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6c32df437c
Prepend 'omap_' to OMAP's 'struct iommu' and exposed API, to prevent namespace pollution and generally to improve readability of the code that still uses the driver directly. Update the users as needed as well. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
120 lines
3.3 KiB
C
120 lines
3.3 KiB
C
/*
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* omap iommu: pagetable definitions
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*
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* Copyright (C) 2008-2010 Nokia Corporation
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*
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* Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __PLAT_OMAP_IOMMU_H
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#define __PLAT_OMAP_IOMMU_H
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/*
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* "L2 table" address mask and size definitions.
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*/
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#define IOPGD_SHIFT 20
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#define IOPGD_SIZE (1UL << IOPGD_SHIFT)
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#define IOPGD_MASK (~(IOPGD_SIZE - 1))
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/*
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* "section" address mask and size definitions.
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*/
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#define IOSECTION_SHIFT 20
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#define IOSECTION_SIZE (1UL << IOSECTION_SHIFT)
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#define IOSECTION_MASK (~(IOSECTION_SIZE - 1))
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/*
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* "supersection" address mask and size definitions.
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*/
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#define IOSUPER_SHIFT 24
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#define IOSUPER_SIZE (1UL << IOSUPER_SHIFT)
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#define IOSUPER_MASK (~(IOSUPER_SIZE - 1))
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#define PTRS_PER_IOPGD (1UL << (32 - IOPGD_SHIFT))
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#define IOPGD_TABLE_SIZE (PTRS_PER_IOPGD * sizeof(u32))
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/*
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* "small page" address mask and size definitions.
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*/
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#define IOPTE_SHIFT 12
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#define IOPTE_SIZE (1UL << IOPTE_SHIFT)
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#define IOPTE_MASK (~(IOPTE_SIZE - 1))
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/*
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* "large page" address mask and size definitions.
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*/
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#define IOLARGE_SHIFT 16
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#define IOLARGE_SIZE (1UL << IOLARGE_SHIFT)
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#define IOLARGE_MASK (~(IOLARGE_SIZE - 1))
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#define PTRS_PER_IOPTE (1UL << (IOPGD_SHIFT - IOPTE_SHIFT))
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#define IOPTE_TABLE_SIZE (PTRS_PER_IOPTE * sizeof(u32))
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#define IOPAGE_MASK IOPTE_MASK
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/**
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* omap_iommu_translate() - va to pa translation
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* @d: omap iommu descriptor
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* @va: virtual address
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* @mask: omap iommu descriptor mask
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*
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* va to pa translation
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*/
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static inline phys_addr_t omap_iommu_translate(u32 d, u32 va, u32 mask)
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{
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return (d & mask) | (va & (~mask));
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}
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/*
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* some descriptor attributes.
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*/
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#define IOPGD_TABLE (1 << 0)
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#define IOPGD_SECTION (2 << 0)
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#define IOPGD_SUPER (1 << 18 | 2 << 0)
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#define iopgd_is_table(x) (((x) & 3) == IOPGD_TABLE)
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#define iopgd_is_section(x) (((x) & (1 << 18 | 3)) == IOPGD_SECTION)
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#define iopgd_is_super(x) (((x) & (1 << 18 | 3)) == IOPGD_SUPER)
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#define IOPTE_SMALL (2 << 0)
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#define IOPTE_LARGE (1 << 0)
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#define iopte_is_small(x) (((x) & 2) == IOPTE_SMALL)
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#define iopte_is_large(x) (((x) & 3) == IOPTE_LARGE)
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/* to find an entry in a page-table-directory */
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#define iopgd_index(da) (((da) >> IOPGD_SHIFT) & (PTRS_PER_IOPGD - 1))
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#define iopgd_offset(obj, da) ((obj)->iopgd + iopgd_index(da))
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#define iopgd_page_paddr(iopgd) (*iopgd & ~((1 << 10) - 1))
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#define iopgd_page_vaddr(iopgd) ((u32 *)phys_to_virt(iopgd_page_paddr(iopgd)))
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/* to find an entry in the second-level page table. */
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#define iopte_index(da) (((da) >> IOPTE_SHIFT) & (PTRS_PER_IOPTE - 1))
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#define iopte_offset(iopgd, da) (iopgd_page_vaddr(iopgd) + iopte_index(da))
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static inline u32 iotlb_init_entry(struct iotlb_entry *e, u32 da, u32 pa,
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u32 flags)
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{
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memset(e, 0, sizeof(*e));
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e->da = da;
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e->pa = pa;
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e->valid = 1;
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/* FIXME: add OMAP1 support */
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e->pgsz = flags & MMU_CAM_PGSZ_MASK;
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e->endian = flags & MMU_RAM_ENDIAN_MASK;
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e->elsz = flags & MMU_RAM_ELSZ_MASK;
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e->mixed = flags & MMU_RAM_MIXED_MASK;
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return iopgsz_to_bytes(e->pgsz);
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}
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#define to_iommu(dev) \
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(struct omap_iommu *)platform_get_drvdata(to_platform_device(dev))
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#endif /* __PLAT_OMAP_IOMMU_H */
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