Merged from sys/isa/fd.c revisions from 1.229 to 1.232.
This commit is contained in:
Yoshihiro Takahashi
parent
0e053201b3
commit
3ffc9f0bff
@ -189,6 +189,8 @@ struct fdc_data
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#endif
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};
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#define BIO_FORMAT BIO_CMD2
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typedef int fdu_t;
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typedef int fdcu_t;
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typedef int fdsu_t;
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@ -234,6 +236,17 @@ FDC_ACCESSOR(fdunit, FDUNIT, int)
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*/
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#define FDC_DMAOV_MAX 25
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/*
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* Timeout value for the PIO loops to wait until the FDC main status
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* register matches our expectations (request for master, direction
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* bit). This is supposed to be a number of microseconds, although
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* timing might actually not be very accurate.
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*
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* Timeouts of 100 msec are believed to be required for some broken
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* (old) hardware.
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*/
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#define FDSTS_TIMEOUT 100000
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/*
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* Number of subdevices that can be used for different density types.
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* By now, the lower 6 bit of the minor number are reserved for this,
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@ -251,7 +264,6 @@ FDC_ACCESSOR(fdunit, FDUNIT, int)
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#endif
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#define BIO_RDSECTID BIO_CMD1
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#define BIO_FORMAT BIO_CMD2
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/*
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* List of native drive densities. Order must match enum fd_drivetype
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@ -482,7 +494,9 @@ static void fdctl_wr_isa(fdc_p, u_int8_t);
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#if NCARD > 0
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static void fdctl_wr_pcmcia(fdc_p, u_int8_t);
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#endif
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#if 0
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static u_int8_t fdin_rd(fdc_p);
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#endif
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#endif /* PC98 */
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static int fdc_err(struct fdc_data *, const char *);
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static int fd_cmd(struct fdc_data *, int, ...);
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@ -703,13 +717,15 @@ enable_fifo(fdc_p fdc)
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return fdc_err(fdc, "Enable FIFO failed\n");
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/* If command is invalid, return */
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j = 100000;
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j = FDSTS_TIMEOUT;
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while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM))
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!= NE7_RQM && j-- > 0)
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!= NE7_RQM && j-- > 0) {
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if (i == (NE7_DIO | NE7_RQM)) {
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fdc_reset(fdc);
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return FD_FAILED;
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}
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DELAY(1);
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}
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if (j<0 ||
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fd_cmd(fdc, 3,
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0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) {
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@ -1887,23 +1903,33 @@ fdc_reset(fdc_p fdc)
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static int
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fd_in(struct fdc_data *fdc, int *ptr)
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{
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int i, j = 100000;
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int i, j = FDSTS_TIMEOUT;
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while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM))
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!= (NE7_DIO|NE7_RQM) && j-- > 0)
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!= (NE7_DIO|NE7_RQM) && j-- > 0) {
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if (i == NE7_RQM)
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return fdc_err(fdc, "ready for output in input\n");
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return (fdc_err(fdc, "ready for output in input\n"));
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/*
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* After (maybe) 1 msec of waiting, back off to larger
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* stepping to get the timing more accurate.
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*/
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if (FDSTS_TIMEOUT - j > 1000) {
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DELAY(1000);
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j -= 999;
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} else
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DELAY(1);
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}
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if (j <= 0)
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return fdc_err(fdc, bootverbose? "input ready timeout\n": 0);
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return (fdc_err(fdc, bootverbose? "input ready timeout\n": 0));
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#ifdef FDC_DEBUG
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i = fddata_rd(fdc);
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TRACE1("[FDDATA->0x%x]", (unsigned char)i);
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*ptr = i;
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return 0;
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return (0);
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#else /* !FDC_DEBUG */
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i = fddata_rd(fdc);
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if (ptr)
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*ptr = i;
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return 0;
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return (0);
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#endif /* FDC_DEBUG */
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}
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@ -1913,15 +1939,34 @@ out_fdc(struct fdc_data *fdc, int x)
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int i;
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/* Check that the direction bit is set */
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i = 100000;
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while ((fdsts_rd(fdc) & NE7_DIO) && i-- > 0);
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if (i <= 0) return fdc_err(fdc, "direction bit not set\n");
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i = FDSTS_TIMEOUT;
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while ((fdsts_rd(fdc) & NE7_DIO) && i-- > 0)
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/*
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* After (maybe) 1 msec of waiting, back off to larger
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* stepping to get the timing more accurate.
