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 "amdgpu.h"
24 #include "amdgpu_atombios.h"
25 #include "nbio_v7_4.h"
26 #include "amdgpu_ras.h"
27 
28 #include "nbio/nbio_7_4_offset.h"
29 #include "nbio/nbio_7_4_sh_mask.h"
30 #include "nbio/nbio_7_4_0_smn.h"
31 #include "ivsrcid/nbio/irqsrcs_nbif_7_4.h"
32 #include <uapi/linux/kfd_ioctl.h>
33 
34 #define smnPCIE_LC_CNTL		0x11140280
35 #define smnPCIE_LC_CNTL3	0x111402d4
36 #define smnPCIE_LC_CNTL6	0x111402ec
37 #define smnPCIE_LC_CNTL7	0x111402f0
38 #define smnNBIF_MGCG_CTRL_LCLK	0x1013a21c
39 #define smnRCC_BIF_STRAP3	0x1012348c
40 #define RCC_BIF_STRAP3__STRAP_VLINK_ASPM_IDLE_TIMER_MASK	0x0000FFFFL
41 #define RCC_BIF_STRAP3__STRAP_VLINK_PM_L1_ENTRY_TIMER_MASK	0xFFFF0000L
42 #define smnRCC_BIF_STRAP5	0x10123494
43 #define RCC_BIF_STRAP5__STRAP_VLINK_LDN_ENTRY_TIMER_MASK	0x0000FFFFL
44 #define smnBIF_CFG_DEV0_EPF0_DEVICE_CNTL2	0x1014008c
45 #define BIF_CFG_DEV0_EPF0_DEVICE_CNTL2__LTR_EN_MASK			0x0400L
46 #define smnBIF_CFG_DEV0_EPF0_PCIE_LTR_CAP	0x10140324
47 #define smnPSWUSP0_PCIE_LC_CNTL2		0x111402c4
48 #define smnRCC_EP_DEV0_0_EP_PCIE_TX_LTR_CNTL	0x10123538
49 #define smnRCC_BIF_STRAP2	0x10123488
50 #define RCC_BIF_STRAP2__STRAP_LTR_IN_ASPML1_DIS_MASK	0x00004000L
51 #define RCC_BIF_STRAP3__STRAP_VLINK_ASPM_IDLE_TIMER__SHIFT	0x0
52 #define RCC_BIF_STRAP3__STRAP_VLINK_PM_L1_ENTRY_TIMER__SHIFT	0x10
53 #define RCC_BIF_STRAP5__STRAP_VLINK_LDN_ENTRY_TIMER__SHIFT	0x0
54 
55 /*
56  * These are nbio v7_4_1 registers mask. Temporarily define these here since
57  * nbio v7_4_1 header is incomplete.
58  */
59 #define GPU_HDP_FLUSH_DONE__RSVD_ENG0_MASK	0x00001000L /* Don't use.  Firmware uses this bit internally */
60 #define GPU_HDP_FLUSH_DONE__RSVD_ENG1_MASK	0x00002000L
61 #define GPU_HDP_FLUSH_DONE__RSVD_ENG2_MASK	0x00004000L
62 #define GPU_HDP_FLUSH_DONE__RSVD_ENG3_MASK	0x00008000L
63 #define GPU_HDP_FLUSH_DONE__RSVD_ENG4_MASK	0x00010000L
64 #define GPU_HDP_FLUSH_DONE__RSVD_ENG5_MASK	0x00020000L
65 #define GPU_HDP_FLUSH_DONE__RSVD_ENG6_MASK	0x00040000L
66 #define GPU_HDP_FLUSH_DONE__RSVD_ENG7_MASK	0x00080000L
67 #define GPU_HDP_FLUSH_DONE__RSVD_ENG8_MASK	0x00100000L
68 
69 #define mmBIF_MMSCH1_DOORBELL_RANGE                     0x01dc
70 #define mmBIF_MMSCH1_DOORBELL_RANGE_BASE_IDX            2
71 //BIF_MMSCH1_DOORBELL_RANGE
72 #define BIF_MMSCH1_DOORBELL_RANGE__OFFSET__SHIFT        0x2
73 #define BIF_MMSCH1_DOORBELL_RANGE__SIZE__SHIFT          0x10
74 #define BIF_MMSCH1_DOORBELL_RANGE__OFFSET_MASK          0x00000FFCL
75 #define BIF_MMSCH1_DOORBELL_RANGE__SIZE_MASK            0x001F0000L
76 
77 #define BIF_MMSCH1_DOORBELL_RANGE__OFFSET_MASK          0x00000FFCL
78 #define BIF_MMSCH1_DOORBELL_RANGE__SIZE_MASK            0x001F0000L
79 
80 #define mmBIF_MMSCH1_DOORBELL_RANGE_ALDE                0x01d8
81 #define mmBIF_MMSCH1_DOORBELL_RANGE_ALDE_BASE_IDX       2
82 //BIF_MMSCH1_DOORBELL_ALDE_RANGE
83 #define BIF_MMSCH1_DOORBELL_RANGE_ALDE__OFFSET__SHIFT   0x2
84 #define BIF_MMSCH1_DOORBELL_RANGE_ALDE__SIZE__SHIFT     0x10
85 #define BIF_MMSCH1_DOORBELL_RANGE_ALDE__OFFSET_MASK     0x00000FFCL
86 #define BIF_MMSCH1_DOORBELL_RANGE_ALDE__SIZE_MASK       0x001F0000L
87 
88 #define mmRCC_DEV0_EPF0_STRAP0_ALDE			0x0015
89 #define mmRCC_DEV0_EPF0_STRAP0_ALDE_BASE_IDX		2
90 
91 #define mmBIF_DOORBELL_INT_CNTL_ALDE 			0x00fe
92 #define mmBIF_DOORBELL_INT_CNTL_ALDE_BASE_IDX 		2
93 #define BIF_DOORBELL_INT_CNTL_ALDE__DOORBELL_INTERRUPT_DISABLE__SHIFT	0x18
94 #define BIF_DOORBELL_INT_CNTL_ALDE__DOORBELL_INTERRUPT_DISABLE_MASK	0x01000000L
95 
96 #define mmBIF_INTR_CNTL_ALDE 				0x0101
97 #define mmBIF_INTR_CNTL_ALDE_BASE_IDX 			2
98 
99 static void nbio_v7_4_query_ras_error_count(struct amdgpu_device *adev,
100 					void *ras_error_status);
101 
102 static void nbio_v7_4_remap_hdp_registers(struct amdgpu_device *adev)
103 {
104 	WREG32_SOC15(NBIO, 0, mmREMAP_HDP_MEM_FLUSH_CNTL,
105 		adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL);
106 	WREG32_SOC15(NBIO, 0, mmREMAP_HDP_REG_FLUSH_CNTL,
