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iommu: Allow io-pgtable to be used outside of drivers/iommu/

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Move io-pgtable.h to include/linux/ and export alloc_io_pgtable_ops
and free_io_pgtable_ops. This enables drivers outside drivers/iommu/ to
use the page table library. Specifically, some ARM Mali GPUs use the
ARM page table formats.

Cc: Will Deacon <will.deacon@arm.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Rob Clark <robdclark@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: iommu@lists.linux-foundation.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-arm-msm@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Rob Herring 2019-02-05 10:37:31 -06:00 committed by Joerg Roedel
parent c61a4633a5
commit b77cf11f09
10 changed files with 11 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/iommu/arm-smmu-v3.c
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@ -18,6 +18,7 @@
#include <linux/dma-iommu.h>
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/io-pgtable.h>
#include <linux/iommu.h>
#include <linux/iopoll.h>
#include <linux/init.h>
@ -32,8 +33,6 @@
#include <linux/amba/bus.h>
#include "io-pgtable.h"
/* MMIO registers */
#define ARM_SMMU_IDR0 0x0
#define IDR0_ST_LVL GENMASK(28, 27)

2
drivers/iommu/arm-smmu.c
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@ -39,6 +39,7 @@
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/io-64-nonatomic-hi-lo.h>
#include <linux/io-pgtable.h>
#include <linux/iommu.h>
#include <linux/iopoll.h>
#include <linux/init.h>
@ -56,7 +57,6 @@
#include <linux/amba/bus.h>
#include <linux/fsl/mc.h>
#include "io-pgtable.h"
#include "arm-smmu-regs.h"
#define ARM_MMU500_ACTLR_CPRE (1 << 1)

3
drivers/iommu/io-pgtable-arm-v7s.c
View File

@ -35,6 +35,7 @@
#include <linux/atomic.h>
#include <linux/dma-mapping.h>
#include <linux/gfp.h>
#include <linux/io-pgtable.h>
#include <linux/iommu.h>
#include <linux/kernel.h>
#include <linux/kmemleak.h>
@ -45,8 +46,6 @@
#include <asm/barrier.h>
#include "io-pgtable.h"
/* Struct accessors */
#define io_pgtable_to_data(x) \
container_of((x), struct arm_v7s_io_pgtable, iop)

3
drivers/iommu/io-pgtable-arm.c
View File

@ -22,6 +22,7 @@
#include <linux/atomic.h>
#include <linux/bitops.h>
#include <linux/io-pgtable.h>
#include <linux/iommu.h>
#include <linux/kernel.h>
#include <linux/sizes.h>
@ -31,8 +32,6 @@
#include <asm/barrier.h>
#include "io-pgtable.h"
#define ARM_LPAE_MAX_ADDR_BITS 52
#define ARM_LPAE_S2_MAX_CONCAT_PAGES 16
#define ARM_LPAE_MAX_LEVELS 4

5
drivers/iommu/io-pgtable.c
View File

@ -19,11 +19,10 @@
*/
#include <linux/bug.h>
#include <linux/io-pgtable.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include "io-pgtable.h"
static const struct io_pgtable_init_fns *
io_pgtable_init_table[IO_PGTABLE_NUM_FMTS] = {
#ifdef CONFIG_IOMMU_IO_PGTABLE_LPAE
@ -61,6 +60,7 @@ struct io_pgtable_ops *alloc_io_pgtable_ops(enum io_pgtable_fmt fmt,
return &iop->ops;
}
EXPORT_SYMBOL_GPL(alloc_io_pgtable_ops);
/*
* It is the IOMMU driver's responsibility to ensure that the page table
@ -77,3 +77,4 @@ void free_io_pgtable_ops(struct io_pgtable_ops *ops)
io_pgtable_tlb_flush_all(iop);
io_pgtable_init_table[iop->fmt]->free(iop);
}
EXPORT_SYMBOL_GPL(free_io_pgtable_ops);

3
drivers/iommu/ipmmu-vmsa.c
View File

@ -15,6 +15,7 @@
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/io-pgtable.h>
#include <linux/iommu.h>
#include <linux/of.h>
#include <linux/of_device.h>
@ -35,8 +36,6 @@
#define arm_iommu_detach_device(...) do {} while (0)
#endif
#include "io-pgtable.h"
#define IPMMU_CTX_MAX 8
struct ipmmu_features {

2
drivers/iommu/msm_iommu.c
View File

@ -23,6 +23,7 @@
#include <linux/platform_device.h>
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/io-pgtable.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/spinlock.h>
@ -37,7 +38,6 @@
#include "msm_iommu_hw-8xxx.h"
#include "msm_iommu.h"
#include "io-pgtable.h"
#define MRC(reg, processor, op1, crn, crm, op2) \
__asm__ __volatile__ ( \

3
drivers/iommu/mtk_iommu.h
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@ -19,13 +19,12 @@
#include <linux/component.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/io-pgtable.h>
#include <linux/iommu.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <soc/mediatek/smi.h>
#include "io-pgtable.h"
struct mtk_iommu_suspend_reg {
u32 standard_axi_mode;
u32 dcm_dis;

2
drivers/iommu/qcom_iommu.c
View File

@ -26,6 +26,7 @@
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/io-64-nonatomic-hi-lo.h>
#include <linux/io-pgtable.h>
#include <linux/iommu.h>
#include <linux/iopoll.h>
#include <linux/kconfig.h>
@ -42,7 +43,6 @@
#include <linux/slab.h>
#include <linux/spinlock.h>
#include "io-pgtable.h"
#include "arm-smmu-regs.h"
#define SMMU_INTR_SEL_NS 0x2000

0
drivers/iommu/io-pgtable.h → include/linux/io-pgtable.h
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