1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2011-2018, The Linux Foundation. All rights reserved.
3 // Copyright (c) 2018, Linaro Limited
5 #include <linux/completion.h>
6 #include <linux/device.h>
7 #include <linux/dma-buf.h>
8 #include <linux/dma-mapping.h>
9 #include <linux/dma-resv.h>
10 #include <linux/idr.h>
11 #include <linux/list.h>
12 #include <linux/miscdevice.h>
13 #include <linux/module.h>
14 #include <linux/of_address.h>
16 #include <linux/platform_device.h>
17 #include <linux/sort.h>
18 #include <linux/of_platform.h>
19 #include <linux/rpmsg.h>
20 #include <linux/scatterlist.h>
21 #include <linux/slab.h>
22 #include <linux/firmware/qcom/qcom_scm.h>
23 #include <uapi/misc/fastrpc.h>
24 #include <linux/of_reserved_mem.h>
26 #define ADSP_DOMAIN_ID (0)
27 #define MDSP_DOMAIN_ID (1)
28 #define SDSP_DOMAIN_ID (2)
29 #define CDSP_DOMAIN_ID (3)
30 #define FASTRPC_DEV_MAX 4 /* adsp, mdsp, slpi, cdsp*/
31 #define FASTRPC_MAX_SESSIONS 14
32 #define FASTRPC_MAX_VMIDS 16
33 #define FASTRPC_ALIGN 128
34 #define FASTRPC_MAX_FDLIST 16
35 #define FASTRPC_MAX_CRCLIST 64
36 #define FASTRPC_PHYS(p) ((p) & 0xffffffff)
37 #define FASTRPC_CTX_MAX (256)
38 #define FASTRPC_INIT_HANDLE 1
39 #define FASTRPC_DSP_UTILITIES_HANDLE 2
40 #define FASTRPC_CTXID_MASK (0xFF0)
41 #define INIT_FILELEN_MAX (2 * 1024 * 1024)
42 #define INIT_FILE_NAMELEN_MAX (128)
43 #define FASTRPC_DEVICE_NAME "fastrpc"
45 /* Add memory to static PD pool, protection thru XPU */
46 #define ADSP_MMAP_HEAP_ADDR 4
47 /* MAP static DMA buffer on DSP User PD */
48 #define ADSP_MMAP_DMA_BUFFER 6
49 /* Add memory to static PD pool protection thru hypervisor */
50 #define ADSP_MMAP_REMOTE_HEAP_ADDR 8
51 /* Add memory to userPD pool, for user heap */
52 #define ADSP_MMAP_ADD_PAGES 0x1000
53 /* Add memory to userPD pool, for LLC heap */
54 #define ADSP_MMAP_ADD_PAGES_LLC 0x3000,
56 #define DSP_UNSUPPORTED_API (0x80000414)
57 /* MAX NUMBER of DSP ATTRIBUTES SUPPORTED */
58 #define FASTRPC_MAX_DSP_ATTRIBUTES (256)
59 #define FASTRPC_MAX_DSP_ATTRIBUTES_LEN (sizeof(u32) * FASTRPC_MAX_DSP_ATTRIBUTES)
61 /* Retrives number of input buffers from the scalars parameter */
62 #define REMOTE_SCALARS_INBUFS(sc) (((sc) >> 16) & 0x0ff)
64 /* Retrives number of output buffers from the scalars parameter */
65 #define REMOTE_SCALARS_OUTBUFS(sc) (((sc) >> 8) & 0x0ff)
67 /* Retrives number of input handles from the scalars parameter */
68 #define REMOTE_SCALARS_INHANDLES(sc) (((sc) >> 4) & 0x0f)
70 /* Retrives number of output handles from the scalars parameter */
71 #define REMOTE_SCALARS_OUTHANDLES(sc) ((sc) & 0x0f)
73 #define REMOTE_SCALARS_LENGTH(sc) (REMOTE_SCALARS_INBUFS(sc) + \
74 REMOTE_SCALARS_OUTBUFS(sc) + \
75 REMOTE_SCALARS_INHANDLES(sc)+ \
76 REMOTE_SCALARS_OUTHANDLES(sc))
77 #define FASTRPC_BUILD_SCALARS(attr, method, in, out, oin, oout) \
78 (((attr & 0x07) << 29) | \
79 ((method & 0x1f) << 24) | \
80 ((in & 0xff) << 16) | \
81 ((out & 0xff) << 8) | \
82 ((oin & 0x0f) << 4) | \
85 #define FASTRPC_SCALARS(method, in, out) \
86 FASTRPC_BUILD_SCALARS(0, method, in, out, 0, 0)
88 #define FASTRPC_CREATE_PROCESS_NARGS 6
89 #define FASTRPC_CREATE_STATIC_PROCESS_NARGS 3
90 /* Remote Method id table */
91 #define FASTRPC_RMID_INIT_ATTACH 0
92 #define FASTRPC_RMID_INIT_RELEASE 1
93 #define FASTRPC_RMID_INIT_MMAP 4
94 #define FASTRPC_RMID_INIT_MUNMAP 5
95 #define FASTRPC_RMID_INIT_CREATE 6
96 #define FASTRPC_RMID_INIT_CREATE_ATTR 7
97 #define FASTRPC_RMID_INIT_CREATE_STATIC 8
98 #define FASTRPC_RMID_INIT_MEM_MAP 10
99 #define FASTRPC_RMID_INIT_MEM_UNMAP 11
101 /* Protection Domain(PD) ids */
104 #define SENSORS_PD (2)
106 #define miscdev_to_fdevice(d) container_of(d, struct fastrpc_device, miscdev)
108 static const char *domains[FASTRPC_DEV_MAX] = { "adsp", "mdsp",
110 struct fastrpc_phy_page {
111 u64 addr; /* physical address */
112 u64 size; /* size of contiguous region */
115 struct fastrpc_invoke_buf {
116 u32 num; /* number of contiguous regions */
117 u32 pgidx; /* index to start of contiguous region */
120 struct fastrpc_remote_dmahandle {
121 s32 fd; /* dma handle fd */
122 u32 offset; /* dma handle offset */
123 u32 len; /* dma handle length */
126 struct fastrpc_remote_buf {
127 u64 pv; /* buffer pointer */
128 u64 len; /* length of buffer */
131 union fastrpc_remote_arg {
132 struct fastrpc_remote_buf buf;
133 struct fastrpc_remote_dmahandle dma;
136 struct fastrpc_mmap_rsp_msg {
140 struct fastrpc_mmap_req_msg {
147 struct fastrpc_mem_map_req_msg {
157 struct fastrpc_munmap_req_msg {
163 struct fastrpc_mem_unmap_req_msg {
171 int pid; /* process group id */
172 int tid; /* thread id */
173 u64 ctx; /* invoke caller context */
174 u32 handle; /* handle to invoke */
175 u32 sc; /* scalars structure describing the data */
176 u64 addr; /* physical address */
177 u64 size; /* size of contiguous region */
180 struct fastrpc_invoke_rsp {
181 u64 ctx; /* invoke caller context */
182 int retval; /* invoke return value */
185 struct fastrpc_buf_overlap {
195 struct fastrpc_user *fl;
196 struct dma_buf *dmabuf;
201 /* Lock for dma buf attachments */
203 struct list_head attachments;
205 struct list_head node; /* list of user requested mmaps */
209 struct fastrpc_dma_buf_attachment {
212 struct list_head node;
216 struct list_head node;
217 struct fastrpc_user *fl;
220 struct sg_table *table;
221 struct dma_buf_attachment *attach;
228 struct kref refcount;
231 struct fastrpc_invoke_ctx {
241 struct kref refcount;
242 struct list_head node; /* list of ctxs */
243 struct completion work;
244 struct work_struct put_work;
245 struct fastrpc_msg msg;
246 struct fastrpc_user *fl;
247 union fastrpc_remote_arg *rpra;
248 struct fastrpc_map **maps;
249 struct fastrpc_buf *buf;
250 struct fastrpc_invoke_args *args;
251 struct fastrpc_buf_overlap *olaps;
252 struct fastrpc_channel_ctx *cctx;
255 struct fastrpc_session_ctx {
262 struct fastrpc_channel_ctx {
266 struct qcom_scm_vmperm vmperms[FASTRPC_MAX_VMIDS];
267 struct rpmsg_device *rpdev;
268 struct fastrpc_session_ctx session[FASTRPC_MAX_SESSIONS];
271 struct list_head users;
272 struct kref refcount;
273 /* Flag if dsp attributes are cached */
274 bool valid_attributes;
275 u32 dsp_attributes[FASTRPC_MAX_DSP_ATTRIBUTES];
276 struct fastrpc_device *secure_fdevice;
277 struct fastrpc_device *fdevice;
278 struct fastrpc_buf *remote_heap;
279 struct list_head invoke_interrupted_mmaps;
281 bool unsigned_support;
285 struct fastrpc_device {
286 struct fastrpc_channel_ctx *cctx;
287 struct miscdevice miscdev;
291 struct fastrpc_user {
292 struct list_head user;
293 struct list_head maps;
294 struct list_head pending;
295 struct list_head mmaps;
297 struct fastrpc_channel_ctx *cctx;
298 struct fastrpc_session_ctx *sctx;
299 struct fastrpc_buf *init_mem;
306 /* lock for allocations */
310 static void fastrpc_free_map(struct kref *ref)
