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_v7_0.h"
26 
27 #include "nbio/nbio_7_0_default.h"
28 #include "nbio/nbio_7_0_offset.h"
29 #include "nbio/nbio_7_0_sh_mask.h"
30 #include "nbio/nbio_7_0_smn.h"
31 #include "vega10_enum.h"
32 #include <uapi/linux/kfd_ioctl.h>
33 
34 #define smnNBIF_MGCG_CTRL_LCLK	0x1013a05c
35 
36 static void nbio_v7_0_remap_hdp_registers(struct amdgpu_device *adev)
37 {
38 	WREG32_SOC15(NBIO, 0, mmREMAP_HDP_MEM_FLUSH_CNTL,
39 		adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL);
40 	WREG32_SOC15(NBIO, 0, mmREMAP_HDP_REG_FLUSH_CNTL,
41 		adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_REG_FLUSH_CNTL);
42 }
43 
44 static u32 nbio_v7_0_get_rev_id(struct amdgpu_device *adev)
45 {
46 	u32 tmp = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_STRAP0);
47 
48 	tmp &= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0_MASK;
49 	tmp >>= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0__SHIFT;
50 
51 	return tmp;
52 }
53 
54 static void nbio_v7_0_mc_access_enable(struct amdgpu_device *adev, bool enable)
55 {
56 	if (enable)
57 		WREG32_SOC15(NBIO, 0, mmBIF_FB_EN,
58 			BIF_FB_EN__FB_READ_EN_MASK | BIF_FB_EN__FB_WRITE_EN_MASK);
59 	else
60 		WREG32_SOC15(NBIO, 0, mmBIF_FB_EN, 0);
61 }
62 
63 static u32 nbio_v7_0_get_memsize(struct amdgpu_device *adev)
64 {
65 	return RREG32_SOC15(NBIO, 0, mmRCC_CONFIG_MEMSIZE);
66 }
67 
68 static void nbio_v7_0_sdma_doorbell_range(struct amdgpu_device *adev, int instance,
69 			bool use_doorbell, int doorbell_index, int doorbell_size)
70 {
71 	u32 reg = instance == 0 ? SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA0_DOORBELL_RANGE) :
72 			SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA1_DOORBELL_RANGE);
73 
74 	u32 doorbell_range = RREG32(reg);
75 
76 	if (use_doorbell) {
77 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, OFFSET, doorbell_index);
78 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, doorbell_size);
79 	} else
80 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 0);
81 
82 	WREG32(reg, doorbell_range);
83 }
84 
85 static void nbio_v7_0_vcn_doorbell_range(struct amdgpu_device *adev, bool use_doorbell,
86 					 int doorbell_index, int instance)
87 {
88 	u32 reg = SOC15_REG_OFFSET(NBIO, 0, mmBIF_MMSCH0_DOORBELL_RANGE);
89 
90 	u32 doorbell_range = RREG32(reg);
91 
92 	if (use_doorbell) {
93 		doorbell_range = REG_SET_FIELD(doorbell_range,
94 					       BIF_MMSCH0_DOORBELL_RANGE, OFFSET,
95 					       doorbell_index);
96 		doorbell_range = REG_SET_FIELD(doorbell_range,
97 					       BIF_MMSCH0_DOORBELL_RANGE, SIZE, 8);
98 	} else
99 		doorbell_range = REG_SET_FIELD(doorbell_range,
100 					       BIF_MMSCH0_DOORBELL_RANGE, SIZE, 0);
101 
102 	WREG32(reg, doorbell_range);
103 }
104 
105 static void nbio_v7_0_enable_doorbell_aperture(struct amdgpu_device *adev,
106 					       bool enable)
107 {
108 	WREG32_FIELD15(NBIO, 0, RCC_DOORBELL_APER_EN, BIF_DOORBELL_APER_EN, enable ? 1 : 0);
109 }
110 
111 static void nbio_v7_0_enable_doorbell_selfring_aperture(struct amdgpu_device *adev,
112 							bool enable)
113 {
114 
115 }
116 
117 static void nbio_v7_0_ih_doorbell_range(struct amdgpu_device *adev,
118 					bool use_doorbell, int doorbell_index)
119 {
120 	u32 ih_doorbell_range = RREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE);
121 
122 	if (use_doorbell) {
123 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, OFFSET, doorbell_index);
124 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 2);
125 	} else
