1 /*
2  * Copyright 2018 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 <linux/firmware.h>
24 #include <linux/module.h>
25 #include <linux/vmalloc.h>
26 #include <drm/drm_drv.h>
27 
28 #include "amdgpu.h"
29 #include "amdgpu_psp.h"
30 #include "amdgpu_ras.h"
31 #include "amdgpu_ucode.h"
32 #include "soc15_common.h"
33 #include "psp_v11_0.h"
34 
35 #include "mp/mp_11_0_offset.h"
36 #include "mp/mp_11_0_sh_mask.h"
37 #include "gc/gc_9_0_offset.h"
38 #include "sdma0/sdma0_4_0_offset.h"
39 #include "nbio/nbio_7_4_offset.h"
40 
41 #include "oss/osssys_4_0_offset.h"
42 #include "oss/osssys_4_0_sh_mask.h"
43 
44 MODULE_FIRMWARE("amdgpu/vega20_sos.bin");
45 MODULE_FIRMWARE("amdgpu/vega20_asd.bin");
46 MODULE_FIRMWARE("amdgpu/vega20_ta.bin");
47 MODULE_FIRMWARE("amdgpu/navi10_sos.bin");
48 MODULE_FIRMWARE("amdgpu/navi10_asd.bin");
49 MODULE_FIRMWARE("amdgpu/navi10_ta.bin");
50 MODULE_FIRMWARE("amdgpu/navi14_sos.bin");
51 MODULE_FIRMWARE("amdgpu/navi14_asd.bin");
52 MODULE_FIRMWARE("amdgpu/navi14_ta.bin");
53 MODULE_FIRMWARE("amdgpu/navi12_sos.bin");
54 MODULE_FIRMWARE("amdgpu/navi12_asd.bin");
55 MODULE_FIRMWARE("amdgpu/navi12_ta.bin");
56 MODULE_FIRMWARE("amdgpu/arcturus_sos.bin");
57 MODULE_FIRMWARE("amdgpu/arcturus_asd.bin");
58 MODULE_FIRMWARE("amdgpu/arcturus_ta.bin");
59 MODULE_FIRMWARE("amdgpu/sienna_cichlid_sos.bin");
60 MODULE_FIRMWARE("amdgpu/sienna_cichlid_ta.bin");
61 MODULE_FIRMWARE("amdgpu/navy_flounder_sos.bin");
62 MODULE_FIRMWARE("amdgpu/navy_flounder_ta.bin");
63 MODULE_FIRMWARE("amdgpu/vangogh_asd.bin");
64 MODULE_FIRMWARE("amdgpu/vangogh_toc.bin");
65 MODULE_FIRMWARE("amdgpu/dimgrey_cavefish_sos.bin");
66 MODULE_FIRMWARE("amdgpu/dimgrey_cavefish_ta.bin");
67 MODULE_FIRMWARE("amdgpu/beige_goby_sos.bin");
68 MODULE_FIRMWARE("amdgpu/beige_goby_ta.bin");
69 
70 /* address block */
71 #define smnMP1_FIRMWARE_FLAGS		0x3010024
72 /* navi10 reg offset define */
73 #define mmRLC_GPM_UCODE_ADDR_NV10	0x5b61
74 #define mmRLC_GPM_UCODE_DATA_NV10	0x5b62
75 #define mmSDMA0_UCODE_ADDR_NV10		0x5880
76 #define mmSDMA0_UCODE_DATA_NV10		0x5881
77 /* memory training timeout define */
78 #define MEM_TRAIN_SEND_MSG_TIMEOUT_US	3000000
79 
80 /* For large FW files the time to complete can be very long */
81 #define USBC_PD_POLLING_LIMIT_S 240
82 
83 /* Read USB-PD from LFB */
84 #define GFX_CMD_USB_PD_USE_LFB 0x480
85 
86 static int psp_v11_0_init_microcode(struct psp_context *psp)
87 {
88 	struct amdgpu_device *adev = psp->adev;
89 	const char *chip_name;
90 	char fw_name[PSP_FW_NAME_LEN];
91 	int err = 0;
92 	const struct ta_firmware_header_v1_0 *ta_hdr;
93 
94 	DRM_DEBUG("\n");
95 
96 	switch (adev->ip_versions[MP0_HWIP][0]) {
97 	case IP_VERSION(11, 0, 2):
98 		chip_name = "vega20";
99 		break;
100 	case IP_VERSION(11, 0, 0):
101 		chip_name = "navi10";
102 		break;
103 	case IP_VERSION(11, 0, 5):
104 		chip_name = "navi14";
105 		break;
106 	case IP_VERSION(11, 0, 9):
