xref: /openbsd/sys/dev/pci/drm/radeon/rv515.c (revision 1099013b)
1 /*	$OpenBSD: rv515.c,v 1.1 2013/08/12 04:11:53 jsg Exp $	*/
2 /*
3  * Copyright 2008 Advanced Micro Devices, Inc.
4  * Copyright 2008 Red Hat Inc.
5  * Copyright 2009 Jerome Glisse.
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a
8  * copy of this software and associated documentation files (the "Software"),
9  * to deal in the Software without restriction, including without limitation
10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11  * and/or sell copies of the Software, and to permit persons to whom the
12  * Software is furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice shall be included in
15  * all copies or substantial portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23  * OTHER DEALINGS IN THE SOFTWARE.
24  *
25  * Authors: Dave Airlie
26  *          Alex Deucher
27  *          Jerome Glisse
28  */
29 #include <dev/pci/drm/drmP.h>
30 #include "rv515d.h"
31 #include "radeon.h"
32 #include "radeon_asic.h"
33 #include "atom.h"
34 #include "rv515_reg_safe.h"
35 
36 /* This files gather functions specifics to: rv515 */
37 static int rv515_debugfs_pipes_info_init(struct radeon_device *rdev);
38 static int rv515_debugfs_ga_info_init(struct radeon_device *rdev);
39 static void rv515_gpu_init(struct radeon_device *rdev);
40 int rv515_mc_wait_for_idle(struct radeon_device *rdev);
41 
42 static const u32 crtc_offsets[2] =
43 {
44 	0,
45 	AVIVO_D2CRTC_H_TOTAL - AVIVO_D1CRTC_H_TOTAL
46 };
47 
48 void rv515_debugfs(struct radeon_device *rdev)
49 {
50 	if (r100_debugfs_rbbm_init(rdev)) {
51 		DRM_ERROR("Failed to register debugfs file for RBBM !\n");
52 	}
53 	if (rv515_debugfs_pipes_info_init(rdev)) {
54 		DRM_ERROR("Failed to register debugfs file for pipes !\n");
55 	}
56 	if (rv515_debugfs_ga_info_init(rdev)) {
57 		DRM_ERROR("Failed to register debugfs file for pipes !\n");
58 	}
59 }
60 
61 void rv515_ring_start(struct radeon_device *rdev, struct radeon_ring *ring)
62 {
63 	int r;
64 
65 	r = radeon_ring_lock(rdev, ring, 64);
66 	if (r) {
67 		return;
68 	}
69 	radeon_ring_write(ring, PACKET0(ISYNC_CNTL, 0));
70 	radeon_ring_write(ring,
71 			  ISYNC_ANY2D_IDLE3D |
72 			  ISYNC_ANY3D_IDLE2D |
73 			  ISYNC_WAIT_IDLEGUI |
74 			  ISYNC_CPSCRATCH_IDLEGUI);
75 	radeon_ring_write(ring, PACKET0(WAIT_UNTIL, 0));
76 	radeon_ring_write(ring, WAIT_2D_IDLECLEAN | WAIT_3D_IDLECLEAN);
77 	radeon_ring_write(ring, PACKET0(R300_DST_PIPE_CONFIG, 0));
78 	radeon_ring_write(ring, R300_PIPE_AUTO_CONFIG);
79 	radeon_ring_write(ring, PACKET0(GB_SELECT, 0));
80 	radeon_ring_write(ring, 0);
81 	radeon_ring_write(ring, PACKET0(GB_ENABLE, 0));
82 	radeon_ring_write(ring, 0);
83 	radeon_ring_write(ring, PACKET0(R500_SU_REG_DEST, 0));
84 	radeon_ring_write(ring, (1 << rdev->num_gb_pipes) - 1);
85 	radeon_ring_write(ring, PACKET0(VAP_INDEX_OFFSET, 0));
86 	radeon_ring_write(ring, 0);
87 	radeon_ring_write(ring, PACKET0(RB3D_DSTCACHE_CTLSTAT, 0));
88 	radeon_ring_write(ring, RB3D_DC_FLUSH | RB3D_DC_FREE);
89 	radeon_ring_write(ring, PACKET0(ZB_ZCACHE_CTLSTAT, 0));
90 	radeon_ring_write(ring, ZC_FLUSH | ZC_FREE);
91 	radeon_ring_write(ring, PACKET0(WAIT_UNTIL, 0));
92 	radeon_ring_write(ring, WAIT_2D_IDLECLEAN | WAIT_3D_IDLECLEAN);
93 	radeon_ring_write(ring, PACKET0(GB_AA_CONFIG, 0));
94 	radeon_ring_write(ring, 0);
95 	radeon_ring_write(ring, PACKET0(RB3D_DSTCACHE_CTLSTAT, 0));
96 	radeon_ring_write(ring, RB3D_DC_FLUSH | RB3D_DC_FREE);
97 	radeon_ring_write(ring, PACKET0(ZB_ZCACHE_CTLSTAT, 0));
98 	radeon_ring_write(ring, ZC_FLUSH | ZC_FREE);
99 	radeon_ring_write(ring, PACKET0(GB_MSPOS0, 0));
100 	radeon_ring_write(ring,
101 			  ((6 << MS_X0_SHIFT) |
102 			   (6 << MS_Y0_SHIFT) |
103 			   (6 << MS_X1_SHIFT) |
104 			   (6 << MS_Y1_SHIFT) |
105 			   (6 << MS_X2_SHIFT) |
106 			   (6 << MS_Y2_SHIFT) |
107 			   (6 << MSBD0_Y_SHIFT) |
108 			   (6 << MSBD0_X_SHIFT)));
109 	radeon_ring_write(ring, PACKET0(GB_MSPOS1, 0));
110 	radeon_ring_write(ring,
111 			  ((6 << MS_X3_SHIFT) |
112 			   (6 << MS_Y3_SHIFT) |
113 			   (6 << MS_X4_SHIFT) |
114 			   (6 << MS_Y4_SHIFT) |
115 			   (6 << MS_X5_SHIFT) |
116 			   (6 << MS_Y5_SHIFT) |
117 			   (6 << MSBD1_SHIFT)));
118 	radeon_ring_write(ring, PACKET0(GA_ENHANCE, 0));
119 	radeon_ring_write(ring, GA_DEADLOCK_CNTL | GA_FASTSYNC_CNTL);
120 	radeon_ring_write(ring, PACKET0(GA_POLY_MODE, 0));
121 	radeon_ring_write(ring, FRONT_PTYPE_TRIANGE | BACK_PTYPE_TRIANGE);
122 	radeon_ring_write(ring, PACKET0(GA_ROUND_MODE, 0));
123 	radeon_ring_write(ring, GEOMETRY_ROUND_NEAREST | COLOR_ROUND_NEAREST);
124 	radeon_ring_write(ring, PACKET0(0x20C8, 0));
125 	radeon_ring_write(ring, 0);
126 	radeon_ring_unlock_commit(rdev, ring);
127 }
128 
129 int rv515_mc_wait_for_idle(struct radeon_device *rdev)
130 {
131 	unsigned i;
132 	uint32_t tmp;
133 
134 	for (i = 0; i < rdev->usec_timeout; i++) {
135 		/* read MC_STATUS */
136 		tmp = RREG32_MC(MC_STATUS);
137 		if (tmp & MC_STATUS_IDLE) {
138 			return 0;
139 		}
140 		udelay(1);
141 	}
142 	return -1;
143 }
144 
145 void rv515_vga_render_disable(struct radeon_device *rdev)
146 {
147 	WREG32(R_000300_VGA_RENDER_CONTROL,
148 		RREG32(R_000300_VGA_RENDER_CONTROL) & C_000300_VGA_VSTATUS_CNTL);
149 }
150 
151 static void rv515_gpu_init(struct radeon_device *rdev)
152 {
153 	unsigned pipe_select_current, gb_pipe_select, tmp;
154 
155 	if (r100_gui_wait_for_idle(rdev)) {
156 		DRM_ERROR("Failed to wait GUI idle while "
