Linux/AM5728: Dual camera demo CMEM error

boycchi

Expert 1005 points

Part Number: AM5728

Tool/software: Linux

hi,

I am using the dual_camera demo,and there is something wrong when I allocate the cmem buf.

When my two camera is 720p,the allocation is running correctly.

But since I change 720p to 1080p,the bad allocation appears:

[ 168.529393] CMEMK Error: ioctl: failed to allocate heap buffer of size 0x3f5000

[ 168.541747] CMEMK Error: get_phys: Unable to find phys addr for 0x0

[ 168.555045] CMEMK Error: get_phys: get_user_pages() failed: -14

[ 168.565168] CMEMK Error: FREEHEAP: Failed to convert virtual 0x0 to physical

CMEM Error: allocHeap: ioctl CMEM_IOCALLOCHEAPCACHED failed: -1
allocating cmem buffer of size 0x3f4800CMEM allocation failed
CMEM Error: free: failed to free 0
Cannot export CMEM buffer
ERROR:get_vid_buffers_new:400: allocation failed

How do i fix this heap issue? I've viewed some threads e2e.ti.com/.../660967,someone have faced the similar issue as mine.

Please give me some insight

over 8 years ago

0 Margarita Gashova over 8 years ago

TI__Guru* 80190 points

Hello,

I would recommend you to check this wiki:
downloads.ti.com/.../multiprocess.html

I see that in this thread the issue is discussing also:
e2e.ti.com/.../659808
You could try Manisha's suggestion.

BR
Margarita

0 boycchi over 8 years ago in reply to Margarita Gashova

Expert 1005 points

Hello,
Thanks for your reply,I've checked both suggestion but still can't figure out a way to solve my problem,could u give me a specific way?
As for your recommendation,I 've tried to increase linux-shmem-size-KB from 128 to 256,however,the heap issue remains.
root@am57xx-evm:~# ti-mctd
[ 2040.531084] CMEMK Error: ioctl: no heap available in block 1
CMEM Error: allocHeap: ioctl CMEM_IOCALLOCHEAPCACHED failed: -1
TIOCL FATAL: Unable to allocate On-chip CMEM from 0xaf000000

0 Margarita Gashova over 8 years ago in reply to boycchi

TI__Guru* 80190 points

Hello,

I would recommend you to take a look into this document:
www.ti.com/.../sprac60.pdf

BR
Margarita

0 boycchi over 8 years ago in reply to Margarita Gashova

Expert 1005 points

Hello,
I've checked the ,and found there is a description about General Purpose Heaps.Could u tell me how to reduce the amount of CMEM memory granted to the pools?
Another question,the dual_camera demo us the CMEM_CMABLOCKID as CMEM_BLOCKID according to the cmem.c,how can I configure the cma block?
BR

0 Margarita Gashova over 8 years ago in reply to boycchi

TI__Guru* 80190 points

Hello,

If I remember right this was working on PSDK 4.02 refer this thread:
e2e.ti.com/.../659808
If you are not using 4.02, please try on it.

BR
Margarita

0 boycchi over 8 years ago in reply to Margarita Gashova

Expert 1005 points

Hello,
Problem solved e2e.ti.com/.../659808 this thread helps a lot

0 Margarita Gashova over 8 years ago in reply to boycchi

TI__Guru* 80190 points

Hello,

I am glad that this issue is solved.
Thank you for verifying the thread.

BR
Margarita

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Linux/AM5728: Dual camera demo CMEM error