/* * IBM eServer eHCA Infiniband device driver for Linux on POWER * * MR/MW functions * * Authors: Dietmar Decker * Christoph Raisch * * Copyright (c) 2005 IBM Corporation * * All rights reserved. * * This source code is distributed under a dual license of GPL v2.0 and OpenIB * BSD. * * OpenIB BSD License * * 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. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include #include "ehca_iverbs.h" #include "ehca_mrmw.h" #include "hcp_if.h" #include "hipz_hw.h" static struct kmem_cache *mr_cache; static struct kmem_cache *mw_cache; static struct ehca_mr *ehca_mr_new(void) { struct ehca_mr *me; me = kmem_cache_alloc(mr_cache, SLAB_KERNEL); if (me) { memset(me, 0, sizeof(struct ehca_mr)); spin_lock_init(&me->mrlock); } else ehca_gen_err("alloc failed"); return me; } static void ehca_mr_delete(struct ehca_mr *me) { kmem_cache_free(mr_cache, me); } static struct ehca_mw *ehca_mw_new(void) { struct ehca_mw *me; me = kmem_cache_alloc(mw_cache, SLAB_KERNEL); if (me) { memset(me, 0, sizeof(struct ehca_mw)); spin_lock_init(&me->mwlock); } else ehca_gen_err("alloc failed"); return me; } static void ehca_mw_delete(struct ehca_mw *me) { kmem_cache_free(mw_cache, me); } /*----------------------------------------------------------------------*/ struct ib_mr *ehca_get_dma_mr(struct ib_pd *pd, int mr_access_flags) { struct ib_mr *ib_mr; int ret; struct ehca_mr *e_maxmr; struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd); struct ehca_shca *shca = container_of(pd->device, struct ehca_shca, ib_device); if (shca->maxmr) { e_maxmr = ehca_mr_new(); if (!e_maxmr) { ehca_err(&shca->ib_device, "out of memory"); ib_mr = ERR_PTR(-ENOMEM); goto get_dma_mr_exit0; } ret = ehca_reg_maxmr(shca, e_maxmr, (u64*)KERNELBASE, mr_access_flags, e_pd, &e_maxmr->ib.ib_mr.lkey, &e_maxmr->ib.ib_mr.rkey); if (ret) { ib_mr = ERR_PTR(ret); goto get_dma_mr_exit0; } ib_mr = &e_maxmr->ib.ib_mr; } else { ehca_err(&shca->ib_device, "no internal max-MR exist!"); ib_mr = ERR_PTR(-EINVAL); goto get_dma_mr_exit0; } get_dma_mr_exit0: if (IS_ERR(ib_mr)) ehca_err(&shca->ib_device, "rc=%lx pd=%p mr_access_flags=%x ", PTR_ERR(ib_mr), pd, mr_access_flags); return ib_mr; } /* end ehca_get_dma_mr() */ /*----------------------------------------------------------------------*/ struct ib_mr *ehca_reg_phys_mr(struct ib_pd *pd, struct ib_phys_buf *phys_buf_array, int num_phys_buf, int mr_access_flags, u64 *iova_start) { struct ib_mr *ib_mr; int ret; struct ehca_mr *e_mr; struct ehca_shca *shca = container_of(pd->device, struct ehca_shca, ib_device); struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd); u64 size; struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0}; u32 num_pages_mr; u32 num_pages_4k; /* 4k portion "pages" */ if ((num_phys_buf <= 0) || !phys_buf_array) { ehca_err(pd->device, "bad input values: num_phys_buf=%x " "phys_buf_array=%p", num_phys_buf, phys_buf_array); ib_mr = ERR_PTR(-EINVAL); goto reg_phys_mr_exit0; } if (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) && !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) || ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) && !(mr_access_flags & IB_ACCESS_LOCAL_WRITE))) { /* * Remote Write Access requires Local Write Access * Remote Atomic Access requires Local Write Access */ ehca_err(pd->device, "bad input values: mr_access_flags=%x", mr_access_flags); ib_mr = ERR_PTR(-EINVAL); goto reg_phys_mr_exit0; } /* check physical buffer list and calculate size */ ret = ehca_mr_chk_buf_and_calc_size(phys_buf_array, num_phys_buf, iova_start, &size); if (ret) { ib_mr = ERR_PTR(ret); goto reg_phys_mr_exit0; } if ((size == 0) || (((u64)iova_start + size) < (u64)iova_start)) { ehca_err(pd->device, "bad input values: size=%lx iova_start=%p", size, iova_start); ib_mr = ERR_PTR(-EINVAL); goto reg_phys_mr_exit0; } e_mr = ehca_mr_new(); if (!e_mr) { ehca_err(pd->device, "out of memory"); ib_mr = ERR_PTR(-ENOMEM); goto reg_phys_mr_exit0; } /* determine number of MR pages */ num_pages_mr = ((((u64)iova_start % PAGE_SIZE) + size + PAGE_SIZE - 1) / PAGE_SIZE); num_pages_4k = ((((u64)iova_start % EHCA_PAGESIZE) + size + EHCA_PAGESIZE - 1) / EHCA_PAGESIZE); /* register MR on HCA */ if (ehca_mr_is_maxmr(size, iova_start)) { e_mr->flags |= EHCA_MR_FLAG_MAXMR; ret = ehca_reg_maxmr(shca, e_mr, iova_start, mr_access_flags, e_pd, &e_mr->ib.ib_mr.lkey, &e_mr->ib.ib_mr.rkey); if (ret) { ib_mr = ERR_PTR(ret); goto reg_phys_mr_exit1; } } else { pginfo.type = EHCA_MR_PGI_PHYS; pginfo.num_pages = num_pages_mr; pginfo.num_4k = num_pages_4k; pginfo.num_phys_buf = num_phys_buf; pginfo.phys_buf_array = phys_buf_array; pginfo.next_4k = (((u64)iova_start & ~PAGE_MASK) / EHCA_PAGESIZE); ret = ehca_reg_mr(shca, e_mr, iova_start, size, mr_access_flags, e_pd, &pginfo, &e_mr->ib.ib_mr.lkey, &e_mr->ib.ib_mr.rkey); if (ret) { ib_mr = ERR_PTR(ret); goto reg_phys_mr_exit1; } } /* successful registration of all pages */ return &e_mr->ib.ib_mr; reg_phys_mr_exit1: ehca_mr_delete(e_mr); reg_phys_mr_exit0: if (IS_ERR(ib_mr)) ehca_err(pd->device, "rc=%lx pd=%p phys_buf_array=%p " "num_phys_buf=%x mr_access_flags=%x iova_start=%p", PTR_ERR(ib_mr), pd, phys_buf_array, num_phys_buf, mr_access_flags, iova_start); return ib_mr; } /* end ehca_reg_phys_mr() */ /*----------------------------------------------------------------------*/ struct ib_mr *ehca_reg_user_mr(struct ib_pd *pd, struct ib_umem *region, int mr_access_flags, struct ib_udata *udata) { struct ib_mr *ib_mr; struct ehca_mr *e_mr; struct ehca_shca *shca = container_of(pd->device, struct ehca_shca, ib_device); struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd); struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0}; int ret; u32 num_pages_mr; u32 num_pages_4k; /* 4k portion "pages" */ if (!pd) { ehca_gen_err("bad pd=%p", pd); return ERR_PTR(-EFAULT); } if (!region) { ehca_err(pd->device, "bad input values: region=%p", region); ib_mr = ERR_PTR(-EINVAL); goto reg_user_mr_exit0; } if (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) && !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) || ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) && !(mr_access_flags & IB_ACCESS_LOCAL_WRITE))) { /* * Remote Write Access requires Local Write Access * Remote Atomic Access requires Local Write Access */ ehca_err(pd->device, "bad input values: mr_access_flags=%x", mr_access_flags); ib_mr = ERR_PTR(-EINVAL); goto reg_user_mr_exit0; } if (region->page_size != PAGE_SIZE) { ehca_err(pd->device, "page size not supported, " "region->page_size=%x", region->page_size); ib_mr = ERR_PTR(-EINVAL); goto reg_user_mr_exit0; } if ((region->length == 0) || ((region->virt_base + region->length) < region->virt_base)) { ehca_err(pd->device, "bad input values: length=%lx " "virt_base=%lx", region->length, region->virt_base); ib_mr = ERR_PTR(-EINVAL); goto reg_user_mr_exit0; } e_mr = ehca_mr_new(); if (!e_mr) { ehca_err(pd->device, "out of memory"); ib_mr = ERR_PTR(-ENOMEM); goto reg_user_mr_exit0; } /* determine number of MR pages */ num_pages_mr = (((region->virt_base % PAGE_SIZE) + region->length + PAGE_SIZE - 1) / PAGE_SIZE); num_pages_4k = (((region->virt_base % EHCA_PAGESIZE) + region->length + EHCA_PAGESIZE - 1) / EHCA_PAGESIZE); /* register MR on HCA */ pginfo.type = EHCA_MR_PGI_USER; pginfo.num_pages = num_pages_mr; pginfo.num_4k = num_pages_4k; pginfo.region = region; pginfo.next_4k = region->offset / EHCA_PAGESIZE; pginfo.next_chunk = list_prepare_entry(pginfo.next_chunk, (®ion->chunk_list), list); ret = ehca_reg_mr(shca, e_mr, (u64*)region->virt_base, region->length, mr_access_flags, e_pd, &pginfo, &e_mr->ib.ib_mr.lkey, &e_mr->ib.ib_mr.rkey); if (ret) { ib_mr = ERR_PTR(ret); goto reg_user_mr_exit1; } /* successful registration of all pages */ return &e_mr->ib.ib_mr; reg_user_mr_exit1: ehca_mr_delete(e_mr); reg_user_mr_exit0: if (IS_ERR(ib_mr)) ehca_err(pd->device, "rc=%lx pd=%p region=%p mr_access_flags=%x" " udata=%p", PTR_ERR(ib_mr), pd, region, mr_access_flags, udata); return ib_mr; } /* end ehca_reg_user_mr() */ /*----------------------------------------------------------------------*/ int ehca_rereg_phys_mr(struct ib_mr *mr, int mr_rereg_mask, struct ib_pd *pd, struct ib_phys_buf *phys_buf_array, int num_phys_buf, int mr_access_flags, u64 *iova_start) { int ret; struct ehca_shca *shca = container_of(mr->device, struct ehca_shca, ib_device); struct ehca_mr *e_mr = container_of(mr, struct ehca_mr, ib.ib_mr); struct ehca_pd *my_pd = container_of(mr->pd, struct ehca_pd, ib_pd); u64 new_size; u64 *new_start; u32 new_acl; struct ehca_pd *new_pd; u32 tmp_lkey, tmp_rkey; unsigned long sl_flags; u32 num_pages_mr = 0; u32 num_pages_4k = 0; /* 4k portion "pages" */ struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0}; u32 cur_pid = current->tgid; if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context && (my_pd->ownpid != cur_pid)) { ehca_err(mr->device, "Invalid caller pid=%x ownpid=%x", cur_pid, my_pd->ownpid); ret = -EINVAL; goto rereg_phys_mr_exit0; } if (!(mr_rereg_mask & IB_MR_REREG_TRANS)) { /* TODO not supported, because PHYP rereg hCall needs pages */ ehca_err(mr->device, "rereg without IB_MR_REREG_TRANS not " "supported yet, mr_rereg_mask=%x", mr_rereg_mask); ret = -EINVAL; goto rereg_phys_mr_exit0; } if (mr_rereg_mask & IB_MR_REREG_PD) { if (!pd) { ehca_err(mr->device, "rereg with bad pd, pd=%p " "mr_rereg_mask=%x", pd, mr_rereg_mask); ret = -EINVAL; goto rereg_phys_mr_exit0; } } if ((mr_rereg_mask & ~(IB_MR_REREG_TRANS | IB_MR_REREG_PD | IB_MR_REREG_ACCESS)) || (mr_rereg_mask == 0)) { ret = -EINVAL; goto rereg_phys_mr_exit0; } /* check other parameters */ if (e_mr == shca->maxmr) { /* should be impossible, however reject to be sure */ ehca_err(mr->device, "rereg internal max-MR impossible, mr=%p " "shca->maxmr=%p mr->lkey=%x", mr, shca->maxmr, mr->lkey); ret = -EINVAL; goto rereg_phys_mr_exit0; } if (mr_rereg_mask & IB_MR_REREG_TRANS) { /* transl., i.e. addr/size */ if (e_mr->flags & EHCA_MR_FLAG_FMR) { ehca_err(mr->device, "not supported for FMR, mr=%p " "flags=%x", mr, e_mr->flags); ret = -EINVAL; goto rereg_phys_mr_exit0; } if (!phys_buf_array || num_phys_buf <= 0) { ehca_err(mr->device, "bad input values: mr_rereg_mask=%x" " phys_buf_array=%p num_phys_buf=%x", mr_rereg_mask, phys_buf_array, num_phys_buf); ret = -EINVAL; goto rereg_phys_mr_exit0; } } if ((mr_rereg_mask & IB_MR_REREG_ACCESS) && /* change ACL */ (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) && !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) || ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) && !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)))) { /* * Remote Write Access requires Local Write Access * Remote Atomic Access requires Local Write Access */ ehca_err(mr->device, "bad input values: mr_rereg_mask=%x " "mr_access_flags=%x", mr_rereg_mask, mr_access_flags); ret = -EINVAL; goto rereg_phys_mr_exit0; } /* set requested values dependent on rereg request */ spin_lock_irqsave(&e_mr->mrlock, sl_flags); new_start = e_mr->start; /* new == old address */ new_size = e_mr->size; /* new == old length */ new_acl = e_mr->acl; /* new == old access control */ new_pd = container_of(mr->pd,struct ehca_pd,ib_pd); /*new == old PD*/ if (mr_rereg_mask & IB_MR_REREG_TRANS) { new_start = iova_start; /* change address */ /* check physical buffer list and calculate size */ ret = ehca_mr_chk_buf_and_calc_size(phys_buf_array, num_phys_buf, iova_start, &new_size); if (ret) goto rereg_phys_mr_exit1; if ((new_size == 0) || (((u64)iova_start + new_size) < (u64)iova_start)) { ehca_err(mr->device, "bad input values: new_size=%lx " "iova_start=%p", new_size, iova_start); ret = -EINVAL; goto rereg_phys_mr_exit1; } num_pages_mr = ((((u64)new_start % PAGE_SIZE) + new_size + PAGE_SIZE - 1) / PAGE_SIZE); num_pages_4k = ((((u64)new_start % EHCA_PAGESIZE) + new_size + EHCA_PAGESIZE - 1) / EHCA_PAGESIZE); pginfo.type = EHCA_MR_PGI_PHYS; pginfo.num_pages = num_pages_mr; pginfo.num_4k = num_pages_4k; pginfo.num_phys_buf = num_phys_buf; pginfo.phys_buf_array = phys_buf_array; pginfo.next_4k = (((u64)iova_start & ~PAGE_MASK) / EHCA_PAGESIZE); } if (mr_rereg_mask & IB_MR_REREG_ACCESS) new_acl = mr_access_flags; if (mr_rereg_mask & IB_MR_REREG_PD) new_pd = container_of(pd, struct ehca_pd, ib_pd); ret = ehca_rereg_mr(shca, e_mr, new_start, new_size, new_acl, new_pd, &pginfo, &tmp_lkey, &tmp_rkey); if (ret) goto rereg_phys_mr_exit1; /* successful reregistration */ if (mr_rereg_mask & IB_MR_REREG_PD) mr->pd = pd; mr->lkey = tmp_lkey; mr->rkey = tmp_rkey; rereg_phys_mr_exit1: spin_unlock_irqrestore(&e_mr->mrlock, sl_flags); rereg_phys_mr_exit0: if (ret) ehca_err(mr->device, "ret=%x mr=%p mr_rereg_mask=%x pd=%p " "phys_buf_array=%p num_phys_buf=%x mr_access_flags=%x " "iova_start=%p", ret, mr, mr_rereg_mask, pd, phys_buf_array, num_phys_buf, mr_access_flags, iova_start); return ret; } /* end ehca_rereg_phys_mr() */ /*----------------------------------------------------------------------*/ int ehca_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr) { int ret = 0; u64 h_ret; struct ehca_shca *shca = container_of(mr->device, struct ehca_shca, ib_device); struct ehca_mr *e_mr = container_of(mr, struct ehca_mr, ib.ib_mr); struct ehca_pd *my_pd = container_of(mr->pd, struct ehca_pd, ib_pd); u32 cur_pid = current->tgid; unsigned long sl_flags; struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0}; if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context && (my_pd->ownpid != cur_pid)) { ehca_err(mr->device, "Invalid caller pid=%x ownpid=%x", cur_pid, my_pd->ownpid); ret = -EINVAL; goto query_mr_exit0; } if ((e_mr->flags & EHCA_MR_FLAG_FMR)) { ehca_err(mr->device, "not supported for FMR, mr=%p e_mr=%p " "e_mr->flags=%x", mr, e_mr, e_mr->flags); ret = -EINVAL; goto query_mr_exit0; } memset(mr_attr, 0, sizeof(struct ib_mr_attr)); spin_lock_irqsave(&e_mr->mrlock, sl_flags); h_ret = hipz_h_query_mr(shca->ipz_hca_handle, e_mr, &hipzout); if (h_ret != H_SUCCESS) { ehca_err(mr->device, "hipz_mr_query failed, h_ret=%lx mr=%p " "hca_hndl=%lx mr_hndl=%lx lkey=%x", h_ret, mr, shca->ipz_hca_handle.handle, e_mr->ipz_mr_handle.handle, mr->lkey); ret = ehca_mrmw_map_hrc_query_mr(h_ret); goto query_mr_exit1; } mr_attr->pd = mr->pd; mr_attr->device_virt_addr = hipzout.vaddr; mr_attr->size = hipzout.len; mr_attr->lkey = hipzout.lkey; mr_attr->rkey = hipzout.rkey; ehca_mrmw_reverse_map_acl(&hipzout.acl, &mr_attr->mr_access_flags); query_mr_exit1: spin_unlock_irqrestore(&e_mr->mrlock, sl_flags); query_mr_exit0: if (ret) ehca_err(mr->device, "ret=%x mr=%p mr_attr=%p", ret, mr, mr_attr); return ret; } /* end ehca_query_mr() */ /*----------------------------------------------------------------------*/ int ehca_dereg_mr(struct ib_mr *mr) { int ret = 0; u64 h_ret; struct ehca_shca *shca = container_of(mr->device, struct ehca_shca, ib_device); struct ehca_mr *e_mr = container_of(mr, struct ehca_mr, ib.ib_mr); struct ehca_pd *my_pd = container_of(mr->pd, struct ehca_pd, ib_pd); u32 cur_pid = current->tgid; if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context && (my_pd->ownpid != cur_pid)) { ehca_err(mr->device, "Invalid caller pid=%x