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iommu/vtd: Cleanup dma_remapping.h header 

Commit e61d98d8da ("x64, x2apic/intr-remap: Intel vt-d, IOMMU
code reorganization") moved dma_remapping.h from drivers/pci/ to
current place. It is entirely VT-d specific, but uses a generic
name. This merges dma_remapping.h with include/linux/intel-iommu.h
and removes dma_remapping.h as the result.

Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Sohil Mehta <sohil.mehta@intel.com>
Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Liu, Yi L <yi.l.liu@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
hifive-unleashed-5.1
Lu Baolu 2018-11-12 14:40:08 +08:00 committed by Joerg Roedel
parent ccda4af0f4
commit daedaa33d9
8 changed files with 53 additions and 66 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/kernel/tboot.c
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@ -19,7 +19,7 @@
*
*/
#include <linux/dma_remapping.h>
#include <linux/intel-iommu.h>
#include <linux/init_task.h>
#include <linux/spinlock.h>
#include <linux/export.h>

2
drivers/gpu/drm/i915/i915_gem_execbuffer.c
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@ -26,7 +26,7 @@
*
*/
#include <linux/dma_remapping.h>
#include <linux/intel-iommu.h>
#include <linux/reservation.h>
#include <linux/sync_file.h>
#include <linux/uaccess.h>

2
drivers/gpu/drm/i915/intel_display.c
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@ -47,7 +47,7 @@
#include <drm/drm_plane_helper.h>
#include <drm/drm_rect.h>
#include <drm/drm_atomic_uapi.h>
#include <linux/dma_remapping.h>
#include <linux/intel-iommu.h>
#include <linux/reservation.h>
/* Primary plane formats for gen <= 3 */

2
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
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@ -34,7 +34,7 @@
#include <drm/ttm/ttm_placement.h>
#include <drm/ttm/ttm_bo_driver.h>
#include <drm/ttm/ttm_module.h>
#include <linux/dma_remapping.h>
#include <linux/intel-iommu.h>
#define VMWGFX_DRIVER_DESC "Linux drm driver for VMware graphics devices"
#define VMWGFX_CHIP_SVGAII 0

2
drivers/misc/mic/scif/scif_rma.c
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@ -15,7 +15,7 @@
* Intel SCIF driver.
*
*/
#include <linux/dma_remapping.h>
#include <linux/intel-iommu.h>
#include <linux/pagemap.h>
#include <linux/sched/mm.h>
#include <linux/sched/signal.h>

2
drivers/misc/mic/scif/scif_rma.h
View File

@ -53,7 +53,7 @@
#ifndef SCIF_RMA_H
#define SCIF_RMA_H
#include <linux/dma_remapping.h>
#include <linux/intel-iommu.h>
#include <linux/mmu_notifier.h>
#include "../bus/scif_bus.h"

58
include/linux/dma_remapping.h
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@ -1,58 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _DMA_REMAPPING_H
#define _DMA_REMAPPING_H
/*
* VT-d hardware uses 4KiB page size regardless of host page size.
*/
#define VTD_PAGE_SHIFT (12)
#define VTD_PAGE_SIZE (1UL << VTD_PAGE_SHIFT)
#define VTD_PAGE_MASK (((u64)-1) << VTD_PAGE_SHIFT)
#define VTD_PAGE_ALIGN(addr) (((addr) + VTD_PAGE_SIZE - 1) & VTD_PAGE_MASK)
#define VTD_STRIDE_SHIFT (9)
#define VTD_STRIDE_MASK (((u64)-1) << VTD_STRIDE_SHIFT)
#define DMA_PTE_READ (1)
#define DMA_PTE_WRITE (2)
#define DMA_PTE_LARGE_PAGE (1 << 7)
#define DMA_PTE_SNP (1 << 11)
#define CONTEXT_TT_MULTI_LEVEL 0
#define CONTEXT_TT_DEV_IOTLB 1
#define CONTEXT_TT_PASS_THROUGH 2
/* Extended context entry types */
#define CONTEXT_TT_PT_PASID 4
#define CONTEXT_TT_PT_PASID_DEV_IOTLB 5
#define CONTEXT_TT_MASK (7ULL << 2)
#define CONTEXT_DINVE (1ULL << 8)
#define CONTEXT_PRS (1ULL << 9)
#define CONTEXT_PASIDE (1ULL << 11)
struct intel_iommu;
struct dmar_domain;
struct root_entry;
#ifdef CONFIG_INTEL_IOMMU
extern int iommu_calculate_agaw(struct intel_iommu *iommu);
extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu);
extern int dmar_disabled;
extern int intel_iommu_enabled;
extern int intel_iommu_tboot_noforce;
#else
static inline int iommu_calculate_agaw(struct intel_iommu *iommu)
{
return 0;
}
static inline int iommu_calculate_max_sagaw(struct intel_iommu *iommu)
{
return 0;
}
#define dmar_disabled (1)
#define intel_iommu_enabled (0)
#endif
#endif

