Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1 | /* |
Sathish Ambley | ae5ee54 | 2017-01-16 22:24:23 -0800 | [diff] [blame] | 2 | * Copyright (c) 2012-2017, The Linux Foundation. All rights reserved. |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 and |
| 6 | * only version 2 as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | */ |
| 14 | #include <linux/dma-buf.h> |
| 15 | #include <linux/dma-mapping.h> |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/completion.h> |
| 18 | #include <linux/pagemap.h> |
| 19 | #include <linux/mm.h> |
| 20 | #include <linux/fs.h> |
| 21 | #include <linux/sched.h> |
| 22 | #include <linux/module.h> |
| 23 | #include <linux/cdev.h> |
| 24 | #include <linux/list.h> |
| 25 | #include <linux/hash.h> |
| 26 | #include <linux/msm_ion.h> |
| 27 | #include <soc/qcom/secure_buffer.h> |
| 28 | #include <soc/qcom/glink.h> |
| 29 | #include <soc/qcom/subsystem_notif.h> |
| 30 | #include <soc/qcom/subsystem_restart.h> |
| 31 | #include <linux/scatterlist.h> |
| 32 | #include <linux/fs.h> |
| 33 | #include <linux/uaccess.h> |
| 34 | #include <linux/device.h> |
| 35 | #include <linux/of.h> |
| 36 | #include <linux/of_address.h> |
| 37 | #include <linux/of_platform.h> |
| 38 | #include <linux/dma-contiguous.h> |
| 39 | #include <linux/cma.h> |
| 40 | #include <linux/iommu.h> |
| 41 | #include <linux/kref.h> |
| 42 | #include <linux/sort.h> |
| 43 | #include <linux/msm_dma_iommu_mapping.h> |
| 44 | #include <asm/dma-iommu.h> |
| 45 | #include "adsprpc_compat.h" |
| 46 | #include "adsprpc_shared.h" |
Sathish Ambley | 1ca6823 | 2017-01-19 10:32:55 -0800 | [diff] [blame] | 47 | #include <linux/debugfs.h> |
Tharun Kumar Merugu | 5f6ca61c | 2017-08-11 11:43:11 +0530 | [diff] [blame] | 48 | #include <linux/pm_qos.h> |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 49 | #define TZ_PIL_PROTECT_MEM_SUBSYS_ID 0x0C |
| 50 | #define TZ_PIL_CLEAR_PROTECT_MEM_SUBSYS_ID 0x0D |
| 51 | #define TZ_PIL_AUTH_QDSP6_PROC 1 |
| 52 | #define FASTRPC_ENOSUCH 39 |
| 53 | #define VMID_SSC_Q6 5 |
| 54 | #define VMID_ADSP_Q6 6 |
Sathish Ambley | 1ca6823 | 2017-01-19 10:32:55 -0800 | [diff] [blame] | 55 | #define DEBUGFS_SIZE 1024 |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 56 | |
| 57 | #define RPC_TIMEOUT (5 * HZ) |
| 58 | #define BALIGN 128 |
| 59 | #define NUM_CHANNELS 4 /* adsp, mdsp, slpi, cdsp*/ |
| 60 | #define NUM_SESSIONS 9 /*8 compute, 1 cpz*/ |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 61 | #define M_FDLIST (16) |
| 62 | #define M_CRCLIST (64) |
Tharun Kumar Merugu | d4d07948 | 2017-09-06 11:22:19 +0530 | [diff] [blame] | 63 | #define SESSION_ID_INDEX (30) |
c_mtharu | fdac689 | 2017-10-12 13:09:01 +0530 | [diff] [blame^] | 64 | #define FASTRPC_CTX_MAGIC (0xbeeddeed) |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 65 | |
| 66 | #define IS_CACHE_ALIGNED(x) (((x) & ((L1_CACHE_BYTES)-1)) == 0) |
| 67 | |
| 68 | #define FASTRPC_LINK_STATE_DOWN (0x0) |
| 69 | #define FASTRPC_LINK_STATE_UP (0x1) |
| 70 | #define FASTRPC_LINK_DISCONNECTED (0x0) |
| 71 | #define FASTRPC_LINK_CONNECTING (0x1) |
| 72 | #define FASTRPC_LINK_CONNECTED (0x3) |
| 73 | #define FASTRPC_LINK_DISCONNECTING (0x7) |
| 74 | |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 75 | #define PERF_KEYS "count:flush:map:copy:glink:getargs:putargs:invalidate:invoke" |
| 76 | #define FASTRPC_STATIC_HANDLE_LISTENER (3) |
| 77 | #define FASTRPC_STATIC_HANDLE_MAX (20) |
Tharun Kumar Merugu | 5f6ca61c | 2017-08-11 11:43:11 +0530 | [diff] [blame] | 78 | #define FASTRPC_LATENCY_CTRL_ENB (1) |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 79 | |
| 80 | #define PERF_END (void)0 |
| 81 | |
| 82 | #define PERF(enb, cnt, ff) \ |
| 83 | {\ |
| 84 | struct timespec startT = {0};\ |
| 85 | if (enb) {\ |
| 86 | getnstimeofday(&startT);\ |
| 87 | } \ |
| 88 | ff ;\ |
| 89 | if (enb) {\ |
| 90 | cnt += getnstimediff(&startT);\ |
| 91 | } \ |
| 92 | } |
| 93 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 94 | static int fastrpc_glink_open(int cid); |
| 95 | static void fastrpc_glink_close(void *chan, int cid); |
Sathish Ambley | 1ca6823 | 2017-01-19 10:32:55 -0800 | [diff] [blame] | 96 | static struct dentry *debugfs_root; |
| 97 | static struct dentry *debugfs_global_file; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 98 | |
| 99 | static inline uint64_t buf_page_start(uint64_t buf) |
| 100 | { |
| 101 | uint64_t start = (uint64_t) buf & PAGE_MASK; |
| 102 | return start; |
| 103 | } |
| 104 | |
| 105 | static inline uint64_t buf_page_offset(uint64_t buf) |
| 106 | { |
| 107 | uint64_t offset = (uint64_t) buf & (PAGE_SIZE - 1); |
| 108 | return offset; |
| 109 | } |
| 110 | |
| 111 | static inline int buf_num_pages(uint64_t buf, ssize_t len) |
| 112 | { |
| 113 | uint64_t start = buf_page_start(buf) >> PAGE_SHIFT; |
| 114 | uint64_t end = (((uint64_t) buf + len - 1) & PAGE_MASK) >> PAGE_SHIFT; |
| 115 | int nPages = end - start + 1; |
| 116 | return nPages; |
| 117 | } |
| 118 | |
| 119 | static inline uint64_t buf_page_size(uint32_t size) |
| 120 | { |
| 121 | uint64_t sz = (size + (PAGE_SIZE - 1)) & PAGE_MASK; |
| 122 | |
| 123 | return sz > PAGE_SIZE ? sz : PAGE_SIZE; |
| 124 | } |
| 125 | |
| 126 | static inline void *uint64_to_ptr(uint64_t addr) |
| 127 | { |
| 128 | void *ptr = (void *)((uintptr_t)addr); |
| 129 | |
| 130 | return ptr; |
| 131 | } |
| 132 | |
| 133 | static inline uint64_t ptr_to_uint64(void *ptr) |
| 134 | { |
| 135 | uint64_t addr = (uint64_t)((uintptr_t)ptr); |
| 136 | |
| 137 | return addr; |
| 138 | } |
| 139 | |
| 140 | struct fastrpc_file; |
| 141 | |
| 142 | struct fastrpc_buf { |
| 143 | struct hlist_node hn; |
| 144 | struct fastrpc_file *fl; |
| 145 | void *virt; |
| 146 | uint64_t phys; |
| 147 | ssize_t size; |
| 148 | }; |
| 149 | |
| 150 | struct fastrpc_ctx_lst; |
| 151 | |
| 152 | struct overlap { |
| 153 | uintptr_t start; |
| 154 | uintptr_t end; |
| 155 | int raix; |
| 156 | uintptr_t mstart; |
| 157 | uintptr_t mend; |
| 158 | uintptr_t offset; |
| 159 | }; |
| 160 | |
| 161 | struct smq_invoke_ctx { |
| 162 | struct hlist_node hn; |
| 163 | struct completion work; |
| 164 | int retval; |
| 165 | int pid; |
| 166 | int tgid; |
| 167 | remote_arg_t *lpra; |
| 168 | remote_arg64_t *rpra; |
| 169 | int *fds; |
| 170 | unsigned int *attrs; |
| 171 | struct fastrpc_mmap **maps; |
| 172 | struct fastrpc_buf *buf; |
| 173 | ssize_t used; |
| 174 | struct fastrpc_file *fl; |
| 175 | uint32_t sc; |
| 176 | struct overlap *overs; |
| 177 | struct overlap **overps; |
| 178 | struct smq_msg msg; |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 179 | uint32_t *crc; |
c_mtharu | fdac689 | 2017-10-12 13:09:01 +0530 | [diff] [blame^] | 180 | unsigned int magic; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 181 | }; |
| 182 | |
| 183 | struct fastrpc_ctx_lst { |
| 184 | struct hlist_head pending; |
| 185 | struct hlist_head interrupted; |
| 186 | }; |
| 187 | |
| 188 | struct fastrpc_smmu { |
| 189 | struct dma_iommu_mapping *mapping; |
| 190 | int cb; |
| 191 | int enabled; |
| 192 | int faults; |
| 193 | int secure; |
| 194 | int coherent; |
| 195 | }; |
| 196 | |
| 197 | struct fastrpc_session_ctx { |
| 198 | struct device *dev; |
| 199 | struct fastrpc_smmu smmu; |
| 200 | int used; |
| 201 | }; |
| 202 | |
| 203 | struct fastrpc_glink_info { |
| 204 | int link_state; |
| 205 | int port_state; |
| 206 | struct glink_open_config cfg; |
| 207 | struct glink_link_info link_info; |
| 208 | void *link_notify_handle; |
| 209 | }; |
| 210 | |
| 211 | struct fastrpc_channel_ctx { |
| 212 | char *name; |
| 213 | char *subsys; |
| 214 | void *chan; |
| 215 | struct device *dev; |
| 216 | struct fastrpc_session_ctx session[NUM_SESSIONS]; |
| 217 | struct completion work; |
Tharun Kumar Merugu | 53a8ec9 | 2017-07-14 15:52:49 +0530 | [diff] [blame] | 218 | struct completion workport; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 219 | struct notifier_block nb; |
| 220 | struct kref kref; |
| 221 | int sesscount; |
| 222 | int ssrcount; |
| 223 | void *handle; |
| 224 | int prevssrcount; |
| 225 | int vmid; |
| 226 | struct fastrpc_glink_info link; |
| 227 | }; |
| 228 | |
| 229 | struct fastrpc_apps { |
| 230 | struct fastrpc_channel_ctx *channel; |
| 231 | struct cdev cdev; |
| 232 | struct class *class; |
| 233 | struct mutex smd_mutex; |
| 234 | struct smq_phy_page range; |
| 235 | struct hlist_head maps; |
| 236 | dev_t dev_no; |
| 237 | int compat; |
| 238 | struct hlist_head drivers; |
| 239 | spinlock_t hlock; |
| 240 | struct ion_client *client; |
| 241 | struct device *dev; |
Tharun Kumar Merugu | 5f6ca61c | 2017-08-11 11:43:11 +0530 | [diff] [blame] | 242 | unsigned int latency; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 243 | }; |
| 244 | |
| 245 | struct fastrpc_mmap { |
| 246 | struct hlist_node hn; |
| 247 | struct fastrpc_file *fl; |
| 248 | struct fastrpc_apps *apps; |
| 249 | int fd; |
| 250 | uint32_t flags; |
| 251 | struct dma_buf *buf; |
| 252 | struct sg_table *table; |
| 253 | struct dma_buf_attachment *attach; |
| 254 | struct ion_handle *handle; |
| 255 | uint64_t phys; |
| 256 | ssize_t size; |
| 257 | uintptr_t va; |
| 258 | ssize_t len; |
| 259 | int refs; |
| 260 | uintptr_t raddr; |
| 261 | int uncached; |
| 262 | int secure; |
| 263 | uintptr_t attr; |
| 264 | }; |
| 265 | |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 266 | struct fastrpc_perf { |
| 267 | int64_t count; |
| 268 | int64_t flush; |
| 269 | int64_t map; |
| 270 | int64_t copy; |
| 271 | int64_t link; |
| 272 | int64_t getargs; |
| 273 | int64_t putargs; |
| 274 | int64_t invargs; |
| 275 | int64_t invoke; |
| 276 | }; |
| 277 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 278 | struct fastrpc_file { |
| 279 | struct hlist_node hn; |
| 280 | spinlock_t hlock; |
| 281 | struct hlist_head maps; |
| 282 | struct hlist_head bufs; |
| 283 | struct fastrpc_ctx_lst clst; |
| 284 | struct fastrpc_session_ctx *sctx; |
| 285 | struct fastrpc_session_ctx *secsctx; |
| 286 | uint32_t mode; |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 287 | uint32_t profile; |
Tharun Kumar Merugu | d4d07948 | 2017-09-06 11:22:19 +0530 | [diff] [blame] | 288 | int sessionid; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 289 | int tgid; |
| 290 | int cid; |
| 291 | int ssrcount; |
| 292 | int pd; |
tharun kumar | 9f899ea | 2017-07-03 17:07:03 +0530 | [diff] [blame] | 293 | int file_close; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 294 | struct fastrpc_apps *apps; |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 295 | struct fastrpc_perf perf; |
Sathish Ambley | 1ca6823 | 2017-01-19 10:32:55 -0800 | [diff] [blame] | 296 | struct dentry *debugfs_file; |
Tharun Kumar Merugu | 5f6ca61c | 2017-08-11 11:43:11 +0530 | [diff] [blame] | 297 | struct pm_qos_request pm_qos_req; |
| 298 | int qos_request; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 299 | }; |
| 300 | |
| 301 | static struct fastrpc_apps gfa; |
| 302 | |
| 303 | static struct fastrpc_channel_ctx gcinfo[NUM_CHANNELS] = { |
| 304 | { |
| 305 | .name = "adsprpc-smd", |
| 306 | .subsys = "adsp", |
| 307 | .link.link_info.edge = "lpass", |
| 308 | .link.link_info.transport = "smem", |
| 309 | }, |
| 310 | { |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 311 | .name = "mdsprpc-smd", |
| 312 | .subsys = "modem", |
| 313 | .link.link_info.edge = "mpss", |
| 314 | .link.link_info.transport = "smem", |
| 315 | }, |
| 316 | { |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 317 | .name = "sdsprpc-smd", |
| 318 | .subsys = "slpi", |
| 319 | .link.link_info.edge = "dsps", |
| 320 | .link.link_info.transport = "smem", |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 321 | }, |
| 322 | { |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 323 | .name = "cdsprpc-smd", |
| 324 | .subsys = "cdsp", |
| 325 | .link.link_info.edge = "cdsp", |
| 326 | .link.link_info.transport = "smem", |
| 327 | }, |
| 328 | }; |
| 329 | |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 330 | static inline int64_t getnstimediff(struct timespec *start) |
| 331 | { |
| 332 | int64_t ns; |
| 333 | struct timespec ts, b; |
| 334 | |
| 335 | getnstimeofday(&ts); |
| 336 | b = timespec_sub(ts, *start); |
| 337 | ns = timespec_to_ns(&b); |
| 338 | return ns; |
| 339 | } |
| 340 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 341 | static void fastrpc_buf_free(struct fastrpc_buf *buf, int cache) |
| 342 | { |
| 343 | struct fastrpc_file *fl = buf == 0 ? 0 : buf->fl; |
| 344 | int vmid; |
| 345 | |
| 346 | if (!fl) |
| 347 | return; |
| 348 | if (cache) { |
| 349 | spin_lock(&fl->hlock); |
| 350 | hlist_add_head(&buf->hn, &fl->bufs); |
| 351 | spin_unlock(&fl->hlock); |
| 352 | return; |
| 353 | } |
| 354 | if (!IS_ERR_OR_NULL(buf->virt)) { |
| 355 | int destVM[1] = {VMID_HLOS}; |
| 356 | int destVMperm[1] = {PERM_READ | PERM_WRITE | PERM_EXEC}; |
| 357 | |
| 358 | if (fl->sctx->smmu.cb) |
| 359 | buf->phys &= ~((uint64_t)fl->sctx->smmu.cb << 32); |
| 360 | vmid = fl->apps->channel[fl->cid].vmid; |
| 361 | if (vmid) { |
| 362 | int srcVM[2] = {VMID_HLOS, vmid}; |
| 363 | |
| 364 | hyp_assign_phys(buf->phys, buf_page_size(buf->size), |
| 365 | srcVM, 2, destVM, destVMperm, 1); |
| 366 | } |
| 367 | dma_free_coherent(fl->sctx->dev, buf->size, buf->virt, |
| 368 | buf->phys); |
| 369 | } |
| 370 | kfree(buf); |
| 371 | } |
| 372 | |
| 373 | static void fastrpc_buf_list_free(struct fastrpc_file *fl) |
| 374 | { |
| 375 | struct fastrpc_buf *buf, *free; |
| 376 | |
| 377 | do { |
| 378 | struct hlist_node *n; |
| 379 | |
| 380 | free = 0; |
| 381 | spin_lock(&fl->hlock); |
| 382 | hlist_for_each_entry_safe(buf, n, &fl->bufs, hn) { |
| 383 | hlist_del_init(&buf->hn); |
| 384 | free = buf; |
| 385 | break; |
| 386 | } |
| 387 | spin_unlock(&fl->hlock); |
| 388 | if (free) |
| 389 | fastrpc_buf_free(free, 0); |
| 390 | } while (free); |
| 391 | } |
| 392 | |
| 393 | static void fastrpc_mmap_add(struct fastrpc_mmap *map) |
| 394 | { |
| 395 | struct fastrpc_file *fl = map->fl; |
| 396 | |
| 397 | spin_lock(&fl->hlock); |
| 398 | hlist_add_head(&map->hn, &fl->maps); |
