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
24 #include <linux/pci.h>
25
26 #include "amdgpu.h"
27 #include "amdgpu_ih.h"
28 #include "soc15.h"
29
30 #include "oss/osssys_4_0_offset.h"
31 #include "oss/osssys_4_0_sh_mask.h"
32
33 #include "soc15_common.h"
34 #include "vega10_ih.h"
35
36 #define MAX_REARM_RETRY 10
37
38 static void vega10_ih_set_interrupt_funcs(struct amdgpu_device *adev);
39
40 /**
41 * vega10_ih_init_register_offset - Initialize register offset for ih rings
42 *
43 * @adev: amdgpu_device pointer
44 *
45 * Initialize register offset ih rings (VEGA10).
46 */
vega10_ih_init_register_offset(struct amdgpu_device * adev)47 static void vega10_ih_init_register_offset(struct amdgpu_device *adev)
48 {
49 struct amdgpu_ih_regs *ih_regs;
50
51 if (adev->irq.ih.ring_size) {
52 ih_regs = &adev->irq.ih.ih_regs;
53 ih_regs->ih_rb_base = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE);
54 ih_regs->ih_rb_base_hi = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_HI);
55 ih_regs->ih_rb_cntl = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL);
56 ih_regs->ih_rb_wptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR);
57 ih_regs->ih_rb_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR);
58 ih_regs->ih_doorbell_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_DOORBELL_RPTR);
59 ih_regs->ih_rb_wptr_addr_lo = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_ADDR_LO);
60 ih_regs->ih_rb_wptr_addr_hi = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_ADDR_HI);
61 ih_regs->psp_reg_id = PSP_REG_IH_RB_CNTL;
62 }
63
64 if (adev->irq.ih1.ring_size) {
65 ih_regs = &adev->irq.ih1.ih_regs;
66 ih_regs->ih_rb_base = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_RING1);
67 ih_regs->ih_rb_base_hi = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_HI_RING1);
68 ih_regs->ih_rb_cntl = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL_RING1);
69 ih_regs->ih_rb_wptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_RING1);
70 ih_regs->ih_rb_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR_RING1);
71 ih_regs->ih_doorbell_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_DOORBELL_RPTR_RING1);
72 ih_regs->psp_reg_id = PSP_REG_IH_RB_CNTL_RING1;
73 }
74
75 if (adev->irq.ih2.ring_size) {
76 ih_regs = &adev->irq.ih2.ih_regs;
77 ih_regs->ih_rb_base = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_RING2);
78 ih_regs->ih_rb_base_hi = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_HI_RING2);
79 ih_regs->ih_rb_cntl = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL_RING2);
80 ih_regs->ih_rb_wptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_RING2);
81 ih_regs->ih_rb_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR_RING2);
82 ih_regs->ih_doorbell_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_DOORBELL_RPTR_RING2);
83 ih_regs->psp_reg_id = PSP_REG_IH_RB_CNTL_RING2;
84 }
85 }
86
87 /**
88 * vega10_ih_toggle_ring_interrupts - toggle the interrupt ring buffer
89 *
90 * @adev: amdgpu_device pointer
91 * @ih: amdgpu_ih_ring pointet
92 * @enable: true - enable the interrupts, false - disable the interrupts
93 *
94 * Toggle the interrupt ring buffer (VEGA10)
95 */
vega10_ih_toggle_ring_interrupts(struct amdgpu_device * adev,struct amdgpu_ih_ring * ih,bool enable)96 static int vega10_ih_toggle_ring_interrupts(struct amdgpu_device *adev,
97 struct amdgpu_ih_ring *ih,
98 bool enable)
99 {
100 struct amdgpu_ih_regs *ih_regs;
101 uint32_t tmp;
102
103 ih_regs = &ih->ih_regs;
104
105 tmp = RREG32(ih_regs->ih_rb_cntl);
106 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_ENABLE, (enable ? 1 : 0));
107 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_GPU_TS_ENABLE, 1);
108 /* enable_intr field is only valid in ring0 */
109 if (ih == &adev->irq.ih)
110 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, ENABLE_INTR, (enable ? 1 : 0));
111 if (amdgpu_sriov_vf(adev)) {
112 if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp)) {
113 dev_err(adev->dev, "PSP program IH_RB_CNTL failed!\n");
114 return -ETIMEDOUT;
115 }
116 } else {
117 WREG32(ih_regs->ih_rb_cntl, tmp);
118 }
119
120 if (enable) {
121 ih->enabled = true;
122 } else {
123 /* set rptr, wptr to 0 */
124 WREG32(ih_regs->ih_rb_rptr, 0);
125 WREG32(ih_regs->ih_rb_wptr, 0);
126 ih->enabled = false;
127 ih->rptr = 0;
128 }
129
130 return 0;
131 }
132
133 /**
134 * vega10_ih_toggle_interrupts - Toggle all the available interrupt ring buffers
135 *
136 * @adev: amdgpu_device pointer
137 * @enable: enable or disable interrupt ring buffers
138 *
139 * Toggle all the available interrupt ring buffers (VEGA10).