107 		chip_name = "navi12";
108 		break;
109 	case IP_VERSION(11, 0, 4):
110 		chip_name = "arcturus";
111 		break;
112 	case IP_VERSION(11, 0, 7):
113 		chip_name = "sienna_cichlid";
114 		break;
115 	case IP_VERSION(11, 0, 11):
116 		chip_name = "navy_flounder";
117 		break;
118 	case IP_VERSION(11, 5, 0):
119 		chip_name = "vangogh";
120 		break;
121 	case IP_VERSION(11, 0, 12):
122 		chip_name = "dimgrey_cavefish";
123 		break;
124 	case IP_VERSION(11, 0, 13):
125 		chip_name = "beige_goby";
126 		break;
127 	default:
128 		BUG();
129 	}
130 
131 
132 	switch (adev->ip_versions[MP0_HWIP][0]) {
133 	case IP_VERSION(11, 0, 2):
134 	case IP_VERSION(11, 0, 4):
135 		err = psp_init_sos_microcode(psp, chip_name);
136 		if (err)
137 			return err;
138 		err = psp_init_asd_microcode(psp, chip_name);
139 		if (err)
140 			return err;
141 		snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_ta.bin", chip_name);
142 		err = request_firmware(&adev->psp.ta_fw, fw_name, adev->dev);
143 		if (err) {
144 			release_firmware(adev->psp.ta_fw);
145 			adev->psp.ta_fw = NULL;
146 			dev_info(adev->dev,
147 				 "psp v11.0: Failed to load firmware \"%s\"\n", fw_name);
148 		} else {
149 			err = amdgpu_ucode_validate(adev->psp.ta_fw);
150 			if (err)
151 				goto out2;
152 
153 			ta_hdr = (const struct ta_firmware_header_v1_0 *)adev->psp.ta_fw->data;
154 			adev->psp.xgmi_context.context.bin_desc.fw_version =
155 				le32_to_cpu(ta_hdr->xgmi.fw_version);
156 			adev->psp.xgmi_context.context.bin_desc.size_bytes =
157 				le32_to_cpu(ta_hdr->xgmi.size_bytes);
158 			adev->psp.xgmi_context.context.bin_desc.start_addr =
159 				(uint8_t *)ta_hdr +
160 				le32_to_cpu(ta_hdr->header.ucode_array_offset_bytes);
161 			adev->psp.ta_fw_version = le32_to_cpu(ta_hdr->header.ucode_version);
162 			adev->psp.ras_context.context.bin_desc.fw_version =
163 				le32_to_cpu(ta_hdr->ras.fw_version);
164 			adev->psp.ras_context.context.bin_desc.size_bytes =
165 				le32_to_cpu(ta_hdr->ras.size_bytes);
166 			adev->psp.ras_context.context.bin_desc.start_addr =
167 				(uint8_t *)adev->psp.xgmi_context.context.bin_desc.start_addr +
168 				le32_to_cpu(ta_hdr->ras.offset_bytes);
169 		}
170 		break;
171 	case IP_VERSION(11, 0, 0):
172 	case IP_VERSION(11, 0, 5):
173 	case IP_VERSION(11, 0, 9):
174 		err = psp_init_sos_microcode(psp, chip_name);
175 		if (err)
176 			return err;
177 		err = psp_init_asd_microcode(psp, chip_name);
178 		if (err)
179 			return err;
180 		if (amdgpu_sriov_vf(adev))
181 			break;
182 		snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_ta.bin", chip_name);
183 		err = request_firmware(&adev->psp.ta_fw, fw_name, adev->dev);
184 		if (err) {
185 			release_firmware(adev->psp.ta_fw);
186 			adev->psp.ta_fw = NULL;
187 			dev_info(adev->dev,
188 				 "psp v11.0: Failed to load firmware \"%s\"\n", fw_name);
189 		} else {
190 			err = amdgpu_ucode_validate(adev->psp.ta_fw);
