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Annoying little nigglet- apparently *some* Qlogic temporarily ignore

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settings you've just sent them and return random values if you follow
the set by a get. This causes problems when you latter run a Tag-enabled
command when you've command tagged mode off.
This commit is contained in:
Matt Jacob 1999-03-26 00:33:13 +00:00
parent efc7b6fd9d
commit 3bd28825dd
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=45045
1 changed files with 10 additions and 2 deletions
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12
sys/dev/isp/isp.c
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@ -1,4 +1,4 @@
/* $Id: isp.c,v 1.14 1999/03/17 05:04:38 mjacob Exp $ */
/* $Id: isp.c,v 1.15 1999/03/25 22:52:44 mjacob Exp $ */
/* release_03_25_99 */
/*
* Machine and OS Independent (well, as best as possible)
@ -743,7 +743,7 @@ isp_init(isp)
* We don't update dev_flags with what we've set
* because that's not the ultimate goal setting.
* If we succeed with the command, we *do* update
* cur_dflags.
* cur_dflags by getting target parameters.
*/
mbs.param[0] = MBOX_GET_TARGET_PARAMS;
mbs.param[1] = (tgt << 8);
@ -759,6 +759,14 @@ isp_init(isp)
sdp->isp_devparam[tgt].cur_offset = mbs.param[3] >> 8;
sdp->isp_devparam[tgt].cur_period = mbs.param[3] & 0xff;
}
/*
* Ensure that we don't believe tagged queuing is enabled yet.
* It turns out that sometimes the ISP just ignores our
* attempts to set parameters for devices that it hasn't
* seen yet.
*/
sdp->isp_devparam[tgt].cur_dflags &= ~DPARM_TQING;
maxlun = (isp->isp_fwrev >= ISP_FW_REV(7, 55))? 32 : 8;
for (lun = 0; lun < maxlun; lun++) {
mbs.param[0] = MBOX_SET_DEV_QUEUE_PARAMS;