Re: CVS commit: src/sys/dev/i2o

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

> > (POLL() macro with bus_dmamap_sync() seems also wrong..)
> 
> Hum, it looks correct to me. We are after the device wrote something
> to RAM, so it's a POSTREAD operation, isn't it ?

Strictly, if DMA is still on-going even after DMA'ed memory is polled,
we also have to call PREREAD sync every time.

        for (xi = xxx; xi; xi--) {
                uint32_t temp;
                bus_dmamap_sync(..., POSTREAD|POSTWRITE);
                temp = le32toh(*sw);
                if (temp == I2O_EXEC_foo);
                        break; 
                bus_dmamap_sync(..., PREREAD);
        }

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Izumi Tsutsui