Date: Fri, 11 Nov 2016 15:16:37 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r308532 - head/share/man/man4 Message-ID: <201611111516.uABFGbHr084179@repo.freebsd.org>
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Author: avg Date: Fri Nov 11 15:16:37 2016 New Revision: 308532 URL: https://svnweb.freebsd.org/changeset/base/308532 Log: update SMB_BWRITE documentation, clarify SMB_BREAD After removal of SMB_TRANS some information in the description of SMB_BWRITE has become stale. E.g., the maximum block size has been restored to 32. Also, the descriptions of SMB_BREAD and SMB_BWRITE had some incorrect information on the SMBus protocol details. MFC after: 1 week X-MFC with: r308242 Differential Revision: https://reviews.freebsd.org/D8431 Modified: head/share/man/man4/smb.4 Modified: head/share/man/man4/smb.4 ============================================================================== --- head/share/man/man4/smb.4 Fri Nov 11 15:13:30 2016 (r308531) +++ head/share/man/man4/smb.4 Fri Nov 11 15:16:37 2016 (r308532) @@ -141,26 +141,25 @@ in .Em BlockWrite first sends the byte from .Fa cmd -to the device, followed by +to the device, then the byte from +.Fa wcount +followed by .Fa wcount bytes of data that are taken from the buffer pointed to by .Fa wbuf . The SMBus specification mandates that no more than 32 bytes of -data can be transferred in a single block read or write command, -but since -.Xr smbus 4 -is also used to access I2C devices, the limit has been increased -to 1024. +data can be transferred in a single block read or write command. This value can be read from the constant .Dv SMB_MAXBLOCKSIZE . .It Dv SMB_BREAD Ta .Em BlockRead first sends the byte from .Fa cmd -to the device, then reads -.Fa rcount -bytes of data that from the device. -This data is returned in the buffer pointed to by +to the device, then reads a count of data bytes that the device +is going to provide and then reads that many bytes. +The count is returned in +.Fa rcount. +The data is returned in the buffer pointed to by .Fa rbuf . .El .Pp
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