xref: /openbmc/linux/drivers/gpu/drm/radeon/rs400.c (revision 3a35093a)
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 
29 #include <linux/seq_file.h>
30 #include <linux/slab.h>
31 
32 #include <drm/drm_debugfs.h>
33 #include <drm/drm_device.h>
34 #include <drm/drm_file.h>
35 
36 #include "radeon.h"
37 #include "radeon_asic.h"
38 #include "rs400d.h"
39 
40 /* This files gather functions specifics to : rs400,rs480 */
41 static int rs400_debugfs_pcie_gart_info_init(struct radeon_device *rdev);
42 
43 void rs400_gart_adjust_size(struct radeon_device *rdev)
44 {
45 	/* Check gart size */
46 	switch (rdev->mc.gtt_size/(1024*1024)) {
47 	case 32:
48 	case 64:
49 	case 128:
50 	case 256:
51 	case 512:
52 	case 1024:
53 	case 2048:
54 		break;
55 	default:
56 		DRM_ERROR("Unable to use IGP GART size %uM\n",
57 			  (unsigned)(rdev->mc.gtt_size >> 20));
58 		DRM_ERROR("Valid GART size for IGP are 32M,64M,128M,256M,512M,1G,2G\n");
59 		DRM_ERROR("Forcing to 32M GART size\n");
60 		rdev->mc.gtt_size = 32 * 1024 * 1024;
61 		return;
62 	}
63 }
64 
65 void rs400_gart_tlb_flush(struct radeon_device *rdev)
66 {
67 	uint32_t tmp;
68 	unsigned int timeout = rdev->usec_timeout;
69 
70 	WREG32_MC(RS480_GART_CACHE_CNTRL, RS480_GART_CACHE_INVALIDATE);
71 	do {
72 		tmp = RREG32_MC(RS480_GART_CACHE_CNTRL);
73 		if ((tmp & RS480_GART_CACHE_INVALIDATE) == 0)
74 			break;
75 		udelay(1);
76 		timeout--;
77 	} while (timeout > 0);
78 	WREG32_MC(RS480_GART_CACHE_CNTRL, 0);
79 }
80 
81 int rs400_gart_init(struct radeon_device *rdev)
82 {
83 	int r;
84 
85 	if (rdev->gart.ptr) {
86 		WARN(1, "RS400 GART already initialized\n");
87 		return 0;
88 	}
89 	/* Check gart size */
90 	switch(rdev->mc.gtt_size / (1024 * 1024)) {
91 	case 32:
92 	case 64:
93 	case 128:
94 	case 256:
95 	case 512:
96 	case 1024:
97 	case 2048:
98 		break;
99 	default:
100 		return -EINVAL;
101 	}
102 	/* Initialize common gart structure */
103 	r = radeon_gart_init(rdev);
104 	if (r)
105 		return r;
106 	if (rs400_debugfs_pcie_gart_info_init(rdev))
107 		DRM_ERROR("Failed to register debugfs file for RS400 GART !\n");
108 	rdev->gart.table_size = rdev->gart.num_gpu_pages * 4;
109 	return radeon_gart_table_ram_alloc(rdev);
110 }
111 
112 int rs400_gart_enable(struct radeon_device *rdev)
113 {
114 	uint32_t size_reg;
115 	uint32_t tmp;
116 
117 	tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
118 	tmp |= RS690_DIS_OUT_OF_PCI_GART_ACCESS;
119 	WREG32_MC(RS690_AIC_CTRL_SCRATCH, tmp);
120 	/* Check gart size */
121 	switch(rdev->mc.gtt_size / (1024 * 1024)) {
122 	case 32:
123 		size_reg = RS480_VA_SIZE_32MB;
124 		break;
125 	case 64:
126 		size_reg = RS480_VA_SIZE_64MB;
127 		break;
128 	case 128:
129 		size_reg = RS480_VA_SIZE_128MB;
130 		break;
131 	case 256:
132 		size_reg = RS480_VA_SIZE_256MB;
133 		break;
134 	case 512:
135 		size_reg = RS480_VA_SIZE_512MB;
136 		break;