107 		adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_REG_FLUSH_CNTL);
108 }
109 
110 static u32 nbio_v7_4_get_rev_id(struct amdgpu_device *adev)
111 {
112 	u32 tmp;
113 
114 	if (adev->asic_type == CHIP_ALDEBARAN)
115 		tmp = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_STRAP0_ALDE);
116 	else
117 		tmp = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_STRAP0);
118 
119 	tmp &= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0_MASK;
120 	tmp >>= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0__SHIFT;
121 
122 	return tmp;
123 }
124 
125 static void nbio_v7_4_mc_access_enable(struct amdgpu_device *adev, bool enable)
126 {
127 	if (enable)
128 		WREG32_SOC15(NBIO, 0, mmBIF_FB_EN,
129 			BIF_FB_EN__FB_READ_EN_MASK | BIF_FB_EN__FB_WRITE_EN_MASK);
130 	else
131 		WREG32_SOC15(NBIO, 0, mmBIF_FB_EN, 0);
132 }
133 
134 static u32 nbio_v7_4_get_memsize(struct amdgpu_device *adev)
135 {
136 	return RREG32_SOC15(NBIO, 0, mmRCC_CONFIG_MEMSIZE);
137 }
138 
139 static void nbio_v7_4_sdma_doorbell_range(struct amdgpu_device *adev, int instance,
140 			bool use_doorbell, int doorbell_index, int doorbell_size)
141 {
142 	u32 reg, doorbell_range;
143 
144 	if (instance < 2) {
145 		reg = instance +
146 			SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA0_DOORBELL_RANGE);
147 	} else {
148 		/*
149 		 * These registers address of SDMA2~7 is not consecutive
150 		 * from SDMA0~1. Need plus 4 dwords offset.
151 		 *
152 		 *   BIF_SDMA0_DOORBELL_RANGE:  0x3bc0
153 		 *   BIF_SDMA1_DOORBELL_RANGE:  0x3bc4
154 		 *   BIF_SDMA2_DOORBELL_RANGE:  0x3bd8
155 +		 *   BIF_SDMA4_DOORBELL_RANGE:
156 +		 *     ARCTURUS:  0x3be0
157 +		 *     ALDEBARAN: 0x3be4
158 		 */
159 		if (adev->asic_type == CHIP_ALDEBARAN && instance == 4)
160 			reg = instance + 0x4 + 0x1 +
161 				SOC15_REG_OFFSET(NBIO, 0,
162 						 mmBIF_SDMA0_DOORBELL_RANGE);
163 		else
164 			reg = instance + 0x4 +
165 				SOC15_REG_OFFSET(NBIO, 0,
166 						 mmBIF_SDMA0_DOORBELL_RANGE);
167 	}
168 
169 	doorbell_range = RREG32(reg);
170 
171 	if (use_doorbell) {
172 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, OFFSET, doorbell_index);
173 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, doorbell_size);
174 	} else
175 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 0);
176 
177 	WREG32(reg, doorbell_range);
178 }
179 
180 static void nbio_v7_4_vcn_doorbell_range(struct amdgpu_device *adev, bool use_doorbell,
181 					 int doorbell_index, int instance)
182 {
183 	u32 reg;
184 	u32 doorbell_range;
185 
186 	if (instance) {
187 		if (adev->asic_type == CHIP_ALDEBARAN)
188 			reg = SOC15_REG_OFFSET(NBIO, 0, mmBIF_MMSCH1_DOORBELL_RANGE_ALDE);
189 		else
190 			reg = SOC15_REG_OFFSET(NBIO, 0, mmBIF_MMSCH1_DOORBELL_RANGE);
191 	} else
192 		reg = SOC15_REG_OFFSET(NBIO, 0, mmBIF_MMSCH0_DOORBELL_RANGE);
193 
194 	doorbell_range = RREG32(reg);
195 
196 	if (use_doorbell) {
197 		doorbell_range = REG_SET_FIELD(doorbell_range,
198 					       BIF_MMSCH0_DOORBELL_RANGE, OFFSET,
199 					       doorbell_index);
200 		doorbell_range = REG_SET_FIELD(doorbell_range,
201 					       BIF_MMSCH0_DOORBELL_RANGE, SIZE, 8);
202 	} else
203 		doorbell_range = REG_SET_FIELD(doorbell_range,
204 					       BIF_MMSCH0_DOORBELL_RANGE, SIZE, 0);
205 
206 	WREG32(reg, doorbell_range);
207 }
208 
209 static void nbio_v7_4_enable_doorbell_aperture(struct amdgpu_device *adev,
210 					       bool enable)
211 {
212 	WREG32_FIELD15(NBIO, 0, RCC_DOORBELL_APER_EN, BIF_DOORBELL_APER_EN, enable ? 1 : 0);
213 }
214 
215 static void nbio_v7_4_enable_doorbell_selfring_aperture(struct amdgpu_device *adev,
216 							bool enable)
217 {
218 	u32 tmp = 0;
219 
220 	if (enable) {
221 		tmp = REG_SET_FIELD(tmp, DOORBELL_SELFRING_GPA_APER_CNTL, DOORBELL_SELFRING_GPA_APER_EN, 1) |
222 		      REG_SET_FIELD(tmp, DOORBELL_SELFRING_GPA_APER_CNTL, DOORBELL_SELFRING_GPA_APER_MODE, 1) |
223 		      REG_SET_FIELD(tmp, DOORBELL_SELFRING_GPA_APER_CNTL, DOORBELL_SELFRING_GPA_APER_SIZE, 0);