| 399 | spin_unlock(&fl->hlock); |
| 400 | } |
| 401 | |
| 402 | static int fastrpc_mmap_find(struct fastrpc_file *fl, int fd, uintptr_t va, |
Sathish Ambley | ae5ee54 | 2017-01-16 22:24:23 -0800 | [diff] [blame] | 403 | ssize_t len, int mflags, int refs, struct fastrpc_mmap **ppmap) |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 404 | { |
| 405 | struct fastrpc_mmap *match = 0, *map; |
| 406 | struct hlist_node *n; |
| 407 | |
| 408 | spin_lock(&fl->hlock); |
| 409 | hlist_for_each_entry_safe(map, n, &fl->maps, hn) { |
| 410 | if (va >= map->va && |
| 411 | va + len <= map->va + map->len && |
| 412 | map->fd == fd) { |
Sathish Ambley | ae5ee54 | 2017-01-16 22:24:23 -0800 | [diff] [blame] | 413 | if (refs) |
| 414 | map->refs++; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 415 | match = map; |
| 416 | break; |
| 417 | } |
| 418 | } |
| 419 | spin_unlock(&fl->hlock); |
| 420 | if (match) { |
| 421 | *ppmap = match; |
| 422 | return 0; |
| 423 | } |
| 424 | return -ENOTTY; |
| 425 | } |
| 426 | |
| 427 | static int fastrpc_mmap_remove(struct fastrpc_file *fl, uintptr_t va, |
| 428 | ssize_t len, struct fastrpc_mmap **ppmap) |
| 429 | { |
| 430 | struct fastrpc_mmap *match = 0, *map; |
| 431 | struct hlist_node *n; |
| 432 | struct fastrpc_apps *me = &gfa; |
| 433 | |
| 434 | spin_lock(&me->hlock); |
| 435 | hlist_for_each_entry_safe(map, n, &me->maps, hn) { |
| 436 | if (map->raddr == va && |
| 437 | map->raddr + map->len == va + len && |
| 438 | map->refs == 1) { |
| 439 | match = map; |
| 440 | hlist_del_init(&map->hn); |
| 441 | break; |
| 442 | } |
| 443 | } |
| 444 | spin_unlock(&me->hlock); |
| 445 | if (match) { |
| 446 | *ppmap = match; |
| 447 | return 0; |
| 448 | } |
| 449 | spin_lock(&fl->hlock); |
| 450 | hlist_for_each_entry_safe(map, n, &fl->maps, hn) { |
| 451 | if (map->raddr == va && |
| 452 | map->raddr + map->len == va + len && |
| 453 | map->refs == 1) { |
| 454 | match = map; |
| 455 | hlist_del_init(&map->hn); |
| 456 | break; |
| 457 | } |
| 458 | } |
| 459 | spin_unlock(&fl->hlock); |
| 460 | if (match) { |
| 461 | *ppmap = match; |
| 462 | return 0; |
| 463 | } |
| 464 | return -ENOTTY; |
| 465 | } |
| 466 | |
| 467 | static void fastrpc_mmap_free(struct fastrpc_mmap *map) |
| 468 | { |
| 469 | struct fastrpc_file *fl; |
| 470 | int vmid; |
| 471 | struct fastrpc_session_ctx *sess; |
| 472 | int destVM[1] = {VMID_HLOS}; |
| 473 | int destVMperm[1] = {PERM_READ | PERM_WRITE | PERM_EXEC}; |
| 474 | |
| 475 | if (!map) |
| 476 | return; |
| 477 | fl = map->fl; |
| 478 | spin_lock(&fl->hlock); |
| 479 | map->refs--; |
| 480 | if (!map->refs) |
| 481 | hlist_del_init(&map->hn); |
| 482 | spin_unlock(&fl->hlock); |
| 483 | if (map->refs > 0) |
| 484 | return; |
| 485 | if (map->secure) |
| 486 | sess = fl->secsctx; |
| 487 | else |
| 488 | sess = fl->sctx; |
| 489 | |
| 490 | if (!IS_ERR_OR_NULL(map->handle)) |
| 491 | ion_free(fl->apps->client, map->handle); |
Tharun Kumar Merugu | 8a4547d | 2017-08-04 17:36:42 +0530 | [diff] [blame] | 492 | if (sess && sess->smmu.enabled) { |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 493 | if (map->size || map->phys) |
Sathish Ambley | 58dc64d | 2016-11-29 17:11:53 -0800 | [diff] [blame] | 494 | msm_dma_unmap_sg(sess->dev, |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 495 | map->table->sgl, |
| 496 | map->table->nents, DMA_BIDIRECTIONAL, |
| 497 | map->buf); |
| 498 | } |
| 499 | vmid = fl->apps->channel[fl->cid].vmid; |
| 500 | if (vmid && map->phys) { |
| 501 | int srcVM[2] = {VMID_HLOS, vmid}; |
| 502 | |
| 503 | hyp_assign_phys(map->phys, buf_page_size(map->size), |
| 504 | srcVM, 2, destVM, destVMperm, 1); |
| 505 | } |
| 506 | |
| 507 | if (!IS_ERR_OR_NULL(map->table)) |
| 508 | dma_buf_unmap_attachment(map->attach, map->table, |
| 509 | DMA_BIDIRECTIONAL); |
| 510 | if (!IS_ERR_OR_NULL(map->attach)) |
| 511 | dma_buf_detach(map->buf, map->attach); |
| 512 | if (!IS_ERR_OR_NULL(map->buf)) |
| 513 | dma_buf_put(map->buf); |
| 514 | kfree(map); |
| 515 | } |
| 516 | |
| 517 | static int fastrpc_session_alloc(struct fastrpc_channel_ctx *chan, int secure, |
| 518 | struct fastrpc_session_ctx **session); |
| 519 | |
| 520 | static int fastrpc_mmap_create(struct fastrpc_file *fl, int fd, |
| 521 | unsigned int attr, uintptr_t va, ssize_t len, int mflags, |
| 522 | struct fastrpc_mmap **ppmap) |
| 523 | { |
| 524 | struct fastrpc_session_ctx *sess; |
| 525 | struct fastrpc_apps *apps = fl->apps; |
| 526 | int cid = fl->cid; |
| 527 | struct fastrpc_channel_ctx *chan = &apps->channel[cid]; |
| 528 | struct fastrpc_mmap *map = 0; |
| 529 | unsigned long attrs; |
| 530 | unsigned long flags; |
| 531 | int err = 0, vmid; |
| 532 | |
Sathish Ambley | ae5ee54 | 2017-01-16 22:24:23 -0800 | [diff] [blame] | 533 | if (!fastrpc_mmap_find(fl, fd, va, len, mflags, 1, ppmap)) |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 534 | return 0; |
| 535 | map = kzalloc(sizeof(*map), GFP_KERNEL); |
| 536 | VERIFY(err, !IS_ERR_OR_NULL(map)); |
| 537 | if (err) |
| 538 | goto bail; |
| 539 | INIT_HLIST_NODE(&map->hn); |
| 540 | map->flags = mflags; |
| 541 | map->refs = 1; |
| 542 | map->fl = fl; |
| 543 | map->fd = fd; |
| 544 | map->attr = attr; |
| 545 | VERIFY(err, !IS_ERR_OR_NULL(map->handle = |
| 546 | ion_import_dma_buf_fd(fl->apps->client, fd))); |
| 547 | if (err) |
| 548 | goto bail; |
| 549 | VERIFY(err, !ion_handle_get_flags(fl->apps->client, map->handle, |
| 550 | &flags)); |
| 551 | if (err) |
| 552 | goto bail; |
| 553 | |
| 554 | map->uncached = !ION_IS_CACHED(flags); |
| 555 | if (map->attr & FASTRPC_ATTR_NOVA) |
| 556 | map->uncached = 1; |
| 557 | |
| 558 | map->secure = flags & ION_FLAG_SECURE; |
| 559 | if (map->secure) { |
| 560 | if (!fl->secsctx) |
| 561 | err = fastrpc_session_alloc(chan, 1, |
| 562 | &fl->secsctx); |
| 563 | if (err) |
| 564 | goto bail; |
| 565 | } |
| 566 | if (map->secure) |
| 567 | sess = fl->secsctx; |
| 568 | else |
| 569 | sess = fl->sctx; |
Tharun Kumar Merugu | 8a4547d | 2017-08-04 17:36:42 +0530 | [diff] [blame] | 570 | VERIFY(err, !IS_ERR_OR_NULL(sess)); |
| 571 | if (err) |
| 572 | goto bail; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 573 | VERIFY(err, !IS_ERR_OR_NULL(map->buf = dma_buf_get(fd))); |
| 574 | if (err) |
| 575 | goto bail; |
| 576 | VERIFY(err, !IS_ERR_OR_NULL(map->attach = |
| 577 | dma_buf_attach(map->buf, sess->dev))); |
| 578 | if (err) |
| 579 | goto bail; |
| 580 | VERIFY(err, !IS_ERR_OR_NULL(map->table = |
| 581 | dma_buf_map_attachment(map->attach, |
| 582 | DMA_BIDIRECTIONAL))); |
| 583 | if (err) |
| 584 | goto bail; |
| 585 | if (sess->smmu.enabled) { |
| 586 | attrs = DMA_ATTR_EXEC_MAPPING; |
Tharun Kumar Merugu | 2e5f12e | 2017-07-06 12:04:40 +0530 | [diff] [blame] | 587 | |
| 588 | if (map->attr & FASTRPC_ATTR_NON_COHERENT || |
| 589 | (sess->smmu.coherent && map->uncached)) |
| 590 | attrs |= DMA_ATTR_FORCE_NON_COHERENT; |
| 591 | else if (map->attr & FASTRPC_ATTR_COHERENT) |
| 592 | attrs |= DMA_ATTR_FORCE_COHERENT; |
| 593 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 594 | VERIFY(err, map->table->nents == |
| 595 | msm_dma_map_sg_attrs(sess->dev, |
| 596 | map->table->sgl, map->table->nents, |
| 597 | DMA_BIDIRECTIONAL, map->buf, attrs)); |
| 598 | if (err) |
| 599 | goto bail; |
| 600 | } else { |
| 601 | VERIFY(err, map->table->nents == 1); |
| 602 | if (err) |
| 603 | goto bail; |
| 604 | } |
| 605 | map->phys = sg_dma_address(map->table->sgl); |
| 606 | if (sess->smmu.cb) { |
| 607 | map->phys += ((uint64_t)sess->smmu.cb << 32); |
| 608 | map->size = sg_dma_len(map->table->sgl); |
| 609 | } else { |
| 610 | map->size = buf_page_size(len); |
| 611 | } |
| 612 | vmid = fl->apps->channel[fl->cid].vmid; |
| 613 | if (vmid) { |
| 614 | int srcVM[1] = {VMID_HLOS}; |
| 615 | int destVM[2] = {VMID_HLOS, vmid}; |
| 616 | int destVMperm[2] = {PERM_READ | PERM_WRITE, |
| 617 | PERM_READ | PERM_WRITE | PERM_EXEC}; |
| 618 | |
| 619 | VERIFY(err, !hyp_assign_phys(map->phys, |
| 620 | buf_page_size(map->size), |
| 621 | srcVM, 1, destVM, destVMperm, 2)); |
| 622 | if (err) |
| 623 | goto bail; |
| 624 | } |
| 625 | map->va = va; |
| 626 | map->len = len; |
| 627 | |
| 628 | fastrpc_mmap_add(map); |
| 629 | *ppmap = map; |
| 630 | |
| 631 | bail: |
| 632 | if (err && map) |
| 633 | fastrpc_mmap_free(map); |
| 634 | return err; |
| 635 | } |
| 636 | |
| 637 | static int fastrpc_buf_alloc(struct fastrpc_file *fl, ssize_t size, |
| 638 | struct fastrpc_buf **obuf) |
| 639 | { |
| 640 | int err = 0, vmid; |
| 641 | struct fastrpc_buf *buf = 0, *fr = 0; |
| 642 | struct hlist_node *n; |
| 643 | |
| 644 | VERIFY(err, size > 0); |
| 645 | if (err) |
| 646 | goto bail; |
| 647 | |
| 648 | /* find the smallest buffer that fits in the cache */ |
| 649 | spin_lock(&fl->hlock); |
| 650 | hlist_for_each_entry_safe(buf, n, &fl->bufs, hn) { |
| 651 | if (buf->size >= size && (!fr || fr->size > buf->size)) |
| 652 | fr = buf; |
| 653 | } |
| 654 | if (fr) |
| 655 | hlist_del_init(&fr->hn); |
| 656 | spin_unlock(&fl->hlock); |
| 657 | if (fr) { |
| 658 | *obuf = fr; |
| 659 | return 0; |
| 660 | } |
| 661 | buf = 0; |
| 662 | VERIFY(err, buf = kzalloc(sizeof(*buf), GFP_KERNEL)); |
| 663 | if (err) |
| 664 | goto bail; |
| 665 | INIT_HLIST_NODE(&buf->hn); |
| 666 | buf->fl = fl; |
| 667 | buf->virt = 0; |
| 668 | buf->phys = 0; |
| 669 | buf->size = size; |
| 670 | buf->virt = dma_alloc_coherent(fl->sctx->dev, buf->size, |
| 671 | (void *)&buf->phys, GFP_KERNEL); |
| 672 | if (IS_ERR_OR_NULL(buf->virt)) { |
| 673 | /* free cache and retry */ |
| 674 | fastrpc_buf_list_free(fl); |
| 675 | buf->virt = dma_alloc_coherent(fl->sctx->dev, buf->size, |
| 676 | (void *)&buf->phys, GFP_KERNEL); |
| 677 | VERIFY(err, !IS_ERR_OR_NULL(buf->virt)); |
| 678 | } |
| 679 | if (err) |
| 680 | goto bail; |
| 681 | if (fl->sctx->smmu.cb) |
| 682 | buf->phys += ((uint64_t)fl->sctx->smmu.cb << 32); |
| 683 | vmid = fl->apps->channel[fl->cid].vmid; |
| 684 | if (vmid) { |
| 685 | int srcVM[1] = {VMID_HLOS}; |
| 686 | int destVM[2] = {VMID_HLOS, vmid}; |
| 687 | int destVMperm[2] = {PERM_READ | PERM_WRITE, |
| 688 | PERM_READ | PERM_WRITE | PERM_EXEC}; |
| 689 | |
| 690 | VERIFY(err, !hyp_assign_phys(buf->phys, buf_page_size(size), |
| 691 | srcVM, 1, destVM, destVMperm, 2)); |
| 692 | if (err) |
| 693 | goto bail; |
| 694 | } |
| 695 | |
| 696 | *obuf = buf; |
| 697 | bail: |
| 698 | if (err && buf) |
| 699 | fastrpc_buf_free(buf, 0); |
| 700 | return err; |
| 701 | } |
| 702 | |
| 703 | |
| 704 | static int context_restore_interrupted(struct fastrpc_file *fl, |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 705 | struct fastrpc_ioctl_invoke_crc *inv, |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 706 | struct smq_invoke_ctx **po) |
| 707 | { |
| 708 | int err = 0; |
| 709 | struct smq_invoke_ctx *ctx = 0, *ictx = 0; |
| 710 | struct hlist_node *n; |
| 711 | struct fastrpc_ioctl_invoke *invoke = &inv->inv; |
| 712 | |
| 713 | spin_lock(&fl->hlock); |
| 714 | hlist_for_each_entry_safe(ictx, n, &fl->clst.interrupted, hn) { |
| 715 | if (ictx->pid == current->pid) { |
| 716 | if (invoke->sc != ictx->sc || ictx->fl != fl) |
| 717 | err = -1; |
| 718 | else { |
| 719 | ctx = ictx; |
| 720 | hlist_del_init(&ctx->hn); |
| 721 | hlist_add_head(&ctx->hn, &fl->clst.pending); |
| 722 | } |
| 723 | break; |
| 724 | } |
| 725 | } |
| 726 | spin_unlock(&fl->hlock); |
| 727 | if (ctx) |
| 728 | *po = ctx; |
| 729 | return err; |
| 730 | } |
| 731 | |
| 732 | #define CMP(aa, bb) ((aa) == (bb) ? 0 : (aa) < (bb) ? -1 : 1) |
| 733 | static int overlap_ptr_cmp(const void *a, const void *b) |
| 734 | { |
| 735 | struct overlap *pa = *((struct overlap **)a); |
| 736 | struct overlap *pb = *((struct overlap **)b); |
| 737 | /* sort with lowest starting buffer first */ |
| 738 | int st = CMP(pa->start, pb->start); |
| 739 | /* sort with highest ending buffer first */ |
| 740 | int ed = CMP(pb->end, pa->end); |
| 741 | return st == 0 ? ed : st; |
| 742 | } |
| 743 | |
Sathish Ambley | 9466d67 | 2017-01-25 10:51:55 -0800 | [diff] [blame] | 744 | static int context_build_overlap(struct smq_invoke_ctx *ctx) |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 745 | { |
Sathish Ambley | 9466d67 | 2017-01-25 10:51:55 -0800 | [diff] [blame] | 746 | int i, err = 0; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 747 | remote_arg_t *lpra = ctx->lpra; |
| 748 | int inbufs = REMOTE_SCALARS_INBUFS(ctx->sc); |
| 749 | int outbufs = REMOTE_SCALARS_OUTBUFS(ctx->sc); |
| 750 | int nbufs = inbufs + outbufs; |
| 751 | struct overlap max; |
| 752 | |
| 753 | for (i = 0; i < nbufs; ++i) { |
| 754 | ctx->overs[i].start = (uintptr_t)lpra[i].buf.pv; |
| 755 | ctx->overs[i].end = ctx->overs[i].start + lpra[i].buf.len; |
Sathish Ambley | 9466d67 | 2017-01-25 10:51:55 -0800 | [diff] [blame] | 756 | if (lpra[i].buf.len) { |
| 757 | VERIFY(err, ctx->overs[i].end > ctx->overs[i].start); |
| 758 | if (err) |
| 759 | goto bail; |
| 760 | } |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 761 | ctx->overs[i].raix = i; |
| 762 | ctx->overps[i] = &ctx->overs[i]; |
| 763 | } |
| 764 | sort(ctx->overps, nbufs, sizeof(*ctx->overps), overlap_ptr_cmp, 0); |
| 765 | max.start = 0; |
| 766 | max.end = 0; |
| 767 | for (i = 0; i < nbufs; ++i) { |
| 768 | if (ctx->overps[i]->start < max.end) { |
| 769 | ctx->overps[i]->mstart = max.end; |
| 770 | ctx->overps[i]->mend = ctx->overps[i]->end; |
| 771 | ctx->overps[i]->offset = max.end - |
| 772 | ctx->overps[i]->start; |
| 773 | if (ctx->overps[i]->end > max.end) { |
| 774 | max.end = ctx->overps[i]->end; |
| 775 | } else { |
| 776 | ctx->overps[i]->mend = 0; |
| 777 | ctx->overps[i]->mstart = 0; |
| 778 | } |
| 779 | } else { |
| 780 | ctx->overps[i]->mend = ctx->overps[i]->end; |
| 781 | ctx->overps[i]->mstart = ctx->overps[i]->start; |
| 782 | ctx->overps[i]->offset = 0; |
| 783 | max = *ctx->overps[i]; |
| 784 | } |
| 785 | } |
Sathish Ambley | 9466d67 | 2017-01-25 10:51:55 -0800 | [diff] [blame] | 786 | bail: |
| 787 | return err; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 788 | } |
| 789 | |
| 790 | #define K_COPY_FROM_USER(err, kernel, dst, src, size) \ |
