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freebsd-dev/sys/dev/ppbus/pps.c

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Start each of the license/copyright comments with /*-, minor shuffle of lines
2005-01-06 01:43:34 +00:00
/*-
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
Update to draft-mogul-pps-api-02.txt as submitted to IETF
1998-06-12 23:15:53 +00:00
*
* This driver implements a draft-mogul-pps-api-02.txt PPS source.
*
* The input pin is pin#10
* The echo output pin is pin#14
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
*
*/
Use __FBSDID(). Also some minor style cleanups.
2003-08-24 17:55:58 +00:00
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
Port of ppbus standalone framework to the newbus system. Note1: the correct interrupt level is invoked correctly for each driver. For this purpose, drivers request the bus before being able to call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus core when drivers release it. Thus, when BUS_SETUP_INTR is called at ppbus driver level, ppbus checks that the caller owns the bus and stores the interrupt handler cookie (in order to unregister it later). Printing is impossible while plip link is up is still TRUE. vpo (ZIP driver) and lpt are make in such a way that using the ZIP and printing concurrently is permitted is also TRUE. Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET is now needed to force chipset detection. If set, the flags 0x40 still avoid detection at boot. Port of the pcf(4) driver to the newbus system (was previously directly connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00
#include <sys/module.h>
#include <sys/bus.h>
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
#include <sys/conf.h>
This is a prototype implementation of the draft-mogul-pps-api-##.txt paper. It will be updated along with the draft and possible subsequent standard. The ppbus based pps driver is updated to implement this API.
1998-06-07 19:44:22 +00:00
#include <sys/timepps.h>
Port of ppbus standalone framework to the newbus system. Note1: the correct interrupt level is invoked correctly for each driver. For this purpose, drivers request the bus before being able to call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus core when drivers release it. Thus, when BUS_SETUP_INTR is called at ppbus driver level, ppbus checks that the caller owns the bus and stores the interrupt handler cookie (in order to unregister it later). Printing is impossible while plip link is up is still TRUE. vpo (ZIP driver) and lpt are make in such a way that using the ZIP and printing concurrently is permitted is also TRUE. Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET is now needed to force chipset detection. If set, the flags 0x40 still avoid detection at boot. Port of the pcf(4) driver to the newbus system (was previously directly connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
#include <dev/ppbus/ppbconf.h>
Port of ppbus standalone framework to the newbus system. Note1: the correct interrupt level is invoked correctly for each driver. For this purpose, drivers request the bus before being able to call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus core when drivers release it. Thus, when BUS_SETUP_INTR is called at ppbus driver level, ppbus checks that the caller owns the bus and stores the interrupt handler cookie (in order to unregister it later). Printing is impossible while plip link is up is still TRUE. vpo (ZIP driver) and lpt are make in such a way that using the ZIP and printing concurrently is permitted is also TRUE. Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET is now needed to force chipset detection. If set, the flags 0x40 still avoid detection at boot. Port of the pcf(4) driver to the newbus system (was previously directly connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00
#include "ppbus_if.h"
#include <dev/ppbus/ppbio.h>
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
Remove compile time limit on number of devices.
1999-08-08 22:25:46 +00:00
#define PPS_NAME "pps" /* our official name */
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
Fix warnings due to macro varargs.
2002-05-24 06:32:18 +00:00
#define PRVERBOSE(fmt, arg...) if (bootverbose) printf(fmt, ##arg);
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
Remove compile time limit on number of devices.
1999-08-08 22:25:46 +00:00
struct pps_data {
Kill trailing white space
2005-03-10 22:21:16 +00:00
struct ppb_device pps_dev;
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
struct pps_state pps[9];
Do the dreaded s/dev_t/struct cdev */ Bump __FreeBSD_version accordingly.
2004-06-16 09:47:26 +00:00
struct cdev *devs[9];
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
device_t ppsdev;
device_t ppbus;
int busy;
struct callout_handle timeout;
int lastdata;
Port of ppbus standalone framework to the newbus system. Note1: the correct interrupt level is invoked correctly for each driver. For this purpose, drivers request the bus before being able to call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus core when drivers release it. Thus, when BUS_SETUP_INTR is called at ppbus driver level, ppbus checks that the caller owns the bus and stores the interrupt handler cookie (in order to unregister it later). Printing is impossible while plip link is up is still TRUE. vpo (ZIP driver) and lpt are make in such a way that using the ZIP and printing concurrently is permitted is also TRUE. Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET is now needed to force chipset detection. If set, the flags 0x40 still avoid detection at boot. Port of the pcf(4) driver to the newbus system (was previously directly connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00
Make the pps interrupt register as MPSAFE and FAST. Use a spin lock to syncrhonize access to the data as a result. This makes the pps less likely to miss the 1ms pulse that I'm feeding it, but not entirely reliable yet on my 133MHz P5. Reviewed by: phk
2005-03-11 07:03:46 +00:00
struct mtx mtx;
Port of ppbus standalone framework to the newbus system. Note1: the correct interrupt level is invoked correctly for each driver. For this purpose, drivers request the bus before being able to call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus core when drivers release it. Thus, when BUS_SETUP_INTR is called at ppbus driver level, ppbus checks that the caller owns the bus and stores the interrupt handler cookie (in order to unregister it later). Printing is impossible while plip link is up is still TRUE. vpo (ZIP driver) and lpt are make in such a way that using the ZIP and printing concurrently is permitted is also TRUE. Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET is now needed to force chipset detection. If set, the flags 0x40 still avoid detection at boot. Port of the pcf(4) driver to the newbus system (was previously directly connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00
struct resource *intr_resource; /* interrupt resource */
void *intr_cookie; /* interrupt registration cookie */
Remove compile time limit on number of devices.
1999-08-08 22:25:46 +00:00
};
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
Port of ppbus standalone framework to the newbus system. Note1: the correct interrupt level is invoked correctly for each driver. For this purpose, drivers request the bus before being able to call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus core when drivers release it. Thus, when BUS_SETUP_INTR is called at ppbus driver level, ppbus checks that the caller owns the bus and stores the interrupt handler cookie (in order to unregister it later). Printing is impossible while plip link is up is still TRUE. vpo (ZIP driver) and lpt are make in such a way that using the ZIP and printing concurrently is permitted is also TRUE. Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET is now needed to force chipset detection. If set, the flags 0x40 still avoid detection at boot. Port of the pcf(4) driver to the newbus system (was previously directly connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00
static void ppsintr(void *arg);
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
static void ppshcpoll(void *arg);
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
Port of ppbus standalone framework to the newbus system. Note1: the correct interrupt level is invoked correctly for each driver. For this purpose, drivers request the bus before being able to call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus core when drivers release it. Thus, when BUS_SETUP_INTR is called at ppbus driver level, ppbus checks that the caller owns the bus and stores the interrupt handler cookie (in order to unregister it later). Printing is impossible while plip link is up is still TRUE. vpo (ZIP driver) and lpt are make in such a way that using the ZIP and printing concurrently is permitted is also TRUE. Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET is now needed to force chipset detection. If set, the flags 0x40 still avoid detection at boot. Port of the pcf(4) driver to the newbus system (was previously directly connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00
#define DEVTOSOFTC(dev) \
((struct pps_data *)device_get_softc(dev))
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
Port of ppbus standalone framework to the newbus system. Note1: the correct interrupt level is invoked correctly for each driver. For this purpose, drivers request the bus before being able to call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus core when drivers release it. Thus, when BUS_SETUP_INTR is called at ppbus driver level, ppbus checks that the caller owns the bus and stores the interrupt handler cookie (in order to unregister it later). Printing is impossible while plip link is up is still TRUE. vpo (ZIP driver) and lpt are make in such a way that using the ZIP and printing concurrently is permitted is also TRUE. Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET is now needed to force chipset detection. If set, the flags 0x40 still avoid detection at boot. Port of the pcf(4) driver to the newbus system (was previously directly connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00
static devclass_t pps_devclass;
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
A bunch of nits from bde. Make the name "pps" all over the place. Remove the hardcoded 10us offset, use sawtooth for it.
1998-02-15 14:54:09 +00:00
static d_open_t ppsopen;
static d_close_t ppsclose;
This is a prototype implementation of the draft-mogul-pps-api-##.txt paper. It will be updated along with the draft and possible subsequent standard. The ppbus based pps driver is updated to implement this API.
1998-06-07 19:44:22 +00:00
static d_ioctl_t ppsioctl;
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
This commit should be a extensive NO-OP: Reformat and initialize correctly all "struct cdevsw". Initialize the d_maj and d_bmaj fields. The d_reset field was not removed, although it is never used. I used a program to do most of this, so all the files now use the same consistent format. Please keep it that way. Vinum and i4b not modified, patches emailed to respective authors.
