Merge tag 'omap-for-v3.8/cleanup-headers-iommu-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup

From Tony Lindgren:

Move most of remaining omap iommu code to drivers/iommu.
This is needed for the multiplatform kernels as the plat
and mach headers cannot be included.

These changes were agreed to be merged via the arm-soc
tree by Joerg and Ohad as these will cause some merge
conflicts with the other related clean-up branches.

So omap-for-v3.8/cleanup-headers-iommu should be added
as one of the depends branches for arm-soc.

* tag 'omap-for-v3.8/cleanup-headers-iommu-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Move iommu/iovmm headers to platform_data
  ARM: OMAP2+: Make some definitions local
  ARM: OMAP2+: Move iommu2 to drivers/iommu/omap-iommu2.c
  ARM: OMAP2+: Move plat/iovmm.h to include/linux/omap-iommu.h
  ARM: OMAP2+: Move iopgtable header to drivers/iommu/
  ARM: OMAP: Merge iommu2.h into iommu.h

Conflicts due to surrounding changes fixed up in:
	arch/arm/mach-omap2/omap_hwmod_44xx_data.c
	drivers/media/platform/omap3isp/ispvideo.c

Signed-off-by: Olof Johansson <olof@lixom.net>

21 files changed, 280 insertions, 289 deletions

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index dd76ff7..11c57af 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -202,8 +202,6 @@ obj-$(CONFIG_HW_PERF_EVENTS)		+= pmu.o
 obj-$(CONFIG_OMAP_MBOX_FWK)		+= mailbox_mach.o
 mailbox_mach-objs			:= mailbox.o
 
-obj-$(CONFIG_OMAP_IOMMU)		+= iommu2.o
-
 iommu-$(CONFIG_OMAP_IOMMU)		:= omap-iommu.o
 obj-y					+= $(iommu-m) $(iommu-y)
 
diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
index d2215e9..3cff7dc 100644
--- a/arch/arm/mach-omap2/devices.c
+++ b/arch/arm/mach-omap2/devices.c
@@ -129,7 +129,7 @@ static struct platform_device omap2cam_device = {
 
 #if defined(CONFIG_IOMMU_API)
 
-#include <plat/iommu.h>
+#include <linux/platform_data/iommu-omap.h>
 
 static struct resource omap3isp_resources[] = {
 	{
diff --git a/arch/arm/mach-omap2/omap-iommu.c b/arch/arm/mach-omap2/omap-iommu.c
index df298d4..a6a4ff8 100644
--- a/arch/arm/mach-omap2/omap-iommu.c
+++ b/arch/arm/mach-omap2/omap-iommu.c
@@ -13,7 +13,7 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 
-#include <plat/iommu.h>
+#include <linux/platform_data/iommu-omap.h>
 
 #include "soc.h"
 #include "common.h"
diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index addc1c2..7f73f21 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -24,8 +24,8 @@
 #include "l4_3xxx.h"
 #include <linux/platform_data/asoc-ti-mcbsp.h>
 #include <linux/platform_data/spi-omap2-mcspi.h>
+#include <linux/platform_data/iommu-omap.h>
 #include <plat/dmtimer.h>
-#include <plat/iommu.h>
 
 #include "am35xx.h"
 
diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
index f5b55a7..26f8e9f 100644
--- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
@@ -28,8 +28,8 @@
 #include <linux/platform_data/omap_ocp2scp.h>
 #include <linux/platform_data/spi-omap2-mcspi.h>
 #include <linux/platform_data/asoc-ti-mcbsp.h>
+#include <linux/platform_data/iommu-omap.h>
 #include <plat/dmtimer.h>
-#include <plat/iommu.h>
 