126 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 0);
127 
128 	WREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE, ih_doorbell_range);
129 }
130 
131 static uint32_t nbio_7_0_read_syshub_ind_mmr(struct amdgpu_device *adev, uint32_t offset)
132 {
133 	uint32_t data;
134 
135 	WREG32_SOC15(NBIO, 0, mmSYSHUB_INDEX, offset);
136 	data = RREG32_SOC15(NBIO, 0, mmSYSHUB_DATA);
137 
138 	return data;
139 }
140 
141 static void nbio_7_0_write_syshub_ind_mmr(struct amdgpu_device *adev, uint32_t offset,
142 				       uint32_t data)
143 {
144 	WREG32_SOC15(NBIO, 0, mmSYSHUB_INDEX, offset);
145 	WREG32_SOC15(NBIO, 0, mmSYSHUB_DATA, data);
146 }
147 
148 static void nbio_v7_0_update_medium_grain_clock_gating(struct amdgpu_device *adev,
149 						       bool enable)
150 {
151 	uint32_t def, data;
152 
153 	/* NBIF_MGCG_CTRL_LCLK */
154 	def = data = RREG32_PCIE(smnNBIF_MGCG_CTRL_LCLK);
155 
156 	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG))
157 		data |= NBIF_MGCG_CTRL_LCLK__NBIF_MGCG_EN_LCLK_MASK;
158 	else
159 		data &= ~NBIF_MGCG_CTRL_LCLK__NBIF_MGCG_EN_LCLK_MASK;
160 
161 	if (def != data)
162 		WREG32_PCIE(smnNBIF_MGCG_CTRL_LCLK, data);
163 
164 	/* SYSHUB_MGCG_CTRL_SOCCLK */
165 	def = data = nbio_7_0_read_syshub_ind_mmr(adev, ixSYSHUB_MMREG_IND_SYSHUB_MGCG_CTRL_SOCCLK);
166 
167 	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG))
168 		data |= SYSHUB_MMREG_DIRECT_SYSHUB_MGCG_CTRL_SOCCLK__SYSHUB_MGCG_EN_SOCCLK_MASK;
169 	else
170 		data &= ~SYSHUB_MMREG_DIRECT_SYSHUB_MGCG_CTRL_SOCCLK__SYSHUB_MGCG_EN_SOCCLK_MASK;
171 
172 	if (def != data)
173 		nbio_7_0_write_syshub_ind_mmr(adev, ixSYSHUB_MMREG_IND_SYSHUB_MGCG_CTRL_SOCCLK, data);
174 
175 	/* SYSHUB_MGCG_CTRL_SHUBCLK */
176 	def = data = nbio_7_0_read_syshub_ind_mmr(adev, ixSYSHUB_MMREG_IND_SYSHUB_MGCG_CTRL_SHUBCLK);
177 
178 	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG))
179 		data |= SYSHUB_MMREG_DIRECT_SYSHUB_MGCG_CTRL_SHUBCLK__SYSHUB_MGCG_EN_SHUBCLK_MASK;
180 	else
181 		data &= ~SYSHUB_MMREG_DIRECT_SYSHUB_MGCG_CTRL_SHUBCLK__SYSHUB_MGCG_EN_SHUBCLK_MASK;
182 
183 	if (def != data)
184 		nbio_7_0_write_syshub_ind_mmr(adev, ixSYSHUB_MMREG_IND_SYSHUB_MGCG_CTRL_SHUBCLK, data);
185 }
186 
187 static void nbio_v7_0_update_medium_grain_light_sleep(struct amdgpu_device *adev,
188 						      bool enable)
189 {
190 	uint32_t def, data;
191 
192 	def = data = RREG32_PCIE(smnPCIE_CNTL2);
193 	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_LS)) {
194 		data |= (PCIE_CNTL2__SLV_MEM_LS_EN_MASK |
195 			 PCIE_CNTL2__MST_MEM_LS_EN_MASK |
196 			 PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK);
197 	} else {
198 		data &= ~(PCIE_CNTL2__SLV_MEM_LS_EN_MASK |
199 			  PCIE_CNTL2__MST_MEM_LS_EN_MASK |
200 			  PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK);
201 	}
202 
203 	if (def != data)
204 		WREG32_PCIE(smnPCIE_CNTL2, data);
205 }
206 
207 static void nbio_v7_0_get_clockgating_state(struct amdgpu_device *adev,
208 					    u64 *flags)
209 {
210 	int data;
211 
212 	/* AMD_CG_SUPPORT_BIF_MGCG */
213 	data = RREG32_PCIE(smnCPM_CONTROL);
214 	if (data & CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK)
215 		*flags |= AMD_CG_SUPPORT_BIF_MGCG;
216 
217 	/* AMD_CG_SUPPORT_BIF_LS */
218 	data = RREG32_PCIE(smnPCIE_CNTL2);
219 	if (data & PCIE_CNTL2__SLV_MEM_LS_EN_MASK)
220 		*flags |= AMD_CG_SUPPORT_BIF_LS;
221 }
222 
223 static void nbio_v7_0_ih_control(struct amdgpu_device *adev)
224 {
225 	u32 interrupt_cntl;
226 
227 	/* setup interrupt control */
