1 /*
2 * Copyright 2023 Red Hat 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 #include "priv.h"
23
24 #include <subdev/gsp.h>
25
26 #include <nvhw/drf.h>
27
28 #include <nvrm/nvtypes.h>
29 #include <nvrm/535.113.01/common/sdk/nvidia/inc/class/cl84a0.h>
30 #include <nvrm/535.113.01/common/sdk/nvidia/inc/ctrl/ctrl2080/ctrl2080internal.h>
31 #include <nvrm/535.113.01/common/sdk/nvidia/inc/nvos.h>
32 #include <nvrm/535.113.01/nvidia/generated/g_fbsr_nvoc.h>
33 #include <nvrm/535.113.01/nvidia/generated/g_rpc-structures.h>
34 #include <nvrm/535.113.01/nvidia/kernel/inc/vgpu/rpc_global_enums.h>
35
36 struct fbsr_item {
37 const char *type;
38 u64 addr;
39 u64 size;
40
41 struct list_head head;
42 };
43
44 struct fbsr {
45 struct list_head items;
46
47 u64 size;
48 int regions;
49
50 struct nvkm_gsp_client client;
51 struct nvkm_gsp_device device;
52
53 u64 hmemory;
54 u64 sys_offset;
55 };
56
57 static int
fbsr_memlist(struct nvkm_gsp_device * device,u32 handle,enum nvkm_memory_target aper,u64 phys,u64 size,struct sg_table * sgt,struct nvkm_gsp_object * object)58 fbsr_memlist(struct nvkm_gsp_device *device, u32 handle, enum nvkm_memory_target aper,
59 u64 phys, u64 size, struct sg_table *sgt, struct nvkm_gsp_object *object)
60 {
61 struct nvkm_gsp_client *client = device->object.client;
62 struct nvkm_gsp *gsp = client->gsp;
63 const u32 pages = size / GSP_PAGE_SIZE;
64 rpc_alloc_memory_v13_01 *rpc;
65 int ret;
66
67 rpc = nvkm_gsp_rpc_get(gsp, NV_VGPU_MSG_FUNCTION_ALLOC_MEMORY,
68 sizeof(*rpc) + pages * sizeof(rpc->pteDesc.pte_pde[0]));
69 if (IS_ERR(rpc))
70 return PTR_ERR(rpc);
71
72 rpc->hClient = client->object.handle;
73 rpc->hDevice = device->object.handle;
74 rpc->hMemory = handle;
75 if (aper == NVKM_MEM_TARGET_HOST) {
76 rpc->hClass = NV01_MEMORY_LIST_SYSTEM;
77 rpc->flags = NVDEF(NVOS02, FLAGS, PHYSICALITY, NONCONTIGUOUS) |
78 NVDEF(NVOS02, FLAGS, LOCATION, PCI) |
79 NVDEF(NVOS02, FLAGS, MAPPING, NO_MAP);
80 } else {
81 rpc->hClass = NV01_MEMORY_LIST_FBMEM;
82 rpc->flags = NVDEF(NVOS02, FLAGS, PHYSICALITY, CONTIGUOUS) |
83 NVDEF(NVOS02, FLAGS, LOCATION, VIDMEM) |
84 NVDEF(NVOS02, FLAGS, MAPPING, NO_MAP);
85 rpc->format = 6; /* NV_MMU_PTE_KIND_GENERIC_MEMORY */
86 }
87 rpc->pteAdjust = 0;
88 rpc->length = size;
89 rpc->pageCount = pages;
90 rpc->pteDesc.idr = 0;
91 rpc->pteDesc.reserved1 = 0;
92 rpc->pteDesc.length = pages;
93
94 if (sgt) {
95 struct scatterlist *sgl;
96 int pte = 0, idx;
97
98 for_each_sgtable_dma_sg(sgt, sgl, idx) {
99 for (int i = 0; i < sg_dma_len(sgl) / GSP_PAGE_SIZE; i++)
100 rpc->pteDesc.pte_pde[pte++].pte = (sg_dma_address(sgl) >> 12) + i;
101
102 }
103 } else {
104 for (int i = 0; i < pages; i++)
105 rpc->pteDesc.pte_pde[i].pte = (phys >> 12) + i;
106 }
107
108 ret = nvkm_gsp_rpc_wr(gsp, rpc, true);
109 if (ret)
110 return ret;
111
112 object->client = device->object.client;
113 object->parent = &device->object;
114 object->handle = handle;
115 return 0;
116 }
117
118 static int
fbsr_send(struct fbsr * fbsr,struct fbsr_item * item)119 fbsr_send(struct fbsr *fbsr, struct fbsr_item *item)
120 {
121 NV2080_CTRL_INTERNAL_FBSR_SEND_REGION_INFO_PARAMS *ctrl;
