]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
[POWERPC] 4xx: Improve support for 4xx indirect DCRs
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>
Fri, 21 Dec 2007 04:39:22 +0000 (15:39 +1100)
committerJosh Boyer <jwboyer@linux.vnet.ibm.com>
Sun, 23 Dec 2007 19:12:11 +0000 (13:12 -0600)
commit0e6140a56f2878816ecf9db50f40133d25d987e4
tree672b1af7086bcb712839756fb31f6d662525ab54
parent47c0bd1ae24c34e851cf0f2b02ef2a6847d7ae15
[POWERPC] 4xx: Improve support for 4xx indirect DCRs

Accessing indirect DCRs is done via a pair of address/data DCRs.

Such accesses are thus inherently racy, vs. interrupts, preemption
and possibly SMP if 4xx SMP cores are ever used.

This updates the mfdcri/mtdcri macros in dcr-native.h (which were
so far unused) to use a spinlock.

In addition, add some common definitions to a new dcr-regs.h file.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
include/asm-powerpc/dcr-native.h
include/asm-powerpc/dcr-regs.h [new file with mode: 0644]