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authorOlof Johansson <olof@lixom.net>2012-12-01 00:38:59 -0500
committerOlof Johansson <olof@lixom.net>2012-12-01 00:38:59 -0500
commit794b175fc0c0c4844dbb7b137a73bbfd01f6c608 (patch)
tree69b9394b5b09118f9877cd02838a7cd2d7c4f63c /drivers/iommu/omap-iovmm.c
parent4fabb6332a2b747c7f6783f146a8fb3d2f88d91c (diff)
parent2ab7c84815cffd5fe4946a472fc67fefa8ac3c29 (diff)
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>
Diffstat (limited to 'drivers/iommu/omap-iovmm.c')
-rw-r--r--drivers/iommu/omap-iovmm.c50
1 files changed, 47 insertions, 3 deletions
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 @@
17#include <linux/device.h> 17#include <linux/device.h>
18#include <linux/scatterlist.h> 18#include <linux/scatterlist.h>
19#include <linux/iommu.h> 19#include <linux/iommu.h>
20#include <linux/omap-iommu.h>
21#include <linux/platform_data/iommu-omap.h>
20 22
21#include <asm/cacheflush.h> 23#include <asm/cacheflush.h>
22#include <asm/mach/map.h> 24#include <asm/mach/map.h>
23 25
24#include <plat/iommu.h> 26#include "omap-iopgtable.h"
25#include <plat/iovmm.h> 27#include "omap-iommu.h"
26 28
27#include <plat/iopgtable.h> 29/*
30 * IOVMF_FLAGS: attribute for iommu virtual memory area(iovma)
31 *
32 * lower 16 bit is used for h/w and upper 16 bit is for s/w.
33 */
34#define IOVMF_SW_SHIFT 16
35
36/*
37 * iovma: h/w flags derived from cam and ram attribute
38 */
39#define IOVMF_CAM_MASK (~((1 << 10) - 1))
40#define IOVMF_RAM_MASK (~IOVMF_CAM_MASK)
41
42#define IOVMF_PGSZ_MASK (3 << 0)
43#define IOVMF_PGSZ_1M MMU_CAM_PGSZ_1M
44#define IOVMF_PGSZ_64K MMU_CAM_PGSZ_64K
45#define IOVMF_PGSZ_4K MMU_CAM_PGSZ_4K
46#define IOVMF_PGSZ_16M MMU_CAM_PGSZ_16M
47
48#define IOVMF_ENDIAN_MASK (1 << 9)
49#define IOVMF_ENDIAN_BIG MMU_RAM_ENDIAN_BIG
50
51#define IOVMF_ELSZ_MASK (3 << 7)
52#define IOVMF_ELSZ_16 MMU_RAM_ELSZ_16
53#define IOVMF_ELSZ_32 MMU_RAM_ELSZ_32
54#define IOVMF_ELSZ_NONE MMU_RAM_ELSZ_NONE
55
56#define IOVMF_MIXED_MASK (1 << 6)
57#define IOVMF_MIXED MMU_RAM_MIXED
58
59/*
60 * iovma: s/w flags, used for mapping and umapping internally.
61 */
62#define IOVMF_MMIO (1 << IOVMF_SW_SHIFT)
63#define IOVMF_ALLOC (2 << IOVMF_SW_SHIFT)
64#define IOVMF_ALLOC_MASK (3 << IOVMF_SW_SHIFT)
65
66/* "superpages" is supported just with physically linear pages */
67#define IOVMF_DISCONT (1 << (2 + IOVMF_SW_SHIFT))
68#define IOVMF_LINEAR (2 << (2 + IOVMF_SW_SHIFT))
69#define IOVMF_LINEAR_MASK (3 << (2 + IOVMF_SW_SHIFT))
70
71#define IOVMF_DA_FIXED (1 << (4 + IOVMF_SW_SHIFT))
28 72
29static struct kmem_cache *iovm_area_cachep; 73static struct kmem_cache *iovm_area_cachep;
30 74