| 791 | do {\ |
| 792 | if (!(kernel))\ |
| 793 | VERIFY(err, 0 == copy_from_user((dst), (src),\ |
| 794 | (size)));\ |
| 795 | else\ |
| 796 | memmove((dst), (src), (size));\ |
| 797 | } while (0) |
| 798 | |
| 799 | #define K_COPY_TO_USER(err, kernel, dst, src, size) \ |
| 800 | do {\ |
| 801 | if (!(kernel))\ |
| 802 | VERIFY(err, 0 == copy_to_user((dst), (src),\ |
| 803 | (size)));\ |
| 804 | else\ |
| 805 | memmove((dst), (src), (size));\ |
| 806 | } while (0) |
| 807 | |
| 808 | |
| 809 | static void context_free(struct smq_invoke_ctx *ctx); |
| 810 | |
| 811 | static int context_alloc(struct fastrpc_file *fl, uint32_t kernel, |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 812 | struct fastrpc_ioctl_invoke_crc *invokefd, |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 813 | struct smq_invoke_ctx **po) |
| 814 | { |
| 815 | int err = 0, bufs, size = 0; |
| 816 | struct smq_invoke_ctx *ctx = 0; |
| 817 | struct fastrpc_ctx_lst *clst = &fl->clst; |
| 818 | struct fastrpc_ioctl_invoke *invoke = &invokefd->inv; |
| 819 | |
| 820 | bufs = REMOTE_SCALARS_LENGTH(invoke->sc); |
| 821 | size = bufs * sizeof(*ctx->lpra) + bufs * sizeof(*ctx->maps) + |
| 822 | sizeof(*ctx->fds) * (bufs) + |
| 823 | sizeof(*ctx->attrs) * (bufs) + |
| 824 | sizeof(*ctx->overs) * (bufs) + |
| 825 | sizeof(*ctx->overps) * (bufs); |
| 826 | |
| 827 | VERIFY(err, ctx = kzalloc(sizeof(*ctx) + size, GFP_KERNEL)); |
| 828 | if (err) |
| 829 | goto bail; |
| 830 | |
| 831 | INIT_HLIST_NODE(&ctx->hn); |
| 832 | hlist_add_fake(&ctx->hn); |
| 833 | ctx->fl = fl; |
| 834 | ctx->maps = (struct fastrpc_mmap **)(&ctx[1]); |
| 835 | ctx->lpra = (remote_arg_t *)(&ctx->maps[bufs]); |
| 836 | ctx->fds = (int *)(&ctx->lpra[bufs]); |
| 837 | ctx->attrs = (unsigned int *)(&ctx->fds[bufs]); |
| 838 | ctx->overs = (struct overlap *)(&ctx->attrs[bufs]); |
| 839 | ctx->overps = (struct overlap **)(&ctx->overs[bufs]); |
| 840 | |
| 841 | K_COPY_FROM_USER(err, kernel, ctx->lpra, invoke->pra, |
| 842 | bufs * sizeof(*ctx->lpra)); |
| 843 | if (err) |
| 844 | goto bail; |
| 845 | |
| 846 | if (invokefd->fds) { |
| 847 | K_COPY_FROM_USER(err, kernel, ctx->fds, invokefd->fds, |
| 848 | bufs * sizeof(*ctx->fds)); |
| 849 | if (err) |
| 850 | goto bail; |
| 851 | } |
| 852 | if (invokefd->attrs) { |
| 853 | K_COPY_FROM_USER(err, kernel, ctx->attrs, invokefd->attrs, |
| 854 | bufs * sizeof(*ctx->attrs)); |
| 855 | if (err) |
| 856 | goto bail; |
| 857 | } |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 858 | ctx->crc = (uint32_t *)invokefd->crc; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 859 | ctx->sc = invoke->sc; |
Sathish Ambley | 9466d67 | 2017-01-25 10:51:55 -0800 | [diff] [blame] | 860 | if (bufs) { |
| 861 | VERIFY(err, 0 == context_build_overlap(ctx)); |
| 862 | if (err) |
| 863 | goto bail; |
| 864 | } |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 865 | ctx->retval = -1; |
| 866 | ctx->pid = current->pid; |
Tharun Kumar Merugu | d4d07948 | 2017-09-06 11:22:19 +0530 | [diff] [blame] | 867 | ctx->tgid = fl->tgid; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 868 | init_completion(&ctx->work); |
c_mtharu | fdac689 | 2017-10-12 13:09:01 +0530 | [diff] [blame^] | 869 | ctx->magic = FASTRPC_CTX_MAGIC; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 870 | |
| 871 | spin_lock(&fl->hlock); |
| 872 | hlist_add_head(&ctx->hn, &clst->pending); |
| 873 | spin_unlock(&fl->hlock); |
| 874 | |
| 875 | *po = ctx; |
| 876 | bail: |
| 877 | if (ctx && err) |
| 878 | context_free(ctx); |
| 879 | return err; |
| 880 | } |
| 881 | |
| 882 | static void context_save_interrupted(struct smq_invoke_ctx *ctx) |
| 883 | { |
| 884 | struct fastrpc_ctx_lst *clst = &ctx->fl->clst; |
| 885 | |
| 886 | spin_lock(&ctx->fl->hlock); |
| 887 | hlist_del_init(&ctx->hn); |
| 888 | hlist_add_head(&ctx->hn, &clst->interrupted); |
| 889 | spin_unlock(&ctx->fl->hlock); |
| 890 | /* free the cache on power collapse */ |
| 891 | fastrpc_buf_list_free(ctx->fl); |
| 892 | } |
| 893 | |
| 894 | static void context_free(struct smq_invoke_ctx *ctx) |
| 895 | { |
| 896 | int i; |
| 897 | int nbufs = REMOTE_SCALARS_INBUFS(ctx->sc) + |
| 898 | REMOTE_SCALARS_OUTBUFS(ctx->sc); |
| 899 | spin_lock(&ctx->fl->hlock); |
| 900 | hlist_del_init(&ctx->hn); |
| 901 | spin_unlock(&ctx->fl->hlock); |
| 902 | for (i = 0; i < nbufs; ++i) |
| 903 | fastrpc_mmap_free(ctx->maps[i]); |
| 904 | fastrpc_buf_free(ctx->buf, 1); |
c_mtharu | fdac689 | 2017-10-12 13:09:01 +0530 | [diff] [blame^] | 905 | ctx->magic = 0; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 906 | kfree(ctx); |
| 907 | } |
| 908 | |
| 909 | static void context_notify_user(struct smq_invoke_ctx *ctx, int retval) |
| 910 | { |
| 911 | ctx->retval = retval; |
| 912 | complete(&ctx->work); |
| 913 | } |
| 914 | |
| 915 | |
| 916 | static void fastrpc_notify_users(struct fastrpc_file *me) |
| 917 | { |
| 918 | struct smq_invoke_ctx *ictx; |
| 919 | struct hlist_node *n; |
| 920 | |
| 921 | spin_lock(&me->hlock); |
| 922 | hlist_for_each_entry_safe(ictx, n, &me->clst.pending, hn) { |
| 923 | complete(&ictx->work); |
| 924 | } |
| 925 | hlist_for_each_entry_safe(ictx, n, &me->clst.interrupted, hn) { |
| 926 | complete(&ictx->work); |
| 927 | } |
| 928 | spin_unlock(&me->hlock); |
| 929 | |
| 930 | } |
| 931 | |
| 932 | static void fastrpc_notify_drivers(struct fastrpc_apps *me, int cid) |
| 933 | { |
| 934 | struct fastrpc_file *fl; |
| 935 | struct hlist_node *n; |
| 936 | |
| 937 | spin_lock(&me->hlock); |
| 938 | hlist_for_each_entry_safe(fl, n, &me->drivers, hn) { |
| 939 | if (fl->cid == cid) |
| 940 | fastrpc_notify_users(fl); |
| 941 | } |
| 942 | spin_unlock(&me->hlock); |
| 943 | |
| 944 | } |
| 945 | static void context_list_ctor(struct fastrpc_ctx_lst *me) |
| 946 | { |
| 947 | INIT_HLIST_HEAD(&me->interrupted); |
| 948 | INIT_HLIST_HEAD(&me->pending); |
| 949 | } |
| 950 | |
| 951 | static void fastrpc_context_list_dtor(struct fastrpc_file *fl) |
| 952 | { |
| 953 | struct fastrpc_ctx_lst *clst = &fl->clst; |
| 954 | struct smq_invoke_ctx *ictx = 0, *ctxfree; |
| 955 | struct hlist_node *n; |
| 956 | |
| 957 | do { |
| 958 | ctxfree = 0; |
| 959 | spin_lock(&fl->hlock); |
| 960 | hlist_for_each_entry_safe(ictx, n, &clst->interrupted, hn) { |
| 961 | hlist_del_init(&ictx->hn); |
| 962 | ctxfree = ictx; |
| 963 | break; |
| 964 | } |
| 965 | spin_unlock(&fl->hlock); |
| 966 | if (ctxfree) |
| 967 | context_free(ctxfree); |
| 968 | } while (ctxfree); |
| 969 | do { |
| 970 | ctxfree = 0; |
| 971 | spin_lock(&fl->hlock); |
| 972 | hlist_for_each_entry_safe(ictx, n, &clst->pending, hn) { |
| 973 | hlist_del_init(&ictx->hn); |
| 974 | ctxfree = ictx; |
| 975 | break; |
| 976 | } |
| 977 | spin_unlock(&fl->hlock); |
| 978 | if (ctxfree) |
| 979 | context_free(ctxfree); |
| 980 | } while (ctxfree); |
| 981 | } |
| 982 | |
| 983 | static int fastrpc_file_free(struct fastrpc_file *fl); |
| 984 | static void fastrpc_file_list_dtor(struct fastrpc_apps *me) |
| 985 | { |
| 986 | struct fastrpc_file *fl, *free; |
| 987 | struct hlist_node *n; |
| 988 | |
| 989 | do { |
| 990 | free = 0; |
| 991 | spin_lock(&me->hlock); |
| 992 | hlist_for_each_entry_safe(fl, n, &me->drivers, hn) { |
| 993 | hlist_del_init(&fl->hn); |
| 994 | free = fl; |
| 995 | break; |
| 996 | } |
| 997 | spin_unlock(&me->hlock); |
| 998 | if (free) |
| 999 | fastrpc_file_free(free); |
| 1000 | } while (free); |
| 1001 | } |
| 1002 | |
| 1003 | static int get_args(uint32_t kernel, struct smq_invoke_ctx *ctx) |
| 1004 | { |
| 1005 | remote_arg64_t *rpra; |
| 1006 | remote_arg_t *lpra = ctx->lpra; |
| 1007 | struct smq_invoke_buf *list; |
| 1008 | struct smq_phy_page *pages, *ipage; |
| 1009 | uint32_t sc = ctx->sc; |
| 1010 | int inbufs = REMOTE_SCALARS_INBUFS(sc); |
| 1011 | int outbufs = REMOTE_SCALARS_OUTBUFS(sc); |
Sathish Ambley | 58dc64d | 2016-11-29 17:11:53 -0800 | [diff] [blame] | 1012 | int handles, bufs = inbufs + outbufs; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1013 | uintptr_t args; |
| 1014 | ssize_t rlen = 0, copylen = 0, metalen = 0; |
Sathish Ambley | 58dc64d | 2016-11-29 17:11:53 -0800 | [diff] [blame] | 1015 | int i, oix; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1016 | int err = 0; |
| 1017 | int mflags = 0; |
Sathish Ambley | 58dc64d | 2016-11-29 17:11:53 -0800 | [diff] [blame] | 1018 | uint64_t *fdlist; |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1019 | uint32_t *crclist; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1020 | |
| 1021 | /* calculate size of the metadata */ |
| 1022 | rpra = 0; |
| 1023 | list = smq_invoke_buf_start(rpra, sc); |
| 1024 | pages = smq_phy_page_start(sc, list); |
| 1025 | ipage = pages; |
| 1026 | |
| 1027 | for (i = 0; i < bufs; ++i) { |
| 1028 | uintptr_t buf = (uintptr_t)lpra[i].buf.pv; |
| 1029 | ssize_t len = lpra[i].buf.len; |
| 1030 | |
| 1031 | if (ctx->fds[i] && (ctx->fds[i] != -1)) |
| 1032 | fastrpc_mmap_create(ctx->fl, ctx->fds[i], |
| 1033 | ctx->attrs[i], buf, len, |
| 1034 | mflags, &ctx->maps[i]); |
| 1035 | ipage += 1; |
| 1036 | } |
Sathish Ambley | 58dc64d | 2016-11-29 17:11:53 -0800 | [diff] [blame] | 1037 | handles = REMOTE_SCALARS_INHANDLES(sc) + REMOTE_SCALARS_OUTHANDLES(sc); |
| 1038 | for (i = bufs; i < bufs + handles; i++) { |
| 1039 | VERIFY(err, !fastrpc_mmap_create(ctx->fl, ctx->fds[i], |
| 1040 | FASTRPC_ATTR_NOVA, 0, 0, 0, &ctx->maps[i])); |
| 1041 | if (err) |
| 1042 | goto bail; |
| 1043 | ipage += 1; |
| 1044 | } |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1045 | metalen = copylen = (ssize_t)&ipage[0] + (sizeof(uint64_t) * M_FDLIST) + |
| 1046 | (sizeof(uint32_t) * M_CRCLIST); |
| 1047 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1048 | /* calculate len requreed for copying */ |
| 1049 | for (oix = 0; oix < inbufs + outbufs; ++oix) { |
| 1050 | int i = ctx->overps[oix]->raix; |
Sathish Ambley | d209c1e | 2016-12-13 15:27:30 -0800 | [diff] [blame] | 1051 | uintptr_t mstart, mend; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1052 | ssize_t len = lpra[i].buf.len; |
| 1053 | |
| 1054 | if (!len) |
| 1055 | continue; |
| 1056 | if (ctx->maps[i]) |
| 1057 | continue; |
| 1058 | if (ctx->overps[oix]->offset == 0) |
| 1059 | copylen = ALIGN(copylen, BALIGN); |
Sathish Ambley | d209c1e | 2016-12-13 15:27:30 -0800 | [diff] [blame] | 1060 | mstart = ctx->overps[oix]->mstart; |
| 1061 | mend = ctx->overps[oix]->mend; |
| 1062 | VERIFY(err, (mend - mstart) <= LONG_MAX); |
| 1063 | if (err) |
| 1064 | goto bail; |
| 1065 | copylen += mend - mstart; |
| 1066 | VERIFY(err, copylen >= 0); |
| 1067 | if (err) |
| 1068 | goto bail; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1069 | } |
| 1070 | ctx->used = copylen; |
| 1071 | |
| 1072 | /* allocate new buffer */ |
| 1073 | if (copylen) { |
| 1074 | VERIFY(err, !fastrpc_buf_alloc(ctx->fl, copylen, &ctx->buf)); |
| 1075 | if (err) |
| 1076 | goto bail; |
| 1077 | } |
Tharun Kumar Merugu | e3361f9 | 2017-06-22 10:45:43 +0530 | [diff] [blame] | 1078 | if (ctx->buf->virt && metalen <= copylen) |
| 1079 | memset(ctx->buf->virt, 0, metalen); |
| 1080 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1081 | /* copy metadata */ |
| 1082 | rpra = ctx->buf->virt; |
| 1083 | ctx->rpra = rpra; |
| 1084 | list = smq_invoke_buf_start(rpra, sc); |
| 1085 | pages = smq_phy_page_start(sc, list); |
| 1086 | ipage = pages; |
| 1087 | args = (uintptr_t)ctx->buf->virt + metalen; |
Sathish Ambley | 58dc64d | 2016-11-29 17:11:53 -0800 | [diff] [blame] | 1088 | for (i = 0; i < bufs + handles; ++i) { |
| 1089 | if (lpra[i].buf.len) |
| 1090 | list[i].num = 1; |
| 1091 | else |
| 1092 | list[i].num = 0; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1093 | list[i].pgidx = ipage - pages; |
| 1094 | ipage++; |
| 1095 | } |
| 1096 | /* map ion buffers */ |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1097 | PERF(ctx->fl->profile, ctx->fl->perf.map, |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1098 | for (i = 0; i < inbufs + outbufs; ++i) { |
| 1099 | struct fastrpc_mmap *map = ctx->maps[i]; |
| 1100 | uint64_t buf = ptr_to_uint64(lpra[i].buf.pv); |
| 1101 | ssize_t len = lpra[i].buf.len; |
| 1102 | |
| 1103 | rpra[i].buf.pv = 0; |
| 1104 | rpra[i].buf.len = len; |
| 1105 | if (!len) |
| 1106 | continue; |
| 1107 | if (map) { |
| 1108 | struct vm_area_struct *vma; |
| 1109 | uintptr_t offset; |
| 1110 | int num = buf_num_pages(buf, len); |
| 1111 | int idx = list[i].pgidx; |
| 1112 | |
| 1113 | if (map->attr & FASTRPC_ATTR_NOVA) { |
Sathish Ambley | 58dc64d | 2016-11-29 17:11:53 -0800 | [diff] [blame] | 1114 | offset = 0; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1115 | } else { |
| 1116 | down_read(¤t->mm->mmap_sem); |
| 1117 | VERIFY(err, NULL != (vma = find_vma(current->mm, |
| 1118 | map->va))); |
| 1119 | if (err) { |
| 1120 | up_read(¤t->mm->mmap_sem); |
| 1121 | goto bail; |
| 1122 | } |
| 1123 | offset = buf_page_start(buf) - vma->vm_start; |
| 1124 | up_read(¤t->mm->mmap_sem); |
| 1125 | VERIFY(err, offset < (uintptr_t)map->size); |
| 1126 | if (err) |
| 1127 | goto bail; |
| 1128 | } |
| 1129 | pages[idx].addr = map->phys + offset; |
| 1130 | pages[idx].size = num << PAGE_SHIFT; |
| 1131 | } |
| 1132 | rpra[i].buf.pv = buf; |
| 1133 | } |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1134 | PERF_END); |
Sathish Ambley | 58dc64d | 2016-11-29 17:11:53 -0800 | [diff] [blame] | 1135 | for (i = bufs; i < bufs + handles; ++i) { |
| 1136 | struct fastrpc_mmap *map = ctx->maps[i]; |
| 1137 | |
| 1138 | pages[i].addr = map->phys; |
| 1139 | pages[i].size = map->size; |
| 1140 | } |
| 1141 | fdlist = (uint64_t *)&pages[bufs + handles]; |
| 1142 | for (i = 0; i < M_FDLIST; i++) |
| 1143 | fdlist[i] = 0; |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1144 | crclist = (uint32_t *)&fdlist[M_FDLIST]; |
Tharun Kumar Merugu | 2e5f12e | 2017-07-06 12:04:40 +0530 | [diff] [blame] | 1145 | memset(crclist, 0, sizeof(uint32_t)*M_CRCLIST); |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1146 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1147 | /* copy non ion buffers */ |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1148 | PERF(ctx->fl->profile, ctx->fl->perf.copy, |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1149 | rlen = copylen - metalen; |