 #include "omap_hwmod.h"
 #include "omap_hwmod_common_data.h"
diff --git a/arch/arm/plat-omap/include/plat/iommu2.h b/arch/arm/plat-omap/include/plat/iommu2.h
deleted file mode 100644
index d4116b59..0000000
--- a/arch/arm/plat-omap/include/plat/iommu2.h
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * omap iommu: omap2 architecture specific definitions
- *
- * Copyright (C) 2008-2009 Nokia Corporation
- *
- * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef __MACH_IOMMU2_H
-#define __MACH_IOMMU2_H
-
-#include <linux/io.h>
-
-/*
- * MMU Register offsets
- */
-#define MMU_REVISION		0x00
-#define MMU_SYSCONFIG		0x10
-#define MMU_SYSSTATUS		0x14
-#define MMU_IRQSTATUS		0x18
-#define MMU_IRQENABLE		0x1c
-#define MMU_WALKING_ST		0x40
-#define MMU_CNTL		0x44
-#define MMU_FAULT_AD		0x48
-#define MMU_TTB			0x4c
-#define MMU_LOCK		0x50
-#define MMU_LD_TLB		0x54
-#define MMU_CAM			0x58
-#define MMU_RAM			0x5c
-#define MMU_GFLUSH		0x60
-#define MMU_FLUSH_ENTRY		0x64
-#define MMU_READ_CAM		0x68
-#define MMU_READ_RAM		0x6c
-#define MMU_EMU_FAULT_AD	0x70
-
-#define MMU_REG_SIZE		256
-
-/*
- * MMU Register bit definitions
- */
-#define MMU_LOCK_BASE_SHIFT	10
-#define MMU_LOCK_BASE_MASK	(0x1f << MMU_LOCK_BASE_SHIFT)
-#define MMU_LOCK_BASE(x)	\
-	((x & MMU_LOCK_BASE_MASK) >> MMU_LOCK_BASE_SHIFT)
-
-#define MMU_LOCK_VICT_SHIFT	4
-#define MMU_LOCK_VICT_MASK	(0x1f << MMU_LOCK_VICT_SHIFT)
-#define MMU_LOCK_VICT(x)	\
-	((x & MMU_LOCK_VICT_MASK) >> MMU_LOCK_VICT_SHIFT)
-
-#define MMU_CAM_VATAG_SHIFT	12
-#define MMU_CAM_VATAG_MASK \
-	((~0UL >> MMU_CAM_VATAG_SHIFT) << MMU_CAM_VATAG_SHIFT)
-#define MMU_CAM_P		(1 << 3)
-#define MMU_CAM_V		(1 << 2)
-#define MMU_CAM_PGSZ_MASK	3
-#define MMU_CAM_PGSZ_1M		(0 << 0)
-#define MMU_CAM_PGSZ_64K	(1 << 0)
-#define MMU_CAM_PGSZ_4K		(2 << 0)
-#define MMU_CAM_PGSZ_16M	(3 << 0)
-
-#define MMU_RAM_PADDR_SHIFT	12
-#define MMU_RAM_PADDR_MASK \
-	((~0UL >> MMU_RAM_PADDR_SHIFT) << MMU_RAM_PADDR_SHIFT)
-#define MMU_RAM_ENDIAN_SHIFT	9
-#define MMU_RAM_ENDIAN_MASK	(1 << MMU_RAM_ENDIAN_SHIFT)
-#define MMU_RAM_ENDIAN_BIG	(1 << MMU_RAM_ENDIAN_SHIFT)
-#define MMU_RAM_ENDIAN_LITTLE	(0 << MMU_RAM_ENDIAN_SHIFT)
-#define MMU_RAM_ELSZ_SHIFT	7
-#define MMU_RAM_ELSZ_MASK	(3 << MMU_RAM_ELSZ_SHIFT)
-#define MMU_RAM_ELSZ_8		(0 << MMU_RAM_ELSZ_SHIFT)
-#define MMU_RAM_ELSZ_16		(1 << MMU_RAM_ELSZ_SHIFT)
-#define MMU_RAM_ELSZ_32		(2 << MMU_RAM_ELSZ_SHIFT)
-#define MMU_RAM_ELSZ_NONE	(3 << MMU_RAM_ELSZ_SHIFT)
-#define MMU_RAM_MIXED_SHIFT	6
-#define MMU_RAM_MIXED_MASK	(1 << MMU_RAM_MIXED_SHIFT)
-#define MMU_RAM_MIXED		MMU_RAM_MIXED_MASK
-
-/*
- * register accessors
- */
-static inline u32 iommu_read_reg(struct omap_iommu *obj, size_t offs)
-{
-	return __raw_readl(obj->regbase + offs);
-}
-
-static inline void iommu_write_reg(struct omap_iommu *obj, u32 val, size_t offs)
-{
-	__raw_writel(val, obj->regbase + offs);
-}
-
-#endif /* __MACH_IOMMU2_H */
diff --git a/arch/arm/plat-omap/include/plat/iovmm.h b/arch/arm/plat-omap/include/plat/iovmm.h
deleted file mode 100644
index 498e57c..0000000
--- a/arch/arm/plat-omap/include/plat/iovmm.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * omap iommu: simple virtual address space management
- *
- * Copyright (C) 2008-2009 Nokia Corporation
- *
- * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef __IOMMU_MMAP_H
-#define __IOMMU_MMAP_H
-
-#include <linux/iommu.h>
