1 /*
2  * Copyright 2021 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_v3_0.h"
26 
27 #include "gc/gc_11_0_0_offset.h"
28 #include "gc/gc_11_0_0_sh_mask.h"
29 #include "gc/gc_11_0_0_default.h"
30 #include "navi10_enum.h"
31 #include "soc15_common.h"
32 
33 static const char *gfxhub_client_ids[] = {
34 	"CB/DB",
35 	"Reserved",
36 	"GE1",
37 	"GE2",
38 	"CPF",
39 	"CPC",
40 	"CPG",
41 	"RLC",
42 	"TCP",
43 	"SQC (inst)",
44 	"SQC (data)",
45 	"SQG",
46 	"Reserved",
47 	"SDMA0",
48 	"SDMA1",
49 	"GCR",
50 	"SDMA2",
51 	"SDMA3",
52 };
53 
54 static uint32_t gfxhub_v3_0_get_invalidate_req(unsigned int vmid,
55 					       uint32_t flush_type)
56 {
57 	u32 req = 0;
58 
59 	/* invalidate using legacy mode on vmid*/
60 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ,
61 			    PER_VMID_INVALIDATE_REQ, 1 << vmid);
62 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, FLUSH_TYPE, flush_type);
63 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PTES, 1);
64 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE0, 1);
65 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE1, 1);
66 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE2, 1);
67 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L1_PTES, 1);
68 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ,
69 			    CLEAR_PROTECTION_FAULT_STATUS_ADDR,	0);
70 
71 	return req;
72 }
73 
74 static void
75 gfxhub_v3_0_print_l2_protection_fault_status(struct amdgpu_device *adev,
76 					     uint32_t status)
77 {
78 	u32 cid = REG_GET_FIELD(status,
79 				GCVM_L2_PROTECTION_FAULT_STATUS, CID);
80 
81 	dev_err(adev->dev,
82 		"GCVM_L2_PROTECTION_FAULT_STATUS:0x%08X\n",
83 		status);
84 	dev_err(adev->dev, "\t Faulty UTCL2 client ID: %s (0x%x)\n",
85 		cid >= ARRAY_SIZE(gfxhub_client_ids) ? "unknown" : gfxhub_client_ids[cid],
86 		cid);
87 	dev_err(adev->dev, "\t MORE_FAULTS: 0x%lx\n",
88 		REG_GET_FIELD(status,
89 		GCVM_L2_PROTECTION_FAULT_STATUS, MORE_FAULTS));
90 	dev_err(adev->dev, "\t WALKER_ERROR: 0x%lx\n",
91 		REG_GET_FIELD(status,
92 		GCVM_L2_PROTECTION_FAULT_STATUS, WALKER_ERROR));
93 	dev_err(adev->dev, "\t PERMISSION_FAULTS: 0x%lx\n",
94 		REG_GET_FIELD(status,
95 		GCVM_L2_PROTECTION_FAULT_STATUS, PERMISSION_FAULTS));
96 	dev_err(adev->dev, "\t MAPPING_ERROR: 0x%lx\n",
97 		REG_GET_FIELD(status,
98 		GCVM_L2_PROTECTION_FAULT_STATUS, MAPPING_ERROR));
99 	dev_err(adev->dev, "\t RW: 0x%lx\n",
100 		REG_GET_FIELD(status,
101 		GCVM_L2_PROTECTION_FAULT_STATUS, RW));
102 }
103 
104 static u64 gfxhub_v3_0_get_fb_location(struct amdgpu_device *adev)
105 {
106 	u64 base = RREG32_SOC15(GC, 0, regGCMC_VM_FB_LOCATION_BASE);
107 
108 	base &= GCMC_VM_FB_LOCATION_BASE__FB_BASE_MASK;
109 	base <<= 24;
110 
111 	return base;
112 }
113 
114 static u64 gfxhub_v3_0_get_mc_fb_offset(struct amdgpu_device *adev)
115 {
116 	return (u64)RREG32_SOC15(GC, 0, regGCMC_VM_FB_OFFSET) << 24;
117 }
118 
119 static void gfxhub_v3_0_setup_vm_pt_regs(struct amdgpu_device *adev, uint32_t vmid,
120 				uint64_t page_table_base)
121 {
122 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
123 
124 	WREG32_SOC15_OFFSET(GC, 0, regGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32,
125 			    hub->ctx_addr_distance * vmid,
126 			    lower_32_bits(page_table_base));
127 