157 		       "resetting GPU. Bad things might happen.\n");
158 	}
159 	rv515_vga_render_disable(rdev);
160 	r420_pipes_init(rdev);
161 	gb_pipe_select = RREG32(R400_GB_PIPE_SELECT);
162 	tmp = RREG32(R300_DST_PIPE_CONFIG);
163 	pipe_select_current = (tmp >> 2) & 3;
164 	tmp = (1 << pipe_select_current) |
165 	      (((gb_pipe_select >> 8) & 0xF) << 4);
166 	WREG32_PLL(0x000D, tmp);
167 	if (r100_gui_wait_for_idle(rdev)) {
168 		DRM_ERROR("Failed to wait GUI idle while "
169 		       "resetting GPU. Bad things might happen.\n");
170 	}
171 	if (rv515_mc_wait_for_idle(rdev)) {
172 		DRM_ERROR("Failed to wait MC idle while "
173 		       "programming pipes. Bad things might happen.\n");
174 	}
175 }
176 
177 static void rv515_vram_get_type(struct radeon_device *rdev)
178 {
179 	uint32_t tmp;
180 
181 	rdev->mc.vram_width = 128;
182 	rdev->mc.vram_is_ddr = true;
183 	tmp = RREG32_MC(RV515_MC_CNTL) & MEM_NUM_CHANNELS_MASK;
184 	switch (tmp) {
185 	case 0:
186 		rdev->mc.vram_width = 64;
187 		break;
188 	case 1:
189 		rdev->mc.vram_width = 128;
190 		break;
191 	default:
192 		rdev->mc.vram_width = 128;
193 		break;
194 	}
195 }
196 
197 static void rv515_mc_init(struct radeon_device *rdev)
198 {
199 
200 	rv515_vram_get_type(rdev);
201 	r100_vram_init_sizes(rdev);
202 	radeon_vram_location(rdev, &rdev->mc, 0);
203 	rdev->mc.gtt_base_align = 0;
204 	if (!(rdev->flags & RADEON_IS_AGP))
205 		radeon_gtt_location(rdev, &rdev->mc);
206 	radeon_update_bandwidth_info(rdev);
207 }
208 
209 uint32_t rv515_mc_rreg(struct radeon_device *rdev, uint32_t reg)
210 {
211 	uint32_t r;
212 
213 	WREG32(MC_IND_INDEX, 0x7f0000 | (reg & 0xffff));
214 	r = RREG32(MC_IND_DATA);
215 	WREG32(MC_IND_INDEX, 0);
216 	return r;
217 }
218 
219 void rv515_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
220 {
221 	WREG32(MC_IND_INDEX, 0xff0000 | ((reg) & 0xffff));
222 	WREG32(MC_IND_DATA, (v));
223 	WREG32(MC_IND_INDEX, 0);
224 }
225 
226 #if defined(CONFIG_DEBUG_FS)
227 static int rv515_debugfs_pipes_info(struct seq_file *m, void *data)
228 {
229 	struct drm_info_node *node = (struct drm_info_node *) m->private;
230 	struct drm_device *dev = node->minor->dev;
231 	struct radeon_device *rdev = dev->dev_private;
232 	uint32_t tmp;
233 
234 	tmp = RREG32(GB_PIPE_SELECT);
235 	seq_printf(m, "GB_PIPE_SELECT 0x%08x\n", tmp);
236 	tmp = RREG32(SU_REG_DEST);
237 	seq_printf(m, "SU_REG_DEST 0x%08x\n", tmp);
238 	tmp = RREG32(GB_TILE_CONFIG);
239 	seq_printf(m, "GB_TILE_CONFIG 0x%08x\n", tmp);
240 	tmp = RREG32(DST_PIPE_CONFIG);
241 	seq_printf(m, "DST_PIPE_CONFIG 0x%08x\n", tmp);
242 	return 0;
243 }
244 
245 static int rv515_debugfs_ga_info(struct seq_file *m, void *data)
246 {
247 	struct drm_info_node *node = (struct drm_info_node *) m->private;
248 	struct drm_device *dev = node->minor->dev;
249 	struct radeon_device *rdev = dev->dev_private;
250 	uint32_t tmp;
251 
252 	tmp = RREG32(0x2140);
253 	seq_printf(m, "VAP_CNTL_STATUS 0x%08x\n", tmp);
254 	radeon_asic_reset(rdev);
255 	tmp = RREG32(0x425C);
256 	seq_printf(m, "GA_IDLE 0x%08x\n", tmp);
257 	return 0;
258 }
259 
260 static struct drm_info_list rv515_pipes_info_list[] = {
261 	{"rv515_pipes_info", rv515_debugfs_pipes_info, 0, NULL},
262 };
263 
264 static struct drm_info_list rv515_ga_info_list[] = {
265 	{"rv515_ga_info", rv515_debugfs_ga_info, 0, NULL},
266 };
267 #endif
268 
269 static int rv515_debugfs_pipes_info_init(struct radeon_device *rdev)
270 {
271 #if defined(CONFIG_DEBUG_FS)
272 	return radeon_debugfs_add_files(rdev, rv515_pipes_info_list, 1);
273 #else
274 	return 0;
275 #endif
276 }
277 
278 static int rv515_debugfs_ga_info_init(struct radeon_device *rdev)
279 {
280 #if defined(CONFIG_DEBUG_FS)
281 	return radeon_debugfs_add_files(rdev, rv515_ga_info_list, 1);
282 #else
283 	return 0;
284 #endif
285 }
286 
287 void rv515_mc_stop(struct radeon_device *rdev, struct rv515_mc_save *save)
288 {
289 	u32 crtc_enabled, tmp, frame_count, blackout;
290 	int i, j;
291 
292 	save->vga_render_control = RREG32(R_000300_VGA_RENDER_CONTROL);
293 	save->vga_hdp_control = RREG32(R_000328_VGA_HDP_CONTROL);
294 
295 	/* disable VGA render */
296 	WREG32(R_000300_VGA_RENDER_CONTROL, 0);
297 	/* blank the display controllers */
298 	for (i = 0; i < rdev->num_crtc; i++) {
299 		crtc_enabled = RREG32(AVIVO_D1CRTC_CONTROL + crtc_offsets[i]) & AVIVO_CRTC_EN;
300 		if (crtc_enabled) {
301 			save->crtc_enabled[i] = true;
302 			tmp = RREG32(AVIVO_D1CRTC_CONTROL + crtc_offsets[i]);
303 			if (!(tmp & AVIVO_CRTC_DISP_READ_REQUEST_DISABLE)) {
304 				radeon_wait_for_vblank(rdev, i);
305 				WREG32(AVIVO_D1CRTC_UPDATE_LOCK + crtc_offsets[i], 1);
306 				tmp |= AVIVO_CRTC_DISP_READ_REQUEST_DISABLE;
307 				WREG32(AVIVO_D1CRTC_CONTROL + crtc_offsets[i], tmp);
308 				WREG32(AVIVO_D1CRTC_UPDATE_LOCK + crtc_offsets[i], 0);
309 			}
310 			/* wait for the next frame */
311 			frame_count = radeon_get_vblank_counter(rdev, i);
312 			for (j = 0; j < rdev->usec_timeout; j++) {
313 				if (radeon_get_vblank_counter(rdev, i) != frame_count)
314 					break;
315 				udelay(1);
316 			}
317 
318 			/* XXX this is a hack to avoid strange behavior with EFI on certain systems */
319 			WREG32(AVIVO_D1CRTC_UPDATE_LOCK + crtc_offsets[i], 1);
320 			tmp = RREG32(AVIVO_D1CRTC_CONTROL + crtc_offsets[i]);
321 			tmp &= ~AVIVO_CRTC_EN;
322 			WREG32(AVIVO_D1CRTC_CONTROL + crtc_offsets[i], tmp);
323 			WREG32(AVIVO_D1CRTC_UPDATE_LOCK + crtc_offsets[i], 0);
324 			save->crtc_enabled[i] = false;
325 			/* ***** */
326 		} else {