140 */
vega10_ih_toggle_interrupts(struct amdgpu_device * adev,bool enable)141 static int vega10_ih_toggle_interrupts(struct amdgpu_device *adev, bool enable)
142 {
143 struct amdgpu_ih_ring *ih[] = {&adev->irq.ih, &adev->irq.ih1, &adev->irq.ih2};
144 int i;
145 int r;
146
147 for (i = 0; i < ARRAY_SIZE(ih); i++) {
148 if (ih[i]->ring_size) {
149 r = vega10_ih_toggle_ring_interrupts(adev, ih[i], enable);
150 if (r)
151 return r;
152 }
153 }
154
155 return 0;
156 }
157
vega10_ih_rb_cntl(struct amdgpu_ih_ring * ih,uint32_t ih_rb_cntl)158 static uint32_t vega10_ih_rb_cntl(struct amdgpu_ih_ring *ih, uint32_t ih_rb_cntl)
159 {
160 int rb_bufsz = order_base_2(ih->ring_size / 4);
161
162 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
163 MC_SPACE, ih->use_bus_addr ? 1 : 4);
164 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
165 WPTR_OVERFLOW_CLEAR, 1);
166 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
167 WPTR_OVERFLOW_ENABLE, 1);
168 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_SIZE, rb_bufsz);
169 /* Ring Buffer write pointer writeback. If enabled, IH_RB_WPTR register
170 * value is written to memory
171 */
172 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
173 WPTR_WRITEBACK_ENABLE, 1);
174 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_SNOOP, 1);
175 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_RO, 0);
176 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_VMID, 0);
177
178 return ih_rb_cntl;
179 }
180
vega10_ih_doorbell_rptr(struct amdgpu_ih_ring * ih)181 static uint32_t vega10_ih_doorbell_rptr(struct amdgpu_ih_ring *ih)
182 {
183 u32 ih_doorbell_rtpr = 0;
184
185 if (ih->use_doorbell) {
186 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
187 IH_DOORBELL_RPTR, OFFSET,
188 ih->doorbell_index);
189 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
190 IH_DOORBELL_RPTR,
191 ENABLE, 1);
192 } else {
193 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
194 IH_DOORBELL_RPTR,
195 ENABLE, 0);
196 }
197 return ih_doorbell_rtpr;
198 }
199
200 /**
201 * vega10_ih_enable_ring - enable an ih ring buffer
202 *
203 * @adev: amdgpu_device pointer
204 * @ih: amdgpu_ih_ring pointer
205 *
206 * Enable an ih ring buffer (VEGA10)
207 */
vega10_ih_enable_ring(struct amdgpu_device * adev,struct amdgpu_ih_ring * ih)208 static int vega10_ih_enable_ring(struct amdgpu_device *adev,
209 struct amdgpu_ih_ring *ih)
210 {
211 struct amdgpu_ih_regs *ih_regs;
212 uint32_t tmp;
213
214 ih_regs = &ih->ih_regs;
215
216 /* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/
217 WREG32(ih_regs->ih_rb_base, ih->gpu_addr >> 8);
218 WREG32(ih_regs->ih_rb_base_hi, (ih->gpu_addr >> 40) & 0xff);
219
220 tmp = RREG32(ih_regs->ih_rb_cntl);
221 tmp = vega10_ih_rb_cntl(ih, tmp);
222 if (ih == &adev->irq.ih)
223 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RPTR_REARM, !!adev->irq.msi_enabled);
224 if (ih == &adev->irq.ih1)
225 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_FULL_DRAIN_ENABLE, 1);
226 if (amdgpu_sriov_vf(adev)) {
