1 /*
2  * Copyright 2008 Advanced Micro Devices, Inc.
3  * Copyright 2008 Red Hat Inc.
4  * Copyright 2009 Jerome Glisse.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22  * OTHER DEALINGS IN THE SOFTWARE.
23  *
24  * Authors: Dave Airlie
25  *          Alex Deucher
26  *          Jerome Glisse
27  */
28 #include <linux/seq_file.h>
29 #include <linux/slab.h>
30 #include <drm/drmP.h>
31 #include "radeon.h"
32 #include "radeon_asic.h"
33 #include "rs400d.h"
34 
35 /* This files gather functions specifics to : rs400,rs480 */
36 static int rs400_debugfs_pcie_gart_info_init(struct radeon_device *rdev);
37 
rs400_gart_adjust_size(struct radeon_device * rdev)38 void rs400_gart_adjust_size(struct radeon_device *rdev)
39 {
40 	/* Check gart size */
41 	switch (rdev->mc.gtt_size/(1024*1024)) {
42 	case 32:
43 	case 64:
44 	case 128:
45 	case 256:
46 	case 512:
47 	case 1024:
48 	case 2048:
49 		break;
50 	default:
51 		DRM_ERROR("Unable to use IGP GART size %uM\n",
52 			  (unsigned)(rdev->mc.gtt_size >> 20));
53 		DRM_ERROR("Valid GART size for IGP are 32M,64M,128M,256M,512M,1G,2G\n");
54 		DRM_ERROR("Forcing to 32M GART size\n");
55 		rdev->mc.gtt_size = 32 * 1024 * 1024;
56 		return;
57 	}
58 }
59 
rs400_gart_tlb_flush(struct radeon_device * rdev)60 void rs400_gart_tlb_flush(struct radeon_device *rdev)
61 {
62 	uint32_t tmp;
63 	unsigned int timeout = rdev->usec_timeout;
64 
65 	WREG32_MC(RS480_GART_CACHE_CNTRL, RS480_GART_CACHE_INVALIDATE);
66 	do {
67 		tmp = RREG32_MC(RS480_GART_CACHE_CNTRL);
68 		if ((tmp & RS480_GART_CACHE_INVALIDATE) == 0)
69 			break;
70 		DRM_UDELAY(1);
71 		timeout--;
72 	} while (timeout > 0);
73 	WREG32_MC(RS480_GART_CACHE_CNTRL, 0);
74 }
75 
rs400_gart_init(struct radeon_device * rdev)76 int rs400_gart_init(struct radeon_device *rdev)
77 {
78 	int r;
79 
80 	if (rdev->gart.ptr) {
81 		WARN(1, "RS400 GART already initialized\n");
82 		return 0;
83 	}
84 	/* Check gart size */
85 	switch(rdev->mc.gtt_size / (1024 * 1024)) {
86 	case 32:
87 	case 64:
88 	case 128:
89 	case 256:
90 	case 512:
91 	case 1024:
92 	case 2048:
93 		break;
94 	default:
95 		return -EINVAL;
96 	}
97 	/* Initialize common gart structure */
98 	r = radeon_gart_init(rdev);
99 	if (r)
100 		return r;
101 	if (rs400_debugfs_pcie_gart_info_init(rdev))
102 		DRM_ERROR("Failed to register debugfs file for RS400 GART !\n");
103 	rdev->gart.table_size = rdev->gart.num_gpu_pages * 4;
104 	return radeon_gart_table_ram_alloc(rdev);
105 }
106 
rs400_gart_enable(struct radeon_device * rdev)107 int rs400_gart_enable(struct radeon_device *rdev)
108 {
109 	uint32_t size_reg;
110 	uint32_t tmp;
111 
112 	radeon_gart_restore(rdev);
113 	tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
114 	tmp |= RS690_DIS_OUT_OF_PCI_GART_ACCESS;
115 	WREG32_MC(RS690_AIC_CTRL_SCRATCH, tmp);
116 	/* Check gart size */
117 	switch(rdev->mc.gtt_size / (1024 * 1024)) {
118 	case 32:
119 		size_reg = RS480_VA_SIZE_32MB;
120 		break;
121 	case 64:
122 		size_reg = RS480_VA_SIZE_64MB;
123 		break;