-
-struct iovm_struct {
-	struct omap_iommu	*iommu;	/* iommu object which this belongs to */
-	u32			da_start; /* area definition */
-	u32			da_end;
-	u32			flags; /* IOVMF_: see below */
-	struct list_head	list; /* linked in ascending order */
-	const struct sg_table	*sgt; /* keep 'page' <-> 'da' mapping */
-	void			*va; /* mpu side mapped address */
-};
-
-/*
- * IOVMF_FLAGS: attribute for iommu virtual memory area(iovma)
- *
- * lower 16 bit is used for h/w and upper 16 bit is for s/w.
- */
-#define IOVMF_SW_SHIFT		16
-
-/*
- * iovma: h/w flags derived from cam and ram attribute
- */
-#define IOVMF_CAM_MASK		(~((1 << 10) - 1))
-#define IOVMF_RAM_MASK		(~IOVMF_CAM_MASK)
-
-#define IOVMF_PGSZ_MASK		(3 << 0)
-#define IOVMF_PGSZ_1M		MMU_CAM_PGSZ_1M
-#define IOVMF_PGSZ_64K		MMU_CAM_PGSZ_64K
-#define IOVMF_PGSZ_4K		MMU_CAM_PGSZ_4K
-#define IOVMF_PGSZ_16M		MMU_CAM_PGSZ_16M
-
-#define IOVMF_ENDIAN_MASK	(1 << 9)
-#define IOVMF_ENDIAN_BIG	MMU_RAM_ENDIAN_BIG
-#define IOVMF_ENDIAN_LITTLE	MMU_RAM_ENDIAN_LITTLE
-
-#define IOVMF_ELSZ_MASK		(3 << 7)
-#define IOVMF_ELSZ_8		MMU_RAM_ELSZ_8
-#define IOVMF_ELSZ_16		MMU_RAM_ELSZ_16
-#define IOVMF_ELSZ_32		MMU_RAM_ELSZ_32
-#define IOVMF_ELSZ_NONE		MMU_RAM_ELSZ_NONE
-
-#define IOVMF_MIXED_MASK	(1 << 6)
-#define IOVMF_MIXED		MMU_RAM_MIXED
-
-/*
- * iovma: s/w flags, used for mapping and umapping internally.
- */
-#define IOVMF_MMIO		(1 << IOVMF_SW_SHIFT)
-#define IOVMF_ALLOC		(2 << IOVMF_SW_SHIFT)
-#define IOVMF_ALLOC_MASK	(3 << IOVMF_SW_SHIFT)
-
-/* "superpages" is supported just with physically linear pages */
-#define IOVMF_DISCONT		(1 << (2 + IOVMF_SW_SHIFT))
-#define IOVMF_LINEAR		(2 << (2 + IOVMF_SW_SHIFT))
-#define IOVMF_LINEAR_MASK	(3 << (2 + IOVMF_SW_SHIFT))
-
-#define IOVMF_DA_FIXED		(1 << (4 + IOVMF_SW_SHIFT))
-
-
-extern struct iovm_struct *omap_find_iovm_area(struct device *dev, u32 da);
-extern u32
-omap_iommu_vmap(struct iommu_domain *domain, struct device *dev, u32 da,
-			const struct sg_table *sgt, u32 flags);
-extern struct sg_table *omap_iommu_vunmap(struct iommu_domain *domain,
-				struct device *dev, u32 da);
-extern u32
-omap_iommu_vmalloc(struct iommu_domain *domain, struct device *dev,
-				u32 da, size_t bytes, u32 flags);
-extern void
-omap_iommu_vfree(struct iommu_domain *domain, struct device *dev,
-				const u32 da);
-extern void *omap_da_to_va(struct device *dev, u32 da);
-
-#endif /* __IOMMU_MMAP_H */
diff --git a/drivers/iommu/Makefile b/drivers/iommu/Makefile
index 14a4d5f..f66b816 100644
--- a/drivers/iommu/Makefile
+++ b/drivers/iommu/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_DMAR_TABLE) += dmar.o
 obj-$(CONFIG_INTEL_IOMMU) += iova.o intel-iommu.o
 obj-$(CONFIG_IRQ_REMAP) += intel_irq_remapping.o irq_remapping.o
 obj-$(CONFIG_OMAP_IOMMU) += omap-iommu.o
+obj-$(CONFIG_OMAP_IOMMU) += omap-iommu2.o
 obj-$(CONFIG_OMAP_IOVMM) += omap-iovmm.o
 obj-$(CONFIG_OMAP_IOMMU_DEBUG) += omap-iommu-debug.o
 obj-$(CONFIG_TEGRA_IOMMU_GART) += tegra-gart.o
diff --git a/drivers/iommu/omap-iommu-debug.c b/drivers/iommu/omap-iommu-debug.c
index f55fc5d..d97fbe4 100644
--- a/drivers/iommu/omap-iommu-debug.c
+++ b/drivers/iommu/omap-iommu-debug.c
@@ -18,11 +18,11 @@
 #include <linux/uaccess.h>
 #include <linux/platform_device.h>
 #include <linux/debugfs.h>
+#include <linux/omap-iommu.h>
+#include <linux/platform_data/iommu-omap.h>
 
