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f6f9279f SK |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // Copyright (c) 2011-2018, The Linux Foundation. All rights reserved. | |
3 | // Copyright (c) 2018, Linaro Limited | |
4 | ||
c68cfb71 | 5 | #include <linux/completion.h> |
f6f9279f | 6 | #include <linux/device.h> |
c68cfb71 | 7 | #include <linux/dma-buf.h> |
f6f9279f | 8 | #include <linux/dma-mapping.h> |
265751a5 | 9 | #include <linux/dma-resv.h> |
f6f9279f SK |
10 | #include <linux/idr.h> |
11 | #include <linux/list.h> | |
12 | #include <linux/miscdevice.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/of_address.h> | |
15 | #include <linux/of.h> | |
25e8dfb8 | 16 | #include <linux/sort.h> |
f6f9279f SK |
17 | #include <linux/of_platform.h> |
18 | #include <linux/rpmsg.h> | |
19 | #include <linux/scatterlist.h> | |
20 | #include <linux/slab.h> | |
e90d9119 | 21 | #include <linux/qcom_scm.h> |
c68cfb71 | 22 | #include <uapi/misc/fastrpc.h> |
1ce91d45 | 23 | #include <linux/of_reserved_mem.h> |
f6f9279f SK |
24 | |
25 | #define ADSP_DOMAIN_ID (0) | |
26 | #define MDSP_DOMAIN_ID (1) | |
27 | #define SDSP_DOMAIN_ID (2) | |
28 | #define CDSP_DOMAIN_ID (3) | |
29 | #define FASTRPC_DEV_MAX 4 /* adsp, mdsp, slpi, cdsp*/ | |
689a2d9f | 30 | #define FASTRPC_MAX_SESSIONS 14 |
e90d9119 | 31 | #define FASTRPC_MAX_VMIDS 16 |
c68cfb71 SK |
32 | #define FASTRPC_ALIGN 128 |
33 | #define FASTRPC_MAX_FDLIST 16 | |
34 | #define FASTRPC_MAX_CRCLIST 64 | |
35 | #define FASTRPC_PHYS(p) ((p) & 0xffffffff) | |
f6f9279f | 36 | #define FASTRPC_CTX_MAX (256) |
d73f71c7 | 37 | #define FASTRPC_INIT_HANDLE 1 |
6c16fd8b | 38 | #define FASTRPC_DSP_UTILITIES_HANDLE 2 |
f6f9279f | 39 | #define FASTRPC_CTXID_MASK (0xFF0) |
efcd2390 | 40 | #define INIT_FILELEN_MAX (2 * 1024 * 1024) |
08715610 | 41 | #define INIT_FILE_NAMELEN_MAX (128) |
f6f9279f | 42 | #define FASTRPC_DEVICE_NAME "fastrpc" |
08715610 AV |
43 | |
44 | /* Add memory to static PD pool, protection thru XPU */ | |
45 | #define ADSP_MMAP_HEAP_ADDR 4 | |
46 | /* MAP static DMA buffer on DSP User PD */ | |
47 | #define ADSP_MMAP_DMA_BUFFER 6 | |
48 | /* Add memory to static PD pool protection thru hypervisor */ | |
49 | #define ADSP_MMAP_REMOTE_HEAP_ADDR 8 | |
50 | /* Add memory to userPD pool, for user heap */ | |
2419e55e | 51 | #define ADSP_MMAP_ADD_PAGES 0x1000 |
08715610 AV |
52 | /* Add memory to userPD pool, for LLC heap */ |
53 | #define ADSP_MMAP_ADD_PAGES_LLC 0x3000, | |
54 | ||
6c16fd8b J |
55 | #define DSP_UNSUPPORTED_API (0x80000414) |
56 | /* MAX NUMBER of DSP ATTRIBUTES SUPPORTED */ | |
57 | #define FASTRPC_MAX_DSP_ATTRIBUTES (256) | |
58 | #define FASTRPC_MAX_DSP_ATTRIBUTES_LEN (sizeof(u32) * FASTRPC_MAX_DSP_ATTRIBUTES) | |
f6f9279f | 59 | |
c68cfb71 SK |
60 | /* Retrives number of input buffers from the scalars parameter */ |
61 | #define REMOTE_SCALARS_INBUFS(sc) (((sc) >> 16) & 0x0ff) | |
62 | ||
63 | /* Retrives number of output buffers from the scalars parameter */ | |
64 | #define REMOTE_SCALARS_OUTBUFS(sc) (((sc) >> 8) & 0x0ff) | |
65 | ||
66 | /* Retrives number of input handles from the scalars parameter */ | |
67 | #define REMOTE_SCALARS_INHANDLES(sc) (((sc) >> 4) & 0x0f) | |
68 | ||
69 | /* Retrives number of output handles from the scalars parameter */ | |
70 | #define REMOTE_SCALARS_OUTHANDLES(sc) ((sc) & 0x0f) | |
71 | ||
72 | #define REMOTE_SCALARS_LENGTH(sc) (REMOTE_SCALARS_INBUFS(sc) + \ | |
73 | REMOTE_SCALARS_OUTBUFS(sc) + \ | |
74 | REMOTE_SCALARS_INHANDLES(sc)+ \ | |
75 | REMOTE_SCALARS_OUTHANDLES(sc)) | |
76 | #define FASTRPC_BUILD_SCALARS(attr, method, in, out, oin, oout) \ | |
77 | (((attr & 0x07) << 29) | \ | |
78 | ((method & 0x1f) << 24) | \ | |
79 | ((in & 0xff) << 16) | \ | |
80 | ((out & 0xff) << 8) | \ | |
81 | ((oin & 0x0f) << 4) | \ | |
82 | (oout & 0x0f)) | |
83 | ||
84 | #define FASTRPC_SCALARS(method, in, out) \ | |
85 | FASTRPC_BUILD_SCALARS(0, method, in, out, 0, 0) | |
86 | ||
d73f71c7 | 87 | #define FASTRPC_CREATE_PROCESS_NARGS 6 |
08715610 | 88 | #define FASTRPC_CREATE_STATIC_PROCESS_NARGS 3 |
d73f71c7 SK |
89 | /* Remote Method id table */ |
90 | #define FASTRPC_RMID_INIT_ATTACH 0 | |
91 | #define FASTRPC_RMID_INIT_RELEASE 1 | |
2419e55e JRO |
92 | #define FASTRPC_RMID_INIT_MMAP 4 |
93 | #define FASTRPC_RMID_INIT_MUNMAP 5 | |
d73f71c7 SK |
94 | #define FASTRPC_RMID_INIT_CREATE 6 |
95 | #define FASTRPC_RMID_INIT_CREATE_ATTR 7 | |
96 | #define FASTRPC_RMID_INIT_CREATE_STATIC 8 | |
5c1b97c7 J |
97 | #define FASTRPC_RMID_INIT_MEM_MAP 10 |
98 | #define FASTRPC_RMID_INIT_MEM_UNMAP 11 | |
d73f71c7 | 99 | |
84195d20 | 100 | /* Protection Domain(PD) ids */ |
1959ab9e | 101 | #define ROOT_PD (0) |
84195d20 JM |
102 | #define USER_PD (1) |
103 | #define SENSORS_PD (2) | |
104 | ||
965602ea | 105 | #define miscdev_to_fdevice(d) container_of(d, struct fastrpc_device, miscdev) |
f6f9279f SK |
106 | |
107 | static const char *domains[FASTRPC_DEV_MAX] = { "adsp", "mdsp", | |
108 | "sdsp", "cdsp"}; | |
c68cfb71 SK |
109 | struct fastrpc_phy_page { |
110 | u64 addr; /* physical address */ | |
111 | u64 size; /* size of contiguous region */ | |
112 | }; | |
113 | ||
114 | struct fastrpc_invoke_buf { | |
115 | u32 num; /* number of contiguous regions */ | |
116 | u32 pgidx; /* index to start of contiguous region */ | |
117 | }; | |
118 | ||
35a82b87 VKG |
119 | struct fastrpc_remote_dmahandle { |
120 | s32 fd; /* dma handle fd */ | |
121 | u32 offset; /* dma handle offset */ | |
122 | u32 len; /* dma handle length */ | |
123 | }; | |
124 | ||
125 | struct fastrpc_remote_buf { | |
126 | u64 pv; /* buffer pointer */ | |
127 | u64 len; /* length of buffer */ | |
128 | }; | |
129 | ||
130 | union fastrpc_remote_arg { | |
131 | struct fastrpc_remote_buf buf; | |
132 | struct fastrpc_remote_dmahandle dma; | |
c68cfb71 SK |
133 | }; |
134 | ||
2419e55e JRO |
135 | struct fastrpc_mmap_rsp_msg { |
136 | u64 vaddr; | |
137 | }; | |
138 | ||
139 | struct fastrpc_mmap_req_msg { | |
140 | s32 pgid; | |
141 | u32 flags; | |
142 | u64 vaddr; | |
143 | s32 num; | |
144 | }; | |
145 | ||
5c1b97c7 J |
146 | struct fastrpc_mem_map_req_msg { |
147 | s32 pgid; | |
148 | s32 fd; | |
149 | s32 offset; | |
150 | u32 flags; | |
151 | u64 vaddrin; | |
152 | s32 num; | |
153 | s32 data_len; | |
154 | }; | |
155 | ||
2419e55e JRO |
156 | struct fastrpc_munmap_req_msg { |
157 | s32 pgid; | |
158 | u64 vaddr; | |
159 | u64 size; | |
160 | }; | |
161 | ||
5c1b97c7 J |
162 | struct fastrpc_mem_unmap_req_msg { |
163 | s32 pgid; | |
164 | s32 fd; | |
165 | u64 vaddrin; | |
166 | u64 len; | |
167 | }; | |
168 | ||
c68cfb71 SK |
169 | struct fastrpc_msg { |
170 | int pid; /* process group id */ | |
171 | int tid; /* thread id */ | |
172 | u64 ctx; /* invoke caller context */ | |
173 | u32 handle; /* handle to invoke */ | |
174 | u32 sc; /* scalars structure describing the data */ | |
175 | u64 addr; /* physical address */ | |
176 | u64 size; /* size of contiguous region */ | |
177 | }; | |
178 | ||
179 | struct fastrpc_invoke_rsp { | |
180 | u64 ctx; /* invoke caller context */ | |
181 | int retval; /* invoke return value */ | |
182 | }; | |
183 | ||
25e8dfb8 SK |
184 | struct fastrpc_buf_overlap { |
185 | u64 start; | |
186 | u64 end; | |
187 | int raix; | |
188 | u64 mstart; | |
189 | u64 mend; | |
190 | u64 offset; | |
191 | }; | |
192 | ||
c68cfb71 SK |
193 | struct fastrpc_buf { |
194 | struct fastrpc_user *fl; | |
6cffd795 | 195 | struct dma_buf *dmabuf; |
c68cfb71 SK |
196 | struct device *dev; |
197 | void *virt; | |
198 | u64 phys; | |
199 | u64 size; | |
6cffd795 SK |
200 | /* Lock for dma buf attachments */ |
201 | struct mutex lock; | |
202 | struct list_head attachments; | |
2419e55e JRO |
203 | /* mmap support */ |
204 | struct list_head node; /* list of user requested mmaps */ | |
205 | uintptr_t raddr; | |
6cffd795 SK |
206 | }; |
207 | ||
208 | struct fastrpc_dma_buf_attachment { | |
209 | struct device *dev; | |
210 | struct sg_table sgt; | |
211 | struct list_head node; | |
c68cfb71 SK |
212 | }; |
213 | ||
214 | struct fastrpc_map { | |
215 | struct list_head node; | |
216 | struct fastrpc_user *fl; | |
217 | int fd; | |
218 | struct dma_buf *buf; | |
219 | struct sg_table *table; | |
220 | struct dma_buf_attachment *attach; | |
221 | u64 phys; | |
222 | u64 size; | |
223 | void *va; | |
224 | u64 len; | |
5c1b97c7 | 225 | u64 raddr; |
e90d9119 | 226 | u32 attr; |
c68cfb71 SK |
227 | struct kref refcount; |
228 | }; | |
229 | ||
230 | struct fastrpc_invoke_ctx { | |
231 | int nscalars; | |
232 | int nbufs; | |
233 | int retval; | |
234 | int pid; | |
235 | int tgid; | |
236 | u32 sc; | |
237 | u32 *crc; | |
238 | u64 ctxid; | |
239 | u64 msg_sz; | |
240 | struct kref refcount; | |
241 | struct list_head node; /* list of ctxs */ | |
242 | struct completion work; | |
8e7389c7 | 243 | struct work_struct put_work; |
c68cfb71 SK |
244 | struct fastrpc_msg msg; |
245 | struct fastrpc_user *fl; | |
35a82b87 | 246 | union fastrpc_remote_arg *rpra; |
c68cfb71 SK |
247 | struct fastrpc_map **maps; |
248 | struct fastrpc_buf *buf; | |
249 | struct fastrpc_invoke_args *args; | |
25e8dfb8 | 250 | struct fastrpc_buf_overlap *olaps; |
c68cfb71 SK |
251 | struct fastrpc_channel_ctx *cctx; |
252 | }; | |
f6f9279f SK |
253 | |
254 | struct fastrpc_session_ctx { | |
255 | struct device *dev; | |
256 | int sid; | |
257 | bool used; | |
258 | bool valid; | |
259 | }; | |
260 | ||
261 | struct fastrpc_channel_ctx { | |
262 | int domain_id; | |
263 | int sesscount; | |
e90d9119 VKG |
264 | int vmcount; |
265 | u32 perms; | |
266 | struct qcom_scm_vmperm vmperms[FASTRPC_MAX_VMIDS]; | |
f6f9279f SK |
267 | struct rpmsg_device *rpdev; |
268 | struct fastrpc_session_ctx session[FASTRPC_MAX_SESSIONS]; | |
269 | spinlock_t lock; | |
270 | struct idr ctx_idr; | |
271 | struct list_head users; | |
278d56f9 | 272 | struct kref refcount; |
6c16fd8b J |
273 | /* Flag if dsp attributes are cached */ |
274 | bool valid_attributes; | |
275 | u32 dsp_attributes[FASTRPC_MAX_DSP_ATTRIBUTES]; | |
3abe3ab3 | 276 | struct fastrpc_device *secure_fdevice; |
965602ea | 277 | struct fastrpc_device *fdevice; |
08715610 | 278 | struct fastrpc_buf *remote_heap; |
76e8e4ac | 279 | struct list_head invoke_interrupted_mmaps; |
3abe3ab3 | 280 | bool secure; |
7f1f4812 | 281 | bool unsigned_support; |
9bde43a0 | 282 | u64 dma_mask; |
965602ea SK |
283 | }; |
284 | ||
285 | struct fastrpc_device { | |
286 | struct fastrpc_channel_ctx *cctx; | |
287 | struct miscdevice miscdev; | |
3abe3ab3 | 288 | bool secure; |
f6f9279f SK |
289 | }; |
290 | ||
291 | struct fastrpc_user { | |
292 | struct list_head user; | |
293 | struct list_head maps; | |
294 | struct list_head pending; | |
2419e55e | 295 | struct list_head mmaps; |
f6f9279f SK |
296 | |
297 | struct fastrpc_channel_ctx *cctx; | |
