Hai, We have designed a MPC8641D based AMC card. As part of our customer requirement for a PCIe messaging driver for communicating between the MPC8641D AMC card as the PCIe target and the MPC8548E AMC card as the Host.
We are using the DMA for transferring data between the boards thru' PCIe. The DMA Interrupt on the target end is not getting registered and hence we face the issue (ie) No interrupt is generated after DMA transfer completion. As per datasheet(Rev. 1, 05/2007) page no:445 interrupt number for DMAchannel 1 is 4. We are using linux kernel version :2.6.23-rc3. According to file (include/asm-powerpc/irq.h) line no:636 the interrupt number for DMA in linux is 20(decimal). When using this interrupt number 20 we are not able to registerd the DMA interrupts. Note: 1. Linux is configured in SMP mode. 2. Value of Device status register(0xf80E000C) : 0x0aa28747 Thanks and Regards Sivaji -- View this message in context: http://www.nabble.com/DMA-interrupt-is-not-generating-in-MPC8641D-tf4805310.html#a13747460 Sent from the linuxppc-dev mailing list archive at Nabble.com. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
