Hi Jeff: I am working on enabling Compact Flash support on an ARM embedded Platform. I implemented the Host Controller driver for the ARM Platform. I was going through the linux pcmcia subsystem and found that there is an existing pata_pcmcia.c client driver to support ATA/IDE emulation for PCMCIA/Compact Flash cards. This uses the libata-core.c helper library for ATA. I had a couple of questions in regard to this which I thought you might be the best person to ask: 1. Is this library generic for all platforms or is it specific to PC because it seems to reference PCI in some places. If I have my host controller driver, is the current pata_pcmcia.c (and libata helper libraries) sufficient to use the Compact Flash in True-IDE mode or something additional is needed. 2. The CF TrueIDE mode supports Multiword DMA and Ultra DMA modes of data transfer. Your libata-core.c seems to have support for these modes. However I assume I will need to provide the DMA Buffer to facilitate this. Do I need to provide call back functions to do this or I need to implement a seperate Client Driver to support these modes? I assume the pata_pcmcia.c uses PIO mode by default? Correct me if I am wrong. Thanks in advance. Regards, kiran -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