298 | struct fastrpc_session_ctx *sctx; | |
c68cfb71 | 299 | struct fastrpc_buf *init_mem; |
f6f9279f SK |
300 | |
301 | int tgid; | |
302 | int pd; | |
7f1f4812 | 303 | bool is_secure_dev; |
f6f9279f SK |
304 | /* Lock for lists */ |
305 | spinlock_t lock; | |
306 | /* lock for allocations */ | |
307 | struct mutex mutex; | |
308 | }; | |
309 | ||
c68cfb71 SK |
310 | static void fastrpc_free_map(struct kref *ref) |
311 | { | |
312 | struct fastrpc_map *map; | |
313 | ||
314 | map = container_of(ref, struct fastrpc_map, refcount); | |
315 | ||
316 | if (map->table) { | |
e90d9119 VKG |
317 | if (map->attr & FASTRPC_ATTR_SECUREMAP) { |
318 | struct qcom_scm_vmperm perm; | |
319 | int err = 0; | |
320 | ||
321 | perm.vmid = QCOM_SCM_VMID_HLOS; | |
322 | perm.perm = QCOM_SCM_PERM_RWX; | |
323 | err = qcom_scm_assign_mem(map->phys, map->size, | |
324 | &(map->fl->cctx->vmperms[0].vmid), &perm, 1); | |
325 | if (err) { | |
326 | dev_err(map->fl->sctx->dev, "Failed to assign memory phys 0x%llx size 0x%llx err %d", | |
327 | map->phys, map->size, err); | |
328 | return; | |
329 | } | |
330 | } | |
791da5c7 DO |
331 | dma_buf_unmap_attachment_unlocked(map->attach, map->table, |
332 | DMA_BIDIRECTIONAL); | |
c68cfb71 SK |
333 | dma_buf_detach(map->buf, map->attach); |
334 | dma_buf_put(map->buf); | |
335 | } | |
336 | ||
337 | kfree(map); | |
338 | } | |
339 | ||
340 | static void fastrpc_map_put(struct fastrpc_map *map) | |
341 | { | |
342 | if (map) | |
343 | kref_put(&map->refcount, fastrpc_free_map); | |
344 | } | |
345 | ||
346 | static void fastrpc_map_get(struct fastrpc_map *map) | |
347 | { | |
348 | if (map) | |
349 | kref_get(&map->refcount); | |
350 | } | |
351 | ||
8f6c1d8c VKG |
352 | |
353 | static int fastrpc_map_lookup(struct fastrpc_user *fl, int fd, | |
9446fa16 | 354 | struct fastrpc_map **ppmap, bool take_ref) |
c68cfb71 | 355 | { |
9446fa16 | 356 | struct fastrpc_session_ctx *sess = fl->sctx; |
c68cfb71 | 357 | struct fastrpc_map *map = NULL; |
9446fa16 | 358 | int ret = -ENOENT; |
c68cfb71 | 359 | |
9446fa16 | 360 | spin_lock(&fl->lock); |
c68cfb71 | 361 | list_for_each_entry(map, &fl->maps, node) { |
9446fa16 AV |
362 | if (map->fd != fd) |
363 | continue; | |
c68cfb71 | 364 | |
9446fa16 AV |
365 | if (take_ref) { |
366 | ret = fastrpc_map_get(map); | |
367 | if (ret) { | |
368 | dev_dbg(sess->dev, "%s: Failed to get map fd=%d ret=%d\n", | |
369 | __func__, fd, ret); | |
370 | break; | |
371 | } | |
372 | } | |
8f6c1d8c | 373 | |
9446fa16 AV |
374 | *ppmap = map; |
375 | ret = 0; | |
376 | break; | |
377 | } | |
378 | spin_unlock(&fl->lock); | |
8f6c1d8c VKG |
379 | |
380 | return ret; | |
381 | } | |
382 | ||
c68cfb71 SK |
383 | static void fastrpc_buf_free(struct fastrpc_buf *buf) |
384 | { | |
385 | dma_free_coherent(buf->dev, buf->size, buf->virt, | |
386 | FASTRPC_PHYS(buf->phys)); | |
387 | kfree(buf); | |
388 | } | |
389 | ||
6f18c7e8 | 390 | static int __fastrpc_buf_alloc(struct fastrpc_user *fl, struct device *dev, |
c68cfb71 SK |
391 | u64 size, struct fastrpc_buf **obuf) |
392 | { | |
393 | struct fastrpc_buf *buf; | |
394 | ||
395 | buf = kzalloc(sizeof(*buf), GFP_KERNEL); | |
396 | if (!buf) | |
397 | return -ENOMEM; | |
398 | ||
6cffd795 | 399 | INIT_LIST_HEAD(&buf->attachments); |
2419e55e | 400 | INIT_LIST_HEAD(&buf->node); |
6cffd795 SK |
401 | mutex_init(&buf->lock); |
402 | ||
c68cfb71 SK |
403 | buf->fl = fl; |
404 | buf->virt = NULL; | |
405 | buf->phys = 0; | |
406 | buf->size = size; | |
407 | buf->dev = dev; | |
2419e55e | 408 | buf->raddr = 0; |
c68cfb71 SK |
409 | |
410 | buf->virt = dma_alloc_coherent(dev, buf->size, (dma_addr_t *)&buf->phys, | |
411 | GFP_KERNEL); | |
41db5f83 JRO |
412 | if (!buf->virt) { |
413 | mutex_destroy(&buf->lock); | |
414 | kfree(buf); | |
c68cfb71 | 415 | return -ENOMEM; |
41db5f83 | 416 | } |
c68cfb71 | 417 | |
6f18c7e8 AV |
418 | *obuf = buf; |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
423 | static int fastrpc_buf_alloc(struct fastrpc_user *fl, struct device *dev, | |
424 | u64 size, struct fastrpc_buf **obuf) | |
425 | { | |
426 | int ret; | |
427 | struct fastrpc_buf *buf; | |
428 | ||
429 | ret = __fastrpc_buf_alloc(fl, dev, size, obuf); | |
430 | if (ret) | |
431 | return ret; | |
432 | ||
433 | buf = *obuf; | |
434 | ||
c68cfb71 SK |
435 | if (fl->sctx && fl->sctx->sid) |
436 | buf->phys += ((u64)fl->sctx->sid << 32); | |
437 | ||
c68cfb71 SK |
438 | return 0; |
439 | } | |
440 | ||
6f18c7e8 AV |
441 | static int fastrpc_remote_heap_alloc(struct fastrpc_user *fl, struct device *dev, |
442 | u64 size, struct fastrpc_buf **obuf) | |
443 | { | |
444 | struct device *rdev = &fl->cctx->rpdev->dev; | |
445 | ||
446 | return __fastrpc_buf_alloc(fl, rdev, size, obuf); | |
447 | } | |
448 | ||
278d56f9 BA |
449 | static void fastrpc_channel_ctx_free(struct kref *ref) |
450 | { | |
451 | struct fastrpc_channel_ctx *cctx; | |
452 | ||
453 | cctx = container_of(ref, struct fastrpc_channel_ctx, refcount); | |
454 | ||
455 | kfree(cctx); | |
456 | } | |
457 | ||
458 | static void fastrpc_channel_ctx_get(struct fastrpc_channel_ctx *cctx) | |
459 | { | |
460 | kref_get(&cctx->refcount); | |
461 | } | |
462 | ||
463 | static void fastrpc_channel_ctx_put(struct fastrpc_channel_ctx *cctx) | |
464 | { | |
465 | kref_put(&cctx->refcount, fastrpc_channel_ctx_free); | |
466 | } | |
467 | ||
c68cfb71 SK |
468 | static void fastrpc_context_free(struct kref *ref) |
469 | { | |
470 | struct fastrpc_invoke_ctx *ctx; | |
471 | struct fastrpc_channel_ctx *cctx; | |
977e6c8d | 472 | unsigned long flags; |
c68cfb71 SK |
473 | int i; |
474 | ||
475 | ctx = container_of(ref, struct fastrpc_invoke_ctx, refcount); | |
476 | cctx = ctx->cctx; | |
477 | ||
8f6c1d8c | 478 | for (i = 0; i < ctx->nbufs; i++) |
c68cfb71 SK |
479 | fastrpc_map_put(ctx->maps[i]); |
480 | ||
481 | if (ctx->buf) | |
482 | fastrpc_buf_free(ctx->buf); | |
483 | ||
977e6c8d | 484 | spin_lock_irqsave(&cctx->lock, flags); |
c68cfb71 | 485 | idr_remove(&cctx->ctx_idr, ctx->ctxid >> 4); |
977e6c8d | 486 | spin_unlock_irqrestore(&cctx->lock, flags); |
c68cfb71 SK |
487 | |
488 | kfree(ctx->maps); | |
25e8dfb8 | 489 | kfree(ctx->olaps); |
c68cfb71 | 490 | kfree(ctx); |
278d56f9 BA |
491 | |
492 | fastrpc_channel_ctx_put(cctx); | |
c68cfb71 SK |
493 | } |
494 | ||
495 | static void fastrpc_context_get(struct fastrpc_invoke_ctx *ctx) | |
496 | { | |
497 | kref_get(&ctx->refcount); | |
498 | } | |
499 | ||
500 | static void fastrpc_context_put(struct fastrpc_invoke_ctx *ctx) | |
501 | { | |
502 | kref_put(&ctx->refcount, fastrpc_context_free); | |
503 | } | |
504 | ||
8e7389c7 TE |
505 | static void fastrpc_context_put_wq(struct work_struct *work) |
506 | { | |
507 | struct fastrpc_invoke_ctx *ctx = | |
508 | container_of(work, struct fastrpc_invoke_ctx, put_work); | |
509 | ||
510 | fastrpc_context_put(ctx); | |
511 | } | |
512 | ||
25e8dfb8 SK |
513 | #define CMP(aa, bb) ((aa) == (bb) ? 0 : (aa) < (bb) ? -1 : 1) |
514 | static int olaps_cmp(const void *a, const void *b) | |
515 | { | |
516 | struct fastrpc_buf_overlap *pa = (struct fastrpc_buf_overlap *)a; | |
517 | struct fastrpc_buf_overlap *pb = (struct fastrpc_buf_overlap *)b; | |
518 | /* sort with lowest starting buffer first */ | |
519 | int st = CMP(pa->start, pb->start); | |
520 | /* sort with highest ending buffer first */ | |
521 | int ed = CMP(pb->end, pa->end); | |
522 | ||
523 | return st == 0 ? ed : st; | |
524 | } | |
525 | ||
526 | static void fastrpc_get_buff_overlaps(struct fastrpc_invoke_ctx *ctx) | |
527 | { | |
528 | u64 max_end = 0; | |
529 | int i; | |
530 | ||
531 | for (i = 0; i < ctx->nbufs; ++i) { | |
532 | ctx->olaps[i].start = ctx->args[i].ptr; | |
533 | ctx->olaps[i].end = ctx->olaps[i].start + ctx->args[i].length; | |
534 | ctx->olaps[i].raix = i; | |
535 | } | |
536 | ||
537 | sort(ctx->olaps, ctx->nbufs, sizeof(*ctx->olaps), olaps_cmp, NULL); | |
538 | ||
539 | for (i = 0; i < ctx->nbufs; ++i) { | |
540 | /* Falling inside previous range */ | |
541 | if (ctx->olaps[i].start < max_end) { | |
542 | ctx->olaps[i].mstart = max_end; | |
543 | ctx->olaps[i].mend = ctx->olaps[i].end; | |
544 | ctx->olaps[i].offset = max_end - ctx->olaps[i].start; | |
545 | ||
546 | if (ctx->olaps[i].end > max_end) { | |
547 | max_end = ctx->olaps[i].end; | |
548 | } else { | |
549 | ctx->olaps[i].mend = 0; | |
550 | ctx->olaps[i].mstart = 0; | |
551 | } | |
552 | ||
553 | } else { | |
554 | ctx->olaps[i].mend = ctx->olaps[i].end; | |
555 | ctx->olaps[i].mstart = ctx->olaps[i].start; | |
556 | ctx->olaps[i].offset = 0; | |
557 | max_end = ctx->olaps[i].end; | |
558 | } | |
559 | } | |
560 | } | |
561 | ||
c68cfb71 SK |
562 | static struct fastrpc_invoke_ctx *fastrpc_context_alloc( |
563 | struct fastrpc_user *user, u32 kernel, u32 sc, | |
564 | struct fastrpc_invoke_args *args) | |
565 | { | |
566 | struct fastrpc_channel_ctx *cctx = user->cctx; | |
567 | struct fastrpc_invoke_ctx *ctx = NULL; | |
977e6c8d | 568 | unsigned long flags; |
c68cfb71 SK |
569 | int ret; |
570 | ||
571 | ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); | |
572 | if (!ctx) | |
573 | return ERR_PTR(-ENOMEM); | |
574 | ||
575 | INIT_LIST_HEAD(&ctx->node); | |
576 | ctx->fl = user; | |
577 | ctx->nscalars = REMOTE_SCALARS_LENGTH(sc); | |
578 | ctx->nbufs = REMOTE_SCALARS_INBUFS(sc) + | |
579 | REMOTE_SCALARS_OUTBUFS(sc); | |
580 | ||
581 | if (ctx->nscalars) { | |
582 | ctx->maps = kcalloc(ctx->nscalars, | |
583 | sizeof(*ctx->maps), GFP_KERNEL); | |
584 | if (!ctx->maps) { | |
585 | kfree(ctx); | |
586 | return ERR_PTR(-ENOMEM); | |
587 | } | |
25e8dfb8 SK |
588 | ctx->olaps = kcalloc(ctx->nscalars, |
589 | sizeof(*ctx->olaps), GFP_KERNEL); | |
590 | if (!ctx->olaps) { | |
591 | kfree(ctx->maps); | |
592 | kfree(ctx); | |
593 | return ERR_PTR(-ENOMEM); | |
594 | } | |
c68cfb71 | 595 | ctx->args = args; |
25e8dfb8 | 596 | fastrpc_get_buff_overlaps(ctx); |
c68cfb71 SK |
597 | } |
598 | ||
278d56f9 BA |
599 | /* Released in fastrpc_context_put() */ |
600 | fastrpc_channel_ctx_get(cctx); | |
601 | ||
c68cfb71 SK |
602 | ctx->sc = sc; |
603 | ctx->retval = -1; | |
604 | ctx->pid = current->pid; | |
605 | ctx->tgid = user->tgid; | |
606 | ctx->cctx = cctx; | |
607 | init_completion(&ctx->work); | |
8e7389c7 | 608 | INIT_WORK(&ctx->put_work, fastrpc_context_put_wq); |
c68cfb71 SK |
609 | |
610 | spin_lock(&user->lock); | |
611 | list_add_tail(&ctx->node, &user->pending); | |
612 | spin_unlock(&user->lock); | |
613 | ||
977e6c8d | 614 | spin_lock_irqsave(&cctx->lock, flags); |
c68cfb71 SK |
615 | ret = idr_alloc_cyclic(&cctx->ctx_idr, ctx, 1, |
616 | FASTRPC_CTX_MAX, GFP_ATOMIC); | |
617 | if (ret < 0) { | |
977e6c8d | 618 | spin_unlock_irqrestore(&cctx->lock, flags); |
c68cfb71 SK |
619 | goto err_idr; |
620 | } | |
621 | ctx->ctxid = ret << 4; | |
