Albert Lee wrote:
Jeff,
Patch 1/3: Convert pdc2027x from PIO to MMIO
Description:
Indexed registers need two PIO accesses: one access writes to the
index register and the other access
reads/writes the indexed register. Using MMIO can access the register
directly and simplify the code.
Changes:
- Use MMIO instead of PIO and indexed registers.
- Minor fix such as add ata_host_stop hook and indent beautification,
etc.
Comments:
1) port_mmio() and dev_mmio() should be static inline
2) The -only- valid way to flush a write to the device across the PCI
bus is with a corresponding read[bwl](). wmb() is not sufficient.
Jeff
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