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drm/amdgpu: implement more ib pools (v2)
[linux-block.git] / drivers / gpu / drm / amd / amdgpu / si_dma.c
CommitLineData
30d1574f
KW		 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 */
47b757fb 24
30d1574f
KW		 25#include "amdgpu.h"
26#include "amdgpu_trace.h"
4fef88bd 27#include "si.h"
689957b1 28#include "sid.h"
30d1574f
KW		 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
536fbf94 41static uint64_t si_dma_ring_get_rptr(struct amdgpu_ring *ring)
30d1574f 42{
cb5df31b 43 return ring->adev->wb.wb[ring->rptr_offs>>2];
30d1574f
KW		 44}
45
536fbf94 46static uint64_t si_dma_ring_get_wptr(struct amdgpu_ring *ring)
30d1574f 47{
30d1574f
KW		 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
536fbf94
KW		 59 WREG32(DMA_RB_WPTR + sdma_offsets[me],
60 (lower_32_bits(ring->wptr) << 2) & 0x3fffc);
30d1574f
KW		 61}
62
63static void si_dma_ring_emit_ib(struct amdgpu_ring *ring,
34955e03 64 struct amdgpu_job *job,
30d1574f 65 struct amdgpu_ib *ib,
c4c905ec 66 uint32_t flags)
30d1574f 67{
34955e03 68 unsigned vmid = AMDGPU_JOB_GET_VMID(job);
30d1574f
KW		 69 /* The indirect buffer packet must end on an 8 DW boundary in the DMA ring.
70 * Pad as necessary with NOPs.
71 */
536fbf94 72 while ((lower_32_bits(ring->wptr) & 7) != 5)
30d1574f 73 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0));
c4f46f22 74 amdgpu_ring_write(ring, DMA_IB_PACKET(DMA_PACKET_INDIRECT_BUFFER, vmid, 0));
30d1574f
KW		 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
30d1574f
KW		 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
e7b54945 125 if (adev->mman.buffer_funcs_ring == ring)
57adc4ce 126 amdgpu_ttm_set_buffer_funcs_status(adev, false);
c66ed765 127 ring->sched.ready = false;
30d1574f
KW		 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;
536fbf94 177 WREG32(DMA_RB_WPTR + sdma_offsets[i], lower_32_bits(ring->wptr) << 2);
30d1574f
KW		 178 WREG32(DMA_RB_CNTL + sdma_offsets[i], rb_cntl | DMA_RB_ENABLE);
179
c66ed765 180 ring->sched.ready = true;
30d1574f 181
c66ed765
AG		 182 r = amdgpu_ring_test_helper(ring);
183 if (r)
30d1574f 184 return r;
e7b54945
MD		 185
186 if (adev->mman.buffer_funcs_ring == ring)
57adc4ce 187 amdgpu_ttm_set_buffer_funcs_status(adev, true);
30d1574f
KW		 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
131b4b36 211 r = amdgpu_device_wb_get(adev, &index);
dc9eeff8 212 if (r)
30d1574f 213 return r;
30d1574f
KW		 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);
dc9eeff8
CK		 220 if (r)
221 goto error_free_wb;
30d1574f
KW		 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;
c366be54 233 udelay(1);
30d1574f
KW		 234 }
235
dc9eeff8
CK		 236 if (i >= adev->usec_timeout)
237 r = -ETIMEDOUT;
30d1574f 238
dc9eeff8
CK		 239error_free_wb:
240 amdgpu_device_wb_free(adev, index);
30d1574f
KW		 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;
f54d1867 256 struct dma_fence *f = NULL;
30d1574f
KW		 257 unsigned index;
258 u32 tmp = 0;
259 u64 gpu_addr;
260 long r;
261
131b4b36 262 r = amdgpu_device_wb_get(adev, &index);
98079389 263 if (r)
30d1574f 264 return r;