312 struct fastrpc_map *map;
314 map = container_of(ref, struct fastrpc_map, refcount);
317 if (map->attr & FASTRPC_ATTR_SECUREMAP) {
318 struct qcom_scm_vmperm perm;
319 int vmid = map->fl->cctx->vmperms[0].vmid;
320 u64 src_perms = BIT(QCOM_SCM_VMID_HLOS) | BIT(vmid);
323 perm.vmid = QCOM_SCM_VMID_HLOS;
324 perm.perm = QCOM_SCM_PERM_RWX;
325 err = qcom_scm_assign_mem(map->phys, map->size,
326 &src_perms, &perm, 1);
328 dev_err(map->fl->sctx->dev, "Failed to assign memory phys 0x%llx size 0x%llx err %d",
329 map->phys, map->size, err);
333 dma_buf_unmap_attachment_unlocked(map->attach, map->table,
335 dma_buf_detach(map->buf, map->attach);
336 dma_buf_put(map->buf);
340 spin_lock(&map->fl->lock);
341 list_del(&map->node);
342 spin_unlock(&map->fl->lock);
349 static void fastrpc_map_put(struct fastrpc_map *map)
352 kref_put(&map->refcount, fastrpc_free_map);
355 static int fastrpc_map_get(struct fastrpc_map *map)
360 return kref_get_unless_zero(&map->refcount) ? 0 : -ENOENT;
364 static int fastrpc_map_lookup(struct fastrpc_user *fl, int fd,
365 struct fastrpc_map **ppmap, bool take_ref)
367 struct fastrpc_session_ctx *sess = fl->sctx;
368 struct fastrpc_map *map = NULL;
371 spin_lock(&fl->lock);
372 list_for_each_entry(map, &fl->maps, node) {
377 ret = fastrpc_map_get(map);
379 dev_dbg(sess->dev, "%s: Failed to get map fd=%d ret=%d\n",
389 spin_unlock(&fl->lock);
394 static void fastrpc_buf_free(struct fastrpc_buf *buf)
396 dma_free_coherent(buf->dev, buf->size, buf->virt,
397 FASTRPC_PHYS(buf->phys));
401 static int __fastrpc_buf_alloc(struct fastrpc_user *fl, struct device *dev,
402 u64 size, struct fastrpc_buf **obuf)
404 struct fastrpc_buf *buf;
406 buf = kzalloc(sizeof(*buf), GFP_KERNEL);
410 INIT_LIST_HEAD(&buf->attachments);
411 INIT_LIST_HEAD(&buf->node);
412 mutex_init(&buf->lock);
421 buf->virt = dma_alloc_coherent(dev, buf->size, (dma_addr_t *)&buf->phys,
424 mutex_destroy(&buf->lock);
434 static int fastrpc_buf_alloc(struct fastrpc_user *fl, struct device *dev,
435 u64 size, struct fastrpc_buf **obuf)
438 struct fastrpc_buf *buf;
440 ret = __fastrpc_buf_alloc(fl, dev, size, obuf);
446 if (fl->sctx && fl->sctx->sid)
447 buf->phys += ((u64)fl->sctx->sid << 32);
452 static int fastrpc_remote_heap_alloc(struct fastrpc_user *fl, struct device *dev,
453 u64 size, struct fastrpc_buf **obuf)
455 struct device *rdev = &fl->cctx->rpdev->dev;
457 return __fastrpc_buf_alloc(fl, rdev, size, obuf);
460 static void fastrpc_channel_ctx_free(struct kref *ref)
462 struct fastrpc_channel_ctx *cctx;
464 cctx = container_of(ref, struct fastrpc_channel_ctx, refcount);
469 static void fastrpc_channel_ctx_get(struct fastrpc_channel_ctx *cctx)
471 kref_get(&cctx->refcount);
474 static void fastrpc_channel_ctx_put(struct fastrpc_channel_ctx *cctx)
476 kref_put(&cctx->refcount, fastrpc_channel_ctx_free);
479 static void fastrpc_context_free(struct kref *ref)
481 struct fastrpc_invoke_ctx *ctx;
482 struct fastrpc_channel_ctx *cctx;
486 ctx = container_of(ref, struct fastrpc_invoke_ctx, refcount);
489 for (i = 0; i < ctx->nbufs; i++)
490 fastrpc_map_put(ctx->maps[i]);
493 fastrpc_buf_free(ctx->buf);
495 spin_lock_irqsave(&cctx->lock, flags);
496 idr_remove(&cctx->ctx_idr, ctx->ctxid >> 4);
497 spin_unlock_irqrestore(&cctx->lock, flags);
503 fastrpc_channel_ctx_put(cctx);
506 static void fastrpc_context_get(struct fastrpc_invoke_ctx *ctx)
508 kref_get(&ctx->refcount);
511 static void fastrpc_context_put(struct fastrpc_invoke_ctx *ctx)
513 kref_put(&ctx->refcount, fastrpc_context_free);
516 static void fastrpc_context_put_wq(struct work_struct *work)
518 struct fastrpc_invoke_ctx *ctx =
519 container_of(work, struct fastrpc_invoke_ctx, put_work);
521 fastrpc_context_put(ctx);
524 #define CMP(aa, bb) ((aa) == (bb) ? 0 : (aa) < (bb) ? -1 : 1)
525 static int olaps_cmp(const void *a, const void *b)
527 struct fastrpc_buf_overlap *pa = (struct fastrpc_buf_overlap *)a;
528 struct fastrpc_buf_overlap *pb = (struct fastrpc_buf_overlap *)b;
529 /* sort with lowest starting buffer first */
530 int st = CMP(pa->start, pb->start);
531 /* sort with highest ending buffer first */
532 int ed = CMP(pb->end, pa->end);
534 return st == 0 ? ed : st;
537 static void fastrpc_get_buff_overlaps(struct fastrpc_invoke_ctx *ctx)
542 for (i = 0; i < ctx->nbufs; ++i) {
543 ctx->olaps[i].start = ctx->args[i].ptr;
544 ctx->olaps[i].end = ctx->olaps[i].start + ctx->args[i].length;
545 ctx->olaps[i].raix = i;
548 sort(ctx->olaps, ctx->nbufs, sizeof(*ctx->olaps), olaps_cmp, NULL);
550 for (i = 0; i < ctx->nbufs; ++i) {
551 /* Falling inside previous range */
552 if (ctx->olaps[i].start < max_end) {
553 ctx->olaps[i].mstart = max_end;
554 ctx->olaps[i].mend = ctx->olaps[i].end;
555 ctx->olaps[i].offset = max_end - ctx->olaps[i].start;
557 if (ctx->olaps[i].end > max_end) {
558 max_end = ctx->olaps[i].end;
560 ctx->olaps[i].mend = 0;
561 ctx->olaps[i].mstart = 0;
565 ctx->olaps[i].mend = ctx->olaps[i].end;
566 ctx->olaps[i].mstart = ctx->olaps[i].start;
567 ctx->olaps[i].offset = 0;
568 max_end = ctx->olaps[i].end;
573 static struct fastrpc_invoke_ctx *fastrpc_context_alloc(
574 struct fastrpc_user *user, u32 kernel, u32 sc,
575 struct fastrpc_invoke_args *args)
577 struct fastrpc_channel_ctx *cctx = user->cctx;
578 struct fastrpc_invoke_ctx *ctx = NULL;
582 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
584 return ERR_PTR(-ENOMEM);
586 INIT_LIST_HEAD(&ctx->node);
588 ctx->nscalars = REMOTE_SCALARS_LENGTH(sc);
589 ctx->nbufs = REMOTE_SCALARS_INBUFS(sc) +
590 REMOTE_SCALARS_OUTBUFS(sc);
593 ctx->maps = kcalloc(ctx->nscalars,
594 sizeof(*ctx->maps), GFP_KERNEL);
597 return ERR_PTR(-ENOMEM);
599 ctx->olaps = kcalloc(ctx->nscalars,
600 sizeof(*ctx->olaps), GFP_KERNEL);
604 return ERR_PTR(-ENOMEM);
607 fastrpc_get_buff_overlaps(ctx);
610 /* Released in fastrpc_context_put() */
611 fastrpc_channel_ctx_get(cctx);
615 ctx->pid = current->pid;
616 ctx->tgid = user->tgid;
618 init_completion(&ctx->work);
619 INIT_WORK(&ctx->put_work, fastrpc_context_put_wq);
621 spin_lock(&user->lock);
622 list_add_tail(&ctx->node, &user->pending);
623 spin_unlock(&user->lock);
625 spin_lock_irqsave(&cctx->lock, flags);
626 ret = idr_alloc_cyclic(&cctx->ctx_idr, ctx, 1,
627 FASTRPC_CTX_MAX, GFP_ATOMIC);
629 spin_unlock_irqrestore(&cctx->lock, flags);
632 ctx->ctxid = ret << 4;
633 spin_unlock_irqrestore(&cctx->lock, flags);
635 kref_init(&ctx->refcount);
639 spin_lock(&user->lock);
640 list_del(&ctx->node);
641 spin_unlock(&user->lock);
642 fastrpc_channel_ctx_put(cctx);
650 static struct sg_table *
651 fastrpc_map_dma_buf(struct dma_buf_attachment *attachment,
652 enum dma_data_direction dir)
654 struct fastrpc_dma_buf_attachment *a = attachment->priv;
655 struct sg_table *table;
660 ret = dma_map_sgtable(attachment->dev, table, dir, 0);
662 table = ERR_PTR(ret);