124 	case 128:
125 		size_reg = RS480_VA_SIZE_128MB;
126 		break;
127 	case 256:
128 		size_reg = RS480_VA_SIZE_256MB;
129 		break;
130 	case 512:
131 		size_reg = RS480_VA_SIZE_512MB;
132 		break;
133 	case 1024:
134 		size_reg = RS480_VA_SIZE_1GB;
135 		break;
136 	case 2048:
137 		size_reg = RS480_VA_SIZE_2GB;
138 		break;
139 	default:
140 		return -EINVAL;
141 	}
142 	/* It should be fine to program it to max value */
143 	if (rdev->family == CHIP_RS690 || (rdev->family == CHIP_RS740)) {
144 		WREG32_MC(RS690_MCCFG_AGP_BASE, 0xFFFFFFFF);
145 		WREG32_MC(RS690_MCCFG_AGP_BASE_2, 0);
146 	} else {
147 		WREG32(RADEON_AGP_BASE, 0xFFFFFFFF);
148 		WREG32(RS480_AGP_BASE_2, 0);
149 	}
150 	tmp = REG_SET(RS690_MC_AGP_TOP, rdev->mc.gtt_end >> 16);
151 	tmp |= REG_SET(RS690_MC_AGP_START, rdev->mc.gtt_start >> 16);
152 	if ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740)) {
153 		WREG32_MC(RS690_MCCFG_AGP_LOCATION, tmp);
154 		tmp = RREG32(RADEON_BUS_CNTL) & ~RS600_BUS_MASTER_DIS;
155 		WREG32(RADEON_BUS_CNTL, tmp);
156 	} else {
157 		WREG32(RADEON_MC_AGP_LOCATION, tmp);
158 		tmp = RREG32(RADEON_BUS_CNTL) & ~RADEON_BUS_MASTER_DIS;
159 		WREG32(RADEON_BUS_CNTL, tmp);
160 	}
161 	/* Table should be in 32bits address space so ignore bits above. */
162 	tmp = (u32)rdev->gart.table_addr & 0xfffff000;
163 	tmp |= (upper_32_bits(rdev->gart.table_addr) & 0xff) << 4;
164 
165 	WREG32_MC(RS480_GART_BASE, tmp);
166 	/* TODO: more tweaking here */
167 	WREG32_MC(RS480_GART_FEATURE_ID,
168 		  (RS480_TLB_ENABLE |
169 		   RS480_GTW_LAC_EN | RS480_1LEVEL_GART));
170 	/* Disable snooping */
171 	WREG32_MC(RS480_AGP_MODE_CNTL,
172 		  (1 << RS480_REQ_TYPE_SNOOP_SHIFT) | RS480_REQ_TYPE_SNOOP_DIS);
173 	/* Disable AGP mode */
174 	/* FIXME: according to doc we should set HIDE_MMCFG_BAR=0,
175 	 * AGPMODE30=0 & AGP30ENHANCED=0 in NB_CNTL */
176 	if ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740)) {
177 		tmp = RREG32_MC(RS480_MC_MISC_CNTL);
178 		tmp |= RS480_GART_INDEX_REG_EN | RS690_BLOCK_GFX_D3_EN;
179 		WREG32_MC(RS480_MC_MISC_CNTL, tmp);
180 	} else {
181 		tmp = RREG32_MC(RS480_MC_MISC_CNTL);
182 		tmp |= RS480_GART_INDEX_REG_EN;
183 		WREG32_MC(RS480_MC_MISC_CNTL, tmp);
184 	}
185 	/* Enable gart */
186 	WREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE, (RS480_GART_EN | size_reg));
187 	rs400_gart_tlb_flush(rdev);
188 	DRM_INFO("PCIE GART of %uM enabled (table at 0x%016llX).\n",
189 		 (unsigned)(rdev->mc.gtt_size >> 20),
190 		 (unsigned long long)rdev->gart.table_addr);
191 	rdev->gart.ready = true;
192 	return 0;
193 }
194 
rs400_gart_disable(struct radeon_device * rdev)195 void rs400_gart_disable(struct radeon_device *rdev)
196 {
197 	uint32_t tmp;
198 
199 	tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
200 	tmp |= RS690_DIS_OUT_OF_PCI_GART_ACCESS;
201 	WREG32_MC(RS690_AIC_CTRL_SCRATCH, tmp);
202 	WREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE, 0);
203 }
204 
rs400_gart_fini(struct radeon_device * rdev)205 void rs400_gart_fini(struct radeon_device *rdev)