-#include <plat/iommu.h>
-#include <plat/iovmm.h>
-
-#include <plat/iopgtable.h>
+#include "omap-iopgtable.h"
+#include "omap-iommu.h"
 
 #define MAXCOLUMN 100 /* for short messages */
 
diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c
index d0b1234..badc17c 100644
--- a/drivers/iommu/omap-iommu.c
+++ b/drivers/iommu/omap-iommu.c
@@ -19,14 +19,17 @@
 #include <linux/clk.h>
 #include <linux/platform_device.h>
 #include <linux/iommu.h>
+#include <linux/omap-iommu.h>
 #include <linux/mutex.h>
 #include <linux/spinlock.h>
+#include <linux/io.h>
 
 #include <asm/cacheflush.h>
 
-#include <plat/iommu.h>
+#include <linux/platform_data/iommu-omap.h>
 
-#include <plat/iopgtable.h>
+#include "omap-iopgtable.h"
+#include "omap-iommu.h"
 
 #define for_each_iotlb_cr(obj, n, __i, cr)				\
 	for (__i = 0;							\
@@ -51,6 +54,21 @@ struct omap_iommu_domain {
 	spinlock_t lock;
 };
 
+#define MMU_LOCK_BASE_SHIFT	10
+#define MMU_LOCK_BASE_MASK	(0x1f << MMU_LOCK_BASE_SHIFT)
+#define MMU_LOCK_BASE(x)	\
+	((x & MMU_LOCK_BASE_MASK) >> MMU_LOCK_BASE_SHIFT)
+
+#define MMU_LOCK_VICT_SHIFT	4
+#define MMU_LOCK_VICT_MASK	(0x1f << MMU_LOCK_VICT_SHIFT)
+#define MMU_LOCK_VICT(x)	\
+	((x & MMU_LOCK_VICT_MASK) >> MMU_LOCK_VICT_SHIFT)
+
+struct iotlb_lock {
+	short base;
+	short vict;
+};
+
 /* accommodate the difference between omap1 and omap2/3 */
 static const struct iommu_functions *arch_iommu;
 
@@ -1015,6 +1033,23 @@ static void iopte_cachep_ctor(void *iopte)
 	clean_dcache_area(iopte, IOPTE_TABLE_SIZE);
 }
 
+static u32 iotlb_init_entry(struct iotlb_entry *e, u32 da, u32 pa,
+				   u32 flags)
+{
+	memset(e, 0, sizeof(*e));
+
+	e->da		= da;
+	e->pa		= pa;
+	e->valid	= 1;
+	/* FIXME: add OMAP1 support */
+	e->pgsz		= flags & MMU_CAM_PGSZ_MASK;
+	e->endian	= flags & MMU_RAM_ENDIAN_MASK;
+	e->elsz		= flags & MMU_RAM_ELSZ_MASK;
+	e->mixed	= flags & MMU_RAM_MIXED_MASK;
+
+	return iopgsz_to_bytes(e->pgsz);
+}
+
 static int omap_iommu_map(struct iommu_domain *domain, unsigned long da,
 			 phys_addr_t pa, size_t bytes, int prot)
 {
diff --git a/arch/arm/plat-omap/include/plat/iommu.h b/drivers/iommu/omap-iommu.h
index 68b5f03..2b5f3c0 100644
--- a/arch/arm/plat-omap/include/plat/iommu.h
+++ b/drivers/iommu/omap-iommu.h
@@ -10,8 +10,9 @@
  * published by the Free Software Foundation.
  */
 
-#ifndef __MACH_IOMMU_H
-#define __MACH_IOMMU_H
+#if defined(CONFIG_ARCH_OMAP1)
+#error "iommu for this processor not implemented yet"
+#endif
 
 struct iotlb_entry {
 	u32 da;
@@ -71,11 +72,6 @@ struct cr_regs {
 	};
 };
 
-struct iotlb_lock {
-	short base;
-	short vict;
-};
-
 /* architecture specific functions */
 struct iommu_functions {
 	unsigned long	version;
@@ -103,42 +99,6 @@ struct iommu_functions {
 	ssize_t (*dump_ctx)(struct omap_iommu *obj, char *buf, ssize_t len);
 };
 