| 1150 | for (oix = 0; oix < inbufs + outbufs; ++oix) { |
| 1151 | int i = ctx->overps[oix]->raix; |
| 1152 | struct fastrpc_mmap *map = ctx->maps[i]; |
Sathish Ambley | d209c1e | 2016-12-13 15:27:30 -0800 | [diff] [blame] | 1153 | ssize_t mlen; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1154 | uint64_t buf; |
| 1155 | ssize_t len = lpra[i].buf.len; |
| 1156 | |
| 1157 | if (!len) |
| 1158 | continue; |
| 1159 | if (map) |
| 1160 | continue; |
| 1161 | if (ctx->overps[oix]->offset == 0) { |
| 1162 | rlen -= ALIGN(args, BALIGN) - args; |
| 1163 | args = ALIGN(args, BALIGN); |
| 1164 | } |
Sathish Ambley | d209c1e | 2016-12-13 15:27:30 -0800 | [diff] [blame] | 1165 | mlen = ctx->overps[oix]->mend - ctx->overps[oix]->mstart; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1166 | VERIFY(err, rlen >= mlen); |
| 1167 | if (err) |
| 1168 | goto bail; |
| 1169 | rpra[i].buf.pv = (args - ctx->overps[oix]->offset); |
| 1170 | pages[list[i].pgidx].addr = ctx->buf->phys - |
| 1171 | ctx->overps[oix]->offset + |
| 1172 | (copylen - rlen); |
| 1173 | pages[list[i].pgidx].addr = |
| 1174 | buf_page_start(pages[list[i].pgidx].addr); |
| 1175 | buf = rpra[i].buf.pv; |
| 1176 | pages[list[i].pgidx].size = buf_num_pages(buf, len) * PAGE_SIZE; |
| 1177 | if (i < inbufs) { |
| 1178 | K_COPY_FROM_USER(err, kernel, uint64_to_ptr(buf), |
| 1179 | lpra[i].buf.pv, len); |
| 1180 | if (err) |
| 1181 | goto bail; |
| 1182 | } |
| 1183 | args = args + mlen; |
| 1184 | rlen -= mlen; |
| 1185 | } |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1186 | PERF_END); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1187 | |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1188 | PERF(ctx->fl->profile, ctx->fl->perf.flush, |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1189 | for (oix = 0; oix < inbufs + outbufs; ++oix) { |
| 1190 | int i = ctx->overps[oix]->raix; |
| 1191 | struct fastrpc_mmap *map = ctx->maps[i]; |
| 1192 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1193 | if (map && map->uncached) |
| 1194 | continue; |
Tharun Kumar Merugu | 2e5f12e | 2017-07-06 12:04:40 +0530 | [diff] [blame] | 1195 | if (ctx->fl->sctx->smmu.coherent && |
| 1196 | !(map && (map->attr & FASTRPC_ATTR_NON_COHERENT))) |
| 1197 | continue; |
| 1198 | if (map && (map->attr & FASTRPC_ATTR_COHERENT)) |
| 1199 | continue; |
| 1200 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1201 | if (rpra[i].buf.len && ctx->overps[oix]->mstart) |
| 1202 | dmac_flush_range(uint64_to_ptr(rpra[i].buf.pv), |
| 1203 | uint64_to_ptr(rpra[i].buf.pv + rpra[i].buf.len)); |
| 1204 | } |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1205 | PERF_END); |
Sathish Ambley | 58dc64d | 2016-11-29 17:11:53 -0800 | [diff] [blame] | 1206 | for (i = bufs; i < bufs + handles; i++) { |
| 1207 | rpra[i].dma.fd = ctx->fds[i]; |
| 1208 | rpra[i].dma.len = (uint32_t)lpra[i].buf.len; |
| 1209 | rpra[i].dma.offset = (uint32_t)(uintptr_t)lpra[i].buf.pv; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1210 | } |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1211 | |
| 1212 | if (!ctx->fl->sctx->smmu.coherent) { |
| 1213 | PERF(ctx->fl->profile, ctx->fl->perf.flush, |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1214 | dmac_flush_range((char *)rpra, (char *)rpra + ctx->used); |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1215 | PERF_END); |
| 1216 | } |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1217 | bail: |
| 1218 | return err; |
| 1219 | } |
| 1220 | |
| 1221 | static int put_args(uint32_t kernel, struct smq_invoke_ctx *ctx, |
| 1222 | remote_arg_t *upra) |
| 1223 | { |
| 1224 | uint32_t sc = ctx->sc; |
Sathish Ambley | 58dc64d | 2016-11-29 17:11:53 -0800 | [diff] [blame] | 1225 | struct smq_invoke_buf *list; |
| 1226 | struct smq_phy_page *pages; |
| 1227 | struct fastrpc_mmap *mmap; |
| 1228 | uint64_t *fdlist; |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1229 | uint32_t *crclist = NULL; |
| 1230 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1231 | remote_arg64_t *rpra = ctx->rpra; |
Sathish Ambley | 58dc64d | 2016-11-29 17:11:53 -0800 | [diff] [blame] | 1232 | int i, inbufs, outbufs, handles; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1233 | int err = 0; |
| 1234 | |
| 1235 | inbufs = REMOTE_SCALARS_INBUFS(sc); |
| 1236 | outbufs = REMOTE_SCALARS_OUTBUFS(sc); |
Sathish Ambley | 58dc64d | 2016-11-29 17:11:53 -0800 | [diff] [blame] | 1237 | handles = REMOTE_SCALARS_INHANDLES(sc) + REMOTE_SCALARS_OUTHANDLES(sc); |
| 1238 | list = smq_invoke_buf_start(ctx->rpra, sc); |
| 1239 | pages = smq_phy_page_start(sc, list); |
| 1240 | fdlist = (uint64_t *)(pages + inbufs + outbufs + handles); |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1241 | crclist = (uint32_t *)(fdlist + M_FDLIST); |
| 1242 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1243 | for (i = inbufs; i < inbufs + outbufs; ++i) { |
| 1244 | if (!ctx->maps[i]) { |
| 1245 | K_COPY_TO_USER(err, kernel, |
| 1246 | ctx->lpra[i].buf.pv, |
| 1247 | uint64_to_ptr(rpra[i].buf.pv), |
| 1248 | rpra[i].buf.len); |
| 1249 | if (err) |
| 1250 | goto bail; |
| 1251 | } else { |
| 1252 | fastrpc_mmap_free(ctx->maps[i]); |
| 1253 | ctx->maps[i] = 0; |
| 1254 | } |
| 1255 | } |
Sathish Ambley | 58dc64d | 2016-11-29 17:11:53 -0800 | [diff] [blame] | 1256 | if (inbufs + outbufs + handles) { |
| 1257 | for (i = 0; i < M_FDLIST; i++) { |
| 1258 | if (!fdlist[i]) |
| 1259 | break; |
| 1260 | if (!fastrpc_mmap_find(ctx->fl, (int)fdlist[i], 0, 0, |
Sathish Ambley | ae5ee54 | 2017-01-16 22:24:23 -0800 | [diff] [blame] | 1261 | 0, 0, &mmap)) |
Sathish Ambley | 58dc64d | 2016-11-29 17:11:53 -0800 | [diff] [blame] | 1262 | fastrpc_mmap_free(mmap); |
| 1263 | } |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1264 | } |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1265 | if (ctx->crc && crclist && rpra) |
| 1266 | K_COPY_TO_USER(err, kernel, (void __user *)ctx->crc, |
| 1267 | crclist, M_CRCLIST*sizeof(uint32_t)); |
| 1268 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1269 | bail: |
| 1270 | return err; |
| 1271 | } |
| 1272 | |
| 1273 | static void inv_args_pre(struct smq_invoke_ctx *ctx) |
| 1274 | { |
| 1275 | int i, inbufs, outbufs; |
| 1276 | uint32_t sc = ctx->sc; |
| 1277 | remote_arg64_t *rpra = ctx->rpra; |
| 1278 | uintptr_t end; |
| 1279 | |
| 1280 | inbufs = REMOTE_SCALARS_INBUFS(sc); |
| 1281 | outbufs = REMOTE_SCALARS_OUTBUFS(sc); |
| 1282 | for (i = inbufs; i < inbufs + outbufs; ++i) { |
| 1283 | struct fastrpc_mmap *map = ctx->maps[i]; |
| 1284 | |
| 1285 | if (map && map->uncached) |
| 1286 | continue; |
| 1287 | if (!rpra[i].buf.len) |
| 1288 | continue; |
Tharun Kumar Merugu | 2e5f12e | 2017-07-06 12:04:40 +0530 | [diff] [blame] | 1289 | if (ctx->fl->sctx->smmu.coherent && |
| 1290 | !(map && (map->attr & FASTRPC_ATTR_NON_COHERENT))) |
| 1291 | continue; |
| 1292 | if (map && (map->attr & FASTRPC_ATTR_COHERENT)) |
| 1293 | continue; |
| 1294 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1295 | if (buf_page_start(ptr_to_uint64((void *)rpra)) == |
| 1296 | buf_page_start(rpra[i].buf.pv)) |
| 1297 | continue; |
| 1298 | if (!IS_CACHE_ALIGNED((uintptr_t)uint64_to_ptr(rpra[i].buf.pv))) |
| 1299 | dmac_flush_range(uint64_to_ptr(rpra[i].buf.pv), |
| 1300 | (char *)(uint64_to_ptr(rpra[i].buf.pv + 1))); |
| 1301 | end = (uintptr_t)uint64_to_ptr(rpra[i].buf.pv + |
| 1302 | rpra[i].buf.len); |
| 1303 | if (!IS_CACHE_ALIGNED(end)) |
| 1304 | dmac_flush_range((char *)end, |
| 1305 | (char *)end + 1); |
| 1306 | } |
| 1307 | } |
| 1308 | |
| 1309 | static void inv_args(struct smq_invoke_ctx *ctx) |
| 1310 | { |
| 1311 | int i, inbufs, outbufs; |
| 1312 | uint32_t sc = ctx->sc; |
| 1313 | remote_arg64_t *rpra = ctx->rpra; |
| 1314 | int used = ctx->used; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1315 | |
| 1316 | inbufs = REMOTE_SCALARS_INBUFS(sc); |
| 1317 | outbufs = REMOTE_SCALARS_OUTBUFS(sc); |
| 1318 | for (i = inbufs; i < inbufs + outbufs; ++i) { |
| 1319 | struct fastrpc_mmap *map = ctx->maps[i]; |
| 1320 | |
| 1321 | if (map && map->uncached) |
| 1322 | continue; |
| 1323 | if (!rpra[i].buf.len) |
| 1324 | continue; |
Tharun Kumar Merugu | 2e5f12e | 2017-07-06 12:04:40 +0530 | [diff] [blame] | 1325 | if (ctx->fl->sctx->smmu.coherent && |
| 1326 | !(map && (map->attr & FASTRPC_ATTR_NON_COHERENT))) |
| 1327 | continue; |
| 1328 | if (map && (map->attr & FASTRPC_ATTR_COHERENT)) |
| 1329 | continue; |
| 1330 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1331 | if (buf_page_start(ptr_to_uint64((void *)rpra)) == |
| 1332 | buf_page_start(rpra[i].buf.pv)) { |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1333 | continue; |
| 1334 | } |
| 1335 | if (map && map->handle) |
| 1336 | msm_ion_do_cache_op(ctx->fl->apps->client, map->handle, |
| 1337 | (char *)uint64_to_ptr(rpra[i].buf.pv), |
| 1338 | rpra[i].buf.len, ION_IOC_INV_CACHES); |
| 1339 | else |
| 1340 | dmac_inv_range((char *)uint64_to_ptr(rpra[i].buf.pv), |
| 1341 | (char *)uint64_to_ptr(rpra[i].buf.pv |
| 1342 | + rpra[i].buf.len)); |
| 1343 | } |
| 1344 | |
Sathish Ambley | 58dc64d | 2016-11-29 17:11:53 -0800 | [diff] [blame] | 1345 | if (rpra) |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1346 | dmac_inv_range(rpra, (char *)rpra + used); |
| 1347 | } |
| 1348 | |
| 1349 | static int fastrpc_invoke_send(struct smq_invoke_ctx *ctx, |
| 1350 | uint32_t kernel, uint32_t handle) |
| 1351 | { |
| 1352 | struct smq_msg *msg = &ctx->msg; |
| 1353 | struct fastrpc_file *fl = ctx->fl; |
| 1354 | struct fastrpc_channel_ctx *channel_ctx = &fl->apps->channel[fl->cid]; |
| 1355 | int err = 0; |
| 1356 | |
| 1357 | VERIFY(err, 0 != channel_ctx->chan); |
| 1358 | if (err) |
| 1359 | goto bail; |
Tharun Kumar Merugu | d4d07948 | 2017-09-06 11:22:19 +0530 | [diff] [blame] | 1360 | msg->pid = fl->tgid; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1361 | msg->tid = current->pid; |
Tharun Kumar Merugu | d4d07948 | 2017-09-06 11:22:19 +0530 | [diff] [blame] | 1362 | if (fl->sessionid) |
| 1363 | msg->tid |= (1 << SESSION_ID_INDEX); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1364 | if (kernel) |
| 1365 | msg->pid = 0; |
| 1366 | msg->invoke.header.ctx = ptr_to_uint64(ctx) | fl->pd; |
| 1367 | msg->invoke.header.handle = handle; |
| 1368 | msg->invoke.header.sc = ctx->sc; |
| 1369 | msg->invoke.page.addr = ctx->buf ? ctx->buf->phys : 0; |
| 1370 | msg->invoke.page.size = buf_page_size(ctx->used); |
| 1371 | |
| 1372 | if (fl->ssrcount != channel_ctx->ssrcount) { |
| 1373 | err = -ECONNRESET; |
| 1374 | goto bail; |
| 1375 | } |
| 1376 | VERIFY(err, channel_ctx->link.port_state == |
| 1377 | FASTRPC_LINK_CONNECTED); |
| 1378 | if (err) |
| 1379 | goto bail; |
| 1380 | err = glink_tx(channel_ctx->chan, |
| 1381 | (void *)&fl->apps->channel[fl->cid], msg, sizeof(*msg), |
| 1382 | GLINK_TX_REQ_INTENT); |
| 1383 | bail: |
| 1384 | return err; |
| 1385 | } |
| 1386 | |
| 1387 | static void fastrpc_init(struct fastrpc_apps *me) |
| 1388 | { |
| 1389 | int i; |
| 1390 | |
| 1391 | INIT_HLIST_HEAD(&me->drivers); |
| 1392 | spin_lock_init(&me->hlock); |
| 1393 | mutex_init(&me->smd_mutex); |
| 1394 | me->channel = &gcinfo[0]; |
| 1395 | for (i = 0; i < NUM_CHANNELS; i++) { |
| 1396 | init_completion(&me->channel[i].work); |
Tharun Kumar Merugu | 53a8ec9 | 2017-07-14 15:52:49 +0530 | [diff] [blame] | 1397 | init_completion(&me->channel[i].workport); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1398 | me->channel[i].sesscount = 0; |
| 1399 | } |
| 1400 | } |
| 1401 | |
| 1402 | static int fastrpc_release_current_dsp_process(struct fastrpc_file *fl); |
| 1403 | |
| 1404 | static int fastrpc_internal_invoke(struct fastrpc_file *fl, uint32_t mode, |
| 1405 | uint32_t kernel, |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1406 | struct fastrpc_ioctl_invoke_crc *inv) |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1407 | { |
| 1408 | struct smq_invoke_ctx *ctx = 0; |
| 1409 | struct fastrpc_ioctl_invoke *invoke = &inv->inv; |
| 1410 | int cid = fl->cid; |
| 1411 | int interrupted = 0; |
| 1412 | int err = 0; |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1413 | struct timespec invoket; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1414 | |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1415 | if (fl->profile) |
| 1416 | getnstimeofday(&invoket); |
Tharun Kumar Merugu | e3edf3e | 2017-07-27 12:34:07 +0530 | [diff] [blame] | 1417 | |
Tharun Kumar Merugu | d4d07948 | 2017-09-06 11:22:19 +0530 | [diff] [blame] | 1418 | |
Tharun Kumar Merugu | e3edf3e | 2017-07-27 12:34:07 +0530 | [diff] [blame] | 1419 | VERIFY(err, fl->sctx != NULL); |
| 1420 | if (err) |
| 1421 | goto bail; |
| 1422 | VERIFY(err, fl->cid >= 0 && fl->cid < NUM_CHANNELS); |
| 1423 | if (err) |
| 1424 | goto bail; |
| 1425 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1426 | if (!kernel) { |
| 1427 | VERIFY(err, 0 == context_restore_interrupted(fl, inv, |
| 1428 | &ctx)); |
| 1429 | if (err) |
| 1430 | goto bail; |
| 1431 | if (fl->sctx->smmu.faults) |
| 1432 | err = FASTRPC_ENOSUCH; |
| 1433 | if (err) |
| 1434 | goto bail; |
| 1435 | if (ctx) |
| 1436 | goto wait; |
| 1437 | } |
| 1438 | |
| 1439 | VERIFY(err, 0 == context_alloc(fl, kernel, inv, &ctx)); |
| 1440 | if (err) |
| 1441 | goto bail; |
| 1442 | |
| 1443 | if (REMOTE_SCALARS_LENGTH(ctx->sc)) { |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1444 | PERF(fl->profile, fl->perf.getargs, |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1445 | VERIFY(err, 0 == get_args(kernel, ctx)); |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1446 | PERF_END); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1447 | if (err) |
| 1448 | goto bail; |
| 1449 | } |
| 1450 | |
Sathish Ambley | c432b50 | 2017-06-05 12:03:42 -0700 | [diff] [blame] | 1451 | if (!fl->sctx->smmu.coherent) |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1452 | inv_args_pre(ctx); |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1453 | PERF(fl->profile, fl->perf.link, |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1454 | VERIFY(err, 0 == fastrpc_invoke_send(ctx, kernel, invoke->handle)); |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1455 | PERF_END); |