30d1574f
KW		 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));
c8e42d57 270 r = amdgpu_ib_get(adev, NULL, 256,
271 AMDGPU_IB_POOL_DIRECT, &ib);
98079389 272 if (r)
30d1574f 273 goto err0;
30d1574f
KW		 274
275 ib.ptr[0] = DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, 1);
276 ib.ptr[1] = lower_32_bits(gpu_addr);
277 ib.ptr[2] = upper_32_bits(gpu_addr) & 0xff;
278 ib.ptr[3] = 0xDEADBEEF;
279 ib.length_dw = 4;
50ddc75e 280 r = amdgpu_ib_schedule(ring, 1, &ib, NULL, &f);
30d1574f
KW		 281 if (r)
282 goto err1;
283
f54d1867 284 r = dma_fence_wait_timeout(f, false, timeout);
30d1574f 285 if (r == 0) {
30d1574f
KW		 286 r = -ETIMEDOUT;
287 goto err1;
288 } else if (r < 0) {
30d1574f
KW		 289 goto err1;
290 }
291 tmp = le32_to_cpu(adev->wb.wb[index]);
b7ff853f 292 if (tmp == 0xDEADBEEF)
30d1574f 293 r = 0;
b7ff853f 294 else
30d1574f 295 r = -EINVAL;
30d1574f
KW		 296
297err1:
298 amdgpu_ib_free(adev, &ib, NULL);
f54d1867 299 dma_fence_put(f);
30d1574f 300err0:
131b4b36 301 amdgpu_device_wb_free(adev, index);
30d1574f
KW		 302 return r;
303}
304
305/**
306 * cik_dma_vm_copy_pte - update PTEs by copying them from the GART
307 *
308 * @ib: indirect buffer to fill with commands
309 * @pe: addr of the page entry
310 * @src: src addr to copy from
311 * @count: number of page entries to update
312 *
313 * Update PTEs by copying them from the GART using DMA (SI).
314 */
315static void si_dma_vm_copy_pte(struct amdgpu_ib *ib,
316 uint64_t pe, uint64_t src,
317 unsigned count)
318{
319 unsigned bytes = count * 8;
320
321 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_COPY,
322 1, 0, 0, bytes);
323 ib->ptr[ib->length_dw++] = lower_32_bits(pe);
324 ib->ptr[ib->length_dw++] = lower_32_bits(src);
325 ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff;
326 ib->ptr[ib->length_dw++] = upper_32_bits(src) & 0xff;
327}
328
329/**
330 * si_dma_vm_write_pte - update PTEs by writing them manually
331 *
332 * @ib: indirect buffer to fill with commands
333 * @pe: addr of the page entry
334 * @value: dst addr to write into pe
335 * @count: number of page entries to update
336 * @incr: increase next addr by incr bytes
337 *
338 * Update PTEs by writing them manually using DMA (SI).
339 */
340static void si_dma_vm_write_pte(struct amdgpu_ib *ib, uint64_t pe,
341 uint64_t value, unsigned count,
342 uint32_t incr)
343{
344 unsigned ndw = count * 2;
345
346 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, ndw);
347 ib->ptr[ib->length_dw++] = lower_32_bits(pe);
348 ib->ptr[ib->length_dw++] = upper_32_bits(pe);
349 for (; ndw > 0; ndw -= 2) {
350 ib->ptr[ib->length_dw++] = lower_32_bits(value);
351 ib->ptr[ib->length_dw++] = upper_32_bits(value);
352 value += incr;
353 }
354}
355
356/**
357 * si_dma_vm_set_pte_pde - update the page tables using sDMA
358 *
359 * @ib: indirect buffer to fill with commands
360 * @pe: addr of the page entry
361 * @addr: dst addr to write into pe
362 * @count: number of page entries to update
363 * @incr: increase next addr by incr bytes
364 * @flags: access flags
365 *
366 * Update the page tables using sDMA (CIK).
