Add IMP

5 files changed, 875 insertions, 0 deletions

diff --git a/meta-rcar-gen3-adas/recipes-kernel/kernel-module-cmemdrv/files/GPL-COPYING b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-cmemdrv/files/GPL-COPYING
new file mode 100644
index 0000000..d159169
--- /dev/null
+++ b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-cmemdrv/files/GPL-COPYING
@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
diff --git a/meta-rcar-gen3-adas/recipes-kernel/kernel-module-cmemdrv/files/MIT-COPYING b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-cmemdrv/files/MIT-COPYING
new file mode 100644
index 0000000..28e2a15
--- /dev/null
+++ b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-cmemdrv/files/MIT-COPYING
@@ -0,0 +1,41 @@
+
+This software is Copyright (C) 2013 Renesas Electronics Corporation
+
+You may use, distribute and copy this software under the terms of the MIT
+license displayed below.
+
+-----------------------------------------------------------------------------
+
+ Permission is hereby granted, free of charge, to any person obtaining a copy
+ of this software and associated documentation files (the "Software"), to deal
+ in the Software without restriction, including without limitation the rights
+ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+
+ The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+
+ Alternatively, the contents of this file may be used under the terms of
+ the GNU General Public License Version 2 ("GPL") in which case the provisions
+ of GPL are applicable instead of those above.
+
+ If you wish to allow use of your version of this file only under the terms of
+ GPL, and not to allow others to use your version of this file under the terms
+ of the MIT license, indicate your decision by deleting the provisions above
+ and replace them with the notice and other provisions required by GPL as set
+ out in the file called "GPL-COPYING" included in this distribution. If you do
+ not delete the provisions above, a recipient may use your version of this file
+ under the terms of either the MIT license or GPL.
+
+-----------------------------------------------------------------------------
+
+ EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
+ PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR
+ COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+-----------------------------------------------------------------------------
diff --git a/meta-rcar-gen3-adas/recipes-kernel/kernel-module-cmemdrv/files/Makefile b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-cmemdrv/files/Makefile
new file mode 100644
index 0000000..2e26bfb
--- /dev/null
+++ b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-cmemdrv/files/Makefile
@@ -0,0 +1,14 @@
+obj-m := cmemdrv.o
+
+SRC := $(shell pwd)
+
+all:
+	$(MAKE) -C $(KERNEL_SRC) M=$(SRC)
+
+modules_install:
+	$(MAKE) -C $(KERNEL_SRC) M=$(SRC) modules_install
+
+clean:
+	rm -f *.o *~ core .depend .*.cmd *.ko *.mod.c
+	rm -f Module.markers Module.symvers modules.order
+	rm -rf .tmp_versions Modules.symvers
diff --git a/meta-rcar-gen3-adas/recipes-kernel/kernel-module-cmemdrv/files/cmemdrv.c b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-cmemdrv/files/cmemdrv.c
new file mode 100644
index 0000000..a5d4363
--- /dev/null
+++ b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-cmemdrv/files/cmemdrv.c
@@ -0,0 +1,457 @@
+/*************************************************************************/ /*
+ Memory Driver (kernel module)
+
+ Copyright (C) 2015 - 2017 Renesas Electronics Corporation
+
+ License        Dual MIT/GPLv2
+
+ The contents of this file are subject to the MIT license as set out below.
+
+ Permission is hereby granted, free of charge, to any person obtaining a copy
+ of this software and associated documentation files (the "Software"), to deal
+ in the Software without restriction, including without limitation the rights
+ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+
+ The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+
+ Alternatively, the contents of this file may be used under the terms of
+ the GNU General Public License Version 2 ("GPL") in which case the provisions
+ of GPL are applicable instead of those above.
+
+ If you wish to allow use of your version of this file only under the terms of
+ GPL, and not to allow others to use your version of this file under the terms
+ of the MIT license, indicate your decision by deleting the provisions above
+ and replace them with the notice and other provisions required by GPL as set
+ out in the file called "GPL-COPYING" included in this distribution. If you do
+ not delete the provisions above, a recipient may use your version of this file
+ under the terms of either the MIT license or GPL.
+
+ This License is also included in this distribution in the file called
+ "MIT-COPYING".