-/**
- * struct omap_mmu_dev_attr - OMAP mmu device attributes for omap_hwmod
- * @da_start:		device address where the va space starts.
- * @da_end:		device address where the va space ends.
- * @nr_tlb_entries:	number of entries supported by the translation
- *			look-aside buffer (TLB).
- */
-struct omap_mmu_dev_attr {
-	u32 da_start;
-	u32 da_end;
-	int nr_tlb_entries;
-};
-
-struct iommu_platform_data {
-	const char *name;
-	const char *clk_name;
-	const int nr_tlb_entries;
-	u32 da_start;
-	u32 da_end;
-};
-
-/**
- * struct iommu_arch_data - omap iommu private data
- * @name: name of the iommu device
- * @iommu_dev: handle of the iommu device
- *
- * This is an omap iommu private data object, which binds an iommu user
- * to its iommu device. This object should be placed at the iommu user's
- * dev_archdata so generic IOMMU API can be used without having to
- * utilize omap-specific plumbing anymore.
- */
-struct omap_iommu_arch_data {
-	const char *name;
-	struct omap_iommu *iommu_dev;
-};
-
 #ifdef CONFIG_IOMMU_API
 /**
  * dev_to_omap_iommu() - retrieves an omap iommu object from a user device
@@ -152,18 +112,59 @@ static inline struct omap_iommu *dev_to_omap_iommu(struct device *dev)
 }
 #endif
 
-/* IOMMU errors */
-#define OMAP_IOMMU_ERR_TLB_MISS		(1 << 0)
-#define OMAP_IOMMU_ERR_TRANS_FAULT	(1 << 1)
-#define OMAP_IOMMU_ERR_EMU_MISS		(1 << 2)
-#define OMAP_IOMMU_ERR_TBLWALK_FAULT	(1 << 3)
-#define OMAP_IOMMU_ERR_MULTIHIT_FAULT	(1 << 4)
+/*
+ * MMU Register offsets
+ */
+#define MMU_REVISION		0x00
+#define MMU_SYSCONFIG		0x10
+#define MMU_SYSSTATUS		0x14
+#define MMU_IRQSTATUS		0x18
+#define MMU_IRQENABLE		0x1c
+#define MMU_WALKING_ST		0x40
+#define MMU_CNTL		0x44
+#define MMU_FAULT_AD		0x48
+#define MMU_TTB			0x4c
+#define MMU_LOCK		0x50
+#define MMU_LD_TLB		0x54
+#define MMU_CAM			0x58
+#define MMU_RAM			0x5c
+#define MMU_GFLUSH		0x60
+#define MMU_FLUSH_ENTRY		0x64
+#define MMU_READ_CAM		0x68
+#define MMU_READ_RAM		0x6c
+#define MMU_EMU_FAULT_AD	0x70
+
+#define MMU_REG_SIZE		256
 
-#if defined(CONFIG_ARCH_OMAP1)
-#error "iommu for this processor not implemented yet"
-#else
-#include <plat/iommu2.h>
-#endif
+/*
+ * MMU Register bit definitions
+ */
+#define MMU_CAM_VATAG_SHIFT	12
+#define MMU_CAM_VATAG_MASK \
+	((~0UL >> MMU_CAM_VATAG_SHIFT) << MMU_CAM_VATAG_SHIFT)
+#define MMU_CAM_P		(1 << 3)
+#define MMU_CAM_V		(1 << 2)
+#define MMU_CAM_PGSZ_MASK	3
+#define MMU_CAM_PGSZ_1M		(0 << 0)
+#define MMU_CAM_PGSZ_64K	(1 << 0)
+#define MMU_CAM_PGSZ_4K		(2 << 0)
+#define MMU_CAM_PGSZ_16M	(3 << 0)
+
+#define MMU_RAM_PADDR_SHIFT	12
+#define MMU_RAM_PADDR_MASK \
+	((~0UL >> MMU_RAM_PADDR_SHIFT) << MMU_RAM_PADDR_SHIFT)
+
+#define MMU_RAM_ENDIAN_MASK	(1 << MMU_RAM_ENDIAN_SHIFT)
+#define MMU_RAM_ENDIAN_BIG	(1 << MMU_RAM_ENDIAN_SHIFT)
+
+#define MMU_RAM_ELSZ_MASK	(3 << MMU_RAM_ELSZ_SHIFT)
+#define MMU_RAM_ELSZ_8		(0 << MMU_RAM_ELSZ_SHIFT)
+#define MMU_RAM_ELSZ_16		(1 << MMU_RAM_ELSZ_SHIFT)
+#define MMU_RAM_ELSZ_32		(2 << MMU_RAM_ELSZ_SHIFT)
+#define MMU_RAM_ELSZ_NONE	(3 << MMU_RAM_ELSZ_SHIFT)
+#define MMU_RAM_MIXED_SHIFT	6
+#define MMU_RAM_MIXED_MASK	(1 << MMU_RAM_MIXED_SHIFT)
+#define MMU_RAM_MIXED		MMU_RAM_MIXED_MASK
 
 /*
  * utilities for super page(16MB, 1MB, 64KB and 4KB)
@@ -199,23 +200,29 @@ extern void omap_iotlb_cr_to_e(struct cr_regs *cr, struct iotlb_entry *e);
 extern int
 omap_iopgtable_store_entry(struct omap_iommu *obj, struct iotlb_entry *e);
 
