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authorMichael Ellerman <michael@ellerman.id.au>2007-10-15 19:34:36 +1000
committerJeff Garzik <jeff@garzik.org>2007-10-15 14:29:49 -0400
commit83f34df4e7c8794a5a81ede663fe184f4201308a (patch)
treec109c113ee02c5d656cd1b211ba2bc67d5dfd270 /arch/powerpc/sysdev/mpic.c
parent0f18e719dc0d36ad91fe94b0b3dd08fdcdd2faa2 (diff)
Add dcr_host_t.base in dcr_read()/dcr_write()
Now that all users of dcr_read()/dcr_write() add the dcr_host_t.base, we can save them the trouble and do it in dcr_read()/dcr_write(). As some background to why we just went through all this jiggery-pokery, benh sayeth: Initially the goal of the dcr_read/dcr_write routines was to operate like mfdcr/mtdcr which take absolute DCR numbers. The reason is that on 4xx hardware, indirect DCR access is a pain (goes through a table of instructions) and it's useful to have the compiler resolve an absolute DCR inline. We decided that wasn't worth the API bastardisation since most places where absolute DCR values are used are low level 4xx-only code which may as well continue using mfdcr/mtdcr, while the new API is designed for device "instances" that can exist on 4xx and Axon type platforms and may be located at variable DCR offsets. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'arch/powerpc/sysdev/mpic.c')
-rw-r--r--arch/powerpc/sysdev/mpic.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 893e65439e85..e47938899a92 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -156,7 +156,7 @@ static inline u32 _mpic_read(enum mpic_reg_type type,
switch(type) {
#ifdef CONFIG_PPC_DCR
case mpic_access_dcr:
- return dcr_read(rb->dhost, rb->dhost.base + reg);
+ return dcr_read(rb->dhost, reg);
#endif
case mpic_access_mmio_be:
return in_be32(rb->base + (reg >> 2));
@@ -173,7 +173,7 @@ static inline void _mpic_write(enum mpic_reg_type type,
switch(type) {
#ifdef CONFIG_PPC_DCR
case mpic_access_dcr:
- return dcr_write(rb->dhost, rb->dhost.base + reg, value);
+ return dcr_write(rb->dhost, reg, value);
#endif
case mpic_access_mmio_be:
return out_be32(rb->base + (reg >> 2), value);