diff options
author | Ido Yariv <ido@wizery.com> | 2012-11-02 19:24:00 (GMT) |
---|---|---|
committer | Tony Lindgren <tony@atomide.com> | 2012-11-20 18:04:17 (GMT) |
commit | 2f7702af64d6ae7ae8b7f6d5dca1bf8bdaf0ac1f (patch) | |
tree | fe291fa5a0154a4d6a19a8cc2b2d3a814ab91105 /drivers/iommu | |
parent | 8953fe54e7bd0f8cf1a763204e0e3b9e32bcc223 (diff) | |
download | linux-2f7702af64d6ae7ae8b7f6d5dca1bf8bdaf0ac1f.tar.xz |
ARM: OMAP2+: Move iopgtable header to drivers/iommu/
The iopgtable header file is only used by the iommu & iovmm drivers, so
move it to drivers/iommu/, as part of the single zImage effort.
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Omar Ramirez Luna <omar.luna@linaro.org>
Signed-off-by: Ido Yariv <ido@wizery.com>
Acked-by: Ohad Ben-Cohen <ohad@wizery.com>
Acked-by: Joerg Roedel <joro@8bytes.org>
[tony@atomide.com: updated to be earlier in the series]
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'drivers/iommu')
-rw-r--r-- | drivers/iommu/omap-iommu-debug.c | 2 | ||||
-rw-r--r-- | drivers/iommu/omap-iommu.c | 2 | ||||
-rw-r--r-- | drivers/iommu/omap-iopgtable.h | 120 | ||||
-rw-r--r-- | drivers/iommu/omap-iovmm.c | 2 |
4 files changed, 123 insertions, 3 deletions
diff --git a/drivers/iommu/omap-iommu-debug.c b/drivers/iommu/omap-iommu-debug.c index f55fc5d..0cac372 100644 --- a/drivers/iommu/omap-iommu-debug.c +++ b/drivers/iommu/omap-iommu-debug.c @@ -22,7 +22,7 @@ #include <plat/iommu.h> #include <plat/iovmm.h> -#include <plat/iopgtable.h> +#include "omap-iopgtable.h" #define MAXCOLUMN 100 /* for short messages */ diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index d0b1234..f2bbfb0 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -26,7 +26,7 @@ #include <plat/iommu.h> -#include <plat/iopgtable.h> +#include "omap-iopgtable.h" #define for_each_iotlb_cr(obj, n, __i, cr) \ for (__i = 0; \ diff --git a/drivers/iommu/omap-iopgtable.h b/drivers/iommu/omap-iopgtable.h new file mode 100644 index 0000000..66a8139 --- /dev/null +++ b/drivers/iommu/omap-iopgtable.h @@ -0,0 +1,120 @@ +/* + * omap iommu: pagetable definitions + * + * Copyright (C) 2008-2010 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 __PLAT_OMAP_IOMMU_H +#define __PLAT_OMAP_IOMMU_H + +/* + * "L2 table" address mask and size definitions. + */ +#define IOPGD_SHIFT 20 +#define IOPGD_SIZE (1UL << IOPGD_SHIFT) +#define IOPGD_MASK (~(IOPGD_SIZE - 1)) + +/* + * "section" address mask and size definitions. + */ +#define IOSECTION_SHIFT 20 +#define IOSECTION_SIZE (1UL << IOSECTION_SHIFT) +#define IOSECTION_MASK (~(IOSECTION_SIZE - 1)) + +/* + * "supersection" address mask and size definitions. + */ +#define IOSUPER_SHIFT 24 +#define IOSUPER_SIZE (1UL << IOSUPER_SHIFT) +#define IOSUPER_MASK (~(IOSUPER_SIZE - 1)) + +#define PTRS_PER_IOPGD (1UL << (32 - IOPGD_SHIFT)) +#define IOPGD_TABLE_SIZE (PTRS_PER_IOPGD * sizeof(u32)) + +/* + * "small page" address mask and size definitions. + */ +#define IOPTE_SHIFT 12 +#define IOPTE_SIZE (1UL << IOPTE_SHIFT) +#define IOPTE_MASK (~(IOPTE_SIZE - 1)) + +/* + * "large page" address mask and size definitions. + */ +#define IOLARGE_SHIFT 16 +#define IOLARGE_SIZE (1UL << IOLARGE_SHIFT) +#define IOLARGE_MASK (~(IOLARGE_SIZE - 1)) + +#define PTRS_PER_IOPTE (1UL << (IOPGD_SHIFT - IOPTE_SHIFT)) +#define IOPTE_TABLE_SIZE (PTRS_PER_IOPTE * sizeof(u32)) + +#define IOPAGE_MASK IOPTE_MASK + +/** + * omap_iommu_translate() - va to pa translation + * @d: omap iommu descriptor + * @va: virtual address + * @mask: omap iommu descriptor mask + * + * va to pa translation + */ +static inline phys_addr_t omap_iommu_translate(u32 d, u32 va, u32 mask) +{ + return (d & mask) | (va & (~mask)); +} + +/* + * some descriptor attributes. + */ +#define IOPGD_TABLE (1 << 0) +#define IOPGD_SECTION (2 << 0) +#define IOPGD_SUPER (1 << 18 | 2 << 0) + +#define iopgd_is_table(x) (((x) & 3) == IOPGD_TABLE) +#define iopgd_is_section(x) (((x) & (1 << 18 | 3)) == IOPGD_SECTION) +#define iopgd_is_super(x) (((x) & (1 << 18 | 3)) == IOPGD_SUPER) + +#define IOPTE_SMALL (2 << 0) +#define IOPTE_LARGE (1 << 0) + +#define iopte_is_small(x) (((x) & 2) == IOPTE_SMALL) +#define iopte_is_large(x) (((x) & 3) == IOPTE_LARGE) + +/* to find an entry in a page-table-directory */ +#define iopgd_index(da) (((da) >> IOPGD_SHIFT) & (PTRS_PER_IOPGD - 1)) +#define iopgd_offset(obj, da) ((obj)->iopgd + iopgd_index(da)) + +#define iopgd_page_paddr(iopgd) (*iopgd & ~((1 << 10) - 1)) +#define iopgd_page_vaddr(iopgd) ((u32 *)phys_to_virt(iopgd_page_paddr(iopgd))) + +/* to find an entry in the second-level page table. */ +#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..b332392 100644 --- a/drivers/iommu/omap-iovmm.c +++ b/drivers/iommu/omap-iovmm.c @@ -24,7 +24,7 @@ #include <plat/iommu.h> #include <plat/iovmm.h> -#include <plat/iopgtable.h> +#include "omap-iopgtable.h" static struct kmem_cache *iovm_area_cachep; |