Skip to content
Projects
Groups
Snippets
Help
Loading...
Help
Submit feedback
Contribute to GitLab
Sign in
Toggle navigation
L
linux-elphel
Project
Project
Details
Activity
Releases
Cycle Analytics
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Charts
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Charts
Commits
Open sidebar
Elphel
linux-elphel
Commits
d595858f
Commit
d595858f
authored
May 07, 2015
by
YuriNenakhov
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
Cache flusher initial support
parent
1436d5e5
Changes
1
Hide whitespace changes
Inline
Side-by-side
Showing
1 changed file
with
17 additions
and
1 deletion
+17
-1
elphel393-mem.c
src/drivers/elphel/elphel393-mem.c
+17
-1
No files found.
src/drivers/elphel/elphel393-mem.c
View file @
d595858f
...
...
@@ -7,9 +7,12 @@
#include <linux/dma-mapping.h>
#include <linux/dma-direction.h>
#include <asm/dma-mapping.h>
#include <asm/outercache.h>
#include <asm/cacheflush.h>
#define SYSFS_PERMISSIONS 0644
/* default permissions for sysfs files */
#define SYSFS_READONLY 0444
#define SYSFS_WRITEONLY 0222
static
ssize_t
get_paddr
(
struct
device
*
dev
,
struct
device_attribute
*
attr
,
char
*
buf
);
...
...
@@ -66,19 +69,32 @@ static void __exit elphelmem_exit(void)
static
ssize_t
get_paddr
(
struct
device
*
dev
,
struct
device_attribute
*
attr
,
char
*
buf
)
{
return
sprintf
(
buf
,
"
0x
%x
\n
"
,
(
u32
)
elphel_buf
.
paddr
);
return
sprintf
(
buf
,
"%x
\n
"
,
(
u32
)
elphel_buf
.
paddr
);
}
static
ssize_t
get_size
(
struct
device
*
dev
,
struct
device_attribute
*
attr
,
char
*
buf
)
{
return
sprintf
(
buf
,
"%u
\n
"
,
elphel_buf
.
size
);
}
static
ssize_t
get_cache
(
struct
device
*
dev
,
struct
device_attribute
*
attr
,
char
*
buf
)
{
return
sprintf
(
buf
,
"Write in this file to flush L1 and L2 caches.
\n
"
);
}
static
ssize_t
flush_cache
(
struct
device
*
dev
,
struct
device_attribute
*
attr
,
const
char
*
buf
,
size_t
count
)
{
__cpuc_flush_dcache_area
(
elphel_buf
.
vaddr
,
elphel_buf
.
size
);
outer_clean_range
(
elphel_buf
.
vaddr
,
elphel_buf
.
size
);
outer_cache
.
inv_range
(
elphel_buf
.
vaddr
,
elphel_buf
.
size
);
return
count
;
}
static
DEVICE_ATTR
(
buffer_address
,
SYSFS_PERMISSIONS
&
SYSFS_READONLY
,
get_paddr
,
NULL
);
static
DEVICE_ATTR
(
buffer_pages
,
SYSFS_PERMISSIONS
&
SYSFS_READONLY
,
get_size
,
NULL
);
static
DEVICE_ATTR
(
buffer_flush
,
SYSFS_PERMISSIONS
,
get_cache
,
flush_cache
);
static
struct
attribute
*
root_dev_attrs
[]
=
{
&
dev_attr_buffer_address
.
attr
,
&
dev_attr_buffer_pages
.
attr
,
&
dev_attr_buffer_flush
.
attr
,
NULL
};
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment