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If PERIPH_1284 is not defined, don't even bother calling the BUS_*_INTR

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functions.

If it is defined, check whether bus_alloc_resource has succeeded. If it
hasn't, it is in polled mode. Mike Nowlin reports that this change makes
the geek port (whatever _that_ is :-) work again on his machine.

Submitted by:	Mike Nowlin <mike@argos.org>
This commit is contained in:
Nick Hibma 2000-05-07 20:46:49 +00:00
parent 8feb725eb1
commit c47eb96cb5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=60194
1 changed files with 15 additions and 9 deletions
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24
sys/dev/ppbus/ppi.c
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@ -68,8 +68,10 @@ struct ppi_data {
int ppi_mode; /* IEEE1284 mode */
char ppi_buffer[BUFSIZE];
#ifdef PERIPH_1284
struct resource *intr_resource; /* interrupt resource */
void *intr_cookie; /* interrupt registration cookie */
#endif /* PERIPH_1284 */
};
#define DEVTOSOFTC(dev) \
@ -163,20 +165,20 @@ ppi_probe(device_t dev)
static int
ppi_attach(device_t dev)
{
#ifdef PERIPH_1284
uintptr_t irq;
int zero = 0;
#endif /* PERIPH_1284 */
struct ppi_data *ppi = DEVTOSOFTC(dev);
#ifdef PERIPH_1284
/* retrive the irq */
BUS_READ_IVAR(device_get_parent(dev), dev, PPBUS_IVAR_IRQ, &irq);
/* declare our interrupt handler */
ppi->intr_resource = bus_alloc_resource(dev, SYS_RES_IRQ,
&zero, irq, irq, 1, RF_ACTIVE);
if (ppi->intr_resource == NULL) {
device_printf(dev, "can't allocate irq\n");
return (ENOMEM);
}
#endif /* PERIPH_1284 */
make_dev(&ppi_cdevsw, device_get_unit(dev), /* XXX cleanup */
UID_ROOT, GID_WHEEL,
@ -185,6 +187,7 @@ ppi_attach(device_t dev)
return (0);
}
#ifdef PERIPH_1284
/*
* Cable
* -----
@ -200,7 +203,6 @@ ppi_attach(device_t dev)
static void
ppiintr(void *arg)
{
#ifdef PERIPH_1284
device_t ppidev = (device_t)arg;
device_t ppbus = device_get_parent(ppidev);
struct ppi_data *ppi = DEVTOSOFTC(ppidev);
@ -251,10 +253,10 @@ ppiintr(void *arg)
}
ppi_enable_intr(ppidev);
#endif /* PERIPH_1284 */
return;
}
#endif /* PERIPH_1284 */
static int
ppiopen(dev_t dev, int flags, int fmt, struct proc *p)
@ -276,9 +278,13 @@ ppiopen(dev_t dev, int flags, int fmt, struct proc *p)
ppi->ppi_flags |= HAVE_PPBUS;
/* register our interrupt handler */
BUS_SETUP_INTR(device_get_parent(ppidev), ppidev, ppi->intr_resource,
INTR_TYPE_TTY, ppiintr, dev, &ppi->intr_cookie);
#ifdef PERIPH_1284
if (ppi->intr_resource) {
/* register our interrupt handler */
BUS_SETUP_INTR(device_get_parent(ppidev), ppidev, ppi->intr_resource,
INTR_TYPE_TTY, ppiintr, dev, &ppi->intr_cookie);
}
#endif /* PERIPH_1284 */
}
ppi->ppi_count += 1;