227 if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp)) {
228 dev_err(adev->dev, "PSP program IH_RB_CNTL failed!\n");
229 return -ETIMEDOUT;
230 }
231 } else {
232 WREG32(ih_regs->ih_rb_cntl, tmp);
233 }
234
235 if (ih == &adev->irq.ih) {
236 /* set the ih ring 0 writeback address whether it's enabled or not */
237 WREG32(ih_regs->ih_rb_wptr_addr_lo, lower_32_bits(ih->wptr_addr));
238 WREG32(ih_regs->ih_rb_wptr_addr_hi, upper_32_bits(ih->wptr_addr) & 0xFFFF);
239 }
240
241 /* set rptr, wptr to 0 */
242 WREG32(ih_regs->ih_rb_wptr, 0);
243 WREG32(ih_regs->ih_rb_rptr, 0);
244
245 WREG32(ih_regs->ih_doorbell_rptr, vega10_ih_doorbell_rptr(ih));
246
247 return 0;
248 }
249
250 /**
251 * vega10_ih_irq_init - init and enable the interrupt ring
252 *
253 * @adev: amdgpu_device pointer
254 *
255 * Allocate a ring buffer for the interrupt controller,
256 * enable the RLC, disable interrupts, enable the IH
257 * ring buffer and enable it (VI).
258 * Called at device load and reume.
259 * Returns 0 for success, errors for failure.
260 */
vega10_ih_irq_init(struct amdgpu_device * adev)261 static int vega10_ih_irq_init(struct amdgpu_device *adev)
262 {
263 struct amdgpu_ih_ring *ih[] = {&adev->irq.ih, &adev->irq.ih1, &adev->irq.ih2};
264 u32 ih_chicken;
265 int ret;
266 int i;
267
268 /* disable irqs */
269 ret = vega10_ih_toggle_interrupts(adev, false);
270 if (ret)
271 return ret;
272
273 adev->nbio.funcs->ih_control(adev);
274
275 if (adev->asic_type == CHIP_RENOIR) {
276 ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN);
277 if (adev->irq.ih.use_bus_addr) {
278 ih_chicken = REG_SET_FIELD(ih_chicken, IH_CHICKEN,
279 MC_SPACE_GPA_ENABLE, 1);
280 }
281 WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN, ih_chicken);
282 }
283
284 for (i = 0; i < ARRAY_SIZE(ih); i++) {
285 if (ih[i]->ring_size) {
286 ret = vega10_ih_enable_ring(adev, ih[i]);
287 if (ret)
288 return ret;
289 }
290 }
291
292 if (!amdgpu_sriov_vf(adev))
293 adev->nbio.funcs->ih_doorbell_range(adev, adev->irq.ih.use_doorbell,
294 adev->irq.ih.doorbell_index);
295
296 pci_set_master(adev->pdev);
297
298 /* enable interrupts */
299 ret = vega10_ih_toggle_interrupts(adev, true);
300 if (ret)
301 return ret;
302
303 if (adev->irq.ih_soft.ring_size)
304 adev->irq.ih_soft.enabled = true;
305
306 return 0;
307 }
308
309 /**
310 * vega10_ih_irq_disable - disable interrupts
311 *
312 * @adev: amdgpu_device pointer
313 *
314 * Disable interrupts on the hw (VEGA10).
315 */
vega10_ih_irq_disable(struct amdgpu_device * adev)316 static void vega10_ih_irq_disable(struct amdgpu_device *adev)
317 {
318 vega10_ih_toggle_interrupts(adev, false);
319
320 /* Wait and acknowledge irq */
321 mdelay(1);
322 }
323
324 /**
325 * vega10_ih_get_wptr - get the IH ring buffer wptr
326 *
327 * @adev: amdgpu_device pointer
328 * @ih: IH ring buffer to fetch wptr
329 *
330 * Get the IH ring buffer wptr from either the register
331 * or the writeback memory buffer (VEGA10). Also check for
332 * ring buffer overflow and deal with it.
333 * Returns the value of the wptr.
