DM8168: Pointer to the frame buffer addr[0][0] on slave processor (on DSP side)

Marat Shchuchinsky

Hello TI teams,

I have a problem with dvr_rdk for DM8168 when my algorithm runs on slave (DSP) processor.

DSP_ALG link connected to chain by DSP_IPC_FRAMES_IN link and recieves captured video - read from input video queue buffers list and start

process these buffers. I tried to print pointers to the frame buffers and received result which I can not explain:

[c6xdsp ] [CH00] pInFrame->addr[0][0] = 1200dc0

[c6xdsp ] [CH01] pInFrame->addr[0][0] = 903c80

[c6xdsp ] [CH05] pInFrame->addr[0][0] = 12018c0

[c6xdsp ] [CH11] pInFrame->addr[0][0] = 1203440

[c6xdsp ] [CH14] pInFrame->addr[0][0] = 2d00b00

[c6xdsp ] [CH04] pInFrame->addr[0][0] = 9023c0

[c6xdsp ] [CH06] pInFrame->addr[0][0] = 902680

[c6xdsp ] [CH07] pInFrame->addr[0][0] = 1e60

[c6xdsp ] [CH08] pInFrame->addr[0][0] = 2401b80

[c6xdsp ] [CH09] pInFrame->addr[0][0] = 1b01080

[c6xdsp ] [CH12] pInFrame->addr[0][0] = 24039c0

[c6xdsp ] [CH13] pInFrame->addr[0][0] = 2400dc0

[c6xdsp ] [CH15] pInFrame->addr[0][0] = 2403440

[c6xdsp ] [CH00] pInFrame->addr[0][0] = 900000

[c6xdsp ] [CH01] pInFrame->addr[0][0] = 903700

[c6xdsp ] [CH02] pInFrame->addr[0][0] = 31a0

[c6xdsp ] [CH03] pInFrame->addr[0][0] = 900dc0

[c6xdsp ] [CH10] pInFrame->addr[0][0] = 1b01600

[c6xdsp ] [CH05] pInFrame->addr[0][0] = 1201080

[c6xdsp ] [CH11] pInFrame->addr[0][0] = 2403180

[c6xdsp ] [CH14] pInFrame->addr[0][0] = 2d002c0

[c6xdsp ] [CH02] pInFrame->addr[0][0] = 18e0

[c6xdsp ] [CH03] pInFrame->addr[0][0] = 26a0

[c6xdsp ] [CH04] pInFrame->addr[0][0] = 39e0

[c6xdsp ] [CH06] pInFrame->addr[0][0] = 1202100

[c6xdsp ] [CH07] pInFrame->addr[0][0] = 1202940

[c6xdsp ] [CH08] pInFrame->addr[0][0] = 24023c0

[c6xdsp ] [CH09] pInFrame->addr[0][0] = 2401340

[c6xdsp ] [CH10] pInFrame->addr[0][0] = 1203700

[c6xdsp ] [CH12] pInFrame->addr[0][0] = 2d00dc0

[c6xdsp ] [CH13] pInFrame->addr[0][0] = 2d00580

[c6xdsp ] [CH15] pInFrame->addr[0][0] = 2400b00

[c6xdsp ] [CH00] pInFrame->addr[0][0] = 9039c0

[c6xdsp ] [CH01] pInFrame->addr[0][0] = 903180

[c6xdsp ] [CH05] pInFrame->addr[0][0] = 1200000

[c6xdsp ] [CH14] pInFrame->addr[0][0] = 2401e40

[c6xdsp ] [CH04] pInFrame->addr[0][0] = 901080

[c6xdsp ] [CH06] pInFrame->addr[0][0] = 1202ec0

[c6xdsp ] [CH07] pInFrame->addr[0][0] = 1202680

[c6xdsp ] [CH08] pInFrame->addr[0][0] = 2d00000

[c6xdsp ] [CH09] pInFrame->addr[0][0] = 1b00000

