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Message-ID: <20151023210008.GG10197@linux.vnet.ibm.com>
Date: Fri, 23 Oct 2015 14:00:08 -0700
From: Nishanth Aravamudan <nacc@...ux.vnet.ibm.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: Matthew Wilcox <willy@...ux.intel.com>,
Keith Busch <keith.busch@...el.com>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
Michael Ellerman <mpe@...erman.id.au>,
Alexey Kardashevskiy <aik@...abs.ru>,
David Gibson <david@...son.dropbear.id.au>,
Christoph Hellwig <hch@...radead.org>,
linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org,
linuxppc-dev@...ts.ozlabs.org, sparclinux@...r.kernel.org
Subject: [PATCH 5/7] [RFC PATCH 5/7] sparc: rename kernel/iommu_common.h ->
include/asm/iommu_common.h
In order to cleanly expose the desired IOMMU page shift via the new
dma_get_page_shift API, we need to have the sparc constants available in
a more typical location. There should be no functional impact to this
move, but it is untested.
Signed-off-by: Nishanth Aravamudan <nacc@...ux.vnet.ibm.com>
---
arch/sparc/include/asm/iommu_common.h | 51 +++++++++++++++++++++++++++++++++++
arch/sparc/kernel/iommu.c | 2 +-
arch/sparc/kernel/iommu_common.h | 51 -----------------------------------
arch/sparc/kernel/pci_psycho.c | 2 +-
arch/sparc/kernel/pci_sabre.c | 2 +-
arch/sparc/kernel/pci_schizo.c | 2 +-
arch/sparc/kernel/pci_sun4v.c | 2 +-
arch/sparc/kernel/psycho_common.c | 2 +-
arch/sparc/kernel/sbus.c | 3 +--
9 files changed, 58 insertions(+), 59 deletions(-)
create mode 100644 arch/sparc/include/asm/iommu_common.h
delete mode 100644 arch/sparc/kernel/iommu_common.h
diff --git a/arch/sparc/include/asm/iommu_common.h b/arch/sparc/include/asm/iommu_common.h
new file mode 100644
index 0000000..b40cec2
--- /dev/null
+++ b/arch/sparc/include/asm/iommu_common.h
@@ -0,0 +1,51 @@
+/* iommu_common.h: UltraSparc SBUS/PCI common iommu declarations.
+ *
+ * Copyright (C) 1999, 2008 David S. Miller (davem@...emloft.net)
+ */
+
+#ifndef _IOMMU_COMMON_H
+#define _IOMMU_COMMON_H
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/scatterlist.h>
+#include <linux/device.h>
+#include <linux/iommu-helper.h>
+#include <linux/scatterlist.h>
+
+#include <asm/iommu.h>
+
+/*
+ * These give mapping size of each iommu pte/tlb.
+ */
+#define IO_PAGE_SHIFT 13
+#define IO_PAGE_SIZE (1UL << IO_PAGE_SHIFT)
+#define IO_PAGE_MASK (~(IO_PAGE_SIZE-1))
+#define IO_PAGE_ALIGN(addr) ALIGN(addr, IO_PAGE_SIZE)
+
+#define IO_TSB_ENTRIES (128*1024)
+#define IO_TSB_SIZE (IO_TSB_ENTRIES * 8)
+
+/*
+ * This is the hardwired shift in the iotlb tag/data parts.
+ */
+#define IOMMU_PAGE_SHIFT 13
+
+#define SG_ENT_PHYS_ADDRESS(SG) (__pa(sg_virt((SG))))
+
+static inline int is_span_boundary(unsigned long entry,
+ unsigned long shift,
+ unsigned long boundary_size,
+ struct scatterlist *outs,
+ struct scatterlist *sg)
+{
+ unsigned long paddr = SG_ENT_PHYS_ADDRESS(outs);
+ int nr = iommu_num_pages(paddr, outs->dma_length + sg->length,
+ IO_PAGE_SIZE);
+
+ return iommu_is_span_boundary(entry, nr, shift, boundary_size);
+}
+
+#endif /* _IOMMU_COMMON_H */
diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c
index 5320689..f9b6077 100644
--- a/arch/sparc/kernel/iommu.c
+++ b/arch/sparc/kernel/iommu.c
@@ -20,8 +20,8 @@
#endif
#include <asm/iommu.h>
+#include <asm/iommu_common.h>
-#include "iommu_common.h"
#include "kernel.h"
#define STC_CTXMATCH_ADDR(STC, CTX) \
diff --git a/arch/sparc/kernel/iommu_common.h b/arch/sparc/kernel/iommu_common.h
deleted file mode 100644
index b40cec2..0000000
--- a/arch/sparc/kernel/iommu_common.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/* iommu_common.h: UltraSparc SBUS/PCI common iommu declarations.
- *
- * Copyright (C) 1999, 2008 David S. Miller (davem@...emloft.net)
- */
-
-#ifndef _IOMMU_COMMON_H
-#define _IOMMU_COMMON_H
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/scatterlist.h>
-#include <linux/device.h>
-#include <linux/iommu-helper.h>
-#include <linux/scatterlist.h>
-
-#include <asm/iommu.h>
-
-/*
- * These give mapping size of each iommu pte/tlb.
