPIO (15 << 28)
304 # define R128_PM4_BUFFER_CNTL_NOUPDATE (1 << 27)
305
306 #define R128_PM4_BUFFER_WM_CNTL 0x0708
307 # define R128_WMA_SHIFT 0
308 # define R128_WMB_SHIFT 8
309 # define R128_WMC_SHIFT 16
310 # define R128_WB_WM_SHIFT 24
311
312 #define R128_PM4_BUFFER_DL_RPTR_ADDR 0x070c
313 #define R128_PM4_BUFFER_DL_RPTR 0x0710
314 #define R128_PM4_BUFFER_DL_WPTR 0x0714
315 # define R128_PM4_BUFFER_DL_DONE (1 << 31)
316
317 #define R128_PM4_VC_FPU_SETUP 0x071c
318
319 #define R128_PM4_IW_INDOFF 0x0738
320 #define R128_PM4_IW_INDSIZE 0x073c
321
322 #define R128_PM4_STAT 0x07b8
323 # define R128_PM4_FIFOCNT_MASK 0x0fff
324 # define R128_PM4_BUSY (1 << 16)
325 # define R128_PM4_GUI_ACTIVE (1 << 31)
326
327 #define R128_PM4_MICROCODE_ADDR 0x07d4
328 #define R128_PM4_MICROCODE_RADDR 0x07d8
329 #define R128_PM4_MICROCODE_DATAH 0x07dc
330 #define R128_PM4_MICROCODE_DATAL 0x07e0
331
332 #define R128_PM4_BUFFER_ADDR 0x07f0
333 #define R128_PM4_MICRO_CNTL 0x07fc
334 # define R128_PM4_MICRO_FREERUN (1 << 30)
335
336 #define R128_PM4_FIFO_DATA_EVEN 0x1000
337 #define R128_PM4_FIFO_DATA_ODD 0x1004
338
339 /* CCE command packets
340 */
341 #define R128_CCE_PACKET0 0x00000000
342 #define R128_CCE_PACKET1 0x40000000
343 #define R128_CCE_PACKET2 0x80000000
344 #define R128_CCE_PACKET3 0xC0000000
345 # define R128_CNTL_HOSTDATA_BLT 0x00009400
346 # define R128_CNTL_PAINT_MULTI 0x00009A00
347 # define R128_CNTL_BITBLT_MULTI 0x00009B00
348 # define R128_3D_RNDR_GEN_INDX_PRIM 0x00002300
349
350 #define R128_CCE_PACKET_MASK 0xC0000000
351 #define R128_CCE_PACKET_COUNT_MASK 0x3fff0000
352 #define R128_CCE_PACKET0_REG_MASK 0x000007ff
353 #define R128_CCE_PACKET1_REG0_MASK 0x000007ff
354 #define R128_CCE_PACKET1_REG1_MASK 0x003ff800
355
356 #define R128_CCE_VC_CNTL_PRIM_TYPE_NONE 0x00000000
357 #define R128_CCE_VC_CNTL_PRIM_TYPE_POINT 0x00000001
358 #define R128_CCE_VC_CNTL_PRIM_TYPE_LINE 0x00000002
359 #define R128_CCE_VC_CNTL_PRIM_TYPE_POLY_LINE 0x00000003
360 #define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_LIST 0x00000004
361 #define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_FAN 0x00000005
362 #define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_STRIP 0x00000006
363 #define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_TYPE2 0x00000007
364 #define R128_CCE_VC_CNTL_PRIM_WALK_IND 0x00000010
365 #define R128_CCE_VC_CNTL_PRIM_WALK_LIST 0x00000020
366 #define R128_CCE_VC_CNTL_PRIM_WALK_RING 0x00000030
367 #define R128_CCE_VC_CNTL_NUM_SHIFT 16
368
369 #define R128_DATATYPE_VQ 0
370 #define R128_DATATYPE_CI4 1
371 #define R128_DATATYPE_CI8 2
372 #define R128_DATATYPE_ARGB1555 3
373 #define R128_DATATYPE_RGB565 4
374 #define R128_DATATYPE_RGB888 5