+
+ EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
+ PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR
+ COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ GPLv2:
+ If you wish to use this file under the terms of GPL, following terms are
+ effective.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; version 2 of the License.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/ /*************************************************************************/
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/fs.h>
+#include <asm/uaccess.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/of_device.h>
+
+#define MAX_AREA_NUM 4
+#define DEFAULT_AREA_SIZE (16 * 1024 * 1024)
+
+#define PARAM_SET     1
+#define M_LOCK        3
+#define M_UNLOCK      4
+#define GET_PHYS_ADDR 5
+#define M_ALLOCATE    6
+#define M_UNALLOCATE  7
+#define TRY_CONV      8
+
+#define IOCTL_FROM_IMP_TO_CPU 0
+#define IOCTL_FROM_CPU_TO_IMP 1
+
+struct mem_area_data {
+	struct device *dev;
+	size_t size;
+	void *virt_ptr;
+	dma_addr_t phys_addr;
+};
+
+struct mem_access_data {
+	struct mem_area_data* area;
+	int start_offset;
+	int offset;
+	int width;
+	int height;
+	int stride;
+	int locked;
+	int tl;
+};
+
+static unsigned int bsize_count;
+static unsigned long bsize[MAX_AREA_NUM];
+module_param_array(bsize, ulong, &bsize_count, S_IRUGO);
+static int cached = 1;
+module_param(cached, int, S_IRUGO);
+
+#ifdef CFG_USE_FPGA
+static unsigned long cfg_bsize = 0;
+module_param(cfg_bsize, ulong, S_IRUGO);
+#endif
+
+static unsigned int cmem_major = 88;		// 0:auto
+module_param(cmem_major, uint, S_IRUGO);
+
+static struct class *cmem_class = NULL;
+static struct mem_area_data *cmem_areas[MAX_AREA_NUM];
+
+static int cv_v_to_p(unsigned long vaddr, unsigned long *paddr)
+{
+	struct vm_area_struct *vma;
+	unsigned long start, offset;
+	unsigned long pfn;
+	int ret;
+
+	*paddr = 0;
+
+	vma = find_vma(current->active_mm, vaddr);
+	if (vma == NULL)
+		return -EINVAL;
+
+	start = vaddr & PAGE_MASK;
+	ret = follow_pfn(vma, start, &pfn);
+	if (ret < 0)
+		return ret;
+
+	offset = offset_in_page(vaddr);
+	*paddr = (pfn << PAGE_SHIFT) + offset;
+
+	return 0;
+}
+
+static void do_tl(u64 *src, u64 *dst, unsigned int height, unsigned int step)
+{
+	unsigned int i;
+	int j;
+	unsigned int yaddr;
+	u64 *isrc, *idst, *isrcp, *idstp;
+
+	for (j = 0; j < height ; j += 2) {
+		yaddr = (j & ~0x1f) * step | ((j & 0x1f) << 7);
+		isrc = src + (yaddr >> 3);
+		idst = dst + (j * step >> 3);
+		for (i = 0; i < step >> 3; i += 16) {
+			idstp = idst + i;
+			isrcp = isrc + (i << 5);
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+
+			idstp = idst + i + (step >> 3);
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+			*idstp++ = *isrcp++;
+
+			//idst[i] = isrc[((i >> 4) << 9) + (i & 0xf)];
+		}
+	}
+}
+
+static ssize_t dev_read(struct file *filep, char *buf, size_t len, loff_t *ppos)
+{
+	size_t count;
+	struct mem_access_data *p = filep->private_data;
+
+	if (p->tl) {
+		do_tl( (u64 *)(p->area->virt_ptr + p->offset + p->start_offset),
+		       (u64 *)buf, p->height, p->stride );
+		count = len;
+	} else {
+		count = copy_to_user(buf, p->area->virt_ptr + p->offset + p->start_offset, len);
+	}
+
+	return count;
+}
+
+static ssize_t dev_write(struct file *filep, const char *buf, size_t len, loff_t *ppos)
+{
+	size_t count;
+	struct mem_access_data *p = filep->private_data;
+
+	count = copy_from_user(p->area->virt_ptr + p->offset + p->start_offset, buf, len);
