311 lines
8.0 KiB
C
311 lines
8.0 KiB
C
/* Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 and
|
|
* only version 2 as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#ifndef _LINUX_MSM_IOMMU_DOMAINS_H
|
|
#define _LINUX_MSM_IOMMU_DOMAINS_H
|
|
|
|
#include <linux/errno.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/rbtree.h>
|
|
#include <linux/msm_ion.h>
|
|
|
|
#define MSM_IOMMU_DOMAIN_SECURE 0x1
|
|
|
|
struct mem_pool {
|
|
struct mutex pool_mutex;
|
|
unsigned long *bitmap;
|
|
unsigned long nr_pages;
|
|
phys_addr_t paddr;
|
|
unsigned long size;
|
|
unsigned long free;
|
|
unsigned int id;
|
|
};
|
|
|
|
enum {
|
|
VIDEO_DOMAIN,
|
|
CAMERA_DOMAIN,
|
|
DISPLAY_READ_DOMAIN,
|
|
DISPLAY_WRITE_DOMAIN,
|
|
ROTATOR_SRC_DOMAIN,
|
|
ROTATOR_DST_DOMAIN,
|
|
MAX_DOMAINS
|
|
};
|
|
|
|
enum {
|
|
VIDEO_FIRMWARE_POOL,
|
|
VIDEO_MAIN_POOL,
|
|
GEN_POOL,
|
|
};
|
|
|
|
struct msm_iommu_domain_name {
|
|
char *name;
|
|
int domain;
|
|
};
|
|
|
|
struct msm_iommu_domain {
|
|
/* iommu domain to map in */
|
|
struct iommu_domain *domain;
|
|
/* total number of allocations from this domain */
|
|
atomic_t allocation_cnt;
|
|
/* number of iova pools */
|
|
int npools;
|
|
/*
|
|
* array of gen_pools for allocating iovas.
|
|
* behavior is undefined if these overlap
|
|
*/
|
|
struct mem_pool *iova_pools;
|
|
};
|
|
|
|
struct iommu_domains_pdata {
|
|
struct msm_iommu_domain *domains;
|
|
int ndomains;
|
|
struct msm_iommu_domain_name *domain_names;
|
|
int nnames;
|
|
unsigned int domain_alloc_flags;
|
|
};
|
|
|
|
|
|
struct msm_iova_partition {
|
|
unsigned long start;
|
|
unsigned long size;
|
|
};
|
|
|
|
struct msm_iova_layout {
|
|
struct msm_iova_partition *partitions;
|
|
int npartitions;
|
|
const char *client_name;
|
|
unsigned int domain_flags;
|
|
unsigned int is_secure;
|
|
};
|
|
|
|
#if defined(CONFIG_MSM_IOMMU)
|
|
/**
|
|
* ion_map_iommu - map the given handle into an iommu
|
|
*
|
|
* @client - client who allocated the handle
|
|
* @handle - handle to map
|
|
* @domain_num - domain number to map to
|
|
* @partition_num - partition number to allocate iova from
|
|
* @align - alignment for the iova
|
|
* @iova_length - length of iova to map. If the iova length is
|
|
* greater than the handle length, the remaining
|
|
* address space will be mapped to a dummy buffer.
|
|
* @iova - pointer to store the iova address
|
|
* @buffer_size - pointer to store the size of the buffer
|
|
* @flags - flags for options to map
|
|
* @iommu_flags - flags specific to the iommu.
|
|
*
|
|
* Maps the handle into the iova space specified via domain number. Iova
|
|
* will be allocated from the partition specified via partition_num.
|
|
* Returns 0 on success, negative value on error.
|
|
*/
|
|
int ion_map_iommu(struct ion_client *client, struct ion_handle *handle,
|
|
int domain_num, int partition_num, unsigned long align,
|
|
unsigned long iova_length, ion_phys_addr_t *iova,
|
|
unsigned long *buffer_size,
|
|
unsigned long flags, unsigned long iommu_flags);
|
|
|
|
/**
|
|
* ion_unmap_iommu - unmap the handle from an iommu
|
|
*
|
|
* @client - client who allocated the handle
|
|
* @handle - handle to unmap
|
|
* @domain_num - domain to unmap from
|
|
* @partition_num - partition to unmap from
|
|
*
|
|
* Decrement the reference count on the iommu mapping. If the count is
|
|
* 0, the mapping will be removed from the iommu.