49
include/linux/intel-iommu.h
View File

@ -26,7 +26,6 @@
#include <linux/iova.h>
#include <linux/io.h>
#include <linux/idr.h>
#include <linux/dma_remapping.h>
#include <linux/mmu_notifier.h>
#include <linux/list.h>
#include <linux/iommu.h>
@ -36,10 +35,37 @@
#include <asm/cacheflush.h>
#include <asm/iommu.h>
/*
* VT-d hardware uses 4KiB page size regardless of host page size.
*/
#define VTD_PAGE_SHIFT (12)
#define VTD_PAGE_SIZE (1UL << VTD_PAGE_SHIFT)
#define VTD_PAGE_MASK (((u64)-1) << VTD_PAGE_SHIFT)
#define VTD_PAGE_ALIGN(addr) (((addr) + VTD_PAGE_SIZE - 1) & VTD_PAGE_MASK)
#define VTD_STRIDE_SHIFT (9)
#define VTD_STRIDE_MASK (((u64)-1) << VTD_STRIDE_SHIFT)
#define DMA_PTE_READ (1)
#define DMA_PTE_WRITE (2)
#define DMA_PTE_LARGE_PAGE (1 << 7)
#define DMA_PTE_SNP (1 << 11)
#define CONTEXT_TT_MULTI_LEVEL 0
#define CONTEXT_TT_DEV_IOTLB 1
#define CONTEXT_TT_PASS_THROUGH 2
/* Extended context entry types */
#define CONTEXT_TT_PT_PASID 4
#define CONTEXT_TT_PT_PASID_DEV_IOTLB 5
#define CONTEXT_TT_MASK (7ULL << 2)
#define CONTEXT_DINVE (1ULL << 8)
#define CONTEXT_PRS (1ULL << 9)
#define CONTEXT_PASIDE (1ULL << 11)
/*
* Intel IOMMU register specification per version 1.0 public spec.
*/
#define DMAR_VER_REG 0x0 /* Arch version supported by this IOMMU */
#define DMAR_CAP_REG 0x8 /* Hardware supported capabilities */
#define DMAR_ECAP_REG 0x10 /* Extended capabilities supported */
@ -632,4 +658,23 @@ bool context_present(struct context_entry *context);
struct context_entry *iommu_context_addr(struct intel_iommu *iommu, u8 bus,
u8 devfn, int alloc);
#ifdef CONFIG_INTEL_IOMMU
extern int iommu_calculate_agaw(struct intel_iommu *iommu);
extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu);
extern int dmar_disabled;
extern int intel_iommu_enabled;
extern int intel_iommu_tboot_noforce;
#else
static inline int iommu_calculate_agaw(struct intel_iommu *iommu)
{
return 0;
}
static inline int iommu_calculate_max_sagaw(struct intel_iommu *iommu)
{
return 0;
}
#define dmar_disabled (1)
#define intel_iommu_enabled (0)
#endif
#endif