1999-05-30 16:53:49 +00:00
static struct cdevsw pps_cdevsw = {
Device megapatch 4/6: Introduce d_version field in struct cdevsw, this must always be initialized to D_VERSION. Flip sense of D_NOGIANT flag to D_NEEDGIANT, this involves removing four D_NOGIANT flags and adding 145 D_NEEDGIANT flags.
2004-02-21 21:10:55 +00:00
.d_version = D_VERSION,
Gigacommit to improve device-driver source compatibility between branches: Initialize struct cdevsw using C99 sparse initializtion and remove all initializations to default values. This patch is automatically generated and has been tested by compiling LINT with all the fields in struct cdevsw in reverse order on alpha, sparc64 and i386. Approved by: re(scottl)
2003-03-03 12:15:54 +00:00
.d_open = ppsopen,
.d_close = ppsclose,
.d_ioctl = ppsioctl,
.d_name = PPS_NAME,
This commit should be a extensive NO-OP: Reformat and initialize correctly all "struct cdevsw". Initialize the d_maj and d_bmaj fields. The d_reset field was not removed, although it is never used. I used a program to do most of this, so all the files now use the same consistent format. Please keep it that way. Vinum and i4b not modified, patches emailed to respective authors.
1999-05-30 16:53:49 +00:00
};
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
Some newbus-inspired tidy-ups. Use device_identify() rather than scanning the resource table to locate children. The 'at ppbus?' can go again. Remove a few #if Nxxx > 0' type things, config arranges this for us. Move the newbus method glue next to the DRIVER_MODULE() stuff so we don't need extra prototypes. Don't set device descriptions until after the possibility of the probe returning an error. Remove all cdevsw_add() calls, all the drivers that did this also use make_dev() correctly, so it's not required. A couple of other minor nits.
2000-01-23 14:41:04 +00:00
static void
ppsidentify(driver_t *driver, device_t parent)
{
Prevent the strange situation that after each load/unload of a ppbus device, the device is probed multiple times (so each device is detected N times after unloading/loading the module N-1 times). The real fix is (quote Doug and Warner): > : In an ideal world, there should be some kind of BUS_UNIDENTIFY method > : which a driver could use to delete the devices it created in > : BUS_IDENTIFY. > > Or the bus would have a driver deleted routine that got called and it > would remove all instances of the devclass attached to it. Reviewed by: Doug Rabson & Warner Losh
2004-03-18 21:10:11 +00:00
device_t dev;
dev = device_find_child(parent, PPS_NAME, 0);
if (!dev)
BUS_ADD_CHILD(parent, 0, PPS_NAME, -1);
Some newbus-inspired tidy-ups. Use device_identify() rather than scanning the resource table to locate children. The 'at ppbus?' can go again. Remove a few #if Nxxx > 0' type things, config arranges this for us. Move the newbus method glue next to the DRIVER_MODULE() stuff so we don't need extra prototypes. Don't set device descriptions until after the possibility of the probe returning an error. Remove all cdevsw_add() calls, all the drivers that did this also use make_dev() correctly, so it's not required. A couple of other minor nits.
2000-01-23 14:41:04 +00:00
}
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
static int
ppstry(device_t ppbus, int send, int expect)
{
int i;
ppb_wdtr(ppbus, send);
i = ppb_rdtr(ppbus);
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
PRVERBOSE("S: %02x E: %02x G: %02x\n", send, expect, i);
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
return (i != expect);
}
Port of ppbus standalone framework to the newbus system. Note1: the correct interrupt level is invoked correctly for each driver. For this purpose, drivers request the bus before being able to call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus core when drivers release it. Thus, when BUS_SETUP_INTR is called at ppbus driver level, ppbus checks that the caller owns the bus and stores the interrupt handler cookie (in order to unregister it later). Printing is impossible while plip link is up is still TRUE. vpo (ZIP driver) and lpt are make in such a way that using the ZIP and printing concurrently is permitted is also TRUE. Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET is now needed to force chipset detection. If set, the flags 0x40 still avoid detection at boot. Port of the pcf(4) driver to the newbus system (was previously directly connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00
static int
ppsprobe(device_t ppsdev)
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
{
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
device_set_desc(ppsdev, "Pulse per second Timing Interface");
return (0);
}
static int
ppsattach(device_t dev)
{
struct pps_data *sc = DEVTOSOFTC(dev);
device_t ppbus = device_get_parent(dev);
Do the dreaded s/dev_t/struct cdev */ Bump __FreeBSD_version accordingly.
2004-06-16 09:47:26 +00:00
struct cdev *d;
Warning fixes for sizeof(int) != sizeof(void *).