137 	case 1024:
138 		size_reg = RS480_VA_SIZE_1GB;
139 		break;
140 	case 2048:
141 		size_reg = RS480_VA_SIZE_2GB;
142 		break;
143 	default:
144 		return -EINVAL;
145 	}
146 	/* It should be fine to program it to max value */
147 	if (rdev->family == CHIP_RS690 || (rdev->family == CHIP_RS740)) {
148 		WREG32_MC(RS690_MCCFG_AGP_BASE, 0xFFFFFFFF);
149 		WREG32_MC(RS690_MCCFG_AGP_BASE_2, 0);
150 	} else {
151 		WREG32(RADEON_AGP_BASE, 0xFFFFFFFF);
152 		WREG32(RS480_AGP_BASE_2, 0);
153 	}
154 	tmp = REG_SET(RS690_MC_AGP_TOP, rdev->mc.gtt_end >> 16);
155 	tmp |= REG_SET(RS690_MC_AGP_START, rdev->mc.gtt_start >> 16);
156 	if ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740)) {
157 		WREG32_MC(RS690_MCCFG_AGP_LOCATION, tmp);
158 		tmp = RREG32(RADEON_BUS_CNTL) & ~RS600_BUS_MASTER_DIS;
159 		WREG32(RADEON_BUS_CNTL, tmp);
160 	} else {
161 		WREG32(RADEON_MC_AGP_LOCATION, tmp);
162 		tmp = RREG32(RADEON_BUS_CNTL) & ~RADEON_BUS_MASTER_DIS;
163 		WREG32(RADEON_BUS_CNTL, tmp);
164 	}
165 	/* Table should be in 32bits address space so ignore bits above. */
166 	tmp = (u32)rdev->gart.table_addr & 0xfffff000;
167 	tmp |= (upper_32_bits(rdev->gart.table_addr) & 0xff) << 4;
168 
169 	WREG32_MC(RS480_GART_BASE, tmp);
170 	/* TODO: more tweaking here */
171 	WREG32_MC(RS480_GART_FEATURE_ID,
172 		  (RS480_TLB_ENABLE |
173 		   RS480_GTW_LAC_EN | RS480_1LEVEL_GART));
174 	/* Disable snooping */
175 	WREG32_MC(RS480_AGP_MODE_CNTL,
176 		  (1 << RS480_REQ_TYPE_SNOOP_SHIFT) | RS480_REQ_TYPE_SNOOP_DIS);
177 	/* Disable AGP mode */
178 	/* FIXME: according to doc we should set HIDE_MMCFG_BAR=0,
179 	 * AGPMODE30=0 & AGP30ENHANCED=0 in NB_CNTL */
180 	if ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740)) {
181 		tmp = RREG32_MC(RS480_MC_MISC_CNTL);
182 		tmp |= RS480_GART_INDEX_REG_EN | RS690_BLOCK_GFX_D3_EN;
183 		WREG32_MC(RS480_MC_MISC_CNTL, tmp);
184 	} else {
185 		tmp = RREG32_MC(RS480_MC_MISC_CNTL);
186 		tmp |= RS480_GART_INDEX_REG_EN;
187 		WREG32_MC(RS480_MC_MISC_CNTL, tmp);
188 	}
189 	/* Enable gart */
190 	WREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE, (RS480_GART_EN | size_reg));
191 	rs400_gart_tlb_flush(rdev);
192 	DRM_INFO("PCIE GART of %uM enabled (table at 0x%016llX).\n",
193 		 (unsigned)(rdev->mc.gtt_size >> 20),
194 		 (unsigned long long)rdev->gart.table_addr);
195 	rdev->gart.ready = true;
196 	return 0;
197 }
198 
199 void rs400_gart_disable(struct radeon_device *rdev)
200 {
201 	uint32_t tmp;
202 
203 	tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
204 	tmp |= RS690_DIS_OUT_OF_PCI_GART_ACCESS;
205 	WREG32_MC(RS690_AIC_CTRL_SCRATCH, tmp);
206 	WREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE, 0);
207 }
208 
209 void rs400_gart_fini(struct radeon_device *rdev)
210 {
211 	radeon_gart_fini(rdev);
212 	rs400_gart_disable(rdev);
213 	radeon_gart_table_ram_free(rdev);
214 }
215 
