Re: [media] CODA960: Fails to allocate memory

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 





On 10/21/2014 03:16 PM, Jean-Michel Hautbois wrote:
Hi,

I am trying to use the CODA960 driver on a 3.18 kernel.
It seems pretty good when the module is probed (appart from the
unsupported firmware version) but when I try using the encoder, it
fails allocating dma buffers.

Here is the DT part I added :
&vpu {
     compatible = "fsl,imx6q-vpu";
     clocks = <&clks 168>, <&clks 140>, <&clks 142>;
     clock-names = "per", "ahb", "ocram";
     iramsize = <0x21000>;
     iram = <&ocram>;
     resets = <&src 1>;
     status = "okay";
};

When booting, I see :
[    4.410645] coda 2040000.vpu: Firmware code revision: 46056
[    4.416312] coda 2040000.vpu: Initialized CODA960.
[    4.421123] coda 2040000.vpu: Unsupported firmware version: 3.1.1
[    4.483577] coda 2040000.vpu: codec registered as /dev/video[0-1]

I can start v4l2-ctl and it shows that the device seems to be ok :
  v4l2-ctl --all -d /dev/video1
Driver Info (not using libv4l2):
         Driver name   : coda
         Card type     : CODA960
         Bus info      : platform:coda
         Driver version: 3.18.0
         Capabilities  : 0x84208000
                 Video Memory-to-Memory
                 Streaming
                 Extended Pix Format
                 Device Capabilities
         Device Caps   : 0x04208000
                 Video Memory-to-Memory
                 Streaming
                 Extended Pix Format
Priority: 2
Format Video Capture:
         Width/Height  : 1920/1088
         Pixel Format  : 'YU12'
         Field         : None
         Bytes per Line: 1920
         Size Image    : 3133440
         Colorspace    : HDTV and modern devices (ITU709)
         Flags         :
Format Video Output:
         Width/Height  : 1920/1088
         Pixel Format  : 'H264'
         Field         : None
         Bytes per Line: 0
         Size Image    : 1048576
         Colorspace    : HDTV and modern devices (ITU709)
         Flags         :
Selection: compose, Left 0, Top 0, Width 1920, Height 1088
Selection: compose_default, Left 0, Top 0, Width 1920, Height 1088
Selection: compose_bounds, Left 0, Top 0, Width 1920, Height 1088
Selection: compose_padded, Left 0, Top 0, Width 1920, Height 1088
Selection: crop, Left 0, Top 0, Width 1920, Height 1088
Selection: crop_default, Left 0, Top 0, Width 1920, Height 1088
Selection: crop_bounds, Left 0, Top 0, Width 1920, Height 1088

User Controls

                 horizontal_flip (bool)   : default=0 value=0
                   vertical_flip (bool)   : default=0 value=0

Codec Controls

                  video_gop_size (int)    : min=1 max=60 step=1
default=16 value=16
                   video_bitrate (int)    : min=0 max=32767000 step=1
default=0 value=0
     number_of_intra_refresh_mbs (int)    : min=0 max=8160 step=1
default=0 value=0
            sequence_header_mode (menu)   : min=0 max=1 default=1 value=1
        maximum_bytes_in_a_slice (int)    : min=1 max=1073741823 step=1
default=500 value=500
        number_of_mbs_in_a_slice (int)    : min=1 max=1073741823 step=1
default=1 value=1
       slice_partitioning_method (menu)   : min=0 max=2 default=0 value=0
           h264_i_frame_qp_value (int)    : min=0 max=51 step=1
default=25 value=25
           h264_p_frame_qp_value (int)    : min=0 max=51 step=1
default=25 value=25
           h264_maximum_qp_value (int)    : min=0 max=51 step=1
default=51 value=51
   h264_loop_filter_alpha_offset (int)    : min=0 max=15 step=1 default=0 value=0
    h264_loop_filter_beta_offset (int)    : min=0 max=15 step=1 default=0 value=0
           h264_loop_filter_mode (menu)   : min=0 max=1 default=0 value=0
          mpeg4_i_frame_qp_value (int)    : min=1 max=31 step=1 default=2 value=2
          mpeg4_p_frame_qp_value (int)    : min=1 max=31 step=1 default=2 value=2
                 horizontal_flip (bool)   : default=0 value=0
                   vertical_flip (bool)   : default=0 value=0




But when I try to get a file outputed, it fails :

v4l2-ctl -d1 --stream-out-mmap --stream-mmap --stream-to x.raw
[ 1197.292256] coda 2040000.vpu: dma_alloc_coherent of size 1048576 failed
VIDIOC_REQBUFS: failed: Cannot allocate memory

Did I forget to do something ?

I assume this is physically contiguous memory. Do you have that much phys. cont. memory
available at all? If the memory is fragmented you won't be able to get it.

Use cma (contiguous memory allocator). You probably have to do very little expect add
a kernel option to assign enough memory for these buffers.

Regards,

	Hans
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Input]     [Video for Linux]     [Gstreamer Embedded]     [Mplayer Users]     [Linux USB Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [Yosemite Backpacking]
  Powered by Linux