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path: root/drivers/misc/fastrpc.c
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Diffstat (limited to 'drivers/misc/fastrpc.c')
-rw-r--r--drivers/misc/fastrpc.c84
1 files changed, 43 insertions, 41 deletions
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 74181b8c386b..378923594f02 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -139,14 +139,14 @@ struct fastrpc_mmap_rsp_msg {
};
struct fastrpc_mmap_req_msg {
- s32 pgid;
+ s32 client_id;
u32 flags;
u64 vaddr;
s32 num;
};
struct fastrpc_mem_map_req_msg {
- s32 pgid;
+ s32 client_id;
s32 fd;
s32 offset;
u32 flags;
@@ -156,20 +156,20 @@ struct fastrpc_mem_map_req_msg {
};
struct fastrpc_munmap_req_msg {
- s32 pgid;
+ s32 client_id;
u64 vaddr;
u64 size;
};
struct fastrpc_mem_unmap_req_msg {
- s32 pgid;
+ s32 client_id;
s32 fd;
u64 vaddrin;
u64 len;
};
struct fastrpc_msg {
- int pid; /* process group id */
+ int client_id; /* process client id */
int tid; /* thread id */
u64 ctx; /* invoke caller context */
u32 handle; /* handle to invoke */
@@ -234,7 +234,7 @@ struct fastrpc_invoke_ctx {
int nbufs;
int retval;
int pid;
- int tgid;
+ int client_id;
u32 sc;
u32 *crc;
u64 ctxid;
@@ -299,7 +299,7 @@ struct fastrpc_user {
struct fastrpc_session_ctx *sctx;
struct fastrpc_buf *init_mem;
- int tgid;
+ int client_id;
int pd;
bool is_secure_dev;
/* Lock for lists */
@@ -614,7 +614,7 @@ static struct fastrpc_invoke_ctx *fastrpc_context_alloc(
ctx->sc = sc;
ctx->retval = -1;
ctx->pid = current->pid;
- ctx->tgid = user->tgid;
+ ctx->client_id = user->client_id;
ctx->cctx = cctx;
init_completion(&ctx->work);
INIT_WORK(&ctx->put_work, fastrpc_context_put_wq);
@@ -992,7 +992,7 @@ static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
mmap_read_lock(current->mm);
vma = find_vma(current->mm, ctx->args[i].ptr);
if (vma)
- pages[i].addr += ctx->args[i].ptr -
+ pages[i].addr += (ctx->args[i].ptr & PAGE_MASK) -
vma->vm_start;
mmap_read_unlock(current->mm);
@@ -1019,8 +1019,8 @@ static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
(pkt_size - rlen);
pages[i].addr = pages[i].addr & PAGE_MASK;
- pg_start = (args & PAGE_MASK) >> PAGE_SHIFT;
- pg_end = ((args + len - 1) & PAGE_MASK) >> PAGE_SHIFT;
+ pg_start = (rpra[i].buf.pv & PAGE_MASK) >> PAGE_SHIFT;
+ pg_end = ((rpra[i].buf.pv + len - 1) & PAGE_MASK) >> PAGE_SHIFT;
pages[i].size = (pg_end - pg_start + 1) * PAGE_SIZE;
args = args + mlen;
rlen -= mlen;
@@ -1115,11 +1115,11 @@ static int fastrpc_invoke_send(struct fastrpc_session_ctx *sctx,
int ret;
cctx = fl->cctx;
- msg->pid = fl->tgid;
+ msg->client_id = fl->client_id;
msg->tid = current->pid;
if (kernel)
- msg->pid = 0;
+ msg->client_id = 0;
msg->ctx = ctx->ctxid | fl->pd;
msg->handle = handle;
@@ -1244,7 +1244,7 @@ static int fastrpc_init_create_static_process(struct fastrpc_user *fl,
int err;
bool scm_done = false;
struct {
- int pgid;
+ int client_id;
u32 namelen;
u32 pageslen;
} inbuf;
@@ -1293,7 +1293,7 @@ static int fastrpc_init_create_static_process(struct fastrpc_user *fl,
}
}
- inbuf.pgid = fl->tgid;
+ inbuf.client_id = fl->client_id;
inbuf.namelen = init.namelen;
inbuf.pageslen = 0;
fl->pd = USER_PD;
@@ -1363,7 +1363,7 @@ static int fastrpc_init_create_process(struct fastrpc_user *fl,
int memlen;
int err;
struct {
- int pgid;
+ int client_id;
u32 namelen;
u32 filelen;
u32 pageslen;
@@ -1395,7 +1395,7 @@ static int fastrpc_init_create_process(struct fastrpc_user *fl,
goto err;
}
- inbuf.pgid = fl->tgid;
+ inbuf.client_id = fl->client_id;
inbuf.namelen = strlen(current->comm) + 1;
inbuf.filelen = init.filelen;
inbuf.pageslen = 1;
@@ -1469,8 +1469,9 @@ err:
}
static struct fastrpc_session_ctx *fastrpc_session_alloc(
- struct fastrpc_channel_ctx *cctx)
+ struct fastrpc_user *fl)
{
+ struct fastrpc_channel_ctx *cctx = fl->cctx;
struct fastrpc_session_ctx *session = NULL;
unsigned long flags;
int i;
@@ -1480,6 +1481,8 @@ static struct fastrpc_session_ctx *fastrpc_session_alloc(
if (!cctx->session[i].used && cctx->session[i].valid) {
cctx->session[i].used = true;
session = &cctx->session[i];
+ /* any non-zero ID will work, session_idx + 1 is the simplest one */
+ fl->client_id = i + 1;
break;
}
}
@@ -1501,12 +1504,12 @@ static void fastrpc_session_free(struct fastrpc_channel_ctx *cctx,
static int fastrpc_release_current_dsp_process(struct fastrpc_user *fl)