977e6c8d | 622 | spin_unlock_irqrestore(&cctx->lock, flags); |
c68cfb71 SK |
623 | |
624 | kref_init(&ctx->refcount); | |
625 | ||
626 | return ctx; | |
627 | err_idr: | |
628 | spin_lock(&user->lock); | |
629 | list_del(&ctx->node); | |
630 | spin_unlock(&user->lock); | |
278d56f9 | 631 | fastrpc_channel_ctx_put(cctx); |
c68cfb71 | 632 | kfree(ctx->maps); |
25e8dfb8 | 633 | kfree(ctx->olaps); |
c68cfb71 SK |
634 | kfree(ctx); |
635 | ||
636 | return ERR_PTR(ret); | |
637 | } | |
638 | ||
6cffd795 SK |
639 | static struct sg_table * |
640 | fastrpc_map_dma_buf(struct dma_buf_attachment *attachment, | |
641 | enum dma_data_direction dir) | |
642 | { | |
643 | struct fastrpc_dma_buf_attachment *a = attachment->priv; | |
644 | struct sg_table *table; | |
b212658a | 645 | int ret; |
6cffd795 SK |
646 | |
647 | table = &a->sgt; | |
648 | ||
b212658a JM |
649 | ret = dma_map_sgtable(attachment->dev, table, dir, 0); |
650 | if (ret) | |
651 | table = ERR_PTR(ret); | |
6cffd795 SK |
652 | return table; |
653 | } | |
654 | ||
655 | static void fastrpc_unmap_dma_buf(struct dma_buf_attachment *attach, | |
656 | struct sg_table *table, | |
657 | enum dma_data_direction dir) | |
658 | { | |
7cd7edb8 | 659 | dma_unmap_sgtable(attach->dev, table, dir, 0); |
6cffd795 SK |
660 | } |
661 | ||
662 | static void fastrpc_release(struct dma_buf *dmabuf) | |
663 | { | |
664 | struct fastrpc_buf *buffer = dmabuf->priv; | |
665 | ||
666 | fastrpc_buf_free(buffer); | |
667 | } | |
668 | ||
669 | static int fastrpc_dma_buf_attach(struct dma_buf *dmabuf, | |
670 | struct dma_buf_attachment *attachment) | |
671 | { | |
672 | struct fastrpc_dma_buf_attachment *a; | |
673 | struct fastrpc_buf *buffer = dmabuf->priv; | |
674 | int ret; | |
675 | ||
676 | a = kzalloc(sizeof(*a), GFP_KERNEL); | |
677 | if (!a) | |
678 | return -ENOMEM; | |
679 | ||
680 | ret = dma_get_sgtable(buffer->dev, &a->sgt, buffer->virt, | |
681 | FASTRPC_PHYS(buffer->phys), buffer->size); | |
682 | if (ret < 0) { | |
683 | dev_err(buffer->dev, "failed to get scatterlist from DMA API\n"); | |
fc739a05 | 684 | kfree(a); |
6cffd795 SK |
685 | return -EINVAL; |
686 | } | |
687 | ||
688 | a->dev = attachment->dev; | |
689 | INIT_LIST_HEAD(&a->node); | |
690 | attachment->priv = a; | |
691 | ||
692 | mutex_lock(&buffer->lock); | |
693 | list_add(&a->node, &buffer->attachments); | |
694 | mutex_unlock(&buffer->lock); | |
695 | ||
696 | return 0; | |
697 | } | |
698 | ||
699 | static void fastrpc_dma_buf_detatch(struct dma_buf *dmabuf, | |
700 | struct dma_buf_attachment *attachment) | |
701 | { | |
702 | struct fastrpc_dma_buf_attachment *a = attachment->priv; | |
703 | struct fastrpc_buf *buffer = dmabuf->priv; | |
704 | ||
705 | mutex_lock(&buffer->lock); | |
706 | list_del(&a->node); | |
707 | mutex_unlock(&buffer->lock); | |
cf61860e | 708 | sg_free_table(&a->sgt); |
6cffd795 SK |
709 | kfree(a); |
710 | } | |
711 | ||
7938f421 | 712 | static int fastrpc_vmap(struct dma_buf *dmabuf, struct iosys_map *map) |
6cffd795 SK |
713 | { |
714 | struct fastrpc_buf *buf = dmabuf->priv; | |
715 | ||
7938f421 | 716 | iosys_map_set_vaddr(map, buf->virt); |
6619ccf1 TZ |
717 | |
718 | return 0; | |
6cffd795 SK |
719 | } |
720 | ||
721 | static int fastrpc_mmap(struct dma_buf *dmabuf, | |
722 | struct vm_area_struct *vma) | |
723 | { | |
724 | struct fastrpc_buf *buf = dmabuf->priv; | |
725 | size_t size = vma->vm_end - vma->vm_start; | |
726 | ||
265751a5 DO |
727 | dma_resv_assert_held(dmabuf->resv); |
728 | ||
6cffd795 SK |
729 | return dma_mmap_coherent(buf->dev, vma, buf->virt, |
730 | FASTRPC_PHYS(buf->phys), size); | |
731 | } | |
732 | ||
733 | static const struct dma_buf_ops fastrpc_dma_buf_ops = { | |
734 | .attach = fastrpc_dma_buf_attach, | |
735 | .detach = fastrpc_dma_buf_detatch, | |
736 | .map_dma_buf = fastrpc_map_dma_buf, | |
737 | .unmap_dma_buf = fastrpc_unmap_dma_buf, | |
738 | .mmap = fastrpc_mmap, | |
6cffd795 SK |
739 | .vmap = fastrpc_vmap, |
740 | .release = fastrpc_release, | |
741 | }; | |
742 | ||
c68cfb71 | 743 | static int fastrpc_map_create(struct fastrpc_user *fl, int fd, |
e90d9119 | 744 | u64 len, u32 attr, struct fastrpc_map **ppmap) |
c68cfb71 SK |
745 | { |
746 | struct fastrpc_session_ctx *sess = fl->sctx; | |
747 | struct fastrpc_map *map = NULL; | |
748 | int err = 0; | |
749 | ||
9446fa16 | 750 | if (!fastrpc_map_lookup(fl, fd, ppmap, true)) |
c68cfb71 SK |
751 | return 0; |
752 | ||
753 | map = kzalloc(sizeof(*map), GFP_KERNEL); | |
754 | if (!map) | |
755 | return -ENOMEM; | |
756 | ||
757 | INIT_LIST_HEAD(&map->node); | |
334f1a1c AV |
758 | kref_init(&map->refcount); |
759 | ||
c68cfb71 SK |
760 | map->fl = fl; |
761 | map->fd = fd; | |
762 | map->buf = dma_buf_get(fd); | |
682a6044 WY |
763 | if (IS_ERR(map->buf)) { |
764 | err = PTR_ERR(map->buf); | |
c68cfb71 SK |
765 | goto get_err; |
766 | } | |
767 | ||
768 | map->attach = dma_buf_attach(map->buf, sess->dev); | |
769 | if (IS_ERR(map->attach)) { | |
770 | dev_err(sess->dev, "Failed to attach dmabuf\n"); | |
771 | err = PTR_ERR(map->attach); | |
772 | goto attach_err; | |
773 | } | |
774 | ||
791da5c7 | 775 | map->table = dma_buf_map_attachment_unlocked(map->attach, DMA_BIDIRECTIONAL); |
c68cfb71 SK |
776 | if (IS_ERR(map->table)) { |
777 | err = PTR_ERR(map->table); | |
778 | goto map_err; | |
779 | } | |
780 | ||
781 | map->phys = sg_dma_address(map->table->sgl); | |
782 | map->phys += ((u64)fl->sctx->sid << 32); | |
783 | map->size = len; | |
784 | map->va = sg_virt(map->table->sgl); | |
785 | map->len = len; | |
c68cfb71 | 786 | |
e90d9119 VKG |
787 | if (attr & FASTRPC_ATTR_SECUREMAP) { |
788 | /* | |
789 | * If subsystem VMIDs are defined in DTSI, then do | |
790 | * hyp_assign from HLOS to those VM(s) | |
791 | */ | |
792 | unsigned int perms = BIT(QCOM_SCM_VMID_HLOS); | |
793 | ||
794 | map->attr = attr; | |
795 | err = qcom_scm_assign_mem(map->phys, (u64)map->size, &perms, | |
796 | fl->cctx->vmperms, fl->cctx->vmcount); | |
797 | if (err) { | |
798 | dev_err(sess->dev, "Failed to assign memory with phys 0x%llx size 0x%llx err %d", | |
799 | map->phys, map->size, err); | |
800 | goto map_err; | |
801 | } | |
802 | } | |
c68cfb71 SK |
803 | spin_lock(&fl->lock); |
804 | list_add_tail(&map->node, &fl->maps); | |
805 | spin_unlock(&fl->lock); | |
806 | *ppmap = map; | |
807 | ||
808 | return 0; | |
809 | ||
810 | map_err: | |
811 | dma_buf_detach(map->buf, map->attach); | |
812 | attach_err: | |
813 | dma_buf_put(map->buf); | |
814 | get_err: | |
334f1a1c | 815 | fastrpc_map_put(map); |
c68cfb71 SK |
816 | |
817 | return err; | |
818 | } | |
819 | ||
820 | /* | |
821 | * Fastrpc payload buffer with metadata looks like: | |
822 | * | |
823 | * >>>>>> START of METADATA <<<<<<<<< | |
824 | * +---------------------------------+ | |
825 | * | Arguments | | |
35a82b87 | 826 | * | type:(union fastrpc_remote_arg)| |
c68cfb71 SK |
827 | * | (0 - N) | |
828 | * +---------------------------------+ | |
829 | * | Invoke Buffer list | | |
830 | * | type:(struct fastrpc_invoke_buf)| | |
831 | * | (0 - N) | | |
832 | * +---------------------------------+ | |
833 | * | Page info list | | |
834 | * | type:(struct fastrpc_phy_page) | | |
835 | * | (0 - N) | | |
836 | * +---------------------------------+ | |
837 | * | Optional info | | |
838 | * |(can be specific to SoC/Firmware)| | |
839 | * +---------------------------------+ | |
840 | * >>>>>>>> END of METADATA <<<<<<<<< | |
841 | * +---------------------------------+ | |
842 | * | Inline ARGS | | |
843 | * | (0-N) | | |
844 | * +---------------------------------+ | |
845 | */ | |
846 | ||
847 | static int fastrpc_get_meta_size(struct fastrpc_invoke_ctx *ctx) | |
848 | { | |
849 | int size = 0; | |
850 | ||
35a82b87 | 851 | size = (sizeof(struct fastrpc_remote_buf) + |
c68cfb71 SK |
852 | sizeof(struct fastrpc_invoke_buf) + |
853 | sizeof(struct fastrpc_phy_page)) * ctx->nscalars + | |
854 | sizeof(u64) * FASTRPC_MAX_FDLIST + | |
855 | sizeof(u32) * FASTRPC_MAX_CRCLIST; | |
856 | ||
857 | return size; | |
858 | } | |
859 | ||
860 | static u64 fastrpc_get_payload_size(struct fastrpc_invoke_ctx *ctx, int metalen) | |
861 | { | |
862 | u64 size = 0; | |
3a1bf591 | 863 | int oix; |
c68cfb71 SK |
864 | |
865 | size = ALIGN(metalen, FASTRPC_ALIGN); | |
3a1bf591 J |
866 | for (oix = 0; oix < ctx->nbufs; oix++) { |
867 | int i = ctx->olaps[oix].raix; | |
868 | ||
c68cfb71 | 869 | if (ctx->args[i].fd == 0 || ctx->args[i].fd == -1) { |
25e8dfb8 | 870 | |
3a1bf591 | 871 | if (ctx->olaps[oix].offset == 0) |
25e8dfb8 SK |
872 | size = ALIGN(size, FASTRPC_ALIGN); |
873 | ||
3a1bf591 | 874 | size += (ctx->olaps[oix].mend - ctx->olaps[oix].mstart); |
c68cfb71 SK |
875 | } |
876 | } | |
877 | ||
878 | return size; | |
879 | } | |
880 | ||
881 | static int fastrpc_create_maps(struct fastrpc_invoke_ctx *ctx) | |
882 | { | |
883 | struct device *dev = ctx->fl->sctx->dev; | |
884 | int i, err; | |
885 | ||
886 | for (i = 0; i < ctx->nscalars; ++i) { | |
c68cfb71 SK |
887 | |
888 | if (ctx->args[i].fd == 0 || ctx->args[i].fd == -1 || | |
889 | ctx->args[i].length == 0) | |
890 | continue; | |
891 | ||
892 | err = fastrpc_map_create(ctx->fl, ctx->args[i].fd, | |
e90d9119 | 893 | ctx->args[i].length, ctx->args[i].attr, &ctx->maps[i]); |
c68cfb71 SK |
894 | if (err) { |
895 | dev_err(dev, "Error Creating map %d\n", err); | |
896 | return -EINVAL; | |
897 | } | |
898 | ||
899 | } | |
900 | return 0; | |
901 | } | |
902 | ||
54f7c85b VKG |
903 | static struct fastrpc_invoke_buf *fastrpc_invoke_buf_start(union fastrpc_remote_arg *pra, int len) |
904 | { | |
905 | return (struct fastrpc_invoke_buf *)(&pra[len]); | |
906 | } | |
907 | ||
908 | static struct fastrpc_phy_page *fastrpc_phy_page_start(struct fastrpc_invoke_buf *buf, int len) | |
909 | { | |
910 | return (struct fastrpc_phy_page *)(&buf[len]); | |
911 | } | |
912 | ||
c68cfb71 SK |
913 | static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx) |
914 | { | |
915 | struct device *dev = ctx->fl->sctx->dev; | |
35a82b87 | 916 | union fastrpc_remote_arg *rpra; |
c68cfb71 SK |
917 | struct fastrpc_invoke_buf *list; |
918 | struct fastrpc_phy_page *pages; | |
25e8dfb8 SK |
919 | int inbufs, i, oix, err = 0; |
920 | u64 len, rlen, pkt_size; | |
02b45b47 | 921 | u64 pg_start, pg_end; |
c68cfb71 SK |
922 | uintptr_t args; |
923 | int metalen; | |
924 | ||
c68cfb71 SK |
925 | inbufs = REMOTE_SCALARS_INBUFS(ctx->sc); |
926 | metalen = fastrpc_get_meta_size(ctx); | |
927 | pkt_size = fastrpc_get_payload_size(ctx, metalen); | |
928 | ||
929 | err = fastrpc_create_maps(ctx); | |
930 | if (err) | |
931 | return err; | |
932 | ||
933 | ctx->msg_sz = pkt_size; | |
934 | ||
935 | err = fastrpc_buf_alloc(ctx->fl, dev, pkt_size, &ctx->buf); | |
936 | if (err) | |
937 | return err; | |
938 | ||
939 | rpra = ctx->buf->virt; | |