ownpid=%x", cur_pid, my_pd->ownpid); ret = -EINVAL; goto dereg_mr_exit0; } if ((e_mr->flags & EHCA_MR_FLAG_FMR)) { ehca_err(mr->device, "not supported for FMR, mr=%p e_mr=%p " "e_mr->flags=%x", mr, e_mr, e_mr->flags); ret = -EINVAL; goto dereg_mr_exit0; } else if (e_mr == shca->maxmr) { /* should be impossible, however reject to be sure */ ehca_err(mr->device, "dereg internal max-MR impossible, mr=%p " "shca->maxmr=%p mr->lkey=%x", mr, shca->maxmr, mr->lkey); ret = -EINVAL; goto dereg_mr_exit0; } /* TODO: BUSY: MR still has bound window(s) */ h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_mr); if (h_ret != H_SUCCESS) { ehca_err(mr->device, "hipz_free_mr failed, h_ret=%lx shca=%p " "e_mr=%p hca_hndl=%lx mr_hndl=%lx mr->lkey=%x", h_ret, shca, e_mr, shca->ipz_hca_handle.handle, e_mr->ipz_mr_handle.handle, mr->lkey); ret = ehca_mrmw_map_hrc_free_mr(h_ret); goto dereg_mr_exit0; } /* successful deregistration */ ehca_mr_delete(e_mr); dereg_mr_exit0: if (ret) ehca_err(mr->device, "ret=%x mr=%p", ret, mr); return ret; } /* end ehca_dereg_mr() */ /*----------------------------------------------------------------------*/ struct ib_mw *ehca_alloc_mw(struct ib_pd *pd) { struct ib_mw *ib_mw; u64 h_ret; struct ehca_mw *e_mw; struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd); struct ehca_shca *shca = container_of(pd->device, struct ehca_shca, ib_device); struct ehca_mw_hipzout_parms hipzout = {{0},0}; e_mw = ehca_mw_new(); if (!e_mw) { ib_mw = ERR_PTR(-ENOMEM); goto alloc_mw_exit0; } h_ret = hipz_h_alloc_resource_mw(shca->ipz_hca_handle, e_mw, e_pd->fw_pd, &hipzout); if (h_ret != H_SUCCESS) { ehca_err(pd->device, "hipz_mw_allocate failed, h_ret=%lx " "shca=%p hca_hndl=%lx mw=%p", h_ret, shca, shca->ipz_hca_handle.handle, e_mw); ib_mw = ERR_PTR(ehca_mrmw_map_hrc_alloc(h_ret)); goto alloc_mw_exit1; } /* successful MW allocation */ e_mw->ipz_mw_handle = hipzout.handle; e_mw->ib_mw.rkey = hipzout.rkey; return &e_mw->ib_mw; alloc_mw_exit1: ehca_mw_delete(e_mw); alloc_mw_exit0: if (IS_ERR(ib_mw)) ehca_err(pd->device, "rc=%lx pd=%p", PTR_ERR(ib_mw), pd); return ib_mw; } /* end ehca_alloc_mw() */ /*----------------------------------------------------------------------*/ int ehca_bind_mw(struct ib_qp *qp, struct ib_mw *mw, struct ib_mw_bind *mw_bind) { /* TODO: not supported up to now */ ehca_gen_err("bind MW currently not supported by HCAD"); return -EPERM; } /* end ehca_bind_mw() */ /*----------------------------------------------------------------------*/ int ehca_dealloc_mw(struct ib_mw *mw) { u64 h_ret; struct ehca_shca *shca = container_of(mw->device, struct ehca_shca, ib_device); struct ehca_mw *e_mw = container_of(mw, struct ehca_mw, ib_mw); h_ret = hipz_h_free_resource_mw(shca->ipz_hca_handle, e_mw); if (h_ret != H_SUCCESS) { ehca_err(mw->device, "hipz_free_mw failed, h_ret=%lx shca=%p " "mw=%p rkey=%x hca_hndl=%lx mw_hndl=%lx", h_ret, shca, mw, mw->rkey, shca->ipz_hca_handle.handle, e_mw->ipz_mw_handle.handle); return ehca_mrmw_map_hrc_free_mw(h_ret); } /* successful deallocation */ ehca_mw_delete(e_mw); return 0; } /* end ehca_dealloc_mw() */ /*----------------------------------------------------------------------*/ struct ib_fmr *ehca_alloc_fmr(struct ib_pd *pd, int mr_access_flags, struct ib_fmr_attr *fmr_attr) { struct ib_fmr *ib_fmr; struct ehca_shca *shca = container_of(pd->device, struct ehca_shca, ib_device); struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd); struct ehca_mr *e_fmr; int ret; u32 tmp_lkey, tmp_rkey; struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0}; /* check other parameters */ if (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) && !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) || ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) && !(mr_access_flags & IB_ACCESS_LOCAL_WRITE))) { /* * Remote Write Access requires Local Write Access * Remote Atomic Access requires Local Write Access */ ehca_err(pd->device, "bad input values: mr_access_flags=%x", mr_access_flags); ib_fmr = ERR_PTR(-EINVAL); goto alloc_fmr_exit0; } if (mr_access_flags & IB_ACCESS_MW_BIND) { ehca_err(pd->device, "bad input values: mr_access_flags=%x", mr_access_flags); ib_fmr = ERR_PTR(-EINVAL); goto alloc_fmr_exit0; } if ((fmr_attr->max_pages == 0) || (fmr_attr->max_maps == 0)) { ehca_err(pd->device, "bad input values: fmr_attr->max_pages=%x " "fmr_attr->max_maps=%x fmr_attr->page_shift=%x", fmr_attr->max_pages, fmr_attr->max_maps, fmr_attr->page_shift); ib_fmr = ERR_PTR(-EINVAL); goto alloc_fmr_exit0; } if (((1 << fmr_attr->page_shift) != EHCA_PAGESIZE) && ((1 << fmr_attr->page_shift) != PAGE_SIZE)) { ehca_err(pd->device, "unsupported fmr_attr->page_shift=%x", fmr_attr->page_shift); ib_fmr = ERR_PTR(-EINVAL); goto alloc_fmr_exit0; } e_fmr = ehca_mr_new(); if (!e_fmr) { ib_fmr = ERR_PTR(-ENOMEM); goto alloc_fmr_exit0; } e_fmr->flags |= EHCA_MR_FLAG_FMR; /* register MR on HCA */ ret = ehca_reg_mr(shca, e_fmr, NULL, fmr_attr->max_pages * (1 << fmr_attr->page_shift), mr_access_flags, e_pd, &pginfo, &tmp_lkey, &tmp_rkey); if (ret) { ib_fmr = ERR_PTR(ret); goto alloc_fmr_exit1; } /* successful */ e_fmr->fmr_page_size = 1 << fmr_attr->page_shift; e_fmr->fmr_max_pages = fmr_attr->max_pages; e_fmr->fmr_max_maps = fmr_attr->max_maps; e_fmr->fmr_map_cnt = 0; return &e_fmr->ib.ib_fmr; alloc_fmr_exit1: ehca_mr_delete(e_fmr); alloc_fmr_exit0: if (IS_ERR(ib_fmr)) ehca_err(pd->device, "rc=%lx pd=%p mr_access_flags=%x " "fmr_attr=%p", PTR_ERR(ib_fmr), pd, mr_access_flags, fmr_attr); return ib_fmr; } /* end ehca_alloc_fmr() */ /*----------------------------------------------------------------------*/ int ehca_map_phys_fmr(struct ib_fmr *fmr, u64 *page_list, int list_len, u64 iova) { int ret; struct ehca_shca *shca = container_of(fmr->device, struct ehca_shca, ib_device); struct ehca_mr *e_fmr = container_of(fmr, struct ehca_mr, ib.ib_fmr); struct ehca_pd *e_pd = container_of(fmr->pd, struct ehca_pd, ib_pd); struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0}; u32 tmp_lkey, tmp_rkey; if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) { ehca_err(fmr->device, "not a FMR, e_fmr=%p e_fmr->flags=%x", e_fmr, e_fmr->flags); ret = -EINVAL; goto map_phys_fmr_exit0; } ret = ehca_fmr_check_page_list(e_fmr, page_list, list_len); if (ret) goto map_phys_fmr_exit0; if (iova % e_fmr->fmr_page_size) { /* only whole-numbered pages */ ehca_err(fmr->device, "bad iova, iova=%lx fmr_page_size=%x", iova, e_fmr->fmr_page_size); ret = -EINVAL; goto map_phys_fmr_exit0; } if (e_fmr->fmr_map_cnt >= e_fmr->fmr_max_maps) { /* HCAD does not limit the maps, however trace this anyway */ ehca_info(fmr->device, "map limit exceeded, fmr=%p " "e_fmr->fmr_map_cnt=%x e_fmr->fmr_max_maps=%x", fmr, e_fmr->fmr_map_cnt, e_fmr->fmr_max_maps); } pginfo.type = EHCA_MR_PGI_FMR; pginfo.num_pages = list_len; pginfo.num_4k = list_len * (e_fmr->fmr_page_size / EHCA_PAGESIZE); pginfo.page_list = page_list; pginfo.next_4k = ((iova & (e_fmr->fmr_page_size-1)) / EHCA_PAGESIZE); ret = ehca_rereg_mr(shca, e_fmr, (u64*)iova, list_len * e_fmr->fmr_page_size, e_fmr->acl, e_pd, &pginfo, &tmp_lkey, &tmp_rkey); if (ret) goto map_phys_fmr_exit0; /* successful reregistration */ e_fmr->fmr_map_cnt++; e_fmr->ib.ib_fmr.lkey = tmp_lkey; e_fmr->ib.ib_fmr.rkey = tmp_rkey; return 0; map_phys_fmr_exit0: if (ret) ehca_err(fmr->device, "ret=%x fmr=%p page_list=%p list_len=%x " "iova=%lx", ret, fmr, page_list, list_len, iova); return ret; } /* end ehca_map_phys_fmr() */ /*----------------------------------------------------------------------*/ int ehca_unmap_fmr(struct list_head *fmr_list) { int ret = 