1 /* 2 * Copyright (c) 2004 Topspin Communications. All rights reserved. 3 * Copyright (c) 2005 Cisco Systems. All rights reserved. 4 * Copyright (c) 2005 Mellanox Technologies. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 * 34 * $Id: mthca_pd.c 1349 2004-12-16 21:09:43Z roland $ 35 */ 36 37 #include <linux/init.h> 38 #include <linux/errno.h> 39 40 #include "mthca_dev.h" 41 42 int mthca_pd_alloc(struct mthca_dev *dev, int privileged, struct mthca_pd *pd) 43 { 44 int err = 0; 45 46 pd->privileged = privileged; 47 48 atomic_set(&pd->sqp_count, 0); 49 pd->pd_num = mthca_alloc(&dev->pd_table.alloc); 50 if (pd->pd_num == -1) 51 return -ENOMEM; 52 53 if (privileged) { 54 err = mthca_mr_alloc_notrans(dev, pd->pd_num, 55 MTHCA_MPT_FLAG_LOCAL_READ | 56 MTHCA_MPT_FLAG_LOCAL_WRITE, 57 &pd->ntmr); 58 if (err) 59 mthca_free(&dev->pd_table.alloc, pd->pd_num); 60 } 61 62 return err; 63 } 64 65 void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd) 66 { 67 if (pd->privileged) 68 mthca_free_mr(dev, &pd->ntmr); 69 mthca_free(&dev->pd_table.alloc, pd->pd_num); 70 } 71 72 int __devinit mthca_init_pd_table(struct mthca_dev *dev) 73 { 74 return mthca_alloc_init(&dev->pd_table.alloc, 75 dev->limits.num_pds, 76 (1 << 24) - 1, 77 dev->limits.reserved_pds); 78 } 79 80 void mthca_cleanup_pd_table(struct mthca_dev *dev) 81 { 82 /* XXX check if any PDs are still allocated? */ 83 mthca_alloc_cleanup(&dev->pd_table.alloc); 84 } 85