FW: Linux 2.6.39.4 in a AT91SAM9M10G45-EK 10 Mbytes dma buffer allocatiion

[Marcio Campos de Lima]

Hi
I am running Linux 2.6.39.4 in a AT91SAM9M10G45-EK platfarm. I need to
allocate 10 Mbytes dma buffer to capture an image from a CMOS sensor. The
board has 128Mbytes of total memory and 110 Mbytes of free memory. Can
anybody help me?
Thanks
MArcio

at mm/page_alloc.c:2033 __alloc_pages_nodemask+0x140/0x5f8)
ht      = 19Modules linked
in:44;                                               
                                                                            
    
fmt.fmt.pix.[] (unwind_backtrace+0x0/0xe4) from [] (warn_sl)
pixelformat [] (warn_slowpath_common+0x4c/0x64) from [] (wa)
=30314742;                                                                  
    
f[] (warn_slowpath_null+0x18/0x1c) from [] (__alloc_pages_n)
mt.fmt.pix.fiel[] (__alloc_pages_nodemask+0x140/0x5f8) from [d       =
c72b2[] (__dma_alloc+0x94/0x2d8) from [] (dma_all)
cc8                                                                         
    
MARCIO[] (dma_alloc_coherent+0x54/0x60) from [] (vb2_dma_co)
: init_mmap: i[] (vb2_dma_contig_alloc+0x38/0xb4) from [] ()
nit                                                                         
    
[] (vb2_reqbufs+0x3b4/0x750) from [] (soc_camera_reqbufs+0x)
[] (soc_camera_reqbufs+0xbc/0x134) from [] (__video_do_ioct)
[] (__video_do_ioctl+0x1de0/0x4a24) from [] (video_usercopy)
[] (video_usercopy+0x358/0x48c) from [] (v4l2_ioctl+0x68/0x)
[] (v4l2_ioctl+0x68/0x114) from [] (vfs_ioctl+0x20/0x3c)    
[] (vfs_ioctl+0x20/0x3c) from [] (do_vfs_ioctl+0x520/0x578) 
[] (do_vfs_ioctl+0x520/0x578) from [] (sys_ioctl+0x34/0x54) 
[] (sys_ioctl+0x34/0x54) from [] (ret_fast_syscall+0x0/0x2c)
---[ end trace acfd933d374f6f12
]---                                            
atmel_isi atmel_isi.0: dma_alloc_coherent of size 10077696
failed               
MARCIO: __vb2_queue_alloc
ret=-12                                               
MARCIO: __vb2_queue_alloc
q->num_buffers=0                                      
MARCIO: vb2_reqbufs req->count=2 ret=0
num_buffers=1                            
MARCIO: vb2_reqbufs req->count=2 num_buffers=1
ret=0                            
MARCIO:vb2_reqbufs soc_camera_reqbufs ret=-12 icd->vb2_vidq=1 
p=1              
MARCIO:soc_camera_reqbufs
ret=-12                                               
VIDIOC_REQBUFS error 12, Out of memory