From c2251260be90b098d300f1452cc5cb46c5032282 Mon Sep 17 00:00:00 2001 From: jhb Date: Tue, 18 Nov 2008 21:01:54 +0000 Subject: Allow device hints to wire the unit numbers of devices. - An "at" hint now reserves a device name. - A new BUS_HINT_DEVICE_UNIT method is added to the bus interface. When determining the unit number of a device, this method is invoked to let the bus driver specify the unit of a device given a specific devclass. This is the only way a device can be given a name reserved via an "at" hint. - Implement BUS_HINT_DEVICE_UNIT() for the acpi(4) and isa(4) bus drivers. Both of these busses implement this by comparing the resources for a given hint device with the resources enumerated by ACPI/PnPBIOS and wire a unit if the hint resources are a subset of the "real" resources. - Use bus_hinted_children() for adding hinted devices on isa(4) busses now instead of doing it by hand. - Remove the unit kludging from sio(4) as it is no longer necessary. Prodding from: peter, imp OK'd by: marcel MFC after: 1 month --- sys/dev/sio/sio_pci.c | 31 ------------------------------- 1 file changed, 31 deletions(-) (limited to 'sys/dev/sio/sio_pci.c') diff --git a/sys/dev/sio/sio_pci.c b/sys/dev/sio/sio_pci.c index 459baa1..dc9b004 100644 --- a/sys/dev/sio/sio_pci.c +++ b/sys/dev/sio/sio_pci.c @@ -43,7 +43,6 @@ __FBSDID("$FreeBSD$"); #include static int sio_pci_attach(device_t dev); -static void sio_pci_kludge_unit(device_t dev); static int sio_pci_probe(device_t dev); static device_method_t sio_pci_methods[] = { @@ -101,39 +100,9 @@ sio_pci_attach(dev) id++; if (id->desc == NULL) return (ENXIO); - sio_pci_kludge_unit(dev); return (sioattach(dev, id->rid, 0UL)); } -/* - * Don't cut and paste this to other drivers. It is a horrible kludge - * which will fail to work and also be unnecessary in future versions. - */ -static void -sio_pci_kludge_unit(dev) - device_t dev; -{ - devclass_t dc; - int err; - int start; - int unit; - - unit = 0; - start = 0; - while (resource_int_value("sio", unit, "port", &start) == 0 && - start > 0) - unit++; - if (device_get_unit(dev) < unit) { - dc = device_get_devclass(dev); - while (devclass_get_device(dc, unit)) - unit++; - device_printf(dev, "moving to sio%d\n", unit); - err = device_set_unit(dev, unit); /* EVIL DO NOT COPY */ - if (err) - device_printf(dev, "error moving device %d\n", err); - } -} - static int sio_pci_probe(dev) device_t dev; -- cgit v1.1