666 static void fastrpc_unmap_dma_buf(struct dma_buf_attachment *attach,
667 struct sg_table *table,
668 enum dma_data_direction dir)
670 dma_unmap_sgtable(attach->dev, table, dir, 0);
673 static void fastrpc_release(struct dma_buf *dmabuf)
675 struct fastrpc_buf *buffer = dmabuf->priv;
677 fastrpc_buf_free(buffer);
680 static int fastrpc_dma_buf_attach(struct dma_buf *dmabuf,
681 struct dma_buf_attachment *attachment)
683 struct fastrpc_dma_buf_attachment *a;
684 struct fastrpc_buf *buffer = dmabuf->priv;
687 a = kzalloc(sizeof(*a), GFP_KERNEL);
691 ret = dma_get_sgtable(buffer->dev, &a->sgt, buffer->virt,
692 FASTRPC_PHYS(buffer->phys), buffer->size);
694 dev_err(buffer->dev, "failed to get scatterlist from DMA API\n");
699 a->dev = attachment->dev;
700 INIT_LIST_HEAD(&a->node);
701 attachment->priv = a;
703 mutex_lock(&buffer->lock);
704 list_add(&a->node, &buffer->attachments);
705 mutex_unlock(&buffer->lock);
710 static void fastrpc_dma_buf_detatch(struct dma_buf *dmabuf,
711 struct dma_buf_attachment *attachment)
713 struct fastrpc_dma_buf_attachment *a = attachment->priv;
714 struct fastrpc_buf *buffer = dmabuf->priv;
716 mutex_lock(&buffer->lock);
718 mutex_unlock(&buffer->lock);
719 sg_free_table(&a->sgt);
723 static int fastrpc_vmap(struct dma_buf *dmabuf, struct iosys_map *map)
725 struct fastrpc_buf *buf = dmabuf->priv;
727 iosys_map_set_vaddr(map, buf->virt);
732 static int fastrpc_mmap(struct dma_buf *dmabuf,
733 struct vm_area_struct *vma)
735 struct fastrpc_buf *buf = dmabuf->priv;
736 size_t size = vma->vm_end - vma->vm_start;
738 dma_resv_assert_held(dmabuf->resv);
740 return dma_mmap_coherent(buf->dev, vma, buf->virt,
741 FASTRPC_PHYS(buf->phys), size);
744 static const struct dma_buf_ops fastrpc_dma_buf_ops = {
745 .attach = fastrpc_dma_buf_attach,
746 .detach = fastrpc_dma_buf_detatch,
747 .map_dma_buf = fastrpc_map_dma_buf,
748 .unmap_dma_buf = fastrpc_unmap_dma_buf,
749 .mmap = fastrpc_mmap,
750 .vmap = fastrpc_vmap,
751 .release = fastrpc_release,
754 static int fastrpc_map_create(struct fastrpc_user *fl, int fd,
755 u64 len, u32 attr, struct fastrpc_map **ppmap)
757 struct fastrpc_session_ctx *sess = fl->sctx;
758 struct fastrpc_map *map = NULL;
759 struct sg_table *table;
762 if (!fastrpc_map_lookup(fl, fd, ppmap, true))
765 map = kzalloc(sizeof(*map), GFP_KERNEL);
769 INIT_LIST_HEAD(&map->node);
770 kref_init(&map->refcount);
774 map->buf = dma_buf_get(fd);
775 if (IS_ERR(map->buf)) {
776 err = PTR_ERR(map->buf);
780 map->attach = dma_buf_attach(map->buf, sess->dev);
781 if (IS_ERR(map->attach)) {
782 dev_err(sess->dev, "Failed to attach dmabuf\n");
783 err = PTR_ERR(map->attach);
787 table = dma_buf_map_attachment_unlocked(map->attach, DMA_BIDIRECTIONAL);
789 err = PTR_ERR(table);
794 if (attr & FASTRPC_ATTR_SECUREMAP) {
795 map->phys = sg_phys(map->table->sgl);
797 map->phys = sg_dma_address(map->table->sgl);
798 map->phys += ((u64)fl->sctx->sid << 32);
801 map->va = sg_virt(map->table->sgl);
804 if (attr & FASTRPC_ATTR_SECUREMAP) {
806 * If subsystem VMIDs are defined in DTSI, then do
807 * hyp_assign from HLOS to those VM(s)
809 u64 src_perms = BIT(QCOM_SCM_VMID_HLOS);
810 struct qcom_scm_vmperm dst_perms[2] = {0};
812 dst_perms[0].vmid = QCOM_SCM_VMID_HLOS;
813 dst_perms[0].perm = QCOM_SCM_PERM_RW;
814 dst_perms[1].vmid = fl->cctx->vmperms[0].vmid;
815 dst_perms[1].perm = QCOM_SCM_PERM_RWX;
817 err = qcom_scm_assign_mem(map->phys, (u64)map->size, &src_perms, dst_perms, 2);
819 dev_err(sess->dev, "Failed to assign memory with phys 0x%llx size 0x%llx err %d",
820 map->phys, map->size, err);
824 spin_lock(&fl->lock);
825 list_add_tail(&map->node, &fl->maps);
826 spin_unlock(&fl->lock);
832 dma_buf_detach(map->buf, map->attach);
834 dma_buf_put(map->buf);
836 fastrpc_map_put(map);
842 * Fastrpc payload buffer with metadata looks like:
844 * >>>>>> START of METADATA <<<<<<<<<
845 * +---------------------------------+
847 * | type:(union fastrpc_remote_arg)|
849 * +---------------------------------+
850 * | Invoke Buffer list |
851 * | type:(struct fastrpc_invoke_buf)|
853 * +---------------------------------+
855 * | type:(struct fastrpc_phy_page) |
857 * +---------------------------------+
859 * |(can be specific to SoC/Firmware)|
860 * +---------------------------------+
861 * >>>>>>>> END of METADATA <<<<<<<<<
862 * +---------------------------------+
865 * +---------------------------------+
868 static int fastrpc_get_meta_size(struct fastrpc_invoke_ctx *ctx)
872 size = (sizeof(struct fastrpc_remote_buf) +
873 sizeof(struct fastrpc_invoke_buf) +
874 sizeof(struct fastrpc_phy_page)) * ctx->nscalars +
875 sizeof(u64) * FASTRPC_MAX_FDLIST +
876 sizeof(u32) * FASTRPC_MAX_CRCLIST;
881 static u64 fastrpc_get_payload_size(struct fastrpc_invoke_ctx *ctx, int metalen)
886 size = ALIGN(metalen, FASTRPC_ALIGN);
887 for (oix = 0; oix < ctx->nbufs; oix++) {
888 int i = ctx->olaps[oix].raix;
890 if (ctx->args[i].fd == 0 || ctx->args[i].fd == -1) {
892 if (ctx->olaps[oix].offset == 0)
893 size = ALIGN(size, FASTRPC_ALIGN);
895 size += (ctx->olaps[oix].mend - ctx->olaps[oix].mstart);
902 static int fastrpc_create_maps(struct fastrpc_invoke_ctx *ctx)
904 struct device *dev = ctx->fl->sctx->dev;
907 for (i = 0; i < ctx->nscalars; ++i) {
909 if (ctx->args[i].fd == 0 || ctx->args[i].fd == -1 ||
910 ctx->args[i].length == 0)
913 err = fastrpc_map_create(ctx->fl, ctx->args[i].fd,
914 ctx->args[i].length, ctx->args[i].attr, &ctx->maps[i]);
916 dev_err(dev, "Error Creating map %d\n", err);
924 static struct fastrpc_invoke_buf *fastrpc_invoke_buf_start(union fastrpc_remote_arg *pra, int len)
926 return (struct fastrpc_invoke_buf *)(&pra[len]);
929 static struct fastrpc_phy_page *fastrpc_phy_page_start(struct fastrpc_invoke_buf *buf, int len)
931 return (struct fastrpc_phy_page *)(&buf[len]);
934 static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
936 struct device *dev = ctx->fl->sctx->dev;
937 union fastrpc_remote_arg *rpra;
938 struct fastrpc_invoke_buf *list;
939 struct fastrpc_phy_page *pages;
940 int inbufs, i, oix, err = 0;
941 u64 len, rlen, pkt_size;
942 u64 pg_start, pg_end;
946 inbufs = REMOTE_SCALARS_INBUFS(ctx->sc);
947 metalen = fastrpc_get_meta_size(ctx);
948 pkt_size = fastrpc_get_payload_size(ctx, metalen);
950 err = fastrpc_create_maps(ctx);
954 ctx->msg_sz = pkt_size;
956 err = fastrpc_buf_alloc(ctx->fl, dev, pkt_size, &ctx->buf);
960 memset(ctx->buf->virt, 0, pkt_size);
961 rpra = ctx->buf->virt;
962 list = fastrpc_invoke_buf_start(rpra, ctx->nscalars);
963 pages = fastrpc_phy_page_start(list, ctx->nscalars);
964 args = (uintptr_t)ctx->buf->virt + metalen;
965 rlen = pkt_size - metalen;
968 for (oix = 0; oix < ctx->nbufs; ++oix) {
971 i = ctx->olaps[oix].raix;
972 len = ctx->args[i].length;
975 rpra[i].buf.len = len;
976 list[i].num = len ? 1 : 0;
983 struct vm_area_struct *vma = NULL;