54f7c85b VKG |
940 | list = fastrpc_invoke_buf_start(rpra, ctx->nscalars); |
941 | pages = fastrpc_phy_page_start(list, ctx->nscalars); | |
c68cfb71 SK |
942 | args = (uintptr_t)ctx->buf->virt + metalen; |
943 | rlen = pkt_size - metalen; | |
944 | ctx->rpra = rpra; | |
945 | ||
25e8dfb8 SK |
946 | for (oix = 0; oix < ctx->nbufs; ++oix) { |
947 | int mlen; | |
948 | ||
949 | i = ctx->olaps[oix].raix; | |
950 | len = ctx->args[i].length; | |
c68cfb71 | 951 | |
35a82b87 VKG |
952 | rpra[i].buf.pv = 0; |
953 | rpra[i].buf.len = len; | |
c68cfb71 SK |
954 | list[i].num = len ? 1 : 0; |
955 | list[i].pgidx = i; | |
956 | ||
957 | if (!len) | |
958 | continue; | |
959 | ||
c68cfb71 | 960 | if (ctx->maps[i]) { |
80f3afd7 SK |
961 | struct vm_area_struct *vma = NULL; |
962 | ||
35a82b87 | 963 | rpra[i].buf.pv = (u64) ctx->args[i].ptr; |
c68cfb71 | 964 | pages[i].addr = ctx->maps[i]->phys; |
80f3afd7 | 965 | |
f9a470db | 966 | mmap_read_lock(current->mm); |
80f3afd7 SK |
967 | vma = find_vma(current->mm, ctx->args[i].ptr); |
968 | if (vma) | |
969 | pages[i].addr += ctx->args[i].ptr - | |
970 | vma->vm_start; | |
f9a470db | 971 | mmap_read_unlock(current->mm); |
80f3afd7 | 972 | |
02b45b47 SK |
973 | pg_start = (ctx->args[i].ptr & PAGE_MASK) >> PAGE_SHIFT; |
974 | pg_end = ((ctx->args[i].ptr + len - 1) & PAGE_MASK) >> | |
975 | PAGE_SHIFT; | |
976 | pages[i].size = (pg_end - pg_start + 1) * PAGE_SIZE; | |
977 | ||
c68cfb71 | 978 | } else { |
25e8dfb8 SK |
979 | |
980 | if (ctx->olaps[oix].offset == 0) { | |
981 | rlen -= ALIGN(args, FASTRPC_ALIGN) - args; | |
982 | args = ALIGN(args, FASTRPC_ALIGN); | |
983 | } | |
984 | ||
985 | mlen = ctx->olaps[oix].mend - ctx->olaps[oix].mstart; | |
986 | ||
987 | if (rlen < mlen) | |
c68cfb71 SK |
988 | goto bail; |
989 | ||
35a82b87 | 990 | rpra[i].buf.pv = args - ctx->olaps[oix].offset; |
25e8dfb8 SK |
991 | pages[i].addr = ctx->buf->phys - |
992 | ctx->olaps[oix].offset + | |
993 | (pkt_size - rlen); | |
c68cfb71 | 994 | pages[i].addr = pages[i].addr & PAGE_MASK; |
25e8dfb8 | 995 | |
02b45b47 SK |
996 | pg_start = (args & PAGE_MASK) >> PAGE_SHIFT; |
997 | pg_end = ((args + len - 1) & PAGE_MASK) >> PAGE_SHIFT; | |
998 | pages[i].size = (pg_end - pg_start + 1) * PAGE_SIZE; | |
25e8dfb8 SK |
999 | args = args + mlen; |
1000 | rlen -= mlen; | |
c68cfb71 SK |
1001 | } |
1002 | ||
1003 | if (i < inbufs && !ctx->maps[i]) { | |
35a82b87 | 1004 | void *dst = (void *)(uintptr_t)rpra[i].buf.pv; |
c68cfb71 SK |
1005 | void *src = (void *)(uintptr_t)ctx->args[i].ptr; |
1006 | ||
1007 | if (!kernel) { | |
1008 | if (copy_from_user(dst, (void __user *)src, | |
1009 | len)) { | |
1010 | err = -EFAULT; | |
1011 | goto bail; | |
1012 | } | |
1013 | } else { | |
1014 | memcpy(dst, src, len); | |
1015 | } | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | for (i = ctx->nbufs; i < ctx->nscalars; ++i) { | |
c68cfb71 SK |
1020 | list[i].num = ctx->args[i].length ? 1 : 0; |
1021 | list[i].pgidx = i; | |
35a82b87 VKG |
1022 | if (ctx->maps[i]) { |
1023 | pages[i].addr = ctx->maps[i]->phys; | |
1024 | pages[i].size = ctx->maps[i]->size; | |
1025 | } | |
1026 | rpra[i].dma.fd = ctx->args[i].fd; | |
1027 | rpra[i].dma.len = ctx->args[i].length; | |
1028 | rpra[i].dma.offset = (u64) ctx->args[i].ptr; | |
c68cfb71 SK |
1029 | } |
1030 | ||
1031 | bail: | |
1032 | if (err) | |
1033 | dev_err(dev, "Error: get invoke args failed:%d\n", err); | |
1034 | ||
1035 | return err; | |
1036 | } | |
1037 | ||
1038 | static int fastrpc_put_args(struct fastrpc_invoke_ctx *ctx, | |
1039 | u32 kernel) | |
1040 | { | |
35a82b87 | 1041 | union fastrpc_remote_arg *rpra = ctx->rpra; |
8f6c1d8c VKG |
1042 | struct fastrpc_user *fl = ctx->fl; |
1043 | struct fastrpc_map *mmap = NULL; | |
1044 | struct fastrpc_invoke_buf *list; | |
1045 | struct fastrpc_phy_page *pages; | |
1046 | u64 *fdlist; | |
1047 | int i, inbufs, outbufs, handles; | |
c68cfb71 SK |
1048 | |
1049 | inbufs = REMOTE_SCALARS_INBUFS(ctx->sc); | |
8f6c1d8c VKG |
1050 | outbufs = REMOTE_SCALARS_OUTBUFS(ctx->sc); |
1051 | handles = REMOTE_SCALARS_INHANDLES(ctx->sc) + REMOTE_SCALARS_OUTHANDLES(ctx->sc); | |
1052 | list = fastrpc_invoke_buf_start(rpra, ctx->nscalars); | |
1053 | pages = fastrpc_phy_page_start(list, ctx->nscalars); | |
1054 | fdlist = (uint64_t *)(pages + inbufs + outbufs + handles); | |
c68cfb71 SK |
1055 | |
1056 | for (i = inbufs; i < ctx->nbufs; ++i) { | |
847afd7b | 1057 | if (!ctx->maps[i]) { |
35a82b87 | 1058 | void *src = (void *)(uintptr_t)rpra[i].buf.pv; |
847afd7b | 1059 | void *dst = (void *)(uintptr_t)ctx->args[i].ptr; |
35a82b87 | 1060 | u64 len = rpra[i].buf.len; |
c68cfb71 | 1061 | |
847afd7b J |
1062 | if (!kernel) { |
1063 | if (copy_to_user((void __user *)dst, src, len)) | |
1064 | return -EFAULT; | |
1065 | } else { | |
1066 | memcpy(dst, src, len); | |
1067 | } | |
c68cfb71 SK |
1068 | } |
1069 | } | |
1070 | ||
8f6c1d8c VKG |
1071 | for (i = 0; i < FASTRPC_MAX_FDLIST; i++) { |
1072 | if (!fdlist[i]) | |
1073 | break; | |
9446fa16 | 1074 | if (!fastrpc_map_lookup(fl, (int)fdlist[i], &mmap, false)) |
8f6c1d8c VKG |
1075 | fastrpc_map_put(mmap); |
1076 | } | |
1077 | ||
c68cfb71 SK |
1078 | return 0; |
1079 | } | |
1080 | ||
1081 | static int fastrpc_invoke_send(struct fastrpc_session_ctx *sctx, | |
1082 | struct fastrpc_invoke_ctx *ctx, | |
1083 | u32 kernel, uint32_t handle) | |
1084 | { | |
1085 | struct fastrpc_channel_ctx *cctx; | |
1086 | struct fastrpc_user *fl = ctx->fl; | |
1087 | struct fastrpc_msg *msg = &ctx->msg; | |
74003385 | 1088 | int ret; |
c68cfb71 SK |
1089 | |
1090 | cctx = fl->cctx; | |
1091 | msg->pid = fl->tgid; | |
1092 | msg->tid = current->pid; | |
1093 | ||
1094 | if (kernel) | |
1095 | msg->pid = 0; | |
1096 | ||
1097 | msg->ctx = ctx->ctxid | fl->pd; | |
1098 | msg->handle = handle; | |
1099 | msg->sc = ctx->sc; | |
1100 | msg->addr = ctx->buf ? ctx->buf->phys : 0; | |
1101 | msg->size = roundup(ctx->msg_sz, PAGE_SIZE); | |
1102 | fastrpc_context_get(ctx); | |
1103 | ||
74003385 SK |
1104 | ret = rpmsg_send(cctx->rpdev->ept, (void *)msg, sizeof(*msg)); |
1105 | ||
1106 | if (ret) | |
1107 | fastrpc_context_put(ctx); | |
1108 | ||
1109 | return ret; | |
1110 | ||
c68cfb71 SK |
1111 | } |
1112 | ||
1113 | static int fastrpc_internal_invoke(struct fastrpc_user *fl, u32 kernel, | |
1114 | u32 handle, u32 sc, | |
1115 | struct fastrpc_invoke_args *args) | |
1116 | { | |
1117 | struct fastrpc_invoke_ctx *ctx = NULL; | |
76e8e4ac AV |
1118 | struct fastrpc_buf *buf, *b; |
1119 | ||
c68cfb71 SK |
1120 | int err = 0; |
1121 | ||
1122 | if (!fl->sctx) | |
1123 | return -EINVAL; | |
1124 | ||
2e369878 BA |
1125 | if (!fl->cctx->rpdev) |
1126 | return -EPIPE; | |
1127 | ||
20c40794 DB |
1128 | if (handle == FASTRPC_INIT_HANDLE && !kernel) { |
1129 | dev_warn_ratelimited(fl->sctx->dev, "user app trying to send a kernel RPC message (%d)\n", handle); | |
1130 | return -EPERM; | |
1131 | } | |
1132 | ||
c68cfb71 SK |
1133 | ctx = fastrpc_context_alloc(fl, kernel, sc, args); |
1134 | if (IS_ERR(ctx)) | |
1135 | return PTR_ERR(ctx); | |
1136 | ||
1137 | if (ctx->nscalars) { | |
1138 | err = fastrpc_get_args(kernel, ctx); | |
1139 | if (err) | |
1140 | goto bail; | |
1141 | } | |
415a0729 SK |
1142 | |
1143 | /* make sure that all CPU memory writes are seen by DSP */ | |
1144 | dma_wmb(); | |
c68cfb71 SK |
1145 | /* Send invoke buffer to remote dsp */ |
1146 | err = fastrpc_invoke_send(fl->sctx, ctx, kernel, handle); | |
1147 | if (err) | |
1148 | goto bail; | |
1149 | ||
55bcda35 JRO |
1150 | if (kernel) { |
1151 | if (!wait_for_completion_timeout(&ctx->work, 10 * HZ)) | |
1152 | err = -ETIMEDOUT; | |
1153 | } else { | |
1154 | err = wait_for_completion_interruptible(&ctx->work); | |
1155 | } | |
1156 | ||
c68cfb71 SK |
1157 | if (err) |
1158 | goto bail; | |
1159 | ||
1160 | /* Check the response from remote dsp */ | |
1161 | err = ctx->retval; | |
1162 | if (err) | |
1163 | goto bail; | |
1164 | ||
1165 | if (ctx->nscalars) { | |
415a0729 SK |
1166 | /* make sure that all memory writes by DSP are seen by CPU */ |
1167 | dma_rmb(); | |
c68cfb71 SK |
1168 | /* populate all the output buffers with results */ |
1169 | err = fastrpc_put_args(ctx, kernel); | |
1170 | if (err) | |
1171 | goto bail; | |
1172 | } | |
1173 | ||
1174 | bail: | |
387f6255 JRO |
1175 | if (err != -ERESTARTSYS && err != -ETIMEDOUT) { |
1176 | /* We are done with this compute context */ | |
1177 | spin_lock(&fl->lock); | |
1178 | list_del(&ctx->node); | |
1179 | spin_unlock(&fl->lock); | |
1180 | fastrpc_context_put(ctx); | |
1181 | } | |
08715610 | 1182 | |
76e8e4ac AV |
1183 | if (err == -ERESTARTSYS) { |
1184 | list_for_each_entry_safe(buf, b, &fl->mmaps, node) { | |
1185 | list_del(&buf->node); | |
1186 | list_add_tail(&buf->node, &fl->cctx->invoke_interrupted_mmaps); | |
1187 | } | |
1188 | } | |
1189 | ||
c68cfb71 SK |
1190 | if (err) |
1191 | dev_dbg(fl->sctx->dev, "Error: Invoke Failed %d\n", err); | |
1192 | ||
1193 | return err; | |
1194 | } | |
1195 | ||
7f1f4812 J |
1196 | static bool is_session_rejected(struct fastrpc_user *fl, bool unsigned_pd_request) |
1197 | { | |
1198 | /* Check if the device node is non-secure and channel is secure*/ | |
1199 | if (!fl->is_secure_dev && fl->cctx->secure) { | |
1200 | /* | |
1201 | * Allow untrusted applications to offload only to Unsigned PD when | |
1202 | * channel is configured as secure and block untrusted apps on channel | |
1203 | * that does not support unsigned PD offload | |
1204 | */ | |
1205 | if (!fl->cctx->unsigned_support || !unsigned_pd_request) { | |
1206 | dev_err(&fl->cctx->rpdev->dev, "Error: Untrusted application trying to offload to signed PD"); | |
1207 | return true; | |
1208 | } | |
1209 | } | |
1210 | ||
1211 | return false; | |
1212 | } | |
1213 | ||
08715610 AV |
1214 | static int fastrpc_init_create_static_process(struct fastrpc_user *fl, |
1215 | char __user *argp) | |
1216 | { | |
1217 | struct fastrpc_init_create_static init; | |
1218 | struct fastrpc_invoke_args *args; | |
1219 | struct fastrpc_phy_page pages[1]; | |
1220 | char *name; | |
1221 | int err; | |
1222 | struct { | |
1223 | int pgid; | |
1224 | u32 namelen; | |
1225 | u32 pageslen; | |
1226 | } inbuf; | |
1227 | u32 sc; | |
1228 | ||
1229 | args = kcalloc(FASTRPC_CREATE_STATIC_PROCESS_NARGS, sizeof(*args), GFP_KERNEL); | |
1230 | if (!args) | |
1231 | return -ENOMEM; | |
1232 | ||
1233 | if (copy_from_user(&init, argp, sizeof(init))) { | |
1234 | err = -EFAULT; | |
1235 | goto err; | |
1236 | } | |
1237 | ||
1238 | if (init.namelen > INIT_FILE_NAMELEN_MAX) { | |
1239 | err = -EINVAL; | |
1240 | goto err; | |
1241 | } | |
1242 | ||
1243 | name = kzalloc(init.namelen, GFP_KERNEL); | |
1244 | if (!name) { | |
1245 | err = -ENOMEM; | |
1246 | goto err; | |
1247 | } | |
1248 | ||
