[POWERPC] Support for DCR based MPIC

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This patch implements support for DCR based MPIC implementations. Such
implementations have the MPIC_USES_DCR flag set and don't use the phys_addr
argument of mpic_alloc (they require a valid dcr mapping in the device node)

This version of the patch can use a little bif of cleanup still (I can
probably consolidate rb->dbase/doff, at least once I'm sure on how the
hardware is actually supposed to work vs. possible simulator issues) and
it should be possible to build a DCR-only version of the driver. I need
to cleanup a bit the CONFIG_* handling for that and probably introduce
CONFIG_MPIC_MMIO and CONFIG_MPIC_DCR.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

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Benjamin Herrenschmidt 2006-11-11 17:24:55 +11:00 • committed by Paul Mackerras

parent 1be3770aa9

commit fbf0274e43

2 changed files with 131 additions and 40 deletions

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136

arch/powerpc/sysdev/mpic.c

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35

include/asm-powerpc/mpic.h

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