191 			if (err)
192 				goto out2;
193 
194 			ta_hdr = (const struct ta_firmware_header_v1_0 *)adev->psp.ta_fw->data;
195 			adev->psp.hdcp_context.context.bin_desc.fw_version =
196 				le32_to_cpu(ta_hdr->hdcp.fw_version);
197 			adev->psp.hdcp_context.context.bin_desc.size_bytes =
198 				le32_to_cpu(ta_hdr->hdcp.size_bytes);
199 			adev->psp.hdcp_context.context.bin_desc.start_addr =
200 				(uint8_t *)ta_hdr +
201 				le32_to_cpu(
202 					ta_hdr->header.ucode_array_offset_bytes);
203 
204 			adev->psp.ta_fw_version = le32_to_cpu(ta_hdr->header.ucode_version);
205 
206 			adev->psp.dtm_context.context.bin_desc.fw_version =
207 				le32_to_cpu(ta_hdr->dtm.fw_version);
208 			adev->psp.dtm_context.context.bin_desc.size_bytes =
209 				le32_to_cpu(ta_hdr->dtm.size_bytes);
210 			adev->psp.dtm_context.context.bin_desc.start_addr =
211 				(uint8_t *)adev->psp.hdcp_context.context
212 					.bin_desc.start_addr +
213 				le32_to_cpu(ta_hdr->dtm.offset_bytes);
214 		}
215 		break;
216 	case IP_VERSION(11, 0, 7):
217 	case IP_VERSION(11, 0, 11):
218 	case IP_VERSION(11, 0, 12):
219 	case IP_VERSION(11, 0, 13):
220 		err = psp_init_sos_microcode(psp, chip_name);
221 		if (err)
222 			return err;
223 		err = psp_init_ta_microcode(psp, chip_name);
224 		if (err)
225 			return err;
226 		break;
227 	case IP_VERSION(11, 5, 0):
228 		err = psp_init_asd_microcode(psp, chip_name);
229 		if (err)
230 			return err;
231 		err = psp_init_toc_microcode(psp, chip_name);
232 		if (err)
233 			return err;
234 		break;
235 	default:
236 		BUG();
237 	}
238 
239 	return 0;
240 
241 out2:
242 	release_firmware(adev->psp.ta_fw);
243 	adev->psp.ta_fw = NULL;
244 	return err;
245 }
246 
247 static int psp_v11_0_wait_for_bootloader(struct psp_context *psp)
248 {
249 	struct amdgpu_device *adev = psp->adev;
250 
251 	int ret;
252 	int retry_loop;
253 
254 	for (retry_loop = 0; retry_loop < 10; retry_loop++) {
255 		/* Wait for bootloader to signify that is
256 		    ready having bit 31 of C2PMSG_35 set to 1 */
257 		ret = psp_wait_for(psp,
258 				   SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_35),
259 				   0x80000000,
260 				   0x80000000,
261 				   false);
262 
263 		if (ret == 0)
264 			return 0;
265 	}
266 
267 	return ret;
268 }
269 
270 static bool psp_v11_0_is_sos_alive(struct psp_context *psp)
271 {
272 	struct amdgpu_device *adev = psp->adev;
273 	uint32_t sol_reg;
274 
275 	sol_reg = RREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_81);
276 
277 	return sol_reg != 0x0;
278 }
279 
280 static int psp_v11_0_bootloader_load_component(struct psp_context  	*psp,
281 					       struct psp_bin_desc 	*bin_desc,
282 					       enum psp_bootloader_cmd  bl_cmd)
283 {
284 	int ret;
285 	uint32_t psp_gfxdrv_command_reg = 0;
286 	struct amdgpu_device *adev = psp->adev;
287 
288 	/* Check sOS sign of life register to confirm sys driver and sOS
289 	 * are already been loaded.
