1 /*
2  * Copyright 2016 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  */
23 #include "amdgpu.h"
24 #include "amdgpu_atombios.h"
25 #include "nbio_v6_1.h"
26 
27 #include "nbio/nbio_6_1_default.h"
28 #include "nbio/nbio_6_1_offset.h"
29 #include "nbio/nbio_6_1_sh_mask.h"
30 #include "nbio/nbio_6_1_smn.h"
31 #include "vega10_enum.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	0x1013a05c
39 #define NBIF_MGCG_CTRL_LCLK__NBIF_MGCG_REG_DIS_LCLK_MASK	0x00001000L
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_EP_DEV0_0_EP_PCIE_TX_LTR_CNTL	0x10123530
43 #define smnBIF_CFG_DEV0_EPF0_DEVICE_CNTL2	0x1014008c
44 #define smnBIF_CFG_DEV0_EPF0_PCIE_LTR_CAP	0x10140324
45 #define smnPSWUSP0_PCIE_LC_CNTL2		0x111402c4
46 #define smnRCC_BIF_STRAP2	0x10123488
47 #define smnRCC_BIF_STRAP3	0x1012348c
48 #define smnRCC_BIF_STRAP5	0x10123494
49 #define BIF_CFG_DEV0_EPF0_DEVICE_CNTL2__LTR_EN_MASK			0x0400L
50 #define RCC_BIF_STRAP5__STRAP_VLINK_LDN_ENTRY_TIMER_MASK	0x0000FFFFL
51 #define RCC_BIF_STRAP2__STRAP_LTR_IN_ASPML1_DIS_MASK	0x00004000L
52 #define RCC_BIF_STRAP3__STRAP_VLINK_ASPM_IDLE_TIMER__SHIFT	0x0
53 #define RCC_BIF_STRAP3__STRAP_VLINK_PM_L1_ENTRY_TIMER__SHIFT	0x10
54 #define RCC_BIF_STRAP5__STRAP_VLINK_LDN_ENTRY_TIMER__SHIFT	0x0
55 
56 static void nbio_v6_1_remap_hdp_registers(struct amdgpu_device *adev)
57 {
58 	WREG32_SOC15(NBIO, 0, mmREMAP_HDP_MEM_FLUSH_CNTL,
59 		adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL);
60 	WREG32_SOC15(NBIO, 0, mmREMAP_HDP_REG_FLUSH_CNTL,
61 		adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_REG_FLUSH_CNTL);
62 }
63 
64 static u32 nbio_v6_1_get_rev_id(struct amdgpu_device *adev)
65 {
66 	u32 tmp = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_STRAP0);
67 
68 	tmp &= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0_MASK;
69 	tmp >>= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0__SHIFT;
70 
71 	return tmp;
72 }
73 
74 static void nbio_v6_1_mc_access_enable(struct amdgpu_device *adev, bool enable)
75 {
76 	if (enable)
77 		WREG32_SOC15(NBIO, 0, mmBIF_FB_EN,
78 			     BIF_FB_EN__FB_READ_EN_MASK |
79 			     BIF_FB_EN__FB_WRITE_EN_MASK);
80 	else
81 		WREG32_SOC15(NBIO, 0, mmBIF_FB_EN, 0);
82 }
83 
84 static u32 nbio_v6_1_get_memsize(struct amdgpu_device *adev)
85 {
86 	return RREG32_SOC15(NBIO, 0, mmRCC_PF_0_0_RCC_CONFIG_MEMSIZE);
87 }
88 
89 static void nbio_v6_1_sdma_doorbell_range(struct amdgpu_device *adev, int instance,
90 			bool use_doorbell, int doorbell_index, int doorbell_size)
91 {
92 	u32 reg = instance == 0 ? SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA0_DOORBELL_RANGE) :
93 			SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA1_DOORBELL_RANGE);
94 
95 	u32 doorbell_range = RREG32(reg);
96 
97 	if (use_doorbell) {
98 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, OFFSET, doorbell_index);
99 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, doorbell_size);
100 	} else
101 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 0);
102 
103 	WREG32(reg, doorbell_range);
104 
105 }
106 
107 static void nbio_v6_1_enable_doorbell_aperture(struct amdgpu_device *adev,
108 					       bool enable)
