1 /*
2  * Copyright 2019 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  */
23 
24 #include "amdgpu.h"
25 #include "gfxhub_v2_1.h"
26 
27 #include "gc/gc_10_3_0_offset.h"
28 #include "gc/gc_10_3_0_sh_mask.h"
29 #include "gc/gc_10_3_0_default.h"
30 #include "navi10_enum.h"
31 
32 #include "soc15_common.h"
33 
34 #define mmGCUTCL2_HARVEST_BYPASS_GROUPS_YELLOW_CARP				0x16f8
35 #define mmGCUTCL2_HARVEST_BYPASS_GROUPS_YELLOW_CARP_BASE_IDX	0
36 
37 static const char * const gfxhub_client_ids[] = {
38 	"CB/DB",
39 	"Reserved",
40 	"GE1",
41 	"GE2",
42 	"CPF",
43 	"CPC",
44 	"CPG",
45 	"RLC",
46 	"TCP",
47 	"SQC (inst)",
48 	"SQC (data)",
49 	"SQG",
50 	"Reserved",
51 	"SDMA0",
52 	"SDMA1",
53 	"GCR",
54 	"SDMA2",
55 	"SDMA3",
56 };
57 
gfxhub_v2_1_get_invalidate_req(unsigned int vmid,uint32_t flush_type)58 static uint32_t gfxhub_v2_1_get_invalidate_req(unsigned int vmid,
59 					       uint32_t flush_type)
60 {
61 	u32 req = 0;
62 
63 	/* invalidate using legacy mode on vmid*/
64 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ,
65 			    PER_VMID_INVALIDATE_REQ, 1 << vmid);
66 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, FLUSH_TYPE, flush_type);
67 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PTES, 1);
68 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE0, 1);
69 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE1, 1);
70 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE2, 1);
71 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L1_PTES, 1);
72 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ,
73 			    CLEAR_PROTECTION_FAULT_STATUS_ADDR,	0);
74 
75 	return req;
76 }
77 
78 static void
gfxhub_v2_1_print_l2_protection_fault_status(struct amdgpu_device * adev,uint32_t status)79 gfxhub_v2_1_print_l2_protection_fault_status(struct amdgpu_device *adev,
80 					     uint32_t status)
81 {
82 	u32 cid = REG_GET_FIELD(status,
83 				GCVM_L2_PROTECTION_FAULT_STATUS, CID);
84 
85 	dev_err(adev->dev,
86 		"GCVM_L2_PROTECTION_FAULT_STATUS:0x%08X\n",
87 		status);
88 	dev_err(adev->dev, "\t Faulty UTCL2 client ID: %s (0x%x)\n",
89 		cid >= ARRAY_SIZE(gfxhub_client_ids) ? "unknown" : gfxhub_client_ids[cid],
90 		cid);
91 	dev_err(adev->dev, "\t MORE_FAULTS: 0x%lx\n",
92 		REG_GET_FIELD(status,
93 		GCVM_L2_PROTECTION_FAULT_STATUS, MORE_FAULTS));
94 	dev_err(adev->dev, "\t WALKER_ERROR: 0x%lx\n",
95 		REG_GET_FIELD(status,
96 		GCVM_L2_PROTECTION_FAULT_STATUS, WALKER_ERROR));
97 	dev_err(adev->dev, "\t PERMISSION_FAULTS: 0x%lx\n",
98 		REG_GET_FIELD(status,
99 		GCVM_L2_PROTECTION_FAULT_STATUS, PERMISSION_FAULTS));
100 	dev_err(adev->dev, "\t MAPPING_ERROR: 0x%lx\n",
101 		REG_GET_FIELD(status,
102 		GCVM_L2_PROTECTION_FAULT_STATUS, MAPPING_ERROR));
103 	dev_err(adev->dev, "\t RW: 0x%lx\n",
104 		REG_GET_FIELD(status,
105 		GCVM_L2_PROTECTION_FAULT_STATUS, RW));
106 }
107 
gfxhub_v2_1_get_fb_location(struct amdgpu_device * adev)108 static u64 gfxhub_v2_1_get_fb_location(struct amdgpu_device *adev)
109 {
110 	u64 base = RREG32_SOC15(GC, 0, mmGCMC_VM_FB_LOCATION_BASE);
111 
112 	base &= GCMC_VM_FB_LOCATION_BASE__FB_BASE_MASK;
113 	base <<= 24;
114 
115 	return base;
116 }
117 
gfxhub_v2_1_get_mc_fb_offset(struct amdgpu_device * adev)118 static u64 gfxhub_v2_1_get_mc_fb_offset(struct amdgpu_device *adev)
119 {
120 	return (u64)RREG32_SOC15(GC, 0, mmGCMC_VM_FB_OFFSET) << 24;
121 }
122 
gfxhub_v2_1_setup_vm_pt_regs(struct amdgpu_device * adev,uint32_t vmid,uint64_t page_table_base)123 static void gfxhub_v2_1_setup_vm_pt_regs(struct amdgpu_device *adev, uint32_t vmid,
124 				uint64_t page_table_base)
125 {
126 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