128 	WREG32_SOC15_OFFSET(GC, 0, regGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32,
129 			    hub->ctx_addr_distance * vmid,
130 			    upper_32_bits(page_table_base));
131 }
132 
133 static void gfxhub_v3_0_init_gart_aperture_regs(struct amdgpu_device *adev)
134 {
135 	uint64_t pt_base = amdgpu_gmc_pd_addr(adev->gart.bo);
136 
137 	gfxhub_v3_0_setup_vm_pt_regs(adev, 0, pt_base);
138 
139 	WREG32_SOC15(GC, 0, regGCVM_CONTEXT0_PAGE_TABLE_START_ADDR_LO32,
140 		     (u32)(adev->gmc.gart_start >> 12));
141 	WREG32_SOC15(GC, 0, regGCVM_CONTEXT0_PAGE_TABLE_START_ADDR_HI32,
142 		     (u32)(adev->gmc.gart_start >> 44));
143 
144 	WREG32_SOC15(GC, 0, regGCVM_CONTEXT0_PAGE_TABLE_END_ADDR_LO32,
145 		     (u32)(adev->gmc.gart_end >> 12));
146 	WREG32_SOC15(GC, 0, regGCVM_CONTEXT0_PAGE_TABLE_END_ADDR_HI32,
147 		     (u32)(adev->gmc.gart_end >> 44));
148 }
149 
150 static void gfxhub_v3_0_init_system_aperture_regs(struct amdgpu_device *adev)
151 {
152 	uint64_t value;
153 
154 	/* Program the AGP BAR */
155 	WREG32_SOC15(GC, 0, regGCMC_VM_AGP_BASE, 0);
156 	WREG32_SOC15(GC, 0, regGCMC_VM_AGP_BOT, adev->gmc.agp_start >> 24);
157 	WREG32_SOC15(GC, 0, regGCMC_VM_AGP_TOP, adev->gmc.agp_end >> 24);
158 
159 
160 	/* Program the system aperture low logical page number. */
161 	WREG32_SOC15(GC, 0, regGCMC_VM_SYSTEM_APERTURE_LOW_ADDR,
162 		     min(adev->gmc.fb_start, adev->gmc.agp_start) >> 18);
163 	WREG32_SOC15(GC, 0, regGCMC_VM_SYSTEM_APERTURE_HIGH_ADDR,
164 		     max(adev->gmc.fb_end, adev->gmc.agp_end) >> 18);
165 
166 	/* Set default page address. */
167 	value = adev->mem_scratch.gpu_addr - adev->gmc.vram_start
168 		+ adev->vm_manager.vram_base_offset;
169 	WREG32_SOC15(GC, 0, regGCMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_LSB,
170 		     (u32)(value >> 12));
171 	WREG32_SOC15(GC, 0, regGCMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_MSB,
172 		     (u32)(value >> 44));
173 
174 	/* Program "protection fault". */
175 	WREG32_SOC15(GC, 0, regGCVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_LO32,
176 		     (u32)(adev->dummy_page_addr >> 12));
177 	WREG32_SOC15(GC, 0, regGCVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_HI32,
178 		     (u32)((u64)adev->dummy_page_addr >> 44));
179 
180 	WREG32_FIELD15_PREREG(GC, 0, GCVM_L2_PROTECTION_FAULT_CNTL2,
181 		       ACTIVE_PAGE_MIGRATION_PTE_READ_RETRY, 1);
182 }
183 
184 
185 static void gfxhub_v3_0_init_tlb_regs(struct amdgpu_device *adev)
186 {
187 	uint32_t tmp;
188 
189 	/* Setup TLB control */
190 	tmp = RREG32_SOC15(GC, 0, regGCMC_VM_MX_L1_TLB_CNTL);
191 
192 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 1);
193 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL, SYSTEM_ACCESS_MODE, 3);
194 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
195 			    ENABLE_ADVANCED_DRIVER_MODEL, 1);
196 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
197 			    SYSTEM_APERTURE_UNMAPPED_ACCESS, 0);
198 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL, ECO_BITS, 0);
199 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
200 			    MTYPE, MTYPE_UC); /* UC, uncached */
201 
202 	WREG32_SOC15(GC, 0, regGCMC_VM_MX_L1_TLB_CNTL, tmp);
203 }
204 
205 static void gfxhub_v3_0_init_cache_regs(struct amdgpu_device *adev)
206 {
207 	uint32_t tmp;
208 
209 	/* These registers are not accessible to VF-SRIOV.