224 
225 		WREG32_SOC15(NBIO, 0, mmDOORBELL_SELFRING_GPA_APER_BASE_LOW,
226 			     lower_32_bits(adev->doorbell.base));
227 		WREG32_SOC15(NBIO, 0, mmDOORBELL_SELFRING_GPA_APER_BASE_HIGH,
228 			     upper_32_bits(adev->doorbell.base));
229 	}
230 
231 	WREG32_SOC15(NBIO, 0, mmDOORBELL_SELFRING_GPA_APER_CNTL, tmp);
232 }
233 
234 static void nbio_v7_4_ih_doorbell_range(struct amdgpu_device *adev,
235 					bool use_doorbell, int doorbell_index)
236 {
237 	u32 ih_doorbell_range = RREG32_SOC15(NBIO, 0 , mmBIF_IH_DOORBELL_RANGE);
238 
239 	if (use_doorbell) {
240 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, OFFSET, doorbell_index);
241 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 4);
242 	} else
243 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 0);
244 
245 	WREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE, ih_doorbell_range);
246 }
247 
248 
249 static void nbio_v7_4_update_medium_grain_clock_gating(struct amdgpu_device *adev,
250 						       bool enable)
251 {
252 	//TODO: Add support for v7.4
253 }
254 
255 static void nbio_v7_4_update_medium_grain_light_sleep(struct amdgpu_device *adev,
256 						      bool enable)
257 {
258 	uint32_t def, data;
259 
260 	def = data = RREG32_PCIE(smnPCIE_CNTL2);
261 	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_LS)) {
262 		data |= (PCIE_CNTL2__SLV_MEM_LS_EN_MASK |
263 			 PCIE_CNTL2__MST_MEM_LS_EN_MASK |
264 			 PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK);
265 	} else {
266 		data &= ~(PCIE_CNTL2__SLV_MEM_LS_EN_MASK |
267 			  PCIE_CNTL2__MST_MEM_LS_EN_MASK |
268 			  PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK);
269 	}
270 
271 	if (def != data)
272 		WREG32_PCIE(smnPCIE_CNTL2, data);
273 }
274 
275 static void nbio_v7_4_get_clockgating_state(struct amdgpu_device *adev,
276 					    u64 *flags)
277 {
278 	int data;
279 
280 	/* AMD_CG_SUPPORT_BIF_MGCG */
281 	data = RREG32_PCIE(smnCPM_CONTROL);
282 	if (data & CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK)
283 		*flags |= AMD_CG_SUPPORT_BIF_MGCG;
284 
285 	/* AMD_CG_SUPPORT_BIF_LS */
286 	data = RREG32_PCIE(smnPCIE_CNTL2);
287 	if (data & PCIE_CNTL2__SLV_MEM_LS_EN_MASK)
288 		*flags |= AMD_CG_SUPPORT_BIF_LS;
289 }
290 
291 static void nbio_v7_4_ih_control(struct amdgpu_device *adev)
292 {
293 	u32 interrupt_cntl;
294 
295 	/* setup interrupt control */
296 	WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL2, adev->dummy_page_addr >> 8);
297 	interrupt_cntl = RREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL);
298 	/* INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=0 - dummy read disabled with msi, enabled without msi
299 	 * INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=1 - dummy read controlled by IH_DUMMY_RD_EN
300 	 */
301 	interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_DUMMY_RD_OVERRIDE, 0);
302 	/* INTERRUPT_CNTL__IH_REQ_NONSNOOP_EN_MASK=1 if ring is in non-cacheable memory, e.g., vram */
303 	interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_REQ_NONSNOOP_EN, 0);
304 	WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL, interrupt_cntl);
305 }
306 
307 static u32 nbio_v7_4_get_hdp_flush_req_offset(struct amdgpu_device *adev)
308 {
309 	return SOC15_REG_OFFSET(NBIO, 0, mmGPU_HDP_FLUSH_REQ);
310 }
311 
312 static u32 nbio_v7_4_get_hdp_flush_done_offset(struct amdgpu_device *adev)
313 {
314 	return SOC15_REG_OFFSET(NBIO, 0, mmGPU_HDP_FLUSH_DONE);
315 }
316 
317 static u32 nbio_v7_4_get_pcie_index_offset(struct amdgpu_device *adev)
318 {
319 	return SOC15_REG_OFFSET(NBIO, 0, mmPCIE_INDEX2);
320 }
321 
322 static u32 nbio_v7_4_get_pcie_data_offset(struct amdgpu_device *adev)
323 {
324 	return SOC15_REG_OFFSET(NBIO, 0, mmPCIE_DATA2);
325 }
326 
327 const struct nbio_hdp_flush_reg nbio_v7_4_hdp_flush_reg = {
328 	.ref_and_mask_cp0 = GPU_HDP_FLUSH_DONE__CP0_MASK,
329 	.ref_and_mask_cp1 = GPU_HDP_FLUSH_DONE__CP1_MASK,
330 	.ref_and_mask_cp2 = GPU_HDP_FLUSH_DONE__CP2_MASK,