127 
128 	WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32,
129 			    hub->ctx_addr_distance * vmid,
130 			    lower_32_bits(page_table_base));
131 
132 	WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32,
133 			    hub->ctx_addr_distance * vmid,
134 			    upper_32_bits(page_table_base));
135 }
136 
gfxhub_v2_1_init_gart_aperture_regs(struct amdgpu_device * adev)137 static void gfxhub_v2_1_init_gart_aperture_regs(struct amdgpu_device *adev)
138 {
139 	uint64_t pt_base = amdgpu_gmc_pd_addr(adev->gart.bo);
140 
141 	gfxhub_v2_1_setup_vm_pt_regs(adev, 0, pt_base);
142 
143 	WREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_START_ADDR_LO32,
144 		     (u32)(adev->gmc.gart_start >> 12));
145 	WREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_START_ADDR_HI32,
146 		     (u32)(adev->gmc.gart_start >> 44));
147 
148 	WREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_END_ADDR_LO32,
149 		     (u32)(adev->gmc.gart_end >> 12));
150 	WREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_END_ADDR_HI32,
151 		     (u32)(adev->gmc.gart_end >> 44));
152 }
153 
gfxhub_v2_1_init_system_aperture_regs(struct amdgpu_device * adev)154 static void gfxhub_v2_1_init_system_aperture_regs(struct amdgpu_device *adev)
155 {
156 	uint64_t value;
157 
158 	if (amdgpu_sriov_vf(adev))
159 		return;
160 
161 	/* Program the AGP BAR */
162 	WREG32_SOC15(GC, 0, mmGCMC_VM_AGP_BASE, 0);
163 	WREG32_SOC15(GC, 0, mmGCMC_VM_AGP_BOT, adev->gmc.agp_start >> 24);
164 	WREG32_SOC15(GC, 0, mmGCMC_VM_AGP_TOP, adev->gmc.agp_end >> 24);
165 
166 	/* Program the system aperture low logical page number. */
167 	WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_LOW_ADDR,
168 		     min(adev->gmc.fb_start, adev->gmc.agp_start) >> 18);
169 	WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_HIGH_ADDR,
170 		     max(adev->gmc.fb_end, adev->gmc.agp_end) >> 18);
171 
172 	/* Set default page address. */
173 	value = amdgpu_gmc_vram_mc2pa(adev, adev->mem_scratch.gpu_addr);
174 	WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_LSB,
175 		     (u32)(value >> 12));
176 	WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_MSB,
177 		     (u32)(value >> 44));
178 
179 	/* Program "protection fault". */
180 	WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_LO32,
181 		     (u32)(adev->dummy_page_addr >> 12));
182 	WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_HI32,
183 		     (u32)((u64)adev->dummy_page_addr >> 44));
184 
185 	WREG32_FIELD15(GC, 0, GCVM_L2_PROTECTION_FAULT_CNTL2,
186 		       ACTIVE_PAGE_MIGRATION_PTE_READ_RETRY, 1);
187 }
188 
189 
gfxhub_v2_1_init_tlb_regs(struct amdgpu_device * adev)190 static void gfxhub_v2_1_init_tlb_regs(struct amdgpu_device *adev)
191 {
192 	uint32_t tmp;
193 
194 	/* Setup TLB control */
195 	tmp = RREG32_SOC15(GC, 0, mmGCMC_VM_MX_L1_TLB_CNTL);
196 
197 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 1);
198 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL, SYSTEM_ACCESS_MODE, 3);
199 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
200 			    ENABLE_ADVANCED_DRIVER_MODEL, 1);
201 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
202 			    SYSTEM_APERTURE_UNMAPPED_ACCESS, 0);
203 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
204 			    MTYPE, MTYPE_UC); /* UC, uncached */
205 
206 	WREG32_SOC15(GC, 0, mmGCMC_VM_MX_L1_TLB_CNTL, tmp);
207 }
208 
gfxhub_v2_1_init_cache_regs(struct amdgpu_device * adev)209 static void gfxhub_v2_1_init_cache_regs(struct amdgpu_device *adev)
210 {
211 	uint32_t tmp;
212 
213 	/* These registers are not accessible to VF-SRIOV.
214 	 * The PF will program them instead.