985 rpra[i].buf.pv = (u64) ctx->args[i].ptr;
986 pages[i].addr = ctx->maps[i]->phys;
988 mmap_read_lock(current->mm);
989 vma = find_vma(current->mm, ctx->args[i].ptr);
991 pages[i].addr += ctx->args[i].ptr -
993 mmap_read_unlock(current->mm);
995 pg_start = (ctx->args[i].ptr & PAGE_MASK) >> PAGE_SHIFT;
996 pg_end = ((ctx->args[i].ptr + len - 1) & PAGE_MASK) >>
998 pages[i].size = (pg_end - pg_start + 1) * PAGE_SIZE;
1002 if (ctx->olaps[oix].offset == 0) {
1003 rlen -= ALIGN(args, FASTRPC_ALIGN) - args;
1004 args = ALIGN(args, FASTRPC_ALIGN);
1007 mlen = ctx->olaps[oix].mend - ctx->olaps[oix].mstart;
1012 rpra[i].buf.pv = args - ctx->olaps[oix].offset;
1013 pages[i].addr = ctx->buf->phys -
1014 ctx->olaps[oix].offset +
1016 pages[i].addr = pages[i].addr & PAGE_MASK;
1018 pg_start = (args & PAGE_MASK) >> PAGE_SHIFT;
1019 pg_end = ((args + len - 1) & PAGE_MASK) >> PAGE_SHIFT;
1020 pages[i].size = (pg_end - pg_start + 1) * PAGE_SIZE;
1025 if (i < inbufs && !ctx->maps[i]) {
1026 void *dst = (void *)(uintptr_t)rpra[i].buf.pv;
1027 void *src = (void *)(uintptr_t)ctx->args[i].ptr;
1030 if (copy_from_user(dst, (void __user *)src,
1036 memcpy(dst, src, len);
1041 for (i = ctx->nbufs; i < ctx->nscalars; ++i) {
1042 list[i].num = ctx->args[i].length ? 1 : 0;
1045 pages[i].addr = ctx->maps[i]->phys;
1046 pages[i].size = ctx->maps[i]->size;
1048 rpra[i].dma.fd = ctx->args[i].fd;
1049 rpra[i].dma.len = ctx->args[i].length;
1050 rpra[i].dma.offset = (u64) ctx->args[i].ptr;
1055 dev_err(dev, "Error: get invoke args failed:%d\n", err);
1060 static int fastrpc_put_args(struct fastrpc_invoke_ctx *ctx,
1063 union fastrpc_remote_arg *rpra = ctx->rpra;
1064 struct fastrpc_user *fl = ctx->fl;
1065 struct fastrpc_map *mmap = NULL;
1066 struct fastrpc_invoke_buf *list;
1067 struct fastrpc_phy_page *pages;
1069 int i, inbufs, outbufs, handles;
1071 inbufs = REMOTE_SCALARS_INBUFS(ctx->sc);
1072 outbufs = REMOTE_SCALARS_OUTBUFS(ctx->sc);
1073 handles = REMOTE_SCALARS_INHANDLES(ctx->sc) + REMOTE_SCALARS_OUTHANDLES(ctx->sc);
1074 list = fastrpc_invoke_buf_start(rpra, ctx->nscalars);
1075 pages = fastrpc_phy_page_start(list, ctx->nscalars);
1076 fdlist = (uint64_t *)(pages + inbufs + outbufs + handles);
1078 for (i = inbufs; i < ctx->nbufs; ++i) {
1079 if (!ctx->maps[i]) {
1080 void *src = (void *)(uintptr_t)rpra[i].buf.pv;
1081 void *dst = (void *)(uintptr_t)ctx->args[i].ptr;
1082 u64 len = rpra[i].buf.len;
1085 if (copy_to_user((void __user *)dst, src, len))
1088 memcpy(dst, src, len);
1093 /* Clean up fdlist which is updated by DSP */
1094 for (i = 0; i < FASTRPC_MAX_FDLIST; i++) {
1097 if (!fastrpc_map_lookup(fl, (int)fdlist[i], &mmap, false))
1098 fastrpc_map_put(mmap);
1104 static int fastrpc_invoke_send(struct fastrpc_session_ctx *sctx,
1105 struct fastrpc_invoke_ctx *ctx,
1106 u32 kernel, uint32_t handle)
1108 struct fastrpc_channel_ctx *cctx;
1109 struct fastrpc_user *fl = ctx->fl;
1110 struct fastrpc_msg *msg = &ctx->msg;
1114 msg->pid = fl->tgid;
1115 msg->tid = current->pid;
1120 msg->ctx = ctx->ctxid | fl->pd;
1121 msg->handle = handle;
1123 msg->addr = ctx->buf ? ctx->buf->phys : 0;
1124 msg->size = roundup(ctx->msg_sz, PAGE_SIZE);
1125 fastrpc_context_get(ctx);
1127 ret = rpmsg_send(cctx->rpdev->ept, (void *)msg, sizeof(*msg));
1130 fastrpc_context_put(ctx);
1136 static int fastrpc_internal_invoke(struct fastrpc_user *fl, u32 kernel,
1138 struct fastrpc_invoke_args *args)
1140 struct fastrpc_invoke_ctx *ctx = NULL;
1141 struct fastrpc_buf *buf, *b;
1148 if (!fl->cctx->rpdev)
1151 if (handle == FASTRPC_INIT_HANDLE && !kernel) {
1152 dev_warn_ratelimited(fl->sctx->dev, "user app trying to send a kernel RPC message (%d)\n", handle);
1156 ctx = fastrpc_context_alloc(fl, kernel, sc, args);
1158 return PTR_ERR(ctx);
1160 err = fastrpc_get_args(kernel, ctx);
1164 /* make sure that all CPU memory writes are seen by DSP */
1166 /* Send invoke buffer to remote dsp */
1167 err = fastrpc_invoke_send(fl->sctx, ctx, kernel, handle);
1172 if (!wait_for_completion_timeout(&ctx->work, 10 * HZ))
1175 err = wait_for_completion_interruptible(&ctx->work);
1181 /* make sure that all memory writes by DSP are seen by CPU */
1183 /* populate all the output buffers with results */
1184 err = fastrpc_put_args(ctx, kernel);
1188 /* Check the response from remote dsp */
1194 if (err != -ERESTARTSYS && err != -ETIMEDOUT) {
1195 /* We are done with this compute context */
1196 spin_lock(&fl->lock);
1197 list_del(&ctx->node);
1198 spin_unlock(&fl->lock);
1199 fastrpc_context_put(ctx);
1202 if (err == -ERESTARTSYS) {
1203 list_for_each_entry_safe(buf, b, &fl->mmaps, node) {
1204 list_del(&buf->node);
1205 list_add_tail(&buf->node, &fl->cctx->invoke_interrupted_mmaps);
1210 dev_dbg(fl->sctx->dev, "Error: Invoke Failed %d\n", err);
1215 static bool is_session_rejected(struct fastrpc_user *fl, bool unsigned_pd_request)
1217 /* Check if the device node is non-secure and channel is secure*/
1218 if (!fl->is_secure_dev && fl->cctx->secure) {
1220 * Allow untrusted applications to offload only to Unsigned PD when
1221 * channel is configured as secure and block untrusted apps on channel
1222 * that does not support unsigned PD offload
1224 if (!fl->cctx->unsigned_support || !unsigned_pd_request) {
1225 dev_err(&fl->cctx->rpdev->dev, "Error: Untrusted application trying to offload to signed PD");
1233 static int fastrpc_init_create_static_process(struct fastrpc_user *fl,
1236 struct fastrpc_init_create_static init;
1237 struct fastrpc_invoke_args *args;
1238 struct fastrpc_phy_page pages[1];
1248 args = kcalloc(FASTRPC_CREATE_STATIC_PROCESS_NARGS, sizeof(*args), GFP_KERNEL);
1252 if (copy_from_user(&init, argp, sizeof(init))) {
1257 if (init.namelen > INIT_FILE_NAMELEN_MAX) {
1262 name = kzalloc(init.namelen, GFP_KERNEL);
1268 if (copy_from_user(name, (void __user *)(uintptr_t)init.name, init.namelen)) {
1273 if (!fl->cctx->remote_heap) {
1274 err = fastrpc_remote_heap_alloc(fl, fl->sctx->dev, init.memlen,
1275 &fl->cctx->remote_heap);
1279 /* Map if we have any heap VMIDs associated with this ADSP Static Process. */
1280 if (fl->cctx->vmcount) {
1281 u64 src_perms = BIT(QCOM_SCM_VMID_HLOS);
1283 err = qcom_scm_assign_mem(fl->cctx->remote_heap->phys,
1284 (u64)fl->cctx->remote_heap->size,
1286 fl->cctx->vmperms, fl->cctx->vmcount);
1288 dev_err(fl->sctx->dev, "Failed to assign memory with phys 0x%llx size 0x%llx err %d",
1289 fl->cctx->remote_heap->phys, fl->cctx->remote_heap->size, err);
1295 inbuf.pgid = fl->tgid;
1296 inbuf.namelen = init.namelen;
1300 args[0].ptr = (u64)(uintptr_t)&inbuf;
1301 args[0].length = sizeof(inbuf);
1304 args[1].ptr = (u64)(uintptr_t)name;
1305 args[1].length = inbuf.namelen;
1308 pages[0].addr = fl->cctx->remote_heap->phys;
1309 pages[0].size = fl->cctx->remote_heap->size;
1311 args[2].ptr = (u64)(uintptr_t) pages;
1312 args[2].length = sizeof(*pages);
