tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright 2016 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#include "amdgpu.h"
24#include "gfxhub_v1_0.h"
25
26#include "gc/gc_9_0_offset.h"
27#include "gc/gc_9_0_sh_mask.h"
28#include "gc/gc_9_0_default.h"
29#include "vega10_enum.h"
30
31#include "soc15_common.h"
32
33u64 gfxhub_v1_0_get_mc_fb_offset(struct amdgpu_device *adev)
34{
35 return (u64)RREG32_SOC15(GC, 0, mmMC_VM_FB_OFFSET) << 24;
36}
37
38void gfxhub_v1_0_setup_vm_pt_regs(struct amdgpu_device *adev, uint32_t vmid,
39 uint64_t page_table_base)
40{
41 /* two registers distance between mmVM_CONTEXT0_* to mmVM_CONTEXT1_* */
42 int offset = mmVM_CONTEXT1_PAGE_TABLE_BASE_ADDR_LO32
43 - mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32;
44
45 WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32,
46 offset * vmid, lower_32_bits(page_table_base));
47
48 WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32,
49 offset * vmid, upper_32_bits(page_table_base));
50}
51
52static void gfxhub_v1_0_init_gart_aperture_regs(struct amdgpu_device *adev)
53{
54 uint64_t pt_base = amdgpu_gmc_pd_addr(adev->gart.bo);
55
56 gfxhub_v1_0_setup_vm_pt_regs(adev, 0, pt_base);
57
58 WREG32_SOC15(GC, 0, mmVM_CONTEXT0_PAGE_TABLE_START_ADDR_LO32,
59 (u32)(adev->gmc.gart_start >> 12));
60 WREG32_SOC15(GC, 0, mmVM_CONTEXT0_PAGE_TABLE_START_ADDR_HI32,
61 (u32)(adev->gmc.gart_start >> 44));
62
63 WREG32_SOC15(GC, 0, mmVM_CONTEXT0_PAGE_TABLE_END_ADDR_LO32,
64 (u32)(adev->gmc.gart_end >> 12));
65 WREG32_SOC15(GC, 0, mmVM_CONTEXT0_PAGE_TABLE_END_ADDR_HI32,
66 (u32)(adev->gmc.gart_end >> 44));
67}
68
69static void gfxhub_v1_0_init_system_aperture_regs(struct amdgpu_device *adev)
70{
71 uint64_t value;
72
73 /* Program the AGP BAR */
74 WREG32_SOC15_RLC(GC, 0, mmMC_VM_AGP_BASE, 0);
75 WREG32_SOC15_RLC(GC, 0, mmMC_VM_AGP_BOT, adev->gmc.agp_start >> 24);
76 WREG32_SOC15_RLC(GC, 0, mmMC_VM_AGP_TOP, adev->gmc.agp_end >> 24);
77
78 /* Program the system aperture low logical page number. */
79 WREG32_SOC15_RLC(GC, 0, mmMC_VM_SYSTEM_APERTURE_LOW_ADDR,
80 min(adev->gmc.fb_start, adev->gmc.agp_start) >> 18);
81
82 if (adev->asic_type == CHIP_RAVEN && adev->rev_id >= 0x8)
83 /*
84 * Raven2 has a HW issue that it is unable to use the vram which
85 * is out of MC_VM_SYSTEM_APERTURE_HIGH_ADDR. So here is the
86 * workaround that increase system aperture high address (add 1)
87 * to get rid of the VM fault and hardware hang.