367 */
368static void si_dma_vm_set_pte_pde(struct amdgpu_ib *ib,
369 uint64_t pe,
370 uint64_t addr, unsigned count,
6b777607 371 uint32_t incr, uint64_t flags)
30d1574f
KW		 372{
373 uint64_t value;
374 unsigned ndw;
375
376 while (count) {
377 ndw = count * 2;
378 if (ndw > 0xFFFFE)
379 ndw = 0xFFFFE;
380
381 if (flags & AMDGPU_PTE_VALID)
382 value = addr;
383 else
384 value = 0;
385
386 /* for physically contiguous pages (vram) */
387 ib->ptr[ib->length_dw++] = DMA_PTE_PDE_PACKET(ndw);
388 ib->ptr[ib->length_dw++] = pe; /* dst addr */
389 ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff;
b9be700e
JZ		 390 ib->ptr[ib->length_dw++] = lower_32_bits(flags); /* mask */
391 ib->ptr[ib->length_dw++] = upper_32_bits(flags);
30d1574f
KW		 392 ib->ptr[ib->length_dw++] = value; /* value */
393 ib->ptr[ib->length_dw++] = upper_32_bits(value);
394 ib->ptr[ib->length_dw++] = incr; /* increment size */
395 ib->ptr[ib->length_dw++] = 0;
396 pe += ndw * 4;
397 addr += (ndw / 2) * incr;
398 count -= ndw / 2;
399 }
400}
401
402/**
403 * si_dma_pad_ib - pad the IB to the required number of dw
404 *
405 * @ib: indirect buffer to fill with padding
406 *
407 */
408static void si_dma_ring_pad_ib(struct amdgpu_ring *ring, struct amdgpu_ib *ib)
409{
410 while (ib->length_dw & 0x7)
411 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0);
412}
413
414/**
415 * cik_sdma_ring_emit_pipeline_sync - sync the pipeline
416 *
417 * @ring: amdgpu_ring pointer
418 *
419 * Make sure all previous operations are completed (CIK).
420 */
421static void si_dma_ring_emit_pipeline_sync(struct amdgpu_ring *ring)
422{
423 uint32_t seq = ring->fence_drv.sync_seq;
424 uint64_t addr = ring->fence_drv.gpu_addr;
425
426 /* wait for idle */
427 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_POLL_REG_MEM, 0, 0, 0, 0) |
428 (1 << 27)); /* Poll memory */
429 amdgpu_ring_write(ring, lower_32_bits(addr));
430 amdgpu_ring_write(ring, (0xff << 16) | upper_32_bits(addr)); /* retry, addr_hi */
431 amdgpu_ring_write(ring, 0xffffffff); /* mask */
432 amdgpu_ring_write(ring, seq); /* value */
433 amdgpu_ring_write(ring, (3 << 28) | 0x20); /* func(equal) | poll interval */
434}
435
436/**
437 * si_dma_ring_emit_vm_flush - cik vm flush using sDMA
438 *
439 * @ring: amdgpu_ring pointer
440 * @vm: amdgpu_vm pointer
441 *
442 * Update the page table base and flush the VM TLB
443 * using sDMA (VI).