-extern int omap_iommu_set_isr(const char *name,
-		 int (*isr)(struct omap_iommu *obj, u32 da, u32 iommu_errs,
-				    void *priv),
-			 void *isr_priv);
-
 extern void omap_iommu_save_ctx(struct device *dev);
 extern void omap_iommu_restore_ctx(struct device *dev);
 
-extern int omap_install_iommu_arch(const struct iommu_functions *ops);
-extern void omap_uninstall_iommu_arch(const struct iommu_functions *ops);
-
 extern int omap_foreach_iommu_device(void *data,
 				int (*fn)(struct device *, void *));
 
+extern int omap_install_iommu_arch(const struct iommu_functions *ops);
+extern void omap_uninstall_iommu_arch(const struct iommu_functions *ops);
+
 extern ssize_t
 omap_iommu_dump_ctx(struct omap_iommu *obj, char *buf, ssize_t len);
 extern size_t
 omap_dump_tlb_entries(struct omap_iommu *obj, char *buf, ssize_t len);
 
-#endif /* __MACH_IOMMU_H */
+/*
+ * register accessors
+ */
+static inline u32 iommu_read_reg(struct omap_iommu *obj, size_t offs)
+{
+	return __raw_readl(obj->regbase + offs);
+}
+
+static inline void iommu_write_reg(struct omap_iommu *obj, u32 val, size_t offs)
+{
+	__raw_writel(val, obj->regbase + offs);
+}
diff --git a/arch/arm/mach-omap2/iommu2.c b/drivers/iommu/omap-iommu2.c
index eefc379..c020202 100644
--- a/arch/arm/mach-omap2/iommu2.c
+++ b/drivers/iommu/omap-iommu2.c
@@ -13,12 +13,15 @@
 
 #include <linux/err.h>
 #include <linux/device.h>
+#include <linux/io.h>
 #include <linux/jiffies.h>
 #include <linux/module.h>
+#include <linux/omap-iommu.h>
 #include <linux/slab.h>
 #include <linux/stringify.h>
+#include <linux/platform_data/iommu-omap.h>
 
-#include <plat/iommu.h>
+#include "omap-iommu.h"
 
 /*
  * omap2 architecture specific register bit definitions
@@ -65,6 +68,12 @@
 	 ((pgsz) == MMU_CAM_PGSZ_64K) ? 0xffff0000 :	\
 	 ((pgsz) == MMU_CAM_PGSZ_4K)  ? 0xfffff000 : 0)
 
+/* IOMMU errors */
+#define OMAP_IOMMU_ERR_TLB_MISS		(1 << 0)
+#define OMAP_IOMMU_ERR_TRANS_FAULT	(1 << 1)
+#define OMAP_IOMMU_ERR_EMU_MISS		(1 << 2)
+#define OMAP_IOMMU_ERR_TBLWALK_FAULT	(1 << 3)
+#define OMAP_IOMMU_ERR_MULTIHIT_FAULT	(1 << 4)
 
 static void __iommu_set_twl(struct omap_iommu *obj, bool on)
 {
diff --git a/arch/arm/plat-omap/include/plat/iopgtable.h b/drivers/iommu/omap-iopgtable.h
index 66a8139..cd4ae9e 100644
--- a/arch/arm/plat-omap/include/plat/iopgtable.h
+++ b/drivers/iommu/omap-iopgtable.h
@@ -10,9 +10,6 @@
  * published by the Free Software Foundation.
  */
 
-#ifndef __PLAT_OMAP_IOMMU_H
-#define __PLAT_OMAP_IOMMU_H
-
 /*
  * "L2 table" address mask and size definitions.
  */
@@ -97,24 +94,5 @@ static inline phys_addr_t omap_iommu_translate(u32 d, u32 va, u32 mask)
 #define iopte_index(da)		(((da) >> IOPTE_SHIFT) & (PTRS_PER_IOPTE - 1))
 #define iopte_offset(iopgd, da)	(iopgd_page_vaddr(iopgd) + iopte_index(da))
 
-static inline u32 iotlb_init_entry(struct iotlb_entry *e, u32 da, u32 pa,
-				   u32 flags)
-{
-	memset(e, 0, sizeof(*e));
-
-	e->da		= da;
-	e->pa		= pa;
-	e->valid	= 1;
-	/* FIXME: add OMAP1 support */
-	e->pgsz		= flags & MMU_CAM_PGSZ_MASK;
-	e->endian	= flags & MMU_RAM_ENDIAN_MASK;
-	e->elsz		= flags & MMU_RAM_ELSZ_MASK;
-	e->mixed	= flags & MMU_RAM_MIXED_MASK;
-
-	return iopgsz_to_bytes(e->pgsz);
-}
-
 #define to_iommu(dev)							\
 	(struct omap_iommu *)platform_get_drvdata(to_platform_device(dev))
-
-#endif /* __PLAT_OMAP_IOMMU_H */
diff --git a/drivers/iommu/omap-iovmm.c b/drivers/iommu/omap-iovmm.c
index 2e10c3e..46d87569 100644
--- a/drivers/iommu/omap-iovmm.c
+++ b/drivers/iommu/omap-iovmm.c
@@ -17,14 +17,58 @@
 #include <linux/device.h>
 #include <linux/scatterlist.h>
 #include <linux/iommu.h>
+#include <linux/omap-iommu.h>
+#include <linux/platform_data/iommu-omap.h>
 