290 	 */
291 	if (psp_v11_0_is_sos_alive(psp))
292 		return 0;
293 
294 	ret = psp_v11_0_wait_for_bootloader(psp);
295 	if (ret)
296 		return ret;
297 
298 	/* Copy PSP System Driver binary to memory */
299 	psp_copy_fw(psp, bin_desc->start_addr, bin_desc->size_bytes);
300 
301 	/* Provide the sys driver to bootloader */
302 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_36,
303 	       (uint32_t)(psp->fw_pri_mc_addr >> 20));
304 	psp_gfxdrv_command_reg = bl_cmd;
305 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_35,
306 	       psp_gfxdrv_command_reg);
307 
308 	ret = psp_v11_0_wait_for_bootloader(psp);
309 
310 	return ret;
311 }
312 
313 static int psp_v11_0_bootloader_load_kdb(struct psp_context *psp)
314 {
315 	return psp_v11_0_bootloader_load_component(psp, &psp->kdb, PSP_BL__LOAD_KEY_DATABASE);
316 }
317 
318 static int psp_v11_0_bootloader_load_spl(struct psp_context *psp)
319 {
320 	return psp_v11_0_bootloader_load_component(psp, &psp->spl, PSP_BL__LOAD_TOS_SPL_TABLE);
321 }
322 
323 static int psp_v11_0_bootloader_load_sysdrv(struct psp_context *psp)
324 {
325 	return psp_v11_0_bootloader_load_component(psp, &psp->sys, PSP_BL__LOAD_SYSDRV);
326 }
327 
328 static int psp_v11_0_bootloader_load_sos(struct psp_context *psp)
329 {
330 	int ret;
331 	unsigned int psp_gfxdrv_command_reg = 0;
332 	struct amdgpu_device *adev = psp->adev;
333 
334 	/* Check sOS sign of life register to confirm sys driver and sOS
335 	 * are already been loaded.
336 	 */
337 	if (psp_v11_0_is_sos_alive(psp))
338 		return 0;
339 
340 	ret = psp_v11_0_wait_for_bootloader(psp);
341 	if (ret)
342 		return ret;
343 
344 	/* Copy Secure OS binary to PSP memory */
345 	psp_copy_fw(psp, psp->sos.start_addr, psp->sos.size_bytes);
346 
347 	/* Provide the PSP secure OS to bootloader */
348 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_36,
349 	       (uint32_t)(psp->fw_pri_mc_addr >> 20));
350 	psp_gfxdrv_command_reg = PSP_BL__LOAD_SOSDRV;
351 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_35,
352 	       psp_gfxdrv_command_reg);
353 
354 	/* there might be handshake issue with hardware which needs delay */
355 	mdelay(20);
356 	ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_81),
357 			   RREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_81),
358 			   0, true);
359 
360 	return ret;
361 }
362 
363 static int psp_v11_0_ring_init(struct psp_context *psp,
364 			      enum psp_ring_type ring_type)
365 {
366 	int ret = 0;
367 	struct psp_ring *ring;
368 	struct amdgpu_device *adev = psp->adev;
369 
370 	ring = &psp->km_ring;
371 
372 	ring->ring_type = ring_type;
373 
374 	/* allocate 4k Page of Local Frame Buffer memory for ring */
375 	ring->ring_size = 0x1000;
376 	ret = amdgpu_bo_create_kernel(adev, ring->ring_size, PAGE_SIZE,
377 				      AMDGPU_GEM_DOMAIN_VRAM,
378 				      &adev->firmware.rbuf,
379 				      &ring->ring_mem_mc_addr,
380 				      (void **)&ring->ring_mem);
381 	if (ret) {
382 		ring->ring_size = 0;
383 		return ret;
384 	}
385 
386 	return 0;
387 }
388 
389 static int psp_v11_0_ring_stop(struct psp_context *psp,
390 			      enum psp_ring_type ring_type)
391 {
392 	int ret = 0;
393 	struct amdgpu_device *adev = psp->adev;
394 
