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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-12 14:45:16 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-12 14:45:16 -0500
commit8287361abca36504da813638310d2547469283eb (patch)
tree8d98e9a910885efdb09ae5390a3ae44040557e2f /include/linux/omap-iommu.h
parent2989950cea13711f0cc573c26cde8fe08a36be03 (diff)
parent8556650dd3370a927217f16444aac5cc0c71e61b (diff)
Merge tag 'headers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC Header cleanups from Olof Johansson: "This is a collection of header file cleanups, mostly for OMAP and AT91, that keeps moving the platforms in the direction of multiplatform by removing the need for mach-dependent header files used in drivers and other places." Fix up mostly trivial conflicts as per Olof. * tag 'headers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (106 commits) 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 atmel: move ATMEL_MAX_UART to platform_data/atmel.h ARM: OMAP: Remove omap_init_consistent_dma_size() arm: at91: move at91rm9200 rtc header in drivers/rtc arm: at91: move reset controller header to arm/arm/mach-at91 arm: at91: move pit define to the driver arm: at91: move at91_shdwc.h to arch/arm/mach-at91 arm: at91: move board header to arch/arm/mach-at91 arn: at91: move at91_tc.h to arch/arm/mach-at91 arm: at91 move at91_aic.h to arch/arm/mach-at91 arm: at91 move board.h to arch/arm/mach-at91 arm: at91: move platfarm_data to include/linux/platform_data/atmel.h arm: at91: drop machine defconfig ARM: OMAP: Remove NEED_MACH_GPIO_H ARM: OMAP: Remove unnecessary mach and plat includes ...
Diffstat (limited to 'include/linux/omap-iommu.h')
-rw-r--r--include/linux/omap-iommu.h52
1 files changed, 52 insertions, 0 deletions
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 @@
1/*
2 * omap iommu: simple virtual address space management
3 *
4 * Copyright (C) 2008-2009 Nokia Corporation
5 *
6 * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13#ifndef _INTEL_IOMMU_H_
14#define _INTEL_IOMMU_H_
15
16struct iovm_struct {
17 struct omap_iommu *iommu; /* iommu object which this belongs to */
18 u32 da_start; /* area definition */
19 u32 da_end;
20 u32 flags; /* IOVMF_: see below */
21 struct list_head list; /* linked in ascending order */
22 const struct sg_table *sgt; /* keep 'page' <-> 'da' mapping */
23 void *va; /* mpu side mapped address */
24};
25
26#define MMU_RAM_ENDIAN_SHIFT 9
27#define MMU_RAM_ENDIAN_LITTLE (0 << MMU_RAM_ENDIAN_SHIFT)
28#define MMU_RAM_ELSZ_8 (0 << MMU_RAM_ELSZ_SHIFT)
29#define IOVMF_ENDIAN_LITTLE MMU_RAM_ENDIAN_LITTLE
30#define MMU_RAM_ELSZ_SHIFT 7
31#define IOVMF_ELSZ_8 MMU_RAM_ELSZ_8
32
33struct iommu_domain;
34
35extern struct iovm_struct *omap_find_iovm_area(struct device *dev, u32 da);
36extern u32
37omap_iommu_vmap(struct iommu_domain *domain, struct device *dev, u32 da,
38 const struct sg_table *sgt, u32 flags);
39extern struct sg_table *omap_iommu_vunmap(struct iommu_domain *domain,
40 struct device *dev, u32 da);
41extern u32
42omap_iommu_vmalloc(struct iommu_domain *domain, struct device *dev,
43 u32 da, size_t bytes, u32 flags);
44extern void
45omap_iommu_vfree(struct iommu_domain *domain, struct device *dev,
46 const u32 da);
47extern void *omap_da_to_va(struct device *dev, u32 da);
48
49extern void omap_iommu_save_ctx(struct device *dev);
50extern void omap_iommu_restore_ctx(struct device *dev);
51
52#endif