327 			save->crtc_enabled[i] = false;
328 		}
329 	}
330 
331 	radeon_mc_wait_for_idle(rdev);
332 
333 	if (rdev->family >= CHIP_R600) {
334 		if (rdev->family >= CHIP_RV770)
335 			blackout = RREG32(R700_MC_CITF_CNTL);
336 		else
337 			blackout = RREG32(R600_CITF_CNTL);
338 		if ((blackout & R600_BLACKOUT_MASK) != R600_BLACKOUT_MASK) {
339 			/* Block CPU access */
340 			WREG32(R600_BIF_FB_EN, 0);
341 			/* blackout the MC */
342 			blackout |= R600_BLACKOUT_MASK;
343 			if (rdev->family >= CHIP_RV770)
344 				WREG32(R700_MC_CITF_CNTL, blackout);
345 			else
346 				WREG32(R600_CITF_CNTL, blackout);
347 		}
348 	}
349 	/* wait for the MC to settle */
350 	udelay(100);
351 
352 	/* lock double buffered regs */
353 	for (i = 0; i < rdev->num_crtc; i++) {
354 		if (save->crtc_enabled[i]) {
355 			tmp = RREG32(AVIVO_D1GRPH_UPDATE + crtc_offsets[i]);
356 			if (!(tmp & AVIVO_D1GRPH_UPDATE_LOCK)) {
357 				tmp |= AVIVO_D1GRPH_UPDATE_LOCK;
358 				WREG32(AVIVO_D1GRPH_UPDATE + crtc_offsets[i], tmp);
359 			}
360 			tmp = RREG32(AVIVO_D1MODE_MASTER_UPDATE_LOCK + crtc_offsets[i]);
361 			if (!(tmp & 1)) {
362 				tmp |= 1;
363 				WREG32(AVIVO_D1MODE_MASTER_UPDATE_LOCK + crtc_offsets[i], tmp);
364 			}
365 		}
366 	}
367 }
368 
369 void rv515_mc_resume(struct radeon_device *rdev, struct rv515_mc_save *save)
370 {
371 	u32 tmp, frame_count;
372 	int i, j;
373 
374 	/* update crtc base addresses */
375 	for (i = 0; i < rdev->num_crtc; i++) {
376 		if (rdev->family >= CHIP_RV770) {
377 			if (i == 0) {
378 				WREG32(R700_D1GRPH_PRIMARY_SURFACE_ADDRESS_HIGH,
379 				       upper_32_bits(rdev->mc.vram_start));
380 				WREG32(R700_D1GRPH_SECONDARY_SURFACE_ADDRESS_HIGH,
381 				       upper_32_bits(rdev->mc.vram_start));
382 			} else {
383 				WREG32(R700_D2GRPH_PRIMARY_SURFACE_ADDRESS_HIGH,
384 				       upper_32_bits(rdev->mc.vram_start));
385 				WREG32(R700_D2GRPH_SECONDARY_SURFACE_ADDRESS_HIGH,
386 				       upper_32_bits(rdev->mc.vram_start));
387 			}
388 		}
389 		WREG32(R_006110_D1GRPH_PRIMARY_SURFACE_ADDRESS + crtc_offsets[i],
390 		       (u32)rdev->mc.vram_start);
391 		WREG32(R_006118_D1GRPH_SECONDARY_SURFACE_ADDRESS + crtc_offsets[i],
392 		       (u32)rdev->mc.vram_start);
393 	}
394 	WREG32(R_000310_VGA_MEMORY_BASE_ADDRESS, (u32)rdev->mc.vram_start);
395 
396 	/* unlock regs and wait for update */
397 	for (i = 0; i < rdev->num_crtc; i++) {
398 		if (save->crtc_enabled[i]) {
399 			tmp = RREG32(AVIVO_D1MODE_MASTER_UPDATE_MODE + crtc_offsets[i]);
400 			if ((tmp & 0x3) != 0) {
401 				tmp &= ~0x3;
402 				WREG32(AVIVO_D1MODE_MASTER_UPDATE_MODE + crtc_offsets[i], tmp);
403 			}
404 			tmp = RREG32(AVIVO_D1GRPH_UPDATE + crtc_offsets[i]);
405 			if (tmp & AVIVO_D1GRPH_UPDATE_LOCK) {
406 				tmp &= ~AVIVO_D1GRPH_UPDATE_LOCK;
407 				WREG32(AVIVO_D1GRPH_UPDATE + crtc_offsets[i], tmp);
408 			}
409 			tmp = RREG32(AVIVO_D1MODE_MASTER_UPDATE_LOCK + crtc_offsets[i]);
410 			if (tmp & 1) {
411 				tmp &= ~1;
412 				WREG32(AVIVO_D1MODE_MASTER_UPDATE_LOCK + crtc_offsets[i], tmp);
413 			}
414 			for (j = 0; j < rdev->usec_timeout; j++) {
415 				tmp = RREG32(AVIVO_D1GRPH_UPDATE + crtc_offsets[i]);
416 				if ((tmp & AVIVO_D1GRPH_SURFACE_UPDATE_PENDING) == 0)
417 					break;
418 				udelay(1);
419 			}
420 		}
421 	}
422 
423 	if (rdev->family >= CHIP_R600) {
424 		/* unblackout the MC */
425 		if (rdev->family >= CHIP_RV770)
426 			tmp = RREG32(R700_MC_CITF_CNTL);
427 		else
428 			tmp = RREG32(R600_CITF_CNTL);
429 		tmp &= ~R600_BLACKOUT_MASK;
430 		if (rdev->family >= CHIP_RV770)
431 			WREG32(R700_MC_CITF_CNTL, tmp);
432 		else
433 			WREG32(R600_CITF_CNTL, tmp);
434 		/* allow CPU access */
435 		WREG32(R600_BIF_FB_EN, R600_FB_READ_EN | R600_FB_WRITE_EN);
436 	}
437 
438 	for (i = 0; i < rdev->num_crtc; i++) {
439 		if (save->crtc_enabled[i]) {
440 			tmp = RREG32(AVIVO_D1CRTC_CONTROL + crtc_offsets[i]);
441 			tmp &= ~AVIVO_CRTC_DISP_READ_REQUEST_DISABLE;
442 			WREG32(AVIVO_D1CRTC_CONTROL + crtc_offsets[i], tmp);
443 			/* wait for the next frame */
444 			frame_count = radeon_get_vblank_counter(rdev, i);
445 			for (j = 0; j < rdev->usec_timeout; j++) {
446 				if (radeon_get_vblank_counter(rdev, i) != frame_count)
447 					break;
448 				udelay(1);
449 			}
450 		}
451 	}
452 	/* Unlock vga access */
453 	WREG32(R_000328_VGA_HDP_CONTROL, save->vga_hdp_control);
454 	mdelay(1);
455 	WREG32(R_000300_VGA_RENDER_CONTROL, save->vga_render_control);
456 }
457 
458 static void rv515_mc_program(struct radeon_device *rdev)
459 {
460 	struct rv515_mc_save save;
461 
462 	/* Stops all mc clients */
463 	rv515_mc_stop(rdev, &save);
464 
465 	/* Wait for mc idle */
466 	if (rv515_mc_wait_for_idle(rdev))
467 		dev_warn(rdev->dev, "Wait MC idle timeout before updating MC.\n");
468 	/* Write VRAM size in case we are limiting it */
469 	WREG32(R_0000F8_CONFIG_MEMSIZE, rdev->mc.real_vram_size);
470 	/* Program MC, should be a 32bits limited address space */
471 	WREG32_MC(R_000001_MC_FB_LOCATION,
472 			S_000001_MC_FB_START(rdev->mc.vram_start >> 16) |
473 			S_000001_MC_FB_TOP(rdev->mc.vram_end >> 16));
474 	WREG32(R_000134_HDP_FB_LOCATION,
475 		S_000134_HDP_FB_START(rdev->mc.vram_start >> 16));
476 	if (rdev->flags & RADEON_IS_AGP) {
477 		WREG32_MC(R_000002_MC_AGP_LOCATION,
478 			S_000002_MC_AGP_START(rdev->mc.gtt_start >> 16) |
479 			S_000002_MC_AGP_TOP(rdev->mc.gtt_end >> 16));
480 		WREG32_MC(R_000003_MC_AGP_BASE, lower_32_bits(rdev->mc.agp_base));
481 		WREG32_MC(R_000004_MC_AGP_BASE_2,