444 */
445static void si_dma_ring_emit_vm_flush(struct amdgpu_ring *ring,
c633c00b 446 unsigned vmid, uint64_t pd_addr)
30d1574f 447{
c633c00b 448 amdgpu_gmc_emit_flush_gpu_tlb(ring, vmid, pd_addr);
30d1574f
KW		 449
450 /* wait for invalidate to complete */
451 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_POLL_REG_MEM, 0, 0, 0, 0));
452 amdgpu_ring_write(ring, VM_INVALIDATE_REQUEST);
453 amdgpu_ring_write(ring, 0xff << 16); /* retry */
c4f46f22 454 amdgpu_ring_write(ring, 1 << vmid); /* mask */
30d1574f
KW		 455 amdgpu_ring_write(ring, 0); /* value */
456 amdgpu_ring_write(ring, (0 << 28) | 0x20); /* func(always) | poll interval */
457}
458
5b9263d9
CK		 459static void si_dma_ring_emit_wreg(struct amdgpu_ring *ring,
460 uint32_t reg, uint32_t val)
461{
462 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0));
463 amdgpu_ring_write(ring, (0xf << 16) | reg);
464 amdgpu_ring_write(ring, val);
465}
466
30d1574f
KW		 467static int si_dma_early_init(void *handle)
468{
469 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
470
471 adev->sdma.num_instances = 2;
472
473 si_dma_set_ring_funcs(adev);
474 si_dma_set_buffer_funcs(adev);
475 si_dma_set_vm_pte_funcs(adev);
476 si_dma_set_irq_funcs(adev);
477
478 return 0;
479}
480
481static int si_dma_sw_init(void *handle)
482{
483 struct amdgpu_ring *ring;
484 int r, i;
485 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
486
487 /* DMA0 trap event */
4eb10b5b
CK		 488 r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 224,
489 &adev->sdma.trap_irq);
30d1574f
KW		 490 if (r)
491 return r;
492
493 /* DMA1 trap event */
4eb10b5b
CK		 494 r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 244,
495 &adev->sdma.trap_irq);
30d1574f
KW		 496 if (r)
497 return r;
498
499 for (i = 0; i < adev->sdma.num_instances; i++) {
500 ring = &adev->sdma.instance[i].ring;
501 ring->ring_obj = NULL;
502 ring->use_doorbell = false;
503 sprintf(ring->name, "sdma%d", i);
504 r = amdgpu_ring_init(adev, ring, 1024,
30d1574f
KW		 505 &adev->sdma.trap_irq,
506 (i == 0) ?
af67772d
ED		 507 AMDGPU_SDMA_IRQ_INSTANCE0 :
508 AMDGPU_SDMA_IRQ_INSTANCE1);
30d1574f
KW		 509 if (r)
510 return r;
511 }
512
513 return r;
514}
515
516static int si_dma_sw_fini(void *handle)
517{
518 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
519 int i;
520
521 for (i = 0; i < adev->sdma.num_instances; i++)
522 amdgpu_ring_fini(&adev->sdma.instance[i].ring);
523
524 return 0;
525}
526
527static int si_dma_hw_init(void *handle)
528{
30d1574f
KW		 529 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
530
cb5df31b 531 return si_dma_start(adev);
30d1574f
KW		 532}
533
534static int si_dma_hw_fini(void *handle)
535{
536 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
537
538 si_dma_stop(adev);
539
540 return 0;
541}
542
543static int si_dma_suspend(void *handle)
544{
545 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
546
547 return si_dma_hw_fini(adev);
548}
549
550static int si_dma_resume(void *handle)
551{
552 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
553
554 return si_dma_hw_init(adev);
555}
556
557static bool si_dma_is_idle(void *handle)
558{
559 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