395 	/* Write the ring destroy command*/
396 	if (amdgpu_sriov_vf(adev))
397 		WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_101,
398 				     GFX_CTRL_CMD_ID_DESTROY_GPCOM_RING);
399 	else
400 		WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_64,
401 				     GFX_CTRL_CMD_ID_DESTROY_RINGS);
402 
403 	/* there might be handshake issue with hardware which needs delay */
404 	mdelay(20);
405 
406 	/* Wait for response flag (bit 31) */
407 	if (amdgpu_sriov_vf(adev))
408 		ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_101),
409 				   0x80000000, 0x80000000, false);
410 	else
411 		ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_64),
412 				   0x80000000, 0x80000000, false);
413 
414 	return ret;
415 }
416 
417 static int psp_v11_0_ring_create(struct psp_context *psp,
418 				enum psp_ring_type ring_type)
419 {
420 	int ret = 0;
421 	unsigned int psp_ring_reg = 0;
422 	struct psp_ring *ring = &psp->km_ring;
423 	struct amdgpu_device *adev = psp->adev;
424 
425 	if (amdgpu_sriov_vf(adev)) {
426 		ring->ring_wptr = 0;
427 		ret = psp_v11_0_ring_stop(psp, ring_type);
428 		if (ret) {
429 			DRM_ERROR("psp_v11_0_ring_stop_sriov failed!\n");
430 			return ret;
431 		}
432 
433 		/* Write low address of the ring to C2PMSG_102 */
434 		psp_ring_reg = lower_32_bits(ring->ring_mem_mc_addr);
435 		WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_102, psp_ring_reg);
436 		/* Write high address of the ring to C2PMSG_103 */
437 		psp_ring_reg = upper_32_bits(ring->ring_mem_mc_addr);
438 		WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_103, psp_ring_reg);
439 
440 		/* Write the ring initialization command to C2PMSG_101 */
441 		WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_101,
442 					     GFX_CTRL_CMD_ID_INIT_GPCOM_RING);
443 
444 		/* there might be handshake issue with hardware which needs delay */
445 		mdelay(20);
446 
447 		/* Wait for response flag (bit 31) in C2PMSG_101 */
448 		ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_101),
449 				   0x80000000, 0x8000FFFF, false);
450 
451 	} else {
452 		/* Wait for sOS ready for ring creation */
453 		ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_64),
454 				   0x80000000, 0x80000000, false);
455 		if (ret) {
456 			DRM_ERROR("Failed to wait for sOS ready for ring creation\n");
457 			return ret;
458 		}
459 
460 		/* Write low address of the ring to C2PMSG_69 */
461 		psp_ring_reg = lower_32_bits(ring->ring_mem_mc_addr);
462 		WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_69, psp_ring_reg);
463 		/* Write high address of the ring to C2PMSG_70 */
464 		psp_ring_reg = upper_32_bits(ring->ring_mem_mc_addr);
465 		WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_70, psp_ring_reg);
466 		/* Write size of ring to C2PMSG_71 */
467 		psp_ring_reg = ring->ring_size;
468 		WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_71, psp_ring_reg);
469 		/* Write the ring initialization command to C2PMSG_64 */
470 		psp_ring_reg = ring_type;
471 		psp_ring_reg = psp_ring_reg << 16;
472 		WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_64, psp_ring_reg);
473 
474 		/* there might be handshake issue with hardware which needs delay */
475 		mdelay(20);
476 
477 		/* Wait for response flag (bit 31) in C2PMSG_64 */
