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Merge branches 'arm/exynos', 'arm/omap', 'arm/rockchip', 'arm/mediatek', 'arm/smmu', 'arm/core', 'x86/vt-d', 'x86/amd' and 'core' into next

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This commit is contained in:
Joerg Roedel 2017-05-04 18:06:17 +02:00
commit 2c0248d688
1088 changed files with 14838 additions and 7824 deletions
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76
include/linux/iommu.h
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@ -19,12 +19,12 @@
#ifndef __LINUX_IOMMU_H
#define __LINUX_IOMMU_H
#include <linux/scatterlist.h>
#include <linux/device.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/types.h>
#include <linux/scatterlist.h>
#include <trace/events/iommu.h>
#define IOMMU_READ (1 << 0)
#define IOMMU_WRITE (1 << 1)
@ -32,10 +32,13 @@
#define IOMMU_NOEXEC (1 << 3)
#define IOMMU_MMIO (1 << 4) /* e.g. things like MSI doorbells */
/*
* This is to make the IOMMU API setup privileged
* mapppings accessible by the master only at higher
* privileged execution level and inaccessible at
* less privileged levels.
* Where the bus hardware includes a privilege level as part of its access type
* markings, and certain devices are capable of issuing transactions marked as
* either 'supervisor' or 'user', the IOMMU_PRIV flag requests that the other
* given permission flags only apply to accesses at the higher privilege level,
* and that unprivileged transactions should have as little access as possible.
* This would usually imply the same permissions as kernel mappings on the CPU,
* if the IOMMU page table format is equivalent.
*/
#define IOMMU_PRIV (1 << 5)
@ -125,9 +128,16 @@ enum iommu_attr {
};
/* These are the possible reserved region types */
#define IOMMU_RESV_DIRECT (1 << 0)
#define IOMMU_RESV_RESERVED (1 << 1)
#define IOMMU_RESV_MSI (1 << 2)
enum iommu_resv_type {
/* Memory regions which must be mapped 1:1 at all times */
IOMMU_RESV_DIRECT,
/* Arbitrary "never map this or give it to a device" address ranges */
IOMMU_RESV_RESERVED,
/* Hardware MSI region (untranslated) */
IOMMU_RESV_MSI,
/* Software-managed MSI translation window */
IOMMU_RESV_SW_MSI,
};
/**
* struct iommu_resv_region - descriptor for a reserved memory region
@ -142,7 +152,7 @@ struct iommu_resv_region {
phys_addr_t start;
size_t length;
int prot;
int type;
enum iommu_resv_type type;
};
#ifdef CONFIG_IOMMU_API
@ -288,7 +298,8 @@ extern void iommu_get_resv_regions(struct device *dev, struct list_head *list);
extern void iommu_put_resv_regions(struct device *dev, struct list_head *list);
extern int iommu_request_dm_for_dev(struct device *dev);
extern struct iommu_resv_region *
iommu_alloc_resv_region(phys_addr_t start, size_t length, int prot, int type);
iommu_alloc_resv_region(phys_addr_t start, size_t length, int prot,
enum iommu_resv_type type);
extern int iommu_get_group_resv_regions(struct iommu_group *group,
struct list_head *head);
@ -328,46 +339,9 @@ extern int iommu_domain_window_enable(struct iommu_domain *domain, u32 wnd_nr,
phys_addr_t offset, u64 size,
int prot);
extern void iommu_domain_window_disable(struct iommu_domain *domain, u32 wnd_nr);
/**
* report_iommu_fault() - report about an IOMMU fault to the IOMMU framework
* @domain: the iommu domain where the fault has happened
* @dev: the device where the fault has happened
* @iova: the faulting address
* @flags: mmu fault flags (e.g. IOMMU_FAULT_READ/IOMMU_FAULT_WRITE/...)
*
* This function should be called by the low-level IOMMU implementations
* whenever IOMMU faults happen, to allow high-level users, that are
* interested in such events, to know about them.
*
* This event may be useful for several possible use cases:
* - mere logging of the event
* - dynamic TLB/PTE loading
* - if restarting of the faulting device is required
*
* Returns 0 on success and an appropriate error code otherwise (if dynamic
* PTE/TLB loading will one day be supported, implementations will be able
* to tell whether it succeeded or not according to this return value).
*
* Specifically, -ENOSYS is returned if a fault handler isn't installed
* (though fault handlers can also return -ENOSYS, in case they want to
* elicit the default behavior of the IOMMU drivers).
*/
static inline int report_iommu_fault(struct iommu_domain *domain,
struct device *dev, unsigned long iova, int flags)
{
int ret = -ENOSYS;
/*
* if upper layers showed interest and installed a fault handler,
* invoke it.
*/
if (domain->handler)
ret = domain->handler(domain, dev, iova, flags,
domain->handler_token);
trace_io_page_fault(dev, iova, flags);
return ret;
}
extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev,
unsigned long iova, int flags);
static inline size_t iommu_map_sg(struct iommu_domain *domain,
unsigned long iova, struct scatterlist *sg,