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https://github.com/freebsd/freebsd-src
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A bunch of nits from bde.
Make the name "pps" all over the place. Remove the hardcoded 10us offset, use sawtooth for it.
This commit is contained in:
Poul-Henning Kamp
parent
a397086e61
commit
95f0f58cc3
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=33396
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@ -6,34 +6,30 @@
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* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
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* ----------------------------------------------------------------------------
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*
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* $Id: pps.c,v 1.1 1998/02/13 12:59:56 phk Exp $
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* $Id: pps.c,v 1.2 1998/02/13 17:35:33 phk Exp $
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*
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*/
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#include "opt_devfs.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/buf.h>
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#include <sys/uio.h>
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#include <sys/syslog.h>
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#ifdef DEVFS
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#include <sys/devfsext.h>
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#endif /*DEVFS*/
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#endif
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#include <sys/malloc.h>
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#include <machine/clock.h>
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#include <machine/lpt.h>
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#include <dev/ppbus/ppbconf.h>
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#include "pps.h"
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#define PPS_NAME "pps" /* our official name */
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static struct ppps_data {
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int ppps_unit;
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struct ppb_device ppps_dev;
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static struct pps_data {
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int pps_unit;
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struct ppb_device pps_dev;
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struct ppsclockev {
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struct timespec timestamp;
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u_int serial;
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@ -41,62 +37,61 @@ static struct ppps_data {
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int sawtooth;
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} *softc[NPPS];
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static int nppps;
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static int sawtooth;
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static int npps;
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/*
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* Make ourselves visible as a ppbus driver
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*/
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static struct ppb_device *pppsprobe(struct ppb_data *ppb);
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static int pppsattach(struct ppb_device *dev);
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static void pppsintr(int unit);
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static void ppps_drvinit(void *unused);
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static struct ppb_device *ppsprobe(struct ppb_data *ppb);
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static int ppsattach(struct ppb_device *dev);
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static void ppsintr(int unit);
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static void pps_drvinit(void *unused);
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static struct ppb_driver pppsdriver = {
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pppsprobe, pppsattach, PPS_NAME
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static struct ppb_driver ppsdriver = {
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ppsprobe, ppsattach, PPS_NAME
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};
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DATA_SET(ppbdriver_set, pppsdriver);
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DATA_SET(ppbdriver_set, ppsdriver);
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static d_open_t pppsopen;
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static d_close_t pppsclose;
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static d_read_t pppsread;
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static d_write_t pppswrite;
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static d_open_t ppsopen;
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static d_close_t ppsclose;
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static d_read_t ppsread;
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static d_write_t ppswrite;
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#define CDEV_MAJOR 89
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static struct cdevsw ppps_cdevsw =
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{ pppsopen, pppsclose, pppsread, pppswrite,
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static struct cdevsw pps_cdevsw =
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{ ppsopen, ppsclose, ppsread, ppswrite,
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noioctl, nullstop, nullreset, nodevtotty,
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seltrue, nommap, nostrat, PPS_NAME,
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NULL, -1 };
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static struct ppb_device *
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pppsprobe(struct ppb_data *ppb)
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ppsprobe(struct ppb_data *ppb)
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{
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struct ppps_data *sc;
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struct pps_data *sc;
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sc = (struct ppps_data *) malloc(sizeof(struct ppps_data),
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sc = (struct pps_data *) malloc(sizeof(struct pps_data),
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M_TEMP, M_NOWAIT);
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if (!sc) {
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printf(PPS_NAME ": cannot malloc!\n");
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return (0);
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}
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bzero(sc, sizeof(struct ppps_data));
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bzero(sc, sizeof(struct pps_data));
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softc[nppps] = sc;
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softc[npps] = sc;
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sc->ppps_unit = nppps++;
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sc->pps_unit = npps++;
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sc->ppps_dev.id_unit = sc->ppps_unit;
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sc->ppps_dev.ppb = ppb;
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sc->ppps_dev.intr = pppsintr;
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sc->pps_dev.id_unit = sc->pps_unit;
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sc->pps_dev.ppb = ppb;
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sc->pps_dev.intr = ppsintr;
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return (&sc->ppps_dev);
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return (&sc->pps_dev);
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}
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static int
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pppsattach(struct ppb_device *dev)
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ppsattach(struct ppb_device *dev)
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{
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/*
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* Report ourselves
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@ -105,10 +100,10 @@ pppsattach(struct ppb_device *dev)
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dev->id_unit, dev->ppb->ppb_link->adapter_unit);