216 #define RS400_PTE_UNSNOOPED (1 << 0)
217 #define RS400_PTE_WRITEABLE (1 << 2)
218 #define RS400_PTE_READABLE  (1 << 3)
219 
220 uint64_t rs400_gart_get_page_entry(uint64_t addr, uint32_t flags)
221 {
222 	uint32_t entry;
223 
224 	entry = (lower_32_bits(addr) & PAGE_MASK) |
225 		((upper_32_bits(addr) & 0xff) << 4);
226 	if (flags & RADEON_GART_PAGE_READ)
227 		entry |= RS400_PTE_READABLE;
228 	if (flags & RADEON_GART_PAGE_WRITE)
229 		entry |= RS400_PTE_WRITEABLE;
230 	if (!(flags & RADEON_GART_PAGE_SNOOP))
231 		entry |= RS400_PTE_UNSNOOPED;
232 	return entry;
233 }
234 
235 void rs400_gart_set_page(struct radeon_device *rdev, unsigned i,
236 			 uint64_t entry)
237 {
238 	u32 *gtt = rdev->gart.ptr;
239 	gtt[i] = cpu_to_le32(lower_32_bits(entry));
240 }
241 
242 int rs400_mc_wait_for_idle(struct radeon_device *rdev)
243 {
244 	unsigned i;
245 	uint32_t tmp;
246 
247 	for (i = 0; i < rdev->usec_timeout; i++) {
248 		/* read MC_STATUS */
249 		tmp = RREG32(RADEON_MC_STATUS);
250 		if (tmp & RADEON_MC_IDLE) {
251 			return 0;
252 		}
253 		udelay(1);
254 	}
255 	return -1;
256 }
257 
258 static void rs400_gpu_init(struct radeon_device *rdev)
259 {
260 	/* FIXME: is this correct ? */
261 	r420_pipes_init(rdev);
262 	if (rs400_mc_wait_for_idle(rdev)) {
263 		pr_warn("rs400: Failed to wait MC idle while programming pipes. Bad things might happen. %08x\n",
264 			RREG32(RADEON_MC_STATUS));
265 	}
266 }
267 
268 static void rs400_mc_init(struct radeon_device *rdev)
269 {
270 	u64 base;
271 
272 	rs400_gart_adjust_size(rdev);
273 	rdev->mc.igp_sideport_enabled = radeon_combios_sideport_present(rdev);
274 	/* DDR for all card after R300 & IGP */
275 	rdev->mc.vram_is_ddr = true;
276 	rdev->mc.vram_width = 128;
277 	r100_vram_init_sizes(rdev);
278 	base = (RREG32(RADEON_NB_TOM) & 0xffff) << 16;
279 	radeon_vram_location(rdev, &rdev->mc, base);
280 	rdev->mc.gtt_base_align = rdev->mc.gtt_size - 1;
281 	radeon_gtt_location(rdev, &rdev->mc);
282 	radeon_update_bandwidth_info(rdev);
283 }
284 
285 uint32_t rs400_mc_rreg(struct radeon_device *rdev, uint32_t reg)
286 {
287 	unsigned long flags;
288 	uint32_t r;
289 
290 	spin_lock_irqsave(&rdev->mc_idx_lock, flags);
291 	WREG32(RS480_NB_MC_INDEX, reg & 0xff);
292 	r = RREG32(RS480_NB_MC_DATA);
293 	WREG32(RS480_NB_MC_INDEX, 0xff);
294 	spin_unlock_irqrestore(&rdev->mc_idx_lock, flags);
295 	return r;
296 }
297 
298 void rs400_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
299 {
300 	unsigned long flags;
301 
302 	spin_lock_irqsave(&rdev->mc_idx_lock, flags);
303 	WREG32(RS480_NB_MC_INDEX, ((reg) & 0xff) | RS480_NB_MC_IND_WR_EN);
304 	WREG32(RS480_NB_MC_DATA, (v));
305 	WREG32(RS480_NB_MC_INDEX, 0xff);
306 	spin_unlock_irqrestore(&rdev->mc_idx_lock, flags);
307 }
308 
309 #if defined(CONFIG_DEBUG_FS)
310 static int rs400_debugfs_gart_info(struct seq_file *m, void *data)
311 {