215 	 */
216 	if (amdgpu_sriov_vf(adev))
217 		return;
218 
219 	/* Setup L2 cache */
220 	tmp = RREG32_SOC15(GC, 0, mmGCVM_L2_CNTL);
221 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, ENABLE_L2_CACHE, 1);
222 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, ENABLE_L2_FRAGMENT_PROCESSING, 0);
223 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL,
224 			    ENABLE_DEFAULT_PAGE_OUT_TO_SYSTEM_MEMORY, 1);
225 	/* XXX for emulation, Refer to closed source code.*/
226 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL,
227 			    L2_PDE0_CACHE_TAG_GENERATION_MODE, 0);
228 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, PDE_FAULT_CLASSIFICATION, 0);
229 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, CONTEXT1_IDENTITY_ACCESS_MODE, 1);
230 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, IDENTITY_MODE_FRAGMENT_SIZE, 0);
231 	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL, tmp);
232 
233 	tmp = RREG32_SOC15(GC, 0, mmGCVM_L2_CNTL2);
234 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL2, INVALIDATE_ALL_L1_TLBS, 1);
235 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL2, INVALIDATE_L2_CACHE, 1);
236 	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL2, tmp);
237 
238 	tmp = mmGCVM_L2_CNTL3_DEFAULT;
239 	if (adev->gmc.translate_further) {
240 		tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3, BANK_SELECT, 12);
241 		tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3,
242 				    L2_CACHE_BIGK_FRAGMENT_SIZE, 9);
243 	} else {
244 		tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3, BANK_SELECT, 9);
245 		tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3,
246 				    L2_CACHE_BIGK_FRAGMENT_SIZE, 6);
247 	}
248 	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL3, tmp);
249 
250 	tmp = mmGCVM_L2_CNTL4_DEFAULT;
251 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL4, VMC_TAP_PDE_REQUEST_PHYSICAL, 0);
252 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL4, VMC_TAP_PTE_REQUEST_PHYSICAL, 0);
253 	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL4, tmp);
254 
255 	tmp = mmGCVM_L2_CNTL5_DEFAULT;
256 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL5, L2_CACHE_SMALLK_FRAGMENT_SIZE, 0);
257 	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL5, tmp);
258 }
259 
gfxhub_v2_1_enable_system_domain(struct amdgpu_device * adev)260 static void gfxhub_v2_1_enable_system_domain(struct amdgpu_device *adev)
261 {
262 	uint32_t tmp;
263 
264 	tmp = RREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_CNTL);
265 	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT0_CNTL, ENABLE_CONTEXT, 1);
266 	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT0_CNTL, PAGE_TABLE_DEPTH, 0);
267 	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT0_CNTL,
268 			    RETRY_PERMISSION_OR_INVALID_PAGE_FAULT, 0);
269 	WREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_CNTL, tmp);
270 }
271 
gfxhub_v2_1_disable_identity_aperture(struct amdgpu_device * adev)272 static void gfxhub_v2_1_disable_identity_aperture(struct amdgpu_device *adev)
273 {
274 	/* These registers are not accessible to VF-SRIOV.
275 	 * The PF will program them instead.
276 	 */
277 	if (amdgpu_sriov_vf(adev))
278 		return;
279 
280 	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT1_IDENTITY_APERTURE_LOW_ADDR_LO32,
281 		     0xFFFFFFFF);
282 	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT1_IDENTITY_APERTURE_LOW_ADDR_HI32,
283 		     0x0000000F);
284 
285 	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT1_IDENTITY_APERTURE_HIGH_ADDR_LO32,
286 		     0);
287 	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT1_IDENTITY_APERTURE_HIGH_ADDR_HI32,
288 		     0);
289 
290 	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT_IDENTITY_PHYSICAL_OFFSET_LO32, 0);
291 	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT_IDENTITY_PHYSICAL_OFFSET_HI32, 0);
292 
293 }
294 
gfxhub_v2_1_setup_vmid_config(struct amdgpu_device * adev)295 static void gfxhub_v2_1_setup_vmid_config(struct amdgpu_device *adev)
296 {
297 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
298 	int i;
299 	uint32_t tmp;
300 
301 	for (i = 0; i <= 14; i++) {
302 		tmp = RREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_CNTL, i * hub->ctx_distance);
303 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL, ENABLE_CONTEXT, 1);
304 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL, PAGE_TABLE_DEPTH,
305 				    adev->vm_manager.num_level);
306 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
307 				RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
308 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
