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1/*
2 * Copyright 2015 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 * Authors: Alex Deucher
23 */
24
25#include "amdgpu.h"
26#include "amdgpu_trace.h"
27#include "si.h"
28#include "sid.h"
29
30const u32 sdma_offsets[SDMA_MAX_INSTANCE] =
31{
32 DMA0_REGISTER_OFFSET,
33 DMA1_REGISTER_OFFSET
34};
35
36static void si_dma_set_ring_funcs(struct amdgpu_device *adev);
37static void si_dma_set_buffer_funcs(struct amdgpu_device *adev);
38static void si_dma_set_vm_pte_funcs(struct amdgpu_device *adev);
39static void si_dma_set_irq_funcs(struct amdgpu_device *adev);
40
41static uint64_t si_dma_ring_get_rptr(struct amdgpu_ring *ring)
42{
43 return ring->adev->wb.wb[ring->rptr_offs>>2];
44}
45
46static uint64_t si_dma_ring_get_wptr(struct amdgpu_ring *ring)
47{
48 struct amdgpu_device *adev = ring->adev;
49 u32 me = (ring == &adev->sdma.instance[0].ring) ? 0 : 1;
50
51 return (RREG32(DMA_RB_WPTR + sdma_offsets[me]) & 0x3fffc) >> 2;
52}
53
54static void si_dma_ring_set_wptr(struct amdgpu_ring *ring)
55{
56 struct amdgpu_device *adev = ring->adev;
57 u32 me = (ring == &adev->sdma.instance[0].ring) ? 0 : 1;
58
59 WREG32(DMA_RB_WPTR + sdma_offsets[me],
60 (lower_32_bits(ring->wptr) << 2) & 0x3fffc);
61}
62
63static void si_dma_ring_emit_ib(struct amdgpu_ring *ring,
64 struct amdgpu_job *job,
65 struct amdgpu_ib *ib,
66 uint32_t flags)
67{
68 unsigned vmid = AMDGPU_JOB_GET_VMID(job);
69 /* The indirect buffer packet must end on an 8 DW boundary in the DMA ring.
70 * Pad as necessary with NOPs.
71 */
72 while ((lower_32_bits(ring->wptr) & 7) != 5)
73 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0));
74 amdgpu_ring_write(ring, DMA_IB_PACKET(DMA_PACKET_INDIRECT_BUFFER, vmid, 0));
75 amdgpu_ring_write(ring, (ib->gpu_addr & 0xFFFFFFE0));
76 amdgpu_ring_write(ring, (ib->length_dw << 12) | (upper_32_bits(ib->gpu_addr) & 0xFF));
77
78}
79
80/**
81 * si_dma_ring_emit_fence - emit a fence on the DMA ring
82 *
83 * @ring: amdgpu ring pointer
84 * @fence: amdgpu fence object
85 *
86 * Add a DMA fence packet to the ring to write
87 * the fence seq number and DMA trap packet to generate
88 * an interrupt if needed (VI).