210 	 * The PF will program them instead.
211 	 */
212 	if (amdgpu_sriov_vf(adev))
213 		return;
214 
215 	/* Setup L2 cache */
216 	tmp = RREG32_SOC15(GC, 0, regGCVM_L2_CNTL);
217 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, ENABLE_L2_CACHE, 1);
218 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, ENABLE_L2_FRAGMENT_PROCESSING, 0);
219 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL,
220 			    ENABLE_DEFAULT_PAGE_OUT_TO_SYSTEM_MEMORY, 1);
221 	/* XXX for emulation, Refer to closed source code.*/
222 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL,
223 			    L2_PDE0_CACHE_TAG_GENERATION_MODE, 0);
224 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, PDE_FAULT_CLASSIFICATION, 0);
225 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, CONTEXT1_IDENTITY_ACCESS_MODE, 1);
226 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, IDENTITY_MODE_FRAGMENT_SIZE, 0);
227 	WREG32_SOC15(GC, 0, regGCVM_L2_CNTL, tmp);
228 
229 	tmp = RREG32_SOC15(GC, 0, regGCVM_L2_CNTL2);
230 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL2, INVALIDATE_ALL_L1_TLBS, 1);
231 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL2, INVALIDATE_L2_CACHE, 1);
232 	WREG32_SOC15(GC, 0, regGCVM_L2_CNTL2, tmp);
233 
234 	tmp = regGCVM_L2_CNTL3_DEFAULT;
235 	if (adev->gmc.translate_further) {
236 		tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3, BANK_SELECT, 12);
237 		tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3,
238 				    L2_CACHE_BIGK_FRAGMENT_SIZE, 9);
239 	} else {
240 		tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3, BANK_SELECT, 9);
241 		tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3,
242 				    L2_CACHE_BIGK_FRAGMENT_SIZE, 6);
243 	}
244 	WREG32_SOC15(GC, 0, regGCVM_L2_CNTL3, tmp);
245 
246 	tmp = regGCVM_L2_CNTL4_DEFAULT;
247 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL4, VMC_TAP_PDE_REQUEST_PHYSICAL, 0);
248 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL4, VMC_TAP_PTE_REQUEST_PHYSICAL, 0);
249 	WREG32_SOC15(GC, 0, regGCVM_L2_CNTL4, tmp);
250 
251 	tmp = regGCVM_L2_CNTL5_DEFAULT;
252 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL5, L2_CACHE_SMALLK_FRAGMENT_SIZE, 0);
253 	WREG32_SOC15(GC, 0, regGCVM_L2_CNTL5, tmp);
254 }
255 
256 static void gfxhub_v3_0_enable_system_domain(struct amdgpu_device *adev)
257 {
258 	uint32_t tmp;
259 
260 	tmp = RREG32_SOC15(GC, 0, regGCVM_CONTEXT0_CNTL);
261 	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT0_CNTL, ENABLE_CONTEXT, 1);
262 	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT0_CNTL, PAGE_TABLE_DEPTH, 0);
263 	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT0_CNTL,
264 			    RETRY_PERMISSION_OR_INVALID_PAGE_FAULT, 0);
265 	WREG32_SOC15(GC, 0, regGCVM_CONTEXT0_CNTL, tmp);
266 }
267 
268 static void gfxhub_v3_0_disable_identity_aperture(struct amdgpu_device *adev)
269 {
270 	/* These registers are not accessible to VF-SRIOV.
271 	 * The PF will program them instead.