309 				DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
310 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
311 				PDE0_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
312 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
313 				VALID_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
314 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
315 				READ_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
316 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
317 				WRITE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
318 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
319 				EXECUTE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
320 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
321 				PAGE_TABLE_BLOCK_SIZE,
322 				adev->vm_manager.block_size - 9);
323 		/* Send no-retry XNACK on fault to suppress VM fault storm. */
324 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
325 				    RETRY_PERMISSION_OR_INVALID_PAGE_FAULT,
326 				    !adev->gmc.noretry);
327 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_CNTL,
328 				    i * hub->ctx_distance, tmp);
329 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_START_ADDR_LO32,
330 				    i * hub->ctx_addr_distance, 0);
331 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_START_ADDR_HI32,
332 				    i * hub->ctx_addr_distance, 0);
333 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_END_ADDR_LO32,
334 				    i * hub->ctx_addr_distance,
335 				    lower_32_bits(adev->vm_manager.max_pfn - 1));
336 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_END_ADDR_HI32,
337 				    i * hub->ctx_addr_distance,
338 				    upper_32_bits(adev->vm_manager.max_pfn - 1));
339 	}
340 
341 	hub->vm_cntx_cntl = tmp;
342 }
343 
gfxhub_v2_1_program_invalidation(struct amdgpu_device * adev)344 static void gfxhub_v2_1_program_invalidation(struct amdgpu_device *adev)
345 {
346 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
347 	unsigned int i;
348 
349 	for (i = 0 ; i < 18; ++i) {
350 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_ADDR_RANGE_LO32,
351 				    i * hub->eng_addr_distance, 0xffffffff);
352 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_ADDR_RANGE_HI32,
353 				    i * hub->eng_addr_distance, 0x1f);
354 	}
355 }
356 
gfxhub_v2_1_gart_enable(struct amdgpu_device * adev)357 static int gfxhub_v2_1_gart_enable(struct amdgpu_device *adev)
358 {
359 	if (amdgpu_sriov_vf(adev)) {
360 		/*
361 		 * GCMC_VM_FB_LOCATION_BASE/TOP is NULL for VF, becuase they are
362 		 * VF copy registers so vbios post doesn't program them, for
363 		 * SRIOV driver need to program them
364 		 */
365 		WREG32_SOC15(GC, 0, mmGCMC_VM_FB_LOCATION_BASE,
366 			     adev->gmc.vram_start >> 24);
367 		WREG32_SOC15(GC, 0, mmGCMC_VM_FB_LOCATION_TOP,
368 			     adev->gmc.vram_end >> 24);
369 	}
370 
371 	/* GART Enable. */
372 	gfxhub_v2_1_init_gart_aperture_regs(adev);
373 	gfxhub_v2_1_init_system_aperture_regs(adev);
374 	gfxhub_v2_1_init_tlb_regs(adev);
375 	gfxhub_v2_1_init_cache_regs(adev);
376 
377 	gfxhub_v2_1_enable_system_domain(adev);
378 	gfxhub_v2_1_disable_identity_aperture(adev);
379 	gfxhub_v2_1_setup_vmid_config(adev);
380 	gfxhub_v2_1_program_invalidation(adev);
381 
382 	return 0;
383 }
384 
gfxhub_v2_1_gart_disable(struct amdgpu_device * adev)385 static void gfxhub_v2_1_gart_disable(struct amdgpu_device *adev)
386 {
387 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
388 	u32 tmp;
389 	u32 i;
390 
391 	/* Disable all tables */
392 	for (i = 0; i < 16; i++)
393 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_CNTL,
394 				    i * hub->ctx_distance, 0);
395 
396 	/* Setup TLB control */
397 	tmp = RREG32_SOC15(GC, 0, mmGCMC_VM_MX_L1_TLB_CNTL);
398 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 0);
399 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
400 			    ENABLE_ADVANCED_DRIVER_MODEL, 0);
401 	WREG32_SOC15(GC, 0, mmGCMC_VM_MX_L1_TLB_CNTL, tmp);
402 
403 	if (amdgpu_sriov_vf(adev))
404 		return;
405 
406 	/* Setup L2 cache */
407 	WREG32_FIELD15(GC, 0, GCVM_L2_CNTL, ENABLE_L2_CACHE, 0);
408 	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL3, 0);
409 }
410 
411 /**
412  * gfxhub_v2_1_set_fault_enable_default - update GART/VM fault handling
413  *
414  * @adev: amdgpu_device pointer
415  * @value: true redirects VM faults to the default page
416  */
gfxhub_v2_1_set_fault_enable_default(struct amdgpu_device * adev,bool value)417 static void gfxhub_v2_1_set_fault_enable_default(struct amdgpu_device *adev,
418 					  bool value)
419 {
420 	u32 tmp;
421 
422 	/* These registers are not accessible to VF-SRIOV.
423 	 * The PF will program them instead.