109 {
110 	WREG32_FIELD15(NBIO, 0, RCC_PF_0_0_RCC_DOORBELL_APER_EN, BIF_DOORBELL_APER_EN, enable ? 1 : 0);
111 }
112 
113 static void nbio_v6_1_enable_doorbell_selfring_aperture(struct amdgpu_device *adev,
114 							bool enable)
115 {
116 	u32 tmp = 0;
117 
118 	if (enable) {
119 		tmp = REG_SET_FIELD(tmp, BIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_CNTL, DOORBELL_SELFRING_GPA_APER_EN, 1) |
120 		      REG_SET_FIELD(tmp, BIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_CNTL, DOORBELL_SELFRING_GPA_APER_MODE, 1) |
121 		      REG_SET_FIELD(tmp, BIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_CNTL, DOORBELL_SELFRING_GPA_APER_SIZE, 0);
122 
123 		WREG32_SOC15(NBIO, 0, mmBIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_BASE_LOW,
124 			     lower_32_bits(adev->doorbell.base));
125 		WREG32_SOC15(NBIO, 0, mmBIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_BASE_HIGH,
126 			     upper_32_bits(adev->doorbell.base));
127 	}
128 
129 	WREG32_SOC15(NBIO, 0, mmBIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_CNTL, tmp);
130 }
131 
132 
133 static void nbio_v6_1_ih_doorbell_range(struct amdgpu_device *adev,
134 					bool use_doorbell, int doorbell_index)
135 {
136 	u32 ih_doorbell_range = RREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE);
137 
138 	if (use_doorbell) {
139 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, OFFSET, doorbell_index);
140 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
141 						  BIF_IH_DOORBELL_RANGE, SIZE, 6);
142 	} else
143 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 0);
144 
145 	WREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE, ih_doorbell_range);
146 }
147 
148 static void nbio_v6_1_ih_control(struct amdgpu_device *adev)
149 {
150 	u32 interrupt_cntl;
151 
152 	/* setup interrupt control */
153 	WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL2, adev->dummy_page_addr >> 8);
154 	interrupt_cntl = RREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL);
155 	/* INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=0 - dummy read disabled with msi, enabled without msi
156 	 * INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=1 - dummy read controlled by IH_DUMMY_RD_EN
157 	 */
158 	interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_DUMMY_RD_OVERRIDE, 0);
159 	/* INTERRUPT_CNTL__IH_REQ_NONSNOOP_EN_MASK=1 if ring is in non-cacheable memory, e.g., vram */
160 	interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_REQ_NONSNOOP_EN, 0);
161 	WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL, interrupt_cntl);
162 }
163 
164 static void nbio_v6_1_update_medium_grain_clock_gating(struct amdgpu_device *adev,
165 						       bool enable)
166 {
167 	uint32_t def, data;
168 
169 	def = data = RREG32_PCIE(smnCPM_CONTROL);
170 	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG)) {
171 		data |= (CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK |
172 			 CPM_CONTROL__TXCLK_DYN_GATE_ENABLE_MASK |
173 			 CPM_CONTROL__TXCLK_PERM_GATE_ENABLE_MASK |
174 			 CPM_CONTROL__TXCLK_LCNT_GATE_ENABLE_MASK |
175 			 CPM_CONTROL__TXCLK_REGS_GATE_ENABLE_MASK |