{
struct fastrpc_invoke_args args[1];
- int tgid = 0;
+ int client_id = 0;
u32 sc;
- tgid = fl->tgid;
- args[0].ptr = (u64)(uintptr_t) &tgid;
- args[0].length = sizeof(tgid);
+ client_id = fl->client_id;
+ args[0].ptr = (u64)(uintptr_t) &client_id;
+ args[0].length = sizeof(client_id);
args[0].fd = -1;
sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_RELEASE, 1, 0);
@@ -1579,11 +1582,10 @@ static int fastrpc_device_open(struct inode *inode, struct file *filp)
INIT_LIST_HEAD(&fl->maps);
INIT_LIST_HEAD(&fl->mmaps);
INIT_LIST_HEAD(&fl->user);
- fl->tgid = current->tgid;
fl->cctx = cctx;
fl->is_secure_dev = fdevice->secure;
- fl->sctx = fastrpc_session_alloc(cctx);
+ fl->sctx = fastrpc_session_alloc(fl);
if (!fl->sctx) {
dev_err(&cctx->rpdev->dev, "No session available\n");
mutex_destroy(&fl->mutex);
@@ -1647,11 +1649,11 @@ static int fastrpc_dmabuf_alloc(struct fastrpc_user *fl, char __user *argp)
static int fastrpc_init_attach(struct fastrpc_user *fl, int pd)
{
struct fastrpc_invoke_args args[1];
- int tgid = fl->tgid;
+ int client_id = fl->client_id;
u32 sc;
- args[0].ptr = (u64)(uintptr_t) &tgid;
- args[0].length = sizeof(tgid);
+ args[0].ptr = (u64)(uintptr_t) &client_id;
+ args[0].length = sizeof(client_id);
args[0].fd = -1;
sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_ATTACH, 1, 0);
fl->pd = pd;
@@ -1803,7 +1805,7 @@ static int fastrpc_req_munmap_impl(struct fastrpc_user *fl, struct fastrpc_buf *
int err;
u32 sc;
- req_msg.pgid = fl->tgid;
+ req_msg.client_id = fl->client_id;
req_msg.size = buf->size;
req_msg.vaddr = buf->raddr;
@@ -1889,7 +1891,7 @@ static int fastrpc_req_mmap(struct fastrpc_user *fl, char __user *argp)
return err;
}
- req_msg.pgid = fl->tgid;
+ req_msg.client_id = fl->client_id;
req_msg.flags = req.flags;
req_msg.vaddr = req.vaddrin;
req_msg.num = sizeof(pages);
@@ -1978,7 +1980,7 @@ static int fastrpc_req_mem_unmap_impl(struct fastrpc_user *fl, struct fastrpc_me
return -EINVAL;
}
- req_msg.pgid = fl->tgid;
+ req_msg.client_id = fl->client_id;
req_msg.len = map->len;
req_msg.vaddrin = map->raddr;
req_msg.fd = map->fd;
@@ -2031,7 +2033,7 @@ static int fastrpc_req_mem_map(struct fastrpc_user *fl, char __user *argp)
return err;
}
- req_msg.pgid = fl->tgid;
+ req_msg.client_id = fl->client_id;
req_msg.fd = req.fd;
req_msg.offset = req.offset;
req_msg.vaddrin = req.vaddrin;
@@ -2215,7 +2217,7 @@ static const struct of_device_id fastrpc_match_table[] = {
static struct platform_driver fastrpc_cb_driver = {
.probe = fastrpc_cb_probe,
- .remove_new = fastrpc_cb_remove,
+ .remove = fastrpc_cb_remove,
.driver = {
.name = "qcom,fastrpc-cb",
.of_match_table = fastrpc_match_table,
@@ -2311,7 +2313,7 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
rmem = of_reserved_mem_lookup(rmem_node);
if (!rmem) {
err = -EINVAL;
- goto fdev_error;
+ goto err_free_data;
}
src_perms = BIT(QCOM_SCM_VMID_HLOS);
@@ -2332,7 +2334,7 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
data->unsigned_support = false;
err = fastrpc_device_register(rdev, data, secure_dsp, domains[domain_id]);
if (err)
- goto fdev_error;
+ goto err_free_data;
break;
case CDSP_DOMAIN_ID:
case CDSP1_DOMAIN_ID:
@@ -2340,15 +2342,15 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
/* Create both device nodes so that we can allow both Signed and Unsigned PD */
err = fastrpc_device_register(rdev, data, true, domains[domain_id]);
if (err)
- goto fdev_error;
+ goto err_free_data;
err = fastrpc_device_register(rdev, data, false, domains[domain_id]);
if (err)
- goto fdev_error;
+ goto err_deregister_fdev;
break;
default:
err = -EINVAL;
- goto fdev_error;
+ goto err_free_data;
}
kref_init(&data->refcount);
@@ -2365,17 +2367,17 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
err = of_platform_populate(rdev->of_node, NULL, NULL, rdev);
if (err)
- goto populate_error;
+ goto err_deregister_fdev;
return 0;
-populate_error:
+err_deregister_fdev:
if (data->fdevice)
misc_deregister(&data->fdevice->miscdev);
if (data->secure_fdevice)
misc_deregister(&data->secure_fdevice->miscdev);
-fdev_error:
+err_free_data:
kfree(data);
return err;
}
@@ -2505,4 +2507,4 @@ module_exit(fastrpc_exit);
MODULE_DESCRIPTION("Qualcomm FastRPC");
MODULE_LICENSE("GPL v2");
-MODULE_IMPORT_NS(DMA_BUF);
+MODULE_IMPORT_NS("DMA_BUF");
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-27 03:00:13 +0300