1315 sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_CREATE_STATIC, 3, 0);
1317 err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE,
1326 if (fl->cctx->vmcount) {
1328 struct qcom_scm_vmperm dst_perms;
1331 for (i = 0; i < fl->cctx->vmcount; i++)
1332 src_perms |= BIT(fl->cctx->vmperms[i].vmid);
1334 dst_perms.vmid = QCOM_SCM_VMID_HLOS;
1335 dst_perms.perm = QCOM_SCM_PERM_RWX;
1336 err = qcom_scm_assign_mem(fl->cctx->remote_heap->phys,
1337 (u64)fl->cctx->remote_heap->size,
1338 &src_perms, &dst_perms, 1);
1340 dev_err(fl->sctx->dev, "Failed to assign memory phys 0x%llx size 0x%llx err %d",
1341 fl->cctx->remote_heap->phys, fl->cctx->remote_heap->size, err);
1344 fastrpc_buf_free(fl->cctx->remote_heap);
1353 static int fastrpc_init_create_process(struct fastrpc_user *fl,
1356 struct fastrpc_init_create init;
1357 struct fastrpc_invoke_args *args;
1358 struct fastrpc_phy_page pages[1];
1359 struct fastrpc_map *map = NULL;
1360 struct fastrpc_buf *imem = NULL;
1372 bool unsigned_module = false;
1374 args = kcalloc(FASTRPC_CREATE_PROCESS_NARGS, sizeof(*args), GFP_KERNEL);
1378 if (copy_from_user(&init, argp, sizeof(init))) {
1383 if (init.attrs & FASTRPC_MODE_UNSIGNED_MODULE)
1384 unsigned_module = true;
1386 if (is_session_rejected(fl, unsigned_module)) {
1387 err = -ECONNREFUSED;
1391 if (init.filelen > INIT_FILELEN_MAX) {
1396 inbuf.pgid = fl->tgid;
1397 inbuf.namelen = strlen(current->comm) + 1;
1398 inbuf.filelen = init.filelen;
1400 inbuf.attrs = init.attrs;
1401 inbuf.siglen = init.siglen;
1404 if (init.filelen && init.filefd) {
1405 err = fastrpc_map_create(fl, init.filefd, init.filelen, 0, &map);
1410 memlen = ALIGN(max(INIT_FILELEN_MAX, (int)init.filelen * 4),
1412 err = fastrpc_buf_alloc(fl, fl->sctx->dev, memlen,
1417 fl->init_mem = imem;
1418 args[0].ptr = (u64)(uintptr_t)&inbuf;
1419 args[0].length = sizeof(inbuf);
1422 args[1].ptr = (u64)(uintptr_t)current->comm;
1423 args[1].length = inbuf.namelen;
1426 args[2].ptr = (u64) init.file;
1427 args[2].length = inbuf.filelen;
1428 args[2].fd = init.filefd;
1430 pages[0].addr = imem->phys;
1431 pages[0].size = imem->size;
1433 args[3].ptr = (u64)(uintptr_t) pages;
1434 args[3].length = 1 * sizeof(*pages);
1437 args[4].ptr = (u64)(uintptr_t)&inbuf.attrs;
1438 args[4].length = sizeof(inbuf.attrs);
1441 args[5].ptr = (u64)(uintptr_t) &inbuf.siglen;
1442 args[5].length = sizeof(inbuf.siglen);
1445 sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_CREATE, 4, 0);
1447 sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_CREATE_ATTR, 4, 0);
1449 err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE,
1459 fl->init_mem = NULL;
1460 fastrpc_buf_free(imem);
1462 fastrpc_map_put(map);
1469 static struct fastrpc_session_ctx *fastrpc_session_alloc(
1470 struct fastrpc_channel_ctx *cctx)
1472 struct fastrpc_session_ctx *session = NULL;
1473 unsigned long flags;
1476 spin_lock_irqsave(&cctx->lock, flags);
1477 for (i = 0; i < cctx->sesscount; i++) {
1478 if (!cctx->session[i].used && cctx->session[i].valid) {
1479 cctx->session[i].used = true;
1480 session = &cctx->session[i];
1484 spin_unlock_irqrestore(&cctx->lock, flags);
1489 static void fastrpc_session_free(struct fastrpc_channel_ctx *cctx,
1490 struct fastrpc_session_ctx *session)
1492 unsigned long flags;
1494 spin_lock_irqsave(&cctx->lock, flags);
1495 session->used = false;
1496 spin_unlock_irqrestore(&cctx->lock, flags);
1499 static int fastrpc_release_current_dsp_process(struct fastrpc_user *fl)
1501 struct fastrpc_invoke_args args[1];
1506 args[0].ptr = (u64)(uintptr_t) &tgid;
1507 args[0].length = sizeof(tgid);
1509 sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_RELEASE, 1, 0);
1511 return fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE,
1515 static int fastrpc_device_release(struct inode *inode, struct file *file)
1517 struct fastrpc_user *fl = (struct fastrpc_user *)file->private_data;
1518 struct fastrpc_channel_ctx *cctx = fl->cctx;
1519 struct fastrpc_invoke_ctx *ctx, *n;
1520 struct fastrpc_map *map, *m;
1521 struct fastrpc_buf *buf, *b;
1522 unsigned long flags;
1524 fastrpc_release_current_dsp_process(fl);
1526 spin_lock_irqsave(&cctx->lock, flags);
1527 list_del(&fl->user);
1528 spin_unlock_irqrestore(&cctx->lock, flags);
1531 fastrpc_buf_free(fl->init_mem);
1533 list_for_each_entry_safe(ctx, n, &fl->pending, node) {
1534 list_del(&ctx->node);
1535 fastrpc_context_put(ctx);
1538 list_for_each_entry_safe(map, m, &fl->maps, node)
1539 fastrpc_map_put(map);
1541 list_for_each_entry_safe(buf, b, &fl->mmaps, node) {
1542 list_del(&buf->node);
1543 fastrpc_buf_free(buf);
1546 fastrpc_session_free(cctx, fl->sctx);
1547 fastrpc_channel_ctx_put(cctx);
1549 mutex_destroy(&fl->mutex);
1551 file->private_data = NULL;
1556 static int fastrpc_device_open(struct inode *inode, struct file *filp)
1558 struct fastrpc_channel_ctx *cctx;
1559 struct fastrpc_device *fdevice;
1560 struct fastrpc_user *fl = NULL;
1561 unsigned long flags;
1563 fdevice = miscdev_to_fdevice(filp->private_data);
1564 cctx = fdevice->cctx;
1566 fl = kzalloc(sizeof(*fl), GFP_KERNEL);
1570 /* Released in fastrpc_device_release() */
1571 fastrpc_channel_ctx_get(cctx);
1573 filp->private_data = fl;
1574 spin_lock_init(&fl->lock);
1575 mutex_init(&fl->mutex);
1576 INIT_LIST_HEAD(&fl->pending);
1577 INIT_LIST_HEAD(&fl->maps);
1578 INIT_LIST_HEAD(&fl->mmaps);
1579 INIT_LIST_HEAD(&fl->user);
1580 fl->tgid = current->tgid;
1582 fl->is_secure_dev = fdevice->secure;
1584 fl->sctx = fastrpc_session_alloc(cctx);
1586 dev_err(&cctx->rpdev->dev, "No session available\n");
1587 mutex_destroy(&fl->mutex);
1593 spin_lock_irqsave(&cctx->lock, flags);
1594 list_add_tail(&fl->user, &cctx->users);
1595 spin_unlock_irqrestore(&cctx->lock, flags);
1600 static int fastrpc_dmabuf_alloc(struct fastrpc_user *fl, char __user *argp)
1602 struct fastrpc_alloc_dma_buf bp;
1603 DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
1604 struct fastrpc_buf *buf = NULL;
1607 if (copy_from_user(&bp, argp, sizeof(bp)))
1610 err = fastrpc_buf_alloc(fl, fl->sctx->dev, bp.size, &buf);
1613 exp_info.ops = &fastrpc_dma_buf_ops;
1614 exp_info.size = bp.size;
1615 exp_info.flags = O_RDWR;
1616 exp_info.priv = buf;
1617 buf->dmabuf = dma_buf_export(&exp_info);
1618 if (IS_ERR(buf->dmabuf)) {
1619 err = PTR_ERR(buf->dmabuf);
1620 fastrpc_buf_free(buf);
1624 bp.fd = dma_buf_fd(buf->dmabuf, O_ACCMODE);
1626 dma_buf_put(buf->dmabuf);
1630 if (copy_to_user(argp, &bp, sizeof(bp))) {
1632 * The usercopy failed, but we can't do much about it, as
1633 * dma_buf_fd() already called fd_install() and made the
1634 * file descriptor accessible for the current process. It
1635 * might already be closed and dmabuf no longer valid when
1636 * we reach this point. Therefore "leak" the fd and rely on
1637 * the process exit path to do any required cleanup.