176 			 CPM_CONTROL__TXCLK_PRBS_GATE_ENABLE_MASK |
177 			 CPM_CONTROL__REFCLK_REGS_GATE_ENABLE_MASK);
178 	} else {
179 		data &= ~(CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK |
180 			  CPM_CONTROL__TXCLK_DYN_GATE_ENABLE_MASK |
181 			  CPM_CONTROL__TXCLK_PERM_GATE_ENABLE_MASK |
182 			  CPM_CONTROL__TXCLK_LCNT_GATE_ENABLE_MASK |
183 			  CPM_CONTROL__TXCLK_REGS_GATE_ENABLE_MASK |
184 			  CPM_CONTROL__TXCLK_PRBS_GATE_ENABLE_MASK |
185 			  CPM_CONTROL__REFCLK_REGS_GATE_ENABLE_MASK);
186 	}
187 
188 	if (def != data)
189 		WREG32_PCIE(smnCPM_CONTROL, data);
190 }
191 
192 static void nbio_v6_1_update_medium_grain_light_sleep(struct amdgpu_device *adev,
193 						      bool enable)
194 {
195 	uint32_t def, data;
196 
197 	def = data = RREG32_PCIE(smnPCIE_CNTL2);
198 	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_LS)) {
199 		data |= (PCIE_CNTL2__SLV_MEM_LS_EN_MASK |
200 			 PCIE_CNTL2__MST_MEM_LS_EN_MASK |
201 			 PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK);
202 	} else {
203 		data &= ~(PCIE_CNTL2__SLV_MEM_LS_EN_MASK |
204 			  PCIE_CNTL2__MST_MEM_LS_EN_MASK |
205 			  PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK);
206 	}
207 
208 	if (def != data)
209 		WREG32_PCIE(smnPCIE_CNTL2, data);
210 }
211 
212 static void nbio_v6_1_get_clockgating_state(struct amdgpu_device *adev,
213 					    u32 *flags)
214 {
215 	int data;
216 
217 	/* AMD_CG_SUPPORT_BIF_MGCG */
218 	data = RREG32_PCIE(smnCPM_CONTROL);
219 	if (data & CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK)
220 		*flags |= AMD_CG_SUPPORT_BIF_MGCG;
221 
222 	/* AMD_CG_SUPPORT_BIF_LS */
223 	data = RREG32_PCIE(smnPCIE_CNTL2);
224 	if (data & PCIE_CNTL2__SLV_MEM_LS_EN_MASK)
225 		*flags |= AMD_CG_SUPPORT_BIF_LS;
226 }
227 
228 static u32 nbio_v6_1_get_hdp_flush_req_offset(struct amdgpu_device *adev)
229 {
230 	return SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_GPU_HDP_FLUSH_REQ);
231 }
232 
233 static u32 nbio_v6_1_get_hdp_flush_done_offset(struct amdgpu_device *adev)
234 {
235 	return SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_GPU_HDP_FLUSH_DONE);
236 }
237 
238 static u32 nbio_v6_1_get_pcie_index_offset(struct amdgpu_device *adev)
239 {
240 	return SOC15_REG_OFFSET(NBIO, 0, mmPCIE_INDEX2);
241 }
242 
243 static u32 nbio_v6_1_get_pcie_data_offset(struct amdgpu_device *adev)
244 {
245 	return SOC15_REG_OFFSET(NBIO, 0, mmPCIE_DATA2);
246 }
247 
248 const struct nbio_hdp_flush_reg nbio_v6_1_hdp_flush_reg = {
249 	.ref_and_mask_cp0 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP0_MASK,
250 	.ref_and_mask_cp1 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP1_MASK,
251 	.ref_and_mask_cp2 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP2_MASK,
252 	.ref_and_mask_cp3 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP3_MASK,
253 	.ref_and_mask_cp4 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP4_MASK,
254 	.ref_and_mask_cp5 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP5_MASK,
255 	.ref_and_mask_cp6 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP6_MASK,
256 	.ref_and_mask_cp7 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP7_MASK,