375 #define R128_DATATYPE_ARGB8888 6
376 #define R128_DATATYPE_RGB332 7
377 #define R128_DATATYPE_Y8 8
378 #define R128_DATATYPE_RGB8 9
379 #define R128_DATATYPE_CI16 10
380 #define R128_DATATYPE_YVYU422 11
381 #define R128_DATATYPE_VYUY422 12
382 #define R128_DATATYPE_AYUV444 14
383 #define R128_DATATYPE_ARGB4444 15
384
385 /* Constants */
386 #define R128_AGP_OFFSET 0x02000000
387
388 #define R128_WATERMARK_L 16
389 #define R128_WATERMARK_M 8
390 #define R128_WATERMARK_N 8
391 #define R128_WATERMARK_K 128
392
393 #define R128_MAX_USEC_TIMEOUT 100000 /* 100 ms */
394
395 #define R128_LAST_FRAME_REG R128_GUI_SCRATCH_REG0
396 #define R128_LAST_DISPATCH_REG R128_GUI_SCRATCH_REG1
397 #define R128_MAX_VB_AGE 0x7fffffff
398 #define R128_MAX_VB_VERTS (0xffff)
399
400 #define R128_RING_HIGH_MARK 128
401
402 #define R128_PERFORMANCE_BOXES 0
403
404 #define R128_PCIGART_TABLE_SIZE 32768
405
406 #define R128_READ(reg) readl(((void __iomem *)dev_priv->mmio->handle) + (reg))
407 #define R128_WRITE(reg, val) writel(val, ((void __iomem *)dev_priv->mmio->handle) + (reg))
408 #define R128_READ8(reg) readb(((void __iomem *)dev_priv->mmio->handle) + (reg))
409 #define R128_WRITE8(reg, val) writeb(val, ((void __iomem *)dev_priv->mmio->handle) + (reg))
410
411 #define R128_WRITE_PLL(addr, val) \
412 do { \
413 R128_WRITE8(R128_CLOCK_CNTL_INDEX, \
414 ((addr) & 0x1f) | R128_PLL_WR_EN); \
415 R128_WRITE(R128_CLOCK_CNTL_DATA, (val)); \
416 } while (0)
417
418 #define CCE_PACKET0(reg, n) (R128_CCE_PACKET0 | \
419 ((n) << 16) | ((reg) >> 2))
420 #define CCE_PACKET1(reg0, reg1) (R128_CCE_PACKET1 | \
421 (((reg1) >> 2) << 11) | ((reg0) >> 2))
422 #define CCE_PACKET2() (R128_CCE_PACKET2)
423 #define CCE_PACKET3(pkt, n) (R128_CCE_PACKET3 | \
424 (pkt) | ((n) << 16))
425
r128_update_ring_snapshot(drm_r128_private_t * dev_priv)426 static __inline__ void r128_update_ring_snapshot(drm_r128_private_t *dev_priv)
427 {
428 drm_r128_ring_buffer_t *ring = &dev_priv->ring;
429 ring->space = (GET_RING_HEAD(dev_priv) - ring->tail) * sizeof(u32);
430 if (ring->space <= 0)
431 ring->space += ring->size;
432 }
433
434 /* ================================================================
435 * Misc helper macros
436 */
437
438 #define DEV_INIT_TEST_WITH_RETURN(_dev_priv) \
439 do { \
440 if (!_dev_priv) { \
441 DRM_ERROR("called with no initialization\n"); \
442 return -EINVAL; \
443 } \
444 } while (0)
445
446 #define RING_SPACE_TEST_WITH_RETURN(dev_priv) \
447 do { \
448 drm_r128_ring_buffer_t *ring = &dev_priv->ring; int i; \
449 if (ring->space < ring->high_mark) { \
450 for (i = 0 ; i < dev_priv->usec_timeout ; i++) { \
451 r128_update_ring_snapshot(dev_priv); \
452 if (ring->space >= ring->high_mark) \
453 goto __ring_space_done; \
