Date: Sat, 13 Jul 2013 21:24:26 +0000 (UTC) From: Matt Jacob <mjacob@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r253330 - head/sys/dev/isp Message-ID: <201307132124.r6DLOQEX073276@svn.freebsd.org>
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Author: mjacob Date: Sat Jul 13 21:24:25 2013 New Revision: 253330 URL: http://svnweb.freebsd.org/changeset/base/253330 Log: When fiddling with options of which registers to copy out for a mailbox command and which registers to copy back in when the command completes, the bits being set need to not only specify what bits you want to add from the default from the table but also what bits you want *subtract* (mask) from the default from the table. A failing ISP2200 command pointed this out. Much appreciation to: marius, who persisted and narrowed down what the failure delta was, and shamed me into actually fixing it. MFC after: 1 week Modified: head/sys/dev/isp/isp.c head/sys/dev/isp/ispreg.h Modified: head/sys/dev/isp/isp.c ============================================================================== --- head/sys/dev/isp/isp.c Sat Jul 13 20:56:09 2013 (r253329) +++ head/sys/dev/isp/isp.c Sat Jul 13 21:24:25 2013 (r253330) @@ -2589,7 +2589,7 @@ isp_get_wwn(ispsoftc_t *isp, int chan, i } mbs.param[9] = chan; } else { - mbs.ibits = 3; + mbs.ibitm = 3; mbs.param[1] = loopid << 8; if (nodename) { mbs.param[1] |= 1; @@ -7363,6 +7363,13 @@ isp_mboxcmd(ispsoftc_t *isp, mbreg_t *mb ibits |= mbp->ibits; obits |= mbp->obits; + /* + * Mask any bits that the caller wants us to mask + */ + ibits &= mbp->ibitm; + obits &= mbp->obitm; + + if (ibits == 0 && obits == 0) { mbp->param[0] = MBOX_COMMAND_PARAM_ERROR; isp_prt(isp, ISP_LOGERR, "no parameters for 0x%x", opcode); Modified: head/sys/dev/isp/ispreg.h ============================================================================== --- head/sys/dev/isp/ispreg.h Sat Jul 13 20:56:09 2013 (r253329) +++ head/sys/dev/isp/ispreg.h Sat Jul 13 21:24:25 2013 (r253330) @@ -464,8 +464,10 @@ #define MBCMD_DEFAULT_TIMEOUT 100000 /* 100 ms */ typedef struct { uint16_t param[MAX_MAILBOX]; - uint32_t ibits; - uint32_t obits; + uint32_t ibits; /* bits to add for register copyin */ + uint32_t obits; /* bits to add for register copyout */ + uint32_t ibitm; /* bits to mask for register copyin */ + uint32_t obitm; /* bits to mask for register copyout */ uint32_t lineno : 16, : 12, @@ -475,6 +477,8 @@ typedef struct { } mbreg_t; #define MBSINIT(mbxp, code, loglev, timo) \ ISP_MEMZERO((mbxp), sizeof (mbreg_t)); \ + (mbxp)->ibitm = ~0; \ + (mbxp)->obitm = ~0; \ (mbxp)->param[0] = code; \ (mbxp)->lineno = __LINE__; \ (mbxp)->func = __func__; \
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