331 	.ref_and_mask_cp3 = GPU_HDP_FLUSH_DONE__CP3_MASK,
332 	.ref_and_mask_cp4 = GPU_HDP_FLUSH_DONE__CP4_MASK,
333 	.ref_and_mask_cp5 = GPU_HDP_FLUSH_DONE__CP5_MASK,
334 	.ref_and_mask_cp6 = GPU_HDP_FLUSH_DONE__CP6_MASK,
335 	.ref_and_mask_cp7 = GPU_HDP_FLUSH_DONE__CP7_MASK,
336 	.ref_and_mask_cp8 = GPU_HDP_FLUSH_DONE__CP8_MASK,
337 	.ref_and_mask_cp9 = GPU_HDP_FLUSH_DONE__CP9_MASK,
338 	.ref_and_mask_sdma0 = GPU_HDP_FLUSH_DONE__SDMA0_MASK,
339 	.ref_and_mask_sdma1 = GPU_HDP_FLUSH_DONE__SDMA1_MASK,
340 };
341 
342 static void nbio_v7_4_init_registers(struct amdgpu_device *adev)
343 {
344 	uint32_t baco_cntl;
345 
346 	if (amdgpu_sriov_vf(adev))
347 		adev->rmmio_remap.reg_offset = SOC15_REG_OFFSET(NBIO, 0,
348 			mmBIF_BX_DEV0_EPF0_VF0_HDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
349 
350 	if (adev->ip_versions[NBIO_HWIP][0] == IP_VERSION(7, 4, 4) &&
351 	    !amdgpu_sriov_vf(adev)) {
352 		baco_cntl = RREG32_SOC15(NBIO, 0, mmBACO_CNTL);
353 		if (baco_cntl &
354 		    (BACO_CNTL__BACO_DUMMY_EN_MASK | BACO_CNTL__BACO_EN_MASK)) {
355 			baco_cntl &= ~(BACO_CNTL__BACO_DUMMY_EN_MASK |
356 				       BACO_CNTL__BACO_EN_MASK);
357 			dev_dbg(adev->dev, "Unsetting baco dummy mode %x",
358 				baco_cntl);
359 			WREG32_SOC15(NBIO, 0, mmBACO_CNTL, baco_cntl);
360 		}
361 	}
362 }
363 
364 static void nbio_v7_4_handle_ras_controller_intr_no_bifring(struct amdgpu_device *adev)
365 {
366 	uint32_t bif_doorbell_intr_cntl;
367 	struct ras_manager *obj = amdgpu_ras_find_obj(adev, adev->nbio.ras_if);
368 	struct ras_err_data err_data = {0, 0, 0, NULL};
369 	struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
370 
371 	if (adev->asic_type == CHIP_ALDEBARAN)
372 		bif_doorbell_intr_cntl = RREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL_ALDE);
373 	else
374 		bif_doorbell_intr_cntl = RREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL);
375 
376 	if (REG_GET_FIELD(bif_doorbell_intr_cntl,
377 		BIF_DOORBELL_INT_CNTL, RAS_CNTLR_INTERRUPT_STATUS)) {
378 		/* driver has to clear the interrupt status when bif ring is disabled */
379 		bif_doorbell_intr_cntl = REG_SET_FIELD(bif_doorbell_intr_cntl,
380 						BIF_DOORBELL_INT_CNTL,
381 						RAS_CNTLR_INTERRUPT_CLEAR, 1);
382 		if (adev->asic_type == CHIP_ALDEBARAN)
383 			WREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL_ALDE, bif_doorbell_intr_cntl);
384 		else
385 			WREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL, bif_doorbell_intr_cntl);
386 
387 		if (!ras->disable_ras_err_cnt_harvest) {
388 			/*
389 			 * clear error status after ras_controller_intr
390 			 * according to hw team and count ue number
391 			 * for query
392 			 */
393 			nbio_v7_4_query_ras_error_count(adev, &err_data);
394 
395 			/* logging on error cnt and printing for awareness */
396 			obj->err_data.ue_count += err_data.ue_count;
397 			obj->err_data.ce_count += err_data.ce_count;
398 
399 			if (err_data.ce_count)
400 				dev_info(adev->dev, "%ld correctable hardware "
401 						"errors detected in %s block, "
402 						"no user action is needed.\n",
403 						obj->err_data.ce_count,
404 						get_ras_block_str(adev->nbio.ras_if));
405 
406 			if (err_data.ue_count)
407 				dev_info(adev->dev, "%ld uncorrectable hardware "
408 						"errors detected in %s block\n",
409 						obj->err_data.ue_count,
410 						get_ras_block_str(adev->nbio.ras_if));
411 		}
412 
413 		dev_info(adev->dev, "RAS controller interrupt triggered "
414 					"by NBIF error\n");
415 
416 		/* ras_controller_int is dedicated for nbif ras error,
417 		 * not the global interrupt for sync flood
418 		 */
419 		amdgpu_ras_reset_gpu(adev);
420 	}
421 }
422 
423 static void nbio_v7_4_handle_ras_err_event_athub_intr_no_bifring(struct amdgpu_device *adev)
424 {
425 	uint32_t bif_doorbell_intr_cntl;
426 
427 	if (adev->asic_type == CHIP_ALDEBARAN)
428 		bif_doorbell_intr_cntl = RREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL_ALDE);
429 	else