228 	WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL2, adev->dummy_page_addr >> 8);
229 	interrupt_cntl = RREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL);
230 	/* INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=0 - dummy read disabled with msi, enabled without msi
231 	 * INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=1 - dummy read controlled by IH_DUMMY_RD_EN
232 	 */
233 	interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_DUMMY_RD_OVERRIDE, 0);
234 	/* INTERRUPT_CNTL__IH_REQ_NONSNOOP_EN_MASK=1 if ring is in non-cacheable memory, e.g., vram */
235 	interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_REQ_NONSNOOP_EN, 0);
236 	WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL, interrupt_cntl);
237 }
238 
239 static u32 nbio_v7_0_get_hdp_flush_req_offset(struct amdgpu_device *adev)
240 {
241 	return SOC15_REG_OFFSET(NBIO, 0, mmGPU_HDP_FLUSH_REQ);
242 }
243 
244 static u32 nbio_v7_0_get_hdp_flush_done_offset(struct amdgpu_device *adev)
245 {
246 	return SOC15_REG_OFFSET(NBIO, 0, mmGPU_HDP_FLUSH_DONE);
247 }
248 
249 static u32 nbio_v7_0_get_pcie_index_offset(struct amdgpu_device *adev)
250 {
251 	return SOC15_REG_OFFSET(NBIO, 0, mmPCIE_INDEX2);
252 }
253 
254 static u32 nbio_v7_0_get_pcie_data_offset(struct amdgpu_device *adev)
255 {
256 	return SOC15_REG_OFFSET(NBIO, 0, mmPCIE_DATA2);
257 }
258 
259 const struct nbio_hdp_flush_reg nbio_v7_0_hdp_flush_reg = {
260 	.ref_and_mask_cp0 = GPU_HDP_FLUSH_DONE__CP0_MASK,
261 	.ref_and_mask_cp1 = GPU_HDP_FLUSH_DONE__CP1_MASK,
262 	.ref_and_mask_cp2 = GPU_HDP_FLUSH_DONE__CP2_MASK,
263 	.ref_and_mask_cp3 = GPU_HDP_FLUSH_DONE__CP3_MASK,
264 	.ref_and_mask_cp4 = GPU_HDP_FLUSH_DONE__CP4_MASK,
265 	.ref_and_mask_cp5 = GPU_HDP_FLUSH_DONE__CP5_MASK,
266 	.ref_and_mask_cp6 = GPU_HDP_FLUSH_DONE__CP6_MASK,
267 	.ref_and_mask_cp7 = GPU_HDP_FLUSH_DONE__CP7_MASK,
268 	.ref_and_mask_cp8 = GPU_HDP_FLUSH_DONE__CP8_MASK,
269 	.ref_and_mask_cp9 = GPU_HDP_FLUSH_DONE__CP9_MASK,
270 	.ref_and_mask_sdma0 = GPU_HDP_FLUSH_DONE__SDMA0_MASK,
271 	.ref_and_mask_sdma1 = GPU_HDP_FLUSH_DONE__SDMA1_MASK,
272 };
273 
274 static void nbio_v7_0_init_registers(struct amdgpu_device *adev)
275 {
276 	if (amdgpu_sriov_vf(adev))
277 		adev->rmmio_remap.reg_offset =
278 			SOC15_REG_OFFSET(NBIO, 0, mmHDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
279 }
280 
281 const struct amdgpu_nbio_funcs nbio_v7_0_funcs = {
282 	.get_hdp_flush_req_offset = nbio_v7_0_get_hdp_flush_req_offset,
283 	.get_hdp_flush_done_offset = nbio_v7_0_get_hdp_flush_done_offset,
284 	.get_pcie_index_offset = nbio_v7_0_get_pcie_index_offset,
285 	.get_pcie_data_offset = nbio_v7_0_get_pcie_data_offset,
286 	.get_rev_id = nbio_v7_0_get_rev_id,
287 	.mc_access_enable = nbio_v7_0_mc_access_enable,
288 	.get_memsize = nbio_v7_0_get_memsize,
289 	.sdma_doorbell_range = nbio_v7_0_sdma_doorbell_range,
290 	.vcn_doorbell_range = nbio_v7_0_vcn_doorbell_range,
291 	.enable_doorbell_aperture = nbio_v7_0_enable_doorbell_aperture,
292 	.enable_doorbell_selfring_aperture = nbio_v7_0_enable_doorbell_selfring_aperture,
293 	.ih_doorbell_range = nbio_v7_0_ih_doorbell_range,
294 	.update_medium_grain_clock_gating = nbio_v7_0_update_medium_grain_clock_gating,
295 	.update_medium_grain_light_sleep = nbio_v7_0_update_medium_grain_light_sleep,
296 	.get_clockgating_state = nbio_v7_0_get_clockgating_state,
297 	.ih_control = nbio_v7_0_ih_control,
298 	.init_registers = nbio_v7_0_init_registers,
299 	.remap_hdp_registers = nbio_v7_0_remap_hdp_registers,
300 };
301