2002-11-07 17:25:33 +00:00
intptr_t irq;
int i, unit, zero = 0;
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
Make the pps interrupt register as MPSAFE and FAST. Use a spin lock to syncrhonize access to the data as a result. This makes the pps less likely to miss the 1ms pulse that I'm feeding it, but not entirely reliable yet on my 133MHz P5. Reviewed by: phk
2005-03-11 07:03:46 +00:00
mtx_init(&sc->mtx, device_get_nameunit(dev), "pps", MTX_SPIN);
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
/* retrieve the ppbus irq */
BUS_READ_IVAR(ppbus, dev, PPBUS_IVAR_IRQ, &irq);
if (irq > 0) {
/* declare our interrupt handler */
sc->intr_resource = bus_alloc_resource(dev, SYS_RES_IRQ,
&zero, irq, irq, 1, RF_SHAREABLE);
}
/* interrupts seem mandatory */
if (sc->intr_resource == NULL)
return (ENXIO);
Simplify cdevsw registration. The cdevsw_add() function now finds the major number(s) in the struct cdevsw passed to it. cdevsw_add_generic() is no longer needed, cdevsw_add() does the same thing. cdevsw_add() will print an message if the d_maj field looks bogus. Remove nblkdev and nchrdev variables. Most places they were used bogusly. Instead check a dev_t for validity by seeing if devsw() or bdevsw() returns NULL. Move bdevsw() and devsw() functions to kern/kern_conf.c Bump __FreeBSD_version to 400006 This commit removes: 72 bogus makedev() calls 26 bogus SYSINIT functions if_xe.c bogusly accessed cdevsw[], author/maintainer please fix. I4b and vinum not changed. Patches emailed to authors. LINT probably broken until they catch up.
1999-05-31 11:29:30 +00:00
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
sc->ppsdev = dev;
sc->ppbus = ppbus;
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
unit = device_get_unit(ppbus);
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
d = make_dev(&pps_cdevsw, unit,
Synchronize mode for ppsX devices to that found previously in MAKEDEV for consistency. Submitted by: kris
2002-12-27 16:34:12 +00:00
UID_ROOT, GID_WHEEL, 0600, PPS_NAME "%d", unit);
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
sc->devs[0] = d;
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
sc->pps[0].ppscap = PPS_CAPTUREASSERT | PPS_ECHOASSERT;
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
d->si_drv1 = sc;
d->si_drv2 = (void*)0;
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
pps_init(&sc->pps[0]);
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
if (ppb_request_bus(ppbus, dev, PPB_DONTWAIT))
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
return (0);
do {
i = ppb_set_mode(sc->ppbus, PPB_EPP);
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
PRVERBOSE("EPP: %d %d\n", i, PPB_IN_EPP_MODE(sc->ppbus));
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
if (i == -1)
break;
i = 0;
ppb_wctr(ppbus, i);
if (ppstry(ppbus, 0x00, 0x00))
break;
if (ppstry(ppbus, 0x55, 0x55))
break;
if (ppstry(ppbus, 0xaa, 0xaa))
break;
if (ppstry(ppbus, 0xff, 0xff))
break;
i = IRQENABLE | PCD | STROBE | nINIT | SELECTIN;
ppb_wctr(ppbus, i);
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
PRVERBOSE("CTR = %02x (%02x)\n", ppb_rctr(ppbus), i);
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
if (ppstry(ppbus, 0x00, 0x00))
break;
if (ppstry(ppbus, 0x55, 0x00))
break;
if (ppstry(ppbus, 0xaa, 0x00))
break;
if (ppstry(ppbus, 0xff, 0x00))
break;
i = IRQENABLE | PCD | nINIT | SELECTIN;
ppb_wctr(ppbus, i);
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
PRVERBOSE("CTR = %02x (%02x)\n", ppb_rctr(ppbus), i);
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
ppstry(ppbus, 0x00, 0xff);
ppstry(ppbus, 0x55, 0xff);
ppstry(ppbus, 0xaa, 0xff);
ppstry(ppbus, 0xff, 0xff);
for (i = 1; i < 9; i++) {
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
d = make_dev(&pps_cdevsw, unit + 0x10000 * i,
Synchronize mode for ppsX devices to that found previously in MAKEDEV for consistency. Submitted by: kris
2002-12-27 16:34:12 +00:00
UID_ROOT, GID_WHEEL, 0600, PPS_NAME "%db%d", unit, i - 1);
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
sc->devs[i] = d;
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
sc->pps[i].ppscap = PPS_CAPTUREASSERT | PPS_CAPTURECLEAR;
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
d->si_drv1 = sc;
Warning fixes for sizeof(int) != sizeof(void *).
