Processor: ADSP-BF70x
All the DMA error interrupts are combined into a single shared interrupt. Combined error signals require reading the DMA_STAT register of each DMA channel associated with a combined error interrupt to determine the DMA channel responsible for the generation of the interrupt.
The interrupt ID for DMA error is 26(SYS_DMAC_ERR). It is available in the HRM under "Table 8-2: ADSP-BF70x Interrupt List"(Page No: 266/2223).
For more information, please refer the ADSP-BF70x Hardware reference manual. The link is given below.
https://www.analog.com/media/en/dsp-documentation/processor-manuals/BF70x_BlackfinProcessorHardwareReference.pdf