1249 | if (copy_from_user(name, (void __user *)(uintptr_t)init.name, init.namelen)) { | |
1250 | err = -EFAULT; | |
1251 | goto err_name; | |
1252 | } | |
1253 | ||
1254 | if (!fl->cctx->remote_heap) { | |
1255 | err = fastrpc_remote_heap_alloc(fl, fl->sctx->dev, init.memlen, | |
1256 | &fl->cctx->remote_heap); | |
1257 | if (err) | |
1258 | goto err_name; | |
1259 | ||
1260 | /* Map if we have any heap VMIDs associated with this ADSP Static Process. */ | |
1261 | if (fl->cctx->vmcount) { | |
1262 | unsigned int perms = BIT(QCOM_SCM_VMID_HLOS); | |
1263 | ||
1264 | err = qcom_scm_assign_mem(fl->cctx->remote_heap->phys, | |
1265 | (u64)fl->cctx->remote_heap->size, &perms, | |
1266 | fl->cctx->vmperms, fl->cctx->vmcount); | |
1267 | if (err) { | |
1268 | dev_err(fl->sctx->dev, "Failed to assign memory with phys 0x%llx size 0x%llx err %d", | |
1269 | fl->cctx->remote_heap->phys, fl->cctx->remote_heap->size, err); | |
1270 | goto err_map; | |
1271 | } | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | inbuf.pgid = fl->tgid; | |
1276 | inbuf.namelen = init.namelen; | |
1277 | inbuf.pageslen = 0; | |
1278 | fl->pd = USER_PD; | |
1279 | ||
1280 | args[0].ptr = (u64)(uintptr_t)&inbuf; | |
1281 | args[0].length = sizeof(inbuf); | |
1282 | args[0].fd = -1; | |
1283 | ||
1284 | args[1].ptr = (u64)(uintptr_t)name; | |
1285 | args[1].length = inbuf.namelen; | |
1286 | args[1].fd = -1; | |
1287 | ||
1288 | pages[0].addr = fl->cctx->remote_heap->phys; | |
1289 | pages[0].size = fl->cctx->remote_heap->size; | |
1290 | ||
1291 | args[2].ptr = (u64)(uintptr_t) pages; | |
1292 | args[2].length = sizeof(*pages); | |
1293 | args[2].fd = -1; | |
1294 | ||
1295 | sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_CREATE_STATIC, 3, 0); | |
1296 | ||
1297 | err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, | |
1298 | sc, args); | |
1299 | if (err) | |
1300 | goto err_invoke; | |
1301 | ||
1302 | kfree(args); | |
1303 | ||
1304 | return 0; | |
1305 | err_invoke: | |
1306 | if (fl->cctx->vmcount) { | |
1307 | struct qcom_scm_vmperm perm; | |
1308 | ||
1309 | perm.vmid = QCOM_SCM_VMID_HLOS; | |
1310 | perm.perm = QCOM_SCM_PERM_RWX; | |
1311 | err = qcom_scm_assign_mem(fl->cctx->remote_heap->phys, | |
1312 | (u64)fl->cctx->remote_heap->size, | |
1313 | &(fl->cctx->vmperms[0].vmid), &perm, 1); | |
1314 | if (err) | |
1315 | dev_err(fl->sctx->dev, "Failed to assign memory phys 0x%llx size 0x%llx err %d", | |
1316 | fl->cctx->remote_heap->phys, fl->cctx->remote_heap->size, err); | |
1317 | } | |
1318 | err_map: | |
1319 | fastrpc_buf_free(fl->cctx->remote_heap); | |
1320 | err_name: | |
1321 | kfree(name); | |
1322 | err: | |
1323 | kfree(args); | |
1324 | ||
1325 | return err; | |
1326 | } | |
1327 | ||
d73f71c7 SK |
1328 | static int fastrpc_init_create_process(struct fastrpc_user *fl, |
1329 | char __user *argp) | |
1330 | { | |
1331 | struct fastrpc_init_create init; | |
1332 | struct fastrpc_invoke_args *args; | |
1333 | struct fastrpc_phy_page pages[1]; | |
1334 | struct fastrpc_map *map = NULL; | |
1335 | struct fastrpc_buf *imem = NULL; | |
1336 | int memlen; | |
1337 | int err; | |
1338 | struct { | |
1339 | int pgid; | |
1340 | u32 namelen; | |
1341 | u32 filelen; | |
1342 | u32 pageslen; | |
1343 | u32 attrs; | |
1344 | u32 siglen; | |
1345 | } inbuf; | |
1346 | u32 sc; | |
7f1f4812 | 1347 | bool unsigned_module = false; |
d73f71c7 SK |
1348 | |
1349 | args = kcalloc(FASTRPC_CREATE_PROCESS_NARGS, sizeof(*args), GFP_KERNEL); | |
1350 | if (!args) | |
1351 | return -ENOMEM; | |
1352 | ||
1353 | if (copy_from_user(&init, argp, sizeof(init))) { | |
1354 | err = -EFAULT; | |
b49f6d83 | 1355 | goto err; |
d73f71c7 SK |
1356 | } |
1357 | ||
7f1f4812 J |
1358 | if (init.attrs & FASTRPC_MODE_UNSIGNED_MODULE) |
1359 | unsigned_module = true; | |
1360 | ||
1361 | if (is_session_rejected(fl, unsigned_module)) { | |
1362 | err = -ECONNREFUSED; | |
1363 | goto err; | |
1364 | } | |
1365 | ||
d73f71c7 SK |
1366 | if (init.filelen > INIT_FILELEN_MAX) { |
1367 | err = -EINVAL; | |
b49f6d83 | 1368 | goto err; |
d73f71c7 SK |
1369 | } |
1370 | ||
1371 | inbuf.pgid = fl->tgid; | |
1372 | inbuf.namelen = strlen(current->comm) + 1; | |
1373 | inbuf.filelen = init.filelen; | |
1374 | inbuf.pageslen = 1; | |
1375 | inbuf.attrs = init.attrs; | |
1376 | inbuf.siglen = init.siglen; | |
84195d20 | 1377 | fl->pd = USER_PD; |
d73f71c7 SK |
1378 | |
1379 | if (init.filelen && init.filefd) { | |
e90d9119 | 1380 | err = fastrpc_map_create(fl, init.filefd, init.filelen, 0, &map); |
d73f71c7 | 1381 | if (err) |
b49f6d83 | 1382 | goto err; |
d73f71c7 SK |
1383 | } |
1384 | ||
1385 | memlen = ALIGN(max(INIT_FILELEN_MAX, (int)init.filelen * 4), | |
1386 | 1024 * 1024); | |
1387 | err = fastrpc_buf_alloc(fl, fl->sctx->dev, memlen, | |
1388 | &imem); | |
b49f6d83 TE |
1389 | if (err) |
1390 | goto err_alloc; | |
d73f71c7 SK |
1391 | |
1392 | fl->init_mem = imem; | |
1393 | args[0].ptr = (u64)(uintptr_t)&inbuf; | |
1394 | args[0].length = sizeof(inbuf); | |
1395 | args[0].fd = -1; | |
1396 | ||
1397 | args[1].ptr = (u64)(uintptr_t)current->comm; | |
1398 | args[1].length = inbuf.namelen; | |
1399 | args[1].fd = -1; | |
1400 | ||
1401 | args[2].ptr = (u64) init.file; | |
1402 | args[2].length = inbuf.filelen; | |
1403 | args[2].fd = init.filefd; | |
1404 | ||
1405 | pages[0].addr = imem->phys; | |
1406 | pages[0].size = imem->size; | |
1407 | ||
1408 | args[3].ptr = (u64)(uintptr_t) pages; | |
1409 | args[3].length = 1 * sizeof(*pages); | |
1410 | args[3].fd = -1; | |
1411 | ||
1412 | args[4].ptr = (u64)(uintptr_t)&inbuf.attrs; | |
1413 | args[4].length = sizeof(inbuf.attrs); | |
1414 | args[4].fd = -1; | |
1415 | ||
1416 | args[5].ptr = (u64)(uintptr_t) &inbuf.siglen; | |
1417 | args[5].length = sizeof(inbuf.siglen); | |
1418 | args[5].fd = -1; | |
1419 | ||
1420 | sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_CREATE, 4, 0); | |
1421 | if (init.attrs) | |
1422 | sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_CREATE_ATTR, 6, 0); | |
1423 | ||
1424 | err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, | |
1425 | sc, args); | |
b49f6d83 TE |
1426 | if (err) |
1427 | goto err_invoke; | |
1428 | ||
1429 | kfree(args); | |
d73f71c7 | 1430 | |
b49f6d83 TE |
1431 | return 0; |
1432 | ||
1433 | err_invoke: | |
1434 | fl->init_mem = NULL; | |
1435 | fastrpc_buf_free(imem); | |
1436 | err_alloc: | |
1437 | if (map) { | |
1438 | spin_lock(&fl->lock); | |
1439 | list_del(&map->node); | |
1440 | spin_unlock(&fl->lock); | |
d73f71c7 | 1441 | fastrpc_map_put(map); |
d73f71c7 | 1442 | } |
b49f6d83 | 1443 | err: |
d73f71c7 SK |
1444 | kfree(args); |
1445 | ||
1446 | return err; | |
1447 | } | |
1448 | ||
f6f9279f SK |
1449 | static struct fastrpc_session_ctx *fastrpc_session_alloc( |
1450 | struct fastrpc_channel_ctx *cctx) | |
1451 | { | |
1452 | struct fastrpc_session_ctx *session = NULL; | |
977e6c8d | 1453 | unsigned long flags; |
f6f9279f SK |
1454 | int i; |
1455 | ||
977e6c8d | 1456 | spin_lock_irqsave(&cctx->lock, flags); |
f6f9279f SK |
1457 | for (i = 0; i < cctx->sesscount; i++) { |
1458 | if (!cctx->session[i].used && cctx->session[i].valid) { | |
1459 | cctx->session[i].used = true; | |
1460 | session = &cctx->session[i]; | |
1461 | break; | |
1462 | } | |
1463 | } | |
977e6c8d | 1464 | spin_unlock_irqrestore(&cctx->lock, flags); |
f6f9279f SK |
1465 | |
1466 | return session; | |
1467 | } | |
1468 | ||
1469 | static void fastrpc_session_free(struct fastrpc_channel_ctx *cctx, | |
1470 | struct fastrpc_session_ctx *session) | |
1471 | { | |
977e6c8d SK |
1472 | unsigned long flags; |
1473 | ||
1474 | spin_lock_irqsave(&cctx->lock, flags); | |
f6f9279f | 1475 | session->used = false; |
977e6c8d | 1476 | spin_unlock_irqrestore(&cctx->lock, flags); |
f6f9279f SK |
1477 | } |
1478 | ||
d73f71c7 SK |
1479 | static int fastrpc_release_current_dsp_process(struct fastrpc_user *fl) |
1480 | { | |
1481 | struct fastrpc_invoke_args args[1]; | |
1482 | int tgid = 0; | |
1483 | u32 sc; | |
1484 | ||
1485 | tgid = fl->tgid; | |
1486 | args[0].ptr = (u64)(uintptr_t) &tgid; | |
1487 | args[0].length = sizeof(tgid); | |
1488 | args[0].fd = -1; | |
d73f71c7 SK |
1489 | sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_RELEASE, 1, 0); |
1490 | ||
1491 | return fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, | |
1492 | sc, &args[0]); | |
1493 | } | |
1494 | ||
f6f9279f SK |
1495 | static int fastrpc_device_release(struct inode *inode, struct file *file) |
1496 | { | |
1497 | struct fastrpc_user *fl = (struct fastrpc_user *)file->private_data; | |
1498 | struct fastrpc_channel_ctx *cctx = fl->cctx; | |
c68cfb71 SK |
1499 | struct fastrpc_invoke_ctx *ctx, *n; |
1500 | struct fastrpc_map *map, *m; | |
2419e55e | 1501 | struct fastrpc_buf *buf, *b; |
977e6c8d | 1502 | unsigned long flags; |
f6f9279f | 1503 | |
d73f71c7 SK |
1504 | fastrpc_release_current_dsp_process(fl); |
1505 | ||
977e6c8d | 1506 | spin_lock_irqsave(&cctx->lock, flags); |
f6f9279f | 1507 | list_del(&fl->user); |
977e6c8d | 1508 | spin_unlock_irqrestore(&cctx->lock, flags); |
f6f9279f | 1509 | |
c68cfb71 SK |
1510 | if (fl->init_mem) |
1511 | fastrpc_buf_free(fl->init_mem); | |
1512 | ||
1513 | list_for_each_entry_safe(ctx, n, &fl->pending, node) { | |
1514 | list_del(&ctx->node); | |
1515 | fastrpc_context_put(ctx); | |
1516 | } | |
1517 | ||
1518 | list_for_each_entry_safe(map, m, &fl->maps, node) { | |
1519 | list_del(&map->node); | |
1520 | fastrpc_map_put(map); | |
1521 | } | |
1522 | ||
2419e55e JRO |
1523 | list_for_each_entry_safe(buf, b, &fl->mmaps, node) { |
1524 | list_del(&buf->node); | |
1525 | fastrpc_buf_free(buf); | |
1526 | } | |
1527 | ||
f6f9279f | 1528 | fastrpc_session_free(cctx, fl->sctx); |
278d56f9 | 1529 | fastrpc_channel_ctx_put(cctx); |
f6f9279f SK |
1530 | |
1531 | mutex_destroy(&fl->mutex); | |
1532 | kfree(fl); | |
1533 | file->private_data = NULL; | |
1534 | ||
1535 | return 0; | |
1536 | } | |
1537 | ||
1538 | static int fastrpc_device_open(struct inode *inode, struct file *filp) | |
1539 | { | |
965602ea SK |
1540 | struct fastrpc_channel_ctx *cctx; |
1541 | struct fastrpc_device *fdevice; | |
f6f9279f | 1542 | struct fastrpc_user *fl = NULL; |
977e6c8d | 1543 | unsigned long flags; |
f6f9279f | 1544 | |
965602ea SK |
1545 | fdevice = miscdev_to_fdevice(filp->private_data); |
1546 | cctx = fdevice->cctx; | |
1547 | ||
f6f9279f SK |
1548 | fl = kzalloc(sizeof(*fl), GFP_KERNEL); |
1549 | if (!fl) | |
1550 | return -ENOMEM; | |
1551 | ||
278d56f9 BA |
1552 | /* Released in fastrpc_device_release() */ |
1553 | fastrpc_channel_ctx_get(cctx); | |
1554 | ||
f6f9279f SK |
1555 | filp->private_data = fl; |
1556 | spin_lock_init(&fl->lock); | |
1557 | mutex_init(&fl->mutex); | |
1558 | INIT_LIST_HEAD(&fl->pending); | |
1559 | INIT_LIST_HEAD(&fl->maps); | |