2002-11-07 17:25:33 +00:00
d->si_drv2 = (void *)(intptr_t)i;
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
pps_init(&sc->pps[i]);
}
} while (0);
i = ppb_set_mode(sc->ppbus, PPB_COMPATIBLE);
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
ppb_release_bus(ppbus, dev);
Port of ppbus standalone framework to the newbus system. Note1: the correct interrupt level is invoked correctly for each driver. For this purpose, drivers request the bus before being able to call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus core when drivers release it. Thus, when BUS_SETUP_INTR is called at ppbus driver level, ppbus checks that the caller owns the bus and stores the interrupt handler cookie (in order to unregister it later). Printing is impossible while plip link is up is still TRUE. vpo (ZIP driver) and lpt are make in such a way that using the ZIP and printing concurrently is permitted is also TRUE. Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET is now needed to force chipset detection. If set, the flags 0x40 still avoid detection at boot. Port of the pcf(4) driver to the newbus system (was previously directly connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00
return (0);
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
}
static int
Do the dreaded s/dev_t/struct cdev */ Bump __FreeBSD_version accordingly.
2004-06-16 09:47:26 +00:00
ppsopen(struct cdev *dev, int flags, int fmt, struct thread *td)
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
{
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
struct pps_data *sc = dev->si_drv1;
Warning fixes for sizeof(int) != sizeof(void *).
2002-11-07 17:25:33 +00:00
int subdev = (intptr_t)dev->si_drv2;
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
int error, i;
if (!sc->busy) {
device_t ppsdev = sc->ppsdev;
device_t ppbus = sc->ppbus;
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
Port of ppbus standalone framework to the newbus system. Note1: the correct interrupt level is invoked correctly for each driver. For this purpose, drivers request the bus before being able to call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus core when drivers release it. Thus, when BUS_SETUP_INTR is called at ppbus driver level, ppbus checks that the caller owns the bus and stores the interrupt handler cookie (in order to unregister it later). Printing is impossible while plip link is up is still TRUE. vpo (ZIP driver) and lpt are make in such a way that using the ZIP and printing concurrently is permitted is also TRUE. Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET is now needed to force chipset detection. If set, the flags 0x40 still avoid detection at boot. Port of the pcf(4) driver to the newbus system (was previously directly connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00
if (ppb_request_bus(ppbus, ppsdev, PPB_WAIT|PPB_INTR))
Allow multiple opens.
1999-04-25 08:58:10 +00:00
return (EINTR);
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
Port of ppbus standalone framework to the newbus system. Note1: the correct interrupt level is invoked correctly for each driver. For this purpose, drivers request the bus before being able to call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus core when drivers release it. Thus, when BUS_SETUP_INTR is called at ppbus driver level, ppbus checks that the caller owns the bus and stores the interrupt handler cookie (in order to unregister it later). Printing is impossible while plip link is up is still TRUE. vpo (ZIP driver) and lpt are make in such a way that using the ZIP and printing concurrently is permitted is also TRUE. Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET is now needed to force chipset detection. If set, the flags 0x40 still avoid detection at boot. Port of the pcf(4) driver to the newbus system (was previously directly connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00
/* attach the interrupt handler */
Make the pps interrupt register as MPSAFE and FAST. Use a spin lock to syncrhonize access to the data as a result. This makes the pps less likely to miss the 1ms pulse that I'm feeding it, but not entirely reliable yet on my 133MHz P5. Reviewed by: phk
2005-03-11 07:03:46 +00:00
if ((error = bus_setup_intr(ppsdev, sc->intr_resource,
(INTR_TYPE_TTY | INTR_MPSAFE | INTR_FAST), ppsintr,
In ppsintr, we needed ppsdev to get to the softc and nothing else. Save a memory dereference in the ISR by passing this in directly. Calling pps_capture is MP safe for all other operations on struct pps_state, so there's no need to aquire the lock before we do this, even from a fast ISR. Avoid dereferencing sc->ppbus until after pps_capture is called as well. These actions reduce somewhat the cache effects that cause variance in interrupt times. On an especially slow test machine (300MHz Cyrix GXm), this reduces the interrupt latency about about 10% (from 21us to 19us) and helps a little with the variance (although most of the variance seems to be caused by lots of interrupt masking). This also happens fixes one or two of bde's style issues.
