1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/user_exp_rcv.h b/drivers/infiniband/hw/hfi1/user_exp_rcv.h
new file mode 100644
index 000000000..f8ee997d0
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/user_exp_rcv.h
@@ -0,0 +1,66 @@
+/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
+/*
+ * Copyright(c) 2020 - Cornelis Networks, Inc.
+ * Copyright(c) 2015 - 2017 Intel Corporation.
+ */
+
+#ifndef _HFI1_USER_EXP_RCV_H
+#define _HFI1_USER_EXP_RCV_H
+
+#include "hfi.h"
+#include "exp_rcv.h"
+
+struct tid_pageset {
+	u16 idx;
+	u16 count;
+};
+
+struct tid_user_buf {
+	struct mmu_interval_notifier notifier;
+	struct mutex cover_mutex;
+	unsigned long vaddr;
+	unsigned long length;
+	unsigned int npages;
+	struct page **pages;
+	struct tid_pageset *psets;
+	unsigned int n_psets;
+};
+
+struct tid_rb_node {
+	struct mmu_interval_notifier notifier;
+	struct hfi1_filedata *fdata;
+	struct mutex invalidate_mutex; /* covers hw removal */
+	unsigned long phys;
+	struct tid_group *grp;
+	u32 rcventry;
+	dma_addr_t dma_addr;
+	bool freed;
+	unsigned int npages;
+	struct page *pages[];
+};
+
+static inline int num_user_pages(unsigned long addr,
+				 unsigned long len)
+{
+	const unsigned long spage = addr & PAGE_MASK;
+	const unsigned long epage = (addr + len - 1) & PAGE_MASK;
+
+	return 1 + ((epage - spage) >> PAGE_SHIFT);
+}
+
+int hfi1_user_exp_rcv_init(struct hfi1_filedata *fd,
+			   struct hfi1_ctxtdata *uctxt);
+void hfi1_user_exp_rcv_free(struct hfi1_filedata *fd);
+int hfi1_user_exp_rcv_setup(struct hfi1_filedata *fd,
+			    struct hfi1_tid_info *tinfo);
+int hfi1_user_exp_rcv_clear(struct hfi1_filedata *fd,
+			    struct hfi1_tid_info *tinfo);
+int hfi1_user_exp_rcv_invalid(struct hfi1_filedata *fd,
+			      struct hfi1_tid_info *tinfo);
+
+static inline struct mm_struct *mm_from_tid_node(struct tid_rb_node *node)
+{
+	return node->notifier.mm;
+}
+
+#endif /* _HFI1_USER_EXP_RCV_H */