89 */
90static void si_dma_ring_emit_fence(struct amdgpu_ring *ring, u64 addr, u64 seq,
91 unsigned flags)
92{
93
94 bool write64bit = flags & AMDGPU_FENCE_FLAG_64BIT;
95 /* write the fence */
96 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_FENCE, 0, 0, 0, 0));
97 amdgpu_ring_write(ring, addr & 0xfffffffc);
98 amdgpu_ring_write(ring, (upper_32_bits(addr) & 0xff));
99 amdgpu_ring_write(ring, seq);
100 /* optionally write high bits as well */
101 if (write64bit) {
102 addr += 4;
103 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_FENCE, 0, 0, 0, 0));
104 amdgpu_ring_write(ring, addr & 0xfffffffc);
105 amdgpu_ring_write(ring, (upper_32_bits(addr) & 0xff));
106 amdgpu_ring_write(ring, upper_32_bits(seq));
107 }
108 /* generate an interrupt */
109 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_TRAP, 0, 0, 0, 0));
110}
111
112static void si_dma_stop(struct amdgpu_device *adev)
113{
114 struct amdgpu_ring *ring;
115 u32 rb_cntl;
116 unsigned i;
117
118 for (i = 0; i < adev->sdma.num_instances; i++) {
119 ring = &adev->sdma.instance[i].ring;
120 /* dma0 */
121 rb_cntl = RREG32(DMA_RB_CNTL + sdma_offsets[i]);
122 rb_cntl &= ~DMA_RB_ENABLE;
123 WREG32(DMA_RB_CNTL + sdma_offsets[i], rb_cntl);
124
125 if (adev->mman.buffer_funcs_ring == ring)
126 amdgpu_ttm_set_buffer_funcs_status(adev, false);
127 ring->sched.ready = false;
128 }
129}
130
131static int si_dma_start(struct amdgpu_device *adev)
132{
133 struct amdgpu_ring *ring;
134 u32 rb_cntl, dma_cntl, ib_cntl, rb_bufsz;
135 int i, r;
136 uint64_t rptr_addr;
137
138 for (i = 0; i < adev->sdma.num_instances; i++) {
139 ring = &adev->sdma.instance[i].ring;
140
141 WREG32(DMA_SEM_INCOMPLETE_TIMER_CNTL + sdma_offsets[i], 0);
142 WREG32(DMA_SEM_WAIT_FAIL_TIMER_CNTL + sdma_offsets[i], 0);
143
144 /* Set ring buffer size in dwords */
145 rb_bufsz = order_base_2(ring->ring_size / 4);
146 rb_cntl = rb_bufsz << 1;
147#ifdef __BIG_ENDIAN
148 rb_cntl |= DMA_RB_SWAP_ENABLE | DMA_RPTR_WRITEBACK_SWAP_ENABLE;
149#endif
150 WREG32(DMA_RB_CNTL + sdma_offsets[i], rb_cntl);
151
152 /* Initialize the ring buffer's read and write pointers */
153 WREG32(DMA_RB_RPTR + sdma_offsets[i], 0);
154 WREG32(DMA_RB_WPTR + sdma_offsets[i], 0);
155
156 rptr_addr = adev->wb.gpu_addr + (ring->rptr_offs * 4);
157
158 WREG32(DMA_RB_RPTR_ADDR_LO + sdma_offsets[i], lower_32_bits(rptr_addr));
159 WREG32(DMA_RB_RPTR_ADDR_HI + sdma_offsets[i], upper_32_bits(rptr_addr) & 0xFF);
160
161 rb_cntl |= DMA_RPTR_WRITEBACK_ENABLE;
162
163 WREG32(DMA_RB_BASE + sdma_offsets[i], ring->gpu_addr >> 8);
164
165 /* enable DMA IBs */
166 ib_cntl = DMA_IB_ENABLE | CMD_VMID_FORCE;
167#ifdef __BIG_ENDIAN
168 ib_cntl |= DMA_IB_SWAP_ENABLE;
169#endif
170 WREG32(DMA_IB_CNTL + sdma_offsets[i], ib_cntl);
171
172 dma_cntl = RREG32(DMA_CNTL + sdma_offsets[i]);
173 dma_cntl &= ~CTXEMPTY_INT_ENABLE;
174 WREG32(DMA_CNTL + sdma_offsets[i], dma_cntl);
175
176 ring->wptr = 0;
177 WREG32(DMA_RB_WPTR + sdma_offsets[i], lower_32_bits(ring->wptr) << 2);
178 WREG32(DMA_RB_CNTL + sdma_offsets[i], rb_cntl | DMA_RB_ENABLE);
179
180 ring->sched.ready = true;
181
182 r = amdgpu_ring_test_helper(ring);
183 if (r)
184 return r;
185
186 if (adev->mman.buffer_funcs_ring == ring)
187 amdgpu_ttm_set_buffer_funcs_status(adev, true);
188 }
189
190 return 0;
191}
192
193/**
194 * si_dma_ring_test_ring - simple async dma engine test
195 *
196 * @ring: amdgpu_ring structure holding ring information
197 *
198 * Test the DMA engine by writing using it to write an
199 * value to memory. (VI).