560 u32 tmp = RREG32(SRBM_STATUS2);
561
562 if (tmp & (DMA_BUSY_MASK | DMA1_BUSY_MASK))
563 return false;
564
565 return true;
566}
567
568static int si_dma_wait_for_idle(void *handle)
569{
570 unsigned i;
30d1574f
KW		 571 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
572
573 for (i = 0; i < adev->usec_timeout; i++) {
cb5df31b 574 if (si_dma_is_idle(handle))
30d1574f
KW		 575 return 0;
576 udelay(1);
577 }
578 return -ETIMEDOUT;
579}
580
581static int si_dma_soft_reset(void *handle)
582{
583 DRM_INFO("si_dma_soft_reset --- not implemented !!!!!!!\n");
584 return 0;
585}
586
587static int si_dma_set_trap_irq_state(struct amdgpu_device *adev,
588 struct amdgpu_irq_src *src,
589 unsigned type,
590 enum amdgpu_interrupt_state state)
591{
592 u32 sdma_cntl;
593
594 switch (type) {
af67772d 595 case AMDGPU_SDMA_IRQ_INSTANCE0:
30d1574f
KW		 596 switch (state) {
597 case AMDGPU_IRQ_STATE_DISABLE:
598 sdma_cntl = RREG32(DMA_CNTL + DMA0_REGISTER_OFFSET);
599 sdma_cntl &= ~TRAP_ENABLE;
600 WREG32(DMA_CNTL + DMA0_REGISTER_OFFSET, sdma_cntl);
601 break;
602 case AMDGPU_IRQ_STATE_ENABLE:
603 sdma_cntl = RREG32(DMA_CNTL + DMA0_REGISTER_OFFSET);
604 sdma_cntl |= TRAP_ENABLE;
605 WREG32(DMA_CNTL + DMA0_REGISTER_OFFSET, sdma_cntl);
606 break;
607 default:
608 break;
609 }
610 break;
af67772d 611 case AMDGPU_SDMA_IRQ_INSTANCE1:
30d1574f
KW		 612 switch (state) {
613 case AMDGPU_IRQ_STATE_DISABLE:
614 sdma_cntl = RREG32(DMA_CNTL + DMA1_REGISTER_OFFSET);
615 sdma_cntl &= ~TRAP_ENABLE;
616 WREG32(DMA_CNTL + DMA1_REGISTER_OFFSET, sdma_cntl);
617 break;
618 case AMDGPU_IRQ_STATE_ENABLE:
619 sdma_cntl = RREG32(DMA_CNTL + DMA1_REGISTER_OFFSET);
620 sdma_cntl |= TRAP_ENABLE;
621 WREG32(DMA_CNTL + DMA1_REGISTER_OFFSET, sdma_cntl);
622 break;
623 default:
624 break;
625 }
626 break;
627 default:
628 break;
629 }
630 return 0;
631}
632
633static int si_dma_process_trap_irq(struct amdgpu_device *adev,
634 struct amdgpu_irq_src *source,
635 struct amdgpu_iv_entry *entry)
636{
4eb10b5b
CK		 637 if (entry->src_id == 224)
638 amdgpu_fence_process(&adev->sdma.instance[0].ring);
639 else
640 amdgpu_fence_process(&adev->sdma.instance[1].ring);
30d1574f
KW		 641 return 0;
642}
643
30d1574f
KW		 644static int si_dma_set_clockgating_state(void *handle,
645 enum amd_clockgating_state state)
646{
647 u32 orig, data, offset;
648 int i;
649 bool enable;
650 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
651
a9d4fe2f 652 enable = (state == AMD_CG_STATE_GATE);
30d1574f
KW		 653
654 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_MGCG)) {
655 for (i = 0; i < adev->sdma.num_instances; i++) {
656 if (i == 0)
657 offset = DMA0_REGISTER_OFFSET;
658 else
659 offset = DMA1_REGISTER_OFFSET;
660 orig = data = RREG32(DMA_POWER_CNTL + offset);
661 data &= ~MEM_POWER_OVERRIDE;
662 if (data != orig)
663 WREG32(DMA_POWER_CNTL + offset, data);
664 WREG32(DMA_CLK_CTRL + offset, 0x00000100);
665 }
666 } else {
667 for (i = 0; i < adev->sdma.num_instances; i++) {
668 if (i == 0)
669 offset = DMA0_REGISTER_OFFSET;
670 else
671 offset = DMA1_REGISTER_OFFSET;
672 orig = data = RREG32(DMA_POWER_CNTL + offset);
673 data |= MEM_POWER_OVERRIDE;
674 if (data != orig)
675 WREG32(DMA_POWER_CNTL + offset, data);