272 	 */
273 	if (amdgpu_sriov_vf(adev))
274 		return;
275 
276 	WREG32_SOC15(GC, 0, regGCVM_L2_CONTEXT1_IDENTITY_APERTURE_LOW_ADDR_LO32,
277 		     0xFFFFFFFF);
278 	WREG32_SOC15(GC, 0, regGCVM_L2_CONTEXT1_IDENTITY_APERTURE_LOW_ADDR_HI32,
279 		     0x0000000F);
280 
281 	WREG32_SOC15(GC, 0, regGCVM_L2_CONTEXT1_IDENTITY_APERTURE_HIGH_ADDR_LO32,
282 		     0);
283 	WREG32_SOC15(GC, 0, regGCVM_L2_CONTEXT1_IDENTITY_APERTURE_HIGH_ADDR_HI32,
284 		     0);
285 
286 	WREG32_SOC15(GC, 0, regGCVM_L2_CONTEXT_IDENTITY_PHYSICAL_OFFSET_LO32, 0);
287 	WREG32_SOC15(GC, 0, regGCVM_L2_CONTEXT_IDENTITY_PHYSICAL_OFFSET_HI32, 0);
288 
289 }
290 
291 static void gfxhub_v3_0_setup_vmid_config(struct amdgpu_device *adev)
292 {
293 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
294 	int i;
295 	uint32_t tmp;
296 
297 	for (i = 0; i <= 14; i++) {
298 		tmp = RREG32_SOC15_OFFSET(GC, 0, regGCVM_CONTEXT1_CNTL, i);
299 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL, ENABLE_CONTEXT, 1);
300 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL, PAGE_TABLE_DEPTH,
301 				    adev->vm_manager.num_level);
302 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
303 				RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
304 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
305 				DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
306 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
307 				PDE0_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
308 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
309 				VALID_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
310 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
311 				READ_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
312 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
313 				WRITE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
314 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
315 				EXECUTE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
316 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
317 				PAGE_TABLE_BLOCK_SIZE,
318 				adev->vm_manager.block_size - 9);
319 		/* Send no-retry XNACK on fault to suppress VM fault storm. */
320 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
321 				    RETRY_PERMISSION_OR_INVALID_PAGE_FAULT,
322 				    !amdgpu_noretry);
323 		WREG32_SOC15_OFFSET(GC, 0, regGCVM_CONTEXT1_CNTL,
324 				    i * hub->ctx_distance, tmp);
325 		WREG32_SOC15_OFFSET(GC, 0, regGCVM_CONTEXT1_PAGE_TABLE_START_ADDR_LO32,
326 				    i * hub->ctx_addr_distance, 0);
327 		WREG32_SOC15_OFFSET(GC, 0, regGCVM_CONTEXT1_PAGE_TABLE_START_ADDR_HI32,
328 				    i * hub->ctx_addr_distance, 0);
329 		WREG32_SOC15_OFFSET(GC, 0, regGCVM_CONTEXT1_PAGE_TABLE_END_ADDR_LO32,
330 				    i * hub->ctx_addr_distance,
331 				    lower_32_bits(adev->vm_manager.max_pfn - 1));
332 		WREG32_SOC15_OFFSET(GC, 0, regGCVM_CONTEXT1_PAGE_TABLE_END_ADDR_HI32,
333 				    i * hub->ctx_addr_distance,