1645 static int fastrpc_init_attach(struct fastrpc_user *fl, int pd)
1647 struct fastrpc_invoke_args args[1];
1648 int tgid = fl->tgid;
1651 args[0].ptr = (u64)(uintptr_t) &tgid;
1652 args[0].length = sizeof(tgid);
1654 sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_ATTACH, 1, 0);
1657 return fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE,
1661 static int fastrpc_invoke(struct fastrpc_user *fl, char __user *argp)
1663 struct fastrpc_invoke_args *args = NULL;
1664 struct fastrpc_invoke inv;
1668 if (copy_from_user(&inv, argp, sizeof(inv)))
1671 /* nscalars is truncated here to max supported value */
1672 nscalars = REMOTE_SCALARS_LENGTH(inv.sc);
1674 args = kcalloc(nscalars, sizeof(*args), GFP_KERNEL);
1678 if (copy_from_user(args, (void __user *)(uintptr_t)inv.args,
1679 nscalars * sizeof(*args))) {
1685 err = fastrpc_internal_invoke(fl, false, inv.handle, inv.sc, args);
1691 static int fastrpc_get_info_from_dsp(struct fastrpc_user *fl, uint32_t *dsp_attr_buf,
1692 uint32_t dsp_attr_buf_len)
1694 struct fastrpc_invoke_args args[2] = { 0 };
1696 /* Capability filled in userspace */
1697 dsp_attr_buf[0] = 0;
1699 args[0].ptr = (u64)(uintptr_t)&dsp_attr_buf_len;
1700 args[0].length = sizeof(dsp_attr_buf_len);
1702 args[1].ptr = (u64)(uintptr_t)&dsp_attr_buf[1];
1703 args[1].length = dsp_attr_buf_len;
1707 return fastrpc_internal_invoke(fl, true, FASTRPC_DSP_UTILITIES_HANDLE,
1708 FASTRPC_SCALARS(0, 1, 1), args);
1711 static int fastrpc_get_info_from_kernel(struct fastrpc_ioctl_capability *cap,
1712 struct fastrpc_user *fl)
1714 struct fastrpc_channel_ctx *cctx = fl->cctx;
1715 uint32_t attribute_id = cap->attribute_id;
1716 uint32_t *dsp_attributes;
1717 unsigned long flags;
1718 uint32_t domain = cap->domain;
1721 spin_lock_irqsave(&cctx->lock, flags);
1722 /* check if we already have queried dsp for attributes */
1723 if (cctx->valid_attributes) {
1724 spin_unlock_irqrestore(&cctx->lock, flags);
1727 spin_unlock_irqrestore(&cctx->lock, flags);
1729 dsp_attributes = kzalloc(FASTRPC_MAX_DSP_ATTRIBUTES_LEN, GFP_KERNEL);
1730 if (!dsp_attributes)
1733 err = fastrpc_get_info_from_dsp(fl, dsp_attributes, FASTRPC_MAX_DSP_ATTRIBUTES_LEN);
1734 if (err == DSP_UNSUPPORTED_API) {
1735 dev_info(&cctx->rpdev->dev,
1736 "Warning: DSP capabilities not supported on domain: %d\n", domain);
1737 kfree(dsp_attributes);
1740 dev_err(&cctx->rpdev->dev, "Error: dsp information is incorrect err: %d\n", err);
1741 kfree(dsp_attributes);
1745 spin_lock_irqsave(&cctx->lock, flags);
1746 memcpy(cctx->dsp_attributes, dsp_attributes, FASTRPC_MAX_DSP_ATTRIBUTES_LEN);
1747 cctx->valid_attributes = true;
1748 spin_unlock_irqrestore(&cctx->lock, flags);
1749 kfree(dsp_attributes);
1751 cap->capability = cctx->dsp_attributes[attribute_id];
1755 static int fastrpc_get_dsp_info(struct fastrpc_user *fl, char __user *argp)
1757 struct fastrpc_ioctl_capability cap = {0};
1760 if (copy_from_user(&cap, argp, sizeof(cap)))
1764 if (cap.domain >= FASTRPC_DEV_MAX) {
1765 dev_err(&fl->cctx->rpdev->dev, "Error: Invalid domain id:%d, err:%d\n",
1770 /* Fastrpc Capablities does not support modem domain */
1771 if (cap.domain == MDSP_DOMAIN_ID) {
1772 dev_err(&fl->cctx->rpdev->dev, "Error: modem not supported %d\n", err);
1776 if (cap.attribute_id >= FASTRPC_MAX_DSP_ATTRIBUTES) {
1777 dev_err(&fl->cctx->rpdev->dev, "Error: invalid attribute: %d, err: %d\n",
1778 cap.attribute_id, err);
1782 err = fastrpc_get_info_from_kernel(&cap, fl);
1786 if (copy_to_user(argp, &cap.capability, sizeof(cap.capability)))
1792 static int fastrpc_req_munmap_impl(struct fastrpc_user *fl, struct fastrpc_buf *buf)
1794 struct fastrpc_invoke_args args[1] = { [0] = { 0 } };
1795 struct fastrpc_munmap_req_msg req_msg;
1796 struct device *dev = fl->sctx->dev;
1800 req_msg.pgid = fl->tgid;
1801 req_msg.size = buf->size;
1802 req_msg.vaddr = buf->raddr;
1804 args[0].ptr = (u64) (uintptr_t) &req_msg;
1805 args[0].length = sizeof(req_msg);
1807 sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MUNMAP, 1, 0);
1808 err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc,
1811 dev_dbg(dev, "unmmap\tpt 0x%09lx OK\n", buf->raddr);
1812 spin_lock(&fl->lock);
1813 list_del(&buf->node);
1814 spin_unlock(&fl->lock);
1815 fastrpc_buf_free(buf);
1817 dev_err(dev, "unmmap\tpt 0x%09lx ERROR\n", buf->raddr);
1823 static int fastrpc_req_munmap(struct fastrpc_user *fl, char __user *argp)
1825 struct fastrpc_buf *buf = NULL, *iter, *b;
1826 struct fastrpc_req_munmap req;
1827 struct device *dev = fl->sctx->dev;
1829 if (copy_from_user(&req, argp, sizeof(req)))
1832 spin_lock(&fl->lock);
1833 list_for_each_entry_safe(iter, b, &fl->mmaps, node) {
1834 if ((iter->raddr == req.vaddrout) && (iter->size == req.size)) {
1839 spin_unlock(&fl->lock);
1842 dev_err(dev, "mmap\t\tpt 0x%09llx [len 0x%08llx] not in list\n",
1843 req.vaddrout, req.size);
1847 return fastrpc_req_munmap_impl(fl, buf);
1850 static int fastrpc_req_mmap(struct fastrpc_user *fl, char __user *argp)
1852 struct fastrpc_invoke_args args[3] = { [0 ... 2] = { 0 } };
1853 struct fastrpc_buf *buf = NULL;
1854 struct fastrpc_mmap_req_msg req_msg;
1855 struct fastrpc_mmap_rsp_msg rsp_msg;
1856 struct fastrpc_phy_page pages;
1857 struct fastrpc_req_mmap req;
1858 struct device *dev = fl->sctx->dev;
1862 if (copy_from_user(&req, argp, sizeof(req)))
1865 if (req.flags != ADSP_MMAP_ADD_PAGES && req.flags != ADSP_MMAP_REMOTE_HEAP_ADDR) {
1866 dev_err(dev, "flag not supported 0x%x\n", req.flags);
1872 dev_err(dev, "adding user allocated pages is not supported\n");
1876 if (req.flags == ADSP_MMAP_REMOTE_HEAP_ADDR)
1877 err = fastrpc_remote_heap_alloc(fl, dev, req.size, &buf);
1879 err = fastrpc_buf_alloc(fl, dev, req.size, &buf);
1882 dev_err(dev, "failed to allocate buffer\n");
1886 req_msg.pgid = fl->tgid;
1887 req_msg.flags = req.flags;
1888 req_msg.vaddr = req.vaddrin;
1889 req_msg.num = sizeof(pages);
1891 args[0].ptr = (u64) (uintptr_t) &req_msg;
1892 args[0].length = sizeof(req_msg);
1894 pages.addr = buf->phys;
1895 pages.size = buf->size;
1897 args[1].ptr = (u64) (uintptr_t) &pages;
1898 args[1].length = sizeof(pages);
1900 args[2].ptr = (u64) (uintptr_t) &rsp_msg;
1901 args[2].length = sizeof(rsp_msg);
1903 sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MMAP, 2, 1);
1904 err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc,
1907 dev_err(dev, "mmap error (len 0x%08llx)\n", buf->size);
1911 /* update the buffer to be able to deallocate the memory on the DSP */
1912 buf->raddr = (uintptr_t) rsp_msg.vaddr;
1914 /* let the client know the address to use */