482 			S_000004_AGP_BASE_ADDR_2(upper_32_bits(rdev->mc.agp_base)));
483 	} else {
484 		WREG32_MC(R_000002_MC_AGP_LOCATION, 0xFFFFFFFF);
485 		WREG32_MC(R_000003_MC_AGP_BASE, 0);
486 		WREG32_MC(R_000004_MC_AGP_BASE_2, 0);
487 	}
488 
489 	rv515_mc_resume(rdev, &save);
490 }
491 
492 void rv515_clock_startup(struct radeon_device *rdev)
493 {
494 	if (radeon_dynclks != -1 && radeon_dynclks)
495 		radeon_atom_set_clock_gating(rdev, 1);
496 	/* We need to force on some of the block */
497 	WREG32_PLL(R_00000F_CP_DYN_CNTL,
498 		RREG32_PLL(R_00000F_CP_DYN_CNTL) | S_00000F_CP_FORCEON(1));
499 	WREG32_PLL(R_000011_E2_DYN_CNTL,
500 		RREG32_PLL(R_000011_E2_DYN_CNTL) | S_000011_E2_FORCEON(1));
501 	WREG32_PLL(R_000013_IDCT_DYN_CNTL,
502 		RREG32_PLL(R_000013_IDCT_DYN_CNTL) | S_000013_IDCT_FORCEON(1));
503 }
504 
505 static int rv515_startup(struct radeon_device *rdev)
506 {
507 	int r;
508 
509 	rv515_mc_program(rdev);
510 	/* Resume clock */
511 	rv515_clock_startup(rdev);
512 	/* Initialize GPU configuration (# pipes, ...) */
513 	rv515_gpu_init(rdev);
514 	/* Initialize GART (initialize after TTM so we can allocate
515 	 * memory through TTM but finalize after TTM) */
516 	if (rdev->flags & RADEON_IS_PCIE) {
517 		r = rv370_pcie_gart_enable(rdev);
518 		if (r)
519 			return r;
520 	}
521 
522 	/* allocate wb buffer */
523 	r = radeon_wb_init(rdev);
524 	if (r)
525 		return r;
526 
527 	r = radeon_fence_driver_start_ring(rdev, RADEON_RING_TYPE_GFX_INDEX);
528 	if (r) {
529 		dev_err(rdev->dev, "failed initializing CP fences (%d).\n", r);
530 		return r;
531 	}
532 
533 	/* Enable IRQ */
534 	rs600_irq_set(rdev);
535 	rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL);
536 	/* 1M ring buffer */
537 	r = r100_cp_init(rdev, 1024 * 1024);
538 	if (r) {
539 		dev_err(rdev->dev, "failed initializing CP (%d).\n", r);
540 		return r;
541 	}
542 
543 	r = radeon_ib_pool_init(rdev);
544 	if (r) {
545 		dev_err(rdev->dev, "IB initialization failed (%d).\n", r);
546 		return r;
547 	}
548 
549 	return 0;
550 }
551 
552 int rv515_resume(struct radeon_device *rdev)
553 {
554 	int r;
555 
556 	/* Make sur GART are not working */
557 	if (rdev->flags & RADEON_IS_PCIE)
558 		rv370_pcie_gart_disable(rdev);
559 	/* Resume clock before doing reset */
560 	rv515_clock_startup(rdev);
561 	/* Reset gpu before posting otherwise ATOM will enter infinite loop */
562 	if (radeon_asic_reset(rdev)) {
563 		dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
564 			RREG32(R_000E40_RBBM_STATUS),
565 			RREG32(R_0007C0_CP_STAT));
566 	}
567 	/* post */
568 	atom_asic_init(rdev->mode_info.atom_context);
569 	/* Resume clock after posting */
570 	rv515_clock_startup(rdev);
571 	/* Initialize surface registers */
572 	radeon_surface_init(rdev);
573 
574 	rdev->accel_working = true;
575 	r =  rv515_startup(rdev);
576 	if (r) {
577 		rdev->accel_working = false;
578 	}
579 	return r;
580 }
581 
582 int rv515_suspend(struct radeon_device *rdev)
583 {
584 	r100_cp_disable(rdev);
585 	radeon_wb_disable(rdev);
586 	rs600_irq_disable(rdev);
587 	if (rdev->flags & RADEON_IS_PCIE)
588 		rv370_pcie_gart_disable(rdev);
589 	return 0;
590 }
591 
592 void rv515_set_safe_registers(struct radeon_device *rdev)
593 {
594 	rdev->config.r300.reg_safe_bm = rv515_reg_safe_bm;
595 	rdev->config.r300.reg_safe_bm_size = ARRAY_SIZE(rv515_reg_safe_bm);
596 }
597 
598 void rv515_fini(struct radeon_device *rdev)
599 {
600 	r100_cp_fini(rdev);
601 	radeon_wb_fini(rdev);
602 	radeon_ib_pool_fini(rdev);
603 	radeon_gem_fini(rdev);
604 	rv370_pcie_gart_fini(rdev);
605 	radeon_agp_fini(rdev);
606 	radeon_irq_kms_fini(rdev);
607 	radeon_fence_driver_fini(rdev);
608 	radeon_bo_fini(rdev);
609 	radeon_atombios_fini(rdev);
610 	if (rdev->bios)
611 		free(rdev->bios, M_DRM);
612 	rdev->bios = NULL;
613 }
614 
615 int rv515_init(struct radeon_device *rdev)
616 {
617 	int r;
618 
619 	/* Initialize scratch registers */
620 	radeon_scratch_init(rdev);
621 	/* Initialize surface registers */
622 	radeon_surface_init(rdev);
623 	/* TODO: disable VGA need to use VGA request */
624 	/* restore some register to sane defaults */
625 	r100_restore_sanity(rdev);
626 	/* BIOS*/
627 	if (!radeon_get_bios(rdev)) {
628 		if (ASIC_IS_AVIVO(rdev))
629 			return -EINVAL;
630 	}
631 	if (rdev->is_atom_bios) {
632 		r = radeon_atombios_init(rdev);
633 		if (r)
634 			return r;
635 	} else {
636 		dev_err(rdev->dev, "Expecting atombios for RV515 GPU\n");
637 		return -EINVAL;
638 	}
639 	/* Reset gpu before posting otherwise ATOM will enter infinite loop */
640 	if (radeon_asic_reset(rdev)) {
641 		dev_warn(rdev->dev,
642 			"GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
643 			RREG32(R_000E40_RBBM_STATUS),
644 			RREG32(R_0007C0_CP_STAT));
645 	}
646 	/* check if cards are posted or not */
647 	if (radeon_boot_test_post_card(rdev) == false)
648 		return -EINVAL;
649 	/* Initialize clocks */
650 	radeon_get_clock_info(rdev->ddev);
651 	/* initialize AGP */
652 	if (rdev->flags & RADEON_IS_AGP) {
653 		r = radeon_agp_init(rdev);
654 		if (r) {
655 			radeon_agp_disable(rdev);
656 		}
657 	}
658 	/* initialize memory controller */
659 	rv515_mc_init(rdev);
660 	rv515_debugfs(rdev);
661 	/* Fence driver */
662 	r = radeon_fence_driver_init(rdev);
663 	if (r)
664 		return r;
665 	r = radeon_irq_kms_init(rdev);
666 	if (r)
667 		return r;
668 	/* Memory manager */
669 	r = radeon_bo_init(rdev);
670 	if (r)
671 		return r;
672 	r = rv370_pcie_gart_init(rdev);
673 	if (r)
674 		return r;
