874 lines
20 KiB
C
874 lines
20 KiB
C
/*
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* Copyright (c) 2004 Topspin Communications. All rights reserved.
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* Copyright (c) 2005 Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* $Id: mthca_mr.c 1349 2004-12-16 21:09:43Z roland $
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*/
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include "mthca_dev.h"
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#include "mthca_cmd.h"
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#include "mthca_memfree.h"
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struct mthca_mtt {
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struct mthca_buddy *buddy;
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int order;
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u32 first_seg;
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};
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/*
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* Must be packed because mtt_seg is 64 bits but only aligned to 32 bits.
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*/
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struct mthca_mpt_entry {
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__be32 flags;
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__be32 page_size;
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__be32 key;
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__be32 pd;
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__be64 start;
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__be64 length;
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__be32 lkey;
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__be32 window_count;
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__be32 window_count_limit;
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__be64 mtt_seg;
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__be32 mtt_sz; /* Arbel only */
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u32 reserved[2];
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} __attribute__((packed));
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#define MTHCA_MPT_FLAG_SW_OWNS (0xfUL << 28)
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#define MTHCA_MPT_FLAG_MIO (1 << 17)
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#define MTHCA_MPT_FLAG_BIND_ENABLE (1 << 15)
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#define MTHCA_MPT_FLAG_PHYSICAL (1 << 9)
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#define MTHCA_MPT_FLAG_REGION (1 << 8)
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#define MTHCA_MTT_FLAG_PRESENT 1
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#define MTHCA_MPT_STATUS_SW 0xF0
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#define MTHCA_MPT_STATUS_HW 0x00
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/*
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* Buddy allocator for MTT segments (currently not very efficient
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* since it doesn't keep a free list and just searches linearly
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* through the bitmaps)
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*/
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static u32 mthca_buddy_alloc(struct mthca_buddy *buddy, int order)
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{
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int o;
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int m;
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u32 seg;
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spin_lock(&buddy->lock);
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for (o = order; o <= buddy->max_order; ++o) {
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m = 1 << (buddy->max_order - o);
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seg = find_first_bit(buddy->bits[o], m);
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if (seg < m)
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goto found;
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}
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spin_unlock(&buddy->lock);
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return -1;
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found:
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clear_bit(seg, buddy->bits[o]);
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while (o > order) {
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--o;
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seg <<= 1;
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set_bit(seg ^ 1, buddy->bits[o]);
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}
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spin_unlock(&buddy->lock);
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seg <<= order;
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return seg;
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}
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static void mthca_buddy_free(struct mthca_buddy *buddy, u32 seg, int order)
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{
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seg >>= order;
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spin_lock(&buddy->lock);
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while (test_bit(seg ^ 1, buddy->bits[order])) {
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clear_bit(seg ^ 1, buddy->bits[order]);
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seg >>= 1;
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++order;
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}
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set_bit(seg, buddy->bits[order]);
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spin_unlock(&buddy->lock);
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}
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static int __devinit mthca_buddy_init(struct mthca_buddy *buddy, int max_order)
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{
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int i, s;
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buddy->max_order = max_order;
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spin_lock_init(&buddy->lock);
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buddy->bits = kmalloc((buddy->max_order + 1) * sizeof (long *),
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GFP_KERNEL);
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if (!buddy->bits)
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goto err_out;
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memset(buddy->bits, 0, (buddy->max_order + 1) * sizeof (long *));
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for (i = 0; i <= buddy->max_order; ++i) {
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s = BITS_TO_LONGS(1 << (buddy->max_order - i));
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buddy->bits[i] = kmalloc(s * sizeof (long), GFP_KERNEL);
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if (!buddy->bits[i])
