/* * Copyright (c) 2006 Chelsio, Inc. 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/byteorder.h> #include <rdma/iw_cm.h> #include <rdma/ib_verbs.h> #include "cxio_hal.h" #include "iwch.h" #include "iwch_provider.h" int iwch_register_mem(struct iwch_dev *rhp, struct iwch_pd *php, struct iwch_mr *mhp, int shift, __be64 *page_list) { u32 stag; u32 mmid; if (cxio_register_phys_mem(&rhp->rdev, &stag, mhp->attr.pdid, mhp->attr.perms, mhp->attr.zbva, mhp->attr.va_fbo, mhp->attr.len, shift-12, page_list, &mhp->attr.pbl_size, &mhp->attr.pbl_addr)) return -ENOMEM; mhp->attr.state = 1; mhp->attr.stag = stag; mmid = stag >> 8; mhp->ibmr.rkey = mhp->ibmr.lkey = stag; insert_handle(rhp, &rhp->mmidr, mhp, mmid); PDBG("%s mmid 0x%x mhp %p\n", __func__, mmid, mhp); return 0; } int iwch_reregister_mem(struct iwch_dev *rhp, struct iwch_pd *php, struct iwch_mr *mhp, int shift, __be64 *page_list, int npages) { u32 stag; u32 mmid; /* We could support this... */ if (npages > mhp->attr.pbl_size) return -ENOMEM; stag = mhp->attr.stag; if (cxio_reregister_phys_mem(&rhp->rdev, &stag, mhp->attr.pdid, mhp->attr.perms, mhp->attr.zbva, mhp->attr.va_fbo, mhp->attr.len, shift-12, page_list, &mhp->attr.pbl_size, &mhp->attr.pbl_addr)) return -ENOMEM; mhp->attr.state = 1; mhp->attr.stag = stag; mmid = stag >> 8; mhp->ibmr.rkey = mhp->ibmr.lkey = stag; insert_handle(rhp, &rhp->mmidr, mhp, mmid); PDBG("%s mmid 0x%x mhp %p\n", __func__, mmid, mhp); return 0; } int build_phys_page_list(struct ib_phys_buf *buffer_list, int num_phys_buf, u64 *iova_start, u64 *total_size, int *npages, int *shift, __be64 **page_list) { u64 mask; int i, j, n; mask = 0; *total_size = 0; for (i = 0; i < num_phys_buf; ++i) { if (i != 0 && buffer_list[i].addr & ~PAGE_MASK) return -EINVAL; if (i != 0 && i != num_phys_buf - 1 && (buffer_list[i].size & ~PAGE_MASK)) return -EINVAL; *total_size += buffer_list[i].size; if (i > 0) mask |= buffer_list[i].addr; else mask |= buffer_list[i].addr & PAGE_MASK; if (i != num_phys_buf - 1) mask |= buffer_list[i].addr + buffer_list[i].size; else mask |= (buffer_list[i].addr + buffer_list[i].size + PAGE_SIZE - 1) & PAGE_MASK; } if (*total_size > 0xFFFFFFFFULL) return -ENOMEM; /* Find largest page shift we can use to cover buffers */ for (*shift = PAGE_SHIFT; *shift < 27; ++(*shift)) if ((1ULL << *shift) & mask) break; buffer_list[0].size += buffer_list[0].addr & ((1ULL << *shift) - 1); buffer_list[0].addr &= ~0ull << *shift; *npages = 0; for (i = 0; i < num_phys_buf; ++i) *npages += (buffer_list[i].size + (1ULL << *shift) - 1) >> *shift; if (!*npages) return -EINVAL; *page_list = kmalloc(sizeof(u64) * *npages, GFP_KERNEL); if (!*page_list) return -ENOMEM; n = 0; for (i = 0; i < num_phys_buf; ++i) for (j = 0; j < (buffer_list[i].size + (1ULL << *shift) - 1) >> *shift; ++j) (*page_list)[n++] = cpu_to_be64(buffer_list[i].addr + ((u64) j << *shift)); PDBG("%s va 0x%llx mask 0x%llx shift %d len %lld pbl_size %d\n", __func__, (unsigned long long) *iova_start, (unsigned long long) mask, *shift, (unsigned long long) *total_size, *npages); return 0; }