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authorIoana Radulescu <ruxandra.radulescu@nxp.com>2016-06-22 16:40:52 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-06-26 17:14:03 -0700
commit9989b59961a8ad55d92df4588b556f0c6c838ec7 (patch)
treea12fadd0caa275487bd87fcde3b8786fc01c3f48 /fs/ceph
parentadf72b5ba372ca9006f8cdcf9c0b902579f7da9f (diff)
staging: fsl-mc: convert mc command build/parse to use C structs
The layer abstracting the building of commands and extracting responses is currently based on macros that shift and mask the command fields and requires exposing offset/size values as macro parameters and makes the code harder to read. For clarity and maintainability, instead use an implementation based on mapping the MC command definitions to C structures. These structures contain the hardware command fields (which are naturally-aligned) and individual fields are little-endian ordering (the byte ordering of the hardware). As such, there is no need to perform the conversion between core and hardware (LE) endianness in mc_send_command(), but instead each individual field in a command will be converted separately if needed by the function building the command or extracting the response. This patch does not introduce functional changes, both the hardware ABIs and the APIs exposed for the DPAA2 objects remain the same. Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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