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goto err_out_free;
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bitmap_zero(buddy->bits[i],
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1 << (buddy->max_order - i));
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}
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set_bit(0, buddy->bits[buddy->max_order]);
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return 0;
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err_out_free:
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for (i = 0; i <= buddy->max_order; ++i)
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kfree(buddy->bits[i]);
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kfree(buddy->bits);
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err_out:
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return -ENOMEM;
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}
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static void __devexit mthca_buddy_cleanup(struct mthca_buddy *buddy)
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{
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int i;
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for (i = 0; i <= buddy->max_order; ++i)
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kfree(buddy->bits[i]);
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kfree(buddy->bits);
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}
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static u32 mthca_alloc_mtt_range(struct mthca_dev *dev, int order,
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struct mthca_buddy *buddy)
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{
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u32 seg = mthca_buddy_alloc(buddy, order);
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if (seg == -1)
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return -1;
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if (mthca_is_memfree(dev))
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if (mthca_table_get_range(dev, dev->mr_table.mtt_table, seg,
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seg + (1 << order) - 1)) {
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mthca_buddy_free(buddy, seg, order);
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seg = -1;
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}
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return seg;
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}
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static struct mthca_mtt *__mthca_alloc_mtt(struct mthca_dev *dev, int size,
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struct mthca_buddy *buddy)
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{
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struct mthca_mtt *mtt;
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int i;
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if (size <= 0)
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return ERR_PTR(-EINVAL);
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mtt = kmalloc(sizeof *mtt, GFP_KERNEL);
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if (!mtt)
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return ERR_PTR(-ENOMEM);
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mtt->buddy = buddy;
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mtt->order = 0;
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for (i = MTHCA_MTT_SEG_SIZE / 8; i < size; i <<= 1)
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++mtt->order;
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mtt->first_seg = mthca_alloc_mtt_range(dev, mtt->order, buddy);
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if (mtt->first_seg == -1) {
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kfree(mtt);
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return ERR_PTR(-ENOMEM);
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}
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return mtt;
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}
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struct mthca_mtt *mthca_alloc_mtt(struct mthca_dev *dev, int size)
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{
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return __mthca_alloc_mtt(dev, size, &dev->mr_table.mtt_buddy);
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}
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void mthca_free_mtt(struct mthca_dev *dev, struct mthca_mtt *mtt)
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{
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if (!mtt)
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return;
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mthca_buddy_free(mtt->buddy, mtt->first_seg, mtt->order);
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mthca_table_put_range(dev, dev->mr_table.mtt_table,
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mtt->first_seg,
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mtt->first_seg + (1 << mtt->order) - 1);
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kfree(mtt);
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}
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int mthca_write_mtt(struct mthca_dev *dev, struct mthca_mtt *mtt,
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int start_index, u64 *buffer_list, int list_len)
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{
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struct mthca_mailbox *mailbox;
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__be64 *mtt_entry;
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int err = 0;
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u8 status;
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int i;
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mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
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if (IS_ERR(mailbox))
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return PTR_ERR(mailbox);
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mtt_entry = mailbox->buf;
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while (list_len > 0) {
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mtt_entry[0] = cpu_to_be64(dev->mr_table.mtt_base +
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mtt->first_seg * MTHCA_MTT_SEG_SIZE +
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start_index * 8);
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mtt_entry[1] = 0;
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for (i = 0; i < list_len && i < MTHCA_MAILBOX_SIZE / 8 - 2; ++i)
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mtt_entry[i + 2] = cpu_to_be64(buffer_list[i] |
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MTHCA_MTT_FLAG_PRESENT);
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/*
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* If we have an odd number of entries to write, add
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* one more dummy entry for firmware efficiency.
