We've got a brand new Compaq ProLiant DL380 G2 machine but floppy drive
wasn't working at all with FreeBSD 4.x.
I found that there was a PR:
http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/21397
I got the following error messages:
Apr 16 16:57:48 /kernel: fdc0: direction bit not set
Apr 16 16:57:48 /kernel: fdc0: cmd 3 failed at out byte 1 of 3
Apr 16 16:57:48 /kernel: fdc0: direction bit not set
Apr 16 16:57:48 /kernel: fdc0: cmd 13 failed at out byte 1 of 4
Apr 16 16:57:48 /kernel: fdc0: Re-enable FIFO failed
Apr 16 16:57:50 /kernel: fdc0: direction bit not set
Apr 16 16:57:50 /kernel: fdc0: cmd 8 failed at out byte 1 of 1
Apr 16 16:57:50 /kernel: fdc0: sense intr err reading stat reg 0
------ >8 ------------ >8 ------------ >8 ------------ >8 ------------
>8 ------------ >8 ------
Apr 16 16:58:10 /kernel: fdc0: direction bit not set
Apr 16 16:58:10 /kernel: fdc0: cmd 8 failed at out byte 1 of 1
Apr 16 16:58:10 /kernel: fdc0: sense intr err reading stat reg 0
Apr 16 16:58:10 /kernel: fdc0: direction bit not set
Apr 16 16:58:10 /kernel: fdc0: cmd 7 failed at out byte 1 of 2
Apr 16 16:58:10 /kernel: fdc0: direction bit not set
Apr 16 16:58:10 /kernel: fdc0: cmd 3 failed at out byte 1 of 3
Apr 16 16:58:10 /kernel: fdc0: direction bit not set
Apr 16 16:58:10 /kernel: fdc0: cmd 13 failed at out byte 1 of 4
Apr 16 16:58:10 /kernel: fdc0: too many errors, not logging any more
I read src/sys/isa/fd.c and found out it was an ancient bug. Here is a
patch against 4.5-STABLE. Please note that 5.0-CURRENT has the same
problem. I will post the patch soon.
JK
--- sys/isa/fd.c.old Fri Apr 5 07:37:04 2002
+++ sys/isa/fd.c Tue Apr 16 19:59:03 2002
@@ -424,13 +424,15 @@
return fdc_err(fdc, "Enable FIFO failed\n");
/* If command is invalid, return */
- j = 100000;
+ j = FDSTS_TIMEOUT;
while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM))
- != NE7_RQM && j-- > 0)
+ != NE7_RQM && j-- > 0) {
if (i == (NE7_DIO | NE7_RQM)) {
fdc_reset(fdc);
return FD_FAILED;
}
+ DELAY(1);
+ }
if (j<0 ||
fd_cmd(fdc, 3,
0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) {
@@ -1296,11 +1298,13 @@
int
in_fdc(struct fdc_data *fdc)
{
- int i, j = 100000;
+ int i, j = FDSTS_TIMEOUT;
while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM))
- != (NE7_DIO|NE7_RQM) && j-- > 0)
+ != (NE7_DIO|NE7_RQM) && j-- > 0) {
if (i == NE7_RQM)
return fdc_err(fdc, "ready for output in input\n");
+ DELAY(1);
+ }
if (j <= 0)
return fdc_err(fdc, bootverbose? "input ready timeout\n": 0);
#ifdef FDC_DEBUG
@@ -1318,11 +1322,13 @@
static int
fd_in(struct fdc_data *fdc, int *ptr)
{
- int i, j = 100000;
+ int i, j = FDSTS_TIMEOUT;
while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM))
- != (NE7_DIO|NE7_RQM) && j-- > 0)
+ != (NE7_DIO|NE7_RQM) && j-- > 0) {
if (i == NE7_RQM)
return fdc_err(fdc, "ready for output in input\n");
+ DELAY(1);
+ }
if (j <= 0)
return fdc_err(fdc, bootverbose? "input ready timeout\n": 0);
#ifdef FDC_DEBUG
@@ -1344,13 +1350,15 @@
int i;
/* Check that the direction bit is set */
- i = 100000;
- while ((fdsts_rd(fdc) & NE7_DIO) && i-- > 0);
+ i = FDSTS_TIMEOUT;
+ while ((fdsts_rd(fdc) & NE7_DIO) && i-- > 0)
+ DELAY(1);
if (i <= 0) return fdc_err(fdc, "direction bit not set\n");
/* Check that the floppy controller is ready for a command */
- i = 100000;
- while ((fdsts_rd(fdc) & NE7_RQM) == 0 && i-- > 0);
+ i = FDSTS_TIMEOUT;
+ while ((fdsts_rd(fdc) & NE7_RQM) == 0 && i-- > 0)
+ DELAY(1);
if (i <= 0)
return fdc_err(fdc, bootverbose? "output ready timeout\n": 0);
--- sys/isa/fdreg.h.old Thu Jan 6 02:13:54 2000
+++ sys/isa/fdreg.h Tue Apr 16 19:54:28 2002
@@ -72,3 +72,4 @@
#define FDI_DCHG 0x80 /* diskette has been changed */
/* requires drive and motor being selected */
/* is cleared by any step pulse to drive */
+#define FDSTS_TIMEOUT 200 /* fdsts_rd() timeout */