[c6xdsp ] [CH11] pInFrame->addr[0][0] = 1b00580

[c6xdsp ] [CH12] pInFrame->addr[0][0] = 24002c0

[c6xdsp ] [CH13] pInFrame->addr[0][0] = 1b002c0

[c6xdsp ] [CH15] pInFrame->addr[0][0] = 1b02940

[c6xdsp ] [CH00] pInFrame->addr[0][0] = 1200b00

[c6xdsp ] [CH01] pInFrame->addr[0][0] = 9018c0

[c6xdsp ] [CH02] pInFrame->addr[0][0] = 902100

[c6xdsp ] [CH03] pInFrame->addr[0][0] = 10a0

[c6xdsp ] [CH05] pInFrame->addr[0][0] = 9002c0

[c6xdsp ] [CH10] pInFrame->addr[0][0] = 12039c0

[c6xdsp ] [CH14] pInFrame->addr[0][0] = 1b00840

[c6xdsp ] [CH11] pInFrame->addr[0][0] = 2400000

[c6xdsp ] [CH02] pInFrame->addr[0][0] = 902c00

[c6xdsp ] [CH03] pInFrame->addr[0][0] = 12023c0

[c6xdsp ] [CH04] pInFrame->addr[0][0] = 903440

[c6xdsp ] [CH06] pInFrame->addr[0][0] = 3ca0

[c6xdsp ] [CH07] pInFrame->addr[0][0] = 1ba0

[c6xdsp ] [CH08] pInFrame->addr[0][0] = 1203180

[c6xdsp ] [CH09] pInFrame->addr[0][0] = 2402680

[c6xdsp ] [CH10] pInFrame->addr[0][0] = 1b023c0

[c6xdsp ] [CH12] pInFrame->addr[0][0] = 2402940

[c6xdsp ] [CH13] pInFrame->addr[0][0] = 1b03700

[c6xdsp ] [CH15] pInFrame->addr[0][0] = 1b01340

[c6xdsp ] [CH00] pInFrame->addr[0][0] = 1201340

[c6xdsp ] [CH01] pInFrame->addr[0][0] = 900840

[c6xdsp ] [CH05] pInFrame->addr[0][0] = b20

[c6xdsp ] [CH14] pInFrame->addr[0][0] = 2d02100

[c6xdsp ] [CH04] pInFrame->addr[0][0] = 901b80

[c6xdsp ] [CH06] pInFrame->addr[0][0] = 2120

[c6xdsp ] [CH07] pInFrame->addr[0][0] = 1200580

[c6xdsp ] [CH08] pInFrame->addr[0][0] = 1b00b00

[c6xdsp ] [CH09] pInFrame->addr[0][0] = 2d01b80

[c6xdsp ] [CH11] pInFrame->addr[0][0] = 2402100

[c6xdsp ] [CH12] pInFrame->addr[0][0] = 1b039c0

[c6xdsp ] [CH13] pInFrame->addr[0][0] = 1b01b80

[c6xdsp ] [CH15] pInFrame->addr[0][0] = 24018c0

[c6xdsp ] [CH00] pInFrame->addr[0][0] = 2960

[c6xdsp ] [CH01] pInFrame->addr[0][0] = de0

[c6xdsp ] [CH02] pInFrame->addr[0][0] = 1201600

[c6xdsp ] [CH03] pInFrame->addr[0][0] = 1360

[c6xdsp ] [CH05] pInFrame->addr[0][0] = 20

[c6xdsp ] [CH10] pInFrame->addr[0][0] = 2d01080

[c6xdsp ] [CH14] pInFrame->addr[0][0] = 2400840

[c6xdsp ] [CH06] pInFrame->addr[0][0] = 900b00

[c6xdsp ] [CH07] pInFrame->addr[0][0] = 1200dc0

[c6xdsp ] [CH11] pInFrame->addr[0][0] = 2401b80

[c6xdsp ] [CH00] pInFrame->addr[0][0] = 903c80

[c6xdsp ] [CH01] pInFrame->addr[0][0] = 31a0

[c6xdsp ] [CH02] pInFrame->addr[0][0] = 2ee0

[c6xdsp ] [CH03] pInFrame->addr[0][0] = 9023c0

etc...