+
+	return count;
+}
+
+static long dev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
+{
+	struct mem_access_data *p = filep->private_data;
+	struct device *dev = p->area->dev;
+	u32 offset, size, dir;
+
+	switch (cmd) {
+	case PARAM_SET :
+		p->width  = ((unsigned int *)arg)[0];
+		p->height = ((unsigned int *)arg)[1];
+		p->stride = ((unsigned int *)arg)[2];
+		p->tl     = ((unsigned int *)arg)[3];
+		p->offset = ((unsigned int *)arg)[4];
+		break;
+	case M_ALLOCATE :
+		break;
+	case M_LOCK :
+		if (cached) {
+			offset = ((unsigned int *)arg)[0];
+			size   = ((unsigned int *)arg)[1];
+			dir    = ((unsigned int *)arg)[2];
+			if (dir == IOCTL_FROM_IMP_TO_CPU)
+				dma_sync_single_for_device(dev, p->area->phys_addr + p->start_offset + offset, size, DMA_FROM_DEVICE);
+			else
+				dma_sync_single_for_device(dev, p->area->phys_addr + p->start_offset + offset, size, DMA_TO_DEVICE);
+		}
+		break;
+	case M_UNLOCK :
+		if (cached) {
+			offset = ((unsigned int *)arg)[0];
+			size   = ((unsigned int *)arg)[1];
+			dir    = ((unsigned int *)arg)[2];
+			if (dir == IOCTL_FROM_IMP_TO_CPU)
+				dma_sync_single_for_cpu(dev, p->area->phys_addr + p->start_offset + offset, size, DMA_FROM_DEVICE);
+			else
+				dma_sync_single_for_cpu(dev, p->area->phys_addr + p->start_offset + offset, size, DMA_TO_DEVICE);
+		}
+		break;
+	case M_UNALLOCATE :
+		break;
+	case GET_PHYS_ADDR :
+		*((unsigned int *)arg) = p->area->phys_addr;
+		break;
+	case TRY_CONV :
+		cv_v_to_p( ( (unsigned long *)arg )[0], (unsigned long *)arg + 1);
+		break;
+	default:
+		dev_warn(dev, "## unknown ioctl command %d\n", cmd);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int dev_mmap(struct file *filep, struct vm_area_struct *vma)
+{
+	struct mem_access_data *p = filep->private_data;
+	unsigned long off;
+	unsigned long start;
+
+	if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
+		return -EINVAL;
+
+	off = vma->vm_pgoff << PAGE_SHIFT;
+	start = p->area->phys_addr;
+
+	if ((vma->vm_end - vma->vm_start + off) > p->area->size)
+		return -EINVAL;
+
+	off += start;
+	vma->vm_pgoff = off >> PAGE_SHIFT;
+	vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
+	if (!cached)
+		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
+	return remap_pfn_range( vma,
+	                        vma->vm_start,
+	                        vma->vm_pgoff,
+	                        vma->vm_end - vma->vm_start,
+	                        vma->vm_page_prot ) ;
+}
+
+static int dev_open(struct inode *inode, struct file *filep)
+{
+	struct mem_access_data *mem_access_p;
+	int minor = iminor(inode);
+	struct mem_area_data* area = cmem_areas[minor];
+
+	mem_access_p = kzalloc(sizeof(*mem_access_p), GFP_KERNEL);
+	if (!mem_access_p)
+		return -ENOMEM;
+
+	dev_dbg(area->dev, "Device Open\n");
+	mem_access_p->area = area;
+	filep->private_data = mem_access_p;
+
+	return 0;
+}
+
+static int dev_rls(struct inode *inode, struct file *filep)
+{
+	struct mem_access_data *mem_access_p = filep->private_data;
+	kfree(mem_access_p);
+	return 0;
+}
+
+static struct file_operations fops = {
+	.owner          = THIS_MODULE,
+	.read           = dev_read,
+	.write          = dev_write,
+	.unlocked_ioctl = dev_ioctl,
+	.compat_ioctl   = dev_ioctl,
+	.mmap           = dev_mmap,
+	.open           = dev_open,
+	.release        = dev_rls,
+};
+
+static int cmemdrv_create_device(dev_t devt, size_t size)
+{
+	int ret;