122 struct nvkm_gsp *gsp = fbsr->client.gsp;
123 struct nvkm_gsp_object memlist;
124 int ret;
125
126 ret = fbsr_memlist(&fbsr->device, fbsr->hmemory, NVKM_MEM_TARGET_VRAM,
127 item->addr, item->size, NULL, &memlist);
128 if (ret)
129 return ret;
130
131 ctrl = nvkm_gsp_rm_ctrl_get(&gsp->internal.device.subdevice,
132 NV2080_CTRL_CMD_INTERNAL_FBSR_SEND_REGION_INFO,
133 sizeof(*ctrl));
134 if (IS_ERR(ctrl)) {
135 ret = PTR_ERR(ctrl);
136 goto done;
137 }
138
139 ctrl->fbsrType = FBSR_TYPE_DMA;
140 ctrl->hClient = fbsr->client.object.handle;
141 ctrl->hVidMem = fbsr->hmemory++;
142 ctrl->vidOffset = 0;
143 ctrl->sysOffset = fbsr->sys_offset;
144 ctrl->size = item->size;
145
146 ret = nvkm_gsp_rm_ctrl_wr(&gsp->internal.device.subdevice, ctrl);
147 done:
148 nvkm_gsp_rm_free(&memlist);
149 if (ret)
150 return ret;
151
152 fbsr->sys_offset += item->size;
153 return 0;
154 }
155
156 static int
fbsr_init(struct fbsr * fbsr,struct sg_table * sgt,u64 items_size)157 fbsr_init(struct fbsr *fbsr, struct sg_table *sgt, u64 items_size)
158 {
159 NV2080_CTRL_INTERNAL_FBSR_INIT_PARAMS *ctrl;
160 struct nvkm_gsp *gsp = fbsr->client.gsp;
161 struct nvkm_gsp_object memlist;
162 int ret;
163
164 ret = fbsr_memlist(&fbsr->device, fbsr->hmemory, NVKM_MEM_TARGET_HOST,
165 0, fbsr->size, sgt, &memlist);
166 if (ret)
167 return ret;
168
169 ctrl = nvkm_gsp_rm_ctrl_get(&gsp->internal.device.subdevice,
170 NV2080_CTRL_CMD_INTERNAL_FBSR_INIT, sizeof(*ctrl));
171 if (IS_ERR(ctrl))
172 return PTR_ERR(ctrl);
173
174 ctrl->fbsrType = FBSR_TYPE_DMA;
175 ctrl->numRegions = fbsr->regions;
176 ctrl->hClient = fbsr->client.object.handle;
177 ctrl->hSysMem = fbsr->hmemory++;
178 ctrl->gspFbAllocsSysOffset = items_size;
179
180 ret = nvkm_gsp_rm_ctrl_wr(&gsp->internal.device.subdevice, ctrl);
181 if (ret)
182 return ret;
183
184 nvkm_gsp_rm_free(&memlist);
185 return 0;
186 }
187
188 static bool
fbsr_vram(struct fbsr * fbsr,const char * type,u64 addr,u64 size)189 fbsr_vram(struct fbsr *fbsr, const char *type, u64 addr, u64 size)
190 {
191 struct fbsr_item *item;
192
193 if (!(item = kzalloc(sizeof(*item), GFP_KERNEL)))
194 return false;
195
196 item->type = type;
197 item->addr = addr;
198 item->size = size;
199 list_add_tail(&item->head, &fbsr->items);
200 return true;
201 }
202
203 static bool
fbsr_inst(struct fbsr * fbsr,const char * type,struct nvkm_memory * memory)204 fbsr_inst(struct fbsr *fbsr, const char *type, struct nvkm_memory *memory)
205 {
206 return fbsr_vram(fbsr, type, nvkm_memory_addr(memory), nvkm_memory_size(memory));
207 }
208
209 static void
r535_instmem_resume(struct nvkm_instmem * imem)210 r535_instmem_resume(struct nvkm_instmem *imem)
211 {
212 /* RM has restored VRAM contents already, so just need to free the sysmem buffer. */
213 if (imem->rm.fbsr_valid) {
214 nvkm_gsp_sg_free(imem->subdev.device, &imem->rm.fbsr);
215 imem->rm.fbsr_valid = false;
216 }
217 }
218
219 static int
r535_instmem_suspend(struct nvkm_instmem * imem)220 r535_instmem_suspend(struct nvkm_instmem *imem)
221 {
222 struct nvkm_subdev *subdev = &imem->subdev;
223 struct nvkm_device *device = subdev->device;
224 struct nvkm_gsp *gsp = device->gsp;
225 struct nvkm_instobj *iobj;
