/*
+ * Copyright(c) 2016 Intel Corporation.
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
- * Copyright(c) 2015 Intel Corporation.
- *
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* BSD LICENSE
*
- * Copyright(c) 2015 Intel Corporation.
- *
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
*/
-#include <linux/module.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/mm.h>
-#include <linux/errno.h>
#include <asm/pgtable.h>
+#include "mmap.h"
-#include "verbs.h"
+/**
+ * rvt_mmap_init - init link list and lock for mem map
+ * @rdi: rvt dev struct
+ */
+void rvt_mmap_init(struct rvt_dev_info *rdi)
+{
+ INIT_LIST_HEAD(&rdi->pending_mmaps);
+ spin_lock_init(&rdi->pending_lock);
+ rdi->mmap_offset = PAGE_SIZE;
+ spin_lock_init(&rdi->mmap_offset_lock);
+}
/**
- * hfi1_release_mmap_info - free mmap info structure
- * @ref: a pointer to the kref within struct hfi1_mmap_info
+ * rvt_release_mmap_info - free mmap info structure
+ * @ref: a pointer to the kref within struct rvt_mmap_info
*/
-void hfi1_release_mmap_info(struct kref *ref)
+void rvt_release_mmap_info(struct kref *ref)
{
- struct hfi1_mmap_info *ip =
- container_of(ref, struct hfi1_mmap_info, ref);
- struct hfi1_ibdev *dev = to_idev(ip->context->device);
+ struct rvt_mmap_info *ip =
+ container_of(ref, struct rvt_mmap_info, ref);
+ struct rvt_dev_info *rdi = ib_to_rvt(ip->context->device);
- spin_lock_irq(&dev->pending_lock);
+ spin_lock_irq(&rdi->pending_lock);
list_del(&ip->pending_mmaps);
- spin_unlock_irq(&dev->pending_lock);
+ spin_unlock_irq(&rdi->pending_lock);
vfree(ip->obj);
kfree(ip);
}
-/*
- * open and close keep track of how many times the CQ is mapped,
- * to avoid releasing it.
- */
-static void hfi1_vma_open(struct vm_area_struct *vma)
+static void rvt_vma_open(struct vm_area_struct *vma)
{
- struct hfi1_mmap_info *ip = vma->vm_private_data;
+ struct rvt_mmap_info *ip = vma->vm_private_data;
kref_get(&ip->ref);
}
-static void hfi1_vma_close(struct vm_area_struct *vma)
+static void rvt_vma_close(struct vm_area_struct *vma)
{
- struct hfi1_mmap_info *ip = vma->vm_private_data;
+ struct rvt_mmap_info *ip = vma->vm_private_data;
- kref_put(&ip->ref, hfi1_release_mmap_info);
+ kref_put(&ip->ref, rvt_release_mmap_info);
}
-static struct vm_operations_struct hfi1_vm_ops = {
- .open = hfi1_vma_open,
- .close = hfi1_vma_close,
+static const struct vm_operations_struct rvt_vm_ops = {
+ .open = rvt_vma_open,
+ .close = rvt_vma_close,
};
/**
- * hfi1_mmap - create a new mmap region
+ * rvt_mmap - create a new mmap region
* @context: the IB user context of the process making the mmap() call
* @vma: the VMA to be initialized
- * Return zero if the mmap is OK. Otherwise, return an errno.
+ *
+ * Return: zero if the mmap is OK. Otherwise, return an errno.
*/
-int hfi1_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
+int rvt_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
{
- struct hfi1_ibdev *dev = to_idev(context->device);
+ struct rvt_dev_info *rdi = ib_to_rvt(context->device);
unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
unsigned long size = vma->vm_end - vma->vm_start;
- struct hfi1_mmap_info *ip, *pp;
+ struct rvt_mmap_info *ip, *pp;
int ret = -EINVAL;
/*
* Normally, this list is very short since a call to create a
* CQ, QP, or SRQ is soon followed by a call to mmap().