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#ifdef DEVFS
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sc->devfs_token = devfs_add_devswf(&ppps_cdevsw,
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devfs_add_devswf(&pps_cdevsw,
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dev->id_unit, DV_CHR,
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UID_ROOT, GID_WHEEL, 0600, PPS_NAME "%d", dev->id_unit);
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sc->devfs_token_ctl = devfs_add_devswf(&ppps_cdevsw,
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devfs_add_devswf(&pps_cdevsw,
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dev->id_unit | LP_BYPASS, DV_CHR,
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UID_ROOT, GID_WHEEL, 0600, PPS_NAME "%d.ctl", dev->id_unit);
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#endif
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@ -117,52 +112,51 @@ pppsattach(struct ppb_device *dev)
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}
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static int
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pppsopen(dev_t dev, int flags, int fmt, struct proc *p)
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ppsopen(dev_t dev, int flags, int fmt, struct proc *p)
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{
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struct ppps_data *sc;
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struct pps_data *sc;
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u_int unit = minor(dev);
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if ((unit >= nppps))
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if ((unit >= npps))
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return (ENXIO);
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sc = softc[unit];
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if (ppb_request_bus(&sc->ppps_dev, PPB_WAIT|PPB_INTR))
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if (ppb_request_bus(&sc->pps_dev, PPB_WAIT|PPB_INTR))
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return (EINTR);
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ppb_wctr(&sc->ppps_dev, 0x10);
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ppb_wctr(&sc->pps_dev, 0x10);
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return(0);
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}
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static int
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pppsclose(dev_t dev, int flags, int fmt, struct proc *p)
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ppsclose(dev_t dev, int flags, int fmt, struct proc *p)
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{
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struct ppps_data *sc = softc[minor(dev)];
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struct pps_data *sc = softc[minor(dev)];
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ppb_release_bus(&sc->ppps_dev);
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ppb_release_bus(&sc->pps_dev);
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return(0);
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}
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static void
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pppsintr(int unit)
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ppsintr(int unit)
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{
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/*
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* XXX: You want to thing carefully about what you actually want to do
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* here.
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*/
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#if 0
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struct ppps_data *sc = softc[unit];
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#if 1
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struct pps_data *sc = softc[unit];
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struct timespec tc;
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#if 1
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struct timeval tv;
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#endif
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nanotime(&tc);
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if (!(ppb_rstr(&sc->ppps_dev) & nACK))
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if (!(ppb_rstr(&sc->pps_dev) & nACK))
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return;
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tc.tv_nsec -= sc->sawtooth;
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tc.tv_nsec += 10000;
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sc->sawtooth = 0;
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if (tc.tv_nsec > 1000000000) {
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tc.tv_sec++;
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@ -182,41 +176,39 @@ pppsintr(int unit)
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}
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static int
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pppsread(dev_t dev, struct uio *uio, int ioflag)
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ppsread(dev_t dev, struct uio *uio, int ioflag)
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{
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struct ppps_data *sc = softc[minor(dev)];
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struct pps_data *sc = softc[minor(dev)];
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int err, c;
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c = imin(uio->uio_resid, sizeof sc->ev);
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err = uiomove(&sc->ev, c, uio);
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c = imin(uio->uio_resid, (int)sizeof sc->ev);
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err = uiomove((caddr_t)&sc->ev, c, uio);
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return(err);
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}
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static int
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pppswrite(dev_t dev, struct uio *uio, int ioflag)
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ppswrite(dev_t dev, struct uio *uio, int ioflag)
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{
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struct ppps_data *sc = softc[minor(dev)];
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struct pps_data *sc = softc[minor(dev)];
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int err, c;
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c = imin(uio->uio_resid, sizeof sc->sawtooth);
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err = uiomove(&sc->sawtooth, c, uio);
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c = imin(uio->uio_resid, (int)sizeof sc->sawtooth);
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err = uiomove((caddr_t)&sc->sawtooth, c, uio);
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return(err);
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}
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static ppps_devsw_installed = 0;
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static pps_devsw_installed = 0;
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static void
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ppps_drvinit(void *unused)
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pps_drvinit(void *unused)
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{
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dev_t dev;
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if( ! ppps_devsw_installed ) {
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if( ! pps_devsw_installed ) {
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dev = makedev(CDEV_MAJOR, 0);
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cdevsw_add(&dev,&ppps_cdevsw, NULL);
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ppps_devsw_installed = 1;
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cdevsw_add(&dev, &pps_cdevsw, NULL);
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pps_devsw_installed = 1;
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}
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}
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SYSINIT(pppsdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,ppps_drvinit,NULL)
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SYSINIT(ppsdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,pps_drvinit,NULL)
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