1 /* 2 * Copyright (c) 2004 Topspin Communications. All rights reserved. 3 * Copyright (c) 2005 Cisco Systems. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 * 33 * $Id: mthca_pd.c 1349 2004-12-16 21:09:43Z roland $ 34 */ 35 36 #include <linux/init.h> 37 #include <linux/errno.h> 38 39 #include "mthca_dev.h" 40 41 int mthca_pd_alloc(struct mthca_dev *dev, int privileged, struct mthca_pd *pd) 42 { 43 int err = 0; 44 45 might_sleep(); 46 47 pd->privileged = privileged; 48 49 atomic_set(&pd->sqp_count, 0); 50 pd->pd_num = mthca_alloc(&dev->pd_table.alloc); 51 if (pd->pd_num == -1) 52 return -ENOMEM; 53 54 if (privileged) { 55 err = mthca_mr_alloc_notrans(dev, pd->pd_num, 56 MTHCA_MPT_FLAG_LOCAL_READ | 57 MTHCA_MPT_FLAG_LOCAL_WRITE, 58 &pd->ntmr); 59 if (err) 60 mthca_free(&dev->pd_table.alloc, pd->pd_num); 61 } 62 63 return err; 64 } 65 66 void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd) 67 { 68 might_sleep(); 69 if (pd->privileged) 70 mthca_free_mr(dev, &pd->ntmr); 71 mthca_free(&dev->pd_table.alloc, pd->pd_num); 72 } 73 74 int __devinit mthca_init_pd_table(struct mthca_dev *dev) 75 { 76 return mthca_alloc_init(&dev->pd_table.alloc, 77 dev->limits.num_pds, 78 (1 << 24) - 1, 79 dev->limits.reserved_pds); 80 } 81 82 void __devexit mthca_cleanup_pd_table(struct mthca_dev *dev) 83 { 84 /* XXX check if any PDs are still allocated? */ 85 mthca_alloc_cleanup(&dev->pd_table.alloc); 86 } 87