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*/
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if (FDSTS_TIMEOUT - i > 1000) {
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DELAY(1000);
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i -= 999;
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} else
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DELAY(1);
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if (i <= 0)
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return (fdc_err(fdc, "direction bit not set\n"));
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/* Check that the floppy controller is ready for a command */
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i = 100000;
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while ((fdsts_rd(fdc) & NE7_RQM) == 0 && i-- > 0);
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i = FDSTS_TIMEOUT;
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while ((fdsts_rd(fdc) & NE7_RQM) == 0 && i-- > 0)
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/*
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* After (maybe) 1 msec of waiting, back off to larger
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* stepping to get the timing more accurate.
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*/
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if (FDSTS_TIMEOUT - i > 1000) {
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DELAY(1000);
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i -= 999;
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} else
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DELAY(1);
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if (i <= 0)
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return fdc_err(fdc, bootverbose? "output ready timeout\n": 0);
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return (fdc_err(fdc, bootverbose? "output ready timeout\n": 0));
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/* Send the command and return */
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fddata_wr(fdc, x);
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@ -2332,12 +2377,14 @@ fdautoselect(dev_t dev)
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fd->options = oopts;
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if (i == n) {
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device_printf(fd->dev, "autoselection failed\n");
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if (bootverbose)
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device_printf(fd->dev, "autoselection failed\n");
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fd->ft = 0;
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return (EIO);
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} else {
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device_printf(fd->dev, "autoselected %d KB medium\n",
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fd->ft->size / 2);
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if (bootverbose)
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device_printf(fd->dev, "autoselected %d KB medium\n",
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fd->ft->size / 2);
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return (0);
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}
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}
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@ -189,6 +189,8 @@ struct fdc_data
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#endif
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};
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#define BIO_FORMAT BIO_CMD2
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typedef int fdu_t;
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typedef int fdcu_t;
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typedef int fdsu_t;
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@ -234,6 +236,17 @@ FDC_ACCESSOR(fdunit, FDUNIT, int)
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*/
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#define FDC_DMAOV_MAX 25
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/*
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* Timeout value for the PIO loops to wait until the FDC main status
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* register matches our expectations (request for master, direction
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* bit). This is supposed to be a number of microseconds, although
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* timing might actually not be very accurate.
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*
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* Timeouts of 100 msec are believed to be required for some broken
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* (old) hardware.
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*/
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#define FDSTS_TIMEOUT 100000
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/*
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* Number of subdevices that can be used for different density types.
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* By now, the lower 6 bit of the minor number are reserved for this,
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@ -251,7 +264,6 @@ FDC_ACCESSOR(fdunit, FDUNIT, int)
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#endif
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#define BIO_RDSECTID BIO_CMD1
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#define BIO_FORMAT BIO_CMD2
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/*
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* List of native drive densities. Order must match enum fd_drivetype
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@ -482,7 +494,9 @@ static void fdctl_wr_isa(fdc_p, u_int8_t);
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#if NCARD > 0
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static void fdctl_wr_pcmcia(fdc_p, u_int8_t);
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#endif
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#if 0
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static u_int8_t fdin_rd(fdc_p);
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#endif
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#endif /* PC98 */
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static int fdc_err(struct fdc_data *, const char *);
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static int fd_cmd(struct fdc_data *, int, ...);
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@ -703,13 +717,15 @@ enable_fifo(fdc_p fdc)
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return fdc_err(fdc, "Enable FIFO failed\n");
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/* If command is invalid, return */
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j = 100000;
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j = FDSTS_TIMEOUT;
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while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM))
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!= NE7_RQM && j-- > 0)
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!= NE7_RQM && j-- > 0) {
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if (i == (NE7_DIO | NE7_RQM)) {
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fdc_reset(fdc);
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return FD_FAILED;
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}
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DELAY(1);
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}
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if (j<0 ||
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fd_cmd(fdc, 3,
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0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) {
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@ -1887,23 +1903,33 @@ fdc_reset(fdc_p fdc)
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static int
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fd_in(struct fdc_data *fdc, int *ptr)
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{
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int i, j = 100000;
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int i, j = FDSTS_TIMEOUT;
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while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM))
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!= (NE7_DIO|NE7_RQM) && j-- > 0)
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!= (NE7_DIO|NE7_RQM) && j-- > 0) {
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if (i == NE7_RQM)
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return fdc_err(fdc, "ready for output in input\n");
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return (fdc_err(fdc, "ready for output in input\n"));
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/*
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* After (maybe) 1 msec of waiting, back off to larger
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* stepping to get the timing more accurate.
