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| author |   Tony Lindgren <tony@atomide.com> | 2012-11-02 12:24:03 -0700 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2012-11-20 10:04:29 -0800 |
| commit | c8d35c84f5494d8d294205b598f927a11fd41f34 (patch) | |
| tree | 2a28d6147cc9a0790419d4a2b5ae8ff75919f4f6 /include/linux/omap-iommu.h | |
| parent | ARM: OMAP2+: Move iopgtable header to drivers/iommu/ (diff) | |
| download | linux-dev-c8d35c84f5494d8d294205b598f927a11fd41f34.tar.xz linux-dev-c8d35c84f5494d8d294205b598f927a11fd41f34.zip | |
ARM: OMAP2+: Move plat/iovmm.h to include/linux/omap-iommu.h
Looks like the iommu framework does not have generic functions
exported for all the needs yet. The hardware specific functions
are defined in files like intel-iommu.h and amd-iommu.h. Follow
the same standard for omap-iommu.h.
This is needed because we are removing plat and mach includes
for ARM common zImage support. Further work should continue
in the iommu framework context as only pure platform data will
be communicated from arch/arm/*omap*/* code to the iommu
framework.
Cc: Ido Yariv <ido@wizery.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Omar Ramirez Luna <omar.luna@linaro.org>
Cc: linux-media@vger.kernel.org
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Ohad Ben-Cohen <ohad@wizery.com>
Acked-by: Joerg Roedel <joro@8bytes.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'include/linux/omap-iommu.h')
| -rw-r--r-- | include/linux/omap-iommu.h | 52 |
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 @@ +/* + * 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 |