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  * Author: Huang Rui
23  *
24  */
25 
26 #include <linux/firmware.h>
27 #include <linux/module.h>
28 #include <linux/pci.h>
29 
30 #include "amdgpu.h"
31 #include "amdgpu_psp.h"
32 #include "amdgpu_ucode.h"
33 #include "soc15_common.h"
34 #include "psp_v10_0.h"
35 
36 #include "mp/mp_10_0_offset.h"
37 #include "gc/gc_9_1_offset.h"
38 #include "sdma0/sdma0_4_1_offset.h"
39 
40 MODULE_FIRMWARE("amdgpu/raven_asd.bin");
41 MODULE_FIRMWARE("amdgpu/picasso_asd.bin");
42 MODULE_FIRMWARE("amdgpu/raven2_asd.bin");
43 MODULE_FIRMWARE("amdgpu/picasso_ta.bin");
44 MODULE_FIRMWARE("amdgpu/raven2_ta.bin");
45 MODULE_FIRMWARE("amdgpu/raven_ta.bin");
46 
47 static int psp_v10_0_init_microcode(struct psp_context *psp)
48 {
49 	struct amdgpu_device *adev = psp->adev;
50 	const char *chip_name;
51 	char fw_name[30];
52 	int err = 0;
53 	const struct ta_firmware_header_v1_0 *ta_hdr;
54 	DRM_DEBUG("\n");
55 
56 	switch (adev->asic_type) {
57 	case CHIP_RAVEN:
58 		if (adev->apu_flags & AMD_APU_IS_RAVEN2)
59 			chip_name = "raven2";
60 		else if (adev->apu_flags & AMD_APU_IS_PICASSO)
61 			chip_name = "picasso";
62 		else
63 			chip_name = "raven";
64 		break;
65 	default: BUG();
66 	}
67 
68 	err = psp_init_asd_microcode(psp, chip_name);
69 	if (err)
70 		goto out;
71 
72 	snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_ta.bin", chip_name);
73 	err = request_firmware(&adev->psp.ta_fw, fw_name, adev->dev);
74 	if (err) {
75 		release_firmware(adev->psp.ta_fw);
76 		adev->psp.ta_fw = NULL;
77 		dev_info(adev->dev,
78 			 "psp v10.0: Failed to load firmware \"%s\"\n",
79 			 fw_name);
80 	} else {
81 		err = amdgpu_ucode_validate(adev->psp.ta_fw);
82 		if (err)
83 			goto out2;
84 
85 		ta_hdr = (const struct ta_firmware_header_v1_0 *)
86 				 adev->psp.ta_fw->data;
87 		adev->psp.hdcp.feature_version =
88 			le32_to_cpu(ta_hdr->hdcp.fw_version);
89 		adev->psp.hdcp.size_bytes =
90 			le32_to_cpu(ta_hdr->hdcp.size_bytes);
91 		adev->psp.hdcp.start_addr =
92 			(uint8_t *)ta_hdr +
93 			le32_to_cpu(ta_hdr->header.ucode_array_offset_bytes);
94 
95 		adev->psp.dtm.feature_version =
96 			le32_to_cpu(ta_hdr->dtm.fw_version);
97 		adev->psp.dtm.size_bytes =
98 			le32_to_cpu(ta_hdr->dtm.size_bytes);
99 		adev->psp.dtm.start_addr =
100 			(uint8_t *)adev->psp.hdcp.start_addr +
101 			le32_to_cpu(ta_hdr->dtm.offset_bytes);
102 
103 		adev->psp.securedisplay.feature_version =
104 			le32_to_cpu(ta_hdr->securedisplay.fw_version);
105 		adev->psp.securedisplay.size_bytes =
106 			le32_to_cpu(ta_hdr->securedisplay.size_bytes);
107 		adev->psp.securedisplay.start_addr =
108 			(uint8_t *)adev->psp.hdcp.start_addr +
109 			le32_to_cpu(ta_hdr->securedisplay.offset_bytes);
110 
111 		adev->psp.ta_fw_version = le32_to_cpu(ta_hdr->header.ucode_version);
112 	}
113 
114 	return 0;
115 
116 out2:
117 	release_firmware(adev->psp.ta_fw);
118 	adev->psp.ta_fw = NULL;
119 out:
120 	if (err) {
121 		dev_err(adev->dev,
122 			"psp v10.0: Failed to load firmware \"%s\"\n",
123 			fw_name);
124 	}
125 
126 	return err;
127 }
128 
129 static int psp_v10_0_ring_init(struct psp_context *psp,
130 			       enum psp_ring_type ring_type)
131 {
132 	int ret = 0;
133 	struct psp_ring *ring;
134 	struct amdgpu_device *adev = psp->adev;
135 
136 	ring = &psp->km_ring;
137 
138 	ring->ring_type = ring_type;
139 
140 	/* allocate 4k Page of Local Frame Buffer memory for ring */
141 	ring->ring_size = 0x1000;
142 	ret = amdgpu_bo_create_kernel(adev, ring->ring_size, PAGE_SIZE,
143 				      AMDGPU_GEM_DOMAIN_VRAM,
144 				      &adev->firmware.rbuf,
145 				      &ring->ring_mem_mc_addr,
146 				      (void **)&ring->ring_mem);