 #include <asm/cacheflush.h>
 #include <asm/mach/map.h>
 
-#include <plat/iommu.h>
-#include <plat/iovmm.h>
+#include "omap-iopgtable.h"
+#include "omap-iommu.h"
 
-#include <plat/iopgtable.h>
+/*
+ * IOVMF_FLAGS: attribute for iommu virtual memory area(iovma)
+ *
+ * lower 16 bit is used for h/w and upper 16 bit is for s/w.
+ */
+#define IOVMF_SW_SHIFT		16
+
+/*
+ * iovma: h/w flags derived from cam and ram attribute
+ */
+#define IOVMF_CAM_MASK		(~((1 << 10) - 1))
+#define IOVMF_RAM_MASK		(~IOVMF_CAM_MASK)
+
+#define IOVMF_PGSZ_MASK		(3 << 0)
+#define IOVMF_PGSZ_1M		MMU_CAM_PGSZ_1M
+#define IOVMF_PGSZ_64K		MMU_CAM_PGSZ_64K
+#define IOVMF_PGSZ_4K		MMU_CAM_PGSZ_4K
+#define IOVMF_PGSZ_16M		MMU_CAM_PGSZ_16M
+
+#define IOVMF_ENDIAN_MASK	(1 << 9)
+#define IOVMF_ENDIAN_BIG	MMU_RAM_ENDIAN_BIG
+
+#define IOVMF_ELSZ_MASK		(3 << 7)
+#define IOVMF_ELSZ_16		MMU_RAM_ELSZ_16
+#define IOVMF_ELSZ_32		MMU_RAM_ELSZ_32
+#define IOVMF_ELSZ_NONE		MMU_RAM_ELSZ_NONE
+
+#define IOVMF_MIXED_MASK	(1 << 6)
+#define IOVMF_MIXED		MMU_RAM_MIXED
+
+/*
+ * iovma: s/w flags, used for mapping and umapping internally.
+ */
+#define IOVMF_MMIO		(1 << IOVMF_SW_SHIFT)
+#define IOVMF_ALLOC		(2 << IOVMF_SW_SHIFT)
+#define IOVMF_ALLOC_MASK	(3 << IOVMF_SW_SHIFT)
+
+/* "superpages" is supported just with physically linear pages */
+#define IOVMF_DISCONT		(1 << (2 + IOVMF_SW_SHIFT))
+#define IOVMF_LINEAR		(2 << (2 + IOVMF_SW_SHIFT))
+#define IOVMF_LINEAR_MASK	(3 << (2 + IOVMF_SW_SHIFT))
+
+#define IOVMF_DA_FIXED		(1 << (4 + IOVMF_SW_SHIFT))
 
 static struct kmem_cache *iovm_area_cachep;
 
diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index 99640d8..7f182f0 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -61,6 +61,7 @@
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
+#include <linux/omap-iommu.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
diff --git a/drivers/media/platform/omap3isp/isp.h b/drivers/media/platform/omap3isp/isp.h
index 8be7487..8d68669 100644
--- a/drivers/media/platform/omap3isp/isp.h
+++ b/drivers/media/platform/omap3isp/isp.h
@@ -31,11 +31,9 @@
 #include <media/v4l2-device.h>
 #include <linux/device.h>
 #include <linux/io.h>
+#include <linux/iommu.h>
 #include <linux/platform_device.h>
 #include <linux/wait.h>
-#include <linux/iommu.h>
-#include <plat/iommu.h>
-#include <plat/iovmm.h>
 
 #include "ispstat.h"
 #include "ispccdc.h"
diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c
index 60181ab..6ae1ffb2 100644
--- a/drivers/media/platform/omap3isp/ispccdc.c
+++ b/drivers/media/platform/omap3isp/ispccdc.c
@@ -30,6 +30,7 @@
 #include <linux/device.h>
 #include <linux/dma-mapping.h>
 #include <linux/mm.h>
+#include <linux/omap-iommu.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <media/v4l2-event.h>
diff --git a/drivers/media/platform/omap3isp/ispstat.c b/drivers/media/platform/omap3isp/ispstat.c
index d7ac76b..35c3823 100644
--- a/drivers/media/platform/omap3isp/ispstat.c
+++ b/drivers/media/platform/omap3isp/ispstat.c
@@ -26,6 +26,7 @@
  */
 