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*/
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if (i & 1)
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mtt_entry[i + 2] = 0;
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err = mthca_WRITE_MTT(dev, mailbox, (i + 1) & ~1, &status);
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if (err) {
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mthca_warn(dev, "WRITE_MTT failed (%d)\n", err);
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goto out;
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}
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if (status) {
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mthca_warn(dev, "WRITE_MTT returned status 0x%02x\n",
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status);
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err = -EINVAL;
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goto out;
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}
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list_len -= i;
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start_index += i;
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buffer_list += i;
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}
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out:
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mthca_free_mailbox(dev, mailbox);
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return err;
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}
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static inline u32 tavor_hw_index_to_key(u32 ind)
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{
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return ind;
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}
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static inline u32 tavor_key_to_hw_index(u32 key)
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{
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return key;
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}
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static inline u32 arbel_hw_index_to_key(u32 ind)
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{
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return (ind >> 24) | (ind << 8);
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}
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static inline u32 arbel_key_to_hw_index(u32 key)
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{
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return (key << 24) | (key >> 8);
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}
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static inline u32 hw_index_to_key(struct mthca_dev *dev, u32 ind)
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{
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if (mthca_is_memfree(dev))
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return arbel_hw_index_to_key(ind);
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else
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return tavor_hw_index_to_key(ind);
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}
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static inline u32 key_to_hw_index(struct mthca_dev *dev, u32 key)
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{
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if (mthca_is_memfree(dev))
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return arbel_key_to_hw_index(key);
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else
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return tavor_key_to_hw_index(key);
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}
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int mthca_mr_alloc(struct mthca_dev *dev, u32 pd, int buffer_size_shift,
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u64 iova, u64 total_size, u32 access, struct mthca_mr *mr)
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{
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struct mthca_mailbox *mailbox;
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struct mthca_mpt_entry *mpt_entry;