206 {
207 	radeon_gart_fini(rdev);
208 	rs400_gart_disable(rdev);
209 	radeon_gart_table_ram_free(rdev);
210 }
211 
212 #define RS400_PTE_WRITEABLE (1 << 2)
213 #define RS400_PTE_READABLE  (1 << 3)
214 
rs400_gart_set_page(struct radeon_device * rdev,int i,uint64_t addr)215 int rs400_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
216 {
217 	uint32_t entry;
218 	u32 *gtt = rdev->gart.ptr;
219 
220 	if (i < 0 || i > rdev->gart.num_gpu_pages) {
221 		return -EINVAL;
222 	}
223 
224 	entry = (lower_32_bits(addr) & PAGE_MASK) |
225 		((upper_32_bits(addr) & 0xff) << 4) |
226 		RS400_PTE_WRITEABLE | RS400_PTE_READABLE;
227 	entry = cpu_to_le32(entry);
228 	gtt[i] = entry;
229 	return 0;
230 }
231 
rs400_mc_wait_for_idle(struct radeon_device * rdev)232 int rs400_mc_wait_for_idle(struct radeon_device *rdev)
233 {
234 	unsigned i;
235 	uint32_t tmp;
236 
237 	for (i = 0; i < rdev->usec_timeout; i++) {
238 		/* read MC_STATUS */
239 		tmp = RREG32(RADEON_MC_STATUS);
240 		if (tmp & RADEON_MC_IDLE) {
241 			return 0;
242 		}
243 		DRM_UDELAY(1);
244 	}
245 	return -1;
246 }
247 
rs400_gpu_init(struct radeon_device * rdev)248 void rs400_gpu_init(struct radeon_device *rdev)
249 {
250 	/* FIXME: is this correct ? */
251 	r420_pipes_init(rdev);
252 	if (rs400_mc_wait_for_idle(rdev)) {
253 		printk(KERN_WARNING "rs400: Failed to wait MC idle while "
254 		       "programming pipes. Bad things might happen. %08x\n", RREG32(RADEON_MC_STATUS));
255 	}
256 }
257 
rs400_mc_init(struct radeon_device * rdev)258 void rs400_mc_init(struct radeon_device *rdev)
259 {
260 	u64 base;
261 
262 	rs400_gart_adjust_size(rdev);
263 	rdev->mc.igp_sideport_enabled = radeon_combios_sideport_present(rdev);
264 	/* DDR for all card after R300 & IGP */
265 	rdev->mc.vram_is_ddr = true;
266 	rdev->mc.vram_width = 128;
267 	r100_vram_init_sizes(rdev);
268 	base = (RREG32(RADEON_NB_TOM) & 0xffff) << 16;
269 	radeon_vram_location(rdev, &rdev->mc, base);
270 	rdev->mc.gtt_base_align = rdev->mc.gtt_size - 1;
271 	radeon_gtt_location(rdev, &rdev->mc);
272 	radeon_update_bandwidth_info(rdev);
273 }
274 
rs400_mc_rreg(struct radeon_device * rdev,uint32_t reg)275 uint32_t rs400_mc_rreg(struct radeon_device *rdev, uint32_t reg)
276 {
277 	uint32_t r;
278 
279 	WREG32(RS480_NB_MC_INDEX, reg & 0xff);
280 	r = RREG32(RS480_NB_MC_DATA);
281 	WREG32(RS480_NB_MC_INDEX, 0xff);
282 	return r;
283 }
284 
rs400_mc_wreg(struct radeon_device * rdev,uint32_t reg,uint32_t v)285 void rs400_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
286 {
287 	WREG32(RS480_NB_MC_INDEX, ((reg) & 0xff) | RS480_NB_MC_IND_WR_EN);
288 	WREG32(RS480_NB_MC_DATA, (v));
289 	WREG32(RS480_NB_MC_INDEX, 0xff);
290 }
291 
292 #if defined(CONFIG_DEBUG_FS)
rs400_debugfs_gart_info(struct seq_file * m,void * data)293 static int rs400_debugfs_gart_info(struct seq_file *m, void *data)
294 {
295 	struct drm_info_node *node = (struct drm_info_node *) m->private;
296 	struct drm_device *dev = node->minor->dev;