88 */
89 WREG32_SOC15_RLC(GC, 0, mmMC_VM_SYSTEM_APERTURE_HIGH_ADDR,
90 max((adev->gmc.fb_end >> 18) + 0x1,
91 adev->gmc.agp_end >> 18));
92 else
93 WREG32_SOC15_RLC(GC, 0, mmMC_VM_SYSTEM_APERTURE_HIGH_ADDR,
94 max(adev->gmc.fb_end, adev->gmc.agp_end) >> 18);
95
96 /* Set default page address. */
97 value = adev->vram_scratch.gpu_addr - adev->gmc.vram_start
98 + adev->vm_manager.vram_base_offset;
99 WREG32_SOC15(GC, 0, mmMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_LSB,
100 (u32)(value >> 12));
101 WREG32_SOC15(GC, 0, mmMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_MSB,
102 (u32)(value >> 44));
103
104 /* Program "protection fault". */
105 WREG32_SOC15(GC, 0, mmVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_LO32,
106 (u32)(adev->dummy_page_addr >> 12));
107 WREG32_SOC15(GC, 0, mmVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_HI32,
108 (u32)((u64)adev->dummy_page_addr >> 44));
109
110 WREG32_FIELD15(GC, 0, VM_L2_PROTECTION_FAULT_CNTL2,
111 ACTIVE_PAGE_MIGRATION_PTE_READ_RETRY, 1);
112}
113
114static void gfxhub_v1_0_init_tlb_regs(struct amdgpu_device *adev)
115{
116 uint32_t tmp;
117
118 /* Setup TLB control */
119 tmp = RREG32_SOC15(GC, 0, mmMC_VM_MX_L1_TLB_CNTL);
120
121 tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 1);
122 tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL, SYSTEM_ACCESS_MODE, 3);
123 tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL,
124 ENABLE_ADVANCED_DRIVER_MODEL, 1);
125 tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL,
126 SYSTEM_APERTURE_UNMAPPED_ACCESS, 0);
127 tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL, ECO_BITS, 0);
128 tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL,
129 MTYPE, MTYPE_UC);/* XXX for emulation. */
130 tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL, ATC_EN, 1);
131
132 WREG32_SOC15_RLC(GC, 0, mmMC_VM_MX_L1_TLB_CNTL, tmp);
133}
134
135static void gfxhub_v1_0_init_cache_regs(struct amdgpu_device *adev)
136{
137 uint32_t tmp;
138
139 /* Setup L2 cache */
140 tmp = RREG32_SOC15(GC, 0, mmVM_L2_CNTL);
141 tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, ENABLE_L2_CACHE, 1);
142 tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, ENABLE_L2_FRAGMENT_PROCESSING, 1);
143 /* XXX for emulation, Refer to closed source code.*/
144 tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, L2_PDE0_CACHE_TAG_GENERATION_MODE,
145 0);
146 tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, PDE_FAULT_CLASSIFICATION, 0);
147 tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, CONTEXT1_IDENTITY_ACCESS_MODE, 1);
148 tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, IDENTITY_MODE_FRAGMENT_SIZE, 0);
149 WREG32_SOC15_RLC(GC, 0, mmVM_L2_CNTL, tmp);
150
151 tmp = RREG32_SOC15(GC, 0, mmVM_L2_CNTL2);
152 tmp = REG_SET_FIELD(tmp, VM_L2_CNTL2, INVALIDATE_ALL_L1_TLBS, 1);
153 tmp = REG_SET_FIELD(tmp, VM_L2_CNTL2, INVALIDATE_L2_CACHE, 1);
154 WREG32_SOC15_RLC(GC, 0, mmVM_L2_CNTL2, tmp);
155
156 tmp = mmVM_L2_CNTL3_DEFAULT;
157 if (adev->gmc.translate_further) {
158 tmp = REG_SET_FIELD(tmp, VM_L2_CNTL3, BANK_SELECT, 12);
159 tmp = REG_SET_FIELD(tmp, VM_L2_CNTL3,
160 L2_CACHE_BIGK_FRAGMENT_SIZE, 9);
161 } else {
162 tmp = REG_SET_FIELD(tmp, VM_L2_CNTL3, BANK_SELECT, 9);
163 tmp = REG_SET_FIELD(tmp, VM_L2_CNTL3,
164 L2_CACHE_BIGK_FRAGMENT_SIZE, 6);
165 }
166 WREG32_SOC15_RLC(GC, 0, mmVM_L2_CNTL3, tmp);
167
168 tmp = mmVM_L2_CNTL4_DEFAULT;
169 tmp = REG_SET_FIELD(tmp, VM_L2_CNTL4, VMC_TAP_PDE_REQUEST_PHYSICAL, 0);
170 tmp = REG_SET_FIELD(tmp, VM_L2_CNTL4, VMC_TAP_PTE_REQUEST_PHYSICAL, 0);
171 WREG32_SOC15_RLC(GC, 0, mmVM_L2_CNTL4, tmp);
172}
173
174static void gfxhub_v1_0_enable_system_domain(struct amdgpu_device *adev)
175{
176 uint32_t tmp;
177
178 tmp = RREG32_SOC15(GC, 0, mmVM_CONTEXT0_CNTL);
179 tmp = REG_SET_FIELD(tmp, VM_CONTEXT0_CNTL, ENABLE_CONTEXT, 1);
