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Remoteproc SHM driver
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CaroloCup
Remoteproc SHM driver
Commits
c8f89d3e
Commit
c8f89d3e
authored
5 years ago
by
Andreas Werner
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fix author
parent
eb5090ac
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1 changed file
remoteproc-shm.c
+10
-10
10 additions, 10 deletions
remoteproc-shm.c
with
10 additions
and
10 deletions
remoteproc-shm.c
+
10
−
10
View file @
c8f89d3e
...
...
@@ -66,7 +66,7 @@ static void rproc_shm_recv_message(struct mbox_client *client, void *message)
struct
rproc_file
*
entry
;
struct
list_head
*
pos
;
dev_
info
(
client
->
dev
,
"rproc_shm_recv_message: %p
\n
"
,
message
);
dev_
dbg
(
client
->
dev
,
"rproc_shm_recv_message: %p
\n
"
,
message
);
if
(
dev
->
async_queue
)
kill_fasync
(
&
dev
->
async_queue
,
SIGIO
,
POLL_IN
);
...
...
@@ -91,7 +91,7 @@ static void rproc_shm_message_sent(struct mbox_client *client, void *message, in
dev_warn
(
client
->
dev
,
"Client: Message could not be sent: %d
\n
"
,
r
);
else
dev_
info
(
client
->
dev
,
"Client: Message sent
\n
"
);
dev_
dbg
(
client
->
dev
,
"Client: Message sent
\n
"
);
}
/**
...
...
@@ -147,7 +147,7 @@ static ssize_t rproc_shm_write(struct file *filp,
return
-
EINVAL
;
}
addr
=
dev
->
shm_addr
+
(
*
ppos
);
dev_
info
(
dev
->
dev
,
"%p: rproc_shm_write: addr: 0x%lx"
,
filp
,
(
uintptr_t
)
addr
);
dev_
dbg
(
dev
->
dev
,
"%p: rproc_shm_write: addr: 0x%lx"
,
filp
,
(
uintptr_t
)
addr
);
ret
=
copy_from_user
(
addr
,
userbuf
,
count
);
if
(
ret
<
0
)
...
...
@@ -176,7 +176,7 @@ static ssize_t rproc_shm_read(struct file *filp, char __user *userbuf,
if
(
count
>
(
dev
->
size
-
(
*
ppos
)))
count
=
dev
->
size
-
(
*
ppos
);
addr
=
dev
->
shm_addr
+
(
*
ppos
);
dev_
info
(
dev
->
dev
,
"%p: rproc_shm_read: ppos: %llu addr: 0x%lx"
,
filp
,
(
*
ppos
),(
uintptr_t
)
addr
);
dev_
dbg
(
dev
->
dev
,
"%p: rproc_shm_read: ppos: %llu addr: 0x%lx"
,
filp
,
(
*
ppos
),(
uintptr_t
)
addr
);
ret
=
copy_to_user
(
userbuf
,
addr
,
count
);
if
(
ret
<
0
)
...
...
@@ -201,14 +201,14 @@ static int rproc_shm_mmap(struct file *filp, struct vm_area_struct *vma)
unsigned
long
long
pfn
=
(
dev
->
dma_handle
+
vma
->
vm_pgoff
)
>>
PAGE_SHIFT
;
dev_
info
(
dev
->
dev
,
"rproc_shm_mmap"
);
dev_
dbg
(
dev
->
dev
,
"rproc_shm_mmap"
);
/* set page protection to non cached */
vma
->
vm_page_prot
=
phys_mem_access_prot
(
filp
,
pfn
,
len
,
vma
->
vm_page_prot
);
vma
->
vm_page_prot
=
pgprot_noncached
(
vma
->
vm_page_prot
);
/* debug */
dev_
info
(
dev
->
dev
,
"PAGE_OF: %lu"
,
vma
->
vm_pgoff
);
dev_
dbg
(
dev
->
dev
,
"PAGE_OF: %lu"
,
vma
->
vm_pgoff
);
ret
=
remap_pfn_range
(
vma
,
vma
->
vm_start
,
pfn
,
len
,
vma
->
vm_page_prot
);
...
...
@@ -231,7 +231,7 @@ static int rproc_shm_fasync(int fd, struct file *filp, int mode)
{
struct
rproc_file
*
file
=
(
struct
rproc_file
*
)
filp
->
private_data
;
struct
rproc_shm_device
*
dev
=
file
->
dev
;
dev_
info
(
dev
->
dev
,
"rproc_shm_fasync"
);
dev_
dbg
(
dev
->
dev
,
"rproc_shm_fasync"
);
return
fasync_helper
(
fd
,
filp
,
mode
,
&
dev
->
async_queue
);
}
...
...
@@ -248,7 +248,7 @@ static int rproc_shm_fsync(struct file *filp, loff_t start, loff_t end, int data
{
struct
rproc_file
*
file
=
(
struct
rproc_file
*
)
filp
->
private_data
;
struct
rproc_shm_device
*
dev
=
file
->
dev
;
dev_
info
(
dev
->
dev
,
"rproc_shm_fsync"
);
dev_
dbg
(
dev
->
dev
,
"rproc_shm_fsync"
);
if
(
mbox_send_message
(
dev
->
mbox_channel
,
(
void
*
)
1
)
<
0
)
dev_err
(
dev
->
dev
,
"Failed to send message via mailbox
\n
"
);
...
...
@@ -267,7 +267,7 @@ static unsigned int rproc_shm_poll(struct file *filp, struct poll_table_struct *
struct
rproc_shm_device
*
dev
=
file
->
dev
;
unsigned
int
mask
=
0
;
dev_
info
(
dev
->
dev
,
"%p: rproc_shm_poll"
,
filp
);
dev_
dbg
(
dev
->
dev
,
"%p: rproc_shm_poll"
,
filp
);
down
(
&
dev
->
sem
);
poll_wait
(
filp
,
&
dev
->
wait_queue
,
poll_table
);
...
...
@@ -495,5 +495,5 @@ static struct platform_driver rproc_shm_driver = {
module_platform_driver
(
rproc_shm_driver
);
MODULE_DESCRIPTION
(
"RPROC Shared Memory Driver"
);
MODULE_AUTHOR
(
"Wilhem Alexander, Wissfeld Aljoscha
"
,
"
Andreas Werner <kernel@andy89.org>"
);
MODULE_AUTHOR
(
"Wilhem Alexander, Wissfeld Aljoscha, Andreas Werner <kernel@andy89.org>"
);
MODULE_LICENSE
(
"GPL v2"
);
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