1915 req.vaddrout = rsp_msg.vaddr;
1917 /* Add memory to static PD pool, protection thru hypervisor */
1918 if (req.flags == ADSP_MMAP_REMOTE_HEAP_ADDR && fl->cctx->vmcount) {
1919 u64 src_perms = BIT(QCOM_SCM_VMID_HLOS);
1921 err = qcom_scm_assign_mem(buf->phys, (u64)buf->size,
1922 &src_perms, fl->cctx->vmperms, fl->cctx->vmcount);
1924 dev_err(fl->sctx->dev, "Failed to assign memory phys 0x%llx size 0x%llx err %d",
1925 buf->phys, buf->size, err);
1930 spin_lock(&fl->lock);
1931 list_add_tail(&buf->node, &fl->mmaps);
1932 spin_unlock(&fl->lock);
1934 if (copy_to_user((void __user *)argp, &req, sizeof(req))) {
1939 dev_dbg(dev, "mmap\t\tpt 0x%09lx OK [len 0x%08llx]\n",
1940 buf->raddr, buf->size);
1945 fastrpc_req_munmap_impl(fl, buf);
1947 fastrpc_buf_free(buf);
1952 static int fastrpc_req_mem_unmap_impl(struct fastrpc_user *fl, struct fastrpc_mem_unmap *req)
1954 struct fastrpc_invoke_args args[1] = { [0] = { 0 } };
1955 struct fastrpc_map *map = NULL, *iter, *m;
1956 struct fastrpc_mem_unmap_req_msg req_msg = { 0 };
1959 struct device *dev = fl->sctx->dev;
1961 spin_lock(&fl->lock);
1962 list_for_each_entry_safe(iter, m, &fl->maps, node) {
1963 if ((req->fd < 0 || iter->fd == req->fd) && (iter->raddr == req->vaddr)) {
1969 spin_unlock(&fl->lock);
1972 dev_err(dev, "map not in list\n");
1976 req_msg.pgid = fl->tgid;
1977 req_msg.len = map->len;
1978 req_msg.vaddrin = map->raddr;
1979 req_msg.fd = map->fd;
1981 args[0].ptr = (u64) (uintptr_t) &req_msg;
1982 args[0].length = sizeof(req_msg);
1984 sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MEM_UNMAP, 1, 0);
1985 err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc,
1988 dev_err(dev, "unmmap\tpt fd = %d, 0x%09llx error\n", map->fd, map->raddr);
1991 fastrpc_map_put(map);
1996 static int fastrpc_req_mem_unmap(struct fastrpc_user *fl, char __user *argp)
1998 struct fastrpc_mem_unmap req;
2000 if (copy_from_user(&req, argp, sizeof(req)))
2003 return fastrpc_req_mem_unmap_impl(fl, &req);
2006 static int fastrpc_req_mem_map(struct fastrpc_user *fl, char __user *argp)
2008 struct fastrpc_invoke_args args[4] = { [0 ... 3] = { 0 } };
2009 struct fastrpc_mem_map_req_msg req_msg = { 0 };
2010 struct fastrpc_mmap_rsp_msg rsp_msg = { 0 };
2011 struct fastrpc_mem_unmap req_unmap = { 0 };
2012 struct fastrpc_phy_page pages = { 0 };
2013 struct fastrpc_mem_map req;
2014 struct device *dev = fl->sctx->dev;
2015 struct fastrpc_map *map = NULL;
2019 if (copy_from_user(&req, argp, sizeof(req)))
2022 /* create SMMU mapping */
2023 err = fastrpc_map_create(fl, req.fd, req.length, 0, &map);
2025 dev_err(dev, "failed to map buffer, fd = %d\n", req.fd);
2029 req_msg.pgid = fl->tgid;
2030 req_msg.fd = req.fd;
2031 req_msg.offset = req.offset;
2032 req_msg.vaddrin = req.vaddrin;
2033 map->va = (void *) (uintptr_t) req.vaddrin;
2034 req_msg.flags = req.flags;
2035 req_msg.num = sizeof(pages);
2036 req_msg.data_len = 0;
2038 args[0].ptr = (u64) (uintptr_t) &req_msg;
2039 args[0].length = sizeof(req_msg);
2041 pages.addr = map->phys;
2042 pages.size = map->size;
2044 args[1].ptr = (u64) (uintptr_t) &pages;
2045 args[1].length = sizeof(pages);
2047 args[2].ptr = (u64) (uintptr_t) &pages;
2050 args[3].ptr = (u64) (uintptr_t) &rsp_msg;
2051 args[3].length = sizeof(rsp_msg);
2053 sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MEM_MAP, 3, 1);
2054 err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc, &args[0]);
2056 dev_err(dev, "mem mmap error, fd %d, vaddr %llx, size %lld\n",
2057 req.fd, req.vaddrin, map->size);
2061 /* update the buffer to be able to deallocate the memory on the DSP */
2062 map->raddr = rsp_msg.vaddr;
2064 /* let the client know the address to use */
2065 req.vaddrout = rsp_msg.vaddr;
2067 if (copy_to_user((void __user *)argp, &req, sizeof(req))) {
2068 /* unmap the memory and release the buffer */
2069 req_unmap.vaddr = (uintptr_t) rsp_msg.vaddr;
2070 req_unmap.length = map->size;
2071 fastrpc_req_mem_unmap_impl(fl, &req_unmap);
2078 fastrpc_map_put(map);
2083 static long fastrpc_device_ioctl(struct file *file, unsigned int cmd,
2086 struct fastrpc_user *fl = (struct fastrpc_user *)file->private_data;
2087 char __user *argp = (char __user *)arg;
2091 case FASTRPC_IOCTL_INVOKE:
2092 err = fastrpc_invoke(fl, argp);
2094 case FASTRPC_IOCTL_INIT_ATTACH:
2095 err = fastrpc_init_attach(fl, ROOT_PD);
2097 case FASTRPC_IOCTL_INIT_ATTACH_SNS:
2098 err = fastrpc_init_attach(fl, SENSORS_PD);
2100 case FASTRPC_IOCTL_INIT_CREATE_STATIC:
2101 err = fastrpc_init_create_static_process(fl, argp);
2103 case FASTRPC_IOCTL_INIT_CREATE:
2104 err = fastrpc_init_create_process(fl, argp);
2106 case FASTRPC_IOCTL_ALLOC_DMA_BUFF:
2107 err = fastrpc_dmabuf_alloc(fl, argp);
2109 case FASTRPC_IOCTL_MMAP:
2110 err = fastrpc_req_mmap(fl, argp);
2112 case FASTRPC_IOCTL_MUNMAP:
2113 err = fastrpc_req_munmap(fl, argp);
2115 case FASTRPC_IOCTL_MEM_MAP:
2116 err = fastrpc_req_mem_map(fl, argp);
2118 case FASTRPC_IOCTL_MEM_UNMAP:
2119 err = fastrpc_req_mem_unmap(fl, argp);
2121 case FASTRPC_IOCTL_GET_DSP_INFO:
2122 err = fastrpc_get_dsp_info(fl, argp);
2132 static const struct file_operations fastrpc_fops = {
2133 .open = fastrpc_device_open,
2134 .release = fastrpc_device_release,
2135 .unlocked_ioctl = fastrpc_device_ioctl,
2136 .compat_ioctl = fastrpc_device_ioctl,
2139 static int fastrpc_cb_probe(struct platform_device *pdev)
2141 struct fastrpc_channel_ctx *cctx;
2142 struct fastrpc_session_ctx *sess;
2143 struct device *dev = &pdev->dev;
2144 int i, sessions = 0;
2145 unsigned long flags;
2148 cctx = dev_get_drvdata(dev->parent);
2152 of_property_read_u32(dev->of_node, "qcom,nsessions", &sessions);
2154 spin_lock_irqsave(&cctx->lock, flags);
2155 if (cctx->sesscount >= FASTRPC_MAX_SESSIONS) {
2156 dev_err(&pdev->dev, "too many sessions\n");
2157 spin_unlock_irqrestore(&cctx->lock, flags);
2160 sess = &cctx->session[cctx->sesscount++];
2164 dev_set_drvdata(dev, sess);
2166 if (of_property_read_u32(dev->of_node, "reg", &sess->sid))
2167 dev_info(dev, "FastRPC Session ID not specified in DT\n");
2170 struct fastrpc_session_ctx *dup_sess;
2172 for (i = 1; i < sessions; i++) {
2173 if (cctx->sesscount >= FASTRPC_MAX_SESSIONS)
2175 dup_sess = &cctx->session[cctx->sesscount++];
2176 memcpy(dup_sess, sess, sizeof(*dup_sess));
2179 spin_unlock_irqrestore(&cctx->lock, flags);
2180 rc = dma_set_mask(dev, DMA_BIT_MASK(32));
2182 dev_err(dev, "32-bit DMA enable failed\n");
2189 static int fastrpc_cb_remove(struct platform_device *pdev)
2191 struct fastrpc_channel_ctx *cctx = dev_get_drvdata(pdev->dev.parent);