180 tmp = REG_SET_FIELD(tmp, VM_CONTEXT0_CNTL, PAGE_TABLE_DEPTH, 0);
181 tmp = REG_SET_FIELD(tmp, VM_CONTEXT0_CNTL,
182 RETRY_PERMISSION_OR_INVALID_PAGE_FAULT, 0);
183 WREG32_SOC15(GC, 0, mmVM_CONTEXT0_CNTL, tmp);
184}
185
186static void gfxhub_v1_0_disable_identity_aperture(struct amdgpu_device *adev)
187{
188 WREG32_SOC15(GC, 0, mmVM_L2_CONTEXT1_IDENTITY_APERTURE_LOW_ADDR_LO32,
189 0XFFFFFFFF);
190 WREG32_SOC15(GC, 0, mmVM_L2_CONTEXT1_IDENTITY_APERTURE_LOW_ADDR_HI32,
191 0x0000000F);
192
193 WREG32_SOC15(GC, 0, mmVM_L2_CONTEXT1_IDENTITY_APERTURE_HIGH_ADDR_LO32,
194 0);
195 WREG32_SOC15(GC, 0, mmVM_L2_CONTEXT1_IDENTITY_APERTURE_HIGH_ADDR_HI32,
196 0);
197
198 WREG32_SOC15(GC, 0, mmVM_L2_CONTEXT_IDENTITY_PHYSICAL_OFFSET_LO32, 0);
199 WREG32_SOC15(GC, 0, mmVM_L2_CONTEXT_IDENTITY_PHYSICAL_OFFSET_HI32, 0);
200
201}
202
203static void gfxhub_v1_0_setup_vmid_config(struct amdgpu_device *adev)
204{
205 unsigned num_level, block_size;
206 uint32_t tmp;
207 int i;
208
209 num_level = adev->vm_manager.num_level;
210 block_size = adev->vm_manager.block_size;
211 if (adev->gmc.translate_further)
212 num_level -= 1;
213 else
214 block_size -= 9;
215
216 for (i = 0; i <= 14; i++) {
217 tmp = RREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_CNTL, i);
218 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL, ENABLE_CONTEXT, 1);
219 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL, PAGE_TABLE_DEPTH,
220 num_level);
221 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
222 RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
223 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
224 DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT,
225 1);
226 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
227 PDE0_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
228 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
229 VALID_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
230 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
231 READ_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
232 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
233 WRITE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
234 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
235 EXECUTE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
236 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
237 PAGE_TABLE_BLOCK_SIZE,
238 block_size);
239 /* Send no-retry XNACK on fault to suppress VM fault storm. */
240 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
241 RETRY_PERMISSION_OR_INVALID_PAGE_FAULT,
242 !amdgpu_noretry);
243 WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_CNTL, i, tmp);
244 WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_START_ADDR_LO32, i*2, 0);
245 WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_START_ADDR_HI32, i*2, 0);
246 WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_END_ADDR_LO32, i*2,
247 lower_32_bits(adev->vm_manager.max_pfn - 1));
248 WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_END_ADDR_HI32, i*2,
249 upper_32_bits(adev->vm_manager.max_pfn - 1));
250 }
251}
252
253static void gfxhub_v1_0_program_invalidation(struct amdgpu_device *adev)
254{
255 unsigned i;
256
257 for (i = 0 ; i < 18; ++i) {
258 WREG32_SOC15_OFFSET(GC, 0, mmVM_INVALIDATE_ENG0_ADDR_RANGE_LO32,
259 2 * i, 0xffffffff);
260 WREG32_SOC15_OFFSET(GC, 0, mmVM_INVALIDATE_ENG0_ADDR_RANGE_HI32,
261 2 * i, 0x1f);
262 }
263}
264
265int gfxhub_v1_0_gart_enable(struct amdgpu_device *adev)
266{
267 if (amdgpu_sriov_vf(adev)) {
268 /*
269 * MC_VM_FB_LOCATION_BASE/TOP is NULL for VF, becuase they are
270 * VF copy registers so vbios post doesn't program them, for
271 * SRIOV driver need to program them
272 */
273 WREG32_SOC15_RLC(GC, 0, mmMC_VM_FB_LOCATION_BASE,
274 adev->gmc.vram_start >> 24);
275 WREG32_SOC15_RLC(GC, 0, mmMC_VM_FB_LOCATION_TOP,
276 adev->gmc.vram_end >> 24);