334 				    upper_32_bits(adev->vm_manager.max_pfn - 1));
335 	}
336 
337 	hub->vm_cntx_cntl = tmp;
338 }
339 
340 static void gfxhub_v3_0_program_invalidation(struct amdgpu_device *adev)
341 {
342 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
343 	unsigned i;
344 
345 	for (i = 0 ; i < 18; ++i) {
346 		WREG32_SOC15_OFFSET(GC, 0, regGCVM_INVALIDATE_ENG0_ADDR_RANGE_LO32,
347 				    i * hub->eng_addr_distance, 0xffffffff);
348 		WREG32_SOC15_OFFSET(GC, 0, regGCVM_INVALIDATE_ENG0_ADDR_RANGE_HI32,
349 				    i * hub->eng_addr_distance, 0x1f);
350 	}
351 }
352 
353 static int gfxhub_v3_0_gart_enable(struct amdgpu_device *adev)
354 {
355 	if (amdgpu_sriov_vf(adev)) {
356 		/*
357 		 * GCMC_VM_FB_LOCATION_BASE/TOP is NULL for VF, becuase they are
358 		 * VF copy registers so vbios post doesn't program them, for
359 		 * SRIOV driver need to program them
360 		 */
361 		WREG32_SOC15(GC, 0, regGCMC_VM_FB_LOCATION_BASE,
362 			     adev->gmc.vram_start >> 24);
363 		WREG32_SOC15(GC, 0, regGCMC_VM_FB_LOCATION_TOP,
364 			     adev->gmc.vram_end >> 24);
365 	}
366 
367 	/* GART Enable. */
368 	gfxhub_v3_0_init_gart_aperture_regs(adev);
369 	gfxhub_v3_0_init_system_aperture_regs(adev);
370 	gfxhub_v3_0_init_tlb_regs(adev);
371 	gfxhub_v3_0_init_cache_regs(adev);
372 
373 	gfxhub_v3_0_enable_system_domain(adev);
374 	gfxhub_v3_0_disable_identity_aperture(adev);
375 	gfxhub_v3_0_setup_vmid_config(adev);
376 	gfxhub_v3_0_program_invalidation(adev);
377 
378 	return 0;
379 }
380 
381 static void gfxhub_v3_0_gart_disable(struct amdgpu_device *adev)
382 {
383 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
384 	u32 tmp;
385 	u32 i;
386 
387 	/* Disable all tables */
388 	for (i = 0; i < 16; i++)
389 		WREG32_SOC15_OFFSET(GC, 0, regGCVM_CONTEXT0_CNTL,
390 				    i * hub->ctx_distance, 0);
391 
392 	/* Setup TLB control */
393 	tmp = RREG32_SOC15(GC, 0, regGCMC_VM_MX_L1_TLB_CNTL);
394 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 0);
395 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
396 			    ENABLE_ADVANCED_DRIVER_MODEL, 0);
397 	WREG32_SOC15(GC, 0, regGCMC_VM_MX_L1_TLB_CNTL, tmp);
398 
399 	/* Setup L2 cache */
400 	WREG32_FIELD15_PREREG(GC, 0, GCVM_L2_CNTL, ENABLE_L2_CACHE, 0);
401 	WREG32_SOC15(GC, 0, regGCVM_L2_CNTL3, 0);
402 }
403 
404 /**
405  * gfxhub_v3_0_set_fault_enable_default - update GART/VM fault handling
406  *
407  * @adev: amdgpu_device pointer
408  * @value: true redirects VM faults to the default page
409  */
410 static void gfxhub_v3_0_set_fault_enable_default(struct amdgpu_device *adev,
411 					  bool value)
412 {
413 	u32 tmp;
414 
415 	/* NO halt CP when page fault */
416 	tmp = RREG32_SOC15(GC, 0, regCP_DEBUG);
417 	tmp = REG_SET_FIELD(tmp, CP_DEBUG, CPG_UTCL1_ERROR_HALT_DISABLE, 1);
418 	WREG32_SOC15(GC, 0, regCP_DEBUG, tmp);
419 
420 	/* These registers are not accessible to VF-SRIOV.
421 	 * The PF will program them instead.