2419e55e | 1560 | INIT_LIST_HEAD(&fl->mmaps); |
f6f9279f SK |
1561 | INIT_LIST_HEAD(&fl->user); |
1562 | fl->tgid = current->tgid; | |
1563 | fl->cctx = cctx; | |
7f1f4812 | 1564 | fl->is_secure_dev = fdevice->secure; |
7c11df42 TE |
1565 | |
1566 | fl->sctx = fastrpc_session_alloc(cctx); | |
1567 | if (!fl->sctx) { | |
1568 | dev_err(&cctx->rpdev->dev, "No session available\n"); | |
1569 | mutex_destroy(&fl->mutex); | |
1570 | kfree(fl); | |
1571 | ||
1572 | return -EBUSY; | |
1573 | } | |
1574 | ||
977e6c8d | 1575 | spin_lock_irqsave(&cctx->lock, flags); |
f6f9279f | 1576 | list_add_tail(&fl->user, &cctx->users); |
977e6c8d | 1577 | spin_unlock_irqrestore(&cctx->lock, flags); |
f6f9279f SK |
1578 | |
1579 | return 0; | |
1580 | } | |
1581 | ||
6cffd795 SK |
1582 | static int fastrpc_dmabuf_alloc(struct fastrpc_user *fl, char __user *argp) |
1583 | { | |
1584 | struct fastrpc_alloc_dma_buf bp; | |
1585 | DEFINE_DMA_BUF_EXPORT_INFO(exp_info); | |
1586 | struct fastrpc_buf *buf = NULL; | |
1587 | int err; | |
1588 | ||
1589 | if (copy_from_user(&bp, argp, sizeof(bp))) | |
1590 | return -EFAULT; | |
1591 | ||
1592 | err = fastrpc_buf_alloc(fl, fl->sctx->dev, bp.size, &buf); | |
1593 | if (err) | |
1594 | return err; | |
1595 | exp_info.ops = &fastrpc_dma_buf_ops; | |
1596 | exp_info.size = bp.size; | |
1597 | exp_info.flags = O_RDWR; | |
1598 | exp_info.priv = buf; | |
1599 | buf->dmabuf = dma_buf_export(&exp_info); | |
1600 | if (IS_ERR(buf->dmabuf)) { | |
1601 | err = PTR_ERR(buf->dmabuf); | |
1602 | fastrpc_buf_free(buf); | |
1603 | return err; | |
1604 | } | |
1605 | ||
1606 | bp.fd = dma_buf_fd(buf->dmabuf, O_ACCMODE); | |
1607 | if (bp.fd < 0) { | |
1608 | dma_buf_put(buf->dmabuf); | |
1609 | return -EINVAL; | |
1610 | } | |
1611 | ||
1612 | if (copy_to_user(argp, &bp, sizeof(bp))) { | |
46963e2e MK |
1613 | /* |
1614 | * The usercopy failed, but we can't do much about it, as | |
1615 | * dma_buf_fd() already called fd_install() and made the | |
1616 | * file descriptor accessible for the current process. It | |
1617 | * might already be closed and dmabuf no longer valid when | |
1618 | * we reach this point. Therefore "leak" the fd and rely on | |
1619 | * the process exit path to do any required cleanup. | |
1620 | */ | |
6cffd795 SK |
1621 | return -EFAULT; |
1622 | } | |
1623 | ||
6cffd795 SK |
1624 | return 0; |
1625 | } | |
1626 | ||
6010d9be | 1627 | static int fastrpc_init_attach(struct fastrpc_user *fl, int pd) |
d73f71c7 SK |
1628 | { |
1629 | struct fastrpc_invoke_args args[1]; | |
1630 | int tgid = fl->tgid; | |
1631 | u32 sc; | |
1632 | ||
1633 | args[0].ptr = (u64)(uintptr_t) &tgid; | |
1634 | args[0].length = sizeof(tgid); | |
1635 | args[0].fd = -1; | |
d73f71c7 | 1636 | sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_ATTACH, 1, 0); |
6010d9be | 1637 | fl->pd = pd; |
d73f71c7 SK |
1638 | |
1639 | return fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, | |
1640 | sc, &args[0]); | |
1641 | } | |
1642 | ||
c68cfb71 SK |
1643 | static int fastrpc_invoke(struct fastrpc_user *fl, char __user *argp) |
1644 | { | |
1645 | struct fastrpc_invoke_args *args = NULL; | |
1646 | struct fastrpc_invoke inv; | |
1647 | u32 nscalars; | |
1648 | int err; | |
1649 | ||
1650 | if (copy_from_user(&inv, argp, sizeof(inv))) | |
1651 | return -EFAULT; | |
1652 | ||
1653 | /* nscalars is truncated here to max supported value */ | |
1654 | nscalars = REMOTE_SCALARS_LENGTH(inv.sc); | |
1655 | if (nscalars) { | |
1656 | args = kcalloc(nscalars, sizeof(*args), GFP_KERNEL); | |
1657 | if (!args) | |
1658 | return -ENOMEM; | |
1659 | ||
1660 | if (copy_from_user(args, (void __user *)(uintptr_t)inv.args, | |
1661 | nscalars * sizeof(*args))) { | |
1662 | kfree(args); | |
1663 | return -EFAULT; | |
1664 | } | |
1665 | } | |
1666 | ||
1667 | err = fastrpc_internal_invoke(fl, false, inv.handle, inv.sc, args); | |
1668 | kfree(args); | |
1669 | ||
1670 | return err; | |
1671 | } | |
1672 | ||
6c16fd8b J |
1673 | static int fastrpc_get_info_from_dsp(struct fastrpc_user *fl, uint32_t *dsp_attr_buf, |
1674 | uint32_t dsp_attr_buf_len) | |
1675 | { | |
1676 | struct fastrpc_invoke_args args[2] = { 0 }; | |
1677 | ||
1678 | /* Capability filled in userspace */ | |
1679 | dsp_attr_buf[0] = 0; | |
1680 | ||
1681 | args[0].ptr = (u64)(uintptr_t)&dsp_attr_buf_len; | |
1682 | args[0].length = sizeof(dsp_attr_buf_len); | |
1683 | args[0].fd = -1; | |
1684 | args[1].ptr = (u64)(uintptr_t)&dsp_attr_buf[1]; | |
1685 | args[1].length = dsp_attr_buf_len; | |
1686 | args[1].fd = -1; | |
f667f56b | 1687 | fl->pd = USER_PD; |
6c16fd8b J |
1688 | |
1689 | return fastrpc_internal_invoke(fl, true, FASTRPC_DSP_UTILITIES_HANDLE, | |
1690 | FASTRPC_SCALARS(0, 1, 1), args); | |
1691 | } | |
1692 | ||
1693 | static int fastrpc_get_info_from_kernel(struct fastrpc_ioctl_capability *cap, | |
1694 | struct fastrpc_user *fl) | |
1695 | { | |
1696 | struct fastrpc_channel_ctx *cctx = fl->cctx; | |
1697 | uint32_t attribute_id = cap->attribute_id; | |
1698 | uint32_t *dsp_attributes; | |
1699 | unsigned long flags; | |
1700 | uint32_t domain = cap->domain; | |
1701 | int err; | |
1702 | ||
1703 | spin_lock_irqsave(&cctx->lock, flags); | |
1704 | /* check if we already have queried dsp for attributes */ | |
1705 | if (cctx->valid_attributes) { | |
1706 | spin_unlock_irqrestore(&cctx->lock, flags); | |
1707 | goto done; | |
1708 | } | |
1709 | spin_unlock_irqrestore(&cctx->lock, flags); | |
1710 | ||
1711 | dsp_attributes = kzalloc(FASTRPC_MAX_DSP_ATTRIBUTES_LEN, GFP_KERNEL); | |
1712 | if (!dsp_attributes) | |
1713 | return -ENOMEM; | |
1714 | ||
1715 | err = fastrpc_get_info_from_dsp(fl, dsp_attributes, FASTRPC_MAX_DSP_ATTRIBUTES_LEN); | |
1716 | if (err == DSP_UNSUPPORTED_API) { | |
1717 | dev_info(&cctx->rpdev->dev, | |
1718 | "Warning: DSP capabilities not supported on domain: %d\n", domain); | |
1719 | kfree(dsp_attributes); | |
1720 | return -EOPNOTSUPP; | |
1721 | } else if (err) { | |
1722 | dev_err(&cctx->rpdev->dev, "Error: dsp information is incorrect err: %d\n", err); | |
1723 | kfree(dsp_attributes); | |
1724 | return err; | |
1725 | } | |
1726 | ||
1727 | spin_lock_irqsave(&cctx->lock, flags); | |
1728 | memcpy(cctx->dsp_attributes, dsp_attributes, FASTRPC_MAX_DSP_ATTRIBUTES_LEN); | |
1729 | cctx->valid_attributes = true; | |
1730 | spin_unlock_irqrestore(&cctx->lock, flags); | |
1731 | kfree(dsp_attributes); | |
1732 | done: | |
1733 | cap->capability = cctx->dsp_attributes[attribute_id]; | |
1734 | return 0; | |
1735 | } | |
1736 | ||
1737 | static int fastrpc_get_dsp_info(struct fastrpc_user *fl, char __user *argp) | |
1738 | { | |
1739 | struct fastrpc_ioctl_capability cap = {0}; | |
1740 | int err = 0; | |
1741 | ||
1742 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
1743 | return -EFAULT; | |
1744 | ||
1745 | cap.capability = 0; | |
1746 | if (cap.domain >= FASTRPC_DEV_MAX) { | |
1747 | dev_err(&fl->cctx->rpdev->dev, "Error: Invalid domain id:%d, err:%d\n", | |
1748 | cap.domain, err); | |
1749 | return -ECHRNG; | |
1750 | } | |
1751 | ||
1752 | /* Fastrpc Capablities does not support modem domain */ | |
1753 | if (cap.domain == MDSP_DOMAIN_ID) { | |
1754 | dev_err(&fl->cctx->rpdev->dev, "Error: modem not supported %d\n", err); | |
1755 | return -ECHRNG; | |
1756 | } | |
1757 | ||
1758 | if (cap.attribute_id >= FASTRPC_MAX_DSP_ATTRIBUTES) { | |
1759 | dev_err(&fl->cctx->rpdev->dev, "Error: invalid attribute: %d, err: %d\n", | |
1760 | cap.attribute_id, err); | |
1761 | return -EOVERFLOW; | |
1762 | } | |
1763 | ||
1764 | err = fastrpc_get_info_from_kernel(&cap, fl); | |
1765 | if (err) | |
1766 | return err; | |
1767 | ||
1768 | if (copy_to_user(argp, &cap.capability, sizeof(cap.capability))) | |
1769 | return -EFAULT; | |
1770 | ||
1771 | return 0; | |
1772 | } | |
1773 | ||
72fa6f78 | 1774 | static int fastrpc_req_munmap_impl(struct fastrpc_user *fl, struct fastrpc_buf *buf) |
2419e55e JRO |
1775 | { |
1776 | struct fastrpc_invoke_args args[1] = { [0] = { 0 } }; | |
2419e55e JRO |
1777 | struct fastrpc_munmap_req_msg req_msg; |
1778 | struct device *dev = fl->sctx->dev; | |
1779 | int err; | |
1780 | u32 sc; | |
1781 | ||
2419e55e JRO |
1782 | req_msg.pgid = fl->tgid; |
1783 | req_msg.size = buf->size; | |
1784 | req_msg.vaddr = buf->raddr; | |
1785 | ||
1786 | args[0].ptr = (u64) (uintptr_t) &req_msg; | |
1787 | args[0].length = sizeof(req_msg); | |
1788 | ||
1789 | sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MUNMAP, 1, 0); | |
1790 | err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc, | |
1791 | &args[0]); | |
1792 | if (!err) { | |
1793 | dev_dbg(dev, "unmmap\tpt 0x%09lx OK\n", buf->raddr); | |
1794 | spin_lock(&fl->lock); | |
1795 | list_del(&buf->node); | |
1796 | spin_unlock(&fl->lock); | |
1797 | fastrpc_buf_free(buf); | |
1798 | } else { | |
1799 | dev_err(dev, "unmmap\tpt 0x%09lx ERROR\n", buf->raddr); | |
1800 | } | |
1801 | ||
1802 | return err; | |
1803 | } | |
1804 | ||
1805 | static int fastrpc_req_munmap(struct fastrpc_user *fl, char __user *argp) | |
1806 | { | |
72fa6f78 | 1807 | struct fastrpc_buf *buf = NULL, *iter, *b; |
2419e55e | 1808 | struct fastrpc_req_munmap req; |
72fa6f78 | 1809 | struct device *dev = fl->sctx->dev; |
2419e55e JRO |
1810 | |
1811 | if (copy_from_user(&req, argp, sizeof(req))) | |
1812 | return -EFAULT; | |
1813 | ||
72fa6f78 AV |
1814 | spin_lock(&fl->lock); |
1815 | list_for_each_entry_safe(iter, b, &fl->mmaps, node) { | |
1816 | if ((iter->raddr == req.vaddrout) && (iter->size == req.size)) { | |
1817 | buf = iter; | |
1818 | break; | |
1819 | } | |
1820 | } | |
1821 | spin_unlock(&fl->lock); | |
1822 | ||
1823 | if (!buf) { | |
1824 | dev_err(dev, "mmap\t\tpt 0x%09llx [len 0x%08llx] not in list\n", | |
1825 | req.vaddrout, req.size); | |
1826 | return -EINVAL; | |
1827 | } | |
1828 | ||
1829 | return fastrpc_req_munmap_impl(fl, buf); | |
2419e55e JRO |
1830 | } |
1831 | ||
1832 | static int fastrpc_req_mmap(struct fastrpc_user *fl, char __user *argp) | |
1833 | { | |
1834 | struct fastrpc_invoke_args args[3] = { [0 ... 2] = { 0 } }; | |
1835 | struct fastrpc_buf *buf = NULL; | |
1836 | struct fastrpc_mmap_req_msg req_msg; | |
1837 | struct fastrpc_mmap_rsp_msg rsp_msg; | |
2419e55e JRO |
1838 | struct fastrpc_phy_page pages; |
1839 | struct fastrpc_req_mmap req; | |
1840 | struct device *dev = fl->sctx->dev; | |
1841 | int err; | |
1842 | u32 sc; | |
1843 | ||
1844 | if (copy_from_user(&req, argp, sizeof(req))) | |
1845 | return -EFAULT; | |
1846 | ||
532ad70c | 1847 | if (req.flags != ADSP_MMAP_ADD_PAGES && req.flags != ADSP_MMAP_REMOTE_HEAP_ADDR) { |
2419e55e | 1848 | dev_err(dev, "flag not supported 0x%x\n", req.flags); |
532ad70c | 1849 | |
2419e55e JRO |
1850 | return -EINVAL; |
1851 | } | |
1852 | ||
1853 | if (req.vaddrin) { | |
