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authorAlexandre Bounine <alexandre.bounine@idt.com>2016-08-02 14:06:54 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-08-02 19:35:37 -0400
commita057a52e94e15d89be8af557584e0144a496b6c6 (patch)
tree94f430671c0aacbb4613eddcf2b349082d8b0e30 /arch
parent60e377b5c1226d6737786947d0e915ab45d7f188 (diff)
downloadlinux-a057a52e94e15d89be8af557584e0144a496b6c6.tar.bz2
rapidio: change inbound window size type to u64
Current definition of map_inb() mport operations callback uses u32 type to specify required inbound window (IBW) size. This is limiting factor because existing hardware - tsi721 and fsl_rio, both support IBW size up to 16GB. Changing type of size parameter to u64 to allow IBW size configurations larger than 4GB. [alexandre.bounine@idt.com: remove compiler warning about size of constant] Link: http://lkml.kernel.org/r/20160802184856.2566-1-alexandre.bounine@idt.com Link: http://lkml.kernel.org/r/1469125134-16523-11-git-send-email-alexandre.bounine@idt.com Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com> Cc: Barry Wood <barry.wood@idt.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/sysdev/fsl_rio.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/sysdev/fsl_rio.c b/arch/powerpc/sysdev/fsl_rio.c
index f5bf38b94595..386790cfa16e 100644
--- a/arch/powerpc/sysdev/fsl_rio.c
+++ b/arch/powerpc/sysdev/fsl_rio.c
@@ -289,7 +289,7 @@ static void fsl_rio_inbound_mem_init(struct rio_priv *priv)
}
int fsl_map_inb_mem(struct rio_mport *mport, dma_addr_t lstart,
- u64 rstart, u32 size, u32 flags)
+ u64 rstart, u64 size, u32 flags)
{
struct rio_priv *priv = mport->priv;
u32 base_size;
@@ -298,7 +298,7 @@ int fsl_map_inb_mem(struct rio_mport *mport, dma_addr_t lstart,
u32 riwar;
int i;
- if ((size & (size - 1)) != 0)
+ if ((size & (size - 1)) != 0 || size > 0x400000000ULL)
return -EINVAL;
base_size_log = ilog2(size);