2005-04-14 15:56:10 +00:00
sc, &sc->intr_cookie))) {
Port of ppbus standalone framework to the newbus system. Note1: the correct interrupt level is invoked correctly for each driver. For this purpose, drivers request the bus before being able to call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus core when drivers release it. Thus, when BUS_SETUP_INTR is called at ppbus driver level, ppbus checks that the caller owns the bus and stores the interrupt handler cookie (in order to unregister it later). Printing is impossible while plip link is up is still TRUE. vpo (ZIP driver) and lpt are make in such a way that using the ZIP and printing concurrently is permitted is also TRUE. Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET is now needed to force chipset detection. If set, the flags 0x40 still avoid detection at boot. Port of the pcf(4) driver to the newbus system (was previously directly connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00
ppb_release_bus(ppbus, ppsdev);
return (error);
}
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
i = ppb_set_mode(sc->ppbus, PPB_PS2);
Make this driver a better citizen by moving dev creation and other initialization into attach from probe. Also hide a few printfs behind a bootverbose. approved in principle by: phk
2001-12-19 19:37:31 +00:00
PRVERBOSE("EPP: %d %d\n", i, PPB_IN_EPP_MODE(sc->ppbus));
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
i = IRQENABLE | PCD | nINIT | SELECTIN;
ppb_wctr(ppbus, i);
Kill trailing white space
2005-03-10 22:21:16 +00:00
}
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
if (subdev > 0 && !(sc->busy & ~1)) {
sc->timeout = timeout(ppshcpoll, sc, 1);
sc->lastdata = ppb_rdtr(sc->ppbus);
}
sc->busy |= (1 << subdev);
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
return(0);
}
static int
Do the dreaded s/dev_t/struct cdev */ Bump __FreeBSD_version accordingly.
2004-06-16 09:47:26 +00:00
ppsclose(struct cdev *dev, int flags, int fmt, struct thread *td)
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
{
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
struct pps_data *sc = dev->si_drv1;
Warning fixes for sizeof(int) != sizeof(void *).
2002-11-07 17:25:33 +00:00
int subdev = (intptr_t)dev->si_drv2;
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
sc->pps[subdev].ppsparam.mode = 0; /* PHK ??? */
sc->busy &= ~(1 << subdev);
Kill trailing white space
2005-03-10 22:21:16 +00:00
if (subdev > 0 && !(sc->busy & ~1))
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
untimeout(ppshcpoll, sc, sc->timeout);
if (!sc->busy) {
device_t ppsdev = sc->ppsdev;
device_t ppbus = sc->ppbus;
ppb_wdtr(ppbus, 0);
ppb_wctr(ppbus, 0);
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
/* Note: the interrupt handler is automatically detached */
ppb_set_mode(ppbus, PPB_COMPATIBLE);
ppb_release_bus(ppbus, ppsdev);
}
return(0);
}
Distinguish EPP address/data register. Add EPP address register access to ppi. Change microseq offsets. Previously, offsets of the program counter where added to the index of the current microinstruction. Make them rely on the index of the next executed microinstruction. Suggested by: Luigi Rizzo <luigi@labinfo.iet.unipi.it>
1999-01-30 15:35:39 +00:00
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
static void
ppshcpoll(void *arg)
{
struct pps_data *sc = arg;
int i, j, k, l;
Distinguish EPP address/data register. Add EPP address register access to ppi. Change microseq offsets. Previously, offsets of the program counter where added to the index of the current microinstruction. Make them rely on the index of the next executed microinstruction. Suggested by: Luigi Rizzo <luigi@labinfo.iet.unipi.it>
1999-01-30 15:35:39 +00:00
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
if (!(sc->busy & ~1))
return;
When locking a MTX_SPIN, one needs to use mtx_lock_spin. Lock the timeout routine as well. Submitted by: bde
2005-03-17 20:45:24 +00:00
mtx_lock_spin(&sc->mtx);
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
sc->timeout = timeout(ppshcpoll, sc, 1);
i = ppb_rdtr(sc->ppbus);
if (i == sc->lastdata)
return;
l = sc->lastdata ^ i;
k = 1;
for (j = 1; j < 9; j ++) {
Simplify the RFC2783 and PPS_SYNC timestamp collection API.