334 */
vega10_ih_get_wptr(struct amdgpu_device * adev,struct amdgpu_ih_ring * ih)335 static u32 vega10_ih_get_wptr(struct amdgpu_device *adev,
336 struct amdgpu_ih_ring *ih)
337 {
338 u32 wptr, tmp;
339 struct amdgpu_ih_regs *ih_regs;
340
341 if (ih == &adev->irq.ih || ih == &adev->irq.ih_soft) {
342 /* Only ring0 supports writeback. On other rings fall back
343 * to register-based code with overflow checking below.
344 * ih_soft ring doesn't have any backing hardware registers,
345 * update wptr and return.
346 */
347 wptr = le32_to_cpu(*ih->wptr_cpu);
348
349 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
350 goto out;
351 }
352
353 ih_regs = &ih->ih_regs;
354
355 /* Double check that the overflow wasn't already cleared. */
356 wptr = RREG32_NO_KIQ(ih_regs->ih_rb_wptr);
357 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
358 goto out;
359
360 wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0);
361
362 /* When a ring buffer overflow happen start parsing interrupt
363 * from the last not overwritten vector (wptr + 32). Hopefully
364 * this should allow us to catchup.
365 */
366 tmp = (wptr + 32) & ih->ptr_mask;
367 dev_warn(adev->dev, "IH ring buffer overflow "
368 "(0x%08X, 0x%08X, 0x%08X)\n",
369 wptr, ih->rptr, tmp);
370 ih->rptr = tmp;
371
372 tmp = RREG32_NO_KIQ(ih_regs->ih_rb_cntl);
373 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
374 WREG32_NO_KIQ(ih_regs->ih_rb_cntl, tmp);
375
376 /* Unset the CLEAR_OVERFLOW bit immediately so new overflows
377 * can be detected.
378 */
379 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 0);
380 WREG32_NO_KIQ(ih_regs->ih_rb_cntl, tmp);
381
382 out:
383 return (wptr & ih->ptr_mask);
384 }
385
386 /**
387 * vega10_ih_irq_rearm - rearm IRQ if lost
388 *
389 * @adev: amdgpu_device pointer
390 * @ih: IH ring to match
391 *
392 */
vega10_ih_irq_rearm(struct amdgpu_device * adev,struct amdgpu_ih_ring * ih)393 static void vega10_ih_irq_rearm(struct amdgpu_device *adev,
394 struct amdgpu_ih_ring *ih)
395 {
396 uint32_t v = 0;
397 uint32_t i = 0;
398 struct amdgpu_ih_regs *ih_regs;
399
400 ih_regs = &ih->ih_regs;
401 /* Rearm IRQ / re-wwrite doorbell if doorbell write is lost */
402 for (i = 0; i < MAX_REARM_RETRY; i++) {
403 v = RREG32_NO_KIQ(ih_regs->ih_rb_rptr);
404 if ((v < ih->ring_size) && (v != ih->rptr))
405 WDOORBELL32(ih->doorbell_index, ih->rptr);
406 else
407 break;
408 }
409 }
410
411 /**
412 * vega10_ih_set_rptr - set the IH ring buffer rptr
413 *
414 * @adev: amdgpu_device pointer
415 * @ih: IH ring buffer to set rptr
416 *
417 * Set the IH ring buffer rptr.
418 */
vega10_ih_set_rptr(struct amdgpu_device * adev,struct amdgpu_ih_ring * ih)419 static void vega10_ih_set_rptr(struct amdgpu_device *adev,
420 struct amdgpu_ih_ring *ih)
421 {
422 struct amdgpu_ih_regs *ih_regs;
423
424 if (ih == &adev->irq.ih_soft)
425 return;
426
427 if (ih->use_doorbell) {
428 /* XXX check if swapping is necessary on BE */
429 *ih->rptr_cpu = ih->rptr;
430 WDOORBELL32(ih->doorbell_index, ih->rptr);
431
432 if (amdgpu_sriov_vf(adev))
433 vega10_ih_irq_rearm(adev, ih);
434 } else {
435 ih_regs = &ih->ih_regs;
436 WREG32(ih_regs->ih_rb_rptr, ih->rptr);
437 }
438 }
439
440 /**
441 * vega10_ih_self_irq - dispatch work for ring 1 and 2
442 *
443 * @adev: amdgpu_device pointer
444 * @source: irq source
445 * @entry: IV with WPTR update
446 *
447 * Update the WPTR from the IV and schedule work to handle the entries.
