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Update cmd/rsp endian handling in exp_inband
Data written/read from the command/response/data buffers is done so in transaction sizes of 4 or 8 bytes. The data in those transactions will be little endian byte order. The byte order of those transactions must be corrected to represent the data structures stored in the buffers correctly for extraction of field data. The fields themselves will be big endian byte ordering. This patch also adds two attributes: ATTR_MSS_OCMB_EXP_STRUCT_MMIO_ENDIAN_CTRL - Controls whether or not bytes read from and written two the buffer are swapped. The default is to swap the byte order. ATTR_MSS_OCMB_EXP_STRUCT_ENDIAN - Controls whether or not the bytes of buffer structure fields are little endian or not. The default is big endian. Change-Id: I734d25dea2a3e4a864a2d35df2576676cad27cfe Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/72314 Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com> Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com> Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com> Reviewed-by: Benjamin Gass <bgass@us.ibm.com> Reviewed-by: Louis Stermole <stermole@us.ibm.com> Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com> Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/80988 Reviewed-by: RAJA DAS <rajadas2@in.ibm.com> Tested-by: RAJA DAS <rajadas2@in.ibm.com>
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