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*/
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if (FDSTS_TIMEOUT - j > 1000) {
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DELAY(1000);
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j -= 999;
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} else
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DELAY(1);
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}
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if (j <= 0)
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return fdc_err(fdc, bootverbose? "input ready timeout\n": 0);
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return (fdc_err(fdc, bootverbose? "input ready timeout\n": 0));
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#ifdef FDC_DEBUG
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i = fddata_rd(fdc);
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TRACE1("[FDDATA->0x%x]", (unsigned char)i);
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*ptr = i;
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return 0;
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return (0);
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#else /* !FDC_DEBUG */
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i = fddata_rd(fdc);
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if (ptr)
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*ptr = i;
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return 0;
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return (0);
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#endif /* FDC_DEBUG */
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}
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@ -1913,15 +1939,34 @@ out_fdc(struct fdc_data *fdc, int x)
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int i;
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/* Check that the direction bit is set */
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i = 100000;
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while ((fdsts_rd(fdc) & NE7_DIO) && i-- > 0);
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if (i <= 0) return fdc_err(fdc, "direction bit not set\n");
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i = FDSTS_TIMEOUT;
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while ((fdsts_rd(fdc) & NE7_DIO) && i-- > 0)
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/*
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* After (maybe) 1 msec of waiting, back off to larger
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* stepping to get the timing more accurate.
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*/
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if (FDSTS_TIMEOUT - i > 1000) {
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DELAY(1000);
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i -= 999;
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} else
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DELAY(1);
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if (i <= 0)
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return (fdc_err(fdc, "direction bit not set\n"));
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/* Check that the floppy controller is ready for a command */
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i = 100000;
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while ((fdsts_rd(fdc) & NE7_RQM) == 0 && i-- > 0);
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i = FDSTS_TIMEOUT;
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while ((fdsts_rd(fdc) & NE7_RQM) == 0 && i-- > 0)
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/*
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* After (maybe) 1 msec of waiting, back off to larger
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* stepping to get the timing more accurate.
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*/
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if (FDSTS_TIMEOUT - i > 1000) {
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DELAY(1000);
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i -= 999;
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} else
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DELAY(1);
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if (i <= 0)
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return fdc_err(fdc, bootverbose? "output ready timeout\n": 0);
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return (fdc_err(fdc, bootverbose? "output ready timeout\n": 0));
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/* Send the command and return */
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fddata_wr(fdc, x);
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@ -2332,12 +2377,14 @@ fdautoselect(dev_t dev)
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fd->options = oopts;
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if (i == n) {
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device_printf(fd->dev, "autoselection failed\n");
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if (bootverbose)
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device_printf(fd->dev, "autoselection failed\n");
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fd->ft = 0;
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return (EIO);
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} else {
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device_printf(fd->dev, "autoselected %d KB medium\n",
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fd->ft->size / 2);
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if (bootverbose)
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device_printf(fd->dev, "autoselected %d KB medium\n",
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fd->ft->size / 2);
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return (0);
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}
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}
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