297 	struct radeon_device *rdev = dev->dev_private;
298 	uint32_t tmp;
299 
300 	tmp = RREG32(RADEON_HOST_PATH_CNTL);
301 	seq_printf(m, "HOST_PATH_CNTL 0x%08x\n", tmp);
302 	tmp = RREG32(RADEON_BUS_CNTL);
303 	seq_printf(m, "BUS_CNTL 0x%08x\n", tmp);
304 	tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
305 	seq_printf(m, "AIC_CTRL_SCRATCH 0x%08x\n", tmp);
306 	if (rdev->family == CHIP_RS690 || (rdev->family == CHIP_RS740)) {
307 		tmp = RREG32_MC(RS690_MCCFG_AGP_BASE);
308 		seq_printf(m, "MCCFG_AGP_BASE 0x%08x\n", tmp);
309 		tmp = RREG32_MC(RS690_MCCFG_AGP_BASE_2);
310 		seq_printf(m, "MCCFG_AGP_BASE_2 0x%08x\n", tmp);
311 		tmp = RREG32_MC(RS690_MCCFG_AGP_LOCATION);
312 		seq_printf(m, "MCCFG_AGP_LOCATION 0x%08x\n", tmp);
313 		tmp = RREG32_MC(RS690_MCCFG_FB_LOCATION);
314 		seq_printf(m, "MCCFG_FB_LOCATION 0x%08x\n", tmp);
315 		tmp = RREG32(RS690_HDP_FB_LOCATION);
316 		seq_printf(m, "HDP_FB_LOCATION 0x%08x\n", tmp);
317 	} else {
318 		tmp = RREG32(RADEON_AGP_BASE);
319 		seq_printf(m, "AGP_BASE 0x%08x\n", tmp);
320 		tmp = RREG32(RS480_AGP_BASE_2);
321 		seq_printf(m, "AGP_BASE_2 0x%08x\n", tmp);
322 		tmp = RREG32(RADEON_MC_AGP_LOCATION);
323 		seq_printf(m, "MC_AGP_LOCATION 0x%08x\n", tmp);
324 	}
325 	tmp = RREG32_MC(RS480_GART_BASE);
326 	seq_printf(m, "GART_BASE 0x%08x\n", tmp);
327 	tmp = RREG32_MC(RS480_GART_FEATURE_ID);
328 	seq_printf(m, "GART_FEATURE_ID 0x%08x\n", tmp);
329 	tmp = RREG32_MC(RS480_AGP_MODE_CNTL);
330 	seq_printf(m, "AGP_MODE_CONTROL 0x%08x\n", tmp);
331 	tmp = RREG32_MC(RS480_MC_MISC_CNTL);
332 	seq_printf(m, "MC_MISC_CNTL 0x%08x\n", tmp);
333 	tmp = RREG32_MC(0x5F);
334 	seq_printf(m, "MC_MISC_UMA_CNTL 0x%08x\n", tmp);
335 	tmp = RREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE);
336 	seq_printf(m, "AGP_ADDRESS_SPACE_SIZE 0x%08x\n", tmp);
337 	tmp = RREG32_MC(RS480_GART_CACHE_CNTRL);
338 	seq_printf(m, "GART_CACHE_CNTRL 0x%08x\n", tmp);
339 	tmp = RREG32_MC(0x3B);
340 	seq_printf(m, "MC_GART_ERROR_ADDRESS 0x%08x\n", tmp);
341 	tmp = RREG32_MC(0x3C);
342 	seq_printf(m, "MC_GART_ERROR_ADDRESS_HI 0x%08x\n", tmp);
343 	tmp = RREG32_MC(0x30);
344 	seq_printf(m, "GART_ERROR_0 0x%08x\n", tmp);
345 	tmp = RREG32_MC(0x31);
346 	seq_printf(m, "GART_ERROR_1 0x%08x\n", tmp);
347 	tmp = RREG32_MC(0x32);
348 	seq_printf(m, "GART_ERROR_2 0x%08x\n", tmp);
349 	tmp = RREG32_MC(0x33);
350 	seq_printf(m, "GART_ERROR_3 0x%08x\n", tmp);
351 	tmp = RREG32_MC(0x34);
352 	seq_printf(m, "GART_ERROR_4 0x%08x\n", tmp);
353 	tmp = RREG32_MC(0x35);
354 	seq_printf(m, "GART_ERROR_5 0x%08x\n", tmp);
355 	tmp = RREG32_MC(0x36);
356 	seq_printf(m, "GART_ERROR_6 0x%08x\n", tmp);
357 	tmp = RREG32_MC(0x37);
358 	seq_printf(m, "GART_ERROR_7 0x%08x\n", tmp);
359 	return 0;
360 }
361 
362 static struct drm_info_list rs400_gart_info_list[] = {
363 	{"rs400_gart_info", rs400_debugfs_gart_info, 0, NULL},
364 };
365 #endif
366 
rs400_debugfs_pcie_gart_info_init(struct radeon_device * rdev)367 static int rs400_debugfs_pcie_gart_info_init(struct radeon_device *rdev)
