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authorOlof Johansson <olof@lixom.net>2012-11-30 21:38:59 -0800
committerOlof Johansson <olof@lixom.net>2012-11-30 21:38:59 -0800
commit794b175fc0c0c4844dbb7b137a73bbfd01f6c608 (patch)
tree69b9394b5b09118f9877cd02838a7cd2d7c4f63c
parent4fabb6332a2b747c7f6783f146a8fb3d2f88d91c (diff)
parent2ab7c84815cffd5fe4946a472fc67fefa8ac3c29 (diff)
downloadlinux-794b175fc0c0c4844dbb7b137a73bbfd01f6c608.tar.bz2
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>
-rw-r--r--arch/arm/mach-omap2/Makefile2
-rw-r--r--arch/arm/mach-omap2/devices.c2
-rw-r--r--arch/arm/mach-omap2/omap-iommu.c2
-rw-r--r--arch/arm/mach-omap2/omap_hwmod_3xxx_data.c2
-rw-r--r--arch/arm/mach-omap2/omap_hwmod_44xx_data.c2
-rw-r--r--arch/arm/plat-omap/include/plat/iommu2.h96
-rw-r--r--arch/arm/plat-omap/include/plat/iovmm.h89
-rw-r--r--drivers/iommu/Makefile1
-rw-r--r--drivers/iommu/omap-iommu-debug.c8
-rw-r--r--drivers/iommu/omap-iommu.c39
-rw-r--r--drivers/iommu/omap-iommu.h (renamed from arch/arm/plat-omap/include/plat/iommu.h)133
-rw-r--r--drivers/iommu/omap-iommu2.c (renamed from arch/arm/mach-omap2/iommu2.c)11
-rw-r--r--drivers/iommu/omap-iopgtable.h (renamed from arch/arm/plat-omap/include/plat/iopgtable.h)22
-rw-r--r--drivers/iommu/omap-iovmm.c50
-rw-r--r--drivers/media/platform/omap3isp/isp.c1
-rw-r--r--drivers/media/platform/omap3isp/isp.h4
-rw-r--r--drivers/media/platform/omap3isp/ispccdc.c1
-rw-r--r--drivers/media/platform/omap3isp/ispstat.c1
-rw-r--r--drivers/media/platform/omap3isp/ispvideo.c2
-rw-r--r--include/linux/omap-iommu.h52
-rw-r--r--include/linux/platform_data/iommu-omap.h49
21 files changed, 280 insertions, 289 deletions
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index dd76ff77760b..11c57af01a88 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 d2215e9873a5..3cff7dc514df 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 df298d46707c..a6a4ff8744b7 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 addc1c24ca2e..7f73f2132acc 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 f5b55a78a5f0..26f8e9f18190 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 d4116b595e40..000000000000
--- 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 498e57cda6cd..000000000000
--- 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 14a4d5fc94fa..f66b816d455c 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 f55fc5dfbadc..d97fbe4fb9b1 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 d0b1234581be..badc17c2bcb4 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 68b5f0362f35..2b5f3c04d167 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 eefc37912ef3..c02020292377 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 66a813977d52..cd4ae9e5b0c6 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 2e10c3e0a7ae..46d875690739 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 99640d8c1db0..7f182f0ff3da 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 8be7487c326f..8d6866942b85 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 60181ab96063..6ae1ffb277e7 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 d7ac76b5c2ae..35c38237449d 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 5bd40e6870cc..c4be4fa8a7d7 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 000000000000..cac78de09c07
--- /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 000000000000..c677b9f2fefa
--- /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;
+};