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u32 key;
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int i;
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int err;
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u8 status;
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might_sleep();
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WARN_ON(buffer_size_shift >= 32);
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key = mthca_alloc(&dev->mr_table.mpt_alloc);
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if (key == -1)
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return -ENOMEM;
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mr->ibmr.rkey = mr->ibmr.lkey = hw_index_to_key(dev, key);
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if (mthca_is_memfree(dev)) {
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err = mthca_table_get(dev, dev->mr_table.mpt_table, key);
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if (err)
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goto err_out_mpt_free;
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}
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mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
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if (IS_ERR(mailbox)) {
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err = PTR_ERR(mailbox);
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goto err_out_table;
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}
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mpt_entry = mailbox->buf;
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mpt_entry->flags = cpu_to_be32(MTHCA_MPT_FLAG_SW_OWNS |
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MTHCA_MPT_FLAG_MIO |
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MTHCA_MPT_FLAG_REGION |
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access);
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if (!mr->mtt)
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mpt_entry->flags |= cpu_to_be32(MTHCA_MPT_FLAG_PHYSICAL);
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mpt_entry->page_size = cpu_to_be32(buffer_size_shift - 12);
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mpt_entry->key = cpu_to_be32(key);
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mpt_entry->pd = cpu_to_be32(pd);
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mpt_entry->start = cpu_to_be64(iova);
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mpt_entry->length = cpu_to_be64(total_size);
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memset(&mpt_entry->lkey, 0,
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sizeof *mpt_entry - offsetof(struct mthca_mpt_entry, lkey));
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if (mr->mtt)
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mpt_entry->mtt_seg =
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cpu_to_be64(dev->mr_table.mtt_base +
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mr->mtt->first_seg * MTHCA_MTT_SEG_SIZE);
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if (0) {
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mthca_dbg(dev, "Dumping MPT entry %08x:\n", mr->ibmr.lkey);
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for (i = 0; i < sizeof (struct mthca_mpt_entry) / 4; ++i) {
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if (i % 4 == 0)
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printk("[%02x] ", i * 4);
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printk(" %08x", be32_to_cpu(((__be32 *) mpt_entry)[i]));
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if ((i + 1) % 4 == 0)
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printk("\n");
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}
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}
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err = mthca_SW2HW_MPT(dev, mailbox,
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key & (dev->limits.num_mpts - 1),
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&status);
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if (err) {