1854 | dev_err(dev, "adding user allocated pages is not supported\n"); | |
1855 | return -EINVAL; | |
1856 | } | |
1857 | ||
1858 | err = fastrpc_buf_alloc(fl, fl->sctx->dev, req.size, &buf); | |
1859 | if (err) { | |
1860 | dev_err(dev, "failed to allocate buffer\n"); | |
1861 | return err; | |
1862 | } | |
1863 | ||
1864 | req_msg.pgid = fl->tgid; | |
1865 | req_msg.flags = req.flags; | |
1866 | req_msg.vaddr = req.vaddrin; | |
1867 | req_msg.num = sizeof(pages); | |
1868 | ||
1869 | args[0].ptr = (u64) (uintptr_t) &req_msg; | |
1870 | args[0].length = sizeof(req_msg); | |
1871 | ||
1872 | pages.addr = buf->phys; | |
1873 | pages.size = buf->size; | |
1874 | ||
1875 | args[1].ptr = (u64) (uintptr_t) &pages; | |
1876 | args[1].length = sizeof(pages); | |
1877 | ||
1878 | args[2].ptr = (u64) (uintptr_t) &rsp_msg; | |
1879 | args[2].length = sizeof(rsp_msg); | |
1880 | ||
1881 | sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MMAP, 2, 1); | |
1882 | err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc, | |
1883 | &args[0]); | |
1884 | if (err) { | |
1885 | dev_err(dev, "mmap error (len 0x%08llx)\n", buf->size); | |
1886 | goto err_invoke; | |
1887 | } | |
1888 | ||
1889 | /* update the buffer to be able to deallocate the memory on the DSP */ | |
1890 | buf->raddr = (uintptr_t) rsp_msg.vaddr; | |
1891 | ||
1892 | /* let the client know the address to use */ | |
1893 | req.vaddrout = rsp_msg.vaddr; | |
1894 | ||
532ad70c AV |
1895 | /* Add memory to static PD pool, protection thru hypervisor */ |
1896 | if (req.flags != ADSP_MMAP_REMOTE_HEAP_ADDR && fl->cctx->vmcount) { | |
1897 | struct qcom_scm_vmperm perm; | |
532ad70c AV |
1898 | |
1899 | perm.vmid = QCOM_SCM_VMID_HLOS; | |
1900 | perm.perm = QCOM_SCM_PERM_RWX; | |
1901 | err = qcom_scm_assign_mem(buf->phys, buf->size, | |
1902 | &(fl->cctx->vmperms[0].vmid), &perm, 1); | |
1903 | if (err) { | |
1904 | dev_err(fl->sctx->dev, "Failed to assign memory phys 0x%llx size 0x%llx err %d", | |
1905 | buf->phys, buf->size, err); | |
1906 | goto err_assign; | |
1907 | } | |
1908 | } | |
1909 | ||
2419e55e JRO |
1910 | spin_lock(&fl->lock); |
1911 | list_add_tail(&buf->node, &fl->mmaps); | |
1912 | spin_unlock(&fl->lock); | |
1913 | ||
1914 | if (copy_to_user((void __user *)argp, &req, sizeof(req))) { | |
72fa6f78 AV |
1915 | err = -EFAULT; |
1916 | goto err_assign; | |
2419e55e JRO |
1917 | } |
1918 | ||
1919 | dev_dbg(dev, "mmap\t\tpt 0x%09lx OK [len 0x%08llx]\n", | |
1920 | buf->raddr, buf->size); | |
1921 | ||
1922 | return 0; | |
1923 | ||
72fa6f78 AV |
1924 | err_assign: |
1925 | fastrpc_req_munmap_impl(fl, buf); | |
2419e55e JRO |
1926 | err_invoke: |
1927 | fastrpc_buf_free(buf); | |
1928 | ||
1929 | return err; | |
1930 | } | |
1931 | ||
5c1b97c7 J |
1932 | static int fastrpc_req_mem_unmap_impl(struct fastrpc_user *fl, struct fastrpc_mem_unmap *req) |
1933 | { | |
1934 | struct fastrpc_invoke_args args[1] = { [0] = { 0 } }; | |
c5c07c59 | 1935 | struct fastrpc_map *map = NULL, *iter, *m; |
5c1b97c7 J |
1936 | struct fastrpc_mem_unmap_req_msg req_msg = { 0 }; |
1937 | int err = 0; | |
1938 | u32 sc; | |
1939 | struct device *dev = fl->sctx->dev; | |
1940 | ||
1941 | spin_lock(&fl->lock); | |
c5c07c59 SK |
1942 | list_for_each_entry_safe(iter, m, &fl->maps, node) { |
1943 | if ((req->fd < 0 || iter->fd == req->fd) && (iter->raddr == req->vaddr)) { | |
1944 | map = iter; | |
5c1b97c7 | 1945 | break; |
c5c07c59 | 1946 | } |
5c1b97c7 J |
1947 | } |
1948 | ||
1949 | spin_unlock(&fl->lock); | |
1950 | ||
1951 | if (!map) { | |
1952 | dev_err(dev, "map not in list\n"); | |
1953 | return -EINVAL; | |
1954 | } | |
1955 | ||
1956 | req_msg.pgid = fl->tgid; | |
1957 | req_msg.len = map->len; | |
1958 | req_msg.vaddrin = map->raddr; | |
1959 | req_msg.fd = map->fd; | |
1960 | ||
1961 | args[0].ptr = (u64) (uintptr_t) &req_msg; | |
1962 | args[0].length = sizeof(req_msg); | |
1963 | ||
1964 | sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MEM_UNMAP, 1, 0); | |
1965 | err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc, | |
1966 | &args[0]); | |
1967 | fastrpc_map_put(map); | |
1968 | if (err) | |
1969 | dev_err(dev, "unmmap\tpt fd = %d, 0x%09llx error\n", map->fd, map->raddr); | |
1970 | ||
1971 | return err; | |
1972 | } | |
1973 | ||
1974 | static int fastrpc_req_mem_unmap(struct fastrpc_user *fl, char __user *argp) | |
1975 | { | |
1976 | struct fastrpc_mem_unmap req; | |
1977 | ||
1978 | if (copy_from_user(&req, argp, sizeof(req))) | |
1979 | return -EFAULT; | |
1980 | ||
1981 | return fastrpc_req_mem_unmap_impl(fl, &req); | |
1982 | } | |
1983 | ||
1984 | static int fastrpc_req_mem_map(struct fastrpc_user *fl, char __user *argp) | |
1985 | { | |
1986 | struct fastrpc_invoke_args args[4] = { [0 ... 3] = { 0 } }; | |
1987 | struct fastrpc_mem_map_req_msg req_msg = { 0 }; | |
1988 | struct fastrpc_mmap_rsp_msg rsp_msg = { 0 }; | |
1989 | struct fastrpc_mem_unmap req_unmap = { 0 }; | |
1990 | struct fastrpc_phy_page pages = { 0 }; | |
1991 | struct fastrpc_mem_map req; | |
1992 | struct device *dev = fl->sctx->dev; | |
1993 | struct fastrpc_map *map = NULL; | |
1994 | int err; | |
1995 | u32 sc; | |
1996 | ||
1997 | if (copy_from_user(&req, argp, sizeof(req))) | |
1998 | return -EFAULT; | |
1999 | ||
2000 | /* create SMMU mapping */ | |
3abe3ab3 | 2001 | err = fastrpc_map_create(fl, req.fd, req.length, 0, &map); |
5c1b97c7 J |
2002 | if (err) { |
2003 | dev_err(dev, "failed to map buffer, fd = %d\n", req.fd); | |
2004 | return err; | |
2005 | } | |
2006 | ||
2007 | req_msg.pgid = fl->tgid; | |
2008 | req_msg.fd = req.fd; | |
2009 | req_msg.offset = req.offset; | |
2010 | req_msg.vaddrin = req.vaddrin; | |
2011 | map->va = (void *) (uintptr_t) req.vaddrin; | |
2012 | req_msg.flags = req.flags; | |
2013 | req_msg.num = sizeof(pages); | |
2014 | req_msg.data_len = 0; | |
2015 | ||
2016 | args[0].ptr = (u64) (uintptr_t) &req_msg; | |
2017 | args[0].length = sizeof(req_msg); | |
2018 | ||
2019 | pages.addr = map->phys; | |
2020 | pages.size = map->size; | |
2021 | ||
2022 | args[1].ptr = (u64) (uintptr_t) &pages; | |
2023 | args[1].length = sizeof(pages); | |
2024 | ||
2025 | args[2].ptr = (u64) (uintptr_t) &pages; | |
2026 | args[2].length = 0; | |
2027 | ||
2028 | args[3].ptr = (u64) (uintptr_t) &rsp_msg; | |
2029 | args[3].length = sizeof(rsp_msg); | |
2030 | ||
2031 | sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MEM_MAP, 3, 1); | |
2032 | err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc, &args[0]); | |
2033 | if (err) { | |
2034 | dev_err(dev, "mem mmap error, fd %d, vaddr %llx, size %lld\n", | |
2035 | req.fd, req.vaddrin, map->size); | |
2036 | goto err_invoke; | |
2037 | } | |
2038 | ||
2039 | /* update the buffer to be able to deallocate the memory on the DSP */ | |
2040 | map->raddr = rsp_msg.vaddr; | |
2041 | ||
2042 | /* let the client know the address to use */ | |
2043 | req.vaddrout = rsp_msg.vaddr; | |
2044 | ||
2045 | if (copy_to_user((void __user *)argp, &req, sizeof(req))) { | |
2046 | /* unmap the memory and release the buffer */ | |
2047 | req_unmap.vaddr = (uintptr_t) rsp_msg.vaddr; | |
2048 | req_unmap.length = map->size; | |
2049 | fastrpc_req_mem_unmap_impl(fl, &req_unmap); | |
2050 | return -EFAULT; | |
2051 | } | |
2052 | ||
2053 | return 0; | |
2054 | ||
2055 | err_invoke: | |
2056 | fastrpc_map_put(map); | |
2057 | ||
2058 | return err; | |
2059 | } | |
2060 | ||
c68cfb71 SK |
2061 | static long fastrpc_device_ioctl(struct file *file, unsigned int cmd, |
2062 | unsigned long arg) | |
2063 | { | |
2064 | struct fastrpc_user *fl = (struct fastrpc_user *)file->private_data; | |
2065 | char __user *argp = (char __user *)arg; | |
2066 | int err; | |
2067 | ||
2068 | switch (cmd) { | |
2069 | case FASTRPC_IOCTL_INVOKE: | |
2070 | err = fastrpc_invoke(fl, argp); | |
2071 | break; | |
d73f71c7 | 2072 | case FASTRPC_IOCTL_INIT_ATTACH: |
1959ab9e | 2073 | err = fastrpc_init_attach(fl, ROOT_PD); |
6010d9be JM |
2074 | break; |
2075 | case FASTRPC_IOCTL_INIT_ATTACH_SNS: | |
2076 | err = fastrpc_init_attach(fl, SENSORS_PD); | |
d73f71c7 | 2077 | break; |
08715610 AV |
2078 | case FASTRPC_IOCTL_INIT_CREATE_STATIC: |
2079 | err = fastrpc_init_create_static_process(fl, argp); | |
2080 | break; | |
d73f71c7 SK |
2081 | case FASTRPC_IOCTL_INIT_CREATE: |
2082 | err = fastrpc_init_create_process(fl, argp); | |
2083 | break; | |
6cffd795 SK |
2084 | case FASTRPC_IOCTL_ALLOC_DMA_BUFF: |
2085 | err = fastrpc_dmabuf_alloc(fl, argp); | |
2086 | break; | |
2419e55e JRO |
2087 | case FASTRPC_IOCTL_MMAP: |
2088 | err = fastrpc_req_mmap(fl, argp); | |
2089 | break; | |
2090 | case FASTRPC_IOCTL_MUNMAP: | |
2091 | err = fastrpc_req_munmap(fl, argp); | |
2092 | break; | |
5c1b97c7 J |
2093 | case FASTRPC_IOCTL_MEM_MAP: |
2094 | err = fastrpc_req_mem_map(fl, argp); | |
2095 | break; | |
2096 | case FASTRPC_IOCTL_MEM_UNMAP: | |
2097 | err = fastrpc_req_mem_unmap(fl, argp); | |
2098 | break; | |
6c16fd8b J |
2099 | case FASTRPC_IOCTL_GET_DSP_INFO: |
2100 | err = fastrpc_get_dsp_info(fl, argp); | |
2101 | break; | |
c68cfb71 SK |
2102 | default: |
2103 | err = -ENOTTY; | |
2104 | break; | |
2105 | } | |
2106 | ||
2107 | return err; | |
2108 | } | |
2109 | ||
f6f9279f SK |
2110 | static const struct file_operations fastrpc_fops = { |
2111 | .open = fastrpc_device_open, | |
2112 | .release = fastrpc_device_release, | |
c68cfb71 SK |
2113 | .unlocked_ioctl = fastrpc_device_ioctl, |
2114 | .compat_ioctl = fastrpc_device_ioctl, | |
f6f9279f SK |
2115 | }; |
2116 | ||
2117 | static int fastrpc_cb_probe(struct platform_device *pdev) | |
2118 | { | |
2119 | struct fastrpc_channel_ctx *cctx; | |
2120 | struct fastrpc_session_ctx *sess; | |
2121 | struct device *dev = &pdev->dev; | |
2122 | int i, sessions = 0; | |
977e6c8d | 2123 | unsigned long flags; |
01b76c32 | 2124 | int rc; |
f6f9279f SK |
2125 | |
2126 | cctx = dev_get_drvdata(dev->parent); | |
2127 | if (!cctx) | |
2128 | return -EINVAL; | |
2129 | ||
2130 | of_property_read_u32(dev->of_node, "qcom,nsessions", &sessions); | |
2131 | ||
977e6c8d | 2132 | spin_lock_irqsave(&cctx->lock, flags); |
9baa1415 JH |
2133 | if (cctx->sesscount >= FASTRPC_MAX_SESSIONS) { |
2134 | dev_err(&pdev->dev, "too many sessions\n"); | |
2135 | spin_unlock_irqrestore(&cctx->lock, flags); | |
2136 | return -ENOSPC; | |
2137 | } | |
d245f43a | 2138 | sess = &cctx->session[cctx->sesscount++]; |
f6f9279f SK |
2139 | sess->used = false; |
2140 | sess->valid = true; | |
2141 | sess->dev = dev; | |
2142 | dev_set_drvdata(dev, sess); | |
2143 | ||
2144 | if (of_property_read_u32(dev->of_node, "reg", &sess->sid)) | |
2145 | dev_info(dev, "FastRPC Session ID not specified in DT\n"); | |
2146 | ||
2147 | if (sessions > 0) { | |
2148 | struct fastrpc_session_ctx *dup_sess; | |
2149 | ||
2150 | for (i = 1; i < sessions; i++) { | |