424 	 */
425 	if (amdgpu_sriov_vf(adev))
426 		return;
427 
428 	tmp = RREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL);
429 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
430 			    RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
431 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
432 			    PDE0_PROTECTION_FAULT_ENABLE_DEFAULT, value);
433 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
434 			    PDE1_PROTECTION_FAULT_ENABLE_DEFAULT, value);
435 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
436 			    PDE2_PROTECTION_FAULT_ENABLE_DEFAULT, value);
437 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
438 			    TRANSLATE_FURTHER_PROTECTION_FAULT_ENABLE_DEFAULT,
439 			    value);
440 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
441 			    NACK_PROTECTION_FAULT_ENABLE_DEFAULT, value);
442 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
443 			    DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
444 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
445 			    VALID_PROTECTION_FAULT_ENABLE_DEFAULT, value);
446 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
447 			    READ_PROTECTION_FAULT_ENABLE_DEFAULT, value);
448 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
449 			    WRITE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
450 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
451 			    EXECUTE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
452 	if (!value) {
453 		tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
454 				CRASH_ON_NO_RETRY_FAULT, 1);
455 		tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
456 				CRASH_ON_RETRY_FAULT, 1);
457 	}
458 	WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL, tmp);
459 }
460 
461 static const struct amdgpu_vmhub_funcs gfxhub_v2_1_vmhub_funcs = {
462 	.print_l2_protection_fault_status = gfxhub_v2_1_print_l2_protection_fault_status,
463 	.get_invalidate_req = gfxhub_v2_1_get_invalidate_req,
464 };
465 
gfxhub_v2_1_init(struct amdgpu_device * adev)466 static void gfxhub_v2_1_init(struct amdgpu_device *adev)
467 {
468 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
469 
470 	hub->ctx0_ptb_addr_lo32 =
471 		SOC15_REG_OFFSET(GC, 0,
472 				 mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32);
473 	hub->ctx0_ptb_addr_hi32 =
474 		SOC15_REG_OFFSET(GC, 0,
475 				 mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32);
476 	hub->vm_inv_eng0_sem =
477 		SOC15_REG_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_SEM);
478 	hub->vm_inv_eng0_req =
479 		SOC15_REG_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_REQ);
480 	hub->vm_inv_eng0_ack =
481 		SOC15_REG_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_ACK);
482 	hub->vm_context0_cntl =
483 		SOC15_REG_OFFSET(GC, 0, mmGCVM_CONTEXT0_CNTL);
484 	hub->vm_l2_pro_fault_status =
485 		SOC15_REG_OFFSET(GC, 0, mmGCVM_L2_PROTECTION_FAULT_STATUS);
486 	hub->vm_l2_pro_fault_cntl =
487 		SOC15_REG_OFFSET(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL);
488 
489 	hub->ctx_distance = mmGCVM_CONTEXT1_CNTL - mmGCVM_CONTEXT0_CNTL;
490 	hub->ctx_addr_distance = mmGCVM_CONTEXT1_PAGE_TABLE_BASE_ADDR_LO32 -
491 		mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32;
492 	hub->eng_distance = mmGCVM_INVALIDATE_ENG1_REQ -
493 		mmGCVM_INVALIDATE_ENG0_REQ;
494 	hub->eng_addr_distance = mmGCVM_INVALIDATE_ENG1_ADDR_RANGE_LO32 -
495 		mmGCVM_INVALIDATE_ENG0_ADDR_RANGE_LO32;
496 
497 	hub->vm_cntx_cntl_vm_fault = GCVM_CONTEXT1_CNTL__RANGE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
498 		GCVM_CONTEXT1_CNTL__DUMMY_PAGE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
