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Replace the unknown driver with a nomatch method in the isa driver.

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This allows ISA PnP drivers to be dynamically loaded after the kernel
has booted.
This commit is contained in:
Doug Rabson 2000-06-25 09:19:02 +00:00
parent 15bbdecf2e
commit 328d36e934
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=62059
1 changed files with 70 additions and 71 deletions
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141
sys/isa/isa_common.c
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@ -501,8 +501,7 @@ isa_probe_children(device_t dev)
resource_list_alloc(rl, dev, child,
rle->type,
&rid,
0, ~0, 1,
0 /* !RF_ACTIVE */);
0, ~0, 1, 0);
}
}
}
@ -536,59 +535,85 @@ isa_add_child(device_t dev, int order, const char *name, int unit)
return child;
}
static void
static int
isa_print_resources(struct resource_list *rl, const char *name, int type,
int count, const char *format)
{
struct resource_list_entry *rle;
int printed;
int i;
int i, retval = 0;;
printed = 0;
for (i = 0; i < count; i++) {
rle = resource_list_find(rl, type, i);
if (rle) {
if (printed == 0)
printf(" %s ", name);
retval += printf(" %s ", name);
else if (printed > 0)
printf(",");
retval += printf(",");
printed++;
printf(format, rle->start);
retval += printf(format, rle->start);
if (rle->count > 1) {
printf("-");
printf(format, rle->start + rle->count - 1);
retval += printf("-");
retval += printf(format,
rle->start + rle->count - 1);
}
} else if (i > 3) {
/* check the first few regardless */
break;
}
}
return retval;
}
static int
isa_print_child(device_t bus, device_t dev)
isa_print_all_resources(device_t dev)
{
struct isa_device *idev = DEVTOISA(dev);
struct resource_list *rl = &idev->id_resources;
int retval = 0;
retval += bus_print_child_header(bus, dev);
if (SLIST_FIRST(rl) || device_get_flags(dev))
retval += printf(" at");
isa_print_resources(rl, "port", SYS_RES_IOPORT, ISA_NPORT, "%#lx");
isa_print_resources(rl, "iomem", SYS_RES_MEMORY, ISA_NMEM, "%#lx");
isa_print_resources(rl, "irq", SYS_RES_IRQ, ISA_NIRQ, "%ld");
isa_print_resources(rl, "drq", SYS_RES_DRQ, ISA_NDRQ, "%ld");
retval += isa_print_resources(rl, "port", SYS_RES_IOPORT,
ISA_NPORT, "%#lx");
retval += isa_print_resources(rl, "iomem", SYS_RES_MEMORY,
ISA_NMEM, "%#lx");
retval += isa_print_resources(rl, "irq", SYS_RES_IRQ,
ISA_NIRQ, "%ld");
retval += isa_print_resources(rl, "drq", SYS_RES_DRQ,
ISA_NDRQ, "%ld");
if (device_get_flags(dev))
retval += printf(" flags %#x", device_get_flags(dev));
return retval;
}
static int
isa_print_child(device_t bus, device_t dev)
{
int retval = 0;
retval += bus_print_child_header(bus, dev);
retval += isa_print_all_resources(dev);
retval += bus_print_child_footer(bus, dev);
return (retval);
}
static void
isa_probe_nomatch(device_t dev, device_t child)
{
device_printf(dev, "<%s> found",
pnp_eisaformat(isa_get_logicalid(child)));
if (bootverbose)
isa_print_all_resources(child);
printf("\n");
return;
}
static int
isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result)
{
@ -771,12 +796,19 @@ isa_child_detached(device_t dev, device_t child)
struct resource_list *rl = &idev->id_resources;
struct resource_list_entry *rle;
SLIST_FOREACH(rle, &idev->id_resources, link) {
if (rle->res)
resource_list_release(rl, dev, child,
rle->type,
rle->rid,
rle->res);
if (TAILQ_FIRST(&idev->id_configs)) {
/*
* Claim any unallocated resources to keep other
* devices from using them.
*/
SLIST_FOREACH(rle, rl, link) {
if (!rle->res) {
int rid = rle->rid;
resource_list_alloc(rl, dev, child,
rle->type,
&rid, 0, ~0, 1, 0);
}
}
}
}
@ -807,6 +839,20 @@ isa_driver_added(device_t dev, driver_t *driver)
if (device_get_state(child) != DS_NOTPRESENT)
continue;
if (!device_is_enabled(child))
continue;
/*
* Free resources which we were holding on behalf of
* the device.
*/
SLIST_FOREACH(rle, &idev->id_resources, link) {
if (rle->res)
resource_list_release(rl, dev, child,
rle->type,
rle->rid,
rle->res);
}
if (TAILQ_FIRST(&idev->id_configs))
if (!isa_assign_resources(child))
@ -824,9 +870,7 @@ isa_driver_added(device_t dev, driver_t *driver)
int rid = rle->rid;
resource_list_alloc(rl, dev, child,
rle->type,
&rid,
0, ~0, 1,
0 /* !RF_ACTIVE */);
&rid, 0, ~0, 1, 0);
}
}
}
@ -961,6 +1005,7 @@ static device_method_t isa_methods[] = {
/* Bus interface */
DEVMETHOD(bus_add_child, isa_add_child),
DEVMETHOD(bus_print_child, isa_print_child),
DEVMETHOD(bus_probe_nomatch, isa_probe_nomatch),
DEVMETHOD(bus_read_ivar, isa_read_ivar),
DEVMETHOD(bus_write_ivar, isa_write_ivar),
DEVMETHOD(bus_child_detached, isa_child_detached),
@ -996,49 +1041,3 @@ DRIVER_MODULE(isa, isab, isa_driver, isa_devclass, 0, 0);
#ifdef __i386__
DRIVER_MODULE(isa, nexus, isa_driver, isa_devclass, 0, 0);
#endif
/*
* A fallback driver for reporting un-matched pnp devices.
*/
static int
unknown_probe(device_t dev)
{
/*
* Only match pnp devices.
*/
if (isa_get_vendorid(dev) != 0)
return -100;
return ENXIO;
}
static int
unknown_attach(device_t dev)
{
return 0;
}
static int
unknown_detach(device_t dev)
{
return 0;
}
static device_method_t unknown_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, unknown_probe),
DEVMETHOD(device_attach, unknown_attach),
DEVMETHOD(device_detach, unknown_detach),
{ 0, 0 }
};
static driver_t unknown_driver = {
"unknown",
unknown_methods,
1, /* no softc */
};
static devclass_t unknown_devclass;
DRIVER_MODULE(unknown, isa, unknown_driver, unknown_devclass, 0, 0);