312 	struct drm_info_node *node = (struct drm_info_node *) m->private;
313 	struct drm_device *dev = node->minor->dev;
314 	struct radeon_device *rdev = dev->dev_private;
315 	uint32_t tmp;
316 
317 	tmp = RREG32(RADEON_HOST_PATH_CNTL);
318 	seq_printf(m, "HOST_PATH_CNTL 0x%08x\n", tmp);
319 	tmp = RREG32(RADEON_BUS_CNTL);
320 	seq_printf(m, "BUS_CNTL 0x%08x\n", tmp);
321 	tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
322 	seq_printf(m, "AIC_CTRL_SCRATCH 0x%08x\n", tmp);
323 	if (rdev->family == CHIP_RS690 || (rdev->family == CHIP_RS740)) {
324 		tmp = RREG32_MC(RS690_MCCFG_AGP_BASE);
325 		seq_printf(m, "MCCFG_AGP_BASE 0x%08x\n", tmp);
326 		tmp = RREG32_MC(RS690_MCCFG_AGP_BASE_2);
327 		seq_printf(m, "MCCFG_AGP_BASE_2 0x%08x\n", tmp);
328 		tmp = RREG32_MC(RS690_MCCFG_AGP_LOCATION);
329 		seq_printf(m, "MCCFG_AGP_LOCATION 0x%08x\n", tmp);
330 		tmp = RREG32_MC(RS690_MCCFG_FB_LOCATION);
331 		seq_printf(m, "MCCFG_FB_LOCATION 0x%08x\n", tmp);
332 		tmp = RREG32(RS690_HDP_FB_LOCATION);
333 		seq_printf(m, "HDP_FB_LOCATION 0x%08x\n", tmp);
334 	} else {
335 		tmp = RREG32(RADEON_AGP_BASE);
336 		seq_printf(m, "AGP_BASE 0x%08x\n", tmp);
337 		tmp = RREG32(RS480_AGP_BASE_2);
338 		seq_printf(m, "AGP_BASE_2 0x%08x\n", tmp);
339 		tmp = RREG32(RADEON_MC_AGP_LOCATION);
340 		seq_printf(m, "MC_AGP_LOCATION 0x%08x\n", tmp);
341 	}
342 	tmp = RREG32_MC(RS480_GART_BASE);
343 	seq_printf(m, "GART_BASE 0x%08x\n", tmp);
344 	tmp = RREG32_MC(RS480_GART_FEATURE_ID);
345 	seq_printf(m, "GART_FEATURE_ID 0x%08x\n", tmp);
346 	tmp = RREG32_MC(RS480_AGP_MODE_CNTL);
347 	seq_printf(m, "AGP_MODE_CONTROL 0x%08x\n", tmp);
348 	tmp = RREG32_MC(RS480_MC_MISC_CNTL);
349 	seq_printf(m, "MC_MISC_CNTL 0x%08x\n", tmp);
350 	tmp = RREG32_MC(0x5F);
351 	seq_printf(m, "MC_MISC_UMA_CNTL 0x%08x\n", tmp);
352 	tmp = RREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE);
353 	seq_printf(m, "AGP_ADDRESS_SPACE_SIZE 0x%08x\n", tmp);
354 	tmp = RREG32_MC(RS480_GART_CACHE_CNTRL);
355 	seq_printf(m, "GART_CACHE_CNTRL 0x%08x\n", tmp);
356 	tmp = RREG32_MC(0x3B);
357 	seq_printf(m, "MC_GART_ERROR_ADDRESS 0x%08x\n", tmp);
358 	tmp = RREG32_MC(0x3C);
359 	seq_printf(m, "MC_GART_ERROR_ADDRESS_HI 0x%08x\n", tmp);
360 	tmp = RREG32_MC(0x30);
361 	seq_printf(m, "GART_ERROR_0 0x%08x\n", tmp);
362 	tmp = RREG32_MC(0x31);
363 	seq_printf(m, "GART_ERROR_1 0x%08x\n", tmp);
364 	tmp = RREG32_MC(0x32);
365 	seq_printf(m, "GART_ERROR_2 0x%08x\n", tmp);
366 	tmp = RREG32_MC(0x33);
367 	seq_printf(m, "GART_ERROR_3 0x%08x\n", tmp);
368 	tmp = RREG32_MC(0x34);
369 	seq_printf(m, "GART_ERROR_4 0x%08x\n", tmp);
370 	tmp = RREG32_MC(0x35);
371 	seq_printf(m, "GART_ERROR_5 0x%08x\n", tmp);
372 	tmp = RREG32_MC(0x36);
373 	seq_printf(m, "GART_ERROR_6 0x%08x\n", tmp);
374 	tmp = RREG32_MC(0x37);
375 	seq_printf(m, "GART_ERROR_7 0x%08x\n", tmp);
376 	return 0;
377 }
378 