675 	rv515_set_safe_registers(rdev);
676 
677 	rdev->accel_working = true;
678 	r = rv515_startup(rdev);
679 	if (r) {
680 		/* Somethings want wront with the accel init stop accel */
681 		dev_err(rdev->dev, "Disabling GPU acceleration\n");
682 		r100_cp_fini(rdev);
683 		radeon_wb_fini(rdev);
684 		radeon_ib_pool_fini(rdev);
685 		radeon_irq_kms_fini(rdev);
686 		rv370_pcie_gart_fini(rdev);
687 		radeon_agp_fini(rdev);
688 		rdev->accel_working = false;
689 	}
690 	return 0;
691 }
692 
693 void atom_rv515_force_tv_scaler(struct radeon_device *rdev, struct radeon_crtc *crtc)
694 {
695 	int index_reg = 0x6578 + crtc->crtc_offset;
696 	int data_reg = 0x657c + crtc->crtc_offset;
697 
698 	WREG32(0x659C + crtc->crtc_offset, 0x0);
699 	WREG32(0x6594 + crtc->crtc_offset, 0x705);
700 	WREG32(0x65A4 + crtc->crtc_offset, 0x10001);
701 	WREG32(0x65D8 + crtc->crtc_offset, 0x0);
702 	WREG32(0x65B0 + crtc->crtc_offset, 0x0);
703 	WREG32(0x65C0 + crtc->crtc_offset, 0x0);
704 	WREG32(0x65D4 + crtc->crtc_offset, 0x0);
705 	WREG32(index_reg, 0x0);
706 	WREG32(data_reg, 0x841880A8);
707 	WREG32(index_reg, 0x1);
708 	WREG32(data_reg, 0x84208680);
709 	WREG32(index_reg, 0x2);
710 	WREG32(data_reg, 0xBFF880B0);
711 	WREG32(index_reg, 0x100);
712 	WREG32(data_reg, 0x83D88088);
713 	WREG32(index_reg, 0x101);
714 	WREG32(data_reg, 0x84608680);
715 	WREG32(index_reg, 0x102);
716 	WREG32(data_reg, 0xBFF080D0);
717 	WREG32(index_reg, 0x200);
718 	WREG32(data_reg, 0x83988068);
719 	WREG32(index_reg, 0x201);
720 	WREG32(data_reg, 0x84A08680);
721 	WREG32(index_reg, 0x202);
722 	WREG32(data_reg, 0xBFF080F8);
723 	WREG32(index_reg, 0x300);
724 	WREG32(data_reg, 0x83588058);
725 	WREG32(index_reg, 0x301);
726 	WREG32(data_reg, 0x84E08660);
727 	WREG32(index_reg, 0x302);
728 	WREG32(data_reg, 0xBFF88120);
729 	WREG32(index_reg, 0x400);
730 	WREG32(data_reg, 0x83188040);
731 	WREG32(index_reg, 0x401);
732 	WREG32(data_reg, 0x85008660);
733 	WREG32(index_reg, 0x402);
734 	WREG32(data_reg, 0xBFF88150);
735 	WREG32(index_reg, 0x500);
736 	WREG32(data_reg, 0x82D88030);
737 	WREG32(index_reg, 0x501);
738 	WREG32(data_reg, 0x85408640);
739 	WREG32(index_reg, 0x502);
740 	WREG32(data_reg, 0xBFF88180);
741 	WREG32(index_reg, 0x600);
742 	WREG32(data_reg, 0x82A08018);
743 	WREG32(index_reg, 0x601);
744 	WREG32(data_reg, 0x85808620);
745 	WREG32(index_reg, 0x602);
746 	WREG32(data_reg, 0xBFF081B8);
747 	WREG32(index_reg, 0x700);
748 	WREG32(data_reg, 0x82608010);
749 	WREG32(index_reg, 0x701);
750 	WREG32(data_reg, 0x85A08600);
751 	WREG32(index_reg, 0x702);
752 	WREG32(data_reg, 0x800081F0);
753 	WREG32(index_reg, 0x800);
754 	WREG32(data_reg, 0x8228BFF8);
755 	WREG32(index_reg, 0x801);
756 	WREG32(data_reg, 0x85E085E0);
757 	WREG32(index_reg, 0x802);
758 	WREG32(data_reg, 0xBFF88228);
759 	WREG32(index_reg, 0x10000);
760 	WREG32(data_reg, 0x82A8BF00);
761 	WREG32(index_reg, 0x10001);
762 	WREG32(data_reg, 0x82A08CC0);
763 	WREG32(index_reg, 0x10002);
764 	WREG32(data_reg, 0x8008BEF8);
765 	WREG32(index_reg, 0x10100);
766 	WREG32(data_reg, 0x81F0BF28);
767 	WREG32(index_reg, 0x10101);
768 	WREG32(data_reg, 0x83608CA0);
769 	WREG32(index_reg, 0x10102);
770 	WREG32(data_reg, 0x8018BED0);
771 	WREG32(index_reg, 0x10200);
772 	WREG32(data_reg, 0x8148BF38);
773 	WREG32(index_reg, 0x10201);
774 	WREG32(data_reg, 0x84408C80);
775 	WREG32(index_reg, 0x10202);
776 	WREG32(data_reg, 0x8008BEB8);
777 	WREG32(index_reg, 0x10300);
778 	WREG32(data_reg, 0x80B0BF78);
779 	WREG32(index_reg, 0x10301);
780 	WREG32(data_reg, 0x85008C20);
781 	WREG32(index_reg, 0x10302);
782 	WREG32(data_reg, 0x8020BEA0);
783 	WREG32(index_reg, 0x10400);
784 	WREG32(data_reg, 0x8028BF90);
785 	WREG32(index_reg, 0x10401);
786 	WREG32(data_reg, 0x85E08BC0);
787 	WREG32(index_reg, 0x10402);
788 	WREG32(data_reg, 0x8018BE90);
789 	WREG32(index_reg, 0x10500);
790 	WREG32(data_reg, 0xBFB8BFB0);
791 	WREG32(index_reg, 0x10501);
792 	WREG32(data_reg, 0x86C08B40);
793 	WREG32(index_reg, 0x10502);
794 	WREG32(data_reg, 0x8010BE90);
795 	WREG32(index_reg, 0x10600);
796 	WREG32(data_reg, 0xBF58BFC8);
797 	WREG32(index_reg, 0x10601);
798 	WREG32(data_reg, 0x87A08AA0);
799 	WREG32(index_reg, 0x10602);
800 	WREG32(data_reg, 0x8010BE98);
801 	WREG32(index_reg, 0x10700);
802 	WREG32(data_reg, 0xBF10BFF0);
803 	WREG32(index_reg, 0x10701);
804 	WREG32(data_reg, 0x886089E0);
805 	WREG32(index_reg, 0x10702);
806 	WREG32(data_reg, 0x8018BEB0);
807 	WREG32(index_reg, 0x10800);
808 	WREG32(data_reg, 0xBED8BFE8);
809 	WREG32(index_reg, 0x10801);
810 	WREG32(data_reg, 0x89408940);
811 	WREG32(index_reg, 0x10802);
812 	WREG32(data_reg, 0xBFE8BED8);
813 	WREG32(index_reg, 0x20000);
814 	WREG32(data_reg, 0x80008000);
815 	WREG32(index_reg, 0x20001);
816 	WREG32(data_reg, 0x90008000);
817 	WREG32(index_reg, 0x20002);
818 	WREG32(data_reg, 0x80008000);
819 	WREG32(index_reg, 0x20003);
820 	WREG32(data_reg, 0x80008000);
821 	WREG32(index_reg, 0x20100);
822 	WREG32(data_reg, 0x80108000);
823 	WREG32(index_reg, 0x20101);
824 	WREG32(data_reg, 0x8FE0BF70);
825 	WREG32(index_reg, 0x20102);
826 	WREG32(data_reg, 0xBFE880C0);
827 	WREG32(index_reg, 0x20103);
828 	WREG32(data_reg, 0x80008000);
829 	WREG32(index_reg, 0x20200);
830 	WREG32(data_reg, 0x8018BFF8);
831 	WREG32(index_reg, 0x20201);
832 	WREG32(data_reg, 0x8F80BF08);
833 	WREG32(index_reg, 0x20202);
834 	WREG32(data_reg, 0xBFD081A0);
835 	WREG32(index_reg, 0x20203);
836 	WREG32(data_reg, 0xBFF88000);
837 	WREG32(index_reg, 0x20300);
