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| author |   Michael Ellerman <michael@ozlabs.org> | 2011-04-11 21:25:01 +0000 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-04-27 14:18:27 +1000 |
| commit | 21176fed25c3b0cb17c6c42d71b4e3d68b8f9dd4 (patch) | |
| tree | bd3b54affe6feda4966b688a218bb2bd0bc82611 /arch/powerpc/platforms | |
| parent | cxgb4: use pgprot_writecombine() on powerpc (diff) | |
| download | linux-dev-21176fed25c3b0cb17c6c42d71b4e3d68b8f9dd4.tar.xz linux-dev-21176fed25c3b0cb17c6c42d71b4e3d68b8f9dd4.zip | |
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>
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/Kconfig | 10 | ||||
| -rw-r--r-- | arch/powerpc/platforms/cell/Kconfig | 3 | ||||
| -rw-r--r-- | arch/powerpc/platforms/iseries/Kconfig | 3 |
3 files changed, 12 insertions, 4 deletions
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig index 658ffc50493d..54db9fbab1dc 100644 --- a/arch/powerpc/platforms/Kconfig +++ b/arch/powerpc/platforms/Kconfig @@ -154,11 +154,17 @@ config PPC_P7_NAP 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 81239ebed83f..3c7f1de06cdf 100644 --- a/arch/powerpc/platforms/cell/Kconfig +++ b/arch/powerpc/platforms/cell/Kconfig @@ -6,7 +6,8 @@ config PPC_CELL_COMMON 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 e5bc9f75d474..ea1d3622b41c 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" |