|
|
*/
|
|
void ion_unmap_iommu(struct ion_client *client, struct ion_handle *handle,
|
|
int domain_num, int partition_num);
|
|
|
|
extern void msm_iommu_set_client_name(struct iommu_domain *domain,
|
|
char const *name);
|
|
extern struct iommu_domain *msm_get_iommu_domain(int domain_num);
|
|
extern int msm_find_domain_no(const struct iommu_domain *domain);
|
|
extern struct iommu_domain *msm_iommu_domain_find(const char *name);
|
|
extern int msm_iommu_domain_no_find(const char *name);
|
|
|
|
|
|
extern int msm_allocate_iova_address(unsigned int iommu_domain,
|
|
unsigned int partition_no,
|
|
unsigned long size,
|
|
unsigned long align,
|
|
unsigned long *iova);
|
|
|
|
extern void msm_free_iova_address(unsigned long iova,
|
|
unsigned int iommu_domain,
|
|
unsigned int partition_no,
|
|
unsigned long size);
|
|
|
|
extern int msm_use_iommu(void);
|
|
|
|
extern int msm_iommu_map_extra(struct iommu_domain *domain,
|
|
unsigned long start_iova,
|
|
phys_addr_t phys_addr,
|
|
unsigned long size,
|
|
unsigned long page_size,
|
|
int cached);
|
|
|
|
extern void msm_iommu_unmap_extra(struct iommu_domain *domain,
|
|
unsigned long start_iova,
|
|
unsigned long size,
|
|
unsigned long page_size);
|
|
|
|
extern int msm_iommu_map_contig_buffer(phys_addr_t phys,
|
|
unsigned int domain_no,
|
|
unsigned int partition_no,
|
|
unsigned long size,
|
|
unsigned long align,
|
|
unsigned long cached,
|
|
dma_addr_t *iova_val);
|
|
|
|
|
|
extern void msm_iommu_unmap_contig_buffer(dma_addr_t iova,
|
|
unsigned int domain_no,
|
|
unsigned int partition_no,
|
|
unsigned long size);
|
|
|
|
extern int msm_register_domain(struct msm_iova_layout *layout);
|
|
extern int msm_unregister_domain(struct iommu_domain *domain);
|
|
|
|
int msm_map_dma_buf(struct dma_buf *dma_buf, struct sg_table *table,
|
|
int domain_num, int partition_num, unsigned long align,
|
|
unsigned long iova_length, ion_phys_addr_t *iova,
|
|
unsigned long *buffer_size,
|
|
unsigned long flags, unsigned long iommu_flags);
|
|
|
|
void msm_unmap_dma_buf(struct sg_table *table, int domain_num,
|
|
int partition_num);
|
|
#else
|
|
static inline int ion_map_iommu(struct ion_client *client,
|
|
struct ion_handle *handle, int domain_num,
|
|
int partition_num, unsigned long align,
|
|
unsigned long iova_length, ion_phys_addr_t *iova,
|
|
unsigned long *buffer_size,
|
|
unsigned long flags,
|
|
unsigned long iommu_flags)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline void ion_unmap_iommu(struct ion_client *client,
|
|
struct ion_handle *handle, int domain_num,
|
|
int partition_num)
|
|
{
|
|
}
|
|
|
|
static inline void msm_iommu_set_client_name(struct iommu_domain *domain,
|
|
char const *name)
|
|
{
|
|
}
|
|
|
|
static inline struct iommu_domain
|
|
*msm_get_iommu_domain(int subsys_id) { return NULL; }
|
|
|
|
|
|
static inline int msm_find_domain_no(const struct iommu_domain *domain)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int msm_allocate_iova_address(unsigned int iommu_domain,
|
|
unsigned int partition_no,
|
|
unsigned long size,
|
|
unsigned long align,
|
|
unsigned long *iova) { return -ENOMEM; }
|
|
|
|
static inline void msm_free_iova_address(unsigned long iova,
|
|
unsigned int iommu_domain,
|
|
unsigned int partition_no,
|
|
unsigned long size) { }
|
|
|
|
static inline int msm_use_iommu(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int msm_iommu_map_extra(struct iommu_domain *domain,
|
|
unsigned long start_iova,
|
|
phys_addr_t phys_addr,
|
|
unsigned long size,
|
|
unsigned long page_size,
|
|
int cached)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline void msm_iommu_unmap_extra(struct iommu_domain *domain,
|
|
unsigned long start_iova,
|
|
unsigned long size,
|
|
unsigned long page_size)
|
|
{
|
|
}
|
|
|
|
static inline int msm_iommu_map_contig_buffer(phys_addr_t phys,
|
|
unsigned int domain_no,
|
|
unsigned int partition_no,
|
|
unsigned long size,
|
|
unsigned long align,
|
|
unsigned long cached,
|
|
dma_addr_t *iova_val)
|
|
{
|
|
*iova_val = phys;
|
|
return 0;
|
|
}
|
|
|
|
static inline void msm_iommu_unmap_contig_buffer(dma_addr_t iova,
|
|
unsigned int domain_no,
|
|
unsigned int partition_no,
|
|
unsigned long size)
|
|
{
|
|
}
|
|
|
|
static inline int msm_register_domain(struct msm_iova_layout *layout)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline int msm_unregister_domain(struct iommu_domain *domain)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline struct iommu_domain *msm_iommu_domain_find(const char *name)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int msm_iommu_domain_no_find(const char *name)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline int msm_map_dma_buf(struct dma_buf *dma_buf,
|
|
struct sg_table *table,
|
|
int domain_num, int partition_num, unsigned long align,
|
|
unsigned long iova_length, ion_phys_addr_t *iova,
|
|
unsigned long *buffer_size,
|
|
unsigned long flags, unsigned long iommu_flags)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline void msm_unmap_dma_buf(struct sg_table *table, int domain_num,
|
|
int partition_num)
|
|
{
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|