499 		GCVM_CONTEXT1_CNTL__PDE0_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
500 		GCVM_CONTEXT1_CNTL__VALID_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
501 		GCVM_CONTEXT1_CNTL__READ_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
502 		GCVM_CONTEXT1_CNTL__WRITE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
503 		GCVM_CONTEXT1_CNTL__EXECUTE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK;
504 
505 	hub->vmhub_funcs = &gfxhub_v2_1_vmhub_funcs;
506 }
507 
gfxhub_v2_1_get_xgmi_info(struct amdgpu_device * adev)508 static int gfxhub_v2_1_get_xgmi_info(struct amdgpu_device *adev)
509 {
510 	u32 xgmi_lfb_cntl = RREG32_SOC15(GC, 0, mmGCMC_VM_XGMI_LFB_CNTL);
511 	u32 max_region =
512 		REG_GET_FIELD(xgmi_lfb_cntl, GCMC_VM_XGMI_LFB_CNTL, PF_MAX_REGION);
513 	u32 max_num_physical_nodes   = 0;
514 	u32 max_physical_node_id     = 0;
515 
516 	switch (amdgpu_ip_version(adev, XGMI_HWIP, 0)) {
517 	case IP_VERSION(4, 8, 0):
518 		max_num_physical_nodes   = 4;
519 		max_physical_node_id     = 3;
520 		break;
521 	default:
522 		return -EINVAL;
523 	}
524 
525 	/* PF_MAX_REGION=0 means xgmi is disabled */
526 	if (max_region) {
527 		adev->gmc.xgmi.num_physical_nodes = max_region + 1;
528 		if (adev->gmc.xgmi.num_physical_nodes > max_num_physical_nodes)
529 			return -EINVAL;
530 
531 		adev->gmc.xgmi.physical_node_id =
532 			REG_GET_FIELD(xgmi_lfb_cntl, GCMC_VM_XGMI_LFB_CNTL, PF_LFB_REGION);
533 		if (adev->gmc.xgmi.physical_node_id > max_physical_node_id)
534 			return -EINVAL;
535 
536 		adev->gmc.xgmi.node_segment_size = REG_GET_FIELD(
537 			RREG32_SOC15(GC, 0, mmGCMC_VM_XGMI_LFB_SIZE),
538 			GCMC_VM_XGMI_LFB_SIZE, PF_LFB_SIZE) << 24;
539 	}
540 
541 	return 0;
542 }
543 
gfxhub_v2_1_utcl2_harvest(struct amdgpu_device * adev)544 static void gfxhub_v2_1_utcl2_harvest(struct amdgpu_device *adev)
545 {
546 	int i;
547 	u32 tmp = 0, disabled_sa = 0;
548 	u32 efuse_setting, vbios_setting;
549 
550 	u32 max_sa_mask = amdgpu_gfx_create_bitmask(
551 		adev->gfx.config.max_sh_per_se *
552 		adev->gfx.config.max_shader_engines);
553 
554 	switch (amdgpu_ip_version(adev, GC_HWIP, 0)) {
555 	case IP_VERSION(10, 3, 1):
556 	case IP_VERSION(10, 3, 3):
557 		/* Get SA disabled bitmap from eFuse setting */
558 		efuse_setting = RREG32_SOC15(GC, 0, mmCC_GC_SA_UNIT_DISABLE);
559 		efuse_setting &= CC_GC_SA_UNIT_DISABLE__SA_DISABLE_MASK;
560 		efuse_setting >>= CC_GC_SA_UNIT_DISABLE__SA_DISABLE__SHIFT;
561 
562 		/* Get SA disabled bitmap from VBIOS setting */
563 		vbios_setting = RREG32_SOC15(GC, 0, mmGC_USER_SA_UNIT_DISABLE);
564 		vbios_setting &= GC_USER_SA_UNIT_DISABLE__SA_DISABLE_MASK;
565 		vbios_setting >>= GC_USER_SA_UNIT_DISABLE__SA_DISABLE__SHIFT;
566 
567 		disabled_sa |= efuse_setting | vbios_setting;
568 		/* Make sure not to report harvested SAs beyond the max SA count */
569 		disabled_sa &= max_sa_mask;
570 
571 		for (i = 0; disabled_sa > 0; i++) {
572 			if (disabled_sa & 1)
573 				tmp |= 0x3 << (i * 2);
574 			disabled_sa >>= 1;
575 		}
576 		disabled_sa = tmp;
577 
578 		WREG32_SOC15(GC, 0, mmGCUTCL2_HARVEST_BYPASS_GROUPS_YELLOW_CARP, disabled_sa);
579 		break;
580 	default:
581 		break;
582 	}
583 }
584 
gfxhub_v2_1_save_regs(struct amdgpu_device * adev)585 static void gfxhub_v2_1_save_regs(struct amdgpu_device *adev)
586 {
587 	int i;
588 
589 	adev->gmc.VM_L2_CNTL = RREG32_SOC15(GC, 0, mmGCVM_L2_CNTL);
590 	adev->gmc.VM_L2_CNTL2 = RREG32_SOC15(GC, 0, mmGCVM_L2_CNTL2);
591 	adev->gmc.VM_DUMMY_PAGE_FAULT_CNTL = RREG32_SOC15(GC, 0, mmGCVM_DUMMY_PAGE_FAULT_CNTL);
