Commit Graph

10 Commits

Author SHA1 Message Date
Zbigniew Bodek
4b3d916086 Introduce ofw_bus_reg_to_rl() to replace part of common bus code
Instead of reusing the same reg parsing code, create one, common function
that puts reg contents to the resource list. Address cells and size cells
are passed rather than acquired here so that any bus can have different
default values.

Obtained from:   Semihalf
Reviewed by:     andrew, ian, nwhitehorn
Sponsored by:    The FreeBSD Foundation
2015-01-13 00:00:09 +00:00
Zbigniew Bodek
76a8ef267d Avoid panic in ofwbus caused by not released resource list entry
After resource allocation and release, resource list entry
stays non-NULL. This causes panic in ofwbus_alloc_resource()
on subsequent resource allocation.
Clean appropriate list entry on release to avoid this.

Obtained from:	Semihalf
Reviewed by:	ian
Sponsored by:	The FreeBSD Foundation
2014-11-07 19:34:10 +00:00
Ian Lepore
c47d4cde39 Replace multiple nearly-identical copies of code to walk through an FDT
node's interrupts=<...> property creating resource list entries with a
single common implementation.  This change makes ofw_bus_intr_to_rl() the
one true copy of that code and removes the copies of it from other places.

This also adds handling of the interrupts-extended property, which allows
specifying multiple interrupts for a node where each interrupt can have a
separate interrupt-parent.  The bindings for this state that the property
cells contain an xref phandle to the interrupt parent followed by whatever
interrupt info that parent normally expects.  This leads to having a
variable number of icells per interrupt in the property.  For example you
could have <&intc1 1 &intc2 26 9 0 &intc3 9 4>.

Differential Revision: https://reviews.freebsd.org/D803
2014-09-25 15:02:33 +00:00
Ian Lepore
752ba93078 Rename OF_xref_phandle() to OF_node_from_xref() and add a new function
that provides the inverse translation, OF_xref_from_node().

Discussed with:	nwhitehorn
2014-09-01 18:51:01 +00:00
Ian Lepore
c654477e64 Handle various ways that interrupt config data can be malformed by
warning and assuming more or less reasonable values.
2014-08-10 00:30:12 +00:00
Ian Lepore
1fb6bc18cb Use a separate variable for resource id, because 'i' may increment at a
rate greater than 1 on each iteration.
2014-08-10 00:23:57 +00:00
Ian Lepore
633dbf2e1b Adjust ofwbus and simplebus to attach at BUS_PASS_ORDER_MIDDLE, so that
a platform can attach some other bus first if necessary.
2014-08-05 17:32:47 +00:00
Ian Lepore
2d12d35cf8 Set ofwbus and simplebus to attach during BUS_PASS_BUS. 2014-08-05 16:31:03 +00:00
Nathan Whitehorn
e2fc1af45e OF_peer() in IEEE 1275 returns 0 if no peer exists, not -1. 2014-05-11 18:22:05 +00:00
Nathan Whitehorn
65d08437ef Move Open Firmware device root on PowerPC, ARM, and MIPS systems to
a sub-node of nexus (ofwbus) rather than direct attach under nexus. This
fixes FDT on x86 and will make coexistence with ACPI on ARM systems easier.
SPARC is unchanged.

Reviewed by:	imp, ian
2014-02-05 14:44:22 +00:00