powerpc: Rework dma-noncoherent to use generic vmalloc layer

This patch rewrites consistent dma allocations support to use vmalloc
layer to allocate virtual memory space from vmalloc pool and get rid
of CONFIG_CONSISTENT_{START,SIZE}.

This greatly simplifies the code by effectively removing a custom
allocator we had for virtual space.

Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 0 insertions, 25 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index e46995a21685..d11896b445b6 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -833,31 +833,6 @@ config TASK_SIZE
         default "0x80000000" if PPC_PREP || PPC_8xx
         default "0xc0000000"
 
-config CONSISTENT_START_BOOL
-        bool "Set custom consistent memory pool address"
-        depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
-        help
-          This option allows you to set the base virtual address
-          of the consistent memory pool.  This pool of virtual
-          memory is used to make consistent memory allocations.
-
-config CONSISTENT_START
-        hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
-        default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx)
-        default "0xff100000" if NOT_COHERENT_CACHE
-
-config CONSISTENT_SIZE_BOOL
-        bool "Set custom consistent memory pool size"
-        depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
-        help
-          This option allows you to set the size of the
-          consistent memory pool.  This pool of virtual memory
-          is used to make consistent memory allocations.
-
-config CONSISTENT_SIZE
-        hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
-        default "0x00200000" if NOT_COHERENT_CACHE
-
 config PIN_TLB
         bool "Pinned Kernel TLBs (860 ONLY)"
         depends on ADVANCED_OPTIONS && 8xx