I think instead of valid pointer to the frame buffer I recieves from MCFW (IPC link) "garbadge". I can't explain, how these adresses "correllate" with device memory map.

I think that DSP IPC FRAME IN link isn't properly fill FrameInfo structure.

Please help me resolve this problem. How I can get valid (real!) pointer to the frame buffer.

Regards!

over 12 years ago

0 Badri Narayanan over 12 years ago

TI__Guru 59700 points

This looks like tiled memory address. Can you explain your usecase data flow. Which link feeds input to DSPLINK ? Is it DEI link.

0 Marat Shchuchinsky over 12 years ago in reply to Badri Narayanan

Expert 2595 points

Yes, it's right, DSP ALG in chains placed after DEI link and DEI use tiler.

0 Badri Narayanan over 12 years ago in reply to Marat Shchuchinsky

TI__Guru 59700 points

Ok,In that case the address has to be translated from Tiler address to CPU address. Pls use API Utils_tilerAddr2CpuAddr to translate tiler address to CPU address before accessing the buffer.You can refer

/dvr_rdk/mcfw/src_bios6/links_c6xdsp/alg_link/swosd/osdLink_alg.c

AlgLink_OsdalgProcessFrame() function for example usage

0 Marat Shchuchinsky over 12 years ago in reply to Badri Narayanan

Expert 2595 points

after address translate by Utils_tilerAddr2CpuAddr () recive values as following:

[c6xdsp ] [CH00] pInFrame->addr[0][0] = 60003460

[c6xdsp ] [CH02] pInFrame->addr[0][0] = 61200dc0

[c6xdsp ] [CH04] pInFrame->addr[0][0] = 60902680

[c6xdsp ] [CH06] pInFrame->addr[0][0] = 60000b20

[c6xdsp ] [CH11] pInFrame->addr[0][0] = 62d01080

[c6xdsp ] [CH01] pInFrame->addr[0][0] = 60000860

[c6xdsp ] [CH08] pInFrame->addr[0][0] = 61203c80

[c6xdsp ] [CH09] pInFrame->addr[0][0] = 61b039c0

[c6xdsp ] [CH03] pInFrame->addr[0][0] = 60002120

[c6xdsp ] [CH05] pInFrame->addr[0][0] = 61201340

Not proper address again :-(

0 Badri Narayanan over 12 years ago in reply to Marat Shchuchinsky

TI__Guru 59700 points

This is the correct address. Tiler IP will translate the tiler virtual address in address range 0x6000_0000 to 0x8000_0000 to physical address based on the TILER PAT programming. The Tiler PAT programming is already done in RDK. You can access the memory address in range 0x6000_0000 to 0x8000_0000 like normal memory.Note that the pitch for 8bit container is 16384 and pitch for 16 bit container is 32768.

0 Marat Shchuchinsky over 12 years ago in reply to Badri Narayanan

Expert 2595 points

ThanX alot. And last question please: I can use DMA for this address - 0x6........ ?

0 Badri Narayanan over 12 years ago in reply to Marat Shchuchinsky

TI__Guru 59700 points

Yes you can use DMA on this address 0x6....Note that DMA acnt/bcnt/ccnt registers are signed 16 bit registers. Since pitch of tiler 16 bit container is 32768 this will be treated as -32768 . So if you are going to operate on chroma buffer (16 bit container) it is required to either operate line by line or you will have to start from end of buffer and

use -32768 as pitch

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DM8168: Pointer to the frame buffer addr[0][0] on slave processor (on DSP side)