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mthca_warn(dev, "SW2HW_MPT failed (%d)\n", err);
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goto err_out_mailbox;
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} else if (status) {
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mthca_warn(dev, "SW2HW_MPT returned status 0x%02x\n",
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status);
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err = -EINVAL;
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goto err_out_mailbox;
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}
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mthca_free_mailbox(dev, mailbox);
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return err;
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err_out_mailbox:
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mthca_free_mailbox(dev, mailbox);
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err_out_table:
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mthca_table_put(dev, dev->mr_table.mpt_table, key);
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err_out_mpt_free:
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mthca_free(&dev->mr_table.mpt_alloc, key);
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return err;
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}
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int mthca_mr_alloc_notrans(struct mthca_dev *dev, u32 pd,
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u32 access, struct mthca_mr *mr)
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{
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mr->mtt = NULL;
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return mthca_mr_alloc(dev, pd, 12, 0, ~0ULL, access, mr);
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}
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int mthca_mr_alloc_phys(struct mthca_dev *dev, u32 pd,
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u64 *buffer_list, int buffer_size_shift,
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int list_len, u64 iova, u64 total_size,
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u32 access, struct mthca_mr *mr)
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{
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int err;
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mr->mtt = mthca_alloc_mtt(dev, list_len);
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if (IS_ERR(mr->mtt))
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return PTR_ERR(mr->mtt);
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err = mthca_write_mtt(dev, mr->mtt, 0, buffer_list, list_len);
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if (err) {
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mthca_free_mtt(dev, mr->mtt);
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return err;
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}
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err = mthca_mr_alloc(dev, pd, buffer_size_shift, iova,
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total_size, access, mr);
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if (err)
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mthca_free_mtt(dev, mr->mtt);
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return err;
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}
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/* Free mr or fmr */
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static void mthca_free_region(struct mthca_dev *dev, u32 lkey)
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{
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mthca_table_put(dev, dev->mr_table.mpt_table,
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key_to_hw_index(dev, lkey));
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mthca_free(&dev->mr_table.mpt_alloc, key_to_hw_index(dev, lkey));
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}
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void mthca_free_mr(struct mthca_dev *dev, struct mthca_mr *mr)
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{
