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9a4435375c
These are the various new source code files for the Hisilicon RoCE driver for ARM architecture. Signed-off-by: Wei Hu <xavier.huwei@huawei.com> Signed-off-by: Nenglong Zhao <zhaonenglong@hisilicon.com> Signed-off-by: Lijun Ou <oulijun@huawei.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
145 lines
4.0 KiB
C
145 lines
4.0 KiB
C
/*
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* Copyright (c) 2016 Hisilicon Limited.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/platform_device.h>
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#include "hns_roce_device.h"
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static int hns_roce_pd_alloc(struct hns_roce_dev *hr_dev, unsigned long *pdn)
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{
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struct device *dev = &hr_dev->pdev->dev;
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unsigned long pd_number;
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int ret = 0;
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ret = hns_roce_bitmap_alloc(&hr_dev->pd_bitmap, &pd_number);
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if (ret == -1) {
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dev_err(dev, "alloc pdn from pdbitmap failed\n");
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return -ENOMEM;
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}
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*pdn = pd_number;
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return 0;
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}
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static void hns_roce_pd_free(struct hns_roce_dev *hr_dev, unsigned long pdn)
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{
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hns_roce_bitmap_free(&hr_dev->pd_bitmap, pdn);
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}
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int hns_roce_init_pd_table(struct hns_roce_dev *hr_dev)
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{
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return hns_roce_bitmap_init(&hr_dev->pd_bitmap, hr_dev->caps.num_pds,
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hr_dev->caps.num_pds - 1,
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hr_dev->caps.reserved_pds, 0);
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}
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void hns_roce_cleanup_pd_table(struct hns_roce_dev *hr_dev)
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{
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hns_roce_bitmap_cleanup(&hr_dev->pd_bitmap);
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}
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struct ib_pd *hns_roce_alloc_pd(struct ib_device *ib_dev,
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struct ib_ucontext *context,
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struct ib_udata *udata)
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{
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struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
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struct device *dev = &hr_dev->pdev->dev;
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struct hns_roce_pd *pd;
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int ret;
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pd = kmalloc(sizeof(*pd), GFP_KERNEL);
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if (!pd)
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return ERR_PTR(-ENOMEM);
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ret = hns_roce_pd_alloc(to_hr_dev(ib_dev), &pd->pdn);
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if (ret) {
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kfree(pd);
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dev_err(dev, "[alloc_pd]hns_roce_pd_alloc failed!\n");
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return ERR_PTR(ret);
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}
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if (context) {
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if (ib_copy_to_udata(udata, &pd->pdn, sizeof(u64))) {
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hns_roce_pd_free(to_hr_dev(ib_dev), pd->pdn);
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dev_err(dev, "[alloc_pd]ib_copy_to_udata failed!\n");
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kfree(pd);
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return ERR_PTR(-EFAULT);
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}
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}
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return &pd->ibpd;
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}
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int hns_roce_dealloc_pd(struct ib_pd *pd)
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{
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hns_roce_pd_free(to_hr_dev(pd->device), to_hr_pd(pd)->pdn);
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kfree(to_hr_pd(pd));
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return 0;
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}
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int hns_roce_uar_alloc(struct hns_roce_dev *hr_dev, struct hns_roce_uar *uar)
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{
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struct resource *res;
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int ret = 0;
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/* Using bitmap to manager UAR index */
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ret = hns_roce_bitmap_alloc(&hr_dev->uar_table.bitmap, &uar->index);
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if (ret == -1)
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return -ENOMEM;
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uar->index = (uar->index - 1) % hr_dev->caps.phy_num_uars + 1;
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res = platform_get_resource(hr_dev->pdev, IORESOURCE_MEM, 0);
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uar->pfn = ((res->start) >> PAGE_SHIFT) + uar->index;
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return 0;
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}
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void hns_roce_uar_free(struct hns_roce_dev *hr_dev, struct hns_roce_uar *uar)
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{
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hns_roce_bitmap_free(&hr_dev->uar_table.bitmap, uar->index);
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}
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int hns_roce_init_uar_table(struct hns_roce_dev *hr_dev)
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{
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return hns_roce_bitmap_init(&hr_dev->uar_table.bitmap,
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hr_dev->caps.num_uars,
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hr_dev->caps.num_uars - 1,
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hr_dev->caps.reserved_uars, 0);
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}
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void hns_roce_cleanup_uar_table(struct hns_roce_dev *hr_dev)
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{
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hns_roce_bitmap_cleanup(&hr_dev->uar_table.bitmap);
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}
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