1 /*
2  * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20  * DEALINGS IN THE SOFTWARE.
21  */
22 #include "priv.h"
23 
24 #include <core/memory.h>
25 #include <subdev/acr.h>
26 
27 #include <nvfw/flcn.h>
28 #include <nvfw/pmu.h>
29 
30 static int
31 gm20b_pmu_acr_bootstrap_falcon_cb(void *priv, struct nvfw_falcon_msg *hdr)
32 {
33 	struct nv_pmu_acr_bootstrap_falcon_msg *msg =
34 		container_of(hdr, typeof(*msg), msg.hdr);
35 	return msg->falcon_id;
36 }
37 
38 int
39 gm20b_pmu_acr_bootstrap_falcon(struct nvkm_falcon *falcon,
40 			       enum nvkm_acr_lsf_id id)
41 {
42 	struct nvkm_pmu *pmu = container_of(falcon, typeof(*pmu), falcon);
43 	struct nv_pmu_acr_bootstrap_falcon_cmd cmd = {
44 		.cmd.hdr.unit_id = NV_PMU_UNIT_ACR,
45 		.cmd.hdr.size = sizeof(cmd),
46 		.cmd.cmd_type = NV_PMU_ACR_CMD_BOOTSTRAP_FALCON,
47 		.flags = NV_PMU_ACR_BOOTSTRAP_FALCON_FLAGS_RESET_YES,
48 		.falcon_id = id,
49 	};
50 	int ret;
51 
52 	ret = nvkm_falcon_cmdq_send(pmu->hpq, &cmd.cmd.hdr,
53 				    gm20b_pmu_acr_bootstrap_falcon_cb,
54 				    &pmu->subdev, msecs_to_jiffies(1000));
55 	if (ret >= 0) {
56 		if (ret != cmd.falcon_id)
57 			ret = -EIO;
58 		else
59 			ret = 0;
60 	}
61 
62 	return ret;
63 }
64 
65 void
66 gm20b_pmu_acr_bld_patch(struct nvkm_acr *acr, u32 bld, s64 adjust)
67 {
68 	struct loader_config hdr;
69 	u64 addr;
70 
71 	nvkm_robj(acr->wpr, bld, &hdr, sizeof(hdr));
72 	addr = ((u64)hdr.code_dma_base1 << 40 | hdr.code_dma_base << 8);
73 	hdr.code_dma_base  = lower_32_bits((addr + adjust) >> 8);
74 	hdr.code_dma_base1 = upper_32_bits((addr + adjust) >> 8);
75 	addr = ((u64)hdr.data_dma_base1 << 40 | hdr.data_dma_base << 8);
76 	hdr.data_dma_base  = lower_32_bits((addr + adjust) >> 8);
77 	hdr.data_dma_base1 = upper_32_bits((addr + adjust) >> 8);
78 	addr = ((u64)hdr.overlay_dma_base1 << 40 | hdr.overlay_dma_base << 8);
79 	hdr.overlay_dma_base  = lower_32_bits((addr + adjust) << 8);
80 	hdr.overlay_dma_base1 = upper_32_bits((addr + adjust) << 8);
81 	nvkm_wobj(acr->wpr, bld, &hdr, sizeof(hdr));
82 
83 	loader_config_dump(&acr->subdev, &hdr);
84 }
85 
86 void
87 gm20b_pmu_acr_bld_write(struct nvkm_acr *acr, u32 bld,
88 			struct nvkm_acr_lsfw *lsfw)
89 {
90 	const u64 base = lsfw->offset.img + lsfw->app_start_offset;
91 	const u64 code = (base + lsfw->app_resident_code_offset) >> 8;
92 	const u64 data = (base + lsfw->app_resident_data_offset) >> 8;
93 	const struct loader_config hdr = {
94 		.dma_idx = FALCON_DMAIDX_UCODE,
95 		.code_dma_base = lower_32_bits(code),
96 		.code_size_total = lsfw->app_size,
97 		.code_size_to_load = lsfw->app_resident_code_size,
98 		.code_entry_point = lsfw->app_imem_entry,
99 		.data_dma_base = lower_32_bits(data),
100 		.data_size = lsfw->app_resident_data_size,
101 		.overlay_dma_base = lower_32_bits(code),
102 		.argc = 1,
103 		.argv = lsfw->falcon->data.limit - sizeof(struct nv_pmu_args),
104 		.code_dma_base1 = upper_32_bits(code),
105 		.data_dma_base1 = upper_32_bits(data),
106 		.overlay_dma_base1 = upper_32_bits(code),
107 	};
108 
109 	nvkm_wobj(acr->wpr, bld, &hdr, sizeof(hdr));
110 }
111 
112 static const struct nvkm_acr_lsf_func
113 gm20b_pmu_acr = {
114 	.flags = NVKM_ACR_LSF_DMACTL_REQ_CTX,
115 	.bld_size = sizeof(struct loader_config),
116 	.bld_write = gm20b_pmu_acr_bld_write,
117 	.bld_patch = gm20b_pmu_acr_bld_patch,
118 	.bootstrap_falcons = BIT_ULL(NVKM_ACR_LSF_PMU) |
119 			     BIT_ULL(NVKM_ACR_LSF_FECS) |
120 			     BIT_ULL(NVKM_ACR_LSF_GPCCS),
121 	.bootstrap_falcon = gm20b_pmu_acr_bootstrap_falcon,
122 };
123 
124 static int
125 gm20b_pmu_acr_init_wpr_callback(void *priv, struct nvfw_falcon_msg *hdr)
126 {
127 	struct nv_pmu_acr_init_wpr_region_msg *msg =
128 		container_of(hdr, typeof(*msg), msg.hdr);
129 	struct nvkm_pmu *pmu = priv;
130 	struct nvkm_subdev *subdev = &pmu->subdev;