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int err;
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u8 status;
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might_sleep();
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err = mthca_HW2SW_MPT(dev, NULL,
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key_to_hw_index(dev, mr->ibmr.lkey) &
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(dev->limits.num_mpts - 1),
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&status);
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if (err)
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mthca_warn(dev, "HW2SW_MPT failed (%d)\n", err);
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else if (status)
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mthca_warn(dev, "HW2SW_MPT returned status 0x%02x\n",
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status);
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mthca_free_region(dev, mr->ibmr.lkey);
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mthca_free_mtt(dev, mr->mtt);
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}
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int mthca_fmr_alloc(struct mthca_dev *dev, u32 pd,
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u32 access, struct mthca_fmr *mr)
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{
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struct mthca_mpt_entry *mpt_entry;
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struct mthca_mailbox *mailbox;
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u64 mtt_seg;
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u32 key, idx;
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u8 status;
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int list_len = mr->attr.max_pages;
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int err = -ENOMEM;
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int i;
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might_sleep();
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if (mr->attr.page_size < 12 || mr->attr.page_size >= 32)
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return -EINVAL;
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/* For Arbel, all MTTs must fit in the same page. */
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if (mthca_is_memfree(dev) &&
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mr->attr.max_pages * sizeof *mr->mem.arbel.mtts > PAGE_SIZE)
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return -EINVAL;
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mr->maps = 0;
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key = mthca_alloc(&dev->mr_table.mpt_alloc);
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if (key == -1)
|
|
return -ENOMEM;
|
|
|
|
idx = key & (dev->limits.num_mpts - 1);
|
|
mr->ibmr.rkey = mr->ibmr.lkey = hw_index_to_key(dev, key);
|
|
|
|
if (mthca_is_memfree(dev)) {
|
|
err = mthca_table_get(dev, dev->mr_table.mpt_table, key);
|
|
if (err)
|
|
goto err_out_mpt_free;
|
|
|
|
mr->mem.arbel.mpt = mthca_table_find(dev->mr_table.mpt_table, key);
|
|
BUG_ON(!mr->mem.arbel.mpt);
|
|
} else
|
|
mr->mem.tavor.mpt = dev->mr_table.tavor_fmr.mpt_base +
|
|
sizeof *(mr->mem.tavor.mpt) * idx;
|
|
|
|
mr->mtt = __mthca_alloc_mtt(dev, list_len, dev->mr_table.fmr_mtt_buddy);
|
|
if (IS_ERR(mr->mtt))
|
|
goto err_out_table;
|
|
|
|
mtt_seg = mr->mtt->first_seg * MTHCA_MTT_SEG_SIZE;
|
|
|
|
if (mthca_is_memfree(dev)) {
|
|
mr->mem.arbel.mtts = mthca_table_find(dev->mr_table.mtt_table,
|
|
mr->mtt->first_seg);
|
|
BUG_ON(!mr->mem.arbel.mtts);
|
|
} else
|
|
mr->mem.tavor.mtts = dev->mr_table.tavor_fmr.mtt_base + mtt_seg;
|
|
|
|
mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
|
|
if (IS_ERR(mailbox))
|
|
goto err_out_free_mtt;
|
|
|
|
mpt_entry = mailbox->buf;
|
|
|
|
mpt_entry->flags = cpu_to_be32(MTHCA_MPT_FLAG_SW_OWNS |
|
|
MTHCA_MPT_FLAG_MIO |
|
|
MTHCA_MPT_FLAG_REGION |
|
|
access);
|
|
|
|
mpt_entry->page_size = cpu_to_be32(mr->attr.page_size - 12);
|
|
mpt_entry->key = cpu_to_be32(key);
|
|
mpt_entry->pd = cpu_to_be32(pd);
|
|
memset(&mpt_entry->start, 0,
|
|