454 udelay(1); \
455 } \
456 DRM_ERROR("ring space check failed!\n"); \
457 return -EBUSY; \
458 } \
459 __ring_space_done: \
460 ; \
461 } while (0)
462
463 #define VB_AGE_TEST_WITH_RETURN(dev_priv) \
464 do { \
465 drm_r128_sarea_t *sarea_priv = dev_priv->sarea_priv; \
466 if (sarea_priv->last_dispatch >= R128_MAX_VB_AGE) { \
467 int __ret = r128_do_cce_idle(dev_priv); \
468 if (__ret) \
469 return __ret; \
470 sarea_priv->last_dispatch = 0; \
471 r128_freelist_reset(dev); \
472 } \
473 } while (0)
474
475 #define R128_WAIT_UNTIL_PAGE_FLIPPED() do { \
476 OUT_RING(CCE_PACKET0(R128_WAIT_UNTIL, 0)); \
477 OUT_RING(R128_EVENT_CRTC_OFFSET); \
478 } while (0)
479
480 /* ================================================================
481 * Ring control
482 */
483
484 #define R128_VERBOSE 0
485
486 #define RING_LOCALS \
487 int write, _nr; unsigned int tail_mask; volatile u32 *ring;
488
489 #define BEGIN_RING(n) do { \
490 if (R128_VERBOSE) \
491 DRM_INFO("BEGIN_RING(%d)\n", (n)); \
492 if (dev_priv->ring.space <= (n) * sizeof(u32)) { \
493 COMMIT_RING(); \
494 r128_wait_ring(dev_priv, (n) * sizeof(u32)); \
495 } \
496 _nr = n; dev_priv->ring.space -= (n) * sizeof(u32); \
497 ring = dev_priv->ring.start; \
498 write = dev_priv->ring.tail; \
499 tail_mask = dev_priv->ring.tail_mask; \
500 } while (0)
501
502 /* You can set this to zero if you want. If the card locks up, you'll
503 * need to keep this set. It works around a bug in early revs of the
504 * Rage 128 chipset, where the CCE would read 32 dwords past the end of
505 * the ring buffer before wrapping around.
506 */
507 #define R128_BROKEN_CCE 1
508
509 #define ADVANCE_RING() do { \
510 if (R128_VERBOSE) \
511 DRM_INFO("ADVANCE_RING() wr=0x%06x tail=0x%06x\n", \
512 write, dev_priv->ring.tail); \
513 if (R128_BROKEN_CCE && write < 32) \
514 memcpy(dev_priv->ring.end, \
515 dev_priv->ring.start, \
516 write * sizeof(u32)); \
517 if (((dev_priv->ring.tail + _nr) & tail_mask) != write) \
518 DRM_ERROR( \
519 "ADVANCE_RING(): mismatch: nr: %x write: %x line: %d\n", \
520 ((dev_priv->ring.tail + _nr) & tail_mask), \
521 write, __LINE__); \
522 else \
523 dev_priv->ring.tail = write; \
524 } while (0)
525
526 #define COMMIT_RING() do { \
527 if (R128_VERBOSE) \
528 DRM_INFO("COMMIT_RING() tail=0x%06x\n", \
529 dev_priv->ring.tail); \
530 mb(); \
531 R128_WRITE(R128_PM4_BUFFER_DL_WPTR, dev_priv->ring.tail); \
532 R128_READ(R128_PM4_BUFFER_DL_WPTR); \
533 } while (0)
534
535 #define OUT_RING(x) do { \
536 if (R128_VERBOSE) \
537 DRM_INFO(" OUT_RING( 0x%08x ) at 0x%x\n", \
538 (unsigned int)(x), write); \
539 ring[write++] = cpu_to_le32(x); \
540 write &= tail_mask; \
541 } while (0)
542
543 #endif /* __R128_DRV_H__ */
544