430 		bif_doorbell_intr_cntl = RREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL);
431 
432 	if (REG_GET_FIELD(bif_doorbell_intr_cntl,
433 		BIF_DOORBELL_INT_CNTL, RAS_ATHUB_ERR_EVENT_INTERRUPT_STATUS)) {
434 		/* driver has to clear the interrupt status when bif ring is disabled */
435 		bif_doorbell_intr_cntl = REG_SET_FIELD(bif_doorbell_intr_cntl,
436 						BIF_DOORBELL_INT_CNTL,
437 						RAS_ATHUB_ERR_EVENT_INTERRUPT_CLEAR, 1);
438 
439 		if (adev->asic_type == CHIP_ALDEBARAN)
440 			WREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL_ALDE, bif_doorbell_intr_cntl);
441 		else
442 			WREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL, bif_doorbell_intr_cntl);
443 
444 		amdgpu_ras_global_ras_isr(adev);
445 	}
446 }
447 
448 
449 static int nbio_v7_4_set_ras_controller_irq_state(struct amdgpu_device *adev,
450 						  struct amdgpu_irq_src *src,
451 						  unsigned type,
452 						  enum amdgpu_interrupt_state state)
453 {
454 	/* The ras_controller_irq enablement should be done in psp bl when it
455 	 * tries to enable ras feature. Driver only need to set the correct interrupt
456 	 * vector for bare-metal and sriov use case respectively
457 	 */
458 	uint32_t bif_intr_cntl;
459 
460 	if (adev->asic_type == CHIP_ALDEBARAN)
461 		bif_intr_cntl = RREG32_SOC15(NBIO, 0, mmBIF_INTR_CNTL_ALDE);
462 	else
463 		bif_intr_cntl = RREG32_SOC15(NBIO, 0, mmBIF_INTR_CNTL);
464 
465 	if (state == AMDGPU_IRQ_STATE_ENABLE) {
466 		/* set interrupt vector select bit to 0 to select
467 		 * vetcor 1 for bare metal case */
468 		bif_intr_cntl = REG_SET_FIELD(bif_intr_cntl,
469 					      BIF_INTR_CNTL,
470 					      RAS_INTR_VEC_SEL, 0);
471 
472 		if (adev->asic_type == CHIP_ALDEBARAN)
473 			WREG32_SOC15(NBIO, 0, mmBIF_INTR_CNTL_ALDE, bif_intr_cntl);
474 		else
475 			WREG32_SOC15(NBIO, 0, mmBIF_INTR_CNTL, bif_intr_cntl);
476 
477 	}
478 
479 	return 0;
480 }
481 
482 static int nbio_v7_4_process_ras_controller_irq(struct amdgpu_device *adev,
483 						struct amdgpu_irq_src *source,
484 						struct amdgpu_iv_entry *entry)
485 {
486 	/* By design, the ih cookie for ras_controller_irq should be written
487 	 * to BIFring instead of general iv ring. However, due to known bif ring
488 	 * hw bug, it has to be disabled. There is no chance the process function
489 	 * will be involked. Just left it as a dummy one.
490 	 */
491 	return 0;
492 }
493 
494 static int nbio_v7_4_set_ras_err_event_athub_irq_state(struct amdgpu_device *adev,
495 						       struct amdgpu_irq_src *src,
496 						       unsigned type,
497 						       enum amdgpu_interrupt_state state)
498 {
499 	/* The ras_controller_irq enablement should be done in psp bl when it
500 	 * tries to enable ras feature. Driver only need to set the correct interrupt
501 	 * vector for bare-metal and sriov use case respectively
502 	 */
503 	uint32_t bif_intr_cntl;
504 
505 	if (adev->asic_type == CHIP_ALDEBARAN)
506 		bif_intr_cntl = RREG32_SOC15(NBIO, 0, mmBIF_INTR_CNTL_ALDE);
507 	else
508 		bif_intr_cntl = RREG32_SOC15(NBIO, 0, mmBIF_INTR_CNTL);
509 
510 	if (state == AMDGPU_IRQ_STATE_ENABLE) {
511 		/* set interrupt vector select bit to 0 to select
512 		 * vetcor 1 for bare metal case */
513 		bif_intr_cntl = REG_SET_FIELD(bif_intr_cntl,
514 					      BIF_INTR_CNTL,
515 					      RAS_INTR_VEC_SEL, 0);
516 
517 		if (adev->asic_type == CHIP_ALDEBARAN)
518 			WREG32_SOC15(NBIO, 0, mmBIF_INTR_CNTL_ALDE, bif_intr_cntl);
519 		else
520 			WREG32_SOC15(NBIO, 0, mmBIF_INTR_CNTL, bif_intr_cntl);
521 	}
522 
523 	return 0;
524 }
525 
526 static int nbio_v7_4_process_err_event_athub_irq(struct amdgpu_device *adev,
527 						 struct amdgpu_irq_src *source,
528 						 struct amdgpu_iv_entry *entry)
529 {
530 	/* By design, the ih cookie for err_event_athub_irq should be written
531 	 * to BIFring instead of general iv ring. However, due to known bif ring
532 	 * hw bug, it has to be disabled. There is no chance the process function
533 	 * will be involked. Just left it as a dummy one.