592 	adev->gmc.VM_DUMMY_PAGE_FAULT_ADDR_LO32 = RREG32_SOC15(GC, 0, mmGCVM_DUMMY_PAGE_FAULT_ADDR_LO32);
593 	adev->gmc.VM_DUMMY_PAGE_FAULT_ADDR_HI32 = RREG32_SOC15(GC, 0, mmGCVM_DUMMY_PAGE_FAULT_ADDR_HI32);
594 	adev->gmc.VM_L2_PROTECTION_FAULT_CNTL = RREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL);
595 	adev->gmc.VM_L2_PROTECTION_FAULT_CNTL2 = RREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL2);
596 	adev->gmc.VM_L2_PROTECTION_FAULT_MM_CNTL3 = RREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_MM_CNTL3);
597 	adev->gmc.VM_L2_PROTECTION_FAULT_MM_CNTL4 = RREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_MM_CNTL4);
598 	adev->gmc.VM_L2_PROTECTION_FAULT_ADDR_LO32 = RREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_ADDR_LO32);
599 	adev->gmc.VM_L2_PROTECTION_FAULT_ADDR_HI32 = RREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_ADDR_HI32);
600 	adev->gmc.VM_DEBUG = RREG32_SOC15(GC, 0, mmGCVM_DEBUG);
601 	adev->gmc.VM_L2_MM_GROUP_RT_CLASSES = RREG32_SOC15(GC, 0, mmGCVM_L2_MM_GROUP_RT_CLASSES);
602 	adev->gmc.VM_L2_BANK_SELECT_RESERVED_CID = RREG32_SOC15(GC, 0, mmGCVM_L2_BANK_SELECT_RESERVED_CID);
603 	adev->gmc.VM_L2_BANK_SELECT_RESERVED_CID2 = RREG32_SOC15(GC, 0, mmGCVM_L2_BANK_SELECT_RESERVED_CID2);
604 	adev->gmc.VM_L2_CACHE_PARITY_CNTL = RREG32_SOC15(GC, 0, mmGCVM_L2_CACHE_PARITY_CNTL);
605 	adev->gmc.VM_L2_IH_LOG_CNTL = RREG32_SOC15(GC, 0, mmGCVM_L2_IH_LOG_CNTL);
606 
607 	for (i = 0; i <= 15; i++) {
608 		adev->gmc.VM_CONTEXT_CNTL[i] = RREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_CNTL, i);
609 		adev->gmc.VM_CONTEXT_PAGE_TABLE_BASE_ADDR_LO32[i] = RREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32, i * 2);
610 		adev->gmc.VM_CONTEXT_PAGE_TABLE_BASE_ADDR_HI32[i] = RREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32, i * 2);
611 		adev->gmc.VM_CONTEXT_PAGE_TABLE_START_ADDR_LO32[i] = RREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_START_ADDR_LO32, i * 2);
612 		adev->gmc.VM_CONTEXT_PAGE_TABLE_START_ADDR_HI32[i] = RREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_START_ADDR_HI32, i * 2);
613 		adev->gmc.VM_CONTEXT_PAGE_TABLE_END_ADDR_LO32[i] = RREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_END_ADDR_LO32, i * 2);
614 		adev->gmc.VM_CONTEXT_PAGE_TABLE_END_ADDR_HI32[i] = RREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_END_ADDR_HI32, i * 2);
615 	}
616 
617 	adev->gmc.MC_VM_MX_L1_TLB_CNTL = RREG32_SOC15(GC, 0, mmGCMC_VM_MX_L1_TLB_CNTL);
618 }
619 
gfxhub_v2_1_restore_regs(struct amdgpu_device * adev)620 static void gfxhub_v2_1_restore_regs(struct amdgpu_device *adev)
621 {
622 	int i;
623 
624 	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL, adev->gmc.VM_L2_CNTL);
625 	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL2, adev->gmc.VM_L2_CNTL2);
626 	WREG32_SOC15(GC, 0, mmGCVM_DUMMY_PAGE_FAULT_CNTL, adev->gmc.VM_DUMMY_PAGE_FAULT_CNTL);
627 	WREG32_SOC15(GC, 0, mmGCVM_DUMMY_PAGE_FAULT_ADDR_LO32, adev->gmc.VM_DUMMY_PAGE_FAULT_ADDR_LO32);
628 	WREG32_SOC15(GC, 0, mmGCVM_DUMMY_PAGE_FAULT_ADDR_HI32, adev->gmc.VM_DUMMY_PAGE_FAULT_ADDR_HI32);
629 	WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL, adev->gmc.VM_L2_PROTECTION_FAULT_CNTL);
630 	WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL2, adev->gmc.VM_L2_PROTECTION_FAULT_CNTL2);
631 	WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_MM_CNTL3, adev->gmc.VM_L2_PROTECTION_FAULT_MM_CNTL3);
632 	WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_MM_CNTL4, adev->gmc.VM_L2_PROTECTION_FAULT_MM_CNTL4);
633 	WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_ADDR_LO32, adev->gmc.VM_L2_PROTECTION_FAULT_ADDR_LO32);