277 }
278
279 /* GART Enable. */
280 gfxhub_v1_0_init_gart_aperture_regs(adev);
281 gfxhub_v1_0_init_system_aperture_regs(adev);
282 gfxhub_v1_0_init_tlb_regs(adev);
283 gfxhub_v1_0_init_cache_regs(adev);
284
285 gfxhub_v1_0_enable_system_domain(adev);
286 gfxhub_v1_0_disable_identity_aperture(adev);
287 gfxhub_v1_0_setup_vmid_config(adev);
288 gfxhub_v1_0_program_invalidation(adev);
289
290 return 0;
291}
292
293void gfxhub_v1_0_gart_disable(struct amdgpu_device *adev)
294{
295 u32 tmp;
296 u32 i;
297
298 /* Disable all tables */
299 for (i = 0; i < 16; i++)
300 WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT0_CNTL, i, 0);
301
302 /* Setup TLB control */
303 tmp = RREG32_SOC15(GC, 0, mmMC_VM_MX_L1_TLB_CNTL);
304 tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 0);
305 tmp = REG_SET_FIELD(tmp,
306 MC_VM_MX_L1_TLB_CNTL,
307 ENABLE_ADVANCED_DRIVER_MODEL,
308 0);
309 WREG32_SOC15_RLC(GC, 0, mmMC_VM_MX_L1_TLB_CNTL, tmp);
310
311 /* Setup L2 cache */
312 WREG32_FIELD15(GC, 0, VM_L2_CNTL, ENABLE_L2_CACHE, 0);
313 WREG32_SOC15(GC, 0, mmVM_L2_CNTL3, 0);
314}
315
316/**
317 * gfxhub_v1_0_set_fault_enable_default - update GART/VM fault handling
318 *
319 * @adev: amdgpu_device pointer
320 * @value: true redirects VM faults to the default page
321 */
322void gfxhub_v1_0_set_fault_enable_default(struct amdgpu_device *adev,
323 bool value)
324{
325 u32 tmp;
326 tmp = RREG32_SOC15(GC, 0, mmVM_L2_PROTECTION_FAULT_CNTL);
327 tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
328 RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
329 tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
330 PDE0_PROTECTION_FAULT_ENABLE_DEFAULT, value);
331 tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
332 PDE1_PROTECTION_FAULT_ENABLE_DEFAULT, value);
333 tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
334 PDE2_PROTECTION_FAULT_ENABLE_DEFAULT, value);
335 tmp = REG_SET_FIELD(tmp,
336 VM_L2_PROTECTION_FAULT_CNTL,
337 TRANSLATE_FURTHER_PROTECTION_FAULT_ENABLE_DEFAULT,
338 value);
339 tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
340 NACK_PROTECTION_FAULT_ENABLE_DEFAULT, value);
341 tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
342 DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
343 tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
344 VALID_PROTECTION_FAULT_ENABLE_DEFAULT, value);
345 tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
346 READ_PROTECTION_FAULT_ENABLE_DEFAULT, value);
347 tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
348 WRITE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
349 tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
350 EXECUTE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
351 if (!value) {
352 tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
353 CRASH_ON_NO_RETRY_FAULT, 1);
354 tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
355 CRASH_ON_RETRY_FAULT, 1);
356 }
357 WREG32_SOC15(GC, 0, mmVM_L2_PROTECTION_FAULT_CNTL, tmp);
358}
359
360void gfxhub_v1_0_init(struct amdgpu_device *adev)
361{
362 struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB_0];
363
364 hub->ctx0_ptb_addr_lo32 =
365 SOC15_REG_OFFSET(GC, 0,
366 mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32);
367 hub->ctx0_ptb_addr_hi32 =
368 SOC15_REG_OFFSET(GC, 0,
369 mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32);
370 hub->vm_inv_eng0_sem =
371 SOC15_REG_OFFSET(GC, 0, mmVM_INVALIDATE_ENG0_SEM);
372 hub->vm_inv_eng0_req =
373 SOC15_REG_OFFSET(GC, 0, mmVM_INVALIDATE_ENG0_REQ);
374 hub->vm_inv_eng0_ack =
375 SOC15_REG_OFFSET(GC, 0, mmVM_INVALIDATE_ENG0_ACK);
376 hub->vm_context0_cntl =
377 SOC15_REG_OFFSET(GC, 0, mmVM_CONTEXT0_CNTL);
378 hub->vm_l2_pro_fault_status =
379 SOC15_REG_OFFSET(GC, 0, mmVM_L2_PROTECTION_FAULT_STATUS);
380 hub->vm_l2_pro_fault_cntl =
381 SOC15_REG_OFFSET(GC, 0, mmVM_L2_PROTECTION_FAULT_CNTL);
382}