Date: Mon, 9 Oct 2023 11:49:26 GMT From: Eugene Grosbein <eugen@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 3523f0677ef5 - main - fdc.4: document fdc sysctls Message-ID: <202310091149.399BnQo0023999@gitrepo.freebsd.org>
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The branch main has been updated by eugen: URL: https://cgit.FreeBSD.org/src/commit/?id=3523f0677ef514fe72710033c73cc58517b9cda8 commit 3523f0677ef514fe72710033c73cc58517b9cda8 Author: Felix Johnson <felix.the.red@gmail.com> AuthorDate: 2023-10-09 11:46:03 +0000 Commit: Eugene Grosbein <eugen@FreeBSD.org> CommitDate: 2023-10-09 11:48:52 +0000 fdc.4: document fdc sysctls PR: 105608 MFC-after: 1 week --- share/man/man4/fdc.4 | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 56 insertions(+), 1 deletion(-) diff --git a/share/man/man4/fdc.4 b/share/man/man4/fdc.4 index f42a74b3a65c..929baf3a234b 100644 --- a/share/man/man4/fdc.4 +++ b/share/man/man4/fdc.4 @@ -25,7 +25,7 @@ .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" -.Dd April 7, 2017 +.Dd October 10, 2023 .Dt FDC 4 .Os .Sh NAME @@ -311,6 +311,61 @@ Third argument is a pointer to This type is the same as being used in the per-drive configuration flags, or in the CMOS configuration data or ACPI namespace on IA32 systems. .El +.Sh SYSCTL VARIABLES +.Bl -tag -width "debug.fdc.debugflags" +.It Dv debug.fdc.debugflags +Selectively enable debugging by setting one or more flags. +.Bl -tag -width "0x40" +.It Dv 0x01 +Dump device registers on reset. +.It Dv 0x02 +When an IO operation completes, print the number of retries +when that number is greater than zero. +.It Dv 0x04 +Print when the number of retries exceeds +.Dv debug.fdc.retries +.Pq Dv EIO . +Print when the option +.Dv FDOPT_NOERROR +is set and an error would have returned from a write operation. +.It Dv 0x08 +Print detailed IO command information. +.It Dv 0x10 +Print status registers. +.It Dv 0x20 +Print detailed status registers when interrupts complete. +Print the source code line number close to the source of a +non-zero return from a thread worker operation. +.It Dv 0x40 +Print when the disk appears to be lost. +Print cylinder, head, sector, and sector shift information +after a request to read an ID field. +Notify whether a disk probe resulted in finding a disk. +When detecting the density of media present, indicate whether +the autosensing was successful, and if so, the size of the +medium in kilobytes. +Print detailed type information when setting the drive type. +.It Dv 0x80 +Print when an unknown IOCTL is used. +.El +.It Dv debug.fdc.fifo +For enhanced controllers, allows a non-default FIFO +threshold setting. The default is 8 bytes. +.It Dv debug.fdc.retries +Maximum number of retries to attempt. The default is 10. +.It Dv debug.fdc.spec1 +Specification byte one (step-rate + head unload). +The default step rate is 6 ms. The default head unload +time is 240 ms. +.It Dv debug.fdc.spec2 +Specification byte two (head load time + no-dma). +The default head load time is 16 ms, and no-dma is 0 +.Pq disabled . +.It Dv debug.fdc.settle +Head settling time in +.Sy settle +/ hz seconds. The default value is set during device attach. +.El .Sh FILES .Bl -tag -width ".Pa /dev/fd*" -compact .It Pa /dev/fd*
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