| 1456 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1457 | if (err) |
| 1458 | goto bail; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1459 | wait: |
| 1460 | if (kernel) |
| 1461 | wait_for_completion(&ctx->work); |
| 1462 | else { |
| 1463 | interrupted = wait_for_completion_interruptible(&ctx->work); |
| 1464 | VERIFY(err, 0 == (err = interrupted)); |
| 1465 | if (err) |
| 1466 | goto bail; |
| 1467 | } |
Sathish Ambley | c432b50 | 2017-06-05 12:03:42 -0700 | [diff] [blame] | 1468 | |
| 1469 | PERF(fl->profile, fl->perf.invargs, |
| 1470 | if (!fl->sctx->smmu.coherent) |
| 1471 | inv_args(ctx); |
| 1472 | PERF_END); |
| 1473 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1474 | VERIFY(err, 0 == (err = ctx->retval)); |
| 1475 | if (err) |
| 1476 | goto bail; |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1477 | |
| 1478 | PERF(fl->profile, fl->perf.putargs, |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1479 | VERIFY(err, 0 == put_args(kernel, ctx, invoke->pra)); |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1480 | PERF_END); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1481 | if (err) |
| 1482 | goto bail; |
| 1483 | bail: |
| 1484 | if (ctx && interrupted == -ERESTARTSYS) |
| 1485 | context_save_interrupted(ctx); |
| 1486 | else if (ctx) |
| 1487 | context_free(ctx); |
| 1488 | if (fl->ssrcount != fl->apps->channel[cid].ssrcount) |
| 1489 | err = ECONNRESET; |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 1490 | |
| 1491 | if (fl->profile && !interrupted) { |
| 1492 | if (invoke->handle != FASTRPC_STATIC_HANDLE_LISTENER) |
| 1493 | fl->perf.invoke += getnstimediff(&invoket); |
| 1494 | if (!(invoke->handle >= 0 && |
| 1495 | invoke->handle <= FASTRPC_STATIC_HANDLE_MAX)) |
| 1496 | fl->perf.count++; |
| 1497 | } |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1498 | return err; |
| 1499 | } |
| 1500 | |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 1501 | static int fastrpc_channel_open(struct fastrpc_file *fl); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1502 | static int fastrpc_init_process(struct fastrpc_file *fl, |
Sathish Ambley | d6300c3 | 2017-01-18 09:50:43 -0800 | [diff] [blame] | 1503 | struct fastrpc_ioctl_init_attrs *uproc) |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1504 | { |
| 1505 | int err = 0; |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1506 | struct fastrpc_ioctl_invoke_crc ioctl; |
Sathish Ambley | d6300c3 | 2017-01-18 09:50:43 -0800 | [diff] [blame] | 1507 | struct fastrpc_ioctl_init *init = &uproc->init; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1508 | struct smq_phy_page pages[1]; |
| 1509 | struct fastrpc_mmap *file = 0, *mem = 0; |
| 1510 | |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 1511 | VERIFY(err, !fastrpc_channel_open(fl)); |
| 1512 | if (err) |
| 1513 | goto bail; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1514 | if (init->flags == FASTRPC_INIT_ATTACH) { |
| 1515 | remote_arg_t ra[1]; |
Tharun Kumar Merugu | d4d07948 | 2017-09-06 11:22:19 +0530 | [diff] [blame] | 1516 | int tgid = fl->tgid; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1517 | |
| 1518 | ra[0].buf.pv = (void *)&tgid; |
| 1519 | ra[0].buf.len = sizeof(tgid); |
| 1520 | ioctl.inv.handle = 1; |
| 1521 | ioctl.inv.sc = REMOTE_SCALARS_MAKE(0, 1, 0); |
| 1522 | ioctl.inv.pra = ra; |
| 1523 | ioctl.fds = 0; |
| 1524 | ioctl.attrs = 0; |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1525 | ioctl.crc = NULL; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1526 | fl->pd = 0; |
| 1527 | VERIFY(err, !(err = fastrpc_internal_invoke(fl, |
| 1528 | FASTRPC_MODE_PARALLEL, 1, &ioctl))); |
| 1529 | if (err) |
| 1530 | goto bail; |
| 1531 | } else if (init->flags == FASTRPC_INIT_CREATE) { |
Sathish Ambley | d6300c3 | 2017-01-18 09:50:43 -0800 | [diff] [blame] | 1532 | remote_arg_t ra[6]; |
| 1533 | int fds[6]; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1534 | int mflags = 0; |
| 1535 | struct { |
| 1536 | int pgid; |
| 1537 | int namelen; |
| 1538 | int filelen; |
| 1539 | int pageslen; |
Sathish Ambley | d6300c3 | 2017-01-18 09:50:43 -0800 | [diff] [blame] | 1540 | int attrs; |
| 1541 | int siglen; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1542 | } inbuf; |
| 1543 | |
Tharun Kumar Merugu | d4d07948 | 2017-09-06 11:22:19 +0530 | [diff] [blame] | 1544 | inbuf.pgid = fl->tgid; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1545 | inbuf.namelen = strlen(current->comm) + 1; |
| 1546 | inbuf.filelen = init->filelen; |
| 1547 | fl->pd = 1; |
| 1548 | if (init->filelen) { |
| 1549 | VERIFY(err, !fastrpc_mmap_create(fl, init->filefd, 0, |
| 1550 | init->file, init->filelen, mflags, &file)); |
| 1551 | if (err) |
| 1552 | goto bail; |
| 1553 | } |
| 1554 | inbuf.pageslen = 1; |
| 1555 | VERIFY(err, !fastrpc_mmap_create(fl, init->memfd, 0, |
| 1556 | init->mem, init->memlen, mflags, &mem)); |
| 1557 | if (err) |
| 1558 | goto bail; |
| 1559 | inbuf.pageslen = 1; |
| 1560 | ra[0].buf.pv = (void *)&inbuf; |
| 1561 | ra[0].buf.len = sizeof(inbuf); |
| 1562 | fds[0] = 0; |
| 1563 | |
| 1564 | ra[1].buf.pv = (void *)current->comm; |
| 1565 | ra[1].buf.len = inbuf.namelen; |
| 1566 | fds[1] = 0; |
| 1567 | |
| 1568 | ra[2].buf.pv = (void *)init->file; |
| 1569 | ra[2].buf.len = inbuf.filelen; |
| 1570 | fds[2] = init->filefd; |
| 1571 | |
| 1572 | pages[0].addr = mem->phys; |
| 1573 | pages[0].size = mem->size; |
| 1574 | ra[3].buf.pv = (void *)pages; |
| 1575 | ra[3].buf.len = 1 * sizeof(*pages); |
| 1576 | fds[3] = 0; |
| 1577 | |
Sathish Ambley | d6300c3 | 2017-01-18 09:50:43 -0800 | [diff] [blame] | 1578 | inbuf.attrs = uproc->attrs; |
| 1579 | ra[4].buf.pv = (void *)&(inbuf.attrs); |
| 1580 | ra[4].buf.len = sizeof(inbuf.attrs); |
| 1581 | fds[4] = 0; |
| 1582 | |
| 1583 | inbuf.siglen = uproc->siglen; |
| 1584 | ra[5].buf.pv = (void *)&(inbuf.siglen); |
| 1585 | ra[5].buf.len = sizeof(inbuf.siglen); |
| 1586 | fds[5] = 0; |
| 1587 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1588 | ioctl.inv.handle = 1; |
| 1589 | ioctl.inv.sc = REMOTE_SCALARS_MAKE(6, 4, 0); |
Sathish Ambley | d6300c3 | 2017-01-18 09:50:43 -0800 | [diff] [blame] | 1590 | if (uproc->attrs) |
| 1591 | ioctl.inv.sc = REMOTE_SCALARS_MAKE(7, 6, 0); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1592 | ioctl.inv.pra = ra; |
| 1593 | ioctl.fds = fds; |
| 1594 | ioctl.attrs = 0; |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1595 | ioctl.crc = NULL; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1596 | VERIFY(err, !(err = fastrpc_internal_invoke(fl, |
| 1597 | FASTRPC_MODE_PARALLEL, 1, &ioctl))); |
| 1598 | if (err) |
| 1599 | goto bail; |
| 1600 | } else { |
| 1601 | err = -ENOTTY; |
| 1602 | } |
| 1603 | bail: |
| 1604 | if (mem && err) |
| 1605 | fastrpc_mmap_free(mem); |
| 1606 | if (file) |
| 1607 | fastrpc_mmap_free(file); |
| 1608 | return err; |
| 1609 | } |
| 1610 | |
| 1611 | static int fastrpc_release_current_dsp_process(struct fastrpc_file *fl) |
| 1612 | { |
| 1613 | int err = 0; |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1614 | struct fastrpc_ioctl_invoke_crc ioctl; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1615 | remote_arg_t ra[1]; |
| 1616 | int tgid = 0; |
| 1617 | |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 1618 | VERIFY(err, fl->cid >= 0 && fl->cid < NUM_CHANNELS); |
| 1619 | if (err) |
| 1620 | goto bail; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1621 | VERIFY(err, fl->apps->channel[fl->cid].chan != 0); |
| 1622 | if (err) |
| 1623 | goto bail; |
| 1624 | tgid = fl->tgid; |
| 1625 | ra[0].buf.pv = (void *)&tgid; |
| 1626 | ra[0].buf.len = sizeof(tgid); |
| 1627 | ioctl.inv.handle = 1; |
| 1628 | ioctl.inv.sc = REMOTE_SCALARS_MAKE(1, 1, 0); |
| 1629 | ioctl.inv.pra = ra; |
| 1630 | ioctl.fds = 0; |
| 1631 | ioctl.attrs = 0; |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1632 | ioctl.crc = NULL; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1633 | VERIFY(err, 0 == (err = fastrpc_internal_invoke(fl, |
| 1634 | FASTRPC_MODE_PARALLEL, 1, &ioctl))); |
| 1635 | bail: |
| 1636 | return err; |
| 1637 | } |
| 1638 | |
| 1639 | static int fastrpc_mmap_on_dsp(struct fastrpc_file *fl, uint32_t flags, |
| 1640 | struct fastrpc_mmap *map) |
| 1641 | { |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1642 | struct fastrpc_ioctl_invoke_crc ioctl; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1643 | struct smq_phy_page page; |
| 1644 | int num = 1; |
| 1645 | remote_arg_t ra[3]; |
| 1646 | int err = 0; |
| 1647 | struct { |
| 1648 | int pid; |
| 1649 | uint32_t flags; |
| 1650 | uintptr_t vaddrin; |
| 1651 | int num; |
| 1652 | } inargs; |
| 1653 | struct { |
| 1654 | uintptr_t vaddrout; |
| 1655 | } routargs; |
| 1656 | |
Tharun Kumar Merugu | d4d07948 | 2017-09-06 11:22:19 +0530 | [diff] [blame] | 1657 | inargs.pid = fl->tgid; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1658 | inargs.vaddrin = (uintptr_t)map->va; |
| 1659 | inargs.flags = flags; |
| 1660 | inargs.num = fl->apps->compat ? num * sizeof(page) : num; |
| 1661 | ra[0].buf.pv = (void *)&inargs; |
| 1662 | ra[0].buf.len = sizeof(inargs); |
| 1663 | page.addr = map->phys; |
| 1664 | page.size = map->size; |
| 1665 | ra[1].buf.pv = (void *)&page; |
| 1666 | ra[1].buf.len = num * sizeof(page); |
| 1667 | |
| 1668 | ra[2].buf.pv = (void *)&routargs; |
| 1669 | ra[2].buf.len = sizeof(routargs); |
| 1670 | |
| 1671 | ioctl.inv.handle = 1; |
| 1672 | if (fl->apps->compat) |
| 1673 | ioctl.inv.sc = REMOTE_SCALARS_MAKE(4, 2, 1); |
| 1674 | else |
| 1675 | ioctl.inv.sc = REMOTE_SCALARS_MAKE(2, 2, 1); |
| 1676 | ioctl.inv.pra = ra; |
| 1677 | ioctl.fds = 0; |
| 1678 | ioctl.attrs = 0; |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1679 | ioctl.crc = NULL; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1680 | VERIFY(err, 0 == (err = fastrpc_internal_invoke(fl, |
| 1681 | FASTRPC_MODE_PARALLEL, 1, &ioctl))); |
| 1682 | map->raddr = (uintptr_t)routargs.vaddrout; |
| 1683 | |
| 1684 | return err; |
| 1685 | } |
| 1686 | |
| 1687 | static int fastrpc_munmap_on_dsp(struct fastrpc_file *fl, |
| 1688 | struct fastrpc_mmap *map) |
| 1689 | { |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1690 | struct fastrpc_ioctl_invoke_crc ioctl; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1691 | remote_arg_t ra[1]; |
| 1692 | int err = 0; |
| 1693 | struct { |
| 1694 | int pid; |
| 1695 | uintptr_t vaddrout; |
| 1696 | ssize_t size; |
| 1697 | } inargs; |
| 1698 | |
Tharun Kumar Merugu | d4d07948 | 2017-09-06 11:22:19 +0530 | [diff] [blame] | 1699 | inargs.pid = fl->tgid; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1700 | inargs.size = map->size; |
| 1701 | inargs.vaddrout = map->raddr; |
| 1702 | ra[0].buf.pv = (void *)&inargs; |
| 1703 | ra[0].buf.len = sizeof(inargs); |
| 1704 | |
| 1705 | ioctl.inv.handle = 1; |
| 1706 | if (fl->apps->compat) |
| 1707 | ioctl.inv.sc = REMOTE_SCALARS_MAKE(5, 1, 0); |
| 1708 | else |
| 1709 | ioctl.inv.sc = REMOTE_SCALARS_MAKE(3, 1, 0); |
| 1710 | ioctl.inv.pra = ra; |
| 1711 | ioctl.fds = 0; |
| 1712 | ioctl.attrs = 0; |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 1713 | ioctl.crc = NULL; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1714 | VERIFY(err, 0 == (err = fastrpc_internal_invoke(fl, |
| 1715 | FASTRPC_MODE_PARALLEL, 1, &ioctl))); |
| 1716 | return err; |
| 1717 | } |
| 1718 | |
| 1719 | static int fastrpc_mmap_remove(struct fastrpc_file *fl, uintptr_t va, |
| 1720 | ssize_t len, struct fastrpc_mmap **ppmap); |
| 1721 | |
| 1722 | static void fastrpc_mmap_add(struct fastrpc_mmap *map); |
| 1723 | |
| 1724 | static int fastrpc_internal_munmap(struct fastrpc_file *fl, |
| 1725 | struct fastrpc_ioctl_munmap *ud) |
| 1726 | { |
| 1727 | int err = 0; |
| 1728 | struct fastrpc_mmap *map = 0; |
| 1729 | |
| 1730 | VERIFY(err, !fastrpc_mmap_remove(fl, ud->vaddrout, ud->size, &map)); |
| 1731 | if (err) |
| 1732 | goto bail; |
| 1733 | VERIFY(err, !fastrpc_munmap_on_dsp(fl, map)); |
| 1734 | if (err) |
| 1735 | goto bail; |
| 1736 | fastrpc_mmap_free(map); |
| 1737 | bail: |
| 1738 | if (err && map) |
| 1739 | fastrpc_mmap_add(map); |
| 1740 | return err; |
| 1741 | } |
| 1742 | |
| 1743 | static int fastrpc_internal_mmap(struct fastrpc_file *fl, |
| 1744 | struct fastrpc_ioctl_mmap *ud) |
| 1745 | { |
| 1746 | |
| 1747 | struct fastrpc_mmap *map = 0; |
| 1748 | int err = 0; |
| 1749 | |
| 1750 | if (!fastrpc_mmap_find(fl, ud->fd, (uintptr_t)ud->vaddrin, ud->size, |
Sathish Ambley | ae5ee54 | 2017-01-16 22:24:23 -0800 | [diff] [blame] | 1751 | ud->flags, 1, &map)) |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1752 | return 0; |
| 1753 | |
| 1754 | VERIFY(err, !fastrpc_mmap_create(fl, ud->fd, 0, |
| 1755 | (uintptr_t)ud->vaddrin, ud->size, ud->flags, &map)); |
| 1756 | if (err) |
| 1757 | goto bail; |
| 1758 | VERIFY(err, 0 == fastrpc_mmap_on_dsp(fl, ud->flags, map)); |
| 1759 | if (err) |
| 1760 | goto bail; |
| 1761 | ud->vaddrout = map->raddr; |
| 1762 | bail: |
| 1763 | if (err && map) |
| 1764 | fastrpc_mmap_free(map); |
| 1765 | return err; |
| 1766 | } |
| 1767 | |
| 1768 | static void fastrpc_channel_close(struct kref *kref) |
| 1769 | { |
| 1770 | struct fastrpc_apps *me = &gfa; |
| 1771 | struct fastrpc_channel_ctx *ctx; |
| 1772 | int cid; |
| 1773 | |
| 1774 | ctx = container_of(kref, struct fastrpc_channel_ctx, kref); |
| 1775 | cid = ctx - &gcinfo[0]; |
| 1776 | fastrpc_glink_close(ctx->chan, cid); |
| 1777 | ctx->chan = 0; |
Tharun Kumar Merugu | 532767d | 2017-06-20 19:53:13 +0530 | [diff] [blame] | 1778 | glink_unregister_link_state_cb(ctx->link.link_notify_handle); |
| 1779 | ctx->link.link_notify_handle = NULL; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1780 | mutex_unlock(&me->smd_mutex); |
| 1781 | pr_info("'closed /dev/%s c %d %d'\n", gcinfo[cid].name, |
| 1782 | MAJOR(me->dev_no), cid); |
| 1783 | } |
| 1784 | |
| 1785 | static void fastrpc_context_list_dtor(struct fastrpc_file *fl); |