422 	 */
423 	if (amdgpu_sriov_vf(adev))
424 		return;
425 
426 	tmp = RREG32_SOC15(GC, 0, regGCVM_L2_PROTECTION_FAULT_CNTL);
427 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
428 			    RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
429 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
430 			    PDE0_PROTECTION_FAULT_ENABLE_DEFAULT, value);
431 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
432 			    PDE1_PROTECTION_FAULT_ENABLE_DEFAULT, value);
433 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
434 			    PDE2_PROTECTION_FAULT_ENABLE_DEFAULT, value);
435 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
436 			    TRANSLATE_FURTHER_PROTECTION_FAULT_ENABLE_DEFAULT,
437 			    value);
438 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
439 			    NACK_PROTECTION_FAULT_ENABLE_DEFAULT, value);
440 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
441 			    DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
442 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
443 			    VALID_PROTECTION_FAULT_ENABLE_DEFAULT, value);
444 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
445 			    READ_PROTECTION_FAULT_ENABLE_DEFAULT, value);
446 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
447 			    WRITE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
448 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
449 			    EXECUTE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
450 	if (!value) {
451 		tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
452 				CRASH_ON_NO_RETRY_FAULT, 1);
453 		tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
454 				CRASH_ON_RETRY_FAULT, 1);
455 	}
456 	WREG32_SOC15(GC, 0, regGCVM_L2_PROTECTION_FAULT_CNTL, tmp);
457 }
458 
459 static const struct amdgpu_vmhub_funcs gfxhub_v3_0_vmhub_funcs = {
460 	.print_l2_protection_fault_status = gfxhub_v3_0_print_l2_protection_fault_status,
461 	.get_invalidate_req = gfxhub_v3_0_get_invalidate_req,
462 };
463 
464 static void gfxhub_v3_0_init(struct amdgpu_device *adev)
465 {
466 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
467 
468 	hub->ctx0_ptb_addr_lo32 =
469 		SOC15_REG_OFFSET(GC, 0,
470 				 regGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32);
471 	hub->ctx0_ptb_addr_hi32 =
472 		SOC15_REG_OFFSET(GC, 0,
473 				 regGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32);
474 	hub->vm_inv_eng0_sem =
475 		SOC15_REG_OFFSET(GC, 0, regGCVM_INVALIDATE_ENG0_SEM);
476 	hub->vm_inv_eng0_req =
477 		SOC15_REG_OFFSET(GC, 0, regGCVM_INVALIDATE_ENG0_REQ);
478 	hub->vm_inv_eng0_ack =
479 		SOC15_REG_OFFSET(GC, 0, regGCVM_INVALIDATE_ENG0_ACK);
480 	hub->vm_context0_cntl =
481 		SOC15_REG_OFFSET(GC, 0, regGCVM_CONTEXT0_CNTL);
482 	hub->vm_l2_pro_fault_status =
483 		SOC15_REG_OFFSET(GC, 0, regGCVM_L2_PROTECTION_FAULT_STATUS);
484 	hub->vm_l2_pro_fault_cntl =
485 		SOC15_REG_OFFSET(GC, 0, regGCVM_L2_PROTECTION_FAULT_CNTL);
486 
487 	hub->ctx_distance = regGCVM_CONTEXT1_CNTL - regGCVM_CONTEXT0_CNTL;
488 	hub->ctx_addr_distance = regGCVM_CONTEXT1_PAGE_TABLE_BASE_ADDR_LO32 -
489 		regGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32;
490 	hub->eng_distance = regGCVM_INVALIDATE_ENG1_REQ -
491 		regGCVM_INVALIDATE_ENG0_REQ;
492 	hub->eng_addr_distance = regGCVM_INVALIDATE_ENG1_ADDR_RANGE_LO32 -
493 		regGCVM_INVALIDATE_ENG0_ADDR_RANGE_LO32;
494 
495 	hub->vm_cntx_cntl_vm_fault = GCVM_CONTEXT1_CNTL__RANGE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
496 		GCVM_CONTEXT1_CNTL__DUMMY_PAGE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
497 		GCVM_CONTEXT1_CNTL__PDE0_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
498 		GCVM_CONTEXT1_CNTL__VALID_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
499 		GCVM_CONTEXT1_CNTL__READ_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
500 		GCVM_CONTEXT1_CNTL__WRITE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
501 		GCVM_CONTEXT1_CNTL__EXECUTE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK;
502 
503 	hub->vmhub_funcs = &gfxhub_v3_0_vmhub_funcs;
504 }
505 
506 const struct amdgpu_gfxhub_funcs gfxhub_v3_0_funcs = {
507 	.get_fb_location = gfxhub_v3_0_get_fb_location,
508 	.get_mc_fb_offset = gfxhub_v3_0_get_mc_fb_offset,
509 	.setup_vm_pt_regs = gfxhub_v3_0_setup_vm_pt_regs,
510 	.gart_enable = gfxhub_v3_0_gart_enable,
511 	.gart_disable = gfxhub_v3_0_gart_disable,
512 	.set_fault_enable_default = gfxhub_v3_0_set_fault_enable_default,
513 	.init = gfxhub_v3_0_init,
514 };
515