257 	.ref_and_mask_cp8 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP8_MASK,
258 	.ref_and_mask_cp9 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP9_MASK,
259 	.ref_and_mask_sdma0 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__SDMA0_MASK,
260 	.ref_and_mask_sdma1 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__SDMA1_MASK
261 };
262 
263 static void nbio_v6_1_init_registers(struct amdgpu_device *adev)
264 {
265 	uint32_t def, data;
266 
267 	def = data = RREG32_PCIE(smnPCIE_CONFIG_CNTL);
268 	data = REG_SET_FIELD(data, PCIE_CONFIG_CNTL, CI_SWUS_MAX_READ_REQUEST_SIZE_MODE, 1);
269 	data = REG_SET_FIELD(data, PCIE_CONFIG_CNTL, CI_SWUS_MAX_READ_REQUEST_SIZE_PRIV, 1);
270 
271 	if (def != data)
272 		WREG32_PCIE(smnPCIE_CONFIG_CNTL, data);
273 
274 	def = data = RREG32_PCIE(smnPCIE_CI_CNTL);
275 	data = REG_SET_FIELD(data, PCIE_CI_CNTL, CI_SLV_ORDERING_DIS, 1);
276 
277 	if (def != data)
278 		WREG32_PCIE(smnPCIE_CI_CNTL, data);
279 
280 	if (amdgpu_sriov_vf(adev))
281 		adev->rmmio_remap.reg_offset = SOC15_REG_OFFSET(NBIO, 0,
282 			mmBIF_BX_DEV0_EPF0_VF0_HDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
283 }
284 
285 static void nbio_v6_1_program_ltr(struct amdgpu_device *adev)
286 {
287 	uint32_t def, data;
288 
289 	WREG32_PCIE(smnRCC_EP_DEV0_0_EP_PCIE_TX_LTR_CNTL, 0x75EB);
290 
291 	def = data = RREG32_PCIE(smnRCC_BIF_STRAP2);
292 	data &= ~RCC_BIF_STRAP2__STRAP_LTR_IN_ASPML1_DIS_MASK;
293 	if (def != data)
294 		WREG32_PCIE(smnRCC_BIF_STRAP2, data);
295 
296 	def = data = RREG32_PCIE(smnRCC_EP_DEV0_0_EP_PCIE_TX_LTR_CNTL);
297 	data &= ~EP_PCIE_TX_LTR_CNTL__LTR_PRIV_MSG_DIS_IN_PM_NON_D0_MASK;
298 	if (def != data)
299 		WREG32_PCIE(smnRCC_EP_DEV0_0_EP_PCIE_TX_LTR_CNTL, data);
300 
301 	def = data = RREG32_PCIE(smnBIF_CFG_DEV0_EPF0_DEVICE_CNTL2);
302 	data |= BIF_CFG_DEV0_EPF0_DEVICE_CNTL2__LTR_EN_MASK;
303 	if (def != data)
304 		WREG32_PCIE(smnBIF_CFG_DEV0_EPF0_DEVICE_CNTL2, data);
305 }
306 
307 static void nbio_v6_1_program_aspm(struct amdgpu_device *adev)
308 {
309 	uint32_t def, data;
310 
311 	def = data = RREG32_PCIE(smnPCIE_LC_CNTL);
312 	data &= ~PCIE_LC_CNTL__LC_L1_INACTIVITY_MASK;
313 	data &= ~PCIE_LC_CNTL__LC_L0S_INACTIVITY_MASK;
314 	data |= PCIE_LC_CNTL__LC_PMI_TO_L1_DIS_MASK;
315 	if (def != data)
316 		WREG32_PCIE(smnPCIE_LC_CNTL, data);
317 
318 	def = data = RREG32_PCIE(smnPCIE_LC_CNTL7);
319 	data |= PCIE_LC_CNTL7__LC_NBIF_ASPM_INPUT_EN_MASK;
320 	if (def != data)
321 		WREG32_PCIE(smnPCIE_LC_CNTL7, data);
322 
323 	def = data = RREG32_PCIE(smnNBIF_MGCG_CTRL_LCLK);
324 	data |= NBIF_MGCG_CTRL_LCLK__NBIF_MGCG_REG_DIS_LCLK_MASK;
325 	if (def != data)
326 		WREG32_PCIE(smnNBIF_MGCG_CTRL_LCLK, data);
327 
328 	def = data = RREG32_PCIE(smnPCIE_LC_CNTL3);
329 	data |= PCIE_LC_CNTL3__LC_DSC_DONT_ENTER_L23_AFTER_PME_ACK_MASK;
330 	if (def != data)
331 		WREG32_PCIE(smnPCIE_LC_CNTL3, data);
332 
333 	def = data = RREG32_PCIE(smnRCC_BIF_STRAP3);
334 	data &= ~RCC_BIF_STRAP3__STRAP_VLINK_ASPM_IDLE_TIMER_MASK;
335 	data &= ~RCC_BIF_STRAP3__STRAP_VLINK_PM_L1_ENTRY_TIMER_MASK;
336 	if (def != data)
337 		WREG32_PCIE(smnRCC_BIF_STRAP3, data);
338 