| 1786 | |
| 1787 | static int fastrpc_session_alloc_locked(struct fastrpc_channel_ctx *chan, |
| 1788 | int secure, struct fastrpc_session_ctx **session) |
| 1789 | { |
| 1790 | struct fastrpc_apps *me = &gfa; |
| 1791 | int idx = 0, err = 0; |
| 1792 | |
| 1793 | if (chan->sesscount) { |
| 1794 | for (idx = 0; idx < chan->sesscount; ++idx) { |
| 1795 | if (!chan->session[idx].used && |
| 1796 | chan->session[idx].smmu.secure == secure) { |
| 1797 | chan->session[idx].used = 1; |
| 1798 | break; |
| 1799 | } |
| 1800 | } |
| 1801 | VERIFY(err, idx < chan->sesscount); |
| 1802 | if (err) |
| 1803 | goto bail; |
| 1804 | chan->session[idx].smmu.faults = 0; |
| 1805 | } else { |
| 1806 | VERIFY(err, me->dev != NULL); |
| 1807 | if (err) |
| 1808 | goto bail; |
| 1809 | chan->session[0].dev = me->dev; |
| 1810 | } |
| 1811 | |
| 1812 | *session = &chan->session[idx]; |
| 1813 | bail: |
| 1814 | return err; |
| 1815 | } |
| 1816 | |
| 1817 | bool fastrpc_glink_notify_rx_intent_req(void *h, const void *priv, size_t size) |
| 1818 | { |
| 1819 | if (glink_queue_rx_intent(h, NULL, size)) |
| 1820 | return false; |
| 1821 | return true; |
| 1822 | } |
| 1823 | |
| 1824 | void fastrpc_glink_notify_tx_done(void *handle, const void *priv, |
| 1825 | const void *pkt_priv, const void *ptr) |
| 1826 | { |
| 1827 | } |
| 1828 | |
| 1829 | void fastrpc_glink_notify_rx(void *handle, const void *priv, |
| 1830 | const void *pkt_priv, const void *ptr, size_t size) |
| 1831 | { |
| 1832 | struct smq_invoke_rsp *rsp = (struct smq_invoke_rsp *)ptr; |
c_mtharu | fdac689 | 2017-10-12 13:09:01 +0530 | [diff] [blame^] | 1833 | struct smq_invoke_ctx *ctx; |
| 1834 | int err = 0; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1835 | |
c_mtharu | fdac689 | 2017-10-12 13:09:01 +0530 | [diff] [blame^] | 1836 | VERIFY(err, (rsp && size >= sizeof(*rsp))); |
| 1837 | if (err) |
Tharun Kumar Merugu | 622d871 | 2017-09-15 15:30:06 +0530 | [diff] [blame] | 1838 | goto bail; |
| 1839 | |
c_mtharu | fdac689 | 2017-10-12 13:09:01 +0530 | [diff] [blame^] | 1840 | ctx = (struct smq_invoke_ctx *)(uint64_to_ptr(rsp->ctx & ~1)); |
| 1841 | VERIFY(err, (ctx && ctx->magic == FASTRPC_CTX_MAGIC)); |
| 1842 | if (err) |
Tharun Kumar Merugu | 622d871 | 2017-09-15 15:30:06 +0530 | [diff] [blame] | 1843 | goto bail; |
Tharun Kumar Merugu | 622d871 | 2017-09-15 15:30:06 +0530 | [diff] [blame] | 1844 | |
c_mtharu | fdac689 | 2017-10-12 13:09:01 +0530 | [diff] [blame^] | 1845 | context_notify_user(ctx, rsp->retval); |
Tharun Kumar Merugu | 622d871 | 2017-09-15 15:30:06 +0530 | [diff] [blame] | 1846 | bail: |
c_mtharu | fdac689 | 2017-10-12 13:09:01 +0530 | [diff] [blame^] | 1847 | if (err) |
| 1848 | pr_err("adsprpc: invalid response or context\n"); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1849 | glink_rx_done(handle, ptr, true); |
| 1850 | } |
| 1851 | |
| 1852 | void fastrpc_glink_notify_state(void *handle, const void *priv, |
| 1853 | unsigned int event) |
| 1854 | { |
| 1855 | struct fastrpc_apps *me = &gfa; |
| 1856 | int cid = (int)(uintptr_t)priv; |
| 1857 | struct fastrpc_glink_info *link; |
| 1858 | |
| 1859 | if (cid < 0 || cid >= NUM_CHANNELS) |
| 1860 | return; |
| 1861 | link = &me->channel[cid].link; |
| 1862 | switch (event) { |
| 1863 | case GLINK_CONNECTED: |
| 1864 | link->port_state = FASTRPC_LINK_CONNECTED; |
Tharun Kumar Merugu | 53a8ec9 | 2017-07-14 15:52:49 +0530 | [diff] [blame] | 1865 | complete(&me->channel[cid].workport); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1866 | break; |
| 1867 | case GLINK_LOCAL_DISCONNECTED: |
| 1868 | link->port_state = FASTRPC_LINK_DISCONNECTED; |
| 1869 | break; |
| 1870 | case GLINK_REMOTE_DISCONNECTED: |
Tharun Kumar Merugu | ca0db526 | 2017-05-10 12:53:12 +0530 | [diff] [blame] | 1871 | if (me->channel[cid].chan) { |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1872 | fastrpc_glink_close(me->channel[cid].chan, cid); |
| 1873 | me->channel[cid].chan = 0; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1874 | } |
| 1875 | break; |
| 1876 | default: |
| 1877 | break; |
| 1878 | } |
| 1879 | } |
| 1880 | |
| 1881 | static int fastrpc_session_alloc(struct fastrpc_channel_ctx *chan, int secure, |
| 1882 | struct fastrpc_session_ctx **session) |
| 1883 | { |
| 1884 | int err = 0; |
| 1885 | struct fastrpc_apps *me = &gfa; |
| 1886 | |
| 1887 | mutex_lock(&me->smd_mutex); |
| 1888 | if (!*session) |
| 1889 | err = fastrpc_session_alloc_locked(chan, secure, session); |
| 1890 | mutex_unlock(&me->smd_mutex); |
| 1891 | return err; |
| 1892 | } |
| 1893 | |
| 1894 | static void fastrpc_session_free(struct fastrpc_channel_ctx *chan, |
| 1895 | struct fastrpc_session_ctx *session) |
| 1896 | { |
| 1897 | struct fastrpc_apps *me = &gfa; |
| 1898 | |
| 1899 | mutex_lock(&me->smd_mutex); |
| 1900 | session->used = 0; |
| 1901 | mutex_unlock(&me->smd_mutex); |
| 1902 | } |
| 1903 | |
| 1904 | static int fastrpc_file_free(struct fastrpc_file *fl) |
| 1905 | { |
| 1906 | struct hlist_node *n; |
| 1907 | struct fastrpc_mmap *map = 0; |
| 1908 | int cid; |
| 1909 | |
| 1910 | if (!fl) |
| 1911 | return 0; |
| 1912 | cid = fl->cid; |
| 1913 | |
Tharun Kumar Merugu | 622d871 | 2017-09-15 15:30:06 +0530 | [diff] [blame] | 1914 | (void)fastrpc_release_current_dsp_process(fl); |
| 1915 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1916 | spin_lock(&fl->apps->hlock); |
| 1917 | hlist_del_init(&fl->hn); |
| 1918 | spin_unlock(&fl->apps->hlock); |
| 1919 | |
Sathish Ambley | d7fbcbb | 2017-03-08 10:55:48 -0800 | [diff] [blame] | 1920 | if (!fl->sctx) { |
| 1921 | kfree(fl); |
| 1922 | return 0; |
| 1923 | } |
tharun kumar | 9f899ea | 2017-07-03 17:07:03 +0530 | [diff] [blame] | 1924 | spin_lock(&fl->hlock); |
| 1925 | fl->file_close = 1; |
| 1926 | spin_unlock(&fl->hlock); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1927 | fastrpc_context_list_dtor(fl); |
| 1928 | fastrpc_buf_list_free(fl); |
| 1929 | hlist_for_each_entry_safe(map, n, &fl->maps, hn) { |
| 1930 | fastrpc_mmap_free(map); |
| 1931 | } |
| 1932 | if (fl->ssrcount == fl->apps->channel[cid].ssrcount) |
| 1933 | kref_put_mutex(&fl->apps->channel[cid].kref, |
| 1934 | fastrpc_channel_close, &fl->apps->smd_mutex); |
| 1935 | if (fl->sctx) |
| 1936 | fastrpc_session_free(&fl->apps->channel[cid], fl->sctx); |
| 1937 | if (fl->secsctx) |
| 1938 | fastrpc_session_free(&fl->apps->channel[cid], fl->secsctx); |
| 1939 | kfree(fl); |
| 1940 | return 0; |
| 1941 | } |
| 1942 | |
| 1943 | static int fastrpc_device_release(struct inode *inode, struct file *file) |
| 1944 | { |
| 1945 | struct fastrpc_file *fl = (struct fastrpc_file *)file->private_data; |
| 1946 | |
| 1947 | if (fl) { |
Tharun Kumar Merugu | 5f6ca61c | 2017-08-11 11:43:11 +0530 | [diff] [blame] | 1948 | if (fl->qos_request && pm_qos_request_active(&fl->pm_qos_req)) |
| 1949 | pm_qos_remove_request(&fl->pm_qos_req); |
Sathish Ambley | 1ca6823 | 2017-01-19 10:32:55 -0800 | [diff] [blame] | 1950 | if (fl->debugfs_file != NULL) |
| 1951 | debugfs_remove(fl->debugfs_file); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 1952 | fastrpc_file_free(fl); |
| 1953 | file->private_data = 0; |
| 1954 | } |
| 1955 | return 0; |
| 1956 | } |
| 1957 | |
| 1958 | static void fastrpc_link_state_handler(struct glink_link_state_cb_info *cb_info, |
| 1959 | void *priv) |
| 1960 | { |
| 1961 | struct fastrpc_apps *me = &gfa; |
| 1962 | int cid = (int)((uintptr_t)priv); |
| 1963 | struct fastrpc_glink_info *link; |
| 1964 | |
| 1965 | if (cid < 0 || cid >= NUM_CHANNELS) |
| 1966 | return; |
| 1967 | |
| 1968 | link = &me->channel[cid].link; |
| 1969 | switch (cb_info->link_state) { |
| 1970 | case GLINK_LINK_STATE_UP: |
| 1971 | link->link_state = FASTRPC_LINK_STATE_UP; |
| 1972 | complete(&me->channel[cid].work); |
| 1973 | break; |
| 1974 | case GLINK_LINK_STATE_DOWN: |
| 1975 | link->link_state = FASTRPC_LINK_STATE_DOWN; |
| 1976 | break; |
| 1977 | default: |
| 1978 | pr_err("adsprpc: unknown link state %d\n", cb_info->link_state); |
| 1979 | break; |
| 1980 | } |
| 1981 | } |
| 1982 | |
| 1983 | static int fastrpc_glink_register(int cid, struct fastrpc_apps *me) |
| 1984 | { |
| 1985 | int err = 0; |
| 1986 | struct fastrpc_glink_info *link; |
| 1987 | |
| 1988 | VERIFY(err, (cid >= 0 && cid < NUM_CHANNELS)); |
| 1989 | if (err) |
| 1990 | goto bail; |
| 1991 | |
| 1992 | link = &me->channel[cid].link; |
| 1993 | if (link->link_notify_handle != NULL) |
| 1994 | goto bail; |
| 1995 | |
| 1996 | link->link_info.glink_link_state_notif_cb = fastrpc_link_state_handler; |
| 1997 | link->link_notify_handle = glink_register_link_state_cb( |
| 1998 | &link->link_info, |
| 1999 | (void *)((uintptr_t)cid)); |
| 2000 | VERIFY(err, !IS_ERR_OR_NULL(me->channel[cid].link.link_notify_handle)); |
| 2001 | if (err) { |
| 2002 | link->link_notify_handle = NULL; |
| 2003 | goto bail; |
| 2004 | } |
| 2005 | VERIFY(err, wait_for_completion_timeout(&me->channel[cid].work, |
| 2006 | RPC_TIMEOUT)); |
| 2007 | bail: |
| 2008 | return err; |
| 2009 | } |
| 2010 | |
| 2011 | static void fastrpc_glink_close(void *chan, int cid) |
| 2012 | { |
| 2013 | int err = 0; |
| 2014 | struct fastrpc_glink_info *link; |
| 2015 | |
| 2016 | VERIFY(err, (cid >= 0 && cid < NUM_CHANNELS)); |
| 2017 | if (err) |
| 2018 | return; |
| 2019 | link = &gfa.channel[cid].link; |
| 2020 | |
Tharun Kumar Merugu | 53a8ec9 | 2017-07-14 15:52:49 +0530 | [diff] [blame] | 2021 | if (link->port_state == FASTRPC_LINK_CONNECTED) { |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2022 | link->port_state = FASTRPC_LINK_DISCONNECTING; |
| 2023 | glink_close(chan); |
| 2024 | } |
| 2025 | } |
| 2026 | |
| 2027 | static int fastrpc_glink_open(int cid) |
| 2028 | { |
| 2029 | int err = 0; |
| 2030 | void *handle = NULL; |
| 2031 | struct fastrpc_apps *me = &gfa; |
| 2032 | struct glink_open_config *cfg; |
| 2033 | struct fastrpc_glink_info *link; |
| 2034 | |
| 2035 | VERIFY(err, (cid >= 0 && cid < NUM_CHANNELS)); |
| 2036 | if (err) |
| 2037 | goto bail; |
| 2038 | link = &me->channel[cid].link; |
| 2039 | cfg = &me->channel[cid].link.cfg; |
| 2040 | VERIFY(err, (link->link_state == FASTRPC_LINK_STATE_UP)); |
| 2041 | if (err) |
| 2042 | goto bail; |
| 2043 | |
Tharun Kumar Merugu | ca0db526 | 2017-05-10 12:53:12 +0530 | [diff] [blame] | 2044 | VERIFY(err, (link->port_state == FASTRPC_LINK_DISCONNECTED)); |
| 2045 | if (err) |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2046 | goto bail; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2047 | |
| 2048 | link->port_state = FASTRPC_LINK_CONNECTING; |
| 2049 | cfg->priv = (void *)(uintptr_t)cid; |
| 2050 | cfg->edge = gcinfo[cid].link.link_info.edge; |
| 2051 | cfg->transport = gcinfo[cid].link.link_info.transport; |
| 2052 | cfg->name = FASTRPC_GLINK_GUID; |
| 2053 | cfg->notify_rx = fastrpc_glink_notify_rx; |
| 2054 | cfg->notify_tx_done = fastrpc_glink_notify_tx_done; |
| 2055 | cfg->notify_state = fastrpc_glink_notify_state; |
| 2056 | cfg->notify_rx_intent_req = fastrpc_glink_notify_rx_intent_req; |
| 2057 | handle = glink_open(cfg); |
| 2058 | VERIFY(err, !IS_ERR_OR_NULL(handle)); |
c_mtharu | 6e1d26b | 2017-10-09 16:05:24 +0530 | [diff] [blame] | 2059 | if (err) { |
| 2060 | if (link->port_state == FASTRPC_LINK_CONNECTING) |
| 2061 | link->port_state = FASTRPC_LINK_DISCONNECTED; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2062 | goto bail; |
c_mtharu | 6e1d26b | 2017-10-09 16:05:24 +0530 | [diff] [blame] | 2063 | } |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2064 | me->channel[cid].chan = handle; |
| 2065 | bail: |
| 2066 | return err; |
| 2067 | } |
| 2068 | |
Sathish Ambley | 1ca6823 | 2017-01-19 10:32:55 -0800 | [diff] [blame] | 2069 | static int fastrpc_debugfs_open(struct inode *inode, struct file *filp) |
| 2070 | { |
| 2071 | filp->private_data = inode->i_private; |
| 2072 | return 0; |
| 2073 | } |
| 2074 | |
| 2075 | static ssize_t fastrpc_debugfs_read(struct file *filp, char __user *buffer, |
| 2076 | size_t count, loff_t *position) |
| 2077 | { |
| 2078 | struct fastrpc_file *fl = filp->private_data; |
| 2079 | struct hlist_node *n; |
| 2080 | struct fastrpc_buf *buf = 0; |
| 2081 | struct fastrpc_mmap *map = 0; |
| 2082 | struct smq_invoke_ctx *ictx = 0; |
| 2083 | struct fastrpc_channel_ctx *chan; |
| 2084 | struct fastrpc_session_ctx *sess; |
| 2085 | unsigned int len = 0; |
| 2086 | int i, j, ret = 0; |
| 2087 | char *fileinfo = NULL; |
| 2088 | |
| 2089 | fileinfo = kzalloc(DEBUGFS_SIZE, GFP_KERNEL); |
| 2090 | if (!fileinfo) |
| 2091 | goto bail; |
| 2092 | if (fl == NULL) { |
| 2093 | for (i = 0; i < NUM_CHANNELS; i++) { |
| 2094 | chan = &gcinfo[i]; |
| 2095 | len += scnprintf(fileinfo + len, |
| 2096 | DEBUGFS_SIZE - len, "%s\n\n", |
| 2097 | chan->name); |
| 2098 | len += scnprintf(fileinfo + len, |
| 2099 | DEBUGFS_SIZE - len, "%s %d\n", |
| 2100 | "sesscount:", chan->sesscount); |
| 2101 | for (j = 0; j < chan->sesscount; j++) { |
| 2102 | sess = &chan->session[j]; |
| 2103 | len += scnprintf(fileinfo + len, |
| 2104 | DEBUGFS_SIZE - len, |
| 2105 | "%s%d\n\n", "SESSION", j); |
| 2106 | len += scnprintf(fileinfo + len, |
| 2107 | DEBUGFS_SIZE - len, |
| 2108 | "%s %d\n", "sid:", |
| 2109 | sess->smmu.cb); |
| 2110 | len += scnprintf(fileinfo + len, |
| 2111 | DEBUGFS_SIZE - len, |
| 2112 | "%s %d\n", "SECURE:", |
| 2113 | sess->smmu.secure); |
| 2114 | } |
| 2115 | } |
| 2116 | } else { |
| 2117 | len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len, |
| 2118 | "%s %d\n\n", |
| 2119 | "PROCESS_ID:", fl->tgid); |
| 2120 | len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len, |
| 2121 | "%s %d\n\n", |
| 2122 | "CHANNEL_ID:", fl->cid); |
| 2123 | len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len, |
| 2124 | "%s %d\n\n", |
| 2125 | "SSRCOUNT:", fl->ssrcount); |
| 2126 | len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len, |
| 2127 | "%s\n", |
| 2128 | "LIST OF BUFS:"); |
| 2129 | spin_lock(&fl->hlock); |
| 2130 | hlist_for_each_entry_safe(buf, n, &fl->bufs, hn) { |
| 2131 | len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len, |