448 */
vega10_ih_self_irq(struct amdgpu_device * adev,struct amdgpu_irq_src * source,struct amdgpu_iv_entry * entry)449 static int vega10_ih_self_irq(struct amdgpu_device *adev,
450 struct amdgpu_irq_src *source,
451 struct amdgpu_iv_entry *entry)
452 {
453 switch (entry->ring_id) {
454 case 1:
455 schedule_work(&adev->irq.ih1_work);
456 break;
457 case 2:
458 schedule_work(&adev->irq.ih2_work);
459 break;
460 default: break;
461 }
462 return 0;
463 }
464
465 static const struct amdgpu_irq_src_funcs vega10_ih_self_irq_funcs = {
466 .process = vega10_ih_self_irq,
467 };
468
vega10_ih_set_self_irq_funcs(struct amdgpu_device * adev)469 static void vega10_ih_set_self_irq_funcs(struct amdgpu_device *adev)
470 {
471 adev->irq.self_irq.num_types = 0;
472 adev->irq.self_irq.funcs = &vega10_ih_self_irq_funcs;
473 }
474
vega10_ih_early_init(void * handle)475 static int vega10_ih_early_init(void *handle)
476 {
477 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
478
479 vega10_ih_set_interrupt_funcs(adev);
480 vega10_ih_set_self_irq_funcs(adev);
481 return 0;
482 }
483
vega10_ih_sw_init(void * handle)484 static int vega10_ih_sw_init(void *handle)
485 {
486 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
487 int r;
488
489 r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_IH, 0,
490 &adev->irq.self_irq);
491 if (r)
492 return r;
493
494 r = amdgpu_ih_ring_init(adev, &adev->irq.ih, IH_RING_SIZE, true);
495 if (r)
496 return r;
497
498 adev->irq.ih.use_doorbell = true;
499 adev->irq.ih.doorbell_index = adev->doorbell_index.ih << 1;
500
501 if (!(adev->flags & AMD_IS_APU)) {
502 r = amdgpu_ih_ring_init(adev, &adev->irq.ih1, PAGE_SIZE, true);
503 if (r)
504 return r;
505
506 adev->irq.ih1.use_doorbell = true;
507 adev->irq.ih1.doorbell_index = (adev->doorbell_index.ih + 1) << 1;
508
509 r = amdgpu_ih_ring_init(adev, &adev->irq.ih2, PAGE_SIZE, true);
510 if (r)
511 return r;
512
513 adev->irq.ih2.use_doorbell = true;
514 adev->irq.ih2.doorbell_index = (adev->doorbell_index.ih + 2) << 1;
515 }
516 /* initialize ih control registers offset */
517 vega10_ih_init_register_offset(adev);
518
519 r = amdgpu_ih_ring_init(adev, &adev->irq.ih_soft, IH_SW_RING_SIZE, true);
520 if (r)
521 return r;
522
523 r = amdgpu_irq_init(adev);
524
525 return r;
526 }
527
vega10_ih_sw_fini(void * handle)528 static int vega10_ih_sw_fini(void *handle)
529 {
530 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
531
532 amdgpu_irq_fini_sw(adev);
533
534 return 0;
535 }
536
vega10_ih_hw_init(void * handle)537 static int vega10_ih_hw_init(void *handle)
538 {
539 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
540
541 return vega10_ih_irq_init(adev);
542 }
543
vega10_ih_hw_fini(void * handle)544 static int vega10_ih_hw_fini(void *handle)
545 {
546 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
547
548 vega10_ih_irq_disable(adev);
549
550 return 0;
551 }
552
vega10_ih_suspend(void * handle)553 static int vega10_ih_suspend(void *handle)
554 {
555 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
556
557 return vega10_ih_hw_fini(adev);
558 }
559
vega10_ih_resume(void * handle)560 static int vega10_ih_resume(void *handle)
561 {
562 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
563
564 return vega10_ih_hw_init(adev);
565 }
566
vega10_ih_is_idle(void * handle)567 static bool vega10_ih_is_idle(void *handle)
568 {
569 /* todo */
570 return true;
571 }
572
vega10_ih_wait_for_idle(void * handle)573 static int vega10_ih_wait_for_idle(void *handle)
574 {
575 /* todo */
576 return -ETIMEDOUT;
577 }
578
vega10_ih_soft_reset(void * handle)579 static int vega10_ih_soft_reset(void *handle)
580 {
581 /* todo */
582
583 return 0;
584 }
585
vega10_ih_update_clockgating_state(struct amdgpu_device * adev,bool enable)586 static void vega10_ih_update_clockgating_state(struct amdgpu_device *adev,
587 bool enable)
588 {
589 uint32_t data, def, field_val;
590
591 if (adev->cg_flags & AMD_CG_SUPPORT_IH_CG) {
592 def = data = RREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL);
593 field_val = enable ? 0 : 1;
594 /**
595 * Vega10/12 and RAVEN don't have IH_BUFFER_MEM_CLK_SOFT_OVERRIDE field.
