Differential D10858 Diff 28682 sys/ofed/include/rdma/ib_umem.h

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sys/ofed/include/rdma/ib_umem.h

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	*/			*/

	#ifndef IB_UMEM_H			#ifndef IB_UMEM_H
	#define IB_UMEM_H			#define IB_UMEM_H

	#include <linux/list.h>			#include <linux/list.h>
	#include <linux/scatterlist.h>			#include <linux/scatterlist.h>
	#include <linux/workqueue.h>			#include <linux/workqueue.h>
	#include <linux/dma-attrs.h>
	#include <linux/completion.h>
	#include <rdma/ib_peer_mem.h>

	struct ib_ucontext;			struct ib_ucontext;
	struct ib_umem;			struct ib_umem_odp;

	typedef void (umem_invalidate_func_t)(void invalidation_cookie,
	struct ib_umem *umem,
	unsigned long addr, size_t size);

	struct invalidation_ctx {
	struct ib_umem *umem;
	umem_invalidate_func_t func;
	void *cookie;
	unsigned long context_ticket;
	int peer_callback;
	int inflight_invalidation;
	int peer_invalidated;
	struct completion comp;
	};

	struct ib_umem {			struct ib_umem {
	struct ib_ucontext *context;			struct ib_ucontext *context;
	size_t length;			size_t length;
	int offset;			unsigned long address;
	int page_size;			int page_size;
	int writable;			int writable;
	int hugetlb;
	struct work_struct work;			struct work_struct work;
				pid_t pid;
				struct mm_struct *mm;
	unsigned long diff;			unsigned long diff;
	unsigned long start;			struct ib_umem_odp *odp_data;
	struct sg_table sg_head;			struct sg_table sg_head;
	int nmap;			int nmap;
	int npages;			int npages;
	/* peer memory that manages this umem*/
	struct ib_peer_memory_client *ib_peer_mem;
	struct invalidation_ctx *invalidation_ctx;
	int peer_mem_srcu_key;
	/* peer memory private context */
	void *peer_mem_client_context;
	};			};

				/* Returns the offset of the umem start relative to the first page. */
				static inline int ib_umem_offset(struct ib_umem *umem)
				{
				return umem->address & ((unsigned long)umem->page_size - 1);
				}

				/* Returns the first page of an ODP umem. */
				static inline unsigned long ib_umem_start(struct ib_umem *umem)
				{
				return umem->address - ib_umem_offset(umem);
				}

				/* Returns the address of the page after the last one of an ODP umem. */
				static inline unsigned long ib_umem_end(struct ib_umem *umem)
				{
				return PAGE_ALIGN(umem->address + umem->length);
				}

				static inline size_t ib_umem_num_pages(struct ib_umem *umem)
				{
				return (ib_umem_end(umem) - ib_umem_start(umem)) >> PAGE_SHIFT;
				}

				#ifdef CONFIG_INFINIBAND_USER_MEM

	struct ib_umem ib_umem_get(struct ib_ucontext context, unsigned long addr,			struct ib_umem ib_umem_get(struct ib_ucontext context, unsigned long addr,
	size_t size, int access, int dmasync);			size_t size, int access, int dmasync);
	struct ib_umem ib_umem_get_ex(struct ib_ucontext context, unsigned long addr,
	size_t size, int access, int dmasync,
	int invalidation_supported);
	void ib_umem_activate_invalidation_notifier(struct ib_umem *umem,
	umem_invalidate_func_t func,
	void *cookie);
	void ib_umem_release(struct ib_umem *umem);			void ib_umem_release(struct ib_umem *umem);
	int ib_umem_page_count(struct ib_umem *umem);			int ib_umem_page_count(struct ib_umem *umem);
				int ib_umem_copy_from(void dst, struct ib_umem umem, size_t offset,
				size_t length);

				#else /* CONFIG_INFINIBAND_USER_MEM */

				#include <linux/err.h>

				static inline struct ib_umem ib_umem_get(struct ib_ucontext context,
				unsigned long addr, size_t size,
				int access, int dmasync) {
				return ERR_PTR(-EINVAL);
				}
				static inline void ib_umem_release(struct ib_umem *umem) { }
				static inline int ib_umem_page_count(struct ib_umem *umem) { return 0; }
				static inline int ib_umem_copy_from(void dst, struct ib_umem umem, size_t offset,
				size_t length) {
				return -EINVAL;
				}
				#endif /* CONFIG_INFINIBAND_USER_MEM */

	#endif /* IB_UMEM_H */			#endif /* IB_UMEM_H */