linux-kernel - [PATCH kernel v4 04/11] powerpc/powernv: Define TCE Kill flags

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Message-Id: <1461920124-21719-5-git-send-email-aik@ozlabs.ru>
Date:	Fri, 29 Apr 2016 18:55:17 +1000
From:	Alexey Kardashevskiy <aik@...abs.ru>
To:	linuxppc-dev@...ts.ozlabs.org
Cc:	Alexey Kardashevskiy <aik@...abs.ru>,
	Alex Williamson <alex.williamson@...hat.com>,
	Alistair Popple <alistair@...ple.id.au>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	Daniel Axtens <dja@...ens.net>,
	David Gibson <david@...son.dropbear.id.au>,
	Gavin Shan <gwshan@...ux.vnet.ibm.com>,
	Russell Currey <ruscur@...sell.cc>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH kernel v4 04/11] powerpc/powernv: Define TCE Kill flags

This replaces magic constants for TCE Kill IODA2 register with macros.

Signed-off-by: Alexey Kardashevskiy <aik@...abs.ru>
Reviewed-by: David Gibson <david@...son.dropbear.id.au>
---
 arch/powerpc/platforms/powernv/pci-ioda.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index ca307b6..03be25d 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -1811,10 +1811,13 @@ static struct iommu_table_ops pnv_ioda1_iommu_ops = {
 	.get = pnv_tce_get,
 };
 
+#define TCE_KILL_INVAL_PE   PPC_BIT(1)
+#define TCE_KILL_INVAL_TCE  PPC_BIT(2)
+
 static inline void pnv_pci_ioda2_tce_invalidate_pe(struct pnv_ioda_pe *pe)
 {
 	/* 01xb - invalidate TCEs that match the specified PE# */
-	unsigned long val = (0x4ull << 60) | (pe->pe_number & 0xFF);
+	unsigned long val = TCE_KILL_INVAL_PE | (pe->pe_number & 0xFF);
 	struct pnv_phb *phb = pe->phb;
 	struct pnv_ioda_pe *npe;
 	int i;
@@ -1842,7 +1845,7 @@ static void pnv_pci_ioda2_do_tce_invalidate(unsigned pe_number, bool rm,
 	unsigned long start, end, inc;
 
 	/* We'll invalidate DMA address in PE scope */
-	start = 0x2ull << 60;
+	start = TCE_KILL_INVAL_TCE;
 	start |= (pe_number & 0xFF);
 	end = start;
 
-- 
2.5.0.rc3