- */
-#define IO_PAGE_SHIFT 13
-#define IO_PAGE_SIZE (1UL << IO_PAGE_SHIFT)
-#define IO_PAGE_MASK (~(IO_PAGE_SIZE-1))
-#define IO_PAGE_ALIGN(addr) ALIGN(addr, IO_PAGE_SIZE)
-
-#define IO_TSB_ENTRIES (128*1024)
-#define IO_TSB_SIZE (IO_TSB_ENTRIES * 8)
-
-/*
- * This is the hardwired shift in the iotlb tag/data parts.
- */
-#define IOMMU_PAGE_SHIFT 13
-
-#define SG_ENT_PHYS_ADDRESS(SG) (__pa(sg_virt((SG))))
-
-static inline int is_span_boundary(unsigned long entry,
- unsigned long shift,
- unsigned long boundary_size,
- struct scatterlist *outs,
- struct scatterlist *sg)
-{
- unsigned long paddr = SG_ENT_PHYS_ADDRESS(outs);
- int nr = iommu_num_pages(paddr, outs->dma_length + sg->length,
- IO_PAGE_SIZE);
-
- return iommu_is_span_boundary(entry, nr, shift, boundary_size);
-}
-
-#endif /* _IOMMU_COMMON_H */
diff --git a/arch/sparc/kernel/pci_psycho.c b/arch/sparc/kernel/pci_psycho.c
index 7dce27b..332fd6f 100644
--- a/arch/sparc/kernel/pci_psycho.c
+++ b/arch/sparc/kernel/pci_psycho.c
@@ -15,13 +15,13 @@
#include <linux/of_device.h>
#include <asm/iommu.h>
+#include <asm/iommu_common.h>
#include <asm/irq.h>
#include <asm/starfire.h>
#include <asm/prom.h>
#include <asm/upa.h>
#include "pci_impl.h"
-#include "iommu_common.h"
#include "psycho_common.h"
#define DRIVER_NAME "psycho"
diff --git a/arch/sparc/kernel/pci_sabre.c b/arch/sparc/kernel/pci_sabre.c
index 00a616f..6c2c616 100644
--- a/arch/sparc/kernel/pci_sabre.c
+++ b/arch/sparc/kernel/pci_sabre.c
@@ -16,12 +16,12 @@
#include <asm/apb.h>
#include <asm/iommu.h>
+#include <asm/iommu_common.h>
#include <asm/irq.h>
#include <asm/prom.h>
#include <asm/upa.h>
#include "pci_impl.h"
-#include "iommu_common.h"
#include "psycho_common.h"
#define DRIVER_NAME "sabre"
diff --git a/arch/sparc/kernel/pci_schizo.c b/arch/sparc/kernel/pci_schizo.c
index c664d3e..ef23ab2 100644
--- a/arch/sparc/kernel/pci_schizo.c
+++ b/arch/sparc/kernel/pci_schizo.c
@@ -13,13 +13,13 @@
#include <linux/of_device.h>
#include <asm/iommu.h>
+#include <asm/iommu_common.h>
#include <asm/irq.h>
#include <asm/pstate.h>
#include <asm/prom.h>
#include <asm/upa.h>
#include "pci_impl.h"
-#include "iommu_common.h"
#define DRIVER_NAME "schizo"
#define PFX DRIVER_NAME ": "
diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c
index d2fe57d..1d72295 100644
--- a/arch/sparc/kernel/pci_sun4v.c
+++ b/arch/sparc/kernel/pci_sun4v.c
@@ -18,12 +18,12 @@
#include <linux/iommu-common.h>
#include <asm/iommu.h>
+#include <asm/iommu_common.h>
#include <asm/irq.h>
#include <asm/hypervisor.h>
#include <asm/prom.h>
#include "pci_impl.h"
-#include "iommu_common.h"
#include "pci_sun4v.h"
diff --git a/arch/sparc/kernel/psycho_common.c b/arch/sparc/kernel/psycho_common.c
index 8db48e8..8eec09d 100644
--- a/arch/sparc/kernel/psycho_common.c
+++ b/arch/sparc/kernel/psycho_common.c
@@ -5,10 +5,10 @@
#include <linux/kernel.h>
#include <linux/interrupt.h>
+#include <asm/iommu_common.h>
#include <asm/upa.h>
#include "pci_impl.h"
-#include "iommu_common.h"
#include "psycho_common.h"
#define PSYCHO_STRBUF_CTRL_DENAB 0x0000000000000002ULL
diff --git a/arch/sparc/kernel/sbus.c b/arch/sparc/kernel/sbus.c
index be5bdf9..a92cdf6 100644
--- a/arch/sparc/kernel/sbus.c
+++ b/arch/sparc/kernel/sbus.c
@@ -24,8 +24,7 @@
#include <asm/prom.h>
#include <asm/oplib.h>
#include <asm/starfire.h>
-
-#include "iommu_common.h"
+#include <asm/iommu_common.h>
#define MAP_BASE ((u32)0xc0000000)
--
1.9.1
--
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