On Monday 07 August 2006 18:05, John-Mark Gurney wrote: > John Baldwin wrote this message on Mon, Aug 07, 2006 at 15:27 -0400: > > sc->cfg_table.signature = letoh32(bus_read_4(sc->bar.res, 0)); > > sc->cfg_table.version = letoh16(bus_read_2(sc->bar.res, 4)); > > sc->cfg_table.dummy = bus_read_1(sc->bar.res, 5); > > Note that this may or may not be correct... the bus_read_X macros > do endian conversion if the bus is of different endianness than the > processor arch... So if the device is on a PCI bus, and the machine > is sparc64, the bus_read_X will already be swapped as necessary... If > you don't want the byte swapping to be done for you, there are the > _stream versions... The are useful for transfering data like disk > data that needs to maintain the same order...
Then why are folks adding these macros to things like mpt? -- John Baldwin _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
