linux-kernel - [PATCH 2/6] powerpc/powernv: use it_page

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Date:	Fri,  6 Jun 2014 18:44:02 +1000
From:	Alexey Kardashevskiy <aik@...abs.ru>
To:	linuxppc-dev@...ts.ozlabs.org
Cc:	Alexey Kardashevskiy <aik@...abs.ru>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Alistair Popple <alistair@...ple.id.au>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/6] powerpc/powernv: use it_page_shift in TCE build

This makes use of iommu_table::it_page_shift instead of TCE_SHIFT and
TCE_RPN_SHIFT hardcoded values.

Signed-off-by: Alexey Kardashevskiy <aik@...abs.ru>
---
 arch/powerpc/platforms/powernv/pci.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index 8518817..9f7c556 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -527,10 +527,11 @@ static int pnv_tce_build(struct iommu_table *tbl, long index, long npages,
 		proto_tce |= TCE_PCI_WRITE;
 
 	tces = tcep = ((__be64 *)tbl->it_base) + index - tbl->it_offset;
-	rpn = __pa(uaddr) >> TCE_SHIFT;
+	rpn = __pa(uaddr) >> tbl->it_page_shift;
 
 	while (npages--)
-		*(tcep++) = cpu_to_be64(proto_tce | (rpn++ << TCE_RPN_SHIFT));
+		*(tcep++) = cpu_to_be64(proto_tce |
+				(rpn++ << tbl->it_page_shift));
 
 	/* Some implementations won't cache invalid TCEs and thus may not
 	 * need that flush. We'll probably turn it_type into a bit mask
-- 
2.0.0

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