147 	if (ret) {
148 		ring->ring_size = 0;
149 		return ret;
150 	}
151 
152 	return 0;
153 }
154 
155 static int psp_v10_0_ring_create(struct psp_context *psp,
156 				 enum psp_ring_type ring_type)
157 {
158 	int ret = 0;
159 	unsigned int psp_ring_reg = 0;
160 	struct psp_ring *ring = &psp->km_ring;
161 	struct amdgpu_device *adev = psp->adev;
162 
163 	/* Write low address of the ring to C2PMSG_69 */
164 	psp_ring_reg = lower_32_bits(ring->ring_mem_mc_addr);
165 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_69, psp_ring_reg);
166 	/* Write high address of the ring to C2PMSG_70 */
167 	psp_ring_reg = upper_32_bits(ring->ring_mem_mc_addr);
168 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_70, psp_ring_reg);
169 	/* Write size of ring to C2PMSG_71 */
170 	psp_ring_reg = ring->ring_size;
171 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_71, psp_ring_reg);
172 	/* Write the ring initialization command to C2PMSG_64 */
173 	psp_ring_reg = ring_type;
174 	psp_ring_reg = psp_ring_reg << 16;
175 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_64, psp_ring_reg);
176 
177 	/* There might be handshake issue with hardware which needs delay */
178 	mdelay(20);
179 
180 	/* Wait for response flag (bit 31) in C2PMSG_64 */
181 	ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_64),
182 			   0x80000000, 0x8000FFFF, false);
183 
184 	return ret;
185 }
186 
187 static int psp_v10_0_ring_stop(struct psp_context *psp,
188 			       enum psp_ring_type ring_type)
189 {
190 	int ret = 0;
191 	unsigned int psp_ring_reg = 0;
192 	struct amdgpu_device *adev = psp->adev;
193 
194 	/* Write the ring destroy command to C2PMSG_64 */
195 	psp_ring_reg = 3 << 16;
196 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_64, psp_ring_reg);
197 
198 	/* There might be handshake issue with hardware which needs delay */
199 	mdelay(20);
200 
201 	/* Wait for response flag (bit 31) in C2PMSG_64 */
202 	ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_64),
203 			   0x80000000, 0x80000000, false);
204 
205 	return ret;
206 }
207 
208 static int psp_v10_0_ring_destroy(struct psp_context *psp,
209 				  enum psp_ring_type ring_type)
210 {
211 	int ret = 0;
212 	struct psp_ring *ring = &psp->km_ring;
213 	struct amdgpu_device *adev = psp->adev;
214 
215 	ret = psp_v10_0_ring_stop(psp, ring_type);
216 	if (ret)
217 		DRM_ERROR("Fail to stop psp ring\n");
218 
219 	amdgpu_bo_free_kernel(&adev->firmware.rbuf,
220 			      &ring->ring_mem_mc_addr,
221 			      (void **)&ring->ring_mem);
222 
223 	return ret;
224 }
225 
226 static int psp_v10_0_mode1_reset(struct psp_context *psp)
227 {
228 	DRM_INFO("psp mode 1 reset not supported now! \n");
229 	return -EINVAL;
230 }
231 
232 static uint32_t psp_v10_0_ring_get_wptr(struct psp_context *psp)
233 {
234 	struct amdgpu_device *adev = psp->adev;
235 
236 	return RREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_67);
237 }
238 
239 static void psp_v10_0_ring_set_wptr(struct psp_context *psp, uint32_t value)
240 {
241 	struct amdgpu_device *adev = psp->adev;
242 
243 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_67, value);
244 }
245 
246 static const struct psp_funcs psp_v10_0_funcs = {
247 	.init_microcode = psp_v10_0_init_microcode,
248 	.ring_init = psp_v10_0_ring_init,
249 	.ring_create = psp_v10_0_ring_create,
250 	.ring_stop = psp_v10_0_ring_stop,
251 	.ring_destroy = psp_v10_0_ring_destroy,
252 	.mode1_reset = psp_v10_0_mode1_reset,
253 	.ring_get_wptr = psp_v10_0_ring_get_wptr,
254 	.ring_set_wptr = psp_v10_0_ring_set_wptr,
255 };
256 
257 void psp_v10_0_set_psp_funcs(struct psp_context *psp)
258 {
259 	psp->funcs = &psp_v10_0_funcs;
260 }
261