596 */
597 if (adev->asic_type == CHIP_RENOIR)
598 data = REG_SET_FIELD(data, IH_CLK_CTRL,
599 IH_BUFFER_MEM_CLK_SOFT_OVERRIDE, field_val);
600
601 data = REG_SET_FIELD(data, IH_CLK_CTRL,
602 DBUS_MUX_CLK_SOFT_OVERRIDE, field_val);
603 data = REG_SET_FIELD(data, IH_CLK_CTRL,
604 OSSSYS_SHARE_CLK_SOFT_OVERRIDE, field_val);
605 data = REG_SET_FIELD(data, IH_CLK_CTRL,
606 LIMIT_SMN_CLK_SOFT_OVERRIDE, field_val);
607 data = REG_SET_FIELD(data, IH_CLK_CTRL,
608 DYN_CLK_SOFT_OVERRIDE, field_val);
609 data = REG_SET_FIELD(data, IH_CLK_CTRL,
610 REG_CLK_SOFT_OVERRIDE, field_val);
611 if (def != data)
612 WREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL, data);
613 }
614 }
615
vega10_ih_set_clockgating_state(void * handle,enum amd_clockgating_state state)616 static int vega10_ih_set_clockgating_state(void *handle,
617 enum amd_clockgating_state state)
618 {
619 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
620
621 vega10_ih_update_clockgating_state(adev,
622 state == AMD_CG_STATE_GATE);
623 return 0;
624
625 }
626
vega10_ih_set_powergating_state(void * handle,enum amd_powergating_state state)627 static int vega10_ih_set_powergating_state(void *handle,
628 enum amd_powergating_state state)
629 {
630 return 0;
631 }
632
633 const struct amd_ip_funcs vega10_ih_ip_funcs = {
634 .name = "vega10_ih",
635 .early_init = vega10_ih_early_init,
636 .late_init = NULL,
637 .sw_init = vega10_ih_sw_init,
638 .sw_fini = vega10_ih_sw_fini,
639 .hw_init = vega10_ih_hw_init,
640 .hw_fini = vega10_ih_hw_fini,
641 .suspend = vega10_ih_suspend,
642 .resume = vega10_ih_resume,
643 .is_idle = vega10_ih_is_idle,
644 .wait_for_idle = vega10_ih_wait_for_idle,
645 .soft_reset = vega10_ih_soft_reset,
646 .set_clockgating_state = vega10_ih_set_clockgating_state,
647 .set_powergating_state = vega10_ih_set_powergating_state,
648 };
649
650 static const struct amdgpu_ih_funcs vega10_ih_funcs = {
651 .get_wptr = vega10_ih_get_wptr,
652 .decode_iv = amdgpu_ih_decode_iv_helper,
653 .decode_iv_ts = amdgpu_ih_decode_iv_ts_helper,
654 .set_rptr = vega10_ih_set_rptr
655 };
656
vega10_ih_set_interrupt_funcs(struct amdgpu_device * adev)657 static void vega10_ih_set_interrupt_funcs(struct amdgpu_device *adev)
658 {
659 adev->irq.ih_funcs = &vega10_ih_funcs;
660 }
661
662 const struct amdgpu_ip_block_version vega10_ih_ip_block =
663 {
664 .type = AMD_IP_BLOCK_TYPE_IH,
665 .major = 4,
666 .minor = 0,
667 .rev = 0,
668 .funcs = &vega10_ih_ip_funcs,
669 };
670