1 /* 2 * Copyright (c) 2005 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 33 #include <asm/page.h> /* PAGE_SHIFT */ 34 35 #include "mthca_dev.h" 36 #include "mthca_memfree.h" 37 38 int mthca_uar_alloc(struct mthca_dev *dev, struct mthca_uar *uar) 39 { 40 uar->index = mthca_alloc(&dev->uar_table.alloc); 41 if (uar->index == -1) 42 return -ENOMEM; 43 44 uar->pfn = (pci_resource_start(dev->pdev, 2) >> PAGE_SHIFT) + uar->index; 45 46 return 0; 47 } 48 49 void mthca_uar_free(struct mthca_dev *dev, struct mthca_uar *uar) 50 { 51 mthca_free(&dev->uar_table.alloc, uar->index); 52 } 53 54 int mthca_init_uar_table(struct mthca_dev *dev) 55 { 56 int ret; 57 58 ret = mthca_alloc_init(&dev->uar_table.alloc, 59 dev->limits.num_uars, 60 dev->limits.num_uars - 1, 61 dev->limits.reserved_uars + 1); 62 if (ret) 63 return ret; 64 65 ret = mthca_init_db_tab(dev); 66 if (ret) 67 mthca_alloc_cleanup(&dev->uar_table.alloc); 68 69 return ret; 70 } 71 72 void mthca_cleanup_uar_table(struct mthca_dev *dev) 73 { 74 mthca_cleanup_db_tab(dev); 75 76 /* XXX check if any UARs are still allocated? */ 77 mthca_alloc_cleanup(&dev->uar_table.alloc); 78 } 79