Serial Memory Interface Controller interface

Hi,

I am working on ST's SMI controller for Serial NOR flashes. This controller is a special controller build specifically for serial memories (spi based). It has certain features directly catering to serial memories such as mapping of memory directly on the bus so that it can be directly accessed/addressed.

Now the problem is that this controller cannot be exactly mapped in to SPI framework due to its features. What should be the best approach

1. To write serial nor flash drivers accessing smi controller (instead of SPI framework APIs)
2. To use some tricks and fit SMI controller into SPI framework itself.

thanks for help

regards
Shiraz