powerpc/pci: Split IO vs MMIO indirect access hooks
The goal is to avoid adding overhead to MMIO when only PIO is needed
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index 658ffc5..54db9fb 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -154,11 +154,17 @@
config PPC_INDIRECT_IO
bool
select GENERIC_IOMAP
- default n
+
+config PPC_INDIRECT_PIO
+ bool
+ select PPC_INDIRECT_IO
+
+config PPC_INDIRECT_MMIO
+ bool
+ select PPC_INDIRECT_IO
config GENERIC_IOMAP
bool
- default n
source "drivers/cpufreq/Kconfig"
diff --git a/arch/powerpc/platforms/cell/Kconfig b/arch/powerpc/platforms/cell/Kconfig
index 81239eb..3c7f1de 100644
--- a/arch/powerpc/platforms/cell/Kconfig
+++ b/arch/powerpc/platforms/cell/Kconfig
@@ -6,7 +6,8 @@
bool
select PPC_CELL
select PPC_DCR_MMIO
- select PPC_INDIRECT_IO
+ select PPC_INDIRECT_PIO
+ select PPC_INDIRECT_MMIO
select PPC_NATIVE
select PPC_RTAS
select IRQ_EDGE_EOI_HANDLER
diff --git a/arch/powerpc/platforms/iseries/Kconfig b/arch/powerpc/platforms/iseries/Kconfig
index e5bc9f7..ea1d362 100644
--- a/arch/powerpc/platforms/iseries/Kconfig
+++ b/arch/powerpc/platforms/iseries/Kconfig
@@ -1,7 +1,8 @@
config PPC_ISERIES
bool "IBM Legacy iSeries"
depends on PPC64 && PPC_BOOK3S
- select PPC_INDIRECT_IO
+ select PPC_INDIRECT_PIO
+ select PPC_INDIRECT_MMIO
select PPC_PCI_CHOICE if EXPERT
menu "iSeries device drivers"