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| author |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2007-12-21 15:39:22 +1100 |
|---|---|---|
| committer |   Josh Boyer <jwboyer@linux.vnet.ibm.com> | 2007-12-23 13:12:11 -0600 |
| commit | 0e6140a56f2878816ecf9db50f40133d25d987e4 (patch) | |
| tree | 672b1af7086bcb712839756fb31f6d662525ab54 /arch/powerpc/sysdev/ppc4xx_pci.c | |
| parent | [POWERPC] Reworking machine check handling and Fix 440/440A (diff) | |
| download | linux-dev-0e6140a56f2878816ecf9db50f40133d25d987e4.tar.xz linux-dev-0e6140a56f2878816ecf9db50f40133d25d987e4.zip | |
[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>
Diffstat (limited to 'arch/powerpc/sysdev/ppc4xx_pci.c')
0 files changed, 0 insertions, 0 deletions