131 
132 	if (msg->error_code) {
133 		nvkm_error(subdev, "ACR WPR init failure: %d\n",
134 			   msg->error_code);
135 		return -EINVAL;
136 	}
137 
138 	nvkm_debug(subdev, "ACR WPR init complete\n");
139 	complete_all(&pmu->wpr_ready);
140 	return 0;
141 }
142 
143 static int
144 gm20b_pmu_acr_init_wpr(struct nvkm_pmu *pmu)
145 {
146 	struct nv_pmu_acr_init_wpr_region_cmd cmd = {
147 		.cmd.hdr.unit_id = NV_PMU_UNIT_ACR,
148 		.cmd.hdr.size = sizeof(cmd),
149 		.cmd.cmd_type = NV_PMU_ACR_CMD_INIT_WPR_REGION,
150 		.region_id = 1,
151 		.wpr_offset = 0,
152 	};
153 
154 	return nvkm_falcon_cmdq_send(pmu->hpq, &cmd.cmd.hdr,
155 				     gm20b_pmu_acr_init_wpr_callback, pmu, 0);
156 }
157 
158 static int
159 gm20b_pmu_initmsg(struct nvkm_pmu *pmu)
160 {
161 	struct nv_pmu_init_msg msg;
162 	int ret;
163 
164 	ret = nvkm_falcon_msgq_recv_initmsg(pmu->msgq, &msg, sizeof(msg));
165 	if (ret)
166 		return ret;
167 
168 	if (msg.hdr.unit_id != NV_PMU_UNIT_INIT ||
169 	    msg.msg_type != NV_PMU_INIT_MSG_INIT)
170 		return -EINVAL;
171 
172 	nvkm_falcon_cmdq_init(pmu->hpq, msg.queue_info[0].index,
173 					msg.queue_info[0].offset,
174 					msg.queue_info[0].size);
175 	nvkm_falcon_cmdq_init(pmu->lpq, msg.queue_info[1].index,
176 					msg.queue_info[1].offset,
177 					msg.queue_info[1].size);
178 	nvkm_falcon_msgq_init(pmu->msgq, msg.queue_info[4].index,
179 					 msg.queue_info[4].offset,
180 					 msg.queue_info[4].size);
181 	return gm20b_pmu_acr_init_wpr(pmu);
182 }
183 
184 static void
185 gm20b_pmu_recv(struct nvkm_pmu *pmu)
186 {
187 	if (!pmu->initmsg_received) {
188 		int ret = pmu->func->initmsg(pmu);
189 		if (ret) {
190 			nvkm_error(&pmu->subdev, "error parsing init message: %d\n", ret);
191 			return;
192 		}
193 
194 		pmu->initmsg_received = true;
195 	}
196 
197 	nvkm_falcon_msgq_recv(pmu->msgq);
198 }
199 
200 static void
201 gm20b_pmu_fini(struct nvkm_pmu *pmu)
202 {
203 	/*TODO: shutdown RTOS. */
204 
205 	flush_work(&pmu->recv.work);
206 	nvkm_falcon_cmdq_fini(pmu->lpq);
207 	nvkm_falcon_cmdq_fini(pmu->hpq);
208 
209 	reinit_completion(&pmu->wpr_ready);
210 
211 	nvkm_falcon_put(&pmu->falcon, &pmu->subdev);
212 }
213 
214 static int
215 gm20b_pmu_init(struct nvkm_pmu *pmu)
216 {
217 	struct nvkm_falcon *falcon = &pmu->falcon;
218 	struct nv_pmu_args args = { .secure_mode = true };
219 	u32 addr_args = falcon->data.limit - sizeof(args);
220 	int ret;
221 
222 	ret = nvkm_falcon_get(&pmu->falcon, &pmu->subdev);
223 	if (ret)
224 		return ret;
225 
226 	pmu->initmsg_received = false;
227 
228 	nvkm_falcon_load_dmem(falcon, &args, addr_args, sizeof(args), 0);
229 	nvkm_falcon_start(falcon);
230 	return 0;
231 }
232 
233 const struct nvkm_pmu_func
234 gm20b_pmu = {
235 	.flcn = &gm200_pmu_flcn,
236 	.init = gm20b_pmu_init,
237 	.fini = gm20b_pmu_fini,
238 	.intr = gt215_pmu_intr,
239 	.recv = gm20b_pmu_recv,
240 	.initmsg = gm20b_pmu_initmsg,
241 	.reset = gf100_pmu_reset,
242 };
243 
244 #if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC)
245 MODULE_FIRMWARE("nvidia/gm20b/pmu/desc.bin");
246 MODULE_FIRMWARE("nvidia/gm20b/pmu/image.bin");
247 MODULE_FIRMWARE("nvidia/gm20b/pmu/sig.bin");
248 #endif
249 
250 int
251 gm20b_pmu_load(struct nvkm_pmu *pmu, int ver, const struct nvkm_pmu_fwif *fwif)
252 {
253 	return nvkm_acr_lsfw_load_sig_image_desc(&pmu->subdev, &pmu->falcon,
254 						 NVKM_ACR_LSF_PMU, "pmu/",
255 						 ver, fwif->acr);
256 }
257 
258 static const struct nvkm_pmu_fwif
259 gm20b_pmu_fwif[] = {
260 	{  0, gm20b_pmu_load, &gm20b_pmu, &gm20b_pmu_acr },
261 	{ -1, gm200_pmu_nofw, &gm20b_pmu },
262 	{}
263 };
264 
265 int
266 gm20b_pmu_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
267 	      struct nvkm_pmu **ppmu)
268 {
269 	return nvkm_pmu_new_(gm20b_pmu_fwif, device, type, inst, ppmu);
270 }
271