379 static struct drm_info_list rs400_gart_info_list[] = {
380 	{"rs400_gart_info", rs400_debugfs_gart_info, 0, NULL},
381 };
382 #endif
383 
384 static int rs400_debugfs_pcie_gart_info_init(struct radeon_device *rdev)
385 {
386 #if defined(CONFIG_DEBUG_FS)
387 	return radeon_debugfs_add_files(rdev, rs400_gart_info_list, 1);
388 #else
389 	return 0;
390 #endif
391 }
392 
393 static void rs400_mc_program(struct radeon_device *rdev)
394 {
395 	struct r100_mc_save save;
396 
397 	/* Stops all mc clients */
398 	r100_mc_stop(rdev, &save);
399 
400 	/* Wait for mc idle */
401 	if (rs400_mc_wait_for_idle(rdev))
402 		dev_warn(rdev->dev, "rs400: Wait MC idle timeout before updating MC.\n");
403 	WREG32(R_000148_MC_FB_LOCATION,
404 		S_000148_MC_FB_START(rdev->mc.vram_start >> 16) |
405 		S_000148_MC_FB_TOP(rdev->mc.vram_end >> 16));
406 
407 	r100_mc_resume(rdev, &save);
408 }
409 
410 static int rs400_startup(struct radeon_device *rdev)
411 {
412 	int r;
413 
414 	r100_set_common_regs(rdev);
415 
416 	rs400_mc_program(rdev);
417 	/* Resume clock */
418 	r300_clock_startup(rdev);
419 	/* Initialize GPU configuration (# pipes, ...) */
420 	rs400_gpu_init(rdev);
421 	r100_enable_bm(rdev);
422 	/* Initialize GART (initialize after TTM so we can allocate
423 	 * memory through TTM but finalize after TTM) */
424 	r = rs400_gart_enable(rdev);
425 	if (r)
426 		return r;
427 
428 	/* allocate wb buffer */
429 	r = radeon_wb_init(rdev);
430 	if (r)
431 		return r;
432 
433 	r = radeon_fence_driver_start_ring(rdev, RADEON_RING_TYPE_GFX_INDEX);
434 	if (r) {
435 		dev_err(rdev->dev, "failed initializing CP fences (%d).\n", r);
436 		return r;
437 	}
438 
439 	/* Enable IRQ */
440 	if (!rdev->irq.installed) {
441 		r = radeon_irq_kms_init(rdev);
442 		if (r)
443 			return r;
444 	}
445 
446 	r100_irq_set(rdev);
447 	rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL);
448 	/* 1M ring buffer */
449 	r = r100_cp_init(rdev, 1024 * 1024);
450 	if (r) {
451 		dev_err(rdev->dev, "failed initializing CP (%d).\n", r);
452 		return r;
453 	}
454 
455 	r = radeon_ib_pool_init(rdev);
456 	if (r) {
457 		dev_err(rdev->dev, "IB initialization failed (%d).\n", r);
458 		return r;
459 	}
460 
461 	return 0;
462 }
463 
464 int rs400_resume(struct radeon_device *rdev)
465 {
466 	int r;
467 
468 	/* Make sur GART are not working */
469 	rs400_gart_disable(rdev);
470 	/* Resume clock before doing reset */
471 	r300_clock_startup(rdev);
472 	/* setup MC before calling post tables */
473 	rs400_mc_program(rdev);
474 	/* Reset gpu before posting otherwise ATOM will enter infinite loop */
475 	if (radeon_asic_reset(rdev)) {
476 		dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
477 			RREG32(R_000E40_RBBM_STATUS),
478 			RREG32(R_0007C0_CP_STAT));
479 	}
480 	/* post */
481 	radeon_combios_asic_init(rdev->ddev);
482 	/* Resume clock after posting */
483 	r300_clock_startup(rdev);
