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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/infiniband/hw/mthca/mthca_uar.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_uar.c')
-rw-r--r-- | drivers/infiniband/hw/mthca/mthca_uar.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_uar.c b/drivers/infiniband/hw/mthca/mthca_uar.c new file mode 100644 index 0000000000..ca5900c96f --- /dev/null +++ b/drivers/infiniband/hw/mthca/mthca_uar.c @@ -0,0 +1,78 @@ +/* + * Copyright (c) 2005 Topspin Communications. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include <asm/page.h> /* PAGE_SHIFT */ + +#include "mthca_dev.h" +#include "mthca_memfree.h" + +int mthca_uar_alloc(struct mthca_dev *dev, struct mthca_uar *uar) +{ + uar->index = mthca_alloc(&dev->uar_table.alloc); + if (uar->index == -1) + return -ENOMEM; + + uar->pfn = (pci_resource_start(dev->pdev, 2) >> PAGE_SHIFT) + uar->index; + + return 0; +} + +void mthca_uar_free(struct mthca_dev *dev, struct mthca_uar *uar) +{ + mthca_free(&dev->uar_table.alloc, uar->index); +} + +int mthca_init_uar_table(struct mthca_dev *dev) +{ + int ret; + + ret = mthca_alloc_init(&dev->uar_table.alloc, + dev->limits.num_uars, + dev->limits.num_uars - 1, + dev->limits.reserved_uars + 1); + if (ret) + return ret; + + ret = mthca_init_db_tab(dev); + if (ret) + mthca_alloc_cleanup(&dev->uar_table.alloc); + + return ret; +} + +void mthca_cleanup_uar_table(struct mthca_dev *dev) +{ + mthca_cleanup_db_tab(dev); + + /* XXX check if any UARs are still allocated? */ + mthca_alloc_cleanup(&dev->uar_table.alloc); +} |