*/
- spin_lock_irq(&dev->pending_lock);
- list_for_each_entry_safe(ip, pp, &dev->pending_mmaps,
+ spin_lock_irq(&rdi->pending_lock);
+ list_for_each_entry_safe(ip, pp, &rdi->pending_mmaps,
pending_mmaps) {
/* Only the creator is allowed to mmap the object */
- if (context != ip->context || (__u64) offset != ip->offset)
+ if (context != ip->context || (__u64)offset != ip->offset)
continue;
/* Don't allow a mmap larger than the object. */
if (size > ip->size)
break;
list_del_init(&ip->pending_mmaps);
- spin_unlock_irq(&dev->pending_lock);
+ spin_unlock_irq(&rdi->pending_lock);
ret = remap_vmalloc_range(vma, ip->obj, 0);
if (ret)
goto done;
- vma->vm_ops = &hfi1_vm_ops;
+ vma->vm_ops = &rvt_vm_ops;
vma->vm_private_data = ip;
- hfi1_vma_open(vma);
+ rvt_vma_open(vma);
goto done;
}
- spin_unlock_irq(&dev->pending_lock);
+ spin_unlock_irq(&rdi->pending_lock);
done:
return ret;
}
-/*
- * Allocate information for hfi1_mmap
+/**
+ * rvt_create_mmap_info - allocate information for hfi1_mmap
+ * @rdi: rvt dev struct
+ * @size: size in bytes to map
+ * @context: user context
+ * @obj: opaque pointer to a cq, wq etc
+ *
+ * Return: rvt_mmap struct on success
*/
-struct hfi1_mmap_info *hfi1_create_mmap_info(struct hfi1_ibdev *dev,
- u32 size,
- struct ib_ucontext *context,
- void *obj) {
- struct hfi1_mmap_info *ip;
+struct rvt_mmap_info *rvt_create_mmap_info(struct rvt_dev_info *rdi,
+ u32 size,
+ struct ib_ucontext *context,
+ void *obj)
+{
+ struct rvt_mmap_info *ip;
- ip = kmalloc(sizeof(*ip), GFP_KERNEL);
+ ip = kmalloc_node(sizeof(*ip), GFP_KERNEL, rdi->dparms.node);
if (!ip)
- goto bail;
+ return ip;
size = PAGE_ALIGN(size);
- spin_lock_irq(&dev->mmap_offset_lock);
- if (dev->mmap_offset == 0)
- dev->mmap_offset = PAGE_SIZE;
- ip->offset = dev->mmap_offset;
- dev->mmap_offset += size;
- spin_unlock_irq(&dev->mmap_offset_lock);
+ spin_lock_irq(&rdi->mmap_offset_lock);
+ if (rdi->mmap_offset == 0)
+ rdi->mmap_offset = PAGE_SIZE;
+ ip->offset = rdi->mmap_offset;
+ rdi->mmap_offset += size;
+ spin_unlock_irq(&rdi->mmap_offset_lock);
INIT_LIST_HEAD(&ip->pending_mmaps);
ip->size = size;
ip->obj = obj;
kref_init(&ip->ref);
-bail:
return ip;
}
-void hfi1_update_mmap_info(struct hfi1_ibdev *dev, struct hfi1_mmap_info *ip,
- u32 size, void *obj)
+/**
+ * rvt_update_mmap_info - update a mem map
+ * @rdi: rvt dev struct
+ * @ip: mmap info pointer
+ * @size: size to grow by
+ * @obj: opaque pointer to cq, wq, etc.
+ */
+void rvt_update_mmap_info(struct rvt_dev_info *rdi, struct rvt_mmap_info *ip,
+ u32 size, void *obj)
{
size = PAGE_ALIGN(size);
- spin_lock_irq(&dev->mmap_offset_lock);
- if (dev->mmap_offset == 0)
- dev->mmap_offset = PAGE_SIZE;
- ip->offset = dev->mmap_offset;
- dev->mmap_offset += size;
- spin_unlock_irq(&dev->mmap_offset_lock);
+ spin_lock_irq(&rdi->mmap_offset_lock);
+ if (rdi->mmap_offset == 0)
+ rdi->mmap_offset = PAGE_SIZE;
+ ip->offset = rdi->mmap_offset;
+ rdi->mmap_offset += size;
+ spin_unlock_irq(&rdi->mmap_offset_lock);
ip->size = size;
ip->obj = obj;
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