339 	def = data = RREG32_PCIE(smnRCC_BIF_STRAP5);
340 	data &= ~RCC_BIF_STRAP5__STRAP_VLINK_LDN_ENTRY_TIMER_MASK;
341 	if (def != data)
342 		WREG32_PCIE(smnRCC_BIF_STRAP5, data);
343 
344 	def = data = RREG32_PCIE(smnBIF_CFG_DEV0_EPF0_DEVICE_CNTL2);
345 	data &= ~BIF_CFG_DEV0_EPF0_DEVICE_CNTL2__LTR_EN_MASK;
346 	if (def != data)
347 		WREG32_PCIE(smnBIF_CFG_DEV0_EPF0_DEVICE_CNTL2, data);
348 
349 	WREG32_PCIE(smnBIF_CFG_DEV0_EPF0_PCIE_LTR_CAP, 0x10011001);
350 
351 	def = data = RREG32_PCIE(smnPSWUSP0_PCIE_LC_CNTL2);
352 	data |= PSWUSP0_PCIE_LC_CNTL2__LC_ALLOW_PDWN_IN_L1_MASK |
353 		PSWUSP0_PCIE_LC_CNTL2__LC_ALLOW_PDWN_IN_L23_MASK;
354 	data &= ~PSWUSP0_PCIE_LC_CNTL2__LC_RCV_L0_TO_RCV_L0S_DIS_MASK;
355 	if (def != data)
356 		WREG32_PCIE(smnPSWUSP0_PCIE_LC_CNTL2, data);
357 
358 	def = data = RREG32_PCIE(smnPCIE_LC_CNTL6);
359 	data |= PCIE_LC_CNTL6__LC_L1_POWERDOWN_MASK |
360 		PCIE_LC_CNTL6__LC_RX_L0S_STANDBY_EN_MASK;
361 	if (def != data)
362 		WREG32_PCIE(smnPCIE_LC_CNTL6, data);
363 
364 	nbio_v6_1_program_ltr(adev);
365 
366 	def = data = RREG32_PCIE(smnRCC_BIF_STRAP3);
367 	data |= 0x5DE0 << RCC_BIF_STRAP3__STRAP_VLINK_ASPM_IDLE_TIMER__SHIFT;
368 	data |= 0x0010 << RCC_BIF_STRAP3__STRAP_VLINK_PM_L1_ENTRY_TIMER__SHIFT;
369 	if (def != data)
370 		WREG32_PCIE(smnRCC_BIF_STRAP3, data);
371 
372 	def = data = RREG32_PCIE(smnRCC_BIF_STRAP5);
373 	data |= 0x0010 << RCC_BIF_STRAP5__STRAP_VLINK_LDN_ENTRY_TIMER__SHIFT;
374 	if (def != data)
375 		WREG32_PCIE(smnRCC_BIF_STRAP5, data);
376 
377 	def = data = RREG32_PCIE(smnPCIE_LC_CNTL);
378 	data &= ~PCIE_LC_CNTL__LC_L0S_INACTIVITY_MASK;
379 	data |= 0x9 << PCIE_LC_CNTL__LC_L1_INACTIVITY__SHIFT;
380 	data |= 0x1 << PCIE_LC_CNTL__LC_PMI_TO_L1_DIS__SHIFT;
381 	if (def != data)
382 		WREG32_PCIE(smnPCIE_LC_CNTL, data);
383 
384 	def = data = RREG32_PCIE(smnPCIE_LC_CNTL3);
385 	data &= ~PCIE_LC_CNTL3__LC_DSC_DONT_ENTER_L23_AFTER_PME_ACK_MASK;
386 	if (def != data)
387 		WREG32_PCIE(smnPCIE_LC_CNTL3, data);
388 }
389 
390 const struct amdgpu_nbio_funcs nbio_v6_1_funcs = {
391 	.get_hdp_flush_req_offset = nbio_v6_1_get_hdp_flush_req_offset,
392 	.get_hdp_flush_done_offset = nbio_v6_1_get_hdp_flush_done_offset,
393 	.get_pcie_index_offset = nbio_v6_1_get_pcie_index_offset,
394 	.get_pcie_data_offset = nbio_v6_1_get_pcie_data_offset,
395 	.get_rev_id = nbio_v6_1_get_rev_id,
396 	.mc_access_enable = nbio_v6_1_mc_access_enable,
397 	.get_memsize = nbio_v6_1_get_memsize,
398 	.sdma_doorbell_range = nbio_v6_1_sdma_doorbell_range,
399 	.enable_doorbell_aperture = nbio_v6_1_enable_doorbell_aperture,
400 	.enable_doorbell_selfring_aperture = nbio_v6_1_enable_doorbell_selfring_aperture,
401 	.ih_doorbell_range = nbio_v6_1_ih_doorbell_range,
402 	.update_medium_grain_clock_gating = nbio_v6_1_update_medium_grain_clock_gating,
403 	.update_medium_grain_light_sleep = nbio_v6_1_update_medium_grain_light_sleep,
404 	.get_clockgating_state = nbio_v6_1_get_clockgating_state,
405 	.ih_control = nbio_v6_1_ih_control,
406 	.init_registers = nbio_v6_1_init_registers,
407 	.remap_hdp_registers = nbio_v6_1_remap_hdp_registers,
408 	.program_aspm =  nbio_v6_1_program_aspm,
409 };
410