sizeof *mpt_entry - offsetof(struct mthca_mpt_entry, start));
|
|
mpt_entry->mtt_seg = cpu_to_be64(dev->mr_table.mtt_base + mtt_seg);
|
|
|
|
if (0) {
|
|
mthca_dbg(dev, "Dumping MPT entry %08x:\n", mr->ibmr.lkey);
|
|
for (i = 0; i < sizeof (struct mthca_mpt_entry) / 4; ++i) {
|
|
if (i % 4 == 0)
|
|
printk("[%02x] ", i * 4);
|
|
printk(" %08x", be32_to_cpu(((__be32 *) mpt_entry)[i]));
|
|
if ((i + 1) % 4 == 0)
|
|
printk("\n");
|
|
}
|
|
}
|
|
|
|
err = mthca_SW2HW_MPT(dev, mailbox,
|
|
key & (dev->limits.num_mpts - 1),
|
|
&status);
|
|
if (err) {
|
|
mthca_warn(dev, "SW2HW_MPT failed (%d)\n", err);
|
|
goto err_out_mailbox_free;
|
|
}
|
|
if (status) {
|
|
mthca_warn(dev, "SW2HW_MPT returned status 0x%02x\n",
|
|
status);
|
|
err = -EINVAL;
|
|
goto err_out_mailbox_free;
|
|
}
|
|
|
|
mthca_free_mailbox(dev, mailbox);
|
|
return 0;
|
|
|
|
err_out_mailbox_free:
|
|
mthca_free_mailbox(dev, mailbox);
|
|
|
|
err_out_free_mtt:
|
|
mthca_free_mtt(dev, mr->mtt);
|
|
|
|
err_out_table:
|
|
mthca_table_put(dev, dev->mr_table.mpt_table, key);
|
|
|
|
err_out_mpt_free:
|
|
mthca_free(&dev->mr_table.mpt_alloc, mr->ibmr.lkey);
|
|
return err;
|
|
}
|
|
|
|
int mthca_free_fmr(struct mthca_dev *dev, struct mthca_fmr *fmr)
|
|
{
|
|
if (fmr->maps)
|
|
return -EBUSY;
|
|
|
|
mthca_free_region(dev, fmr->ibmr.lkey);
|
|
mthca_free_mtt(dev, fmr->mtt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int mthca_check_fmr(struct mthca_fmr *fmr, u64 *page_list,
|
|
int list_len, u64 iova)
|
|
{
|
|
int i, page_mask;
|
|
|
|
if (list_len > fmr->attr.max_pages)
|
|
return -EINVAL;
|
|
|
|
page_mask = (1 << fmr->attr.page_size) - 1;
|
|
|
|
/* We are getting page lists, so va must be page aligned. */
|
|
if (iova & page_mask)
|
|
return -EINVAL;
|
|
|
|
/* Trust the user not to pass misaligned data in page_list */
|
|
if (0)
|
|
for (i = 0; i < list_len; ++i) {
|
|
if (page_list[i] & ~page_mask)
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (fmr->maps >= fmr->attr.max_maps)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int mthca_tavor_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
|
|
int list_len, u64 iova)
|
|
{
|
|
struct mthca_fmr *fmr = to_mfmr(ibfmr);
|
|
struct mthca_dev *dev = to_mdev(ibfmr->device);
|
|
struct mthca_mpt_entry mpt_entry;
|
|
u32 key;
|
|
int i, err;
|
|
|
|
err = mthca_check_fmr(fmr, page_list, list_len, iova);
|
|
if (err)
|
|
return err;
|
|
|
|
++fmr->maps;
|
|
|
|
key = tavor_key_to_hw_index(fmr->ibmr.lkey);
|
|
key += dev->limits.num_mpts;
|
|
fmr->ibmr.lkey = fmr->ibmr.rkey = tavor_hw_index_to_key(key);
|
|
|
|
writeb(MTHCA_MPT_STATUS_SW, fmr->mem.tavor.mpt);
|
|
|
|
for (i = 0; i < list_len; ++i) {
|
|
__be64 mtt_entry = cpu_to_be64(page_list[i] |
|
|
MTHCA_MTT_FLAG_PRESENT);
|
|
mthca_write64_raw(mtt_entry, fmr->mem.tavor.mtts + i);
|
|
}
|
|
|
|
mpt_entry.lkey = cpu_to_be32(key);
|
|
mpt_entry.length = cpu_to_be64(list_len * (1ull << fmr->attr.page_size));
|
|
mpt_entry.start = cpu_to_be64(iova);
|
|
|
|
__raw_writel((__force u32) mpt_entry.lkey, &fmr->mem.tavor.mpt->key);
|
|
memcpy_toio(&fmr->mem.tavor.mpt->start, &mpt_entry.start,
|
|
offsetof(struct mthca_mpt_entry, window_count) -
|
|
offsetof(struct mthca_mpt_entry, start));
|
|
|
|
writeb(MTHCA_MPT_STATUS_HW, fmr->mem.tavor.mpt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mthca_arbel_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
|
|
int list_len, u64 iova)
|
|
{
|
|
struct mthca_fmr *fmr = to_mfmr(ibfmr);
|
|
struct mthca_dev *dev = to_mdev(ibfmr->device);
|
|
u32 key;
|
|
int i, err;
|
|
|
|
err = mthca_check_fmr(fmr, page_list, list_len, iova);
|
|
if (err)
|
|
return err;
|
|
|
|
++fmr->maps;
|
|
|
|
key = arbel_key_to_hw_index(fmr->ibmr.lkey);
|
|
key += dev->limits.num_mpts;
|
|
fmr->ibmr.lkey = fmr->ibmr.rkey = arbel_hw_index_to_key(key);
|
|
|
|
*(u8 *) fmr->mem.arbel.mpt = MTHCA_MPT_STATUS_SW;
|
|
|
|
wmb();
|
|
|
|
for (i = 0; i < list_len; ++i)
|
|
fmr->mem.arbel.mtts[i] = cpu_to_be64(page_list[i] |
|
|
MTHCA_MTT_FLAG_PRESENT);
|
|
|
|
fmr->mem.arbel.mpt->key = cpu_to_be32(key);
|
|
fmr->mem.arbel.mpt->lkey = cpu_to_be32(key);
|
|
fmr->mem.arbel.mpt->length = cpu_to_be64(list_len * (1ull << fmr->attr.page_size));
|
|
fmr->mem.arbel.mpt->start = cpu_to_be64(iova);
