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139 lines
4.1 KiB
139 lines
4.1 KiB
/* |
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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 <linux/pci.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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return hns_roce_bitmap_alloc(&hr_dev->pd_bitmap, pdn) ? -ENOMEM : 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, BITMAP_NO_RR); |
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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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int hns_roce_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) |
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{ |
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struct ib_device *ib_dev = ibpd->device; |
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struct hns_roce_pd *pd = to_hr_pd(ibpd); |
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int ret; |
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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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ibdev_err(ib_dev, "failed to alloc pd, ret = %d.\n", ret); |
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return ret; |
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} |
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if (udata) { |
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struct hns_roce_ib_alloc_pd_resp resp = {.pdn = pd->pdn}; |
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ret = ib_copy_to_udata(udata, &resp, |
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min(udata->outlen, sizeof(resp))); |
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if (ret) { |
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hns_roce_pd_free(to_hr_dev(ib_dev), pd->pdn); |
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ibdev_err(ib_dev, "failed to copy to udata, ret = %d\n", ret); |
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} |
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} |
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return ret; |
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} |
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int hns_roce_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata) |
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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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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; |
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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->logic_idx); |
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if (ret) |
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return -ENOMEM; |
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if (uar->logic_idx > 0 && hr_dev->caps.phy_num_uars > 1) |
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uar->index = (uar->logic_idx - 1) % |
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(hr_dev->caps.phy_num_uars - 1) + 1; |
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else |
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uar->index = 0; |
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if (!dev_is_pci(hr_dev->dev)) { |
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res = platform_get_resource(hr_dev->pdev, IORESOURCE_MEM, 0); |
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if (!res) { |
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dev_err(&hr_dev->pdev->dev, "memory resource not found!\n"); |
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return -EINVAL; |
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} |
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uar->pfn = ((res->start) >> PAGE_SHIFT) + uar->index; |
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} else { |
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uar->pfn = ((pci_resource_start(hr_dev->pci_dev, 2)) |
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>> PAGE_SHIFT); |
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} |
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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->logic_idx, |
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BITMAP_NO_RR); |
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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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