200 * Returns 0 for success, error for failure.
201 */
202static int si_dma_ring_test_ring(struct amdgpu_ring *ring)
203{
204 struct amdgpu_device *adev = ring->adev;
205 unsigned i;
206 unsigned index;
207 int r;
208 u32 tmp;
209 u64 gpu_addr;
210
211 r = amdgpu_device_wb_get(adev, &index);
212 if (r)
213 return r;
214
215 gpu_addr = adev->wb.gpu_addr + (index * 4);
216 tmp = 0xCAFEDEAD;
217 adev->wb.wb[index] = cpu_to_le32(tmp);
218
219 r = amdgpu_ring_alloc(ring, 4);
220 if (r)
221 goto error_free_wb;
222
223 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, 1));
224 amdgpu_ring_write(ring, lower_32_bits(gpu_addr));
225 amdgpu_ring_write(ring, upper_32_bits(gpu_addr) & 0xff);
226 amdgpu_ring_write(ring, 0xDEADBEEF);
227 amdgpu_ring_commit(ring);
228
229 for (i = 0; i < adev->usec_timeout; i++) {
230 tmp = le32_to_cpu(adev->wb.wb[index]);
231 if (tmp == 0xDEADBEEF)
232 break;
233 udelay(1);
234 }
235
236 if (i >= adev->usec_timeout)
237 r = -ETIMEDOUT;
238
239error_free_wb:
240 amdgpu_device_wb_free(adev, index);
241 return r;
242}
243
244/**
245 * si_dma_ring_test_ib - test an IB on the DMA engine
246 *
247 * @ring: amdgpu_ring structure holding ring information
248 *
249 * Test a simple IB in the DMA ring (VI).
250 * Returns 0 on success, error on failure.
251 */
252static int si_dma_ring_test_ib(struct amdgpu_ring *ring, long timeout)
253{
254 struct amdgpu_device *adev = ring->adev;
255 struct amdgpu_ib ib;
256 struct dma_fence *f = NULL;
257 unsigned index;
258 u32 tmp = 0;
259 u64 gpu_addr;
260 long r;
261
262 r = amdgpu_device_wb_get(adev, &index);
263 if (r)
264 return r;
265
266 gpu_addr = adev->wb.gpu_addr + (index * 4);
267 tmp = 0xCAFEDEAD;
268 adev->wb.wb[index] = cpu_to_le32(tmp);
269 memset(&ib, 0, sizeof(ib));
270 r = amdgpu_ib_get(adev, NULL, 256, &ib);
271 if (r)
272 goto err0;
273
274 ib.ptr[0] = DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, 1);
275 ib.ptr[1] = lower_32_bits(gpu_addr);
276 ib.ptr[2] = upper_32_bits(gpu_addr) & 0xff;
277 ib.ptr[3] = 0xDEADBEEF;
278 ib.length_dw = 4;
279 r = amdgpu_ib_schedule(ring, 1, &ib, NULL, &f);
280 if (r)
281 goto err1;
282
283 r = dma_fence_wait_timeout(f, false, timeout);
284 if (r == 0) {
285 r = -ETIMEDOUT;
286 goto err1;
287 } else if (r < 0) {
288 goto err1;
289 }
290 tmp = le32_to_cpu(adev->wb.wb[index]);
291 if (tmp == 0xDEADBEEF)
292 r = 0;
293 else
294 r = -EINVAL;
295
296err1:
297 amdgpu_ib_free(adev, &ib, NULL);
298 dma_fence_put(f);
299err0:
300 amdgpu_device_wb_free(adev, index);
301 return r;
302}
303
304/**
305 * cik_dma_vm_copy_pte - update PTEs by copying them from the GART
306 *
307 * @ib: indirect buffer to fill with commands
308 * @pe: addr of the page entry
309 * @src: src addr to copy from
310 * @count: number of page entries to update
311 *
312 * Update PTEs by copying them from the GART using DMA (SI).