484 	/* Initialize surface registers */
485 	radeon_surface_init(rdev);
486 
487 	rdev->accel_working = true;
488 	r = rs400_startup(rdev);
489 	if (r) {
490 		rdev->accel_working = false;
491 	}
492 	return r;
493 }
494 
495 int rs400_suspend(struct radeon_device *rdev)
496 {
497 	radeon_pm_suspend(rdev);
498 	r100_cp_disable(rdev);
499 	radeon_wb_disable(rdev);
500 	r100_irq_disable(rdev);
501 	rs400_gart_disable(rdev);
502 	return 0;
503 }
504 
505 void rs400_fini(struct radeon_device *rdev)
506 {
507 	radeon_pm_fini(rdev);
508 	r100_cp_fini(rdev);
509 	radeon_wb_fini(rdev);
510 	radeon_ib_pool_fini(rdev);
511 	radeon_gem_fini(rdev);
512 	rs400_gart_fini(rdev);
513 	radeon_irq_kms_fini(rdev);
514 	radeon_fence_driver_fini(rdev);
515 	radeon_bo_fini(rdev);
516 	radeon_atombios_fini(rdev);
517 	kfree(rdev->bios);
518 	rdev->bios = NULL;
519 }
520 
521 int rs400_init(struct radeon_device *rdev)
522 {
523 	int r;
524 
525 	/* Disable VGA */
526 	r100_vga_render_disable(rdev);
527 	/* Initialize scratch registers */
528 	radeon_scratch_init(rdev);
529 	/* Initialize surface registers */
530 	radeon_surface_init(rdev);
531 	/* TODO: disable VGA need to use VGA request */
532 	/* restore some register to sane defaults */
533 	r100_restore_sanity(rdev);
534 	/* BIOS*/
535 	if (!radeon_get_bios(rdev)) {
536 		if (ASIC_IS_AVIVO(rdev))
537 			return -EINVAL;
538 	}
539 	if (rdev->is_atom_bios) {
540 		dev_err(rdev->dev, "Expecting combios for RS400/RS480 GPU\n");
541 		return -EINVAL;
542 	} else {
543 		r = radeon_combios_init(rdev);
544 		if (r)
545 			return r;
546 	}
547 	/* Reset gpu before posting otherwise ATOM will enter infinite loop */
548 	if (radeon_asic_reset(rdev)) {
549 		dev_warn(rdev->dev,
550 			"GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
551 			RREG32(R_000E40_RBBM_STATUS),
552 			RREG32(R_0007C0_CP_STAT));
553 	}
554 	/* check if cards are posted or not */
555 	if (radeon_boot_test_post_card(rdev) == false)
556 		return -EINVAL;
557 
558 	/* Initialize clocks */
559 	radeon_get_clock_info(rdev->ddev);
560 	/* initialize memory controller */
561 	rs400_mc_init(rdev);
562 	/* Fence driver */
563 	r = radeon_fence_driver_init(rdev);
564 	if (r)
565 		return r;
566 	/* Memory manager */
567 	r = radeon_bo_init(rdev);
568 	if (r)
569 		return r;
570 	r = rs400_gart_init(rdev);
571 	if (r)
572 		return r;
573 	r300_set_reg_safe(rdev);
574 
575 	/* Initialize power management */
576 	radeon_pm_init(rdev);
577 
578 	rdev->accel_working = true;
579 	r = rs400_startup(rdev);
580 	if (r) {
581 		/* Somethings want wront with the accel init stop accel */
582 		dev_err(rdev->dev, "Disabling GPU acceleration\n");
583 		r100_cp_fini(rdev);
584 		radeon_wb_fini(rdev);
585 		radeon_ib_pool_fini(rdev);
586 		rs400_gart_fini(rdev);
587 		radeon_irq_kms_fini(rdev);
588 		rdev->accel_working = false;
589 	}
590 	return 0;
591 }
592