534 	 */
535 	return 0;
536 }
537 
538 static const struct amdgpu_irq_src_funcs nbio_v7_4_ras_controller_irq_funcs = {
539 	.set = nbio_v7_4_set_ras_controller_irq_state,
540 	.process = nbio_v7_4_process_ras_controller_irq,
541 };
542 
543 static const struct amdgpu_irq_src_funcs nbio_v7_4_ras_err_event_athub_irq_funcs = {
544 	.set = nbio_v7_4_set_ras_err_event_athub_irq_state,
545 	.process = nbio_v7_4_process_err_event_athub_irq,
546 };
547 
548 static int nbio_v7_4_init_ras_controller_interrupt (struct amdgpu_device *adev)
549 {
550 	int r;
551 
552 	/* init the irq funcs */
553 	adev->nbio.ras_controller_irq.funcs =
554 		&nbio_v7_4_ras_controller_irq_funcs;
555 	adev->nbio.ras_controller_irq.num_types = 1;
556 
557 	/* register ras controller interrupt */
558 	r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_BIF,
559 			      NBIF_7_4__SRCID__RAS_CONTROLLER_INTERRUPT,
560 			      &adev->nbio.ras_controller_irq);
561 
562 	return r;
563 }
564 
565 static int nbio_v7_4_init_ras_err_event_athub_interrupt (struct amdgpu_device *adev)
566 {
567 
568 	int r;
569 
570 	/* init the irq funcs */
571 	adev->nbio.ras_err_event_athub_irq.funcs =
572 		&nbio_v7_4_ras_err_event_athub_irq_funcs;
573 	adev->nbio.ras_err_event_athub_irq.num_types = 1;
574 
575 	/* register ras err event athub interrupt */
576 	r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_BIF,
577 			      NBIF_7_4__SRCID__ERREVENT_ATHUB_INTERRUPT,
578 			      &adev->nbio.ras_err_event_athub_irq);
579 
580 	return r;
581 }
582 
583 #define smnPARITY_ERROR_STATUS_UNCORR_GRP2	    0x13a20030
584 #define smnPARITY_ERROR_STATUS_UNCORR_GRP2_ALDE	0x13b20030
585 #define smnRAS_GLOBAL_STATUS_LO_ALDE            0x13b20020
586 
587 static void nbio_v7_4_query_ras_error_count(struct amdgpu_device *adev,
588 					void *ras_error_status)
589 {
590 	uint32_t global_sts, central_sts, int_eoi, parity_sts;
591 	uint32_t corr, fatal, non_fatal;
592 	struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
593 
594 	if (adev->asic_type == CHIP_ALDEBARAN)
595 		global_sts = RREG32_PCIE(smnRAS_GLOBAL_STATUS_LO_ALDE);
596 	else
597 		global_sts = RREG32_PCIE(smnRAS_GLOBAL_STATUS_LO);
598 
599 	corr = REG_GET_FIELD(global_sts, RAS_GLOBAL_STATUS_LO, ParityErrCorr);
600 	fatal = REG_GET_FIELD(global_sts, RAS_GLOBAL_STATUS_LO, ParityErrFatal);
601 	non_fatal = REG_GET_FIELD(global_sts, RAS_GLOBAL_STATUS_LO,
602 				ParityErrNonFatal);
603 
604 	if (adev->asic_type == CHIP_ALDEBARAN)
605 		parity_sts = RREG32_PCIE(smnPARITY_ERROR_STATUS_UNCORR_GRP2_ALDE);
606 	else
607 		parity_sts = RREG32_PCIE(smnPARITY_ERROR_STATUS_UNCORR_GRP2);
608 
609 	if (corr)
610 		err_data->ce_count++;
611 	if (fatal)
612 		err_data->ue_count++;
613 
614 	if (corr || fatal || non_fatal) {
615 		central_sts = RREG32_PCIE(smnBIFL_RAS_CENTRAL_STATUS);
616 
617 		/* clear error status register */
618 		if (adev->asic_type == CHIP_ALDEBARAN)
619 			WREG32_PCIE(smnRAS_GLOBAL_STATUS_LO_ALDE, global_sts);
620 		else
621 			WREG32_PCIE(smnRAS_GLOBAL_STATUS_LO, global_sts);
622 
623 		if (fatal)
624 		{
625 			/* clear parity fatal error indication field */
626 			if (adev->asic_type == CHIP_ALDEBARAN)
627 				WREG32_PCIE(smnPARITY_ERROR_STATUS_UNCORR_GRP2_ALDE, parity_sts);
628 			else
629 				WREG32_PCIE(smnPARITY_ERROR_STATUS_UNCORR_GRP2, parity_sts);
630 		}
631 
632 		if (REG_GET_FIELD(central_sts, BIFL_RAS_CENTRAL_STATUS,
633 				BIFL_RasContller_Intr_Recv)) {
634 			/* clear interrupt status register */
635 			WREG32_PCIE(smnBIFL_RAS_CENTRAL_STATUS, central_sts);