0; struct ib_fmr *ib_fmr; struct ehca_shca *shca = NULL; struct ehca_shca *prev_shca; struct ehca_mr *e_fmr; u32 num_fmr = 0; u32 unmap_fmr_cnt = 0; /* check all FMR belong to same SHCA, and check internal flag */ list_for_each_entry(ib_fmr, fmr_list, list) { prev_shca = shca; if (!ib_fmr) { ehca_gen_err("bad fmr=%p in list", ib_fmr); ret = -EINVAL; goto unmap_fmr_exit0; } shca = container_of(ib_fmr->device, struct ehca_shca, ib_device); e_fmr = container_of(ib_fmr, struct ehca_mr, ib.ib_fmr); if ((shca != prev_shca) && prev_shca) { ehca_err(&shca->ib_device, "SHCA mismatch, shca=%p " "prev_shca=%p e_fmr=%p", shca, prev_shca, e_fmr); ret = -EINVAL; goto unmap_fmr_exit0; } if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) { ehca_err(&shca->ib_device, "not a FMR, e_fmr=%p " "e_fmr->flags=%x", e_fmr, e_fmr->flags); ret = -EINVAL; goto unmap_fmr_exit0; } num_fmr++; } /* loop over all FMRs to unmap */ list_for_each_entry(ib_fmr, fmr_list, list) { unmap_fmr_cnt++; e_fmr = container_of(ib_fmr, struct ehca_mr, ib.ib_fmr); shca = container_of(ib_fmr->device, struct ehca_shca, ib_device); ret = ehca_unmap_one_fmr(shca, e_fmr); if (ret) { /* unmap failed, stop unmapping of rest of FMRs */ ehca_err(&shca->ib_device, "unmap of one FMR failed, " "stop rest, e_fmr=%p num_fmr=%x " "unmap_fmr_cnt=%x lkey=%x", e_fmr, num_fmr, unmap_fmr_cnt, e_fmr->ib.ib_fmr.lkey); goto unmap_fmr_exit0; } } unmap_fmr_exit0: if (ret) ehca_gen_err("ret=%x fmr_list=%p num_fmr=%x unmap_fmr_cnt=%x", ret, fmr_list, num_fmr, unmap_fmr_cnt); return ret; } /* end ehca_unmap_fmr() */ /*----------------------------------------------------------------------*/ int ehca_dealloc_fmr(struct ib_fmr *fmr) { int ret; u64 h_ret; struct ehca_shca *shca = container_of(fmr->device, struct ehca_shca, ib_device); struct ehca_mr *e_fmr = container_of(fmr, struct ehca_mr, ib.ib_fmr); if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) { ehca_err(fmr->device, "not a FMR, e_fmr=%p e_fmr->flags=%x", e_fmr, e_fmr->flags); ret = -EINVAL; goto free_fmr_exit0; } h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_fmr); if (h_ret != H_SUCCESS) { ehca_err(fmr->device, "hipz_free_mr failed, h_ret=%lx e_fmr=%p " "hca_hndl=%lx fmr_hndl=%lx fmr->lkey=%x", h_ret, e_fmr, shca->ipz_hca_handle.handle, e_fmr->ipz_mr_handle.handle, fmr->lkey); ret = ehca_mrmw_map_hrc_free_mr(h_ret); goto free_fmr_exit0; } /* successful deregistration */ ehca_mr_delete(e_fmr); return 0; free_fmr_exit0: if (ret) ehca_err(&shca->ib_device, "ret=%x fmr=%p", ret, fmr); return ret; } /* end ehca_dealloc_fmr() */ /*----------------------------------------------------------------------*/ int ehca_reg_mr(struct ehca_shca *shca, struct ehca_mr *e_mr, u64 *iova_start, u64 size, int acl, struct ehca_pd *e_pd, struct ehca_mr_pginfo *pginfo, u32 *lkey, /*OUT*/ u32 *rkey) /*OUT*/ { int ret; u64 h_ret; u32 hipz_acl; struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0}; ehca_mrmw_map_acl(acl, &hipz_acl); ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl); if (ehca_use_hp_mr == 1) hipz_acl |= 0x00000001; h_ret = hipz_h_alloc_resource_mr(shca->ipz_hca_handle, e_mr, (u64)iova_start, size, hipz_acl, e_pd->fw_pd, &hipzout); if (h_ret != H_SUCCESS) { ehca_err(&shca->ib_device, "hipz_alloc_mr failed, h_ret=%lx " "hca_hndl=%lx", h_ret, shca->ipz_hca_handle.handle); ret = ehca_mrmw_map_hrc_alloc(h_ret); goto ehca_reg_mr_exit0; } e_mr->ipz_mr_handle = hipzout.handle; ret = ehca_reg_mr_rpages(shca, e_mr, pginfo); if (ret) goto ehca_reg_mr_exit1; /* successful registration */ e_mr->num_pages = pginfo->num_pages; e_mr->num_4k = pginfo->num_4k; e_mr->start = iova_start; e_mr->size = size; e_mr->acl = acl; *lkey = hipzout.lkey; *rkey = hipzout.rkey; return 0; ehca_reg_mr_exit1: h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_mr); if (h_ret != H_SUCCESS) { ehca_err(&shca->ib_device, "h_ret=%lx shca=%p e_mr=%p " "iova_start=%p size=%lx acl=%x e_pd=%p lkey=%x " "pginfo=%p num_pages=%lx num_4k=%lx ret=%x", h_ret, shca, e_mr, iova_start, size, acl, e_pd, hipzout.lkey, pginfo, pginfo->num_pages, pginfo->num_4k, ret); ehca_err(&shca->ib_device, "internal error in ehca_reg_mr, " "not recoverable"); } ehca_reg_mr_exit0: if (ret) ehca_err(&shca->ib_device, "ret=%x shca=%p e_mr=%p " "iova_start=%p size=%lx acl=%x e_pd=%p pginfo=%p " "num_pages=%lx num_4k=%lx", ret, shca, e_mr, iova_start, size, acl, e_pd, pginfo, pginfo->num_pages, pginfo->num_4k); return ret; } /* end ehca_reg_mr() */ /*----------------------------------------------------------------------*/ int ehca_reg_mr_rpages(struct ehca_shca *shca, struct ehca_mr *e_mr, struct ehca_mr_pginfo *pginfo) { int ret = 0; u64 h_ret; u32 rnum; u64 rpage; u32 i; u64 *kpage; kpage = ehca_alloc_fw_ctrlblock(); if (!kpage) { ehca_err(&shca->ib_device, "kpage alloc failed"); ret = -ENOMEM; goto ehca_reg_mr_rpages_exit0; } /* max 512 pages per shot */ for (i = 0; i < ((pginfo->num_4k + 512 - 1) / 512); i++) { if (i == ((pginfo->num_4k + 512 - 1) / 512) - 1) { rnum = pginfo->num_4k % 512; /* last shot */ if (rnum == 0) rnum = 512; /* last shot is full */ } else rnum = 512; if (rnum > 1) { ret = ehca_set_pagebuf(e_mr, pginfo, rnum, kpage); if (ret) { ehca_err(&shca->ib_device, "ehca_set_pagebuf " "bad rc, ret=%x rnum=%x kpage=%p", ret, rnum, kpage); ret = -EFAULT; goto ehca_reg_mr_rpages_exit1; } rpage = virt_to_abs(kpage); if (!rpage) { ehca_err(&shca->ib_device, "kpage=%p i=%x", kpage, i); ret = -EFAULT; goto ehca_reg_mr_rpages_exit1; } } else { /* rnum==1 */ ret = ehca_set_pagebuf_1(e_mr, pginfo, &rpage); if (ret) { ehca_err(&shca->ib_device, "ehca_set_pagebuf_1 " "bad rc, ret=%x i=%x", ret, i); ret = -EFAULT; goto ehca_reg_mr_rpages_exit1; } } h_ret = hipz_h_register_rpage_mr(shca->ipz_hca_handle, e_mr, 0, /* pagesize 4k */ 0, rpage, rnum); if (i == ((pginfo->num_4k + 512 - 1) / 512) - 1) { /* * check for 'registration complete'==H_SUCCESS * and for 'page registered'==H_PAGE_REGISTERED */ if (h_ret != H_SUCCESS) { ehca_err(&shca->ib_device, "last " "hipz_reg_rpage_mr failed, h_ret=%lx " "e_mr=%p i=%x hca_hndl=%lx mr_hndl=%lx" " lkey=%x", h_ret, e_mr, i, shca->ipz_hca_handle.handle, e_mr->ipz_mr_handle.handle, e_mr->ib.ib_mr.lkey); ret = ehca_mrmw_map_hrc_rrpg_last(h_ret); break; } else ret = 0; } else if (h_ret != H_PAGE_REGISTERED) { ehca_err(&shca->ib_device, "hipz_reg_rpage_mr failed, " "h_ret=%lx e_mr=%p i=%x lkey=%x hca_hndl=%lx " "mr_hndl=%lx", h_ret, e_mr, i, e_mr->ib.ib_mr.lkey, shca->ipz_hca_handle.handle, e_mr->ipz_mr_handle.handle); ret = ehca_mrmw_map_hrc_rrpg_notlast(h_ret); break; } else ret = 0; } /* end for(i) */ ehca_reg_mr_rpages_exit1: ehca_free_fw_ctrlblock(kpage); ehca_reg_mr_rpages_exit0: if (ret) ehca_err(&shca->ib_device, "ret=%x shca=%p e_mr=%p pginfo=%p " "num_pages=%lx num_4k=%lx", ret, shca, e_mr, pginfo, pginfo->num_pages, pginfo->num_4k); return ret; } /* end ehca_reg_mr_rpages() */ /*----------------------------------------------------------------------*/ inline int ehca_rereg_mr_rereg1(struct ehca_shca *shca, struct ehca_mr *e_mr, u64 *iova_start, u64 size, u32 acl, struct ehca_pd *e_pd, struct ehca_mr_pginfo *pginfo, u32 *lkey, /*OUT*/ u32 *rkey) /*OUT*/ { int ret; u64 h_ret; u32 hipz_acl; u64 *kpage; u64 rpage; struct ehca_mr_pginfo pginfo_save; struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0}; ehca_mrmw_map_acl(acl, &hipz_acl); ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl); kpage = ehca_alloc_fw_ctrlblock(); if (!kpage) { ehca_err(&shca->ib_device, "kpage alloc failed"); ret = -ENOMEM; goto ehca_rereg_mr_rereg1_exit0; } pginfo_save = *pginfo; ret = ehca_set_pagebuf(e_mr, pginfo, pginfo->num_4k, kpage); if (ret) { ehca_err(&shca->ib_device, "set pagebuf failed, e_mr=%p " "pginfo=%p type=%x num_pages=%lx num_4k=%lx kpage=%p", e_mr, pginfo, pginfo->type, pginfo->num_pages, pginfo->num_4k,kpage); goto ehca_rereg_mr_rereg1_exit1; } rpage = virt_to_abs(kpage); if (!rpage) { ehca_err(&shca->ib_device, "kpage=%p", kpage); ret = -EFAULT; goto ehca_rereg_mr_rereg1_exit1; } h_ret = hipz_h_reregister_pmr(shca->ipz_hca_handle, e_mr, (u64)iova_start, size, hipz_acl, e_pd->fw_pd, rpage, &hipzout); if (h_ret != H_SUCCESS) { /* * reregistration unsuccessful, try it again with the 3 hCalls, * e.g. this is required in case H_MR_CONDITION * (MW bound or MR is shared) */ ehca_warn(&shca->ib_device, "hipz_h_reregister_pmr failed " "(Rereg1), h_ret=%lx e_mr=%p", h_ret, e_mr); *pginfo = pginfo_save; ret = -EAGAIN; } else if ((u64*)hipzout.vaddr != iova_start) { ehca_err(&shca->ib_device, "PHYP changed iova_start in " "rereg_pmr, iova_start=%p iova_start_out=%lx e_mr=%p " "mr_handle=%lx lkey=%x lkey_out=%x", iova_start, hipzout.vaddr, e_mr, e_mr->ipz_mr_handle.handle, e_mr->ib.ib_mr.lkey, hipzout.lkey); ret = -EFAULT; } else { /* * successful reregistration * note: start and start_out are identical for eServer HCAs */ e_mr->num_pages = pginfo->num_pages; e_mr->num_4k = pginfo->num_4k; e_mr->start = iova_start; e_mr->size = size; e_mr->acl = acl; *lkey = hipzout.lkey; *rkey = hipzout.rkey; } ehca_rereg_mr_rereg1_exit1: ehca_free_fw_ctrlblock(kpage); ehca_rereg_mr_rereg1_exit0: if ( ret && (ret != -EAGAIN) ) ehca_err(&shca->ib_device, "ret=%x lkey=%x rkey=%x " "pginfo=%p num_pages=%lx num_4k=%lx", ret, *lkey, *rkey, pginfo, pginfo->num_pages, pginfo->num_4k); return ret; } /* end ehca_rereg_mr_rereg1() */ /*----------------------------------------------------------------------*/ int ehca_rereg_mr(struct ehca_shca *shca, struct ehca_mr *e_mr, u64 *iova_start, u64 size, int acl, struct ehca_pd *e_pd, struct ehca_mr_pginfo *pginfo, u32 *lkey, u32 *rkey) { int ret = 0; u64 h_ret; int rereg_1_hcall = 1; /* 1: use hipz_h_reregister_pmr directly */ int rereg_3_hcall = 0; /* 1: use 3 hipz calls for reregistration */ /* first determine reregistration hCall(s) */ if ((pginfo->num_4k > 512) || (e_mr->num_4k > 512) || (pginfo->num_4k > e_mr->num_4k)) { ehca_dbg(&shca->ib_device, "Rereg3 case, pginfo->num_4k=%lx " "e_mr->num_4k=%x", pginfo->num_4k, e_mr->num_4k); rereg_1_hcall = 0; rereg_3_hcall = 1; } if (e_mr->flags & EHCA_MR_FLAG_MAXMR) { /* check for max-MR */ rereg_1_hcall = 0; rereg_3_hcall = 1; e_mr->flags &= ~EHCA_MR_FLAG_MAXMR; ehca_err(&shca->ib_device, "Rereg MR for max-MR! e_mr=%p", e_mr); } if (rereg_1_hcall) { ret = ehca_rereg_mr_rereg1(shca, e_mr, iova_start, size, acl, e_pd, pginfo, lkey, rkey); if (ret) { if (ret == -EAGAIN) rereg_3_hcall = 1; else goto ehca_rereg_mr_exit0; } } if (rereg_3_hcall) { struct ehca_mr save_mr; /* first deregister old MR */ h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_mr); if (h_ret != H_SUCCESS) { ehca_err(&shca->ib_device, "hipz_free_mr failed, " "h_ret=%lx e_mr=%p hca_hndl=%lx mr_hndl=%lx " "mr->lkey=%x", h_ret, e_mr, shca->ipz_hca_handle.handle, e_mr->ipz_mr_handle.handle, e_mr->ib.ib_mr.lkey); ret = ehca_mrmw_map_hrc_free_mr(h_ret); goto ehca_rereg_mr_exit0; } /* clean ehca_mr_t, without changing struct ib_mr and lock */ save_mr = *e_mr; ehca_mr_deletenew(e_mr); /* set some MR values */ e_mr->flags = save_mr.flags; e_mr->fmr_page_size = save_mr.fmr_page_size; e_mr->fmr_max_pages = save_mr.fmr_max_pages; e_mr->fmr_max_maps = save_mr.fmr_max_maps; e_mr->fmr_map_cnt = save_mr.fmr_map_cnt; ret = ehca_reg_mr(shca, e_mr, iova_start, size, acl, e_pd, pginfo, lkey, rkey); if (ret) { u32 offset = (u64)(&e_mr->flags) - (u64)e_mr; memcpy(&e_mr->flags, &(save_mr.flags), sizeof(struct ehca_mr) - offset); goto ehca_rereg_mr_exit0; } } ehca_rereg_mr_exit0: if (ret) ehca_err(&shca->ib_device, "ret=%x shca=%p e_mr=%p " "iova_start=%p size=%lx acl=%x e_pd=%p pginfo=%p " "num_pages=%lx lkey=%x rkey=%x rereg_1_hcall=%x " "rereg_3_hcall=%x", ret, shca, e_mr, iova_start, size, acl, e_pd, pginfo, pginfo->num_pages, *lkey, *rkey, rereg_1_hcall, rereg_3_hcall); return ret; } /* end ehca_rereg_mr() */ /*----------------------------------------------------------------------*/ int ehca_unmap_one_fmr(struct ehca_shca *shca, struct ehca_mr *e_fmr) { int ret = 0; u64 h_ret; int rereg_1_hcall = 1; /* 1: use hipz_mr_reregister directly */ int rereg_3_hcall = 0; /* 1: use 3 hipz calls for unmapping */ struct ehca_pd *e_pd = container_of(e_fmr->ib.ib_fmr.pd, struct ehca_pd, ib_pd); struct ehca_mr save_fmr; u32 tmp_lkey, tmp_rkey; struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0}; struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0}; /* first check if reregistration hCall can be used for unmap */ if (e_fmr->fmr_max_pages > 512) { rereg_1_hcall = 0; rereg_3_hcall = 1; } if (rereg_1_hcall) { /* * note: after using rereg hcall with len=0, * rereg hcall must be used again for registering pages */ h_ret = hipz_h_reregister_pmr(shca->ipz_hca_handle, e_fmr, 0, 0, 0, e_pd->fw_pd, 0, &hipzout); if (h_ret != H_SUCCESS) { /* * should not happen, because length checked above, * FMRs are not shared and no MW bound to FMRs */ ehca_err(&shca->ib_device, "hipz_reregister_pmr failed " "(Rereg1), h_ret=%lx e_fmr=%p hca_hndl=%lx " "mr_hndl=%lx lkey=%x lkey_out=%x", h_ret, e_fmr, shca->ipz_hca_handle.handle, e_fmr->ipz_mr_handle.handle, e_fmr->ib.ib_fmr.lkey, hipzout.lkey); rereg_3_hcall = 1; } else { /* successful reregistration */ e_fmr->start = NULL; e_fmr->size = 0; tmp_lkey = hipzout.lkey; tmp_rkey = hipzout.rkey; } } if (rereg_3_hcall) { struct ehca_mr save_mr; /* first free old FMR */ h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_fmr); if (h_ret != H_SUCCESS) { ehca_err(&shca->ib_device, "hipz_free_mr failed, " "h_ret=%lx e_fmr=%p hca_hndl=%lx mr_hndl=%lx " "lkey=%x", h_ret, e_fmr, shca->ipz_hca_handle.handle, e_fmr->ipz_mr_handle.handle, e_fmr->ib.ib_fmr.lkey); ret = ehca_mrmw_map_hrc_free_mr(h_ret); goto ehca_unmap_one_fmr_exit0; } /* clean ehca_mr_t, without changing lock */ save_fmr = *e_fmr; ehca_mr_deletenew(e_fmr); /* set some MR values */ e_fmr->flags = save_fmr.flags; e_fmr->fmr_page_size = save_fmr.fmr_page_size; e_fmr->fmr_max_pages = save_fmr.fmr_max_pages; e_fmr->fmr_max_maps = save_fmr.fmr_max_maps; e_fmr->fmr_map_cnt = save_fmr.fmr_map_cnt; e_fmr->acl = save_fmr.acl; pginfo.type = EHCA_MR_PGI_FMR; pginfo.num_pages = 0; pginfo.num_4k = 0; ret = ehca_reg_mr(shca, e_fmr, NULL, (e_fmr->fmr_max_pages * e_fmr->fmr_page_size), e_fmr->acl, e_pd, &pginfo, &tmp_lkey, &tmp_rkey); if (ret) { u32 offset = (u64)(&e_fmr->flags) - (u64)e_fmr; memcpy(&e_fmr->flags, &(save_mr.flags), sizeof(struct ehca_mr) - offset); goto ehca_unmap_one_fmr_exit0; } } ehca_unmap_one_fmr_exit0: if (ret) ehca_err(&shca->ib_device, "ret=%x tmp_lkey=%x tmp_rkey=%x " "fmr_max_pages=%x rereg_1_hcall=%x rereg_3_hcall=%x", ret, tmp_lkey, tmp_rkey, e_fmr->fmr_max_pages, rereg_1_hcall, rereg_3_hcall); return ret; } /* end ehca_unmap_one_fmr() */ /*----------------------------------------------------------------------*/ int ehca_reg_smr(struct ehca_shca *shca, struct ehca_mr *e_origmr, struct ehca_mr *e_newmr, u64 *iova_start, int acl, struct ehca_pd *e_pd, u32 *lkey, /*OUT*/ u32 *rkey) /*OUT*/ { int ret = 0; u64 h_ret; u32 hipz_acl; struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0}; ehca_mrmw_map_acl(acl, &hipz_acl); ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl); h_ret = hipz_h_register_smr(shca->ipz_hca_handle, e_newmr, e_origmr, (u64)iova_start, hipz_acl, e_pd->fw_pd, &hipzout); if (h_ret != H_SUCCESS) { ehca_err(&shca->ib_device, "hipz_reg_smr failed, h_ret=%lx " "shca=%p e_origmr=%p e_newmr=%p iova_start=%p acl=%x " "e_pd=%p hca_hndl=%lx mr_hndl=%lx lkey=%x", h_ret, shca, e_origmr, e_newmr, iova_start, acl, e_pd, shca->ipz_hca_handle.handle, e_origmr->ipz_mr_handle.handle, e_origmr->ib.ib_mr.lkey); ret = ehca_mrmw_map_hrc_reg_smr(h_ret); goto ehca_reg_smr_exit0; } /* successful registration */ e_newmr->num_pages = e_origmr->num_pages; e_newmr->num_4k = e_origmr->num_4k; e_newmr->start = iova_start; e_newmr->size = e_origmr->size; e_newmr->acl = acl; e_newmr->ipz_mr_handle = hipzout.handle; *lkey = hipzout.lkey; *rkey = hipzout.rkey; return 0; ehca_reg_smr_exit0: if (ret) ehca_err(&shca->ib_device, "ret=%x shca=%p e_origmr=%p " "e_newmr=%p iova_start=%p acl=%x e_pd=%p", ret, shca, e_origmr, e_newmr, iova_start, acl, e_pd); return ret; } /* end ehca_reg_smr() */ /*----------------------------------------------------------------------*/ /* register internal max-MR to internal SHCA */ int ehca_reg_internal_maxmr( struct ehca_shca *shca, struct ehca_pd *e_pd, struct ehca_mr **e_maxmr) /*OUT*/ { int ret; struct ehca_mr *e_mr; u64 *iova_start; u64 size_maxmr; struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0}; struct ib_phys_buf ib_pbuf; u32 num_pages_mr; u32 num_pages_4k; /* 4k portion "pages" */ e_mr = ehca_mr_new(); if (!e_mr) { ehca_err(&shca->ib_device, "out of memory"); ret = -ENOMEM; goto ehca_reg_internal_maxmr_exit0; } e_mr->flags |= EHCA_MR_FLAG_MAXMR; /* register internal max-MR on HCA */ size_maxmr = (u64)high_memory - PAGE_OFFSET; iova_start = (u64*)KERNELBASE; ib_pbuf.addr = 0; ib_pbuf.size = size_maxmr; num_pages_mr = ((((u64)iova_start % PAGE_SIZE) + size_maxmr + PAGE_SIZE - 1) / PAGE_SIZE); num_pages_4k = ((((u64)iova_start % EHCA_PAGESIZE) + size_maxmr + EHCA_PAGESIZE - 1) / EHCA_PAGESIZE); pginfo.type = EHCA_MR_PGI_PHYS; pginfo.num_pages = num_pages_mr; pginfo.num_4k = num_pages_4k; pginfo.num_phys_buf = 1; pginfo.phys_buf_array = &ib_pbuf; ret = ehca_reg_mr(shca, e_mr, iova_start, size_maxmr, 0, e_pd, &pginfo, &e_mr->ib.ib_mr.lkey, &e_mr->ib.ib_mr.rkey); if (ret) { ehca_err(&shca->ib_device, "reg of internal max MR failed, " "e_mr=%p iova_start=%p size_maxmr=%lx num_pages_mr=%x " "num_pages_4k=%x", e_mr, iova_start, size_maxmr, num_pages_mr, num_pages_4k); goto ehca_reg_internal_maxmr_exit1; } /* successful registration of all pages */ e_mr->ib.ib_mr.device = e_pd->ib_pd.device; e_mr->ib.ib_mr.pd = &e_pd->ib_pd; e_mr->ib.ib_mr.uobject = NULL; atomic_inc(&(e_pd->ib_pd.usecnt)); atomic_set(&(e_mr->ib.ib_mr.usecnt), 0); *e_maxmr = e_mr; return 0; ehca_reg_internal_maxmr_exit1: ehca_mr_delete(e_mr); ehca_reg_internal_maxmr_exit0: if (ret) ehca_err(&shca->ib_device, "ret=%x shca=%p e_pd=%p e_maxmr=%p", ret, shca, e_pd, e_maxmr); return ret; } /* end ehca_reg_internal_maxmr() */ /*----------------------------------------------------------------------*/ int ehca_reg_maxmr(struct ehca_shca *shca, struct ehca_mr *e_newmr, u64 *iova_start, int acl, struct ehca_pd *e_pd, u32 *lkey, u32 *rkey) { u64 h_ret; struct ehca_mr *e_origmr = shca->maxmr; u32 hipz_acl; struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0}; ehca_mrmw_map_acl(acl, &hipz_acl); ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl); h_ret = hipz_h_register_smr(shca->ipz_hca_handle, e_newmr, e_origmr, (u64)iova_start, hipz_acl, e_pd->fw_pd, &hipzout); if (h_ret != H_SUCCESS) { ehca_err(&shca->ib_device, "hipz_reg_smr failed, h_ret=%lx " "e_origmr=%p hca_hndl=%lx mr_hndl=%lx lkey=%x", h_ret, e_origmr, shca->ipz_hca_handle.handle, e_origmr->ipz_mr_handle.handle, e_origmr->ib.ib_mr.lkey); return ehca_mrmw_map_hrc_reg_smr(h_ret); } /* successful registration */ e_newmr->num_pages = e_origmr->num_pages; e_newmr->num_4k = e_origmr->num_4k; e_newmr->start = iova_start; e_newmr->size = e_origmr->size; e_newmr->acl = acl; e_newmr->ipz_mr_handle = hipzout.handle; *lkey = hipzout.lkey; *rkey = hipzout.rkey; return 0; } /* end ehca_reg_maxmr() */ /*----------------------------------------------------------------------*/ int ehca_dereg_internal_maxmr(struct ehca_shca *shca) { int ret; struct ehca_mr *e_maxmr; struct ib_pd *ib_pd; if (!shca->maxmr) { ehca_err(&shca->ib_device, "bad call, shca=%p", shca); ret = -EINVAL; goto ehca_dereg_internal_maxmr_exit0; } e_maxmr = shca->maxmr; ib_pd = e_maxmr->ib.ib_mr.pd; shca->maxmr = NULL; /* remove internal max-MR indication from SHCA */ ret = ehca_dereg_mr(&e_maxmr->ib.ib_mr); if (ret) { ehca_err(&shca->ib_device, "dereg internal max-MR failed, " "ret=%x e_maxmr=%p shca=%p lkey=%x", ret, e_maxmr, shca, e_maxmr->ib.ib_mr.lkey); shca->maxmr = e_maxmr; goto ehca_dereg_internal_maxmr_exit0; } atomic_dec(&ib_pd->usecnt); ehca_dereg_internal_maxmr_exit0: if (ret) ehca_err(&shca->ib_device, "ret=%x shca=%p shca->maxmr=%p", ret, shca, shca->maxmr); return ret; } /* end ehca_dereg_internal_maxmr() */ /*----------------------------------------------------------------------*/ /* * check physical buffer array of MR verbs for validness and * calculates MR size */ int ehca_mr_chk_buf_and_calc_size(struct ib_phys_buf *phys_buf_array, int num_phys_buf, u64 *iova_start, u64 *size) { struct ib_phys_buf *pbuf = phys_buf_array; u64 size_count = 0; u32 i; if (num_phys_buf == 0) { ehca_gen_err("bad phys buf array len, num_phys_buf=0"); return -EINVAL; } /* check first buffer */ if (((u64)iova_start & ~PAGE_MASK) != (pbuf->addr & ~PAGE_MASK)) { ehca_gen_err("iova_start/addr mismatch, iova_start=%p " "pbuf->addr=%lx pbuf->size=%lx", iova_start, pbuf->addr, pbuf->size); return -EINVAL; } if (((pbuf->addr + pbuf->size) % PAGE_SIZE) && (num_phys_buf > 1)) { ehca_gen_err("addr/size mismatch in 1st buf, pbuf->addr=%lx " "pbuf->size=%lx", pbuf->addr, pbuf->size); return -EINVAL; } for (i = 0; i < num_phys_buf; i++) { if ((i > 0) && (pbuf->addr % PAGE_SIZE)) { ehca_gen_err("bad address, i=%x pbuf->addr=%lx " "pbuf->size=%lx", i, pbuf->addr, pbuf->size); return -EINVAL; } if (((i > 0) && /* not 1st */ (i < (num_phys_buf - 1)) && /* not last */ (pbuf->size % PAGE_SIZE)) || (pbuf->size == 0)) { ehca_gen_err("bad size, i=%x pbuf->size=%lx", i, pbuf->size); return -EINVAL; } size_count += pbuf->size; pbuf++; } *size = size_count; return 0; } /* end ehca_mr_chk_buf_and_calc_size() */ /*----------------------------------------------------------------------*/ /* check page list of map FMR verb for validness */ int ehca_fmr_check_page_list(struct ehca_mr *e_fmr, u64 *page_list, int list_len) { u32 i; u64 *page; if ((list_len == 0) || (list_len > e_fmr->fmr_max_pages)) { ehca_gen_err("bad list_len, list_len=%x " "e_fmr->fmr_max_pages=%x fmr=%p", list_len, e_fmr->fmr_max_pages, e_fmr); return -EINVAL; } /* each page must be aligned */ page = page_list; for (i = 0; i < list_len; i++) { if (*page % e_fmr->fmr_page_size) { ehca_gen_err("bad page, i=%x *page=%lx page=%p fmr=%p " "fmr_page_size=%x", i, *page, page, e_fmr, e_fmr->fmr_page_size); return -EINVAL; } page++; } return 0; } /* end ehca_fmr_check_page_list() */ /*----------------------------------------------------------------------*/ /* setup page buffer from page info */ int ehca_set_pagebuf(struct ehca_mr *e_mr, struct ehca_mr_pginfo *pginfo, u32 number, u64 *kpage) { int ret = 0; struct ib_umem_chunk *prev_chunk; struct ib_umem_chunk *chunk; struct ib_phys_buf *pbuf; u64 *fmrlist; u64 num4k, pgaddr, offs4k; u32 i = 0; u32 j = 0; if (pginfo->type == EHCA_MR_PGI_PHYS) { /* loop over desired phys_buf_array entries */ while (i < number) { pbuf = pginfo->phys_buf_array + pginfo->next_buf; num4k = ((pbuf->addr % EHCA_PAGESIZE) + pbuf->size + EHCA_PAGESIZE - 1) / EHCA_PAGESIZE; offs4k = (pbuf->addr & ~PAGE_MASK) / EHCA_PAGESIZE; while (pginfo->next_4k < offs4k + num4k) { /* sanity check */ if ((pginfo->page_cnt >= pginfo->num_pages) || (pginfo->page_4k_cnt >= pginfo->num_4k)) { ehca_gen_err("page_cnt >= num_pages, " "page_cnt=%lx " "num_pages=%lx " "page_4k_cnt=%lx " "num_4k=%lx i=%x", pginfo->page_cnt, pginfo->num_pages, pginfo->page_4k_cnt, pginfo->num_4k, i); ret = -EFAULT; goto ehca_set_pagebuf_exit0; } *kpage = phys_to_abs( (pbuf->addr & EHCA_PAGEMASK) + (pginfo->next_4k * EHCA_PAGESIZE)); if ( !