478 		ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_64),
479 				   0x80000000, 0x8000FFFF, false);
480 	}
481 
482 	return ret;
483 }
484 
485 
486 static int psp_v11_0_ring_destroy(struct psp_context *psp,
487 				 enum psp_ring_type ring_type)
488 {
489 	int ret = 0;
490 	struct psp_ring *ring = &psp->km_ring;
491 	struct amdgpu_device *adev = psp->adev;
492 
493 	ret = psp_v11_0_ring_stop(psp, ring_type);
494 	if (ret)
495 		DRM_ERROR("Fail to stop psp ring\n");
496 
497 	amdgpu_bo_free_kernel(&adev->firmware.rbuf,
498 			      &ring->ring_mem_mc_addr,
499 			      (void **)&ring->ring_mem);
500 
501 	return ret;
502 }
503 
504 static int psp_v11_0_mode1_reset(struct psp_context *psp)
505 {
506 	int ret;
507 	uint32_t offset;
508 	struct amdgpu_device *adev = psp->adev;
509 
510 	offset = SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_64);
511 
512 	ret = psp_wait_for(psp, offset, 0x80000000, 0x8000FFFF, false);
513 
514 	if (ret) {
515 		DRM_INFO("psp is not working correctly before mode1 reset!\n");
516 		return -EINVAL;
517 	}
518 
519 	/*send the mode 1 reset command*/
520 	WREG32(offset, GFX_CTRL_CMD_ID_MODE1_RST);
521 
522 	msleep(500);
523 
524 	offset = SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_33);
525 
526 	ret = psp_wait_for(psp, offset, 0x80000000, 0x80000000, false);
527 
528 	if (ret) {
529 		DRM_INFO("psp mode 1 reset failed!\n");
530 		return -EINVAL;
531 	}
532 
533 	DRM_INFO("psp mode1 reset succeed \n");
534 
535 	return 0;
536 }
537 
538 static int psp_v11_0_memory_training_send_msg(struct psp_context *psp, int msg)
539 {
540 	int ret;
541 	int i;
542 	uint32_t data_32;
543 	int max_wait;
544 	struct amdgpu_device *adev = psp->adev;
545 
546 	data_32 = (psp->mem_train_ctx.c2p_train_data_offset >> 20);
547 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_36, data_32);
548 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_35, msg);
549 
550 	max_wait = MEM_TRAIN_SEND_MSG_TIMEOUT_US / adev->usec_timeout;
551 	for (i = 0; i < max_wait; i++) {
552 		ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_35),
553 				   0x80000000, 0x80000000, false);
554 		if (ret == 0)
555 			break;
556 	}
557 	if (i < max_wait)
558 		ret = 0;
559 	else
560 		ret = -ETIME;
561 
562 	DRM_DEBUG("training %s %s, cost %d @ %d ms\n",
563 		  (msg == PSP_BL__DRAM_SHORT_TRAIN) ? "short" : "long",
564 		  (ret == 0) ? "succeed" : "failed",
565 		  i, adev->usec_timeout/1000);
566 	return ret;
567 }
568 
569 /*
570  * save and restore process
571  */
572 static int psp_v11_0_memory_training(struct psp_context *psp, uint32_t ops)
573 {
574 	struct psp_memory_training_context *ctx = &psp->mem_train_ctx;
575 	uint32_t *pcache = (uint32_t *)ctx->sys_cache;
576 	struct amdgpu_device *adev = psp->adev;
577 	uint32_t p2c_header[4];
578 	uint32_t sz;
579 	void *buf;
580 	int ret, idx;
581 
582 	if (ctx->init == PSP_MEM_TRAIN_NOT_SUPPORT) {
583 		DRM_DEBUG("Memory training is not supported.\n");
584 		return 0;
585 	} else if (ctx->init != PSP_MEM_TRAIN_INIT_SUCCESS) {
586 		DRM_ERROR("Memory training initialization failure.\n");
587 		return -EINVAL;
588 	}
589 
590 	if (psp_v11_0_is_sos_alive(psp)) {
591 		DRM_DEBUG("SOS is alive, skip memory training.\n");
