1/*
  2 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
  3 *
  4 * This software is available to you under a choice of one of two
  5 * licenses.  You may choose to be licensed under the terms of the GNU
  6 * General Public License (GPL) Version 2, available from the file
  7 * COPYING in the main directory of this source tree, or the
  8 * OpenIB.org BSD license below:
  9 *
 10 *     Redistribution and use in source and binary forms, with or
 11 *     without modification, are permitted provided that the following
 12 *     conditions are met:
 13 *
 14 *      - Redistributions of source code must retain the above
 15 *        copyright notice, this list of conditions and the following
 16 *        disclaimer.
 17 *
 18 *      - Redistributions in binary form must reproduce the above
 19 *        copyright notice, this list of conditions and the following
 20 *        disclaimer in the documentation and/or other materials
 21 *        provided with the distribution.
 22 *
 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 30 * SOFTWARE.
 31 */
 32#include <linux/slab.h>
 33#include <asm/byteorder.h>
 34
 35#include <rdma/iw_cm.h>
 36#include <rdma/ib_verbs.h>
 37
 38#include "cxio_hal.h"
 39#include "cxio_resource.h"
 40#include "iwch.h"
 41#include "iwch_provider.h"
 42
 43static int iwch_finish_mem_reg(struct iwch_mr *mhp, u32 stag)
 44{
 45	u32 mmid;
 46
 47	mhp->attr.state = 1;
 48	mhp->attr.stag = stag;
 49	mmid = stag >> 8;
 50	mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
 51	pr_debug("%s mmid 0x%x mhp %p\n", __func__, mmid, mhp);
 52	return xa_insert_irq(&mhp->rhp->mrs, mmid, mhp, GFP_KERNEL);
 53}
 54
 55int iwch_register_mem(struct iwch_dev *rhp, struct iwch_pd *php,
 56		      struct iwch_mr *mhp, int shift)
 57{
 58	u32 stag;
 59	int ret;
 60
 61	if (cxio_register_phys_mem(&rhp->rdev,
 62				   &stag, mhp->attr.pdid,
 63				   mhp->attr.perms,
 64				   mhp->attr.zbva,
 65				   mhp->attr.va_fbo,
 66				   mhp->attr.len,
 67				   shift - 12,
 68				   mhp->attr.pbl_size, mhp->attr.pbl_addr))
 69		return -ENOMEM;
 70
 71	ret = iwch_finish_mem_reg(mhp, stag);
 72	if (ret)
 73		cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
 74		       mhp->attr.pbl_addr);
 75	return ret;
 76}
 77
 78int iwch_alloc_pbl(struct iwch_mr *mhp, int npages)
 79{
 80	mhp->attr.pbl_addr = cxio_hal_pblpool_alloc(&mhp->rhp->rdev,
 81						    npages << 3);
 82
 83	if (!mhp->attr.pbl_addr)
 84		return -ENOMEM;
 85
 86	mhp->attr.pbl_size = npages;
 87
 88	return 0;
 89}
 90
 91void iwch_free_pbl(struct iwch_mr *mhp)
 92{
 93	cxio_hal_pblpool_free(&mhp->rhp->rdev, mhp->attr.pbl_addr,
 94			      mhp->attr.pbl_size << 3);
 95}
 96
 97int iwch_write_pbl(struct iwch_mr *mhp, __be64 *pages, int npages, int offset)
 98{
 99	return cxio_write_pbl(&mhp->rhp->rdev, pages,
100			      mhp->attr.pbl_addr + (offset << 3), npages);
101}