676
677 orig = data = RREG32(DMA_CLK_CTRL + offset);
678 data = 0xff000000;
679 if (data != orig)
680 WREG32(DMA_CLK_CTRL + offset, data);
681 }
682 }
683
684 return 0;
685}
686
687static int si_dma_set_powergating_state(void *handle,
688 enum amd_powergating_state state)
689{
690 u32 tmp;
691
692 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
693
694 WREG32(DMA_PGFSM_WRITE, 0x00002000);
695 WREG32(DMA_PGFSM_CONFIG, 0x100010ff);
696
697 for (tmp = 0; tmp < 5; tmp++)
698 WREG32(DMA_PGFSM_WRITE, 0);
699
700 return 0;
701}
702
a1255107 703static const struct amd_ip_funcs si_dma_ip_funcs = {
30d1574f
KW		 704 .name = "si_dma",
705 .early_init = si_dma_early_init,
706 .late_init = NULL,
707 .sw_init = si_dma_sw_init,
708 .sw_fini = si_dma_sw_fini,
709 .hw_init = si_dma_hw_init,
710 .hw_fini = si_dma_hw_fini,
711 .suspend = si_dma_suspend,
712 .resume = si_dma_resume,
713 .is_idle = si_dma_is_idle,
714 .wait_for_idle = si_dma_wait_for_idle,
715 .soft_reset = si_dma_soft_reset,
716 .set_clockgating_state = si_dma_set_clockgating_state,
717 .set_powergating_state = si_dma_set_powergating_state,
718};
719
720static const struct amdgpu_ring_funcs si_dma_ring_funcs = {
21cd942e 721 .type = AMDGPU_RING_TYPE_SDMA,
79887142
CK		 722 .align_mask = 0xf,
723 .nop = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0),
536fbf94 724 .support_64bit_ptrs = false,
30d1574f
KW		 725 .get_rptr = si_dma_ring_get_rptr,
726 .get_wptr = si_dma_ring_get_wptr,
727 .set_wptr = si_dma_ring_set_wptr,
e12f3d7a 728 .emit_frame_size =
2ee150cd 729 3 + 3 + /* hdp flush / invalidate */
e12f3d7a 730 6 + /* si_dma_ring_emit_pipeline_sync */
4fef88bd 731 SI_FLUSH_GPU_TLB_NUM_WREG * 3 + 6 + /* si_dma_ring_emit_vm_flush */
e12f3d7a
CK		 732 9 + 9 + 9, /* si_dma_ring_emit_fence x3 for user fence, vm fence */
733 .emit_ib_size = 7 + 3, /* si_dma_ring_emit_ib */
30d1574f
KW		 734 .emit_ib = si_dma_ring_emit_ib,
735 .emit_fence = si_dma_ring_emit_fence,
736 .emit_pipeline_sync = si_dma_ring_emit_pipeline_sync,
737 .emit_vm_flush = si_dma_ring_emit_vm_flush,
30d1574f
KW		 738 .test_ring = si_dma_ring_test_ring,
739 .test_ib = si_dma_ring_test_ib,
740 .insert_nop = amdgpu_ring_insert_nop,
741 .pad_ib = si_dma_ring_pad_ib,
5b9263d9 742 .emit_wreg = si_dma_ring_emit_wreg,
30d1574f
KW		 743};
744
745static void si_dma_set_ring_funcs(struct amdgpu_device *adev)
746{
747 int i;
748
749 for (i = 0; i < adev->sdma.num_instances; i++)
750 adev->sdma.instance[i].ring.funcs = &si_dma_ring_funcs;
751}
752
753static const struct amdgpu_irq_src_funcs si_dma_trap_irq_funcs = {
754 .set = si_dma_set_trap_irq_state,
755 .process = si_dma_process_trap_irq,
756};
757
30d1574f
KW		 758static void si_dma_set_irq_funcs(struct amdgpu_device *adev)
759{
760 adev->sdma.trap_irq.num_types = AMDGPU_SDMA_IRQ_LAST;
761 adev->sdma.trap_irq.funcs = &si_dma_trap_irq_funcs;
30d1574f
KW		 762}
763
764/**
765 * si_dma_emit_copy_buffer - copy buffer using the sDMA engine
766 *
767 * @ring: amdgpu_ring structure holding ring information
768 * @src_offset: src GPU address
769 * @dst_offset: dst GPU address
770 * @byte_count: number of bytes to xfer
771 *
772 * Copy GPU buffers using the DMA engine (VI).