226 struct fbsr fbsr = {};
227 struct fbsr_item *item, *temp;
228 u64 items_size;
229 int ret;
230
231 INIT_LIST_HEAD(&fbsr.items);
232 fbsr.hmemory = 0xcaf00003;
233
234 /* Create a list of all regions we need RM to save during suspend. */
235 list_for_each_entry(iobj, &imem->list, head) {
236 if (iobj->preserve) {
237 if (!fbsr_inst(&fbsr, "inst", &iobj->memory))
238 return -ENOMEM;
239 }
240 }
241
242 list_for_each_entry(iobj, &imem->boot, head) {
243 if (!fbsr_inst(&fbsr, "boot", &iobj->memory))
244 return -ENOMEM;
245 }
246
247 if (!fbsr_vram(&fbsr, "gsp-non-wpr", gsp->fb.heap.addr, gsp->fb.heap.size))
248 return -ENOMEM;
249
250 /* Determine memory requirements. */
251 list_for_each_entry(item, &fbsr.items, head) {
252 nvkm_debug(subdev, "fbsr: %016llx %016llx %s\n",
253 item->addr, item->size, item->type);
254 fbsr.size += item->size;
255 fbsr.regions++;
256 }
257
258 items_size = fbsr.size;
259 nvkm_debug(subdev, "fbsr: %d regions (0x%llx bytes)\n", fbsr.regions, items_size);
260
261 fbsr.size += gsp->fb.rsvd_size;
262 fbsr.size += gsp->fb.bios.vga_workspace.size;
263 nvkm_debug(subdev, "fbsr: size: 0x%llx bytes\n", fbsr.size);
264
265 ret = nvkm_gsp_sg(gsp->subdev.device, fbsr.size, &imem->rm.fbsr);
266 if (ret)
267 goto done;
268
269 /* Tell RM about the sysmem which will hold VRAM contents across suspend. */
270 ret = nvkm_gsp_client_device_ctor(gsp, &fbsr.client, &fbsr.device);
271 if (ret)
272 goto done_sgt;
273
274 ret = fbsr_init(&fbsr, &imem->rm.fbsr, items_size);
275 if (WARN_ON(ret))
276 goto done_sgt;
277
278 /* Send VRAM regions that need saving. */
279 list_for_each_entry(item, &fbsr.items, head) {
280 ret = fbsr_send(&fbsr, item);
281 if (WARN_ON(ret))
282 goto done_sgt;
283 }
284
285 imem->rm.fbsr_valid = true;
286
287 /* Cleanup everything except the sysmem backup, which will be removed after resume. */
288 done_sgt:
289 if (ret) /* ... unless we failed already. */
290 nvkm_gsp_sg_free(device, &imem->rm.fbsr);
291 done:
292 list_for_each_entry_safe(item, temp, &fbsr.items, head) {
293 list_del(&item->head);
294 kfree(item);
295 }
296
297 nvkm_gsp_device_dtor(&fbsr.device);
298 nvkm_gsp_client_dtor(&fbsr.client);
299 return ret;
300 }
301
302 static void *
r535_instmem_dtor(struct nvkm_instmem * imem)303 r535_instmem_dtor(struct nvkm_instmem *imem)
304 {
305 kfree(imem->func);
306 return imem;
307 }
308
309 int
r535_instmem_new(const struct nvkm_instmem_func * hw,struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_instmem ** pinstmem)310 r535_instmem_new(const struct nvkm_instmem_func *hw,
311 struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
312 struct nvkm_instmem **pinstmem)
313 {
314 struct nvkm_instmem_func *rm;
315 int ret;
316
317 if (!(rm = kzalloc(sizeof(*rm), GFP_KERNEL)))
318 return -ENOMEM;
319
320 rm->dtor = r535_instmem_dtor;
321 rm->fini = hw->fini;
322 rm->suspend = r535_instmem_suspend;
323 rm->resume = r535_instmem_resume;
324 rm->memory_new = hw->memory_new;
325 rm->memory_wrap = hw->memory_wrap;
326 rm->zero = false;
327
328 ret = nv50_instmem_new_(rm, device, type, inst, pinstmem);
329 if (ret)
330 kfree(rm);
331
332 return ret;
333 }
334