636 			int_eoi = RREG32_PCIE(smnIOHC_INTERRUPT_EOI);
637 			int_eoi = REG_SET_FIELD(int_eoi,
638 					IOHC_INTERRUPT_EOI, SMI_EOI, 1);
639 			WREG32_PCIE(smnIOHC_INTERRUPT_EOI, int_eoi);
640 		}
641 	}
642 }
643 
644 static void nbio_v7_4_enable_doorbell_interrupt(struct amdgpu_device *adev,
645 						bool enable)
646 {
647 	if (adev->asic_type == CHIP_ALDEBARAN)
648 		WREG32_FIELD15(NBIO, 0, BIF_DOORBELL_INT_CNTL_ALDE,
649 		       DOORBELL_INTERRUPT_DISABLE, enable ? 0 : 1);
650 	else
651 		WREG32_FIELD15(NBIO, 0, BIF_DOORBELL_INT_CNTL,
652 		       DOORBELL_INTERRUPT_DISABLE, enable ? 0 : 1);
653 }
654 
655 const struct amdgpu_ras_block_hw_ops nbio_v7_4_ras_hw_ops = {
656 	.query_ras_error_count = nbio_v7_4_query_ras_error_count,
657 };
658 
659 struct amdgpu_nbio_ras nbio_v7_4_ras = {
660 	.ras_block = {
661 		.ras_comm = {
662 			.name = "pcie_bif",
663 			.block = AMDGPU_RAS_BLOCK__PCIE_BIF,
664 			.type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE,
665 		},
666 		.hw_ops = &nbio_v7_4_ras_hw_ops,
667 		.ras_late_init = amdgpu_nbio_ras_late_init,
668 	},
669 	.handle_ras_controller_intr_no_bifring = nbio_v7_4_handle_ras_controller_intr_no_bifring,
670 	.handle_ras_err_event_athub_intr_no_bifring = nbio_v7_4_handle_ras_err_event_athub_intr_no_bifring,
671 	.init_ras_controller_interrupt = nbio_v7_4_init_ras_controller_interrupt,
672 	.init_ras_err_event_athub_interrupt = nbio_v7_4_init_ras_err_event_athub_interrupt,
673 };
674 
675 
676 #ifdef CONFIG_PCIEASPM
677 static void nbio_v7_4_program_ltr(struct amdgpu_device *adev)
678 {
679 	uint32_t def, data;
680 
681 	WREG32_PCIE(smnRCC_EP_DEV0_0_EP_PCIE_TX_LTR_CNTL, 0x75EB);
682 
683 	def = data = RREG32_PCIE(smnRCC_BIF_STRAP2);
684 	data &= ~RCC_BIF_STRAP2__STRAP_LTR_IN_ASPML1_DIS_MASK;
685 	if (def != data)
686 		WREG32_PCIE(smnRCC_BIF_STRAP2, data);
687 
688 	def = data = RREG32_PCIE(smnRCC_EP_DEV0_0_EP_PCIE_TX_LTR_CNTL);
689 	data &= ~EP_PCIE_TX_LTR_CNTL__LTR_PRIV_MSG_DIS_IN_PM_NON_D0_MASK;
690 	if (def != data)
691 		WREG32_PCIE(smnRCC_EP_DEV0_0_EP_PCIE_TX_LTR_CNTL, data);
692 
693 	def = data = RREG32_PCIE(smnBIF_CFG_DEV0_EPF0_DEVICE_CNTL2);
694 	data |= BIF_CFG_DEV0_EPF0_DEVICE_CNTL2__LTR_EN_MASK;
695 	if (def != data)
696 		WREG32_PCIE(smnBIF_CFG_DEV0_EPF0_DEVICE_CNTL2, data);
697 }
698 #endif
699 
700 static void nbio_v7_4_program_aspm(struct amdgpu_device *adev)
701 {
702 #ifdef CONFIG_PCIEASPM
703 	uint32_t def, data;
704 
705 	if (adev->ip_versions[NBIO_HWIP][0] == IP_VERSION(7, 4, 4))
706 		return;
707 
708 	def = data = RREG32_PCIE(smnPCIE_LC_CNTL);
709 	data &= ~PCIE_LC_CNTL__LC_L1_INACTIVITY_MASK;
710 	data &= ~PCIE_LC_CNTL__LC_L0S_INACTIVITY_MASK;
711 	data |= PCIE_LC_CNTL__LC_PMI_TO_L1_DIS_MASK;
712 	if (def != data)
713 		WREG32_PCIE(smnPCIE_LC_CNTL, data);
714 
715 	def = data = RREG32_PCIE(smnPCIE_LC_CNTL7);
716 	data |= PCIE_LC_CNTL7__LC_NBIF_ASPM_INPUT_EN_MASK;
717 	if (def != data)
718 		WREG32_PCIE(smnPCIE_LC_CNTL7, data);
719 
720 	def = data = RREG32_PCIE(smnNBIF_MGCG_CTRL_LCLK);
721 	data |= NBIF_MGCG_CTRL_LCLK__NBIF_MGCG_REG_DIS_LCLK_MASK;
722 	if (def != data)
723 		WREG32_PCIE(smnNBIF_MGCG_CTRL_LCLK, data);
724 
725 	def = data = RREG32_PCIE(smnPCIE_LC_CNTL3);
726 	data |= PCIE_LC_CNTL3__LC_DSC_DONT_ENTER_L23_AFTER_PME_ACK_MASK;
727 	if (def != data)
728 		WREG32_PCIE(smnPCIE_LC_CNTL3, data);
729 
730 	def = data = RREG32_PCIE(smnRCC_BIF_STRAP3);
731 	data &= ~RCC_BIF_STRAP3__STRAP_VLINK_ASPM_IDLE_TIMER_MASK;