838 	WREG32(data_reg, 0x80188000);
839 	WREG32(index_reg, 0x20301);
840 	WREG32(data_reg, 0x8EE0BEC0);
841 	WREG32(index_reg, 0x20302);
842 	WREG32(data_reg, 0xBFB082A0);
843 	WREG32(index_reg, 0x20303);
844 	WREG32(data_reg, 0x80008000);
845 	WREG32(index_reg, 0x20400);
846 	WREG32(data_reg, 0x80188000);
847 	WREG32(index_reg, 0x20401);
848 	WREG32(data_reg, 0x8E00BEA0);
849 	WREG32(index_reg, 0x20402);
850 	WREG32(data_reg, 0xBF8883C0);
851 	WREG32(index_reg, 0x20403);
852 	WREG32(data_reg, 0x80008000);
853 	WREG32(index_reg, 0x20500);
854 	WREG32(data_reg, 0x80188000);
855 	WREG32(index_reg, 0x20501);
856 	WREG32(data_reg, 0x8D00BE90);
857 	WREG32(index_reg, 0x20502);
858 	WREG32(data_reg, 0xBF588500);
859 	WREG32(index_reg, 0x20503);
860 	WREG32(data_reg, 0x80008008);
861 	WREG32(index_reg, 0x20600);
862 	WREG32(data_reg, 0x80188000);
863 	WREG32(index_reg, 0x20601);
864 	WREG32(data_reg, 0x8BC0BE98);
865 	WREG32(index_reg, 0x20602);
866 	WREG32(data_reg, 0xBF308660);
867 	WREG32(index_reg, 0x20603);
868 	WREG32(data_reg, 0x80008008);
869 	WREG32(index_reg, 0x20700);
870 	WREG32(data_reg, 0x80108000);
871 	WREG32(index_reg, 0x20701);
872 	WREG32(data_reg, 0x8A80BEB0);
873 	WREG32(index_reg, 0x20702);
874 	WREG32(data_reg, 0xBF0087C0);
875 	WREG32(index_reg, 0x20703);
876 	WREG32(data_reg, 0x80008008);
877 	WREG32(index_reg, 0x20800);
878 	WREG32(data_reg, 0x80108000);
879 	WREG32(index_reg, 0x20801);
880 	WREG32(data_reg, 0x8920BED0);
881 	WREG32(index_reg, 0x20802);
882 	WREG32(data_reg, 0xBED08920);
883 	WREG32(index_reg, 0x20803);
884 	WREG32(data_reg, 0x80008010);
885 	WREG32(index_reg, 0x30000);
886 	WREG32(data_reg, 0x90008000);
887 	WREG32(index_reg, 0x30001);
888 	WREG32(data_reg, 0x80008000);
889 	WREG32(index_reg, 0x30100);
890 	WREG32(data_reg, 0x8FE0BF90);
891 	WREG32(index_reg, 0x30101);
892 	WREG32(data_reg, 0xBFF880A0);
893 	WREG32(index_reg, 0x30200);
894 	WREG32(data_reg, 0x8F60BF40);
895 	WREG32(index_reg, 0x30201);
896 	WREG32(data_reg, 0xBFE88180);
897 	WREG32(index_reg, 0x30300);
898 	WREG32(data_reg, 0x8EC0BF00);
899 	WREG32(index_reg, 0x30301);
900 	WREG32(data_reg, 0xBFC88280);
901 	WREG32(index_reg, 0x30400);
902 	WREG32(data_reg, 0x8DE0BEE0);
903 	WREG32(index_reg, 0x30401);
904 	WREG32(data_reg, 0xBFA083A0);
905 	WREG32(index_reg, 0x30500);
906 	WREG32(data_reg, 0x8CE0BED0);
907 	WREG32(index_reg, 0x30501);
908 	WREG32(data_reg, 0xBF7884E0);
909 	WREG32(index_reg, 0x30600);
910 	WREG32(data_reg, 0x8BA0BED8);
911 	WREG32(index_reg, 0x30601);
912 	WREG32(data_reg, 0xBF508640);
913 	WREG32(index_reg, 0x30700);
914 	WREG32(data_reg, 0x8A60BEE8);
915 	WREG32(index_reg, 0x30701);
916 	WREG32(data_reg, 0xBF2087A0);
917 	WREG32(index_reg, 0x30800);
918 	WREG32(data_reg, 0x8900BF00);
919 	WREG32(index_reg, 0x30801);
920 	WREG32(data_reg, 0xBF008900);
921 }
922 
923 struct rv515_watermark {
924 	u32        lb_request_fifo_depth;
925 	fixed20_12 num_line_pair;
926 	fixed20_12 estimated_width;
927 	fixed20_12 worst_case_latency;
928 	fixed20_12 consumption_rate;
929 	fixed20_12 active_time;
930 	fixed20_12 dbpp;
931 	fixed20_12 priority_mark_max;
932 	fixed20_12 priority_mark;
933 	fixed20_12 sclk;
934 };
935 
936 static void rv515_crtc_bandwidth_compute(struct radeon_device *rdev,
937 				  struct radeon_crtc *crtc,
938 				  struct rv515_watermark *wm)
939 {
940 	struct drm_display_mode *mode = &crtc->base.mode;
941 	fixed20_12 a, b, c;
942 	fixed20_12 pclk, request_fifo_depth, tolerable_latency, estimated_width;
943 	fixed20_12 consumption_time, line_time, chunk_time, read_delay_latency;
944 
945 	if (!crtc->base.enabled) {
946 		/* FIXME: wouldn't it better to set priority mark to maximum */
947 		wm->lb_request_fifo_depth = 4;
948 		return;
949 	}
950 
951 	if (crtc->vsc.full > dfixed_const(2))
952 		wm->num_line_pair.full = dfixed_const(2);
953 	else
954 		wm->num_line_pair.full = dfixed_const(1);
955 
956 	b.full = dfixed_const(mode->crtc_hdisplay);
957 	c.full = dfixed_const(256);
958 	a.full = dfixed_div(b, c);
959 	request_fifo_depth.full = dfixed_mul(a, wm->num_line_pair);
960 	request_fifo_depth.full = dfixed_ceil(request_fifo_depth);
961 	if (a.full < dfixed_const(4)) {
962 		wm->lb_request_fifo_depth = 4;
963 	} else {
964 		wm->lb_request_fifo_depth = dfixed_trunc(request_fifo_depth);
965 	}
966 
967 	/* Determine consumption rate
968 	 *  pclk = pixel clock period(ns) = 1000 / (mode.clock / 1000)
969 	 *  vtaps = number of vertical taps,
970 	 *  vsc = vertical scaling ratio, defined as source/destination
971 	 *  hsc = horizontal scaling ration, defined as source/destination
972 	 */
973 	a.full = dfixed_const(mode->clock);
974 	b.full = dfixed_const(1000);
975 	a.full = dfixed_div(a, b);
976 	pclk.full = dfixed_div(b, a);
977 	if (crtc->rmx_type != RMX_OFF) {
978 		b.full = dfixed_const(2);
979 		if (crtc->vsc.full > b.full)
980 			b.full = crtc->vsc.full;
981 		b.full = dfixed_mul(b, crtc->hsc);
982 		c.full = dfixed_const(2);
983 		b.full = dfixed_div(b, c);
984 		consumption_time.full = dfixed_div(pclk, b);
985 	} else {
986 		consumption_time.full = pclk.full;
987 	}
988 	a.full = dfixed_const(1);
989 	wm->consumption_rate.full = dfixed_div(a, consumption_time);
990 
991 
992 	/* Determine line time
993 	 *  LineTime = total time for one line of displayhtotal
994 	 *  LineTime = total number of horizontal pixels
995 	 *  pclk = pixel clock period(ns)
996 	 */
997 	a.full = dfixed_const(crtc->base.mode.crtc_htotal);
998 	line_time.full = dfixed_mul(a, pclk);