2002-04-26 20:24:28 +00:00
if (l & k) {
pps_capture(&sc->pps[j]);
pps_event(&sc->pps[j],
i & k ? PPS_CAPTUREASSERT : PPS_CAPTURECLEAR);
}
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
k += k;
}
sc->lastdata = i;
When locking a MTX_SPIN, one needs to use mtx_lock_spin. Lock the timeout routine as well. Submitted by: bde
2005-03-17 20:45:24 +00:00
mtx_unlock_spin(&sc->mtx);
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
}
static void
Port of ppbus standalone framework to the newbus system. Note1: the correct interrupt level is invoked correctly for each driver. For this purpose, drivers request the bus before being able to call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus core when drivers release it. Thus, when BUS_SETUP_INTR is called at ppbus driver level, ppbus checks that the caller owns the bus and stores the interrupt handler cookie (in order to unregister it later). Printing is impossible while plip link is up is still TRUE. vpo (ZIP driver) and lpt are make in such a way that using the ZIP and printing concurrently is permitted is also TRUE. Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET is now needed to force chipset detection. If set, the flags 0x40 still avoid detection at boot. Port of the pcf(4) driver to the newbus system (was previously directly connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00
ppsintr(void *arg)
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
{
In ppsintr, we needed ppsdev to get to the softc and nothing else. Save a memory dereference in the ISR by passing this in directly. Calling pps_capture is MP safe for all other operations on struct pps_state, so there's no need to aquire the lock before we do this, even from a fast ISR. Avoid dereferencing sc->ppbus until after pps_capture is called as well. These actions reduce somewhat the cache effects that cause variance in interrupt times. On an especially slow test machine (300MHz Cyrix GXm), this reduces the interrupt latency about about 10% (from 21us to 19us) and helps a little with the variance (although most of the variance seems to be caused by lots of interrupt masking). This also happens fixes one or two of bde's style issues.
2005-04-14 15:56:10 +00:00
struct pps_data *sc = (struct pps_data *)arg;
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
Simplify the RFC2783 and PPS_SYNC timestamp collection API.
2002-04-26 20:24:28 +00:00
pps_capture(&sc->pps[0]);
In ppsintr, we needed ppsdev to get to the softc and nothing else. Save a memory dereference in the ISR by passing this in directly. Calling pps_capture is MP safe for all other operations on struct pps_state, so there's no need to aquire the lock before we do this, even from a fast ISR. Avoid dereferencing sc->ppbus until after pps_capture is called as well. These actions reduce somewhat the cache effects that cause variance in interrupt times. On an especially slow test machine (300MHz Cyrix GXm), this reduces the interrupt latency about about 10% (from 21us to 19us) and helps a little with the variance (although most of the variance seems to be caused by lots of interrupt masking). This also happens fixes one or two of bde's style issues.
2005-04-14 15:56:10 +00:00
if (!(ppb_rstr(sc->ppbus) & nACK))
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
return;
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
if (sc->pps[0].ppsparam.mode & PPS_ECHOASSERT)
In ppsintr, we needed ppsdev to get to the softc and nothing else. Save a memory dereference in the ISR by passing this in directly. Calling pps_capture is MP safe for all other operations on struct pps_state, so there's no need to aquire the lock before we do this, even from a fast ISR. Avoid dereferencing sc->ppbus until after pps_capture is called as well. These actions reduce somewhat the cache effects that cause variance in interrupt times. On an especially slow test machine (300MHz Cyrix GXm), this reduces the interrupt latency about about 10% (from 21us to 19us) and helps a little with the variance (although most of the variance seems to be caused by lots of interrupt masking). This also happens fixes one or two of bde's style issues.
2005-04-14 15:56:10 +00:00
ppb_wctr(sc->ppbus, IRQENABLE | AUTOFEED);
mtx_lock_spin(&sc->mtx);
Simplify the RFC2783 and PPS_SYNC timestamp collection API.
2002-04-26 20:24:28 +00:00
pps_event(&sc->pps[0], PPS_CAPTUREASSERT);
When locking a MTX_SPIN, one needs to use mtx_lock_spin. Lock the timeout routine as well. Submitted by: bde
2005-03-17 20:45:24 +00:00
mtx_unlock_spin(&sc->mtx);
In ppsintr, we needed ppsdev to get to the softc and nothing else. Save a memory dereference in the ISR by passing this in directly. Calling pps_capture is MP safe for all other operations on struct pps_state, so there's no need to aquire the lock before we do this, even from a fast ISR. Avoid dereferencing sc->ppbus until after pps_capture is called as well. These actions reduce somewhat the cache effects that cause variance in interrupt times. On an especially slow test machine (300MHz Cyrix GXm), this reduces the interrupt latency about about 10% (from 21us to 19us) and helps a little with the variance (although most of the variance seems to be caused by lots of interrupt masking). This also happens fixes one or two of bde's style issues.