732 	data &= ~RCC_BIF_STRAP3__STRAP_VLINK_PM_L1_ENTRY_TIMER_MASK;
733 	if (def != data)
734 		WREG32_PCIE(smnRCC_BIF_STRAP3, data);
735 
736 	def = data = RREG32_PCIE(smnRCC_BIF_STRAP5);
737 	data &= ~RCC_BIF_STRAP5__STRAP_VLINK_LDN_ENTRY_TIMER_MASK;
738 	if (def != data)
739 		WREG32_PCIE(smnRCC_BIF_STRAP5, data);
740 
741 	def = data = RREG32_PCIE(smnBIF_CFG_DEV0_EPF0_DEVICE_CNTL2);
742 	data &= ~BIF_CFG_DEV0_EPF0_DEVICE_CNTL2__LTR_EN_MASK;
743 	if (def != data)
744 		WREG32_PCIE(smnBIF_CFG_DEV0_EPF0_DEVICE_CNTL2, data);
745 
746 	WREG32_PCIE(smnBIF_CFG_DEV0_EPF0_PCIE_LTR_CAP, 0x10011001);
747 
748 	def = data = RREG32_PCIE(smnPSWUSP0_PCIE_LC_CNTL2);
749 	data |= PSWUSP0_PCIE_LC_CNTL2__LC_ALLOW_PDWN_IN_L1_MASK |
750 		PSWUSP0_PCIE_LC_CNTL2__LC_ALLOW_PDWN_IN_L23_MASK;
751 	data &= ~PSWUSP0_PCIE_LC_CNTL2__LC_RCV_L0_TO_RCV_L0S_DIS_MASK;
752 	if (def != data)
753 		WREG32_PCIE(smnPSWUSP0_PCIE_LC_CNTL2, data);
754 
755 	def = data = RREG32_PCIE(smnPCIE_LC_CNTL6);
756 	data |= PCIE_LC_CNTL6__LC_L1_POWERDOWN_MASK |
757 		PCIE_LC_CNTL6__LC_RX_L0S_STANDBY_EN_MASK;
758 	if (def != data)
759 		WREG32_PCIE(smnPCIE_LC_CNTL6, data);
760 
761 	/* Don't bother about LTR if LTR is not enabled
762 	 * in the path */
763 	if (adev->pdev->ltr_path)
764 		nbio_v7_4_program_ltr(adev);
765 
766 	def = data = RREG32_PCIE(smnRCC_BIF_STRAP3);
767 	data |= 0x5DE0 << RCC_BIF_STRAP3__STRAP_VLINK_ASPM_IDLE_TIMER__SHIFT;
768 	data |= 0x0010 << RCC_BIF_STRAP3__STRAP_VLINK_PM_L1_ENTRY_TIMER__SHIFT;
769 	if (def != data)
770 		WREG32_PCIE(smnRCC_BIF_STRAP3, data);
771 
772 	def = data = RREG32_PCIE(smnRCC_BIF_STRAP5);
773 	data |= 0x0010 << RCC_BIF_STRAP5__STRAP_VLINK_LDN_ENTRY_TIMER__SHIFT;
774 	if (def != data)
775 		WREG32_PCIE(smnRCC_BIF_STRAP5, data);
776 
777 	def = data = RREG32_PCIE(smnPCIE_LC_CNTL);
778 	data &= ~PCIE_LC_CNTL__LC_L0S_INACTIVITY_MASK;
779 	data |= 0x9 << PCIE_LC_CNTL__LC_L1_INACTIVITY__SHIFT;
780 	data |= 0x1 << PCIE_LC_CNTL__LC_PMI_TO_L1_DIS__SHIFT;
781 	if (def != data)
782 		WREG32_PCIE(smnPCIE_LC_CNTL, data);
783 
784 	def = data = RREG32_PCIE(smnPCIE_LC_CNTL3);
785 	data &= ~PCIE_LC_CNTL3__LC_DSC_DONT_ENTER_L23_AFTER_PME_ACK_MASK;
786 	if (def != data)
787 		WREG32_PCIE(smnPCIE_LC_CNTL3, data);
788 #endif
789 }
790 
791 const struct amdgpu_nbio_funcs nbio_v7_4_funcs = {
792 	.get_hdp_flush_req_offset = nbio_v7_4_get_hdp_flush_req_offset,
793 	.get_hdp_flush_done_offset = nbio_v7_4_get_hdp_flush_done_offset,
794 	.get_pcie_index_offset = nbio_v7_4_get_pcie_index_offset,
795 	.get_pcie_data_offset = nbio_v7_4_get_pcie_data_offset,
796 	.get_rev_id = nbio_v7_4_get_rev_id,
797 	.mc_access_enable = nbio_v7_4_mc_access_enable,
798 	.get_memsize = nbio_v7_4_get_memsize,
799 	.sdma_doorbell_range = nbio_v7_4_sdma_doorbell_range,
800 	.vcn_doorbell_range = nbio_v7_4_vcn_doorbell_range,
801 	.enable_doorbell_aperture = nbio_v7_4_enable_doorbell_aperture,
802 	.enable_doorbell_selfring_aperture = nbio_v7_4_enable_doorbell_selfring_aperture,
803 	.ih_doorbell_range = nbio_v7_4_ih_doorbell_range,
804 	.enable_doorbell_interrupt = nbio_v7_4_enable_doorbell_interrupt,
805 	.update_medium_grain_clock_gating = nbio_v7_4_update_medium_grain_clock_gating,
806 	.update_medium_grain_light_sleep = nbio_v7_4_update_medium_grain_light_sleep,
807 	.get_clockgating_state = nbio_v7_4_get_clockgating_state,
808 	.ih_control = nbio_v7_4_ih_control,
809 	.init_registers = nbio_v7_4_init_registers,
810 	.remap_hdp_registers = nbio_v7_4_remap_hdp_registers,
811 	.program_aspm =  nbio_v7_4_program_aspm,
812 };
813