999 
1000 	/* Determine active time
1001 	 *  ActiveTime = time of active region of display within one line,
1002 	 *  hactive = total number of horizontal active pixels
1003 	 *  htotal = total number of horizontal pixels
1004 	 */
1005 	a.full = dfixed_const(crtc->base.mode.crtc_htotal);
1006 	b.full = dfixed_const(crtc->base.mode.crtc_hdisplay);
1007 	wm->active_time.full = dfixed_mul(line_time, b);
1008 	wm->active_time.full = dfixed_div(wm->active_time, a);
1009 
1010 	/* Determine chunk time
1011 	 * ChunkTime = the time it takes the DCP to send one chunk of data
1012 	 * to the LB which consists of pipeline delay and inter chunk gap
1013 	 * sclk = system clock(Mhz)
1014 	 */
1015 	a.full = dfixed_const(600 * 1000);
1016 	chunk_time.full = dfixed_div(a, rdev->pm.sclk);
1017 	read_delay_latency.full = dfixed_const(1000);
1018 
1019 	/* Determine the worst case latency
1020 	 * NumLinePair = Number of line pairs to request(1=2 lines, 2=4 lines)
1021 	 * WorstCaseLatency = worst case time from urgent to when the MC starts
1022 	 *                    to return data
1023 	 * READ_DELAY_IDLE_MAX = constant of 1us
1024 	 * ChunkTime = time it takes the DCP to send one chunk of data to the LB
1025 	 *             which consists of pipeline delay and inter chunk gap
1026 	 */
1027 	if (dfixed_trunc(wm->num_line_pair) > 1) {
1028 		a.full = dfixed_const(3);
1029 		wm->worst_case_latency.full = dfixed_mul(a, chunk_time);
1030 		wm->worst_case_latency.full += read_delay_latency.full;
1031 	} else {
1032 		wm->worst_case_latency.full = chunk_time.full + read_delay_latency.full;
1033 	}
1034 
1035 	/* Determine the tolerable latency
1036 	 * TolerableLatency = Any given request has only 1 line time
1037 	 *                    for the data to be returned
1038 	 * LBRequestFifoDepth = Number of chunk requests the LB can
1039 	 *                      put into the request FIFO for a display
1040 	 *  LineTime = total time for one line of display
1041 	 *  ChunkTime = the time it takes the DCP to send one chunk
1042 	 *              of data to the LB which consists of
1043 	 *  pipeline delay and inter chunk gap
1044 	 */
1045 	if ((2+wm->lb_request_fifo_depth) >= dfixed_trunc(request_fifo_depth)) {
1046 		tolerable_latency.full = line_time.full;
1047 	} else {
1048 		tolerable_latency.full = dfixed_const(wm->lb_request_fifo_depth - 2);
1049 		tolerable_latency.full = request_fifo_depth.full - tolerable_latency.full;
1050 		tolerable_latency.full = dfixed_mul(tolerable_latency, chunk_time);
1051 		tolerable_latency.full = line_time.full - tolerable_latency.full;
1052 	}
1053 	/* We assume worst case 32bits (4 bytes) */
1054 	wm->dbpp.full = dfixed_const(2 * 16);
1055 
1056 	/* Determine the maximum priority mark
1057 	 *  width = viewport width in pixels
1058 	 */
1059 	a.full = dfixed_const(16);
1060 	wm->priority_mark_max.full = dfixed_const(crtc->base.mode.crtc_hdisplay);
1061 	wm->priority_mark_max.full = dfixed_div(wm->priority_mark_max, a);
1062 	wm->priority_mark_max.full = dfixed_ceil(wm->priority_mark_max);
1063 
1064 	/* Determine estimated width */
1065 	estimated_width.full = tolerable_latency.full - wm->worst_case_latency.full;
1066 	estimated_width.full = dfixed_div(estimated_width, consumption_time);
1067 	if (dfixed_trunc(estimated_width) > crtc->base.mode.crtc_hdisplay) {
1068 		wm->priority_mark.full = wm->priority_mark_max.full;
1069 	} else {
1070 		a.full = dfixed_const(16);
1071 		wm->priority_mark.full = dfixed_div(estimated_width, a);
1072 		wm->priority_mark.full = dfixed_ceil(wm->priority_mark);
1073 		wm->priority_mark.full = wm->priority_mark_max.full - wm->priority_mark.full;
1074 	}
1075 }
1076 
1077 void rv515_bandwidth_avivo_update(struct radeon_device *rdev)
1078 {
1079 	struct drm_display_mode *mode0 = NULL;
1080 	struct drm_display_mode *mode1 = NULL;
1081 	struct rv515_watermark wm0;
1082 	struct rv515_watermark wm1;
1083 	u32 tmp;
1084 	u32 d1mode_priority_a_cnt = MODE_PRIORITY_OFF;
1085 	u32 d2mode_priority_a_cnt = MODE_PRIORITY_OFF;
1086 	fixed20_12 priority_mark02, priority_mark12, fill_rate;
1087 	fixed20_12 a, b;
1088 
1089 	if (rdev->mode_info.crtcs[0]->base.enabled)
1090 		mode0 = &rdev->mode_info.crtcs[0]->base.mode;
1091 	if (rdev->mode_info.crtcs[1]->base.enabled)
1092 		mode1 = &rdev->mode_info.crtcs[1]->base.mode;
1093 	rs690_line_buffer_adjust(rdev, mode0, mode1);
1094 
1095 	rv515_crtc_bandwidth_compute(rdev, rdev->mode_info.crtcs[0], &wm0);
1096 	rv515_crtc_bandwidth_compute(rdev, rdev->mode_info.crtcs[1], &wm1);
1097 
1098 	tmp = wm0.lb_request_fifo_depth;
1099 	tmp |= wm1.lb_request_fifo_depth << 16;
1100 	WREG32(LB_MAX_REQ_OUTSTANDING, tmp);
1101 
1102 	if (mode0 && mode1) {
1103 		if (dfixed_trunc(wm0.dbpp) > 64)
1104 			a.full = dfixed_div(wm0.dbpp, wm0.num_line_pair);
1105 		else
1106 			a.full = wm0.num_line_pair.full;
1107 		if (dfixed_trunc(wm1.dbpp) > 64)
1108 			b.full = dfixed_div(wm1.dbpp, wm1.num_line_pair);
1109 		else
1110 			b.full = wm1.num_line_pair.full;
1111 		a.full += b.full;
1112 		fill_rate.full = dfixed_div(wm0.sclk, a);
1113 		if (wm0.consumption_rate.full > fill_rate.full) {
1114 			b.full = wm0.consumption_rate.full - fill_rate.full;
1115 			b.full = dfixed_mul(b, wm0.active_time);
1116 			a.full = dfixed_const(16);
1117 			b.full = dfixed_div(b, a);
1118 			a.full = dfixed_mul(wm0.worst_case_latency,
1119 						wm0.consumption_rate);
1120 			priority_mark02.full = a.full + b.full;
1121 		} else {