634 	WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_ADDR_HI32, adev->gmc.VM_L2_PROTECTION_FAULT_ADDR_HI32);
635 	WREG32_SOC15(GC, 0, mmGCVM_DEBUG, adev->gmc.VM_DEBUG);
636 	WREG32_SOC15(GC, 0, mmGCVM_L2_MM_GROUP_RT_CLASSES, adev->gmc.VM_L2_MM_GROUP_RT_CLASSES);
637 	WREG32_SOC15(GC, 0, mmGCVM_L2_BANK_SELECT_RESERVED_CID, adev->gmc.VM_L2_BANK_SELECT_RESERVED_CID);
638 	WREG32_SOC15(GC, 0, mmGCVM_L2_BANK_SELECT_RESERVED_CID2, adev->gmc.VM_L2_BANK_SELECT_RESERVED_CID2);
639 	WREG32_SOC15(GC, 0, mmGCVM_L2_CACHE_PARITY_CNTL, adev->gmc.VM_L2_CACHE_PARITY_CNTL);
640 	WREG32_SOC15(GC, 0, mmGCVM_L2_IH_LOG_CNTL, adev->gmc.VM_L2_IH_LOG_CNTL);
641 
642 	for (i = 0; i <= 15; i++) {
643 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_CNTL, i, adev->gmc.VM_CONTEXT_CNTL[i]);
644 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32, i * 2, adev->gmc.VM_CONTEXT_PAGE_TABLE_BASE_ADDR_LO32[i]);
645 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32, i * 2, adev->gmc.VM_CONTEXT_PAGE_TABLE_BASE_ADDR_HI32[i]);
646 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_START_ADDR_LO32, i * 2, adev->gmc.VM_CONTEXT_PAGE_TABLE_START_ADDR_LO32[i]);
647 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_START_ADDR_HI32, i * 2, adev->gmc.VM_CONTEXT_PAGE_TABLE_START_ADDR_HI32[i]);
648 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_END_ADDR_LO32, i * 2, adev->gmc.VM_CONTEXT_PAGE_TABLE_END_ADDR_LO32[i]);
649 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_END_ADDR_HI32, i * 2, adev->gmc.VM_CONTEXT_PAGE_TABLE_END_ADDR_HI32[i]);
650 	}
651 
652 	WREG32_SOC15(GC, 0, mmGCMC_VM_FB_LOCATION_BASE, adev->gmc.vram_start >> 24);
653 	WREG32_SOC15(GC, 0, mmGCMC_VM_FB_LOCATION_TOP, adev->gmc.vram_end >> 24);
654 	WREG32_SOC15(GC, 0, mmGCMC_VM_MX_L1_TLB_CNTL, adev->gmc.MC_VM_MX_L1_TLB_CNTL);
655 }
656 
gfxhub_v2_1_halt(struct amdgpu_device * adev)657 static void gfxhub_v2_1_halt(struct amdgpu_device *adev)
658 {
659 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
660 	int i;
661 	uint32_t tmp;
662 	int time = 1000;
663 
664 	gfxhub_v2_1_set_fault_enable_default(adev, false);
665 
666 	for (i = 0; i <= 14; i++) {
667 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_START_ADDR_LO32,
668 				    i * hub->ctx_addr_distance, ~0);
669 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_START_ADDR_HI32,
670 				    i * hub->ctx_addr_distance, ~0);
671 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_END_ADDR_LO32,
672 				    i * hub->ctx_addr_distance,
673 				    0);
674 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_END_ADDR_HI32,
675 				    i * hub->ctx_addr_distance,
676 				    0);
677 	}
678 	tmp = RREG32_SOC15(GC, 0, mmGRBM_STATUS2);
679 	while ((tmp & (GRBM_STATUS2__EA_BUSY_MASK |
680 		      GRBM_STATUS2__EA_LINK_BUSY_MASK)) != 0 &&
681 	       time) {
682 		udelay(100);
683 		time--;
684 		tmp = RREG32_SOC15(GC, 0, mmGRBM_STATUS2);
685 	}
686 
687 	if (!time)
688 		DRM_WARN("failed to wait for GRBM(EA) idle\n");
689 }
690 
691 const struct amdgpu_gfxhub_funcs gfxhub_v2_1_funcs = {
692 	.get_fb_location = gfxhub_v2_1_get_fb_location,
693 	.get_mc_fb_offset = gfxhub_v2_1_get_mc_fb_offset,
694 	.setup_vm_pt_regs = gfxhub_v2_1_setup_vm_pt_regs,
695 	.gart_enable = gfxhub_v2_1_gart_enable,
696 	.gart_disable = gfxhub_v2_1_gart_disable,
697 	.set_fault_enable_default = gfxhub_v2_1_set_fault_enable_default,
698 	.init = gfxhub_v2_1_init,
699 	.get_xgmi_info = gfxhub_v2_1_get_xgmi_info,
700 	.utcl2_harvest = gfxhub_v2_1_utcl2_harvest,
701 	.mode2_save_regs = gfxhub_v2_1_save_regs,
702 	.mode2_restore_regs = gfxhub_v2_1_restore_regs,
703 	.halt = gfxhub_v2_1_halt,
704 };
705