(*kpage) && pbuf->addr ) { ehca_gen_err("pbuf->addr=%lx " "pbuf->size=%lx " "next_4k=%lx", pbuf->addr, pbuf->size, pginfo->next_4k); ret = -EFAULT; goto ehca_set_pagebuf_exit0; } (pginfo->page_4k_cnt)++; (pginfo->next_4k)++; if (pginfo->next_4k % (PAGE_SIZE / EHCA_PAGESIZE) == 0) (pginfo->page_cnt)++; kpage++; i++; if (i >= number) break; } if (pginfo->next_4k >= offs4k + num4k) { (pginfo->next_buf)++; pginfo->next_4k = 0; } } } else if (pginfo->type == EHCA_MR_PGI_USER) { /* loop over desired chunk entries */ chunk = pginfo->next_chunk; prev_chunk = pginfo->next_chunk; list_for_each_entry_continue(chunk, (&(pginfo->region->chunk_list)), list) { for (i = pginfo->next_nmap; i < chunk->nmap; ) { pgaddr = ( page_to_pfn(chunk->page_list[i].page) << PAGE_SHIFT ); *kpage = phys_to_abs(pgaddr + (pginfo->next_4k * EHCA_PAGESIZE)); if ( !(*kpage) ) { ehca_gen_err("pgaddr=%lx " "chunk->page_list[i]=%lx " "i=%x next_4k=%lx mr=%p", pgaddr, (u64)sg_dma_address( &chunk-> page_list[i]), i, pginfo->next_4k, e_mr); ret = -EFAULT; goto ehca_set_pagebuf_exit0; } (pginfo->page_4k_cnt)++; (pginfo->next_4k)++; kpage++; if (pginfo->next_4k % (PAGE_SIZE / EHCA_PAGESIZE) == 0) { (pginfo->page_cnt)++; (pginfo->next_nmap)++; pginfo->next_4k = 0; i++; } j++; if (j >= number) break; } if ((pginfo->next_nmap >= chunk->nmap) && (j >= number)) { pginfo->next_nmap = 0; prev_chunk = chunk; break; } else if (pginfo->next_nmap >= chunk->nmap) { pginfo->next_nmap = 0; prev_chunk = chunk; } else if (j >= number) break; else prev_chunk = chunk; } pginfo->next_chunk = list_prepare_entry(prev_chunk, (&(pginfo->region->chunk_list)), list); } else if (pginfo->type == EHCA_MR_PGI_FMR) { /* loop over desired page_list entries */ fmrlist = pginfo->page_list + pginfo->next_listelem; for (i = 0; i < number; i++) { *kpage = phys_to_abs((*fmrlist & EHCA_PAGEMASK) + pginfo->next_4k * EHCA_PAGESIZE); if ( !(*kpage) ) { ehca_gen_err("*fmrlist=%lx fmrlist=%p " "next_listelem=%lx next_4k=%lx", *fmrlist, fmrlist, pginfo->next_listelem, pginfo->next_4k); ret = -EFAULT; goto ehca_set_pagebuf_exit0; } (pginfo->page_4k_cnt)++; (pginfo->next_4k)++; kpage++; if (pginfo->next_4k % (e_mr->fmr_page_size / EHCA_PAGESIZE) == 0) { (pginfo->page_cnt)++; (pginfo->next_listelem)++; fmrlist++; pginfo->next_4k = 0; } } } else { ehca_gen_err("bad pginfo->type=%x", pginfo->type); ret = -EFAULT; goto ehca_set_pagebuf_exit0; } ehca_set_pagebuf_exit0: if (ret) ehca_gen_err("ret=%x e_mr=%p pginfo=%p type=%x num_pages=%lx " "num_4k=%lx next_buf=%lx next_4k=%lx number=%x " "kpage=%p page_cnt=%lx page_4k_cnt=%lx i=%x " "next_listelem=%lx region=%p next_chunk=%p " "next_nmap=%lx", ret, e_mr, pginfo, pginfo->type, pginfo->num_pages, pginfo->num_4k, pginfo->next_buf, pginfo->next_4k, number, kpage, pginfo->page_cnt, pginfo->page_4k_cnt, i, pginfo->next_listelem, pginfo->region, pginfo->next_chunk, pginfo->next_nmap); return ret; } /* end ehca_set_pagebuf() */ /*----------------------------------------------------------------------*/ /* setup 1 page from page info page buffer */ int ehca_set_pagebuf_1(struct ehca_mr *e_mr, struct ehca_mr_pginfo *pginfo, u64 *rpage) { int ret = 0; struct ib_phys_buf *tmp_pbuf; u64 *fmrlist; struct ib_umem_chunk *chunk; struct ib_umem_chunk *prev_chunk; u64 pgaddr, num4k, offs4k; if (pginfo->type == EHCA_MR_PGI_PHYS) { /* sanity check */ if ((pginfo->page_cnt >= pginfo->num_pages) || (pginfo->page_4k_cnt >= pginfo->num_4k)) { ehca_gen_err("page_cnt >= num_pages, page_cnt=%lx " "num_pages=%lx page_4k_cnt=%lx num_4k=%lx", pginfo->page_cnt, pginfo->num_pages, pginfo->page_4k_cnt, pginfo->num_4k); ret = -EFAULT; goto ehca_set_pagebuf_1_exit0; } tmp_pbuf = pginfo->phys_buf_array + pginfo->next_buf; num4k = ((tmp_pbuf->addr % EHCA_PAGESIZE) + tmp_pbuf->size + EHCA_PAGESIZE - 1) / EHCA_PAGESIZE; offs4k = (tmp_pbuf->addr & ~PAGE_MASK) / EHCA_PAGESIZE; *rpage = phys_to_abs((tmp_pbuf->addr & EHCA_PAGEMASK) + (pginfo->next_4k * EHCA_PAGESIZE)); if ( !(*rpage) && tmp_pbuf->addr ) { ehca_gen_err("tmp_pbuf->addr=%lx" " tmp_pbuf->size=%lx next_4k=%lx", tmp_pbuf->addr, tmp_pbuf->size, pginfo->next_4k); ret = -EFAULT; goto ehca_set_pagebuf_1_exit0; } (pginfo->page_4k_cnt)++; (pginfo->next_4k)++; if (pginfo->next_4k % (PAGE_SIZE / EHCA_PAGESIZE) == 0) (pginfo->page_cnt)++; if (pginfo->next_4k >= offs4k + num4k) { (pginfo->next_buf)++; pginfo->next_4k = 0; } } else if (pginfo->type == EHCA_MR_PGI_USER) { chunk = pginfo->next_chunk; prev_chunk = pginfo->next_chunk; list_for_each_entry_continue(chunk, (&(pginfo->region->chunk_list)), list) { pgaddr = ( page_to_pfn(chunk->page_list[ pginfo->next_nmap].page) << PAGE_SHIFT); *rpage = phys_to_abs(pgaddr + (pginfo->next_4k * EHCA_PAGESIZE)); if ( !(*rpage) ) { ehca_gen_err("pgaddr=%lx chunk->page_list[]=%lx" " next_nmap=%lx next_4k=%lx mr=%p", pgaddr, (u64)sg_dma_address( &chunk->page_list[ pginfo-> next_nmap]), pginfo->next_nmap, pginfo->next_4k, e_mr); ret = -EFAULT; goto ehca_set_pagebuf_1_exit0; } (pginfo->page_4k_cnt)++; (pginfo->next_4k)++; if (pginfo->next_4k % (PAGE_SIZE / EHCA_PAGESIZE) == 0) { (pginfo->page_cnt)++; (pginfo->next_nmap)++; pginfo->next_4k = 0; } if (pginfo->next_nmap >= chunk->nmap) { pginfo->next_nmap = 0; prev_chunk = chunk; } break; } pginfo->next_chunk = list_prepare_entry(prev_chunk, (&(pginfo->region->chunk_list)), list); } else if (pginfo->type == EHCA_MR_PGI_FMR) { fmrlist = pginfo->page_list + pginfo->next_listelem; *rpage = phys_to_abs((*fmrlist & EHCA_PAGEMASK) + pginfo->next_4k * EHCA_PAGESIZE); if ( !(*rpage) ) { ehca_gen_err("*fmrlist=%lx fmrlist=%p " "next_listelem=%lx next_4k=%lx", *fmrlist, fmrlist, pginfo->next_listelem, pginfo->next_4k); ret = -EFAULT; goto ehca_set_pagebuf_1_exit0; } (pginfo->page_4k_cnt)++; (pginfo->next_4k)++; if (pginfo->next_4k % (e_mr->fmr_page_size / EHCA_PAGESIZE) == 0) { (pginfo->page_cnt)++; (pginfo->next_listelem)++; pginfo->next_4k = 0; } } else { ehca_gen_err("bad pginfo->type=%x", pginfo->type); ret = -EFAULT; goto ehca_set_pagebuf_1_exit0; } ehca_set_pagebuf_1_exit0: if (ret) ehca_gen_err("ret=%x e_mr=%p pginfo=%p type=%x num_pages=%lx " "num_4k=%lx next_buf=%lx next_4k=%lx rpage=%p " "page_cnt=%lx page_4k_cnt=%lx next_listelem=%lx " "region=%p next_chunk=%p next_nmap=%lx", ret, e_mr, pginfo, pginfo->type, pginfo->num_pages, pginfo->num_4k, pginfo->next_buf, pginfo->next_4k, rpage, pginfo->page_cnt, pginfo->page_4k_cnt, pginfo->next_listelem, pginfo->region, pginfo->next_chunk, pginfo->next_nmap); return ret; } /* end ehca_set_pagebuf_1() */ /*----------------------------------------------------------------------*/ /* * check MR if it is a max-MR, i.e. uses whole memory * in case it's a max-MR 1 is returned, else 0 */ int ehca_mr_is_maxmr(u64 size, u64 *iova_start) { /* a MR is treated as max-MR only if it fits following: */ if ((size == ((u64)high_memory - PAGE_OFFSET)) && (iova_start == (void*)KERNELBASE)) { ehca_gen_dbg("this