592 		return 0;
593 	}
594 
595 	amdgpu_device_vram_access(adev, ctx->p2c_train_data_offset, p2c_header, sizeof(p2c_header), false);
596 	DRM_DEBUG("sys_cache[%08x,%08x,%08x,%08x] p2c_header[%08x,%08x,%08x,%08x]\n",
597 		  pcache[0], pcache[1], pcache[2], pcache[3],
598 		  p2c_header[0], p2c_header[1], p2c_header[2], p2c_header[3]);
599 
600 	if (ops & PSP_MEM_TRAIN_SEND_SHORT_MSG) {
601 		DRM_DEBUG("Short training depends on restore.\n");
602 		ops |= PSP_MEM_TRAIN_RESTORE;
603 	}
604 
605 	if ((ops & PSP_MEM_TRAIN_RESTORE) &&
606 	    pcache[0] != MEM_TRAIN_SYSTEM_SIGNATURE) {
607 		DRM_DEBUG("sys_cache[0] is invalid, restore depends on save.\n");
608 		ops |= PSP_MEM_TRAIN_SAVE;
609 	}
610 
611 	if (p2c_header[0] == MEM_TRAIN_SYSTEM_SIGNATURE &&
612 	    !(pcache[0] == MEM_TRAIN_SYSTEM_SIGNATURE &&
613 	      pcache[3] == p2c_header[3])) {
614 		DRM_DEBUG("sys_cache is invalid or out-of-date, need save training data to sys_cache.\n");
615 		ops |= PSP_MEM_TRAIN_SAVE;
616 	}
617 
618 	if ((ops & PSP_MEM_TRAIN_SAVE) &&
619 	    p2c_header[0] != MEM_TRAIN_SYSTEM_SIGNATURE) {
620 		DRM_DEBUG("p2c_header[0] is invalid, save depends on long training.\n");
621 		ops |= PSP_MEM_TRAIN_SEND_LONG_MSG;
622 	}
623 
624 	if (ops & PSP_MEM_TRAIN_SEND_LONG_MSG) {
625 		ops &= ~PSP_MEM_TRAIN_SEND_SHORT_MSG;
626 		ops |= PSP_MEM_TRAIN_SAVE;
627 	}
628 
629 	DRM_DEBUG("Memory training ops:%x.\n", ops);
630 
631 	if (ops & PSP_MEM_TRAIN_SEND_LONG_MSG) {
632 		/*
633 		 * Long training will encroach a certain amount on the bottom of VRAM;
634 		 * save the content from the bottom of VRAM to system memory
635 		 * before training, and restore it after training to avoid
636 		 * VRAM corruption.
637 		 */
638 		sz = GDDR6_MEM_TRAINING_ENCROACHED_SIZE;
639 
640 		if (adev->gmc.visible_vram_size < sz || !adev->mman.aper_base_kaddr) {
641 			DRM_ERROR("visible_vram_size %llx or aper_base_kaddr %p is not initialized.\n",
642 				  adev->gmc.visible_vram_size,
643 				  adev->mman.aper_base_kaddr);
644 			return -EINVAL;
645 		}
646 
647 		buf = vmalloc(sz);
648 		if (!buf) {
649 			DRM_ERROR("failed to allocate system memory.\n");
650 			return -ENOMEM;
651 		}
652 
653 		if (drm_dev_enter(adev_to_drm(adev), &idx)) {
654 			memcpy_fromio(buf, adev->mman.aper_base_kaddr, sz);
655 			ret = psp_v11_0_memory_training_send_msg(psp, PSP_BL__DRAM_LONG_TRAIN);
656 			if (ret) {
657 				DRM_ERROR("Send long training msg failed.\n");
658 				vfree(buf);
659 				drm_dev_exit(idx);
660 				return ret;
661 			}
662 
663 			memcpy_toio(adev->mman.aper_base_kaddr, buf, sz);
664 			adev->hdp.funcs->flush_hdp(adev, NULL);
665 			vfree(buf);
666 			drm_dev_exit(idx);
667 		} else {
668 			vfree(buf);
669 			return -ENODEV;
670 		}
671 	}
672 
673 	if (ops & PSP_MEM_TRAIN_SAVE) {
674 		amdgpu_device_vram_access(psp->adev, ctx->p2c_train_data_offset, ctx->sys_cache, ctx->train_data_size, false);
675 	}
676 
677 	if (ops & PSP_MEM_TRAIN_RESTORE) {
678 		amdgpu_device_vram_access(psp->adev, ctx->c2p_train_data_offset, ctx->sys_cache, ctx->train_data_size, true);
679 	}
680 
681 	if (ops & PSP_MEM_TRAIN_SEND_SHORT_MSG) {
682 		ret = psp_v11_0_memory_training_send_msg(psp, (amdgpu_force_long_training > 0) ?