313 */
314static void si_dma_vm_copy_pte(struct amdgpu_ib *ib,
315 uint64_t pe, uint64_t src,
316 unsigned count)
317{
318 unsigned bytes = count * 8;
319
320 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_COPY,
321 1, 0, 0, bytes);
322 ib->ptr[ib->length_dw++] = lower_32_bits(pe);
323 ib->ptr[ib->length_dw++] = lower_32_bits(src);
324 ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff;
325 ib->ptr[ib->length_dw++] = upper_32_bits(src) & 0xff;
326}
327
328/**
329 * si_dma_vm_write_pte - update PTEs by writing them manually
330 *
331 * @ib: indirect buffer to fill with commands
332 * @pe: addr of the page entry
333 * @value: dst addr to write into pe
334 * @count: number of page entries to update
335 * @incr: increase next addr by incr bytes
336 *
337 * Update PTEs by writing them manually using DMA (SI).
338 */
339static void si_dma_vm_write_pte(struct amdgpu_ib *ib, uint64_t pe,
340 uint64_t value, unsigned count,
341 uint32_t incr)
342{
343 unsigned ndw = count * 2;
344
345 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, ndw);
346 ib->ptr[ib->length_dw++] = lower_32_bits(pe);
347 ib->ptr[ib->length_dw++] = upper_32_bits(pe);
348 for (; ndw > 0; ndw -= 2) {
349 ib->ptr[ib->length_dw++] = lower_32_bits(value);
350 ib->ptr[ib->length_dw++] = upper_32_bits(value);
351 value += incr;
352 }
353}
354
355/**
356 * si_dma_vm_set_pte_pde - update the page tables using sDMA
357 *
358 * @ib: indirect buffer to fill with commands
359 * @pe: addr of the page entry
360 * @addr: dst addr to write into pe
361 * @count: number of page entries to update
362 * @incr: increase next addr by incr bytes
363 * @flags: access flags
364 *
365 * Update the page tables using sDMA (CIK).
366 */
367static void si_dma_vm_set_pte_pde(struct amdgpu_ib *ib,
368 uint64_t pe,
369 uint64_t addr, unsigned count,
370 uint32_t incr, uint64_t flags)
371{
372 uint64_t value;
373 unsigned ndw;
374
375 while (count) {
376 ndw = count * 2;
377 if (ndw > 0xFFFFE)
378 ndw = 0xFFFFE;
379
380 if (flags & AMDGPU_PTE_VALID)
381 value = addr;
382 else
383 value = 0;
384
385 /* for physically contiguous pages (vram) */
386 ib->ptr[ib->length_dw++] = DMA_PTE_PDE_PACKET(ndw);
387 ib->ptr[ib->length_dw++] = pe; /* dst addr */
388 ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff;
389 ib->ptr[ib->length_dw++] = lower_32_bits(flags); /* mask */
390 ib->ptr[ib->length_dw++] = upper_32_bits(flags);
391 ib->ptr[ib->length_dw++] = value; /* value */
392 ib->ptr[ib->length_dw++] = upper_32_bits(value);
393 ib->ptr[ib->length_dw++] = incr; /* increment size */
394 ib->ptr[ib->length_dw++] = 0;
395 pe += ndw * 4;
396 addr += (ndw / 2) * incr;
397 count -= ndw / 2;
398 }
399}
400
401/**
402 * si_dma_pad_ib - pad the IB to the required number of dw
403 *
404 * @ib: indirect buffer to fill with padding
405 *
406 */
407static void si_dma_ring_pad_ib(struct amdgpu_ring *ring, struct amdgpu_ib *ib)
408{
409 while (ib->length_dw & 0x7)
410 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0);
411}
412
413/**
414 * cik_sdma_ring_emit_pipeline_sync - sync the pipeline
415 *
416 * @ring: amdgpu_ring pointer
417 *
418 * Make sure all previous operations are completed (CIK).