|
|
|
|
wmb();
|
|
|
|
*(u8 *) fmr->mem.arbel.mpt = MTHCA_MPT_STATUS_HW;
|
|
|
|
wmb();
|
|
|
|
return 0;
|
|
}
|
|
|
|
void mthca_tavor_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr)
|
|
{
|
|
u32 key;
|
|
|
|
if (!fmr->maps)
|
|
return;
|
|
|
|
key = tavor_key_to_hw_index(fmr->ibmr.lkey);
|
|
key &= dev->limits.num_mpts - 1;
|
|
fmr->ibmr.lkey = fmr->ibmr.rkey = tavor_hw_index_to_key(key);
|
|
|
|
fmr->maps = 0;
|
|
|
|
writeb(MTHCA_MPT_STATUS_SW, fmr->mem.tavor.mpt);
|
|
}
|
|
|
|
void mthca_arbel_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr)
|
|
{
|
|
u32 key;
|
|
|
|
if (!fmr->maps)
|
|
return;
|
|
|
|
key = arbel_key_to_hw_index(fmr->ibmr.lkey);
|
|
key &= dev->limits.num_mpts - 1;
|
|
fmr->ibmr.lkey = fmr->ibmr.rkey = arbel_hw_index_to_key(key);
|
|
|
|
fmr->maps = 0;
|
|
|
|
*(u8 *) fmr->mem.arbel.mpt = MTHCA_MPT_STATUS_SW;
|
|
}
|
|
|
|
int __devinit mthca_init_mr_table(struct mthca_dev *dev)
|
|
{
|
|
int err, i;
|
|
|
|
err = mthca_alloc_init(&dev->mr_table.mpt_alloc,
|
|
dev->limits.num_mpts,
|
|
~0, dev->limits.reserved_mrws);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!mthca_is_memfree(dev) &&
|
|
(dev->mthca_flags & MTHCA_FLAG_DDR_HIDDEN))
|
|
dev->limits.fmr_reserved_mtts = 0;
|
|
else
|
|
dev->mthca_flags |= MTHCA_FLAG_FMR;
|
|
|
|
err = mthca_buddy_init(&dev->mr_table.mtt_buddy,
|
|
fls(dev->limits.num_mtt_segs - 1));
|
|
|
|
if (err)
|
|
goto err_mtt_buddy;
|
|
|
|
dev->mr_table.tavor_fmr.mpt_base = NULL;
|
|
dev->mr_table.tavor_fmr.mtt_base = NULL;
|
|
|
|
if (dev->limits.fmr_reserved_mtts) {
|
|
i = fls(dev->limits.fmr_reserved_mtts - 1);
|
|
|
|
if (i >= 31) {
|
|
mthca_warn(dev, "Unable to reserve 2^31 FMR MTTs.\n");
|
|
err = -EINVAL;
|
|
goto err_fmr_mpt;
|
|
}
|
|
|
|
dev->mr_table.tavor_fmr.mpt_base =
|
|
ioremap(dev->mr_table.mpt_base,
|
|
(1 << i) * sizeof (struct mthca_mpt_entry));
|
|
|
|
if (!dev->mr_table.tavor_fmr.mpt_base) {
|
|
mthca_warn(dev, "MPT ioremap for FMR failed.\n");
|
|
err = -ENOMEM;
|
|
goto err_fmr_mpt;
|
|
}
|
|
|
|
dev->mr_table.tavor_fmr.mtt_base =
|
|
ioremap(dev->mr_table.mtt_base,
|
|
(1 << i) * MTHCA_MTT_SEG_SIZE);
|
|
if (!dev->mr_table.tavor_fmr.mtt_base) {
|
|
mthca_warn(dev, "MTT ioremap for FMR failed.\n");
|
|
err = -ENOMEM;
|
|
goto err_fmr_mtt;
|
|
}
|
|
|
|
err = mthca_buddy_init(&dev->mr_table.tavor_fmr.mtt_buddy, i);
|
|
if (err)
|
|
goto err_fmr_mtt_buddy;
|
|
|
|
/* Prevent regular MRs from using FMR keys */
|
|
err = mthca_buddy_alloc(&dev->mr_table.mtt_buddy, i);
|
|
if (err)
|
|
goto err_reserve_fmr;
|
|
|
|
dev->mr_table.fmr_mtt_buddy =
|
|
&dev->mr_table.tavor_fmr.mtt_buddy;
|
|
} else
|
|
dev->mr_table.fmr_mtt_buddy = &dev->mr_table.mtt_buddy;
|
|
|
|
/* FMR table is always the first, take reserved MTTs out of there */
|
|
if (dev->limits.reserved_mtts) {
|
|
i = fls(dev->limits.reserved_mtts - 1);
|
|
|
|
if (mthca_alloc_mtt_range(dev, i,
|
|
dev->mr_table.fmr_mtt_buddy) == -1) {
|
|
mthca_warn(dev, "MTT table of order %d is too small.\n",
|
|
dev->mr_table.fmr_mtt_buddy->max_order);
|
|
err = -ENOMEM;
|
|
goto err_reserve_mtts;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_reserve_mtts:
|
|
err_reserve_fmr:
|
|
if (dev->limits.fmr_reserved_mtts)
|
|
mthca_buddy_cleanup(&dev->mr_table.tavor_fmr.mtt_buddy);
|
|
|
|
err_fmr_mtt_buddy:
|
|
if (dev->mr_table.tavor_fmr.mtt_base)
|
|
iounmap(dev->mr_table.tavor_fmr.mtt_base);
|
|
|
|
err_fmr_mtt:
|
|
if (dev->mr_table.tavor_fmr.mpt_base)
|
|
iounmap(dev->mr_table.tavor_fmr.mpt_base);
|
|
|
|
err_fmr_mpt:
|
|
mthca_buddy_cleanup(&dev->mr_table.mtt_buddy);
|
|
|
|
err_mtt_buddy:
|
|
mthca_alloc_cleanup(&dev->mr_table.mpt_alloc);
|
|
|
|
return err;
|
|
}
|
|
|
|
void __devexit mthca_cleanup_mr_table(struct mthca_dev *dev)
|
|
{
|
|
/* XXX check if any MRs are still allocated? */
|
|
if (dev->limits.fmr_reserved_mtts)
|
|
mthca_buddy_cleanup(&dev->mr_table.tavor_fmr.mtt_buddy);
|
|
|
|
mthca_buddy_cleanup(&dev->mr_table.mtt_buddy);
|
|
|
|
if (dev->mr_table.tavor_fmr.mtt_base)
|
|
iounmap(dev->mr_table.tavor_fmr.mtt_base);
|
|
if (dev->mr_table.tavor_fmr.mpt_base)
|
|
iounmap(dev->mr_table.tavor_fmr.mpt_base);
|
|
|
|
mthca_alloc_cleanup(&dev->mr_table.mpt_alloc);
|
|
}
|