+	struct mem_area_data *area;
+	struct device *dev;
+	void *virt_b_ptr;
+	dma_addr_t phy_b_addr;
+
+	dev = device_create(cmem_class, NULL, devt, NULL, "cmem%d", MINOR(devt));
+	if (IS_ERR(dev)) {
+		pr_err("cmem: unable to create device cmem%d\n", MINOR(devt));
+		return PTR_ERR(dev);
+	}
+
+	area = devm_kzalloc(dev, sizeof(*area), GFP_KERNEL);
+	if (!area) {
+		ret = -ENOMEM;
+		goto err;
+	}
+	area->dev = dev;
+
+#ifdef CONFIG_ARM64
+	{
+		struct device_node *np;
+		np = of_find_compatible_node(NULL, NULL, "shared-dma-pool");
+		of_dma_configure(dev, np);
+	}
+#endif
+
+	virt_b_ptr = dmam_alloc_coherent(dev, size + PAGE_SIZE, &phy_b_addr, GFP_KERNEL);
+	if (!virt_b_ptr) {
+		dev_err(dev, "Memory allocation failed.. (size:0x%zx)\n", size);
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	area->virt_ptr = PTR_ALIGN(virt_b_ptr, PAGE_SIZE);
+	area->phys_addr = phy_b_addr + (area->virt_ptr - virt_b_ptr);
+	area->size = size;
+	cmem_areas[MINOR(devt)] = area;
+	dev_notice(dev, "Memory allocated.. 0x%08lx (size:0x%zx)\n", (unsigned long)area->phys_addr, size);
+
+	return 0;
+
+err:
+	device_destroy(cmem_class, devt);
+	return ret;
+}
+
+static int __init cmemdrv_init(void)
+{
+	int i = 0;
+	int ret;
+
+	if (bsize_count == 0)
+		bsize[bsize_count++] = DEFAULT_AREA_SIZE;	/* add default area */
+
+#ifdef CFG_USE_FPGA
+	if (cfg_bsize && bsize_count < MAX_AREA_NUM)
+		bsize[bsize_count++] = cfg_bsize;	/* for compatibility */
+#endif
+
+	ret = register_chrdev(cmem_major, "CMem", &fops);
+	if (ret < 0) {
+		pr_err("cmem: unable to get major %d\n", cmem_major);
+		return ret;
+	}
+	if (cmem_major == 0)
+		cmem_major = ret;
+
+	cmem_class = class_create(THIS_MODULE, "cmem");
+	if (IS_ERR(cmem_class)) {
+		pr_err("cmem: unable to create class\n");
+		ret = PTR_ERR(cmem_class);
+		goto err1;
+	}
+
+	for (i = 0; i < bsize_count; i++) {
+		ret = cmemdrv_create_device(MKDEV(cmem_major, i), bsize[i]);
+		if (ret < 0)
+			goto err2;
+	}
+
+	return 0;
+
+err2:
+	for (i--; i >= 0; i--)
+		device_destroy(cmem_class, MKDEV(cmem_major, i));
+
+	class_destroy(cmem_class);
+err1:
+	unregister_chrdev(cmem_major, "CMem");
+	return ret;
+}
+
+static void __exit cmemdrv_exit(void)
+{
+	int i;
+	for (i = 0; i < bsize_count; i++)
+		device_destroy(cmem_class, MKDEV(cmem_major, i));
+
+	class_destroy(cmem_class);
+	unregister_chrdev(cmem_major, "CMem");
+}
+
+module_init(cmemdrv_init)
+module_exit(cmemdrv_exit)
+
+MODULE_AUTHOR("RenesasElectronicsCorp.");
+MODULE_DESCRIPTION("Userspace I/O driver for image memory");
+MODULE_LICENSE("GPL v2");
diff --git a/meta-rcar-gen3-adas/recipes-kernel/kernel-module-cmemdrv/kernel-module-cmemdrv_0.1.bb b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-cmemdrv/kernel-module-cmemdrv_0.1.bb
new file mode 100644
index 0000000..c460c6f
--- /dev/null
+++ b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-cmemdrv/kernel-module-cmemdrv_0.1.bb
@@ -0,0 +1,24 @@
+SUMMARY = "Cache Memory Primitive Module"
+LICENSE = "GPLv2 & MIT"
+LIC_FILES_CHKSUM = " \
+    file://GPL-COPYING;md5=b234ee4d69f5fce4486a80fdaf4a4263 \
+    file://MIT-COPYING;md5=fea016ce2bdf2ec10080f69e9381d378 \
+    "
+
+inherit module
+
+PR = "r0"
+PV = "0.1"
+
+SRC_URI = " \
+    file://Makefile \
+    file://cmemdrv.c \
+    file://GPL-COPYING \
+    file://MIT-COPYING \
+    "
+
+S = "${WORKDIR}"
+
+KERNEL_MODULE_AUTOLOAD += "cmemdrv"
+KERNEL_MODULE_PROBECONF += "cmemdrv"
+module_conf_cmemdrv = "options cmemdrv bsize=0x7000000"