419 */
420static void si_dma_ring_emit_pipeline_sync(struct amdgpu_ring *ring)
421{
422 uint32_t seq = ring->fence_drv.sync_seq;
423 uint64_t addr = ring->fence_drv.gpu_addr;
424
425 /* wait for idle */
426 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_POLL_REG_MEM, 0, 0, 0, 0) |
427 (1 << 27)); /* Poll memory */
428 amdgpu_ring_write(ring, lower_32_bits(addr));
429 amdgpu_ring_write(ring, (0xff << 16) | upper_32_bits(addr)); /* retry, addr_hi */
430 amdgpu_ring_write(ring, 0xffffffff); /* mask */
431 amdgpu_ring_write(ring, seq); /* value */
432 amdgpu_ring_write(ring, (3 << 28) | 0x20); /* func(equal) | poll interval */
433}
434
435/**
436 * si_dma_ring_emit_vm_flush - cik vm flush using sDMA
437 *
438 * @ring: amdgpu_ring pointer
439 * @vm: amdgpu_vm pointer
440 *
441 * Update the page table base and flush the VM TLB
442 * using sDMA (VI).
443 */
444static void si_dma_ring_emit_vm_flush(struct amdgpu_ring *ring,
445 unsigned vmid, uint64_t pd_addr)
446{
447 amdgpu_gmc_emit_flush_gpu_tlb(ring, vmid, pd_addr);
448
449 /* wait for invalidate to complete */
450 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_POLL_REG_MEM, 0, 0, 0, 0));
451 amdgpu_ring_write(ring, VM_INVALIDATE_REQUEST);
452 amdgpu_ring_write(ring, 0xff << 16); /* retry */
453 amdgpu_ring_write(ring, 1 << vmid); /* mask */
454 amdgpu_ring_write(ring, 0); /* value */
455 amdgpu_ring_write(ring, (0 << 28) | 0x20); /* func(always) | poll interval */
456}
457
458static void si_dma_ring_emit_wreg(struct amdgpu_ring *ring,
459 uint32_t reg, uint32_t val)
460{
461 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0));
462 amdgpu_ring_write(ring, (0xf << 16) | reg);
463 amdgpu_ring_write(ring, val);
464}
465
466static int si_dma_early_init(void *handle)
467{
468 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
469
470 adev->sdma.num_instances = 2;
471
472 si_dma_set_ring_funcs(adev);
473 si_dma_set_buffer_funcs(adev);
474 si_dma_set_vm_pte_funcs(adev);
475 si_dma_set_irq_funcs(adev);
476
477 return 0;
478}
479
480static int si_dma_sw_init(void *handle)
481{
482 struct amdgpu_ring *ring;
483 int r, i;
484 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
485
486 /* DMA0 trap event */
487 r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 224,
488 &adev->sdma.trap_irq);
489 if (r)
490 return r;
491
492 /* DMA1 trap event */
493 r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 244,
494 &adev->sdma.trap_irq);
495 if (r)
496 return r;
497
498 for (i = 0; i < adev->sdma.num_instances; i++) {
499 ring = &adev->sdma.instance[i].ring;
500 ring->ring_obj = NULL;
501 ring->use_doorbell = false;
502 sprintf(ring->name, "sdma%d", i);
503 r = amdgpu_ring_init(adev, ring, 1024,
504 &adev->sdma.trap_irq,
505 (i == 0) ?
506 AMDGPU_SDMA_IRQ_INSTANCE0 :
507 AMDGPU_SDMA_IRQ_INSTANCE1);
508 if (r)
509 return r;
510 }
511
512 return r;
513}
514
515static int si_dma_sw_fini(void *handle)
516{
517 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
518 int i;
519
520 for (i = 0; i < adev->sdma.num_instances; i++)
521 amdgpu_ring_fini(&adev->sdma.instance[i].ring);
522
523 return 0;
524}
525
526static int si_dma_hw_init(void *handle)
527{
528 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
529
530 return si_dma_start(adev);
531}
532
533static int si_dma_hw_fini(void *handle)
534{
535 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
536
537 si_dma_stop(adev);
538
539 return 0;
540}
541
542static int si_dma_suspend(void *handle)
543{
544 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
545
546 return si_dma_hw_fini(adev);
547}
548
549static int si_dma_resume(void *handle)
550{
551 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
552
553 return si_dma_hw_init(adev);
554}
555
556static bool si_dma_is_idle(void *handle)
557{
558 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
559 u32 tmp = RREG32(SRBM_STATUS2);
560
561 if (tmp & (DMA_BUSY_MASK | DMA1_BUSY_MASK))
562 return false;
563
564 return true;
565}
566
567static int si_dma_wait_for_idle(void *handle)
568{
569 unsigned i;
570 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
571
572 for (i = 0; i < adev->usec_timeout; i++) {
573 if (si_dma_is_idle(handle))
574 return 0;
575 udelay(1);
576 }
577 return -ETIMEDOUT;
578}
579
580static int si_dma_soft_reset(void *handle)
581{
582 DRM_INFO("si_dma_soft_reset --- not implemented !!!!!!!\n");
583 return 0;
584}
585
586static int si_dma_set_trap_irq_state(struct amdgpu_device *adev,
587 struct amdgpu_irq_src *src,
588 unsigned type,
589 enum amdgpu_interrupt_state state)
590{
591 u32 sdma_cntl;
592
593 switch (type) {
594 case AMDGPU_SDMA_IRQ_INSTANCE0:
595 switch (state) {
596 case AMDGPU_IRQ_STATE_DISABLE:
597 sdma_cntl = RREG32(DMA_CNTL + DMA0_REGISTER_OFFSET);
598 sdma_cntl &= ~TRAP_ENABLE;
599 WREG32(DMA_CNTL + DMA0_REGISTER_OFFSET, sdma_cntl);
600 break;
601 case AMDGPU_IRQ_STATE_ENABLE:
602 sdma_cntl = RREG32(DMA_CNTL + DMA0_REGISTER_OFFSET);
603 sdma_cntl |= TRAP_ENABLE;
604 WREG32(DMA_CNTL + DMA0_REGISTER_OFFSET, sdma_cntl);
605 break;
606 default:
607 break;
608 }
609 break;
610 case AMDGPU_SDMA_IRQ_INSTANCE1:
611 switch (state) {
612 case AMDGPU_IRQ_STATE_DISABLE:
613 sdma_cntl = RREG32(DMA_CNTL + DMA1_REGISTER_OFFSET);
614 sdma_cntl &= ~TRAP_ENABLE;
615 WREG32(DMA_CNTL + DMA1_REGISTER_OFFSET, sdma_cntl);
616 break;
617 case AMDGPU_IRQ_STATE_ENABLE:
618 sdma_cntl = RREG32(DMA_CNTL + DMA1_REGISTER_OFFSET);
619 sdma_cntl |= TRAP_ENABLE;
620 WREG32(DMA_CNTL + DMA1_REGISTER_OFFSET, sdma_cntl);
621 break;
622 default:
623 break;
624 }
625 break;
626 default:
627 break;
628 }
629 return 0;
630}
631
632static int si_dma_process_trap_irq(struct amdgpu_device *adev,
633 struct amdgpu_irq_src *source,
634 struct amdgpu_iv_entry *entry)
635{
636 if (entry->src_id == 224)
637 amdgpu_fence_process(&adev->sdma.instance[0].ring);
638 else
639 amdgpu_fence_process(&adev->sdma.instance[1].ring);
640 return 0;
641}
642
643static int si_dma_set_clockgating_state(void *handle,
644 enum amd_clockgating_state state)
645{
646 u32 orig, data, offset;
647 int i;
648 bool enable;
649 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
650
651 enable = (state == AMD_CG_STATE_GATE) ? true : false;
652
653 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_MGCG)) {
654 for (i = 0; i < adev->sdma.num_instances; i++) {
655 if (i == 0)