1122 			a.full = dfixed_mul(wm0.worst_case_latency,
1123 						wm0.consumption_rate);
1124 			b.full = dfixed_const(16 * 1000);
1125 			priority_mark02.full = dfixed_div(a, b);
1126 		}
1127 		if (wm1.consumption_rate.full > fill_rate.full) {
1128 			b.full = wm1.consumption_rate.full - fill_rate.full;
1129 			b.full = dfixed_mul(b, wm1.active_time);
1130 			a.full = dfixed_const(16);
1131 			b.full = dfixed_div(b, a);
1132 			a.full = dfixed_mul(wm1.worst_case_latency,
1133 						wm1.consumption_rate);
1134 			priority_mark12.full = a.full + b.full;
1135 		} else {
1136 			a.full = dfixed_mul(wm1.worst_case_latency,
1137 						wm1.consumption_rate);
1138 			b.full = dfixed_const(16 * 1000);
1139 			priority_mark12.full = dfixed_div(a, b);
1140 		}
1141 		if (wm0.priority_mark.full > priority_mark02.full)
1142 			priority_mark02.full = wm0.priority_mark.full;
1143 		if (dfixed_trunc(priority_mark02) < 0)
1144 			priority_mark02.full = 0;
1145 		if (wm0.priority_mark_max.full > priority_mark02.full)
1146 			priority_mark02.full = wm0.priority_mark_max.full;
1147 		if (wm1.priority_mark.full > priority_mark12.full)
1148 			priority_mark12.full = wm1.priority_mark.full;
1149 		if (dfixed_trunc(priority_mark12) < 0)
1150 			priority_mark12.full = 0;
1151 		if (wm1.priority_mark_max.full > priority_mark12.full)
1152 			priority_mark12.full = wm1.priority_mark_max.full;
1153 		d1mode_priority_a_cnt = dfixed_trunc(priority_mark02);
1154 		d2mode_priority_a_cnt = dfixed_trunc(priority_mark12);
1155 		if (rdev->disp_priority == 2) {
1156 			d1mode_priority_a_cnt |= MODE_PRIORITY_ALWAYS_ON;
1157 			d2mode_priority_a_cnt |= MODE_PRIORITY_ALWAYS_ON;
1158 		}
1159 	} else if (mode0) {
1160 		if (dfixed_trunc(wm0.dbpp) > 64)
1161 			a.full = dfixed_div(wm0.dbpp, wm0.num_line_pair);
1162 		else
1163 			a.full = wm0.num_line_pair.full;
1164 		fill_rate.full = dfixed_div(wm0.sclk, a);
1165 		if (wm0.consumption_rate.full > fill_rate.full) {
1166 			b.full = wm0.consumption_rate.full - fill_rate.full;
1167 			b.full = dfixed_mul(b, wm0.active_time);
1168 			a.full = dfixed_const(16);
1169 			b.full = dfixed_div(b, a);
1170 			a.full = dfixed_mul(wm0.worst_case_latency,
1171 						wm0.consumption_rate);
1172 			priority_mark02.full = a.full + b.full;
1173 		} else {
1174 			a.full = dfixed_mul(wm0.worst_case_latency,
1175 						wm0.consumption_rate);
1176 			b.full = dfixed_const(16);
1177 			priority_mark02.full = dfixed_div(a, b);
1178 		}
1179 		if (wm0.priority_mark.full > priority_mark02.full)
1180 			priority_mark02.full = wm0.priority_mark.full;
1181 		if (dfixed_trunc(priority_mark02) < 0)
1182 			priority_mark02.full = 0;
1183 		if (wm0.priority_mark_max.full > priority_mark02.full)
1184 			priority_mark02.full = wm0.priority_mark_max.full;
1185 		d1mode_priority_a_cnt = dfixed_trunc(priority_mark02);
1186 		if (rdev->disp_priority == 2)
1187 			d1mode_priority_a_cnt |= MODE_PRIORITY_ALWAYS_ON;
1188 	} else if (mode1) {
1189 		if (dfixed_trunc(wm1.dbpp) > 64)
1190 			a.full = dfixed_div(wm1.dbpp, wm1.num_line_pair);
1191 		else
1192 			a.full = wm1.num_line_pair.full;
1193 		fill_rate.full = dfixed_div(wm1.sclk, a);
1194 		if (wm1.consumption_rate.full > fill_rate.full) {
1195 			b.full = wm1.consumption_rate.full - fill_rate.full;
1196 			b.full = dfixed_mul(b, wm1.active_time);
1197 			a.full = dfixed_const(16);
1198 			b.full = dfixed_div(b, a);
1199 			a.full = dfixed_mul(wm1.worst_case_latency,
1200 						wm1.consumption_rate);
1201 			priority_mark12.full = a.full + b.full;
1202 		} else {
1203 			a.full = dfixed_mul(wm1.worst_case_latency,
1204 						wm1.consumption_rate);
1205 			b.full = dfixed_const(16 * 1000);
1206 			priority_mark12.full = dfixed_div(a, b);
1207 		}
1208 		if (wm1.priority_mark.full > priority_mark12.full)
1209 			priority_mark12.full = wm1.priority_mark.full;
1210 		if (dfixed_trunc(priority_mark12) < 0)
1211 			priority_mark12.full = 0;
1212 		if (wm1.priority_mark_max.full > priority_mark12.full)
1213 			priority_mark12.full = wm1.priority_mark_max.full;
1214 		d2mode_priority_a_cnt = dfixed_trunc(priority_mark12);
1215 		if (rdev->disp_priority == 2)
1216 			d2mode_priority_a_cnt |= MODE_PRIORITY_ALWAYS_ON;
1217 	}
1218 
1219 	WREG32(D1MODE_PRIORITY_A_CNT, d1mode_priority_a_cnt);
1220 	WREG32(D1MODE_PRIORITY_B_CNT, d1mode_priority_a_cnt);
1221 	WREG32(D2MODE_PRIORITY_A_CNT, d2mode_priority_a_cnt);
1222 	WREG32(D2MODE_PRIORITY_B_CNT, d2mode_priority_a_cnt);
1223 }
1224 
1225 void rv515_bandwidth_update(struct radeon_device *rdev)
1226 {
1227 	uint32_t tmp;
1228 	struct drm_display_mode *mode0 = NULL;
1229 	struct drm_display_mode *mode1 = NULL;
1230 
1231 	radeon_update_display_priority(rdev);
1232 
1233 	if (rdev->mode_info.crtcs[0]->base.enabled)
1234 		mode0 = &rdev->mode_info.crtcs[0]->base.mode;
1235 	if (rdev->mode_info.crtcs[1]->base.enabled)
1236 		mode1 = &rdev->mode_info.crtcs[1]->base.mode;
1237 	/*
1238 	 * Set display0/1 priority up in the memory controller for
1239 	 * modes if the user specifies HIGH for displaypriority
1240 	 * option.
1241 	 */
1242 	if ((rdev->disp_priority == 2) &&
1243 	    (rdev->family == CHIP_RV515)) {
1244 		tmp = RREG32_MC(MC_MISC_LAT_TIMER);
1245 		tmp &= ~MC_DISP1R_INIT_LAT_MASK;
1246 		tmp &= ~MC_DISP0R_INIT_LAT_MASK;
1247 		if (mode1)
1248 			tmp |= (1 << MC_DISP1R_INIT_LAT_SHIFT);
1249 		if (mode0)
1250 			tmp |= (1 << MC_DISP0R_INIT_LAT_SHIFT);
1251 		WREG32_MC(MC_MISC_LAT_TIMER, tmp);
1252 	}
1253 	rv515_bandwidth_avivo_update(rdev);
1254 }
1255