From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/infiniband/hw/usnic/usnic_uiom.h | 94 ++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 drivers/infiniband/hw/usnic/usnic_uiom.h (limited to 'drivers/infiniband/hw/usnic/usnic_uiom.h') diff --git a/drivers/infiniband/hw/usnic/usnic_uiom.h b/drivers/infiniband/hw/usnic/usnic_uiom.h new file mode 100644 index 000000000..5a9acf941 --- /dev/null +++ b/drivers/infiniband/hw/usnic/usnic_uiom.h @@ -0,0 +1,94 @@ +/* + * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef USNIC_UIOM_H_ +#define USNIC_UIOM_H_ + +#include +#include + +#include "usnic_uiom_interval_tree.h" + +struct ib_ucontext; + +#define USNIC_UIOM_READ (1) +#define USNIC_UIOM_WRITE (2) + +#define USNIC_UIOM_MAX_PD_CNT (1000) +#define USNIC_UIOM_MAX_MR_CNT (1000000) +#define USNIC_UIOM_MAX_MR_SIZE (~0UL) +#define USNIC_UIOM_PAGE_SIZE (PAGE_SIZE) + +struct usnic_uiom_dev { + struct device *dev; + struct list_head link; +}; + +struct usnic_uiom_pd { + struct iommu_domain *domain; + spinlock_t lock; + struct rb_root_cached root; + struct list_head devs; + int dev_cnt; +}; + +struct usnic_uiom_reg { + struct usnic_uiom_pd *pd; + unsigned long va; + size_t length; + int offset; + int page_size; + int writable; + struct list_head chunk_list; + struct work_struct work; + struct mm_struct *owning_mm; +}; + +struct usnic_uiom_chunk { + struct list_head list; + int nents; + struct scatterlist page_list[]; +}; + +struct usnic_uiom_pd *usnic_uiom_alloc_pd(struct device *dev); +void usnic_uiom_dealloc_pd(struct usnic_uiom_pd *pd); +int usnic_uiom_attach_dev_to_pd(struct usnic_uiom_pd *pd, struct device *dev); +void usnic_uiom_detach_dev_from_pd(struct usnic_uiom_pd *pd, + struct device *dev); +struct device **usnic_uiom_get_dev_list(struct usnic_uiom_pd *pd); +void usnic_uiom_free_dev_list(struct device **devs); +struct usnic_uiom_reg *usnic_uiom_reg_get(struct usnic_uiom_pd *pd, + unsigned long addr, size_t size, + int access, int dmasync); +void usnic_uiom_reg_release(struct usnic_uiom_reg *uiomr); +#endif /* USNIC_UIOM_H_ */ -- cgit v1.2.3