1 /* 2 * Copyright (c) 2004 Topspin Communications. 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 * $Id: mthca_pd.c 1349 2004-12-16 21:09:43Z roland $ 33 */ 34 35 #include <linux/init.h> 36 #include <linux/errno.h> 37 38 #include "mthca_dev.h" 39 40 int mthca_pd_alloc(struct mthca_dev *dev, struct mthca_pd *pd) 41 { 42 int err; 43 44 might_sleep(); 45 46 atomic_set(&pd->sqp_count, 0); 47 pd->pd_num = mthca_alloc(&dev->pd_table.alloc); 48 if (pd->pd_num == -1) 49 return -ENOMEM; 50 51 err = mthca_mr_alloc_notrans(dev, pd->pd_num, 52 MTHCA_MPT_FLAG_LOCAL_READ | 53 MTHCA_MPT_FLAG_LOCAL_WRITE, 54 &pd->ntmr); 55 if (err) 56 mthca_free(&dev->pd_table.alloc, pd->pd_num); 57 58 return err; 59 } 60 61 void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd) 62 { 63 might_sleep(); 64 mthca_free_mr(dev, &pd->ntmr); 65 mthca_free(&dev->pd_table.alloc, pd->pd_num); 66 } 67 68 int __devinit mthca_init_pd_table(struct mthca_dev *dev) 69 { 70 return mthca_alloc_init(&dev->pd_table.alloc, 71 dev->limits.num_pds, 72 (1 << 24) - 1, 73 dev->limits.reserved_pds); 74 } 75 76 void __devexit mthca_cleanup_pd_table(struct mthca_dev *dev) 77 { 78 /* XXX check if any PDs are still allocated? */ 79 mthca_alloc_cleanup(&dev->pd_table.alloc); 80 } 81