368 {
369 #if defined(CONFIG_DEBUG_FS)
370 	return radeon_debugfs_add_files(rdev, rs400_gart_info_list, 1);
371 #else
372 	return 0;
373 #endif
374 }
375 
rs400_mc_program(struct radeon_device * rdev)376 void rs400_mc_program(struct radeon_device *rdev)
377 {
378 	struct r100_mc_save save;
379 
380 	/* Stops all mc clients */
381 	r100_mc_stop(rdev, &save);
382 
383 	/* Wait for mc idle */
384 	if (rs400_mc_wait_for_idle(rdev))
385 		dev_warn(rdev->dev, "rs400: Wait MC idle timeout before updating MC.\n");
386 	WREG32(R_000148_MC_FB_LOCATION,
387 		S_000148_MC_FB_START(rdev->mc.vram_start >> 16) |
388 		S_000148_MC_FB_TOP(rdev->mc.vram_end >> 16));
389 
390 	r100_mc_resume(rdev, &save);
391 }
392 
rs400_startup(struct radeon_device * rdev)393 static int rs400_startup(struct radeon_device *rdev)
394 {
395 	int r;
396 
397 	r100_set_common_regs(rdev);
398 
399 	rs400_mc_program(rdev);
400 	/* Resume clock */
401 	r300_clock_startup(rdev);
402 	/* Initialize GPU configuration (# pipes, ...) */
403 	rs400_gpu_init(rdev);
404 	r100_enable_bm(rdev);
405 	/* Initialize GART (initialize after TTM so we can allocate
406 	 * memory through TTM but finalize after TTM) */
407 	r = rs400_gart_enable(rdev);
408 	if (r)
409 		return r;
410 
411 	/* allocate wb buffer */
412 	r = radeon_wb_init(rdev);
413 	if (r)
414 		return r;
415 
416 	r = radeon_fence_driver_start_ring(rdev, RADEON_RING_TYPE_GFX_INDEX);
417 	if (r) {
418 		dev_err(rdev->dev, "failed initializing CP fences (%d).\n", r);
419 		return r;
420 	}
421 
422 	/* Enable IRQ */
423 	if (!rdev->irq.installed) {
424 		r = radeon_irq_kms_init(rdev);
425 		if (r)
426 			return r;
427 	}
428 
429 	r100_irq_set(rdev);
430 	rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL);
431 	/* 1M ring buffer */
432 	r = r100_cp_init(rdev, 1024 * 1024);
433 	if (r) {
434 		dev_err(rdev->dev, "failed initializing CP (%d).\n", r);
435 		return r;
436 	}
437 
438 	r = radeon_ib_pool_start(rdev);
439 	if (r)
440 		return r;
441 
442 	r = radeon_ib_test(rdev, RADEON_RING_TYPE_GFX_INDEX, &rdev->ring[RADEON_RING_TYPE_GFX_INDEX]);
443 	if (r) {
444 		dev_err(rdev->dev, "failed testing IB (%d).\n", r);
445 		rdev->accel_working = false;
446 		return r;
447 	}
448 
449 	return 0;
450 }
451 
rs400_resume(struct radeon_device * rdev)452 int rs400_resume(struct radeon_device *rdev)
453 {
454 	int r;
455 
456 	/* Make sur GART are not working */
457 	rs400_gart_disable(rdev);
458 	/* Resume clock before doing reset */
459 	r300_clock_startup(rdev);
460 	/* setup MC before calling post tables */
461 	rs400_mc_program(rdev);
462 	/* Reset gpu before posting otherwise ATOM will enter infinite loop */
463 	if (radeon_asic_reset(rdev)) {
464 		dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
465 			RREG32(R_000E40_RBBM_STATUS),
466 			RREG32(R_0007C0_CP_STAT));
467 	}
468 	/* post */
469 	radeon_combios_asic_init(rdev->ddev);
470 	/* Resume clock after posting */
471 	r300_clock_startup(rdev);
472 	/* Initialize surface registers */
