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Merge common XPT_CALC_GEOMETRY functions into a single convenience function.

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Devices below may experience a change in geometry.

* umass(4) drives exactly 1 GB in size now no longer use extended geometry.
This commit is contained in:
Nate Lawson 2003-06-14 22:40:08 +00:00
parent 9ed30b5853
commit c7bbca402a
1 changed files with 1 additions and 19 deletions
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20
sys/dev/usb/umass.c
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@ -2456,25 +2456,7 @@ umass_cam_action(struct cam_sim *sim, union ccb *ccb)
}
case XPT_CALC_GEOMETRY:
{
struct ccb_calc_geometry *ccg = &ccb->ccg;
u_int32_t size_mb;
u_int32_t secs_per_cylinder;
int extended = 1;
size_mb = ccg->volume_size
/ ((1024L * 1024L) / ccg->block_size);
if (size_mb >= 1024 && extended) {
ccg->heads = 255;
ccg->secs_per_track = 63;
} else {
ccg->heads = 64;
ccg->secs_per_track = 32;
}
secs_per_cylinder = ccg->heads * ccg->secs_per_track;
ccg->cylinders = ccg->volume_size / secs_per_cylinder;
ccb->ccb_h.status = CAM_REQ_CMP;
cam_calc_geometry(&ccb->ccg, /*extended*/1);
xpt_done(ccb);
break;
}