is a max-MR"); return 1; } else return 0; } /* end ehca_mr_is_maxmr() */ /*----------------------------------------------------------------------*/ /* map access control for MR/MW. This routine is used for MR and MW. */ void ehca_mrmw_map_acl(int ib_acl, u32 *hipz_acl) { *hipz_acl = 0; if (ib_acl & IB_ACCESS_REMOTE_READ) *hipz_acl |= HIPZ_ACCESSCTRL_R_READ; if (ib_acl & IB_ACCESS_REMOTE_WRITE) *hipz_acl |= HIPZ_ACCESSCTRL_R_WRITE; if (ib_acl & IB_ACCESS_REMOTE_ATOMIC) *hipz_acl |= HIPZ_ACCESSCTRL_R_ATOMIC; if (ib_acl & IB_ACCESS_LOCAL_WRITE) *hipz_acl |= HIPZ_ACCESSCTRL_L_WRITE; if (ib_acl & IB_ACCESS_MW_BIND) *hipz_acl |= HIPZ_ACCESSCTRL_MW_BIND; } /* end ehca_mrmw_map_acl() */ /*----------------------------------------------------------------------*/ /* sets page size in hipz access control for MR/MW. */ void ehca_mrmw_set_pgsize_hipz_acl(u32 *hipz_acl) /*INOUT*/ { return; /* HCA supports only 4k */ } /* end ehca_mrmw_set_pgsize_hipz_acl() */ /*----------------------------------------------------------------------*/ /* * reverse map access control for MR/MW. * This routine is used for MR and MW. */ void ehca_mrmw_reverse_map_acl(const u32 *hipz_acl, int *ib_acl) /*OUT*/ { *ib_acl = 0; if (*hipz_acl & HIPZ_ACCESSCTRL_R_READ) *ib_acl |= IB_ACCESS_REMOTE_READ; if (*hipz_acl & HIPZ_ACCESSCTRL_R_WRITE) *ib_acl |= IB_ACCESS_REMOTE_WRITE; if (*hipz_acl & HIPZ_ACCESSCTRL_R_ATOMIC) *ib_acl |= IB_ACCESS_REMOTE_ATOMIC; if (*hipz_acl & HIPZ_ACCESSCTRL_L_WRITE) *ib_acl |= IB_ACCESS_LOCAL_WRITE; if (*hipz_acl & HIPZ_ACCESSCTRL_MW_BIND) *ib_acl |= IB_ACCESS_MW_BIND; } /* end ehca_mrmw_reverse_map_acl() */ /*----------------------------------------------------------------------*/ /* * map HIPZ rc to IB retcodes for MR/MW allocations * Used for hipz_mr_reg_alloc and hipz_mw_alloc. */ int ehca_mrmw_map_hrc_alloc(const u64 hipz_rc) { switch (hipz_rc) { case H_SUCCESS: /* successful completion */ return 0; case H_ADAPTER_PARM: /* invalid adapter handle */ case H_RT_PARM: /* invalid resource type */ case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */ case H_MLENGTH_PARM: /* invalid memory length */ case H_MEM_ACCESS_PARM: /* invalid access controls */ case H_CONSTRAINED: /* resource constraint */ return -EINVAL; case H_BUSY: /* long busy */ return -EBUSY; default: return -EINVAL; } } /* end ehca_mrmw_map_hrc_alloc() */ /*----------------------------------------------------------------------*/ /* * map HIPZ rc to IB retcodes for MR register rpage * Used for hipz_h_register_rpage_mr at registering last page */ int ehca_mrmw_map_hrc_rrpg_last(const u64 hipz_rc) { switch (hipz_rc) { case H_SUCCESS: /* registration complete */ return 0; case H_PAGE_REGISTERED: /* page registered */ case H_ADAPTER_PARM: /* invalid adapter handle */ case H_RH_PARM: /* invalid resource handle */ /* case H_QT_PARM: invalid queue type */ case H_PARAMETER: /* * invalid logical address, * or count zero or greater 512 */ case H_TABLE_FULL: /* page table full */ case H_HARDWARE: /* HCA not operational */ return -EINVAL; case H_BUSY: /* long busy */ return -EBUSY; default: return -EINVAL; } } /* end ehca_mrmw_map_hrc_rrpg_last() */ /*----------------------------------------------------------------------*/ /* * map HIPZ rc to IB retcodes for MR register rpage * Used for hipz_h_register_rpage_mr at registering one page, but not last page */ int ehca_mrmw_map_hrc_rrpg_notlast(const u64 hipz_rc) { switch (hipz_rc) { case H_PAGE_REGISTERED: /* page registered */ return 0; case H_SUCCESS: /* registration complete */ case H_ADAPTER_PARM: /* invalid adapter handle */ case H_RH_PARM: /* invalid resource handle */ /* case H_QT_PARM: invalid queue type */ case H_PARAMETER: /* * invalid logical address, * or count zero or greater 512 */ case H_TABLE_FULL: /* page table full */ case H_HARDWARE: /* HCA not operational */ return -EINVAL; case H_BUSY: /* long busy */ return -EBUSY; default: return -EINVAL; } } /* end ehca_mrmw_map_hrc_rrpg_notlast() */ /*----------------------------------------------------------------------*/ /* map HIPZ rc to IB retcodes for MR query. Used for hipz_mr_query. */ int ehca_mrmw_map_hrc_query_mr(const u64 hipz_rc) { switch (hipz_rc) { case H_SUCCESS: /* successful completion */ return 0; case H_ADAPTER_PARM: /* invalid adapter handle */ case H_RH_PARM: /* invalid resource handle */ return -EINVAL; case H_BUSY: /* long busy */ return -EBUSY; default: return -EINVAL; } } /* end ehca_mrmw_map_hrc_query_mr() */ /*----------------------------------------------------------------------*/ /*----------------------------------------------------------------------*/ /* * map HIPZ rc to IB retcodes for freeing MR resource * Used for hipz_h_free_resource_mr */ int ehca_mrmw_map_hrc_free_mr(const u64 hipz_rc) { switch (hipz_rc) { case H_SUCCESS: /* resource freed */ return 0; case H_ADAPTER_PARM: /* invalid adapter handle */ case H_RH_PARM: /* invalid resource handle */ case H_R_STATE: /* invalid resource state */ case H_HARDWARE: /* HCA not operational */ return -EINVAL; case H_RESOURCE: /* Resource in use */ case H_BUSY: /* long busy */ return -EBUSY; default: return -EINVAL; } } /* end ehca_mrmw_map_hrc_free_mr() */ /*----------------------------------------------------------------------*/ /* * map HIPZ rc to IB retcodes for freeing MW resource * Used for hipz_h_free_resource_mw */ int ehca_mrmw_map_hrc_free_mw(const u64 hipz_rc) { switch (hipz_rc) { case H_SUCCESS: /* resource freed */ return 0; case H_ADAPTER_PARM: /* invalid adapter handle */ case H_RH_PARM: /* invalid resource handle */ case H_R_STATE: /* invalid resource state */ case H_HARDWARE: /* HCA not operational */ return -EINVAL; case H_RESOURCE: /* Resource in use */ case H_BUSY: /* long busy */ return -EBUSY; default: return -EINVAL; } } /* end ehca_mrmw_map_hrc_free_mw() */ /*----------------------------------------------------------------------*/ /* * map HIPZ rc to IB retcodes for SMR registrations * Used for hipz_h_register_smr. */ int ehca_mrmw_map_hrc_reg_smr(const u64 hipz_rc) { switch (hipz_rc) { case H_SUCCESS: /* successful completion */ return 0; case H_ADAPTER_PARM: /* invalid adapter handle */ case H_RH_PARM: /* invalid resource handle */ case H_MEM_PARM: /* invalid MR virtual address */ case H_MEM_ACCESS_PARM: /* invalid access controls */ case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */ return -EINVAL; case H_BUSY: /* long busy */ return -EBUSY; default: return -EINVAL; } } /* end ehca_mrmw_map_hrc_reg_smr() */ /*----------------------------------------------------------------------*/ /* * MR destructor and constructor * used in Reregister MR verb, sets all fields in ehca_mr_t to 0, * except struct ib_mr and spinlock */ void ehca_mr_deletenew(struct ehca_mr *mr) { mr->flags = 0; mr->num_pages = 0; mr->num_4k = 0; mr->acl = 0; mr->start = NULL; mr->fmr_page_size = 0; mr->fmr_max_pages = 0; mr->fmr_max_maps = 0; mr->fmr_map_cnt = 0; memset(&mr->ipz_mr_handle, 0, sizeof(mr->ipz_mr_handle)); memset(&mr->galpas, 0, sizeof(mr->galpas)); mr->nr_of_pages = 0; mr->pagearray = NULL; } /* end ehca_mr_deletenew() */ int ehca_init_mrmw_cache(void) { mr_cache = kmem_cache_create("ehca_cache_mr", sizeof(struct ehca_mr), 0, SLAB_HWCACHE_ALIGN, NULL, NULL); if (!mr_cache) return -ENOMEM; mw_cache = kmem_cache_create("ehca_cache_mw", sizeof(struct ehca_mw), 0, SLAB_HWCACHE_ALIGN, NULL, NULL); if (!mw_cache) { kmem_cache_destroy(mr_cache); mr_cache = NULL; return -ENOMEM; } return 0; } void ehca_cleanup_mrmw_cache(void) { if (mr_cache) kmem_cache_destroy(mr_cache); if (mw_cache) kmem_cache_destroy(mw_cache); }