Tharun Kumar Merugu | ce56645 | 2017-08-17 15:29:59 +0530 | [diff] [blame] | 2132 | "%s %pK %s %pK %s %llx\n", "buf:", |
| 2133 | buf, "buf->virt:", buf->virt, |
| 2134 | "buf->phys:", buf->phys); |
Sathish Ambley | 1ca6823 | 2017-01-19 10:32:55 -0800 | [diff] [blame] | 2135 | } |
| 2136 | len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len, |
| 2137 | "\n%s\n", |
| 2138 | "LIST OF MAPS:"); |
| 2139 | hlist_for_each_entry_safe(map, n, &fl->maps, hn) { |
| 2140 | len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len, |
Tharun Kumar Merugu | ce56645 | 2017-08-17 15:29:59 +0530 | [diff] [blame] | 2141 | "%s %pK %s %lx %s %llx\n", |
Sathish Ambley | 1ca6823 | 2017-01-19 10:32:55 -0800 | [diff] [blame] | 2142 | "map:", map, |
| 2143 | "map->va:", map->va, |
| 2144 | "map->phys:", map->phys); |
| 2145 | } |
| 2146 | len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len, |
| 2147 | "\n%s\n", |
| 2148 | "LIST OF PENDING SMQCONTEXTS:"); |
| 2149 | hlist_for_each_entry_safe(ictx, n, &fl->clst.pending, hn) { |
| 2150 | len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len, |
Tharun Kumar Merugu | ce56645 | 2017-08-17 15:29:59 +0530 | [diff] [blame] | 2151 | "%s %pK %s %u %s %u %s %u\n", |
Sathish Ambley | 1ca6823 | 2017-01-19 10:32:55 -0800 | [diff] [blame] | 2152 | "smqcontext:", ictx, |
| 2153 | "sc:", ictx->sc, |
| 2154 | "tid:", ictx->pid, |
| 2155 | "handle", ictx->rpra->h); |
| 2156 | } |
| 2157 | len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len, |
| 2158 | "\n%s\n", |
| 2159 | "LIST OF INTERRUPTED SMQCONTEXTS:"); |
| 2160 | hlist_for_each_entry_safe(ictx, n, &fl->clst.interrupted, hn) { |
| 2161 | len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len, |
Tharun Kumar Merugu | ce56645 | 2017-08-17 15:29:59 +0530 | [diff] [blame] | 2162 | "%s %pK %s %u %s %u %s %u\n", |
Sathish Ambley | 1ca6823 | 2017-01-19 10:32:55 -0800 | [diff] [blame] | 2163 | "smqcontext:", ictx, |
| 2164 | "sc:", ictx->sc, |
| 2165 | "tid:", ictx->pid, |
| 2166 | "handle", ictx->rpra->h); |
| 2167 | } |
| 2168 | spin_unlock(&fl->hlock); |
| 2169 | } |
| 2170 | if (len > DEBUGFS_SIZE) |
| 2171 | len = DEBUGFS_SIZE; |
| 2172 | ret = simple_read_from_buffer(buffer, count, position, fileinfo, len); |
| 2173 | kfree(fileinfo); |
| 2174 | bail: |
| 2175 | return ret; |
| 2176 | } |
| 2177 | |
| 2178 | static const struct file_operations debugfs_fops = { |
| 2179 | .open = fastrpc_debugfs_open, |
| 2180 | .read = fastrpc_debugfs_read, |
| 2181 | }; |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2182 | static int fastrpc_channel_open(struct fastrpc_file *fl) |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2183 | { |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2184 | struct fastrpc_apps *me = &gfa; |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2185 | int cid, err = 0; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2186 | |
| 2187 | mutex_lock(&me->smd_mutex); |
| 2188 | |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2189 | VERIFY(err, fl && fl->sctx); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2190 | if (err) |
| 2191 | goto bail; |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2192 | cid = fl->cid; |
| 2193 | VERIFY(err, cid >= 0 && cid < NUM_CHANNELS); |
| 2194 | if (err) |
| 2195 | goto bail; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2196 | fl->ssrcount = me->channel[cid].ssrcount; |
| 2197 | if ((kref_get_unless_zero(&me->channel[cid].kref) == 0) || |
| 2198 | (me->channel[cid].chan == 0)) { |
Tharun Kumar Merugu | ca0db526 | 2017-05-10 12:53:12 +0530 | [diff] [blame] | 2199 | VERIFY(err, 0 == fastrpc_glink_register(cid, me)); |
| 2200 | if (err) |
| 2201 | goto bail; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2202 | VERIFY(err, 0 == fastrpc_glink_open(cid)); |
| 2203 | if (err) |
| 2204 | goto bail; |
| 2205 | |
Tharun Kumar Merugu | 53a8ec9 | 2017-07-14 15:52:49 +0530 | [diff] [blame] | 2206 | VERIFY(err, |
| 2207 | wait_for_completion_timeout(&me->channel[cid].workport, |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2208 | RPC_TIMEOUT)); |
| 2209 | if (err) { |
| 2210 | me->channel[cid].chan = 0; |
| 2211 | goto bail; |
| 2212 | } |
| 2213 | kref_init(&me->channel[cid].kref); |
| 2214 | pr_info("'opened /dev/%s c %d %d'\n", gcinfo[cid].name, |
| 2215 | MAJOR(me->dev_no), cid); |
Tharun Kumar Merugu | 88ba925 | 2017-08-09 12:15:41 +0530 | [diff] [blame] | 2216 | err = glink_queue_rx_intent(me->channel[cid].chan, NULL, 16); |
| 2217 | err |= glink_queue_rx_intent(me->channel[cid].chan, NULL, 64); |
Bruce Levy | 34c3c1c | 2017-07-31 17:08:58 -0700 | [diff] [blame] | 2218 | if (err) |
Tharun Kumar Merugu | 88ba925 | 2017-08-09 12:15:41 +0530 | [diff] [blame] | 2219 | pr_warn("adsprpc: initial intent fail for %d err %d\n", |
| 2220 | cid, err); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2221 | if (me->channel[cid].ssrcount != |
| 2222 | me->channel[cid].prevssrcount) { |
| 2223 | me->channel[cid].prevssrcount = |
| 2224 | me->channel[cid].ssrcount; |
| 2225 | } |
| 2226 | } |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2227 | |
| 2228 | bail: |
| 2229 | mutex_unlock(&me->smd_mutex); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2230 | return err; |
| 2231 | } |
| 2232 | |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2233 | static int fastrpc_device_open(struct inode *inode, struct file *filp) |
| 2234 | { |
| 2235 | int err = 0; |
Sathish Ambley | 567012b | 2017-03-06 11:55:04 -0800 | [diff] [blame] | 2236 | struct dentry *debugfs_file; |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2237 | struct fastrpc_file *fl = 0; |
| 2238 | struct fastrpc_apps *me = &gfa; |
| 2239 | |
| 2240 | VERIFY(err, fl = kzalloc(sizeof(*fl), GFP_KERNEL)); |
| 2241 | if (err) |
| 2242 | return err; |
Sathish Ambley | 567012b | 2017-03-06 11:55:04 -0800 | [diff] [blame] | 2243 | debugfs_file = debugfs_create_file(current->comm, 0644, debugfs_root, |
| 2244 | fl, &debugfs_fops); |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2245 | context_list_ctor(&fl->clst); |
| 2246 | spin_lock_init(&fl->hlock); |
| 2247 | INIT_HLIST_HEAD(&fl->maps); |
| 2248 | INIT_HLIST_HEAD(&fl->bufs); |
| 2249 | INIT_HLIST_NODE(&fl->hn); |
Tharun Kumar Merugu | d4d07948 | 2017-09-06 11:22:19 +0530 | [diff] [blame] | 2250 | fl->sessionid = 0; |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2251 | fl->tgid = current->tgid; |
| 2252 | fl->apps = me; |
| 2253 | fl->mode = FASTRPC_MODE_SERIAL; |
| 2254 | fl->cid = -1; |
Sathish Ambley | 567012b | 2017-03-06 11:55:04 -0800 | [diff] [blame] | 2255 | if (debugfs_file != NULL) |
| 2256 | fl->debugfs_file = debugfs_file; |
| 2257 | memset(&fl->perf, 0, sizeof(fl->perf)); |
Tharun Kumar Merugu | 5f6ca61c | 2017-08-11 11:43:11 +0530 | [diff] [blame] | 2258 | fl->qos_request = 0; |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2259 | filp->private_data = fl; |
| 2260 | spin_lock(&me->hlock); |
| 2261 | hlist_add_head(&fl->hn, &me->drivers); |
| 2262 | spin_unlock(&me->hlock); |
| 2263 | return 0; |
| 2264 | } |
| 2265 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2266 | static int fastrpc_get_info(struct fastrpc_file *fl, uint32_t *info) |
| 2267 | { |
| 2268 | int err = 0; |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2269 | uint32_t cid; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2270 | |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2271 | VERIFY(err, fl != 0); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2272 | if (err) |
| 2273 | goto bail; |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2274 | if (fl->cid == -1) { |
| 2275 | cid = *info; |
| 2276 | VERIFY(err, cid < NUM_CHANNELS); |
| 2277 | if (err) |
| 2278 | goto bail; |
| 2279 | fl->cid = cid; |
| 2280 | fl->ssrcount = fl->apps->channel[cid].ssrcount; |
| 2281 | VERIFY(err, !fastrpc_session_alloc_locked( |
| 2282 | &fl->apps->channel[cid], 0, &fl->sctx)); |
| 2283 | if (err) |
| 2284 | goto bail; |
| 2285 | } |
Tharun Kumar Merugu | 80be7d6 | 2017-08-02 11:03:22 +0530 | [diff] [blame] | 2286 | VERIFY(err, fl->sctx != NULL); |
| 2287 | if (err) |
| 2288 | goto bail; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2289 | *info = (fl->sctx->smmu.enabled ? 1 : 0); |
| 2290 | bail: |
| 2291 | return err; |
| 2292 | } |
| 2293 | |
Tharun Kumar Merugu | 5f6ca61c | 2017-08-11 11:43:11 +0530 | [diff] [blame] | 2294 | static int fastrpc_internal_control(struct fastrpc_file *fl, |
| 2295 | struct fastrpc_ioctl_control *cp) |
| 2296 | { |
| 2297 | int err = 0; |
| 2298 | int latency; |
| 2299 | |
| 2300 | VERIFY(err, !IS_ERR_OR_NULL(fl) && !IS_ERR_OR_NULL(fl->apps)); |
| 2301 | if (err) |
| 2302 | goto bail; |
| 2303 | VERIFY(err, !IS_ERR_OR_NULL(cp)); |
| 2304 | if (err) |
| 2305 | goto bail; |
| 2306 | |
| 2307 | switch (cp->req) { |
| 2308 | case FASTRPC_CONTROL_LATENCY: |
| 2309 | latency = cp->lp.enable == FASTRPC_LATENCY_CTRL_ENB ? |
| 2310 | fl->apps->latency : PM_QOS_DEFAULT_VALUE; |
| 2311 | VERIFY(err, latency != 0); |
| 2312 | if (err) |
| 2313 | goto bail; |
| 2314 | if (!fl->qos_request) { |
| 2315 | pm_qos_add_request(&fl->pm_qos_req, |
| 2316 | PM_QOS_CPU_DMA_LATENCY, latency); |
| 2317 | fl->qos_request = 1; |
| 2318 | } else |
| 2319 | pm_qos_update_request(&fl->pm_qos_req, latency); |
| 2320 | break; |
| 2321 | default: |
| 2322 | err = -ENOTTY; |
| 2323 | break; |
| 2324 | } |
| 2325 | bail: |
| 2326 | return err; |
| 2327 | } |
| 2328 | |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2329 | static long fastrpc_device_ioctl(struct file *file, unsigned int ioctl_num, |
| 2330 | unsigned long ioctl_param) |
| 2331 | { |
| 2332 | union { |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 2333 | struct fastrpc_ioctl_invoke_crc inv; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2334 | struct fastrpc_ioctl_mmap mmap; |
| 2335 | struct fastrpc_ioctl_munmap munmap; |
Sathish Ambley | d6300c3 | 2017-01-18 09:50:43 -0800 | [diff] [blame] | 2336 | struct fastrpc_ioctl_init_attrs init; |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 2337 | struct fastrpc_ioctl_perf perf; |
Tharun Kumar Merugu | 5f6ca61c | 2017-08-11 11:43:11 +0530 | [diff] [blame] | 2338 | struct fastrpc_ioctl_control cp; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2339 | } p; |
| 2340 | void *param = (char *)ioctl_param; |
| 2341 | struct fastrpc_file *fl = (struct fastrpc_file *)file->private_data; |
| 2342 | int size = 0, err = 0; |
| 2343 | uint32_t info; |
| 2344 | |
| 2345 | p.inv.fds = 0; |
| 2346 | p.inv.attrs = 0; |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 2347 | p.inv.crc = NULL; |
tharun kumar | 9f899ea | 2017-07-03 17:07:03 +0530 | [diff] [blame] | 2348 | spin_lock(&fl->hlock); |
| 2349 | if (fl->file_close == 1) { |
| 2350 | err = EBADF; |
| 2351 | pr_warn("ADSPRPC: fastrpc_device_release is happening, So not sending any new requests to DSP"); |
| 2352 | spin_unlock(&fl->hlock); |
| 2353 | goto bail; |
| 2354 | } |
| 2355 | spin_unlock(&fl->hlock); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2356 | |
| 2357 | switch (ioctl_num) { |
| 2358 | case FASTRPC_IOCTL_INVOKE: |
| 2359 | size = sizeof(struct fastrpc_ioctl_invoke); |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 2360 | /* fall through */ |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2361 | case FASTRPC_IOCTL_INVOKE_FD: |
| 2362 | if (!size) |
| 2363 | size = sizeof(struct fastrpc_ioctl_invoke_fd); |
| 2364 | /* fall through */ |
| 2365 | case FASTRPC_IOCTL_INVOKE_ATTRS: |
| 2366 | if (!size) |
| 2367 | size = sizeof(struct fastrpc_ioctl_invoke_attrs); |
Sathish Ambley | bae5190 | 2017-07-03 15:00:49 -0700 | [diff] [blame] | 2368 | /* fall through */ |
| 2369 | case FASTRPC_IOCTL_INVOKE_CRC: |
| 2370 | if (!size) |
| 2371 | size = sizeof(struct fastrpc_ioctl_invoke_crc); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2372 | VERIFY(err, 0 == copy_from_user(&p.inv, param, size)); |
| 2373 | if (err) |
| 2374 | goto bail; |
| 2375 | VERIFY(err, 0 == (err = fastrpc_internal_invoke(fl, fl->mode, |
| 2376 | 0, &p.inv))); |
| 2377 | if (err) |
| 2378 | goto bail; |
| 2379 | break; |
| 2380 | case FASTRPC_IOCTL_MMAP: |
| 2381 | VERIFY(err, 0 == copy_from_user(&p.mmap, param, |
| 2382 | sizeof(p.mmap))); |
| 2383 | if (err) |
| 2384 | goto bail; |
| 2385 | VERIFY(err, 0 == (err = fastrpc_internal_mmap(fl, &p.mmap))); |
| 2386 | if (err) |
| 2387 | goto bail; |
| 2388 | VERIFY(err, 0 == copy_to_user(param, &p.mmap, sizeof(p.mmap))); |
| 2389 | if (err) |
| 2390 | goto bail; |
| 2391 | break; |
| 2392 | case FASTRPC_IOCTL_MUNMAP: |
| 2393 | VERIFY(err, 0 == copy_from_user(&p.munmap, param, |
| 2394 | sizeof(p.munmap))); |
| 2395 | if (err) |
| 2396 | goto bail; |
| 2397 | VERIFY(err, 0 == (err = fastrpc_internal_munmap(fl, |
| 2398 | &p.munmap))); |
| 2399 | if (err) |
| 2400 | goto bail; |
| 2401 | break; |
| 2402 | case FASTRPC_IOCTL_SETMODE: |
| 2403 | switch ((uint32_t)ioctl_param) { |
| 2404 | case FASTRPC_MODE_PARALLEL: |
| 2405 | case FASTRPC_MODE_SERIAL: |
| 2406 | fl->mode = (uint32_t)ioctl_param; |
| 2407 | break; |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 2408 | case FASTRPC_MODE_PROFILE: |
| 2409 | fl->profile = (uint32_t)ioctl_param; |
| 2410 | break; |
Tharun Kumar Merugu | d4d07948 | 2017-09-06 11:22:19 +0530 | [diff] [blame] | 2411 | case FASTRPC_MODE_SESSION: |
| 2412 | fl->sessionid = 1; |
| 2413 | fl->tgid |= (1 << SESSION_ID_INDEX); |
| 2414 | break; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2415 | default: |
| 2416 | err = -ENOTTY; |
| 2417 | break; |
| 2418 | } |
| 2419 | break; |
Sathish Ambley | a21b5b5 | 2017-01-11 16:11:01 -0800 | [diff] [blame] | 2420 | case FASTRPC_IOCTL_GETPERF: |
| 2421 | VERIFY(err, 0 == copy_from_user(&p.perf, |
| 2422 | param, sizeof(p.perf))); |
| 2423 | if (err) |
| 2424 | goto bail; |
| 2425 | p.perf.numkeys = sizeof(struct fastrpc_perf)/sizeof(int64_t); |
| 2426 | if (p.perf.keys) { |
| 2427 | char *keys = PERF_KEYS; |
| 2428 | |
| 2429 | VERIFY(err, 0 == copy_to_user((char *)p.perf.keys, |
| 2430 | keys, strlen(keys)+1)); |
| 2431 | if (err) |
| 2432 | goto bail; |
| 2433 | } |
| 2434 | if (p.perf.data) { |