2005-04-14 15:56:10 +00:00
if (sc->pps[0].ppsparam.mode & PPS_ECHOASSERT)
ppb_wctr(sc->ppbus, IRQENABLE);
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
}
This is a prototype implementation of the draft-mogul-pps-api-##.txt paper. It will be updated along with the draft and possible subsequent standard. The ppbus based pps driver is updated to implement this API.
1998-06-07 19:44:22 +00:00
static int
Do the dreaded s/dev_t/struct cdev */ Bump __FreeBSD_version accordingly.
2004-06-16 09:47:26 +00:00
ppsioctl(struct cdev *dev, u_long cmd, caddr_t data, int flags, struct thread *td)
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
{
Give the pps driver an additional 8 inputs if we can persuade the ppc to go into EPP mode. These 8 inputs are timestamped in polled loop so their resolution will be nanoseconds but their granularity will only be 1/hz.
2001-09-22 16:34:59 +00:00
struct pps_data *sc = dev->si_drv1;
Warning fixes for sizeof(int) != sizeof(void *).
2002-11-07 17:25:33 +00:00
int subdev = (intptr_t)dev->si_drv2;
Make the pps interrupt register as MPSAFE and FAST. Use a spin lock to syncrhonize access to the data as a result. This makes the pps less likely to miss the 1ms pulse that I'm feeding it, but not entirely reliable yet on my 133MHz P5. Reviewed by: phk
2005-03-11 07:03:46 +00:00
int err;
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
When locking a MTX_SPIN, one needs to use mtx_lock_spin. Lock the timeout routine as well. Submitted by: bde
2005-03-17 20:45:24 +00:00
mtx_lock_spin(&sc->mtx);
Make the pps interrupt register as MPSAFE and FAST. Use a spin lock to syncrhonize access to the data as a result. This makes the pps less likely to miss the 1ms pulse that I'm feeding it, but not entirely reliable yet on my 133MHz P5. Reviewed by: phk
2005-03-11 07:03:46 +00:00
err = pps_ioctl(cmd, data, &sc->pps[subdev]);
When locking a MTX_SPIN, one needs to use mtx_lock_spin. Lock the timeout routine as well. Submitted by: bde
2005-03-17 20:45:24 +00:00
mtx_unlock_spin(&sc->mtx);
Make the pps interrupt register as MPSAFE and FAST. Use a spin lock to syncrhonize access to the data as a result. This makes the pps less likely to miss the 1ms pulse that I'm feeding it, but not entirely reliable yet on my 133MHz P5. Reviewed by: phk
2005-03-11 07:03:46 +00:00
return (err);
Add a skelleton pulse-per-second timing driver. This will become more useful when I get my timecounter changes past the Bruce-filter.
1998-02-13 13:00:02 +00:00
}
Some newbus-inspired tidy-ups. Use device_identify() rather than scanning the resource table to locate children. The 'at ppbus?' can go again. Remove a few #if Nxxx > 0' type things, config arranges this for us. Move the newbus method glue next to the DRIVER_MODULE() stuff so we don't need extra prototypes. Don't set device descriptions until after the possibility of the probe returning an error. Remove all cdevsw_add() calls, all the drivers that did this also use make_dev() correctly, so it's not required. A couple of other minor nits.
2000-01-23 14:41:04 +00:00
static device_method_t pps_methods[] = {
/* device interface */
DEVMETHOD(device_identify, ppsidentify),
DEVMETHOD(device_probe, ppsprobe),
DEVMETHOD(device_attach, ppsattach),
{ 0, 0 }
};
static driver_t pps_driver = {
PPS_NAME,
pps_methods,
sizeof(struct pps_data),
};
Port of ppbus standalone framework to the newbus system. Note1: the correct interrupt level is invoked correctly for each driver. For this purpose, drivers request the bus before being able to call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus core when drivers release it. Thus, when BUS_SETUP_INTR is called at ppbus driver level, ppbus checks that the caller owns the bus and stores the interrupt handler cookie (in order to unregister it later). Printing is impossible while plip link is up is still TRUE. vpo (ZIP driver) and lpt are make in such a way that using the ZIP and printing concurrently is permitted is also TRUE. Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET is now needed to force chipset detection. If set, the flags 0x40 still avoid detection at boot. Port of the pcf(4) driver to the newbus system (was previously directly connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00
DRIVER_MODULE(pps, ppbus, pps_driver, pps_devclass, 0, 0);
Add missing MODULE_DEPEND() so that ppbus.ko and these .ko's can be loaded dynamically.
2005-12-21 10:54:47 +00:00
MODULE_DEPEND(pps, ppbus, 1, 1, 1);
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