Commit Graph

6 Commits

Author SHA1 Message Date
Marius Strobl
410f3d914e - Add an IVAR for retrieving the interrupt group number of the parent Sbus
device and which also applies to the children. This is very usefull for
  drivers for the various subordinate busses so they don't need to fiddle
  with the OFW node of their parent themselves. As SBus busses hang of the
  nexus and we don't use the ofw_bus interface for nexus devices, yet, this
  would also require special knowledge about this in the drivers for the
  SBus children which these shouldn't need to have.
  This includes switching to use an unshifted IGN in the sc_ign member of
  the sbus(4) softc internally.
- For SBus child devices where there are variants that are actually split
  split into two SBus devices (as opposed to the first half of the device
  being a SBus device and the second half hanging off of the first one)
  like 'auxio' and 'SUNW,fdtwo' or 'dma' and 'esp' probe the SBus device
  which is a prerequisite to the driver attaching to the second one with
  a lower order. This saves us from dealing with different probe orders
  in the respective device drivers which generally is more hackish.
- Remove a stale comment about the 'specials' array above the attaching
  of the child devices. This is a remnant of the NetBSD/sparc origin of
  this code. There the 'specials' array is also used to probe certain
  devices which are prerequisites to others first. Why NetBSD soley
  relies on the devices having the expected order in the OFW tree on
  sparc64 isn't clear to me, as far as I can tell OFW doesn't guaranteed
  such things.
2005-05-19 14:47:31 +00:00
Warner Losh
60727d8b86 /* -> /*- for license, minor formatting changes 2005-01-07 02:29:27 +00:00
Marius Strobl
26280d88d7 - Introduce an ofw_bus kobj-interface for retrieving the OFW node and a
subset ("compatible", "device_type", "model" and "name") of the standard
  properties in drivers for devices on Open Firmware supported busses. The
  standard properties "reg", "interrupts" und "address" are not covered by
  this interface because they are only of interest in the respective bridge
  code. There's a remaining standard property "status" which is unclear how
  to support properly but which also isn't used in FreeBSD at present.
  This ofw_bus kobj-interface allows to replace the various (ebus_get_node(),
  ofw_pci_get_node(), etc.) and partially inconsistent (central_get_type()
  vs. sbus_get_device_type(), etc.) existing IVAR ones with a common one.
  This in turn allows to simplify and remove code-duplication in drivers for
  devices that can hang off of more than one OFW supported bus.
- Convert the sparc64 Central, EBus, FHC, PCI and SBus bus drivers and the
  drivers for their children to use the ofw_bus kobj-interface. The IVAR-
  interfaces of the Central, EBus and FHC are entirely replaced by this. The
  PCI bus driver used its own kobj-interface and now also uses the ofw_bus
  one. The IVARs special to the SBus, e.g. for retrieving the burst size,
  remain.
  Beware: this causes an ABI-breakage for modules of drivers which used the
  IVAR-interfaces, i.e. esp(4), hme(4), isp(4) and uart(4), which need to be
  recompiled.
  The style-inconsistencies introduced in some of the bus drivers will be
  fixed by tmm@ in a generic clean-up of the respective drivers later (he
  requested to add the changes in the "new" style).
- Convert the powerpc MacIO bus driver and the drivers for its children to
  use the ofw_bus kobj-interface. This invloves removing the IVARs related
  to the "reg" property which were unused and a leftover from the NetBSD
  origini of the code. There's no ABI-breakage caused by this because none
  of these driver are currently built as modules.
  There are other powerpc bus drivers which can be converted to the ofw_bus
  kobj-interface, e.g. the PCI bus driver, which should be done together
  with converting powerpc to use the OFW PCI code from sparc64.
- Make the SBus and FHC front-end of zs(4) and the sparc64 eeprom(4) take
  advantage of the ofw_bus kobj-interface and simplify them a bit.

Reviewed by:	grehan, tmm
Approved by:	re (scottl)
Discussed with:	tmm
Tested with:	Sun AX1105, AXe, Ultra 2, Ultra 60; PPC cross-build on i386
2004-08-12 17:41:33 +00:00
Warner Losh
2fcbca0d85 Remove advertising clause from University of California Regent's
license, per letter dated July 22, 1999 and email from Peter Wemm,
Alan Cox and Robert Watson.

Approved by: core, peter, alc, rwatson
2004-04-07 05:00:01 +00:00
Maxime Henrion
44b4810fbe Typo fix.
Reviewed by:	tmm
2002-08-19 22:57:32 +00:00
Thomas Moestl
633541ac6e Add support for the SBus, which is used in early Sun UltraSPARC machines.
Ported from NetBSD.
2002-02-13 16:11:36 +00:00