656 offset = DMA0_REGISTER_OFFSET;
657 else
658 offset = DMA1_REGISTER_OFFSET;
659 orig = data = RREG32(DMA_POWER_CNTL + offset);
660 data &= ~MEM_POWER_OVERRIDE;
661 if (data != orig)
662 WREG32(DMA_POWER_CNTL + offset, data);
663 WREG32(DMA_CLK_CTRL + offset, 0x00000100);
664 }
665 } else {
666 for (i = 0; i < adev->sdma.num_instances; i++) {
667 if (i == 0)
668 offset = DMA0_REGISTER_OFFSET;
669 else
670 offset = DMA1_REGISTER_OFFSET;
671 orig = data = RREG32(DMA_POWER_CNTL + offset);
672 data |= MEM_POWER_OVERRIDE;
673 if (data != orig)
674 WREG32(DMA_POWER_CNTL + offset, data);
675
676 orig = data = RREG32(DMA_CLK_CTRL + offset);
677 data = 0xff000000;
678 if (data != orig)
679 WREG32(DMA_CLK_CTRL + offset, data);
680 }
681 }
682
683 return 0;
684}
685
686static int si_dma_set_powergating_state(void *handle,
687 enum amd_powergating_state state)
688{
689 u32 tmp;
690
691 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
692
693 WREG32(DMA_PGFSM_WRITE, 0x00002000);
694 WREG32(DMA_PGFSM_CONFIG, 0x100010ff);
695
696 for (tmp = 0; tmp < 5; tmp++)
697 WREG32(DMA_PGFSM_WRITE, 0);
698
699 return 0;
700}
701
702static const struct amd_ip_funcs si_dma_ip_funcs = {
703 .name = "si_dma",
704 .early_init = si_dma_early_init,
705 .late_init = NULL,
706 .sw_init = si_dma_sw_init,
707 .sw_fini = si_dma_sw_fini,
708 .hw_init = si_dma_hw_init,
709 .hw_fini = si_dma_hw_fini,
710 .suspend = si_dma_suspend,
711 .resume = si_dma_resume,
712 .is_idle = si_dma_is_idle,
713 .wait_for_idle = si_dma_wait_for_idle,
714 .soft_reset = si_dma_soft_reset,
715 .set_clockgating_state = si_dma_set_clockgating_state,
716 .set_powergating_state = si_dma_set_powergating_state,
717};
718
719static const struct amdgpu_ring_funcs si_dma_ring_funcs = {
720 .type = AMDGPU_RING_TYPE_SDMA,
721 .align_mask = 0xf,
722 .nop = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0),
723 .support_64bit_ptrs = false,
724 .get_rptr = si_dma_ring_get_rptr,
725 .get_wptr = si_dma_ring_get_wptr,
726 .set_wptr = si_dma_ring_set_wptr,
727 .emit_frame_size =
728 3 + 3 + /* hdp flush / invalidate */
729 6 + /* si_dma_ring_emit_pipeline_sync */
730 SI_FLUSH_GPU_TLB_NUM_WREG * 3 + 6 + /* si_dma_ring_emit_vm_flush */
731 9 + 9 + 9, /* si_dma_ring_emit_fence x3 for user fence, vm fence */
732 .emit_ib_size = 7 + 3, /* si_dma_ring_emit_ib */
733 .emit_ib = si_dma_ring_emit_ib,
734 .emit_fence = si_dma_ring_emit_fence,
735 .emit_pipeline_sync = si_dma_ring_emit_pipeline_sync,
736 .emit_vm_flush = si_dma_ring_emit_vm_flush,
737 .test_ring = si_dma_ring_test_ring,
738 .test_ib = si_dma_ring_test_ib,
739 .insert_nop = amdgpu_ring_insert_nop,
740 .pad_ib = si_dma_ring_pad_ib,
741 .emit_wreg = si_dma_ring_emit_wreg,
742};
743
744static void si_dma_set_ring_funcs(struct amdgpu_device *adev)
745{
746 int i;
747
748 for (i = 0; i < adev->sdma.num_instances; i++)
749 adev->sdma.instance[i].ring.funcs = &si_dma_ring_funcs;
750}
751
752static const struct amdgpu_irq_src_funcs si_dma_trap_irq_funcs = {
753 .set = si_dma_set_trap_irq_state,
754 .process = si_dma_process_trap_irq,
755};
756
757static void si_dma_set_irq_funcs(struct amdgpu_device *adev)
758{
759 adev->sdma.trap_irq.num_types = AMDGPU_SDMA_IRQ_LAST;
760 adev->sdma.trap_irq.funcs = &si_dma_trap_irq_funcs;
761}
762
763/**
764 * si_dma_emit_copy_buffer - copy buffer using the sDMA engine
765 *
766 * @ring: amdgpu_ring structure holding ring information
767 * @src_offset: src GPU address
768 * @dst_offset: dst GPU address
769 * @byte_count: number of bytes to xfer
770 *
771 * Copy GPU buffers using the DMA engine (VI).