473 	radeon_surface_init(rdev);
474 
475 	rdev->accel_working = true;
476 	r = rs400_startup(rdev);
477 	if (r) {
478 		rdev->accel_working = false;
479 	}
480 	return r;
481 }
482 
rs400_suspend(struct radeon_device * rdev)483 int rs400_suspend(struct radeon_device *rdev)
484 {
485 	radeon_ib_pool_suspend(rdev);
486 	r100_cp_disable(rdev);
487 	radeon_wb_disable(rdev);
488 	r100_irq_disable(rdev);
489 	rs400_gart_disable(rdev);
490 	return 0;
491 }
492 
rs400_fini(struct radeon_device * rdev)493 void rs400_fini(struct radeon_device *rdev)
494 {
495 	r100_cp_fini(rdev);
496 	radeon_wb_fini(rdev);
497 	r100_ib_fini(rdev);
498 	radeon_gem_fini(rdev);
499 	rs400_gart_fini(rdev);
500 	radeon_irq_kms_fini(rdev);
501 	radeon_fence_driver_fini(rdev);
502 	radeon_bo_fini(rdev);
503 	radeon_atombios_fini(rdev);
504 	kfree(rdev->bios);
505 	rdev->bios = NULL;
506 }
507 
rs400_init(struct radeon_device * rdev)508 int rs400_init(struct radeon_device *rdev)
509 {
510 	int r;
511 
512 	/* Disable VGA */
513 	r100_vga_render_disable(rdev);
514 	/* Initialize scratch registers */
515 	radeon_scratch_init(rdev);
516 	/* Initialize surface registers */
517 	radeon_surface_init(rdev);
518 	/* TODO: disable VGA need to use VGA request */
519 	/* restore some register to sane defaults */
520 	r100_restore_sanity(rdev);
521 	/* BIOS*/
522 	if (!radeon_get_bios(rdev)) {
523 		if (ASIC_IS_AVIVO(rdev))
524 			return -EINVAL;
525 	}
526 	if (rdev->is_atom_bios) {
527 		dev_err(rdev->dev, "Expecting combios for RS400/RS480 GPU\n");
528 		return -EINVAL;
529 	} else {
530 		r = radeon_combios_init(rdev);
531 		if (r)
532 			return r;
533 	}
534 	/* Reset gpu before posting otherwise ATOM will enter infinite loop */
535 	if (radeon_asic_reset(rdev)) {
536 		dev_warn(rdev->dev,
537 			"GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
538 			RREG32(R_000E40_RBBM_STATUS),
539 			RREG32(R_0007C0_CP_STAT));
540 	}
541 	/* check if cards are posted or not */
542 	if (radeon_boot_test_post_card(rdev) == false)
543 		return -EINVAL;
544 
545 	/* Initialize clocks */
546 	radeon_get_clock_info(rdev->ddev);
547 	/* initialize memory controller */
548 	rs400_mc_init(rdev);
549 	/* Fence driver */
550 	r = radeon_fence_driver_init(rdev);
551 	if (r)
552 		return r;
553 	/* Memory manager */
554 	r = radeon_bo_init(rdev);
555 	if (r)
556 		return r;
557 	r = rs400_gart_init(rdev);
558 	if (r)
559 		return r;
560 	r300_set_reg_safe(rdev);
561 
562 	r = radeon_ib_pool_init(rdev);
563 	rdev->accel_working = true;
564 	if (r) {
565 		dev_err(rdev->dev, "IB initialization failed (%d).\n", r);
566 		rdev->accel_working = false;
567 	}
568 
569 	r = rs400_startup(rdev);
570 	if (r) {
571 		/* Somethings want wront with the accel init stop accel */
572 		dev_err(rdev->dev, "Disabling GPU acceleration\n");
573 		r100_cp_fini(rdev);
574 		radeon_wb_fini(rdev);
575 		r100_ib_fini(rdev);
576 		rs400_gart_fini(rdev);
577 		radeon_irq_kms_fini(rdev);
578 		rdev->accel_working = false;
579 	}
580 	return 0;
581 }
582