d245f43a | 2151 | if (cctx->sesscount >= FASTRPC_MAX_SESSIONS) |
f6f9279f | 2152 | break; |
d245f43a | 2153 | dup_sess = &cctx->session[cctx->sesscount++]; |
f6f9279f SK |
2154 | memcpy(dup_sess, sess, sizeof(*dup_sess)); |
2155 | } | |
2156 | } | |
977e6c8d | 2157 | spin_unlock_irqrestore(&cctx->lock, flags); |
01b76c32 BY |
2158 | rc = dma_set_mask(dev, DMA_BIT_MASK(32)); |
2159 | if (rc) { | |
2160 | dev_err(dev, "32-bit DMA enable failed\n"); | |
2161 | return rc; | |
2162 | } | |
f6f9279f SK |
2163 | |
2164 | return 0; | |
2165 | } | |
2166 | ||
2167 | static int fastrpc_cb_remove(struct platform_device *pdev) | |
2168 | { | |
2169 | struct fastrpc_channel_ctx *cctx = dev_get_drvdata(pdev->dev.parent); | |
2170 | struct fastrpc_session_ctx *sess = dev_get_drvdata(&pdev->dev); | |
977e6c8d | 2171 | unsigned long flags; |
f6f9279f SK |
2172 | int i; |
2173 | ||
977e6c8d | 2174 | spin_lock_irqsave(&cctx->lock, flags); |
f6f9279f SK |
2175 | for (i = 1; i < FASTRPC_MAX_SESSIONS; i++) { |
2176 | if (cctx->session[i].sid == sess->sid) { | |
2177 | cctx->session[i].valid = false; | |
2178 | cctx->sesscount--; | |
2179 | } | |
2180 | } | |
977e6c8d | 2181 | spin_unlock_irqrestore(&cctx->lock, flags); |
f6f9279f SK |
2182 | |
2183 | return 0; | |
2184 | } | |
2185 | ||
2186 | static const struct of_device_id fastrpc_match_table[] = { | |
2187 | { .compatible = "qcom,fastrpc-compute-cb", }, | |
2188 | {} | |
2189 | }; | |
2190 | ||
2191 | static struct platform_driver fastrpc_cb_driver = { | |
2192 | .probe = fastrpc_cb_probe, | |
2193 | .remove = fastrpc_cb_remove, | |
2194 | .driver = { | |
2195 | .name = "qcom,fastrpc-cb", | |
2196 | .of_match_table = fastrpc_match_table, | |
2197 | .suppress_bind_attrs = true, | |
2198 | }, | |
2199 | }; | |
2200 | ||
965602ea | 2201 | static int fastrpc_device_register(struct device *dev, struct fastrpc_channel_ctx *cctx, |
3abe3ab3 | 2202 | bool is_secured, const char *domain) |
965602ea SK |
2203 | { |
2204 | struct fastrpc_device *fdev; | |
2205 | int err; | |
2206 | ||
2207 | fdev = devm_kzalloc(dev, sizeof(*fdev), GFP_KERNEL); | |
2208 | if (!fdev) | |
2209 | return -ENOMEM; | |
2210 | ||
3abe3ab3 | 2211 | fdev->secure = is_secured; |
965602ea SK |
2212 | fdev->cctx = cctx; |
2213 | fdev->miscdev.minor = MISC_DYNAMIC_MINOR; | |
2214 | fdev->miscdev.fops = &fastrpc_fops; | |
3abe3ab3 SK |
2215 | fdev->miscdev.name = devm_kasprintf(dev, GFP_KERNEL, "fastrpc-%s%s", |
2216 | domain, is_secured ? "-secure" : ""); | |
965602ea | 2217 | err = misc_register(&fdev->miscdev); |
3abe3ab3 SK |
2218 | if (!err) { |
2219 | if (is_secured) | |
2220 | cctx->secure_fdevice = fdev; | |
2221 | else | |
2222 | cctx->fdevice = fdev; | |
2223 | } | |
965602ea SK |
2224 | |
2225 | return err; | |
2226 | } | |
2227 | ||
f6f9279f SK |
2228 | static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev) |
2229 | { | |
2230 | struct device *rdev = &rpdev->dev; | |
2231 | struct fastrpc_channel_ctx *data; | |
e90d9119 | 2232 | int i, err, domain_id = -1, vmcount; |
f6f9279f | 2233 | const char *domain; |
3abe3ab3 | 2234 | bool secure_dsp; |
e90d9119 | 2235 | unsigned int vmids[FASTRPC_MAX_VMIDS]; |
f6f9279f | 2236 | |
f6f9279f SK |
2237 | err = of_property_read_string(rdev->of_node, "label", &domain); |
2238 | if (err) { | |
2239 | dev_info(rdev, "FastRPC Domain not specified in DT\n"); | |
2240 | return err; | |
2241 | } | |
2242 | ||
2243 | for (i = 0; i <= CDSP_DOMAIN_ID; i++) { | |
2244 | if (!strcmp(domains[i], domain)) { | |
2245 | domain_id = i; | |
2246 | break; | |
2247 | } | |
2248 | } | |
2249 | ||
2250 | if (domain_id < 0) { | |
2251 | dev_info(rdev, "FastRPC Invalid Domain ID %d\n", domain_id); | |
2252 | return -EINVAL; | |
2253 | } | |
2254 | ||
1ce91d45 AV |
2255 | if (of_reserved_mem_device_init_by_idx(rdev, rdev->of_node, 0)) |
2256 | dev_info(rdev, "no reserved DMA memory for FASTRPC\n"); | |
2257 | ||
e90d9119 VKG |
2258 | vmcount = of_property_read_variable_u32_array(rdev->of_node, |
2259 | "qcom,vmids", &vmids[0], 0, FASTRPC_MAX_VMIDS); | |
2260 | if (vmcount < 0) | |
2261 | vmcount = 0; | |
2262 | else if (!qcom_scm_is_available()) | |
2263 | return -EPROBE_DEFER; | |
2264 | ||
278d56f9 BA |
2265 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
2266 | if (!data) | |
2267 | return -ENOMEM; | |
2268 | ||
e90d9119 VKG |
2269 | if (vmcount) { |
2270 | data->vmcount = vmcount; | |
2271 | data->perms = BIT(QCOM_SCM_VMID_HLOS); | |
2272 | for (i = 0; i < data->vmcount; i++) { | |
2273 | data->vmperms[i].vmid = vmids[i]; | |
2274 | data->vmperms[i].perm = QCOM_SCM_PERM_RWX; | |
2275 | } | |
2276 | } | |
3abe3ab3 SK |
2277 | |
2278 | secure_dsp = !(of_property_read_bool(rdev->of_node, "qcom,non-secure-domain")); | |
2279 | data->secure = secure_dsp; | |
2280 | ||
2281 | switch (domain_id) { | |
2282 | case ADSP_DOMAIN_ID: | |
2283 | case MDSP_DOMAIN_ID: | |
2284 | case SDSP_DOMAIN_ID: | |
7f1f4812 J |
2285 | /* Unsigned PD offloading is only supported on CDSP*/ |
2286 | data->unsigned_support = false; | |
3abe3ab3 SK |
2287 | err = fastrpc_device_register(rdev, data, secure_dsp, domains[domain_id]); |
2288 | if (err) | |
2289 | goto fdev_error; | |
2290 | break; | |
2291 | case CDSP_DOMAIN_ID: | |
7f1f4812 | 2292 | data->unsigned_support = true; |
3abe3ab3 SK |
2293 | /* Create both device nodes so that we can allow both Signed and Unsigned PD */ |
2294 | err = fastrpc_device_register(rdev, data, true, domains[domain_id]); | |
2295 | if (err) | |
2296 | goto fdev_error; | |
2297 | ||
2298 | err = fastrpc_device_register(rdev, data, false, domains[domain_id]); | |
2299 | if (err) | |
2300 | goto fdev_error; | |
2301 | break; | |
2302 | default: | |
2303 | err = -EINVAL; | |
2304 | goto fdev_error; | |
0978de9f | 2305 | } |
f6f9279f | 2306 | |
278d56f9 BA |
2307 | kref_init(&data->refcount); |
2308 | ||
f6f9279f | 2309 | dev_set_drvdata(&rpdev->dev, data); |
9bde43a0 | 2310 | rdev->dma_mask = &data->dma_mask; |
f6f9279f SK |
2311 | dma_set_mask_and_coherent(rdev, DMA_BIT_MASK(32)); |
2312 | INIT_LIST_HEAD(&data->users); | |
76e8e4ac | 2313 | INIT_LIST_HEAD(&data->invoke_interrupted_mmaps); |
f6f9279f SK |
2314 | spin_lock_init(&data->lock); |
2315 | idr_init(&data->ctx_idr); | |
2316 | data->domain_id = domain_id; | |
2317 | data->rpdev = rpdev; | |
2318 | ||
2319 | return of_platform_populate(rdev->of_node, NULL, NULL, rdev); | |
3abe3ab3 SK |
2320 | fdev_error: |
2321 | kfree(data); | |
2322 | return err; | |
f6f9279f SK |
2323 | } |
2324 | ||
c68cfb71 SK |
2325 | static void fastrpc_notify_users(struct fastrpc_user *user) |
2326 | { | |
2327 | struct fastrpc_invoke_ctx *ctx; | |
2328 | ||
2329 | spin_lock(&user->lock); | |
2330 | list_for_each_entry(ctx, &user->pending, node) | |
2331 | complete(&ctx->work); | |
2332 | spin_unlock(&user->lock); | |
2333 | } | |
2334 | ||
f6f9279f SK |
2335 | static void fastrpc_rpmsg_remove(struct rpmsg_device *rpdev) |
2336 | { | |
2337 | struct fastrpc_channel_ctx *cctx = dev_get_drvdata(&rpdev->dev); | |
76e8e4ac | 2338 | struct fastrpc_buf *buf, *b; |
c68cfb71 | 2339 | struct fastrpc_user *user; |
977e6c8d | 2340 | unsigned long flags; |
c68cfb71 | 2341 | |
977e6c8d | 2342 | spin_lock_irqsave(&cctx->lock, flags); |
c68cfb71 SK |
2343 | list_for_each_entry(user, &cctx->users, user) |
2344 | fastrpc_notify_users(user); | |
977e6c8d | 2345 | spin_unlock_irqrestore(&cctx->lock, flags); |
f6f9279f | 2346 | |
965602ea SK |
2347 | if (cctx->fdevice) |
2348 | misc_deregister(&cctx->fdevice->miscdev); | |
2349 | ||
3abe3ab3 SK |
2350 | if (cctx->secure_fdevice) |
2351 | misc_deregister(&cctx->secure_fdevice->miscdev); | |
2352 | ||
76e8e4ac AV |
2353 | list_for_each_entry_safe(buf, b, &cctx->invoke_interrupted_mmaps, node) |
2354 | list_del(&buf->node); | |
2355 | ||
08715610 AV |
2356 | if (cctx->remote_heap) |
2357 | fastrpc_buf_free(cctx->remote_heap); | |
2358 | ||
f6f9279f | 2359 | of_platform_depopulate(&rpdev->dev); |
278d56f9 | 2360 | |
2e369878 | 2361 | cctx->rpdev = NULL; |
278d56f9 | 2362 | fastrpc_channel_ctx_put(cctx); |
f6f9279f SK |
2363 | } |
2364 | ||
2365 | static int fastrpc_rpmsg_callback(struct rpmsg_device *rpdev, void *data, | |
2366 | int len, void *priv, u32 addr) | |
2367 | { | |
c68cfb71 SK |
2368 | struct fastrpc_channel_ctx *cctx = dev_get_drvdata(&rpdev->dev); |
2369 | struct fastrpc_invoke_rsp *rsp = data; | |
2370 | struct fastrpc_invoke_ctx *ctx; | |
2371 | unsigned long flags; | |
2372 | unsigned long ctxid; | |
2373 | ||
2374 | if (len < sizeof(*rsp)) | |
2375 | return -EINVAL; | |
2376 | ||
2377 | ctxid = ((rsp->ctx & FASTRPC_CTXID_MASK) >> 4); | |
2378 | ||
2379 | spin_lock_irqsave(&cctx->lock, flags); | |
2380 | ctx = idr_find(&cctx->ctx_idr, ctxid); | |
2381 | spin_unlock_irqrestore(&cctx->lock, flags); | |
2382 | ||
2383 | if (!ctx) { | |
2384 | dev_err(&rpdev->dev, "No context ID matches response\n"); | |
2385 | return -ENOENT; | |
2386 | } | |
2387 | ||
2388 | ctx->retval = rsp->retval; | |
2389 | complete(&ctx->work); | |
8e7389c7 TE |
2390 | |
2391 | /* | |
2392 | * The DMA buffer associated with the context cannot be freed in | |
2393 | * interrupt context so schedule it through a worker thread to | |
2394 | * avoid a kernel BUG. | |
2395 | */ | |
2396 | schedule_work(&ctx->put_work); | |
c68cfb71 | 2397 | |
f6f9279f SK |
2398 | return 0; |
2399 | } | |
2400 | ||
2401 | static const struct of_device_id fastrpc_rpmsg_of_match[] = { | |
2402 | { .compatible = "qcom,fastrpc" }, | |
2403 | { }, | |
2404 | }; | |
2405 | MODULE_DEVICE_TABLE(of, fastrpc_rpmsg_of_match); | |
2406 | ||
2407 | static struct rpmsg_driver fastrpc_driver = { | |
2408 | .probe = fastrpc_rpmsg_probe, | |
2409 | .remove = fastrpc_rpmsg_remove, | |
2410 | .callback = fastrpc_rpmsg_callback, | |
2411 | .drv = { | |
2412 | .name = "qcom,fastrpc", | |
2413 | .of_match_table = fastrpc_rpmsg_of_match, | |
2414 | }, | |
2415 | }; | |
2416 | ||
2417 | static int fastrpc_init(void) | |
2418 | { | |
2419 | int ret; | |
2420 | ||
2421 | ret = platform_driver_register(&fastrpc_cb_driver); | |
2422 | if (ret < 0) { | |
2423 | pr_err("fastrpc: failed to register cb driver\n"); | |
2424 | return ret; | |
2425 | } | |
2426 | ||
2427 | ret = register_rpmsg_driver(&fastrpc_driver); | |
2428 | if (ret < 0) { | |
2429 | pr_err("fastrpc: failed to register rpmsg driver\n"); | |
2430 | platform_driver_unregister(&fastrpc_cb_driver); | |
2431 | return ret; | |
2432 | } | |
2433 | ||
2434 | return 0; | |
2435 | } | |
2436 | module_init(fastrpc_init); | |
2437 | ||
2438 | static void fastrpc_exit(void) | |
2439 | { | |
2440 | platform_driver_unregister(&fastrpc_cb_driver); | |
2441 | unregister_rpmsg_driver(&fastrpc_driver); | |
2442 | } | |
2443 | module_exit(fastrpc_exit); | |
2444 | ||
2445 | MODULE_LICENSE("GPL v2"); | |
16b0314a | 2446 | MODULE_IMPORT_NS(DMA_BUF); |