772 * Used by the amdgpu ttm implementation to move pages if
773 * registered as the asic copy callback.
774 */
775static void si_dma_emit_copy_buffer(struct amdgpu_ib *ib,
776 uint64_t src_offset,
777 uint64_t dst_offset,
778 uint32_t byte_count)
779{
780 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_COPY,
781 1, 0, 0, byte_count);
782 ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset);
783 ib->ptr[ib->length_dw++] = lower_32_bits(src_offset);
784 ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset) & 0xff;
785 ib->ptr[ib->length_dw++] = upper_32_bits(src_offset) & 0xff;
786}
787
788/**
789 * si_dma_emit_fill_buffer - fill buffer using the sDMA engine
790 *
791 * @ring: amdgpu_ring structure holding ring information
792 * @src_data: value to write to buffer
793 * @dst_offset: dst GPU address
794 * @byte_count: number of bytes to xfer
795 *
796 * Fill GPU buffers using the DMA engine (VI).
797 */
798static void si_dma_emit_fill_buffer(struct amdgpu_ib *ib,
799 uint32_t src_data,
800 uint64_t dst_offset,
801 uint32_t byte_count)
802{
803 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_CONSTANT_FILL,
804 0, 0, 0, byte_count / 4);
805 ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset);
806 ib->ptr[ib->length_dw++] = src_data;
807 ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset) << 16;
808}
809
810
811static const struct amdgpu_buffer_funcs si_dma_buffer_funcs = {
812 .copy_max_bytes = 0xffff8,
813 .copy_num_dw = 5,
814 .emit_copy_buffer = si_dma_emit_copy_buffer,
815
816 .fill_max_bytes = 0xffff8,
817 .fill_num_dw = 4,
818 .emit_fill_buffer = si_dma_emit_fill_buffer,
819};
820
821static void si_dma_set_buffer_funcs(struct amdgpu_device *adev)
822{
823 adev->mman.buffer_funcs = &si_dma_buffer_funcs;
824 adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
825}
826
827static const struct amdgpu_vm_pte_funcs si_dma_vm_pte_funcs = {
828 .copy_pte_num_dw = 5,
829 .copy_pte = si_dma_vm_copy_pte,
830
831 .write_pte = si_dma_vm_write_pte,
832 .set_pte_pde = si_dma_vm_set_pte_pde,
833};
834
835static void si_dma_set_vm_pte_funcs(struct amdgpu_device *adev)
836{
837 struct drm_gpu_scheduler *sched;
838 unsigned i;
839
840 adev->vm_manager.vm_pte_funcs = &si_dma_vm_pte_funcs;
841 for (i = 0; i < adev->sdma.num_instances; i++) {
842 sched = &adev->sdma.instance[i].ring.sched;
843 adev->vm_manager.vm_pte_rqs[i] =
844 &sched->sched_rq[DRM_SCHED_PRIORITY_KERNEL];
845 }
846 adev->vm_manager.vm_pte_num_rqs = adev->sdma.num_instances;
847}
848
849const struct amdgpu_ip_block_version si_dma_ip_block =
850{
851 .type = AMD_IP_BLOCK_TYPE_SDMA,
852 .major = 1,
853 .minor = 0,
854 .rev = 0,
855 .funcs = &si_dma_ip_funcs,
856};