683 							 PSP_BL__DRAM_LONG_TRAIN : PSP_BL__DRAM_SHORT_TRAIN);
684 		if (ret) {
685 			DRM_ERROR("send training msg failed.\n");
686 			return ret;
687 		}
688 	}
689 	ctx->training_cnt++;
690 	return 0;
691 }
692 
693 static uint32_t psp_v11_0_ring_get_wptr(struct psp_context *psp)
694 {
695 	uint32_t data;
696 	struct amdgpu_device *adev = psp->adev;
697 
698 	if (amdgpu_sriov_vf(adev))
699 		data = psp->km_ring.ring_wptr;
700 	else
701 		data = RREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_67);
702 
703 	return data;
704 }
705 
706 static void psp_v11_0_ring_set_wptr(struct psp_context *psp, uint32_t value)
707 {
708 	struct amdgpu_device *adev = psp->adev;
709 
710 	if (amdgpu_sriov_vf(adev)) {
711 		WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_102, value);
712 		WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_101, GFX_CTRL_CMD_ID_CONSUME_CMD);
713 		psp->km_ring.ring_wptr = value;
714 	} else
715 		WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_67, value);
716 }
717 
718 static int psp_v11_0_load_usbc_pd_fw(struct psp_context *psp, uint64_t fw_pri_mc_addr)
719 {
720 	struct amdgpu_device *adev = psp->adev;
721 	uint32_t reg_status;
722 	int ret, i = 0;
723 
724 	/*
725 	 * LFB address which is aligned to 1MB address and has to be
726 	 * right-shifted by 20 so that LFB address can be passed on a 32-bit C2P
727 	 * register
728 	 */
729 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_36, (fw_pri_mc_addr >> 20));
730 
731 	ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_35),
732 			     0x80000000, 0x80000000, false);
733 	if (ret)
734 		return ret;
735 
736 	/* Fireup interrupt so PSP can pick up the address */
737 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_35, (GFX_CMD_USB_PD_USE_LFB << 16));
738 
739 	/* FW load takes very long time */
740 	do {
741 		msleep(1000);
742 		reg_status = RREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_35);
743 
744 		if (reg_status & 0x80000000)
745 			goto done;
746 
747 	} while (++i < USBC_PD_POLLING_LIMIT_S);
748 
749 	return -ETIME;
750 done:
751 
752 	if ((reg_status & 0xFFFF) != 0) {
753 		DRM_ERROR("Address load failed - MP0_SMN_C2PMSG_35.Bits [15:0] = 0x%04x\n",
754 				reg_status & 0xFFFF);
755 		return -EIO;
756 	}
757 
758 	return 0;
759 }
760 
761 static int psp_v11_0_read_usbc_pd_fw(struct psp_context *psp, uint32_t *fw_ver)
762 {
763 	struct amdgpu_device *adev = psp->adev;
764 	int ret;
765 
766 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_35, C2PMSG_CMD_GFX_USB_PD_FW_VER);
767 
768 	ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_35),
769 				     0x80000000, 0x80000000, false);
770 	if (!ret)
771 		*fw_ver = RREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_36);
772 
773 	return ret;
774 }
775 
776 static const struct psp_funcs psp_v11_0_funcs = {
777 	.init_microcode = psp_v11_0_init_microcode,
778 	.bootloader_load_kdb = psp_v11_0_bootloader_load_kdb,
779 	.bootloader_load_spl = psp_v11_0_bootloader_load_spl,
780 	.bootloader_load_sysdrv = psp_v11_0_bootloader_load_sysdrv,
781 	.bootloader_load_sos = psp_v11_0_bootloader_load_sos,
782 	.ring_init = psp_v11_0_ring_init,
783 	.ring_create = psp_v11_0_ring_create,
784 	.ring_stop = psp_v11_0_ring_stop,
785 	.ring_destroy = psp_v11_0_ring_destroy,
786 	.mode1_reset = psp_v11_0_mode1_reset,
787 	.mem_training = psp_v11_0_memory_training,
788 	.ring_get_wptr = psp_v11_0_ring_get_wptr,
789 	.ring_set_wptr = psp_v11_0_ring_set_wptr,
790 	.load_usbc_pd_fw = psp_v11_0_load_usbc_pd_fw,
791 	.read_usbc_pd_fw = psp_v11_0_read_usbc_pd_fw
792 };
793 
794 void psp_v11_0_set_psp_funcs(struct psp_context *psp)
795 {
796 	psp->funcs = &psp_v11_0_funcs;
797 }
798