2192 struct fastrpc_session_ctx *sess = dev_get_drvdata(&pdev->dev);
2193 unsigned long flags;
2196 spin_lock_irqsave(&cctx->lock, flags);
2197 for (i = 0; i < FASTRPC_MAX_SESSIONS; i++) {
2198 if (cctx->session[i].sid == sess->sid) {
2199 cctx->session[i].valid = false;
2203 spin_unlock_irqrestore(&cctx->lock, flags);
2208 static const struct of_device_id fastrpc_match_table[] = {
2209 { .compatible = "qcom,fastrpc-compute-cb", },
2213 static struct platform_driver fastrpc_cb_driver = {
2214 .probe = fastrpc_cb_probe,
2215 .remove = fastrpc_cb_remove,
2217 .name = "qcom,fastrpc-cb",
2218 .of_match_table = fastrpc_match_table,
2219 .suppress_bind_attrs = true,
2223 static int fastrpc_device_register(struct device *dev, struct fastrpc_channel_ctx *cctx,
2224 bool is_secured, const char *domain)
2226 struct fastrpc_device *fdev;
2229 fdev = devm_kzalloc(dev, sizeof(*fdev), GFP_KERNEL);
2233 fdev->secure = is_secured;
2235 fdev->miscdev.minor = MISC_DYNAMIC_MINOR;
2236 fdev->miscdev.fops = &fastrpc_fops;
2237 fdev->miscdev.name = devm_kasprintf(dev, GFP_KERNEL, "fastrpc-%s%s",
2238 domain, is_secured ? "-secure" : "");
2239 if (!fdev->miscdev.name)
2242 err = misc_register(&fdev->miscdev);
2245 cctx->secure_fdevice = fdev;
2247 cctx->fdevice = fdev;
2253 static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
2255 struct device *rdev = &rpdev->dev;
2256 struct fastrpc_channel_ctx *data;
2257 int i, err, domain_id = -1, vmcount;
2260 unsigned int vmids[FASTRPC_MAX_VMIDS];
2262 err = of_property_read_string(rdev->of_node, "label", &domain);
2264 dev_info(rdev, "FastRPC Domain not specified in DT\n");
2268 for (i = 0; i <= CDSP_DOMAIN_ID; i++) {
2269 if (!strcmp(domains[i], domain)) {
2275 if (domain_id < 0) {
2276 dev_info(rdev, "FastRPC Invalid Domain ID %d\n", domain_id);
2280 if (of_reserved_mem_device_init_by_idx(rdev, rdev->of_node, 0))
2281 dev_info(rdev, "no reserved DMA memory for FASTRPC\n");
2283 vmcount = of_property_read_variable_u32_array(rdev->of_node,
2284 "qcom,vmids", &vmids[0], 0, FASTRPC_MAX_VMIDS);
2287 else if (!qcom_scm_is_available())
2288 return -EPROBE_DEFER;
2290 data = kzalloc(sizeof(*data), GFP_KERNEL);
2295 data->vmcount = vmcount;
2296 for (i = 0; i < data->vmcount; i++) {
2297 data->vmperms[i].vmid = vmids[i];
2298 data->vmperms[i].perm = QCOM_SCM_PERM_RWX;
2302 secure_dsp = !(of_property_read_bool(rdev->of_node, "qcom,non-secure-domain"));
2303 data->secure = secure_dsp;
2305 switch (domain_id) {
2306 case ADSP_DOMAIN_ID:
2307 case MDSP_DOMAIN_ID:
2308 case SDSP_DOMAIN_ID:
2309 /* Unsigned PD offloading is only supported on CDSP*/
2310 data->unsigned_support = false;
2311 err = fastrpc_device_register(rdev, data, secure_dsp, domains[domain_id]);
2315 case CDSP_DOMAIN_ID:
2316 data->unsigned_support = true;
2317 /* Create both device nodes so that we can allow both Signed and Unsigned PD */
2318 err = fastrpc_device_register(rdev, data, true, domains[domain_id]);
2322 err = fastrpc_device_register(rdev, data, false, domains[domain_id]);
2331 kref_init(&data->refcount);
2333 dev_set_drvdata(&rpdev->dev, data);
2334 rdev->dma_mask = &data->dma_mask;
2335 dma_set_mask_and_coherent(rdev, DMA_BIT_MASK(32));
2336 INIT_LIST_HEAD(&data->users);
2337 INIT_LIST_HEAD(&data->invoke_interrupted_mmaps);
2338 spin_lock_init(&data->lock);
2339 idr_init(&data->ctx_idr);
2340 data->domain_id = domain_id;
2341 data->rpdev = rpdev;
2343 err = of_platform_populate(rdev->of_node, NULL, NULL, rdev);
2345 goto populate_error;
2351 misc_deregister(&data->fdevice->miscdev);
2352 if (data->secure_fdevice)
2353 misc_deregister(&data->secure_fdevice->miscdev);
2360 static void fastrpc_notify_users(struct fastrpc_user *user)
2362 struct fastrpc_invoke_ctx *ctx;
2364 spin_lock(&user->lock);
2365 list_for_each_entry(ctx, &user->pending, node) {
2366 ctx->retval = -EPIPE;
2367 complete(&ctx->work);
2369 spin_unlock(&user->lock);
2372 static void fastrpc_rpmsg_remove(struct rpmsg_device *rpdev)
2374 struct fastrpc_channel_ctx *cctx = dev_get_drvdata(&rpdev->dev);
2375 struct fastrpc_buf *buf, *b;
2376 struct fastrpc_user *user;
2377 unsigned long flags;
2379 /* No invocations past this point */
2380 spin_lock_irqsave(&cctx->lock, flags);
2382 list_for_each_entry(user, &cctx->users, user)
2383 fastrpc_notify_users(user);
2384 spin_unlock_irqrestore(&cctx->lock, flags);
2387 misc_deregister(&cctx->fdevice->miscdev);
2389 if (cctx->secure_fdevice)
2390 misc_deregister(&cctx->secure_fdevice->miscdev);
2392 list_for_each_entry_safe(buf, b, &cctx->invoke_interrupted_mmaps, node)
2393 list_del(&buf->node);
2395 if (cctx->remote_heap)
2396 fastrpc_buf_free(cctx->remote_heap);
2398 of_platform_depopulate(&rpdev->dev);
2400 fastrpc_channel_ctx_put(cctx);
2403 static int fastrpc_rpmsg_callback(struct rpmsg_device *rpdev, void *data,
2404 int len, void *priv, u32 addr)
2406 struct fastrpc_channel_ctx *cctx = dev_get_drvdata(&rpdev->dev);
2407 struct fastrpc_invoke_rsp *rsp = data;
2408 struct fastrpc_invoke_ctx *ctx;
2409 unsigned long flags;
2410 unsigned long ctxid;
2412 if (len < sizeof(*rsp))
2415 ctxid = ((rsp->ctx & FASTRPC_CTXID_MASK) >> 4);
2417 spin_lock_irqsave(&cctx->lock, flags);
2418 ctx = idr_find(&cctx->ctx_idr, ctxid);
2419 spin_unlock_irqrestore(&cctx->lock, flags);
2422 dev_err(&rpdev->dev, "No context ID matches response\n");
2426 ctx->retval = rsp->retval;
2427 complete(&ctx->work);
2430 * The DMA buffer associated with the context cannot be freed in
2431 * interrupt context so schedule it through a worker thread to
2432 * avoid a kernel BUG.
2434 schedule_work(&ctx->put_work);
2439 static const struct of_device_id fastrpc_rpmsg_of_match[] = {
2440 { .compatible = "qcom,fastrpc" },
2443 MODULE_DEVICE_TABLE(of, fastrpc_rpmsg_of_match);
2445 static struct rpmsg_driver fastrpc_driver = {
2446 .probe = fastrpc_rpmsg_probe,
2447 .remove = fastrpc_rpmsg_remove,
2448 .callback = fastrpc_rpmsg_callback,
2450 .name = "qcom,fastrpc",
2451 .of_match_table = fastrpc_rpmsg_of_match,
2455 static int fastrpc_init(void)
2459 ret = platform_driver_register(&fastrpc_cb_driver);
2461 pr_err("fastrpc: failed to register cb driver\n");
2465 ret = register_rpmsg_driver(&fastrpc_driver);
2467 pr_err("fastrpc: failed to register rpmsg driver\n");
2468 platform_driver_unregister(&fastrpc_cb_driver);
2474 module_init(fastrpc_init);
2476 static void fastrpc_exit(void)
2478 platform_driver_unregister(&fastrpc_cb_driver);
2479 unregister_rpmsg_driver(&fastrpc_driver);
2481 module_exit(fastrpc_exit);
2483 MODULE_LICENSE("GPL v2");
2484 MODULE_IMPORT_NS(DMA_BUF);