 #include <linux/dma-mapping.h>
+#include <linux/omap-iommu.h>
 #include <linux/slab.h>
 #include <linux/uaccess.h>
 
diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c
index 5bd40e6..c4be4fa 100644
--- a/drivers/media/platform/omap3isp/ispvideo.c
+++ b/drivers/media/platform/omap3isp/ispvideo.c
@@ -27,6 +27,7 @@
 #include <linux/clk.h>
 #include <linux/mm.h>
 #include <linux/module.h>
+#include <linux/omap-iommu.h>
 #include <linux/pagemap.h>
 #include <linux/scatterlist.h>
 #include <linux/sched.h>
@@ -36,6 +37,7 @@
 #include <media/v4l2-ioctl.h>
 #include <plat/iommu.h>
 #include <plat/iovmm.h>
+#include <plat/omap-pm.h>
 
 #include "ispvideo.h"
 #include "isp.h"
diff --git a/include/linux/omap-iommu.h b/include/linux/omap-iommu.h
new file mode 100644
index 0000000..cac78de
--- /dev/null
+++ b/include/linux/omap-iommu.h
@@ -0,0 +1,52 @@
+/*
+ * omap iommu: simple virtual address space management
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _INTEL_IOMMU_H_
+#define _INTEL_IOMMU_H_
+
+struct iovm_struct {
+	struct omap_iommu	*iommu;	/* iommu object which this belongs to */
+	u32			da_start; /* area definition */
+	u32			da_end;
+	u32			flags; /* IOVMF_: see below */
+	struct list_head	list; /* linked in ascending order */
+	const struct sg_table	*sgt; /* keep 'page' <-> 'da' mapping */
+	void			*va; /* mpu side mapped address */
+};
+
+#define MMU_RAM_ENDIAN_SHIFT	9
+#define MMU_RAM_ENDIAN_LITTLE	(0 << MMU_RAM_ENDIAN_SHIFT)
+#define MMU_RAM_ELSZ_8		(0 << MMU_RAM_ELSZ_SHIFT)
+#define IOVMF_ENDIAN_LITTLE	MMU_RAM_ENDIAN_LITTLE
+#define MMU_RAM_ELSZ_SHIFT	7
+#define IOVMF_ELSZ_8		MMU_RAM_ELSZ_8
+
+struct iommu_domain;
+
+extern struct iovm_struct *omap_find_iovm_area(struct device *dev, u32 da);
+extern u32
+omap_iommu_vmap(struct iommu_domain *domain, struct device *dev, u32 da,
+			const struct sg_table *sgt, u32 flags);
+extern struct sg_table *omap_iommu_vunmap(struct iommu_domain *domain,
+				struct device *dev, u32 da);
+extern u32
+omap_iommu_vmalloc(struct iommu_domain *domain, struct device *dev,
+				u32 da, size_t bytes, u32 flags);
+extern void
+omap_iommu_vfree(struct iommu_domain *domain, struct device *dev,
+				const u32 da);
+extern void *omap_da_to_va(struct device *dev, u32 da);
+
+extern void omap_iommu_save_ctx(struct device *dev);
+extern void omap_iommu_restore_ctx(struct device *dev);
+
+#endif
diff --git a/include/linux/platform_data/iommu-omap.h b/include/linux/platform_data/iommu-omap.h
new file mode 100644
index 0000000..c677b9f
--- /dev/null
+++ b/include/linux/platform_data/iommu-omap.h
@@ -0,0 +1,49 @@
+/*
+ * omap iommu: main structures
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define MMU_REG_SIZE		256
+
+/**
+ * struct iommu_arch_data - omap iommu private data
+ * @name: name of the iommu device
+ * @iommu_dev: handle of the iommu device
+ *
+ * This is an omap iommu private data object, which binds an iommu user
+ * to its iommu device. This object should be placed at the iommu user's
+ * dev_archdata so generic IOMMU API can be used without having to
+ * utilize omap-specific plumbing anymore.
+ */
+struct omap_iommu_arch_data {
+	const char *name;
+	struct omap_iommu *iommu_dev;
+};
+
+/**
+ * struct omap_mmu_dev_attr - OMAP mmu device attributes for omap_hwmod
+ * @da_start:		device address where the va space starts.
+ * @da_end:		device address where the va space ends.
+ * @nr_tlb_entries:	number of entries supported by the translation
+ *			look-aside buffer (TLB).
+ */
+struct omap_mmu_dev_attr {
+	u32 da_start;
+	u32 da_end;
+	int nr_tlb_entries;
+};
+
+struct iommu_platform_data {
+	const char *name;
+	const char *clk_name;
+	const int nr_tlb_entries;
+	u32 da_start;
+	u32 da_end;
+};