| 2435 | VERIFY(err, 0 == copy_to_user((int64_t *)p.perf.data, |
| 2436 | &fl->perf, sizeof(fl->perf))); |
| 2437 | } |
| 2438 | VERIFY(err, 0 == copy_to_user(param, &p.perf, sizeof(p.perf))); |
| 2439 | if (err) |
| 2440 | goto bail; |
| 2441 | break; |
Tharun Kumar Merugu | 5f6ca61c | 2017-08-11 11:43:11 +0530 | [diff] [blame] | 2442 | case FASTRPC_IOCTL_CONTROL: |
| 2443 | VERIFY(err, 0 == copy_from_user(&p.cp, (void __user *)param, |
| 2444 | sizeof(p.cp))); |
| 2445 | if (err) |
| 2446 | goto bail; |
| 2447 | VERIFY(err, 0 == (err = fastrpc_internal_control(fl, &p.cp))); |
| 2448 | if (err) |
| 2449 | goto bail; |
| 2450 | break; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2451 | case FASTRPC_IOCTL_GETINFO: |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2452 | VERIFY(err, 0 == copy_from_user(&info, param, sizeof(info))); |
| 2453 | if (err) |
| 2454 | goto bail; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2455 | VERIFY(err, 0 == (err = fastrpc_get_info(fl, &info))); |
| 2456 | if (err) |
| 2457 | goto bail; |
| 2458 | VERIFY(err, 0 == copy_to_user(param, &info, sizeof(info))); |
| 2459 | if (err) |
| 2460 | goto bail; |
| 2461 | break; |
| 2462 | case FASTRPC_IOCTL_INIT: |
Sathish Ambley | d6300c3 | 2017-01-18 09:50:43 -0800 | [diff] [blame] | 2463 | p.init.attrs = 0; |
| 2464 | p.init.siglen = 0; |
| 2465 | size = sizeof(struct fastrpc_ioctl_init); |
| 2466 | /* fall through */ |
| 2467 | case FASTRPC_IOCTL_INIT_ATTRS: |
| 2468 | if (!size) |
| 2469 | size = sizeof(struct fastrpc_ioctl_init_attrs); |
| 2470 | VERIFY(err, 0 == copy_from_user(&p.init, param, size)); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2471 | if (err) |
| 2472 | goto bail; |
Tharun Kumar Merugu | 4ea0eac | 2017-08-22 11:42:51 +0530 | [diff] [blame] | 2473 | VERIFY(err, p.init.init.filelen >= 0 && |
| 2474 | p.init.init.memlen >= 0); |
| 2475 | if (err) |
| 2476 | goto bail; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2477 | VERIFY(err, 0 == fastrpc_init_process(fl, &p.init)); |
| 2478 | if (err) |
| 2479 | goto bail; |
| 2480 | break; |
| 2481 | |
| 2482 | default: |
| 2483 | err = -ENOTTY; |
| 2484 | pr_info("bad ioctl: %d\n", ioctl_num); |
| 2485 | break; |
| 2486 | } |
| 2487 | bail: |
| 2488 | return err; |
| 2489 | } |
| 2490 | |
| 2491 | static int fastrpc_restart_notifier_cb(struct notifier_block *nb, |
| 2492 | unsigned long code, |
| 2493 | void *data) |
| 2494 | { |
| 2495 | struct fastrpc_apps *me = &gfa; |
| 2496 | struct fastrpc_channel_ctx *ctx; |
| 2497 | int cid; |
| 2498 | |
| 2499 | ctx = container_of(nb, struct fastrpc_channel_ctx, nb); |
| 2500 | cid = ctx - &me->channel[0]; |
| 2501 | if (code == SUBSYS_BEFORE_SHUTDOWN) { |
| 2502 | mutex_lock(&me->smd_mutex); |
| 2503 | ctx->ssrcount++; |
| 2504 | if (ctx->chan) { |
| 2505 | fastrpc_glink_close(ctx->chan, cid); |
| 2506 | ctx->chan = 0; |
| 2507 | pr_info("'restart notifier: closed /dev/%s c %d %d'\n", |
| 2508 | gcinfo[cid].name, MAJOR(me->dev_no), cid); |
| 2509 | } |
| 2510 | mutex_unlock(&me->smd_mutex); |
| 2511 | fastrpc_notify_drivers(me, cid); |
| 2512 | } |
| 2513 | |
| 2514 | return NOTIFY_DONE; |
| 2515 | } |
| 2516 | |
| 2517 | static const struct file_operations fops = { |
| 2518 | .open = fastrpc_device_open, |
| 2519 | .release = fastrpc_device_release, |
| 2520 | .unlocked_ioctl = fastrpc_device_ioctl, |
| 2521 | .compat_ioctl = compat_fastrpc_device_ioctl, |
| 2522 | }; |
| 2523 | |
| 2524 | static const struct of_device_id fastrpc_match_table[] = { |
| 2525 | { .compatible = "qcom,msm-fastrpc-adsp", }, |
| 2526 | { .compatible = "qcom,msm-fastrpc-compute", }, |
| 2527 | { .compatible = "qcom,msm-fastrpc-compute-cb", }, |
| 2528 | { .compatible = "qcom,msm-adsprpc-mem-region", }, |
| 2529 | {} |
| 2530 | }; |
| 2531 | |
| 2532 | static int fastrpc_cb_probe(struct device *dev) |
| 2533 | { |
| 2534 | struct fastrpc_channel_ctx *chan; |
| 2535 | struct fastrpc_session_ctx *sess; |
| 2536 | struct of_phandle_args iommuspec; |
| 2537 | const char *name; |
| 2538 | unsigned int start = 0x80000000; |
| 2539 | int err = 0, i; |
| 2540 | int secure_vmid = VMID_CP_PIXEL; |
| 2541 | |
| 2542 | VERIFY(err, 0 != (name = of_get_property(dev->of_node, "label", NULL))); |
| 2543 | if (err) |
| 2544 | goto bail; |
| 2545 | for (i = 0; i < NUM_CHANNELS; i++) { |
| 2546 | if (!gcinfo[i].name) |
| 2547 | continue; |
| 2548 | if (!strcmp(name, gcinfo[i].name)) |
| 2549 | break; |
| 2550 | } |
| 2551 | VERIFY(err, i < NUM_CHANNELS); |
| 2552 | if (err) |
| 2553 | goto bail; |
| 2554 | chan = &gcinfo[i]; |
| 2555 | VERIFY(err, chan->sesscount < NUM_SESSIONS); |
| 2556 | if (err) |
| 2557 | goto bail; |
| 2558 | |
| 2559 | VERIFY(err, !of_parse_phandle_with_args(dev->of_node, "iommus", |
| 2560 | "#iommu-cells", 0, &iommuspec)); |
| 2561 | if (err) |
| 2562 | goto bail; |
| 2563 | sess = &chan->session[chan->sesscount]; |
| 2564 | sess->smmu.cb = iommuspec.args[0] & 0xf; |
| 2565 | sess->used = 0; |
| 2566 | sess->smmu.coherent = of_property_read_bool(dev->of_node, |
| 2567 | "dma-coherent"); |
| 2568 | sess->smmu.secure = of_property_read_bool(dev->of_node, |
| 2569 | "qcom,secure-context-bank"); |
| 2570 | if (sess->smmu.secure) |
| 2571 | start = 0x60000000; |
| 2572 | VERIFY(err, !IS_ERR_OR_NULL(sess->smmu.mapping = |
| 2573 | arm_iommu_create_mapping(&platform_bus_type, |
Tharun Kumar Merugu | ca183f9 | 2017-04-27 17:43:27 +0530 | [diff] [blame] | 2574 | start, 0x78000000))); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2575 | if (err) |
| 2576 | goto bail; |
| 2577 | |
| 2578 | if (sess->smmu.secure) |
| 2579 | iommu_domain_set_attr(sess->smmu.mapping->domain, |
| 2580 | DOMAIN_ATTR_SECURE_VMID, |
| 2581 | &secure_vmid); |
| 2582 | |
| 2583 | VERIFY(err, !arm_iommu_attach_device(dev, sess->smmu.mapping)); |
| 2584 | if (err) |
| 2585 | goto bail; |
| 2586 | sess->dev = dev; |
| 2587 | sess->smmu.enabled = 1; |
| 2588 | chan->sesscount++; |
Sathish Ambley | 1ca6823 | 2017-01-19 10:32:55 -0800 | [diff] [blame] | 2589 | debugfs_global_file = debugfs_create_file("global", 0644, debugfs_root, |
| 2590 | NULL, &debugfs_fops); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2591 | bail: |
| 2592 | return err; |
| 2593 | } |
| 2594 | |
| 2595 | static int fastrpc_probe(struct platform_device *pdev) |
| 2596 | { |
| 2597 | int err = 0; |
| 2598 | struct fastrpc_apps *me = &gfa; |
| 2599 | struct device *dev = &pdev->dev; |
| 2600 | struct smq_phy_page range; |
| 2601 | struct device_node *ion_node, *node; |
| 2602 | struct platform_device *ion_pdev; |
| 2603 | struct cma *cma; |
| 2604 | uint32_t val; |
| 2605 | |
| 2606 | if (of_device_is_compatible(dev->of_node, |
| 2607 | "qcom,msm-fastrpc-compute-cb")) |
| 2608 | return fastrpc_cb_probe(dev); |
| 2609 | |
| 2610 | if (of_device_is_compatible(dev->of_node, |
| 2611 | "qcom,msm-adsprpc-mem-region")) { |
| 2612 | me->dev = dev; |
| 2613 | range.addr = 0; |
| 2614 | ion_node = of_find_compatible_node(NULL, NULL, "qcom,msm-ion"); |
| 2615 | if (ion_node) { |
| 2616 | for_each_available_child_of_node(ion_node, node) { |
| 2617 | if (of_property_read_u32(node, "reg", &val)) |
| 2618 | continue; |
| 2619 | if (val != ION_ADSP_HEAP_ID) |
| 2620 | continue; |
| 2621 | ion_pdev = of_find_device_by_node(node); |
| 2622 | if (!ion_pdev) |
| 2623 | break; |
| 2624 | cma = dev_get_cma_area(&ion_pdev->dev); |
| 2625 | if (cma) { |
| 2626 | range.addr = cma_get_base(cma); |
| 2627 | range.size = (size_t)cma_get_size(cma); |
| 2628 | } |
| 2629 | break; |
| 2630 | } |
| 2631 | } |
| 2632 | if (range.addr) { |
| 2633 | int srcVM[1] = {VMID_HLOS}; |
| 2634 | int destVM[4] = {VMID_HLOS, VMID_MSS_MSA, VMID_SSC_Q6, |
| 2635 | VMID_ADSP_Q6}; |
Sathish Ambley | 84d1186 | 2017-05-15 14:36:05 -0700 | [diff] [blame] | 2636 | int destVMperm[4] = {PERM_READ | PERM_WRITE | PERM_EXEC, |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2637 | PERM_READ | PERM_WRITE | PERM_EXEC, |
| 2638 | PERM_READ | PERM_WRITE | PERM_EXEC, |
| 2639 | PERM_READ | PERM_WRITE | PERM_EXEC, |
| 2640 | }; |
| 2641 | |
| 2642 | VERIFY(err, !hyp_assign_phys(range.addr, range.size, |
| 2643 | srcVM, 1, destVM, destVMperm, 4)); |
| 2644 | if (err) |
| 2645 | goto bail; |
| 2646 | } |
| 2647 | return 0; |
| 2648 | } |
| 2649 | |
Tharun Kumar Merugu | 5f6ca61c | 2017-08-11 11:43:11 +0530 | [diff] [blame] | 2650 | err = of_property_read_u32(dev->of_node, "qcom,rpc-latency-us", |
| 2651 | &me->latency); |
| 2652 | if (err) |
| 2653 | me->latency = 0; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2654 | VERIFY(err, !of_platform_populate(pdev->dev.of_node, |
| 2655 | fastrpc_match_table, |
| 2656 | NULL, &pdev->dev)); |
| 2657 | if (err) |
| 2658 | goto bail; |
| 2659 | bail: |
| 2660 | return err; |
| 2661 | } |
| 2662 | |
| 2663 | static void fastrpc_deinit(void) |
| 2664 | { |
| 2665 | struct fastrpc_apps *me = &gfa; |
| 2666 | struct fastrpc_channel_ctx *chan = gcinfo; |
| 2667 | int i, j; |
| 2668 | |
| 2669 | for (i = 0; i < NUM_CHANNELS; i++, chan++) { |
| 2670 | if (chan->chan) { |
| 2671 | kref_put_mutex(&chan->kref, |
| 2672 | fastrpc_channel_close, &me->smd_mutex); |
| 2673 | chan->chan = 0; |
| 2674 | } |
| 2675 | for (j = 0; j < NUM_SESSIONS; j++) { |
| 2676 | struct fastrpc_session_ctx *sess = &chan->session[j]; |
| 2677 | |
| 2678 | if (sess->smmu.enabled) { |
| 2679 | arm_iommu_detach_device(sess->dev); |
| 2680 | sess->dev = 0; |
| 2681 | } |
| 2682 | if (sess->smmu.mapping) { |
| 2683 | arm_iommu_release_mapping(sess->smmu.mapping); |
| 2684 | sess->smmu.mapping = 0; |
| 2685 | } |
| 2686 | } |
| 2687 | } |
| 2688 | } |
| 2689 | |
| 2690 | static struct platform_driver fastrpc_driver = { |
| 2691 | .probe = fastrpc_probe, |
| 2692 | .driver = { |
| 2693 | .name = "fastrpc", |
| 2694 | .owner = THIS_MODULE, |
| 2695 | .of_match_table = fastrpc_match_table, |
| 2696 | }, |
| 2697 | }; |
| 2698 | |
| 2699 | static int __init fastrpc_device_init(void) |
| 2700 | { |
| 2701 | struct fastrpc_apps *me = &gfa; |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2702 | struct device *dev = 0; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2703 | int err = 0, i; |
| 2704 | |
| 2705 | memset(me, 0, sizeof(*me)); |
| 2706 | |
| 2707 | fastrpc_init(me); |
| 2708 | me->dev = NULL; |
| 2709 | VERIFY(err, 0 == platform_driver_register(&fastrpc_driver)); |
| 2710 | if (err) |
| 2711 | goto register_bail; |
| 2712 | VERIFY(err, 0 == alloc_chrdev_region(&me->dev_no, 0, NUM_CHANNELS, |
| 2713 | DEVICE_NAME)); |
| 2714 | if (err) |
| 2715 | goto alloc_chrdev_bail; |
| 2716 | cdev_init(&me->cdev, &fops); |
| 2717 | me->cdev.owner = THIS_MODULE; |
| 2718 | VERIFY(err, 0 == cdev_add(&me->cdev, MKDEV(MAJOR(me->dev_no), 0), |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2719 | 1)); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2720 | if (err) |
| 2721 | goto cdev_init_bail; |
| 2722 | me->class = class_create(THIS_MODULE, "fastrpc"); |
| 2723 | VERIFY(err, !IS_ERR(me->class)); |
| 2724 | if (err) |
| 2725 | goto class_create_bail; |
| 2726 | me->compat = (fops.compat_ioctl == NULL) ? 0 : 1; |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2727 | dev = device_create(me->class, NULL, |
| 2728 | MKDEV(MAJOR(me->dev_no), 0), |
| 2729 | NULL, gcinfo[0].name); |
| 2730 | VERIFY(err, !IS_ERR_OR_NULL(dev)); |
| 2731 | if (err) |
| 2732 | goto device_create_bail; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2733 | for (i = 0; i < NUM_CHANNELS; i++) { |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2734 | me->channel[i].dev = dev; |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2735 | me->channel[i].ssrcount = 0; |
| 2736 | me->channel[i].prevssrcount = 0; |
| 2737 | me->channel[i].nb.notifier_call = fastrpc_restart_notifier_cb; |
| 2738 | me->channel[i].handle = subsys_notif_register_notifier( |
| 2739 | gcinfo[i].subsys, |
| 2740 | &me->channel[i].nb); |
| 2741 | } |
| 2742 | |
| 2743 | me->client = msm_ion_client_create(DEVICE_NAME); |
| 2744 | VERIFY(err, !IS_ERR_OR_NULL(me->client)); |
| 2745 | if (err) |
| 2746 | goto device_create_bail; |
Sathish Ambley | 1ca6823 | 2017-01-19 10:32:55 -0800 | [diff] [blame] | 2747 | debugfs_root = debugfs_create_dir("adsprpc", NULL); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2748 | return 0; |
| 2749 | device_create_bail: |
| 2750 | for (i = 0; i < NUM_CHANNELS; i++) { |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2751 | if (me->channel[i].handle) |
| 2752 | subsys_notif_unregister_notifier(me->channel[i].handle, |
| 2753 | &me->channel[i].nb); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2754 | } |
Sathish Ambley | 36849af | 2017-02-02 09:35:55 -0800 | [diff] [blame] | 2755 | if (!IS_ERR_OR_NULL(dev)) |
| 2756 | device_destroy(me->class, MKDEV(MAJOR(me->dev_no), 0)); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2757 | class_destroy(me->class); |
| 2758 | class_create_bail: |
| 2759 | cdev_del(&me->cdev); |
| 2760 | cdev_init_bail: |
| 2761 | unregister_chrdev_region(me->dev_no, NUM_CHANNELS); |
| 2762 | alloc_chrdev_bail: |
| 2763 | register_bail: |
| 2764 | fastrpc_deinit(); |
| 2765 | return err; |
| 2766 | } |
| 2767 | |
| 2768 | static void __exit fastrpc_device_exit(void) |
| 2769 | { |
| 2770 | struct fastrpc_apps *me = &gfa; |
| 2771 | int i; |
| 2772 | |
| 2773 | fastrpc_file_list_dtor(me); |
| 2774 | fastrpc_deinit(); |
| 2775 | for (i = 0; i < NUM_CHANNELS; i++) { |
| 2776 | if (!gcinfo[i].name) |
| 2777 | continue; |
| 2778 | device_destroy(me->class, MKDEV(MAJOR(me->dev_no), i)); |
| 2779 | subsys_notif_unregister_notifier(me->channel[i].handle, |
| 2780 | &me->channel[i].nb); |
| 2781 | } |
| 2782 | class_destroy(me->class); |
| 2783 | cdev_del(&me->cdev); |
| 2784 | unregister_chrdev_region(me->dev_no, NUM_CHANNELS); |
| 2785 | ion_client_destroy(me->client); |
Sathish Ambley | 1ca6823 | 2017-01-19 10:32:55 -0800 | [diff] [blame] | 2786 | debugfs_remove_recursive(debugfs_root); |
Sathish Ambley | 69e1ab0 | 2016-10-18 10:28:15 -0700 | [diff] [blame] | 2787 | } |
| 2788 | |
| 2789 | late_initcall(fastrpc_device_init); |
| 2790 | module_exit(fastrpc_device_exit); |
| 2791 | |
| 2792 | MODULE_LICENSE("GPL v2"); |