773 * Used by the amdgpu ttm implementation to move pages if
774 * registered as the asic copy callback.
775 */
776static void si_dma_emit_copy_buffer(struct amdgpu_ib *ib,
777 uint64_t src_offset,
778 uint64_t dst_offset,
779 uint32_t byte_count)
780{
781 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_COPY,
782 1, 0, 0, byte_count);
783 ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset);
784 ib->ptr[ib->length_dw++] = lower_32_bits(src_offset);
785 ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset) & 0xff;
786 ib->ptr[ib->length_dw++] = upper_32_bits(src_offset) & 0xff;
787}
788
789/**
790 * si_dma_emit_fill_buffer - fill buffer using the sDMA engine
791 *
792 * @ring: amdgpu_ring structure holding ring information
793 * @src_data: value to write to buffer
794 * @dst_offset: dst GPU address
795 * @byte_count: number of bytes to xfer
796 *
797 * Fill GPU buffers using the DMA engine (VI).
798 */
799static void si_dma_emit_fill_buffer(struct amdgpu_ib *ib,
800 uint32_t src_data,
801 uint64_t dst_offset,
802 uint32_t byte_count)
803{
804 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_CONSTANT_FILL,
805 0, 0, 0, byte_count / 4);
806 ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset);
807 ib->ptr[ib->length_dw++] = src_data;
808 ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset) << 16;
809}
810
811
812static const struct amdgpu_buffer_funcs si_dma_buffer_funcs = {
813 .copy_max_bytes = 0xffff8,
814 .copy_num_dw = 5,
815 .emit_copy_buffer = si_dma_emit_copy_buffer,
816
817 .fill_max_bytes = 0xffff8,
818 .fill_num_dw = 4,
819 .emit_fill_buffer = si_dma_emit_fill_buffer,
820};
821
822static void si_dma_set_buffer_funcs(struct amdgpu_device *adev)
823{
f54b30d7
CK		 824 adev->mman.buffer_funcs = &si_dma_buffer_funcs;
825 adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
30d1574f
KW		 826}
827
828static const struct amdgpu_vm_pte_funcs si_dma_vm_pte_funcs = {
e6d92197 829 .copy_pte_num_dw = 5,
30d1574f 830 .copy_pte = si_dma_vm_copy_pte,
e6d92197 831
30d1574f
KW		 832 .write_pte = si_dma_vm_write_pte,
833 .set_pte_pde = si_dma_vm_set_pte_pde,
834};
835
836static void si_dma_set_vm_pte_funcs(struct amdgpu_device *adev)
837{
838 unsigned i;
839
f54b30d7
CK		 840 adev->vm_manager.vm_pte_funcs = &si_dma_vm_pte_funcs;
841 for (i = 0; i < adev->sdma.num_instances; i++) {
0c88b430
ND		 842 adev->vm_manager.vm_pte_scheds[i] =
843 &adev->sdma.instance[i].ring.sched;
30d1574f 844 }
0c88b430 845 adev->vm_manager.vm_pte_num_scheds = adev->sdma.num_instances;
30d1574f 846}
a1255107
AD		 847
848const struct amdgpu_ip_block_version si_dma_ip_block =
849{
850 .type = AMD_IP_BLOCK_TYPE_SDMA,
851 .major = 1,
852 .minor = 0,
853 .rev = 0,
854 .funcs = &si_dma_ip_funcs,
855};
Linux 6.x block layer and io_uring tree(s)